A Rotary Steerable Drilling Mechanism for Deep Lunar Soil

Abstract

The invention relates to a rotary steerable drilling mechanism for deep lunar soil, which includes a casing installed in the drill rod and coaxially arranged with the drill rod, a driving device, a guide block, a push rod and a telescopic block, and the casing and the drill rod are arranged at intervals , the driving device is installed on the casing and located in the interval, the telescopic block is driven by the driving device and is slidably connected to the casing in a direction parallel to the axis of the drill rod; the guide block is slidably connected in a direction perpendicular to the axis of the drill rod On the drill rod, the two ends of the push rod are respectively hinged with the telescopic block and the guide block; the telescopic block slides along the casing to drive the push rod to push out or retract the guide block from the drill rod. The invention can assist the deep lunar soil drilling system to extend the guide block laterally to complete the guiding action when it moves forward inside the lunar soil, and when the drilling system encounters hard rock or other special circumstances and needs to change the drilling direction of the drill The module pushes the guide block out for a certain distance, so that the front end of the drill bit is offset by a certain angle, and then the direction of the drill bit is changed.

Description

Technical field [0001] The present invention relates to the area of ​​deep moon drilling, and in particular to a deep moon rotary guide drilling mechanism. Background technique [0002] The moon distributed in the depth direction records geological information on the moon time dimension, providing important evidence for local geological causes and the entire moon evolution history; relative surface, the deep cosmic rays are less affected by cosmic rays. It is important to maximize the original state of the sample; therefore, deep sampling is important to the meaning of moon science research. [0003] In the moon / rock drill mechanism that has been put into use at this stage, the drill rod and the drill bit do not carry the guide system, the deep moon geological structure is complex, soil, rock particle distribution is unknown, and the hard rock and special conditions are encountered. Require laterally to introduce the guiding block, so that the drill bit changes the direction of...

AI Technical Summary

Problems solved by technology

In this scheme, the control of the motor is relatively complicated, and because the pipe fittings connected to the tail end of the drill bit system are prone to torsion and deformation during deep drilling, the use of controlling the rotation angle of the stepping motor to realize the rotation direction cannot guarantee the accuracy of the steering angle

Images