波轮式洗衣机悬挂结构力学特性研究  

Mechanical Characteristics of Suspension Structure of Ripple Washing Machine

作　　者：孙震 陈海卫 牟秋启 熊明 史亚成 SUN Zhen;CHEN Haiwei;MOU Qiuqi;XIONG Ming;SHI Yacheng(School of Mechanical Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Wuxi Little Swan Electric Appliance Co.,Ltd.,Wuxi,Jiangsu 214028,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]无锡小天鹅电器有限公司,江苏无锡214028

出　　处：《轻工机械》2021年第3期37-42,共6页Light Industry Machinery

基　　金：国家自然科学基金(51205166)。

摘　　要：针对目前波轮式洗衣机设计过程中,吊杆悬挂点高度的确定缺乏系统性讨论,课题组进行了相关力学特性研究并提出了吊杆悬挂点高度确定方法。求解洗衣机各类刚体动能表达式、总势能与广义悬挂力,应用Lagrange方程建立系统振动模型;基于MATLAB中建立的仿真模型,针对洗涤状态,分析吊杆悬挂点高度对弹簧压缩量、吊杆倾斜角等方面影响,确定了悬挂点最大高度;针对脱水状态,分析吊杆悬挂点高度对盛水桶上下振幅、临界频率等方面影响,确定了悬挂点最小高度。结果表明:通过对洗衣机不同工作状态的力学特性分析,可确定吊杆悬挂点高度选取范围。课题组的研究可快速确定吊杆悬挂点高度区间,提高设计效率。Aiming at the lack of systematic discussion on the determination of suspender suspension point height in the design of ripple washing machine, the relevant mechanical characteristics were studied and the method for determining the height of suspender suspension point was proposed. The kinetic energy expression of rigid bodies, total potential energy and generalized suspension force of washing machine were solved, and the system vibration model was established by using Lagrange equation. Based on the simulation model established in MATLAB, for the washing state, the influence of suspension point height on the spring compression amount and the suspender inclination angle was analyzed, and the maximum suspension point height was determined;for dehydration state, the influence of suspension point height on the bucket amplitude and critical frequency was analyzed, and the minimum height of suspension point was determined. The results shows that through the analysis of mechanical characteristics of washing machine in different working states, the height range of suspender suspension point can be determined. This method can quickly determine the height range and improve the design efficiency.

关 键 词：洗衣机 振动模型 吊杆 悬挂点高度 LAGRANGE方程 

分 类 号：TM925.33[电气工程—电力电子与电力传动] TP391.9[自动化与计算机技术—计算机应用技术]