Net laying device and method for fully-mechanized coal mining face

Abstract

The invention discloses a net laying device and method for a fully-mechanized coal mining face. The net laying device comprises a plurality of hydraulic supports arranged along the fully-mechanized coal mining face and net storage hooks, and the net storage hooks are fixed to the bottoms of side protection plates of the hydraulic supports; and the net laying method comprises the steps of (1) net roll erecting, (2) automatic net laying and (3) net fixing. The net laying device and method have the beneficial effects that operation is easy, the number of operators is decreased, and the working time is shortened; the working safety factor of the operators is increased; the effect of the side protection plates is fully exerted; the labor intensity is reduced, and the work efficiency of coal mining is ensured; and the free expansion and contraction quantity of a laid net is ensured, the possibility that the net is torn is decreased, and the safety of a retracement operation environment is guaranteed.

Description

[0001] Technical field: [0002] The patent of the invention belongs to the technical field of coal mining, and in particular relates to a net laying device and a net laying method for a fully mechanized mining face. [0003] Background technique: [0004] In the mechanized mining of coal mines, the final mining of the mining face is the last link of the coal mining face, and it is also an important link to prepare for the removal of the mining face. The high-strength flexible net is laid on the roof 7 of the working face through the hydraulic support 2, which can effectively prevent The top plate 7 of the working face is broken and the gangue falls, providing a safe working environment for the withdrawal equipment, so it is very important to adopt the correct laying process, such as figure 1 As shown, the current traditional net laying process mainly uses the existing hydraulic support 2 to lay the net. The specific steps for adopting the existing hydraulic support 2 to lay th...

AI Technical Summary

Problems solved by technology

[0005] The above method has the following problems: 1. In operation 1, due to the need to stop the tunneling of the fully mechanized mining face when the bolt is installed, the mine pressure will appear concentrated between the fully mechanized mining face and the hydraulic support top beam, and then The roof of the working face is often separated, broken, or even leaked, which poses a serious threat to the safety of the workers; 2. The side guard can only support the roof of the working face when it is opened to protect the safety of the workers. When it is put away, it has no effect. In the process of laying the net, the operator not only needs to frequently operate the winch but also needs to control the opening and retracting of the side guard. For convenience and trouble, the operator often puts the side guard 3. When the top beam above the net roll is not completely covered by the net, the gangue on the top plate of the working face will easily fall from the gap between the top beams to the net being lifted. It is very difficult for the operator to operate the winch to hold up the net coil, and even need to stop the production of the fully mechanized mining face to clean up the gangue on the net coil, which affects the working efficiency of coal mining; 4. Due to the weight of the net coil and the The weight of the gangue encircled by the net roll makes the net roll stretched during the unfolding process, resulting in a decrease in the free expansion and contraction of the net after being laid, and the gangue falling on the top plate of the working surface is easy to tear the net, affecting 5. In the process of laying the net, the operator controls the winch to lower the net roll and unfold it, which blocks the coal mining driver and the support worker of the hydraulic support from observing the coal wall and the roof of the working face. It is not conducive to safe production; 6. Using the above-mentioned net-laying process, it takes a long time to lay the net, which increases the probability of operators being exposed between the fully mechanized mining face and the top beam, and increases the threat to the personal safety of the operators, and the required There are many labor forces and high labor costs

Images