1、 Reference number ISO 11407:2004(E) ISO 2004INTERNATIONAL STANDARD ISO 11407 Second edition 2004-11-01 Commercial road vehicles Mechanical coupling between towing vehicles, with coupling mounted forward and below, and centre-axle trailers Interchangeability Vhicules routiers utilitaires Accouplement
2、 mcanique entre vhicules tracteurs dispositif dattelage avanc et surbaiss et remorques essieux centraux Interchangeabilit ISO 11407:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edi
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7、rg Published in Switzerland ii ISO 2004 All rights reservedISO 11407:2004(E) ISO 2004 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Interchangeability dimensions 1 2.1 Distance between drawbar coupling axis and rear end of towing vehicle . 1 2.2 Turning front of trailer
8、 2 2.3 Height of couplings. 3 2.4 Drawbar contour . 3 2.5 Rear end of towing vehicle 3 2.6 Angles of inclination and articulation. 3 3 Possible combinations and marking 5 Annex A (informative) Classes of dimensions for C min7 Annex B (informative) Vehicle combinations Examples of configurations . 8
9、Bibliography . 9 ISO 11407:2004(E) iv ISO 2004 All rights reservedForeword 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
10、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 with
11、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. Draft Interna
12、tional 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 document may b
13、e the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11407 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 15, Interchangeability of components of commercial vehicles and buses. This second edition cancels
14、and replaces the first edition (ISO 11407:1993), which has been technically revised. ISO 11407:2004(E) ISO 2004 All rights reserved vIntroduction In many countries, the total length of road trains is limited by law. In view of the increasing demand for large-volume transports, vehicle manufacturers
15、have developed solutions for optimizing the loading space of road trains within the legal specification. Centre-axle trailers are a well-proven means of reducing the necessary free space between towing vehicles and trailer, thereby increasing loading space while keeping within legal limitations. New
16、 demands, wider usage and further development of the concept have lead to further changes. To increase the volume even more, lower vehicle chassis have been developed. There is also a growing demand for extra equipment in the overhang, such as retractable tail lift and additional drawbar coupling fi
17、tted in the end of the chassis frame. In order to prevent interference between the drawbar and this extra equipment, specifically on low chassis, it has become necessary to introduce a new, “low” class of drawbar profile. A new category of road train (25,25 m) has been introduced in Finland and Swed
18、en, the intention being that it will be possible to couple vehicles conforming with this International Standard to combinations of more than one trailer. Consequently, this edition of ISO 11407 is applicable to drawbar and drawbar coupling positions on those road trains, as well. INTERNATIONAL STAND
19、ARD ISO 11407:2004(E) ISO 2004 All rights reserved 1Commercial road vehicles Mechanical coupling between towing vehicles, with coupling mounted forward and below, and centre-axle trailers Interchangeability 1 Scope This International Standard specifies the interchangeability requirements of the vari
20、ous elements and dimensions for the mechanical coupling of towing vehicles whose coupling is mounted forward and below to centre-axle trailers. It is applicable to road trains for the commercial transport of low-density, high-volume cargo of the greatest possible variety. It is also applicable to co
21、rresponding equipment in cases where the same vehicle makes up part of a road train having more than one trailer. It is not applicable to dedicated or special combinations such as coupling systems with an extensible drawbar; nor does it specify limitations on maximum gross mass and overall dimension
22、s, which are generally laid down by legislative requirements. Vehicle combinations whose couplings form the subject of this International Standard (see Annex B for examples) are not interchangeable with those whose couplings are rear-mounted (see ISO 11406). 2 Interchangeability dimensions 2.1 Dista
23、nce between drawbar coupling axis and rear end of towing vehicle The distance, A, between the drawbar coupling axis and the rear end of the towing vehicle (see Figures 1 and 2) shall be in accordance with Table 1. Since dimension A always exceeds 420 mm, a device that enables coupling actuation at a
24、 maximum distance of 420 mm from the outer border of the body shall be used. Dimensions in millimetres Figure 1 High class Rear end of towing vehicle ISO 11407:2004(E) 2 ISO 2004 All rights reservedDimensions in millimetres Figure 2 Low class Rear end of towing vehicle with tail lift or other extra
25、equipment added Table 1 Distance, A, between drawbar coupling axis and rear end of towing vehicle Dimensions in millimetres Class designation, low/high A 0 100 1 400 1 400 1 600 1 600 1 900 1 900 2.2 Turning front of trailer The turning front of the trailer, C (see Figure 3), is the distance between
26、 the drawbar coupling axis and the front of the trailer. The minimum value of C in a vehicle combination, expressed in millimetres, is determined by the equation: 2 2 min 2 W CA S =+ + where W is the towing vehicle width, expressed in millimetres; A is the distance, expressed in millimetres, between
27、 the drawbar coupling axis and the rear end of the towing vehicle; S is the minimum clearance, expressed in millimetres, between the turning circles of the towing vehicle and the trailer. ISO 11407:2004(E) ISO 2004 All rights reserved 3Based on practical experience, S shall not be less than 250 mm (
28、corresponding to an angle of inclination, , of 4 at an articulation angle, , of approx. 40). This ensures that no contact is possible between the towing vehicle and the front of the trailer under normal, even ground conditions of operation and turning. NOTE 1 S = 365 mm gives = 6 at all available ar
29、ticulation angles . Calculation examples for C minare given in Annex A. NOTE 2 A smaller dimension C, if required by the client, does not exclude the risk of contact and damage to the bodies of towing vehicle and trailer, depending on the angle of articulation and the height of the vehicles. In this
30、 case, such a combination is considered a dedicated combination and is not covered by this International Standard. 2.3 Height of couplings The height of the drawbar coupling on the laden towing vehicle shall be as shown in Figures 1 and 2. The height of the towing eye on the laden centre-axle traile
31、r shall be as shown in Figures 4 and 5. 2.4 Drawbar contour Drawbar dimensions shall be in accordance with Figures 4 and 5. NOTE For drawbar-eye dimensions, see ISO 1102. However, centre-axle trailers could require a reinforced drawbar eye with dimensions larger than those specified in ISO 1102. 2.5
32、 Rear end of towing vehicle The rear end of the towing vehicle shall be in accordance with the high-class configuration (see Figure 1), except when tail lifts or other extra equipment are fitted, when it shall be in accordance with the low-class configuration (see Figure 2). 2.6 Angles of inclinatio
33、n and articulation The towing vehicle shall be so constructed that the towing vehicle and trailer components, except for those concerned with articulation, shall not make contact with each other when the angle of inclination of the centre-axle trailer relative to the towing vehicle is u 6. See Figur
34、es 1 and 2. Under manoeuvring conditions, an articulation angle (see Figure 3) of 90 shall be allowed for. The angle of inclination shall be able to vary from 0 to 6. ISO 11407:2004(E) 4 ISO 2004 All rights reservedFigure 3 Turning front of trailer Dimensions in millimetres Figure 4 Front end of cen
35、tre-axle trailer ISO 11407:2004(E) ISO 2004 All rights reserved 5Dimensions in millimetres Class High Low A B 2 max. B 1max. L min. 1 400 125 0 1 950 1 600 125 0 2 100 1 900 125 0 2 350 Figure 5 Drawbar dimensions 3 Possible combinations and marking Possible combinations of towing vehicles and trail
36、ers are shown in Table 2. ISO 11407:2004(E) 6 ISO 2004 All rights reservedTable 2 Combinations of towing vehicles and trailers Towing vehicle Low class High class 1 400 1 600 1 900 1 400 1 600 1 900 1 400 a 1 600 b a High class 1 900 b b a 1 400 a a 1 600 b a b a Trailer Low class 1 900 b b a b b a
37、a Preferred combination.b May be used if permitted by legal requirements.So as to ensure easy recognition of the important (but variable) parameter dimension A, towing vehicles and trailers should be marked with a plate measuring 150 mm 150 mm min., affixed permanently at the rear end of the towing
38、vehicle and at the front of the trailer. Examples of such markings are shown in Figure 6. Classes ISO 11407:2004 Towing vehicle Trailer High 1 600 High 1 600 or 1 900 Low 1 600 or 1 900 a) Towing vehicle Classes ISO 11407:2004 Trailer Towing vehicle Low 1 600 High 1 600 or 1 400 Low 1 600 or 1 400 b
39、) Trailer Figure 6 Marking plate Examples ISO 11407:2004(E) ISO 2004 All rights reserved 7Annex A (informative) Classes of dimensions for C minDimension C min , the minimum value of the turning front of a trailer, C (see Figure 3), in a vehicle combination, is determined using the equation given in
40、2.2. Table A.1 gives examples of classes for the dimensions used in this calculation. Table A.1 Classes of dimensions for C min Dimensions in millimetres Example Dimension 1 2 3 4 5 6 A a1 900 1 600 1 400 1 900 1 600 1 400 W 2 550 2 600 S min250 C minb2 540 2 300 2 150 2 560 2 320 2 170 aFor the cla
41、ss indicated (see Table 1). bRounded values. ISO 11407:2004(E) 8 ISO 2004 All rights reservedAnnex B (informative) Vehicle combinations Examples of configurations Of the combinations shown here as examples, only B.2.2, B.3.1 and B.3.2 are within the scope of this International Standard. No. Descript
42、ion Illustration B.1 Drawbar trailers B.1.1 Towing vehicle with rear-mounted coupling and drawbar trailer B.1.2 Towing vehicle with coupling mounted forward and below, and drawbar trailer B.2 Centre-axle trailers B.2.1 Towing vehicle with rear-mounted coupling and centre-axle trailer B.2.2 Towing ve
43、hicle with coupling mounted forward and below, and centre-axle trailer B.3 Combinations with more than one trailer B.3.1 Towing vehicle with coupling mounted forward and below, dolly and semi-trailer B.3.2 Tractor with semi-trailer and centre-axle trailer, the semi-trailer with coupling mounted forw
44、ard and below ISO 11407:2004(E) ISO 2004 All rights reserved 9Bibliography 1 ISO 1102, Commercial road vehicles 50 mm drawbar eye Interchangeability 2 ISO 11406, Commercial road vehicles Mechanical coupling between towing vehicles with rear-mounted coupling and drawbar trailers Interchangeability ISO 11407:2004(E) ICS 43.040.70 Price based on 9 pages ISO 2004 All rights reserved
