力平衡型多输入齿轮马达的转矩特性分析与试验  

Analysis and test of torque characteristics for force balance and multi input gear motor

作　　者：闻德生[1] 潘为圆 石滋洲 商旭东 马光磊[1] 顾攀[1] 

机构地区：[1]燕山大学机械工程学院,秦皇岛066004

出　　处：《农业工程学报》2017年第10期94-101,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金资助项目(50975246)

摘　　要：针对传统齿轮马达径向力不平衡、只能输出一种转矩和转矩脉动较高的问题,提出了力平衡型多输入齿轮马达。该马达在一个壳体内有内、外两种马达,可通过不同的连接方式实现4种定转矩和定转速的输出。通过对马达的输出转矩进行理论计算和试验,分析了马达在4种工作方式下的瞬时转矩及转矩脉动,结果表明,单个马达工作时的转矩脉动与啮合齿轮的齿数有关。多个马达同时工作时的转矩脉动与齿轮啮合点的位置及脉动周期有关,当3个内马达共同工作,内、外马达共同工作,内、外马达差动工作时,在内、外马达脉动周期相同的前提下,可调节啮合点的位置,分别使3个小齿轮的轮齿啮合位置相差1/3,内、外马达轮齿啮合位置相差1/2,内、外马达轮齿啮合位置相同,通过瞬时转矩的叠加,使输出合转矩的脉动最小。试验结果表明,在调节齿轮啮合点的位置后,相同工作方式下的转矩脉动程度明显减少,该研究为多输入马达的进一步研究提供了参考。With the development of economy, hydraulic transmission is an indispensable part of national economy. Hydraulic actuator is the core part of hydraulic transmission, and the gear motor has the advantages of small size, light weight, and strong adaptability to the harsh working conditions, and has a very important role in hydraulic actuator. But gear motor＇s torque fluctuation is larger, and there are unbalanced radial force, trapped oil phenomenon and big noise, so it is difficult to develop. Based on these reasons, in this paper, a force balance type multi input gear motor is proposed, which has 3 internal motors and 3 outer motors in one case, the inner and outer motors are evenly distributed on the output shaft, and the radial force of the output shaft is balanced by the output shaft, which can significantly reduce the total force on the gear shaft and the bearing, and help to improve the service life and the mechanical efficiency of the bearing. Each motor has an independent oil distribution device, their work does not affect each other, and a motor can output 4 kinds of torques and rotational speeds through different connection modes as follows： The internal motor works independently, the outer motor works separately, the internal and external motors work together, and differential connection of internal and external motors. As an actuator, hydraulic motor＇s torque and rotational speed can be achieved with the function of the liquid pressure which the hydraulic pump provide, and the hydraulic motor output torque ripple is an important indicator to measure the performance of hydraulic motors. And it is an important index to measure the stability of hydraulic system. The torque ripple of a single gear motor is related to the number of teeth of the meshing gear, and when the motor rotates one tooth, the torque has a pulse. The force balance type multi input gear motor has a plurality of motors at work at the same time, which is different from the torque ripple produced by a single motor working. When the i

关 键 词：齿轮 马达 扭矩控制 力平衡 多输入 差动马达 转矩脉动 

分 类 号：TH137.51[机械工程—机械制造及自动化]