A safety protection device for the lower end of steeply inclined fully mechanized mining

Abstract

The invention discloses a safety protective device for a steep-dip comprehensive mining lower end head. The safety protective device is mounted on a machine tail of a scraper conveyor, and consists of a mounting base, a fixed base and a movable plate, wherein the mounting base is fixedly arranged on the tail wall of the scraper conveyor; the movable plate is parallel to the fixed plate; the fixed plate is connected with the movable plate through a telescopic pole; the telescopic pole is vertically mounted; the top end of the telescopic pole is fixedly arranged on the upper edge of the movable plate; the bottom end of the telescopic pole is fixedly arranged on a lifting base; the two ends of the lifting base are equipped with slide pins; slide slots are vertically formed in the fixed plate, and the slide pins are arranged in the slide slots; the bottom of the lifting base is connected to the top end of a piston rod of a lifting jack; and a lifting jack hydraulic cylinder is fixedly arranged on the mounting base. According to the safety protective device disclosed by the invention, the movable plate can stretch out and draw back up and down to adapt to height of different alley top plates. A plurality of coal blocking devices of the safety protective deice are mounted on the machine tail, and lifting height of each device can be different to adapt to top plates at different heights. The fixed plate can be separated from the movable plate, so that the fixed plate and the movable plate can separately enter a shaft, and are easily mounted underground.

Description

Technical field [0001] The invention specifically relates to an underground coal mining equipment, in particular to a gangue retaining device of a scraper conveyor. Background technique [0002] Comprehensive mechanized coal mining has become popular. The scraper conveyor is a continuous coal transportation machine, which is set on the coal mining face. Due to the terrain, the coal mining face is often in an inclined state. The scraper conveyor is arranged along the coal mining face, and the nose At the top, the tail is at the bottom. When the coal is transferred to the scraper conveyor, the scraper on the scraper conveyor is used to scrape the coal to move the coal from the bottom down to the tail and transfer it to another transportation device Go up and transport out of the well. The scraper conveyor is composed of a nose, a tail, and a transport trough. Walls on both sides of the transport trough at the tail are used to block coal. Because the coal is moving on the scraper c...

AI Technical Summary

Problems solved by technology

[0006] (1) With the advancement of coal mining work, the coal mining face continues to move forward, and the scraper conveyor must also move accordingly. During the movement, if the coal retaining plate is high, it will collide with the roof of the machine lane , the scraper machine is inconvenient to move

If the coal retaining board is too low, the coal retaining safety cannot be guaranteed

[0007] (2) The area of ​​the coal retaining plate is large, and it is inconvenient to move, and it is very inconvenient in the process of moving from the outside of the well to the inside of the well

not conducive to installation

[0008] (3) A single coal retaining board is relatively thin, and its ability to retain coal is limited. If it encounters an oversized coal block, it is easy to be knocked down

[0009] (4) The roof of the roadway is not a completely flat plane, and the shape of the roof changes irregularly at any time when the coal seam advances, so it is difficult for the coal retaining plate to adapt to the shape of the roof

As a result, the tail of the aircraft and the roof of the lane cannot be completely covered, leaving a gap, and coal may jump out of the gap and hurt people

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