ASME B30.22 pdf download.Articulating Boom Cranes.
SECTiON 22-0.1: SCOPE OF B30.22
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 electtic motors and that are mounted on a mobile chacsis 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 convertible for excavating work and other uses not considered 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 manufacturer) a qualified person shall establish the ratings, operating limitations, maintenance, testing. and inspection requirements that apply during that use.
Exemptions from this Volume include
(a) units with a maximum rated capacity of 2,0)0 lb (907 kg) or less
(b) units with booms constructed of nonconductivetype materials
(c) units equipped with or designed primarily for personnel baskets, platforms, ladders, etc.
(d) units when equipped with nonlifting attachments (e) units while used in forestry and logging applications
(1, telescoping boom cranes that do not articulate (covered under ASME B30.5)
(g) scrap and material handlers as defined in
ASME B30.25
SECTiON 22-0.2: DEFiNITIONS
22-0.2.1 Mounting of Articulating Boom Cranes
commercial truck-rnounhd: a crane, consisting of a rotating mast, mainframe or base, boom, and one or more operator’s stations, such as ground controls (Fig. 22.2.1-1), top seat controls (Fig. 22-0.2.1-2), or remote controls and controlled lowering functions required in crane service when operated under recommended conditions.
(2) Cylinders utilized with a load hoist rope reeving system shall provide a working rope capacity (length) for that system with the recommended rope size and reeving to perform crane service with the range of boom lengths, operating radii, and vertical lifts specified by the manufacturer.
(3) Cylinders shall he equipped with a load-holding device to prevent uncontrolled lowering of the load in case of hydraulic line failure.
(4) The load hoist cylinder shall be capable of holding rated load without action of the operator.
SECTION 22-1.3: SWING MECHANISM
22-1.3.1 Swing Control
The swing mechanism shall start and stop with controlled acceleration and deceleration.
22-1.3.2 Swing Braking Means and Locking Devices
(a) A stopping means with holding power in both directions shall be provided to restrict movement of the rotating mast, when desired under normal operation. The braking means shall be capable of being set in the holding position and remaining so without further action by the operator.
(b) A positive locking device or boom support shall be provided to prevent the boom from rotating when in stowed position for transit.
SECTION 22-1.4: CRANE TRANSPORT
Commercial truck vehicle-mounted cranes shall meet applicable requirements of U.S. Department of Transportation S4andards.
SECTION 22-1.5: ROPES AND REEVING ACCESSORIES
22-1.5.1 Rope Design Factors
(a) For supporting rated loads and for supporting the boom and working attachments at recommended travel or transit positions and boom lengths, the design factor for live or running ropes that wind on drums or travel over sheaves shall not be less than 3.5.
(b) For supporting the boom under recommended boom erection conditions, the design factor for live or running ropes shall not be less than 3.0.
(c) The design factors for rotation resistant ropes and synthetic ropes shall not be less than 5.0.
ASME B30.22 pdf download
