随进式起草皮机振动起草皮装置研究  

Study on vibrating sod cutting device of pedestrian-controlled lawn sod cutter

作　　者：李怀勇 陈中 钱伟民 卜庆辉 Li Huaiyong;Chen Zhong;Qian Weimin;Bu Qinghui(Faculty of Mechanical&Material Engineering,Huaiyin Institute of Technology,Huai'an,223003,China;Jiangsu Key Laboratory of Advanced Manufacturing Technology,Huai'an,223003,China)

机构地区：[1]淮阴工学院机械与材料工程学院,江苏淮安223003 [2]江苏省先进制造技术重点实验室,江苏淮安223003

出　　处：《中国农机化学报》2024年第7期48-53,86,共7页Journal of Chinese Agricultural Mechanization

基　　金：江苏省科技计划项目(BY2016061—07);淮阴工学院博士科研基金项目(Z301B20502)。

摘　　要：为解决随进式起草皮机工作时草皮根部切割不规整导致的草皮移植存活率低、起草皮工作效率低的突出问题,研发设计一种基于振动机理的随进式起草皮机。通过分析草皮根部切割机理,设计由振动部件、起皮刀具和起皮刀具升降机构等核心部件组成的振动起草皮装置,并对该装置进行模态和谐响应分析,获取其固有特性、响应特性和受激振力最大的关键零部件形变和应力分布。结果表明:随进式起草皮机在动力源常用工作频率33.3 Hz激励下,振动部件最大形变的仿真位移为0.246 63 mm,试验位移为0.278 3 mm,误差率为11.38%。相同工况下,起草皮机改进后的工作效率提高6.8%,晾置5天平均移植存活率提高2.5%,晾置7天平均移植存活率提高4.2%。为振动起草皮装置的进一步优化设计提供理论依据和改进方向。In order to solve the outstanding problems such as low survival rate of sod transplantation and low working efficiency for sod cutting caused by irregular cutting of sod root,a pedestrian-controlled lawn sod cutter based on vibration mechanism is developed and designed.The cutting mechanism of sod root is analyzed,a vibrating sod cutting device composed of core components such as vibration components,sod cutter and lifting mechanism of peeling tools is designed,modal and harmonic response analysis on the device are carried out to obtain its inherent characteristics,response characteristics and the deformation and stress distribution of the key components with the largest excitation force.It is obtained that the maximum response simulation displacement of the vibrating parts is 0.24663 mm,the test displacement is 0.2783 mm,and the error rate is 11.38%under the excitation of 33.3 Hz,the common working frequency of the power source.Under the same working conditions,the working efficiency of the improved leather drafting machine is increased by 6.8%,the average transplant survival rate of 5 days after drying is increased by 2.5%,and the average transplant survival rate of 7 days after drying is increased by 4.2%.It provides theoretical basis and improvement direction for further optimization design of vibration drafting device.

关 键 词：随进式起草皮机 起皮机理 模态分析 谐响应分析 

分 类 号：S776.246[农业科学—森林工程]