Technológ - Ročník 15.; Číslo 2/2023

Permanent URI for this collectionhttps://drepo.uniza.sk/handle/hdluniza/838

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Konštrukčný návrh mechanizmu skrutkového manipulátora turniketu sypkých materiálov
(Žilinská univerzita v Žiline, 2023) Molnár, Denis; Blatnický, Miroslav; Dižo, Ján; Ishchuk, Vadym
The article is the next step in the ongoing research regarding the incorporation of the proposed bulk material turnstile assembly into an existing production line serving the food industry for bagging powdered milk. The main goal of this contribution is the presentation of the structural design and related technical calculations of the screw manipulator as part of the turnstile for loose materials. The proposed mechanism will enable precise manipulation of the turnstile, especially when it is necessary to clean the pipe connected to the turnstile. Such handling is relevant nowadays due to increasing the safety of maintenance of machines and equipment and due to reducing the physical load of maintenance workers. The results prove the appropriateness of the use of the given structural design and are the basis for further research in the given area. The results will be implemented in the form of boundary conditions for the numerical analyses of the connecting elements of the frame carrying the entire carriage with the turnstile (the frame forms a path for the carriage) and also for numerical calculations of the frame itself. The goal is to achieve a state where the entire structure is safe for the operator during maintenance and also for its surroundings during normal operation.
Návrh elektrického mechanizmu otáčania výložníka stĺpového žeriava pre manipuláciu s kalovými čerpadlami
(Žilinská univerzita v Žiline, 2023) Blatnický, Miroslav; Dižo, Ján; Molnár, Denis; Ishchuk, Vadym
The article is a continuation of the issue of the technical solution of the hinge for handling sludge pumps in the Jaslovské Bohunice nuclear power plant. The main goal is the design of the electric jib rotating mechanism. It was based on the previous proposal for placing the boom consisting of a dimensional calculation of the new support column and the proposal for placing the boom on this column. The save consisted of two bonds. The upper support of the boom was solved using a rolling bearing fixed in the upper part of the column. The bottom bearing contains an axial plain bearing and a fixed gear as part of the rotating mechanism. In the next step, it is necessary to design the attachment of the selected electric motor with a planetary gearbox and a pinion for this construction. The priority in the design will be mainly to observe the axial distance of the gears, but also to consider the mounting method given by the manufacturer and the torque generated by the engine. A holder in which the motor is attached and then attached to the structure will be designed. Thanks to this, the axial distance will be fulfilled. In addition to supporting the motor, the holder also serves as a radial bearing lock, preventing the bearing from being accidentally pulled out. The result of calculations and designs will be 2D diagrams and 3D visualization of the new construction.
Skúmanie jazdných vlastností koľajového vozidla a vzájomného pôsobenia kontaktu koleso/koľajnica pomocou simulačných výpočtov
(Žilinská univerzita v Žiline, 2023) Šťastniak, Pavol; Gerlici, Juraj; Dižo, Ján; Blatnický, Miroslav; Kravchenko, Kateryna
The paper deals with the dynamic analysis and evaluation of the driving characteristics of the selected railway vehicle through computer simulations on virtual and mathematical models. Approaches and methodology from the point of view of creating a virtual model of a railway vehicle as a multi-body system are described in detail., its components and their interrelationships, with the help of which it is possible to obtain the results of a simulated driving of a vehicle with specified parameters of the mechanical system of the vehicle and the track. Practical calculations are performed using the Simpack computer program.