Liner for cone crusher

Abstract

The invention relates to removable devices for protecting crushers and consists in additional removable coverings used to protect the surfaces of an assembly against external mechanical effects, wear, corrosion, sticking, abrasion, and other such damaging external effects. The present liner consists of individual modules, each of which comprises a protective layer and a fastening layer that are bonded together by means of an adhesive layer. The protective layer of the liner is made of polyurethane, wear-resistant rubber or high-molecular-weight polyethylene, and the fastening layer is made of magnetic rubber which adheres to the walls of the housing by magnetic force. The protective layer of a liner module may be provided with apertures, for example, of a circular or square shape, to promote a self-lining effect. The liner should preferably cover all the surfaces to be protected, and the liner modules should have matching external dimensions so that they can be snuggly fitted together without gaps. The liner provides increased protection of the crusher.

Description

[0001] Lining for cone crusher

[0002] The invention relates to removable devices for protecting surfaces from wear, corrosion, abrasive effects and can be used in crushing units for construction, mining and other industries.

[0003] The subject of the present invention is known from the prior art as a surface lining and represents additional removable coatings used to protect the surfaces of units from external mechanical impact and wear, from corrosion, from sticky materials, from abrasive impact and similar external impacts that destroy the integrity of the surface.

[0004] It is known from the prior art that a lining is a protective surface covering made of a particularly strong material that can withstand significant abrasive impact and has increased wear resistance.

[0005] Linings can be made from metal, composite materials, fiberglass, high molecular weight polyethylene, and other similar materials.

[0006] The lining is installed on the surface to be protected and must be securely attached using suitable fasteners. Fasteners such as adhesives, screws, bolts and nuts, clamps, mechanical strips, and welding can be used.

[0007] The requirements for lining structures are determined by the tasks to be performed: the lining must be modular, durable and wear-resistant, installable and dismantled, and relatively inexpensive, since it is a consumable item.

[0008] It is known from prior art that a cone crusher comprises a movable and fixed crushing cone, forming a crushing chamber, and a discharge chute that transitions into discharge chutes through which the crushed material exits. The discharge chute is confined within the interior cavity of the crusher body.

[0009] The internal walls and other internal elements of the housing located in the discharge chute area are subject to abrasive wear from crushed material.

[0010] The crushed material is a stream of material particles that, under the action of its own weight, passes from the crushing chamber through the discharge chute, comes into contact with the internal elements of the structure and destroys the integrity of the metal surfaces.

[0011] Due to this design feature of the crushers, all elements subject to abrasive wear, in particular the discharge chute and discharge chutes, are protected by special wear-resistant coatings.

[0012] The body is one of the main, large and expensive parts of the crushing unit, therefore maintaining its working condition and increasing its service life is an important task.

[0013] Linings known from the prior art are typically modular and consist of wear-resistant linings of various sizes attached directly to the internal structural elements of the housing, for example, by welding, riveting or other permanent or detachable fasteners.

[0014] Wear-resistant pads must first be securely attached to the surface to be protected, and then, after wear and tear and the pad materials are no longer in working condition, the worn-out ones must be removed and replaced with new ones.

[0015] The work of replacing the liners is carried out from inside the crusher and is a labor-intensive operation due to the need to manually detach the wear linings from the housing wall at the permanent fastening points and install new linings.

[0016] One of the main difficulties is that working with difficult to remove lining fasteners, such as those using labor-intensive welding, gluing or bolting methods, requires the use of special tools, which is expensive both due to the loss of crusher downtime and the high labor intensity of the lining replacement operation.

[0017] Accordingly, there is a need for a wear-resistant lining in the design of a cone crusher that can be installed and removed relatively easily and quickly, reducing equipment downtime losses.

[0018] The requirements for lining designs in general are determined by the tasks they perform: the lining must be modular, durable, and wear-resistant, easily installed and removed, and relatively inexpensive, as it is a consumable component. Various lining designs and fasteners for protecting crusher housings are known from the prior art.

[0019] For example, the invention “Wear-resistant lining for a cone crusher”, “A wear-resistant liner for a cone crusher”, WO 2022268746 Al, published 12 / 29 / 2022, is known and is taken as a prototype.

[0020] The present invention provides a lining design and a fastening design for protecting the inner walls of a cone crusher housing, as shown in Fig. 1, which is part of the description.

[0021] As shown in Fig. 2, the lining consists of wear-resistant metal plates arranged in a modular fashion. Each module consists of two layers of plates: an inner supporting layer and plates attached to the outer wear-resistant layer.

[0022] The bearing plates are made of metal and feature special removable suspension brackets for mounting and securing them to the crusher body. Corresponding metal fasteners are provided on the crusher body to hold the bearing plates in place.

[0023] The outer wear-resistant layer plates are made of a special high-strength metal. They feature special hook-shaped fasteners for installation and retention on the supporting plates. The supporting plates also have matching receiving holes for the hooks, allowing for installation and removal of the outer plates.

[0024] The liner plates are arranged into individual segments, and the shape and size of each segment can be determined by its designated location within the crusher housing. Thus, the inner surface of the housing cone can be equipped with liner modules along the entire perimeter of the discharge chamber.

[0025] The outer wear plates themselves are preferably designed as vertically oriented rectangular segments. The carrier plates should preferably match the outer plates in shape. Thus, each outer wear plate simultaneously protects a section of the housing, the corresponding carrier plate, and the fasteners.

[0026] In practice, this design solution involves mounting the bearing plates on the housing, with each segment positioned in its designated location and remaining secured to it. At the same time, the outer wear plates are removable, mounted on the corresponding bearing plates, and can be replaced as needed.

[0027] The impact of the crushed material on the housing walls is uneven and inconsistent, resulting in uneven wear on the plates. Therefore, each wear plate is typically replaced individually, as it wears down and fails.

[0028] The proposed modular principle for the formation of wear-resistant plates allows for their replacement selectively, as needed, and with relatively little time and effort.

[0029] However, the solution proposed by the prototype has significant drawbacks.

[0030] The first of these is the mechanical fastening of the first load-bearing layer of lining plates to the crusher body. The number of such fasteners for each lining module must be sufficient and necessary to support the weight of the two-layer metal protective module itself and simultaneously resist the impact of the crushed particles. At the same time, it is clear that the plates are relatively heavy, as they must be made of wear-resistant, high-density metals, which ensures high strength. Therefore, the prior art invention proposes reinforced fasteners.

[0031] Making reinforced fasteners is a labor-intensive task, as it requires working with both the durable metal housing and the fastener material. Drilling holes in the housing negatively impacts the strength of the unit's housing, which is known to be subject to high vibration loads during the crushing process.

[0032] Furthermore, the prototype solution is expensive because the external wear plates are made of expensive steel grades and high-density alloys, and because attaching the plates to the housing is labor-intensive. Maintenance personnel also spend significant time inside the crusher removing and replacing the attached wear plates, resulting in high man-hour costs and increased equipment downtime. Therefore, the purpose of the present invention is to overcome these problems and create a lining design that offers the following characteristics: modularity, flexibility, light weight, high efficiency, and a long service life, low material costs, ease of attachment, and quick assembly and disassembly.

[0033] Among the materials with suitable properties for producing a protective wear layer with the above characteristics, the most suitable are polymeric materials: polyurethane, wear-resistant rubber, and high molecular weight polyethylene.

[0034] The problem is solved as follows.

[0035] A lining for a cone crusher designed to be installed on any ferromagnetic surface contains at least one lining module including a protective layer and a fixing layer, fastened together using an adhesive layer, wherein the protective layer is designed to provide protection from the destructive external impact of an abrasive material, contains at least one layer of wear-resistant material, which is made of a polymer material, polyurethane, wear-resistant rubber, or high-molecular polyethylene, the fixing layer is made of magnetic rubber with the ability to be installed and held on a ferromagnetic surface with a force sufficient for fixation, and the adhesive layer is made of a substance with adhesive properties with the ability to adhesively interact with the corresponding materials of the protective and fixing layers.

[0036] The lining for a cone crusher is available in the following design options.

[0037] A lining for a cone crusher characterized by the fact that the protective layer of the lining module is combined and is made using two or more different types of polymeric materials simultaneously.

[0038] A lining for a cone crusher characterized by the fact that the protective layer of the lining module is made with holes.

[0039] A lining for a cone crusher characterized by a protective layer of the lining module with square cross-section holes. A lining for a cone crusher characterized by a protective layer of the lining module with round cross-section holes.

[0040] A lining for a cone crusher characterized in that the depth H of the holes in the protective layer of the lining module is less than the thickness S of the protective layer.

[0041] The lining for a cone crusher is distinguished by the fact that it includes a number of lining modules necessary and sufficient to cover all protected surfaces, and all lining modules used are coordinated with each other in external dimensions and are installed close to each other without gaps.

[0042] A lining for a cone crusher is distinguished by the fact that the shape of each individual lining module is made according to the shape of the protected surface on which it is installed.

[0043] Fig. 1 shows the structure of the lining module and the layers included in it.

[0044] Fig. 2 and 3 show embodiments of a lining module in which the protective layer is made with holes.

[0045] Fig. 4 shows a discharge chute protected by lining modules.

[0046] Fig. 5 and 6 show the discharge chute in the cone crusher housing, protected by lining modules.

[0047] The invention is structurally implemented as follows.

[0048] To assemble the structure of the lining module, a protective layer 3 is attached to the fixing layer 1, Fig. 1, using an adhesive layer 2.

[0049] Fixing layer 1 is made of magnetic rubber.

[0050] Magnetic rubber, also known as magnetic vinyl, is an elastic, rubber-like polymer material that combines the properties of rubber and a permanent magnet. It consists primarily of magnetic powder (ferrite), along with polymers, antioxidants, and plasticizers.

[0051] During manufacturing, magnetic rubber is magnetized on only one side, so that the magnetic field lines are aligned parallel to the material's surface. The alternating magnetic poles on the material's surface ensure its adhesion to any ferromagnetic surface. This material exhibits stable magnetic properties, a long service life, mechanical strength, corrosion resistance, light weight, and elasticity.

[0052] Protective layer 3 is made of wear-resistant, high-density materials such as polyurethane, wear-resistant rubber, or high-molecular polyethylene.

[0053] The connection of the protective 3 and fixing 1 layers is carried out using the adhesive layer 2. The adhesive composition of layer 2 is selected with the possibility of adhesive interaction with the corresponding materials used to manufacture the layers.

[0054] The ratio of the thicknesses of all module layers is selected depending on the specific application of the lining: the technical parameters and geometry of the surface being protected, the composition, impact force, and flow density of abrasive particles, etc. At the same time, the ratio of layer thicknesses must ensure the necessary and sufficient elasticity of the lining module against bending and torsion.

[0055] A variant of the lining design is to make a protective layer 3 with holes, Fig. 2 and 3.

[0056] The holes are made in the thickness of protective layer 3 and can be through or blind. The remaining layers remain unchanged.

[0057] Fig. 2 shows a variant of the design of a lining module with non-through holes in the protective layer 4, made of rectangular cross-section.

[0058] The design of the protective layer with holes is intended to create a self-lining effect, in which particles of abrasive material fill the holes in the protective layer 4.

[0059] The self-lining effect occurs when, under the force of the abrasive particle flow striking the protective layer 4, abrasive particles of varying sizes naturally and randomly penetrate and become firmly lodged in the holes, completely filling them. This provides additional protection for the material of the protective layer 4 from wear.

[0060] As a result, after some time of operation, the outer working surface of protective layer 4 becomes non-uniform, consisting partly of the wear-resistant layer material and partly of abrasive particles. If the abrasive particles are dislodged from the hole by the force of the flow, the vacated space is filled by more particles.

[0061] The ratio of the hole size to the distance between the holes can vary and is selected based on the particle size characteristics of the abrasive particles in the flow. Generally, the ratio of these two values ​​can be equal: the hole size equals the distance between the holes. Figures 2 and 3 show a configuration in which the hole size equals the distance between them.

[0062] The geometry of the holes can vary; for example, Fig. 3 shows a variant of protective layer 5 with round holes. Everything stated above regarding square holes applies equally to round holes.

[0063] The geometry of the holes can be, in particular, triangular, diamond-shaped, trapezoidal, oval, the choice of the geometry of the holes does not directly affect the efficiency of self-lining.

[0064] Preferences for hole geometry are determined to a greater extent by the material used and the manufacturing technology of the protective layer itself, rather than by operational efficiency, which is practically the same.

[0065] The efficiency of self-lining is largely influenced by the fact that the size of the holes is related to the granulometric size of the main constituent particles of the abrasive flow, then the abrasive fills the hole of any shape equally effectively.

[0066] Fig. 2 shows a preferred embodiment of the relationship between the thickness S of the protective layer 4 and the depth H of the square-section hole. The holes in the protective layer 4 can be made through, but in the preferred embodiment, the depth H of the hole is less than the thickness S of the layer 4.

[0067] In the through-hole version, i.e. when the dimension S is equal to the dimension H, there are several limitations: this reduces the contact area of ​​the protective layer 4 and the fixing layer 1, which can weaken the strength of the layer bond; the bonding adhesive 2 can penetrate the holes from below, reducing their depth, as well as weakening the bonding strength of the layers and increasing the ineffective consumption of the adhesive.

[0068] Thus, the implementation of protective layer 4 or 5 with non-through holes implements in practice the self-lining effect, in which particles of abrasive material stuck in the holes act as a protection for the wear-resistant material of layer 4 from the destructive action of the abrasive flow.

[0069] A variant of the lining design is to construct the protective layer 3 from several different materials simultaneously, for example, from two different materials, as shown in Fig. 3. One part 15 of the protective layer is made of one type of material with certain technical characteristics, and the other part 16 is made of a different type of material with different characteristics. Layers 15 and 16 are joined together during the manufacturing process by any method acceptable for the materials used. In this case, the fixing layer 1 and the adhesive layer 2 remain common to both protective materials used and are not separated. This design of the protective layer is suitable for use in cases where the flow of abrasive material is non-uniform and / or impacts the lining module with varying intensity.

[0070] The proposed lining design is simple and easy to use. No special fasteners are required for installing the lining modules on the surface. The only requirement is that the surface being protected be a hard material capable of being magnetized by an external magnetic field and partially retaining the acquired magnetization, such as metals and their alloys. Since it is known from prior art that virtually all structural components of a crushing unit operating around abrasive flows, i.e., those subject to high mechanical loads, are made of metal, the proposed magnetic lining for crusher protection has a wide range of applications.

[0071] The use of a lining to protect the cone crusher body is shown in Figs. 5 and 6.

[0072] The body of the 10 cone crusher is made of metals with certain strength characteristics, usually in the form of a cylinder expanding downwards, so the walls of the body have a slight slope.

[0073] The housing 10 has several technical windows made as through holes in the thickness of the housing wall, round or of any other shape, intended for technical maintenance of the crusher.

[0074] The housing 10 has special holes in the thickness of the housing for connecting the drive from the engine.

[0075] The body 10 has internal structural stiffening ribs located radially.

[0076] As stated above, the discharge chamber, through which the crushed material passes from the crushing chamber, is formed by the internal walls of the housing 10, and at the bottom of the chamber there is a discharge chute 6 for removing the crushed material outside the crusher.

[0077] The gutter 6 is an inclined pipe, for example, of rectangular, square or round cross-section, and can be made with one or more removable walls.

[0078] All structural elements of the discharge chamber and discharge chute are subject to abrasive wear, so they are lined to protect the integrity and extend the service life of the housing material.

[0079] The magnetic layer lining proposed in the present invention can be used to protect any surfaces of a crusher.

[0080] The lining is modular and consists of at least one, and usually a set of lining modules, designed with the possibility of their installation on the walls of the housing 10.

[0081] The fixing layer 14 of the lining is made of magnetic rubber.

[0082] It is advisable to make the protective layer 13 of the lining from wear-resistant polymeric materials, such as polyurethane, wear-resistant rubber or high-molecular polyethylene.

[0083] Fig. 5 shows a sectional view of the cylinder of the crusher housing 10 and the lining modules installed in its internal cavity.

[0084] The installation and retention of the lining module on the housing wall occurs due to the magnetization of the fixing magnetic layer 14 to the metal wall of the housing 10. The magnetic force mainly depends on the thickness of the fixing magnetic layer 14 made of magnetic rubber and the overall size of its surface.

[0085] In the general version, lining modules can be made of the same standard size and installed at any place on the wall of the housing to be protected.

[0086] In a preferred embodiment, it is advisable to manufacture each lining module with an individual configuration, in shape and size, configured for installation in a specific location intended for it in the housing to be protected.

[0087] For example, lining module 11 is a trapezoidal module, expanding downwards, and is designed for installation on a solid, unperforated section of the housing wall. The trapezoidal shape of module 11 replicates the trapezoidal geometry of a separate segment of the downwardly expanding housing wall, and the elastic properties of module 11 allow it to be positioned flush against the curved cylindrical wall of housing 10.

[0088] The lining module 12 is a trapezoidal module, expanding downwards, having a recess that exactly repeats the shape of a round window in the wall of the housing 10, and is intended for installation on the corresponding part of the wall, including the window.

[0089] In this case, lining modules 11 and 12 preferably have even straight edges and external perimeter dimensions that are consistent with each other, which makes it possible to place them close to each other during installation, without gaps.

[0090] Fig. 6 shows how the lining modules cover the entire surface of the inner walls of the cylinder of the housing 10. The modules are joined to each other tightly, without gaps and spaces, due to the consistency of their external dimensions and contours.

[0091] This type of body protection is preferable as the most effective.

[0092] At the same time, despite the various use cases, the geometry of the outer contours of the lining modules can be any. It is important, when placing them on the protected surface, to adhere to the effective rule of joining their edges tightly to each other, without gaps or cracks, preventing or minimizing the possibility of abrasive particles penetrating between them.

[0093] The external size and quantity of lining modules should be determined based on the specific housing wall geometry and the radius of curvature of the housing cylinder. It is preferable for the modules to be sized sufficiently to avoid unnecessary increases in the length and number of joints between modules, and to ensure that the modules remain flexible and conform to the radius of curvature of the housing wall.

[0094] Regardless of the edge geometry, the lining modules must cover the entire surface along the inner circumference of the housing cylinder, without the need to additionally fasten the plates together.

[0095] All unloading elements of the crushing unit must be protected.

[0096] Fig. 4 shows a discharge chute 6 with a rectangular cross-section and equipped with lining modules. In this example, lining modules 7, 8, and 9, made with openings in the protective layer of a square cross-section, are installed on all internal surfaces of the chute 6.

[0097] To protect discharge chute 6, it is preferable for the lining to be modular, with each module precisely sized to match the surface being protected. For example, to line the bottom surface of chute 6, lining module 9 is precisely sized to match the bottom. If all lining modules 7, 8, and 9 for chute 6 are precisely sized, they fit snugly into their designated locations, without gaps or crevices, preventing or minimizing the penetration of abrasive particles between them, as shown in Fig. 4.

[0098] To install and secure the lining in its designated location, simply place the lining module against the surface, and the magnetic fixing layer 1 will adhere to the surface with a force sufficient to hold the lining module in place. No additional fastening of the modules is required.

[0099] To remove the lining, you need to apply sufficient force to overcome the magnetic force and simply detach the magnetic fixing layer from the protected surface.

[0100] The required magnetic fixing force, which determines the thickness of magnetic fixing layer 1, is calculated based on the density and force of the abrasive flow acting on the surface of chute 6, as well as the weight of the lining itself. After a certain time of abrasive material delivery, small abrasive particles become trapped in the openings in the protective layer of the lining. As a result, the abrasive flow falls on a combined surface consisting partly of the protective layer material and partly of compacted abrasive particles. In other words, the abrasive particles themselves protect the surface of the protective layer, or are self-lined.

[0101] It is known that the flow of abrasive material has variable characteristics and therefore affects the surfaces of chute 6 unevenly. Consequently, liner wear along the length of chute 6 occurs unevenly. Clearly, liner 9 at the bottom of the chute is subject to greater stress and requires replacement more frequently than liner 7 on the vertical side wall. Lining replacement involves detaching and removing a single module, then replacing it with a new one. The remaining modules, which do not require replacement, can remain in place.

[0102] To protect internal housing components with complex geometries, it is advisable to manufacture custom-shaped lining plates. The plate's shape should preferably match the shape of the protected component, with its edges aligned and capable of seamlessly joining adjacent linings of different configurations.

[0103] In this case, it's advisable to cast the protective layer of the lining plate from a material that can be processed this way, such as polyurethane. Then, a fixing layer of magnetic rubber is applied to the shaped blank using an adhesive layer.

[0104] A distinctive feature of the proposed lining is the presence of a continuous, uninterrupted magnetic fixing layer, connected to the protective layer by an adhesive layer, which allows the plate to be securely held on any surface, including inclined ones, of the housing elements.

[0105] Using this lining eliminates the need for any additional fasteners, either removable or permanent, on the surfaces being protected. The lining's magnetic layer serves as the fastening.

[0106] A distinctive feature of the proposed solution is the elasticity of the lining plate, which is formed due to the elasticity of all the layers that form it, allowing the plate to bend and repeat the cylindrical geometry of the inner walls of the housing.

[0107] Due to this elasticity, the lining plates fit tightly to the concave surface of the housing, leaving no voids or gaps, which allows it to be more securely fixed in place.

[0108] A distinctive feature of the proposed solution is the ability to manufacture lining plates in virtually any size and shape. Theoretically, each of the polymers mentioned for the protective layer, or their combinations, can be configured into any complex shape using modern manufacturing methods: casting, pressing, additive manufacturing, and so on. It is important to maintain the ability to firmly bond the corresponding magnetic fixing layer to the resulting protective layer shape.

[0109] This makes it possible to coat virtually any structural element with complex geometry with such linings, such as the casing stiffeners inside the discharge chute. Another distinctive feature of the proposed solution is the perforated protective layer 13.

[0110] The holes are preferably not through-holes, but the size, depth, and spacing of the holes should be selected based on the particle size of the material being crushed in a given machine. Under the force of the crushed material flow, the granules are tightly packed into the appropriately sized holes and remain there, creating a self-lining effect in which the material particles become elements of the protective layer 13.

[0111] A distinctive feature of the proposed solution is the modular principle of the lining plates, which makes it possible to take into account the non-uniform impact of the abrasive flow on the surface, the different wear of surface segments, and replace the modules as they wear out.

[0112] The thickness of the layers and the ratio of the layer thicknesses of the lining plates may be the same for all plates used in the protected unit, or may be different, individually selected for each plate depending on its shape, location of installation and the level of abrasive impact on a given specific area.

[0113] The material of protective layer 13 may be the same for all liner plates, or it may be different, individually selected for each plate depending on its installation location, its configuration and geometry, and the degree of abrasive action on a given section of the unit. Accordingly, the wear resistance of different liner plates used to line the same crusher may vary and reflect specific operating conditions.

[0114] The size and configuration of the holes in the protective layer 13 may be the same for all lining plates, or may be different.

[0115] A distinctive feature is the process of replacing each lining plate, which occurs separately, by simply mechanically separating the plate from the surface, for which it is necessary to apply an external force necessary and sufficient to overcome the magnetic force of the fixing layer 14.

[0116] Each liner plate can be replaced individually, independently of the others, as needed, as the plates are not attached to each other. The ease of installation and replacement of magnetic liner plates makes their use efficient, fast, and convenient.

[0117] The level of protection and service life of the lining plates can be adjusted by the materials used and the thickness of the protective layer.

[0118] An individual approach to the materials used and the technical parameters of each specific lining plate used to protect the crusher allows for more efficient use of materials and production resources, an increase in their service life, and more effective protection of individual surfaces of the crushing unit.

Claims

Invention formula 1. A lining for a cone crusher, configured to be installed on any ferromagnetic surface, comprising at least one lining module including a protective layer and a fixing layer, fastened together by means of an adhesive layer, wherein the protective layer is configured to provide protection from the destructive external impact of an abrasive material, contains at least a layer of wear-resistant material, which is made of a polymer material, polyurethane, wear-resistant rubber or high-molecular polyethylene, the fixing layer is made of magnetic rubber with the ability to be installed and held on a ferromagnetic surface with a force sufficient for fixation, and the adhesive layer is configured to adhesively interact with the corresponding materials of the protective and fixing layers.

2. A lining for a cone crusher according to item 1, characterized in that the protective layer of the rubbing module is combined and is made using two or more different types of polymeric materials at the same time.

3. A lining for a cone crusher according to item 1, characterized in that the protective layer of the grinding module is made with holes.

4. Lining for a cone crusher according to item 3, characterized in that the protective layer of the grinding module is made with square-section holes.

5. Lining for a cone crusher according to item 3, characterized in that the protective layer of the grinding module is made with round cross-section holes.

6. A lining for a cone crusher according to item 3, characterized in that the depth of the holes in the protective layer of the lining module is less than the thickness of the protective layer.

7. A lining for a cone crusher according to item 1, characterized in that it includes a number of lining modules necessary and sufficient to cover all surfaces to be protected, and all lining modules used are coordinated with each other in external dimensions and are installed close to each other without gaps.

8. A lining for a cone crusher according to paragraph 1, characterized in that the shape of each individual lining module is made individually according to the shape of the protected surface on which it is installed.

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