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Boom roadheader and construction method thereof

A technology of cantilever roadheader and roadheader, which is applied in earthwork drilling, mining equipment, tunnels, etc., can solve the problem that the cantilever roadheader cannot change the diameter of excavation, and achieve high excavation flexibility and applicability, and high promotion value , Improve the effect of excavation efficiency

Active Publication Date: 2020-12-04
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a cantilever roadheader and its construction method, which solves the problem that the cantilever roadheader in the prior art cannot excavate with variable diameters

Method used

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  • Boom roadheader and construction method thereof
  • Boom roadheader and construction method thereof
  • Boom roadheader and construction method thereof

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Experimental program
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Effect test

Embodiment 4

[0042] Embodiment 4: as Figure 6 , 7 Shown, a kind of construction method of cantilever boring machine as described in embodiment 3, the steps are as follows:

[0043] S1: Adjust the position of the cantilever roadheader so that the cantilever roadheader is at an appropriate distance from the tunnel face, and fully shrink the telescopic cantilever arm 106 of the expanding and cutting device 1 to the rear of the central cutter head 102; The diameter of the telescopic cantilever arm is not greater than the maximum diameter of the central cutter head,

[0044] S2: The telescopic control cylinder 606 drives the telescopic arm 605 and the expanding and cutting device 1 to excavate along the face until the central cutter head 102 of the expanding and cutting device 1 is completely excavated into the face; that is, the main drive 2 passes through the support The disk 107 drives the combined excavation device 1 to excavate along the excavation surface, and the central cutterhead 10...

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Abstract

The invention discloses a boom roadheader and a construction method thereof. The problem that in the prior art, a boom roadheader cannot carry out variable-diameter excavation is solved. The boom roadheader comprises a roadheader body, wherein a multi-degree-of-freedom boom and a slag removal mechanism are arranged on the front portion of the roadheader body, the multi-degree-of-freedom boom is located above the slag removal mechanism, and an expanding excavation cutting device is arranged on the front portion of the multi-degree-of-freedom boom. The multi-degree-of-freedom boom of the boom roadheader is matched with the expanding excavation cutting device to carry out multi-degree-of-freedom flexible excavation on an excavation face, and the excavation position and the excavation angle are convenient to adjust, so that the excavation precision is guaranteed; and a center cutter head of the expanding excavation cutting device carries out hob extrusion rock breaking advanced excavationon the excavation face, a suspension cutting hob of a telescopic suspension cutting arm carries out later suspension cutting excavation on a tunnel wall excavated by the center cutter head, and excavation and expanding excavation of the tunnel are completed at a time, so that the excavation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of roadheaders, in particular to a cantilever roadheader and a construction method thereof. Background technique [0002] The cantilever roadheader is a large-scale tunnel excavation equipment, which plays an important role in the construction of mountain tunnels and urban subway projects. When the existing cantilever roadheader excavates, the cantilever excavation structure is close to the tunnel face, and the cantilever swings left and right, up and down, and cuts rocks sequentially from one side to the other, so the excavation efficiency is relatively low. And the existing roadheader, such as a compound cantilever roadheader with the application number CN201220295118.8, is mainly used for excavation of a certain cross-section in hard rock formations. The excavation area cannot be adjusted, and the applicability is not good, which affects the excavation efficiency. Contents of the invention [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10E21D9/12
CPCE21D9/10E21D9/1006E21D9/1086E21D9/1093E21D9/12
Inventor 杨航贾连辉姜礼杰王一新原晓伟钱豪文勇亮
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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