计及铰链间隙的弹射式移栽机构非线性动力学特性分析

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (21) : 186-194.

论文

秦浙，钱孟波，龚剑伟，李希斌

作者信息 +

Non-linear dynamic characteristics of ejection transplanting mechanism with joint clearance

QIN Zhe, QIAN Mengbo, GONG Jianwei, LI Xibin

Author information +

文章历史 +

摘要

旋转式移栽机是当前的研究热点，该类移栽机结构简单、安全可靠，且能同时完成取苗，运苗和栽植的工作。然而目前的研究主要为功能设计，未考虑由于加工误差、设计精度等原因导致的铰链间隙问题。间隙会引起副元素之间的碰撞和振动，使得系统的约束条件，自由度数目和拓扑结构发生变化。因此，在研究移栽机构的动力学特性时，有必要考虑铰链间隙的影响。基于对副元素接触模式的划分，建立了间隙旋转铰接触力求解模型，并用Fortran语言编写了接触力的求解子程序，将其加载到了ADAMS函数求解库中，基于该程序对弹射式移栽机构模型进行了仿真和计算。结果表明，铰链间隙的尺寸不宜过大或过小，否则会导致副元素间剧烈的碰撞和振动。这项工作为提高含间隙移栽机构的控制精度提供了参考。

Abstract

Rotary transplanting mechanism is a current research hotspot, and it is simple in structure, safe and reliable, and can complete the work of picking, transporting and planting seedlings at the same time.However, current research mainly focuses on function design, the problem of joint clearance caused by machining error, design precision, etc.is not considered.The clearance can cause collision and vibration of pair elements in joint and variation of constraint conditions, number of DOF and topological structure of the system.So, the influence of joint clearance has to be considered when studying dynamic characteristics of a transplanting mechanism.Here, based on dividing contact modes of pair elements, the contact force solving model of a clearance revolute jointwas established.A solving subroutine for contact force was compiled with Fortran language, it was embedded into the function solving library of ADAMS.An ejection transplanting mechanism considering revolute joint clearance was simulated based on this subroutine.Results showed that the joint clearance should not be too large or too small, otherwise it can cause severe collision between pair elements and their vibration; the study results provide a reference for improving control precision of transplanting mechanisms with joint clearance.

导出引用

秦浙，钱孟波，龚剑伟，李希斌. 计及铰链间隙的弹射式移栽机构非线性动力学特性分析[J]. 振动与冲击, 2020, 39(21): 186-194

QIN Zhe, QIAN Mengbo, GONG Jianwei, LI Xibin. Non-linear dynamic characteristics of ejection transplanting mechanism with joint clearance[J]. Journal of Vibration and Shock, 2020, 39(21): 186-194

参考文献

[1] YE B L, JIN X J, YU G H, et al. Parameter modification guiding optimization design and tests of a rotary transplanting mechanism for rice plug seedlings[J]. Applied Engineering in Agriculture, 2015, 31(6): 863-873.
[2] 封俊，秦贵，宋卫堂，等. 移栽机的吊杯运动分析与设计准则[J]. 农业机械学报, 2002, 33(05): 48-50.
FENG Jun, QIN Gui, SONG Weitang, et al. The kinematic analysis and design criteria of the dibble-type transplanters[J]. Transactions of the Chinese Society for Agricultural Machinery, 2002, 33(05): 48-50.
[3] 张冕，姬江涛，杜新武. 国内外移栽机研究现状与展望[J]. 农业工程, 2012, 2(02): 21-23.
ZHANG Mian, JI Jiangtao, DU Xinwu. Status and Prospect of Transplanter at Home and Abroad[J]. Agricultural Engineering, 2012, 2(02): 21-23.
[4] GUO L S, ZHANG W J. Kinematic analysis of a rice transplanting mechanism with eccentric planetary gear trains[J]. Mechanism and Machine Theory, 2001, 36(11): 1175-1188.
[5] 陈建能，黄前泽，王英，等. 钵苗移栽机椭圆齿轮行星系植苗机构运动学建模与分析[J]. 农业工程学报, 2012, 28(05): 6-12.
CHEN Jianneng, HUANG Qianze, WANG Ying, et al. Kinematics modeling and analysis of transplanting mechanism with planetary elliptic gears for pot seedling transplanter[J]. Trans-actions of the Chinese Society of Agricultural Engineering, 2012, 28(05): 6-12.
[6] 叶秉良，俞高红，陈志威，等. 偏心齿轮-非圆齿轮行星系取苗机构的运动学建模与参数优化[J]. 农业工程学报, 2011, 27(12): 7-12.
YE Bingliang, YU Gaohong, CHEN Zhiwei, et al. Kinematics modeling and parameters opti-mization of seedling pick-up mechanism of planetary gear train with eccentric gear and non-circular gear[J]. Transactions of the Chinese Society of Agricultural Engineering, 2011, 27(12): 7-12.
[7] XIANG W W K, YAN S Z, WU J N. A comprehensive method for joint wear prediction in planar mechanical systems with clearances considering complex contact conditions[J]. Science China Technological Sciences, 2015, 58(1): 86-96.
[8] 刘创，刘宏昭，张磊，等. 考虑气氛环境的含间隙断路器传动机构磨损预测[J]. 振动与冲击, 2018, 37(18): 67-72.
LIU Chuang, LIU Hongzhao, ZHANG Lei, et al. Wear prediction of a circuit breaker transmission mechanism with joint clearances considering the atmosphere environment[J]. Journal of Vibration and Shock, 2018, 37(18): 67-72.
[9] 曹登庆，初世明，李郑发，等. 空间可展机构非光滑力学模型和动力学研究[J]. 力学学报, 2013, 45(01): 3-15.
CAO Dengqing, CHU Shiming, LI Zhengfa, et al. Study on the non-smooth mechanical models and dynamics for space deployable mechanisms[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(01): 3-15.
[10] VENANZI S, PARENTI-CASTELLI V. A new technique for clearance influence analysis in spatial mechanisms[J]. Journal of Mechanical Design, 2005, 127(3): 446-455.
[11] 尉立肖，刘才山. 圆柱铰间隙运动学分析及动力学仿真[J]. 北京大学学报(自然科学版), 2005, 41(5):679-687.
YU Lixiao, LIU Caishan. Dynamic simulation and kinetic description of revolute joint with spatial clearance[J]. Acta Scicentiarum Natur-alum Universitis Pekinesis, 2005, 41(5):679-687.
[12] 刘福才，兰会，刘林，等. 不同重力环境下含间隙旋转铰位置特性仿真研究[J]. 振动与冲击, 2018, 37(21): 240-246.
LIU Fucai, LAN Hui, LIU Lin, et al. Simulation for motion characteristics of rotating hinges with clearance under different gravity environme-nts[J]. Journal of Vibration and Shock, 2018, 37(21): 240-246.
[13] FLORES P. A parametric study on the dynamic response of planar multi-body systems with multiple clearance joints[J]. Nonlinear Dynamics, 2010, 61(4): 633–653.
[14] 王大燕，谢进，陈永. 含间隙翅翼机构的动力学仿真及研究[J]. 机械设计, 2010, 27(09): 66-71.
WANG Dayan, XIE Jin, CHEN Yong. Dynamic simulation and study of flapping-wing mech-anism with bearing clearance[J]. Journal of Machine Design, 2010, 27(09): 66-71.
[15] 谷勇霞，冯彬，江崔颖，等. 考虑关节间隙的空间机械臂臂杆振动特性研究[J]. 机床与液压, 2018, 46(05): 1-5.
GU Yongxia, FENG Bin, JIANG Cuiying, et al. Study on Vibration Characteristics of Space Manipulator with Joint Clearance[J]. Machine Tool & Hydraulics, 2018, 46(05): 1-5.
[16] DUBOWSKY S, GARDNER T N. Dynamic Interactions of Link Elasticity and Clearance Connections in Planar Mechanical Systems[J]. Journal of Engineering for Industry, 1975, 97(2): 652-661.
[17] YAN S Z, XIANG W W K, Zhang L. A comprehensive model for 3D revolute joints with clearances in mechanical systems[J]. Nonlinear Dynamics, 2015, 80(1-2): 309-328.
[18] YIGIT A S, ULSOY A G, SCOTT R A. Spring-Dashpot Models for the Dynamics of a Radially Rotating Beam with Impact[J]. Journal of sound and Vibration, 1990, 142(3): 515-525.
[19] SCHWAB A L, MEIJAARD J P, MEIJERS P. A Comparison of Revolute Joint Clearance Models in the Dynamic Analysis of Rigid and Elastic Mechanical Systems[J]. Mechanism and machine theory, 2002, 37(9): 895-913.
[20] JOHNSON K L. Contact Mechanics[M]. Camb-ridge university press, 1987.
[21] YAN S, GUO P. Kinematic Accuracy Analysis of Flexible Mechanisms with Uncertain Link Leng-ths and Joint Clearances[J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2011, 225(8): 1973-1983.
[22] BAI Z F, ZHAO Y, WANG X G. Wear Analysis of Revolute Joints with Clearance in Multibody Systems[J]. Science China-physics Mechanics & Astronomy, 2013, 56(8): 1581-1590.
[23] XIANG W W K, YAN S Z, WU J N, et al. Complexity Evaluation of Nonlinear Dynamic Behavior of Mechanisms with Clearance Joints by Using the Fractal Method[J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2014, 228(18): 3482-3495.
[24] 侯雨雷，井国宁，汪毅，等. 一种含间隙并联机构动力学仿真与混沌响应分析[J]. 机械设计, 2018, 35(04): 21-31.
HOU Yulei, JING Guoning, WANG Yi, et al. Dynamic simulation and chaotic responses ana-lysis of a parallel mechanism with clearance[J]. Journal of Machine Design, 2018, 35(04): 21-31.