A high wear-resistant metal liner

Abstract

A high-wear-resistant metal liner is disclosed, comprising a multi-layer structure consisting of a base layer, an intermediate buffer layer, and an outer metal wear-resistant layer. The base layer and the intermediate buffer layer are fixedly connected by adhesive. Multiple parallel mounting slots are uniformly arranged on the surface of the intermediate buffer layer facing the metal wear-resistant layer. The metal wear-resistant layer is composed of alternating upright and inverted trapezoidal blocks, with their inclined surfaces tightly fitted. The outer surface of the combined structure serves as the working surface of the metal wear-resistant layer. The bottom of each upright and inverted trapezoidal block has a mounting block matching the shape of the mounting slot. Elastic wear-resistant pads are provided on the mounting blocks and mounting slots. Air grooves are provided on the inclined surfaces where the inverted and upright trapezoidal blocks collide to guide the airflow generated during the impact of the blocks to the outside. This design offers advantages such as high wear resistance and long service life.

Description

Technical Field

[0001] This invention relates to the field of crusher liner structure technology, specifically a high wear-resistant metal liner. Background Technology

[0002] As is well known, crushers mainly rely on impact energy to crush materials. When the crusher is working, the material is fed into the crushing chamber, where it is crushed to the required particle size by the impact, shearing and tearing action of the force-applying components and discharged out of the machine through the screen plate of the discharge section. Due to its harsh working conditions, the inner lining of the crusher's inner cavity wall is often severely worn, so it is necessary to install a lining plate device on the inner wall of the crusher.

[0003] Current liner devices generally adopt a modular structure, such as a base plate and wear-resistant protrusions made of wear-resistant material mounted on the base plate. The conventional structure is as follows: the base plate is fixed to the inner wall of the crusher cavity by locking devices, and the wear-resistant layer is fastened to the base plate by bolts or other locking devices or snap-fit ​​methods. The protrusions and friction posts on the outside of the wear-resistant layer serve as the working surface to withstand impact. This connection method and liner structure have many drawbacks, as analyzed below: First, although the wear-resistant layer is fastened to the base plate by bolts or other locking devices or snap-fit ​​methods, as the main impact-bearing surface, the impact force cannot be effectively dissipated under harsh working conditions and will ultimately act on the connection point. Therefore, the connection point is still a weak point that is easily damaged. In production, it is common to have to stop production to repair the connection point between the wear-resistant layer and the base plate. Second, during use, the liner often experiences severe wear in localized areas. Since most existing liners are integral structures, when a wear that may affect crushing performance occurs, the entire liner assembly needs to be replaced, resulting in high usage and maintenance costs for traditional liner devices. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a metal liner with high wear resistance.

[0005] The technical solution adopted in this invention is: a high wear-resistant metal liner, wherein the liner is a multi-layer structure composed of a base layer, an intermediate buffer layer and an outer metal wear-resistant layer. The base layer and the intermediate buffer layer are fixedly connected by an adhesive. Multiple parallel mounting slots are uniformly provided on the surface of the intermediate buffer layer facing the metal wear-resistant layer. The metal wear-resistant layer is composed of alternating upright trapezoidal blocks and inverted trapezoidal blocks, with the inclined surfaces of the upright and inverted trapezoidal blocks closely fitted. The outer surface of the entire structure is the working surface of the metal wear-resistant layer. The bottom of the upright and inverted trapezoidal blocks is provided with mounting blocks that match the shape of the mounting slots. Elastic wear-resistant pads are provided on the mounting blocks and mounting slots. An air groove is provided on the inclined surface where the inverted and upright trapezoidal blocks meet to guide the airflow generated during the impact of the upright and inverted trapezoidal blocks to the outside.

[0006] As a preferred embodiment, the air groove is disposed on the inclined surface of the trapezoidal block symmetrically disposed on both sides.

[0007] As a preferred embodiment, the air grooves on each side of the trapezoidal block extend from the center to both sides.

[0008] As a preferred embodiment, the cross-sectional shape of the air groove is triangular, and the depth of the air groove gradually increases from the middle to both sides.

[0009] As a preferred embodiment, the upright trapezoidal block and / or inverted trapezoidal block adopt a split structure.

[0010] As a preferred embodiment, arc-shaped protrusions are uniformly provided along the length direction on the working surfaces of the positive trapezoidal block and the inverted trapezoidal block. The shape of the arc-shaped protrusion is half of an isosceles ellipsoid. The three polar radii of the ellipsoid are set as a, b, and c, and a > b > c. Then, the arc-shaped protrusion is mounted on a plane determined by the two polar radii a and b, and the height of the arc-shaped protrusion is c.

[0011] As a preferred embodiment, the surface of the arc-shaped protrusion is provided with a wear-resistant coating with a thickness of 0.2-0.3mm, and its mounting plane is fixed to the working surface of the positive trapezoidal block and the inverted trapezoidal block by welding or bonding.

[0012] As a preferred option, the arc-shaped protrusion is made of a highly wear-resistant material, and its mounting surface is fixed to the working surface of the upright trapezoidal block and the inverted trapezoidal block by welding or bonding.

[0013] As a preferred embodiment, the mounting slot is composed of a spherical groove and a guide groove, and the mounting block is composed of a spherical block that matches the shape of the spherical groove and a guide plate. The spherical block has a certain amount of room for movement within the spherical groove, and the spherical block moves up and down within the spherical groove along the direction constrained by the guide plate on it.

[0014] As a preferred embodiment, the elastic wear-resistant pad is fixedly attached to the inner wall of the spherical groove with an adhesive, or the elastic wear-resistant pad is fixedly attached to the outer wall of the spherical block with an adhesive.

[0015] The beneficial effects of this invention are:

[0016] This solution optimizes the structure and installation method of the liner plate. The metal wear-resistant layer, serving as the working surface, is designed as a combination of interlocking trapezoidal and inverted trapezoidal blocks with their inclined surfaces touching. Air channels are provided on the interlocking inclined surfaces to guide the airflow generated during the impact of the trapezoidal blocks. The bottom is equipped with structurally compatible locking blocks, elastic wear-resistant pads, and grooved components. This provides a movable, highly wear-resistant metal liner plate structure with advantages such as excellent wear resistance and long service life. Specific benefits are demonstrated in the following aspects:

[0017] Firstly, the liner is a multi-layered structure consisting of a base plate layer, an intermediate buffer layer, and an outer metal wear-resistant layer. The metal wear-resistant layer is composed of alternating and tightly fitted upright and inverted trapezoidal blocks. The mounting blocks at the bottom of the upright and inverted trapezoidal blocks are engaged in mounting slots in the intermediate buffer layer, and an elastic wear-resistant pad is provided between the mounting blocks and the mounting slots. At the same time, the inclined surface where the inverted and upright trapezoidal blocks collide is provided with an air groove for discharging the airflow generated during the collision of the upright and inverted trapezoidal blocks to the outside. Based on the above structure, when the metal wear-resistant layer is subjected to impact, the upright and inverted trapezoidal blocks collide with each other, causing the mounting blocks to compress the elastic wear-resistant pad, so that the upright and inverted trapezoidal blocks receive the first buffer during the collision. At the same time, since there is an air groove on the inclined surface where the inverted and upright trapezoidal blocks collide, the impact force of the collision is dissipated when the airflow generated during the collision is discharged along the air groove, thus achieving the second buffer during the collision.

[0018] Secondly, as a further optimization, the metal wear-resistant layer is composed of alternating and closely fitted positive and negative trapezoidal blocks, and the positive and / or negative trapezoidal blocks adopt a split structure, which makes it more convenient and faster to replace the wear-resistant layer of the liner.

[0019] Thirdly, as a further optimization, the air grooves are symmetrically arranged on the inclined surfaces of the trapezoidal blocks on both sides, and the air grooves on each side of the trapezoidal blocks extend from the center to both sides. This structure allows the airflow generated when the inverted trapezoidal block and the trapezoidal block collide to be discharged along the symmetrical direction to the air grooves on both sides. The entire process can achieve a relatively stable collision process between the inverted trapezoidal block and the trapezoidal block.

[0020] Fourthly, as a further optimization, the mounting slot is composed of a spherical groove and a guide groove. The mounting block is composed of a spherical block that matches the shape of the spherical groove and a guide plate. The spherical block has a certain amount of room for movement within the spherical groove. The spherical block moves up and down within the spherical groove along the direction constrained by the guide plate on it, further realizing that the inverted trapezoidal block and the regular trapezoidal block are in a relatively stable state during the collision process.

[0021] Fifth, as a further optimization, arc-shaped protrusions are uniformly provided along the length of the working surfaces of the positive and inverted trapezoidal blocks. Preferably, the arc-shaped protrusions are structured as follows: the shape is half of an isosceles ellipsoid, with the three polar radii of the ellipsoid set as a, b, and c, where a > b > c. The arc-shaped protrusions are mounted on a plane determined by the two polar radii a and b, and the height of the arc-shaped protrusions is c. The mounting plane is fastened to the working surface of the wear-resistant layer. At the same time, the arc-shaped protrusions can be made of high wear-resistant materials or have a wear-resistant coating on the surface, which can further enhance the overall strength and wear resistance of the wear-resistant layer. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the connection between the substrate layer and the intermediate buffer layer in this invention;

[0026] Figure 4 This is a schematic diagram of the connection between the intermediate buffer layer and the metal wear-resistant layer of the present invention;

[0027] Figure 5 This is a schematic diagram of the first embodiment of the combination of a regular trapezoidal block and an inverted trapezoidal block;

[0028] Figure 6 This is a schematic diagram of a second embodiment of the combination of a regular trapezoidal block and an inverted trapezoidal block;

[0029] Figure 7 This is a schematic diagram of the intermediate wear-resistant layer;

[0030] Figure 8 This is a schematic diagram of the first embodiment of the trapezoidal block in this invention;

[0031] Figure 9 This is a schematic diagram of a second embodiment of the trapezoidal block in this invention.

[0032] Marked in the image:

[0033] 1. Substrate layer;

[0034] 2. Intermediate buffer layer; 20. Mounting slot; 21. Guide groove; 22. Spherical groove.

[0035] 3. Metal wear-resistant layer; 30. Positive trapezoidal block; 31. Inverted trapezoidal block; 32. Air groove; 33. Guide plate; 34. Spherical locking block;

[0036] 4. Adhesive layer;

[0037] 5. Elastic and wear-resistant pad;

[0038] 6. Arc-shaped raised piece. Detailed Implementation

[0039] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0040] It should be noted that, unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "a," "an," or "the," and similar words used in the specification and claims of this patent application do not express a limitation of quantity, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects having the same function.

[0041] Example 1

[0042] The following is in conjunction with the appendix Figure 1 , 3 -4. A detailed description of the structure and working process of this embodiment is provided:

[0043] As shown in the figure, a high wear-resistant metal liner is described. The high wear-resistant metal liner has a multi-layer structure consisting of a base layer 1, an intermediate buffer layer 2, and an outer wear-resistant metal layer 3. The base layer 1 is fastened to the inner wall of the crusher cavity, and the intermediate buffer layer 2 is fixedly connected to the base layer 1 by adhesive bonding. Figure 3 As shown, an adhesive layer 4 is provided between the intermediate buffer layer 2 and the substrate layer 1, and the intermediate buffer layer 2 and the substrate layer 1 are connected into an integral structure by an adhesive.

[0044] like Figure 4As shown, multiple parallel mounting slots 23 are evenly distributed on the surface of the intermediate buffer layer 2 facing the metal wear-resistant layer 3. The metal wear-resistant layer 3 is composed of alternating upright trapezoidal blocks 30 and inverted trapezoidal blocks 31. The inclined surfaces of the upright trapezoidal blocks 30 and inverted trapezoidal blocks 31 are tightly fitted, and their overall outer surface forms the working surface of the metal wear-resistant layer 3. The bottom of the upright trapezoidal blocks 30 and inverted trapezoidal blocks 31 are respectively provided with mounting blocks that match the shape of the mounting slots 20. The mounting blocks have a certain amount of movement within the mounting slots 20. Elastic wear-resistant pads 5 are provided between the mounting blocks and the mounting slots. The inclined surface where the inverted trapezoidal block and the regular trapezoidal block meet is provided with an air groove 32 for discharging the airflow generated during the collision between the regular and inverted trapezoidal blocks to the outside. By setting the above structure, in the actual operation of the liner, the working surface of the metal wear-resistant layer first responds to the impact. When the regular and inverted trapezoidal blocks collide with each other, they drive the mounting block to squeeze the elastic wear-resistant pad, so that the regular and inverted trapezoidal blocks receive the first buffer during the collision. At the same time, since there is an air groove on the inclined surface where the inverted trapezoidal block and the regular trapezoidal block meet, the impact force of the collision is unloaded when the airflow generated during the collision is discharged along the air groove, thus achieving the second buffer when the two collide with each other.

[0045] In this embodiment, the metal wear-resistant layer 3 can be made of high manganese steel.

[0046] Example 2

[0047] The following is in conjunction with the appendix Figure 2-4 The structure and working process of this embodiment are described in detail below:

[0048] It should be noted that: in this embodiment, an arc-shaped protrusion 6 is provided on the working surface of the metal wear-resistant layer. Other structural units are exactly the same as in embodiment 1. Therefore, the focus is on describing the structural features and working principle of the optimized arc-shaped protrusion 6.

[0049] In this plan, such as Figure 2 As shown, arc-shaped protrusions 6 are uniformly provided along the length direction on the working surfaces of the positive trapezoidal block 30 and the inverted trapezoidal block 31. The arc-shaped protrusions 6 preferably have the following structure: the shape of the arc-shaped protrusions 6 is half of an isosceles ellipsoid. The three polar radii of the ellipsoid are set as a, b, and c, and a > b > c. Then the arc-shaped protrusions are mounted on the mounting plane determined by the two polar radii a and b. The height of the arc-shaped protrusions is c. When the mounting plane of this structure is fastened to the working surface of the wear-resistant layer, the overall strength and wear resistance of the wear-resistant layer can be further enhanced.

[0050] To further improve the wear resistance of the arc-shaped protrusion 6, the following technical solution can be adopted:

[0051] Firstly, the surface of the arc-shaped protrusion is provided with a wear-resistant coating, the thickness of which is preferably 0.2-0.3mm, and its mounting surface is fixed to the working surface of the positive trapezoidal block and the inverted trapezoidal block by welding or bonding. Secondly, the arc-shaped protrusion is made of a highly wear-resistant material, and its mounting surface is fixed to the working surface of the positive trapezoidal block and the inverted trapezoidal block by welding or bonding.

[0052] Through fatigue testing, when Example 2 is equipped with arc-shaped protrusions with high wear resistance, its wear resistance and service life are better than those of Example 1, and the fault-free operation time of the liner is increased by more than 7%.

[0053] Example 3

[0054] It should be noted that: Example 3 is an optimization of the fit between the intermediate buffer layer and the metal wear-resistant layer based on Example 1, as described in detail below with reference to the accompanying drawings:

[0055] The following is in conjunction with the appendix Figure 5 and 7 The structure of this embodiment will be described in detail below:

[0056] As shown in the figure, the mounting slot 20 is composed of a spherical groove 22 and a guide groove 21; Figure 4 As shown, the mounting block consists of a ball-shaped block 34 that matches the shape of the ball-shaped groove 22 and a guide plate 33. The ball-shaped block 34 is fixedly connected to the bottom of the positive trapezoidal block 30 and the inverted trapezoidal block 31 through the guide plate 33 to form an integral structure. The ball-shaped block 34 has a certain amount of movement in the ball-shaped groove 22. When the working surface of the liner is impacted, the ball-shaped block 34 moves up and down in the ball-shaped groove 22 along the direction constrained by the guide groove 21 through the guide plate 33 on it. At the same time, the ball-shaped block 34 squeezes the elastic wear-resistant pad 5 to obtain buffer.

[0057] In this embodiment, as Figure 5 As shown, the elastic wear-resistant pad 5 is fixedly attached to the outer wall of the ball-shaped clip 34 by adhesive and forms an integral structure with the ball-shaped clip 34;

[0058] like Figure 7 As shown, the elastic wear-resistant pad 5 is fixedly attached to the inner wall of the spherical groove 22 by an adhesive and forms an integral structure with the spherical groove 22.

[0059] Through fatigue testing, Example 3 defined the matching method between the mounting slot 20 and the mounting block. The optimized structure has better service life indicators than Example 1, but slightly lower than Example 2.

[0060] Example 4

[0061] It should be noted that: Example 4 is based on Example 2, and the combination of the intermediate buffer layer and the metal wear-resistant layer has been optimized. The specific details are described below with reference to the accompanying drawings:

[0062] The following is in conjunction with the appendix Figure 6 and 7 The structure of this embodiment will be described in detail below:

[0063] As shown in the figure, the mounting slot 20 is composed of a spherical groove 22 and a guide groove 21; Figure 4 As shown, the mounting block consists of a ball-shaped block 34 that matches the shape of the ball-shaped groove 22 and a guide plate 33. The ball-shaped block 34 is fixedly connected to the bottom of the positive trapezoidal block 30 and the inverted trapezoidal block 31 through the guide plate 33 to form an integral structure. The ball-shaped block 34 has a certain amount of movement in the ball-shaped groove 22. When the working surface of the liner is impacted, the ball-shaped block 34 moves up and down in the ball-shaped groove 22 along the direction constrained by the guide groove 21 through the guide plate 33 on it. At the same time, the ball-shaped block 34 squeezes the elastic wear-resistant pad 5 to obtain buffer.

[0064] In this embodiment, as Figure 6 As shown, the elastic wear-resistant pad 5 is fixedly attached to the outer wall of the ball-shaped clip 34 by adhesive and forms an integral structure with the ball-shaped clip 34;

[0065] like Figure 7 As shown, the elastic wear-resistant pad 5 is fixedly attached to the inner wall of the spherical groove 22 by an adhesive and forms an integral structure with the spherical groove 22.

[0066] Through fatigue testing, the optimized structure in Example 4 showed better service life than that in Example 2.

[0067] Example 5

[0068] The following is in conjunction with the appendix Figure 8 The structure and working process of this embodiment are described in detail below:

[0069] It should be noted that this embodiment is an optimization of the structure of the elastic wear-resistant sleeve 36 based on embodiment 4. Therefore, the focus is on describing the structural features and working principle of the optimized elastic wear-resistant sleeve 36.

[0070] Further optimization involves arranging the air grooves 32 symmetrically on the inclined surfaces of the trapezoidal block on both sides. Each side of the trapezoidal block has an air groove extending from the center outwards, with a triangular cross-sectional shape and a depth that gradually increases from the center outwards. This structure ensures that when the inverted trapezoidal block collides with the trapezoidal block, the resulting airflow is directed symmetrically towards the air grooves on both sides, resulting in a relatively stable collision process.

[0071] It should be noted that in order to prevent the bottom of the trapezoidal block's air groove from being damaged due to stress concentration, the cross-sectional shape of the air groove should preferably be a triangle with a rounded transition. This structure can not only quickly discharge the airflow generated by the collision, but also will not reduce the service life of the trapezoidal block.

[0072] Through fatigue testing, the optimized air groove configuration in Example 5 showed that its wear resistance and service life were superior to those in Examples 1-4, and the trouble-free operation time of the liner was increased by more than 15%.

[0073] Example 6

[0074] The following is in conjunction with the appendix Figure 9 The structure and working process of this embodiment are described in detail below:

[0075] It should be noted that this embodiment is an optimization based on embodiment 4, and the regular trapezoidal block and / or inverted trapezoidal block adopt a split structure, such as... Figure 9 As shown, taking a regular trapezoidal block as an example, the regular trapezoidal block can be divided into multiple relatively independent small regular trapezoidal blocks along its length. During installation, multiple blocks are sequentially placed into the designated positions.

[0076] Through fatigue testing, the wear resistance and service life indicators of Example 6 are basically consistent with those of Example 5, except that it is more convenient and faster to replace the wear-resistant layer of the liner.

[0077] The contents not described in detail in the above embodiments are existing technologies.

[0078] It should be noted that although the present invention has been described through the above embodiments, the present invention may have many other embodiments. Without departing from the spirit and scope of the present invention, those skilled in the art can obviously make various corresponding changes and modifications to the present invention, but all such changes and modifications should fall within the scope of protection of the appended claims and their equivalents.

Claims

1. A high wear-resistant metal liner, characterized in that: The liner is a multi-layered structure consisting of a base layer, an intermediate buffer layer, and an outer metal wear-resistant layer. The base layer and the intermediate buffer layer are fixedly connected by adhesive. Multiple parallel mounting slots are evenly distributed on the surface of the intermediate buffer layer facing the metal wear-resistant layer. The metal wear-resistant layer is composed of alternating upright and inverted trapezoidal blocks, with their inclined surfaces tightly fitted. The outer surface of the entire structure forms the working surface of the metal wear-resistant layer. The bottom of each upright and inverted trapezoidal block has a mounting block that matches the shape of the mounting slot. The mounting block and mounting slot are equipped with elastic wear-resistant pads. On the inclined surface where the inverted trapezoidal block and the regular trapezoidal block meet, there is an air groove for discharging the airflow generated during the collision of the regular and inverted trapezoidal blocks to the outside. When dealing with the impact, the regular and inverted trapezoidal blocks drive the mounting block to squeeze the elastic wear-resistant pads during the collision, so that the regular and inverted trapezoidal blocks receive the first buffer during the collision. At the same time, the inclined surface where the inverted trapezoidal block and the regular trapezoidal block meet is equipped with an air groove. When the airflow generated during the collision is discharged along the air groove, the impact force of the collision is unloaded, realizing the second buffer when the two collide. The air grooves are arranged symmetrically on the inclined surfaces of the trapezoidal block on both sides, and the air grooves on each side of the trapezoidal block extend from the center to both sides. Arc-shaped protrusions are uniformly provided along the length of the working surfaces of the positive and inverted trapezoidal blocks. The shape of the arc-shaped protrusions is half of an isosceles ellipsoid. The three polar radii of the ellipsoid are set as a, b, and c, and a > b > c. The arc-shaped protrusions are mounted on the mounting plane determined by the two polar radii a and b. The height of the arc-shaped protrusions is c. The surface of the arc-shaped protrusions is provided with a wear-resistant coating.

2. The high wear-resistant metal liner according to claim 1, characterized in that: The cross-sectional shape of the air groove is triangular, and the depth of the air groove gradually increases from the middle to both sides.

3. The high wear-resistant metal liner according to claim 1, characterized in that: The upright trapezoidal block and / or inverted trapezoidal block adopt a split structure.

4. The high wear-resistant metal liner according to claim 1, characterized in that: The surface of the arc-shaped protrusion is covered with a wear-resistant coating with a thickness of 0.2-0.3mm, and its mounting plane is fixed to the working surface of the positive trapezoidal block and the inverted trapezoidal block by welding or bonding.

5. The high wear-resistant metal liner according to claim 1, characterized in that: The arc-shaped protrusion is made of a highly wear-resistant material, and its mounting surface is fixed to the working surface of the upright trapezoidal block and the inverted trapezoidal block by welding or bonding.

6. The high wear-resistant metal liner according to claim 1, characterized in that: The mounting slot is composed of a spherical groove and a guide groove. The mounting block is composed of a spherical block that matches the shape of the spherical groove and a guide plate. The spherical block has a certain amount of room for movement within the spherical groove. The spherical block moves up and down within the spherical groove along the direction constrained by the guide plate on it.

7. A high wear-resistant metal liner according to claim 1, characterized in that: The elastic wear-resistant pad is fixedly attached to the inner wall of the spherical groove with an adhesive, or the elastic wear-resistant pad is fixedly attached to the outer wall of the spherical block with an adhesive.

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