Self-adaptive conveying belt longitudinal tearing three-dimensional scanning recognition system

Abstract

The invention relates to a self-adaptive conveying belt longitudinal tearing three-dimensional scanning recognition system, and relates to the technical field of conveying belt damage detection.The self-adaptive conveying belt longitudinal tearing three-dimensional scanning recognition system comprises a supporting plate, a detection assembly, an adjusting assembly, a longitudinal tearing recognition body and a compensation assembly; the adjusting assembly comprises an adjusting box, a connecting column, a permanent magnet plate, an electromagnet and a current adjusting part, the compensation assembly comprises a first compensation block, a second compensation block and a compensation power part, and the electromagnet can quickly adjust the position of the connecting column under the constant force abutting detection of the detection rod on the conveying belt; and under the compensation action of the first compensation block, the second compensation block and the compensation power part, the longitudinal tearing identification main body can keep the optimal shooting distance on the basis of not enlarging the shooting gap. According to the invention, the shooting distance of the high-speed three-dimensional camera can be met without enlarging the shooting gap of the protective shell.

Description

Technical Field

[0001] This application relates to the technical field of conveyor belt damage detection, and in particular to an adaptive three-dimensional scanning and recognition system for longitudinal tearing of conveyor belts. Background Technology

[0002] Conveyor belts are an important material transport tool that plays a vital role in production and transportation. Whether the conveyor belt can operate safely directly determines the safety and stability of the production line. In order to detect damage to the conveyor belt in a timely manner, longitudinal tear monitoring devices are usually installed on the frame.

[0003] Existing longitudinal tear monitoring devices are fixedly installed below the conveyor belt's carrying surface. These devices use a high-speed 3D camera to collect real-time data from the conveyor belt's surface and generate images. These images allow for a direct visual indication of whether the conveyor belt has been damaged.

[0004] To shield against dust or foreign objects, longitudinal tear monitoring devices are usually covered with a protective shell. The protective shell has a notch for high-speed 3D cameras to take pictures. Since the amount of material falling on the conveyor belt is random, the amount of compression deformation of the conveyor belt is also random. At the same time, high-speed 3D cameras have requirements for shooting distance. In order to meet the shooting distance requirements of high-speed 3D cameras, it is necessary to increase the width of the notch on the protective shell to expand the shooting range of high-speed 3D cameras, so that high-speed 3D cameras can collect image data at the required shooting distance within the shooting range.

[0005] In the above solutions, although increasing the shooting gap of the protective shell can expand the shooting range of the high-speed 3D camera, the increase in the shooting gap will also make it easier for dust or foreign objects to enter the protective shell. Especially in the harsh environment of underground coal mines, the protective effect of the protective shell will be severely reduced. Therefore, there is an urgent need for a longitudinal tear monitoring device that can meet the shooting distance of the high-speed 3D camera without increasing the shooting gap of the protective shell. Summary of the Invention

[0006] In order to meet the shooting distance requirements of high-speed 3D cameras without increasing the shooting gap of the protective shell, this application provides an adaptive conveyor belt longitudinal tear 3D scanning and recognition system.

[0007] This application provides an adaptive 3D scanning and recognition system for longitudinal tearing of conveyor belts, which adopts the following technical solution: An adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system includes a support plate, a detection component, an adjustment component, a longitudinal tear recognition body, and a compensation component. The support plate is connected to the frame of the conveyor belt and is located directly below the material receiving area of ​​the conveyor belt. The detection assembly includes a detection sleeve, a detection rod, and a constant force drive unit: The detection sleeve is connected to the support plate, the detection rod slides through the detection sleeve, and the constant force drive part is connected to the detection sleeve and the detection rod respectively. The constant force drive part is used to drive the detection rod to slide out of the detection sleeve and abut against the conveyor belt with a constant driving force. The adjustment assembly includes an adjustment box, a connecting column, a permanent magnet plate, an electromagnet, and a current adjustment unit; The adjustment box is connected to the support plate, the connecting column slides through the top of the adjustment box, the permanent magnet plate is connected to the end of the connecting column located inside the adjustment box, the electromagnet is connected to the bottom of the adjustment box, the electromagnet and the permanent magnet plate are set opposite each other, and the polarity of the energized electromagnet and the permanent magnet plate is the same on the side closest to each other. The current regulating unit is connected to the detection rod and electrically connected to the electromagnet. The current regulating unit controls the current in the electromagnet based on the sliding stroke of the detection rod relative to the detection sleeve, so as to control the detection rod and the connecting column to slide synchronously and in the same direction with the same displacement. The longitudinal tear recognition body is set on the connecting column. The longitudinal tear recognition body is used to scan and identify defects on the surface of the conveyor belt, and the shooting position is located at the center of the material receiving area of ​​the conveyor belt. The compensation component is connected between the longitudinal tear recognition body and the connecting column. The compensation component is used to compensate for the adjustment displacement difference of the longitudinal tear recognition body. The adjustment displacement difference is the vertical displacement difference between the shooting position of the longitudinal tear recognition body on the conveyor belt and the contact position of the detection rod on the conveyor belt. The sliding displacement of the detection rod plus the adjustment displacement difference equals the moving displacement of the longitudinal tear recognition body.

[0008] Optionally, the detection sleeve is rotatably connected to the support plate. The constant force drive unit includes a slider, a guide rod, a first magnetic wheel, and a second magnetic wheel. The slider is connected to the detection rod and is slidably disposed in a spiral groove opened on the inner wall of the detection sleeve. The guide rod is a polygonal rod and is connected to the support plate. The guide rod is slidably disposed in a guide groove opened on the detection rod along its sliding direction. The first magnetic wheel is connected to the detection sleeve, and the second magnetic wheel is located on one side of the first magnetic wheel. The second magnetic wheel is connected to a motor, which is mounted on the support plate. The second magnetic wheel is used to magnetically drive the first magnetic wheel to rotate.

[0009] Optionally, the current regulating unit includes an regulating contact, a resistance slide rail, and a power supply. The regulating contact is embedded in the detection rod, the resistance slide rail is embedded in the guide rod, the regulating contact abuts against the resistance slide rail, and the regulating contact is electrically connected to the power supply. The electromagnet is provided with two terminals for energizing. The top of the resistance slide rail is electrically connected to one of the terminals on the electromagnet, and the other terminal on the electromagnet is electrically connected to the power supply. The power supply, regulating contact, resistance slide rail, and electromagnet form a complete current loop.

[0010] Optionally, the compensation component includes a first compensation block, a second compensation block, and a compensation power unit. Two first compensation blocks are symmetrically arranged and slidably connected to the longitudinal tear recognition body. Each of the two first compensation blocks has a first compensation slope at one end that is close to the other. The second compensation block is connected to the connecting post and is located between the two first compensation blocks. The second compensation block has two second compensation slopes that are adapted to the first compensation slopes. The second compensation slopes are fitted and abutted against the first compensation slopes in a one-to-one correspondence. The compensation power unit is used to drive the two first compensation blocks to slide away from each other when the connecting post slides down, and to drive the two first compensation blocks to slide closer to each other when the connecting post slides up.

[0011] Optionally, the compensation power unit includes a telescopic rod, a sliding block, and a compensation connecting rod. Two telescopic rods, two sliding blocks, and two compensation connecting rods are symmetrically arranged. The telescopic rod corresponds one-to-one with the first compensation block. The movable end of the telescopic rod is connected to the first compensation block. The sliding block is connected to the telescopic rod in a corresponding manner and is slidably connected to the adjustment box. One end of the compensation connecting rod is hinged to the sliding block in a corresponding manner, and the other end is hinged to the connecting column. The compensation connecting rod is inclined. When the connecting column slides down, the included angle between the two compensation connecting rods increases, thereby driving the two sliding blocks to slide in a direction away from each other.

[0012] Optionally, the adjustment box is provided with a limiting assembly, which includes a limiting block. The limiting block is connected to the adjustment box and located between the electromagnet and the permanent magnet plate. The limiting block is located on the downward trajectory of the connecting column, and a flexible pad is provided on the side of the limiting block near the permanent magnet plate.

[0013] Optionally, the limiting assembly further includes a limiting electric cylinder connected to the adjusting box, and a limiting block connected to the movable end of the limiting electric cylinder. The limiting electric cylinder is used to drive the limiting block to move along the sliding direction of the connecting column, so that the limiting block can support the connecting column when the connecting column slides to the highest position.

[0014] Optionally, a roller is rotatably connected to the top of the detection rod, and the roller abuts against the conveyor belt.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This application discloses an adaptive 3D scanning and recognition system for longitudinal tearing of conveyor belts, comprising a support plate, a detection component, an adjustment component, a tear recognition body, and a compensation component. The detection rod, under the constant magnetic driving force of a second magnetic wheel on a first magnetic wheel, abuts against the conveyor belt. When the conveyor belt deforms, it pushes the detection rod down relative to the detection sleeve, allowing the detection rod to accurately detect the deformation of the conveyor belt. The contact force between the detection rod and the conveyor belt remains constant during the downward movement, preventing the detection rod from causing bulging or damage to the conveyor belt when pushed by the conveyor belt. While the detection rod slides relative to the detection sleeve, the adjustment contact slides relative to the resistive slide rail to adjust... The magnitude of the current in the electromagnet is adjusted so that its magnetic force changes in response to the sliding of the detection rod. This changing magnetic force drives the connecting column to slide, ensuring that the connecting column moves synchronously and in the same direction as the detection rod. As the connecting column slides, the distance between the first compensation block and the tear-detecting body can be adjusted by the compensation rod, sliding block, and telescopic rod. This adjusts the distance to compensate for the displacement difference of the tear-detecting body, allowing it to collect data in a floating manner. This enables the tear-detecting body to collect data from the conveyor belt at the optimal shooting distance without increasing the shooting gap in the protective shell. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a structural diagram of the detection component and the compensation component; Figure 3 This is a structural diagram of the adjustment component and the limit component; Figure 4 This is a cross-sectional view of the spiral groove; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 This is an exploded view of the dovetail groove and dovetail block.

[0017] Explanation of reference numerals in the attached figures: 1. Support plate; 2. Detection assembly; 21. Detection sleeve; 211. Spiral groove; 22. Detection rod; 221. Guide groove; 222. Roller; 23. Constant force drive unit; 231. Slider; 232. Guide rod; 233. First magnetic wheel; 234. Second magnetic wheel; 235. Motor; 3. Adjustment assembly; 31. Adjustment box; 32. Connecting column; 33. Permanent magnet plate; 34. Electromagnet; 341. Terminal; 35. Current adjustment unit; 351 1. Adjusting contact; 352. Resistance slide rail; 353. Power supply; 4. Longitudinal tear identification body; 5. Compensation component; 51. First compensation block; 511. First compensation slope; 512. Dovetail groove; 52. Second compensation block; 521. Second compensation slope; 522. Dovetail block; 53. Compensation power unit; 531. Telescopic rod; 532. Sliding block; 533. Compensation connecting rod; 6. Limiting component; 61. Limiting block; 611. Flexible pad; 62. Limiting electric cylinder. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0019] This application discloses an adaptive 3D scanning and recognition system for longitudinal tearing of conveyor belts. (Refer to...) Figure 1 An adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system includes a support plate 1, a detection component 2, an adjustment component 3, a longitudinal tear recognition body 4, and a compensation component 5.

[0020] Reference Figure 1 The support plate 1 is fixed to the frame of the conveyor belt and is located directly below the material receiving area of ​​the conveyor belt.

[0021] Reference Figure 2 The detection component 2 includes a detection sleeve 21, a detection rod 22, and a constant force drive unit 23.

[0022] The detection sleeve 21 is connected to the support plate 1, and the detection rod 22 slides through the detection sleeve 21. The constant force drive unit 23 is connected to the detection sleeve 21 and the detection rod 22 respectively. The constant force drive unit 23 is used to drive the detection rod 22 to slide out of the detection sleeve 21 and abut against the conveyor belt with a constant driving force. During the random deformation of the conveyor belt, the constant force drive unit 23 ensures that the detection rod 22 can always abut against the conveyor belt to ensure the detection accuracy of the detection rod 22. In addition, the constant force drive unit 23 makes it difficult for the abutment force of the detection rod 22 against the conveyor belt to increase due to the increase of the deformation of the conveyor belt, so that the conveyor belt is not prone to bulging or damage due to the reaction force of the detection rod 22.

[0023] Reference Figure 2 and Figure 3 The adjustment assembly 3 includes an adjustment box 31, a connecting column 32, a permanent magnet plate 33, an electromagnet 34, and a current adjustment part 35.

[0024] The adjustment box 31 is fixed to the support plate 1. The connecting column 32 slides vertically through the top of the adjustment box 31. The permanent magnet plate 33 is fixed to the end of the connecting column 32 located inside the adjustment box 31. The electromagnet 34 is fixed to the bottom inside the adjustment box 31. The electromagnet 34 and the permanent magnet plate 33 are arranged opposite each other. The polarity of the energized electromagnet 34 and the permanent magnet plate 33 is the same on the side closest to each other. The energized electromagnet 34 can drive the connecting column 32 to float and slide through magnetic thrust.

[0025] The current regulating unit 35 is connected to the detection rod 22 and electrically connected to the electromagnet 34. The current regulating unit 35 controls the current in the electromagnet 34 based on the sliding stroke of the detection rod 22 relative to the detection sleeve 21, so as to control the detection rod 22 and the connecting column 32 to slide synchronously and in the same direction with the same displacement. This allows the connecting column 32 and the detection rod 22 to adjust to the same displacement. At the same time, by controlling the current of the electromagnet 34, the driving force output by the electromagnet 34 is controlled, so that the driving force of the electromagnet 34 on the connecting column 32 can have excellent dynamic response performance, avoiding the problem of poor adjustment flexibility caused by inertia, and enabling the position adjustment of the connecting column 32 to accurately adapt to the deformation of the conveyor belt.

[0026] Reference Figure 2 The longitudinal tear identification body 4 is mounted on the connecting column 32. The longitudinal tear identification body 4 is used to scan and identify defects on the surface of the conveyor belt. The shooting position of the longitudinal tear identification body 4 is located at the center of the material receiving area of ​​the conveyor belt. The longitudinal tear identification body 4 can adjust its position as the connecting column 32 slides to meet its own shooting distance requirements. The shooting position of the longitudinal tear identification body 4 on the conveyor belt is the position where the conveyor belt is most deformed. The deformation of the arc-shaped deformed conveyor belt at the shooting position of the longitudinal tear identification body 4 is greater than the deformation at the contact position of the detection rod 22. Therefore, the compensation component 5 is needed to compensate for the adjustment of the longitudinal tear identification body 4.

[0027] The compensation component 5 is connected between the longitudinal tear recognition body 4 and the connecting post 32. The compensation component 5 is used to compensate for the adjustment displacement difference of the longitudinal tear recognition body 4 to improve the adjustment accuracy of the longitudinal tear recognition body 4. The adjustment displacement difference is the vertical displacement difference between the shooting position of the longitudinal tear recognition body 4 on the conveyor belt and the contact position of the detection rod 22 on the conveyor belt. The sliding displacement of the detection rod 22 plus the adjustment displacement difference equals the moving displacement of the longitudinal tear recognition body 4.

[0028] In use, when material falls onto the conveyor belt, the conveyor belt deforms in an arc shape due to gravity and the impact of falling material. Since the amount of material falling varies randomly, the amount of deformation of the conveyor belt also varies randomly. The arc-shaped deformed conveyor belt can push the detection rod 22 to slide relative to the detection sleeve 21. Under the drive of the constant force drive unit 23, the top of the detection rod 22 can always abut against the conveyor belt, and the abutting force on the conveyor belt is always constant. This allows the sliding displacement of the detection rod 22 to accurately reflect the deformation of the conveyor belt. At the same time, the detection rod 22 is not likely to apply an increasingly larger abutting force to the conveyor belt due to the large amount of deformation. This prevents the conveyor belt from bulging or being damaged due to the reaction force applied by the detection rod 22 when it is pushed by the large deformation.

[0029] The current adjustment unit 35 controls the magnitude of the current in the electromagnet 34 according to the sliding stroke of the detection rod 22 relative to the detection sleeve 21. Since the change in current causes a change in the magnetic force of the electromagnet 34, it is not easy to have inertia. This allows the electromagnet 34 to quickly drive the permanent magnet plate 33 to move in the sliding state of the detection rod 22. The permanent magnet plate 33 can drive the connecting post 32 to slide, so that the connecting post 32 can quickly respond to the detection result of the detection rod 22 and adjust its own position. During the process of the connecting post 32 and the detection rod 22 adjusting their positions synchronously and in the same direction, the height of the longitudinal tear recognition body 4 can be quickly adjusted.

[0030] During the process of sliding the connecting column 32 to adjust the position of the longitudinal tear recognition body 4, the compensation component 5 can compensate for the adjustment displacement difference of the longitudinal tear recognition body 4, thereby improving the accuracy of the position adjustment of the longitudinal tear recognition body 4 and making the position adjustment of the longitudinal tear recognition body 4 more precise.

[0031] Based on the above analysis, under the detection function of the detection rod 22, the magnetic drive function of the electromagnet 34, and the compensation function of the compensation component 5, the longitudinal tear identification body 4 can quickly adjust its position according to the deformation of the conveyor belt, so that the longitudinal tear identification body 4 can collect data in a floating manner. Thus, the longitudinal tear identification body 4 can collect data from the conveyor belt at the optimal shooting distance without increasing the shooting gap of the protective shell.

[0032] Specifically, refer to Figure 2 , Figure 4 and Figure 5 The constant force drive unit 23 includes a slider 231, a guide rod 232, a first magnetic wheel 233, and a second magnetic wheel 234.

[0033] Reference Figure 2 The detection sleeve 21 is rotatably connected to the support plate 1.

[0034] Reference Figure 2 and Figure 5The slider 231 is fixedly connected to the detection rod 22 and slidably disposed within a spiral groove 211 opened on the inner wall of the detection sleeve 21. Rotating the detection sleeve 21 drives the detection rod 22 to slide upward. The guide rod 232 is a rectangular rod and is fixedly connected to the support plate 1. The guide rod 232 is slidably disposed within a guide groove 221 opened along the sliding direction of the detection rod 22, and the guide rod 232 restricts the rotation of the detection rod 22. In order to improve the stability of the detection sleeve 21 driving the detection rod 22, two sliders 231 are symmetrically arranged.

[0035] Reference Figure 2 The first magnetic wheel 233 is fixedly connected to the detection sleeve 21. The second magnetic wheel 234 is located on one side of the first magnetic wheel 233. The second magnetic wheel 234 is connected to a motor 235, which is fixedly connected to the support plate 1. The output shaft of the motor 235 is fixedly connected to the second magnetic wheel 234. The second magnetic wheel 234 is used to magnetically drive the first magnetic wheel 233 to rotate. By presetting the magnitude of the magnetic driving force of the second magnetic wheel 234 on the first magnetic wheel 233, the detection rod 22 can be made to abut against the conveyor belt with a constant force, and the constant force applied by the detection rod 22 is unlikely to cause the conveyor belt to bulge or be damaged.

[0036] Motor 235 drives the second magnetic wheel 234 to rotate, which in turn drives the first magnetic wheel 233 to rotate. The first magnetic wheel 233 drives the detection sleeve 21 to rotate. Under the constraint of the guide rod 232, the detection rod 22 is difficult to rotate, allowing the detection sleeve 21 to drive the slider 231 to move upward through the spiral groove 211. The slider 231 can drive the detection rod 22 to abut against the conveyor belt. Since the magnetic driving force of the second magnetic wheel 234 on the first magnetic wheel 233 is constant, the abutting force of the detection rod 22 against the conveyor belt can be constant. When the conveyor belt squeezes the detection rod 22 down, it will only drive the detection sleeve 21 to rotate in the opposite direction, without changing the abutting force of the detection rod 22 against the conveyor belt. Thus, the detection rod 22 can abut against the conveyor belt with a constant abutting force.

[0037] Specifically, refer to Figure 2 and Figure 5 The current regulating unit 35 includes regulating contacts 351, a resistor slide rail 352, and a power supply 353.

[0038] Reference Figure 2 , Figure 3 and Figure 5An adjusting contact 351 is fixedly embedded in the detection rod 22, and a resistance slide rail 352 is fixedly embedded in the guide rod 232. The adjusting contact 351 abuts against the resistance slide rail 352 and is electrically connected to the power supply 353. The electromagnet 34 has two terminals 341 for energizing. The top of the resistance slide rail 352 is electrically connected to one terminal 341 of the electromagnet 34, and the other terminal 341 is electrically connected to the power supply 353. The power supply 353, adjusting contact 351, resistance slide rail 352, and electromagnet 34 form a complete current loop. By adjusting the contact position between the adjusting contact 351 and the resistance slide rail 352, the current in the current loop can be adjusted. When the adjusting contact 351 slides down relative to the resistance slide rail 352, the current in the current loop decreases. The resistance value of the resistance slide rail 352 can be designed according to actual needs to ensure consistent displacement between the detection rod 22 and the connecting post 32.

[0039] The current loop, consisting of power supply 353, adjusting contact 351, resistive slide rail 352, and electromagnet 34, can change the resistance value in the loop by changing the contact position between adjusting contact 351 and resistive slide rail 352. This allows the magnitude of the current in the current loop to be adjusted by moving adjusting contact 351, and the current of electromagnet 34 to be controlled based on the sliding stroke of detection rod 22. Since the top of resistive slide rail 352 is electrically connected to terminal 341 on electromagnet 34, when adjusting contact 351 slides down with detection rod 22, the portion of resistive slide rail 352 entering the current loop increases, which weakens the magnetic force of electromagnet 34. As a result, when detection rod 22 is pressed down, the magnetic force of electromagnet 34 weakens, allowing the position of the tear-recognition body 4 to be adjusted downward.

[0040] Specifically, refer to Figure 2 The compensation component 5 includes a first compensation block 51, a second compensation block 52, and a compensation power unit 53.

[0041] Reference Figure 2 and Figure 6 Two first compensation blocks 51 are symmetrically arranged and slidably connected to the longitudinal tear recognition body 4. Each of the two first compensation blocks 51 has a first compensation slope 511 at one end that is close to the other. The second compensation block 52 is fixed to the connecting post 32 and is located between the two first compensation blocks 51. The second compensation block 52 has two second compensation slopes 521 that are adapted to the first compensation slopes 511. The second compensation slopes 521 are attached to the first compensation slopes 511 one by one.

[0042] Reference Figure 2The compensation power unit 53 is used to drive the two first compensation blocks 51 to slide away from each other when the connecting post 32 slides down, and the compensation power unit 53 is used to drive the two first compensation blocks 51 to slide towards each other when the connecting post 32 slides up. When the two first compensation blocks 51 move away from each other or approach each other, the distance between the connecting post 32 and the longitudinal tear identification body 4 can be adjusted, thereby compensating for the adjustment displacement difference of the longitudinal tear identification body 4.

[0043] When the magnetic force of the electromagnet 34 changes to drive the connecting post 32 to slide, the compensation power unit 53 can drive the two first compensation blocks 51 to slide in a direction away from or close to each other, so that the distance between the two first compensation blocks 51 can be adjusted, and the second compensation block 52 can slide closer to or further away from the longitudinal tear identification body 4 through the second compensation slope 521 and the first compensation slope 511, so as to adjust the distance between the connecting post 32 and the longitudinal tear identification body 4. Thus, when the connecting post 32 slides, the adjustment displacement difference of the longitudinal tear identification body 4 can be compensated by the mutual sliding between the first compensation block 51 and the second compensation block 52.

[0044] Specifically, refer to Figure 2 The compensating power unit 53 includes a telescopic rod 531, a sliding block 532, and a compensating link 533.

[0045] Two telescopic rods 531, two sliding blocks 532, and two compensating connecting rods 533 are symmetrically arranged. The telescopic rod 531 corresponds one-to-one with the first compensating block 51, and the movable end of the telescopic rod 531 is fixed to the side of the first compensating block 51 away from the longitudinal tear identification body 4. The sliding blocks 532 are fixed to the telescopic rods 531 one-to-one, and the sliding blocks 532 are slidably connected to the top of the outside of the adjusting box 31. One end of the compensating connecting rod 533 is hinged to the sliding block 532 one-to-one, and the other end is hinged to the connecting post 32. The compensating connecting rod 533 is inclined. When the connecting post 32 slides down, the included angle between the two compensating connecting rods 533 increases, so as to drive the two sliding blocks 532 to slide in a direction away from each other.

[0046] When the connecting post 32 slides down, it drives the two compensating links 533 to swing synchronously, increasing the angle between them. The two compensating links 533 then drive the two sliding blocks 532 to slide away from each other. The sliding blocks 532 move the telescopic rod 531, which in turn drives the first compensating block 51 to slide. Under the gravity of the tear-recognition body 4, the first compensating inclined surface 511 slides relative to the second compensating inclined surface 521, reducing the distance between the connecting post 32 and the tear-recognition body 4. Conversely, when the connecting post 32 slides up, the angle between the two compensating links 533 decreases, increasing the distance between the connecting post 32 and the tear-recognition body 4, thus compensating for the adjustment displacement difference of the tear-recognition body 4.

[0047] Among them, reference Figure 6 In order to improve the stability of the sliding of the first compensation slope 511 relative to the second compensation slope 521, a dovetail block 522 is fixedly connected to the second compensation slope 521, and the dovetail block 522 is slidably disposed in the dovetail groove 512 opened on the corresponding first compensation slope 511.

[0048] Reference Figure 3 To prevent the permanent magnet plate 33 from colliding with the electromagnet 34 due to accidents or malfunctions, a limiting component 6 is provided inside the adjustment box 31. The limiting component 6 includes a limiting block 61, which is connected to the adjustment box 31 and located between the electromagnet 34 and the permanent magnet plate 33. The limiting block 61 is located on the downward trajectory of the connecting column 32. A flexible pad 611 is fixed on the side of the limiting block 61 closest to the permanent magnet plate 33. When the permanent magnet plate 33 collidees with the electromagnet 34 due to accidents or malfunctions, the permanent magnet plate 33 will first collide with the limiting block 61. The limiting block 61 can buffer the impact force of the permanent magnet plate 33 through the flexible pad 611. The limiting block 61 can prevent the permanent magnet plate 33 from colliding with the electromagnet 34, thereby making it less likely for the permanent magnet plate 33 to collide with the electromagnet 34 due to accidents or malfunctions.

[0049] Reference Figure 3 Furthermore, in order to adjust the position of the limiting block 61 so that the limiting block 61 can support the connecting column 32 when the whole system is powered off, the limiting assembly 6 also includes a limiting electric cylinder 62. The limiting electric cylinder 62 is fixedly connected to the adjusting box 31, and the limiting block 61 is fixedly connected to the movable end of the limiting electric cylinder 62. The limiting electric cylinder 62 is used to drive the limiting block 61 to move along the sliding direction of the connecting column 32 so that the limiting block 61 can support the connecting column 32 when the connecting column 32 slides to the highest position.

[0050] Before the system is powered off, material falling onto the conveyor belt stops, and the conveyor belt returns to its original state, allowing the connecting column 32 to slide up to its highest position. This causes the limiting cylinder 62 to extend, and the limiting cylinder 62 drives the limiting block 61 to move upward, so that the limiting block 61 can support the connecting column 32 that will slide freely down. After the system is powered on, the limiting cylinder 62 drives the limiting block 61 to move downward, so that the limiting block 61 can play a collision protection role.

[0051] Reference Figure 2 In order to prevent the detection rod 22 from damaging the conveyor belt, a roller 222 is rotatably connected to the top of the detection rod 22, and the roller 222 abuts against the conveyor belt; the detection rod 22 abuts against the conveyor belt through the roller 222, so that the sliding friction between the detection rod 22 and the conveyor belt can be transformed into rolling friction, thereby making it less likely for the detection rod 22 to slip on the conveyor belt and less likely to damage the conveyor belt.

[0052] The implementation principle of the adaptive conveyor belt longitudinal tear three-dimensional scanning recognition system in this application embodiment is as follows: During use, the conveyor belt deforms in an arc shape under the gravity and impact force of the material. The conveyor belt pushes the detection rod 22 down. Under the constant magnetic driving force of the second magnetic wheel 234 on the first magnetic wheel 233, the detection rod 22 abuts against the conveyor belt with a constant contact force to accurately detect the deformation of the conveyor belt and avoid damage to the conveyor belt. When the detection rod 22 slides, the magnitude of the current flowing through the electromagnet 34 is controlled by adjusting the contact point 351 and the resistive slide rail 352 so that the electromagnet 34 can drive the connecting column 32. Synchronously and in the same direction as the detection rod 22, the same displacement is adjusted. When the connecting column 32 slides, the compensation link 533, the sliding block 532 and the telescopic rod 531 can adjust the position of the first compensation block 51 to adjust the distance between the second compensation block 52 and the longitudinal tear recognition body 4. This allows the position adjustment of the longitudinal tear recognition body 4 to be compensated, so that without expanding the shooting gap of the protective shell, the longitudinal tear recognition body 4 can maintain the optimal shooting distance under dynamic adjustment. This allows the longitudinal tear recognition body 4 to meet the shooting distance of the high-speed 3D camera without expanding the shooting gap of the protective shell.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adaptive three-dimensional scanning and recognition system for longitudinal tearing of conveyor belts, characterized in that: It includes a support plate (1), a detection component (2), an adjustment component (3), a longitudinal tear identification body (4), and a compensation component (5). The support plate (1) is connected to the frame of the conveyor belt and is located directly below the material receiving area of ​​the conveyor belt. The detection assembly (2) includes a detection sleeve (21), a detection rod (22), and a constant force drive unit (23): The detection sleeve (21) is connected to the support plate (1), the detection rod (22) slides through the detection sleeve (21), and the constant force drive part (23) is connected to the detection sleeve (21) and the detection rod (22) respectively. The constant force drive part (23) is used to drive the detection rod (22) to slide out of the detection sleeve (21) and abut against the conveyor belt with a constant driving force. The adjustment assembly (3) includes an adjustment box (31), a connecting column (32), a permanent magnet plate (33), an electromagnet (34), and a current adjustment part (35); The adjustment box (31) is connected to the support plate (1), the connecting column (32) slides through the top of the adjustment box (31), the permanent magnet plate (33) is connected to the end of the connecting column (32) located inside the adjustment box (31), the electromagnet (34) is connected to the bottom of the adjustment box (31), the electromagnet (34) and the permanent magnet plate (33) are arranged opposite each other, and the polarities of the energized electromagnet (34) and the permanent magnet plate (33) are the same on the side closest to each other; The current adjustment unit (35) is connected to the detection rod (22) and electrically connected to the electromagnet (34). The current adjustment unit (35) controls the current in the electromagnet (34) based on the sliding stroke of the detection rod (22) relative to the detection sleeve (21) so as to control the detection rod (22) and the connecting column (32) to slide synchronously and in the same direction with the same displacement. The longitudinal tear identification body (4) is set on the connecting column (32). The longitudinal tear identification body (4) is used to scan and identify defects on the surface of the conveyor belt, and the shooting position is located at the center of the material receiving area of ​​the conveyor belt. The compensation component (5) is connected between the longitudinal tear identification body (4) and the connecting column (32). The compensation component (5) is used to compensate for the adjustment displacement difference of the longitudinal tear identification body (4). The adjustment displacement difference is the vertical displacement difference between the shooting position of the longitudinal tear identification body (4) on the conveyor belt and the contact position of the detection rod (22) on the conveyor belt. The sliding displacement of the detection rod (22) plus the adjustment displacement difference is equal to the moving displacement of the longitudinal tear identification body (4).

2. The adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system according to claim 1, characterized in that: The detection sleeve (21) is rotatably connected to the support plate (1). The constant force drive unit (23) includes a slider (231), a guide rod (232), a first magnetic wheel (233), and a second magnetic wheel (234). The slider (231) is connected to the detection rod (22). The slider (231) is slidably disposed in a spiral groove (211) opened on the inner wall of the detection sleeve (21). The guide rod (232) is a polygonal rod and is connected to the support plate (1). The guide rod (232) is slidably set in the guide groove (221) opened in the sliding direction of the detection rod (22). The first magnetic wheel (233) is connected to the detection sleeve (21). The second magnetic wheel (234) is located on one side of the first magnetic wheel (233). The second magnetic wheel (234) is connected to a motor (235). The motor (235) is mounted on the support plate (1). The second magnetic wheel (234) is used to magnetically drive the first magnetic wheel (233) to rotate.

3. The adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system according to claim 2, characterized in that: The current regulating unit (35) includes an regulating contact (351), a resistance slide rail (352), and a power supply (353). The regulating contact (351) is embedded in the detection rod (22), the resistance slide rail (352) is embedded in the guide rod (232), the regulating contact (351) abuts against the resistance slide rail (352), and the regulating contact (351) is electrically connected to the power supply (353). The electromagnet (34) is provided with two terminals (341) for energizing. The top of the resistance slide rail (352) is electrically connected to one of the terminals (341) on the electromagnet (34), and the other terminal (341) on the electromagnet (34) is electrically connected to the power supply (353). The power supply (353), the regulating contact (351), the resistance slide rail (352), and the electromagnet (34) form a complete current loop.

4. The adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system according to claim 1, characterized in that: The compensation component (5) includes a first compensation block (51), a second compensation block (52), and a compensation power unit (53). Two first compensation blocks (51) are symmetrically arranged and are slidably connected to the longitudinal tear identification body (4). The two first compensation blocks (51) are provided with a first compensation slope (511) at their respective ends. The second compensation block (52) is connected to the connecting post (32) and located between the two first compensation blocks (51). The second compensation block (52) is provided with two second compensation slopes (521) adapted to the first compensation slope (511). The second compensation slopes (521) are fitted and abutted against the first compensation slopes (511) one by one. The compensation power unit (53) is used to drive the two first compensation blocks (51) to slide away from each other when the connecting post (32) slides down, and the compensation power unit (53) is used to drive the two first compensation blocks (51) to slide towards each other when the connecting post (32) slides up.

5. The adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system according to claim 4, characterized in that: The compensation power unit (53) includes a telescopic rod (531), a sliding block (532), and a compensation connecting rod (533). There are two telescopic rods (531), two sliding blocks (532), and two compensation connecting rods (533). The telescopic rod (531) corresponds one-to-one with the first compensation block (51). The movable end of the telescopic rod (531) is connected to the first compensation block (51). The sliding block (532) is connected one-to-one with the telescopic rod (531) and is slidably connected to the adjustment box (31). One end of the compensation connecting rod (533) is hinged to the sliding block (532) and the other end is hinged to the connecting column (32). The compensation connecting rod (533) is inclined. When the connecting column (32) slides down, the included angle of the two compensation connecting rods (533) increases, so as to drive the two sliding blocks (532) to slide in a direction away from each other.

6. The adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system according to claim 1, characterized in that: The adjustment box (31) is provided with a limiting assembly (6), which includes a limiting block (61). The limiting block (61) is connected to the adjustment box (31) and is located between the electromagnet (34) and the permanent magnet plate (33). The limiting block (61) is located on the downward trajectory of the connecting column (32). A flexible pad (611) is provided on the side of the limiting block (61) close to the permanent magnet plate (33).

7. The adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system according to claim 6, characterized in that: The limiting assembly (6) also includes a limiting electric cylinder (62), which is connected to the adjusting box (31). The limiting block (61) is connected to the movable end of the limiting electric cylinder (62). The limiting electric cylinder (62) is used to drive the limiting block (61) to move along the sliding direction of the connecting column (32) so that the limiting block (61) can support the connecting column (32) when the connecting column (32) slides to the highest position.

8. The adaptive conveyor belt longitudinal tear three-dimensional scanning and recognition system according to claim 1, characterized in that: A roller (222) is rotatably connected to the top of the detection rod (22), and the roller (222) abuts against the conveyor belt.

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