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Sealing structure for extension end of motor shaft

A technology of sealing structure and motor shaft, which is applied in the direction of engine sealing, electromechanical devices, electrical components, etc., can solve the problems of easy to wear motor shaft, shorten the life of seals, and seals are easily affected by the environment, so as to extend the reliability of sealing , prevent air pressure changes, reduce the effect of service life

Pending Publication Date: 2018-08-21
JING JIN ELECTRIC TECHNOLOGIES (BEIJING) CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a sealing structure for the motor shaft extension end, so as to solve the problems that the seals of the existing motor sealing structure are easily affected by the environment, the life of the seals is shortened, and the motor shaft is easy to wear

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  • Sealing structure for extension end of motor shaft
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Embodiment Construction

[0023] The seal of the existing motor sealing structure is easily affected by the environment, the life of the seal is shortened, and the motor shaft is easy to wear, so the motor needs frequent maintenance, which cannot meet the use requirements.

[0024] In order to solve the problem of short service life of the seals and easy wear of the motor shaft in the existing motor sealing structure, the present invention adopts a double oil seal structure, forming an oil storage space between the two oil seals, and injecting lubricating oil, which can provide oil seals necessary for normal operation. lubricated environment, thereby extending oil seal life and seal reliability.

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, the sealing structure of a motor shaft en...

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Abstract

The invention belongs to the technical field of shaft sealing, in particular to a sealing structure of an extension end of a motor shaft. The structure comprises a motor end cover and a motor shaft extension end. The motor shaft extension end is arranged on the motor end cover through a bearing. A double oil sealing structure is arranged between the motor end cover and the motor shaft extension end. The double oil sealing structure comprises an oil sealing seat connected with the motor end cover and an outer oil sealing and an inner oil sealing arranged in the oil sealing seat. The outer oil sealing and an inner oil sealing are arranged opposite with each other and are matched with the oil sealing seat in interference mode. An oil storage chamber is arranged between the outer oil sealing and the inner oil sealing and an oil sealing ring is accommodated in the oil storage chamber. By designing two oil sealings, when there is no lubricating medium inside the motor, an oil storage space is formed in the middle of the two oil sealings and lubricating oil is injected into the middle of the two oil sealings, so that the lubricating environment necessary for normal operation of the oil sealing can be provided, so that the service life and the sealing reliability of the oil sealing are prolonged.

Description

technical field [0001] The invention belongs to the technical field of shaft sealing, and in particular relates to a sealing structure of a shaft extension end of a motor. Background technique [0002] Since the motor shaft is a rotating part, it is difficult to ensure the waterproofness of the shaft penetration, and the motor is prone to water ingress and even burnt, which affects the service life of the motor. Existing motor sealing structures mostly use skeleton seals, but the seals are easily affected by the environment, and except for oil-cooled motors, there is no lubricating medium inside the motor, and the life of the seals is shortened without lubrication, and the motor shaft is easy to wear, so The motor needs frequent maintenance, which cannot meet the requirements of use. In addition, if the front end bearing of the motor is not properly protected, it is very easy to cause damage to the bearing, which in turn leads to motor failure. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): H02K5/124
CPCH02K5/124F16J15/324H02K5/173
Inventor 裴正强余平靳海涛刘鹏飞
Owner JING JIN ELECTRIC TECHNOLOGIES (BEIJING) CO LTD
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