1. The ship is overweight

This kind of damage often occurs in rubber fenders, especially in some old rubber fenders, which are usually cracked at the weak foundation of the structure. The gap is usually in the long and short direction of the rubber fender. Type D and type V rubber fenders are more common. The key cause of the rubber fender cracking is that the mechanical energy of the ship colliding with the rubber fender is very large, which exceeds the load that the rubber fender can bear. The cause of excessive mechanical energy of ship collision is the excessive speed and Angle of view of ship collision. When the docking Angle is very large, the bow of the ship touches the port and the rubber fender in the middle and south of the hull, resulting in the concentration of strong collision mechanical energy on one or more rubber fenders, resulting in the destruction of the rubber fender. Lead to ship collision effect is too large, in addition to the above reasons, there are also port berthing more than the design of passenger and cargo ships and tonnage of ships and strong winds and waves on the ship harm.

2. Poor anchorage and connection of steel bars

This situation has occurred in various rubber fenders. Rubber fender loose, out of position, falling into the sea and other abnormal conditions. The key reason for this situation is that the technical situation such as the anchor bolts or iron chains of the steel bar anchorage rubber fender is not good, or the maintenance is not followed up. Metal composite materials such as steel anchor bolts and iron chains that fix rubber fenders rust quickly in Marine resources, and are not easy to disassemble, resulting in poor fixing of rubber fenders, which seriously endangers all normal applications of rubber fenders. Although the design scheme of some steel anchor bolts takes into account the standard of disassembly, it is usually not ideal in the specific application. For example, V-type rubber fender steel bars anchor anchor bolts and anchor bolt boxes of embedded parts. The original design is intended to facilitate the maintenance and replacement of reinforcement anchor bolts, but in the specific application, it can not be replaced because of steel rust, anchor bolts deformation, etc., which endangers the fixed quality of rubber fender, resulting in rubber fender falling and destruction.

3. Friction damage

This is usually the case in mobile V and D rubber fenders. The key rubber fender has the damage condition of falling Angle, splitting, surface abrasion and so on. The key reason for this kind of damage is the sliding friction between the rubber fender and the ship. When the ship is approaching the port at a very large tangential speed, the rubber fender and the hull of the ship are forced to move forward together with the ship due to excessive sliding friction, resulting in the rubber fender being damaged by shear. In addition, during the anchoring period, the ship sometimes has to move forward and backward, and the ship is swayed up and down or from side to side by waves and currents. In this case, when the friction resistance between the ship and the rubber fender is large 0.4 (such as the tether is pulled too tight), it will often lead to the destruction of the rubber fender.

Hebei Samai Technology Co., Ltd. mainly produces sewage water blocking air bags, pipeline blocking air bags, high pressure air bags, repair air bags and disembark air bags and Marine guard strings and other rubber products. Our factory with good professional level and excellent technology in the industry, the rapid rise in the industry and occupy a place. To become a strong and large-scale enterprise in the rubber products industry, the company has been operating for many years, and the products are sold to major provinces and cities in the country as well as export trade at home and abroad. Welcome the majority of enterprises, users and consumers to contact us, we will be in line with the use of good products, to provide users with good service for the purpose, dedicated to serve you!