Geotechnical Drilling Machine with Pivotable Carousel Barrel
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Solution Overview
Problem
Geotechnical drilling machines using concentric tubes are often bulky due to the need for powerful motors and complex handling mechanisms to manage and rotate multiple tubes, which complicates deep drilling operations.
Innovation Solution
The implementation of a rotary barrel with coaxial, pivotable carousels allows independent rotation of inner and outer tubes, enabling the use of weaker motors and facilitating radial extraction and introduction of tubes, thereby reducing the machine's size and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single rotating barrel stores both inner and outer tubes, then tube storage is achieved, but the machine becomes bulky and requires powerful motors to rotate all tubes simultaneously
Solution Approach 1:
The patent divides the single rotating barrel into two separate carousels: an inner carousel for storing inner tubes and an outer carousel for storing outer tubes. Each carousel can rotate independently, allowing selective rotation of only the required tube series. This segmentation eliminates the need to rotate all tubes simultaneously, reducing motor power requirements and simplifying the handling mechanism.
Solution Approach 2:
The patent introduces a radial dimension for tube extraction and introduction. Tubes can be extracted or introduced radially from the carousels, adding a new dimension to the loading/unloading process. This radial access mechanism simplifies the handling system compared to vertical extraction, reducing the overall machine size and complexity.
2Ease of operation
If a handling device moves vertically to extract tubes from the barrel, then tube extraction is achieved, but the machine requires extensive vertical space and guiding mechanisms
Solution Approach 1:
The patent changes the extraction direction from vertical to radial. The handling device now moves radially outward from the carousels to extract tubes, rather than moving vertically. This dimensional change eliminates the need for extensive vertical guiding mechanisms and reduces the overall vertical space requirement of the machine.
3Ease of operation
If all tubes rotate simultaneously when selecting one tube, then tube selection is achieved, but unnecessary tubes are rotated requiring powerful motors
Solution Approach 1:
The patent segments the tube rotation function by creating two independent carousels. When a tube needs to be selected, only the corresponding carousel (inner or outer) rotates to bring the desired tube into position. The other carousel remains stationary. This selective rotation dramatically reduces the power requirement compared to rotating all tubes simultaneously.
Data Source
Figure 1
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Figure 4A~4B
AI summary
The invention relates to a geotechnical drilling machine (12) comprising: a drill head (24); means for moving the drill head longitudinally along a drilling axis; a drum (30) rotating about a second axis, said drum comprising a plurality of first housings for receiving first tubes (14) and a plurality of second housings for receiving second tubes, connection means for connecting the drill head at least with one of the second tubes contained in the drum; The invention is characterized in that the drum (30) comprises a first carousel and at least one second carousel, the first and second carousels being coaxial and arranged to pivot relative to each other about the second axis.