Abstrict A crusher comprises first and second rotating crusher bodies installed
on two rotatably supported shafts spaced apart from each other,
and having crusher blades provided on their outer peripheries. A
first compression board is positioned at one side of both of the
crusher bodies, forming a crushing passage with one side of these
rotating crusher bodies, and is capable of compressing an object
passing through this crushing passage. A gate board is located below
the first compression board and opens and closes the crushing passage.
Claims I claim:
1. A crusher apparatus for crushing objects comprising a housing
having spaced side walls and a bottom section, crusher means within
said housing, said crusher means comprising first and second rotatable
crusher bodies rotatable within said housing, said first rotatable
crusher bodies being spaced from said first and second side walls
to define a first path for said objects between said first side
wall and said first and second rotatable crusher bodies, said second
rotatable crusher body being spaced from said second wall to define
a second path for said objects between said second wall and said
second rotatable crusher body, a compression means pivotably mounted
on said housing and pivotable between a first position disposed
outside of said first path and a second position within said first
path, a gate means pivotably mounted on said housing at a position
generally underlying said compression means and pivotal between
a first position outside said first path and a second position within
said first path, the crusher apparatus having a first operable condition
in which said gate means is in said first position and said first
and second rotatable crusher bodies rotate in the same direction
to crush said object as the latter passes along said first path
to said bottom section of said housing, the crusher apparatus having
a second operable condition in which said gate means is in said
second position and said first and second rotatable crusher means
rotate in opposite directions to crush said object as the latter
passes along a first portion of said first path, between said first
and second oppositely rotating crusher bodies, and along said second
path to said bottom section of said housing, said compression means
being pivotable from its first to its second position while the
crusher apparatus is operating in said first condition to press
said object against said crushing means.
2. A crusher apparatus according to claim 1 wherein said compression
means is a first compression means, further comprising a second
compression means pivotably mounted on said housing and pivotable
between a first position disposed outside of said second path and
a second position within said second path, said second compression
means being pivotable from said first to said second position to
press said object against said second rotating crusher body when
the crusher apparatus is operating in said second operable condition.
3. A crusher apparatus according to claim 2 wherein said second
compression means defines a part of said second path when said second
compression means is in its first position.
4. A crusher apparatus according to claim 1 wherein said gate
means blocks said first path when said gate means is in its second
position.
5. A crusher apparatus according to claim 1 wherein said gate
means defines a part of said first path when said gate means is
in said first position.
6. A crusher apparatus according to claim 1 wherein said compression
means defines a part of said first path when said compression means
is in its first position.
7. A crusher apparatus according to claim 1 wherein said compression
means compresses said object against said second rotatable crusher
body when the crusher apparatus is in said first operable condition.
8. A crusher apparatus according to claim 1 wherein said second
rotatable crusher body is disposed at a lower elevation than said
first rotatable crusher body, and said second rotatable crusher
body is disposed laterally to one side of said first rotatable crusher
body.
9. A crusher apparatus for crushing objects comprising a housing
having spaced side walls and a bottom section, crusher means within
said housing, said crusher means comprising first and second rotatable
crusher bodies rotatable within said housing, said first and second
rotatable crusher bodies being spaced from said first side wall
to define a first path for said objects between said first side
wall and said first and second rotatable crusher bodies, said second
rotatable crusher body being spaced from said second wall to define
a second path for said objects between said second wall and said
second rotatable crusher body, a compression means pivotably mounted
on said housing and pivotable between a first position disposed
outside of said first path and a second position within said first
path, a gate means pivotably mounted on said housing at a position
generally underlying said compression means and pivotal between
a first position outside said first path and a second position within
said first path, the crusher apparatus having a first operable condition
in which said gate means is in said first position and said first
and second rotatable crusher bodies crush said object as the latter
passes along said first path to said bottom section of said housing,
the crusher apparatus having a second operable condition in which
said gate means is in said second position and said first and second
rotatable crusher means crush said object as the latter passes along
a first portion of said first path, between said first and second
crusher bodies, and along said second path to said bottom section
of said housing, said compression means being pivotable from its
first to its second position while the crusher apparatus is operating
in said first condition to press said object against said crushing
means.
Description FIELD OF THE INVENTION AND STATEMENT OF THE RELATED ART
The present invention relates to a crusher for roughly crushing
metallic crushing objects, for example, scrapped vehicles, etc.
Large-sized metal scrap, such as scrapped vehicles, etc., is recycled
by first roughly crushing such metal scrap, compressed or not compressed,
with a crusher for instance into quarters then finally crushing
these crushed pieces with a shredder. A crusher used for this recycling
has been disclosed in Japanese Utility Model Application laying-open
No. 60-124641. This crusher is a previous proposal of the present
applicant, and provide that an object to be crushed is broken between
two rotating crusher bodies having crusher blades provided on the
outer peripheries, both crusher bodies being made adjustable in
speed so that it is possible to have them correspond with the shape
of a crushing object in addition a compression blade, capable of
compressing the object against the crusher bodies, is arranged and
provided at radial sides of both crusher bodies so that it is possible
to adjust the size between both the crusher bodies and the compression
blades.
The above crusher proposed by the present applicant is extremely
effective as a means for roughly crushing metal scraps, but needs
to be further improved so that it becomes possible to select the
size of crushing according to the type of object to be crushed.
OBJECTS AND SUMMARY OF THE INVENTION
An object of the present invention is to make it possible with
a simple configuration to select the size of crushing corresponding
to the type of object to be crushed.
Another object of the present invention is to make it possible
without greatly changing construction of the existing crusher to
suitably select the size of crushing corresponding to the type of
object to be crushed.
A crusher of the present invention includes first and second rotating
crusher bodies, installed on two rotatably supported shafts arranged
at a specified spaced apart relationship from each other, and having
crusher blades provided on their outer peripheries, respectively
a first compression board is positioned at one side of both crusher
bodies, forming a crushing passage with the rotating crusher bodies,
and capable of compressing an object passing through this crushing
pasage and a gate board is located below the first compression board,
and is operable to open and close the crushing passage with the
gate board.
Another crusher of the present invention includes first and second
rotating crusher bodies installed, on two rotatably supported shafts
spaced apart from each other, and having crusher blades provided
on their peripheries, respectively. A first compression board is
positioned at one side of both rotating crusher bodies, forming
a crushing passage with the these rotating crusher bodies, and capable
of compressing an object passing through this crushing passage.
The second compression board positioned at one side of both of the
crusher bodies forms a crushing passage with these rotating crusher
bodies, and is capable of compressing an object passing through
this crushing passage and a gate board is located below the first
compression board, and opens and closes a crushing passage on the
side of the first compression board.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a vertical sectional view, and
FIG. 2 a horizontal sectional view of a crusher according to the
present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
As shown in FIG. 1 a main body frame 1 rotatably supports shafts
2 3. These rotatably supported shafts, mount first and second crusher
bodies 4 5 having crusher blades 41 51 on the outer peripheries
respectively. Each rotatably supported shaft 2 3 is interlocked
with a torque motor (not shown), and each torque motor can be rotated
normally and reversely, and can be adjusted in speed by a hydraulic
circuit provided for adjusting the revolution speed of this torque
motor. This makes it possible for the rotatably supported shafts
2 3 to rotate normally and reversely, so that they can be adjusted
in revolution speed.
The first and the second crusher bodies 4 5 are arranged one after
the other as shown in FIG. 2 and can crush an object S there between.
At one side of both the crusher bodies 4 5 (at the left hand side
in FIG. 1), that is, at the inlet side, a first compression board
6 is positioned and forms a crushing passage 7 for an object to
be crushed. At the opposite side (the right-hand side in FIG. 1),
a second compression board 8 is positioned adjacent a crushing passage
7a formed between the second compression board and the crusher body
4. A crushing passage 7b is formed between the crusher bodies 4
5.
The first compression board 6 carries crusher projections 61 provided
parallel to each other in the width direction at the fore end, and
is rotatably installed on a fixed shaft 62 fixed to the main body
frame 1 at the aft end. To the backside center section of the first
compression board 6 is connected the fore end of a ram 91 having
a cylinder 9. The first compression board 6 is rotated CCW or CW
with the fixed shaft 62 as the center of rotation corresponding
to the expansion or contraction of the ram 91 so that it becomes
possible to adjust the width of the crushing passage 7 formed with
the side section of the crusher bodies 4 5.
The first compression board 6 is located at the center with the
inlet hopper 10 above and the gate board 11 below.
The inlet hopper 10 is rotatably supported by the fixed shaft 101
fixed to the main body frame 1 at the bottom section of the fore
end, and horizontally supportable by the receiver body (now shown)
at the center of the bottom section of the inlet hopper. The inlet
hopper 10 is rotated CW, driven by a cylinder (not shown), with
the fixed shaft 101 as the center of rotation. When the inlet hopper
10 is tilted, an object S inside the hopper is dropped into the
crushing passage 7 inside the main body frame 1.
Also, the gate board 11 being rotatably supported by the fixed
shaft 111 at the aft end, is rotated CCW by expansion of the ram
121 of the cylinder 12 with the shaft 111 as the center of rotation,
so that it will block the lower part of the crushing passage 7.
Item 13 is a guide plate for guiding a crushing object S to the
sides of the crusher bodies 4 5.
The second compression board 8 carries crusher projections 81
81a provided parallel to each other in two rows on the upper surface
at the fore end, and is rotatably installed on the fixed shaft 82
fixed to the main body frame 1 at the aft end. To the backside surface
of the second compression board 8 is fixed the fore end of a ram
141 and the cylinder 14. The second compression board 8 is rotated
CW or CCW, driven by the cylinder 14 so that it can adjust the
width of the lower part of the crushing passage 7a.
Next, the method of operation of the crusher will be described.
As the first method of operation, a case will be described in which
a crushing object S is roughly crushed. In this case, the crushing
passage 7 is employed. Prior to application, the gate board 11 is
set to a position shown by solid line in FIG. 1 to open wide the
lower part of the crushing passage 7. The first and second crusher
bodies 4 5 rotate normally (CCW). Keeping this rotation state,
an object S from the inlet hopper 10 is fed to the inside of the
main body frame 1 and the object enters the crushing passage 7
where it will be crushed by the crusher bodies 4 5. Then, the cylinder
9 of the first compression board 6 is operated to the first compression
board CCW, and the object S will be compressed against the side
of the second crusher body 5 and crushed into pieces of a specified
size.
As the second method of operation, a case will be described in
which an object S is finally broken. In this case, the crushing
passages 7a, 7b are employed. Prior to application, the ram 121
of the cylinder 12 is extended to swing the gate board 11 about
the fixed shaft 111. The gate board 11 is set to a position shown
by chain line in FIG. 1 to close the lower part of the crushing
passage 7. Then, the first crusher body 4 is rotated reversely (CW),
and the second crusher body 5 normally. Keeping this rotation state,
an object S is fed into the crusher, and the object will first enter
the crushing passage 7 where it will be crushed by the first and
the second crusher bodies 4 5. Next, the object thus roughly crushed
will be further crushed between the first and the second crusher
bodies 4 5 as it passes through the crushing passage 7b, then
moving down to the crushing passage 7a, where it will be further
broken between the second crusher body 5 and the second compression
board 8.
Another method is available that is similar to the second method
of application but does not use the second compression board 8.
Accordingly, an object will be crushed only in the process of passing
through the crushing passage 7b with the crushed pieces becoming
larger in size as compared to that obtained by the second method
of application. |