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Repair method of box-shaped apron wheel mechanism

A technology of a crawler mechanism and a repair method, which is applied to arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of difficult to achieve meshing relationship, difficult repair, interference with teeth, etc., so as to reduce maintenance costs and restore work performance. , the effect of good wear resistance

Inactive Publication Date: 2008-11-12
CHINA FIRST METALLURGICAL GROUP
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The actual pitch t will increase due to the wear of the earholes and pins of the track shoes, and the repair of the worn parts of the earholes and pins of the track shoes is difficult and costly. It is still difficult to achieve a good meshing relationship after repairing according to the original manufacturing size, and the phenomenon of interference and gnawing will occur.

Method used

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  • Repair method of box-shaped apron wheel mechanism
  • Repair method of box-shaped apron wheel mechanism
  • Repair method of box-shaped apron wheel mechanism

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Experimental program
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Embodiment Construction

[0028] The repair method of box crawler mechanism, it comprises the steps:

[0029] 1) Measure the actual combined average pitch t of the worn track shoes and track pins; spread the track shoes 2 on a flat ground, fix one end, and apply a force F to the other end (a chain block can be used) to eliminate the track The gap between the plate lug hole and the pin shaft; measure the center distance from the adjacent track pins of the track shoes connected together to the track pins, and calculate the average pitch, which is the actual combined pitch of the worn track shoes and track pins t; if image 3 shown;

[0030] 2) Measure the actual center height h from the worn track shoe tread to the ear hole (such as Figure 4 shown);

[0031] 3) Calculate the radius R of the contact surface on the outer edge of the driving wheel,

[0032] R = t / 2 tan ( ...

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Abstract

The invention relates to a restoration method of a box-shaped crawler mechanism, which is characterized in that the radius of the contact surface between the external edge of a new driving wheel and a crawler plate is calculated by the practical combination average pitch t of abraded crawler plate and crawler pin and the practical central height h from the pedal surface to the ear hole of the abraded crawler plate, so as to lead the restored crawler mechanism to achieve a new and good engagement motion relation; a method of high manganese steel electrode surfacing is adopted to restore the abraded positions of ladder teeth of the crawler plate; a tooth trough of the driving wheel and the external edge of the driving wheel are arranged on the contact surface of the crawler plate. The method of the invention can restore the working performance of the abraded crawler mechanism and reduce the maintenance cost.

Description

technical field [0001] The invention relates to a repair method for a box-shaped crawler mechanism. Background technique [0002] The box-shaped crawler mechanism is generally used for the walking mechanism of heavy-duty crawler cranes. It is composed of track shoes 2, track pins 3, driving wheels 1, etc. (such as figure 1 shown). Due to the harsh working conditions, it is easy to wear without lubrication. After the track shoe 2, the pin shaft 3 and the driving wheel 1 are worn out, the original good meshing relationship is changed, resulting in slippage, derailment and increased driving resistance. The overall replacement cost is high. The wear parts that affect the meshing relationship are on the track shoes such as image 3 As shown, there are wear parts 4 of the trapezoidal tooth of the track shoe, wear parts of the tread surface of the track shoe 5, and wear parts 6 of the ear holes of the track shoe; Figure 5 , Figure 6 shown); the wear parts on the driving whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B23K9/04
Inventor 董武沈德峰
Owner CHINA FIRST METALLURGICAL GROUP
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