Abstrict An inertia cone crusher having a shell installed via elastic shock-absorbers
on a base is provided with a crushing bowl, and a breaking head
having a shaft mounted on a spherical support. An out-of-balance
unit formed as a bearing bush is provided with an out-of-balance
weight and a carrier disc and is installed on the shaft of the breaking
head. A rod for mounting the out-of-balance unit on the breaking
head has its lower end installed on the bearing bush. The upper
end of the rod is installed in a bore of the shaft shank with a
mounting clearance with respect to the rod end face and the out-of-balance
unit is liftable and fixable in its upper position.
Claims What is claimed is:
1. An inertia cone crusher comprising:
a shell installed on a base;
a crushing bowl fastened to said shell;
a breaking head resting on a spherical support formed in an upper
portion of said shell, said breaking head having a shaft depending
therefrom, said shaft having a bore in its shank;
elastic shock-absorbers intalled between said shell and said base
of said shell;
an out-of-balance unit comprising:
a bearing bush installed about the shaft of said breaking head;
an out-of-balance weight fastened to said bearing bush;
a carrier disc arranged under said out-of-balance weight;
a rod for mounting said out-of-balance unit to the shaft of said
breaking head, said rod having an upper end and a lower end;
said lower end of said rod being installed on said bearing bush;
said upper end of said rod being installed in the bore of said
shank with a clearance with respect to the end face of said bore
permitting axial movement of said rod relative to said shaft; and
means for lifting said out-of-balance unit relative to said shaft
and fixing it in the upper position.
2. The inertia cone crusher according to claim 1 wherein said
means for mounting said upper end of said rod comprises:
an annular shoulder located on said upper end of said rod and arranged
in said shank of said shaft of said breaking head;
a self-aligning end thrust bearing arranged and fixed in the bore
of said shank adapted to support said annular shoulder when the
upper end of said rod is finished and said breaking head rests on
said spherical support.
3. The inertia cone crusher according to claim 2 wherein said
means for lifting said out-of-balance unit comprises pusher means
located in said lower portion of said shell and arranged uniformly
along a circumference concentric with the crusher axis.
4. The inertia cone crusher according to claim 3 wherein said
elastic shock-absorbers comprise pneumatic balloons, the said crusher
having struts ararnged under said pusher means on said base adapted
so that said pusher means would bear against said struts when said
shell is set on said pneumatic balloons.
5. The inertia cone crusher according to claim 4 wherein said
pneumatic baloons are provided with replenishment means.
6. The inertia cone crusher according to claim 2 wherein said
means for lifting said out-of-balance unit comprises lifting jacks
installed on said base, and a horizontal oil deflecting ring is
located on an upper portion of said out-of-balance unit projecting
radially outward.
7. The inertia cone crusher according to claim 6 wherein the lower
surface of said oil reflecting ring is spherical and has a center
coinciding with the center of said spherical support of said breaking
head, and, and end-face seal is arranged on said shell concentrical
with the crusher axis in engagement with the lower surface of said
oil deflecting ring.
8. The inertia cone crusher according to claim 7 wherein said
oil deflecting ring is mounted on said bearing bush by means of
a bearing.
9. The inertia cone crusher according to claim 1 wherein said
means for mounting said upper end of said rod comprises:
a T-shaped gripper located in said bore of said shank of said shaft;
a slot formed in said upper end of said rod, corresponding to said
T-shaped gripper adapted to articulate with said T-shaped gripper
when said upper end of said rod is mounted on said breaking head.
10. The inertia cone crusher according to claim 9 wherein said
means for lifting said out-of-balance unit comprises pusher means
located in said lower portion of said shell and arranged uniformly
along a circumference concentric with the crusher axis.
11. The inertia cone crusher according to claim 10 wherein said
elastic shock-absorbers comprise pneumatic balloons, said crusher
having struts arranged under said pusher means on said base adapted
so that said pusher means would bear against said struts when said
shell is set on said pneumatic balloons.
12. The inertia cone crusher according to claim 11 wherein said
pneumatic balloons are provided with replenishment means.
13. The inertia cone crusher according to claim 9 wherein said
means for hoisting said out-of-balance unit comprises lifting jacks
installed on said base, and horizontal oil deflecting ring is located
on an upper portion of said out-of-balance unit projecting radially
outward.
14. The inertia cone crusher according to claim 13 wherein the
lower surface of said oil deflecting ring is spherical and has a
center coinciding with the center of said spherical support of said
breaking head, and an end-face seal is arranged on said shell concentrical
with the crusher axis in engagement with the lower surface of said
oil deflecting ring.
15. The inertia cone crusher according to claim 14 wherein said
oil deflecting ring is mounted on said bearing bush by means of
a bearing.
16. The inertia cone crusher according to claim 1 wherein said
means for lifting said out-of-balance unit comprises pusher means
located in a lower portion of said shell and arranged uniformly
along a circumference concentric with the crusher axis.
17. The inertia cone crusher according to claim 16 wherein said
elastic shock-absorbers comprise pneumatic balloons, said crusher
having struts arranged under said pusher means on said base adapted
so that said pusher means would bear against said struts when said
shell is set on said pneumatic balloons.
18. The inertia cone crusher according to claim 17 wherein said
pneumatic balloons are provided with replenishment means.
19. The inertia cone crusher according to claim 1 wherein said
means for lifting said out-of-balance unit comprise lifting jacks
installed on said base, and a horizontal oil deflecting ring is
located on an upper portion of said out-of-balance unit projecting
radially outward.
20. The inertia cone crusher according to claim 19 wherein the
lower surface of said oil deflecting ring is spherical and has a
center coinciding with the center of said spherical support of said
breaking head and an end-face seal is arranged on said shell concentrical
with the crusher axis in engagement with the lower surface of said
oil deflecting ring.
21. The inertia cone crusher according to claim 20 wherein said
oil deflecting ring is mounted on said bearing bush by means of
a bearing.
Description FIELD OF THE INVENTION
The present invention generally relates to material crushing, and
particularly to inertia cone crushers.
Most successfully, the present invention can be used in the mining
and dressing, chemical and construction industries.
BACKGROUND OF THE INVENTION
The inertia cone crushers now in use comprise a crushing bowl accommodating
a breaking head therein to form an annular crushing space therebetween.
The breaking head is installed on a spherical support fastened to
the crusher shell like the crushing bowl. The shaft of the breaking
head is arranged within a bearing bush carrying an out-of-balance
weight on its outer surface. The bush is linked with a drive arranged
in the lower portion of the crusher by means of a flexible transmission.
The installation height of inertia crushers is determined by the
length of the flexible transmission which is the principal assembly
of the crusher defining the complexity of its construction, the
labor input in service and the cost of construction of the structures
used to install the crusher.
During the crusher operation the liner mounted on the crusher breaking
head is worn and requires replacement. Due to the construction features
of the crusher the breaking head must be removed at the repair site
in order to replace the liner. This operation in conjunction with
further re-installation of the breaking head into the crusher is
complicated by the flexible coupling of the bush with the drive
and the necessity to fix the bush in a position as close as possible
coaxially with the crusher shell.
Known in the prior art is an inertia cone crusher (cf. USSR Author's
Certificate No. 596 280) comprising a shell installed through elastic
shock-absorbers on a base and having a crushing bowl, a breaking
head with a shaft mounted on a spherical support made in the shell,
an out-of-balance unit made as a bearing bush provided with an out-of-balance
weight, installed on the shaft of the breaking head and connected
by means of a flexible transmission with a drive rigidly fixed on
the base.
In this construction the flexible transmission is made as a ball
spindle being both a driving member and a support for the out-of-balance
unit. The spherical tips of the spindle are provided with sockets
having balls installed therein and are arranged in slit bores of
the bearing bush and of the drive.
The articulated joints of the transmissions used do not provide
the vertical position of the bush when the breaking head is dismantled,
therefore before its dismantling the bush is placed coaxially with
the shell axis by means of saddles placed under the out-of-balance
weight which are removed from the crusher after the breaking head
is reinstalled. This operation is time and labor-consuming. The
spindle and the slots for the tips thereof are complex and require
a high degree of accuracy in their manufacture, making the construction
of the machine as a whole more expensive.
The operation of the spindle as a driving member and a support
for the out-of-balance unit reduces its life and the reliability
of the drive to which the axial load is transmitted.
Furthermore, connection of the out-of-balance unit with the drive
by a single spindle increases the height of installation since it
is necessary to organize a complicated oil and dust sealing between
the movable shell and its base.
Also known in the prior art is an inertia cone crusher (cf. USSR
Author's Certificate No. 632 388) comprising a shell installed
through elastic shock-absorbers on a base and having a crushing
bowl, a breaking head with a shaft mounted on a spherical support
made in the shell, an out-of-balance unit made as a bearing bush
provided with an out-of-balance weight, installed on the shaft of
the breaking head and linked by means of a flexible transmission
with a drive rigidly fixed on the base.
In this crusher the flexible transmission is made as a ball spindle
connecting the bearing bush with an intermediate shaft journaled
in shell bearings and linked by its lower end with the drive by
means of a second ball spindle or an elastic compensation clutch.
Like in the previous analogue, the upper ball spindle serves to
function both as a driving member and a support for the out-of-balance
unit; however, here it transfers the axial load through the bearings
of the intermediate shaft to the shell. This increases the life
of the drive, but complicates the construction and increases the
production cost of the machine since new additional members--the
intermediate shaft with bearings and the additional spindle or the
clutch--are introduced into the transission.
The members introduced additionally into the transmission increase
still more the installation height of the crusher as compared with
the previous crusher and do not simplify the dismantling and re-installation
of the breaking head.
Also known is an inertia cone crusher (cf. USSR Author's Certificate
No. 419 240).
This crusher comprises a shell installed through elastic shock-absorbers
on a base and having a crushing cone, a breaking head with a shaft
mounted on a spherical support made in the shell, an out-of-balance
unit made as a bearing bush installed on the breaking head shaft
and provided with an out-of-balance weight and a carrier disc, a
rod used for mounting said out-of-balance unit on the breaking head
and having its lower end mounted in the bearing bush, and a means
for mounting the upper end of the rod in an upper portion of the
breaking head.
As distinguished from the previous constructions, mounting of the
out-of-balance unit in this crusher on the breaking head allows
to the elimination of the axial load acting on the flexible transmission
and driving member. This improves the reliability of the transmission.
However, since the upper end of the rod is fastened to the upper
portion of the breaking head, the dismantling of the latter is substantially
complicated by the fact that it is first necessary to disassemble
its liner fastening in order to provide access to the rod fastening
assembly. This is a very labor-consuming operation, especially for
industrial large-size crushers. Large crusher installation height,
complexity of the construction and the labor-consuming operations
for the breaking head liner replacement involve the same difficulties
as in the previously discussed crushers.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an inertia
cone crusher that would reduce the labor input when dismantling
and re-installing the breaking head.
Another object of the present invention is to provide an inertia
cone crusher that would reduce the waste of time in dismantling
and re-installing the breaking head.
Still another object of the present invention is to provide an
inertia cone crusher simple in design.
A further object of the present invention is to provide an inertia
cone crusher that would reduce the installation height of the crusher.
With these and other objects in view there is proposed an inertia
cone crusher comprising a shell installed through elastic shock-absorbers
on a base and having a crushing bowl, a breaking head with a shaft
mounted on a spherical support made in the shell, an out-of-balance
unit made as a bearing bush installed on the shaft of the breaking
head and provided with an out-of-balance weight and a carrier disc,
a rod for mounting the out-of-balance unit on the breaking head,
having its lower end mounted in the bearing bush, and a means for
mounting the upper end of the rod on the breaking head. In accordance
with the present invention, the means for mounting the upper end
of the rod is installed in a bore made in a shank of the shaft with
a mounting clearance with respect to an end face of the rod whereas
the out-of-balance unit has a means for lifting it within the mounting
clearance and for fixing it in the upper position.
The advantage of the inertia cone crusher proposed stems from the
reduction in the labor input required for removal and re-installation
of the breaking head owing to the simplified disconnection of the
out-of-balance unit from the breaking head shaft. Simultaneously,
time losses are reduced during the operation of the inertia cone
crusher, its construction is simplified and the installation height
is decreased.
According to one embodiment of the inertia cone crusher, the means
for mounting the upper end of the rod is made as an annular shoulder
supported by a self-aligning end thrust bearing fixed in the bore.
Such an embodiment simplifies its construction and provides the
reliable mounting of the breaking head. Furthermore, the installation
height of the inertia cone crusher is reduced owing to mounting
and fixation of the end thrust bearing in the bore of the shaft
shank.
According to another embodiment of the inertia cone crusher, the
means for mounting the upper end of the rod comprises a T-shaped
gripper made in the bore of the shaft shank of the breaking head
and articulated with the associated slot made in the upper end of
the rod.
Such an implementation allows the out-of-balance unit to be disconnected
from the breaking head without the use of manual labor and waste
of time only by rotary motions of the breaking head during its removal
from the crusher.
It is advisable that the means for lifting the out-of-balance unit
be made as pushers installed in a lower portion of the shell and
arranged uniformity along a circumference concentric with the crusher
axis.
Such an embodiment for lifting the out-of-balance unit allows it
to be moved vertically by a force uniformly distributed along a
circumference. This eliminates substantial deviation of the bush
axis from its initial position in the vertical plane and provides
convenient conditions for mounting the breaking head.
It is also advisable to make shell shock-absorbers as pneumatic
balloons and to arrange struts under said pushers so that the pushers
would bear against said struts when the shell is set on the pneumatic
balloons.
Such an implementation of the shock-absorbers and the shell base
allows the construction of the pushers to be simplified and eliminates
individual out-of-balance unit lifting mechanisms in each pusher.
It is advisable to complete the pneumatic balloons with a replenishment
means.
Such a means permits the lifting of the crusher with respect to
the base by supplying air into the pneumatic balloons and to permit
its return to the initial position after mounting of the breaking
head without the use of manual labor to supply additional air into
the balloons.
Simultaneously, said means allows possible air leakages from the
pneumatic balloons to be compensated for during the crusher operation.
It is also advisable to make the means for lifting and fixing the
out-of-balance unit as lifting jacks installed on the shell base,
and to mount an oil defecting ring in the upper portion of the out-of-balance
unit.
The implementation of an oil deflecting ring simplifies the construction
of the inertia cone crusher by making its shell without movable
pushers and by locating the oil casing above the out-of-balance
unit. This additionally simplifies the operation of the crusher
owing to the convenient access to the out-of-balance unit. Furthermore,
the crusher installation height is reduced.
It is also advisable to make spherical a lower surface of the oil
deflecting ring projecting beyond the out-of-balance weight, with
a center coinciding with the center of the spherical support of
the breaking head and provided with an end-face seal arranged concentrically
with the crusher axis.
Such an implementation of the oil deflecting ring provides a reliable
sealing of the crusher casing and prevents oil leakages and ingress
of dust thereinto as the out-of-balance unit is rotating and vibrating
with a variable amplitude.
It is further advisable to mount the oil deflecting ring on the
bearing bush by means of a bearing.
Such a ring installation allows the reliability of the end-face
seal to be improved since it prevents rotation of the ring relative
to the seal.
Other and further objects and advantages of the invention will
be better understood from the following description taken in conjunction
with the accompanying drawings illustrating preferred embodiments
of the invention, wherein:
FIG. 1 is a longitudinal sectional view of the inertia cone crusher
made in accordance with the present invention;
FIG. 2 shows connection of the breaking head with the bearing bush
of the out-of-balance unit;
FIG. 3 shows the means for mounting the upper end of the rod in
accordance with one embodiment of the present invention;
FIG. 4 shows the means for mounting the upper end of the rod in
accordance with another embodiment of the present invention;
FIG. 5 is a sectional view of the embodiment shown in FIG. 4 as
taken along the line V--V;
FIG. 6 shows an embodiment of the means for lifting and fixing
the out-of-balance unit, made in form of pushers;
FIG. 7 shows an embodiment of the means for lifting and fixing
the out-of-balance unit, provided with pneumatic balloons;
FIG. 8 shows the replenishment means for the additional feeding
of the pneumatic balloons represented in FIG. 7;
FIG. 9 shows an embodiment of the means for lifting and fixing
the out-of-balance unit, made in form of lifting jacks;
FIG. 10 shows one of modifications of the embodiment shown in FIG.
9;
FIG. 11 shows one of modifications of the construction of FIG.
10.
DETAILED DESCRIPTION OF THE INVENTION
Referring now to the appended drawings and first of all to FIG.
1 the inertia cone crusher made in accordance with the present
invention comprises a shell 3 installed through elastic shock-absorbers
2 on a base 1 and having a crushing bowl 4 a breaking head 5 with
a shaft 6 installed on a spherical support 7 made in the shell 3
an out-of-balance unit 8 made as a bearing bush 9 installed on the
shaft 6 of the breaking head 5 and provided with an out-of-balance
weight 10 and a carrier disc 11. Furthermore, the crusher incorporates
a rod 12 (FIGS. 1 2) for mounting the out-of-balance unit 8 on
the breaking head 5 having its lower end 13 mounted in the bearing
bush 9 and a means 14 for mounting an upper end 15 of the rod 12
on the breaking head 5.
The means 14 for mounting the upper end 15 of the rod 12 is installed
in a bore 17 of a shank 16 (FIG. 2) of the shaft 6 with a mounting
clearance 18 with respect to a rod end-face 19. The out-of-balance
unit 8 (FIG. 1) has a means 20 for lifting it within the mounting
clearance 18 and for fixing it in the upper position. The upper
end 15 (FIG. 2) of the rod 12 is installed on an end thrust bearing
21 a race 22 secured in the bore 17. The lower end 13 of the rod
12 is arranged with the slide fit in a central hole 23 of a bottom
24 of the bearing bush 9 and fastened thereto by means of a wedge
25 inserted in a slot 26 of the lower end 13 of the rod 12 and bearing
against the lower surface of the bottom 24 of the bearing bush 9
by its upper end face 27. The rod 12 is provided with an annular
projection 28 and an elastic compensation seal 29 arranged between
the annular projection 28 and the an upper surface 30 of the bottom
24 of the bearing bush 9. A center 31 of gravity of the wedge 25
is located outside the axis of the rod 12 on a penetrating portion
32 of the wedge 25.
Referring now to FIG. 3 the means 14 for mounting the upper end
15 of the rod 12 is made as an annular shoulder 33 supported by
a self-aligning end thrust bearing 34 arranged on a carrier ring
35 and fixed by a spring washer 36. The spring washer 36 is installed
in an annular groove 37 of the bore 17 of the shank 16 of the shaft
6. The lower end 13 of the rod 12 is fastened to the bearing 9 by
a radially-movable split ring 38 having an inner tapered edge installed
in a tapered annular groove 39 of the lower end 13 of the rod 12.
Referring now to FIG. 4 the means 14 for mounting the upper end
15 of the rod 12 comprises a T-shaped gripper 40 (FIGS. 4 5) made
in the bore 17 and articulated with an associated slot 41 made in
the upper end 15 of the rod 12. The slot 41 is provided with a cover
42 having a diametral slit 43 to pass a lower end 44 of the T-shaped
gripper 40 into the slot 41. Made at the lower surface of the cover
42 of the slot 41 at right angles to the slit 43 is a groove 45
where the lower end 44 of the T-shaped gripper 40 is accommodated.
FIG. 6 represents an embodiment of the means 20 for lifting and
fixing the out-of-balance unit 8. In accordance with this embodiment
the means 20 is made as pushers 46 installed in a lower portion
47 of the shell 3 and arranged uniformly along a circumference concentrical
with the crusher axis. The pushers 46 are equipped with pressed-out
springs 48 and are mounted in cylindrical guides 49 in the lower
portion 47 of the shell 3.
Referring to FIG. 7 the shock-absorbers 2 of the shell 3 can be
made as pneumatic balloons 50 struts 51 being arranged under the
pushers 46 on the base 1 of the shell 3 and being installed so that
the pushers 46 would bear against the struts 51 when the shell 3
sets on the pneumatic balloons 50.
In the embodiment shown in FIG. 8 the pneumatic balloons 50 are
provided with a replenishment means 52 used to additionally feed
them.
Referring to FIG. 9 the embodiment of the means 20 for lifting
and fixing the out-of-balance unit 8 is made as lifting jacks 53
installed on the base 1 of the shell 3. An oil deflecting ring 55
is mounted on a top portion 54 of the out-of-balance unit 8.
In the embodiment illustrated in FIG. 10 the oil deflecting ring
55 has a spherical lower surface 56 on that portion which projects
beyond the out-of-balance weight 10. The center of the spherical
surface 56 coincides with a center 57 of the spherical support 7
of the breaking head 5 and is provided with an end-face seal 58
in an annular groove 59 of the shell 3 concentric with the crusher
axis.
Referring to FIG. 11 the oil defecting ring 55 is mounted on the
bearing bush 9 by means of a bearing 60.
The inertia cone crusher made in accordance with the present invention
operates in the following manner.
When the out-of-balance unit 8 (FIG. 1) is rotating, a centrifugal
force circulating over the circle is generated and is transferred
through the bearing bush 9 to the shaft 6 and to the breaking head
5 that starts precessing with respect to the spherical support 7.
The ore fed into the annular space between the crushing bowl 4 and
the breaking head 5 is crushed in the region of their approach.
When the working surface of the breaking head 5 is worn, the breaking
head 5 is removed from the crusher for restoration. The dismantling
of the breaking head 5 is performed in the following manner.
The out-of-balance unit 8 is lifted by turning the screws of the
means 20 which press against the carrier disc 11 thus taking up
the mounting clearance 18 (FIG. 2) and bearing the upper end 15
of the rod 12 against the end face 19 of the bore 17. This is accompanied
by a compression of the compensation seal 29 within the limits of
its elastic deformation, and the tension in the wedge joint of the
bearing bush 9 and the lower end 13 of the rod 12 is relieved. The
out-of-balance unit 8 is fixed in this position with the aid of
the means 20 (FIG. 1). Then the wedge 25 (FIG. 2) is readily removed
from the slot 26 and the breaking head 5 (FIG. 1) is dismantled.
The re-installation of the breaking head 5 is performed in the
reverse order. Owing to the fact that during the dismantling of
the breaking head 5 the out-of-balance unit 8 is fixed so that its
bearing bush 9 has a negligible deviation from the coaxial arrangement
with the shell 3 the shaft 6 readily enters the bearing bush 9
bearing against the upper end 15 of the rod 12 by the end face 19
of the bore 17. The compensation seal 29 (FIG. 2) is deformed, and
the wedge 25 is readily installed into the slot 26. The screws of
the means 20 (FIG. 1) are loosened, and a tension is developed in
the wedge joint that takes up the axial load of the mass of the
out-of-balance unit 8. As the out-of-balance unit 8 is rotating,
an additional tension is produced in said wedge joint owing to the
displacement of the center 31 of gravity (FIG. 2) of the wedge 25
with respect to the axis of rotation in the direction of its penetrating
portion 32 preventing fall-out of the wedge 25 and loosening of
the joint due to the action of the centrifugal force.
When the embodiment shown in FIG. 3 is used, a more reliable installation
of the lower end 13 of the rod 12 into the central hole 23 of the
bottom 24 of the bearing bush 9 is provided as the breaking head
(not shown) is mounted. Furthermore, the fixation of the carrier
ring 35 inside the bore 17 allows the installation height of the
crusher to be reduced and the assembling of the end thrust bearing
34 to be simplified.
When the embodiment shown in FIGS. 4 and 5 is used, the dismantling
of the breaking head (not shown) is performed as follows. When the
out-of-balance unit 8 is fixed in the upper position the T-shaped
end 44 of the gripper 40 leaves the groove 45 the breaking head
is lifted by a crane (not shown) to a minimum height providing its
separation from the spherical support 7 and is turned around its
axis through 90.degree.. The lower portion 44 of the gripper 40
becomes aligned with the slit 43. This allows the breaking head
to be withdrawn from the crusher. The re-installation of the breaking
head 5 is performed in the reverse order.
The embodiment of the means 20 shown in FIG. 6 allows a portable
lever or other mechanical elevators to be used in order to speed
up and to simplify lifting and fixing of the out-of-balance unit
8 as compared with the screw jacks mounted within the shell 3. The
uniform distribution of the pushers 46 along the circumference concentric
with the crusher axis provides a substantially vertical lifting
of the out-of-balance unit 8.
If the shock-absorbers 2 of the shell 3 are the pneumatic balloons
50 (FIG. 7), lifting and fixing of the out-of-balance unit 8 are
performed by setting the shell 3 releasing air from the pneumatic
balloons 50. In this case the pushers 46 bear against the struts
51 of the base 1 and are displaced upwards with respect to the shell
3 until the shell 3 touches the surface of the base 1. The length
of the pushers 46 is selected with due regard to lifting of the
out-of-balance unit 8 within the mounting clearance 18 and the complete
setting of the pneumatic balloons 50.
If the replenishment means 52 (FIG. 8) is used mounting of the
breaking head (not shown) is carried out with lower labor input
owing to simultaneous lifting of the shell 3 and lowering of the
out-of-balance unit 8 by means of the pneumatic balloons 50 with
the aid of air without use of manual labor to supply air thereinto.
Furthermore, such a supply of additional air compensates possible
air leakages from the penumatic balloons when the crusher operates.
If the means 20 for lifting and fixing the out-of-balance unit
8 is the lifting jacks 53 (FIG. 9) installed on the base 1 of the
shell 3 mounting and the dismantling of the breaking head 5 are
carried out by simultaneous supply of the working fluid into the
lifting jacks or by its discharge therefrom.
The out-of-balance unit 8 is fixed in the upper position by locking
the working fluid in the lifting jacks 53. The use of the lifting
jacks partially arranged inside the shell 3 allows the lowering
of the installation height of the crusher due to the installation
of oil deflecting ring 55 in the upper portion 54 of the out-of-balance
unit 8. This provides more easy access to the lower end 13 of the
rod 12 (FIG. 3) for disconnection of the breaking head 5 from the
out-of-balance unit or its connection thereto.
If the circumferential lower surface 56 (FIG. 10) of the oil deflecting
ring 55 is made spherical and is in contact with the end-face seal
58 oil leakage from the casing (not shown) of the crusher and dust
ingress thereinto are both avoided. The contact of the oil deflecting
ring 55 with the end-face seal 58 over a sphere provides their relative
displacement without any clearance.
If the oil deflecting ring 55 is connected with the bearing bush
9 by means of the bearing 60 (FIG. 11), the rotation of the oil
deflecting ring 55 with respect to the end-face packing 58 is avoided.
This substantially increases the life of the seal.
The proposed inertia cone crusher made in accordance with the present
invention:
reduces the labor input for installing and dismantling the breaking
head;
prevents waste of time in mounting and dismantling of the breaking
head;
simplifies the construction of the crusher;
improves the reliabiity of the crusher;
reduces the installation height of the crusher.
While particular embodiments of the invention have been shown and
described, various modifications thereof will be apparent to those
skilled in the art and therefore it is not intended that the invention
be limited to the disclosed embodiments or to the details thereof
and the departures may be made therefrom within the spirit and scope
of the invention as defined in the claims. |