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Tunneling machine and overbreak knife thereof

A technology of super-excavation cutter and roadheader, which is applied to mining equipment, earthwork drilling, tunnels, etc., can solve the problems of low construction efficiency, influence on construction progress, and high operation risk, so as to improve construction safety, reduce construction cost, The effect of improving replacement efficiency

Pending Publication Date: 2018-11-16
CHINA RAILWAY CONSTR HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of operation requires the cooperation of various types of work such as manual excavation and welding in the hole. The operation process is cumbersome and dangerous, and the construction efficiency is low, which seriously affects the construction progress.

Method used

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  • Tunneling machine and overbreak knife thereof
  • Tunneling machine and overbreak knife thereof
  • Tunneling machine and overbreak knife thereof

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Embodiment Construction

[0023] The purpose of the present invention is to provide a super digging cutter for a roadheader. There is a mounting port on the side of the cutter head, and each component can be disassembled and replaced through the mounting port, which not only meets the function of super digging, but also realizes safety and convenience in limited and harsh environments. replace. Another object of the present invention is to provide a roadheader comprising the above-mentioned super digging cutter.

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Please refer to Figure 1 to Figure 4 , figure 1 It is a schematic front view of a specific embodiment of the super digging knife provided by the present invention; figure 2 A cross-sectional view of a specific embodiment of the super di...

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PUM

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Abstract

The invention discloses an overbreak knife of a tunneling machine. The overbreak knife of the tunneling machine includes a hollow cutter and a guide rail sleeve, wherein the guide rail sleeve is installed in the cutter and both ends are open. The outer end of the guide rail sleeve stretches out the outer end of the cutter, a knife seat is coaxially arranged in the guide rail sleeve, and the knifeseat can extend and retract in the extension direction of the guide rail sleeve. A cutting tool is detachably installed at the outer end of the knife seat, and a cylinder barrel is installed in the guide sleeve. Protruded pistons are arranged on the periphery of the middle of the knife seat, and the pistons are contacted with the inner wall of the cylinder barrel in a sealing mode. Oil openings for hydraulic oil in and out are formed in the two ends of the cylinder barrels, and an installation opening for the cutting tool in and out is formed in the side surface of the cutter. The cutting toolis taken out from the back side of the cutter without the need for cutting a grotto from the side surface of the overbreak knife. The replacement of the overbreak knife can be quickly realized, the replacement efficiency of the overbreak knife is improved, the construction cost is reduced, and the construction safety is improved. The invention further discloses a tunneling machine including the overbreak knife.

Description

technical field [0001] The invention relates to the field of excavation equipment, in particular to a super excavation knife of an excavation machine. In addition, the present invention also relates to a boring machine comprising the above-mentioned super digging cutter. Background technique [0002] The roadheader is the main tool used in today's underground tunnel engineering, and has been widely used in infrastructure projects such as urban subways, water conservancy and hydropower, railways, and highways. Usually, the roadheader needs to use the over-excavation cutter to radially expand the tunnel when turning, correcting the deviation or before replacing the outermost hob. It can be seen that the super digging knife is one of the important tools equipped with the compound cutter head. Once the over-excavation knife is severely worn or damaged, it will have a great impact on the expansion capacity and construction efficiency of the roadheader. [0003] When replacing ...

Claims

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Application Information

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IPC IPC(8): E21D9/10
CPCE21D9/10
Inventor 刘飞香程永亮暨智勇阳旭柯威邓汝群罗丹
Owner CHINA RAILWAY CONSTR HEAVY IND
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