A scraper conveyor for coal mines

Abstract

This utility model discloses a scraper conveyor for coal mines, relating to the technical field of scraper conveyors. It includes a frame, with a discharge hopper and a drive mechanism fixedly installed on the side of the frame. A chain plate mechanism is rotatably installed inside the frame, driven by the drive mechanism. A cleaning unit, a pushing unit, and a monitoring unit are fixedly installed at the end of the frame near the discharge hopper. The beneficial effect lies in the fact that the buffer assembly allows the first brush roller mechanism to automatically conform to the shape of the chain, increasing the force applied by the first brush roller mechanism to the chain, ensuring effective chain cleaning. The brush bristles on the first and second brush roller mechanisms clean floating materials, while the scraper teeth clean stubborn, adhered materials, effectively improving the cleaning effect on the chain in the chain plate mechanism. This prevents jamming between the chain and sprockets due to accumulated material, ensuring the stability and efficiency of material conveying by the chain plate mechanism, and extending the service life of the chain and sprockets.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveyor technology, and in particular to a scraper conveyor for coal mines. Background Technology

[0002] Coal is a commonly used and important energy source. A coal mine is a place rich in coal resources. During the mining process, scraper conveyors are used to transport the mined coal to designated locations.

[0003] A search revealed that Chinese patent application CN219750852U discloses a scraper conveyor for coal mines, which mainly uses inclined guide plates and buffer springs to buffer the coal.

[0004] Compared with existing technologies in related fields, it is known that coal sludge will accumulate on the chain for conveying materials after long-term operation. Due to the shaking during the movement of the chain, the hardened coal sludge on the side and gap of the chain cannot be effectively cleaned, which increases the friction between the chain and the sprocket and the frame, affecting the conveying efficiency and the service life of the chain. Utility Model Content

[0005] The purpose of this utility model is to provide a scraper conveyor for coal mines in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions: A scraper conveyor for coal mines includes a frame, a discharge hopper and a drive mechanism fixedly installed on the side of the frame, a chain plate mechanism for conveying materials rotatably installed inside the frame, the chain plate mechanism being driven by the drive mechanism, and a cleaning unit, a pushing unit and a monitoring unit fixedly installed at the end of the frame near the discharge hopper. The cleaning unit includes a mounting frame and a first bracket. The mounting frame is fixedly installed on both sides inside the frame. A first hydraulic telescopic mechanism is fixedly installed on the mounting frame. A mounting plate is fixedly installed on the telescopic end of the first hydraulic telescopic mechanism. A buffer assembly is fixedly installed on the mounting plate. The first bracket is fixedly installed on the buffer assembly. A motor is fixedly installed on the first bracket. A gear set and a first brush roller mechanism are fixedly installed on the output shaft of the motor. The first brush roller mechanism is rotatably installed on the first bracket. A second bracket is fixedly installed on the housing of the first brush roller mechanism. A second brush roller mechanism is fixedly installed on the second bracket. The rotating shaft of the second brush roller mechanism is fixedly connected to the gear set. The first bracket and the second bracket are arranged perpendicular to each other. Both the first brush roller mechanism and the second brush roller mechanism are a combination structure of double-layer bristles and scraping teeth.

[0007] Furthermore, the buffer assembly includes a first pressure detection mechanism, which is fixedly mounted on the mounting plate. A disc spring assembly is fixedly mounted on the first pressure detection mechanism, and the disc spring assembly is fixedly connected to the first bracket.

[0008] Furthermore, a distance measuring sensor is fixedly mounted on the mounting plate.

[0009] Furthermore, an elastic protective cover is fixedly installed on the mounting plate and the first bracket, and the elastic protective cover is sleeved on the first pressure detection mechanism and the disc spring assembly.

[0010] Furthermore, the pushing unit includes a second hydraulic telescopic mechanism, which is fixedly installed on both sides inside the frame and located outside the chain plate mechanism. A push plate is fixedly installed on the telescopic end of the second hydraulic telescopic mechanism, and the push plate is slidably connected to the frame.

[0011] Furthermore, the monitoring unit includes a placement frame, which is fixedly installed on the frame. The placement frame is located near the connection between the chain in the chain plate mechanism and the sprocket in the drive mechanism. A second pressure detection mechanism is fixedly installed on the placement frame. An elastic element is fixedly installed on the second pressure detection mechanism. A stop bar is fixedly installed on the elastic element. The stop bar is slidably connected to the frame.

[0012] Furthermore, inclined guide plates are fixedly installed on both sides of the upper surface of the frame, and the guide plates are located above the chain plate mechanism.

[0013] The advantages compared to existing technologies are as follows: 1. The buffer assembly enables the first brush roller mechanism to automatically conform to the shape of the chain, increasing the force applied by the first brush roller mechanism to the chain and ensuring the cleaning effect on the chain. The brush bristles on the first and second brush roller mechanisms clean up floating materials, and the scraper teeth clean up stubborn adhered materials, thereby effectively improving the cleaning effect on the chain in the chain plate mechanism, preventing the chain and sprocket from jamming due to the accumulation of adhered materials, ensuring the stability and efficiency of the chain plate mechanism for material conveying, and extending the service life of the chain and sprocket.

[0014] 2. The material between the chain and sprocket is detected by the stop bar, elastic element and second pressure detection mechanism, and the material between the chain and sprocket is pushed out by the second hydraulic telescopic mechanism and push plate to prevent the conveyed material from entering between the chain and sprocket and causing jamming, reduce downtime waiting for cleaning, and improve the efficiency and safety of material conveying. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a partial cross-sectional structural schematic diagram of a scraper conveyor for coal mines according to the present invention; Figure 2 This utility model describes a scraper conveyor for coal mines. Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This utility model describes a scraper conveyor for coal mines. Figure 1 Enlarged structural diagram at point B; Figure 4 This is a schematic diagram of the cross-sectional connection structure of the mounting plate, first support, and elastic protective cover of a scraper conveyor for coal mines according to the present invention. Figure 5 This is a schematic diagram of the overall structure of a scraper conveyor for coal mines according to the present invention; Figure 6 This utility model describes a scraper conveyor for coal mines. Figure 5 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the placement frame and stop bar connection structure of a scraper conveyor for coal mines according to the present invention.

[0017] The annotations in the attached figures are explained as follows: 1. Frame; 2. Chain plate mechanism; 301. Mounting frame; 302. First hydraulic telescopic mechanism; 303. Mounting plate; 304. Distance sensor; 305. First pressure detection mechanism; 306. Disc spring assembly; 307. Elastic protective cover; 308. First bracket; 309. First brush roller mechanism; 310. Motor; 311. Gear set; 312. Second bracket; 313. Second brush roller mechanism; 401. Second hydraulic telescopic mechanism; 402. Push plate; 501. Placement frame; 502. Second pressure detection mechanism; 503. Elastic element; 504. Stop bar; 6. Discharge hopper; 7. Guide plate; 8. Drive mechanism. Detailed Implementation

[0018] like Figures 1-7As shown, a scraper conveyor for coal mines includes a frame 1. A discharge hopper 6 and a drive mechanism 8 are fixedly installed on the side of the frame 1. A chain plate mechanism 2 for conveying materials is rotatably installed inside the frame 1. The chain plate mechanism 2 is driven by the drive mechanism 8. A cleaning unit, a pushing unit, and a monitoring unit are fixedly installed at the end of the frame 1 near the discharge hopper 6. The drive mechanism 8 operates using existing technology. When materials are placed on the frame 1, the drive mechanism 8 drives the chain plate mechanism 2 to rotate, which in turn moves the materials on the frame 1 to the discharge hopper 6 for discharge. During the conveying process, the cleaning unit cleans the chain in the chain plate mechanism 2 to reduce material accumulation on the chain and prevent the chain in the chain plate mechanism 2 and the chain in the drive mechanism 8 from jamming due to accumulated material. The monitoring unit monitors the material between the chain and the sprocket. When material appears between the chain and the sprocket, the pushing unit pushes the material out to prevent jamming of the chain and the sprocket. like Figure 1 , Figure 2 , Figure 4 , Figure 6As shown, the cleaning unit includes a mounting frame 301 and a first bracket 308. The mounting frame 301 is fixedly installed on both sides inside the frame 1. A first hydraulic telescopic mechanism 302 is fixedly installed on the mounting frame 301. A mounting plate 303 is fixedly installed on the telescopic end of the first hydraulic telescopic mechanism 302. A buffer assembly is fixedly installed on the mounting plate 303. The first bracket 308 is fixedly installed on the buffer assembly. A motor 310 is fixedly installed on the first bracket 308. A gear set 311 and a first brush roller mechanism 309 are fixedly installed on the output shaft of the motor 310. The first brush roller mechanism 309 is rotatably mounted on the first bracket 308. A second bracket 312 is fixedly installed on the housing of the first brush roller mechanism 309. A second brush roller mechanism 313 is fixedly mounted on the bracket 312. The rotating shaft of the second brush roller mechanism 313 is fixedly connected to the gear set 311. The first bracket 308 and the second bracket 312 are arranged perpendicularly to each other. Both the first brush roller mechanism 309 and the second brush roller mechanism 313 are combinations of double-layer brush bristles and scraping teeth. The first hydraulic telescopic mechanism 302, the motor 310, and the gear set 311 operate using existing technology. During the process of conveying materials on the frame 1 by the chain plate mechanism 2, the first hydraulic telescopic mechanism 302 drives the mounting plate 303 to move. The mounting plate 303 drives the first bracket 308 to move through the buffer assembly. The first bracket 308 drives the first brush roller mechanism 309 and the gear set 311 to move. The gear set 311 drives the second brush roller mechanism 313 to move via the second bracket 312, adjusting the height of the first brush roller mechanism 309 and the second brush roller mechanism 313. The first brush roller mechanism 309 is attached to the upper surface of the chain in the chain plate mechanism 2, and the second brush roller mechanism 313 is attached to the side of the chain in the chain plate mechanism 2. The motor 310 drives the first brush roller mechanism 309 to rotate, and at the same time, the motor 310 drives the second brush roller mechanism 313 to rotate via the gear set 311. The first brush roller mechanism 309 cleans the upper surface of the chain, and the second brush roller mechanism 313 cleans the side of the chain. When the first brush roller mechanism 309 and the second brush roller mechanism 313 clean the chain, the first brush roller mechanism 309 and the second brush roller mechanism 313 clean the chain. The brushes on the first brush roller mechanism 309 and the second brush roller mechanism 313 clean the floating material, and the scraper teeth clean the stubborn material, thereby effectively improving the cleaning effect on the chain in the chain plate mechanism 2. This prevents the chain and sprocket from jamming due to the accumulation of material, ensuring the stability and efficiency of the chain plate mechanism 2 in material conveying, and extending the service life of the chain and sprocket. When the first brush roller mechanism 309 and the second brush roller mechanism 313 clean the chain, the first bracket 308 is elastically supported by the buffer component, so that the first brush roller mechanism 309 can effectively fit onto the chain. It can effectively clean according to the shape of the chain, which can not only ensure the cleaning effect, but also prevent the scraper teeth from jamming with the chain, thus improving safety.

[0019] like Figure 4As shown, the buffer assembly includes a first pressure detection mechanism 305, which is fixedly mounted on a mounting plate 303. A disc spring assembly 306 is fixedly mounted on the first pressure detection mechanism 305, and the disc spring assembly 306 is fixedly connected to a first bracket 308. The first pressure detection mechanism 305 and the disc spring assembly 306 operate using existing technology. The disc spring assembly 306 prevents damage caused by hard contact between the teeth of the first brush roller mechanism 309 and the second brush roller mechanism 313 and the chain. Furthermore, the disc spring assembly 306 allows the first brush roller mechanism 309 to automatically conform to the shape of the chain, increasing... The first brush roller mechanism 309 applies force to the chain to ensure the cleaning effect on the chain. When the first brush roller mechanism 309 and the second brush roller mechanism 313 clean the chain, the first pressure detection mechanism 305 detects the force applied to the chain by the first brush roller mechanism 309 and the second brush roller mechanism 313. Based on the detection value of the first pressure detection mechanism 305, the height of the first brush roller mechanism 309 and the second brush roller mechanism 313 is adjusted to ensure the cleaning effect on the chain in the chain plate mechanism 2 and to avoid affecting the normal operation of the chain plate mechanism 2.

[0020] like Figure 2 As shown, a distance sensor 304 is fixedly installed on the mounting plate 303. The distance sensor 304 operates using existing technology. The distance sensor 304 detects the distance between the chain plate mechanism 2 and the cleaning unit, which facilitates the adjustment of the height of the first brush roller mechanism 309 and the second brush roller mechanism 313, so that the first brush roller mechanism 309 and the second brush roller mechanism 313 can effectively clean the chain.

[0021] like Figure 2 , Figure 4 As shown, an elastic protective cover 307 is fixedly installed on the mounting plate 303 and the first bracket 308. The elastic protective cover 307 is sleeved on the first pressure detection mechanism 305 and the disc spring assembly 306. The elastic protective cover 307 operates using existing technology. The elastic protective cover 307 shields and protects the first pressure detection mechanism 305 and the disc spring assembly 306, preventing materials from entering the disc spring assembly 306 and getting stuck, thus ensuring the normal operation of the disc spring assembly 306.

[0022] like Figure 3 , Figure 6As shown, the pushing unit includes a second hydraulic telescopic mechanism 401, which is fixedly installed on both sides inside the frame 1. The second hydraulic telescopic mechanism 401 is located outside the chain plate mechanism 2. A push plate 402 is fixedly installed on the telescopic end of the second hydraulic telescopic mechanism 401. The push plate 402 is slidably connected to the frame 1. The second hydraulic telescopic mechanism 401 operates using existing technology. During the material conveying process, the push plate 402 is moved by the second hydraulic telescopic mechanism 401. The push plate 402 pushes the material below the chain plate mechanism 2, preventing the conveyed material from entering between the chain and the sprocket and causing jamming, thereby improving the conveying efficiency.

[0023] like Figure 3 , Figure 7 As shown, the monitoring unit includes a placement frame 501, which is fixedly mounted on the frame 1. The placement frame 501 is located near the connection between the chain in the chain plate mechanism 2 and the sprocket in the drive mechanism 8. A second pressure detection mechanism 502 is fixedly mounted on the placement frame 501. An elastic element 503 is fixedly mounted on the second pressure detection mechanism 502. A stop bar 504 is fixedly mounted on the elastic element 503. The stop bar 504 is slidably connected to the frame 1 and the push plate 402. The second pressure detection mechanism 502 and the elastic element 503 operate using existing technology. The stop bar 504 and the sprocket are positioned correspondingly. During material conveying, the stop bar 504 blocks the front of the sprocket. Due to the traction of the chain in the chain plate mechanism 2 by the sprocket, the chain... There is an angle between the baffle 504 and the frame 1, so the baffle 504 will not affect the movement of the chain plate mechanism 2. When large particles slide on the frame 1 and enter between the chain and the sprocket, the large particles are squeezed by the baffle 504 against the elastic element 503, and the elastic element 503 is squeezed against the second pressure detection mechanism 502. According to the detection value of the second pressure detection mechanism 502, it is determined that the large particles are between the chain and the sprocket. Based on the detection result, the large particles are cleaned by the pushing unit, which reduces the jamming caused by the large particles on the chain and sprocket, reduces the downtime waiting for cleaning, and improves the efficiency and safety of material conveying. After the large particles are cleaned, the baffle 504 is reset by the elastic element 503.

[0024] like Figure 6 As shown, inclined guide plates 7 are fixedly installed on both sides of the upper surface of the frame 1. The guide plates 7 are located above the chain plate mechanism 2. During the material conveying process, the guide plates 7 guide the material driven by the chain plate mechanism 2, so that the material moves towards the middle position of the frame 1, avoiding the accumulation of conveyed material at the edge and the blockage of the chain plate mechanism 2, thereby reducing the uneven wear of the chain in the chain plate mechanism 2 on both sides and improving the stability and efficiency of the conveying process.

[0025] Working principle: such as Figure 1 , Figure 5 , Figure 6 As shown, the drive mechanism 8 drives the chain plate mechanism 2 to rotate, and the chain plate mechanism 2 drives the material on the frame 1 to move the material to the discharge hopper 6 for discharge. During the material conveying process, the guide plate 7 guides the material driven by the chain plate mechanism 2 to move the material towards the middle position of the frame 1, so as to avoid the material being conveyed accumulating at the edge and causing blockage of the chain plate mechanism 2, thus ensuring the efficiency of material conveying. like Figure 1 , Figure 2 , Figure 4 , Figure 6 As shown, the height of the chain plate mechanism 2 is detected by the distance sensor 304. The mounting plate 303 is moved by the first hydraulic telescopic mechanism 302. The mounting plate 303 moves the first bracket 308 by the first pressure detection mechanism 305 and the disc spring assembly 306. The first bracket 308 moves the first brush roller mechanism 309 and the gear assembly 311. The gear assembly 311 moves the second brush roller mechanism 313 by the second bracket 312. The height of the first brush roller mechanism 309 and the second brush roller mechanism 313 is adjusted. The first brush roller mechanism 309 is attached to the upper surface of the chain in the chain plate mechanism 2, and the second brush roller mechanism 313 is attached to the side of the chain in the chain plate mechanism 2. like Figure 1 , Figure 2 , Figure 4 , Figure 6 As shown, the motor 310 drives the second brush roller mechanism 313 to rotate through the gear set 311. The first brush roller mechanism 309 cleans the upper surface of the chain, the second brush roller mechanism 313 cleans the side of the chain, the brush bristles on the first brush roller mechanism 309 and the second brush roller mechanism 313 clean the floating material, and the scraping teeth on the first brush roller mechanism 309 and the second brush roller mechanism 313 clean the stubborn adhered material. like Figure 2 , Figure 4 As shown, when the first brush roller mechanism 309 and the second brush roller mechanism 313 clean the chain, the first pressure detection mechanism 305 detects the force applied to the chain by the first brush roller mechanism 309 and the second brush roller mechanism 313. Based on the detection value of the first pressure detection mechanism 305, the height of the first brush roller mechanism 309 and the second brush roller mechanism 313 is adjusted by the first hydraulic telescopic mechanism 302. This ensures the cleaning effect on the chain in the chain plate mechanism 2 and avoids affecting the normal operation of the chain plate mechanism 2. At the same time, such as Figure 3 , Figure 7As shown, during the material conveying process, the baffle 504 blocks the front of the sprocket. When large particles slide on the frame 1 and enter between the chain and the sprocket, the large particles are squeezed by the baffle 504 against the elastic element 503, and the elastic element 503 is squeezed against the second pressure detection mechanism 502. According to the detection value of the second pressure detection mechanism 502, it is determined that the large particles are present between the chain and the sprocket. like Figure 3 , Figure 6 , Figure 7 As shown, based on the detection results of the second pressure detection mechanism 502, the push plate 402 is moved by the second hydraulic telescopic mechanism 401. The push plate 402 pushes the material below the chain plate mechanism 2 to avoid the conveyed material from causing the chain and sprocket to jam, thus ensuring the normal conveying efficiency of the material.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A scraper conveyor for coal mines, characterized in that, Includes a frame (1), on the side of which a discharge hopper (6) and a drive mechanism (8) are installed. A chain plate mechanism (2) for conveying materials is rotatably installed inside the frame (1). The chain plate mechanism (2) is driven by the drive mechanism (8). A cleaning unit, a pushing unit and a monitoring unit are installed inside the frame (1) near the end of the discharge hopper (6). The cleaning unit includes a mounting frame (301) and a first bracket (308). The mounting frame (301) is installed on both sides inside the frame (1). A first hydraulic telescopic mechanism (302) is installed on the mounting frame (301). A mounting plate (303) is installed on the telescopic end of the first hydraulic telescopic mechanism (302). A buffer assembly is installed on the mounting plate (303). The first bracket (308) is installed on the buffer assembly. A motor (310) is installed on the first bracket (308). A gear set (311) is installed on the output shaft of the motor (310). The first brush roller mechanism (309) is rotatably mounted on the first bracket (308). A second bracket (312) is mounted on the housing of the first brush roller mechanism (309). A second brush roller mechanism (313) is mounted on the second bracket (312). The rotating shaft of the second brush roller mechanism (313) is connected to the gear set (311). The first bracket (308) and the second bracket (312) are arranged perpendicularly to each other. Both the first brush roller mechanism (309) and the second brush roller mechanism (313) are a combination structure of double-layer bristles and scraping teeth.

2. The scraper conveyor for coal mines according to claim 1, characterized in that: The buffer assembly includes a first pressure detection mechanism (305), which is mounted on the mounting plate (303). A disc spring assembly (306) is mounted on the first pressure detection mechanism (305), and the disc spring assembly (306) is connected to the first bracket (308).

3. A scraper conveyor for coal mines according to claim 2, characterized in that: A distance sensor (304) is mounted on the mounting plate (303).

4. A scraper conveyor for coal mines according to claim 2, characterized in that: An elastic protective cover (307) is installed on the mounting plate (303) and the first bracket (308), and the elastic protective cover (307) is sleeved on the first pressure detection mechanism (305) and the disc spring assembly (306).

5. A scraper conveyor for coal mines according to claim 1, characterized in that: The pushing unit includes a second hydraulic telescopic mechanism (401), which is installed on both sides inside the frame (1). The second hydraulic telescopic mechanism (401) is located outside the chain plate mechanism (2). A push plate (402) is installed on the telescopic end of the second hydraulic telescopic mechanism (401), and the push plate (402) is slidably connected to the frame (1).

6. A scraper conveyor for coal mines according to claim 1, characterized in that: The monitoring unit includes a placement frame (501), which is mounted on the frame (1). The placement frame (501) is located near the connection between the chain in the chain plate mechanism (2) and the sprocket in the drive mechanism (8). A second pressure detection mechanism (502) is mounted on the placement frame (501). An elastic element (503) is mounted on the second pressure detection mechanism (502). A stop bar (504) is mounted on the elastic element (503). The stop bar (504) is slidably connected to the frame (1).

7. A scraper conveyor for coal mines according to claim 1, characterized in that: Inclined guide plates (7) are installed on both sides of the upper surface of the frame (1), and the guide plates (7) are located above the chain plate mechanism (2).

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