The present invention relates to a yarder of a new structure which is formed to efficiently convey wood. According to the present invention, an internal combustion engine (30) and a winding drum (20) are connected to each other through an automatic transmission of which gears are automatically shifted in accordance with a load applied to the winding drum (20). Therefore, the yarder rotates the winding drum (20) with a strong force when the wood is heavy and rapidly rotates the winding drum (20) to rapidly convey the wood when the wood is light. Therefore, the present invention is capable of conveying the heavy wood with the small internal combustion engine (30) and prevents the conveying speed from unnecessarily being delayed when the lightweight timber is conveyed in order to efficiently convey the wood.
YARDER
24.08.2015
Patent
Elektronische Ressource
Koreanisch
IPC: | B66D Haspeln , CAPSTANS |
TOWER YARDER AND MATERIAL COLLECTION METHOD OF TOWER YARDER
Europäisches Patentamt | 2015
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