Road vehicles - Fifth wheels – Interchangeability
1 Scope
This standard specifies the mounting dimensions and interchangeability of the fifth wheel on the subframe or mounting plate.
This standard is applicable to the fifth wheel of a 50 kingpin as defined in GB/T 4606 or 90 kingpin as defined in GB/T 4607.
Dimensions not specified are left to the discretion of the component manufacturer
Note: Those test conditions and strength requirements to be met by 50 and 90 fifth wheels are specified in GB/T 20069.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document applies.
GB/T 4606 Road vehicles - 50 semi-trailer fifth wheel coupling pin - Basic and mounting/interchangeability dimensions (GB/T 4606-2006, ISO 337: 1981, IDT)
GB/T 4607 Road vehicles - 90 semi-trailer fifth wheel coupling pin - Basic and mounting/interchangeability dimensions (GB/T 4607-2006, ISO 4086:2001, Road vehicles - 90 semi-trailer fifth wheel kingpin interchangeability, IDT)
GB/T 20069 Road vehicle - Fifth wheel couplings strength tests (GB/T 20069-2006, ISO 8717:2000, IDT)
GB/T 20070 Road vehicles - Mechanical coupling between tractors and semi-trailers - Interchangeability (GB/T 20070-2006, ISO 1726:2000, IDT)
3 Requirements
3.1 Fixing holes
3.1.1 Mounting plate
Road vehicles - Fifth wheels – Interchangeability
1 Scope
This standard specifies the mounting dimensions and interchangeability of the fifth wheel on the subframe or mounting plate.
This standard is applicable to the fifth wheel of a 50 kingpin as defined in GB/T 4606 or 90 kingpin as defined in GB/T 4607.
Dimensions not specified are left to the discretion of the component manufacturer
Note: Those test conditions and strength requirements to be met by 50 and 90 fifth wheels are specified in GB/T 20069.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document applies.
GB/T 4606 Road vehicles - 50 semi-trailer fifth wheel coupling pin - Basic and mounting/interchangeability dimensions (GB/T 4606-2006, ISO 337: 1981, IDT)
GB/T 4607 Road vehicles - 90 semi-trailer fifth wheel coupling pin - Basic and mounting/interchangeability dimensions (GB/T 4607-2006, ISO 4086:2001, Road vehicles - 90 semi-trailer fifth wheel kingpin interchangeability, IDT)
GB/T 20069 Road vehicle - Fifth wheel couplings strength tests (GB/T 20069-2006, ISO 8717:2000, IDT)
GB/T 20070 Road vehicles - Mechanical coupling between tractors and semi-trailers - Interchangeability (GB/T 20070-2006, ISO 1726:2000, IDT)
3 Requirements
3.1 Fixing holes
3.1.1 Mounting plate
