Types of Compound Planetary Gear Trains

Arnaudov, Kiril; Karaivanov, Dimitar Petkov

doi:10.1201/9780429458521-29

Cited by 8 publications

(17 citation statements)

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“…Except in the book in question one can find a detailed description of the method in [7]. The torque method has some advantages:…”

Section: Torque Methods For Investigation Of Planetary Gear Trainsmentioning

confidence: 99%

Planetary Gear Trains – the Main Problems Gathered in a Book

Karaivanov¹

2019

Act Scie Agri

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Planetary gear trains are used in many areas of the technic including in the agriculture and food-processing machinery. The big number of types and great diversity of design solution make the choice of the most appropriate arrangement very difficult. A big number of articles, dissertations, books on the planetary gear trains exist. In more cases they carried out a separate problem or particular arrangement of planetary gear train. This review presents a book in which the main problems of almost all of used in practice cylindrical planetary gear trains are discussed. The book is addressed to engineers (design and industrial application) as well as to students-master and PhD degrees. The book is result of both scientific and practical experience of the authors. It was written under the motto "From practice to practice".

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“…Except in the book in question one can find a detailed description of the method in [7]. The torque method has some advantages:…”

Section: Torque Methods For Investigation Of Planetary Gear Trainsmentioning

confidence: 99%

Planetary Gear Trains – the Main Problems Gathered in a Book

Karaivanov¹

2019

Act Scie Agri

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“…Table 1 presents the PGT's assessment. Although overdimensioned for our benchmark, we have used ZF's RG350 Wolfrom PGT to try to assess the potential of high-ratio PGT configurations, based on existing evidence of its suitability to achieve high-ratios (Arnaudov and Karaivanov, 2005;Mulzer, 2010;Kapelevich and AKGears LLC, 2013). For the gearheads we have selected-supported by the manufacturers-suitable solutions from the portfolios of Wittenstein and Neugart.…”

Section: Planetary Gearheads: An Extremely Versatile Platformmentioning

confidence: 99%

Compact Gearboxes for Modern Robotics: A Review

et al. 2020

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On the eve of Human-Robot-Interaction (HRI) becoming customary in our lives, the performance of HRI robotic devices remains strongly conditioned by their gearboxes. In most industrial robots, two relatively unconventional transmission technologies-Harmonic Drives © and Cycloid Drives-are usually found, which are not so broadly used in other industries. Understanding the origin of this singularity provides valuable insights in the search for suitable, future robotic transmission technologies. In this paper we propose an assessment framework strongly conditioned by HRI applications, and we use it to review the performance of conventional and emerging robotic gearbox technologies, for which the design criterion is strongly shifted toward aspects like weight and efficiency. The framework proposes to use virtual power as a suitable way to assess the inherent limitations of a gearbox technologies to achieve high efficiencies. This paper complements the existing research dealing with the complex interaction between gearbox technologies and the actuators, with a new gearbox-centered perspective particularly focused on HRI applications.

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“…PGTs as a totality, and particularly complex multi-carrier PGTs cover a vast area of technical knowledge (Arnaudov & Karaivanov, 2005). By connecting the shafts of various gear train units, compound multi-carrier PGTs can be built.…”

Section: Introductionmentioning

confidence: 99%

“…Planetary gear transmissions have been the subject of studies appropriate to the optimizations argued in this paper. A comprehensive method for researching the transmission ratio, the internal power flows and the efficiency of complex multi-planetary gear trains was covered in (Arnaudov & Karaivanov, 2005), while the determination of an optimised planetary gear train with a short center distance, light weight and high mechanical efficiency as an important issue in the preliminary design of power transmissions is presented in (Daoudi et al, 2019) , where traditional optimisation methods and non conventional methods, such as Genetic Algorithm Optimisation are used to determine the optimal dimensions of epicyclic gear train components. Furthermore, conventional mathematical methods may be combined with methods of artificial intelligence, as in (Čabala & Jadlovsky, 2020), where the solution of multi-objective optimization of the production process of an automated assembly line model was presented.…”

Section: Introductionmentioning

confidence: 99%

Optimization of two-speed planetary gearbox with brakes on single shafts

et al. 2021

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This paper deals with configurations of complex planetary gear trains consisting of two planetary gear trains of basic type. These gear trains are formed by linking shafts from different component gearsets and contain two carriers, and therefore designated as two-carrier planetary gear trains with four external and two coupled shafts. The structural configurations are pointed out, and additional research has been made into gear trains using coupled external shafts for torque input and output, with the controlling brakes acting on single external shafts. The kinematic schemes have been created for all analyzed PGT variants, and the available transmission ratio ranges calculated for both speeds. The transmission ratio is changed by alternating the activation of each brake, enabling their use as transmissions with two transmission ratios in transportation technology and other engineering applications. Extreme transmission ratio changes have been determined for each analyzed PGT design solution. Also, relations of ideal torque ratios to the required transmission ratios of component planetary gear trains for both speeds have been calculated. These relations enable the selection of compound gear train designs which will achieve the required pair of transmission ratios. The optimal design parameters for the adopted configuration were determined, and the optimal transmission solution for the given input data selected.

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Types of Compound Planetary Gear Trains

Cited by 8 publications

References 0 publications

Planetary Gear Trains – the Main Problems Gathered in a Book

Planetary Gear Trains – the Main Problems Gathered in a Book

Compact Gearboxes for Modern Robotics: A Review

Optimization of two-speed planetary gearbox with brakes on single shafts

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