Vibrations in engineering and technology

Iskovich-Lototskyy Rostyslav - Doctor of Science (Engineering), Professor, Department of "Branch Mechanical Engineering" of Vinnitsa National Technical University (95, Khmelnytsky Shose Str., Vinnytsia, Ukraine, 21021, e-mail: islord@ukr.net).

Veselovska Nataliia - Doctor of Engineering, Professor, Head of the Department of Machines and Equipment of Agricultural Production of Vinnitsa National Agrarian University (3 Soniachna St., Vinnytsia, Ukraine, 21008, e-mail: wnatalia@ukr.net).

Hnatyuk Olena is a post-graduate student of  correspondence form of study at Vinnitsa National Agrarian University (3 Soniachna St., Vinnytsia, Ukraine, 21008, e-mail: Alenagnatiuk1@gmail.com).

Due to the growth of bulk cargo transportation by road, it is necessary to increase the level of mechanization and automation of loading and unloading operations. In recent years, various powerful high-performance unloading machines of original designs (car tippers, vibrating platforms, elevators, etc.) have been created to mechanize unloading processes. This makes it possible to speed up unloading, reduce costs and reduce excessive downtime of dump trucks under unloading. However, the use of such machines is cost-effective at unloading points with a turnover of more than 30 dump trucks per day.

Therefore, the problem of creating simple and cheap equipment that ensures efficient unloading of dump trucks with bulk cargo, as well as cleaning of rolling stock from cargo residues, as regardless of the type and composition of cargo, some of them are delayed on the floor, in stamped ribs. pockets of all-metal body walls. The largest amount of cargo remains on the hatch covers, the angle of which is on average 300, while the angle of the actual slope of the cargo reaches 450 and more.

Due to this ratio of angles, even dry material cannot fall out completely through the hatch opening, let alone moistened or viscous bulk cargoes. The amount of bulk cargo residues depends on many factors (type of cargo, its humidity, size of pieces, air temperature, distance of transportation, method of unloading) and can be from 2 to 30% of the total weight of the cargo [1]. The use of useful vibrations allows to solve this problem the most expediently. Therefore, the development of a vibratory shock device for unloading vehicles is a promising and urgent task.

1. Iskovych-Lototsky, R., Matveev, I., Krat, V. (1982) Mashyny vybratsyonnoho y vybraudarnoho deystvyyа [Machines of vibration and vibration impact]. Tekhnyka, 208p.[in Russian].

2. Iskovych-Lototsky, R., Ivanchuk, Y. (2007) Doslidzhennya dynamiky protsesu roboty universalʹnoho hidravlichnoho vibroudranoho pryvodu dlya rozvantazhennya transportnykh zasobiv [ Investigation of the dynamics of the universal hydraulic vibration drive for unloading vehicles] Naukovi notatky. 20.184 – 187pp. [in Ukrainian]. 

3. Korn H., Korn, T. (1974) Spravochnyk po matematyke dlya nauchnykh rabotnykov y ynzhenerov. [Mathematics Handbook for Scientists and Engineers]Moscow: Nauka. [in Russian].

4. Iskovych-Lototsky, R., Zelinska, O., Ivanchuk, Y., Veselovska, N. (2017) Development of the evaluation model of technological parameters of shaping workpieces from powder materials. East European Journal of advanced technologies 2(85). 43 –46pp.[in Ukrainian]. 

5. Iskovych-Lototsky, R., Ivanchuk, Y. (2008) Zastosuvannya vibratsiynoho hidroimpulʹsnoho pryvoda v budivelʹnykh i dorozhnikh mashynakh  [The Application of a Vibrating Hydraulic Impulse Drive in Construction and Road Machines]. Kharkiv, 88.  48 – 54pp.[in Ukrainian]. 

6. Iskovych-Lototsky, R., Ivanchuk, Y. (2008) Pidvyshchennya efektyvnosti rozvantazhennya materialiv pid diyeyu periodychnykh udarnykh impulʹsiv. [ Improving the efficiency of material unloading under the action of periodic shock pulses]. Vibratsiyi v tekhnitsi i tekhnolohiyakh. №2(51). 8 – 11pp .[in Ukrainian]. 

7. Iskovych-Lototsky, R., Ivanchuk, Y. (2009) Vibroudarnyj prystrij dlia rozvantazennia kuzoviv samoskydivv. [ Improving the efficiency of material unloading under the action of periodic shock pulses]. Vibratsiyi v tekhnitsi i tekhnolohiyakh. №42(56). 8 – 11pp .[in Ukrainian].