基于TRIZ理论的红花丝盲采装置设计与试验  

Design of Safflower Filament Picking Device Based on TRIZ Theory

作　　者：曹卫彬[1] 焦灏博 刘姣娣 杨双平 陈棒棒 孙胃岭 CAO Weibin;JIAO Haobo;LIU Jiaod;YANG Shuangping;CHEN Bangbang;SUN Weiling(College of Mechanical and Electrical Engineering,Shihezi University,Shihezi 832000,China;College of Machine and Controlling Engineering,Guilin University of Technology,Guilin 541006,China)

机构地区：[1]石河子大学机械电气工程学院,石河子832000 [2]桂林理工大学机械与控制工程学院,桂林541006

出　　处：《农业机械学报》2018年第8期76-82,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：新疆生产建设兵团科技攻关项目(2015AB020)

摘　　要：针对红花花球分布层次不齐造成机械采收效率低等问题,设计一种红花丝盲采装置。通过分析人工手采摘红花丝的过程,利用TRIZ理论,建立红花丝采摘的物质-场模型,得出红花丝最佳采摘方案为利用采摘齿与红花丝碰撞的盲采。采用凸轮机构作为红花丝采摘的驱动机构,利用TRIZ理论的冲突矩阵对应的发明原理,对凸轮机构的结构进行改进,使凸轮机构完成红花丝的夹紧与拉拔两个驱动。设计了一种新的弧形采摘齿,解决了红花丝漏采难题。利用Creo软件建立红花丝盲采装置的三维模型,并研制样机进行试验,试验结果表明,当该装置前进速度为0.5 m/s,采摘齿转速大于6 r/s时,红花丝的采摘效果最佳,采净率约为90%。To improve picking efficiency of safflower filament harvesting device,a safflower filament harvesting device was developed based on TRIZ theory,which can pick safflower filament without the machine vision,called as safflower filament blind harvesting device. Through analyzing the whole process that people pick safflower filaments,the substance-field models of picking safflower filaments were built to guide how to design safflower filament picking device. The optimized picking method,as a result,was created according to that substance-field. This process existed that as they were moved without looking at safflower filament,two personal fingers were continuously opened and closed to pick safflower filament.Therefore,the probability that safflower filaments were picked without machine vision was very big.Through the above study,the safflower filament blind picking method was feasible. Force of personal fingers picking safflower filaments was flexible,so that the cam and spring mechanism were chosen as drive mechanism of the safflower filaments picking device to imitate soft drive system of personal finger picking safflower filaments. A general cam and spring mechanism only had an moving action along the one direction,however,there were necessary two actions to achieve the function of safflower filaments picking,which were clamping action and drawing action. Hence,a general cam and spring mechanism cannot satisfy the safflower filaments picking requirements. To solve that problem,the useful functions and harmful functions of a general cam mechanism were parameterized based on thirty-nine engineering parameters of TRIZ theory,and some principles to solve the problem were gained from the conflict matrix. The dynamic principle and reverse principle from the principles gained were applied to solve the above question. Finally,the existed cam structure can be changed,so that a new cam structure that the pushing bar rotates around the outline of the still cam can be created to simplify the structural complexity safflower fi

关 键 词：红花丝 采摘装置 弧形齿 TRIZ理论 

分 类 号：S225.99[农业科学—农业机械化工程]