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A cantilever boring machine and its construction method

A technology of cantilever roadheader and roadheader, which is applied in earthwork drilling, mining equipment, tunnels, etc. It 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 , Guarantee the effect of excavation accuracy

Active Publication Date: 2022-03-04
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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  • A cantilever boring machine and its construction method
  • A cantilever boring machine and its construction method
  • A cantilever boring machine and its construction method

Examples

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Embodiment 4

[0042] Embodiment 4: as Image 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 102...

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Abstract

The invention discloses a cantilever roadheader and a construction method thereof, which solves the problem in the prior art that the cantilever roadheader cannot excavate with variable diameters. The invention comprises a roadheader body, the front part of the roadheader body is provided with a multi-degree-of-freedom cantilever and a slag-clearing mechanism, the multi-degree-of-freedom cantilever is located above the slag-clearing mechanism, and the front part of the multi-degree-of-freedom cantilever is provided with an expanding and cutting device. The multi-degree-of-freedom cantilever of the cantilever roadheader of the present invention cooperates with the expanding and cutting device to perform multi-degree-of-freedom flexible excavation on the excavation surface, the excavation position and the excavation angle are easy to adjust, and the excavation accuracy is ensured. The central cutter head of the expansion and cutting device performs the extrusion of the hob on the excavation surface to break the rock and excavates first, and the hanging cutting hob of the telescopic suspension cutting arm carries out the rear suspension cutting on the wall excavated by the central cutter head. Excavation, complete the excavation and expansion of the tunnel, and improve the excavation efficiency.

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 Patents(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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