A hydraulic bolt lifting device

Abstract

A hydraulic bolt lifting device comprises a movable ring beam (2), a fixed ring beam (7) and a pile fixing frame (9), wherein the pile fixing frame (9) is connected with the upper end of the fixed ring beam (7) through connecting supports (8), the fixed ring beam (7) is connected with one end of each supporting rod (6) through a hinging shaft, the other end of each supporting rod (6) is hinged to a corresponding outer side telescopic end of a double-extend-out oil cylinder (4), the middle of the double-extend-out oil cylinder (4) is fixed to the movable ring beam (2) located under the double-extend-out oil cylinder (4) through an oil cylinder connecting plate (3), and the outer side telescopic ends of the double-extend-out oil cylinder (4) are respectively connected with the upper end of a sliding support (5). The hydraulic bolt lifting device is reasonable in structure, can ascend and descend through the successive coordinated motions of the movable ring beam and the fixed ring beam, the double-extend-out oil cylinder and a motion assembly of the double-extend-out oil cylinder are adopted, so that the hydraulic bolt lifting device operates stably and reliably, a platform will not incline and can be corrected itself even when inclination occurs, and the lifting efficiency is high.

Description

technical field [0001] The invention relates to a lifting device, in particular to a hydraulic bolt lifting device, which belongs to the technical field of offshore platform lifting equipment. Background technique [0002] With the gradual attention of marine development strategy, jack-up offshore platforms and other jack-up marine installation ships have been more and more widely used. The current hydraulic bolt lifting system is a widely used lifting type. Although the structure types are different, the lifting principle is similar. The lifting function is mainly realized through the cooperation of the vertical lifting cylinder and the horizontal bolt cylinder. Because the traditional hydraulic lifting device needs to operate multiple oil cylinders at the same time during the lifting operation, the lifting stroke of each oil cylinder may be different, resulting in out of synchronization of the oil cylinders, and it is prone to deflection during the lifting process, which w...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hydraulic lifting device for the existing offshore platform, which has simple structure, low lifting efficiency, and is prone to deflection during the lifting process, resulting in the situation of gnawing pile legs and affecting normal lifting. Reasonable structure, high lifting efficiency, stable and reliable operation during the lifting process, no deflection, and self-righting hydraulic bolt lifting device even when deflection occurs

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