20.500.12556/RUL-173737 Primerjava učinkov spravila lesa s traktorjem z gozdarskim vitlom in traktorjem z gozdarsko prikolico Comparison of productivity of timber extraction using a tractor with a forestry winch and a tractor with a forestry trailer V raziskavi smo primerjali dva tehnološka sistema spravila lesa: spravilo s traktorjem z gozdarskim vitlom ter spravilo z gozdarsko prikolico s predspravilom opravljenim z gozdarskim vitlom. Raziskava je potekala v GGN Ruše, vključila pa je časovno študijo, meritve razdalj, prostornino bremen, porabo goriva ter izračune stroškov. Spravilo z vitlom je obsegalo 8 ciklov s povprečnim volumnom bremena 2,82 m³ na cikel in učinkovitostjo 12,20 min/m³ pri 440,15 m povprečni spravilni razdalji. Spravilo s prikolico je obsegalo 10 ciklov s povprečno količino bremena 4,75 m³ na cikel in učinkovitostjo 8,42 min/m³ pri 579,75 m povprečni spravilni razdalji. Pri tem je poraba goriva pri spravilu z vitlom znašala 0,91 l/m³, s prikolico 0,53 l/m³, strošek na delovno uro pa 36,78 EUR/du oziroma 43,79 EUR/du. Primerjava učinkovitosti med delovnima sistemoma je pokazala, da je glede na učinkovitost spravilo z gozdarskim vitlom smiselno uporabljati do 480 m spravilne razdalje, glede na stroške pa do 360 m spravilne razdalje. Na podlagi raziskave lahko zaključimo, da je spravilo lesa s prikolico brez predspravila mogoče le v primeru, da se traktor s prikolico premika tudi izven vlak. V tem primeru so na enoto proizvoda učinki višji in stroški nižji kot pri spravilu z vitlom. Z vključenim predpravilom, pa je spravilo lesa s traktorjem s prikolico smiselno uporabljati pri spravilnih razdaljah, daljših od 350 m. In the research, we compared two technological systems of timber extraction: extraction with a tractor with a forestry winch and extraction with a forestry trailer with preskidding carried out with a forestry winch. The research took place in the GGN Ruše, and it included a time study, distance measurements, load volume, fuel consumption, and cost calculations. Extraction with the winch comprised 8 cycles with an average load volume of 2.82 m³ per cycle and an efficiency of 12,20 min/m³ at an average extraction distance of 440.15 m. Extraction with the trailer comprised 10 cycles with an average load volume of 4.75 m³ per cycle and an efficiency of 8,42 min/m³ at an average extraction distance of 579.75 m. Fuel consumption in extraction with the winch amounted to 0.91 l/m³, with the trailer 0.53 l/m³, and the cost per working hour was 36.78 EUR/h and 43.79 EUR/h, respectively. The comparison of efficiency between the two working systems showed that, with regard to efficiency, extraction with a forestry winch is reasonable to use up to an extraction distance of 480 m, and with regard to costs, up to 360 m. On the basis of the research, we can conclude that timber extraction with a trailer without pre-skidding is possible only in the case that the tractor with the trailer also moves outside the skid trails. In this case, the output per production unit is higher and the costs are lower than in extraction with the winch. With pre-skidding included, timber extraction with a tractor with a trailer is reasonable to use at extraction distances longer than 350 m. gozdarska vitla gozdarska prikolica učinek poraba goriva forestry winch forestry trailer productivity fuel consumption true false false [Ž. Breznik, Ž. Dobnik] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-21 07:16:31 2025-09-21 07:16:35 2025-10-11 03:57:05 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*37(043.2)=163.6 265247 249788419 52616.pdf 52616.pdf 1 FB0212DC64A39A9FDDE3B9967DC7688C 2f41142521574c7516e1a7d9fe3fda904fe6fda37612d354362611303de4bb2a f686caa3-96a9-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=218389 Biotehniška fakulteta 0 0 0