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Design and test of the plant-correcting reel for harvesting lodging garlic plants

International Journal of Agricultural and Biological Engineering 2024年第1期17卷 59-68页

作者： Yuhua Li Chao Li Lupeng Liu Kai Zhou Jialin Hou College of Mechanical and Electronic Engineering Shandong Agricultural UniversityTai’an 271018ShandongChina College of Biosystems Engineering&Food Science Zhejiang UniversityHangzhou 310058China

Crops are prone to lodging with the decline of stem moisture and the intervention of other factors in the mature harvest period,such as garlic,which is difficult to harvest *** solve this problem,the plant-correcting reel for harvesting lodging garlic plants,bumped and deformed with plants many times to pull and lift them into a conveyor,is proposed in this *** analyzed the motion trajectory equation and key influencing factors of the reel and defined the lifting and plant-correcting stages as three processes of contact,stirring and *** example,the contact deformation model and system energy equations were established in the contact ***,in the stirring process,the garlic plant-correcting conditions were established through the dynamic simulation test analysis of garlic seedling trajectories and the deflection model of garlic stem was ***,in the release process,the expressions of rubber bars rotation and garlic plant offset bending curvature were constructed and the optimal number and distribution form of bars were ***,the mechanism and key operating parameters of the auxiliary lifting mechanism of the divider were *** the single-factor test,the influence of reel speed,forward speed and reel height on the success feeding rate was analyzed under different bars distribution forms;Through multi-factor experiments,the interaction contour map of various factors was *** reel speed,forward speed and reel height were 3 rad/s,3.5 m/s,and 540 mm,the feeding success rate was 98.73%.The optimization factors were tested and verified,which met the operational requirements of a high feeding success rate and low loss rate of garlic *** study combines laboratory virtual as well as field experiments and analyzes of trajectory of bars,contact deformation and deflection model of garlic plant,and reel rotation and garlic plant offset bending curvature to solve the problem of ga

关键词： feeding success rate lodging garlic harvesting reel plant model field test

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3D Visual plant models in Computational Fluid Dynamics Simulation of Ambient Wind Flow around an Isolated Tree

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Journal of Donghua University(English Edition) 2017年第2期34卷 304-309页

作者：王宇荣付海明 College of Environmental Science and Engineering Donghua University Shanghai 201620 China

plants can reduce the velocity of wind and wind erosion and prevent the movement of *** it may be extremely difficult to measure directly the aerodynamic characteristics of the airflow near the real vegetation in field experiments on account of restriction by many objective ***,numerous investigations have been carried out to study the efficiency of windbreaks by conducting wind tunnel experiments on simulated models or using computational fluid dynamics(CFD) simulation instead of field *** models are simplified at some level to be used for numerical simulation in existing *** is a little distortion of leaves in details if the tree canopy is regarded as a whole region which can have a certain influence on the CFD ***,one modeling approach that combines Visual Basic for applications(VBA) and computer aided design(CAD) technology is proposed to design 3D virtual plant *** tree models used for numerical simulation of wind flow around trees are more *** addition,this method can be applied for creating a 3D virtual vegetation *** is also more convenient to get the diversified biological indicators by digital plants in computer.

关键词： plant model virtual organ skeleton wind flow numerical simulation

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Configurable integrated maintenance system based on digital production model

Configurable integrated maintenance system based on digital ...

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2010 Chinese Control and Decision Conference

作者： Peng Li~(1,2),Yonggang Sun~3,Haibo Shi~1,Wenli Shang~1 1.Shenyang Institute of Automation,Chinese Academy of Science,Shenyang 110016,China 2.Graduate School of Chinese Academy of Science,Beijing 100049,China 3.Heilongjiang Tobacco Industry Co.,LTD,Harbin,133001,China

＜正＞To complement the insufficiency of real time and commonality in machine maintenance system,the 95th Standard Project（SP95） standard was adopted for digitized plant *** on the universal digital plant model,a configurable integrated machine maintenance system was built with advanced technology of real-time data collection and mobile ***-Oriented Architecture（SOA） was adopted for the machine maintenance system,and Windows Communication Foundation（WCF） was used to integrate ERP and Inventory System,which provides fluent data flow and information flow for machine maintenance *** key technologies and design of modules related to integrated machine maintenance system were discussed.A practical application in tobacco industry of China was constructed to prove the validity of the integrated machine maintenance system and its theory.

关键词： SP95 standard plant model preventive maintenance condition monitoring

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