The present invention discloses a lifting device and control method suitable for four-point lifting of prefabricated
pipe piles, wherein the lifting device comprises a
steel frame, a lifting
rope, a lifting cable, a steel rod and a
control system, one end of a lifting
rope is fixedly connected to each of the four corners of the top of the
steel frame, two fixed pulleys are installed at intervals in the middle of the
steel frame, a lifting cable is installed on each fixed
pulley, and the two ends of the lifting cable are respectively connected to the steel rod, one end of which is located on the inner side of the prefabricated
pipe pile, and the steel rod is used to penetrate the reserved hole of the prefabricated
pipe pile, and its two ends are located on the outer side of the prefabricated pipe
pile, and the steel rod is arranged parallel to the steel frame; the
control system comprises a control console, a
wireless transmitter, two strain sensors and a high-precision real-time inclination sensor, and the control console is connected to the two strain sensors and the high-precision real-time inclination sensor through the
wireless transmitter. The lifting device and control method of the present invention can solve the problems of excessive local stress of pipe piles caused by traditional two-point lifting, huge temporary lifting facilities, and the inability of pipe piles to remain stable and vertical during lifting and
assembly.