ASME B30.25-2007 pdf download

ASME B30.25-2007 pdf download.Scrap and Material Handlers.
SECTION 25-0.1: SCOPE OF B30.25 Volume B30.25 includes provisions that apply to the construction, installation, operation, inspection, and maintenance of scrap and material handlers consisting of a base, a revolving upper structure with operator’s station(s), and a front for lifting scrap or materials using attachments such as magnets and grapples, and any variations thereof in which the equipment retains the same fundamental characteristics. The provisions included in this volume apply to scrap and material handlers that are crawler mounted, rail mounted, wheel mounted, or on pedestal bases. The scope includes hydraulically operated scrap and material handlers powered by internal combustion engines or electric motors to lift, lower, and swing scrap and material at various radii. Hydraulic excavators designed for digging and trenching, forestry machines, machines designed for demolition, lattice and telescopic boom cranes, rail- mounted cranes for railway and automobile wreck clear- ance, and equipment covered by other volumes of this Standard are excluded. SECTION 25-0.2: DEFINITIONS 25-0.2.1 Types of Scrap and Material Handlers A scrap and material handler is herein after referred to as a “handler.” Handlers may be mounted on one of the following bases: crawler handler: mounted on a base, equipped with crawler tracks for travel (see Fig. 1). pedestal-mounted handler: mounted on a pedestal base (see Fig. 2). rail-mounted handler: mounted on a base, equipped for travel on a railroad track (see Fig. 3). wheel-mounted handler (multiple control stations): mounted on a base, equipped with axles and rubber-tired wheels for travel, a power source(s), and havingseparate control stations for driving and operating (see Fig. 4). wheel-mounted handler (single control station): mounted on a base, equipped with axles and rubber-tired wheels for 1 travel, a power source, and having a single control sta- tion for driving and operating (see Fig. 5). 25-0.2.2 General accessory: a secondary part or assembly of parts that contributes to the overall function and usefulness of a machine. administrative or regulatory authority: a governmental agency, or the employer in the absence of governmental jurisdiction. ancillary equipment: equipment not required for the basic operation of the handler. appointed: assigned specific responsibilities by the employer or the employer’s representative. arm cylinder(s): the hydraulic cylinder(s) that moves the arm in relation to the boom. arm (stick): the second section of a front, one end of which is attached to the boom. assembler/modifier: entity thatassembles and/or modifies basic components to produce a handler. attachment: an accessory like a magnet or grapple that is affixed to the second or third member of a front. authorized: appointed by a duly constituted administra- tive or regulatory authority. axis ofrotation: the vertical axis around which the handler upper-structure rotates. axle: the shaft or spindle with which or about which a wheel rotates. On wheel-mounted handlers it refers to a type of axle assembly including housings, gearing, differential, bearings, and mounting appurtenances. axle (bogie): 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. backward stability: the handler’s ability to resist overturn- ing in the direction opposite the front while in the unloaded condition. stabilizer: extendable members attached to the mounting base to increase the stability ofthe rail-mounted handler, but that may not have the capability of relieving all of the weight from the tracks. structural competence: the ability of the handler and its components to withstand the stresses imposed by the applied loads. swing: rotation of the upper structure for movement of loads in a horizontal direction about the axis of rotation. swing lock: a positive mechanism that prevents rotation of the upper structure. swing mechanism: the machinery involved in providing rotation of the upper-structure. three points of support: features of an access system that permits a person to use two hands and one foot, or two feet and one hand while ascending, descending, or moving about on the handler. travel: the movementofthe handler under its own power from one location to another. upper-structure: the rotating frame structure of the han- dler and the operating machinery mounted thereon. wheel base: the distance between centers of front and rear axles. For a multiple-axle assembly, the axle center for wheel base measurement is taken as the midpoint of the assembly.