Journal of Jilin University(Engineering and Technology Edition) ›› 2018, Vol. 48 ›› Issue (6): 1762-1769.doi: 10.13229/j.cnki.jdxbgxb20180654

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Method of rollover pre-warning for articulated loader

JIA Tuo1(),ZHAO Ding-xuan2(),CUI Yu-xin1   

  1. 1. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
    2. College of Mechanical Engineering, Yanshan University,Qinhuangdao 066004, China
  • Received:2018-06-21 Online:2018-11-20 Published:2018-12-11

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Abstract:

A rollover prewarning method for articulate loader is proposed. Firstly, the steering angle, boom lift angle, bucket rotation angle and boom cylinder pressure are measured. Second, with these information and using multi-body dynamics algorithm, the stability diagram is calculated, which is an enclosed plot in polar coordinates to show the rollover angles in different directions. Third, according to the slope angle and the relative orientation of the loader toward slop measured by gyroscope, the state point of loader stability is determined in the stability diagram. Finally, early warning is achieved by judging if the state point is close to the boundary of the stability diagram. The accuracy of stability diagram and the feasibility of early warning method are verified by the model experiments.

Key words: mechanical engineering, wheel loader, stability, rollover prewarning, multibody dynamics

CLC Number: 

  • TH113

Fig.1

Simplified model of loader and tires"

Fig.2

Sketch of working device"

Fig.3

Schematic diagram of tires displacement"

Fig.4

Calculation of slope angle and orientation angle"

Fig.5

IMU440CA-200 gyroscope"

Fig.6

Loader model diagram"

Fig.7

Comparison between theoretical calculation and experimental results"

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