ASME B30.2:2011 pdf free download

ASME B30.2:2011 pdf free download.Overhead and Gantry Cranes.
braking, hydraulic: a method of controlling or reducing speed by means of displacement of a liquid.
braking, mechanical: a method of controlling or reducing speed by friction.
braking. pneumatic: a method of controlling or reducing speed by means of compressed gas.
braking, regenerative: a method of controlling speed in which the electrical energy generated by the motor is fed back into the power system.
braking, seri.’ice: a method to decelerate crane motion during normal operation.
bridge: that part of a crane consisting of one or more girders, trucks, end ties, lootwalks, and drive mechanism, which carries the trolley or trolleys.
bridge travel: the crane movement in a direction parallel to the crane runway.
bumper (buer): a device for reducing impact when a moving crane or trolley reaches the end of its permitted travel, or when two moving cranes or trolleys come into contact. This device may be attached to the bridge, trolle or runway stop.
cab: the operator’s compartment on a crane.
cab, normal: operator’s compartment used for controlling a cab-operated crane.
cab, skeleton: operator’s compartment used for occasional cab operation of a normally floor- or remote-operated crane.
cantilever frame: a structural member that supports the trolley of a wall crane.
clearance: distance from any part of the crane to the nearest obstruction.
collectors, current: contacting devices for collecting current from runway or bridge conductors.
conductors, bridge: the electrical conductors located along the bridge structure of a crane that transmit control signals and power to the trolley(s).
conductors, runway (main): the electrical conductors located along a crane runway that transmit control signals and power to the crane.
controller: a device, or group of devices, that serves to govern, in a predetermined manner, the power delivered directly to the apparatus to which it is connected.
controller, manual: a controller having all of its basic functions performed by devices that arc operated by hand.
controller. spring-return: a controller that, when released, will return automatically to a neutral (off) position.
station,remote control, automatic program control,orother similar device.
crane: a machine for lifting and lowering a load andmoving it horizontally,with the hoisting mechanismbeing an integral part of the machine.
crane, automatic: a crane which, when activated, operatesthrough a preset cycle or cycles.
crane, cab-operated: a crane whose movements are con-trolled by an operator through the use of controllerslocated in a cab that is attached to the crane.
crane, cantilever gautry: a gantry or semigantry crane inwhich the bridge girders or trusses extend transverselybeyond the crane runway on one or both sides (seeFig.2-0.2-1).
crane, floor-operated: a crane whose movements are con-trolled by an operator through the use of controllerscontained in a pendant station suspended from thecrane.