A sliding valve testing mechanism for a motor train unit

Abstract

The utility model relates to EMU slide valve detection technical field, this EMU group is with slide valve test mechanism, including test bench body, the top of test bench body is provided with test chassis, is provided with the fixed subassembly of pressing down on test chassis, is provided with one way locking assembly on the fixed subassembly of pressing down, the fixed subassembly of placing of pressing down has slide valve body, the utility model, by one way locking assembly cooperation fixed subassembly of pressing down formed the one way rotation type clamping fixed structure to fix the slide valve, before testing through the fixed slide valve can realize to the slide valve, the antiskid pad on the whole fixed clamping plate always keeps surface contact with the slide valve in the whole fixing process, avoids the slide valve on the indentation while guaranteeing the clamping force degree, disconnects the gas path and electric connection joint after testing, pulls the locking block and separates the lateral clamping slot, can take down slide valve body through the support spring release elastic potential energy, one step operation can release the fixing of slide valve body, improves the test efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of high-speed train slide valve testing technology, specifically relating to a slide valve testing mechanism for high-speed trains. Background Technology

[0002] A spool valve is a directional control valve that uses a sliding valve core or plunger to open, close, or change the flow path of fluid. A spool valve has a movable valve core with various grooves and channels. By moving this valve core, different ports on the valve body can be connected or disconnected, thereby realizing complex flow path switching and control. Spool valves have advantages such as fast response speed, good sealing performance, high working pressure, and strong versatility, and are widely used in high-speed train braking systems.

[0003] To ensure the stability of the spool valve's operation, a testing device is needed to check its airtightness and control response before it is put into use. Existing spool valve testing mechanisms require manual fixing of the spool valve before testing its condition through the connected circuit and air path. Although this can meet daily testing needs, the spool valve process requires manual intervention, which increases labor costs and affects the testing efficiency of batch testing. Therefore, it is necessary to design a spool valve testing mechanism for high-speed trains. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and reasonably designed slide valve testing mechanism for high-speed trains in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A test mechanism for a sliding valve for a high-speed train includes a test bench body, a test base frame on the top of the test bench body, a pressing and fixing component on the test base frame, a one-way locking component on the pressing and fixing component, and a sliding valve body placed on the pressing and fixing component.

[0007] The downward pressing and fixing assembly includes a support plate fixed on the test base frame. Rotary supports are provided in the grooves symmetrically opened on both sides of the support plate. Fixed arms are rotatably connected to the rotating supports. An adaptive fastening assembly is provided at the top of the fixed arms. The bottom of the fixed arms is rotatably connected to the downward pressing bracket. The downward pressing bracket is fixed to the lower support by guide rods symmetrically arranged at the top. The guide rods are slidably connected to the support plate. An adjustment assembly is provided on the lower support. Support springs are symmetrically arranged at the bottom of the lower support. The bottom end of the support springs is fixed to the support plate.

[0008] As a further optimization of this utility model, the adjustment assembly includes an adjustment frame slidably connected to one side of the lower support, the adjustment frame being threadedly connected to a stud, the stud being rotatably connected to the lower support, and the slide valve body being located between the lower support and the adjustment frame.

[0009] As a further optimization of this utility model, the adaptive fastening assembly includes a connecting plate rotatably connected to the fixed arm, an anti-slip groove is provided at the connection between the connecting plate and the fixed arm, a support frame is slidably connected to the connecting plate, and a compression spring is provided between the support frame and the connecting plate.

[0010] As a further optimization of this utility model, the support frame is provided with a dovetail-shaped groove, a fixed clamping plate is slidably connected in the dovetail-shaped groove, a return spring is provided between the fixed clamping plate and the support frame, and an anti-slip pad is provided on the side of the fixed clamping plate near the slide valve body.

[0011] As a further optimization of this utility model, the one-way locking component includes a locking block slidably connected in the support plate, and a locking spring is provided between the locking block and the support plate.

[0012] As a further optimization of this utility model, one end of the locking block is detachably connected to a lateral slot, the lateral slots are evenly distributed on the side support, and the side support is fixed on the lowering bracket.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model supports the slide valve body by setting a downward fixing component. When fixing the slide valve body before testing, the slide valve body is clamped by the downward action. During the downward pressing of the slide valve, the one-way locking component is used to fix the slide valve body. The whole process does not require the use of tools, which is convenient for operators and reduces labor costs.

[0015] 2. In this utility model, the lower support and adjusting frame initially limit the position of the slide valve during fixing. The position between the lower support and the adjusting frame can be adjusted by rotating the stud, which can accommodate slide valves of different sizes. The lower pressing fixing component clamps both sides of the slide valve by rotating clamping. The fixing plate, support frame and connecting plate, which serve as the clamping parts, are rotatably connected to the fixing arm. During the rotation, the anti-slip pad on the entire fixing plate always maintains surface contact with the slide valve, avoiding indentations on the slide valve while ensuring clamping force.

[0016] 3. After the test of this utility model is completed, disconnect the air circuit and electrical connection connector, pull the locking block to disengage from the side slot, and then the elastic force of the support spring is released, which drives the lower pressure bracket and lower support to move upward. During the process, the anti-slip pad on the fixed clamp plate is completely separated from the slide valve body, and the slide valve body can be removed. The fixation of the slide valve body can be released with one-button operation, which improves the testing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the position of the adaptive fastening component in this utility model;

[0019] Figure 3 This is a partial structural schematic diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the installation position of the reset spring in this utility model;

[0021] Figure 5 This is a partial exploded view of the structure of this utility model.

[0022] In the diagram: 1. Test bench body; 2. Downward fixing assembly; 3. Test base frame; 4. One-way locking assembly; 5. Slide valve body; 21. Support plate; 22. Fixing arm; 23. Adaptive fastening assembly; 24. Downward bracket; 25. Lower support; 26. Adjustment frame; 27. Stud; 28. Support spring; 41. Locking block; 42. Locking spring; 43. Lateral slot; 44. Side support; 231. Connecting plate; 232. Support frame; 233. Compression spring; 234. Fixing clamp; 235. Return spring. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] For examples, please refer to Figures 1-5 A test mechanism for a sliding valve used in high-speed trains includes a test bench body 1. A test base frame 3 is installed on the top of the test bench body 1. A pressing and fixing component 2 for clamping and fixing the sliding valve from both sides is installed on the test base frame 3. A one-way locking component 4 is installed on the pressing and fixing component 2 to lock the position of the pressing and fixing component 2 and prevent the clamping from loosening. The sliding valve body 5 is placed on the pressing and fixing component 2. After the pressing and fixing component 2 is fixed by the one-way locking component 4 and the pressing and fixing component 2, the air passage and electrical connection connector are connected to the test bench body 1 through connecting pipes and external wires, respectively. During the test, the control module installed inside the test bench body 1 inputs control signals to the sliding valve body 5 through the external wires to regulate the valve core or plunger in the sliding valve body 5. At the same time, compressed air is introduced into the air passage of the sliding valve body 5 through the connecting pipes to test the air tightness and sliding valve response.

[0025] Please see Figure 1-5The pressing and fixing assembly 2 includes a support plate 21 fixed on the test base frame 3. Rotary supports are fixedly installed in grooves symmetrically opened on both sides of the support plate 21. A fixed arm 22 is rotatably connected to the rotating support. An adaptive fastening assembly 23 is installed at the top of the fixed arm 22, and the bottom of the fixed arm 22 is rotatably connected to a pressing bracket 24. The pressing bracket 24 is fixed to a lower support 25 via guide rods symmetrically arranged at its top. The guide rods are slidably connected to through holes opened in the support plate 21. Support springs 28 are symmetrically arranged at the bottom of the lower support 25, and the bottom ends of the support springs 28 are fixed to the support plate 21. An adjustment assembly is installed on the lower support 25. After the pressing and fixing assembly 2 clamps the slide valve body 5, the slide valve body... Body 5 is located between lower support 25 and adjusting frame 26. The adjusting assembly includes adjusting frame 26 slidably connected to one side of lower support 25. Adjusting frame 26 is threadedly connected to stud 27. One end of stud 27 is rotatably connected to lower support 25 via bearing. Rotating stud 27 can adjust the clamping distance between lower support 25 and adjusting frame 26, facilitating adaptation to different slide valve models. Adaptive fastening assembly 23 includes connecting plate 231 rotatably connected to fixed arm 22. Anti-slip groove is provided at the connection between connecting plate 231 and fixed arm 22. The anti-slip groove provides friction between connecting plate 231 and fixed arm 22, preventing connecting plate 231 from becoming too loose and automatically downward under gravity. Flipping over, a support frame 232 is slidably connected to the connecting plate 231. A compression spring 233 is provided between the support frame 232 and the connecting plate 231. A dovetail-shaped groove is provided on the support frame 232, and a fixing plate 234 is slidably connected in the dovetail-shaped groove. A return spring 235 is provided between the fixing plate 234 and the support frame 232. An anti-slip pad is provided on the side of the fixing plate 234 near the slide valve body 5. Before fixing the slide valve body 5, the position between the adjusting frame 26 and the adjusting frame 26 is adjusted by rotating the stud 27, so that the slide valve body 5 can be placed and locked into the groove formed between the adjusting frame 26 and the adjusting frame 26. When pressing down to fix, downward pressure is applied to the slide valve body 5 from both sides. When the lower support 25 moves downward, it will drive the lower pressure bracket 24 to move downward through the guide rod. At the same time, the fixed arm 22 moves around the rotating support and approaches the slide valve body 5. After the anti-slip pad on the fixed clamp 234 contacts the side wall of the slide valve body 5, it will apply a rotational force to make the entire fixed clamp 234, support frame 232 and connecting plate 231 rotate around the fixed arm 22, so that the anti-slip pad makes surface contact with the slide valve body 5. After surface contact, the fixed clamp 234 on both sides of the slide valve will continue to press down and compress the return spring 235 to move downward with the slide valve body 5. At the same time, the fixed arm 22 continues to rotate and compress the pressure spring 233, thereby clamping the slide valve body 5 through the elastic potential energy accumulated by the pressure springs 233 on both sides.

[0026] Please see Figure 1-5The one-way locking assembly 4 includes a locking block 41 slidably connected to the support plate 21. A locking spring 42 is provided between the locking block 41 and the support plate 21. Under the elastic force of the locking spring 42, one end of the locking block 41 will engage with the lateral slot 43. The lateral slots 43 are evenly distributed on the side support 44, which is fixed to the lowering bracket 24. During the process of fixing the slide valve body 5, the side support 44 will move down with the lowering bracket 24. During this process, the pressure between the lateral slot 43 and the locking block 41 will... A component force is provided to make the locking block 41 slide inward into the support plate 21, thereby causing the locking block 41 to disengage from the current lateral slot 43 until the next lateral slot 43 moves to the position of the locking block 41. The above process is repeated until the pressure spring 233 clamps the slide valve body 5 on the lower support 25. Then the slide valve body 5 is released. At this time, the pressure between the locking block 41 and the lateral slot 43 is perpendicular to the horizontal direction. The locking block 41 cannot move and completely locks the position of the side support 44, realizing the unidirectional rotation of the fixed arm 22.

[0027] It should be noted that, in use, this type of sliding valve testing mechanism for high-speed trains involves first rotating the stud 27 to adjust the position between the adjusting bracket 26 and the adjusting frame 26, then placing the sliding valve body 5 and locking it into the groove formed between the adjusting bracket 26 and the adjusting frame 26. During the downward pressing and fixing, downward pressure is applied to the sliding valve body 5 from both sides. The sliding valve body 5 causes the lower support 25 to move downward, and the fixing arm 22 moves closer to the sliding valve body 5 around the rotating support. Simultaneously, the side support 44 moves downward along with the downward pressing bracket 24. During this process, the pressure between the lateral slot 43 and the locking block 41 will increase. The force that causes the locking block 41 to slide inward toward the support plate 21 causes the locking block 41 to disengage from the current lateral slot 43 until the next lateral slot 43 moves to the position of the locking block 41. Once the anti-slip pads on the fixing plate 234 contact the side wall of the valve body 5, a rotational force is applied, causing the fixing plate 234 to rotate around the fixing arm 22 and make surface contact with the valve body 5. As pressure continues to fall, the fixing plates 234 on both sides of the valve body move downward with the valve body 5. Simultaneously, the fixing arm 22 continues to rotate, compressing the pressure spring 233, which in turn causes pressure springs on both sides to move downward. The elastic potential energy stored in spring 233 clamps the valve body 5. After complete clamping, the valve body 5 is released. The pressure between locking block 41 and lateral slot 43 is perpendicular to the horizontal direction, preventing locking block 41 from moving and completely locking the position of side support 44. At this point, the valve body 5 is fixed without manual operation. Afterwards, the air circuit and electrical connection are connected to the test bench body 1 via connecting pipes and external wiring, respectively. During the test, the control module inside the test bench body 1 inputs control signals to the valve body 5 via the external wiring. Adjust the valve core or plunger in the slide valve body 5, and simultaneously introduce compressed air into the air passage of the slide valve body 5 through the connecting pipe to test the air tightness and slide valve response. After the test is completed, disconnect the air passage and electrical connection connector, pull the locking block 41 to disengage from the side slot 43, and then the elastic force of the support spring 28 is released, causing the lower pressure bracket 24 and lower support 25 to move upward. During the process, the anti-slip pad on the fixing clamp 234 completely disengages from the slide valve body 5, and the slide valve body 5 can be removed. The fixation of the slide valve body 5 can be released with one-button operation, which improves the testing efficiency.

[0028] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A test mechanism for a sliding valve used in high-speed trains, comprising a test bench body (1), characterized in that: The test bench body (1) is provided with a test base frame (3) on top, a pressing and fixing component (2) is provided on the test base frame (3), a one-way locking component (4) is provided on the pressing and fixing component (2), and a slide valve body (5) is placed on the pressing and fixing component (2). The pressing and fixing assembly (2) includes a support plate (21) fixed on the test base frame (3). Rotary supports are provided in the grooves symmetrically opened on both sides of the support plate (21). A fixed arm (22) is rotatably connected to the rotating support. An adaptive fastening assembly (23) is provided on the top of the fixed arm (22). The bottom of the fixed arm (22) is rotatably connected to the pressing bracket (24). The pressing bracket (24) is fixed to the lower support (25) by a guide rod symmetrically arranged on the top. The guide rod is slidably connected to the support plate (21). An adjustment assembly is provided on the lower support (25). A support spring (28) is symmetrically arranged at the bottom of the lower support (25). The bottom end of the support spring (28) is fixed to the support plate (21).

2. The test mechanism for a sliding valve used in a high-speed train according to claim 1, characterized in that: The adjustment assembly includes an adjustment frame (26) slidably connected to one side of the lower support (25), the adjustment frame (26) being threadedly connected to a stud (27), the stud (27) being rotatably connected to the lower support (25), and the slide valve body (5) being located between the lower support (25) and the adjustment frame (26).

3. The test mechanism for a sliding valve used in a high-speed train according to claim 1, characterized in that: The adaptive fastening assembly (23) includes a connecting plate (231) rotatably connected to the fixed arm (22), an anti-slip groove is provided at the connection between the connecting plate (231) and the fixed arm (22), a support frame (232) is slidably connected to the connecting plate (231), and a pressure spring (233) is provided between the support frame (232) and the connecting plate (231).

4. The test mechanism for a sliding valve used in a high-speed train according to claim 3, characterized in that: The support frame (232) has a dovetail-shaped groove, and a fixed clamping plate (234) is slidably connected in the dovetail-shaped groove. A reset spring (235) is provided between the fixed clamping plate (234) and the support frame (232). An anti-slip pad is provided on the side of the fixed clamping plate (234) near the slide valve body (5).

5. The test mechanism for a slide valve used in a high-speed train according to claim 1, characterized in that: The one-way locking assembly (4) includes a locking block (41) slidably connected in the support plate (21), and a locking spring (42) is provided between the locking block (41) and the support plate (21).

6. The test mechanism for a sliding valve used in a high-speed train according to claim 5, characterized in that: One end of the locking block (41) is detachably connected to the lateral slot (43), which is evenly distributed on the side support (44), and the side support (44) is fixed on the lower support (24).

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