Belt conveyor for coal conveying of opencast coal mine and using method of belt conveyor

Abstract

The invention discloses a belt conveyor for coal conveying of an opencast coal mine and a using method of the belt conveyor. The belt conveyor comprises a conveyor supporting frame, and a conveying belt is arranged on the conveyor supporting frame; a bottom plate is installed on one side of the conveyor supporting frame, a tensioning structure is connected to the upper portion of the bottom plate, a material receiving hopper and a first transmission wheel are connected to the tensioning structure, and a sweeping structure is connected to the interior of the material receiving hopper; the tensioning roller can be driven to extrude the conveying belt under the elastic action of the tensioning spring, so that the friction force between the conveying belt and the transmission part can be kept, the slipping phenomenon is prevented, the conveying belt can make contact with the bristles during running and moving, impurities and dust on the surface of the conveying belt can be cleaned away through the bristles, and the conveying belt is prevented from falling off. And the tensioning roller is matched to ascend along with the change of the tension degree of the conveying belt, so that the bristles can ascend and descend along with the tensioning roller and keep a contact state with the conveying belt at a proper distance, and the situation that the cleaning effect is reduced due to the fact that the conveying belt is in too tight contact with the bristles or cannot be in contact with the bristles due to fluctuation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine transportation, and particularly to a belt conveyor for transporting coal in open-pit coal mines and its usage method. Background Art

[0002] A belt conveyor for transporting coal in open-pit coal mines is a fixed device for efficiently and continuously transporting coal, and is widely used for material transportation between the stope, waste dump and coal storage yard in open-pit mines. Its design is targeted at the characteristics of the open-air environment, and has advantages such as large transportation volume, long distance, and high reliability. It is the core transportation solution for open-pit coal mine mining.

[0003] Chinese Patent Publication No. CN221369208U discloses a belt conveyor for preventing dust from flying, including a base. A driving structure is arranged inside the base, and the bottom end of the base is in contact with the ground. A transportation component is arranged on the side of the base, and coal is carried on the surface of the transportation component. The connection and use of the transportation component and the base can remotely transport the coal. It also includes a cleaning component arranged at the top end of the base, and the side of the cleaning component is in contact with the side of the transportation component, which can clean the coal adhered to the surface, ensuring the cleanliness of the surface of the transportation component. By using the cleaning component and the dust reduction component in cooperation, the power of the equipment itself can be used to spray the poured water, and the internal structure is used to make the spraying dispersed evenly, and it is more sufficient in a small part of the cleaning part, avoiding a large amount of dust in the cleaning part, achieving the dust reduction effect, and reducing the water consumption and usage cost.

[0004] In the above-mentioned disclosed prior art, the rotation of the brush can be driven by the transmission cooperation between the driving roller and the transmission belt, so as to clean the coal on the surface of the transmission belt. However, after the transmission belt is used for a long time, its tension will change, resulting in certain fluctuations during the operation of the transmission belt, reducing the transmission effect of the driving roller, and causing uneven contact between the brush and the surface of the transmission belt, affecting the cleaning effect. Therefore, a belt conveyor for transporting coal in open-pit coal mines and its usage method are needed to meet people's needs. Summary of the Invention

[0005] The purpose of the present invention is to provide a belt conveyor for transporting coal in open-pit coal mines and its usage method, so as to solve the problems proposed in the above background art that the tension of the transmission belt will change after long-term use, resulting in a reduction in the transmission effect of the driving roller, and causing uneven contact between the brush and the surface of the transmission belt, affecting the cleaning effect.

[0006] To achieve the above object, the present invention provides the following technical solutions: A belt conveyor for transporting coal in an open-pit coal mine and its use method, including a conveyor support frame, on which a conveyor belt is arranged; a bottom plate is installed on one side of the conveyor support frame, a tensioning structure is connected above the bottom plate, a receiving hopper and a first driving wheel are connected to the tensioning structure, a cleaning structure is connected inside the receiving hopper, a transmission structure is connected to the first driving wheel, a telescopic square pipe is installed below the receiving hopper, and a suction structure is connected to the telescopic square pipe.

[0007] Preferably, the tensioning structure includes a plurality of support guide rods installed above the bottom plate. One end of a movable guide rod is slidably installed inside the support guide rod, and the other end of the movable guide rod is installed with a support seat. Two connecting shafts are rotatably installed inside the support seat, and two tensioning rollers are fixedly sleeved on both connecting shafts. Both tensioning rollers are in contact with the surface of the conveyor belt. A tensioning spring is slidably sleeved on the support guide rod, and both ends of the tensioning spring are respectively installed between the bottom plate and the support seat.

[0008] Preferably, a limiting chute is opened inside the support guide rod, and a sliding plate is slidably installed in the limiting chute. The sliding plate is installed at one end of the movable guide rod.

[0009] Preferably, the cleaning structure includes a support rod installed on the inner wall of the receiving hopper. A U-shaped sliding frame is slidably sleeved on the support rod, a brush is installed above the U-shaped sliding frame, and the brush is in contact with the surface of the conveyor belt. Two electric push rods are symmetrically installed on the support seat, and the output ends of both electric push rods are installed below the receiving hopper.

[0010] Preferably, the transmission structure includes a transmission belt drivingly installed on the first driving wheel. The first driving wheel is fixedly sleeved on the connecting shaft. A second driving wheel is drivingly installed on the transmission belt. A reciprocating lead screw is installed inside the second driving wheel. The reciprocating lead screw is rotatably installed inside the receiving hopper and the support rod. A reciprocating threaded block is threadedly sleeved on the reciprocating lead screw, and the reciprocating threaded block is installed on the inner wall of the U-shaped sliding frame.

[0011] Preferably, a guiding chute is opened inside the support rod, and the reciprocating threaded block is slidably installed in the guiding chute.

[0012] Preferably, a U-shaped bracket is installed on the support seat. A sliding rod is slidably installed inside the U-shaped bracket. One end of the sliding rod is installed with a connecting seat. Two pressing wheels are rotatably installed on one side of the connecting seat. Both pressing wheels are in contact with the transmission belt. An auxiliary spring is slidably sleeved on the sliding rod, and both ends of the auxiliary spring are respectively installed between the U-shaped bracket and the connecting seat.

[0013] Preferably, a baffle is installed at one end of the sliding rod, and the baffle is located inside the U-shaped bracket.

[0014] Preferably, the suction structure includes a material receiving bin, which is installed at one end of the telescopic square pipe and communicated with the telescopic square pipe. A storage box is detachably installed inside the material receiving bin. A sealing plate is installed on one side of the storage box. A fixing frame is installed on one side of the material receiving bin. A suction fan is installed above the fixing frame. The suction end of the suction fan is installed on one side of the material receiving bin and communicated with the material receiving bin. A filter screen is installed inside the material receiving bin, and the filter screen corresponds to the suction end of the suction fan.

[0015] A method for using a belt conveyor for transporting coal in an open-pit coal mine includes the following steps: S1. Under the elastic force of the tension spring, the supporting seat will be pushed to move upward, so that the tensioning roller presses the conveyor belt, so that the conveyor belt maintains the friction with the transmission components during operation; S2. When the conveyor belt runs, it will drive the tensioning roller to rotate. The tensioning roller drives the reciprocating lead screw to rotate through the transmission cooperation of the first transmission wheel, the transmission belt and the second transmission wheel, and then drives the brush to move reciprocally, so that the brush can reciprocally clean the surface of the conveyor belt to remove attached impurities; S3. By turning on the electric push rod, the height of the brush can be adjusted to make it contact the conveyor belt more closely, which helps to remove adhered coal powder, coal slime or sundries, or the height can be adjusted when the end of the brush is worn, so that the brush can contact the conveyor belt again for cleaning; S4. When the height of the material receiving hopper and the brush changes, the transmission effect of the second transmission wheel and the transmission belt will be reduced. Under the elastic force of the auxiliary spring, the pressing wheel will be driven to press the transmission belt, so that the transmission belt is reattached to the second transmission wheel and the transmission effect is restored; S5. While cleaning, turn on the suction fan to suck impurities and dust into the material receiving hopper, so that the impurities and dust fall into the storage box. The filter screen can filter out the impurities at the suction end of the suction fan. Subsequently, the storage box can be pulled out by pulling the sealing plate to clean the impurities and dust.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) In the present invention, under the elastic force of the tension spring, the tensioning roller can be driven to press the conveyor belt, so that the conveyor belt can maintain the friction with the transmission components, prevent slipping, and when the conveyor belt runs and moves, it will contact the brush. The brush can clean the impurities and dust on the surface of the conveyor belt. With the tensioning roller moving upward as the tension of the conveyor belt changes, the brush can follow it to move up and down and maintain a proper contact state with the conveyor belt, avoiding the reduction of the cleaning effect caused by too tight contact or non-contact with the brush due to the fluctuation of the conveyor belt.

[0017] (2) When the conveyor belt is running, it will generate friction with the tensioning roller and drive the tensioning roller to rotate. Thus, the first driving wheel is driven to rotate through the connecting shaft. When the first driving wheel rotates, it can drive the reciprocating lead screw to rotate through the transmission cooperation with the transmission belt and the second driving wheel. Furthermore, the U-shaped carriage and the brush are driven to move horizontally back and forth, enabling the brush to reciprocally clean the surface of the conveyor belt, improving the cleaning range. The repeated frictional cleaning can also further enhance the cleaning effect.

[0018] (3) By turning on the electric push rod, the heights of the receiving hopper and the brush can be adjusted, enabling the brush to get closer to the conveyor belt. Closer contact helps to remove the adhered coal powder and coal slime. Also, when the end of the brush wears and cannot contact the conveyor belt, the height of the brush can be adjusted to make it contact the conveyor belt again for cleaning operations, so as to adjust according to the usage requirements.

[0019] (4) While cleaning, by turning on the suction fan, the impurity dust is sucked into the receiving hopper and then enters the storage tank through the telescopic square pipe for storage. After the cleaning is completed, the storage tank can be pulled out by pulling the sealing plate to centrally clean the impurities stored inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of a belt conveyor for transporting coal in open-pit coal mines and its usage method proposed by the present invention; Figure 2 is a bottom plate structural schematic diagram of a belt conveyor for transporting coal in open-pit coal mines and its usage method proposed by the present invention; Figure 3 is a support seat structural schematic diagram of a belt conveyor for transporting coal in open-pit coal mines and its usage method proposed by the present invention; Figure 4 is a sectional structural schematic diagram of a support guide rod of a belt conveyor for transporting coal in open-pit coal mines and its usage method proposed by the present invention; Figure 5 is a receiving hopper structural schematic diagram of a belt conveyor for transporting coal in open-pit coal mines and its usage method proposed by the present invention; Figure 6 is a transmission belt structural schematic diagram of a belt conveyor for transporting coal in open-pit coal mines and its usage method proposed by the present invention; Figure 7 is a receiving bin structural schematic diagram of a belt conveyor for transporting coal in open-pit coal mines and its usage method proposed by the present invention.

[0021] In the figure: 100, conveyor support frame; 101, conveyor belt; 200, bottom plate; 201, support guide rod; 202, movable guide rod; 203, support seat; 204, connecting shaft; 205, tensioning roller; 206, tensioning spring; 207, limit chute; 208, sliding plate; 300, receiving hopper; 301, support rod; 302, U-shaped sliding frame; 303, brush; 304, electric push rod; 305, driving wheel 1; 306, transmission belt; 307, driving wheel 2; 308, reciprocating lead screw; 309, reciprocating threaded block; 310, guiding chute; 311, U-shaped support; 312, sliding rod; 313, connecting seat; 314, squeezing wheel; 315, auxiliary spring; 316, baffle; 400, telescopic square pipe; 401, receiving bin; 402, storage bin; 403, sealing plate; 404, fixing frame; 405, suction fan; 406, filter screen. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figure 1-7 , a belt conveyor for transporting coal in open-pit coal mines provided in this embodiment includes a conveyor support frame 100, and a conveyor belt 101 is arranged on the conveyor support frame 100; a bottom plate 200 is installed on one side of the conveyor support frame 100, a tensioning structure is connected above the bottom plate 200, a receiving hopper 300 and a driving wheel 1 305 are connected to the tensioning structure, a cleaning structure is connected inside the receiving hopper 300, a transmission structure is connected to the driving wheel 1 305, a telescopic square pipe 400 is installed below the receiving hopper 300, and a suction structure is connected to the telescopic square pipe 400.

[0024] In this embodiment, in order to keep the friction between the conveyor belt 101 and the driving roller or transmission component during operation, a tensioning structure is arranged. The tensioning structure includes a plurality of support guide rods 201. The support guide rods 201 are installed above the bottom plate 200. One end of a movable guide rod 202 is slidably installed inside the support guide rod 201. The other end of the movable guide rod 202 is installed with a support seat 203. Two connecting shafts 204 are rotatably installed inside the support seat 203. Tensioning rollers 205 are fixedly sleeved on both of the two connecting shafts 204. Both of the two tensioning rollers 205 are in contact with the surface of the conveyor belt 101. A tensioning spring 206 is slidably sleeved on the support guide rod 201. Both ends of the tensioning spring 206 are installed between the bottom plate 200 and the support seat 203. Under the elastic force of the tensioning spring 206, the support seat 203 will be pushed upward. The movement of the support seat 203 will drive the movable guide rod 202 to slide inside the support guide rod 201. The rising support seat 203 can drive the tensioning roller 205 to press on the surface of the conveyor belt 101 through the connecting shaft 204, so that the conveyor belt 101 can keep the friction between it and the driving roller or transmission component during operation, preventing slipping.

[0025] In this embodiment, a limiting chute 207 is opened inside the support guide rod 201. A sliding plate 208 is slidably installed in the limiting chute 207. The sliding plate 208 is installed at one end of the movable guide rod 202. When the movable guide rod 202 moves, it can drive the sliding plate 208 to slide in the limiting chute 207. Through the arrangement of the limiting chute 207 and the sliding plate 208, the movable guide rod 202 can be prevented from coming off from the inside of the support guide rod 201.

[0026] In this embodiment, in order to avoid the influence of dust and impurities attached to the conveyor belt 101 on the subsequent conveying steps, a cleaning structure is arranged. The cleaning structure includes a support rod 301. The support rod 301 is installed on the inner wall of the receiving hopper 300. A U-shaped sliding frame 302 is slidably sleeved on the support rod 301. A brush 303 is installed above the U-shaped sliding frame 302. The brush 303 is in contact with the surface of the conveyor belt 101. Two electric push rods 304 are symmetrically installed on the support seat 203. The output ends of both of the two electric push rods 304 are installed below the receiving hopper 300. When the conveyor belt 101 is running, it will contact the brush 303. Under the friction between the brush 303 and the conveyor belt 101, the dust and impurities on the surface of the conveyor belt 101 can be removed. The dust and impurities swept down can be received by the receiving hopper 300. By turning on the electric push rods 304, their output ends can drive the receiving hopper 300 to move upward. The rising receiving hopper 300 will drive the U-shaped sliding frame 302 and the brush 303 to rise, making the brush 303 closer to the conveyor belt 101, efficiently removing the adhered pulverized coal, slime or sundries. And when the end of the brush 303 is worn, the height of the brush 303 can also be adjusted to make it contact the conveyor belt 101 again and perform the cleaning operation.

[0027] In this embodiment, in order to achieve the reciprocating cleaning of the brush bristles 303 while the conveyor belt 101 is running and improve the cleaning effect, a transmission structure is arranged. The transmission structure includes a transmission belt 306. The transmission belt 306 is drivingly installed on a first transmission wheel 305. The first transmission wheel 305 is fixedly sleeved on a connecting shaft 204. A second transmission wheel 307 is drivingly installed on the transmission belt 306. A reciprocating lead screw 308 is installed inside the second transmission wheel 307. The reciprocating lead screw 308 is rotatably installed inside the receiving hopper 300 and the support rod 301. A reciprocating threaded block 309 is sleeved on the reciprocating lead screw 308 by threads. The reciprocating threaded block 309 is installed on the inner wall of the U-shaped sliding frame 302. During the operation of the conveyor belt 101, it will drive the tensioning roller 205 to rotate through the friction with the tensioning roller 205. The tensioning roller 205 will drive the first transmission wheel 305 to rotate through the connecting shaft 204, so that the first transmission wheel 305 drives the reciprocating lead screw 308 to rotate through the transmission cooperation of the transmission belt 306 and the second transmission wheel 307. When the reciprocating lead screw 308 rotates, it can drive the reciprocating threaded block 309 to reciprocate by the threaded cooperation with the reciprocating threaded block 309, so that the reciprocating threaded block 309 drives the U-shaped sliding frame 302 to slide on the support rod 301, and then drives the brush bristles 303 to reciprocate and clean the surface of the conveyor belt 101, improving the cleaning effect.

[0028] In this embodiment, a guiding chute 310 is opened inside the support rod 301. The reciprocating threaded block 309 is slidably installed in the guiding chute 310. The reciprocating threaded block 309 that reciprocates will slide in the guiding chute 310. By the setting of the guiding chute 310, the moving direction of the reciprocating threaded block 309 can be restricted.

[0029] In this embodiment, a U-shaped bracket 311 is installed on the support base 203. A sliding rod 312 is slidably installed inside the U-shaped bracket 311. One end of the sliding rod 312 is installed with a connecting seat 313. Two pressing wheels 314 are rotatably installed on one side of the connecting seat 313. Both of the two pressing wheels 314 are in contact with the transmission belt 306. An auxiliary spring 315 is slidably sleeved on the sliding rod 312. The two ends of the auxiliary spring 315 are respectively installed between the U-shaped bracket 311 and the connecting seat 313. When the receiving hopper 300 rises, it will drive the second transmission wheel 307 to rise, reducing the transmission effect between the second transmission wheel 307 and the transmission belt 306. At this time, the transmission belt 306 will become loose due to the separation of the second transmission wheel 307. Under the elastic force of the auxiliary spring 315, it will push the connecting seat 313 to rise and move. The connecting seat 313 will drive the sliding rod 312 to slide inside the U-shaped bracket 311, thereby restricting the moving direction of the connecting seat 313. The continuously rising connecting seat 313 will drive the pressing wheels 314 to rise and press the transmission belt 306, prompting the transmission belt 306 to be pressed against the second transmission wheel 307 again, so that the transmission effect between the second transmission wheel 307 and the transmission belt 306 is restored again to adapt to the change in the height of the receiving hopper 300.

[0030] Further, in this embodiment, a baffle 316 is installed at one end of the sliding rod 312. The baffle 316 is located inside the U-shaped bracket 311. The cooperation between the baffle 316 and the connecting seat 313 can prevent the sliding rod 312 from slipping out of the U-shaped bracket 311.

[0031] In this embodiment, in order to facilitate the centralized storage and cleaning of the dust and impurities swept down, a suction structure is arranged. The suction structure includes a material receiving bin 401. The material receiving bin 401 is installed at one end of the telescopic square pipe 400 and is communicated with the telescopic square pipe 400. A storage box 402 is detachably installed inside the material receiving bin 401. A sealing plate 403 is installed on one side of the storage box 402. A fixing frame 404 is installed on one side of the material receiving bin 401. A suction fan 405 is installed above the fixing frame 404. The suction end of the suction fan 405 is installed on one side of the material receiving bin 401 and is communicated with the material receiving bin 401. A filter screen 406 is installed inside the material receiving bin 401. The filter screen 406 corresponds to the suction end of the suction fan 405. When cleaning the conveyor belt 101, the suction fan 405 can be turned on. The suction end of the suction fan 405 will generate suction, sucking the swept impurities and dust into the receiving hopper 300, so that the sundries fall into the storage box 402 inside the material receiving bin 401 through the telescopic square pipe 400 for storage. The filter screen 406 can filter the impurities. Subsequently, by pulling the sealing plate 403, the storage box 402 can be pulled out of the material receiving bin 401 to facilitate the centralized cleaning of the impurities and dust. When the receiving hopper 300 moves up and down, the telescopic square pipe 400 will expand and contract to adapt to the up and down movement of the receiving hopper 300.

[0032] A method for using a belt conveyor for transporting coal in an open-pit coal mine includes the following steps: S1. Under the elastic force of the tension spring 206, the support seat 203 is pushed to move upward, so that the tensioning roller 205 presses the conveyor belt 101, and the conveyor belt 101 maintains the friction with the transmission components during operation; S2. When the conveyor belt 101 operates, it drives the tensioning roller 205 to rotate. The tensioning roller 205 drives the reciprocating lead screw 308 to rotate through the transmission cooperation of the first transmission wheel 305, the transmission belt 306 and the second transmission wheel 307, and then drives the brush hair 303 to move reciprocally, so that the brush hair 303 can reciprocally clean the surface of the conveyor belt 101 to remove the attached impurities; S3. By turning on the electric push rod 304, the height of the brush hair 303 can be adjusted to make it contact the conveyor belt 101 more closely, which helps to remove the adhered coal powder, coal slime or sundries. Or when the end of the brush hair 303 is worn, its height can be adjusted so that the brush hair 303 contacts the conveyor belt 101 again for cleaning; S4. When the heights of the material receiving hopper 300 and the brush bristles 303 change, the driving effect of the second driving wheel 307 and the transmission belt 306 will be reduced. Under the elastic force of the auxiliary spring 315, the squeezing wheel 314 will be driven to squeeze the transmission belt 306, so that the transmission belt 306 is reattached to the second driving wheel 307 and the driving effect is restored. S5. When cleaning, the suction fan 405 can be turned on to suck impurities and dust into the material receiving hopper 300, so that the impurities and dust fall into the storage box 402. The filter screen 406 can filter out the impurities at the suction end of the suction fan 405. Subsequently, the storage box 402 can be pulled out by pulling the sealing plate 403 to clean the impurities and dust.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A belt conveyor for transporting coal in an open-pit coal mine, comprising a conveyor support frame (100), wherein a conveyor belt (101) is arranged on the conveyor support frame (100), characterized in that: A bottom plate (200) is installed on one side of the conveyor support frame (100), a tensioning structure is connected above the bottom plate (200), a material receiving hopper (300) and a driving wheel (305) are connected to the tensioning structure, a cleaning structure is connected inside the material receiving hopper (300), a driving wheel (305) is connected to a driving structure, a telescopic square tube (400) is installed below the material receiving hopper (300), and a suction structure is connected to the telescopic square tube (400).

2. A belt conveyor for transporting coal in an open-pit coal mine according to claim 1, characterized in that: The tensioning structure comprises a plurality of support guide rods (201), wherein the support guide rods (201) are mounted above the bottom plate (200), one end of a movable guide rod (202) is slidably mounted inside the support guide rods (201), the other end of the movable guide rod (202) is mounted on a support seat (203), two connecting shafts (204) are rotatably mounted inside the support seat (203), both connecting shafts (204) are fixedly sleeved with tensioning rollers (205), both tensioning rollers (205) are in contact with the surface of the conveyor belt (101), and a tensioning spring (206) is slidably sleeved on the support guide rods (201), and both ends of the tensioning spring (206) are respectively mounted between the bottom plate (200) and the support seat (203).

3. A belt conveyor for transporting coal in an open-pit coal mine according to claim 2, characterized in that: A limiting slide groove (207) is provided inside the supporting guide rod (201), a slide plate (208) is slidably mounted inside the limiting slide groove (207), and the slide plate (208) is mounted on one end of the movable guide rod (202).

4. The belt conveyor for transporting coal in an open-pit coal mine according to claim 1, characterized in that: The cleaning structure comprises a support rod (301), the support rod (301) being mounted on the inner wall of the receiving hopper (300), a U-shaped slide (302) being slidably sleeved on the support rod (301), bristles (303) being mounted above the U-shaped slide (302), the bristles (303) being in contact with the surface of the conveyor belt (101), two electric push rods (304) being symmetrically mounted on the support seat (203), and output ends of the two electric push rods (304) being mounted below the receiving hopper (300).

5. The belt conveyor for transporting coal in an open-pit coal mine according to claim 1, characterized in that: The transmission structure comprises a transmission belt (306), wherein the transmission belt (306) is transmission-mounted on a transmission wheel 1 (305), wherein the transmission wheel 1 (305) is fixedly sleeved on a connecting shaft (204), wherein a transmission wheel 2 (307) is transmission-mounted on the transmission belt (306), wherein a reciprocating screw rod (308) is installed inside the transmission wheel 2 (307), wherein the reciprocating screw rod (308) is rotationally mounted inside the receiving hopper (300) and the support rod (301), wherein a reciprocating screw block (309) is threadedly sleeved on the reciprocating screw rod (308), and wherein the reciprocating screw block (309) is installed on the inner wall of the U-shaped slide (302).

6. The belt conveyor for transporting coal in an open-pit coal mine according to claim 5, characterized in that: A guide slot (310) is provided inside the support rod (301), and the reciprocating threaded block (309) is slidably mounted in the guide slot (310).

7. The belt conveyor for transporting coal in an open-pit coal mine and the method for using the belt conveyor according to claim 5, characterized in that: A U-shaped bracket (311) is installed on the support seat (203), a sliding rod (312) is slidably installed inside the U-shaped bracket (311), a connecting seat (313) is installed at one end of the sliding rod (312), two extrusion wheels (314) are rotatably installed on one side of the connecting seat (313), both of the extrusion wheels (314) are in contact with the transmission belt (306), and an auxiliary spring (315) is slidably sleeved on the sliding rod (312), and both ends of the auxiliary spring (315) are respectively installed between the U-shaped bracket (311) and the connecting seat (313).

8. The belt conveyor for transporting coal in an open-pit coal mine according to claim 7, characterized in that: A baffle (316) is installed at one end of the sliding rod (312), and the baffle (316) is located inside the U-shaped bracket (311).

9. The belt conveyor for transporting coal in an open-pit coal mine according to claim 1, characterized in that: The suction structure comprises a material receiving bin (401), the material receiving bin (401) being mounted at one end of the telescopic square tube (400) and being in communication with the telescopic square tube (400), a material storage box (402) being detachably mounted inside the material receiving bin (401), a sealing plate (403) being mounted on one side of the material storage box (402), a fixing frame (404) being mounted on one side of the material receiving bin (401), a suction fan (405) being mounted above the fixing frame (404), a suction end of the suction fan (405) being mounted on one side of the material receiving bin (401) and being in communication with the material receiving bin (401), a filter screen (406) being mounted inside the material receiving bin (401), the filter screen (406) corresponding to the suction end of the suction fan (405).

10. A method for using a belt conveyor for transporting coal in an open-pit coal mine according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Under the elastic force of the tensioning spring (206), the support seat (203) is pushed upward and moved, so that the tensioning roller (205) presses the conveyor belt (101), so that the conveyor belt (101) maintains friction with the transmission components during operation; S2, when the conveyor belt (101) is in operation, it drives the tension roller (205) to rotate, so that the tension roller (205) drives the reciprocating screw rod (308) to rotate through the transmission cooperation of the transmission wheel 1 (305), the transmission belt (306) and the transmission wheel 2 (307), thereby driving the bristles (303) to move back and forth, so that the bristles (303) can reciprocate and clean the surface of the conveyor belt (101) to remove attached impurities; S3, by turning on the electric push rod (304), the height of the brush bristles (303) can be adjusted so that the brush bristles (303) are in closer contact with the conveyor belt (101), which helps to remove adhered coal powder, coal slime or debris; or when the ends of the brush bristles (303) are worn, the height of the brush bristles (303) can be adjusted so that the brush bristles (303) are in contact with the conveyor belt (101) again for cleaning; S4, when the height of the receiving hopper (300) and the bristles (303) changes, the transmission effect of the second transmission wheel (307) and the transmission belt (306) is reduced, and the extrusion wheel (314) is driven to extrude the transmission belt (306) under the elastic force of the auxiliary spring (315), so that the transmission belt (306) is again close to the second transmission wheel (307) and the transmission effect is restored; S5. While cleaning, the suction fan (405) is turned on to suck impurities and dust into the receiving hopper (300), so that the impurities and dust fall into the storage box (402). The filter (406) can filter out impurities at the suction end of the suction fan (405). Subsequently, the storage box (402) can be drawn out by pulling the sealing plate (403) to clean the impurities and dust.

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