Cm-4.5 Ⅱ lithium battery vertical axis turnout grinder is developed on the basis of the original ncm-5 Ⅱ multifunctional vertical axis turnout grinder technology of our company. The machine retains the original model and can be used not only for turnout maintenance, but also for the grinding of rail head surface, rail repair weld and joint weld of ordinary rail. It has the technical characteristics of high work efficiency, simple operation, fast up and down track, wide application range and so on. The supporting power is improved from gasoline engine to DC brushless motor, which eliminates the impact of vibration, noise and gas emission on the working environment during gasoline engine driving operation. It is more conducive to the healthy, relaxed and efficient completion of construction operations by construction personnel