CN102877501B - Hydraulic control system with functions of automatic control and fine operation, and excavator - Google Patents
Hydraulic control system with functions of automatic control and fine operation, and excavator Download PDFInfo
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- CN102877501B CN102877501B CN201210426161.8A CN201210426161A CN102877501B CN 102877501 B CN102877501 B CN 102877501B CN 201210426161 A CN201210426161 A CN 201210426161A CN 102877501 B CN102877501 B CN 102877501B
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- oil circuit
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Abstract
The invention discloses a hydraulic control system with the functions of automatic control and fine operation, and an excavator, and belongs to the field of hydraulic technique. The system includes a main valve core, a main valve electrical control end, a main valve pilot end, a main pump and a controller, wherein the main valve core is communicated with the main pump; the main pump is electrically connected with the controller; the pilot oil circuit of a main valve is formed between the main valve core and the main valve pilot end; a main valve electrical control end is connected with the main valve pilot oil circuit; a proportional electromagnetic reduction valve and a reversing valve are arranged on the pilot oil circuit; the proportional electromagnetic reduction valve is electrically connected with the controller; an output end of the proportional electromagnetic reduction valve is communicated with the main valve electrical control end; and both the main valve pilot end and the main valve electric control end are communicated with the reversing valve. According to the invention, as the proportional electromagnetic reduction valve and the reversing valve are additionally arranged on the pilot oil circuit of the main valve core, the controller controls the proportional electromagnetic reduction valve, and fine control, automatic walking and reciprocating oscillation of the system can be realized, so that the operating comfort is improved.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, particularly a kind of hydraulic control system and excavator with control and fine manipulation function automatically.
Background technology
Excavator, as a kind of engineering mechanical device, is that one has multivariant equipment.The automation function of excavator is fewer in the market, is generally manually to be operated by traditional.If specifically operated in particular circumstances, then need operator to possess rich experience and operant level, otherwise more serious consequence may be brought.Along with the raising that continuous progress and the labourer of science and technology require operation comfort operator, more and more need the functionalized and automatization level improving excavator.
Fine motion work (or fine work action) of current excavator completes the manipulation pilot valve needing operator small size and realizes, this can bring following problem: first at lifting and lifting weight, and need accurately to locate placement location, such as need inflammable, explosive, the frangible and band of lifting to be corrosive etc. the solid of harmful to human and liquid time, operator is now needed to operate absorbedly, the long easy generation of operating process is tired, and artificial operational motion is not very steadily with accurate, affects operating result; Secondly when carrying out soft terrain finishing operations, operator needs to adjust swing arm, dipper and dipper motion when digging machine is not walked simultaneously, and action is more, and sometimes needs the repetitive work carrying out machinery, easily tired.
Summary of the invention
Refinement can not be carried out in order to solve current excavator and function pacifically of automatically sweeping the floor cannot be realized, easily making operator produce tired problem, now providing a kind of hydraulic control system and the excavator with control and fine manipulation function automatically.Concrete technical scheme is as follows:
A kind of hydraulic control system with control and fine manipulation function automatically, comprise valve core of main valve, the automatically controlled end of main valve, main valve guide holds, main pump and controller, described valve core of main valve is communicated with described main pump, described main pump and the electrical connection of described controller, guide's oil circuit of main valve is formed between described valve core of main valve and described main valve guide end, the automatically controlled end of described main valve is communicated with described main valve guide oil circuit, wherein, described guide's oil circuit is provided with ratio electromagnetic relief pressure valve and reversal valve, described ratio electromagnetic relief pressure valve is electrically connected with the described controller that can be used for controlling its output pressure, the output of described ratio electromagnetic relief pressure valve is communicated with the automatically controlled end of described main valve, described main valve guide end is all connected with described reversal valve with the automatically controlled end of described main valve.
Preferably, described valve core of main valve comprises swing arm spool, rotary valve key, left lateral walks spool, right lateral walks spool and straight line moving spool; The automatically controlled end of described main valve comprises that swing arm falls that automatically controlled, swing arm rises that automatically controlled, left revolution is automatically controlled, right-hand rotation is automatically controlled, left lateral is walked-advanced automatically controlled, left lateral and walks-retreat automatically controlled, right lateral and walk-advance automatically controlled, right lateral and walk-retreat automatically controlled; Described main valve guide end comprises that swing arm falls, swing arm liter, left revolution, right-hand rotation, left lateral is walked-advanced, left lateral is walked-retreated, right lateral is walked-advanced, right lateral is walked-retreated and straight line moving switching; Described swing arm spool guide oil circuit, rotary valve key guide oil circuit, left lateral walk spool guide oil circuit, right lateral is walked on spool guide oil circuit and is provided with described ratio electromagnetic relief pressure valve and described reversal valve.
Preferably, described reversal valve is two position three way directional control valve.
Preferably, described ratio electromagnetic relief pressure valve and described reversal valve all have eight.
Preferably, while described straight line moving switching guide end passes into pilot pressure, controller cycle drives that left revolution is automatically controlled, right-hand rotation is automatically controlled, and controller synchronously drive left lateral walk-automatically controlled, right lateral walks-automatically controlled, the revolution of property performance period and walking composite move.
Preferably, described straight line moving switching guide holds the pilot pressure passed into be realized by automatically controlled or hydraulic control.
Preferably, described controller synchronously drives left lateral to walk-advance automatically controlled and right lateral and walks-advance the ratio electromagnetic relief pressure valve electricly connected, and can realize automatic advance.
A kind of excavator, described excavator is provided with having described in above-mentioned any one and automatically controls the hydraulic control system with fine manipulation function.
Compared with prior art, what technique scheme provided have controls to have the following advantages with the hydraulic control system of fine manipulation function and excavator automatically: by setting up ratio electromagnetic relief pressure valve and reversal valve on guide's oil circuit of valve core of main valve, controller comparative example electromagnetic relief pressure valve controls feasible system precise controlling and automatically walks and reciprocally swinging, improves the comfortableness of operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the electromagnetic valve group and pilot valves hydraulic schematic diagram that provide in the embodiment of the present invention;
Fig. 2 is the main valve and main pump hydraulic schematic diagram that provide in the embodiment of the present invention;
Fig. 3 is revolution after the action triggers of sweeping the floor provided in the embodiment of the present invention and walking pilot pressure oscillogram.
In accompanying drawing, the component list representated by each label is as follows:
2 ratio electromagnetic relief pressure valves, 3 swing arm spools, 4 rotary valve keys, 5 left lateral walk spool, 6 right laterals walk spool, 7 straight line moving spools, 8, controller, the governor motion of 9 main pumps, 10, main pump, 11 left revolutions are automatically controlled, 12 left revolutions, 21 right-hand rotations are automatically controlled, 22 right-hand rotations, 31 swing arms rise automatically controlled, 32 swing arm liters, 41 swing arms fall automatically controlled, 42 swing arms fall, 51 left lateral are walked-advance automatically controlled, 52 left lateral are walked-are advanced, 61 left lateral are walked-retreat automatically controlled, 62 left lateral are walked-are retreated, 71 right laterals are walked-advance automatically controlled, 72 right laterals are walked-are advanced, 81 right laterals are walked-retreat automatically controlled, 82 right laterals are walked-are retreated, 92, straight line moving switches, the automatically controlled pilot pressure of 12 left revolution, the automatically controlled pilot pressure of 13 right-hand rotation, walk-advance automatically controlled pilot pressure in left and right, T represents an action cycle.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As depicted in figs. 1 and 2, embodiments provide a kind of hydraulic control system with control and fine manipulation function automatically, comprise valve core of main valve, the automatically controlled end of main valve, main valve guide holds, ratio electromagnetic relief pressure valve, reversal valve, main pump 10 and controller 8, valve core of main valve is communicated with main pump 8, main pump 10 and controller 8 are electrically connected, guide's oil circuit of main valve is formed between valve core of main valve and main valve guide end, the automatically controlled end of main valve is communicated with main valve guide oil circuit, wherein, guide's oil circuit is provided with ratio electromagnetic relief pressure valve 2 and reversal valve, ratio electromagnetic relief pressure valve 2 is electrically connected with controller, controller 8 can be used for the output pressure of control ratio electromagnetic relief pressure valve 2, the output of ratio electromagnetic relief pressure valve 2 is communicated with the automatically controlled end of main valve, main valve guide end is all connected with reversal valve with the automatically controlled end of main valve.
Concrete, valve core of main valve comprises swing arm spool 3, rotary valve key 4, left lateral walks spool 5, right lateral walks spool 6 and straight line moving spool 7; The automatically controlled end of main valve comprises that swing arm falls that automatically controlled 41, swing arm rises that automatically controlled 31, left revolution is automatically controlled 11, right-hand rotation is automatically controlled 21, left lateral is walked-advanced automatically controlled 51, left lateral and walks-retreat automatically controlled 61, right lateral and walk-advance automatically controlled 71, right lateral and walk-retreat automatically controlled 81; Main valve guide end comprises that swing arm falls 42, swing arm rises 32, left revolution 12, right-hand rotation 22, left lateral walk-advance 52, left lateral walks-retreat 62, right lateral walks-advance 72, right lateral walk-retreat 82 and straight line moving switch 92; Swing arm spool guide oil circuit, rotary valve key guide oil circuit, left lateral walk spool guide oil circuit, right lateral is walked on spool guide oil circuit and is provided with ratio electromagnetic relief pressure valve 2 and reversal valve.Reversal valve is two position three way directional control valve.Ratio electromagnetic relief pressure valve 2 and reversal valve are provided with eight.
The course of work of the embodiment of the present invention is simply described below.
Be provided with multiple control instruction on the controller to control the operation of system for operator, include action command of sweeping the floor, fine motion left-hand rotation instruction, fine motion right-hand rotation instruction, fine motion lifting instruction, fine motion decline instruction, low-speed forward instruction, ease astern instruction and automatic advancement commands.
Guide's oil circuit of left (right side) revolution 12 increases ratio electromagnetic relief pressure valve, the controlled device 8 of its output pressure controls, output is held with " left (right side) turns round automatically controlled 11 " on main valve and is connected, " left (right side) turns round automatically controlled 11 " is all communicated with a two-bit triplet reversal valve with " left (right side) turns round 12 ", when not starting automatically controlled pattern, operator is directly controlled rotary valve key 4 realized normal operations by pilot handle " left (right side) revolution " 12 guide, when starting automatically controlled pattern, operator needs to trigger " a fine motion left side (right side) turns instruction ", controller 8 is by the solenoid-operated proportional reducing valve 2 output pressure instruction on this guide's oil circuit, governor motion 9 to main pump sends flow instruction, realize automatic fine motion turning function.
Guide's oil circuit that left (right side) walks increases ratio electromagnetic relief pressure valve 2, the controlled device 8 of its output pressure controls, output is held with " left (right side) walk-advance (retrogressing) automatically controlled 51 " on main valve and is connected, " left (right side) walking-advance (retrogressing) is automatically controlled " 51 is all communicated with a two-bit triplet reversal valve with " left (right side) is walked-advanced (retrogressing) " 52, when not starting automatically controlled pattern, operator directly controls walking spool 5 by guide's foot valve " left (right side) walking-advance (retrogressing) " 52 guides and realizes normal operations, when starting automatically controlled pattern, operator needs to trigger " low-speed forward (retrogressing) instruction ", controller 8 is by the solenoid-operated proportional reducing valve 2 output pressure instruction on this guide's oil circuit, governor motion 9 to main pump sends flow instruction, realize automatic low-speed forward (retrogressing) function.
Guide's oil circuit of swing arm liter (falling) increases ratio electromagnetic relief pressure valve, its output pressure is controlled by the controller, output is held with " swing arm liter (falling) is automatically controlled " on main valve and is connected, " swing arm liter (falling) is automatically controlled " is all communicated with a two-bit triplet reversal valve with " swing arm liter (falling) 32 ", when not starting automatically controlled pattern, operator is directly controlled swing arm spool 3 realized normal operations by pilot handle " swing arm liter (falling) " 32 guide, when starting automatically controlled pattern, operator needs to trigger " fine motion lifting (decline) instruction ", controller 8 is by the solenoid-operated proportional reducing valve 2 output pressure instruction on this guide's oil circuit, governor motion 9 to main pump sends flow instruction, realize automatic fine motion lifting (decline) function.
When operator triggers " action command of sweeping the floor ", " straight line moving switching " 92 guides hold and enter straight line moving pattern by passing into pilot pressure, controller 8 will periodically drive " left revolution is automatically controlled " 11, " right-hand rotation is automatically controlled " 21 synchronously drive " left lateral is walked-advance automatically controlled " 51 and " right lateral is walked-advance automatically controlled " 71.Be illustrated in figure 3 the pilot pressure oscillogram of revolution and walking.Now the motion state of excavator is: straight line moving at a slow speed, and pivoting support top structure reciprocating swing composite move.Wherein, straight line moving switching guide holds the pilot pressure passed into be realized by automatically controlled or hydraulic control.
When operator triggers " automatic advancement commands ", controller 8 synchronously drives " left lateral is walked to advance automatically controlled " 51 and " right lateral is walked to advance automatically controlled " 71 ratio electromagnetic relief pressure valve 2, open the left and right walking spool on main valve, send flow instruction with Time Controller 8 to main pump adjuster, realize the automatic advance of automatic excavator.
In addition, the ratio electromagnetic relief pressure valve quantity that this hydraulic system can increase according to actual needs or reduce on valve core of main valve pilot control loop reaches requirement.This hydraulic system can adopt solenoid-operated proportional reducing valve completely and not need pilot valve to control valve core of main valve, realizes multiple automatic control after setting up automatic function button.
A kind of excavator, this excavator is provided with above-mentioned having and automatically controls the hydraulic control system with fine manipulation function.The other parts of excavator with reference to prior art, can not repeat at you at this.
Have disclosed in the embodiment of the present invention and automatically to control to the hydraulic control system of fine manipulation function and excavator turning round, guide's oil circuit of swing arm and walking increases the corresponding command switch of solenoid-operated proportional reducing valve, reversal valve and increase, various Automated condtrol can be realized; The automatic low speed that wherein swing arm promotes and decline fine motion instruction can carry out weight when excavator carries out lifting operation steadily lifts, and reduces the requirement to operator's technical ability; Walking and pivotal automatic control can realize level land function of automatically sweeping the floor, and be operated in certain angular range, the different speeds of travel and speed of gyration can realize different patterns of sweeping the floor.Automatically walking function can allow operator not handle pedal pilot valve in long distance travel process in addition, reduces labour intensity.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. one kind has the hydraulic control system of control and fine manipulation function automatically, comprise valve core of main valve, the automatically controlled end of main valve, main valve guide holds, main pump and controller, described valve core of main valve is communicated with described main pump, described main pump and the electrical connection of described controller, guide's oil circuit of main valve is formed between described valve core of main valve and described main valve guide end, the automatically controlled end of described main valve is communicated with described main valve guide oil circuit, it is characterized in that, described guide's oil circuit is provided with ratio electromagnetic relief pressure valve and reversal valve, described ratio electromagnetic relief pressure valve is electrically connected with the described controller that can be used for controlling its output pressure, the output of described ratio electromagnetic relief pressure valve is communicated with the automatically controlled end of described main valve, described main valve guide end is all connected with described reversal valve with the automatically controlled end of described main valve.
2. the hydraulic control system with control and fine manipulation function automatically according to claim 1, it is characterized in that, described valve core of main valve comprises swing arm spool, rotary valve key, left lateral walks spool, right lateral walks spool and straight line moving spool; The automatically controlled end of described main valve comprises that swing arm falls that automatically controlled, swing arm rises that automatically controlled, left revolution is automatically controlled, right-hand rotation is automatically controlled, left lateral is walked-advanced automatically controlled, left lateral and walks-retreat automatically controlled, right lateral and walk-advance automatically controlled, right lateral and walk-retreat automatically controlled; Described main valve guide end comprises that swing arm falls, swing arm liter, left revolution, right-hand rotation, left lateral is walked-advanced, left lateral is walked-retreated, right lateral is walked-advanced, right lateral is walked-retreated and straight line moving switching; Described swing arm spool guide oil circuit, rotary valve key guide oil circuit, left lateral walk spool guide oil circuit, right lateral is walked on spool guide oil circuit and is provided with described ratio electromagnetic relief pressure valve and described reversal valve.
3. the hydraulic control system with control and fine manipulation function automatically according to claim 1 and 2, it is characterized in that, described reversal valve is two position three way directional control valve.
4. the hydraulic control system with control and fine manipulation function automatically according to claim 2, it is characterized in that, described ratio electromagnetic relief pressure valve and described reversal valve all have eight.
5. the hydraulic control system with control and fine manipulation function automatically according to claim 2, it is characterized in that, while described straight line moving switching guide end passes into pilot pressure, controller cycle drives that left revolution is automatically controlled, right-hand rotation is automatically controlled, and controller synchronously drive left lateral walk-automatically controlled, right lateral walks-automatically controlled, the revolution of property performance period and walking composite move.
6. according to claim 5 have control automatically and the hydraulic control system of fine manipulation function, it is characterized in that, described straight line moving is switched guide and holds the pilot pressure passed into be realized by automatically controlled or hydraulic control.
7. the hydraulic control system with control and fine manipulation function automatically according to claim 2, it is characterized in that, described controller synchronously drives left lateral to walk-advance automatically controlled and right lateral and walks-advance the ratio electromagnetic relief pressure valve electricly connected, and can realize automatic advance.
8. an excavator, is characterized in that, described excavator is provided with having described in any one of claim 1 to 7 and automatically controls the hydraulic control system with fine manipulation function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210426161.8A CN102877501B (en) | 2012-10-31 | 2012-10-31 | Hydraulic control system with functions of automatic control and fine operation, and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210426161.8A CN102877501B (en) | 2012-10-31 | 2012-10-31 | Hydraulic control system with functions of automatic control and fine operation, and excavator |
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| Publication Number | Publication Date |
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| CN102877501A CN102877501A (en) | 2013-01-16 |
| CN102877501B true CN102877501B (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210426161.8A Expired - Fee Related CN102877501B (en) | 2012-10-31 | 2012-10-31 | Hydraulic control system with functions of automatic control and fine operation, and excavator |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677582B (en) * | 2015-02-11 | 2017-10-03 | 青岛雷沃工程机械有限公司 | A kind of walking method for testing vibration of excavator |
| WO2019112059A1 (en) * | 2017-12-07 | 2019-06-13 | 住友建機株式会社 | Excavator |
| CN111576513B (en) * | 2020-05-25 | 2022-08-12 | 江苏徐工工程机械研究院有限公司 | Land leveler flow control system, method, controller and land leveler |
| CN111663600B (en) * | 2020-06-08 | 2022-11-11 | 雷沃工程机械集团有限公司 | Automatic cruising method and system for excavator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08199632A (en) * | 1995-01-20 | 1996-08-06 | Hitachi Constr Mach Co Ltd | Oil hydraulic circuit for hydraulic shovel |
| JPH11148147A (en) * | 1997-11-14 | 1999-06-02 | Hitachi Constr Mach Co Ltd | Hydraulic driving device for construction machine |
| CN102605812A (en) * | 2012-03-22 | 2012-07-25 | 三一重机有限公司 | Excavator linear movement control device and excavator linear movement control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101112133B1 (en) * | 2009-06-16 | 2012-02-22 | 볼보 컨스트럭션 이큅먼트 에이비 | hydraulic system of construction equipment having float function |
-
2012
- 2012-10-31 CN CN201210426161.8A patent/CN102877501B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08199632A (en) * | 1995-01-20 | 1996-08-06 | Hitachi Constr Mach Co Ltd | Oil hydraulic circuit for hydraulic shovel |
| JPH11148147A (en) * | 1997-11-14 | 1999-06-02 | Hitachi Constr Mach Co Ltd | Hydraulic driving device for construction machine |
| CN102605812A (en) * | 2012-03-22 | 2012-07-25 | 三一重机有限公司 | Excavator linear movement control device and excavator linear movement control method |
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| CN102877501A (en) | 2013-01-16 |
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