Cross laser detection device for belt tearing of belt conveyor

Abstract

The invention relates to the technical field of automatic detection of belt conveyors, in particular to a cross-shaped laser detection device for belt tearing of a belt conveyor. The laser transmitter is rotationally arranged on one mounting frame; the high-speed camera is rotationally arranged on the other mounting frame, and a signal processing module used for receiving and processing digital signals is arranged in the high-speed camera; the alarm is arranged on the rear side of the machine shell and electrically connected with the signal processing module. A cross-shaped laser detection system formed by a high-power linear laser transmitter and a high-speed camera is used for monitoring the surface state of the belt in real time, so that tiny changes, caused by tearing, of the surface of the belt are accurately captured, the risk of accidents caused by the fact that defects are not detected is effectively reduced, and the safety of the belt is improved. When it is detected that the belt is torn, an alarm can be given out immediately through the alarm; in addition, a loop bar frame, a telescopic frame and a buckle plate are further arranged, so that the equipment can be rapidly matched with belt conveyors of different models, and the installation process is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic detection of belt conveyors, and particularly relates to a cross laser detection device for belt tearing of a belt conveyor. Background Art

[0002] As a core device for material transportation in industries such as mines, ports, and power plants, during long-term operation, the belt of a belt conveyor is prone to tearing due to material impact, mechanical wear, or accidental factors. If these tears are not detected and processed in a timely manner, it may lead to material leakage, transportation interruption, and even serious safety accidents and equipment damage, bringing huge economic losses and production risks to enterprises.

[0003] Therefore, it is particularly important to effectively detect the belt tearing of a belt conveyor. However, the existing detection methods have many limitations. For example, the common and traditional manual inspection method has problems of low efficiency and high labor intensity, and is prone to missed inspections; while another common contact sensor detection method, although it can achieve a certain degree of automatic detection, requires the belt to be in direct contact with the sensor, which not only easily interferes with material transportation, but also increases the difficulty of installation and maintenance, and has low detection sensitivity to micro-cracks. In addition, existing detection equipment is often difficult to adapt to different models of belt conveyors during installation, with problems such as a cumbersome installation process and difficulty in rapid assembly, and cannot meet the requirements of real-time and accurate detection of belt tearing in actual production.

[0004] To solve the above problems, it is necessary to develop a cross laser detection device for belt tearing of a belt conveyor. This device can real-time monitor the surface state of the belt through a high-precision laser scanning system, quickly identify micro-cracks and tears, achieve early warning, thereby effectively improving the detection efficiency and accuracy, and reducing production risks. Summary of the Invention

[0005] In order to overcome the above-mentioned drawbacks existing in the prior art, the present invention provides a cross laser detection device for belt tearing of a belt conveyor, including:

[0006] A bottom frame, on which a housing is provided, and two toughened glass windows are provided on the housing;

[0007] Two mounting frames, which are spaced apart and arranged inside the bottom frame;

[0008] A laser emitter, which is rotatably arranged on one of the mounting frames, is used for laser irradiation on the belt surface, and converts the reflected laser image into a digital signal;

[0009] A high-speed camera, which is rotatably arranged on the other mounting frame, and a signal processing module for receiving and processing digital signals is built in the high-speed camera;

[0010] An alarm, which is arranged at the rear side of the machine case and electrically connected to the signal processing module;

[0011] Rod sleeve frames are arranged on both sides of the bottom frame. Telescopic frames are slidably embedded in the rod sleeve frames. There are two buckle plates, and hydraulic cylinders with telescopic ends facing downwards are installed on both buckle plates. The telescopic ends of the hydraulic cylinders are connected to the ends of the adjacent telescopic frames.

[0012] Furthermore, the laser emitter is a high-power linear laser, and the emitted laser forms a light curtain that is perpendicular and uniform to the running direction of the belt of the belt conveyor.

[0013] Furthermore, it also includes a clamping rod and an elastic member I. The clamping rods are symmetrically and slidably penetrated through the mutually approaching ends of the two telescopic frames on both sides. An elastic member I is arranged between the clamping rods and the corresponding telescopic frames. The rod sleeve frames are provided with clamping grooves arranged at intervals in a row and adapted to be clamped with the corresponding clamping rods.

[0014] Furthermore, it also includes a sliding frame, a fitting plate, an elastic member II and a buffer pad. The sliding frame is slidably arranged through the buckle plate in a penetrating manner. The end of the sliding frame located inside the buckle plate is connected with the fitting plate. An elastic member II is arranged between the fitting plate and the inner wall of the corresponding buckle plate. A buffer pad is arranged on the inner wall of the other side of the buckle plate and is arranged opposite to the fitting plate on the same side.

[0015] Furthermore, it also includes an adjusting rod, a cushion pad and a fixing bolt. The adjusting rods penetrating through the machine case are connected to the hinge joints on one side of the laser emitter and the high-speed camera respectively. Cushion pads are arranged at the hinge joints on the other side of the laser emitter and the high-speed camera. Fixing bolts adapted to the layout and quantity of the cushion pads are threadedly penetrated through the other side of the machine case, and the ends of the fixing bolts are in contact and cooperation with the adjacent cushion pads.

[0016] Furthermore, it also includes a ventilation frame, a barrier net, a heat dissipation fan and a hinge. A ventilation frame is arranged at the bottom of the bottom frame. The top surface of the ventilation frame is provided with holes at intervals and internally provided with a barrier net and communicating with the bottom frame. Heat dissipation fans are installed inside both ends of the ventilation frame. The two heat dissipation fans on both sides respectively perform the exhausting and exhausting operations. Hinges are arranged in a row and hinged at the bottoms of both ends of the ventilation frame.

[0017] Furthermore, it also includes an eccentric motor, a connecting rod assembly and a dust scraping plate. The eccentric motors are installed inside the machine case and are respectively located below the two toughened glass windows. The output ends of the eccentric motors are respectively connected with connecting rod assemblies located outside the machine case. Dust scraping plates for wiping the adjacent toughened glass windows are arranged on the connecting rod assemblies.

[0018] Furthermore, the connecting rod assembly includes a connecting rod I connected to the output end of the eccentric motor. A connecting rod II is rotatably arranged on the machine case and is located beside the connecting rod I. A connecting plate is hinged between the upper end of the connecting rod II beside and the connecting rod I. The connecting plate is connected with the corresponding dust scraping plate.

[0019] Based on overcoming the shortcomings of the prior art, the beneficial effects that the present invention can achieve are as follows:

[0020] 1. The present invention uses a cross-laser detection system constructed by a high-power linear laser emitter and a high-speed camera to realize real-time monitoring of the surface state of the belt, thereby accurately capturing the minute changes on the belt surface caused by tearing. Its non-contact detection method significantly improves the detection accuracy compared with traditional technologies, especially suitable for detecting fine tears or cracks, thus effectively reducing the risk of accidents caused by undetected defects. At the same time, the collected information is converted into digital signals for processing, and a warning can be immediately issued through an alarm when a belt tear is detected, realizing early warning and helping to prevent accidents from occurring; in addition, the device is also configured with components including a sleeve rod frame, a telescopic frame, and a buckle plate, enabling the equipment to quickly adapt to different models of belt conveyors, simplifying the installation process and facilitating flexible adjustment of the detection angle and position according to actual needs.

[0021] 2. Through the cooperation of the fitting plate and the buffer pad, and combined with the application of elastic components, the present invention adds a shock-absorbing design to the device, reduces the vibration transmission of the belt to the equipment, maintains a stable working state, and further improves the reliability and durability of the device.

[0022] 3. Utilizing the adjustment function of the hydraulic cylinder and the adjustment rod, the present invention can effectively control the sinking position of the overall device and ensure that the irradiation height of the laser emitter and the high-speed camera is increased as much as possible to ensure complete coverage of the belt surface and provide a more uniform irradiation effect.

[0023] 4. To ensure that the equipment can still maintain good performance during long-term operation, the present invention adds a ventilation frame composed of a cooling fan, a barrier net, and a hinge, which reduces the entry of dust and also ensures that the equipment can operate at an appropriate temperature, avoiding overheating from affecting its performance.

[0024] 5. The present invention is equipped with a dust scraping plate, which is driven by an eccentric motor through a connecting rod assembly and can regularly clean the tempered glass window to ensure unobstructed vision, thereby guaranteeing the continuous and efficient operation of the device. Brief Description of the Drawings

[0025] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0026] Figure 2 is a three-dimensional structural sectional view of components such as the bottom frame, mounting frame, and laser emitter of the present invention.

[0027] Figure 3 is a three-dimensional structural schematic diagram of components such as the telescopic frame, buckle plate, and hydraulic cylinder of the present invention.

[0028] Figure 4 is for the present inventionFigure 3 An enlarged schematic view of part A.

[0029] Figure 5 A three-dimensional structural sectional view of parts such as the sliding frame, fitting plate, and buffer pad of the present invention.

[0030] Figure 6 A three-dimensional structural sectional view of parts such as the adjusting rod, abutting pad, and fixing bolt of the present invention.

[0031] Figure 7 A three-dimensional structural sectional view of parts such as the barrier net, cooling fan, and hinge of the present invention.

[0032] Figure 8 A three-dimensional structural sectional view of parts such as the eccentric motor, connecting rod 1, and dust scraping plate of the present invention.

[0033] The reference numerals in the drawings provided by the present invention are: 1, bottom frame; 11, casing; 12, tempered glass window; 2, mounting frame; 3, laser emitter; 4, high-speed camera; 5, alarm; 6, sleeve rod frame; 61, telescopic frame; 611, clamping rod; 612, elastic member 1; 613, card slot; 62, buckle plate; 63, hydraulic cylinder; 7, sliding frame; 71, fitting plate; 72, elastic member 2; 73, buffer pad; 8, adjusting rod; 81, abutting pad; 82, fixing bolt; 9, ventilation frame; 91, barrier net; 92, cooling fan; 93, hinge; 10, eccentric motor; 101, connecting rod 1; 102, connecting rod 2; 103, connecting plate; 104, dust scraping plate. Detailed implementation manners

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0035] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The technical solutions of the present invention will be clearly and completely described below with reference to the drawings. It should be noted that the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Embodiment 1: A cross laser detection device for belt tearing of a belt conveyor, as Figures 1-4 shown, includes:

[0037] Bottom frame 1, on the top of the bottom frame 1 is covered with a machine case 11. The middle part on the upper side of the machine case 11 is in a concave shape, which divides it into front and rear parts. The front sides of the two parts are both inclined planes and are respectively provided with a toughened glass window 12, which is convenient for detection and observation, and at the same time increases the overall safety and durability of the equipment;

[0038] Mounting frames 2, the number of which is two. The mounting frames 2 are arranged in the bottom frame 1 at intervals in the front and rear directions;

[0039] Laser emitter 3, which is rotatably arranged on one of the mounting frames 2. The laser emitter 3 is a high-power linear laser. The laser emitted forms a light curtain perpendicular and uniform to the running direction of the belt of the belt conveyor, so that the belt surface is covered with a laser beam of a specific wavelength and power, forming a uniform cross-shaped laser irradiation area. When the belt is in a normal state, the reflection or transmission of the laser beam on the belt surface is relatively stable; once the belt is torn, the surface structure of the torn part changes, which will affect the reflection and transmission characteristics of the laser, and can convert the situation of the reflected laser image into a digital signal to provide detection information in real time and quickly;

[0040] High-speed camera 4, which is rotatably arranged on the other mounting frame 2. This makes the high-speed camera 4 and the laser emitter 3 respectively correspond to a toughened glass window 12. And the high-speed camera 4 is internally provided with a signal processing module for receiving and processing digital signals. The signal processing module uses advanced image processing algorithms to denoise, extract features and analyze and judge the collected laser reflection images, and can set a threshold to determine whether the belt is torn;

[0041] Alarm 5, which is arranged at the rear side of the machine case 11, and the alarm 5 is electrically connected to the signal processing module;

[0042] Specifically, the laser emitter 3 is internally provided with a laser receiving module, and there is a good alignment relationship between the emission module and the laser receiving module of the laser emitter 3. When the emission module of the laser emitter 3 starts to work, it emits a laser beam of a specific wavelength and power, forming a light curtain irradiating on the belt surface. At the same time, the laser receiving module is in a receiving state, ready to receive the laser signal reflected or transmitted by the belt surface.

[0043] When the belt is running normally, the signals received by the laser receiving module are relatively stable. The signal processing module processes and analyzes these signals in real time, extracts feature information and compares it with the preset normal state threshold to judge whether the belt is in a normal running state.

[0044] If the belt tears, the laser reflection or transmission signal at the torn part changes, and the signal received by the laser receiving module also becomes abnormal accordingly. After the signal processing module receives and detects this abnormal change, it determines that the belt has torn through algorithm analysis. Then, it converts the situation of the reflected laser image into a digital signal and transmits the signal to the alarm 5, enabling it to receive the signal and perform early warning processing. At the same time, the high-speed camera 4 synchronously takes pictures of the belt image. Since the device itself is equipped with a data transmission module inside, it can immediately send the detection data (detection information, images, and alarm signals) to the monitoring center to achieve remote monitoring and data analysis. Then, the staff can, according to the alarm signal and the data from the monitoring center, stop the machine in time to check the tearing situation of the belt and take corresponding maintenance measures, such as repairing the torn part of the belt or replacing the belt, etc., to ensure that the belt conveyor can resume normal operation as soon as possible.

[0045] More attentively, the laser emitter 3 should select a laser module that can work continuously for 8000 hours, has an irradiation angle of 110 degrees, and an operating temperature range of -20°C to 70°C, so as to achieve higher precision and stronger stability, thereby improving the irradiation clarity and the overall performance of the equipment. In addition, to meet the requirements of different usage scenarios, the laser emitter 3 should support customization of multiple types of lenses to further optimize its performance. Moreover, with the introduction of the high-speed camera 4, it should be able to be equipped with high-speed camera 4 lenses of various focal lengths and select appropriate lenses according to different belt widths to better cooperate with the work of the laser emitter 3 and enhance the adaptability and flexibility of the entire detection device, thus more effectively achieving precise detection of the belt state of the belt conveyor.

[0046] The sleeve rod frames 6 are fixedly arranged on the left and right sides of the bottom frame 1. A telescopic frame 61 is slidably embedded in the sleeve rod frames 6. The telescopic frame 61 can slide in the left-right direction along the sleeve rod frames 6. There are two buckle plates 62. Grooves for clamping and assembling are opened in the buckle plates 62. Hydraulic cylinders 63 with their telescopic ends facing down are installed on the buckle plates 62. The telescopic ends of the hydraulic cylinders 63 are connected to the ends of the adjacent telescopic frame 61. By the way of clamping with the grooves of the buckle plates 62, the situation of drilling holes for installation at the usage site can be reduced, and it can be coordinated with the telescopic adjustment of the sleeve rod frames 6 and the telescopic frame 61 to adapt to the assembly widths of various belt conveying devices, simplify the installation process, reduce the installation time, and improve the installation accuracy.

[0047] such as Figure 3 and Figure 4As shown, it further includes a clamping rod 611 and a first elastic member 612. Symmetrically arranged up and down clamping rods 611 are slidably penetrated through the mutually approaching ends of the two telescopic frames 61. A first elastic member 612 is arranged between the clamping rod 611 and the corresponding telescopic frame 61. In this embodiment, the first elastic member 612 is a spring, which provides a necessary elastic force for the corresponding clamping rod 611. The sleeve rod frame 6 is provided with card slots 613 arranged at intervals and adapted to be clamped with the corresponding clamping rods 611, so as to fix the position between the sleeve rod frame 6 and the telescopic frame 61.

[0048] During use, first determine the installation position of the belt conveyor (allowing it to be assembled at the plumb bob, belt turnover, and return belt at the discharge port of the belt of the belt conveyor). Then, by pulling the telescopic frame 61, it slides along the corresponding sleeve rod frame 6. The clamping rod 611 follows the telescopic frame 61 and slides adaptively. The first elastic member 612 deforms accordingly. Until the telescopic frame 61 stops, the first elastic member 612 resets, and the connected clamping rod 611 is inserted into the card slot 613 at the corresponding position, thereby fixing the position between the telescopic frame 61 and the sleeve rod frame 6 and completing the adjustment of the device width. Subsequently, the two side buckles 62 can be respectively clamped on one side of the bracket of the belt conveyor, so that the groove of the buckle 62 is completely fitted with the bracket. Then, ensure that the lenses of the laser emitter 3 and the high-speed camera 4 are aligned with the detection belt. According to the use requirements, the hydraulic cylinder 63 can be started to further adjust the overall sinking position of the device, ensuring a safe and effective detection distance between the machine shell 11 and its internal detection components and the belt. Then, with the operation of the belt conveyor, real-time tear detection can be carried out in combination with the above detection operations to achieve accurate and rapid effective detection.

[0049] Embodiment 2: On the basis of Embodiment 1, as Figure 5 shown, it further includes a sliding frame 7, a fitting plate 71, a second elastic member 72, and a buffer pad 73. A sliding frame 7 is slidably arranged through the buckle 62. The sliding frame 7 can slide in the left-right direction along the buckle 72. A fitting plate 71 is connected to the end of the sliding frame 7 located inside the buckle 62. A second elastic member 72 is arranged between the fitting plate 71 and the inner wall of the corresponding buckle 62. In this embodiment, the elastic member 72 is a spring. A buffer pad 73 is arranged on the inner wall of the other side of the buckle 62 and is arranged opposite to the fitting plate 71 on the same side. The buffer pad 73 and the fitting plate 71 provide an additional protective layer when contacting the installation location, and combined with the setting of the second elastic member 72, it can effectively disperse vibration conduction, reduce the wear of the buckle 62, and extend the service life of the equipment.

[0050] As Figure 6As shown in the figure, it further includes an adjusting rod 8, a cushion 81 and a fixing bolt 82. The adjusting rod 8 penetrating through the housing 11 is connected to the hinge joints on one side of the laser emitter 3 and the high-speed camera 4. By rotating the corresponding adjusting rod 8, the angles of the laser emitter 3 or the high-speed camera 4 can be adjusted. And a cushion 81 is provided at the hinge joint on the other side of the laser emitter 3 and the high-speed camera 4. A fixing bolt 82 adapted to the layout and quantity of the cushion 81 is threadedly penetrated through the other side of the housing 11. The end of the fixing bolt 82 is in contact and cooperation with the adjacent cushion 81. After the overall angular position is adjusted, the fixing bolt 82 can be rotated to make it contact and press the corresponding cushion 81, so as to generate friction and fix the positions of the corresponding laser emitter 3 and high-speed camera 4.

[0051] As Figure 1 and Figure 7 shown in the figure, it further includes a ventilation frame 9, a barrier net 91, a cooling fan 92 and a hinge 93. A ventilation frame 9 is provided at the bottom of the bottom frame 1. The ventilation frame 9 is arranged along the front and back. And holes with built-in barrier nets 91 and communicating with the bottom frame 1 are spacedly arranged on the top surface of the ventilation frame 9. There are three holes to ensure air circulation while preventing dust and foreign objects from entering. Cooling fans 92 are installed inside the front and back ends of the ventilation frame 9 respectively. The two side cooling fans 92 are respectively responsible for extracting cold air and discharging hot air, effectively reducing the overall working temperature of the device, so as to maintain the performance and stability of the equipment. Hinges 93 are arranged in a row and hinged at the bottom of both ends of the ventilation frame 9. The hinges 93 allow a certain opening and closing angle adjustment, making the air flow more transparent and effectively preventing foreign objects from being blocked.

[0052] As Figure 8 shown in the figure, it further includes an eccentric motor 10, a connecting rod assembly and a dust scraping plate 104. Eccentric motors 10 are installed inside the housing 11 respectively under the two toughened glass windows 12. Connecting rod assemblies located outside the housing 11 are connected to the output ends of the eccentric motors 10. Dust scraping plates 104 for wiping the adjacent toughened glass windows 12 are arranged on the connecting rod assemblies.

[0053] As Figure 8 shown in the figure, the connecting rod assembly includes a connecting rod one 101 connected to the output end of the eccentric motor 10. A connecting rod two 102 rotatably arranged on the housing 11 is located beside the connecting rod one 101. A connecting plate 103 is hinged between the upper end of the connecting rod two 102 and the adjacent connecting rod one 101. The connecting plate 103 is connected to the corresponding dust scraping plate 104.

[0054] Specifically, a timer is provided on each eccentric motor 10, which can regularly start the eccentric motor 10, thereby driving the connected connecting rod one 101 to rotate, and then synchronously pulling the connected connecting rod two 102 and the dust scraping plate 104 through the connecting plate 103. This is the principle of the windshield wiper in the prior art. Thus, through the above cooperation, the swinging of the dust scraping plate 104 is driven, so that it wipes along the surface of the corresponding tempered glass window 12, thereby removing dust and stains, making the vision more clear when the laser emitter 3 and the high-speed camera 4 work, and ensuring the stable progress of the detection process.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A belt conveyor belt tear cross laser detection device, comprising: A bottom frame (1), wherein a housing (11) is provided on the bottom frame (1), and two tempered glass windows (12) are provided on the housing (11); It is characterized by further comprising: two mounting frames (2), the mounting frames (2) being arranged at intervals within the bottom frame (1); A laser emitter (3) is rotatably mounted on one of the mounting frames (2) and is used for irradiating the surface of the belt with laser light and converting the reflected laser image into a digital signal; A high-speed camera (4) is rotatably mounted on another mounting frame (2), wherein the high-speed camera (4) has a built-in signal processing module for receiving and processing digital signals; An alarm (5) is arranged on the rear side of the housing (11), and the alarm (5) is electrically connected to the signal processing module; The sleeve rod frame (6) is arranged on both sides of the bottom frame (1), and a telescopic frame (61) is slidably embedded in the sleeve rod frame (6). Two gusset plates (62) are provided, and a hydraulic cylinder (63) with a telescopic end facing downward is installed on each of the gusset plates (62). The telescopic end of the hydraulic cylinder (63) is connected to the adjacent end of the telescopic frame (61).

2. The cross laser detection device for belt tearing of a belt conveyor according to claim 1, characterized in that, The laser emitter (3) is a high-power linear laser, and the laser emitted forms a uniform light curtain perpendicular to the running direction of the belt of the belt conveyor.

3. The cross laser detection device for belt tearing of a belt conveyor according to claim 2, characterized in that, The invention also includes a clamping rod (611) and an elastic member (612). The clamping rod (611) is symmetrically and slidably penetrated on the ends of the telescopic frames (61) on both sides that are close to each other. An elastic member (612) is provided between the clamping rod (611) and the corresponding telescopic frame (61). The sleeve rod frame (6) is provided with clamping grooves (613) that are arranged and spaced apart and are adapted to be clamped with the corresponding clamping rod (611).

4. The cross laser detection device for belt tearing of a belt conveyor according to claim 3, characterized in that, The invention also includes a sliding frame (7), a bonding plate (71), a second elastic member (72) and a buffer pad (73). The sliding frame (7) is provided on the buckle plate (62) in a sliding manner. The sliding frame (7) is connected to the bonding plate (71) at one end inside the buckle plate (62). The second elastic member (72) is provided between the bonding plate (71) and the inner wall of the corresponding buckle plate (62). The buffer pad (73) is arranged on the inner wall of the other side of the buckle plate (62) and is arranged opposite to the bonding plate (71) on the same side.

5. The cross laser detection device for belt tearing of a belt conveyor according to claim 4, characterized in that The invention also includes an adjusting rod (8), a pad (81) and a fixing bolt (82); the laser emitter (3) and the high-speed camera (4) are both connected to an adjusting rod (8) that passes through the housing (11) at a hinge on one side; a pad (81) is provided at a hinge on the other side of the laser emitter (3) and the high-speed camera (4); a fixing bolt (82) that matches the layout and number of the pads (81) is threadedly passed through the other side of the housing (11); and the end of the fixing bolt (82) contacts and cooperates with the adjacent pad (81).

6. A cross laser detection device for belt tearing of a belt conveyor according to claim 5, characterized in that, It further includes a ventilation frame (9), a barrier net (91), a cooling fan (92) and a hinge (93). A ventilation frame (9) is provided at the bottom of the bottom frame (1). The top surface of the ventilation frame (9) is provided with apertures at intervals, which are internally provided with a barrier net (91) and communicate with the bottom frame (1). Cooling fans (92) are installed inside both ends of the ventilation frame (9), and the two side cooling fans (92) respectively correspond to the exhaust operation. Hinges (93) are arranged in a row and hinged at the bottom of both ends of the ventilation frame (9).

7. A cross laser detection device for belt tearing of a belt conveyor according to claim 6, characterized in that, It further includes an eccentric motor (10), a connecting rod assembly and a dust scraping plate (104). The eccentric motor (10) is installed inside the machine shell (11) and is respectively located below the two toughened glass windows (12). The output ends of the eccentric motor (10) are respectively connected with a connecting rod assembly located outside the machine shell (11). A dust scraping plate (104) for wiping the adjacent toughened glass window (12) is arranged on the connecting rod assembly.

8. A cross laser detection device for belt tearing of a belt conveyor according to claim 7, characterized in that, The connecting rod assembly includes a first connecting rod (101) connected to the output end of the eccentric motor (10). A second connecting rod (102) is rotatably arranged on the machine shell (11) beside the first connecting rod (101). An adapter plate (103) is hinged between the upper end of the second connecting rod (102) beside it and the first connecting rod (101). The adapter plate (103) is connected to the corresponding dust scraping plate (104).

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