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![Nominal output torque values of single-stage gear units of manufacturer SIEMENS for particular values of the gear ratio for different axis heights and center distances [19, 20].](publication/335167168/figure/tbl3/AS:791794606432258@1565789953585/Nominal-output-torque-values-of-single-stage-gear-units-of-manufacturer-SIEMENS-for.png)
Nominal output torque values of single-stage gear units of manufacturer SIEMENS for particular values of the gear ratio for different axis heights and center distances [19, 20].
Source publication
The problem of defining the load (nominal torque on the output shaft - T2N) of universal gear drives depending on the size of the gear ratio is analysed in this paper. It is logical that the load capacity of gear drive depends on the weakest gear component. Since the gears are the most expensive components of gear unit, it tends to maximize their p...
Context in source publication
Context 1
... the analyzed gear transmissions are considered, it is evident that the maximum values of the load capacity are obtained for the gear ratio about 3.3. When using the dependence defined by the equation (3), it follows that the values of the nominal torque of the first (Table 2) and the last manufacturer (Table 4) correspond to this equations. It is interesting to note that all three manufacturers have similar values of gear ratios of the transmissions with the highest load carrying capacity. ...Citations
... Analyzing helical gear drives of different manufacturers and comparing their technical characteristics, firstly nominal output load and gear ratio, certain conclusion can be defined regarding the bearings lifetime. Based on this analysis, it was shown that load capacity of gear reducer is limited by the permissible loading of the bearing, i.e. its lifetime [23]. ...
The main features of creating an information model (Digital Twin) for a technically complicated item (TCI) are formulated. These include: a multitude of system representations of TCI, individualization of behavior and state under specific operating conditions, fatal uncertainty in the description of component properties, reconstruction of data based on sensor readings, individual lifetime expense of particular TCI in operation. Above features are illustrated by authors' developments in application to power transmissions. The key issues of synthesis, calculation, design and diagnostics of transmissions based on the created complex of lifetime-and-functional models are solved. Transmission is considered as a multicomponent system with a variable structure and states. It is shown that for the TCIs creating a single universal model to reproduce their basic properties is impossible. Principles of constructing models and methods for calculating, monitoring and predicting their functional and lifetime properties are described. The basic representations of the transmission (structure, regular mechanical system, kinematic and dynamic diagrams, diagnostic model, schemes of limiting states, lifetime expense model) and the mathematical models serving them are developed. The central point in TCI simulation is its individualization and reproducing the action of common load factors. The approaches considered are methodologically typical for complex mechanical and combined objects based on mechanical systems.
