Anti-pinch tool for withdrawal of wheel set bearing of subway electric passenger car

Abstract

The utility model relates to the related technical field of maintenance equipment, in particular to a metro electric passenger car wheel set bearing withdrawal anti-pinch tool. A left side plate of a supporting plate is rotationally connected with a telescopic rod through a first upper rotating shaft; the right side plate is also rotationally connected with a telescopic rod through a second upper rotating shaft; the lower end of the left telescopic rod is rotationally connected with a left swing plate through a first lower rotating shaft; the lower end of the right telescopic rod is rotationally connected with a right swing plate through a second lower rotating shaft; a sliding groove is transversely formed in the bottom of the supporting plate. The lower part of the left sliding block is vertically connected with a left connecting plate; the lower portion of the right sliding block is vertically connected with a right connecting plate. The left connecting plate is rotationally connected with the left swinging plate through a left swinging rotating shaft; the right connecting plate is rotationally connected with the right swinging plate through a right swinging rotating shaft; the left swing plate and the right swing plate are connected through a reset spring. The metro electric passenger car wheel set bearing withdrawal anti-pinch tool is wide in application range, easy to operate, fast and capable of saving labor.

Description

Technical Field

[0001] The utility model belongs to the technical field related to maintenance equipment, and particularly relates to an anti-pinch tooling for removing the wheel pair bearing of a subway electric passenger car. Background Technique

[0002] The wheel, as a component that directly contacts the railway track of the subway car body, is particularly important. The vehicle bearing mainly converts the rotational movement of the wheel pair into the translational movement of the train along the rail through the bearing, and together with the axle box device, it becomes the basis of the primary suspension device. It serves as a support structure to bear the weight of the upper components, transmit the vertical force, transmit the traction force and braking force, and is the speed signal acquisition part.

[0003] As a part of the axle box device, the bearing is installed on the axle diameter of the wheel pair, and together they form the wheel pair axle box device. The wheel pair, as the contact part between the vehicle and the track, guides the vehicle to run safely along the track, bears the weight of the vehicle, and transmits the traction force and braking force to the track. Considering the requirement of the running kilometers for the bearing life, generally when the frame of a subway electric passenger car is overhauled, the bearing may not have reached the service life and can be reused after maintenance. During the wheel pair maintenance process, in order to replace the wheel disc and improve the reliability of the bearing, the bearing needs to be removed first in the disassembly link.

[0004] Currently, a removal machine with pulling devices at both ends is used for removal. During use, it is necessary for workers to align the rear cover of the axle box manually to achieve the gap between the rear cover of the axle box and the dust guard ring, ensuring the smooth embedding of the pulling device, so as to remove the bearing. Therefore, during the embedding process of the pulling device, it is easy to bump the dust guard ring and the rear cover of the axle box, adding unnecessary difficulties to the subsequent component maintenance, and it is also easy to injure the operators during the embedding process, posing a problem of potential personal safety hazards. Content of the Utility Model

[0005] The purpose of the utility model is to provide an anti-pinch tooling for removing the wheel pair bearing of a subway electric passenger car with a wide application range, simple operation, and quick and labor-saving features.

[0006] To achieve the above object, the present utility model provides the following technical solution: A subway electric multiple unit wheel set bearing removal anti-pinch tooling, comprising a support plate, a left side plate, a right side plate, a first upper rotating shaft, a second upper rotating shaft, a telescopic rod, a first lower rotating shaft, a left swing plate, a second lower rotating shaft, a right swing plate, a chute, a left slider, a right slider, a left connecting plate, a right connecting plate, a left swing rotating shaft, a right swing rotating shaft, a return spring, a positioning groove and a positioning pin. The left side plate is installed on the left side of the support plate; the right side plate is connected to the right side of the support plate; the telescopic rod is rotatably connected to the left side plate through the first upper rotating shaft; the telescopic rod is also rotatably connected to the right side plate through the second upper rotating shaft; the lower end of the left telescopic rod is rotatably connected to the left swing plate through the first lower rotating shaft; the lower end of the right telescopic rod is rotatably connected to the right swing plate through the second lower rotating shaft; a chute is horizontally processed and arranged at the bottom of the support plate; the left slider and the right slider are slidably installed in the chute; the lower part of the left slider is vertically connected with the left connecting plate; the lower part of the right slider is vertically connected with the right connecting plate; the left connecting plate is rotatably connected to the left swing plate through the left swing rotating shaft; the right connecting plate is rotatably connected to the right swing plate through the right swing rotating shaft; the left swing plate and the right swing plate are mutually connected through the return spring; the positioning grooves are arranged at intervals on the surface of the support plate; the positioning pin is movably inserted into the positioning groove.

[0007] As a further improvement of the present utility model, both the left swing plate and the right swing plate adopt an arc-shaped plate structure.

[0008] As a further improvement of the present utility model, the length of the positioning pin is greater than the depth dimension of the positioning groove.

[0009] As a further improvement of the present utility model, a connecting column is vertically connected to the center of the upper surface of the support plate.

[0010] As a further improvement of the present utility model, a threaded structure is processed on the surface of the lower section of the connecting column; a threaded hole is opened at the center of the upper surface of the support plate; the connecting column and the support plate are threadedly connected to each other.

[0011] As a further improvement of the present utility model, a handle is connected to the upper end of the connecting column; the handle adopts a hexagonal nut structure.

[0012] As a further improvement of the present utility model, the left swing plate 8 and the right swing plate 10 are made of nylon material.

[0013] As a further improvement of the present utility model, anti-slip pads 23 are fixedly pasted on the lower surfaces of both the left swing plate 8 and the right swing plate 10.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The tooling of this technical solution is made of nylon material, with excellent self-quality, high wear resistance and long service life; the anti-pinch tooling for the dismounting of the wheel set bearings of subway electric multiple units is provided with a connecting column and a handle, having the beneficial technical effects of convenient access and easy handling; the usage method of this technical solution is simple and does not require a large amount of specialized training. Grape operators can quickly get started after getting it; this technical solution can effectively improve work efficiency and operation quality. Originally, when dismounting the wheel set bearings, one person was needed to hold the rear cover of the axle box at each end respectively to ensure the clearance for the smooth insertion of the pulling device. Now, one person can place the anti-pinch tooling at both ends respectively, saving manpower and cost, achieving the beneficial technical effect of saving time and effort; this technical solution has a wide range of applications and can be applied to the dismounting operations of various different subway wheel bearings, having the beneficial technical effects of being flexible and adjustable and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0016] Figure 2 It is a schematic diagram of the present utility model in the top view direction.

[0017] In the figure: 1, support plate; 2, left side plate; 3, right side plate; 4, first upper rotating shaft; 5, second upper rotating shaft; 6, telescopic rod; 7, first lower rotating shaft; 8, left swing plate; 9, second lower rotating shaft; 10, right swing plate; 11, sliding groove; 12, left slider; 13, right slider; 14, left connecting plate; 15, right connecting plate; 16, left swing rotating shaft; 17, right swing rotating shaft; 18, return spring; 19, positioning groove; 20, positioning pin; 21, connecting column; 22, handle; 23, anti-slip pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 to 2, the utility model provides a technical solution: a subway electric vehicle wheel set bearing removal anti-pinch tooling, including a support plate 1, a left side plate 2, a right side plate 3, a first upper rotating shaft 4, a second upper rotating shaft 5, a telescopic rod 6, a first lower rotating shaft 7, a left swing plate 8, a second lower rotating shaft 9, a right swing plate 10, a chute 11, a left slider 12, a right slider 13, a left connecting plate 14, a right connecting plate 15, a left swing rotating shaft 16, a right swing rotating shaft 17, a return spring 18, a positioning groove 19 and a positioning pin 20. The left side of the support plate 1 is installed with the left side plate 2; the right side of the support plate 1 is connected with the right side plate 3; the telescopic rod 6 is rotatably connected to the left side plate 2 through the first upper rotating shaft 4; the telescopic rod 6 is also rotatably connected to the right side plate 3 through the second upper rotating shaft 5; the telescopic rod 6 can be a hydraulic telescopic rod or a pneumatic telescopic rod with preset parameters such as resilience and damping. The lower end of the left telescopic rod 6 is rotatably connected to the left swing plate 8 through the first lower rotating shaft 7; the lower end of the right telescopic rod 6 is rotatably connected to the right swing plate 10 through the second lower rotating shaft 9; a chute 11 is horizontally processed and arranged at the bottom of the support plate 1; the left slider 12 and the right slider 13 are slidably installed in the chute 11; the lower part of the left slider 12 is vertically connected with the left connecting plate 14; the lower part of the right slider 13 is vertically connected with the right connecting plate 15; the left connecting plate 14 is rotatably connected to the left swing plate 8 through the left swing rotating shaft 16; the right connecting plate 15 is rotatably connected to the right swing plate 10 through the right swing rotating shaft 17; an elastic rope is also connected between the lower end of the left side plate 2 and the lower end of the left swing plate 8; an elastic rope is also connected between the lower end of the right side plate 3 and the lower end of the right swing plate 10; the left swing plate 8 and the right swing plate 10 are connected to each other through the return spring 18; positioning grooves 19 are arranged at intervals on the surface of the support plate 1; positioning pins 20 are movably inserted into the positioning grooves 19; both the left swing plate 8 and the right swing plate 10 adopt arc-shaped plate structures.

[0020] The length of the positioning pin 20 is greater than the depth dimension of the positioning groove 19; a connecting column 21 is vertically connected to the center of the upper surface of the support plate 1. The lower section surface of the connecting column 21 is processed with a threaded structure; a threaded hole is opened at the center of the upper surface of the support plate 1; the connecting column 21 and the support plate 1 are threadedly connected to each other; the upper end of the connecting column 21 is connected with a handle 22; the handle 22 adopts a hexagonal nut structure.

[0021] The left swing plate 8 and the right swing plate 10 are made of nylon material; anti-slip pads 23 are fixedly pasted on the lower surfaces of the left swing plate 8 and the right swing plate 10.

[0022] The working principle of the anti-pinch tooling for wheel set bearings of urban rail electric vehicles in actual application is as follows: After the wheel set to be repaired is in place, one hand holds the corresponding operation position through the handle of the anti-pinch tooling, and the other hand adjusts the clearance between the rear cover and the dust-proof retaining ring behind the rear cover of the axle box. Then, place the arc surface of the anti-pinch device along the arc of the unloading groove of the axle, and place it until it is properly aligned; then repeat the same operation process on the other side of the wheel set; after the anti-pinch toolings at both ends of the wheel set are properly aligned, operate the equipment, and the pulling device slowly rises and is inserted into the corresponding clearance of the anti-pinch device. Then operate the equipment to unload the bearing from the axle.

[0023] The above are only the preferred examples of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A subway electric passenger car wheel bearing unloading anti-pinch tooling, characterized by: The invention comprises a support plate (1), a left side plate (2), a right side plate (3), a first upper rotating shaft (4), a second upper rotating shaft (5), a telescopic rod (6), a first lower rotating shaft (7), a left swing plate (8), a second lower rotating shaft (9), a right swing plate (10), a sliding groove (11), a left sliding block (12), a right sliding block (13), a left connecting plate (14), a right connecting plate (15), a left swing rotating shaft (16), a right swing rotating shaft (17), a return spring (18), a positioning groove (19) and a positioning pin (20). The left side plate (2) is installed with the left side plate; the right side plate (3) is connected with the right side plate (1); the left side plate (2) is rotatably connected with the telescopic rod (6) through the first upper rotating shaft (4); the right side plate (3) is also rotatably connected with the telescopic rod (6) through the second upper rotating shaft (5); the lower end of the telescopic rod (6) on the left side is rotatably connected with the telescopic rod (6) through the first lower rotating shaft (7). The invention relates to a left swing plate (8); the lower end of the telescopic rod (6) on the right side is rotatably connected to the right swing plate (10) through a second lower rotating shaft (9); a slide groove (11) is formed on the bottom of the support plate (1) in a transverse manner; a left slider (12) and a right slider (13) are slidably mounted in the slide groove (11); a left connecting plate (14) is vertically connected to the lower part of the left slider (12); a right connecting plate (15) is vertically connected to the lower part of the right slider (13); the left connecting plate (14) is rotatably connected to the left swing plate (8) through a left swing rotating shaft (16); the right connecting plate (15) is rotatably connected to the right swing plate (10) through a right swing rotating shaft (17); the left swing plate (8) and the right swing plate (10) are connected to each other through a return spring (18); positioning grooves (19) are arranged at intervals on the surface of the support plate (1); and a positioning pin (20) is movably inserted into the positioning groove (19).

2. The anti-clamping tool for dismantling the bearing of a subway electric passenger car wheel set according to claim 1 is characterized by: The left swing plate (8) and the right swing plate (10) both adopt arc-shaped plate structures.

3. The anti-clamping tool for dismantling the bearing of a subway electric passenger car wheel set according to claim 1 is characterized in that: The length of the positioning pin (20) is greater than the depth of the positioning groove (19).

4. The anti-clamping tool for dismantling the bearing of a subway electric passenger car wheel set according to claim 1 is characterized by: A connecting column (21) is vertically connected to the centre of the upper surface of the support plate (1).

5. The anti-clamping tool for dismantling the bearing of a subway electric passenger car wheel set according to claim 4 is characterized by: The lower surface of the connecting column (21) is processed with a threaded structure; a threaded hole is provided in the center of the upper surface of the supporting plate (1); and the connecting column (21) and the supporting plate (1) are threadedly connected to each other.

6. The anti-clamping tool for dismantling the bearing of a subway electric passenger car wheel set according to claim 5 is characterized by: The upper end of the connecting column (21) is connected to a handle (22); the handle (22) adopts a hexagonal nut structure.

7. The anti-clamping tool for dismantling the bearing of a subway electric passenger car wheel set according to claim 1 is characterized by: The left swing plate (8) and the right swing plate (10) are made of nylon.

8. The anti-clamping tool for dismantling the bearing of a subway electric passenger car wheel set according to claim 1 is characterized by: Anti-slip pads (23) are adhered and fixed to the lower surfaces of the left swing plate (8) and the right swing plate (10).

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