INMATEH Agricultural Engineering最新文献

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FORCE ANALYSIS OF A ROTARY TILLER WITH A VERTICAL ROTATION AXIS 垂直旋转轴旋耕机的受力分析

INMATEH Agricultural Engineering Pub Date : 2024-04-23 DOI: 10.35633/inmateh-72-40

A. Tarverdyan, A. Altunyan, Аlbert Grigoryan

{"title":"FORCE ANALYSIS OF A ROTARY TILLER WITH A VERTICAL ROTATION AXIS","authors":"A. Tarverdyan, A. Altunyan, Аlbert Grigoryan","doi":"10.35633/inmateh-72-40","DOIUrl":"https://doi.org/10.35633/inmateh-72-40","url":null,"abstract":"The article considers the issue of updating the machines designed for the cultivation of near-trunk and near-vine spaces. From the prospect of complete satisfaction of the agrotechnological and technical requirements of the mentioned machines, the rotary tillers with vertical rotation axis are preferable, which, however, need to get structurally developed. On this account, it is recommended to select planetary mechanism with external gear as a driving mechanism, which enables to ensure high rotation numbers of the tiller in case of relatively low rotation numbers of the rotor. The kinematic analysis of the driving mechanisms has been conducted, analytical expressions have been derived, which enable to determine the trajectory, speeds and accelerations of the tiller’s blades depending on the frequency of rotor’s rotation and the gear ratio of the mechanism. Based on the analytical expressions resulted from the kinematic research of the mechanism force analysis of the rotary tiller has been conducted. The estimated expressions of the general resistance moment value applied to the shaft of the moving rotor of the machine, as well as the value of resistance moments generated on the planet gear (satellite) rotors have been derived, which enable to identify the optimal kinematic and geometric parameters for the mechanism and rotary through the theoretical calculation method ensuring the optimal values of traction resistance force and other force factors in conditions of the stated working rules.","PeriodicalId":514571,"journal":{"name":"INMATEH Agricultural Engineering","volume":"64 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140666926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DESIGN AND EXPERIMENTAL STUDY OF HORIZONTAL-SHAFT ROLLER-TYPE COTTON STALK PULLER BASED ON RESPONSE SURFACE METHOD 基于响应面法的水平轴滚筒式棉秆牵引机的设计与实验研究

INMATEH Agricultural Engineering Pub Date : 2024-04-17 DOI: 10.35633/inmateh-72-47

Dangqin Xue, Zhouming Gao, Jiaxi Zhang

{"title":"DESIGN AND EXPERIMENTAL STUDY OF HORIZONTAL-SHAFT ROLLER-TYPE COTTON STALK PULLER BASED ON RESPONSE SURFACE METHOD","authors":"Dangqin Xue, Zhouming Gao, Jiaxi Zhang","doi":"10.35633/inmateh-72-47","DOIUrl":"https://doi.org/10.35633/inmateh-72-47","url":null,"abstract":"In this paper, a new horizontal-shaft roller-type cotton stalk puller was designed to address the problems of weak research on cotton stalk pulling and harvesting machines, poor agronomic adaptability, and insufficient research. First, the physical and mechanical properties of cotton stalk were experimentally studied, the cotton stalk pulling force test was conducted and the moisture content and the bending characteristics of cotton stalk were evaluated. The test results showed that cotton stalk pulling force was positively correlated with the cotton stalk diameter and the bending characteristics were positively correlated with the moisture content but were not evidently influenced by the diameter. Second, with the missed pulling rate and pull-off rate as the evaluation indexes and three independent variables, namely, forward speed, linear speed of stalk pulling rod, and rotation speed of stalk pulling roller, as the influencing factors, a 3D response surface model was established. On this basis, the lack-of-fit term P (p = 0.3650) > 0.05 of the evaluation index—missed pulling rate P1—was acquired, and the P value of pull-off rate P2 was always smaller than 0.0001. Finally, the results demonstrated that the influence of various factors on the missed pulling rate of cotton stalk is significant and followed the order forward speed > linear speed of stalk pulling rod > rotation speed of stalk pulling roller; the significance level regarding the influence on the pull-off rate followed the order rotation speed of stalk pulling roller > linear speed of stalk pulling rod > forward speed. Through the parameter optimization analysis, the optimal parameter combination was obtained which coincide with the model optimization and prediction result. The proposed method provides a basis and experimental reference for studying cotton stalk harvesting machineries.","PeriodicalId":514571,"journal":{"name":"INMATEH Agricultural Engineering","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140690980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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