Electromagnetic pilot operated valve testing device

Abstract

The utility model discloses an electromagnetic pilot valve testing device, which comprises a bottom plate, an adapter plate and a clamping device are oppositely arranged on the bottom plate in parallel, the inner side surface of the adapter plate is in surface contact with the interface surface of an electromagnetic pilot valve, and the inner side surface is provided with an inner liquid inlet hole corresponding to the interface of the electromagnetic pilot valve; the clamping device comprises a clamping base fixed to the bottom plate, a pressing plate is arranged on the inner side of the clamping base, a hydraulically-pushed piston is arranged in the clamping base and acts on the pressing plate, and the electromagnetic pilot valve can be clamped through the pressing plate and the adaptive plate. A positioning plate is installed on the bottom plate and located between the adaptive plate and the clamping device, and a groove is formed in the positioning plate and used for clamping and positioning the electromagnetic pilot valve. Components of the device can be flexibly matched, the device is suitable for clamping tests of electromagnetic pilot valves of various models, when the device is used for testing the electromagnetic pilot valves, the connecting and clamping efficiency is high, and the testing quality can be ensured, so that the overhauling quality and the overhauling efficiency of the electromagnetic pilot valves are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of electromagnetic pilot valve testing, and in particular to an electromagnetic pilot valve testing device. Background Technology

[0002] The electromagnetic pilot valve is a dual "two-position three-way valve core" pilot-operated electromagnet, mainly used to drive the main control valve assembly of a hydraulic support. It consists of two two-position three-way valves and one dual electromagnet. After a period of use, the electromagnetic valve requires a series of procedures including disassembly, grinding, cleaning, assembly, and debugging to complete maintenance. Post-maintenance performance testing of the electromagnetic pilot valve is crucial. Due to the special connection method of the electromagnetic pilot valve's supply port P, return port R, and working ports A and B, after maintenance, the electromagnetic pilot valve needs to be assembled onto the main valve for testing. If quality problems occur during the test, it needs to be disassembled and repaired again. This is not only time-consuming and labor-intensive, but also prone to subtle quality problems that are difficult to detect due to the no-load testing, leading to inaccurate testing and a high frequency of after-sales service after electromagnetic pilot valve maintenance. Utility Model Content

[0003] The purpose of this invention is to provide a testing device for electromagnetic pilot valves, which can quickly and individually test electromagnetic pilot valves after maintenance, greatly improving the maintenance quality of electromagnetic pilot valves and effectively increasing production efficiency.

[0004] The technical solution adopted by this utility model is an electromagnetic pilot valve testing device, including a base plate, an adapter plate and a clamping device installed parallel to each other on the base plate, the inner side of the adapter plate is in contact with the interface surface of the electromagnetic pilot valve, the inner side of the adapter plate is provided with an inner liquid inlet hole corresponding to the interface of the electromagnetic pilot valve, the outer side of the adapter plate is provided with an outer liquid inlet hole communicating with the inner liquid inlet hole, the clamping device includes a clamping seat fixed on the base plate, a pressure plate is provided on the inner side of the clamping seat, a hydraulically pushed piston is provided in the clamping seat to act on the pressure plate, the electromagnetic pilot valve can be clamped by the pressure plate and the adapter plate, a positioning plate is installed on the base plate between the adapter plate and the clamping device, the positioning plate is provided with a groove for the electromagnetic pilot valve to be clamped and positioned.

[0005] Furthermore, the base plate has fixing holes at its four corners, and the base plate is fixed to the workbench by bolts inserted into the fixing holes.

[0006] Furthermore, the base plate is provided with a step, and the adapter plate and the outer side of the bottom surface of the clamping seat are provided with a groove to engage with the step.

[0007] Furthermore, the external liquid inlet is located on the adjacent outer surface of the adapter plate.

[0008] Furthermore, the external liquid inlet uses a DN10 interface.

[0009] Furthermore, the inner side of the clamping seat is provided with a piston hole, in which a piston is slidably connected. The piston abuts against the back side of the connecting pressure plate. The rear end of the piston hole is connected to a pressure supply hole. The clamping seat is provided with a connecting hole on the outside of the piston hole. A screw for threaded connection to the pressure plate is provided in the connecting hole. A spring is sleeved on the screw and abuts against the clamping seat and the rear end of the screw respectively.

[0010] Furthermore, the spring is a disc spring.

[0011] Furthermore, the back side of the pressure plate is provided with a sliding column, which is slidably connected in the piston hole.

[0012] This utility model has the following beneficial effects:

[0013] 1. The testing device of this utility model has components that can be flexibly matched and is suitable for clamping tests of various types of electromagnetic pilot valves. After the electromagnetic pilot valve has been repaired, the sealing performance and flexibility performance can be tested using this device. The connection and clamping efficiency is high, which can ensure the test quality and thus improve the repair quality and efficiency of electromagnetic pilot valves.

[0014] 2. The testing device of this utility model has a simple manufacturing process and can be processed using ordinary steel. The positioning and clamping operation is convenient and quick, which can play a key role in preventing safety accidents. It can improve the maintenance quality of electromagnetic pilot valves and reduce the frequency of after-sales service after maintenance of electromagnetic pilot valves. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the present invention from a frontal view;

[0016] Figure 2 This is a structural schematic diagram of the present invention from the rear view;

[0017] Figure 3 This is a front view of the clamping seat of this utility model;

[0018] Figure 4 yes Figure 3 Sectional view along line AA;

[0019] Figure 5 yes Figure 3 Sectional view along the BB direction;

[0020] Figure 6 This is a front view of the pressure plate of this utility model;

[0021] Figure 7 This is a bottom view of the pressure plate of this utility model;

[0022] Figure 8 This is a side view of the positioning plate of this utility model.

[0023] In the diagram: 1. Base plate; 11. Fixing hole; 12. Step; 2. Adapter plate; 21. Inner liquid inlet hole; 22. Outer liquid inlet hole; 3. Clamping device; 31. Clamping seat; 311. Piston hole; 312. Pressing liquid supply hole; 313. Connecting hole; 32. Pressure plate; 321. Sliding column; 4. Positioning plate. Detailed Implementation

[0024] To better understand the purpose, structure, and function of this utility model, the electromagnetic pilot valve testing device of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, an electromagnetic pilot valve testing device includes a base plate 1. An adapter plate 2 and a clamping device 3 are mounted parallel to each other on the base plate 1. The inner side of the adapter plate 2 is in contact with the interface surface of the electromagnetic pilot valve. The inner side is provided with an inner inlet hole 21 corresponding to the interface of the electromagnetic pilot valve. The outer side of the adapter plate 2 is provided with an outer inlet hole 22 communicating with the inner inlet hole 21. The clamping device 3 includes a clamping seat 31 fixed on the base plate 1. A pressure plate 32 is provided on the inner side of the clamping seat 31. A hydraulically driven piston is provided in the clamping seat 31 and acts on the pressure plate 32. The electromagnetic pilot valve can be clamped by the pressure plate 32 and the adapter plate 2. A positioning plate 4 is installed on the base plate 1 between the adapter plate 2 and the clamping device 3. The positioning plate 4 is provided with a groove for clamping and positioning the electromagnetic pilot valve.

[0026] In this embodiment, the testing device is made of stainless steel with high processing precision. The base plate 1 has fixing holes 11 at its four corners, and the base plate 1 is fixed to the worktable by bolts inserted into the fixing holes 11. The base plate 1 has steps 12, and the adapter plate 2 and the clamping seat 31 have grooves on their outer bottom surfaces that engage with the steps 12. The stepped structure of the base plate 1 avoids impact on the connecting bolts when the system applies pressure, thus effectively protecting the connecting bolts.

[0027] The adapter plate 2 is fixed to the base plate 1 by connecting bolts. The inner inlet port 21 and the outer inlet port 22 are mainly composed of a supply port P, a return port R, and working ports A and B. The outer inlet port 22 is located on the adjacent outer surface of the adapter plate, which can reduce the size of the adapter plate. The outer inlet port 22 adopts a DN10 interface, which is convenient and quick to connect pipes, effectively improving the maintenance efficiency of the electromagnetic pilot valve. When the system supplies liquid, by operating working ports A and B respectively, the supply port P is connected to working ports A and B accordingly, thereby realizing the testing of the sealing performance and operating performance of the electromagnetic pilot valve.

[0028] The clamping device 3 mainly consists of a clamping seat 31, a piston, and a disc spring, such as Figures 3-7As shown, the inner side of the clamping seat 31 is provided with a piston hole 311, in which a piston is slidably connected. The back side of the pressure plate 32 is provided with a sliding column 321, which is slidably connected in the piston hole 311. The rear end of the piston hole 311 is connected to a pressure supply hole 312. The clamping seat 31 is provided with a connecting hole 313 on the outer side of the piston hole 311. A screw threadedly connected to the pressure plate 32 is provided in the connecting hole 313. A disc spring is sleeved on the screw and abuts against the clamping seat 31 and the rear end of the screw respectively.

[0029] The pressure plate 32 is used for tightening and loosening the electromagnetic pilot valve. When the system is supplied with liquid and the clamping button is pressed, the pressure plate 32 moves to the left under the action of the piston to clamp the electromagnetic pilot valve. When the system is depressurized, the pressure plate 32 returns to its original state under the action of the disc spring.

[0030] like Figure 8 As shown, the positioning plate 4 has a through groove, which allows the liquid supply port, liquid return port and working port of the electromagnetic pilot valve to fit tightly with the liquid port of the adapter plate.

[0031] After the electromagnetic pilot valve is repaired, it is placed on the positioning plate 4 and its control port is connected to the test bench via a cable. Press the clamping button and the liquid supply button in sequence. The clamping device 3 tightly fits the electromagnetic pilot valve with the adapter plate 2, thereby effectively conducting a performance test on the electromagnetic pilot valve.

[0032] This invention relates to an electromagnetic pilot valve testing device. An adapter plate 2 is designed to match the relative positions of the electromagnetic pilot valve's inlet, outlet, and working port. The electromagnetic pilot valve to be tested is fixed by a base plate 1 and a positioning plate 4. A hydraulically driven clamping device 3 tightly fits the electromagnetic pilot valve to the adapter plate 2. An inlet pipe and an outlet pipe are connected to the other end of the adapter plate 2. By manipulating the test bench to supply liquid, performance testing can be performed. Using this electromagnetic pilot valve for performance testing not only significantly reduces the labor intensity of manual clamping for operators and improves testing efficiency, but also ensures test quality.

[0033] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A testing device for an electromagnetic pilot valve, characterized in that, The device includes a base plate (1), on which an adapter plate (2) and a clamping device (3) are mounted in parallel opposite directions. The inner side of the adapter plate (2) is in contact with the interface surface of the electromagnetic pilot valve. The inner side is provided with an inner inlet hole (21) corresponding to the interface of the electromagnetic pilot valve. The outer side of the adapter plate (2) is provided with an outer inlet hole (22) that connects to the inner inlet hole (21). The clamping device (3) includes a clamping seat (31) fixed on the base plate (1). A pressure plate (32) is provided on the inner side of the clamping seat (31). A hydraulically driven piston is provided in the clamping seat (31) and acts on the pressure plate (32). The electromagnetic pilot valve can be clamped by the pressure plate (32) and the adapter plate (2). A positioning plate (4) is installed on the base plate (1) between the adapter plate (2) and the clamping device (3). The positioning plate is provided with a groove for the electromagnetic pilot valve to be clamped and positioned.

2. The electromagnetic pilot valve testing device according to claim 1, characterized in that, The base plate (1) has fixing holes (11) at its four corners. The base plate (1) is fixed to the workbench by bolts inserted into the fixing holes (11).

3. The electromagnetic pilot valve testing device according to claim 1, characterized in that, The base plate (1) has a step (12), and the adapter plate (2) and the clamping seat (31) have grooves on the outer side of their bottom surfaces that are engaged with the step (12).

4. The electromagnetic pilot valve testing device according to claim 1, characterized in that, An external liquid inlet (22) is located on the adjacent outer surface of the adapter plate (2).

5. The electromagnetic pilot valve testing device according to any one of claims 1 to 4, characterized in that, The external liquid inlet (22) adopts a DN10 interface.

6. The electromagnetic pilot valve testing device according to claim 1, characterized in that, The inner side of the clamping seat (31) is provided with a piston hole (311), and a piston is slidably connected in the piston hole (311). The piston abuts against the back side of the connecting pressure plate (32). The rear end of the piston hole (311) is connected to a pressure supply hole (312). The clamping seat (31) is provided with a connecting hole (313) on the outside of the piston hole (311). A screw for threaded connection of the pressure plate (32) is provided in the connecting hole (313). A spring is sleeved on the screw and abuts against the clamping seat (31) and the rear end of the screw respectively.

7. The electromagnetic pilot valve testing device according to claim 1, characterized in that, The spring is a disc spring.

8. The electromagnetic pilot valve testing device according to claim 6 or 7, characterized in that, The back side of the pressure plate (32) is provided with a sliding column (321), which is slidably connected in the piston hole (311).

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