JP2002346418A - Wood crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wood crusher in which screen member can be easily replaced. SOLUTION: The wood crusher is provided with a crushing unit 16 with a crushing rotor 23 for crushing of material to be crushed, a stay 30 prepared on the outer circumference of the crushing unit 16, a screen member 29 which is equipped at the internal circumference of the stay 30 and is possible to be put in and out along the direction of the shaft of the crushing roter 23, an opening part for putting in and out of the screen member 29, and a moving mechanism 39 to move the screen 29 held by the stay 30 to a part close to the opening 18, and the opening part 18 is prepared at a position having no interference with the bearing 25 of the crushing rotor 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood crusher for crushing pruned and thinned wood, branch timber, waste wood, etc., for example, a crusher for rotating a crushing rotor to crush a material to be crushed. It is about.

[0002]

2. Description of the Related Art For example, pruned timber and thinned wood generated when pruning timber cut down in forests, timber produced during development and maintenance of green spaces, and waste wood used in wooden houses Is usually ultimately disposed of as industrial waste. The wood crusher transports the timber, timber, etc. in order to reduce the volume of waste in the waste treatment process, or to ferment the crushed material and reuse it as organic fertilizer. Before crushing, it is crushed to a predetermined size at the work site.

As this kind of wood crusher, for example, as disclosed in Japanese Patent Application Laid-Open No. H11-42439, a rotary crusher having a crushing bit (rotary blade) provided on an outer peripheral portion thereof is provided. Some include a crushing device and a sieve member (discharge screen) provided on the outer peripheral side of the crushing rotor.

In this prior art, the crushed object is crushed by a crushing bit of a crushing rotor, and the crushed material is finely crushed to a size smaller than the opening area of a plurality of openings of a sieve member on the outer periphery of the crushing rotor. It is discharged outside through the opening.

[0005]

The above-mentioned prior art has the following problems.

In the above prior art, as described above,
Since the crushed wood is discharged to the outside when crushed to a size equal to or less than the opening area of the sieve member, the particle size of the crushed wood is substantially determined by the opening area. Therefore, in order to adjust the particle size range of the crushed wood, it is necessary to prepare in advance a plurality of types of sieve members having different opening areas of the openings, and replace them appropriately.

However, in the above prior art,
No particular consideration is given to the replacement of the sieve member as described above,
Since the sieving member has a fixed structure, it has been extremely difficult to replace the sieving member for adjusting the particle size.

[0008] The present invention has been made based on the above-mentioned matters, and an object of the present invention is to provide a wood crusher capable of easily replacing a sieve member.

[0009]

(1) In order to achieve the above object, a wood crusher according to the present invention is provided with a rotary crusher for crushing an object to be crushed and an outer peripheral side of the crusher. Sieving member holding means, on the inner periphery of the sieving member holding means,
A sieve member provided so as to be removable in the axial direction of the crushing device.

In the present invention, for example, the crushed material is crushed by a rotary crusher equipped with a crushing rotor, and the crushed material is discharged to the outside through a plurality of openings of a sieve member on the outer peripheral side of the crushing rotor. Is done. In this case, since the particle size of the crushed material is substantially determined by the opening area of the sieve member, it is necessary to appropriately replace a plurality of types of sieve members having different opening areas in order to adjust the particle size of the crushed material.

Therefore, in the present invention, the sieve member is held on the inner peripheral portion of the sieve member holding means, and the sieve member has a structure capable of being withdrawn and inserted in the axial direction. Specifically, for example, an opening for insertion and removal is provided at a position that does not interfere with the bearing of the crushing rotor, and a moving mechanism that moves the sieving member held by the sieving member holding means to a position near the opening is provided. Thereby, the sieve member can be exchanged by removing and inserting the sieve member from the axial direction of the crushing device (crush rotor) through the opening while avoiding the bearing portions located at both ends in the axial direction of the crushing rotor. .

At this time, for example, if the sieve member held by the sieve member holding means is to be pulled out (or pushed in) upward or downward along the outer periphery of the crushing rotor, the sieve member is moved in an arc-shaped direction. Since the sieve member is pulled out (or pushed in) by applying force, the resistance is large and the labor of the worker is large. In addition, when the holding of the sieve member holding means is released and the sieve member is to be removed in the radial direction, since a large amount of crushed material remains on the radially outer side of the sieve member, it is necessary to perform a separate cleaning. In addition, since the operator must support the weight of the sieve member, very large labor is required. In the present invention, when the sieve member is pulled out (or pushed) by applying a force in a linear direction by pulling out (or pushing in) the sieve member by pulling it out or replacing it while holding the sieve member holding means as described above, the sufficient resistance can be obtained. Is relatively small, and no labor is required for supporting and cleaning the sieve member by its own weight. Therefore, the sieve member can be easily replaced unlike the above case.

(2) In order to achieve the above object, a wood crusher according to the present invention has a crushing device having a crushing rotor for crushing an object to be crushed, and a sieve member holding means provided on an outer peripheral side of the crushing device. A sieve member provided on an inner peripheral portion of the sieve member holding means so as to be removable in the axial direction of the crushing rotor, and an opening provided for the insertion and removal of the sieve member.

(3) In the above (2), preferably,
The opening is provided at a position that does not interfere with the bearing of the crushing rotor.

(4) In the above (2) or (3), preferably, a moving mechanism is provided for moving the sieve member held by the sieve member holding means to a position near the opening.

(5) In the above (2) to (4), preferably, a door which can be attached or detached or opened and closed is provided in the opening.

(6) In the above (1) to (5), preferably, the sieve member has a structure capable of being divided into a plurality of pieces in the axial direction of the crushing device. Thus, for example, by providing openings on both sides in the axial direction, the divided pieces of the sieving member can be inserted and removed from the closer one of the openings, and can be more easily replaced.

(7) In the above (1) to (6), preferably, the sieving member is made of high-tensile steel.
As a result, the thickness of the sieving member can be reduced while ensuring sufficient strength. Therefore, the sieve member can be replaced more easily by reducing the weight, and the productivity of the crushed material can be improved by improving the passage property of the crushed material.

(8) In order to achieve the above object, according to the present invention, there is provided a main body frame, a traveling means provided on the main body frame, and a crushing bit provided on the main body frame at an outer peripheral portion. A rotary crushing device provided with a crushing rotor, a sieve member holding means provided on an outer peripheral side of the crushing device, and an inner peripheral portion of the sieving member holding means are provided so as to be able to be inserted and removed in the axial direction of the crushing rotor. A sieve member, provided on one side of the main body frame with respect to the crushing device,
Conveying means for conveying the wood to be crushed to the crushing device, pressing and introducing means disposed above the conveying means, and extending from a position below the crushing device to the outside of the other side of the main body frame with respect to the crushing device. And a carry-out conveyor.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the wood crusher of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the entire structure of an embodiment of the wood crusher of the present invention, and FIG. 2 is a top view of the embodiment of the wood crusher of the present invention shown in FIG. In these FIGS. 1 and 2,
This wood crushing machine is a self-propelled self-propelled wood crushing machine. 1 is a crushing machine equipped with a hopper 2, a feed conveyor (conveying means) 3, a crushing unit 4, and a pressing conveyor (pressing and introducing means) 5. The machine body, 6 is a traveling body provided below the crusher body 1, 7 is a carry-out conveyor (discharge conveyor), 8 is a magnetic separator, and 9 is a power unit as a power body.

FIG. 3 (a) is a front view as viewed from the direction A in FIG. 1, and FIG. 3 (b) is a rear view as viewed from the direction B in FIG. 3A and 3B, the traveling body 6 includes a main body frame 10 and a traveling device 11 provided below the main body frame 10. The main body frame 10 is formed of, for example, a substantially rectangular frame, and includes the crushing unit 4, the hopper 2, and the power unit 9.
And the like, and a truck frame 10B provided below the crusher attachment 10A.

Returning to FIG. 1 and FIG.
Is a drive wheel 12a and an idler 12b rotatably supported by the track frame portion 10B, an endless track crawler belt 13 extending between the drive wheels 12a and the idler 12b, and left and right running provided on the drive wheel 12a side. Hydraulic motor 14.

The crushing unit 4 is mounted substantially at the center in the front-rear direction of the main frame crusher mounting portion 10A. FIG. 4 is a partially enlarged side view in FIG. 1 showing a structure near the crushing unit 4, and FIG. 5 is a partially transparent side view of the structure shown in FIG. 4 and 5, reference numeral 15 denotes the main body frame crusher mounting portion 10;
Reference numeral 16 denotes a base unit attached to A, and 16 denotes a crushing device. The base 15 is provided with a bottom plate 1 provided at its lowermost part.
5a and side plates 15 erected on the left and right sides on the bottom plate 15a
b. The bottom plate 15a is provided with a through hole (not shown) for inserting the bolt 17, and the bottom plate 15 is formed by using the bolt 17 inserted into the through hole.
a is fastened and fixed to the main body frame crusher mounting portion 10A.

The side plate 15b is provided with a crushing rotor 23 described later.
An opening 18 is provided at a position that does not interfere with the bearing of the crushing device 16 in the axial direction of the crushing device 16 (see FIG. 11 described later). This opening 18 is formed from a substantially rectangular shape to the front side of a self-propelled timber crusher (FIG. 11).
(Middle left) The upper part (the side of the crusher 16) is cut out (shape cut along the upper surface of the sieving member 29 described later). Further, the opening 18 allows a necessary and sufficient opening for inserting and removing the sieve member 29 in the axial direction of the crushing device 16 when the sieve member 29 described below is moved by the moving mechanism 39 described later. Forming a space.

Reference numeral 19 denotes a cover for closing the opening 18, which comprises an upper cover 19a, a lower cover 19b, and fixing bolts 19c, and is detachably fixed. These upper and lower covers 19a and 19b
Is provided with through holes (not shown) for inserting fixing bolts 19c at both ends in the front-rear direction of the self-propelled wood crusher. That is, the upper and lower covers 19a and 1
9b is a threaded hole (not shown) of the seat plate 20 which is provided on the side plate 15b with the fixing bolt 19c inserted through the through hole.
Is fixed to the seat plate 20.

The crushing device 16 is a rotary type uniaxial crushing device (in this example, a so-called impact crusher), and includes a crushing bit 21 (a crushing outer diameter R is indicated by an imaginary line; a hitting plate may be used) as a blade. A rotor (crushing rotor) 23 having a fixture 22 for fixing the crushing bit 21 attached to an outer peripheral portion is provided. At this time, the crushing bit 21 is arranged such that the blade surface thereof corresponds to the rotation of the crushing rotor 23 in the normal rotation direction (the direction of the arrow A in FIG. 5). Reference numeral 24 denotes an anvil (secondary crushing plate, repulsion plate) fixed to the outer peripheral side of the crushing device 16 (specifically, the outer peripheral side of the crushing rotor 23). In this example, 24a, 2
4b and 24c are provided.

The crushing rotor 23 has a rotating shaft 23a.
Are rotatably supported by bearing mechanisms 25, 25 provided on the left and right side plates 15b, 15b.
These bearing mechanisms 25 are mounted on the outer side of each side plate 15b in the width direction of the self-propelled wood crusher, and the intermediate member 27 is mounted on a support base 26 provided on the base bottom plate 15a.
And is supported via In addition, these bearing mechanisms 25
The hydraulic motors 28 for the crusher are provided on the outer peripheral side of the crusher (see FIGS. 1 and 2), and the drive shaft (not shown) of the crusher rotor 23 is connected to the drive shaft (not shown) via a coupling (not shown). The rotating shaft 23a is connected.

On the outer peripheral side of the crushing rotor 23, a substantially cylindrical cylindrical sieving member (see FIG. 6 (b) described later) provided with a large number of openings 29b for setting the particle size of the crushed material. Greater) 29 is supported on the inner peripheral side (inner peripheral portion) by a support member 30, and is appropriately divided into a plurality (two in this embodiment) in the circumferential direction of the crushing rotor 23. FIG. 6A is a side view of one piece of the sieving member 29 viewed from the side in the width direction of the self-propelled wood crusher. FIG. 6B is viewed from the direction C in FIG. 6A. FIG. 3 is a development view of the sieving member 29. 6 (a) and 6 (b), the sieve member 29 includes a plate portion 29a having a substantially partial cylindrical shape made of, for example, high-strength steel, and the plate portion 29a.
A large number of openings (through holes) 2, for example, circular plate portions 29 a provided so as to penetrate in the radial direction of the crushing rotor 23.
9b, and a handle portion 29c used when a sieving member 29 described later is inserted and removed in the axial direction of the crushing rotor 23.

FIG. 7A is a plan view of the support member 30 as viewed from vertically above (direction D in FIG. 5).
FIG. 7B is a side view of the support member 30 as viewed from a direction indicated by an arrow E in FIG. 7A and 7B, the support member 30 includes curved frame portions 30b1 and 30b2 and a straight frame portion 30a.
It is a member that constitutes a substantially partially cylindrical skeleton as a whole.

The above-mentioned curved frame portions 30b1 and 30b
2 is the sieve member 29 in the circumferential direction of the crushing rotor 23.
Along the axis, the crushing rotor 23 is bent at appropriate places in the axial direction (five places in this embodiment). Among these curved frame portions 30b1 and 30b2, the curved frame portion 30b2 is a bracket 30b2B provided with a through hole 30b2A at an end on the front side (left side in FIGS. 7A and 7B) of the self-propelled wood crusher. The through hole 3 is provided at the end of the rear side of the self-propelled wood crusher (the right side in FIGS. 7A and 7B).
A bracket 30b2D provided with 0b2C is fixed in a substantially horizontal direction by, for example, welding. 30b
No. 1 does not have these brackets.

In this embodiment, curved frame portions are provided at both ends and the center of the support member 30 in the axial direction of the crushing rotor 23 (the vertical direction in FIG. 7A or the vertical direction in FIG. 7B). The curved frame portion 30b2 is disposed at substantially the center of each of the three curved frame portions 30b1.

The aforementioned 30a is the curved frame portion 30.
b1 and 30b2, the axis direction of the crushing rotor 23 (the vertical direction in FIG.
(B) In the direction perpendicular to the inner surface of the sheet), it is appropriately extended along the sieve member 29 at three places (three places in this embodiment).

Returning to FIG. 5, a side wall 32 is erected on the crusher mounting portion 10A of the main body frame via a steel material 31. On the side wall 32, a pair of brackets 33, 33 on both sides in the width direction of the self-propelled timber crusher are attached to the side walls 32 through attachments 33a, 33a fixed by welding, for example. Curved frame part 30b
2, and 30b2, are fixed in a substantially horizontal direction. That is, the pins 34, 34 are inserted through and connected to through holes (not shown) of the brackets 33, 33, so that the support member 30 is rotatably supported using the pins 34 as a rotation axis. (See also FIG. 7 (a)).

At this time, an intermediate plate 15c is extended between the side plates 15b, 15b with the longitudinal direction being substantially horizontal, and a bolt is attached to the intermediate plate 15c behind the crushing rotor 23 behind the self-propelled wood crusher. The gantry 35 fixed via the nut 15c1 and the nut 15c2 is installed. This stand 35
Are the middle plate 15c, the bolt 15c1, and the nut 15c.
2, a top plate 35b installed in a substantially horizontal direction above the side plate 35a, and the side plate 3
Reinforcement plate 3 installed perpendicular to 5a and upper surface 35b
5c.

On the top surface 35b of the gantry, suspension bolts 36, 36 are provided at positions corresponding to the brackets 30b2D, 30b2D in the width direction of the self-propelled wood crusher (perpendicular to the plane of FIG. 5). The self-propelled wood crusher is suspended and supported by 37 so that it can swing in the front-rear direction. The support mechanism 37 supports the hanging bolt 36 so as to be rotatable clockwise and counterclockwise.
a pins 37b, 37b protruding from both sides of the self-propelled timber crusher in the width direction of the support 37a;
For example, a U-shaped left / right mount 37c that supports the mounts b and 37b with respect to the mount upper surface 35b.

At this time, 38 and 38 are screw holes 38
a, 38a are cylindrical shafts provided in a direction perpendicular to the axial direction thereof, and the threaded holes 38a, 38a are screwed with the hanging bolts 36, 36 (see FIG. 7A). . The shafts 38, 38 are inserted into the through holes of the brackets 30b2D, 30b2D of the support member 30 described above, whereby the shaft 38 rotates the hanging bolt 36 and the support member 30 relative to each other. They are connected while allowing displacement.

With the above structure, the support member 3
0, bracket 33, suspension bolt 36, support mechanism 37,
The shaft 38 constitutes a moving mechanism 39 for moving the sieving member 29 to the vicinity of the opening 18, and its detailed operation will be described later.

Returning to FIGS. 1 and 2, the feed conveyor 3 is mounted on the front side of the self-propelled wood crusher with respect to the crusher 16 in the intermediate frame 40 provided on the main frame crusher mounting portion 10A. The hopper 2 extends substantially horizontally in a lower portion of the hopper 2. The feed conveyor 3 is, for example, a sprocket-like drive roller (hereinafter, appropriately referred to as a feed roller) 41 provided at the end of the crusher 16 (the rear side of the self-propelled wood crusher) (see also FIG. 5).
And a driven roller 42 provided on the opposite side (front side of the self-propelled wood crusher), and a conveyor (conveyor belt) 4 provided between the feed roller 41 and the driven roller 42.
3 is provided. Reference numeral 44 denotes a feed conveyor cover for preventing leakage of crushed objects provided on both sides in the width direction of the self-propelled wood crusher over substantially the entire length of the feed conveyor 3, and is provided upright on the intermediate frame 40. I have.

FIG. 8 is a partially cutaway sectional view taken along plane VIII-VIII in FIG. In FIG. 8 and FIG. 5 described above, the carrier 43 is located on both the left and right sides in the width direction of the self-propelled timber crusher, and is rotatable by connecting a number of link members 45 via pins 46. (Endless) links 47 articulated with the endless links 47, 4
7 are fixed so as to be connected in the width direction of the self-propelled timber crusher and are arranged in the conveying direction of the crushed wood.
8 is provided. 49 is the intermediate frame 4
0 is a bearing mechanism that is supported via a support member 50 and supports both ends of the rotation shaft 41a of the feed roller 41. Reference numeral 51 denotes a right side of the wood crusher of the feed roller rotation shaft 41a (the upper side in FIG. 2). ) Is a hydraulic motor for a feed conveyor connected to the rotating shaft 41 a further in the width direction outside than the bearing mechanism 49. At this time, the bearing mechanism 5 supporting the rotation shaft (not shown) of the driven roller 42
2 (see FIG. 1) is configured to be displaceable in a substantially horizontal direction by a known tension adjusting mechanism 53, whereby the tension of the transport body 43 can be adjusted.

Returning to FIGS. 1 and 2, the press conveyor 5 is provided above the rear end of the intermediate frame 40 (in other words, above the feed conveyor 3). FIG. 9 is a partially enlarged view of FIG. 1 showing a detailed structure of the presser conveyor 5 in a partial cross section (however, a drive roller 55, a driven roller 54, and a part of a slider 70 which will be described later are illustrated for clarity of the structure. 10 is omitted from FIG.
It is a cross-sectional view by a middle XX cross section.

9 and 10, the holding conveyor 5 is provided with a sprocket-shaped driven roller 54 (hereinafter referred to as appropriate) provided above the feed conveyor 3 and near the crushing device 16 (specifically, at the end of the crushing device 16 side). , The press roller)
And a sprocket-shaped drive roller provided on the opposite side (the front side of the wood crusher, the introduction side of the crushed material) and having a diameter larger than that of the pressing roller 54 (hereinafter, appropriately referred to as an introduction roller).
55, and a conveyance body (conveyor belt) 56 wound and provided between the introduction roller 55 and the press roller 54.

The transporter 56 has substantially the same structure as the transporter 43 of the feed conveyor 3 and is located on the left and right sides in the width direction of the self-propelled wood crusher. And two endless links 59 which are rotatably articulated by a connection through the endless link and are connected between the endless links 59 in the width direction of the self-propelled wood crusher. And a plurality of transport plates 60 fixed and arranged in the transport direction of the crushed wood.

Reference numeral 61 denotes the introduction rollers 55, 55.
Are hydraulic motors for presser conveyors, which are respectively housed and arranged on the radially inner peripheral side.

FIG. 11 is a cross section taken along the XIA-XIA section in FIG. 9 and the left half is a cross section taken along the XIB-XIB section in FIG. In FIG. 11 and FIG. 10 described above, the presser conveyor hydraulic motor 61 includes a support member 62 attached to an insertion portion 70b of a slider 70 described later.
Is fixed to the side wall 63a of the bracket body 63 provided on the inner side of the transport body 56 and substantially in the width direction (the introduction roller 5).
5, it is arranged so as to be within its axial direction (vertical direction in FIG. 9, horizontal direction in FIG. 10). Large-diameter driving force output portion 61a of the presser conveyor hydraulic motor 61
Is located axially inward of the substantially cylindrical portion 61b.

At this time, the sprocket-shaped introduction roller 55 is attached to the substantially annular mounting portion 55a fixed to the driving force output portion 61a of the presser conveyor hydraulic motor 61.
And a saw-toothed portion 55bA that is located axially outside of the mounting portion 55a and on the outer peripheral side of the presser-conveyor hydraulic motor substantially cylindrical portion 49b, and is provided at its outermost periphery with the endless link 47. A disk-shaped outer peripheral portion 55b and a substantially cylindrical intermediate portion extending in the axial direction on the outer peripheral side of the hydraulic motor for presser conveyor approximately cylindrical portion 61b so as to connect the mounting portion 55a and the outer peripheral portion 55b. A portion 55c.

The sprocket-shaped holding roller 5
4 is a rotating shaft 54a supported by bearings 64, 64
The bearings 64 are fixed to a connecting member 65 provided on the slider insertion portion 70b on the side opposite to the support member 62 via an annular plate 66. These holding rollers 54 are also provided with the introduction rollers 55.
Similarly, it is arranged on the inner peripheral side of the transport body 56 so as to be substantially within the width dimension.

The press conveyor 5 is slidable up and down by a press conveyor support mechanism 67. In FIG. 8 described above, the holding conveyor support mechanism 67 extends in a substantially vertical direction, and is provided with a bracket 68 provided near the end of the intermediate frame 40 on the side of the crushing device 16.
And a pair of left and right hydraulic cylinders 69, 69 having one end (lower end) connected to the other, and bracket portions 70a connected to the other ends (upper ends) of the hydraulic cylinders 69, 69, at both left and right end portions. A slider 70 slidably arranged in a vertical direction while expanding and contracting the hydraulic cylinders 69.
And

The slider 70 is disposed in a substantially horizontal direction and is inserted into the inner periphery of the carrier 56. The insertion portion 70b has a substantially cylindrical shape, and is fixed to both the left and right ends of the insertion portion 70b. A pair of left and right vertical beam portions 70c, 70c extending substantially vertically, and the vertical beam portions 70c, 70c,
The brackets 70a, 70a provided so as to protrude outwardly in the width direction of the self-propelled timber crusher from the upper end of the vertical beam portions 70c, 70c. And a horizontal beam portion 70d arranged in a substantially horizontal direction.

With the above-described structure, the slider 70 and the holding conveyor 5 can be integrally slidably moved in the vertical direction (in other words, advance and retreat with respect to the feed conveyor 3). The pressing pressure of the crushed material and the conveyance body 43 of the feed conveyor 3
The gap size between the presser 5 and the conveyor 56 can be appropriately set.

Returning to FIGS. 1 and 2, the hopper 2 is
It is attached to the intermediate frame 40 via a support member 71 in a substantially horizontal direction. 2a is a side wall at the front end of the self-propelled wood crusher, and 2b and 2b are side walls on both sides (left and right) in the width direction of the self-propelled wood crusher.
The side walls 2b on both sides in the width direction are located on the front side of the self-propelled wood crusher (the left side in FIGS. 1 and 2) and are located on the upper side of the front part of the self-propelled wood crusher of the feed conveyor 3. The crushed material input section 2bA to be crushed and the self-propelled wood crusher located on the rear side (right side in FIGS. 1 and 2) of the crushed material input section 2bA, And a presser conveyor cover 2bB located on the upper side of the rear side and the side of the presser conveyor 5.

An expanding portion (opening portion) 2c having an expanding shape is provided upward at the upper portion of the crushed material input portion 2bA, so that the crushed material can be conveniently supplied.

The presser conveyor cover 2bB is connected to the rear side of the self-propelled wood crusher from the crushed material input section 2bA so as to be substantially flush with each other, in the width direction of the presser roller 54 of the presser conveyor 5. A press roller storage section 72a facing both ends with a small gap, and a press roller storage section 7;
2a, a slider storage portion 72b which is provided on the rear side of the self-propelled wood crusher so as to protrude in the width direction of the self-propelled wood crusher and faces the slider vertical beam portion 70c of the holding conveyor support mechanism 67 via a slight gap. A pressing roller storage portion 72c is provided on the rear side of the self-propelled wood crusher from the slider storage portion 72b and faces both ends in the width direction of the pressing roller 54 of the pressing conveyor 5 through a small gap. Then, as shown in FIG. 2, the crushed object charging section 2bA, the pressing roller storage section 72a, and the driven roller storage section 72c are arranged so as to be substantially in a straight line. The distances between the sections 2bA and 2bA, the left and right pressing roller storage sections 72a and 72a, and the left and right driven roller storage sections 72b and 72b are all substantially equal.

In FIG. 8, reference numeral 73 denotes a crushed object guide which is provided obliquely near a connection portion between the lower end of the slider housing portion 72b and the upper end of the feed conveyor cover 44, as described above. The object to be crushed is prevented from protruding outside the width direction of the conveying body 43 of the feed conveyor 3 and leaking out in the slider accommodating portion 72b whose size in the width direction of the wood crusher is slightly increased.

Returning to FIGS. 1 and 2, the unloading conveyor 7 is provided on the discharge side (the rear side of the self-propelled wood crusher, FIGS. 1 and 2).
The middle right portion is suspended and supported by support members 75 and 76 on an arm member 74 (not shown in FIG. 2) provided to protrude from the power unit 9. Also,
The portion on the opposite side of the discharge (the front side, the left side in FIGS. 1 and 2) is located below the main body frame crusher mounting portion 10A, and supports the main body frame crusher mounting portion 1 via the support member 77.
It is supported so as to be suspended from 0A. As a result, the unloading conveyor 7 passes from below the main body frame 10 to below the power unit 9 to the outside of the self-propelled wood crusher of the main body frame 10 with respect to the crushing device 16 (outside the crusher main body 5). , And are arranged to extend upward.

Reference numeral 78 denotes a frame, 79 denotes drive wheels supported by the frame 78, and 80 denotes the drive wheels 7
9, a hydraulic motor for unloading conveyor (see FIG. 2),
Reference numeral 81 denotes a conveyor belt wound and provided between the driving wheel 79 and a driven wheel (not shown). Reference numerals 82 and 83 denote guide rollers and rollers for supporting both side surfaces and a conveying surface of the conveyor belt 81, respectively. is there. Reference numeral 84 denotes a known tension adjusting mechanism that enables a bearing mechanism (not shown) that supports the rotating shaft of the driven wheel to be displaced in a substantially horizontal direction, thereby enabling the tension of the conveyor belt 81 to be adjusted. ing.

The magnetic separator 8 is suspended from and supported by the arm member 74 via a support member 85, and is disposed above the conveyor belt 81 so as to be substantially perpendicular thereto. Magnetic force generating means,
And a hydraulic motor 87 for a magnetic separator.

The power unit 9 is mounted above a rear end (right side in FIGS. 1 and 2) of the self-propelled wood crusher of the body frame crusher mounting portion 10A via a power unit loading member 88. A driver's seat 89 is provided on the left front side.

Here, the feed conveyor 3 and the crusher 1
6, the holding conveyor 5, the unloading conveyor 7, the magnetic separator 8, the traveling device 11, and the holding conveyor support mechanism 67 constitute a driven member driven by a hydraulic drive device provided in the self-propelled wood crusher. These are the hydraulic motor 51 for the feed conveyor, the hydraulic motor 27 for the crusher,
Various hydraulic actuators such as a presser conveyor hydraulic motor 61, an unloading conveyor hydraulic motor 80, a magnetic separator hydraulic motor 87, a left / right traveling hydraulic motor 14, and a hydraulic cylinder 69 for raising and lowering the slider, and the power unit 9. It is driven by a hydraulic drive device including an mounted engine (not shown), at least one hydraulic pump (not shown) driven by the engine, and a plurality of control valves (not shown).

The hydraulic pump and the engine (only the upper cover 90 is shown in FIG. 2) are provided in the power unit 9 together with a heat exchanger device (not shown) having a radiator for cooling the engine cooling water. In the region on the rear side (right side in FIG. 2) of the self-propelled timber crusher, they are juxtaposed in the width direction of the self-propelled timber crusher (vertical direction in FIG. 2, short-side direction of the main body frame 10). . On the other hand, in the area on the front side (left side in FIG. 2) of the self-propelled wood crusher of the power unit 9, the fuel tank of the engine (only the fuel supply port 91 is shown in FIG. 2) and the hydraulic actuators are driven. A hydraulic oil tank for storing pressurized oil (hydraulic oil) (only the oil supply port 92 is shown in FIG. 2), a control valve device (not shown) having the above-described control valves, and a compartment where an operator rides The driver's seat 89 is arranged side by side in this order from the right side (upper side in FIG. 2) in the width direction of the self-propelled wood crusher to the left side (lower side in FIG. 2).

The components of the power unit 9 described above are arranged on a power unit frame 93 (see FIG. 1) which forms a basic lower structure of the power unit 9, and the power unit frame 93 is mounted on the power unit loading member 88 (see FIG. 1). 1) is mounted on the upper portion of the rear end of the main frame crusher mounting portion 10A.

In the above, the support member 28 constitutes a sieve member holding means provided on the outer peripheral side of the crushing device described in the claims, and the sieve member 29 is crushed on the inner peripheral portion of the sieve member holding means. A sieve member is provided so as to be removable in the axial direction of the device, and the cover 19 is a removable door provided at the opening.

Next, the operation and operation of the embodiment of the wood crusher of the present invention will be described below.

(1) Self-propelled operation When the self-propelled timber crusher is self-propelled, the operator operates the left / right operation lever 94 of the driver's seat 89, and the left / right operation is performed in accordance with the operation. The traveling control valve (not shown) is switched, and the pressure oil from the hydraulic pump is supplied to the left and right traveling hydraulic motors 14 via the left and right traveling control valves (not shown), whereby The crawler track 13 is driven and the traveling device 11 is driven.
Is traveling forward and backward.

(2) At the time of the crushing operation At the time of the crushing operation, the operator operates, for example, a magnetic separator start switch (not shown) of an operation panel (not shown) provided at the driver's seat 89, and a carry-out conveyor start switch (not shown). ), A crushing device start switch (not shown), a presser conveyor start switch (not shown), and a feed conveyor start switch (not shown) are sequentially pressed, so that operation signals are driven through a controller (not shown). Output as a signal.
These drive signals include a control valve for a magnetic separator (not shown), a control valve for an unloading conveyor (not shown), a control valve for a crusher (not shown), a control valve for a presser conveyor (not shown), and The control valves for the feed conveyor (not shown) are input to these control valves to be switched, and the pressure oil from the hydraulic pump is supplied to the corresponding hydraulic actuators 87, 80, 28, 61, 51 via the respective control valves.
Etc., and they are driven.

As a result, the magnetic separator hydraulic motor 87 drives the magnetic separator belt 86 to rotate around magnetic force generating means (not shown), and the unloading conveyor hydraulic motor 80 circulates and drives the conveyor belt 81 so that the crusher is driven. Hydraulic motor 28, 2
8 drives the rotating shaft 23a of the crushing rotor 23 to rotate the crushing rotor 23 at a high speed. The hydraulic motor 61 for the pressing conveyor circulates and drives the conveying body 56 via the pressing roller 54; The circulation body 43 is driven via the.

As described above, the magnetic separator 8, the unloading conveyor 7, the crusher 16, the holding conveyor 5, and the feed conveyor 3 are started. In this state, when an object to be crushed (wood to be crushed or the like) is put into the hopper 2 by, for example, an appropriate work tool or a manual operation (manpower), the object to be crushed received by the hopper 2 is The transport plate 4 is placed on the transport plate 48 and guided by the side wall 2 b of the hopper 2.
8 conveys in a substantially horizontal direction to the rear side (right side in FIGS. 1 and 2) of the self-propelled wood crusher.

When the crushed material conveyed backward in this way reaches the vicinity of the front end (the left end in FIGS. 1 and 2) of the holding conveyor 5, the upper part thereof is moved by the carrier 56 of the holding conveyor 5.
Of the holding conveyor 5 is pressed down and held by the weight of the holding conveyor 5 by its own weight, and is held in cooperation with the feed conveyor 3 with the rotation of the carrier 56. Rear side (Fig. 1
(Right side in FIG. 2) and the crushing device 16. Note that the presser conveyor support mechanism 67 described above is used.
The hydraulic cylinder 69 is basically for expanding and contracting only during maintenance and forcibly raising and lowering the slider 70, and is not used for raising and lowering at the time of crushing (however, the role of a damper function for suppressing sudden raising and lowering is Fulfillment), the pressing conveyor 5 presses and grips the crushed object only by its own weight.

When the material to be crushed is introduced into the crushing device 16,
The pressing roller 54 at the end of the pressing conveyor 5 on the side of the crushing device 16 and the feed roller 41 at the end of the feed conveyor 3 on the side of the crushing device 16 cooperate to pinch the object to be crushed from above and below. The tip of the object to be crushed on the side of the crushing device 16 is made to protrude toward the crushing rotor 23 in a cantilever manner while the portion is used as a crushing fulcrum at the time of crushing. And
By colliding the crushing bit 21 of the rotating crushing rotor 23 with the protruding tip, the tip of the crushed material is relatively roughly folded or crushed (primary crushing, pre-crushing).
The broken tip of the crushed object is guided in the space on the outer peripheral side of the crushing rotor 23 along the rotation direction of the crushing rotor 23,
The anvils 24a, 24b, and 24c sequentially collide with each other and are further crushed by the impact force (secondary crushing, main crushing). The wood crushed material thus crushed is further impacted by the crushing bit 21 and the anvils 24a to 24c while rotating around the space on the outer peripheral side of the crushing rotor 23 until it has a particle size that can pass through the opening of the sieving member 29. Is added and crushed. When the particle size becomes small enough to pass through the opening of the sieving member 29, it is sorted through the opening and discharged to the outside of the sieving member 29.

[0069] In this way, it passes through the sieve member 29,
The discharged wood fragments fall onto the conveyor belt 81 of the unloading conveyor 7 via the chute 95 (see FIG. 3A). The carry-out conveyor 7 conveys the above-mentioned crushed wood material to the rear side (the right side in FIGS. 1 and 2) by the conveyor belt 81 driven by circulation, and finally removes the crushed wood material from the crusher main body 1 (self-propelled wood). It is discharged (conveyed) as a recycled product to the rear of the crusher (right end in FIG. 1).

At this time, the magnetic separator 8 applies the magnetic force from the magnetic force generating means to the crushed wood in the middle of the conveyance of the carry-out conveyor 7 through the magnetic separator belt 86 which is driven to rotate.
After the magnetic material on the conveyor belt 81 is attracted to the magnetic separator belt 86, the magnetic material is conveyed in a direction substantially perpendicular to the conveyor belt 81 (the width direction of the self-propelled wood crusher) and is transferred to the frame 78 of the unloading conveyor 7. It is dropped and discharged to the side of the conveyor belt 81 via a chute (not shown) provided.

(3) When replacing the sieve member When performing the crushing operation as described in (2) above, the particle size of the crushed wood is almost determined by the opening area of the sieve member 29. It is necessary to appropriately replace the sieve member 29 with one having a different opening area. Hereinafter, the replacement procedure will be described in detail.

First, the fixing bolt 19c of the cover 19 is loosened to remove the upper cover 19a and the lower cover 19b, respectively, to expose the opening 18 (see FIG. 12 described later). Note that the support member 30 may be removed after the support member 30 is lowered as described later. After that, the suspension bolts 36, 36 supported at two places in the width direction of the self-propelled wood crusher,
It is rotated counterclockwise, preferably at substantially the same time, at approximately the same speed, for example, with a wrench or the like (see FIG. 5). As described above, since the suspension bolt 36 is rotatably supported in the clockwise and counterclockwise directions by the support 37a, the relative position with respect to the support 37a does not change even when the suspension bolt 36 is rotated. . However, the shaft body 38 is connected to the suspension bolt 3
6 is rotated counterclockwise, so that the suspension bolt 3
The position is lowered relative to 6.

Thus, the above-described curved frame portion 30b
2, the bracket 30b2D fixed to the rear end (right side in FIG. 5) of the self-propelled timber crusher moves the shaft 38 together with the hanging bolt 36 while allowing the shaft 38 to rotate. The bracket 30b2 at the other end (the front end of the self-propelled wood crusher or the left end in FIG. 5) for lowering
Via the pin B and the pin 34, the pin 34 is rotated clockwise with respect to the bracket 33 using the pin 34 as a rotation axis as viewed in FIG. That is, the curved frame portions 30b2 and 30b2
When the support member 30 is rotated clockwise about the rotation shafts 4 and 34, the support member 30 is vertically moved downward from the crushing rotor 23 with the pins 34 and 34 as rotation shafts (see FIGS. 5 and 1).
2).

As described above, the support member 30 is moved until the lower end of the support member 30 almost reaches the bottom plate 15a of the crusher attachment portion. FIG. 12 is a diagram showing the state at this time. As shown in FIG.
(In a state where it is completely lowered), the lowered sieving member 29 is in a state of directly facing the opening 18 from the side. This allows
The sieve member 29 is lifted from above the support member 30, and the opening 1
8 and is extracted in the axial direction of the crushing device 16 (a direction perpendicular to the plane of the paper in FIG. 12).

It is sufficient that the new sieving member 29 is installed in a completely reverse order to the above. That is, after positioning and mounting on the support member 30 through the opening 18, the suspension bolt 36 is rotated clockwise to raise the support member 30, and installed on the outer peripheral portion of the crushing rotor 23. Thereafter, the upper and lower covers 19a and 19b are fastened and fixed by the fixing bolts 19c.

According to the embodiment of the above-described wood crusher of the present invention, the following effects are obtained.

That is, as described above, in the present embodiment, when the sieving member 29 is replaced for adjusting the particle size of the crushed wood, the sieving member 29 is moved to the vicinity of the opening 18 by the moving mechanism 39. Crush rotor 23
The sieve member 29 is removed from the axial direction of the crushing device 16 (crush rotor 23) through the opening 18 while avoiding the bearing portions 25 located at both ends in the axial direction of the sieving member 2.
9 can be exchanged. Thereby, the labor of the worker can be reduced. Hereinafter, this will be described in more detail using a comparative example. In addition, for convenience of explanation, in the following comparative examples, portions equivalent to those of the above-described embodiment of the present invention will be described by attaching the same reference numerals.

First, as a first comparative example, the support member 30
Is fixed to the body frame wall surface 15b, and the sieve member 29 is detachably provided on the support member 30 of this fixed structure. In this case, at the time of replacement of the sieve member 29, both ends of the rotating shaft 23a of the crushing rotor 23 are supported by the bearing mechanism 25 provided on the substantially box-shaped body frame wall surface 15b. The only option is to pull out the crushing rotor 23 upward (or downward) in the circumferential direction along the arc. However, if the sieve member 29 held by the support member 30 is to be pulled out (or pushed in) upward (or downward) along the outer periphery of the crushing rotor 23, a force is applied in an arc direction. Is added, and the sieve member 29 is pulled out (or pushed in), the resistance is large, and the labor of the worker engaged in the replacement work becomes very large.

Next, as a second comparative example, the support member 30
Is not a rotating structure, but is provided, for example, detachably with respect to the main body base portion 15, and when replacing the sieve member 29, the support member 30 is removed and the sieve member 29 is radially removed from the crushing rotor 23. . In this case, the sieve member 2
9 can be freely removed, so that a large resistance unlike the first comparative example does not occur. However,
In this case, the worker enters the lower space of the crushing rotor 23 to remove the support member 30 and the sieving member 29, but a large amount of crushed material remains on the radially outer peripheral side of the sieving member 29. Therefore, it is necessary to perform the cleaning separately each time the sieve member 29 is replaced. In addition, the worker who has entered the weight of the removed sieve member 29 must support it, and these operations require very large labor.

On the other hand, in one embodiment of the present invention, the sieve member 29 is removed from the axial direction while being held by the support member 30 and replaced as described above, so that the sieve member 29 is removed. When pulling out (or pushing in), if a force is applied in a linear direction, the resistance is relatively small, and no effort is required for supporting the weight of the sieving member 29 and cleaning it. Therefore, the sieve member 29 can be easily replaced unlike the case of the comparative example.

The sieve member 29 may be made of, for example, high-tensile steel. In this case, since the thickness of the sieving member 29 can be reduced while sufficiently securing the strength, the sieving member 29 can be easily replaced by a lighter weight, and the crushed material can be more easily passed through. Performance can be improved.

In one embodiment of the wood crusher of the present invention, the cover 19 for closing the opening 18 is provided.
Has been described by taking as an example a detachable cover that is fixed by fastening the fixing bolt 19c to the seat plate 20, but the present invention is not limited to this. That is, for example, the cover 19
May be a cover that can be opened and closed using a hinge. In this case, the same effects as those of the embodiment of the present invention are obtained.

Further, in one embodiment of the wood crusher of the present invention, the sieving member 29 is divided and disposed only in the circumferential direction of the crushing rotor 23, but the present invention is not limited to this. That is, for example, the width direction of the self-propelled wood crusher (perpendicular to the paper surface in FIG. 5) may be appropriately divided (for example, divided into two). In this case, for example, the openings 18 are provided on both sides in the width direction of the self-propelled wood crusher, and the sieve member 29 on one side in the width direction of the self-propelled wood crusher is connected to the corresponding opening 18 on one side.
And the sieve member 29 on the other side may be moved in and out of the opening 18 on the other side. In this case, it is possible to shorten the insertion and removal distance of the sieve member 29 for insertion and removal in the width direction of the self-propelled wood crusher,
Further, it can be easily replaced.

In one embodiment of the wood crusher of the present invention, the handle 29c of the sieving member 29 is connected to the crusher shown in FIG.
As shown in FIG. 6A and FIG. 6B, the sieve member 29 is mounted radially outward of the crushing rotor 23, but is not limited to this. That is, for example, as shown in FIG. 13A, a sieving member 29 provided with a handle portion 29Ac on the outer side in the axial direction of the crushing rotor 23 (the left-right direction in FIG. 13A).
A, and as shown in FIG. 13B, a sieve member 2 having a plate portion 29Ba provided with an opening 29Bc for a handle.
9B may be used. In this case, a similar effect is obtained.

Further, in one embodiment of the wood crusher of the present invention, the through hole 29b of the sieving member 29 is formed to penetrate the plate portion 29a in the radial direction of the crushing rotor 23. Not limited. That is, for example, FIG.
As shown in FIG. 1A, the normal rotation direction of the crushing rotor 23 (FIG. 1)
4 (a) may be a sieve member 29C provided with a through hole 29Cb having a shape corresponding to the rotation in the direction indicated by the middle arrow E.
In this case, in addition to the same effect as the above-described embodiment of the present invention, when the crushing rotor 23 rotates in the normal rotation direction, compared with the sieving member 29 according to the above-described embodiment of the present invention, the crushed wood passes through. Has the effect of improving the crushing efficiency.

Further, as shown in FIG. 14B, a through hole 29Db having a shape corresponding to the rotation of the crushing rotor 23 in the forward / reverse direction (the direction indicated by the double-headed arrow F in FIG. 14B) is provided. The sieving member 29D may be used. In this case, in addition to the same effects as in the embodiment of the present invention, the crushing rotor 2
In both forward and reverse rotations of No. 3, there is an effect of improving the ease of passage of the crushed wood as compared with the sieve member 29 according to the embodiment of the present invention.

In the embodiment of the wood crusher according to the present invention, the sieving member 29 has a substantially partial cylindrical shape, but is not limited to this. That is, for example, FIG.
As shown in (c), a plate portion 29Ea having a zigzag shape drawn concentrically with the crushing outer diameter R outside the crushing outer diameter R.
, And the through holes 29Eb may be provided so as to be substantially orthogonal to the plate portion 29Ea. Also in this case, FIG.
As in the modification shown in FIG. 4B, each through-hole 29Eb is provided in the forward / reverse direction of the crushing rotor 23 (the double-headed arrow G in FIG.
Both directions of the rotation (indicated by) have the effect of improving the penetration of crushed wood as compared with the sieving member 29 according to the embodiment of the present invention. Further, the plate portion 29Ea
The tertiary crushing effect of the crushed wood can also be expected by the projections 29Ea1 and 29Ea2.

Further, in one embodiment of the present invention, as shown in FIG. 6 (b), the sieve member 29 does not have a through hole 29b at a portion where it contacts the adjacent sieve member 29. However, the present invention is not limited to this, and as shown in a developed view of FIG. 15 (corresponding to FIG. 6B), the through-hole 29Fb is formed in the plate portion 29Fa also in the portion that comes into contact with the adjacent sieve member.
May be provided as the sieve member 29F. In this case, in addition to the same effects as those of the above-described embodiment of the present invention, the opening area is increased as compared with the sieving member 29 according to the above-described embodiment of the present invention (the portion that becomes a barrier for the passage of the crushed wood decreases. )
For this reason, there is an effect that the passing property of the crushed wood is improved.

In the above description, a wood crusher provided with a so-called impact crusher in which a cutting tool (crush bit 21) is attached to the outer periphery of a crushing rotor 23 as a crushing device has been described as an example. However, the present invention is not limited to this. Crushing device, for example, a cutter provided on a shaft arranged in parallel, a crushing device for shearing the object to be crushed by rotating in opposite directions (a biaxial shearing machine including a so-called shredder or the like),
A rotary crushing device that crushes a crushed object by interposing a crushed object between the rotators by rotating the pair in a direction opposite to each other with a pair of rotators (rotor) having a blade for crushing attached to the roll. (A six-shaft crusher including a so-called roll crusher) and a wood crusher provided with a so-called wood chipper for turning a crushed object into chips.
In these cases, the same effects as described above are obtained.

Further, in the above, the case where the present invention is applied to a self-propelled self-propelled timber crusher has been described as an example. However, the present invention is not limited to this. It is needless to say that the present invention may be applied to a portable wood crusher that can be lifted and transported by a crane or the like, or a stationary wood crusher arranged as a fixed machine in a plant or the like. A similar effect is obtained.

[0091]

According to the present invention, since the sieve member has a structure which can be inserted and removed from the width direction of the wood crusher while being held by the sieve member holding means, the replacement can be easily performed. .

[Brief description of the drawings]

FIG. 1 is a side view showing an entire structure of an embodiment of a wood crusher of the present invention.

FIG. 2 is a top view showing the entire structure of the embodiment of the wood crusher of the present invention.

3 is a front view as viewed in the direction A in FIG. 1 and a rear view as viewed in the direction B in FIG.

FIG. 4 is a partially enlarged side view in FIG. 1 showing a structure near a crushing unit constituting one embodiment of the wood crushing machine of the present invention.

FIG. 5 is a partially transparent side view in FIG. 4 showing a structure near a crushing unit constituting one embodiment of the wood crushing machine of the present invention.

FIG. 6 is a side view of a sieving member constituting one embodiment of the wood crusher of the present invention, and a developed view as viewed from a direction C in FIG. 6 (a).

7 is a plan view as seen from the direction D in FIG. 5, and FIG.
(A) It is the arrow side view seen from the middle E direction.

FIG. 8 is a partially cutaway sectional view taken along plane VIII-VIII in FIG. 1;

FIG. 9 is a partially enlarged view in FIG. 1 showing a detailed structure of a presser conveyor constituting one embodiment of the wood crusher of the present invention, which is shown in a partial cross section.

FIG. 10 is a transverse sectional view taken along a line XX in FIG. 9;

FIG. 11 is a vertical sectional view along XIA-XIA section in FIG. 9 and XI.
It is a longitudinal cross-sectional view by B-XIB cross section.

FIG. 12 is a partially enlarged side view in FIG. 1 showing a state in which a support member constituting one embodiment of the wood crusher of the present invention has been completely lowered by a moving mechanism.

FIG. 13 is a development view showing a modified example of the sieve member constituting one embodiment of the wood crusher of the present invention.

FIG. 14 is a cross-sectional view illustrating a modified example of a sieve member constituting one embodiment of the wood crusher of the present invention.

FIG. 15 is a developed view showing a modified example of the sieve member constituting one embodiment of the wood crusher of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher main body 3 Feeding conveyor (conveying means) 5 Holding conveyor (pressing introduction means) 7 Unloading conveyor 10 Main body frame 13 Endless track crawler (running means) 16 Crushing device 18 Opening 19 Cover (door) 21 Crushing bit 23 Crushing rotor 25 bearing mechanism (bearing part) 29 sieving member 30 support member (sieving member holding means) 39 moving mechanism

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B07B 1/46 B07B 1/46 A (72) Inventor Masamichi Tanaka 650 Kandamachi, Tsuchiura-shi, Ibaraki Pref. Hitachi Construction Machinery Inside the Tsuchiura Plant Co., Ltd. (72) Yoshimi Shiba 650, Kandamachi, Tsuchiura City, Ibaraki Prefecture Inside the Tsuchiura Plant Hitachi Construction Machinery Co., Ltd. (72) Tsutomu Iida 650, Kandamachi, Tsuchiura City, Ibaraki Prefecture Hitachi Construction Machinery Co., Ltd. (72) Inventor Makoto Yanagishita 650, Kandamachi, Tsuchiura-shi, Ibaraki Pref. ED06 ED12

Claims (8)

[Claims] 1. A rotary crushing device for crushing an object to be crushed, a sieve member holding means provided on an outer peripheral side of the crushing device, and an inner peripheral portion of the sieving member holding means in an axial direction of the crushing device. A wood crusher, comprising: a sieve member provided so as to be able to be inserted into and removed from the wood crusher. 2. A crushing device having a crushing rotor for crushing an object to be crushed, sieving member holding means provided on an outer peripheral side of the crushing device, and an axial line of the crushing rotor provided on an inner periphery of the sieving member holding means. A wood crusher comprising: a sieve member provided so as to be able to be inserted and removed in a direction; and an opening provided for inserting and removing the sieve member. 3. The wood crushing machine according to claim 2, wherein said opening is provided at a position which does not interfere with a bearing of said crushing rotor. 4. A wood crusher according to claim 2, further comprising a moving mechanism for moving the sieving member held by said sieving member holding means to a position near said opening. . 5. The wood crushing machine according to claim 2, wherein said opening is provided with a removable door. 6. The wood crushing machine according to claim 1, wherein said sieving member has a structure capable of being divided into a plurality of pieces in the axial direction of said crushing device. 7. The wood crusher according to claim 1, wherein said sieving member is made of high-tensile steel. 8. A rotary crusher, comprising: a main body frame; a traveling means provided on the main body frame; A sieve member holding means provided on an outer peripheral side of the device; a sieve member provided on an inner peripheral portion of the sieve member holding means so as to be able to be inserted and removed in an axial direction of the crushing rotor; and one side of the main body frame with respect to the crushing device A conveying means for conveying wood to be crushed to the crushing device; a press-introducing means disposed above the conveying means; and a second outer side of the main body frame with respect to the crushing device from a position below the crushing device. And a carry-out conveyor extending to the wood crusher.