Assessing cable tensile forces and machine tilt of winch-assisted forwarders on steep terrain under real working conditions
Winch-assisted forwarders are now commonly accepted as an innovative alternative for extracting wood on challenging terrain. In order to assess safety risks, it is necessary to know the tensile forces in the steel wire rope and their interaction with the machine tilt under real working conditions. I...
| Permalink: | http://skupnikatalog.nsk.hr/Record/nsk.NSK01001065134/Details |
|---|---|
| Matična publikacija: |
Croatian journal of forest engineering (Online) 40 (2019), 2 ; str. 281-296 |
| Glavni autori: | Holzfeind, Thomas (Author), Kanzian, Christian, inženjer šumarstva, Stampfer, Karl, Holzleitner, Franz |
| Vrsta građe: | e-članak |
| Jezik: | eng |
| Predmet: | |
| Online pristup: |
https://doi.org/10.5552/crojfe.2019.621 Croatian journal of forest engineering (Online) Hrčak |
| LEADER | 03501naa a22003974i 4500 | ||
|---|---|---|---|
| 001 | NSK01001065134 | ||
| 003 | HR-ZaNSK | ||
| 005 | 20200715094450.0 | ||
| 006 | m d | ||
| 007 | cr|||||||||||| | ||
| 008 | 200602s2019 ci ad |o |0|| ||eng | ||
| 024 | 7 | |2 doi |a 10.5552/crojfe.2019.621 | |
| 035 | |a (HR-ZaNSK)001065134 | ||
| 040 | |a HR-ZaNSK |b hrv |c HR-ZaNSK |e ppiak | ||
| 041 | 0 | |a eng |b eng | |
| 042 | |a croatica | ||
| 044 | |a ci |c hr | ||
| 080 | 1 | |a 630 |2 2011 | |
| 080 | 1 | |a 621 |2 2011 | |
| 100 | 1 | |a Holzfeind, Thomas |4 aut |9 HR-ZaNSK | |
| 245 | 1 | 0 | |a Assessing cable tensile forces and machine tilt of winch-assisted forwarders on steep terrain under real working conditions |h [Elektronička građa] / |c Thomas Holzfeind, Christian Kanzian, Karl Stampfer, Franz Holzleitner. |
| 300 | |b Ilustr., graf. prikazi. | ||
| 504 | |a Bibliografija: str. 295-296. | ||
| 504 | |a Abstract. | ||
| 520 | |a Winch-assisted forwarders are now commonly accepted as an innovative alternative for extracting wood on challenging terrain. In order to assess safety risks, it is necessary to know the tensile forces in the steel wire rope and their interaction with the machine tilt under real working conditions. In this study, the tensile force and the machine tilt of two winch-assisted forwarders (John Deere 1210E and Komatsu 840TX) were observed for about 15 work hours without delays on two different stands in Austria. The tensile force data and the machine tilt data were separated by work elements. The mean tensile force ranged from 18.1 kN for unloading up to 56.8 kN for loading activities. During the measurements, the cable tensile force exceeded 50% of the minimum breaking strength (MBS) only twice. The maximum observed tensile force was 174.5 kN or 82.7% of the MBS, respectively, which led to a failure of the steel cable. For the machine tilt, a maximum of 80% was measured during loading and driving during loading. John Deere 1210E was operated 31% of the productive work time above the manufacturers tilt limit. For Komatsu 840TX, the manufacturers’ maximum tilt limit was exceeded only twice. The study also showed that peaks with an amplitude of up to 50 kN can occur within a few centiseconds, which highlights the need of high measurement rates, when measuring cable tensile force of winch-assisted machinery. The detailed analysis of the peaks showed that 90% of the pit-to-peak amplitudes ≥20 kN occurred during driving activities. Only 10% of pit-to-peak amplitudes ≥20 kN were measured during loading activities, although loading took about 43.5% of the productive work time. As such, the study results confirm that amplitudes of peaks in tensile force, and hence safety risks, are significantly higher during driving than during loading. | ||
| 653 | 0 | |a Sječa stabala |a Nagib terena |a Vitlo |a Vučna sila | |
| 700 | 1 | |a Kanzian, Christian, |c inženjer šumarstva |4 aut | |
| 700 | 1 | |a Stampfer, Karl |4 aut | |
| 700 | 1 | |a Holzleitner, Franz |4 aut | |
| 773 | 0 | |t Croatian journal of forest engineering (Online) |x 1848-9672 |g 40 (2019), 2 ; str. 281-296 |w nsk.(HR-ZaNSK)000843366 | |
| 981 | |b Be2019 |b B03/19 | ||
| 998 | |b dalo2006 | ||
| 856 | 4 | 0 | |u https://doi.org/10.5552/crojfe.2019.621 |
| 856 | 4 | 0 | |u http://www.crojfe.com/archive/volume-40-no.2/assessing-cable-tensile-forces-and-machine-tilt-of-winch-assisted-forwarders-on-steep-terrain-under-real-working-conditions/ |y Croatian journal of forest engineering (Online) |
| 856 | 4 | 0 | |u https://hrcak.srce.hr/228243 |y Hrčak |
| 856 | 4 | 1 | |y Digitalna.nsk.hr |