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

average ultimate strength

Industrial machinery; Cranes

The average tensile force per unit of cross sectional area required to rupture the material as determined by test.

drive

Industrial machinery; Cranes

The assembly of the motor and gear unit used to propel the bridge or trolley.

load block

Industrial machinery; Cranes

The assembly of hook, swivel, bearings, sheaves, pins and frame suspended from the hoisting ropes. In a "short type" block, the hook and the sheaves are mounted on the same member, called the swivel. ...

fleet angle

Industrial machinery; Cranes

The angle formed by the wire rope and the drum groove or sheave groove in the plane which contains the wire rope and is parallel to the drum or sheave axis. Refer to Figure 90 in Part B of Section ...