DIGITALNA ARHIVA ŠUMARSKOG LISTA

prilagođeno pretraživanje po punom tekstu

ŠUMARSKI LIST 6-8/1990 str. 69 <-- 69 --> PDF |

8. Rebula , E.: Gorivo in mazivo pri scčnji in izdelavi gozdnih sortimentov. Univerza Edvarda Kardelja v Ljubljani, VDO Biotehniška fakulteta, VTOZD za gozdarstvo, Ljubljana, 1985. 9. Ševe r, S., H o r v a t, D., Golja, V. i R i s o v i ć, S.: Neki rezultati istraživanja potrošnje goriva na radovima proreda sastojina. Mehanizacija šumarstva,´ vol. 14, no 3/4, 1989. 10. Strehlke, E.-G., Sterzik, H. K., Strehke, B.: Forstmaschinenkunde, Hamburg u. Berlin, 1970. 11. Turk , Z.: Metodika kalkulacija ekonomičnosti strojnog rada u šumarstvu. Biotehn. f. Inst. za goz. in les. g. Vt. za gozd., Str. i zn. r. 57, Ljubljana, 1977. Fuel and Lubricant Consumption of a Power Chain Saw STIHL 056 During Ft´lling and Primary Conversion of Round Timber and Cubic Metre Stacked Wood in Ripe Stands of Pedunculate Oak In this paper the authors deal with the consumption of fuel and lubricant of a power chain saw Stihl 056 at felling and primary conversion of ripe stands of Pedunculate oak, with the application of assortment method. Tree diameters ranged from 39 to 65 cm. Consumption of fuel and lubricant per tree increases with the growth in diameter, so that the relation of fuel consumption in trees of 39 cm and 65 cm in DBH can be expressed as 1.0 : 2.2. In the case of lubricant the relation is similar and can be expressed as 1.0 : 2.0. The percentage of lubricant consumption compared to fuel consumption per tree decreases with the DBH and on average amounts to 38%. Vith the growth in diameter of a tree and round timber the consumption of fuel and lubricant per m:1 of worked up volume of wood decreases. In the case of trees with 65 cm DBH compared to trees of 39 cm DBH the consumption of fuel decreased by 16% and lubricant by 28"´/n. In investigated trees of all diameters the relation between the DBH and mean diameter of round timber was determined for each tree. Thus, a connection was established between consumption of fuel and lubricant per m´1 by mean diameter of round timber for trees of all diameter sub-classes. The mean diameter of stacked wood does not depend on the tree diameter and on average it amounts to 13.5 cm with bark. The consumption of fuel and lubricant per m:1 of volume of wood for stacked wood is presented on average for trees of all diameters and amouts to 0.319 l,´m;l for fuel and 0.119 1 m:i for lubricant. Average consumption of fuel and lubricant per m´! in felling and working up of stacked wood is 2.5 times greater compared to the consumption in felling and working up of round timber. A dominant influence on this difference can be explained by the fact that four times more sawing is needed in the case of stacked wood. Namely, the length of one piece of stacked wood amounts to one metre, while in timber four metres on average. The mean average in the latter case was 2.7 times greater. Key words : Pedunculate oak stand, seed felling, assortment method, power chain saw, round timber, stacked wood, tree time, assortment time, consumption of oil and lubricant, tree, cubic metre. |