Impeller bar assembly with adjustable locking mechanism

Details Impeller bar assembly with adjustable locking mechanism Impeller bar assembly with adjustable locking mechanism

1989-11-22

1991-04-02

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Rotary striking member, rotor structure

241294, B02C 1328

Patent

active

050041690

ABSTRACT:
The rotor of an impact crusher includes an locking mechanism for impeller bars which may vary in thickness. The locking mechanism includes a compound wedging mechanism which generates an initial, axial urging force by tightening a bolt at an accessible location on the rotor. The force is translated to a first wedge through a second wedge to urge the first wedge outward into an outward converging gap between a side wall in a disc of the rotor and the impeller bar to seat the bar. The mean width of the first wedge is adjustable to accommodate impeller bars of various thicknesses. A guide track in the rotor and specifically in discs of an "open" rotor locate the second wedge in relationship to the rotor and independently of the width adjustment of the first wedge to maintain a constant point of force application against the first wedge.

REFERENCES:
patent: 2747803 (1956-05-01), Hanse
patent: 3979078 (1976-09-01), Boddeker et al.
patent: 4679740 (1987-07-01), Orphall

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