针对传统脚踏泵辅助升弓所遇到的操作性难题，通过分析地铁车辆升弓用风的特性，设计了一种电动升弓装置，并在实际项目上进行了应用验证。%Aimed at the operational problem confronted by the traditional pedal - operated air pump when assists to rise pantograph , based on the analysis to characteristics of compressed air for metro vehicle’s pantograph - rising ,an electric pantograph - rising device was designed and applied on practical projects for validation .
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