液压传动

For there is no concrete mathematical expression to describe its complicate inner working process and theoretical calculation, and the movement of piston is a kind of nonlinear variable accelerated motion, we have to resort to computer technique to do theoretical research work.

油压夯管锤是高能量输出的油压马达，其工作性质是建立在流体力学、液压传动、运动学、动力学、机械学、波动力学等多学科基础上的流体机械，其内部工作过程和理论计算比较复杂，没有显示的数学表达式，而活塞的运动又是一种非线性的变加速的运动过程，因而，其理论研究必须借助电子计算机。

In order to make clamping and unclamping fast, make the traditionalwhorl into hydraulic transmission, the fixation of the activitypincers depend on embracing activity pincers body firmly throughfrictional force comes by the brake handle driving steel band brakelump.

为了实现快速夹紧与快速松开，将传统的螺纹改成液压传动，活动钳身的固定通过刹车手柄来带动钢带刹车块通过摩擦力来抱死活动钳身，从而实现活动钳身的快速移动，而夹紧力则由夹紧弹簧来保证。

In order to make clamping and unclamping fast, make the traditional whorl into hydraulic transmission, the fixation of the activity pincers depend on embracing activity pincers body firmly through frictional force comes by the brake handle driving steel band brake lump. That realizes the fast movement of the activity pincers body, while clamped strength guaranteed by clamping the spring.

为了实现快速夹紧与快速松开，将传统的螺纹改成液压传动，活动钳身的固定通过刹车手柄来带动钢带刹车块通过摩擦力来抱死活动钳身，从而实现活动钳身的快速移动，而夹紧力则由夹紧弹簧来保证。

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教学设备、教学仪器、教学模型、教育设备、数控模拟实验室设备、高性能数电模电实验室设备、 PLC编程实验台、气动PLC控制实验台、微机控制中央空调实验台、传感器技术实验室设备、汽车教学设备、帕萨特整车模型、程控示教板、军用越野汽车教具系列、汽车驾驶模拟系统；多媒体电教室、多媒体语音室、全数字语音室、语言学习系统、教学VCD系列、机械陈列柜系列、液压传动演示台、电机电气实验室、工程制图实验室、电机控制实验台、电子实验室设备、电工实验室设备、数电、模电实验室、微电接口实验室，电力拖动实验室、微机实验设备、中央空调实验设备、制冷制热实验设备、家电综合实验设备、教学挂图系列、教学黑板系列、财会模拟实验室、模拟银行实验室、医学教学模型、透明电梯实验台、透明电机模型、透明车床机床、高校专业实验台、电工实训室、电气实训室、单片机实训室、自控原理实训室、电力电子实训室、自动检测与转换实训室、过程控制实训室、电机原理实训室、电机维修维护实训室、可编程序控制器实训室、机电设备安装实训室、机电设备拆装实训室、电气自动化技术教研室、机电一体化实训室、数控教学实训室、数控加工实训室、楼宇自动化实验室、自动化设备陈列室、电子测量实验室、液压与气动实验室、工业仿真模型实验室、机电设备故障诊断与维修实训室、物理实验室设备、化学实验室设备、生物实验室设备、中学配套仪器。。。。。

To meet the need for courseware of CAI in teaching hydraulic systems, in this paper, we talk about the method of making FLASH movies to illustrate the principles of hydraulics.

利用Flash 软件的特色，针对液压传动CAI教学课件的需求，制作了准确、生动的Flash动画，直观地展示了液压元件和系统的原理和工作特性。

To meet the need for courseware of CAI in teachinghydraulic systems, in this paper, we talk about the method ofmaking FLASH movies to illustrate the principles of hydraulics.

利用Flash软件的特色，针对液压传动CAI教学课件的需求，制作了准确、生动的Flash动画，直观地展示了液压元件和系统的原理和工作特性。

The research interest in this thesis is focused on the hydraulic actuator development of dual clutch transmission for passenger cars. Firstly, the principle, structure, characteristics and prospects of DCT are introduced. Analyses and compares the structure, functions and characteristics of the different types of clutch control system.

本课题的研究工作以DCT自动变速器双离合器液压执行机构为研究对象，主要进行了以下几个方面的研究：首先，介绍了双离合器自动变速器的原理、结构、工作特点及其应用前景；对不同类型离合器执行机构的组成、功能及特点进行了分析比较；介绍了液压传动和控制相关知识。

It is the important tool of production among the oil field that the note gathers the pump, its design is qualified to influence the production efficiency of the oil field and production cost directly .

注聚泵是油田中重要的生产工具，说明了液压注聚泵所要解决的主要问题，高效节能，排量可调，液压传动在国民生产各部门占有相当的比重，它的合格与否直接影响到油田的生产效率和生产成本。

Two-step orthogonal toggle force-amplifying press driven by rod-less piston cylinder is introduced,the working principles and mechanical calculating formulas of the actual systems are given as well.

1引言目前现有的压力机几乎都采用液压驱动，但是液压传动的工作介质一般为矿物油，极容易因油液挥发及泄漏造成空气、地面等环境污染。

In this paper, ZL50 loader for the object to its line of hydraulic drive system design, the hydraulic system and the parameters of the calculation of a reasonable choice.

本论文以 ZL50 装载机为对象，对其行液压传动系统进行设计计算，并对液压系统各参数进行了合理的选择计算。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。