Rail sleeper sleeve structure capable of buffering and damping

Abstract

The utility model discloses a rail sleeper sleeve structure that can buffer and shock attenuation belongs to railway track component technical field, including railway sleeper, and detachably installed in the quick release type protection mechanism of railway sleeper, quick release type protection mechanism includes the special-shaped outer ring, and the special-shaped outer ring outer wall is fixed with the elastic special-shaped block to with the inside wall of railway sleeper and is clamped, and its bottom integrally connected has the conical pipe, and the special-shaped outer ring inner wall fixedly connected with the silica gel inner ring of built -in reinforcing steel bar, and the silica gel inner ring is fixed with the sleeper embedded sleeve in, and the special-shaped outer ring inside still detachably clamped with C type snap ring, and C type snap ring is installed with the shock pad in. The utility model solves the problem of high cost caused by integral forming of the sleeve buffer and the main body, destructive overall replacement after wearing. Its through quick release type protection mechanism and the shock pad of independent replacement, realized the convenient grading maintenance, and the double shock attenuation structure buffering effect is good, and the maintenance cost is reduced significantly.

Description

Technical Field

[0001] This utility model relates to the field of railway track component technology, and in particular to a sleeper sleeve structure that can buffer and reduce shock. Background Technology

[0002] When railway tracks carry trains, continuous high-frequency vibrations and intense impact loads are generated between the wheels and rails. To ensure the stability and durability of the track structure, these loads need to be effectively transferred and absorbed by the sleepers through fastening devices. Therefore, it has become a standard practice to pre-embed sleeper sleeves in concrete sleepers (i.e., railway sleeper blocks). The sleeves are used to anchor and fix the rail fasteners (such as fixing rods) and withstand complex stresses from above.

[0003] To mitigate the direct damage of impact forces to the concrete structure of railway sleepers and extend the service life of track components, existing sleeper sleeve designs typically integrate elastic cushioning materials, such as rubber bushings or polymer gaskets, to achieve buffering and shock absorption. These cushioning materials continuously absorb and dissipate energy through their own elastic deformation during the sleeve's service life.

[0004] However, under the repeated action of long-term high-intensity and high-frequency dynamic loads, these elastic materials, which serve as the core buffer function, will inevitably experience performance degradation, material aging, elastic fatigue, or even breakage, resulting in a decrease in the shock absorption capacity of the sleeve and making it difficult to continue to provide effective protection.

[0005] Existing cushioning components are often manufactured using one-piece molding or permanent bonding processes. This "integrated" design makes it difficult for maintenance personnel to individually inspect or replace the internal cushioning material once it fails. The only repair method is to replace the entire sleeve already embedded in the railway sleeper block. This replacement operation is usually destructive, requiring the chiseling open the sleeper concrete, which is not only extremely difficult and time-consuming to construct, but also seriously damages the sleeper structure, significantly increasing the life-cycle maintenance cost and maintenance frequency of the track. This does not meet the requirements of modern railway equipment for efficient and economical maintenance. Therefore, a cushioning and shock-absorbing sleeper sleeve structure is proposed to solve the above problems. Utility Model Content

[0006] In the existing technology, the buffer components of the shock-absorbing sleeper sleeve structure are integrally formed with the main body of the sleeve, which makes it difficult to replace the buffer components individually after they wear out. Instead, the entire sleeve must be replaced in a destructive manner, which leads to high maintenance costs, complex construction, and easy damage to the sleeper structure. The present invention aims to provide a shock-absorbing sleeper sleeve structure with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a sleeper sleeve structure with buffer and shock absorption, including a railway sleeper block and a quick-release protective mechanism that can be detachably installed in the railway sleeper block.

[0008] The quick-release protective mechanism is the core functional component for achieving buffering and convenient maintenance. Specifically, it includes a shaped outer ring as the main frame; multiple elastic shaped blocks are fixedly connected to the outer wall of the shaped outer ring, which reversibly engage and fix with the inner wall of the railway sleeper block through their elastic deformation; a tapered tube is integrally connected to the bottom of the shaped outer ring, which guides alignment during installation; inside the shaped outer ring, a silicone inner ring, serving as the main buffer structure, is firmly fixed to its inner wall; to enhance the structural strength and load-bearing capacity of the silicone inner ring, multiple reinforcing steel bars are evenly embedded circumferentially inside. The inner wall of the silicone inner ring is fixedly connected to a sleeper pre-embedded sleeve, which forms a central channel for accommodating the fixing rod. Furthermore, the interior of the irregular outer ring also accommodates an independently replaceable secondary shock absorption assembly. The secondary shock absorption assembly includes a C-shaped retaining ring that is detachably engaged with the irregular outer ring, and a shock-absorbing pad installed inside the C-shaped retaining ring. An extraction port is provided between the C-shaped retaining ring and the shock-absorbing pad to facilitate the use of tools to grasp and replace the assembly. This utility model also includes a fixing rod, which, in the assembled state, is sequentially inserted through the shock-absorbing pad and the sleeper pre-embedded sleeve to transfer track stress to the buffer structure.

[0009] Preferably, to facilitate the easy assembly and disassembly of the C-shaped retaining ring, an annular groove is provided on the top inner wall of the irregular outer ring. The C-shaped retaining ring is detachably fixed in the annular groove by means of its own elastic deformation, thereby reliably limiting the axial position of the secondary shock absorption component.

[0010] Preferably, to achieve reliable elastic engagement and disengagement, the elastic irregular block is made of silicone material, ensuring that it can deform sufficiently when compressed to disengage from the engagement and can reliably reset after being installed in place.

[0011] Preferably, the silicone inner ring serves as the first layer of buffer structure, and the shock-absorbing pad serves as the second layer of buffer structure. The two work together to form a dual shock absorption system of this sleeve structure, which absorbs and dissipates impact energy in a layered manner, thereby improving the overall shock absorption performance and service life of the device.

[0012] Preferably, the quick-release protective mechanism is an integrable modular component, which includes the irregular outer ring, the irregular block fixed thereon, the silicon Gua inner ring, the reinforcing steel bar embedded in the silicon Gua inner ring, the sleeper pre-embedded sleeve fixed in the silicon Gua inner ring, and the tapered tube integrally connected.

[0013] Preferably, the secondary shock absorption component is a replaceable sub-module, which includes the C-shaped retaining ring, the shock absorption pad, and the extraction port. The component can be removed and replaced separately without disassembling the main body of the quick-release protective mechanism.

[0014] Preferably, in terms of spatial position, the C-shaped retaining ring and the shock-absorbing pad are jointly disposed inside the irregular outer ring and above the silicone inner ring, and the two together bear the impact transmitted by the fixing rod in the axial direction.

[0015] Preferably, in terms of structural relationship, the sleeper pre-embedded sleeve is completely covered and fixed to its inner wall by the silicone inner ring. This structure ensures that the impact force transmitted by the fixing rod can first and fully act on the silicone inner ring to achieve the main buffer function.

[0016] This utility model has the following beneficial effects: 1. This utility model solves the problem of high cost caused by the integral molding of the sleeve and buffer components and the need for destructive replacement after wear in the prior art by setting up a quick-release protective mechanism that can be disassembled as a whole and integrating independently replaceable shock-absorbing pads inside it. It achieves the effect of hierarchical maintenance by setting up a quick-release protective mechanism that can be disassembled as a whole and integrating an independently replaceable shock-absorbing pad inside it, which significantly reduces track maintenance costs and improves maintenance efficiency.

[0017] 2. This utility model solves the problems of difficult connection and disassembly of the sleeve and the sleeper block and easy damage to the sleeper block in the prior art by setting an elastic irregular block on the outer wall of the irregular outer ring and using its elastic deformation to achieve engagement and disassembly with the inner wall of the railway sleeper block. It achieves the technical effect of convenient installation, reliable connection and non-destructive disassembly, protects the integrity of the railway sleeper block and simplifies on-site construction operations.

[0018] 3. This utility model solves the problem of limited shock absorption effect and easy sleeper cracking under long-term load in the existing single buffer structure by setting a double shock absorption structure consisting of a silicone inner ring with built-in reinforcing steel bars and shock-absorbing pads. It achieves the technical effect of efficient buffering and shock absorption and synergistic dispersion of impact force, enhances the compression resistance and fatigue resistance of the sleeve, effectively protects the sleeper structure, and improves the safety and stability of track operation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a sleeper sleeve structure with buffer and shock absorption proposed in this utility model; Figure 2 This is a schematic diagram of a railway sleeper block with a buffer and shock absorption sleeper sleeve structure proposed in this utility model; Figure 3This is a schematic diagram of the irregular outer ring of a sleeper sleeve structure that can buffer and reduce shock according to this utility model; Figure 4 This is a schematic diagram of the pre-embedded sleeve of a sleeper, which is a type of sleeper sleeve structure that can buffer and reduce shock according to this utility model.

[0020] Legend: 1. Railway sleeper block; 2. Quick-release protective mechanism; 21. Irregular outer ring; 22. Irregular block; 23. Silicone inner ring; 24. Reinforcing steel bar; 25. Sleeper embedded sleeve; 26. Tapered tube; 3. C-type retaining ring; 4. Shock-absorbing pad; 5. Extraction port; 6. Fixing rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Reference Figures 1 to 4 This utility model provides a sleeper sleeve structure that can buffer and dampen shocks. It aims to solve the problem that in the prior art, the buffer component of the sleeper sleeve is integrally formed with the sleeve, and the whole body needs to be replaced after wear, resulting in high maintenance costs and complicated operation.

[0023] A shock-absorbing and cushioning sleeper sleeve structure includes a railway sleeper block 1 and a quick-release protective mechanism 2 detachably installed inside the railway sleeper block 1. The railway sleeper block 1 serves as the mounting base for the overall structure, and the quick-release protective mechanism 2 is a core functional component for achieving graded shock absorption and rapid maintenance. Specifically, the quick-release protective mechanism 2 includes a shaped outer ring 21 as the main frame. Multiple elastic shaped blocks 22 are fixedly connected to the outer wall of the shaped outer ring 21. These shaped blocks 22 are used to engage and fix with the inner wall of the railway sleeper block 1. A tapered tube 26, which serves as a guide during installation, is integrally connected to the bottom of the shaped outer ring 21. Inside, a silicone inner ring 23 serving as the main buffer structure is fixedly connected to its inner wall. Multiple reinforcing steel bars 24 are evenly embedded in the inner ring 23 to enhance the structural strength. A sleeper pre-embedded sleeve 25 is fixedly connected to the inner wall of the silicone inner ring 23. The irregular outer ring 21 also has a component serving as a secondary shock absorption structure. The component includes a C-shaped retaining ring 3 that is detachably engaged inside the irregular outer ring 21, and a shock-absorbing pad 4 installed inside the C-shaped retaining ring 3. An extraction port 5 for easy replacement is provided between the C-shaped retaining ring 3 and the shock-absorbing pad 4. A fixing rod 6 for fastening the rail is sequentially inserted through the central through hole of the shock-absorbing pad 4 and the sleeper pre-embedded sleeve 25.

[0024] The quick-release protective mechanism 2 enables rapid assembly and disassembly. This is mainly achieved by multiple elastic irregular blocks 22 fixedly connected to the outer wall of the irregular outer ring 21. The irregular blocks 22 are preferably silicone blocks. Utilizing the material's characteristic of easily deforming elastically under pressure, when the quick-release protective mechanism 2 is pressed into the inner hole of the railway sleeper block 1, the irregular blocks 22 are compressed by the inner hole wall. After the quick-release protective mechanism 2 is installed in place, the irregular blocks 22 elastically recover and firmly engage with the preset groove or rough surface on the inner hole wall, thereby locking the entire quick-release protective mechanism 2 inside the railway sleeper block 1. When disassembly is required, by applying sufficient axial pull-out force to the irregular outer ring 21, the irregular blocks 22 will be deformed again under pressure, thereby releasing the engagement with the inner hole wall and allowing the entire quick-release protective mechanism 2 to be easily removed.

[0025] The double shock absorption structure inside the quick-release protective mechanism 2 ensures a highly efficient buffering effect. The first layer of shock absorption is mainly borne by the silicone inner ring 23, which is fixedly connected to the inner wall of the irregular outer ring 21. The impact force is transmitted to the sleeper pre-embedded sleeve 25 by the fixed rod 6, and then evenly transmitted to the entire silicone inner ring 23 by the sleeper pre-embedded sleeve 25. The silicone inner ring 23 absorbs most of the impact energy through its own elastic deformation. In order to prevent the silicone inner ring 23 from structurally damaging under huge impacts, multiple reinforcing steel bars 24 are also evenly embedded in its interior. The reinforcing steel bars 24 significantly enhance the overall rigidity and tensile and compressive strength of the silicone inner ring 23, ensuring the integrity and durability of the main buffer structure. The second layer of shock absorption is completed by the shock-absorbing pad 4. The residual vibration and impact force after the first layer of buffering will be further transmitted to the shock-absorbing pad 4, which will absorb the impact energy, thereby achieving complete dissipation of impact energy and effectively protecting the railway sleeper block 1 from damage.

[0026] As a preferred embodiment, in order to achieve quick replacement of the damping pad 4, such as Figure 3 and Figure 4 As shown, an annular groove is provided on the top inner wall of the irregular outer ring 21. The C-shaped retaining ring 3 is an elastic ring with an opening. During installation, its opening can be expanded or compressed by external force. When the shock-absorbing pad 4 is placed into the irregular outer ring 21, the C-shaped retaining ring 3 is pressed in. The outer edge of the C-shaped retaining ring 3 will precisely engage with the annular groove through its own elastic deformation, thereby reliably limiting the shock-absorbing pad 4 axially in the irregular outer ring 21. For easy disassembly, an extraction port 5 is also provided between the C-shaped retaining ring 3 and the shock-absorbing pad 4. Maintenance personnel can use tools to hook or clamp the C-shaped retaining ring 3 or the shock-absorbing pad 4 through the extraction port 5, apply external force to disengage it from the engaging state and remove it.

[0027] As another preferred embodiment, in order to improve the convenience and success rate of the quick-release protective mechanism 2 during installation, a tapered tube 26 is integrally formed at the bottom of the irregular outer ring 21. The outer diameter of the tapered tube 26 gradually increases from bottom to top, forming a smooth guide slope. When the quick-release protective mechanism 2 is installed into the inner hole of the railway sleeper block 1, the tapered tube 26 can play a precise centering and guiding role, ensuring that the main body with the irregular block 22 can smoothly enter and be correctly positioned.

[0028] As another preferred embodiment, the entire sleeper sleeve structure also includes a fixing rod 6 for fastening the rail, such as... Figure 2As shown, the fixing rod 6 passes through the center hole of the shock-absorbing pad 4 and the center hole of the sleeper pre-embedded sleeve 25 in sequence. Its upper end is connected to the rail fastener, and its lower end is fixed to the railway sleeper block 1 or other foundation structure by means of threads, so as to firmly anchor the entire track device to the sleeper. When the train passes, the impact force from the rail is transmitted to the quick-release protection mechanism 2 through the fixing rod 6, and is buffered and absorbed by the double shock-absorbing structure composed of the silicone inner ring 23 and the shock-absorbing pad 4.

[0029] The implementation principle of this application embodiment is as follows: This device has a quick-release protective mechanism 2 that can be disassembled inside the railway sleeper block 1, a C-shaped retaining ring 3 that engages inside the quick-release protective mechanism 2, a shock-absorbing pad 4 fixed inside the C-shaped retaining ring 3, and an extraction port 5 opened between the C-shaped retaining ring 3 and the shock-absorbing pad 4. The internal structure of the quick-release protective mechanism 2 can fix the railway sleeper block 1 and the fixing rod 6. The mechanical cooperation between the irregular outer ring 21 inside the quick-release protective mechanism 2 and the C-shaped retaining ring 3 ensures the fixing stability of the C-shaped retaining ring 3 and realizes the first reduction of the vibration generated between the wheel and the rail when the train is running. Subsequently, the internal structure of the quick-release protective mechanism 2 reduces the strong vibration generated between the wheel and the rail when the train is running for the second time. It realizes the partial replacement of the sleeve without disassembly, solves the high cost problem of the traditional sleeve buffer component being integrally molded with the sleeve and needing to be replaced as a whole after wear, and reduces the track maintenance cost.

[0030] During the process of the quick-release protective mechanism 2 mitigating the vibration between the train wheels and rails, the sleeper pre-embedded sleeve 25, fixed to the inner wall of the silicone inner ring 23, fixes the fixing rod 6 inside the railway sleeper block 1, making it difficult to disassemble the fixing rod 6 by manual force. Multiple silicone irregular blocks 22 fixed to the outer wall of the irregular outer ring 21 allow the quick-release protective mechanism 2 inside the railway sleeper block 1 to be replaced entirely by manual operation. As the train runs, the impact force is applied to the sleeper pre-embedded sleeve 25. The impact force is absorbed inside the silicone inner ring 23. The silicone inner ring 23, which is fixed inside the irregular outer ring 21, has multiple reinforcing steel bars 24 that provide reinforcement and can withstand the axial tensile force generated by the impact. This enhances the compressive strength of the sleeve in the radial direction, prevents cracks in the sleeper, and reduces the cost and frequency of railway maintenance. Under the synergistic effect of the buffer layer and the reinforcing steel components, they jointly bear and disperse the impact force, ensuring that the sleeper sleeve can maintain the stability and integrity of the structure under complex stress environment, thereby achieving a highly efficient protective buffering and shock absorption effect.

[0031] During the replacement of the quick-release protective mechanism 2 and the shock-absorbing pads 4 inside the quick-release protective mechanism 2, when the entire quick-release protective mechanism 2 needs to be replaced, the clamping tool is fixed to the top outer wall of the irregular outer ring 21, and then moved upwards with force. The irregular block 22 is compressed and released from its locking state with the inside of the railway sleeper block 1. Then, the tapered tube 26 fixed at the bottom of the irregular outer ring 21 is aligned with the internal hole of the railway sleeper block 1. At the same time, the irregular block 22 is continuously squeezed by the railway sleeper block 1. When the irregular outer ring 21 is completely inserted into the railway sleeper block 1 and the irregular... Block 22 engages with the inner wall of the railway sleeper block 1, completing the replacement of the railway sleeper block 1. If only the shock-absorbing pad 4 needs to be replaced, simply insert the tool into the extraction port 5 to clamp and fix it so that the shock-absorbing pad 4 and the C-shaped retaining ring 3 can be disassembled from the inside of the irregular outer ring 21 by external force. Then take out the undamaged shock-absorbing pad 4, align the shock-absorbing pad 4 with the top of the irregular outer ring 21, and then press it down to engage the C-shaped retaining ring 3 with the hole on the inner wall of the top of the irregular outer ring 21. This completes the replacement of the quick-release protective mechanism 2 and the shock-absorbing pad 4.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shock-absorbing sleeper sleeve structure, comprising a railway sleeper block (1) and a quick-release protective mechanism (2) detachably installed in the railway sleeper block (1). Its features are, The quick-release protective mechanism (2) includes a special-shaped outer ring (21), and a plurality of elastic special-shaped blocks (22) are fixedly connected to the outer wall of the special-shaped outer ring (21) to engage with the inner wall of the railway sleeper block (1). A silicone inner ring (23) is fixedly connected to the inner wall of the special-shaped outer ring (21). A sleeper pre-embedded sleeve (25) for accommodating the fixing rod (6) is fixedly connected inside the silicone inner ring (23). A C-shaped retaining ring (3) can also be detachably engaged inside the special-shaped outer ring (21). A shock-absorbing pad (4) is installed inside the C-shaped retaining ring (3).

2. The sleeper sleeve structure with buffering and shock absorption according to claim 1, characterized in that, The silicone inner ring (23) has multiple reinforcing steel bars (24) evenly distributed in the inner ring direction.

3. The sleeper sleeve structure with buffering and shock absorption according to claim 1, characterized in that, The bottom of the irregular outer ring (21) is integrally connected to a tapered tube (26) for installation guidance.

4. The sleeper sleeve structure with buffering and shock absorption according to claim 1, characterized in that, An extraction port (5) is provided between the C-type retaining ring (3) and the shock-absorbing pad (4).

5. The sleeper sleeve structure with buffer and shock absorption according to claim 1, characterized in that, The top inner wall of the irregular outer ring (21) is provided with an annular groove, and the C-shaped retaining ring (3) is engaged in the annular groove by its own elastic deformation.

6. The sleeper sleeve structure with buffering and shock absorption according to claim 1, characterized in that, The irregular block (22) is a silicone block.

7. The sleeper sleeve structure with buffer and shock absorption according to claim 1, characterized in that, The sleeper sleeve structure also includes a fixing rod (6), which is sequentially inserted into the shock-absorbing pad (4) and the sleeper pre-embedded sleeve (25).

8. A sleeper sleeve structure with buffering and shock absorption according to claim 1 or 7, characterized in that, The silicone inner ring (23) and the shock-absorbing pad (4) constitute a dual shock-absorbing structure.

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