CN109132909A - winding hydraulic control system and crane - Google Patents
winding hydraulic control system and crane Download PDFInfo
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- CN109132909A CN109132909A CN201811180490.2A CN201811180490A CN109132909A CN 109132909 A CN109132909 A CN 109132909A CN 201811180490 A CN201811180490 A CN 201811180490A CN 109132909 A CN109132909 A CN 109132909A
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- elevator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/42—Control devices non-automatic
- B66D1/44—Control devices non-automatic pneumatic of hydraulic
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- Types And Forms Of Lifts (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of winding hydraulic control system and cranes, belong to engineering machinery field.Winding hydraulic control system includes: elevator hydraulic motor, and brake, main oil pump, main oil pump is connected with elevator hydraulic motor, for elevator hydraulic motor fuel feeding；First reversal valve, the first reversal valve are set between elevator hydraulic motor and main oil pump；Balanced valve, balanced valve are set between the first hydraulic fluid port and the second hydraulic fluid port；Fuel tank, fuel tank distinguish main oil pump and the connection of the first reversal valve；Oil pressure cntrol mechanism.This winding hydraulic control system and crane can be effectively prevented hydraulic motor and hydraulic shock occur, slips hook reversion, and brake issues sliding friction, and generation mechanical collision simultaneously can generate slight sinkage with sound and weight and occur between speed reducer internal tooth.Therefore, the present invention can effectively promote the service life of brake and speed reducer, improve stationarity, precision, safety and the operating experience of client of elevator lifting.
Description
Technical field
The present invention relates to engineering machinery fields, in particular to a kind of winding hydraulic control system and crane.
Background technique
The crane hoisting system of hydraulic-driven can be divided into open type elevator according to hydraulic circuit principle pattern and close
Formula elevator.Open type hoisting system includes that wirerope, reel, speed reducer (band normally closed brake), hydraulic motor, balanced valve are (logical
Be normally placed in elevator and hook up side), main reversing valve, main overflow valve, main oil pump, brake control valve, precursor overflow valve, guide's oil pump
Deng.Its working principle is that: main oil pump controls hydraulic motor by main reversing valve, drives speed reducer+reel and wirerope, realizes volume
It raises to hang load and hook up and pilot oil source is passed through by brake control valve and is controlled with off the hook movement, the opening and closing of brake.In this process
In, brake plays static brake and latch functions in elevator stationary state；Balanced valve starts and stops movement moment in elevator,
It plays dynamic brake and load keeps function.
In public technology, generallys use timing control and realize brake, brake control valve, main reversing valve, it is main to overflow
Flow the control of valve, main oil pump.In elevator action process: firstly, brake control valve opens brake using pilot oil source pressure,
Load force is transmitted to hydraulic motor, generates load retentivity by the closing chamber oil pressure between hydraulic motor and balanced valve；Braking
After device is opened, main reversing valve, main overflow valve successively works；Finally, oil pump capacity controls, realizes fuel feeding, driven by balanced valve
Hydraulic motor work.
Disadvantage of this is that: weight is parked in static holding in the air, and reducer brake bears load force, due to
There is leakage in elevator hydraulic motor, the closing chamber between elevator hydraulic motor and balanced valve is caused not set up enough loads
Support pressure, therefore, during elevator secondary action (raising or decentralization), when brake open when, load force rapidly by
Brake is transmitted to hydraulic motor, and the closing chamber between hydraulic motor and balanced valve must be set up and keep load pressure ability
Load is held, at this point, leaking since hydraulic motor exists, the compressibility of oil liquid, between hydraulic motor and speed reducer cooperation presence
There is cooperation backlash in gap and speed reducer internal gear, cause hydraulic motor that hydraulic shock occurs, slip hook reversion, brake hair
Mechanical collision occurs between speed reducer internal tooth and can generate slight sinkage with sound and weight for sliding friction out.This
Kind problem directly affects the service life of brake and speed reducer, the stationarity of elevator lifting, and the operating experience of client especially exists
Under elevator severe duty, Hoisting Security is seriously endangered, it has also become one of industry technology problem.
Summary of the invention
The present invention provides a kind of winding hydraulic control systems, it is intended to solve winding hydraulic control system in the prior art and deposit
The above problem；
The present invention also provides a kind of cranes, it is intended to solve the above problem existing for crane in the prior art.
The present invention is implemented as follows:
A kind of winding hydraulic control system, comprising:
Elevator hydraulic motor is provided with the first hydraulic fluid port for controlling raising on the elevator hydraulic motor and for controlling
Second hydraulic fluid port of decentralization；
Brake, the brake is selectively abutted with the output shaft of the elevator hydraulic motor, to control the volume
Raise hydraulic motor braking；
Main oil pump, the main oil pump are connected with the elevator hydraulic motor, for the elevator hydraulic motor fuel feeding；
First reversal valve, first reversal valve is set between the elevator hydraulic motor and the main oil pump, described
First reversal valve is connected to for controlling the main oil pump with first hydraulic fluid port or second hydraulic fluid port；
Balanced valve, the balanced valve are set between first hydraulic fluid port and second hydraulic fluid port, and the balanced valve is used for
Balance the oil pressure of first hydraulic fluid port and second hydraulic fluid port；
Fuel tank, the fuel tank distinguish the main oil pump and first reversal valve connection；
Oil pressure cntrol mechanism, the oil pressure cntrol mechanism are used to record and control the oil pressure of first hydraulic fluid port, and with this
When as elevator secondary action, the unlatching control condition of the brake.
In preferred embodiments of the present invention, the first oil inlet, the first oil return opening, are provided on first reversal valve
One actuator port and the second actuator port, first actuator port are connected to first hydraulic fluid port, second working oil
Mouth is connected to second hydraulic fluid port, and first oil inlet is connected to the main oil pump, first oil return opening and the fuel tank
Connection.
Further include controller in preferred embodiments of the present invention, the controller respectively with the brake, described
One reversal valve and main oil pump control connection, to control the brake, first reversal valve and the master respectively
Operation of oil pump.
In preferred embodiments of the present invention, the oil pressure cntrol mechanism includes:
Pressure sensor, the pressure sensor are connected with the elevator hydraulic motor to measure the oil of first hydraulic fluid port
Pressure, the pressure sensor and controller control connection；
Control valve, the control valve are connected between the main oil pump and first hydraulic fluid port, and the control valve is for controlling
Make the connection between the main oil pump and first hydraulic fluid port；
Check valve, the check valve are connected between the control valve and first hydraulic fluid port, and the check valve controls liquid
Body is unidirectionally flowed into first hydraulic fluid port from the control valve.
In preferred embodiments of the present invention, the control valve is solenoid valve, the control valve and controller control
Connection.
In preferred embodiments of the present invention, it is provided with balance oil inlet, balance oil outlet on the balanced valve and puts down
Weighing apparatus control port, the balance oil inlet are connected to first actuator port, and the oil outlet is connected to first hydraulic fluid port；
The oil pressure cntrol mechanism includes:
Pressure sensor, the pressure sensor are connected with the elevator hydraulic motor to measure the oil of first hydraulic fluid port
Pressure, the pressure sensor and controller control connection；
Second reversal valve, be provided on second reversal valve the second oil inlet, the second oil return opening, third actuator port with
And the 4th actuator port, second oil inlet are connected to second hydraulic fluid port, second oil return opening is connected with the fuel tank,
The third actuator port is connected to first hydraulic fluid port, and the 4th actuator port is connected to the balance control port；
Check valve, the check valve are set between second reversal valve and first hydraulic fluid port, and the check valve is used
First hydraulic fluid port unidirectionally is flowed into from second reversal valve in control liquid.
In preferred embodiments of the present invention, second reversal valve is solenoid directional control valve, second reversal valve and institute
State controller control connection.
In preferred embodiments of the present invention, the oil pressure cntrol mechanism includes:
Pressure sensor, the pressure sensor are connected with the elevator hydraulic motor to measure the oil of first hydraulic fluid port
Pressure, the pressure sensor and controller control connection；
Accumulator, the accumulator are connected to first hydraulic fluid port；
First Solenoid ball valve and the second Solenoid ball valve, first Solenoid ball valve and second Solenoid ball valve series connection are set
It sets, first Solenoid ball valve and second Solenoid ball valve are all set between the accumulator and first hydraulic fluid port.
In preferred embodiments of the present invention, first Solenoid ball valve and second Solenoid ball valve are and the control
Device control connection.
The present invention also provides a kind of cranes, including above-mentioned winding hydraulic control system.
The beneficial effects of the present invention are:
The winding hydraulic control system that the present invention obtains by above-mentioned design utilizes oil pressure cntrol machine when in use
Structure can control the oil pressure in the closing chamber between elevator hydraulic motor and balanced valve, thus in secondary lifting or secondary decentralization
When, it can reach first with the oil pressure in the closing chamber between oil pressure cntrol mechanism controls elevator hydraulic motor and balanced valve
Preset pressure, so as to effectively prevent hydraulic motor that hydraulic shock occurs, slip hook reversion, brake issues sliding friction,
Mechanical collision occurs between speed reducer internal tooth and slight sinkage generation can be generated with sound and weight.Therefore, this hair
The bright service life that can effectively promote brake and speed reducer improves stationarity, precision, safety and the visitor of elevator lifting
The operating experience at family,
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of the winding hydraulic control system provided in the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of the winding hydraulic control system provided in the embodiment of the present invention two；
Fig. 3 is the structural schematic diagram of the winding hydraulic control system provided in the embodiment of the present invention three.
Icon: 1- pressure sensor；2- elevator hydraulic motor；4- brake；5- check valve；6- control valve；7- balanced valve；
The first reversal valve of 8-；9- controller；10- third reversal valve；The main overflow valve of 11-；12- main oil pump；14- guide's oil pump；15- accumulation of energy
Device；The second reversal valve of 16-；The first Solenoid ball valve of 17-；The second Solenoid ball valve of 18-.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present invention of protection is sought, but is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that, indicating position or the term of positional relationship are based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the equipment of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be on or below second feature
Directly contacted including the first and second features, also may include the first and second features be not direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature second spy
Right above sign and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature second feature it
Under, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of first feature horizontal height
Less than second feature.
Embodiment one
A kind of winding hydraulic control system is present embodiments provided, referring to Fig. 1, this winding hydraulic control system packet
It includes:
Elevator hydraulic motor 2, the first hydraulic fluid port for controlling raising is provided on elevator hydraulic motor 2 and for controlling under
The second hydraulic fluid port put；
Brake 4, brake 4 is selectively abutted with the output shaft of elevator hydraulic motor 2, to control elevator hydraulic motor
2 brakings；
Main oil pump 12, main oil pump 12 and elevator hydraulic motor 2 connect, for 2 fuel feeding of elevator hydraulic motor；
First reversal valve 8, the first reversal valve 8 are set between elevator hydraulic motor 2 and main oil pump 12, the first reversal valve 8
It is connected to for controlling main oil pump 12 with the first hydraulic fluid port or the second hydraulic fluid port；
Balanced valve 7, balanced valve 7 are set between the first hydraulic fluid port and the second hydraulic fluid port, balanced valve 7 for balance the first hydraulic fluid port and
The oil pressure of second hydraulic fluid port；
Fuel tank, fuel tank are connect with main oil pump 12 and the first reversal valve 8 respectively；
Oil pressure cntrol mechanism, oil pressure cntrol mechanism are used to control the oil pressure of the first hydraulic fluid port, and opening in this, as brake 4
Open control condition.
Wherein, in the present embodiment, the first reversal valve 8 has middle position, left position and the position of right position three, when the first commutation
When valve 8 is in middle position, the first actuator port and the second actuator port are connected to fuel tank；When the first reversal valve 8 is in a left side
When position, the first oil inlet and the connection of the first actuator port, the first oil return opening and the second actuator port are connected to；When the first commutation
When valve 8 is in right position, the first oil inlet and the connection of the second actuator port, the first oil return opening and the first actuator port are connected to.
Wherein, in the present embodiment, the first oil inlet, the first oil return opening, the first working oil are provided on the first reversal valve 8
Mouth and the second actuator port, the first actuator port and the connection of the first hydraulic fluid port, the second actuator port and the connection of the second hydraulic fluid port, first
Oil inlet is connected to main oil pump 12, and the first oil return opening is connected with fuel tank.
Wherein, in the present embodiment, further include controller 9, controller 9 respectively with pressure sensor 1, control valve 6, first
Reversal valve 8, third reversal valve 10, main overflow valve 11 and main oil pump 12 control connection, with respectively control brake 4, control valve 6,
First reversal valve 8, third reversal valve 10 and main oil pump 12 work.
Wherein, in the present embodiment, oil pressure cntrol mechanism includes:
Pressure sensor 1, pressure sensor 1 and elevator hydraulic motor 2 are connected to measure the oil pressure of the first hydraulic fluid port, and pressure passes
Sensor 1 and the control connection of controller 9, for recording 2 raising lateral pressure of elevator hydraulic motor；
Control valve 6, control valve 6 are connected between main oil pump 12 and the first hydraulic fluid port, and control valve 6 is for controlling 12 He of main oil pump
Connection between first hydraulic fluid port；
Check valve 5, check valve 5 are connected between control valve 6 and the first hydraulic fluid port, and check valve 5 controls liquid unidirectionally from control
Valve 6 is flowed into the first hydraulic fluid port.
Also, control valve 6 is solenoid valve, control valve 6 and the control connection of controller 9.
In the present embodiment, brake 4 is controlled by third reversal valve 10, and the setting of third reversal valve 10 pumps 14 in guide oil
Between brake 4, third reversal valve 10 and the control connection of controller 9.
At work, include the following steps:
Firstly, when elevator acts, pressure memory:
In winding lifting movement, controller 9 controls the commutation of the first reversal valve 8, it is made to work in left position, and main oil pump 12 supplies
Oil reaches the first hydraulic fluid port on elevator hydraulic motor 2 by the balance oil inlet on balanced valve 7 to the first actuator port, driving
Elevator hydraulic motor 2 does raising movement；
In elevator decentralization movement, controller 9 controls the commutation of the first reversal valve 8, it is made to work in right position, and main oil pump 12 supplies
Oil reaches the second hydraulic fluid port on elevator hydraulic motor 2, driving elevator hydraulic motor 2 does decentralization movement to the second actuator port；
In addition, controller 9 is by pressure sensor 1, in the hydraulic horse of elevator in winding lifting or decentralization action process
When will stop movement up to 2, winding lifting lateral pressure P is recorded, realizes pressure memory.
When elevator movement stops, load is kept:
When elevator acts stopping, since the first reversal valve 8 is in middle position, balanced valve 7 works, and realizes that load is kept,
Then, controller 9 closes brake 4 by third reversal valve 10.
When elevator secondary action, hoist brake 4 opens control condition:
Load is parked in the air, and when carrying out elevator secondary action, controller 9 controls control valve 6 and the first reversal valve 8 obtains
Electricity adjusts charge oil pressure by 12 Displacement Regulation of main oil pump, and by controlling main overflow valve 11.
In elevator secondary lifting, main oil pump 12 reaches elevator by 8 first actuator port of the first reversal valve and balanced valve 7
Locking chamber between hydraulic motor 2 and balanced valve 7 realizes the pressure control of the first hydraulic fluid port on elevator hydraulic motor 2, meanwhile,
Controller 9 detects the pressure of the first hydraulic fluid port on elevator hydraulic motor 2 by pressure sensor 1, and by the pressure of the first hydraulic fluid port
Control condition is opened as hoist brake 4, realizes elevator secondary lifting action control.
In the secondary decentralization of elevator, 12 oil liquid of main oil pump by control valve 6 and check valve 5 reach elevator hydraulic motor 2 with
Locking chamber between balanced valve 7 realizes the pressure control of the first hydraulic fluid port on elevator hydraulic motor 2, meanwhile, controller 9 passes through
Pressure sensor 1 detects the pressure of the first hydraulic fluid port on elevator hydraulic motor 2, and brakes the pressure of the first hydraulic fluid port as elevator
Device 4 opens control condition, realizes elevator secondary lifting or decentralization action control.Embodiment two
A kind of winding hydraulic control system is present embodiments provided, referring to Fig. 2, this winding hydraulic control system packet
It includes:
Elevator hydraulic motor 2, the first hydraulic fluid port for controlling raising is provided on elevator hydraulic motor 2 and for controlling under
The second hydraulic fluid port put；
Brake 4, brake 4 is selectively abutted with the output shaft of elevator hydraulic motor 2, to control elevator hydraulic motor
2 brakings；
Main oil pump 12, main oil pump 12 and elevator hydraulic motor 2 connect, for 2 fuel feeding of elevator hydraulic motor；
First reversal valve 8, the first reversal valve 8 are set between elevator hydraulic motor 2 and main oil pump 12, the first reversal valve 8
It is connected to for controlling main oil pump 12 with the first hydraulic fluid port or the second hydraulic fluid port；
Balanced valve 7, balanced valve 7 are set between the first hydraulic fluid port and the second hydraulic fluid port, balanced valve 7 for balance the first hydraulic fluid port and
The oil pressure of second hydraulic fluid port；
Fuel tank, fuel tank distinguish main oil pump 12 and the connection of the first reversal valve 8；
Oil pressure cntrol mechanism, oil pressure cntrol mechanism are used to control the oil pressure of the first hydraulic fluid port, and opening in this, as brake 4
Open control condition.
Wherein, in the present embodiment, the first reversal valve 8 has middle position, left position and the position of right position three, when the first commutation
When valve 8 is in middle position, the first actuator port and the second actuator port are connected to fuel tank respectively；When the first reversal valve 8 is in
When left position, the first oil inlet and the connection of the first actuator port, the first oil return opening and the second actuator port are connected to；It changes when first
When being in right position to valve 8, the first oil inlet and the connection of the second actuator port, the first oil return opening and the first actuator port connect
It is logical.
Wherein, in the present embodiment, the first oil inlet, the first oil return opening, the first working oil are provided on the first reversal valve 8
Mouth and the second actuator port, the first actuator port and the connection of the first hydraulic fluid port, the second actuator port and the connection of the second hydraulic fluid port, first
Oil inlet is connected to main oil pump 12, and the first oil return opening is connected with fuel tank.
Wherein, in the present embodiment, further include controller 9, controller 9 respectively with pressure sensor 1, the second reversal valve
16, the first reversal valve 8, third reversal valve 10, main overflow valve 11 and main oil pump 12 control connection, with respectively control brake 4,
Second reversal valve 16, the first reversal valve 8, third reversal valve 10 and main oil pump 12 work.
Wherein, in the present embodiment, balance oil inlet, balance oil outlet and balance control oil are provided on balanced valve 7
Mouthful, balance oil inlet and the connection of the first actuator port, oil outlet and the connection of the first hydraulic fluid port；
Oil pressure cntrol mechanism includes:
Pressure sensor 1, pressure sensor 1 and elevator hydraulic motor 2 are connected to measure the oil pressure of the first hydraulic fluid port, and pressure passes
Sensor 1 and the control connection of controller 9, for recording 2 raising lateral pressure of elevator hydraulic motor；
Second reversal valve 16, be provided on the second reversal valve 16 second oil inlet, the second oil return opening, third actuator port with
And the 4th actuator port, the second oil inlet and the connection of the second hydraulic fluid port, the second oil return opening are connected with fuel tank, third actuator port and the
The connection of one hydraulic fluid port, the 4th work have mouth to be connected to balance control port；
Check valve 5, check valve 5 are set between 16 third actuator port of the second reversal valve and the first hydraulic fluid port, and check valve 5 is used
The first hydraulic fluid port unidirectionally is flowed into from the 16 third actuator port of the second reversal valve in control liquid.
Wherein, in the present embodiment, the second reversal valve 16 is solenoid directional control valve, and the second reversal valve 16 and controller 9 control
Connection.
In the present embodiment, brake 4 is controlled by third reversal valve 10, and the setting of third reversal valve 10 pumps 14 in guide oil
Between brake 4, third reversal valve 10 and the control connection of controller 9.
At work, include the following steps:
When elevator acts, pressure memory:
In winding lifting movement, the first actuator port on 12 fuel feeding of main oil pump to the first reversal valve 8, by balanced valve
7 oil inlets, reach the first hydraulic fluid port on elevator hydraulic motor 2, and driving elevator hydraulic motor 2 does raising movement；
In elevator decentralization movement, the second actuator port on 12 fuel feeding of main oil pump to the first reversal valve 8 reaches elevator liquid
The second hydraulic fluid port on pressure motor 2, meanwhile, controller 9 makes the second reversal valve 16 be in obtain electric position, thus on the first reversal valve 8
The second hydraulic fluid port pressure oil by the 4th actuator port of the second reversal valve 16 be connected to 7 control port of balanced valve, open balanced valve
7, driving elevator hydraulic motor 2 does decentralization movement.
In addition, for controller 9 by pressure sensor 1, record elevator is hydraulic in winding lifting or decentralization action process
2 raising lateral pressure P of motor realizes pressure memory.
When elevator movement stops, load is kept:
When elevator acts stopping, since the first reversal valve 8 is in middle position (y-function), balanced valve 7 plays effective locking
The effect of the first hydraulic fluid port on elevator hydraulic motor 2 realizes that load is kept, and then, controller 9 is closed by third reversal valve 10
Brake 4.
It is supported in the air, when elevator secondary action, hoist brake 4 opens control condition:
Load is parked in the air, and when carrying out elevator secondary action, 12 pressure oil of main oil pump is connected to 2 He of elevator hydraulic motor
Closing chamber between balanced valve 7, controller 9 monitors pressure at this by pressure sensor 1, and is controlled, in this, as volume
It raises brake 4 and opens control condition.
For example, controller 9 issues control instruction in the movement of elevator secondary lifting, the first reversal valve 8 is made to be in left position work
Make, make 12 oil outlet oil liquid of main oil pump by the first actuator port on the first reversal valve 8,7 oil inlet of balanced valve reaches elevator
The first hydraulic fluid port on hydraulic motor 2.Then, controller 9 is realized and is supplied by controlling main overflow valve 11 and 12 stroking mechanism of main oil pump
Oil pressure and flow control.Meanwhile controller 9 monitors motor pressure in real time by 2 raising side pressure sensor 1 of elevator hydraulic motor
Power, when motor pressure, which reaches last time, acts X% (X is 0~100) value of pre-recorded load pressure, brake 4 issues control
System instruction, makes third reversal valve 10 commutate, and realizes that brake 4 opens control.In addition, main oil pump 12 goes out after brake 4 is opened
Hydraulic fluid port oil liquid sustainable supply is to 2 lifting side of elevator hydraulic motor, to realize that elevator secondary lifting acts.
In the secondary decentralization movement of elevator, controller 9 issues control instruction, so that the first reversal valve 8 is in the work of right position, makes
12 oil outlet oil liquid of main oil pump reaches the second oil on elevator hydraulic motor 2 by the first actuator port on the first reversal valve 8
Mouthful, meanwhile, controller 9 makes the second reversal valve 16 be in power failure state, and 7 control port of balanced valve connects fuel tank, and balanced valve 7 is not opened
It opens, and 12 oil outlet oil liquid of main oil pump passes through the second reversal valve 16 and check valve 5, reaches the first oil on elevator hydraulic motor 2
Mouthful.Then, controller 9 realizes charge oil pressure and flow control by controlling main overflow valve 11 and 12 stroking mechanism of main oil pump.Together
When, controller 9 monitors motor pressure in real time by 2 raising side pressure sensor 1 of elevator hydraulic motor, on motor pressure reaches
When Y% (Y is 0~100) value of the pre-recorded load pressure of secondary movement, controller 9 issues control instruction, makes third reversal valve
10 commutations realize that brake 4 opens control.In addition, controller 9 issues instruction after brake 4 is opened, make the second reversal valve
16 must be electric, and 12 oil outlet oil liquid of main oil pump opens balanced valve 7 by 16 connecting balanced valve of the second reversal valve, 7 control mouth, while single
Fuel tank is connected by the second reversal valve 16 to 5 oil inlet of valve, to realize the secondary decentralization movement of elevator.
Embodiment three
A kind of winding hydraulic control system is present embodiments provided, referring to Fig. 3, this winding hydraulic control system packet
It includes:
Elevator hydraulic motor 2, the first hydraulic fluid port for controlling raising is provided on elevator hydraulic motor 2 and for controlling under
The second hydraulic fluid port put；
Brake 4, brake 4 is selectively abutted with the output shaft of elevator hydraulic motor 2, to control elevator hydraulic motor
2 brakings；
Main oil pump 12, main oil pump 12 and elevator hydraulic motor 2 connect, for 2 fuel feeding of elevator hydraulic motor；
First reversal valve 8, the first reversal valve 8 are set between elevator hydraulic motor 2 and main oil pump 12, the first reversal valve 8
It is connected to for controlling main oil pump 12 with the first hydraulic fluid port or the second hydraulic fluid port；
Balanced valve 7, balanced valve 7 are set between the first hydraulic fluid port and the second hydraulic fluid port, balanced valve 7 for balance the first hydraulic fluid port and
The oil pressure of second hydraulic fluid port；
Fuel tank, fuel tank distinguish main oil pump 12 and the connection of the first reversal valve 8；
Oil pressure cntrol mechanism, oil pressure cntrol mechanism are used to control the oil pressure of the first hydraulic fluid port.
Wherein, in the present embodiment, the first reversal valve 8 has middle position, left position and the position of right position three, when the first commutation
When valve 8 is in middle position, the first actuator port and the first actuator port are connected to fuel tank；When the first reversal valve 8 is in a left side
When position, the first oil inlet and the connection of the first actuator port, the first oil return opening and the second actuator port are connected to；When the first commutation
When valve 8 is in right position, the first oil inlet and the connection of the second actuator port, the first oil return opening and the first actuator port are connected to.
Wherein, in the present embodiment, the first oil inlet, the first oil return opening, the first working oil are provided on the first reversal valve 8
Mouth and the second actuator port, the first actuator port and the connection of the first hydraulic fluid port, the second actuator port and the connection of the second hydraulic fluid port, first
Oil inlet is connected to main oil pump 12, and the first oil return opening is connected with fuel tank.
Wherein, in the present embodiment, further include controller 9, controller 9 respectively with pressure sensor 1, the first Solenoid ball valve
17, the second Solenoid ball valve 18, the first reversal valve 8, third reversal valve 10, main overflow valve 11 and the control connection of main oil pump 12, with
Control brake 4, the first Solenoid ball valve 17, the second Solenoid ball valve 18, the first reversal valve 8, third reversal valve 10, Yi Jizhu respectively
Oil pump 12 works.
Wherein, in the present embodiment, oil pressure cntrol mechanism includes:
Pressure sensor 1, pressure sensor 1 and elevator hydraulic motor 2 are connected to measure the oil pressure of the first hydraulic fluid port, and pressure passes
Sensor 1 and the control connection of controller 9, for recording 2 raising lateral pressure of elevator hydraulic motor；
Accumulator 15, accumulator 15 are connected to the first hydraulic fluid port；
First Solenoid ball valve 17 and the second Solenoid ball valve 18, the first Solenoid ball valve 17 and the series connection of the second Solenoid ball valve 18 are set
It sets, the first Solenoid ball valve 17 and the second Solenoid ball valve 18 are all set between accumulator 15 and the first hydraulic fluid port.
Wherein, in the present embodiment, the first Solenoid ball valve 17 and the second Solenoid ball valve 18 are connected with the control of controller 9.
In the present embodiment, brake 4 is arranged formerly by 10 control brake 4 of third reversal valve, third reversal valve 10
Between Oil Guide pump 14 and brake 4, third reversal valve 10 and the control connection of controller 9.
At work, include the following steps:
When elevator acts, pressure memory:
In winding lifting movement, controller 9 controls the commutation of the first reversal valve 8, it is made to work in left position, and main oil pump 12 supplies
The first actuator port on oil to the first reversal valve 8 reaches the first oil on elevator hydraulic motor 2 by 7 oil inlet of balanced valve
Mouthful, drive elevator hydraulic motor 2 to do raising movement, meanwhile, controller 9 makes the second Solenoid ball valve 18 be in obtain electricity condition, and first
The pressure of the first actuator port on reversal valve 8 is connected to accumulator 15 by the first Solenoid ball valve 17 and the second Solenoid ball valve 18,
Filling liquid is carried out to accumulator 15, realizes that load pressure saves；
In elevator decentralization movement, controller 9 controls the commutation of the first reversal valve 8, it is made to work in right position, and main oil pump 12 supplies
The second actuator port on oil to the first reversal valve 8 reaches the second hydraulic fluid port on elevator hydraulic motor 2, drives the hydraulic horse of elevator
Decentralization movement is done up to 2.Meanwhile 7 control port of pressure communication balanced valve of first the second actuator port on reversal valve 8, it opens
Balanced valve 7.Controller 9 makes the second Solenoid ball valve 18 be in obtain electricity condition, the oil of the first hydraulic fluid port on such elevator hydraulic motor 2
Liquid passes through the first Solenoid ball valve 17 and the second Solenoid ball valve 18, is connected to accumulator 15, carries out filling liquid to accumulator 15, realizes load
Pressure saves；
In addition, controller 9 records winding lifting by pressure sensor 1 in winding lifting or decentralization action process
Lateral pressure P realizes pressure memory.
When elevator movement stops, load is kept:
When elevator acts stopping, since the first reversal valve 8 is in middle position, controller 9 makes 18 power loss of the second Solenoid ball valve,
18 collective effect of balanced valve 7 and the second Solenoid ball valve realizes that load is kept, and then, controller 9 is closed by third reversal valve 10
Brake 4.
When elevator secondary action, hoist brake 4 opens control condition:
Load is parked in the air, and when carrying out elevator secondary action, controller 9 makes the first Solenoid ball valve 17 obtain electric, accumulator
15 by the first Solenoid ball valve 17 and the second Solenoid ball valve 18, the first hydraulic fluid port in repairing to elevator hydraulic motor 2, meanwhile, control
Device 9 processed detects the pressure of the first hydraulic fluid port on elevator hydraulic motor 2 by pressure sensor 1, and the pressure of the first hydraulic fluid port is made
Control condition is opened for hoist brake 4, realizes elevator secondary lifting or decentralization action control.
Example IV
A kind of crane is present embodiments provided, the elevator hydraulic control system provided including embodiment one into embodiment three
System.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of winding hydraulic control system characterized by comprising
Elevator hydraulic motor is provided with the first hydraulic fluid port for controlling raising on the elevator hydraulic motor and for controlling decentralization
The second hydraulic fluid port；
Brake, the brake is selectively abutted with the output shaft of the elevator hydraulic motor, to control the elevator liquid
Pressure motor braking；
Main oil pump, the main oil pump are connected with the elevator hydraulic motor, for the elevator hydraulic motor fuel feeding；
First reversal valve, first reversal valve are set between the elevator hydraulic motor and the main oil pump, and described first
Reversal valve is connected to for controlling the main oil pump with first hydraulic fluid port or second hydraulic fluid port；
Balanced valve, the balanced valve are set between first hydraulic fluid port and second hydraulic fluid port, and the balanced valve is for balancing
The oil pressure of first hydraulic fluid port and second hydraulic fluid port；
Fuel tank, the fuel tank are connect with the main oil pump and first reversal valve respectively；
Oil pressure cntrol mechanism, the oil pressure cntrol mechanism are used to record and control the oil pressure of first hydraulic fluid port.
2. winding hydraulic control system according to claim 1, which is characterized in that be provided on first reversal valve
One oil inlet, the first oil return opening, the first actuator port and the second actuator port, first actuator port and first oil
Mouth connection, second actuator port are connected to second hydraulic fluid port, and first oil inlet is connected to the main oil pump, described
First oil return opening is connected with the fuel tank.
3. winding hydraulic control system according to claim 2, which is characterized in that it further include controller, the controller
It controls and connects with the brake, first reversal valve and the main oil pump respectively, to control the brake, institute respectively
State the first reversal valve and main oil pump work.
4. winding hydraulic control system according to claim 3, which is characterized in that the oil pressure cntrol mechanism includes:
Pressure sensor, the pressure sensor are connected with the elevator hydraulic motor to measure the oil pressure of first hydraulic fluid port,
The pressure sensor and controller control connection；
Control valve, the control valve are connected between the main oil pump and first hydraulic fluid port, and the control valve is for controlling institute
State the connection between main oil pump and first hydraulic fluid port；
Check valve, the check valve are connected between the control valve and first hydraulic fluid port, and the check valve controls liquid list
First hydraulic fluid port is flowed into from the control valve.
5. winding hydraulic control system according to claim 4, which is characterized in that the control valve is solenoid valve, described
Control valve and controller control connection.
6. winding hydraulic control system according to claim 3, which is characterized in that be provided on the balanced valve balance into
Hydraulic fluid port, balance oil outlet and balance control port, the balance oil inlet is connected to first actuator port, described fuel-displaced
Mouth is connected to first hydraulic fluid port；
The oil pressure cntrol mechanism includes:
Pressure sensor, the pressure sensor are connected with the elevator hydraulic motor to measure the oil pressure of first hydraulic fluid port,
The pressure sensor and controller control connection；
Second reversal valve is provided with the second oil inlet, the second oil return opening, third actuator port and on second reversal valve
Four actuator ports, second oil inlet are connected to second hydraulic fluid port, and second oil return opening is connected with the fuel tank, described
Third actuator port is connected to first hydraulic fluid port, and the 4th work has mouth to be connected to the balance control port；
Check valve, the check valve are set between second reversal valve and first hydraulic fluid port, and the check valve is for controlling
Liquid processed is unidirectionally flowed into first hydraulic fluid port from second reversal valve.
7. winding hydraulic control system according to claim 6, which is characterized in that second reversal valve is electromagnetic switch
Valve, second reversal valve and controller control connection.
8. winding hydraulic control system according to claim 3, which is characterized in that the oil pressure cntrol mechanism includes:
Pressure sensor, the pressure sensor are connected with the elevator hydraulic motor to measure the oil pressure of first hydraulic fluid port,
The pressure sensor and controller control connection；
Accumulator, the accumulator are connected to first hydraulic fluid port；
First Solenoid ball valve and the second Solenoid ball valve, first Solenoid ball valve and second Solenoid ball valve are arranged in series, institute
It states the first Solenoid ball valve and second Solenoid ball valve is all set between the accumulator and first hydraulic fluid port.
9. winding hydraulic control system according to claim 8, which is characterized in that first Solenoid ball valve and described
Two Solenoid ball valves are connected with controller control.
10. a kind of crane, which is characterized in that including winding hydraulic control system of any of claims 1-9.
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| CN201811180490.2A CN109132909B (en) | 2018-10-10 | 2018-10-10 | Winch hydraulic control system and crane |
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| CN201811180490.2A CN109132909B (en) | 2018-10-10 | 2018-10-10 | Winch hydraulic control system and crane |
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Cited By (3)
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| CN112777503A (en) * | 2021-02-23 | 2021-05-11 | 三一汽车起重机械有限公司 | Winch device, hydraulic system thereof, use method and operation machine |
| CN114483678A (en) * | 2022-01-12 | 2022-05-13 | 浙江三一装备有限公司 | Dynamic compactor and electro-hydraulic control system thereof |
| WO2023130624A1 (en) * | 2022-01-07 | 2023-07-13 | 北京三一智造科技有限公司 | Double-winch hydraulic control system, operation machinery, and control method |
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| CN109132909B (en) | 2021-02-05 |
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