Emergency top cap of hydraulic electromagnetic valve

Abstract

The emergency top cap comprises a top cap body and a top rod, the top cap body is cylindrical, a cylindrical cavity is formed in the top cap body, the lower end of the top cap body is open, a top rod mounting hole is formed in the top of the top cap body, and the diameter of the top rod mounting hole is smaller than that of the cylindrical cavity. The ejector rod mounting hole is a through hole, the inner wall of the ejector rod mounting hole is provided with internal threads, and the ejector rod mounting hole is concentric with the cylindrical cavity of the top cap body; the ejector rod is a screw, and one end of the ejector rod is installed in the ejector rod installation hole in a threaded mode. The emergency top cap is an emergency reset tool used when a hydraulic electromagnetic valve on a rail operation vehicle breaks down, after the emergency top cap is installed on the hydraulic electromagnetic valve, the ejector rod is rotated according to needs, an oil channel in the electromagnetic valve is opened, emergency personnel operate a mechanism needing to be reset to reset, manpower is greatly liberated through the operation, and the operation efficiency is improved. Emergency personnel do not need to hold a tool to abut against a valve element of the hydraulic electromagnetic valve all the time, and the emergency reset efficiency is improved in time.

Description

Technical Field

[0001] This utility model relates to an emergency tool for a solenoid valve, and more specifically, to an emergency cap for a hydraulic solenoid valve. Background Technology

[0002] The JW-4G hydraulic catenary work vehicle is mainly used for the installation, maintenance, and daily inspection of overhead catenary facilities. It mainly includes a lifting and slewing work platform, outriggers, a crane mounted on the vehicle, and tensioning posts. It can be coupled with other vehicle models to cooperate in completing complex emergency repair operations. During long-term use, vehicle malfunctions are inevitable. Especially during construction operations, malfunctions on the railway line will delay the construction schedule. During use, because the crane mounted on the vehicle needs to rotate and lift, the boom of the crane may extend beyond the vehicle's boundaries. If emergency handling and reset mechanisms are not implemented when a malfunction occurs, it will directly threaten the safety of fixed train equipment on both sides of the railway, causing railway traffic accidents and resulting in significant economic losses.

[0003] Common faults of the JW-4G hydraulic overhead contact line maintenance vehicle mainly include electrical and hydraulic equipment failures. A common electrical equipment failure is the hydraulic solenoid valve malfunction. The main function of the hydraulic solenoid valve is to control the flow of hydraulic fluid in the system. By changing the magnetic field through circuit switching, it switches the valve core's working state. When energized, the valve core moves and compresses the spring, connecting the hydraulic circuit. When de-energized, the spring returns to its original position, pushing the valve core to move, disconnecting the hydraulic circuit. When the hydraulic solenoid valve malfunctions, the oil circuit cannot be connected, preventing the overhead contact line maintenance vehicle from switching operations, leading to construction delays. Current solutions... The method is as follows: When a hydraulic solenoid valve malfunctions, the operator uses a screwdriver or wire to press down on the solenoid valve core, causing it to move and change the hydraulic circuit. Then, the operator performs an emergency reset on the overhead contact line maintenance vehicle. Because the hydraulic circuit has high pressure, the operator needs considerable force to press down on the solenoid valve core, and the emergency reset of the overhead contact line maintenance vehicle takes a long time to complete. Often, the emergency reset operation needs to be performed multiple times, which seriously affects the efficiency of emergency work and increases the labor intensity of the operators. Utility Model Content

[0004] This utility model overcomes the shortcomings of the prior art and provides an implementation method for an emergency top cap of a hydraulic solenoid valve, which is expected to solve the problems of low efficiency and high labor intensity when the existing hydraulic solenoid valve is manually switched to operation by the overhead contact line maintenance vehicle when encountering a fault.

[0005] To solve the above-mentioned technical problems, one embodiment of this utility model adopts the following technical solution:

[0006] An emergency cap for a hydraulic solenoid valve includes a cap body and a rod. The cap body is cylindrical with an internal cylindrical cavity. The lower end of the cap body is open, and the top has a rod mounting hole. The diameter of the rod mounting hole is smaller than the diameter of the cylindrical cavity. The rod mounting hole is a through hole with internal threads on its inner wall and is concentric with the cylindrical cavity of the cap body. The rod is a screw rod with one end threaded into the rod mounting hole.

[0007] Furthermore: the cylindrical cavity of the top cap body includes an upper cavity and a lower cavity, the upper cavity and the lower cavity are connected and concentric, and the diameter of the upper cavity is smaller than that of the lower cavity.

[0008] Furthermore, the inner wall of the upper cavity has internal threads.

[0009] Furthermore: the connection between the upper cavity and the lower cavity has a chamfer, and the opening end of the lower cavity has a chamfer.

[0010] Furthermore, a wing nut is fixedly installed at the free end of the top rod.

[0011] Furthermore, the outer wall of the top cap body also has a roller texture.

[0012] Furthermore: the lower cavity is sleeved on the outer wall of the connecting section of the hydraulic solenoid valve, and the upper cavity is connected to the threaded section of the hydraulic solenoid valve through internal threads.

[0013] Compared with the prior art, this utility model has at least the following beneficial effects: This utility model is an emergency reset tool for hydraulic solenoid valves in the platform, outriggers, and leveling operating system of a rail work vehicle when they malfunction. After the emergency cap is installed on the hydraulic solenoid valve, the push rod is rotated as needed. The force of the push rod is used to hold the valve core that needs to be operated, opening the oil passage inside the solenoid valve. Emergency personnel can then operate the mechanism that needs to be reset to reset it. When the oil passage does not need to be opened, the push rod can be rotated in the opposite direction. This operation greatly reduces manpower, eliminating the need for emergency personnel to hold the tool against the valve core of the hydraulic solenoid valve, and thus improving the efficiency of emergency reset. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the opening and closing of the hydraulic solenoid valve oil circuit of this utility model;

[0016] The numbers in the diagram are as follows: 1. Top cap body; 2. Top rod; 3. Top rod mounting hole; 4. Wing nut; 5. Upper cavity; 6. Lower cavity; 7. Chamfer; 8. Hydraulic solenoid valve; 9. Valve body; 10. Hydraulic oil circuit; 11. Threaded section; 12. Valve core; 13. Connecting section. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0018] like Figure 1 , Figure 2 As shown: An emergency cap for a hydraulic solenoid valve includes: a cap body 1 and a rod 2. The cap body 1 is cylindrical with an internal cylindrical cavity. The lower end of the cap body 1 is open, and the top has a rod mounting hole 3. The rod mounting hole 3 is a through hole with internal threads on its inner wall and is concentric with the cylindrical cavity of the cap body 1. The rod 2 is a screw, with one end threaded into the rod mounting hole 3. In use, the cap body 1 is fitted onto the outer wall of the valve body 9 of the hydraulic solenoid valve 8 through its cylindrical cavity, fixing the cap body 1 to the outer wall of the valve body 9. Rotating the rod 2 moves the rod 2 toward the valve core 12, pushing the valve core 12 to one side until the hydraulic oil circuit 10 is connected. A wing nut 4 is fixedly installed at the free end of the rod 2 to reduce the force when rotating the rod 2.

[0019] The cylindrical cavity of the top cap body 1 includes an upper cavity 5 and a lower cavity 6. The upper cavity 5 and the lower cavity 6 are connected and concentric. The diameter of the upper cavity 5 is smaller than that of the lower cavity 6 but larger than that of the top rod mounting hole 3. The inner wall of the upper cavity 5 has internal threads. In practical applications, the outer wall of the hydraulic solenoid valve 8 is cylindrical, and the connection between the outer wall of the valve body 9 and the protective cover has a threaded section 11, which facilitates the connection between the protective cover and the outer wall of the valve body 9. There is also a connecting section 13 between the threaded section 11 and the valve body 9. When used in an emergency, the lower cavity 6 is fitted onto the outer wall of the connecting section 13, and the upper cavity 5 is connected to the threaded section 11 through its internal threads. The upper cavity 5 can ensure the fixed connection between the top cap body 1 and the outer wall of the valve body 9. The lower cavity 6 plays a guiding role during installation, making the installation of the top cap body 1 more convenient and faster.

[0020] The connection between the upper cavity 5 and the lower cavity 6, as well as the opening end of the lower cavity 6, are also chamfered 7; the chamfer 7 is provided to prevent damage to the outer wall of the valve body 9 and the threaded section 11 during installation.

[0021] The outer wall of the top cap body 1 also has roller patterns, which increase friction and make it quicker and easier to attach or detach the top cap body 1.

[0022] Specific usage method: When the hydraulic solenoid valve 8 malfunctions and the oil circuit cannot be connected, the overhead contact line maintenance vehicle cannot switch operating actions. First, remove the protective cover of the hydraulic solenoid valve 8. Then, attach the top cap body 1 of this utility model to the outer wall of the valve body 9. Rotate the wing nut 4 to make the push rod 2 rotate accordingly. The push rod 2 moves towards the valve core 12. During the movement of the push rod 2, the valve core 12 is pushed to one side until the hydraulic oil circuit 10 is connected. The overhead contact line maintenance vehicle can then switch operating actions in an emergency. After the emergency switch is completed, rotate the wing nut 4 in the opposite direction to remove the push rod 2 from the valve core 12 of the solenoid valve. Then, rotate the top cap body 1 in the opposite direction to remove the top cap body 1. Finally, put the protective cover back on the valve body 9. The emergency treatment is complete. Wait for the overhead contact line maintenance vehicle to return to the repair workshop for repair or replacement.

[0023] Although the present invention has been described herein with reference to illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and improvements can be made to the components and / or layout of the subject matter combination within the scope of the present application. Besides variations and improvements to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. An emergency cap for a hydraulic solenoid valve, characterized in that: The device includes a top cap body (1) and a top rod (2). The top cap body (1) is cylindrical and has a cylindrical cavity inside. The lower end of the top cap body (1) is open and the top has a top rod mounting hole (3). The diameter of the top rod mounting hole (3) is smaller than the diameter of the cylindrical cavity. The top rod mounting hole (3) is a through hole and has internal threads on its inner wall. The top rod mounting hole (3) is concentric with the cylindrical cavity of the top cap body (1). The top rod (2) is a screw rod, and one end of it is threaded into the top rod mounting hole (3).

2. The emergency cap for the hydraulic solenoid valve according to claim 1, characterized in that: The cylindrical cavity of the top cap body (1) includes an upper cavity (5) and a lower cavity (6). The upper cavity (5) and the lower cavity (6) are connected and concentric. The diameter of the upper cavity (5) is smaller than that of the lower cavity (6).

3. The emergency cap for the hydraulic solenoid valve according to claim 2, characterized in that: The inner wall of the upper cavity (5) has internal threads.

4. The emergency cap for the hydraulic solenoid valve according to claim 2, characterized in that: The upper cavity (5) and the lower cavity (6) are connected by a chamfer (7).

5. The emergency cap for the hydraulic solenoid valve according to claim 2, characterized in that: The lower cavity (6) has a chamfer (7) at its opening end.

6. The emergency cap for the hydraulic solenoid valve according to claim 3 or 4, characterized in that: The free end of the top rod (2) is fixedly installed with a wing nut (4).

7. The emergency cap for the hydraulic solenoid valve according to claim 1, characterized in that: The outer wall of the cap body (1) also has a roller pattern.

8. The emergency cap for the hydraulic solenoid valve according to claim 3 or 4, characterized in that: The lower cavity (6) is sleeved on the outer wall of the connecting section (13), and the upper cavity (5) is connected to the threaded section (11) through an internal thread.

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