A V-shaped ring assembling tool for a valve body of a motor train unit
By designing a V-shaped ring assembly fixture for the EMU valve body, the problems of short service life and difficult replacement of the HOSE valve inner diaphragm were solved, enabling rapid installation and resource reuse, improving maintenance efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY GUANGZHOU BUREAU GRP CO LTD GUANGZHOU EMU
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-07
AI Technical Summary
The service life of the inner diaphragm of the HOSE valve in high-speed trains is relatively short. The existing replacement method requires returning the valve to the factory for replacement, which results in a long replacement cycle and high cost. In addition, manual replacement cannot guarantee that the support ring is installed in place, which can easily lead to HOSE valve failure.
Design a V-ring assembly fixture for a high-speed train valve body, including a positioning seat, a mounting platform, and a diffuser slider. The diffuser slider is moved within a sliding groove by a mounting rod, enabling rapid installation of the V-ring. Spring rings and limit rings are used to ensure stable expansion.
This technology enables the rapid installation of the internal support ring of the HOSE valve, improving maintenance efficiency, reducing maintenance costs, and allowing for the reuse of used HOSE valves.
Smart Images
Figure CN224464103U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of EMU maintenance technology, specifically to an assembly tool for a V-ring valve body of an EMU. Background Technology
[0002] The sewage pipe design of the high-speed train toilet system is relatively complex. HOSE valves are used in many parts of the system. The HOSE valve opens and closes the sewage pipe by inflating the inner diaphragm with air, causing the diaphragm to deform. Under normal conditions, the HOSE valve is in the open state. When the HOSE valve is working, the air pressure squeezes and deforms the inner diaphragm to cut off the sewage. The two ends of the inner diaphragm are sealed and fixed in the valve body by V-shaped support rings and plugs.
[0003] Because the HOSE valve operates by repeatedly deforming its inner diaphragm, the lifespan of the inner diaphragm is relatively short. Once the inner diaphragm reaches the end of its lifespan, the HOSE valve will be scrapped as a whole. Although replacing the inner diaphragm can effectively extend the lifespan of the HOSE valve, the current replacement method is mostly to return it to the factory for replacement, which has a long replacement cycle and high replacement cost. In the EMU maintenance workshop, manual replacement cannot guarantee that the support ring is installed in place at the end of the inner diaphragm, which can easily cause the HOSE valve to malfunction after maintenance.
[0004] In view of the above-mentioned defects, the creator of this utility model has finally obtained this utility model after a long period of research and practice. Utility Model Content
[0005] To address the aforementioned technical deficiencies, the present invention provides a V-ring assembly fixture for a high-speed train valve body, comprising a positioning seat, a mounting platform, and several diffuser sliders. The mounting platform is shaped like a truncated cone. The positioning seat has a connecting hole at its center, and an annular connecting groove is provided within the wall of the connecting hole. One end of the diffuser slider is movably disposed within the connecting groove. A sliding wedge is provided on the side of the diffuser slider closest to the mounting platform. Each sliding wedge has a corresponding sliding groove on the inclined circular surface of the mounting platform. Each sliding wedge is disposed in a corresponding sliding groove, and the extension direction of each sliding groove is on the same plane as the axis of the mounting platform. A mounting rod is fixedly mounted on the mounting platform along its axis, passing through the connecting hole. A limit groove is provided on the side of the diffuser slider away from the mounting platform, and a spring ring is fitted within each limit groove.
[0006] Preferably, each of the diffusion sliders is evenly distributed in a ring around the axis of the mounting platform.
[0007] Preferably, the cross-section of the diffuser slider is fan-shaped, and the centers of the inner and outer arcs of the diffuser slider cross-section are both located on the axis of the mounting platform. The surface of the diffuser slider near the mounting platform is an expansion contact surface, and the inclined circular surface of the expansion contact surface corresponding to the mounting platform is set as an inclined arc surface.
[0008] Preferably, the sliding wedge is disposed on the expansion contact surface, the sliding wedge is provided with a straight extension length, and the width of the sliding wedge is correspondingly set to the groove width of the sliding groove.
[0009] Preferably, the sliding groove divides the inclined circular surface of the mounting platform into evenly distributed wedge-shaped mating surfaces, and the two sides of the expanding contact surface are respectively in contact with the two wedge-shaped mating surfaces.
[0010] Preferably, one end of the diffuser slider is connected to the snap-fit block via an extension section. The extension section and the snap-fit block are disposed on the side of the diffuser slider near the mounting rod, and the extension section and the snap-fit block form a positioning groove at the end of the diffuser slider. A circular limiting ring is disposed in the connecting groove, and the limiting ring is disposed in each of the positioning grooves. Each snap-fit block is disposed in the connecting groove, and the limiting ring and the snap-fit block form a snap-fit limiting.
[0011] Preferably, the connection between the extension section and the diffuser slider adopts a rounded transition.
[0012] Preferably, the positioning seat includes a diffuser base, a mating platform, and a slider limiting platform arranged sequentially. The diffuser base, the mating platform, and the slider limiting platform are all cylindrical and coaxially arranged. The connecting hole passes through the diffuser base, the mating platform, and the slider limiting platform.
[0013] Preferably, the cross-sectional diameters of the diffuser base, the mating platform, and the slider limiting platform decrease sequentially, the cross-sectional diameter of the mating platform is set to match the inner diameter of the valve body of the EMU, and the limiting ring is set inside the slider limiting platform.
[0014] Preferably, one end of the mounting rod is fixedly connected to the mounting platform, and the other end is provided with a threaded connection section, which is connected to the power component.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model can realize the rapid installation of the support ring of the HOSE valve at the end of the inner diaphragm, so that after the inner diaphragm of the HOSE valve reaches the end of its service life, the maintenance of the HOSE valve of the EMU can be carried out by replacing the inner diaphragm of the HOSE valve, which significantly improves the maintenance efficiency. At the same time, the maintenance cost of the HOSE valve is reduced from the overall cost of the HOSE valve to the cost of the inner diaphragm of the HOSE valve, and the waste HOSE valve can be reused to realize the reuse of resources. Attached Figure Description
[0016] Figure 1 A three-dimensional structural view of the assembly fixture for the V-ring valve body of the EMU;
[0017] Figure 2 This is a sectional view of the connection structure of the mounting platform;
[0018] Figure 3 A cross-sectional view of the connection structure of the V-ring assembly tooling for the valve body of the EMU;
[0019] Figure 4 This is a top view of the structure of the diffuser slider.
[0020] The numbers in the diagram represent:
[0021] 1-Mounting platform; 2-Expanding slider; 3-Spring ring; 4-Expanding base; 5-Matching platform; 6-Slider limiting platform; 7-Mounting rod; 8-Wedge mating surface; 9-Connecting groove; 11-Sliding groove; 21-Sliding wedge; 22-Limiting groove; 23-Extension section; 24-Snap-fit block; 25-Positioning groove; 91-Limiting ring. Detailed Implementation
[0022] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.
[0023] Example 1
[0024] like Figure 1 , Figure 2 and Figure 3 As shown, Figure 1 A three-dimensional structural view of the assembly fixture for the V-ring of the valve body of the high-speed train. Figure 2 This is a sectional view of the connection structure of the mounting platform; Figure 3 A cross-sectional view of the connection structure of the V-ring assembly tooling for the valve body of the EMU.
[0025] The V-shaped ring assembly fixture for the valve body of the high-speed train of this utility model includes a positioning seat, a mounting platform 1, and a plurality of diffuser sliders 2. The mounting platform 1 is shaped like a frustum of a cone, and each of the diffuser sliders 2 is evenly distributed in a ring around the axis of the mounting platform 1. The positioning seat has a connecting hole at its center, and an annular connecting groove 9 is provided in the wall of the connecting hole. One end of each diffuser slider 2 is movably disposed in the connecting groove 9. A sliding wedge 21 is provided on the side of each diffuser slider 2 near the mounting platform 1. Each sliding wedge 21 is provided with a sliding groove 11 corresponding to the inclined circular surface of the mounting platform 1. Each sliding wedge 21 is disposed one-to-one in the sliding groove 11. The extension directions of the sliding grooves 11 are all set on the same plane as the axis of the mounting platform 1, thereby realizing the radial expansion of each of the diffusion sliders 2 along the sliding grooves 11; a mounting rod 7 is fixedly set on the mounting platform 1 along the axis of the mounting platform 1, the mounting rod 7 passes through the connecting hole, so that the mounting platform 1 can be driven to move axially after being set in the EMU valve body; a limiting groove 22 is provided on the side of the diffusion slider 2 away from the mounting platform 1, and a spring ring 3 is sleeved in each of the annularly distributed limiting grooves 22, so that the diffusion slider 2 is attached and fixed to the mounting platform 1 under the elastic force of the spring ring 3.
[0026] The mounting rod 7 drives the mounting platform 1 to move axially, thereby radially compressing each of the expansion sliders 2 through the inclined circular surface of the mounting platform 1. Since one end of the expansion slider 2 is limited by the connecting groove 9, the other end of the expansion slider 2 is radially expanded stably along the sliding groove 11. This causes the V-shaped ring fitted on the outer ring of the expansion slider 2 to be subjected to uniform outward compressive force, thereby achieving the purpose of installing the V-shaped ring.
[0027] like Figure 4 As shown, Figure 4 This is a top view of the structure of the diffusion slider 2. Specifically, the cross-section of the diffusion slider 2 is fan-shaped, and the centers of the inner and outer circular arcs of the cross-section of the diffusion slider 2 are both located on the axis of the mounting platform 1. The surface of the diffusion slider 2 closest to the mounting platform 1 is the expansion contact surface, and the inclined circular surface corresponding to the expansion contact surface of the mounting platform 1 is set as an inclined arc surface. Through the axial movement of the mounting platform 1, the inclined circular surface is pressed against the diffusion slider 2, thereby achieving uniform compression and expansion of each diffusion slider 2 by the mounting platform 1.
[0028] The sliding wedge 21 is disposed on the expansion contact surface. The sliding wedge 21 is provided with a straight extension length. The cross-sectional width of the sliding wedge 21 is corresponding to the groove width of the sliding groove 11 to ensure that the sliding wedge 21 moves stably within the sliding groove 11.
[0029] The sliding groove 11 divides the inclined circular surface of the mounting platform 1 into evenly distributed wedge-shaped mating surfaces 8. The two sides of the expansion contact surface are respectively in contact with the two wedge-shaped mating surfaces 8 to ensure the stability of the movement of the expansion slider 2.
[0030] One end of the diffuser slider 2 is connected to the snap-fit block 24 via an extension section 23. The extension section 23 and the snap-fit block 24 are disposed on the side of the diffuser slider 2 near the mounting rod 7, and the extension section 23 and the snap-fit block 24 form a positioning groove 25 at the end of the diffuser slider 2. A circular limiting ring 91 is disposed in the connecting groove 9. The limiting ring 91 is disposed in each of the positioning grooves 25. Each snap-fit block 24 is disposed in the connecting groove 9. The limiting ring 91 and the snap-fit block 24 form a snap-fit limiting, thereby ensuring that the end of the diffuser slider 2 is confined within the connecting groove 9 and expands outward.
[0031] The connection between the extension section 23 and the diffuser slider 2 is made of arc transition, so that when the diffuser slider 2 expands outward, the limiting ring 91 contacts and moves relative to the arc transition position, which facilitates the smooth outward expansion of the diffuser slider 2.
[0032] This invention enables the rapid installation of the support ring within the HOSE valve at the end of the inner diaphragm. This allows for the replacement of the HOSE valve inner diaphragm after it reaches the end of its service life, significantly improving maintenance efficiency. Simultaneously, it reduces the maintenance cost of the HOSE valve from the overall cost of the valve to the cost of the inner diaphragm, enabling the reuse of discarded HOSE valves and achieving resource recycling.
[0033] Example 2
[0034] The positioning seat includes a diffuser base 4, a mating platform 5, and a slider limiting platform 6 arranged sequentially. The diffuser base 4, the mating platform 5, and the slider limiting platform 6 are configured as coaxial cylindrical structures. The connecting hole is located on the axis of the positioning seat. The cross-sectional diameters of the diffuser base 4, the mating platform 5, and the slider limiting platform 6 decrease sequentially. The cross-sectional diameter of the mating platform 5 is matched with the inner diameter of the valve body of the EMU. The limiting ring 91 is located inside the slider limiting platform 6.
[0035] The protrusion formed between the mating platform 5 and the diffuser base 4 facilitates the locking and positioning at the end of the EMU valve body. The mating platform 5 extends into the EMU valve body for position fixation. The slider limiting platform 6 and the mating platform 5 form a protrusion gap, which facilitates the diffuser slider 2 to expand radially through the gap.
[0036] When no radial expansion is performed, the maximum diameter of the annular structure formed by the arrangement of the diffuser sliders 2 is smaller than the cross-sectional diameter of the mating platform 5, which facilitates the insertion of each diffuser slider 2 into the inside of the EMU valve body and into the V-ring. When the diffuser slider 2 is radially expanded from the center of the V-ring and squeezed radially, the diffuser slider 2 will be expanded to the same width as the slider limiting platform 6, and the spring ring 3 will also be opened to the maximum extent, thereby installing the V-ring in place.
[0037] Preferably, one end of the mounting rod 7 is fixedly connected to the mounting platform 1, and the other end is provided with a threaded connection section, which is connected to a power component to provide axial pushing and pulling force to the mounting platform 1.
[0038] Example 3
[0039] In a specific embodiment, the six expansion sliders 2 are fixed on the slider limiting platform 6 and arranged at equal intervals around the circumference of the mounting platform 1. The mounting rod 7 pushes the expansion sliders 2 to move radially on the expansion base 4 through the mounting platform 1, and is tightened and reset by the spring ring 3. The six expansion sliders 2 simultaneously expand the V-ring outward to achieve the purpose of installing the V-ring.
[0040] The mounting rod 7 is a long rod with a cross-sectional radius of 7mm and a length of 180mm. The mounting platform 1 has a maximum cross-sectional radius of 23mm. The inclined circular surface of the mounting platform 1 is evenly cut into 6 wedge-shaped mating surfaces 8 by the 6 sliding grooves 11. The diffuser slider 2 is an inclined boss with positioning grooves 25 and limiting grooves 22 on its outer side, which are evenly distributed in a circumferential array. The spring chain is a spring chain that surrounds the limiting grooves 22 of the circumferentially arranged diffuser slider 2. The diffuser base 4 has a cross-sectional radius of 54mm. The mating platform 5 has a cross-sectional radius of 27mm and sits on the diffuser base 4. The slider limiting platform 6 has a cross-sectional radius of 24mm. The bottom ring of the sliding groove 11 has a radius of 20mm and is used to place the mounting rod 7 and the diffuser slider 2.
[0041] The threaded connection section is configured with an M8 thread and a thread length of 20mm, which is for installation and fixation with the worktable of the power component.
[0042] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.
Claims
1. A V-type ring assembly tool for a motor train vehicle valve body, characterized in that, The device includes a positioning base, a mounting platform, and several diffusion sliders. The mounting platform is truncated cone-shaped. The positioning base has a connecting hole at its center, and the connecting hole has an annular connecting groove inside its wall. One end of the diffusion slider is movably disposed within the connecting groove. A sliding wedge is provided on the side of the diffusion slider closest to the mounting platform. Each sliding wedge has a corresponding sliding groove on the inclined circular surface of the mounting platform. Each sliding wedge is disposed in a corresponding sliding groove, and the extension direction of each sliding groove is on the same plane as the axis of the mounting platform. A mounting rod is fixedly disposed on the mounting platform along its axis, passing through the connecting hole. A limit groove is provided on the side of the diffusion slider away from the mounting platform, and a spring ring is fitted within each limit groove.
2. The EMU valve body V-ring assembly tool of claim 1, wherein, Each of the aforementioned diffuser sliders is evenly distributed in a ring around the axis of the mounting platform.
3. The EMU valve body V-ring assembly tool of claim 2, wherein, The diffuser slider has a fan-shaped cross-section, and the centers of the inner and outer arcs of the diffuser slider's cross-section are both located on the axis of the mounting platform. The surface of the diffuser slider near the mounting platform is an expansion contact surface, and the inclined circular surface of the expansion contact surface corresponding to the mounting platform is set as an inclined arc surface.
4. The EMU valve body V-ring assembly tool of claim 3, wherein, The sliding wedge is disposed on the expansion contact surface, the sliding wedge is provided with a straight extension length, and the width of the sliding wedge is provided corresponding to the groove width of the sliding groove.
5. The EMU valve body V-ring assembly tool of claim 3, wherein, The sliding groove divides the inclined circular surface of the mounting platform into evenly distributed wedge-shaped mating surfaces, and the two sides of the expansion contact surface are respectively in contact with the two wedge-shaped mating surfaces.
6. The EMU valve body V-ring assembly tool of claim 3, wherein, One end of the diffuser slider is connected to the snap-fit block via an extension section. The extension section and the snap-fit block are located on the side of the diffuser slider near the mounting rod, and the extension section and the snap-fit block form a positioning groove at the end of the diffuser slider. A circular limiting ring is provided in the connecting groove, and the limiting ring is also provided in each of the positioning grooves. Each snap-fit block is provided in the connecting groove, and the limiting ring and the snap-fit block form a snap-fit limiting.
7. The EMU valve body V-ring assembly tool of claim 6, wherein, The connection between the extension section and the diffuser slider is achieved by a circular arc transition.
8. The EMU valve body V-ring assembly tool of claim 6, wherein, The positioning seat includes a diffuser base, a mating platform, and a slider limiting platform arranged sequentially. The diffuser base, the mating platform, and the slider limiting platform are all cylindrical and coaxially arranged. The connecting hole passes through the diffuser base, the mating platform, and the slider limiting platform.
9. The EMU valve body V-ring assembly tool of claim 8, wherein, The cross-sectional diameters of the diffuser base, the mating platform, and the slider limiting platform decrease sequentially. The cross-sectional diameter of the mating platform is set to match the inner diameter of the valve body of the EMU. The limiting ring is set inside the slider limiting platform.
10. The EMU valve body V-ring assembly tool of claim 1, wherein, One end of the mounting rod is fixedly connected to the mounting platform, and the other end is provided with a threaded connection section, which is connected to the power component.