Analysis of Operating Conditions for Vibration of a Self-Propelled Monorail Branch Chipper

Yanchen Gong, Longlong Ren, Xiang Han, Ang Gao, Shuaijie Jing, Chunliang Feng and Yuepeng Song ()
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Yanchen Gong: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai’an 271018, China
Longlong Ren: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai’an 271018, China
Xiang Han: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai’an 271018, China
Ang Gao: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai’an 271018, China
Shuaijie Jing: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai’an 271018, China
Chunliang Feng: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai’an 271018, China
Yuepeng Song: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai’an 271018, China

Agriculture, 2022, vol. 13, issue 1, 1-22

Abstract: Aimed at the problems of difficult treatment, unreasonable utilization and serious waste of fruit tree residue, combined with the terrain and planting characteristics of hilly orchards, a self-propelled monorail branch chipper was developed. It can realize long distances and large ranges of crushing operations and debris tiling in the garden. Because the monorail branch chipper adopts the half-empty suspension support method, the moving operations and discontinuous cutting of branches can lead to vibration failures or hazards. In response to this problem, modal analysis of a track system with different numbers of nodes by ANSYS software showed that an increase in the number of track sections decreases the natural frequency of each order under the condition of rigid fixation of the support rods, and weakness of vibration is especially seen in sections 1–4, but after a certain amount, the vibrational change tends to level off. The number of lateral rods should be increased for distal short rail branches of less than four sections to reduce operational and operational vibration. The vibration level test results of field multi-condition and multi-point grinding operations showed that the static vibration amplitude of the crusher is basically the same as that of the mobile state. The vibration amplitude of the chipper is significantly increased when in the states from no-load to grinding operation, and the maximum vibration occurs in the left and right direction of the transverse rail, which provides a theoretical basis and optimization direction for further optimization of the single-track branch chipper operational stability problem.

Keywords: hilly mountain orchards; single-track wood chipper; vibrational characteristics; modal analysis (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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