1、BRITISH STANDARD BS ISO 6489-1:2001 Agricultural vehicles Mechanical connections between towed and towing vehicles Part 1: Dimensions of hitch-hooks ICS 65.060.10 BS ISO 6489-1:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committe
2、e, was published under the authority of the Standards Policy and Strategy Committee on 30 August 2002 BSI 30 August 2002 ISBN 0 580 40319 X National foreword This British Standard reproduces verbatim ISO 6489-1:2001 and implements it as the UK national standard. It supersedes BS 6108-1:1993 which is
3、 withdrawn. The UK participation in its preparation was entrusted to Technical Committee AGE/6, Agricultural tractors and forestry machinery, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The Briti
4、sh Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This pub
5、lication does not purport to include all the necessary provisions of a contract. Users are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible interna
6、tional/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO ti
7、tle page, pages ii and iii, a blank page, pages 1 to 4, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsReference number ISO 6489-1:2001(E) INTERNATIONAL ST
8、ANDARD ISO 6489-1 Third edition 2001-01-15 Agricultural vehicles Mechanical connections between towed and towing vehicles Part 1: Dimensions of hitch-hooks Vhicules agricoles Liaisons mcaniques entre vhicules remorqueurs et vhicules remorqus Partie 1: Dimensions des crochets dattelage BSISO64891:200
9、1BSISO64891:2001iiISO -98461:(1002)E ISO 1002 All rights rsedevre iii Foreword 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 ISO techni
10、cal 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 closely w
11、ith 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 3. Draft International Standards adopted by the technical committees are circulated to th
12、e 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 part of ISO 6489 may be the subject of patent rights. ISO shall not be held responsible
13、 for identifying any or all such patent rights. International Standard ISO 6489-1 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 4, Tractors. This third edition cancels and replaces the second edition (ISO 6489-1:1991), which has b
14、een technically revised. ISO 6489 consists of the following parts, under the general title Agricultural vehicles Mechanical connections between towed and towing vehicles: Part 1: Dimensions of hitch-hooks Part 2: Clevis-type dimensions Part 3: Tractor drawbar Part 4: Bolt-type dimensions BSISO64891:
15、2001iiiINTENRATIONAL TSANDADR ISO -98461:(1002)E ISO 1002 All rights rsedevre 1 Agricultural vehicles Mechanical connections between towed and towing vehicles Part 1: Dimensions of hitch-hooks 1 Scope This part of ISO 6489 specifies the dimensional requirements for hitch-hooks used in the attachment
16、 to agricultural towing vehicles of towed, non-balanced trailers and implements equipped with a ring specified in ISO 20019. Its purpose is to ensure the interchangeability of the mechanical connections on agricultural towing vehicles. This part of ISO 6489-1 is applicable only in those cases where
17、the vertical static load does not exceed 30 kN. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 6489. For dated references, subsequent amendments to, or revisions of, any of these publication
18、s do not apply. However, parties to agreements based on this part of ISO 6489 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Membe
19、rs of ISO and IEC maintain registers of currently valid International Standards. ISO 500: 1) , Agricultural tractors Rear-mounted power take-offs Types 1, 2, 3 and 4. ISO 20019: 2) , Agricultural vehicles Mechanical connections on towed vehicles Dimensions for hitch rings. 3 Dimensions 3.1 General T
20、he location of the keeper and the dimensions of the hitch-hook shall be in accordance with Figures 1 to 3. The keeper shall be contained within the maximum metal outline. No part of the hitch-hook shall lie outside the radius marked R 67 max. between points X and Y (maximum metal condition) in Figur
21、e 1. The manufacturer shall be responsible for both the design and manufacturing quality of the hitch-hook assembly. In order to prevent unintentional uncoupling from the hitch ring at the maximum design load, the distance between the hitch-hook tip and the keeper shall not exceed 10 mm. 1) To be pu
22、blished. (Revision of ISO 500:1991) 2) To be published. (Revision of ISO 5692:1979) BSISO64891:20011ISO -98461:(1002)E 2 ISO 1002 All rights rsedevre The yaw requirement of 60 according to ISO 20019 may be exceeded when smaller tyres or wide-track settings, or both, are used on the towing vehicle. A
23、s this could result in interference, it should be indicated on a decal or decals on or near the assembly, and in the operators manual. Dimensions in millimetres a Not controlled. Figure 1 Hitch-hook dimensions BSISO64891:20012ISO -98461:(1002)E ISO 1002 All rights rsedevre 3 Dimensions in millimetre
24、s Key 1 Maximum metal transverse member 2 Maximum metal central member Figure 2 Keeper limiting-surface dimensions (maximum metal) Dimensions in millimetres Key 1 Tip clearance for hook (if required) Figure 3 Keeper dimensions BSISO64891:20013ISO -98461:(1002)E 4 ISO 1002 All rights rsedevre 3.2 Loc
25、ation The hitch-hook shall be located as shown in Figure 4, mounted in the plane of the tractors longitudinal axis. The centre of the hitch-hook sphere shall be located at the distance indicated, rearwards from the end of the power take-off (PTO) shaft, as high as possible, and without any part of t
26、he hitch-hook or its construction (e.g. keeper- plate) entering the clearance zone specified for the PTO in ISO 500. At its lowest position, the point of the hitch-hook shall be no more than 150 mm above ground level. Dimensions in millimetres Figure 4 Hitch-hook Relation to PTO BSISO64891:20014BS I
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