Shackles are widely used in electric power, metallurgy, petroleum, machinery, railways, chemicals, ports, mining, construction, and other industries. At present, the better shackles are generally made of alloy steel, which has changed the history of ordinary carbon steel in the past. National standard shackles include general lifting shackles, marine shackles, and ordinary shackles. The weight is heavier and the volume is large, and it is generally not installed in a location that is not frequently disassembled. When choosing a shackle, pay attention to the safety factor, generally 4 times, 6 times, and 8 times. When the shackle is used, the rated load must be strictly observed. Excessive frequent use and overload use are not allowed.

Before use, perform a visual inspection to confirm whether the lifting rings and shaft pins are worn or damaged. If any, they should be scrapped immediately; ensure that the shackle identification is clearly visible; insert the shaft pin into the shackle ring by hand; check the shackle Whether the shaft pin is suitable; check the rated load of the shackle; use the shackle according to the manufacturer’s instructions.

It is forbidden to use any shackle that has been damaged, bent or modified; it is forbidden to use shackles with unclear markings; it is forbidden to use tools to lock the shackle shaft pin; it is forbidden to repair, modify, or replace shackle parts without permission; it is forbidden to use bolts or Metal rods instead of shackle pins; hooks larger than the diameter of the opening of the shackle are prohibited; overloaded use is prohibited.

The shackle is a kind of sling, which is widely used in various industries such as electric power, metallurgy, petroleum, machinery, railway, chemical industry, port, mining, construction, and so on. The safety factor of the shackle is 4 times, 5 times, 6 times, and 8 times.

The bolt shackle is a branch of the shackle. Both round pin shackles and bolt shackles can be used. In addition, permanent or long-term use of shackles may cause the shackle to roll over when the load is used. The bolt-type shackle may cause the bolt to rotate; the secondary locking device of the bolt-type shackle uses a nut and a safety adjustment, which eliminates the need for locking before each lifting or load movement; the bolt-type shackle must be confirmed to have a safety lock before using it.