Dynamics analysis and experimental study on a mining vehicle fitted with hydraulically interconnected suspension

Publication Type:
Journal Article
Qiche Gongcheng/Automotive Engineering, 2016, 38 (6), pp. 716 - 724
Issue Date:
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© 2016, Society of Automotive Engineers of China. All right reserved. In view of the problems of mining vehicles that stiffer leaf springs are commonly used due to heavier load, but too high a stiffness of spring may lead to the worsening of ride comfort; and because of significant load transfer to front axle in downhill braking on gallery with large slope, cracks in front axle often occur, a novel hydraulically interconnected passive suspension system matched with leaf spring is proposed for the first time in this paper. By installing four interconnected hydraulic actuators on vehicle suspensions, the system can provide desired stiffness and damping in both vertical and pitch modes respectively, and hence the original leaf spring can be designed to be softer for enhancing ride comfort. When braking on gallery the hydraulic system can provide anti-pitching moment to reduce the impact on front axle. The dynamic models for the hydraulic system and vehicle are built and the prototype of interconnected hydraulic suspension is designed, produced and installed on experimental vehicle. Both dynamics simulation on models and road tests on experimental vehicle are carried out with the results showing that simulation results well agree with test data, and the hydraulically interconnected suspension can effectively improve the ride comfort and anti-pitching ability of mining vehicles.
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