Main speed reducer housing for light car axle

Abstract

The invention discloses a main speed reducer housing for a light car axle, wherein a step for mounting a bearing is directly cast on the speed reducer housing; the bearing is directly assembled on the speed reducer housing; a driving bevel gear is directly assembled in a bearing hole; a through hole formed in a mounting surface of the speed reducer housing is directly connected with an axle housing; and reinforced ribs are arranged at the corresponding positions of the front bearing and the rear bearing both used for assembling the driving bevel gear, as well as the bearing of a differential gear. The main speed reducer housing for the light car axle effectively improves the engagement precision of the driving bevel gear; as the guide bearing is not adopted to support the driving bevel gear, the space is saved, the space base is provided for the wide tooth surface design of the gear, and the design concept of the high power density of the speed reducer is finally realized; through the reasonable arrangement and the optimized calculation of the supporting ribs, the basic wall thickness of the speed reducer housing can achieve the minimum degree of 4mm without influencing the service life of the gear, and realize the light scale design; and bearing burning and gear early failure are avoided through the verification of the rack and the road experiment, the matched requirements for the whole vehicle are satisfied.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an integral [0002] Cast housing of final drive. Background technique [0003] The main reducer housing is one of the core components in the axle assembly, and its structure and strength directly affect the performance and service life of the entire reducer. Such as figure 1 Shown is the position of the existing reducer housing in the reducer assembly, and the parts connected with the reducer housing: serial number 1 is the reducer housing, serial number 2 is the driving bevel gear, and serial number 3 is the passive bevel Gears, No. 4 and No. 5 are the front and rear bearings supporting the driving bevel gear, No. 6 is the guide bearing supporting the driving bevel gear, No. 7 is the bearing seat supporting the front and rear bearings of the driving bevel gear, and the bearing seat 7 is connected by bolt 9 On the reducer housing 1, the serial number 8 is a d...

AI Technical Summary

Problems solved by technology

For light-duty axles, the overall size and specifications are relatively small, and the bolt connection and guide bearings are arranged in a limited space, and the space is cramped.

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