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ASME B30.1-2009 pdf download

ASME B30.1-2009 pdf download.Jacks, Industrial Rollers, Air Casters, and Hydraulic Gantries.
landing pads: structural spacer(s) mounted below an air caster module structure, which provides support while the air bladder is deflated. lateral: the horizontal direction perpendicular to the length of the gantry system track. load: the total superimposed weight or force to be over- come by the load-handling equipment. load point: the point of load application. load point, auxiliary: any point of load application other than the load point. load point, integral auxiliary: any nonremovable point of load application other than the load point. longitudinal: the horizontal direction parallel to the length of the gantry system track. module structure (air caster): the load support platform that interfaces between the load and the air bladder. overload: any load greater than the rated load. overtravel: movement beyond maximum travel (mechan- ical jack) or stroke (hydraulic jack) for which the jack was designed. ply separation: a delamination of at least two layers of rubber and/or reinforcement material. qualified person: a person who, by possession of a recog- nized degree in an applicable field or certificate of pro- fessional standing, or who, by extensive knowledge, training, and experience, has successfully demonstrated the ability to solve or resolve problems relating to the subject matter and work. rated load: the maximum allowable working load estab- lished by the equipment manufacturer. The terms rated capacity and working load limit are commonly used to describe rated load. screw extension: a device that increases the hydraulic jack’s closed length. 2 service, normal: service that involves use of loads at or below the rated load. service, severe: service that involves normal service cou- pled with abnormal rigging or operating conditions. service, special: service thatinvolves operation, other than normal or severe, which is approved by a qualified person. shall: indicates that the rule is mandatory and must be followed. should: indicates that the rule is a recommendation, the advisability of which depends on the facts in each situation. sideshift: lateral movementofasuspended load alongthe header beams of a telescopic hydraulic gantry system. stroke: linear extending or retracting movement of the hydraulic jack (Chapter 1-2) or gantry leg (Chapter 1-6). telescopic hydraulic gantry leg: a structural base that is supported on wheels or a frame and that has one or more vertical lift cylinders or boom. telescopic hydraulic gantry system: two or more telescopic hydraulic gantry legs, a hydraulic power unit, control console, hoses, and one or more header beams that span between the legs. travel: linear extending or retracting movement of the mechanical jack (Chapter 1-1); horizontal movement of the telescopic hydraulic gantry system along the track (Chapter 1-6). SECTION 1-0.3: REFERENCE Recommended Practices for Telescopic Hydraulic Gantry Systems Publisher: Specialized Carriers & Rigging Association, 2750 Prosperity Avenue, Suite 620, Fairfax, VA 22031- 4312 (www.scranet.org)
SECTION 1-1.0: SCOPE This Chapter applies to mechanical jacks. SECTION 1-1.1: TYPES AND DESIGN 1-1.1.1 Types (a) Types are screw and ratchet style (see Figs. 1-1.1.1-1 through 1-1.1.1-4) and are primarily used in a vertical position. (b) All jacks covered by this Chapter shall incorporate a positive stop or method to prevent over travel. (c) Mechanical jacks not covered by this Chapter should be used in accordance with recommendations of the manufacturer or a qualified person. 1-1.1.2 Design (a) The load-bearing materials in the jack shall have sufficient strength and ductility to raise, lower, and sup- port the rated load at the temperatures at which it will be used. (b) The jack shall be designed to meet the proof load requirements in para. 1-1.4.2(a). (c) The jack should be designed to ensure that the computed stress in the structural components of the jack does not exceed 50% of the yield strength of the material at the appropriate rated load for the components. (d) Control parts and accessory equipment shall be designed to provide a means of operation and adjust- ment that will minimize exposure of the operator to injury. (e) Carrying handles, if provided, shall be capable of statically supporting 200% of the weight of the jack. (f) Changes in physical properties caused by welding handles, eyes, or other approved attachments to a mechanical jack shall be taken into account.

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