Questions of pneumatic perforators dynamics
R. К. Prilepskij, E. S. Sаvеnко, S. V. Krakhin, R. I. Rybalko
Donbas National Academy of Civil Engineering and Architecture
Annotation: In the article the results of pneumatic perforators dynamics researches have been stated on the basis of differential equations system of variable mass body thermodynamic and the dynamic piston. The detailed analysis shows that the changeability of thermodynamic body mass takes place in the working process of pneumatic perforator and undoubted by influences on the character process, which determines the initial equalization system choice. The given equations systems do not have the general solution, but they have private of solution, being of interest in theoretical research of working process. The method of pneumatic perforators comparison has been worked out on the principle of similarity (the criteria of similarity are obtained), allowing to spread the single researches results on all types of the size row. At present calculation the methods of air distributed devices for perforators have been worked out not in enough detail, and the static’s questions have mainly been considered, that does not allow to analyze workings processes taking into account the dynamics and thermodynamics of air distributed devices, and hence from the point of the similarity theory. With the purpose of the method elaborations, which allows calculating of the supposed graph of valve motion the differential equations have been suggested, characterizing the working process of the most widespread types of air distributive devices of pneumonic hammers, and indicated the methods of their solution.
Keywords: perforator, piston, dynamics, equalization, criterion, valve, thermodynamics, pressure, mass.
Pages: 5-14.
Link for citation: Prilepskij, R. К.; Sаvеnко, E. S.; Krakhin, S. V. [et al.]. Questions of pneumatic perforators dynamics. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2009. – Vol. 5, N 1. – Р. 5-14. – URL: https://donnasa.ru/publish_house/journals/spgs/2009-1/01_prilepskij_savenko_krahin_rybalko.pdf (date of access: 19.09.2024). (in Russian)
Vol. 5, N 1 (2009)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture