fender Also known as fender, it is an energy buffer device used on port terminals or ships to mitigate the impact or shock of ships and docks or ships when berthing or mooring, so as to protect ships and docks from damage.
Rubber fenders are widely used in Japan, Europe, America and Southeast Asia because of their good elasticity, high energy absorption, convenient maintenance, long service life and ease of mass production. Rubber fenders can not only protect ships and docks, but also reduce the horizontal load acting on docks, improve the berthing capacity of docks, make new docks lighter and reduce costs.
The size range of rubber fenders is large. It is easy to choose matching vulcanization equipment for products with conventional size, but the investment in large-scale vulcanization equipment required for oversized products is too high, especially when the product batch is small, it is not cost-effective to invest in large-scale vulcanization equipment.
Solid rubber fenders have the advantages of high energy absorption and reaction force, low cost, long service life, simple installation and maintenance, and are the protective devices installed more frequently in docks and docks.
Floating rubber fender is a relatively new type of fender equipment. Compared with solid rubber fender, its main characteristics are: Large compression deformation, large energy absorption, small reaction force, self floating, easy installation, etc. It is usually used in ship to ship, ship to wharf cargo lightering, docking and other occasions; Due to its self floating characteristics, it is also particularly suitable for installation at the wharf with large tidal level changes. The filled rubber fenders are especially suitable for applications in harsh environments, such as offshore drilling platforms, due to their advantages of free maintenance, long life, etc.
Type of rubber fender
1） Cylindrical rubber fender ：
Features: low reaction force, small surface pressure, reasonable energy absorption; When berthing, it has strong adaptability to rolling and pitching of the ship and is not affected by the size of the ship. It is widely used and easy to install and maintain, especially suitable for old wharfs.
2) Semi circular (D-type) rubber fender:
Features Moderate reaction force, higher energy absorption than cylindrical type; Installation is convenient; Because the bottom width is small, it is especially suitable for the installation of frame wharf and ship side.
3) DO type rubber fender:
Characteristic: The energy absorption of reaction force is higher than that of D-type fender; The installation strength and service life are greatly improved compared with D-type fenders; It is applicable to frame wharf.
Arch (V) rubber fender: Features moderate reaction force and high energy absorption; Firm and convenient installation;
It is applicable to various wharves.
4) DA type rubber fender:
Features: high energy absorption and low reaction force; The products have higher stress dispersion and long service life; The front end is equipped with a guard board to reduce the surface pressure; Complete specifications and various installation methods; Easy to replace
5) Drum rubber fender:
Features: low reaction force, large energy absorption; The surface pressure is below 25t/m2; The mechanical properties of inclined compression decrease slightly; Π type rubber fender: Features: low reaction force, large energy absorption; Easy installation; Generally suitable for large and medium-sized wharfs
Standard for rubber fenders
The industry standards adopted for solid rubber fenders are HG ／ T 2866 － 2016 Rubber Fenders and GB ／ T 21537 － 2008 Conical Rubber Fenders.
The industry standards for inflatable rubber fenders in China are CB-T 3948 Marine Inflatable Rubber Bulb and the international ISO standard ISO17357: 2002 《High pressure Floating pneumatic rubber fenders》。 The filled floating rubber fender is a new product, and there is no international standard or industrial standard
