双定子力偶型液压马达与其转子径向受力特性  

Double-stator Couple Hydraulic Motor and Radial Force Characteristics of Rotor

作　　者：刘巧燕[1] 闻德生[1] 吕世君[1] 高俊峰[1] LIU Qiaoyan;WEN Desheng;LV Shijun;GAO Junfeng(College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]燕山大学机械工程学院,秦皇岛066004

出　　处：《农业机械学报》2019年第2期393-401,共9页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金项目(50975246)

摘　　要：提出了力偶原理液压马达,分别对不同作用形式下的3种力偶原理进行阐述,并以转子径向受力为出发点,分析了马达的叶片数与力偶的关系,得出叶片数为偶数的偶数作用液压马达以及叶片数能够被作用数整除的奇数作用液压马达才能称为力偶原理液压马达。最后以双定子力偶马达为例对转子的径向受力状况进行分析,建立双定子液压马达在4种不同工作方式下的转子径向受力数学模型,分析了马达在4种不同工作方式下的转子径向力特点,同时搭建实验平台对双定子力偶型液压马达样机进行了测试。结果表明,在4种不同的工作方式下,作用在转子上的径向力的大小以及作用位置均呈现周期性变化,且内、外马达差动工作时转子径向受力最小,内马达与外马达单独工作时分别次之,内、外马达联合工作时最大。Aiming at unbalanced radial force of hydraulic motor,the concept of couple hydraulic motor was proposed,which drove the rotor by a couple acting on the rotor,so that the rotor of the motor was subjected to the balanced radial pressure,the force condition of the rotating parts of the blade motor was improved and the service life of the motor was improved.The principle of three type’s couple hydraulic motor under different forms of action was elaborated.Based on the rotor radial force as the starting point,the relationship between number of blades and couple was analyzed in detail.Then it was got that even-acting hydraulic motor with even leaves and odd-acting hydraulic motor with number of blades can be divisible by the motor actions can only be called the couple hydraulic motor.Finally,the radial force of the rotor was analyzed with the double-stator couple motor as an example.The mathematical model of the rotor radial force of the double-stator hydraulic motor in four different working modes was established,and the characteristics of the rotor radial force of the motor under four different working modes were analyzed.And the experimental platform was set up.The results showed that in four different working modes,the radial force acting on the rotor and the position of the action were periodically changed,and the radial force of the rotor was the smallest when the internal and external motor was differentially working.When the inner motor and the outer motor worked separately,the radial force was the second,and the radial force was the largest when the inner and outer motors worked together.Through the experiment of the prototype,the correctness of the principle of double-stator couple hydraulic motor and the rationality of the design of motor structure were verified,which laid a foundation for the future research and development of the double-stator couple hydraulic motor.

关 键 词：力偶原理马达 双定子 径向受力特性 差动连接 

分 类 号：TH137.51[机械工程—机械制造及自动化]