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 978-0-626-23558-1 SANS 20474-7:2010Edition 1ISO 20474-7:2008Edition 1SOUTH AFRICAN NATIONAL STANDARD Earth-moving machinery Safety Part 7: Requireme
4、nts for scrapers This national standard is the identical implementation of ISO 20474-7:2008, 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 7911
5、Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 20474-7:2010 Edition 1 ISO 20474-7:2008 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 and ma
6、chinery, 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 20474-7:2008(E)ISO 2008INTERNATIONAL STANDARD ISO20474-7First edition2008-12-15Earth-moving machinery Safe
7、ty Part 7: Requirements for scrapers Engins de terrassement Scurit Partie 7: Exigences applicables aux dcapeuses SANS 20474-7:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-7:2008(E) PDF disclaimer This PDF file may contain emb
8、edded 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 responsibility of
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10、 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 All rights r
11、eserved. 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 of the req
12、uester. 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 20474-7:2010This s tandard may only be used and printed by approved subscription and freema
13、iling clients of the SABS .ISO 20474-7:2008(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 out through I
14、SO 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 collaborates
15、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 Standards.
16、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 elements of this d
17、ocument may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 20474-7 was prepared by Technical Committee ISO/TC 127, Earth-moving machinery, Subcommittee SC 2, Safety, ergonomics and general requirements. ISO 20474 consists of the
18、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 dumpers Part 7
19、: 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 national a
20、nd regional provisions Technical Specification SANS 20474-7:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-7:2008(E) iv ISO 2008 All rights reservedIntroduction This document is a type-C standard as stated in ISO 12100. The mac
21、hinery 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 standard t
22、ake 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 governmental laws
23、, 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 20474-7:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .INTE
24、RNATIONAL STANDARD ISO 20474-7:2008(E) ISO 2008 All rights reserved 1Earth-moving machinery Safety Part 7: Requirements for scrapers 1 Scope This part of ISO 20474 gives the safety requirements specific to wheeled and crawler scrapers, except for towed scrapers, as defined in ISO 6165. It is intende
25、d 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. The specific requirements given in this part of IS
26、O 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 conditions of misuse reasonably foreseeable by the m
27、anufacturer (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 applicable to machines manufactured before the date of
28、 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 document (including any amendments) applies. ISO 6165
29、, Earth-moving machinery Basic types Identification and terms and definitions ISO 6393, Acoustics Earth-moving machinery Determination of sound power level Stationary test conditions ISO 6394, Earth-moving machinery Determination of emission sound pressure level at operators position Stationary test
30、 conditions ISO 7096:2000, Earth-moving machinery Laboratory evaluation of operator seat vibration ISO 7133, Earth-moving machinery Tractor-scrapers Terminology and commercial specifications ISO 10268, Earth-moving machinery Retarders for dumpers and tractor-scrapers Performance tests ISO 20474-1:20
31、08, Earth-moving machinery Safety Part 1: General requirements SANS 20474-7:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-7:2008(E) 2 ISO 2008 All rights reserved3 Terms and definitions For the purposes of this document, the t
32、erms and definitions given in ISO 20474-1 and ISO 7133, and the following, apply. 3.1 scraper self-propelled or towed crawler or wheeled machine, which has a bowl with a cutting edge positioned between the axles and which cuts, loads, transports, discharges and spreads material through a forward mot
33、ion NOTE A powered mechanism (elevator) fixed to the scraper bowl can assist the loading through a forward motion. 3.2 towed scraper non-self-propelled scraper propelled by a towing machine on which the operators station is located 4 Safety requirements and/or protective measures 4.1 General Scraper
34、s shall comply with the safety requirements and/or protective measures of ISO 20474-1, in as far as those are not modified by the specific requirements of this clause. 4.2 Operators seat ISO 20474-1:2008, 4.4.1, shall apply, with the addition that the seat shall meet ISO 7096:2000, input spectral cl
35、ass EM2 for scrapers without axle or frame suspension. 4.3 Retarder If a retarder system is installed it shall meet the requirements of ISO 10268. 4.4 Articulated frame lock ISO 20474-1:2008, 4.14.5 is not applicable to scrapers. 4.5 Towing device ISO 20474-1:2008, 4.15.5, shall apply with the excep
36、tion that attachment points (push plates, arc equipment, etc.) on scrapers that are present only to permit two scrapers to assist each other in loading, are not deemed to be towing devices according to ISO 20474-1:2008, 4.15.5. 4.6 Noise 4.6.1 Sound power level ISO 20474-1:2008, 4.13.2.1, shall appl
37、y and the sound power level for scrapers shall be measured in accordance with ISO 6393. 4.6.2 Emission sound pressure level at operators station ISO 20474-1:2008, 4.13.2.2, shall apply and the emission sound pressure level at the operators station for scrapers shall be measured in accordance with IS
38、O 6394. SANS 20474-7:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-7:2008(E) ISO 2008 All rights reserved 35 Verification of safety requirements and/or protective measures ISO 20474-1:2008, Clause 5, shall apply. 6 Information
39、 for use ISO 20474-1:2008, Clause 6, shall apply with the following additions to the operators manual (6.2): instructions for the use of push-blades; instructions for use and maintenance for elevator and auger. SANS 20474-7:2010This s tandard may only be used and printed by approved subscription and
40、 freemailing clients of the SABS .ISO 20474-7:2008(E) 4 ISO 2008 All rights reservedAnnex A (informative) Illustrations Figure A.1 Wheeled scraper without elevator Figure A.2 Wheeled scraper with elevator Figure A.3 Wheeled scraper with two engines SANS 20474-7:2010This s tandard may only be used an
41、d printed by approved subscription and freemailing clients of the SABS .ISO 20474-7:2008(E) ISO 2008 All rights reserved 5Figure A.4 Crawler scraper SANS 20474-7:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 20474-7:2008(E) 6 ISO 20
42、08 All rights reservedBibliography 1 ISO 12100-1:2003, Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology 2 ISO 12100-2:2003, Safety of machinery Basic concepts, general principles for design Part 2: Technical principles SANS 20474-7:2010 SABSThi
43、s s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SABS Standards Division The objective of the SABS Standards Division is to develop, promote and maintain South African National Standards. This objective is incorporated in the Standards Act, 2008
44、(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. The SABS continuously strives to improve the quality of its products and s
45、ervices 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. Tel: +27 (0) 12 428 6666 Fax: +27 (0) 12 428 6928 The SABS offers an i
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48、andards Information Centre provides a wide range of standards-related information on both national and international standards, and is the official WTO/TBT enquiry point for South Africa. The Centre also offers an individual updating service called INFOPLUS, which ensures that subscribers automatica
49、lly receive notification regarding amendments to, and revisions of, international standards. Tel: +27 (0) 12 428 6666 Fax: +27 (0) 12 428 6928 E-mail: infosabs.co.za Copyright The copyright in a South African National Standard or any other publication published by the SABS Standards Division vests in the SABS. Unless exemption has been granted, no extract may be reproduced, stored in a retrieval system or transmitted in any form or by
