摘 要
液力传动是基于流体力学的欧拉方程，它是利用流体的动能，即利用液力传动装置中叶轮内动量距的变化来传递和改变动能。其中动量是指液体质点点的质量m与绝对速度v的乘积mv，由于速度是矢量，所以动量也是矢量。动量矩是指动量与该点到旋转轴的垂直距离r的乘积，以L表示.液力传动用变矩器取代了机械传动中的离合器，具有分段无级调速能力。
液力偶合器的实质是离心式水泵与涡轮机的组合。主要由输入轴，输出轴，泵轮，涡轮，外壳，辅助腔及安全保护装置等组成.
在工作过程中，发动机带动与泵轮刚性连接的主动轴1旋转，其转速为，位于泵轮内的工作液体由于受到泵轮叶片的作用而获得能量，随泵轮一起旋转。离心力迫使液体向泵轮外缘流动，从而把发动机的机械能转变成泵轮内工作液的动能。
限矩式液力偶合器是各种型式偶合器中生产数量最多的一种类型，主要应用于采煤、运输、破碎和起重等设备中。
关键词：限矩式 液力传动 泵轮 涡轮
The Design of YOX450 Constant filling fluid coupling
Abstract
Hydraulic transmission is based on the Euler equations of fluid mechanics, it is the use of fluid kinetic energy , It uses hydraulic transmission device from the impeller changes in momentum transfer and change of kinetic energy. Momentum which is the little bit of the quality of the liquid mass m and the absolute velocity v of the product mv, is due to the speed vector, so is the vector momentum. Moment of momentum is the momentum of the point to the vertical axis of rotation multiplied by the distance r to L said. Hydraulic transmission with torque converter replaced the clutch in the mechanical transmission, stepless speed regulation with piecewise capacity.
Fluid coupling is essentially centrifugal pump and turbine combination. It mainly consists of the input shaft, output shaft, pump wheels, turbine, casings, auxiliary chamber and safety devices, etc.
In the course of the engine driven pump round of rigid connection with the initiative of a rotating shaft, the speed for the pump wheel is located in the work of the liquid due to pump round the role of the leaves get energy, together with the rotary pump wheel Centrifugal pump to force liquid to flow round the outer edge so that the engine of mechanical energy into hydraulic pump to work round the kinetic energy.
Centrifugal pump to force liquid to flow round the outer edge so that the engine of mechanical energy into hydraulic pump to work round the kinetic energy.
Key words: Moment-type restrictions Hydraulic transmission
Pump wheel Turbine
