载货车钢板弹簧悬架设计

载货车钢板弹簧悬架设计摘要悬架系统是现代轿车中最主要的部件，其作用是将车体和车桥（或轮胎）进行弹性联结。其主要功能是将所有作用于轮子与车体间的力矩，例如支撑力：制动力、驱动力等，缓冲从不平坦的道路上传递到车体上的碰撞负荷：减少振动，保证乘员的舒适度，减轻货物和汽车自身的动态负荷。本文就货车悬挂系统在实际应用中遇到的一些问题进行了分析。根据车辆所在区域的路况，对车辆的前、后悬挂系统进行了再设计。在对不同类型的钢板弹簧进行对比分析后，得出其截面形状。参考国内外有关钢板弹簧的设计经验，片数：片的宽度，片厚，片长，弧高，曲率半径，检验刚度，装配刚度等技术指标。通过对钢板弹簧的受力分析、刚度校核、强度校核，证明所选择的各项指标基本符合汽车在空满载条件下的舒适性、舒适性和安全性能的要求。此外，还检查了钢板弹簧销钉的强度。另外，通过对双圆管阻尼器的主要参数的计算，选择出满足国家标准要求的阻尼器。关键词：悬架：钢板弹簧：设计ABSTRACTSuspension system is the most important part of modern car.Its function isto connect the car body and the bridge (or tire)with elasticity.Its main function isto act on all the torque between the wheel and the car body,such as support force;Braking force,driving force,etc.,buffer the collision load transmitted to the carbody on uneven roads;Reduce vibration,ensure the comfort of the occupant,reduce the dynamic load of the cargo and the car itself.This paper analyzes some problems encountered in the practical applicationof truck suspension system.According to the road condition of the vehicle area,the front and rear suspension system of the vehicle was redesigned.Aftercomparative analysis of different types of leaf springs,the section shape isobtained.Refer to the design experience of leaf spring at home and abroad,sheetnumber;The width,thickness,length,arc height,radius of curvature,inspectionstiffness,assembly stiffness and other technical indicators.Through the forceanalysis,stiffness and strength check of leaf spring,it is proved that the selectedindexes basically meet the requirements of comfort,comfort and safetyperformance of automobile under empty full load condition.The strength of leafspring pins was also checked.In addition,through the calculation of the mainparameters of the double tube damper,the dampers which meet the requirementsof the national standard are selected.Key words:Suspension;Leaf spring;Design力目录第一章前言…1.1论文的研究目的和意义...1.2悬架设计应达到的技术要求1.3国内外研究的现状及发展趋势21.3.1悬架弹性元件发展趋势21.3.2国内外悬架的研究方向...1.3.3电子控制悬架今后须要解决的技术问题..1.4设计的主要参数.....5第二章前钢板弹簧基本参数的确定.......62.1单个钢板弹簧的载荷.....2.2钢板弹簧的静挠度.....…..62.3钢板弹簧的动挠度....2.4钢板弹簧满载静弧高....2.5钢板弹簧断面形状的确定...72.6钢板弹簧主长度的确定.8第三章前钢板弹簧的设计计算..3.1钢板弹簧片厚的计算..93.2钢板弹簧片宽的计算...93.4钢板弹簧各片长度的计算103.5钢板弹簧刚度的验算....…113.6钢板弹簧总成在自由状态下的弧高及曲率半径计算........123.7钢板弹簧总成弧高的核算...14第四章前钢板弹簧强度计算........15