井下动力马达非圆行星齿轮副的研究与设计

发布时间：2018-09-08 14:29

【摘要】：现有的井下动力马达的形式主要有涡轮马达、螺杆马达、电动马达和叶片马达。由于非圆齿轮在运动学、几何学方面独有的特点,使之能够满足任意变传动比传动要求,因此在各种机械中得到了越来越多的应用。上世纪80年代后另一种具有容积式马达原理的低速大扭矩液动马达结构被研制出来——非圆行星齿轮马达,该马达与其他液动马达相比性能有了大幅度提高。本文主要研究一种非圆行星齿轮液压马达(4-6型液压马达)的齿轮机构部分,其行星轮为圆柱形直齿轮,外齿轮与内齿轮的节曲线分别为4周期和6周期的平面曲线。本文对该马达机构原理应用于石油用井下液动马达制造研究的可行性作了分析;并在分析变中心距非圆行星轮系的基本运动关系的基础上推导了非圆齿轮曲线的方程式。通过研究,归纳、总结了三种实用的节曲线设计方法,采用Matlab语言进行编程计算,并生成或绘制非圆齿轮的节曲线的图形,通过这种方法简化了节曲线求解的计算过程。并以此为基础,简要叙述了双圆弧节曲线非圆行星齿轮机构的齿廓设计方法;重点分析了在已知行星轮为渐开线圆柱齿轮的条件下,齿轮啮合原理;并根据该原理推导出了与之啮合的非圆齿轮的齿廓上点的坐标值。并利用这些坐标值,在三维软件Pro/Engineer中建模,为进一步研究非圆行星齿轮井下马达的其它性能提供基础。
[Abstract]:The existing underground power motors are mainly in the form of turbine motors, screw motors, electric motors and blade motors. Due to the unique characteristics of non-circular gear in kinematics and geometry, it can meet the requirements of arbitrary variable transmission ratio, so it has been applied more and more in various kinds of machinery. Since 1980s, another low-speed and high-torque hydraulic motor with the principle of displacement motor has been developed-non-circular planetary gear motor. Compared with other hydraulic motors, the performance of the motor has been greatly improved. In this paper, the gear mechanism of a non-circular planetary gear hydraulic motor (4-6 type hydraulic motor) is studied. The planetary gear is a cylindrical spur gear, and the pitch curve between the outer gear and the inner gear is a plane curve with 4 cycles and 6 cycles respectively. In this paper, the feasibility of the application of the principle of the motor mechanism to the manufacture of oil downhole hydraulic motor is analyzed, and the equation of the non-circular gear curve is deduced on the basis of analyzing the basic motion relation of the variable center distance non-circular planetary gear train. In this paper, three practical design methods of nodal curve are summarized, which are programmed and calculated by Matlab language, and the figure of nodal curve of non-circular gear is generated or drawn. By this method, the calculation process of nodal curve solving is simplified. On this basis, the tooth profile design method of the non-circular planetary gear mechanism with double arc-joint curve is briefly described, and the meshing principle of the gear is emphatically analyzed under the condition that the planetary gear is known as involute cylindrical gear. According to this principle, the coordinate value of the point on the tooth profile of the meshing non-circular gear is derived. Using these coordinate values, the model is built in the 3D software Pro/Engineer, which provides the basis for further study of the other performance of the non-circular planetary gear downhole motor.
【学位授予单位】：中国地质大学（北京）
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.41

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