Motor assembly method

Abstract

The present invention discloses a motor assembly method, which adopts vertical assembly; firstly, a rear bearing outer cover, a deep groove ball bearing, a rear end cover, a rear bearing inner cover, a rotor, and a cylindrical roller bearing inner sleeve are assembled together to form a first component; then, a stator, a front bearing inner cover, a false bearing outer sleeve, a front bearing outer cover, and a front end cover are assembled together to form a second component; the first component is moved downward, the rotor is inserted into the stator, and the cylindrical roller bearing inner sleeve corresponds to the false bearing outer sleeve; then, the first component and the second component are assembled into one; then, the motor is turned over, the front bearing outer cover is removed, and bolts are screwed into the screw holes on the false bearing outer sleeve to take out the false bearing outer sleeve; finally, the cylindrical roller bearing outer sleeve and the front bearing outer cover are assembled to complete the motor assembly. The advantages of the present invention are: no damage is caused to the cylindrical roller bearing pre-installed in the cylindrical roller bearing outer sleeve, the cost is reduced, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to an assembly method of a motor. Background Art

[0002] There are generally two methods for motor assembly, horizontal assembly and vertical assembly. Since horizontal assembly is inefficient and requires tooling, vertical assembly is generally used. The motor structure has a deep groove ball bearing at one end and a cylindrical roller bearing at the other end. Whether horizontal or vertical assembly is used, the stator and rotor cannot be completely aligned due to the air gap. Especially when vertical assembly is used, the weight of the rotor and its components can easily damage the cylindrical roller bearing installed at the bottom of the stator during the downward movement, especially scratching the cylindrical roller bearing to varying degrees, affecting the quality of the motor. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a method for installing a motor, using a fake bearing sleeve, first installing the rotor of the motor on the stator, then turning the motor around, and replacing the fake bearing sleeve with a cylindrical roller bearing sleeve to complete the assembly of the motor. The specific technical solution is as follows:

[0004] A motor assembly method adopts vertical assembly;

[0005] First, assemble the rear bearing outer cover, deep groove ball bearing, rear end cover, rear bearing inner cover, rotor, and cylindrical roller bearing inner sleeve together to form a first assembly;

[0006] Then assembling the stator, the front bearing inner cover, the dummy bearing outer cover, the front bearing outer cover and the front end cover together to form a second assembly;

[0007] Move the first assembly downward, insert the rotor into the stator, and position the inner sleeve of the cylindrical roller bearing corresponding to the outer sleeve of the dummy bearing;

[0008] Then assemble the first component and the second component into one; then turn over the motor, remove the front bearing cover, screw the bolts into the screw holes on the fake bearing jacket, and take out the fake bearing jacket;

[0009] The cylindrical roller bearing is pre-assembled in the cylindrical roller bearing housing;

[0010] Finally, assemble the cylindrical roller bearing jacket and front bearing cover to complete the motor assembly.

[0011] The outer shape of the dummy bearing outer sleeve is consistent with that of the cylindrical roller bearing outer sleeve.

[0012] There are multiple screw holes, which are evenly distributed along the circumference of the fake bearing outer sleeve.

[0013] The advantages of the present invention are: since the cylindrical roller bearing sleeve is not installed in the initial stator and rotor assembly process, the cylindrical roller bearing pre-installed in the cylindrical roller bearing sleeve will not be damaged, thereby solving most of the bearing damage caused by assembly reasons, reducing costs and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of removing the fake bearing jacket after reversing the motor;

[0016] Figure 3 Schematic diagram of installing a cylindrical roller bearing jacket. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings. As shown in the drawings, first, according to a conventional motor assembly method, a rear bearing outer cover 1, a deep groove ball bearing 2, a rear end cover 3, a rear bearing inner cover 4, a rotor 5, and a cylindrical roller bearing inner sleeve 6 are assembled together to form a first assembly;

[0018] Then, according to the conventional motor assembly method, the stator 7, the front bearing inner cover 8, the false bearing outer cover 9, the front bearing outer cover 10, and the front end cover 11 are assembled together to form a second assembly;

[0019] Move the first assembly downward, insert the rotor 5 into the stator 7, and position the cylindrical roller bearing inner sleeve 6 and the dummy bearing outer sleeve 9 correspondingly;

[0020] Then, according to the conventional motor assembly method, the first component and the second component are assembled into one; then the motor is turned over, the front bearing outer cover 10 is removed, and the bolts 12 are screwed into the screw holes on the dummy bearing sleeve 9 to remove the dummy bearing sleeve 9;

[0021] The cylindrical roller bearing is pre-assembled in the cylindrical roller bearing jacket 13;

[0022] Finally, the cylindrical roller bearing jacket 13 and the front bearing outer cover 10 are assembled to complete the motor assembly.

[0023] The outer shape of the dummy bearing sleeve 9 is consistent with that of the cylindrical roller bearing sleeve 13 .

[0024] In order to ensure uniform force, there are multiple screw holes evenly distributed along the circumference of the false bearing sleeve 9.

[0025] Since the cylindrical roller bearing sleeve is not installed in the initial stator and rotor assembly process, the cylindrical roller bearing pre-installed in the cylindrical roller bearing sleeve will not be damaged during the assembly process, thus solving most of the bearing damage caused by assembly reasons, reducing costs and improving product quality.

Claims

1. A motor assembly method, characterized in that: Adopt vertical assembly; First, assemble the rear bearing outer cover (1), the deep groove ball bearing (2), the rear end cover (3), the rear bearing inner cover (4), the rotor (5), and the cylindrical roller bearing inner sleeve (6) together to form a first assembly; Then, the stator (7), the front bearing inner cover (8), the false bearing outer cover (9), the front bearing outer cover (10), and the front end cover (11) are assembled together to form a second assembly; The first assembly is moved downward, the rotor (5) is inserted into the stator (7), and the inner sleeve (6) of the cylindrical roller bearing corresponds to the outer sleeve (9) of the dummy bearing; Then, the first component and the second component are assembled into one body; the motor is turned over, the front bearing outer cover (10) is removed, and the bolts (12) are screwed into the screw holes on the dummy bearing outer sleeve (9), and the dummy bearing outer sleeve (9) is taken out; The cylindrical roller bearing is pre-assembled in the cylindrical roller bearing sleeve (13); Finally, the cylindrical roller bearing jacket (13) and the front bearing outer cover (10) are assembled to complete the motor assembly.

2. The motor assembly method according to claim 1, characterized in that: The outer shape of the dummy bearing sleeve (9) is consistent with that of the cylindrical roller bearing sleeve (13).

3. The motor assembly method according to claim 1, characterized in that: There are multiple screw holes, which are evenly distributed along the circumference of the false bearing sleeve (9).

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