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High-speed motor bearing sealing device

A technology of bearing sealing and high-speed motors, which is applied in the direction of electromechanical devices, casings/covers/supports, electrical components, etc., can solve the problems of polluting the stator and rotor winding insulation of motors, oil mist easily entering the inner cavity of motors, etc., and achieve extended use The effect of longevity

Active Publication Date: 2014-04-23
CHONGQING ELECTRIC MACHINE FEDERATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a high-speed motor bearing sealing device to solve the problem that the oil mist in the above-mentioned motor bearing sealing structure easily enters the inner cavity of the motor and pollutes the insulation of the stator and rotor windings of the motor

Method used

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  • High-speed motor bearing sealing device
  • High-speed motor bearing sealing device

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Embodiment Construction

[0010] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0011] like figure 1 The high-speed motor bearing sealing device shown includes a rotating shaft 1, an end cover 2, a sealing cover 3, a shaft sleeve 4 and a bearing. The end cover 2 and the shaft sleeve 4 are arranged in the circumferential direction of the rotating shaft 1, and the bearing is arranged on the shaft sleeve. One side of the sealing cover 3 is fixed with the end cover 2, the other side of the sealing cover 3 is provided with a ring of rectangular grooves 31 of the sealing cover, and one side of the sleeve 4 is provided with a ring of rectangular grooves 41 of the sleeve along the circumference of the sleeve, such as figure 2 As shown, the shaft sleeve 4 is provided with a plurality of "R"-shaped oil return grooves 42 with notches facing the bearing, and the rectangular groove 31 of the seal cover and the rectangular groove 4...

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Abstract

The invention discloses a high-speed motor bearing sealing device comprising a rotating shaft, an end cap, a sealing cover, a shaft sleeve and a bearing. The end cap and the shaft sleeve are arranged on the rotating shaft. The bearing is arranged on the shaft sleeve. One side of the sealing cover is fixed with the end cap, and the other side of the sealing cover is provided with a circle of rectangular grooves. One side of the shaft sleeve is provided with a circle of the rectangular grooves along the circumferential direction of the shaft sleeve. The rectangular grooves of the sealing cover and the rectangular grooves of the shaft sleeve are mutually engaged so that a labyrinth type sealing structure is formed. The labyrinth type sealing structure is arranged on the bearing side. The shaft sleeve is provided with multiple oil return grooves, of which groove openings orient towards the bearing. Pollution to insulation of stator and rotor windings caused by the fact that oil mist in a motor bearing chamber enters into a motor internal cavity can be avoided so that the motor windings can be protected and the service life of the whole motor is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a high-speed motor bearing sealing device. Background technique [0002] At present, due to the poor processing and assembly precision of the sliding bearing, oil leakage usually occurs when the sliding bearing is assembled on the motor. In order to solve this problem, the patent name is "oil leakage prevention structure of thin oil lubricated high-speed motor", and the patent No. 201220550763.X discloses an oil leakage prevention structure of the motor. An annular ferrule is arranged on the rotating shaft, the sealing cover and the annular ferrule both have a rectangular groove-shaped section, and the sealing cover and the rectangular groove-shaped cross-section of the annular ferrule cooperate with each other to form a labyrinth sealing structure. However, the above structure still has the following problems, that is, the oil mist in the bearing chamber can still enter the in...

Claims

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Application Information

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IPC IPC(8): H02K5/16
Inventor 汪同斌王世洪章丽桥杨海燕
Owner CHONGQING ELECTRIC MACHINE FEDERATION
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