1、STD-CSA ISO-M787.3-CAN/CSA-FREN 1997 m 18750b8 05810bb 50T = National Standard of Canada CA N/CSA-M789.3-97 (I SO 789-3 : 1 993) I I I International Standard IS0 789-3:1993 (second edition, 1993-08-15) has been adopted without modification as CSA Standard CAN/CSA M789.3-97, which has been approved a
2、s a National Standard of Canada by the Standards Council of Canada ISSN 031 7-5669 February 1997 Agricultural tractors - Test procedures - Part 3: Turning and clearance diameters Tracteurs agricoles - Mthodes dessai - Partie 3: Diamtres de braquage e? de dgagement Reference number IS0 789-311 993(E)
3、 LArroclation canadlrnne de nomallsation (CSA), sous les auspices de laquelle cette Norme nationale a t prpare, a reu ses lettres patentes en 1919 et son accrditaton au sein du Systme de normes nationales par le Conseil canadien des normes en 1973. Association daffiliation libre, sans but lucratif n
4、i pouvoir de rglementation, elle se consacre llaboration de normes et la certification. Les normes CSA refltent le consensus de producteurs et dusagers de partout au pays, au nombre desquels se trouvent des fabricants, des consommateurs, des dtaillants et des repdsentants de syndicats, de corps prof
5、essionnels et dagences gouvernementales. Lutilisation des normes CSA est trs rpandue dans lindustrie et le commerce, et leur adoption divers ordres de lgislation, tant municipal et provincial que fdral, est chose courante, particulirement dans les domaines de la sant, de la scurit, du btiment. de la
6、 construction et de lenvironnement. Les Canadiens gun bout lautre du pays tmoignent de leur appui au travail de normalisation men par la CSA en participant bnvolement aux travaux des comits de la CSA et en appuyant ses objectifs par leurs cotisations de membres de soutien. Les quelque 7000 volontair
7、es faisant partie des comits et les 2000 membres de soutien constituent lensemble des membres de la CSA parmi lesquels ses administrateurs sont choisis. Les cotisations des membres de soutien repdsentent une source importante de revenu pour les services de soutien B la normalisation volontaire. LAss
8、ociation offre des services de certification et de mise lessai qui appuient et compltent ses activits dans le domaine de llaboration de normes. De manibre assurer lintgrit de son processus de certification, lAssociation procde de faon rgulibre et continue lexamen et linspection des produits portant
9、la marque CSA. Outre son sige social et ses laboratoires Etobicoke, la CSA possde des bureaux rgionaux dans des centres vitaux partout au Canada, de mme que des agences dinspection et dessai dans huit pays. Depuis 1919, lAssociation a pariait les connaissances techniques qui lui permettent de rempli
10、r sa mission dentreprise, savoir la CSA est un organisme de services indpendant dont la mission est doffrir une tribune libre et efficace pour la ralisation dactivits facilitant lchange de biens et de services par lintermdiaire de services de normalisation de certification et autres, pour rpondre au
11、x besoins de nos dients, tant lchelle nationale quinternationale. The Canadian Standards Assoclatlon (CSA), under whose auspices this National Standard has been produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for
12、-profit, nonstatutory, voluntary membership association engaged in standards development and certilicalion activities. CSA standards reflect a national consensus of producers and users -including manufacturers, consumers, retailers, unions and professional organizations, and governmental agencies. T
13、he standards are used widely by industry and commerce and often adopted by municipal, provincial, and federal governments in their regulations, particularly in the fields of health, safety, building and construction, and the environment. Individuals, companies, and associations across Canada indicat
14、e their support for CSAs standards development by volunteering their time and skills to CSA Committee work and supporting the Associations objectives through sustaining memberships. The mora than 7WO committee volunteers and the 2000sustaining memberships together form CSAs total membership from whi
15、ch its Directors are chosen. Sustaining memberships represent a maior source of income for CSAs siandards development activities. The Association offers certification and testing services in support of and as an extension to its standards development activities. To ensure the integrity of its certif
16、ication process, the Association regularly and continually audits and inspects products that bear the CSA Mark. In adddion to its head office and laboratory complex in Etobicoke, CSA has regional branch offices in major centres across Canada and inspection and testing agencies in eight countries. Si
17、nce 1919, the Association has developed the necessary expertise to meet its corporate mission: CSA is an independent service organization whose mission is to provide an open and effective forum for activities facilitating the exchange of goods and services through the use of standards, certification
18、 and related services to meet national and international needs. Pour plus amples renseignements sur les services de ia CSA, sadresser B For further information on CSA services, write to Association canadienne de normalition Canadian Standards Association 178, boulevard Rexdale 178 Rexdale Boulevard
19、Etobicoke, Ontario, M9W 1R3 Canada La Conseil canadien des nonne8 est lorganisme de coordination du Systme de normes nationales, une fdration dorganismes indpendants et autonomes qui travailient au dveloppement et lamlioration de la normalisation volontaire dans lintr(Lt national. Les principaux but
20、s du Conseil sont dencourager et de pmmowoir la normalisation volontaire comme moyen damliorer lconomie nationale, damliorer la sant, la scurit et le bien-tre du public, daider et de protger le consommateur, de faciiter le commerce national et international et de favoriser la coopration internationa
21、le dans le domaine de la normalisation. nombre de personnes comptentes dont les intrts runis forment, au degr le plus Blev possible. une reprsentation quilibr6e des producteurs, utilisateurs, consommateurs et autres personnes intresses, selon le domaine envisag. II sagit gnralement dune norme qui pe
22、ut apporter une contribution apprciible, en temps opportun, Iintrdt national. Lapprobation ne pork pas sur laspect technique de la norme ; cet aspect demeure la responsabilit de iorganisme rdacteur de normes accrdit. priodiques : cest pourquoi il est recommand aux utilisateurs de se procurer ldition
23、 la plus rcente de la norme auprs de lorganisme qui la prpare. The *ndirdi Council of Canada is the coordinating body of the National Standards system, a federation of independent, autonomous organizations working towards lhe further development and improvement of voluntary standardization in the na
24、tional interest. The principal objects of lhe Council are to foster and promote voluntary standardization as a means of advancing the national economy, benefiting the health, safety, and welfare of the public, assisting and protecting the consumer, facilitating domestic and international trade, and
25、furthering international cooperation in the field of standards. A National Standard of Canada is a standard which has been approved by lhe Standards Council of Canada and one which reflects a reasonable agreement among the views of a number of capable individuals whose collective interests provide t
26、o the greabst practicable extent a balance of representation of producers, users, consumers, and others with relevant interests, as may be appropriate to the subject in hand. It nomially is a standard which is capable of making a significant and timely contribution to the national interest. Approval
27、 of a standard as a National Standard of Canada indicates that a standard Conforms to the criteria and procedures established by the Standards Council of Canada. Approval does not refer to the technical content of the standard; this remains the continuing responsibility of the accredited standards-d
28、evelopment organization. Those who have a need to apply standards are encouraged to use National Standards of Canada whenever practicable. These standards are subject to periodic review; therefore, users are cautioned to obtain the latest edition from the organization preparing the standard. Une Nor
29、me nationaie du Canada est une norme, approuve par le Conseil canadien des normes, qui reflte une entente raisonnable parmi les points de vue dun certain Lapprobation dune norme en tant que Norme nationale du Canada indique quelle est conforme aux mthodes et critres tablis par le Conseil canadien de
30、s normes. II est recommand aux personnes qui ont besdn de normes de se servir des Normes nationales du Canada lorsque la chose est possible. Ces normes font lobjet dexamens I La responsabilit dapprouver les Normes nationales du Canada incombe au * lhe responsibility for approving National Standards
31、of Canada rests with the Conseil canadien des normes Standards Council of Canada 45, rue OConnor, Bureau 1200 * 45 OConnor Street, Suite 1200 Ottawa, Ontario, KIP 6N7 Canada Les nomes nationales du Canada sont publies en versions franaise et anglaise. Nationai Standards of Canada are published in En
32、glish and French. Bien que le but premier vis par cene nom soif nond sous sa bngue Domaine dapplication, il est important de retenir quil incombe lutilisateur de juger si la norme convient ses besoins pariculim. Although lhe intended primary application of this Srandani is sfafed in its Scope, it is
33、 important to note thaf if remains Ihe respnsibflity of the user to judge its suitability for fheir partiwiar purpose. STD-CSA ISO-M789-3-CAN/CSA-FREN 1997 L8750b 0581Ob8 382 Agricultural tractors - Test procedures - Part 3: Turning and clearance diameters CAN/CSA- M789.3- 97 CAN/CSA-M789.3-97 Agrcu
34、ZhrraZ tractors - Test procedures - Part 3: Turning and clearance diameters CSA Preface This is the first edition of CSA Standard CAN/CSA-M789.3, Agricultural tractors - Test procedures - Part 3: Turning and clearance diameters, which is an adoption without modification of the identically titled IS0
35、 (international Organization for Standardization) Standard 789-3:1993 (second edition, 1993-08-1 5), developed by the IS0 Technical Committee iSO/TC 23. Agricultural Machinery under the jurisdiction of the Standards Steering Committee on Occupational Health and Safety, and has been formally approved
36、 by the Technical Committee. A list of the members of these Committees is available upon request. This Standard has been approved as a National Standard of Canada by the Standards Council of Canada. This Standard was reviewed for Canadian adoption by the CSA Technical Committee on February 7997 O Ca
37、nadian Standards Association - 1997. All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior permission of the publisher. IS0 material is reprinted with permission. Inquiries regarding this National Standard of
38、 Canada should be addressed to Canadian Standards Association, 1 78 Rexdale Boulevard, Etobicoke, Ontario, Canada, M9 W 1 R3. CSA gratefully acknowledges the support of Agricuiture and Agricuiture et Agri-Food Canada Agroalimeniaire Canada February 7 997 - CSA/J I N T E R NAT I O NA L STANDARD IS0 7
39、89-3 Second edition 1993-08-1 5 Agricultural tractors - Test procedures - Part 3: Turning and clearance diameters Tracteurs agricoles - Mthodes dessai - Partie 3: Diamtres de braquage et de dgagement Reference number IS0 789-3: 1993(E) IS0 789-3:1993(E) Foreword IS0 (the International Organization f
40、or Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has th
41、e right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft In
42、ternational 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. International Standard IS0 789-3 was prepared by Technical Committee ISO/TC 23, T
43、ractors and machinery for agriculture and forestry, Sub- Committee SC 2, Common tests. IS0 789 consists of the following parts, under the general title Agricultural tractors - Test procedures: - Part I: Power tests for power rake-off - Part 2: Rear three-poinr linkage lifting capacity - Part 3: Turn
44、ing and clearance diameters - Part 4: Measurement of exhaust smoke - Part 5: Partial power PTO - Non-mechanically transmitted power - Part 6: Centre of gravity - Part 7: Axle power determination - Part 8: Engine air cleaner - Part 9: Power tests for drawbar O IS0 1993 All rights resewed. No part of
45、this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without per- mission in writing from the publisher. Intemational Organization for Standardization Case Postale 56 CH-121 1 Genve 20 Switzerland II - STDOCSA ISO
46、-M787-3-CAN/CSA-FREN 1777 3875068 0583072 777 W IS0 789-3:1993IE) - Part 1 O: Measurement of hydraulic power - Tractor/impkment interface - Pan 17: Steering capability - Wheeled tractors Annex A forms an integral patt of this part of IS0 789. . 111 STDmCSA ISO-M787.3-CAN/CSA-FREN 1797 1875068 058307
47、2 803 INTERNATIONAL STANDARD IS0 789-3:19931E) Agricultural tractors - Test procedures - Part 3: Turning and clearance diameters 1 Scope This part of IS0 789 specifies a method of determin- ing the turning and clearance diameters of wheeled agricultural tractors. It applies to wheeled agricultural t
48、ractors having at least two axles fitted with pneumatic tyres. 2 Definitions For the purposes of this part of IS0 789, the following definitions appiy. 2.1 agricuitural tractor: Self-propelled wheeled machine having at least two axles, particularly de signed to pull, push, carry and operate implemen
49、ts used for agricultural work (including forestry work), which may be provided with a detachable loading platform. 2.2 track (tread) of wheeled tractor: Distance at ground level between two vertical planes passing through the centreline of ground contact of the tyres parallel to the median plane of the tractor with the wheels in the straight ahead position. (See figure 1 .I In th
