The key to lifting heavy objects with a chain hoist lies in the precise coordination between the chain and sprocket. The hand zipper strip is composed of multiple nested chain links at the beginning and end, and the size and shape of each chain link have been accurately calculated; The corresponding hand zipper wheel has a groove contour that perfectly matches the hand zipper chain link, ensuring efficient transmission between the two.

During the homework process, when the operator pulls the zipper strip, the meshing relationship between the chain link and the sprocket groove begins to take effect. As the chain is pulled, the chain links that detach from the sprocket are constantly replaced by new ones, forming a continuous cyclic motion. This continuous and stable operating mode enables the sprocket to convert tension into rotational power, which in turn drives the lifting chain through an internal transmission mechanism to achieve smooth lifting and lowering of heavy objects.

From this, it can be seen that the chain wheel and chain of the chain hoist are interdependent and work together, which is the key to completing the lifting operation of the chain hoist.