Bidirectional hydraulic lock valve group special for oil cylinder
By designing a dedicated bidirectional hydraulic locking valve assembly for hydraulic cylinders, and adopting a dual-hydraulic control check valve and plate mounting structure, the problem of unstable load when the hydraulic cylinder is in the stopped position is solved, achieving stable pressure maintenance and reducing the risk of external oil pipe bursting.
Patent Information
- Application Number
- CN202520541609.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-26
AI Technical Summary
In existing hydraulic systems, when the cylinder needs to stop when it extends or retracts to a certain position, there is a lack of effective pressure-holding devices, which leads to unstable load.
A bidirectional hydraulic lock valve assembly for hydraulic cylinders was designed. It adopts a dual-hydraulic control check valve structure, controls the flow of hydraulic oil through pilot force to achieve stable pressure holding of the hydraulic cylinder, and adopts a plate-type mounting structure to reduce the connection of external oil pipes.
This achieves stable pressure holding when the cylinder is extended or retracted, reduces load problems caused by external oil pipe rupture, and improves the stability and reliability of the system.
Smart Images
Figure CN223725003U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve group technical field, especially a bidirectional hydraulic lock valve group special for oil cylinder. BACKGROUND
[0002] In the equipment containing oil cylinder, usually install hydraulic one-way valve, hydraulic oil from oil source mouth enters and freely flows into oil cylinder through hydraulic one-way valve, so that oil cylinder reaches certain pressure and starts to stretch out or retract action. Oil source mouth continuously transports hydraulic oil, and oil cylinder continuously acts; when oil cylinder stretches out and retracts to a certain position and needs to stop, often needs oil cylinder to play a pressure maintaining state to load, at this moment, a hydraulic lock valve is needed, and the existing valve group does not have the valve group that can cope with this working condition. CONTENT OF UTILITY MODEL
[0003] The utility model provides a bidirectional hydraulic lock valve group special for oil cylinder in response to the technical problem in the above background art.
[0004] The utility model solves the above technical problem through the following technical scheme:
[0005] The utility model provides a bidirectional hydraulic lock valve group special for oil cylinder. The bidirectional hydraulic lock valve group special for oil cylinder includes the valve body of rectangle, is equipped with the first hydraulic control one-way valve on the left side surface of valve body, is equipped with the second hydraulic control one-way valve on the right side surface of valve body, is equipped with the first oil source mouth and second oil source mouth on the upper side surface of valve body, is installed with first execution mechanism interface, second execution mechanism interface and mounting hole on the front side surface of valve body;
[0006] The first hydraulic control one-way valve includes first oil inlet, first oil outlet and first external interface, the first oil inlet is connected with the first oil source mouth, and the first oil outlet is connected with the first execution mechanism interface.
[0007] The second hydraulic control one-way valve includes second oil inlet, second oil outlet and second external interface, the second oil inlet is connected with the second oil source mouth, and the second oil outlet is connected with the second execution mechanism interface.
[0008] Preferably, the right side surface of the valve body is further provided with a first pilot port, and the first pilot port is connected with the second external interface.
[0009] The second execution mechanism interface is externally connected with an oil cylinder small cavity.
[0010] Preferably, the left side surface of the valve body is further provided with a second pilot port, and the second pilot port is connected with the first external interface.
[0011] The first execution mechanism interface is externally connected with an oil cylinder large cavity.
[0012] Preferably, the mounting holes are a plurality of through holes arranged on the upper side and the lower side of the valve body.
[0013] Preferably, the first hydraulic control check valve and the second hydraulic control check valve are plug-in valves.
[0014] Preferably, the valve body is made of alloy steel.
[0015] The positive progress effect of the utility model lies in: the utility model provides a bidirectional hydraulic lock valve group special for an oil cylinder. The bidirectional hydraulic lock valve group special for the oil cylinder comprises a valve body in a rectangular body, a first hydraulic control check valve is arranged on the left side of the valve body, a second hydraulic control check valve is arranged on the right side of the valve body, a first oil source port and a second oil source port are arranged on the upper side of the valve body, and a first actuating mechanism interface, a second actuating mechanism interface and mounting holes are arranged on the front side of the valve body. The bidirectional hydraulic lock valve group special for the oil cylinder adopts double hydraulic control check valves to realize that when the oil cylinder needs to stop extending or retracting to a certain position, the pilot force is taken from the oil source port of the other hydraulic control check valve, and the hydraulic control check valve is acted on, so that the hydraulic control check valve is opened, and the hydraulic oil flowing back to the oil source port through the hydraulic control check valve is ensured. In addition, the bidirectional hydraulic lock valve group special for the oil cylinder adopts a plate type mounting structure, that is, the bidirectional hydraulic lock valve group is directly attached and buckled on the oil cylinder, the connection of the external oil pipe is reduced, the load problem caused by the sudden burst of the external oil pipe is reduced, and the pressure maintaining effect of the oil cylinder on the load can be better realized. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 The utility model discloses a valve body part structure expansion schematic diagram.
[0017] Figure 2 The utility model discloses a first hydraulic control check valve structure schematic diagram.
[0018] Figure 3 The utility model discloses a second hydraulic control check valve structure schematic diagram.
[0019] Figure 4 The utility model discloses a bidirectional hydraulic lock valve group special for the oil cylinder working principle drawing.
[0020] Legend: 1, valve body;2, first hydraulic control check valve;3, second hydraulic control check valve;4, first oil source port;5, second oil source port;6, first actuating mechanism interface;7, second actuating mechanism interface;8, mounting hole;9, first pilot port;10, second pilot port;21, first oil inlet;22, first oil outlet;23, first external interface;31, second oil inlet;32, second oil outlet;33, second external interface. DETAILED DESCRIPTION
[0021] The utility model is further illustrated below by way of examples, but the utility model is not limited in the scope of the examples.
[0022] Example 1
[0023] As Figures 1-4 shown, the utility model provides a bidirectional hydraulic lock valve group special for oil cylinder. The bidirectional hydraulic lock valve group includes rectangular valve body 1, the left side of valve body 1 is equipped with first hydraulic control check valve 2, the right side of valve body 1 is equipped with second hydraulic control check valve 3, the upper side of valve body 1 is equipped with first oil source port 4 and second oil source port 5, the front side of valve body 1 is installed with first actuator interface 6, second actuator interface 7 and mounting hole 8;Wherein, first hydraulic control check valve 2 includes first oil inlet 21, first oil outlet 22 and first external interface 23, first oil inlet 21 is connected with first oil source port 4, and first oil outlet 22 is connected with first actuator interface 6;Second hydraulic control check valve 3 includes second oil inlet 31, second oil outlet 32 and second external interface 33, second oil inlet 31 is connected with second oil source port 5, and second oil outlet 32 is connected with second actuator interface 7.
[0024] The right side of valve body 1 is also equipped with first pilot port 9, and first pilot port 9 is connected with second external interface 33;Second actuator interface 7 is externally connected with oil cylinder small cavity. The left side of valve body 1 is also equipped with second pilot port 10, and second pilot port 10 is connected with first external interface 23;First actuator interface 6 is externally connected with oil cylinder large cavity.
[0025] Mounting hole 8 is a plurality of through holes arranged on the upper side and the lower side of valve body 1.
[0026] First hydraulic control check valve 2 and second hydraulic control check valve 3 are both plug-in valves.
[0027] Valve body 1 is made of alloy steel.
[0028] The working principle of the utility model is as follows: hydraulic oil enters from first oil source port 4 and second oil source port 5, respectively passes through first hydraulic control check valve 2 and second hydraulic control check valve 3 to first actuator interface 6 and second actuator interface 7, and flows to oil cylinder large cavity and oil cylinder small cavity, so that the oil cylinder performs extension and retraction actions.
[0029] When the oil cylinder is in the extension state: hydraulic oil enters from first oil source port 4, freely flows into first actuator interface 6 to oil cylinder large cavity through first hydraulic control check valve 2, so that the oil cylinder performs extension action. In addition, the hydraulic oil of first oil source port 4 acts on second external interface 33 of second hydraulic control check valve 3 at the same time, so that second hydraulic control check valve 3 is opened to ensure that the return oil from oil cylinder small cavity returns through second actuator interface 7, passes through second hydraulic control check valve 3 to second oil source port 5 and returns to the oil tank.
[0030] When the oil cylinder retraction state: hydraulic oil from the second oil source 5 into, through the second hydraulic control check valve 3 free flow into the second actuator interface 7 to the oil cylinder small cavity, so that the oil cylinder retraction action. In addition, the hydraulic oil of the second oil source 5 will at the same time act on the first hydraulic control check valve 2 of the first interface 23, so that the first hydraulic control check valve 2 opens, to ensure that the oil from the oil cylinder cavity by the first actuator interface 6 backflow, through the first hydraulic control check valve 2 to the first oil source 4 back to the tank.
[0031] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.
Claims
1. A bi-directional hydraulic lock valve group dedicated for an oil cylinder, characterized by, The bidirectional hydraulic lock valve group comprises a rectangular valve body, a first hydraulic control one-way valve is arranged on the left side of the valve body, a second hydraulic control one-way valve is arranged on the right side of the valve body, a first oil source port and a second oil source port are arranged on the upper side of the valve body, and a first actuator interface, a second actuator interface and a mounting hole are arranged on the front side of the valve body; The first hydraulic control one-way valve comprises a first oil inlet, a first oil outlet and a first external interface, the first oil inlet is connected with the first oil source port, and the first oil outlet is connected with the first actuator interface; The second hydraulic control one-way valve comprises a second oil inlet, a second oil outlet and a second external interface, the second oil inlet is connected with the second oil source port, and the second oil outlet is connected with the second actuator interface.
2. The dual hydraulic lock valve group for a cylinder as defined in claim 1, wherein A first pilot port is further arranged on the right side of the valve body, and the first pilot port is connected with the second external interface; An oil cylinder small cavity is externally connected to the second actuator interface.
3. The dual hydraulic lock valve group for a cylinder as defined in claim 1, wherein A second pilot port is further arranged on the left side of the valve body, and the second pilot port is connected with the first external interface; An oil cylinder large cavity is externally connected to the first actuator interface.
4. The dual hydraulic lock valve group for a cylinder as defined in claim 1, wherein The mounting hole is a plurality of through holes arranged on the upper side and the lower side of the valve body.
5. The dual hydraulic lock valve group for a cylinder as defined in claim 1, wherein The first hydraulic control one-way valve and the second hydraulic control one-way valve are plug-in valves.
6. The dual hydraulic lock valve group for a cylinder as defined in claim 1, wherein The valve body is made of alloy steel.