MINIMIZATION OF DYNAMIC STRESSES IN LIFTING MECHANISM OF HOISTING MACHINERY

Authors

  • V. S. Loveykin ,
  • Yu. V. Chovnyuk
  • I. O. Kadikalo

Abstract

The influence of different conditions for lifting good ( "the weight", "picked out") and of various rope’s stiffness (absolutely hard and elastic) on the magnitude of dynamic loads in elastic elements is discussed.One may reduce these loads  and dynamic coefficient, as well, with the help of choice of modes of motion required for drive mechanisms during the transieut processes.The dymamic optimization (minimization) of the mentioned above loads of the cargo ropes of hoisting machines for the mechanism of lifting cranes is proposed. One may use the two – mass model for these aims.

Conducted a comprehensive analysis of the effect of conditions of lifting of loads with the weight and stiffness of the rope (absolutely rigid / elastic) coefficient of dynamic loads in the elastic elements (ropes) hoisting mechanisms of cranes.

Proposed and substantiated the essential modes of motion of the lifting mechanism of the cargo crane (within Domanovo model) that minimize the ratio of dynamic loads in the cargo ropes for lifting equipment when lifting "weights".

The obtained results can further be used in the improvement and refinement of engineering methods of calculation of load-lifting mechanisms of cranes as at the stages of design/construction and the modes of their actual operation.

References

Volkov, D. P. (1958). Dynamycheskye nahruzky v unyversal'nykh еkskavatorakh – kranakh [Dynamic loads in the generic excavators – cranes]. M.: Mashhyz, 269.

Kozhevnykov, S. N. (1986). Dynymyka nestatsyonarnykh protsessov v mashynakh [Dinamica non-stationary processes in machines]. K.: Naukova dumka, 288.

Loveykyn, V. S. (1990). Raschety optymal'nykh rezhymov dvyzhenyya mekhanyzmov stroytel'nykh mashyn [Calculations of optimum modes of movement of construction machinery]. K.: UMK VO, 166.

Loveykin, V. S. (1988). Minimizatsiya dynamichnykh navantazhen' v pruzhnykh elementakh vantazhopidyomnykh mashyn [Minimization of dynamic loads in the elastic elements of lifting machines]. Mining, construction, road and reclamation machines. K., Vyp. 52, 63–68.

Hoberman, L. A., Stepanyan, K. V., Yarkyn, A. A., Zalens'kyy V. S. (1979). Teoryya, konstruktsyya y raschet stroytel'nykh y dorozhnykh mashyn [Theory, design and calculation of building and road machines]. M.: Mashynostroenye, 407.

Holubentsev, N. A. (1959). Dynamyka perekhodnykh protsessov v mashynakh so mnohymy massamy [Dynamics of transients in machines with many masses]. M.: Mashhyz, 147.

Veyts, V. L. (1969). Dynamyka mashynnykh ahrehatov [Dynamics of machine units]. L.: Mashynostroenye, 370.

Vul'fson, Y. Y., Kolovskyy M. Z. (1969). Dynamyka mashynnykh ahrehatov [Dynamics of machine units]. L.: Mashynostroenye, 370.

Komarov, M. S. (1968). Nelyneynye zadachy dynamyky mashyn [Nonlinear problems of dynamics of machines]. M.: Mashynostroenye, 284.

Kazak, S. A. (1968). Dynamyka mostovykh kranov [Dynamics of bridge cranes]. M.: Mashynostroenye, 331.

Hokhberh, M. M. (1969). Metallycheskye konstruktsyy podemno-transportnykh mashyn [Metal constructions of lifting-transport machines]. M.: Mashynostroenye, 520.

Lobov, N. A. (1987). Dynamyka hruzopodъemnykh kranov [Dynamics of load-lifting cranes]. M.: Mashynostroenye, 160.

Haydamaka, V. F. (1989). Hruzopodemnye mashyny [Hoisting machine]. K.: Vyshcha shkola, 328.

Budykov, L. Ya. (1997). Mnohoparametrycheskyy analyz dynamyky hruzopodъemnykh kranov mostovoho typa [Multivariable analysis of the dynamics of load-lifting cranes of bridge type]. Luhansk: Yzd. Vo VUTU, 210.

Loveykin, V. S., Chovnyuk, Yu. V. Dikteruk, M. H., Pastushenko, S. I. (2004). Modelyuvannya dynamiky mekhanizmiv vantazhopidyomnykh mashyn [Modeling of dynamics of mechanisms of hoisting machines]. K. Mykolayiv: RVV MDAU, 286.

Hrobov, V. A. (1982). Teoryya kolebanyy mekhanycheskykh system [Theory of oscillations of mechanical systems]. K.: Vyshcha shkola, 183.

Novak, S. M., Lohvynets, A. S. (1990). Zashchyta ot vybratsyy y shuma v stroytel'stve : spravochnyk [Protection against vibration and noise in construction : handbook]. K.: Budivel'nyk, 184.

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Published

2016-12-28

Issue

No. 251 (2016)

Section

Статті

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