Rear axle housing with high-intensity brake bottom plates

Abstract

The invention discloses a rear axle housing with high-intensity brake bottom plates. The rear axle housing with the high-intensity brake bottom plates comprises a housing body, the pair of brake bottom plates is symmetrically installed at the flange plate installation positions of the two ends of the housing body, each brake bottom plate is provided with a center shaft hole, the center shaft holes are in fit with the flange plate installation positions of the housing body in outer contour, one end of a plate body of each brake bottom plate is provided with a supporting pin hole, the other end of the plate body of each brake bottom plate is provided with a cam shaft installation hole in the axial direction of the housing body, and the brake bottom plates are welded to the housing body. The rear axle housing with the high-intensity brake bottom plates is better in rigidity, the tissue defect of materials is overcome in the forging process, the mechanical property is improved, and the brake bottom plates are higher than an existing casting brake bottom plate in yield strength and tensile strength of materials.

Description

technical field [0001] The invention relates to the technical field of vehicle axles, more specifically, it relates to a high-strength brake floor rear axle housing. Background technique [0002] The vehicle braking system is an important part of the vehicle and the key to ensuring the normal driving of the vehicle. Its working principle is to use the mutual friction between the non-rotating elements connected to the frame and the rotating elements connected to the wheels (or drive shafts) to resist the turning or tendency of the wheel to turn. The brake system is mainly composed of brake base plate, brake drum, brake shoe, return spring, positioning pin and other components. The brake base plate is installed on the fixed position of the axle, and it is fixed. There are brake shoes, return springs and positioning pins on it, and it bears the rotational torque during braking. Most of the brake base plates on the existing middle and rear axle housings are cast with ZG270-480...

AI Technical Summary

Problems solved by technology

Since the brake base plate needs to be connected with the brake flange bolts, a ring-shaped flange assembly surface is designed around its central axis hole, so the gross weight of the brake base plate is increased, which is not conducive to the light weight of the axle

Moreover, the casting brake base plate is prone to inherent defects such as cracks, pores, porosity, trachoma, slag inclusions, etc., especially trachoma, which are not easy to be eliminated by flaw detection, which makes the quality of the components hidden and affects the trouble-free working time of the axle.

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