1、BRITISH STANDARDBS ISO 26402:2008Agricultural vehicles Steering systems for agricultural trailers Interface for articulated steering device of semi-mounted trailersICS 65.060.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54
2、g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 26402:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 August 2008 BSI 2008ISBN 978 0 580 58525 8National forewordThis British Standard is the UK implem
3、entation of ISO 26402:2008. The UK participation in its preparation was entrusted to Technical Committee AGE/6, Agricultural tractors and forestry machinery.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include
4、all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsReference numberISO 26402:2008(E)INTERNATIONAL STANDARD ISO26402Fi
5、rst edition2008-05-15Agricultural vehicles Steering systems for agricultural trailers Interface for articulated steering device of semi-mounted trailers Vhicules agricoles Systmes de direction pour remorques agricoles Interface pour dispositif de direction articul pour remorques semi-portes BS ISO 2
6、6402:2008ii 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 ISO technical committees. Each member body interested in a subjec
7、t 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 Commission (IEC)
8、 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. Draft International Standards adopted by the technical committee
9、s 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 document may be the subject of patent rights. ISO shall not be he
10、ld responsible for identifying any or all such patent rights. ISO 26402 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 4, Tractors. BS ISO 26402:2008blank1Agricultural vehicles Steering systems for agricultural trailers Interface f
11、or articulated steering device of semi-mounted trailers 1 Scope This International Standard specifies the dimensions and clearance zones at the interface between tractor and trailer for articulated steering devices of semi-mounted trailers used in agriculture. It also specifies the maximum permissib
12、le forces at the connection of such articulated steering devices. It is applicable exclusively in conjunction with ISO 24347, specifying a ball-type (mechanical) coupling device of 80 mm nominal diameter. It is not applicable to the verification of the mechanical strength of the interface of the art
13、iculated steering devices interface, nor to the mechanical coupling device; this International Standard does not include technical requirements for the articulated steering device itself. 2 Normative references The following referenced documents are indispensable for the application of this document
14、. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 730:1), Agricultural wheeled tractors Rear-mounted three-point linkage Categories 1N, 1, 2N, 2, 3N, 3, 4N and 4 ISO 1103:2007, Road ve
15、hicles Coupling balls for caravans and light trailers Dimensions ISO 17900:2002, Agricultural trailers Balanced and semi-mounted trailers Determination of payload, vertical static load and axle load ISO 24347:2005, Agricultural vehicles Mechanical connections between towed and towing vehicles Dimens
16、ions of ball-type coupling device (80 mm) 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 17900 and the following apply. 3.1 articulated steering equipment in which the steering forces are produced by a change in direction of the towing vehicle and t
17、he movement of the steered trailer wheels is firmly linked to the relative angle between the longitudinal axis of the towing vehicle and that of the trailer 1) To be published. (Replaces ISO 130-1:1994 and ISO 730-2:1979, and incorporates ISO 130-1:1994/Cor.1:1995) BS ISO 26402:20082 4 General requi
18、rements 4.1 The interface of the articulated steering device may consist of one or two connecting points. Figure 1 shows the version consisting of one connecting point as an example. If only one connecting point is provided, it should be located on the left side in the direction of travel. 4.2 The d
19、imensions of the connecting point(s) of the tractor (50 mm ball) shall be in accordance with ISO 1103; those of the connecting point(s) of the trailer shall be in accordance with Figure 2. An unintentional disconnection of the connecting point(s) of the tractor (50 mm ball) and the trailer shall be
20、prevented by mechanical means at the connecting point(s) of the tractor (50 mm ball). 4.3 The maximum force in the direction of the steering rod according to Figure 1 shall not exceed 20 kN. If necessary, appropriate means shall be used to limit this force to the stated value. EXAMPLE Hydraulic powe
21、r supply. 4.4 The centre line through an 80 mm ball-type coupling device according to ISO 24347 and the connecting point(s) of the tractor (50 mm ball) shall be parallel to the rear axle of the tractor. A tolerance of 5 mm both horizontally and vertically is permitted. The location in relation to th
22、e 80 mm ball-type coupling device shall be in accordance with Figure 3. The geometry of the connecting point(s) of the tractor (50 mm ball) shall be according to ISO 1103. 4.5 Both the 80 mm ball-type coupling device and the connecting point(s) (50 mm ball) shall meet the requirements for angles of
23、pitch, yaw and roll given in ISO 24347:2005, 3.1.4. If the angle of yaw of 60 prescribed for mechanical coupling devices cannot be obtained by the connecting point(s) (50 mm ball) without contact between tractor and drawbar parts, the maximum angle of yaw shall be limited by appropriate means (see F
24、igure 1, item 4): appropriate parts of the trailer may act as such a limiter. The operators manual for the trailer shall contain the necessary information. 4.6 The connecting point(s) of the tractor (50 mm ball) shall be detachable if they cause interference with the movement range of the lower link
25、s according to ISO 730 or the lateral movement limiting device(s). The operators manual and/or mounting guidelines shall contain the necessary information. 5 Clearance zones 5.1 The clearance zone for the connecting point(s) shall be in accordance with Figure 4. 5.2 The combined clearance zone for t
26、he 80 mm ball-type coupling device and the connecting point(s) of the tractor (50 mm ball) shall be in accordance with Figure 5. BS ISO 26402:20083Dimensions in millimetres Key 1 connecting point of the tractor (50 mm ball) 2 trailer 3 steering rod of the articulated steering device 4 angle of yaw l
27、imiter Where there is only one connecting point, it shall be on the left side in the direction of travel. Figure 1 Example of an articulated steering device with one connecting point BS ISO 26402:20084 Dimensions in millimetres Figure 2 Dimensions of connecting point(s) of trailer Dimensions in mill
28、imetres Figure 3 Location of connecting point(s) of tractor (50 mm ball) in relation to 80 mm ball-type coupling device BS ISO 26402:20085Dimensions in millimetres Figure 4 Clearance zone for connecting point(s) BS ISO 26402:20086 Figure 5 Combined clearance zone for 80 mm ball-type coupling device
29、and connecting point(s) of tractor (50 mm ball) Top view BS ISO 26402:2008blankBS ISO 26402:2008BSI Group Headquarters389 Chiswick High Road,London W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards Institution (BSI)BSI is the independent national body responsible for preparing British S
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