A front cover structure of an explosion-proof brushless motor

Abstract

The invention provides a front cover structure for an explosion-proof brushless motor. Three-level step holes are formed in the center of a front cover; corresponding three-level steps are formed on a shaft; the three-level step holes of the front cover are sleeved outside the third level step of the shaft and are in clearance fit with the shaft to form a cylindrical explosive-proof surface; a bearing used for supporting the shaft is fixed in the second level step hole of the front cover; the bearing is arranged on the second level step of the shaft; a transition sleeve is arranged in the first level step hole of the front cover and is positioned between the first level step of the shaft and the front cover; an oil seal is arranged between the transition sleeve and the shaft and is arranged in the transition sleeve; a compression flange which compresses the transition sleeve so as to axially compress the bearing is arranged outside the transition sleeve; and the compression flange is arranged on the front cover. The front cover structure solves the problems of the current similar products, is ingenious in structure, convenient to assemble and maintain and low in manufacturing cost, greatly improves the performance of the explosion-proof brushless motor and can produce obvious social benefit after being popularized in batch.

Description

technical field [0001] The invention relates to a front cover structure of an explosion-proof brushless motor without an explosion-proof sleeve. Background technique [0002] The front cover structure of the explosion-proof brushless motor is one of the key structures of the explosion-proof brushless motor, and its structure directly affects the performance of the explosion-proof brushless motor. The current disadvantages are: due to the matching use of the explosion-proof sleeve and the front cover, two explosion-proof surfaces of the end surface and the cylindrical surface are produced. Because the explosion-proof sleeve needs to compress the bearing and ensure the explosion-proof end face, it is not easy to guarantee the explosion-proof requirements of the end face. The formation of the cylindrical explosion-proof surface is guaranteed by the accuracy of the explosion-proof sleeve, which makes the processing and manufacturing costs of the explosion-proof sleeve higher; t...

AI Technical Summary

Problems solved by technology

The current deficiency is: due to the matching use of the explosion-proof sleeve and the front cover, two explosion-proof surfaces of the end surface and the cylindrical surface are produced.

When later generations solve problems, they always think of solutions from the aspect of convenient installation, or improve the structure of the explosion-proof sleeve itself, but there has never been a fundamental breakthrough.

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