JP2004275875A - Shearing type crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shearing type crusher capable of reducing the falling-off of a holder. <P>SOLUTION: A rotor 4 is horizontally arranged within a discharge port 3 provided to the bottom part of a crushing chamber 1 and a large number of oval attaching holes 5, the longitudinal direction of which is set in the rotary direction of the rotor, are bored in the outer periphery of the rotor. Holders 7, each of which holds a plate-shaped carbide chip 6 formed so that a part of one surface thereof forms a cutting edge, are fitted in the respective attaching holes and a plate-shaped fixed blade 13, the cutting edge of which is meshed with the cutting edge of each of the carbide chips, is horizontally provided to the bottom part facing the discharge port 3 of the crushing chamber 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a shearing type crusher for shearing and crushing general waste and industrial waste, for example, shredder dust, paper, roll, string or film-like plastic, bale products, wood chips, and the like into small pieces.
[0002]
[Prior art]
Conventionally, as a shearing type crusher of this type, a rotor is horizontally disposed in a discharge port provided at the bottom of a crushing chamber, and a number of rotary blades having a short column shape on an outer periphery of the rotor are partially cut at one end. Disclosed is a cutting machine which is attached via one bolt each so as to form an edge, and has a horizontally provided plate-shaped fixed blade having a cutting edge meshing with a cutting edge of each rotary blade on a bottom portion facing the discharge port. (For example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent No. 2,671,108
On the other hand, there is also known a rotary blade in which a plate-shaped carbide tip in which a part of one surface forms a cutting edge is attached via a bolt to one end surface of a short columnar holder having a cross section having the same shape as the one surface. ing.
The above-mentioned rotary blades engage with the lower halves of the rotor, and have a bottom surface in which the outer periphery of the rotor is notched so as to become deeper from the front to the rear in the rotation direction of the rotor, and the rotor at the bottom surface. It is engaged with a rotary blade receiving recess formed of a locking surface that is continuous at right angles to the rear side in the rotation direction, and is fixed to the bottom of the rotary blade receiving recess via one or two bolts.
[0005]
[Problems to be solved by the invention]
However, in the conventional shearing type crusher, when foreign matter such as metal is mixed in the waste, when the rotary blade is made of a carbide tip and a holder, the carbide tip is broken and the holder is broken due to a broken bolt. There is a problem that dropping occurs frequently.
The breakage of the bolt causing the holder to fall off is considered to be due to the fact that the front side in the rotation direction of the rotor in the rotary blade accommodating recess is open, and when a foreign object is caught, a force acts on the holder to lift the front side. .
[0006]
Then, an object of the present invention is to provide a shearing type crusher which can reduce the falling off of the holder.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a shearing type crusher of the present invention has a rotor arranged horizontally in a discharge port provided at the bottom of a crushing chamber, and a plurality of oval-shaped rotors having a rotation direction as a longitudinal direction on the outer periphery of the rotor. In each mounting hole, a holder holding a plate-shaped carbide tip is fitted so that a part of one side forms a cutting edge, and each carbide is attached to the bottom facing the discharge port. A plate-like fixed blade having a cutting edge that meshes with a cutting edge of a chip is provided horizontally.
[0008]
On the other hand, the holder has a chip engaging groove that engages with the lower half of the cemented carbide tip, and has a locking surface connected to one end thereof and parallel to one surface of the cemented carbide tip. It is preferable to be fixed to the bottom of the mounting hole via a plurality of bolts.
The holder has a locking surface having the same shape as and parallel to one surface of the cemented carbide tip, is fitted to a majority portion of the mounting hole, and is fixed to the bottom of the mounting hole via a plurality of bolts. A sub holder having a main holder and a chip engaging groove for engaging with a lower half portion of a carbide tip, which is fitted into the rest of the mounting hole and fixed to the bottom of the mounting hole via one bolt. It may be composed of
Furthermore, the holder has a chip engaging groove that engages with the lower half of the carbide tip and a locking surface that is connected to one end thereof and is parallel to one surface of the carbide tip, and is fitted into the mounting hole. A main holder fixed to the bottom of the mounting hole via a plurality of bolts, and a short columnar shape having a cross section identical to one side of the carbide tip, one end of which abuts against a locking surface of the main holder to engage the tip holder. The sub-holder may be engaged with the mating groove and fixed to the bottom of the chip engaging groove via one bolt.
[0009]
[Action]
In the shearing type crusher of the present invention, even when a force that lifts the front side is applied to the holder when foreign matter is caught, lifting of the front side of the holder is prevented by the front peripheral wall of the mounting hole.
[0010]
On the other hand, the holder has a chip engaging groove that engages with the lower half of the cemented carbide tip, and has a locking surface connected to one end thereof and parallel to one surface of the cemented carbide tip. The holder is formed of a single member by being fixed to the bottom of the mounting hole through the bolt.
Further, the holder has a locking surface having the same shape and a parallel surface as one surface of the cemented carbide tip, is fitted to the majority of the mounting hole, and is fixed to the bottom of the mounting hole via a plurality of bolts. A holder and a sub-holder having a chip engaging groove engaged with a lower half portion of the carbide tip, fitted to the rest of the mounting hole, and fixed to the bottom of the mounting hole via one bolt; and Thus, a receiving recess for receiving the carbide tip is formed by the tip engaging groove of the sub-holder and the locking surface of the main holder.
Further, the holder has a chip engaging groove that engages with the lower half of the cemented carbide tip, and has a locking surface connected to one end thereof and parallel to one surface of the cemented carbide tip. The main holder is fixed to the bottom of the mounting hole via a bolt, and has a short columnar shape having the same cross-section as one side of the cemented carbide tip. The sub holder is engaged with the groove and is fixed to the bottom of the chip engaging groove via one bolt, so that even if the sub holder falls off and the bolt is broken and remains in the main holder, Replacement of the main holder enables early recovery.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a partially cutaway perspective view showing a first embodiment of a shear crusher according to the present invention. FIG. 2 is a side sectional view of a main part of the shear crusher of FIG. FIG. 4 is a plan view and a front view of a main part shown in FIG. 2, respectively.
[0012]
In the figure, reference numeral 1 denotes a box-shaped crushing chamber provided on a machine base 2, and a hopper (not shown) into which general waste and industrial waste, which are to be processed (not shown), are charged. Is attached.
At the bottom of one side of the crushing chamber 1, there is provided a rectangular discharge port 3 for discharging the processed material sheared and crushed into small pieces, and the discharge port 3 is reversibly rotated by an electric motor or a hydraulic motor (not shown). The driven cylindrical rotor 4 is horizontally disposed.
On the outer periphery of the rotor 4, a number of mounting holes 5 are formed in an oval shape in plan view whose longitudinal direction is the rotation direction (indicated by arrows A and B in FIGS. 1 and 2). A plurality of strips 5 are arranged so as to form a zigzag shape in the circumferential direction of the rotor 4, and those adjacent to each other in the circumferential direction and some of the adjacent strips are adjacent in the axial direction when viewed from the circumferential direction. Are arranged as follows.
[0013]
Each of the mounting holes 5 is fitted with a holder 7 made of a single member holding one carbide chip 6 having a substantially square plate shape so that a part of one surface forms a cutting edge.
That is, the mounting hole 5 is connected to one end (the right end in FIGS. 2 and 3) of a V-shaped chip engaging groove 8 that engages with the lower half of the carbide chip 6. A holder 7 made of a single member having one surface and a parallel locking surface 9 is fitted and fixed to the bottom of the mounting hole 5 via two bolts 10 and 11. The holder 7 has a substantially square plate-shaped cemented carbide tip 6 whose one part forms a cutting edge, the lower half of which is engaged with the chip engagement groove 8 and the remaining one side is engaged. It is brought into contact with the stop surface 9 and is fixed to the holder 7 via a bolt 12 that penetrates the center thereof perpendicularly to one surface.
The upper portion of the holder 7 is naturally provided so as not to interfere with a cutting edge of a fixed blade described later.
At the bottom of the crushing chamber 1 facing the discharge port 3, a plate-shaped fixed blade 13 having a saw-shaped cutting edge that meshes with the cutting edge of each carbide tip 6 is flush with the bottom. It is provided horizontally.
[0014]
In FIG. 1, reference numeral 14 denotes a sieve mesh covering the discharge port 3 along the rotation trajectory of the carbide chip 6, 15 denotes a pusher provided so as to be able to advance and retreat with respect to the rotor 4 to press an object to be processed against the rotor 4, 16 denotes a sieve A receiving tank provided below the screen 14 stores the processed material that has passed through the sieve screen 14, and a lower portion thereof is connected to a screw conveyor 17 or another conveyor that discharges the processed material outside the machine. Is provided.
[0015]
In the above-mentioned shearing type crusher, the object to be processed introduced into the crushing chamber 1 from the hopper is moved to the bottom of the crushing chamber 1 as the rotor 4 rotates, and is pressed against the rotor 4 by the pusher 15, and each carbide When the chip 6 and the fixed blade 13 are gradually sheared and crushed by the shearing action and reach a desired size, they fall through the sieve mesh 14 into the receiving tank 16 and are discharged out of the machine by the screw conveyor 17 or the chute.
In the case of the above-mentioned shearing and crushing, if foreign matter such as metal is mixed in the object to be processed, the cemented carbide chip 6 is damaged and a force acts on the holder 7 to lift the front side in the rotor rotation direction. Is fitted in the mounting hole 5, so that the front peripheral wall of the mounting hole 5 prevents the front side of the holder 7 from lifting.
[0016]
Therefore, in the shearing type crusher having the above-described configuration, the falling off of the holder 7 from the rotor 4 can be significantly reduced.
Further, since the holder 7 is formed by a single member, the holder 7 can be easily attached to the rotor 4.
[0017]
FIG. 5 is a side sectional view of a main part showing a second embodiment of the shearing crusher according to the present invention, and FIGS. 6 and 7 are a plan view and a front view of the main part shown in FIG. 5, respectively.
[0018]
The shearing type crusher according to the first embodiment described above is different from the first embodiment in that one cemented carbide chip 6 having a substantially square plate shape is formed in each mounting hole 5 so that a part of one surface forms a cutting edge. While the holders 7 made of a single member held are fitted respectively, the two cemented carbide tips 18 each having a square plate shape are formed in each mounting hole 5 so that a part of one surface forms a cutting edge. Are respectively fitted to holders 19 made of two members which are arranged and held in the axial direction of the rotor 4.
That is, the two mounting holes 5 are provided at the front end in the rotation direction of the rotor 4 so as to be positioned within one plane in the axial direction of the rotor 4 and have the same shape and parallel to one surface of the two carbide tips 18. A main holder 19 a having a surface 20 is fitted to the rearmost half of the rotor 4 in the rotation direction, and is fixed to the bottom of the mounting hole via three bolts 21. A sub-holder 19b, which has two V-shaped chip engagement grooves 22 that engage with the lower half of the hard tip 18 and constitutes the holder 19 together with the main holder 19a, is provided in the remaining portion of the mounting hole 5. The holder 19 is fixed to the bottom of the mounting hole 5 via one bolt 23. The holder 19 has two square plate-shaped carbide pieces, one of which forms a cutting edge. The tip 18 has its lower half connected to the sub-holder 19b. The main holder 19 is connected to the main holder 19 via one bolt 24 which penetrates each central portion of the main holder 19a perpendicularly to the one surface. 19a.
The upper part of the main holder 19a of the holder 19 is naturally provided so as not to interfere with the cutting edge of the fixed blade 13.
Other configurations are the same as those of the above-described first embodiment, and therefore, the same components and the like are denoted by the same reference numerals and description thereof is omitted.
[0019]
Therefore, in the shearing type crusher having the above configuration, similarly to the first embodiment, the drop of the holder 19 from the rotor 4 can be significantly reduced.
Further, since the recess for accommodating the carbide tip 18 is formed by the chip engaging groove 22 of the sub-holder 19b and the engaging surface 20 of the main holder 19a, the formation of the accommodating recess, that is, It can be easily manufactured.
[0020]
FIG. 8 is a side sectional view of a main part showing a third embodiment of a shearing crusher according to the present invention, and FIGS. 9 and 10 are a plan view and a front view of the main part shown in FIG. 8, respectively.
[0021]
The shearing type crusher according to the first embodiment described above is different from the first embodiment in that one cemented carbide chip 6 having a substantially square plate shape is formed in each mounting hole 5 so that a part of one surface forms a cutting edge. While each of the holders 7 made of a single member held is fitted, each of the mounting holes 5 has a substantially square plate-shaped cemented carbide tip such that a part of one surface forms a cutting edge. 25 are respectively fitted with holders 26 each formed of two members.
That is, the mounting hole 5 is connected to one end (the right end in FIGS. 8 and 9) of a V-shaped chip engaging groove 27 that engages with the lower half of the carbide chip 25, A main holder 26a having a locking surface 28 parallel to one surface of the cemented carbide tip 25 is fixed to the bottom of the mounting hole 5 via two bolts 29, 30. A sub-holder 26b, which has a short columnar shape having the same cross-section as one surface and forms the holder 26 in cooperation with the main holder 26a, has one end face (the right end face in FIGS. 8 and 9) on which the main holder 26a is engaged. 28, the lower half is engaged with the chip engaging groove 27 of the main holder 26a, and is fixed to the bottom of the chip engaging groove 27 via one bolt 31. Has a cutting edge on one side A single piece of cemented carbide chip 25 having a substantially square plate shape engages the lower half with the chip engagement groove 27 of the main holder 26a, and the remaining one surface is the other end surface of the sub holder 26b (FIGS. 8 and 9). , And is fixed to the sub-holder 26b via a single bolt 32 that penetrates the center vertically to one side.
The upper parts of the sub holder 26b and the main holder 26a are provided so as not to interfere with the cutting edge of the fixed blade 13.
8 to 9, reference numeral 33 denotes a cutout surface formed by cutting out the front end of the main holder 26 a in parallel with the bottom surface of the mounting hole 5.
Other configurations are the same as those of the above-described first embodiment, and therefore, the same components and the like are denoted by the same reference numerals and description thereof is omitted.
[0022]
Therefore, in the shearing type crusher having the above-described configuration, falling off of the holder 26 from the rotor 4 can be significantly reduced as in the first embodiment.
Further, even when the sub holder 26 falls off and the bolt 31 is broken and remains on the main holder 26a, the recovery can be performed quickly by replacing the main holder 26a, so that the recovery time can be significantly reduced.
[0023]
In each of the above-described embodiments, the case where one rotor 4 is used has been described. However, the present invention is not limited to this, and two rotors may be provided side by side.
In this case, the fixed blade may be provided in the middle between both rotors, or may be provided outside each of both rotors.
Further, the rotor 4 is not limited to a columnar shape (including a cylindrical shape), but may be a regular polygonal column shape (including a regular polygonal cylindrical shape) such as a regular octagon and a regular dodecagon.
Further, the carbide tips 6, 18, and 25 are not limited to substantially square plate shapes or square plate shapes, but may be regular hexagonal, regular octagonal, circular, or elliptical plate shapes.
Furthermore, in the first and third embodiments, the number of the carbide tips 6, 25 held by the holders 7, 26 is not limited to one, but is two as in the second embodiment. On the other hand, in the second embodiment, the number of the carbide tips 18 held by the holder 19 is not limited to two, and may be one as in the first and third embodiments. Good.
[0024]
【The invention's effect】
As described above, according to the shearing type crusher of the present invention, even when a force such as lifting the front side is applied to the holder when foreign matter is caught, the front peripheral wall of the mounting hole prevents the front side of the holder. Since lifting is prevented, falling off of the holder can be significantly reduced as compared with the related art.
[0025]
On the other hand, the holder has a chip engaging groove that engages with the lower half of the cemented carbide tip, and has a locking surface connected to one end thereof and parallel to one surface of the cemented carbide tip. Since the holder is formed of a single member by being fixed to the bottom of the mounting hole through the bolt, the mounting to the rotor can be easily performed.
Further, the holder has a locking surface having the same shape and a parallel surface as one surface of the cemented carbide tip, is fitted to the majority of the mounting hole, and is fixed to the bottom of the mounting hole via a plurality of bolts. A holder and a sub-holder having a chip engaging groove engaged with a lower half portion of the carbide tip, fitted to the rest of the mounting hole, and fixed to the bottom of the mounting hole via one bolt; and Since the recess for accommodating the cemented carbide chip is formed by the chip engaging groove of the sub-holder and the locking surface of the main holder, the formation of the accommodating recess, that is, the manufacture of the holder is facilitated. Can be done.
Further, the holder has a chip engaging groove that engages with the lower half of the cemented carbide tip, and has a locking surface connected to one end thereof and parallel to one surface of the cemented carbide tip. The main holder is fixed to the bottom of the mounting hole via a bolt, and has a short columnar shape having the same cross-section as one side of the cemented carbide tip. The sub holder is engaged with the groove and is fixed to the bottom of the chip engaging groove via one bolt, so that even if the sub holder falls off and the bolt is broken and remains in the main holder, The replacement of the main holder enables an early recovery, so that the recovery time can be significantly reduced.
[Brief description of the drawings]
FIG. 1 is a partially broken perspective view showing a first embodiment of a shear crusher according to the present invention.
FIG. 2 is a side sectional view of a main part of the shearing crusher of FIG.
FIG. 3 is a plan view of a main part shown in FIG. 2;
FIG. 4 is a front view of a main part shown in FIG. 2;
FIG. 5 is a side sectional view of a main part showing a second embodiment of the shearing crusher according to the present invention.
FIG. 6 is a plan view of a main part shown in FIG. 5;
FIG. 7 is a front view of a main part shown in FIG. 5;
FIG. 8 is a side sectional view of a main part showing a third embodiment of the shearing crusher according to the present invention.
FIG. 9 is a plan view of a main part shown in FIG. 8;
FIG. 10 is a front view of a main part shown in FIG. 8;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Crushing chamber 3 Discharge port 4 Rotor 5 Mounting hole 6 Carbide tip 7 Holder 8 Chip engaging groove 9 Locking surface 10 Bolt 11 Bolt 13 Fixed blade 18 Carbide tip 19 Holder 19a Main holder 19b Sub holder 20 Locking surface 21 Bolt 22 Tip engaging groove 23 Bolt 25 Carbide tip 26 Holder 26a Main holder 26b Sub holder 27 Tip engaging groove 28 Locking surface 29 Bolt 30 Bolt 31 Bolt

Claims (4)

The rotor is disposed horizontally in a discharge port provided at the bottom of the crushing chamber, and a number of oval mounting holes whose longitudinal direction is the rotation direction are drilled on the outer periphery of the rotor. A plate-shaped fixed blade having a cutting edge fitted with a holder holding a plate-shaped carbide tip so that a portion forms a cutting edge, and having a cutting edge engaged with a cutting edge of each carbide tip at a bottom portion facing the discharge port. The shearing type crusher characterized by having a horizontal line. The holder has a chip engaging groove that engages with the lower half of the cemented carbide tip, and has a locking surface connected to one end thereof and parallel to one surface of the cemented carbide tip. The shearing type crusher according to claim 1, wherein the shearing type crusher is fixed to a bottom portion of the mounting hole via a bolt. A main holder having the same shape and parallel locking surface as one surface of the cemented carbide tip, being fitted to the majority of the mounting hole, and being fixed to the bottom of the mounting hole via a plurality of bolts; And a sub-holder having a chip engaging groove for engaging the lower half of the cemented carbide tip, fitted into the rest of the mounting hole, and fixed to the bottom of the mounting hole via one bolt. The shearing type crusher according to claim 1, wherein: The holder has a chip engaging groove that engages with the lower half of the cemented carbide tip, and has a locking surface connected to one end thereof and parallel to one surface of the cemented carbide tip. A main holder fixed to the bottom of the mounting hole via a bolt, and a short columnar shape having a cross section identical to one side of the cemented carbide tip; 2. The shearing type crusher according to claim 1, further comprising: a sub-holder which is engaged with the sub-holder and is fixed to the bottom of the chip engaging groove via one bolt.

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