Power transmission mechanism of hydro-viscous soft start device for belt conveyor

LI Bin-bin
(Taiyuan Research Institute Co.,Ltd., CCTEG, Taiyuan 030006, China)

Abstract: Aiming at the characteristics of large inertia, large load and severe starting shock of the minebelt conveyor,during the working process of horizontal transportation and inclined transportation of coal mines, the soft start technology was investigated in detail. The hydro-viscous soft starter was selected to analyze its structure and transmission mechanism. According to the ideal starting curve, the numerical simulation and simulation analysis method were used to analyze the dynamic change characteristics of the oil film in the speed regulation process of the hydro-viscous soft starter. The bearing capacity and torque variation during the process were obtained by using numerical calculation. The results indicate that during the speed regulation process, the starting time of the oil film thickness increases gradually. During the starting process, the torque and oil film bearing capacity increase first and then decrease with the increase of the starting time. When the starting time is 16 s, the maximum value is reached respectively. The hydro-viscous soft start device meets the requirements of speed and starting time during the starting process, which provides a theoretical reference for the design and application of the hydro-viscous soft starter.
Key words: mine belt conveyor; soft start; starting curve; numerical calculation; oil film dynamic characteristics