Tailored Welding Tooling and Technology for Sub-beam Assembly of Hook-arm Car

Abstract

The invention relates to a tailor-welding tool of a secondary beam assembly of a pull arm truck. The tailor-welding tool comprises a tool platform, oil cylinder positioning sets, hinging positioning sets, longitudinal beam positioning mechanisms and two rows of posture holding sets, wherein two hinging positioning sets are fixedly arranged at an interval at the front and back; three oil cylinder positioning sets are fixedly arranged at intervals at the front and back; the longitudinal beam positioning mechanisms are arranged at the back of the oil cylinder positioning sets; the longitudinal beam positioning mechanisms are detachable or the left position and the right position of the longitudinal positioning mechanism can be adjusted; the left position and the right position of the postureholding sets can be adjusted, and the posture holding sets are symmetrically arranged at the left and right about an axis of the tool platform. According to the tailor-welding tool of the secondary beam assembly of the pull arm truck, the secondary beams of three pull arm trucks with different model can be tailored and welded by one tool platform, so that the space occupied in a production field is reduced, and the process of charging to a boring mill can be saved; the degree of parallelism between each oil cylinder seat and the corresponding hinging seat can be ensured, the coaxiality of eachoil cylinder seat and each hinging seat is ensured, and the verticality relative to longitudinal beams is also ensured, thus the product accuracy and quality can be ensured; the difficulty in assembling is reduced; and 27,800 Yuan of the tool manufacturing cost can be saved; the tailor-welding is performed through the tool, so that the interchangeability of the secondary beam is ensured; and themaintenance work in the after-sales service can be conveniently carried out.

Description

technical field [0001] The present invention relates to the technical field of hook-arm truck assembly technology, in particular to a tailor-welding tooling and process for hook-arm truck sub-beam assembly. Background technique [0002] The sub-beam assembly is an important part of the hook-arm vehicle. Its front end is combined with a hinged seat for cooperating with the overturning bushing of the overturning frame assembly to form the first rotation axis. The hinged seat of the sub-beam assembly passes through the left and right side panels respectively Welded with the inner side wall of the longitudinal beam, so that the turning frame assembly can turn up and down around the first rotation axis during work, and the coaxiality between the hinged seat and the turning bushing of the turning frame assembly is very high Require. [0003] The rear part of the sub-beam assembly is also combined with an oil cylinder seat for positioning and installing the oil cylinder. The oil c...

AI Technical Summary

Problems solved by technology

[0005] 1. Under the condition of no tooling, relying on manual assembly and marking, the dimensional accuracy of the parts cannot be guaranteed, the assembly is difficult, and the production efficiency is low

Under the condition of no tooling, it will cause uneven force when the tilting frame assembly is turned up and down, and the driving force direction of the left and right oil cylinders will be inconsistent, making the swing arm assembly and / or the tilting frame assembly turn up and down unbalanced, thus affecting Machine operation

Moreover, the interchangeability of parts is poor, which affects subsequent use and after-sales maintenance work

[0006] 2. If the sub-beam assembly is processed by a boring machine, the outsourced processing time cannot be guaranteed, which will affect the production progress and the processing cost is high

[0007] 3. Sub-beam assembly of various models, if each product needs to be equipped with a tooling, it will take up a lot of space on the production site, and the tooling production cost is high

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