Dismounting tool for valve element sheath of height valve of motor train unit

Abstract

The utility model discloses a dismounting tool for a valve element sheath of a height valve of a motor train unit, and belongs to the technical field of auxiliary tools for maintenance of components of the motor train unit. The device is provided with a sleeve and a transmission rod penetrating through the sleeve, the sliding table is in spiral transmission with the transmission rod and can be arranged in the valve body; the transmission rod is provided with a driving end and a free end capable of being suspended outside the sleeve; the driving end is rotationally connected with the sleeve and is fixedly connected with a driving piece; wherein the sleeve is provided with a cavity for containing a valve element protective sleeve, so that the sleeve abuts against the end of a shaft sleeve of a valve body and drives the transmission rod to rotate, and the sliding table abuts against the valve element protective sleeve through an abutting face and drives the valve element protective sleeve to move into the cavity to be separated from the valve body. According to the utility model, the valve core sheath and the valve body cavity are effectively prevented from being damaged in the process of disassembling the valve core sheath, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tooling technology for the maintenance of EMU components, and in particular to a tool for disassembling the valve core sleeve of an EMU height valve. Background Technology

[0002] The height valve of the EMU is an important component for adjusting the internal air pressure of the air spring, maintaining the level of the carriage, and ensuring the stable operation of the vehicle. It needs to be disassembled and repaired during important maintenance stages, replacing the internal rubber sealing components, and inspecting and testing all parts such as the valve body, valve core, and valve core sleeve.

[0003] The valve core sleeve, an internal component of the height valve, is a crucial part that protects the valve core and maintains its concentric movement within the valve body. It requires an interference fit with the valve body during installation, necessitating the use of a specialized pressing tool to press the valve core sleeve into the valve body cavity. When performing maintenance on the height valve, disassembly is necessary, requiring the removal of the valve core sleeve for inspection, including the valve body cavity. Because of the interference fit between the valve core sleeve and the valve body cavity, removing the valve core sleeve presents significant resistance.

[0004] The current method for disassembling the valve core sleeve is to use needle-nose pliers. This method is suitable for operation in a large space, but the operable space in the valve body cavity of the height valve is small. Furthermore, using needle-nose pliers can easily cause damage to the valve core sleeve and the inner wall of the valve body cavity, resulting in the failure of the height valve and greatly increasing maintenance costs.

[0005] Therefore, in view of the above problems, it is necessary for this utility model to provide a tool for disassembling the valve core sleeve of the height valve of a high-speed train that can quickly and conveniently disassemble the valve core sleeve and ensure that the valve core sleeve and valve body chamber are not damaged during the disassembly process. Utility Model Content

[0006] The purpose of this utility model is to overcome the defects of the existing technology and provide a tool for disassembling the valve core sleeve of the height valve of a high-speed train, so as to solve the problem that the valve core sleeve and the inner wall of the valve body cavity are easily damaged or damaged during the disassembly process of the height valve core sleeve in the existing technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model discloses a tool for disassembling the valve core sleeve of a high-speed train height valve, comprising:

[0009] A sleeve, a transmission rod passing through the sleeve; and

[0010] A slide that is helically driven by the transmission rod and can be placed inside the valve body;

[0011] The transmission rod has a driving end and a free end that can be suspended outside the sleeve;

[0012] The drive end is rotatably connected to the sleeve and is fixedly connected to a drive component;

[0013] The sleeve has a cavity for accommodating the valve core sleeve, so that the sleeve abuts against the end of the bushing of the valve body, drives the transmission rod to rotate, and the slide abuts against the valve core sleeve through the abutment surface and drives the valve core sleeve to move into the cavity and disengage from the valve body.

[0014] Furthermore, the slide has a boss concentric with the transmission hole on its side, the sidewall of the boss has a mating surface, and the end face of the slide forms the abutment surface.

[0015] Furthermore, the diameter of the virtual circle formed by the outer contour of the slide is smaller than the outer diameter of the valve core sleeve and larger than the inner diameter of the valve core sleeve.

[0016] Furthermore, the slide is a disc, and the disc has symmetrically machined cross-sections perpendicular to the contact surface on both sides.

[0017] Furthermore, the inner diameter of the sleeve is larger than the outer diameter of the valve core sleeve and smaller than the outer diameter of the bushing of the valve body.

[0018] Furthermore, a base portion is formed at one end of the sleeve, and a bearing is installed on the base portion, which is rotatably connected to the transmission rod through the bearing. An overlapping section is formed at the other end of the sleeve, and the overlapping section is fitted onto the outside of the bushing of the valve body. An annular limiting surface is formed inside the sleeve.

[0019] Furthermore, countersunk holes are symmetrically provided on both sides of the base portion, and the bearings are installed in each of the countersunk holes.

[0020] Furthermore, the driving component is an L-shaped crank handle, with the top end of the L-shaped vertical section of the crank handle fixedly connected to the transmission rod.

[0021] Furthermore, the crank handle includes a connecting rod and a grip rod, the bottom end of the connecting rod is rotatably connected to the grip rod, and a limit hole is formed at the top end of the connecting rod.

[0022] Furthermore, the transmission rod is a lead screw, one end of which forms an optical shaft section, one end of which has a shoulder, and the other end forms a square limiting post, and the optical shaft section has a slot at the end of the limiting post.

[0023] In the above technical solution, the present invention provides a tool for disassembling the valve core sleeve of a high-speed train height valve, which has the following advantages:

[0024] This utility model discloses a disassembly tool with a transmission rod passing through a sleeve. A slide is helically driven by the transmission rod and can be placed inside the valve body. The drive end of the transmission rod is rotatably connected to the sleeve and is fixedly connected to a driving component. In use, the sleeve abuts against the valve body, and the driving component drives the transmission rod to rotate. The slide abuts against the valve core sleeve through its contact surface. As the slide moves, it drives the valve core sleeve to move into the cavity, thereby causing the valve core sleeve to exit the mounting hole and detach from the valve body. This effectively solves the problem of the valve core sleeve of the height valve being difficult to disassemble in a narrow space. Compared with the existing technology that uses needle-nose pliers for disassembly, this tool can effectively protect the valve core sleeve inside the height valve body from damage, realize the rapid disassembly of the valve core sleeve inside the height valve body, and greatly improve the operating efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is an isometric drawing of the tool for disassembling the valve core sleeve of the height valve of a high-speed train disclosed in this utility model;

[0027] Figure 2 This is an isometric view from another perspective of the disassembly tool for the valve core sleeve of the height valve of the EMU disclosed in this utility model;

[0028] Figure 3 This is a cross-sectional view of the bushing of the tool for disassembling the valve core sleeve of the height valve of a high-speed train disclosed in this utility model;

[0029] Figure 4 This is an isometric drawing of the slide table for disassembling the valve core sleeve of the height valve of a high-speed train disclosed in this utility model.

[0030] Figure 5 This is a front view of the slide table for disassembling the valve core sleeve of the EMU height valve disclosed in this utility model;

[0031] Figure 6 This is a top view of the slide table for disassembling the valve core sleeve of the EMU height valve disclosed in this utility model;

[0032] Figure 7 This is an isometric view of the drive rod of the tool for disassembling the valve core sleeve of the height valve of a high-speed train disclosed in this utility model.

[0033] Figure 8 This is an isometric view of the crank handle of the tool for disassembling the valve core sleeve of the height valve of a high-speed train disclosed in this utility model.

[0034] Figure 9This is a schematic diagram showing the usage status of the disassembly tool for the valve core sleeve of the EMU height valve disclosed in this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Sleeve; 2. Drive rod; 3. Slide table; 4. Handle; 5. Bearing; 6. Snap ring; 7. Bolt; 10. Valve body; 11. Valve core sleeve;

[0037] 101. Chamber; 102. Base; 103. Overlapping section; 104. Limiting surface;

[0038] 201. Optical axis section; 202. Shoulder; 203. Limiting post;

[0039] 301. Bossed portion; 302. Abutting surface; 303. Cut surface;

[0040] 401. Connecting rod; 402. Limiting hole; 403. Grip rod; 404. Shaft section. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0042] See Figure 1 , 2 As shown;

[0043] A utility model discloses a tool for disassembling the valve core sleeve of a height valve on a high-speed train, comprising:

[0044] Sleeve 1, transmission rod 2 passing through sleeve 1, slide table 3, and driving component;

[0045] The slide 3 is screwed to the transmission rod 2 and can be placed inside the valve body 10;

[0046] The transmission rod 2 has a driving end and a free end that can be suspended outside the sleeve 1. The driving end of the transmission rod 2 is rotatably connected to the sleeve 1 and fixedly connected to a driving component.

[0047] The sleeve 1 has a chamber 101, which accommodates the valve core sleeve 11.

[0048] In use, the sleeve 1 abuts against the end of the bushing of the valve body 10, and the transmission rod 2 is driven to rotate by the driving component. The slide 3 abuts against the valve core sleeve 11 through the abutment surface 302. While the slide 3 is displaced, it drives the valve core sleeve 11 to move into the chamber 101, thereby causing the valve core sleeve 11 to exit the mounting hole and detach from the valve body 10. This effectively solves the problem that the valve core sleeve of the height valve is not easy to disassemble in a narrow space, and ensures that the valve core sleeve and the valve body chamber will not be damaged during the disassembly process. Using this tool, the valve core sleeve in the height valve body can be quickly disassembled without damaging the valve core sleeve of the height valve.

[0049] See Figure 4-6 As shown:

[0050] Preferably, the slide 3 has a boss 301 concentric with the transmission hole on its side. The side wall of the boss 301 has a mating surface, and the end face of the slide 3 has an abutment surface 302. In this structure, the slide 3 penetrates into the valve core sleeve 11 through the boss 301. The mating surface formed by the side wall of the boss 301 matches the inner diameter of the valve core sleeve 11 to accurately position the slide 3. In use, the abutment surface 302 formed by the end face of the slide 3 abuts against the end of the valve core sleeve 11. The transmission hole is a threaded hole, and the transmission hole and the transmission rod 2 are screwed together. The displacement of the slide 3 provides a clamping force to squeeze the valve core sleeve 11, thereby smoothly removing the valve core sleeve 11 from the mounting hole of the valve body 10. Preferably, the diameter of the virtual circle formed by the outer contour of the slide 3 is smaller than the outer diameter of the valve core sleeve 11 and larger than the inner diameter of the valve core sleeve 11. That is, the outer diameter of the slide 3 is smaller than the diameter of the mounting hole of the valve body 10, forming a clearance fit with the mounting hole of the valve body 10, so as to avoid damaging the mounting hole of the valve body 10 during the process of pushing and unloading the valve core sleeve 11.

[0051] See Figure 6 As shown:

[0052] Preferably, the slide 3 is a disc-shaped body with symmetrically machined cross-sections 303 perpendicular to the contact surface 302 on both sides. In other words, the slide 3 uses a stepped circular metal block with parallel cut edges. Its dimensions are: a large circle radius of 14mm, a small circle radius of 12.5mm, a thickness of 8mm, and rectangular tangents centered on the center with a width of 18.2mm. The large and small circle dimensions of the slide 3 match the outer and inner diameters of the height valve body chamber and valve core sleeve. This structure, through the cross-sections 303, facilitates the rotation of the slide 3 without rotating the transmission rod 2.

[0053] See Figure 3 As shown:

[0054] Preferably, the inner diameter of the sleeve 1 is larger than the outer diameter of the valve core sleeve 11 and smaller than the outer diameter of the bushing of the valve body 10.

[0055] One end of the sleeve 1 has a base portion 102, on which a bearing 5 is installed. The bearing 5 is rotatably connected to the transmission rod 2. The other end of the sleeve 1 has an overlapping section 103, which is fitted onto the outside of the bushing of the valve body 10. An annular limiting surface 104 is formed inside the sleeve 1. In this structure, the sleeve 1 cooperates with the bushing of the valve body 10 through the overlapping section 103. When in use, the overlapping section 103 is fitted onto the outside of the bushing of the valve body 10. After overlapping, the inside of the sleeve 1 abuts against the valve body 10 through the limiting surface 104, preventing axial displacement of the sleeve 1. Through the cooperation of the overlapping section 103 and the limiting surface 104, the position of the sleeve 1 on the valve body 10 is accurately positioned, ensuring that the valve core sleeve 11 can smoothly enter the chamber 101 of the sleeve 1, and avoiding mechanical interference between the valve core sleeve 11 and the sleeve 1 during the unloading process.

[0056] The base part 102 has countersunk holes symmetrically opened on both sides, and bearings 5 ​​are installed in each countersunk hole. The double bearings 5 ​​are rotatably connected to the transmission rod 2, so the transmission is stable.

[0057] See Figure 1 , 2 As shown:

[0058] Preferably, the driving component is an L-shaped crank handle 4, with the top of the L-shaped vertical section of the crank handle 4 fixedly connected to the transmission rod 2, so that the transmission rod 2 can be manually driven to rotate. Of course, depending on the actual use requirements, the driving component can also be a motor, so that the transmission rod 2 can be electrically driven to rotate.

[0059] See Figure 7 , 8 As shown, the crank handle 4 includes a connecting rod 401 and a grip 403. The bottom end of the connecting rod 401 is rotatably connected to the grip 403, and a limiting hole 402 is formed at the top end of the connecting rod 401. Specifically, in this structure, one end of the grip 403 has a shaft segment 404 with a groove. The shaft segment 404 is connected to the bearing 5 at the bottom end of the connecting rod 401 through the shaft segment 404, and a retaining spring 6 cooperates with the groove to prevent axial displacement of the shaft segment 404 and prevent the grip 403 from disengaging from the connecting rod 401. The top end of the connecting rod 401 has a square limiting hole 402, which is inserted and pulled to the square limiting post 203 at the end of the transmission rod 2 through the square limiting hole 402 to prevent rotational movement between the transmission rod 2 and the connecting rod 401 of the crank handle 4. After connection, it is fastened with bolts 7 (e.g., ...). Figure 1 (as shown);

[0060] See Figure 7 As shown:

[0061] Preferably, the transmission rod 2 is a lead screw, with a smooth shaft section 201 formed at one end. The smooth shaft section 201 has a shoulder 202 at one end and a square limiting post 203 at the other end. The square limiting post 203 is plugged into and connected to the limiting hole 402 opened in the connecting rod 401. The smooth shaft section 201 has a slot at the end of the limiting post 203. During assembly, the transmission rod 2 is screwed to the slide table 3 through the lead screw. The smooth shaft section 201 is rotatably connected to the sleeve 1 through the bearing 5. The smooth shaft section 201 uses the shoulder 202 and the snap ring 6 installed in the slot to prevent the transmission rod 2 from disengaging from the bearing 5. After the limiting post 203 cooperates with the limiting hole 402, the transmission rod 2 is fixedly connected to the crank handle 4 by bolts 7.

[0062] The working principle of the high-speed train height valve core sleeve disassembly tool provided by this utility model in the above technical solution is as follows:

[0063] This tool uses a sleeve 1 as a frame. The moving parts are driven by a transmission rod 2 and a slide 3. The crank handle 4 drives the transmission rod 2 to rotate, and the sleeve 1 ensures the distance between the crank handle 4 and the height valve body. The rotation of the transmission rod 2 drives the slide 3 to move, and the slide 3 takes out the valve core sleeve, thereby achieving the purpose of quickly removing the height valve core sleeve. Furthermore, the sleeve 1 ensures that the transmission rod 2 and the valve body chamber are coaxial, and the rotation plane of the crank handle 4 is perpendicular to the axis of the transmission rod 2, thus avoiding damage to the valve core sleeve and the valve body chamber.

[0064] When using, please refer to Figure 9 As shown, remove the slide 3 from the transmission rod 2. Place the tool sleeve 1 onto the round opening on the valve body 10 where the valve core sleeve 11 is installed. On the other side of the valve body 10, place the slide 3 inside the valve body 10, ensuring that the slide 3 is at the bottom of the valve core sleeve 11 and concentric with it. Rotate the handle 4 to screw the transmission rod 2 into the threaded opening of the slide 3. During the screwing process, ensure that the sleeve 1 can fit into the round opening of the valve body and maintain stable contact. When the sleeve 1 is in stable contact with the round opening of the valve body 10 and the handle 4 has felt a certain force, use an appropriate force to shake the handle 4 to slowly move the valve core sleeve 11 upwards until the valve core sleeve 11 is completely moved out into the cavity 101 of the sleeve 1. This completes the disassembly of the valve core sleeve 11.

[0065] After completing the operation, remove the tool from the height valve body 10, separate the slide 3 from the transmission rod 2, and remove the shaft sleeve 11.

[0066] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tool for disassembling a valve core sheath of a high-speed train height valve, characterized in that, Comprising: a sleeve (1), a transmission rod (2) penetrating through the sleeve (1); and a sliding table (3) screw-transmitted with the transmission rod (2) and capable of being placed inside a valve body (10); the transmission rod (2) has a driving end and a free end capable of being suspended outside the sleeve (1); the driving end is rotationally connected with the sleeve (1) and fixedly connected with a driving member; wherein the sleeve (1) is formed with a chamber (101) accommodating a valve core sheath (11), so that the sleeve (1) abuts against the shaft sleeve end of the valve body (10) to drive the transmission rod (2) to rotate, and the sliding table (3) abuts against the valve core sheath (11) through an abutting surface (302) and drives the valve core sheath (11) to displace into the chamber (101) to be separated from the valve body (10).

2. The valve core sheath dismounting tool of the EMU height valve according to claim 1, characterized in that: a boss portion (301) concentric with a transmission hole opened in the sliding table (3) is formed on the side of the sliding table (3), a matching surface is formed on the side wall of the boss portion (301), and the abutting surface (302) is formed on the end surface of the sliding table (3).

3. The valve core sheath dismounting tool of the EMU height valve according to claim 2, characterized in that: the virtual circle formed by the outer contour of the sliding table (3) has a diameter smaller than the outer diameter of the valve core sheath (11) and larger than the inner diameter of the valve core sheath (11).

4. The valve core sheath dismounting tool of the EMU height valve according to claim 3, characterized in that: the sliding table (3) is a disc body, and a tangent surface (303) perpendicular to the abutting surface (302) is symmetrically processed on both sides of the disc body.

5. The valve core sheath dismounting tool of the EMU height valve according to claim 1, characterized in that: the inner diameter of the sleeve (1) is larger than the outer diameter of the valve core sheath (11) and smaller than the outer diameter of the shaft sleeve of the valve body (10).

6. The valve core sheath dismounting tool of the EMU height valve according to claim 5, characterized in that: one end of the sleeve (1) is formed with a base portion (102), a bearing (5) is installed on the base portion (102), the sleeve (1) is rotationally connected with the transmission rod (2) through the bearing (5), the other end of the sleeve (1) is formed with an overlapping section (103), the overlapping section (103) is sleeved on the outside of the shaft sleeve of the valve body (10), and an annular limiting surface (104) is formed inside the sleeve (1).

7. The valve core sheath dismounting tool of the EMU height valve according to claim 6, characterized in that: the base portion (102) is symmetrically opened with counterbores on both sides, and the bearings (5) are installed in the counterbores.

8. The valve core sheath dismounting tool of the EMU height valve according to claim 1, characterized in that: the driving member is a crank (4) configured in an L shape, and the top end of the vertical section of the L-shaped crank (4) is fixedly connected with the transmission rod (2).

9. The valve core sheath dismounting tool of the EMU height valve according to claim 8, characterized in that: The handle (4) comprises a connecting rod (401) and a handle rod (403), the bottom end of the connecting rod (401) is rotationally connected with the handle rod (403), and the top end of the connecting rod (401) is provided with a limiting hole (402).

10. The tool according to claim 1 or 9, characterized in that: The transmission rod (2) is a screw rod, one end of the screw rod is formed with a light shaft section (201), the light shaft section (201) is provided with a shoulder (202) at one end and a square limiting column (203) at the other end, and the light shaft section (201) is provided with a clamping groove at the end of the limiting column (203).

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