High-strength composite elastic energy-absorption anti-collision device and production method thereof

Abstract

The invention relate to a high-strength composite elastic energy-absorption anti-collision device and a production method thereof. The anti-collision device comprises a steel tube, a macromolecular close-cell type foam material core, a high-strength fiber material layer, a composite fiber strengthening layer and an SPUA casting coating, which are arranged from inside to outside in sequence, wherein the axial peripheral surface of the steel tube is coated with the macromolecular close-cell type foam material core; and the axial peripheral surface of the macromolecular close-cell type foam material core is coated with the high-strength fiber material layer. The production method comprises the following steps: manufacturing a macromolecular close-cell foam material through a mould, and placing the steel tube in the macromolecular close-cell foam material as a strengthening structure, with an overall size meeting an actual requirement; performing mould-free 3D casting with a rotary casting machine, including casting bottom-layer high-strength fiber with a 3D flat nozzle; performing mould-free 3D casting with the rotary casting machine, including casting the composite fiber strengthening layer with a round nozzle; and finally, manually casting the SPUA surface coating, and forming the SPUA surface coating through natural-temperature curing. The high-strength composite elastic energy-absorption anti-collision device has the advantages of large compressive deformation, small counter force, high energy-absorption capacity, excellent anti-corrosion and anti-aging properties, self-floating property, easiness in mounting, no maintenance, long service life and the like.

Description

technical field [0001] The invention relates to an anti-collision device, in particular to a high-strength composite elastic energy-absorbing anti-collision device and a production method thereof. Background technique [0002] With the rapid development of social economy and technology, long-span bridges in rivers, lakes and seas are gradually increasing; the tonnage, number and speed of ships are also increasing rapidly, and incidents of ships colliding with piers often occur, which poses a great threat to the safety of bridges. Threat; At present, rubber and fiberglass are the main materials of anti-collision facilities, which have the following limitations and defects: (1) FRP anti-collision facilities: FRP anti-collision facilities are brittle and rigid. When receiving an impact, within the bearing range of this material, the maximum deformation and reaction force appear, but due to the poor ability of this material to recover deformation, the hull is destroyed at the sa...

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Problems solved by technology

[0002] With the rapid development of social economy and technology, long-span bridges in rivers, lakes and seas are gradually increasing; the tonnage, number and speed of ships are also increasing rapidly, and incidents of ships colliding with piers often occur, which poses a great threat to the safety of bridges. Threat; At present, the materials of anti-collision facilities mostly used are rubber and fiberglass, which have the following limitations and defects: (1) FRP anti-collision facilities: FRP anti-collision facilities are brittle and rigid

When receiving an impact, within the bearing range of this material, the maximum deformation and reaction force appear, but due to the poor ability of this material to recover deformation, the hull is destroyed at the same time; in the next impact, if the impact force is the same, the shape produced by the material There are fewer variables. Under such repeated impacts, the material will have a minimum deformation until it is no longer deformed. In the case of another impact, the pier will be destroyed; (2) Rubber anti-collision facilities: as the collision intensifies, the rubber material The anti-collision facility will receive the maximum impact force. At this time, it will be compressed to a certain range, and there will be a maximum reaction force. With the appearance of the maximum reaction force, the maximum deformation of the rubber anti-collision facility will be compressed. The elastic process of anti-compression, but under such an impact, the rubber anti-collision facilities cannot fully recover the deformation, that is, a lower deformation and reaction force appear during the rebound process. With such a fixed deformation value, the reaction The force effect will no longer change, and the protective effect will be greatly reduced; in addition, the impact energy that the existing anti-collision facilities can offset is limited, and there are still some anti-collision equipment that can only offset local impact energy from some special angles, so The anti-collision effect is not very good, and the protective effect is limited; in summary, the existing anti-collision facilities for ships have various defects such as high investment cost, short service life, and poor anti-collision effect to varying degrees. and deficiency

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