Pneumatic development machine for replacement of existing concrete conduit and replacing method therefor

A technology for roadheaders and concrete, which is applied in earth-moving drilling, tunneling, mining equipment and other directions, and can solve problems such as difficulty in operation, generation of soil, and shaking of foundation parts.

CN1865659AInactive Publication Date: 2006-11-22柏素秦
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2006-11-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an air-pressure tunneller for breaking concrete tube, which has a head and a knife disk its front. It is characterized in that: said head is a wheel head with central cut and said knife disk is a wheel knife disk with a central cut and mounted with several rotational hob cutters, while their inner diameters are larger than the outer diameter of concrete tube; the invention has one air-pressure room connected to the air compressor while its front and back parts are both mounted with air locker. The inventive improvement comprises: the back of main body is fixed with the air-pressure room and the semi-shield machine via pins; the semi-shield jack is fixed with several back new tubes via pins; the invention also contains discharge tube that extending in the concrete tube and through the main body, air-pressure room and the semi-shield machine. The invention also provides a relative method to refresh the concrete tube. With said invention, workers can enter into the tube.
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Description

technical field

[0001] The present invention relates to a pneumatic tunneling machine for updating existing concrete pipelines, and a method for updating existing concrete pipelines by using the pneumatic boring machine, in particular to a method for breaking rainwater drainage pipes or sewers buried in the ground. Concrete pipes are provided, and a pneumatic boring machine and method thereof are used for simultaneously laying new pipes. Background technique

[0002] Existing TBMs for updating existing concrete pipelines, like full-face TBMs, are equipped with rotating excavating teeth over the entire excavation section, and use a non-excavation method to break existing concrete pipelines and lay new pipelines thereafter. The updating method of the existing underground pipeline is to keep the old pipeline buried in the ground, surround the ring-shaped space formed by the original excavation of the old pipeline, and bury a new pipeline in the space. However, although the abo...

Examples

Embodiment 1

[0035] Example 1, see figure 1, the air pressure roadheader 1 used for updating the existing concrete pipeline has a roadheader main body 3, the inner diameter of the roadheader main body 3 is larger than the outer diameter of the existing concrete pipeline 2 buried in the ground, and the outer diameter of the roadheader main body 3 is roughly equal to The outside diameter of the new pipe. The inner diameter of the newly laid pipe should be able to cover the maximum center error of the existing concrete pipe 2 . The front of the roadheader main body 3 is a wheel-shaped head 4, which is rotated by a driving source. The wheel-shaped head 4 is only equipped with cutters in the necessary annular position when the existing concrete pipeline 2 is broken. The ring-shaped head 4 has a cutter head 6, the center of the cutter head 6 forms an opening 5 that can enter and exit operators, materials, operating machines and broken objects, and a free cutter head is installed at a certain d...