Cleaning device for belt conveyor and control method

Abstract

The application relates to a belt conveyor cleaning device and a control method, which comprises a beating roller and a cleaning roller arranged in sequence along the moving direction of the conveying belt, the beating roller comprises a rotatably arranged first roller shaft and at least one beating strip connected to the first roller shaft, the beating strip is in a strip shape and has flexibility, and the cleaning roller comprises a rotatably arranged second roller shaft and at least one scraper connected to the second roller shaft. The frozen layer is first broken by the beating roller, and the material adhered to the gap on the conveying belt surface is beaten out of the gap, and then the material adhered to the conveying belt is cleaned by the cleaning roller, so that the cleaning effect is ensured.

Description

Technical Field

[0001] This invention relates to the field of belt conveyors, and more specifically, to a cleaning device and control method for belt conveyors. Background Technology

[0002] Belt conveyors are widely used due to their good economic benefits and lower operating costs. However, prolonged operation inevitably leads to the accumulation of material residue on the belt surface. If not cleaned in time, flammable solid materials such as coal ash can rub against the conveyor's idlers, creating a fire hazard. Furthermore, wet materials can adhere to the belt surface, causing slippage and misalignment. Accumulated material also increases the weight of the belt, adding to the burden on the drive mechanism. Timely cleaning of the belt is an effective way to ensure the lifespan of the belt conveyor and reduce energy consumption. Belt cleaners, as an important component of belt conveyors, are mainly used to clean and remove accumulated material and debris from the belt surface.

[0003] Traditional scraper-type sweepers mainly consist of scrapers, support devices, and elastic buffer devices. Different scraper materials result in varying cleaning effects and application areas. In daily use, it has been found that traditional scraper-type sweepers cannot effectively clean material trapped in the tiny crystal cracks of conveyor belts. This is especially true when conveyor belts operate in cold, high-altitude regions, where belt icing is particularly severe. Traditional sweepers cannot remove the icy surface, which not only easily causes belt slippage but also fails to effectively remove material from the conveyor cracks. Therefore, there is an urgent need to develop a new type of sweeping device suitable for cold, icy regions. Summary of the Invention

[0004] The purpose of this invention is to provide a cleaning device and control method for a belt conveyor to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0006] The present invention provides a cleaning device for a belt conveyor, comprising a vibrating idler and a cleaning idler arranged sequentially along the moving direction of the conveyor belt. The vibrating idler includes a first roller shaft that is rotatably arranged and at least one vibrating strip connected to the first roller shaft. The vibrating strip is strip-shaped and flexible. The cleaning idler includes a second roller shaft that is rotatably arranged and at least one scraper connected to the second roller shaft.

[0007] In some embodiments of this application, the cleaning device for the belt conveyor further includes a first camera and a second camera for capturing images of the conveyor; the shooting area of ​​the first camera, the vibrating area of ​​the vibrating idler, the cleaning area of ​​the cleaning idler, and the shooting area of ​​the second camera are arranged sequentially along the moving direction of the conveyor belt; the cleaning device for the belt conveyor further includes a searchlight for illuminating the conveyor belt and a temperature sensor for detecting the temperature.

[0008] In some embodiments of this application, the cleaning device of the belt conveyor further includes a first lifting mechanism and a second lifting mechanism; the first lifting mechanism drives the vibrating idler roller to move up and down; the second lifting mechanism drives the cleaning idler roller to move up and down.

[0009] In some embodiments of this application, the vibrating bar is a chain.

[0010] In some embodiments of this application, the vibrating strips are provided at intervals along the axial direction of the first roller shaft to form multiple vibrating strip groups; the vibrating strip groups are provided at intervals along the circumferential direction of the first roller shaft.

[0011] In some embodiments of this application, in the axial direction of the first roller shaft, the length of the vibrating strip near the middle of the vibrating strip group is greater than the length of the vibrating strip near both ends, so that the ends of the plurality of vibrating strips in the vibrating strip group away from the first roller shaft are arc-shaped.

[0012] In some embodiments of this application, multiple scrapers are spaced apart along the circumferential direction of the second roller shaft; the scrapers extend along the axial direction of the second roller shaft, and in the axial direction of the first roller shaft, the width of the scraper near the middle is greater than the width near both ends, so that the ends of the scraper away from the first roller shaft are arc-shaped.

[0013] The present invention also provides a control method for a belt conveyor, which is applied to the cleaning device of the belt conveyor described in any of the above embodiments. The method includes first vibrating the conveyor belt with the vibrating strip of the vibrating idler roller, and then cleaning the conveyor belt with the scraper of the cleaning idler roller.

[0014] In some embodiments of this application, the ice area Sg1 reflected by the searchlight in the first camera shooting area is divided by the shooting area S1 of the first camera to obtain the ice amount ratio Pg1 on the conveyor belt surface before vibration, and the ice area Sg2 reflected by the searchlight in the second camera shooting area is divided by the shooting area S2 of the second camera to obtain the ice amount ratio Pg2 on the conveyor belt surface after vibration.

[0015] If the ambient temperature T is greater than the threshold Tg, the vibrating roller will not start; if the ambient temperature T is less than the threshold Tg, the spotlight will be turned on.

[0016] After the searchlight is turned on, if Pg1 is less than the threshold Ag, the vibrating roller will not start; if Pg1 is greater than the threshold Ag, the vibrating roller will start.

[0017] Speed ​​regulation mode of vibrating roller: If Pg1 is less than the threshold As and As is greater than Ag, the vibrating roller runs at speed N1. If Pg1 is greater than the threshold As, the speed of the vibrating roller is increased to N2. N2 is proportional to Pg1.

[0018] After the speed of the vibrating idler is increased to N2, if Pg2 is less than the threshold As, the speed of the cleaning idler is reduced to N1. If Pg2 is greater than the threshold As, the speed of the vibrating idler is increased sequentially according to Ng. After each increase of Ng, the size of Pg2 and the threshold As is judged until Pg2 is less than the threshold As, at which point the speed of the vibrating idler is reduced back to N1, or the speed of the vibrating idler is no longer increased when the speed of the vibrating idler reaches the rated speed Ne1.

[0019] The height adjustment mode of the vibrating roller: When the speed of the vibrating roller reaches the rated speed Ne1, if Pg2 is still greater than the threshold As, the first lifting mechanism drives the cleaning roller to increase from the initial height H1 to H2. H2 is proportional to Pg2. When Pg2 is less than the threshold As, the height of the vibrating roller is reduced back to H1, and the vibrating roller changes from the height adjustment mode to the speed adjustment mode.

[0020] In some embodiments of this application, the material adhesion area S` captured by the first camera is divided by the shooting area area S1 of the first camera to obtain the proportion of the amount of the material adhering to the surface of the conveyor belt before cleaning, and the material adhesion area S`` captured by the second camera is divided by the shooting area area S2 of the second camera to obtain the proportion of the amount of the material adhering to the surface of the conveyor belt after cleaning, P2.

[0021] Speed ​​control mode of sweeping roller: If P1 is less than threshold A, the sweeping roller runs at speed N3; if P1 is greater than threshold A, the sweeping roller speed is increased to N4. N4 is proportional to P1.

[0022] After the sweeping roller speed is increased to N4, if P2 is less than the threshold A, the sweeping roller speed is reduced to N3. If P2 is greater than the threshold A, the sweeping roller speed is increased sequentially by N'. After each increase of N', the size of P2 and the threshold A is judged until P2 is less than the threshold A. When this happens, the sweeping roller speed is reduced to N1 again, or the sweeping roller speed is reduced to the rated speed Ne2 and the sweeping roller speed is no longer increased.

[0023] Height adjustment mode of sweeping roller: When the sweeping roller reaches the rated speed Ne2, if P2 is still greater than the threshold A, the second lifting mechanism drives the sweeping roller to rise from the initial height H3 to H4. H4 is proportional to P2. When P2 is less than the threshold A, the height of the sweeping roller is lowered back to H3, and the sweeping roller changes from the height adjustment mode to the speed adjustment mode.

[0024] As can be seen from the above technical solutions, the embodiments of the present invention have at least the following advantages and positive effects:

[0025] In the cleaning device for the belt conveyor of this invention, the rotation of the vibrating idler roller causes at least one vibrating strip connected to the first roller shaft to vibrate the conveyor belt. This not only breaks up the ice layer but also dislodges materials adhering to the gaps on the conveyor belt surface, effectively cleaning these gaps. Furthermore, the vibrating strip makes point contact with the conveyor belt, easily removing any adhering substances. Simultaneously, the contact between the vibrating strip and the conveyor belt is flexible, allowing it to adhere to the conveyor belt surface after vibration, reducing damage to the conveyor belt.

[0026] Then, by rotating the cleaning idler roller, at least one scraper connected to the second roller shaft sweeps away the material adhering to the conveyor belt. After the ice layer is broken up by the vibrating idler roller, it is ensured that there is no slippage between the scraper and the conveyor belt during the cleaning process.

[0027] In the control method of the belt conveyor in this embodiment of the invention, the ice layer is first broken by the vibrating idler roller, and the material adhering to the gaps on the surface of the conveyor belt is vibrated out of the gaps. Then, the material adhering to the conveyor belt is swept away by the cleaning idler roller to ensure the cleaning effect. Attached Figure Description

[0028] Various objects, features, and advantages of the invention will become more apparent from the following detailed description of preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are merely illustrative of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts.

[0029] in:

[0030] Figure 1 This is a perspective view of a cleaning device for a belt conveyor according to an embodiment of the present invention.

[0031] Figure 2 yes Figure 1 A three-dimensional view of the vibrating rollers in the image.

[0032] Figure 3 yes Figure 2 Side view.

[0033] Figure 4 yes Figure 1 A 3D view of the cleaning rollers in the image.

[0034] Figure 5 yes Figure 2 An axial sectional view of the vibrating roller in the image.

[0035] Figure 6 yes Figure 4Axial sectional view of the cleaning roller in the image.

[0036] Figure 7 yes Figure 1 A 3D view of the first camera, searchlight, and temperature sensor in the image.

[0037] The reference numerals in the attached drawings are explained as follows: 11, frame; 12, roller; 13, conveyor belt; 2, vibrating idler; 21, first roller shaft; 22, vibrating strip; 3, cleaning idler; 31, second roller shaft; 32, scraper; 41, first camera; 42, second camera; 5, searchlight; 6, temperature sensor; 71, first lifting mechanism; 72, second lifting mechanism; 8, support frame. Detailed Implementation

[0038] Although the invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the invention and is not intended to limit the invention to what is described herein.

[0039] Therefore, a feature pointed out in this specification is used to illustrate one feature of one embodiment of the invention, and does not imply that every embodiment of the invention must have the described feature. Furthermore, it should be noted that this specification describes many features. While certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0040] Please see Figures 1 to 4 The belt conveyor includes a frame 11, a roller 12 rotatably mounted on the frame 11, and a conveyor belt 13 wound around the roller 12. When the roller 12 rotates, it drives the conveyor belt 13 to move for conveying.

[0041] Please see Figures 1 to 5 The present invention provides a cleaning device for a belt conveyor. The cleaning device for the belt conveyor includes a vibrating roller 2 and a cleaning roller 3 arranged sequentially along the moving direction of the conveyor belt 13. That is, the same area on the conveyor belt 13 passes through the vibrating roller 2 and then the cleaning roller 3 during the movement.

[0042] The vibrating roller 2 includes a first roller shaft 21 that is rotatably disposed and at least one vibrating strip 22 connected to the first roller shaft 21. The vibrating strip 22 is strip-shaped and flexible. The cleaning roller 3 includes a second roller shaft 31 that is rotatably disposed and at least one scraper 32 connected to the second roller shaft 31.

[0043] First, the vibration roller 2 rotates, causing at least one vibration strip 22 connected to the first roller shaft 21 to vibrate the conveyor belt 13. This not only breaks up the ice layer but also vibrates out any material adhering to the gaps on the surface of the conveyor belt 13, effectively cleaning the gaps on the surface of the conveyor belt 13. Furthermore, the vibration strip 22 makes point contact with the conveyor belt 13, which easily shakes off any adhering substances from the surface of the conveyor belt 13. At the same time, the contact between the vibration strip 22 and the conveyor belt 13 is flexible, allowing it to adhere to the surface of the conveyor belt 13 after vibration, reducing damage to the conveyor belt 13.

[0044] Then, by rotating the cleaning roller 3, at least one scraper 32 connected to the second roller shaft 31 sweeps away the material adhering to the conveyor belt 13. After the ice layer is broken up by the vibrating roller 2, it is ensured that there is no slippage between the scraper 32 and the conveyor belt during the cleaning process.

[0045] Please see Figure 2 and Figure 3 In this embodiment, the vibrating bar 22 is a chain, and the chain is formed by multiple interlocking chain links. The chain length is equal to the distance from the conveyor belt 13 to the first roller shaft 21. After vibration, the chain links near the conveyor belt 13 rebound due to the reaction force, and the chain will not continuously contact the conveyor belt, thus minimizing damage to the conveyor belt 13 during vibration. In other embodiments, the vibrating bar 22 can also be a steel wire rope.

[0046] Multiple sets of vibrating strips 22 are arranged at intervals along the axial direction of the first roller shaft 21, forming vibrating strip 22 groups. Multiple sets of vibrating strip 22 groups are arranged at intervals along the circumferential direction of the first roller shaft 21. Vibrating efficiency is ensured by multiple sets of vibrating strips 22 groups.

[0047] Please see Figure 4 In this embodiment, the scraper 32 has a plate-like structure and extends along the axial direction of the second roller shaft 31. Multiple scrapers 32 are spaced apart along the circumferential direction of the second roller shaft 31. Multiple scrapers 32 ensure cleaning efficiency. The scrapers 32 can be made of polyurethane, which has advantages such as good wear resistance, good resilience, and is less likely to damage the conveyor belt 13.

[0048] Please see Figure 5 In this embodiment, the belt conveyor is a tubular belt conveyor. The conveyor belt 13 of the tubular belt conveyor has an arc-shaped cross-section. In the axial direction of the first roller shaft 21, the length of the vibrating strip 22 near the middle of the vibrating strip 22 group is greater than the length of the vibrating strip 22 near both ends, so that the ends of the multiple vibrating strips 22 in the vibrating strip 22 group away from the first roller shaft 21 are arc-shaped to adapt to the conveyor belt 13 with an arc-shaped cross-section. The vibrating strip 22 can effectively vibrate to the arc apex position to ensure the vibration effect.

[0049] Please see Figure 6In the axial direction of the first roller shaft 21, the width of the scraper 32 near the middle is greater than the width near the two ends, so that the end of the scraper 32 away from the first roller shaft 21 is arc-shaped to adapt to the conveyor belt 13 with an arc-shaped cross section. The scraper 32 can effectively clean the arc apex position to ensure the vibration effect.

[0050] Please see Figure 1 and Figure 6 The cleaning device for the belt conveyor also includes a first camera 41 and a second camera 42 for capturing images of the conveyor belt. The shooting area of ​​the first camera 41, the vibration area of ​​the vibration roller 2, the cleaning area of ​​the cleaning roller 3, and the shooting area of ​​the second camera 42 are sequentially arranged along the moving direction of the conveyor belt 13. The first camera 41 is used to capture the surface ice formation and material accumulation of the conveyor belt 13 before vibration and cleaning. The second camera 42 is used to capture the surface ice formation and material accumulation of the conveyor belt 13 after vibration and cleaning.

[0051] The cleaning device for the belt conveyor also includes a searchlight 5 for illuminating the conveyor belt 13 and a temperature sensor 6 for detecting the temperature. When the searchlight 5 shines on the conveyor belt 13, the ice layer on the surface of the conveyor belt 13 reflects light, and the icing condition on the surface of the conveyor belt 13 is determined by the area of ​​reflection.

[0052] The cleaning device for the belt conveyor also includes a first lifting mechanism 71 and a second lifting mechanism 72. The first lifting mechanism 71 drives the vibrating idler roller 2 to rise and fall, and the second lifting mechanism 72 drives the cleaning idler roller 3 to rise and fall. Raising the height of the vibrating idler roller 2 through the first lifting mechanism 71 increases the vibrating force, and lowering the height of the vibrating idler roller 2 decreases the vibrating force. Raising the height of the cleaning idler roller 3 through the second lifting mechanism 72 increases the cleaning force, and lowering the height of the cleaning idler roller 3 decreases the cleaning force. Furthermore, raising the height of the cleaning idler roller 3 avoids the problem of the scraper 32 failing to effectively contact the conveyor belt 13 due to wear after prolonged use, thus extending the service life of the scraper 32.

[0053] In this embodiment, both the first lifting mechanism 71 and the second lifting mechanism 72 are electric push rods. The two ends of the first roller shaft 21 are rotatably connected to two first bearing seats, and the electric push rod is connected to the two first bearing seats. The two ends of the second roller shaft 31 are rotatably connected to two second bearing seats, and the electric push rod is connected to the two second bearing seats.

[0054] The cleaning device of the belt conveyor also includes a drive motor, which drives the vibrating roller 2 and the cleaning roller 3 to rotate via belt drive. The cleaning device of the belt conveyor also includes a bracket 8, on which the vibrating roller 2, the cleaning roller 3, the drive motor, the first lifting mechanism 71, the second lifting mechanism 72, and the second camera 42 are all mounted. The first camera 41, the lighting lamp, and the temperature sensor 6 are all mounted on the frame 11.

[0055] The present invention also provides a control method for a belt conveyor. The control method is applied to the cleaning device of the belt conveyor in any of the above embodiments. The control method includes first vibrating the conveyor belt 13 by the vibrating strip 22 of the vibrating roller 2. The vibrating roller 2 breaks up the ice layer and vibrates the material adhering to the gaps on the surface of the conveyor belt 13 out of the gaps. Then, the scraper 32 of the cleaning roller 3 cleans the conveyor belt 13 to remove the material adhering to the conveyor belt 13 and ensure the cleaning effect.

[0056] The ice area Sg1 reflected by the searchlight 5 in the first camera's shooting area is divided by the shooting area S1 of the first camera 41 to obtain the proportion of ice on the surface of the conveyor belt 13 before vibration, Pg1. The ice area Sg2 reflected by the searchlight 5 in the second camera's shooting area is divided by the shooting area S2 of the second camera 42 to obtain the proportion of ice on the surface of the conveyor belt 13 after vibration, Pg2.

[0057] If the ambient temperature T is greater than the threshold Tg, the vibrating roller 2 will not start. If the ambient temperature T is less than the threshold Tg, the spotlight 5 will be turned on. Tg can be 5℃. When T equals the threshold Tg, the operation can be adjusted as needed.

[0058] After turning on the spotlight 5, if Pg1 is less than the threshold Ag, the vibrating roller 2 will not start; if Sg is greater than the threshold Ag, the vibrating roller 2 will start. Ag can be 5%. The case where Pg1 equals the threshold Ag can be adjusted as needed.

[0059] Speed ​​control mode of vibrating roller 2: If Pg1 is less than the threshold As and As is greater than Ag, As can be 10%, vibrating roller 2 runs at speed N1. If Pg1 is greater than the threshold As, the speed of vibrating roller 2 is increased to N2. N2 is proportional to Pg1. That is to say, N2 increases as the proportion of Pg1 increases.

[0060] After the speed of the vibrating roller 2 is increased to N2, if Pg2 is less than the threshold As, the speed of the cleaning roller 3 is reduced to N1. If Pg2 is greater than the threshold As, the speed of the vibrating roller 2 increases sequentially by Ng. After each increase of Ng, the value of Pg2 and the threshold As is checked until Pg2 is less than the threshold As, at which point the vibrating roller 2 reduces its speed back to N1, or the speed of the vibrating roller 2 stops increasing when it reaches the rated speed Ne1. The case where Pg2 equals the threshold As can be adjusted as needed.

[0061] Height adjustment mode of vibrating roller 2: When the speed of vibrating roller 2 reaches the rated speed Ne1, if Pg2 is still greater than the threshold As, the first lifting mechanism 71 drives the sweeping roller 3 to rise from the initial height H1 to H2. H2 is proportional to Pg2. When Pg2 is less than the threshold As, the height of vibrating roller 2 is lowered back to H1, and vibrating roller 2 changes from height adjustment mode to speed adjustment mode.

[0062] The rotational speed and height of the vibrating roller 2 are adjusted by comparing the image information from the first camera 41 and the second camera 42. When adjusting the rotational speed of the vibrating roller 2 is sufficient to achieve the ice-breaking effect, the height adjustment mode is not activated. Only when the vibrating roller 2 fails to achieve the ice-breaking effect at its rated rotational speed is the height adjustment mode activated to enhance the vibration effect. This allows for adjusting the rotational speed of the vibrating roller 2 based on the icing condition of the conveyor belt 13, minimizing wasted effort and saving energy.

[0063] The percentage of material adhering to the surface of the conveyor belt 13 before cleaning is obtained by dividing the material adhesion area S' captured by the first camera 41 by the area S1 captured by the first camera 41. The percentage of material adhering to the surface of the conveyor belt 13 after cleaning is obtained by dividing the material adhesion area S'' captured by the second camera 42 by the area S2 captured by the second camera 42.

[0064] Speed ​​control mode of sweeping roller 3: If P1 is less than threshold A (which can be 15%), sweeping roller 3 runs at speed N3. If P1 is greater than threshold A, sweeping roller 3 runs at speed N4, and N4 is proportional to P1. The speed of P1 equal to threshold A can be adjusted as needed.

[0065] After the speed of the sweeping roller 3 is increased to N4, if P2 is less than the threshold A, the speed of the sweeping roller 3 is reduced to N3. If P2 is greater than the threshold A, the speed of the sweeping roller 3 is increased sequentially by N'. After each increase of N', the size of P2 and the threshold A is judged until P2 is less than the threshold A. When this happens, the sweeping roller 3 is reduced to N1 again. Or, when the speed of the sweeping roller 3 reaches the rated speed Ne2, the speed of the sweeping roller 3 stops increasing.

[0066] Height adjustment mode of sweeping roller 3: When the speed of sweeping roller 3 reaches the rated speed Ne2, if P2 is still greater than the threshold A, the second lifting mechanism 72 drives sweeping roller 3 to rise from the initial height H3 to H4. H4 is proportional to P2. When P2 is less than the threshold A, the height of sweeping roller 3 is lowered back to H3, and sweeping roller 3 changes from height adjustment mode to speed adjustment mode.

[0067] The speed and height of the cleaning roller 3 are adjusted by comparing the image information from the first camera 41 and the second camera 42. When adjusting the speed of the cleaning roller 3 achieves the desired cleaning effect, the height adjustment mode is not activated. Only when the cleaning roller 3 fails to achieve the desired cleaning effect at its rated speed is the height adjustment mode activated to enhance the cleaning effect. This allows the speed of the cleaning roller 3 to be adjusted according to the material adhesion on the conveyor belt 13 surface, minimizing wasted effort and saving energy. Simultaneously, the height adjustment mode is a method to ensure increased cleaning force after the scraper 32 wears down. When the scraper 32 is worn, increasing the speed is no longer effective in increasing the cleaning force; in this case, the cleaning height needs to be increased to allow the scraper 32 to re-engage with the conveyor belt.

[0068] The cleaning device and control method for the belt conveyor of the present invention can effectively solve the problems of wet material adhesion and cleaning difficulties caused by ice formation on the conveyor belt 13 in cold regions. At the same time, by using image recognition technology, the vibration roller 2 and the cleaning roller 3 can adjust their speed and height according to the distribution and area of ​​ice and attached materials on the surface of the conveyor belt 13, thereby enhancing the cleaning effect while saving energy.

[0069] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A control method of a belt conveyor, applied to a cleaning device of a belt conveyor, characterized by, The cleaning device of the belt conveyor comprises: a beating roller and a cleaning roller arranged in sequence along the moving direction of the conveyor belt, the beating roller comprises a first roller shaft rotatably arranged and at least one beating strip connected to the first roller shaft, the beating strip is in strip shape and has flexibility, and the cleaning roller comprises a second roller shaft rotatably arranged and at least one scraper connected to the second roller shaft; the cleaning device of the belt conveyor further comprises a first camera and a second camera for shooting the conveyor; the cleaning device of the belt conveyor further comprises a first lifting mechanism and a second lifting mechanism; The method comprises: First, the beating strip of the beating roller beats the conveyor belt, and then the scraper of the cleaning roller cleans the conveyor belt; Wherein, the ratio of the icing area Sg1 of the first camera shooting area reflected by the searchlight to the shooting area S1 of the first camera is Pg1, and the ratio of the icing area Sg2 of the second camera shooting area reflected by the searchlight to the shooting area S2 of the second camera is Pg2; If the environmental temperature T is greater than the threshold value Tg, the beating roller is not started; if the environmental temperature T is less than the threshold value Tg, the searchlight is turned on; After the searchlight is turned on, if Pg1 is less than the threshold value Ag, the beating roller is still not started, and if Pg1 is greater than the threshold value Ag, the beating roller is started; The speed regulation mode of the beating roller: if Pg1 is less than the threshold value As, As is greater than Ag, the beating roller runs at a speed N1, and if Pg1 is greater than the threshold value As, the speed of the beating roller is increased to N2, and N2 is proportional to Pg1; After the speed of the beating roller is increased to N2, if Pg2 is less than the threshold value As, the speed of the cleaning roller is reduced to N1, and if Pg2 is greater than the threshold value As, the speed of the beating roller is increased by Ng in turn, and after the speed of the beating roller is increased by Ng each time, the size of Pg2 and the threshold value As is judged, until Pg2 is less than the threshold value As, the speed of the beating roller is reduced to N1, or the speed of the beating roller reaches the rated speed Ne1, and the speed of the beating roller is no longer increased; The height regulation mode of the beating roller: when the speed of the beating roller reaches the rated speed Ne1, if Pg2 is still greater than the threshold value As, the first lifting mechanism drives the cleaning roller to increase from the initial height H1 to H2, H2 is proportional to Pg2, and until Pg2 is less than the threshold value As, the height of the beating roller is reduced to H1, and the beating roller is switched from the height regulation mode to the speed regulation mode.

2. The control method of the belt conveyor according to claim 1, characterized by The shooting area of the first camera, the beating area of the beating roller, the cleaning area of the cleaning roller and the shooting area of the second camera are arranged in sequence along the moving direction of the conveyor belt; The cleaning device of the belt conveyor further comprises a searchlight for irradiating the conveyor belt and a temperature sensor for detecting the temperature.

3. The control method of the belt conveyor according to claim 1, wherein The first lifting mechanism drives the beating roller to lift; The second lifting mechanism drives the cleaning roller to lift.

4. The control method of the belt conveyor according to claim 1, characterized by The beating strip is a chain.

5. The control method of the belt conveyor according to claim 1, characterized by, The beating strip is provided with a plurality of beating strip groups in the axial direction of the first roller shaft. The groups of beating strips are arranged at intervals along the circumferential direction of the first roller shaft.

6. The control method of the belt conveyor according to claim 5, characterized by In the axial direction of the first roller shaft, the lengths of the beating strips near the middle of the group of beating strips are greater than the lengths of the beating strips near the two ends, so that the plurality of beating strips in the group of beating strips are arc-shaped away from the ends of the first roller shaft.

7. The control method of the belt conveyor according to claim 1, characterized by The groups of beating strips are arranged at intervals along the circumferential direction of the first roller shaft. In the axial direction of the first roller shaft, the lengths of the beating strips near the middle of the group of beating strips are greater than the lengths of the beating strips near the two ends, so that the plurality of beating strips in the group of beating strips are arc-shaped away from the ends of the first roller shaft.

8. The control method of the belt conveyor according to claim 1, characterized by, The first camera captures the area S` of the material sticking area, and the second camera captures the area S`` of the material sticking area. The ratio of the area S` of the material sticking area captured by the first camera to the area S1 of the first camera is P1, and the ratio of the area S`` of the material sticking area captured by the second camera to the area S2 of the second camera is P2. The speed regulation mode of the cleaning roller: if P1 is less than threshold A, the cleaning roller runs at speed N3; if P1 is greater than threshold A, the cleaning roller speed increases to N4, and N4 is proportional to P1. After the cleaning roller speed increases to N4, if P2 is less than threshold A, the cleaning roller speed decreases to N3; if P2 is greater than threshold A, the cleaning roller speed increases by N` at a time, and after each time the cleaning roller speed increases by N`, the size of P2 and threshold A is judged, until P2 is less than threshold A, the cleaning roller speed decreases to N1, or the cleaning roller speed reaches the rated speed Ne2, the cleaning roller speed no longer increases. The height regulation mode of the cleaning roller: when the cleaning roller speed reaches the rated speed Ne2, if P2 is still greater than threshold A, the second lifting mechanism drives the cleaning roller to increase from the initial height H3 to H4, H4 is proportional to P2, until P2 is less than threshold A, the cleaning roller height decreases to H3, and the cleaning roller changes from the height regulation mode to the speed regulation mode.

Images