CN105917052B - The composite move control device of engineering machinery - Google Patents

The composite move control device of engineering machinery Download PDF

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Publication number
CN105917052B
CN105917052B CN201480070227.1A CN201480070227A CN105917052B CN 105917052 B CN105917052 B CN 105917052B CN 201480070227 A CN201480070227 A CN 201480070227A CN 105917052 B CN105917052 B CN 105917052B
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CN
China
Prior art keywords
pump
walking
valve
engineering machinery
composite move
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Active
Application number
CN201480070227.1A
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Chinese (zh)
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CN105917052A (en
Inventor
吕明九
郭弘燮
孔羲锡
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HD Hyundai Infracore Co Ltd
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Doosan Infracore Co Ltd
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Publication of CN105917052A publication Critical patent/CN105917052A/en
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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
    • 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
    • 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

The present embodiments relate to the composite move control devices of engineering machinery comprising：First pump and the second pump provide hydraulic oil to the walking for engineering machinery and the multiple actuators for turning round operation according to the operation of operation portion；Running motor is selectively connected to first pump by travelling control spool；Rotary control valve core positioned at the dirty of the travelling control spool and is connected to first pump and rotary motor；And the preferential valve of walking, when the walking of the engineering machinery and revolution composite move, for the hydraulic oil to spue from first pump to be only supplied to the travelling control spool, for the hydraulic oil to spue from second pump to be supplied to the rotary control valve core.

Description

The composite move control device of engineering machinery
Technical field
The present embodiments relate to engineering machinery more particularly to engineering machinery in the composite move walked and turned round It can maintain the composite move control device of the engineering machinery of turnability.
Background technique
In general, the engineering machinery of such as excavator includes：Engine；Hydraulic pump is generated hydraulic using the power of engine； Control unit, controlled by hydraulic valve generate in hydraulic pump it is hydraulic；Actuator works according to hydraulic.
Particularly, engineering machinery by control flow and it is hydraulic drive swing arm (boom), dipper (arm), scraper bowl (bucket) etc. specifically to be worked, need to control the flow for being applied to actuator and hydraulic at this time.
This engineering machinery has at least two main pump, these main pumps hydraulic oil be suitably allocated to walking or The operation of person's rocker arm and give using.
Wherein, rocker arm operation refers to the swing arm rise/fall (Boom up/down) of the engineering machinery of such as excavator, bucket Bar is gathered (Arm crowd), and (Bucket crowd/dump) is gathered/abandoned to scraper bowl, and waves operations such as (Swing).
In the hydraulic system of existing engineering machinery, when review movement is walked and turned round to engineering machinery, from one A main pump discharge hydraulic oil distribution give for walking running motor and for revolution rotary motor and give using.
But this hydraulic system is shared with the flow to spue from a main pump in the case where having two main pumps Running motor and rotary motor.
Therefore, compared with rotary motor, more flows are supplied to running motor, to have the faster speed of travel Reverse side, there are rotational speeds by slowly defect.
Summary of the invention
The embodiment of the invention provides a kind of composite move control devices of engineering machinery, thus in the walking of engineering machinery And when revolution composite move, so that rotational speed is identical as speed when individually carrying out revolution movement.
According to embodiments of the present invention, the composite move control device of engineering machinery, including：First pump and the second pump, according to The operation of operation portion provides hydraulic oil to the walking for engineering machinery and the multiple actuators for turning round operation；Travel control valve Running motor is selectively connected to first pump by core；Rotary control valve core, positioned at flowing down for the travelling control spool And it is connected to first pump and rotary motor；And the preferential valve of walking, when the walking and revolution of the engineering machinery are compound When movement, for the hydraulic oil to spue from first pump to be only supplied to the travelling control spool, for from described the The hydraulic oil that two pumps spue is supplied to the rotary control valve core.
Wherein, the preferential valve of walking can be located at the most upper of second pump.
Wherein, can also include：Switch valve, for being provided for handing off the hydraulic oil of the preferential valve of walking.
Wherein, when being walked according to the operation of the operation portion and turning round composite move, according to from the operation portion The walking guider pressure of discharge can switch the switch valve, and the revolution guider pressure to spue from the operation portion is supplied To the extremely described preferential valve of walking.
Wherein, can also include：Bypass valve, for controlling the hydraulic oil to spue from second pump, described in progress When composite move, the switch valve is used to provide revolution guider pressure to the bypass valve.
Wherein, the bypass valve can be located at the most dirty of second pump, and be connected to second pump and fuel tank.
According to embodiments of the present invention, the composite move control device of engineering machinery is when walking and turning round composite move, and the One pump is only used for walking, the second pump is acted for revolution, so that walking and revolution movement will not mutually be affected and can be with It uses maximum stream flow (maximum speed).
Detailed description of the invention
Fig. 1 and Fig. 2 is the composite move according to the engineering machinery according to an embodiment of the invention of one embodiment of the invention The circuit diagram of control device.
Fig. 3 and Fig. 4 be it is according to another embodiment of the present invention, have the knot different from the preferential valve of walking shown in FIG. 1 The circuit diagram of the composite move control device of the engineering machinery of the preferential valve of walking of structure.
Description of symbols
10：Operation portion 11：First reversal valve
12：First supply pipeline 13：Second reversal valve
14：Second supply pipeline 20：Travelling control spool
30：Rotary control valve core 40：It walks preferential valve
50：Switch valve 51：First confluence pipeline
52：Second confluence pipeline 60：Bypass valve
P1：First pump P2：Second pump
T：Fuel tank
Specific embodiment
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 can be easily It realizes.The present invention can be implemented in a variety of manners, however it is not limited to embodiment described herein.
It is hereby stated that attached drawing be it is brief, be not necessarily made to scale ruler and shown.For the conspicuousness and convenience of attached drawing Property, dimensionally expand or diminution shows that the relative size and ratio of figure elements, size therein are only exemplary , the present invention is not limited thereto.Also, identical works, element or the component shown in more than two attached drawings uses Identical appended drawing reference, to indicate that it has similar feature.
The embodiment of the present invention specifically shows Utopian embodiment of the invention.As a result, in the example shown it is contemplated that Diversified deformation.Therefore embodiment is not limited to the specific modality of depicted area, such as can also include according to manufacture Metamorphosis.
Hereinafter, illustrating the composite move control device of the engineering machinery of one embodiment of the invention with reference to Fig. 1 and Fig. 4.
As shown in Fig. 1 and Fig. 4, the composite move control device of the engineering machinery of one embodiment of the invention includes：First pump P1, the second pump P2, travelling control spool 20, rotary control valve core 30 and the preferential valve 40 of walking.
The composite move control device of engineering machinery according to an embodiment of the invention, in order to walk and rocker arm operation, and Has the pump of the first pump P1 and second P2.
According to the operation of operation portion 10, the first pump multiple actuators of the P1 to walking and rocker arm operation for engineering machinery Hydraulic oil is provided.
Also, according to the operation of operation portion 10, the second pump P2 provides hydraulic oil to multiple actuators for rocker arm operation.
That is, first pump P1 and second pump P2 be suitably allocated to multiple actuators and give using.
At this point, rocker arm operation refers to the swing arm rise/fall (Boom up/down) of the engineering machinery of such as excavator, bucket Bar is gathered (Arm crowd), and (Bucket crowd/dump) is gathered/abandoned to scraper bowl, and waves operations such as (Swing).
Travelling control spool 20 and rotary control valve core 30 are arranged on the oil circuit connecting with the first pump P1 and the second pump P2.
Specifically, when carrying out walking motion according to operation portion 10, first pump P1 of the connection of travelling control spool 20 and Running motor 70.That is, travelling control spool 20 controls the flowing of the hydraulic oil supplied to running motor 70.
When carrying out revolution movement according to operation portion 10, rotary control valve core 30 is located under travelling control spool 20 Stream, the first pump of connection and rotary motor 80.That is, rotary control valve core 30 controls the stream of the hydraulic oil supplied to rotary motor 80 It is dynamic.
When being walked according to operation portion 10 and turning round composite move, preferential valve 40 of walking can make from first Pump P1 spue hydraulic oil be only supplied to travelling control spool 20, and make from second pump P2 spue hydraulic oil supply to return Turn control valve core 30.
At this point, preferential valve 40 of walking can be located at the most upper of the second pump P2.
The composite move control device of engineering machinery according to an embodiment of the invention can also include switch valve 50.
Specifically, switch valve 50 is provided for handing off the hydraulic oil for preferential valve 40 of walking.According to the guiding of input Device pressure, switch valve 50 are switched to a direction, to provide hydraulic oil to preferential valve 40 of walking.
The guider pressure for being input to switch valve 50 is generated when operating operation portion 10.It is gone when according to operation portion 10 When walking and turning round composite move, in the discharge of operation portion 10 walking guider pressure and revolution guider pressure.
At this point, the revolution guider pressure to spue from operation portion 10 is supplied by the first supply pipeline 12 to switch valve 50 Lower end；Guider pressure of walking is supplied by the second supply pipeline 14 to the side of switch valve 50.
Only when the size of the walking guider pressure supplied to switch valve 50 is greater than the preset pressure of switch valve 50, Switch valve 50 is switched to a direction.
First supply pipeline 12 according to the preferred embodiment of the invention can also include the first reversal valve 11, the second supply pipe Line 14 can also include the second reversal valve 13.
First reversal valve 11 be entered with good grounds operation portion 10 revolution movement and generate left revolution guider pressure and Right-hand rotation guider pressure selects pressure higher in the left revolution guider pressure and right-hand rotation guider pressure being entered One, and supply to the lower end of switch valve 50.
Second reversal valve 13 be entered the walking motion of with good grounds operation portion 10 and the left lateral that generates walk guider pressure and Right lateral walks guider pressure, walks guider pressure in the left lateral being entered and right lateral is walked in guider pressure and selects pressure higher One, and supply to the side of switch valve 50.
When according to walking guider pressure and switch valve 50 is switched, then supply to the lower end of switch valve 50 return Turn guider pressure to supply to the first confluence pipeline 51 and the second confluence pipeline 52.
At this point, the revolution guider pressure of supply to the second confluence pipeline 52 is provided for switching walking pressure-gradient control valve door 40 pressure.
It supplies to the revolution guider pressure of the first confluence pipeline 51 and is supplied to bypass valve 60.
Bypass valve 60 is located at the most dirty of the second pump P2.Accordingly, the second pump of connection P2 and fuel tank T.
In engineering machinery according to an embodiment of the invention, when being acted without revolution and only carry out walking motion, The hydraulic oil to spue from the second pump P2 is discharged to fuel tank T.
At this point, then being led according to what is supplied to bypass valve 60 when being walked and being turned round composite move according to operation portion 10 To device pressure, the hydraulic oil to spue from the second pump P2 is prevented to be discharged to fuel tank T.
That is, switching bypass valve 60 according to revolution guider pressure, P2 is pumped to 60 row of fuel tank so as to control from second Flow out.
At this point, the structure of the preferential valve 40,41 of walking according to an embodiment of the invention can be formed as such as Fig. 1 and Fig. 2 It is shown, or can be formed as shown in Figures 3 and 4.
That is, setting oil circuit is so that from preferential valve 40 of walking when preferential valve 40 of walking is switched by guider pressure The a part of of the hydraulic oil of discharge can be supplied to rotary control valve core 30；Oil circuit is set so that another part can be to oil The valve mechanism that case 60 is discharged.
Therefore, the structure of the preferential valve 40 of walking shown in Fig. 1 to Fig. 4, can be because implementing those of ordinary skill of the invention And it is different.
According to structure as above, the composite move control device of engineering machinery when being walked and turning round composite move, First pump P1 is only used for walking, the second pump P2 is acted for revolution, so that walking and revolution movement will not mutually be affected simultaneously And maximum stream flow (maximum speed) can be used.
It should be appreciated that although the embodiment of the present invention is illustrated referring to attached drawing above, technology belonging to the present invention The those of ordinary skill in field is not under the premise of departing from technical purpose or change essential features, with other specific real The mode of applying is practiced.
Therefore, the above embodiments are only exemplary, and are not intended to restrict the invention.Protection scope of the present invention is answered Determined when by claim, and the meaning and range of claim, and its equivalent replacement and having altered of obtaining or Person converts form and comes under the present invention.

Claims (6)

1. a kind of composite move control device of engineering machinery, which is characterized in that including：
First pump and the second pump, according to the operation of operation portion, to multiple actuatings of walking and revolution operation for engineering machinery Device provides hydraulic oil；
Running motor is selectively connected to first pump by travelling control spool；
Rotary control valve core positioned at the dirty of the travelling control spool and is connected to first pump and rotary motor；And
Preferential valve of walking spues for from first pump when the walking of the engineering machinery and revolution composite move Hydraulic oil be only supplied to the travelling control spool, for from it is described second pump spue hydraulic oil supply to the revolution Control valve core.
2. the composite move control device of engineering machinery according to claim 1, which is characterized in that
The preferential valve of walking is located at the most upper of second pump.
3. the composite move control device of engineering machinery according to claim 1, which is characterized in that further include：
Switch valve, for being provided for handing off the hydraulic oil of the preferential valve of walking.
4. the composite move control device of engineering machinery according to claim 3, which is characterized in that
When being walked according to the operation of the operation portion and turning round composite move, the switch valve is by from the operation portion The walking guider pressure of discharge switches, and it is preferential that the revolution guider pressure to spue from the operation portion is supplied to the walking Valve switches the preferential valve of the walking,
The switch valve is only switched when the walking guider pressure is greater than preset pressure.
5. the composite move control device of engineering machinery according to claim 4, which is characterized in that further include：
Bypass valve, for controlling the hydraulic oil to spue from second pump,
When carrying out the composite move, the switch valve is used to provide revolution guider pressure to the bypass valve.
6. the composite move control device of engineering machinery according to claim 5, which is characterized in that
The bypass valve is located at the most dirty of second pump, and is connected to 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 CN105917052A (en) 2016-08-31
CN105917052B true CN105917052B (en) 2018-11-30

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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110925253B (en) * 2019-12-19 2021-11-09 三一重机有限公司 Engineering machinery composite action control method and device

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CN105917052A (en) 2016-08-31
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WO2015099352A1 (en) 2015-07-02
EP3093401A4 (en) 2017-09-13

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