非圆面齿轮限滑差速器的设计方法与锁紧特性  

Design method and locking characteristics of limited-slip differential based on non-circular gears

作　　者：李冰冰 刘大伟[1] 傅章磊 LI Bingbing;LIU Dawei;FU Zhanglei(School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004)

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《机械设计》2024年第1期36-42,共7页Journal of Machine Design

基　　金：河北省高等学校科学技术研究项目(QN2020266);河北省研究生创新基金资助项目(CXZZSS2021054)。

摘　　要：文中提出了一种基于非圆面齿轮的新型变传动比差速器,具有互换性好、容错性能强的突出优势,针对该差速器的构型设计与转矩分配特性展开研究。在阐明非圆面齿轮传动机理的基础上,给出了非圆面齿轮的传动比函数与齿数配比方法;结合非圆面齿轮的传动特性和变传动比差速器的机构原理,给出了非圆面齿轮差速器的构型设计方法,并推导出非圆面齿轮差速器锁紧系数表达式,仿真结果表明:增大非圆面齿轮的偏心距有利于提高非圆面齿轮差速器锁紧系数,但考虑非圆面齿轮差速器的体积及轮齿缺陷,需要对非圆面齿轮差速器偏心距进行限制;最后,根据非圆面齿轮设计方法完成了样机研制,测得实际锁紧系数为2.32,与理论计算结果基本吻合。In this article,efforts are made to develop a differential with variable transmission ratios based on the non-circular gears;it has such outstanding advantages as good interchangeability and strong fault tolerance.Both the configuration design and the torque distribution characteristics of the differential are explored.While clarifying the transmission mechanism of the non-circular gears,both the transmission-ratio function and the ratio of the teeth number are given;in combination with both the transmission characteristics of the non-circular gears and the mechanism principle of the differential with variable transmission ratios,the configuration method is presented,and the expression of the locking coefficient is derived.The simulation results show that the ever-growing eccentricity of the differential based on the non-circular gearshelps to improve the locking coefficient,but due to the differential’s volume and the gear-teeth defects,it is necessary to limit the eccentricity.Finally,the prototype is developed according to the design method of the non-circular gears,and the locking coefficient is measured to be 2.32,which is basically consistent with the result obtained from theoretical calculation.

关 键 词：非圆面齿轮 差速器 节曲线 锁紧系数 

分 类 号：TH132[机械工程—机械制造及自动化]