机械设计与研究
機械設計與研究
궤계설계여연구
MACHINE DESIGN AND RESEARCH
2009年
6期
22-24
,共3页
行星轮系%周转轮系%循环功率%啮合效率%自锁
行星輪繫%週轉輪繫%循環功率%齧閤效率%自鎖
행성륜계%주전륜계%순배공솔%교합효솔%자쇄
planetary gear train%epicyclical gear train%circulation power load%meshing efficiency%self-locking
将3K型行星轮系分解为3个简单的K-H型轮系单元,然后对这些单元进行运动分析和受力分析,列出方程组并求解.这种方法不仅可以求出每个构件的角速度和所受的力矩,整个轮系的功率流向也随之确定,而且还得到一个通用的效率公式.根据功率流向,发现轮系中存在的循环功率流就是这类轮系效率较低、甚至发生自锁的原因.同时,举例证明通过减小循环功率与输出功率的比值可以适当提高这种轮系的啮合效率,从而为这类轮系的改进和设计提出了一种新方法.
將3K型行星輪繫分解為3箇簡單的K-H型輪繫單元,然後對這些單元進行運動分析和受力分析,列齣方程組併求解.這種方法不僅可以求齣每箇構件的角速度和所受的力矩,整箇輪繫的功率流嚮也隨之確定,而且還得到一箇通用的效率公式.根據功率流嚮,髮現輪繫中存在的循環功率流就是這類輪繫效率較低、甚至髮生自鎖的原因.同時,舉例證明通過減小循環功率與輸齣功率的比值可以適噹提高這種輪繫的齧閤效率,從而為這類輪繫的改進和設計提齣瞭一種新方法.
장3K형행성륜계분해위3개간단적K-H형륜계단원,연후대저사단원진행운동분석화수력분석,렬출방정조병구해.저충방법불부가이구출매개구건적각속도화소수적력구,정개륜계적공솔류향야수지학정,이차환득도일개통용적효솔공식.근거공솔류향,발현륜계중존재적순배공솔류취시저류륜계효솔교저、심지발생자쇄적원인.동시,거예증명통과감소순배공솔여수출공솔적비치가이괄당제고저충륜계적교합효솔,종이위저류륜계적개진화설계제출료일충신방법.
In this paper the 3K type planetary gear train is first decomposed into three simple train units of K-H type;then these units are put into kinematic analysis and moment analysis,and finally the equations are listed and solved.Thus not only the angle speed of each component and its torque are extracted,but also it would be much more convenient to determine the power flow of the whole train,and meanwhile a new general efficiency formula is obtained.On the basis of the power flow,the circulation power is found in this kind of train.This is the cause of the low efficiency and even self-locking for this kind of epicyclic gear train.At the same time it has been demonstrated in this paper that the decrease of the ratio between the circulation power and the output power can increase the meshing efficiency of 3K type planetary gear trains.Thus a new method is presented for the modification and design of this kind of Epicyclic gear train.