矿井提升机天轮车槽装置的设计及其实验研究

矿井天轮在提升机系统中起到导向和支撑等重要作用，但在重载、高空、动载荷多变的工作环境下，由于换绳周期不同步、多绳受力不均等因素影响，其绳槽衬垫磨损后易对新绳造成二次伤害，危害新绳和天轮使用寿命。为此，建立并分析了偏心误差和定位误差数学模型，得到了进给误差与进给量、偏心误差、刀头至安装平台高度、原绳径尺寸和机床角度等参量的关系，确定了车削装置安装平面与天轮轴心距离为1 m，刀头距安装平面距离为0.6 m，倾角为60°的最优设计参数;采用基于伺服电机+滚珠丝杠副的两轴联动三维驱动方式设计了装置本体，基于整体式机架定位思想设计了悬挂式托架，将本体固定在天轮平台的下三角位置;静动态仿真分析表明，装置本体和托架的设计合理可行;实验研究表明，装置可较好的将规格为R 1700 mm的四绳槽天轮车削至绳径为1 648.05 mm、周长为10.355 m的状态，车削精度达到10-3，且绳径一致性较好，消除了磨损尖峰。

Design and experimental research of turning rope slot device of mine hoist pulley

Mine hoisting pulley has an important role of guidance and support in hoist system.However,under the work environment with overload,high altitude,dynamic load and changeable,there are some affecting factors,such as not synchronized in the rope cycle,and unequal line,which make the rope groove frayed,and cause secondary damage to new ropes,and endanger the service life of rope and pulley.Therefore,this paper establishes and analyzes the mathematical model with eccentric error and position error,and obtains the relationship between the error of feed and some parameters,such as feeding,the size of original rope,the eccentric error,the height of cutting tools to install platform,the original rope size and angle of machine tool.This paper determines the optimal design parameters with the distance from the turning device installation plane to the pulley axis is 1 m,the distance from cutting head to the installation plane is 0.6 m,and the angle is 60°.This paper uses two axes linkage and three-dimensional drive system to design the device ontology based on “servo motor+ball screw pair”,and uses the integral frame positioning to design the hanging bracket.The hanging bracket fixes the ontology on the lower triangular position of the head sheave platform.The static and dynamic simulation analysis show that the designs of device body and bracket are feasible.The experimental research shows that the device can better turn the rope pulley groove,and the radius of the rope after turning is 1648.05 mm,and the position of the circumference is 10.355 m,and the turning accuracy reaches 10-3.The ropes have good consistency,and eliminates the wear peak.