组合式地铁轨道电动小车轻量化设计与研究
Lightweight Design and Research of Combined Metro Track Electric Trolley

针对地铁维检过程中需要对少量人员和小型设备进行转运的问题，在现有一体式轨道电动小车的基础上进行了轻量化设计和研究。采用组合式结构设计替代原有的一体式结构，优化各模块间的组装方式，通过人力可短距离搬运，极大地提高了作业区域的可及性；采用差动驱动方式替换传统的定轴驱动方式，提高轨道小车对地铁线路的适应能力；利用有限元软件对其主体结构进行静态强度计算和分析，在不降低结构强度的情况下，减轻了整体和单个模块的重量、简化了拆装工艺流程。通过对轨道小车的轻量化设计和研究，形成了一套适用于地铁维检作业的组合式轨道电动小车装载平台，具有分模块携带、快速现场组装、操作便捷可靠、运行稳定、快速现场分解、短时间撤线等特点，为地铁维检作业提供了一个通用型的便携式小型移动平台。
Aiming at the problem that a small number of personnel and small equipment need to be transferred during the maintenance and inspection of metro, the lightweight design and research are carried out on the basis of the existing integrated track electric trolley. The combined structure design is adopted to optimize the assembly mode between modules, which can be lifted in a short distance by manpower, greatly improving the accessibility of the operation area; The traditional fixed axle drive mode is replaced by the differential drive mode to improve the adaptability of the rail car to the subway line; The static strength of the main structure is calculated and analyzed by using the finite element software. Without reducing the structural strength, the weight of the whole and single module is reduced, and the disassembly process is simplified. Through the lightweight design and research of the track trolley, a set of combined track electric trolley loading platform suitable for metro maintenance and inspection is formed. It has the characteristics of sub module carrying, rapid on-site assembly, convenient and reliable operation, stable operation, rapid on-site decomposition, short-time line withdrawal, etc., and provides a universal portable small mobile platform for metro maintenance and inspection.