Priprava verige in njen vpliv na učinkovitost prežagovanja : diplomsko delo - visokošolski strokovni študij - 1. stopnja

Dužnik, Martin (author), Marenče, Jurij (mentor), Poje, Anton (co-mentor)

Cilj in namen diplomskega dela je bil ugotoviti, kako priprava verige motorne žage, drevesna vrsta in tip verige vplivajo na učinke pri prežagovanju lesa ter strukturo in obliko žagovine. Les bukve in jelke se je predhodno prizmiralz vertikalno krožno žago na dimenzijo 32 cm x 32 cm, napake pa se je izločilo med samim poskusom. Za prežagovanje lesa se je uporabilo motorno žago Husqvarna 372 xp, 45 cm dolg meč Stihl z 1,6 mm utorom ter verige Oregon in Stihl, katere so bile nabrušene pod tremi različnimi koti ostrine rezilcev in tremi različnimi višinami globinskih zob. Rezultati so pokazali, da se učinki prežagovanja v splošnem povečujejo z zniževanjem kota ostrine in s povečevanjem višinske razlike med rezilci in globinskimi zobi. Prežagovanje je učinkovitejše pri uporabi verig Oregon ter pri obdelavi lesa jelke. Deleži ostružkov z velikostjo 0,063 mm so večji pri manj znižanem globinskem zobu in manjših kotih ostrine rezilcev ter pri bukvi in verigah Oregon. Na dolžino ostružkov značilno vpliva kot ostrine rezilcev in drevesna vrsta, na širino drevesna vrsta in tip verige, na njegovo debelino pa višina globinskega zoba, drevesna vrsta in tip verige. Ugotovitve raziskave so uporabne za povečevanje učinkovitosti kakor tudi varovanje zdravja pri poklicnem in nepoklicnem delu z motorno žago.

• Language: Slovenian
• Keywords: Oregon, Stihl, kot ostrine rezilca, globinski zob, bukev, jelka
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [M. Dužnik]
• Year: 2013
• Number of pages: IX, 49 str.
• PID: 20.500.12556/RUL-115092
• UDC: 630*36
• COBISS.SI-ID: 3719590
• Publication date in RUL: 11.04.2020

Secondary language

• Language: English
• Title: Chain maintenance and its impacts on the performance of crosscutting with the chainsaw

Abstract

The aim and the purpose of the thesis was to find out how to prepare the chain of the chainsaw, tree species and the type of the chain and what is the affect at crosscutting wood and the structure and the form of sawdust. Wood of beech and fir was previously cut into the shape of prism with a vertical circular saw on a 32 cm x 32 cm, errors were eliminated during the experiment.For crosscutting wood was used a chainsaw Husqvarna 372 xp, 45 cm long sword Stihl with 1.6 mm groove and Oregon`s and Stihl`s chains which weres harpened under three different angles of edge of blades and three different heights of depth of teeth. The results showed that the effects of the cut generally increase by reducing the angle of edge of blades and by increasing the height difference between the blade and depth of a tooth. Crosscutting is more efficient in the use of Oregon`s chain and at the processing of fir wood. The proportion of chips with the size of 0,063 mm is higher in less reduced depth tooth and a small corner of the parietal blade and with beech and Oregon`s chains. On the length of the chip significantly affect the peak angle of the blade and tree species, on the width the tree species and the type of the chain, and on the thickness affect the height of depth of the tooth, tree species and the type of the chain. The research findings are useful for increasing the efficiency as well as protection of health at professional and selfwork with a chainsaw.