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Upravičenost potrebe pomočnika na skladišču ob kamionski cesti pri traktorskem spravilu lesa
Kržič, Miha (Author), Krč, Janez (Mentor) More about this mentor... This link opens in a new window, Pezdevšek Malovrh, Špela (Co-mentor)

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Abstract
V proizvodnem procesu pridobivanja okroglega lesa, v primerih specifičnih prevoznih razmer ali zahtev kupcev lesa, prihaja do potreb po zagotavljanju krajših sortimentov. Pri traktorskem spravilu lesa je vlačenje dolgih sortimentov hitrejše in cenovno ugodnejše zato traktoristi, ob potrebi po kratkih sortimentih, opravljajo dodelavo na pomožnem skladišču ob kamionski cesti. V raziskavi se je presojalo možnost uvedbe pomočnika, ki bi izvajal dodelavo na pomožnem skladišču in s tem zvišal učinke spravila lesa s traktorjem. Na podlagi časovne študije se je ugotovilo, da je delež neproduktivnega časa pri delu brez pomočnika 26,53 % delovnega časa, pri delu s pomočnikom 37,81 % delovnega časa traktorista. Z uvedbo pomočnika se zniža poraba časa za spravilo tone lesa. Strošek delovne ure je pri spravilu brez pomočnika 42,81 €, pri delu s pomočnikom pa 60,79 €. V analiziranih delovnih pogojih, pri spravilu navzdol s traktorjem John Deere 6230 in povprečnemu posekanemu drevesu 3,02 m3 je stroškovno upravičena uvedba pomočnika do razdalje vlačenja 231,8 metrov pri razdalji zbiranja 15 metrov, razdalji vlačenja 183,6 metrov pri razdalji zbiranja 30 metrov in pri razdalji vlačenja 95,9 metrov in razdalji zbiranja 45 metrov.

Language:Slovenian
Keywords:traktorsko spravilo, pomočnik, pomožno skladišče, časovna študija, ekonomika
Work type:Bachelor thesis/paper (mb11)
Organization:BF - Biotechnical Faculty
Year:2018
COBISS.SI-ID:5180070  Link is opened in a new window
Views:704
Downloads:201
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Secondary language

Language:English
Title:Assessment of the need for a helper on auxiliary storage place when conducting tractor skidding
Abstract:
In forestry production, it is necessary to produce short logs in cases of specific skidding or transportation conditions or needs of wood customers. In tractor skidding, it is cheaper and easier to use the half-tree method of skidding than the cut-to-length method. The tractor operator usually skids long logs and cuts them in the auxiliary storage place. We tried to determine the need of helper in the auxiliary storage place for unhooking and cutting. Time study show that the delays take 26,53 % of work-time without the helper and 37,81 % of the tractor operator’s work-time in work with helper. The amount of time needed to skid ton of wood is lower when using helper in auxiliary storage place. The man-hour cost for tractor skidding when the tractor operator cuts logs is 42,81 € compared to the price of 60,79 € when having a helper. In analyzed conditions, in downhill skidding with John Deere 6230 and mean volume of tree 3,02 m3, is helper still economically acceptable when the winching distance is 15 meters and the skidding distance is 231,8 meters, or the winching distance is 30 meters and the skidding distance is 183,6 meters, or the winching distance is 45 meters and skidding distance is 95,9 meters.

Keywords:tractor skidding, helper, auxiliary storage place, time study, economics

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