A dismantling process for deformed pin shaft of remanufactured concrete pump truck

A concrete pump truck and remanufacturing technology, applied in the direction of manufacturing tools, vehicle parts, metal processing, etc., can solve the problems of increasing processing cost, prolonging production cycle, increasing remanufacturing cost, etc., improving production efficiency, solving production bottlenecks, The effect of reducing manufacturing costs

Active Publication Date: 2016-03-23
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the deformed pin is disassembled, the shaft sleeve and the component body are damaged, the reuse value of the shaft sleeve and the component body is lost, the reuse rate of parts is reduced, and the remanufacturing cost is increased
The main body of the damaged component during disassembly needs to be reassembled and welded, and the bush hole needs to be reprocessed after welding, thus prolonging the production cycle and increasing the processing cost

Method used

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  • A dismantling process for deformed pin shaft of remanufactured concrete pump truck
  • A dismantling process for deformed pin shaft of remanufactured concrete pump truck
  • A dismantling process for deformed pin shaft of remanufactured concrete pump truck

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 2 , image 3 , Figure 4 As shown, before dismantling, drill a blind hole 3 at the axial center of the pin shaft 2. The diameter of the drill hole is 3mm smaller than the diameter of the pin shaft 2, so that the wall thickness of the pin shaft after drilling is 1.5mm, and the hole depth of the blind hole 3 is smaller than that of the pin shaft. 2 The length is 10mm. When the pin shaft 2 has a large diameter, it can be drilled and then bored, so that the processed pin shaft wall has a softer elastic structure; then the deformed pin is removed by knocking the pin shaft wall through the auxiliary support 4 and hammer 5 Axis 2.

[0025] Drill the blind hole 3 to disassemble the deformed pin shaft, so that the pin shaft 2 can be processed into a thin-walled structure, and the rigidity of the pin shaft 2 can be reduced. The dislocation part is easy to sag, so as to achieve the purpose of disassembly.

Embodiment 2

[0027] Such as Figure 6 , Figure 7 , Figure 8 As shown, a through hole 6 is drilled at the axial center of the deformed pin shaft 2. The diameter of the drilled hole is smaller than the diameter of the pin shaft 2 by 4 mm, so that the wall thickness of the pin shaft after drilling is 2 mm. Disassemble pin shaft 2.

[0028] The invention realizes the reuse value of the shaft sleeve without damaging the shaft sleeve and the main body of the component, effectively reduces the remanufacturing cost, and does not need to reassemble the shaft sleeve, mark the line, process the shaft sleeve hole and other processes, and solves the problem of Production bottlenecks have increased production efficiency by more than 20%.

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Abstract

The invention discloses a disassembly technology for remanufacturing a deformation hinge pin of a concrete pump truck. The disassembly technology comprises the following steps that (1) a hole is drilled in the axial center position of the deformation hinge pin and the diameter of the drilled hole is smaller than that of the hinge pin; (2) the method that a jack or a hammer is used for knocking the hinge pin wall after the hole is drilled is adopted, so that the deformation hinge pin is disassembled. When the diameter of the hinge pin is large, the hole is bored after being drilled, so that the hinge pin wall has a soft elastic structure after the hole is drilled. Under the condition that a shaft sleeve and a component body are not damaged, the reuse value of the shaft sleeve is achieved, the remanufacturing cost is effectively reduced, the procedures that the shaft sleeve is installed and welded again, a line is drawn, a shaft sleeve hole is machined are not needed, the production bottleneck is overcome, and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of concrete pump trucks, in particular to a dismantling process for remanufacturing a deformed pin shaft of a concrete pump truck. Background technique [0002] When the decommissioned concrete pump truck was remanufactured, it was found that part of the pin shaft had been deformed, resulting in misalignment and misalignment between the shaft and the bushing. figure 1 , attached figure 2 as shown, figure 1 including bushing 1 and pin 2, figure 2 Dislocation deformation at the mid-section (point G). When the pump truck is remanufactured, the deformed pin shaft is difficult to remove, and the shaft and bushing must be cut off together to disassemble. When the deformed pin is disassembled, the shaft sleeve and the component body are damaged, the reuse value of the shaft sleeve and the component body is lost, the reuse rate of parts is reduced, and the remanufacturing cost is increased. The main body of the compone...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P11/00
CPCB23P11/00B23P2700/50
Inventor 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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