Vibration damping and vibration isolation ice resistant device for self-adapting change of tidal range

Abstract

The invention discloses a vibration decreasing-isolating ice-resisting device with automatic adaptation to tidal range changes, 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. A plurality of horizontal spring vibration isolators are connected between the inner surface of the ice-resisting cone and the outer surface of the cylinder-type part of the cylinder-type movable support; a plurality of vertical spring vibration isolators are connected between the lower part of the ice-resisting cone and the upper surface of a base part of the cylinder-type movable support. The device does not need to be operated manually, automatically adjusts the position of the ice-resisting cone along with tidal range changes, can keep the stability of the ice-resisting cone when ice sheets act on the ice-resisting cone, is especially suitable for the sea areas with large tidal range change range and high change speed, and reduces the adverse effect of ice-induced vibration phenomena on a platform to the utmost extent.

Description

technical field [0001] The invention relates to a protection device for pile legs of marine engineering structures in ice area sea areas, in particular to a vibration reduction, vibration isolation and anti-icing device adaptive to changes in tidal range. Background technique [0002] At present, the anti-icing devices of the existing marine engineering structures in the ice area are mostly cone-shaped bodies installed on the pile legs, and there are forward cones, inverted cones or combinations of forward and inverted cones. Some anti-icing cones 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, no matter it is a forward cone, an inverted cone or a combination of forward and inverted cones, it will generate ice-induced vibration under the action of t...

AI Technical Summary

Problems solved by technology

However, no matter it is a forward cone, an inverted cone or a combination of forward and inverted cones, it will generate ice-induced vibration under the action of the ice sheet, which seriously threatens the safety of the platform; and the climbing and accumulation of broken ice will also pose a threat to the pile; In sea areas with relatively large differences, it is necessary to artificially adjust the contact surface between the anti-icing cone and the ice sheet

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