JP2003093906A - Method and device for fixing hammering plate in impact crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for fixing hammering plate in impact crusher which makes easy replacement of a hammering plate, moreover, even when the hammering plate is curved and there is a gap due to the manufacture error, is excellent in stability (fixture condition) of the hammering plate, has no fear of being brought into local contact and allows prevention of the fatigue of rotor disk and the failure of the hammering plate, and a device therefor. SOLUTION: In the impact crusher, the rotor disk 3 which is made by loading the hammering plates 2 freely attachably and detachably is supported by a rotation shaft in a machine case and a plurality of repulsion plates corresponding to the hammering plates 2 are disposed and loading grooves 6 of the hammering plates 2 are formed at every same open angle on the outer periphery of the rotor disk 3. This method further features that the lower parts of the hammering plates 2 are directly suspended and lowered into the loading grooves 6 from just above of opening parts of the loading grooves 6 which are turned upwardly, thereafter, wedge shaped blocks 7 are inserted between the loading grooves 6 and the hammering plates 2 from a lateral side of the rotor disk 3 and the hammering plates 2 are fixed inside the grooves 6 by the wedge shaped blocks 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for mounting a striking plate on a rotor disk of an impact crusher.

[0002]

2. Description of the Related Art Conventionally, a rotor disk and a striking plate of an impact crusher have a receiving surface which engages with a rear projection of the striking plate in a striking plate charging groove formed on the outer periphery of the rotor disk, and a front projection of the striking plate. A guide metal (cushioning material) that engages with was inserted between the charging groove and the front surface of the striking plate, and a bending plate was inserted into the gap between the guide metal and the rotor disk to fix the striking plate.

However, since the striking plate is curved as shown by the phantom line in FIG. 6, a gap is always generated due to a manufacturing error of the striking plate, the rotor disk, and the guide metal, and especially when crushing a large lump or a large amount of processing. In some cases, the stability (fixing condition) of the striking plate may be poor, and at this time, each part locally contacts and exceeds the allowable surface pressure strength. It could lead to damage.

When the striking plate is replaced, the striking plate can be removed in the vertical direction by removing the bent plate and the guide metal in the above-mentioned charging groove of the rotor disk. The workability of the replacement is good, but there is a gap due to manufacturing error. There is a risk that the rotor disk may be settled and the striking plate may be damaged.

[0005]

According to the present invention, the striking plate can be easily replaced, and the stability of the striking plate can be maintained even if the striking plate is curved as described above or if there is a gap due to manufacturing error. (Fixing condition) Good, there is no possibility of local contact, and the purpose is to prevent the settling of the rotor disk and the damage of the striking plate.

[0006]

In order to achieve the above-mentioned object, the present invention firstly proposes, in a machine box, a rotor disk having a striking plate removably mounted therein, which is rotatably supported by a rotating shaft. In the impact crusher in which a plurality of repulsion plates corresponding to the above are provided and the impact grooves of the striking plate are formed at the same opening angle on the outer periphery of the rotor disk, the striking plate of the striking plate is located directly above the opening of the above-mentioned impact groove. The lower part is directly suspended in the charging groove,
After that, a wedge-shaped block is inserted from the side of the rotor disk between the charging groove and the striking plate, and the striking plate is fixed inside the groove by the wedge-shaped block, a striking plate fixing method in an impact crusher, Secondly, a support block is inserted from the side of the rotor disk between the wedge-shaped block and the bottom surface of the charging groove, and the wedge-shaped block is drilled at the bolt head of a bolt screwed vertically into the support block. Insert the wrench into the vertical through hole, engage the wrench with the bolt head, rotate the wrench to raise the bolt head and the wedge-shaped block, and wedge the charging groove and the striking plate. A method for fixing an impact plate in an impact crusher according to the first aspect of the present invention, in which the impact crusher is clamped and fixed with a block, and thirdly, in the impact crusher according to the first aspect of the present invention, an impact struck into a charging groove of the impact plate. Of the striking plate is formed so as to engage with the rear projection of the striking plate, and an inclined surface facing the front surface of the striking plate is formed in the charging groove. A wedge-shaped block having a width larger than the maximum width of the vertical cross section and laterally inserted between the inclined surface and the front surface, and laterally inserted between the lower surface of the wedge-shaped block and the bottom surface of the charging groove. A supporting block, a bolt is screwed downward from the upper surface of the supporting block, the lower surface of the wedge-shaped block is supported by the bolt, and the wedge-shaped block has a through hole formed from its upper surface. And a striking plate fixing device in an impact crusher in which a bolt head of the bolt can be rotated normally and reversely and moved up and down by a wrench inserted in a through hole.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A horizontal high-speed rotating shaft 4 is rotatably supported in a lower part of a material inlet 1'of a machine box 1, and a plurality of (three in this case) shown in FIGS. Rotor disk 3,
3 and 3 are supported at intervals s.

The rotor disk 3 is provided with a charging groove 6 for the striking plate 2 at the same opening angle (90 degrees in FIG. 5) about the rotary shaft 4.

The striking plate 2 is detachably mounted in the groove 6, and a plurality of (three here) repulsion plates 5, 5, 5 corresponding to the striking plate 2 are provided on the upper lid 1 "side of the machine case 1. When provided, the impact crusher 11 is formed (FIG. 5).

As shown in FIG. 1, the striking plate 2 is a rectangular alloy plate which is vertically symmetrical with respect to the vertical cross section and is long in the horizontal direction as shown by phantom lines in FIG. Has a rear face and a front face ridge 2 ', 2'having a triangular cross section, and the striking faces 2a, 2a can be used upside down.

The striking plate 2 is provided on one inner surface of the charging groove 6.
Is formed on the inner surface of the other side of the charging groove 6, and an inclined surface 6 "facing the front surface 2" of the striking plate 2 is formed.

The inclined surface 6 "is an inclined surface 6" whose upper portion is close to the front surface 2 "of the striking plate 2 and whose lower portion is far from the front surface 2".

The opening width W between the upper end of the inclined surface 6 "and the upper end of the receiving surface 6a of the one inner surface is formed to be larger than the vertical cross-section full width small w of the striking plate 2.

As shown in FIG. 1, the charging groove 6 is held upward, and the lower portion of the striking plate 2 which is horizontal from directly above the opening is directly inserted into the charging groove 6 by a wire rope of a crane or the like. It is suspended and brought into close contact with the receiving surface 6a by the steel (ss) liner 13 which is attached to the inner surface of one side of the back projection 2'and the upper back surface 2b of the striking plate 2 with bolts 12.

In this state, the wedge block 7 is manually inserted into the space s of the rotor disk 3 and the disk 3
Further, it is laterally inserted between the inclined surface 6 ″ of the charging groove 6 and the lower front surface 2 ″ of the striking plate 2.

After that, the support block 9 is laterally inserted from the lower surface of the wedge block 7 and the bottom surface 6'of the charging groove 6 from the space s (from the side of the rotor disk 3) (see FIG. (A) (b) and FIG. 4 (a) (b) show the state).

The support block 9 has a bolt 1 extending downward from the upper surface.
0 is screwed in to form a fitting rotation hole 14 for the bolt head 10 ′ on the upper portion of the bolt hole 10 ″ of the block 9.
The upper surface of 0'supports the lower surface of the wedge-shaped block 7 (FIGS. 1 and 2 (a)).

A hexagonal hole 15 is formed on the upper surface of the bolt head 10 '.
Is formed in a concave shape, the lower end opening of a vertical through hole 7 ′ penetrating the upper and lower surfaces of the wedge-shaped block 7 is aligned with the hexagonal hole 15, and the wrench 8 inserted into the through hole 7 ′ is a hexagonal hole. Engaging 15
The handle 8'of the wrench 8 is gripped and rotated to rotate the bolt head 10 'to one side and raise it, whereby the wedge-shaped block 7 can be raised.

By raising the wedge-shaped block 7, the inclined surface 6 "of the charging groove 6 and the lower front surface 2" of the striking plate 2 can be sufficiently tightened and fixed.

The bolt head 10 'is rotated in the opposite direction by the wrench 8 to lower the bolt head 10' and the wedge-shaped block 7 to separate the wedge-shaped block 7 from the front surface 2 "and the inclined surface 6", and the supporting block. 9 and the wedge-shaped block 7 are manually moved laterally from the charging groove 6 into the space s by a human force and carried out of the machine, and in that state, the striking plate 2 is directly lifted above the charging groove 6 by a wire rope and a crane. It can be carried out of the machine.

The striking plate 2 carried out to the outside of the machine can be mounted in the charging groove 6 by vertically reversing the upper and lower striking surfaces 2a, 2a located at the point-symmetrical positions and performing the same operation as described above.

A disc spring 16 is interposed between the lower surface of the supporting block 9 and the bottom surface 6'of the charging groove 6, and the impact of the striking plate 2 and the slight tilting of the wedge-shaped block 7 due to the pushing-up and the upward movement. It is possible to cope with loosening of the bolt 10 due to impact.

In FIGS. 1 and 2, 17 is a lower surface washer of the wedge-shaped block 7, 18 is a dustproof ring, and 19 is a liner 13.
Is welded to the rotor disk 3 by a main holder fixed with bolts 12.

[0024]

Since the present invention is based on the method and apparatus described above, not only can the striking plate be vertically moved directly up and down on the rotor disk in the impact crusher to quickly and easily and sufficiently tighten and fix it, but also the rotor due to impact. There is little effect on the settling of the disc and damage on the striking plate, and there is an effect that durability and safety can be improved.

[Brief description of drawings]

FIG. 1 is a side view of an impact crusher of the present invention in a state where a striking plate is fixed.

FIG. 2A is an enlarged vertical sectional view taken along the line AA in FIG. (B) The figure is a perspective view of a wedge-shaped block and a support block.

FIG. 3A is a side view of the striking plate directly descending state. (B) The figure is a side view of the wedge-shaped block inserted.

FIG. 4A is a side view of the support block inserted. FIG. 6B is a side view of the repulsion plate tightened and fixed by the wedge-shaped block and the support block. FIG. 6C is a vertical cross-sectional view of the wedge-shaped block rising tightened state with a wrench.

FIG. 5 is an overall side view showing the inside of the machine box.

FIG. 6 is a plan view of a striking plate charging groove taken along line BB-B of FIG.

[Explanation of symbols]

1 machine box 2 striking board 2'back ridge 2 "front W opening width w maximum width 3 rotor disk 4 rotation axes 5 Repulsion plate 6 charging groove 6'bottom 6 "slope 7 wedge-shaped block 7'through hole 8 wrench 9 Support block 10 volts 10 'bolt head 11 Impact Crusher

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsugu             23, 958 Ariyasu, Shonai-cho, Kaho-gun, Fukuoka Prefecture               Kobukuro Manufacturing Co., Ltd. F-term (reference) 4D065 AA06 BB04 EC09

Claims (3)

[Claims] 1. A rotor disk, to which a striking plate is detachably mounted, is rotatably supported by a rotating shaft in a machine box, and a plurality of repulsion plates corresponding to the striking plate are provided, and the same outer periphery of the rotor disk is provided. In an impact crusher in which a charging groove for the striking plate is formed at each opening angle, the lower part of the striking plate is directly suspended into the charging groove from directly above the opening of the above-mentioned charging groove, and then a wedge-shaped block is formed. A striking plate fixing method in an impact crusher, characterized in that the striking plate is inserted laterally from the rotor disk between the charging groove and the striking plate, and the striking plate is fixed inside the groove with a wedge-shaped block. 2. A support block is inserted from the side of the rotor disk between the wedge-shaped block and the bottom surface of the charging groove, and the wedge-shaped block is attached to the bolt head of a bolt screwed vertically into the support block. A wrench is inserted into the vertically formed through hole, the wrench is engaged with the bolt head, and the wrench is rotated to raise the bolt head and the wedge-shaped block. The impact plate fixing method for an impact crusher according to claim 1, wherein the wedge-shaped block is clamped and fixed. 3. The impact crusher according to claim 1, wherein a receiving surface that engages with a rear projection of the striking plate is formed in a charging groove of the striking plate, and an inclined surface facing the front surface of the striking plate is formed. It is formed in the charging groove, the opening width between the inclined surface and the receiving surface is larger than the maximum width of the vertical cross section of the striking plate, and is inserted laterally between the inclined surface and the front surface. A wedge-shaped block is provided, and a support block is inserted laterally between the lower surface of the wedge-shaped block and the bottom surface of the charging groove. A bolt is screwed downward from the upper surface of the support block, and the wedge-shaped block is formed by the bolt. In an impact crusher that supports the lower surface of the block, the wedge-shaped block has a through hole bored from the upper surface thereof, and the wrench inserted into the through hole allows the bolt head of the bolt to rotate forward and backward and move up and down. Strike plate fixing device.