Lock catch device for rear anchor point of hanging basket

A lock catch device for a rear anchor point of a hanging basket comprises two wing-shaped lock catch mechanisms which are symmetrically arranged on the two sides of a gusset plate of the rear anchor point of the hanging basket respectively; each wing-shaped lock catch mechanism comprises a positioning plate, a shell bracket, a rotatable rectangular block, a pin shaft, a pulley and an inhaul cable; the positioning plate is welded to the side edge of the hanging basket rear anchor point gusset plate; the shell bracket is fixedly connected to the lower part of the positioning plate; the rotatable rectangular block is located in the shell support, a through hole is formed in the lower left portion of the rotatable rectangular block, the pin shaft penetrates through the shell support and the through hole of the rotatable rectangular block, the rotatable rectangular block is erected in the shell support, one end of the inhaul cable is fixedly connected with the upper portion of the rotatable rectangular block throu