Mining belt conveyor

Abstract

The mining belt conveyor comprises a conveyor support, a front roller, a rear roller, a conveying belt, a roller brush, a main driving motor and a separating plate, the front roller and the rear roller are arranged at the tops of the front end and the rear end of the conveyor support respectively, and the roller brush is in fixed-point shaft connection with the bottom of the front end of the conveyor support and is in transmission connection with the front roller through a first synchronous belt; the separating plate is fixedly arranged at the bottom of the front end of the conveyor support in an inclined state and located below the roller brush, and the upper edge of the separating plate abuts against the lower edge of the brush of the roller brush. The roller brush is arranged to abut against the bottom of the conveying belt to scrape and brush residues, the upper edge of the separation plate abuts against the lower edge of the brush of the roller brush in combination, disintegrating residues attached to the roller brush are scraped away when the roller brush rotates, and therefore the roller brush can continuously scrape and brush the belt in a relatively clean state; and slag residues are reduced while the cleaning state of the conveying belt is ensured.

Description

Technical Field

[0001] This invention relates to the field of belt conveyors, and more specifically to a mining belt conveyor. Background Technology

[0002] Mining belt conveyors are widely used continuous transportation equipment in coal mines, metal mines, and other fields. However, existing mining belt conveyors often face problems during long-term operation, such as the difficulty in completely removing residue from the bottom of the conveyor belt and the wear caused by the residue on the belt and rollers. The accumulation of residue at the bottom of the belt not only affects the cleanliness of the equipment, causing the transported coal to contain impurities and slag, but also accelerates the wear and aging of the belt. Summary of the Invention

[0003] The purpose of this invention is to provide a mining belt conveyor to solve the problem of removing residual and attached slag and debris from traditional mining belt conveyors.

[0004] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A mining belt conveyor, comprising: Transport aircraft support frame; The rear roller is axially mounted on the top of the rear end of the conveyor support frame and is configured to rotate at a fixed point on the conveyor support frame. The front roller is axially mounted on the top of the front end of the conveyor support. The front roller is parallel to the rear roller and is configured to rotate at a fixed point on the conveyor support. The conveyor belt is located at the top of the conveyor support frame, and its two ends are respectively fitted onto the front roller and the rear roller; The main drive motor is fixedly installed on one side of the front end of the conveyor frame, and the output shaft of the main drive motor is mechanically connected to the corresponding shaft end of the front roller. The roller brush is fixedly connected to the bottom front end of the conveyor support. The roller brush is parallel to the front roller. The upper edge of the roller brush bristles is pressed against the bottom of the conveyor belt. One end of the roller brush is connected to the same end of the front roller through the first synchronous belt. The separation plate is fixedly installed at the lower front end of the conveyor support in an inclined state. The lower end of the separation plate faces the rear end of the conveyor support and the upper end faces the front end of the conveyor support. The separation plate is located at the bottom of the roller brush, and the upper edge of the separation plate is pressed against the lower edge of the roller brush.

[0005] Furthermore, a short shaft is coaxially fixedly connected to one end of the front roller, and a first synchronous pulley is coaxially fixedly connected to the outside of the short shaft. A second synchronous pulley is fixedly connected to one end of the roller brush. A first synchronous belt connects the first and second synchronous pulleys, and the output shaft of the main drive motor is mechanically connected to the short shaft.

[0006] Furthermore, the output shaft of the main drive motor is connected to a third synchronous pulley, and a fourth synchronous pulley is coaxially fixed to the outer side of the first synchronous pulley. The third and fourth synchronous pulleys are connected by a second synchronous belt drive.

[0007] Furthermore, a drying mechanism is installed below the conveyor belt, behind the roller brush, with the air outlet of the drying mechanism facing the lower surface of the conveyor belt.

[0008] Furthermore, the front roller has a hollow internal structure, and a hollow bushing extending outward in the same direction is formed at the end of the front roller away from the main drive motor. The hollow bushing is shaft-connected to the top of the conveyor support, and the hollow bushing connects the inner and outer sides of the front roller. An inner bearing is fixedly embedded on the inner side of the hollow bushing, and a central shaft is coaxially arranged on the inner side of the front roller. A positioning bearing for connecting the corresponding end of the central shaft is embedded on the inner wall of one shaft end of the front roller near the main drive motor. The other end of the central shaft passes through the inner ring of the inner bearing from the inside to the outside and extends to the outer side of the hollow bushing. The inner ring of the inner bearing is fixedly sleeved on the outer side of the central shaft. The front roller can rotate relative to the central shaft under the action of the inner bearing and the positioning bearing. A coil winding stator is set on the central shaft, and a permanent magnet rotor is set on the inner side of the front drum at the position corresponding to the coil winding stator. The permanent magnet rotor rotates with the front drum, and the two form a generator structure to supply power to the drying mechanism. The top of the transport machine support is provided with a shaft fixing seat for the outer end of the central shaft to be fixedly inserted, so as to lock the central shaft and restrict its rotation; Among them, a strip-shaped wire outlet groove is formed on the outer wall of the central shaft for the wires of the coil winding stator to be led outward.

[0009] Furthermore, a planetary gear set is provided between the permanent magnet rotor and the inner wall of the front roller. The planetary gear set is used to increase the rotational speed of the permanent magnet rotor. The planet carrier of the planetary gear set is coaxially fixedly sleeved on the outside of the central shaft. The gear ring of the planetary gear set is coaxially fixedly embedded in the inner side of the front roller. The bore diameter of the sun gear of the planetary gear set is larger than the shaft diameter of the central shaft. An annular connector is fixedly connected to the side of the sun gear near the permanent magnet rotor. The other side of the annular connector is coaxially fixedly connected to the permanent magnet rotor. The outer diameter of the permanent magnet rotor is smaller than the inner diameter of the front roller, and the inner diameter of the annular connector is larger than the shaft diameter of the central shaft.

[0010] Furthermore, the transport aircraft support has two parallel side beams; A front roller support seat is fixedly installed at the top front end of each side beam. The front roller support seat is used for shaft connection of the corresponding end of the front roller.

[0011] Each side beam is equipped with a tail pulley tensioning bracket at its rear end. The tail pulley tensioning bracket is used to drive the rear roller to move horizontally along the length of the side beam in order to adjust the tension of the conveyor belt.

[0012] Furthermore, the tail wheel tensioner bracket includes: The rear roller support is slidably and fits against the top of the rear end of the side beam. The rear roller support is used for the corresponding end shaft connection of the rear roller. The lead screw is located at the rear end of the side beam. The axial direction of the lead screw is parallel to the length direction of the side beam. Both ends of the lead screw are axially connected to the side beam at fixed points. The lead screw is threaded to the bottom of the rear roller support. Two telescopic dustproof sleeves are provided. Both telescopic dustproof sleeves are fitted on the outside of the lead screw, and the two telescopic dustproof sleeves are located on both sides of the rear roller support. One end of each telescopic dustproof sleeve is sealed to the corresponding side of the rear roller support, and the other end is sealed to the corresponding fixed point shaft joint of the lead screw.

[0013] Furthermore, a through-type screw mounting groove is formed at the rear end of the side beam. The length direction of the screw mounting groove is parallel to the length direction of the side beam. The screw is located in the screw mounting groove, and the two ends of the screw are respectively axially connected to the corresponding groove wall of the screw mounting groove. The bottom of the rear roller support is fixedly provided with a nut seat located in the lead screw mounting groove and threadedly connected to the lead screw; One end of the lead screw has a coaxial force-applying shaft that extends outward through the outside of the lead screw mounting groove.

[0014] Furthermore, the telescopic dustproof sleeve is made of rubber corrugated pipe; On both sides of the nut seat and on the two corresponding inner walls of the screw mounting groove, there are cylindrical tube seats that are concentric with the screw. The end of the rubber bellows is sleeved on the outside of the cylindrical tube seat, and the end of the rubber bellows is sleeved with a clamp for fixing it.

[0015] The beneficial effects of the present invention are as follows: The present invention sets a roller brush to press against the bottom of the conveyor belt to scrape off the residue, and combines it with a separation plate to press the upper edge of the roller brush against the lower edge of the brush. When the roller brush rotates, it scrapes off the attached debris, so that the roller brush can continuously scrape the belt in a relatively clean state, ensuring the clean state of the conveyor belt while reducing the residue of slag. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in 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 merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a top view schematic diagram of an embodiment of the present invention; Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram; Figure 3 This is a schematic diagram of the front-end planar structure of the tape transport device according to the present invention; Figure 4 This is a planar sectional view of the front roller according to an embodiment of the present invention; Figure 5 for Figure 1 A sectional view along line BB in the middle; Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point C; Figure 7 This is a schematic diagram of another embodiment of the tail wheel tensioning bracket of the present invention; The labels in the diagram represent the following: 1-Conveyor bracket; 2-Side beam; 3-Rear roller support; 4-Rear roller; 5-Front roller support; 6-Front roller; 7-Conveyor belt; 8-Roller brush; 9-First synchronous belt; 10-Main drive motor; 11-Separation plate; 12-Short shaft; 13-First synchronous pulley; 14-Second synchronous pulley; 15-Drying mechanism; 16-Hollow bushing; 17-Outer bearing; 18-Inner bearing; 19-Center shaft; 20-Positioning bearing; 21-Shaft fixing seat; 22-Coil winding stator; 23- Permanent magnet rotor; 24-Strip cable outlet; 25-Planetary carrier; 26-Gear ring; 27-Sun gear; 28-Annular connector; 31-Gantry support; 32-Crossbeam; 33-Roller; 35-Third synchronous pulley; 36-Fourth synchronous pulley; 37-Second synchronous belt; 38-Lead screw; 39-Lead screw mounting slot; 40-Force-applying shaft; 41-Nut seat; 42-Telescopic dustproof sleeve; 43-Grease; 44-Cylindrical tube seat; 45-Clamp; 46-Threaded connection tube seat; 47-Nut cap; 48-Side baffle; 49-Dustproof bearing. 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] Refer to 1 to Figure 4 This embodiment provides a mining belt conveyor, which aims to solve the problem of removing residual and attached slag debris from traditional mining belt conveyors.

[0020] Specifically, the mining belt conveyor includes a conveyor frame 1, a rear roller 4 shafted to the top of the rear end of the conveyor frame 1, a front roller 6 shafted to the top of the front end of the conveyor frame 1, a conveyor belt 7 located at the top of the conveyor frame 1 and sleeved on the front roller 6 and the rear roller 4, a main drive motor 10 fixedly installed on one side of the front end of the conveyor frame 1, a roller brush 8 fixedly shafted to the bottom of the front end of the conveyor frame 1, and a separation plate 11 fixedly installed at an inclined state below the front end of the conveyor frame 1.

[0021] The front roller 6 is parallel to the rear roller 4, and both the front roller 6 and the rear roller 4 are configured to rotate at a fixed point on the transport support 1; the output shaft of the main drive motor 10 is mechanically connected to the corresponding shaft end of the front roller 6.

[0022] The roller brush 8 is parallel to the front roller 6. The upper edge of the brush of the roller brush 8 is pressed against the bottom of the conveyor belt 7. One end of the roller brush 8 is connected to the same end of the front roller 6 through the first synchronous belt 9. The conveyor belt 7 is a closed belt with the ends connected as one piece, which constitutes the main body of material conveying.

[0023] The lower end of the separating plate 11 faces the rear end of the conveyor support 1, and the upper end faces the front end of the conveyor support 1. The separating plate 11 is located at the bottom of the roller brush 8, and the upper edge of the separating plate 11 is pressed against the lower edge of the brush of the roller brush 8.

[0024] In terms of cleaning, this embodiment provides a roller brush 8 and a separation plate 11 structure near the front roller 6. The upper edge of the separation plate 11 abuts against the lower edge of the brush of the roller brush 8. During the rotation of the conveyor belt 7 driven by the front roller 6, the roller brush 8 is rotated synchronously by the first synchronous belt 9. Since the roller brush 8 is on the return path of the conveyor belt 7, the rotation direction of the conveyor belt 7 and the roller brush 8 are opposite at this time, so that the roller brush 8 can generate similar scraping force on the lower surface of the returning conveyor belt 7 to intercept the residue at the bottom of the conveyor belt 7.

[0025] After the roller brush 8 rotates and scrapes off the residue at the bottom of the conveyor belt 7, the debris on the brush is scraped off directly and falls vertically as it continues to rotate, allowing the roller brush 8 to continue scraping the bottom of the conveyor belt 7 in a relatively clean state.

[0026] Furthermore, to ensure the stability of the conveyor belt 7 during operation, an inner roller support assembly is also installed on the conveyor support frame 1. This support assembly extends to the inner side of the conveyor belt 7 and provides support for the upper and lower sides of the conveyor belt 7 through several sets of gantry supports 31 evenly distributed along the length of the side beam 2, and rollers 33 connected to the upper and lower crossbeams 32 of each set of gantry supports 31. The upper rollers 33 are attached upward to the inner top wall of the conveyor belt 7, and the lower rollers 33 are attached downward to the inner bottom wall of the conveyor belt 7.

[0027] In this way, it can be further ensured that the bottom of the conveyor belt 7 can always be in stable contact with the roller brush 8 below during operation, thereby ensuring the cleaning effect of the roller brush 8 on the conveyor belt 7.

[0028] Furthermore, the transmission between the roller brush 8 and the front roller 6 can be achieved via a first synchronous belt 9. Specifically, one end of the front roller 6 is coaxially fixedly connected to a short shaft 12, and a first synchronous pulley 13 is coaxially fixedly connected to the outer side of the short shaft 12. One end of the roller brush 8 is fixedly connected to a second synchronous pulley 14, and the first synchronous belt 9 connects the first synchronous pulley 13 and the second synchronous pulley 14. The output shaft of the main drive motor 10 is mechanically connected to the short shaft 12. In this way, the operation of one main drive motor 10 can simultaneously drive both the conveyor and the roller brush 8, simplifying the structural complexity of the device.

[0029] Since the main drive motor 10 of the transport machine is generally not located close to the front roller 6, the transmission between the two can be achieved by a first synchronous belt 9. Specifically, the output shaft of the main drive motor 10 is connected to a third synchronous pulley 35, and a fourth synchronous pulley 36 is coaxially fixed to the outer side of the first synchronous pulley 13. The third synchronous pulley 35 and the fourth synchronous pulley 36 are connected by a second synchronous belt 37.

[0030] To cope with humid environments, this conveyor integrates a drying mechanism 15, which is located below the conveyor belt 7 and behind the roller brush 8. The air outlet of the drying mechanism 15 faces the lower surface of the conveyor belt 7 after it has been scraped and brushed, and dries the belt by sending out hot air.

[0031] To provide electrical power to the drying unit 15, the present invention provides two optional power supply schemes.

[0032] In the first scheme, the transport aircraft can be directly powered by an external power source, which can be mains power, and simultaneously provide power to the drying mechanism 15 and the main drive motor 10, enabling the drying mechanism 15 to operate continuously.

[0033] In the second energy-saving scheme, this transport machine introduces a self-powered mechanism. This mechanism is integrated inside the front roller 6, which has a hollow structure. At the end of the front roller 6 away from the main drive motor 10, a hollow bushing 16 extends outward in a coaxial direction. The hollow bushing 16 is axially connected to the top of the transport machine support 1 and connects the inner and outer sides of the front roller 6. An inner bearing 18 is fixedly embedded on the inner side of the hollow bushing 16. A central shaft 19 is coaxially arranged on the inner side of the front roller 6. A positioning bearing 20 for connecting the corresponding end of the central shaft 19 is embedded on the inner wall of one shaft end of the front roller 6 near the main drive motor 10. The other end of the central shaft 19 passes through the inner ring of the inner bearing 18 from the inside to the outside and extends to the outer side of the hollow bushing 16. The inner ring of the inner bearing 18 is fixedly sleeved on the outer side of the central shaft 19. The front roller 6 can rotate relative to the central shaft 19 under the action of the inner bearing 18 and the positioning bearing 20. A coil winding stator 22 is provided on the central shaft 19, and a permanent magnet rotor 23 is provided on the inner side of the front drum 6 at the position corresponding to the coil winding stator 22. The permanent magnet rotor 23 rotates with the front drum 6, and the two form a generator structure to supply energy to the drying mechanism 15. The top of the transport machine support 1 is provided with a shaft fixing seat 21 for the outer end of the central shaft 19 to be fixedly inserted, so as to lock the central shaft 19 and restrict its rotation. Among them, a strip-shaped lead-out groove 24 is formed on the outer wall of the central shaft 19 for the wires of the coil winding stator 22 to be led outward.

[0034] With this configuration, a generator system is built inside the front roller 6 and between the central shaft 19. This generator system generates electricity by locking the central shaft 19, which is equipped with a coil winding stator 22, in place, while the front roller 6, equipped with a permanent magnet rotor 23, rotates relative to the coil winding stator 22 during rotation. The generated electricity is directly used to drive the operation of the drying mechanism 15, avoiding the trouble of independently powering the drying mechanism 15. At the same time, as long as the conveyor is running, the drying process will continue, eliminating the need for an independent switch control part for the drying mechanism 15.

[0035] Furthermore, to prevent energy shortages during low-speed operation of the transport aircraft and to further improve power generation efficiency, a planetary gear set is installed between the permanent magnet rotor 23 and the inner wall of the front roller 6. The planetary gear set is used to increase the rotational speed of the permanent magnet rotor 23. The planet carrier 25 of the planetary gear set is coaxially fixedly sleeved on the outside of the central shaft 19, and the gear ring 26 of the planetary gear set is coaxially fixedly embedded in the inner side of the front roller 6. The bore diameter of the sun gear 27 of the planetary gear set is larger than the shaft diameter of the central shaft 19. An annular connector 28 is fixedly connected to the side of the sun gear 27 closest to the permanent magnet rotor 23, and the other side of the annular connector 28 is coaxially fixedly connected to the permanent magnet rotor 23.

[0036] Because there is a speed difference between the permanent magnet rotor 23 and the front roller 6 caused by the planetary gear set, the outer diameter of the permanent magnet rotor 23 is set to be smaller than the inner diameter of the front roller 6 to prevent them from contacting and reflecting each other. At the same time, in order to avoid the annular connector 28 from contacting the stationary central shaft 19, the inner diameter of the annular connector 28 is larger than the shaft diameter of the central shaft 19.

[0037] In this way, when the operating speed of the front drum 6 is transmitted to the permanent magnet rotor 23 through the planetary gear set, the speed is greatly increased, thereby effectively improving the power generation efficiency and driving the drying mechanism 15 to work stably.

[0038] In the aforementioned self-powered scheme, this embodiment also includes a storage battery, a humidity sensor, and a controller. The electrical energy generated by the generator structure (i.e., the output from the stator 22 wires of the coil winding) is electrically connected to the storage battery for charging. The storage battery is electrically connected to the drying mechanism 15, providing power to the drying mechanism 15. The humidity sensor is electrically connected to the controller to collect humidity signals. The controller is electrically connected to the drying mechanism 15 and controls the operation of the drying mechanism 15 based on the humidity signals. The humidity sensor can be installed directly below the lower surface of the conveyor belt 7, preferably near the air outlet of the drying mechanism 15 or downstream thereof, to more accurately detect the humidity of the belt after drying. This humidity sensor can employ a non-contact measurement method, such as an infrared humidity sensor or a capacitive humidity sensor. By fixing the sensor to the conveyor bracket, maintaining a preset distance between its sensing surface and the lower surface of the conveyor belt, it can collect humidity data of the belt surface in real time. The controller receives the signals transmitted by the humidity sensor via wired or wireless means and determines the dryness of the conveyor belt accordingly, thereby precisely controlling the operation of the drying mechanism.

[0039] Furthermore, the transport support 1 of this embodiment generally has two parallel side beams 2; A front roller support 5 is fixedly installed at the top front end of each side beam 2. The front roller support 5 is used for shaft connection of the corresponding end of the front roller 6.

[0040] Each side beam 2 is equipped with a tail pulley tensioning bracket at its rear end. The tail pulley tensioning bracket is used to drive the rear roller 4 to move horizontally along the length of the side beam 2 in order to adjust the tension of the conveyor belt 7.

[0041] Reference Figures 5 to 7 The tail pulley tensioning bracket provided in this embodiment not only enables the adjustment of the tension of the conveyor belt 7, but also further solves the problem that the screw drive components of the existing belt conveyor tail pulley tensioning bracket are prone to wear and failure due to exposure to harsh environments.

[0042] Specifically, the tail pulley tensioning bracket of this embodiment includes a rear roller support 3 disposed on the top of the side beam 2, and a lead screw 38 disposed at one end of the side beam 2. The axial direction of the lead screw 38 is parallel to the length direction of the side beam 2, and both ends of the lead screw 38 are fixedly axially connected to the side beam 2. The bottom of the rear roller support 3 is threadedly connected to the lead screw 38. Therefore, when the lead screw 38 rotates, the rear roller support 3 will move along the length direction of the side beam 2, thereby realizing the adjustment of the tension of the conveyor belt.

[0043] To protect the lead screw 38, the bracket also includes two telescopic dustproof sleeves 42. Both telescopic dustproof sleeves 42 are fitted onto the outside of the lead screw 38 and are located on both sides of the rear roller support 3. One end of each telescopic dustproof sleeve 42 is sealed to the corresponding side of the rear roller support 3, and the other end is sealed to the corresponding fixed-point shaft joint of the lead screw 38.

[0044] In this way, the telescopic dustproof sleeve 42 completely covers the threaded part of the lead screw 38, forming a sealed protective structure that isolates the lead screw 38 from external coal dust, water vapor and corrosive substances, preventing impurities from entering the threaded pair and causing wear or jamming, thus ensuring smooth adjustment and the reliability of the device.

[0045] In the above scheme, to make the installation of the lead screw 38 more stable and regular, a through-hole lead screw mounting groove 39 can be formed at the end of the side beam 2, with the length direction of the lead screw mounting groove 39 parallel to the length direction of the side beam 2. The lead screw 38 is located in the lead screw mounting groove 39, and both ends of the lead screw 38 are respectively axially connected to the corresponding groove wall of the lead screw mounting groove 39.

[0046] Correspondingly, a nut seat 41 is fixedly installed at the bottom of the rear roller support 3, located within the lead screw mounting groove 39 and threadedly connected to the lead screw 38. To facilitate applying rotational power to the lead screw 38, one end of the lead screw 38 has a coaxial force-applying shaft 40 that extends outward through the outside of the lead screw mounting groove 39. This structure accommodates the main transmission components within the groove of the side beam 2, resulting in a more compact structure and providing preliminary physical protection.

[0047] Regarding the specific material selection for the telescopic dustproof sleeve 42, considering cost and versatility, the telescopic dustproof sleeve 42 can be a rubber corrugated pipe. Rubber material has good elasticity and sealing properties, capable of accommodating the expansion and contraction deformation of the sleeve when the rear roller support 3 moves. However, in certain working conditions requiring higher wear resistance, corrosion resistance, or strength, the telescopic dustproof sleeve 42 can also be a stainless steel corrugated pipe, which provides stronger physical protection and a longer service life.

[0048] Within the enclosed space formed by the telescopic dustproof sleeve 42, simply isolating external impurities may not be sufficient to achieve optimal operating results.

[0049] To further reduce the frictional resistance between the lead screw 38 and the nut seat 41 and enhance rust resistance, the sealed space formed between the telescopic dust sleeve 42 and the lead screw 38 can be filled with grease 43. The presence of grease 43 not only ensures continuous lubrication but also further prevents any possible penetration of minute impurities or moisture.

[0050] The reliability of the sealing connection is crucial for the protective effect. If a rubber bellows is used, to achieve a firm seal at both ends, cylindrical tube seats 44, concentric with the lead screw 38, can be fixedly installed on both sides of the nut seat 41 and on the two corresponding inner walls of the lead screw mounting groove 39. The end of the rubber bellows is sleeved on the outside of the cylindrical tube seat 44, and a clamp 45 is fitted onto the end of the rubber bellows for locking and fixing it.

[0051] If a stainless steel bellows is used, its rigidity is relatively high, requiring a more rigid connection method. In this case, threaded connection pipe seats 46, concentric with the lead screw 38, can be fixedly installed on both sides of the nut seat 41 and on the two corresponding inner walls of the lead screw mounting groove 39. Nut caps 47 are fitted onto both ends of the stainless steel bellows to securely connect their ends to the threaded connection pipe seats 46, achieving a secure sealing connection by tightening the threads.

[0052] To ensure the stability of the rear roller support 3 during its movement along the side beam 2 and to prevent it from deflecting or swaying, side baffles 48 can be formed on both sides of the bottom of the rear roller support 3. The two side baffles 48 slide against the outer side of the corresponding side beam 2, serving as guides and limiters.

[0053] Furthermore, the shaft connections between the two ends of the lead screw 38 and the side beam 2 are relatively rotating parts, which are also potential weak points. To improve the protection performance and smoothness of rotation at this point, a dustproof bearing 49 can be installed at the shaft connection between the lead screw 38 and the lead screw mounting groove 39 to connect the two. The dustproof bearing 49 has its own sealing structure, which can prevent external dust from entering from the shaft end while supporting rotation.

[0054] Finally, to drive the adjustment device, a rotational torque can be applied to the force-applying shaft 40 using a geared motor or a wrench, thereby driving the lead screw 38 to rotate. Using a geared motor enables automated and precise tension control, while using a wrench provides a simple and reliable manual adjustment method.

[0055] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of the embodiments of the present invention.

Claims

1. A mining belt conveyor, characterized in that, include: Transport aircraft support frame (1); The rear roller (4) is axially mounted on the top of the rear end of the conveyor support (1), and the rear roller (4) is configured to rotate at a fixed point on the conveyor support (1); A front roller (6) is axially mounted on the top of the front end of the conveyor support (1). The front roller (6) is parallel to the rear roller (4). The front roller (6) is configured to rotate at a fixed point on the conveyor support (1). The conveyor belt (7) is located on top of the conveyor support (1), and the two ends of the conveyor belt (7) are respectively sleeved on the front roller (6) and the rear roller (4); The main drive motor (10) is fixedly installed on one side of the front end of the transport machine support (1), and the output shaft of the main drive motor (10) is mechanically connected to the corresponding shaft end of the front roller (6). A roller brush (8) is fixedly connected to the bottom of the front end of the conveyor support (1). The roller brush (8) is parallel to the front roller (6). The upper edge of the brush of the roller brush (8) is pressed against the bottom of the conveyor belt (7). One end of the roller brush (8) is connected to the same end of the front roller (6) through a first synchronous belt (9). The separation plate (11) is fixedly installed at the lower front end of the conveyor support (1) in an inclined state. The lower end of the separation plate (11) faces the rear end of the conveyor support (1) and the upper end faces the front end of the conveyor support (1). The separation plate (11) is located at the bottom of the roller brush (8) and the upper edge of the separation plate (11) abuts against the lower edge of the brush of the roller brush (8).

2. The mining belt conveyor according to claim 1, characterized in that, One end of the front roller (6) is coaxially fixedly connected to a short shaft (12), and the outer side of the short shaft (12) is coaxially fixedly connected to a first synchronous pulley (13). One end of the roller brush (8) is fixedly connected to a second synchronous pulley (14). The first synchronous belt (9) connects the first synchronous pulley (13) and the second synchronous pulley (14). The output shaft of the main drive motor (10) is mechanically connected to the short shaft (12).

3. A mining belt conveyor according to claim 2, characterized in that, The output shaft of the main drive motor (10) is connected to a third synchronous pulley (35), and a fourth synchronous pulley (36) is coaxially fixed to the outer side of the first synchronous pulley (13). The third synchronous pulley (35) and the fourth synchronous pulley (36) are connected by a second synchronous belt (37).

4. A mining belt conveyor according to claim 1, characterized in that, A drying mechanism (15) is provided below the conveyor belt (7) and behind the roller brush (8), with the air outlet of the drying mechanism (15) facing the lower surface of the conveyor belt (7).

5. A mining belt conveyor according to claim 4, characterized in that, The interior of the front roller (6) is hollow. A hollow bushing (16) extending outward in the same direction is formed at one end of the front roller (6) away from the main drive motor (10). The hollow bushing (16) is axially connected to the top of the conveyor bracket (1). The hollow bushing (16) connects the inner and outer sides of the front roller (6). An inner bearing (18) is fixedly embedded on the inner side of the hollow bushing (16), and a central shaft (19) is coaxially arranged on the inner side of the front roller (6). A positioning bearing (20) for connecting the corresponding end of the central shaft (19) is embedded on the inner wall of one shaft end of the front roller (6) near the main drive motor (10). The other end of the central shaft (19) passes through the inner ring of the inner bearing (18) from the inside to the outside and extends to the outer side of the hollow bushing (16). The inner ring of the inner bearing (18) is fixedly sleeved on the outer side of the central shaft (19). The front roller (6) can rotate relative to the central shaft (19) under the action of the inner bearing (18) and the positioning bearing (20). A coil winding stator (22) is provided on the central shaft (19), and a permanent magnet rotor (23) is provided on the inner side of the front roller (6) corresponding to the position of the coil winding stator (22). The permanent magnet rotor (23) rotates with the front roller (6), and the two form a generator structure to supply energy to the drying mechanism (15). The top of the transport machine bracket (1) is provided with a shaft fixing seat (21) for the outer end of the central shaft (19) to be fixedly inserted, so as to lock the central shaft (19) and restrict its rotation. Among them, a strip-shaped wire outlet groove (24) is formed on the outer wall of the central shaft (19) for the wires of the coil winding stator (22) to be led outward.

6. A mining belt conveyor according to claim 5, characterized in that, A planetary gear set is provided between the permanent magnet rotor (23) and the inner wall of the front roller (6). The planetary gear set is used to increase the rotational speed of the permanent magnet rotor (23). The planet carrier (25) of the planetary gear set is coaxially fixedly sleeved on the outside of the central shaft (19). The gear ring (26) of the planetary gear set is coaxially fixedly embedded in the inner side of the front roller (6). The bore diameter of the sun gear (27) of the planetary gear set is larger than the shaft diameter of the central shaft (19). An annular connector (28) is fixedly connected to the side of the sun gear (27) near the permanent magnet rotor (23). The other side of the annular connector (28) is coaxially fixedly connected to the permanent magnet rotor (23). The outer diameter of the permanent magnet rotor (23) is smaller than the inner diameter of the front roller (6). The inner diameter of the annular connector (28) is larger than the shaft diameter of the central shaft (19).

7. A mining belt conveyor according to claim 1, characterized in that, The transport machine support (1) has two parallel side beams (2). A front roller support seat (5) is fixedly provided at the top front end of each of the side beams (2), and the front roller support seat (5) is used for the corresponding end of the front roller (6) to be shaft connected. Each of the side beams (2) is provided with a tail wheel tensioning bracket at its rear end. The tail wheel tensioning bracket is used to drive the rear roller (4) to translate along the length direction of the side beam (2) in order to adjust the tension of the conveyor belt (7).

8. A mining belt conveyor according to claim 7, characterized in that, The tail wheel tensioning bracket includes: The rear roller support (3) is slidably and fits against the top of the rear end of the side beam (2), and the rear roller support (3) is used for shaft connection of the corresponding end of the rear roller (4); A lead screw (38) is provided at the rear end of the side beam (2). The axial direction of the lead screw (38) is parallel to the length direction of the side beam (2). Both ends of the lead screw (38) are fixedly axially connected to the side beam (2). The lead screw (38) is threadedly connected to the bottom of the rear roller support seat (3). There are two telescopic dustproof sleeves (42). Both telescopic dustproof sleeves (42) are sleeved on the outside of the lead screw (38). The two telescopic dustproof sleeves (42) are located on both sides of the rear roller support (3). One end of each telescopic dustproof sleeve (42) is sealed to the corresponding side of the rear roller support (3), and the other end is sealed to the fixed point shaft joint of the lead screw (38).

9. A mining belt conveyor according to claim 8, characterized in that, The rear end of the side beam (2) forms a through screw mounting groove (39) that runs vertically through the side beam (2). The length direction of the screw mounting groove (39) is parallel to the length direction of the side beam (2). The screw (38) is located in the screw mounting groove (39), and the two ends of the screw (38) are respectively axially connected to the corresponding groove wall of the screw mounting groove (39). The bottom of the rear roller support (3) is fixedly provided with a nut seat (41) located in the lead screw mounting groove (39) and threadedly connected to the lead screw (38). One end of the lead screw (38) is formed with a coaxial force-applying shaft (40), which extends outward through the outside of the lead screw mounting groove (39).

10. A mining belt conveyor according to claim 9, characterized in that, The telescopic dustproof sleeve (42) is a rubber corrugated pipe; On both sides of the nut seat (41) and the two corresponding inner walls of the screw mounting groove (39), cylindrical tube seats (44) concentric with the screw (38) are fixedly provided. The end of the rubber corrugated tube is sleeved on the outside of the cylindrical tube seat (44), and the end of the rubber corrugated tube is sleeved with a clamp (45) for fixing it.

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