A multi-layer replaceable buffer baffle structure

Abstract

This utility model provides a multi-layer replaceable buffer baffle structure, relating to the field of underground engineering and mine chute equipment protection technology. The utility model includes a base plate for fixed installation at the location to be protected; multiple buffer layers stacked on top of each other on the base plate; a pressure strip structure for pressing down at least the two sides of the buffer layers; and fasteners for fixing the pressure strip structure to the base plate, thus securing the buffer layers to the base plate. Compared with existing technologies, this utility model has the advantage of only tearing off the damaged layer in cases of surface wear or localized damage, avoiding complete removal. This significantly reduces material waste and replacement costs, while effectively shortening downtime and maintenance cycles, and improving continuous operation capability.

Description

Technical Field

[0001] This utility model relates to the field of underground engineering and mine chute equipment protection technology, and in particular to a multi-layer replaceable buffer baffle structure. Background Technology

[0002] In high-impact construction environments such as underground engineering and mine ore passes, soil particles or heavy objects often directly impact the inner walls of equipment or the surface of slag discharge channels during high-speed movement, easily leading to localized wear, dents, or even damage to the structural surface. To delay the wear cycle of equipment and improve structural durability, buffer baffles are usually installed in the impact area to dissipate impact energy and achieve a protective effect.

[0003] However, most existing buffer barriers are monolithic structures, which, while providing some impact resistance, lack flexibility in structural design. Especially in scenarios with frequent operation or concentrated point impacts, damage to a portion typically necessitates the complete removal and replacement of the entire barrier. This replacement method not only wastes materials but also complicates maintenance, increasing downtime and the frequency of operational interventions. The replacement process often requires the removal of multiple fasteners or outer structures, disrupting normal workflows and failing to meet the demands for rapid recovery and continuous operation under high-intensity, high-frequency conditions. Utility Model Content

[0004] The purpose of this application is to provide a multi-layer replaceable buffer baffle structure to solve the above-mentioned technical problems existing in the prior art.

[0005] This application provides a multi-layer replaceable buffer baffle structure, which adopts the following technical solution:

[0006] A multi-layer replaceable buffer baffle structure, comprising:

[0007] A substrate, which is used to be fixedly installed at the location to be protected;

[0008] The buffer layer is multi-layered, and the multiple buffer layers are stacked on the substrate.

[0009] A pressure strip structure, wherein the pressure strip structure is at least used to press down the two side edges of the buffer layer;

[0010] A fastener is used to fix the pressure strip structure to the substrate so that the buffer layer is fixedly disposed on the substrate.

[0011] Preferably, a de-adhesive film layer is provided between adjacent buffer layers;

[0012] And / or, the buffer layer is provided with color markings of different colors or color gradients along its thickness direction to indicate the degree of wear;

[0013] And / or, the bottommost buffer layer is bonded to the surface of the substrate by a double-sided adhesive layer.

[0014] Preferably, the fastener includes a screw that passes through the pressure strip structure and is threadedly connected to the substrate.

[0015] Preferably, the pressure strip structure includes a pressure strip plate, the pressure strip plate having a recess on the side away from the substrate, and the screw head of the screw is located on the recess.

[0016] Preferably, the pressure strip structure is respectively disposed on the opposite two sides of the buffer layer, and the other two opposite sides of the buffer layer are provided with limiting plates. The limiting plates abut against the buffer layer, and the limiting plates can wear synchronously with the buffer layer during the wear process of the buffer layer.

[0017] Preferably, the limiting plate is provided with a snap-fit ​​structure for attaching and detaching the buffer layer.

[0018] Preferably, a first structural member is provided between the pressure strip and the substrate to buffer the clamping force and prevent the pressure strip from loosening.

[0019] Preferably, the first structural component includes an anti-loosening washer or a spring washer;

[0020] And / or, the first structural member includes a protective strip, the protective strip being arranged along the length direction of the pressure strip, the protective strip being made of rubber material;

[0021] And / or, the end wall of the pressure strip away from the substrate is flush with the outermost buffer layer, or partially embedded in the buffer layer;

[0022] And / or, the pressure strip is provided with a guide bevel near the edge of the buffer layer.

[0023] Preferably, the protective strip has a deformation cavity, and the screw passes through the protective strip.

[0024] Preferably, the release film layer is a polytetrafluoroethylene film layer or a silicone oil film layer, and the thickness of each layer is 0.02 mm to 0.08 mm;

[0025] And / or, the layer structure of the buffer layer comprises one or more of the following layer structures: a polyurethane rubber layer, an EVA foam layer, or a polymer elastic layer.

[0026] This utility model has the following advantages and beneficial effects:

[0027] (1) This utility model solves the problem of existing buffer baffles requiring overall replacement and having low maintenance efficiency by designing the buffer layer as a multi-layer stacked structure and using pressure strip structure and fasteners to achieve stable positioning. Compared with traditional integral baffles, this structure allows only the damaged layer to be torn off in the case of surface wear or local damage, avoiding overall removal and significantly reducing material waste and replacement costs; at the same time, the buffer layer can be replaced by loosening the pressure strip structure, reducing the need for complete disassembly of multiple fixed components, effectively shortening downtime and maintenance cycle, and improving continuous operation capability. In addition, the structure has a high degree of modularity, adapting to working conditions with different operating intensities and wear levels, and is especially suitable for harsh scenarios such as concentrated point impacts and high-frequency wear, achieving rapid recovery, protection upgrade and economic improvement throughout the entire life cycle.

[0028] (2) The present invention uses a pressure strip structure set on both sides of the buffer layer, which not only achieves the pressing and fixing of the buffer layer, but also effectively prevents the layer edge from warping, misaligning or falling off, enhances the structural stability and ensures long-term operational reliability. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the buffer baffle.

[0031] Figure 2 This is a schematic diagram designed to show the structure of the substrate, buffer layer, and release film layer.

[0032] Figure 3 It is an exploded view designed to show the screw and the limiting plate.

[0033] The diagram is marked as follows:

[0034] 100, Substrate; 200, Buffer layer; 210, Release film layer; 220, Color marking; 230, Double-sided adhesive layer; 300, Pressure strip structure; 310, Pressure strip plate; 311, Recessed part; 312, Guide angle; 400, Fixing component; 410, Screw; 500, Limiting plate; 510, Clip groove structure; 600, First structural component; 610, Protective strip; 611, Deformation cavity. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] The following is combined with Figures 1 to 3 The present application provides a detailed description of a multi-layer replaceable buffer baffle structure through specific embodiments and application scenarios.

[0037] A multi-layer replaceable buffer baffle structure includes a base plate 100, which can be made of materials such as steel plate or high-strength composite material, and is used for installation at the location to be protected, including the inner wall of equipment or the surface of the slag discharge channel in actual engineering applications. Fixing holes are pre-positioned on the surface of the base plate 100 for fixing the base plate 100 with bolts or other connectors. The size of the base plate 100 can be designed as a modular splicing size according to different installation requirements to adapt to areas of different sizes to be protected. During assembly, multiple units can be combined to cover a larger protective surface, and maintenance is convenient and the structure is uniform.

[0038] Reference Figure 2 As shown, the buffer layer 200 consists of multiple layers, which are stacked on the substrate 100 using a surface-contact adhesive structure. This ensures tight adhesion between the layers and good buffer continuity during force transmission. The number of buffer layers 200 can be flexibly set according to factors such as impact intensity, frequency, and maintenance cycle under actual operating conditions, for example, 3 to 6 layers, minimizing the overall thickness while meeting service life requirements. This multi-layer structure enables graded energy absorption and layer-by-layer dissipation, reducing the risk of concentrated damage from instantaneous impacts and delaying overall failure time, thereby achieving graded performance protection.

[0039] Each buffer layer 200 can be made of materials such as polyurethane rubber, EVA foam, or polymer elastomers. Different materials can be rationally combined and combined according to the actual impact medium (such as rock, soil, metal fragments, etc.), working environment temperature, humidity, and replacement frequency. For example, a highly wear-resistant polyurethane rubber material can be used as the outer layer, a highly elastic EVA material can be used as the main buffer layer 200 in the middle layer, and a softer polymer elastomer can be used in the inner layer to improve absorption capacity and interface compatibility. The above materials can also be replaced with equivalent functional materials, such as thermoplastic elastomers (TPE) and butyl rubber (IIR), to achieve similar performance adjustments and meet diverse selection needs under different cost or supply chain conditions.

[0040] As a preferred embodiment, a release film layer 210 is provided between adjacent buffer layers 200. The main function of the release film layer 210 is to reduce interlayer adhesion, ensuring a quick and smooth peeling operation when the surface buffer layer 200 wears to the point of replacement, thereby exposing the undamaged underlying buffer material, restoring the overall buffering performance of the structure, avoiding the need to replace the entire baffle due to single-layer wear, and significantly improving maintenance efficiency and material utilization. The release film layer 210 can be made of polytetrafluoroethylene (PTFE) film or silicone oil film, which has excellent release properties. A thickness of 0.02-0.08 mm is recommended to balance the release effect with the control of the overall stack thickness, avoiding structural deformation, installation difficulties, or decreased buffering performance due to excessive stacking.

[0041] Meanwhile, the release film layer 210 also has a certain degree of flexibility and primary buffering performance. During the impact process, it can work together with the buffer main layer material to absorb external energy, reduce stress concentration inside the structure, slow down the wear accumulation process, and improve the overall service life and operational stability.

[0042] Furthermore, to further improve the ease of maintenance and visual management of the buffer layer 200, color markings 220 are provided in the thickness direction of the buffer layer 200. These markings can adopt various forms such as layered colors, intermittent color bands, or gradient colors to form clear color boundaries between different layers. These color markings 220 serve as a visual basis for wear assessment during routine inspections. For example, when a specific color is visible to a certain area or depth, it indicates that the buffer layer 200 is approaching or has reached the set replacement threshold. Staff can then perform timely replacement based on this visual information, avoiding material waste caused by excessive wear or premature replacement. The introduction of color markings 220 not only improves on-site maintenance efficiency but also significantly reduces the failure rate and downtime caused by misjudgment, contributing to a more scientific and efficient maintenance management strategy.

[0043] The bottom buffer layer 200 is bonded to the surface of the substrate 100 by double-sided adhesive layer 230, or other bonding or fixing methods can be used, such as deep embedded locking groove structure, magnetic adsorption fixing, etc., which can be used to ensure bonding strength while facilitating construction and later replacement.

[0044] The pressure strip structure 300 is used to hold the edge of the buffer layer 200. It is usually set at two opposite edge positions of the buffer layer 200 to ensure that the buffer material can stably adhere to the surface of the substrate 100 after placement. When subjected to slag discharge impact, vibration or equipment operating load, structural abnormalities such as displacement, edge warping or bulging will not occur, thereby ensuring the continuity and reliability of the buffer function.

[0045] The pressure strip structure 300 includes a pressure strip plate 310. A recess 311 is provided on the side of the pressure strip plate 310 away from the substrate 100. The recess 311 is used to accommodate the screw head of the screw 410, so that it is hidden inside the recess after being locked. This effectively avoids mechanical wear, impact damage or operational interference caused by the exposed screw head, and improves the safety and appearance integrity of the structure. At the same time, it is also convenient to maintain the compact structure and stable operation in space-constrained or high-frequency vibration environments.

[0046] In this embodiment, the fastener 400 includes a screw 410, which passes through a pre-drilled hole in the pressure strip plate 310 and is precisely connected to a threaded hole in the base plate 100. Tightening the screw secures the pressure strip structure 300. This connection method offers good connection strength and reliability, is suitable for environments subjected to high-frequency impact or continuous vibration, and facilitates subsequent disassembly and maintenance. The screw 410 can be made of high-strength alloy steel or corrosion-resistant stainless steel to ensure long-term stable operation under heavy loads and in humid and corrosive environments.

[0047] To adapt to different working conditions, in other optional embodiments, the fastener 400 can also be fixed using other fixing structures, such as quick-locking buckles, slot locking, slide rail embedded limiters, or elastic spring structures, to achieve tooling-based, rapid assembly and unlocking. Some structures can also be fixed by magnetic adsorption or by modular snap-fit ​​methods, further simplifying the operation process and improving on-site operation flexibility and module versatility.

[0048] To further improve clamping efficiency and edge stability, in this embodiment, reference is made to... Figure 3 As shown, the cross-sectional shape of the pressure strip 310 can be designed as Z-shaped. The Z-shaped structure forms a recessed edge section, which can concentrate the clamping force on the edge area of ​​the buffer layer 200, thereby enhancing the clamping effect and preventing local damage caused by edge loosening or stress concentration. In other optional embodiments, the pressure strip 310 can also be designed as L-shaped, U-shaped, or other cross-sectional shapes according to specific working conditions to adapt to different installation spaces or structural strength requirements.

[0049] The specific structural form of the recessed part 311 can also be set as a countersunk hole, a stepped hole or a non-through hole as needed to ensure that the screw head is firmly embedded and to prevent slippage or loosening caused by vibration or impact during operation.

[0050] A pressure strip structure 300 is disposed on the symmetrical edge of the buffer layer 200, while limiting plates 500 are provided on the other two side edges to constrain and position the boundaries of the buffer layer 200. The limiting plates 500 can be installed on the base plate 100 using methods such as embedding, snap-fitting, or sliding, further improving the overall installation stability and structural integrity. During actual operation, the limiting plates 500 wear synchronously with the buffer layer 200. Their presence not only prevents the buffer layer 200 from warping, slipping, or bulging due to edge wear, but also effectively absorbs edge impact loads, protecting the boundary area of ​​the buffer layer 200 from premature damage. The limiting plates 500 are preferably made of hard rubber, composite plastic, or other materials with controllable wear characteristics. By adjusting the material ratio and structural shape, their wear rate and replacement cycle can be flexibly set according to working conditions, balancing limiting, protection, and maintenance convenience. They are a key auxiliary component for improving the long-term operational stability of the system.

[0051] Reference Figure 2 As shown, the limiting plate 500 is provided with a snap-fit ​​structure 510. This snap-fit ​​is an open-type groove structure, its main function being to facilitate quick disassembly and assembly during replacement of the buffer layer 200 or maintenance operations. Workers can easily pry or pull out the worn buffer layer 200 by inserting a special tool into the snap-fit, significantly improving disassembly efficiency, avoiding damage to the structure using force, and reducing maintenance intensity and the risk of human-caused injury. In the standard structure, each limiting plate 500 has a pair of symmetrically distributed snap-fits on both sides, serving as both an operation entry point and facilitating quick alignment and precise insertion of the structure. This structural design balances ease of operation and safety, making it particularly suitable for scenarios requiring frequent changes or high-efficiency maintenance.

[0052] Furthermore, the slotted area on the limiting plate 500 can also serve as the deployment location for the color indicator 220. When the buffer layer 200 gradually wears down to near the replacement threshold, the preset color of the inner layer will gradually become visible through this area, providing workers with an intuitive indication of the remaining thickness, avoiding incorrect replacement and missed inspections, and improving inspection efficiency and maintenance accuracy. This structure integrates ease of disassembly and assembly with status visualization, further optimizing the application experience of multi-layer buffer structures under high-frequency, high-intensity impact conditions.

[0053] Of course, as an optional embodiment, the color markers 220 can not only be set in the edge area of ​​the buffer layer 200, but also pre-embedded in multiple key areas of each buffer layer 200 to achieve full-level wear condition monitoring. By distributing the color markers 220 in different parts of the buffer layer 200, even if there is no obvious wear at the edge of the buffer layer 200, color changes in the internal or central areas can still be detected in time, thereby avoiding misjudging the overall condition of the buffer layer 200 due to intact edge areas. This multi-point color marker 220 design can more comprehensively and accurately reflect the actual wear degree of the buffer layer 200, ensuring that maintenance personnel can make reasonable replacement decisions based on specific wear areas and depths, significantly improving the timeliness and accuracy of maintenance.

[0054] To enhance the fastening reliability of the pressure strip 310, a first structural component 600 is provided between the pressure strip 310 and the base plate 100. This component effectively compensates for the clamping force and prevents the pressure strip 310 from loosening or shifting due to prestress release or external vibration. The first structural component 600 can be an anti-loosening washer, a spring washer, or a conical elastic element. It possesses good resilience and energy absorption characteristics, absorbing axial deformation during the screw 410 tightening process, maintaining the stability of the screw 410's preload, improving the overall structure's vibration and fatigue resistance, and preventing loosening and failure after long-term operation.

[0055] In other embodiments, the first structural member 600 may also be a protective strip 610 structure. This protective strip 610 is continuously arranged along the length of the pressure strip 310, and is preferably made of rubber, thermoplastic elastomer, or flexible polymer material, possessing excellent wear resistance and flexible fit. The protective strip 610 body may have an internal deformation cavity 611 or a hollow structure, which undergoes controlled deformation during installation and clamping, forming a flexible compensation zone. This not only improves the stability of the pressure strip but also effectively absorbs stress fluctuations from impacts or vibrations. Furthermore, the protective strip 610 structure can effectively cover the screw 410, preventing its exposure or premature failure due to environmental corrosion. Simultaneously, it can also function as a limiting buffer layer 200 in the clamping area, further enhancing structural integrity and operational safety.

[0056] To extend the service life of the pressure strip 310 and reduce its risk of damage, the end wall of the pressure strip 310 away from the substrate 100 can be flush with the outer surface of the outermost buffer layer 200, or appropriately embedded inside the buffer layer 200, forming a smooth transitional protective interface. This design can effectively disperse the direct impact of high-speed heavy object impacts or complex impact loads on the pressure strip 310, reducing the frequency of wear and damage, and improving the durability and safety of the overall structure. Simultaneously, by partially covering or blocking the pressure strip 310 with the buffer layer 200, the impact force transmission can be slowed down, extending the service life of the pressure strip 310 and the fastener 400. For the material selection of the pressure strip 310, a wear-resistant and high-hardness material can be chosen.

[0057] Furthermore, to improve assembly convenience and the smoothness of the replacement process, a guide bevel structure 312 can be provided on the pressure strip 310 near the edge of the buffer layer 200. This bevel design effectively guides the buffer layer to smoothly enter during replacement or insertion, avoiding jamming or damage caused by sharp edges or misalignment, thus ensuring smooth assembly operations. This not only improves the system's installation efficiency but also reduces the risk of secondary damage caused by poor assembly during maintenance, significantly enhancing the adaptability and reliability of the buffer baffle structure in actual high-frequency, high-intensity construction environments.

[0058] It should be noted that the aforementioned multi-layer replaceable buffer baffle structure can be considered a complete, independent modular unit. Each module, as an integrated buffer baffle unit, can be deployed independently and flexibly replaced. Through standardized design of dimensions and interfaces, multiple modular units can be spliced ​​together to cover a larger target protection area, meeting customized, multi-scenario, and multi-specification application needs. In terms of splicing methods, multiple modules can be connected by butt joints, interlocking connections, or mechanical positioning using structural limit pins, ensuring precise connections between modules, small gaps between joints, and high overall structural stability. This achieves a multi-module flexible buffer solution that is quick to assemble, easy to maintain, and structurally robust.

[0059] The working process of this embodiment is as follows: When the outermost buffer layer 200 suffers severe wear and performance degradation due to long-term use or frequent impacts, reaching the preset replacement threshold, the operator can use a conventional wrench to loosen the screw 410 on the pressure strip structure 300 without removing the entire baffle or the entire structure. Subsequently, the worn outer buffer material is peeled off manually or by auxiliary means, exposing the next intact buffer layer 200. Because a release film layer 210 is provided between adjacent buffer layers 200, the interlayer adhesion force is effectively reduced, making the peeling operation smoother and faster, reducing manpower consumption and process interference.

[0060] After removing the outer layer of cushioning material, the pressure strip structure 300 is readjusted and tightened to complete the partial update and restoration of the entire cushioning layer 200 without replacing the entire component. This replacement process is simple to operate, uses universal tools, and can be completed by personnel without requiring highly skilled expertise. It is quick, efficient, and significantly reduces operation and maintenance costs and equipment downtime.

[0061] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-layer replaceable buffer baffle structure, characterized in that, include: A substrate (100) is used to be fixedly installed at the location to be protected; The buffer layer (200) is multi-layered, and the multiple buffer layers (200) are stacked on the substrate (100); A pressure strip structure (300) is provided, which is used to press down on at least the two side edges of the buffer layer (200); A fastener (400) is used to fix the pressure strip structure (300) to the substrate (100) so that the buffer layer (200) is fixedly disposed on the substrate (100).

2. The multi-layer replaceable buffer baffle structure according to claim 1, characterized in that, A desiccant layer (210) is provided between adjacent buffer layers (200); And / or, the buffer layer (200) is provided with color markings (220) of different colors or color gradients along its thickness direction to indicate the degree of wear; And / or, the bottommost buffer layer (200) is bonded to the surface of the substrate (100) by a double-sided adhesive layer (230).

3. The multi-layer replaceable buffer baffle structure according to claim 1, characterized in that, The fastener (400) includes a screw (410) which passes through the pressure strip structure (300) and is threadedly connected to the base plate (100).

4. The multi-layer replaceable buffer baffle structure according to claim 3, characterized in that, The pressure strip structure (300) includes a pressure strip plate (310), the pressure strip plate (310) having a recess (311) on the side away from the substrate (100), and the screw head of the screw (410) is located on the recess (311).

5. The multi-layer replaceable buffer baffle structure according to claim 1, characterized in that, The pressure strip structure (300) is respectively disposed on the opposite two sides of the buffer layer (200), and the other two opposite sides of the buffer layer (200) are provided with limiting plates (500). The limiting plates (500) abut against the buffer layer (200). During the wear of the buffer layer (200), the limiting plates (500) can wear synchronously with the buffer layer (200).

6. The multi-layer replaceable buffer baffle structure according to claim 5, characterized in that, The limiting plate (500) is provided with a snap-fit ​​structure (510) for attaching and detaching the buffer layer (200).

7. The multi-layer replaceable buffer baffle structure according to claim 4, characterized in that, A first structural member (600) is provided between the pressure strip plate (310) and the base plate (100) to buffer the clamping force and prevent the pressure strip from loosening.

8. The multi-layer replaceable buffer baffle structure according to claim 7, characterized in that, The first structural component (600) includes an anti-loosening washer or a spring washer; And / or, the first structural member (600) includes a protective strip (610) arranged along the length of the pressure strip, the protective strip (610) being made of rubber material; And / or, the end wall of the pressure strip (310) away from the substrate (100) is flush with the outermost buffer layer (200), or partially embedded in the buffer layer (200); And / or, the pressure strip (310) is provided with a guide bevel (312) near the edge of the buffer layer (200).

9. The multi-layer replaceable buffer baffle structure according to claim 8, characterized in that, The protective strip (610) has a deformation cavity (611), and the screw (410) is inserted through the protective strip (610).

10. The multi-layer replaceable buffer baffle structure according to claim 2, characterized in that, The de-adhesive film layer (210) is a polytetrafluoroethylene film layer or a silicone oil film layer, and the thickness of each layer is 0.02 mm to 0.08 mm; And / or, the layer structure of the buffer layer (200) comprises one or more of the following layer structures: a polyurethane rubber layer, an EVA foam layer, or a polymer elastic layer.

Images