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Keys Parameters of Digital Transformation of Continuous Transport Systems

Fedorko Gabriel, Molnár Vieroslav, Michalik Peter

Advances in Science and Technology. Research Journal

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2023

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Vol. 17, no 3

73--78

EN

Digital transformation is nowadays one of key areas of industrial practice, which needs to be addressed in connection with further development of Industry 4.0. Its implementation creates prerequisites for increasing efficiency of process operations at various corporate levels, including logistics. Business logistics processes represent an important element in the value chain of final products manufacturing and services provision. One of main tasks they ensure is transport and handling processes implementation, which can currently be ensured through many technologies, among which continuous transport systems have a significant place. In the paper, a process of digital transformation focused on conveyor transport will be presented in more detail, while individual parameters and key indicators will be specified. Experimental measurement method is considered as a starting point for digital transformation implementation.

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Design and Implementation of a Dynamic Testing Rig for Testing of Pipe Conveyor Belt and their Components

Michalik Peter, Molnár Vieroslav, Fedorko Gabriel

Advances in Science and Technology. Research Journal

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2022

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Vol. 16, no 3

155--164

EN

Pipe conveyors represent a continuous transport system that is difficult to obtain real operating data from in terms of operational characteristics’ research. That is why the research of these conveyors is mainly supported with the data from special, static testing rigs. However, the measurements do not provide corresponding operating results and can differ from actual operating conditions. That is why, a dynamic testing rig was designed for the research which also represents the smallest pipe conveyor worldwide. The article describes options of conveyor belts and pipe belt conveyor components examination with the use of static and dynamic testing rig, and researches a new design and implementation of a dynamic testing rig - the smallest fully functional pipe belt conveyor in the world with a length of 11 m and belt width of 0.6 m. The said testing device can provide data obtained during dynamic operation of the pipe conveyor, which compared with a static rig increases the accuracy and value of obtained data and results.

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Simulations as an Assessment Tool for the Feasibility of Logistics Innovations Motivated by the Emergence of Supply Chain Risk

Strnad David, Fedorko Gabriel, Molnár Vieroslav, Fialek Pavol

Advances in Science and Technology. Research Journal

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2021

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Vol. 15, no 3

66--75

EN

In carrying out manufacturing processes, an important role is played by the supply chain. Proper functioning of the supply chain is affected by several factors, the parameters and manifestation of which may change under situations of crises. However, disruptions may not solely pose a threat to supply chains that should be avoided. In some cases, the presence of risk may have a positive side to it, namely being the motivating factor initiating innovation. This may result in improvement of the status quo, increase in productivity and creating ways of eliminating consequences of risk. On a concrete example, the paper shall describe how innovation, spurred by crisis brought about by the current pandemic situation, can be implemented to the supply chain in the automotive sector.

4

Pallet Fixing Lock, Determination of Shear Resistance and Spring Stiffness

Hrabovský Leopold, Molnár Vieroslav, Kotajný Gustav, Kuľka Jozef

Advances in Science and Technology. Research Journal

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2020

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Vol. 14, no 2

190--197

EN

The paper contains the designs of modifications of testing devices, which were constructed for the purpose of checking the functional properties of the mechanical pallet fixing lock built by the KOMA – Industry s.r.o. company, which is used for securing pallets with cars in parking houses. The individual testing devices consist of one or two positioning devices, the moveable parts of which are placed perpendicular to each other in the frame of the testing device. A mechanical pallet fixing lock is attached to the moving part of the perpendicular positioning device, and it consists of the following three parts: the body, the pulley holder and a compression coil spring. A plate is attached to the moveable part of the horizontal positioning device and is adapted to receive a pressure force sensor or to engage a mechanical fixation lock or the break of an electromagnetic locking device. The paper contains the description and method of experimentally determined resistance, which is created by the shear friction on contact surface, when inserting or withdrawing the pulley holder tube from the plain bushing of the fixation lock body. Additionally, the paper provides the values of the measured vertical forces, which are generated by the deformed compression spring with a wire of circular cross-section during inserting/withdrawing of the pulley holder tube into/from the fixation lock body. The values obtained from the performed experimental measuring of vertical forces and frictional resistance during the inserting of the pulley holder tube into the plain bushing of the fixation lock body will be used for subsequent checking of the functional properties of pallet fixation locks and will allow determining the optimal position for attaching the pallet fixation locks to stack cell steel beams in the parking house, on which chain conveyers push pallets with cars are parked.

5

Modelling Noise Exposure by Means of Infrared Technology

Fedorko Gabriel, Heinz Dávid, Molnár Vieroslav, Brenner Tomáš

Advances in Science and Technology. Research Journal

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2019

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Vol. 13, no 4

230--238

EN

Noise measurement for the design of anti-noise measures is used as a tool to identify and evaluate the existing noise situation. The measurements are carried out in the vicinity of selected roads to demonstrate the need for the design of anti-noise measures or to assess the effectiveness of the measures. Where the measurements are performed for the design, detection and assessment of the effectiveness of a noise protection measure in relation to the protection of public health, such measurements shall be carried out by a person holding a Certificate of Professional Qualification for Qualitative and Quantitative Verification of Environmental Factors to assess their potential impact on health – noise measurement. The paper presents the modelling of the noise exposure using the infrared technology in the given area and the simulation of measures on the main road routes of the model.

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Regression model change of normal contact forces in hexagonal idler housing for pipe conveyor loaded with transported material

Molnár Vieroslav, Stehlíková Beáta

Advances in Science and Technology. Research Journal

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2018

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Vol. 12, no 2

244--251

EN

Pipe conveyors make up important elements of ecological transport systems. They ensure the material is transported in the conveyor belt coiled to the shape of a pipe. Various stresses impact their most important component - the conveyor belt - straining it in both, the longitudinal and the transverse direction. This phenomenon arises in connection with the shape of the conveyor route of the pipe conveyor, the width and thickness of the conveyor belt, the volume of the material conveyed, and the like. In recent years, more and more authors have been researching contact dependencies of the normal forces acting on the idler rolls located in idler housings. Their task is to design such structure of a conveyor belt that will put the least strain on the idler rolls, thus significantly reducing the power required to ensure the movement of the pipe conveyor. In this way, greater efficiency of eco-friendly transport will be achieved. Following experimental research, the paper describes a regression model of dependencies of normal contact forces on tension forces required, as per individual idler rolls in idler housing.