A laser apparatus for detecting longitudinal belt tear in a belt conveyor and method of use

Abstract

This invention discloses a laser detection device for longitudinal tear detection of belts in belt conveyors and its usage method, relating to the field of belt tear detection technology. It includes a fixed bracket, a laser module, and a controller. The controller is mounted on the front side of the outer wall of the fixed bracket, and the laser module is mounted on the upper side of the outer wall of the fixed bracket. The laser module is connected to the controller via a signal line. The laser module includes a laser emitter, a vision sensor, a chute, a slider, a laser motor, and an angle assembly. This invention, by installing the laser module, achieves multi-directional free detection, solving the problems of blind spots, low detection efficiency, and poor detection accuracy. It can dynamically identify tears on the belt surface, detect the belt from multiple angles, improve the detection accuracy of the device, and avoid manual secondary inspection.

Description

Technical Field

[0001] This invention relates to the field of belt tear detection technology, specifically to a laser detection device for longitudinal tear of a belt conveyor and its usage method. Background Technology

[0002] Belt conveyors are core logistics equipment in mining, thermal power plants, ports and metallurgical industries, responsible for transporting bulk materials such as ore and coal. Their continuous operation requires extremely high reliability. Once a longitudinal tear occurs in the belt, it will not only lead to production interruption, but also pose certain safety risks.

[0003] Fixed detection devices are usually deployed in the middle of the bottom surface of the belt, which cannot cover the side edge areas. When tears occur at the edge of the belt or at the joint undulation, they are difficult to detect. Because fixed detection devices cannot adaptively adjust the angle, they are prone to forming detection blind spots when dealing with belts with complex shapes.

[0004] Patent CN113320924B discloses a belt longitudinal tear detection device based on single-line lidar. The above patent enables timely detection of belt tears and issues warnings, preventing further tearing or even belt breakage and reducing economic losses.

[0005] The aforementioned patent fixes a lidar below the non-load-bearing surface of the belt and emits a laser beam obliquely upward along a field of view perpendicular to the belt's sliding direction. During the belt's uniform sliding process, it records the total time taken for the pulse to travel from emission to reflection from the object being measured, as well as the scanning angle. Combined with the laser propagation speed, it calculates the instantaneous contour coordinates of the belt's bottom surface. Then, combined with the belt's sliding speed, it extrapolates the position of the aforementioned contour information along the belt's sliding direction at equal time intervals, generating a continuous three-dimensional point cloud of the belt's non-load-bearing bottom surface. This constructs a three-dimensional model of the belt's bottom surface. By judging the smoothness anomalies of the three-dimensional model of the belt's bottom surface, it achieves the detection of belt tear locations. There is room for optimization in the belt detection range.

[0006] Therefore, this application proposes a laser detection device and method for longitudinal tear detection of belt conveyors for multi-directional free detection. Summary of the Invention

[0007] The purpose of this invention is to provide a laser detection device and method for longitudinal tear detection of belts in belt conveyors, so as to solve the technical problem of limited belt detection range mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a laser detection device for longitudinal tear of a belt conveyor, comprising a fixed bracket, a laser module and a controller, wherein the controller is installed on the front side of the outer wall of the fixed bracket, and the laser module is installed on the upper side of the outer wall of the fixed bracket, and the laser module is connected to the controller via a signal line;

[0009] The laser module includes: a laser emitter, a vision sensor, a slide, a slider, a laser motor, and an angle assembly;

[0010] A sliding groove is installed on the upper side of the outer wall of the fixed bracket. A slider is installed in the middle of the inner wall of the sliding groove. An angle component is installed on the upper side of the outer wall of the slider. The slider and the angle component are connected to the laser motor through a connecting shaft. A laser emitter is installed on the upper side of the outer wall of the angle component. A vision sensor is installed on the left side of the outer wall of the laser emitter. A laser motor is installed on the lower side of the outer wall of the fixed bracket. The laser emitter, the vision sensor, and the laser motor are connected to the controller through signal lines.

[0011] Preferably, the angle component includes: a first telescopic shaft, a second telescopic shaft, a first rotating shaft, a second rotating shaft, and an angle sensor;

[0012] A first telescopic shaft is installed on the upper side of the outer wall of the slider, a first rotating shaft is installed on the upper side of the outer wall of the first telescopic shaft, a second telescopic shaft is installed on the upper side of the outer wall of the rotating shaft, and a second rotating shaft is installed on the front side of the outer wall of the second telescopic shaft. The first telescopic shaft, the second telescopic shaft, the first rotating shaft, and the second rotating shaft are connected to the laser motor through a connecting shaft. An angle sensor is installed at the connection point between the first rotating shaft, the second rotating shaft, and the second telescopic shaft. The angle sensor is connected to the controller through a signal line.

[0013] Preferably, a dust removal module is installed on the left side of the outer wall of the angle component. The dust removal module includes: a storage box, a suction component, a first connecting pipe, a dust separation plate, and a dust removal motor.

[0014] A storage box is installed on the left side of the outer wall of the chute. A dustproof plate is installed on the upper side of the outer wall of the storage box. A suction component is installed on the lower side of the outer wall of the dustproof plate. The suction component is connected to the storage box through a first connecting pipe. A dust removal motor is installed on the rear side of the outer wall of the laser motor. The suction component is connected to the dust removal motor through a connecting shaft. The dust removal motor is connected to the controller through a signal line.

[0015] Preferably, a compensation module is installed on the upper side of the outer wall of the second telescopic shaft. The compensation module includes: a water tank, a nozzle, an atomizing component, a recovery pipe, a recovery component, a second connecting pipe, and a humidity sensor.

[0016] A water tank is installed on the rear side of the outer wall of the storage box, and a recycling component is installed in the middle of the inner wall of the storage box. The water tank is connected to the recycling component through a recycling pipe. A nozzle is installed on the upper side of the outer wall of the second telescopic shaft, and an atomizing component is installed on the upper side of the outer wall of the water tank. The atomizing component is connected to the nozzle through a second connecting pipe, and the atomizing component is connected to the dust removal motor through a connecting shaft. A humidity sensor is installed on the front side of the outer wall of the nozzle, and the humidity sensor is connected to the controller through a signal line.

[0017] Preferably, the fixed bracket has connecting modules installed on the front and rear sides of its outer wall. The connecting modules include: clamping blocks, locking devices, vibration sensors, and vibrators.

[0018] Clamping blocks are installed on the front and rear sides of the outer wall of the fixed bracket. A locking device is installed on the upper side of the outer wall of the clamping block. A vibration sensor is installed on the left side of the outer wall of the clamping block. A vibrator is installed at the joint between the inner wall of the fixed bracket and the slide groove. The vibration sensor and the vibrator are connected to the controller through a signal line.

[0019] Preferably, the suction assembly includes: a fan, a filter, a third telescopic shaft, and an infrared sensor;

[0020] A filter screen is installed on the lower side of the outer wall of the dustproof plate, and a third telescopic shaft is installed on the lower side of the outer wall of the dustproof plate. A fan is installed on the left side of the outer wall of the filter screen. The fan and the third telescopic shaft are connected to the dust removal motor through a connecting shaft. An infrared sensor is installed on the upper side of the outer wall of the dustproof plate, and the infrared sensor is connected to the controller through a signal line.

[0021] Preferably, the atomizing assembly includes: an atomizing chamber, a filter chamber, a piston, a push rod, a third connecting pipe, and a connecting valve;

[0022] An atomizing chamber is installed on the upper side of the outer wall of the water tank. The atomizing chamber is connected to the water tank through a connecting valve. The connecting valve is connected to the controller through a signal line. A filter chamber is installed on the rear side of the outer wall of the atomizing chamber. The atomizing chamber is connected to the filter chamber through a third connecting pipe. A piston is installed in the middle of the inner wall of the atomizing chamber. A push rod is installed on the front side of the outer wall of the piston. The push rod is connected to the dust removal motor through a connecting shaft.

[0023] Preferably, the recycling assembly includes: a filter cloth, a vacuum pump, a rinsing head, a fourth connecting pipe, a fifth connecting pipe, and a vacuum box;

[0024] A filter cloth is installed in the middle of the inner wall of the storage box, and a vacuum box is installed on the lower side of the outer wall of the filter cloth. The vacuum box is connected to the water tank through the recovery pipe. A rinsing head is installed on the upper side of the outer wall of the filter cloth. The rinsing head is connected to the water tank through the fourth connecting pipe. A vacuum pump is installed in the middle of the outer wall of the storage box. The vacuum pump is connected to the vacuum box through the fifth connecting pipe. The vacuum pump is connected to the dust removal motor through the connecting shaft.

[0025] Preferably, the method of use is as follows:

[0026] S1: The operator inserts the fixed bracket into the belt conveyor and fixes the clamp to the belt conveyor through the mechanical tightening lock, so that the vibration sensor comes into contact with the belt conveyor, obtains the vibration information of the belt conveyor during operation, and transmits it to the controller. The controller controls the vibrator to perform reverse vibration to cancel it out based on the obtained belt conveyor vibration information.

[0027] S2: The controller controls the dust removal motor to drive the third telescopic shaft to adjust the height of the dust-proof plate so that the dust-proof plate contacts the belt conveyor belt. The controller controls the suction component to remove dust from the belt.

[0028] S3: The controller controls the compensation module to compensate for the ambient humidity based on the ambient humidity information transmitted by the humidity sensor.

[0029] S4: The controller controls the angle component to adjust the angle of the laser emitter and the vision sensor to detect the belt of the belt conveyor.

[0030] Preferably, S4 specifically comprises:

[0031] S41: The controller controls the laser motor to drive the slider to move within the groove;

[0032] S42: Controls the laser emitter to emit laser light onto the belt, and the vision sensor collects the laser information on the belt and transmits it to the controller;

[0033] S43: The controller controls the laser motor to drive the angle component, and adjusts the orientation of the laser emitter and vision sensor by adjusting the first telescopic shaft, the first rotating shaft and the second rotating shaft, and detects the bottom surface of the belt conveyor.

[0034] S44: After completing the bottom surface detection of the belt, the controller controls the angle component to retract, and then controls the laser motor to drive the slider to move in the chute, moving the angle component out of the bottom surface of the belt, so that the angle component is located on the front side of the belt conveyor;

[0035] S45: The controller controls the laser motor to drive the first telescopic shaft to raise the height of the laser emitter and vision sensor above the belt;

[0036] S46: The controller controls the laser motor to drive the second telescopic shaft, the first rotating shaft and the second rotating shaft to adjust the position of the laser emitter and the vision sensor, to detect the upper surface of the belt, and transmit the detection results to the controller.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] 1. This invention, by installing a laser module, achieves multi-directional free detection, solving the problems of blind spots, low detection efficiency, and poor detection accuracy. It can dynamically identify tearing on the surface of the belt, detect the belt from multiple angles, improve the detection accuracy of the device, and avoid manual secondary inspection.

[0039] 2. This invention achieves dual dust removal by installing a dust removal module, solving the problems of air dust interfering with laser irradiation and belt surface dirt affecting detection accuracy. It can remove dirt from the bottom of the belt and dust in the air, improving the accuracy of laser detection and extending the service life of the device.

[0040] 3. This invention, by installing a compensation module, realizes the function of compensating for ambient humidity, solves the problem of ambient humidity affecting detection accuracy and wasting resources, can eliminate detection errors caused by ambient humidity, can recover moisture from wet dust for water replenishment, reduce resource waste, improve the detection accuracy of the device, and extend the service life of the device;

[0041] 4. This invention, by installing a connecting module, enables the device to be quickly installed and dismantled, solving the problems of needing to modify the belt conveyor and the inability to ignore the impact of belt conveyor vibration on detection accuracy. It can quickly install and dismantle the device through mechanical locking without modifying the belt conveyor, and improves the detection accuracy of the device by vibration cancellation. Attached Figure Description

[0042] Figure 1 This is a front view structural diagram of the present invention;

[0043] Figure 2 This is a front view of the present invention.

[0044] Figure 3 This is a schematic diagram of the angle component structure of the present invention;

[0045] Figure 4 This is a schematic diagram of the dust removal module structure of the present invention;

[0046] Figure 5 This is a schematic diagram of the compensation module structure of the present invention;

[0047] Figure 6 This is a schematic diagram of the suction component structure of the present invention;

[0048] Figure 7 This is a schematic diagram of the atomizing component structure of the present invention;

[0049] Figure 8 This is a schematic diagram of the recycling component structure of the present invention.

[0050] In the diagram: 1. Fixed bracket; 2. Controller; 3. Laser emitter; 4. Vision sensor; 5. Slide rail; 6. Slider; 7. Laser motor; 8. First telescopic shaft; 9. Second telescopic shaft; 10. First rotating shaft; 11. Second rotating shaft; 12. Angle sensor; 13. Storage box; 14. First connecting pipe; 15. Dustproof plate; 16. Dust removal motor; 17. Water tank; 18. Nozzle; 19. Recovery pipe; 20. Second connecting pipe; 21. 21. Humidity sensor; 22. Clamp; 23. Locker; 24. Vibration sensor; 25. Vibrator; 26. Fan; 27. Filter screen; 28. Third telescopic shaft; 29. ​​Infrared sensor; 30. Atomizing chamber; 31. Filter chamber; 32. Piston; 33. Push rod; 34. Third connecting pipe; 35. Connecting valve; 36. Filter cloth; 37. Vacuum pump; 38. Flushing head; 39. Fourth connecting pipe; 40. Fifth connecting pipe; 41. Vacuum box. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3A laser detection device for longitudinal tear of belt conveyor includes a fixed bracket 1, a laser module and a controller 2. The controller 2 is installed on the front side of the outer wall of the fixed bracket 1, and the laser module is installed on the upper side of the outer wall of the fixed bracket 1. The laser module is connected to the controller 2 through a signal line.

[0055] The laser module includes: a laser emitter 3, a vision sensor 4, a slide 5, a slider 6, a laser motor 7, and an angle assembly;

[0056] A sliding groove 5 is installed on the upper side of the outer wall of the fixed bracket 1. A slider 6 is installed in the middle of the inner wall of the sliding groove 5. An angle component is installed on the upper side of the outer wall of the slider 6. The slider 6 and the angle component are connected to the laser motor 7 through a connecting shaft. A laser emitter 3 is installed on the upper side of the outer wall of the angle component. A vision sensor 4 is installed on the left side of the outer wall of the laser emitter 3. The laser motor 7 is installed on the lower side of the outer wall of the fixed bracket 1. The laser emitter 3, the vision sensor 4 and the laser motor 7 are connected to the controller 2 through a signal line.

[0057] The angle assembly includes: a first telescopic shaft 8, a second telescopic shaft 9, a first rotating shaft 10, a second rotating shaft 11, and an angle sensor 12;

[0058] A first telescopic shaft 8 is installed on the upper side of the outer wall of the slider 6. A first rotating shaft 10 is installed on the upper side of the outer wall of the first telescopic shaft 8. A second telescopic shaft 9 is installed on the upper side of the outer wall of the rotating shaft 10. A second rotating shaft 11 is installed on the front side of the outer wall of the second telescopic shaft 9. The first telescopic shaft 8, the second telescopic shaft 9, the first rotating shaft 10, and the second rotating shaft 11 are connected to the laser motor 7 through a connecting shaft. An angle sensor 12 is installed at the connection between the first rotating shaft 10, the second rotating shaft 11, and the second telescopic shaft 9. The angle sensor 12 is connected to the controller 2 through a signal line.

[0059] Furthermore, during the operation of the belt conveyor, the controller 2 controls the adapter at the output end of the laser motor 7 to connect to the slider 6. Driven by the laser motor 7, the slider 6 moves within the chute 5, causing the angle component above the slider 6 to move below the belt of the belt conveyor. The direction of movement is perpendicular to the direction of belt movement. When the angle component moves below the belt, the controller 2 controls the laser motor 7 to disconnect from the slider 6, causing the slider 6 to stop moving. Subsequently, the controller 2 controls the laser emitter 3 to emit laser light onto the belt. The vision sensor 4 collects the image information of the laser illuminating the belt and transmits it to the control unit. Device 2 and controller 2 determine whether the belt has a longitudinal tear based on the laser image information on the belt. When a longitudinal tear is found, controller 2 issues an alarm to the operator and stops the belt conveyor. During belt maintenance, to ensure the integrity of the belt inspection, controller 2, in conjunction with laser emitter 3 and vision sensor 4, inspects the bottom surface of the belt when slider 6 moves directly under the belt. Simultaneously, controller 2 controls the adapter at the output end of laser motor 7 to connect to slider 6 and the second rotating shaft 11. Controller 2 then controls laser motor 7 to drive slider 6 within chute 5. While performing reciprocating motion, the second rotating shaft 11 rotates. The rotation angle of the second rotating shaft 11 is collected by the angle sensor 12 and transmitted to the controller 2, enabling the laser emitter 3 to emit lasers onto the belt at different angles and positions below the belt. The vision sensor 4 collects laser information from the bottom surface of the belt at different angles and positions, thus ensuring that there are no blind spots in the detection of the bottom surface of the belt. After completing the detection of the bottom surface of the belt, the controller 2 controls the adapter at the output end of the laser motor 7 to connect with the first telescopic shaft 8 and the second telescopic shaft 9 to retract the angle assembly. Subsequently, the controller controls the adapter at the output end of the laser motor 7 to connect only with the slider. The connection 6 drives the angle component to move to the front of the belt conveyor. The controller 2 controls the adapter at the output end of the laser motor 7 to connect sequentially to the first telescopic shaft 8, the first rotating shaft 10, the second telescopic shaft 9, and the second rotating shaft 11. This adjusts the orientation of the laser emitter 3 and the vision sensor 4, enabling the laser emitter 3 to emit laser light towards the front of the belt. The laser information is collected by the vision sensor 4 and transmitted to the controller 2 for analysis. This allows the laser detection to cover the front and bottom surfaces of the belt conveyor without blind spots, improving the detection accuracy of the belt conveyor and avoiding detection errors caused by blind spots.

[0060] Example 2: Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 8 A laser detection device for longitudinal tear of belt conveyor, wherein a dust removal module is installed on the left side of the outer wall of the angle component, and the dust removal module includes: storage box 13, suction component, first connecting pipe 14, dust isolation plate 15 and dust removal motor 16;

[0061] A storage box 13 is installed on the left side of the outer wall of the chute 5. A dustproof plate 15 is installed on the upper side of the outer wall of the storage box 13. A suction component is installed on the lower side of the outer wall of the dustproof plate 15. The suction component is connected to the storage box 13 through a first connecting pipe 14. A dust removal motor 16 is installed on the rear side of the outer wall of the laser motor 7. The suction component is connected to the dust removal motor 16 through a connecting shaft. The dust removal motor 16 is connected to the controller 2 through a signal line.

[0062] The suction assembly includes: a fan 26, a filter 27, a third telescopic shaft 28, and an infrared sensor 29;

[0063] A filter screen 27 is installed on the lower side of the outer wall of the dustproof plate 15. A third telescopic shaft 28 is installed on the lower side of the outer wall of the dustproof plate 15. A fan 26 is installed on the left side of the outer wall of the filter screen 27. The fan 26 and the third telescopic shaft 28 are connected to the dust removal motor 16 through a connecting shaft. An infrared sensor 29 is installed on the upper side of the outer wall of the dustproof plate 15. The infrared sensor 29 is connected to the controller 2 through a signal line.

[0064] The recycling assembly includes: filter cloth 36, vacuum pump 37, rinsing head 38, fourth connecting pipe 39, fifth connecting pipe 40, and vacuum box 41;

[0065] A filter cloth 36 is installed in the middle of the inner wall of the storage box 13. A vacuum box 41 is installed on the lower side of the outer wall of the filter cloth 36. The vacuum box 41 is connected to the water tank 17 through the recovery pipe 19. A rinsing head 38 is installed on the upper side of the outer wall of the filter cloth 36. The rinsing head 38 is connected to the water tank 17 through the fourth connecting pipe 39. A vacuum pump 37 is installed in the middle of the outer wall of the storage box 13. The vacuum pump 37 is connected to the vacuum box 41 through the fifth connecting pipe 40. The vacuum pump 37 is connected to the dust removal motor 16 through the connecting shaft.

[0066] Furthermore, before inspecting the bottom surface of the belt, the controller 2 connects the adapter at the output end of the dust removal motor 16 to the third telescopic shaft 28. The dust removal motor 16 drives the third telescopic shaft 28 to raise the height of the dust-proof plate 15. Infrared light is emitted to the bottom surface of the belt via the infrared sensor 29 above the dust-proof plate 15 to detect the distance between the upper surface of the dust-proof plate 15 and the bottom surface of the belt, ensuring a seamless fit between the dust-proof plate 15 and the bottom surface of the belt. After the dust-proof plate 15 is in contact with the bottom surface of the belt, the connection between the dust removal motor 16 and the third telescopic shaft 28 is disconnected. The adapter at the output end of the dust removal motor 16 is then connected to the fan 26. The dust removal motor 16 drives the fan 26 to rotate, generating suction. During the operation of the belt conveyor, as the belt passes over the dust-proof plate 15, the dust-proof plate 15 scrapes away the dirt on the bottom surface of the belt. The dirt then falls through the filter screen 27 into the storage box 13 via the suction generated by the fan 26. Finally, the suction generated by the rotating fan 26 attaches the laser module... The incoming air passes through the filter screen 27 and enters the storage box 13 through the first connecting pipe 14. This removes the dirt accumulated on the bottom of the belt conveyor during operation, preventing the dirt from interfering with the laser. It also removes dust in the air near the laser module, reducing dust interference with the laser and improving the accuracy of laser detection. After the moist dust enters the storage box 13, it is connected to the vacuum pump 37 through the adapter at the output end of the dust removal motor 16. Driven by the vacuum pump 37, the suction is transmitted to the vacuum box 41 through the fifth connecting pipe 40. The moisture in the moist dust entering the filter cloth 36 is removed and flows into the vacuum box 41. Then, it flows into the water tank 17 through the recovery pipe 19 for moisture replenishment. After the moist dust treatment is completed, the rinsing head 38 and the water tank 17 are connected periodically through the fourth connecting pipe 39. The rinsing head 38 is used to rinse the filter cloth 36. In addition, the suction component can draw in moist air to reduce the air humidity.

[0067] Example 3: Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 7 A laser detection device for longitudinal tear of belt of a belt conveyor, wherein a compensation module is installed on the upper side of the outer wall of the second telescopic shaft 9, and the compensation module includes: water tank 17, nozzle 18, atomizing component, recovery pipe 19, recovery component, second connecting pipe 20 and humidity sensor 21;

[0068] A water tank 17 is installed on the rear side of the outer wall of the storage box 13. A recycling component is installed in the middle of the inner wall of the storage box 13. The water tank 17 is connected to the recycling component through a recycling pipe 19. A nozzle 18 is installed on the upper side of the outer wall of the second telescopic shaft 9. An atomizing component is installed on the upper side of the outer wall of the water tank 17. The atomizing component is connected to the nozzle 18 through a second connecting pipe 20. The atomizing component is connected to the dust removal motor 16 through a connecting shaft. A humidity sensor 21 is installed on the front side of the outer wall of the nozzle 18. The humidity sensor 21 is connected to the controller 2 through a signal line.

[0069] The atomizing assembly includes: an atomizing chamber 30, a filter chamber 31, a piston 32, a push rod 33, a third connecting pipe 34, and a connecting valve 35;

[0070] An atomizing chamber 30 is installed on the upper side of the outer wall of the water tank 17. The atomizing chamber 30 is connected to the water tank 17 through a connecting valve 35. The connecting valve 35 is connected to the controller 2 through a signal line. A filter chamber 31 is installed on the rear side of the outer wall of the atomizing chamber 30. The atomizing chamber 30 is connected to the filter chamber 31 through a third connecting pipe 34. A piston 32 is installed in the middle of the inner wall of the atomizing chamber 30. A push rod 33 is installed on the front side of the outer wall of the piston 32. The push rod 33 is connected to the dust removal motor 16 through a connecting shaft.

[0071] Furthermore, during the laser module's detection of the belt, the humidity sensor 21 located on the upper side of the second telescopic shaft 9 collects ambient humidity information near the laser module and transmits the information to the controller 2. The controller 2 compares the collected ambient humidity information with a preset humidity range of 20% to 90%. When the ambient humidity is below 20%, the controller 2 controls the connecting valve 35 to connect the water tank 17 and the atomizing chamber 30, and controls the adapter at the output end of the dust removal motor 16 to connect with the push rod 33. Driven by the dust removal motor 16, the push rod 33 drives the piston 32 to reciprocate, discharging water from the water tank 17. The air is drawn into the atomization chamber 30, filtered through the filter chamber 31, and then enters the atomization chamber 30 through the third connecting pipe 34. The air and water are compressed and sent to the nozzle 18 through the second connecting pipe 20. The nozzle 18 sprays out the atomized water to compensate for the ambient humidity. When the ambient humidity is greater than 90%, the controller 2 controls the dust removal module to absorb the ambient air near the laser component to reduce the air humidity and keep the working environment humidity of the laser module within the set range. This avoids low detection accuracy due to humidity deviation and can also improve the service life of the detection device.

[0072] Example 4: Please refer to Figure 1 and Figure 2 A laser detection device for longitudinal tear of belt conveyor, wherein the fixed bracket 1 has connecting modules installed on the front and rear sides of its outer wall, and the connecting modules include: clamping block 22, locking device 23, vibration sensor 24 and vibrator 25;

[0073] Clamping blocks 22 are installed on the front and rear sides of the outer wall of the fixed bracket 1. A locking device 23 is installed on the upper side of the outer wall of the clamping block 22. A vibration sensor 24 is installed on the left side of the outer wall of the clamping block 22. A vibrator 25 is installed at the joint between the inner wall of the fixed bracket 1 and the slide groove 5. The vibration sensor 24 and the vibrator 25 are connected to the controller 2 through a signal line.

[0074] Furthermore, the operator inserts the fixing bracket 1 into the belt conveyor and fixes the clamp 22 to the belt conveyor using the mechanical tightening lock 23, so that the vibration sensor 24 comes into contact with the belt conveyor. During the operation of the belt conveyor, the vibration information of the belt conveyor is acquired and transmitted to the controller 2. The controller 2 controls the vibrator 25 to vibrate in the opposite direction according to the acquired vibration information of the belt conveyor, so as to cancel the vibration generated during the operation of the belt conveyor and avoid the laser offset, image blurring and dirt shaking on the belt surface caused by vibration being misidentified as cracks. While improving the detection accuracy, the clamp 22 is fixed by manually operating the locking device 23 to mechanically tighten it. The operation is simple, no additional modification to the belt conveyor is required, and the installation and removal are convenient, which improves the flexibility of the detection device.

[0075] Example 5: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 A laser detection device for longitudinal tear of belt of a belt conveyor, wherein the angle component includes: a first telescopic shaft 8, a second telescopic shaft 9, a first rotating shaft 10, a second rotating shaft 11 and an angle sensor 12;

[0076] A first telescopic shaft 8 is installed on the upper side of the outer wall of the slider 6. A first rotating shaft 10 is installed on the upper side of the outer wall of the first telescopic shaft 8. A second telescopic shaft 9 is installed on the upper side of the outer wall of the rotating shaft 10. A second rotating shaft 11 is installed on the front side of the outer wall of the second telescopic shaft 9. The first telescopic shaft 8, the second telescopic shaft 9, the first rotating shaft 10, and the second rotating shaft 11 are connected to the laser motor 7 through a connecting shaft. An angle sensor 12 is installed at the connection between the first rotating shaft 10, the second rotating shaft 11, and the second telescopic shaft 9. The angle sensor 12 is connected to the controller 2 through a signal line.

[0077] A compensation module is installed on the upper side of the outer wall of the second telescopic shaft 9. The compensation module includes: a water tank 17, a nozzle 18, an atomizing component, a recovery pipe 19, a recovery component, a second connecting pipe 20, and a humidity sensor 21.

[0078] A water tank 17 is installed on the rear side of the outer wall of the storage box 13. A recycling component is installed in the middle of the inner wall of the storage box 13. The water tank 17 is connected to the recycling component through a recycling pipe 19. A nozzle 18 is installed on the upper side of the outer wall of the second telescopic shaft 9. An atomizing component is installed on the upper side of the outer wall of the water tank 17. The atomizing component is connected to the nozzle 18 through a second connecting pipe 20. The atomizing component is connected to the dust removal motor 16 through a connecting shaft. A humidity sensor 21 is installed on the front side of the outer wall of the nozzle 18. The humidity sensor 21 is connected to the controller 2 through a signal line.

[0079] Furthermore, after the belt conveyor completes its work, the controller 2 can control the adapter of the output end of the laser motor 7 to connect to the slider 6, driving the angle component to move to the front of the belt conveyor. Then, by controlling the adapter of the output end of the laser motor 7 to connect the first telescopic shaft 8, the first rotating shaft 10, the second telescopic shaft 9, and the second rotating shaft 11 in sequence, the position of the nozzle 18 located above the second telescopic shaft 9 is adjusted so that the water jet sprayed by the nozzle 18 can contact the upper surface of the belt. Subsequently, the controller 2 controls the atomizing component to pressurize and atomize the water jet in the water tank 17. The nozzle 18 sprays the pressurized and atomized water jet to clean the upper surface of the belt, removing residual dirt, thereby improving the conveying effect of the belt and extending the service life of the belt. During the operation of the belt conveyor, by adjusting the angle component, the angle of the nozzle 18 can be adjusted so that the nozzle 18 can wash the objects conveyed on the belt, which can reduce the difficulty of subsequent material processing and improve the conveying effect of the belt conveyor.

[0080] Working principle: The operator inserts the fixed bracket 1 into the belt conveyor and fixes the clamp 22 to the belt conveyor through the mechanical tightening lock 23, so that the vibration sensor 24 comes into contact with the belt conveyor. During the operation of the belt conveyor, the vibration information of the belt conveyor is acquired and transmitted to the controller 2. The controller 2 controls the vibrator 25 to vibrate in the opposite direction according to the acquired vibration information of the belt conveyor, so as to cancel the vibration generated when the belt conveyor is working.

[0081] Before inspecting the bottom surface of the belt, controller 2 connects the adapter at the output end of dust removal motor 16 to the third telescopic shaft 28. Dust removal motor 16 drives the third telescopic shaft 28 to raise the height of dust removal plate 15. Infrared sensor 29 above dust removal plate 15 emits infrared light to detect the distance between the upper surface of dust removal plate 15 and the bottom surface of the belt, ensuring seamless contact between dust removal plate 15 and the bottom surface of the belt. After dust removal plate 15 is in contact with the bottom surface of the belt, the connection between dust removal motor 16 and third telescopic shaft 28 is disconnected, and the adapter at the output end of dust removal motor 16 is connected to fan 26. Dust removal motor 16 drives fan 26 to rotate and generate suction. During the operation of the belt conveyor, when the belt passes over dust removal plate 15, dust removal plate 15 scrapes away dirt on the bottom surface of the belt. The dirt then falls through the filter screen 27 and into storage box 13 through the suction generated by fan 26. The suction generated by fan 26 also removes dirt from the vicinity of laser module. Air is drawn in, passes through filter 27, and enters storage box 13 via first connecting pipe 14. This removes dirt accumulated on the bottom of the belt conveyor during operation, preventing interference with the laser. It also removes dust from the air near the laser module, reducing dust interference and improving laser detection accuracy. After the wet dust enters storage box 13, it is connected to vacuum pump 37 via adapter at the output of dust removal motor 16. Driven by vacuum pump 37, suction is transmitted to vacuum box 41 via fifth connecting pipe 40. This removes moisture from the wet dust entering filter cloth 36, which flows into vacuum box 41. The moisture then flows into water tank 17 via recovery pipe 19 for replenishment. After the wet dust treatment is completed, a rinsing head 38 is connected to water tank 17 via fourth connecting pipe 39. The rinsing head 38 rinses the filter cloth 36. Additionally, the suction component can draw in humid air to reduce air humidity.

[0082] During the laser module's belt inspection, the humidity sensor 21 located on the upper side of the second telescopic shaft 9 collects ambient humidity information near the laser module and transmits the information to the controller 2. The controller 2 compares the collected ambient humidity information with a preset humidity range of 20% to 90%. When the ambient humidity is below 20%, the controller 2 controls the connecting valve 35 to connect the water tank 17 and the atomizing chamber 30, and controls the adapter at the output end of the dust removal motor 16 to connect with the push rod 33. Driven by the dust removal motor 16, the push rod 33 drives the piston 32 to move... The reciprocating motion draws water from the water tank 17 into the atomizing chamber 30, and draws air through the filter chamber 31 and then through the third connecting pipe 34 into the atomizing chamber 30. The air and water are compressed and sent to the nozzle 18 through the second connecting pipe 20. The nozzle 18 sprays out the atomized water. To compensate for the ambient humidity, when the ambient humidity is greater than 90%, the controller 2 controls the dust removal module to draw in the ambient air near the laser component to reduce the air humidity and keep the working environment humidity of the laser module within the set range.

[0083] During the operation of the belt conveyor, the controller 2 controls the adapter at the output end of the laser motor 7 to connect to the slider 6. Driven by the laser motor 7, the slider 6 moves within the chute 5, causing the angle component above the slider 6 to move below the belt of the belt conveyor. The direction of movement is perpendicular to the direction of belt movement. When the angle component moves below the belt, the controller 2 controls the laser motor 7 to disconnect from the slider 6, causing the slider 6 to stop moving. Subsequently, the controller 2 controls the laser emitter 3 to emit a laser beam onto the belt. The vision sensor 4 collects the image information of the laser beam on the belt and transmits it to the controller 2. The controller 2 judges whether there is a longitudinal tear on the belt based on the laser image information. If a longitudinal tear occurs, the controller 2 issues an alarm to the operator and controls the belt conveyor to stop running. During the belt maintenance process of the belt conveyor, to ensure the integrity of the belt inspection, the controller 2 controls the adapter at the output end of the laser motor 7 to connect to the slider 6 and the second rotating shaft 11 simultaneously when the slider 6 moves directly below the belt and the laser emitter 3 and vision sensor 4 are used to inspect the bottom surface of the belt. The controller 2 controls the laser motor 7 to move below the belt and the adapter at the output end of the laser motor 7 to connect to the slider 6 and the second rotating shaft 11. The controller 2 controls the laser motor 7 to move below the belt and the laser emitter 3 to connect to the second rotating shaft 11. The photoelectric motor 7 drives the slider 6 to reciprocate within the slide groove 5, simultaneously rotating the second rotating shaft 11. Angle sensor 12 collects the rotation angle of the second rotating shaft 11 and transmits it to controller 2, enabling the laser emitter 3 to emit laser light onto the belt at different angles and positions below it. Vision sensor 4 collects laser information from the bottom surface of the belt at different angles and positions, ensuring no blind spots in the detection of the belt's bottom surface. After completing the belt bottom surface detection, controller 2 connects the adapter at the output end of the laser motor 7 to the first telescopic shaft 8 and the second telescopic shaft 9 to retract the angle assembly. The laser motor 7 is then controlled to connect its output interface only to the slider 6, moving the angle component to the front of the belt conveyor. The controller 2 controls the output interface of the laser motor 7 to connect sequentially to the first telescopic shaft 8, the first rotating shaft 10, the second telescopic shaft 9, and the second rotating shaft 11, adjusting the orientation of the laser emitter 3 and the vision sensor 4 so that the laser emitter 3 can emit laser light towards the front of the belt, and the laser information is collected by the vision sensor 4 and transmitted to the controller 2 for analysis, so that the laser detection can cover the front and bottom surfaces of the belt conveyor belt without blind spots.

[0084] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A laser detection device for longitudinal tear of a belt conveyor, comprising a fixed bracket (1), a laser module and a controller (2), characterized in that: A controller (2) is installed on the front side of the outer wall of the fixed bracket (1), and a laser module is installed on the upper side of the outer wall of the fixed bracket (1). The laser module is connected to the controller (2) through a signal line. The laser module includes: a laser emitter (3), a vision sensor (4), a slide (5), a slider (6), a laser motor (7), and an angle assembly; A sliding groove (5) is installed on the upper side of the outer wall of the fixed bracket (1). A slider (6) is installed in the middle of the inner wall of the sliding groove (5). An angle component is installed on the upper side of the outer wall of the slider (6). The slider (6) and the angle component are connected to the laser motor (7) through a connecting shaft. A laser emitter (3) is installed on the upper side of the outer wall of the angle component. A vision sensor (4) is installed on the left side of the outer wall of the laser emitter (3). A laser motor (7) is installed on the lower side of the outer wall of the fixed bracket (1). The laser emitter (3), the vision sensor (4) and the laser motor (7) are connected to the controller (2) through a signal line. The angle assembly includes: a first telescopic shaft (8), a second telescopic shaft (9), a first rotating shaft (10), a second rotating shaft (11), and an angle sensor (12). A first telescopic shaft (8) is installed on the upper side of the outer wall of the slider (6). A first rotating shaft (10) is installed on the upper side of the outer wall of the first telescopic shaft (8). A second telescopic shaft (9) is installed on the upper side of the outer wall of the rotating shaft (10). A second rotating shaft (11) is installed on the front side of the outer wall of the second telescopic shaft (9). The first telescopic shaft (8), the second telescopic shaft (9), the first rotating shaft (10), and the second rotating shaft (11) are connected to the laser motor (7) through a connecting shaft. An angle sensor (12) is installed at the connection between the first rotating shaft (10), the second rotating shaft (11), and the second telescopic shaft (9). The angle sensor (12) is connected to the controller (2) through a signal line. A dust removal module is installed on the left side of the outer wall of the angle component. The dust removal module includes: a storage box (13), a suction component, a first connecting pipe (14), a dust separation plate (15), and a dust removal motor (16). A storage box (13) is installed on the left side of the outer wall of the chute (5). A dustproof plate (15) is installed on the upper side of the outer wall of the storage box (13). A suction component is installed on the lower side of the outer wall of the dustproof plate (15). The suction component is connected to the storage box (13) through the first connecting pipe (14). A dust removal motor (16) is installed on the rear side of the outer wall of the laser motor (7). The suction component is connected to the dust removal motor (16) through the connecting shaft. The dust removal motor (16) is connected to the controller (2) through the signal line. The fixed bracket (1) has connecting modules installed on the front and rear sides of its outer wall. The connecting modules include: clamp (22), lock (23), vibration sensor (24) and vibrator (25). The fixed bracket (1) has clamps (22) installed on the front and rear sides of its outer wall. A lock (23) is installed on the upper side of the outer wall of the clamps (22). A vibration sensor (24) is installed on the left side of the outer wall of the clamps (22). A vibrator (25) is installed at the joint between the inner wall of the fixed bracket (1) and the slide (5). The vibration sensor (24) and the vibrator (25) are connected to the controller (2) via signal lines.

2. The laser detection device for longitudinal tear of a belt conveyor according to claim 1, characterized in that: A compensation module is installed on the upper side of the outer wall of the second telescopic shaft (9). The compensation module includes: a water tank (17), a nozzle (18), an atomizing component, a recovery pipe (19), a recovery component, a second connecting pipe (20), and a humidity sensor (21). A water tank (17) is installed on the rear side of the outer wall of the storage box (13). A recycling component is installed in the middle of the inner wall of the storage box (13). The water tank (17) is connected to the recycling component through a recycling pipe (19). A nozzle (18) is installed on the upper side of the outer wall of the second telescopic shaft (9). An atomizing component is installed on the upper side of the outer wall of the water tank (17). The atomizing component is connected to the nozzle (18) through a second connecting pipe (20). The atomizing component is connected to the dust removal motor (16) through a connecting shaft. A humidity sensor (21) is installed on the front side of the outer wall of the nozzle (18). The humidity sensor (21) is connected to the controller (2) through a signal line.

3. The laser detection device for longitudinal tear of a belt conveyor according to claim 1, characterized in that: The suction assembly includes: a fan (26), a filter (27), a third telescopic shaft (28), and an infrared sensor (29). A filter screen (27) is installed on the lower side of the outer wall of the dustproof plate (15). A third telescopic shaft (28) is installed on the lower side of the outer wall of the dustproof plate (15). A fan (26) is installed on the left side of the outer wall of the filter screen (27). The fan (26) and the third telescopic shaft (28) are connected to the dust removal motor (16) through a connecting shaft. An infrared sensor (29) is installed on the upper side of the outer wall of the dustproof plate (15). The infrared sensor (29) is connected to the controller (2) through a signal line.

4. The laser detection device for longitudinal tear of a belt conveyor according to claim 2, characterized in that: The atomizing assembly includes: an atomizing chamber (30), a filter chamber (31), a piston (32), a push rod (33), a third connecting pipe (34), and a connecting valve (35); An atomizing chamber (30) is installed on the upper side of the outer wall of the water tank (17). The atomizing chamber (30) is connected to the water tank (17) through a connecting valve (35). The connecting valve (35) is connected to the controller (2) through a signal line. A filter chamber (31) is installed on the rear side of the outer wall of the atomizing chamber (30). The atomizing chamber (30) is connected to the filter chamber (31) through a third connecting pipe (34). A piston (32) is installed in the middle of the inner wall of the atomizing chamber (30). A push rod (33) is installed on the front side of the outer wall of the piston (32). The push rod (33) is connected to the dust removal motor (16) through a connecting shaft.

5. The laser detection device for longitudinal tear of a belt conveyor according to claim 2, characterized in that: The recycling assembly includes: filter cloth (36), vacuum pump (37), rinsing head (38), fourth connecting pipe (39), fifth connecting pipe (40) and vacuum box (41); A filter cloth (36) is installed in the middle of the inner wall of the storage box (13). A vacuum box (41) is installed on the lower side of the outer wall of the filter cloth (36). The vacuum box (41) is connected to the water tank (17) through the recovery pipe (19). A rinsing head (38) is installed on the upper side of the outer wall of the filter cloth (36). The rinsing head (38) is connected to the water tank (17) through the fourth connecting pipe (39). A vacuum pump (37) is installed in the middle of the outer wall of the storage box (13). The vacuum pump (37) is connected to the vacuum box (41) through the fifth connecting pipe (40). The vacuum pump (37) is connected to the dust removal motor (16) through the connecting shaft.

6. A method of using a laser detection device for longitudinal tear of a belt conveyor, applicable to the laser detection device for longitudinal tear of a belt conveyor as described in any one of claims 1-5, characterized in that: The method of use is as follows: S1: The operator inserts the fixed bracket (1) into the belt conveyor and fixes the clamp (22) to the belt conveyor through the mechanical tightening lock (23), so that the vibration sensor (24) contacts the belt conveyor, obtains the vibration information of the belt conveyor during operation, and transmits it to the controller (2). The controller (2) controls the vibrator (25) to perform reverse vibration cancellation based on the obtained belt conveyor vibration information. S2: The controller (2) controls the dust removal motor (16) to drive the third telescopic shaft (28) to adjust the height of the dust isolation plate (15) so that the dust isolation plate (15) contacts the belt conveyor belt. The controller (2) controls the suction component to remove dust from the belt. S3: The controller (2) controls the compensation module to compensate for the ambient humidity based on the ambient humidity information transmitted by the humidity sensor (21); S4: The controller (2) controls the angle assembly to adjust the angle of the laser emitter (3) and the vision sensor (4) to detect the belt of the belt conveyor.

7. The method of using the laser detection device for longitudinal tear of a belt conveyor according to claim 6, characterized in that: Specifically, S4 is: S41: The controller (2) controls the laser motor (7) to drive the slider (6) to move within the groove (5); S42: Control the laser emitter (3) to emit laser to the belt, and the vision sensor (4) collects the laser information on the belt and transmits it to the controller (2). S43: The controller (2) controls the laser motor (7) to drive the angle component, and adjusts the orientation of the laser emitter (3) and the vision sensor (4) by adjusting the first telescopic shaft (8), the first rotating shaft (10) and the second rotating shaft (11) to detect the bottom surface of the belt conveyor. S44: After completing the bottom surface detection of the belt, the controller (2) controls the angle component to retract, and then controls the laser motor (7) to drive the slider (6) to move in the groove (5), moving the angle component out of the bottom surface of the belt, so that the angle component is located on the front side of the belt conveyor; S45: The controller (2) controls the laser motor (7) to drive the first telescopic shaft (8) to raise the height of the laser emitter (3) and the vision sensor (4) above the belt; S46: The controller (2) controls the laser motor (7) to drive the second telescopic shaft (9), the first rotating shaft (10) and the second rotating shaft (11) to adjust the position of the laser emitter (3) and the vision sensor (4), detect the upper surface of the belt, and transmit the detection results to the controller (2).

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