AU2015101318A4 - A bearing assembly structure - Google Patents

Abstract

Title: A bearing Assembly Structure Abstract The invention relates to a bearing assembly structure which belongs to the technical field of assembly of motor bearings. The bearing assembly structure comprises motor end covers, wherein bearing chambers provided with bearings are formed on the motor end covers, a rubber sleeve in a cup-shaped structure is arranged in each bearing chamber, each rubber sleeve comprises a cylindrical part and a bottom part, and the outer wall of an outer ring of each bearing is matched in the cylindrical part of the rubber sleeve. The processing cost of the bearing assembly structure is lower, and the bearing assembly structure can better ensure the coaxiality between the bearings and a motor rotating shaft.

Description

Description A bearing Assembly Structure Technical Field The invention relates to a bearing assembly structure which belongs to the technical field of assembly of motor bearings. Background of the Invention Bearing chambers for setting bearings are often required to be processed on front and rear end covers of a motor and an outer ring of each bearing is directly closely matched in the bearing chamber. In the above structure, the requirement on the processing precision of the inner walls of the bearing chambers is higher, otherwise, the following problems can be caused: the coaxiality between the bearings assembled in the bearing chambers and a motor rotating shaft is poorer, the operation of a motor is affected and the processing cost is also higher. Summary of the Invention The invention aims at providing a bearing assembly structure which has lower processing cost and can better ensure the coaxiality between bearings and a motor rotating shaft, and solve the defect that the requirement on the processing precision of the inner walls of bearing chambers is higher in the prior art, otherwise, the following problems can be caused: the coaxiality between the bearings assembled in the bearing chambers and a motor rotating shaft is poorer, the operation of a motor is affected and the processing cost is also higher. The above technical purpose of the invention is mainly solved through the following technical scheme: the bearing assembly structure comprises motor end covers, wherein the bearing chambers provided with the bearings are formed on the motor end covers, a rubber sleeve in a cup-shaped structure is arranged in each bearing chamber, each rubber sleeve comprises a cylindrical part and a bottom part, and the outer wall of an outer ring of each bearing is matched in the cylindrical part of the rubber sleeve, a through hole for enabling the motor rotating shaft to penetrate is arranged at the bottom part of each rubber sleeve. Wherein, a rubber ring is arranged between the inner wall of each bearing chamber and the outer ring of the bearing, thereby reducing the requirement on the processing precision of the inner walls of the bearing chambers, avoiding the need of fine processing of the bearing chambers, further reducing the processing cost, and better ensuring the coaxiality between the bearings and the motor rotating shaft; simultaneously, the rubber rings can play a damping role for a motor rotor to a certain extent. Preferentially, a gap is arranged between the inner surface of the bottom part of each rubber sleeve and the end surface of the bearing, thereby avoiding the frictional contact between the end surface of an inner ring of the motor and the bottom parts of 1 the rubber rings, reducing the resistance to the motor rotor and protecting the rubber sleeves from being abraded. Brief Description of the Drawings Figure 1 is a schematic diagram of structure of the invention. Figure 2 is a local amplified view of A part in Figure 1. Detailed Description of the Invention In combination of the figures, the technical scheme of the invention is further specifically described through the following embodiments. Embodiment 1: as shown in Figure 1 and Figure 2, bearing chambers 3 provided with bearings are respectively formed on a front end cover 1 and a rear end cover 2 of a motor, a rubber sleeve 4 in a cup-shaped structure is arranged in each bearing chamber 3, each rubber sleeve 4 comprises a cylindrical part 41 and a bottom part 42, the outer wall of an outer ring of each bearing 5 is matched in the cylindrical part 41 of the rubber sleeve 4, a through hole 6 for enabling a motor rotating shaft to penetrate is arranged at the bottom part of each rubber sleeve 4, a gap is arranged between the inner surface of the bottom part 41 of each rubber sleeve 4 and the end surface of the bearing 5, and the height of the rubber sleeves 4 is greater than that of the bearing chambers 3. Wherein, a rubber ring is arranged between the inner wall of each bearing chamber and the outer ring of the bearing, thereby reducing the requirement on the processing precision of the inner walls of the bearing chambers, avoiding the need of fine processing of the bearing chambers, further reducing the processing cost, and better ensuring the coaxiality between the bearings and the motor rotating shaft; simultaneously, the rubber rings can play a damping role for a motor rotor to a certain extent. 2

Claims (2)

1. A bearing assembly structure comprises motor end covers, wherein bearing chambers provided with bearings are formed on the motor end covers, and the bearing assembly structure is characterized in that a rubber sleeve in a cup-shaped structure is arranged in each bearing chamber, each rubber sleeve comprises a cylindrical part and a bottom part, and the outer wall of an outer ring of each bearing is matched in the cylindrical part of the rubber sleeve, a through hole for enabling a motor rotating shaft to penetrate is arranged at the bottom part of each rubber sleeve.

2. The bearing assembly structure according to claim 1 characterized in that a gap is arranged between the inner surface of the bottom part of each rubber sleeve and the end surface of the bearing. 3