Rubber fenders mainly include shear type, rotary type, compression type, inflatable type and hydraulic type. Among them, the compressed rubber fender has the characteristics of simple structure, easy manufacture and convenient installation, and is the most widely used variety at home and abroad. Compression rubber fenders can be subdivided into D-type, cylindrical type, V-type, H-type, drum-type and II-type according to the structural form, of which D-type and cylindrical type are early varieties, and V-type is the 1960s. The varieties that have appeared and are used in a large amount, H-type, drum-type and II-type are new varieties developed for large ships in recent years. H-type, drum-type and II-type rubber fenders are characterized by large product sizes, and metal, plastic or wooden anti-shock plates are installed in front of the rubber body. There are many applications for large docks.
Most rubber fenders are all rubber products, but large fenders often have reinforcement layers, and the connection with the shore wall is also reinforced with steel plates. Therefore, the firm combination of steel inserts and rubber is one of the problems that must be reasonably solved.
With the development of large-scale ships and wharves, the performance requirements of rubber fenders are getting higher and higher. In addition to high energy absorption, low reaction force and low pressure on the hull, it is also required to have wear resistance, oil resistance, seawater erosion resistance and High bonding strength and other characteristics, but also to consider reducing costs.