Cranes

Cranes

A crane is a type of machinery used for lifting and moving heavy materials in construction, transportation (loading and unloading merchandise) and other fields. Most cranes are equipped with a hoist, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them around.

Industry: Industrial machinery

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Cranes

plugging relay

Industrial machinery; Cranes

A current relay used on a bridge or trolley control panel which senses current in the motor secondary circuit of an alternating current motor and limits reverse torque of the motor to the first ...

critical lift

Industrial machinery; Cranes

A critical lift is defined in the construction industry by different organizations and includes: 1) hoisted loads approaching the crane's maximum capacity (70% to 90%); 2) lifts involving two or more ...

crawler crane

Industrial machinery; Cranes

A crawler is a crane mounted on an undercarriage with a set of tracks (also called crawlers) that provide for the stability and mobility of the crane. Crawler cranes range in lifting capacity from ...

interlocking crane

Industrial machinery; Cranes

A crane with an interlock mechanism on one or both ends enabling it to be mechanically locked to another crane, crossover, or spur track for the purpose of transferring a carrier from one to another.

overhead crane

Industrial machinery; Cranes

A crane with a movable bridge carrying a movable or fixed hoisting device that travels on a fixed runway. Also known as a 'suspended crane', this type of crane work very similar to a gantry crane but ...

stacker crane

Industrial machinery; Cranes

A crane with a forklift type mechanism used in automated (computer controlled) warehouses (known as an automated storage and retrieval system (AS/RS)). The crane moves on a track in an aisle of the ...

pulpit-operated crane

Industrial machinery; Cranes

A crane whose operator uses controllers located in a movable or fixed platform or cab that is separate from the crane or a control room to control movement of the crane