基于参数化模型的零转弯半径割草机侧翻稳定性

doi:10.13229/j.cnki.jdxbgxb20200434

摘要/Abstract

摘要：

针对近年来零转弯半径（ZTR）割草机在横向坡道上频发的侧翻安全事故，基于准静态动力学理论，建立了一种坡道工况下能预测分析ZTR割草机失稳的参数化力学模型。根据割草机实际工作状态，加入了驾驶员因素以及不同规格割具在悬挂、牵引状态下对整车侧翻稳定性的影响。利用Matlab求解了理论侧翻预测方程，分析了不同工况下割草机横向载荷转移率与其侧翻敏感参数之间的关系，并利用ADAMS对割草机进行了多组仿真实验，进一步验证了参数化模型的准确性。通常，割草机底部配备悬挂割具可降低整车质心高度从而增强坡道稳定性。但通过实验发现，割草机底部配备牵引式割具比配备悬挂式割具的抗侧翻性能更强：其中配备1.2 m和1.8 m规格悬挂式割具的临界侧翻角较裸车分别提升了7%和10%；而配备1.2 m和1.8 m规格牵引式割具的整车临界侧翻角较裸车分别提升了9%和21%。根据这一特性，建议在设计农用或园林车辆的工作器械时优先考虑底部中置牵引结构，以提高各类车辆在斜坡上工作的安全性。

关键词: 农业工程, 零转弯半径割草机, 参数化力学模型, 侧翻预测方程, 割草机割具, 抗侧翻性能

Abstract:

In response to frequent rollover safety accidents on the transverse slope of the zero turning radius lawnmower in recent years， based on the quasi-static dynamics theory， a parametric mechanical model that can predict and analyze the instability of the ZTR lawn mower under ramp conditions is established. According to the actual working state of the mower， the driver factor and the influence of different specifications of cutting tools on the vehicle rollover stability under the suspension and traction state are added. The theoretical rollover prediction equation was solved using Matlab， and the relationship between the lateral load transfer rate of the lawnmower （M-LTR） and its rollover sensitive parameters was analyzed under different working conditions. Using ADAMS to conduct multiple sets of simulation experiments on the lawnmower， further verify the accuracy of the parameterized model. Through experiments， it is found that the traction cutter at the bottom of the lawn mower has stronger anti-rollover performance than the suspension cutter： the critical roll angle of the 1.2m and 1.8m suspension cutters is increased compared with the bare car about 7% and 10%； with 1.2m and 1.8m and specifications of the vehicle with traction cutting the critical roll angle are improved compared with naked car about 9% and 21%. According to this characteristic， it is recommended that when designing working instruments for agricultural or garden vehicles， priority is given to the bottom center traction structure to improve the safety of various vehicles working on slopes.

Key words: agricultural engineering, zero turning radius lawnmower, parametric mechanical model, rollover prediction equation, mower cutter, anti-rollover performance

中图分类号:

S224.1

王新彦,江泉,吕峰,易政洋. 基于参数化模型的零转弯半径割草机侧翻稳定性[J]. 吉林大学学报(工学版), 2021, 51(5): 1908-1918.

Xin-yan WANG,Quan JIANG,Feng LYU,Zheng-yang YI. Rollover stability of zero turning radius lawn mower based on parametric model[J]. Journal of Jilin University(Engineering and Technology Edition), 2021, 51(5): 1908-1918.

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参考文献 18

1	高敏, 周仁和. 坐骑式割草机设计要素及发展分析[J]. 中国科技信息, 2008(5): 67-68.
	Gao Min, Zhou Ren-he. Design elements and development analysis of mount mowers[J]. China Science and Technology Information, 2008(5): 67-68.
2	李立恒. 国内园林机械化绿化的发展应用现状[J]. 科技创新与应用, 2015(24): 161.
	Li Li-heng. Current status of development and application of domestic mechanized greening[J]. Science and Technology Innovation and Application, 2015(24): 161.
3	Lehtola C J, Marley S J, Melvin S W. A study of five years of tractor-related fatalities in Iowa[J]. Applied Engineering in Agriculture, 1994, 10(5): 627-632.
4	Molari G, Ayers P D, Meyer H J, et al. Special issue: engineering advances to improve the safety of agricultural machines[J]. Biosystems Engineering, 2019, 185: 1-3.
5	Harris C, Madonick J, Hartka T R. Lawn mower injuries presenting to the emergency department:2005 to 2015[J]. American Journal of Emergency Medicine, 2018, 36(9): 1565-1569.
6	Ayers P D, Khorsandi F K, Poland M J, et al. Foldable rollover protective structures: universal lift-assist design[J]. Biosystems Engineering, 2019, 185: 116-125.
7	司俊德, 王国强, 魏秀玲, 等. 工程车辆翻车时ROPS刚度、斜坡角度和安全带方式对人体损伤的影响[J]. 吉林大学学报: 工学版, 2010, 40(6): 1583-1588.
	Si Jun-de, Wang Guo-qiang, Wei Xiu-ling, et al. Effect of rops stiffness shope angle and seat belt restraint on operator injury in rollover of engineering vehicle[J]. Journal of Jilin University(Engineering and Technology Edition), 2010, 40(6): 1583-1588.
8	Hammig B, Childers E, Jones C. Injuries associated with the use of riding mowers in the United States, 2002~2007[J]. Journal of Safety Research, 2009, 40(5): 371-375.
9	Ahmadi I. Dynamics of tractor lateral overturn on slopes under the influence of position disturbances (model development)[J]. Journal of Terramechanics, 2011, 48(5): 339-346.
10	Seluga K J, Baker L L, Ojalvo I U. A parametric study of golf car and personal transport vehicle braking stability and their deficiencies[J]. Accident Analysis and Prevention, 2009, 41(4): 839-848.
11	麦莉, 宗长富, 高越, 等. 重型半挂车侧倾稳定性仿真与分析[J]. 吉林大学学报: 工学版, 2008, 38(): 5-10.
	Mai Li, Zong Chang-fu, Gao Yue, et al. Simulation and analysis of the roll stability of heavy semi-trailers[J]. Journal of Jilin University(Engineering and Technology Edition), 2008, 38(Sup.2): 5-10.
12	Guzzomi A L. A revised kineto-static model for phase I tractor rollover[J]. Biosystems Engineering, 2012, 113(1): 65-75.
13	Virginia B, Andrew L, Guzzomi A L. A model and comparison of 4-wheel-drive fixed-chassistractor rollover during Phase I[J]. Biosystems Engineering, 2013, 116(2): 179-189.
14	陈东辉, 吕建华, 龙刚, 等. 基于ADAMS的半悬挂式农业机组静侧翻稳定性[J]. 吉林大学学报: 工学版, 2018, 48(4): 1176-1183.
	Chen Dong-hui, Jian-hua Lyu, Long Gang, et al. Static rollover stability of semi-suspended agricultural units based on ADAMS[J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(4): 1176-1183.
15	陶金京, 廖敏, 潘群林, 等. 轮式拖拉机悬挂农具机组静态纵向稳定性[J]. 科学技术与工程, 2019, 19(34): 108-115.
	Tao Jin-jing, Liao Min, Pan Qun-lin, et al. Static longitudinal stability of wheeled tractor suspended farm machinery units[J]. Science Technology and Engineering, 2019, 19(34): 108-115.
16	Wang X, Gao L, Ayers P D, et al. The influence of the lift angle on the center of gravity measurements for zero turning radius mowers[J]. Applied Engineering in Agriculture, 2016, 32(2): 189-199.
17	Wang X, Ayers P D, Womac A R, et al. Sensitivity analyses and validation of continuous roll prediction model for front drive mowers[J]. Applied Engineering in Agriculture, 2007, 23(4): 455-461.
18	Wang X, Peng I M, Ayers P D, et al. Measurement of the moment of inertia for a zero turning radius mower[J]. Applied Engineering in Agriculture, 2016, 32(4): 323-332.

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