Movable automatic feeding and concrete spraying device

Abstract

The invention discloses a movable automatic feeding and concrete spraying device. The movable automatic feeding and concrete spraying device comprises a dry concrete spraying machine, conical material bins, a feeding system and a unit frame, wherein the feeding system comprises two belt conveying mechanisms which are symmetrically arranged; each belt conveying mechanism comprises an electric roller and a conveying belt; the two conical material bins are arranged above the conveying belts correspondingly and are provided with openings in the bottoms in cooperation with the conveying belts; an elastic material bin is arranged between the two conical material bins; and the dry concrete spraying machine is arranged at the lower portions of opposite discharging ports of the two belt conveying mechanisms and fixed to the unit frame. The device is simple in structure, high in reliability and convenient to install and continue, after sprayed concrete is arranged in the material bins, manual stirring and feeding are not needed, feeding is uniform, and the additive ratio is fixed. Through actual usage, the work efficiency of the automatic concrete spraying unit is improved by 38% or above compared with an original concrete spraying machine, the springback material is reduced by 27%, and the construction work efficiency and the work environment are obviously improved.

Description

technical field [0001] The invention belongs to the field of supporting mechanical devices for underground mines, and in particular relates to a mobile automatic feeding sprayed concrete device, which is suitable for supporting work in underground mines where the working environment is complicated, the space of the working area is limited, and the sprayed concrete operation is frequent. Background technique [0002] In the excavation of tunnel engineering in underground mines, frequent shotcrete support operations are required. The original shotcrete operation mostly uses the PZ-5 type shotcrete machine. There are the following problems in the shotcrete operation process. First, the labor intensity is high, especially in the manual mixing and feeding work, the working environment is dusty, and the personnel are laborious. High strength; second, the efficiency of sprayed concrete operation is low, mainly due to the many links in the operation, and the whole process is complic...

AI Technical Summary

Problems solved by technology

The original shotcrete operation mostly uses the PZ-5 type shotcrete machine. There are the following problems in the shotcrete operation process. First, the labor intensity is high, especially in the manual mixing and feeding work, the working environment is dusty, and the personnel are laborious. High strength; second, the efficiency of sprayed concrete operation is low, mainly due to the many links in the operation, and the whole process is complicated and inefficient due to the influence of operators; third, the shotcrete machine uses manual mixing and uneven feeding, resulting in sprayed concrete Poor quality, more rebound material

Based on the above reasons, the sprayed concrete operation of the original shotcrete machine seriously affects the single-cycle production efficiency, the high-intensity labor and dusty environment of the shotcrete operation seriously affect the occupational health of employees, and the quality of shotcrete affects the overall project support quality

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