水田激光耙浆平地机振动特性研究  

Study on Vibration Characteristics of Laser Leveler Installed on a Tillage Machine in Paddy Field

作　　者：孙启新[1] 陈书法[1] 杨进[1] 芦新春[1] 

机构地区：[1]淮海工学院机械工程学院,江苏连云港222005

出　　处：《农机化研究》2016年第11期28-33,共6页Journal of Agricultural Mechanization Research

基　　金：苏北科技发展计划项目(BN2014020);连云港市农业攻关项目(CN1413)

摘　　要：激光耙浆平地机代表了水田耕整机的智能化和精准化发展方向,如何提高其作业精度是当前研究的重点,而激光信号接收精度是保证水田耕整机作业精度的关键因素之一。为此,从整机角度出发,分析了其振动特性对激光信号接收精度的影响。耙浆平地机是自由振动和受迫振动的耦合,振动给激光接收器和支撑杆带来较大的空间摆动,造成接收器偏离激光信号。根据动力学方程和四参数法建立双层隔振模型,采用模糊优化方法对隔振系统进行优化求解,在此基础上完成隔振系统结构设计。试验结果表明:该隔振系统可有效地降低整机振动对支撑杆的激励,支撑杆摆角从25°减小到2°左右,激光接收器横向振动振幅控制在6cm以下,隔振系统传递率稳定。Laser leveler installed on a tillage machine in paddy field means the development direction of agricultural e -quipment .The accuracy improvement of laser signal receiving is one of the key factors for its popularisation .In this pa-per , the factors which influnced laser signal receiving accuracy were analysised on the basis of the characteristics of mul -tifunction tillage machine .Laser leveler installed on a tillage machine was the coupling of free vibration and forced vibra -tion which drove the the laser receiver fixed on stand bar swing .Firstly,the model of vibration isolation system was built based on the kinetic equations and four-pole parameters theory .Secondly , fuzzy optimization method was used to optimize the vibration isolation system .Thirdly , according to the system model , the structure desgin of vibration isolation system was achieved.Finally,a test was designed to verify the vibration isolation system upon vibration test stand .The prediction results showed that the vibration isolation system was reliable to laser leveler installed on a tillage machine .The lateral amplitude of the receiver was less than 6mm,and the swing angle of the supporting rod was reduced from 25 to 2 degrees.

关 键 词：激光 耙浆平地机 振动 四参数法 隔振系统 

分 类 号：S222.51[农业科学—农业机械化工程]