Journal of Jilin University(Engineering and Technology Edition) ›› 2021, Vol. 51 ›› Issue (4): 1204-1212.doi: 10.13229/j.cnki.jdxbgxb20200372

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Analysis on retracting phenomenon of boom cylinder of loader under unloading condition

Peng TAN(),Xin-hui LIU,Wei CHEN(),Bing-wei CAO,Kuo YANG   

  1. College of Mechanical and Aerospace Engineering，Jilin University，Changchun 130022，China
  • Received:2020-05-27 Online:2021-07-01 Published:2021-07-14
  • Contact: Wei CHEN E-mail:tanpeng19@mails.jlu.edu.cn;Chenwei_1979@jlu.edu.cn

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Abstract:

This paper first analyzes the mechanism of retraction of boom cylinder, and then puts forward a method to solve the problem of boom cylinder retraction by optimizing the force multiplication coefficient of lifting mechanism based on ADAMS. The kinematic ADAMS simulation model of the working mechanism and the AMEsim simulation model of the working hydraulic system are built. Experiments are carried out to verify the correctness of the simulation model. After constructing the objective function and the constraint function, the new hinge point coordinates of the working mechanism are obtained through the optimization of ADAMS. Simulation and optimization results show that, under the premise of satisfying other working performances of the loader, the lifting mechanism force multiplication coefficient in the unloading condition is increased by 30.8%, and the retraction of the boom cylinder is reduced by 89.3%. This research provides a theoretical basis for the design of the future working mechanism.

Key words: wheel loader, retraction phenomenon, force multiplication coefficient, lifting mechanism, simulation and optimization

CLC Number: 

  • TH243

Fig.1

Experiment of boom cylinder retraction"

Fig.2

Pressure curve of boom cylinder without rod chamber"

Fig.3

Cylinder displacement curve"

Fig.4

Stress analysis of unloading condition"

Fig.5

Working cycle process"

Fig.6

Experimental curve"

Fig.7

Simulation curve"

Fig.8

Sensitivity analysis results"

Fig.9

Curve of force multiplication coefficient"

Fig.10

Curve of bucket closing angle"

Fig.11

Curve of unloading height"

Fig.12

Curve of unloading distance"

Fig.13

Curve of rocker arm transmission angle"

Fig.14

Curve of pull rod drive angle"

Table 1

Performance parameter values of working device"

参数初始值优化值
举升机构倍力系数0.130.17
平动性Δα/（°）11.8611.50
卸载角/（°）-44.89-45.09
卸载高度/mm3162.163167.79
卸载距离/mm1049.881080.00
摇臂传动角/（°）57.28~168.9956.69~160.00
拉杆传动角/（°）18.33~159.3216.60~162.47

Table 2

Design variable values before and after optimization"

设计变量初始值优化值
DV_1（Ay）/mm681.00684.50
DV_2（Ay）/mm935.50932.87
DV_4（By）/mm1613.501614.30
DV_7（Dx）/mm1195.001201.29
DV_8（Dy）/mm1558.501561.88
DV_10（Ey）/mm937.74927.61

Fig.15

Working device hydraulic system simulation model"

Fig.16

Simulation pressure curve of boom cylinder without rod chamber"

Fig.17

Simulation cylinder displacement curve"

Fig.18

Optimized pressure curve of boom cylinder without rod chamber"

Fig.19

Optimized cylinder displacement curve"

1 于向军,槐元辉,李学飞,等. 基于克里金和粒子群算法的装载机铲掘轨迹规划[J]. 吉林大学学报:工学版, 2020, 50(2):437-444.
Yu Xiang-jun, Huai Yuan-hui, Li Xue-fei, et al. Trajectory planning of loader excavation based on Kriging and particle swarm optimization algorithm[J]. Journal of Jilin University (Engineering and Technology Edition), 2020, 50(2): 437-444.
2 张英爽,王国强,王继新,等.轮式装载机半轴载荷谱编制及疲劳寿命预测[J]. 吉林大学学报:工学版, 2011, 41(6):646-651.
Zhang Ying-shuang, Wang Guo-qiang, Wang Ji-xin, et al. Compilation of half axle load spectrum and fatigue life prediction of wheel loader[J]. Journal of Jilin University (Engineering and Technology Edition), 2011, 41 (6): 646-651.
3 杨蓉, 林桂娟. 轮式装载机工作装置仿真设计与强度分析[J]. 南方农机, 2020, 51(1):15-17.
Yang Rong, Lin Gui-juan. Simulation design and strength analysis of the working device of the wheel loader [J] .Southern Agricultural Machinery, 2020,51 (1): 15-17.
4 Gui Ju, Cai Yuan. Dynamic simulation analysis on loader's working device[J]. Taylor & Francis, 2018, 16(20):1-7.
5 Wan Yi-pin. Structural strength analysis of the loader working device based on finite element method[C]∥ Proceedings of 3rd International Conference on Engineering Technology and Application,Lisbon, Portugal, 2016:787-792.
6 Shen Jun-li, Wang Guo-qiang, et al. A comprehensive genetic algorithm for design optimization of Z-bar loader working mechanism[J]. Springer Netherlands, 2013, 27(11): 3381-3394.
7 孟凡旺,焦圣德,张光耀,等. 装载机工作装置优化设计研究[J]. 建筑机械化, 2018, 39(2):26-28.
Meng Fan-wang, Jiao Sheng-de, Zhang Guang-yao, et al. Research on optimization design of working device of loader[J]. Mechanization of Construction, 2018, 39(2): 26-28.
8 郑德超,刘锋.装载机反转六杆式工作装置的优化设计[J].煤矿机械,2014, 35(10):19-20.
Zheng De-chao, Liu Feng. Optimized design of loader reverse six-bar working device[J]. Coal Mine Machinery, 2014, 35(10): 19-20.
9 Yang Hua-lin, Zhang Tong-qiang, Gao Gong-ru. Optimization design study of loader working mechanism based on MATLAB complex method[J]. Applied Mechanics and Materials, 2013,397-400:1034-1037.
10 戴文跃,梁昊. 装载机工作装置的动力学仿真与综合优化设计[J]. 吉林大学学报:工学版, 2004, 34(4):602-605.
Dai Wen-yue, Liang Hao. Dynamic simulation and comprehensive optimization design of loader working device[J]. Journal of Jilin University (Engineering and Technology Edition), 2004,34 (4): 602-605.
11 Wu Xiao-ming, Xiao Gui-xiang, Chen Rong. Comprehensive optimum design of working device of loader based on sensitivity[J]. Advance Materials Research,2012(490-495):3027-3031.
12 He Kong-de. Optimal design of the working device for loader based on virtual prototype technology[C]∥The 3rd International Conference on Mechanical Engineering and Mechanics,Beijing,China,2009:1479-1484.
13 Huang Cheng-yi. Dynamics modeling and simulation of loader working device under unloading condition[C]∥Proceedings of Joint International Conference on Artificial Intelligence and Engineering Applications, Wuhan, China,2016:492-497.
14 宋佰芝. 装载机工作装置现代设计方法研究[D]. 广州:华南理工大学机械与汽车工程学院, 2012.
Song Bai-zhi. Research on modern design method of loader working device[D]. Guangzhou: School of Mechanical and Automotive Engineering, South China University of Technology, 2012.
15 黄成毅. 基于Modelica的装载机工作装置仿真研究[D].杭州:杭州电子科技大学机械工程学院,2017.
Huang Cheng-yi. Simulation Research on loader working device based on Modelica [D]. Hangzhou: School of Mechanical Engineering, Hangzhou University of Electronic Science and Technology, 2017.
16 Han Hui-xian, Cao Xian-li. Analysis of the wheel loader hydraulic hybrid system based on braking energy recovery[J]. Applied Mechanics and Materials,2014, 687:171-174.
17 Zhang Wei-wei, Zhou Jun, Zhang Yan-liang, et al. Energy-saving analysis in the hydraulic system of loader working device[J]. Inderscience Publishers, 2012, 45(2/3):106-114.
18 杨占敏,王智明,张春秋. 轮式装载机[M]. 北京: 化学工业出版社,2006.
19 Wang Zhi-peng, Xie Xun, Li He, et al. Dynamic simulation and optimization design of the pendulum ring mechanism based on ADAMS[J]. International Journal of Plant Engineering and Management, 2014, 19(3):186-192.
20 Cui Qun-feng, Li Xu-rong, Wang Jian-zhang. The research of using step function to simulate the step-movement of forklift machine in mechanical engineering based on ADAMS[J]. Advanced Materials Research, 2013, 644:212-215.
21 李想,王加森,韩敬虎,等. 基于UG和ADAMS的高仿真咀嚼平台运动学仿真分析[J].现代制造工程,2017(2):35-39.
Li Xiang, Wang Jia-sen, Han Jing-hu, et al. Kinematic simulation analysis of high simulation chewing platform based on UG and Adams [J]. Modern Manufacturing Engineering, 2017(2): 35-39.
22 Pan Yong-jun, Zhang Chao, Yin Bang-hui, et al. Fuzzy set based multi-objective optimization for eight-rod mechanism via sensitivity analysis[J]. SAGE Publications, 2019, 233(2):333-343.
23 Li Xing, Chen Ya-zhou. Wheel loader working device optimization design based on the sensitivity analysis[J]. Advanced Materials Research, 2012, 1673:1745-1749.
24 Yuan Yong-liang. Parametric optimization design of auto-unloading mechanism based on Adams[C]∥MATEC Web of Conferences, Guangzhou,China,2018:175.
25 Yang Yong, Chen Qian-lin. Modeling and analysis of full hydraulic pressure drive system of the wheel loader based on AMEsim[J]. Applied Mechanics and Materials, 2013, 2658: 261-265.
26 Wilfrid Marquis-Favre, Eric Bideaux, Serge Scavarda. A planar mechanical library in the AMEsim simulation software. Part II: library composition and illustrative example[J]. Simulation Modelling Practice and Theory, 2005, 14(2):95-111.
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