SEALING STRUCTURE OF MOTOR SHAFT EXTENSION END - JING JIN ELECTRIC TECH CO LTD

Title:

SEALING STRUCTURE OF MOTOR SHAFT EXTENSION END

Document Type and Number:

WIPO Patent Application WO/2019/184357

Kind Code:

A1

Abstract:

The invention belongs to the technical field of shaft sealing, and particularly relates to a sealing structure of a motor shaft extension end. The sealing structure comprises a motor end cover and a motor shaft extension end. The motor shaft extension end is mounted on the motor end cover via 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 to the motor end cover, and an outer oil seal and an inner oil seal arranged in the oil sealing seat. The outer oil seal and the inner oil seal are arranged opposite to each other and are both in an interference fit with the oil sealing seat. An oil storage chamber, and an oil sealing spacer ring accommodated in the oil storage chamber are arranged between the outer oil seal and the inner oil seal. By designing two oil seals, when there is no lubricating medium inside a motor, an oil storage space is formed between the two oil seals and lubricating oil is injected in same, so that the lubricating environment required for normal operation of the oil seal can be provided, so that the service life and the sealing reliability of the oil seal are improved.

Inventors:

PEI ZHENGQIANG (CN)
YU PING (CN)
JIN HAITAO (CN)
LIU PENGFEI (CN)

Application Number:

PCT/CN2018/114170

Publication Date:

October 03, 2019

Filing Date:

November 06, 2018

Export Citation:

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Assignee:

JING JIN ELECTRIC TECH CO LTD (CN)

International Classes:

H02K5/124

Foreign References:

CN108429384A	2018-08-21
CN201134713Y	2008-10-15
CN206452224U	2017-08-29
CN107005123A	2017-08-01
US20140255224A1	2014-09-11

Other References: