CN102128050B - Automatic deceleration downspouting on large-obliquity mining working surface - Google Patents

Abstract

In order to solve the problems of difficult transportation and complicated transportation technology in the large-inclination mining face, an automatic deceleration chute for large-inclination coal mining face composed of ordinary chute, coal shoveling plate, coal retaining plate, impact induction device and deceleration device was invented. When the coal transport speed in the chute is too fast or the amount of coal is too large, the automatic adjustment of the coal self-slipping speed is realized through the rotation of the induction plate. The chute is a high-efficiency chute with low cost, simple installation process, convenient movement, safe and reliable transportation, and can adapt to changes in the inclination angle of coal seams. The utility model has the advantages of improving the safety of the transportation of the working face and reducing the labor intensity of the transportation of the working face.

Description

Automatic deceleration chute in coal mining face with large inclination angle

Technical field: The present invention is a kind of transportation equipment applied to the coal mining face of a large-inclination coal mine.

Background technique:

High-dip coal seams usually refer to coal seams with a lower limit of dip angle of 30° to 35° and an upper limit of dip angle of 50° to 55°. This type of coal seam has attracted more and more attention from the mining industry in my country. There are two reasons: 1. There are a large number of coal seams with a large dip angle above 35°. In Sichuan, Chongqing, Yunnan, Guizhou, Xinjiang, Gansu, Ningxia, etc., which are major coal-producing provinces (regions), large-dip coal seams are the main coal seams of many mining areas or mines. With the westward shift of my country's mineral resources mining focus in the 21st century, the research on the mining of high-dip coal seams will be a major topic of coal mining in the west. 2. Years of mining have reduced the coal seam reserves with "superior" conditions in the eastern mining area, and many mines have turned to complex coal seams with large dip angles. Obviously, to maintain high production, high efficiency and sustainable development of these mining areas must solve large Mining technical problems of dipped coal seams. Because the current development level of the mining of steeply inclined coal seams is far lower than that of gently inclined coal seams, there are a series of unresolved basic technical problems, mainly including high labor intensity of support work, low recovery rate, and difficult transportation of working faces.

The most commonly used transportation methods for large-inclination working faces are self-sliding transportation or scraper conveyor transportation. When the inclination angle of the coal seam is large, the coal can be slid along the floor of the working face or a chute can be laid. The transportation is simple and requires less equipment and manpower, but the speed of slid coal cannot be controlled. Or when the chute turns, the coal will jump out of the chute and fly into the working face, causing injury accidents; it is safe and reliable to use the scraper conveyor for transportation, but the installation and moving process of the large-inclination working face is complicated, which not only requires equipment and manpower, but also To solve the problem of conveyor slippage, it has a great impact on production speed. The invention aims to solve the problem of coal transportation in the mining working face when the longwall working face is arranged to be mined in the large dip angle coal seam.

Invention content:

In order to solve the transportation problems existing in the mining work at large dip angles, improve the safety of the transportation of the working face, and reduce the labor intensity of the transportation of the working face, a low-cost, simple installation process, convenient movement, safe and reliable transportation, and can be adapted to the invention has been invented. A kind of chute whose inclination angle of coal seam changes is called the automatic deceleration chute of large-inclination coal mining face, and the content of this invention is as follows:

The automatic deceleration chute is composed of an ordinary chute, a coal shovel plate, a coal retaining plate, an impact sensing device and a deceleration device. Each impact sensing device and deceleration device is hinged with a common chute through a rotating shaft. Through the connection of the control rod, when the coal transport speed in the chute is too fast, there will be a large impact on the induction device, the induction plate will rotate counterclockwise along the rotation axis, and the traction deceleration plate will rotate, reducing the coal passing space and increasing the coal self-sliding resistance , to reduce the self-slipping speed of coal. When a large amount of coal passes through the speed brake, it will have an impact on the speed brake, so that the speed brake will rotate counterclockwise along the rotation axis, and the traction induction plate will rotate clockwise to restore the initial state and realize the automatic speed regulation process.

Description of drawings:

Fig.1 Schematic diagram of automatic deceleration chute in large-inclination coal mining face

In the figure: 1-chute; 2-coal production plate; 3-coal retaining plate; 4-induction plate; 5-rotation shaft; 6-control rod;

Detailed ways:

1. The installation of the chute

When installing each group of chute from bottom to top, install the chute with the rotating shaft 5 first, connect the chute, install the induction plate 4 and the deceleration plate 5 on the chute, and then connect the induction plate 4 and the deceleration plate 7 through the case roll control rod 6 .

2. Adjust the initial resistance

When the initial installation and the inclination angle of the coal seam change, the angle between the induction plate and the chute can be adjusted by the induction plate angle adjustment device 8, so as to adjust the sliding resistance of the coal.

3. Slow down

When a large amount of coal slides down rapidly in the chute and impacts the induction plate 4, the induction plate 4 rotates counterclockwise along the rotating shaft 5, and the speed reducer 7 is driven to rotate clockwise through the control rod 6, which reduces the coal passing space, increases the coal sliding resistance, and reduces the coal shipping speed.

4. Recovery

When a large amount of coal passes through the deceleration plate 7, an impact is generated on the deceleration plate 7, and the deceleration plate 7 rotates counterclockwise, and the control rod 6 drives the induction plate 4 to rotate clockwise to restore the initial state, thereby realizing the automatic speed regulation process.

5. Applicable place

Figure 1 shows the automatic deceleration chute on the left working face. If it is used in the right working face, it is necessary to make a mirror image entity of the chute of the present invention, or use it after exchanging the positions of the induction plate 4 and the deceleration plate 7.

Claims (2)

1. big angle coal face automatic retarding chute, it is characterized in that: tablet (4) upper end is connected with spillplate (3) by tablet angle regulator (8), middle part connects by axis of rotation (5) and chute bottom hinge, and lower end and control lever (6) are hinged; Brake flap (7) middle part connects by axis of rotation (5) and chute bottom hinge, and upper end and control lever (6) are hinged; Control lever (6), upper and lower two ends are hinged with tablet (4) and brake flap (7) respectively, between control lever two parts, are slidably connected; Tablet (4) drives brake flap (7) and turns clockwise while being rotated counterclockwise, play the effect that reduces Coal Transport speed, be rotated counterclockwise after brake flap (7) is impacted, drive tablet (4) and turn clockwise, and restPose.

2. big angle coal face automatic retarding chute according to claim 1, described tablet angle regulator (8) be adjustable springs, by its elongation with shorten the initial angle of regulating tablet (4).

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