| 摘要 |
An apparatus for use in resonance enhanced rotary drilling includes one or both of: a vibration isolation unit and a vibration transmission unit. The vibration isolation unit and/or the vibration transmission unit may comprise a spring system comprising two or more frusto-conical springs arranged in series for use in a high torsion environment. Also claimed is an apparatus for testing a resonance enhanced rotary drilling model where the apparatus include a vibration isolation unit and a vibrations transmission unit. |
