Hoisting device suitable for four-point hoisting of prefabricated pipe pile

The lifting device comprises a steel frame, lifting ropes, slings, a steel bar and a control system, the four corners of the top of the steel frame are fixedly connected with one ends of the lifting ropes respectively, two fixed pulleys are installed in the middle of the steel frame at intervals, one sling is installed on each fixed pulley, and the two ends of each sling are connected to the steelbar respectively. Wherein one end of the steel bar is located on the inner side of the prefabricated pipe pile, the steel bar is used for penetrating through a preformed hole of the prefabricated pipe pile, and the two ends of the steel bar are located on the outer side of the prefabricated pipe pile; the control system comprises a console, a wireless transmitter, two strain sensors and a high-precision real-time inclination angle sensor. The console is connected with the two strain sensors and the high-precision real-time inclination angle sensor through the wireless transmitter. The liftingdevice can solve the prob