A retractable side hob cutter box

A telescopic and knife box technology, which is applied in mining equipment, tunnels, earthwork drilling, etc., can solve the problems of tool box jamming, poor practicability, and complex structure

Active Publication Date: 2019-02-22
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But both structures have fatal shortcomings: the first structure can only meet the expansion of 50mm (radius direction); although the second structure can meet the expansion of 150mm (radius direction), in actual use, the structure is too large. Complicated, often stuck when moving the tool box, so the practicability is poor

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  • A retractable side hob cutter box
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  • A retractable side hob cutter box

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Such as figure 1 As shown, in actual construction, the tunnel face is made of rock, so it is unstable. Rock blocks often fall from a height. If someone works on the tunnel face, there will be a high risk. Changing the hob and adjusting the height of the hob are all carried out inside the cutter head, which is called a back-mounted knife.

[0023] The invention patent with application number 201310689220.5 mainly includes two methods...

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Abstract

Disclosed is a telescopic gage disc cutter box. The cutter box can meet the large-diameter expanding excavation requirements of a TBM cutter head to deal with engineering geology with large buried depths and high rock convergence. The telescopic gage disc cutter box comprises the disc cutter (3), an inner cutter box (1), an outer cutter box (2) and a C-shaped block (4). A bolt hole is designed between the inner cutter box (1) and the outer cutter box (2). The inner and outer cutter boxes (1, 2) are connected by using a third bolt (12). A wedge-shaped block (5) and the C-shaped block (4) are mounted in the inner cutter box (1), and the two are used for fixing a disc cutter shaft; the wedge-shaped block (5) is connected to a tensioning block (6) via a first bolt (9), and the tensioning block (6) is mounted at a lower part of the outer cutter box (2); and the C-shaped block (4) is connected to the inner and outer cutter boxes (1, 2) through second bolts (13). By means of the relative movement of the inner cutter box and the outer cutter box, combined with the height increase of the C-shaped block, the cutter box realizes the large-diameter expanding excavation of the cutter head. The cutter box is reliable in structure, high in practicality and capable of meeting the extremely bad working conditions of tunnel faces.

Description

Technical field [0001] The invention belongs to the field of excavation equipment during tunnel construction, and particularly relates to a side hob cutter box capable of realizing the large-diameter expansion and excavation requirements of a TBM cutter head. Background technique [0002] Under special geological conditions, TBM needs to expand the excavation diameter to solve the jam caused by rock convergence and collapse. The traditional cutter head is divided into two expansion methods: ① By thickening the C-shaped block in the cutter head, the diameter of the excavation is enlarged; ② By moving the tool box (movable tool box), in the reserved tool box The hob is installed on the upper part to form a new excavation track and increase the excavation diameter. However, both structures have fatal shortcomings: the first structure can only meet the expansion volume of 50mm (radius direction); the second structure can meet the expansion volume of 150mm (radius direction), but in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08
CPCE21D9/08
Inventor 高翔张世展翟国强杨添任齐志冲
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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