Airtight supporting device for air spring system of urban rail vehicle

Abstract

The utility model discloses an airtight supporting device for an air spring system of an urban rail vehicle in the technical field of vehicle detection processes, and aims to solve the problems of vehicle body airtight detection and transportation. The sealing device comprises a supporting frame, a transverse sealing assembly and a longitudinal supporting assembly. The longitudinal supporting assemblies are symmetrically arranged on the two sides of the supporting frame. The longitudinal supporting assembly comprises a first motor, a first lead screw and a first nut. The first motor drives the vertically arranged first screw rod to rotate, so that the first nut moves up and down along the first screw rod; the transverse sealing assembly is arranged on the first nut; the transverse sealing assembly comprises a second motor, a second lead screw, a second nut and a sealing piece. A second motor drives a transversely arranged second screw rod to rotate, so that a second nut moves left and right along the second screw rod; the sealing piece is arranged above the second nut; the sealing piece comprises a supporting chassis and a positioning sealing column; and the positioning sealing column is arranged above the supporting chassis. The device is used for vehicle body detection and transfer, the vehicle body airtightness detection process is simplified, and the transfer safety is improved.

Description

Technical Field

[0001] The utility model relates to an airtight supporting device for an air spring system of an urban rail vehicle, belonging to the technical field of vehicle detection technology. Background Art

[0002] The air spring system of urban rail vehicles is an important component of the braking system, which mainly includes an air spring pipe system, a height valve, a differential pressure valve, an additional air chamber, a car body bolster air chamber, and an air spring; among them, the car body bolster air chamber interface is a smooth through hole facing the ground, and current technology cannot seal its interface through other effective solutions such as screw plugs. Before the existing urban rail vehicles are put off the vehicle, they are first supported by the car body frame seat on a dummy trolley or air cushion bracket to achieve the installation of vehicle components and the guide vehicle transportation, but it is impossible to achieve the sealing of the interface of the car body bolster air chamber of the air spring system. The support point of the existing dummy trolley or air cushion bracket for the upper body of the vehicle is close to the interface of the car body bolster air chamber. The air spring system cannot be effectively fixed by the separately designed sealing tooling or during transportation. When starting and stopping during transportation, the inertia makes the vehicle prone to movement, and even rollover may occur if the vibration is severe during transportation.

[0003] According to existing technology, a vehicle is tested for airtightness before being unloaded. However, since the upper and lower bodies are not yet connected, the air spring system interfaces are exposed, making it impossible to complete the airtightness test of the air spring system pipelines before the vehicle is unloaded. Therefore, the existing airtightness test of the air spring system can only be completed after the vehicle is unloaded, when the entire pipeline is airtight. However, after the upper and lower bodies are connected and unloaded, the upper body of the air spring system vehicle (such as the additional air chamber, differential pressure valve, and pipeline system) is located directly above the bogie. Leaks in the air spring system discovered during the pipeline airtightness test cannot be repaired due to the obstruction of the bogie. The leaks must be repaired after the vehicle is restarted and reworked, resulting in a huge waste of manpower, materials, and other costs.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an airtight support device for an urban rail vehicle air spring system, which can complete the sealing of the vehicle body air spring system and the support and fixation of the vehicle body before the urban rail vehicle is landed, thereby providing a stable support function for the vehicle production process and transportation process.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides an airtight support device for an air spring system of an urban rail vehicle, comprising a support frame, a transverse sealing assembly and a longitudinal support assembly; the longitudinal support assemblies are symmetrically arranged on both sides of the support frame; the longitudinal support assembly comprises a first motor, a first screw rod and a first nut; the first motor drives the vertically arranged first screw rod to rotate, so that the first nut moves up and down along the first screw rod; the transverse sealing assembly is arranged on the first nut;

[0008] The transverse sealing assembly includes a second motor, a second screw rod, a second nut and a seal; the second motor drives the transversely arranged second screw rod to rotate, so that the second nut moves left and right along the second screw rod; the seal is arranged above the second nut; the seal includes a support chassis and a positioning sealing column; the positioning sealing column is arranged above the support chassis.

[0009] Furthermore, the support frame includes a longitudinal beam, a transverse beam and a supporting column; the two ends of the two parallel transverse beams are respectively fixedly connected to the longitudinal beams; the bottoms of the two longitudinal beams are respectively fixedly connected to the two supporting columns.

[0010] Furthermore, a fixing plate extends from the inner side of the longitudinal beam; both ends of the cross beam are respectively fixed to the fixing plates on the two longitudinal beams; and a plurality of triangular first reinforcing ribs are provided between the fixing plate and the longitudinal beam.

[0011] Furthermore, the longitudinal support assembly further comprises a tubular support column with sealed ends; the two tubular support columns are symmetrically arranged on the support frame, and the top of the tubular support column is used to support the vehicle body; a longitudinal guide groove is opened in the axial direction of the tubular support column;

[0012] The first motor is fixed to the inner bottom of the tubular support column; the top end of the first screw rod is rotatably connected to the inner top of the tubular support column through a bearing, and the bottom end is fixedly connected to the shaft of the first motor; the transverse sealing assembly is fixedly connected to the first nut on the first screw rod through the longitudinal guide groove.

[0013] Furthermore, a buffer pad is provided on the top of the tubular support column.

[0014] Furthermore, a plurality of triangular second reinforcing ribs are provided between the tubular support column and the support frame.

[0015] Furthermore, the transverse sealing assembly further includes an integrally formed mounting seat, a connecting block, and a mounting plate; one end of the mounting seat is fixedly connected to the mounting plate, and the other end is fixedly connected to the connecting block; the mounting plate is used to fix the second motor; the connecting block is fixedly connected to the first nut via the longitudinal guide groove;

[0016] A transverse guide groove is formed on the upper end surface of the mounting seat; the shaft of the second motor is fixedly connected to the second screw rod disposed in the mounting seat; and the second nut is fixedly connected to the supporting chassis through the transverse guide groove.

[0017] Furthermore, the sealing member also includes a sealing gasket; the sealing gasket is sleeved on the positioning sealing column and is in contact with the supporting chassis.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present application provides a transverse sealing assembly and a longitudinal support assembly that are arranged in coordination before the urban rail vehicle lands. The longitudinal support assembly can not only support the urban rail vehicle as a whole, but also adjust the height of the transverse sealing assembly and the distance between the seals of the two transverse sealing assemblies so that they fit into the car body bolster air chamber interface and seal the car body bolster air chamber interface. This sealing operation can be implemented before the vehicle lands to assist in the vehicle body pipeline air tightness detection. It not only reduces the existing process steps of the vehicle body pipeline air tightness detection after the vehicle lands, but also can use the provided seals to seal the car body bolster air chamber interface, thereby improving the accuracy of the pipeline air tightness detection. In the existing method of detecting pipeline air tightness after the vehicle lands, the car body bolster air chamber interface has been assembled to the bogie and is blocked. Even if an air tightness problem is detected, the subsequent rework and repair will be labor-intensive and costly.

[0020] 2. After the pipeline air tightness test is completed, the vehicle body needs to be transferred to the next process. The vehicle body continues to be supported by the longitudinal support assembly. The seal of the transverse sealing assembly is inserted into the air chamber interface of the vehicle body pillow beam to restrict the vehicle body. During the start and stop of transfer, the vehicle body is restricted by the transverse sealing assembly, which can effectively prevent the vehicle from rolling over due to movement or shaking, thereby ensuring the safety of the vehicle body during transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an airtight support device for an urban rail vehicle air spring system provided by the present application;

[0022] Figure 2 yes Figure 1 A partial cross-sectional view of the connection between the longitudinal support assembly and the transverse sealing assembly;

[0023] Figure 3 This is a schematic diagram of the installation structure of the transverse sealing component;

[0024] Figure 4 yes Figure 3 Schematic diagram of part of the structure;

[0025] Figure 5 This is a schematic diagram of the assembly of the airtight support device and the vehicle body of the urban rail vehicle air spring system;

[0026] In the figure: 1. Support frame; 2. Longitudinal support assembly; 3. Transverse sealing assembly; 4. Vehicle body;

[0027] Longitudinal beam; 12. Horizontal beam; 13. Support column; 14. Fixed plate; 15. First reinforcement rib; 16. Second reinforcement rib;

[0028] First motor; 22, first screw rod; 23, first nut; 24, tubular support column; 25, longitudinal guide groove; 26, buffer pad;

[0029] 31. Second motor; 32. Second screw rod; 33. Second nut; 34. Seal; 35. Mounting seat; 36. Connecting block; 37. Mounting plate; 38. Horizontal guide groove;

[0030] 341. Support chassis; 342. Positioning sealing column; 343. Sealing gasket. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. Example

[0032] like Figures 1 to 5 As shown, the present application provides an airtight support device for an urban rail vehicle air spring system, comprising a support frame 1, a transverse sealing assembly 3 and a longitudinal support assembly 2. Figure 1 and Figure 2 The longitudinal support assembly 2 is symmetrically mounted on both sides of the support frame 1, and the vehicle body 4 is supported above the longitudinal support assembly 2 before landing or during transportation. Among them, the longitudinal support assembly 2 is provided with a first motor 21, a first screw rod 22 and a first nut 23. The first motor 21 is fixed vertically, and the first screw rod 22 is vertically fixed on the shaft of the first motor 21. The first screw rod 22 is threaded with a first nut 23 that is lifted up and down. The rotation of the first motor 21 drives the first screw rod 22 to rotate, so that the first nut 23 moves up and down along the first screw rod 22. The two transverse sealing assemblies 3 are respectively mounted on the first nuts 23 of the two longitudinal support assemblies 2.

[0033] like Figure 3 and Figure 4The transverse sealing assembly 3 includes a second motor 31, a second screw 32, a second nut 33, and a seal 34. The second motor 31 is positioned transversely, and its shaft is fixedly connected to the transversely positioned second screw 32. The second motor 31 drives the second screw 32 to rotate, causing the second nut 33 to move left and right along the screw 32. In other words, the two second nuts 33 move toward or away from each other. A seal 34 is fixedly mounted above the second nuts 33. This seal 34 includes a support base 341 and a positioning seal post 342. A positioning seal post 342 is fixedly mounted above the support base 341. The size of this positioning seal post 342 is adapted to the interface between the bolster and the air chamber of the vehicle body 4. After the longitudinal support assembly 2 supports the vehicle body 4, the first motor 21 within the longitudinal support assembly 2 is adjusted to rotate, causing the first nut 23 to move up and down relative to the first screw 22 to a certain height, thereby ensuring that the transverse sealing assembly 3 moves to a height that matches the interface between the bolster and the air chamber of the vehicle body 4. The second motor 31 is then adjusted to rotate, causing the second nut 33 to drive the positioning seal post 342 on the transverse seal assembly 3 to the docking position at the bolster air chamber interface of the vehicle body 4. The first motor 21 is then adjusted to rotate the first screw 22, driving the first nut 23 and the transverse seal assembly 3 upward, allowing the positioning seal post 342 to penetrate the bolster air chamber interface of the vehicle body 4, sealing and securing the position. This assembly not only facilitates pipeline airtightness testing before unloading the vehicle, but also provides a secure position for the vehicle body 4 during transport, preventing rollover and other potential sideways movements.

[0034] In some embodiments, as Figure 1 The support frame 1 is specifically configured to include longitudinal beams 11, transverse beams 12, and support columns 13. Two longitudinal beams 11 are spaced apart and arranged in parallel, and are connected and fixed together by two spaced apart and parallel transverse beams 12. Two support columns 13 are mounted at the bottom of each longitudinal beam 11. The support frame 1 assists the longitudinal support assembly 2 in increasing the support height, facilitating the inspection and transport of the vehicle body 4.

[0035] Optionally, a fixing plate 14 is provided at the inner extension of the longitudinal beam 11, and the cross beam 12 is mounted on the fixing plate 14 to form an assembly with the longitudinal beam 11. This installation method can be welded. A plurality of first reinforcing ribs 15 are connected at intervals between the fixing plate 14 and the longitudinal beam 11 to increase the overall strength of the support frame 1 and enhance the stability of the device.

[0036] In some implementations, such as Figure 2The longitudinal support assembly 2 includes a tubular support column 24 that supports the vehicle body 4, and both ends of the tubular support column 24 are in a sealed state. The two tubular support columns 24 are symmetrically mounted on the support frame 1. The upper end of the tubular support column 24 is used to support the vehicle body 4, and the lower end is fixedly assembled on the support frame 1. A longitudinal guide groove 25 is provided in the axial direction of the tubular support column 24. The first motor 21 is vertically fixedly mounted on the inner bottom of the tubular support column 24, and the top end of the first screw rod 22 is rotatably mounted on the inner top of the tubular support column 24 through a bearing. The bottom end of the first screw rod 22 is fixedly connected to the shaft of the first motor 21. The transverse sealing assembly 3 is fixedly connected to the first nut 23 on the first screw rod 22 through the longitudinal guide groove 25.

[0037] Optionally, a cushion block 26 is mounted on the top of the tubular support column 24 to protect the vehicle body 4 from damage during placement and support. Multiple triangular second reinforcing ribs 16 are fixedly connected between the tubular support column 24 and the support frame 1. These second reinforcing ribs 16 provide stability and strength to the tubular support column 24.

[0038] Optional, such as Figure 3 and Figure 4 The transverse seal assembly 3 also includes an integrally formed mounting base 35, a connecting block 36, and a mounting plate 37. The mounting base 35 is mounted on one end with the mounting plate 37, and the connecting block 36 is mounted on the other end. The connecting block 36 is configured to mate with the first nut 23, while the mounting plate 37 is configured to securely mount the second motor 31. The connecting block 36 is secured to the first nut 23 and the longitudinal guide slot 25 of the tubular support column 24.

[0039] A transverse guide groove 38 is defined on the upper end surface of the mounting seat 35. The shaft of the second motor 31 extends through the mounting seat 35 and is fixedly connected to the second screw rod 32 disposed therein. A second nut 33 is threadedly engaged with the second screw rod 32 and is fixedly connected to the support chassis 341 via the transverse guide groove 38. When the second motor 31 rotates the second screw rod 32, the second nut 33 drives the entire transverse seal assembly 3 to repeatedly move within the confines of the transverse guide groove 38. The transverse guide groove 38 is pre-configured to restrict the adjustment range during the positioning process based on the relative positioning range of the bolster air chamber interface of the vehicle body 4. This shortens the movement range of the seal 34 during the adjustment process, facilitates rapid positioning at the bolster air chamber interface of the vehicle body 4, and improves the speed and efficiency of the positioning process.

[0040] Optionally, the seal 34 also includes a sealing gasket 343. The sealing gasket 343 is mounted on the positioning sealing post 342 and in contact with the supporting chassis 341. When the positioning sealing post 342 is inserted into the body 4 bolster air chamber interface to seal, the sealing gasket 343 seals the periphery of the body 4 bolster air chamber interface. This sealing gasket 343 not only improves the sealing performance of the body 4 bolster air chamber interface, but also protects the periphery of the body 4 bolster air chamber interface from wear due to the action of the sealing gasket 343. Example

[0041] Combine Figure 5 This embodiment provides an installation method of the airtight support device for the urban rail vehicle empty spring system according to the urban rail vehicle empty spring system airtight support device provided in Example 1:

[0042] 1. First, move the vehicle body 4 and place it on the longitudinal support assembly 2 for support.

[0043] Second, first control the first motor 21 to rotate, so that the first screw rod 22 rotates and drives the first nut 23 and the transverse sealing assembly 3 to move upward close to the vehicle body 4; then control the second motor 31 to rotate, so that the second screw rod 32 rotates and drives the second nut 33 and the sealing member 34 to face the bolster air chamber interface of the vehicle body 4.

[0044] 3. Then control the first motor 21 to rotate, so that the first screw rod 22 rotates and drives the first nut 23 and the transverse sealing assembly 3 to move upward, so that the sealing member 34 enters the air chamber interface of the bolster of the vehicle body 4, completing the support limit.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0046] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An airtight support device for an urban rail vehicle air spring system, characterized in that: The invention comprises a support frame, a transverse sealing assembly and a longitudinal support assembly; the longitudinal support assembly is symmetrically arranged on both sides of the support frame; the longitudinal support assembly comprises a first motor, a first screw rod and a first nut; the first motor drives the vertically arranged first screw rod to rotate, so that the first nut moves up and down along the first screw rod; the transverse sealing assembly is arranged on the first nut; The transverse sealing assembly includes a second motor, a second screw rod, a second nut and a seal; the second motor drives the transversely arranged second screw rod to rotate, so that the second nut moves left and right along the second screw rod; the seal is arranged above the second nut; the seal includes a support chassis and a positioning sealing column; the positioning sealing column is arranged above the support chassis.

2. The airtight support device for the urban rail vehicle air spring system according to claim 1, characterized in that: The support frame includes a longitudinal beam, a transverse beam and a supporting column; the two ends of the two parallel transverse beams are respectively fixedly connected to the longitudinal beams; the bottoms of the two longitudinal beams are respectively fixedly connected to the two supporting columns.

3. The airtight support device for the urban rail vehicle air spring system according to claim 2, characterized in that: A fixing plate extends from the inner side of the longitudinal beam; both ends of the cross beam are respectively fixed to the fixing plates on the two longitudinal beams; and a plurality of triangular first reinforcing ribs are provided between the fixing plate and the longitudinal beam.

4. The airtight support device for the urban rail vehicle air spring system according to claim 1 or 2, characterized in that: The longitudinal support assembly further includes a tubular support column with sealed ends; the two tubular support columns are symmetrically arranged on the support frame, and the top of the tubular support column is used to support the vehicle body; a longitudinal guide groove is opened in the axial direction of the tubular support column; The first motor is fixed to the inner bottom of the tubular support column; the top end of the first screw rod is rotatably connected to the inner top of the tubular support column through a bearing, and the bottom end is fixedly connected to the shaft of the first motor; the transverse sealing assembly is fixedly connected to the first nut on the first screw rod through the longitudinal guide groove.

5. The airtight support device for the urban rail vehicle air spring system according to claim 4, characterized in that: A buffer block is provided on the top of the tubular support column.

6. The airtight support device for the urban rail vehicle air spring system according to claim 4, characterized in that: A plurality of triangular second reinforcing ribs are provided between the tubular support column and the support frame.

7. The airtight support device for the urban rail vehicle air spring system according to claim 4, characterized in that: The transverse sealing assembly further includes an integrally formed mounting seat, a connecting block, and a mounting plate; one end of the mounting seat is fixedly connected to the mounting plate, and the other end is fixedly connected to the connecting block; the mounting plate is used to fix the second motor; the connecting block is fixedly connected to the first nut via the longitudinal guide groove; A transverse guide groove is formed on the upper end surface of the mounting seat; the shaft of the second motor is fixedly connected to the second screw rod disposed in the mounting seat; and the second nut is fixedly connected to the supporting chassis through the transverse guide groove.

8. The airtight support device for the urban rail vehicle air spring system according to claim 1, characterized in that: The sealing member further comprises a sealing gasket; the sealing gasket is sleeved on the positioning sealing column and contacts the supporting chassis.

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