Influence of crank displacement angle on nonuniformity of roller forming installation motion with balanced drive

Authors

DOI:

https://doi.org/10.31548/machenergy2019.04.027

Keywords:

roller forming installation, driving mechanism, displacement, angular velocity, acceleration, unevenness.

Abstract

For a roller forming installation with a balanced drive mechanism for four molding bogies, the influence of the angle of displacement of the cranks on the nonuniformity of the engine is determined. Said installation is represented by a dynamic model with one degree of freedom, where the angular coordinate of crank rotation is taken as a generalized coordinate. For such a model, a differential equation of motion is written, for which a numerical method is used. When solving the differential equation of motion, the reduced moment of inertia of the whole plant, the moment of resistance forces to movement of forming bogies when forming articles from building mixtures, reduced to the axis of crank rotation, nominal design power of the driving engine is calculated. According to the calculated data, an asynchronous electric motor with a short-circuited rotor is selected, for which a mechanical characteristic is built according to the Kloss formula. Having solved the differential equation of motion with all certain characteristics, the function of changing the angular velocity of the crank from the moment of start-up and under the steady-state mode of motion is obtained. Thereafter, the time corresponding to the angular velocity value is calculated, and a function of changing the angular acceleration of the crank from the start-up moment and in the steady motion mode is obtained. Unevenness of motion of unit at steady motion mode is estimated by coefficient of unevenness of motion, coefficient of dynamic motion and generalized coefficient of motion estimation. Effect of angle of displacement of cranks at-water on unevenness of motion is monitored, as a result of which it is determined that specified coefficients have minimum values at displacement of cranks by angle 90 .

References

Garnec, V. M. (1991). Progressive concrete the forming units and complexes. Kyiv: Budivelnik. 144.

Garnec, V. M., Zajchenko, S. V., Chovnjuk, Ju. V., Shalenko, V. O. & Prihodko Ja. S. (2015). Concrete the forming units. Constructive and functional to the scheme, principle of action, theory basis. Kyiv: Interservis. 238.

Kuzin, V. N. (1981). Technology of roller formation of flat articles from fine-grained concrete. (Extended abstract of candidate thesis). Moscow construction institute, Moscow, USSR. 186.

Rjushin, V. T. (1986). Research of working process and development of a method of calculation of cars of roller formation of concrete mixes. (Unpublished candidate thesis). Kyiv construction institute, Kyiv, USSR.

Loveikin, V. S. & Pochka, K. I. (2004). The dynamic analysis of roller forming installation with the rekuperativ drive. Dynamics, durability and reliability of farm vehicles. Works of the first International scientific and technical conference (DSR AM-I), P. 507-514. Ternopil.

Loveikin, V. S. & Pochka, K. I. (2007). Results of pilot studies of the modes of the movement of roller forming installation with the rekuperativ drive. The bulletin of the Kharkov national university of agriculture of P. Va-silenko, vol. 1, No. 59, P. 465-474.

Loveikin, V. S. & Pochka, K. I. (2017). Synthesis of camshaft driving mechanism in roller molding installation with combined motion mode according to acceleration of third order. Science & Technique. No. 16 (3), 206-214. (in Russian).

https://doi.org/10.21122/2227-1031-2017-16-3-206-214

Loveikin, V. S., Pochka, K. I., Romasevich, Yu.O. & Pochka, O. B. (2019). Dynamic analysis of roller forming installation about a crank connecting rod the driving mechanism. Opir materialiv i teoriia sporud. - K.: KNUBA, Vyp. 102, P. 91-108.

https://doi.org/10.32347/2410-2547.2019.102.91-108

Lovejkin, V. S., Pochka, K. I., Romasevich, Yu.O. & Loveikin, J. V. (2018). Dynamic analysis of roller molding installation taking into account dissipative properties balanced drive mechanism. Machinery & Energetics. Journal of Rural Production Research. Kyiv. Ukraine.. Vol. 9, No. 3, P. 45-58. doi.org/10.31548/me2018.03.045.

Lovejkin, V. S., Pochka, K. I. & Romasevich, Yu.O. (2019). Influence of a corner of shift of cranks on dynamics of roller forming installation taking into account dissipative properties of the balanced driving mechanism. Herald of the Donbass State Engineering Academy. № 1 (45), P. 73-91. https://doi.org/10.32347/2410-2547.2019.102.91-108

Loveikin, V. S. & Pochka, K. I. (2015). Research of loadings in elements of roller forming installation with the balanced drive. Automation of productions in mechanical engineering and instrument making, National University "Lviv Poly-equipment", No 49, P. 73-79.

Loveikin, V. S. & Pochka, K. I. (2016). Analysis of dynamic equilibration of drives of cars of roller formation. MOTROL. Commission of Motorization and Energetics in Agriculture, Lublin-Rzeszow, vol. 18, No 3, P. 41-52.

Lovejkin, V. S. & Pochka, K. I. (2004). Analysis of the movement of roller forming installation with the balanced drive. Bulletin of the Kharkiv national automobile and road university, No. 27, P. 95-101.

Lovejkin, V. S. & Pochka, K. I. (2015). Analysis of unevenness of the movement of roller forming installation with the balanced drive. MOTROL. Commission of Motorization and Energetics in Agriculture, Lublin- Rzeszow, vol. 17, No 3, P. 17-27.

Lovejkin, V. S. & Pochka, K. I. (2013). Analysis of nonuniformity of drive mechanisms of roller forming machines. Construction technique, № 30, P. 23-32.

Pat. 32838 UA, IPC B28B 13/00, Installation for formation of products from concrete mixes, Lovejkin, V. S., Jaroshenko, V. F., Pochka, K. I., Publ. 10.06.2008.

Pat. 7884 UA, IPC B28B 13/00, Installation for formation of products from concrete mixes, Lovejkin, V. S., Jaroshenko, V. F., Pochka, K. I., Bichevs'kij V. M., Publ. 15.07.2005.

Artobolevskij, I. I. (1975). Mechanism and machine theory. M.: Nauka.

Orlov, I. N. (1986). Electrotechnical reference book. Vol. 2. Electrotechnical products and devices. Moscow: Jenergoatomizdat, 712 p.

Shejnblit, A. E. (1991). Course design of details of cars: Manual for technical schools. Moscow: Vysshaja shkola, 432 p.

Lovejkin, V. S. (1989). Evaluation of the movement of mechanisms and machines. Lifting and transportation equipment. K.: Tjehnika, P. 16-18.

Downloads

Published

2020-01-30

Issue

No. 10(4) (2019)

Section

Статті

License

Relationship between right holders and users shall be governed by the terms of the license Creative Commons  Attribution – non-commercial – Distribution On Same Conditions 4.0 international (CC BY-NC-SA 4.0):https://creativecommons.org/licenses/by-nc-sa/4.0/deed.uk

Authors who publish with this journal agree to the following terms:

  • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).