DETAIL
Home » News » FAQ » What are the main detection methods for belt conveyor faults at present?

What are the main detection methods for belt conveyor faults at present?

Views: 0     Author: Site Editor     Publish Time: 2022-09-27      Origin: Site

The methods used in the monitoring system of belt conveyor are not direct methods. Because it is difficult to select a direct method to detect the faults of the belt conveyor. At present, only indirect methods are available:


1. Speed detection of belt backup pulley

The belt conveyor operates correctly, the belt drives the backup pulley to rotate, and the speed of the backup pulley will change in case of overload, slipping, belt breakage and other faults. Therefore, the operation of the belt conveyor can be monitored and faults can be detected by detecting the speed of the backup pulley. However, this method has disadvantages:

a. When the belt conveyor is overloaded and slipping, the speed of the belt backup pulley will decrease. It is difficult to tell when the speed of the backup wheel is overloaded and when it is slipping.

b. Moreover, when the belt is scratched, it is difficult to detect the speed of the backup pulley alone.

This method is effective for detecting broken belt, disconnected coupling and overload. For longitudinal tear of the belt. It is difficult to detect the deviation. At present, the detection method for longitudinal tear and deviation is to select different sensors and adopt different detection methods.


2. Several methods for detecting longitudinal tear

a. The magnetic detector is set at equal distance in the longitudinal direction from the transverse direction of the belt to both sides, and the detection device that can send a certain signal induced by the change of magnetic field of the magnetic detector is installed. It is a detection method characterized by using a detection device to detect the magnetic field change of the magnetic detector, so as to measure the longitudinal tear of the belt.

Wire with high permeability shall be buried in the belt, such as permalloy, silicon steel, pure iron, etc. Magnetize it with a permanent magnet. The detection device detects the change of magnetic field and converts it into voltage signal. If longitudinal tearing occurs, the wire with high permeability will break, so the voltage signal is zero.

b. The longitudinal tear of the belt is detected by embedding the wire in the belt and detecting whether the wire is conductive.

c. Strap type longitudinal tear sensor. The tear detector keeps the trigger mechanism of the switch in normal state when the cable is in normal state. When the foreign matter pierces the belt surface and touches the cable, it drives the cable to make the cable produce displacement, causing the trigger mechanism to act and output the tear shutdown signal.


3. Belt deviation detection

The proximity switch is generally used to detect the belt deviation. The proximity switch belongs to a position sensor with switching value output. When the belt deviates, the proximity switch will act and send a signal. Proximity switches are capacitive, inductive, Hall, etc.

LATEST NEWS
MORE ABOUT OUR NEWS
What are the advantages of bottom dump trams/ Under what circumstances are bottom dump trams used in coal mine transportation?
26 September 2022

At present, there are many kinds of trams for ore transportation in domestic mines, and large and medium-sized mines tend to use bottom dump and bottom side dump trams for transportation. Compared with other types of tramcars, these two types of tramcars can realize continuous loading and unloading

no photo
Maintenance Method Of Single Hydraulic Prop!
31 August 2022

Good morning, young friends! Next, the small editor is ready to explain the relevant contents of the single hydraulic prop for the small friends. The small friends are also deeply impressed with the single hydraulic prop. I still hope that this explanation will bring some gains to my friends1. For n

bb758db2ef80afaa95e774f6ef7b884f.jpeg
Hydraulic Acrow Props Maintenance And Management
31 August 2022

In order to make the hydraulic acrow props work stable, give full play to the efficiency of the equipment, and extend the service life, in addition to strictly complying with the operating procedures, it is necessary to strengthen daily maintenance.Precautions for maintenance and management of singl

0433f934921bfb3e037856b7f5727d16.jpeg
Shandong China Coal Mining Support Equipment Co., Ltd. was founded in the 1990s with more than 1100 employees. It now has 53 professional companies, 3 Hong Kong companies, 1 British Cayman company and 1 American company. It is a large diversified industrial group integrating intelligent equipment manufacturing, e-commerce, software research and development and intelligent logistics, which is cultivated and supported by the Ministry of industry and information technology, the Ministry of Commerce, the development and Reform Commission, Shandong Province and Jining City.
CONTACT FORM
China Coal WeChat
 
Official WeChat
China Coal WhatsApp
 
Official WhatsApp
China Coal tiktok
 
Official Tiktok
Form Name
Copyright © 2022 Shandong China Coal Industry & Mining Group Co., Ltd. Sitemap

CONTACT US

Phone:+86-18660761303
Email:sales@chinacoalintl.com
Address:No.11, North of Kaiyuan Road, High-tech Zone, Jining City, Shandong Province, China