Patent ID: 7832668

Claim:
A twin-rotor beating bar crusher for comminuting mineral materials, the twin-rotor beating bar crusher comprising: a first rotor; a second rotor, said first and second rotor being arranged horizontally in parallel to one another; a hydraulic cylinder; beating bars arranged uniformly distributed over a circumference of each of said first rotor and said second rotor fastened rigidly thereto and extend over an entire length or over nearly an entire length of a crushing space of the respective said first rotor and said second rotor, said first rotor and said second rotor being arranged next to each other at a same level or at nearly the same level and said first rotor and said second rotor having directions of rotation that are opposite each other and are directed inwardly when viewed from a top; and an anvil strip extending between said first rotor and said second rotor under a gap formed by said first rotor and said second rotor and in parallel to rotor axes of said first rotor and said second rotor, said anvil being connected to said hydraulic cylinder, said anvil strip being hydraulically lowered in a vertical direction via said hydraulic cylinder for overload protection of said anvil strip.