Deep lunar soil rotary guide drilling mechanism

Abstract

The invention relates to a deep lunar soil rotary guide drilling mechanism. The mechanism comprises a shell, driving devices, guide blocks, push rods and telescopic blocks which are installed in a drill rod and coaxially arranged with the drill rod, the shell and the drill rod are arranged at an interval, and the driving devices are installed on the shell and located in the interval. The telescopic blocks are driven by the driving devices to be slidably connected to the shell in the direction parallel to the axis of the drill rod. The guide blocks are slidably connected to the drill rod in thedirection perpendicular to the axis of the drill rod, and the two ends of the push rods are hinged to the telescopic blocks and the guide blocks correspondingly. The telescopic blocks slide along theshell to drive the push rods to push out or withdraw the guide blocks from the drill rod. The mechanism can assist a deep lunar soil drilling system to laterally extend out of the guide blocks to complete the guide action when moving forwards in lunar soil, and when the drilling system encounters hard rock or other special conditions and needs to change the drilling direction of a drill bit, a guide module pushes the guide blocks out by a certain distance, so that the front end of the drill bit deviates by a certain angle, and the direction of the drill bit is changed.

Description

technical field [0001] The invention relates to the relevant field of deep lunar soil drilling, in particular to a rotary steerable drilling mechanism for deep lunar soil. Background technique [0002] The lunar regolith distributed in the depth direction records the geological information of the lunar time dimension, providing important evidence for revealing the local geological origin and the evolution history of the entire moon; compared with the surface, the deep lunar regolith is less affected by cosmic rays, etc. The original state of the sample can be preserved to the greatest extent; therefore, deep sampling is of great significance to lunar scientific research. [0003] In the lunar soil / rock drilling mechanism that has been put into use at this stage, neither the drill pipe nor the drill bit carries a guiding system. The geological structure of the deep lunar soil is complex, and the distribution of soil and rock particles is unknown. When encountering hard rock o...

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

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