An analysis of tension difference of steel ropes during non-synchronous transition between two crossover zones in a super deep mine hoisting system

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (8) : 28-35.

ZHANG Xiao1,2,GONG Xiansheng1,2,NING Xianguo1,2,WAN Yuan1,2

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Abstract

This work aims to studying the difference of wire rope tension in a super deep mine hoisting system under crossover excitation.A double-rope multi-layer winding hoisting system was taken as the research object.With considering the impact of sheave and catenary ropes, the dynamic model of a double-rope hoisting system with variable length was established by using the Hamilton principle.The Galerkin method was used to discretize the derived partial differential equations of vibration.The equations of variable coefficient equations were numerically solved by using MATLAB programming.The influence of the center angle difference formed by the unsynchronized transitions of the two crossover zones of the same drum on the variation of tension difference between the two ropes was analyzed.The results show that the maximum value of the difference between the two ropes appears in the resonance region.The larger the difference between the center angles of the two ropes is, the larger the tension difference is.The larger the amplitude of the resonance at different speeds, the tension diffierence of the same center Angle difference larger.To ensure that the difference between the two ropes does not exceed 10% of the initial average tension, the maximum value of the transition center angle between the two ropes must not exceed 0.02 rad.

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double-rope hoisting system / transition center angle difference / tension difference / wsire rope vibration

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ZHANG Xiao1,2,GONG Xiansheng1,2,NING Xianguo1,2,WAN Yuan1,2. An analysis of tension difference of steel ropes during non-synchronous transition between two crossover zones in a super deep mine hoisting system[J]. Journal of Vibration and Shock, 2019, 38(8): 28-35

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