Metody měření tahových sil moderních strojů na zpracování půdy

Ing. Petr Procházka

Disertační práce

Methods of Tensile Force Measurements for Modern Soil Tillage Machines

Abstract:

This Ph.D. thesis is focused on tensile forces measurement process of modern tillage machines for bigger working width. There is a limited amount of measuring devices for tensile forces higher than 100 kN.To eliminate tensile rod disadvantages (need of use of two tractors is complicated for measuring operation during the headlands turns) thenew measuring frame was developed to measure the tensile forces. To characterize the physical attributes of the soil, before the new developed measurement, the samples of unbroken soil where taken (Kopecky cylinders. The penetration resistance of soil was measured in a horizontal and vertical profile by use of penetrometer.The measuring made on specific lands proven the new developed measuring device to be able to measure the tensile force up to 200 kNand more. The practical use of the measuring device was comparable to the measuring by a tensile rod during the measuring process.The considerable influence of the soil moisture was proven by the penetration measurements of the soil. The vertical and horizontal penetrometer measurements showed a similarity of the measuring method. The horizontal penetrometer might be a useful measuring method for a quick analysis of soil physical character considering accurate soil moisture measuring. Accurate instant soil moisture measuring and precise measurement of chisel plough working depth is a current theme for a future research.

Klíčová slova

tahová síla, zpracování půdy, aa

Keywords

Tensile Force, Tensile Rod, Measuring Frame

Jazyk práce: čeština

Datum vytvoření / odevzdání či podání práce: 10. 6. 2016

Obhajoba závěrečné práce

• Vedoucí: prof. Dr. Ing. František Kumhála
• Oponent: Josef Soukup, CSc., prof. Ing., Vladimír Rataj, externi, Jan Bronislaw Dawidowski, externi

Česká zemědělská univerzita v Praze

Technická fakulta

Doktorský studijní program / obor:
Zemědělské inženýrství / Technika zemědělských technologických systémů