JP2820890B2 - Mantle or concave for swirling 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 mantle or a concave for a rotary crusher such as a cone crusher and a method of manufacturing the same. It relates to a mantle or concave for an easily oscillating crusher.

[0002]

2. Description of the Related Art FIG. 5 shows a cone crusher. The cone crusher includes a mantle 1 fixed to a head center 2 of a main shaft 3 and a concave 4 fixed to a concave support 5 of a machine main body. The main shaft 3 is eccentrically swiveled by a driving device to rotate the mantle 1 and the concave 4. Crushing ore such as iron ore supplied between.

In the above-mentioned cone crusher, as a method of fixing the mantle 1 to the head center 2 and fixing the concave 4 to the concave support 5, a metal touch method or a filling material injection method is adopted.

In the metal touch method, for example, the mantle 1 will be described as an example with reference to FIG. 6, and the contact surface 8 between the inner peripheral surface 6 of the mantle 1 and the outer peripheral surface 7 of the head center 2 is machined to the same angle to form a metal. In this method, the surfaces are fixed to each other. In this case, the concave 4 is also fixed to the concave support 5 in the same manner.

[0005] Fillers injection method, for example when the mantle 1 will be described with reference to FIG. 7 as an example, the mantle 1 to the head center 2
Is mounted, the inner peripheral surface 6 of the mantle 1 and the outer peripheral surface 7 of the head center 2 are used as contact portions.
So that the contact surface 8 remains in a short area on the outer edge side of the mantle 1
A method of fixing by injecting solidifying the filler material 10 to the inner peripheral surface 6 recesses 9 which is a form formed on the. In this case, the concave 4 is also fixed to the concave support 5 in the same manner, but in the case of the concave 4, a concave is formed on the outer peripheral surface of the concave 4 and a short-range contact surface on the lower side, and the concave is filled with a filler material. Is injected.

[0006]

In the case of fixing by the metal touch method, since the surface hardness of the mantle 1 and the concave 4 is higher than those of the head center 2 and the concave support 5, a long period of time is required. surface forming a contact surface 8 of the head center 2 and the concave support 5 by using, in particular the surface of the positions corresponding to both end portions of the contact surface 8 caused indentations worn. When the dent becomes large, the mantle 1 and concave 4
Therefore, the mantle 1 and the concave 4 are replaced after a predetermined amount of crushing is performed.
At this time, the dents are repaired by overlay welding or application of a putty agent (see Japanese Patent Application Laid-Open No. 59-29046), but overlay welding requires smooth finishing of the surface and sliding. Also, the application of the putty requires the surface finish and drying of the putty, all of which require a long repair period, during which the production activities must be stopped, which impairs the productivity of the crusher. There is. In addition, there is a method in which the contact surface 8 is made longer in the vertical direction so as not to cause a dent. .

On the other hand, in the case of fixing by the filler injection method, the filler layer 10 can be provided vertically long between the mantle 1 and the head center 2 and between the concave 4 and the concave support 5. As a result, the direct contact between the mantle 1 and the head center 2 and the direct contact between the concave 4 and the concave support 5 can be reduced and the contact surface through the filler layer 10 can be widened. Although it has the advantage of reducing damage such as dents that occur, it takes a long time for the filler to solidify, during which time production operations must be stopped as in the case of the metal touch method, which impairs the productivity of the crusher. There is a problem that said. In addition, when the filler is solidified, the filler shrinks, so that a small gap is formed around the entire circumference, and the contact surface 8 formed in a short range on the lower side comes into contact preferentially. The surface of the support 5 is damaged. In addition, the above gaps cause cracking and peeling of the solidified filler.

The present invention has been made in view of the above circumstances, and has as its object to minimize damage to the surface of a head center and a concave support, and to make installation and replacement relatively easy. An object of the present invention is to provide a mantle and a concave for a swing type crusher that can be replaced without stopping the crusher for a long period of time, and a method of manufacturing the same.

[0009]

In order to achieve the above object, a mantle for a rotary crusher according to the present invention comprises a filler layer on an inner peripheral surface except for a direct contact surface of the inner peripheral surface with a head center. Form
And a filler layer in advance
It is provided so as to protrude from the direct contact surface .

[0010]

The concave for a rotary crusher according to the present invention has a concave for forming a filler layer on the outer peripheral surface except for a surface of the lower outer peripheral surface which is in direct contact with the concave support.
In addition, a filler layer is provided in advance so as to protrude from the direct contact surface .

[0012]

[0013]

In the mantle or concave having the above structure, a filler layer swelling from the direct contact surface is formed in advance on the inner peripheral surface in the case of the mantle and on the outer peripheral surface in the case of the concave. Mounting on concave support
When swelling due to its own weight or surface pressure,
It can be installed without gaps by simple sliding,
In particular, in the case of replacement, the crusher has to be stopped in a short time, and the productivity can be improved. Further, since the filler layer can be mounted without a gap, cracking or peeling of the filler layer does not occur. In addition, since the direct contact range between the mantle and the head center and the metal between the concave and the concave support, which require processing accuracy, can be reduced, the processing cost can be reduced, and the filler layer can be formed longer in the vertical direction. The direct and indirect contact surfaces are widened, so that the mantle or the concave is better retained and the head center and concave support surfaces are less likely to be damaged.

[0014]

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same parts as those of the above-described conventional technology are denoted by the same reference numerals.

(Embodiment 1) FIG. 1 is an explanatory view of an apparatus applied to a method of manufacturing a mantle according to the present invention, wherein a is an entire longitudinal sectional view and b is a.
It is an X section enlarged view of. In the figure, 1 is a mantle, 1a is a mantle body, and 11 is a model of a head center whose upper surface 12 is formed to approximate the outer shape of the head center 2.

The mantle body 1a, along with recesses 16 for forming the filler layer 15 previously bulging from the straight contact surface 13 on the peripheral surface 14 inner excluding direct contact surface 13 is formed, the recess 16
An adhesive (not shown) is applied to the inner surface of the head center, and is mounted on the upper surface portion 12 of the model 11 of the head center and combined. Note that the depth h1 of the depression 16 is preferably 5 mm or more, more preferably 10 mm or more, in consideration of the ease of flow when the filler is injected.

The head center model 11 has a recess 17 having a depth corresponding to the amount of shrinkage of the filler formed above a portion of the upper surface portion 12 leaving a portion in contact with the direct contact surface 13 of the mantle body 1a. A release agent (not shown) is applied to the inner surface of 17. The depth h2 of the depression 17 is a depth corresponding to the amount of shrinkage of the filler, and the amount of shrinkage may be determined by the sum of the linear shrinkage of the filler, the thickness of the release agent, and + α. Or +
The α rather good even ones determined in consideration of the deformation amount due and surface pressure and strain during deformation amount and crushed by the surface pressure and the strain at a fixed to the head center 2, short solidified filler
It is important that it swells slightly from the direct contact surface 13.
You .

After assembling the mantle body 1a and the model 11 of the head center as described above, the upper end opening of the mantle body 1a is opened.
The filling material prepared in a molten state is injected into the space formed by the depressions 16 and 17 from 18. After the injection, leave it for several days until the filler hardens, and then cast the head center model 11
By removing, as shown in FIG. 2, directly to the inner surface
The mantle 1 having the filler layer 15 bulging from the contact surface 13 is manufactured.

The mantle 1 having the filler layer 15 is carried to an assembly site or a repair site of a crusher, and is assembled with the head center 2 by sliding. As described above, since the filler layer 15 is formed in advance on the inner peripheral surface of the mantle 1,
It can be easily assembled almost in the same manner as the metal touch system by site adjustment, and when the mantle 1 is replaced, the downtime of the crusher can be greatly reduced, and the productivity of the crusher can be improved. In addition, at the time of installation,
Since the swelled portion is compressed by the surface pressure, it can be mounted without a gap, so that cracking or peeling of the filler layer does not occur. The size of the direct <br/> Sawamen 13 between the head center 2 of the mantle 1 can be reduced machining costs because small. Further, since the filler layer 15 can be formed to be long in the vertical direction, the direct and indirect contact surfaces are widened, the holding performance of the mantle 1 is improved, and the surface of the head center 2 is hardly damaged.

(Embodiment 2) FIGS. 3A and 3B are explanatory views of an apparatus applied to a method of manufacturing a concave according to the present invention, wherein a is an overall vertical sectional view, and b is an enlarged view of a portion Y of a. . In the figure, 4 is concave,
4a is a concave body, and 19 is a concave support model in which the lower surface portion 20 is formed to approximate the outer shape of the concave support 5.

In the concave body 4a, a depression 24 for forming a filler layer 23 swelling from the direct contact surface 21 is formed in an outer peripheral surface 22 excluding the direct contact surface 21 in advance.
An adhesive (not shown) is applied to the inner surface of the 24, and the lower surface 20 of the concave support model 19 is placed and combined. The depth H1 of the depression 24 is preferably 5 mm or more, more preferably 10 mm or more, in consideration of the ease of flow when the filler is injected.

The concave support model 19 has a lower surface 20
A concave portion 25 having a depth corresponding to the amount of shrinkage of the filler is formed above the concave portion 25, leaving a portion in contact with the direct contact surface 21 of the concave body 4a, and a release agent (not shown) is formed on the inner surface of the concave portion 25. Is applied. The depth H2 of the depression 25 is a depth corresponding to the contraction amount of the filler, and the contraction amount is obtained in the same manner as in the case of the depression 17 formed in the model 11 of the head center of the first embodiment. be able to.

After assembling the concave main body 4a and the concave support model 19 as described above, the concave support 24 is preliminarily prepared in a molten state in the space formed by the depressions 24 and 25 from the upper end opening 26 of the concave support model 19. Inject filled filler. After injection, leave for several days until the filler solidifies, then remove the concave support model 19,
As shown in FIG. 4, the concave 4 having the filler layer 23 on the inner surface is manufactured.

The concave 4 having the filler layer 23 is
The crusher is carried to an assembly site or a repair site, and is assembled by sliding with the concave support 5. in this way,
Since the filler layer 23 is formed in advance on the inner peripheral surface of the concave 4, it can be easily assembled almost in the same manner as the metal touch method by site adjustment.
In the case of replacing the crusher, the suspension period of the crusher can be greatly reduced, and the productivity of the crusher can be improved. Also of installation
When swelling due to its own weight or surface pressure,
In, it does not occur cracking and peeling of the filler layer because it can be attached without a gap. Further, since the size of the direct contact surface 21 of the concave 4 with the concave support 5 can be small, the processing cost can be reduced. Further, since the filler layer 23 can be formed to be long in the vertical direction, the direct and indirect contact surfaces are widened, the holding ability of the concave 4 is improved, and the surface of the concave support 5 is hardly damaged.

The filler used in the above embodiment is a material that melts at a relatively low temperature (20 to 30 ° C.) and has a linear shrinkage of 1
%, And for example, those using an epoxy resin or the like as a base material can be suitably used.

[0027]

As described above, with the mantle or concave for a rotary crusher according to the present invention, the surface of the head center or concave support is not damaged as much as possible, and mounting and replacement are relatively easy. In particular, in the case of replacement, the crusher can be replaced without stopping for a long period of time.

[0028]

[Brief description of the drawings]

FIG. 1 is an explanatory view of an apparatus applied to a method for manufacturing a mantle according to the present invention, wherein a is an entire longitudinal sectional view, and b is a
It is an X section enlarged view of.

FIG. 2 is a sectional view of a mantle according to the present invention, wherein
Is an overall view, and b is an enlarged view of S part of a.

FIGS. 3A and 3B are explanatory views of an apparatus applied to a method of manufacturing a concave according to the present invention, wherein a is a longitudinal sectional view of the whole, and b is an enlarged view of a Y part of a.

FIG. 4 is a sectional view of a concave according to the present invention ,
a is an overall view, and b is an enlarged view of a T portion of a.

FIG. 5 is a sectional view of a cone crusher.

FIG. 6 is a sectional view showing a state in which a conventional mantle is attached to a head center.

FIG. 7 is a cross-sectional view showing a state in which a conventional mantle is attached to a head center.

[Explanation of symbols]

1: Mantle 1a: Mantle body
2: Head center 4: Concave 4a: Concave body
5: concave support 11: head center model 12: top part 1
3: Direct contact surface 14: Inner peripheral surface 15: Filler layer 1
6, 17: hollow 18: upper opening 19: concave support model 20: lower surface 21: direct contact surface 2
2: Outer peripheral surface 23: Filler layer 24, 25: Depression 2
6: Top opening h1, h2, H1, H2: Depth of recess

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B02C 2/00-2/10

Claims (2)

(57) [Claims] 1. A recess for forming a filler layer is formed on an inner peripheral surface except for a surface of the inner peripheral surface which is in direct contact with a head center;
A mantle for a rotary crusher, characterized in that a filler layer is provided in the depression in advance so as to protrude from the direct contact surface. 2. A direct connection between the lower outer peripheral surface and the concave support.
Depression for forming a filler layer on the outer peripheral surface except for the contact surface
Is formed, and a filler layer is previously formed in the depression from the direct contact surface.
A swivel type crusher kink characterized by being provided in a swollen state.
Ave.