Automobile gearbox bearing dismounting tool

Abstract

The utility model discloses an automobile gearbox bearing dismounting tool which comprises a base, a motor fixing seat is arranged on the base, a rotating motor is arranged on the motor fixing seat, a pitch changing mechanism and a plurality of drawing rods are sequentially arranged at the front end of the rotating motor, pushing air cylinders are arranged on the two sides of the pitch changing mechanism, and the pitch changing mechanism comprises a pitch changing disc and a positioning disc. And the driving end of the rotating motor is connected with a screw rod. The bearing dismounting device has the advantages that butt joint of the drawing rod and the bearing is adjusted through the pitch changing mechanism, the drawing rod moves relatively after the screw is pushed by the driving motor to extrude the bearing, it is guaranteed that the bearing is evenly stressed, the effect of rapidly and conveniently dismounting the bearing is achieved, operation is flexible, and dismounting is convenient.

Description

Technical Field

[0001] This utility model relates to the field of automotive transmission manufacturing technology, specifically to an automotive transmission bearing disassembly tool. Background Technology

[0002] The main purpose of an automotive transmission is to change the torque and speed of the engine crankshaft to meet the different requirements of the driving wheels for traction and speed under different conditions such as starting, accelerating, driving and overcoming various road obstacles. The transmission has multiple output shafts working together to transmit torque with high efficiency.

[0003] During maintenance, the shaft and the bearings that mate with the shaft need to be disconnected. That is, the bearings need to be removed from the shaft, any damaged or broken bearings need to be removed, and new bearings need to be replaced.

[0004] During bearing disassembly, the bearing is easily driven to rotate or slide, resulting in uneven force on the shaft when it is pushed out, which increases the difficulty of disassembly and may also cause damage to the shaft or bearing. Therefore, an efficient bearing disassembly tool is needed. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for disassembling automotive gearbox bearings to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a disassembly fixture for automotive gearbox bearings, including a base, a motor mounting base on the base, a rotary motor on the motor mounting base, a pitch-changing mechanism and multiple pull rods arranged sequentially at the front end of the rotary motor, a push cylinder on both sides of the pitch-changing mechanism, the pitch-changing mechanism including a pitch-changing disk and a positioning disk, a rack at the lower end of the pitch-changing disk, and a screw connected to the drive end of the rotary motor.

[0008] Furthermore, the screw passes through the pitch changer and the positioning disc respectively, and the screw is threadedly connected to the positioning disc after passing through the pitch changer.

[0009] Furthermore, the lower end of the pitch control disc has a half gear that meshes with the rack, and the pitch control disc and the positioning disc are respectively provided with multiple pitch grooves and straight grooves.

[0010] Furthermore, the variable pitch groove and the straight groove are respectively provided, and the pull rod passes through the variable pitch groove and the straight groove respectively.

[0011] Furthermore, a knob is provided at one end of the pull rod near the pitch groove, and a limiting nut and a limiting washer are provided between the pull rod, the pitch groove, and the straight groove.

[0012] Furthermore, baffles are provided on both the front and rear sides of the rack, and multiple ball bearings are provided at the lower end of the rack.

[0013] Furthermore, the base is provided with multiple interconnected horizontal and vertical sliding grooves, and the rack is slidably connected to the horizontal and vertical sliding grooves via the ball bearings.

[0014] Furthermore, one end of each of the two piston rods of the push cylinder is respectively disposed at both ends of the rack, and the push cylinder is fixedly connected to the base through a positioning plate.

[0015] Beneficial effects: A tooling for disassembling automotive gearbox bearings uses a variable pitch mechanism to adjust the connection between the pull rod and the bearing. After the pull rod is squeezed by the screw driven by the drive motor, it moves relative to the bearing, ensuring that the bearing is subjected to uniform force and achieving the effect of quick and convenient bearing disassembly. It is flexible in operation and easy to disassemble. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Fig. 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0018] Fig. 3 This is a partial structural schematic diagram of the present invention.

[0019] Figure Labels

[0020] 1-Base, 2-Motor mounting bracket, 3-Rotary motor, 4-Pitch mechanism, 41-Pitch disc, 411-Pitch groove, 42-Positioning disc, 421-Straight groove, 43-Rack, 431-Baffle, 432-Ball bearing, 44-Half gear, 5-Pull rod, 51-Knob, 6-Push cylinder, 7-Screw, 8-Limit nut, 9-Limit washer, 10-Horizontal slide groove, 11-Vertical slide groove, 12-Positioning plate. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] Example

[0023] like Figs. 1-3As shown, a disassembly fixture for an automotive gearbox bearing includes a base 1, a motor mounting base 2 on the base 1, a rotary motor 3 on the motor mounting base 2, a pitch-changing mechanism 4 and multiple pull rods 5 sequentially arranged at the front end of the rotary motor 3, and push cylinders 6 on both sides of the pitch-changing mechanism 4. The pitch-changing mechanism 4 includes a pitch-changing disk 41 and a positioning disk 42, and a rack 43 is provided at the lower end of the pitch-changing disk 41. A screw 7 is connected to the drive end of the rotary motor 3.

[0024] The screw 7 passes through the pitch changer 41 and the positioning plate 42 respectively. After passing through the pitch changer 41, the screw 7 is threadedly connected to the positioning plate 42. The screw 7 is rotated by the rotary motor 3 to press one end of the shaft of the bearing to be disassembled. After the screw 7 continuously presses against the shaft, the positioning plate 42 drives the pitch changer 41 to move in the opposite direction of the screw 7.

[0025] The lower end of the pitch control disc 41 has a half gear 44 that meshes with the rack 43. The rack 43 moves left and right by the push cylinders 6 at both ends. The pitch control disc 41 and the positioning disc 42 are respectively provided with multiple pitch control grooves 411 and straight grooves 421. The pitch control grooves 411 are arc-shaped grooves. The pitch control grooves 411 and straight grooves 421 are arranged correspondingly. The pull rod 5 passes through the pitch control grooves 411 and straight grooves 421 respectively. The pull rod 5 is connected to the pitch control grooves 411 and straight grooves 421 by the limit nut 8 and the limit washer 9. 21. Positioning is performed. After rotating the pitch control disc 41, the pull rod 5 moves along the straight groove 421 due to the rotation of the pitch control groove 411. The spacing changes during the movement of multiple pull rods 5. A knob 51 is provided at one end of the pull rod 5 near the pitch control groove 41. A limit nut 8 and a limit washer 9 are provided between the pull rod 5 and the pitch control groove 411 and the straight groove 421. One end of the pull rod 5 is inserted into the gap of the bearing rolling element and fixed by rotating the knob 51 until it is embedded in the inner and outer rings of the bearing.

[0026] The rack 43 has baffles 431 on both the front and rear sides, and multiple balls 432 at the lower end of the rack 43. The base 1 has multiple interconnected horizontal sliding grooves 10 and vertical sliding grooves 11. The rack 43 is slidably connected to the horizontal sliding grooves 10 and vertical sliding grooves 11 through the balls 432. The rack 43 slides back and forth along the horizontal sliding groove 10 after being driven by the push cylinder 6. As the pitch disc 41 moves in the opposite direction, the rack 43 slides back and forth along the vertical sliding groove 11 through the bottom balls 432.

[0027] In use, the tool is placed at one end of the gearbox bearing. The variable pitch disc 41 is rotated by the push cylinders 6 on both sides of the variable pitch disc 41, which changes the spacing between the multiple pull rods 5 to match the bearing diameter. The tool is then moved slightly to align the pull rods 5 with the bearing. One end of the pull rod is inserted into the gap of the bearing rolling elements, and the knob 51 is rotated to embed and fix the pull rod 5. The pull rod 5 is then locked to the variable pitch disc 41 by the limit nut 8. Finally, the rotary motor 3 is started to push the screw 7 toward one end of the bearing. The continuous pushing force causes the positioning disc 42 to move in the opposite direction, thereby driving the pull rods 5 to pull the bearing in the opposite direction and pull it out straight out along the axis of rotation, thus realizing the disassembly of the bearing.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A disassembly fixture for automotive gearbox bearings, comprising a base (1), characterized in that: The base (1) is provided with a motor mounting seat (2), and the motor mounting seat (2) is provided with a rotary motor (3). The front end of the rotary motor (3) is provided with a pitch mechanism (4) and a plurality of pull rods (5). The pitch mechanism (4) is provided with push cylinders (6) on both sides. The pitch mechanism (4) includes a pitch disc (41) and a positioning disc (42). The lower end of the pitch disc (41) is provided with a rack (43). The drive end of the rotary motor (3) is connected to a screw (7).

2. The automotive gearbox bearing disassembly fixture according to claim 1, characterized in that: The screw (7) passes through the pitch disc (41) and the positioning disc (42) respectively, and the screw (7) is threadedly connected to the positioning disc (42) after passing through the pitch disc (41).

3. The automotive gearbox bearing disassembly fixture according to claim 1, characterized in that: The lower end of the pitch-changing disk (41) has a half gear (44) that meshes with the rack (43). The pitch-changing disk (41) and the positioning disk (42) are respectively provided with a plurality of pitch-changing grooves (411) and straight grooves (421).

4. The automotive gearbox bearing disassembly fixture according to claim 3, characterized in that: The variable pitch groove (411) and the straight groove (421) are respectively provided, and the pull rod (5) passes through the variable pitch groove (411) and the straight groove (421).

5. The automotive gearbox bearing disassembly fixture according to claim 4, characterized in that: A knob (51) is provided at one end of the pull rod (5) near the pitch groove (411), and a limiting nut (8) and a limiting washer (9) are provided between the pull rod (5), the pitch groove (411), and the straight groove (421).

6. The automotive gearbox bearing disassembly fixture according to claim 1, characterized in that: The rack (43) is provided with baffles (431) on both the front and rear sides, and the rack (43) is provided with multiple balls (432) at the lower end.

7. The automotive gearbox bearing disassembly fixture according to claim 6, characterized in that: The base (1) has multiple interconnected horizontal sliding grooves (10) and vertical sliding grooves (11), and the rack (43) is slidably connected to the horizontal sliding grooves (10) and the vertical sliding grooves (11) through the ball bearings (432).

8. The automotive gearbox bearing disassembly fixture according to claim 1, characterized in that: The piston rods of the two push cylinders (6) are respectively located at both ends of the rack (43), and the push cylinders (6) are fixedly connected to the base (1) through the positioning plate (12).

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