CN211405705U

CN211405705U - Assembled motor bearing

Info

Publication number: CN211405705U
Application number: CN202020223508.9U
Authority: CN
Inventors: 韩宏升; 郭树阁; 韩佳杰; 王建新; 李正阳; 董世运; 雷剑波; 高飞; 王超
Original assignee: Hebei Ruizhao Laser Remanufacture Technology Co ltd
Current assignee: Hebei Ruizhao Laser Remanufacture Technology Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-09-01
Anticipated expiration: 2030-02-28

Abstract

An assembly type motor bearing comprises a bearing inner sleeve and a bearing outer sleeve, wherein a rolling body is arranged on the inner circumference of the bearing outer sleeve in a matching mode, the bearing inner sleeve is sleeved in the bearing outer sleeve, and the bearing inner sleeve and the bearing outer sleeve are matched in a rolling mode through the rolling body; the bearing guide sleeve is also included; the bearing guide sleeve is of a hollow cylindrical structure, and two ends of the bearing guide sleeve are respectively provided with a guide table; the bearing guide sleeve and the bearing inner sleeve are sequentially sleeved on the motor shaft in parallel along the mounting direction of the bearing outer sleeve. The bearing avoids collision caused by uneven hoisting, ensures that the bearing inner sleeve is not scratched, greatly avoids the fault that the bearing outer sleeve scratches the bearing inner sleeve, eliminates the hidden trouble of bearing assembly in the process of remanufacturing the motor, and ensures the quality of the remanufactured motor.

Description

Assembled motor bearing

Technical Field

The utility model relates to a motor assembly technique, especially an assembly type motor bearing.

Background

In the motor remanufacturing process, the assembly of the bearing is a key process, and the assembly process control of the process is directly related to the performance and the service life of a remanufactured product. The bearing is an important part in mechanical equipment and motors, and has the main functions of supporting machinery and motor rotating bodies, reducing friction coefficient in the operation process of the machinery and the motor rotating bodies, ensuring rotation precision of the machinery and the motor rotating bodies, and ensuring stable support, safe and reliable operation of a stator and a rotor of the motor.

The cylindrical roller bearing belongs to a separated type structure bearing, can bear larger radial load, is mostly suitable for medium and large motors, and is used in the occasions of large load and high-speed operation. When the bearing with the separation type structure is installed on a motor, the bearing is installed in a split mode, the bearing inner sleeve is installed on a motor shaft, the bearing outer sleeve and the roller are installed in a bearing chamber of a motor end cover, and then the end cover, the bearing outer sleeve, the shaft and the bearing inner sleeve are assembled together in a combined mode. The bearing inner sleeve and the shaft are in interference fit, and the process of heating the bearing inner sleeve to 100 ℃ and then installing the bearing inner sleeve on the shaft is needed during installation. The outer sleeve and the bearing chamber are in transition fit and relatively loose, a cold pressing process or a process of screwing into the bearing chamber is adopted, and the process should not damage or hurt the matching surface of the bearing inner sleeve and the rolling body.

The end cover is damaged or injured, the matching surface of the bearing inner sleeve and the rolling body is easy to happen when the end cover is assembled, when the end cover is assembled to the bearing inner sleeve, the end cover is hoisted to the excircle of the bearing inner sleeve by using the hoisting equipment, the end cover is often unbalanced in hoisting, the operation is not standard, when the rolling body moves towards the bearing inner sleeve, the rolling body and the bearing inner sleeve are not in the same plane or form a certain included angle, the end face angle of the rolling body or the matching surface of the bearing inner sleeve is lightly or heavily scratched, the quality hidden danger is left for the bearing, the friction coefficient of the rolling body and the bearing inner sleeve is increased, the temperature rise is caused during operation, the vibration is increased, and the service life of the bearing is.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a to the technical defect who mentions in the background art, provide an assembly type motor bearing, this kind of bearing is on the basis of current bearing, has increased a bearing guide pin bushing, and this bearing guide pin bushing is the guiding mechanism who makes after processing the old bearing endotheca of various specifications that the production line replaced.

In order to realize the purpose of the invention, the utility model adopts the technical scheme that: an assembly type motor bearing comprises a bearing inner sleeve and a bearing outer sleeve, wherein a rolling body is arranged on the inner circumference of the bearing outer sleeve in a matching mode, the bearing inner sleeve is sleeved in the bearing outer sleeve, and the bearing inner sleeve and the bearing outer sleeve are matched in a rolling mode through the rolling body; the bearing guide sleeve is also included; the bearing guide sleeve is of a hollow cylindrical structure, and two ends of the bearing guide sleeve are respectively provided with a guide table;

the bearing guide sleeve and the bearing inner sleeve are sequentially sleeved on the motor shaft in parallel along the mounting direction of the bearing outer sleeve.

Compared with the prior art, the bearing disclosed by the utility model is additionally provided with a bearing guide sleeve on the basis of the existing bearing, the bearing guide sleeve collects the old bearing inner sleeves of various specifications replaced by a production line, the inner circle and the outer circle of the old bearing inner sleeves are polished on a grinding machine and used as the bearing guide sleeve when a new bearing is assembled, when the end cover of the motor is hoisted, the outer sleeve with the rolling body is firstly poured into the bearing guide sleeve and then is parallelly moved to the new bearing inner sleeve, and at the moment, the bearing guide sleeve is withdrawn, so that the bearing guide sleeve can guide the bearing outer sleeve in the installation process in the bearing installation process, the collision caused by unstable hoisting in the process of sleeving the bearing outer sleeve is avoided, the bearing inner sleeve is ensured not to be scratched, the fault that the bearing outer sleeve scratches the bearing inner sleeve is greatly avoided, and the hidden danger of bearing assembly in the motor manufacturing process is eliminated, the quality of the remanufactured motor is guaranteed.

As a preferred technical scheme: the guide table is a guide round angle, and the width of the guide table is 3-5 mm.

The outer diameter of the bearing guide sleeve is 0.3-0.5mm smaller than that of the bearing inner sleeve. The inner diameter of the bearing guide sleeve is 0.08-0.15mm smaller than the outer diameter of the motor shaft, and the bearing guide sleeve and the motor shaft are in interference fit through hot assembly. The inner diameter of the bearing inner sleeve is 0.03-0.04mm smaller than the outer diameter of the motor shaft, and the inner sleeve and the motor shaft are in interference fit through hot assembly.

Drawings

Fig. 1 is a schematic view of the assembly position of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the middle bearing guide sleeve of the utility model.

In the figure: the bearing comprises a bearing inner sleeve 1, a bearing guide sleeve 2, an end cover bearing chamber 3, a bearing outer sleeve 4, a motor shaft 5 and rolling bodies 6.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Referring to the attached drawings 1-2, the utility model discloses an assembled motor bearing is on current motor assembly bearing's basis, has add a bearing guide pin bushing, the assembly of the bearing of being convenient for, the bearing overcoat that causes owing to hoist the circumstances such as unstable when avoiding installing collides with and the eccentric extrusion of bearing inner race.

The assembly type motor bearing comprises a bearing inner sleeve 1 and a bearing outer sleeve 4, wherein the bearing outer sleeve is installed in an end cover bearing chamber 3 in a transition mode, a rolling body 6 is arranged on the inner circumference of the bearing outer sleeve 4 in a matched mode, the bearing inner sleeve 1 is sleeved in the bearing outer sleeve 4, and the bearing inner sleeve and the bearing outer sleeve are in rolling fit through the rolling body. The bearing also comprises a bearing guide sleeve 2, the bearing guide sleeve 2 is of a hollow cylindrical structure, two ends of the bearing guide sleeve are respectively provided with a guide table, the guide table is a guide round angle, the width of the guide table is 3-5mm, and the guide table plays a role in guiding and circumferentially positioning the installation of the bearing outer sleeve.

The bearing guide sleeve and the bearing inner sleeve are sequentially sleeved on the motor shaft in parallel along the mounting direction of the bearing outer sleeve. The outer diameter of the bearing guide sleeve is 0.3-0.5mm smaller than that of the bearing inner sleeve. The inner diameter of the bearing guide sleeve is 0.08-0.15mm smaller than the outer diameter of the motor shaft, and the bearing guide sleeve and the motor shaft are in interference fit through hot assembly. The inner diameter of the bearing inner sleeve is 0.03-0.04mm smaller than the outer diameter of the motor shaft, and the inner sleeve and the motor shaft are in interference fit through hot assembly.

When assembling a new bearing, firstly, a new bearing inner sleeve is thermally assembled on a motor shaft, then a bearing guide sleeve is sleeved on the shaft (in a thermal assembly mode), the bearing guide sleeve is close to the bearing inner sleeve, the bearing inner sleeve and the bearing guide sleeve are installed together in parallel along the axis of the motor shaft, the bearing guide sleeve is positioned outside (namely the bearing outer sleeve is installed in the coming direction), when a motor end cover is hoisted, a bearing outer sleeve with rolling bodies is sleeved on the bearing guide sleeve, then the bearing outer sleeve is moved to the bearing inner sleeve in parallel along the axial direction, and after the bearing outer sleeve and the bearing guide sleeve are sleeved together, the bearing guide sleeve reversely exits from the bearing.

In the using process, one bearing guide sleeve can be matched with a plurality of groups of bearing inner sleeves and bearing outer sleeves with the same specification.

Claims

1. An assembly type motor bearing comprises a bearing inner sleeve and a bearing outer sleeve, wherein a rolling body is arranged on the inner circumference of the bearing outer sleeve in a matching mode, the bearing inner sleeve is sleeved in the bearing outer sleeve, and the bearing inner sleeve and the bearing outer sleeve are matched in a rolling mode through the rolling body; the bearing guide sleeve is characterized by further comprising a bearing guide sleeve; the bearing guide sleeve is of a hollow cylindrical structure, and two ends of the bearing guide sleeve are respectively provided with a guide table;

2. The assembled motor bearing of claim 1, wherein said guide lands are guide fillets having a width of 3-5 mm.

3. The assembled motor bearing of claim 1, wherein an outer diameter of the bearing guide sleeve is 0.3-0.5mm smaller than an outer diameter of the bearing inner sleeve.

4. An assembled motor bearing according to claim 1, wherein the inner diameter of the bearing guide sleeve is 0.08-0.15mm smaller than the outer diameter of the motor shaft, and the bearing guide sleeve and the motor shaft are in interference fit by hot assembly.

5. The assembled motor bearing of claim 1, wherein the inner diameter of the inner bearing sleeve is 0.03-0.04mm smaller than the outer diameter of the motor shaft, and the inner bearing sleeve and the motor shaft are in interference fit by hot assembly.