Conveying belt feeding device

Abstract

The invention belongs to the technical field of conveying devices, and particularly discloses a conveying belt feeding device. The problem that equipment failures are caused when the local load of a conveyor belt exceeds a safety threshold value is solved. Comprising a controller, a conveying belt and a conveying frame, the conveying belt is arranged on the conveying frame, a transmission magnetic strip is arranged on the inner side face of the conveying belt, and a main transmission mechanism, a load monitoring mechanism, an auxiliary transmission mechanism and a magnetic locking mechanism are further arranged on the conveying frame; the main transmission mechanism and the load monitoring mechanism are both arranged at the end of the conveying frame, the magnetic locking mechanisms are evenly arranged on the conveying frame in the length direction of the conveying frame, an auxiliary transmission mechanism is arranged between each pair of adjacent magnetic locking mechanisms, and the main transmission mechanism, the load monitoring mechanism and the auxiliary transmission mechanisms are all connected with the controller. According to the invention, real-time high-precision load detection of the conveyor belt and safe locking of a local conveyor belt can be realized, and the problems of equipment failure and safety accidents caused by breakage of the conveyor belt can be effectively avoided.

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] In the process of ultra-long-distance conveyor belt transportation, traditional belt conveyor systems face many challenges and hidden dangers. Especially in scenarios with large conveying angles and steep slopes, materials are prone to slide down due to gravity, resulting in concentrated accumulation of materials in a certain section. Such accumulation will not only increase the local load pressure, but also cause the belt to break or the support structure to fail when the rated load of the conveyor belt design is exceeded, which may lead 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, which effectively solves the problem of equipment failure caused by the conveyor belt when the local load exceeds 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, a plurality of auxiliary transmission mechanisms for preventing material stockpiling and a plurality of 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 that are symmetrically distributed front and back relative to the long axis of the conveyor belt. The driving hollow motor is 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 axle for connecting the driven wheel is fixed on the front and rear side walls of the right end of the conveying frame, and the driven wheel axle 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 axes, two measuring lasers and two four-quadrant photoelectric detectors. The two measuring central axes are respectively fixed on the front and rear side walls of the left end of the conveying frame. The free end of each measuring central axis 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 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 which are symmetrically distributed front and back relative to the long axis of the conveyor belt. 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 circumferential surface of the rotating outer wheel in the circumferential direction, and a rotating magnetic strip is arranged in the magnetic strip installation groove, and the upper surface of the rotating magnetic strip is flush with the outer circumferential surface 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, and a plurality of first blades are evenly arranged 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, and 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, 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 rotating switch of the magnetic base, a plurality of second blades are evenly arranged on the outer circumferential surface 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 a plurality of hydraulic output holes are evenly arranged on the hydraulic height adjustment shaft 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, 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, the other end of the transmission roller is connected to the brush disc, and a conductive area is provided on the brush disc.

[0019] A plurality of square grooves are evenly arranged circumferentially on the transmission roller, and a height-adjusting blade is arranged in the square groove. The middle part of the height-adjusting blade is concave and a plurality of turns of electromagnetic wire are wound around the middle part of the height-adjusting blade. 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 up the conveyor belt. When the two joints of the electromagnetic wire of the height-adjusting blade contact the conductive area of ​​the brush disk at the same time, the electromagnetic coil is energized to make the height-adjusting blade magnetic. The magnetic height-adjusting blade contacts the transmission magnetic strip to realize the adsorption and dragging operation of the conveyor belt.

[0020] Furthermore, the end surface of the driving roller and the hydraulic height adjustment shaft are sealed via 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, so that adjacent conveying racks are partially overlapped and connected in staggered heights.

[0022] Compared with the prior art, the beneficial technical effects of the present invention are: (1) The present invention, through the structural design of the magnetic locking mechanism, cleverly utilizes the characteristics of non-Newtonian fluids to achieve mechanized and extremely high response rate local conveyor belt safety locking, effectively avoiding 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 coordination of the brush plate with a 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 failures and safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 It 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 schematic diagram of the structure 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 It is a schematic diagram of a connection structure of a variation of Example 1, wherein the arrow indicates the direction of material transportation.

[0032] Explanation of the reference numerals: 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 center 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 disc-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 arranged on the inner side of the conveyor belt 1. In the present embodiment, the transmission magnetic strips 3 are in the shape of a rectangular parallelepiped. 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 provided with a main transmission mechanism for driving the conveyor belt 1, a load monitoring mechanism for monitoring the load of the conveyor belt 1, a plurality of auxiliary transmission mechanisms 4 for preventing the accumulation of materials 26, and a plurality of magnetic locking mechanisms for emergency braking of the conveyor belt 1. The main transmission mechanism and the load monitoring mechanism are both arranged at the end of the conveyor frame 2, and the magnetic locking mechanisms are evenly arranged on the conveyor frame 2 along the length direction of the conveyor frame 2. An auxiliary transmission mechanism 4 is arranged between each pair of adjacent magnetic locking mechanisms, and the main transmission mechanism, the load monitoring mechanism and the auxiliary transmission mechanism 4 are all connected to the controller.

[0035] In this embodiment, if Figure 3 As shown, the main transmission mechanism includes two driving wheels 5, two driven wheels 6 and two driving hollow motors 7 which are symmetrically distributed front and back relative to the long axis of the conveyor belt 1, and the driving hollow motor 7 is connected to the controller. A mounting hole is provided on the front and rear side walls of the left end of the conveyor frame 2, and the driving hollow motor 7 is fixed in the mounting hole. The driving wheel 5 is connected to the output shaft of the driving hollow motor 7 on the same side, and the central axis of the driving hollow motor 7 coincides with the central axis of the driving wheel 5. The front and rear side walls of the right end of the conveyor frame 2 are fixed with a driven wheel shaft 25 for connecting the driven wheel 6, and the driven wheel shaft 25 is connected to the driven wheel 6 on the same side. The conveyor belt 1 is annularly wound around the driving wheel 5 and the driven wheel 6, and the driving wheel 5 and the driven wheel 6 are adapted to the conveyor belt 1. The driving wheel 5 is driven to rotate by driving the hollow motor 7, thereby driving the conveyor belt 1 to transmit and the driven wheel 6 to rotate.

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

[0037] A measuring laser and a four-quadrant photoelectric detector 9 are provided near the free end of the measuring center axis 8. The four-quadrant photoelectric detector 9 is connected to the controller. The measuring laser emits laser light and projects it onto the inner surface of the driving wheel 5, which is then reflected onto the four-quadrant photoelectric detector 9, thereby measuring the bending degree of the driving wheel 5 and calculating the real-time load of the conveyor belt 1. That is, the four-quadrant photoelectric detector 9 transmits the detection signal to the controller, which determines the bending degree 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 the safety threshold, the controller controls the closing of the driving hollow motor 7, thereby stopping the transmission of the conveyor belt 1, which is conducive to realizing high-precision and high-dynamic load detection of the conveyor belt 1 and avoiding equipment failure 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 which are symmetrically distributed front and back relative to the long axis of the conveyor belt 1. 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] A plurality of magnetic strip installation grooves are evenly arranged on the outer circumference of the rotating outer wheel 10, and a rotating magnetic strip 13 is arranged in the magnetic strip installation groove. The upper surface of the rotating magnetic strip 13 is flush with the outer circumference of the rotating outer wheel 10, and 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. A plurality of first blades 14 are evenly arranged on the inner circumference of the rotating outer wheel 10, and end caps 27 for sealing are fixed on both end surfaces of the rotating outer wheel 10, and 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, and an inner wheel shaft 15 is provided on the axis of the trigger inner wheel 11. The inner wheel shaft 15 passes through the end cover 27 at one end of the rotating outer wheel 10 and is connected to the rotary switch of the magnetic seat 12. A plurality of second blades 16 are evenly provided circumferentially on the outer circumferential surface of the trigger inner wheel 11, and the first blade 14 and the second blade 16 are not in contact with each other, so as to realize the motion separation between the rotating outer wheel 10 and the trigger inner wheel 11. The structural coordination of the first blade 14 on the rotating outer wheel 10 and the second blade 16 on the trigger inner wheel 11 facilitates the transmission of the rotational force to the trigger inner wheel 11 through the non-Newtonian fluid between the two when the speed of the rotating outer wheel 10 changes suddenly.

[0041] When the conveyor belt 1 moves normally at a 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, when the rotating outer wheel 10 rotates at a uniform speed, the flexible non-Newtonian fluid cannot drive the trigger inner wheel 11 to rotate; 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 rotation switch of the magnetic base 12, exerting 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 transmission disc motor 17, a hollow transmission roller 18, a brush plate 19 and a hydraulic height adjustment shaft 20, and the transmission disc motor 17 is connected to the controller. The hydraulic height adjustment shaft 20 is connected to a hydraulic control system, and the hydraulic height adjustment shaft 20 passes through the hollow part of the transmission roller 18, and the two ends of the hydraulic height adjustment shaft 20 are respectively fixed on the front side wall and the rear side wall of the conveyor frame 2. The hydraulic height adjustment shaft 20 is evenly provided with a plurality of hydraulic output holes for outputting hydraulic pressure along the axial direction, and the hydraulic output holes are located directly below the conveyor belt 1. In order to prevent the release of hydraulic pressure, the end surface of the transmission roller 18 and the hydraulic height adjustment shaft 20 are sealed by a sealing ring.

[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 at approximately the middle position of the upper half of the brush plate 19. In this embodiment, the brush plate 19 can be made of metal or plastic as a whole. It is worth noting that the conductive area 21 of the brush plate 19 is made of graphite, and the graphite of the conductive area 21 is easy to replace after wear; the transmission roller 18 is made of non-conductive material, such as engineering plastic, so that only when the two joints of the electromagnetic wire 23 contact the conductive area 21 at the same time can it be powered on. When the real-time load of the conveyor belt 1 approaches or reaches the safety threshold, the controller controls to turn off the transmission disc motor 17, thereby stopping the rotation of the transmission roller 18.

[0044] A plurality of square grooves are evenly arranged on the driving roller 18 along its circumferential direction, and a height adjustment blade 22 is arranged in the square groove. The middle part of the height adjustment blade 22 is concave and multiple turns of electromagnetic wire 23 are wound around the middle part of the height adjustment blade 22. The two joints of the electromagnetic wire 23 are in contact with the surface of the brush plate 19. In this embodiment, the height adjustment blade 22 is in the shape of an "I" character, and the material of the height adjustment blade 22 is iron, silicon steel, low carbon steel or nickel-iron alloy. When the two joints of the electromagnetic wire 23 on the height adjustment blade 22 are in contact with the conductive area 21 of the brush plate 19, the electromagnetic wire 23 is energized, and the height adjustment blade 22 will become an electromagnet. This is because the magnetic field generated by the electromagnetic coil after power is turned on magnetizes the ferromagnetic material in the height adjustment blade 22, thereby enhancing the overall magnetic field strength. The magnetic strength of the height adjustment blade 22 depends on factors such as the material properties of the height adjustment blade 22, the number of coil turns, and the current strength of the power supply.

[0045] When the transmission roller 18 rotates until the square groove is aligned with the hydraulic output hole, the height adjustment blade 22 in the square groove is pushed upward under the action of the hydraulic pressure to lift the conveyor belt 1; when the two joints 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, and the magnetic height adjustment blade 22 contacts the transmission magnetic strip 3 to achieve the adsorption and dragging operation of the conveyor belt 1. The auxiliary transmission mechanism 4 is conducive to the dragging of local materials 26 on the conveyor belt 1, avoiding the stockpiling of local materials 26 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, and height-adjusting legs 24 are fixed at the four angles of each conveyor rack 2, and adjacent conveyor racks 2 are partially overlapped and connected in a staggered manner. At the connection 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, and the two conveyor racks 2 can be transitionally connected by a transition plate.

[0047] The working 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 uniform speed, driving the conveyor belt 1 to transmit at a uniform speed. At the same time, the height adjustment blade 22 on the transmission roller 18 performs an adsorption and dragging operation on the conveyor belt 1 to avoid the accumulation of local materials 26 on the conveyor belt 1 and promote the safety and stability of the overall transportation; the measuring laser emits laser in real time and projects it on the inner surface of the driving wheel 5, and then reflects it to the four-quadrant photoelectric detector 9. The four-quadrant photoelectric detector 9 transmits the detection signal to the controller, and the controller determines the bending degree 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 the safety threshold, the controller controls to turn off 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 breaks suddenly, the speed of the rotating outer wheel 10 here changes suddenly. 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, and magnetic force is applied to the upper surface of the magnetic base 12, which instantly locks the conveyor belt 1 with magnetic force 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 protection scope of the present invention.

Claims

1. A conveyor belt feeding device, characterized in that: It includes a controller, a conveyor belt and a conveyor frame, wherein the conveyor belt is arranged on the conveyor frame, a transmission magnetic strip is arranged on the inner side of the conveyor belt, and 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, a plurality of auxiliary transmission mechanisms for preventing material accumulation, and a plurality of 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 conveying frame, the magnetic locking mechanisms are evenly arranged on the conveying frame along the length direction of the conveying frame, an auxiliary transmission mechanism is arranged 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; The magnetic locking mechanism comprises two rotating outer wheels, two triggering inner wheels and two magnetic seats which are symmetrically distributed front and back relative to the long axis of the conveyor belt. 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 to apply magnetic force on 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 the magnetic strip installation groove, and 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, and a plurality of first blades are evenly arranged on the inner circumferential surface of the rotating outer wheel. End caps for sealing are fixed on both end surfaces of the rotating outer wheel, and 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, 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 rotating switch of the magnetic base, a plurality of second blades are evenly arranged on the outer circumferential surface 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 that are symmetrically distributed front and back relative to the long axis of the conveyor belt, the driving hollow motors are connected to the controller, and the driving wheels and driven wheels are both 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 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.

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 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 a controller; 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 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 on the inner side of the rear side wall of the conveying frame, 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, the other end of the transmission roller is connected to the brush disc, and the brush disc is provided with a conductive area; A plurality of square grooves are evenly arranged circumferentially on the transmission roller, and a height-adjusting blade is arranged in the square groove. The middle part of the height-adjusting blade is concave and a plurality of turns of electromagnetic wire are wound around the middle part of the height-adjusting blade. 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 up the conveyor belt. When the two joints of the electromagnetic wire of the height-adjusting blade contact the conductive area of ​​the brush disk at the same time, the electromagnetic coil is energized to make the height-adjusting blade magnetic. The magnetic height-adjusting blade contacts the transmission magnetic strip to realize 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 driving roller and the hydraulic height adjustment shaft are sealed via 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 four angles of each conveying rack. Adjacent conveying racks are partially overlapped and connected in a staggered manner.

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