非圆行星齿轮液压马达设计系统

发布时间：2019-01-16 05:15

【摘要】：非圆行星齿轮液压马达是一种新型的低速大扭矩液压马达，，凭借其结构简单、尺寸小、重量轻、速度范围宽等显著优点，已在船舶甲板机械、塑料成型机械、建筑机械等领域得到广泛运用。非圆行星齿轮液压马达的核心机构是一个无系杆、变中心距非圆行星齿轮机构，设计过程中要受到诸多约束条件的限制，常常需要反复试凑和验算，令设计者望而却步。本文在研读大量相关文献、掌握非圆行星齿轮液压马达工作原理的基础上，推导出基本设计公式，建立了设计约束条件集合，将非线性目标规划方法引入非圆行星齿轮液压马达的设计，使非圆行星齿轮设计方法从传统的基于分析的设计发展为基于综合的设计，提高了非圆行星齿轮设计的科学性和一次成功率，从根本上扭转了由于非圆行星齿轮设计计算复杂困难而限制其广泛应用的局面。非圆行星齿轮液压马达的性能参数计算是本文的又一核心内容。首先推导出非圆内齿圈节曲线的近似解析表达式，为其它性能参数的计算提供了基础条件；进而解决了I型和O型两种工作形式液压马达的配油设计；运用计算和作图两种方法计算出马达排量；最后实现了非圆行星齿轮液压马达脉动率和变中心距非圆行星齿轮机构重叠系数的计算确定。在上述设计计算提供大量数据的基础上，本文在AutoCAD环境下实现了节曲线的绘制、配油孔的绘制、马达排量的确定、任意时刻行星轮运动位置的确定以及齿形的绘制，最终通过连续动画的方式实现了液压马达的运动仿真。本文开发的非圆行星齿轮液压马达设计系统将设计计算和图形功能有机结合在一起，完成了从节曲线设计、机构设计、性能参数计算、图形绘制直至运动仿真的非圆行星齿轮液压马达设计全过程，可用于蚌线、高阶椭圆两种节曲线；I型、O型两种工作方式；以及非圆外、内齿轮节曲线不同周期数的非圆行星齿轮液压马达设计，最后给出的多个应用实例演示了非圆行星齿轮液压马达设计系统的操作使用过程，展现了该系统的功能和实用价值。
[Abstract]:Non-circular planetary gear hydraulic motor is a new type of low speed and large torque hydraulic motor. It has been used in ship deck machinery and plastic forming machinery because of its advantages of simple structure, small size, light weight, wide speed range, etc. Construction machinery and other fields have been widely used. The core mechanism of non-circular planetary gear hydraulic motor is a non-circular planetary gear mechanism with no tie bar and variable center distance. The design process is restricted by many constraints, which often require repeated trial and error and checking calculation, which makes the designer prohibitive. On the basis of reading a large number of related documents and mastering the working principle of non-circular planetary gear hydraulic motor, this paper deduces the basic design formula and establishes the set of design constraints. The nonlinear objective programming method is introduced into the design of hydraulic motor of non-circular planetary gear. The design method of non-circular planetary gear is developed from traditional analysis-based design to integration-based design. The design of non-circular planetary gears is more scientific and successful at one time, which fundamentally reverses the situation that the design and calculation of non-circular planetary gears are difficult to be applied widely. The calculation of performance parameters of non-circular planetary gear hydraulic motor is another core of this paper. The approximate analytical expression of the non-circular inner gear ring joint curve is derived at first, which provides the basic conditions for the calculation of other performance parameters, and then solves the oil distribution design of the hydraulic motor of type I and O type. The motor displacement is calculated by two methods of calculation and drawing, and the calculation of the pulsation rate of hydraulic motor of non-circular planetary gear and the overlap coefficient of non-circular planetary gear mechanism with variable center distance are realized. On the basis of the large amount of data provided by the above design calculation, this paper realizes the drawing of the nodal curve, the drawing of the oil distribution hole, the determination of the motor displacement, the determination of the position of the planetary gear movement at any time and the drawing of the tooth profile under the environment of AutoCAD. Finally, the motion simulation of hydraulic motor is realized by continuous animation. The non-circular planetary gear hydraulic motor design system is developed in this paper, which combines the design calculation with the graphic function, and completes the design of the segment curve, the design of the mechanism, the calculation of the performance parameters. The whole design process of non-circular planetary gear hydraulic motor, which can be used for clam line and high order ellipse, can be used in the whole design process of non-circular planetary gear hydraulic motor until motion simulation. I type, O type two kinds of working mode; And the design of non-circular planetary gear hydraulic motor with different periods of non-circular outer and inner gear pitch curve. Finally, the operation process of non-circular planetary gear hydraulic motor design system is demonstrated by several application examples. The function and practical value of the system are demonstrated.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.425

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