Cab stabilizer bar and assembly process thereof

Abstract

The invention discloses a cab stabilizer bar and an assembly process thereof. The stabilizer bar comprises a hollow pipe body, a left swing arm and a right swing arm, the hollow pipe body is an alloysteel pipe, the left swing arm and the right swing arm are foundry goods of steels or aluminum alloys, the two ends of the hollow pipe body are subjected to upsetting processing and then welded synchronously with the left swing arm and the right swing arm by magnetic arc welding, after welding, a welding zone is locally heated to eliminate the welding stress, the length difference of the hollow pipe body, the left swing arm and the right swing arm is controlled within +-0.5 mm, and the coaxiality of a connection hole connected with the left swing arm and the right swing arm with an inner holeof the hollow pipe body is within phi0.4 mm. The cab stabilizer bar has a weight reduction of 30%-50% compared with a conventional solid stabilizer bar, which reduces the manufacturing cost, and the dimensional accuracy, the welding efficiency and the welding quality stability are significantly improved compared with conventional arc welding.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing technology, in particular to a cab stabilizer bar and its assembly technology. Background technique [0002] The main function of the front suspension of the cab is to improve the impact resistance and handling stability of the cab. Most of them adopt the stabilizer bar structure, that is, the middle is a solid bar, and the rocker arms at both ends are steel forgings, which are heavy in weight and high in cost. With the development of lightweight automobiles, the development trend of the front suspension is to use hollow structures instead of solid structures, use castings instead of forged parts, and adopt new assembly and connection processes to ensure product quality and production efficiency while reducing weight. . [0003] At present, the assembly of hollow cab stabilizer bars on the market generally adopts bolt connection, arc welding, and friction welding. The characteristics of t...

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Problems solved by technology

The characteristics of these three connection processes are: the bolt connection is mainly used to achieve the convenience of installation, but the bolt connection has problems such as poor corrosion resistance, easy loosening and low connection strength; arc welding has wide applicability and flexible operation, but welding fume Larger, and the welding stability is affected by environmental conditions. The stability is poor, and in order to ensure the welding strength, the socket welding structure is generally used, and the weight reduction effect is poor. In addition, the welding performance of the cast material is poor; friction welding can weld different materials. The welding strength can be better than that of the main body. However, due to the large size of the left and right swing arms of the cab stabilizer bar, it is not easy to clamp and rotate, and the requirements for equipment control are too high

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