Under what circumstances can chain block not be used?

Chain block is a widely used manual lifting tool with a long history. chain block can be used in open air and without power supply. However, in order to use chain block safely and efficiently, it is necessary to carefully understand its usage methods and specifications. Under what circumstances is chain block prohibited? First, don't use chain block when the light is not good at night. You can't see it during operation, let alone use it. Second, it is forbidden to use chain block when the chain is seriously worn, cracked or deformed. Three, in the process of lifting goods tilt, loose binding ban continue to work, to stop immediately; Four, goods overload is prohibited; Five, chain block has obvious cracks, there is relatively large noise, prohibit the use of.