Lower limb exoskeleton for energy collection

The invention discloses a lower limb exoskeleton for energy collection. The lower limb exoskeleton comprises a generator, a speed increaser, a clutch, a thigh rod piece and a shank rod piece. A conductive friction ring is arranged at the end, close to the knee, of the thigh rod piece, a conductive friction plate is arranged at the end, close to the knee, of the shank rod piece, and when the thigh rod piece moves to a specific position relative to the shank rod piece, the conductive friction ring and the conductive friction plate are connected; the clutch is used for enabling the shank rod piece not to move relative to the output shaft of the speed increaser after the conductive friction ring and the conductive friction plate are combined, at the moment, the thigh and the shank of a person move relatively, the generator is driven by the speed increaser to move, and electric energy is generated; and the clutch is further used for enabling the generator to stop generating electricity after the conductive frictio