Guiding mechanisms of truss pile leg lifting system

Abstract

The invention discloses guiding mechanisms of a truss pile leg lifting system and relates to the technical field of ocean engineering. The lifting system of a self-elevating platform comprises truss pile legs and lifting devices. Each truss pile leg comprises at least three vertically-arranged chord members. Racks are arranged on each chord member and in transmission connection with the corresponding lifting device. The lifting devices are fixed to the self-elevating platform through installing racks. The guiding mechanisms matched with the racks are arranged at the upper ends and the lower ends of the installing racks correspondingly. Each guiding mechanism is characterized in that a first rib plate is arranged vertically and is opposite to the rack face of the corresponding rack; the first rib plate is further provided with a base plate, an elastic clamp plate and a panel which are parallel to the first rib plate; the base plate is fixed to the first rib plate, the elastic clamp plate and the panel are tightly attached to the base plate in sequence, and the elastic clamp plate is located between the panel and the base plate; and the panel is opposite to the rack face of the corresponding rack. When the pile legs are under the effect of environmental load wind wave current, the elastic clamp plates in the guiding mechanisms are stressed and deform, the positions of the panels are changed accordingly, and the deformation of the pile legs is released.

Description

technical field [0001] The invention relates to the technical field of marine engineering, in particular to a guide mechanism of a truss leg lifting system. Background technique [0002] The self-elevating platform includes a hull and at least three legs, each leg runs through the hull respectively, and the legs cooperate with a lifting device arranged on the hull, and can be raised and lowered on the hull. For large water depth platforms, truss legs are usually used. During towing, the legs are raised and fixed on the hull. During operation, the legs are lowered and stood on the seabed to support the operation of the jack-up platform. This truss leg self-elevating platform usually adopts a rack and pinion lifting system, and the racks provided on each vertical chord of the truss legs cooperate with the lifting device to realize the lifting of the legs. [0003] In order to ensure the stability of the cooperation between the lifting device and the rack, guide mechanisms tha...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that when the truss legs of the self-elevating platform are in contact with the guide mechanism due to environmental effects, the deformation of the legs is relatively large and the extrusion load between the legs and the guide mechanism is too large, which may easily cause safety accidents. The example provides a guiding mechanism for a truss leg lifting system

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