轨道自主运载平台轮轴机构校核分析

Checking Analysis of Wheel-axle Mechanism for AutonomousRail Carrying Platform

轨道自主运载平台通过搭载激光类与视觉类等不同类型传感设备可自主执行地铁隧道裂缝与变形、钢轨掉块、扣件丢失等巡检任务,由于可搭载传感器数量多,数据采集与处理数据量大,对运载平台的自身质量与载重能力提出了更高的要求。轮轴机构作为该型运载平台走行部的关键件,其可靠应用直接影响巡检作业安全性与设备使用稳定性。因此,针对轮轴机构最高扭矩传递可靠性、紧急制动工况下牵引电机固定件结构强度是否满足要求、车轴最大承载许用应力三种极限工况,分别进行了牵引电机输出轴与车轴法兰结合压力校核计算、牵引电机固定连杆极限工况强度校核计算和车轴最大承重受力分析校核计算,以确保轮轴机构的结构强度与使用可靠,支持轨道自主运载平台的安全应用。

The track autonomous carrying platform can independently perform inspection tasks such as cracks and deformation,rail drop,and fastener loss in subway tunnels by carrying different types of sensing equipment such as laser and vision.Due to the large number of sensors that can be carried,the amount of data acquisition and processing data is large,which puts forward higher requirements for the quality and load capacity of the carrying platform.As a key part of the running gear of the carrier platform,the reliable application of the axle mechanism directly affects the safety of the inspection operation and the stability of the equipment.Therefore,in view of the maximum torque transmission reliability of the axle mechanism,whether the structural strength of the fixed parts of the traction motor meets the requirements under the emergency braking condition,and the maximum allowable stress of the axle,the pressure check calculation of the output shaft of the traction motor and the flange of the axle,the strength check calculation of the fixed connecting rod of the traction motor under the limit condition and the maximum bearing force analysis and check calculation of the axle are carried out respectively to ensure the structural strength and reliability of the axle mechanism and support the safe application of the track autonomous carrying platform.