Granične sile i mase tovara pri privitlavanju drva

Jurij Marenče (Avtor), Marijan Šušnjar (Avtor)

Povzetek

The stability of a forest vehicle apart from the longitudinal and transversal stability angle implies the safety of tractor anchoring during timber winching. Timber winching is a dragging of timber assortmens on the ground from the stump to a forest vehicle equipped with the forest winch. At a certain limiting load and slope of the terrain, disturbance of the longitudinal stability of the forest vehicle with the winch is occured. In this case, the adhesion factor of skidder and tractor on the ground is an important indicator of the possibility of safe and proper timber winching. The adhesion factor of the skidder during timber winching on the slope is detremined on the basis of the general expression of the adhesion factor on the skidder on the flat ground. Also, determined the dynamic model of the loading of the forest vehicle is presented during timber winching on the slope. The results show the horizontal components of forces in the rope and the limiting masses of the loads during timber winching by skidder Ecotrac 120 V. According to the obtained values of the horizontal components of forces in the rope, it can be concluded that the stability of the vehicle, defined by the displacement of the vehicle backwards is the limitation of the timber winching. The presented model of timber winching on the slope shows the basic principle for determining the limiting load masses and slope of the terrain, which can applied to all types of forest vehicles equipped with winch as well as easily be adapted to other conditions of timber winching at different positions of the vehicle and the direction of timber winching.

Ključne besede

privlačevanje lesa;stabilnost;dinamični model;mejne sile;masa tovora;

Podatki

Jezik:	Hrvaški jezik
Leto izida:	2019
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL BF - Biotehniška fakulteta
UDK:	630*37
COBISS:	5630374
ISSN:	0373-1332
Št. ogledov:	223
Št. prenosov:	172
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Limiting forces and load masses during timber winching
Sekundarni povzetek:	The stability of a forest vehicle apart from the longitudinal and transversal stability angle implies the safety of tractor anchoring during timber winching. Timber winching is a dragging of timber assortmens on the ground from the stump to a forest vehicle equipped with the forest winch. At a certain limiting load and slope of the terrain, disturbance of the longitudinal stability of the forest vehicle with the winch is occured. In this case, the adhesion factor of skidder and tractor on the ground is an important indicator of the possibility of safe and proper timber winching. The adhesion factor of the skidder during timber winching on the slope is detremined on the basis of the general expression of the adhesion factor on the skidder on the flat ground. Also, determined the dynamic model of the loading of the forest vehicle is presented during timber winching on the slope. The results show the horizontal components of forces in the rope and the limiting masses of the loads during timber winching by skidder Ecotrac 120 V. According to the obtained values of the horizontal components of forces in the rope, it can be concluded that the stability of the vehicle, defined by the displacement of the vehicle backwards is the limitation of the timber winching. The presented model of timber winching on the slope shows the basic principle for determining the limiting load masses and slope of the terrain, which can applied to all types of forest vehicles equipped with winch as well as easily be adapted to other conditions of timber winching at different positions of the vehicle and the direction of timber winching.
Sekundarne ključne besede:	timber winching;tractor stability;dynamic model;limiting forces;load masses;
Strani:	str. 515-521
Letnik:	ǂVol. ǂ143
Zvezek:	ǂiss. ǂ11/12
Čas izdaje:	2019
DOI:	10.31298/sl.143.11-12.1
ID:	11411921