Robotic arm

The utility model discloses a robotic arm, it includes: a arm components, the 2nd arm components, the 2nd arm components is connected through first pivot and a arm components with rotating, a first pivot perpendicular to arm components and the 2nd arm components's length direction, the 3rd arm components, the 3rd arm components pass through the second pivot and are connected with the 2nd arm components with rotating, and the second pivot is on a parallel with the 2nd arm components and the 3rd arm components's length direction, pivot seat, fourth arm components, pivot seat rotate and connect the 3rd arm components and fourth arm components, the wire drawing, at least one arm components fixed connection among a wire drawing and a arm components, the 2nd arm components, the 3rd arm components and the fourth arm components. This robotic arm can rotate for another arm components through the feasible arm components who is connected with the wire drawing of pulling wire drawing, and the drive arrangement of pulling