Easily-maintained wear-resistant device for blanking chute of sintering adhesive tape machine

Abstract

The invention relates to the technical field of wear resistance of metallurgical equipment, and provides an easy-to-maintain wear-resistant device for a blanking chute of a sintering adhesive tape machine, which comprises a chute body, and guard plates are arranged on two sides of a material impact surface of the chute body; the plurality of steel bars are arranged on the material impact surface of the chute body in parallel at intervals and are used for bearing direct impact and abrasion of materials; the U-shaped clamping groove is fixedly formed in the material impact surface of the chute body, an opening of the U-shaped clamping groove faces upwards, and a rod body of the steel bar is embedded in the U-shaped clamping groove so as to achieve rapid positioning and supporting of the steel bar; the fastening nut is in threaded connection with the end part of the steel bar, and the steel bar is axially pressed and fixed between the guard plates of the chute body by screwing the fastening nut; wherein the steel bars, the U-shaped clamping grooves and the fastening nuts form independent wear-resistant modules, and the wear-resistant modules can be detached and replaced independently. The problems that in the prior art, a discharging chute is poor in abrasion resistance and inconvenient to maintain are solved.

Description

Technical Field

[0001] This application relates to the field of wear-resistant technology for metallurgical equipment, and more specifically, to a wear-resistant device for an easy-to-maintain sintering conveyor belt feed chute. Background Technology

[0002] Currently, in the metallurgical sintering production process, the feeding chute of the sintering conveyor belt is a key equipment component that withstands the continuous impact of high-temperature, highly abrasive materials. Traditional chutes are mostly made of ordinary steel plates or lined with integral wear-resistant plates, which have limited wear resistance and short service life. More importantly, when the chute is locally worn, especially when the material impact surface is worn through, existing technologies usually require replacing the entire liner or even the entire chute section. Such maintenance operations are cumbersome, time-consuming, and require interrupting the operation of the sintering production line, seriously affecting production continuity and leading to high maintenance costs and capacity losses. In addition, some repair methods using welded wear-resistant layers not only require hot work, posing safety risks, but also have unstable repair quality and are difficult to achieve precise local maintenance. Therefore, existing technologies have long faced the challenge of not being able to simultaneously achieve wear resistance and ease of maintenance for feeding chutes. There is an urgent need for a wear-resistant device that can achieve rapid local replacement, significantly extend service life, and has low maintenance costs to ensure the high efficiency and stability of sintering production. Summary of the Invention

[0003] This application aims to at least address the technical problem that existing technical solutions typically require the replacement of the entire liner plate or even the chute section, resulting in cumbersome and time-consuming maintenance operations, interruption of the sintering production line, serious impact on production continuity, and high maintenance costs and capacity loss.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows: This application provides an easy-to-maintain wear-resistant device for a sintering conveyor belt feed chute, comprising: a chute body with vertical guard plates on both sides of the material impact surface; multiple steel bars arranged parallel and spaced apart on the material impact surface of the chute body to withstand direct impact and wear from the material; a U-shaped groove fixedly mounted on the material impact surface of the chute body with its opening facing upward, the steel bars being embedded in the U-shaped groove for quick positioning and support; and a fastening nut threadedly connected to the end of the steel bar, which axially presses and fixes the steel bar between the guard plates of the chute body by tightening the fastening nut; wherein the steel bars, U-shaped groove, and fastening nut constitute an independent wear-resistant module that can be disassembled and replaced individually.

[0005] This application provides an easy-to-maintain wear-resistant device for the feeding chute of a sintering conveyor belt machine. Through the design of modular wear-resistant units and a quick-assembly / disassembly structure, it achieves simultaneous improvement in wear resistance and maintenance efficiency. In wear protection scenarios, the device uses multiple independent high-wear-resistant alloy steel bars arranged in a parallel array on the material impact surface of the chute body, directly bearing the impact and wear of the material. Compared to traditional integral liners, it transforms surface wear into line wear, resulting in higher wear resistance per unit area, and the wear of a single bar does not lead to overall failure. In quick positioning and support scenarios, a U-shaped groove welded to the bottom of the chute provides precise embedding and full-line support for the steel bars. The groove width of the U-shaped groove is precisely matched to the diameter of the steel bar, ensuring both quick embedding and stability under impact, effectively distributing the force. In quick assembly / disassembly and maintenance scenarios, the fastening mechanism is achieved through optimized design: one end of the steel bar is set as a stepped shaft structure, and the other end is machined with external threads. During installation, the stepped shaft end is secured to the outside of the first guard plate, while the threaded end passes through the second guard plate and is locked to its outside by a fastening nut. This structure allows maintenance personnel to easily remove and replace any worn steel bar by loosening the fastening nut on one side. The entire process requires no open flame, no large tools, and no disassembly of the chute's main structure, enabling precise local maintenance within minutes and significantly reducing downtime. For structural stability and anti-loosening scenarios, the device also incorporates anti-loosening washers to ensure the fastening nuts do not loosen under long-term equipment vibration, guaranteeing the long-term operational reliability of the modular structure under high-speed material impact. This device fundamentally solves the problems of poor wear resistance and inconvenient maintenance in existing material discharge chutes.

[0006] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0007] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the wear-resistant device for an easy-to-maintain sintering conveyor belt feeding chute according to an embodiment of this application. Figure 2 for Figure 1 A schematic diagram of the AA cross-sectional structure of the wear-resistant device for the easy-to-maintain sintering conveyor belt machine feeding chute in the embodiment shown. Figure 3 for Figure 1 A schematic diagram of the structure of the first protective plate in the wear-resistant device of the easy-to-maintain sintering conveyor belt feeding chute of the embodiment shown; Figure 4 for Figure 1 A schematic diagram of the structure of the second guard plate in the wear-resistant device of the easy-to-maintain sintering conveyor belt feeding chute in the embodiment shown; Figure 5 for Figure 1 A schematic diagram of the steel bar structure in the wear-resistant device of the easy-to-maintain sintering conveyor belt feeding chute in the embodiment shown.

[0008] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100 Easy-maintain sintering conveyor belt feeding chute wear-resistant device, 110 Chute body, 120 Guard plate, 122 First guard plate, 124 Second guard plate, 126 First through hole, 128 Second through hole, 130 Steel bar, 132 Stepped shaft structure, 134 External thread structure, 140 U-shaped groove, 150 Fastening nut, 160 Anti-loosening washer. Detailed Implementation

[0009] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0010] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0011] The following reference Figures 1 to 5 This application describes a wear-resistant device 100 for an easy-to-maintain sintering conveyor belt feed chute, which is applied to the feed chute of a sintering conveyor belt in metallurgical sintering production.

[0012] like Figures 1 to 5 As shown in one embodiment of this application, an easy-to-maintain wear-resistant device 100 for a sintering conveyor belt feeding chute includes: a chute body 110, with vertical guard plates 120 on both sides of the material impact surface of the chute body 110; multiple steel bars 130, which are arranged parallel and spaced apart on the material impact surface of the chute body 110 to withstand the direct impact and wear of the material; and a U-shaped groove 140, which is fixedly disposed on the material impact surface of the chute body 110. The opening of 140 faces upward, and the body of the steel bar 130 is embedded in the U-shaped slot 140 to achieve quick positioning and support of the steel bar 130; the fastening nut 150 is threaded to the end of the steel bar 130, and the steel bar 130 is axially pressed and fixed between the guard plates 120 of the chute body 110 by tightening the fastening nut 150; wherein, the steel bar 130, the U-shaped slot 140 and the fastening nut 150 constitute an independent wear-resistant module, which can be disassembled and replaced individually.

[0013] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the wear-resistant device 100 for the easy-to-maintain sintering conveyor belt feeding chute provided in this application includes a chute body 110, multiple steel bars 130, a U-shaped groove 140, and a fastening nut 150. Vertical guard plates 120 are provided on both sides of the material impact surface of the chute body 110. Multiple steel bars 130 are arranged parallel and spaced apart on the material impact surface of the chute body 110 to withstand direct impact and wear from the material. The U-shaped groove 140 is fixedly installed on the material impact surface of the chute body 110, with its opening facing upwards. The steel bars 130 are embedded in the U-shaped groove 140 to achieve quick positioning and support. The fastening nut 150 is threaded to the end of the steel bars 130, and by tightening the fastening nut 150, the steel bars 130 are axially pressed and fixed between the guard plates 120 of the chute body 110. Among them, the steel bar 130, the U-shaped groove 140 and the fastening nut 150 constitute an independent wear-resistant module, which can be disassembled and replaced individually.

[0014] In this way, by designing the traditional integral wear-resistant liner as a modular wear-resistant unit composed of independent steel bars 130, U-shaped grooves 140, and fastening nuts 150, the unitization and independent replaceability of the wear-resistant structure are achieved. The technical principle is as follows: the U-shaped groove 140 provides precise radial positioning and continuous support for the steel bars 130, limiting their radial displacement; while the stepped shaft structure 132 at one end of the steel bar 130 and the threaded fastening nut 150 at the other end together constitute a reliable axial constraint, stably pressing it between the two side guard plates 120. This design allows any steel bar 130 to be removed and replaced simply by loosening the corresponding fastening nut 150 after wear, without needing to handle other parts or use welding equipment. Its direct technical effect is a significant improvement in the convenience and accuracy of maintenance operations, greatly reducing equipment downtime. At the same time, by using highly wear-resistant steel bars 130 and optimizing their stress support, the overall wear resistance and operational reliability of the device are guaranteed.

[0015] Compared with existing technologies, the wear-resistant device 100 for the easy-to-maintain sintering conveyor belt feeding chute provided in this application has the following advantages: First, excellent wear resistance: the steel bars 130 are made of high wear-resistant alloy steel, which significantly improves the wear life compared with traditional liners; Second, extremely convenient maintenance: each steel bar 130 can be replaced independently. When individual steel bars 130 wear to their limit, there is no need to disassemble the entire chute. Simply loosen the corresponding fastening nut 150 to quickly replace the worn steel bar 130, greatly shortening maintenance time and reducing maintenance costs; Third, strong adaptability: the diameter, spacing, and other parameters of the steel bars 130 can be adjusted according to different material working conditions to meet various sintering production needs; Fourth, stable structure: the U-shaped slot 140 positioning and the fastening nut 150 connection method ensure that the steel bars 130 do not loosen or move under material impact, ensuring long-term stable operation of the device, while not affecting the quick disassembly and replacement of the steel bars 130.

[0016] Specifically, in metallurgical sintering production, the feeding chute of the sintering conveyor belt is a key component for material conveying. The impact and wear on the chute during material descent are severe. Traditional chutes often use ordinary steel plates or wear-resistant liners, which not only lack sufficient wear resistance and have a short service life, but also often require complete disassembly and reassembly for maintenance. This cumbersome and time-consuming process severely impacts the continuity and efficiency of sintering production and significantly increases equipment maintenance costs. Therefore, there is an urgent need for a wear-resistant feeding chute device with excellent wear resistance and convenient maintenance.

[0017] To address the shortcomings of existing technologies, this application aims to provide an easy-to-maintain wear-resistant device 100 for the feeding chute of a sintering conveyor belt machine, thereby solving the problems of poor wear resistance and inconvenient maintenance of the feeding chute in the prior art.

[0018] Specifically, such as Figure 1 and Figure 2 As shown, the wear-resistant device 100 for the easy-to-maintain sintering conveyor belt feeding chute includes a chute body 110, steel bars 130, a U-shaped groove 140, and a fastening nut 150. The chute body 110 serves as the main structure and is used to receive materials. The steel bars 130 are made of high wear-resistant alloy steel and are installed on the material impact surface of the chute body 110, directly bearing the wear of the materials. Each steel bar 130 can be independently disassembled and replaced. The U-shaped groove 140 is used to quickly position the steel bars 130, ensuring their neat arrangement and facilitating quick insertion. The fastening nut 150 is used to quickly and securely connect the steel bars 130 to the U-shaped groove 140 and the chute body 110, while also facilitating quick disassembly for replacement of the steel bars 130. Specifically, the diameter and spacing of the steel bars 130 can be adjusted according to working parameters such as material particle size and impact strength to maximize wear resistance while ensuring smooth material passage. The U-shaped groove 140 is welded and fixed to the chute body 110 to ensure connection strength. Its groove width is precisely matched to the diameter of the steel bars 130, ensuring quick and accurate positioning of the steel bars 130. The fastening nut 150 adopts a design for easy and quick disassembly, effectively preventing loosening under long-term vibration and impact, and allowing for quick loosening when the steel bars 130 need to be replaced.

[0019] Thus, the easy-to-maintain wear-resistant device 100 for the sintering conveyor belt unloading chute provided in this application achieves simultaneous improvement in wear resistance and maintenance efficiency through the design of modular wear-resistant units and quick-disassembly structure. In wear protection scenarios, the device uses multiple independent high-wear-resistant alloy steel bars 130 arranged in a parallel array on the material impact surface of the chute body 110 to directly bear the impact and wear of the material. Compared with traditional integral liners, it transforms surface wear into line wear, resulting in higher wear resistance per unit area, and the wear of a single bar will not lead to overall failure. In rapid positioning and support scenarios, the U-shaped groove 140 welded to the bottom of the chute provides precise embedding positioning and full-line support for the steel bars 130. The groove width of the U-shaped groove 140 is precisely matched with the diameter of the steel bar 130, ensuring that it can be quickly embedded and positioned while remaining stable under impact, effectively distributing the force. In scenarios requiring rapid assembly, disassembly, and maintenance, the fastening mechanism is optimized through a unique design: one end of the steel bar 130 is configured as a stepped shaft structure 132, while the other end is machined with external threads. During installation, the stepped shaft end is secured to the outside of the first guard plate 122, while the threaded end passes through the second guard plate 124 and is locked to its outside by a fastening nut 150. This structure allows maintenance personnel to easily remove and replace any worn steel bar 130 by loosening the fastening nut 150 on one side. The entire process requires no open flame, no large tools, and no disassembly of the chute's main structure, enabling precise localized maintenance within minutes and significantly reducing downtime. For structural stability and anti-loosening scenarios, the device also incorporates anti-loosening washers 160 to ensure that the fastening nut 150 will not loosen under long-term equipment vibration, guaranteeing the long-term operational reliability of the modular structure under high-speed material impact. This device fundamentally solves the problems of poor wear resistance and inconvenient maintenance in existing material discharge chutes.

[0020] In some embodiments, optionally, such as Figure 1 As shown, the U-shaped groove 140 is fixedly connected to the chute body 110 by welding, and the groove width of the U-shaped groove 140 is adapted to the diameter of the steel bar 130. The gap between the groove width of the U-shaped groove 140 and the diameter of the steel bar 130 is no more than 1mm.

[0021] Specifically, such as Figure 1As shown, the U-shaped groove 140 and the chute body 110 are permanently fixedly connected by welding, ensuring the rigidity and stability of the support structure. Simultaneously, the groove width of the U-shaped groove 140 and the diameter of the steel bar 130 are precisely matched, controlling the assembly gap between them to no more than 1mm. This welding connection ensures the connection strength of the U-shaped groove 140 under continuous impact and vibration conditions, preventing loosening. The gap control allows the steel bar 130 to be easily inserted for quick positioning, while also maximally limiting the radial sway and circumferential deflection of the steel bar 130 within the groove. The direct technical effect of this design is that it achieves rapid and accurate installation of the steel bar 130, while ensuring that it maintains its preset arrangement and positional stability when subjected to material impact, thereby guaranteeing the protective effect of the overall wear-resistant layer and its long-term reliability.

[0022] In some embodiments, optionally, such as Figure 1 As shown, there are multiple U-shaped slots 140, which are spaced apart along the axial direction of the steel bar 130, and the multiple U-shaped slots 140 together support the middle section of the steel bar 130.

[0023] Specifically, such as Figure 1 As shown, multiple U-shaped slots 140 are spaced apart along the axial direction of the steel bar 130, forming multiple evenly distributed support points along the length of the steel bar 130. By setting multiple spaced support points, the long-span simply supported beam structure of the steel bar 130 is transformed into a multi-span continuous beam stress mode, significantly reducing the bending deflection and vibration amplitude of the steel bar 130 when subjected to material impact. Simultaneously, the impact load is more evenly transmitted to the chute body 110 through the multiple U-shaped slots 140. This arrangement greatly enhances the impact deformation resistance of the steel bar 130, effectively preventing early failure or stress concentration at the fixed end due to excessive bending in the middle, improving the overall structural stability and the service life of the wear-resistant module. Furthermore, this spaced arrangement achieves rational material utilization and structural lightweighting while ensuring support effectiveness.

[0024] In some embodiments, optionally, such as Figure 2 As shown, a U-shaped slot 140 is welded to the bottom panel of the chute body 110, and the bottom of the U-shaped slot 140 is fully welded to the bottom panel of the chute body 110.

[0025] Specifically, such as Figure 2As shown, the bottom of the U-shaped slot 140 and the bottom panel of the chute body 110 are connected by full welding, that is, continuous and complete welding is performed along the contact contour between the bottom of the U-shaped slot 140 and the chute panel. The full welding connection forms a continuous weld penetration and weld leg, enabling complete metal fusion between the U-shaped slot 140 and the chute body 110. This allows the impact load to be uniformly and continuously transferred to the main structure of the chute through the complete weld interface, avoiding localized stress concentration that may be caused by spot welding or intermittent welding. This greatly enhances the load-bearing capacity and fatigue strength of the connection, effectively preventing the risk of weld cracking or slot loosening under long-term high-intensity material impact, ensuring the robustness and long-term reliability of the wear-resistant module support foundation, and providing a stable structural guarantee for rapid replacement and maintenance.

[0026] In some embodiments, optionally, such as Figure 1 As shown, multiple steel bars 130 are arranged in an array on the material impact surface of the chute body 110, and the spacing between two adjacent steel bars 130 ranges from 10mm to 50mm.

[0027] Specifically, such as Figure 1 As shown, multiple steel bars 130 are arranged regularly on the material impact surface of the chute body 110 according to a preset row and column spacing, forming a complete array-type wear-resistant protective layer. The spacing between the center lines of adjacent steel bars 130 is controlled within the range of 10mm to 50mm. This spacing range has been precisely calculated to ensure effective interception of sintered materials of different particle sizes, preventing small particles from directly impacting the chute bottom plate, while also reserving sufficient passage space for the downward flow of materials to prevent material accumulation or blockage due to poor discharge. In this way, a controlled material flow channel is formed between the steel bars 130, maximizing the protective area of ​​the high wear-resistant steel bars 130 while ensuring smooth material passage. This significantly improves the overall wear resistance and impact resistance of the chute, while ensuring the material feeding efficiency and continuous stable operation of the sintering production line.

[0028] In some embodiments, optionally, such as Figure 1 and Figure 5 As shown, the steel bar 130 is made of high wear-resistant alloy steel, and the diameter of the steel bar 130 ranges from 20mm to 50mm.

[0029] Specifically, such as Figure 1 and Figure 5As shown, the steel bar 130 is made of high wear-resistant alloy steel, and its diameter is limited to a preferred range of 20mm to 50mm. Through its unique alloy composition and heat treatment process, the high wear-resistant alloy steel forms a high-hardness, high-toughness metallographic structure on the surface of the steel bar 130, effectively resisting continuous cutting wear and impact fatigue from the sintered material. The diameter range of 20mm to 50mm comprehensively considers the balance between wear-resistant volume, bending strength, and economy, ensuring that each steel bar 130 has sufficient load-bearing cross-section to resist impact deformation and fracture, while avoiding excessive material costs and structural bulkiness due to excessively large diameters. This significantly improves the wear life and impact resistance reliability of each steel bar 130, enabling the entire wear-resistant device to maintain long-term stable operation under harsh sintering conditions. At the same time, the reasonable diameter specification facilitates on-site replacement operations and controls the cost of maintenance spare parts.

[0030] In some embodiments, optionally, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the vertical guard plates 120 on both sides of the chute body 110 include: a first guard plate 122, on which a plurality of first through holes 126 are provided; and a second guard plate 124, on which a plurality of second through holes 128 are provided, and the plurality of first through holes 126 and the plurality of second through holes 128 are arranged in a one-to-one correspondence; wherein, the diameter of the first through hole 126 is larger than the diameter of the steel bar 130, and the diameter of the second through hole 128 is smaller than the diameter of the steel bar 130.

[0031] Specifically, such as Figure 3 and Figure 4As shown, the side guard plates 120 of the chute body 110 adopt a differentiated aperture design. The diameter of the first through hole 126 on the first guard plate 122 is larger than the diameter of the steel bar 130, forming an assembly guide channel; the diameter of the second through hole 128 on the second guard plate 124 is smaller than the diameter of the steel bar 130, forming an axial limiting structure. In this way, through the aperture difference of the two side guard plates 120 and the special structure at both ends of the steel bar 130, the large aperture of the first guard plate 122 provides an unobstructed insertion path for the external thread end of the steel bar 130, while the small aperture of the second guard plate 124 forms a clearance fit with the external thread end of the steel bar 130. When the fastening nut 150 is tightened, the steel bar 130 is axially tightened, so that the stepped shaft end is tightly attached to the outside of the first guard plate 122, and the threaded end is pressed against the outside of the second guard plate 124 by the nut, forming a stable bidirectional pressing and fixing. This enables rapid centering and precise axial positioning of the steel bar 130, ensuring accurate hole alignment without the need for specialized positioning tools during assembly. Furthermore, the bidirectional clamping method effectively eliminates the risk of axial movement of the steel bar 130 under impact loads, significantly improving the assembly efficiency and operational stability of the modular wear-resistant structure.

[0032] In some embodiments, optionally, such as Figure 5 As shown, one end of the steel bar 130 is configured as a stepped shaft structure 132, and the other end is configured with an external thread structure 134. The external thread end of the steel bar 130 passes through the first through hole 126 of the first guard plate 122 and the second through hole 128 of the second guard plate 124 in sequence, so that one end of the external thread structure 134 is exposed on the outside of the second guard plate 124 and locked to the outside of the second guard plate 124 by a fastening nut 150. One end of the stepped shaft structure 132 is stuck on the outside of the first guard plate 122.

[0033] Specifically, such as Figure 5 As shown, the steel bar 130 adopts an asymmetrical end structure design, with one end machined into a stepped shaft structure 132 and the other end machined with an external thread structure 134. During installation, the threaded end first passes through the through hole of the first guard plate 122 with a larger diameter until the shoulder of the stepped shaft abuts against the outside of the first guard plate 122 to form an axial limit; then the steel bar 130 continues to pass through, with its threaded end passing through the through hole of the second guard plate 124 with a smaller diameter, and finally, the steel bar 130 is pressed and fixed to the outside of the second guard plate 124 by tightening the fastening nut 150. In this way, the two-way mechanical limit formed by the stepped shaft and the threaded end and the nut firmly restrains the steel bar 130 between the two guard plates 120, which not only achieves quick positioning and installation, but also ensures that no axial movement will occur when subjected to material impact; at the same time, the locking structure of the stepped shaft end allows the steel bar 130 to be pulled out by simply loosening the nut on one side, which greatly simplifies the maintenance process and provides a structural basis for the rapid replacement of the wear-resistant strip.

[0034] In some embodiments, optionally, such as Figure 1 As shown, the fastening nut 150 is a crown nut or wing nut that is easy to disassemble and assemble. After tightening, it can ensure that the steel bar 130 does not move axially under the impact of materials.

[0035] Specifically, such as Figure 1 As shown, the fastening nut 150 uses a crown nut or wing nut as the standard fastener, which is easy to install and remove manually. The slot at the top of the crown nut allows for the insertion of a cotter pin to achieve mechanical anti-loosening, while the wing-shaped structure on both sides of the wing nut provides sufficient torque for hand tightening. When the nut is tightened, the axial preload generated by the nut, the threaded end of the steel bar 130, and the surface of the guard plate 120, together with the mechanical limit formed by the stepped shaft end on the other side of the guard plate 120, constitute a two-way constraint, thereby completely restricting the axial degree of freedom of the steel bar 130. In this way, while ensuring reliable fastening and effectively preventing the nut from loosening due to equipment vibration, maintenance personnel can quickly complete the disassembly and assembly operation by hand or simple manual tools when replacing a single steel bar 130 without the need for electric or special wrenches, greatly improving the convenience and efficiency of maintenance work.

[0036] In some embodiments, optionally, such as Figure 1 As shown, an anti-loosening washer 160 is also provided between the steel bar 130 and the fastening nut 150 to prevent the fastening nut 150 from loosening under vibration conditions.

[0037] Specifically, such as Figure 1 As shown, an anti-loosening washer 160 is provided at the contact interface between the threaded end of the steel bar 130 and the fastening nut 150. This anti-loosening washer 160, through its unique elastic deformation or mechanical locking characteristics, continuously applies a preload force in the opposite direction to the loosening direction after the nut is tightened, or through mechanical interference between its non-circular locking teeth and the connecting parts, effectively counteracting the impact of continuous vibration caused by material impact on the threaded pair during equipment operation, thereby disrupting the mechanical conditions for self-loosening of the threaded pair. This significantly improves the anti-loosening performance and long-term operational reliability of the threaded connection pair, fundamentally preventing the gradual loosening of the fastening nut 150 under long-term vibration conditions, ensuring the long-term stability of the axial clamping force of the steel bar 130, and thus guaranteeing the long-term operational safety and maintenance cycle of the entire modular wear-resistant device under the harsh conditions of the sintering production line.

[0038] In practical applications, the replacement method for the steel bar 130 in the wear-resistant device 100 of the easy-to-maintain sintering conveyor belt feeding chute is as follows: First, determine the diameter of the steel bar 130 according to the size of the sintering conveyor belt feeding chute and the material working conditions. For example, select a high wear-resistant alloy steel bar with a diameter of 30mm and an arrangement spacing of 20mm. Then, weld and fix the U-shaped groove 140 to the material impact surface of the chute body 110. The groove width of the U-shaped groove 140 is adapted to the diameter of the steel bar 130 to facilitate the quick insertion of the steel bar 130. Next, quickly insert the steel bar 130 into the U-shaped groove 140. After adjusting the position, quickly tighten and fix the end of the steel bar 130 with the fastening nut 150. Finally, conduct an overall inspection of the device to ensure that the steel bars 130 are not loose and are arranged neatly.

[0039] During use, materials impact the steel bars 130, which bear the main wear. When a steel bar 130 wears to a certain extent, the operator can quickly loosen the corresponding fastening nut 150, remove the worn steel bar 130, insert a new steel bar 130, and tighten the fastening nut 150 to complete the replacement. The whole process is fast and efficient, greatly improving the convenience of maintenance.

[0040] In the description of this application, the term "multiple" refers to two or more. Unless otherwise expressly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wear-resistant device for an easy-to-maintain sintering conveyor belt feed chute, characterized in that, include: The chute body has vertical guard plates on both sides of the material impact surface. Multiple steel bars are arranged parallel and spaced apart on the material impact surface of the chute body to withstand the direct impact and wear of the material. The U-shaped groove is fixedly installed on the material impact surface of the chute body, and the opening of the U-shaped groove faces upward. The steel bar is embedded in the U-shaped groove to achieve rapid positioning and support of the steel bar. A fastening nut is threaded to the end of the steel bar, and the steel bar is axially pressed and fixed between the guard plates of the chute body by tightening the fastening nut; The steel bar, the U-shaped groove, and the fastening nut constitute an independent wear-resistant module that can be disassembled and replaced individually.

2. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 1, characterized in that, The U-shaped groove is fixedly connected to the chute body by welding, and the width of the U-shaped groove is adapted to the diameter of the steel bar. The gap between the width of the U-shaped groove and the diameter of the steel bar is no more than 1mm.

3. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 1, characterized in that, The number of U-shaped slots is multiple, and the multiple U-shaped slots are spaced apart along the axial direction of the steel bar, and the multiple U-shaped slots together support the middle section of the steel bar.

4. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 3, characterized in that, The bottom panel of the chute body is welded with the U-shaped slot, and the bottom of the U-shaped slot is fully welded to the bottom panel of the chute body.

5. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 1, characterized in that, The steel bars are arranged in an array on the material impact surface of the chute body, and the spacing between two adjacent steel bars ranges from 10 mm to 50 mm.

6. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 1, characterized in that, The steel bar is made of high wear-resistant alloy steel, and the diameter of the steel bar ranges from 20mm to 50mm.

7. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 1, characterized in that, The vertical guard plates on both sides of the chute body include: The first protective plate has multiple first through holes; The second protective plate has a plurality of second through holes, and the plurality of first through holes and the plurality of second through holes are arranged in a one-to-one correspondence. Wherein, the diameter of the first through hole is larger than the diameter of the steel bar, and the diameter of the second through hole is smaller than the diameter of the steel bar.

8. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 7, characterized in that, One end of the steel bar is configured as a stepped shaft structure, and the other end is configured with an external thread structure. The steel bar passes through the first through hole of the first guard plate and the second through hole of the second guard plate in sequence, so that one end of the external thread structure is exposed on the outside of the second guard plate and locked to the outside of the second guard plate by the fastening nut. One end of the stepped shaft structure is stuck on the outside of the first guard plate.

9. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 1, characterized in that, The fastening nut is a crown nut or wing nut that is easy to install and remove. After tightening, it can ensure that the steel bar does not move axially under the impact of materials.

10. The wear-resistant device for the easy-to-maintain sintering conveyor belt feeding chute according to claim 1, characterized in that, An anti-loosening washer is also provided between the steel bar and the fastening nut to prevent the fastening nut from loosening under vibration conditions.

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