Abstract
The authors report and discuss the experimental results on an air drill hammer with an elastic valve installed in the backstroke exhaust line for mechanical closing. It is approved that such air hammer is capable to ensure the wanted blow capacity at the fixed blow energy by varying blow frequency through adjustment of cross section choke coupling the backstroke and front stoke chambers of the hammer. With the larger cross section of the choke coupling, the maximum blow frequency is achieved and remains the same later on.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Nestle, H., Bautechnik—Fachkunde Bau, Verlag Europa-Lehrmittel, Haan-Gruiten, 2001.
Smolyanitsky, B.N., Tishchenko, I.V., Chervov, V.V., et al., Sources for Productivity Gain in Vibro-Impact Driving of Steel Elements in Soil in Special Construction Technologies, J. Min. Sci., 2008, vol. 44, no. 5, pp. 490–496.
Chervov, V.V., Tishchenko. I.V., and Smolyanitsky, B.N., Effect of Blow Frequency and Additional Static Force on the Vibro-Percussion Pipe Penetration Rate in Soil, J. Min. Sci., 2011, vol. 47, no. 1, pp. 85–92.
Tupitsyn, K.K., K issledovaniyu mashin udarnogo deistviya s pnevmaticheskimi pul’satorami (Testing of Machines with Air-Driven Pulsators), Novosibirsk: IGD SORAN, Preprint, 1980.
Lipin, A.A., Promising Pneumatic Punchers for Borehole Drilling, J. Min. Sci., 2005, vol. 41, no. 2, pp. 157–161.
Smolyanitsky, B.N. and Chervov, V.V., Enhancement of Energy-Carrier Performance in Air Hammers in Underground Construction, J. Min. Sci., 2014, vol. 50, no. 5, pp. 918–928.
Tishchenko, I.V. and Chervov, V.V., Influence of Energy Parameters of Shock Pulse Generator on the Pipe Penetration Velocity in Soil, J. Min. Sci., 2014, vol. 50, No. 3, pp. 491–500.
Chervov, V.V., Impact Energy of Pneumatic Hammer with Elastic Valve in Back-Stroke Chamber, J. Min. Sci., 2004, vol. 40, no. 1, pp. 74–83.
Chervov, V.V., Smolyanitsky, B.N., Trubitsyn, V.V., Chervov, A.V., and Tishchenko, I.V., RF patent no. 2462575, Byull. Izobret., 2012, no.27.
Sudnishnikov, B.V., Esin, N.N., and Tupitsyn, K.K., Issledovanie i konstruirovanie pnevmaticheskikh mashin udarnogo deistviya (Analysis and Design of Pneumatic Percussive Machines), Novosibirsk: Nauka, 1985.
Gurkov, K.S., Klimashko, V.V., Kostylev, A.D., Plavskikh, V.D., Rusin, E.P., Smolyanitsky, B.N., Tupitsyn, K.K., and Chepurnoi, N.P., Pnevmoproboiniki (Air Rock Hammers), Novosibirsk: IGD SORAN, 1990.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.V. Chervov, B.N. Smolyanitsky, I.V. Tishchenko, 2016, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2016, No. 3, pp. 75–79.
Rights and permissions
About this article
Cite this article
Chervov, V.V., Smolyanitsky, B.N. & Tishchenko, I.V. Estimate of blow frequency range for an air drill hammer with a ring-shaped elastic valve in the backstroke exhaust line. J Min Sci 52, 497–501 (2016). https://doi.org/10.1134/S1062739116030718
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1062739116030718