ISO INTERNATIONAL STANDARD 20474-6 Second edition 2017-07 Earth-moving machinery Safety - Part 6: Requirements for dumpers Engins de terrassement- Sécurité - Partie 6: Exigences applicables aux tombereaux Reference number IS0 20474-6:2017(E) International Organization for Standardization @ IS0 2017 ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under I Not for Resale, 2017/9/8 08:59:44 ted without license from IHS IS020474-6:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017,Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 [email protected] www.iso.org ensee-ZHEJIANG INST OF STANDARDIzARoISQa7 - All rights reserved Not for Resale, 2017/9/8 08:59:4 etworking permitted without license from IHS IS0 20474-6:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions ..1 4 Safety requirements and protective measures 2 4.1 General .2 4.2 Dumpbody .3 4.2.1 Control device. 3 4.2.2 Body lowering .3 4.2.3 Body-down indicator. 3 4.2.4 Body support device. .3 4.2.5 Sticking load. 3 4.3 Retarder 3 4.4 Roll-over protective structures (ROPS) 3 4.5 Falling object protective structures (FOPS) 3 4.5.1 General .3 4.5.2 FOPSlevel. 4 4.5.3 Compact dumper .4 4.6 Operator station. 4 4.6.1 Cab .4 4.6.2 Operator's seat. 4 4.6.3 Compactdumperswitha standingoperatorposition .4 4.7 Steering system .5 4.7.1 General .5 4.7.2 Steering controls for machines with swivelling seats 5 4.7.3 Controls for steering and driving of machines with turnable upper structure. 5 5 Information for use .5 Annex A (informative) Illustrations .6 Bibliography 8 iii ee=ZHEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS under I cense with ISt ithout license from IHS Not for Resale, 2017/9/8 08:59:44