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An anti-swelling and cracking safety protection device for the conveying pipe of a concrete wet spraying machine

A technology of safety protection device and wet spraying machine, applied in pipeline protection, safety valve, valve device and other directions, can solve problems affecting the development and promotion of pumping construction, reduce failure points, improve stability and reliability, The effect of simplifying the structure

Active Publication Date: 2016-01-20
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its frequent occurrence and difficulty in control, it affects the development and promotion of pumping construction

Method used

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  • An anti-swelling and cracking safety protection device for the conveying pipe of a concrete wet spraying machine

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, the concrete wet spraying machine conveying pipe anti-expansion cracking safety protection device of the present invention is installed between the wet spraying machine and the conveying pipe, and it includes a connecting pipe 6 with flanges at both ends and a hydraulic cylinder 8;

[0027] A through hole is opened in the upper position of the connecting pipe wall;

[0028] The pipe wall of the connecting pipe extends upward along the wall of the through hole to form a connecting nozzle with an open top. The hydraulic cylinder body is welded on the nozzle. The inner diameter of the nozzle is equal to the inner diameter of the hydraulic cylinder body. The inner wall is on the extension line of the inner wall of the nozzle;

[0029] A discharge hole 7 is provided on one side of the hydraulic cylinder body;

[0030] The top of the cy...

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Abstract

The invention discloses an anti-expansion crack protecting device of a concrete wet spraying machine conveying pipe. The device is arranged between a wet spraying machine and a conveying pipe and comprises a connecting pipe and a hydraulic cylinder, wherein a flange is arranged at each of the two ends of the connecting pipe; a through hole is formed in the upside position of the pipe wall of the connecting pipe; a pipe opening of which the top is opened is formed along the wall surface of the through hole in an upwards extending way; the body of the hydraulic cylinder is welded to the pipe opening; the inner wall of the hydraulic cylinder body is on the extending line of the inner side wall of the pipe opening; an unloading hole is formed in one side of the hydraulic cylinder body; a flange surface is arranged at the top of the hydraulic cylinder body; a top cover is also arranged on the flange surface; a hydraulic oil filling hole is formed in the top cover and is communicated with an outside hydraulic station through a hydraulic oil pipe; the working direction of a piston rod of the hydraulic cylinder is downward; the rated pressure-withstanding value of the conveying pipe is greater than or equal to the pressure of hydraulic oil during work of the hydraulic cylinder. The device is of a purely mechanical structure, and is simple in structure, stable in running, safe, reliable, low in workload of maintenance, and low in cost.

Description

technical field [0001] The invention relates to an anti-expansion safety protection device for a delivery pipe, in particular to an anti-expansion safety protection device for a delivery pipe of a concrete wet spraying machine. Background technique [0002] Shotcrete is the use of spraying machinery, compressed air or other power to transport the mixture in a certain proportion through pipelines and spray it to the sprayed surface at high speed, relying on the continuous impact and compaction of cement and aggregate during the spraying process. , a concrete that solidifies and hardens to strengthen and protect the sprayed surface. Compared with ordinary concrete, sprayed concrete has many characteristics in terms of construction technology, materials and structure. Compared with ordinary concrete, such as fast construction speed, simple process, and low cost; It is flexible and can be operated in any direction at high altitudes, deep pits or narrow working areas; its advant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L57/02F16L55/07F16K17/164E21D11/10
CPCE21D11/10F16K17/164F16L55/07F16L57/02
Inventor 陈连军程卫民刘国明周刚潘刚曹森
Owner SHANDONG UNIV OF SCI & TECH
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