周转轮系

Kinematic and kinetic analysis problems are discussed using topological graph and signal current graph. Research on the generality of EGTs is completed elementally and the occurrence condition of circulated power in EGTs is derived.

8运用拓扑图和信号流图探讨运动学和动力学分析的问题，初步完成对周转轮系的共性方面的研究工作，讨论了周转轮系的循环功率产生条件。

The graphic method could very visually reveal the relation between the efficiency of H typed closed epicyclic train and each related transmission ratio, thus laid a foundation for reasonably determining the structural type of this kind of gear train and taking this as a base to carrying on the optimization design.

曲线图法可以非常直观地揭示H封闭式周转轮系效率与各有关传动比之间的关系，为合理确定该种轮系的结构型式，并在此基础上进行优化设计奠定了基础。

Epicyclic transmission ratio calculating basic approach is to reverse the law, that is, to the body plus a angular velocity, is the epicyclic gear train in the angular velocity of the tie bar.

周转轮系的传动比计算基本方法是反转法，即给整个机构加一个角速度，是周转轮系中系杆的角速度。

5Topological inversion is applied to solve the transition problems from topological graph to practical gear train mechanisms. Four variant directions of topological inversion is noted and topological inversion chart library is founded.

5运用拓扑反演解决了由轮系拓扑图过渡到实际轮系机构的转换问题，指出拓扑反演的四个变化方向，建立了周转轮系的拓扑反演图库。

Based on the graph theory model,the formula of freedom to calculate the new circle epicyclic gear trains is deduced.

基于图论模型，推导出了新的计算周转轮系自由度的公式，通过拓扑单元回路法提出了计算周转轮系传动比的新方法。

The selflock conditions and the selecting range of transmission ratio of power in closed epicyclic gear trains can be used in common differential gear trains, too.

本文基于啮合功率法推导出封闭周转轮系效率计算的统一公式，大大简化了封闭周转轮系效率计算难度。

Aim at twelve-bar kinematic chain with single joints,it combines topological graphs analysis with structure principle of mechanisms and method of innovative synthesis of epicyclic gear trains.

在将单铰运动链用于周转轮系创新综合方法的过程中，针对十二杆单铰运动链，将拓扑图分析和周转轮系创新综合的结构学原理及方法结合，得到了由十二杆单铰运动链生成的新型周转轮系的结构原型。

Based on predecessors research findings, the quality of different kinds of research techniques are compared and induced. Concerned with using graph to type and scale synthesis, topological graph based upon functional fractionation is presented, the combination, evolution and inversion regularities of epicyclic gear trains are researched in detail. The synthesis problems of general and overlapping EGTs are solved. The method may be applied into the innovation design of EGTs.

本文在前人的研究成果的基础上，比较归纳各种研究方法的优劣，考虑到将图应用于型综合和尺度综合两方面，提出基于功能离散法的拓扑图，深入研究周转轮系组合、演化、反演等规律，解决了一般和重叠式周转轮系的综合问题，可应用于周转轮系的创新设计。

By each gear wheel system is a fixed geometric axis is divided into a fixed axis and the epicyclic gear train, epicyclic gear train again planetary gear train and differential gear train.

按轮系中各齿轮的几何轴线是否固定分为定轴轮系和周转轮系，周转轮系又有行星轮系和差动轮系。

Therefore, in this paper a new mechanics method is studied, i. e. a group of equations were set up and solved by the equilibrium conditions of the couple system. The transmission ratio and the meshing efficiency calculation formula were derived by this method. According to the law of conservation of energy. Hence then the above profound problems are analyzed and solved in a simple way. epicyclic gear train ; couple system ; transmission ratio ; meshing efficiency

故根据平面力偶系平衡条件可以很方便地推导出轮系传动比和啮合效率公式，与其它方法[卜3]不同之处还在于，本文根据能量守恒定律，不需分析啮合功率的流向，便可解决啮合效率的计算问题。1理论基础1.1基本周转轮系的力矩关系式图1为常用的2K—H型基本周转轮系，当轮系匀速转动工作时，根据受力平衡条件，作用在▲图l 2K_H基本轮系三个基本构件上的力偶矩应满足以下关系式[1]：兰=簇=撬㈤一1一涅稍一1一涅稍

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。