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High-pressure air multi-tube concrete spraying device

A technology of concrete spraying and high-pressure air, which is applied to shaft equipment, earth-moving drilling, wellbore lining, etc., can solve the problems of detachment from surrounding rock, concrete rebound and splashing, etc., and achieve the effect of improving efficiency, low cost and simple structure.

Pending Publication Date: 2019-03-29
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-pressure air multi-pipe concrete spraying device for the ubiquitous problems of concrete rebound splashing and breaking away from surrounding rocks in the existing concrete spraying technology, thereby greatly reducing the rebound splashing of concrete and improving Construction efficiency, reduce project cost

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  • High-pressure air multi-tube concrete spraying device
  • High-pressure air multi-tube concrete spraying device
  • High-pressure air multi-tube concrete spraying device

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Embodiment Construction

[0028] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with examples, and the following examples are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0029] combined with figure 1 As shown, a high-pressure air multi-tube concrete injection device related to the present invention includes a concrete injection device and a high-pressure air injection device.

[0030] combined with figure 1 with 2 As shown, the high-pressure air injection device includes a nozzle fixing ring 1 , an end plate 3 and an air nozzle 7 . The structure of end plate 3 is as attached image 3 As shown, the end plate 3 is an annular plate made of steel plate, and its thickness is determined according to calculation. The center of the end plate 3 is provided with a concrete spray gun insertion hole 4, and the surroundings of the concrete spray gun insertion hole 4 are...

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Abstract

The invention relates to a high-pressure air multi-tube concrete spraying device. The high-pressure air multi-tube concrete spraying device is characterized by comprising a concrete spraying device body and a high-pressure air ejecting device; the high-pressure air ejecting device comprises a nozzle fixing ring, an end plate and a plurality of air nozzles, the center of the end plate is provided with a concrete spraying gun insertion hole, the periphery of the concrete spraying gun insertion hole is provided with air nozzle mounting holes corresponding to the air nozzles one to one, the nozzlefixing ring is fixed at the concrete spraying gun insertion hole in the end plate, the air nozzles run through the air nozzle mounting holes and are fixed on the end plate; the concrete spraying device body comprises a concrete spraying gun, the concrete spraying gun runs through the nozzle fixing ring and the concrete spraying gun insertion hole and is fixed with the nozzle fixing ring. The high-pressure air multi-tube concrete spraying device has the advantages that the rebound of concrete can be blocked, the material waste is avoided, and the concrete adhered on surrounding rock can be smoothed, squeezed and vibrated, so that the concrete is more firmly in contact with the surrounding rock, and cavities and gaps cannot occur in the concrete.

Description

technical field [0001] The invention relates to the field of primary lining construction of tunnel surrounding rocks, in particular to a high-pressure air multi-pipe concrete injection device. Background technique [0002] In the tunnel lining construction process, high-pressure pump trucks are generally used to spray concrete onto the surface of the tunnel surrounding rock as the primary lining, such as the pulse concrete spraying machine with the application number CN201710467538.7, which includes a base, universal wheels, and a concrete warehouse , spray pipe and nozzle; the middle part of the lower surface of the base is fixedly connected with a steering motor, the top of the rotating shaft is fixedly connected with a turntable, the upper surface of the turntable is fixedly connected with a bracket, the lower surface of the spray pipe is hinged with a telescopic mechanism, and the lower surface of the turntable is fixedly connected There is a concrete silo, the interior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
CPCE21D11/10E21D11/105
Inventor 文献民杨建辉曹宇春姜鲁珍张云莲
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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