J. For. Sci., 2013, 59(7):267-271 | DOI: 10.17221/4/2013-JFS

Vertical force requirement for stump liftingOriginal Paper

I. Czupy1, E. Horváth-Szováti2
1 Institute of Forest and Environmental Techniques, University of West Hungary, Sopron, Hungary
2 Institute of Mathematics, University of West Hungary, Sopron, Hungary

In harvest areas the soil preparation is occasionally necessary before reforestation including the removal, collection and transportation of stumps from the soil. Issues related to climate change and the shortage of fossil energy sources call for an increased rate of renewable energy sources. Using the stumps removed from the soil as fuel is a significant resource for biomass. For lifting a stump together with its roots a grab mounted on a shovel is generally used. To rationalise this operation, analyses of stump lifting time have been carried out. We tested a machine mounting one grab for stump lifting on three tree types (Scots pine, robinia and poplar) and found functions correlating stump extraction force and stump diameter, which can be used in order to choose the right machine and determine the cost of the operation.

Keywords: bio-energy; stump diameter; stump extraction force; stump extraction machines; stump lifting

Published: July 31, 2013  Show citation

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Czupy I, Horváth-Szováti E. Vertical force requirement for stump lifting. J. For. Sci.. 2013;59(7):267-271. doi: 10.17221/4/2013-JFS.
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