A chain hoist, also known as a chain block or chain pulley, is a mechanical device used for lifting, lowering, and moving heavy loads. It consists of a sturdy housing or frame that contains a lifting mechanism, a load chain, and a lifting hook. The lifting mechanism is typically operated by a hand chain or a lever, which enables the user to control the lifting and lowering of the load.
The load chain is made of high-strength alloy steel and is designed to handle heavy loads safely. It runs over a chain wheel or pulley within the housing, and one end of the chain is connected to a lifting hook. The lifting hook securely holds the load, allowing it to be lifted and moved.