A flexible shaft planetary gear drive for valve actuators, providing automatic gear shifting based on load, is proposed. The design features two wheels providing internal engagement having a small difference in the numbers of their teeth, along with a leading carrier, an angular clutch and a flexible element made either in the form of a rod having the same section or a beam of equal resistance. Calculations showed that a flexible rod having the same cross section implies a 40–50 % increased length relative to a rod having the form of a beam of equal resistance; this has significant implications for the mass and dimensional characteristics of the drive.
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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, Vol. 57, No. 5, pp. 26–32, May, 2021.
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Suntsov, A.S., Vichuzhanina, E.F. & Perminova, O.M. Parameter Optimization of Two-Speed Manual Drive with Automatic Speed Change for Stop Valves. Chem Petrol Eng 57, 410–415 (2021). https://doi.org/10.1007/s10556-021-00952-7
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DOI: https://doi.org/10.1007/s10556-021-00952-7