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Open Access Issue
Design and test of the arc-shaped nail-tooth roller residual film recovery machine from the sowing layer
International Journal of Agricultural and Biological Engineering 2024, 17(1): 90-98
Published: 29 February 2024
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Residual films on the sowing layer produced after mulching in Xinjiang farmland, harm the sowing quality and root growth of crops. In this study, a sowing layer residual film recovery machine based on a radial plate arc-shaped nail-tooth roller structure was designed. Meanwhile, the key device structures were designed and the main working parameters were analyzed. Then, taking the working depth, the forward speed of the machine and the rotation speed of the nail tooth roller as the test factors, and the film collection rate and film intertwining rate as the test indicators, the single factor tests and the Box-Behnken response surface tests were carried out to evaluate the performance of the sowing layer residual film recovery machine. Consequently, the results showed that the order of significant factors was the working depth, the forward speed of the machine, and the rotation speed of the nail tooth roller. Besides, the optimal working parameters were determined, which the working depth, the forward speed of the machine, and the rotation speed of the nail tooth roller were 100 mm, 4.8 km/h, and 49.3 r/min, respectively. Moreover, the predicted value of the film collection rate was 69.20%. Finally, the verification test was taken with the optimal working parameter, and the results showed that the film collection rate was 66.84%, and the film intertwining rate was 1.39%. The relative error between the test value and the predicted value of the film collection rate was 3.40%. It indicated that the machine can perform the collection of sowing layer residual films. This study can provide a theoretical basis and reference for the design of new sowing layer residual film machines.

Open Access Issue
Research status and trend of key technologies of standardized orchard multi-functional operation platform
Journal of Intelligent Agricultural Mechanization 2024, 5(1): 31-39
Published: 15 February 2024
Abstract PDF (3.5 MB) Collect
Downloads:36

China is a major producer and consumer of fruits,with output and area consistently ranking first in the world. However,China's orchards have long faced complex environments,with traditional manual operations facing high costs,labor shortages,and low efficiency. With the establishment of standardized and large-scale orchards,traditional models are no longer suitable for the development of modern orchards. The multi-functional operation technology platform integrates the functions of picking,ditching,fertilization,spray,transportation,etc.,effectively improves the efficiency of orchard operations,saves costs,and becomes the key tool for the efficient development of modern forestry and fruit industry. This article introduces the structural composition and working principle of a multifunctional homework platform,mainly introducing the two key parts of the lifting structure and chassis system,and provide an overview of the development trends of standardized orchard operation platforms at home and abroad,from simple mobile platforms to scalable platforms,followed by a series of improvements such as navigation and automatic leveling systems. By comparing the characteristics and advantages of different types of orchard operation platforms,clarify the shortcomings of domestic multi-functional operation platforms,and summarize and analyze the main research focus of multifunctional operation platforms at home and abroad,focusing on automatic leveling technology In terms of general chassis technology,navigation obstacle avoidance technology,lifting technology,chassis passability technology,power system coordination and management technology,and system quality improvement technology,this paper explores the bottlenecks faced by the development of multifunctional work platforms in China,such as insufficient intelligence and informatization,and relatively lagging policy support. Finally,suggestions are proposed to address the development gap between China's homework platforms and foreign homework platforms,such as promoting standardization and standardization of orchard planting,and developing towards intelligence and informatization,in order to provide development ideas for high-quality mechanized operations in China's orchards.

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