吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (3): 857-863.doi: 10.13229/j.cnki.jdxbgxb201503025

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Study on the characteristics of steering system for high clearance sprayer based on rigid-flexible coupling simulation model

YANG Fang-fei1, YAN Guang2, HAO Yun-xiao1, LIU Ke-ge1   

  1. 1.Beijing Aircraft Strength Institute,Beijing 100083, China;
    2.School of Instrumentation Science and Opto-Electronics Engineering, Beijing Information Science & Technology University,Beijing 100192, China
  • Received:2014-06-09 Online:2015-05-01 Published:2015-05-01

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Abstract: The rigid body dynamics is widely used in current research of the digital prototype of agricultural equipment without considering the mutual coupling problem between the large displacement of component movement and small displacement of the structural deformation. For the complex dynamic characteristics of steering system in high clearance boom sprayer, a digital prototype of steering system is established with flexible part of steering hydro-cylinder fixation. The influence of the flexible-body fixation in the steering system on its performance is researched. The kinematics and dynamics characteristics of the rigid-flexible coupling influence component movement are revealed. Compared with whole rigid components, the results show that the maximum angular displacement, angular velocity and contact force at hinged place are increased dramatically considering the rigid-flexible coupling. Analysis results of equivalent stress and translational displacement show that the strength of the flexible fixation meets the application requirements.

Key words: mechanical design, high clearance sprayer, steering system, flexible-rigid coupling, steering characteristics

CLC Number: 

  • TH113.2
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