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A gyrating cone-shaped head cooperates with a stationary bowl support
to crush rock or the like admitted into the crusher. The gyrating
action of the head is accomplished by an off-set shaft arrangement
for the head driven by a rotatable eccentric member. Input drive
for the crusher rotatably operates the eccentric member through
an independent coupler for improved gear alignment, operation and
maintenance. The head has gyrating support on a dished bearing surface
of the main frame, and hydrostatic pressure is admitted between
the head and the frame support to minimize wear. Also, a fluid lift
is provided for portions of the drive apparatus to support such
parts and eliminate thrust loading caused by the weight of such
parts on a radial roller bearing, thereby prolonging the useful
life of the bearing. An improved seal is provided between the head
and the main frame and is of a structure to remain intact and to
operate effectively under all normal operating conditions of the
crusher. Fluid operated apparatus is used to provide a pressure
hold-down for the bowl and also fluid operated apparatus is provided
for adjusting the bowl rotatably and for locking the bowl securely.
A rotor for a coarse reduction impact crusher with exchangeable
blow bars including a rotor disk to be driven in rotation with a
plurality of radially facing recesses in the periphery and the bars
locked in the recesses between a supporting element welded in the
recess on the trailing side thereof and a shoe being U-shaped and
locked over a projection on the rotor disk with a pair of clamping
keys securing the shoe with one of the keys being U-shaped, and
the keys being removable axially, and the blow bar having forwardly
and rearwardly extending teeth with inclined outwardly facing surfaces
to lock beneath corresponding surfaces on the supporting element.
An article crusher comprised of a base plate support having an
upstanding member supporting a pivoted lever with a platen carried
thereon adapted to be moved within a cylinder mounted on the support
plate to crush an article or the like positioned therein, with said
cylinder being shaped to facilitate the insertion and removal of
the article.
Lifter for remotely removing the lid from a rock crusher is comprised
of cylindrical support and lifting arms integrally joined normally
to one another, and a tubular sleeve bearing which is attached generally
vertically to the outer wall of the crusher shell a spaced distance
therefrom, and which is configured for slideably and rotatably journaling
the lifting arm. The support arm is attached to the lid thereby
causing the lid to be lifted and rotated away from the crusher shell
to expose the operative elements of the crusher upon respective
lifting and rotation of the lifting arm. A hydraulically actuated
piston cylinder mounted to the crusher frame below the lower end
of the sleeve bearing, in a manner for insertion of its ram therein,
is interconnected to the lifting arm through a thrust bearing for
raising and lowering of the lifting arm and allowing its rotation
in the sleeve bearing.
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