Core breaking mechanism

Abstract

The invention relates to a rock core lifting mechanism, which includes an inner tube, a retaining ring seat, a retaining ring and a retaining ring; the retaining ring seat and the inner pipe are connected through threads, and the retaining spring is tightly attached to the retaining ring seat by its own elastic tension Inside, the retaining ring is located in the radial groove of the spring seat, which can prevent the spring from withdrawing backward. A groove is provided on the inner wall of the circlip, and tapers are respectively provided at the joints of the circlip and the circlip seat. The present invention is simple, compact and reasonable in structure; it can reliably realize a lifting function of the inner pipe when salvaging rock cores during drilling operations. Compared with other similar mechanisms, it is safe, reliable, easy to operate, and very convenient to replace wearing parts: The spring is built in the spring seat and connected with the inner tube. When tightened by the tension, the core and the formation can be automatically broken, so that the inner tube can extract the core sampling function. It is suitable for a variety of core drilling tool series The promotion and application on the Internet, and can adapt to very harsh working environments.

Description

technical field [0001] The invention relates to a rock core breaking mechanism, in particular to a device for directly picking out rock cores from the drill pipe without extracting the drill pipe during the drilling construction process, belonging to the field of drilling tools for construction machinery (drilling rigs). Background technique [0002] During the core drilling construction process, when the drill pipe inner tube core is filled in place, it is necessary to extract the core to the working face through a certain method. The traditional method is to lift the whole set of drill pipe to the working face and then take out the core. This method is not only time-consuming and labor-intensive, but also the quality of the cores obtained is not good, which affects the accuracy of sampling analysis. Contents of the invention [0003] The object of the present invention is to overcome the above disadvantages, thereby providing a rock core breaking mechanism, the mechanis...

AI Technical Summary

Problems solved by technology

[0002] During the core drilling construction process, when the drill pipe inner tube core is filled in place, it is necessary to extract the core to the working face through a certain method. The traditional method is to lift the whole set of drill pipe to the working face and then take out the core. This method is not only time-consuming and labor-intensive, but also the quality of the cores obtained is not good, which affects the accuracy of sampling analysis.

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