ASME B30.18:2021 pdf download

ASME B30.18:2021 pdf download.Stacker Cranes
Volume B30.18 includes provisions that apply to the construction, installation, operation, inspection, and maintenance of hand-powered and power-driven over- head and gantry cranes that have a top or under running multiple girder bridge with a vertically guided carriage, with or without a top or under running trolley. The requirements included in this Volume also apply to stacker cranes having the same fundamental characteristics, such as cantilever gantry and semi- gantry stacker cranes.
cab-operated stacker crane: a crane controlled by an operator in a cab that is attached to the bridge mast, trolley, stacker mast, or load carriage (see Figure 18-0.2.1-1). cantilever gantry stacker crane: a gantry or semi-gantry crane in which the bridge girders extend transversely beyond the crane runway on one or both sides. crane: a machine for lifting and lowering a load and moving it horizontally, with the hoisting mechanism being an integral part of the machine. floor-operated stacker crane: a crane that is controlled by an operatoron the floororan independentplatform using ameanssuspendedfromthecrane(seeFigure18-0.2.1-2). gantrystackercrane: a crane similar to an overhead crane except that the bridge for carrying the trolley(s) is rigidly supported on two or more legs running on fixed rails or other runway. outdoorcrane: an overhead or gantry crane that operates outdoors and for which provisions are not available for storage in an area that provides protection to the crane from weather conditions. An indoor crane that may operate outdoors on a periodic basis is not classified as an outdoor crane. power-operated stacker crane: a crane whose mechanism is driven by electric, air, or hydraulic means. pulpit-operated crane: a crane operated from a fixed operator station not attached to the crane. remote-operated crane: a crane whose movements are controlled by an operator through the use of controllers contained in a portable operating station not attached to the crane. semi-gantry stackercrane: a gantry crane with one end of the bridge rigidly supported on one or more legs that run on a fixed rail or runway, the other end of the bridge supported by a truck running on an elevated rail or runway. stacker crane: a crane used for stacking and retrieving palletized or containerized materials, with a multiple girder movable bridge carrying a hoisting mechanism, mast, and carriage (see Figure 18-0.2.1-3).
abnormaloperating conditions: environmental conditions thatareunfavorable, harmful, ordetrimentalto the opera- tion of the equipment, such as excessively high or low temperatures, exposure to adverse weather, corrosive fumes, dust- or moisture-laden atmospheres, and hazard- ous locations. aisle: space between storage compartment rows in which the equipment may operate. ampacity: current-carrying capacity of electric conduc- tors, in amperes. automatic or automatically: pertains to equipment func- tions that do not require the attention of the operator during their functional operation. brake: a device, other than a motor, used for retarding or stopping motion by means of friction or power. bridge: that part of a crane consisting of one or more girders, trucks, end ties, footwalks, and drive mechanism that carries the trolley or trolleys. bridge conductors: the electrical conductors located along the bridge structure that transmit control signals and power to the trolley(s). bridge travel: the movement in a direction parallel to the crane runway. bumper (buffer): 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 crane, trolley, or runway stop.