Specification for van trailers
1 Scope
This document specifies the technical requirements, test items and methods, inspection rules, as well as marking, packaging, transport and storage requirements of the van trailers.
This document is applicable to the design and production of van trailers for cargo transport.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 1589 Limits of dimensions, axle load and masses for motor vehicles, trailers and combination vehicles
GB/T 4606 Road vehicles - 50 semi-trailer fifth wheel coupling pin - Basic and mounting/interchangeability dimensions
GB/T 4744 Textiles - Testing and evaluation for water resistance - Hydrostatic pressure method
GB/T 4781 Commercial road vehicles - 50 mm drawbar eye - Interchangeability
GB 4785 Prescription for installation of the external lighting and light-signalling devices for motor vehicles and their trailers
GB/T 6420 Freight trailer series pedigree
GB 7258-2017 Technical specifications for safety of power-driven vehicles operating on roads
GB 8624-2012 Classification for burning behavior of building materials and products
GB 11567 Motor vehicles and trailers-lateral and rear underrun protection requirements
GB/T 13873 Road vehicles - Trailer test procedure
GB/T 17275 Technical requirements for freight draw-bar trailers
GB/T 18411 Power-driven vehicles manufacturer’s plate
GB/T 20070 Road vehicle - Mechanical coupling between tractors and semi-trailers - interchangeability
GB 23254 Retro-reflective markings for trucks and trailers
GB/T 23336 General technical requirements for semitrailer
GB 25990 Rear-marking plates for vehicles and their trailers
GB 29753-2013 Safety requirements and test methods for refrigerating van for transporting food and biological products on road
GB/T 35782 Specification for swap trailer transport of road vehicles
GB/T 37245 General technical requirements for centre-axle trailer
GB/T 37706 Installation and operation technical requirements of tail lifts for vehicle
JB/T 5943 Construction machinery - General specifications for welding parts
JT/T 1178.2-2019 Safety specification for commercial vehicle for cargoes transportation - Part 2: Towing vehicle and trailer
QC/T 484 Automobiles - Paint coating
QC/T 625 Metallic coatings and conversion coatings for automobile
QC/T 639 Rubber weatherstrips for automobile
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
van trailer
trailer with independent and enclosed van body structure, the main components of which can bear the specified load
Note: Van trailers can be divided into three types in terms of their structure forms, i.e., van semi-trailer, van draw-bar trailer and van centre-axle trailer.
3.2
van box body
enclosed van body of which the body plates are made of rigid materials such as metal, non-metal or composite materials
3.3
refrigerated van body
van box body which is provided with a heat insulation structure to limit the heat exchange inside and outside the van body and a temperature regulation equipment
3.4
curtain side van body
enclosed van body formed by the walls on the left and right side of the van, as well as the those in the front and at the rear of the van and the top structure, among which, the side walls are covered with soft materials on the outside so that the goods can be conveniently loaded and unloaded by opening the outer surface of the side walls
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3.5
wing van body
enclosed van box body equipped with a special device that allows the side and/or top wings of the van body to open and close by themselves
3.6
air leakage ratio
ratio of the air leakage (m3/h) to the volume of the van body (m3) under standard condition when the difference in test pressure between the inside and outside of the van box body is 100 Pa±5 Pa, which is expressed in h-1
4 Technical requirements
4.1 Complete vehicle requirements
4.1.1 Basic requirements
4.1.1.1 The van trailers shall meet the relevant requirements of GB/T 17275, GB/T 23336 and GB/T 37245 respectively, and the product series shall meet the requirements of GB/T 6420.
4.1.1.2 The overall dimension, axle load and mass parameters of van trailer shall meet the requirements of GB 1589.
4.1.1.3 The assemblies as well as parts and components of the van trailer shall meet the requirements of relevant standards and product technical documents. The purchased parts shall be provided with product quality certificate and shall only be assembled after passing the inspection.
4.1.1.4 The quantity and position of external lighting and light-signalling devices of van trailer shall meet the requirements of GB 4785, and the general requirements for lighting and optical signal devices shall meet the requirements of GB 7258-2017, 8.3.
4.1.1.5 The retro-reflective markings on the body of van trailers shall meet the requirements of GB 23254. Trailers with a length of more than 8.0 m shall be provided with rear-marking plates in accordance with those specified in GB 25990.
4.1.1.6 The lateral and rear underrun protection devices of van trailer shall meet those specified in GB 11567.
4.1.1.7 The design and installation of van trailer with tail lifts for vehicles shall meet those specified in GB/T 37706.
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4.1.1.8 The strength and stiffness requirements as well as the test load for the van body of van trailer shall meet the requirements of Annex A.
4.1.1.9 The maximum stable side-inclination, when the van trailer, which is towed in no load, full load and in static states, is inclined to the left and right, shall meet the requirements of JT/T 1178.2-2019, 4.2.
4.1.2 Interchangeability requirements
4.1.2.1 For van semi-trailers, 50# coupling pins shall be adopted and their basic/mounting/ interchangeability dimensions shall meet those specified in GB/T 4606.
4.1.2.2 The interchangeability of mechanical connections between motor tractor and semi-trailer shall meet those specified in GB/T 20070.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
5 Test methods
6 Inspection rules
7 Marking, packaging, transport and storage
Annex A (Normative) Strength and stiffness requirements and test methods for van trailer body
Annex B (Normative) Quality requirements for riveting of van trailer
Annex C (Normative) Strength requirements and test methods for body bottom panel
Annex D (Normative) Technical requirements for side curtain material, reinforcing bands and related components
