Automatic wind screen hanging device for fully mechanized caving face

Abstract

The utility model relates to the field of coal mine safety technology, specifically disclose a kind of automatic wind tent hanging device of fully mechanized caving face, including support roof beam, wind guide tent, support help plate, steel wire rope, pulley block, pulley fixed link, weight, pneumatic cylinder, pneumatic control box, pressure pipe and support stand column, the wind guide tent is hung on steel wire rope using S type hook, one end S type hook is fixedly connected with steel wire rope, the other end S type hook is fixedly connected with pulley fixed link, one end of steel wire rope is fixed on support roof beam, the other end is fixedly connected with weight by pulley block, the output of pneumatic cylinder is fixedly connected with one of pulley block, the intelligent opening and closing and accurate wind guide of wind guide tent are realized by pneumatic automation control system, meanwhile, wind guide tent using multifunctional composite material has high strength, flame-retardant explosion-proof, photocatalytic purification and wear-resistant antifouling characteristics, significantly improve the downhole ventilation safety and operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coal mine safety technology, and specifically discloses an automatic ventilation duct hanging device for fully mechanized longwall mining faces. Background Technology

[0002] During the longwall mining process in coal mines, personnel often need to enter the return air corner for gas checks and other operations. This is especially true for longwall top coal caving faces, where a rear scraper conveyor is installed. Personnel frequently need to enter the rear scraper conveyor area for work or routine maintenance. This area is a region where toxic and harmful gases accumulate, and it is also a low-oxygen, confined space environment. Poor ventilation can easily lead to asphyxiation accidents.

[0003] Traditionally, ventilation problems in the return air corner and the area of ​​the rear scraper conveyor are solved by hanging a fixed air guide tent on the tail support. This allows for manual intervention of local airflow into the rear scraper conveyor and return air corner, diluting toxic and harmful gases in the return air corner and ensuring personnel safety during operation. However, this fixed air guide tent requires manual hanging and unhanging during personnel passage, support movement, and coal mining, which also affects the raising and lowering of the support. Frequent hanging and unhanging operations during production pose significant safety risks, cannot achieve safe and efficient operation, and also affects airflow stability, resulting in poor effectiveness in improving oxygen concentration in the return air corner. Therefore, an automatic air guide tent hanging device for fully mechanized longwall mining faces is needed to solve this problem. Utility Model Content

[0004] This utility model proposes an automatic ventilation tent hanging device for fully mechanized mining faces. Through a pneumatic automatic control system, it realizes intelligent opening and closing and precise air guidance of the ventilation tent. At the same time, the ventilation tent, which adopts multifunctional composite materials, has the characteristics of high strength, flame retardancy and explosion protection, photocatalytic purification and wear resistance and anti-fouling, which significantly improves the safety of underground ventilation and the efficiency of operation.

[0005] This utility model is implemented as follows: an automatic ventilation tent hanging device for a fully mechanized longwall mining face includes a support top beam, a ventilation tent, a support side plate, a wire rope, a pulley block, a pulley fixing rod, a counterweight, a pneumatic cylinder, a pneumatic control box, a compressed air pipe, and a support column. The ventilation tent is suspended from the wire rope by an S-hook, with one end of the S-hook fixedly connected to the wire rope and the other end of the S-hook fixedly connected to the pulley fixing rod. One end of the wire rope is fixed to the support top beam, and the other end is fixedly connected to the counterweight through the pulley block. The output end of the pneumatic cylinder is fixedly connected to one of the pulleys in the pulley block, and the pneumatic cylinder is connected to the pneumatic control box through the compressed air pipe.

[0006] As a preferred embodiment of the automatic ventilation tent hanging device for fully mechanized mining face of this utility model, the ventilation tent is made of composite flame-retardant and anti-static cloth material, including a base layer and a functional coating. The base layer is a high-strength polyester fiber woven cloth, and the functional coating is a photocatalytic flame-retardant coating containing nano-titanium dioxide. The surface of the functional coating is covered with a transparent wear-resistant and hydrophobic layer.

[0007] As a preferred embodiment of the automatic windbreak hanging device for fully mechanized longwall mining face according to this utility model, the windbreak is 3.5m high and 4m wide, with a hole of 10mm in diameter provided every 0.4m along the width direction at the top, and an S-shaped hook made of No. 8 steel wire passing through each hole.

[0008] As a preferred embodiment of the automatic windbreak hanging device for fully mechanized mining face according to this utility model, the pulley group includes a first pulley fixedly connected to the output end of the pneumatic cylinder, a second pulley fixedly connected to the outer wall of the support side plate, and two third pulleys fixedly connected to the lower end of the support top beam by pulley fixing rods.

[0009] As a preferred embodiment of the automatic ventilation tent hanging device for fully mechanized mining face according to this utility model, the pneumatic control box is equipped with a green open button and a red close button, and is connected to both ends of the pneumatic cylinder through two independent compressed air pipes to control the extension and retraction of the cylinder.

[0010] As a preferred embodiment of the automatic windbreak hanging device for fully mechanized mining face according to this utility model, the weight of the counterweight is 5kg, the diameter is 150mm, and the height is 500mm, which is used to provide power when the windbreak is opened.

[0011] The beneficial effects of this utility model are:

[0012] 1. By remotely controlling the cylinder's movement through a pneumatic control box, combined with the counterweight design of pulley blocks and weights, the air guide canopy can be opened and closed quickly and smoothly, significantly improving the efficiency and accuracy of ventilation regulation, effectively improving the gas environment in the return air corner area, and reducing the frequency of manual intervention and safety risks.

[0013] 2. The ventilation tent is made of composite fabric with flame-retardant, anti-static, photocatalytic, wear-resistant and hydrophobic properties. This not only improves the mechanical durability of the material, but also has the functions of decomposing harmful gases, inhibiting gas combustion and explosion and resisting coal dust adsorption, thus comprehensively enhancing the safety and reliability of the equipment in the harsh underground environment. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is an overall structural diagram of an automatic windbreak hanging device for a fully mechanized mining face according to this utility model.

[0016] Figure 2 This is a schematic diagram of the pulley position structure arrangement of this utility model.

[0017] Figure 3 This is a plan view showing the airflow alteration of this utility model.

[0018] Figure 4 This is a structural diagram illustrating the actual position of this utility model.

[0019] Figure 5 This is a structural diagram of the pneumatic cylinder and pulley of this utility model.

[0020] Figure 6 This is a structural diagram of the wind deflector of this utility model.

[0021] The markings in the diagram are: 1. Support top beam; 2. Air guide tent; 2-1. Base layer; 2-2. Functional coating; 2-3. Wear-resistant and hydrophobic layer; 3. Support side plate; 4. Steel wire rope; 5. Pulley block; 5-1. First pulley; 5-2. Second pulley; 5-3. Third pulley; 6. Pulley fixing rod; 7. Counterweight; 8. Pneumatic cylinder; 9. Pneumatic control box; 10. Compressed air pipe; 11. Support column. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-6An automatic ventilation tent hanging device for a fully mechanized mining face includes a support top beam 1, a ventilation tent 2, a support side plate 3, a wire rope 4, a pulley block 5, a pulley fixing rod 6, a counterweight 7, a pneumatic cylinder 8, a pneumatic control box 9, a compressed air pipe 10, and a support column 11. The ventilation tent 2 is suspended from the wire rope 4 by an S-hook, with one end of the S-hook fixedly connected to the wire rope 4 and the other end of the S-hook fixedly connected to the pulley fixing rod 6. One end of the wire rope 4 is fixed to the support top beam 1, and the other end is fixedly connected to the counterweight 7 through the pulley block 5. The output end of the pneumatic cylinder 8 is fixedly connected to one of the pulleys in the pulley block 5. The pneumatic cylinder 8 is connected to the pneumatic control box 9 through the compressed air pipe 10.

[0024] In this embodiment: when the air guide curtain 2 needs to be opened, the operator presses the green button on the pneumatic control box 9. Compressed air enters the pneumatic cylinder 8 through the compressed air pipe 10, pushing the cylinder to contract and causing the first pulley 5-1 to move. The air guide curtain 2 is then pulled open by the steel wire rope 4. When the air guide curtain 2 needs to be closed, the red button is pressed. Compressed air enters the pneumatic cylinder 8 in the opposite direction, the cylinder extends, and the air guide curtain 2 slowly retracts under the gravity of the counterweight 7. When the air guide curtain 2 is open, it guides the fresh airflow from the front scraper conveyor area of ​​the working face to the rear scraper conveyor area and the return air corner area, effectively diluting the concentration of toxic and harmful gases.

[0025] As a technical optimization of this utility model, the air guide tent 2 is made of composite flame-retardant and anti-static cloth material, including a base layer 2-1 and a functional coating 2-2. The base layer 2-1 is a high-strength polyester fiber woven cloth, and the functional coating 2-2 is a photocatalytic flame-retardant coating containing nano titanium dioxide. The surface of the functional coating 2-2 is covered with a transparent wear-resistant and hydrophobic layer 2-3.

[0026] In this embodiment: the high-strength polyester fiber woven fabric imparts extremely high mechanical strength and tear resistance to the ventilation tent 2, ensuring its durability in harsh underground environments; the flame-retardant components in the functional coating 2-2 effectively inhibit flame spread and reduce the risk of underground combustion and explosion, while nano-titanium dioxide can decompose harmful gases such as methane under photocatalysis, improving air quality in the working area; the wear-resistant and hydrophobic layer 2-3 on the surface reduces coal dust adhesion and moisture penetration, maintaining stable ventilation efficiency while enhancing the durability of the coating. The synergistic effect of the overall structure significantly improves the safety, functionality, and service life of the ventilation tent.

[0027] As a technical optimization of this utility model, the wind deflector 2 is 3.5m high and 4m wide. The top is provided with a hole with a diameter of 10mm every 0.4m along the width direction, and an S-shaped hook made of No. 8 steel wire is threaded through each hole.

[0028] In this embodiment, the evenly arranged S-shaped hooks ensure that the air guide tent 2 is subjected to uniform force and slides smoothly, while enhancing structural stability and resistance to deformation, and adapting to the working environment of frequent expansion and contraction underground.

[0029] As a technical optimization of this utility model, the pulley block 5 includes a first pulley 5-1 fixedly connected to the output end of the pneumatic cylinder 8, a second pulley 5-2 fixedly connected to the outer wall of the support side plate 3, and two third pulleys 5-3 fixedly connected to the lower end of the support top beam 1 by pulley fixing rods 6.

[0030] In this embodiment, the pulley group 5, consisting of the first pulley 5-1, the second pulley 5-2 and two third pulleys 5-3, facilitates the opening or closing of the air guide curtain 2 by the pneumatic cylinder 8.

[0031] As a technical optimization of this utility model, the pneumatic control box 9 is equipped with a green open button and a red close button, which are connected to both ends of the pneumatic cylinder 8 through two independent compressed air pipes 10, respectively, for controlling the extension and retraction of the cylinder.

[0032] In this embodiment, the pneumatic control box 9 facilitates the normal operation of the pneumatic cylinder 8.

[0033] As a technical optimization of this utility model, the weight of the hammer 7 is 5kg, the diameter is 150mm, and the height is 500mm, which is used to provide power when the wind deflector 2 is opened.

[0034] In this embodiment: a 5kg weight 7 is used to provide the power for the wind deflector 2 to open.

[0035] The working principle and usage process of this utility model are as follows: When it is necessary to open the air guide curtain 2, the operator presses the green button on the pneumatic control box 9. Compressed air enters the pneumatic cylinder 8 through the compressed air pipe 10, pushing the cylinder to contract and driving the first pulley 5-1 to move. The air guide curtain 2 is then pulled open by the steel wire rope 4. When it is necessary to close the air guide curtain 2, the red button is pressed. Compressed air enters the pneumatic cylinder 8 in the opposite direction, the cylinder extends, and the air guide curtain 2 slowly retracts under the gravity of the counterweight 7. When the air guide curtain 2 is open, it guides the fresh airflow from the front scraper conveyor area of ​​the working face to the rear scraper conveyor area and the return air corner area, effectively diluting the concentration of toxic and harmful gases.

[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An automatic ventilation canopy hanging device for a fully mechanized longwall mining face, characterized in that: The system includes a support top beam (1), a wind deflector (2), a support side plate (3), a steel wire rope (4), a pulley block (5), a pulley fixing rod (6), a counterweight (7), a pneumatic cylinder (8), a pneumatic control box (9), a compressed air pipe (10), and a support column (11). The wind deflector (2) is suspended on the steel wire rope (4) by an S-hook. One end of the S-hook is fixedly connected to the steel wire rope (4), and the other end of the S-hook is fixedly connected to the pulley fixing rod (6). One end of the steel wire rope (4) is fixed to the support top beam (1), and the other end is fixedly connected to the counterweight (7) through the pulley block (5). The output end of the pneumatic cylinder (8) is fixedly connected to one of the pulleys in the pulley block (5). The pneumatic cylinder (8) is connected to the pneumatic control box (9) through the compressed air pipe (10).

2. The automatic ventilation tent hanging device for a fully mechanized longwall mining face according to claim 1, characterized in that: The air guide tent (2) is made of composite flame-retardant and antistatic cloth material, including a base layer (2-1) and a functional coating (2-2). The base layer (2-1) is a high-strength polyester fiber woven cloth, and the functional coating (2-2) is a photocatalytic flame-retardant coating containing nano titanium dioxide. The surface of the functional coating (2-2) is covered with a transparent wear-resistant and hydrophobic layer (2-3).

3. The automatic ventilation tent hanging device for a fully mechanized longwall mining face according to claim 1, characterized in that: The wind deflector (2) is 3.5m high and 4m wide. A hole with a diameter of 10mm is provided at the top every 0.4m along the width direction. An S-shaped hook made of No. 8 steel wire is inserted into each hole.

4. The automatic ventilation tent hanging device for a fully mechanized longwall mining face according to claim 1, characterized in that: The pulley assembly (5) includes a first pulley (5-1) fixedly connected to the output end of the pneumatic cylinder (8), a second pulley (5-2) fixedly connected to the outer wall of the support side plate (3), and two third pulleys (5-3) fixedly connected to the lower end of the support top beam (1) by pulley fixing rods (6).

5. The automatic ventilation tent hanging device for a fully mechanized longwall mining face according to claim 1, characterized in that: The pneumatic control box (9) is equipped with a green open button and a red close button. It is connected to both ends of the pneumatic cylinder (8) through two independent compressed air pipes (10) to control the extension and retraction of the cylinder.

6. The automatic ventilation tent hanging device for a fully mechanized longwall mining face according to claim 1, characterized in that: The weight of the hammer (7) is 5kg, the diameter is 150mm and the height is 500mm, and it is used to provide power for the opening of the wind deflector (2).

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