Mining roof support

A mining roof support comprising:

• a canopy,
• a bottom sprag, and
• a stabilizing-guiding system for the roof support, said stabilizing-guiding system comprising:
• a pair of hydraulic legs connected to said canopy and to said bottom sprag,
• two articulated quadrilateral linkages respectively connected to said canopy and said bottom sprag;
• a spacer element connecting said two quadrilateral linkages together;
• said quadrilateral linkages including two front and two rear links;
• two coordinating links pivotably connected at first ends thereof, respectively to said canopy and said sprag and at second ends thereof to one another;
• a connecting element at said second ends of the coordinating links pivotably connecting said second ends together,
• a longitudinal guideway for said connecting element, said guideway having a main axis parallel to said bottom sprag,
• said longitudinal guideway being fixed to said spacer element, said front links being pivotably connected at respective first ends thereof respectively to said canopy and said sprag and at second ends thereof to one another and to said spacer element, said front links and said coordinating links forming an acute angle between one another,
• said hydraulic legs being connected to said bottom sprag for pivotable movement about an axis located on one side of a vertical plane, bounding a walkway space on the bottom sprag, said stabilizing guiding system also being located on said one side of said vertical plane.