Wear part and method of manufacturing the same

Abstract

A wear part and a method of manufacturing the same, the method comprising the steps of forming a body (1), including forming at least one socket (2) in or on the body (1); providing at least one insert (3) of a wear resistant material configured to be received by the socket (2); providing a retainer (5) comprising a first retaining member (6); and retaining the wear resistant insert (3) in the socket by the retainer (5). The method is characterized in that, with the wear resistant insert (3) at least partly received by the socket (2), the first retaining member (6) is at least partly inserted into a gap between the wear resistant insert (3) and the body (1), and a force is applied to the first retaining member (6) and / or to the wear resistant insert (3), thereby creating a retaining force to retain the wear resistant insert (3) within the socket (2).

Description

Technical Field

[0001] This invention relates to a wear component comprising a body made of a basic material and at least one insert made of a wear-resistant material. The invention also relates to a method for manufacturing said wear component. Background Technology

[0002] Wear-resistant structures and components are used, for example, in equipment for reducing the size of materials (e.g., rocks, stones, ores, or other materials to be crushed) or for material recovery. In these processes, the material to be crushed is compressed between the wear-resistant components or structures, or collides with the surfaces of the wear-resistant structures or components, thereby crushing the material. Examples of equipment used in these processes are crushers (including gyratory crushers, cone crushers, and jaw crushers) used, for example in the mining industry, including a support surface or frame serving as a mounting base to which the wear-resistant structure or component is attached.

[0003] The crushing of materials leads to surface wear of wear-resistant parts or structures. The amount of wear depends on the contact surface pressure, velocity, material properties of the part or structure surface, and the physical properties of the material being crushed (such as compressive strength and tribological properties). Once the wear-resistant structure or part is completely worn, it needs to be replaced, causing the equipment using the wear-resistant structure or part to shut down.

[0004] In general, the industry goal is to increase the effective lifespan of such wear-resistant structures and components by selecting advantageous materials. The tribological properties of existing metallic wear-resistant materials are modified, for example, by alloying the metal and ultimately adding particles, or through material manufacturing processes and subsequent treatments (such as heat treatment), thereby forming a phase in its microstructure that exhibits superior resistance to wear phenomena compared to conventional methods.

[0005] The aforementioned phase typically exhibits relatively high material hardness but generally low toughness and fatigue resistance. Therefore, the wear-resistant structures and components used in the aforementioned equipment are not actually formed entirely from materials with the aforementioned microstructure.

[0006] In a technical solution known from WO 2007 / 085694 A1, multiple wear-resistant material parts are engaged with a wear component at predetermined locations. Here, the wear component is typically made of an iron-based material by casting. The casting includes an array of cavities into which inserts made of a wear-resistant material (e.g., an iron-based metal alloy with a relatively high carbon content) are inserted.

[0007] In current technical solutions, additional materials such as adhesives can be used to hold the insert within the cavity. In practice, the insert is placed within the cavity, and adhesive is provided around the insert. Summary of the Invention

[0008] One object of the present invention is to provide a wear component that can be manufactured in an efficient manner while providing reliable fixation between the various materials of the wear component.

[0009] To achieve this objective, the present invention provides, in a first aspect, a method for manufacturing wear parts.

[0010] In a broader sense, the method of protection requires placing the retainer together with the insert within a socket formed in or on the body. The retainer mechanically holds the wear-resistant insert in the socket, ideally without any adhesive.

[0011] The claimed method includes the steps of: providing a body including at least one recess formed within or on the body, and providing at least one insert made of a wear-resistant material configured to be received by the recess.

[0012] The body defines the overall structure of the wear component and can be shaped differently depending on the intended use of the wear component. The body can be a wear component reinforced by one or more wear-resistant inserts.

[0013] The body can be made of a metallic material. For example, the body can be made of an iron-based material (Fe > 50%) containing a relatively small amount (preferably less than 10%) of metal carbides. Other examples of this material are steel, more specifically manganese steel. The body can be formed by any suitable manufacturing method. In practical implementations, the body is formed by casting.

[0014] One or more recesses provide structural support for the wear-resistant insert. The recesses may be configured as cavities or cutouts recessed from the body surface, or as other shaped elements formed within or on the body to provide support for the wear-resistant insert. Each recess extends along a longitudinal axis and is typically defined by one or more sidewalls extending along said axis and a base plate. Each recess may open toward a surface of the body at a location opposite the base plate along the longitudinal axis. The surface toward which the recess opens may be the wear surface, i.e., the surface of the body most susceptible to wear and degradation.

[0015] One or more sidewalls and the base plate of the cavity can be integrally formed. In other words, the cavity can be open only to a single surface of the body (e.g., a worn surface). Furthermore, the cavity can only be accessed from one side of the body, and not from any of the other sides.

[0016] In an exemplary practical implementation, the wear component can be used in equipment for reducing material size. The wear component can therefore be implemented as a crusher component. The crusher component can be attached to a support surface or frame, which serves as the mounting base for a stone crusher (e.g., a gyratory crusher, cone crusher, or jaw crusher).

[0017] The body of the crusher component forms the crushing body. More specifically, the crushing body can be the mantle of a gyratory crusher or cone crusher, or the jaw plate or jaw die of a jaw crusher. The crushing body includes a crushing surface that contacts the material to be crushed during operation. The crushing surface corresponds to the wear surface as described above. One or more recesses are formed within or on the crushing body, the recesses receiving one or more wear-resistant inserts. The recesses can be cavities recessed from the crushing surface, the cavities opening toward the crushing surface, wherein the cavities are defined by one or more sidewalls and a bottom plate, wherein the bottom plate and one or more sidewalls of the cavity are integrally formed.

[0018] Wear-resistant inserts are structural components made of a material with a hardness higher than that of the substrate. In this way, the wear-resistant insert is more wear-resistant than the substrate, thus forming a reinforcing structure for the substrate. Therefore, the service life of wear-resistant components can be extended by reducing wear on the substrate.

[0019] The wear-resistant material of the insert can be a hardened material. The hardness of the hardened material can be greater than 50 HRC, greater than 52 HRC, or even greater than 54 HRC. The wear-resistant material can be a metallic material, such as a steel alloy. For example, the insert can be made of an iron-based metal alloy with a carbon content. The carbon content can be greater than 0.5% by weight, greater than 0.8% by weight, greater than 1% by weight, or even greater than 1.2% by weight.

[0020] The wear-resistant insert extends along a longitudinal axis between the first end and the second end. The shape of the wear-resistant insert is not particularly limited; for example, it can be cylindrical, rectangular, elliptical, elongated, or cubic. The outer peripheral surface of the insert surrounding the longitudinal axis can be, for example, circular, flat, or generally circular with one or more flat portions, but is not limited to these examples.

[0021] In practical embodiments, the recess and the wear-resistant insert have corresponding shapes such that the wear-resistant insert can be received by the recess. To facilitate this, the recess can be formed to have a size slightly larger than that of the wear-resistant insert in a direction perpendicular to the longitudinal axis. The dimensions of the recess and the insert in the direction along the longitudinal axis can be substantially the same.

[0022] In this way, the insert can be fully received in the recess, and once received, one end face of the insert along its longitudinal axis can abut against the base plate of the recess, or can be spaced apart from the base plate of the recess. A rigid or compressible spacer can be arranged between this end face of the insert and the base plate of the recess. The opposite end surface of the insert can be substantially flush with the body surface of the recess facing it (e.g., the wear surface of the body), or can be positioned slightly below or slightly above the wear surface.

[0023] The insert is received in a recess by being inserted along the insertion direction. The insertion direction can be substantially parallel to the longitudinal axis of the insert and the recess. In the partially or fully inserted state, a gap is formed between the insert and the body.

[0024] This method also includes the step of retaining the wear-resistant insert in the recess by means of a retainer.

[0025] The retainer is configured to engage the insert with the body when the insert is received by the recess. Once positioned in the gap between the insert and the body, the retainer provides a retaining force that prevents the insert from dislodging from the recess and falling off the body during use of the worn component.

[0026] The retainer may include only the first retaining member, or it may include several retaining members (e.g., the first retaining member and the second retaining member), which will be further described below.

[0027] The first retaining member may be formed of a metallic material (e.g., steel, carbon steel, or mild carbon steel). However, the first retaining member may also be formed of any other material whose hardness is lower than that of the wear-resistant insert and / or the body.

[0028] In the method according to the invention, the wear-resistant insert is at least partially inserted into the recess along the insertion direction, thereby forming a gap between the wear-resistant insert and the body. The insertion direction is parallel to the longitudinal axis of the insert and the recess. Advantageously, the insert is fully inserted into the recess such that the bottom plate of the recess contacts the surface of the insert. In a subsequent step, a first retaining member is at least partially inserted into the gap.

[0029] The method also includes the step of retaining the wear-resistant insert in the recess by a retainer. With the wear-resistant insert at least partially received in the recess, the first retainer is at least partially inserted in the gap between the wear-resistant insert and the body. When a force is applied to the first retainer and / or the wear-resistant insert, the retainer provides a retaining force, thereby retaining the wear-resistant insert in the recess.

[0030] According to the method of the invention, the wear-resistant insert is held within a recess and bonded to the body without the need for adhesives or resins. Using the method of the invention, wear parts can be manufactured in a time-saving manner while reducing costs (e.g., manufacturing costs and / or labor costs).

[0031] When force is applied, the wear-resistant insert remains in the recess, thus engaging with the body. More specifically, after force is applied, the insert is held in the recess by a holding force acting between the wear-resistant insert and the retainer and / or between the retainer and the body. That is, before force is applied, the wear-resistant insert may not be reliably held in the recess of the body.

[0032] The force applied to the first retaining member and / or the wear-resistant insert can be an external force. In this document, "external force" can refer to a force applied to the first retaining member and / or the wear-resistant insert from outside the wear component, such as a force applied by an operator or manufacturing equipment.

[0033] Although in the actual embodiment, the force is applied (directly) to the first retaining member, the force may also be applied (indirectly) to other retaining members of the retaining member via the first retaining member and / or via the wear-resistant insert.

[0034] As described above, the retainer provides a means of mechanically engaging or attaching the insert to the body. "Mechanical engagement" or "mechanical attachment" as used herein can include adhesive-free attachment or engagement, including friction fits, form fits, interference fits, press fits, or combinations thereof.

[0035] For example, after force is applied, the retainer provides sufficiently high friction between the insert and the body to prevent the insert from dislodging from the body during use of the worn component. Depending on the specific construction of the body, recess, insert, and retainer, the mechanical engagement may additionally or alternatively include form fit, interference fit, press fit, or a combination thereof.

[0036] The aforementioned mechanical engagement can be provided by a retaining force acting directly between the body and the insert, or by a retaining force acting via the retainer (i.e., between the insert and the retainer and between the retainer and the body).

[0037] The force can be applied to the first retaining member along the insertion direction in which the insert is received (i.e., inserted) into the recess or along a direction parallel to the insertion direction.

[0038] The force applied to the wear-resistant insert can be a torque that causes the wear-resistant insert to rotate about its longitudinal axis. To facilitate the application of torque to the insert, for example, a notch, recess, slit, or other shaped receiving portion for a tool can be formed on the surface of the insert.

[0039] Regarding the retention of the wear-resistant insert within the recess, the retaining force provided by the retainer restricts the relative translational movement between the wear-resistant insert and the body (i.e., relative movement along the longitudinal axis of the insert). Once the retaining force is established by the retainer, any translational movement of the insert relative to the body is substantially prevented during the use of the wear component under normally occurring loads acting upon it. Therefore, the wear-resistant insert can be reliably retained within the recess throughout the entire service life of the wear-resistant component or structure.

[0040] Although the retainer prevents relative translational movement, it may or may not prevent relative rotational movement between the insert and the body (i.e., relative movement about the longitudinal axis of the insert).

[0041] Applying force to the first retaining member and / or the wear-resistant insert can have the effect of further inserting the first retaining member into the gap between the wear-resistant insert and the body. That is, the first retaining member can be further driven into the gap (directly by applying external force to it) or (indirectly by applying external force to the wear-resistant insert). Thus, the first retaining member travels further toward the bottom plate of the recess.

[0042] As previously stated, the deeper the first retaining member is inserted or driven into the gap, the greater the retaining force that holds the insert within the recess. Therefore, force can be applied until the wear-resistant insert is securely held in the recess, and / or until the first retaining member cannot be inserted further (i.e., until the retaining force provided by the retaining member is large enough to hold the insert in the recess during use of the wear-resistant member).

[0043] Therefore, this arrangement allows for the provision of the desired holding force. Thus, for applications where the loads acting on the body and insert are higher than normal, an increased holding force can be provided, while for applications where the loads acting on the body and insert are lower than normal, or where the material properties of the insert, retainer, or body specify a particular limit for the maximum holding force, a reduced holding force can be provided.

[0044] The magnitude of the external force applied to the first retaining component and / or wear-resistant insert can be used as an indicator to determine the retaining force.

[0045] In some embodiments, the retainer deforms when a force is applied to the first retaining member and / or the wear-resistant insert. The amount of deformation of the retainer affects the retaining force. That is, the greater the applied external force, the greater the deformation of the retainer, and consequently the greater the retaining force provided by the retainer.

[0046] The deformation of the retainer can include plastic deformation and / or elastic deformation.

[0047] Deformation of the retainer can be indirectly caused by applying a force (i.e., by compression of the retainer between the insert and the body). In other words, a compressive force acting in a direction perpendicular to the longitudinal axis of the insert and the recess will deform the retainer. In other embodiments, the retainer can be deformed by applying a force, causing the retainer to expand or enlarge.

[0048] In one practical embodiment, the first retaining member is a deformable member. In this embodiment, the first retaining member may be deformable so that it expands or enlarges in at least one direction when a force is applied thereto. In other words, after a force is applied to the expandable member, at least one dimension of the expandable member in a predetermined direction is larger than its dimension before the force was applied. During expansion or enlargement in at least one direction, the dimension of the expandable member in another direction may decrease.

[0049] A deformable component is inserted into the gap between the wear-resistant insert and the body. When force is applied, the deformable component deforms and expands, for example, in the radial direction or in a direction perpendicular to its longitudinal axis, thereby filling or bridging the gap between the insert and the body in a direction perpendicular to the longitudinal axis of the insert. Once the deformable component expands, it comes into contact with the surfaces of both the insert and the body. Thus, the deformable component pushes the insert against another surface of the body, or against the surface of an additional retainer, thereby providing a retaining force to hold the insert in the recess.

[0050] The shape of the insert and / or recess can be adapted in various ways to improve the fit and retention of the insert in the recess. For example, ridges, grooves, or flat sections can be provided on the insert and / or recess.

[0051] Regarding the structural configuration of the deformable component, it may include a shaft and an expandable base. When a force is applied to the shaft, the shaft and the expandable base move relative to each other, causing the expandable base to expand or enlarge. To facilitate the expansion of the expandable base, it may include a first leg and a second leg, which are attached to each other at their tips to form a "V" shape. The shaft is arranged such that it moves relative to the two flanks of the "V"-shaped expandable base, causing the two flanks of the expandable base to deflect outward. The two flanks deflect outward in opposite directions (i.e., in directions forming an angle of approximately 180° with each other).

[0052] The expandable base can take any other shape suitable for expansion as the expandable base and the shaft move relative to each other. For example, the expandable base can also take a "C" shape or a "U" shape.

[0053] The shaft and the expandable base can be structurally connected to each other at a joint. The joint can constitute a predetermined fracture point. When a force is applied, the deformable component can break at this predetermined fracture point, thereby allowing the shaft and the expandable base to move relative to each other.

[0054] Therefore, it facilitates the handling of deformable parts before they are inserted into the gap between the insert and the body, as well as the process of inserting them into the gap.

[0055] In this practical embodiment, the insert may include a flattened portion on its circular or partially circular outer peripheral surface. The flattened portion is positioned on the insert such that the expandable base of the deformable component contacts the flattened portion once it expands.

[0056] Therefore, the surface contact between the expandable base and the outer peripheral surface of the insert can be increased, allowing a greater (holding) force to be transmitted through the surface contact.

[0057] The recess may include grooves formed on one or more of its sidewalls, such that the gap between the insert and the body is sufficiently sized to allow insertion of the deformable component. Thus, the deformable component can be inserted into the gap, at least partially defined by the grooves formed on one or more sidewalls of the recess. For example, the grooves extend linearly along the longitudinal axis of the recess.

[0058] In another practical embodiment, the retainer includes a first retaining component and a second retaining component.

[0059] The second retaining member is disposed in the gap between the wear-resistant insert and the body. Specifically, the second retaining member can be inserted into the recess before the wear-resistant insert is inserted and before the first retaining member is inserted. Therefore, the step of retaining the insert in the recess by the retaining member can include: inserting the second retaining member into the recess, inserting the wear-resistant insert at least partially into the recess, and inserting the first retaining member at least partially into the gap between the insert and the body, and applying a force to the first retaining member to provide a retaining force, thereby retaining the wear-resistant insert in the recess.

[0060] In this case, a force can be applied directly to the first retaining member, while the force acts indirectly on the second retaining member via the insert. When the force is applied, the second retaining member is engaged between the insert and the body, and may deform under the load. During the application of force to the first retaining member, the first retaining member may or may not deform due to the compressive force acting in a direction perpendicular to the longitudinal axis of the insert.

[0061] The wear-resistant insert can be clamped or held between the first retaining member and the second retaining member by press-fit. The first retaining member and the second retaining member are then clamped or held in the gap between the insert and the body by press-fit.

[0062] The first retaining member can be inserted into the gap between the insert and the body at a position opposite to the second retaining member along the diametrical direction.

[0063] The first retaining component may include one or more gaskets made of a first material, and the second retaining component may include one or more gaskets made of a second material.

[0064] The gasket of the second retaining member can be formed to fit within the gap between the insert and the body. The thickness of the gasket of the second retaining member (i.e., the dimension in the direction perpendicular to the longitudinal axis of the insert and the recess) can be constant or tapering. The gasket of the second retaining member can be disposed in the gap with the side having greater thickness facing the bottom plate of the recess. When the gasket of the second retaining member is disposed in the gap, the thickness of the gasket increases in the insertion direction of the insert (i.e., the thickness of the gasket increases in the direction from the opening towards the bottom plate of the recess).

[0065] The thickness of one or more gaskets of the first retaining member (i.e., the dimension in the direction perpendicular to the longitudinal axis of the insert and the recess) may be slightly larger than the corresponding dimension of the gap, such that a compressive force can be generated in the direction perpendicular to the longitudinal axis of the insert during the insertion of the first retaining member into the gap and when force is applied to it. The dimensions of the gaskets of the first retaining member may also be configured to fit individually within the gap between the insert and the body, but a set of gaskets may be formed, the total thickness of which is slightly larger than the corresponding dimension of the gap.

[0066] The thickness of the shim of the first retaining member can be constant or decreasing. A decreasing thickness helps to initially insert the shim of the first retaining member into the gap between the insert and the body through the tapered end of the shim, while the decreasing thickness allows compressive force to be generated in a direction perpendicular to the longitudinal axis of the insert when force is applied thereon.

[0067] The gasket of the first retaining member can be inserted into the gap first on the decreasing thickness side. When the gasket of the first retaining member is arranged in the gap, the thickness of the gasket decreases in the insertion direction of the insert (i.e., the thickness of the gasket decreases from the opening toward the bottom plate of the recess).

[0068] The gaskets of the first and second retaining components can be formed as sleeves that conform to the external geometry of the insert and / or the geometry of the gap between the insert and the body. The sleeves may partially surround the wear-resistant insert.

[0069] The first material can be a metal (e.g., steel, copper, or aluminum), a metal alloy (e.g., brass), or a polymer material (e.g., plastic). The second material can be the same as or different from the first material. For example, the second material can be a different metal, a different metal alloy, or a different polymer material. The first and second materials can also be formed from any other material whose hardness is lower than that of the wear-resistant insert and / or the body.

[0070] In a practical embodiment, the hardness of the first material can be greater than that of the second material. For example, the first material can be steel, and the second material can be copper.

[0071] In yet another practical embodiment, the first retaining member comprises one or more generally spherical components. The one or more spherical components may be formed of a metallic material (e.g., steel). However, the one or more spherical components may be formed of a different material, the hardness of which is lower than the hardness of the wear-resistant insert and / or the body.

[0072] In this embodiment, one or more grooves are formed on one or more sidewalls of the recess, these grooves being recessed to a certain depth from the surface of the sidewall. The grooves may be formed spirally, extending along the longitudinal axis of the recess from an edge defined between the recess and the body surface opening towards the base plate of the recess. When the insert is inserted into the recess, the spiral grooves at least partially surround the insert about its longitudinal axis.

[0073] The groove can also be formed differently, as long as it includes a portion extending in a direction different from that along the longitudinal axis, so that when the insert is in the inserted state, it at least partially surrounds the wear-resistant insert around the longitudinal axis of the wear-resistant insert.

[0074] Along a direction perpendicular to the longitudinal axis of the wear-resistant insert and the recess, the maximum distance between the groove and the outer peripheral surface of the wear-resistant insert decreases towards the bottom plate of the recess. For example, the depth of the groove decreases towards the bottom plate of the recess.

[0075] After the insert (at least partially) is inserted into the recess, one or more spherical members are inserted into the gap between the insert and the body. More specifically, as described above, the one or more spherical members are received by grooves formed on the sidewalls of the recess.

[0076] When force is applied to the wear-resistant insert, one or more spherical members travel along the groove toward the base plate of the recess and / or in the circumferential direction of the insert. Due to the reduced distance between the groove and the outer circumferential surface of the insert, one or more spherical members are clamped between the insert and the body, and may deform under the resulting compressive load. Thus, one or more spherical members provide a holding force to retain the insert in the recess.

[0077] In a second aspect, the present invention provides a wear component.

[0078] The wear component includes a body comprising at least one recess formed within or on the body, at least one insert made of a wear-resistant material configured to be received by the recess, and a retainer configured to hold the wear-resistant insert within the recess.

[0079] The retainer includes a first retaining member configured to be at least partially inserted into the gap between the wear-resistant insert and the body when the wear-resistant insert is at least partially received by the recess, wherein the retainer is configured to provide a retaining force when a force is applied to the first retaining member and / or the wear-resistant insert, thereby retaining the wear-resistant insert in the recess.

[0080] The wear parts according to the invention can be manufactured more efficiently in terms of time and cost. Furthermore, the wear parts do not include adhesives or resins used to hold the insert within the body or substrate. Therefore, the invention avoids the risk of needing to monitor the handling or use of adhesives or resins.

[0081] Where applicable, unless otherwise stated, the foregoing description of methods for manufacturing wear parts is adapted, with necessary modifications, to the wear parts described below. Furthermore, the following description applies to methods for manufacturing wear parts.

[0082] The retainer can be configured to provide a retaining force to limit relative translational movement between the wear insert and the body, thereby holding the wear insert in the recess. The retainer can also be configured to limit relative rotational movement between the insert and the body about the longitudinal axis of the insert. However, relative rotational movement is not necessarily limited by the retainer.

[0083] The retainer may be configured to mechanically engage the wear-resistant insert and the body with each other when a force is applied to the first retainer and / or the wear-resistant insert, wherein the mechanical engagement is a friction fit, a form fit, an interference fit, a press fit, or a combination thereof.

[0084] The first retaining member can be configured to be further inserted into the gap between the wear-resistant insert and the body by applying force to the first retaining member and / or the wear-resistant insert.

[0085] The recess can be configured to receive the wear-resistant insert by inserting it into the recess along the insertion direction, and the retainer can be configured to provide a retaining force when a force is applied to a first retaining member of the retainer along the insertion direction or in a direction parallel to the insertion direction.

[0086] The wear-resistant insert can be configured to receive torque that causes the wear-resistant insert to rotate about its longitudinal axis.

[0087] The retainer can be configured to deform when a force is applied to the first retaining member and / or the wear-resistant insert to provide a retaining force, thereby holding the wear-resistant insert in the recess.

[0088] The retainer can be configured to deform due to compression between the wear-resistant insert and the body.

[0089] In one practical embodiment, the first retaining member is a deformable member, such as an anchor pin, which is configured to expand when a force is applied thereto to provide a retaining force, thereby holding the wear-resistant insert in the recess.

[0090] In another practical embodiment, the retainer includes a first retaining member and a second retaining member, the second retaining member being configured to be disposed in the gap between the wear-resistant insert and the body. The second retaining member may be configured to deform when a force is applied to the first retaining member.

[0091] In yet another practical embodiment, the first retaining member includes one or more generally spherical members that can be configured to deform when a force is applied to the wear-resistant insert. Attached Figure Description

[0092] Referring to the accompanying drawings, the above and other objects, features, and advantages of the invention will be better understood from the following illustrative and non-limiting detailed description of embodiments thereof, wherein like reference numerals will be used for similar elements, wherein: Figure 1(a) is a schematic cross-sectional view of the wear component according to the present invention. Figure 1(b) is a side view of a crusher component of a gyratory crusher or cone crusher, as an embodiment of a wear component according to the present invention. Figure 2(a) schematically shows the retainer according to a first embodiment of the invention before a force is applied to it. Figure 2(b) schematically shows the retainer of Figure 2(a) in a deformed state after a force has been applied to it. Figure 2(c) is a top view schematically showing the arrangement of the two anchoring pins between the insert and the surrounding body. Figure 2(d) schematically illustrates a wear-resistant insert including a flat surface according to an embodiment of the present invention. Figure 3(a) schematically illustrates the first retaining member of the retainer according to a second embodiment of the present invention. Figure 3(b) schematically illustrates the second retaining member of the retainer according to a second embodiment of the present invention. Figure 3(c) is a cross-sectional schematic diagram of the wear-resistant insert and the gasket of the first structure within the cavity of the body. Figure 3(d) is a schematic cross-sectional view of the wear-resistant insert in the cavity of the body and the gasket of the second structure. Figure 3(e) is a schematic cross-sectional view of the wear-resistant insert and the gasket of the third structure within the cavity of the body. Figure 3(f) is a top view schematically showing the arrangement of the three gaskets between the insert and the surrounding body. Figure 4(a) is a cross-sectional view of a cavity formed in the body according to a third embodiment of the present invention, wherein the sidewall of the cavity has a spirally formed groove, and Figure 4(b) illustrates the working principle of holding the wear-resistant insert in the cavity of Figure 4(a) by a retainer comprising one or more spherical components according to a third embodiment of the invention.

[0093] Explanation of reference numerals in the attached figures

[0094] 1: Main body, broken main body

[0095] 2: Hole

[0096] 21: Side wall

[0097] 22: Base plate

[0098] 23: Groove

[0099] d: Depth of the groove

[0100] L2: Longitudinal axis of the pore

[0101] 3: Wear-resistant inserts

[0102] 31: First end

[0103] 32: Second end

[0104] 33: Leveling section

[0105] 5: Retaining components

[0106] 51: Shaft

[0107] 52: Expandable part

[0108] 53: Expandable segment

[0109] 531: The First Leg

[0110] 532: The Second Leg

[0111] 54: Expandable segment

[0112] 55a: Joint point

[0113] 55b: Joint point

[0114] 6: Anchor pins

[0115] 61: Main gasket

[0116] 7: Second retaining component

[0117] 71: Secondary gasket

[0118] L3: Longitudinal axis of the wear-resistant insert

[0119] 10: Wear parts, crusher components

[0120] 11: Surface, broken surface, worn surface Detailed Implementation

[0121] Wear part

[0122] Figure 1(a) is a schematic cross-sectional view of the wear component 10 according to the present invention.

[0123] The wear component 10 includes a body 1 formed of a base material. The wear component 10 has a wear surface 11. A plurality of recesses 2 are formed in the body 1, extending from the wear surface 11 into the material of the body 1. Each recess 2 is defined by one or more sidewalls 21 and a base plate 22, and extends along a longitudinal axis L2.

[0124] In the exemplary embodiment of FIG1(a), the recess 2 is configured as a cavity recessed from the wear surface 11 of the body 1, wherein the cavity is open at one end and closed at the other end when viewed from the longitudinal axis L2.

[0125] The recesses 2 in the body 1 are configured to receive inserts 3 of wear-resistant material. The wear-resistant inserts 3 are formed of a material with a hardness higher than that of the base material forming the body 1. In this way, the wear-resistant inserts exhibit higher wear resistance than the body 1. Each wear-resistant insert 3 extends along the longitudinal axis L3 between the first or upper surface 31 and the second or lower surface 32 of the insert 3.

[0126] In a practical embodiment, the shape of the wear-resistant insert 3 corresponds to the shape of the recess 2 that receives the insert 3. The shape of the wear-resistant insert 3 is not particularly limited. In one practical embodiment, a cylindrical insert 3 will be used. For example, the insert may also have a rectangular, cubic, elongated, or elliptical shape, but is not limited thereto. The dimensions of the recess 2 and the insert 3 are respectively configured such that the insert 3 can be received within the recess 2.

[0127] The height of the insert 3 between its upper surface 31 and lower surface 32 can be the same as the longitudinal extension of the recess 2 from the base plate 22 to the wear surface 11. However, ideally, the height of the insert 3 along axis L3 is slightly less than the height of the recess 2 along axis L2, such that when the insert 3 is fully received in the recess 2, the upper surface 31 of the insert 3 will eventually be lower than the wear surface 11. In other embodiments, the height of the insert 3 along axis L3 can be slightly greater than the height of the recess 2 along axis L2, such that when fully received, the upper surface 31 is slightly higher than the wear surface 11.

[0128] To engage the wear-resistant insert 3 with the body 1, each insert 3 is inserted into a corresponding recess 2 from one side of the wear surface 11 of the body 1. The insert 3 is inserted into the recess 2 along the insertion direction (as indicated by the arrow in Figure 1(a)). The insertion direction is substantially parallel to the longitudinal axes L2 and L3 of the recess 2 and the insert 3, respectively.

[0129] To facilitate the insertion of the insert 3 into the recess 2, the dimension of each recess 2 in the direction perpendicular to the longitudinal axis L2 can be slightly larger than the dimension of the insert 3 perpendicular to the longitudinal axis L3. For example, if the recess 2 and the insert 3 have a cylindrical shape, the outer diameter of the insert 3 is smaller than the inner diameter of the corresponding recess 2. Therefore, when the insert 3 is fully or at least partially inserted, a gap is formed between the outer peripheral surface of the insert 3 and the inner peripheral surface of the recess 2 in the body 1.

[0130] Once the insert 3 is fully inserted into the recess 2 of the body 1 (as shown in the right-hand recess 2 in FIG. 1(a)), the lower surface 32 of the insert 3 rests on and contacts the base plate 22 of the recess 2. In the fully inserted state, the upper surface 31 of the insert 3 can be substantially flush with the wear surface 11 of the body, but ideally lower than the wear surface 11 of the body, as described above. In other embodiments, in the fully inserted state, the upper surface 31 of the insert 3 may also be slightly higher than the wear surface 11.

[0131] With the insert 3 fully inserted into the recess 2 of the body 1, the lower surface 32 does not necessarily abut against the base plate 22 of the recess 2, but can be positioned at a certain distance from it. A rigid or compressible spacer can be provided and arranged between the base plate 22 of the recess 2 and the lower surface 32 of the insert 3.

[0132] Once inserted into the recess 2, the insert 3 provides reinforcement to the body 1, which helps reduce wear on the body 1 and / or extend the service life of the wear parts 10.

[0133] Figure 1(b) shows the housing 10 of a gyratory or cone crusher as one possible embodiment of a wear component according to the invention. Other possible embodiments of the wear component according to the invention include the jaw plate or jaw die of a jaw crusher, which are not specifically shown.

[0134] In practical applications, the shroud 10 is cast from steel (e.g., manganese steel). During operation, the wear surface 11 of the shroud 10 comes into contact with the material to be crushed during the operation of the crusher: the shroud 10 is installed within the crusher in a manner known per se, such that a crushing gap is formed between the shroud 10 and the opposing fixed or moving elements of the crusher. Rocks, stones, or other materials are introduced into the crushing gap and are compressed between the wear surface 11 of the shroud 10 and the opposing surface within the crusher, thereby crushing the material to be crushed.

[0135] During this crushing operation, considerable force is applied to the cover 10, resulting in significant wear on the cover 10 and other wear components. To reinforce the cover 10 and reduce wear and / or extend its service life, a wear-resistant insert 3 is embedded in the wear surface 11 of the cover 10. As shown with reference to FIG1(a), the insert 3 is received in a recess 2 formed in the cover 10. The insert 3 is held in the recess 2 of the cover 10, and its upper surface 31 is substantially flush with, below, or above the wear surface 11 of the cover 10.

[0136] In the embodiment of Figure 1(b), the recesses 2 of the wear-resistant insert 3 are arranged in multiple rows around the circumference of the cover 10 in the most wear-prone area of ​​the wear surface 11. Adjacent rows of recesses 2 are offset relative to each other. However, many other patterns of recesses 2 and corresponding inserts 3 are also possible.

[0137] This invention provides a novel method for engaging a wear-resistant insert 3 to the body 1 of a wear component schematically shown in FIG. 1(a) (e.g., the cover 10, jaw plate, jaw mold, or any other wear component shown in FIG. 1(b)): each insert 3 is held within a corresponding recess 2 by one or more retainers disposed in a gap between the outer peripheral surface of the insert 3 and the surrounding inner peripheral surface of the corresponding recess 2 in the body 1. The retainers provide a retaining force to hold the insert 3 within the recess 2 and prevent or substantially prevent any relative movement of the insert 3 within the recess 2. Thus, this invention provides a manner for mechanically engaging or attaching an insert 3 to a body 1. Exemplary embodiments of the retainers will be further described below. With the retainers, the wear-resistant insert 3 is reliably held within the recess 2 during use of the wear component 10, despite the application of considerable forces thereon.

[0138] First embodiment

[0139] Figures 2(a) and 2(b) illustrate a retainer 5 according to a first embodiment of the invention, which is configured to retain a wear-resistant insert 3 within a recess 2 of the body 1 as described above. According to this exemplary embodiment, the retainer 5 has the form of an anchoring pin or dowel 6.

[0140] In this embodiment, the anchor pin 6 is elongated along the longitudinal axis L5 between a first or upper end 61 and a second or lower end 62. The anchor pin 6 may have a generally square or rectangular cross-section, in which case the outer peripheral surface of the anchor pin 6 is defined by a pair of opposing sidewalls 63. The anchor pin 6 includes a shaft portion 51 and an expandable portion 52 arranged adjacent to each other along the longitudinal axis L5. The shaft portion 51 includes the upper end 61 of the pin 6, and the expandable portion 52 includes the lower end 62 of the pin 6. The expandable portion 52 is configured to expand in a direction perpendicular to the longitudinal axis L5 when a force F is applied to the pin 6 along the longitudinal axis L5. More specifically, while the lower end 62 of the pin 6 is supported, when the force F is applied to the upper end 61 of the pin 6, the shaft portion 51 and the expandable portion 52 move relative to each other, resulting in deformation and expansion of the expandable portion 52.

[0141] As shown in Figure 2(a), the expandable portion 52 of the anchor pin 6 has a slit pattern, the slits extending at an angle from the two opposite sidewalls 63a, 63b of the anchor pin 6. One possible slit pattern is described below with reference to an actual embodiment, but the invention is not limited thereto.

[0142] In this embodiment, two pairs of corresponding slits are arranged in a "Y" shape. Each "Y" shape includes a first slit 64a extending at an angle from the first sidewall 63a of the pin 6 toward the lower end 62 of the pin 6, and a second slit 64b extending from the opposite second sidewall 63b of the pin 6. The first outer segment of the second slit 64b also extends at an angle toward the lower end 62 of the pin 6. In this embodiment, the angle formed by the outer segment 64b and the longitudinal axis of the pin 6 is the same in magnitude as the angle formed by the first slit 64a and the longitudinal axis of the pin 6, but is angled in the opposite direction from the longitudinal axis L5. The second inner segment of the second slit 64b extends along the longitudinal axis L5 of the pin 6 toward the lower end 62 of the pin 6. The first slit 64a and the second slit 64b in this pair of slits do not completely penetrate the pin 6, but leave a joint point 55a between them.

[0143] In this embodiment, two identical "Y" shaped slits are formed in pin 6. In other embodiments, only one "Y" shaped pattern or more than two "Y" shaped patterns may be provided.

[0144] The “Y”-shaped slit creates two expandable segments 53 and 54 of the pin 6, which are staggered near the lower end 62 of the pin along the longitudinal axis L5. Each expandable segment 53 and 54 is substantially “V”-shaped and includes a first leg 531 and a second leg 532. The first V-shaped expandable segment 53 is arranged relative to the shaft 51 such that when the force F is applied to the pin 6, the shaft 51 is pushed between the legs 531 and 532. The second V-shaped expandable segment 54 is arranged relative to the first expandable segment 53 such that when the force F is applied, the apex of the first expandable segment 53 is pushed between the legs of the second expandable segment 54. This causes the legs 531 and 532 of the first expandable segment 53 to open outward in a direction opposite to the longitudinal axis L5. Specifically, the legs 531 and 532 open outward in opposite directions, generating attachment forces in opposite directions (separated by 180°). This feature generates a high clamping force, sufficient to hold the insert in place during operation.

[0145] Similarly, when force F is applied to the shaft end of pin 6, the tip of the first expandable segment 53 moves relative to the two wings of the second expandable segment 54, producing a deformation similar to that described with respect to the first expandable segment.

[0146] In a practical embodiment, pin 6 is designed such that when a force F is applied, expandable segment 54 expands first, followed by expandable segment 53. More generally, one or more expandable segments are configured to expand from the lower end 62 toward the upper end 61 of pin 6 according to their arrangement, such that the expandable segment positioned closest to the lower end 62 expands first, and the expandable segment positioned closest to the upper end 61 expands last.

[0147] In this way, the expandable portion 52 of pin 6 expands in a direction away from the longitudinal axis L5 (particularly in a direction perpendicular to the longitudinal axis L5). Figure 2(b) shows pin 6 with the expandable portion 52 in an expanded state after a force F is applied to the upper end 61 of pin 6. The dimension of pin 6 in the direction perpendicular to the longitudinal axis L5 is greater than the dimension of pin 6 in that direction before deformation.

[0148] The retainer 5 according to the first embodiment of the present invention operates as follows: After the insert 3 has been inserted into the corresponding recess 2 formed in the body 1, the anchoring pin 6 is inserted between the outer peripheral surface of the insert 3 and the inner peripheral surface of the recess 2, with the longitudinal axis L5 of the anchoring pin 6 extending substantially parallel to the longitudinal axes L2 and L3 of the recess 2 and the insert 3. Then, a force F is applied to the anchoring pin 6 in the direction along the longitudinal axis L5. This causes a section of the anchoring pin 6 to expand within the gap until this expanded section of the anchoring pin 6 provides a tight interference fit between the outer peripheral surface of the insert 3 and the inner peripheral surface of the recess 2. In this way, a retaining force sufficient to hold the insert 3 within the recess 2 is provided during the operation of the crusher.

[0149] The expandable portion 52 of pin 6 does not necessarily have to include “V”-shaped expandable segments 53, 54. Any other shape, such as a “U” or “C” shape, can be considered that causes one or more expandable segments to expand once the shaft portion 51 moves relative to the expandable portion 52.

[0150] As a result of the slit in the "Y"-shaped pattern, as shown in Figures 2(a) and 2(b), the expandable segments 53 and 54 of the shaft 51 and pin 6 are structurally attached to each other at engagement points 55a and 55b. In this way, pin 6 is formed as a single-piece component. Therefore, relative movement between the segments is prevented before the application of force F. This enhances the handling of pin 6 before and during insertion into the gap between insert 3 and body 1.

[0151] Specifically, in the illustrated embodiment, the shaft portion 51 of the pin 6 adjacent to the expandable portion 52 tapers to a tip, and the first engagement point 55a is located between the tip of the shaft portion 51 and the valley of the first expandable segment 53. When a force F is applied, the relative movement of the shaft portion 51 with respect to the first expandable segment 53 causes the tip of the shaft portion 51 to be further pushed into the valley at the engagement point 55a.

[0152] In almost the same manner, the second joint 55b is located between the tip of the first expandable segment 53 and the adjacent valley of the second expandable segment 54. When a force F is applied, the relative movement of the first expandable segment 53 with respect to the second expandable segment 54 causes the tip of the first expandable segment 53 to be further pushed into the valley at the joint 55b.

[0153] Figure 2(b) shows the pin 6 in a deformed and expanded state, and illustrates that the pin 6 actually breaks at engagement points 55a and 55b, allowing relative movement of the shaft portion 51 relative to the first expandable segment 53, and relative movement of the first expandable segment 53 and the second expandable segment 54. This, in turn, causes the side wings 531, 532 of the first expandable segment 53 and the side wings of the second expandable segment 54 to open in a direction away from the longitudinal axis L5. Therefore, engagement points 55a and 55b in this embodiment constitute predetermined breakage points.

[0154] In this embodiment, the anchoring pin 6 is made of low-carbon steel and is designed to secure the circular insert 3 to the body (specifically, the casting 1). More generally, the pin 6 can be formed of any material with a lower hardness than the material of the body 1 and / or the insert 3. For example, the pin 6 can be formed of another metallic material (e.g., aluminum or copper), a metal alloy, or even a polymeric material (e.g., plastic). The anchoring pin is designed to quickly and easily secure the insert 3 in its position, replacing the use of adhesives or other bonding materials.

[0155] As described below, the anchoring pin 6 is used to engage the insert 3 with the body or casting 1.

[0156] Figure 2(c) shows that, in this case, the recess 2 is formed to accommodate the cylindrical insert 3, wherein the sidewalls of the recess 2 are additionally recessed at two locations to provide space for two anchoring pins 6 of the type described above. The number of recesses may be different from two, corresponding to the number of anchoring pins 6 provided to hold the insert 3 within the recess 2.

[0157] After the anchoring pin 6 is inserted between the insert 3 and the body 1, and after a force F is applied to the pin 6, the V-shaped expandable sections 53 and 54 of the expandable portion 52 of the pin 6 expand and contact the outer peripheral surface of the wear-resistant insert 3 and the inner peripheral surface of the recess 2 formed in the body 1. More specifically, the first leg 531 of the first expandable section 53 and the first leg of the second expandable section 54 can contact the outer peripheral surface of the insert 3, while the second leg 532 of the first expandable section 53 and the second leg of the second expandable section 54 can contact the inner peripheral surface of the recess 2, and vice versa. In this way, the insert 3 is pushed against the surface of the body 1 or against the surface of another retainer. The resulting friction prevents relative translational movement (i.e., relative movement along the longitudinal axes L2 and L3) between the insert 3 and the body 1 during and throughout the use of the wear component 10.

[0158] Therefore, retainer 5 mechanically engages insert 3 with body 1 (i.e., by mechanical engagement, particularly by friction fit or at least including friction fit). Depending on the specific construction of body 1, recess 2, insert 3 and retainer 5, mechanical engagement may additionally or alternatively include form fit, interference fit, press fit or a combination thereof.

[0159] Therefore, the retainer 5 reliably holds the insert 3 within the recess 2 without the need for adhesives or resin. The anchoring pin 6 can be installed in a time-saving manner and is made of relatively inexpensive materials.

[0160] Although one retainer 5, including the aforementioned anchor pin 6, is sufficient to hold the insert 3 in the recess 2 throughout the entire use of the wear component, more than one anchor pin 6 may be provided to hold the wear-resistant insert 3 in the recess 2.

[0161] Figure 2(d) shows a wear-resistant insert 3, which includes an outer peripheral surface that is at least partially circular around a longitudinal axis L3. The insert 3 includes a flattened portion 33 on its at least partially circular outer peripheral surface. The flattened portion 33 is provided and arranged to contact the expandable portion 52 of the pin 6, and in particular to contact one or more flanks of one or more expandable segments.

[0162] The flattened portion 33 advantageously allows for increased retaining force by increasing the surface contact between the expandable portion 52 of the pin 6 and the outer peripheral surface of the insert 3. Therefore, greater force can be transmitted through this surface contact.

[0163] The attachment provided by Anchor Pin 6 is recyclable, sustainable, and secure. Anchor Pin 6 improves the manufacturing process by reducing the handling of heavy components, attaching inserts more quickly, and providing opportunities to reduce total cost.

[0164] Second embodiment

[0165] Reference Figures 3(a) to 3(f) A second embodiment for securing the insert 3 within the recess 2 of the body or casting 1 will be described.

[0166] In a broader sense, this embodiment relies on two types of gaskets that are placed between the outer peripheral surface of the insert 3 and the surrounding inner peripheral surface of the corresponding recess 2.

[0167] Figure 3(a) schematically illustrates a first exemplary gasket 61. The gasket 61 is formed from a sheet having a first edge or upper edge, a second edge or lower edge, and two opposing side edges. In this embodiment, the upper and lower edges are shorter than the opposing side edges. The gasket 61 has curvature, so the upper and lower edges are curved. The curvature of the gasket 61 is adapted to the size and shape of the wear-resistant insert 3.

[0168] In this embodiment, the upper and lower edges of the gasket have the same dimensions. In other embodiments, the sheet forming the gasket 61 may be cut into a specific predetermined shape, such that the upper and lower edges of the gasket 61 have different dimensions. In some embodiments, the upper edge of the gasket 61 is wider than the lower edge. For example, the gasket 61 may be cut into a "T" shape, such that the upper edge of the gasket is wider than the lower edge.

[0169] The gasket 61 is formed of a material with a lower hardness than the material of the wear-resistant insert 3 and / or the body 1. The gasket 61 may be formed of a metallic material (e.g., steel, copper, or aluminum), a metallic alloy material (e.g., brass), or a polymer material (e.g., plastic).

[0170] Figure 3(b) shows a second exemplary gasket 71, which can (but is not required to) be used to supplement gasket 61.

[0171] In the following text, for the sake of simplicity, the first type of gasket 61 will be referred to as "main gasket 61" and the second type of gasket 71 will be referred to as "secondary gasket 71".

[0172] Each sub-shield 71 is formed of a sheet having a first edge or upper edge, a second edge or lower edge, and two opposing side edges. In this embodiment, the upper and lower edges of the sub-shield 71 are longer than the opposing side edges. The sub-shield 71 has curvature, so the upper and lower edges are curved. The curvature of the sub-shield 71 is adapted to the size and shape of the wear-resistant insert 3.

[0173] Similar to the main gasket 61, the upper and lower edges of the secondary gasket 71 have the same dimensions. In other embodiments, the secondary gasket 71 may be cut into a specific predetermined shape such that the upper and lower edges of the secondary gasket 71 have different dimensions. In some embodiments, the lower edge of the secondary gasket 71 is wider than the upper edge. For example, the secondary gasket 71 may be cut into a "T" shape such that the lower edge of the secondary gasket 71 is wider than the upper edge.

[0174] In this embodiment, the main gasket 61 and the secondary gasket 71 have approximately the same width, but the main gasket 61 is longer than the secondary gasket 71 (i.e., the side edges of the main gasket are longer). In other embodiments, for example, if the longitudinal extension of the insert 3 is relatively short, the main gasket 61 and the secondary gasket 71 may also have approximately the same length.

[0175] The secondary gasket 71 is formed of a material that is the same as or different from that of the primary gasket 61. In a practical embodiment, ideally, the secondary gasket 71 is formed of a material that is less hard than that of the primary gasket 61. For example, the primary gasket 61 may be made of steel, and the secondary gasket 71 may be made of copper, wherein the copper material of the secondary gasket 71 is softer than the steel material of the primary gasket 61.

[0176] Gaskets 61 and 71 have different thicknesses between their upper and lower edges. In the embodiments shown in Figures 3(a) and 3(b), the main gasket 61 is thicker at its upper edge than at its lower edge, and the secondary gasket 71 is thicker at its lower edge than at its upper edge.

[0177] Both gaskets 61 and 71 include a first portion with a constant thickness and a second portion with a decreasing thickness. The constant-thickness portion of the main gasket 61 is positioned toward a first edge or upper edge, while the constant-thickness portion of the secondary gasket 71 is positioned toward a second edge or lower edge. In the decreasing-thickness portion, the thickness of the main gasket 61 decreases in the direction from the first edge or upper edge toward the second edge or lower edge. The thickness of the secondary gasket 71 decreases in the direction from the second edge or lower edge toward the first edge or upper edge.

[0178] In order to hold the insert 3 within the recess 2 using this gasket, the following steps are performed.

[0179] As a preparatory step, clean the cavity 2, main gasket 61, and secondary gasket 71 (if any) with a degreasing agent (such as acetone).

[0180] As further explained above, the use of the secondary gasket 71 is optional. The following steps are performed when the secondary gasket 71 is used.

[0181] A secondary gasket 71 is placed within the recess 2 such that the lower edge of the gasket 71 is located at or near the bottom plate of the recess 2. The gasket 71 is sized such that it extends around a portion of the inner circumferential surface of the recess 2: the gasket 71 extends around a portion of the circumference of the recess 2, which corresponds to approximately 90° of the circumference for the gasket 71 shown in FIG. 3(b), and extends around a portion of the depth of the recess 2, which, for the gasket 71 shown in FIG. 3(b), occupies less than half the depth of the recess 2. In other embodiments, the gasket 71 may be sized to extend around a portion of the circumference corresponding to less than or equal to 180° of the circumference of the recess 2 (e.g., approximately 30°, 60°, 90°, 120°, 150°, or 180°).

[0182] The secondary gasket 71 is placed in the cavity 2, with its thicker side facing the bottom plate 22 of the cavity 2, and its decreasing side facing the opening of the cavity 2 leading to the wear surface 11.

[0183] The radius of curvature of the gasket 71 can be greater than the radius of curvature of the recess 2, such that the gasket 71 does not contact the inner circumferential surface of the recess 2 across its entire width, but only contacts the inner circumferential surface of the recess 2 in the side edge region of the gasket 71. In other embodiments, the radius of curvature of the gasket 71 and the radius of curvature of the inner circumferential surface of the recess 2 can be substantially the same.

[0184] In an actual embodiment serving as a wear component of the housing 10 for a gyratory crusher or cone crusher, when the housing 10 is in an upright position, the recesses 2 extend substantially horizontally into the housing 10, the bottom plate 22 (i.e., the closed inner end) of the recesses 2 extends in a substantially vertical direction, and the lower portion of the inner circumferential surface of each recess 2 can be considered as the "bottom" of the recess 2. A gasket 71 is placed at the bottom of the recess 2.

[0185] In some cases, one secondary gasket 71 may be sufficient. In other cases, such as when the gap between insert 3 and body 1 is relatively large, two or more substantially identical secondary gaskets 71 may be placed within the recess 2. One or more additional secondary gaskets 71 may be placed on top of the initial secondary gasket 71 or at another location within the recess 2 along its inner surface, such that the lower edge of one or more additional gaskets 71 is also at or near the bottom plate of the recess 2.

[0186] However, the use of secondary shims 71 is optional. In practical implementations, 0, 1, 2, 3, or more than 3 secondary shims 71 may be provided. In practical implementations, two secondary shims 71 may be used. The number of secondary shims 71 should be selected such that the wear-resistant insert 3 can still be pushed all the way to the bottom plate of the recess 2 in the next step.

[0187] A wear-resistant insert 3 is placed in a recess 2 and pushed against the base plate 22 of the recess 2, which may be equipped with one or more optional secondary pads 71. The insert 3 is pushed into the recess 2, optionally over the secondary pads 71, until the insert 3 (its lower surface 32) is firmly in contact with the base plate 22 of the recess 2, and the upper surface 31 of the insert 3 is not only flush with the wear surface 11 of the wear member 10, but even lower than the wear surface 11. In other embodiments, the lower surface 32 does not contact the base plate 22 of the recess 2 when the insert 3 is fully received by the recess 2. Furthermore, in other embodiments, the upper surface 31 of the insert 3 may be positioned slightly above the wear surface 11 when the insert 3 is fully received by the recess 2.

[0188] To provide the necessary fixation of the insert 3 within the recess 2, one or more of the aforementioned main gaskets 61, as shown in Figure 3(a), are used. Figures 3(c) and 3(d) are cross-sectional views showing the insert 3 already placed in the recess 2 of the body 1, with optional secondary gaskets 71 disposed in the gap between the insert 3 and the recess 2. The main gasket 61 has been partially pushed into the gap between the insert 3 and the recess 2.

[0189] The main gasket 61 is first inserted into the gap with its decreasing thickness side. Thus, once the main gasket 61 has been partially pushed into the gap, the decreasing side is arranged toward the bottom plate of the recess 2, and the side with the greater thickness extends out of the recess 2 beyond the wear surface 11.

[0190] If one or more secondary gaskets 71 are used, the primary gasket 61 may be positioned relative to the diameter of the insert 3 and the recess 2 along the diametrical direction with respect to the secondary gasket 71 (Fig. 3(c)), or positioned in the same position as the secondary gasket 71 along the circumference of the insert 3 and / or along the inner surface of the recess 2 (Fig. 3(d)).

[0191] One or more additional main washers 61 (Figures 3(e) and 3(f)) can be added to form a stack with the initial main washer 61. This may be particularly ideal if the gap between the insert 3 and the recess 2 is relatively large. The number of main washers 61 is selected based on the size of the gap between the insert 3 and the recess 2. For example, as schematically shown in Figure 3(f), three main washers 61 are placed on top of the insert 3 in a stacked insert manner (as seen when the wear part (e.g., the housing) is in an upright position). The number of main washers 61 should allow the washers to be hammered down for good mechanical clamping.

[0192] Multiple main gaskets 61 do not necessarily need to be stacked; they can also be distributed within the gap along the circumference of the insert 3 and / or along the inner surface of the recess 2. For example, the gaskets 61 can be positioned opposite each other in the diametrical direction (e.g., above and below the insert if the wear component (e.g., a cover) is placed upright) to prevent the insert 3 from tilting excessively within the recess 2. Individual gaskets 61 and / or individual stacks of gaskets 61 can be distributed within the gap along the circumference of the insert 3 and / or along the inner surface of the recess 2, for example, positioned opposite each other in the diametrical direction. In this way, the insert 3 can be securely held even if its size is significantly smaller than the recess 2.

[0193] In this state, approximately one-third of the length of the main gasket 61 should extend from the recess 2 to ensure tight contact between the insert and the cavity.

[0194] Then, the main washer 61 is hammered into the space between the insert 3 and the recess 2 using a hammer (in... Figures 3(c) to 3(e) (As indicated by the arrow), until it is substantially flush with the worn surface of the cover. To achieve a tight fit, all the main gaskets 61 in the stack should be hammered into the gap simultaneously, rather than one at a time. Any remaining protruding portion of the main gaskets 61 may be cut off or ground away.

[0195] Once the main gasket 61 has been hammered in and any protruding portions have been removed, a coating or paint layer can be applied. Any remaining gaps between the insert and the recess do not need to be filled with adhesive.

[0196] Third embodiment

[0197] Referring to Figures 4(a) and 4(b), a third embodiment for fastening the insert 3 to the body or casting 1 will be described.

[0198] In a broader sense, this embodiment relies on a tapered recess in the circumferential sidewall 21 of the cavity 2 formed in the base casting 1, in which a spherical component (e.g., a ball) is received. Rotating or pressing the insert 3 into place causes the metal ball to engage between the insert 3 and the sidewall 21 of the cavity 2, locking the insert 3 into place when an interference fit is formed between the casting 1 and the insert 3.

[0199] The material of the sphere is softer than the materials of the base casting 1 and the insert 3, allowing the sphere to deform when placed in the recess between the insert 3 and the base casting 1 (although the sphere does not necessarily have to deform). These spheres can be formed from metallic materials (e.g., steel, copper, or aluminum), metallic alloy materials (e.g., brass), or polymeric materials (e.g., plastic).

[0200] Figure 4(a) is a cross-sectional view of the recess 2 formed in the body 1. In this embodiment, the tapered recess has the form of a spiral groove 23.

[0201] The tapered recess does not necessarily have to be formed in a spiral shape, but can have any other shape that allows the ball to be held between the insert 3 and the sidewall 21 of the recess 2 when the insert 3 is rotated or pressed into place. For example, the tapered recess can extend relatively straight from the opening toward the base plate 22 of the recess 2, having an angled portion at the end of the recess toward the base plate 22 of the recess 2. The recess also does not necessarily have to taper along its entire extension, but can taper, for example, only at its end toward the base plate 22 of the recess 2.

[0202] Figure 4(b) illustrates the working principle of holding the wear-resistant insert in the cavity of Figure 4(a) by a retainer comprising one or more spherical components according to a third embodiment of the present invention.

[0203] As can be clearly seen from the figure, the spiral groove 23 is wider at the open end of the cavity 2 and becomes shallower towards the bottom plate 22 of the cavity 2. Therefore, when the ball is placed in the spiral groove between the insert 3 and the side wall 21 and moves along the spiral groove towards the bottom plate 22 of the cavity 2, the ball is continuously further compressed as the width of the spiral groove 23 decreases until a tight fit is achieved. The ball can deform under compressive load between the insert 3 and the side wall 21 of the cavity 2.

[0204] When more than one ball is inserted into the groove, the balls can contact each other, or even stack and abut against each other to bridge the gap between the insert 3 and the groove 23. Therefore, once a ball moves along the groove 23, it may not only become stuck between the insert 3 and the sidewall 21 of the recess 2, but several balls may also press against each other. In this way, a tight fit can be achieved along the entire groove (even in the portion of the groove where the diameter of a single ball is less than the groove depth).

[0205] Therefore, this embodiment provides a friction fit along the helical groove. This technical solution is low-cost, can be applied quickly, and allows for a wide range of tolerances in the base casting.

[0206] In a broader sense, all the embodiments described above require the deformable retainer to be placed together with the insert within the recess. The retainer mechanically holds the wear-resistant insert within the recess of the base casting, ideally without any adhesive or similar bonding material. However, depending on the specific circumstances, a certain amount of adhesive or other suitable bonding material (e.g., epoxy resin) may be used to supplement the mechanical retention.

Claims

1. A method for manufacturing a wear component (10), characterized in that, The method includes the following steps: Provide a body (1) comprising at least one cavity (2) formed within or on the body (1). Provide at least one insert (3) made of a wear-resistant material, the insert being configured to be received by the recess (2), and The wear-resistant insert (3) is held in the cavity (2) by the retainer (5). Wherein, when the wear-resistant insert (3) is at least partially received by the recess (2), the first retaining member (6) of the retainer (5) is at least partially inserted into the gap between the wear-resistant insert (3) and the body (1), and A force (F) is applied to the first retaining member (6) and / or the wear-resistant insert (3) to generate a retaining force to hold the wear-resistant insert (3) within the cavity (2).

2. The method according to claim 1, wherein the retaining force provided by the retainer (5) restricts the relative translational movement between the wear-resistant insert (3) and the body (1) to retain the wear-resistant insert (3) within the recess (2).

3. The method according to claim 1 or 2, wherein when a force (F) is applied to the first retaining member (6) and / or the wear-resistant insert (3), the retaining member (5) mechanically engages the wear-resistant insert (3) and the body (1) with each other, the mechanical engagement being a friction fit, a form fit, an interference fit, a press fit, or a combination thereof.

4. The method according to any one of claims 1 to 3, wherein a force (F) is applied to the first retaining member (6) and / or the wear-resistant insert (3) such that the first retaining member (6) is further inserted into the gap between the wear-resistant insert (3) and the body (1).

5. The method according to any one of the preceding claims, The wear-resistant insert (3) is inserted into the recess (2) along the insertion direction, so that the recess (2) receives the wear-resistant insert (3), and The force (F) applied to the first retaining member (6) of the retaining member (5) is applied along the insertion direction or in a direction parallel to the insertion direction.

6. The method according to any one of the preceding claims, wherein the force (F) applied to the wear-resistant insert (3) is a torque that causes the wear-resistant insert (3) to rotate about its longitudinal axis (L3).

7. The method according to any one of the preceding claims, wherein when the force is applied to the first retaining member (6) and / or the wear-resistant insert (3), the retaining member (5) deforms to provide a retaining force, thereby retaining the wear-resistant insert (3) in the recess (2); optionally, wherein the retaining member (5) is deformed due to compression between the wear-resistant insert (3) and the body (1).

8. The method according to any one of the preceding claims, wherein the first retaining member (6) expands when the force is applied thereto, thereby providing a retaining force for retaining the wear-resistant insert (3) in the recess (2).

9. The method according to any one of the preceding claims, wherein The method further includes the step of providing a second retaining member (7) of the retaining member (5) in the gap between the wear-resistant insert (3) and the body (1). The first retaining component (6) includes one or more gaskets (61) of a first material, and the second retaining component (7) includes one or more gaskets (71) of a second material. Wherein the hardness of the first material is greater than or equal to the hardness of the second material, and When the force is applied to the first retaining member (6), the second retaining member (7) deforms.

10. The method according to any one of the preceding claims, The cavity (2) includes at least one sidewall (21) and a bottom plate (22). The cavity (2) is provided with a groove (23) recessed from the surface of the side wall (21). in, When the insert (3) is received by the recess (2), the maximum distance between the groove and the outer peripheral surface of the wear-resistant insert (3) decreases toward the base plate (22) of the recess (2) in a direction perpendicular to the longitudinal axis (L3) of the insert (3) and the longitudinal axis (L2) of the recess (2). The first retaining component (6) includes one or more generally spherical members.

11. A wear component (10), characterized in that, The wear component includes: The body (1) includes at least one cavity (2) formed within or on the body (1). At least one insert (3) made of a wear-resistant material, the insert being configured to be received by the recess (2), and Retainer (5), the retainer being configured to hold the wear-resistant insert (3) within the recess (2), The retaining member (5) includes a first retaining member (6), which is configured to be at least partially inserted into the gap between the wear-resistant insert (3) and the body (1) while the wear-resistant insert (3) is at least partially received by the recess (2). The retainer (5) is configured to provide a retaining force when a force is applied to the first retainer (6) and / or the wear-resistant insert (3) to retain the wear-resistant insert (3) in the recess (2).

12. The wear member (10) according to claim 11, wherein the retainer (5) is configured to provide the retaining force to limit the relative translational movement between the wear-resistant insert (3) and the body (1), thereby retaining the wear-resistant insert (3) in the recess (2).

13. The wear member (10) according to claim 11 or 12, wherein the retainer (5) is configured to mechanically engage the wear-resistant insert (3) and the body (1) with each other when the force is applied to the first retainer (6) and / or the wear-resistant insert (3), wherein the mechanical engagement is a friction fit, a form fit, an interference fit, a press fit or a combination thereof.

14. The wear member (10) according to any one of claims 11 to 13, wherein the first retaining member (6) is configured to be further inserted into the gap between the wear-resistant insert (3) and the body (1) by applying force to the first retaining member (6) and / or the wear-resistant insert (3).

15. The wear member (10) according to any one of claims 11 to 14, wherein the recess (2) is configured to receive the wear-resistant insert (3) by inserting the wear-resistant insert (3) into the recess (2) along the insertion direction, and wherein, The retainer (5) is configured to provide a retaining force when a force is applied to the first retaining member (6) of the retainer (5) in the direction of insertion or in a direction parallel to the direction of insertion.

16. The wear component (10) according to any one of claims 11 to 15, wherein the wear-resistant insert (3) is configured to receive a torque that causes the wear-resistant insert (3) to rotate about its longitudinal axis (L3).

17. The wear member (10) according to any one of claims 11 to 16, wherein the retainer (5) is configured to deform to provide a retaining force when the force is applied to the first retainer (6) and / or the wear-resistant insert (3), thereby retaining the wear-resistant insert (3) in the recess (2); optionally, wherein the retainer (5) is configured to deform due to compression between the wear-resistant insert (3) and the body (1).

18. The wear component (10) according to any one of claims 11 to 17, wherein, The first retaining member (6) is configured to expand when the force is applied thereto to provide a retaining force, thereby retaining the wear-resistant insert (3) in the cavity (2).

19. The wear component (10) according to any one of claims 11 to 18. The retainer (5) further includes a second retaining member (7) configured to be disposed in the gap between the wear-resistant insert (3) and the body (1). The first retaining component (6) includes one or more gaskets (61) of a first material, and the second retaining component (7) includes one or more gaskets (71) of a second material. Wherein the hardness of the first material is greater than or equal to the hardness of the second material, and The second retaining member (7) is configured to deform when the force is applied to the first retaining member (6).

20. The wear component (10) according to any one of claims 11 to 19. The cavity (2) includes at least one sidewall (21) and a bottom plate (22), and the cavity (2) is provided with a groove (23) recessed from the surface of the sidewall (21). When the insert (3) is received by the recess (2), the maximum distance between the groove and the outer peripheral surface of the wear-resistant insert (3) decreases toward the base plate (22) of the recess (2) in a direction perpendicular to the longitudinal axis (L3) of the insert (3) and the longitudinal axis (L2) of the recess (2). The first retaining component (6) includes one or more generally spherical members.

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