Abrasion-proof flame-retardant device for fully mechanized coal mining face of coal mine

Abstract

The utility model relates to the technical field of conveying equipment, in particular to an anti-abrasion flame-retardant device for a fully mechanized coal mining face of a coal mine. According to the technical scheme, the device comprises a carrier roller, supporting seats, a base, a mounting shaft and a mounting cylinder, the supporting shaft is arranged between the supporting seats, the outer wall of the supporting shaft is sleeved with a sealing bearing, the outer wall of the sealing bearing is sleeved with the carrier roller, a rotating shaft is rotationally installed in a second bearing support, and synchronous wheels are arranged on the outer wall of the rotating shaft and the front end of the carrier roller. The outer walls of the synchronous wheels are sleeved with belts, a mounting shaft is rotationally mounted in the first bearing support, the outer wall of a rotating shaft is sleeved with a first gear, the outer wall of the mounting shaft is sleeved with a second gear, a second brush plate is arranged on the outer side of the mounting shaft, and a brush is arranged on the outer wall of the second brush plate. No extra energy consumption is needed, rotation of the carrier roller is used as power, the inner wall of the upper end of the conveying belt is cleaned, abrasion of the carrier roller and the conveying belt is reduced, and good abrasion-resistant and flame-retardant effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, and in particular to a wear-resistant and flame-retardant device for fully mechanized coal mining faces. Background Technology

[0002] A fully mechanized longwall face in coal mining typically refers to a specific area in coal mining where coal is extracted using integrated mining methods. "Fully mechanized" here refers to a comprehensive mining approach, specifically the use of mechanized equipment for integrated mining operations in inclined or thin coal seams. This longwall face encompasses a series of mining production activities, including coal seam extraction, support, transportation, and ventilation.

[0003] Self-propelled conveyor belts (WBMs) are mobile mechanical devices widely used in fully mechanized coal mining faces. Their main function is to move and transport coal or ore. WBMs play a crucial role in fully mechanized mining faces, enabling rapid and efficient coal cutting, loading, and transportation. While the WBM's idlers support the conveyor belt, wear on the idlers and belt during operation generates particles. Furthermore, the use of idlers for load-bearing transport during coal loading results in significant loads, rapid wear, and a risk of fire. Therefore, we propose a wear-resistant and flame-retardant device for fully mechanized coal mining faces to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a wear-resistant and flame-retardant device for fully mechanized coal mining faces.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and flame-retardant device for a fully mechanized coal mining face, comprising a roller, a support base, a base, an installation shaft, and an installation cylinder. A support shaft is provided between the support bases. A symmetrically distributed sealed bearing is sleeved on the outer wall of the support shaft. A roller is rotatably sleeved on the outer wall of the sealed bearing. A bearing bracket two is provided at the upper end of the base. A rotating shaft is rotatably installed inside the bearing bracket two. A synchronous wheel is provided on the outer wall of the rotating shaft and the front end of the roller. A belt is sleeved on the outer wall of the synchronous wheel. A bearing bracket one is provided at the upper end of the base. An installation shaft is rotatably installed inside the bearing bracket one. A gear one is sleeved on the outer wall of the rotating shaft. A gear two is sleeved on the outer wall of the installation shaft. A brush plate two arranged in a circular array is provided on the outer side of the installation shaft. Brushes are equidistantly distributed on the outer wall of the brush plate two.

[0006] Preferably, two springs are provided at equal intervals between the mounting shaft and the brush plate. The springs elastically support the brush plate against the outer wall of the mounting shaft, so that the brush is elastically attached to the upper inner wall of the conveyor belt.

[0007] Preferably, a positioning cylinder and a positioning rod are slidably inserted inside the second spring. One end of the positioning cylinder is connected to the outer wall of the mounting shaft, and one end of the positioning rod is connected to the brush plate. During the extension and retraction of the second spring, the positioning cylinder slides on the outer wall of the positioning rod, limiting the movement of the second spring and preventing it from shifting outward.

[0008] Preferably, the lower end of the support base is provided with an installation cylinder, and a sealing ring is embedded in the inner wall of the lower end of the installation cylinder. A plug rod, whose lower end is connected to the base, is slidably installed inside the sealing ring. The plug rod receives sliding support when it slides inside the installation cylinder through the sealing ring, while the sealing ring intercepts external contaminants.

[0009] Preferably, the upper end of the piston rod is provided with a piston that is slidably mounted inside the mounting cylinder, and the piston has oil holes arranged in a ring array inside. When the piston squeezes the hydraulic oil inside the mounting cylinder, the hydraulic oil flows through the oil holes and applies resistance to the piston.

[0010] Preferably, a spring three is provided at the upper end of the piston, and the spring three is connected to the upper end of the piston. The spring three elastically connects the piston and the mounting cylinder together, and the extension and retraction of the spring three drives the piston to move.

[0011] Preferably, the upper end of the base is provided with symmetrically distributed springs, the upper end of the springs is provided with a brush plate, and the upper end of the brush plate is provided with equidistantly distributed brushes. The springs provide elastic support to the lower end of the brush plate, so that the brushes elastically fit against the lower outer wall of the roller.

[0012] Preferably, the spring has a slidably inserted positioning rod and a positioning cylinder inside. The upper end of the positioning rod is connected to the brush plate, and the lower end of the positioning cylinder is connected to the base. During the extension and retraction of the spring, the positioning cylinder slides on the outer wall of the positioning rod, limiting the extension and retraction of the spring and preventing it from shifting outward.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses several idlers to support the bottom of the conveyor belt of the self-propelled machine, thereby conveying the coal. During the conveying process, the idlers rotate in the same direction due to friction from the conveyor belt. Through the linkage of the synchronous pulley, belt, gear one and gear two, the mounting shaft rotates, causing the brush plate two on the outer wall of the mounting shaft to rotate in the opposite direction to the conveyor belt. This brush plate contacts the upper inner wall of the conveyor belt, scraping away the micro-particles that fall off due to friction of the conveyor belt itself and the particles that adhere to the coal during transportation. This reduces the wear between the conveyor belt and the idlers, thereby improving the wear-resistant and flame-retardant properties of the idlers and enhancing the safety of the idler structure of the self-propelled machine. Attached Figure Description

[0015] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a three-dimensional cross-sectional view of the mounting cylinder of this utility model;

[0018] Figure 4 This is a rear-view three-dimensional structural diagram of the gear of this utility model;

[0019] Figure 5 This is a two-sided three-dimensional structural diagram of the gear of this utility model.

[0020] Reference numerals in the attached diagram: 1. Idler roller; 2. Support seat; 3. Spring 1; 4. Mounting cylinder; 5. Base; 6. Bearing bracket 1; 7. Mounting shaft; 8. Bearing bracket 2; 9. Positioning cylinder 1; 10. Positioning rod 1; 11. Brush plate 1; 12. Spring 3; 13. Oil hole; 14. Piston; 15. Sealing ring; 16. Plug rod; 17. Sealed bearing; 18. Support shaft; 19. Synchronous pulley; 20. Belt; 21. Rotating shaft; 22. Gear 1; 23. Gear 2; 24. Positioning rod 2; 25. Spring 2; 26. Positioning cylinder 2; 27. Brush plate 2; 28. Brush. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-5As shown, this utility model proposes a wear-resistant and flame-retardant device for a fully mechanized coal mining face. The device includes a roller 1, a support seat 2, a base 5, an installation shaft 7, and an installation cylinder 4. A support shaft 18 is provided between the support seats 2. A symmetrically distributed sealed bearing 17 is sleeved on the outer wall of the support shaft 18. The roller 1 is rotatably sleeved on the outer wall of the sealed bearing 17. A bearing bracket 2 8 is provided at the upper end of the base 5. A rotating shaft 21 is rotatably installed inside the bearing bracket 2 8. A synchronous wheel 19 is provided on the outer wall of the rotating shaft 21 and the front end of the roller 1. A belt 20 is sleeved on the outer wall of the synchronous wheel 19. A bearing bracket 6 is provided at the upper end of the base 5. An installation shaft 7 is rotatably installed inside the bearing bracket 6. A gear 22 is sleeved on the outer wall of the rotating shaft 21. A gear 23 is sleeved on the outer wall of the installation shaft 7. A brush plate 27 arranged in a circular array is provided on the outer side of the installation shaft 7. Brushes 28 are evenly distributed on the outer wall of the brush plate 27.

[0023] Springs 25 are evenly distributed between the mounting shaft 7 and the brush plate 27;

[0024] The second spring 25 has a positioning cylinder 26 and a positioning rod 24 slidably inserted inside it. One end of the positioning cylinder 26 is connected to the outer wall of the mounting shaft 7, and one end of the positioning rod 24 is connected to the brush plate 27.

[0025] Based on the implementation steps of Embodiment 1: When the self-moving machine drives the conveyor belt to rotate, it drives the conveyor belt to transport coal. The bottom of the conveyor belt is supported by several idler rollers 1. The conveyor belt drives the idler rollers 1 to rotate through friction. The idler rollers 1 rotate in the direction of the conveyor belt's movement, which in turn drives the synchronous pulley 19 to rotate. Through the linkage of the belt 20, the synchronous pulley 19 on the outer wall of the rotating shaft 21 rotates, which in turn drives the rotating shaft 21 to rotate. The rotating shaft 21 drives the gear 1 22 to rotate. Because the gear 1 22 meshes with the gear 23, it drives the mounting shaft 7 to rotate inside the bearing bracket 1 6, which in turn drives the brush plate 27 and the brush 28 to rotate. The direction of rotation of the brush 28 is as follows: In the opposite direction to the conveyor belt's transmission, a scraping force is applied to the inner wall of the upper end of the conveyor belt to brush away the particles carried at the lower end of the conveyor belt. This prevents particles from entering between the idler roller 1 and the conveyor belt, which would lead to increased wear on the contact surface. By cleaning the inner wall of the upper end of the conveyor belt, the wear-resistant properties of the idler roller 1 are improved. At the same time, the friction between particles is reduced, thus lowering the risk of spontaneous combustion. Meanwhile, the self-cleaning brush plate 27 is elastically supported by the spring 25. The wear process of the brush 28 ensures that it always adheres to the inner wall of the upper end of the conveyor belt, improving the stability of the cleaning structure. Since no additional power equipment is required, the process is more energy-efficient and environmentally friendly.

[0026] like Figures 1-5As shown, compared with Embodiment 1, the wear-resistant and flame-retardant device for fully mechanized coal mining faces proposed in this utility model further includes: an installation cylinder 4 is provided at the lower end of the support base 2, a sealing ring 15 is embedded in the inner wall of the lower end of the installation cylinder 4, and a plug rod 16 connected to the base 5 at its lower end is slidably installed inside the sealing ring 15.

[0027] A piston 14 is slidably mounted inside the mounting cylinder 4 at the upper end of the piston rod 16. Oil holes 13 are arranged in a ring array inside the piston 14.

[0028] A spring 12 is provided at the upper end of the piston 14, and the spring 12 is connected to the upper end of the piston 14.

[0029] The upper end of the base 5 is provided with symmetrically distributed springs 3, the upper end of the springs 3 is provided with a brush plate 11, and the upper end of the brush plate 11 is provided with equidistantly distributed brushes 28.

[0030] The spring 3 has a slidingly inserted positioning rod 10 and a positioning cylinder 9 inside. The upper end of the positioning rod 10 is connected to the brush plate 11, and the lower end of the positioning cylinder 9 is connected to the base 5.

[0031] In this embodiment, when the coal load conveyed by the conveyor belt is too large, the spring 12 contracts under force, squeezing the piston 14 to slide inside the mounting cylinder 4. During the movement of the piston 14, the hydraulic oil inside the mounting cylinder 4 flows through the oil hole 13, applying resistance to the piston 14. The spring 12 is damped, thereby buffering the idler roller 1 with a large load and reducing the pressure on the idler roller 1. At the same time, the buffer structure plays a role in vibration reduction, improving the stability of the self-propelled machine during use. When the idler roller 1 rotates, the brush 28 structure at the lower end and the brush plate 11 at the upper end scrapes the lower end of the idler roller 1, brushing away the particles adhering to the outer wall of the idler roller 1, further reducing the friction loss between the conveyor belt and the idler roller 1.

[0032] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coal mine fully mechanized mining face anti-abrasion and flame-retardant device, comprising a carrier roller (1), a supporting seat (2), a base (5), a mounting shaft (7) and a mounting cylinder (4), characterized in that: Supporting shafts (18) are arranged between the supporting seats (2), outer walls of the supporting shafts (18) are rotatably sleeved with symmetrically distributed sealing bearings (17), outer walls of the sealing bearings (17) are rotatably sleeved with the carrier rollers (1), the bottom seat (5) is provided with a bearing support two (8) at the upper end, a rotating shaft (21) is rotatably installed in the bearing support two (8), the rotating shaft (21) is provided with a synchronous wheel (19) at the outer wall and the front end of the carrier roller (1), the synchronous wheel (19) is sleeved with a belt (20) at the outer wall, the bottom seat (5) is provided with a bearing support one (6) at the upper end, an installation shaft (7) is rotatably installed in the bearing support one (6), the rotating shaft (21) is sleeved with a gear one (22) at the outer wall, the installation shaft (7) is sleeved with a gear two (23) at the outer wall, the installation shaft (7) is provided with brush plates two (27) which are arranged in an annular array at the outer side, the brush plates two (27) are provided with brush (28) which are arranged at equal intervals at the outer wall.

2. The coal mine fully mechanized mining face anti-abrasion and flame-retardant device according to claim 1, characterized in that: Spring two (25) is arranged at equal intervals between the installation shaft (7) and the brush plate two (27).

3. The coal mine fully mechanized mining face anti-abrasion and flame-retardant device according to claim 2, characterized in that: The positioning rod two (24) and the positioning cylinder two (26) are slidably inserted into the spring two (25), one end of the positioning cylinder two (26) is connected with the outer wall of the installation shaft (7), and one end of the positioning rod two (24) is connected with the brush plate two (27).

4. The coal mine fully mechanized mining face anti-abrasion and flame-retardant device according to claim 1, characterized in that: The supporting seat (2) is provided with an installation cylinder (4) at the lower end, a sealing ring (15) is embedded and installed in the inner wall of the lower end of the installation cylinder (4), and a plug rod (16) connected with the bottom seat (5) is slidably installed in the sealing ring (15).

5. The coal mine fully mechanized mining face anti-abrasion and flame-retardant device according to claim 4, characterized in that: The plug rod (16) is provided with a piston (14) slidably installed in the inner part of the installation cylinder (4), and the piston (14) is provided with oil holes (13) arranged in an annular array in the inner part.

6. The coal mine fully mechanized mining face anti-abrasion and flame-retardant device according to claim 5, characterized in that: The piston (14) is provided with spring three (12) connected with the upper end of the piston (14).

7. The coal mine fully mechanized mining face anti-abrasion and flame-retardant device according to claim 1, characterized in that: The bottom seat (5) is provided with spring one (3) arranged symmetrically at the upper end, the spring one (3) is provided with brush plate one (11) at the upper end, and the brush plate one (11) is provided with brush (28) arranged at equal intervals at the upper end.

8. The coal mine fully mechanized mining face anti-abrasion and flame-retardant device according to claim 7, characterized in that: The spring one (3) is provided with a positioning rod one (10) and a positioning cylinder one (9) which are slidably inserted into the spring one (3), the positioning rod one (10) is connected with the brush plate one (11) at the upper end, and the positioning cylinder one (9) is connected with the bottom seat (5) at the lower end.

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