MINE CONCRETE TIE-BAR FOR FRAME SUPPORTS OF SPECIAL PROFILE Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: device is made in form of plate with hollow in elongated portion. It includes working armature. Plate has length, appropriate for given length of overlapped portion of mine. Hollow is made of separate recesses in cross-section, each in form of segment with forming of support zone between adjacent recesses, width of which is appropriate to width of support frame profile. Number N of recesses is determined from expression : N=2+(n-1), where n - required amount of support frames for given length of overlapped length of mine without considering two frames of support, mounted below edge portions of plate and edge portions of plates adjacent to it. Recesses are directed along longitudinal axis of plate. Distance from each end of plate to edge recess matches half width of support frame profile.

EFFECT: higher efficiency.

2 cl, 9 dwg