Method of locking an impeller bar against a seat

Details Method of locking an impeller bar against a seat Method of locking an impeller bar against a seat

1991-03-29

1992-05-12

Eley, Timothy V.

Metal working

Method of mechanical manufacture

With testing or indicating

295251, B23Q 1700

Patent

active

051115697

ABSTRACT:
The rotor of an impact crusher includes a 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
patent: 4925114 (1990-05-01), Ostergaard

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