车载便携式农家肥捡拾装置设计与试验研究

针对农村畜禽养殖造成的环境污染问题,设计一种可快速拆装车载式农家肥捡拾装置,对其核心部件集送搅龙作机理分析与参数优化。通过分析装置使用环境特点及技术要求,综合物料受力及运动分析确定基础参数及结构,使用CATIA(Computer aided three-dimensional interactive application)作三维模型及数字样机构建;以搅龙螺旋直径、收集搅龙螺距以及搅龙主轴转速为变量,输送量与功耗为响应指标,作二次正交旋转组合EDEM(Engineering discrete element method)虚拟仿真试验。针对5 t·h~(-1)设计指标,理论分析与仿真获得搅龙参数组合为:搅龙螺旋直径200 mm、提升搅龙螺距160 mm、收集搅龙螺距120 mm、搅龙主轴转速107 r·min~(-1),功耗1.118k W。样机试验结果表明,分段式集送搅龙总体技术方案以及快速拆装形式可满足农家肥捡拾需求,具有良好使用环境适应性,研究为搅龙机构拓展应用提供借鉴与参考。

Design and experiment study on portable in-vehicle device of farmyard manure collecting

An in-vehicle collecting device which could be assembled and disassembled quickly was designed to solve the problem that the dung which was produced by livestock and poultry breeding was piled up on the road and ditches for a long time,which brought out a number of serious environmental pollution problems.Mechanism analysis and parameter optimization with its key part collecting and transporting auger were made.According to analyse of using environment features and the requirements of technology,basic parameters and structure could be confirmed by comprehensive material stress and motion analysis,three-dimensional model and digital prototyping could be made by using CATIA (Computer Aided Three-dimensional Interactive Application) software.The pitch of collecting auger,screw diameter of auger and rotational speed of auger were chosen as simulation experiment factors,conveying capacity and power consumption were chosen as response indexes,a quadratic orthogonal rotation EDEM (Engineering Discrete Element Method) virtual simulation experiment was designed.The theoretical analysis and simulation results showed that for 5 t· h-1 design index,the parameters of auger were as the followings:screw diameter of auger was 200 mm,the pitch of lifting auger was 160 mm,the pitch of collecting auger was 120 mm,rotational speed of auger main shaft was 107 r· min-1,and power consumption was 1.118 kW.The results of the prototype test showed that the overall technical scheme and the celerity assembly and disassembly form could meet the demand of manure,which also had good adaptability to the environment.The research provides an effective reference for the application and research.