1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-23549-9 SANS 20474-2:2010Edition 1ISO 20474-2:2008Edition 1SOUTH AFRICAN NATIONAL STANDARD Earth-moving machinery Safety Part 2: Requireme
4、nts for tractor-dozers This national standard is the identical implementation of ISO 20474-2:2008, and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428
5、 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 20474-2:2010 Edition 1 ISO 20474-2:2008 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 1034, Agricultural, earth-moving, forestry and construction equipment
6、and machinery, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in January 2010. Reference numberISO 20474-2:2008(E)ISO 2008INTERNATIONAL STANDARD ISO20474-2First edition2008-12-15Earth-moving machiner
7、y Safety Part 2: Requirements for tractor-dozers Engins de terrassement Scurit Partie 2: Exigences applicables aux bouteurs SANS 20474-2:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-2:2008(E) PDF disclaimer This PDF file may
8、contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the respon
9、sibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
10、 parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 A
11、ll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country
12、 of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedSANS 20474-2:2010This s tandard may only be used and printed by approved subscription
13、 and freemailing clients of the SABS .ISO 20474-2:2008(E) ISO 2008 All rights reserved iiiForeword ISO (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 ou
14、t through ISO technical committees. Each member body interested 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 co
15、llaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International
16、Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the element
17、s of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 20474-2 was prepared by Technical Committee ISO/TC 127, Earth-moving machinery, Subcommittee SC 2, Safety, ergonomics and general requirements. ISO 20474 consi
18、sts of the following parts, under the general title Earth-moving machinery Safety: Part 1: General requirements Part 2: Requirements for tractor-dozers Part 3: Requirements for loaders Part 4: Requirements for backhoe-loaders Part 5: Requirements for hydraulic excavators Part 6: Requirements for dum
19、pers Part 7: Requirements for scrapers Part 8: Requirements for graders Part 9: Requirements for pipelayers Part 10: Requirements for trenchers Part 11: Requirements for earth and landfill compactors Part 12: Requirements for cable excavators Part 13: Requirements for rollers Part 14: Information on
20、 national and regional provisions Technical Specification SANS 20474-2:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-2:2008(E) iv ISO 2008 All rights reservedIntroduction This document is a type-C standard as stated in ISO 121
21、00. The machinery concerned and the extent to which 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
22、 standard take precedence over the requirements of the other standards for machines that have been designed and built according to the requirements of this type-C standard. Provisions that are applicable for Australia, EU, Japan or the USA, and which are mandatory for compliance with specific govern
23、mental laws, directives or regulations in force in the particular country or region, are given in ISO/TS 20474-14. NOTE Other countries or regions may also have regional requirements. SANS 20474-2:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the
24、 SABS .INTERNATIONAL STANDARD ISO 20474-2:2008(E) ISO 2008 All rights reserved 1Earth-moving machinery Safety Part 2: Requirements for tractor-dozers 1 Scope This part of ISO 20474 gives the safety requirements specific to wheeled and crawler tractor-dozers as defined in ISO 6165, as well as those f
25、or rear-mounted winches on dozers. It is intended to be used in conjunction with ISO 20474-1, which specifies general safety requirements common to earth-moving machine families, and with ISO/TS 20474-14, which gives information on provisions that are mandatory in particular countries or regions. Th
26、e specific requirements given in this part of ISO 20474 take precedence over the general requirements of ISO 20474-1. This part of ISO 20474 deals with all significant hazards, hazardous situations and events relevant to the earth-moving machinery within its Scope when used as intended or under cond
27、itions of misuse reasonably foreseeable by the manufacturer (see also ISO/TS 20474-14). It specifies the appropriate technical measures for eliminating or reducing risks arising from significant hazards, hazardous situations or events during commissioning, operation and maintenance. It is not applic
28、able to machines manufactured before the date of its publication. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docum
29、ent (including any amendments) applies. ISO 3411:2007, Earth-moving machinery Physical dimensions of operators and minimum operator space envelope ISO 6165:2006, Earth-moving machinery Basic types Identification and terms and definitions ISO 6405-2, Earth-moving machinery Symbols for operator contro
30、ls and other displays Part 2: Specific symbols for machines, equipment and accessories ISO 6747, Earth-moving machinery Tractor-dozers Terminology and commercial specifications ISO 9244, Earth-moving machinery Machine safety labels General principles ISO 10968, Earth-moving machinery Operators contr
31、ols ISO 19472, Machinery for forestry Winches Dimensions, performance and safety ISO 20474-1:2008, Earth-moving machinery Safety Part 1: General requirements SANS 20474-2:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-2:2008(E)
32、 2 ISO 2008 All rights reserved3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 20474-1 and ISO 6747, and the following apply. 3.1 tractor-dozer dozer self-propelled crawler or wheeled machine with equipment having either dozing attachment which cuts,
33、 moves, and grades material through forward motion of the machine or a mounted attachment used to exert a push or a pull force ISO 6165:2006, definition 4.1 4 Safety requirements and/or protective measures 4.1 General Tractor-dozers shall comply with the safety requirements and/or protective measure
34、s of ISO 20474-1, in as far as those are not modified by the specific requirements of this clause. Suspension seats are not required. If suspension seats are provided as an option, for mandatory national and regional provisions, see ISO/TS 20474-14. 4.2 Operators seat For mandatory national and/or r
35、egional provisions, see ISO/TS 20474-14. 4.3 Rear window(s) For mandatory national and/or regional provisions, see ISO/TS 20474-14. 4.4 Rear-mounted winch 4.4.1 Mounting The means for securing a winch to the machine structure shall be designed to withstand a force of twice the maximum line-pull that
36、 can be exerted by the rope without permanent deformation. ISO 19472 should be used as guidance for design of the mounting system. 4.4.2 Controls The winch controls shall be located at the operators station and shall fulfil the requirements stated in ISO 10968. 4.4.3 Protection Where a rear-mounted
37、winch is fitted, provision shall be made to allow for operator protection in accordance with ISO 19472. SANS 20474-2:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-2:2008(E) ISO 2008 All rights reserved 3Tractor-dozers equipped
38、 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, or equivalent protection, between the operator and the winch. ISO 8084 should be used as guidance for design. The sc
39、reen width and height shall cover at least the rear window, for machines fitted with cab, the rear of the minimum space envelope, as specified in ISO 3411:2007, Figure 4, for machines without a cab. 5 Verification of safety requirements and/or protective measures ISO 20474-1:2008, Clause 5, shall ap
40、ply. 6 Information for use 6.1 Safety labels ISO 20474-1:2008, 6.1, shall apply, with the addition that a specific safety label according to ISO 9244, using a symbol according to ISO 6405-2, shall be used if a winch is fitted. 6.2 Operation manual ISO 20474-1:2008, 6.2, shall apply, with the additio
41、n that the manufacturer shall provide instruction for operation and safe use of winches, if fitted. 6.3 Machine marking ISO 20474-1:2008, 6.3, shall apply, with the addition that the maximum pull force of the winch, if fitted, shall be marked. SANS 20474-2:2010This s tandard may only be used and pri
42、nted by approved subscription and freemailing clients of the SABS .ISO 20474-2:2008(E) 4 ISO 2008 All rights reservedAnnex A (informative) Illustrations Figure A.1 Crawler tractor-dozer Figure A.2 Wheeled tractor-dozer Figure A.3 Crawler tractor-dozer with plough SANS 20474-2:2010This s tandard may
43、only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-2:2008(E) ISO 2008 All rights reserved 5Bibliography 1 ISO 6016, Earth-moving machinery Methods of measuring the masses of whole machines, their equipment and components 2 ISO 6746-1, Earth-moving machin
44、ery Definitions of dimensions and codes Part 1: Base machine 3 ISO 6746-2, Earth-moving machinery Definitions of dimensions and codes Part 2: Equipment and attachments 4 ISO 7096, Earth-moving machinery Laboratory evaluation of operator seat vibration 5 ISO 8084, Machinery for forestry Operator prot
45、ective structures Laboratory tests and performance requirements 6 ISO 12100-1:2003, Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology 7 ISO 12100-2:2003, Safety of machinery Basic concepts, general principles for design Part 2: Technical princip
46、les SABSSANS 20474-2:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .This page has been left blank intentionally SABS Standards Division The objective of the SABS Standards Division is to develop, promote and maintain South African Nation
47、al Standards. This objective is incorporated in the Standards Act, 2008 (Act No. 8 of 2008). Amendments and Revisions South African National Standards are updated by amendment or revision. Users of South African National Standards should ensure that they possess the latest amendments or editions. Th
48、e SABS continuously strives to improve the quality of its products and services and would therefore be grateful if anyone finding an inaccuracy or ambiguity while using this standard would inform the secretary of the technical committee responsible, the identity of which can be found in the foreword
49、. Tel: +27 (0) 12 428 6666 Fax: +27 (0) 12 428 6928 The SABS offers an individual notification service, which ensures that subscribers automatically receive notification regarding amendments and revisions to South African National Standards. Tel: +27 (0) 12 428 6883 Fax: +27 (0) 12 428 6928 E-mail: salessabs.co.za Buying Standards Contact the Sales Office for South African and international standards, which are avail
