Combined balance shield machine

A shield machine, composite technology, applied in mining equipment, earthwork drilling, tunnels, etc., can solve problems such as unsuitability, and achieve the effect of improving flow plastic performance

Active Publication Date: 2009-07-29
SHANGHAI FOUND ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But when the permeability coefficient is greater than 10 -2 The mud-water balance shield machine and the earth pressure balance shield machine are not suitable for cm / s eggs, gravel layers or large obstacles

Method used

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  • Combined balance shield machine
  • Combined balance shield machine
  • Combined balance shield machine

Examples

Experimental program
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Embodiment Construction

[0022] Such as figure 1 , 2 As shown, the compound balanced shield machine of the present invention includes a shield shell 1 , and the front end of the shield shell 1 is a cutter head 2 . A tearing knife 21 and a cutting knife 22 are arranged on the cutter head 2 at the same time, wherein the cutting edge of the cutting knife 22 is slightly behind the tearing knife 21 . The tearing knife 21 is mainly aimed at unweathered block stones, such as unweathered tuff, by extruding and self-rolling, to break relatively hard block stones. Run into soft soil layer, tearing knife 21 loses its effect, this moment relies on cutting knife 22, under the rotation of cutterhead 2, cuts soft soil. The actual shield tunneling process is a combination of these two knives.

[0023] see figure 1 and image 3 , the cutter head 2 rear portion is the soil bin 3, and the soil bin 3 bottom is provided with an excavation opening 31, and the soil cut by the cutter head 2 enters the soil bin 3. The b...

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Abstract

The composite balanced tunnel shield machine includes machine shell, capstan in the front of the machine shell, earth bin on the back of the capstan, screw conveyer for conveying cut earth and driving oil cylinders distributed homogeneously around the machine shell. It features the capstan with both tearing tools and cutting tools; the earth bin with several slurry injecting holes in the back wall; and pneumatic balancer installed in the back part of the earth bin. The screw conveyer is provided with two gates including the first hydraulic gate and the second manual gate; and 26 driving oil cylinders are distributed homogeneously around the machine shell. There are in the shield machine tail three tail sealing steel wire brushes with tail grease in between and the last brush capable of being replaced. Or, the shield machine tail may be water stopping sealed with polyurethane or other material and the last brush may replaced with type-Y sealing rubber brush for stopping water.

Description

technical field [0001] The invention relates to a shield machine, in particular to a compound balanced shield machine. Background technique [0002] When using the shield tunneling method for construction, it is generally necessary to consider the geological conditions, the outer diameter of the shield, the length of the tunnel, the construction procedure, the labor situation, etc., to select the shield machine. Choose the type of shield machine according to the geological conditions. For sandy soil with poor self-supporting performance, you should use sealed shield construction as much as possible. If it is sandy soil with rich groundwater and good water permeability, muddy water should be given priority. Balance shield machine; for cohesive soil, the earth pressure balance shield machine can be considered first. But when the permeability coefficient is greater than 10 -2 The mud-water balance shield machine and the earth pressure balance shield machine are not suitable f...

Claims

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Application Information

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IPC IPC(8): E21D9/00
Inventor 徐其宝姜春辉付才王涛
Owner SHANGHAI FOUND ENG GRP
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