ketttõstuk

A ketttõstuk, which translates from Estonian to "chain hoist," is a lifting device that uses a hoist chain to lift and move heavy loads. It is a type of manual or powered lifting equipment commonly found in industrial settings, workshops, garages, and construction sites.

There are typically two main types of chain hoists: manual and electric. Manual chain hoists are operated by pulling a hand chain. This action engages a load chain, which is a strong chain with interlocking links, to lift the attached load. They are often used for lighter loads or when electricity is not readily available. Electric chain hoists, on the other hand, use an electric motor to lift and lower the load by operating the load chain. These are preferred for heavier loads and situations where frequent lifting is required, as they reduce the physical effort needed.

The main components of a chain hoist include the hoist chain, a lifting mechanism (often a hand-cranked sprocket for manual hoists or a motor for electric ones), a hook for attaching to the load, and a frame or casing that houses the internal workings. Safety features such as overload protection are often incorporated to prevent damage and accidents. Chain hoists are valued for their simplicity, reliability, and the precise control they offer in lifting operations.