| 摘要 |
FIELD: transport engineering; trucks. ^ SUBSTANCE: proposed energy-absorbing buffer of truck relates to collision protective means of vehicles and it can be used in front and rear bumpers of trucks, buses and other vehicles of different types. Buffer connected to front of rear bumper is arranged lower than bumper and includes energy-absorbing devices united into sections arranged at a distance from each other. Energy-absorbing devices in each section are butt-joined and connected to each other. Each energy absorbing device consists of two energy-absorbing members, being mirror-like relative to each other, made integral of tubular blank cut and including bases, bridges and main and additional struts located in relatively perpendicular planes. Bases of energy-absorbing members are connected to outer surface of bumper, bridges of energy-absorbing members are arranged coaxially relative to each other, some engaging with outer surface of bumper, and others, with support plate. Each energy-absorbing device is furnished with leaf-springs and members made of elastic material arranged around additional struts which are united in each section by C-shaped section. Invention prevents getting of passenger car under truck frame, thus providing passive safety. It is reusable device featuring high energy-absorbing properties and stability of shock-absorbing characteristics which can be set within wide ranges. It has simple design and reduced aerodynamic drag which provides economy of fuel. ^ EFFECT: improved safety, reduced aerodynamic drag and fuel consumption. ^ 3 cl, 7 dwg |
