基于有限元分析的动力驱动耙的设计与试验  

Design and Test of Power Driven Rake Based on Finite Element Analysis

作　　者：董成 尚书旗[1] 王东伟[1] 何晓宁[1] 赵泽龙 李绪 王海清 常学良 Dong Cheng;Shang Shuqi;Wang Dongwei;He Xiaoning;Zhao Zelong;Li Xu;Wang Haiqing;Chang Xueliang(College of Mechanical and Electrical Engineering,Qingdao Agricultural University,Qingdao 266109,China)

机构地区：[1]青岛农业大学机电工程学院,山东青岛266109

出　　处：《农机化研究》2024年第11期74-78,85,共6页Journal of Agricultural Mechanization Research

基　　金：山东省重点研发计划(重大科技创新工程)项目(2021CXGC010813)。

摘　　要：鉴于花生种植的土壤必须具备耕层深、土壤疏松、地面平整等特点,而旋耕机将土壤粉碎后不利于土壤保墒且耕深仅为8~15cm,为使翻耕后的土壤适合花生栽培,设计了1BQ-3动力驱动耙。为提高耙地工作稳定性,动力耙传动采用框架式齿轮箱多齿轮啮合传动方式,主要工作部件包括驱动耙碎土机构、传动机构、镇压机构和机架。对动力耙耙刀进行了运动学和动力学分析,探究了影响耙刀碎土切削阻力的主要因素,确定耙刀的滑切角为30°,并对动力耙耙刀等关键部件进行了重点设计。通过有限元分析,得出动力耙耙刀的最大应力、位移量、平均变形量。在青岛农业大学胶州试验基地进行田间试验,结果表明:在前进速度为2m/s、耙刀转速为300r/min时,耙刀碎土率为91.78%,耕深均值为26.3cm,可满足花生整地深度25cm以上的农艺要求及国家标准与花生栽植要求。Whereas the soil for peanut planting must have the characteristics of deep plough layer,loose soil,flat ground,etc.,while the soil crushed by rotary tiller is not conducive to soil moisture conservation and the ploughing depth is only 8-15cm.In order to make the ploughed soil suitable for peanut cultivation,a 1BQ-3 power driven rake is designed.In order to improve the working stability of the harrow,the power harrow is driven by a frame type gear box multi gear meshing transmission mode,and the main working components include the driving harrow breaking mechanism,transmission mechanism,suppression mechanism and frame.In this paper,the kinematics and dynamics of the power rake blade are analyzed,the main factors affecting the cutting resistance of the rake blade are explored,the sliding cutting angle of the rake blade is determined to be 30°,and the key components such as the power rake blade are emphatically designed.Through finite element analysis,the maximum stress,displacement and average deformation of the dynamic rake blade are obtained.The field experiment was conducted in Jiaozhou Experimental Base of Qingdao Agricultural University.The results showed that when the forward speed was 2m/s and the speed of the rake blade was 300r/min,the soil breaking rate of the rake blade was 91.78%,and the average tillage depth was 26.3cm,which could meet the agronomic requirements of peanut preparation depth of more than 25cm,as well as the national standards and peanut planting requirements.

关 键 词：动力驱动耙 SOLIDWORKS ANSYS 碎土率 

分 类 号：S222.219[农业科学—农业机械化工程]