The function of the bow anchor shackle with cotter pin lock is mainly reflected in safety and locking effect. The bow anchor shackle is a commonly used connector, mainly used in lifting and hoisting operations, and its safety is significantly improved by the cotter pin locking method.
The cotter pin locking method of the bow anchor shackle is different from that of the straight-in shackle. The straight-in shackle is locked only by thread engagement, while the bow anchor shackle uses a cross bolt to pass through the two round holes of the buckle body, and uses a nut and a cotter pin to lock together. Specifically, after the cross bolt passes through the round hole of the buckle body, the nut is tightened to complete the first section of protection, and then the cotter pin is inserted into the round hole at the end of the bolt, and the tail of the cotter pin is opened to form a block to prevent the nut from falling off. This double protection mechanism allows the cotter pin to provide additional protection and prevent separation even if there is looseness between the nut and the bolt.
In addition, the material and heat treatment process of the bow anchor shackle also have an important impact on its safety. It is usually forged from high-quality carbon structural steel or alloy structural steel and heat-treated. Although it is small in size, it has very high strength. This design enables the shackle to withstand greater tension and pressure during lifting operations, ensuring the stability and safety of the connection.