CN217890845U

CN217890845U - Bearing installation device

Info

Publication number: CN217890845U
Application number: CN202221948105.6U
Authority: CN
Inventors: 何治锋; 于博文; 杨汉臣; 崔海波
Original assignee: Fushun Coal Mine Motor Manufacturing Co Ltd
Current assignee: Fushun Coal Mine Motor Manufacturing Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-11-25
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a bearing installation device, which comprises a shaft, wherein the shaft comprises a bearing diameter and a shaft extension, a reference hole is arranged at the center of the end part of the shaft, the reference hole is in threaded connection with a support stud, a bushing is sleeved outside the shaft extension of the shaft, one end of the bushing is abutted against the shaft shoulder of the shaft, the other end of the bushing is abutted against the support stud, and a hydraulic nut is sleeved outside the support stud; the bearing is established to the outside cover of bush, set up the bearing and press the child between bearing and the hydraulic nut, the one side and the hydraulic nut butt of bearing press the child, the opposite side and the side butt of bearing, the internal diameter dimension that the bearing pressed the child is greater than the maximum external diameter dimension of bush, and the external diameter dimension of bush is crescent from the right side to the left, the utility model has the advantages of: the device uses the hydraulic nut to push the bearing, belongs to a cold-assembling process, does not need to heat the bearing, and simultaneously solves the problem of uneven stress when the bearing is driven into in a cold mode by pushing the bearing through the hydraulic nut.

Description

Bearing installation device

Technical Field

The utility model relates to a motor field specifically says so an installation positioner of axle type part.

Background

The bearing is one of the core parts of the motor, and the installation quality of the bearing directly influences the test result and the service life of the motor. Taking a deep groove ball bearing commonly used for a motor as an example, the common bearing installation modes are cold installation and hot installation. The cold-assembling usually uses the appropriate clamping fixture to support the bearing inner race, the operator uses the copper hammer to drive the bearing into the diameter of the bearing, the method is easy to operate, but because the bearing is stressed unevenly, the roller way of the bearing is possibly scratched, and two operators are needed to finish the operation together, the labor intensity is high, and the production efficiency is not high; the hot charging method is safe and reliable, but because the diameter of the heated bearing outer sleeve is increased, other parts can be mounted after the heated bearing outer sleeve is cooled, the production efficiency is influenced, and meanwhile, the hot charging method cannot be used due to the structures of some special end covers.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model discloses a bearing installation device.

The specific technical scheme is as follows:

a bearing installation device comprises a shaft, wherein the shaft comprises a bearing diameter and a shaft extension, a reference hole is formed in the center of the end part of the shaft, the reference hole is in threaded connection with a support stud, a bushing is sleeved on the outer side of the shaft extension of the shaft, one end of the bushing is abutted against the shaft shoulder of the shaft, the other end of the bushing is abutted against the support stud, and a hydraulic nut is sleeved on the outer side of the support stud; the bearing is established to the outside cover of bush, set up the bearing press between bearing and the hydraulic nut, one side and the side butt of opposite side and bearing of bearing press, the internal diameter of bearing press is greater than the maximum external diameter of bush, the external diameter of bush increases gradually from the right side to the left side.

The inner ring and the outer ring of the bearing are simultaneously abutted against the end face of the bearing press tire.

The minimum outer diameter dimension of the bushing is consistent with the outer diameter dimension of the support stud.

The bearing presses and sets up the heavy hole that goes on the child.

The utility model has the advantages that: the device uses the hydraulic nut to push the bearing, belongs to a cold-assembling process, does not need to heat the bearing, and solves the problem of uneven stress when the bearing is driven into the bearing by the hydraulic nut to realize single-person operation, thereby reducing the labor intensity of workers and improving the production efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of the bearing press.

Detailed Description

The present invention is described in detail with reference to the accompanying drawings, as shown in fig. 1 and fig. 2, a bearing mounting device includes a shaft 6, the shaft includes a bearing diameter 61 and a shaft extension 62, a reference hole 63 is provided at the center of the end of the shaft, the reference hole 63 is screwed with a support stud 3, a bushing 5 is sleeved outside the shaft extension 62 of the shaft, one end of the bushing 5 is abutted against the shaft shoulder of the shaft, the other end is abutted against the support stud 3, and a hydraulic nut 4 is sleeved outside the support stud 3; the bearing 1 is established to the outside cover of bush, set up bearing pressure child 2 between bearing and the hydraulic nut, one side and the hydraulic nut 4 butt of bearing pressure child, the opposite side and the side butt of bearing, the internal diameter of bearing pressure child is greater than the maximum external diameter of bush, the external diameter of bush increases gradually from right to left, promptly the bush sets up chamfer 51, as shown in fig. 2, in the direction of defending the bearing installation from right to left direction in the figure, the size of bush 5 can guarantee that the bearing internal diameter is pushed gradually on bearing diameter 61 in the in-process of grow gradually.

The minimum outer diameter dimension of the bushing corresponds to the outer diameter dimension of the support stud 3.

The bearing press is provided with a weight removing hole; the weight removing holes are uniformly distributed on the end face of the bearing press tire.

The utility model discloses a theory of operation is: firstly, a bush 5 is arranged on a shaft extension 62, the shaft extension 62 is connected with a bearing diameter 61 and is axially fixed by a support stud 3, then a bearing pressing tire 2 is arranged, finally a hydraulic nut 4 is arranged on the support stud 3, the bearing pressing tire is pushed by the hydraulic nut, the inner ring of the bearing is gradually adapted to the outer diameter size of the bush in the pushing process, and when the size of the inner ring of the bearing is suitable for the outer diameter size of the bearing diameter, the hydraulic nut 4 is further pushed to smoothly push the bearing to the bearing diameter.

Claims

1. The utility model provides a bearing installation device, includes the axle, the axle includes bearing footpath and axle extension, the tip center department of axle sets up the benchmark hole, its characterized in that: the reference hole is in threaded connection with the support stud, a bushing is sleeved on the outer side of the shaft extension of the shaft, one end of the bushing is abutted against the shaft shoulder of the shaft, the other end of the bushing is abutted against the support stud, and the hydraulic nut is sleeved on the outer side of the support stud; the bearing is established to the outside cover of bush, set up the bearing press between bearing and the hydraulic nut, one side and the side butt of opposite side and bearing of bearing press, the internal diameter of bearing press is greater than the maximum external diameter of bush, the external diameter of bush increases gradually from the right side to the left side.

2. A bearing mounting arrangement according to claim 1, wherein: the inner ring and the outer ring of the bearing are simultaneously abutted against the end face of the bearing press tire.

3. A bearing mounting arrangement according to claim 1, wherein: the minimum outer diameter dimension of the bushing is consistent with the outer diameter dimension of the support stud.

4. A bearing mounting arrangement according to claim 1, wherein: the bearing presses and sets up the heavy hole that goes on the child.