Šumarski list, Vol. 146 No. 9-10, 2022.
Izvorni znanstveni članak
https://doi.org/10.31298/sl.146.9-10.1
Dimensional and mass characteristics of forwarders
Tomislav Poršinsky
; Sveučilište u Zagrebu, Fakultet šumarstva i drvne tehnologije
Zdravko Pandur
; Sveučilište u Zagrebu, Fakultet šumarstva i drvne tehnologije
Zoran Bumber
; Hrvatske šume d.o.o., UŠP Zagreb
Mihael Lovrinčević
; Sveučilište u Zagrebu, Fakultet šumarstva i drvne tehnologije
Branko Ursić
; Sveučilište u Zagrebu, Fakultet šumarstva i drvne tehnologije
Andreja Đuka
orcid.org/0000-0002-2505-713X
; Sveučilište u Zagrebu, Fakultet šumarstva i drvne tehnologije
Sažetak
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).
Ključne riječi
mobility and performance characteristics of forwarders; ISO 13860 (2016); load distribution
Hrčak ID:
284881
URI
Datum izdavanja:
31.10.2022.
Posjeta: 704 *