CN208364511U - Transfer pressure adjusts the speed switching valve - Google Patents
Transfer pressure adjusts the speed switching valve Download PDFInfo
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- CN208364511U CN208364511U CN201820773732.8U CN201820773732U CN208364511U CN 208364511 U CN208364511 U CN 208364511U CN 201820773732 U CN201820773732 U CN 201820773732U CN 208364511 U CN208364511 U CN 208364511U
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- pressure
- oil inlet
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Abstract
Transfer pressure adjusts the speed switching valve, and when the first solenoid directional control valve is in original state, the second solenoid directional control valve is in Median Function, the pressure of executing agency determines that the first overflow valve is as secondary pressure by the principal pressure of the first multi-way valve in the first multi-way valve.When the second solenoid directional control valve left position or right position work, hydraulic oil changes valve through the first electromagnetic switch, the first multi-way valve, the second electromagnetism and enters the second multi-way valve by the 8th hydraulic fluid port G8, and flow regulating function and pressure classification function are realized at this time.Specifically there is throttling action, principal pressure is determined that secondary pressure is determined by the principal pressure of the first multi-way valve by the second overflow valve when left position；Principal pressure is determined by the principal pressure of the first multi-way valve when right position, and secondary pressure is determined by principal pressure after the second multi-way valve.After the first solenoid directional control valve obtains electric, hydraulic oil crosses the 8th hydraulic fluid port G8 into the second multi-way valve through the first solenoid valve reversal valve, and principal pressure determines that the first overflow valve is as secondary pressure by principal pressure after the second multi-way valve.
Description
Technical field
The utility model relates to transfer pressures to adjust the speed switching valve.
Background technique
General multi-way valve, system have a main safety valve, other work connection can increase secondary relief as needed,
But it can not achieve speed regulation, proportioning valve may be implemented to adjust the speed, but expensive, and control is complicated；Using multiplex pump, increase cost.?
In the hydraulic system of multiple multi-way valve controls, it is contemplated that cooperate two sets of multi-way valves using a hydraulic pump, make two sets of multi-way valves
Main safety valve, which cooperates, adjusts each actuator pressure, and the purpose of the present invention is to provide what a kind of achievable speed regulation needed to cut
Change valve.
Utility model content
The purpose of this utility model is to provide transfer pressure speed regulation that is a kind of low in cost and can realizing pressure setting to cut
Change valve.
To achieve the above object, the transfer pressure speed regulation switching valve of the utility model uses following technical scheme:
Transfer pressure adjusts the speed switching valve, including totally 12 hydraulic fluid ports, the first solenoid valve, second solenoid valve, third are electric by G1-G12
Magnet valve, the 4th solenoid valve, the first check valve, second one-way valve, third check valve, the 4th check valve, the 5th check valve, first are overflow
Flow valve, the second overflow valve and fixed damping；First hydraulic fluid port G1 is communicated with the second hydraulic fluid port G2, third hydraulic fluid port G3, as transfer pressure
Adjust the speed the oil inlet of switching valve；First hydraulic fluid port G1 connects oil pump, by the first check valve as primary input hydraulic fluid port；Second hydraulic fluid port G2 connects
Pressure gauge or pressure switch or pressure sensor, third hydraulic fluid port G3 for measuring pressure connect other power hydraulic fluid ports；4th oil
Mouthful G4 is drain tap, and the 5th hydraulic fluid port G5 is emergency power hydraulic fluid port, can both do oil return with and also used with oil inlet；6th hydraulic fluid port G6 with
7th hydraulic fluid port G7 is connected, as oil return opening；8th hydraulic fluid port G8 is used to connect the oil inlet of the second multi-way valve, and the 9th hydraulic fluid port G9 is for connecing
One of oil outlet that master control joins in first multi-way valve, the tenth hydraulic fluid port G10 are used to connect what master control in the first multi-way valve joined
Oil inlet；11st hydraulic fluid port G11 and the 12nd hydraulic fluid port G12 connect executive component；
First solenoid valve is two-position four way change valve, and oil inlet p1 meets the first hydraulic fluid port G1, and oil return opening t1 connects the 4th hydraulic fluid port
G4, the first working hole a1 meet the 8th hydraulic fluid port G8 through second one-way valve, and the second working hole b1 connects the tenth hydraulic fluid port through third check valve
G10；Second solenoid valve is three position four-way electromagnetic valve, and oil inlet p2 meets the 9th hydraulic fluid port G9, oil return opening t2 connect the 6th hydraulic fluid port G6 or
7th hydraulic fluid port G7, the first working hole a2 successively connect the second overflow valve oil inlet, the 4th check valve oil inlet, fixed damping and the 5th
Hydraulic fluid port G5, the 5th hydraulic fluid port G5 is as emergency power mouth；Second actuator port b2 successively connects the 5th check valve oil inlet and the 8th oil
Mouth G8；The oil return of second overflow valve is connected to the 6th hydraulic fluid port G6 or the 7th hydraulic fluid port G7；Third solenoid valve is two-position three way magnetic valve,
Oil inlet p3 meets the 5th hydraulic fluid port G5, and the first actuator port a3 meets the oil inlet p4 of the 4th solenoid valve 4, and the second actuator port b3 connects
Eight hydraulic fluid port G8；4th solenoid valve is three position four-way electromagnetic valve, and oil return opening t4 connects the 6th hydraulic fluid port G6 or the 7th hydraulic fluid port G7, the first work
Make hydraulic fluid port a4 and meet the 11st hydraulic fluid port G11, the second actuator port b4 meets the 12nd hydraulic fluid port G12；It is connected between oil inlet and oil return opening
There is the first overflow valve to limit system pressure.
The beneficial effects of the utility model are as follows: when adjusting the speed switching valve using the transfer pressure of the utility model, the first oil
Mouthful G1 as primary input hydraulic fluid port, third hydraulic fluid port G3 as assisting input oil port, indirect the of the 9th hydraulic fluid port G9 and the tenth hydraulic fluid port G10
One multi-way valve and it is followed by oil circuit, indirect second multi-way valve of the 8th hydraulic fluid port G8 and oil return opening and is followed by oil circuit.When the first electromagnetism changes
To when valve is in original state, the second solenoid directional control valve is in Median Function, the pressure of executing agency passes through in the first multi-way valve
The principal pressure of first multi-way valve determines that the transfer pressure adjusts the speed the first overflow valve of switching valve as secondary pressure.When the second electricity
When magnetic reversal valve left position or right position work, hydraulic oil changes valve by the 8th through the first electromagnetic switch, the first multi-way valve, the second electromagnetism
Hydraulic fluid port mouth enters the second multi-way valve, and flow regulating function and pressure classification function are realized at this time.Second solenoid directional control valve left position work
There is throttling action, principal pressure is determined that secondary pressure is determined by the principal pressure of the first multi-way valve by the second overflow valve when making；Second
Do not have throttling action when the work of solenoid directional control valve right position, principal pressure is determined by the principal pressure of the first multi-way valve, secondary pressure by
Principal pressure determines after second multi-way valve.After the first solenoid directional control valve obtains electric, hydraulic oil is through the first direct mistake of solenoid valve reversal valve
8th hydraulic fluid port mouth enters the second multi-way valve, and principal pressure determines that the first overflow valve is as two by principal pressure after the second multi-way valve at this time
Secondary pressure.So master control connection cooperates achievable pressure in the first solenoid directional control valve, the second solenoid directional control valve and the first multi-way valve
Classification is acted on speed regulation.
Detailed description of the invention
Fig. 1 is the schematic diagram that the transfer pressure of the utility model adjusts the speed one embodiment of switching valve；
Fig. 2 be connect the first multi-way valve after the transfer pressure in Fig. 1 adjusts the speed switching valve, the second multi-way valve and first external is held
Structural schematic diagram after row mechanism.
Specific embodiment
The embodiment of the transfer pressure speed regulation switching valve of the utility model:
The specific structure of the transfer pressure speed regulation switching valve of the utility model is as depicted in figs. 1 and 2, shares G1-G12 totally 12
A hydraulic fluid port, transfer pressure adjust the speed switching valve include the first solenoid valve 1, second solenoid valve 2, third solenoid valve 3, the 4th solenoid valve 4,
First check valve 5, second one-way valve 6, third check valve 7, the 4th check valve 8, the 5th check valve 9, the first overflow valve 10, second
Overflow valve 11 and fixed damping 12.
First hydraulic fluid port G1 is communicated with the second hydraulic fluid port G2, third hydraulic fluid port G3, the oil inlet as transfer pressure speed regulation switching valve.
First hydraulic fluid port G1 connects oil pump, is used as primary input hydraulic fluid port by the first check valve 5.Second hydraulic fluid port G2 connects the pressure for measuring pressure
Table or pressure switch or pressure sensor, third hydraulic fluid port G3 connect other power hydraulic fluid ports.4th hydraulic fluid port G4 is drain tap, the 5th oil
Mouthful G5 is emergency power hydraulic fluid port, can both do oil return with and also used with oil inlet.6th hydraulic fluid port G6 and the 7th hydraulic fluid port G7 is connected, as
Oil return opening.(the second multi-way valve 15 includes six multiple-way valves to oil inlet of the 8th hydraulic fluid port G8 for connecing the second multi-way valve 15, every more
The oil inlet of port valve is connect with the 8th hydraulic fluid port G8), it is one fuel-displaced to connect the connection of master control in the first multi-way valve 13 14 by the 9th hydraulic fluid port G9
Mouthful, the tenth hydraulic fluid port G10 connects the oil inlet of master control connection 14 in the first multi-way valve 13.11st hydraulic fluid port G11 and the 12nd hydraulic fluid port G12
Connect executive component.
First solenoid valve 1 is two-position four way change valve, and oil inlet p1 meets the first hydraulic fluid port G1, and oil return opening t1 connects the 4th hydraulic fluid port
G4, the first working hole a1 meet the 8th hydraulic fluid port G8 through second one-way valve 6, and the second working hole b1 connects the tenth hydraulic fluid port through third check valve 7
G10。
Second solenoid valve 2 is three position four-way electromagnetic valve, and oil inlet p2 meets the 9th hydraulic fluid port G9, and oil return opening t2 connects the 6th hydraulic fluid port
G6 or the 7th hydraulic fluid port G7, the first working hole a2 successively connect 11 oil inlet of the second overflow valve, 8 oil inlet of the 4th check valve, fixed resistance
Buddhist nun 12 and the 5th hydraulic fluid port G5.Second actuator port b2 successively meets 9 oil inlet of the 5th check valve and the 8th hydraulic fluid port G8.Second overflow valve
11 oil return is connected to the 6th hydraulic fluid port G6 or the 7th hydraulic fluid port G7.
Third solenoid valve 3 is two-position three way magnetic valve, and oil inlet p3 meets drain tap G5, and the first actuator port a3 connects the 4th
The oil inlet p4, the second actuator port b3 of solenoid valve 4 meet the 8th hydraulic fluid port G8.
4th solenoid valve 4 is three position four-way electromagnetic valve, and oil return opening t4 connects the 6th hydraulic fluid port G6 or the 7th hydraulic fluid port G7, the first work
Make hydraulic fluid port a4 and meet the 11st hydraulic fluid port G11, the second actuator port b4 meets the 12nd hydraulic fluid port G12.
In addition, being connected with the first overflow valve 10 between oil inlet and oil return opening to limit system pressure.
It is asked in the hydraulic system of valve using the multistage pressure flow of the utility model,
Pressure classification is accomplished by
1) the first pressure classification connects the between the 9th hydraulic fluid port G9 and the tenth hydraulic fluid port G10 of transfer pressure speed regulation switching valve
One multi-way valve 13, the 9th hydraulic fluid port G9 meet the first working hole a of the connection of master control in the first multi-way valve 13 14, and the tenth hydraulic fluid port G10 connects the
The oil inlet p of master control connection 14 in one multi-way valve 13, the middle position work of the O-shaped function of the first multi-way valve 13；
Transfer pressure adjusts the speed the middle position work of the right position work of the first solenoid valve 1 in switching valve, second solenoid valve 2, hydraulic
Oil successively flows to as follows: --- the first check valve 5 --- the oil inlet p1 of the first solenoid valve 1 --- be the first solenoid valve 1 for oil pump
Second working hole b1 --- --- the tenth hydraulic fluid port G10 --- the first multi-way valve --- the 9th hydraulic fluid port G9 --- oil of third check valve 7
Case.
Relief circuit is as follows: oil pump --- the first check valve 5 --- the oil inlet p1 of the first solenoid valve --- first electromagnetism
The second working hole b1 --- third check valve 7 --- oil inlet of master control connection 14 --- oil outlet of master control connection 14 of valve 1
V --- second solenoid valve oil inlet p2 --- second solenoid valve oil return opening t2 --- the 7th hydraulic fluid port G7 --- fuel tank.
Under the pressure classification, system pressure is followed by the main safety valve in oil circuit by master control connection 14 in the first multi-way valve 13
(overflow valve C) is limited, and is set up the main safety valve in the present embodiment and is limited oil pressure as 15MPa, secondary pressure is by the first overflow valve 10
It sets up, it is 24MPa that 10 set pressure of the first overflow valve is set up in the present embodiment.
2) second of pressure classification connects the between the 9th hydraulic fluid port G9 and the tenth hydraulic fluid port G10 of transfer pressure speed regulation switching valve
Master control connection 14 in one multi-way valve 13, the master control of the first multi-way valve 13 join position work in 14.Transfer pressure adjusts the speed switching valve
The 11st hydraulic fluid port G11 and the 12nd hydraulic fluid port G12 the indirect first external executing agency 17；
Transfer pressure adjusts the speed the indirect first external execution machine of the 11st hydraulic fluid port G11 and the 12nd hydraulic fluid port G12 of switching valve
When structure 17, transfer pressure adjusts the speed the right position work of the first solenoid valve 1 in switching valve, the left position work of second solenoid valve 2, third electricity
The left position work of magnet valve 3, left position/right position of the 4th solenoid valve 4 work, hydraulic oil flow direction: oil pump --- the first check valve 5 ---
Oil inlet p1 --- the second working hole b1 --- third check valve 7 --- the tenth hydraulic fluid port of the first solenoid valve 1 of first solenoid valve 1
G10 --- the oil inlet p of master control connection 14 in the first multi-way valve 13 --- oil outlet of master control connection 14 in the first multi-way valve 13
V --- the 9th hydraulic fluid port G9 --- the oil inlet p2 of second solenoid valve 2 --- the first working hole a2 of second solenoid valve 2 --- the 4th
--- 12 --- the oil inlet p3 of third solenoid valve 3 --- first working holes of third solenoid valve 3 of fixed damping of check valve 8
A3 --- the oil inlet p4 of the 4th solenoid valve 4 --- the first working hole a4 --- the 11st hydraulic fluid port G11 --- of the 4th solenoid valve 4
First external executing agency 17 --- the second working hole b4 --- the oil return opening t4 of the 4th solenoid valve 4 --- of the 4th solenoid valve 4
7th hydraulic fluid port G7 --- fuel tank.
Relief circuit is as follows: oil pump --- the first check valve 5 --- the oil inlet p1 of the first solenoid valve --- first electromagnetism
The second working hole b1 --- third check valve 7 --- the tenth hydraulic fluid port G10 --- master control connection 14 in first multi-way valve 13 of valve 1
Oil inlet p --- 2 oil inlet of oil outlet V --- the 9th hydraulic fluid port G9 --- second solenoid valve that master control joins in the first multi-way valve 13
P2 --- second solenoid valve 2 oil return opening t2 --- the 7th hydraulic fluid port G7 --- fuel tank.
Under the pressure classification, system pressure is limited by the second overflow valve 11, and set pressure 6MPa, secondary pressure is by first
Master control connection 14 is followed by main safety valve (overflow valve C) restriction in oil circuit in multi-way valve 13, sets pressure 15MPa.
It should be noted that adjusting fixed damping 12 i.e. regulating flow quantity under second of pressure classification, playing speed-regulating function.
3) the 8th hydraulic fluid port G8 of the third pressure classification, transfer pressure speed regulation switching valve connects the oil inlet of the second multi-way valve 15
Mouthful, the oil recirculating port connecting tank of the second multi-way valve 15 controls corresponding executive component by the second multi-way valve 15.
Transfer pressure adjusts the speed the right position work of the first solenoid valve 1 in switching valve, the left position work of second solenoid valve 2, third
The right position of solenoid valve 3 works.Hydraulic oil flow direction: oil pump --- the first check valve 5 --- the oil inlet p1 of the first solenoid valve 1 ---
The second working hole b1 --- third check valve 7 --- the tenth hydraulic fluid port G10 --- master control in the first multi-way valve 13 of first solenoid valve 1
Oil inlet --- oil outlet V --- the 9th hydraulic fluid port G9 --- second electromagnetism of master control connection 14 in the first multi-way valve 13 of system connection 14
Oil inlet p2 --- the first working hole a2 of second solenoid valve 2 --- the 4th check valve 8 --- fixed damping 12 --- the of valve 2
Oil inlet p3 --- the second working hole b3 --- the 8th hydraulic fluid port G8 --- second multi-way valve of third solenoid valve 3 of three solenoid valves 3
15 oil inlet --- the second external executing agency --- oil return opening of the second multi-way valve 15 --- fuel tank.
Wherein the second external executing agency is that the second multi-way valve 15 is followed by the executing agency in oil circuit.
Relief circuit is as follows: oil pump --- the first check valve 5 --- the oil inlet p1 of the first solenoid valve 1 --- first electromagnetism
The second working hole b1 --- third check valve 7 --- the tenth hydraulic fluid port G10 --- master control connection 14 in first multi-way valve 13 of valve 1
Oil inlet --- in the first multi-way valve 13 master control connection 14 oil outlet V --- the 9th hydraulic fluid port G9 --- second solenoid valve 2 into
Hydraulic fluid port p2 --- the first working hole a2 of second solenoid valve 2 --- the 4th check valve 8 --- fixed damping 12 --- third electromagnetism
Valve 3 oil inlet p3 --- the second working hole b3 --- the 8th hydraulic fluid port G8 --- second multi-way valve 15 of third solenoid valve 3 into
Hydraulic fluid port --- oil return opening of the second multi-way valve 15 --- fuel tank.
Under the pressure classification, system pressure is defined by the second overflow valve 11, and the second overflow valve is set up in the present embodiment
11 pressure are 5MPa；Secondary pressure is limited by main safety valve (overflow valve C) after master control connection 14 in the first multi-way valve 13, such as preceding institute
It states, the main safety valve is set up in the present embodiment and limits oil pressure as 15MPa.
4) the 8th hydraulic fluid port G8 of the 4th kind of pressure classification, transfer pressure speed regulation switching valve connects the oil inlet of the second multi-way valve 15
Mouthful, the oil recirculating port connecting tank of the second multi-way valve 15 controls corresponding executive component by the second multi-way valve 15；
Transfer pressure adjusts the speed the left position work of the first solenoid valve 1 of switching valve, hydraulic oil flow direction: oil pump --- and first is unidirectional
--- the oil inlet p1 of the first solenoid valve 1 --- the first working hole a1 --- second one-way valve 6 --- of the first solenoid valve 1 of valve 5
--- oil inlet of the second multi-way valve 15 --- external second executing agency 17 --- second multi-way valve 15 returns 8th hydraulic fluid port G8
Hydraulic fluid port --- fuel tank.
Relief circuit is as follows: oil pump --- the first check valve 5 --- the oil inlet p1 of the first solenoid valve --- first electromagnetism
The first working hole a1 --- --- the 8th hydraulic fluid port G8 --- oil inlet of the second multi-way valve 15 --- of second one-way valve 6 of valve 1
Oil return opening --- the fuel tank of two multi-way valves 15.
Under the pressure classification, system pressure is followed by oil circuit by the second multi-way valve 15 and determines, principal pressure is by the second multi-way valve 15
It is followed by main overflow valve D to determine, limits the set pressure of main overflow valve D as 22MPa in the present embodiment.Secondary safe pressure is by first
Overflow valve 10 is determining, set pressure 24MPa.
5) the 8th hydraulic fluid port G8 of the 5th kind of pressure classification, transfer pressure speed regulation switching valve connects the oil inlet of the second multi-way valve 15
Mouthful, the oil recirculating port connecting tank of the second multi-way valve 15 controls corresponding executive component by the second multi-way valve 15；
The right position work of first solenoid valve 1, the right position of second solenoid valve 2 work, and hydraulic oil flow direction: oil pump --- first is single
--- the oil inlet p1 of the first solenoid valve 1 --- the second working hole b1 of the first solenoid valve 1 --- third check valve to valve 5
7 --- the tenth hydraulic fluid port G10 --- master control joins 14 oil inlet p in the first multi-way valve 13 --- master control connection in the first multi-way valve 13
14 oil outlet V --- the 9th hydraulic fluid port G9 --- the oil inlet p2 of second solenoid valve 2 --- second working hole of second solenoid valve 2
B2 --- the 5th check valve 9 --- the 8th hydraulic fluid port G8 --- oil inlet of the second multi-way valve 15 --- external second executing agency
17 --- oil return opening of the second multi-way valve 15 --- fuel tanks.
Relief circuit is as follows: oil pump --- the first check valve 5 --- the oil inlet p1 of the first solenoid valve 1 --- first electromagnetism
Valve 1 the second working hole b1 --- third check valve 7 --- the tenth hydraulic fluid port G10 --- in the first multi-way valve 13 master control connection 14 into
--- master control joins 14 oil outlet V --- the 9th hydraulic fluid port G9 --- oil inlet of second solenoid valve 2 to hydraulic fluid port p in the first multi-way valve 13
P2 --- the second working hole b2 of second solenoid valve 2 --- the 5th check valve 9 --- the 8th hydraulic fluid port G8 --- second multi-way valve 15
Oil inlet --- oil return opening of the second multi-way valve 15 --- fuel tank.
Under the pressure classification, system pressure is followed by main safety valve (overflow valve C) by master control connection 14 in the first multi-way valve 13
It determines, limits the set pressure of the main safety valve as 15MPa in the present embodiment；Secondary pressure is by main overflow after the second multi-way valve 15
Valve D is limited, set pressure 22MPa.
Claims (1)
1. transfer pressure adjusts the speed switching valve, it is characterised in that: including G1-G12 totally 12 hydraulic fluid ports, the first solenoid valve, the second electromagnetism
Valve, third solenoid valve, the 4th solenoid valve, the first check valve, second one-way valve, third check valve, the 4th check valve, the 5th are unidirectionally
Valve, the first overflow valve, the second overflow valve and fixed damping；First hydraulic fluid port G1 is communicated with the second hydraulic fluid port G2, third hydraulic fluid port G3, as
The oil inlet of transfer pressure speed regulation switching valve；First hydraulic fluid port G1 connects oil pump, by the first check valve as primary input hydraulic fluid port；Second
Hydraulic fluid port G2 connects pressure gauge for measuring pressure or pressure switch or pressure sensor, third hydraulic fluid port G3 connect other power oils
Mouthful；4th hydraulic fluid port G4 is drain tap, and the 5th hydraulic fluid port G5 is emergency power hydraulic fluid port, can both do oil return with and also used with oil inlet；6th
Hydraulic fluid port G6 and the 7th hydraulic fluid port G7 is connected, as oil return opening；8th hydraulic fluid port G8 is used to connect the oil inlet of the second multi-way valve, the 9th hydraulic fluid port
G9 is used to connect one of oil outlet that master control joins in the first multi-way valve, and the tenth hydraulic fluid port G10 is total in the first multi-way valve for connecing
Control the oil inlet of connection；11st hydraulic fluid port G11 and the 12nd hydraulic fluid port G12 connect executive component；
First solenoid valve is two-position four way change valve, and oil inlet p1 meets the first hydraulic fluid port G1, and oil return opening t1 meets the 4th hydraulic fluid port G4, the
One working hole a1 meets the 8th hydraulic fluid port G8 through second one-way valve, and the second working hole b1 meets the tenth hydraulic fluid port G10 through third check valve；Second
Solenoid valve is three position four-way electromagnetic valve, and oil inlet p2 meets the 9th hydraulic fluid port G9, and oil return opening t2 connects the 6th hydraulic fluid port G6 or the 7th hydraulic fluid port
G7, the first working hole a2 successively meet the second overflow valve oil inlet, the 4th check valve oil inlet, fixed damping and the 5th hydraulic fluid port G5,
5th hydraulic fluid port G5 is as emergency power mouth；Second actuator port b2 successively meets the 5th check valve oil inlet and the 8th hydraulic fluid port G8；The
The oil return of two overflow valves is connected to the 6th hydraulic fluid port G6 or the 7th hydraulic fluid port G7；Third solenoid valve is two-position three way magnetic valve, oil inlet
P3 meets the 5th hydraulic fluid port G5, and the first actuator port a3 meets the oil inlet p4 of the 4th solenoid valve 4, and the second actuator port b3 connects the 8th hydraulic fluid port
G8；4th solenoid valve is three position four-way electromagnetic valve, and oil return opening t4 connects the 6th hydraulic fluid port G6 or the 7th hydraulic fluid port G7, the first actuator port
A4 meets the 11st hydraulic fluid port G11, and the second actuator port b4 meets the 12nd hydraulic fluid port G12；First is connected between oil inlet and oil return opening
Overflow valve is to limit system pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820773732.8U CN208364511U (en) | 2018-05-23 | 2018-05-23 | Transfer pressure adjusts the speed switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820773732.8U CN208364511U (en) | 2018-05-23 | 2018-05-23 | Transfer pressure adjusts the speed switching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364511U true CN208364511U (en) | 2019-01-11 |
Family
ID=64935593
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820773732.8U Expired - Fee Related CN208364511U (en) | 2018-05-23 | 2018-05-23 | Transfer pressure adjusts the speed switching valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN208364511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973455A (en) * | 2019-03-20 | 2019-07-05 | 中煤科工集团重庆研究院有限公司 | A kind of accurate speed-regulating hydraulic system of multistage mixed connection |
-
2018
- 2018-05-23 CN CN201820773732.8U patent/CN208364511U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973455A (en) * | 2019-03-20 | 2019-07-05 | 中煤科工集团重庆研究院有限公司 | A kind of accurate speed-regulating hydraulic system of multistage mixed connection |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 |