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1、AS 1418.3/Amdt 2/2002-06-17STANDARDS AUSTRALIAAmendment No. 2 toAS 1418.31997Cranes (including hoists and winches)Part 3: Bridge, gantry and portal cranes (including container cranes)REVISED TEXTThe 1997 edition of AS 1418.3 is amended as follows; the amendments should be inserted in the appropriate
2、 places.SUMMARY: This Amendment applies to the Title, Clauses 1.4, 3.3.3(a), 3.3.6 and 5.1 and Appendix D.Published on 17 June 2002.AMDT No. 2JUNE2002AMDT No. 2JUNE2002AMDT No. 2JUNE2002TitleReplace the existing Title with the following: Cranes, hoists and winchesPart 3: Bridge, gantry, portal (incl
3、uding container cranes) and jib cranesPage 6 Clause 1.4Add the following after designation number 2550.1:2670 Evaluation of human exposure to whole-body vibration (all parts)Page 7 Clause 3.3.3(a)Replace existing text with the following:(a)The vibration frequency of the crane structure, in any horiz
4、ontal direction, shall be not less than 2.4 Hz. The vibration frequency shall be calculated using the higher of the lateral deflection values calculated according to AS 1418.1.For cranes equipped with an operators cabin, the limits of vibration amplitude at the centre of gravity of the cabin are dep
5、endent on the sustained frequency of vibrations and the design shall be in accordance with AS 2670.The vibration frequency in the first mode of vibration of a flexural element shall be calculated in a rational manner.For a girder, the following simplified equation for fundamental natural frequency m
6、ay be used:wheref = 16dF = natural frequency, in hertzd = vertical (or horizontal) deflection, in millimetres. . . 3.3.3Licensed to Patrick Stevedores Holding on 12 May 2003. 1 user personal user licence only. Storage, distribution or use on network prohibited.ISBN 0 7337 3795 1In the above equation
7、, the value of d for cantilever cranes shall include the flexure of the boom and the support posts.Licensed to Patrick Stevedores Holding on 12 May 2003. 1 user personal user licence only. Storage, distribution or use on network prohibited.AMDT No. 2JUNE2002AMDT No. 2JUNE2002AMDT No. 2JUNE2002Page 7
8、 Clause 3.3.6 (new)Add the following new Clause 3.3.6:3.3.6 Jib cranesThe calculated deflection of jib cranes shall not exceed L/300 where L is the length of the jib plus length of freestanding post.Where the deflection is measured in situ by test methods, the permissible deflection may be increased
9、 as follows:(a)Where the jib crane is mounted on a rigid support, 50% to allow for such effects as deformation of the anchoring bolts, baseplate, slew rings or other bearings and fasteners.(b)Where the jib crane is mounted on a flexible support, 100% to allow for such effects as deformation of the a
10、nchoring bolts, baseplate, slew rings or other bearings and fasteners, and deflection of the supporting structure.Page 8 Clause 5.1Delete Note and replace with the following:1See also Appendix D for illustrations of typical crane drive mechanisms.2Cranes are designed and built for a limited rated li
11、fe, which may be extended or reduced depending upon their usage. Devices are available to enable actual recording of rated life of the crane to enable assessment of the remaining rated life. Guidance on this is given in ISO 12482.1.Page 39 Appendix D (new)Add the following new Appendix D:APPENDIX DT
12、YPICAL CRANE DRIVE DIAGRAMS(Informative)Crane drive diagramsTypical denomination for running gear and drive systems(see Note)No. of wheel pairsSynchronizedRemarksFFFLTotalNWor coupledNSEFFEFL2EFFEFL2EFFEFL2Additional forced slip may occur between wheels on one crane due todifferences in wheel diamet
13、ersEFFEFLEFFEFLDepends on wheel load distributionAdditional details can be found in aDemag publication by Dr Hanover onCrane Travel BehaviourWFF22WFF21WFF22In addition to forced slip mentioned above, forcedslip can also occur betweenwheels on opposite sides due to their diameter differencesWFFWFL22F
14、FWFL21The dotted lines representelectrical connection equivalent to the central drive, as long as the wheel torque does not exceed the motor torqueLicensed to Patrick Stevedores Holding on 12 May 2003. 1 user personal user licence only. Storage, distribution or use on network prohibited.EFFEFL4Licen
15、sed to Patrick Stevedores Holding on 12 May 2003. 1 user personal user licence only. Storage, distribution or use on network prohibited.NOTE: Letters used in typical denominations have the following meaning:W = pair of long-travel wheels that are mechanically or electrically coupledE = pair of long-travel wheels that are independently drivenF = fixed-bearing supports of the long-travel wheel, not allowing side movement of crane structureL = loose-bearing support of the long-travel wheel, allowing side movement of crane structure