Scraper conveyor for coal mine transportation

Abstract

The invention relates to the technical field of coal mining equipment, in particular to a scraper conveyor for coal mine transportation, which comprises a conveying line, a screening mechanism and a slag removal mechanism, scraper chain wheels are rotationally connected between the front side wall and the rear side wall of the conveying line in a bilateral symmetry manner through bearings, and the two scraper chain wheels are in transmission connection through a scraper chain; uniformly distributed conveying scrapers are fixedly connected to the outer surface of the scraper chain, an upper cover plate is fixedly connected to the upper end of the conveying line, a feeding port is formed in the left side of the upper cover plate, the screening mechanism comprises a screening plate, a feeding box, a driving mounting box, an interlayer, a rotating shifting frame, a shifting rotating rod and a shifting plate, and the screening plate is fixedly connected to the upper side of the interior of the feeding port. The upper end of the screening plate is fixedly connected with a feeding box, and the front side wall and the rear side wall of the feeding box are fixedly connected with driving mounting boxes correspondingly. According to the scraper conveyor for coal mine transportation, noise of the scraper conveyor is reduced, and meanwhile the service life of the scraper chain and the service life of the conveying scraper are prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining equipment, in particular to a scraper conveyor for coal mine transportation. BACKGROUND

[0002] The application of the scraper conveyor is highly concentrated in the coal mining industry, especially in underground coal mines. It is an indispensable equipment for fully mechanized working faces. It is a continuous conveying equipment with scraper chain as traction component and middle trough as bearing mechanism. It circulates through the motor and reducer to drive the chain, and uses the scraper to push the bulk material in the trough to move forward. It is one of the core transportation equipment in coal mines.

[0003] In the prior art, the patent document with the authorized publication number CN218289206U discloses a coal mine scraper conveyor, which comprises a conveyor main body, the conveyor main body comprises a conveying box body, a transmission roller and a transmission chain. In actual use, the pre-treatment cylinder is connected below the feeding channel, which can pre-treat the large ore blocks entering the inside of the feeding channel, avoid the phenomenon of carding of large ore blocks directly entering the inside of the conveyor main body, and the shortcomings are that the mining area needs to be equipped with a special crusher to crush the material, and the two rotating crushing rollers on the upper side will produce a large vibration effect when crushing the ore, which will produce a large noise, and the impact force of the crushed ore will damage the scraper and chain below, reducing the service life. The oil sponge is used to oil the scraper body, which will contaminate the ore slag when scraping the ore, affecting the conveying environment. Therefore, we propose a scraper conveyor for coal mine transportation. SUMMARY

[0004] The present application provides a scraper conveyor for coal mine transportation, which reduces the noise of the scraper conveyor and improves the service life of the scraper chain and the conveying scraper.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A scraper conveyor for coal mine transportation, comprising a conveying line, a screening mechanism and a slag cleaning mechanism; The front side wall and the rear side wall of the conveying line are connected to the left and right symmetrical rotating connection of the scraper sprocket through the bearing, and the two scraper sprockets are connected through a scraper chain, the outer surface of the scraper chain is fixedly connected with uniformly distributed conveying scrapers, the upper end of the conveying line is fixedly connected with an upper cover plate, and the left side of the upper cover plate is provided with a feeding port; The screening mechanism includes a screening plate, a feed box, a drive mounting box, a mezzanine, a rotating frame, a rotating rod, and a rotating plate. The screening plate is fixedly connected to the upper side of the feed inlet. The feed box is fixedly connected to the upper end of the screening plate. The drive mounting box is fixedly connected to the front and rear side walls of the feed box. The two drive mounting boxes have clearance openings on their opposite inner sides. The two drive mounting boxes have mezzanines inside. The two mezzanines have rotating frames inside. The two rotating frames are fixedly connected by a fixed rod. The fixed rod passes through the clearance opening longitudinally. The two rotating frames are rotatably connected by a bearing. The four rotating rods also pass through the two clearance openings at their centers. The outer arc surfaces of the rotating rods are fixedly connected to evenly distributed rotating plates. The slag removal mechanism is located on the lower left side inside the conveyor line.

[0006] Furthermore, the screening mechanism includes a slag removal channel and a feed hopper. The slag removal channel is fixedly connected to the left side of the feed box, and the feed hopper is fixedly connected to the upper right side of the feed box.

[0007] Furthermore, it also includes a screening drive mechanism, which comprises a transmission gear, a drive gear, a screening motor, a rotating frame drive shaft, an upper crank rod, a rotating frame circumferentially connected shaft, a worm gear, a worm wheel, and a synchronously connected shaft. The transmission gear is uniformly rotatably connected to the front side of the rotating frame via the rotating shaft. The front end of the rotating rod is fixedly connected to the drive gear, which meshes with the transversely adjacent transmission gear. The front side of the rotating frame is symmetrically rotatably connected to the rotating frame circumferentially connected shaft. The front ends of the two rotating frames circumferentially connected shafts are rotatably connected to the upper crank rods. The left side of the front side of the two upper crank rods is fixedly connected to the rotating frame drive shaft. The moving and fixed rotating shafts are driven by two rotating paddles. The outer arc front faces of the fixed rotating shafts are rotatably connected to the front side wall of the front interlayer. Worm gears are fixedly sleeved on the outer arc front faces of the two rotating paddles on the front side. Worms are rotatably connected to the left and right ends of the interior of the front drive mounting box. The two worms are fixedly connected by a synchronous connecting shaft. The two worm gears are meshed with the worms on the same side. A feeding motor is fixedly connected to the right side of the front rotating paddle via a mounting bracket. The output shaft of the feeding motor is fixedly connected to the front end of the rightmost actuating rod. A screening motor is fixedly connected to the front right side of the front drive mounting box. The output shaft of the screening motor is fixedly connected to the right end of the right worm.

[0008] Furthermore, a slag discharge port is provided on the left side of the lower side wall of the conveyor line, a discharge hopper is fixedly connected to the right side of the lower side wall of the conveyor line, and a bearing plate is fixedly connected to the upper side between the front and rear inner walls of the conveyor line.

[0009] Furthermore, the slag removal mechanism includes a connecting frame, a sealing box, a rectangular sleeve, a rectangular sliding column, a cleaning shaft, a cleaning brush, a limiting slider, and a vertical chute. The sealing box is fixedly connected to the lower left side of the conveyor line via the connecting frame. A rectangular sleeve is fixedly connected to the middle of the lower side of the sealing box. A rectangular sliding column is slidably connected inside the rectangular sleeve. A cleaning shaft is rotatably connected to the lower middle side of the rectangular sliding column. A cleaning brush is fixedly connected to the front and rear sides of the outer arc of the cleaning shaft. A limiting slider is rotatably connected to the front and rear ends of the cleaning shaft. Vertical chute is opened on the left side of the front side wall and the left side of the rear side wall of the conveyor line. Two limiting sliders are slidably connected to the interior of the vertical chute located on the same side.

[0010] Furthermore, it also includes a slag-cleaning drive mechanism, which includes a cleaning motor, a lower crank, a round pin, a vertical reciprocating moving plate, a lower gear, and a rack. The cleaning motor is fixedly connected to the front side of the sealed box. The control end of the cleaning motor is fixedly connected to the lower crank. The upper end of the lower crank is fixedly connected to the round pin. The upper end of the rectangular sliding column is fixedly connected to the vertical reciprocating moving plate. A transverse sliding groove is opened inside the vertical reciprocating moving plate. The outer arc surface of the round pin is slidably connected to the inside of the transverse sliding groove. The front end and rear end of the cleaning shaft are fixedly connected to the lower gear, respectively. The right side walls of the two vertical sliding grooves are fixedly connected to the racks, respectively. The two lower gears are meshed with the racks located on the same side.

[0011] Furthermore, the slag removal mechanism also includes a toothed frame, which is symmetrically fixed to the lower side of the connecting frame. A high-pressure jet pipe is fixedly connected to the lower side of the connecting frame. High-pressure jet nozzles are evenly distributed and fixedly connected to the lower side of the outer arc surface of the high-pressure jet pipe. An external air compressor pump is connected to the air inlet end of the high-pressure jet pipe.

[0012] Furthermore, a drive motor is fixedly connected to the left side of the front side of the conveyor line, and the output shaft of the drive motor is fixedly connected to the front end of the central fixed shaft of the scraper sprocket on the left side.

[0013] Furthermore, the upper surface of the screening plate is provided with evenly distributed screening openings, the diameter of which decreases from right to left.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The scraper conveyor for coal mine transportation disclosed in this invention uses a cleaning brush that rotates and moves up and down repeatedly to continuously clean the surface of the scraper chain and conveying scraper. This avoids the accumulation of dirt on the scraper chain and conveying scraper surface without affecting the conveying environment, thus preventing the transmission efficiency from being affected.

[0015] 2. The scraper conveyor for coal mine transportation disclosed in this invention adopts a continuously rotating rotating frame and a continuously rotating actuating plate inside the rotating frame. When the ore enters the feed box, the ore with a larger diameter that is inconvenient to transport is removed and re-crushed. Moreover, the larger ore entering the conveyor is buried by the smaller ore. The scraper chain and conveying scraper are subjected to less impact force, which reduces the noise of the scraper conveyor and improves the service life of the scraper chain and conveying scraper. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a scraper conveyor for coal mine transportation, as shown in the example. Figure 2 This is a schematic diagram of the internal structure of the conveyor line in an embodiment; Figure 3 This is a schematic diagram of the screening mechanism in an embodiment; Figure 4 This is an exploded view of the screening mechanism in an embodiment. Figure 5 This is a partial structural diagram of the screening mechanism in an embodiment; Figure 6 for Figure 5 Enlarged view of section A (labeled A); Figure 7 This is a partial structural diagram of the screening mechanism in an embodiment; Figure 8 This is a schematic diagram of the slag removal mechanism in an embodiment; Figure 9 This is a schematic diagram of the slag removal mechanism and the slag removal drive mechanism in the embodiment; Figure 10 This is a schematic diagram of the internal structure of the sealed box in the embodiment; Figure 11 This is a schematic diagram of the transmission component in an embodiment.

[0017] In the diagram: 1-Conveyor line, 2-Upper cover plate, 3-Feed inlet, 41-Screwing plate, 42-Feed box, 43-Slag removal channel, 44-Feed hopper, 45-Drive mounting box, 46-Interlayer, 47-Rotating paddle, 48-Paddle lever, 49-Paddle plate, 51-Transmission gear, 52-Drive gear, 53-Screwing motor, 54-Rotating paddle drive shaft, 55-Upper crank rod, 56-Rotating paddle surrounding connecting shaft, 57-Worm gear, 58-Worm wheel, 59-Synchronous connecting shaft, 6-Slag discharge port, 71-Connecting frame, 72-Seal Box, 73-Rectangular sleeve, 74-Rectangular sliding column, 75-Cleaning shaft, 76-Cleaning brush, 77-Limit slider, 78-Toothed frame, 79-Vertical slide groove, 81-Cleaning motor, 82-Lower crank rod, 83-Round pin, 84-Vertical reciprocating moving plate, 85-Lower gear, 86-Rack, 9-High-pressure jet pipe, 10-Drive motor, 11-Scraper sprocket, 12-Scraper chain, 13-Conveying scraper, 14-Bearing plate, 15-Discharge hopper, 16-Control console, 17-Material feeding motor, 18-Allowing opening, 19-Fixing rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-11 This embodiment provides a scraper conveyor for coal mine transportation, including a conveyor line 1, a screening mechanism, a screening drive mechanism, a slag removal mechanism, and a slag removal drive mechanism.

[0020] Scraper sprockets 11 are symmetrically connected to the front and rear side walls of conveyor line 1 via bearings. The two scraper sprockets 11 are connected by a scraper chain 12. Tensioning is manually adjusted, and all tensioning components are installed at the tail end. The core installation parts include the tail frame, tail slide, and driven sprocket assembly. The tail slide can slide back and forth along the guide rail at the tail of the chute. The actuator includes jacks and adjusting nuts, generally symmetrically arranged on the left and right sides of the tail slide. One end rests on the fixed tail base, and the other end rests on the sliding tail frame. The jack base rests on the fixed tail frame, and the jack rod rests on the tail slide. When tensioning is required, the jack handle is manually cranked, extending the jack and pushing the tail end backward. After tensioning to the correct position, the machine is mechanically secured with pads and locking pins. The tail slides backward, increasing the center distance between the sprockets at the head and tail. This stretches the closed scraper chain, gradually increasing the tension until the chain tension is appropriate—neither sagging nor too tight. Evenly distributed conveying scrapers 13 are fixedly connected to the outer surface of the scraper chain 12. An upper cover plate 2 is fixedly connected to the upper end of the conveyor line 1. A feed inlet 3 is located on the left side of the upper cover plate 2. A slag discharge port 6 is located on the left side of the lower side wall of the conveyor line 1. A discharge hopper 15 is fixedly connected to the right side of the lower side wall of the conveyor line 1. A bearing plate 14 is fixedly connected to the upper side between the front and rear inner walls of the conveyor line 1. Coal particles falling onto the bearing plate 14 are scraped to the right by the conveying scrapers 13 and discharged along the discharge hopper 15 to the outside of the conveyor. A control console 16 is located on one side of the conveyor line 1.

[0021] A drive motor 10 is fixedly connected to the left side of the front side of conveyor line 1. The output shaft of the drive motor 10 is fixedly connected to the front end of the central fixed shaft of the scraper sprocket 11 on the left side. The controlled end of the drive motor 10 is electrically connected to the control end of the industrial control console 16. The drive motor 10 is not a separate motor drive; it consists of an explosion-proof asynchronous motor, a hydraulic coupling, and a hardened gear reducer. The explosion-proof asynchronous motor provides the basic rotational power, and the output shaft of the explosion-proof asynchronous motor is fixedly connected to the input shaft of the hydraulic coupling. The hydraulic coupling enables soft start and buffer start. Impact protection for the motor and transmission components, automatic power cut-off in case of overload, and hardened gear reducer is a torque-increasing component, mostly a three-stage cylindrical gear. Its rotary input shaft is fixed to the output shaft of the hydraulic coupling, and the output shaft of the hardened gear reducer is fixedly connected to the front end of the scraper sprocket 11 on the left. In this embodiment, the explosion-proof asynchronous motor is a YBX3 series high-efficiency explosion-proof three-phase asynchronous motor, the hydraulic coupling is a YOXII450 model torque-limiting hydraulic coupling, and the ZSY315 model three-stage transmission high-rigidity cylindrical gear reducer is used.

[0022] When the scraper conveyor is needed, the control console 16 can be adjusted to drive the motor 10 to run. The output shaft of the motor 10 rotates, which in turn drives the scraper sprocket 11 on the left to rotate, and then drives the scraper sprocket 11 on the right to rotate through the scraper chain 12. At this time, the conveying scraper 13 moves cyclically around the transmission direction of the scraper chain 12.

[0023] The screening mechanism includes a screening plate 41, a feed box 42, a drive mounting box 45, a mezzanine 46, a rotating paddle 47, a paddle lever 48, and a paddle plate 49. The screening plate 41 is fixedly connected to the upper side of the feed inlet 3. The feed box 42 is fixedly connected to the upper end of the screening plate 41. The drive mounting box 45 is fixedly connected to the front and rear side walls of the feed box 42, respectively. The two drive mounting boxes 45 have clearance openings on their opposite inner sides. The two drive mounting boxes 45 have mezzanines 46 inside, and the two mezzanines 46 have rotating paddles 47 inside. The two rotating paddles 47 are fixedly connected by a fixing rod 19, which passes longitudinally through the clearance opening. The two rotating paddles 47 are rotatably connected by bearings, and the four paddle levers 48 also pass through the center of the two clearance openings, respectively. 18. The outer arc surface of the rotating rod 48 is fixedly connected with uniformly distributed rotating plates 49. The screening mechanism includes a slag removal channel 43 and a feeding hopper 44. The slag removal channel 43 is fixedly connected to the left side of the feeding box 42. The feeding hopper 44 is fixedly connected to the upper right side of the feeding box 42. The upper surface of the screening plate 41 is provided with uniformly distributed screening openings. The diameter of the screening openings decreases from right to left. The side wall of the interlayer 46 can be sealed by using soft filler. It is made of relatively soft thread-like material and filled with rectangular strips on the side wall of the interlayer 46 and the rotating bracket 47. When the rotating bracket 47 shakes, the pulling and pressing of the filler forces the filler to be pressed between the rotating bracket 47 and the interlayer 46 on the sealing surface, producing a sealing effect and ensuring that the transmission components inside the drive mounting box 45 are in a sealed state in real time.

[0024] The screening drive mechanism includes a transmission gear 51, a drive gear 52, a screening motor 53, a rotating frame drive shaft 54, an upper crank 55, a rotating frame circumferential connecting shaft 56, a worm gear 57, a worm wheel 58, and a synchronous connecting shaft 59. The transmission gear 51 is rotatably connected to the front side of the rotating frame 47 via the rotating shaft. The front ends of the rotating rods 48 are fixedly connected to the drive gears 52, which mesh with the adjacent transmission gears 51 laterally. The front sides of the rotating frame 47 are symmetrically rotatably connected to the rotating frame circumferential connecting shaft 56. The front ends of the two rotating frames circumferentially connecting shafts 56 are rotatably connected to the upper crank 55. The left sides of the front sides of the two upper crank 55 are respectively... Two rotating paddles 47 are fixedly connected to a rotating paddle drive shaft 54. The outer arc faces of the two rotating paddle drive shafts 54 are rotatably connected to the front side wall of the front interlayer 46. Worm gears 58 are fixedly sleeved on the outer arc faces of the two rotating paddle drive shafts 54. Worms 57 are rotatably connected to the left and right ends of the front drive mounting box 45. The two worms 57 are fixedly connected to each other by a synchronous connecting shaft 59. The two worm gears 58 are meshed with the worms 57 located on the same side. A feeding motor 17 is fixedly connected to the right side of the front rotating paddle 47 by a mounting bracket. The output shaft of the feeding motor 17 is fixedly connected to the front end of the rightmost actuating rod 48. The front right side of the front drive mounting box 45 is fixedly... A screening motor 53 is connected, and the output shaft of the screening motor 53 is fixedly connected to the right end of the worm gear 57 on the right side. The controlled ends of the feeding motor 17 and the screening motor 53 are electrically connected to the control end of the industrial control console 16. During this period, the coal raw materials to be conveyed can be continuously fed into the feed hopper 44, and then the coal raw material particles fall into the inside of the feed box 42. Then, the industrial control console 16 can be adjusted to operate the screening motor 53. The output shaft of the screening motor 53 rotates counterclockwise, which drives the two worm gears 57 to rotate clockwise synchronously through the synchronously connected rotating shaft 59. This drives the two rotating brackets on the front to drive the fixed rotating shaft 54 ​​to rotate clockwise, which drives the two upper cranks 55 to rotate, which in turn drives the rotating brackets on the front to rotate around the fixed shaft 54. The rotating shaft 56 rotates clockwise around the fixed rotating shaft 54 ​​of the lever on the same side, which in turn drives the rotating lever 47 to rotate clockwise around the center point of the connecting line between the central axes of the two rotating levers driving the fixed rotating shafts 54. During this period, the control console 16 is adjusted, the feeding motor 17 operates, and the output shaft of the feeding motor 17 rotates clockwise, which in turn drives the rightmost lever 48 to rotate clockwise. This, in turn, drives the other three levers 48 to rotate clockwise through the transmission gear 51 and the drive gear 52. The transmission gear 51 rotates counterclockwise, while the drive gear 52 rotates clockwise, so all four levers 48 rotate clockwise. The rotating lever 47 remains in a horizontal and parallel state at all times.The rotating paddle 47 continuously moves the coal raw material particles inside the feed box 42 from right to left to prevent them from jamming the paddle plate 49. Smaller coal raw material particles first fall onto the left side of the upper surface of the support plate 14, and the diameter of the screening opening decreases from right to left. Smaller particles fall from the right side of the screening plate 41, while larger particles fall from the left side. Larger coal particles cannot fall along the screening plate 41 and enter along the left side. When passing the right side of the screening plate 41, they are mixed with smaller coal particles, achieving synchronous conveying of large and small particles. This ensures that the coal particles do not collide with the surface of the conveying scraper 13 or the upper surface of the support plate 14 during conveying. The coal particles are then discharged outside the conveyor along the slag removal channel 43, where they need to be crushed again by an external crusher.

[0025] The slag removal mechanism is located inside the lower left side of the conveyor line 1. The mechanism includes a connecting frame 71, a sealing box 72, a rectangular sleeve 73, a rectangular sliding column 74, a cleaning shaft 75, a cleaning brush 76, a limiting slider 77, and a vertical chute 79. The sealing box 72 is fixedly connected to the lower left side of the conveyor line 1 via the connecting frame 71. A rectangular sleeve 73 is fixedly connected to the center of the lower side of the sealing box 72. A rectangular sliding column 74 is slidably connected inside the rectangular sleeve 73. A cleaning shaft 75 is rotatably connected to the lower middle side of the rectangular sliding column 74. A cleaning brush 76 is fixedly connected to the front and rear sides of the outer arc of the cleaning shaft 75, respectively. The front and rear ends of the cleaning shaft 75... Each limiting slider 77 is rotatably connected. Vertical grooves 79 are respectively opened on the left side of the front side wall and the left side of the rear side wall of the conveyor line 1. The two limiting sliders 77 are slidably connected to the interior of the vertical grooves 79 located on the same side. Corrugated protective plates are fixedly connected to the upper and lower surfaces of the limiting sliders 77, and the end of the corrugated protective plate needs to be fixed to the side wall of the vertical groove 79. As the vertical groove 79 moves vertically, the corrugated protective plate will adaptively extend and retract. Sealing plates are fixedly connected to the front side of the front vertical groove 79 and the rear side of the rear vertical groove 79, respectively. The sealing plates and the corrugated protective plates form a sealed space.

[0026] In this embodiment, the slag removal mechanism also includes a toothed frame 78, which is symmetrically fixedly connected to the lower side of the connecting frame 71. A high-pressure jet pipe 9 is fixedly connected to the lower side of the connecting frame 71. High-pressure jet nozzles are uniformly distributed and fixedly connected to the lower side of the outer arc surface of the high-pressure jet pipe 9. An external air compressor pump is connected to the air inlet end of the high-pressure jet pipe 9.

[0027] The slag removal drive mechanism includes a cleaning motor 81, a lower crank 82, a pin 83, a vertical reciprocating moving plate 84, a lower gear 85, and a rack 86. The cleaning motor 81 is fixedly connected to the front side of the sealed box 72. The control end of the cleaning motor 81 is fixedly connected to the lower crank 82. The upper end of the lower crank 82 is fixedly connected to the pin 83. The upper end of the rectangular sliding column 74 is fixedly connected to the vertical reciprocating moving plate 84. A transverse sliding groove is provided inside the vertical reciprocating moving plate 84. The outer arc surface of the pin 83 is slidably connected to the inside of the transverse sliding groove. The front and rear ends of the cleaning shaft 75 are respectively fixedly connected to the lower gear 85. The lower gear 85 and the rack 86 are located within the sealed space formed by the sealing plate and the corrugated protective plate to prevent the transmission components from being contaminated and reduce [damage / contamination]. In terms of transmission, racks 86 are fixedly connected to the right side walls of the two vertical chute 79, and two lower gears 85 are respectively meshed with the racks 86 located on the same side. The controlled end of the cleaning motor 81 is electrically connected to the control end of the industrial control console 16. When the conveying scraper 13 moves to the lower left side of the conveyor line 1, the industrial control console 16 can be adjusted to operate the cleaning motor 81. The output shaft of the cleaning motor 81 rotates clockwise, which in turn drives the lower crank 82 to rotate clockwise around the output shaft of the cleaning motor 81, which in turn drives the round pin 83 to rotate clockwise around the output shaft of the cleaning motor 81. Taking the starting point of the round pin 83 as the uppermost side as an example, when the round pin 83 rotates 180° clockwise, it will push the vertical reciprocating moving plate 84 downward. The reciprocating moving plate 84 moves up and down a distance equal to twice the length of the lower crank 82, thereby causing the rectangular sliding column 74 to extend and the cleaning shaft 75 to move downwards. Taking the starting point of the round pin 83 as the lowest point as an example, when the round pin 83 rotates 180° clockwise, it will push the vertical reciprocating moving plate 84 upwards, thereby causing the rectangular sliding column 74 to retract into the sealed box 72, and thus causing the cleaning shaft 75 to move upwards. As the cleaning shaft 75 moves up and down, the lower gear 85 at the front and rear ends of the cleaning shaft 75 will always maintain a meshing relationship with the rack 86 located on the same side. When the cleaning shaft 75 moves downwards, the rack 86 drives the lower gear 85 to rotate counterclockwise, and when the cleaning shaft 75 moves upwards... The rack 86 drives the lower gear 85 to rotate clockwise. When the cleaning shaft 75 moves vertically downward, the rotating cleaning shaft 75 brushes the surface of the conveying scraper 13 and the scraper chain 12, which move from right to left, through the cleaning brush 76. Then, when the cleaning shaft 75 moves upward, the conveying scraper 13 passes through to avoid hitting the cleaning shaft 75. The debris generated during cleaning is discharged to the outside of the device through the slag discharge port 6. During the upward movement of the cleaning shaft 75, the cleaning brush 76 passes through the toothed frame 78, brushing the cleaning brush 76 on the cleaning shaft 75 to remove a large amount of dust or dirt. The external air compressor pump intermittently supplies compressed gas, and this time interval is adjusted automatically according to the actual situation.For example, if the amount of dust is small, it can be sprayed once every 2 minutes; if the amount of dust is large, it can be sprayed once every 10 seconds. This compressed gas travels along the guide of the high-pressure jet pipe 9 and is finally ejected from the high-pressure jet nozzle. The high-pressure jet nozzle is angled towards the toothed frame 78. When the toothed frame 78 moves the cleaning brush 76, the high-pressure jet nozzle sprays out again, cleaning the cleaning brush 76 and blowing off the stubborn dirt.

[0028] The working principle of the scraper conveyor for coal mine transportation provided in this embodiment is as follows: When the scraper conveyor is needed, the control panel 16 can be adjusted to operate the drive motor 10. The output shaft of the drive motor 10 rotates, which in turn drives the left scraper sprocket 11 to rotate. This, in turn, drives the right scraper sprocket 11 to rotate via the scraper chain 12. At this time, the conveying scraper 13 moves cyclically around the transmission direction of the scraper chain 12. During this process, the coal raw materials to be conveyed can be continuously fed into the feed hopper 44. Then, the coal raw material particles fall into the feed box 42. The control panel 16 can then be adjusted to operate the screening motor 53. The output shaft of the screening motor 53 rotates counterclockwise, which drives the two worm gears 57 to rotate clockwise synchronously via the synchronously connected rotating shaft 59. This, in turn, drives the two rotating brackets on the front side. The drive shaft 54 ​​rotates clockwise, causing the two upper cranks 55 to rotate. This, in turn, causes the front rotating arm to rotate clockwise around the connecting shaft 56, which is located on the same side of the rotating arm. This, in turn, causes the rotating arm 47 to rotate clockwise around the center point of the connecting line between the central axes of the two rotating arms driving the drive shaft 54. During this process, the control console 16 is adjusted, and the feeding motor 17 operates. The output shaft of the feeding motor 17 rotates clockwise, causing the rightmost actuating lever 48 to rotate clockwise. This, in turn, drives the other three actuating levers 48 to rotate clockwise via the transmission gear 51 and the drive gear 52. The transmission gear 51 rotates counter-clockwise, while the drive gear 52 rotates clockwise. As the needle rotates, the four actuating levers 48 rotate clockwise, keeping the rotating frame 47 horizontal and parallel. The rotating frame 47 continuously actuates the coal raw material particles inside the feed box 42 from right to left, preventing the coal raw material particles from jamming the actuating plate 49. Smaller coal raw material particles fall first onto the left side of the upper surface of the bearing plate 14, and the diameter of the screening opening decreases from right to left. Smaller particles fall from the right side of the screening plate 41, while larger particles fall from the left side. Larger coal particles cannot fall along the screening plate 41 and are then discharged outside the conveyor along the slag removal channel 43. These coal particles need to be crushed again by an external crusher. The coal particles that fall onto the bearing plate 14 are scraped to the right by the conveying scraper 13. Finally, the material is discharged through the discharge hopper 15 to the outside of the conveyor. As the conveying scraper 13 moves to the lower left side of the conveyor line 1, the control panel 16 can be adjusted to start the cleaning motor 81. The output shaft of the cleaning motor 81 rotates clockwise, which in turn drives the lower crank 82 to rotate clockwise around the output shaft of the cleaning motor 81, which in turn drives the round pin 83 to rotate clockwise around the output shaft of the cleaning motor 81. Taking the starting point of the round pin 83 as the uppermost side as an example, when the round pin 83 rotates 180° clockwise, it will push the vertical reciprocating moving plate 84 downward, which will drive the rectangular sliding column 74 to extend, which will then drive the cleaning rotating shaft 75 to move downward. Taking the starting point of the round pin 83 as the lowermost side as an example, when the round pin 83 rotates 180° clockwise...This will cause the vertical reciprocating moving plate 84 to move upward, thereby causing the rectangular sliding column 74 to retract into the sealed box 72, which in turn causes the cleaning shaft 75 to move upward. As the cleaning shaft 75 moves up and down, the lower gears 85 at the front and rear ends of the cleaning shaft 75 will always maintain a meshing relationship with the rack 86 located on the same side. When the cleaning shaft 75 moves downward, the rack 86 drives the lower gear 85 to rotate counterclockwise, and when the cleaning shaft 75 moves upward, the rack 86 drives the lower gear 85 to rotate clockwise. When the cleaning shaft 75 moves vertically downward, the rotating cleaning shaft 75 brushes the surface of the conveying scraper 13 and the scraper chain 12 that move from right to left on the lower side through the cleaning brush 76. Then, when the cleaning shaft 75 moves upward, the conveying scraper 13 moves upward. The conveying scraper 13 passes through to prevent it from hitting the cleaning shaft 75. The debris generated during cleaning is discharged through the slag outlet 6 to the outside of the device. As the cleaning shaft 75 moves upward, the cleaning brush 76 passes through the toothed frame 78, brushing the cleaning brush 76 on the cleaning shaft 75 to remove a large amount of dust or dirt. The cleaning brush 76 uses nylon bristles and needs to be replaced after a period of use. An external air compressor pump intermittently supplies compressed gas, which is guided by the high-pressure jet pipe 9 and finally ejected from the high-pressure jet nozzle. The high-pressure jet nozzle is angled towards the toothed frame 78. When the toothed frame 78 moves the cleaning brush 76, the high-pressure jet nozzle ejects air, cleaning the cleaning brush 76 again and blowing off stubborn stains.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A coal mine haulage flightbar conveyor characterised in that: Including conveying line (1), screening mechanism and slag removal mechanism; The front side wall and the rear side wall of the conveying line (1) are rotatably connected with the scraper chain wheels (11) through bearings and are left-right symmetrical, two scraper chain wheels (11) are drivingly connected through a scraper chain (12), the outer surface of the scraper chain (12) is fixedly connected with uniformly distributed conveying scrapers (13), the upper end of the conveying line (1) is fixedly connected with the upper cover plate (2), the left side of the upper cover plate (2) is provided with the feeding port (3); The screening mechanism comprises a screening plate (41), a feeding box (42), a driving installation box (45), a interlayer (46), a rotating push frame (47), a push rotating rod (48) and a push plate (49), the screening plate (41) is fixedly connected to the inner upper side of the feeding port (3), the upper end of the screening plate (41) is fixedly connected with the feeding box (42), the front side wall and the rear side wall of the feeding box (42) are fixedly connected with the driving installation box (45), respectively, the opposite inner sides of the two driving installation boxes (45) are provided with avoiding openings (18), respectively, the interiors of the two driving installation boxes (45) are provided with the interlayers (46), respectively, the interiors of the two interlayers (46) are provided with the rotating push frames (47), respectively, the two rotating push frames (47) are fixedly connected through the fixed rod (19), the fixed rod (19) penetrates the avoiding openings (18) longitudinally, the two rotating push frames (47) are rotatably connected with the uniformly distributed push rotating rods (48) through bearings, the four push rotating rods (48) also penetrate the two avoiding openings (18) centrally, respectively, the outer cam surfaces of the push rotating rods (48) are fixedly connected with the uniformly distributed push plates (49), respectively. The slag removal mechanism is arranged at the inner left lower side of the conveying line (1).

2. A coal mine haulage flightbar conveyor as claimed in claim 1 wherein: The screening mechanism comprises a slag removal channel (43) and a feeding hopper (44), the slag removal channel (43) is fixedly connected to the left side of the feeding box (42), and the upper end right side of the feeding box (42) is fixedly connected with the feeding hopper (44).

3. A coal mine haulage flightbar conveyor as claimed in claim 1 characterised in that: The screening driving mechanism comprises a transmission gear (51), a driving gear (52), a screening motor (53), a rotating racking driving fixed shaft (54), an upper side crank rod (55), a rotating racking surrounding connecting rotating shaft (56), a worm (57), a worm wheel (58) and a synchronous connecting rotating shaft (59), the transmission gear (51) is uniformly connected to the front side of the rotating racking (47) on the front side through a rotating shaft, the front ends of the racking rotating rods (48) are fixedly connected with the driving gears (52) respectively, the driving gears (52) are meshed with the horizontally adjacent transmission gears (51) respectively, the front side of the rotating racking (47) is symmetrically connected with the rotating racking surrounding connecting rotating shaft (56) on the left and right sides, the front ends of the two rotating racking surrounding connecting rotating shafts (56) are rotatably connected with the upper side crank rods (55) respectively, the front sides of the two upper side crank rods (55) are fixedly connected with the rotating racking driving fixed shaft (54) on the left side respectively, the outer arc front sides of the two rotating racking driving fixed shafts (54) are rotatably connected with the front side walls of the front layer (46) respectively, the outer arc front sides of the two rotating racking driving fixed shafts (54) on the front side are fixedly provided with the worm wheels (58) respectively, the worm gears (57) are rotatably connected to the inside left and right ends of the front side driving installation box (45) respectively, the two worm gears (57) are fixedly connected through the synchronous connecting rotating shaft (59), the two worm wheels (58) are meshed with the worm gears (57) on the same side respectively, the front side of the rotating racking (47) is fixedly connected with the racking motor (17) on the right side through a mounting frame, the output shaft of the racking motor (17) is fixedly connected with the front end of the racking rotating rod (48) on the far right side, the front side of the right side of the front side driving installation box (45) is fixedly connected with the screening motor (53), and the output shaft of the screening motor (53) is fixedly connected with the right end of the right side worm gear (57).

4. The coal mine haulage flight bar conveyor of claim 1, wherein: The lower side wall of the conveying line (1) is provided with a slag discharge port (6) on the left side, the lower side wall of the conveying line (1) is fixedly connected with a discharge hopper (15) on the right side, and the upper side between the front and rear inner walls of the conveying line (1) is fixedly connected with a bearing plate (14).

5. The coal mine haulage flight bar conveyor of claim 1, wherein: The slag cleaning mechanism comprises a connecting frame (71), a sealing box (72), a rectangular sleeve (73), a rectangular sliding column (74), a cleaning shaft (75), a cleaning brush (76), a limiting sliding block (77) and a vertical sliding groove (79), the sealing box (72) is fixedly connected to the inner left lower side of the conveying line (1) through the connecting frame (71), the lower side of the sealing box (72) is fixedly connected with the rectangular sleeve (73) in the middle part, the rectangular sleeve (73) is slidably connected with the rectangular sliding column (74) in the inside, the middle lower side of the rectangular sliding column (74) is rotatably connected with the cleaning shaft (75), the outer arc surfaces of the front side and the rear side of the cleaning shaft (75) are fixedly connected with the cleaning brushes (76) respectively, the front end and the rear end of the cleaning shaft (75) are rotatably connected with the limiting sliding blocks (77) respectively, the front side wall left side and the rear side wall left side of the conveying line (1) are respectively provided with the vertical sliding grooves (79), and the two limiting sliding blocks (77) are slidably connected with the inside of the vertical sliding grooves (79) on the same side respectively.

6. A scraper conveyor for coal mine haulage as claimed in claim 5, characterised in that: The slag cleaning mechanism further comprises a toothed frame (78), the toothed frame (78) is fixedly connected to the lower side of the connecting frame (71) in left-right symmetry, the lower side of the connecting frame (71) is fixedly connected with the high-pressure air jet pipe (9), the outer arc surface of the high-pressure air jet pipe (9) is fixedly connected with the uniformly distributed high-pressure air jet nozzles on the lower side, and the air inlet end of the high-pressure air jet pipe (9) is externally connected with the external air compression pump.

7. A scraper conveyor for coal mine haulage as claimed in claim 5, characterised in that: The front side left side of the conveying line (1) is fixedly connected with the driving machine (10), and the output shaft of the driving machine (10) is fixedly connected with the front end of the central fixed shaft of the left side scraper chain wheel (11).

8. The coal mine haulage flight bar conveyor of claim 1, wherein: The upper surface of the screening plate (41) is provided with uniformly distributed screening openings, and the diameters of the screening openings gradually decrease from right to left.

9. The coal mine haulage flight bar conveyor of claim 1, wherein: The front side left side of the conveying line (1) is fixedly connected with the driving machine (10), and the output shaft of the driving machine (10) is fixedly connected with the front end of the central fixed shaft of the left side scraper chain wheel (11).

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