Hoisting construction device for reinforcement cage of underground diaphragm wall of deep foundation pit

The invention discloses a deep foundation pit underground diaphragm wall reinforcement cage hoisting construction device, and relates to the technical field of underground engineering construction.The deep foundation pit underground diaphragm wall reinforcement cage hoisting construction device comprises a fixing frame and a fixing box, a first fixing mechanism is arranged in the fixing box, and the first fixing mechanism comprises a third fixing plate arranged in the fixing box; a third rotating shaft is rotatably connected to the exterior of the third fixing plate, a threaded rod is fixedly connected to the exterior of the third rotating shaft, a threaded sleeve is connected to the exterior of the threaded rod in a threaded mode, and a hanging head body is fixedly connected to the exterior of the threaded sleeve; a third rotating shaft can drive a threaded rod to rotate, finally, a threaded sleeve can drive a lifting head body to move upwards, the lifting head body is clamped into a fixing groove, the lifti