Auto spiral lifting active ice resistant device

Abstract

The invention discloses an automatic spiral elevating active ice-resisting device, comprising a fixed support which is arranged around and fixed with the outside of a leg of a protected object, a hydraulic self-elevating system fixed with the fixed support, a cylinder-type movable support which is fixed with a plunger of the hydraulic self-elevating system and is arranged around the outside of the leg of the protected object, and an ice-resisting cone which is arranged around and connected with the outside of the cylinder-type movable support. The ice-resisting cone is a combined body of a positive cone and an inverted cone; the inner surface of the combined of the positive cone and the inverted cone is in threaded connection with the outer surface of the cylinder-type part of the cylinder-type movable support; a propeller is arranged on the lower end face of the combined of the positive cone and the inverted cone. The device can automatically adapt to tidal range changes, can realize the functions of breaking ice actively, operating fully automatically, reducing the threat to a platform from the accumulation and climbing phenomena of ice sheets, is especially suitable for the sea areas under serious ice conditions, and can effectively protect ocean engineering structures in iced sea areas.

Description

technical field [0001] The invention relates to the protection of pile legs of marine engineering structures in sea areas in ice regions, in particular to an active anti-icing device with automatic spiral lifting. Background technique [0002] At present, the anti-icing devices of marine engineering structures in ice areas are mostly cone-shaped bodies installed on pile legs, and there are forward cones, inverted cones or combinations of forward and inverted cones. Some anti-icing front and back cone assemblies are fixed on the pile legs, and some can be lifted and lowered along the pile by the lifting system. Through the action of the surface of the cone, the ice sheet is transformed from crushing damage to bending damage, achieving the effect of breaking and crushing ice. However, for sea areas with severe ice conditions, the existing ice-breaking devices cannot achieve the desired ice-breaking effect due to the thicker ice layer and faster ice speed; and the climbing and...

AI Technical Summary

Problems solved by technology

However, for sea areas with severe ice conditions, the existing ice-breaking devices cannot achieve the desired ice-breaking effect due to the thicker ice layer and faster ice speed; and the climbing and accumulation of broken ice will also pose a threat to the pile; In sea areas with relatively large tidal range changes, it is necessary to artificially adjust the contact surface between the anti-icing forward and backward cone assembly and the ice sheet

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