The utility model relates to the field of
steel frame hoisting, and discloses a large
steel frame structure hoisting device which comprises a base, a vertical
steel frame is fixedly connected to the top of the base, a
transverse beam is slidably connected to the outer wall of the vertical steel frame, a sliding rail is fixedly connected to the top of the base, and a motor is fixedly connected to the top of the sliding rail. An output shaft of the motor penetrates through the top of the sliding rail and is fixedly connected with a
threaded rod, and the outer wall of the
threaded rod is in threaded connection with a sliding block. A supporting mechanism is arranged on the transverse
moving frame, and when the transverse
moving frame moves towards the ground, the supporting mechanism automatically stretches out and opens the
pulley support outwards, and an auxiliary supporting effect is provided for the transverse
moving frame. Through the arrangement of the motor, the
threaded rod, the sliding block and other structures, when the hoisting
machine needs to be maintained, the motor can drive the threaded rod to rotate and drive the hoisting
machine to fall to the position near the ground, and workers are prevented from climbing to the high position for overhauling.