ISO 1726-3:2010
(Main)Road vehicles — Mechanical couplings between tractors and semi-trailers — Part 3: Requirements for semi-trailer contact area to fifth wheel
Road vehicles — Mechanical couplings between tractors and semi-trailers — Part 3: Requirements for semi-trailer contact area to fifth wheel
ISO 1726-3:2010 specifies the test conditions of a static test to be performed on the semi-trailer contact area to the fifth wheel. It ensures the ability of the semi-trailer to couple the greatest possible variety of tractor vehicles equipped with a fifth wheel coupling in accordance with ISO 3842.
Véhicules routiers — Liaisons mécaniques entre tracteurs et semi-remorques — Partie 3: Exigences pour plateaux à friction de semi-remorques
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 1726-3
First edition
2010-08-15
Road vehicles — Mechanical couplings
between tractors and semi-trailers —
Part 3:
Requirements for semi-trailer contact
area to fifth wheel
Véhicules routiers — Liaisons mécaniques entre tracteurs et semi-
remorques —
Partie 3: Exigences pour plateaux à friction de semi-remorques
Reference number
ISO 1726-3:2010(E)
©
ISO 2010
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ISO 1726-3:2010(E)
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ISO 1726-3:2010(E)
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
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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 be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 1726-3 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 15,
Interchangeability of components of commercial vehicles and buses.
ISO 1726 consists of the following parts, under the general title Road vehicles — Mechanical couplings
between tractors and semi-trailers:
⎯ Part 1: Interchangeability between tractors and semi-trailers for general cargo
⎯ Part 2: Interchangeability between low-coupling tractors and high-volume semi-trailers
⎯ Part 3: Requirements for semi-trailer contact area to fifth wheel
© ISO 2010 – All rights reserved iii
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ISO 1726-3:2010(E)
Introduction
The dimensional interchangeability of truck and trailer is specified in various standards and regulations. In
order to be able to design the details and resistance of the coupling devices, the area for the introduction of
forces and torques between fifth wheel and kingpin and trailer also needs to be well defined.
Since many fifth wheel coupling plates are designed with certain wear resistance and limited flexibility,
stiffness needs to be taken into account when designing the mating area of the trailer, which generally is
made of steel.
The fact that damage can occur in this area, including broken coupling plates, emphasizes the necessity of
this part of ISO 1726.
...
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