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In-situ repairing method for crushing of supporting surface of cutter shaft of heading machine, and cutter head of heading machine

An in-situ repair and support surface technology, applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problem of long replacement process of crushed toolholders, reduce repair time and cost, ensure performance, and reduce sensitivity sexual effect

Pending Publication Date: 2021-05-28
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an in-situ repair method for the crushing of the support surface of the cutter shaft of the roadheader, so as to solve the technical problem of the long replacement process of the crushed cutter seat in the prior art; the purpose of the present invention is also to provide a roadheader cutter head

Method used

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  • In-situ repairing method for crushing of supporting surface of cutter shaft of heading machine, and cutter head of heading machine
  • In-situ repairing method for crushing of supporting surface of cutter shaft of heading machine, and cutter head of heading machine
  • In-situ repairing method for crushing of supporting surface of cutter shaft of heading machine, and cutter head of heading machine

Examples

Experimental program
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Effect test

Embodiment 1

[0045] The in-situ repair method for the crushed supporting surface of the cutter shaft of the boring machine includes the following steps:

[0046] 1. Stop the rotation of the roadheader cutter head 12 first, then remove the hob 14 from the roadheader tool holder 13, and check the damage of the cutter shaft support surface 18 on the roadheader cutter holder 13, and confirm the roadheader to be repaired. Tool holder 13;

[0047] 2. If Figure 4 As shown, clean the crushed roadheader tool holder 13 to form a gap 19;

[0048] 3. If Figure 5 As shown, firstly, the welding material with good impact resistance is selected, and the transition layer 20 is surfacing at the gap 19 by welding equipment. The transition layer 20 has good plasticity and high toughness, can absorb impact force, can effectively prevent the cracks generated by the hardened layer 21 from extending to the knife holder body 22, and can also firmly connect the knife holder body 22 and the hardened layer 21 to...

Embodiment 2

[0055] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the ultrasonic impact equipment is used to make the new cutter shaft support surface plastically deformed under pressure, so as to realize the stress relief treatment for the new cutter shaft support surface. In this embodiment, the static loading method in the existing mature technology is used to remove the stress on the support surface of the new cutter shaft. In other embodiments, the stress on the supporting surface of the new tool shaft can also be removed by using the pressing method, the hammering method and the vibration aging method.

Embodiment 3

[0057] The difference between this embodiment and embodiment 1 is that in embodiment 1, the transition layer 20 is welded at the notch 19 by surfacing welding. In this embodiment, the transition layer is a transition ply, and the transition ply is directly welded to the gap by welding equipment.

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Abstract

The invention relates to an in-situ repairing method for crushing of a supporting surface of a cutter shaft of a heading machine. The in-situ repairing method for crushing of the supporting surface of the cutter shaft of the heading machine comprises the following steps: (1) cleaning a crushed cutter holder to form a notch in the cutter holder; (2) welding a transition layer at the notch; and (3) welding a hardened layer on the transition layer, and forming a new part or whole of the supporting surface of the cutter shaft at one side, back to the transition layer, of the hardened layer. The transition layer and the hardened layer are overlaid at the notch formed in the crushed cutter holder, so that the new part or whole of the supporting surface of the cutter shaft is formed at one side, back to the transition layer, of the hardened layer, the mode of replacing the cutter holder in a hole is replaced, in-situ repairing for the cutter holder of the heading machine is realized, the use performance of the cutter holder of the heading machine is ensured, and the repairing time and cost can be greatly reduced.

Description

technical field [0001] The invention relates to an in-situ repair method for the crushed support surface of a cutter shaft of a roadheader and a cutterhead of the roadheader. Background technique [0002] During the construction process of the tunnel boring machine, it mainly relies on the support of the cutter shaft on the cutter block to provide support to the hob, and the hob squeezes the rock to achieve the effect of breaking the rock. Such as figure 1 As shown, the roadheader includes a frame 11, on which a roadheader cutter head 12 is rotatably mounted, and the roadheader cutter head 12 is welded and fixed with a roadheader knife block 13, on which the roadheader knife block 13 is rotatably equipped with a hob 14; Specifically, such as figure 2 and image 3 As shown, the boring machine tool seat 13 includes a tool seat body 22, and the tool seat body 22 has a stepped structure. One of the surfaces of the stepped structure constitutes the cutter shaft support surfac...

Claims

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Application Information

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IPC IPC(8): B23P6/00E21D9/087
CPCB23P6/00E21D9/087
Inventor 尤培龙武胜圈高翔李垚翁福娟秦利锋李军强
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD