Device for detecting defects of running belt of conveyor

Abstract

The utility model discloses a conveyor running belt defect detection device, which comprises a detection sensor, the detection sensor is arranged below a conveyor running belt, the detection sensor comprises an image collector and a laser transmitter, the image collector and the laser transmitter are fixed in a closed shell, and the shell is provided with an image sensor. The detection sensor is arranged below a conveyor running belt through a shell, the end face of the side, facing the lower portion of the running belt, of the shell is a perspective window end face with transparent glass, the detection sensor right faces the belt through a perspective window, and a dust removal mechanism is arranged on the shell and comprises an air cylinder arranged on the side wall of the shell. A telescopic arm of the air cylinder drives a right-angle arm to reciprocate along a guide shaft, a brush in contact with the transparent glass is arranged on the right-angle arm, and the reciprocating right-angle arm drives the brush to remove dust on the outer surface of the transparent glass. According to the utility model, the cleaning mechanism is arranged, so that the detection stability is improved, and false detection and missing detection are avoided.

Description

Technical Field

[0001] The utility model relates to a device for detecting defects of a conveyor belt. Background Art

[0002] When the belt surface of the mine conveyor is torn, perforated or peeled off during operation, it will directly affect production safety if it is not discovered and handled in time. Therefore, real-time monitoring of the running belt is a necessary measure to prevent accidents. The current means of prevention is usually to set up sensors, such as photoelectric sensors, to detect whether there is a tear or perforation of the belt. However, it can only detect when the belt is torn or perforated. It can only be a point-line detection, with a narrow detection surface, and cannot be detected as a whole. In addition, due to the harsh working environment of the mine conveyor, the detection sensor is often contaminated and blocked, making the detection unstable, and false detection and missed detection often occur. Summary of the invention

[0003] In view of the above problems, the purpose of the utility model is to provide a detection device for conveyor belt defects. By using a 3D camera and a laser emitter as detection sensors to obtain the surface image of the running belt, and setting it in a closed box with a visual window, and arranging an automatic cleaning device on the visual window, the overall detection of the belt cross section can be achieved, and the obstruction of the detection sensor by dust is eliminated.

[0004] In order to achieve the above purpose, the solution of the utility model is:

[0005] A detection device for conveyor belt defects includes at least one group of detection sensors, which are arranged below the conveyor belt, wherein: the detection sensor is an image collector and a laser emitter, the image collector and the laser emitter are fixed in a closed shell, the detection sensor is arranged below the conveyor belt through the shell, the end face of the shell facing below the running belt is a perspective window end face with transparent glass, the detection sensor faces the belt through the perspective window, a dust removal mechanism is arranged on the shell, the dust removal mechanism includes a cylinder arranged on the side wall of the shell, the telescopic arm of the cylinder drives a right-angle arm to reciprocate along a guide shaft, the right-angle arm is provided with a brush that contacts the transparent glass, and the reciprocating right-angle arm drives the brush to remove dust on the outer surface of the transparent glass.

[0006] The plan is further as follows: when the conveyor frame structure supports the belt cross-section to run in a curved state, at least two groups of detection sensors are arranged below the conveyor running belt along the belt travel direction, and the two groups of sensors are staggered on both sides of the longitudinal direction of the belt to form a detection of the curved surfaces on both sides of the curved cross-section of the belt, thereby realizing overall detection of the belt cross-section without blind spots.

[0007] The scheme is further as follows: the shell is placed below the conveyor belt through a bracket, the bracket includes a column, a cross arm is extended from the upper end of the column, hanging plates are fixed downwardly on both sides of the front end of the cross arm, an angle-adjustable platform is connected to the hanging plate, and the shell is fixed on the platform.

[0008] The solution is further as follows: at least two vertical slots are provided on the hanging plate, the platform is connected and fixed to the slots by bolts, and the inclination direction of the platform is adjusted by adjusting the bolts at the upper and lower fixed positions of the two slots, thereby achieving adjustment of the angle of the shell perspective window toward the bottom of the running belt.

[0009] A further solution is: the image collector is a binocular camera.

[0010] The beneficial effects of the utility model are as follows: by using a binocular 3D camera and a laser transmitter as detection sensors to obtain the surface image of the running belt, the detection of the belt can be intuitively realized by observing the image, and the overall detection of the belt cross section can be realized. The detection sensor is arranged in a closed shell with a visual window. Through the cleaning mechanism arranged on the shell, the problem of the industrial camera and laser in the prior art being blocked and unable to clean the obstruction, resulting in the inability to detect the belt status normally, is solved, the manual workload is reduced, the stability of the detection is improved, and false detection and missed detection are avoided.

[0011] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the housing mounting bracket of the utility model;

[0014] Figure 3 This is a schematic diagram of the distribution of the utility model on the conveyor belt line;

[0015] Figure 4 This is a schematic diagram of the structure of the utility model being arranged under the running belt of the conveyor;

[0016] Figure 5 The utility model is a schematic diagram of setting an inclination adjustment under the running belt of a conveyor. DETAILED DESCRIPTION

[0017] A device for detecting defects in conveyor belts, such as Figures 1 to 5As shown, the detection device includes at least one group of detection sensors 1, and the detection sensor 1 is arranged below the running belt 201 of the conveyor 2, wherein: the detection sensor 1 is an image collector and a laser emitter installed together, and the image collector and the laser emitter are fixed in a closed shell 3, and the detection sensor is arranged below the running belt 201 of the conveyor 2 through the shell, and the end face of the shell 3 facing the side below the running belt is a perspective window 301 end face with transparent glass 4, and the detection sensor 1 faces the belt 201 through the perspective window 301, and a dust removal mechanism 5 is arranged on the shell 3 to remove The dust mechanism 5 includes a cylinder 502 with a telescopic arm and a guide shaft 504 arranged through a bracket 501 on the side wall of the shell 3 at a right angle to the end face of the perspective window 301. The telescopic arm of the cylinder 502 is connected to a slider 503, and the slider 503 is sleeved on the guide shaft 504. A right-angle arm 505 is arranged on the slider 503. The telescopic arm drives the right-angle arm 505 to reciprocate along the guide shaft 504 through the slider 503. A brush 506 in contact with the transparent glass 4 is arranged on the right-angle arm 505. The reciprocating right-angle arm 505 drives the brush 506 to remove dust on the outer surface of the transparent glass 4. The transparent glass 4 uses tempered glass.

[0018] The conveyor belts used to transport ore and coal are usually supported as follows: Figure 4 The V-shaped support shown in the figure includes a middle horizontal support roller 202 and two side oblique support rollers 203. The cross section of the belt is arc-shaped when it is running. Therefore, only one set of detection sensors 1 is set under the belt, which often cannot observe the complete belt cross section as a whole, and there is a blind spot for observation. Therefore: Figure 3 , 4 and Figure 5 As shown, when the belt cross section supported by the conveyor frame structure is in a curved state, at least two groups of detection sensors 1 are arranged below the running belt 201 of the conveyor 2 along the front and back of the running direction of the belt 201. The two groups of sensors 1 are staggered on both sides of the longitudinal direction of the belt 201 to detect the curved surfaces on both sides of the curved cross section of the belt, thereby realizing the overall detection of the belt cross section without dead angles. In addition, for the convenience of installation, the housing 3 is placed below the running belt of the conveyor through a bracket 6 independent of the conveyor frame. The bracket includes a column 601, and a cross arm 602 is extended from the upper end of the column 601. Hanging plates 603 are connected and fixed downwardly on both sides of the front end of the cross arm 602. An adjustable angle platform 604 is connected to the hanging plate 603, and the housing 3 is fixed on the platform 604.

[0019] The adjustable angle is that at least two vertical slots 603-1 are provided on the hanging plate 603, and the platform 604 is connected and fixed to the slots 603-1 by bolts 605. The inclination direction of the platform 604 is adjusted by adjusting the bolts 605 at the upper and lower fixed positions of the two slots 603-1, thereby realizing the adjustment of the angle of the perspective window of the shell 3 toward the bottom of the running belt 201 to ensure the best visual angle.

[0020] In the embodiment: the image collector adopts a binocular camera (also called a 3D camera).

[0021] The working principle of this embodiment is: Figure 4 As shown, the bracket 6 with the housing 3 installed is placed on both sides of the belt in the longitudinal direction, and then the cross arm 602 is inserted between the upper belt and the return belt on the lower side of the upper belt 201, and then the installation angle of the platform 604 is adjusted so that the perspective window faces the belt 201. The angle between the perspective window and the belt 201 is adjusted as shown in FIG. Figure 5 As shown, the laser emitted by the laser transmitter irradiates the lower surface of the running belt through the perspective window 101, and the image acquisition angle 102 of the image collector collects the image of the lower surface of the running belt 201 in the laser irradiation area. The detection principle is to transmit the image to the controller, Figure 1 A communication interface 7 is provided on the side wall of the middle shell 3. The sensor signal is connected to the controller through the communication interface 7. The belt defects are detected through the image. The controller controls the timing to start the cylinder 502 with a telescopic arm to remove dust from the outer surface of the transparent glass 4. There are many ways to detect belt defects. One is to find out the belt tearing and perforation defects through the well-known image processing technology. The second is that the controller is connected to a display, and the controller projects the image onto the display. The belt tearing and perforation defects are found through manual observation. Through this device, it can also be observed whether the belt is deviating.

[0022] The above-mentioned detection device for conveyor belt defects solves the problem that the industrial camera and laser in the prior art are blocked and cannot clear the obstruction, resulting in the inability to detect the belt status normally, through the cleaning mechanism arranged on the shell, and reduces the manual workload, improves the stability of detection, and avoids false detection and missed detection.

Claims

1. A detection device for conveyor belt defects, comprising at least one set of detection sensors, the detection sensors being arranged below the conveyor belt, characterized in that: The detection sensor is an image collector and a laser emitter, which are fixed in a closed shell. The detection sensor is arranged below the running belt of the conveyor through the shell. The end face of the shell facing below the running belt is a perspective window end face with transparent glass. The detection sensor faces the belt through the perspective window. A dust removal mechanism is arranged on the shell. The dust removal mechanism includes a cylinder arranged on the side wall of the shell. The telescopic arm of the cylinder drives a right-angle arm to reciprocate along a guide shaft. A brush in contact with the transparent glass is arranged on the right-angle arm. The reciprocating right-angle arm drives the brush to remove dust on the outer surface of the transparent glass.

2. The detection device according to claim 1, characterized in that: When the conveyor frame structure supports the belt with a curved cross section, at least two groups of detection sensors are arranged below the conveyor belt along the belt's traveling direction. The two groups of sensors are staggered on both sides of the belt's longitudinal direction to detect the curved surfaces on both sides of the belt's curved cross section, thereby achieving overall detection of the belt's cross section without blind spots.

3. The detection device according to claim 1 or 2, characterized in that: The shell is placed below the conveyor belt through a bracket. The bracket includes a column, a cross arm is extended from the upper end of the column, hanging plates are fixed downwardly on both sides of the front end of the cross arm, and an angle-adjustable platform is connected to the hanging plate. The shell is fixed on the platform.

4. The detection device according to claim 3, characterized in that: At least two vertical slots are provided on the hanging plate, and the platform is connected and fixed to the slots by bolts. The inclination direction of the platform is adjusted by adjusting the bolts at the upper and lower fixed positions of the two slots, thereby realizing the adjustment of the angle of the shell perspective window toward the bottom of the running belt.

5. The detection device according to claim 1, characterized in that: The image collector is a binocular camera.

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