ASME B30.29 pdf download.Self-Erecting Tower Cranes.
Volume 1130.29 includes provisions that apply to the construction, operation, Inspection. testing. and maintenance of powered self-erecting tower cranes that adjust operating radius by means of a trolley traversing a jib. These may be horizontal, elevated, articulating, or telescoping, and used for vertical lifting and lowering of freely suspended, unguided loads that consist of equip. ment and materials.
Self-erecting tower cranes have vertical or nearly vertical masts that are bottom slewing and mounted on fixed, traveling, or mobile bases. The cranes are capable of moving or being moved from job site to job site fully assembled or nearly fully assembled.
This Volume does not apply to cranes used for nonvertical lifting service or lifting a guided load, or to truck- mounted material delivery cranes with a tubular boom and trolley traversing the boom. Tower cranes (refer to ASME 1130.3) and mobile crane tower attachments (refer to ASME B30.5) are not within the scope of this Volume.
SECTION 29-0.2: DEFINITIONS
29-0.2.1 Types of Self-Erecting Tower Cranes
See Figures 29.0.2.1.1 and 29-0.2.1-2.
29-0.2.2 GeneraL
accessory: a secondary part or assembly of parts that contributes to the overall function and usefulness of a machine.
administrative or regulatory authority: govern mental agency, or the employer in the absence of governmental jurisdiction.
axis of rotation: the vertical line about which a crane swings.
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.
balanced: the condition of the superstructure of a self- erecting crane necessary for telescoping the mast;
(3) all control and operating mechanisms for maladjustment. excessive wear of components, and contamination by lubricants or other foreign matter.
(4) documentation (see Section 29-14), chart, placards, and control markings for presence and legibility.
(5) motion-limiting devices for proper operation with the crane unloaded; each motion should be operated at slow speed with care exercised — daily, when in use.
(6) load-limiting devices for proper operation and accuracy of settings — monthly.
(7) all hydraulic hoses, particularly those that flex in normal operation.
(8) electrical apparatus for malfunctioning, signs of excessive deterioration, dirt, and moisture accumulation.
(9) hooks and latches for deformation, chemical damage, cracks, and wear. Refer to the manufacturer’s instructions or, in the absence thereof. ASME B30.1O.
(10) hydraulic system for leakage — daily, when in use.
29-2.1.4 Periodic Inspection
(a) Inspections of the crane shall be performed at intervals defined in para. 29-2.1.2(b)(2).
(b) These inspections shall include the requirements of para. 29-2.1.3 and, in addition, items such as, but not limited to, the following:
(1) deformed, cracked, or corroded members in the crane structure
(2) loose bolts or pins
(3) cracked or worn sheaves, sheave guards, and drums
(4) worn, cracked, or distorted parts such as pins, bearings, shafts, gears, rollers, locking and clamping devices, sprockets, and drive chains or belts
(5) excessIve wear on brakes, linings, pawls, and ratchets
(6) load, wind, and other indicators for inaccuracies outside the tolerances recommended by the manufacturer
(7) electrical apparatus for signs of deterioration in controllers, master switches, contacts, limiting devices, and controls
(8) crane hooks inspected in accordance with the manufacturer’s instructions or, in the absence thereof ASME B30.1O
(9) travel mechanisms for malfunction, excessive wear, or damage
(3) periodic inspection — a dated report of rope condition covering points of deterioration listed in para. 29-2.4.2(b)(2). If the rope is replaced, only that fact need be recorded at each periodic inspection. The most current report shall be kept on file.
29-2.4.4 Rope Maintenance
(a) Rope shall he stored in such a manner as to minimize damage or deterioration.
(b) Unreeling or uncoiling of rope shall be done as recommended by the rope manufacturer and with care to avoid kinking or inducing twist.
(c) Before cutting rope, seizings shall be placed on each side of the place where the rope is to be cut to prevent unlaying of the strands.
(d) During installation, avoid dragging the rope in dirt or around objects that will scrape, nick, crush, or induce sharp bends in It.
(e) Rope shall be lubricated in accordance with the rope manufacturer’s specifications.
(fJ Lubricant shall be of a type that does not hinder visual inspection.
(g) Those sections of rope that are located over sheaves or otherwise hidden during inspection and maintenance require special attention during lubrication. The objective of rope lubrication is to reduce internal friction and to inhibit corrosion.
ASME B30.29 pdf download
