Power transmission line electric energy collecting device

A power transmission line electric energy collection device belongs to the power supply field. The invention aims to solve the problems of limited application and limited energy taking power of the existing energy taking mode. One end of the fixing rod is vertically fixed on the lower plate, the connecting body is fixed at the other end of the fixing rod, a plurality of clamped beams which are distributed in a radial shape are arranged on the connecting body, and a piezoelectric ceramic piece is pasted on the upper surface and/or the lower surface of each clamped beam; a first semicircular groove is formed in the outer wall of the back plate in the length direction of the back plate, the portions, on the two sides of the first semicircular groove, of the back plate are each provided with a stepped groove, a second semicircular groove is formed in the connecting block in the length direction of the connecting block, the portions, on the two sides of the second semicircular groove, of the end face of the connec