The mining lifting chain can adjust the length of the chain according to the lifting height of the lifting object. The crane is indispensable. The important retrieval device plays an important role in improving the operating efficiency of the crane and expanding the operating range of the crane. It is mainly used for lifting hoists and other lifting equipment, and is one of the important lifting rigging for lifting and traction operations. It has been widely used in manufacturing, mining, transportation and other fields.
The allowable wear value of the mining lifting chain should not exceed 10% of the diameter of the bar material of the ring chain or the thickness of the auxiliary equipment. From the plane where the main ring does not bend, the main ring should be scrapped if it twists more than 10 degrees. , The phenomenon of bending or twisting and the phenomenon of seizure or stiffness between the ring hinges can not be used when it cannot be ruled out. The permanent extension of the lifting chain and the single ring shall not exceed 5% of the original length.
