ASME B30.25 pdf download

ASME B30.25 pdf download.SCRAP AND MATERIAL HANDLERS.
Volume B30.25 includes provisions that apply to the construction, installation, operation, inspection, and maintenance of scrap 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 tlw same fundamental characteristics. The provisions included in this volume apply to scrap handlers that are crawler mounted, rail mounted, wheel mounted, or on pedestal bases. The scope includes only handlers used to lift. lower, and swing scrap and material at various radii, which are powered by internal combustion engines or electric motors, and which are operated hydraulically.
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 clearance, 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).
pedestai-rnounte4 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 (rnultzpk control stations): mounted on a base, equipped with axles and rubber-tired wheels for travel, a power source(s), and having separate control stations for driving and operating (see Fig. 4).
(c) AU handlers shall be equipped with a travel alarm meeting the requirements of SAE 11446.
(d) On wheel-mounted handlers, the travel and steering mechanism shall be designed to permit a controlled stop in the event of the loss of engine power.
25-1.4.2 Travel Brakes
(a) Rail-mounted handlers shall be equipped with brakes capable of bringing the handler to a stop while descending the maximum grade recommended for travel, in addition, means shall be provided to engage brakes manually. Such engagement means shall be capable of holding the handler stationary on the maximum grade recommended for travel, and shall remain engaged in the event of loss of power.
(b) Crawler-mounted handlers shall be equipped with a service brake system, a secondary brake system, and a parking brake system that meet the brake performance requirements specified in ISO 10265. The brake systems may use common components; however, in the event of a failure of any single component, the remaining brake system(s) shall provide handler stopping capability meeting the secondary brake system performance requirements specified. After being applied, the parking brake system shall not be dependent upon an exhaustible energy source.
(c) Wheel-mounted handlers shall be equipped with a service brake system, a secondary brake system, and a parking brake system and meet the brake performance requirements defined in ISO/SAE J3450. The brake systems may use common components; however, in the event of a failure of any single component other than a tire, the remaining brake system shall provide handler stopping capability meeting the secondary brake system performance requirements specified. After being applied, the parking brake system shall not be dependent upon an exhaustible energy source.
(d) Prior to being placed in service, all new or modified handlers shall be tested by the manufacturer or assembler/modifier to verify that the brake systems meet the specifications in paras. 25-1.4.2(a), (b), and (c).
SECTION 25-1.5: CONTROLS
25-1.5.1 General
This Section describes two lever-type operating controls for wheel-mounted, crawler-mounted, or rail- mounted handlers on independent tracks.
(a) Primary controls are those that affect the handler’s basic functions and are used by the handler operator while at the operator station.
(b) Controls for all front primary functions and all handler travel controls (except steering wheel, travel direction, and clutch control) shall return to their neutral.