摘要
为了解决汽车通过减速带时影响车内乘员舒适感、轮胎磨损、汽车悬架损伤等问题,设计了一种活塞式智能可调节液体减速带。本减速带采用结构钢作为材料,承载能力强,环境影响较小,使用寿命长。减速带下方设置装有剪切增稠液的活塞缸,当车辆以高速或低速通过减速带时会使剪切增稠液呈现出固态或液态,从而迫使机动车在通过减速带时降低车速,达到减速的目的。本减速带还具有超高速智能防护功能,当车速过高时,本减速带也会降下,防止过大冲击对乘员造成伤害。借助MATLAB仿真软件,分别探讨了圆弧形和梯形减速带在相同高度和宽度的振动分析,得出在不同车速下机动车通过减速带时的纵向加速度的变化轨迹。结果表明,相同速度下,圆弧减速带和新型梯形减速带对车带来的影响较小,可以直接代替传统减速带。本文设计的活塞式智能可调减速带既克服了圆弧减速带高度不可调整的弊端,又克服了梯形减速带高速通过时受影响较大的弊端,可为未来先进智能减速带的设计提供理论依据和参考价值。
In order to solve the problems that affect the comfort,tire wear and car damage when passing the speed bump,in the paper a piston-type intelligent adjustable liquid deceleration strip is designed.The strip adopts structural steel as the material with strong bearing capacity,minor environmental impact and long service life.A piston cylinder equipped with a shear thickening fluid is disposed under the speed reducer.When the vehicle passes the speed bump at a high speed or a low speed,the shear thickening fluid is solid or liquid,thereby forcing the vehicle to reduce the speed and reaching the purpose of deceleration.The speed bump also has ultra-high speed intelligent protection function.When the vehicle speed is too high,the speed reducer will also be lowered to prevent the impact of the impact on the drivers and passengers.With the help of MATLAB simulation software,the vibration analysis of the arc-shaped and trapezoidal speed-reduction belts at the same height and width is discussed respectively,and the trajectory of the longitudinal acceleration of the vehicle passing through the deceleration strip at different vehicle speeds is obtained.The piston type intelligent adjustable speed bump designed in this paper overcomes the disadvantages of the un-adjustable height of the arc speed reducer,and overcomes the disadvantages of the trapezoidal speed reducer when it passes at high speed.It can provide theoretical basis and reference value for the design of advanced intelligent speed bump in the future.
作者
郭永刚
李冲冲
段梦珍
赵泮政
李映莹
宣德坤
马晓录
GUO Yong-gang;LI Chong-chong;DUAN Meng-zhen;ZHAO Pan-zheng;LI Ying-ying;XUAN De-kun;MA Xiao-lu(School of Mechanical and Electrical Engineering,Henan University of Technology,Zhengzhou 450001,China)
出处
《公路》
北大核心
2020年第1期147-151,共5页
Highway
关键词
减速带
非牛顿流体
仿真分析
剪切增稠液
安全
deceleration strip
non-Newtonian fluid
simulation analysis
shear thickening fluid
safety
