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Chain Drive Computional Model as Virtual Engine Module
Vlastník, Jan ; Štětina, Josef (referee) ; Dundálek, Radim (referee) ; Píštěk, Václav (advisor)
his work deals with the methods of creating computational models for the analysis of the chain drive of camshafts in combustion engines. Methods are compared of the simulation of the drive mechanism; a new method is also presented for the simulation of the tensioning and guide bar by means of a modal reduction of an elastic body in the Multibody system. The work describes individual parts of the chain gear and the mathematical formulation of differential equations of motion. Algorithms are also indicated describing the mutual interaction of bodies in contact. Computations are here described for the determination of individual parameters necessary for setting up a chain drive model. The tensile characteristics of the chain is determined by the FEM programme. The chain model is analyzed in several alternatives of arrangement. FEM calculations are described here of the rigidity of contacts between the chain and the chain wheels and between the chain and the guide bars. The computational model has been created in the MSC ADAMS programme. The computation is carried out for a stabilized speed of the crankshaft of 3,000, 4,500 and 6,000 rpm and for a continuous start from the idle state up to the speed of 6,000 rpm with a constant load of the crankshafts by the torsion moment. Computation is also carried out for loading the crankshafts with a torsion moment deduced from the cam shape. The courses of the quantity obtained are processed by means of FFT; Campbell diagrams have been constructed for their evaluation. The results have been compared with the modal analyses of the individual parts of the chain gear for the determination of their mutual interaction.
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The changeable strut devices for cranes in hall
Dvořáček, Jan ; Pokorný, Jan (referee) ; Kašpárek, Jaroslav (advisor)
This thesis was created for Bosch Rexroth in order to simplify the lifting work in the manufacturing hall. There was made the construction project of changeable strut devices for lifting loads. The project is comprised of two parts. The first deals with the analytical calculation and the second part consists of a numerical calculation using the finite element method.
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Chain conveyor for conveying molding
Příhoda, Vojtěch ; Malášek, Jiří (referee) ; Škopán, Miroslav (advisor)
This bachelor thesis is focused on the design of conveyor for the mouldings with regard to the input parameters. The thesis is divided to the several parts where the beginning of the thesis is devoted to a research study about chain link conveyors. Furthermore, the chosen concept of the proposed conveyor with the introduction of the main components is explained. Following are design and check calculations of the main conveyor parts. The work also includes production documentation of the overall assembly and the subassembly of the driving station.
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Transfer table electromechanical
Přecechtílek, Pavel ; Malach, František (referee) ; Malášek, Jiří (advisor)
The aim of this thesis is to design a proposal of Transfer table electromechanical earmarked for transporting packs of sheets of tin with balance-sheet of electromechanical and electrohydraulic construction and to make important technical calculations. The introduction contains a description of the used constructional solution with the description of the individual parts of the transfer table and survey used components from different producer. The work includes functional calculations, which mainly includes the design and control of power running and lifting gear, calculate speeds and lift loads, the chain drives and other assemblies Transverse. Conclusion of this work deals with the assessment of the frame strength of the Transfer table using the finite element method. Further the work deals with the assessment of the maximum capacity of the machine and with any design modifications. The work also contains a design documentation, especially the plan of the Transfer table and detailed drawings of the frame and eccentric casters.
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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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