دورية أكاديمية
DIMENZIJSKE I MASENE ZNAČAJKE FORVARDERA.
| العنوان: | DIMENZIJSKE I MASENE ZNAČAJKE FORVARDERA. (Croatian) |
|---|---|
| Alternate Title: | DIMENSIONAL AND MASS CHARACTERISTICS OF FORWARDERS. (English) |
| المؤلفون: | PORŠINSKY, Tomislav, PANDUR, Zdravko, BUMBER, Zoran, LOVRINČEVIĆ, Mihael, URSIĆ, Branko, ĐUKA, Andreja |
| المصدر: | Journal of Forestry Society of Croatia / Sumarski List Hrvatskoga Sumarskoga Drustva; 2022, Vol. 146 Issue 9/10, p387-401, 15p |
| Abstract (English): | Timber forwarding is characterised by carrying timber clear of the ground and loading timber assortments by a hydraulic crane, which results in the requirement for a parallel network of secondary forest infrastructure network where the distance between trails equals to double span of the hydraulic crane. The paper presents 1) dimensional and mass characteristics of forwarders considering ISO 13860 (2016) standard and 2) forwarder load distribution plan developed by the German Kuratorium für Wadarbeit und Forsttechnik (KWF) to assist forestry experts in the purchase and use of these forest vehicles. The heavy eight-wheel forwarder Komatsu 875 was selected as an example. Its dimensional and mass characteristics are shown based on measurements and the load distribution plan, aiming to evaluate the vehicle. A critical comment is also given regarding the ISO 13860 (2016) standard due to the lack of some dimensional (length and height of the front and rear overhangs of forwarders, approach and departure angles and clearance radii) and mass (position of the centre of gravity point) of forwarders. These characteristics describe and serve to model its mobility during timber forwarding concerning the direction and longitudinal slope of the terrain. In addition, the ISO 13860 (2016) standard does not explicitly mention any indicator of environmental suitability (e.g. nominal ground pressure). [ABSTRACT FROM AUTHOR] |
| Abstract (Croatian): | Izvoženje drva forvarderima, obilježava kotrljanje drva na kotačima, prihvat i sakupljanje sortimentnom metodom izrađenoga drva hidrauličnom dizalicom, iz čega proizlazi i zahtjev za paralelnom mrežom sekundarnih šumskih prometnica međusobnoga razmaka dvostrukoga dosega dizalice. Rad se bavi prikazom: 1) dimenzijskih i masenih značajki forvardera u svijetlu norme ISO 13860 (2016) te 2) plana raspodjele tereta forvardera kojega je razvio njemački Kuratorij za šumski rad i šumsku tehniku (KWF), s ciljem pomoći šumarskim stručnjacima pri nabavci, odnosno korištenju ovih šumskih vozila. Za primjerni forvarder odabran je teški osmokotačni forvarder Komatsu 875, za koji su na osnovi mjerenja prikazane njegove dimenzijske i masene značajke, kao i plan raspodjele tereta s ciljem njegove ocjene. Kritički osvrt je dan i na normu ISO 13860 (2016) s obzirom na neobuhvaćanje nekih dimenzijskih (duljina i visina prednjeg te stražnjeg prepusta forvardera, kutovi i polumjeri prohodnosti vozila) i masenih (položaj točke težišta) pokazatelja forvardera, a koje opisuju i/ili služe modeliranju njegove kretnosti pri izvoženju drva s obzirom na smjer i uzdužni nagib terena. Isto tako, norma izrijekom ne spominje niti jedan pokazatelj okolišne pogodnosti (npr. nominalni tlak na podlogu). [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: | Complementary Index |
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