Tilting stability analysis and experiment of the 3-DOF lifting platform for hilly orchards

Authors

  • Zhenhua Duan 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China; 2. Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China
  • Wei Qiu 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China; 2. Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China
  • Weimin Ding 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China; 2. Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China
  • Yande Liu Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China
  • Yuping Ouyang Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China
  • Liang Huang College of Engineering, Nanjing Agricultural University, Nanjing 210031, China

Keywords:

orchard-lifting platform, hills areas, tiling stability, influencing factors, analysis and experiment

Abstract

An orchard-lifting platform is a type of mechanical equipment to assist growers in fruit picking, fruit tree pruning, flower thinning, and other operations. In its operational processes, the tilting stability directly affects the operational safety and adaptability under complex terrain conditions, while critical tilting angle is an important criterion to evaluate the tilting stability. Based on the structure and the operating characteristics of the three degree of freedom (3-DOF ) lifting platform for hilly orchards, the tilting stability was analyzed in different parked states, and the theoretical expressions of critical tilting angle were obtained; in the theoretical expressions, the influencing factors on tilting stability were determined as the parked position β1, the manned worktable rotary position β2, the lifting height h, and the load m. Based on the multi-body dynamics principle, the tilting stability simulation was carried out. The relative error of tilting angles was approximately 4.6% between simulation and tilting verification experiment, which indicated that the results of tilting stability simulation were reliable. Therefore, the multi-body dynamics simulation was used for further clarifying the influencing factors on tilting stability. A virtual orthogonal test was designed, and the results showed that critical tilting angle ranged from 20° to 44° when the factors were at different values, which indicated that the 3-DOF lifting platform for hilly orchards had a high tilting stability performance and could adapt to the operating conditions of hills with slope angles from 5° to 20°. The results of the range analysis and ANOVA showed that the influence intensity of factors on tilting stability was β1 > h > m > β2; at the same time, β1, h, and m exerted significant effect on tilting stability. The tilting stability first decreased and then either increased or decreased with the increasing lifting height; it gradually decreased with the increasing load. It also showed that the position of the manned worktable along the slope down always had the lowest tilting stability. This research can provide a theoretical basis and reference for the analysis of tilting stability of the lifting machinery for hilly orchards. Keywords: orchard-lifting platform, hills areas, tiling stability, influencing factors, analysis and experiment DOI: 10.25165/j.ijabe.20181106.3523 Citation: Duan Z H, Qiu W, Ding W M, Liu Y D, Ouyang Y P, et al. Tilting stability analysis and experiment of the 3-DOF lifting platform for hilly orchards. Int J Agric & Biol Eng, 2018; 11(6): 73–80.

Author Biographies

Zhenhua Duan, 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China; 2. Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China

College of Engineering,doctor

Wei Qiu, 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China; 2. Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China

College of Engineering,associate professor

Weimin Ding, 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China; 2. Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China

College of Engineering,professor

Yande Liu, Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China

School of mechatronics & Vehicle engineering,professor

Yuping Ouyang, Co-Innovation Center of the Intelligent Management and Equipment for Orchard on the Hilly Land in South China, Nanchang, 330013, China

School of mechatronics & Vehicle engineering,lecturer

Liang Huang, College of Engineering, Nanjing Agricultural University, Nanjing 210031, China

College of Engineering,master

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Published

2018-12-08

How to Cite

Duan, Z., Qiu, W., Ding, W., Liu, Y., Ouyang, Y., & Huang, L. (2018). Tilting stability analysis and experiment of the 3-DOF lifting platform for hilly orchards. International Journal of Agricultural and Biological Engineering, 11(6), 73–80. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/3523

Issue

Vol. 11 No. 6 (2018): IJABE

Section

Power and Machinery Systems

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