毕业论文 涡轮螺旋桨发动机主减速器的设计.doc

涡轮螺旋桨发动机主减速器的设计
摘要
涡轮螺旋桨发动机是是燃气涡轮发动机中的一种,它主要用于时速小于800千米的飞机,目前在中低速飞机和对低速性能有严格要求的巡逻、反潜、或灭火等类型飞机中得到了广泛的应用,因此具有重要的研究意义。另外由于涡轮螺旋桨发动机的螺旋桨直径比较大,转速远低于涡轮的速度,只有大约1000转/分,为使涡轮和螺旋桨都工作在正常的范围内,需要在它们之间安装一个减速器,将涡轮转速降至十分之一左右后,才可驱动螺旋桨。
本文就涡轮螺旋桨发动机的特点,分析发动机的原理和减速器的原理,设计涡轮螺旋桨的主减速器。本课题采用两级NGW行星齿轮串联传动,由太阳轮输入行星轮输出。根据行星齿轮传动的传动特点以及减速器的输入功率、总传动比,输出转速以确定行星齿轮减速器齿轮的齿数、模数、中心距。并确定齿轮轴的大小及强度校核,以及输入输出轴的设计与强度校核。为了使传动更加平稳,本课题都采用花键连接。以及根据主减速的特点选择润滑方式与润滑油。另外就是箱体与行星架的设计。
关键词:发动机原理,减速器原理,行星齿轮减速器,输入输出轴,花键、润滑
Propeller turbine engine main reducer design
Abstract
Propeller turbine engine is a gas turbine engine in a, it is mainly used for the speed of less than 800meters of aircraft, currently in the low-speed aircraft and on the low speed performance of the strict requirements of the patrol, anti-submarine, or fire and other types of aircraft has been widely used, so the study has important significance. The turboprop engine propeller diameter is relatively large, the speed is far lower than the turbine speed, only about 1000revolutions per minute, as the turbine and propeller are working in the normal range, need to be in between them the installation of a speed reducer, the turbine speed dropped to about 1/10, to drive the propeller.
The turboprop engine characteristics, analysis of the principle of engine and reducer principle, design of propeller turbine main reducer. The subject of the use of two NGW gear series transmission, composed of a sun wheel input ary gear output. According to the characteristics of transmission and the ary gear reducer input power, the total transmission ratio, output speed to determine the ary gear reducer gear teeth, modulus, center distance. And to determine the size and strength check of the gear shaft, and the input and output shaft design and strength check. In order to make the transmission more stable, this topic are connected by a spline. And according to the main reduction features a selection of lubrication and lubricants. The other is the box body and a ar