Paver conveyor wear plate

Abstract

A wear plate for a conveyor of a paver has a bend at one axial end, a sloped flat surface at the other axial end, a protrusion having a hole extending from the side surface, or a protrusion having a tapered configuration extending from the side surface.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a feeder bed protection system for a paver. In particular, the present disclosure relates to a feeder bed protection system including a wear plate that includes a locating tab / lobe and / or a beveled interface. BACKGROUND

[0002] Pavers, such as asphalt pavers, are generally self-propelled machines designed to receive, convey, distribute, and partially compact paving material, such as asphalt. Typically, a paver receives paving material in a hopper located at the front of the machine, conveys the paving material from the hopper to the rear of the machine using parallel slat conveyors (which can be referred to as a feeder system), distributes the paving material along a desired width, and compacts the paving material into a mat with a screed. Each slat conveyor that moves the paving material from the receiving hopper to the rear of the paver is generally comprised of two parallel slat chains (which can also be referred to as conveyor chains) with a plurality of transverse slats (which can also be referred to as feeder bars) connected between the slat chains. Each slat chain is pulled by one of two sprockets mounted on a common axle, which in turn is driven by a suitable power source.

[0003] Paving material is typically asphalt and is composed of a black, high- viscosity liquid or semi-solid. When used in road construction, asphalt is typically used as a binder for gravel or rock aggregate. The raw mixture is referred to as "asphalt aggregate" and the finished road paving material is commonly referred to as "asphalt concrete." Asphalt aggregate is typically stored and transported at temperatures around 150 degrees Celsius to prevent hardening. Accordingly, the conveyor system used to direct the asphalt aggregate through the feeder area of the paver is required to withstand exposure to high temperatures and the incorporation of coarse gravel or rock particles (abrasives) within the aggregate. In particular, the feeder bed is subjected to significant wear caused by the asphalt aggregate, and more particularly, the conveying of the aggregate through the feeder area. Accordingly, wear plates are typically provided as part of the feeder protection system to protect the feeder bed from wear.

[0004] These wear plates are typically held in place using fasteners that can be exposed to the asphalt, thereby making their removal problematic. Also, the problem of "digging in" when the feeder bars pass over the joints of the wear plates or the problem of the feeder bars wearing when the feeder bars rotate around the end drive sprocket occurs in current feeder protection systems.

[0005] Chinese Patent No. CN20280944U discloses a wear plate having a bend that can guide the conveyor chain around the end drive sprocket. However, this patent does not address simplifying the assembly or disassembly of the wear plate with the feeder protection system, thereby preventing "digging in" when the feeder bars pass over the joints of the wear plates, etc.

[0006] Accordingly, there remains a need for continued improvements in feeder protection systems. SUMMARY

[0007] A paving machine according to an embodiment of the disclosure can include a frame, a screed, a hopper supported on the frame and configured to receive paving material, a feeder including a feeder bed extending from the hopper to the screed, a conveyor arranged above the feeder bed for conveying the paving material to the feeder, and a feeder protection system including at least a first pair of wear plates covering the feeder bed. Each of the pair of wear plates can include at least one projection defining a projection aperture.

[0008] A wear plate according to an embodiment of the disclosure can include a body defining a longitudinal axis and a lateral axis perpendicular to the longitudinal axis. A first axial end, a second axial end, a first side surface extending from the first axial end to the second axial end, and a second side surface extending from the first axial end to the second axial end can also be provided. A first plurality of projections can be provided on the first side surface, and a second plurality of projections can be provided on the second side surface. At least one projection of the first plurality of projections can define a projection aperture, and at least one of the second plurality of projections can define a projection aperture.

[0009] A wear plate according to another embodiment of the disclosure can include a body defining a longitudinal axis and a lateral axis perpendicular to the longitudinal axis. A first axial end, a second axial end, a first side surface extending from the first axial end to the second axial end, and a second side surface extending from the first axial end to the second axial end can also be provided. A first plurality of projections can be provided on the first side surface, and a second plurality of projections can be provided on the second side surface. The first axial end can include a first inclined planar surface relative to the lateral axis, the first inclined planar surface forming an acute angle with the lateral axis, and the second axial end can include a bend defining a radius of curvature in a plane perpendicular to the lateral axis. BRIEF DESCRIPTION OF DRAWINGS

[0010] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure. In the drawings:

[0011] Figure 1 is a side view of a machine, such as a paving machine, according to various embodiments of the disclosure that can use unexposed fasteners to install a conveyor wear plate to a conveyor system in a hopper of the machine.

[0012] Figure 2 isFigure 1 A perspective view of the machine's feeder / hopper, showing the conveyor wear plate installed in the feeder / hopper, with no fasteners exposed inside the feeder / hopper.

[0013] Figure 3 yes Figure 2 A perspective view of a portion of a feeder / hopper, showing a frame member with a raised groove for receiving a wear plate of a conveyor according to an embodiment of the present disclosure.

[0014] Figure 4 yes Figure 2 Another perspective view of another part of the feeder / hopper depicts a central chain guard receiving fasteners that are inserted through the bed of the feeder and through raised holes in the conveyor's wear plate to secure the central chain guard and wear plate in place. It can be seen that the fasteners are isolated from the interior of the feeder, which contains any abrasive material.

[0015] Figure 5 This is a side view of the cut-off end of the feeder / hopper, showing the end drive sprocket and a bend in the wear-resistant plate constructed according to an embodiment of this disclosure, which reduces wear on the feeder rod (not clearly shown) as the conveyor chain passes around the sprocket. For clarity, only one link is shown at the location where it may come into contact with the wear-resistant plate.

[0016] Figure 6 A perspective view including a set of abrasion plates with protrusions constructed according to embodiments of the present disclosure.

[0017] Figure 7 yes Figure 6 A magnified detail of the side protrusions on the wear-resistant plate.

[0018] Figure 8 A top view including a set of abrasion-resistant plates with protrusions constructed according to another embodiment of the present invention.

[0019] Figure 9 yes Figure 8 A magnified detail of the inclined interface of the wear-resistant plate. Detailed Implementation

[0020] Reference will now be made in detail embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. In all of the drawings, like reference numerals will be used to denote like or similar components. In some instances, reference numerals will be indicated in the written description and the drawings will show the reference numerals followed by a letter (e.g., 100a, 100b) or followed by an apostrophe (e.g., 100', 100") and the like. It will be understood that the use of a letter or an apostrophe following a reference numeral is used to indicate that these features have similar shapes and similar functions, which is often the case when the geometry is mirrored about a plane of symmetry. For ease of exposition in the written description, the letters and apostrophes are not generally included herein, but can be shown in the drawings to indicate the repetition of features having similar or identical functions or geometries discussed in the written description.

[0021] Various embodiments of apparatuses and methods will be described herein with respect to a paver, a feeder / hopper, and a feeder protection system having wear plates configured in accordance with various embodiments of the present disclosure.

[0022] In some embodiments, the wear plates can reduce feeder bar and conveyor chain wear, are easy to assemble, and allow for the use of hidden fasteners relative to the hopper / feeder to help prevent the heads of the fasteners from being clogged with asphalt or other abrasives.

[0023] An exemplary embodiment of a paver 100 is generally shown in Figure 1 The paver 100 (which can also be referred to as an asphalt paver) can be any machine for distributing a layer of paving material P on a surface S of a roadway or other area. The paver 100 generally includes a tractor portion 112 including a power source 114 (e.g., an internal combustion engine), ground-engaging propulsion elements 116 some or all of which can be powered by the power source 114, and an operator control station 118 (which can also be referred to as a cab). The power source 114, the ground-engaging propulsion elements 116, and the operator control station 118 can all be supported on a frame 120 of the machine 100. The frame 120 can also support various other components and systems, including a hopper 122 supported on a front portion 124 of the frame 120 for receiving paving material P.

[0024] Reference will now be made in detail embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. In all of the drawings, like reference numerals will be used to denote like or similar components. In some instances, reference numerals will be indicated in the written description and the drawings will show the reference numerals followed by a letter (e.g., 100a, 100b) or followed by an apostrophe (e.g., 100', 100") and the like. It will be understood that the use of a letter or an apostrophe following a reference numeral is used to indicate that these features have similar shapes and similar functions, which is often the case when the geometry is mirrored about a plane of symmetry. For ease of exposition in the written description, the letters and apostrophes are not generally included herein, but can be shown in the drawings to indicate the repetition of features having similar or identical functions or geometries discussed in the written description. Figure 2Discussion is made of a conveyor 126, which can also be supported on the frame 120 and can convey paving material P received within the hopper 122 to a screed 128 (e.g., a free-floating screed) coupled with the paver 100 at a rear portion 130 of the frame 120, e.g., via a tow arm. The screed 128 can distribute and at least partially compact the paving material P into a mat on the desired paving surface S. The tractor portion 112 of the paver 100 can also include hydraulic drives and controls, as well as various other known paver components for operating the various systems and components of the paver 100. The screed 128 of the paver 110 can also include additional components and systems, such as screed arms, vibrators, sensors, and controllers. Such additional systems and components are not within the scope of the present disclosure and, as such, will not be discussed in greater detail herein.

[0025] Turning now to Figure 2 , the hopper 122 can generally include two hopper walls 140, 142 that are pivotable relative to the frame 120 to direct paving material P toward a feeder 144, which can be received within the hopper 122 from a dump truck traveling ahead of the paver 100. The feeder 144 or feeder area can generally represent a conveyor area of the paver 100 where paving material P is received at the front portion 124 of the machine 100 and passed along the conveyor area to the rear portion 130 of the machine 100 (see Figure 1 ).

[0026] With continued reference to Figure 2 , the feeder 144 includes a feeder floor 146 (see Figure 4 , which can also be referred to as a feeder bed) that can be connected to the frame 120 and can extend from the hopper 122 to the screed 128 (as shown in Figure 1 ). As shown in Figure 2 , the conveyor 126 can include two parallel slat chains 148 (which can also be referred to as conveyor chains) between which a plurality of cross slats 150 (which can also be referred to as feeder bars) are connected. Each slat chain 148 can be pulled by one or more sprockets 152 (e.g., end sprockets, not shown in Figure 2 , but shown in Figure 5 ) that can be mounted on a common shaft and driven by an appropriate power source. During operation of the conveyor 126, the cross slats / feeder bars 150 are positioned above and move along the feeder floor 146 to convey the paving material P through the feeder 144.

[0027] Reference is now made to Figures 2 to 9 , the paver 100, which can employ a feeder protection system 200 according to various embodiments of the present disclosure, will now be discussed.

[0028] From Figure 2 and Figures 6 to 9 the start, the feeder protection system 200 can include at least a first pair of wear plates 300a, 300b, 400a, 400b covering the feeder bed 146. As Figures 6 to 9 is best seen, each of the pair of wear plates 300a, 300b, 400a, 400b can include at least one protrusion 302a, 302b, 402a, 402b defining a protrusion aperture 304a, 304b, 404a, 404b.

[0029] As Figure 4 is best seen, the feeder bed 146 can also define feeder bed apertures 156 aligned with the protrusion apertures 304a, 304b, etc. Similarly, the feeder protection system 200 can also include a chain guard 158 (e.g., a center chain guard) defining a floor aperture 160 that is also aligned with the protrusion apertures 304a, 304b, etc. As a result of this arrangement, the feeder bed apertures 156, the protrusion apertures 304a, 304b, and the floor aperture 160 of the chain guard 158 are configured to receive the same fastener 162, the body and head of which is isolated from or not obscured by the asphalt or other abrasive material present in the hopper or feeder.

[0030] Turning now to Figure 3 , the frame 120 can include frame members 164 (e.g., side frame members) defining a slot 166 (which can form a complete rectangular profile or other enclosed perimeter, but need not do so) configured to receive at least one protrusion 302a, 302b for quick assembly and disassembly.

[0031] As Figure 2 , 6 and 8, the conveyor 126 defines a direction of travel T, and each of the pair of wear plates 300a, 300b, 400a, 400b defines a longitudinal axis 306a, 306b, 406a, 406b parallel to the direction of travel T. This can not be the case for other embodiments of the present disclosure.

[0032] Each of the wear plates 300a, 300b, 400a, 400b defines a first axial end 308a, 308b, 408a, 408b including a first straight surface 310a, 310b, 410a, 410b, and a second axial end 312a, 312b, 412a, 412b including a curved portion 314a, 314b, 414a, 414b defining a radius of curvature 315 (see Figure 5 ). In certain embodiments, the radius of curvature of the curved portion can be in the range of 80.0 mm to 145.0 mm, providing for proper guidance and clearance between the wear plate and the conveyor chain and / or feeder bar.

[0033] In some embodiments, as shown in Figure 9 In some embodiments, the first straight surface 410a, 410b of the first axial end 408a, 408b can form an oblique angle 415 relative to the direction of travel T (or longitudinal axis 406a, 406b) of the conveyor 126.

[0034] The raised hole 304a, 304b, 404a, 404b can have any suitable shape, such as a closed circular periphery or an open slot, which can ease installation when the fastener has been seated, etc. In Figure 4 , 7 and 9, the raised hole 304a, 304b, 404a, 404b can be a U-shaped open slot (as best seen in Figure 7 ) or half of a U-shaped open slot (when disposed proximate an axial end).

[0035] Now, a wear plate according to another embodiment of the disclosure will be discussed, which can be provided as a replacement part. Figures 5 to 9

[0036] As best seen in Figure 6 , 8 and 9, the wear plate 300a, 300b, 400a, 400b can comprise an elongated body defining a longitudinal axis 306a, 306b, 406a, 406b (extending along the direction of travel T of the conveyor 126, which can be the direction of greatest extent, but need not be), and a transverse axis 316a, 316b, 416a, 416b perpendicular to the longitudinal axis 306a, 306b, 406a, 406b.

[0037] A first axial end 308a, 308b, 408a, 408b, a second axial end 312a, 312b, 412a, 412b, a first side surface 318a, 318b, 418a, 418b extending from the first axial end 308a, 308b, 408a, 408b to the second axial end 312a, 312b, 412a, 412b, and a second side surface 320a, 320b, 420a, 420b extending from the first axial end 308a, 308b, 408a, 408b to the second axial end 312a, 312b, 412a, 412b can be provided.

[0038] ​As mentioned earlier herein, a first plurality of protrusions 302a, 302b, 402a, 402b can be disposed on the first side surface 318a, 318b, 418a, 418b, and a second plurality of protrusions 302a, 302b, 402a, 402b can be disposed on the second side surface 320a, 320b, 420a, 420b. At least one protrusion 302a, 302b, 402a, 402b of the first plurality of protrusions can define a protrusion aperture 304a, 304b, 404a, 404b, and at least one protrusion 302a, 302b, 402a, 402b of the second plurality of protrusions can define a protrusion aperture 304a, 304b, 404a, 404b.

[0039] At least one protrusion 302a, 302b, 402a, 402b of the first plurality of protrusions extends laterally from the first side surface 318a, 318b, 418a, 418b to a first free end 322a, 322b, 422a, 422b. As Figure 7 As best seen in

[0040] As best seen in Figure 6 and 8 As best seen in

[0041] Additionally, at least one protrusion 302b, 402b of the first plurality of protrusions can be disposed proximate the first axial end 308a, 308b, 408a, 408b, extend laterally from the first side surface 318a, 318b, 418a, 418b to the first free end 322b, 422b, and include a first tapered surface 324a extending from the first side surface 318a, 318b, 418a, 418b to the first free end 322b, 422b forming an oblique angle 326 with the lateral axis 316a, 316b. In this case, the protrusion aperture 304b, 404b can have a semi-U-shaped configuration open at the first free end 322a, 322b, and at least one protrusion of the second plurality of protrusions is a solid protrusion 328 (i.e., without an aperture) disposed proximate the second axial end 312a, 312b, 412a, 412b of the wear plate 300a, 300b, 400a, 400b.

[0042] Next, reference will now be made to Figures 5 to 9 discuss a wear plate according to another embodiment of the present disclosure that can be provided as a replacement component.

[0043] As Figure 9 shown in FIG. 4A, 4B, such a wear plate 400a, 400b can include a first axial end 408a, 408b having a first oblique flat surface 430a, 430b relative to the lateral axis 416a, 416b forming an acute angle 432 with the lateral axis. Further, as shown in FIG. 4A, 4B, the second axial end 412a, 412b can include a curved portion 414a, 414b defining a radius of curvature 315 in a plane perpendicular to the lateral axis 316a, 316b, 416a, 416b (i.e., the plane of Figure 8 Figure 5 Figure 5 In some embodiments, the acute angle 432 can be in the range of 5.0 degrees to 15.0 degrees, and the radius of curvature 315 can be in the range of 80.0 mm to 145.0 mm.

[0044] Also as mentioned herein before and as shown in FIG. 4A, 4B, the wear plate 400a, 400b can include a first plurality of protrusions 402a, 402b disposed proximate the first axial end 408a, 408b, extending laterally from the first side surface 418a, 418b to the first free end 422a, 422b, and including a first tapered surface 424a extending from the first side surface 418a, 418b to the first free end 422a, 422b forming an oblique angle 426 with the lateral axis 416a, 416b. Figure 7 ​​As shown in FIG. 3, at least one of the protrusions can include a first tapered surface 324a extending from the first side surface 318a to the first free end 322a, and a second tapered surface 324b extending from the first side surface 318a to the first free end 322a. As a result, the first tapered surface 324a and the second tapered surface 324b can form an oblique included angle 330 with each other. This can not be the case for other embodiments of the present disclosure. It will be appreciated that many or most of the protrusions of the various wear plates 300a, 300b, 400a, 400b can have similar or identical configurations to each other, including their apertures. Similar statements can be made for the solid protrusions 328, 428. Again, this can not be the case for other embodiments of the present disclosure.

[0045] Also as mentioned herein before and as Figure 9 As shown in FIG. 4, at least one of the protrusions 402b of the first plurality of protrusions is disposed proximate to the first axial end 408a, 408b, and has a protrusion aperture having an open half-U-shaped configuration, and a first tapered surface 324a (see FIG. 3) forming an obtuse angle with a free end (422b, see FIG. 4). Also, at least one of the protrusions of the second plurality of protrusions can be a solid protrusion 428 (i.e., without an aperture) disposed proximate to the second axial end 412a, 412b of the wear plate 400a, 400b. Figure 9 Figure 7

[0046] It should be noted that the details of the wear plates, and their configurations, assemblies, methods of assembly, etc., are provided by way of example only, and it is contemplated that other embodiments of the present disclosure are possible.

[0047] For example, the arrangement, function, and dimensions of the various features of any embodiment of a wear plate as discussed herein can be changed from what is specifically mentioned herein as desired or

[0048] Industrial applicability

[0049] Indeed, a wear plate, a set of wear plates, a feeder protection system, or a machine using any of these components according to any embodiment described herein can be sold, purchased, manufactured, or otherwise obtained in an OEM (original equipment manufacturer) or aftermarket environment.

[0050] Any portion of a wear plate can be made from a rigid material such as stainless steel, tool steel, aluminum, etc., and can be formed using bending and / or forming operations (e.g., by a press brake, a punch press, a progressive die, etc.). Alternatively, or in addition to these operations, the periphery of a wear plate can be manufactured using laser cutting, water jet cutting, etc.

[0051] ​​Various embodiments of the machine and its components can be characterized as "hardware-less" designs in that there is no dedicated hardware to directly mount / secure the plates in place on the machine. Rather, these wear plates "indirectly" utilize mounting hardware and placement slots in the machine frame that are intended to be bolted to other surrounding machine components.

[0052] With this design, there is no "top-down" mounting hardware that is exposed to asphalt. Thus, various embodiments of the present disclosure can simplify and speed up the removal of these wear plates. Previous designs used top-down direct mounting of flat head bolts that secured the bed plates in place. These bolts contained a recessed hex pattern for a wrench to engage, which required the asphalt to be cleaned away before these bolts could be removed, which added a significant amount of wear plate changeover time.

[0053] The wear plates can contain multiple raised / protruding portions that interface with slots in the machine frame, such as the side plates, to properly position the wear plates in all directions (lateral axis - LH / RH, Y - vertically, and longitudinal axis - front / back) and secure the wear plates to the machine. To ease installation of the wear plates, these raised portions contain additional features in the form of a tapered shape. This tapered raised shape can allow for fine-tuned adjustment of the plate position to adjust the plate position and accommodate the superimposition of part shape / profile tolerances. This can help ensure that the plates fit multiple machines. The tapered raised shape and interface with the machine frame side plate slots are illustrated in Figure 3 .

[0054] These same tapered raised portions can be "clipped" or "trapped" in the bolt joints with the center chain shroud, thereby flatly and directly securing the wear plates to the paver frame bed plate. The tapered raised portions contain open slots that allow the installation bolts of the center chain shroud to pass through. As a result, the raised portions end up being part of the chain shroud bolt joints. This is illustrated in Figure 4 .

[0055] The wear plates contain a specific symmetrical shape with specific tapered raised portion locations to allow for a common part number to be used in both front and back positions. This arrangement can minimize the number of different wear plate part numbers needed for each machine. For example, the left front plate is also used in the right back position, and the right front plate is also used in the left back position. The specific tapered raised portion locations are illustrated in Figure 8 .

[0056] The wear plate can contain selectively chosen mounting boss locations on the corners of the plate. This can ensure that the ends or corners of the plate are fixed completely "flat" to the frame, thus enabling a smooth / horizontal / in-plane transition from front wear plate to rear wear plate (as they are almost perfectly vertically aligned). This can help ensure that the conveyor drag chain feeder bar does not "hook" on the plate-to-plate joint, thus maximizing the service life of the feeder bar as the wear at this joint has been minimized. This can also reduce the noise generated by the feeder bar as it crosses this joint.

[0057] These wear plates also contain another feature at the plate-to-plate joint to help provide a smooth / quiet feeder bar transition across this joint. This feature consists of a front plate and a rear plate, both having angled edges that create a joint at this joint location that is intentionally not perpendicular (82.5 degrees) to the material flow / feeder chain rotational direction. In the case where the front plate and rear plate are not vertically aligned (if this joint were 100% perpendicular to the material flow / feeder chain direction, leaving an exposed edge of the feeder bar that hooks / damages the passing feeder bar), then a "hooking" edge can occur. This angled joint can minimize the length of this exposed "hooking" edge that the feeder bar needs to cross over in order to move from the front plate to the rear plate. Thus, it can act as a local lead-in transition at this plate-to-plate joint. The angled joint is best shown in Figure 9 .

[0058] Also, specifically at this plate-to-plate joint location, each front and rear bed plate contains a 1 / 2 tapered mounting boss on the extreme corners of the plate (and a bolt passes through the slot discussed above). This is the optimal boss location to help ensure that the two plates are fixed vertically in the same plane at this joint. Again, this is another measure to enable the feeder bar to move smoothly (with little noise or wear) across this front-to-rear plate joint. This concept is shown, for example, in Figure 9 .

[0059] The wear plates also have a specific custom end bend profile / shape that minimizes the friction / wear of the feeder bar against these wear plates as the chain rotates around the end drive sprocket. The feeder bar can be prone to "digging into" the bed plate due to the chain dynamics as it passes through the sprocket diameter. Thus, this specific bend profile can minimize this interference. This can be seen, for example, in Figure 5 .

[0060] It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of devices and assembly methods discussed herein without departing from the scope or spirit of the application. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of various embodiments disclosed herein. For example, some devices can be constructed and function differently than described herein, and certain steps of any method can be omitted, performed in a different order than specifically mentioned, or in some cases simultaneously or in sub-steps. Further, certain aspects or features of various embodiments can be changed or modified to produce additional embodiments, and features and aspects of various embodiments can supplement or substitute for other features or aspects of other embodiments in order to provide additional embodiments.

[0061] Accordingly, the specification and examples are to be considered exemplary and illustrative only, with the true scope and spirit of the application being indicated by the following claims and their equivalents.

Claims

1. A wear-resistant plate, comprising: The main body defines a longitudinal axis and a transverse axis perpendicular to the longitudinal axis; A first axial end, a second axial end, a first side surface extending from the first axial end to the second axial end, and a second side surface extending from the first axial end to the second axial end; A plurality of protrusions are provided on the first side surface; as well as A second plurality of protrusions are provided on the second side surface; At least one of the first plurality of protrusions defines a protruding hole, and at least one of the second plurality of protrusions defines a protruding hole. At least one of the first plurality of protrusions extends laterally from the first side surface to the first free end, and includes a first tapered surface extending from the first side surface to the first free end and a second tapered surface extending from the first side surface to the first free end, wherein the first tapered surface and the second tapered surface form an angle of inclination with the lateral axis.

2. The wear-resistant plate according to claim 1, wherein the protruding hole has a U-shaped structure that is open at the first free end.

3. The wear-resistant plate according to claim 1, wherein the first plurality of protrusions are axially staggered relative to the second plurality of protrusions.

4. The wear-resistant plate according to claim 1, wherein at least one of the first plurality of protrusions is disposed near the first axial end, extends laterally from the first side surface to the first free end, and includes a first tapered surface extending from the first side surface to the first free end, forming an angle with the lateral axis, the protrusion hole having a semi-U-shaped structure open at the first free end, and at least one of the second plurality of protrusions is a solid protrusion disposed near the second axial end of the wear-resistant plate.

5. A wear-resistant plate, comprising: The main body defines a longitudinal axis and a transverse axis perpendicular to the longitudinal axis; A first axial end, a second axial end, a first side surface extending from the first axial end to the second axial end, and a second side surface extending from the first axial end to the second axial end; A plurality of protrusions are provided on the first side surface; as well as A second plurality of protrusions are provided on the second side surface; The first axial end includes a first inclined flat surface relative to the transverse axis, the first inclined flat surface forming an acute angle with the transverse axis, and the second axial end includes a curved portion defining a radius of curvature in a plane perpendicular to the transverse axis. The acute angle is in the range of 5.0 degrees to 15.0 degrees, and the radius of curvature is in the range of 80.0 mm to 145.0 mm.

6. The wear-resistant plate according to claim 5, wherein at least one of the first plurality of protrusions defines a protrusion hole, and at least one of the second plurality of protrusions defines a protrusion hole.

7. The wear-resistant plate according to claim 6, wherein at least one of the first plurality of protrusions extends laterally from the first side surface to the first free end, and includes a first tapered surface extending from the first side surface to the first free end and a second tapered surface extending from the first side surface to the first free end, wherein the first tapered surface and the second tapered surface form an inclined angle with each other.

8. The wear-resistant plate according to claim 6, wherein at least one of the first plurality of protrusions is disposed near the first axial end, extends laterally from the first side surface to the first free end, and includes a first tapered surface extending from the first side surface to the first free end, forming an obtuse angle with the free end, the protrusion hole having a semi-U-shaped structure open at the first free end, and at least one of the second plurality of protrusions is a solid protrusion disposed near the second axial end of the wear-resistant plate.

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