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All the technical contents of this standard are mandatory.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 11567.1-2001 Motor vehicles and trailers-lateral protection requirements and GB 11567.2-2001 Motor vehicles and trailers-rear underrun protection requirements.
In addition to a number of editorial changes, the following technical changes have been made with respect to GB 11567.1-2001 and GB 11567.2-2001 (the previous editions):
- The standard is renamed as Motor vehicles and trailers-lateral and rear underrun protection requirements";
- The definitions of "unprotected road users", "lateral protection device" and "rear underrun protection device" are modified (see 3.1, 3.2 and 3.3; 2.1 and 2.2 of Edition 2001);
- The technical requirement that different installation positions be available for lateral protection device is added (see 4.6 and 6.13);
- The requirements of lateral protection device of the center axle trailer are added (see 5.2.1 and 6.4.1);
- The requirements of lateral protection device of vehicles with dual steering axle are added (see 5.4 and 6.6);
- The requirements of lateral protection device of retractable trailers are deleted;
- The requirements on the cross-section height of transverse members are modified (see 7.1 and 9.4; 3.1 and 5.4 of Edition 2001);
- The requirements on the maximum horizontal deformation amount of rear underrun protection device of road transport tank vehicles for liquid dangerous goods (see 7.3 and 9.6);
- The technical requirements for vehicle mounted with tail-board at rear part are added (see 7.4 and 9.8);
- The distance between the lower edge of rear underrun protection device and the ground is modified as not greater than 500 mm (see 8.1 and 9.1; 4.1.2 and 5.1.2 of Edition 2001);
- The requirements on mounted position of rear underrun protection device of road transport tank vehicles for liquid dangerous goods are added (see 8.3 and 9.2);
- The requirements for same type are added (see Clause 10);
- The requirements for the implementation of this standard during transition period are added (see Clause 11);
- The test conditions for lateral protection device are added (see Annex A);
- The test load applied at three points is modified (see B.3.2.2; Annex A.3.2.2 of Edition 2001);
- The loading procedure for the rear underrun protection device is modified (see B.3.3; A.3.3 of Edition 2001);
- The replacement of the force application point of rear underrun protection device is added (see B.3.4).
This standard is proposed by the Ministry of Industry and Information Technology.
This standard is under the jurisdiction of SAC/TC 114 National Technical Committee on Automobiles of Standardization Administration of China.
The previous editions of this standard are as follows:
——GB 11567-1989 and GB 11567-1994;
——GB 11567.1-2001;
——GB 11567.2-2001.
Motor vehicles and trailers-lateral and rear underrun protection requirements
1 Scope
This standard specifies the technical requirements of motor vehicles and trailers-lateral and rear underrun protection devices and those of vehicles.
This standard is applicable to N2, N3, O3 and O4 vehicles.
This standard is not applicable to semi-trailer tractors, nor is it applicable to vehicles designed and manufactured for special purposes that cannot be fitted with lateral protection device and rear underrun protection device. The rear underrun protection requirements are not applicable to special purpose vehicles, such as vehicles that transport goods such as timber, that are specifically designed and manufactured to carry long cargo that cannot be segmented.
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/T 3730.2 Road vehicle - Masses - Vocabulary and codes
GB/T 15089 Classification of power-driven vehicles and trailers
3 Terms and definitions
For the purpose of this standard, the terms and definitions specified in GB/T 3730.2 and GB/T 15089 as well as the following ones apply.
3.1
unprotected road users
pedestrian, cyclist, or motorcyclist who, when using road, may fall on the vehicle side and be caught in below wheels
3.2
lateral protection device
device consisting of longitudinal component and connecting structural member and fixed to lateral component of the chassis or to other structural members of the vehicle to prevent unprotected road users from falling on the vehicle side and being caught in below wheels, which may be served as by some parts of the vehicle
3.3
rear underrun protection device
device consisting of transverse member and connecting structural member and fixed to the chassis component or to other structural members of the vehicle
3.4
rear underrun protection
special rear underrun protection device or vehicle body, frame component or other components that, by virtue of the shape and character, have all or part of the function of the rear underrun protection device
4 Technical requirements for lateral protection device
4.1 Lateral protection device shall be measured in accordance with the test conditions specified in A.1 of Annex A. The outer surface of the lateral protection device shall be smooth and as continuous as possible; adjacent components may overlap, but the exposed edge of the overlap joint shall be rearward or downward; a longitudinal gap no greater than 25 mm shall be left between adjacent components, but the rear part shall not exceed the outside of the front part. The round head of the bolt and rivet may protrude from the outer surface by no more than 10 mm, and it is the same for other parts as long as they are smooth and have a similar round head structure. Exposed edges and corners in contact with a sphere 100 mm in diameter shall be chamfered with a fillet radius of no less than 2 5 mm; for components projecting by less than 5 mm, the edges of the outward surface shall be blunted.
4.2 The lateral protection device can be a continuous plane or consist of one or more rods, or an assembly of the plane and rods; if rod structure is adopted, the rod spacing shall be no greater than 300 mm, and the cross section height shall be:
a) no less than 50 mm for N2 and O3 vehicles;
b) no less than 100 mm for N3 and O4 vehicles.
The plane-and-rod composite structure shall form a physically continuous lateral protection device, which shall meet the requirements of 4.1.
4.3 The front edge of the lateral protection device shall have a continuous vertical member going through the whole height. For N2 and O3 vehicles, the outer side and front face of the vertical member shall be recurved and incurved by at least 50 mm and 100mm respectively, or be made into at least one-fourth circular arc with a radius no less than 50mm; for N3 and O4 vehicles, the outer side and front face of the vertical member shall be recurved and incurved by at least 100 mm respectively, or be made into at least one-fourth circular arc with a radius no less than 100mm (as shown in Figure 1).
Dimensions in millimeters
Figure 1 Schematic diagram for vertical member
4.4 The lateral protection device shall be rigid, fixed firmly so that the device will not be loosened due to vibration. It shall be made of metal or other proper materials except for the parts and components mentioned in 4.5. Where 1 kN of static pressure is applied vertically to parts on the outer surface of the device via the flat circular indenter in a diameter of 220mm±10mm, the deformation of the parts due to load carrying shall meet the following requirements:
a) the deformation amount shall be no more than 30 mm for the section 250 mm from the rear edge of the lateral protection device;
b) the deformation amount shall be no more than 150 mm for the rest part.
4.5 Facilities permanently fixedly installed on the vehicle, such as spare tire, battery holder, air cylinder, fuel tank, lamp, reflector, tool box and the like may be used as part of the lateral protection device, in which case, their dimensions shall comply with the requirements of clause 4. The clearance between the lateral protection device and the permanently fixedly installed facilities shall comply with the requirements of 4.1.
4.6 Different installation positions on the vehicle side are allowed to be designed for the lateral protection device. In such case, there shall be a reliable means to ensure that it is in the normal working position after installation, and will not be moved freely; the force to be applied to adjust its installation position shall not exceed 400 N.
5 Technical requirements for vehicles equipped with lateral protection device
5.1 Test vehicles shall be measured according to the test conditions specified in A. 2. The lateral protection device shall not add to the total width of the vehicle, and the major part of its outer surface shall be located no more than 150 mm inside the outermost edge (maximum width) of the vehicle. At least 250 mm of the rear end section of the lateral protection device shall not be located greater than 30 mm inward from the outermost edge of the rear tire (excluding the expanded part of the tire for contact with the ground). For some vehicles, it is allowed to incurvate the front edge of the lateral protection device according to the requirements in 5.2.3 and 5.2.4.
5.2 Structural requirements for front edge of lateral protection devices
5.2.1 The front edge position shall meet the following requirements:
a) For N2 and N3 vehicles: the front edge shall be within 300 mm behind the closer tangent plane of the tire circumference, which is the vertical plane perpendicular to the longitudinal section of the vehicle.
b) For the drawbar trailers: the front edge shall be within 500 mm behind the plane mentioned in 5.2.1a).
c) For semi-trailers: if a supporting device is installed, the front edge shall be located no more than 250 mm behind the central cross-section of the supporting device. However, in no case shall the front edge be over 2,700 mm from the central cross-section of the main towing pin at the most rear position.
d) For the center axle trailers: the front edge shall be located in front of the cross-section of the first axle center, but not beyond the front end of the vehicle body to ensure the normal mobility of the trailer.
5.2.2 Where the front edge of lateral protection device is in an open space which is grater than 25mm, it shall be provided with a continuous vertical member going through the whole height. For N2 and O3 vehicles, the outer side and front face of the vertical member shall be recurved and incurved by at least 50 mm and 100mm respectively, or be made into at least one-fourth circular arc with a radius no less than 50mm; for N3 and O4 vehicles, the outer side and front face of the vertical member shall be recurved and incurved by at least 100 mm respectively, or be made into at least one-fourth circular arc with a radius no less than 100mm.
5.2.3 For N2 and N3 vehicles, if the line 300mm behind the closer tangent plane of the tire circumference given in 5.2.1a) falls onto the driving cab, the front edge shall not be greater than 100 mm from the rear panel of the cab, and if necessary, it shall be incurved into an angle of no more than 45°. In such case, the requirements of 5.2.2 are not applicable.
5.2.4 For N2 and N3 vehicles, the requirements of 5.2.2 may apply if the line 300mm behind the closer tangent plane of the tire circumference given in 5.2.1a) falls behind the driving cab and the front edge is not greater than 100 mm from the rear panel of the cab.
5.3 The rear edge of lateral protection device shall be within 300 mm in front of the closer tangent plane of the tire circumference, which is the vertical plane perpendicular to the longitudinal section of the vehicle; a continuous vertical member is not essential for the rear edge.
5.4 The requirements specified in 5.2 and 5.3 are independent, and cannot be combined. However, for vehicles with dual steering axles, if the wheelbase is not more than 2,100 mm, there will be no requirements for the lateral protection devices between the two axles.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements for lateral protection device
5 Technical requirements for vehicles equipped with lateral protection device
6 Technical requirements for vehicles with lateral protection device
7 Technical requirements for rear underrun protection device
8 Technical requirements for vehicles with rear underrun protection device
9 Technical requirements for vehicles with rear underrun protection
10 Requirements on the same type
11 Requirements for the standard implementation transition period
Annex A (Normative) Test conditions for lateral protection device
Annex B (Normative) Test conditions and procedures for rear underrun protection device under static loading
Annex C (Normative) Test conditions and procedures for mobile barrier rear-end collision test
Annex D (Normative) Testing technology: instruments
