Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Václav Mergl"'
Autor:
Luboš Staněk, Václav Mergl
Publikováno v:
Journal of Forest Science, Vol 70, Iss 8, Pp 436-445 (2024)
The subject of this study is to point out the issue of various impacts of musculoskeletal disorders in chainsaw operators and their impact on human health. The first goal was to find out whether the body mass index is responsible for excessive stress
Externí odkaz:
https://doaj.org/article/e80e46c2341c450585ce1c5917bc7394
Publikováno v:
Forests, Vol 14, Iss 7, p 1348 (2023)
The aim of this work was to determine the dependence of the heart rate of operators of forwarding machines on the activities performed during the working day within the framework of timber forwarding and to compare individual activities in terms of t
Externí odkaz:
https://doaj.org/article/6e23f32510804b9b99e4252f87f76e4b
Autor:
Tomáš Zemánek, Petr Procházka, Ivo Pazdera, Jindřich Neruda, Václav Mergl, Ondřej Vítek, Radomír Ulrich, Luboš Staněk
Publikováno v:
Forests, Vol 13, Iss 8, p 1317 (2022)
This paper deals with the design and operational evaluation of a timber tractor-trailer unit with a hybrid trailer drive. The source of electrical energy for the two induction motors driving the front wheels of the tandem trailer axle is a battery, w
Externí odkaz:
https://doaj.org/article/ba365460d69a417d8eb5e87ffeca7866
Autor:
Václav Mergl, Jaroslav Kašpárek
Publikováno v:
Forests, Vol 13, Iss 4, p 592 (2022)
The paper deals with the verification of the stability of a new design concept of a hybrid harvester intended for thinning and with the determination of deviation between two methods of measuring the machine’s center of gravity, i.e., between the m
Externí odkaz:
https://doaj.org/article/f3f43d9dafe543eaa3e62ae4e880202e
Autor:
Luboš Staněk, Václav Mergl
Publikováno v:
Forests, Vol 13, Iss 4, p 630 (2022)
This paper seeks to answer the question of whether the magnitude of vibrations affecting the whole body of the harvester operator (WBV) that are generated by the harvester boom is affected by the size of the processed trunk volume, to specify closer,
Externí odkaz:
https://doaj.org/article/a44237bbe5544182836bcf2b4763dfc3
Autor:
Václav Mergl, Jaroslav Kašpárek
Publikováno v:
Forests, Vol 13, Iss 2, p 357 (2022)
This paper focuses on the force and torque load of a harvester hydraulic crane employed on sloping grounds, both levelled and not levelled. Field research was conducted for this purpose and the results were compared with a dynamic analysis of the cra
Externí odkaz:
https://doaj.org/article/19d06993e7a546e992554ba96a657640
Publikováno v:
Forests, Vol 12, Iss 10, p 1348 (2021)
This paper deals with the use of debarking modifications of the conventional harvester head in the conditions of felling due to bark beetle calamity. For this purpose, a time study was established, in which the conventional heads were compared with t
Externí odkaz:
https://doaj.org/article/5604490128e340b48e24fa58b0be4581
Publikováno v:
Energies, Vol 14, Iss 10, p 2793 (2021)
The paper deals with the characteristics of three different types of power train hybridization of forest logging machines and with the benefits of reducing environmental impacts by comparing new technology with more conventional, older technology. Ne
Externí odkaz:
https://doaj.org/article/5413ec343cec490bbc61627621eaa3ad
Publikováno v:
Central European Forestry Journal. 69:59-67
This study deals with a question whether the magnitude of vibrations affecting the power saw operator during the tree felling is still the same or not. For this purpose, the tree felling was broken down into several partial operations (pruning of low
Publikováno v:
Forests; Volume 14; Issue 7; Pages: 1348
The aim of this work was to determine the dependence of the heart rate of operators of forwarding machines on the activities performed during the working day within the framework of timber forwarding and to compare individual activities in terms of t