传动

This article introduces types and characteristics of vehicle's transmission,and analysed its current development,with detailed discussion on the research methods of epicyclical gear transmission at home and abroad,including the design methods of its transmission diagram which has two or three degree-of-freedom,the process of shifting gears which has multiple degree-of-freedom,the denotation method of joint element on the chart of equivalent lever,and the equivalent lever method in which the dynamic and kine...

介绍了车辆变速器的种类、特点与发展概况，对变速器中的机械传动部分，特别是行星齿轮传动的研究状况介绍的较为详细。对国内外关于2自由度、3自由度行星式变速器传动简图的设计方法，多自由度变速器的换档过程，利用等效杠杆法研究行星齿轮传动，等效杠杆图中接合元件的表示方法，利用等效杠杆的运动分析、力分析和运动分析方程，建立行星变速器相应分析的方程的基本情况作了介绍，并分析了各种研究方法的适应范围与优缺点。

In view of the defects in conventional engine throttle manipulator system,A digital throttle control scheme was put forward in the paper, the throttle handle mechanism and step motor transmission-mechanism was designed,the control program is compiled, and the computer control is realized by pushing and puling throttle handle to change fuel pump governor throttle opening.

0引言传统的发动机燃油泵油门操纵系统是由机械传动的，虽然结构简单，但存在很多缺陷：传动部件较多，更换任何附件后都必须重新调节整个系统的协调性，而且调节较为复杂；可靠性不高，存在传动死角；误差较大，不利于远程传动。

The traditional pin-cycloid planetary drive has a series of essential advantages such as small volume, light weight, wide range of speed ratio, high efficiency, and quiet operating as well. On the other hand, it has a natural weak point that the tumbler bearing, which supports the cycloidal gear on the arm is placed inside the cycloidal gear, therefore the size of the bearing is restricted due to the geometry of the gear.

摆线针轮行星传动具有体积小，重量轻，传动比范围大，传动效率高，传动平稳且可靠等一系列优点，但它也有一薄弱环节，即转臂轴承处于摆线轮上输出机构的内部，径向尺寸受到限制，从而限制了摆线针轮行星传动更充分地发挥其承载能力。

The method of kinematics analysis for four bar mechanism is used to the kinematics analysis of the roller chain drive,and the simulation of the driving process of the chain drive is carried out by an Windows program Curve of the instantaneous ratio is performed The computer simulation of the kinetic property of the roller chain drive is implemente

铰四杆机构的运动分析方法可用于链传动运动特性的精确分析，采用WINDOWS编程对链传动的运动过程进行了模拟，并对链传动瞬时传动比作出了曲线，实现了链传动运动特性的计算机模拟分析。

Referring to a great deal of literature, the methods of establishing the dynamicsimulation of driving drum and the model of finite element are researched using the method ofthree-dimensional entity modeling. The virtual prototype of the driving drum for belt conveyoris established based on its working and laden condition.

在查阅大量关于传动滚筒运动仿真模拟和结构有限元分析的文献基础上，本文研究了传动滚筒运动仿真和有限元模型的建立方法，采用三维实体建模技术，根据传动滚筒的工作条件和负载情况创建了带式输送机传动滚筒的虚拟样机。

In this paper, the electric-drive equipment is simplified in order to obtain its working status by computer to dispose the sampling values. AutoCAD is used to draw the circuit diagram of the electric-drive equipment; the further development tool ObjectARX2000 is used to develop the interface program in order to drive the static circuit diagram; the microcontroller is used to sample and transfer the samples to the PC; the Visual Basic is used to construct all the real-time instruction system of the DFll diesel locomotives electric-drive equipment.

本文对东风11的电传动系统进行了适当的简化，使其电路工作状态通过计算机对电压采样值的处理得到确定；用AutoCAD绘制了整个东风11电传动系统的电路图；利用二次开发工具ObjectARX2000开发出接口程序，实现了对AutoCAD所绘制电传动电路图的驱动；用单片机实现了采集装置，并与PC机通讯完成对电路状态的采集；采用VB编程实现了整个东风11型机车的电传动实时教学系统。

Hydraulic planer the advantages of a smooth drive, theintroduction of hydraulic drive, ram a uniform velocity,and canachieve variable speed; load capacity than the general mechanicaltransmission large Shaper;ram can be in any position toimmediately stop or start;Stage movement to apply the hydraulicdrive,feed rate can be in a certain range without adjustments;Machine done by hydraulic valve protection, are not too easy todamage the machine parts;Part of the oil is not easy to workwear, so long machine life;manipulating simple andconvenient.

液压刨床的优点是传动平稳，由于采用液压传动，滑枕的运动速度均匀，且可实现无级调速；负荷能力比一般机械传动的牛头刨床大；滑枕可以在任何位置上立刻停止或起动；工作台的进给运动也采用液压传动，进给量可以在一定范围内无级调整；机床由液压安全阀做保护，过载时不容易损坏机床的零部件；零件在油里工作不易磨损，因而机床寿命长；操纵简单，使用方便。

The point of this graduation design is the gearbox. The transmission system realizes a closed circuit which has three planet gear step. Its transmission principle is simple, reliable and it has high efficiency.

本毕业设计的重点是减速器的设计，该传动系统采用了三级行星齿轮传动，形成封闭的传动路线，传动原理简单、可靠、高效。

By contrasting and analyzing of various take-ups on belt conveyor . This design is mainly about automatic windlass tension station . Its drive part makes up into worm pair and gear driver . Windlass uses worm gear worm driving reel which binds wire rope to pull tight adhesive tape . In the meantime , it adopts the frequency conversion adjusting speed motor to control tensioning force .

通过对带式输送机各种拉紧装置的比较和分析，本设计主要是自动绞车式张紧装置的设计，其传动部分由蜗轮蜗杆传动和一对开式齿轮传动两部分组成，绞车用蜗轮蜗杆传动带动卷筒来缠绕钢丝绳，从而拉紧胶带，同时采用变频调速电机对张紧力进行控制。

Aimed at the problem of multi-motor system synchronized switching directionprocess control, this dissertation studied the reliability and stability of the wire winding system which directly influenced on stability of roller wire speed and performance of main axis transmission system. Mathematical model of transmission system is built, and main parameters of transmission system are designed byresearching each essential factor which influences sensitivity and precision of transmission system.

针对高速走线换向过程控制问题，分析了加工辊走线速度和主轴传动系统的性能对走线系统的安全性和稳定性的影响，建立传动系统数学模型，研究影响传动系统灵敏度、精度及抑制线速度扰动的各个要素，综合设计传动系统。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。