The process is just like rowing a boat. And then, the drivingarm return to the primary position by the pulling from the spring.
之后驱动臂通过弹簧拉动返回初始位置，此时驱动臂下面的小轮是滚动返回的，不产生相反的摩擦力。
2
The robot has link structures of whole active wheels with motor and transmission mechanism built in it, which includes six drivingarm links and a body frame.
机器人采用内置电动机及传动机构的全主动轮杆式结构，包括六只驱动臂杆和机架杆。
3
Arm pneumatic type driving, simple construction, trouble free.