The value of frictional force of soil to pile body and resistance to pile toe has a close relation with the penetration depth and relative rigidity of soil layer at pile body and pile toe.

The robot has high rigidity, high accuracy, and low mobile mass relative to an equivalent serial robot. It is suitable to be used for rapid palletizing and transfer operating.

Strength and rigidity of metal structure of the loading bridge are directly relative to the working properties and service life of the whole machine.