操作简单，行走时重心波动很小，对楼梯的形状、尺寸适应性强。可以实现平地与爬楼之间不同工况的转换。
特点：
1、系统采用人力驱动，利用原理使上楼过程简单省力。
2、简化操作，可以同时实现履带的起落、后部小轮的收缩、离合器的控制。
3、模仿变速自行车的机构，采用传动链条张紧轮结构，并合理布置在上楼时的松边。
The operation is simple, walk center of gravity wave is small, the shape, size of stair adaptability. Can realize the ground and climb building under different conditions between the conversion.
Features:
1, the system USES human drive, using the principle that upstairs process simple effort.
2, simplified operation, could realize track the ups and downs in the rear wheel, small shrinkage, clutch control.
3, imitate ten-speed bicycle institutions, the drive chain tension wheel structure and reasonable layout in the upstairs of loose edge.
