Mechanical arm end effector for butt joint of space truss joints

The invention relates to the field of engineering machinery, in particular to a mechanical arm end effector for butt joint of space truss joints, which comprises a nut locking mechanism, two bufferable push rod type mechanical clamping jaws, a truss clamping mechanism and a translation mechanism, the truss clamping mechanism comprises a clamping jaw frame and bufferable push rod type mechanical clamping jaws, the truss clamping mechanism is installed on a lead screw fixing base of the translation mechanism, the truss clamping mechanism can clamp and fix a truss round rod and make preparations for follow-up nut locking work, and the nut locking mechanism is installed on the buffering push rod type mechanical clamping jaw and can drive a truss joint nut to rotate and lock. The buffering push rod type mechanical clamping jaw is installed on a translation sliding block of the translation mechanism, and the translation mechanism can drive the push rod type mechanical clamping jaw to do translation motion in the ax