摩擦提升机恒减速制动工况下的防滑特性

摩擦提升机是一种利用钢丝绳与卷筒之间的摩擦力来传动运动的矿井提升设备，其在紧急制动过程中容易出现钢丝绳打滑现象，严重威胁设备的安全运行。针对此问题，以恒减速紧急制动工况下的钢丝绳滑动为研究对象，提出利用加速度偏差对紧急制动过程中罐笼加速度进行归一化处理，以加速度偏差系数发生突变增大为钢丝绳发生临界打滑的判断依据，从而获得极限减速度。利用经过实验验证的摩擦提升机仿真模型和本研究所提出的方法获得了一系列恒减速制动工况下的极限减速度，经线性拟合后得到极限减速度预测模型，ax = -k1M + b1（下放工况）和ax=k2M+b2（提升工况），该预测模型将有助于恒减速制动工作点范围的确定，从而可为摩擦提升机防滑策略的制定提供依据。

Research on Anti-slip Characteristics of Friction Mine Hoist Under Emergency Braking Condition

Friction mine installation uses friction between steel wire rope and sheave wheel to convey load. Wire rope silppage often occurs during emergency braking phase, which has negative impact on the safe operation of the hoist. In this paper, the slip characteristics of steel wire rope under constant-deceleration-emergency-braking (CDEB) for short condition are investigated. A limit deceleration calculation method is proposed, in which an acceleration deviation is defined to normalize the longitudinal acceleration of the cage under CDEB condition, and the sudden increase of the acceleration deviation coefficent is used to determine whether the slip happens, as to obtain the limit deceleration. A series of limit deceleration values under CDEB condition are obtained by the combination of an experimentally validated simulation model and the proposed method in this paper. Then, the following limit deceleration prediction models are achieved by means of linear fitting, ax = -k1M + b1 (lowing stage) and ax = k2M + b2 (lifting stage). These prediction models will contribute to the determination of the range of constant deceleration braking point, thereby laying a foundation for the development of anti-skid strategy for friction mine installation.