Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2007
Volume 10
Issue 1
Topic:
Forestry
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Dvok J. , Karnet P. 2007. PRELIMINARY TECHNICAL TIME STANDARDS FOR HARVESTERS WORKING IN PREMATURE AND MATURE STANDS, EJPAU 10(1), #01.
Available Online: http://www.ejpau.media.pl/volume10/issue1/abs-01.html

PRELIMINARY TECHNICAL TIME STANDARDS FOR HARVESTERS WORKING IN PREMATURE AND MATURE STANDS

Ji Dvok1, Pavel Karnet2
1 Department of Forest Harvesting, Czech University of Agriculture in Prague, Czech Republic
2 Czech University of Life Science Prague, University Forestry Establishment at Kostelec n.C.l., Czech Republic

 

ABSTRACT



Assessment of performance standards for logging operations is a foremost task of the technical standardization. In this paper we deal with preliminary technical time standards for harvesters working in particular felling&technology and natural conditions. Monitoring of unsuitable time utilization is hand in hand with elaborated correction proposals another objective of this work. The chronometry was analyzed during the work of medium-scale harvester Timberjack 1070 in natural environment of Krusné hory during felling works in premature and mature forest stands. Preliminary paper is worked up for tree-volume of coniferous species from 0.44 to 0.73 m3, which require for manufacturing operation time from 91 to 118 seconds. More operation time is needed when greater trunks are processed. Total standards lies for intermediate (improvement, advanced) fellings within the interval 0.033-0.043 Standard hour/m3 for main felling 0.030-0.039 Sh/m3 depending on tree-volume. Propounded findings should not be generalized; they are typical for the use of medium-scale harvesters in such natural conditions that are similar to nature territory Krusné hory.

Key words: logging operations, chronometry, Timberjack harvester, time standards .


Ji Dvok
Department of Forest Harvesting,
Czech University of Agriculture in Prague, Czech Republic
Kamycka 129, Praha 6 - Suchdol, 165 21, Czech Republic
Phone: +420 2 2438 3748
email: DvorakJ@fle.czu.cz

Pavel Karnet
Czech University of Life Science Prague,
University Forestry Establishment at Kostelec n.C.l., Czech Republic
Nam. Smirickych 1, Kostelec n. C.l., Czech Republic
email: karnet@slp.cz

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.