Conveyor belt feeding device

Abstract

The present invention belongs to the technical field of transportation devices, and specifically discloses a conveyor belt feeding device. It is used to solve the problem of equipment failure caused by the local load of the conveyor belt exceeding the safety threshold. It includes a controller, a conveyor belt and a conveyor frame. The conveyor belt is arranged on the conveyor frame. The inner side of the conveyor belt is provided with a transmission magnetic strip. The conveyor frame is also provided with a main transmission mechanism, a load monitoring mechanism, an auxiliary transmission mechanism and a magnetic locking mechanism; the main transmission mechanism and the load monitoring mechanism are both provided at the end of the conveyor frame, and each magnetic locking mechanism is evenly arranged on the conveyor frame along the length direction of the conveyor frame. An auxiliary transmission mechanism is provided between each pair of adjacent magnetic locking mechanisms. The main transmission mechanism, the load monitoring mechanism and the auxiliary transmission mechanism are all connected to the controller. The present invention is conducive to realizing real-time high-precision load detection of the conveyor belt and safe locking of the local conveyor belt, effectively avoiding the problem of equipment failure and safety accidents caused by conveyor belt breakage.

Description

Technical Field

[0001] The invention belongs to the technical field of transportation devices, and in particular relates to a conveyor belt feeding device. Background Art

[0002] Traditional belt conveyor systems face numerous challenges and potential risks when conveying materials over extremely long distances. Especially in situations involving large conveying angles and steep slopes, materials can easily slide due to gravity, leading to concentrated accumulation of materials in certain sections. This accumulation not only increases local load pressure but, if the load exceeds the conveyor's design rating, can cause the belt to break or the supporting structure to fail, leading to equipment failure and even serious safety accidents. Summary of the Invention

[0003] The object of the present invention is to provide a conveyor belt feeding device that effectively solves the problem of equipment failure caused by the local load of the conveyor belt exceeding the safety threshold.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a conveyor belt feeding device, including a controller, a conveyor belt and a conveyor frame, the conveyor belt is arranged on the conveyor frame, the inner side of the conveyor belt is provided with a transmission magnetic strip, and the conveyor frame is also provided with a main transmission mechanism for driving the conveyor belt, a load monitoring mechanism for monitoring the conveyor belt load, multiple auxiliary transmission mechanisms for preventing material stockpiling and multiple magnetic locking mechanisms for emergency braking of the conveyor belt.

[0005] The main transmission mechanism and the load monitoring mechanism are both arranged at the ends of the conveying frame, and the magnetic locking mechanisms are evenly arranged on the conveying frame along the length direction of the conveying frame. An auxiliary transmission mechanism is provided between each pair of adjacent magnetic locking mechanisms, and the main transmission mechanism, the load monitoring mechanism and the auxiliary transmission mechanism are all connected to the controller.

[0006] Furthermore, the main transmission mechanism includes two driving wheels, two driven wheels and two driving hollow motors symmetrically distributed relative to the long axis of the conveyor frame, the driving hollow motors are connected to the controller, and the driving wheels and driven wheels are both adapted to the conveyor belt.

[0007] The driving wheel and the driven wheel are respectively arranged at the left and right ends of the conveying frame. The driving wheel is connected to the output shaft of the driving hollow motor on the same side thereof. The central axis of the driving hollow motor coincides with the central axis of the driving wheel.

[0008] Furthermore, the transmission magnetic strip is in the shape of a rectangular parallelepiped, and a plurality of the transmission magnetic strips are arranged in parallel along the length direction of the conveyor belt.

[0009] Furthermore, a driven wheel shaft for connecting to a driven wheel is fixed on the front and rear side walls of the right end of the conveying frame, and the driven wheel shaft is connected to the driven wheel on the same side thereof; a mounting hole is provided on the front and rear side walls of the left end of the conveying frame, and the driving hollow motor is fixed in the mounting hole.

[0010] Furthermore, the load monitoring mechanism includes two measuring central shafts, two measuring lasers and two four-quadrant photoelectric detectors. The two measuring central shafts are respectively fixed on the front and rear side walls of the left end of the conveyor frame. The free end of each measuring central shaft passes through the mounting hole on the same side and the axis of the driving hollow motor in turn, and then extends to the driving wheel on the same side.

[0011] A measuring laser and a four-quadrant photoelectric detector are provided on the measuring center axis. The four-quadrant photoelectric detector is connected to the controller. The measuring laser emits laser light and projects it onto the inner surface of the driving wheel, which is then reflected onto the four-quadrant photoelectric detector, thereby measuring the bending degree of the driving wheel and calculating the real-time load of the conveyor belt.

[0012] Furthermore, the magnetic locking mechanism includes two rotating outer wheels, two trigger inner wheels and two magnetic seats symmetrically distributed relative to the long axis of the conveyor frame. The two magnetic seats are respectively fixed on the front side wall and the rear side wall of the conveyor frame. The upper surface of the magnetic seat is connected to the transmission magnetic strip on the inner side of the conveyor belt. The magnetic seat is provided with a rotary switch for controlling whether magnetic force is applied to the upper surface of the magnetic seat.

[0013] A plurality of magnetic strip installation grooves are evenly arranged on the outer circumference of the rotating outer wheel. Rotating magnetic strips are arranged in the magnetic strip installation grooves. The upper surface of the rotating magnetic strips is flush with the outer circumference of the rotating outer wheel.

[0014] The outer circumferential surface of the rotating outer wheel is connected to the transmission magnetic strip on the inner side of the conveyor belt. A plurality of first blades are evenly arranged circumferentially on the inner circumferential surface of the rotating outer wheel. End covers for sealing are fixed on both end surfaces of the rotating outer wheel. The inner side of the rotating outer wheel is sealed with a non-Newtonian fluid.

[0015] The axis of the trigger inner wheel coincides with the axis of the rotating outer wheel, and an inner wheel shaft is provided on the axis of the trigger inner wheel. The inner wheel shaft passes through the end cover of one end of the rotating outer wheel and is connected to the rotary switch of the magnetic base. A plurality of second blades are evenly arranged on the outer circumference of the trigger inner wheel, and the first blades and the second blades do not contact each other.

[0016] Furthermore, the auxiliary transmission mechanism includes a hollow transmission disc motor, a hollow transmission roller, a brush disc and a hydraulic height adjustment shaft, and the transmission disc motor is connected to a controller.

[0017] The hydraulic height adjustment shaft is connected to a hydraulic control system, the hydraulic height adjustment shaft passes through the hollow part of the transmission roller, and the two ends of the hydraulic height adjustment shaft are respectively fixed on the front side wall and the rear side wall of the conveyor frame, and the hydraulic height adjustment shaft is evenly provided with multiple hydraulic output holes along the axial direction, and the hydraulic output holes are located directly below the conveyor belt.

[0018] The transmission disc motor is fixed on the inner side of the rear side wall of the conveying frame, and the brush disc is fixed on the inner side of the front side wall of the conveying frame. The output shaft of the transmission disc motor is connected to one end of the transmission roller, and the other end of the transmission roller is connected to the brush disc. A conductive area is provided on the brush disc.

[0019] The transmission roller is circumferentially provided with a plurality of square grooves, each of which is provided with a height-adjusting blade. The middle of the height-adjusting blade is concave and is wrapped with a plurality of turns of electromagnetic wire. The two joints of the electromagnetic wire are in contact with the brush disk. When the transmission roller rotates until the square groove is aligned with the hydraulic output hole, the height-adjusting blade in the square groove is pushed upward to lift the conveyor belt. When the two joints of the electromagnetic wire of the height-adjusting blade simultaneously contact the conductive area of the brush disk, the electromagnetic coil is energized, making the height-adjusting blade magnetic. The magnetic height-adjusting blade contacts the transmission magnetic strip, thereby realizing the adsorption and dragging operation of the conveyor belt.

[0020] Furthermore, the end surface of the transmission roller and the hydraulic height adjustment shaft are sealed by a sealing ring, and the material of the height adjustment blade is iron, silicon steel or nickel-iron alloy.

[0021] Furthermore, there are a plurality of conveying racks, and height-adjusting legs are fixed at four corners of each conveying rack, and adjacent conveying racks are partially overlapped and connected at different heights.

[0022] Compared with the prior art, the beneficial technical effects of the present invention are: (1) The present invention cleverly utilizes the characteristics of non-Newtonian fluids through the structural design of the magnetic locking mechanism to achieve mechanized and extremely high response rate local conveyor belt safety locking, effectively avoiding the problem of equipment failure or safety accidents caused by conveyor belt breakage.

[0023] (2) The present invention adopts hydraulic pressure to control the height of the local transmission belt through the structural design of the auxiliary transmission mechanism, and adopts the combination of the brush plate with the conductive area and the electromagnetic wire on the height adjustment blade, which is conducive to the dragging of local materials on the conveyor belt, avoids the accumulation of local materials and promotes the safety and stability of the overall transportation.

[0024] (3) The present invention uses a laser in conjunction with a four-quadrant photoelectric detector to monitor the bending degree of the driving wheel in real time and calculate the real-time load of the conveyor belt, which is conducive to achieving high-precision and high-dynamic load detection of the conveyor belt and avoiding equipment failure and safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of a conveyor belt feeding device.

[0026] Figure 2 This is the front view of the conveyor belt feeding device.

[0027] Figure 3 yes Figure 2 Sectional view along line AA.

[0028] Figure 4 It is a structural diagram of a conveyor belt feeding device (the conveyor belt is omitted).

[0029] Figure 5 It is a structural diagram of the auxiliary transmission mechanism (the transmission roller is omitted and only one height adjustment blade is retained).

[0030] Figure 6 This is a schematic diagram of the magnetic locking mechanism (with the end cover omitted).

[0031] Figure 7 This is a schematic diagram of a modified connection structure of Example 1, wherein the arrow indicates the direction of material transportation.

[0032] Explanation of the accompanying symbols: conveyor belt-1; conveyor frame-2; transmission magnetic strip-3; auxiliary transmission mechanism-4; driving wheel-5; driven wheel-6; driving hollow motor-7; measuring shaft-8; four-quadrant photoelectric detector-9; rotating outer wheel-10; triggering inner wheel-11; magnetic seat-12; rotating magnetic strip-13; first blade-14; inner wheel shaft-15; second blade-16; transmission disc motor-17; transmission roller-18; brush plate-19; hydraulic height adjustment shaft-20; conductive area-21; height adjustment blade-22; electromagnetic wire-23; height adjustment leg-24; driven wheel shaft-25; material-26; end cover-27. DETAILED DESCRIPTION

[0033] Example 1: Figure 1 and Figure 2 As shown, the conveyor belt feeding device includes a controller, a conveyor belt 1 and a conveyor frame 2. The conveyor belt 1 is arranged on the conveyor frame 2. A plurality of transmission magnetic strips 3 are provided on the inner side of the conveyor belt 1. In this embodiment, the transmission magnetic strips 3 are rectangular, and each transmission magnetic strip 3 is arranged in parallel along the length direction of the conveyor belt 1. The parallel arrangement includes two situations: adjacent transmission magnetic strips 3 are closely arranged and adjacent transmission magnetic strips 3 are spaced a certain distance apart.

[0034] The conveyor frame 2 is also equipped with a main transmission mechanism for driving the conveyor belt 1, a load monitoring mechanism for monitoring the load on the conveyor belt 1, multiple auxiliary transmission mechanisms 4 for preventing material 26 from backlogging, and multiple magnetic locking mechanisms for emergency braking of the conveyor belt 1. The main transmission mechanism and load monitoring mechanism are both located at the ends of the conveyor frame 2. The magnetic locking mechanisms are evenly distributed along the length of the conveyor frame 2. An auxiliary transmission mechanism 4 is located between each pair of adjacent magnetic locking mechanisms. The main transmission mechanism, load monitoring mechanism, and auxiliary transmission mechanism 4 are all connected to a controller.

[0035] In this embodiment, if Figure 3 As shown, the main transmission mechanism includes two driving pulleys 5, two driven pulleys 6, and two hollow drive motors 7, symmetrically arranged relative to the long axis of the conveyor frame 2. The hollow drive motors 7 are connected to a controller. Mounting holes are provided on the front and rear sidewalls of the left end of the conveyor frame 2, into which the hollow drive motors 7 are secured. The driving pulley 5 is connected to the output shaft of the hollow drive motor 7 on the same side, with the central axis of the hollow drive motor 7 coinciding with the central axis of the driving pulley 5. Driven pulley shafts 25 for connecting to the driven pulleys 6 are fixed to the front and rear sidewalls of the right end of the conveyor frame 2. The driven pulley shafts 25 are connected to the driven pulleys 6 on the same side. The conveyor belt 1 is annularly wound around the driving pulleys 5 and the driven pulleys 6, which are adapted to the conveyor belt 1. The hollow drive motors 7 drive the driving pulley 5 to rotate, thereby driving the transmission of the conveyor belt 1 and the rotation of the driven pulleys 6.

[0036] In this embodiment, the load monitoring mechanism includes two measuring shafts 8, two measuring lasers, and two four-quadrant photodetectors 9. The two measuring shafts 8 are respectively fixed to the front and rear side walls of the left end of the conveyor frame 2. The free end of each measuring shaft 8 passes through the mounting hole and the axis of the hollow motor 7 on the same side, and then extends to the driving wheel 5 on the same side.

[0037] A measuring laser and a four-quadrant photodetector 9 are located near the free end of the measuring axis 8. The four-quadrant photodetector 9 is connected to a controller. The measuring laser emits laser light that is projected onto the inner surface of the driving pulley 5. The light is then reflected back onto the four-quadrant photodetector 9, thereby measuring the curvature of the driving pulley 5 and calculating the real-time load of the conveyor belt 1. Specifically, the four-quadrant photodetector 9 transmits a detection signal to the controller, which determines the curvature of the driving pulley 5 and calculates the real-time load of the conveyor belt 1. When the real-time load of the conveyor belt 1 approaches or reaches a safety threshold, the controller shuts down the driving hollow motor 7, thereby stopping the transmission of the conveyor belt 1. This facilitates high-precision and high-dynamic load detection of the conveyor belt 1, preventing equipment failures and safety accidents.

[0038] In this embodiment, if Figure 4 and Figure 6 As shown, the magnetic locking mechanism includes two rotating outer wheels 10, two trigger inner wheels 11 and two magnetic seats 12 that are symmetrically distributed relative to the long axis of the conveyor frame 2. The two magnetic seats 12 are respectively fixed on the front side wall and the rear side wall of the conveyor frame 2. The upper surface of the magnetic seat 12 is connected to the transmission magnetic strip 3 on the inner side of the conveyor belt 1. The magnetic seat 12 is provided with a rotary switch for controlling whether magnetic force is applied to the upper surface of the magnetic seat 12.

[0039] The outer circumference of the rotating outer wheel 10 is uniformly provided with multiple magnetic strip mounting grooves. Rotating magnetic strips 13 are installed in the magnetic strip mounting grooves. The upper surface of the rotating magnetic strip 13 is flush with the outer circumference of the rotating outer wheel 10. The outer circumference of the rotating outer wheel 10 is connected to the transmission magnetic strip 3 on the inner side of the conveyor belt 1. The inner circumference of the rotating outer wheel 10 is uniformly provided with multiple first blades 14. Sealing end caps 27 are fixed to both end surfaces of the rotating outer wheel 10. A non-Newtonian fluid is sealed inside the rotating outer wheel 10.

[0040] like Figure 6 As shown, the axis of the trigger inner wheel 11 coincides with the axis of the rotating outer wheel 10. An inner wheel shaft 15 is disposed on the axis of the trigger inner wheel 11. The inner wheel shaft 15 passes through an end cap 27 at one end of the rotating outer wheel 10 and is connected to the rotary switch of the magnetic base 12. Multiple second blades 16 are evenly distributed circumferentially on the outer circumference of the trigger inner wheel 11. The first blades 14 and the second blades 16 do not contact each other, achieving motion separation between the rotating outer wheel 10 and the trigger inner wheel 11. The structural coordination between the first blades 14 on the rotating outer wheel 10 and the second blades 16 on the trigger inner wheel 11 facilitates the transmission of rotational force to the trigger inner wheel 11 through the non-Newtonian fluid between the two when the rotating outer wheel 10 experiences a sudden change in speed.

[0041] When the conveyor belt 1 is moving at a normal uniform speed, the rotating outer wheel 10 rotates synchronously at a uniform speed. At this time, the non-Newtonian fluid is flexible. Because the rotating outer wheel 10 does not directly contact the trigger inner wheel 11 during the movement, the flexible non-Newtonian fluid cannot drive the trigger inner wheel 11 to rotate when the rotating outer wheel 10 rotates at a uniform speed; however, when the conveyor belt 1 breaks and the speed of the conveyor belt 1 suddenly changes, the speed of the rotating outer wheel 10 suddenly changes. At this time, the non-Newtonian fluid becomes rigid and drives the trigger inner wheel 11 to rotate, and then the inner wheel shaft 15 rotates the rotary switch of the magnetic base 12, applying magnetic force on the upper surface of the magnetic base 12, and instantly magnetically locking the conveyor belt 1 to avoid equipment failure and safety accidents.

[0042] In this embodiment, if Figure 4 and Figure 5As shown, the auxiliary transmission mechanism 4 includes a hollow drive disc motor 17, a hollow drive roller 18, a brush plate 19, and a hydraulic height adjustment shaft 20. The drive disc motor 17 is connected to a controller. The hydraulic height adjustment shaft 20 is connected to a hydraulic control system and passes through the hollow portion of the drive roller 18. Its ends are fixed to the front and rear sidewalls of the conveyor frame 2. Multiple hydraulic output holes for hydraulic pressure are evenly distributed along the axial direction of the hydraulic height adjustment shaft 20. These hydraulic output holes are located directly below the conveyor belt 1. To prevent the release of hydraulic pressure, a sealing ring is provided between the end surface of the drive roller 18 and the hydraulic height adjustment shaft 20.

[0043] The transmission disc motor 17 is fixed to the inner side of the rear side wall of the conveyor frame 2, and the brush plate 19 is fixed to the inner side of the front side wall of the conveyor frame 2. The output shaft of the transmission disc motor 17 is connected to one end of the transmission roller 18, and the other end of the transmission roller 18 is connected to the brush plate 19. Figure 5 As shown, two fan-shaped conductive areas 21 are provided approximately in the middle of the upper half of the brush plate 19. In this embodiment, the entire brush plate 19 can be made of either metal or plastic. Notably, the conductive areas 21 of the brush plate 19 are made of graphite, which is easily replaceable after wear. The drive roller 18 is made of a non-conductive material, such as engineering plastic, to ensure that power is supplied only when both connectors of the electromagnetic wire 23 contact the conductive areas 21. When the real-time load of the conveyor belt 1 approaches or reaches a safety threshold, the controller shuts down the drive plate motor 17, thereby stopping the rotation of the drive roller 18.

[0044] The drive roller 18 is provided with multiple square grooves evenly spaced along its circumference. Each of the grooves houses a height adjustment blade 22. The center of the blade 22 is concave and is wrapped with multiple turns of electromagnetic wire 23. The two ends of the electromagnetic wire 23 contact the surface of the brush plate 19. In this embodiment, the blade 22 is in the shape of an I-shaped element and is made of iron, silicon steel, mild steel, or a nickel-iron alloy. When the two ends of the electromagnetic wire 23 on the blade 22 contact the conductive area 21 of the brush plate 19 and current is applied to the electromagnetic wire 23, the blade 22 becomes an electromagnet. This occurs because the magnetic field generated by the electromagnetic coil magnetizes the ferromagnetic material in the blade 22, enhancing the overall magnetic field strength. The magnetic strength of the blade 22 depends on factors such as the material properties of the blade 22, the number of turns of the coil, and the current intensity.

[0045] When the transmission roller 18 rotates until the square groove aligns with the hydraulic output hole, the height adjustment blade 22 in the square groove is pushed upward by the hydraulic pressure, lifting the conveyor belt 1. When the two connectors of the electromagnetic wire 23 of the height adjustment blade 22 simultaneously contact the conductive area 21 of the brush plate 19, the electromagnetic coil is energized, making the height adjustment blade 22 magnetic. The magnetic height adjustment blade 22 contacts the transmission magnetic strip 3, achieving the suction and drag operation of the conveyor belt 1. The auxiliary transmission mechanism 4 facilitates the dragging of localized material 26 on the conveyor belt 1, preventing localized material 26 from stockpiling and promoting the safety and stability of the overall transportation.

[0046] like Figure 7 As shown, as a variation of this embodiment, multiple conveyor racks 2 can be provided, each with height-adjustable legs 24 fixed at the four corners. Adjacent conveyor racks 2 are partially overlapped and connected at different heights. At the connection point between two adjacent conveyor racks 2, the conveyor rack 2 located upstream in the conveying direction is higher than the conveyor rack 2 located downstream in the conveying direction. The two conveyor racks 2 can be connected by a transition plate.

[0047] The operating principle of this embodiment is as follows: When the driving hollow motor 7 and the transmission disc motor 17 are started, the driving wheel 5 and the driven wheel 6 rotate at a constant speed, driving the conveyor belt 1 at a constant speed. At the same time, the height adjustment blades 22 on the transmission roller 18 suck and drag the conveyor belt 1, preventing local accumulation of material 26 on the conveyor belt 1 and promoting the safety and stability of the overall transportation. The measuring laser emits a laser in real time and projects it onto the inner surface of the driving wheel 5. The laser is then reflected by the four-quadrant photodetector 9, which transmits the detection signal to the controller. The controller determines the degree of curvature of the driving wheel 5 and calculates the real-time load of the conveyor belt 1. When the real-time load of the conveyor belt 1 approaches or reaches a safety threshold, the controller controls the shutdown of the driving hollow motor 7 and the transmission disc motor 17, thereby stopping the transmission of the conveyor belt 1.

[0048] When the local conveyor belt 1 suddenly breaks, the speed of the rotating outer wheel 10 here suddenly changes. At this time, the non-Newtonian fluid becomes rigid and drives the trigger inner wheel 11 here to rotate. Then, the inner wheel shaft 15 rotates the rotary switch of the magnetic base 12, applying magnetic force on the upper surface of the magnetic base 12, instantly magnetically locking the conveyor belt 1 to avoid equipment failure and safety accidents.

[0049] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A conveyor belt feeding device, characterized in that: The conveyor comprises a controller, a conveyor belt and a conveyor frame. The conveyor belt is arranged on the conveyor frame. A transmission magnetic strip is provided on the inner side of the conveyor belt. The conveyor frame is also provided with a main transmission mechanism for driving the conveyor belt, a load monitoring mechanism for monitoring the load of the conveyor belt, multiple auxiliary transmission mechanisms for preventing material accumulation, and multiple magnetic locking mechanisms for emergency braking of the conveyor belt. The main transmission mechanism and the load monitoring mechanism are both arranged at the end of the conveyor frame, the magnetic locking mechanisms are evenly arranged on the conveyor frame along the length direction of the conveyor frame, and an auxiliary transmission mechanism is provided between each pair of adjacent magnetic locking mechanisms. The main transmission mechanism, the load monitoring mechanism and the auxiliary transmission mechanism are all connected to the controller; The magnetic locking mechanism includes two rotating outer wheels, two trigger inner wheels and two magnetic seats symmetrically distributed relative to the long axis of the conveyor frame. The two magnetic seats are respectively fixed to the front side wall and the rear side wall of the conveyor frame. The upper surface of the magnetic seat is connected to the transmission magnetic strip on the inner side of the conveyor belt. The magnetic seat is provided with a rotary switch for controlling whether to apply magnetic force to the upper surface of the magnetic seat; A plurality of magnetic strip installation grooves are evenly arranged on the outer circumference of the rotating outer wheel, and a rotating magnetic strip is arranged in each of the magnetic strip installation grooves. The upper surface of the rotating magnetic strip is flush with the outer circumference of the rotating outer wheel; The outer circumferential surface of the rotating outer wheel is connected to the transmission magnetic strip on the inner side of the conveyor belt. A plurality of first blades are evenly arranged on the inner circumferential surface of the rotating outer wheel. End caps for sealing are fixed to both end surfaces of the rotating outer wheel. The inner side of the rotating outer wheel is sealed with a non-Newtonian fluid. The axis of the trigger inner wheel coincides with the axis of the rotating outer wheel, and an inner wheel shaft is provided on the axis of the trigger inner wheel. The inner wheel shaft passes through the end cover of one end of the rotating outer wheel and is connected to the rotary switch of the magnetic base. A plurality of second blades are evenly arranged on the outer circumference of the trigger inner wheel, and the first blades and the second blades do not contact each other.

2. The conveyor belt feeding device according to claim 1, characterized in that: The main transmission mechanism includes two driving wheels, two driven wheels and two driving hollow motors symmetrically distributed relative to the long axis of the conveyor frame, the driving hollow motors are connected to the controller, and the driving wheels and driven wheels are adapted to the conveyor belt; The driving wheel and the driven wheel are respectively arranged at the left and right ends of the conveying frame. The driving wheel is connected to the output shaft of the driving hollow motor on the same side thereof. The central axis of the driving hollow motor coincides with the central axis of the driving wheel.

3. The conveyor belt feeding device according to claim 2, characterized in that: The transmission magnetic strips are in the shape of a rectangular parallelepiped, and a plurality of the transmission magnetic strips are arranged in parallel along the length direction of the conveyor belt.

4. The conveyor belt feeding device according to claim 3, characterized in that: A driven wheel shaft for connecting to a driven wheel is fixed on the front and rear side walls of the right end of the conveying frame, and the driven wheel shaft is connected to the driven wheel on the same side thereof; a mounting hole is provided on the front and rear side walls of the left end of the conveying frame, and the driving hollow motor is fixed in the mounting hole.

5. The conveyor belt feeding device according to claim 4, characterized in that: The load monitoring mechanism includes two measuring central shafts, two measuring lasers, and two four-quadrant photoelectric detectors. The two measuring central shafts are respectively fixed to the front and rear side walls of the left end of the conveyor frame. The free end of each measuring central shaft passes through the mounting hole on the same side and the axis of the driving hollow motor in sequence, and then extends to the driving wheel on the same side. A measuring laser and a four-quadrant photoelectric detector are provided on the measuring center axis. The four-quadrant photoelectric detector is connected to the controller. The measuring laser emits laser light and projects it onto the inner surface of the driving wheel, which is then reflected onto the four-quadrant photoelectric detector, thereby measuring the bending degree of the driving wheel and calculating the real-time load of the conveyor belt.

6. The conveyor belt feeding device according to claim 5, characterized in that: The auxiliary transmission mechanism includes a hollow transmission disc motor, a hollow transmission roller, a brush disc and a hydraulic height adjustment shaft, and the transmission disc motor is connected to the controller; The hydraulic height adjustment shaft is connected to a hydraulic control system, passes through the hollow portion of the transmission roller, and the two ends of the hydraulic height adjustment shaft are respectively fixed to the front side wall and the rear side wall of the conveyor frame. The hydraulic height adjustment shaft is evenly provided with a plurality of hydraulic output holes along the axial direction, and the hydraulic output holes are located directly below the conveyor belt. The transmission disc motor is fixed to the inner side of the rear side wall of the conveyor frame, and the brush disc is fixed to the inner side of the front side wall of the conveyor frame. The output shaft of the transmission disc motor is connected to one end of the transmission roller, and the other end of the transmission roller is connected to the brush disc. The brush disc is provided with a conductive area. The transmission roller is circumferentially provided with a plurality of square grooves, each of which is provided with a height-adjusting blade. The middle of the height-adjusting blade is concave and is wrapped with a plurality of turns of electromagnetic wire. The two joints of the electromagnetic wire are in contact with the brush disk. When the transmission roller rotates until the square groove is aligned with the hydraulic output hole, the height-adjusting blade in the square groove is pushed upward to lift the conveyor belt. When the two joints of the electromagnetic wire of the height-adjusting blade simultaneously contact the conductive area of the brush disk, the electromagnetic coil is energized, making the height-adjusting blade magnetic. The magnetic height-adjusting blade contacts the transmission magnetic strip, thereby realizing the adsorption and dragging operation of the conveyor belt.

7. The conveyor belt feeding device according to claim 6, characterized in that: The end surface of the transmission roller and the hydraulic height adjustment shaft are sealed by a sealing ring, and the material of the height adjustment blade is iron, silicon steel or nickel-iron alloy.

8. The conveyor belt feeding device according to claim 7, characterized in that: There are a plurality of conveying racks, and height-adjusting legs are fixed at the four corners of each conveying rack. Adjacent conveying racks are partially overlapped and connected in staggered heights.

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