Nondestructive technology for disassembling landing leg pin shaft in concrete pump truck remanufacturing process

Abstract

The invention relates to the filed of concrete pump truck manufacturing, in particular to a nondestructive technology for disassembling a landing leg pin shaft in the concrete pump truck remanufacturing process. The technology comprises the following steps that (1) drilling is conducted on the middle of a shaft sleeve with a copper sleeve; (2) a positioning pin is inserted into a hole, and the shaft sleeve and the landing leg pin shaft which relatively move originally are locked; (3) a landing led is swung, the landing leg pin shaft and the corrosion portion, without the copper sleeve, of the shaft sleeve are loosened; (4) the positioning pin is taken out; (5) the landing leg pin shaft is taken out. The nondestructive technology for disassembling the landing leg pin shaft in the concrete pump truck remanufacturing process is easy to carry out, gives a new life cycle of the landing pin shaft and a new life cycle of the shaft sleeve, improves landing leg pin shaft disassembling production efficiency by 70% and solves production bottleneck problems.

Description

technical field [0001] The invention relates to the field of concrete pump truck manufacture, in particular to a non-destructive disassembly process for remanufacturing concrete pump truck outrigger pins. Background technique [0002] During the long-term service of concrete pump trucks, the relatively non-rotating parts of the outrigger pins and bushings tend to corrode and stick together, so that the corroded outrigger pins cannot be completely removed during the remanufacturing process of the pump truck . At present, in the process of remanufacturing pump trucks, the method of dismantling the turret and the outriggers after cutting off the pin shafts and bushings of the outriggers is often used for dismantling. This method is a destructive dismantling method. The outrigger pins and bushings need to be reprocessed. After the bushings and outriggers are assembled and welded, marking and boring are required, which not only increases the material cost and processing cost, b...

AI Technical Summary

Problems solved by technology

[0002] During the long-term service of the concrete pump truck, the relatively non-rotating parts of the outrigger pin shaft and the bushing are easy to corrode and stick together, resulting in During the manufacturing process, the corroded outrigger pins could not be completely removed

At present, in the process of remanufacturing pump trucks, the method of dismantling the turret and the outriggers after cutting off the pin shafts and bushings of the outriggers is often used for dismantling. This method is a destructive dismantling method. The outrigger pins and bushings need to be reprocessed. After the bushings and outriggers are assembled and welded, marking and boring are required, which not only increases the cost of materials and processing, but also prolongs the production cycle.

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