Bolt assembly of drive rear axle wheel of automobile and assembling method of drive rear axle wheel

Abstract

The invention provides a bolt assembly of a drive rear axle wheel of an automobile and an assembling method of the drive rear axle wheel, belongs to the technical field of manufacturing of drive axles of automobiles and mainly solves the problem that automobile bolts are broken frequently in batches in the application of EQ153 drive rear axles to engineering vehicles. The bolt assembly is mainly characterized in that the diameter of a first section of a bolt shank, at the position matching rims, of a wheel bolt is phi 30mm, the specification of corresponding threads is M20*2, and the inner end of the first section of the bolt shank is provided with a positioning step surface; the diameter of the position, matching a hub, of the wheel bolt is phi 22, and the specification of threads is M22*1.5; the bolt assembly also comprises a two-sided spherical washer. The assembling method comprises the following steps of (1) pressing one end of the wheel bolt into a bolt hole of the hub to tightly match the hub, and assembling a brake drum; (2) thrusting the inner rim to be fitted to the surface of the hub, arranging the two-sided spherical washer between the two rims, and assembling the outer rim; and (3) sequentially tightening wheel nuts diagonally. By applying the bolt assembly of the drive rear axle wheel of the automobile and the assembling method of the drive rear axle wheel, the shear resistance capacity of the wheel bolt is enhanced, installation convenience of the rim is improved, and the bolt assembly of the drive rear axle wheel of the automobile and the assembling method of the drive rear axle wheel are mainly applied to bolt assemblies of drive rear axle wheels of automobiles.

Description

technical field [0001] The invention belongs to the technical field of automobile driving rear axle manufacturing. It specifically relates to an improved structure of wheel bolts and nuts and an assembly method with wheel rims to reduce the problem of wheel bolt breakage of the EQ153 driven rear axle and improve the reliability of the EQ153 driven axle. Background technique [0002] With the development of the national economy and the start of construction of mines, ports and large-scale civil works, the demand for construction vehicles is increasing, and the frequency of use of vehicles is also quite high. Many vehicles are driven by multiple drivers in turn, and people park Non-stop, it is a considerable test for the overall vehicle performance of the vehicle. In the above-mentioned vehicle environment, vehicles mostly operate on non-paved roads, under high load and high strength. In the case of heavy load, frequently passing through uneven roads is the most direct test ...

AI Technical Summary

Problems solved by technology

As the mainstream model of engineering vehicles, the EQ153 driving rear axle of Dongfeng Company is a mature model imported from Japan, and has always had a high share in the quasi-heavy-duty market in the domestic market. The EQ153 driving rear axle is equipped with double rims, and the wheel nuts adopt double nut spherical positioning. Type, since EQ153 has been used in large quantities on engineering vehicles, the market has reported that the accidents of rear wheel bolt breakage have been increasing, which has seriously affected the performance of the vehicle

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