Vpliv tehničnih elementov verige motorne žage na obremenitve delavca s tresenjem

diplomsko delo - visokošolski strokovni študij - 1. stopnja

Žiga Švigelj (Avtor), Igor Potočnik (Mentor), Anton Poje (Komentor)

Povzetek

Namen in cilj diplomske naloge je bil ugotoviti, kako različna priprava verige motorne žage, tip verige in drevesna vrsta vplivajo na obremenitve delavca s tresenjem, rok in dlani. Za ugotavljanje obremenitev delavca s tresenjem med prežagovanjem se je uporabilo prizmiran les jelke in bukve, ki se ga je predhodno prizmiralo s krožno tračno žago, na dimenzije 32 cm x 32 cm, napake lesa se je tekom poskusa izločilo. Za potrebo poskusa se je za prežagovanje uporabilo motorno žago Husqvarna 372 xp, na kateri je bila nameščena letev Stihl dolžine 45 cm, z 1,6 mm utorom ter verige proizvajalcev Stihl in Oregon, katere se je predhodno nabrusilo pod tremi različnimi koti ostrine rezilca in tremi različnimi globinami globinskih zob. Meritve se je opravljajo z merilnikom tresenja Pulse LAN Xi proizvajalca Brüel & Kjær, ki je bil povezan preko kabla z akcelerometrom, nameščenega na vodilnem ročaju motorne žage. Rezultati analize so pokazali, da je jakost tresenja ob neupoštevanju višine globinskih zob najmanjša pri kotih ostrine rezilca, kot jih priporoča proizvajalec verige. Ob upoštevanju višine globinskih zob pa jakost tresenja manjša pri nižjih globinskih zobih in manjših kotih ostrine rezilca, kot jih priporoča proizvajalec verige. Pri prežagovanju z verigami Oregon je jakost tresenja manjša kot z verigami Stihl ter manjša pri obdelavi jelke kot bukve. Ugotovitve raziskave so uporabne za zmanjšanje obremenitev rok in dlani profesionalnega gozdnega delavca in občasnega uporabnika motorne žage.

Ključne besede

tresenje;obremenitev s tresenjem;motorna žaga;brušenje verige;ergonomija;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2014
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL BF - Biotehniška fakulteta
Založnik:	[Ž. Švigelj]
UDK:	630302:63036(043.2)=163.6
COBISS:	3798694
Št. ogledov:	516
Št. prenosov:	137
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Impact of technical elements of chainsaw chain on exposure to vibration
Sekundarni povzetek:	The purpose and the aim of the thesis was done to determine how different preparations of a chain of the chainsaw, the type of the chain and the tree species affect on the worker who is exposed to vibration of his hands and palms. To determine the exposure to vibration during crosscutting prismatic wood of fir and beech has been used, which was previously shaped by circular band saw to the dimensions of 32 cm x 32 cm, errors of wood were eliminated during the experiment. For the experiment the chainsaw Husqvarna 372 XP was used for crosscutting, on which the rack Stihl of 45 cm length, with 1.6 mm groove and the chains of Stihl and Oregon was placed, which were previously sharpened under three different angles of sharpened blade and three different depths of deep teeth. Measurements were carried out with - Pulse LAN Xi manufactured by Brüel & Kjær, which was connected through the cable to the accelerometer which was installed at the forefront handle of the chainsaw. The results of the analysis showed that the intensity of vibration, not taking into account the height of the depth of teeth is the lowest at the corners of the sharpened blade as recommended by the chain manufacturer. Taking into account the height of deep teeth the intensity of shaking is weaker with lower depth of teeth and smaller corners of the focus of blade as recommended by the chain manufacturer. At crosscutting with Oregon chains the intensity of vibration is smaller than the Stihl chains and lower at processing of fir and beech. The research findings are useful for reducing the burden of the hands and palms of a professional forest worker and the occasional chainsaw user.
Vrsta dela (COBISS):	Diplomsko delo/naloga
Komentar na gradivo:	Univ. v Ljubljani, Biotehniška fak., Odd. za gozdarstvo in obnovljive gozdne vire
Strani:	53 str.
ID:	11522580