CN105297822B - A kind of excavator multifunctional tool hydraulic booster system - Google Patents
A kind of excavator multifunctional tool hydraulic booster system Download PDFInfo
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- CN105297822B CN105297822B CN201510747249.3A CN201510747249A CN105297822B CN 105297822 B CN105297822 B CN 105297822B CN 201510747249 A CN201510747249 A CN 201510747249A CN 105297822 B CN105297822 B CN 105297822B
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- control valve
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- directional control
- hydraulic fluid
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- 239000012530 fluid Substances 0.000 claims abstract description 56
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 43
- 210000003813 thumb Anatomy 0.000 claims description 13
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims description 2
- 230000006837 decompression Effects 0.000 claims 1
- 238000010297 mechanical methods and process Methods 0.000 abstract 1
- 230000005226 mechanical processes and functions Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of excavator multifunctional tool hydraulic booster system, including main control valve, solenoid-operated proportional reducer unit, solenoid directional control valve, foot valve, pilot operated directional control valve, shuttle valve, electric switch, pressure switch, electric switch group, hydraulic oil container and filter.The present invention is on the basis of unidirectional special equipment hydraulic system, by increasing pilot operated directional control valve, solenoid directional control valve, pressure switch, electric switch group, shuttle valve and solenoid-operated proportional reducer unit, to reach the system while meeting the special implement system with one-way function and two-way function.Only special equipment need to be changed in actual use, you can realized in the case where not increasing fluid pressure line, realized a variety of functions of excavator.The present invention not only in actual mechanical process it is simple and reliable, reduce cost, it is and significant to the exploitation of excavator multifunctional tool.
Description
Technical field
The present invention relates to a kind of excavator multifunctional tool hydraulic booster system, a variety of special machines are particularly provided simultaneously with
Have the hydraulic system of function, belong to excavator technical field.
Background technology
On current hydraulic excavator market, particularly American-European high-end market, excavator is more and more used for various operating modes
Condition, this is accomplished by traditional excavator installing special equipment, and existing special equipment hydraulic system can only often be realized
Single function, it is impossible to make multiple special equipments share a main valve hydraulic fluid port and pipeline, and to realize excavator has multiple spies
Different equipment function, it is necessary to an external reversal valve, this is due to that existing main-control valve of excavating machine only reserves a standby valve element, and
And different equipments often can all have each independent fluid pressure line, thus occur that pipeline complexity, difficult arrangement, cost increase
Plus the problems such as；And due to the limitation in excavator pipeline space, existing multifunctional tool system can only often realize two kinds not
Same special equipment function, it is impossible to the purpose of a variety of functions is realized on an excavator.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of excavator multifunctional tool hydraulic pressure auxiliary system
System, on the basis of unidirectional special implement system, by increasing pilot operated directional control valve, solenoid directional control valve, pressure switch, electric switch
Group, shuttle valve and solenoid-operated proportional reducer unit, to reach the hydraulic system while having the purpose of a variety of special equipment functions.
To achieve these goals, the technical scheme is that：
A kind of excavator multifunctional tool hydraulic booster system, it is characterised in that including main control valve（2）, solenoid-operated proportional subtracts
Pressure valve group（3）, shuttle valve（4）, pilot operated directional control valve（5）, solenoid directional control valve（6）, filter（7）, pressure switch（8）, hydraulic oil container
（9）, foot valve（10）With electric switch group（11）；
When the unidirectional special equipment of driving（12）When, foot valve（10）Through pressure switch（8）To solenoid directional control valve（6）B ends
Electric signal is sent, solenoid directional control valve is controlled（6）Commutation, makes solenoid directional control valve（6）The first hydraulic fluid port can be connected with the 5th hydraulic fluid port,
Three hydraulic fluid ports can be connected with the 4th hydraulic fluid port, the pressure signal transmission of guide's oil circuit to main control valve（2）, control main control valve（2）Valve element is changed
To making from hydraulic oil container（9）The unidirectional special equipment of working connection hydraulic oil flow direction of extraction（12）Actuator port；Now, hydraulic control
Reversal valve（5）There is no the pressure signal of guide's oil circuit, under the action of the spring pilot operated directional control valve（5）A hydraulic fluid ports and C hydraulic fluid ports
Connection, unidirectional special equipment（12）Oil return after A hydraulic fluid ports, C hydraulic fluid ports by filter（7）Return to hydraulic oil container（9）；This
When electric switch PB be in open mode, solenoid directional control valve（6）A ends can not obtain electric, cut off the elder generation of the two-way special equipment of control
Oil Guide road, it is to avoid because of maloperation electric switch group（11）Variable resistance switch, when causing the non-normal working of quartering hammer
Action.Briefly, electric switch PB presence, plays the purpose of protection hydraulic system.
When the two-way special equipment of driving（13）When, press electric switch group（11）Button PB, relay K0 changes to electromagnetism
To valve（6）A ends send electric signal, control solenoid directional control valve（6）Commutation, makes solenoid directional control valve（6）The first hydraulic fluid port can be with
Five hydraulic fluid ports are connected, and the second hydraulic fluid port can be connected with the 4th hydraulic fluid port；Now because electric switch is not with adjusting Ohmic contact, solenoid-operated proportional
Reducer unit（3）Electric signal, the two-way special equipment of cutting-off controlling can not be obtained（13）Guide's oil circuit.Then, by electrically opening
Pass group（11）Adjustable electric signal, solenoid-operated proportional reducer unit are sent to master controller（3）According to the master controller hair received
The adjustable electric signal gone out, connects guide's oil circuit, and the pressure signal of guide's oil circuit passes through shuttle valve（4）It is sent to pilot operated directional control valve
（5）, make pilot operated directional control valve（5）A hydraulic fluid ports and the connection of B hydraulic fluid ports, control the switching of working connection；Meanwhile, the pressure of guide's oil circuit
Signal is delivered to main control valve（2）, control main control valve（2）Valve element produces different commutations, according to main control valve（2）The commutation of valve element makes
Working connection hydraulic oil flows to two-way special equipment（13）Different oil suction chambers, realize two-way special equipment（13）Different actions.
If now during control thumb pincers, no matter which obtains electric by magnetic valve A1 and A2, and guide's hydraulic oil can all pass through shuttle valve（4）To hydraulic control
Reversal valve（5）One end transmission pilot pressure signal, pilot operated directional control valve（5）Commutation so that thumb clamps the small chamber of oil cylinder and main control valve
Hydraulic fluid port is connected.Now, no matter which chamber oil-feed of thumb pincers oil cylinder, another chamber hydraulic oil all can return to hydraulic oil container by main control valve.
Electric switch group（11）Include adjusting resistance, when slip electric switch group（11）In regulation resistance when, pass through
Master controller is to solenoid-operated proportional reducer unit（3）Send adjustable electric signal.
Electric switch group（11）Include in two regulation branch roads of parallel connection, each branch road comprising a regulation resistance, adjust
Economize on electricity resistance passes through electric wiring by solenoid-operated proportional reducer unit（3）It is connected with master controller.
During slidable adjustment resistance to diverse location, by master controller to solenoid-operated proportional reducer unit（3）Send corresponding
Electric signal, makes proportional pressure-reducing valve group（3）Valve element produce corresponding displacement, guide oil is formed corresponding pilot pressure signal,
Corresponding pilot pressure signal is through shuttle valve（4）, pilot operated directional control valve（5）Control corresponding main control valve（2）Valve element produces different open
Displacement is spent, so that the different two-way special equipment of flux and flow direction of correspondence, adjusts the operating rate of two-way special equipment.
Unidirectional special equipment（12）For quartering hammer or open band machine.
Two-way special equipment（13）For thumb pincers, hydraulic shear or grab pipe machine.
Working connection hydraulic oil is by main pump（1）From hydraulic oil container（9）Extract out.
Compared with prior art, not only pipeline arrangement is simple, easy for installation, reduce cost by the present invention, passes through hydraulic pressure skill
Art is combined with Electrical Control Technology, and realizing excavator has the purpose of multiple functions.
Brief description of the drawings
Fig. 1 is that the present invention installs quartering hammer equipment（Unidirectional special equipment）When hydraulic system principle figure；
When Fig. 2 is that the present invention installs thumb pincers equipment（Two-way special equipment）Hydraulic system principle figure.
Embodiment
The present invention is exemplified by installing quartering hammer and thumb pincers equipment, and the invention will be further described below in conjunction with the accompanying drawings.
This kind of excavator multifunctional tool hydraulic booster system, by main pump 1, main control valve 2, solenoid-operated proportional reducer unit 3, shuttle
Valve 4, pilot operated directional control valve 5, solenoid directional control valve 6, filter 7, pressure switch 8, hydraulic oil container 9, foot valve 10, electric switch group
11st, unidirectional special equipment 12 and two-way special equipment 13 and its corresponding pipeline composition, realize a variety of special equipment systems of excavation
System shares a main valve hydraulic fluid port and pipeline simultaneously.When equipment is replaced by unidirectional special equipment, foot valve 10, pressure switch are controlled
8 open and send electric signal to the b ends of solenoid directional control valve 6, and solenoid directional control valve 6 commutates, now the 1st hydraulic fluid port and the 5th hydraulic fluid port, the 3rd
Hydraulic fluid port and the connection of the 4th hydraulic fluid port, realize the work of unidirectional special equipment.When equipment is replaced by two-way special equipment, electricity is pressed
The button PB of air cock group 11, relay K0 send electric signal to solenoid directional control valve 6a ends, and solenoid directional control valve 6 commutates, and now
1 hydraulic fluid port and the 5th hydraulic fluid port, the 2nd hydraulic fluid port and the connection of the 4th hydraulic fluid port, when sliding electric switch group 11R1 or R2, solenoid-operated proportional pressure-reducing valve
When group A1 or A2 receives different electric signals, guide's oil circuit will be connected, the pressure signal of guide's oil circuit passes through shuttle valve 4
Control pilot operated directional control valve 5 commutates, and now the hydraulic fluid port of pilot operated directional control valve 5 the 1st and the connection of the 2nd hydraulic fluid port, control the switching of working connection, real
The work of two-way special equipment is showed.
The speed control of the two-way special implement system of the present invention is ratio, controls the action process of two-way special equipment 13
In, when sliding electric switch group 11R1 or R2 to diverse location, solenoid-operated proportional reducer unit 3A1 or A2 receive different electricity
During signal, proportional pressure-reducing valve valve element produces different displacements, then controls different pilot pressures, and different pilot pressures are corresponding
The aperture displacement of different valve core of main valve, then corresponds to different flows, realizes the controllable of two-way special equipment speed speed.
Main pump 1 is by pioneer pump with master control pump group into respectively to working connection and guide's oil circuit fuel feeding；Hydraulic oil either main pump
1 oil suction or the oil return of equipment, are all in same hydraulic oil container 9.
As shown in Figure 1, 2, the present invention includes main pump 1, main control valve 2, solenoid-operated proportional reducer unit 3, shuttle valve 4, liquid controlled reversing
Valve 5, solenoid directional control valve 6, filter 7, pressure switch 8, hydraulic oil container 9, foot valve 10, electric switch group 11, unidirectional special machine
Tool 12 and two-way special equipment 13 and its corresponding pipeline composition.When unidirectional special equipment is quartering hammer, as shown in figure 1, control
Foot valve 10 processed, pressure switch 8 is opened and sends electric signal to the b ends of solenoid directional control valve 6, and solenoid directional control valve 6 commutates, and now
1 hydraulic fluid port and the 5th hydraulic fluid port, the 3rd hydraulic fluid port and the connection of the 4th hydraulic fluid port, guide's oil circuit pressure signal transmission to XBo mouthfuls of main valve, control master control
The valve element of valve 2 commutates, and now working connection hydraulic oil flows to the actuator port of quartering hammer by hydraulic fluid port Bo, and pilot operated directional control valve 5 is without first
The pressure signal on Oil Guide road, the 1st hydraulic fluid port and the connection of the 3rd hydraulic fluid port under the action of the spring, the oil return of quartering hammer passes through filter 7 times
To hydraulic oil container 9, quartering hammer normal work.Due to solenoid directional control valve 6a ends not it is electric in the case of cut off the two-way spy of control
The guide's oil circuit of different equipment, it is to avoid during maloperation, cause the damage of quartering hammer, serve the work of protection hydraulic system
With.
When special equipment is replaced by thumb pincers oil cylinder, as shown in Fig. 2 pressing the button PB of electric switch group 11, relay
Device K0 sends electric signal to solenoid directional control valve 6a ends, and solenoid directional control valve 6 commutates, now the 1st hydraulic fluid port and the 5th hydraulic fluid port, the 2nd hydraulic fluid port
Connected with the 4th hydraulic fluid port, when sliding variable resistance switch R1, solenoid-operated proportional reducer unit A1 receives the telecommunications of master controller transmission
Number, connect guide's oil circuit, guide oil is delivered to pilot operated directional control valve 5 by shuttle valve 4, pilot operated directional control valve 5 commutates, the 1st hydraulic fluid port and
2nd hydraulic fluid port is connected.While XBo mouth of the pressure signal transmission of pilot pressure oil to main control valve 2, main valve plug commutation, thumb pincers oil
The big chamber oil-feed of cylinder, realizes the pinching action of thumb pincers.Relay K0 only has the action of folding, and variable electrical signal passes through main control
Device is sent to proportional pressure-reducing valve group 3, and then guide's oil circuit produces different pilot pressures, so as to control the different opening of main control valve
Size, produces different flows, reaches that thumb clamps the purpose of speed variable.
When sliding variable resistance switch R2, solenoid-operated proportional reducer unit A2 receives the electric signal of master controller transmission, makes
Guide's oil circuit is connected, and guide oil is delivered to pilot operated directional control valve 5 by shuttle valve 4, and pilot operated directional control valve 5 commutates, the 1st hydraulic fluid port and the 2nd oil
Mouth connection.While XAo mouth of the pressure signal transmission of guide's oil circuit to main control valve 2, main valve plug commutation, the thumb pincers small chamber of oil cylinder enters
Oil, realizes the discharging action of thumb pincers.
Therefore, when driving unidirectional special equipment, it is only necessary to foot-operated foot valve 10, you can control；Drive two-way special equipment
When, it is necessary first to switch mode, that is, button PB is pressed, variable resistance switch is then slided again, and just returning makes two-way special machine
Tool is acted, if pattern does not switch, does not press button PB, two-way special equipment can not be acted all the time.Button PB's
In the presence of primarily in the unidirectional special equipment of driving, if imprudence has slided variable resistance switch by mistake, will not also produce
Damage to unidirectional special equipment.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of excavator multifunctional tool hydraulic booster system, it is characterised in that including main control valve（2）, solenoid-operated proportional decompression
Valve group（3）, shuttle valve（4）, pilot operated directional control valve（5）, solenoid directional control valve（6）, filter（7）, pressure switch（8）, hydraulic oil container
（9）, foot valve（10）With electric switch group（11）；
When the unidirectional special equipment of driving（12）When, foot valve（10）Through pressure switch（8）To solenoid directional control valve（6）B ends send
Electric signal, controls solenoid directional control valve（6）Commutation, makes solenoid directional control valve（6）The first hydraulic fluid port can be connected with the 5th hydraulic fluid port, the 3rd oil
Mouthful it can be connected with the 4th hydraulic fluid port, the pressure signal transmission of guide's oil circuit to main control valve（2）, control main control valve（2）Valve element commutates, and makes
From hydraulic oil container（9）The unidirectional special equipment of working connection hydraulic oil flow direction of extraction（12）Actuator port；Now, pilot operated directional control valve
（5）There is no the pressure signal of guide's oil circuit, under the action of the spring pilot operated directional control valve（5）The 1st hydraulic fluid port and the 3rd hydraulic fluid port connection,
Unidirectional special equipment（12）Oil return after the 1st hydraulic fluid port, the 3rd hydraulic fluid port by filter（7）Return to hydraulic oil container（9）；
When the two-way special equipment of driving（13）When, electric switch group（11）To solenoid directional control valve（6）A ends send electric signal, control
Solenoid directional control valve processed（6）Commutation, makes solenoid directional control valve（6）The first hydraulic fluid port can be connected with the 5th hydraulic fluid port, the second hydraulic fluid port can be with
Four hydraulic fluid ports are connected；Solenoid-operated proportional reducer unit（3）The two-way special equipment of cutting-off controlling（13）Guide's oil circuit；Then, electricity is passed through
Air cock group（11）Adjustable electric signal, solenoid-operated proportional reducer unit are sent to master controller（3）According to the main control received
The adjustable electric signal that device is sent, connects guide's oil circuit, and the pressure signal of guide's oil circuit passes through shuttle valve（4）Hydraulic control is sent to change
To valve（5）, make pilot operated directional control valve（5）1st hydraulic fluid port and the connection of the 2nd hydraulic fluid port, control the switching of working connection；Meanwhile, guide's oil circuit
Pressure signal transmission is to main control valve（2）, control main control valve（2）Valve element produces different commutations, according to main control valve（2）Valve element is changed
Two-way special equipment is flowed to working connection hydraulic oil is made（13）Different oil suction chambers, realize two-way special equipment（13）Difference move
Make.
2. excavator multifunctional tool hydraulic booster system according to claim 1, it is characterised in that electric switch group
（11）Include adjusting resistance, when slip electric switch group（11）In regulation resistance when, by master controller to solenoid-operated proportional
Reducer unit（3）Send adjustable electric signal.
3. excavator multifunctional tool hydraulic booster system according to claim 1 or 2, it is characterised in that electric switch
Group（11）Include comprising a regulation resistance in two regulation branch roads of parallel connection, each branch road, regulation resistance passes through electric wire
Road is by solenoid-operated proportional reducer unit（3）It is connected with master controller.
4. excavator multifunctional tool hydraulic booster system according to claim 3, it is characterised in that slidable adjustment electricity
When resistance is to diverse location, by master controller to solenoid-operated proportional reducer unit（3）Corresponding electric signal is sent, ratio is depressurized
Valve group（3）Valve element produce corresponding displacement, guide oil is formed corresponding pilot pressure signal, corresponding pilot pressure signal
Through shuttle valve（4）, pilot operated directional control valve（5）Control corresponding main control valve（2）Valve element produces different aperture displacements, so that correspondence is not
The same two-way special equipment of flux and flow direction, adjusts the operating rate of two-way special equipment.
5. excavator multifunctional tool hydraulic booster system according to claim 1, it is characterised in that unidirectional special equipment
（12）For quartering hammer or open band machine.
6. excavator multifunctional tool hydraulic booster system according to claim 1, it is characterised in that two-way special equipment
（13）For thumb pincers, hydraulic shear or grab pipe machine.
7. excavator multifunctional tool hydraulic booster system according to claim 1, it is characterised in that working connection hydraulic oil
It is by main pump（1）From hydraulic oil container（9）Extract out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747249.3A CN105297822B (en) | 2015-11-06 | 2015-11-06 | A kind of excavator multifunctional tool hydraulic booster system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747249.3A CN105297822B (en) | 2015-11-06 | 2015-11-06 | A kind of excavator multifunctional tool hydraulic booster system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105297822A CN105297822A (en) | 2016-02-03 |
| CN105297822B true CN105297822B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510747249.3A Active CN105297822B (en) | 2015-11-06 | 2015-11-06 | A kind of excavator multifunctional tool hydraulic booster system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194864A (en) * | 2016-08-31 | 2016-12-07 | 徐州徐工挖掘机械有限公司 | A kind of general hydraulic pressure of pipe line system and excavator |
| CN107190799A (en) * | 2017-07-19 | 2017-09-22 | 徐州徐工挖掘机械有限公司 | A kind of many equipment flow limit systems of hydraulic crawler excavator and method |
| CN107956233A (en) * | 2017-11-29 | 2018-04-24 | 徐州徐工挖掘机械有限公司 | A kind of excavator multifunctional tool control of flow and pressure system |
| CN111910707B (en) * | 2020-08-18 | 2024-08-20 | 厦门厦工机械股份有限公司 | Multifunctional accessory control management system and method for excavator |
| CN111962601A (en) * | 2020-09-14 | 2020-11-20 | 上海三一重机股份有限公司 | Tool auxiliary hydraulic system and excavator |
| CN115030257B (en) * | 2022-05-16 | 2024-05-14 | 中联重科土方机械有限公司 | Control system for excavator and excavator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3827220B2 (en) * | 2002-05-23 | 2006-09-27 | 株式会社小松製作所 | Hydraulic circuit for attached work machine |
| KR101415860B1 (en) * | 2007-08-13 | 2014-07-09 | 크라아크이큇프멘트컴파니 | Hydraulic control system for a swiveling construction machine |
| JP5203131B2 (en) * | 2008-10-21 | 2013-06-05 | 日立建機株式会社 | Hydraulic circuit for construction machinery |
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