Authors: A.V. Grigoryev, A.Y. Zakharov, A.G. Zakharova, N.M. Shauleva, A.A. Shaulev

Title of the article: Justification of design of impulses transmitter and receiver of longitudinal breakage detection device of a conveyor belt

Year: 2024, Issue: 2, Pages: 4-23

Branch of knowledge: 2.8.8 Mining machines, geotechnology (engineering)

Index UDK: 622.271.4:622.684

DOI: 10.26730/2618-7434-2024-2-4-23

Abstract: In conditions of modern mines belt conveyors are widely used, the peculiarity of operation of which is a significant increase in cargo flows and replacement of vertical hoisting installations on inclined shafts, and the width of the conveyor belt can reach 2000 mm. Longitudinal breakage of such a belt causes significant economic costs associated with the repair or replacement of the conveyor belt and downtime of the main mine equipment. The most promising direction of solving the problem of longitudinal break detection can be considered as energy transfer in the form of electromagnetic fields along the cross-section of the conveyor belt. However, due to the large number of interferences in the built-in loop in the conveyor belt in the conditions of the mine, there may be difficulties in reading the information receiver. In addition, in such devices it is necessary to shield the transmitter from the receiver. In order to increase the reliability of longitudinal break detection devices of conveyor belts (LBDD) at the departments of mining machines and complexes and electric drive and automation of the Kuzbass State Technical University named after T.F. Gorbachev (KuzSTU) developed a device in which the transmitter and power source are located in the conveyor belt. Several variants of structural schemes of the LBDD with minimal influence of electromagnetic interference are proposed and requirements to the transmitter and receiver are defined. The criteria to be satisfied by the transmitter design of the longitudinal tape tear detection device with minimal influence of electromagnetic interference are formulated. The choice of transmitter and receiver parameters is substantiated, calculations of transmission losses, minimum possible transmitter power and minimum possible receiver sensitivity are made, the type of transmitter and receiver antennas is chosen, the transmitter circuit based on the Kolpitz oscillator is selected and calculated.

Key words: belt conveyors conveyor belts longitudinal breakage longitudinal breakage detection device reed switch impulse transmitter impulse receiver

Receiving date: 25.02.2024

Approval date: 30.05.2024

Publication date: 29.08.2024

CITE DOWNLOAD