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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Analysis of extensions for mounting a harvester head on an excavator
 Popela, Dominik ; Struhal, Vít (referee) ; Mergl, Václav (advisor)
The introduction of the thesis deals with a complete research of individual components that need to be mounted on an excavator to make it possible to use it for forest harvest. An integral part of the research is a detailed market research, thanks to which various designs of manufactured attachments were analyzed. The research part is followed by a description of the selected components of the assembly, which form an excavator attachment for its use in forest harvest. The following chapter already describes the author's own designs of the extensions design in three variants. The key part of the thesis is dedicated to dynamic simulation of the harvesting process and strength simulations of the designed extensions. Using dynamic simulation, the course of the force effects acting on the attachment pin, which arise during the process of felling a tree, was determined. The maximum force effects were determined from the results of the dynamic simulation, which were then applied in the strength analysis. The finite element method was chosen for the calculation of the strength analysis. The final form of the individual design variants of the extensions arose from the performed strength analyses. The conclusion of the thesis evaluates the achieved results and a detailed comparison of the created design variants of the extensions.
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Design of Massage Gun
 Pechová, Tereza ; Haltof, Vladimír (referee) ; Sládek, Josef (advisor)
The task of the bachelor thesis was to design a cordless massage gun with interchangeable vibration attachments, which will have adjustable shock intensity and speed control. The main objective was to design an ergonomically suitable handle for multiple grip options. The resulting shape was derived from a previous market analysis of current products, both in design and technical terms, to meet the ergonomic requirements associated with this product. At the same time, I focused on ease of use.
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