diplomsko delo - visokošolski strokovni študij - 1. stopnja
Janez Mikuletič (Author), Matevž Mihelič (Mentor)

Abstract

Specialni gozdarski zgibnik slovenskega proizvajalca Bijol je nov proizvod. Zato smo se lotili raziskave, da bi ugotovili strukturo delovnega dne in učinkovitost spravila lesa glede na različne smeri spravila, naklone terena, razdalje zbiranja in drevesne vrste. Raziskavo smo izvedli na podjetju SiDG. V GGE Javornik smo posneli 22 ciklov spravila lesa. Ugotovili smo, da v povprečni strukturi časa nastopa 65,67 % produktivnega ter 34,33 % neproduktivnega časa. Povprečno breme znaša 4,29 m3, največje 6,2 m3, najmanjše pa 2,8 m3. Učinkovitost spravila lesa je večja pri spravilu po ravnem (0,88 min/m3) kot pri spravilu navzdol (1,53 min/m3). Učinkovitost dela se veča z manjšanjem naklona, pri povprečnem naklonu -7,37 % znaša 1,25 min/m3, vendar na oba rezultata vpliva neuravnotežen vzorec. Razdalja vlačenja vpliva na učinkovitost dela in znaša 0,44 min/m3 pri spravilni razdalji 100 m. Povprečni dnevni učinek v študiji znaša 34,6 t. Za zanesljivo potrditev učinkovitosti je potrebno opraviti več terenskega snemanja.

Keywords

spravilo lesa;časovna študija;listavci;Bijol BWS 160;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [J. Mikuletič]
UDC: 630*31+630*30(043.2)=163.6
COBISS: 38240259 Link will open in a new window
Views: 600
Downloads: 219
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Other data

Secondary language: English
Secondary title: Skidding of broadleaves in high karst forests of south-west Slovenia with articulated skider Bijol BWS 160
Secondary abstract: Manufactured by the Slovene company Bijol, the articulated cable skidder is a new product. Therefore, the aim of this work was to conduct research in order to determine the structure of working day and skidding efficiency in relation to two skidding directions, slope, yarding distance and tree species. The research was conducted in the SiDG company, where 22 cycles were recorded. It was determined that average time structure is comprised of 65,67 % of productive time and 34,33 % of unproductive time. Average load equalled to 4,29 m3, while the biggest one amounted to 6,2 m3, and the smallest to 2,8 m3. Skidding efficiency was found to be higher when skidding on flat terrain (0,88 min/m3) than on a downward slope (1,53 min/m3), while skidding efficiency improves when the slope descends; with the average slope of -7,37 %, work efficiency equals to 1,25 min/m3. Both above results are the consequence of an imbalanced sample. The skidding distance affects work efficiency and equals to 0,44 min/m3 on a skidding distance of 100 m. The average daily output equals to 34,6 t. To obtain a reliable estimation of work efficiency, more field-recording is required.
Secondary keywords: skidding timber;time study;broadleaves;Bijol BWS 160;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za gozdarstvo in obnovljive gozdne vire
Pages: VIII, 45 f., [1] f. pril.
ID: 12046431