CN206071972U - General hydraulic pressure of pipe line system and excavator - Google Patents
General hydraulic pressure of pipe line system and excavator Download PDFInfo
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- CN206071972U CN206071972U CN201621008577.8U CN201621008577U CN206071972U CN 206071972 U CN206071972 U CN 206071972U CN 201621008577 U CN201621008577 U CN 201621008577U CN 206071972 U CN206071972 U CN 206071972U
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Abstract
This utility model discloses a kind of general hydraulic pressure of pipe line system and excavator, belong to hydraulic crawler excavator apparatus field, including gear pump, pilot valve, unidirectional electricity proportional pressure-reducing valve, the pilot operated directional control valve being connected with unidirectional electric proportional pressure-reducing valve pipeline and the multifunctional tool being connected with pilot operated directional control valve pipeline and electric control reversing valve, multifunctional tool and electric control reversing valve pipeline are connected；Unidirectional electricity proportional pressure-reducing valve includes unidirectional electricity proportional pressure-reducing valve I, unidirectional electricity proportional pressure-reducing valve II, and unidirectional electricity proportional pressure-reducing valve I, unidirectional electricity proportional pressure-reducing valve II are connected in parallel between pilot valve and pilot operated directional control valve；Pilot valve, unidirectional electricity proportional pressure-reducing valve I, unidirectional electricity proportional pressure-reducing valve II, electric control reversing valve and pilot operated directional control valve have valve port to be connected with hydraulic oil container pipeline respectively.The general hydraulic pressure of pipe line system, effectively reduces the hydraulic system pipeline quantity specially matched because of the parameter request of different multifunctional tools, while decreasing the special control system needed for matching multifunctional tool, maintenance difficulty is substantially reduced.
Description
Technical field
This utility model is related to a kind of general hydraulic pressure of pipe line system and excavator, belongs to hydraulic crawler excavator apparatus field.
Background technology
The standby reversal valve of general only one of which on current hydraulic crawler excavator, a reversal valve can only connect a kind of Multi Role Aircraft
Tool, when needing to change different multifunctional tools, due to pressure and the isoparametric difference of flow, the liquid for needing more transducer set new
Pressure pipe road, while needing to increase some new control modes, pipeline adjustment is complex, and causes the waste of original pipeline.
The content of the invention
For the problem that above-mentioned prior art is present, this utility model provides a kind of general hydraulic pressure of pipe line system and excavation
Machine, can match various multifunctional tools, and can meet the parameter request of different equipments.
To achieve these goals, a kind of general hydraulic pressure of pipe line system that this utility model is adopted, including gear pump and tooth
The wheel pump conduit pilot valve being connected, the unidirectional electric proportional pressure-reducing valve being connected with pilot valve pipeline and unidirectional electricity proportional pressure-reducing valve pipe
Pilot operated directional control valve and the multifunctional tool being connected with pilot operated directional control valve pipeline and electric control reversing valve that road is connected, it is described multi-functional
Equipment and the series connection of electric control reversing valve pipeline；
Unidirectional electricity proportional pressure-reducing valve includes unidirectional electricity proportional pressure-reducing valve I, unidirectional electricity proportional pressure-reducing valve II, the unidirectional electricity ratio
Example air relief valve I, unidirectional electricity proportional pressure-reducing valve II are connected in parallel between pilot valve and pilot operated directional control valve；
The pilot valve, unidirectional electricity proportional pressure-reducing valve I, unidirectional electricity proportional pressure-reducing valve II, electric control reversing valve and liquid controlled reversing
Valve has valve port to be connected with hydraulic oil container pipeline respectively.
Used as improvement, the gear pump is connected with the D mouth pipelines of pilot valve, and the E mouths of pilot valve and unidirectional electric ratio reduce pressure
The H mouths pipeline connection of valve I, the F mouths of pilot valve are connected with the S mouth pipelines of unidirectional electric proportional pressure-reducing valve II；
The unidirectional electricity U mouths of proportional pressure-reducing valve I are connected with the Xb mouth pipelines of pilot operated directional control valve, unidirectional electricity proportional pressure-reducing valve II
Q mouths are connected with the Xa mouth pipelines of pilot operated directional control valve；
The B mouths of pilot operated directional control valve are connected with the K mouth pipelines of multifunctional tool, the A mouths of pilot operated directional control valve and electric control reversing valve
The connection of N mouths pipeline, the M mouths of the electric control reversing valve are connected with the L mouth pipelines of multifunctional tool.
Used as improvement, the hydraulic system also includes plunger displacement pump, check valve, the plunger displacement pump and the series connection of check valve pipeline, institute
State check valve pipeline to be connected on pilot operated directional control valve.
Used as improvement, the check valve is connected with the P mouth seriess pipe of pilot operated directional control valve.
Used as improvement, the hydraulic system also includes overflow valve, and the overflow valve is connected with the P mouths parallel pipeline of pilot operated directional control valve
Connect.
In addition, this utility model additionally provides a kind of excavator, which includes general hydraulic pressure of pipe line system described in any of the above-described
System.
Compared with prior art, this utility model by electric control reversing valve, pilot operated directional control valve, unidirectional electricity proportional pressure-reducing valve and
Overflow valve combines, and devises a set of general hydraulic pressure of pipe line system, can match various multifunctional tools, meet multifunctional tool
Many kinds of parameters require, while effectively can realize multifunctional tool pressure adjustment and flow adjustment, can also match unidirectionally to enter
Oily hydraulic system or two-way oil-feeds hydraulic system.The general hydraulic pressure of pipe line system, effectively reduces because of different multifunctional tools
Parameter request and the hydraulic system pipeline quantity that specially matches, while decreasing the special control needed for matching multifunctional tool
System processed, has huge using value in engineering machinery field, greatly reduces the Financial cost of hydraulic system, while by
In the versatility of hydraulic pressure of pipe line system, maintenance difficulty is substantially reduced.
Description of the drawings
Fig. 1 is the structural representation of this utility model hydraulic system；
In figure：1st, gear pump, 2, pilot valve, 3, unidirectional electricity proportional pressure-reducing valve I, 4, unidirectional electricity proportional pressure-reducing valve II, 5, liquid
Control reversal valve, 6, multifunctional tool, 7, electric control reversing valve, 8, check valve, 9, plunger displacement pump, 10, overflow valve.
Specific embodiment
To make the purpose of this utility model, technical scheme and advantage of greater clarity, below by drawings and Examples,
This utility model is further elaborated.However, it should be understood that specific embodiment described herein is only to solve
This utility model is released, scope of the present utility model is not limited to.
Unless otherwise defined, all of technical term used herein and scientific terminology with belong to skill of the present utility model
The implication that the technical staff in art field is generally understood that is identical, herein in term used in the description of the present utility model only
It is for the purpose for describing specific embodiment, it is not intended that in restriction this utility model.
As shown in figure 1, a kind of general hydraulic pressure of pipe line system, including gear pump 1, the pilot valve being connected with 1 pipeline of gear pump
2nd, the unidirectional electric proportional pressure-reducing valve being connected with 2 pipeline of pilot valve, the pilot operated directional control valve being connected with unidirectional electric proportional pressure-reducing valve pipeline
5th, and with 5 pipeline of pilot operated directional control valve the multifunctional tool 6 being connected and electric control reversing valve 7, the multifunctional tool 6 and electric control reversing
7 pipeline of valve is connected；
Unidirectional electricity proportional pressure-reducing valve includes unidirectional electricity proportional pressure-reducing valve I 3, unidirectional electricity proportional pressure-reducing valve II 4, the unidirectional electricity
Proportional pressure-reducing valve I 3, unidirectional electricity proportional pressure-reducing valve II 4 are connected in parallel between pilot valve 2 and pilot operated directional control valve 5；
The pilot valve 2, unidirectional electricity proportional pressure-reducing valve I 3, unidirectional electricity proportional pressure-reducing valve II 4, electric control reversing valve 7 and hydraulic control
Reversal valve 5 has valve port to be connected with hydraulic oil container pipeline respectively.
Used as the improvement of embodiment, the gear pump 1 is connected with the D mouth pipelines of pilot valve 2, the E mouths of pilot valve 2 with it is unidirectional
The H mouths pipeline connection of electric proportional pressure-reducing valve I 3, the F mouths of pilot valve 2 are connected with the S mouth pipelines of unidirectional electric proportional pressure-reducing valve II 4；
The unidirectional electricity U mouths of proportional pressure-reducing valve I 3 are connected with the Xb mouth pipelines of pilot operated directional control valve 5, unidirectional electricity proportional pressure-reducing valve II
4 Q mouths are connected with the Xa mouth pipelines of pilot operated directional control valve 5；
The B mouths of pilot operated directional control valve 5 are connected with the K mouth pipelines of multifunctional tool 6, the A mouths of pilot operated directional control valve 5 and electric control reversing
The N mouths pipeline connection of valve 7, the M mouths of the electric control reversing valve 7 are connected with the L mouth pipelines of multifunctional tool 6.
Used as the improvement of embodiment, the hydraulic system also includes plunger displacement pump 9, check valve 8, the plunger displacement pump 9 and check valve 8
Pipeline is connected, and 8 pipeline of the check valve is connected on pilot operated directional control valve 5.
Used as the improvement of embodiment, the check valve 8 is connected with the P mouth seriess pipe of pilot operated directional control valve 5.
Used as the improvement of embodiment, the hydraulic system also includes overflow valve 10, the overflow valve 10 and pilot operated directional control valve 5
P mouths parallel pipeline connects.
In addition, this utility model additionally provides a kind of excavator, including general hydraulic pressure of pipe line system described in any of the above-described.
During using the hydraulic system, gear pump 1 is connected with the D mouth pipelines of pilot valve 2, the C mouths of pilot valve 2 and hydraulic oil
Case pipeline connects, the H mouths connection of the E mouths of pilot valve 2 and unidirectional electricity proportional pressure-reducing valve I 3, the F mouths of pilot valve 2 and unidirectionally electricity ratio
The S mouths pipeline connection of air relief valve II 4；
The G mouths of unidirectional electricity proportional pressure-reducing valve I 3, the J mouths of unidirectional electricity proportional pressure-reducing valve II 4 are connected with hydraulic oil container pipeline respectively
Connect, the unidirectional electricity U mouths of proportional pressure-reducing valve I 3 are connected with the Xb mouth pipelines of pilot operated directional control valve 5, the Q of unidirectional electricity proportional pressure-reducing valve II 4
Mouth is connected with the Xa mouth pipelines of pilot operated directional control valve 5；
The B mouths of pilot operated directional control valve 5 are connected with the K mouth pipelines of multifunctional tool 6, the A mouths of pilot operated directional control valve 5 and electric control reversing
The N mouths pipeline connection of valve 7, the R mouths of electric control reversing valve 7 are connected with hydraulic oil container pipeline, the M mouths of electric control reversing valve 7 with it is multi-functional
The L mouths pipeline connection of equipment 6；
Plunger displacement pump 9 is connected with 8 series pipe of check valve, and check valve 8 is connected with the P mouth seriess pipe of pilot operated directional control valve 5, liquid
The P mouths of control reversal valve 5 are connected with 10 parallel pipeline of overflow valve, and the T mouths of pilot operated directional control valve 5 are connected with hydraulic oil container pipeline.
Originally the implementation of the unidirectional pipeline hydraulic system of general hydraulic pressure of pipe line system matches is：
The electromagnetic valve power-off of electric control reversing valve 7, valve element are moved to the left under spring force, i.e., electric control reversing valve 7 is right
The logical oil in position；During the Xb mouth oil supply of pilot operated directional control valve 5, the valve element of pilot operated directional control valve 5 moves right, the logical oil in left position；Hydraulic oil is from post
Plug pump 9, flows through check valve 8, and from the P mouth oil-feeds of pilot operated directional control valve 5, the B mouths from pilot operated directional control valve 5 are fuel-displaced, into Multi Role Aircraft
The K mouths of tool 6；M mouth of the hydraulic oil through electric control reversing valve 7 at the L mouths of multifunctional tool 6, and then hydraulic oil is connected by R mouths
Case.When the Xa mouth oil supply of pilot operated directional control valve 5, the valve element of pilot operated directional control valve 5 is moved to the left, the logical oil in right position, and hydraulic oil is from plunger
Pump 9, flows through check valve 8, and from the P mouth oil-feeds of pilot operated directional control valve 5, the A mouths from pilot operated directional control valve 5 are fuel-displaced, flow through electric control reversing valve 7
N mouths, high-pressure oil passage is obstructed.Therefore, aforesaid way can only match unidirectional pipeline hydraulic system.
Originally the implementation of the two-way hydraulic pressure of pipe line system of general hydraulic pressure of pipe line system matches is：
The solenoid valves of electric control reversing valve 7, valve element are moved right under spring force, i.e., electric control reversing valve 7 is left
The logical oil in position, during the Xb mouth oil supply of pilot operated directional control valve 5, the valve element of pilot operated directional control valve 5 moves right, the logical oil in left position, and hydraulic oil is from post
Plug pump 9, flows through check valve 8, and from the P mouth oil-feeds of pilot operated directional control valve 5, the B mouths from pilot operated directional control valve 5 are fuel-displaced, into Multi Role Aircraft
The K mouths of tool, M mouth of the hydraulic oil through electric control reversing valve 7 at the L mouths of multifunctional tool, flow through the N mouths of electric control reversing valve 7, pass through
The A mouths of pilot operated directional control valve 5, flow to the T mouths of pilot operated directional control valve 5, and then flow back to hydraulic oil container；The Xa mouth oil supply of pilot operated directional control valve 5
When, the valve element of pilot operated directional control valve 5 is moved to the left, and the logical oil in right position, hydraulic oil flow through check valve 8, from liquid controlled reversing from plunger displacement pump 9
The P mouth oil-feeds of valve 5, the A mouths from pilot operated directional control valve 5 are fuel-displaced, flow through the N mouths of electric control reversing valve 7, into the M of electric control reversing valve 7
Mouthful, and then into the L mouths of multifunctional tool.The hydraulic oil of multifunctional tool K mouths, by the B mouths of pilot operated directional control valve 5, flows to liquid
The T mouths of control reversal valve 5, and then flow back to hydraulic oil container.Therefore, aforesaid way can match two-way hydraulic pressure of pipe line system.
The pressure adjustment mode of multifunctional tool hydraulic pressure of pipe line system is：By arrange overflow valve 10 oil pressure relief value come
The pressure of adjustment multifunctional tool hydraulic pressure of pipe line system.
The flow adjustment mode of the unidirectional pipeline hydraulic system of multifunctional tool is：
Unidirectional electricity proportional pressure-reducing valve I 3 is powered, unidirectional electricity II 4 power-off of proportional pressure-reducing valve, the guide oil of gear pump 1, Jing Guoxian
The D mouths of pilot valve 2, into the E mouths of pilot valve 2, enter the Xb of pilot operated directional control valve 5 after unidirectional electricity proportional pressure-reducing valve I 3 reduces pressure
Mouthful, the Xa oral fluids force feed of pilot operated directional control valve 5, through the Q mouths of unidirectional electricity proportional pressure-reducing valve II 4, enters unidirectional electricity proportional pressure-reducing valve
II 4 J mouths, and then flow into hydraulic oil container；By the current value of the unidirectional electricity proportional pressure-reducing valve I 3 of adjustment, carry out proportional control liquid
The valve core opening size of control reversal valve 5, and then control the hydraulic fluid flow rate into multifunctional tool.Because of unidirectional electricity proportional pressure-reducing valve
II 4 power-off, the guide oil of the output of gear pump 1, by the D mouths of pilot valve 2, through the F mouths of pilot valve 2, subtract in unidirectional electricity ratio
The S mouths of pressure valve II 4 are blocked, it is impossible to realize that the valve element of pilot operated directional control valve 5 is moved to the left.Therefore unidirectional pipeline hydraulic pressure system can only be realized
The flow adjustment of system.
The flow adjustment mode of the two-way hydraulic pressure of pipe line system of multifunctional tool is：
Unidirectional electricity proportional pressure-reducing valve I 3 is powered, and unidirectional electricity proportional pressure-reducing valve II 4 is powered, the logical guide oil of E mouths of pilot valve 2, C
Mouth connection hydraulic oil container, the guide oil of gear pump 1, through the D mouths of pilot valve 2, into the E mouths of pilot valve 2, compare through unidirectional electricity
Example air relief valve I 3 enters the Xb mouths of pilot operated directional control valve 5 after reducing pressure, valve element moves right, left position oil-feed, the Xa mouths of pilot operated directional control valve 5
Hydraulic oil, through the Q mouths of unidirectional electricity proportional pressure-reducing valve II 4, enters the S mouths of unidirectional electricity proportional pressure-reducing valve II 4, through pilot valve 2
F mouths, flow to the C mouths of pilot valve 2, and then flow to hydraulic oil container.By the current value of the unidirectional electricity proportional pressure-reducing valve I 3 of adjustment, come
The valve core opening size of proportional control pilot operated directional control valve 5, and then control the hydraulic fluid flow rate into multifunctional tool K mouths；
Unidirectional electricity proportional pressure-reducing valve I 3 is powered, and unidirectional electricity proportional pressure-reducing valve II 4 is powered, the logical guide oil of F mouths of pilot valve 2, C mouth connection liquids
Force feed case, the guide oil of gear pump 1, through the D mouths of pilot valve 2, into the F mouths of pilot valve 2, through unidirectional electricity proportional pressure-reducing valve
The Xa mouths of pilot operated directional control valve 5 are entered after II 4 decompressions, valve element is moved to the left, right position oil-feed, the Xb oral fluids force feed of pilot operated directional control valve 5,
Through the U mouths of unidirectional electricity proportional pressure-reducing valve I 3, the H mouths of unidirectional electricity proportional pressure-reducing valve I 3 are entered, through the E mouths of pilot valve 2, flow direction
The C mouths of pilot valve 2, and then flow to hydraulic oil container.By the current value of the unidirectional electricity proportional pressure-reducing valve II 4 of adjustment, come proportional
The valve core opening size of control pilot operated directional control valve 5, and then control the hydraulic fluid flow rate into multifunctional tool L mouths.Therefore can be with
Realize the flow adjustment of two-way hydraulic pressure of pipe line system.
The general hydraulic pressure of pipe line system, effectively reduces the liquid specially matched because of the parameter request of different multifunctional tools
Pressure system pipeline quantity, while the special control system needed for matching multifunctional tool is decreased, in engineering machinery field
With huge using value, the Financial cost of hydraulic system is greatly reduced, simultaneously because hydraulic pressure of pipe line system is general
Property, maintenance difficulty is substantially reduced.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at this
Any modification, equivalent or improvement made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.
Claims (6)
1. a kind of general hydraulic pressure of pipe line system, it is characterised in that including gear pump (1), the guide being connected with gear pump (1) pipeline
Valve (2), the unidirectional electric proportional pressure-reducing valve being connected with pilot valve (2) pipeline, the hydraulic control being connected with unidirectional electric proportional pressure-reducing valve pipeline
Reversal valve (5), and the multifunctional tool (6) that is connected with pilot operated directional control valve (5) pipeline and electric control reversing valve (7), it is described multi-functional
Equipment (6) and the series connection of electric control reversing valve (7) pipeline；
Unidirectional electricity proportional pressure-reducing valve includes unidirectional electricity proportional pressure-reducing valve I (3), unidirectional electricity proportional pressure-reducing valve II (4), the unidirectional electricity
Proportional pressure-reducing valve I (3), unidirectional electricity proportional pressure-reducing valve II (4) are connected in parallel between pilot valve (2) and pilot operated directional control valve (5)；
The pilot valve (2), unidirectional electricity proportional pressure-reducing valve I (3), unidirectional electricity proportional pressure-reducing valve II (4), electric control reversing valve (7) and
Pilot operated directional control valve (5) has valve port to be connected with hydraulic oil container pipeline respectively.
2. a kind of general hydraulic pressure of pipe line system according to claim 1, it is characterised in that the gear pump (1) and guide
The D mouths pipeline connection of valve (2), the E mouths of pilot valve (2) are connected with the H mouth pipelines of unidirectional electric proportional pressure-reducing valve I (3), pilot valve
(2) F mouths are connected with the S mouth pipelines of unidirectional electric proportional pressure-reducing valve II (4)；
The unidirectional electricity U mouths of proportional pressure-reducing valve I (3) are connected with the Xb mouth pipelines of pilot operated directional control valve (5), unidirectional electricity proportional pressure-reducing valve II
(4) Q mouths are connected with the Xa mouth pipelines of pilot operated directional control valve (5)；
The B mouths of pilot operated directional control valve (5) are connected with the K mouth pipelines of multifunctional tool (6), and the A mouths of pilot operated directional control valve (5) are changed with automatically controlled
Connect to the N mouths pipeline of valve (7), the M mouths of the electric control reversing valve (7) are connected with the L mouth pipelines of multifunctional tool (6).
3. a kind of general hydraulic pressure of pipe line system according to claim 1 and 2, it is characterised in that the hydraulic system also includes
Plunger displacement pump (9), check valve (8), the plunger displacement pump (9) and the series connection of check valve (8) pipeline, check valve (8) pipeline are connected on
On pilot operated directional control valve (5).
4. a kind of general hydraulic pressure of pipe line system according to claim 3, it is characterised in that the check valve (8) and hydraulic control
The P mouths series pipe connection of reversal valve (5).
5. a kind of general hydraulic pressure of pipe line system according to claim 4, it is characterised in that the hydraulic system also includes overflow
Valve (10), the overflow valve (10) are connected with the P mouth parallel pipelines of pilot operated directional control valve (5).
6. a kind of excavator, it is characterised in that including general hydraulic pressure of pipe line system described in any one of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621008577.8U CN206071972U (en) | 2016-08-31 | 2016-08-31 | General hydraulic pressure of pipe line system and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621008577.8U CN206071972U (en) | 2016-08-31 | 2016-08-31 | General hydraulic pressure of pipe line system and excavator |
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| Publication Number | Publication Date |
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| CN206071972U true CN206071972U (en) | 2017-04-05 |
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ID=58434811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621008577.8U Active CN206071972U (en) | 2016-08-31 | 2016-08-31 | General hydraulic pressure of pipe line system and excavator |
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| Country | Link |
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| CN (1) | CN206071972U (en) |
Cited By (2)
| 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 |
| CN114060332A (en) * | 2021-12-02 | 2022-02-18 | 中煤科工集团重庆研究院有限公司 | Anti-deviation crawler walking hydraulic system |
-
2016
- 2016-08-31 CN CN201621008577.8U patent/CN206071972U/en active Active
Cited By (3)
| 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 |
| CN114060332A (en) * | 2021-12-02 | 2022-02-18 | 中煤科工集团重庆研究院有限公司 | Anti-deviation crawler walking hydraulic system |
| WO2023097872A1 (en) * | 2021-12-02 | 2023-06-08 | 中煤科工集团重庆研究院有限公司 | Anti-deviation crawler travel hydraulic system |
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