Welded-type rear cover of automobile through axle housing

Abstract

The invention discloses a welded-type rear cover of an automobile through axle housing, belonging to an automobile drive axle. The welded-type rear cover of an automobile through axle housing is characterized in that the welded-type rear cover is mainly installed and welded by a cover body and a connection base, wherein the cover body is in a cavity round-basin shape; a vertical frustum-shaped bulge is arranged on the right of the center of the front surface of the cover body; the left part and the right part of the front surface of the cover body are both circular-arc planes; the upper part of the left circular-arc plane of the cover body is provided with a base hole for welding the connection base; the lower part of the left circular-arc plane of the cover body is provided with an oil hole with an internal thread for screwing an oil-drainage plug screw; the connection base is a step-shaped cylinder, wherein the external diameter of the rear-end section of the step-shaped cylinder is small; the upper circumference of the front-end section of the connection base is evenly provided with three semicircle lugs; the lugs are evenly provided with connection screw holes; the connection base is provided with a center step hole, wherein the diameter of the rear-end section of the center step hole is small, and the diameter of the front-end section of the center step hole is big; the center step hole is used for the through shaft to correspondingly penetrate through and being screwed with bolts for fastening and positioning; and the rear cover and the through axle housing are welded. The welded-type rear cover has the advantages of good welding performance and light weight and has small possibility of leaking oil.

Description

technical field [0001] The invention belongs to an automobile driving axle, in particular to a rear cover of an automobile penetrating axle housing. technical background [0002] The back cover of the existing car through-axle housing is mostly made of heavy castings. Often due to the thin wall of the back cover, casting defects are prone to occur during the casting process, resulting in oil leakage from the back cover, and the weldability of the cast back cover is poor. It is not easy to be welded to the through-axle housing, and it is also prone to open welding and oil leakage during use after welding. Contents of the invention [0003] The purpose of the present invention is to provide a welded rear cover for automobiles through the axle housing, which has light weight, good strength, good weldability with the axle housing, is not easy to leak oil, and has a long service life. [0004] The object of the present invention is achieved in this way, a welded rear cover for...

AI Technical Summary

Problems solved by technology

[0002] The back cover of the existing car through-axle housing is mostly made of heavy castings. Often due to the thin wall of the back cover, casting defects are prone to occur during the casting process, resulting in oil leakage from the back cover, and the weldability of the cast back cover is poor. It is not easy to be welded to the through-axle housing, and it is also prone to open welding and oil leakage during use after welding

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