Conveyor belt longitudinal-tearing online monitoring early warning device

A monitoring and early warning, longitudinal tearing technology, applied in the conveyor control device, conveyor objects, transportation and packaging, etc., can solve the problems of poor reliability and poor real-time performance.

Inactive Publication Date: 2012-02-22
TAIYUAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is an on-line monitoring and early warning device for longitudinal tearing of conveyor belts. Combined online monitoring and early warning device for longitudinal tearing of conveyor belt

Method used

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  • Conveyor belt longitudinal-tearing online monitoring early warning device
  • Conveyor belt longitudinal-tearing online monitoring early warning device
  • Conveyor belt longitudinal-tearing online monitoring early warning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0037] Embodiment 1: When the width of the belt conveyor belt is 2m and the conveyor belt speed is lower than 5m / s, the working process of the above-mentioned online monitoring and early warning device for longitudinal tear of the conveyor belt is: MV-VS200FM / installed under the conveyor belt C The 1394 signal output by the CCD infrared camera 1 is converted by the VS-IE2001394 signal to optical fiber module 14 and then transmitted to the VS-IE200 optical fiber to 1394 signal module 15 in the central control room via optical fiber, and then the 1394 signal is transmitted through the MV-1394 image capture card 17 To the upper computer 18, the image processing software system of the upper computer 18 compares the processed image features to realize the identification of the surface crack and tear image of the conveyor belt and calculate the crack length. When the crack length reaches the set first threshold, the upper computer 18 It communicates with the programmable logic contro...

Embodiment approach 2

[0056] Embodiment 2: When the width of the belt conveyor belt is less than 1m and the conveyor belt speed is lower than 3m / s, the main technical indicators of the device are:

[0057] Power supply: Inoue: ~220V±10%50HZ

[0058] Downhole: ~127V±10%50HZ

[0059] Signal transmission distance: PLC and host computer communication optical fiber transmission: 40Km

[0060] Infrared CCD camera output signal fiber transmission: 1Km

[0061] Working temperature: 30℃

[0062] Detection accuracy rate: 98%

[0063] Image detection resolution: 1.5mm

[0064] Imaging frame rate: 30 frames / s

[0065] Conveyor belt width: 0.9m

[0066] Check the running speed of the conveyor belt: 2m / s.

[0067] Explosion-proof standard: GB3836.2-2000GB3836.4-2000

[0068] The sealed cabin 4 of the compensation device used to provide a stable light and dark environment for the detection device is formed by connecting a funnel body welded by steel plates and a rectangular cylinder body: a funnel body welded by four 6mm thick st...

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PUM

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Abstract

The invention relates to a conveyor belt longitudinal-tearing online monitoring early warning device, which belongs to the online monitoring technical field of conveyor belts in coal mine enterprises. A charge coupled device (CCD) infrared camera is installed below the conveyor belt to collect a picture of the conveyor belt, the picture is collected by a picture collection card to a host computerwith picture processing software, characteristics of processed pictures are compared through the software, the picture of cracks and tearing on the surface of the conveyor belt is recognized, the length of the crack is calculated, the host computer is communicated with a programmable logic controller (PLC) to issue an alarm or to carry out stop operation according to a set threshold value of the length of the crack, and a distance from a malfunction point to a monitoring point is detected and calculated through a speed sensor. In order to resist the interference, a sealing cabin is used for sealing a device detection area, and a cold light source is used for the light filling. Due to the adoption of the early warning device, the possible tearing accident of the conveyor belt can be accurately detected in time. The conveyor belt longitudinal-tearing online monitoring early warning device has the advantages that: cost is low, reliability is high, practicability is strong, effective sound-light alarm can be executed to reduce the tear of the conveyor belt when the tearing degree is smaller, and emergency stop also can be realized when a sudden larger degree tear of the conveyor belt is detected.

Description

Technical field [0001] The present invention is an online monitoring and early warning device for longitudinal tearing of a conveyor belt, which uses a combination of CCD infrared camera image detection technology and a programmable logic controller (PLC), and belongs to the technical field of coal mine enterprise conveyor belt online detection. Background technique [0002] In the production process of coal mine enterprises, the longitudinal tear of the conveyor belt is one of the three major disasters of belt conveyors. Because the length of the steel core conveyor belt is relatively long, if the longitudinal tear cannot be found in time, it may cause the whole The conveyor belt was scrapped and the loss was serious. At present, there are many methods for detecting longitudinal tearing of conveyor belts at home and abroad, including conveyor abnormal current detection method, conductive body embedded belt detection method, idler force abnormal detection method, and wireless emi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G43/02B65G43/06
Inventor 乔铁柱唐艳同闫来清牛犇胡明明
Owner TAIYUAN UNIV OF TECH
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