Solid material comminution or disintegration – Processes – Miscellaneous
Patent
1981-08-06
1983-08-16
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
Miscellaneous
241 32, 241264, 241286, B02C 102
Patent
active
043986749
ABSTRACT:
A hydraulically actuated jam release system for a jaw type rock crusher wherein a massive, mechanically rigid retracting plate is disposed behind the crusher's stationary jaw to engage the entire width of the jaw to hold the stationary jaw in its operative position. Mechanical locking pins are hydraulically actuated by vertical hydraulic cylinders to mechanically lock the retracting plate in its forward position, and separate horizontal hydraulic retracting cylinders are provided to retract the retracting plate when the mechanical locking pins are disengaged therefrom, and to return the retracting plate to its forward position after the non-crushable material has been released from the crushing chamber of the crusher. The entire hydraulic system for the jam release is hydraulically operated through a series of suitable hydraulic valves preferably located at a central control station. It is an important aspect of the disclosure that once the retracting plate is mechanically locked by the locking pins, the stationary jaw does not require hydraulic pressure.
REFERENCES:
patent: 3511444 (1970-05-01), Vitez
patent: 3918648 (1975-11-01), Anthony
patent: 3976255 (1976-08-01), Edwards
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