Gob-side entry retaining double-layer sliding die filling system

Abstract

The invention provides a gob-side entry retaining double-layer sliding die filling system which comprises a hydraulic bracket, a filling cavity and a rigid connecting rod, wherein the filling cavity comprises a sleeve and an inner filling cavity, and the inner filling cavity is arranged in the sleeve and moves relative to the sleeve along the movement direction of the hydraulic bracket; a roller is arranged on the bottom edge of the sleeve, a flap is hinged to the bottom edge of the inner filling cavity, and the flap can rotate around a hinge pin between a folding position and an unfolding position; and a connecting block is fixedly arranged on the sleeve, one end of the rigid connecting rod is fixedly connected with the hydraulic bracket, and the other end of the connecting rod is fixedly connected with the connecting block.

Description

technical field [0001] The invention relates to an automatic wall forming device for gob-side entry retaining, in particular to a filling system for a roadway filling wall with a double-layer structural formwork. Background technique [0002] At present, when the gob-side entry retaining technology is adopted in the coal mining face, the construction of the backfill wall of the roadway usually requires manual construction of formwork, and the concrete wet shotcrete machine sprays gangue concrete into the formwork of the backfill wall of the roadway. Manually dismantle the formwork and rebuild the infill wall of the next section. Due to the solidification time, the built formwork cannot be reused, and the formwork on both sides of the filling wall needs to be rebuilt each time. [0003] In the prior art, CN201265431Y discloses an alley-assisted filling vehicle. The hydraulic support is connected to the filling vehicle through a circular chain, and is pulled by a traction oil...

AI Technical Summary

Problems solved by technology

Due to the solidification time, the built formwork cannot be reused, and the formwork on both sides of the filling wall needs to be rebuilt every time it is built, which is time-consuming and laborious, the degree of mechanization is low, and safety accidents are prone to occur, which seriously affects the safety and efficiency of coal mine production.

[0003] In the prior art, CN201265431Y discloses a roadside filling vehicle, the hydraulic support is connected to the filling vehicle through a circular chain, and is pulled by the traction cylinder on the circular chain, due to the diameter of the circular chain and the space behind the hydraulic support Due to the limitation, the power of the traction cylinder cannot be too large, and because the filling wall needs to be sealed, the box body of the filling vehicle must be directly on the roadway floor, and the friction force of sliding friction is very large. Poor or obstacles, it is easy to cause the filling truck to be stuck and unable to move, seriously affecting the construction of the filling wall, and even affecting the normal mining operation

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