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Principles of Designing Air-Driven Hammer with Decoupled Piston for Driving Rods in Soil

  • Science of Mining Machines
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Journal of Mining Science Aims and scope

Abstract

Improvability of air-driven pulse-generating mechanisms for operation in mineral mining and construction is discussed. An impact system with two mobile masses incorporated in a common housing is proposed for vibro-percussive driving of structural iron into elastoplastic soil. Experimental prototype of the air hammer with decoupled piston based on the air distribution circuit with elastic valve in the back stroke chamber of the piston is described. The test data of operation cycle of the piston in case of different variants of settings are presented. The possibility to exert influence on the nature and frequency of impacts is demonstrated.

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Acknowledgments

The authors wish to express their thanks to Leading Engineer A.V. Chervov or his huge contribution to development of the workable R&D model mechanism, as well as to V.V. Trubitsyn, V. V. Moskalenko and S.N. Trifonov for the active participation in test preparation and experimentation.

Funding

This study was implemented within the Scientific Research Foundation Project: Engineering of Energy-Efficient Percussive and Vibrating Devices Mineral Mining and Processing and Underground Space Development, State Registration No. AAAA-A17-117122090003-2.

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Authors and Affiliations

  1. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091, Russia

    I. V. Tishchenko & V. V. Chervov

Authors
  1. I. V. Tishchenko
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  2. V. V. Chervov
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Correspondence to V. V. Chervov.

Additional information

Original Russian Text © I.V. Tishchenko, V.V. Chervov, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2018, No. 6, pp. 75–86.

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Tishchenko, I.V., Chervov, V.V. Principles of Designing Air-Driven Hammer with Decoupled Piston for Driving Rods in Soil. J Min Sci 54, 949–958 (2018). https://doi.org/10.1134/S1062739118065096

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  • DOI: https://doi.org/10.1134/S1062739118065096

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