Grouting ejection device for coal mine tunnel

Abstract

The invention discloses a grouting ejection device for a coal mine tunnel and belongs to the technical field of mortar ejection equipment. The grouting ejection device for the coal mine tunnel comprises a vehicle body, a mortar uniform-crushing mechanism, a stirring box, an ejected mortar conveying mechanism and a mortar ejection mechanism. Four travelling wheels distributed in matrix are arrangedat the bottom of the vehicle body. The mortar uniform-crushing mechanism comprises a primary crushing assembly, a smashing assembly and a filter screen. The primary crushing assembly is arranged above the smashing assembly. A discharging hopper communicating with the interior of the stirring box is arranged at the bottom of the stirring box. A material conveying pipeline is arranged at the bottomof the discharging hopper. A feeding nozzle is arranged at the right end of the stirring box. A solenoid valve is arranged on the material conveying pipeline. The grouting ejection device for the coal mine tunnel has the beneficial effects that through the mortar uniform-crushing mechanism, filtering of larger mortar particles can be achieved, and repeated crushing operation can be conducted on the mortar particles; meanwhile, shaking of the filter screen can also be achieved; and in addition, through the mortar ejection mechanism, a mortar ejection head is capable of conducting mortar ejection operation on slopes of the coal wall.

Description

technical field [0001] The invention relates to the technical field of grouting equipment, in particular to a grouting injection device for coal mine roadways. Background technique [0002] During the excavation process of the coal mine, the gas gushes out rapidly, and the gas content in the ventilation often exceeds the limit, making it difficult to carry out the operation smoothly. In order to stabilize the rate of gas gushing and reduce the frequency of overruns, the mine currently adopts the method of hanging net shotcrete to close the roadway and the method of shotcreting the coal wall of the underground shotcrete material, usually cement, sand, gravel and other materials on site. Stir, and then use a shotcrete machine or a grouting machine to directly spray it onto the coal mine rock formation. After the cement material is solidified, it can play the role of closed support to slow down the gas gushing out of the coal wall. The existing shotcrete machine has a structure...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a grouting injection device for coal mine roadway to solve the technical problems that it is difficult to carry out grouting operation on the slope on the coal wall and the screen is blocked

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