LOCK OF YIELDING NODE OF METAL FRAME YIELDING FIXATION MADE OF MINE SPECIAL PROFILES

摘要

The invention relates to mining, in particular to fixing devices for sliding at overload joint of arch elements of metal yielding supports made of mine special profiles. Yielding lock has slat with openings and fixation cramp in ?-like shape with threaded ends that go through openings of slat, inner and outer special profiles placed between those with lap, nuts and amplifiers-stabilizers formed ofsupport cramps with elongated shelves installed between the slat and the flanges of the inner special profile, and thrust elements that are installed between the shelves of support cramps. To improve springy-deformation properties of amplifier-stabilizer the thrust elements are arranged as cylindrical panels with curvature directed to the outer side of the lock and installed to shaped slots formed in shelves of support cramps.