Wear bushing and cone crusher comprising same

Abstract

The utility model relates to a wear bushing and a cone crusher including the same. The wear bushing (10-b) includes a body (20) having a circumferential extension extending about a central longitudinal axis (25-b) and having a first elongate extension (22) from a first axial end (23) to a second axial end (24). The body (20) comprises a crushing surface (21) for contacting the material to be crushed. The crushing surface (21) is inclined with respect to the central longitudinal axis (25-b). The body (20) also has a wear resistant insert (30) embedded therein to reinforce the crushing surface (21). According to the present disclosure, the wear insert (30) has a second elongated extension (32) from the first end (33) to the second end, the elongated extension (32) of the wear insert (30) being arranged at an angle (alpha) to the normal (N) of the crushing surface (21).

Description

Technical Field

[0001] The present disclosure relates to a wear liner for a cone crusher. The present disclosure also relates to a cone crusher comprising at least one wear liner of the present disclosure. Background Art

[0002] Cone crushers and gyratory crushers are used to crush ore, mineral and rock materials to smaller sizes in a crushing gap between a fixed element and a moving element. Cone crushers and gyratory crushers typically include a head assembly as a moving element, which includes a crusher head or main shaft; and a bowl as a fixed element attached to the main frame of the cone crusher, or for larger gyratory crushers, a main frame that holds the recessed section. A gyratory pendulum motion is applied to the moving element, which moves around a vertical axis within the fixed element, which breaks up the rock, stone or other material as it passes through the crushing gap. The crushed material leaves the cone crusher or gyratory crusher through the bottom of the crushing gap.

[0003] The challenge faced by cone crushers and gyratory crushers is that the crushing process leads to excessive wear of the crushing surfaces that form the crushing gap. For this reason, both the moving element and the fixed element are equipped with wear bushings made of wear-resistant material (such as manganese steel) to form the crushing surfaces that define the crushing gap. The wear bushings for the moving element are usually called mantles or mantle bushings, while the wear bushings for the fixed element are usually called bowl bushings or concave bushings. It should be noted in this regard that the fixed element of the cone crusher, usually called the bowl, is fixed during the crushing process but can be moved in the vertical direction in order to be able to adjust the wear and loss of the wear surface, and this adjustment is usually done when no crushing is taking place. In a gyratory crusher, the fixed element is fixed at all times and the corresponding adjustment is carried out by moving the moving element (i.e. the crusher head) in the vertical direction or, for larger primary crushers, by moving the main shaft in the vertical direction.

[0004] In addition to the wear liner being made of a wear-resistant material, such as manganese steel, the wear liner may also include areas that have a higher wear resistance than the rest of the wear liner. This may be achieved by embedding wear-resistant inserts in the wear liner in these areas. However, even though the use of such wear-resistant inserts has improved the wear life of the wear liner, further improvements are still needed, particularly since implementing such wear-resistant inserts in the wear liner increases the cost of the wear liner.

[0005] Starting from this, the object of the present disclosure is to further increase the wear life of the wear bushings of cone crushers and gyratory crushers compared with what is disclosed in the prior art. Utility Model Content

[0006] According to a first aspect of the present disclosure, this and other objects are fully or at least partially achieved by a wear bushing for a cone crusher, the wear bushing comprising a body having a circumferential extension extending around a central longitudinal axis and having an elongated extension from a first axial end to a second axial end. The body comprises a crushing surface for contacting material to be crushed, the crushing surface being inclined relative to the central longitudinal axis. The body further comprises a wear-resistant insert embedded in the body to reinforce the crushing surface. According to the present disclosure, the wear-resistant insert has an elongated extension from a first end to a second end, and the elongated extension of the wear-resistant insert is arranged at an angle to the normal of the crushing surface.

[0007] The term "cone crusher" as used herein should be interpreted broadly to include gyratory crushers (including primary gyratory crushers) typically used for larger rocks and cone crushers typically used for smaller rocks.

[0008] The term "body" as used herein should be interpreted broadly to include a one-piece body and a body consisting of a plurality of bushing elements, which together form the body. Thus, according to some embodiments, the body of the wear bushing is provided as a single piece. According to some embodiments, the body of the wear bushing consists of a plurality of bushing elements.

[0009] The crushing surface of the body may have a continuous inclination relative to the central longitudinal axis, or it may be inclined at different angles relative to the central longitudinal axis at different parts of the body. It may also have a continuously varying inclination relative to the central longitudinal axis, for example it may be curved.

[0010] Wear inserts are in prior art arranged with the elongated extension aligned with the normal to the crushing surface.The phrase "a (or the) normal to the crushing surface" as used herein is part of common knowledge and is known to correspond to an angle of about 90°, ie perpendicular to the crushing surface.

[0011] By arranging the elongated extension of the wear insert at an angle to the normal to the crushing surface, the wear life of the wear bushing is improved. The angles of the elongated extensions of different wear bushings may be disordered and random, so that the angles of the elongated extensions of the wear bushings from the normal to the crushing surface are randomly distributed, so that the wear bushings are embedded in the body very irregularly. However, arranging the elongated extensions of the wear bushings at one or more preferred angles to the normal to the crushing surface may further improve the wear life of the wear bushing.

[0012] In a cone crusher wear bushing, the wear insert is typically fully embedded within the body but has a first end at or near the crushing surface of the wear bushing. As the wear bushing wears away during use, the material of the body (which may also be referred to as the matrix material of the body, which surrounds the wear insert) will begin to wear away, exposing the first end of the wear insert to the outside of the body. However, the wear insert may also be arranged and embedded in the body such that the first end of the wear insert extends to some extent outside the body prior to use and wear.

[0013] For the sake of sufficiency, an example of a main body material is steel, for example manganese steel (such as high manganese steel). Other examples of main body materials are cast iron, for example white cast iron, especially high chromium white cast iron, low alloy steel or mixtures thereof.

[0014] For the sake of sufficiency, examples of materials for the wear-resistant insert are steels, such as manganese steels (such as high manganese austenitic steels or low manganese steels), high chromium white cast irons, tool steels, cermets and metal matrix composites. Typically, the material used for the wear-resistant insert is more wear-resistant, in particular harder, than the material used for the main body. However, it is also possible to provide the wear-resistant insert with the same material as the main body. When the wear-resistant insert and the main body are provided by the same material (such as manganese steel), the material of the wear-resistant insert will be provided with a higher hardness than the material of the main body, thereby providing higher wear resistance. As described herein, the term "cermet" as used herein refers to a composite material consisting of a ceramic and a metal material, wherein the metal material occupies at most 20% by volume of the composite material, and the term "metal matrix composite" as used herein refers to a composite material consisting of a ceramic and a metal material, wherein the metal material occupies more than 20% by volume of the composite material.

[0015] For the sake of sufficiency, non-exhaustive examples of shapes of the wear resistant insert are cylindrical, rectangular and oval.

[0016] According to some embodiments of the wear bushing of the present disclosure, the angle to the normal to the crushing surface is in the range of 5°-45°, 8°-45°, 10°-45°, 16°-45° or 16°-30°. Arranging the elongated extension of the wear insert at an angle to the normal to the crushing surface in the upper half of the example range of 5°-45° (e.g., within 16°-45°) particularly increases the surface area of ​​the wear insert exposed to wear by the material to be crushed when the wear bushing is worn, thereby improving the wear resistance of the wear bushing.

[0017] According to some embodiments of the wear liner of the present disclosure, the elongated extension of the wear resistant insert is arranged at an angle to a normal to the crushing surface in a plane parallel to the central longitudinal axis and / or in a plane perpendicular to the central longitudinal axis.

[0018] According to some embodiments of the wear liner of the present disclosure, the wear resistant inserts are embedded in the body in a pattern at the crushing surface, wherein the pattern is formed by first ends of the wear resistant inserts, which are arranged at or near the crushing surface, and the first ends are arranged in rows aligned with the elongated extension of the body, and wherein the rows are arranged at a repeating distance around the circumferential extension of the body.

[0019] According to some embodiments of the wear liner of the present disclosure, the rows may be arranged such that the first ends of the wear inserts of different rows are aligned with each other in a plane perpendicular to the central longitudinal axis. In other embodiments of the wear liner of the present disclosure, the rows may be arranged such that the first ends of the wear inserts of adjacent rows are staggered such that the first ends of the wear inserts of every other row are aligned with each other in a plane perpendicular to the central longitudinal axis.

[0020] According to some embodiments of the wear bushing of the present disclosure, the wear insert is embedded in the body in a pattern at the crushing surface, wherein the pattern is formed by the first end of the wear insert, the first end is arranged at or near the crushing surface, the first end is arranged in a row aligned with the elongated extension of the body and distributed around the circumferential extension of the body, and wherein the row is arranged around the circumferential extension of the body with a repeating distance, and the repeating distance is regularly interrupted by a blank distance greater than the repeating distance. The blank distance can be repeated at least every 10th row, at least every 8th row, at least every 6th row, at least every 4th row, or at least every 3rd row. In addition, the blank distance can correspond to the distance (including its repeating distance) of at least one row to remove the wear insert. Providing a pattern with a blank distance allows to reduce the amount of wear inserts in the body, which is advantageous from a cost perspective. According to this exemplary embodiment, in combination with the wear insert having an elongated extension at a certain angle to the normal of the crushing surface, the wear resistance of the wear bushing is actually improved despite the reduction in the number of wear inserts.

[0021] Although the first ends of the wear resistant inserts in the body have a specific pattern, the elongated extensions of the wear resistant inserts may be arranged at an angle to the normal to the crushing surface, which angle may be disordered and random as described above, or may be one or more preferred angles in a plane parallel to the central longitudinal axis and / or in a plane perpendicular to the central longitudinal axis. It is also possible within the concept of the present disclosure to randomly provide the wear resistant inserts embedded in the body at the crushing surface without a specific pattern formed by the first ends of the wear resistant inserts arranged at or near the crushing surface.

[0022] According to some embodiments of the wear liner of the present disclosure, the wear liner is an outer wear liner, wherein the crushing surface is arranged at a radially inward surface of the wear liner, and wherein, during crushing, the outer wear liner is fixedly mounted in the cone crusher for interacting with a moving element of the cone crusher (e.g., a cone crusher head or a main shaft), the moving element being arranged to rotate about its own central axis in a first rotational direction.

[0023] The term "external wear bushing" as used herein refers to a wear bushing attached to the main frame of a cone crusher, arranged at a fixed element of the cone crusher, such as a fixed bowl or a concave segment. Thus, in one embodiment, the external wear bushing is a bowl bushing or a concave bushing.

[0024] As an outer wear liner, the elongate extension of the wear insert may be inclined towards the first axial end of the body in a plane parallel to the central longitudinal axis compared to the normal to the crushing surface. With such an orientation of the wear insert, during a crushing operation, any axial crushing forces acting on the wear insert at the crushing surface will more likely be absorbed in the direction of the elongate extension of the wear insert, in which direction the wear insert is well supported and embedded in the body. Having said that, the elongate extension of the wear insert does not necessarily have to be perfectly aligned with the direction of crushing forces acting on the wear liner to provide an improved wear life of the wear liner.

[0025] A further advantage of providing a wear insert having an orientation substantially aligned with the crushing forces acting on the crushing surface during use of the wear liner in a cone crusher is that an improved wear profile of the wear liner will be provided as the wear liner is worn, particularly around the wear insert. As the wear insert has an elongated extension at an angle to the normal to the crushing surface, the first end of each wear insert will be worn more evenly with the crushing surface. During use, as material of the body is worn away around the wear insert, the wear insert will protrude and expose an elliptical wear profile with smooth edges. This is in contrast to aligning the elongated extension of the wear insert with the normal to the crushing surface, as in the wear liner of the prior art cone crusher, exposing a substantially circular cross section as the wear liner is worn and the wear insert protrudes perpendicular to the crushing surface. The circular cross section thus protrudes perpendicular to the flow of crushed material, resulting in a build-up of material around the wear insert, further resulting in more severe wear of the wear liner.

[0026] Furthermore, as an outer wear bushing, the elongated extension of the wear resistant insert may be arranged at an angle to the normal to the crushing surface in a plane perpendicular to the central longitudinal axis and the first end of the wear resistant insert may be arranged at or near the crushing surface as a leading end with respect to the rotational direction of the interacting moving elements of the cone crusher during crushing operation.

[0027] As used herein, the phrase "leading end with respect to the direction of rotation of the interacting moving elements of the cone crusher during crushing operation" means that the first end of the wear insert is oriented so that the elongated extension of the wear insert can be more aligned with the impact forces acting on the outer wear liner in a plane perpendicular to the central longitudinal axis during crushing. Therefore, any crushing forces acting on the first end of the wear insert will be more likely to be absorbed in the direction of the elongated extension of the wear insert, in which direction the wear insert is well supported and embedded in the material of the body. This is in contrast to having the impact forces absorbed in the wear liner to encounter the surface along the elongated extension of the wear insert (which may cause shear stresses that may cause material to be dug out from the wear liner surface). Having said that, the elongated extension of the wear insert does not necessarily have to be completely aligned with the direction of the crushing forces acting on the wear liner to provide an improved wear life of the wear liner. As previously mentioned, arranging the wear insert to be substantially aligned with the impact forces acting on the crushing surface of the wear liner during crushing further provides an improved wear profile of the wear liner.

[0028] According to some embodiments of the wear liner of the present disclosure, the wear liner is an inner wear liner, wherein the crushing surface is provided at a radially outward surface of the wear liner, and wherein during a crushing operation the inner wear liner will rotate in a rotational direction about its own central longitudinal axis.

[0029] The term "inner wear bushing" as used herein refers to a wear bushing arranged on a moving element of a cone crusher, which moves inside a fixed element attached to the main frame of the cone crusher, and which rotates about a vertical axis. Thus, during the crushing operation, the inner wear bushing will rotate together with the moving element of the cone crusher in the direction of rotation about the vertical axis. Another term for such an inner wear bushing is a shell or a shell bushing. Thus, in one embodiment, the inner wear bushing is a shell or a shell bushing.

[0030] As an inner wear liner, the elongate extension of the wear insert may be inclined towards the second axial end of the body in a plane parallel to the central longitudinal axis compared to the normal to the crushing surface. With such an orientation of the wear insert, during a crushing operation, any axial crushing forces acting on the wear insert at the crushing surface will more likely be absorbed in the direction of the elongate extension of the wear insert, in which direction the wear insert is well supported and embedded in the body. Having said that, the elongate extension of the wear insert does not necessarily have to be perfectly aligned with the direction of crushing forces acting on the wear liner to provide an improved wear life of the wear liner.

[0031] As described with reference to the previous embodiments, a wear insert is provided having an orientation that is substantially aligned with the crushing forces acting on the crushing surface during use of a wear bushing in a cone crusher, which has the further advantage that an improved wear profile of the wear bushing will be provided as it wears, particularly around the wear bushing. As the wear bushing has an elongated extension at an angle to the normal to the crushing surface, the first end of each wear bushing will be worn more evenly with the crushing surface. During use, as material of the body is worn away around the wear bushing, the wear bushing will protrude and expose an elliptical wear profile with smooth edges, thereby providing an improved wear profile.

[0032] Furthermore, the wear liner is an inner wear liner, the elongated extension of the wear resistant insert may be arranged at an angle to a normal to the crushing surface in a plane perpendicular to the central longitudinal axis, and the first end of the wear resistant insert may be arranged at or near the crushing surface as a leading end with respect to a rotational direction of the inner wear liner during crushing operation.

[0033] As used herein, the phrase "leading end with respect to the direction of rotation of the inner wear liner during a crushing operation" means that during a crushing operation, the first end of the wear insert is oriented so that the elongated extension of the wear insert can be more aligned with the impact force acting on the inner wear liner in a plane perpendicular to the central longitudinal axis. Therefore, any crushing force acting on the first end of the wear insert will be more likely to be absorbed in the direction of the elongated extension of the wear insert, in which direction the wear insert is well supported and embedded in the material of the body. This is in contrast to causing the impact force to be absorbed in the wear liner to encounter the surface along the elongated extension of the wear insert (which may cause shear stresses that may cause material to be dug out from the wear liner surface). Likewise, having said this, the elongated extension of the wear insert does not have to be completely aligned with the direction of the crushing force acting on the wear liner to provide an improved wear life of the wear liner. As previously mentioned, arranging the wear insert to be substantially aligned with the impact force acting on the crushing surface of the wear liner during crushing further provides an improved wear profile of the wear liner.

[0034] According to a second aspect of the present disclosure, this and other objects are fully or at least partially achieved by a cone crusher comprising at least one wear liner according to any one of the above disclosed embodiments of the wear liner.

[0035] According to a third aspect of the present disclosure, this and other objects are fully or at least partially achieved by a method of producing a wear bushing for a cone crusher as disclosed herein. The method includes the steps of: providing a mold for casting the wear bushing therein; arranging a wear-resistant insert having an elongate extension at a surface of the mold corresponding to the crushing surface of the wear bushing; pouring molten matrix material into the mold such that the molten matrix material surrounds the wear-resistant insert; and allowing the matrix material to solidify, thereby obtaining a wear bushing that includes the wear-resistant insert bonded to the solidified matrix material, wherein the step of arranging the wear-resistant insert in the mold includes arranging the elongate extension of the wear-resistant insert at an angle to the normal of the mold surface.

[0036] According to a fourth aspect of the present disclosure, this and other objects are fully or at least partially achieved by a method of producing a wear bushing for a cone crusher as disclosed herein. The method includes the steps of: providing a body of the wear bushing; forming a hole in the crushing surface of the wear bushing for receiving a wear-resistant insert therein; and fixedly inserting a wear-resistant insert having an elongate extension into the hole, wherein the step of forming the hole includes forming an elongate extension of the hole that is at an angle to the normal of the crushing surface of the wear bushing such that when the wear-resistant insert is inserted into the hole, the elongate extension of the wear-resistant insert is at an angle to the normal of the crushing surface of the wear bushing.

[0037] The effects and features of the second, third, and fourth aspects are largely similar to the effects and features described above in connection with the first aspect. The embodiments mentioned with respect to the first aspect are largely compatible with the second, third, and fourth aspects. Further note that unless otherwise explicitly stated, the present inventive concept relates to all possible combinations of features.

[0038] Other objects, features, and advantages of the present disclosure will become apparent from the following detailed disclosure, the appended claims, and the drawings. It should be noted that the present disclosure relates to all possible combinations of features.

[0039] Generally, all terms used in the claims should be interpreted according to their ordinary meaning in the technical field, unless otherwise explicitly defined herein. Unless otherwise explicitly stated, all references to "a, an, the 'element, device, component, apparatus, step, etc.'" should be interpreted broadly as referring to at least one instance of the said element, device, component, apparatus, step, etc. Unless explicitly stated, the steps of any method disclosed herein need not be performed in the exact order disclosed.

[0040] As used herein, the term "comprising" and its variants are not intended to exclude other additives, components, integers, or steps.

[0041] The utility model provides a wear bushing for a cone crusher, comprising:

[0042] a body having a circumferential extension extending around a central longitudinal axis and having an elongated extension from a first axial end to a second axial end, said body comprising a crushing surface for contacting material to be crushed, said crushing surface being inclined relative to said central longitudinal axis, and

[0043] a wear-resistant insert embedded in the body to strengthen the crushing surface, wherein

[0044] The wear resistant insert has an elongated extension from a first end to a second end, the first end being arranged at or near the crushing surface, and wherein

[0045] The elongate extension of the wear insert is arranged at an angle to a normal to the crushing surface.

[0046] Preferably, the angle with the normal to the crushing surface is in the range of 5°-45°, 8°-45°, 10°-45°, 16°-45° or 16°-30°.

[0047] Preferably, the elongate extension of the wear resistant insert is arranged at an angle to a normal to the crushing surface in a plane parallel to the central longitudinal axis and / or in a plane perpendicular to the central longitudinal axis.

[0048] Preferably, the wear resistant inserts are embedded in the body at the crushing surface in the form of a pattern, wherein the pattern is formed by first ends of the wear resistant inserts arranged at or near the crushing surface, the first ends being arranged in rows aligned with the elongated extension of the body, and wherein the rows are arranged at a repeating distance around the circumferential extension of the body.

[0049] Preferably, the wear resistant inserts are embedded in the body at the crushing surface in the form of a pattern, wherein the pattern is formed by first ends of the wear resistant inserts, which are arranged at or near the crushing surface, arranged in a plurality of rows aligned with the elongated extension of the body and distributed around the circumferential extension of the body, and wherein the rows are arranged around the circumferential extension of the body with a repeating distance, the repeating distance being regularly interrupted by a blank distance greater than the repeating distance.

[0050] Preferably, the blank distance is repeated at least every 10th line, at least every 8th line, at least every 6th line, at least every 4th line or at least every 3rd line.

[0051] Preferably, said blank distance corresponds to the distance of at least one removed row of said wear resistant inserts, said distance comprising the repetition distance of said row.

[0052] Preferably, the wear bushing is an outer wear bushing, wherein the crushing surface is provided at a radially inner surface of the wear bushing, and wherein, during crushing, the outer wear bushing is fixedly mounted in the cone crusher for interaction with a moving element of the cone crusher, the moving element being arranged to rotate in a rotational direction about its own central axis.

[0053] Preferably, compared with the normal of the crushing surface, the elongate extension of the wear-resistant insert is inclined towards the first axial end of the body in a plane parallel to the central longitudinal axis.

[0054] Preferably, the elongate extension of the wear-resistant insert is arranged at an angle to the normal of the crushing surface in a plane perpendicular to the central longitudinal axis, and a first end of the wear-resistant insert at or near the crushing surface is arranged as a guiding end with respect to the rotational direction of the moving element during the crushing operation with respect to the interaction of the cone crusher.

[0055] Preferably, the wear bushing is an inner wear bushing, wherein the crushing surface is provided at a radially outer surface of the wear bushing, and wherein, during the crushing operation, the inner wear bushing will rotate in a rotational direction about its own central longitudinal axis.

[0056] Preferably, compared with the normal of the crushing surface, the elongate extension of the wear-resistant insert is inclined towards the second axial end of the body in a plane parallel to the central longitudinal axis.

[0057] Preferably, the elongate extension of the wear-resistant insert is arranged at an angle to the normal of the crushing surface in a plane perpendicular to the central longitudinal axis, and a first end of the wear-resistant insert at or near the crushing surface is arranged as a guiding end with respect to the rotational direction of the inner wear bushing during the crushing operation.

[0058] The present utility model provides a cone crusher, comprising at least one wear bushing as described above.

[0059] The present utility model provides a method for producing a wear bushing for a cone crusher, the method comprising:

[0060] Providing a mold for casting the wear bushing therein;

[0061] Arranging a wear-resistant insert having an elongate extension in the mold at a surface of the mold corresponding to the crushing surface of the wear bushing;

[0062] Pouring a molten matrix material into the mold such that the molten matrix material surrounds the wear-resistant insert; and

[0063] allowing the matrix material to solidify, thereby obtaining a wear liner comprising a wear resistant insert bonded to the solidified matrix material,

[0064] Wherein the step of arranging the wear resistant insert in the mould comprises arranging the elongate extension of the wear resistant insert at an angle to a normal to a surface of the mould.

[0065] The utility model provides a method for producing a wear bushing for a cone crusher, the method comprising:

[0066] providing a body of the wear bushing;

[0067] forming a bore in the crush surface of the wear liner for receiving a wear insert therein; and

[0068] fixedly inserting a wear-resistant insert having an elongated extension into the hole,

[0069] The step of forming a hole includes forming an elongated extension of the hole, the elongated extension being at an angle to a normal to the crushed surface of the wear liner, so that when the wear insert is inserted into the hole, the elongated extension of the wear insert is at an angle to the normal to the crushed surface of the wear liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The present disclosure will be described in more detail with reference to the accompanying drawings, which show examples of currently preferred embodiments of the present disclosure.

[0071] Figure 1 is a cross-sectional side view of an outer wear bushing and an inner wear bushing according to the prior art.

[0072] Figure 2 is a cross-sectional side view of an outer wear liner and an inner wear liner according to one embodiment of the present disclosure.

[0073] Figure 3 is a partial cross-sectional side view of an inner wear liner according to one embodiment of the present disclosure.

[0074] Figure 4 yes Figure 3 A partial cross-sectional top view of the inner wear bushing.

[0075] Figure 5 is a partial cross-sectional side view of outer and inner wear bushings according to yet another embodiment of the present disclosure.

[0076] Figure 6 is a partial cross-sectional side view of outer and inner wear bushings according to yet another embodiment of the present disclosure.

[0077] Figure 7a is a partial side view of a crush surface of an inner wear liner showing a pattern of wear inserts according to one embodiment of the present disclosure.

[0078] Figure 7b is a partial side view of a crush surface of an inner wear liner showing a pattern of wear inserts according to another embodiment of the present disclosure.

[0079] Figure 7c is a partial side view of a crush surface of an inner wear liner showing a pattern of wear inserts according to yet another embodiment of the present disclosure.

[0080] Figure 7d is a partial side view of a crush surface of an inner wear liner showing a pattern of wear inserts according to another embodiment of the present disclosure.

[0081] Figure 7e is a partial side view of a crush surface of an inner wear liner showing a pattern of wear inserts according to yet another embodiment of the present disclosure.

[0082] Figure 7f is a partial side view of a crush surface of an inner wear liner showing a pattern of wear inserts according to another embodiment of the present disclosure.

[0083] Figure 8a is a flowchart of a method according to an embodiment of the third aspect of the present disclosure.

[0084] Figure 8b is a flowchart of a method according to an embodiment of the fourth aspect of the present disclosure. DETAILED DESCRIPTION

[0085] The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the present disclosure are shown. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for completeness and completeness and to fully convey the scope of the present disclosure to those skilled in the art. Similar reference numerals refer to similar elements throughout.

[0086] Figure 1A cross-sectional side view of an outer wear bushing 10-a and an inner wear bushing 10-b according to the prior art is shown. The wear bushings 10-a, 10-b have a wear insert 30, the first end 33 of which is arranged at the crushing surface 21 of the body 20 of the wear bushings 10-a, 10-b. The elongated extension 32 of the wear insert 30 is arranged to be aligned with the normal N of the crushing surface 21 in both wear bushings 10-a, 10-b. Therefore, the elongated extension 32 of the wear insert 30 is arranged perpendicular (90°) to the crushing surface 21 in both wear bushings 10-a, 10-b.

[0087] Figure 2 A cross-sectional side view of an outer wear bushing 10-a and an inner wear bushing 10-b according to one embodiment of the present disclosure is shown. The wear bushings 10-a, 10-b each include a body 20 having a circumferential extension extending around a central longitudinal axis 25-a, 25-b and having an elongated extension 22 from a first axial end 23 to a second axial end 24. Each body 20 includes a crushing surface 21 for contacting the material to be crushed, the crushing surface 21 being inclined relative to the central longitudinal axis 25-a, 25-b. In this embodiment, the second axial end 24 has a larger diameter than the first axial end 23. Each body 20 also includes a wear-resistant insert 30 embedded in the body 20 to strengthen the crushing surface 21. According to the present disclosure, the wear-resistant inserts 30 each have an elongated extension 32 from a first end 33 to a second end 34, and the elongated extension 32 of the wear-resistant insert 30 is arranged at an angle α to the normal N of the crushing surface 21. As shown in FIG. Figure 2 As shown, the angles α of the elongated extensions 32 of the different wear-resistant inserts 30 are disordered and random, but all deviate from the normal N of the crushing surface 21. Figure 2 In the embodiment shown, the wear-resistant inserts 30 are irregularly embedded in the body 20. Figure 2 As shown, the arrangement of the wear insert 30 will improve the wear life of the wear bushings 10-a, 10-b. It is believed that the reason behind this is that when the crushing force acts on the crushing surface 21, the crushing force will be absorbed by the wear insert 30 along the elongated extension to different directions within the body 20, thereby making the crushing force uniform within the body 20. However, as disclosed above in the utility model summary, arranging the elongated extension 32 of the wear insert 30 at one or more preferred angles relative to the normal of the crushing surface 21 will also improve the wear life of the wear bushings 10-a, 10-b.

[0088] Figure 3 A partial cross-sectional side view of an inner wear liner 10-b according to one embodiment of the present disclosure is shown. Figure 3, it is shown how the elongated extension 32 of the wear insert 30 is arranged at an angle α to the normal to the crushing surface in a plane parallel to the central longitudinal axis 25-b. The angle α of the wear insert is selected so that the elongated extension 32 of the wear insert 30 is arranged more or less aligned with the direction of crushing forces acting on the crushing surface 21, which crushing forces encounter the axial flow of material along the crushing surface 21 in the direction from the first axial end 23 towards the second axial end 24 of the body 20. Therefore, the crushing forces acting on the first end 33 of the wear insert 30 will more likely be absorbed in the direction of the elongated extension 32 of the wear insert 30, in which direction the wear insert 30 is well supported and embedded in the material of the body 20.

[0089] Furthermore, as the wear bushing 10-b begins to become worn, the first end 33 of the wear insert 30 will wear more evenly with the crushing surface 21 and expose an elliptical wear profile with smooth edges. This is in contrast to aligning the elongated extension 32 of the wear insert 30 with the normal N of the crushing surface 21, as in prior art wear bushings 10-a, 10-b for cone crushers, where the first end 33 of the wear insert 30 protrudes perpendicularly to the crushing surface 21 as the wear bushings 10-b, 10-a wear. This causes material to accumulate around the protruding wear insert 30, resulting in more severe wear of the wear bushings 10-a, 10-b.

[0090] Figure 4 Shows along Figure 3 The section IV-IV is a partial cross-sectional view of a plane 45 perpendicular to the central longitudinal axis 25-b. Figure 4 , it is shown how the elongated extension 32 of the wear resistant insert 30 is further arranged at an angle β to the normal N of the crushing surface 21 in a plane 45 perpendicular to the central longitudinal axis 25 - b . Figure 4 Also shown is a suggested direction of rotation R of the inner wear bushing 10-b fixedly attached to the moving element (not shown) of the cone crusher. The angle β is selected so that the elongated extension 32 of the wear insert 30 is arranged more or less aligned with the direction of the crushing forces acting on the crushing surface 21 encountering the circumferential flow of the material moving along the crushing surface 21. Thus, the crushing forces acting on the first end 33 of the wear insert 30 will more likely be absorbed in the direction of the elongated extension 32 of the wear insert 30, in which direction the wear insert 30 is well supported and embedded in the material of the body 20.

[0091] Therefore, if Figure 3 and Figure 4The embodiment of the inner wear liner 10-b shown has a wear insert 30 whose elongated extension 32 is arranged in a plane parallel to the central longitudinal axis 25-b and in a plane 45 perpendicular to the central longitudinal axis 25-b at angles α, β to the normal N of the crushing surface 21. With this arrangement, the wear insert 30 can encounter axial and circumferential flows of material moving along the crushing surface 21.

[0092] However, arranging the wear insert with an offset in only one plane thereof will also increase the wear life of the wear liner.

[0093] In addition, when the wear liner 10-b begins to become worn, the first end 33 of the wear insert 30 will wear more evenly with the crushing surface 21, as described with reference to the previous embodiment, and expose an elliptical wear profile. In addition to providing a smoother wear profile, the end surface of the wear insert 30 so exposed is larger than the end surface of the wear insert 30 when worn with its elongated extension 32 aligned with the normal N of the crushing surface 21, thereby providing a larger wear material surface in the crushing surface 21.

[0094] Figure 5 A partial cross-sectional side view of an outer wear bushing 10-a and an inner wear bushing 10-b according to one embodiment of the present disclosure is shown. Likewise, the wear bushings 10-a, 10-b each include a body 20 having a circumferential extension extending around a central longitudinal axis 25-a, 25-b and having an elongated extension 22 from a first axial end 23 to a second axial end 24. Each body 20 includes a crushing surface 21 for contacting the material to be crushed, the crushing surface 21 being inclined relative to the central longitudinal axis 25-a, 25-b. Furthermore, in this embodiment, the second axial end 24 has a larger diameter than the first axial end 23. Each body 20 also includes a wear-resistant insert 30 embedded in the body 20 to reinforce the crushing surface 21. The wear-resistant inserts 30 each have an elongated extension 32 from a first end 33 to a second end 34, and the elongated extension 32 of the wear-resistant insert 30 is arranged at an angle α to a normal N to the crushing surface 21. As shown in FIG. Figure 5 As shown, the elongated extension 32 of the wear insert 30 of the outer wear bushing 10-a is inclined in a plane parallel to the central longitudinal axis 25-a toward the first axial end 23 of the main body 20 of the outer wear bushing 10-a, compared to the normal N of the crushing surface 21. In this exemplary embodiment, the elongated extension 32 of the wear insert 30 of the outer wear bushing 10-a is inclined at an angle α toward the first axial end 23 of the main body 20, compared to the normal N of the crushing surface 21. In addition, as shown in FIG. Figure 5As shown, the elongated extension 32 of the wear insert 30 of the inner wear bushing 10-b is inclined in a plane parallel to the central longitudinal axis 25-b towards the second axial end 24 of the body 20 of the inner wear bushing 10-b, compared to the normal N to the crushing surface 21. In this exemplary embodiment, the elongated extension 32 of the wear insert 30 of the inner wear bushing 10-b is inclined at an angle α towards the second axial end 24 of the body 20. The angle α of the outer wear bushing 10-a and the inner wear bushing 10-b is selected so that the elongated extension 32 of the wear insert 30 is more or less arranged to be aligned with the direction of the crushing force acting on the crushing surface 21, which encounters the axial flow of the material along the crushing surface 21 in the direction from the first axial end 23 of the body 20 towards the second axial end 24. When the material to be crushed is squeezed between the two wear bushings 10-a, 10-b, the outer wear bushing 10-a generally encounters a force directed toward the first axial end 23 of the body 20 of the outer wear bushing 10-a, and the inner wear bushing 10-b encounters a force directed toward the second axial end 24 of the body 20 of the inner wear bushing 10-b. As a result, the crushing force acting on the first end 33 of the wear insert 30 will more likely be absorbed in the direction of the elongated extension 32 of the wear insert 30, in which direction the wear insert 30 is well supported and embedded in the material of the bodies 20 of the outer wear bushing 10-a and the inner wear bushing 10-b. Furthermore, the angle α of the outer wear bushing 10-a may therefore be the same as or different from the angle α of the inner wear bushing 10-b, depending on the direction of the crushing force acting on the crushing surface 21 of the respective wear bushing 10-a, 10-b.

[0095] In addition, if Figure 4 As shown, the elongate extension 32 of the wear insert 30 may also be disposed at an angle β to the normal N to the crushing surface 21 in a plane 45 perpendicular to the central longitudinal axis 25 - a in the outer and inner wear bushings 10 - a , 10 - b .

[0096] Furthermore, as the wear liner 10-a, 10-b begins to become worn, the first end 33 of the wear insert 30 will wear more evenly with the crushing surface 21, as described with reference to the previous embodiment, and expose an elliptical wear profile. In addition to providing a smoother wear profile, the end face of the wear insert 30 so exposed is larger than the end face of the wear insert 30 when worn with the elongated extension 32 aligned with the normal N of the crushing surface 21, thereby providing a larger wear material surface in the crushing surface 21 of the wear liner 10-a, 10-b.

[0097] Figure 6A partial cross-sectional side view of an outer wear bushing 10-a and an inner wear bushing 10-b according to another embodiment of the present disclosure is shown. Again, the wear bushings 10-a, 10-b each include a body 20 having a circumferential extension extending around a central longitudinal axis 25-a, 25-b and an elongated extension extending from a first axial end 23 to a second axial end 24. Each body 20 includes a crushing surface 21 for contacting the material to be crushed, the crushing surface 21 being inclined relative to the central longitudinal axis 25-a, 25-b. In this embodiment, the body 20 of the outer wear bushing 10-a is composed of a plurality of wear bushing elements 20-a forming the body 20 of the outer wear bushing 10-a. Furthermore, in this exemplary embodiment, the second axial end 24 of the body 20 of the outer wear bushing 10-a has a smaller diameter than the first axial end 23, while the second axial end 24 of the body 20 of the inner wear bushing 10-b has a larger diameter than the first axial end 23.

[0098] Each body 20 further comprises a wear-resistant insert 30 embedded in the body 20 to reinforce the crushing surface 21. The wear-resistant inserts 30 each have an elongated extension 32 from a first end 33 to a second end 34, and the elongated extension 32 of the wear-resistant insert 30 is arranged at an angle α to the normal N of the crushing surface 21. Figure 6 As shown, the elongated extension 32 of the wear insert 30 of the outer wear bushing 10-a is inclined in a plane parallel to the central longitudinal axis 25-a toward the first axial end 23 of the body 20 of the outer wear bushing 10-a, compared to the normal N to the crushing surface 21. In this exemplary embodiment, the elongated extension 32 of the wear insert 30 of the outer wear bushing 10-a is inclined at an angle α toward the first axial end 23 of the body 20, compared to the normal N to the crushing surface 21. In addition, as shown in FIG. Figure 6As shown, the elongated extension 32 of the wear insert 30 of the inner wear bushing 10-b is inclined in a plane parallel to the central longitudinal axis 25-b towards the second axial end 24 of the body 20 of the inner wear bushing 10-b, compared to the normal N to the crushing surface 21. In this exemplary embodiment, the elongated extension 32 of the wear insert 30 of the inner wear bushing 10-b is inclined at an angle α towards the second axial end 24 of the body 20. The angle α of the outer wear bushing 10-a and the inner wear bushing 10-b is selected so that the elongated extension 32 of the wear insert 30 is more or less arranged to be aligned with the direction of the crushing force acting on each crushing surface 21, which encounters the axial flow of the material along the crushing surface 21 in the direction from the first axial end 23 towards the second axial end 24 of the body 20. When the material to be crushed is squeezed between the two wear bushings 10-a, 10-b, the outer wear bushing 10-a will generally encounter a force directed toward the first axial end 23 of the body 20 of the outer wear bushing 10-a, while the inner wear bushing 10-b will generally encounter a force directed toward the second axial end 24 of the body 20 of the inner wear bushing 10-b. As a result, the crushing force acting on the first end 33 of the wear insert 30 will more likely be absorbed in the direction of the elongated extension 32 of the wear insert 30, in which direction the wear insert 30 is well supported and embedded in the material of the bodies 20 of the outer wear bushing 10-a and the inner wear bushing 10-b. Furthermore, the angle α of the outer wear bushing 10-a may therefore be the same as or different from the angle α of the inner wear bushing 10-b, depending on the direction of the crushing force acting on the crushing surface 21 of each wear bushing 10-a, 10-b. The angle α may also be different between wear inserts 30 in the same wear liner 10-a, 10-b or between wear inserts 30 of different wear liner elements 20-a, based on the direction of the crushing force acting on the crushing surface 21 of the body 20 of the wear liner 10-a, 10-b or the wear liner element 20-a forming the body 20. Considering that the direction of the crushing force is generally not continuous but different along the crushing surface 21 of the body 20 of the wear liner 10-a, 10-b, an advantage of the present disclosure is that it can be adapted accordingly by adjusting the angle α based on which the wear insert 30 is tilted.

[0099] In addition, if combined Figure 4 The public Figure 6 In the embodiment of the invention, the elongated extension 32 of the wear insert 30 may also be arranged in a plane 45 perpendicular to the central longitudinal axis 25-a in the outer wear liner 10-a and the inner wear liner 10-b at an angle β to the normal N of the crushing surface 21.

[0100] In addition, when the wear bushings 10-a, 10-b start to become worn, the first end 33 of the wear-resistant insert 30 will wear more evenly with the crushing surface 21, as described with reference to the previous embodiment, and expose an oval wear profile. In addition to providing a smoother wear profile, the end face of the wear-resistant insert 30 thus exposed is larger than the end face of the wear-resistant insert 30 when worn and the elongated extension 32 of the wear-resistant insert 30 is aligned with the normal N of the crushing surface 21, thereby providing a larger wear-resistant material surface in the crushing surface 21 of the wear bushings 10-a, 10-b.

[0101] Figures 7a-7f A partial side view of the crushing surface 21 of the inner wear bushing 10-b is shown, showing an example of different patterns formed by the first end 33 of the wear-resistant insert 30 disposed at or near the crushing surface 21. As Figures 7a-7f shown, the wear-resistant inserts 30 can be arranged in rows 31 aligned with the elongated extension 22 of the main body 20 and distributed around the circumferential extension of the main body 20. In Figure 7a and 7d the rows 31 are arranged at a repeat distance 35. In Figure 7a the wear-resistant inserts 30 are arranged such that the first ends 33 in different rows 31 are aligned with each other in a plane 45 perpendicular to the central longitudinal axis 25-b, while in Figure 7d the wear-resistant inserts 30 are arranged such that the first ends 33 of adjacent rows 31 are staggered, such that the first ends 33 of the wear-resistant inserts 30 in every other row 31 are aligned with each other in a plane 45 perpendicular to the central longitudinal axis 25-b. In Figure 7b 、 Figure 7c and Figure 7e the rows 31 are arranged to have a repeat distance 35, and the repeat distance 35 is regularly interrupted by a blank distance 36, and the blank distance 36 is greater than the repeat distance 35. In Figure 7b the blank distance 36 corresponds to every 4th row of the removed wear-resistant inserts 30. In Figure 7c the blank distance 36 corresponds to every 5th row of the removed wear-resistant inserts 30. Figure 7e Shows a staggered pattern similar to Figure 7d showing the blank distance 36 corresponding to the removal of every 4th row. Thus, the blank distance 36 can correspond to the distance of at least one removed row 31 of the wear-resistant inserts 30 (including its repeat distance 35), but the blank distance 36 can also correspond to more than one removed row 31, for example, each blank distance 36 corresponds to two adjacent removed rows 31, etc. In addition, other alternatives for repeating the blank distance 36 can be envisioned, such as at least every 10th row, at least every 8th row, at least every 6th row, at least every 3rd row, etc.

[0102] Figures 7a-7f The pattern shown in can also be applied to the outer wear liner 10-b.

[0103] The novel and inventive wear bushings 10-a, 10-b disclosed herein can be obtained by a method (see Figure 8a ), the method comprises providing a mould (A1) for casting a wear liner therein. The wear insert 30 may thereafter be arranged (B1) with its first end 33 at a surface of the mould corresponding to the crushed surface 21 of the wear liner 10-a, 10-b and with its elongated extension 32 arranged at an angle α, β to a normal to the mould surface, which will correspond to a normal N to the crushed surface 21 of the produced wear liner 10-a, 10-b. Then, molten matrix material may be cast into the mould (C1) so that the molten matrix material surrounds the wear insert 30, and then the molten matrix material is allowed to solidify (D1), thereby obtaining a wear liner 10 comprising the wear insert 30 bonded to the solidified matrix material. After the matrix material forming the body 20 of the wear liner 10 has solidified, the mould is removed from the produced wear liner 10 (E1).

[0104] The wear insert 30 may be arranged at the mold surface by fasteners such as nails and screws, which are fixed in the mold surface and removably fastened to the first end 33 of the wear insert 30, for example by welding, so that the fastener is separated from the wear insert 30 when or after casting the matrix material in the mold.

[0105] Alternatively, the wear liner 10 disclosed herein may be provided by a method (see Figure 8b ), the method comprising: providing a body (A2) of a wear bushing 10-a, 10-b; forming a hole (B2) in the crushed surface 21 of the wear bushing 10 for receiving a wear insert 30 therein; and fixedly inserting the wear insert 30 into the hole (C2). In this embodiment, the hole is formed with an elongated extension that forms an angle α, β with a normal N to the crushed surface 21 of the wear bushing 10-a, 10-b, so that when the wear insert 30 is inserted therein, the elongated extension 32 of the wear insert 30 forms an angle α, β with the normal N to the crushed surface 21 of the wear bushing 10-a, 10-b. The wear insert 30 may be fixed in the hole by an adhesive or other fastening means known in the art.

[0106] A person skilled in the art realizes that many modifications of the embodiments described herein are possible without departing from the scope of the present disclosure as defined in the attached claims. For example, within the concept of the present disclosure, it is also conceivable to provide wear-resistant inserts with elongated extensions arranged at an angle to the normal of the crushing surface only in a portion of the wear liner, such as in particular the portion of the wear liner exposed to wear, while providing wear-resistant inserts with elongated extensions arranged in line with the normal of the crushing surface in other portions of the wear liner. As another example, it is also possible to vary the arrangement of the elongated extensions of the wear-resistant inserts, such as in the case where the wear-resistant inserts are arranged in a pattern with rows (between rows), so that, for example, every other row of wear-resistant inserts are arranged with elongated extensions at an angle to the normal of the crushing surface, while the wear-resistant inserts of the other rows are arranged with the elongated extensions in line with the normal of the crushing surface.

Claims

1. A wear bushing (10-a, 10-b) for a cone crusher, characterized in that: include: A body (20) having a circumferential extension extending around a central longitudinal axis (25-a, 25-b) and having a first elongated extension (22) from a first axial end (23) to a second axial end (24), the body (20) comprising a crushing surface (21) for contacting material to be crushed, the crushing surface (21) being inclined relative to the central longitudinal axis (25-a, 25-b), and a wear-resistant insert (30) embedded in the body (20) to strengthen the crushing surface (21), wherein The wear-resistant insert (30) has a second elongated extension (32) from a first end (33) to a second end (34), the first end (33) being arranged at or near the crushing surface (21), and wherein The second elongate extension (32) of the wear resistant insert (30) is arranged at an angle (α, β) to the normal (N) of the crushing surface (21).

2. The wear bushing (10-a, 10-b) according to claim 1, characterized in that The angles (α, β) formed with the normal (N) of the crushing surface (21) are in the range of 5°-45°, 8°-45°, 10°-45°, 16°-45° or 16°-30°.

3. The wear bushing (10-a, 10-b) according to claim 1 or 2, characterized in that: The second elongated extension (32) of the wear-resistant insert (30) is arranged at an angle (α, β) to the normal (N) of the crushing surface (21) in a plane parallel to the central longitudinal axis (25-a, 25-b) and / or in a plane (45) perpendicular to the central longitudinal axis (25-a, 25-b).

4. The wear bushing (10-a, 10-b) according to claim 1 or 2, characterized in that: The wear resistant inserts (30) are embedded in the body (20) at the crushing surface (21) in the form of a pattern, wherein the pattern is formed by first ends (33) of the wear resistant inserts (30) arranged at or near the crushing surface (21), the first ends (33) being arranged in rows (31) aligned with the first elongated extension (22) of the body (20), and wherein the rows (31) are arranged at a repeating distance (35) around the circumferential extension of the body (20).

5. The wear bushing (10-a, 10-b) according to claim 1 or 2, characterized in that: The wear-resistant insert (30) is embedded in the body (20) at the crushing surface (21) in the form of a pattern, wherein the pattern is formed by a first end (33) of the wear-resistant insert (30), the first end (33) being arranged at or near the crushing surface (21), arranged in a plurality of rows (31) aligned with the first elongated extension (22) of the body (20), and distributed around the circumferential extension of the body (20), and wherein the rows (31) are arranged around the circumferential extension of the body (20) with a repeat distance (35), the repeat distance (35) being regularly interrupted by a blank distance (36) greater than the repeat distance (35).

6. The wear bushing (10-a, 10-b) according to claim 5, characterized in that The blank distance (36) is repeated at least every 10th line, at least every 8th line, at least every 6th line, at least every 4th line or at least every 3rd line.

7. The wear bushing (10-a, 10-b) according to claim 5, characterized in that The blank distance (36) corresponds to the distance of at least one removed row (31) of the wear-resistant insert (30), said distance including the repeat distance (35) of the row (31).

8. The wear sleeve (10-a) according to claim 1 or 2, characterized in that The wear bushing (10-a) is an outer wear bushing, wherein the crushing surface (21) is arranged at the radially inward surface of the wear bushing (10-a), and wherein, during crushing, the outer wear bushing is fixedly mounted in the cone crusher for interacting with a moving element of the cone crusher, the moving element being arranged to rotate in a rotational direction (R) around its own central axis.

9. The wear sleeve (10-a) according to claim 8, characterized in that The second elongate extension (32) of the wear resistant insert (30) is inclined towards the first axial end (23) of the body (20) in a plane parallel to the central longitudinal axis (25-a) compared to the normal (N) to the crushing surface (21).

10. The wear sleeve (10-a) according to claim 8, characterized in that The second elongated extension (32) of the wear resistant insert (30) is arranged at an angle (β) to the normal (N) to the crushing surface in a plane (45) perpendicular to the central longitudinal axis (25-a), and the first end (33) of the wear resistant insert (30) at or near the crushing surface (21) is arranged as a leading end with respect to the rotation direction (R) of the interacting moving elements of the cone crusher during crushing operation.

11. The wear sleeve (10-b) according to claim 1 or 2, characterized in that The wear bushing (10-b) is an inner wear bushing, wherein the crushing surface (21) is arranged at the radially outward surface of the wear bushing (10-b), and wherein, during the crushing operation, the inner wear bushing will rotate in the rotational direction (R) around its own central longitudinal axis (25-b).

12. The wear sleeve (10-b) according to claim 11, characterized in that The second elongate extension (32) of the wear resistant insert (30) is inclined towards the second axial end (24) of the body (20) in a plane parallel to the central longitudinal axis (25-b) compared to the normal (N) to the crushing surface (21).

13. The wear sleeve (10-b) according to claim 11, characterized in that The second elongated extension (32) of the wear resistant insert (30) is arranged at an angle (β) to the normal (N) of the crushing surface (21) in a plane (45) perpendicular to the central longitudinal axis (25-b), and the first end (33) of the wear resistant insert (30) at or near the crushing surface (21) is arranged as a leading end with respect to the rotation direction (R) of the inner wear liner during crushing operation.

14. A cone crusher, characterized in that: Comprising at least one wear liner (10-a, 10-b) according to any one of claims 1 to 13.

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