Vibrations in engineering and technology

Obertykh Roman – Cand. Sc. (Eng.), Associate Professor, Vinnytsia National Technical University, Associated Professor of the Department of Іndustrial engineering, Vinnitsa National Technical University, (e-mail: obertyuh557@gmail.com, tel. +380432598523, Ukraine, 21021, Vinnitsa, 95, Khmelnytsky Highway St., apt. 1204.)

Slabkiy Andrey – Cand. Sc. (Eng.), Associated Professor of the Department of Іndustrial engineering, Vinnitsa National Technical University, (e-mail: SlabkiyAndrey@gmail.com, tel. +380432598523, Ukraine, 21021, Vinnitsa, 95, Khmelnytsky Highway St., apt. 1204.)

Bacalets Dmutro —  Cand. Sc. (Eng.), Associated Professor of the Department of Іndustrial engineering, Vinnitsa National Technical University (e-mail: BacaletsDima@gmail.com, tel. +380432598523, Ukraine, 21021, Vinnitsa, 95, Khmelnytsky Highway St., apt. 1204.): 

The design scheme of a small-sized hydroimpulse vibrator - a hydraulic cylinder based on an annular spring - is considered. The executive link of the vibrator in the form of a cylindrical plunger of a hydraulic power cylinder is loaded with an annular spring (main), the preliminary deformation of which can be adjusted by a screw mechanism in the form of a sleeve, which is guided along the cylindrical surface of the outlet end of the vibrator plunger and through the central axial bore of the sleeve, which houses the plunger and the main ring spring, and the cap nut, screwed onto the sleeve, and in contact with the outer end of the sleeve of the screw mechanism, and the inner end of the sleeve rests against the outer ring of the main ring spring.

The parametric generator of pressure pulses (PPG) in the working fluid (energy carrier) of the vibrator is formed due to the main structural and spring-force elements (plunger, floating saddle and ring springs). PPG contains two degrees of sealing - first and second. The closing element of the valve type (chamfered) of the first stage of PPG sealing is designed in the form of a ground wide chamfer on the inner end of the vibrator plunger, which interacts with the first chamfer of a smaller diameter of the floating saddle, loaded with an additional short ring spring. The floating seat has a second chamfer of a larger diameter, the contact of which with the wide ground chamfer of the sleeve-valve, which is located on the cylindrical part of the closing element of the first stage of PPG sealing and is coupled with it by an exact running fit, forms the second stage of PPG sealing. In order to minimize the dimensions of the floating saddle, its first and second chamfers are located in the same angular plane, and the floating saddle and an additional short ring spring are placed in the housing of the power supply to the vibrator. The housing of the energy carrier is connected to the bushing of the location of the vibrator plunger and the main ring spring by means of a cut. The contact pressure necessary for sealing in the initial position of the valve bushing on the second face of the floating seat is created by a twisted cylindrical spring that presses the valve bushing to the seat through a stepped bushing and split spring ring, which are placed on the cylindrical outer surface of the valve bushing.

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2. Iskovych-Lototskyi R. D., Obertiukh R. R., Polishchuk O. V. (2008) Vykorystannia hidroimpulsnoho pryvoda v obladnanni pererobnykh vyrobnytstv [The use of a hydraulic impulse drive in the equipment of processing plants].: monohrafiia / ‒ Vinnytsia : VNTU, ‒ 116 s [in Ukrainian]. 

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14.  Obertiukh R. R., Slabkyi A.V., Andrukhov S.R., Kudrash V.O. (2019)  Parametrychni odnokaskadni heneratory impulsiv tysku pidvyshchenoi propusknoi zdatnosti [Parametric single-cascade pressure pulse generators of increased bandwidth]. Visnyku mashynobuduvannia ta transportu – №1, 2019. – S. 40 – 48 [in Ukrainian].