JP2004154623A - Hammer crusher and hammer used therein - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily attach/detach a hammer of a hammer crusher quickly even if a hammer supporting shaft is not drawn out deliberately. <P>SOLUTION: This hammer crusher is constituted so that the object to be crushed is hit and crushed by hammers 10 which are arranged on a rotatable rotor 5, projecting in the radial direction and supported by hammer supporting shafts 12 arranged in parallel to the rotary shaft. A fitting hole 14 through which the shaft 12 is inserted is arranged on each hammer 10. Each hammer 10 is divided into a hammer main body 20 and a detaching attachment 21 which are abutted against each other on the divided surface 22 formed across the hole 14 and can be attached to/detached from each other. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hammer-type crusher and a hammer used for the same.
[0002]
[Prior art]
Bark, broken wood, and other wood debris (hereinafter referred to as “wood”) emitted from sawmills and the like can lead to air pollution and global warming if incinerated. It is supposed that various uses for recycling will be sought.
Under these circumstances, various types of pulverizers capable of pulverizing wood into chips have been proposed (for example, see Patent Documents 1 to 3). All of these known pulverizing devices are based on the principle of hitting and pulverizing wood with a rotating hammer.
[0003]
In the development of such a hammer-type crusher, there is a tendency to arrange a plurality of hammers in the direction of the rotation axis to increase the crushing efficiency (for example, see Patent Documents 4 and 5).
In order to form a structure in which a plurality of hammers are arranged in this manner, a plurality of rotor plates are provided in a skewered manner with respect to a rotating shaft driven to rotate. The outer peripheral portions of all these rotor plates are provided with axial through holes at predetermined intervals in the circumferential direction, and each of these axial through holes has a supporting shaft in a state parallel to the axis of the rotating shaft. Can be inserted in a skewered shape.
[0004]
When the support shaft is inserted into the shaft through-holes of these rotor plates, the root of the hammer is inserted in a skewered manner with one or two assignments between adjacent rotor plates.
That is, when viewed from the individual hammers, both sides thereof are arranged so as to be sandwiched between a pair of rotor plates, and the two rotators are swingable about a support shaft.
[0005]
[Patent Document 1]
JP 2002-113380 A [Patent Document 2]
JP 2001-276641 A [Patent Document 3]
JP-A-8-243419 [Patent Document 4]
JP 2000-61337 A [Patent Document 5]
See JP-A-9-123124
[Problems to be solved by the invention]
Among the hammer-type pulverizers, in the case of a structure in which a plurality of hammers are arranged in the direction of the rotation axis as described above, there is a case where attachment and detachment of the hammers is extremely troublesome.
The attachment and detachment of the hammer is required according to repair or replacement due to wear or breakage of the hammer, maintenance on the device side, and in some cases, change in the crushed particle size.
The reason why the attachment and detachment of the hammer is troublesome is that a support shaft holding the hammer is provided through a plurality of rotor plates and a plurality of hammers, and even if only one hammer is removed, the support shaft is removed. This is because it is almost necessary to pull out the entire length.
[0007]
When the support shaft is locally deformed (such as blistering), the support shaft cannot be pulled out, and the support shaft must be cut off in the middle. Needless to say, in such a case, an extremely serious adverse effect occurs in terms of work and cost, such as necessity of a new support shaft.
In addition, when the support shaft is pulled out, it is necessary to disassemble the casing covering the entire device.
In addition, these things are not a problem that occurs in a hammer-type crusher of a type in which a plurality of hammers are arranged side by side with respect to a support shaft, as long as the structure has a structure in which the support shaft supports the hammer. Every type was more or less happening.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in consideration of the above circumstances. An object of the present invention is to provide a crusher and a hammer used for the crusher.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has taken the following measures.
That is, the hammer-type crusher 1 according to the present invention is crushed by the hammer 10 provided in the radial direction through the support shaft 12 provided on the rotatable rotor 5 in parallel with the rotation axis thereof. It strikes and crushes things.
The hammer 10 is provided with a mounting hole 14 through which the support shaft 12 is inserted, and the hammer body 20 and the detachable attachment 21 are detachable from each other with a dividing surface 22 passing through the mounting hole 14 as a boundary. I have.
[0010]
The attachment and detachment of the hammer body 20 and the detachable attachment 21 may be performed by, for example, a bolt and a nut.
With such a configuration, by dividing the hammer main body 20 and the detachable attachment 21 in the hammer 10, the mounting hole 14 becomes a half-split state in each of the hammer main body 20 and the detachable attachment 21.
Therefore, if the hammer body 20 and the detachable attachment 21 are divided, these (that is, the hammer 10) can be removed from the support shaft 12, and thereafter, the support shaft 12 can be removed by the mounting hole 14 which is in a half-split state. If the hammer body 20 and the attachment 21 for attachment and detachment are connected to each other so as to be held therebetween, these (that is, the hammer 10) can also be attached to the support shaft 12.
[0011]
In these work processes, there is no need to perform any operation such as pulling out the support shaft 12.
Therefore, the hammer-type pulverizing device 1 according to the present invention can easily and quickly attach and detach the hammer 10.
It is preferable that the dividing surface 22 separating the hammer main body 20 and the detachable attachment 21 be provided along a direction in which the hammer 10 projects from the support shaft 12.
[0012]
That is, the hammer main body 20 and the attachment / detachment attachment 21 can have the same shape. Therefore, if the relative positions of the hammer body 20 and the detachable attachment 21 with respect to the support shaft 12 are interchanged, not only the hammer body 20 but also the detachable attachment 21 can be used as the hammer 10.
This has the effect of doubling the life of the hammer 10 and also has the effect of reducing the manufacturing cost as the hammer body 20 and the attachment / detachment attachment 21 can be used as parts in common. And is preferred.
[0013]
According to the present invention, a great effect can be obtained when a plurality of hammers 10 are provided side by side with respect to the support shaft 12. However, it is not necessarily limited to this.
On the other hand, the hammer 10 according to the present invention is provided with a mounting hole 14 at the root thereof for allowing the support shaft 12 to penetrate therethrough, and the hammer body 20 and the detachable attachment 21 are separated by a dividing surface 22 passing through the mounting hole 14. Are detachable from each other.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show one embodiment of a hammer type crusher 1 according to the present invention.
The crushing apparatus 1 has a casing 3 having a horizontal cylindrical cavity 2 therein, and a rotor 5 rotatable about a horizontal axis in the cavity 2 is provided.
The rotor 5 is configured to rotate integrally with a rotation shaft 7 driven by a motor 6. The rotor 5 has a plurality of rotor plates 8 along the axis of the rotating shaft 7.
[0015]
Each rotor plate 8 has a donut plate shape, and a plurality of hammers 10 are provided between adjacent rotor plates 8 at predetermined intervals along the circumferential direction.
In the outer peripheral portion of all the rotor plates 8, shaft through holes 11 are provided at regular intervals in the circumferential direction, and the support shafts 12 are provided in all the shaft through holes 11 in parallel with the rotation shaft 7. It is inserted like a skewer.
On the other hand, the hammer 10 is provided with a mounting hole 14 at the root thereof for allowing the support shaft 12 to pass therethrough. Therefore, assuming that the support shaft 12 is pierced into the shaft through hole 11 of each rotor plate 8, the mounting hole 14 of the hammer 10 is penetrated in a skewered manner in the middle part (between the adjacent rotor plates 8). Become.
[0016]
In each of the support shafts 12, the hammer 10 may be arranged between all the adjacent rotor plates 8, but in the present embodiment, the hammer 10 is located between the adjacent rotor plates adjacent to the position where the hammer 10 is provided. The hammer 10 is not provided. That is, the rotor plate 8 and the hammer 10 are not alternately arranged, but are arranged side by side with the rotor plate 8, the hammer 10, and the rotor plate 8, and then the rotor plate 8 is arranged with one empty space. 10 are arranged.
Therefore, as is apparent from FIG. 1, eight shaft through holes 11 are provided in the outer peripheral portion of the rotor plate 8, and if all the shaft through holes 11 have the support shafts 12 inserted therein, A total of four hammers 10 are provided on the rotor plates 8 (between the rotor plate 8 closest to the foreground and the second rotor plate 8 in FIG. 1) so as to form a cross in the circumferential direction. A total of four rotor plates 8 adjacent to the back (between the second rotor plate 8 and the third rotor plate 8) are arranged in an X-shape in the circumferential direction. The arrangement is such that the hammer 10 is provided.
[0017]
Each of the support shafts 12 may be formed of a rod material having both end portions having male screw ends. The rotor plates 8 are fixed to each other (the entire assembly as the rotor 5 is performed). The support shaft 12 can be formed by a bolt shaft.
The inner diameter of the mounting hole 14 provided in the hammer 10 is larger than the outer diameter of the support shaft 12 so that no rattling occurs. Therefore, each hammer 10 swings around the support shaft 12. It is freely held.
[0018]
From these facts, when the motor 5 rotates the rotor 5, each hammer 10 projects radially around the rotor 5 with centrifugal force and is supplied into the cavity 2 of the casing 3. An object to be ground (such as wood) is hit by each hammer 10 and ground.
The pulverized material is taken out downward through a screen 18 provided on the bottom side of the casing 3.
As shown in FIGS. 3 and 4, the hammer 10 employed in the hammer type crusher 1 according to the present invention can be divided into two parts by a dividing surface 22 passing through the mounting hole 14 as a boundary.
[0019]
Now, assuming that the rotor 5 rotates clockwise in FIG. 1, the hammer main body 20 is the one that is positioned on the front side in the rotation direction (the lower side in FIG. 3) of the two divisions. The rear side (upper side in FIG. 3) is the detachable attachment 21.
In the present embodiment, the dividing surface 22 separating the hammer body 20 and the detachable attachment 21 is provided along the direction in which the hammer 10 protrudes from the support shaft 12, and the hammer body 20 and the detachable attachment are provided. 21 have the same shape as each other.
[0020]
The hammer body 20 and the detachable attachment 21 are connected by a bolt 23 and a nut 24.
That is, the through hole 25 through which the bolt 23 can be inserted is provided in both the hammer body 20 and the detachable attachment 21.
The positioning and number of the through holes 25 are determined so that the bolts 23 cross a plurality of locations (three locations in the example) in the longitudinal direction of the dividing surface 22, and at least two locations are on both sides of the mounting hole 14. It is arranged to sandwich.
[0021]
As is clear from FIG. 4, the portion where the through-hole 25 is provided is slightly thicker in order to secure the strength, but the tip of the hammer body 20 and the attachment / detachment 21 (as described later). The portion that acts as the hammer 10) is slightly thinner for weight reduction.
With the hammer 10 having such a configuration, the hammer main body 20 and the detachable attachment 21 can be divided by loosening the bolts 23 and the nuts 24. At this time, the mounting holes 14 are provided in the hammer main body 20. And the attachment / detachment attachment 21 side is in a half-split state.
[0022]
Therefore, the hammer body 20 and the detachable attachment 21 can be removed in a divided state without having to pull out the support shaft 12 from the rotor 5.
By this removal, the hammer body 20 may be maintained or replaced.
After that, the hammer body 20 and the detachable attachment 21 are aligned so that the support shaft 12 can be sandwiched by the mounting hole 14 in a half-split state, and are connected by bolts 23 and nuts 24. Can be attached.
[0023]
Here, since the hammer main body 20 and the attachment / detachment 21 have the same shape, the attachment / detachment attachment 21 can be used as the hammer 10 by turning the relative position with respect to the support shaft 12 in the rotation direction. It becomes.
As described above, the hammer-type crushing device 1 according to the present invention can easily and quickly attach and detach the hammer 10.
As shown in FIGS. 5 and 6, in the hammer 10, the dividing surface 22 is formed so as to divide the radially protruding side of the hammer 10 from the root side with the center of the mounting hole 14 as a boundary, You may make it the front side be the hammer main body 20, and let the root side be the detachable attachment 21.
[0024]
In this case, the attachment / detachment of the hammer body 20 and the attachment / detachment 21 is performed by a bolt 23 and a nut 24 as shown in FIG. 5, or a female screw hole provided on the bolt 23 and the hammer body 20 as shown in FIG. 26.
Incidentally, the present invention is not limited to the above-described embodiment, and can be appropriately changed according to the embodiment.
For example, the shape of the hammer 10, the number of the attached hammer 10, the detailed structure of the rotor 5, and the like can be variously changed.
[0025]
【The invention's effect】
As is clear from the above description, the hammer-type pulverizer according to the present invention and the hammer used therein can easily and easily attach and detach the hammer without having to pull out the support shaft that supports the hammer. It can be done quickly.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view taken along line AA of FIG.
FIG. 2 is a side sectional view showing one embodiment of a hammer type crusher according to the present invention.
FIG. 3 is a front view showing a hammer employed in the hammer type crusher of FIG. 2;
FIG. 4 is a view taken in the direction of arrows BB in FIG. 3;
FIG. 5 is a main part front view showing another example of the hammer.
FIG. 6 is a main part front view showing still another example of the hammer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hammer type crusher 5 Rotor 10 Hammer 12 Support shaft 14 Mounting hole 20 Hammer main body 21 Attachment / detachment 22 Division surface

Claims (4)

A hammer that strikes and grinds a material to be ground by a hammer (10) provided in a protruding shape in a radial direction via a support shaft (12) provided on a rotatable rotor (5) in parallel with a rotation axis thereof. In the mold crusher,
The hammer (10) is provided with a mounting hole (14) through which the support shaft (12) is inserted. The mounting hole (14) is separated from the hammer body (20) by a dividing surface (22) passing through the mounting hole (14). A hammer-type crusher, characterized in that the attachment (21) is detachable from the crusher. A dividing surface (22) for separating the hammer body (20) from the attachment / detachment (21) is provided along a direction in which the hammer (10) projects from the support shaft (12). (20) and the attachment / detachment (21) have the same shape, and the attachment / detachment (21) is also changed by exchanging the relative positions of the hammer body (20) and the attachment / detachment (21) with respect to the support shaft (12). The hammer-type crusher according to claim 1, characterized in that it can be used as a hammer (10). The hammer-type crusher according to claim 1 or 2, wherein a plurality of hammers (10) are provided in parallel on the support shaft (12). A hammer for a hammer-type crusher provided with a mounting hole (14) for penetrating a support shaft (12) in a root portion, wherein the hammer is divided by a dividing surface (22) passing through the mounting hole (14). A hammer-type crusher and a hammer used for the same, wherein the main body (20) and the detachable attachment (21) are detachable from each other.

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