| 摘要 |
<p>The present invention is provided with: a pulverizing table that is accommodated in a housing and is rotatably driven by a table drive device; a plurality of pressure rollers that apply pressing pressure on to the pulverizing table and pulverize aggregated material; and a plurality of roller pressure units that apply the pressing pressure to the pressure rollers. The roller pressure units have: a pressure cylinder that applies pressure to the pressure roller; a hydraulic circuit connected to the pressure cylinder; and a damping device (28) provided in the hydraulic circuit. The damping device has a first orifice (34), which has a first orifice hole (36) and a plurality of relief holes (37), and a second orifice (35) that is provided so as to overlap the first orifice and which closes the relief holes. The second orifice is a deformable plate, and the plate deforms during an increase in hydraulic pressure, pulling away from the first orifice and opening the relief holes.</p> |
