Motor gear dismounting tool

Abstract

The utility model discloses a dismounting tool for a motor gear. The dismounting tool comprises a chuck, a clamping seat, a spring and a fixing screw, the inner side face of the clamping head is of an arc-shaped structure, mounting holes are formed in the two ends of the clamping head, and inner teeth meshed with a starting motor gear are arranged on the inner side face of the clamping head. The inner side face of the clamping base is of an arc-shaped structure with the same size as the inner side face of the clamping head, threaded holes are formed in the two ends of the clamping base, and the threaded holes correspond to the mounting holes in the two ends of the clamping head in position. The spring is arranged between the chuck and the clamping seat, the fixing screw sequentially penetrates through a mounting hole of the chuck and the spring and is in threaded connection into a threaded hole of the clamping seat, the motor gear dismounting tool avoids following rotation of the transmission shaft when the gear locking nut applies acting force, dismounting operation of the gear locking nut is achieved, and the motor gear dismounting tool is convenient to carry and high in practicability. And the use convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine maintenance, in particular to a motor gear disassembly and assembly tool. Background Art

[0002] When the starter motor is working, the gear shaft extends to connect the gear to the flywheel gear ring, thereby providing initial power for the engine and enabling it to enter the running state from a stationary state. The assembly accuracy of the starter motor gear affects the gear meshing effect, which directly affects the normal starting of the engine and is of great significance. During the assembly and maintenance of the engine starter motor, the motor gear inevitably needs to be disassembled and assembled. When the locking nut applies force under normal conditions, it will cause the gear transmission shaft to rotate.

[0003] The traditional disassembly and assembly method is to fix the motor gear with the bench vise on the bench, and then disassemble and assemble the gear locking nut. This method is inefficient and the assembly quality cannot be effectively guaranteed. Excessive clamping force of the bench vise will damage the gear surface, and too little clamping force will lead to unstable clamping, affecting the assembly accuracy. At the same time, the bench vise is cumbersome to operate and cannot be carried around, and the application scenarios are limited. The gear assembly accuracy cannot be controlled. When the engine is started, the motor gear is prone to fall off, causing motor gear knocking, affecting the performance quality of the entire engine. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a motor gear disassembly and assembly tool to prevent the transmission shaft from rotating when the gear locking nut applies a force, thereby realizing the disassembly and assembly of the gear locking nut, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor gear disassembly and assembly tool, comprising a chuck, a chuck seat, a spring and a fixing screw;

[0006] The inner side surface of the chuck is an arc-shaped structure, and mounting holes are arranged at both ends of the chuck. The inner side surface of the chuck is provided with internal teeth meshing with the gear of the starter motor;

[0007] The inner side surface of the clamp seat is an arc-shaped structure with the same size as the inner side surface of the clamp head. The two ends of the clamp seat are provided with threaded holes, and the positions of the threaded holes and the mounting holes at the two ends of the clamp head correspond to each other.

[0008] The spring is arranged between the clamp and the clamp seat, and the fixing screw passes through the mounting hole of the clamp and the spring in sequence and is threadedly connected to the threaded hole of the clamp seat.

[0009] As a preferred technical solution of the utility model, the tooth shape of the inner side surface of the chuck is divided into double teeth and multiple teeth.

[0010] As a preferred technical solution of the utility model, the inner side surface of the clamping seat is divided into a toothless structure and a multi-tooth structure.

[0011] As a preferred technical solution of the utility model, a handle is provided at one end of the chuck, and the chuck and the handle are connected by a set screw.

[0012] As a preferred technical solution of the utility model, the outer side surface of the end of the handle is processed with anti-slip patterns.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the motor gear disassembly and assembly tool has a compact structure, simple processing, and is easy to carry. It can be used to replace the starting motor gear of the entire machine in a narrow space. The gear clamping mechanism is reset by a spring to avoid combined decomposition operations during tool use. The gear is clamped by internal tooth matching, and the gear tooth surface is evenly stressed to avoid the influence of tooth surface deformation. The operation is simple and efficient, which ensures work quality, increases work efficiency, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of Example 1;

[0015] Figure 2 It is an exploded view of Example 1;

[0016] Figure 3 It is a structural schematic diagram of the clamping head and the clamping seat of Example 1;

[0017] Figure 4 This is a schematic diagram of the structure of the chuck and the chuck seat of Example 2.

[0018] In the figure: 1 handle, 2 chuck, 3 clamp seat, 4 spring, 5 fixing screw, 6 set screw. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the present invention). Figure 1 Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-3 , the utility model provides a technical solution: a motor gear disassembly and assembly tool, including a chuck 2, a chuck seat 3, a spring 4 and a fixing screw 5;

[0021] The inner side surface of the chuck 2 is an arc-shaped structure, and mounting holes are provided at both ends of the chuck 2. The inner side surface of the chuck 2 is provided with internal teeth meshing with the gear of the starter motor;

[0022] The inner side surface of the clamp seat 3 is an arc-shaped structure of the same size as the inner side surface of the clamp head 2. The two ends of the clamp seat 3 are provided with threaded holes, and the positions of the threaded holes and the mounting holes at the two ends of the clamp head 2 correspond to each other.

[0023] The spring 4 is arranged between the clamp 2 and the clamp seat 3 , and the fixing screw 5 passes through the mounting hole of the clamp 2 and the spring 4 in sequence and is threadedly connected to the threaded hole of the clamp seat 3 .

[0024] In this embodiment, the inner side surface of the clamp head 2 is a double-tooth structure, and the inner side surface of the clamp seat 3 is a toothless structure, which is suitable for the case where the torsional force of the motor gear nut is not large.

[0025] Furthermore, in order to facilitate the operation of workers, a handle 1 is provided at one end of the chuck 2 , and the chuck 2 and the handle 1 are connected by a set screw 6 .

[0026] Furthermore, in order to prevent slipping when holding the handle 1, the outer side surface of the end of the handle 1 is processed with anti-slip grooves.

[0027] During disassembly and assembly, insert the clamping hole of the motor gear disassembly and assembly tool from the front end of the starter motor gear shaft, adjust the inner teeth of the starter motor gear and the chuck 2 to the meshing state, tighten the fixing screw 5 to pull the chuck 2 and the clamp seat 3 in until the starter motor gear is completely clamped. At this time, the spring 4 is in a compressed state, and an open-end torque wrench is used to disassemble and assemble the starter motor gear locking nut. After the operation is completed, loosen the fixing screw 5 to relax the spring 4, and withdraw the motor gear disassembly and assembly tool along the starter motor gear shaft toward the front end.

[0028] Example 2: Figure 4 As shown, the difference from Example 1 is that the inner side surface of the chuck 2 is a multi-tooth structure, and the inner side surface of the clamp seat 3 is a multi-tooth structure, which can withstand a larger torsional force and has less impact on the surface of the motor gear, and is suitable for situations where the torsional force of the motor gear nut is large.

[0029] The utility model can realize the clamping operation of spur gears and helical gears of different specifications by replacing the chuck 2 and the clamp seat 3 with different tooth shapes, and has universal applicability; the associated reset of the gear clamping mechanism is realized by the spring 4, and the combination and disassembly operation of the tool during use is avoided. The operation is simple and efficient, the work quality is guaranteed, and the work efficiency is increased.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor gear disassembly and assembly tool, characterized in that: It comprises a clamp (2), a clamp seat (3), a spring (4) and a fixing screw (5); The inner side surface of the chuck (2) is an arc-shaped structure, mounting holes are provided at both ends of the chuck (2), and the inner side surface of the chuck (2) is provided with internal teeth meshing with the gear of the starter motor; The inner side surface of the clamp seat (3) is an arc-shaped structure with the same size as the inner side surface of the clamp head (2), and threaded holes are provided at both ends of the clamp seat (3), and the positions of the threaded holes and the mounting holes at both ends of the clamp head (2) correspond to each other; The spring (4) is arranged between the clamp (2) and the clamp seat (3), and the fixing screw (5) passes through the mounting hole of the clamp (2), the spring (4) in sequence and is threadedly connected to the threaded hole of the clamp seat (3).

2. The motor gear disassembly and assembly tool according to claim 1, characterized in that: The tooth shape of the inner side surface of the chuck (2) is divided into double teeth and multiple teeth.

3. The motor gear disassembly and assembly tool according to claim 1, characterized in that: The inner side surface of the clamping seat (3) is divided into a toothless structure and a multi-tooth structure.

4. The motor gear disassembly and assembly tool according to claim 1, characterized in that: A handle (1) is provided at one end of the chuck (2), and the chuck (2) and the handle (1) are connected via a set screw (6).

5. The motor gear disassembly and assembly tool according to claim 4, characterized in that: The outer side surface of the end of the handle (1) is processed with anti-slip patterns.

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