JPH07842A - Shredder - Google Patents

Abstract

PURPOSE:To simplify the assembling of a rotor and the replacement work of a protecting liner and a hammer by connecting the hammer to the protruding piece part of a disc on a rotor plate using a hammer mounting shaft. CONSTITUTION:The shredder is equipped with a rotating shaft 1, a rotor 2, hammer mounting shafts 3, hammers 4, a protecting liner 5, protecting liner mounting shafts 6 and a lateral wall 7. The rotor 2 is composed of rotor plates 21, each having a disc part having protruding piece part 21a formed on the peripheral part. In addition, the rotor plates 21 are installed side by side on a rotating shaft 1 through a clearance between adjacent disc parts. The hammers 4 are connected to the protruding piece part 21a of the disc part on the rotor plates 21 through the hammer mounting shafts 3. The protruding liner 5 is connected to the protruding piece part 21a through the protecting liner mounting shaft 6. Consequently, the protecting liner 5 can be replaced independently of the hammer 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shredder which facilitates replacement of a protective liner.

[0002]

2. Description of the Related Art Conventionally, a shredder for crushing metal scrap into a predetermined size has been known. Its structure is such that a rotor is attached to a rotating shaft and a hammer is attached to the outer peripheral portion of the rotor by the shaft. Is. The rotor is covered with a protective liner (protective shield) from the outside to protect the entire rotor from the intrusion of foreign matter caused by crushing (for example, Japanese Patent Publication No. 54-30775). Then, as shown in FIG. 4, the method of attaching the protective liner is as follows.
The outer peripheral portion of the rotor plate R of each rotor is covered with a plurality of protective liner plates L forming a pair of adjacent protective liners, and the rotor plate and this protective liner plate are connected by a mounting shaft P. The hammer H is supported by the mounting shaft P.

[0003]

By the way, the protective liner plate L is apt to be damaged due to collision of crushed metal scrap and needs to be replaced regularly. According to the conventional example, since all the three members of the protective liner plate L, the rotor plate R, and the hammer H are supported only by the mounting shaft P, when the protective liner is replaced, the rotor plate and the hammer are also mounted. However, all of them had to be canceled once, which made the replacement work troublesome. Also, there was a similar problem when assembling the rotor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a shredder capable of easily assembling a rotor and replacing protective liners and hammers.

[0005]

A feature of the present invention is that a rotary shaft 1, a rotor 2, a plurality of hammer mounting shafts 3, a plurality of hammers 4, a protective liner 5, and a plurality of protective liner mounting shafts 6 are provided. And the side wall 7.

The rotor 2 is composed of a plurality of rotor plates 21, each of which has a plurality of protrusions 2 on its outer periphery.
Each of the discs has a disc portion formed with 1a, and the disc portions are mounted side by side on the rotary shaft 1 with a gap between adjacent disc portions.

The plurality of hammer mounting shafts 3 extend in parallel to the axial direction of the rotary shaft and penetrate through the projecting pieces of the respective disc portions of the rotor plate, and the plurality of hammers 4 form the circles. It is arranged in the gap between the plate portions and is attached to the rotor plate by the hammer attachment shafts.

The protective liner 5 comprises a plurality of protective liner portions 51. Each of the protective liner portions has a protrusion 51a on the inner peripheral side thereof, and an outer peripheral surface of each of the protrusions of the rotor plate. Also, the plurality of protective liner mounting shafts 6 extend in parallel to the axial direction of the rotating shaft, and protect the rotor plate by covering the protrusions of the disk portions of the rotor plate. It penetrates through the protrusion of the protective liner.

The side walls 7 are arranged in front of and behind the rotor, and support both ends of the plurality of hammer mounting shafts 3 and the plurality of protective liner mounting shafts 6, respectively.

[0010]

Therefore, the hammer 4 is connected to the protruding piece 21a of the disk portion of the rotor plate 21 by the hammer mounting shaft 3, and the protective liner 5 is connected to the protruding piece 21a by the protective liner mounting shaft 6. Therefore, the protection liner 5 can be replaced independently of the hammer 4.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The present invention, as shown in FIGS.
When roughly classified, it comprises a rotary shaft 1, a rotor 2, a plurality of hammer mounting shafts 3, a plurality of hammers 4, a protective liner 5, a plurality of protective liner mounting shafts 6, and a side wall 7.

The detailed structure will be described below.
A rotor 2 is attached to the rotating shaft 1 so as to be movable in the axial direction and non-rotatable. The specific structure is that the rotor 2 is composed of a plurality of rotor plates 21 ..., Each of these rotor plates is provided with a fitting hole in the center thereof, and the fitting hole is fitted into the rotary shaft 1. In this case, the rotor plates are arranged side by side in the axial direction on the outer peripheral portion of the rotary shaft. As shown in FIG. 3, the cross-sectional shape of each rotor plate 21 is such that the periphery of the fitting hole fitted to the rotary shaft 1 is a thick portion, and the disc portion is larger than the thick portion. Is a thin portion, so that a gap is formed between the disc portions of the adjacent rotor plates. As shown in FIG. 1, the planar shape of the disk portion of each rotor plate 21 is formed into a gear shape by six projecting piece portions 21a, ... In a state in which the hammer mounting shaft 3 having a shape extending parallel to the axial direction of the rotary shaft 1 penetrates through the through hole formed in the center of each projecting piece portion 21a, and at the same time, the hammer mounting shaft 3 penetrates through the mounting hole of the hammer 4. The hammer is mounted on the rotor plate, and both ends of the hammer mounting shaft are pivotally supported on the side wall 7 of the rotor 2. The hammers 4 are arranged at intervals in the axial direction of the rotary shaft 1 and in the circumferential direction of the rotor plate 21. The base end of each hammer 4 is, as shown in FIG.
As described above, the hammer mounting shaft 3 is located in the gap between the disc portions of the rotor plate 21, and the tip of the hammer is attached to the rotor plate 21 as shown in FIG. The hammer projects outward from the outer peripheral portion, and the hammer can swing about the hammer mounting shaft.

The outer peripheral surface of the rotor 2 is covered with a protective liner 5 from the outside. The front shape of the protective liner 5 is shown in FIG.
As shown in FIG. 3, the protective liner portion 51 is divided into six parts, and each protective liner portion has a rotor plate 2 as shown in FIG.
The protective liner 5 covers the entire surface of the rotor 2 with no gaps. Of course,
The entire circumference of the surface does not mean a portion where the hammer 4 is attached, and a slit 52 is formed in a portion of the protective liner 5 corresponding to the installation position of the hammer 4, and the hammer is rotated. It does not interfere with the movement.
Each of the protective liner portions 51, ... Has four projecting portions 51a, ... Protrudingly provided inside thereof, and each projecting portion has a position corresponding to both shoulders of the projecting piece portion 21a, as shown in FIG. Moreover, the shape is such that it does not come into contact with the hammer mounting shaft 3 that penetrates through the center of the protruding piece portion 21a. A protective liner mounting shaft 6 for connecting the protective liner portion 51 to the rotor plate 21 penetrates through the adjacent protruding portion 51a and protruding piece portion 21a,
The mounting shaft extends parallel to the axial direction of the rotary shaft 1, and both ends of the liner mounting shaft 6 are pivotally supported by the side wall 7 of the rotor 2. Therefore, the protective liner mounting shaft 6 and the hammer mounting shaft 3 are independent of each other.

Therefore, the replacement of the protective liner portion 51 can be performed by releasing the fixation of the protective liner mounting shaft 6, and at this time, it is not necessary to release the supporting state of the hammer 4. When assembling the rotor, the rotor plate 21 and the protective liner 5 are assembled independently of each other,
Finally, the protective liner mounting shaft 6 is connected.

[0015]

According to the present invention, the hammer is connected to the protrusion of the disk portion of the rotor plate by the hammer mounting shaft, and the protective liner is connected to the protrusion by the protective liner mounting shaft. Can be exchanged independently regardless of the hammer,
Replacing the protective liner and assembling the rotor are simplified.
Further, since each protective liner covers and protects the outer peripheral surface and both side surfaces of each projecting portion, the entire inside of the rotor can be protected from intrusion of foreign matter caused by crushing.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line I-I of FIG.

FIG. 2 is an enlarged cross-sectional view of a part of FIG. 1II-II line.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an enlarged cross-sectional view showing a connection state between a conventional rotor plate and a hammer. It is a front view which showed the usage method of hands.

[Explanation of symbols]

 1 Rotating Shaft 2 Rotor 21 Rotor Plate 21a Projecting Piece 3 Hammer Mounting Shaft 4 Hammer 5 Protective Liner 51 Protective Liner 51a Projection 6 Protective Liner Mounting Shaft 7 Side Wall

Claims (1)

[Claims] 1. A rotary shaft (1), a rotor (2), a plurality of hammer mounting shafts (3), a plurality of hammers (4), a protective liner (5), and a plurality of protective liner mounting shafts (5). 6)
And a side wall (7), the rotor (2) is composed of a plurality of rotor plates (21), and the rotor plate is provided with a plurality of protrusions (21) on the outer periphery thereof.
a), each of which has a disk part formed thereon, and is mounted side by side on the rotary shaft with a gap between the adjacent disk parts. The plurality of hammer mounting shafts (3) are mounted on the rotary shaft. Extending parallel to the axial direction of the shaft and penetrating the projecting piece of each disc portion of the rotor plate, a plurality of hammers (4) are arranged in the gaps between the disc portions, The protection liner (5) is mounted on the rotor plate by a hammer mounting shaft, and the protection liner (5) includes a plurality of protection liner portions (51).
Each of the above-mentioned protective liner portions has a protrusion (51
a) for covering and protecting the outer peripheral surface and both side surfaces of each of the projecting pieces of the rotor plate, wherein the plurality of protective liner mounting shafts (6) are arranged in the axial direction of the rotating shaft. The side walls (7) are arranged in front of and behind the rotor, and extend in parallel with each other to penetrate through the protrusions of the discs of the rotor plate and the protrusions of the protective liners. A shredder supporting both ends of the plurality of hammer mounting shafts (3) and the plurality of protective liner mounting shafts (6).