多轴齿形链系统曲线张紧约束布局设计及其张紧特性的研究

发布时间：2017-12-30 23:10

本文关键词：多轴齿形链系统曲线张紧约束布局设计及其张紧特性的研究　出处：《机械传动》2016年11期 　论文类型：期刊论文

【摘要】：曲线张紧是汽车发动机正时链系统的常见约束方式,其布局设计直接关系到正时链系统的振动特性、噪声特性、平顺特性。通过某款发动机正时齿形链系统设计实例,解析了三轴系统的链条张力特点,并进行了张紧器的张紧力与松边张力的定量描述。通过缸盖反拖系统试验台测试了不同转速条件下的张紧力,以及特定转速的曲轴转矩,得到了正时链系统的载荷循环特性。结果表明,在保证正时链系统动力性能的基础上,张紧约束应综合考虑吸纳正时链的磨损伸长,以及张紧力的施力方向,还要兼顾正时链的静强度安全裕度。研究结论对链条在汽车发动机中的应用具有重要意义,同时对多轴系的链传动系统设计也具有一定的借鉴作用。
[Abstract]:Curve tensioning is a common constraint mode in the timing chain system of automobile engine. Its layout design is directly related to the vibration and noise characteristics of the timing chain system. The characteristics of chain tension of a triaxial system are analyzed by a design example of an engine timing gear chain system. The tensioning force and the loose edge tension of the tensioner are quantitatively described. The tension force under different rotational speeds and the crankshaft torque at specific speed are tested by the cylinder head reverse towing system test rig. The load cycle characteristics of the timing chain system are obtained. The results show that, on the basis of ensuring the dynamic performance of the timing chain system, the tension constraint should take into account the wear elongation of the timing chain and the direction of the tension force. The conclusion is of great significance to the application of chain in automobile engine, and it can also be used for reference in the design of chain transmission system of multi-shafting.
【作者单位】：吉林大学链传动研究所;杭州东华链条集团有限公司;
【基金】：国家自然科学基金(51275207)
【分类号】：TH132.45
【正文快照】： 0引言齿形链是重要的机械基础件,经过特殊设计的齿形链可以显著减小多边形效应,因此在高速、重载、强磨损、大中心距工况下常选用双轴齿形链系统作为传动装置,并广泛应用于农业、轻工、食品、纺织等众多行业中[1]。但是,多轴齿形链系统在增加安全性能、减小结构尺寸、提高使用

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