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Vliv jezdce na délku kroku u koně
VRABČEKOVÁ, Monika
The mechanics of movement is one of the performance indicators of horses. It is influenced by internal and external factors. This thesis analyses how the rider's proficiency effects the length of steps of a walking and trotting horse. This experiment involves five horses of different breeds from ZF JU Ceske Budejovice and four riders of different proficiency levels (beginner, intermediate, advanced and a professional).These parameters were tested using video recordings: walking speed, the length of the step, the elevation height of the front left leg and the back left leg, the angle of the nose to the ground and the angle of the cheeks when walking and trotting. Measurements proved that the rider's proficiency and ability has statistically very high effect on the mechanics of the horse's movement, especially in relation to the elevation height of the legs, the length of the steps and speed. As the rider's proficiency level increases the walking speed and the elevation height of the legs also increase and the steps become longer. The nose angle got close to 90° with an increased level of rider's proficiency and the level of the angle of the cheeks decreased.The biggest differences were found between a beginner and a professional on a trotting horse. The differences were smaller when the horse was walking rather than trotting, however they still showed the same trend.The results found show that the rider has a significant effect on the mechanics of movement. A horse with a rider of higher proficiency can achieve better results and is able to demonstrate its abilities better. This can be used in races, exhibitions or horse sales.
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Manufacturing of slider
Chládek, Martin ; Havliš, Stanislav (referee) ; Podaný, Kamil (advisor)
Slider is a part of turn restrictor mechanism designed by company TOKOZ a.s. It is a part with complicated form and small dimensions from material DC04 (equivalent according to Czech standard ČSN 11 305.21). As the most suitable option for part manufacturing was chosen cutting and bending in progressive die. A design of forming layout with 11 stations was made and considering the outcomes of related calculations preliminarily selected presses LEXN 100 and Kaiser KSTU 1600. Subsequently was designed one row progressive die. Based on this designs were made few variants of part price calculations according to TOKOZ company customs. According to price calculation outcomes was as the most suitable selected press Kaiser KSTU 1600.
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Microdive with linear piezomotor
Grmela, Petr ; Vrba, Jaromír (referee) ; Koláčný, Josef (advisor)
The goal of this bachelor thesis is desctription of function and structure of piezoeletric motor „piezowawes“, creation his laboratory formation and folowing measuring his static characteristic (feed spead / drawing force). Except experimental conclusions is this thesis aim on theoretical analysis and physical explanation of piezoeletric phenomenon. This analys contains materials and important definition which are delaing with this phenomenon. This thesis also contains basic distribution of each kind of piezomotor and discuss aboat their practical use.
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