偏心齿扇的循环球式转向器变传动比设计研究  

Designing Research on Variable Ratio for Recirculating Ball Steering Gears with Eccentric Gear Sector

作　　者：侯训波 韩伟杰 王旭光[3] 纪帅 李振鹏 Hou Xunbo;Han Weijie;Wang Xuguang;Ji Shuai;Li Zhenpeng(Dalian Innovation Parts Manufacturing Company,Dalian 116620,China;FAW Jiefang Qingdao Automobile Co.,Ltd.,Qingdao 266000,China;Automotive Research Institute,China National Heavy Duty Truck Group Co.,Ltd.,Ji´nan 250101,China)

机构地区：[1]大连创新零部件制造公司,辽宁大连116620 [2]一汽解放青岛汽车有限公司,山东青岛266000 [3]中国重型汽车集团有限公司汽车研究总院,山东济南250101

出　　处：《机械传动》2023年第2期101-106,共6页Journal of Mechanical Transmission

基　　金：辽宁省企业技术创新重点项目计划(2022XCP167);大连市工业企业技术创新项目计划(202201205)。

摘　　要：为实现变间隙特性,循环球式转向器中摇臂轴上的齿扇通常设置了偏心距,该偏心齿扇是实现转向器变比传动的重要部件。由于齿扇存在偏心距,会使转向器输出的传动比曲线受到影响,尤其对变比曲线的影响更为明显,且会产生变异。以齿扇几何中心点和摇臂轴轴心点分别建立坐标系,计算分析了偏心齿扇在各转角点上所引起的传动比瞬时变化量,提出了用转向器期望的传动比减去该瞬时变化量来进行修正。依据瞬时修正后的传动比设计偏心齿扇的齿廓曲面,可使转向器输出期望的传动比曲线。同时,提出了定量修正传动比的简化方法,与期望值误差可控制在0.3%以内。In order to realize the variable clearance characteristic,the gear sector on the pitman arm shaft in recirculating ball steering gears is usually set with eccentricity.This eccentric gear sector is also an important component to realize the variable ratio of steering gears.Because of the eccentricity of the gear sector,the output ratio curve of steering gears will be affected,especially the variable ratio curve,and variation will occur.The coordinate system is established based on the geometric center point of the gear sector and the axis point of the pitman arm shaft respectively to calculate and analyze the instantaneous change of the ratio caused by the eccentric gear sector at each corner point.It is proposed to use the expected ratio of the steering gear to subtract the instantaneous change for correction.According to the instantaneous corrected ratio,the tooth profile surface of the eccentric gear sector is designed,which can enable the steering gear to output the expected ratio curve.At the same time,a simplified method for the ration correction ratio is proposed,and the error with the expected value can be controlled within 0.3%.

关 键 词：循环球式转向器 偏心齿扇 变传动比 变间隙特性 传动比修正 期望变比曲线 

分 类 号：U463.4[机械工程—车辆工程]