JPH07114978B2 - Liner for cone crusher - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cone cave liner and a mantle liner of a cone crusher for producing coarse aggregate and fine aggregate used for concrete and asphalt mixture.

[Prior Art] Conventionally, this type of cone crusher liner has a pair of upper and lower liner shapes that form a crushing chamber that is considered to perform the most preferable crushing action, that is, a combination of the shape of the cone cave liner and the shape of the mantle liner. It was designed basically. Therefore, the preferable shape of the crushing chamber was gradually lost with the aging of the liner due to wear, and the crushing ability was lowered and other obstacles occurred.

For this reason, it is necessary to take life-prolonging measures such as selecting a liner made of wear-resistant material as a countermeasure against wear.Use wear-resistant cast steel, or use a material with a higher hardness to further improve wear resistance. Was.

[Problems to be Solved by the Invention] Although the above-mentioned materials with increased hardness have very high wear resistance, they are fragile to impact and often crack during use. Therefore, in order to improve this brittleness, it is the current situation that hardness is reduced to some extent and a sticky material is used, but in this case, the raw material is directly chewed as the use changes with time. Although the part to be shredded and crushed is worn, the upper and lower liners, that is, the outer peripheral lower ends of the cone cave liner (upper side) and the mantle liner (lower side), are repeatedly hit. And then flip over to the lower end of the liner The deformed portion of the material was generated, which hinders the passage and dropping of the raw material to reduce the crushing effect and hinders the removal work when the liner is replaced.

[Means for Solving the Problems] In order to solve the above problems, in the present invention, in the cone cave liner and the mantle liner forming the crushing chamber of the cone crusher, at least one of the cone cave liner and the mantle liner is used. Of the outermost peripheral lower end of the side inclined surface over the entire circumference of at least one or more,
An annular groove having a rectangular vertical cross section was provided.

[Operation] Since the liner for cone crusher of the present invention is constructed as described above, it is caused by the progress of wear. The tongue-shaped deformed part due to has a groove at the place where it just occurs, so it does not peel off and grow large. That is, the annular groove having the rectangular vertical cross-sectional shape provided in the present invention is provided in order to facilitate break-off of the tongue-like deformed product.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the present invention. FIG. 1 is an enlarged cross-sectional view of a main part of a cone cave liner. FIG. 1 (a) shows a state when it is new, and FIG. 1 (b) shows The state at the time of wear is shown. FIG. 2 is an enlarged cross-sectional view of a main part of a mantle liner, FIG. 2 (a) shows a state of a new product, and FIG. 2 (b) shows a state of wear. Further, FIGS. 3 to 4 show an embodiment of a conventional cone crusher, FIG. 3 is an overall vertical sectional view of the cone crusher, FIG. 4 is an enlarged sectional view of an essential part, and FIG. FIG. 4B shows the state when the liner is new, and the state when the liner is worn (immediately before replacement).

In the figure, 1 is a counter shaft, 2 is a bevel gear,
3 is eccentric, 4 is a main shaft, 5 is a mantle, 6 is a cone cave, 7 is a crushing chamber, 8 is a mantle liner, and 9 is a cone cabeler.

Next, the operation of the cone crusher of the present invention will be described.

When the counter shaft 1 is driven by a V-belt by an electric motor (not shown), the eccentric 3 is rotationally driven through the bevel gear 2, and the main shaft 4 that is fitted into the eccentric 3 from a slightly diagonal direction vertically rotates while performing eccentric motion. . Therefore, the mantle 5 integrated with the main shaft 4 also performs the eccentric rotational movement.
With the rotation of this mantle 5, the cone-shaped mantle 5
The mantle liner 8 attached to the outer peripheral part of the machine moves up and down at the same time while rotating, and the raw material is crushed in the crushing chamber 7 which is a space formed by the lower surface of the cone cable liner 9 attached to the fixed cone cable 6. Is crushed.

A pair of upper and lower liners, cone cone liner 9 and mantle liner 8, which come into contact with these raw materials and compress and crush the raw materials are made of wear-resistant materials, and can be replaced when the wear reaches the limit. It has a structure.

As described above, the cone liner 9 and the mantle liner 8, which are a pair of upper and lower liners, have particularly high wear resistance. Therefore, when a material having high hardness is used, brittleness is increased. However, it must be replaced by the end of the wear resistant life, which is uneconomical.

For this reason, it is the actual situation that the damage accident is prevented by lowering the hardness to some extent and sacrificing a little abrasion resistance, and using a viscous material. However, in this case, as shown in FIG. 4 (b), as the corn crusher 9 and the mantle liner 8 are worn, the wear of the cone outer edge of the cone cabeler 9 and the mantle liner 8 may progress as the cone crusher changes over time. Tongue-shaped deformed portions A and B are generated. This is due to the spreadability of the metal Is a phenomenon of. When the deformed parts A and B gradually grow, the ideal crushing space shape formed by the combination of the pair of upper and lower liners when the liner is new at the beginning of operation is impaired, and the crushing efficiency decreases, and during crushing or during crushing. This hinders the passage and discharge of the subsequent raw materials and adversely affects the crushing work, and also hinders the replacement work when replacing the liner.

Therefore, in the present invention, the cone cabling 9 and the mantle liner 8 are shown in FIG.
As shown in FIG. 2 (a), grooves 9a, 8a having one or a plurality of rectangular longitudinal sections (two grooves in the embodiment of FIGS. 1 and 2) were formed.

By making such a shape, In the process of development and growth even if occurs, it cuts and falls off at these grooves 9a and 8a, without forming a tongue-like deformed portion as shown in FIGS. 1 (b) and 2 (b). An almost smooth crushed surface can be maintained.

Therefore, the above-mentioned inconvenience, that is, the passage or discharge of the raw material is not hindered, the reduction of the crushing efficiency can be minimized, and the liner replacement work can be easily performed.

[Effects of the Invention] The liner for cone crusher of the present invention has a rectangular longitudinal cross section having at least one or more threads over the entire circumference on the side inclined surface of the outermost peripheral lower end of one or both of the liner for cone cave and the liner for mantle. Since the annular groove having a shape is provided, it is possible to prevent a large growth of the tongue-shaped deformed portion due to aging even if a flexible and wear-resistant cast steel having a tenacity is used. Therefore, the reduction of the crushing effect is prevented, the passage and dropping of the raw materials are not hindered, the liner replacement work is easy, and the maintainability is excellent.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention, and FIG. 1 is an enlarged cross-sectional view of a main part of a cone cave liner. FIG. 1 (a) is a state when it is new, FIG. 1 (b) Indicates the state at the time of wear. FIG. 2 shows an enlarged cross-sectional view of a main part of the mantle liner, FIG. 2 (a) shows a state of a new product, and FIG. 2 (b) shows a state of wear. 3 to 4 show an embodiment of a conventional cone crusher, FIG. 3 is an overall vertical sectional view, FIG. 4 is an enlarged vertical sectional view of an essential part, and FIG. The state, FIG. 4 (b), shows the state during wear. 1 ... Counter shaft, 2 ... Bevel gear, 3 ... Eccentric, 4 ... Main shaft, 5 ... Mantle, 6 ... Cone cave, 7 ... Crushing chamber, 8 ... Mantle liner (mantle liner), 8a ...... Groove (annular groove),
9 …… Cone cave liner (corn cave liner),
9a: Groove (annular groove), A, B: Tongue-shaped deformed portion.

Claims (1)

[Claims] 1. A liner for a cone cave and a liner for a mantle forming a crushing chamber of a cone crusher, in which at least one line is formed on the side inclined surface of the outermost peripheral lower end of at least one of the liner for the cone cave and the line for the mantle. A liner for a cone crusher provided with an annular groove having a rectangular vertical cross-sectional shape as described above.