The invention discloses a
trunk-simulating mechanical arm
unit device and belongs to the technical field of robots. The
trunk-simulating mechanical arm
unit device comprises a base, a plurality of
artificial muscle assemblies, a plurality of middle parts, a plurality of springs, an end part and a flexible cover, wherein each
artificial muscle assembly comprises a driver, a transmission mechanism and a flexible screw rod
assembly. The
trunk-simulating mechanical arm
unit device has
multiple degrees of freedom, can bend, stretch out and draw back in multiple directions, can form various bending spatial shapes, enables a tool connected with the
tail end of the trunk-simulating mechanical arm unit device to reach any spatial position, is good in maneuverability, is good in flexibility, is high in safety in the interaction process with people, and meanwhile is light in self-weight, small in size, compact in structure and low in cost. The trunk-simulating mechanical arm unit device can be widely applied to various automatic systems needing mechanical arms.