Das Bestreben nach immer kompakteren und leistungsfähigeren Antrieben verhilft der Zahnkupplung derzeit zu neuer Popularität. Sie ist in der Lage, vergleichsweise große Axial- und Winkelbewegungen auszuführen und Radialverlagerungen (Reihenschaltung) aufzunehmen. Insbesondere im Zusammenhang mit beweglich aufgehängten Getrieben gewinnt die Kenntnis über das Betriebs- und Rückstellverhalten im Betrieb zunehmend an Bedeutung. / The trend towards more and more compact and more efficient transmissions helps the gear coupling to get new popularity. It is able to perform relatively large axial and angular motions and to absorb radial displacements. Especially in connection with movably supported gear units the knowledge about its restoring behaviour in operation becomes increasingly significant. Therefore the question was initiated in order to develop a method for the determination of axial restoring forces of driver gearings which are capable of displacements.

In den vergangenen Jahrzehnten sind die aktuellen Auslegungsgrundlagen für Mitnehmerverzahnungen in Zahnkupplungen erarbeitet und für die praktische Anwendung nutzbar aufbereitet worden. Ein seit jeher bestehendes Problem aber ist die nicht prognostizierbare Verschleißerscheinung Fressen innerhalb der Verzahnung. Diese Unkenntnis erschwert eine zuverlässige, betriebssichere Bemessung von Zahnkupplungen in hohem Maße. Die vorliegende Arbeit behandelt die Entwicklung eines Berechnungsansatzes zur Bestimmung der Fresstragfähigkeit von verlagerungsfähigen Mitnehmerverzahnungen in ölgefüllten Zahnkupplungen. Sie leistet damit einen Beitrag zur Erweiterung der bestehenden Bemessungsmethode und bietet für weiterführende Forschungstätigkeiten eine substanzielle Grundlage. / Over the past decades, the current design bases of gear coupling indentations have been developed and prepared for practical application. Nevertheless, scuffing is one of the most considerable design problems, due to the fact that it is not predictable. This lack of knowledge complicates a reliable and fail-safe dimensioning crucially. The presented dissertation deals with the formulation of a calculation approach concerning the determination of scuffing load capacity of displaceable indentations in oil-filled gear couplings. It contributes to the enhancement of the current method of structural design and it serves a substantial basis for further research projects.

In den vergangenen Jahrzehnten sind die aktuellen Auslegungsgrundlagen für Mitnehmerverzahnungen in Zahnkupplungen erarbeitet und für die praktische Anwendung nutzbar aufbereitet worden. Ein seit jeher bestehendes Problem aber ist die nicht prognostizierbare Verschleißerscheinung Fressen innerhalb der Verzahnung. Diese Unkenntnis erschwert eine zuverlässige, betriebssichere Bemessung von Zahnkupplungen in hohem Maße. Die vorliegende Arbeit behandelt die Entwicklung eines Berechnungsansatzes zur Bestimmung der Fresstragfähigkeit von verlagerungsfähigen Mitnehmerverzahnungen in ölgefüllten Zahnkupplungen. Sie leistet damit einen Beitrag zur Erweiterung der bestehenden Bemessungsmethode und bietet für weiterführende Forschungstätigkeiten eine substanzielle Grundlage. / Over the past decades, the current design bases of gear coupling indentations have been developed and prepared for practical application. Nevertheless, scuffing is one of the most considerable design problems, due to the fact that it is not predictable. This lack of knowledge complicates a reliable and fail-safe dimensioning crucially. The presented dissertation deals with the formulation of a calculation approach concerning the determination of scuffing load capacity of displaceable indentations in oil-filled gear couplings. It contributes to the enhancement of the current method of structural design and it serves a substantial basis for further research projects.

Das Bestreben nach immer kompakteren und leistungsfähigeren Antrieben verhilft der Zahnkupplung derzeit zu neuer Popularität. Sie ist in der Lage, vergleichsweise große Axial- und Winkelbewegungen auszuführen und Radialverlagerungen (Reihenschaltung) aufzunehmen. Insbesondere im Zusammenhang mit beweglich aufgehängten Getrieben gewinnt die Kenntnis über das Betriebs- und Rückstellverhalten im Betrieb zunehmend an Bedeutung. / The trend towards more and more compact and more efficient transmissions helps the gear coupling to get new popularity. It is able to perform relatively large axial and angular motions and to absorb radial displacements. Especially in connection with movably supported gear units the knowledge about its restoring behaviour in operation becomes increasingly significant. Therefore the question was initiated in order to develop a method for the determination of axial restoring forces of driver gearings which are capable of displacements.

The aim of this work was to create a design of a gear coupling for railway vehicle application. The work presents a comprehensive view of this issue. First of all, a brief theoretical introduction to the issue is made. The practical part follows, where the design of the whole coupling and especially the newly designed solutions are described in detail. The strength analysis performed deal with the key components that are necessary to ensure safe operation. These analyses can be applied not only for this particular case, but also to gear couplings of different designs, because in principle these calculations do not differ much. In the last chapter, which deals with the dynamic model, all the theoretical assumptions are verified, especially the coupling movements and the applied loads. If the reader deals with the issue of gear couplings, not only in the railway industry, this work presents a comprehensive view of this component. The designed coupling and all performed simulations are really usable in operation.

This thesis deals with the contact analysis study of crown gear couplings during the simulation of its working conditions. The toothed coupling transmits high torque, even when the input and output shafts are misaligned due to outside tooth shape. For this reason, it is necessary to design the gear shape correctly. The inherent use of toothed couplings results in a wide range of working speeds and load transfers. This can cause several problems, if the parameters are selected incorrectly. Among the most significant of these is the generation of vibrations during gear engagement, accompanied by noise and the excessive loading of components, such as shafts and bearings. It is not possible to completely reduce uneven running, even with knowledge of the latest trends in the field of gear development. For this reason, it is necessary to eliminate the paths where the vibrations can propagate during the design itself. Inefficient and costly experiments are often used to determine the correct shape of gear teeth. For this purpose, a computational approach to describe a contact pressure on the teeth of couplings at different misalignment and loads is proposed. The model helps to understand the composition of the contact pressure during the working mode of misalignment and its behaviour within the rotation of the gear coupling. The introductory part of thesis presents the current state of knowledge of gear couplings and a description of load distribution issues, regarding the angular misalignment, torque and friction. In the following chapter, three possible approaches to the problem are described - analytical, experimental and computational. The following work offers the introduction and creation of two different computational models, varying in different tooth shape on the hub and the sleeve. Each geometry was subjected to a different load moment, a misalignment of the hub, or the rotation of the gear coupling as a whole. The main monitored parameter was the course of contact pressure in each step, when changing the degree of misalignment or the rotation of the model. Finally, three main sets of contact pressure on the teeth are presented, in connection with the reduced pressure plotted on the toothed rings. There is derivation of results and mutual comparison of each load case. The computation approach in FEM program Ansys Workbench was used to solve the problem.