CN105917052A - Apparatus for controlling combined-operation of construction machine - Google Patents

Apparatus for controlling combined-operation of construction machine Download PDF

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Publication number
CN105917052A
CN105917052A CN201480070227.1A CN201480070227A CN105917052A CN 105917052 A CN105917052 A CN 105917052A CN 201480070227 A CN201480070227 A CN 201480070227A CN 105917052 A CN105917052 A CN 105917052A
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CN
China
Prior art keywords
pump
valve
walking
engineering machinery
composite move
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.)
Granted
Application number
CN201480070227.1A
Other languages
Chinese (zh)
Other versions
CN105917052B (en
Inventor
吕明九
郭弘燮
孔羲锡
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.)
HD Hyundai Infracore Co Ltd
Original Assignee
Doosan Infracore 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 Doosan Infracore Co Ltd filed Critical Doosan Infracore Co Ltd
Publication of CN105917052A publication Critical patent/CN105917052A/en
Application granted granted Critical
Publication of CN105917052B publication Critical patent/CN105917052B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2282—Systems using center bypass type changeover valves
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • 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
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • 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
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
    • F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

One embodiment of the present invention relates to an apparatus for controlling a combined operation of a construction machine, comprising: a first pump and a second pump for supplying under the operation of an operation unit pressurised oil to a plurality of actuators for driving and swinging operations of a construction machine; a driving control spool for interconnecting the first pump and a driving motor; a swing control spool for interconnecting the first pump and a swing motor that is positioned downstream of the driving control spool; and a driving priority valve for supplying the pressurised oil discharged from the first pump to the driving control spool and for supplying the pressurised oil discharged from the second pump to the swing control spool during the combined driving and swinging operation of the construction machine.

Description

The composite move of engineering machinery controls device
Technical field
The present embodiments relate to engineering machinery, particularly relate to engineering machinery and walking and answering of turning round The composite move that can maintain the engineering machinery of turnability during conjunction action controls device.
Background technology
Generally, the engineering machinery of such as excavator includes: electromotor；Hydraulic pump, utilizes the dynamic of electromotor Power produces hydraulic pressure；Control portion, controls the hydraulic pressure produced at hydraulic pump by hydraulic valve；Actuator, root It is operated according to hydraulic pressure.
Especially, engineering machinery drives swing arm (boom) by controlling flow and hydraulic pressure, dipper (arm), Scraper bowls (bucket) etc., specifically to work, now need to control to put on flow and the liquid of actuator Pressure.
This engineering machinery possesses at least two main pump, and these main pumps suitably distribute hydraulic oil Give walking or rocking arm operation and used.
Wherein, rocking arm operation refers to the swing arm rise/fall (Boom of engineering machinery of such as excavator Up/down), dipper is gathered (Arm crowd), and (Bucket crowd/dump) is gathered/abandoned to scraper bowl, And wave operations such as (Swing).
In the hydraulic system of existing engineering machinery, when engineering machinery walk and turn round check action time, Giving the running motor for walking and the rotary motor for revolution from a main pump discharge hydraulic oil distribution And used.
But, this hydraulic system is in the case of possessing two main pumps, the stream spued from a main pump Amount is shared with running motor and rotary motor.
Therefore, compared with rotary motor, more flow supplies to running motor, thus possesses faster , there is speed of gyration by slowly defect in the reverse side of the speed of travel.
Summary of the invention
The composite move embodiments providing a kind of engineering machinery controls device, thus at engineering machine When the walking of tool and revolution composite move so that speed of gyration and speed phase when individually carrying out revolution action With.
According to embodiments of the present invention, the composite move of engineering machinery controls device, including: the first pump and the Two pumps, according to the operation of operating portion, to for the walking of engineering machinery and multiple actuators of revolution operation Hydraulic oil is provided；Travelling control spool, connects described first pump and running motor；Rotary control valve core, It is positioned at the dirty of described travelling control spool and connects described first pump and rotary motor；And it is excellent to walk First valve, when walking and the revolution composite move of described engineering machinery, for telling from described first pump The hydraulic oil supply gone out is to described travelling control spool, for the hydraulic oil spued from described second pump is supplied Give to described rotary control valve core.
Wherein, the preferential valve of described walking may be located at the most upper of described second pump.
Wherein, it is also possible to including: switch valve, for being provided for handing off the preferential valve of described walking Hydraulic oil.
Wherein, when the operation according to described operating portion is walked and turns round composite move, according to from institute The walking guider pressure stating operating portion discharge can switch described switch valve, spues from described operating portion Revolution guider pressure be supplied to the preferential valve of described walking.
Wherein, it is also possible to including: bypass valve, for controlling the hydraulic oil spued from described second pump, When carrying out described composite move, described switch valve is for providing revolution guider to described bypass valve Pressure.
Wherein, described bypass valve may be located at the dirtiest of described second pump, and connects described second Pump and fuel tank.
According to embodiments of the present invention, the composite move of engineering machinery controls device at walking and revolution composite moving When making, the first pump is only used for walking, the second pump is only used for revolution action, thus walking and revolution action are not Can mutually be affected and maximum stream flow (maximal rate) can be used.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is the engineering machinery according to an embodiment of the invention according to one embodiment of the invention Composite move controls the circuit diagram of device.
Fig. 3 and Fig. 4 be according to another embodiment of the present invention, possess and the walking pressure-gradient control valve shown in Fig. 1 The composite move of the engineering machinery of the preferential valve of walking of the structure that door is different controls the circuit diagram of device.
Description of reference numerals
10: operating portion 11: the first reversal valve
12: the first supply pipeline 13: the second reversal valves
14: the second supply pipelines 20: travelling control spool
30: rotary control valve core 40: preferential valve of walking
50: switch valve 51: the first confluxes pipeline
Conflux pipeline 60 at 52: the second: bypass valve
P1: the first pump the P2: the second pump
T: fuel tank
Detailed description of the invention
Hereinafter, the embodiment of the present invention is described in detail with reference to the accompanying drawings, so that those of ordinary skill in the art's energy Enough it is easily achieved.The present invention can implement in a variety of manners, however it is not limited to embodiment described herein.
It is hereby stated that, accompanying drawing is brief, is not necessarily made to scale chi and is shown.Notable for accompanying drawing Property and convenience, expand or reduce relative size and the ratio showing figure elements dimensionally, its In size be merely exemplary, the present invention is not limited to this.Further, in plural accompanying drawing Identical works, key element or the parts of display employ identical reference, to represent that it possesses phase As feature.
The embodiment of the present invention specifically presents the Utopian embodiment of the present invention.Its result, in the example shown It is contemplated that diversified deformation.Therefore embodiment is not limited to the specific modality of depicted area, example As included according to the metamorphosis manufactured.
Hereinafter, illustrate with reference to Fig. 1 and Fig. 4 that the composite move of the engineering machinery of one embodiment of the invention controls Device.
As shown in Fig. 1 and Fig. 4, the composite move of the engineering machinery of one embodiment of the invention controls device bag Include: the first pump P1, the second pump P2, travelling control spool 20, rotary control valve core 30 and walking are preferential Valve 40.
The composite move of engineering machinery controls device according to an embodiment of the invention, in order to walk and rocking arm Operation, and possess the first pump P1 and the second pump P2.
According to the operation of operating portion 10, the first pump P1 is to for the walking of engineering machinery and rocking arm operation Multiple actuators provide hydraulic oil.
Further, according to the operation of operating portion 10, the second pump P2 is to for the walking of engineering machinery and rocking arm Multiple actuators of operation provide hydraulic oil.
That is, the first pump P1 and the second pump P2 is suitably allocated to multiple actuator and is used.
Now, rocking arm operation refers to the swing arm rise/fall (Boom of engineering machinery of such as excavator Up/down), dipper is gathered (Arm crowd), and (Bucket crowd/dump) is gathered/abandoned to scraper bowl, And wave operations such as (Swing).
Travelling control spool 20 and rotary control valve core 30 are arranged on the first pump P1 and the second pump P2 even On the oil circuit connect.
Specifically, when carrying out walking motion according to operating portion 10, travelling control spool 20 connects First pump P1 and running motor 70.That is, travelling control spool 20 controls the liquid to running motor 70 supply The flowing of force feed.
When carrying out revolution action according to operating portion 10, rotary control valve core 30 is positioned at travel control valve Core 20 dirty, connects the first pump and rotary motor 80.That is, rotary control valve core 30 controls to revolution The flowing of the hydraulic oil of motor 80 supply.
When walking according to operating portion 10 and turn round composite move, preferential valve 40 of walking is permissible The hydraulic oil spued from the first pump P1 is only supplied to travelling control spool 20, and makes from the second pump The hydraulic oil that P2 spues is only supplied to rotary control valve core 30.
Now, preferential valve 40 of walking may be located at the most upper of the second pump P2.
The composite move control device of engineering machinery can also include switching valve according to an embodiment of the invention Door 50.
Specifically, switch valve 50 is provided for handing off walking the hydraulic oil of preferential valve 40.According to The guider pressure of input, switch valve 50 is switched to a direction, thus to preferential valve 40 of walking Hydraulic oil is provided.
Produce when operating operating portion 10 and input the guider pressure to switch valve 50.When according to operation Time walking and turn round composite move in portion 10, in operating portion 10 discharge walking guider pressure and revolution Guider pressure.
Now, from operating portion 10 spue revolution guider pressure by the first supply pipeline 12 supply to The lower end of switch valve 50；Walking guider pressure is supplied to switch valve by the second supply pipeline 14 The side of 50.
Only it is more than the pre-of switch valve 50 when the size of the walking guider pressure supplied to switch valve 50 If during pressure, switch valve 50 is switched to a direction.
First supply pipeline 12 can also include the first reversal valve 11 according to the preferred embodiment of the invention, the Two supply pipelines 14 can also include the second reversal valve 13.
The left revolution that first reversal valve 11 is transfused to the revolution action of with good grounds operating portion 10 and produces guides Device pressure and right-hand rotation guider pressure, at the left revolution guider pressure being transfused to and right-hand rotation guider Higher one of selection pressure in pressure, and the lower end supplied to switch valve 50.
The left lateral that second reversal valve 13 is transfused to the walking motion of with good grounds operating portion 10 and produces is walked to guide Device pressure and right lateral walk guider pressure, walk guider pressure and right lateral walks guider at the left lateral being transfused to Higher one of selection pressure in pressure, and the side supplied to switch valve 50.
When according to walking guider pressure, switch valve 50 is switched, then supply to switch valve 50 The revolution guider pressure feed of lower end conflux pipeline 52 to first pipeline 51 and second that confluxes.
Now, supply to the first revolution guider pressure confluxing pipeline 51 is provided for switching walking The pressure of preferential valve 40.
Supply to the second revolution guider pressure confluxing pipeline 52 is supplied to bypass valve 60.
Bypass valve 60 is positioned at the dirtiest of the second pump P2.Accordingly, the second pump P2 and fuel tank T is connected.
In engineering machinery according to an embodiment of the invention, only walk when not carrying out revolution action During action, the hydraulic oil spued from the second pump P2 is discharged to fuel tank T.
Now, when walking according to operating portion 10 and turn round composite move, then according to bypass valve 60 The guider pressure of supply, prevents the hydraulic oil spued from the second pump P2 from discharging to fuel tank T.
That is, according to revolution guider pressure switching bypass valve 60, such that it is able to control from the second pump P2 The flow discharged to fuel tank 60.
Now, the structure of preferential valve 40,41 of walking according to an embodiment of the invention can be formed as Shown in Fig. 1 and Fig. 2, or can be formed as shown in Figures 3 and 4.
That is, when walk preferential valve 40 be directed to device pressure switching time, oil circuit is set so that from walking excellent A part for the hydraulic oil that first valve 40 spues can be supplied to rotary control valve core 30；Arrange oil circuit with Make the valve mechanism that another part can be discharged to fuel tank 60.
Therefore, the structure of the preferential valve 40 of walking shown in Fig. 1 to Fig. 4, can be because implementing the general of the present invention Logical technical staff and different.
According to structure as above, the composite move of engineering machinery controls device
When walking and turning round composite move, the first pump P1 is only used for walking, the second pump P2 only uses In revolution action, thus walking and revolution action will not mutually be affected and can use maximum stream flow (maximal rate).
Although should be appreciated that above referring to the drawings the embodiment of the present invention is illustrated, but the present invention Person of an ordinary skill in the technical field is before without departing from technical purpose or change essential features Put, be practiced with other detailed description of the invention.
Therefore, the above embodiments are merely exemplary, are not limited to the present invention.The present invention's Protection domain should be determined by claim, and the meaning of claim and scope, and its equivalent All changes or the conversion form replaced and draw come under the present invention.

Claims (6)

1. the composite move of an engineering machinery controls device, it is characterised in that including:
First pump and the second pump, according to the operation of operating portion, make to walking and the revolution for engineering machinery Multiple actuators of industry provide hydraulic oil；
Travelling control spool, connects described first pump and running motor；
Rotary control valve core, is positioned at the dirty of described travelling control spool and connects described first pump and return Turn motor；And
Walk preferential valve, when walking and the revolution composite move of described engineering machinery, for from institute State the hydraulic oil supply extremely described travelling control spool that the first pump spues, for spuing from described second pump Hydraulic oil supply to described rotary control valve core.
The composite move of engineering machinery the most according to claim 1 controls device, it is characterised in that
The preferential valve of described walking is positioned at the most upper of described second pump.
The composite move of engineering machinery the most according to claim 1 controls device, it is characterised in that Also include:
Switch valve, for being provided for handing off the hydraulic oil of the preferential valve of described walking.
The composite move of engineering machinery the most according to claim 3 controls device, it is characterised in that
When the operation according to described operating portion is walked and turns round composite move, according to from described operation The walking guider pressure that portion spues switches described switch valve,
The revolution guider pressure spued from described operating portion is supplied to the preferential valve of described walking.
The composite move of engineering machinery the most according to claim 4 controls device, it is characterised in that Also include:
Bypass valve, for controlling the hydraulic oil spued from described second pump,
When carrying out described composite move, described switch valve is for providing revolution to lead to described bypass valve To device pressure.
The composite move of engineering machinery the most according to claim 5 controls device, it is characterised in that
Described bypass valve is positioned at the dirtiest of described second pump, and connects described second pump and fuel tank.
CN201480070227.1A 2013-12-26 2014-12-17 The composite move control device of engineering machinery Active CN105917052B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2013-0164663 2013-12-26
KR1020130164663A KR102083687B1 (en) 2013-12-26 2013-12-26 Combined operation controlling appratus of construction machine
PCT/KR2014/012439 WO2015099352A1 (en) 2013-12-26 2014-12-17 Apparatus for controlling combined-operation of construction machine

Publications (2)

Publication Number Publication Date
CN105917052A true CN105917052A (en) 2016-08-31
CN105917052B CN105917052B (en) 2018-11-30

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Application Number Title Priority Date Filing Date
CN201480070227.1A Active CN105917052B (en) 2013-12-26 2014-12-17 The composite move control device of engineering machinery

Country Status (4)

Country Link
EP (1) EP3093401B1 (en)
KR (1) KR102083687B1 (en)
CN (1) CN105917052B (en)
WO (1) WO2015099352A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110925253A (en) * 2019-12-19 2020-03-27 三一重机有限公司 Engineering machinery composite action control method and device

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KR20150076045A (en) 2015-07-06
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EP3093401B1 (en) 2019-09-25
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WO2015099352A1 (en) 2015-07-02
EP3093401A4 (en) 2017-09-13

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