JP2571168B2 - Method of manufacturing tooth plate for 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 tooth plate (mantle, cone cave) for a rotary crusher such as a cone crusher or a gyre crusher, and more particularly to a method of manufacturing a tooth plate having excellent wear resistance and crushability. About.

[0002]

2. Description of the Related Art Conventionally, the tooth plate of this type of rotary crusher is
In order to improve the bite of the processed material, for example, the mantle of the cone crusher has the same shape as the generatrix on the outer peripheral surface of the mounting cone-shaped mantle forming a crushing chamber having a wedge-shaped cross section together with the mounting inverted cone-shaped cylindrical cone cable. This is a groove-type tooth plate having a number of grooves 9 in each direction (Japanese Patent Publication No. 3-50580).

[0003] As the rotary crusher is operated for a long period of time, wear of the tooth plate is generated and the crushing gradually progresses. As a necessary condition of the groove-type tooth plate, the groove needs to be formed in a deep groove shape having a narrow width so that the tooth plate can have the function of the groove-type tooth plate up to a wear limit which is a limit at which abrasion can be allowed. There is.

[0004]

However, the method of manufacturing the tooth plate of the conventional rotary crusher, particularly the mantle, is as follows.
It is made of a material having high wear resistance, for example, a high manganese cast steel containing 13% by weight or more of manganese. However, in order to form the groove with a narrow width and a deep groove, various restrictions such as molding ( Draft, strength of foundry sand, baking, etc.), there is a problem that it is difficult to manufacture by casting into a required shape. For this reason, the crushing performance of the tooth plate such as biting of the processed material is not good, and the tooth plate cannot be used as it is.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and satisfies the conflicting characteristics between the manufacture of a wear-resistant tooth plate and the crushing performance. It is an object of the present invention to provide a method capable of producing a tooth plate of a rotary crusher having both easiness and crushability.

[0006]

To SUMMARY OF THE INVENTION To the problem solving, in the present invention, the cavity having upper and lower molds of the mold a plurality of embedded member made from a less wear-resistant material in the strip material It is fixed almost oriented radially, the embedded member from material having high wear resistance than the embedded member
The present invention is characterized in that a tooth plate in which a buried member is buried by casting with a molten metal is cast. In the present invention, the upper mold of the mold
Into a band-shaped material in the cavity consisting of
Multiple buried members made of low-wear materials are placed almost radially
And the embedded member is in direct contact with the workpiece
To be aligned with the outer surface of the tooth plate
The buried member has a higher wear resistance than the buried member.
Teeth cast with a metal melt made of material and embedded with embedded members
It is characterized by casting a plate.

[0007] According to the above means, the tooth plate of the rotary crusher wears due to crushing of the processed material due to prolonged operation.
Although the thereby, buried consisting wear-resistant material having low
The member is made of a material having higher wear resistance than the buried member.
Generates more wear than the tooth body
Of the buried member
Corresponds to the thickness of the strip between adjacent parts of the tooth plate body
A groove-like abrasion step is formed, moreover, the wear of the tooth plate progresses
It is extended, since the abrasion step is continuously maintained, punished
A tooth plate of a rotary crusher having both excellent wear resistance and crushability for crushing a physical material can be manufactured.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a mantle of a rotary crusher obtained according to an embodiment of the present invention, FIG. 2 is a plan view of the mantle, and FIG. 3 is an explanatory view showing a casting method used in the method of the present invention. FIG. 4 is an enlarged sectional view of a main part showing another embodiment of the present invention, in which members common to those shown in FIGS.

[0009] 1 and 2, the mantle 1 has high abrasion resistance material, for example a frusto-cone shaped teeth plate body made of high manganese cast steel containing 13% or more by weight of manganese, the process On the outer surface of the tooth plate main body 2 which comes into direct contact with the object, a plurality of buried members 3 made of a material having low wear resistance, for example, a general rolled steel material, etc., are formed in a strip in the same direction as the bus bar and in the circumferential direction. It is buried by a parcel. The buried member 3 is directed substantially radially from the center of the mantle 1.
The tooth plate body is disposed so as to coincide with the outer surface .

In FIG. 3, reference numerals 4 and 5 denote an upper mold and a lower mold, respectively, and have mating surfaces 6 respectively. As a mold, for example, a sand mold or the like is used. Upper mold 4
The lower mold 5 and the lower mold 5 are respectively formed using a model not shown, and a cavity 10 of the tooth plate 2 is formed between the upper mold 4 and the lower mold 5. In the cavity 10, that is, on the inclined surface of the lower mold 5, the embedded member 3 having a required shape and dimensions is radially fixed substantially in a radial direction from the center of the tooth plate 2. At this time, the end of the embedded member 3 is made to coincide with the mating surface 6 together with the end of the tooth plate main body 2, and the embedded member 3 maintains a uniform pitch in the circumferential direction of the tooth plate main body 2. A conventional fixing means, such as a nail, is used to fix the sloping surface so that the sloping surface is held at right angles without tilting. Numeral 8 denotes a basin provided in the mold, which is connected to a cavity 10 through a vertical gate 8a and a runner 9. The shape, size and number of each part of the gate system are such that the molten metal is cast at a required speed in consideration of the size and thickness of the tooth plate main body 2 and the casting of the embedded member 3. Further, the gate system is connected to the end of the cavity 10 so as to be surely filled with the molten metal at the time of pouring.

Reference numeral 11 denotes a feeder provided in a mold, which communicates with a casting portion in the cavity 10. For the hot water,
For example, it is also possible to prevent cooling from above by using a heat insulating material or a heat generating material. Then, a sufficient amount of molten metal is supplied to the casting portion in the cavity 10 by the riser to adjust the solidification process so that a riser effect can be obtained.

Thus, the embedded member 3 is cast and buried in the tooth plate main body 2 by the molten metal of the embedding member 3, and is disposed on the outer surface of the tooth plate main body 2 which is in direct contact with the workpiece in the circumferential direction with respect to the generatrix and in the circumferential direction. The embedding member 3 is disposed so as to be directed substantially radially from the center of the mantle 1 so as to coincide with the outer surface of the tooth plate main body 2. And the tooth plate is
However, the buried member 3 made of a material having low abrasion resistance may cause wear due to longer operation.
3 compared to the tooth plate body 2 made of a material having higher wear resistance than
The outer surface of the tooth plate is uneven because it causes a lot of wear
Specifically, the tooth plate body 2 is provided on the outer surface of the embedded member 3.
A groove-shaped wear step corresponding to the thickness of the band-shaped material is formed between adjacent parts, and even if wear of the tooth plate progresses, the wear step is continuously maintained . Crushed
It is possible to manufacture the dental plate excellent in abrasion resistance and fracture resistance and gyrating crusher having both for.

In FIG. 4, a buried member 3 'of another embodiment is shown.
Is machined by providing a projection 3'a on the side of one end thereof. After the molding of the lower mold 5, the embedded member 3 ′ moves the projection 3 ′ a to the corner 5 a near the mating surface 6 of the lower mold 5.
And is fixed radially on the slope of the lower mold 5 so as to be hung. Further, if necessary, the above-mentioned fixing means is used in combination for fixing. Thus, since the embedded member 3 'is securely fixed to the lower mold 5, the tooth plate main body 2 is embedded and embedded in the tooth plate main body 2 with an accurate dimension when the molten metal is embedded in the tooth plate main body 2. The member 3 'can be embedded. The protruding portion 3'a is connected to the tooth plate main body 2.
Is machined so as to be cut off after casting, and the outer surface of the tooth plate main body 2 is formed as a smooth surface.

In this way, the shape, thickness, arrangement pitch and the like of the burying members 3, 3 'can be freely changed in accordance with the crushing conditions, and the tooth plate body 2 has a narrow deep groove. As a result, a tooth plate of a rotary crusher having an optimum shape for the crushing action can be manufactured.
In the above-described embodiment, the case where the present invention is applied to a mantle has been described. However, it is needless to say that the present invention can be applied to a corn cave.

[0015]

As described above, according to the present invention, according to the present onset Akira,
The tooth plate of the rotary crusher wears due to prolonged operation.
It is made of material with low wear resistance
The buried member is made of a material having higher wear resistance than the buried member.
Because it generates more wear than the tooth plate body
On the outer surface of the installation member, a band-like material is
Groove wear step corresponding to the thickness is formed, moreover,
Even if the wear of the tooth plate progresses, this wear step is continuously maintained, and a tooth plate having an optimal shape for the crushing action is obtained,
It is possible to manufacture a tooth plate of a rotary crusher having both excellent wear resistance and crushability by satisfying the conflicting characteristics between the production of the wear-resistant tooth plate and the crushing performance.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a mantle of a rotary crusher obtained according to an embodiment of the present invention.

FIG. 2 is a plan view of the mantle.

FIG. 3 is an explanatory view showing a casting method used in the method of the present invention.

FIG. 4 is an enlarged sectional view of a main part showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mantle 2 Tooth plate main body 3 Embedded member 4 Upper die 5 Lower die 10 Cavity

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideyasu Asamura 1780 Kamikono, Yachiyo-shi, Chiba Kawasaki Heavy Industries Ltd. Yachiyo Plant (56) References JP-A-60-221166 (JP, A) JP-A Sho 60-82264 (JP, A) Japanese Utility Model Showa 57-35751 (JP, U) Japanese Utility Model Showa 57-174566 (JP, U)

Claims (2)

(57) [Claims] To 1. A cavity having upper and lower molds of the mold to a strip material oriented to thereby fix the substantially radially a plurality of embedded member made from a less wear-resistant material, the said embedded member Use a material that is more wear resistant than the
And casting a tooth plate in which a buried member is embedded by casting with a molten metal. 2. A cavity comprising an upper mold and a lower mold of a mold.
Inside the machine, a plurality of strips made of a material with low abrasion resistance
The embedding member is fixed in a substantially radial direction.
The mounting member matches the outer surface of the tooth plate body that is in direct contact with the workpiece
And the embedded member is embedded in the embedded portion.
Cast metal into a molten metal made of a material with higher wear resistance than
It is characterized by casting a tooth plate in which the wrapping member is embedded.
A method of manufacturing a tooth plate for a rotary crusher, comprising: