ASME B30.22:2000 pdf download

ASME B30.22:2000 pdf download.Articulating Boom Cranes
The scope includes cranes of the types described in para. 22-0.2.1 that are articulated by hydraulic cylinders and powered by internal combustion engines or electric motors and that are mounted on a mobile chassis or stationary installation. Articulating cranes equipped with a load hoist mechanism to broaden their versatility are covered by this Volume. Some basic machine types within this scope are con- vertible for excavating work and other uses not consid- ered to be lifting service. The requirements of this Volume are applicable only to such machines when used as lifting cranes. When cranes within the scope of this Volume are used for service other than lifting service, the manufacturer or (when not available from the manu- facturer) a qualified person shall establish the ratings, operating limitations, maintenance, testing, and inspec- tion requirements that apply during that use. Exemptions from this Volume include (a) units with a maximum rated capacity of 2,000 lb (907 kg) or less (b) units with booms constructed of nonconductive- type materials (c) units equipped withordesigned primarilyfor per- sonnel baskets, platforms, ladders, etc. (d) units when equipped with nonlifting attachments (e) units while used in forestry and logging applications (f) telescoping boom cranes that do not articulate (covered under ASME B30.5) (g) scrap and material handlers as defined in ASME B30.25
commercial truck-mounted: a crane, consistingofa rotating mast, mainframe or base, boom, and one or more opera- tor’s stations, such as ground controls (Fig. 22-0.2.1-1), top seat controls (Fig. 22-0.2.1-2), or remote controls (Fig. 22-0.2.1-3), mounted on a frame attached to a com- mercial truck chassis, with or without a payload capabil- ity, whose power source may power the crane. The function is to lift, lower, and swing loads at various radii. crawler-mounted: a crane, consisting of a rotating mast, mainframe or base, operator’s station(s), and boom, mountedoncrawlertreads fortravel. Itmaybe equipped with a single control station or have separate stations for driving and operating. Its function is to lift, lower, and swing loads at various radii. See Fig. 22-0.2.1-4. stationary: a crane, consisting of a rotating mast, main- frame or base, and boom, mounted on a stationary struc- ture. The function is to lift, lower, and swing loads at various radii from a fixed center of rotation. See Fig. 22-0.2.1-5. trailer- or railcar-mounted: a crane, consisting of a rotating mast, mainframe or base, and boom, mounted on a trailer or railcar. The function is to lift, lower, and swing loads at various radii. See Figs. 22-0.2.1-6 and 22-0.2.1-7. traveling base-mounted: a crane, consisting of a rotating mast, boom, mainframe or base, and one or more opera- tor’s stations, mounted on a traveling base. The function is to lift, lower, and swing loads at various radii. See Fig. 22-0.2.1-8.wheel-mounted: a crane, consisting of a rotating mast, mainframe or base, operator’s station(s), and boom, mounted on commercial truck vehicle, a trailer, or an off-road vehicle equipped with axles and rubber-tired wheels. It may be equipped with a single control station or have separate stations for driving and operating. Its function is to lift, lower, and swing loads at various radii. See Figs. 22-0.2.1-1, 22-0.2.1-2, 22.0.2.1-3, 22.0.2.1-7, 22-0.2.1-8, and 22-0.2.1-9.
alteration (modification): any change in the original equipment manufacturer’s design configuration of the crane that pertains to load-supporting components, load-positioning components, and other components that affect the safe load-carrying capability of the crane (e.g., counterweights, holding valves) including operational aids, limit devices, and load charts. anti-two-blockdevice: a device that, whenactivated, disen- gages all crane functions whose movement can cause two-blocking. axle: the shaft or spindle with which or about which a wheel rotates. On wheel-mounted cranes, it refers to a type of axle assembly, including housings, gearing, differential, bearings, and mounting appurtenances. axle (tandem): two or more axles mounted in tandem in a frame so as to divide the load between the axles and permit vertical oscillation of the wheels. ballast (counterweight): weight used to supplement the weight of the machine in providing stability for lifting working loads. boom extension cylinder: the hydraulic cylinder(s) that extends the boom’s extensions.