JP2003278180A - Crusher attachment and crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bucket type crusher attachment capable of uniforming the size of crushed chips and simplifying a drive unit, and a working machine having the attachment. <P>SOLUTION: This attachment has a bucket 21 having a mounting part 24 to the working arm of the working machine and a drilling claw 20. Two rotating plates 30 are provided within the bucket 21 to be opposed to each other. A plurality of shafts 31 is concentrically provided between the opposed rotating plates 30 and 30. A crushing roller 32 is rotatably fitted to each shaft 31. This attachment further comprises a rotational drive unit including a motor 37 for rotating the rotating plates 30 with the shafts 31. A crushing body 35 is provided in the bucket 21 so that each crushing roller 32 is opposed thereto during rotation to crush a matter to be crushed between the crushing roller 32 and the crushing body 35. A screen 45 for sieving the crushed matter is provided under the crushing roller 32. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket type crusher attachment which is used by being attached to a work arm of a work machine and used for crushing cobblestone, concrete, etc., and a crusher using the same.

[0002]

2. Description of the Related Art A crusher attachment attached to an arm of a working machine such as a hydraulic excavator is disclosed in, for example, Japanese Patent Laid-Open No. 10-1.
It is disclosed in Japanese Patent No. 59119. This type of crusher attachment is equipped with a crushing device for crushing crushed objects such as cobblestones and concrete blocks in the bucket attached to the working arm, so scooping and crushing of the crushed objects, There is an advantage that it can be done with a single work machine that is relatively small and has a small turn. The crusher attachment described in the above publication is provided with sharp crushing blades around two rotating shafts arranged in parallel, and crushes by piercing the concrete block sandwiched between the bucket inner wall and each rotating shaft with the crushing blades. To do.

[0003]

However, when crushing a concrete block block of a concrete structure crushed into blocks by a crusher for reuse, etc., the reinforcing bars and the like fixed to the concrete remain long. There is a problem that the size of the crushed chips obtained by crushing is not uniform, such as falling without crushing.

Since a plurality of rotary shafts are provided,
If each rotating shaft is driven by the motors on both sides of the bucket, four motors are required, the size of the driving device becomes large, the crusher attachment becomes large, and the weight becomes large, resulting in poor workability. There is a problem that

In view of the above-mentioned problems, the present invention provides a bucket type crusher attachment having a structure in which the sizes of crushed debris can be made uniform and the drive device can be simplified, and a working machine having the attachment. With the goal.

[0006]

A crusher attachment according to the present invention comprises a bucket having a mounting portion for a working arm of a working machine, and two rotary plates provided in the bucket so as to face each other. A plurality of shafts arranged between the opposed rotary plates and connecting the both rotary plates, and a crushing roller rotatably fitted to each shaft, and a rotation drive device for rotating the rotary plate together with the shafts. And each of the crushing rollers is provided at a position in the bucket facing each other during revolution, and a fixed crushing body for crushing the crushed object with the crushing roller, and a crushing roller provided below the crushing roller, And a screen for sieving the crushed material.

As described above, in the present invention, since the screen (sieves such as a lattice and a net) is provided below the crushing roller, the crushable objects that cannot pass through the screen are fixed to the crushing roller in the bucket. Since it is crushed until it can pass through the screen with the crushed body, the size of the crushed waste can be made uniform. Further, since a plurality of shafts are concentrically provided between the pair of rotary plates and the crushing rollers are attached to the respective shafts, the crushing rollers can be revolved by rotating the rotary plate, and the rotary drive is possible. The configuration of the device can be simplified.

In the present invention, the rotation driving device is a motor mounted on the bucket, sprockets respectively mounted on the output shaft of the motor and the central shaft of the rotary plate, and a chain wound between the sprockets. With the configuration consisting of (1) and (2), the motor can be provided separately from the excavating claw of the bucket, and a structure in which damage to the motor or the like is unlikely to occur can be realized.

In the present invention, the rotary drive device is mounted on a motor mounted on the bucket, an output shaft of the motor and a central shaft of the rotary plate, and gears meshing with each other directly or via an idler. With the configuration consisting of (1) and (2), there is no problem of looseness of the chain, and it is not necessary to provide an adjusting mechanism for the chain, as compared with the case of using a sprocket and a chain, and the size is reduced.

In the present invention, if the rotary drive device is constituted by a motor having an output shaft connected to the central shaft of the rotary plate, the structure of the rotary drive device is further simplified.

In the present invention, if the rotary drive device is provided on both sides of the bucket corresponding to the two rotary plates, the crushing force can be improved and the efficiency can be improved.

In the present invention, if the fixed crushing body is attached to the bucket so that the clearance between the fixed crushing body and the crushing roller can be adjusted,
By adjusting the interval, it is possible to easily crush into a desired size of crushed waste.

The crusher of the present invention can achieve the above-mentioned respective operational effects by constructing the crusher attachment by attaching it to the working arm.

[0014]

1 is a side view showing an embodiment of a crusher attachment and a crusher according to the present invention. This crusher comprises a crusher attachment 3 which is detachably attached to a work arm 2 of a work machine 1 which is a hydraulic excavator. The working machine 1 has a revolving structure 6 mounted on a traveling structure 4 via a revolving device 5, and a working arm 2 mounted on the revolving structure 6. The working arm 2 is composed of a boom 8 which is attached to a revolving structure 6 by a boom cylinder 7 so as to be up and down, and an arm 10 which is attached to the tip of the boom 8 by an arm cylinder 9 so as to be vertically rotatable.

The crusher attachment 3 has one end rotatably connected to the tip of the arm 10 by a pin 11. The rotating device of the crusher attachment 3 has an arm 1 at one end.
Bucket cylinder 13 connected to pin 0 by pin 12
And an arm link 16 connected and attached between the other end of the bucket cylinder 13 and the arm 10 by pins 14 and 15, respectively, and between the other end of the bucket cylinder 13 and the crusher attachment 3. Pin 14,
And a bucket link 18 connected by 17 and attached.

2 to 4 are views showing the details of the crusher attachment 3. As shown in FIG. As shown in FIGS. 2A to 2D, the crusher attachment 3 has a crushing device 22 provided in a bucket 21 having an excavating claw 20, and an opening 23 for dropping crushed debris on the bottom surface of the bucket. Have.
Reference numeral 24 denotes an attachment portion to the arm 10, and the attachment portion 24
Has a boss 25 that is connected to the arm 10 by the pin 11, and a boss 26 that connects the bucket link 18 by the pin 17.

As shown in FIGS. 2 (E), 3 (A) and 3 (C), the crushing device 22 has a central shaft 29 rotatably supported by bearings 27 provided near both side plates of the bucket 21. In the vicinity of the bearing 27 on the central shaft 29, the centers of the rotating plates 30, 30 facing each other are fixed and attached. These rotary plates 30 and 30 rotate about the rotary shaft 29, and between the rotary plates 30 and 30, as shown in FIG.
As shown in FIG. 4, a plurality of (31 in the illustrated example) shafts 31 arranged concentrically are provided by connecting both ends thereof to the rotary plates 30, 30. Each shaft 31 has a crushing roller 3
2 is rotatably fitted. The crushing roller 32 is a cylindrical body 32.
A crushing protrusion 32b is provided on the outer periphery of a. As a result, the crushing roller 32 has a configuration of rotating (revolving) about the shaft 31 and rotating (revolving) about the central shaft 29.

As shown in FIG. 4, the front and rear of the aggregate of the crushing rollers 32 are surrounded by a front wall 33 and a rear wall 34, and the crushed bodies fixed to the inner surfaces of these walls 33 and 34, respectively. 35 are provided, and the crushing bodies 35 face each other during the rotation of the crushing roller 32. These crushed bodies 3
Reference numeral 5 is a steel plate 35a having a protrusion 35b fixed thereto by welding or the like. In the present embodiment, the protrusion 3
A spherical body made of a super hard material is used as 5b.

In the present embodiment, the walls 33, 3 are
4 and the crushed body 35, a shim 36 is sandwiched, and the shim 36
The distance between the crushing body 35 and the crushing roller 32 can be adjusted by changing the thickness of the crushing body. ing.

On the side of the bucket 21 opposite to the excavating claw 20, brackets 39 for mounting the drive motor 37 of the crushing device 22 are provided extending from both sides of the bucket. Sprockets 40 and 41 are attached to the output shaft of the motor 37 and the central shaft 29, respectively, and a chain 42 is hung on these sprockets 40 and 41 so that the rotational force of the motor 37 is applied to the central shaft 29 and the rotary plate 30. Transmitted. In FIGS. 3A to 3C, 43 is a position adjusting device of the motor 37 for adjusting the distance between the sprockets 40 and 41 to adjust the tension of the chain 42,
A bolt hole for fixing the motor 37 is selected for position adjustment.

Above the crushing device 22, a hopper 44 is provided which protects the rotary drive of the crushing device from the crushed object and guides the crushed object to the crushing device 22.

Below the crushing roller 32 in the bucket 21, as shown in FIGS. 2 (D), (E), FIG. 3 (C) and FIG.
It is detachably attached with a bolt 46. As shown in FIG. 4, the gap G between the revolving outermost peripheral locus R of the crushing roller 32 and the inner surface of the screen 45 is formed so as to become gradually narrower in the crushing direction of the crushing roller 32 so that the crushed debris of the screen 45 is removed. It is designed so that it can be forcibly pressed downward from the hole and dropped, thereby improving the sieving efficiency. Vertical and horizontal reinforcing plates 47 are fixed to the lower surface of the screen 45 for preventing deformation and protecting the screen 45.

This crusher moves to a place where there is a crushed object such as a cobblestone or a concrete block by self-propelling, and the crushed object is put in the bucket 21 by the operation of the working arm 2 or the bucket 21 as shown in FIG. As shown, the excavation claw 20 is scooped so as to face the working machine 1, the motor 37 is operated to revolve the crushing roller 32 together with the rotary plate 30, and the crushing roller 32 and the fixed crushing body 35 are covered. Crush the crushed material.

At this time, the crushing roller 32 is the crushing roller 3
2 and the rotation of the object to be crushed in the bucket 21 associated with the revolution and the object to be crushed sandwiched between the crushing roller 32 and the crushing body 35 (rotating) to cause the crushing protrusion 32b.
Collides with the object to be crushed and promotes crushing. Since the crushing roller 32 is rotatably fitted to the shaft 31, during the crushing process, the crushing roller 32 appropriately rotates according to the movement of the object to be crushed, and the crushing roller 32 and the crushing projection 32b receive an unreasonable force. When working, it can be released by rotation. Therefore, damage and abrasion of the crushing roller 32 and the crushing projection 32b are suppressed.

The crushed chips, which can pass through the holes of the screen 45 due to the crushing, fall downward from the screen 45 and are collected on a track or a collecting place. The object to be crushed that cannot pass through the screen 45 is crushed again between the crushing body 35 fixed to the rear wall 34 and the crushing roller 32, and some of the crushed waste drops, and the rest is fixed again to the front wall 33. The crushed body 35 and the crushing roller 32 are crushed again. In this way, the crushable objects that cannot pass through the screen 45 are crushed until they can pass, and for example, the reinforcing bars and the like do not pass long and are crushed into crushed scraps of uniform maximum size.

Further, a plurality of shafts 31 are concentrically provided between the pair of rotating plates 30 and 30, and the crushing roller 3 is attached to each shaft 31.
Since 2 is attached, the plurality of crushing rollers can be rotated by rotating the rotary plate 30, and the configuration of the rotation drive device can be simplified without increasing the number of motors 37.

Further, in the present embodiment, the rotation drive device is a motor 37 attached to the bucket.
And sprockets 40 and 41 attached to the output shaft of the motor 37 and the central shaft 29 of the rotary plate 30, respectively.
And a chain 42 wound around both sprockets 40, 41, the motor 37 can be provided away from the excavating claw 20 of the bucket 21, and a structure that does not easily cause damage to the motor 37 or the like is realized. it can.

Further, in the present invention, the rotary driving device may be provided only on one rotary plate 30 side, but in the present embodiment, the buckets corresponding to the two rotary plates 30 and 30 are respectively provided. Since it is provided on both sides of 31, the crushing power can be improved and the efficiency can be improved.

Further, in the present embodiment, since the fixed crushing body 35 is attached to the bucket 21 so that the clearance between the crushing body 35 and the crushing roller 32 can be adjusted, the desired crushing can be achieved by adjusting the distance. It can be easily crushed to the size of trash.

Further, in the present embodiment, the screen 45 is detachably attached by the bolts 46. Therefore, by preparing the screen 45 having different hole sizes, it is possible to crush various sizes. You can get scraps.

Further, as shown in FIG.
And the opening 22 of the bucket 21 between the vertical and horizontal reinforcing plates 4
7 is provided, the screen 45 can be prevented from directly colliding with an external rock or the like, and deformation and damage due to the collision of the rock or the like can be avoided.

5 and 6 show another embodiment of the crusher attachment of the present invention. 5 and 6, in FIG.
Throughout the drawings, the same reference numerals as those shown in FIG. 4 indicate components having the same functions. In the present embodiment, the rotation driving device includes a motor 37 attached to the bucket 21, gears 49 and 50 attached to an output shaft of the motor 37 and a central shaft 29 of the rotating plate 30, respectively. And an idler 51 interveningly engaged with each other.

With this structure, the sprocket 4
Compared with the case of 0, 41 and the chain 42, there is no problem of looseness of the chain 42, it is not necessary to provide an adjusting mechanism for the chain 42, and the configuration is simplified and downsized. The gears 49 and 50 may be directly meshed with each other.

7 and 8 show another embodiment of the crusher attachment of the present invention. 7 and 8, in FIG.
Throughout the drawings, the same reference numerals as those shown in FIG. 6 indicate components having the same functions. In this embodiment, the rotary drive device is attached by directly connecting the output shaft of a motor 37 to the central shaft 29 of the rotary plate 30. According to the present embodiment, the configuration of the rotary drive device is further simplified.

[0035]

According to the present invention, since the screen is provided below the crushing roller, the object to be crushed which cannot pass through the screen passes through the screen between the crushing roller in the bucket and the fixed crushing body. Since it is crushed until it is possible, the size of the crushed chips can be made uniform. Further, since a plurality of shafts are concentrically provided between the pair of rotating plates and the crushing rollers are attached to the respective shafts, the plurality of crushing rollers can be rotated by rotating the rotating plate, and the rotation drive is performed. Since the structure of the device can be simplified and the rotary drive device can be lightened, workability is improved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a crusher attachment and a crusher according to the present invention.

2A is a perspective view of the crusher attachment of the present embodiment, FIG. 2B is a rear view thereof, and FIG. 2C is a front view thereof.
(D) is a sectional view taken along line FF of (C), and (E) is taken along line G- of (D).
It is a G sectional view.

3 (A), (B), and (C) are a plan view, a side view, and a bottom view of the crusher attachment of FIG. 2, respectively.

FIG. 4 is a partially enlarged cross-sectional view of FIG.

5 (A), (B) and (C) are a plan view, a side view and a bottom view showing another embodiment of the crusher attachment of the present invention.

6 (A), (B) and (C) are a rear view, a front view and a sectional view of the crusher attachment of FIG. 5, respectively.

7 (A), (B) and (C) are a plan view, a side view and a bottom view showing another embodiment of the crusher attachment of the present invention.

8 (A), (B) and (C) are a rear view, a front view and a sectional view of the crusher attachment of FIG. 7, respectively.

[Explanation of symbols]

1: Working machine, 2: Working arm, 3: Crusher attachment, 4: Traveling body, 5: Revolving device, 6: Revolving body, 7: Boom cylinder, 8: Boom, 9: Arm cylinder, 1
0: Arm, 13: Bucket cylinder, 16: Arm link, 18: Bucket link, 20: Excavation claw, 21: Bucket, 22: Crushing device, 23: Opening part, 24: Mounting part, 27: Bearing, 29: Center Shaft, 30: Rotating plate, 31:
Shaft, 32: Crushing roller, 32a: Cylindrical body, 32b: Protrusion, 33: Front wall, 34: Rear wall, 35: Crushing body, 35a:
Steel plate, 35b: protrusion, 36: shim, 37: motor, 3
9: bracket, 40, 41: sprocket, 42: chain, 43: position adjusting device, 44: hopper, 45: screen, 46: bolt, 47: reinforcing plate, 49, 50:
Gear, 51: idler

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI Theme Coat (reference) E04G 23/08 E04G 23/08 A (72) Inventor Tadashi Muraoka 650 Jinritsucho, Tsuchiura City, Ibaraki Hitachi Construction Machinery Incorporated company Tsuchiura factory (72) Inventor Akihiro Hatano 650 Kintate-cho, Tsuchiura city, Ibaraki prefecture Hitachi Construction Machinery Incorporated Tsuchiura factory (72) Inventor Iwa Wakamatsu Kitaichishi, Saya-cho, Aichi prefecture 60-1 F term (Reference) 2D012 DA02 2E176 AA01 DD02 4D063 CC01 CC03 GA07 GA10 GC17 GC23 4D067 DD04 DD08 GA02 GA06 GB03

Claims (7)

[Claims] 1. A bucket having a mounting portion to a working arm of a working machine, two rotary plates provided in the bucket so as to face each other, and arranged between the rotary plates facing each other. A plurality of shafts that connect between both rotary plates and a crushing roller that is rotatably fitted to each shaft, a rotation drive device that rotates the rotary plate together with the shaft, and the crushing rollers face each other during revolution. A fixed crushing body provided in a position inside the bucket for crushing the crushed object with the crushing roller, and a screen provided below the crushing roller for sieving the crushed object after crushing A crusher attachment characterized by. 2. The crusher attachment according to claim 1, wherein the rotary drive device includes a motor attached to the bucket, and sprockets attached to an output shaft of the motor and a central shaft of the rotary plate, respectively. A crusher attachment characterized by consisting of a chain wound between both sprockets. 3. The crusher attachment according to claim 1, wherein the rotary drive device is attached to a motor attached to the bucket, an output shaft of the motor and a central shaft of the rotary plate, and directly attached to each other. A crusher attachment, characterized in that it comprises a gear that meshes with a shaft or via an idler. 4. The crusher attachment according to claim 1, wherein the rotary drive device comprises a motor having an output shaft connected to a central shaft of the rotary plate. 5. The crusher attachment according to any one of claims 1 to 4, wherein the rotary drive device is provided on both sides of the bucket corresponding to the two rotary plates. Crusher attachment. 6. The crusher attachment according to any one of claims 1 to 5, wherein the fixed crusher is attached to a bucket so that a gap between the fixed crusher and the crusher roller can be adjusted. 7. A crusher having the crusher attachment according to any one of claims 1 to 6.