Hoisting device and control method suitable for four-point hoisting of precast tubular pile

Abstract

The invention discloses a hoisting device and control method suitable for four-point hoisting of a precast tubular pile. The hoisting device comprises a steel frame, lifting ropes, slings, a steel barand a control system. The four corners of the top of the steel frame are each connected with one end of the corresponding lifting rope, and two fixed pulleys are mounted in the middle of the steel frame at an interval. One sling is mounted on each fixed pulley, and the two ends of each sling are connected to the steel bar. One end of each sling is located on the inner side of the precast tubularpile. The steel bar is used for penetrating through a preformed hole of the precast tubular pile, the two ends of the steel bar are located on the outer side of the precast tubular pile, and the steelbar is arranged parallel to the steel frame. The control system comprises a console, wireless emitters, two strain sensors and a high-precision real-time tilt angle sensor, and the console is connected with the two strain sensors and the high-precision real-time tilt angle sensor through the wireless emitters. According to the hoisting device and control method, the problems that due to traditional two-point hoisting, the tubular pile is too large in local stress, a temporary hoisting facility is huge, and the tubular pile cannot be kept stable and vertical in the hoisting and assembling process can be solved.

Description

Technical field [0001] The invention relates to the field of hoisting construction, in particular to a hoisting device and a control method suitable for four-point hoisting of prefabricated pipe piles, and is particularly suitable for hoisting pipe piles of bridge pile-column integrated lower structures that require four-point hoisting. Background technique [0002] Due to the serious environmental pollution, labor-intensive construction site, long construction period, and large impact on traffic in traditional bridge construction, the prefabricated construction technology has emerged. Although the development of prefabricated bridges in my country began in the 1990s, with the guidance of national and local policies in recent years, the prefabricated construction technology has been strongly developed. However, as the application range of prefabricated technology in bridges has become larger and larger, it has gradually developed from partial prefabrication to full prefabrication...

AI Technical Summary

Problems solved by technology

[0003] In view of the above, it is necessary to provide a lifting device and control method suitable for four-point lifting of prefabricated pipe piles to solve the excessive local stress of pipe piles caused by traditional two-point The problem of piles not being able to remain stable and vertical

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