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Device and method for detecting longitudinal tearing of large conveyor belt

A conveyor belt, longitudinal tearing technology, applied in the conveyor control device, conveyor, conveyor objects and other directions, can solve the problems of foreign body wear, longitudinal belt tearing, belt damage, etc., to facilitate maintenance and improve production efficiency. Effect

Active Publication Date: 2019-02-15
河北省机电一体化中试基地有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Belts are expensive, and large-scale conveyor belts are even more expensive. During the transportation of different materials, foreign objects are particularly prone to wear and tear, and longitudinal tearing of the belt often occurs. Once the belt is torn, if it is not found in time, the entire belt will be damaged. It may even cause the entire industrial line to break, reduce the production efficiency of the enterprise, and cause major economic losses.
[0003] With the continuous improvement of the domestic scientific research level and technology, some protection devices and equipment for the longitudinal tear detection of belt conveyor belts have been manufactured, such as electromagnetic induction detectors, tear pressure detectors, material leakage detectors, and ultrasonic sensors. etc., but the practical effect and detection accuracy are mediocre, there are great safety hazards, and it is impossible to meet the requirements of industrial-grade belt longitudinal tear detection

Method used

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  • Device and method for detecting longitudinal tearing of large conveyor belt
  • Device and method for detecting longitudinal tearing of large conveyor belt
  • Device and method for detecting longitudinal tearing of large conveyor belt

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1, a device for detecting longitudinal tearing of large conveyor belts.

[0034] Such as figure 1 As shown, the device for detecting longitudinal tearing of large conveyor belts provided by the present invention includes an industrial camera 1, a line laser emitter 2, a brush 3, a dust removal air gun 4, a synchronous detection wheel 5, and a PC.

[0035] The industrial camera 1 is installed under the non-bearing surface of the conveyor belt, and the field of view of the camera covers the entire transverse span of the conveyor belt, and is used to collect images of the conveyor belt to be tested.

[0036] The line laser emitter 2 is installed under the non-bearing surface of the conveyor belt, and the line laser irradiated on the conveyor belt is in the field of view of the industrial camera, providing a reference line for tear detection.

[0037] Hairbrush 3 is installed on the upstream of the industrial camera along the direction of movement of the non-car...

Embodiment 2

[0039] Embodiment 2, a method for detecting longitudinal tearing of large conveyor belts.

[0040] Such as figure 2 As shown, the method for detecting longitudinal tearing of large conveyor belts provided by the present invention includes the following steps:

[0041] S1. Obtain the longitudinal tear length by using an image processing algorithm combined with the speed of the conveying belt.

[0042] ① Use the Retinex algorithm to enhance the collected image of the non-bearing surface of the conveyor belt containing the laser line;

[0043] The advantage of the Retinex algorithm is that it can maintain the high fidelity of the image and compress the dynamic range of the image at the same time, and can also achieve color enhancement, color constancy, local dynamic range compression, and global dynamic range compression. Calculated as follows:

[0044]

[0045] In the formula, I i (x,y) is the i-th pixel of the original input image, F(x,y) is a Gaussian function, N is th...

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Abstract

Theinvention provides a device and method for detecting longitudinal tearing of a large conveyor belt. The device comprises an industrial camera, a line laser transmitter, a brush, a dust removal airgun, a synchronous detection wheel and a PC machine; the industrial camera is installed below the non-carrying surface of the conveyor belt; the line laser transmitter is installed below the non-carrying surface of the conveyor belt and emitted line laser is in a view field of the industrial camera; the brush is installed on the upstream of the industrial camera in the movement direction of the conveyor belt and used for cleaning the conveyor belt; the dust removal air gun is installed close to the industrial camera to prevent dust from falling and contaminating a lens; the synchronous detection wheel is used as a passive wheel to be in contact with the conveyor belt, installed below the conveyor belt, rotates with movement of the conveyor belt, and is used for detecting the moving speed of the conveyor belt; and the PC machine processes collected images, generates a tearing alarm, and displays length, width, depth and position information of longitudinal tearing of the large conveyorbelt, so as to complete detection of longitudinal tearing of the large conveyor belt.

Description

technical field [0001] The invention relates to the technical field of large conveyor belt operations, in particular to a device and method for detecting longitudinal tearing of large conveyor belts. Background technique [0002] Large conveyor belt conveyors are the main equipment for material transportation in mines, ports and other enterprises. Belts are expensive, and large-scale conveyor belts are even more expensive. During the transportation of different materials, foreign objects are particularly prone to wear and tear, and longitudinal tearing of the belt often occurs. Once the belt is torn, if it is not found in time, the entire belt will be damaged. It may even cause the entire industrial line to break, reduce the production efficiency of the enterprise, and cause significant economic losses. [0003] With the continuous improvement of the domestic scientific research level and technology, some protection devices and equipment for the longitudinal tear detection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G43/06
CPCB65G43/06B65G2203/0275B65G2203/041
Inventor 靳晔赵东哲李欣邓菲庞增拴叶蓉王勇秦亚敏贾英新张雷张震高林鹤刘申张金辉
Owner 河北省机电一体化中试基地有限公司
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