基于SolidWorks Simulation的圆捆机喂入辊设计与试验

Design and test of feeding roller of round baler based on SolidWorks Simulation

喂入辊对圆捆机作业效率有重要影响。为提高喂入效率,设计一款3叶单排形式的喂入叉,喂入辊主体滚筒长度为1370 mm,滚筒上分布23个喂入叉,喂入叉工作直径为550 mm。为避免作业过程中,喂入辊因强度不足或模态相近引起共振等导致损坏,使用SolidWorks软件对圆捆机进行设计并建立三维模型,使用SolidWorks Simulation软件对喂入辊进行有限元静力学和模态分析。分析结果表明:喂入辊最大位移为2.77 mm,变形量仅为0.5%,最大应力为378 MPa,小于考虑安全系数后的材料许用应力;影响最大的一阶固有模态角频率为1117.3 rad/s,与工作转速角频率(16.75 rad/s)相差较大,喂入辊不会发生共振现象。田间试验过程表明:圆捆机进料顺畅、不堵塞、进料干净,圆捆机所压秸秆草捆密度为161.4 kg/m^(3),成捆率为99.6%,生产率为23 t/h,喂入辊无损坏,喂入辊设计合理可靠。

Feeding roller has an important influence on the working efficiency of round baler.In order to improve the feeding efficiency and reduce the failure rate,a feeding roller with three feeding forks arranged in a single row is designed.The main drum length of the feeding roller is designed to be 1370 mm,with 23 feeding forks distributed on the drum,and the working diameter of the feeding forks is designed to be 550 mm.In order to avoid the problem of insufficient structural strength and resonance of the feeding roller in the process of working,a three⁃dimensional model and structure design of round baler is set up by using SolidWorks software,Statics and Modal Analysis of feeding roller is based on SolidWorks Simulation software.The result of analysis show that the maximum displacement roller is 2.77 mm,the deformation is only 0.5%,the maximum stress of the feeding roller is 378 MPa,which is less than the respective material strength limit.The first natural angle frequency is 1117.3 rad/s,which is very different from working angle frequency,that is 16.75 rad/s,so the feeding roller will not produce resonance phenomenon during working process.The field test process showed that the round baler had smooth feeding,no blockage,and clean feeding.The field test showed that the round baler feed was smooth,unblocked and clean.The straw bale density of the round baler was 161.4 kg/m^(3),the baling rate was 99.6%,the productivity was 23 t/h,the feeding roll was not damaged,and the design of the feeding roll was reasonable and reliable.