DEVICE FOR ULTRASONIC DRILLING OF EXTRATERRESTRIAL OBJECTS Russian patent published in 2020 - IPC B64G1/10 E21C51/00 

FIELD: sampling; soil drilling.

SUBSTANCE: invention relates, in particular, to devices for drilling and sampling planets and other celestial bodies with low attraction force. Proposed device comprises working tool (5) with concentrator (6) with resonant length. One of end faces of concentrator (6) is connected to concentrating pad of piezoelectric oscillating system (2). Rotation unit (3) is connected to housing (1) of the oscillating system through elastic element (8). Unit for creation of low-frequency vibrations includes resonant spring (9) and free mass (4). When voltage of ultrasonic frequency (~21 kHz) is applied to piezoelectric elements of system (2), concentrator (6), as well as system, starts oscillating at the same frequency. Amplitude of its oscillations towards tool (5) increases. When interacting with concentrator (6), free mass (4) pressed to it by spring (9) starts to perform low-frequency oscillations, impacting the whole structure. To this, tool (5) rotation is added.

EFFECT: technical result consists in increase of speed and depth of drilling, with removal of products of soil destruction along outer walls of working tool.

1 cl, 1 tbl, 1 dwg