摘要
为了减小乳化液泵在高压动载荷工况下连杆的惯性力,采用凯恩法建立了三柱塞式乳化液泵的动力学模型,分析泵的惯性力的变化。借助MATLAB编程,绘制连杆惯性力随曲轴转动时间的变化曲线。将SolidWorks中建立的三柱塞式模型导入ADAMS软件,并进行动力学分析。ADAMS仿真分析结果与利用凯恩法建立的理论模型结果基本一致,验证了凯恩法分析计算的正确性。基于凯恩法,分析了曲柄与连杆的长度比λ、曲轴驱动角速度ω对连杆惯性力的影响。结果表明:曲柄长度不变,λ的变化会影响连杆的质量和质心加速度。λ增加,质量减小,连杆质心加速度增加,但λ对质量的影响更大,导致连杆惯性力减小;曲轴驱动角速度ω增加,连杆的惯性力出现振荡,并且振荡幅值越来越大,振荡频率也增大。适当增加λ,减小ω,能够减小连杆惯性力,提高连杆的工作性能。
In order to decrease the inertial force of connecting rod of emulsion pump under the high-pressure dynamic load,the Kane method is used to establish theoretical dynamical model of the three-plunger emulsion pump,and substitute relevant dimensions of the three-plunger emulsion pump,and deeply study the change of inertial force of pump.With the help of MATLAB software,the curve of the inertial force of the connecting rod that changes with the rotation time of crank is drawn.The SolidWorks model is imported into the ADAMS software for dynamic simulation.The results show that the ADAMS simulation analysis results are basically consistent with the theoretical model established by the Kane method,and the correctness of the method is verified.Based on the Kane method,the impact of the length ratio of the crank to the connecting rod,calledλ,the cranking angular velocity,calledω,on the inertial force of the connecting rod are analyzed.The results show that when length of crank is constant,increasedλ,inertial force increases.This is becauseλhas a greater impact on mass than acceleration of mass center.The angular velocity of crank which is calledωincreases,the inertial force of connecting rod oscillates,and the amplitude of the oscillation becomes larger and larger,which is deduces that the oscillation frequency increases as well.According to the results,increasing theλappropriately and decreasingωcould reduce the inertial force of the connecting rod and improve the working performance of the connecting rod.
作者
杨文斌
李晶
付莎莎
YANG Wenbin;LI Jing;FU Shasha(School of Mechanical and Electrical Engineering, Xi′an Polytechnic University, Xi′an 710048, China)
出处
《西安工程大学学报》
CAS
2019年第6期649-654,共6页
Journal of Xi’an Polytechnic University
基金
陕西省自然科学基础研究计划项目(2017JM5141)
