A motor train brake pipe switching device

Abstract

This utility model relates to the technical field of braking systems for single-car EMU trains, and discloses a EMU brake duct adapter, including two docking ends and a ball valve fixedly installed on the outer circumference of one of the docking ends. Each of the two docking ends has an L-shaped groove at one corresponding end. This EMU brake duct adapter, through the compression ring, allows the pressure transmitted via a push plate and push rod during the rotation of the ring, causing the compression ring to deform and tightly fit the L-shaped groove. This improves the sealing performance between the two docking ends, preventing leakage at the connection. Furthermore, the combination of a limiting plate and a slot allows the limiting plate to engage with the slot after the insert plate is inserted into the fixed frame, achieving rapid positioning and connection of the two corresponding connectors. Its advantages include fast installation speed and high sealing performance.

Description

Technical Field

[0001] This utility model relates to the technical field of braking systems for single-car EMUs, specifically a braking air duct adapter for EMUs. Background Technology

[0002] A single-car braking system is a braking device designed independently for each car of a high-speed train. It includes braking actuators (such as disc brakes, electric brakes, etc.), control units (such as brake electronic control units, BCU), sensors and pipelines, etc., and can respond to the vehicle's commands or autonomously (such as in case of a malfunction) to complete the braking function.

[0003] An existing patent (publication number: CN214565281U) discloses a high-speed train brake air duct adapter, relating to the technical field of high-speed train single-car brake system debugging. This device includes a stainless steel ball valve, a workshop pipeline connection end, a U-shaped perforated steel plate, a brake air duct connection end, a round perforated steel plate, and multiple bolt assemblies. Using this high-speed train brake air duct adapter, the charging and venting time can be reduced from 20 minutes to 2 minutes. This allows for rapid completion of vehicle charging and venting operations while controlling the charging and venting time, saving time spent in the debugging workshop for single cars and improving the debugging efficiency of the high-speed train single-car brake system. The adapter is compact and lightweight, easy for operators to carry, has low manufacturing costs, is simple to operate, and poses no safety hazards.

[0004] The aforementioned adapter is small and lightweight, easy for operators to carry, has low manufacturing cost, and is simple to operate. However, due to the high pressure inside the pipeline and the lack of a major sealing structure, when the pressure inside the pipeline increases, leakage occurs at the connection between the docking end and the workshop pipeline docking end, resulting in the pressure inside the brake air duct being unable to be maintained stably. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-speed train brake air pipe adapter, which has advantages such as improved sealing performance and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-speed train brake air pipe adapter, comprising two docking ends and a ball valve fixedly installed on the outer circumference of one of the docking ends, an L-shaped groove is provided at one corresponding end of each of the two docking ends, a concave sealing ring is provided between the two L-shaped grooves, and a compression ring is slidably connected to the inner wall of the two L-shaped grooves, with both compression rings contacting the protruding part of the sealing ring;

[0007] Both of the two mating ends have annular grooves on their outer circumferential surfaces. A rotating ring is rotatably connected to the outer surface of each annular groove. Multiple circumferentially distributed fixed frames are fixedly connected to the outer surface of one of the rotating rings. Multiple insert plates are fixedly connected to the outer surface of the other rotating ring. Each insert plate is slidably inserted into a corresponding fixed frame. A notch is provided on the side of each fixed frame facing away from the mating end. A slot is formed on the side of each insert plate. Each notch corresponds to the position of the adjacent slot. A limiting plate is rotatably connected to the outer surface of each fixed frame. The bottom end of each limiting plate is located in the corresponding slot.

[0008] Furthermore, the bottom end of each of the aforementioned limiting plates is chamfered.

[0009] The above solution allows the chamfered edge to facilitate the insertion of the limiting plate into the slot, reducing installation difficulty, increasing the installation speed between the two mating ends, improving installation efficiency, and reducing collision and wear between the limiting plate and the edge of the slot.

[0010] Furthermore, each of the extrusion rings has multiple push rods fixedly connected to its opposite side, and each push plate has a positioning notch on its side, with one end of each push plate located in the corresponding positioning notch.

[0011] The above solution allows the positioning notch to limit the position of the push plate, preventing it from shifting during the push rod process and ensuring stable contact between the push plate and the push rod. This, in turn, ensures that the extrusion ring applies stable pressure to the sealing ring, maintaining a good sealing effect.

[0012] Furthermore, a rectangular plate is formed on the outer surface of both mating ends, and a plurality of connecting rods are inserted between the two rectangular plates, with the other end of each connecting rod being fixed by a nut.

[0013] The above solution, through the cooperation of the connecting rod and nut, further enhances the connection strength between the two mating ends, making the entire adapter more stable and reliable when subjected to airflow pressure and external vibration, and improving the overall structural stability of the device.

[0014] Furthermore, each of the limiting plates is fixedly connected to the corresponding fixing frame by a torsion spring.

[0015] Through the above scheme, the deformation force of the torsion spring can push the bottom end of the limiting plate into the slot, preventing the limiting plate from separating from the slot and enabling the two mating ends to be stably connected.

[0016] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0017] This EMU brake duct adapter, through the compression ring, transmits pressure via a push plate and push rod during the rotation of the ring, causing the compression ring to deform and tightly fit the L-shaped groove. This improves the sealing performance between the two mating ends, preventing leakage at the connection. Furthermore, the combination of a limiting plate and a slot allows the limiting plate to engage with the slot after the insert plate is inserted into the fixed frame, enabling rapid positioning and connection of the two corresponding connectors. Its advantages include fast installation speed and high sealing performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a schematic diagram of the rotating ring structure of this application;

[0020] Figure 3 This is a schematic diagram of the push plate structure of this application;

[0021] Figure 4 This is a schematic diagram of the extrusion ring structure of this application;

[0022] Figure 5 This is a cross-sectional view of the overall structure of this application;

[0023] Figure 6 This is an exploded view of the docking end structure of this application.

[0024] In the picture:

[0025] 1. Connecting end; 2. Ball valve; 3. L-shaped groove; 4. Sealing ring; 5. Extrusion ring; 6. Annular groove; 7. Rotating ring; 8. Fixing frame; 9. Insert plate; 10. Notch; 11. Slot; 12. Limiting plate; 13. Push rod; 14. Push plate; 15. Positioning notch; 16. Rectangular plate; 17. Connecting rod; 18. Torsion spring. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] Please see Figures 1-6This embodiment of a high-speed train brake air pipe adapter includes two docking ends 1 and a ball valve 2 fixedly installed on the outer circumference of one of the docking ends 1. Each of the two docking ends 1 has an L-shaped groove 3 at one corresponding end. A concave sealing ring 4 is provided between the two L-shaped grooves 3. The sealing ring 4 can contact the inner wall of the two L-shaped grooves 3 through its concave upper end, thereby improving the sealing effect between the two docking ends 1. A compression ring 5 is slidably connected to the inner wall of the two L-shaped grooves 3. Both compression rings 5 ​​are in contact with the protruding part of the sealing ring 4. By providing a concave sealing ring 4, the sealing ring 4 can be tightly contacted with the two L-shaped grooves 3 under the compression of the compression rings 5, thereby improving the sealing performance between the two docking ends 1 and preventing internal airflow leakage.

[0028] Both mating ends 1 have annular grooves 6 on their outer circumferential surfaces. A rotating ring 7 is rotatably connected to the outer surface of each annular groove 6. Multiple circumferentially distributed fixing frames 8 are fixedly connected to the outer surface of one rotating ring 7, and multiple insert plates 9 are fixedly connected to the outer surface of the other rotating ring 7. Each insert plate 9 slidably engages with a corresponding fixing frame 8. This sliding engagement of the insert plate 9 with the fixing frame 8 allows for positioning of the two mating ends 1 during installation, facilitating subsequent docking and connection. Each fixing frame 8 has an opening on its side facing away from the mating end 1. A notch 10 is provided, and a slot 11 is formed on the side of each insert plate 9. Each notch 10 corresponds to the position of the adjacent slot 11. A limiting plate 12 is rotatably connected to the outer surface of each fixing frame 8. The bottom end of each limiting plate 12 is located in the corresponding slot 11. By setting the cooperation between the fixing frame 8, the insert plate 9, the limiting plate 12, and the slot 11, after the insert plate 9 is inserted into the corresponding fixing frame 8, the two mating ends 1 can be quickly fixed by the engagement of the limiting plate 12 and the slot 11, thereby improving the installation speed of the two mating ends 1.

[0029] Each limiting plate 12 has a chamfered bottom end, which facilitates the insertion of the limiting plate 12 into the slot 11, reduces installation difficulty, increases the installation speed between the two mating ends 1, improves installation efficiency, and reduces collision wear between the limiting plate 12 and the edge of the slot 11. Multiple push rods 13 are fixedly connected to the opposite side of each compression ring 5. One end of each push rod 13 passes through the corresponding L-shaped groove 3 and is located in the adjacent annular groove 6. The other end of each push rod 13 is spherical. Push plates 14 are fixedly connected to the corresponding sides of the two rotating rings 7. Each push plate 14 is arc-shaped, and the arc-shaped push plate 14 contacts the spherical end of the push rod 13, enabling... When the rotating ring 7 rotates, it reduces the friction between the push plate 14 and the push rod 13, allowing the push plate 14 to stably push the push rod 13 to slide. This allows the push plate 14 to apply pressure to the sealing ring 4, thereby making the sealing ring 4 in tight contact with the inner wall of the L-shaped groove 3, improving the sealing effect. Each push plate 14 has a positioning recess 15 on its side, and one end of each push plate 14 is located in the corresponding positioning recess 15. The positioning recess 15 can limit the position of the push plate 14, preventing the push plate 14 from shifting during the process of pushing the push rod 13, ensuring stable contact between the push plate 14 and the push rod 13, thereby ensuring that the compression ring 5 applies stable pressure to the sealing ring 4 and maintains a good sealing effect.

[0030] Rectangular plates 16 are formed on the outer surfaces of both docking ends 1. Multiple connecting rods 17 are inserted between the two rectangular plates 16. One end of each connecting rod 17 contacts the corresponding rectangular plate 16, and the other end of each connecting rod 17 is fixed by a nut. Each nut contacts the corresponding rectangular plate 16. Through the cooperation of the connecting rods 17 and the nuts, the connection strength between the two docking ends 1 is further enhanced, making the entire adapter more stable and reliable when subjected to airflow pressure and external vibration, and improving the overall structural stability of the device. Each limiting plate 12 is fixedly connected to the corresponding fixed frame 8 by a torsion spring 18. The deformation force of the torsion spring 18 can push the bottom end of the limiting plate 12 into the slot 11 to prevent the limiting plate 12 from separating from the slot 11, so that the two docking ends 1 can be stably connected.

[0031] The working principle of the above embodiment is as follows: First, the sealing ring 4 is installed between the L-shaped grooves 3 of the two mating ends 1. Then, the two mating ends 1 are inserted into the corresponding fixed frame 8 through the insert plate 9, so that the two mating ends 1 are connected together. When the insert plate 9 slides into place in the fixed frame 8, the limiting plate 12 will pass through the adjacent notch 10 and engage with the corresponding slot 11 under the action of the return force of the torsion spring 18, which can realize the quick fixation of the two mating ends 1. Then, the two rotating rings 7 are rotated synchronously, so that the rotating rings 7 can push the push rod 13 through the push plate 14, and the compression is applied to the extrusion ring 5 through the push rod 13. After being subjected to force, the two extrusion rings 5 ​​can push the sealing ring 4, so that the sealing ring 4 can deform and fill the connection between the two mating ends 1, thereby improving the sealing between the two mating ends 1. During this process, one end of the push rod 13 will enter the positioning notch 15, thereby limiting the push rod 13 and preventing the push rod 13 from resetting and affecting the sealing between the two mating ends 1.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor train brake pipe switching device, comprising two butt joint heads (1) and a ball valve (2) fixedly installed on the outer circumferential surface of one of the butt joint heads (1), characterized in that: Each of the two mating ends (1) has an L-shaped groove (3) at one end, and a concave sealing ring (4) is provided between the two L-shaped grooves (3). An extrusion ring (5) is slidably connected to the inner wall of the two L-shaped grooves (3), and the two extrusion rings (5) are in contact with the protruding part of the sealing ring (4). Both of the two docking ends (1) have annular grooves (6) on their outer circumferential surfaces. Each annular groove (6) has a rotating ring (7) rotatably connected to its outer surface. One of the rotating rings (7) has multiple fixed frames (8) arranged in a circular pattern fixedly connected to its outer surface. The other rotating ring (7) has multiple insert plates (9) fixedly connected to its outer surface. Each insert plate (9) is slidably inserted into a corresponding fixed frame (8). Each fixed frame (8) has a notch (10) on its side away from the docking end (1). Each insert plate (9) has a slot (11) formed on its side. Each notch (10) corresponds to the position of the adjacent slot (11). Each fixed frame (8) has a limiting plate (12) rotatably connected to its outer surface. The bottom end of each limiting plate (12) is located in the corresponding slot (11).

2. The brake pipe adapter of claim 1, wherein: The bottom of each of the limiting plates (12) is chamfered.

3. The brake pipe transfer device of a motor train set according to claim 1, characterized in that: Each of the extrusion rings (5) has multiple push rods (13) fixedly connected to one side opposite to each other. The other end of each push rod (13) is spherical. Each of the two rotating rings (7) has a push plate (14) fixedly connected to one side. Each push plate (14) is arc-shaped. Each push plate (14) has a positioning notch (15) on its side. One end of each push plate (14) is located in the corresponding positioning notch (15).

4. The brake pipe adapter of claim 1, wherein: The outer surfaces of the two mating ends (1) are each formed with a rectangular plate (16), and a plurality of connecting rods (17) are inserted between the two rectangular plates (16), and the other end of each connecting rod (17) is fixed by a nut.

5. A high-speed train brake air pipe adapter according to claim 1, characterized in that: Each of the limiting plates (12) is fixedly connected to the corresponding fixing frame (8) by a torsion spring (18).

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