Primerjava obremenitve sekača s tresenjem pri sečnji mlajših sestojev iglavcev z akumulatorsko (Makita DUC302Z) in bencinsko motorno žago (Makita EA3200S35B)

diplomsko delo - univerzitetni študij - 1. stopnja

Luka Mesec (Author), Igor Potočnik (Mentor), Anton Poje (Co-mentor)

Abstract

V diplomski nalogi želimo odgovoriti na vprašanje, ali je obremenjenost sekača s tresenjem manjša pri delu z akumulatorsko kot z bencinsko motorno žago. Raziskava je potekala na območju Vrhnika-Logatec, v GGO Ljubljana, GGE Vrhnika. V raziskavo je bilo zajetih 10 suhih, po žledu in podlubnikih poškodovanih smrekovih dreves. Polovico izbranih dreves je bilo posekanih z akumulatorsko motorno žago (MAKITA DUC302Z) in polovica z bencinsko motorno žago (MAKITA EA320035B). Rezultati so pokazali, da je obremenitev sekača s tresenjem rok in dlani pri delu z bencinsko motorno žago večja, pri vseh delovnih operacijah, razen pri krojenju in prežagovanju, kjer je obremenitev manjša za 1,2 m/s2. Obremenitve so tako pri pripravljalnih delih in zaseku večje za 1,3 m/s2, pri podžagovanju za 1,5 m/s2, pri obdelavi korenovca za 0,2 m/s2 in pri kleščenju za 0,4 m/s2. Kljub temu, da je ocenjena osemurna vrednost izpostavljenosti pri delu z bencinsko motorno žago (3,69 m/s2) nižja od izpostavljenosti pri delu z akumulatorsko motorno žago (3,37 m/s2), obe vrednosti presegata opozorilno vrednost dnevne izpostavljenosti. Za zmanjšanje obremenitev s tresenjem so tudi pri delu z akumulatorsko motorno žago potrebni tehnični in organizacijski ukrepi.

Keywords

pridobivanje lesa;sečnja;ergonomija;obremenitev s tresenjem;motorne žage;bencinske motorne žage;akumulatorske motorne žage;

Data

Language:	Slovenian
Year of publishing:	2016
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[L. Mesec]
UDC:	630*3(043.2)=163.6
COBISS:	4638886
Views:	578
Downloads:	137
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Vibration exposeru during felling of juvenile conifers standas with battery (Makita DUCZ) and petrol powered chainsaw (Makita EAB)
Secondary abstract:	The purpose of graduation thesis was to answer the question whether the vibration exposure during felling is smaller when using battery or petrol powered chainsaw. The survey was conducted in the area of Vrhnika-Logatec in GGO Ljubljana, GGE Vrhnika. Survey covered 10 dry, ice storm and bark beetle damaged spruce trees. Half of selected trees were felled with battery chainsaw (MAKITA DUC302Z) and half with petrol chainsaw (MAKITA EA320035B). Results show that vibration exposure was greather when working with petrol chainsaw at every working operation except cross cutting, where vibration exposure was smaller for 1,2m/s2. The vibration exposure is bigger at preparation work and under cutting for 1,3m/s2, at backcutting for 1,5m/s2, at butt trimming for 0,2m/s2 and at debranching for 0,4m/s2. Although model values for 8 hour exposure time during work with battery chainsaw (3,37m/s2) is lower than values for petrol chainsaw (3,96m/s2), both values exceed warning law determined value. In order to reduce the vibration exposure during work with battery and petrol chainsaw, we must use appropriate technical and organizational sanctions.
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Ljubljani, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire
Pages:	VI, 26 f.
ID:	11534080