1、Earth-moving machinery SafetyPart 2: Requirements for dozersBS ISO 204742:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017Earth-moving machinery Safety Part 2: Requirements for dozersEngins de terrassement Scurit Partie 2: Exigences applicables aux boute
2、ursINTERNATIONAL STANDARDISO20474-2Second edition2017-07Reference numberISO 20474-2:2017(E)National forewordThis British Standard is the UK implementation of ISO 204742:2017.The UK participation in its preparation was entrusted to Technical Committee B/513/1, Earth moving machinery (International).A
3、 list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standar
4、ds Limited 2017ISBN 978 0 580 81687 1ICS 53.100Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2017.Amendments/corrigenda issued since publicationDate Te
5、xt affectedBRITISH STANDARDBS ISO 204742:2017 ISO 2017Earth-moving machinery Safety Part 2: Requirements for dozersEngins de terrassement Scurit Partie 2: Exigences applicables aux bouteursINTERNATIONAL STANDARDISO20474-2Second edition2017-07Reference numberISO 20474-2:2017(E)BS ISO 204742:2017ISO 2
6、0474-2:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopyi
7、ng, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 1
8、1Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 204742:2017ISO 20474-2:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in a
9、ny form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blan
10、donnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgISO 20474-2:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Safety requirements and protective measures . 24.1 General . 24.2 Operato
11、rs seat 24.3 Rear windows 24.4 Rear-mounted winch . 24.4.1 Mounting . 24.4.2 Controls 24.4.3 Protection . 25 Information for use 35.1 Safety labels . 35.2 Operators manual 35.3 Machine marking 3Annex A (informative) Illustrations. 4Bibliography 6 ISO 2017 All rights reserved iiiContents PageBS ISO 2
12、04742:2017ISO 20474-2:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body intereste
13、d in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Com
14、mission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents
15、should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible
16、for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for
17、the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in
18、 the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .htmlThis document was prepared by Technical Committee ISO/TC 127, Earth-moving machinery, Subcommittee SC 2, Safety, ergonomics and general requirements.This second edition cancels and replaces the first edit
19、ion (ISO 20474-2:2008), which has been technically revised with the following changes: the term tractor-dozer has been changed to dozer; references to national and regional provisions in the withdrawn ISO/TS 20474-14 have been deleted; safety requirements and protective measures have been added.It i
20、s intended to be used in conjunction with ISO 20474-1.A list of all parts in the ISO 20474 series, published under the general title, Earth-moving machinery Safety, can be found on the ISO website.iv ISO 2017 All rights reservedBS ISO 204742:2017ISO 20474-2:2017(E)ForewordISO (the International Orga
21、nization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been establis
22、hed has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization
23、.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with th
24、e editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any pa
25、tent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.
26、For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: ww
27、w .iso .org/ iso/ foreword .htmlThis document was prepared by Technical Committee ISO/TC 127, Earth-moving machinery, Subcommittee SC 2, Safety, ergonomics and general requirements.This second edition cancels and replaces the first edition (ISO 20474-2:2008), which has been technically revised with
28、the following changes: the term tractor-dozer has been changed to dozer; references to national and regional provisions in the withdrawn ISO/TS 20474-14 have been deleted; safety requirements and protective measures have been added.It is intended to be used in conjunction with ISO 20474-1.A list of
29、all parts in the ISO 20474 series, published under the general title, Earth-moving machinery Safety, can be found on the ISO website.iv ISO 2017 All rights reserved ISO 20474-2:2017(E)IntroductionThis document is a type-C standard as stated in ISO 12100.The machinery concerned and the extent to whic
30、h hazards, hazardous situations or hazardous events are covered are indicated in the Scope of this document.When requirements of this type-C standard are different from those which are stated in type-A or B standards, the requirements of this type-C standard take precedence over the requirements of
31、the other standards for machines that have been designed and built according to the requirements of this type-C standard.ISO 20474 provides acceptable safety requirements for earth-moving machinery. This standard does not necessarily provide requirements to meet all national and regional regulatory
32、provisions, e.g. Japan does not allow object handling with earth-moving machinery. ISO 2017 All rights reserved vBS ISO 204742:2017BS ISO 204742:2017Earth-moving machinery Safety Part 2: Requirements for dozers1 ScopeThis document gives the safety requirements specific to wheeled dozers and crawler
33、dozers as defined in ISO 6165 as well as for the rear-mounted winches on dozers. It is intended to be used in conjunction with ISO 20474-1, which specifies general safety requirements common to two or more earth-moving machine families. The specific requirements given in this document take precedenc
34、e over the general requirements of ISO 20474-1.This document deals with all significant hazards, hazardous situations and events relevant to the earth-moving machinery within its scope (see ISO 20474-1:2017, Annex A) when used as intended or under conditions of misuse reasonably foreseeable by the m
35、anufacturer. It specifies the appropriate technical measures for eliminating or reducing risks arising from relevant hazards, hazardous situations or events during commissioning, operation and maintenance.This document is not applicable to machines manufactured before the date of its publication.2 N
36、ormative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any
37、 amendments) applies.ISO 3411:2007, Earth-moving machinery Physical dimensions of operators and minimum operator space envelopeISO 6165, Earth-moving machinery Basic types Identification and terms and definitionsISO 6405-2, Earth-moving machinery Symbols for operator controls and other displays Part
38、 2: Specific symbols for machines, equipment and accessoriesISO 6747, Earth-moving machinery Dozers Terminology and commercial specificationsISO 7096, Earth-moving machinery Laboratory evaluation of operator seat vibrationISO 9244, Earth-moving machinery Machine safety labels General principlesISO 1
39、0968, Earth-moving machinery Operators controlsISO 19472, Machinery for forestry Winches Dimensions, performance and safetyISO 20474-1:2017, Earth-moving machinery Safety Part 1: General requirements3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 2047
40、4-1, ISO 6165 and ISO 6747, and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: ISO Online browsing platform: available at h t t p :/ www .iso .org/ obpINTERNATIONAL STANDARD ISO 20474-2:2017(E) ISO 2017 All rights reserved 1B
41、S ISO 204742:2017ISO 20474-2:2017(E) IEC Electropedia: available at h t t p :/ www .electropedia .org/ 3.1dozerself-propelled crawler or wheeled machine with equipment having either dozing attachment which cuts, moves, and grades material through forward motion of the machine or a mounted attachment
42、 used to exert a push or a pull forceSOURCE: ISO 6165:2012, 4.14 Safety requirements and protective measures4.1 GeneralDozers shall comply with the safety requirements and protective measures of ISO 20474-1, in as far as those are not modified by the specific requirements of this clause.4.2 Operator
43、s seatISO 20474-1:2017, 4.4.1.4 applies with the following addition: crawler dozers with an operating mass greater than 50 000 kg shall be in accordance with of ISO 7096:2008, class EM 6.4.3 Rear windowsISO 20474-1:2017, 4.3.2.7 and 4.3.2.9 apply for rear windows, with the following additional provi
44、sions: arrangement to defrost the rear windows should be made; the rear windows should be fitted with a motorised wipers and washer.4.4 Rear-mounted winch4.4.1 MountingThe means for securing a winch to the machine structure shall be designed to withstand a force of twice the maximum line-pull that c
45、an be exerted by the rope without permanent deformation.ISO 19472 should be used as guidance for the design of the mounting system.4.4.2 ControlsThe winch controls shall be located at the operators station and shall fulfil the requirements stated in ISO 10968.4.4.3 ProtectionWhere a rear-mounted win
46、ch is fitted, provision shall be made to allow for operator protection in accordance with ISO 19472.Dozers equipped with a rear winch shall be equipped with an adequately sized protective screen or screens of a steel wire of minimum diameter 6 mm woven wire mesh and maximum opening of 45 mm 45 mm, o
47、r equivalent protection, between the operator and the winch.ISO 8084 should be used as guidance for design.2 ISO 2017 All rights reservedBS ISO 204742:2017ISO 20474-2:2017(E) IEC Electropedia: available at h t t p :/ www .electropedia .org/ 3.1dozerself-propelled crawler or wheeled machine with equi
48、pment having either dozing attachment which cuts, moves, and grades material through forward motion of the machine or a mounted attachment used to exert a push or a pull forceSOURCE: ISO 6165:2012, 4.14 Safety requirements and protective measures4.1 GeneralDozers shall comply with the safety require
49、ments and protective measures of ISO 20474-1, in as far as those are not modified by the specific requirements of this clause.4.2 Operators seatISO 20474-1:2017, 4.4.1.4 applies with the following addition: crawler dozers with an operating mass greater than 50 000 kg shall be in accordance with of ISO 7096:2008, class EM 6.4.3 Rear windowsISO 20474-1:2017, 4.3.2.7 and 4.3.2.9 apply for rear windows, with the following additional provisions: arrangement to
