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National Repository of Grey Literature 47 records found  beginprevious46 - 47  jump to record: Search took 0.01 seconds. 
Creeper
 Pavelka, Roman ; Kašpárek, Jaroslav (referee) ; Malášek, Jiří (advisor)
This bachelor project concerns with design solution of the creeper. Besides, the project specifies limitation of the chain gearings including various chain types. The project includes also the process calculation. Please find attached following design drawings General Arrangement, Sub- arrangements and Production Detail Design at the of the bachelor project.
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Úpravy pilových řetězů a jejich vliv na hygienické parametry motorové pily z hlediska úrovně hluku
 Janíček, Jakub
The thesis is focused on the treatment of saw chains and their impact on the health parameters of chainsaw in terms of noise levels .It verifies the impact of construction of the chain type on noise level at the operator. Four types of saw chains were used for this measurement, namely chisel and semi-chisel teeth chains and PowerSharp chain. In the terms of occupational exposure limits according to government regulations about health protection, nosie and it's harmful effect on workers. The thesis describes possible medical complications and occupational diseases caused by excessive exposure to extremely loud sound. Using literature and electronical sources, marking of attenuation of noise on hearing protective equipment is described, from which the most used are shown. One of the chapters is devoted to the basic facts about physical nature of the sound waves. Except of description of three chain samples, this work also contains a noise measuring report with the ÚLDT measuring device. The problem of measuring the level of noise was solved by obtaining information from the literature and electronic sources. Conditions of this thesis were fulfilled with the help of my supervisor , who provided conslultations and czech government standards from which I could draw information.
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