Dragline Dynamic Modelling for Efficient Excavation
Overburden excavation is an integral component of the surface mine production chain. In large mines, the walking dragline is a dominant strip mining machine. Production engineers and operators must be guided by appropriate strategies to preserve the structural and operating performance of this equipment to justify its high capital investment. The dragline performance mainly depends on the spatial kinematics and dynamics of its front-end assembly. In this study, the authors developed the dynamic modelling of a dragline front-end assembly incorporating 2-D kinematics and bucket-formation interaction using numerical methods and dynamic simulation environment. Detailed analysis of the simulation results show that the maximum closure error from the model validation function is 4times10 E-8. The angular accelerations of the drag and hoist ropes are close to zero. The respective maximum drag, cutting and hoist forces are 100 kN, 200 kN and 75 kN. The results indicate machine health and longevity within the simulated conditions.
N. Demirel and S. Frimpong, "Dragline Dynamic Modelling for Efficient Excavation," International Journal of Mining, Reclamation, and Environment, Taylor & Francis, Apr 2008.
The definitive version is available at http://dx.doi.org/10.1080/17480930802091166
Mining and Nuclear Engineering
Natural Sciences and Engineering Research Council of Canada
Keywords and Phrases
Cutting Resistance; Dynamic Model; Kinematic Model; Simulation
Library of Congress Subject Headings
Article - Journal
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