超深矿井多点多层缠绕提升系统缠绳区研究
首发时间:2018-12-25
摘要:针对用于矿产资源深部开采的超深矿井提升设备,为保证多绳缠绕多点提升钢丝绳间的同步性,从超深矿井提升设备缠绳区挠曲线变形角度,探讨钢丝绳间变形失谐的成因。考虑由于超深井垂绳自重的影响,分析缠绳区表面载荷的变化形式,建立了三层钢丝绳分别缠绕到缠绳区处的挠曲线变形公式,并分析了卷筒缠绳区变形对钢丝绳长度差的影响。结果表明,在超深矿井多层缠绕提升系统中,卷筒缠绳区的载荷由于垂绳重量随提升高度变化而变化,其由于渐变载荷的作用而产生的挠曲线变形呈现中间大两头小的趋势,在提升系统三层缠绕的过程中缠绳区最大点的挠度范围在1.5~3mm之间。在缠绳区变形的基础上,钢丝绳圈间不平衡量、缠绕间隙、出绳方式对钢丝绳的长度差都有影响,并且随着钢丝绳在缠绳区处的移动而发生变化。
关键词: 机械设计及理论 超深矿井 缠绳区变形 数值分析 钢丝绳变形
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Study of Multi-point Multi-layer Winding Lifting System in Ultra-deep Mine
Abstract:For ultra deep mine hoisting equipment for deep mining of mineral resources,to ensure the synchronization between multi-rope winding multi-lift ropes, from the deflection curve of the twisted rope zone in the lifting equipment of ultra-deep mine to discuss the causes of the detuning of the deformation between wire ropes. Considering the effect of hoisting the rope\'s own weight due to ultra-deep wells, analyzing the variation of surface load in the rope area, using the principle of beam deformation to establish the deflection curve formula of the three-layer wire rope wound to the wrapped rope area and analysis the influence of deformation of reeling rope on the length difference of steel wire rope The results show that in the ultra deep mine multi-layer winding lifting system, the load of the winding area of the reel presents a gradual change due to the attenuation of the weight of the rope,the deformation of the deflection curve due to the effect of the gradient load shows a big change in the middle and two ends and the deflection of the largest point of the wraparound zone in the process of three-layer winding in the ultra-deep mine is between 1.5~3mm. Based on the deformation of the rope area, the unbalance between wire rope loops, Winding gap, and the way of rope output have effects on the length difference of the wire rope, and changed as the wire rope moves around the rope area
Keywords: Mechanical design and theory Ultra deep mine Wrapped area deformation Numerical Analysis Wire rope deformation
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