CN106678098B - Crane hydraulic control system and crane - Google Patents

Crane hydraulic control system and crane Download PDF

Info

Publication number
CN106678098B
CN106678098B CN201611257503.2A CN201611257503A CN106678098B CN 106678098 B CN106678098 B CN 106678098B CN 201611257503 A CN201611257503 A CN 201611257503A CN 106678098 B CN106678098 B CN 106678098B
Authority
CN
China
Prior art keywords
valve
energy
valve port
control
luffing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201611257503.2A
Other languages
Chinese (zh)
Other versions
CN106678098A (en
Inventor
单增海
东权
刘东宏
向小强
张正得
邓永建
王帅
胡小冬
杜孝杰
仲维超
韩建营
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuzhou Heavy Machinery Co Ltd
Original Assignee
Xuzhou Heavy Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xuzhou Heavy Machinery Co Ltd filed Critical Xuzhou Heavy Machinery Co Ltd
Priority to CN201611257503.2A priority Critical patent/CN106678098B/en
Publication of CN106678098A publication Critical patent/CN106678098A/en
Application granted granted Critical
Publication of CN106678098B publication Critical patent/CN106678098B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/20—Control systems or devices for non-electric drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control And Safety Of Cranes (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The present invention relates to crane technical field, more particularly to a kind of crane hydraulic control system and crane.The crane hydraulic control system of the present invention, it includes prime mover, executes control mechanism, hydraulic brake system, travels energy recycle device and operation energy recycle device, and pass through the cooperation of operation energy recycle device and enforcement energy recycle device and energy transition device, hydraulic energy can be separately converted to the kinetic energy in crane running braking process and the potential energy in falling process of heavy to carry out recycling storage and utilized again, therefore, the present invention may be implemented, to the recycling of crane energy and energy of getting off, to effectively reduce energy waste.

Description

Crane hydraulic control system and crane
Technical field
The present invention relates to crane technical field, more particularly to a kind of crane hydraulic control system and crane.
Background technology
Existing crane, during getting off travelling brake and in execution weight-drop operation process of getting on the bus, There are energy dissipation phenomenon, the gravitional force in kinetic energy and falling process of heavy in braking process is generally converted to thermal energy and dissipates It loses, this can increase oil consumption and the discharge of pernicious gas, influence the service life of brake apparatus, prime mover and hydraulic system.
Invention content
A technical problem to be solved by this invention is：To under the kinetic energy and weight in crane running braking process Potential energy during falling is recycled, and energy waste is reduced.
In order to solve the above technical problem, the present invention provides a kind of crane hydraulic control systems comprising can drive Prime mover of dynamic crane running, the execution control mechanism and prime mover for implementing operation for controlling the executing agency of crane Energy transition device, enforcement energy recycle device be connected by power state and operation energy recycle device, wherein：
Energy transition device includes the pump motor that can switchably work in pump condition and motor operating conditions, pump motor With can the first working hole for connecting of break-make and can the second working hole for connecting of break-make with control mechanism is executed with fuel tank；Exercise energy It includes the first accumulator that can be connect to break-make with the first working hole to measure retracting device, and operation energy recycle device includes and second Working hole can connect to break-make the second accumulator；
Operation energy recycle device coordinates with energy transition device, can executing agency be executed weight-drop operation Gravitional force in the process is converted into hydraulic energy and is stored in the first accumulator, realizes operation energy recovery function, at this point, pump horse Up in motor operating conditions, the first working hole is connected to the first accumulator and is disconnected by the oil circuit of the first working hole to fuel tank, second Working hole is connected to execution control mechanism and is disconnected with the second accumulator；
Energy recycle device is travelled with energy transition device to coordinate, it can be by the machine in crane running braking process Tool can be converted into hydraulic energy and be stored in realization traveling energy recovery function in the second accumulator, at this point, pump motor is in pump condition, First working hole is connected to fuel tank, and the second working hole is connected to the second accumulator and is disconnected with control mechanism is executed.
Optionally, energy transition device can also be supplied when executing agency normally executes operation to execute control mechanism To hydraulic oil, at this point, pump motor is in pump condition, the first working hole is connected to fuel tank, the second working hole and execution control mechanism It is connected to and is disconnected with the second accumulator.
Optionally, crane hydraulic control system further includes the first break-make for controlling the first working hole and fuel tank break-make Control device and for control the second working hole with execute control mechanism break-make the second on-off control device, operation energy regenerating Device further includes the third on-off control device for controlling the first accumulator and the first working hole break-make, traveling energy regenerating dress It further includes the 4th on-off control device for controlling the second accumulator and the second working hole break-make to set, wherein：
When realizing operation energy recovery function, the first on-off control device controls the oil circuit by the first working hole to fuel tank It disconnects, the second on-off control device controls the second working hole and is connected to control mechanism is executed, and third on-off control device controls the One working hole is connected to the first accumulator, and the 4th on-off control device controls the second working hole and the second accumulator disconnects；
Realizing that the first on-off control device controls the first working hole and is connected to fuel tank when travelling energy recovery function, the Two on-off control devices control the second working hole and are disconnected with control mechanism is executed, and the second work of the 4th on-off control device control Mouth is connected to the second accumulator.
Optionally, the first on-off control device includes hydraulic control one-way valve, and the oil inlet of hydraulic control one-way valve is connected to fuel tank, liquid The oil outlet of control check valve is connected to the first working hole；And/or second on-off control device include getting on or off the bus switching valve, up and down Vehicle switching valve includes the first valve port and the second valve port, and the first valve port of switching valve of getting on or off the bus is connected to the second working hole, gets on or off the bus Second valve port of switching valve is connected to control mechanism is executed, and switching valve of getting on or off the bus is with the first working condition and the second work shape State, when switching valve of getting on or off the bus is in the first working condition, the first valve port of switching valve of getting on or off the bus and the second valve port disconnect, when upper When switching valve of getting off is in the second working condition, the first valve port of switching valve of getting on or off the bus is connected to the second valve port；And/or third On-off control device includes the first accumulation of energy control valve, and the first accumulation of energy control valve includes the first valve port and the second valve port, the first accumulation of energy First valve port of control valve is connected to the first working hole, and the second valve port of the first accumulation of energy control valve is connected to the first accumulator, and First accumulation of energy control valve has the first working condition and the second working condition, when the first accumulation of energy control valve is in the first working condition When, the first valve port of the first accumulation of energy control valve and the second valve port disconnect, alternatively, the first valve port and second of the first accumulation of energy control valve Valve port is along the direction unilaterally connected by the first working hole to the first accumulator, when the first accumulation of energy control valve is in the second work shape When state, the first valve port of the first accumulation of energy control valve is connected to the second valve port；And/or the 4th on-off control device include second store Energy control valve, the second accumulation of energy control valve include the first valve port and the second valve port, the first valve port and second of the second accumulation of energy control valve Working hole is connected to, and the second valve port of the second accumulation of energy control valve is connected to the second accumulator, and the second accumulation of energy control valve has first Working condition and the second working condition, when the second accumulation of energy control valve is in the first working condition, the of the second accumulation of energy control valve One valve port and the second valve port disconnect, when the second accumulation of energy control valve is in the second working condition, the first of the second accumulation of energy control valve Valve port is connected to the second valve port.
Optionally, it includes that the elevator of executing agency executes winding lifting and elevator falls and makees for controlling to execute control mechanism The winch control mechanism of industry, winch control mechanism include having Sheng Kou and falling the hoist motor of mouth, and the second of switching valve of getting on or off the bus Valve port is connect with mouth is risen, and when winch control mechanism control elevator executes elevator weight-drop operation, switching valve of getting on or off the bus Second valve port can be connected to a liter mouth, to realize elevator whereabouts operation energy recovery function；And/or it executes control mechanism and includes The luffing control mechanism of luffing raising and the operation of luffing whereabouts is executed for controlling executing agency, luffing control mechanism includes luffing Oil cylinder, the second valve port of switching valve of getting on or off the bus and the rodless cavity of amplitude oil cylinder connect, and when luffing control mechanism controls execution machine When structure executes luffing whereabouts operation, the second valve port of switching valve of getting on or off the bus can be connected to the rodless cavity of amplitude oil cylinder, to realize Luffing whereabouts operation energy recovery function.
Optionally, it includes winch control mechanism and luffing control mechanism to execute control mechanism, and operation energy recycle device is also Including being set to the second valve port of switching valve of getting on or off the bus and executing the energy regenerating switching device between control mechanism, energy regenerating Switching device be used to control the second valve port of switching valve of getting on or off the bus switchably with one in liter mouth and the rodless cavity of amplitude oil cylinder A connection realizes elevator whereabouts operation energy recovery function and luffing whereabouts operation energy recovery function with switching.
Optionally, energy regenerating switching device includes energy regenerating switching valve, energy regenerating switching valve include the first valve port, Second valve port and third valve port, the first valve port of energy regenerating switching valve are connected to the second valve port of switching valve of getting on or off the bus, energy The second valve port for recycling switching valve is connected to mouth is risen, and the third valve port of energy regenerating switching valve and the rodless cavity of amplitude oil cylinder connect It is logical, and energy regenerating switching valve has the first working condition and the second working condition, when energy regenerating switching valve is in the first work When making state, the first valve port of energy regenerating switching valve is connected to the second valve port and third valve port ends, when energy regenerating switches When valve is in the second working condition, the first valve port of energy regenerating switching valve is connected to third valve port and the second valve port ends.
Optionally, energy regenerating switching valve further includes the 4th valve port, the 4th valve port of energy regenerating switching valve and executes control Mechanism connection processed, when energy regenerating switching valve is in the first working condition and the second working condition, energy regenerating switching valve 4th valve port is turned off, and energy regenerating switching valve also has third working condition, when energy regenerating switching valve is in third work When making state, the 4th valve port of energy regenerating switching valve is connected to the first valve port and the second valve port and third valve port are turned off, with Make energy transition device that can also execute control mechanism fuel feeding when executing agency normally executes operation.
Optionally, winch control mechanism further includes hoist motor control device, and hoist motor control device rises for controlling Mouthful and fall an oil inlet in mouth and another is fuel-displaced, the 4th valve port of energy regenerating switching valve passes through hoist motor control device It is connect with hoist motor；And/or luffing control mechanism further includes amplitude oil cylinder control device, amplitude oil cylinder control device is used for Control an oil inlet in the rod chamber and rodless cavity of amplitude oil cylinder and another fuel-displaced, the 4th valve port of energy regenerating switching valve It is connect with amplitude oil cylinder by amplitude oil cylinder control device.
Optionally, hoist motor control device includes hoisting control valve, hoisting control valve include the first valve port, Second valve port, third valve port and the 4th valve port, the first valve port of hoisting control valve and the 4th valve of energy regenerating switching valve Mouth connection, the second valve port of hoisting control valve are connected to fuel tank, and the third valve port and liter mouth of hoisting control valve can lead to Connect disconnectedly, the 4th valve port of hoisting control valve with fall mouth and be connected to, hoisting control valve have the first working condition and Second working condition, when hoisting control valve is in the first working condition, the first valve port of hoisting control valve and Three valve ports are connected to and the second valve port is connected to the 4th valve port, when hoisting control valve is in the second working condition, elevator liter First valve port of drop control valve is connected to the 4th valve port and the second valve port is connected to third valve port；And/or amplitude oil cylinder control dress It sets including luffing lift controil valve, luffing lift controil valve includes the first valve port, the second valve port, third valve port and the 4th valve port, First valve port of luffing lift controil valve is connected to the 4th valve port of energy regenerating switching valve, the second valve of luffing lift controil valve Mouth is connected to fuel tank, and the third valve port of luffing lift controil valve and the rodless cavity of amplitude oil cylinder can connect to break-make, luffing lifting 4th valve port of control valve is connected to the rod chamber of amplitude oil cylinder, and luffing lift controil valve has the first working condition and the second work Make state, when luffing lift controil valve is in the first working condition, the first valve port and the third valve port of luffing lift controil valve It is connected to and the second valve port is connected to the 4th valve port, when luffing lift controil valve is in the second working condition, luffing elevating control First valve port of valve is connected to the 4th valve port and the second valve port is connected to third valve port.
Optionally, luffing controller for motor further includes luffing balanced valve, and luffing balanced valve includes the first valve port and second Valve port, the first valve port of luffing balanced valve are connected to the third valve port of luffing lift controil valve, the second valve port of luffing balanced valve The rodless cavity of amplitude oil cylinder is connected to, and luffing balanced valve has the first working condition and the second working condition, when luffing balanced valve When in the first working condition, the first valve port and the second valve port of luffing balanced valve are along the third valve by luffing lift controil valve Mouthful to amplitude oil cylinder rodless cavity direction unilaterally connected, when luffing balanced valve is in the second working condition, luffing balanced valve The first valve port be connected to the second valve port；The third valve port of energy regenerating switching valve is connected to the first valve port of luffing balanced valve.
Optionally, the first valve port of hoisting control valve is also connect with upper car owner's fueller of crane, so that on Car owner's fueller also can be winch control mechanism fuel feeding；And/or the first valve port of luffing lift controil valve also with upper car owner Fueller connects, so that upper car owner's fueller also can be luffing control mechanism fuel feeding.
Optionally, the first valve port of hoisting control valve and the 4th valve port of energy regenerating switching valve are returned along by energy The 4th valve port of switching valve is received to the direction unilaterally connected of the first valve port of hoisting control valve, and hoisting control valve Direction between first valve port and main fueller along the first valve port by main fueller to hoisting control valve is unidirectional Connection；And/or the first valve port of luffing lift controil valve and the 4th valve port of energy regenerating switching valve are cut along by energy regenerating The 4th valve port of valve is changed to the direction unilaterally connected of the first valve port of luffing lift controil valve, and the first of luffing lift controil valve Along the direction unilaterally connected of the first valve port by main fueller to luffing lift controil valve between valve port and main fueller.
Optionally, crane hydraulic control system further includes power transmission controller, and power transmission controller is used for Switch between be connected by power state and power off state between control prime mover and energy transition device, wherein During realizing traveling energy recovery function and during realizing operation energy recovery function, power transmits control dress It sets and is in be connected by power state between control energy transition device and prime mover.
Optionally, during executing agency normally executes operation, power transmission controller also controls hydraulic energy Be connected by power state is between conversion equipment and prime mover.
Optionally, energy transition device further includes auxiliary pump, and the oil inlet of auxiliary pump is connected to fuel tank, auxiliary pump Oil outlet is connected to the first working hole.
Optionally, the oil outlet of auxiliary pump is also connect with the second working hole, and when pump motor is in motor operating conditions, auxiliary The oil outlet of pump can with the second working hole along the direction unilaterally connected of the oil outlet by auxiliary pump to the second working hole so that Auxiliary pump can be pump motor repairing when pump motor is in motor operating conditions.
Optionally, device for hydraulically actuating further includes being connected to overflow valve between the oil outlet of auxiliary pump and the second working hole, The oil inlet of overflow valve is connected to the second working hole, and the oil outlet of overflow valve is connected to the oil outlet of auxiliary pump.
Optionally, operation energy recycle device further includes the first energy-storage pressure detection device, the first energy-storage pressure detection dress Set the pressure for detecting the first accumulator；And/or traveling energy recycle device further includes the second energy-storage pressure detection device, Second energy-storage pressure detection device is used to detect the pressure of the second accumulator；And/or operation energy recycle device further includes getting on the bus Pressure-detecting device, pressure-detecting device of getting on the bus are used to detect the pressure for executing control mechanism.
Another aspect of the present invention additionally provides a kind of crane comprising the crane hydraulic pressure of executing agency and the present invention Control system.
The present invention crane hydraulic control system, by its operation energy recycle device and exercise energy recycle device with The cooperation of energy transition device, can be by the kinetic energy in crane running braking process and the potential energy in falling process of heavy It is separately recovered and is stored in the first accumulator and the second accumulator and is utilized again, therefore, the present invention may be implemented to rising Heavy-duty machine is got on the bus energy and the recycling of energy of getting off, and energy waste is effectively reduced.
By the way that exemplary embodiment of the present invention is described in detail referring to the drawings, other feature of the invention and Its advantage will become apparent.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art With obtain other attached drawings according to these attached drawings.
Fig. 1 shows the hydraulic schematic diagram of the crane hydraulic control system of one embodiment of the invention.
In figure：
1, prime mover；
211, hoist motor；212, hoisting control valve；213, elevator balance control mechanism；2131, elevator balanced valve； 2132, elevator balanced valve control valve；221, amplitude oil cylinder；222, luffing lift controil valve；223, luffing balance control mechanism； 2231, luffing balanced valve；Luffing balanced valve control valve；23, the first check valve；24, the second check valve；25, return filter；
3, energy transition device；31, pump motor；311, variable control mechanism；32, auxiliary pump；33, fluid-control one-way Valve；331, check valve control valve；34, repairing overflow valve；341, repairing check valve；342, overflow valve；
4, it gets on or off the bus switching valve；
51, the first accumulator；52, the first energy-storage pressure detection device；53, the first accumulation of energy control valve；54, energy regenerating is cut Change valve；55, it gets on the bus pressure-detecting device；56, third check valve；
61, the second accumulator；62, the second energy-storage pressure detection device；63, the second accumulation of energy control valve；
7, fuel tank；
81, clutch；82, clutch controller；
9, controller.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are in no development creative work premise Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical, Vertically, the orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that Signified device or element must have a particular orientation or with specific azimuth configuration and operations with hint, therefore cannot manage Solution is limiting the scope of the invention；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
In the description of the present invention, it is to be understood that, parts are limited using the words such as " first ", " second ", only It is merely for convenience of distinguishing corresponding parts, there is no Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore not It can be interpreted as limiting the scope of the invention.
Fig. 1 shows one embodiment of crane hydraulic control system of the present invention.Referring to Fig.1, provided by the present invention Crane hydraulic control system, including prime mover 1 of crane running, executing agency's reality for controlling crane can be driven It applies the energy transition device 3 for executing control mechanism, there is be connected by power state with prime mover 1 of industry, exercise energy time Receiving apparatus and operation energy recycle device, wherein：
Energy transition device 3 includes the pump motor 31 that can switchably work in pump condition and motor operating conditions, pump Motor 31 has can the first working hole A for connect of break-make and can second working of connecting of break-make with control mechanism is executed with fuel tank 7 Mouth B；It includes the first accumulator 51 that can be connect to break-make with the first working hole A, operation energy regenerating to exercise energy recycle device Device includes that can connect to break-make the second accumulator 61 with the second working hole B；
Operation energy recycle device coordinates with energy transition device 3, can executing agency be executed weight-drop and made Gravitional force during industry is converted into hydraulic energy and is stored in the first accumulator 51, realizes operation energy recovery function, at this point, Pump motor 31 is in motor operating conditions, and the first working hole A is connected to the first accumulator 51 and by the oil of the first working hole A to fuel tank 7 Road disconnects, and the second working hole B is connected to execution control mechanism and is disconnected with the second accumulator 61；
Energy recycle device and energy transition device 3 is travelled to coordinate, it can will be in crane running braking process Mechanical energy is converted into hydraulic energy and is stored in realization traveling energy recovery function in the second accumulator 61, at this point, pump motor 31 is in Pump condition, the first working hole A are connected to fuel tank 7, and the second working hole B is connected to the second accumulator 61 and breaks with control mechanism is executed It opens.
The present invention crane hydraulic control system, by its operation energy recycle device and exercise energy recycle device with Crane running can be braked kinetic energy and falling process of heavy during (brake) by the cooperation of energy transition device 3 In potential energy be separately recovered and be stored in the first accumulator 51 and the second accumulator 61 in order to be used again, therefore, this Invention may be implemented, to the recycling of crane energy and energy of getting off, to effectively reduce energy waste.
In order to realize it is above-mentioned respectively can break-make connection, in the present invention, crane hydraulic control system can further include the first break-make Control device and the second on-off control device, operation energy recycle device can further include third on-off control device, and travel Energy recycle device can further include the 4th on-off control device, wherein：First on-off control device is for controlling the first work The break-make of mouth A and fuel tank 7, the second on-off control device are used to control the second working hole B and execute the break-make of control mechanism, third On-off control device is used to control the break-make of the first accumulator 51 and the first working hole A, and the 4th on-off control device is for controlling The break-make of second accumulator 52 and the second working hole B.Moreover, when realizing operation energy recovery function, the first break-make control dress It sets control to be disconnected by the oil circuit of the first working hole A to fuel tank 7, the second on-off control device controls the second working hole B and executes control Mechanism connection processed, third on-off control device control the first working hole A and are connected to the first accumulator 51, and the 4th break-make control dress It sets the second working hole B of control and the second accumulator 61 disconnects；When realizing traveling energy recovery function, the first on-off control device The first working hole A is controlled to be connected to fuel tank 7, third on-off control device controls the first working hole A and the first accumulator 51 disconnects, And the 4th on-off control device control the second working hole B be connected to the second accumulator 61.
Since the first on-off control device, the second on-off control device, third on-off control device and the 4th can be utilized On-off control device control respectively the break-make of the first working hole A and fuel tank 7, the second working hole B with execute control mechanism break-make, The break-make of the break-make and the second accumulator 52 and the second working hole B of first accumulator 51 and the first working hole A, therefore, control It is more convenient, control accuracy higher；Moreover, by the cooperation of this four on-off control devices, it can not only ensure operation energy Recycle function and traveling energy recovery function it is independent of one another, non-interference, realize it is significantly more efficient get on the bus energy recovery process and It gets off energy recovery process, operation energy recovery process and traveling energy recovery process can also be avoided to normal operation of getting on the bus The influence of journey and normal driving process of getting off ensures that crane being capable of normally travel or normal when that need not carry out energy regenerating Operation.As it can be seen that the present invention can easily and effectively ensure get off normal driving process, normal operation process of getting on the bus and operation energy The removal process progress independent and orderly with traveling energy recovery process.
Wherein, a kind of embodiment as the second on-off control device of the invention, the second on-off control device can wrap Include switching valve 4 of getting on or off the bus, switching valve of getting on or off the bus 4 include the first valve port and the second valve port, the first valve port of switching valve of getting on or off the bus 4 with Second working hole B connections, the second valve port of switching valve of getting on or off the bus 4 is connected to control mechanism is executed, and switching valve 4 of getting on or off the bus has First working condition and the second working condition, when switching valve 4 of getting on or off the bus is in the first working condition, switching valve of getting on or off the bus 4 First valve port and the second valve port disconnect, when switching valve 4 of getting on or off the bus is in the second working condition, the first of switching valve of getting on or off the bus 4 Valve port is connected to the second valve port.Switching valve 4 is got on or off the bus between the first working condition and the second working condition by control in this way Switching, you can easily control the second working hole B and execute the break-make of control mechanism.
The executing agency of crane usually can execute elevator, luffing and flexible etc. single and multiple working pattern, phase The execution control mechanism of Ying Di, crane generally include winch control mechanism, luffing control mechanism and pushing handle telescopic control mechanism etc., In：The elevator that winch control mechanism controls executing agency executes winding lifting operation and the operation of elevator whereabouts, generally includes to roll up Motor 211 and hoist motor control device are raised, for driving elevator to rotate, hoist motor control device then leads to hoist motor 211 The liters mouth H for crossing control hoist motor 211 and an oil inlet falling in mouthful D and another fuel-displaced control turn of hoist motor 211 To, and then control elevator executes winding lifting operation or the operation of elevator whereabouts, hoist motor control device generally include elevator liter Control valve 212 and elevator balanced valve 2131 drop；Luffing control mechanism controls executing agency and executes under the operation of luffing raising and luffing Operation is fallen, amplitude oil cylinder 221 and amplitude oil cylinder control device are generally included, amplitude oil cylinder 221 becomes for driving luffing range of cantilever support Width cylinder control device then by control amplitude oil cylinder 221 rod chamber and rodless cavity in an oil inlet and another it is fuel-displaced come The cylinder rod for controlling amplitude oil cylinder 211 is flexible, and then controls and realize the operation of luffing raising or the operation of luffing whereabouts, amplitude oil cylinder control Device generally includes luffing lift controil valve 222 and luffing balanced valve 2231.
In this case, crane hydraulic control system of the invention both could be provided as only falling to elevator and make Gravitional force during industry is recycled, and can realize elevator whereabouts operation energy recovery function；It may be set to be only Gravitional force in the operation process of luffing whereabouts can be recycled, can realize luffing whereabouts operation energy regenerating work( Energy.
Wherein, it gets on or off the bus and cuts to realize elevator whereabouts operation energy recovery function based on aforementioned switching valve 4 of getting on or off the bus Changing the second valve port of valve 4 can connect with the liter mouth H of the hoist motor 211 of winch control mechanism, and the of switching valve 4 of getting on or off the bus Two valve ports can be connected to when needing to realize elevator whereabouts operation energy recovery function with liter mouth H.Based on this, when rolling control machine When structure control elevator executes elevator whereabouts operation and needs to realize elevator whereabouts operation energy recovery function, from hoist motor 211 The hydraulic oil of liter mouth H outflow can work in motor operating conditions via the flow direction of switching valve 4 of getting on or off the bus in the second working condition Pump motor 31, and flowed into the first accumulator 51 for being connected to the first working hole A of pump motor 31 via pump motor 31 so that The gravitional force lost in the operation process of elevator whereabouts is converted into the hydraulic energy being stored in the first accumulator 51, realizes volume Raise whereabouts operation energy recovery function.
And in order to realize luffing whereabouts operation energy recovery function, the second valve port of aforementioned switching valve 4 of getting on or off the bus then can be with It is connect with the rodless cavity of the amplitude oil cylinder 221 of luffing control mechanism, and the second valve port of switching valve 4 of getting on or off the bus can need reality It is connected to the rodless cavity of amplitude oil cylinder 221 when existing luffing whereabouts operation energy recovery function.Based on this, luffing control mechanism controls When executing agency executes luffing whereabouts operation and needs to realize luffing whereabouts operation energy recovery function, from amplitude oil cylinder 221 The hydraulic oil of rodless cavity outflow can work in motor operating conditions via the flow direction of switching valve 4 of getting on or off the bus in the second working condition Pump motor 31, and flowed into the first accumulator 51 being connected to the first working hole A of pump motor 31 via pump motor 31 so that become The gravitional force lost in the operation process of width whereabouts is converted into the hydraulic energy being stored in the first accumulator 51, realizes luffing Whereabouts operation energy recovery function.
It is highly preferred that the crane hydraulic control system of the present invention is set as to realize that operation energy in elevator whereabouts returns Function is received, and can realize luffing whereabouts operation energy recovery function.In this case, traveling energy regenerating of the invention dress The energy regenerating switching that setting can also include to be set to the second valve port of switching valve 4 of getting on or off the bus and execute between control mechanism fills It sets, which is used to control the second valve port of switching valve 4 of getting on or off the bus switchably liter with hoist motor 211 Mouth H is connected to one in the rodless cavity of amplitude oil cylinder 221.In this way when need realize elevator whereabouts operation energy recovery function When, the second valve port that energy switching control controls switching valve 4 of getting on or off the bus can be utilized to be connected to mouth H is risen, be convenient for from a liter mouth H The hydraulic oil of outflow, which flows into the first accumulator 51, carries out recycling storage, and works as and need to realize luffing whereabouts operation energy regenerating work( When energy, then energy switching device can be utilized to control the second valve port of switching valve 4 of getting on or off the bus and connected with the rodless cavity of amplitude oil cylinder 221 It is logical, carry out recycling storage convenient for being flowed into the first accumulator 51 from the hydraulic oil that the rodless cavity of amplitude oil cylinder 221 flows out.As it can be seen that By the way that energy regenerating switching device is arranged, it can easily switch and realize that elevator whereabouts operation energy recovery function and luffing fall Operation energy recovery function realizes significantly more efficient effects of energy saving and emission reduction.
Wherein, energy regenerating switching device of the invention may include energy regenerating switching valve 54, energy regenerating switching Valve 54 includes the first valve port, the second valve port and third valve port, wherein：First valve port of energy regenerating switching valve 54 is cut with getting on or off the bus The second valve port connection of valve 4 is changed, the second valve port of energy regenerating switching valve 54 is connected to mouth H is risen, energy regenerating switching valve 54 Third valve port is connected to the rodless cavity of amplitude oil cylinder 221；Moreover, the energy regenerating switching valve 54 has the first working condition and the Two working conditions, wherein：When energy regenerating switching valve 54 is in the first working condition, the first valve of energy regenerating switching valve 54 Mouth is connected to the second valve port and third valve port ends, when energy regenerating switching valve 54 is in the second working condition, energy regenerating First valve port of switching valve 54 is connected to third valve port and the second valve port ends.
By the way that above-mentioned energy regenerating switching valve 54 is arranged so that when the energy regenerating switching valve 54 is in the first working condition And switching valve 54 of getting on or off the bus, when being in the second working condition, the second working hole B can be connected to a liter mouth H, be driven convenient for pump motor 31 The hydraulic oil flowed out from liter mouth H in dynamic elevator whereabouts operation process, which enters in the first accumulator 51, to be stored, and is realized under elevator Fall operation energy recovery function；And it is in the when energy regenerating switching valve 54 is in the second working condition and switching valve 54 of getting on or off the bus When two working conditions, the second working hole B can be connected to the rodless cavity of amplitude oil cylinder 211, be driven under luffing convenient for pump motor 31 It falls to enter in the first accumulator 51 from the hydraulic oil flowed out in the rodless cavity of amplitude oil cylinder 211 in operation process and be stored, it is real Existing luffing whereabouts operation energy recovery function.
In addition, in order to more fully utilize energy transition device 3, in the present invention, energy transition device 3 is also It is configured to (hydraulic energy can be referred to as when executing agency normally executes operation to execute control mechanism supply hydraulic oil The oil supply function of getting on the bus of conversion equipment 3, in order to describe), at this point, pump motor 31 is in pump condition, the first working hole A and fuel tank 7 connections, the second working hole B are connected to execution control mechanism and are disconnected with the second accumulator 61.Based on this, hydraulic energy of the invention Amount conversion equipment 3 is not only able to work in the case where needing energy regenerating, and can also be in the case where getting on the bus normal operation Work, as the oil sources got on the bus, for normal operation process (such as elevator, luffing and flexible) fuel feeding got on the bus, this aspect can To improve the utilization rate of energy transition device 3, energy transition device 3 is enriched in crane hydraulic control system Function；On the other hand, this, which makes the energy transition device 3 both, to be operation of getting on the bus together with the original oil sources of crane Fuel feeding effectively improves the operating efficiency of crane, and reduces the requirement to original oil sources equipment, and it is original can also to omit crane Oil sources, be individually for fuel feeding of getting on the bus, realize to the integrally-built simplification of crane, reduce cost.
In order to simplify the structure of crane hydraulic control system, and be convenient for switching control, energy transition device it is upper Vehicle oil supply function can also recycle switching valve 54 to realize based on preceding energy.And in order to realize energy transition device 3 It gets on the bus oil supply function, energy regenerating switching valve 54 of the invention can also include the 4th valve port, the energy regenerating switching valve 54 4th valve port is connected to control mechanism is executed, when energy regenerating switching valve 54 is in the first working condition and the second working condition When, the 4th valve port of energy regenerating switching valve 54 is turned off, and energy regenerating switching valve 54 also has third working condition, works as energy When amount recycling switching valve 54 is in third working condition, the 4th valve port and the energy regenerating switching valve 54 of energy regenerating switching valve 54 The connection of the first valve port and the second valve port and third valve port of energy regenerating switching valve 54 be turned off.It not only can guarantee Amount recycling switching valve 54 still is able to switching and realizes elevator whereabouts operation energy recovery function and luffing whereabouts operation energy regenerating Function, but also by controlling energy regenerating switching valve 54 energy transition device can be controlled in third working condition 3 the second working hole B is connected to control mechanism is executed, convenient for the energy transition device 3 in pump condition in executing agency To execute control mechanism fuel feeding when normal execution operation, the oil supply function of getting on the bus of energy transition device 3 is realized.
Wherein, the 4th valve port of energy regenerating switching valve 54 and the connection for executing control mechanism, can pass through energy regenerating 4th valve port of switching valve 54 realizes with the connection of hoist motor control device, for example, energy regenerating switching valve 54 the 4th valve Mouth can be connected to hoisting control valve 212, and in this case, the 4th valve port of energy regenerating switching valve 54 passes through elevator horse It is connect up to control device with hoist motor 211, so that pump motor 31 can be elevator horse by hoist motor control device Up to 211 fuel feeding；Alternatively, can also by the connection of the 4th valve port of energy regenerating switching valve 54 and amplitude oil cylinder control device come It realizes, such as the 4th valve port of energy regenerating switching valve 54 can be connected to luffing lift controil valve 222, in this case, energy 4th valve port of amount recycling switching valve 54 is connect by amplitude oil cylinder control device with amplitude oil cylinder 221, so that pump motor 31 can be 221 fuel feeding of amplitude oil cylinder by amplitude oil cylinder control device.It is highly preferred that the 4th valve of energy regenerating switching valve 54 Mouth can be connected to hoist motor control device and amplitude oil cylinder control device, so that energy transition device 3 can be Elevator operating mode and the equal fuel feeding of luffing operating mode.Certainly, the 4th valve port of energy regenerating switching valve 54 can also simultaneously and telescopic oil cylinder Control device is connected to, so that energy transition device 3 can also be flexible operating mode fuel feeding, principle is similar with luffing operating mode, So and will not be described here in detail.
The present invention is described further with reference to embodiment shown in FIG. 1.The crane liquid of the embodiment Pressure control system can either meet normal work demand of getting on or off the bus, and can realize energy recovery function, and achieved energy Amount recycling function had not only included traveling energy recovery function, but also including operation energy recovery function, moreover, operation energy therein returns It includes elevator whereabouts operation energy recovery function to receive function not only, but also including luffing whereabouts operation energy recovery function.
As shown in Figure 1, in this embodiment, crane hydraulic control system includes prime mover 1, executes control mechanism, liquid Press energy conversion device 3, the hydraulic control one-way valve 33 as the first on-off control device, as the second on-off control device up and down Vehicle switching valve 4, operation energy recycle device, traveling energy recycle device, power transmission controller and controller 9.
Wherein, prime mover 1 is used as the power source of crane hydraulic control system, such as can be engine.The embodiment Prime mover 1 can not only provide power for the normal driving process of crane, additionally it is possible to be energy recovery process and crane Normal operation process of getting on the bus power is provided, for the latter mainly by driving energy transition device 3 to realize, this point can be It is described in detail below.
Energy transition device 3 for realizing hydraulic energy and mechanical energy conversion.In this embodiment, hydraulic energy turns Changing device 3 can realize the function of three aspects, can coordinate with operation energy recycle device and realize operation energy recovery function, It can realize traveling energy recovery function with traveling energy recycle device cooperation again, additionally it is possible to be used as getting on the bus when getting on the bus normal operation Oil sources, for normal operation process fuel feeding of getting on the bus, the multi-purpose set-up mode of a this energy transition device 3 can effectively letter Change the structure and control process of crane hydraulic control system.
As shown in Figure 1, the energy transition device 3 of the embodiment is connected by power transmission controller and prime mover 1 It connects, and the energy transition device of the embodiment includes pump motor 31 and auxiliary pump 32.
Pump motor 31 is a kind of Hydraulic Elements (also known as secondary component) that can convert hydraulic energy and mechanical energy mutually, energy Switch between pump condition and motor operating conditions, wherein：When in pump condition, hydraulic energy can be converted mechanical energy into, hydraulic oil by First working hole A of pump motor 31 flows to the second working hole B；When in motor operating conditions, and can be mechanical energy by hydraulic energy transfer, Hydraulic oil flows to the first working hole A by the second working hole B of pump motor 31.No matter pump condition or motor operating conditions are worked in, it should The rotation direction all same of the pump motor 31 of embodiment, the difference is that the quadrant difference residing for its swash plate pivot angle namely the implementation The pump motor 31 of example is changed by controlling its swash plate pivot angle in different quadrants to realize that operating mode switches.
As shown in Figure 1, in this embodiment, pump motor 31 is connect by power transmission controller with prime mover 1, dynamic Power is transmitted under the control of control device, has be connected by power state and power off state between pump motor 31 and prime mover 1, In, when being in be connected by power state, prime mover 1 can be to 31 passing power of pump motor so that pump motor 31 can be in prime mover 1 Driving under rotated along certain orientation；And when in power off state, prime mover 1 then transmits without normal direction pump motor 31 dynamic Power.Moreover, as shown in Figure 1, the pump motor 31 of the embodiment has the variable control mechanism that can adjust swash plate swash angle position 311, and variable control mechanism 311 is electrically connected with controller 9, such controller 9 can control variable control mechanism 311 and change pump The swash plate swash angle position of motor 31 realizes the control to the switching of 31 operating mode of pump motor and discharge capacity etc..As it can be seen that the pump horse of the embodiment The switching of pump condition and motor operating conditions is realized by way of automatically controlled variable up to 31, it is simple in structure, it is easy to control.
First working hole A of pump motor 31 is used as inlet port when pump motor 31 is in pump condition, and at pump motor 31 It is used as press oil port when motor operating conditions.In this embodiment, the first working hole A of pump motor 31 passes through hydraulic control one-way valve 33 and oil Case 7 can break-make connection, hydraulic control one-way valve 33 controls the break-make between the first working hole A and fuel tank 7.
Specifically, as shown in Figure 1, the oil inlet of hydraulic control one-way valve 33 is connected to fuel tank 7, the oil outlet of hydraulic control one-way valve 33 It is connected to the first working hole A.Based on this, when the obstructed pressure oil in the hydraulic control end of hydraulic control one-way valve 33, hydraulic control one-way valve 33 with it is general Logical check valve is identical, and control hydraulic oil can only flow to the first working hole A by fuel tank 7 through hydraulic control one-way valve 33, and be unable to reverse flow It is dynamic, that is, realize the blocking function of motor operating conditions, this is convenient for the liquid that control pump motor 31 is exported when needs recycle and get on the bus energy Pressure oil can not be back to fuel tank 7 and can only flow into the first accumulator 51 of operation energy recycle device and store；Work as hydraulic control When the hydraulic control end of check valve 33 leads to pressure oil, 33 bidirectional open of hydraulic control one-way valve valve, at this time hydraulic oil flow through hydraulic control one-way valve 33 Flow direction depend on its oil inlet and which pressure of oil outlet is bigger, if pressure the first working hole A at is more than fuel tank 7 Pressure, then hydraulic oil can flow to fuel tank 7 through hydraulic control one-way valve 33 by the first working hole A, this is convenient for needing off-load or needs The hydraulic oil at the first working hole A is controlled when utilizing recycled braking energy again without back pressure is directly back to fuel tank 7.
More specifically, as shown in Figure 1, the hydraulic control one-way valve 33 of the embodiment, hydraulic control end connects with check valve control valve 331 It connects, which is used to control the whether logical pressure oil in hydraulic control end of hydraulic control one-way valve 33, and then controls the first work Break-make between mouth A and fuel tank 7.Certainly, check valve control valve 331 be not limited to it is shown in FIG. 1 with control terminal Y1 two Position-3-way solenoid valve structure, as long as in fact, the oily break-make of the hydraulic control end pressure of hydraulic control one-way valve 33 can be controlled, in this hair Within bright protection domain.
Second working hole B of pump motor 31 is used as press oil port when pump motor 31 is in pump condition, and at pump motor 31 It is used as inlet port when motor operating conditions.In this embodiment, the second working hole B of pump motor 31 by get on or off the bus switching valve 4 with Executing control mechanism can connect to break-make, and switching valve of getting on or off the bus 4 controls logical between the second working hole B and execution control mechanism It is disconnected.
Specifically, as shown in Figure 1, the switching valve 4 of getting on or off the bus of the embodiment is using single valve arrangement (two position two-way valve), packet The first valve port and the second valve port are included, wherein：First valve port of switching valve of getting on or off the bus 4 is connected to the second working hole B, switching of getting on or off the bus Second valve port of valve 4 is connected to control mechanism is executed.Moreover, this is got on or off the bus, switching valve 4 (is in Fig. 1 with the first valve position Left position) and the second valve position (being right position in Fig. 1), wherein：When switching valve 4 of getting on or off the bus is in the first valve position, gets on or off the bus and cut It changes valve 4 and works in the first working condition, the first valve port of switching valve of getting on or off the bus 4 and the second valve port disconnect so that the second working hole B It is disconnected with the oil circuit executed between control mechanism；When switching valve 4 of getting on or off the bus is in the second valve position, switching valve of getting on or off the bus 4 works It is connected to the second valve port in the first valve port of the second working condition, switching valve of getting on or off the bus 4 so that the second working hole B and execute control Oil communication between mechanism processed.Switched between the first valve position and the second valve position by controlling switching valve 4 of getting on or off the bus in this way, i.e., Can easily control the second working hole B with execute control mechanism break-make, and then convenient for control get on the bus and get off switch over And realize traveling energy recovery function and operation energy recovery function convenient for control switching.
More specifically, as shown in Figure 1, the switching valve 4 of getting on or off the bus of the embodiment, by being in the first valve in the first valve position Oppositely arranged two check valves realize the disconnection of its first valve port and the second valve port in the first valve position mouthful between the second valve port, However, those skilled in the art should understand that, can also use at the first valve position directly closure the first valve port and the second valve port etc. its His mode realizes the disconnection of the first valve port and the second valve port at the first valve position；In addition, switching valve 4 shown in FIG. 1 of getting on or off the bus, Its control terminal Y2 is electrically connected with controller 9, and controller 9 controls this and gets on or off the bus switching valve 4 between the first valve position and the second valve position Switching, but in fact, switching valve 4 of getting on or off the bus can also be realized using other modes such as hydraulic controls in the first valve position and the second valve position Between switching.
Auxiliary pump 32 is used to convert mechanical energy to hydraulic energy, such as can be centrifugal pump.In this embodiment, auxiliary pump 32 also have be connected by power state with prime mover 1, in order to keep the structure of energy transition device 3 simpler compact, and it is square Just control auxiliary pump 32 works asynchronously with pump motor 31, and the auxiliary pump 32 of the embodiment is connect with 31 axis of pump motor, auxiliary pump 32 are mainly used for additional mechanical supercharging, improve the working performance of energy transition device 3.
As shown in Figure 1, the auxiliary pump 32 of the embodiment, oil inlet are connected to fuel tank 7, oil outlet and the first working hole A is connected to.Based on this, when auxiliary pump 32 works, the oil pumped out from fuel tank 7 can flow to the first working hole A of pump motor 31, This can effectively prevent pump motor 31 to generate negative pressure at the first working hole A when working in pump condition, can not only reduce pump Motor 31 generates the risk for being emptied cavitation erosion, helps to extend the service life of pump motor 31 and reduce in 31 course of work of pump motor Noise, and also help make pump motor 31 in maximum pump discharge have higher working speed, improve hydraulic energy conversion The working performance of device 3.
Moreover, in this embodiment, the oil outlet of auxiliary pump 32 is also connect with the second working hole B, and at pump motor 31 When motor operating conditions, the oil outlet of auxiliary pump 32 can be with the second working hole B along the oil outlet by auxiliary pump 32 to the second work Make the direction unilaterally connected of mouth B.In this way when pump motor 31 works in motor operating conditions, due to the second working hole B of pump motor 31 Pressure be less than the first working hole A pressure, therefore, the hydraulic oil that auxiliary pump 31 is pumped out from fuel tank 7 is no longer via auxiliary pump 31 Connection oil circuit between oil outlet and the first working hole A flows to the first working hole A, but flows at the second working hole B so that auxiliary It can be 31 repairing of pump motor in motor operating conditions to help pump 32, this is it is possible to prevente effectively from when pump motor 31 works in motor operating conditions There is emptying phenomenon, contributes to the service life for further extending pump motor 31, and further improve the workability of pump motor 31 Energy.In particular, in this embodiment, the pump motor 31 in motor operating conditions can be used for travelling the row that energy recycle device is recycled It sails braking energy and discharges the process of utilizing again, therefore, auxiliary pump 32 is in this process to 31 repairing of pump motor, moreover it is possible to so that the mistake Cheng Gengjia is steadily efficient, can be further illustrated in conjunction with the course of work of crane hydraulic control system behind this partial content.And Since 32 oil outlet of auxiliary oil pump to the second working hole B is unilaterally connected, so, the hydraulic oil that auxiliary pump 32 can be made to pump out It remains to flow to the first working hole A when pump motor 31 works in pump condition, realizes the aforementioned repairing to the first working hole A.
Specifically, in order to enable auxiliary pump 32 oil outlet and the second working hole B along the oil outlet by auxiliary pump 32 To the direction unilaterally connected of the second working hole B, as shown in Figure 1, the energy transition device 3 of the embodiment further includes repairing list To valve 341, the oil inlet of the repairing check valve 341 is connected to the oil outlet of auxiliary pump 32, the oil outlet of repairing check valve 341 with Second working hole B connections.Based on this, when pump motor 31 works in the high pressure of motor operating conditions and 32 oil outlet of auxiliary pump and the When the difference of low pressure at two working hole B can be such that repairing check valve 341 opens, oil outlet and the second work of auxiliary pump 32 are controlled Mouth B is along the oil outlet by auxiliary pump 32 to the direction unilaterally connected of the second working hole B so that auxiliary pump 32 can be to the second work Make mouth B pump oils, and then realizes required repairing function；And since repairing check valve 341 reversely ends, when pump motor 31 The pressure difference for working in pump condition or 31 oil outlet of auxiliary pump and working in the second working hole B of the pump motor 31 of motor operating conditions is insufficient When, repairing check valve 341 can not be opened, then the hydraulic oil that auxiliary pump 32 pumps out can not flow through repairing check valve 341 and flow to second Working hole B, and can only the first working hole A still be flowed to via the connection oil circuit between 31 oil outlet of auxiliary pump and the first working hole A, The repairing to the first working hole A needed for realizing.
As it can be seen that the set-up mode based on the embodiment, auxiliary pump 32 can be 31 repairing of pump motor in pump condition and It can be 31 repairing of pump motor in motor operating conditions, the additional mechanical supercharging under Double-working-condition to pump motor 31 may be implemented, prevent from pumping Suck erosion occurs under pump condition and motor operating conditions for motor 31, is effectively improved the working performance of pump motor 31, and extends pump horse Up to 31 service life.
In addition, as shown in Figure 1, in this embodiment, energy transition device 3 further includes overflow valve 342, the overflow valve 342 oil inlet is connected to the second working hole B, and the oil outlet of the overflow valve 342 is connected to the oil outlet of auxiliary pump 32.Due to overflowing Stream valve 342 can be opened at the second working hole B when hypertonia, and the hydraulic oil at the second working hole B is made to flow through overflow valve 342 And to the first working hole A, (pump motor 31 is in the connection oil circuit overflow between 32 oil outlet of auxiliary pump and the first working hole A at this time Pump condition forms internal oil cycle), therefore, it is possible to realize the high pressure kicks function of the second working hole B, to working in pump work The pump motor 31 of condition forms safeguard protection.
Moreover, as shown in Figure 1, in this embodiment, repairing check valve 341 is integrated into repairing overflow valve with overflow valve 342 34 so that the oil outlet of auxiliary pump 32 is connect by the repairing overflow valve 34 with the second working hole B, and setting in this way can make this The overall structure of the crane hydraulic control system of embodiment is simpler compact, is also more convenient for controlling.
Power transmission controller for control between prime mover 1 and energy transition device 3 whether be connected by power, make It can switch between be connected by power state and power off state between prime mover 1 and energy transition device 3.By setting Power transmission controller is set, it is dynamic since prime mover 1 can be made only just to switch to when needed with energy transition device 3 Power connection status, accordingly, with respect to the feelings for being constantly in be connected by power state between prime mover 1 and energy transition device 3 Condition can more effectively reduce energy consumption, cost-effective.
Specifically, as shown in Figure 1, the power transmission controller of the embodiment includes clutch 81 and clutch control dress Set 82, clutch 81 is connected between prime mover 1 and energy transition device 3, clutch controller 82 for control from Clutch 81 switches between engagement state and off-state, can be switched between energy transition device 3 and prime mover 1 with controlling Ground is in a state in be connected by power state and power off state.Wherein, in the mistake for realizing traveling energy recovery function In journey and during realizing operation energy recovery function, clutch controller 82 controls clutch 81 and is in joint shape State controls and is in be connected by power state between energy transition device 3 and prime mover 1, enables prime mover 1 to hydraulic energy 3 passing power of conversion equipment, and then allow energy transition device 3 and operation energy recycle device and traveling energy regenerating Energy recovery function is realized in device cooperation；Moreover, during executing agency normally executes operation, clutch controller 82 Clutch 81 can also be controlled and be in engagement state, this aspect is convenient for energy transition device 3 when getting on the bus normal operation For fuel feeding of getting on the bus, on the other hand also allowing for the energy recycled in the operation process of whereabouts can be used again, service hoisting The oil absorbency of pump motor 31.
And in crane normal driving process, when prime mover 1 itself can meet driving requirements, clutch control Device 82 can control clutch 81 and be off, and control and be in power between energy transition device 3 and prime mover 1 Dissengaged positions, cut-out prime mover 1 is transmitted to the power of energy transition device 3, so that energy transition device 3 etc. will not Normal driving process is had an impact；When prime mover 1 is difficult to meet driving requirements, such as when starting or climbing, from Clutch control device 82 can also control clutch 81 and be in engagement state, convenient for the energy recycled in travelling braking process It can be used again, be converted into mechanical energy auxiliary travelling.
More specifically, as shown in Figure 1, the clutch controller 82 of the embodiment uses Hydraulic Elements, specially one Two-position three way magnetic valve with control terminal Y10 so that the embodiment realizes the control to clutch 81 by hydraulic control mode.But It will be appreciated by those skilled in the art that in other embodiments of the invention, can also use an electronically or mechanically control etc. other Mode controls clutch 81.
It executes control mechanism and is used to control executing agency's implementation operation of crane, such as implement elevator, luffing and stretch Equal operations.As shown in Figure 1, in this embodiment, it includes winch control mechanism and luffing control mechanism to execute control mechanism, In：The elevator that winch control mechanism is used to control executing agency executes winding lifting operation and the operation of elevator whereabouts comprising volume Motor 211 and hoist motor control device are raised, for driving elevator to rotate, hoist motor control device then leads to hoist motor 211 The liters mouth H for crossing control hoist motor 211 and an oil inlet falling in mouthful D and another fuel-displaced control turn of hoist motor 211 To, and then control elevator and execute winding lifting operation or the operation of elevator whereabouts；Luffing control mechanism control executing agency executes change The operation of width raising and the operation of luffing whereabouts comprising amplitude oil cylinder 221 and amplitude oil cylinder control device, amplitude oil cylinder 221 are used for Drive luffing range of cantilever support, amplitude oil cylinder control device then by control amplitude oil cylinder 221 rod chamber and rodless cavity in one into Oily and another fuel-displaced cylinder rod to control amplitude oil cylinder 211 is flexible, and then controls and realize that the operation of luffing raising or luffing are fallen Operation.
Specifically, as shown in Figure 1, the hoist motor control device of the embodiment includes hoisting control valve 212 and volume Raise balance control mechanism 213；And the amplitude oil cylinder control device of the embodiment includes luffing lift controil valve 222 and luffing balance Control mechanism 223.
Wherein, hoisting control valve 212 is for controlling the flow direction that hydraulic oil flows through hoist motor 221, to pass through control The steering of hoist motor 211 processed executes winding lifting operation or the operation of elevator whereabouts to control elevator.As shown in Figure 1, the reality Apply example hoisting control valve 212 include the first valve port, the second valve port, third valve port and the 4th valve port, the first valve port with The fueller connection of getting on the bus of crane, the second valve port are connected to fuel tank 7, and third valve port can be connect to break-make with mouth H is risen, Its 4th valve port is connected to a mouthful D is fallen；Moreover, the hoisting control valve 212 has the first working condition (upper in corresponding diagram 1 Position) and the second working condition (bottom in corresponding diagram 1), wherein：When hoisting control valve 212 is in the first working condition, First valve port of hoisting control valve 212 is connected to third valve port and the second valve port is connected to the 4th valve port, this to get on the bus The pressure oil that fueller is supplied at this time can via hoisting control valve 212 enter rise a mouth H, and from fall mouthful D again via Hoisting control valve 212 flows back to fuel tank 7, and driving hoist motor 211 (referred to as rotates forward) to first direction rotation, realizes hoisting crane Rise operation；When hoisting control valve 212 is in the second working condition, the first valve port of hoisting control valve 212 and the 4th Valve port is connected to and the second valve port is connected to third valve port, this pressure oil that fueller is supplied of to get on the bus at this time can be via Hoisting control valve 212 in the second working condition, which enters, falls a mouthful D, and from liter mouth H again via in the second working condition Hoisting control valve 212 flow back to fuel tank 7, driving hoist motor 211 is to the second direction rotation (letter opposite with first direction Claim reversion), realize elevator whereabouts operation.
Moreover, as shown in Figure 1, the hoisting control valve 212 of the embodiment also has third working condition (corresponding diagram 1 Shown in middle position), and when hoisting control valve 212 is in third working condition, the first valve of hoisting control valve 212 It mouthful is connected to the 4th valve port with the disconnection of third valve port and the second valve port, this to get on the bus pressure oil that fueller is supplied at this time It can not be formed into a loop again via hoisting control valve 212, elevator operation stops.It should be noted that hoisting control valve 212 third working condition is not limited to set-up mode shown in FIG. 1, for example, hoisting control valve 212 is set as locating Its first valve port, the second valve port, third valve port and the 4th valve port are turned off when third working condition, it is also possible that elevator is made Industry stops.
Elevator balance control mechanism 212 is set between liter mouth H and the third valve port of hoisting control valve 212, is led to It crosses the third valve port of control hoisting control valve 212 and rises the break-make between mouth H, to improve the safety of elevator operation process Property.
As shown in Figure 1, the elevator balance control mechanism 213 of the embodiment includes elevator balanced valve 2131, elevator balance Valve 2131 includes the first valve port and the second valve port, and the of the first valve port of elevator balanced valve 2131 and hoisting control valve 212 Three valve ports are connected to, and the second valve port of elevator balanced valve 2131 is connected to mouth H is risen；And the elevator balanced valve 2131 has the first work State (left position in corresponding diagram 1) and the second working condition (the right position in corresponding diagram 1), wherein：At elevator balanced valve 2131 When the first working condition, the first valve port and the second valve port of elevator balanced valve 2131 are along by hoisting control valve 212 Third valve port is to the direction unilaterally connected for rising mouth H, so that hydraulic oil flows through the elevator balanced valve 2131 in the first working condition When can only be flowed to by the third valve port of hoisting control valve 212 and rise a mouth H, and be unable to reverse flow, elevator operation can be improved When safety；And when elevator balanced valve 2131 is in the second working condition, the first valve port of elevator balanced valve 2131 and Two valve ports are connected to so that hydraulic oil can flow through the elevator balanced valve 2131 in the second working condition by liter mouth H and flow to elevator The third valve port of lift controil valve 212, is easy to implement the operation of elevator whereabouts.
More specifically, as shown in Figure 1, when elevator balanced valve 2131 is in the first working condition, elevator balanced valve 2131 The first valve port and the second valve port between it is even above-mentioned along by the of hoisting control valve 212 to realize by the way that check valve is arranged Three valve ports extremely rise the unilaterally connected in the directions mouth H；When elevator balanced valve 2131 is in the second working condition, elevator balanced valve 2131 The first valve port and the second valve port between by damp be connected to, in this way can by adjust damping size flow through elevator to adjust The flow of balanced valve 2131, and then elevator falling speed can be adjusted.
As it can be seen that being switched between the first working condition and the second working condition by controlling elevator balanced valve 2131, you can It controls the third valve port of hoisting control valve 212 and rises the break-make between mouth H.
And control elevator balanced valve 2131 for convenience and switch between the first working condition and the second working condition, such as scheme Shown in 1, the elevator balance control mechanism 213 of the embodiment further includes elevator balanced valve control valve 2132, the elevator balanced valve control Valve 2132 processed is connected to the control terminal Y9 of elevator balanced valve 2131, by controlling whether the control terminal Y9 to elevator balanced valve 2131 It is passed through pressure oil, is switched to control elevator balanced valve 2131 between the first working condition and the second working condition.
Luffing lift controil valve 222 is for controlling the flow direction that hydraulic oil flows through amplitude oil cylinder 221, to by controlling luffing The telescopic direction of oil cylinder 221 executes the operation of luffing raising or the operation of luffing whereabouts to control.As shown in Figure 1, the embodiment Luffing lift controil valve 222 includes the first valve port, the second valve port, third valve port and the 4th valve port, luffing lift controil valve 222 The fueller connection of getting on the bus of first valve port and crane, the second valve port of luffing lift controil valve 222 are connected to fuel tank 7, become The third valve port of width lift controil valve 222 can be connect to break-make with the rodless cavity of amplitude oil cylinder 221, luffing lift controil valve 222 The 4th valve port be connected to the rod chamber of amplitude oil cylinder 221；And luffing lift controil valve 222 has the first working condition (corresponding It is upper in Fig. 1) and the second working condition (bottom in corresponding diagram 1), wherein：Luffing lift controil valve 222 is in the first work When making state, the first valve port of luffing lift controil valve 222 is connected to third valve port and the second valve port is connected to the 4th valve port, this So that the pressure oil that fueller of getting on the bus is supplied can enter amplitude oil cylinder 221 via the luffing lift controil valve 222 at this time Rod chamber, and the hydraulic oil in 221 rodless cavity of amplitude oil cylinder can flow back to fuel tank 7 via the luffing lift controil valve 222 again, drive The cylinder rod of dynamic amplitude oil cylinder 221 is stretched out, and realizes luffing raising operation；When luffing lift controil valve 222 is in the second working condition, First valve port of luffing lift controil valve 222 is connected to the 4th valve port and the second valve port is connected to third valve port, this to get on the bus The pressure oil that fueller is supplied can enter the rodless cavity of amplitude oil cylinder 221 via the luffing lift controil valve 222 at this time, And the hydraulic oil in 221 rod chamber of amplitude oil cylinder can flow back to fuel tank 7 via the luffing lift controil valve 222 again, drive luffing The cylinder rod of oil cylinder 221 is retracted, and realizes luffing whereabouts operation.
Moreover, as shown in Figure 1, the luffing lift controil valve 222 of the embodiment also has third working condition (corresponding diagram 1 In middle position), when luffing lift controil valve 222 is in third working condition, the first valve port of luffing lift controil valve 222 with Third valve port disconnects and the second valve port is connected to the 4th valve port, this pressure oil that fueller is supplied that get on the bus at this time can not It is formed into a loop again via the hoisting control valve 222, luffing operation stops.Certainly, to realize that luffing operation stops, luffing liter Its first valve port, the second valve port, third valve port and the 4th valve when drop control valve 222 may be set to be in third working condition Mouth is turned off, and the set-up mode of the third working condition of luffing lift controil valve 222 shown in FIG. 1, is more convenient for realizing luffing Whereabouts operation energy recovery function, and be also convenient for during realizing luffing whereabouts operation energy recovery function by Pressure oil is passed through at second valve port of the luffing lift controil valve 222 of third working condition to come for the rod chamber of amplitude oil cylinder 221 Repairing prevents from being emptied cavitation erosion.
Luffing balance control mechanism 223 is set to the third of the rodless cavity and luffing lift controil valve 222 of amplitude oil cylinder 221 Between valve port, the break-make between 221 rodless cavity of third valve port and amplitude oil cylinder by controlling luffing lift controil valve 222, To improve safety when luffing operation.
As shown in Figure 1, the luffing balance control mechanism of the embodiment includes luffing balanced valve 2231, the luffing balanced valve 2231 include the first valve port and the second valve port, the third of the first valve port and luffing lift controil valve 222 of luffing balanced valve 2231 Valve port is connected to, the rodless cavity connection of the second valve port amplitude oil cylinder 221 of luffing balanced valve 2231；And luffing balanced valve 2231 has First working condition (left position in corresponding diagram 1) and the second working condition (the right position in corresponding diagram 1), wherein：When luffing balances When valve 2231 is in the first working condition, the first valve port and the second valve port of luffing balanced valve 2231 are along by luffing elevating control The third valve port of valve 222 to the rodless cavity of amplitude oil cylinder 221 direction unilaterally connected so that hydraulic oil flow through in first work Can only be flowed to by the third valve port of luffing lift controil valve 222 when the luffing balanced valve 2231 of state amplitude oil cylinder 221 without bar Chamber, and it is unable to reverse flow, this can improve safety when luffing operation；When luffing balanced valve 2231 is in the second work shape When state, the first valve port of luffing balanced valve 2231 is connected to the second valve port so that hydraulic oil can be by 221 rodless cavity of amplitude oil cylinder The third valve port that the luffing balanced valve 2231 in the second working condition flows to hoisting control valve 212 is flowed through, is easy to implement The operation of luffing whereabouts.
More specifically, as shown in Figure 1, when luffing balanced valve 2231 is in the first working condition, luffing balanced valve 2231 The first valve port and the second valve port between it is even above-mentioned along by the of luffing lift controil valve 222 to realize by the way that check valve is arranged Three valve ports to the rodless cavity direction of amplitude oil cylinder 221 unilaterally connected；When luffing balanced valve 2231 is in the second working condition, It is connected between the first valve port and the second valve port of luffing balanced valve 2231 by damping, it in this way can be by adjusting the size damped It adjusts the flow for flowing through luffing balanced valve 2231, and then luffing falling speed can be adjusted.
As it can be seen that being switched between the first working condition and the second working condition by controlling luffing balanced valve 2231, you can Control the break-make between 221 rodless cavity of third valve port and amplitude oil cylinder of luffing lift controil valve 222.
And control luffing balanced valve 2231 for convenience and switch between the first working condition and the second working condition, such as scheme Shown in 1, the luffing balance control mechanism 223 of the embodiment further includes luffing balanced valve control valve 2232, the luffing balanced valve control Valve 2232 processed is connected to the control terminal Y8 of luffing balanced valve 2231, by controlling whether the control terminal Y8 to luffing balanced valve 2231 It is passed through pressure oil, is switched to control luffing balanced valve 2231 between the first working condition and the second working condition.
As previously mentioned, in this embodiment, hoisting control valve 212 and luffing lift controil valve 222 are in third work When making state, respective second valve port is connected to respective 4th valve port, the advantages of this arrangement are as follows, convenient under realization When falling operation, by being passed through pressure oil to second valve port of the two, and whereabouts repairing function is realized, to prevent in dropping process Hoist motor 211 fall mouthful D and there is emptying phenomenon in the rod chamber 221 of amplitude oil cylinder 221, and then whereabouts can be further decreased The risk of stall.
In addition, it is necessary to explanation, although in order to keep structure simpler, control is more convenient, in Fig. 1, elevator liter Control valve 212 drops using four position three-way valves with control end Y61 and Y62, and luffing lift controil valve 222, which uses, has control terminal Four position three-way valves of Y71 and Y72, however, those skilled in the art should understand that, hoisting control valve 212 and luffing elevating control Valve 222 is not limited thereto, such as can also use pilot operated valve device, or can also be closed by several valve groups to realize corresponding work( Energy.
Aforementioned fueller of getting on the bus is in the device for executing operation process to execution control mechanism fuel feeding of getting on the bus.In order to It reduces and the problems such as system attonity, impact, low-response or shake occurs in mostly action complex conditions, in this embodiment, with The fueller of getting on the bus of the first valve port connection of the first valve port and luffing lift controil valve 222 of hoisting control valve 212 Also include that upper car owner's fueller (can be with wherein both include the energy transition device 3 of the embodiment using multiple pump Pumped including one or more), that is, in this embodiment, energy transition device 3 and upper car owner's fueller are both used as The oil sources of vehicle, all can be get on the bus fuel feeding, and due to being arranged independently of one another, so that the oil sources for executing control mechanism is independent, Help to improve complex conditions performance.Moreover, relative to only utilizing in energy transition device 3 and upper car owner's fueller One for get on the bus fuel feeding the case where, this setup of the embodiment can also be reduced to energy transition device 3 and upper The requirement of car owner's fueller is easy to use the energy transition device 3 and/or upper car owner's fuel feeding dress of smaller installed power It sets, this contributes to the discharge for being further reduced pernicious gas, and helps to further increase the service life of prime mover 1 etc..
Wherein, about the first valve port of the first valve port of hoisting control valve 212 and luffing lift controil valve 222 with The connection realization method of hydraulic control device 3, is described in more detail, herein only when operation energy recycle device is described below First illustrate the first valve port of hoisting control valve 212 and the first valve port of luffing lift controil valve 222 and upper car owner's fuel feeding The connection realization method of device.
In this embodiment, the first valve of the first valve port of hoisting control valve 212 and luffing lift controil valve 222 It is connected by check valve between mouth and upper car owner's fueller.Specifically, as shown in Figure 1, upper car owner's fuel feeding dress of the embodiment It sets through the first check valve 23 and the first valve port of hoisting control valve 212 and the first valve of luffing lift controil valve 222 Mouth connection, wherein the oil inlet of the first check valve 23 is connected to upper car owner's fueller, the oil outlet and volume of the first check valve 23 First valve port of the first valve port and luffing lift controil valve 222 of raising lift controil valve 212 is all connected with, so that upper car owner Fueller is both with the first valve port of hoisting control valve 212 along from upper car owner's fueller to hoisting control valve The direction unilaterally connected of 212 the first valve port is also filled with the first valve port of luffing lift controil valve 222 along by upper car owner's fuel feeding Set the direction unilaterally connected to the first valve port of luffing lift controil valve 222.The setting is advantageous in that, may further ensure that Upper car owner's fueller with as get on the bus oil sources when energy transition device 3 it is independent of one another, prevent hydraulic oil generation to be not required to The reverse flow wanted improves the job stability and reliability of the crane hydraulic control system of the embodiment.
As it can be seen that in this embodiment, by the first valve port and luffing lift controil valve that make hoisting control valve 212 222 the first valve port is connect with upper car owner's fueller so that upper car owner's fueller can be to get on the bus to carry out fuel feeding.
In addition, as shown in Figure 1, in this embodiment, the second valve port and luffing the lifting control of hoisting control valve 212 Second valve port of valve 222 processed is also connect by check valve (the second check valve 223 shown in FIG. 1) with fuel tank 7.The setting makes Along the second valve port by hoisting control valve 212 to fuel tank between the second valve port and fuel tank 7 of hoisting control valve 212 7 direction unilaterally connected, and along by luffing lift controil valve between the second valve port and fuel tank 7 of luffing lift controil valve 222 222 the second valve port to fuel tank 7 direction unilaterally connected, since fluid can be prevented in fuel tank 7 and hoisting control valve 212 And undesirable reverse flow is generated between luffing lift controil valve 222, thus, it is also possible to improve the embodiment crane hydraulic pressure The job stability and reliability of control system.Moreover, as shown in Figure 1, in this embodiment, the second check valve 24 and fuel tank 7 Between connection oil circuit on be additionally provided with return filter 25, the return filter 25 be used for flowing back to the fluid of fuel tank 7 via it It is filtered, is conducive to the purity for improving fluid in fuel tank 7, and then the work of crane hydraulic control system can be further increased Make reliability.
Operation energy recycle device, which is used to coordinate with energy transition device 3, realizes operation energy recovery function.At this In embodiment, operation energy recycle device can recycle the gravitional force in the operation process of elevator whereabouts and to becoming Gravitional force in the operation process of width whereabouts is recycled so that achieved by the crane hydraulic control system of the embodiment Operation energy recovery function had not only included elevator whereabouts operation energy recovery function, but also including luffing whereabouts operation energy regenerating work( Energy.
As shown in Figure 1, the operation energy recycle device of the embodiment includes the first accumulator 51, the first accumulation of energy control valve 53 And energy regenerating switching valve 54, wherein：First accumulator 51 leads to for storing the energy recycled in the operation process of whereabouts Cross the first accumulation of energy control valve 53 and the first working hole A can break-make connect；First accumulation of energy control valve 53 is used as third break-make control dress It sets, is connected between the first accumulator 51 and the first working hole A, for controlling the first accumulator 51 and the first working hole A Break-make；Energy regenerating switching valve 54 is used as energy regenerating switching device, is connected to the second valve port of switching valve 4 of getting on or off the bus and holds Between row control mechanism, be applied not only to control get on or off the bus switching valve 4 the second valve port switchably with liter mouth H and an amplitude oil cylinder A connection in 221 rodless cavity, elevator whereabouts operation energy recovery function and luffing whereabouts operation energy are realized with switching Function is recycled, is additionally operable between the second valve port and hoist motor control device that control switching valve 4 of getting on or off the bus and oily with luffing Break-make between cylinder control device so that the second valve port of switching valve of getting on or off the bus 4 can pass through hoist motor control device and volume It raises motor 211 to connect and can connect with amplitude oil cylinder 221 by amplitude oil cylinder control device, is convenient for energy transition device 3 during getting on the bus normal operation be 221 fuel feeding of hoist motor 211 and/or amplitude oil cylinder.
Specifically, as shown in Figure 1, the first accumulation of energy control valve 53 of the embodiment includes the first valve port and the second valve port, the First valve port of one accumulation of energy control valve 53 is connected to the first working hole A, and the second valve port of the first accumulation of energy control valve 53 and first stores It can the connection of device 51；And first accumulation of energy control valve 53 have the first working condition (left position in corresponding diagram 1) and the second working condition (the right position in corresponding diagram 1), wherein：When the first accumulation of energy control valve 53 is in the first working condition, the first accumulation of energy control valve 53 The first valve port and the second valve port between along the direction unilaterally connected by the first working hole A to the first accumulator 51；When first When accumulation of energy control valve 53 is in the second working condition, the first valve port of the first accumulation of energy control valve 53 is connected to the second valve port.
By the first accumulation of energy control valve 53 of setting, the break-make between the first accumulator 51 and the first working hole A can be controlled, And it is possible to when needing to recycle the energy of whereabouts operation process, the first accumulation of energy control valve 53 of control is in the first work Make state, the pump motor 31 convenient for working in motor operating conditions will get on the bus oil return be delivered in the first accumulator 51 carry out recycling deposit Storage, and the first valve port due to the first accumulation of energy control valve 53 and the second valve port are along by the first working hole A to the first accumulator 51 Direction unilaterally connected, therefore, after recycling, the hydraulic oil stored in the first accumulator 51 can not reversely flow out, can Realize the reliable memory to hydraulic energy；And when needing to utilize stored hydraulic energy again, then it can control the first accumulation of energy control Valve 53 processed switches to the second working condition so that the hydraulic oil being stored in the first accumulator 51 is released, and service hoisting pumps horse Up to 31 oil absorptive function.
In Fig. 1, the first valve port of the first accumulation of energy control valve 53 in the first working condition and the second valve port pass through company It is connected to check valve between the two and realizes above-mentioned unilaterally connected, but it should be recognized that in other embodiments of the invention, the First valve port of one accumulation of energy control valve 53 can also be disconnected with the second valve port in the first working condition, such as can make first The first valve port and the second valve port of accumulation of energy control valve 53 are turned off in the first working condition or can make the first accumulation of energy control First valve port of valve 53 processed is connect in the first working condition by the check valve of two reversed arrangements with the second valve port, this In the case of, the first accumulation of energy control valve 53 of control is needing to carry out operation energy regenerating and is needing to utilize recycled energy again When be in the second working condition and control the first accumulation of energy control valve 53 the first working condition is at other, also can Realize reliable and stable operation energy recovery function.In addition, the first accumulation of energy control valve 53 shown in FIG. 1 is with control terminal Y3's Two-position two-way solenoid valve so that can easily control the first accumulation of energy control valve 53 by controlling whether to be powered to control terminal Y3 It is switched between the first working condition and the second working condition, however, those skilled in the art should understand that, the first accumulation of energy control Valve 53 processed is not limited to the specific constructive form.
As shown in Figure 1, the energy regenerating switching valve 54 of the embodiment is the three-position four-way valve with control terminal Y51 and Y52, It includes the first valve port, the second valve port, third valve port and the 4th valve port, wherein：First valve port of energy regenerating switching valve 54 with Second valve port of switching valve of getting on or off the bus 4 is connected to, and the second valve port of energy regenerating switching valve 54 is connected to mouth H is risen, and energy regenerating is cut The third valve port of valve 54 and the rodless cavity of amplitude oil cylinder 221 are changed along by the second valve port to the side of the rodless cavity of amplitude oil cylinder 221 To unilaterally connected, and the 4th valve port of energy regenerating switching valve 54 then with hoist motor control device and amplitude oil cylinder control device Connection.Moreover, energy regenerating switching valve 54 (is in Fig. 1 with the first valve position (being right position in Fig. 1), the second valve position Left position) and third valve position (position in being in Fig. 1), wherein：When energy regenerating switching valve 54 is in the first valve position, energy returns It receives switching valve 54 and works in the first working condition, the first valve port is connected to the second valve port and third valve port and the 4th valve port are cut Only；When energy regenerating switching valve 54 is in the second valve position, energy regenerating switching valve 54 works in the second working condition, and first Valve port is connected to third valve port and the second valve port and the 4th valve port are turned off；When energy regenerating switching valve 54 is in third valve position When, energy regenerating switching valve 54 works in third working condition, and the first valve port is connected to the 4th valve port and the second valve port and Three valve ports are turned off.
Based on the energy regenerating switching valve 54, when needing to recycle to the gravitional force in the operation process of elevator whereabouts When, energy regenerating switching valve 54 can be controlled and switch to the first valve position, convenient for what is flowed out from liter mouth H in the operation process of elevator whereabouts Hydraulic oil can flow to the switching valve 4 of getting on or off the bus in the second working condition via the energy regenerating switching valve 54, and finally exist It works under the driving effect of the pump motor 31 under motor operating conditions, flows into the first accumulator 51, realize elevator whereabouts operation energy Amount recycling function；And when needing to recycle the gravitional force in the operation process of luffing whereabouts, then it can control energy and return It receives switching valve 54 and switches to the second valve position, convenient for the hydraulic pressure flowed out from 221 rodless cavity of amplitude oil cylinder in the operation process of luffing whereabouts Oil can flow to the switching valve 4 of getting on or off the bus in the second working condition via the energy regenerating switching valve 54, and finally work It under the driving effect of pump motor 31 under motor operating conditions, flows into the first accumulator 51, realizes that luffing whereabouts operation energy returns Receive function；Also, when normal operation of getting on the bus, without get on the bus energy regenerating when, can control at energy regenerating switching valve 54 In third valve position, the pump motor 31 convenient for working in pump condition drives hydraulic oil to be cut via in getting on or off the bus for the second working condition It changes valve 4 and the energy regenerating switching valve 54 flows to hoist motor control device and amplitude oil cylinder control device, and then realize and get on the bus Normal operation oil supply function.
In this embodiment, as shown in Figure 1, the third valve port of energy regenerating switching valve 54 and amplitude oil cylinder 221 have bar The above-mentioned unilaterally connected of chamber is realized by luffing balanced valve 2231.Specifically, the third valve port of energy regenerating switching valve 54 with First valve port of luffing balanced valve 2231 is connected to, thus when luffing balanced valve 231 is in the first working condition, it can be to enable amount The third valve port of switching valve 54 and the rodless cavity of amplitude oil cylinder 221 are recycled along by the second valve port to 221 rodless cavity of amplitude oil cylinder Direction unilaterally connected.The advantages of this arrangement are as follows not only job security higher, but also convenient for realizing that luffing falls The starting stage of energy recovery process adjusts weight-drop speed using luffing balanced valve 2231.
In addition, as shown in Figure 1, the connection of above-mentioned energy regenerating switching valve 54 the 4th valve port and hoist motor control device, It is specially the company of the 4th valve port and the first valve port of hoisting control valve 212 of energy regenerating switching valve 54 in this embodiment It connects, and the connection of above-mentioned energy regenerating switching valve 54 the 4th valve port and luffing controller for motor, it is then specific in this embodiment For the connection of the first valve port of the 4th valve port and luffing lift controil valve 222 of energy regenerating switching valve 54.Based on this, getting on the bus During normal operation, energy transition device 3 can pass through hoisting control valve 212 together with upper car owner's fueller It is for 211 fuel feeding of hoist motor and/or together 221 fuel feeding of amplitude oil cylinder by luffing lift controil valve 221.Moreover, can by Fig. 1 Know, in this embodiment, the 4th valve port of energy regenerating switching valve 54 is lifted with 212 first valve port of hoisting control valve and luffing It is additionally provided with third check valve 56 on connection oil circuit between 222 first valve port of control valve.With aforementioned setting 23 class of the first check valve As, which is set, can further ensure upper car owner's fueller with as get on the bus oil sources when hydraulic pressure Energy conversion device 3 is independent of one another.And the first check valve 23 and third check valve 56 are set simultaneously, car owner's fuel feeding can be prevented Device is flowed with the hydraulic oil provided in energy transition device 3 to another, ensures the liquid that the two is supplied Pressure oil flows as expected so that crane hydraulic control system can more reliablely and stablely work.
As it can be seen that the energy regenerating for being communicated in the second valve port of switching valve 54 of getting on or off the bus and executing between control mechanism switches Valve 54 is switched by controlling it between three valve positions, be not only convenient for switching realize elevator whereabouts operation energy recovery function with Operation energy recovery function in luffing whereabouts is also convenient for energy transition device 3 and realizes normal operation oil supply function of getting on the bus.
It is switched between three valve positions to easily control energy regenerating switching valve 54, as shown in Figure 1, the implementation There are two control terminal Y51 and Y52 for the tool of energy regenerating switching valve 54 of example, and at least one of two control terminals Y51 and Y52 can To be electrically connected with controller 9, switched between three valve positions by controller 9 to control the energy regenerating switching valve 54.
In addition, as shown in Figure 1, in this embodiment, operation energy recycle device further includes pressure-detecting device 55 of getting on the bus With the first energy-storage pressure detection device 52.
Wherein, pressure-detecting device 55 of getting on the bus is used to detect the pressure for executing control mechanism.Specifically, as shown in Figure 1, should The pressure-detecting device 55 of getting on the bus of embodiment is set to the of the second valve port of switching valve 4 of getting on or off the bus and energy regenerating switching valve 54 On connection oil circuit between one valve port, detects hold in whereabouts operation process of getting on the bus convenient for the pressure-detecting device 55 of getting on the bus in this way The pressure of row control mechanism, enabling according to the pressure for executing control mechanism to determine whether needing to carry out operation energy regenerating Function, accurately and conveniently；Moreover, the pressure-detecting device 55 of getting on the bus of the embodiment is electrically connected with controller 9, this makes this get on the bus Pressure-detecting device 55 can in time by the pressure feedback of detected execution control mechanism to controller 9, consequently facilitating Controller 9 each hydraulic valve of control crane hydraulic control system and pump motor 31 etc. when needing to carry out operation energy regenerating In required working condition.
First energy-storage pressure detection device 52 is used to detect the pressure of the first accumulator 51.Specifically, as shown in Figure 1, should First energy-storage pressure detection device 52 of embodiment is set to the connection between the first accumulator 51 and the first accumulation of energy control valve 53 On oil circuit, detected in operation energy recovery process in the first accumulator 51 convenient for the first energy-storage pressure detection device 52 in this way Pressure so that the pressure in the first accumulator 51, which reaches, controls the first working hole A after setting value and the first accumulator 51 is disconnected It opens, improves the safety of operation energy recovery process；Moreover, the first energy-storage pressure detection device 52 of the embodiment also with control Device 9 is electrically connected so that controller 9 can conveniently and accurately control each hydraulic valve and pump according to the pressure of the first accumulator 51 Motors 31 etc. are in required working condition.
Energy recycle device is travelled to be used to coordinate realization traveling energy recovery function with energy transition device 3.Such as Fig. 1 Shown, in this embodiment, traveling energy recycle device includes the second accumulator 61, the second accumulation of energy control valve 63 and second storage Energy pressure-detecting device 62, wherein：Second accumulator 61, which is used to store, travels the energy that is recycled in braking process, by the Two accumulation of energy control valves 63 and the second working hole B can break-make connect；Second accumulation of energy control valve 63 is used as the 4th on-off control device, It is connected between the second accumulator 61 and the second working hole B, the break-make for controlling the second accumulator 61 and the second working hole B； Second energy-storage pressure detection device 62 is used to detect the pressure of the second accumulator 61.
Specifically, as shown in Figure 1, the second accumulation of energy control valve 63 of the embodiment includes the first valve port and the second valve port, the First valve port of two accumulation of energy control valves 63 is connected to the second working hole B, and the second valve port of the second accumulation of energy control valve 63 and second stores It can the connection of device 61；And second accumulation of energy control valve 63 have the first working condition (left position in corresponding diagram 1) and the second working condition (the right position in corresponding diagram 1), wherein：When the second accumulation of energy control valve 63 is in the first working condition, the second accumulation of energy control valve 63 The first valve port and the second valve port disconnect；When the second accumulation of energy control valve 63 is in the second working condition, the second accumulation of energy control valve 63 the first valve port is connected to the second valve port.
By the way that the second accumulation of energy control valve 63 is arranged, can control logical between the second accumulator 61 and the second working hole B Disconnected, and it is possible to when needing the energy to travelling brake process to recycle, the second accumulation of energy control valve 63 of control switches to the Two working conditions, convenient for work in the pump motor 31 of pump condition under the driving of prime mover 1 output hydraulic pressure oil to the second accumulator Recycling storage is carried out in 61, and after recycling, can be controlled the second accumulation of energy control valve 63 and be switched to the first working condition, prevent Hydraulic oil enters back into the second accumulator 61, is also prevented from the hydraulic oil outflow stored in the second accumulator 61, and works as and need again It when utilizing stored hydraulic energy, then controls the second accumulation of energy control valve 63 and switches to the second working condition so that be stored in second Hydraulic oil in accumulator 61 can flow to the pump motor 31 for working in motor operating conditions via the second accumulation of energy control valve 63, export machine The starting of tool energy auxiliary hoist or climbing etc..
More specifically, as shown in Figure 1, in this embodiment, the second accumulation of energy control valve 63 in the first working condition First valve port and the second valve port are realized by two check valves of reversed arrangement to be disconnected, however, those skilled in the art should understand that, In fact, can also be by setting the first valve port of the second accumulation of energy control valve 63 in the first working condition with the second valve port The disconnection shape of the first valve port and the second valve port in the first working condition to realize the second accumulation of energy control valve 63 directly ended State；Moreover, the control terminal Y4 of the second accumulation of energy control valve 63 of the embodiment is electrically connected with controller 9, this enables controller 9 The second accumulation of energy control valve 63 is easily controlled to switch between the first working condition and the second working condition.
Second energy-storage pressure detection device 62 is used to detect the pressure of the second accumulator 61.Specifically, as shown in Figure 1, should Second energy-storage pressure detection device 62 of embodiment is set to the connection between the second accumulator 61 and the second accumulation of energy control valve 63 On oil circuit, it is convenient for the second energy-storage pressure detection device 62 in detecting the second accumulator 61 in travelling energy recovery process in this way Pressure, reach convenient for the pressure in the second accumulator 61 and control the second working hole B after setting value and the second accumulator 61 is disconnected It opens, improves the safety of traveling energy recovery process；Moreover, the second energy-storage pressure detection device 62 of the embodiment also with control Device 9 is electrically connected so that controller 9 can conveniently and accurately control each hydraulic valve and pump according to the pressure of the second accumulator 61 Motors 31 etc. are in required working condition.
Operation principle based on hydraulic circuit shown in FIG. 1, the embodiment crane hydraulic control system is as follows：
(1) when normally travel of getting off, clutch controller 82 controls clutch 81 and is off, at this time hydraulic energy Amount conversion equipment 3 is in power off state with prime mover 1, and energy transition device 3 does not work, and prime mover 1 drives lifting Machine normally travel.It in this process, can be according to the foot brake pedal position of crane, gearbox-gear and the second accumulation of energy pressure The pressure and other parameters of the second accumulator 61 detected by force checking device 62 judge whether that travelling brake kinetic energy can be carried out Recycling, if can be to start traveling energy recovery function.
(2) when needing to realize traveling energy recovery function, then the control terminal Y10 of clutch controller 82 is given to be powered, Control clutch 81 switches to engagement state, so that energy transition device 3 is switched to be connected by power state with prime mover 1, makes Pump motor 31 can be inputed to by obtaining the traveling inertia energy (mechanical energy) of the generations such as prime mover 1 and speed changer, this variations per hour control Mechanism 331 processed controls pump motor 31 and is in pump condition, and is powered to the control terminal Y4 of the second accumulation of energy control valve 63, and control second stores Can control valve 63 switch to the second working condition, then pump motor 31 can by fluid after pumping out and pressurizeing in fuel tank 7 through by the Two working hole B and the second accumulation of energy control valve 63 are exported into the second accumulator 61 so that the mechanical energy during travelling brake turns It turns to hydraulic energy to be stored in the second accumulator 61, realizes traveling energy recovery function.In this process, auxiliary pump 32 is also driven Start building to make, repairing carried out to the first working hole A, the pressure oil that is pumped out from fuel tank 7 via its oil outlet and the first work Make the connection oil circuit between mouth A to flow at the first working hole A, by pump horse together with the fluid that pump motor 31 pumps out from fuel tank 7 It is delivered in the second accumulator 61 after up to 31 pressurizations.
In above-mentioned traveling energy recovery process, the second detection second in real time of energy-storage pressure detection device 62 can be utilized to store Pressure in energy device 61, and after detecting that the pressure in the second accumulator 61 reaches certain threshold value, control the second accumulation of energy control Valve 63 processed switches to the first working condition so that pressure oil is no longer flow into the second accumulator 61, improves traveling energy regenerating mistake The safety of journey.
Above-mentioned recycled travelling brake energy can be subject to again when needed (such as when crane startup next time) It utilizes：Control pump motor 31 switches to motor operating conditions, and to the control terminal Y4 and check valve control valve of the second accumulation of energy control valve 63 331 control terminal Y1 break-makes, the second accumulation of energy control valve 63 of control switch to the second working condition and control hydraulically-controlled one-way valve 33 pairs To opening, clutch 81 is made to work at this time, then hydraulic oil stored in the second accumulator 61 can be controlled via the second accumulation of energy Valve 63 and pump motor 31 and hydraulic control one-way valve 33 are back to fuel tank 7, to which the hydraulic energy stored by the second accumulator 61 can be by It discharges and transmission shaft is driven to rotate, the mechanical energy exported can be started to walk or be climbed with auxiliary hoist.In this process, auxiliary pump 32 equally by driving work, and the hydraulic oil pumped out from fuel tank 7 flows to the second work via its oil outlet and repairing check valve 341 Make mouth B, realize the repairing to the second working hole B, can make that the exergonic process is more steady efficient in this way, and contribute into one Step extends the service life of pump motor 31, because at the end of exoergic, the pressure oil in the first accumulator 61 stops outflow, i.e., Make to cut off clutch 81 at this time, but pump motor 31 under the action of motional inertia still can maintenance rotation so that the second work The fluid made in the connection oil circuit between mouth B and the second energy-storage pressure control valve 63 can be back to fuel tank 7 through pump motor 31 rapidly, If being supplemented in the second working hole B without fluid at this time, it will cause the generations of pump motor 31 to be emptied cavitation erosion, influences making for pump motor 31 With service life and the stationarity of exergonic process.
(3) get on the bus normal operation when, upper car owner's fueller and energy transition device 3 are both used as oil sources of getting on the bus, to Execute control mechanism fuel feeding.Wherein, the hydraulic oil that upper car owner's fueller is supplied passes through the first check valve 23 output to execution Control mechanism.And to realize the normal operation oil supply function of getting on the bus of energy transition device 3, then in normal operation process of getting on the bus In, control clutch 81, which is in engagement state and adjusts pump motor 31, is in pump condition, and to the control terminal for switching valve 4 of getting on or off the bus Y2 is powered, and the switching valve 4 that makes to get on or off the bus switches to the second valve position, and the control terminal Y1 of check valve control valve 331 and energy return at this time The equal no power of control terminal Y51 and Y52 of switching valve 54 is received, control hydraulic control one-way valve 33 can only be opened unidirectionally and energy regenerating switches Valve 54 is in third valve position (middle position), so that energy transition device 3 can be to oil under the driving effect of prime mover 1 Liquid is pressurizeed and drives the pressure oil flowed out from the second working hole B via switching valve 4 and the energy regenerating switching valve 54 of getting on or off the bus It flows into and executes in control mechanism, realize the fuel feeding to getting on the bus.In this process, pump motor 31 and auxiliary pump 32 are pumped from fuel tank 7 Oil, and the pressure oil that auxiliary pump 32 is pumped out is flowed to via the connection oil circuit between 32 oil outlet of auxiliary pump and the first working hole A First working hole A, with pump motor 31 from the fluid pumped out in fuel tank 7 together with after the pressurization of pump motor 31 from second Working hole B flows out to execution control mechanism.
By taking winding lifting operation process as an example, the control terminal Y62 of hoisting control valve 212 obtains electric and elevator and balances at this time The obstructed hydraulic oil of control terminal Y9 of valve 2131 so that hoisting control valve 212 is in the first working condition (upper) and elevator Balanced valve 2131 is in the first working condition (left position), therefore, the pressure oil and hydraulic energy that upper car owner's fueller is supplied The pressure oil that amount conversion equipment 3 is supplied can flow into elevator horse via hoisting control valve 212 and elevator balanced valve 2131 Up to 211 liter mouth H, and from mouthful D is fallen fuel tank 7 is back to via the hoisting control valve 212 and the second check valve 24 again so that Hoist motor 211 can drive elevator to rotate forward, and drive weight raising, realize winding lifting operation.
Similarly, in the operation process of elevator whereabouts, the control terminal Y61 of hoisting control valve 212 is powered and elevator is flat The control terminal Y9 of weighing apparatus valve 2131 leads to hydraulic oil so that hoisting control valve 212 is in the second working condition (bottom) and elevator Balanced valve 2131 is in the second working condition (right position), therefore, the pressure oil and hydraulic energy that upper car owner's fueller is supplied The pressure oil that is supplied of amount conversion equipment 3 can flow into mouthful D that falls of hoist motor 211 via hoisting control valve 212, and from It rises mouth H and is back to fuel tank 7 via elevator balanced valve 2131, hoisting control valve 212 and the second check valve 24 again so that elevator Motor 211 can drive elevator to invert, and drive weight-drop, realize elevator whereabouts operation.
Similarly, in luffing raising operation process, pressure oil and hydraulic energy that upper car owner's fueller is supplied turn The pressure oil that changing device 3 is supplied can be flowed via the left position of the upper and luffing balanced valve 2231 of luffing lift controil valve 222 Enter the rodless cavity of amplitude oil cylinder 221, and the fluid in 221 rod chamber of amplitude oil cylinder can be via 222 He of luffing lift controil valve Second check valve 24 is back to fuel tank 7 so that the cylinder rod of amplitude oil cylinder 221 is stretched out, and weight raising is driven, and realizes that luffing raising is made Industry；And in the operation process of luffing whereabouts, 3 institute of pressure oil and energy transition device that upper car owner's fueller is supplied The pressure oil of supply also can be via the next rod chamber for flowing into amplitude oil cylinder 221 of luffing lift controil valve 222, and luffing is oily Fluid in 221 rodless cavity of cylinder can be via the right position of luffing balanced valve 2231, luffing lift controil valve 222 and the second check valve 24 are back to fuel tank 7 so that the cylinder rod of amplitude oil cylinder 221 is retracted, and weight is driven to decline, and realizes luffing whereabouts operation.
During getting on the bus execution whereabouts operation (operation of elevator whereabouts and the operation of luffing whereabouts), pressure of getting on the bus can be utilized The detection of detection device 55 executes the pressure of control mechanism, and judges whether to need to whereabouts operation according to the pressure value detected Gravitional force in journey is recycled, if desired, then initiating task energy recovery function.
(4) operation energy recovery process is divided into two kinds of situations：
(41) elevator whereabouts operation energy recovery process：In the operation process of elevator whereabouts, if getting on the bus pressure-detecting device 55 detect and need to recycle the energy in the operation process of elevator whereabouts, then can give the control of energy regenerating switching valve 54 Y51 is held to be powered, control energy regenerating switching valve 54 switches to the first valve position (right position), and switching valve of getting on or off the bus at this time 4 is in second Working condition (right position), elevator balanced valve 2131 are in the first working condition (left position), and the first accumulation of energy control valve 53 is in first The obstructed oil in hydraulic control end of working condition (left position), hydraulic control one-way valve 33 (is cut by the connection oil circuit of the first working hole A to fuel tank 7 Only), clutch 81 is in engagement state, so, control pump motor 31 switches to motor operating conditions, then from liter in falling process of heavy The hydraulic oil of mouth H outflows can be under the driving effect of pump motor 31 via energy regenerating switching valve 54, switching valve of getting on or off the bus 4, the second working hole B, the first working hole A and the first accumulation of energy control valve 53 flow into the first accumulator 51, make the operation of elevator whereabouts The gravitional force lost in the process is converted into hydraulic energy and is stored in the first accumulator 51, realizes elevator whereabouts operation energy Recycle function.
In above-mentioned elevator whereabouts operation energy recovery process, weight can be controlled by adjusting the discharge capacity of pump motor 31 Falling speed, due to no longer needing to adjust weight-drop speed using elevator balanced valve 2131, contribute to reduction system Fever improves system performance；Furthermore, it is possible to the mechanical energy further exported using the pump motor 31 for working in motor operating conditions come Assist prime mover 1 drives upper car owner's fueller work, and control hoisting control valve 212 be in the second working condition (under Position) and elevator balanced valve 2131 be in the first working condition so that upper car owner's fueller in this process can be through first singly It is to fall a mouthful D repairings to valve 23 and hoisting control valve 212, this can be reduced is emptied cavitation erosion risk because falling a mouthful D, contributes to Extend the service life of hoist motor 211, and helps to improve the stationarity of the energy process.
In addition, cause weight to fall suddenly due to pump motor 31 switches to motor operating conditions by pump condition suddenly in order to prevent, The weight-drop safety in elevator whereabouts operation energy recovery process is further increased, horse can also be switched in pump motor 31 First control pump motor 31 works in pump condition before up to operating mode so that pump motor 31 can be by making by the second working hole B to liter Pressure is built full of pressure oil in connection oil circuit between mouth H and holds load, and then adjusting pump motor 31 again makes it gradually switch to Motor operating conditions, can prevent in this way because not in advance in the second working hole B to the connection oil circuit risen between mouth H it is oil-filled build pressure due to make The moment opened in hoist brake at hoist motor 211 generates moment high speed rotation, causes weight-drop to tremble, influences to fall Stationarity.
(42) luffing whereabouts operation energy recovery process：When need in the operation process of luffing whereabouts gravitional force carry out When recycling, energy regenerating switching valve 54 can be controlled and switch to the second valve position (left position), and controlled at luffing lift controil valve 222 In third working condition (middle position), similarly with above-mentioned elevator whereabouts operation energy recovery process at this time, switching valve of getting on or off the bus 4 In the second working condition (right position), the first accumulation of energy control valve 53 is also at the first working condition (left position), hydraulic control one-way valve 33 Hydraulic control end also obstructed oil (i.e. by the connection oil circuit of the first working hole A to fuel tank 7 cut-off), clutch 81 is also at joint shape State, so, control luffing balanced valve 2231 is in the second working condition (right position), and controls pump motor 31 and switch to motor work Condition, the then hydraulic oil flowed out from 221 rodless cavity of amplitude oil cylinder in falling process of heavy can be made in the driving of pump motor 31 Via luffing balanced valve 2231, energy regenerating switching valve 54, switching valve of getting on or off the bus 4, the second working hole B, the first working hole A under And first accumulation of energy control valve 53 flow into the first accumulator 51 in, so that the gravitional force lost in the operation process of luffing whereabouts is turned It turns to hydraulic energy to be stored in the first accumulator 51, realizes luffing whereabouts operation energy recovery function.In this process, due to becoming Width lift controil valve 222 is in third working condition, and the second valve port is connected to the 4th valve port, therefore, can be by second It is passed through another oil sources at valve port to realize the repairing of the rod chamber to amplitude oil cylinder 221, prevents the generation of emptying phenomenon.
In order to it is more stable and more effectively control luffing whereabouts operation energy recovery process in weight-drop speed, becoming The starting stage (2231 right valve ports of luffing balanced valve are not yet opened completely) of width whereabouts operation energy recovery process, it can pass through The openings of sizes of luffing 2231 right valve ports of balanced valve is controlled to adjust weight-drop speed, realizes fine motion dropping process, at this time Pump motor 31 can be controlled and work in motor small displacement operating mode；Later until 2231 right valve ports of luffing balanced valve open it completely Afterwards, then the falling speed of weight can be controlled by adjusting the discharge capacity of pump motor 31.
Moreover, similarly with elevator whereabouts operation energy recovery process, in order to further increase luffing whereabouts operation energy Weight-drop safety in removal process can also control pump motor 31 and first work in pump condition realization and build pressure, then gradually control Pump motor 31 processed switches to motor operating conditions.
It should be noted that in above-mentioned elevator whereabouts operation energy recovery process, and in the operation of above-mentioned luffing whereabouts In energy recovery process, the pressure oil that auxiliary pump 32 is exported stores together with the hydraulic oil that pump motor 31 is exported via first It can be stored in the first accumulator 51 of inflow of control valve 53；Also, the first energy-storage pressure detection device 52 is to the first accumulation of energy Pressure in device 51 is detected, when the first energy-storage pressure detection device 52 detects that the pressure in the first accumulator 51 reaches one After determining threshold value, the control terminal Y1 of check valve control valve 331 can be given to be powered so that hydraulic control one-way valve 33 is double because of the logical oil in hydraulic control end To opening, so that the hydraulic oil that pump motor 31 and auxiliary pump 32 are exported can flow through hydraulic control one-way valve 33 together returns to oil Case 7 carries out off-load.
In addition it is also necessary to explanation, the energy that either above-mentioned elevator whereabouts operation energy recovery process is recycled, also It is the energy recycled in above-mentioned luffing whereabouts operation energy recovery process, can be again subject to when getting on the bus lower subjob It utilizes, need to only control pump motor 31 and work in pump condition, and control the first accumulation of energy control valve 53 and switch to the second working condition (right side Position), then under the driving effect of pump motor 31, stored pressure oil can be released in the first accumulator 51, output to the One working hole A, the oil absorbency of service hoisting pump motor 31 prevent the generation of pump motor 31 to be emptied so that hydraulic energy converting means It can be preferably the normal operation process fuel feeding got on the bus to set 3.
As it can be seen that being based on crane hydraulic control system shown in FIG. 1, which can conveniently realize traveling energy and return Function, elevator whereabouts operation energy recovery function and luffing whereabouts operation energy recovery function are received, due to that can make to travel The gravitional force in kinetic energy and whereabouts operation process in braking process is used again, therefore, can be effectively reduced The energy loss caused by these energy are converted into due to heat energy dissipation falls, realizes the purpose of energy-saving and emission-reduction.Moreover, the implementation The structure of example crane hydraulic control system is relatively simple, and cost is relatively low, is implemented separately in above three energy recovery function Any one when, only need to control clutch controller 82,54 3 elements of pump motor 31 and energy regenerating switching valve (two ratio Example signal and two switching signals), control process is simpler, control accuracy higher.
In the above-described embodiments, the first energy-storage pressure detection device 51, the second energy-storage pressure detection device 52 and pressure of getting on the bus The structure types such as pressure sensor may be used in force checking device 55.In addition, it will be appreciated by those skilled in the art that above-mentioned In embodiment, each hydraulic valve to be commutated using automatically controlled mode can also actually use the modes such as hydraulic control or Mechanical course to commutate, Similarly, each hydraulic valve to be commutated using hydraulic control mode can also actually be commutated using an electronically or mechanically modes such as control；And And although each hydraulic valve shown in above-described embodiment is all made of single valve arrangement, each working condition of each hydraulic valve with it is respective Each valve position corresponds, but it should be recognized that each hydraulic valve actually can also be using the composite structure of several valves come real Now corresponding function, in this case, each working condition of each hydraulic valve are no longer limited to some with some valve Valve position corresponds to, but these modifications should also be as within protection scope of the present invention.
The foregoing is merely exemplary embodiment of the present invention, are not intended to limit the invention, all spirit in the present invention Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (20)

1. a kind of crane hydraulic control system, which is characterized in that including that can drive prime mover (1) of crane running, use Implement the execution control mechanism of operation in the executing agency for controlling the crane, there is be connected by power with described prime mover (1) The energy transition device (3) of state exercises energy recycle device and operation energy recycle device, wherein：
The energy transition device (3) includes the pump motor that can switchably work in pump condition and motor operating conditions (31), the pump motor (31) have with fuel tank (7) can the first working hole (A) for connecting of break-make and with the execution control mechanism Can break-make connection the second working hole (B)；The operation energy recycle device includes can break-make with first working hole (A) The first accumulator (51) of connection, the traveling energy recycle device includes that can be connect to break-make with second working hole (B) Second accumulator (61)；
The operation energy recycle device coordinates with the energy transition device (3), can execute the executing agency Gravitional force in weight-drop operation process is converted into hydraulic energy and is stored in first accumulator (51), realizes operation energy Amount recycling function, at this point, the pump motor (31) is in the motor operating conditions, first working hole (A) stores with described first Can device (51) be connected to and by first working hole (A) to the fuel tank (7) oil circuit disconnect, second working hole (B) with The execution control mechanism connection is simultaneously disconnected with second accumulator (61)；
The traveling energy recycle device coordinates with the energy transition device (3), can brake crane running Mechanical energy in journey is converted into hydraulic energy and is stored in realization traveling energy recovery function in second accumulator (61), at this point, The pump motor (31) is in the pump condition, and first working hole (A) is connected to the fuel tank (7), second work Mouth (B) is connected to second accumulator (61) and is disconnected with the execution control mechanism.
2. crane hydraulic control system according to claim 1, which is characterized in that the energy transition device (3) hydraulic oil can also be supplied for the execution control mechanism when the executing agency normally executes operation, at this point, the pump Motor (31) is in the pump condition, and first working hole (A) is connected to the fuel tank (7), second working hole (B) with The execution control mechanism connection is simultaneously disconnected with second accumulator (61).
3. crane hydraulic control system according to claim 1 or 2, which is characterized in that the crane hydraulic control System further includes the first on-off control device for controlling first working hole (A) and the fuel tank (7) break-make and is used for Second working hole (B) and second on-off control device for executing control mechanism break-make are controlled, the operation energy returns Receiving apparatus further includes controlling dress for controlling first accumulator (51) and the third break-make of the first working hole (A) break-make It sets, the traveling energy recycle device further includes logical with second working hole (B) for controlling second accumulator (61) The 4th disconnected on-off control device, wherein：
When realizing the operation energy recovery function, the first on-off control device control is by first working hole (A) Oil circuit to the fuel tank (7) disconnects, and second on-off control device controls second working hole (B) and executes control with described Mechanism connection processed, the third on-off control device control first working hole (A) and are connected to first accumulator (51), And the 4th on-off control device controls second working hole (B) and is disconnected with second accumulator (61)；
When realizing the traveling energy recovery function, first on-off control device control first working hole (A) with Fuel tank (7) connection, it is disconnected with the execution control mechanism that second on-off control device controls second working hole (B) It opens, and the 4th on-off control device controls second working hole (B) and is connected to second accumulator (61).
4. crane hydraulic control system according to claim 3, which is characterized in that
First on-off control device includes hydraulic control one-way valve (33), oil inlet and the oil of the hydraulic control one-way valve (33) Case (7) is connected to, and the oil outlet of the hydraulic control one-way valve (33) is connected to first working hole (A)；And/or
Second on-off control device includes getting on or off the bus switching valve (4), the switching valve of getting on or off the bus (4) include the first valve port and Second valve port, the first valve port of the switching valve of getting on or off the bus (4) are connected to second working hole (B), the switching of getting on or off the bus Second valve port of valve (4) is connected to the execution control mechanism, and the switching valve of getting on or off the bus (4) have the first working condition and Second working condition, when the switching valve of getting on or off the bus (4) is in the first working condition, the of the switching valve of getting on or off the bus (4) One valve port and the second valve port disconnect, when the switching valve of getting on or off the bus (4) is in the second working condition, the switching valve of getting on or off the bus (4) the first valve port is connected to the second valve port；And/or
The third on-off control device includes the first accumulation of energy control valve (53), and the first accumulation of energy control valve (53) includes first Valve port and the second valve port, the first valve port of the first accumulation of energy control valve (53) are connected to first working hole (A), and described Second valve port of one accumulation of energy control valve (53) is connected to first accumulator (51), and the first accumulation of energy control valve (53) has There are the first working condition and the second working condition, it is described when the first accumulation of energy control valve (53) is in the first working condition First valve port of the first accumulation of energy control valve (53) and the second valve port disconnect, alternatively, the first of the first accumulation of energy control valve (53) Valve port and the second valve port work as institute along the direction unilaterally connected by first working hole (A) to first accumulator (51) When stating the first accumulation of energy control valve (53) and being in the second working condition, the first valve port and second of the first accumulation of energy control valve (53) Valve port is connected to；And/or
4th on-off control device includes the second accumulation of energy control valve (63), and the second accumulation of energy control valve (63) includes first Valve port and the second valve port, the first valve port of the second accumulation of energy control valve (63) are connected to second working hole (B), and described Second valve port of two accumulation of energy control valves (63) is connected to second accumulator (61), and the second accumulation of energy control valve (63) has There are the first working condition and the second working condition, it is described when the second accumulation of energy control valve (63) is in the first working condition First valve port of the second accumulation of energy control valve (63) and the second valve port disconnect, when the second accumulation of energy control valve (63) is in the second work When making state, the first valve port of the second accumulation of energy control valve (63) is connected to the second valve port.
5. crane hydraulic control system according to claim 4, which is characterized in that
The control mechanism that executes includes executing winding lifting and the operation of elevator whereabouts for controlling the elevator of the executing agency Winch control mechanism, the winch control mechanism include with rise mouth (H) He Luokou (D) a hoist motor (211), it is described on Second valve port of switching valve of getting off (4) is connect with the liter mouth (H), and is executed when the winch control mechanism controls the elevator When the elevator weight-drop operation, the second valve port of the switching valve of getting on or off the bus (4) can be connected to the liter mouth (H), with Realize elevator whereabouts operation energy recovery function；And/or
The control mechanism that executes includes the luffing that luffing raising and the operation of luffing whereabouts are executed for controlling the executing agency Control mechanism, the luffing control mechanism include amplitude oil cylinder (221), the second valve port of the switching valve of getting on or off the bus (4) and institute The rodless cavity connection of amplitude oil cylinder (221) is stated, and luffing whereabouts is executed when the luffing control mechanism controls the executing agency When operation, the second valve port of the switching valve of getting on or off the bus (4) can be connected to the rodless cavity of the amplitude oil cylinder (221), with reality Existing luffing whereabouts operation energy recovery function.
6. crane hydraulic control system according to claim 5, which is characterized in that the execution control mechanism includes institute Winch control mechanism and the luffing control mechanism are stated, the operation energy recycle device further includes being set to described get on or off the bus to cut Change the second valve port of valve (4) and the energy regenerating switching device executed between control mechanism, the energy regenerating switching dress Set the second valve port for controlling the switching valve (4) of getting on or off the bus switchably with the liter mouth (H) and the amplitude oil cylinder (221) connection in rodless cavity, is realized with switching under the elevator whereabouts operation energy recovery function and the luffing Fall operation energy recovery function.
7. crane hydraulic control system according to claim 6, which is characterized in that the energy regenerating switching device packet Energy regenerating switching valve (54) is included, the energy regenerating switching valve (54) includes the first valve port, the second valve port and third valve port, institute The first valve port for stating energy regenerating switching valve (54) is connected to the second valve port of the switching valve of getting on or off the bus (4), and the energy returns The second valve port for receiving switching valve (54) is connected to the liter mouth (H), the third valve port of the energy regenerating switching valve (54) and institute The rodless cavity connection of amplitude oil cylinder (221) is stated, and the energy regenerating switching valve (54) has the first working condition and the second work Make state, when the energy regenerating switching valve (54) is in the first working condition, the of the energy regenerating switching valve (54) One valve port is connected to the second valve port and third valve port ends, when the energy regenerating switching valve (54) is in the second working condition When, the first valve port of the energy regenerating switching valve (54) is connected to third valve port and the second valve port ends.
8. crane hydraulic control system according to claim 7, which is characterized in that the energy regenerating switching valve (54) Further include the 4th valve port, the 4th valve port of the energy regenerating switching valve (54) is connected to the execution control mechanism, when described When energy regenerating switching valve (54) is in the first working condition and the second working condition, the of the energy regenerating switching valve (54) Four valve ports are turned off, and the energy regenerating switching valve (54) also has third working condition, when the energy regenerating switching valve (54) when being in third working condition, the 4th valve port of the energy regenerating switching valve (54) is connected to the first valve port and the second valve Mouth and third valve port are turned off, so that the energy transition device (3) can also normally execute work in the executing agency It is the execution control mechanism fuel feeding when industry.
9. crane hydraulic control system according to claim 8, which is characterized in that
The winch control mechanism further includes hoist motor control device, and the hoist motor control device is for controlling the liter Mouthful (H) and the oil inlet fallen in mouth (D) and another is fuel-displaced, the 4th valve port of the energy regenerating switching valve (54) leads to The hoist motor control device is crossed to connect with the hoist motor (211)；And/or
The luffing control mechanism further includes amplitude oil cylinder control device, and the amplitude oil cylinder control device is for controlling the change An oil inlet in the rod chamber and rodless cavity of width oil cylinder (221) and another is fuel-displaced, the energy regenerating switching valve (54) 4th valve port is connect by the amplitude oil cylinder control device with the amplitude oil cylinder (221).
10. crane hydraulic control system according to claim 9, which is characterized in that
The hoist motor control device includes hoisting control valve (212), and the hoisting control valve (212) includes the One valve port, the second valve port, third valve port and the 4th valve port, the first valve port and the energy of the hoisting control valve (212) The 4th valve port connection of amount recycling switching valve (54), the second valve port and the fuel tank (7) of the hoisting control valve (212) Connection, the third valve port of the hoisting control valve (212) can be connect to break-make with the liter mouth (H), the hoisting 4th valve port of control valve (212) is connected to the mouth (D) that falls, and the hoisting control valve (212) has the first work shape State and the second working condition, when the hoisting control valve (212) is in the first working condition, the hoisting control First valve port of valve (212) is connected to third valve port and the second valve port is connected to the 4th valve port, when the hoisting control valve (212) when being in the second working condition, the first valve port of the hoisting control valve (212) is connected to and second with the 4th valve port Valve port is connected to third valve port；And/or
The amplitude oil cylinder control device includes luffing lift controil valve (222), and the luffing lift controil valve (222) includes the One valve port, the second valve port, third valve port and the 4th valve port, the first valve port and the energy of the luffing lift controil valve (222) The 4th valve port connection of amount recycling switching valve (54), the second valve port and the fuel tank (7) of the luffing lift controil valve (222) Connection, the third valve port of the luffing lift controil valve (222) can connect to break-make with the rodless cavity of the amplitude oil cylinder (221) It connects, the 4th valve port of the luffing lift controil valve (222) is connected to the rod chamber of the amplitude oil cylinder (221), the luffing Lift controil valve (222) has the first working condition and the second working condition, when the luffing lift controil valve (222) is in the When one working condition, the first valve port of the luffing lift controil valve (222) is connected to third valve port and the second valve port and the 4th Valve port is connected to, when the luffing lift controil valve (222) is in the second working condition, the luffing lift controil valve (222) The first valve port be connected to the 4th valve port and the second valve port is connected to third valve port.
11. crane hydraulic control system according to claim 10, which is characterized in that
The amplitude oil cylinder control device further includes luffing balanced valve (2231), and the luffing balanced valve (2231) includes the first valve Mouth and the second valve port, the third valve of the first valve port of the luffing balanced valve (2231) and the luffing lift controil valve (222) Mouth is connected to, the rodless cavity connection of amplitude oil cylinder (221) described in the second valve port of the luffing balanced valve (2231), and the luffing Balanced valve (2231) has the first working condition and the second working condition, when the luffing balanced valve (2231) is in the first work When state, the first valve port and the second valve port of the luffing balanced valve (2231) are along by the luffing lift controil valve (222) Third valve port to the amplitude oil cylinder (221) rodless cavity direction unilaterally connected, at the luffing balanced valve (2231) When the second working condition, the first valve port of the luffing balanced valve (2231) is connected to the second valve port；
The third valve port of the energy regenerating switching valve (54) is connected to the first valve port of the luffing balanced valve (2231).
12. crane hydraulic control system according to claim 10, which is characterized in that the hoisting control valve (212) the first valve port is also connect with upper car owner's fueller of crane, so that upper car owner's fueller also can be The winch control mechanism fuel feeding；And/or the first valve port of the luffing lift controil valve (222) is also supplied with the upper car owner Oily device connection, so that upper car owner's fueller also can be the luffing control mechanism fuel feeding.
13. crane hydraulic control system according to claim 12, which is characterized in that the hoisting control valve (212) the 4th valve port of the first valve port and the energy regenerating switching valve (54) is along by the energy regenerating switching valve (54) The 4th valve port to the hoisting control valve (212) the first valve port direction unilaterally connected, and the hoisting control It is controlled along by the main fueller to the hoisting between the first valve port and the main fueller of valve (212) processed The direction unilaterally connected of first valve port of valve (212)；And/or the first valve port of the luffing lift controil valve (222) with it is described 4th valve port of energy regenerating switching valve (54) is along the 4th valve port by the energy regenerating switching valve (54) to the luffing The direction unilaterally connected of first valve port of lift controil valve (222), and the first valve port of the luffing lift controil valve (222) with Along by the main fueller to the side of the first valve port of the luffing lift controil valve (222) between the main fueller To unilaterally connected.
14. crane hydraulic control system according to claim 1, which is characterized in that crane hydraulic control system System further includes power transmission controller, and the power transmission controller is for controlling described prime mover (1) and the hydraulic pressure Energy conversion device switches between (3) between be connected by power state and power off state, wherein is realizing the traveling energy During amount recycling function and during realizing the operation energy recovery function, the power transmission controller It controls and is in be connected by power state between the energy transition device (3) and described prime mover (1).
15. crane hydraulic control system according to claim 14, which is characterized in that normally held in the executing agency During row operation, the power transmission controller also controls the energy transition device (3) and described prime mover (1) be connected by power state is between.
16. crane hydraulic control system according to claim 1, which is characterized in that the energy transition device (3) further include auxiliary pump (32), the oil inlet of the auxiliary pump (32) is connected to the fuel tank (7), the auxiliary pump (32) Oil outlet is connected to first working hole (A).
17. crane hydraulic control system according to claim 16, which is characterized in that the auxiliary pump (32) it is fuel-displaced Mouth is also connect with second working hole (B), and when the pump motor (31) is in the motor operating conditions, the auxiliary pump (32) oil outlet can be with second working hole (B) along the oil outlet by the auxiliary pump (32) to second work The direction unilaterally connected of mouth (B), so that the auxiliary pump (32) can be when the pump motor (31) be in the motor operating conditions For the pump motor (31) repairing.
18. crane hydraulic control system according to claim 16, which is characterized in that the energy transition device (3) further include being connected to overflow valve (342) between the oil outlet of the auxiliary pump (32) and second working hole (B), it is described The oil inlet of overflow valve (342) is connected to second working hole (B), oil outlet and the auxiliary of the overflow valve (342) Pump the oil outlet connection of (32).
19. crane hydraulic control system according to claim 1, which is characterized in that the operation energy recycle device Further include the first energy-storage pressure detection device (52), the first energy-storage pressure detection device (52) stores for detecting described first The pressure of energy device (51)；And/or the traveling energy recycle device further includes the second energy-storage pressure detection device (62), it is described Second energy-storage pressure detection device (62) is used to detect the pressure of second accumulator (61)；And/or the operation energy returns Receiving apparatus further includes pressure-detecting device (55) of getting on the bus, and the pressure-detecting device of getting on the bus (55) described executes control for detecting The pressure of mechanism.
20. a kind of crane, including executing agency, which is characterized in that the crane further includes as claim 1-19 is any The crane hydraulic control system.
CN201611257503.2A 2016-12-30 2016-12-30 Crane hydraulic control system and crane Active CN106678098B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611257503.2A CN106678098B (en) 2016-12-30 2016-12-30 Crane hydraulic control system and crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611257503.2A CN106678098B (en) 2016-12-30 2016-12-30 Crane hydraulic control system and crane

Publications (2)

Publication Number Publication Date
CN106678098A CN106678098A (en) 2017-05-17
CN106678098B true CN106678098B (en) 2018-08-28

Family

ID=58872431

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611257503.2A Active CN106678098B (en) 2016-12-30 2016-12-30 Crane hydraulic control system and crane

Country Status (1)

Country Link
CN (1) CN106678098B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107190747A (en) * 2017-07-21 2017-09-22 苏州郑晓刚液压制造有限公司 Hydraulic excavator piling equipment
CN107472114B (en) * 2017-08-17 2023-10-17 中国煤炭科工集团太原研究院有限公司 Soil pick-up car for coal mine with electro-hydraulic coordination soil pick-up control function
CN107720642A (en) * 2017-09-07 2018-02-23 美通重工有限公司 Aerial work platform receives arm-type valve group automatically
CN107514396A (en) * 2017-10-12 2017-12-26 徐州徐工随车起重机有限公司 One kind regeneration hydraulic lock
CN108591144B (en) * 2018-07-02 2023-07-25 福建工程学院 Hydraulic system of motor-driven double-dosing pump double-accumulator distributed direct-drive excavator
CN109340200B (en) * 2018-11-29 2020-08-28 中联重科股份有限公司 Hydraulic transmission control oil way, hydraulic transmission control method and engineering machinery
CN110848181B (en) * 2019-10-18 2021-04-23 中联重科股份有限公司 Hydraulic transmission system and crane
WO2021097699A1 (en) * 2019-11-20 2021-05-27 徐州重型机械有限公司 Hydraulic system
CN112555236A (en) * 2020-11-30 2021-03-26 三一海洋重工有限公司 Potential energy recovery system, control method thereof and engineering equipment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE455853B (en) * 1986-10-31 1988-08-15 Stromsholmens Mek Verkstad DEVICE FOR A HYDRAULIC WORKING EQUIPMENT FOR ENERGY RECOVERY
CN103671365B (en) * 2012-09-23 2015-12-02 山重建机有限公司 A kind of energy recovery and reuse device
DE102013227035A1 (en) * 2013-12-20 2015-06-25 Hamm Ag Drive system, in particular for a self-propelled construction machine, in particular soil compactor
CN204226298U (en) * 2014-10-31 2015-03-25 徐州重型机械有限公司 A kind of system and hoist reclaiming and utilize travelling brake energy
CN204400467U (en) * 2014-11-24 2015-06-17 徐州重型机械有限公司 Crane hoisting energy regenerating and reutilization system and hoisting crane
CN104879349B (en) * 2015-04-13 2017-03-29 徐州重型机械有限公司 For energy regenerating and the hydraulic system for utilizing and engineering machinery vehicle
CN104930001A (en) * 2015-06-12 2015-09-23 叶丹 Energy-saving hydraulic system and engineering machine
CN105697475B (en) * 2016-03-16 2017-08-29 太原理工大学 A kind of potential energy recycling system and method for high-order extractor

Also Published As

Publication number Publication date
CN106678098A (en) 2017-05-17

Similar Documents

Publication Publication Date Title
CN106678098B (en) Crane hydraulic control system and crane
EP3543546B1 (en) Crane hydraulic control system and crane
CN107420384B (en) System is used in the storage of lifting device gravitional force P-V
CN102203352B (en) Work machine drive control device
CN105074093B (en) Hydraulic hybrid swing drive system for excavators
CN104477798B (en) The principal arm luffing control system of crane and crane
CN103732835B (en) System and method for recovering energy and balancing hydraulic system load
CN108180188A (en) A kind of engineering machinery movable arm potential energy recycle and reuse electrohydraulic control system
CN108978775B (en) Series-parallel mechanical hybrid power system for excavator based on flywheel
CN104632729B (en) Rotary drilling rig main winch hydraulic system
CN103541944B (en) Rotary buffering valve, revolution buffering control device and hydraulic system of crane
CN102912823A (en) Rotary energy saving system of excavator
CN105804147B (en) A kind of hydraulic crawler excavator revolving dial energy conserving system
CN105544631B (en) A kind of control loop of hydraulic shovel equipment
CN102616705B (en) Energy-saving forklift hydraulic system with energy recovery function
CN105604121B (en) A kind of control loop of engineer operation armament-related work device
CN108894274B (en) Excavator gyration energy recuperation and system of recycling
CN103350964B (en) Backwards-tilting prevention hydraulic control system of arm support and tower crane
CN103896156A (en) Energy-saving hydraulic system for crane and crane
CN103950870A (en) Forklift hydraulic system with energy recovery and double-pump oil supply functions
CN107061430A (en) The hoisting system of minus flow hydraulic circuit control
CN106715801A (en) Hydraulic circuit for construction equipment
CN106088208A (en) Excavator revolution hydraulic control system
JP2016080098A (en) Driving system of hydraulic working machine
CN108953309B (en) Energy recovery and recycling hydraulic system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant