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Traction device and method in tbm shield cavity

A technology of traction device and shield body, which is applied in the direction of hoisting device, lifting device, earthwork drilling and mining, etc., can solve the problems of narrow space in the excavation section of the tunnel, heavy components, and bulky shield head.

Active Publication Date: 2021-01-22
CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large size of the shield head, the overweight components, and the narrow space of the tunnel expansion section, it brings many great difficulties to the design and layout of the traction equipment.

Method used

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  • Traction device and method in tbm shield cavity
  • Traction device and method in tbm shield cavity
  • Traction device and method in tbm shield cavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see Figure 1-5 , the traction device in the TBM shield hole, which includes an anchor plate 11 laid at the bottom of the tunnel, two winches 10 are arranged in parallel on the top of the anchor plate 11, and the traction wire rope 5 of the hoist 10 is discharged from the hoist 10 reel, After bypassing the pulley pieces of the movable pulley block 1 and the fixed pulley block 7 for many times, the rope head passes through the balance pulley sheet 6 and connects with the steel rope anti-twist device 12 to form a traction circuit; the movable pulley block 1 and the fixed pulley block are fixed under the front shield The traction ear seat 3 at the bottom of the block 4 is connected by a short steel wire rope 2. The anchor plate 11 is fixedly installed on the concrete surface or rock surface foundation at the bottom of the tunnel through the anchor bolt 8 . By adopting the traction device in the cave with the above-mentioned structure, the two winches 10 are operated to ro...

Embodiment 2

[0037] The method for carrying out the TBM shield traction by the traction device in the TBM shield hole described in any one is characterized in that he comprises the following steps:

[0038] Step1: Drill holes at the bottom of the tunnel expansion section, bury anchor bolts 8, and install anchor plates 11;

[0039] Step2: Weld and fix the base of the winch 10 and the bottom plate of the positioning seat 20 on the anchor plate 11;

[0040] Step3: Weld the traction lugs 3 symmetrically on both sides of the bottom of the lower block 4 of the front shield;

[0041] Step4: Connect the traction lug 3 to the movable pulley block 1 through the short wire rope 2;

[0042] Step5: After the traction wire rope ends wound on the reels of the two winches 10 bypass the pulley pieces of the movable pulley block 1 and the fixed pulley block 7 for many times, pass through the balance pulley block 6 and connect with the steel rope anti-twist device 12;

[0043] Step6: Operate two winches 10...

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PUM

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Abstract

The invention provides a traction device and a method in a TBM shield body hole, which comprises an anchor plate laid at the bottom of a tunnel; two windlasses arranged parallel at the top of the anchor plate; a traction wire rope of the windlasses which is drawn from a roller of the windlass; after many times bypassing a pulley piece of a movable pulley group and a fixed pulley group, the rope head passes through a balance pulley piece and is connected with a wire rope anti-twist device to form a traction loop; the movable pulley group is connected with a traction lug fixed at the bottom of alower block of a front shield by a short wire rope. According to the traction device, the problem that drawing and walking is difficult in the tunnel because of a TBM roadheader which is large in volume and overweight in component. The traction device can be widely used in constructions of TBM excavating tunnel and the like.

Description

technical field [0001] The invention relates to the field of tunnel construction devices, in particular to a traction device and method in a tunnel of a TBM shield body. Background technique [0002] The diversion tunnel project of a water conservancy project has a total length of about 12.4 kilometers, of which 10.4 kilometers, using a full-section rock tunnel boring machine (Tunnel Boring Machinc), referred to as TBM excavation. The excavation diameter is 8.13m. After the TBM excavated the 10.4Km tunnel, the TBM roadheader should be dismantled and disassembled in the tunnel, and transported out of the tunnel. [0003] The TBM shield body is mainly composed of cutter head, front shield, inner and outer telescopic shields, support shields, finger shields and main beams and other components. The shield body is about 14m long and weighs about 680 tons. Among them, the front shield is 1780mm long and weighs about 400 tons. The supporting shield is about 3000mm long and weig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66F19/00B66D1/74B66D1/26B66D1/28E21D9/087
CPCB66D1/7405B66D1/7442B66D1/7463B66D2700/0183B66F19/00E21D9/087E21D9/0879
Inventor 张晓瑞刘伟赵志忠刘岩饶婉华禚伟黎学皓明书江刘世艳熊建武
Owner CHINA GEZHOUBA (GRP) FIRST ENG CO LTD