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Reutov A. A. Modelirovanie statsionarnykh rezhimov raboty mnogoblochnykh privodov lentochnykh konveierov [The modeling of stationary operating modes of multiblock belt conveyor drives]. Sovremennye tekhnologii. Sistemnyi analiz. Modelirovanie [Modern Technologies. System Analysis. Modeling], 2019. Vol. 62, No. 2, pp. 40–47. DOI: 10.26731/1813-9108.2019.2(62).40–47

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A computer-generated multi-mass dynamic model of belt movement on conveyor drive pulleys has been developed. It allows analyzing stationary modes of operation of drives with unified and non-unified drive blocks, determining traction efforts and usable power of drive blocks, evaluating the slipping and wear of the belt on pulleys, taking into account the mechanical characteristics of the electric motor, belt and contact interaction. A method of analyzing the belt movement and the drive operation is described. The method includes the assessment of belt wear and the surface of the drive pulleys through the power of the sliding friction force of discrete belt bodies along the surface of the drive pulleys. Examples of the modeling of two-block and three-block drives with unregulated asynchronous electric motors and an automatic tensioning device are considered. The modeling of unified drive units showed that, with a small total resistance to the belt movement, the last drive pulley creates the greatest thrust force. When the movement resistance increases, the distribution of thrust between the drive pulleys changes, and the first drive pulley creates the greatest thrust force. The use of several unified drive units in the belt conveyor results in incomplete use of their installed capacity. The increase in the number of unified drive units does not lead to a significant increase in the total usable power and drive tractive force owing to the limited belt strength. The sliding speed of the belt on the drive pulleys increases with increasing resistance to the belt movement. The total power of the sliding friction force of the belt on three drive pulleys is less than   on two drive pulleys of unregulated drive blocks. Reducing the synchronous angular velocity of the asynchronous motor of the last drive unit reduces the slipping speed and belt wear on the drive pulleys.

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