Single swing jaw crushing apparatus with an unobstructed feed op

Details Single swing jaw crushing apparatus with an unobstructed feed op Single swing jaw crushing apparatus with an unobstructed feed op

1989-04-17

1991-02-05

Gorski, Joseph M.

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

241265, 241287, B02C 104

Patent

active

049897977

ABSTRACT:
A jaw-type rock crusher has a stationary jaw, a cantilevered swing jaw driven by a toggle drive system, and a top feed opening above the crushing chamber formed between the two jaws. Two lateral hinge supports having an elevated horizontal hinge axis which lies in a plane generally bisecting the crushing chamber hingedly engage lateral support arms forming the upper hinge section of the swing jaw. In accordance with the invention, the lateral hinge supports and the swing jaw's upper support arms straddle the frame of the crusher and its top feed opening to allow the top feed opening to extend behind the swing jaw's hinge axis thereby permitting larger rock to be fed into the crusher and permitting easier access into the crusher for the purpose of dislodging or breaking up over-sized rock. A shock-absorbing back wall positioned behind the hinge axis near the top of the crusher prevents the impact forces of rock fed into the feed opening at high velocities from being fully absorbed by the swing jaw's bearings.
In the preferred embodiment, the swing jaw is fabricated in three sections, namely, an upper hinge section formed by the two lateral support arms of the jaw, a lower jaw section, and an elongated joining member for attaching the upper and lower jaw sections at a desired and precise adjusted angle which permits the lower end of the jaw to be properly aligned with their crusher's toggle drive system.

REFERENCES:
patent: 2326215 (1943-08-01), Gruender
patent: 4244532 (1981-01-01), Kroening et al.

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