Bearing structure and motor with same

Abstract

The invention provides a bearing structure and a motor with the same, the bearing structure comprises a bearing inner ring, a bearing outer ring, a rotating structure and a supporting structure, and the rotating structure is arranged between the bearing inner ring and the bearing outer ring; the supporting structure can support the bearing outer ring, so that a gap between the bearing outer ring and the rotating structure is within a first preset gap range; and / or, the supporting structure can support the second bearing inner ring, so that the gap between the bearing inner ring and the rotating structure is within the preset gap range. According to the bearing structure and the motor with the same, bearing locking and boring sweeping faults can be effectively prevented.

Description

technical field [0001] The application belongs to the technical field of motors, and in particular relates to a bearing structure and a motor having the same. Background technique [0002] At present, motors in harsh production environments (such as salt fields, smelting work environments, etc.) will reduce the lubrication quality of grease and corrode the smoothness of the ball surface. The lack of oil in the raceway of the inner and outer rings of the balls will cause semi-dry friction or dry friction without oil lubrication. , the high temperature causes the hardness of the metal structure of the ball to change, wear out and deform, and the deformed ball cannot fix the stability of the rotor rotation in the ring of the bearing structure, resulting in axial displacement and radial runout of the rotor, and cannot fix the rotation accuracy of the rotor. The matching gap between the rotor and the stator is improved, so that the rotor directly touches the stator, causing the r...

AI Technical Summary

Problems solved by technology

[0002] At present, motors in harsh production environments (such as salt fields, smelting work environments, etc.) will reduce the lubrication quality of grease and corrode the smoothness of the ball surface. The lack of oil in the raceway of the inner and outer rings of the balls will cause semi-dry friction or dry friction without oil lubrication. , the high temperature causes the hardness of the metal structure of the ball to change, wear out and deform, and the deformed ball cannot fix the stability of the rotor rotation in the ring of the bearing structure, resulting in axial displacement and radial runout of the rotor, and cannot fix the rotation accuracy of the rotor. The matching gap between the rotor and the stator is improved, so that the rotor directly touches the stator, causing the rotor to scrape and sweep the stator

Long-term overload operation will increase the resistance of the motor gear or wheel drive (the gravity of the object and the driving force of the motor contact and become resistance), resulting in uneven force on the bearing structure of the fixed rotor of the motor, and the balls of the bearing structure are in the ferrule. Aggravated wear causes the gap to become larger and produces a radial offset of the rotor shaft, which also changes the matching gap between the rotor and the stator, directly affecting the smooth output of the motor power

During the operation of the motor, due to the wear and tear of the bearing structure, the rotor often scrapes the stator coil and causes the failure of the sweeping and burning machine. At the same time, it will also affect the motor shaft noise and life.

Motors shipped to foreign countries need to be transported to the customer site by sea and road transportation. However, after road and sea transportation, there have been many projects with abnormal noise, locking and sweeping failures of the bearing structure at the end of the motor. , which seriously affects the matching operation of the motor and the customer's load performance

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