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1、 Reference number ISO 1728:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 1728 Third edition 2006-09-01 Road vehicles Pneumatic braking connections between motor vehicles and towed vehicles Interchangeability Vhicules routiers Liaisons de freinage pneumatique entre automobiles et vhicules tracts Interc
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5、e address given below. ISO 2006 All rights reserved. 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 o
6、r ISOs member body in the country of the requester. 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 2006 All rights reserved ISO 1728:2006(E) ISO 2006 All rights reserved iii F
7、oreword 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 subject for which a te
8、chnical 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) on all matters
9、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 committees are circulated
10、 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 held responsible f
11、or identifying any or all such patent rights. ISO 1728 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 2, Braking systems and equipment. This third edition cancels and replaces the second edition (ISO 1728:1980), which has been technically revised. -,-,- -,-,- INTERNATI
12、ONAL STANDARD ISO 1728:2006(E) ISO 2006 All rights reserved 1 Road vehicles Pneumatic braking connections between motor vehicles and towed vehicles Interchangeability 1 Scope This International Standard specifies the requirements which ensure interchangeability of the pneumatic braking connections b
13、etween motor vehicles and towed vehicles. It concerns vehicle combinations equipped with pneumatic braking systems with two lines: one control line and one supply line. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated referen
14、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4009, Commercial vehicles Location of electrical and pneumatic connections between towing vehicles and trailers 3 Interchangeability requirements 3.1 Cou
15、pling head type The “Palm type” coupling head shall be used. It shall be fitted with an inhibiting device to prevent incorrect coupling (see Figures 1 and 2). The towing vehicle shall be equipped with an automatic device ensuring, without manual operation, the continuity of the pipelines when they a
16、re coupled, and their closure on uncoupling. This device shall not affect the interchangeability. The coupling head shall make provision for any type of valve to be fitted to the towing vehicle, provided that the valve can be opened by the standard coupling head on the towed vehicle and that the abi
17、lity to be coupled with all coupling heads corresponding to this International Standard is not compromized. 3.2 Coupling head dimensions The dimensions of the coupling heads shall be as given in Tables 1 and 2, and shown in Figures 1 and 2. This International Standard specifies only the dimensional
18、details necessary for the coupling. All other dimensions not shown, as well as details of design, are left to the discretion of the manufacturer. 3.3 Location of coupling heads and flexible pipe connections The locations of both electrical and pneumatic connections between towing and towed vehicles
19、are specified in ISO 4009. The location of coupling heads and flexible pipe connections on the towing and towed vehicles shall comply with ISO 4009. ISO 1728:2006(E) 2 ISO 2006 All rights reserved 3.4 Colour coding for connections For the supply line: RED. For the control line: YELLOW. The colour sh
20、all be related to the coupling head or to a clearly visible point close to the head, for example, pipes or an identification tag. 3.5 Orientation of coupling heads The coupling axis of the fixed coupling heads shall be horizontal. The vertical sealing face shall be located as follows, according to w
21、hether it concerns a road train or an articulated road train: truck: towards the right when the vehicle is viewed from the rear; semi-trailer: towards the left when the vehicle is viewed from the rear. 3.6 Length of flexible pipe connections The length of the flexible pipe connections between towing
22、 and towed vehicles is specified in ISO 4009. The length of flexible pipe connections on the towing and towed vehicles shall comply with ISO 4009. Table 1 Dimensions for coupling head for supply line Connection A a mm B mm With resilient sealing ring (for heads “tractor” and “trailer”) 2,7 0,5 19 2
23、With mobile part providing for the opening of the automatic valve (see 3.1) 3,5 + 1 21 max. 11 min. a The opening of the automatic device shall be assured even when two coupling heads with the most adverse tolerances for pushing down the mobile part are connected together. It shall be possible to pu
24、sh down the sealing face until the dimension A is at zero. ISO 1728:2006(E) ISO 2006 All rights reserved 3 Dimensions in millimetres Key 1 sealing face 3 inhibiting device 2 coupling axis 4 stop Figure 1 Coupling head for supply line -,-,- ISO 1728:2006(E) 4 ISO 2006 All rights reserved Dimensions i
25、n millimetres ISO 1728:2006(E) ISO 2006 All rights reserved 5 Key 1 minimum free space for the crossing of inhibiting device of the other head 2 sealing face 3 coupling axis 4 inhibiting device 5 stop Figure 2 Coupling head for control line Table 2 Dimensions for coupling head for control line Conne
26、ction A a mm B mm With resilient sealing ring (for heads “tractor” and “trailer”) 2,7 0,5 19 2 With mobile part providing for the opening of the automatic valve (see 3.1) 3,5 + 1 21 max. 11 min. a The opening of the automatic device shall be assured even when two coupling heads with the most adverse
27、 tolerances for pushing down the mobile part are connected together. It shall be possible to push down the sealing face until the dimension A is at zero. ISO 1728:2006(E) 6 ISO 2006 All rights reserved Bibliography 1 ISO 1726, Road vehicles Mechanical coupling between tractors and semi-trailers Interchangeability -,-,- ISO 1728:2006(E) ICS 43.040.40 Price based on 6 pages ISO 2006 All rights reserved