Title:
VERTICAL MILL
Document Type and Number:
WIPO Patent Application WO/2013/175952
Kind Code:
A1
Abstract:
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.
Inventors:
TAMURA MASATO (JP)
TERUYA CHIGUSA (JP)
TERUYA CHIGUSA (JP)
Application Number:
PCT/JP2013/062738
Publication Date:
November 28, 2013
Filing Date:
April 24, 2013
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
B02C15/04
Foreign References:
| JPH11285649A | 1999-10-19 | |||
| JP2005009567A | 2005-01-13 |
Attorney, Agent or Firm:
MIYOSHI SHOJI (JP)
Shoji Miyoshi (JP)
Shoji Miyoshi (JP)
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