A scraper conveyor anti-slip device

Abstract

This invention relates to an anti-slip device for scraper conveyors, belonging to the field of scraper conveyors. This invention solves the technical problem of existing scraper conveyors, which use chain-connected anti-slip methods, easily sliding downwards along the coal seam's inclination during the pushing process, resulting in slippage and reduced production efficiency. A sleeve is fixedly installed on the lower left side of a fixed plate. Anti-slip spikes are slidably installed inside the sleeve. One end of a spring is connected to the right end face of the anti-slip spike, and the other end is connected to the fixed plate. The spring is in a compressed state and exerts a leftward elastic force on the anti-slip spike. A positioning port is provided at the top of the sleeve, and a positioning groove is provided at the top of the anti-slip spike. A positioning pin simultaneously passes through the positioning port and the positioning groove to fix the anti-slip spike. The fixed plate of the anti-slip mechanism is installed on the outer wall of the coal shovel side of the middle trough of the scraper conveyor. The anti-slip spikes are always pressed against the working face by the spring force, preventing slippage during the pushing process. This invention is used for scraper conveyors.

Description

Technical Field

[0001] This utility model relates to an anti-slip device for scraper conveyors, belonging to the field of scraper conveyors. Background Technology

[0002] In a fully mechanized coal mining face, the coal mining machine, hydraulic support, and scraper conveyor need to work together. The scraper conveyor is also called a chute. After the coal mining machine rides on the scraper conveyor to complete the coal cutting, the hydraulic support pushes the chute. After pushing the chute, the hydraulic support is moved to continue cutting, transporting and unloading coal.

[0003] The conveying angle of a scraper conveyor is generally no more than 20 degrees. When the angle of the coal seam is too large, the scraper conveyor should be equipped with an anti-slip device. Existing anti-slip devices mostly use flexible chain devices to connect the anti-slip ears of the scraper conveyor to the hydraulic support. Due to the flexible anti-slip connection method, the scraper conveyor is prone to sliding down along the angle of the coal seam during the pushing process, resulting in slippage and affecting production efficiency. In addition, when the angle of the coal seam is too large, the scraper conveyor is prone to slippage, affecting production safety.

[0004] In summary, existing scraper conveyors, due to their chain-connected anti-slip method, are prone to sliding downwards along the dip angle of the coal seam during the pushing process, resulting in slippage and reduced production efficiency. Utility Model Content

[0005] This invention addresses the technical problem that existing scraper conveyors, which use chain-connected anti-slip methods, tend to slide downwards along the coal seam's inclination during the conveying process, leading to slippage and reduced production efficiency. Therefore, this invention proposes an anti-slip device for scraper conveyors.

[0006] The technical solution of this utility model is an anti-slip device for a scraper conveyor, including an anti-slip mechanism and a central trough of the scraper conveyor. The anti-slip mechanism includes a fixed plate, a sleeve, a spring, an anti-slip spike, and a positioning pin. The sleeve is fixedly installed on the lower left side of the fixed plate, and the anti-slip spike is slidably installed inside the sleeve. One end of the spring is connected to the right end face of the anti-slip spike, and the other end of the spring is connected to the fixed plate. The spring is in a compressed state and generates a leftward elastic force on the anti-slip spike. A positioning port is provided at the top of the sleeve, and a positioning groove is provided at the top of the anti-slip spike. The positioning pin passes through both the positioning port and the positioning groove to fix the anti-slip spike.

[0007] The scraper conveyor's central trough includes a coal shovel side, a baffle side, a middle plate, and a bottom plate. The middle plate is horizontally fixed in the middle between the coal shovel side and the baffle side, and the bottom plate is horizontally fixed at the bottom between the coal shovel side and the baffle side. The fixing plate of the anti-slip mechanism is installed on the outer wall of the coal shovel side.

[0008] As another improvement of this utility model, the head of the anti-slip spike is conical and the tail of the anti-slip spike is cylindrical.

[0009] As another improvement of this utility model, the head of the anti-slip spike is frustum-shaped and the tail of the anti-slip spike is cylindrical.

[0010] As another improvement of this utility model, a telescopic tube is slidably arranged inside the sleeve, the outer wall of the telescopic tube and the inner wall of the sleeve form a clearance fit, the outer wall of the anti-slip spike and the inner wall of the telescopic tube form a clearance fit, and a positioning hole is provided at the top of the telescopic tube. The positioning pin is inserted into the positioning port, the positioning hole and the positioning groove at the same time to fix the anti-slip spike.

[0011] As another improvement of this utility model, a limiting plate is provided at the right end of the telescopic tube and the left end of the sleeve to restrict the leftward displacement of the telescopic tube.

[0012] As another improvement of this utility model, the scraper conveyor's central trough further includes a pusher ear plate, a hydraulic lifting column is installed at the bottom of the pusher ear plate, and anti-slip teeth are provided on the bottom surface of the hydraulic lifting column.

[0013] As another improvement of this utility model, the anti-slip teeth are evenly arranged along the bottom surface of the hydraulic lifting column, and the number of anti-slip teeth ranges from 4 to 16.

[0014] As another improvement of this utility model, the middle trough of the scraper conveyor also includes a coal shovel plate, which is horizontally arranged at the bottom left side of the coal trough side.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model adopts an anti-slip mechanism combined with the middle trough of the scraper conveyor. The anti-slip mechanism is equipped with a sleeve, spring, anti-slip spikes and positioning pins. The spring applies a continuous elastic force to the anti-slip spikes. After the anti-slip spikes extend out of the sleeve, they press against the working face. When the coal mining machine completes a set of coal cutting processes and is ready to push the conveyor, the middle trough of the scraper conveyor advances along the direction in which the anti-slip spikes extend. Because the anti-slip spikes are always pressed against the working face by the elastic force of the spring, the middle trough of the scraper conveyor will not slide down due to excessive transport inclination angle. There will be no slippage during the pushing process, which improves production efficiency and the safety of the scraper conveyor.

[0017] 2. The anti-slip mechanism of this utility model uses an anti-slip sleeve to press against the working surface after it is inserted, which plays a guiding role in the pushing process, making the pushing trajectory accurate, the process smooth, and improving production efficiency.

[0018] 3. This utility model provides anti-slip teeth on the lower part of the pusher ear plate in the middle trough of the scraper conveyor to prevent the scraper conveyor from sliding due to excessive transport angle during transportation, thereby improving the safety and reliability of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first structure of an anti-slip device for a scraper conveyor according to the present invention.

[0020] Figure 2 This is a schematic diagram of the second structure of an anti-slip device for a scraper conveyor according to the present invention.

[0021] Figure 3 yes Figure 2 Cross-sectional view at point AA.

[0022] Figure 4 This is a schematic diagram of the first structure of the anti-slip spike.

[0023] Figure 5 This is a schematic diagram of the second structure of the anti-slip spikes. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating positional relationships are only based on the positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model, and do not indicate or imply that the referred component has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Specific implementation method one: Combining Figure 1 and Figure 2 This embodiment describes an anti-slip mechanism 1 and a central trough 2 of a scraper conveyor. The anti-slip mechanism 1 includes a fixed plate 1-1, a sleeve 1-2, a spring 1-3, an anti-slip spike 1-4, and a positioning pin 1-5. The sleeve 1-2 is fixedly installed on the lower left side of the fixed plate 1-1. The anti-slip spike 1-4 is slidably installed inside the sleeve 1-2. One end of the spring 1-3 is connected to the right end face of the anti-slip spike 1-4, and the other end of the spring 1-3 is connected to the fixed plate 1-1. The spring 1-3 is in a compressed state and generates a leftward elastic force on the anti-slip spike 1-4. A positioning port is provided at the top of the sleeve 1-2, and a positioning groove is provided at the top of the anti-slip spike 1-4. The positioning pin 1-5 passes through both the positioning port and the positioning groove to fix the anti-slip spike 1-4.

[0026] The scraper conveyor's middle trough 2 includes a coal shovel side 2-1, a baffle side 2-2, a middle plate 2-3, and a bottom plate 2-4. The middle plate 2-3 is horizontally fixed in the middle between the coal shovel side 2-1 and the baffle side 2-2, and the bottom plate 2-4 is horizontally fixed at the bottom between the coal shovel side 2-1 and the baffle side 2-2. The fixing plate 1-1 of the anti-slip mechanism 1 is installed on the outer side wall of the coal shovel side 2-1.

[0027] When the conveyor of a fully mechanized longwall face has a large inclination angle, after the coal mining machine cuts a set of coal, it needs to perform the push-conveyor and support-shifting processes. Before pushing the conveyor, the positioning pin is pulled out, and a continuous elastic force is applied to the anti-slip spikes by a spring. After the anti-slip spikes extend from the sleeve, they press against the working face. The hydraulic support pushes the middle trough of the scraper conveyor along the direction of the anti-slip spikes. Because the anti-slip spikes are always pressed against the working face by the spring force, the middle trough of the scraper conveyor will not slide down due to the large inclination angle, and there will be no slippage during the push-conveyor and support-shifting process. After the support-shifting is completed, the anti-slip spikes are pushed back into the sleeve by the working face, and the sleeve continues to press against the working face after inserting the positioning pin. There will be no slippage during the entire push-conveyor and support-shifting process. The anti-slip mechanism can be directly installed on the existing middle trough of the scraper conveyor, saving manufacturing costs and improving production efficiency. The insertion and removal of the positioning pin can be controlled remotely and automatically by using a lead screw and servo motor.

[0028] Specific Implementation Method Two: Combining Figure 1 , Figure 2 and Figure 4 This embodiment differs from Specific Embodiment 1 in that the head of the anti-slip spikes 1-4 is conical, while the tail is cylindrical. The conical head of the anti-slip spikes allows them to penetrate the working surface more effectively, providing better anti-slip performance when facing steeply inclined surfaces. Other components and connections are the same as in Specific Embodiment 1.

[0029] Specific implementation method three: Combining Figure 1 , Figure 2 and Figure 5 This embodiment differs from specific embodiment one in that the head of the anti-slip spikes 1-4 is frustum-shaped, and the tail is cylindrical. Using a frustum-shaped head simplifies the manufacturing process and enhances the reliability and service life of the anti-slip spikes. Other components and connection methods are the same as in specific embodiment one or two.

[0030] Specific implementation method four: Combination Figure 2This embodiment differs from specific embodiment one in that a telescopic tube 1-7 is slidably disposed inside the sleeve 1-2. The outer wall of the telescopic tube 1-7 forms a clearance fit with the inner wall of the sleeve 1-2, and the outer wall of the anti-slip spike 1-4 forms a clearance fit with the inner wall of the telescopic tube 1-7. A positioning hole is provided at the top of the telescopic tube 1-7, and a positioning pin 1-5 simultaneously passes through the positioning port, positioning hole, and positioning groove to fix the anti-slip spike 1-4. The addition of the telescopic tube increases the displacement dimension of the anti-slip mechanism, making it applicable to more coal mining machine feed sizes. Other components and connection methods are the same as any one of specific embodiments one to three.

[0031] Specific Implementation Method Five: Combining Figure 2 and Figure 3 This embodiment differs from specific embodiment one in that both the right end of the telescopic tube 1-7 and the left end of the sleeve 1-2 are fitted with limiting plates 1-6, which restrict the leftward displacement of the telescopic tube 1-7. Other components and connection methods are the same as any one of specific embodiments one to four.

[0032] Specific Implementation Method Six: Combination Figure 2 and Figure 3 This embodiment differs from specific embodiment one in that the central trough 2 of the scraper conveyor also includes a pusher ear plate 2-5. A hydraulic lifting column 2-6 is installed at the bottom of the pusher ear plate 2-5, and the bottom surface of the hydraulic lifting column 2-6 is provided with anti-slip teeth 2-7. This prevents the scraper conveyor from slipping due to excessive transport angle during transportation, improving the safety and reliability of the device. Other components and connection methods are the same as any one of specific embodiments one to five.

[0033] Specific implementation method seven: Combining Figure 1 and Figure 2 This embodiment differs from specific embodiment one in that the anti-slip teeth 2-7 are evenly arranged along the bottom surface of the hydraulic lifting column 2-6, and the number of anti-slip teeth 2-7 ranges from 4 to 16. Other components and connection methods are the same as any one of specific embodiments one to six.

[0034] Specific implementation method eight: Combination Figure 1 and Figure 2 This embodiment differs from specific embodiment one in that the middle trough 2 of the scraper conveyor also includes a coal shovel plate, which is horizontally positioned at the bottom left side of the coal shovel trough side 2-1. Other components and connection methods are the same as any one of specific embodiments one through seven.

[0035] Combination Figures 1 to 5 Explanation of the working principle of this utility model:

[0036] After the coal mining machine finishes cutting a set of coal, the conveyor pushing and support shifting processes are required. Before pushing the conveyor, the positioning pin is pulled out, and a continuous elastic force is applied to the anti-slip spikes by a spring. After the anti-slip spikes extend from the sleeve, they press against the working face. The hydraulic support pushes the middle trough of the scraper conveyor along the direction of the anti-slip spikes. Because the anti-slip spikes are always pressed against the working face by the spring force, the middle trough of the scraper conveyor will not slide down due to excessive transport angle, and there will be no slippage during the conveyor pushing and support shifting process. After the support shifting is completed, the anti-slip spikes are pushed back into the sleeve by the working face, and the sleeve continues to press against the working face after being inserted into the positioning pin. There will be no slippage during the entire conveyor pushing and support shifting process. The anti-slip mechanism can be directly installed on the existing middle trough of the scraper conveyor.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flight conveyor anti-slip device, characterized in that It includes an anti-slip mechanism (1) and a scraper conveyor trough (2). The anti-slip mechanism (1) includes a fixed plate (1-1), a sleeve (1-2), a spring (1-3), an anti-slip spike (1-4), and a positioning pin (1-5). The sleeve (1-2) is fixedly installed on the lower left side of the fixed plate (1-1). The anti-slip spike (1-4) is slidably installed inside the sleeve (1-2). One end of the spring (1-3) is connected to the right end face of the anti-slip spike (1-4), and the other end of the spring (1-3) is connected to the fixed plate (1-1). The spring (1-3) is in a compressed state and the spring (1-3) generates a leftward elastic force on the anti-slip spike (1-4). The top of the sleeve (1-2) is provided with a positioning port, and the top of the anti-slip spike (1-4) is provided with a positioning groove. The positioning pin (1-5) passes through both the positioning port and the positioning groove to fix the anti-slip spike (1-4). The scraper conveyor middle trough (2) includes a coal shovel side (2-1), a baffle side (2-2), a middle plate (2-3), and a bottom plate (2-4). The middle plate (2-3) is horizontally fixed in the middle between the coal shovel side (2-1) and the baffle side (2-2). The bottom plate (2-4) is horizontally fixed at the bottom between the coal shovel side (2-1) and the baffle side (2-2). The fixing plate (1-1) of the anti-slip mechanism (1) is installed on the outer wall of the coal shovel side (2-1).

2. A flight conveyor anti-slip device according to claim 1, characterised in that The head of the anti-slip spike (1-4) is conical, and the tail of the anti-slip spike (1-4) is cylindrical.

3. A flight conveyor anti-slip device according to claim 1, wherein The head of the anti-slip spike (1-4) is frustum-shaped, and the tail of the anti-slip spike (1-4) is cylindrical.

4. A flight conveyor anti-slip device according to any one of claims 1 to 3, characterised in that, A telescopic tube (1-7) is slidably installed inside the sleeve (1-2). The outer wall of the telescopic tube (1-7) and the inner wall of the sleeve (1-2) form a clearance fit. The outer wall of the anti-slip spike (1-4) and the inner wall of the telescopic tube (1-7) form a clearance fit. A positioning hole is provided at the top of the telescopic tube (1-7). The positioning pin (1-5) is inserted into the positioning port, the positioning hole and the positioning groove to fix the anti-slip spike (1-4).

5. A flight conveyor anti-slip device according to claim 4, wherein, Limiting plates (1-6) are provided at the right end of the telescopic tube (1-7) and the left end of the sleeve (1-2) to restrict the leftward displacement of the telescopic tube (1-7) through the cooperation of the limiting plates (1-6).

6. A flight conveyor anti-slip device according to any one of claims 1 to 3, wherein The scraper conveyor's middle trough (2) also includes a pusher ear plate (2-5), and a hydraulic lifting column (2-6) is installed at the bottom of the pusher ear plate (2-5). The bottom surface of the hydraulic lifting column (2-6) is provided with anti-slip teeth (2-7).

7. A flight conveyor anti-slip device according to claim 6, wherein, Anti-slip teeth (2-7) are evenly arranged along the bottom surface of the hydraulic lifting column (2-6), and the number of anti-slip teeth (2-7) ranges from 4 to 16.

8. A flight conveyor anti-slip device according to claim 1, wherein, The scraper conveyor's middle trough (2) also includes a coal shovel plate, which is horizontally set at the bottom left side of the coal shovel trough side (2-1).

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