JP3168461B2 - Rotating crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary crusher used for crushing raw materials such as rocks and ores.

[0002]

2. Description of the Related Art A frustum-shaped mantle is eccentrically swirled in a truncated conical cylindrical concave that is removably fitted in the upper fuselage of an airframe, and raw materials such as rock and ore supplied from the upper part. Japanese Patent No. 2,735,767 discloses a rotary crusher for clamping and crushing between a concave and a mantle, in which the concave is held in an upper body.

[0003] This will be described with reference to FIG. 6. On the upper body 3, there are provided a plurality of support levers 8 which are swingable around a support point 8 a and whose base ends are fastened by fastening bolts 9. An annular flange 7a is provided on the outer periphery of the upper end of the concave 7 fitted into the upper body 3, and the tip of the support lever 8 is brought into contact with the lower surface of the annular flange 7a of the concave 7, so that the concave 7 is attached to the upper body 3. 3, the lower surface of the annular flange 7 a of the concave 7 is formed with a plurality of inclined surfaces intermittent in the circumferential direction, and the inclined surfaces are oriented in the turning direction of the mantle 6. It is inclined downhill.

In the above-described holding and fixing means for the concave, the inclined lower surface of the annular flange 7a of the concave 7 is formed by integrally attaching the gradient ring 10 shown in FIGS. If the ring 10 is as-cast, the inclination accuracy of the inclined convex portion 10a on the lower surface is insufficient, and it is necessary to grind the inclined lower surface and the upper surface of the distal end of the support lever 8 which comes into contact with the inclined lower surface.

In the above-mentioned concave holding and fixing means, the tip of the support lever 8 is positioned on the gradient convex portion 10a on the lower surface of the gradient ring 10 integrated with the annular flange 7a of the concave 7, or It is necessary to move the concave 7 side in the circumferential direction with respect to the distal end of the nozzle 8 to adjust the position of the gradient convex portion 10a, which takes a lot of time.

Further, in the above-described holding and fixing means for the concave, when the held and fixed concave 7 is removed, the concave 7 moves in the circumferential direction due to the reaction force generated when the raw material such as rock or ore is crushed. Since the support lever 8 cannot be released from the concave 7 and must be cut by a gas cutter in many cases, it takes a lot of time.

[0007]

SUMMARY OF THE INVENTION Therefore, according to the present invention, even if the lower surface of the annular flange of the concave is an as-cast surface and the distance from the supporting means is not uniform on the circumference, the distance can be easily adjusted without grinding. Accordingly, it is an object of the present invention to provide a rotary crusher capable of securely holding and fixing the concave and releasing the annular flange of the concave when removing the concave.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a rotary crusher according to the present invention has a frusto-conical cylindrical shape which is detachably fitted into an upper fuselage of a vehicle body and has an annular flange on an upper outer periphery. In a rotating crusher that eccentrically turns a frustoconical mantle to pinch and crush raw materials supplied from above in the concave, the convex is projected on the lower surface of the annular flange on the outer periphery of the upper part of the concave. A shim liner having a plurality of portions integrally provided in a circumferential direction, and a lower surface having an inclined surface facing the circumferential direction of the annular flange and facing downward in the axial center direction of the annular flange on the lower surface of the annular flange between the respective convex portions. The upper surface has an inclined surface facing the inclined surface of the lower surface of the shim liner between each of the shim liners and the upper edge of the inner peripheral surface of the concave support portion of the upper fuselage. Insert movable support blocks It is characterized in that the.

In the above-mentioned swiveling crusher, each support block is slidably fitted to a tip end side of a guide bolt which cannot be rotated by a restraining plate fixed to an inner peripheral surface of an upper portion of the concave support. At the back of the block, a holder is fitted in the middle of the guide bolt, and at the back of each holder, nuts that press the holder and move the support block forward are screwed into the middle of the guide bolt, and both sides of each guide bolt A hydraulic jack is provided between the holder and the restraining plate.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rotary crusher according to an embodiment of the present invention.
A main shaft 4 whose upper part is eccentrically rotated inside the lower body 2 and a pinion shaft 5 driven by a driving device (not shown) via a V-belt pulley 5 a provided at an outer end to rotate the main shaft 4.
And a conical cylindrical mantle 6 mounted on the head center 4 a of the main shaft 4 is eccentrically mounted in a truncated conical cylindrical concave 7 fitted in the upper body 3 of the body 1. By turning, raw materials such as rocks and ores supplied from above are pinched and crushed between the concave 7 and the mantle 6.

The upper body 3 is formed in a deformed cylindrical shape having a cylindrical fixed body portion 3a having a serrated screw on the inner periphery and a truncated cone-shaped concave fitting surface on the lower inner periphery and having a serrated screw on the outer periphery. And a concave support portion 3b screwed into the fixed body portion 3a so as to be vertically movable.

As shown in FIGS. 2 (a), 2 (b) and 2 (c), a concave support mechanism is provided below the annular flange 7a on the upper outer periphery of the concave 7 which is detachably fitted to the concave support portion 3b of the upper body 3. Is provided. That is, a plurality of protrusions 11 are provided on the lower surface of the annular flange 7a in the circumferential direction, and in this example, a total of twelve protrusions 11 are provided at predetermined intervals in the equilateral six directions. And, between each convex portion 11 in the six conformal directions, on the lower surface of the annular flange 7a,
As shown in FIGS. 3A, 3B, and 3C, a shim liner 14 having an inclined surface 12 facing the circumferential direction of the annular flange 7a and an inclined surface 13 facing the axial center of the annular flange 7a on the same lower surface is illustrated. 2 are arranged as shown in a, b, and c. The lower surface of the shim liner 14 is located between each of the shim liners 14 and the upper edge of the middle inner peripheral surface of the concave support portion 3b of the upper body 3.
As shown in FIGS. 4a and 4b, two inclined surfaces 15 and 16 are provided on the same upper surface so as to face the two inclined surfaces 12 and 13.
The support block 17 which can be moved in the radial direction of a is inserted as shown in FIGS.

More specifically, each of the support blocks 17 is formed between a pair of left and right guide walls 18 and 18 'integrally projecting upward from the upper edge of the inner peripheral surface of the intermediate portion of the concave support portion 3b. The guide plate 19 is disposed so as to be movable in the radial direction of the annular flange 7a, and a bolt insertion hole 20 is formed in the center of each of the support blocks 17 so as to extend horizontally through the annular flange 7a in the radial direction. As shown in FIGS. 5A and 5B, a bolt insertion hole 22 is formed in the center of the back surface of each support block 17 through a plurality of disc springs 21, and a guide projection 23 is formed in the middle of the lower surface. A wide holder 24 is arranged as shown in FIGS. 2A, 2B and 2C, and a guide projection 23 in the middle of the lower surface is fitted between the guide walls 18 and 18 '. A nut 26 is concentrically disposed at the opening of the bolt insertion hole 22 on the back surface of the wide holder 24 via a rectangular special washer 25, and a guide bolt 27 is threaded through the nut 26. Are inserted through the bolt insertion holes 22 of the holder 24 and the bolt insertion holes 20 of the support block 17. The guide bolt 27
Is sandwiched between restraining plates 28, 28 'fixed to the upper inner peripheral surface of the concave support portion 3b, and is non-rotatably restrained. A plurality of plates 29 and hydraulic jacks 30, 30 'are provided between the left and right sides of the wide holder 24 and the restraint plates 28, 28', respectively.

In FIG. 1, reference numeral 31 denotes an upper cover.
The upper cover 31 has its inner end in contact with the upper surface of the annular flange 7a of the concave 7 via the seal member 32, and is attached to the upper end of the concave support 3b so that the raw material supplied from above can be introduced into the concave 7 The introduction opening is formed and covers the entire support mechanism of the concave 7. The concave support portion 3b is rotated by a driving device (not shown) and moves up and down so that a crushing gap between the concave support portion 3b and the mantle 6 can be arbitrarily adjusted.

In the rotary crusher of the embodiment having the concave support mechanism configured as described above, the concave 7
Each support block 1 inserted between each shim liner 14 arranged between each convex portion 11 in the circumferential direction of the lower surface of the annular flange 7a and the upper edge of the inner peripheral surface of the middle support portion 3b of the upper body 3
7, the hydraulic jacks 30, 30 'are simultaneously operated to move the holder 24 forward, and press and advance the guide plate 19 in the radial direction via the disc spring 21, thereby tilting the upper surface of each support block 17. The surface 16 slides on the inclined surface 13 on the lower surface of the shim liner 14 and pushes up the annular flange 7a via the shim liner 14, and at the same time, the inclined surface 15 of the support block 17 slides on the inclined surface 12 on the lower surface of the shim liner 14. Then, as a result of further pushing up the annular flange 7a via the shim liner 14, the concave 7 is set on the concave fitting surface on the inner periphery of the concave support portion 3b. After that, tighten the nut 26 screwed into each guide bolt 27,
By pressing the holder 24, the inclined surfaces 15, 16 on the upper surface of the support block 17 are
13, the outer peripheral surface of the concave 7 is crimp-fixed to the concave fitting surface on the inner periphery of the concave support portion 3b, and the concave 7 is securely held. In fixing and holding the concave 7, even if the lower surface of the annular flange 7 a of the concave 7 is an as-cast surface and the interval between the concave block 7 and the support block 17 is not uniform on the circumference, the shim liner 14 is moved between the convex portions 11. The gap can be easily adjusted by moving in the circumferential direction and shifting the positions of the inclined surfaces 12 and 13 with respect to the inclined surfaces 15 and 16 of the support block 17.

Further, between the concave 7 and the mantle 6, the crushing and crushing of raw materials such as rocks and ores supplied from above is performed for a long time, so that the concave 7 and the concave supporting portion 3b of the upper body 3 are interposed. Looseness occurs, and the concave 7 starts rotating in the turning direction of the mantle 6 due to the reaction force of the crushing, and relative sliding in the circumferential direction occurs between the shim liner 14 provided on the lower surface of the annular flange 7 a and the support block 17. And the concave 7 is a circumferentially inclined surface 15 on the upper surface of the support block 17.
, And the concave 7 is fixed to the inner surface of the concave support portion 3b with a fixing force equivalent to the reaction force of the crushing, so that the nut 26 is not tightened and increased.
The resulting slack is autonomously tightened and corrected.

To remove the concave 7 from the concave support portion 3b during maintenance, the nuts 26 are loosened, the hydraulic jacks 30 and 30 'on both sides are reversely operated, and the holder 24 is retracted, and the support block is removed. 17
Is moved backward on the guide plate 19 so that the inclined surface 16 of the support block 17 is
3, the concave holding of the concave 7 is released, and the concave 7 is hung downward and removed from the concave supporting portion 3b.

[0018]

As can be seen from the above description, the rotary crusher according to the present invention is oriented in the circumferential direction of the lower surface of the annular flange on the upper outer periphery of the concave, in the circumferential direction of the annular flange, and in the axial center direction of the annular flange. A plurality of shim liners each having a downwardly inclined surface on the lower surface are arranged, and an inclined surface facing the inclined surface on the lower surface of the shim liner is formed between each of the shim liners and the upper edge of the inner surface of the concave support portion. Since the support block which is movable in the radial direction of the annular groove is inserted in each case, the lower surface of the annular flange of the concave is an as-cast surface, and even if the gap with the support block is not uniform circumferentially, the grinder is used. The gap can be easily adjusted by shifting the shim liner in the circumferential direction without finishing, and furthermore, the support block having the two-way inclined surface in the circumferential direction and the radial direction is advanced to move the shim liner through the shim liner. By pushing up the Jotsuba, concave can securely held and fixed. Further, when the concave is removed, the annular flange of the concave can be easily released by moving the support block to the outside of the annular flange, so that the concave can be easily removed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a rotary crusher of the present invention.

2 shows a concave support mechanism of the rotary crusher of the present invention, wherein a is a plan view, b is a sectional view taken along the line II of FIG. A, and c is a sectional view taken along the line II-II of FIG. It is an arrow view.

3 shows a shim liner in the concave support mechanism of FIG. 2, wherein a is a plan view, b is a front view, and c is a side view.

4A and 4B show a support block in the concave support mechanism of FIG. 2, wherein a is a front view, and b is a cross-sectional view taken along line III-III.

5A and 5B show a holder in the concave support mechanism of the concave of FIG. 2, wherein a is a front view and b is a bottom view.

FIG. 6 is a longitudinal sectional view showing an example of a conventional rotary crusher.

7 shows a gradient ring attached to a lower surface of an annular flange of a concave in the rotary crusher of FIG. 6, wherein a is a front view and b is a bottom view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 3 Upper fuselage 3b Concave support part 6 Mantle 7 Concave 7a Annular flange 11 Convex part 12 Circumferentially inclined surface 13 Incline inclined downward in the axial center direction 14 Shim liner 15 Circularly inclined surface 16 Axle Inclined surface facing upward toward the center 17 Support block 24 Holder 26 Nut 27 Guide bolt 28, 28 'Restraint plate 30, 30' Hydraulic jack

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideaki Hoshino 1780 Kamikono, Yachiyo-shi, Chiba Pref. Kawasaki Heavy Industries, Ltd. Yachiyo Plant (56) References JP-B-47-26811 (JP, B1) (58) Survey Field (Int.Cl. ⁷ , DB name) B02C 2/00-2/10

Claims (2)

(57) [Claims] 1. A frustum-cone-shaped mantle is eccentrically rotated in a truncated conical cylindrical concave having an annular flange on an upper outer periphery and removably fitted in an upper fuselage of an airframe to convey raw material supplied from above. In a rotating crusher that pinches and crushes between a mantle and a mantle, a plurality of protrusions are integrally provided in the circumferential direction on the lower surface of the annular flange on the upper outer periphery of the concave, and the lower surface of the annular flange is A shim liner having an inclined surface facing the circumferential direction of the annular flange and facing downward in the axial center direction of the annular flange on a lower surface, and an inner peripheral surface of each shim liner and an intermediate portion of a concave support portion of an upper body. A swingable crusher, characterized in that a support block having an inclined surface facing the inclined surface of the lower surface of the shim liner on its upper surface and movable in the radial direction of the annular flange is inserted between them. 2. The rotary crusher according to claim 1, wherein
Each support block is slidably fitted on the tip side of a guide bolt that has been made non-rotatable by a restraining plate fixed to the inner peripheral surface of the upper part of the concave support, and a holder is located on the back of each support block in the middle of the guide bolt. A nut that presses the holder at the back of each holder and moves the support block forward is screwed in the middle of the guide bolt, and between the holder and the restraint plate on both sides of each guide bolt. A rotary crusher having a hydraulic jack.