Combined type fender

Abstract

The invention relates to a combined type fender, which is a protective device to be used in docks, shipping and oceanographic engineering. The combined type fender is characterized by consisting of a shell, a buffering protective layer and a liner. The combined type fender integrates the advantages of various fenders, has the characteristics of toughness, extrusion resistance, fatigue resistance, ageing resistance and long service life of a fender taking rubber as a buffering medium, and avoids the disadvantages that the weight is large, the fender cannot float on a water surface, energy absorption is less and counter-force is large; the combined type fender also has the advantages of light weight, convenient installation, large energy absorption, small counter-force and pricking resistance which are possessed by a fender taking a foaming material as the buffering medium, and avoids the disadvantages of slow response speed and short service life; and in addition, the combined type fender also has the advantages of light weight, convenient installation, large energy absorption, small counter-force, quick response speed, capability to backpressure adjustment on the energy absorption and the counter-force and the like which are possessed by an air inflation type fender taking gas as the buffering medium, and avoids the defects that the combined type fender is easy for pricking, aging and air leakage, and needs to be maintained frequently.

Description

technical field [0001] The invention relates to a composite fender, which is a protective device used in docks, ships and marine engineering. Background technique [0002] There are many types of fender products in use at present, which can be divided into hard rubber, foam material (sponge) and gas according to the structure of the buffer medium. Cylindrical fenders hanging on the wharf and ship’s side and fenders with spherical ends of the cylinder are also called ball-based. Cylindrical fenders are made of hard rubber, which absorb the impact energy of the ship by rubber deformation. This kind of fender absorbs less impact energy, has greater reaction force, and is heavy, and will not float with the tide level, so it is not suitable for sea areas with large tidal range. Among the hemispherical fenders at both ends of the cylinder, some are filled with foam material as the buffer medium, and some are filled with gas as the buffer medium. The fenders using these two buffer...

AI Technical Summary

Problems solved by technology

Cylindrical fenders hanging on the wharf and ship’s side and fenders with spherical ends of the cylinder are also called ball-based. Cylindrical fenders are made of hard rubber, which absorb the impact energy of the ship by rubber deformation. This kind of fender absorbs less impact energy, has greater reaction force, and is heavy. It will not float with the tide level, so it is not suitable for sea areas with large tidal range.

Among the hemispherical fenders at both ends of the cylinder, some are filled with foam material as the buffer medium, and some are filled with gas as the buffer medium. The fenders using these two buffer media are light in weight, easy to install, and can float on the water surface. In general, the advantages of large energy absorption and small reaction force are very popular, but there are also defects such as short service life. The fender using EVA foam material as the buffer medium has slow response speed, poor elasticity, and low material strength. The pressure is easy to be crushed; the inflatable fender is easy to be punctured, and the shell of the fender will age and leak after repeated extrusion and long-term sunlight. In order to prevent the inflatable fender from being punctured, it is necessary to use old tires and The anchor chain is made into a net for protection, which is expensive, ugly, and will damage the paint film on the side of the ship

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