Assembly tool for pantograph air bag and sealing ring

Abstract

This utility model discloses an assembly fixture for a pantograph airbag and a sealing collar, relating to the technical field of pantograph airbag assembly fixtures. The assembly fixture includes a base plate and a top plate connected by a column, a first positioning component and a second positioning component both mounted on the base plate, a third positioning component and a uniform extrusion device both mounted on the top plate. The first positioning component is used to position the flange structure; the second and third positioning components are both used to position the sealing collar; the uniform extrusion device is used to cause uniform radial deformation of the flange structure. For the structure of the airbag and sealing collar, the assembly fixture, composed of the base plate, column, top plate, first positioning component, second positioning component, third positioning component, and uniform extrusion device, allows for convenient assembly of the two sealing collars at both ends of the airbag, avoiding the drawbacks of manual assembly, ensuring the airbag is not damaged during regeneration, controlling the assembly process, and ensuring product assembly consistency.

Description

Technical Field

[0001] This utility model relates to the field of pantograph airbag assembly tooling technology, specifically, to an assembly tooling for a pantograph airbag and a sealing collar. Background Technology

[0002] An airbag pantograph uses compressed air to pressurize the inside of an airbag, causing it to expand and contract. A steel cable converts the linear motion of the airbag into rotational motion, raising and lowering the upper and lower arms of the pantograph to contact and disconnect from the power grid, thus achieving the function of drawing electricity. Therefore, the positional relationship between the airbag and the sealing collars at both ends directly affects the airbag's trajectory and the pantograph's raising state.

[0003] 1. Deviation in the airbag's operating trajectory will shorten the lifespan of the airbag and related connecting parts inside the airbag, making continuous tooling impossible and causing significant quality risks.

[0004] 2. Instability in the raised state will cause significant variations in the contact force between the carbon sliding plate and the power grid, and may also cause the connecting pin inside the airbag to bend and deform, resulting in jamming and serious safety accidents.

[0005] 3. Excessive contact force causes excessive impact on the carbon slide plate at the span connection, resulting in excessive wear or cracking of the carbon slide plate and causing abnormal vehicle operation.

[0006] 4. Insufficient contact force will cause the carbon sliding plate to detach from the power grid by too much distance and for too long, resulting in severe arcing, which will affect the normal operation of the locomotive.

[0007] Therefore, the assembly between the airbag and the sealing collar is crucial. It is essential to ensure that the corresponding fixing nuts of the sealing collars at both ends are on the same axis to guarantee that the airbag's extension and contraction trajectory remains vertical. Strict control is required during assembly to ensure the positional stability of the airbag and sealing collar after installation. Currently, manual assembly is generally used, and the assembly process is as follows:

[0008] 1. Due to the significant difference between the diameter of the airbag opening (outer diameter of the flange structure in this technical solution) and the diameter of the sealing ring opening (inner diameter of the sealing ring in this technical solution): the difference between the airbag opening diameter (Ф160mm) and the sealing ring opening diameter (Ф135mm) is 160-135=25mm. It is extremely difficult to pass the Ф160mm diameter airbag step through the 135mm hole in the sealing ring; only a deformation method can be adopted.

[0009] 1. Squeeze the airbag opening flat (this process will cause severe deformation of the airbag body, forming an acute angle after flattening, which will cause serious damage to the airbag body).

[0010] 2. Insert the flattened part of the airbag into one side of the sealing collar at an angle;

[0011] 3. Use a flathead screwdriver to insert between the sealing collar and the airbag neck, and gradually pry up the airbag neck flange (this process may cause some damage to the airbag and sealing collar, leaving potential hazards that are uncontrollable). Utility Model Content

[0012] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an assembly tool for the pantograph airbag and the sealing collar.

[0013] The objective of this utility model is achieved through the following technical solution:

[0014] An assembly fixture for a pantograph airbag and a sealing collar is disclosed. The airbag has a cylindrical structure, with flange structures at both ends. The central axes of the two flange structures are collinear with the central axis of the airbag. The sealing collar has a circular structure, with four nuts on the same side. The central axes of the four nuts are arranged in a circumferential array about the central axis of the sealing collar, and the inner diameter of the sealing collar is smaller than the outer diameter of the flange structure. The fixture includes a base plate and a top plate connected by a column, a first positioning component and a second positioning component both disposed on the base plate, a third positioning component and a uniform extrusion device both disposed on the top plate. The first positioning component is used to position the flange structure. The second and third positioning components are both used to position the sealing collar. The uniform extrusion device is used to cause uniform radial deformation of the flange structure.

[0015] Furthermore, in this utility model, the first positioning component includes at least two arc-shaped positioning blocks arranged in a circumferential array on the base plate, the centers of the two arc-shaped positioning blocks are collinear, and the outer diameter of any of the arc-shaped positioning blocks is the same as the through diameter of the flange structure.

[0016] Furthermore, in this utility model, the second positioning component includes four positioning posts arranged in a circumferential array on the base plate, the central axes of the four positioning posts are parallel to each other, and the center line of the array of the four positioning posts is collinear with the center of any of the arc-shaped positioning blocks.

[0017] Furthermore, in this utility model, the third positioning component includes four positioning rods passing through the top plate. Any of the positioning rods is slidably connected to the top plate, and the sliding direction of any of the positioning rods is parallel to the central axis of any of the positioning posts. The four positioning rods are arranged in a circular array about the center line of the array of the four positioning posts, and the central axes of the four positioning rods are collinear with the central axes of the four positioning posts. The end of any of the positioning rods near the positioning post is provided with an external thread that is compatible with the nut.

[0018] Furthermore, in this utility model, the above-mentioned uniform extrusion device includes a puller disposed on the top plate, wherein the central axis of the spiral rod of the puller is collinear with the center line of the array of four positioning rods.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides an assembly fixture for a pantograph airbag and a sealing collar. The fixture, designed for the structure of the airbag and sealing collar, consists of a base plate, a column, a top plate, a first positioning component, a second positioning component, a third positioning component, and a uniform extrusion device. This fixture facilitates the assembly of the two sealing collars onto both ends of the airbag, avoiding the drawbacks of manual assembly, ensuring the airbag is not damaged during regeneration, controlling the assembly process, and ensuring product assembly consistency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the airbag being assembled on the base according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the assembly tooling according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the assembly tooling according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the airbag according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the sealing collar according to an embodiment of the present invention.

[0026] In the diagram: 101-Airbag; 201-Flange structure; 301-Sealing collar; 401-Nut; 501-Base plate; 502-Top plate; 503-Arc-shaped positioning plate; 504-Positioning post; 505-Positioning rod; 506-Puller; 5061-Screw rod. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Please see Figures 1-5 This utility model provides a technical solution:

[0029] An assembly fixture for a pantograph airbag and a sealing collar is provided. The airbag 101 is generally cylindrical, and a flange structure 201 is installed at both ends of the airbag 101. The central axes of the two flange structures 201 are collinear with the central axis of the airbag 101. The sealing collar 301 is a ring structure, and four nuts 401 are provided on the same side of the sealing collar 301. The central axes of the four nuts 401 are arranged in a circumferential array about the central axis of the sealing collar 301, and the inner diameter of the sealing collar 301 (Ф135mm in this embodiment) is smaller than the outer diameter of the flange structure 201 (Ф160mm in this embodiment).

[0030] It should be noted that a sealing collar 301 needs to be installed at both ends of the airbag 101. During assembly, install one first, then rotate the airbag 101 180° and install the other.

[0031] The assembly fixture includes a base plate 501 and a top plate 502 connected by columns, a first positioning assembly and a second positioning assembly both mounted on the base plate 501, a third positioning assembly both mounted on the top plate 502, and a uniform extrusion device. The base plate 501 and the top plate 502 are parallel to each other. During assembly, the first positioning assembly is used to position the flange structure 201; the second and third positioning assemblies are both used to position the sealing collar 301; and the uniform extrusion device is used to cause the flange structure 201 to undergo uniform radial deformation.

[0032] Specifically, refer to Figure 2 In this embodiment, the first positioning component includes four arc-shaped positioning blocks arranged in a circular array on the base plate 501. The centers of the four arc-shaped positioning blocks are collinear, and the outer diameter of any arc-shaped positioning block is the same as the bore diameter of the flange structure 201. In other embodiments of this embodiment, the number of arc-shaped positioning blocks may be two, three, five, or more, or the arc-shaped positioning blocks may be a ring structure.

[0033] Specifically, refer to Figure 2 In this embodiment, the second positioning component includes four positioning posts 504 arranged in a circular array on the base plate 501. The central axes of the four positioning posts 504 are parallel to each other, and the center line of the array of the four positioning posts 504 is collinear with the center of any arc-shaped positioning block.

[0034] Specifically, in this embodiment, the third positioning component includes four positioning rods 505 passing through the top plate 502. Any positioning rod 505 is slidably connected to the top plate 502, and the sliding direction of any positioning rod 505 is parallel to the central axis of any positioning post 504. The four positioning rods 505 are arranged in a circular array about the array center line of the four positioning posts 504. The central axis of the four positioning rods 505 is collinear with the central axis of the four positioning posts 504. The end of any positioning rod 505 near the positioning post 504 is provided with an external thread that is compatible with the nut 401.

[0035] Specifically, in this embodiment, the uniform extrusion device includes a puller 506 mounted on the top plate 502. The central axis of the spiral rod 5061 of the puller 506 is collinear with the center line of the array of four positioning rods 505, and the spiral rod 5061 of the puller 506 is threadedly connected to the top plate 502. In this embodiment, the puller 506 has four claws, which are arranged in a circular array about the central axis of the spiral rod 5061.

[0036] Assembly steps:

[0037] Before assembly, the sealing collar 301 to be assembled is temporarily installed on the bottom surface of the top plate 502: the bottom ends of the four positioning rods 505 are respectively threaded to the four nuts 401 on the sealing collar 301, and the sealing collar 301 cannot fall when one of the positioning rods 505 is held. After the sealing collar 301 is temporarily fixed, the puller 506 is located in the through hole of the sealing collar 301.

[0038] Then, the airbag 101 is placed on the base plate 501, and the inner wall of the through hole on the flange structure 201 is simultaneously abutted against the outer walls of the four arc-shaped positioning blocks. After this placement, it is then... Figure 1 From this perspective, the airbag 101 cannot move left or right on the base plate 501.

[0039] Then, by turning the screw rod 5061 of the puller 506, the four pull claws are brought together synchronously. Once all four pull claws are in contact with the outer flange of the sealing ring 301, they continue to move together synchronously. During this process, the four pull claws cause uniform radial deformation of the flange structure 201. When the sealing ring 301 can be fitted onto the flange structure 201, the screw rod 5061 is stopped. At this point, the positioning rods 505 are moved downwards until the sealing ring 301 is assembled onto the flange structure 201. Then, the four positioning rods 505 are separated from the four nuts 401.

[0040] When assembling another sealing ring 301, first connect the four nuts 401 on the sealing ring 301 mounted on one of the flange structures 201 to the four positioning pins 504 respectively to complete the positioning. Then repeat the above steps to complete the assembly of the second sealing ring 301.

[0041] After both sealing rings 301 are assembled, the central axes of the four nuts 401 on the two sealing rings 301 are collinear and correspond to each other, thus meeting the assembly requirements.

[0042] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An assembly fixture for a pantograph airbag and a sealing collar, wherein the airbag (101) has a cylindrical structure, and flange structures (201) are provided at both ends of the airbag (101), the central axes of the two flange structures (201) being collinear with the central axis of the airbag (101); the sealing collar (301) has a circular structure, and four nuts (401) are provided on the same side of the sealing collar (301), the central axes of the four nuts (401) being arranged in a circumferential array about the central axis of the sealing collar (301), and the inner diameter of the sealing collar (301) being smaller than the outer diameter of the flange structure (201); characterized in that: The fixture includes a base plate (501) and a top plate (502) connected by columns, a first positioning component and a second positioning component both disposed on the base plate (501), a third positioning component and a uniform extrusion device both disposed on the top plate (502), the first positioning component being used to position the flange structure (201); the second positioning component and the third positioning component both being used to position the sealing collar (301); the uniform extrusion device being used to cause the flange structure (201) to undergo uniform deformation in the radial direction.

2. The assembly fixture for the pantograph airbag and sealing collar according to claim 1, characterized in that: The first positioning component includes at least two arc-shaped positioning blocks arranged in a circumferential array on the base plate (501), the centers of the two arc-shaped positioning blocks are collinear, and the outer diameter of any arc-shaped positioning block is the same as the bore diameter of the flange structure (201).

3. The assembly fixture for the pantograph airbag and sealing collar according to claim 2, characterized in that: The second positioning component includes four positioning posts (504) arranged in a circular array on the base plate (501). The central axes of the four positioning posts (504) are parallel to each other, and the center of any of the arc-shaped positioning blocks is located on the center line of the array of the four positioning posts (504).

4. The assembly fixture for the pantograph airbag and sealing collar according to claim 3, characterized in that: The third positioning component includes four positioning rods (505) passing through the top plate (502). Any one of the positioning rods (505) is slidably connected to the top plate (502), and the sliding direction of any one of the positioning rods (505) is parallel to the central axis of any one of the positioning posts (504). The four positioning rods (505) are arranged in a circular array about the array center line of the four positioning posts (504), and the central axis of the four positioning rods (505) is collinear with the central axis of the four positioning posts (504). The end of any one of the positioning rods (505) near the positioning post (504) is provided with an external thread that is compatible with the nut (401).

5. The assembly fixture for the pantograph airbag and sealing collar according to claim 4, characterized in that: The uniform extrusion device includes a puller (506) disposed on the top plate (502), wherein the central axis of the spiral rod (5061) of the puller (506) is collinear with the center line of the array of four positioning rods (505).

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