Е-Публикации
Технически университет - София

Абстракт: The paper presents the results of the research of an innovative scheme of a friction Variator with a large load capacity and minimized sliding in the process of adjusting the transmission ratio. This is achieved by making the friction surfaces at the contact point have close modulus and different curvatures, i.e. one to be convex and the other concave, while they must be contours of centroid pairs. In this way the unwanted slippage is minimized when controlling the Variator. Based on the differential geometry, the equations of the conjugated contours were obtained in the analytical form of which the friction rotary surfaces were constructed. The range of change in the transmission ratio of the proposed, significantly exceeds three (D>3) - the most common in engineering practice.

Библиография

1. [1] Б. А. Пронин, Г. А. Ревков. Бесступенчатые клиноременные и фрикционые передачи. Изд. „Машиностроение“, Москва 1980. (in Russian) [2] А. И. Леонов, А. Ф. Думбровский. Механические бесступенчатые нефрикционные передачи непрерывного действия. Изд. „Машиностроение“, Москва 1984. (in Russian) [3] С. Н. Кожевников, Я. И. Есипенко, Я. М. Раскин. Механизмы. Изд. „Машиностроение“, Москва1976. (in Russian) [4] Мальцев В. Ф. Механические импульсные передачи.Изд. „Машиностроение“, Москва 1978. (in Russian ) [5] Иванченко П. Н., Шапиро Б. З. Електромеханические передачи. Машгиз, Москва 1962. ( in Russian ) [6] Митев Д., Петров П. Шарнирно-лостов импулсен вариатор. Сп. „Машиностроене“, бр. 8, 1983. (in Bulgarian) [7] Петров Д., Зекова А., Маринчев М. Кинематични и кинетостатични характеристики на реверсивна предавка с адаптивно изменение на предавателното отношение. Сп. „Механика на машините“, № 22, 1998 г. (in Bulgarian) [8] Петров Д., Зекова А. Моделиране на предавка с адаптивно изменение на предавателното отношение.Сп. „ Механика на машините“, № 19, 1997 г. (in Bulgarian) [9] К. Стоичков, Я.Софронов. Сравнителен анализ по товароносимост между фрикционна и зъбна предавка. Сп „Българско списание за инженерно проектиране“ (in Bulgarian ) [10] D. Myszka, A. Murray, K. Giaier, V. Japrakash. A Mechanical Regenerative Brake and Launch Assist using an Open Differential and Elastic Energy Storage. SAE lnt. J Alt. Power 4 (1), 555 (2015). [11] R. Kapoor, C. Parveen. Comparativ study on various KERS. Proceeding of the World Congress on Engineering. WCE 2013, Vol. III, July 3-5, London UK, ISBN:978-988-19252-9-9, 2013. [12] A. Daberkow, M. Ehlert, D. Kaise. Elekctric car operation and flywheel energy storage. Ln: Lienkamp M. (eds) Conference on Future Automotive Technology, Springer, ISBN 978-3-658-01140-6, 19 (2013). [13] Magnetic Continuously Variable Transmissions. Magnetics mag. com. 4 November, 2013. Retrieved 16 July 2020. [14] Geometry of half-toroidal CVT. https://www.researchgate. net . [15] Toroidal CVT with compact roller suspension. https://www.tu-chemnitz.de [16] Jivkov V., Stoichkov K., Friction Variator with increase capacity and minimal slippage during steering ; Patent Agency – Bulgaria, № BG/P/ 113653 09.02.2023 .

Издание

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Abstract: The paper presents the results of the research of an innovative scheme of a friction Variator with a large load capacity and minimized sliding in the process of adjusting the transmission ratio. This is achieved by making the friction surfaces at the contact point have close modulus and different curvatures, i.e. one to be convex and the other concave, while they must be contours of centroid pairs. In this way the unwanted slippage is minimized when controlling the Variator. Based on the differential geometry, the equations of the conjugated contours were obtained in the analytical form of which the friction rotary surfaces were constructed. The range of change in the transmission ratio of the proposed, significantly exceeds three (D>3) - the most common in engineering practice.

References

1. [1] Б. А. Пронин, Г. А. Ревков. Бесступенчатые клиноременные и фрикционые передачи. Изд. „Машиностроение“, Москва 1980. (in Russian) [2] А. И. Леонов, А. Ф. Думбровский. Механические бесступенчатые нефрикционные передачи непрерывного действия. Изд. „Машиностроение“, Москва 1984. (in Russian) [3] С. Н. Кожевников, Я. И. Есипенко, Я. М. Раскин. Механизмы. Изд. „Машиностроение“, Москва1976. (in Russian) [4] Мальцев В. Ф. Механические импульсные передачи.Изд. „Машиностроение“, Москва 1978. (in Russian ) [5] Иванченко П. Н., Шапиро Б. З. Електромеханические передачи. Машгиз, Москва 1962. ( in Russian ) [6] Митев Д., Петров П. Шарнирно-лостов импулсен вариатор. Сп. „Машиностроене“, бр. 8, 1983. (in Bulgarian) [7] Петров Д., Зекова А., Маринчев М. Кинематични и кинетостатични характеристики на реверсивна предавка с адаптивно изменение на предавателното отношение. Сп. „Механика на машините“, № 22, 1998 г. (in Bulgarian) [8] Петров Д., Зекова А. Моделиране на предавка с адаптивно изменение на предавателното отношение.Сп. „ Механика на машините“, № 19, 1997 г. (in Bulgarian) [9] К. Стоичков, Я.Софронов. Сравнителен анализ по товароносимост между фрикционна и зъбна предавка. Сп „Българско списание за инженерно проектиране“ (in Bulgarian ) [10] D. Myszka, A. Murray, K. Giaier, V. Japrakash. A Mechanical Regenerative Brake and Launch Assist using an Open Differential and Elastic Energy Storage. SAE lnt. J Alt. Power 4 (1), 555 (2015). [11] R. Kapoor, C. Parveen. Comparativ study on various KERS. Proceeding of the World Congress on Engineering. WCE 2013, Vol. III, July 3-5, London UK, ISBN:978-988-19252-9-9, 2013. [12] A. Daberkow, M. Ehlert, D. Kaise. Elekctric car operation and flywheel energy storage. Ln: Lienkamp M. (eds) Conference on Future Automotive Technology, Springer, ISBN 978-3-658-01140-6, 19 (2013). [13] Magnetic Continuously Variable Transmissions. Magnetics mag. com. 4 November, 2013. Retrieved 16 July 2020. [14] Geometry of half-toroidal CVT. https://www.researchgate. net . [15] Toroidal CVT with compact roller suspension. https://www.tu-chemnitz.de [16] Jivkov V., Stoichkov K., Friction Variator with increase capacity and minimal slippage during steering ; Patent Agency – Bulgaria, № BG/P/ 113653 09.02.2023 .

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