Crushing device

A roller crusher comprising:

• a frame;
• first and second crusher rolls arranged axially in parallel with each other, said first crusher roll being supported in first bearing housings which are arranged in the frame, said second crusher roll being supported in second bearing housings which are configured to be movable;
• a hydraulic system configured to adjust the position of the second crusher roll and a crushing pressure between the first and second crusher rolls;
• and
• a deflection distributor, wherein said deflection distributor comprises:
• a deflection distributing shaft,
• mounts for attaching said deflection distributing shaft at said frame of said roller crusher, and
• thrust rods each having first and second ends, wherein the first end of each of said thrust rods is attached to said deflection distributing shaft via a lever, wherein the second end of each of said thrust rods is attached to one of the second movable bearing housings of said second crusher roll,
• wherein the deflection distributing shaft, the mounts, the levers and the thrust rods form individual sub parts of, and together define, a mechanical connection between the movable bearing housings, and
• a preload arrangement is arranged to induce a bias into the thrust rods or into the deflection distributing shaft such that the individual sub parts are at all times mutually biased in relation to each other to reduce shock loads to the mechanical connection during operation of the roller crusher,
• wherein the deflection distributing shaft is hollow and has a wall thickness of 10 to 200 mm.