US 12,251,707 B2
Method for monitoring physical conditions of a roller crusher, and a refitting kit for a roller crusher
Vadim Reznitchenko, Mechanicsburg, PA (US)
Assigned to Metso USA Inc., Brookfield, WI (US)
Filed by Metso Outotec USA Inc., Brookfield, WI (US)
Filed on Oct. 2, 2023, as Appl. No. 18/479,151.
Application 18/479,151 is a division of application No. 17/345,073, filed on Jun. 11, 2021, granted, now 11,801,516.
Prior Publication US 2024/0024892 A1, Jan. 25, 2024
Int. Cl. B02C 25/00 (2006.01); B02C 4/02 (2006.01); B02C 4/28 (2006.01); B02C 4/32 (2006.01)
CPC B02C 25/00 (2013.01) [B02C 4/02 (2013.01); B02C 4/28 (2013.01); B02C 4/32 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for monitoring the physical condition of a deflection distributor of a roller crusher, wherein said deflection distributor includes a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of said deflection distributing shaft at a first and a second side of a frame of said roller crusher, wherein a first end of each of said thrust rods is attached to said deflection distributing shaft via a lever, wherein a second end of each of said thrust rods is attached to a movable bearing housing of said roller crusher, the method comprising:
providing at least one load sensor configured to detect material load in the deflection distributor;
providing at least one positioning sensor configured to detect a parameter pertaining to a distance between a first point and a second point of the roller crusher, wherein at least the first point is defined on the deflection distributor or on one of the movable bearing housings;
displacing the movable bearing housings with respect to each other such that the deflection distributor is moved from a first identified rigid state at which joint clearance does not affect the deflection distributor, via an intermediate state at which joint clearance affect the deflection distributor, to a second identified rigid state at which joint clearance does not affect the deflection distributor; and
determining, based on output from the at least one positioning sensor obtained at the first and the second rigid states, respectively, a displacement distance indicative of a degree of joint clearance in the deflection distributor.