Winching System Types

Block and tackle pulley system:

A block and tackle is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift or pull heavy loads. The pulleys are assembled together to form blocks so that one is fixed and one moves with the load. The rope is threaded, or reeved, through the pulleys to provide mechanical advantage that amplifies that force applied to the rope.

Western Differential Pulley:

A differential pulley, sometimes called a "chain hoist," or sometimes colloquially called a "chain fall," is used to manually lift very heavy objects like car engines. It is operated by pulling upon the slack section of a continuous chain that wraps around pulleys. The relative sizes of two top pulleys determine the maximum weight that can be lifted by hand.

Electrical Winch:

A winch is a mechanical device that is used to pull in (wind up) or let out (wind out). Winches stand at the heart of machines as diverse as tow trucks, steam shovels and elevators. The winch drums have gear assemblies which are powered by electric drives. Some may include a solenoid brake and/or a mechanical brake or ratchet and pawl device that prevents it from unwinding unless the pawl is retracted.

Electric Chain Hoist:

An electric chain hoist will can lift heavy loads easily and efficiently. Some electric chain hoist models offer hook suspensions, fully enclosed non-ventilated systems that protect the motor from being contaminated by outside environmental elements, quick connect chains to prevent chains from slacking, and push button operation.