Ratchet puller hoists, also called come-alongs, are manually operated devices that lift, lower, and pull heavy loads. They are commonly suspended or attached to structures by hook mounts, and are used in the construction, manufacturing, mining, and material handling industries, among others, as well as in small workshops.
Ratchet puller hoists leverage a manually exerted force applied to a lever and ratchet across a pulley, sheave, drum, or spool into one strong enough to lift or pull the load. When the force is applied to the lever, it rotates and winds a rope or wire around the pulley, sheave, drum, or spool to raise or pull the load. The load is usually lifted or pulled by a hook attached to the rope or wire. The ratchet acts as a brake to keep the wire or rope from unwinding under the load. Ratchet puller hoists can be operated on any angle, and are suitable for vertical lifting and lowering, and for pulling loads.
When selecting a ratchet puller hoist, consider the load capacity and lift, according to the specific application. Load capacity is the maximum weight a manual chain hoist can handle, expressed in pounds or tons. Lift is the maximum vertical distance the load hook can move a load, expressed in feet.