动车组轴箱弹簧防雪罩热缩机的研制

Development of Thermal Shrinkage Machine for Spring Snow Shield of EMU Axle Box

轴箱弹簧防雪罩的组装对低温环境下动车组轴箱弹簧的可靠性影响较大,随着高级修动车组数量的不断增加和维修时间的不断减少,对轴箱弹簧防雪罩的安装工具提出了更高的要求。为提高动车组轴箱弹簧防雪罩热缩作业效率,减少作业危害,文章提出了一种轴箱弹簧防雪套热缩机的制作方案,从热循环系统,驱动系统和控制系统三大模块进行了研究、设计并进行验证。该设备可实现温控自动热缩作业,具有作业效率高,热缩质量高,废气排放少等优点,为动车组高级修修时优化提供了保障,具有良好的使用价值和推广前景。

The assembly of axle box spring snow shield has a great influence on the reliability of axle box spring in low temperature environment. With the increasing number and the decreasing maintenance time of advanced repair EMU, higher requirements are put forward for the installation tools for axle box spring snow shield. In order to improve the thermal shrinkage operation efficiency of the axle box spring snow shield of the EMU and reduce the operation hazards, in the paper a manufacturing scheme is presented for thermal shrinkage machine with box spring snow shield and the thermal cycle system, driving system and control system of the machine are studied, designed and validated. The equipment can realize automatic thermal shrinkage operation of temperature control and is characterized by high operation efficiency, high thermal shrinkage quality and less exhaust gas emissions, which provides guarantee for the optimization of EMU]s advanced repair time and has good application value and popularization prospects.