ISO 1726-3:2023
(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
This document specifies the test conditions of a static test performed on the semi-trailer contact area to the fifth wheel. It ensures the suitability of the semi-trailer to couple the greatest possible variety of tractor vehicles equipped with a fifth wheel coupling in accordance with ISO 3842. It also specifies requirements to avoid damages or malfunctions of the fifth wheel coupling caused by the semi-trailer chassis, the semi-trailer plate or any other of its components.
Véhicules routiers — Liaisons mécaniques entre tracteurs et semi-remorques — Partie 3: Exigences pour plateaux à friction de semi-remorques
General Information
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 1726-3
Second edition
2023-07
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 1726-3:2023(E)
© ISO 2023
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ISO 1726-3:2023(E)
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© ISO 2023
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ISO 1726-3:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 1
5 Test methods . 2
5.1 General . 2
5.2 Test with static vertical force . 2
5.2.1 Test arrangement . 2
5.2.2 Test procedure. 2
5.3 Alternative method . 2
6 Design of the semi-trailer contact zones to the fifth wheel . 5
Bibliography . 7
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ISO 1726-3:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 40,
Specific aspects for light and heavy commercial vehicles, busses and trailers.
This second edition cancels and replaces the first edition (ISO 1726-3:2010), which has been technically
revised
The main changes are as follows:
— modification of maximum displacement and load application in Clause 4;
— modification of static test requirements in Clause 5.
A list of all parts in the ISO 1726 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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ISO 1726-3:2023(E)
Introduction
The dimensional interchangeability of truck and trailer is specified in various standards and
regulations. In order to be able to
...
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