A cantilever roadheader and its excavation method
A cantilever roadheader and cantilever technology, which is used in earth-moving drilling, mining equipment, tunnels, etc., can solve the problems of low excavation efficiency, limited excavation section, and large excavation resistance, and achieves excavation flexibility and applicability. High performance, high promotion value, and the effect of improving excavation efficiency
Active Publication Date: 2022-03-04
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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Problems solved by technology
[0003] The traditional full-face tunnel boring machine excavates through the vertical extrusion of the cutter head on the tunnel face, which results in severe tool wear and slow excavation speed
However, the existing cantilever roadheader, such as the application number 201821324346.7, is a multi-arm type cantilever roadheader equipped with a suspension cutter to break rocks, which can only be excavated by the suspension cutter, and the excavation resistance is large, and the excavation section is limited. The excavation efficiency is low, so it is necessary to develop a cantilever roadheader that can excavate any section with variable diameter and high excavation efficiency, so as to adapt to the excavation of tunnels with various sections
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] Such as figure 1 As shown, embodiment 1 is a cantilever roadheader, including a connected host structure 5 and a rear supporting system 3, and the rear supporting system 3 is connected to the rear of the host structure, including a commonly used supporting system for roadheaders. The front end of the host structure 5 is provided with a main drive 2 and a combined excavation device 1, the main drive 2 is fixed on the host structure, the combined excavati...
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The invention discloses a cantilever roadheader and an excavation method thereof, comprising a connected host structure and a supporting system, the host structure is provided with a main drive and a combined excavation device, the combined excavation device and the main drive A slag removal device is provided under the main drive, and the slag removal device is connected with the slag discharge system installed on the rear supporting system. The invention adopts the combined excavation device to excavate the excavation surface, the central cutter head of the combined excavation device carries out the extrusion of the hob to the tunnel and breaks the rock first, and the suspension cutting hob of the telescopic suspension cutting arm is The wall of the hole excavated by the central cutter head is cut and excavated at the rear, and the excavation and expansion of the tunnel are completed at one time to improve the excavation efficiency.
Description
technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a cantilever boring machine and an excavation method thereof. Background technique [0002] Rock tunnel boring machine (TBM) is a large-scale tunnel excavation equipment integrating mechanical, electronic, hydraulic, laser and other technologies. It plays an important role in the construction of mountain tunnels and urban subway projects. At present, the excavation section of this type of roadheader is basically circular. Although there are a few cases where special-shaped sections such as rectangles and horseshoes can be completed, these special-shaped sections are all used in soft soil tunnel excavation, and have not yet been seen in rock tunnel engineering. , and once the excavation section of this type of roadheader is determined, it cannot be changed again during the application process. Its excavation shape is single, the application range is limited, and it is ...
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IPC IPC(8): E21D9/10E21D9/12
CPCE21D9/1006E21D9/1086E21D9/12E21D9/124
Inventor 叶蕾贾连辉姜礼杰赵华卓普周李建斌文勇亮钱豪王一新
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD