CN216842426U - Hydraulic control reversing valve with pilot oil way - Google Patents
Hydraulic control reversing valve with pilot oil way Download PDFInfo
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- CN216842426U CN216842426U CN202123034616.5U CN202123034616U CN216842426U CN 216842426 U CN216842426 U CN 216842426U CN 202123034616 U CN202123034616 U CN 202123034616U CN 216842426 U CN216842426 U CN 216842426U
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Abstract
The utility model discloses a from liquid accuse switching-over valve of taking guide's oil circuit, including first liquid accuse switching-over valve, manual switching-over valve, second liquid accuse switching-over valve and hydro-cylinder. One side of the first hydraulic control reversing valve is connected with a pipe manifold, and the other side of the first hydraulic control reversing valve is provided with a connecting pipe manifold. One side of the manual reversing valve is provided with a first pipeline, a fifth pipeline and a sixth pipeline, and the other side of the manual reversing valve is provided with a second pipeline, a third pipeline and a fourth pipeline. The first pipeline is connected with the interface manifold. An A2 outlet pipeline is arranged between the first pilot-controlled reversing valve and the first pipeline. The second pipeline is externally connected with an oil tank. And the fifth pipeline and the first pipeline, the sixth pipeline and the second pipeline, and the third pipeline and the fourth pipeline are connected with the second hydraulic control reversing valve. And a pipeline connected with the oil cylinder is arranged on one side of the second hydraulic control reversing valve, and a pipeline connected with the first hydraulic control reversing valve and an oil cylinder outlet manifold is arranged on the other side of the second hydraulic control reversing valve. Compared with the prior art, the beneficial effects of the utility model are that: the system is simple, the operation is convenient, and the maintenance cost is reduced.
Description
Technical Field
The utility model relates to a hydraulic circuit field, concretely relates to from liquid accuse switching-over valve of taking guide's oil circuit.
Background
In the prior art, the hydraulic control pilot pressure of the hydraulic control reversing valve needs a pilot oil source to control the reversing of a valve core, and a pump or an oil source system with an energy accumulator needs to be added independently for providing the pilot oil source. Making the system complex, cumbersome to overhaul when malfunctioning and increasing costs.
SUMMERY OF THE UTILITY MODEL
The utility model provides a from liquid accuse switching-over valve of taking guide's oil circuit, its characteristics are simple for the system, convenient operation reduces cost of maintenance.
In order to achieve the above purpose, the utility model provides a following technical scheme: a pilot operated directional control valve with a pilot oil path comprises a first pilot operated directional control valve, a manual directional control valve, a second pilot operated directional control valve and an oil cylinder.
The first hydraulic control reversing valve is divided into an A1 area and an A2 area by a partition plate; a spring is arranged between the partition plate and the bottom of the A2 area;
the manual reversing valve is internally provided with a B1 area, a B2 area and a B3 area.
And a C1 area, a C2 area and a C3 area are arranged in the second hydraulic control reversing valve.
Three connecting channels are arranged in the B1 area, the B2 area and the B3 area.
Two connecting channels are arranged in the C1 area, the C2 area and the C3 area.
And an interface manifold is connected outside the A1 area. The interface manifold is connected with the hydraulic pump interface.
And a connecting manifold is arranged on one side of the first hydraulic control reversing valve. The connecting manifold is connected with the hydraulic oil tank interface.
And a first pipeline, a fifth pipeline and a sixth pipeline are arranged on one side of the manual reversing valve. The first pipeline is connected with the interface manifold. And a first throttle valve and a first pressure reducing valve are arranged on the first pipeline.
An A2 outlet pipeline is arranged between the A2 area and the first pipeline.
And a second pipeline, a third pipeline and a fourth pipeline are arranged on the other side of the manual reversing valve. And an oil tank is connected outside the second pipeline.
The fifth pipeline is connected with the first pipeline.
The sixth pipeline is connected with the second pipeline.
The third pipeline and the fourth pipeline are respectively connected with a C1 area and a C3 area.
And an oil cylinder inlet manifold and an oil cylinder outlet manifold are arranged on one side of the second hydraulic control reversing valve. And the oil cylinder inlet manifold and the oil cylinder outlet manifold are connected with the oil cylinder.
And a seventh pipeline and an eighth pipeline are arranged on the other side of the second hydraulic control reversing valve. And the seventh pipeline and the eighth pipeline are respectively connected with the first hydraulic control reversing valve and the oil cylinder outlet manifold.
Preferably, a check valve is arranged on the fifth pipeline.
Preferably, a second pressure reducing valve is arranged between the interface manifold and the outlet manifold.
Preferably, a check valve and a second throttling valve are arranged on the outlet pipeline of the A2. The check valve is connected in parallel with the second throttle valve.
Preferably, the junction of the a2 outlet line and the first line is between the first choke and the first pressure reducing valve.
Compared with the prior art, the beneficial effects of the utility model are as follows: the pipeline design of the whole structure is optimized, so that the structural design that a pump or an energy accumulator is added independently to a pilot oil source is avoided, the equipment cost is reduced, and the maintenance workload is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of the present invention in a standby state.
Fig. 3 is a schematic structural diagram of the oil cylinder of the present invention when it is extended out.
Fig. 4 is a schematic structural diagram of the oil cylinder of the present invention during retraction.
The hydraulic control system comprises a hydraulic pump interface 1, a hydraulic oil tank interface 2, a first hydraulic control reversing valve 3, an A1 area 4, an A2 area 5, an interface manifold 6, a connecting manifold 7, an outlet manifold 8, a first pipeline 9, a first throttle valve 10, a first pressure reducing valve 11, an A2 outlet pipeline 12, a one-way valve 13, a second throttle valve 14, a second pressure reducing valve 15, a manual reversing valve 16, a B1 area 17, a B2 area 18, a B3 area 19, a second pipeline 20, a third pipeline 21, a fourth pipeline 22, a second hydraulic control reversing valve 23, a C1 area 24, a C2 area 25, a C3 area 26, a cylinder inlet manifold 27, a cylinder outlet manifold 28, a cylinder 29, a fifth pipeline 30, a sixth pipeline 31, a seventh pipeline 32 and an eighth pipeline 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A pilot operated directional control valve with a pilot oil path comprises a first pilot operated directional control valve 3, a manual directional control valve 16, a second pilot operated directional control valve 23 and an oil cylinder 29.
The first hydraulic control reversing valve 3 is divided into an A1 area 4 and an A2 area by a partition plate); a spring is arranged between the partition plate and the bottom of the A2 area 5;
the manual reversing valve 16 is internally provided with a B1 area 17, a B2 area 18 and a B3 area 19.
The second hydraulic control directional valve 23 is internally provided with a C1 area 24, a C2 area 25 and a C3 area 26.
Three connecting channels are arranged in the B1 area 17, the B2 area 18 and the B3 area 19.
Two connecting channels are arranged in the C1 area 24, the C2 area 25 and the C3 area 26.
And an interface manifold 6 is connected outside the A1 area 4. The interface manifold 6 is connected to the hydraulic pump interface 1.
And a connecting manifold 7 is arranged on one side of the first hydraulic control reversing valve 3. The connecting manifold 7 is connected with the hydraulic oil tank interface 2.
And a first pipeline 9, a fifth pipeline 30 and a sixth pipeline 31 are arranged on one side of the manual reversing valve 16. The first line 9 is connected to the connection manifold 6. The first pipeline 9 is provided with a first throttle valve 10 and a first pressure reducing valve 11.
An a2 outlet line 12 is provided between the a2 zone 5 and the first line 9.
The other side of the manual reversing valve 16 is provided with a second pipeline 20, a third pipeline 21 and a fourth pipeline 22. An oil tank is connected outside the second pipeline 20.
The fifth line 30 is connected to the first line 9.
The sixth line 31 is connected to the second line 20.
The third line 21 and the fourth line 22 are connected to a C1 block 24 and a C3 block 26, respectively.
And a cylinder inlet manifold 27 and a cylinder outlet manifold 28 are arranged on one side of the second hydraulic control reversing valve 23. The cylinder inlet manifold 27 and cylinder outlet manifold 28 are connected to a cylinder 29.
The other side of the second hydraulic control direction valve 23 is provided with a seventh pipeline 32 and an eighth pipeline 33. The seventh pipeline 32 and the eighth pipeline 33 are respectively connected with the first pilot-controlled directional control valve 3 and the cylinder outlet manifold 28.
The fifth pipeline 30 is provided with a check valve 13.
A second pressure relief valve 15 is provided between the interface manifold 6 and the outlet manifold 8.
The A2 outlet pipeline 12 is provided with a check valve 13 and a second throttling valve 14. The check valve 13 and the second throttle valve 14 are connected in parallel.
The junction of the a2 outlet line 12 and the first line 9 is located between the first choke 10 and the first pressure reducing valve 11.
The working principle is as follows:
when the oil cylinder 29 is in a standby state, referring to fig. 2, hydraulic oil of the hydraulic pump enters the interface manifold 6 through the hydraulic pump interface 1, a part of the oil enters the manual directional valve 16 through the first throttle valve 10, the first pressure reducing valve 11 and the first pipeline 9, at this time, the manual directional valve 16 is controlled to enable the pipeline connections of the manual directional valve 16 to be located in the B2 area 18, the first pipeline 9 and the second pipeline 20 are enabled to be communicated, and the oil enters the oil tank through the second pipeline 20. The pressure on the left side of the first throttle valve 10 can be continuously increased under the condition that the hydraulic pump interface 1 continuously supplies oil, the pressure oil enters the A1 area 4 of the first hydraulic control reversing valve 3, overcomes the elastic force of a spring in the first hydraulic control reversing valve 3, pushes a partition plate in the first hydraulic control reversing valve 3 to move downwards, so that the A1 area is communicated with the connecting manifold 7, and the oil is reversely discharged from the hydraulic oil tank interface 2 through the outlet manifold 8; meanwhile, the oil in the A2 area 5 enters the oil tank through the A2 outlet pipeline 12, the first pipeline 9 and the second pipeline 20.
In this state, all hydraulic oil enters the oil tank through the first hydraulic control directional control valve 3, low-pressure unloading is realized, and energy loss is reduced. The manual reversing valve 16 is used as a main control valve, and the reversing of the second hydraulic control reversing valve 23 is controlled by reversing the manual reversing valve 16, so that the action of the actuating mechanism is realized.
When the oil cylinder 29 is extended, as shown in fig. 3, the manual directional control valve 16 is controlled so that the pipe connections are located in the B3 area 19; the fifth pipeline 30 and the third pipeline 21 are communicated; the oil liquid enters a C1 area 24 in a second hydraulic control reversing valve 23 through a first throttle valve 10, a first reducing valve 11, a first pipeline 9, a fifth pipeline 30 and a third pipeline 21; and through the cylinder outlet manifold 28 into the cylinder 29, thereby pushing the cylinder 29 out. The oil in the oil cylinder 29 is reversely discharged to the hydraulic oil tank interface 2 through the oil cylinder inlet manifold 27 and the eighth pipeline 33.
When the cylinder 29 performs the retracting operation, as shown in fig. 4, the manual direction valve 16 is controlled such that the line connections are located in the B1 area 17, and the fifth line 30 and the fourth line 22 are connected; the oil passes through the first throttle valve 10, the first pressure reducing valve 11, the first line 9, the fifth line 30, the fourth line 22 into the C3 area 26 in the second hydraulic directional valve 23 and into the cylinder 29 through the cylinder inlet manifold 27, thereby pushing the cylinder 29 to retract. The oil in the oil cylinder 29 is reversely discharged to the hydraulic oil tank interface 2 through the oil cylinder outlet manifold 28 and the eighth pipeline 33.
The first throttle 10 is used for buffering hydraulic oil transferred by a hydraulic pump through the hydraulic pump interface 1 in a loop, and the one-way valve 13 and the second throttle 14 are used for slowly unloading to avoid hydraulic shock. The function of the first pressure reducing valve 11 and the second pressure reducing valve 15 is to overflow when the system pressure exceeds the set pressure of the valves, for protecting other elements in the system from high pressure damage. The first hydraulic control directional control valve 3 is used for loading, unloading and providing pilot pressure, and the pilot pressure is provided mainly by the fact that hydraulic oil can continue to supply oil to the system only by overcoming the spring force in the first hydraulic control directional control valve 3.
Claims (5)
1. The utility model provides a hydraulic control switching-over valve from taking guide's oil circuit which characterized in that: comprises a first hydraulic control reversing valve (3), a manual reversing valve (16), a second hydraulic control reversing valve (23) and an oil cylinder (29);
the first hydraulic control reversing valve (3) is divided into an A1 area (4) and an A2 area (5) by a partition plate; a spring is arranged between the partition plate and the bottom of the A2 area (5);
a B1 area (17), a B2 area (18) and a B3 area (19) are arranged in the manual reversing valve (16);
a C1 area (24), a C2 area (25) and a C3 area (26) are arranged in the second hydraulic control reversing valve (23);
three connecting channels are arranged in the B1 area (17), the B2 area (18) and the B3 area (19);
two connecting channels are arranged in the C1 area (24), the C2 area (25) and the C3 area (26);
an interface manifold (6) is connected outside the A1 area (4); the interface manifold (6) is connected with the hydraulic pump interface (1);
a connecting manifold (7) is arranged on one side of the first hydraulic control reversing valve (3); the connecting manifold (7) is connected with the hydraulic oil tank interface (2);
a first pipeline (9), a fifth pipeline (30) and a sixth pipeline (31) are arranged on one side of the manual reversing valve (16); the first pipeline (9) is connected with the interface manifold (6); a first throttle valve (10) and a first pressure reducing valve (11) are arranged on the first pipeline (9);
an A2 outlet pipeline (12) is arranged between the A2 area (5) and the first pipeline (9);
a second pipeline (20), a third pipeline (21) and a fourth pipeline (22) are arranged on the other side of the manual reversing valve (16); an oil tank is connected outside the second pipeline (20);
the fifth pipeline (30) is connected with the first pipeline (9);
the sixth pipeline (31) is connected with the second pipeline (20);
the third line (21) and the fourth line (22) are connected to the C1 zone (24) and the C3 zone (26), respectively;
an oil cylinder inlet manifold (27) and an oil cylinder outlet manifold (28) are arranged on one side of the second hydraulic control reversing valve (23); the oil cylinder inlet manifold (27) and the oil cylinder outlet manifold (28) are connected with an oil cylinder (29);
a seventh pipeline (32) and an eighth pipeline (33) are arranged on the other side of the second hydraulic control reversing valve (23); and the seventh pipeline (32) and the eighth pipeline (33) are respectively connected with the first hydraulic control reversing valve (3) and the oil cylinder outlet manifold (28).
2. The pilot-operated directional control valve with the pilot oil path as set forth in claim 1, wherein: and a check valve (13) is arranged on the fifth pipeline (30).
3. The pilot-operated directional control valve with the pilot oil path as set forth in claim 1, wherein: and a second pressure reducing valve (15) is arranged between the interface manifold (6) and the outlet manifold (8).
4. The pilot-operated directional control valve with the pilot oil path as set forth in claim 1, wherein: a check valve (13) and a second throttling valve (14) are arranged on the A2 outlet pipeline (12); the check valve (13) and the second throttle valve (14) are connected in parallel.
5. The pilot-operated directional control valve with the pilot oil path as set forth in claim 1, wherein: the junction of the A2 outlet line (12) and the first line (9) is located between the first throttle valve (10) and the first pressure reducing valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123034616.5U CN216842426U (en) | 2021-12-06 | 2021-12-06 | Hydraulic control reversing valve with pilot oil way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123034616.5U CN216842426U (en) | 2021-12-06 | 2021-12-06 | Hydraulic control reversing valve with pilot oil way |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216842426U true CN216842426U (en) | 2022-06-28 |
Family
ID=82106812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123034616.5U Active CN216842426U (en) | 2021-12-06 | 2021-12-06 | Hydraulic control reversing valve with pilot oil way |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216842426U (en) |
-
2021
- 2021-12-06 CN CN202123034616.5U patent/CN216842426U/en active Active
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