Permanent magnet direct driving motor with large axial directional load

Abstract

An axial big load permanent magnetism direct driving motor comprises a shell, a rotor, a stator, a bearing inner cap, an end closure, a rotating shaft, a thrust bearing, an upper steady bearing, and a large aspect ration end closure. The rotor adopts a permanent magnetism structure. The motor is characterized in that the bearing end of the rotating shaft is provided with the large aspect ration end closure; the diameter of the large aspect ration end closure is same as the outside diameter of the shell of the motor; the thrust bearing adopts a spherical roller thrust bearing which is arrangedbetween the rotating shaft of the motor and a bearing block of the large aspect ration end closure; the lower part of the spherical roller thrust bearing is added with a lower steady bearing to be arranged on the end of the rotating shaft and embedded in the large aspect ration end closure; a bearing housing is formed between the lower steady bearing and the spherical roller thrust bearing; the inner cap of the bearing is above the spherical roller thrust bearing and is arranged on the upper part of the large aspect ration end closure; an oil chamber is formed between the inner cap of the bearing and the large aspect ration end closure and is provided with liquid lubricant; the bearing block of the large aspect ration end closure between the bearing housing and the oil chamber is providedwith a plurality of oil passage through holes.

Description

1. Technical field [0001] The invention relates to a permanent magnet direct drive motor with large axial load. 2. Background technology [0002] Axial large load motor is a motor with special structure and purpose that can directly act on the motor itself with the axial force in the motor load (especially the large axial force in tons). In the existing motors with large axial loads, ordinary thrust bearings are generally used to convert the axial force. During the operation of the motor, grease is used to lubricate and dissipate heat, so that the thrust bearings can maintain normal and stable working conditions. The disadvantages of the motor with this structure are: during the operation of the motor, the thrust bearing bears a large axial force, the thrust bearing generates a lot of heat due to friction, and the small bearing chamber structure and poor fluidity lubrication Grease cannot dissipate heat for the thrust bearing in a timely and rapid manner, resulting in overh...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects of slow heat dissipation and temperature rise in the existing motor, the present invention provides a permanent magnet direct drive motor with an improved structure

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