小型航空发动机联轴器设计及应用
2021-09-10张旭东
张旭东





摘要:发动机联轴器对主动轴和从动轴同轴度、重量以及换向和变速时要求传动轴不能受到冲击力等方面有着更高的要求。为进一步满足小型航空发动机减重、简洁、可靠、经济的发展要求,提供了一种小型航空发动机联轴器设计方案并应用。有效的解决了主动轴和从动轴同轴度、机构重量和在换向与变速时传动轴不能受到冲击力的要求,结构简单,消除了换向间隙,提高联轴器的使用寿命和可靠性,并降低了制造成本。
关键词:联轴器;发动机;设计
Abstract: The engine coupling has higher requirements on coaxiality, weight of driving shaft and driven shaft, as well as the requirement that the transmission shaft should not be impacted when reversing and changing speed. In order to meet the development requirements of small aero-engine such as weight reduction, simplicity, reliability and economy, a design scheme of coupling for small aero-engine is provided and applied. It effectively solves the requirements of coaxiality of driving shaft and driven shaft, weight of mechanism and transmission shaft can not be impacted when reversing and changing speed. The structure is simple, eliminates the reversing clearance, improves the service life and reliability of coupling, and reduces the manufacturing cost.
Key words: coupling;engine;design
0 引言
联轴器是机械系统中的一类通用部件,可用于把来自不同机构的轴联接起来并传递扭矩令其共同旋转。联轴器的两端一般有安装边或者相应的联接结构。常用于联接主动轴与从动轴或者主动轴和回转件,传递扭矩、功率及转速。
联轴器可分为刚性联轴器和挠性联轴器两大类。刚性联轴器不具有缓冲性和补偿两轴线相对位移的能力,要求两轴严格对中,但此类联轴器结构简单,制造成本较低,装拆、维护方便,能保证两轴有较高的对中性,传递转矩较大,应用广泛。常用的有凸缘联轴器、套筒联轴器和夹壳联轴器等。
挠性联轴器又可分为无弹性元件挠性联轴器和有弹性元件挠性联轴器。无弹性元件挠性联轴器具有挠性即具有补偿两轴线相对位移的能力,故可补偿两轴的相对位移。但因无弹性元件,所以不能缓冲减振,常见的有滑块联轴器、齿式联轴器、万向联轴器和链条联轴器等。……
