CN217080943U - Novel electric control hydraulic transmission system valve group - Google Patents
Novel electric control hydraulic transmission system valve group Download PDFInfo
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- CN217080943U CN217080943U CN202220936380.XU CN202220936380U CN217080943U CN 217080943 U CN217080943 U CN 217080943U CN 202220936380 U CN202220936380 U CN 202220936380U CN 217080943 U CN217080943 U CN 217080943U
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Abstract
A novel electric control hydraulic transmission system valve bank relates to the field of hydraulic systems of agricultural machinery and comprises a valve block, wherein a valve bank oil inlet, a valve bank oil return port, four rodless cavity interfaces and four rod cavity interfaces are arranged on the valve block; the valve block is connected with a first three-position four-way reversing valve and three groups of second three-position four-way reversing valves; the oil inlet of the first three-position four-way reversing valve is communicated with the oil inlet of the valve bank after being connected in parallel with the oil inlets of the three groups of second three-position four-way reversing valves; the oil return port of the first three-position four-way reversing valve is connected with the oil return ports of the three groups of second three-position four-way reversing valves in parallel and then communicated with the oil return port of the valve group; two working oil ports of the first three-position four-way reversing valve are connected with a rodless cavity interface and a rod cavity interface through hydraulic locks; first working oil ports of the three groups of second three-position four-way reversing valves are connected with the first throttling valve, and second working oil ports of the three groups of second three-position four-way reversing valves are connected with the second throttling valve. The utility model discloses automatic control, stable performance.
Description
Technical Field
The utility model relates to a hydraulic system's of agricultural machine field.
Background
The hydraulic system of agricultural machinery (such as a sprayer) has the following defects: 1. manual operation is required, and automatic control cannot be realized. 2. The transmission precision is insufficient, and the reaction is slow. 3. The pressure maintaining performance is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide a novel automatically controlled hydraulic transmission system valves of automatic control, stable performance.
The purpose of the utility model is realized like this: the novel electric control hydraulic transmission system valve bank comprises a valve block, wherein a valve bank oil inlet, a valve bank oil return port, four rodless cavity interfaces and four rod cavity interfaces are arranged on the valve block; the valve block is connected with a group of first three-position four-way reversing valves and three groups of second three-position four-way reversing valves; the oil inlet of the first three-position four-way reversing valve is connected with the oil inlets of the three groups of second three-position four-way reversing valves in parallel and then communicated with the oil inlet of the valve group; the oil return port of the first three-position four-way reversing valve is connected with the oil return ports of the three groups of second three-position four-way reversing valves in parallel and then communicated with the oil return port of the valve group; two working oil ports of the first three-position four-way reversing valve are connected with one rodless cavity interface and one rod cavity interface through a hydraulic lock; first working oil ports of the three groups of second three-position four-way reversing valves are connected with first throttling valves, the three first throttling valves are correspondingly connected with the other three rodless cavity connectors one by one, second working oil ports of the three groups of second three-position four-way reversing valves are connected with second throttling valves, and the three second throttling valves are correspondingly connected with the other three rod cavity connectors one by one.
The utility model discloses be connected the electromagnetism overflow valve between valves oil inlet and valves oil return opening, adjust valves system pressure.
The hydraulic lock of the utility model comprises a first hydraulic control one-way valve and a second hydraulic control one-way valve, wherein the oil inlet of the first hydraulic control one-way valve is connected with the first working oil port of the first three-position four-way reversing valve, and the oil inlet of the second hydraulic control one-way valve is connected with the second working oil port of the first three-position four-way reversing valve; the oil outlet of the first hydraulic control one-way valve is connected with the rodless cavity interface, and the oil outlet of the second hydraulic control one-way valve is connected with the rod cavity interface; and a control port of the first hydraulic control one-way valve is connected with a second working oil port of the first three-position four-way reversing valve, and a control port of the second hydraulic control one-way valve is connected with a first working oil port of the first three-position four-way reversing valve.
The utility model discloses a first tribit four-way reversing valve and second tribit four-way reversing valve are tribit four-way electromagnetic directional valve.
When the four-cylinder four-way valve works, an oil inlet of the valve group is connected with an oil tank through an oil pump, oil return ports of the valve group are connected with the oil tank, rodless cavity oil ports of the four oil cylinders are respectively connected with four rodless cavity interfaces of the valve block in a one-to-one correspondence mode, and rod cavity oil ports of the four oil cylinders are respectively connected with four rod cavity interfaces of the valve block in a one-to-one correspondence mode.
The utility model has the advantages that:
1. the automation degree is high.
2. The hydraulic lock has the function of maintaining pressure midway. Meanwhile, when the middle position is reversed, the impact is reduced.
3. The three groups of first throttle valves and second throttle valves can be used for bidirectional speed regulation, so that the oil cylinder is controlled to slowly stretch.
4. The three-position four-way reversing valve controls the oil cylinder to work back and forth or up and down.
Drawings
Fig. 1 is a hydraulic schematic diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a bottom view of fig. 2.
Fig. 5 is a right side view of fig. 2.
Fig. 6 is a schematic diagram of the application of the present invention.
In the figure, a valve block 1, a valve group 2 oil inlet, a two-position two-way electromagnetic valve 3, an electromagnetic overflow valve 4, a valve group 5 oil return port, a second three-position four-way electromagnetic directional valve 6, a first three-position four-way electromagnetic directional valve 7, a first hydraulic control one-way valve 8, a rodless cavity interface 9, a second hydraulic control one-way valve 10, a rod cavity interface 11, a first throttle valve 12, a second throttle valve 13, an oil pump 14, an oil tank 15 and an oil cylinder 16 are arranged.
Detailed Description
As shown in fig. 1 to 5, the novel electrically controlled hydraulic transmission system valve bank comprises a valve block 1, wherein a valve bank oil inlet 2, a valve bank oil return opening 5, four rodless cavity interfaces 9 and four rod cavity interfaces 11 are arranged on the valve block 1.
A group of first three-position four-way electromagnetic reversing valves 7 and a group of second three-position four-way electromagnetic reversing valves 6 are connected to the valve block 1. An oil inlet of the first three-position four-way electromagnetic reversing valve 7 and oil inlets of the three groups of second three-position four-way electromagnetic reversing valves 6 are connected in parallel and then communicated with the valve group oil inlet 2. The oil return port of the first three-position four-way electromagnetic reversing valve 7 and the oil return ports of the three groups of second three-position four-way electromagnetic reversing valves 6 are connected in parallel and then communicated with the valve group oil return port 5. An electromagnetic overflow valve 4 is connected between the valve bank oil inlet 2 and the valve bank oil return opening 5, the oil outlet of the electromagnetic overflow valve 4 is connected with a two-position two-way electromagnetic valve 3, and the oil outlet of the two-position two-way electromagnetic valve 3 is connected with the valve bank oil return opening 5.
The hydraulic lock comprises a first hydraulic control one-way valve 8 and a second hydraulic control one-way valve 10, an oil inlet of the first hydraulic control one-way valve 8 is connected with a first working oil port of the first three-position four-way electromagnetic reversing valve 7, and an oil inlet of the second hydraulic control one-way valve 10 is connected with a second working oil port of the first three-position four-way electromagnetic reversing valve 7. The oil outlet of the first hydraulic control one-way valve 8 is connected with one of the rodless cavity interfaces 9, and the oil outlet of the second hydraulic control one-way valve 10 is connected with one of the rod cavity interfaces 11. A control port of the first hydraulic control one-way valve 8 is connected with a second working oil port of the first three-position four-way electromagnetic reversing valve 7, and a control port of the second hydraulic control one-way valve 10 is connected with a first working oil port of the first three-position four-way electromagnetic reversing valve 7.
First working oil ports of the three groups of second three-position four-way electromagnetic directional valves 6 are connected with first throttle valves 12, the three first throttle valves 12 are correspondingly connected with the other three rodless cavity interfaces 9 one by one, second working oil ports of the three groups of second three-position four-way electromagnetic directional valves 6 are connected with second throttle valves 13, and the three second throttle valves 13 are correspondingly connected with the other three rod cavity interfaces 11 one by one.
As shown in fig. 6, the valve group oil inlet 2 is connected with an oil tank 15 through an oil pump 14, the valve group oil return port 5 is connected with the oil tank 15, rodless cavity oil ports of four oil cylinders 16 are respectively connected with four rodless cavity interfaces 9 of the valve block 1 in a one-to-one correspondence manner, and rod cavity oil ports of the four oil cylinders 16 are respectively connected with four rod cavity interfaces 11 of the valve block 1 in a one-to-one correspondence manner.
The utility model has the characteristics of it is following:
1. all adopt the solenoid valve, convenient control, degree of automation is high.
2. The four three-position four-way electromagnetic directional valves control the oil cylinder 16 to work back and forth or up and down.
3. The first hydraulic control one-way valve 8 and the second hydraulic control one-way valve 10 form hydraulic interlocking and have the function of pressure maintaining in midway. Meanwhile, when the middle position is reversed, the impact is reduced.
4. Three groups of first throttle valves 12 and second throttle valves 13 can be adjusted in speed in two directions, so that the oil cylinder is controlled to stretch slowly. For example, the arm length of the sprayer is 42 meters, and the throttle valve can avoid telescopic impact.
5. In normal operation, the electromagnetic spill valve 4 has two functions: one is that the pressure of the system can be regulated. And secondly, when the system does not need pressure, the pump is ensured to run in an idle running mode, pressure can be relieved, and therefore working efficiency is improved.
Claims (4)
1. Novel automatically controlled hydraulic transmission system valves, characterized by: the valve block is provided with a valve group oil inlet, a valve group oil return port, four rodless cavity interfaces and four rod cavity interfaces; the valve block is connected with a group of first three-position four-way reversing valves and three groups of second three-position four-way reversing valves; the oil inlet of the first three-position four-way reversing valve is connected with the oil inlets of the three groups of second three-position four-way reversing valves in parallel and then communicated with the oil inlet of the valve group; the oil return port of the first three-position four-way reversing valve is connected with the oil return ports of the three groups of second three-position four-way reversing valves in parallel and then communicated with the oil return port of the valve group; two working oil ports of the first three-position four-way reversing valve are connected with one rodless cavity interface and one rod cavity interface through a hydraulic lock; first working oil ports of the three groups of second three-position four-way reversing valves are connected with first throttling valves, the three first throttling valves are correspondingly connected with the other three rodless cavity connectors one by one, second working oil ports of the three groups of second three-position four-way reversing valves are connected with second throttling valves, and the three second throttling valves are correspondingly connected with the other three rod cavity connectors one by one.
2. The novel electrically controlled hydraulic transmission system valve group according to claim 1, wherein: an electromagnetic overflow valve is connected between the valve group oil inlet and the valve group oil return port.
3. The novel electrically controlled hydraulic transmission system valve group according to claim 1, wherein: the hydraulic lock comprises a first hydraulic control one-way valve and a second hydraulic control one-way valve, an oil inlet of the first hydraulic control one-way valve is connected with a first working oil port of the first three-position four-way reversing valve, and an oil inlet of the second hydraulic control one-way valve is connected with a second working oil port of the first three-position four-way reversing valve; the oil outlet of the first hydraulic control one-way valve is connected with the rodless cavity interface, and the oil outlet of the second hydraulic control one-way valve is connected with the rod cavity interface; and a control port of the first hydraulic control one-way valve is connected with a second working oil port of the first three-position four-way reversing valve, and a control port of the second hydraulic control one-way valve is connected with a first working oil port of the first three-position four-way reversing valve.
4. The novel electrically controlled hydraulic transmission system valve group according to claim 1, wherein: and the first three-position four-way reversing valve and the second three-position four-way reversing valve are three-position four-way electromagnetic reversing valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220936380.XU CN217080943U (en) | 2022-04-22 | 2022-04-22 | Novel electric control hydraulic transmission system valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220936380.XU CN217080943U (en) | 2022-04-22 | 2022-04-22 | Novel electric control hydraulic transmission system valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217080943U true CN217080943U (en) | 2022-07-29 |
Family
ID=82502429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220936380.XU Active CN217080943U (en) | 2022-04-22 | 2022-04-22 | Novel electric control hydraulic transmission system valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217080943U (en) |
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2022
- 2022-04-22 CN CN202220936380.XU patent/CN217080943U/en active Active
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