CN-121584930-B - Bearing detachable mechanism and motor

Abstract

The invention provides a bearing detachable mechanism and a motor, which relate to the technical field of motors and comprise a sleeve assembly, a steel shaft assembly and at least one bearing which is arranged in the sleeve assembly and is used for connecting the sleeve assembly and the steel shaft assembly, the steel shaft assembly comprises a steel shaft main body and a first flange arranged at one end of the steel shaft main body, the bearing is arranged at one end, far away from the first flange, of the steel shaft main body, the other end of the steel shaft main body is detachably connected with the rotor through the first flange, and the sleeve assembly is detachably connected with the rear cover. According to the invention, the bearing detachable mechanism is additionally arranged between the rotor and the stator rear cover, so that the sleeve assembly is detachably connected with the rear cover, the steel shaft assembly is detachably connected with the rotor, and then the bearing is combined, so that the bearing is prevented from being directly connected with the rotor and the stator, the core structure of the motor is not directly damaged even if the bearing is worn, and only the damaged old bearing is needed to be replaced or the bearing detachable mechanism is needed to be integrally replaced, and the whole motor is not needed to be scrapped.

Inventors

• WU MIN
• WU QICAI
• LI YI

Assignees

• 南昌三瑞智能科技股份有限公司

Dates

Publication Date

20260508

Application Date

20260127

Claims (9)

1. 1. A bearing release mechanism for connecting a stator to a rotor, the stator comprising a rear cover, the bearing release mechanism comprising: the steel shaft assembly comprises a steel shaft main body and a first flange arranged at one end of the steel shaft main body, the bearing is arranged at one end, far away from the first flange, of the steel shaft main body, the other end of the steel shaft main body is detachably connected with the rotor through the first flange, and the sleeve assembly is detachably connected with the rear cover; the sleeve assembly comprises a sleeve main body and a heating ring, wherein a ring groove is formed in the outer wall of the sleeve main body, the heating ring is matched with the ring groove, and the heating ring is a heating resistor element.
2. 2. The bearing removable mechanism of claim 1, further comprising a first connection structure comprising a plurality of first through holes provided to the first flange and a plurality of first connectors provided to the rotor, the first through holes being adapted to the first connectors to removably connect the steel shaft body to the rotor.
3. 3. The bearing removable mechanism of claim 1, wherein the sleeve assembly further comprises a second flange disposed at one end of the sleeve body, the bearing and the steel shaft body are nested in the sleeve body in sequence, and the second flange is removably connected to the rear cover.
4. 4. The bearing detachable mechanism according to claim 3, further comprising a second connection structure including a plurality of second through holes provided in the second flange, a plurality of stopper holes provided in the rear cover, and a plurality of second connection members, the second through holes being adapted to the stopper holes and detachably connected to the second connection members so that the sleeve body is detachably connected to the rear cover.
5. 5. The bearing detachable mechanism according to claim 1, wherein the bearing detachable mechanism comprises two bearings, the two bearings are arranged at two inner ends of the sleeve body, and the annular groove is arranged at a middle section of the distance between the two bearings.
6. 6. The detachable bearing mechanism according to claim 3, wherein the rear cover comprises a rear cover body and a containing through hole arranged in the rear cover body, the containing through hole is used for containing the sleeve body, a plurality of ribs are arranged on the inner wall of the containing through hole, two adjacent ribs form a groove, the ribs are abutted against the sleeve body, and a heat dissipation channel is formed by the sleeve body and the groove in a surrounding mode.
7. 7. The bearing detachable mechanism according to claim 6, wherein the rear cover body is provided with a wire through hole, the wire through hole communicating with the accommodation through hole.
8. 8. The bearing removable mechanism of claim 1, further comprising a locking member disposed at an end of the steel shaft body remote from the first flange and removably coupled to the steel shaft body to lock the steel shaft body to the bearing to prevent loosening of the steel shaft body; The locking piece comprises a gasket and a nut, wherein threads are arranged at one end, far away from the first flange, of the steel shaft main body, the gasket is sleeved on the steel shaft main body, the nut is in threaded fit with the threads and is combined with the gasket to fix the steel shaft main body and the bearing, and the outer diameter of the gasket is between the outer diameter of the bearing and the inner diameter of the bearing.
9. 9. An electric machine comprising a stator and a rotor, characterized in that the electric machine further comprises a bearing release mechanism according to any of the preceding claims 1-8, said bearing release mechanism connecting the stator and the rotor.

Description

Bearing detachable mechanism and motor Technical Field The invention relates to the technical field of motors, in particular to a bearing detachable mechanism and a motor. Background The motor generally includes a stator and a rotor, the rotor and stator being connected by a direct interference fit through a bearing. Specifically, the stator comprises a rear cover, and the assembly of the rotor and the stator is realized by directly pressing the bearing in the motor into the rear cover through interference fit. However, after long-time use, the bearing and the rear cover are rubbed and can loosen and further wear the rear cover, and the inside of the bearing is also worn, so that the gap between the bearing and the rear cover is larger and larger, and even if the iron core coil can work normally under the condition, the motor cannot normally run due to the fact that the bearing cannot be fixed, which is equivalent to scrapping of the whole motor. In the prior art, if the whole motor is required to be prevented from being scrapped due to damage of the bearing, only the damaged bearing can be pulled out for replacement, but in the prior assembly, the damaged bearing is difficult to pull out due to the fact that the bearing is directly pressed into the rear cover in an interference fit mode, and on the other hand, even if the damaged bearing can be pulled out, the rear cover cannot be damaged, and further a new bearing cannot be pressed into for replacement. Therefore, in the prior art, when the bearing is damaged, the bearing cannot be directly replaced, so that the whole motor cannot be normally used, and the use cost of the motor is increased. Disclosure of Invention Based on the above, the invention aims to provide a bearing detachable mechanism and a motor, which are used for solving the technical problems that in the prior art, the whole motor is required to be scrapped in connection with the damage of the bearing of the motor, and the use cost of the motor is increased. In one aspect, the present invention provides a bearing detachable mechanism for connecting a stator and a rotor, the stator including a rear cover, the bearing detachable mechanism comprising: the sleeve assembly, the steel shaft assembly and locate the inside of sleeve assembly just connects the sleeve assembly with at least one bearing of steel shaft assembly, the steel shaft assembly includes the steel shaft main part and locates the first flange of steel shaft main part one end, the bearing is located the steel shaft main part is kept away from the one end of first flange, the other end of steel shaft main part passes through first flange with the rotor can dismantle the connection, the sleeve assembly with the back lid can dismantle the connection. In addition, the bearing detachable mechanism according to the invention can also have the following additional technical characteristics: Further, the bearing detachable mechanism further comprises a first connecting structure, the first connecting structure comprises a plurality of first through holes formed in the first flange and a plurality of first connecting pieces formed in the rotor, and the first through holes are matched with the first connecting pieces so that the steel shaft main body can be detachably connected with the rotor. Further, the sleeve assembly comprises a sleeve main body and a second flange arranged at one end of the sleeve main body, the bearing and the steel shaft main body are sequentially nested in the sleeve main body, and the second flange is detachably connected with the rear cover. Further, the bearing detachable mechanism further comprises a second connecting structure, the second connecting structure comprises a plurality of second through holes formed in the second flange, a plurality of limiting holes formed in the rear cover and a plurality of second connecting pieces, and the second through holes are matched with the limiting holes and are detachably connected with the second connecting pieces so that the sleeve body can be detachably connected with the rear cover. Further, the bearing detachable mechanism further comprises a heating ring, a ring groove is formed in the outer wall of the sleeve body, and the heating ring is matched with the ring groove. Further, the bearing detachable mechanism comprises two bearings, the two bearings are arranged at two ends of the inner part of the sleeve body, and the circular ring groove is positioned at the middle section of the distance between the two bearings. Further, the rear cover comprises a rear cover main body and an accommodating through hole arranged in the rear cover main body, wherein the accommodating through hole is used for accommodating the sleeve main body, a plurality of ribs are arranged on the inner wall of the accommodating through hole, two adjacent ribs form a groove, the ribs are abutted against the sleeve main body, and a heat dissipation channel is formed by the sleeve main body and