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首页> 外文期刊>Shock and vibration >A Piezoelectric-Driven Rock-Drilling Device for Extraterrestrial Subsurface Exploration
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A Piezoelectric-Driven Rock-Drilling Device for Extraterrestrial Subsurface Exploration

机译：压电驱动的岩石钻探设备，用于地球外地下勘探

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The rocks on extraterrestrial objects contain plenty of original geological and biological information. Drilling and sampling are an essential task in lunar exploration or future explorations of other planets like mars. Due to the limitation of payloads, energies, and drill pressure, the investigation of a lightweight and low-powered rock-drilling device is crucial for explorations of distant celestial bodies. The ultrasonic drill driven by piezoelectric ceramics is a new drilling device that can adapt to the arduous space rock-drilling tasks in weak gravitational fields. An ultrasonic drill suitable for mounting on a planetary rover’s robotic arm is developed. The ultrasonic transducer’s energy conversion from electric energy to acoustic energy and the energy transmission from the horn’s high-frequency vibration to the drill stem’s low-frequency impact motion are analyzed to guide the design of the drill. To deeply understand the percussive drilling mechanism under high-speed impact, the interaction between the drill stem and the rock is simulated using LS-DYNA software. Drilling experiments on rocks with different hardness grades are conducted. The experiment results illustrate that the ultrasonic drill can penetrate into the hard rocks only taking a force of 6 N and a power consumption of 15 W. The study of ultrasonic drill will provide a reference method for sample collection of extraterrestrial rocks.
机译：地外物体上的岩石包含大量原始的地质和生物学信息。钻探和采样是月球探索或其他诸如火星等行星未来探索的基本任务。由于有效载荷，能量和钻探压力的限制，研究轻巧和低功率的凿岩设备对于探索遥远的天体至关重要。由压电陶瓷驱动的超声波钻是一种新型的钻探设备，可以适应弱重力场中艰巨的太空岩石钻探任务。开发了一种适用于安装在行星漫游车机器人手臂上的超声波钻。分析了超声换能器从电能到声能的能量转换以及从焊头的高频振动到钻杆的低频冲击运动的能量传递，以指导钻头的设计。为了深入了解高速冲击下的冲击钻进机理，使用LS-DYNA软件模拟了钻杆与岩石之间的相互作用。在不同硬度等级的岩石上进行了钻孔实验。实验结果表明，超声钻仅需施加6 N的力和15 W的功率即可穿透硬岩。超声钻的研究将为外星岩样品的采集提供参考方法。

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