Auxiliary tool for front-and-back semitrailer tank base fixed-position welding and using method

Abstract

The invention discloses an auxiliary tool for front-and-back semitrailer tank base fixed-position welding and a using method. The auxiliary tool comprises a lifting saddle and a four-wheel saddle. The lifting saddle comprises a supporting base and a lifting mechanism and is used for adjusting the height of a front tank base during calibration. The four-wheel saddle comprises a base, wheel assemblies, stand columns and upper end cross beams and is used for supporting a rear tank base during calibration. The using method includes the steps that S01, the lifting saddle and the four-wheel saddle are manufactured; S02, level calibration is performed at the operation site of the front tank base and the rear tank base of a semitrailer; S03, the front tank base and the rear tank base are integrally hoisted in place; and S04, tank bodies and the corresponding tank bases are assembled. The auxiliary tool for front-and-back semitrailer tank base fixed-position welding and the using method have the advantages that coincidence of the central planes of the tank bodies and the central planes of the tank bases in the assembling process of the tank bodies and the tank bases is guaranteed; the degree of freedom and flexibility of the tool are high, the tool is suitable for positioning the front and rear tank bases of various dimensions, the positioning dimensions can be ensured when tires and leaf springs are assembled on a semitrailer product general assembly line, and the ex-factory pass rate of semitrailer products is increased; and the operating steps are simplified, the degree of automation is increased, working time is shortened, and production cost is reduced.

Description

technical field [0001] The invention belongs to the field of welding auxiliary tooling, in particular to an auxiliary tooling for positioning welding of front and rear half-hanging tank seats and a use method thereof. Background technique [0002] At present, the production of the front and rear tank seats of domestic and foreign semi-trailers adopts simple tooling, that is, the C-shaped groove splicing group is used on the job site to assist in the formation of a horse stool. The production of semi-trailers is to control the height difference between the front and rear tank seats by hoisting the tank seat as a whole. On simple tooling, height difference adjustment is not performed. The disadvantage is that it is directly assembled and welded with the tank body, and the finished semi-trailer often flicks front and rear (the left and right error is more than 20mm), or it is biased to one side, or the leaf spring cannot be assembled normally after flowing into the next process...

AI Technical Summary

Problems solved by technology

The disadvantage is that it is directly assembled and welded with the tank body, and the finished semi-trailer often flicks front and rear (the left and right error is more than 20mm), or it is biased to one side, or the leaf spring cannot be assembled normally after flowing into the next process. And tires, the unqualified rate is 30%-40%, the qualified rate is low, the rework workload is large, it consumes manpower, increases the labor intensity, causes a huge loss of manpower, materials and other resources, and the damage rate of simple tooling is relatively high. Frequent calibration and maintenance, large errors, even difficult to calibrate, affecting product quality

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