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A lifting hook is a device for grabbing and lifting loads by means of a device such as a
hoist Hoist may refer to: * Hoist (device), a machine for lifting loads * Hoist controller, a machine for raising and lowering goods or personnel by means of a cable * Hydraulic hooklift hoist, another machine * Hoist (mining), another machine * Hoist ( ...
or crane. A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope sling, chain or rope to which the load is attached. A hook may have one or more built-in
pulley A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt. In the case of a pulley supported by a frame or shell that ...
sheaves as a
block and tackle A block and tackle or only tackle is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads. The pulleys are assembled to form blocks and then blocks are paired so that one is fixed and on ...
to multiply the lifting force.


See also

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References

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American Society of Mechanical Engineers The American Society of Mechanical Engineers (ASME) is an American professional association that, in its own words, "promotes the art, science, and practice of multidisciplinary engineering and allied sciences around the globe" via " continuing ...
: ASME B30.10 "Hooks" (2014). Lifting equipment {{material-stub