JP2002136884A - Cone Cave for Rotating Crusher - Google Patents

Abstract

(57) [Problem] To provide a cone cave of a rotary crusher capable of preventing occurrence of partial friction between an upper portion and a lower portion of an inner periphery. SOLUTION: A ring-shaped portion 3 near the upper end of the inner periphery is formed of a material having lower wear resistance than other portions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a corn cave for a rotary crusher.

[0002]

2. Description of the Related Art Conventionally, in a rotary crusher, as shown in FIG. 3, a cone cave 33 which forms a crushing chamber 32 in cooperation with a mantle 31 eccentrically oscillatingly moves is made of a wear-resistant cast steel or the like. It is formed of a single material having high wear (Japanese Patent Publication No. 62-61341, Japanese Patent Publication No. 63-110).
No. 1).

[0003]

However, in the conventional cone-cave 33 of the rotary crusher, since the wear resistance of each part of the inner circumference is uniform, the amount of wear of the inner lower part is increased by the wear accompanying the crushing. There is a problem that uneven wear which is larger than that of the above occurs. This uneven wear is caused by a difference in the degree of wear because the load at the time of crushing is low in the upper part and high in the lower part in the vertical direction of the crushing chamber. Mantle 31 and corn cave 3
In order to adjust the outlet gap of the crushing chamber 32 in accordance with the wear of No. 3, the two are relatively moved up and down (when the mantle is fixed, the cone cave is lowered as indicated by arrow A). When uneven wear of 33 occurs,
The dimensions of the original L ₁ and greater were biting opening becomes smaller and L _2, the processing capacity is lowered. In addition, if uneven wear occurs, the operation is interrupted, and a problem such as an increase in the bite opening due to gouging or a need for early replacement is caused.

Accordingly, an object of the present invention is to provide a cone cave for a rotary crusher capable of preventing uneven wear at the upper and lower portions of the inner periphery.

[0005]

In order to solve the above-mentioned problems, a corn cave of a rotary crusher according to the present invention is characterized in that a portion near a ring-shaped inlet at an upper portion of an inner periphery is more wear-resistant than other portions. It is characterized by being formed of a low material. It is preferable that the portion near the biting port is detachably fitted to a tapered portion formed on an upper portion of the inner periphery of the other portion and having a diameter that increases upward or downward.

[0006] In the cone cave of the above-mentioned rotary crusher, it is possible to make the abrasion loss in the vicinity of the bite opening caused by the crushing equal to that in the other portions. On the other hand, by making the portion near the biting opening detachable, when the corn cave becomes large, it becomes easier to manufacture as compared with the case where it is integrally formed with other portions by casting.

For the other parts, that is, the parts having a high load, a material of a material having high wear resistance, for example, a wear-resistant cast steel such as a high manganese cast steel is used, and a portion near the bite opening, that is, a load of the load is used. The low portion is made of a material having a lower abrasion resistance than the high load portion, for example, Hv = 30 in terms of hardness difference.
Use one that is about 0 lower. A bolt, a cotter, or the like is used for fitting the portion near the biting port to the tapered portion.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an example of an embodiment of a cone cave of a rotary crusher according to the present invention. The cone cave 1 is made of a material having a high wear resistance, for example, a wear resistant cast steel such as a high manganese cast steel, and has a tapered portion 2 having a diameter increasing upward at an inner peripheral upper portion.
The cone cable main body (other portion) 2 formed with a and a material having a lower wear resistance than the cone cable main body 2, for example, a material having a hardness difference lower than the cone cable main body 2 by about Hv = 300, and the taper of the cone cable main body 2. Part 2a
And a crushing surface 3b in the vicinity of the biting port connected to the crushing surface 2b on the inner circumference of the cone cable main body 2 is formed on the inner circumference, and the tapered portion 3a and the cone cable are formed. A ring 3 near the bite opening (portion near the bite) fitted to the cone cave main body 2 via the tapered portion 2a of the main body 2. The lower end of the inverted frustoconical hopper ring 4 is in contact with the upper end of the ring 3 near the biting port, and the flange 4a of the hopper ring 4 and the flange 2c of the cone cable main body 2 are connected by a plurality of bolts. -By being fastened with the nut 5, it is detachably fixed to the cone cable main body 2.

Cone cave 1 of a rotary crusher of the above construction
In this case, the amount of wear of the crushing surface 3b of the ring 3 near the bite opening caused by the crushing can be made equal to the amount of wear of the crushing surface 2b of the cone cave main body 2, so that
Uneven wear can be prevented from occurring at the upper and lower portions of the inner circumference of the device.

FIG. 2 is a longitudinal sectional view showing another embodiment of the rotary crusher according to the present invention. The cone cave 7 is made of a material having high wear resistance, for example, a wear-resistant cast steel such as high-manganese cast steel, and has a cone-cave body (other than a cone-cave main body) having a tapered portion 8a that expands downward at the upper portion of the inner periphery. Portion) 8 and a material having a lower abrasion resistance than the cone cable main body 8, for example, a material having a hardness difference lower than the cone cable main body 8 by about Hv = 300, and a taper portion 9 a corresponding to the taper portion 8 a of the cone cable main body 8 is formed. In addition to being formed on the outer periphery, it has a ring shape in which a crushing surface 9b near the biting port connected to the crushing surface 8b on the inner periphery of the cone cable main body 8 is formed on the inner periphery, and its tapered portion 9a and the tapered portion 8a of the cone cave main body 8 are formed. And a ring 9 near the bite port (portion near the bite port) 9 fitted to the corn cave main body 8 via the main body. The ring 9 near the bite opening is formed by inserting a cotter 10 through a plurality of recesses 9c provided on the outer periphery thereof, through the through holes 8c provided in the cone cable main body 8 in correspondence with these recesses 9c. , Is detachably fixed to the corn cave body 8.

[0011] Cone cave 7 of the rotary crusher having the above-mentioned structure.
In this case, the operation and effect are almost the same, except that the fitting direction of the ring 9 around the bite opening 9 with respect to the cone cable main body 8 and the fixing means are different from those of the above-described embodiment.

In both of the above embodiments,
The case where the cone cable main bodies 2 and 8 and the ring 3 near the biting port are separated from each other and are fixed to each other via the tapered portions 2a, 3a, 8a and 9a, the bolts and nuts 5, and the cotter 10 has been described. However, when the cone cables 1 and 7 are small, they may be integrally formed by cast-in casting or the like.

[0013]

As described above, according to the cone cave of the rotary type crusher of the present invention, it is possible to make the amount of wear in the vicinity of the bite opening accompanying crushing equal to that of the other portions. Therefore, it is possible to prevent uneven wear at the upper and lower portions of the inner circumference.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an example of an embodiment of a cone cave of a rotary crusher according to the present invention.

FIG. 2 is a longitudinal sectional view showing another example of the embodiment of the cone cave of the rotary crusher according to the present invention.

FIG. 3 is an explanatory view showing an operation of a corn cave of a conventional rotary crusher.

[Explanation of symbols]

 2 Cone Cave Body (Other Parts) 2a Taper Part 3 Ring near Claw Port (Portion Near Catch Port) 3a Taper Part 4 Hopper Ring 5 Bolt / Nut 8 Cone Cave Body (Other Parts) 8a Tapered Part 9 Near Claw Port Ring (portion near the bite) 9a Tapered part 10 Cotter

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideaki Hoshino 1780 Kamikono, Yachiyo-shi, Chiba Kawasaki Heavy Industries Ltd.Yachiyo Plant (72) Inventor Hikaru Nakao 1780 Kamikono, Yachiyo-shi, Chiba Kawasaki Heavy Industries, Ltd. F term in Yachiyo factory (reference) 4D063 BB06 BB18 GA07

Claims (2)

[Claims] 1. A cone cave for a rotary crusher, wherein a portion near a ring-shaped inlet at an upper portion of an inner periphery is formed of a material having lower wear resistance than other portions. 2. The device according to claim 1, wherein the portion near the biting port is detachably fitted to a tapered portion formed at an upper portion of an inner periphery of the other portion and having a diameter increasing upward or downward. A corn cave for the rotary crusher according to 1.