Disc crusher

A disc crusher comprising a case with a cover in which a disc having a top surface is seated, and a first shaft mounted in a bearing body and disposed at an angle with respect to the disc surface, on which shaft there is mounted a cone, the generatrix of the cone being parallel to the top surface of the disc, while the bearing body together with the shaft and the cone is displaceable axially forming thus a crushing gap between the generatrix of the cone and the top surface of the disc,

• the bearing body being provided with a flange, on which flange there are arranged a plurality of shock absorbing springs;
• and
• a joining body having upper and lower flanges, the flange of the bearing body being joined to the upper flange of the joining body, by means of stud bolts passing freely through holes in the flange of the bearing body, the upper flange, and said springs, and said joining body being joined by means of its lower flange to the cover of the case;
• said joining body comprising a top ring with said upper flange and a bottom ring with said lower flange, said top and bottom rings being provided on their external surfaces with threads, the threads of the top ring being pitched opposite to the threads of the bottom ring so that the axial displacement of the bearing body, the shaft and the cone which forms the crushing gap is effected twice as fast as were said threads not oppositely pitched.