On November 27, 2014, the National Automobile Standardization Technical Committee issued the “Safety Requirements for Side and Rear Parts of Automobiles and Trailers†(draft for comments), and extensively solicited opinions from November 24 to December 24. It is understood that in August 2012, the National Standards Committee began to carry out the merger and revision of GB 11567.1-2001 "Side Protection Requirements for Automobiles and Trailers" and GB 11567.2-2001 "Safety Requirements for Rear and Rear Parts of Automobiles and Trailers", that is, to formulate mandatory states for automobiles. Standard "Safety Requirements for Side and Rear Parts of Automobiles and Trailers" (Draft for Comment). Other Cleaning Machine,Floor Brush,Foam Machine,Drill Type Polishing Machine Haotian Cleaning Equipment Technology Co.,Ltd. , https://www.vacuumcleanersupply.com
Two people died in truck traffic accidents every hour. As early as the early 1980s, Europe began to pay attention to the research of passenger cars chasing and drilling into trucks. In 1983, the regulations for the rear lower protection devices of trucks were promulgated. Regulation ECE R58. The United States enacted the Federal Motor Vehicle Regulations FMVSS 223 "Back Impact Protection Device" and FMVSS 224 "Back Impact Protection" in 1998. In 2001, China promulgated the mandatory standards of GB 11567.1-2001 "Side Protection Requirements for Automobiles and Trailers" and GB 11567.2-2001 "Safety Requirements for Rear and Rear Parts of Automobiles and Trailers". Forced installation of side and rear lower guards for trucks and trailers . As China's car ownership continues to grow, it also highlights some of the problems in the implementation of the standard.
At present, the number of trucks in China is more than 19 million, accounting for 7.8% of the total number of motor vehicles. However, the number of deaths caused by truck accidents accounts for about 28% of the total number of traffic accidents. National truck traffic accidents cause more than 18,000 deaths each year, and almost two people die every hour from truck traffic accidents. In the face of such a severe truck traffic accident, the requirements for the side and rear lower protection requirements of automobiles and trailers suitable for China shall be formulated to reduce the side-involved damage of trucks to pedestrians, and to improve and improve the collision compatibility of the rear guards of trucks with other vehicles. Sex.
The lower edge of the rear lower guard of the truck is not more than 500mm from the ground.
"Safety Requirements for Side and Rear Parts of Automobiles and Trailers" (Draft for Comment) is mainly studied by the United Nations Economic Commission for Europe (ECE) on vehicles with side guards, side guards and vehicles with approved side guards. The full technical content of the Uniform Regulations and the United Nations Economic Commission for Europe (ECE) September 10, 2008 ECE R58 "On the rear lower guard, the vehicle with the approved lower rear guard, the vehicle with the rear lower guard The entire technical content of the Uniform Regulations, combined with the actual application of China, with reference to the technical content of the European ECE R73-2011 version and ECE R58-2008 version, redrafting the "protection requirements for the side and rear of the car and trailer" (draft for comment) ).
The main revisions of the "Safety Requirements for Side and Rear Parts of Automobiles and Trailers" (Draft for Comment) include the following aspects.
(1) The GB 11567.1-2001 "Side Protection Requirements for Automobiles and Trailers" and GB 11567.2-2001 "Safety Requirements for Rear and Rear Parts of Automobiles and Trailers" shall be revised and revised, and the scope of application of the standards shall still apply to N2, N3, O3 and O4 vehicles. There is no expanded scope of application.
(2) Technical requirements for side guards The newly revised standards are divided into three parts: the technical requirements for the side guards in Chapter 4 of the Exposure Draft, and the side guards in Chapter 5 fitted with the provisions of Chapter 4. Technical requirements for vehicles, Chapter 6 Technical requirements for vehicles with side guards. For three different types of test objects and targets, the company is more convenient to operate and implement in the actual development and testing process.
(3) The side guards are added to be designed on the side of the vehicle to have different mounting positions. At this time, there should be a reliable method to ensure that it is placed in a normal working position after installation so as not to be arbitrarily moved, and the force to be applied when adjusting the installation position does not exceed 400N.
(4) For vehicles with dual steering axles, if the wheelbase of the double steering axle is not more than 2100 mm, the side guards are not required between the two axles.
(5) For the center axle trailer: the leading edge should be located in the front area of ​​the front axle center cross section, but not beyond the front end of the vehicle body to ensure the normal mobility of the trailer.
(6) The cross-sectional height dimension of the cross member is modified: the cross-sectional height of the cross member is not less than 100 mm for N2 and O3 vehicles, and not less than 120 mm for N3 and O4 vehicles.
(7) The technical requirements for the rear lower guard of the vehicle for the rear mounted lifting platform are added, and the rear lower guard can be interrupted. When the lifting device works through the interruption and the interruption is unavoidable, the rear lower guard component and The maximum lateral clearance of the lifting platform components does not exceed 25 mm in total; the individual parts of the rear lower protection, including the external lifting mechanism, have an effective surface area of ​​at least 35,000 mm2 in any case. However, for vehicles with a width less than 2000 mm and failing to meet the above-mentioned effective area requirements, the effective area can be reduced under the conditions of 7.3 of this standard.
(8) The height of the lower edge of the rear lower guard is modified from the ground: in the idle state of the vehicle, the height of the lower edge of the rear lower guard in the entire width range of the vehicle is not more than 500 mm. (The national standard GB 11567.2-2001 "Car and trailer rear lower protection requirements" stipulates that: the rear lower protection state can be adjusted: the height of the lower edge of the rear defense device should be no more than 450mm. The state of the rear lower protection cannot be adjusted. Vehicle: The height of the lower edge of the rear guard should be no more than 550mm.)
(9) Test conditions for side guards.
(10) The test load of the three-point loading is modified. The three-point loading is 50kN or a horizontal load equivalent to 25% of the maximum design total mass of the vehicle (whichever is smaller).
(11) It was clarified that the same test sample was used to complete the two-point loading and the three-point loading test.
(12) Added the method of replacement of B3.4 point of force in Appendix B. If the loading point determined in B.3.1 is located in the interruption zone of the lower guard in the standard 7.4 or 9.8, the test is Should be applied to the replacement point, where the replacement point is: for the requirements of B.3.1.1, within 50 mm of the horizontal centerline and closest to the vertical edge of the applied force point; for the requirements of B.3.1.2, from the vehicle or the lower part The horizontal and vertical centerline intersections of the farthest components of the protection vertical centerline are 325 mm away from the outermost end of the rear axle tire of the vehicle and parallel to the vertical plane of the longitudinal centerline of the vehicle.
(13) Revised the requirements of C3.2 moving barrier in Appendix C. The moving barrier quality is 1400kg±25kg, and the front impact surface is rigid and 550mm high.
(14) Revise the speed of the C4.3 moving barrier in Appendix C. The speed of the moving barrier should be 38-40km/h.
·Automobile bidding committee for comments: the height of the lower part of the truck is less than 0.5m