1 Scope
This standard specifies strength test conditions and requirements for the 40mm and 50mm drawbar couplings and corresponding drawbar eyes for hinged drawbars.
Note: This standard is applicable to the strength test for towing devices of towing vehicle. See ISO 3584 for couplings, and GB/T 4781 and ISO 8755 for eyes.
2 Normative References
The following normative document contains provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 3730.2 Road Vehicles—Masses—Vocabulary and Codes (GB/T 3730.2-1996, idt ISO 1176:1990)
3 Terms and Definitions
For the purposes of this standard, the terms and definitions given in GB/T 3730.2 apply.
4 General Test Requirements
4.1 The test shall be carried out with drawbar couplings and drawbar eyes having corresponding functional dimensions.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Test Requirements
5 Determination of Horizontal Load
6 Dynamic Test
7 Static Test
8 Strength Criteria
