Substantiation of Indirect Control of Flat Rubber-Tire Traction Body’s Cable Breaks
摘要
The models of a rubber-tire traction body as a mechanical system and a system of electrical conductors forming a network with discrete and distributed parameters are developed. The structural correspondence between the models of the traction body as a mechanical system and a system of current conductors is proved, which is the basis for the possibility of monitoring the state of the rubber-tire traction body by changes in its electrical resistance in the event of a cable break. The influence of local damage to the cables on the distribution of stresses and the value of the resistance of the rubber-tire traction body is investigated. The dependence of the resistance on the parameters, physical properties, design of the rubber-tire traction body, the scheme of stress supply to the cables, and the presence and location of the latter’s breaks were established. A set of methods was used to study the electrical resistance of a rubber-tire traction body. Local damage to the cables affects the stress distribution and the resistance value of the rubber-tire traction body. The dependence of the resistance on the parameters, physical properties, design of the traction body, the scheme of stress supply to the cables, as well as the presence and location of cable breaks is investigated. The requirements for a system to prevent the destruction of a rubber-tube traction device have been formulated. The influence of the geometric parameters of the cables (diameter, number of wires) on the total resistance of the traction body is analyzed. The influence of temperature on the electrical resistance of a rubber-tube traction body and its mechanical properties is considered. A methodology for determining the degree of damage to cables based on the measurement of electrical resistance is proposed. The rubber material’s influence on the traction body’s electrical characteristics is investigated. The study’s results can be useful for improving the reliability and safety of the operation of rubber-tube traction units.