| 摘要 |
FIELD: mining engineering. ^ SUBSTANCE: invention relates to drilling of wells by rotadrills, particularly to articulations of drilling tool. Proposed coupling contains drive member, implemented in the form of truncated from both sides sphere with tapered threaded openings endwise, and driven member, implemented detachable with internal spherical surfaces, contacting to spherical surface of drive member. Additionally on the outside of drive member and indie the driven member there are implemented diametrically opposite adjoining closed segmented grooves, matching to each other. In adjoining grooves there are located balls, axis of which matches to differentiation line of spherical surface of driving and driven elements. ^ EFFECT: increasing of manufacturing capability of coupling-hinges of rods, ensured by increasing of azimuth error of drive part of rod relative to driven. ^ 6 dwg |
