Smart Search 


4_2024_sen_6

Title of the article GEOMETRICAL ANALYSIS OF THE HINGE MECHANISM OF A CENTRIFUGAL LIFT SPEED LIMITER WITH TWO OUTPUT LINKS
Authors

KUTSEPOLENKO Alexander V., Head of the Scientific Work Bureau of the Lift Machine Building Industry Laboratory of the Scientific and Technical Centre, JSC “Mogilevliftmash”, Mogilev, Republic of Belarus; Postgraduate student of the Department “Machine Design Fundamentals”, Belarusian-Russian University, Minsk, Republic of Belarus; This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section MECHANICAL ENGINEERING COMPONENTS
Year 2024
Issue 4(69)
Pages 61–69
Type of article RAR
Index UDK 621.83.06
DOI https://doi.org/10.46864/1995-0470-2024-4-69-61-69
Abstract The article draws attention to the emergence of new promising designs of double-acting centrifugal speed limiters with a horizontal position of the axes of their devices controlling the excess speed, for example, the design of the speed limiter Vega, manufactured by Dynatech, with a horizontal position of the axis of its centrifugal device controlling the overspeed and the counter arrangement of its working bodies. The structural scheme of a similar speed limiter developed at JSC “Mogilevliftmash” is presented, which differs by collinear arrangement of the pulley and its centrifugal mechanism. The attention is paid to the absence in the free press of the design and calculation methodology of the above-mentioned speed limiters with the counter arrangement of the working bodies. The structural scheme is analyzed and attention is drawn to its asymmetry. The geometrical analysis of the articulated crank-and-rocker mechanism of the speed limiter with two output links (rocker arms) connected by connecting rods with a common input link (crank) is carried out. The dependences of the displacement of the output links on the angle of rotation of the input link are established for both parts of the mechanism, and their difference is confirmed. For the investigated speed limiter with specific dimensions of the mechanism links, the actual asynchrony of the displacement of the output links is determined. Attention is drawn to the necessity to ensure invariance of operation of the double-acting speed limiter regardless of the direction of rotation of its pulley. It is shown that non-synchronous movement of working bodies can lead to partial loss of functionality of the speed limiter and, accordingly, transformation of the double-sided limiter into a single-acting one. The problem of expediency of selection of possible variants of optimum combination of sizes of links of the mechanism is formulated for reduction of movement asynchrony of its output links and possibility of using the investigated structural scheme in precision mechanisms, in particular, in the double-acting centrifugal lift speed limiter.
Keywords double-acting centrifugal lift speed limiter, crank-and-rocker mechanism with two output links
  You can access full text version of the article.
Bibliography
  1. Arkhangelskiy G.G., et al. Lifty [Lifts]. Moscow, Assotsiatsiya stroitelnykh vuzov Publ., 2010. 576 p. (in Russ.).
  2. Vitchuk P.V., Mokin D.G. Metodika rascheta liftovogo ogranichitelya skorosti s inertsionnym rolikom [Method of calculation of the elevator speed limiter with the inertial roller]. Vestnik MGSU, 2016, no. 7, pp. 134–141 (in Russ.).
  3. Francisco de Asis M.M. Speed limiting device for elevators. Patent ES, no. ES1046934U, 2001.
  4. Francisco de Asis M.M. Speed limiting system for lifting devices. Patent US, no. US2007007499A1, 2007.
  5. Kutsepolenko A.V., Podymako M.E., Kniazeu K.N., Sinitsyn H.S., Dalimaev V.A. Razrabotka tsentrobezhnogo dvukhstoronnego ogranichitelya skorosti lifta i optimizatsiya ego vykhodnykh kharakteristik na osnovanii analiza vliyaniya sil treniya v zvenyakh mekhanizma [Development of centrigugal bidirectional overspeed governors of elevator and optimization of its output characteristics based on the analysis of the influence of friction forces in the mechanism links]. Aktualnye voprosy mashinovedeniya, 2021, iss. 10, pp. 107–115 (in Russ.).
  6. Kutsepolenko A.V., Podymako M.E., Dondik S.A., Sinitsyn G.S., Knyazev K.N. Dvukhstoronniy ogranichitel skorosti lifta [Double-acting lift speed limiter]. Utility model patent BY, no. 12 899, 2022 (in Russ.).
  7. Kutsepolenko A.V., Podymako M.E., Lustenkova E.S. Razrabotka konstruktsii zaklinivayushchikh elementov ogranichitelya skorosti lifta dvukhstoronnego deystviya [Development of design of jamming elements of double-acting lift speed limiter]. Materialy Mezhdunarodnoy nauchno-tekhnicheskoy konferentsii “Materialy, oborudovanie i resursosberegayushchie tekhnologii” [Proc. International scientific and technical conference “Materials, equipment and resource-saving technologies”]. Mogilev, 2022, p. 86 (in Russ.).
  8. Kutsepolenko A.V., Podymako M.E., Lustenkova E.S. Sovremennye napravleniya razvitiya konstruktsiy tsentrobezhnykh ogranichiteley skorosti liftov [Modern directions of development of designs of centrifugal lift speed limiters]. Materialy Mezhdunarodnoy nauchno-tekhnicheskoy konferentsii “Materialy, oborudovanie i resursosberegayushchie tekhnologii” [Proc. International scientific and technical conference “Materials, equipment and resource-saving technologies”]. Mogilev, 2023, pp. 86–87 (in Russ.).
  9. Kutsepolenko A.V., Antonevich A.I., Nepsha D.V. Sovremennye sredstva obespecheniya bezopasnosti vo vremya dvizheniya kabiny lifta vverkh i pri ee ostanovke v etazhnoy ploshchadke [Modern means of ensuring safety during the upward movement of the elevator car and when it stops in the floor area]. Science & technique, 2023, vol. 22, no. 6, pp. 460–469. DOI: https://doi.org/10.21122/2227-1031-2023-22-6-460-469 (in Russ.).
  10. Lustenkov M. E., Kutsepolenko A.V. Geometricheskiy analiz tsentrobezhnogo ogranichitelya skorosti lifta so vstrechnym raspolozheniem zaklinivayushchikh elementov [Geometrical analysis of a centrifugal overspeed governor with counter arrangement]. Vestnik Belorussko-Rossiyskogo universiteta, 2024, no. 2(83), pp. 47–55. DOI: https://doi.org/10.24412/2077-8481-2024-2-47-55 (in Russ.).
  11. Gudimova L.N., Dvornikov L.T., Bolshakov N.S. Problema sloynosti ploskikh sharnirnykh rychazhnykh mekhanizmov [Layerability problem of planar articulated lever arm mechanisms]. Bulletin of the Tomsk Polytechnic University, 2009, vol. 314, no. 2, pp. 35–39 (in Russ.).
  12. Balakhnina A.A. Prikladnaya mekhanika. Teoriya mekhanizmov i mashin [Applied mechanics. Theory of mechanisms and machines]. Tolyatti, Tolyattinskiy gosudarstvennyy universitet Publ., 2015. (in Russ.)
  13. Gurin V.V., Zamyatin V.M., Popov A.M. Mekhanika [Mechanics]. Tomsk, Tomskiy politekhnicheskiy universitet Publ., 2010. 581 p. (in Russ.)
  14. Kiselev V.M. O klassifikatsiyakh ploskikh sharnirnykh chetyrekhzvennykh mekhanizmov, osnovannykh na sootnoshenii dlin ikh zvenev. Chast 1 [On classifications plane four-bar linkage hinged, based on the ratio of the lengths of their links. Part 1]. Problems of modern science and education, 2019, no. 6(139), pp. 19–32 (in Russ.).
  15. Eremyants V.E. Postroenie i analiz dinamicheskikh modeley mekhanizmov. Ch. 5. Dinamicheskie modeli mashin s ploskimi sharnirno-rychazhnymi mekhanizmami [Construction and analysis of dynamic models of mechanisms. Part 5. Dynamic models of machines with flat hinge-lever mechanisms]. Bishkek, Kyrgyzsko-Rossiyskiy slavyanskiy universitet Publ., 2007. 56 p. (in Russ.).
  16. Galkin P.A. TMM. Sintez i kinematicheskiy analiz rychazhnykh mekhanizmov [Theory of mechanisms and machines. Synthesis and kinematic analysis of lever mechanisms]. Tambov, GOU VPO TGTU Publ., 2010. 32 p. (in Russ.).
  17. Artobolevskiy I.I. Mekhanizmy v sovremennoy tekhnike. T. I. Elementy mekhanizmov. Prosteyshie rychazhnye i sharnirno-rychazhnye mekhanizmy [Mechanisms in modern technology. Vol. I. Elements of mechanisms. The simplest lever and hinge-lever mechanisms]. Moscow, Nauka. Glavnaya redaktsiya fiziko-matematicheskoy literatury Publ., 1979. 496 p. (in Russ.).
  18. Timofeev G.A. Teoriya mekhanizmov i mekhanika mashin [Theory of mechanisms and mechanics of machines]. Moscow, MGTU im. N.E. Baumana Publ., 2022. 566 p. (in Russ.).
  19. Artobolevskiy I.I. Teoriya mekhanizmov i mashin [Theory of mechanisms and machines]. Moscow, Nauka. Glavnaya redaktsiya fiziko-matematicheskoy literatury Publ., 1988. 640 p. (in Russ.).