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Tunnel boring machine cutterheads for complex hard rock geology

A technology for tunneling and hard rock, which is applied in the field of tunnel boring machine cutterheads, which can solve the problems of high maintenance and manufacturing costs, difficult welding of cutterheads, and high failure rate, and achieve the effects of reducing labor intensity, improving rock breaking efficiency, and small disturbance

Active Publication Date: 2018-05-04
中船(青岛)轨道交通装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing excavation cutters have a complex structure, and it is necessary to reserve an installation position when designing the cutter head structure. It is difficult to weld the cutter head (complex structure), and it is generally driven by a hydraulic cylinder. It must be equipped with an independent hydraulic pipeline system and electronic Detection line system (sensor), high failure rate, high maintenance and manufacturing costs

Method used

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  • Tunnel boring machine cutterheads for complex hard rock geology
  • Tunnel boring machine cutterheads for complex hard rock geology
  • Tunnel boring machine cutterheads for complex hard rock geology

Examples

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Embodiment Construction

[0027] like figure 1 As shown, the center hob and the front hob of the TBM cutterhead are arranged in the same diameter structure, and are equipped with a center hob 7, a front hob 6, a side knife 3, a gage knife 2, a shovel knife 5, a manhole 1, and a water spray Mouth and so on.

[0028] like figure 2 As shown, the center hob box 70 (including double-edged hobs and four-edged hobs) of the new cutter head of the present invention is redesigned and improved to one to two smaller cutter numbers, and the number of smaller grades depends on the specific situation. Depending on geological conditions; Gauge cutter box 9 can be designed with a larger cutter number. If the diameter of the center hob 7 of the original cutter head design is consistent with other cutters, the center hob 7 is limited by the bearing capacity and the double-connected quadruple structure of the center cutter, so the distance between the bearings cannot be reduced, and the distance between the cutters ca...

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Abstract

A tunnel boring machine cutter head suitable for complex hard rock geology, including manholes, gauge cutters, side cutters, scrapers, shovel blades, positive hob, center hob and water spray nozzles, and an array is arranged in the center of the cutter head The center hob is provided with an array of positive hob on the periphery of the center hob, and an array of gauge knives, edge knives, scrapers and shovels uniformly distributed along the outer periphery of the cutter head on the periphery of the positive hob; There are also manholes on the periphery, and several water nozzles are arranged around the cutter head. The center hob adopts a small-spacing cutter; the diameter-keeping cutter adopts a cutter box structure in which large and small knives are interchanged; and the side cutter raises its cutter shaft when excavating. The advantages of the invention are that the center cutter of the cutter head can realize the spacing between small cutters, improve the rock breaking efficiency of the center cutter, reduce the labor intensity of construction personnel, speed up the construction progress and save the construction cost.

Description

technical field [0001] The invention relates to a tunnel boring machine cutter head suitable for complex hard rock geology, mainly used for. Background technique [0002] Full-face rock tunnel boring machine (tunnel boring machine, TBM) is a special construction machine for tunnels, widely used in subway, railway, highway, municipal, hydropower tunnel projects. The cutterhead is the key component of the TBM, which has functions such as excavation, stabilizing the tunnel face, and mixing muck. The design of the cutterhead plays an important role in improving the rock-breaking ability and tunneling efficiency of TBM and reducing the excavation cost, and is the decisive factor affecting the tunneling performance of TBM. Cutterhead design technology is the key technology of roadheader design. Therefore, it is of great strategic significance to improve independent innovation design and manufacturing capabilities. The main content of TBM cutterhead design includes tool selection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/11
CPCE21D9/112
Inventor 郭志王以栋王小强樊治国朱厚军陈凡
Owner 中船(青岛)轨道交通装备有限公司
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