Vpliv tehnike dela na obremenitev sekača s tresenjem

diplomsko delo - visokošolski strokovni študij - 1. stopnja

Matej Šilc (Avtor), Igor Potočnik (Mentor), Anton Poje (Komentor)

Povzetek

Cilj raziskave za diplomsko nalogo je bil ugotoviti, ali nepravilna tehnika dela povečuje obremenjenost sekača s tresenjem. Raziskave so potekale na gozdnogospodarskem območju Postojna v sestoju smreke s primesjo bukve in jelke. Meritve so bile opravljene v sodelovanju s sekačem in učiteljem praktičnega pouka na Srednji gozdarski in lesarski šoli Postojna. Priprave na meritve so potekale en dan, meritve pa tri dni. Prvi merilni dan je sekač uporabljal pravilno, drugi dan pa nepravilno tehniko dela. Obremenjenost sekača s tresenjem se je ugotavljala, tako da je imel sekaču med kazalcem in prstancem nameščen T nosilec z akcelerometrom. Vzporedno je potekala tudi časovna študija dela. Tretji merilni dan, ki je potekal na skladišču žage se je preizkušalo razliko med trdnim in ohlapnim oprijemom vodilnega ročaja motorne žage. Rezultati raziskave so pokazali, da so bile izmerjene jakosti tresenja rok in dlani ne glede na tehniko dela med sečnjo in izdelavo veliko višje od dosedanjih raziskav, čemur vzrok lahko pripišemo metodi meritev. Ugotovljeno je bilo, da se s trdnostjo oprijema razlika med jakostjo tresenja,izmerjeno na roki s pomočjo T nosilca, in med jakostjo, izmerjeno neposredno na vodilnem ročaju motorne žage, zmanjšuje. Navkljub rezultatom je uporaba pravilne tehnike priporočena zaradi manjše splošne obremenitve sekača med delom ter zaradi preprečevanja nezgod pri delu.

Ključne besede

tresenje;obremenitev s tresenjem;orodje za sekanje;stroji za sekanje;ergonomija;časovna študija;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2011
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL BF - Biotehniška fakulteta
Založnik:	[M. Šilc]
UDK:	630*3
COBISS:	3174054
Št. ogledov:	1255
Št. prenosov:	409
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Neznan jezik
Sekundarni naslov:	Impact of work techniques on lumberman vibration load
Sekundarni povzetek:	The aim of the research for the diploma paper was to ascertain whether improper work technique is increasing a chopper's overload with shaking. The research was carried out in Postojna forest management district, consisting ofspruce with admixture of beech and fir trees. The surveying was administeredin cooperation with chopper and practical tuition teacher from Secondary Forestry and Woodwork School Postojna. The preparation for the surveying took one day, while the surveying alone was carried out in three days. The chopper was applying proper work technique on the first day of the surveying, while on the next day the technique applied was improper. The overload of the chopper with shaking was determined by placing a T-carrier with accelerometer between his index and ring finger. In parallel with the surveying, a time study of work was carried out. On the third day of the surveying we were testing the difference between firm and loose adhesion of the sawmill leading handle in the sawmill storage. The results of the researchshow that the measured intensity of the shaking of the hands and palmsregardless of the technique of work applied for logging was much higher than what the findings of previous research demonstrated. The reason for this can be seen in the method of surveying. It was namely noted that the firmer the grip, the smaller the difference between intensity of shaking measured on the hand with the help of the T-carrier and the intensity measured directly onthe leading handle of the sawmill.
Vrsta dela (COBISS):	Diplomsko delo/naloga
Komentar na gradivo:	Univ. v Ljubljani, Bioteh. fak., Odd. za gozdarstvo in obnovljive vire
Strani:	V, 28 str.
Ključne besede (UDK):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;work science (work studies) in forestry;harvesting of wood: logging and transport;forest engineering;študij dela v gozdarstvu;sečnja in prevoz lesa;gozdarsko inženirstvo;
ID:	56056