A belt machine head coal sweeper using a breaker at a fully mechanized coal mining face

Abstract

The utility model discloses a belt machine head coal sweeper of crushing machine for fully mechanized working face, including coal sweeping board, the right side of coal sweeping board is connected with crushing machine, and the lower part of the belt for conveying coal is pasted to the right side of coal sweeping board to scrape the coal or sundries remaining on the belt, the left side of coal sweeping board is high, and the right side is low, and its top surface is smooth and inclined, the right side of coal sweeping board is connected with the side plate of crushing machine through connecting plate, and connecting plate is connected in the inside of crushing machine through bolt, the utility model discloses can prevent the coal on the belt from scattering to the gap of both through adding coal sweeping board between the belt and crushing machine, thereby reducing the artificial cleaning workload, and through coal sweeping board, the coal or sundries remaining on the belt can also be cleaned, the normal operation of the belt conveyor is avoided to influence, and production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mine roadway equipment, and in particular relates to a coal sweeper for the belt conveyor head of a crusher used in fully mechanized mining faces. Background Technology

[0002] The fully mechanized longwall face is the core area for achieving efficient and safe coal mining underground. It integrates coal mining, loading, and transportation processes through a complete set of mechanized equipment.

[0003] The coal mining machine is the core mining equipment. It continuously mines coal, and the mined coal is then transported to the crusher via a belt conveyor. The crusher breaks down large pieces of coal to prevent blockage of the transport channel. However, there is a gap at the connection between the belt and the crusher. If this gap is too large, coal on the belt will spill onto the roadway floor, requiring manual cleaning. Utility Model Content

[0004] The purpose of this utility model is to provide a coal sweeper for the belt conveyor head of a crusher used in a fully mechanized mining face. By adding a coal sweeper to the crusher, the gap between the belt and the crusher is sealed, thereby reducing the amount of spilled coal.

[0005] The present invention adopts the following technical solution: a coal sweeper for the belt conveyor head of a crusher used in a fully mechanized mining face, including a coal sweeping plate; The right side of the coal sweeper is connected to the crusher and is attached to the lower part of the conveyor belt used for transporting coal to scrape off residual coal or debris on the belt. The coal sweeping plate is higher on the left and lower on the right, and its top surface is a smooth, sloping surface; The right side of the coal sweeping plate is connected to the side plate of the crusher via a connecting plate, which is bolted to the inside of the crusher.

[0006] The beneficial effects of this utility model are: by adding a coal sweeping plate between the belt and the crusher, this utility model can prevent coal on the belt from spilling into the gap between the two, thereby reducing the amount of manual cleaning work. At the same time, the coal sweeping plate can also clean up residual coal or debris on the belt, avoiding affecting the normal operation of the belt conveyor and improving production efficiency. Attached Figure Description

[0007] Figure 1 This is a front structural diagram of a coal sweeper for a belt conveyor head of a crusher used in a fully mechanized mining face, according to an embodiment of this utility model. Figure 2 for Figure 1 A magnified view of a portion of the central support section; Figure 3 This is a top view schematic diagram of a coal sweeper for a belt conveyor head of a crusher used in a fully mechanized mining face, according to an embodiment of this utility model.

[0008] Among them: 10. Belt; 20. Crusher; 30. Coal sweeping plate; 40. Column; 50. Spring; 60. Guide column; 70. Side baffle; 80. Connecting plate. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0010] This utility model discloses a coal sweeper for the belt conveyor head of a crusher used in fully mechanized mining faces, such as... Figure 1 As shown, it includes a coal sweeping plate 30; the right side of the coal sweeping plate 30 is connected to the crusher 20, and the right side of the coal sweeping plate 30 is attached to the lower part of the conveyor belt 10 used for transporting coal to scrape off residual coal or debris on the conveyor belt 10; the coal sweeping plate 30 is higher on the left side and lower on the right side, and its top surface is a smooth, sloping surface; as shown... Figure 2 As shown, the right side of the coal sweeping plate 30 is connected to the side plate of the crusher 20 via a connecting plate 80, and the connecting plate 80 is bolted to the inside of the crusher 20.

[0011] This utility model adds a coal sweeping plate 30 between the belt 10 and the crusher 20, which can prevent coal on the belt 10 from falling into the gap between the two, thereby reducing the amount of manual cleaning work. At the same time, the coal sweeping plate 30 can also clean up residual coal or debris on the belt 10, so as to avoid affecting the normal operation of the belt conveyor and improve production efficiency.

[0012] This invention uses a coal-sweeping plate 30 with a specific spatial posture and contact relationship to effectively scrape off the material attached to the bottom of the conveyor belt 10 during operation, thereby preventing coal from continuously leaking along the belt path.

[0013] The coal sweeping plate 30 is the core component for achieving the cleaning function. Its overall plate-like structure allows for direct contact with the bottom surface of the conveyor belt 10, applying moderate pressure to scrape off coal particles, gravel, or other debris adhering to the lower surface of the belt. The coal sweeping plate 30 can be made of wear-resistant materials, such as high-molecular-weight polyethylene, alloy steel, or ceramic composite materials, to adapt to the humid, dusty, and heavy-load working environment underground and extend its service life. The coal sweeping plate 30 extends along the width of the conveyor belt, ensuring coverage of potential coal leakage areas across the entire cross-section of the belt and preventing edge omissions.

[0014] The right side of the coal sweeping plate 30 is connected to the crusher 20, indicating that this end is fixedly supported on the crusher body, forming a stable installation reference. This connection method makes full use of the robust metal structure of the crusher 20 itself, eliminating the need for an additional independent support system, simplifying the overall structure, and saving installation space.

[0015] The left side of the coal sweeping plate 30 is attached to the lower part of the conveyor belt 10 used for transporting coal. This means that the left edge of the coal sweeping plate 30 is close to or slightly in contact with the non-load-bearing surface of the conveyor belt 10 (i.e., the bottom of the return section). When the conveyor belt 10 is running, any material stuck on its bottom surface will be blocked and forcibly removed by the coal sweeping plate 30 during the movement. This contact state can be achieved by adjusting the connection structure to preset an appropriate gap or by applying elastic clamping force, which can ensure the cleaning effect while avoiding excessive friction that could damage the conveyor belt or increase energy consumption.

[0016] The arrangement of the coal sweeping plate 30, with its left side higher and its right side lower, gives it an overall inclined posture that gradually descends from left to right. This design allows the scraped coal to slide naturally into the crusher 20 under the influence of gravity, preventing it from accumulating and clogging on top of the coal sweeping plate 30, thus ensuring the reliability of continuous operation.

[0017] The top surface of the coal sweeping plate 30 is a smooth, sloping surface that directly receives material scraped off the conveyor belt, thus requiring a low coefficient of friction and good flowability. Processing the top surface into a smooth curved surface or polishing it further reduces the risk of material retention. This sloping surface, along with the overall inclination direction of the coal sweeping plate, forms a channel guiding the material downwards, improving discharge efficiency.

[0018] The right side of the coal sweeping plate 30 is connected to the side plate of the crusher 20 via the connecting plate 80, indicating that the two are not directly welded or integrally formed, but are detachably connected by the intermediate transition plate 80.

[0019] The connecting plate 80 is bolted to the inside of the crusher 20, demonstrating the detachable nature of this connection method. The bolted connection facilitates later maintenance, replacement of the coal sweeping plate 30, or adjustment of the installation height, and also allows for flexible adaptation to different crusher models or site layouts.

[0020] When the belt 10 is running in a cycle driven by the drive drum, the residual coal or impurities carried at the bottom of its return section travel to the area where the coal sweeping plate 30 is located. Because the right end of the coal sweeping plate 30 is low and close to the bottom surface of the belt, it forms a physical obstruction, forcing the material to detach from the belt. Subsequently, these materials slide down the smooth slope at the top of the coal sweeping plate 30 into the recovery device below. The whole process does not require manual intervention and the cleaning action is completed automatically.

[0021] In one embodiment, side baffles 70 are provided on both sides of the coal sweeping plate 30. The two side baffles 70 form a structure that restricts the lateral movement of the coal flow, effectively improving the sealing of the coal sweeping area and preventing the scraped coal particles or debris from escaping from the side of the coal sweeping plate, thereby improving the material collection efficiency and cleaning cleanliness.

[0022] The side baffle 70 can be directly fixed to the side edge of the coal sweeping plate 30 by welding, achieving a firm connection and good sealing performance; alternatively, it can be assembled using bolts, facilitating later disassembly, replacement, or maintenance. When using bolts, through holes are machined at corresponding positions on the side edge of the coal sweeping plate 30 and the side baffle 70, and high-strength bolts are used for fastening. This ensures connection reliability and allows for individual replacement of the side baffle 70 on one side based on wear conditions, extending the overall service life of the device. Furthermore, the inner surface of the side baffle 70 can be designed as a smoothly transitioned curved surface or rounded, reducing the risk of coal dust accumulation and blockage, making it particularly suitable for high-humidity or sticky coal environments.

[0023] Preferably, a column 40 is provided in the gap between the belt 10 and the crusher 20, and the top of the column 40 is connected to the bottom of the coal sweeping plate 30 by a spring 50.

[0024] To address the wear and tear on the coal sweeping plate caused by continuous contact with the moving belt during long-term operation, and to cope with the unstable contact pressure caused by equipment vibration, belt jump, or uneven thickness in underground working conditions, a support structure with elastic adjustment capability is proposed. By adding a column 40 in the gap area between the belt 10 and the crusher 20, and using a spring 50 to achieve a flexible connection between the bottom of the coal sweeping plate 30 and the top of the column 40, the coal sweeping plate 30 can maintain effective contact with the lower surface of the belt 10 while possessing a certain degree of dynamic adaptability.

[0025] The column 40, as the main vertical support component, is located in the gap between the belt 10 and the crusher 20, and its function is to provide a stable installation reference point for the coal sweeping plate 30. The spring 50 is located at the top of the column 40 and connected to the bottom of the coal sweeping plate 30, and is used to provide a controllable preload in the vertical direction and allow the coal sweeping plate to produce limited displacement.

[0026] The bottom of the coal sweeping plate 30 is provided with a connecting structure for connecting the spring 50, such as a perforated lug plate or a threaded sleeve welded on. The upper end of the spring 50 is hooked or pressed into this structure to achieve a reliable mechanical connection. The top of the column 40 is equipped with a support platform or limiting structure to position the lower end of the spring 50 and prevent it from shifting or coming off during operation.

[0027] like Figure 3 As shown, a vertical guide post 60 is provided at the top of the column 40; the height of the guide post 60 is less than the distance between the column 40 and the coal sweeping plate 30; the guide post 60 passes through the inside of the spring 50.

[0028] By adding a vertical guide column 60 to the top of the column 40 and placing it inside the spring 50, precise guidance of the vertical movement of the coal sweeping plate is achieved. Among them, the guide column 60, as a key guiding component, is fixed to the top of the column 40 in the vertical direction, and its axis coincides with the center line of the column, ensuring the centering of the overall structure.

[0029] The length design of the guide column 60 has specific requirements: its height must be less than the initial distance between the top of the column 40 and the bottom of the coal sweeping plate 30, so as to reserve sufficient room for movement when the coal sweeping plate is compressed and moved downward, avoiding rigid contact or jamming between the guide column and the coal sweeping plate. This dimensional relationship ensures the free deformation capability of the spring 50 throughout the compression and rebound process, while preventing structural damage or functional failure due to limited stroke.

[0030] As an alternative implementation, the guide post 60 can also adopt a square cross-section column structure. Correspondingly, the spring 50 needs to be designed with a square through hole to achieve the anti-rotation function and further improve the guiding accuracy.

[0031] This embodiment of the invention establishes a hinged connection between the connecting plate 80 and the coal sweeping plate 30, allowing the coal sweeping plate 30 to rotate freely around the hinge point relative to the connecting plate 80. This structural design allows the coal sweeping plate 30 to be angled according to actual working conditions during installation or operation, thereby improving the fit accuracy between it and the lower surface of the belt 10, enhancing the coal scraping effect, and improving the adaptability of the device to different installation conditions.

[0032] A hinge is a connection between two components via a pin, shaft, or other mechanical structure that allows relative rotation, enabling them to rotate relative to each other within a certain range. In this embodiment, the upper end of the connecting plate 80 is connected to the coal sweeping plate 30 via a hinge structure.

Claims

1. A coal sweeper for the belt conveyor head of a crusher used in a fully mechanized mining face, characterized in that, Including the coal sweeping plate (30); The right side of the coal sweeping plate (30) is connected to the crusher (20), and the right side of the coal sweeping plate (30) is attached to the lower part of the conveyor belt (10) used for transporting coal, so as to scrape off the coal or debris remaining on the conveyor belt (10). The coal sweeping plate (30) is higher on the left and lower on the right, and its top surface is a smooth, inclined slope. The right side of the coal sweeping plate (30) is connected to the side plate of the crusher (20) via a connecting plate (80), and the connecting plate (80) is bolted to the inside of the crusher (20).

2. The coal sweeper for the belt conveyor head of a crusher used in a fully mechanized mining face as described in claim 1, characterized in that, Side baffles (70) are provided on both sides of the coal sweeping plate (30).

3. A coal sweeper for the belt conveyor head of a crusher used in a fully mechanized mining face as described in claim 2, characterized in that, A column (40) is provided in the gap between the belt (10) and the crusher (20), and the top of the column (40) is connected to the bottom of the coal sweeping plate (30) by a spring (50).

4. A coal sweeper for the belt conveyor head of a crusher used in a fully mechanized mining face as described in claim 3, characterized in that, The top of the column (40) is provided with a vertical guide column (60); the height of the guide column (60) is less than the distance between the column (40) and the coal sweeping plate (30); The guide post (60) passes through the inside of the spring (50).

5. A coal sweeper for the belt conveyor head of a crusher used in a fully mechanized mining face as described in claim 4, characterized in that, The connecting plate (80) is hinged to the coal sweeping plate (30).

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