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

A concrete pump truck and remanufacturing technology, which is applied in the fields of motor vehicle and vehicle scrap recycling, solid waste removal, etc., to avoid damage, solve production bottleneck problems, and improve dismantling production efficiency.

Active Publication Date: 2014-01-01
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0019] see figure 1 , 2 , 3. The specific process steps of the present invention are: apply enough rust remover to the rusted part of the outrigger pin and the bushing and soak; swing the outrigger at a certain angle, drill a hole in the middle of the bushing with a copper sleeve, and drill to the pin The depth of the hole on the shaft is 20-40 mm, and insert the positioning pin in the hole to lock the original rotating shaft sleeve and the outrigger pin; slowly swing the outrigger left and right to make the rusted part of the outrigger pin and the shaft sleeve Relatively rotate; continue to add rust remover to the rusted part of the outrigger pin and the bushing, increase the swing range of the outrigger, so that the relative rotation of the outrigger pin and the bushing is flexible; take out the positioning pin, and use a jack to push out Outrigger pins.

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D67/00
CPCY02W30/56
Inventor 太平岳文辉翁建鑫伍济钢朱永星段鹏辉
Owner HUNAN UNIV OF SCI & TECH
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