Abstrict A device for mounting the breaking cone of an inertia crusher having
a crushing bowl and a breaking cone arranged within the crushing
bowl comprises a shell, the top portion of which contains a spherical
support provided with a central cylindrical hole to receive a shaft
of the breaking cone, and in the bottom portion thereof, there is
arranged a ball spindle interconnected with a bush carrying an out-of-balance
weight on the outer surface thereof intended for placing the breaking
cone shaft therewithin. The bush is of such a length that its upper
end is disposed in the central cylindrical hole and enters it so
far that the bush rests, when tilted, upon the wall of the central
cylindrical hole. Also, an annular projection in the bottom portion
of the shell serves as a support for the out-of-balance weight when
the bush rests upon the wall of the cylindrical hole.
Claims We claim:
1. An inertia cone crusher having a crushing bowl and a breaking
cone provided with a shaft and fitted within the crushing bowl to
provide a cavity therebetween for crushing a material, comprising:
a shell;
a spherical support having a central cylindrical hole receives
said shaft of said breaking cone and is mounted in the top portion
of said shell;
a ball spindle mounted in the bottom portion of said shell;
a bush having a bore is interconnected with said ball spindle and
said bore is intended to receive said shaft of said breaking cone,
the bush is of such a length that its upper end is sufficiently
disposed within the central cylindrical hole of said spherical support
so that said bush rests, when tilted during removal of said breaking
cone, upon the inner wall of the central cylindrical hole of said
spherical support;
an out-of-balance weight mounted on the outer surfaces of said
bush; and
an annular projection in the bottom portion of said shell serving
as a support for said out-of-balance weight when said bush rests
upon the wall of the central cylindrical hole of said spherical
support.
2. An inertia cone crusher as claimed in claim 1 wherein said
annular projection is in the form of a taper washer with its inner
tapered surface facing said out-of-balance weight.
3. An inertia cone crusher as claimed in claim 1 including a carrier
ring which serves as part of said bush, and said carrier ring resting
atop said annular projection.
4. An inertia cone crusher as claimed in claim 1 wherein said
annular projections forms an integral part of the bottom portion
of said shell.
Description FIELD OF THE INVENTION
The present invention relates to inertia cone crushers, and more
particularly to devices for mounting the breaking cone of an inertia
crusher.
The present invention can be most advantageously used in the chemical
and ore-dressing industries.
BACKGROUND OF THE INVENTION
Presently, it is known to use inertia cone crushers comprising
a crushing bowl and a breaking cone accommodated therewithin to
provide an annular breaking cavity. The breaking cone is mounted
on a spherical support secured, as is the crushing bowl, to the
crusher base. The breaking cone has its shaft seated in a bearing
bush provided with an out-of-balance weight on the outer surface
thereof. The bush is interconnected with a ball spindle arranged
in the bottom portion of the crusher.
In the course of operation, the armour clothing the breaking cone
becomes wornout and, therefore, must be repaired or be replaced.
Due to design features of the crusher, it is necessary in order
to replace the armour of the breaking cone, to remove the latter
from the crusher. However, the mounting of the breaking cone into
the crusher involves difficulties associated with stopping the bush
in a position near to the vertical.
Known in the prior art is a device for mounting the the breaking
cone of an inertia crusher having a crushing bowl which accommodates
a breaking cone (cf. USSR Inventor's Certificate No. 497049). The
device comprises a shell accommodating a spherical support mounted
in the top portion thereof and it is provided with a central hole
to receive a breaking cone shaft passing therethrough. In the bottom
portion of the shell, there is mounted a ball spindle interconnected
with a bush carrying an out-of-balance weight outside thereof and
intended for placing the breaking cone shaft therewithin. In said
design, the ball spindle is both a drive and a support of the bush.
To mount the breaking cone, one must bring the bush to a vertical
position with the aid of a crane and stop it with respect to the
crusher shell with three ropes located at 120.degree. to each other
and fastened with their loose ends to the shell. The cone is lowered
by the crane to let its shaft just enter the crater of the bush.
The ropes are then removed from the crusher and the cone is further
lowered down to rest upon the spherical support.
However, the mounting of the breaking cone in the device in question,
is a time-consuming process which requires subsidiary equipment.
There is also known a device for mounting the breaking cone of
an inertia crusher having a crushing bowl (cf. USSR Inventor's Certificate
No. 419240). The device comprises a shell, in the top portion of
which there is mounted a spherical support provided with a central
hole to receive a breaking cone shaft passing therethrough, and
in the bottom portion thereof, there is mounted a ball spindle interconnected
with a bush carrying an out-of-balance weight outside thereof intended
for placing the breaking cone shaft therewithin.
As distinguished from the device described hereinabove, wherein
the ball spindle is both a drive and a support of the bush provided
with an out-of-balance weight, in the construction under consideration
the spindle operates as but a drive, and a rod with a thrust bearing
serves as a support. The rod is disposed inside the breaking cone
shaft and is rigidly mounted in its top.
To mount the breaking cone, the rod is stopped by three stops in
the vertical position and the cone is lowered by means of a crane
until the top end of the rod enters the opening of the cone shaft.
The rod therewith functions as a guide for the shaft inserted in
the opening of the bush. The stops are then removed and the cone
is lowered down to rest upon the spherical support. The entire cone
shaft therewith enters the bush. With screwing a nut on a shank
of the rod, the bush with the out-of-balance weight is raised to
the operating position.
In said crusher, the mounting of the breaking cone is less labor-consuming
as compared with the prior art devices described hereinabove, since
there is no arduous operation of slinging the bush, but a much easier
operation of stopping the rod.
However, this construction, too, features lost time since prior
to dismantling of the breaking cone, it is necessary to remove a
protective head from it and also a nut securing the rod and to perform
the opposite sequence when mounting the cone.
Also known in the art is an inertia cone crusher having a crushing
bowl which accommodates a breaking cone (U.S. Pat. No. 4073446).
The construction is known to comprise a shell, in the top portion
of which there is mounted a spherical support provided with a central
hole to receive a breaking cone shaft passing therethrough, and
in the bottom portion there is mounted a ball spindle interconnected
with a bush carrying an out-of-balance weight on the outer surface
thereof intended for placing the breaking cone shaft therewithin.
In this crusher, a lateral port of the shell casing is opened prior
to dismantling the breaking cone and a cantilever having two support
guides for the out-of-balance weight is fastened to the walls of
the port. Upon removal of the breaking cone from the crusher, the
bush with the out-of-balance weight retains its initial position
on the support guides, therefore the subsequent mounting of the
cone does not present any difficulties.
However, in this crusher, too, the additional operation of mounting
and dismantling the supporting cantilever is retained, which also
results in additional time for the mounting of the cone. Moreover,
the assembling works remain labor-consuming.
SUMMARY OF THE INVENTION
It is an object of the present invention to simplify the assembling
of a crusher when mounting the breaking cone.
Another object of the present invention is to exclude lost time
when mounting the breaking cone.
Still another object of the present invention is to cut the labor-consumption
of the assembling works when mounting the breaking cone.
With these and other objects in view, there is provided a device
for mounting the breaking cone of an inertia crusher having a crushing
bowl which accommodates a breaking cone. The device comprises a
shell having a spherical support mounted in the top portion thereof
and the support is provided with a central cylindrical hole to receive
a breaking cone shaft which is passed therethrough in the bottom
portion of the shell, there is arranged a ball spindle interconnected
with a bush carrying an out-of-balance weight on the outer surface
thereof intended for placing the breaking cone shaft therewithin.
The bush is of such a length that its upper end is disposed in the
central cylindrical hole of the spherical support and enters it
so far that the bush rests, when tilted, upon the wall of the central
cylindrical hole. An annular projection is provided in the bottom
portion of the shell and serves as a support for the out-of-balance
weight when the bush rests upon the wall of the cylindrical hole.
The advantage of the proposed device resides in the feature that
an easy mounting of the cone in the crusher is possible without
the need for subsidiary mechanisms, since stopping the bush with
the out-of-balance weight relative to the shell in a position suitable
to assemble the shell is obtainable.
It is desirable that the annular projection be shaped as a taper
washer facing with its inner tapered surface the out-of-balance
weight.
Such an embodiment of the annular projection ensures minimizing,
when tilting the bush, its minimal vertical lowering at the instant
the bush pivotes about the two hinges of the ball spindle, since,
in such a situation, there is no possibility for the lower end of
the out-of-balance weight to slip from the projection.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be explained by the detailed description
of the preferred embodiment with reference to the accompanying drawings,
in which:
FIG. 1 is a sectional view, taken longitudinally and illustating
an inertia crusher, wherein the device for mounting the breaking
cone is made according to the invention;
FIG. 2 is a view sectional of a device for mounting the breaking
cone of an inertia crusher, according to the invention; and
FIG. 3 is a modification of the device for mounting the breaking
cone of an inertia crusher, wherein the annular projection is fashioned
as a taper washer.
DETAILED DESCRIPTION OF THE INVENTION
The device for mounting the breaking cone of an inertia crusher
has a crushing bowl 1 (FIG. 1) and a breaking cone 2 accomodated
therewithin. The device comprises a shell 3 (FIG. 2), in the top
portion of which there is mounted a spherical support 4 provided
with a central cylindrical hole 5 to receive a shaft 6 of the breaking
cone 2. In the bottom portion there is mounted a ball spindle 7
interconnected with a bush 8 carrying on the outer surface 9 an
out-of-balance weight 10 intended for placing the shaft 6 of the
breaking cone 2 therewithin. The bush 8 is of such a length that
its upper end 11 is disposed in the central cylindrical hole 5 of
the spherical support 4. Placed between a lower end 12 of the out-of-balance
weight 10 and a flange 13 of the bush 8 is a carrier ring 14. Provided
in the bottom portion of the shell 3 is an annular projection 15
serving to support the carrier ring 14 of the bush 8. The diameter
and height of the carrier ring 14 are such as to permit the bush
8 when tilted, to rest simultaneously upon the wall 16 of the cylindrical
hole 5 and upon the annular projection 15 of the bottom portion
of the shell 3. The projection 15 (FIG. 3) may also be fashioned
as a taper washer 17 with its inner surface 18 facing the end 12
of the out-of-balance weight 10.
The device operates as follows. Upon the dismantling of the breaking
cone 2 the bush 8 together with the out-of-balance weight 10 is
tilted about the ball spindle and rests, with its upper end 11
upon the wall 16 of the cylindrical hole 5 of the spherical support
4. At the same time, the carrier ring 14 of the bush 8 rests upon
the annular projection 15 of the bottom portion of the shell 3.
With the annular projection 15 shaped as the taper washer 17 the
carrier ring 14 rests upon the inner tapered surface 18 of the washer
17.
Thus, the bush 8 is stopped against three points, namely the wall
of the hole 5 the annular projection 15 and the ball spindle 7.
The axis of the bush 8 therewith is but slightly tilted toward the
axis of the shell 3. This enables the shaft 6 of the breaking cone
2 to be readily introduced into the crater or bore of the bush 8
when lowering the cone 2 by means of a crane on the spherical support
4.
The device for mounting the breaking cone of an inertia crusher
simplifies the mounting of the breaking cone, as no subsidiary mechanisms
and means associated therewith need be employed to mount it; reduces
the labor consumption of the assembling works when mounting the
breaking cone; and cuts down lost time when mounting the breaking
cone.
The preferred embodiments of the present invention are not to be
considered as limiting the scope of the invention. Various modifications
dependent on the design of the ball spindle, out-of-balance weight,
and shell may all be made without departing from the scope of the
invention. |