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Numerical investigation of performance of hydraulic percussion drifter

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Abstract

Drilling machines using the top hammer drilling method incorporate a drilling mechanism whereby the torque and percussive force generated by the hydraulic drifter are transferred to the rock surface through a rod and drill bit. To date, mainstream studies of the hydraulic drifter addressed the behavior of the elastic waves produced by the impact and the drilling characteristics related to rock properties. Meanwhile, studies of design sensitivity analysis and percussion performance improvement for the development of a high-efficiency hydraulic drifter have been insufficient. In this study, to develop a high-efficiency hydraulic drifter, the validity of a model was verified by comparing the test results with a previously constructed analysis model. In addition, using the model, the supply pressure and inlet flow rate, stroke regulator opening, and striking piston’s acting area and mass were selected as the design parameters affecting the percussion performance; through the impact frequency and impact energy, the percussion performance was analyzed. As a result, design values that improve the percussion performance were derived.

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Authors and Affiliations

  1. Construction Equipment R&D Group, Korea Institute of Industrial Technology, 320, Techno Sunhwan-ro, Yuga-myeon, Dalseong-gun, Daegu, 42990, South Korea

    Joo-young Oh, Chang-heon Song & Dae-Ji Kim

  2. Convergence Components and Agricultural Machinery Application Group, Korea Institute of Industrial Technology, 119, Jipyeongseonsandan 3-gil, Baeksan-myeon, Gimje-si, Jeollabuk-do, 54325, South Korea

    Jeong-gil Kim

  3. Technology Convergence R&D Group, Korea Institute of Industrial Technology, 320, Techno Sunhwan-ro, Yuga-myeon, Dalseong-gun, Deagu, 42990, South Korea

    Jin-young Park & Jung-woo Cho

Authors
  1. Joo-young Oh
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  2. Chang-heon Song
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  3. Dae-Ji Kim
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  4. Jeong-gil Kim
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  5. Jin-young Park
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  6. Jung-woo Cho
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Correspondence to Joo-young Oh.

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Oh, Jy., Song, Ch., Kim, DJ. et al. Numerical investigation of performance of hydraulic percussion drifter. Int. J. Precis. Eng. Manuf. 17, 879–885 (2016). https://doi.org/10.1007/s12541-016-0107-8

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  • DOI: https://doi.org/10.1007/s12541-016-0107-8

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