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Efficiency of Timber Jack 450C with different loading volumes in different slopes
Majid Lotfalian1, Hasan Sam Daliri, Yahya Kooch
1Department of Forestry, Faculty of Natural Resources, P.O. Box 737, Sari, Islamic Republic of Iran.
Pakistan Journal of Biological Sciences : PJBS
|December 20, 2008
Summary
Timberjack 450C skidding operations in Iran are costly. While loading volume doesn't significantly impact travel time, increased slopes drastically reduce skidder speed, impacting efficiency.
Area of Science:
- Forestry Engineering
- Logging Operations
- Transportation Engineering
Background:
- Skidding operations, particularly with the Timberjack 450C, represent a significant cost in Iranian forestry.
- Understanding factors affecting skidding efficiency is crucial for optimizing resource management and reducing operational expenses.
Purpose of the Study:
- To investigate the effects of slope and loading volume on the loaded traveling time of Timberjack 450C skidders.
- To analyze the efficiency of skidding operations in relation to varying terrain gradients and load sizes.
Main Methods:
- Time study methodology was employed on a Timberjack 450C skidder in a forest area in North Iran.
- Data on loaded traveling time were collected across five slope classes and three loading volume classes.
- Statistical analyses, including ANOVA, Tukey test, and Mann Whitney non-parametric test, were used to evaluate the impact of slope and loading volume.
Main Results:
- Loading volume was found to have an insignificant effect on the loaded traveling time.
- Slope significantly influenced loaded traveling speed, with speeds decreasing notably on slopes exceeding 30%.
Conclusions:
- Optimizing skidding routes to minimize travel on steep slopes is essential for improving Timberjack 450C operational efficiency.
- While load size is less critical, managing slope exposure is key to reducing skidding time and costs in forestry operations.
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