基于棘轮机构的安全油门踏板装置设计与仿真分析  

DESIGN AND SIMULATION ANALYSIS OF SAFETY ACCELERATOR PEDAL DEVICE BASED ON RATCHET MECHANISM

作　　者：潘道远 郑诚心 徐宏雨 PAN Daoyuan;ZHENG Chengxin;XU Hongyu(School of Mechanical and Automotive Engineering,Anhui Polytechnic University,Wuhu,Anhui 241000;Anhui Engineering Technology Research Center of Automotive New Technique,Wuhu,Anhui 241000)

机构地区：[1]安徽工程大学机械与汽车工程学院,安徽芜湖241000 [2]汽车新技术安徽省工程技术研究中心,安徽芜湖241000

出　　处：《井冈山大学学报（自然科学版）》2020年第5期66-71,共6页Journal of Jinggangshan University (Natural Science)

基　　金：安徽省自然科学基金项目(1808085ME128);安徽高校自然科学重点项目(KJ2017A106);安徽工程大学大学生科研项目(2020DZ33);安徽工程大学创新团队:人机自然交互下的智能机器人信息共融与协同控制。

摘　　要：针对特殊情况下驾驶员容易误踩油门踏板而造成交通事故的现象,分析了驾驶员踩踏油门踏板的方式,利用小球的惯性力作为误踩的评判依据,设计了一种基于棘轮机构的安全油门踏板装置。应用CATIA软件对该装置进行了三维建模,并对核心部件使用ANSYS软件进行有限元仿真分析。棘轮、前棘爪和后棘爪所受应力的最大值分别为152.1 MPa、165.19 MPa和149.82 MPa,均小于45#钢的屈服强度值355 MPa,且核心部件的应变较小。结果表明,该装置满足设计要求,能够防止驾驶员对油门踏板的误操作。In view of the traffic accident caused by driver's mistake on accelerator pedal under special circumstances,this paper analyses the way in which the driver tramples on the accelerator pedal,and designs a safety accelerator pedal device based on ratchet mechanism by using the inertia force of the ball as the basis for mistake evaluation.Three-dimensional model of the device is built by CATIA software,and finite element simulation analysis of key components is carried out by ANSYS software.The maximum stress of ratchet,front ratchet and rear ratchet are 152.1 MPa,165.19 MPa and 149.82 MPa respectively,which are less than 355 MPa of yield strength of 45#steel,and the deformation of key components is small.The result shows that the device meets the design requirements and can prevent the driver from operating the accelerator pedal incorrectly.

关 键 词：油门踏板 棘轮机构 棘轮棘爪 惯性力 仿真分析 

分 类 号：TH116[机械工程—机械设计及理论]