Buckling-pressing type distance-adjusting cover plate structure and fastener system adopting same

Abstract

The utility model relates to the technical field of track fastener accessories, in particular to a buckling-pressing type distance-adjusting cover plate structure and a fastener system adopting the same, the buckling-pressing type distance-adjusting cover plate structure comprises a distance-adjusting cover plate, and a through hole for a spike to penetrate through is formed in the middle of the distance-adjusting cover plate. A buckling boss is designed on the upper portion of the distance-adjusting cover plate and protrudes out of the side wall of the distance-adjusting cover plate, a pressing groove is formed between the buckling boss and the distance-adjusting cover plate, teeth are arranged on the two sides, corresponding to the through hole, of the bottom of the distance-adjusting cover plate, the distance-adjusting cover plate with the buckling boss is used for improving the anti-disengaging performance of the fastener, the upper iron cushion plate and the middle rubber cushion are prevented from jumping out upwards, and the service life of the fastener is prolonged. Meanwhile, the gauge can be adjusted through the teeth at the bottom.

Description

Technical Field

[0001] The utility model relates to the field of rail transportation, in particular to a buckling type distance-adjustable cover plate structure and a buckle system adopting the structure. Background Art

[0002] With the rapid development of urban rail transit, rail fasteners, as key components connecting rails and sleepers, have a direct impact on the stability, safety and comfort of trains and passengers. In traditional rail fastener systems, the anti-slip performance and track gauge adjustment capabilities of fasteners have always been the focus of technical improvements. Especially under complex working conditions such as high speed, heavy load and curved sections, the stability and reliability of fasteners are particularly important.

[0003] However, existing fastener systems often have the problem of insufficient anti-slip performance. During high-speed operation of the train, due to vibration and impact, the upper iron pad and middle rubber pad in the fastener system are prone to upward movement, which not only affects the stability of the fastener, but also may pose a threat to the safety of train operation. In addition, traditional track gauge adjustment methods are often cumbersome and inefficient, and it is difficult to meet the needs of modern urban rail transit for efficient and convenient maintenance. Summary of the invention

[0004] Based on this background, the utility model proposes a buckling type adjustable distance cover structure and a fastener system using the structure. The structure achieves buckling of the upper iron pad and pre-compression of the middle rubber pad by introducing an adjustable distance cover with a buckling boss, thereby preventing the upper iron pad and the middle rubber pad from jumping upward. At the same time, the tooth structure installed at the bottom of the adjustable distance cover provides a convenient and efficient solution for track gauge adjustment, meeting the higher requirements of modern urban rail transit for the performance of fastener systems.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: a buckled distance adjustment cover plate structure, including a distance adjustment cover plate, a through hole for inserting a spike is opened in the middle of the distance adjustment cover plate, a buckling boss is provided on the upper protruding side wall of the distance adjustment cover plate, and teeth are radially installed side by side on the bottom of the distance adjustment cover plate.

[0006] In order to further optimize the utility model, the following technical solutions can be preferably used:

[0007] Preferably, the distance-adjustable cover plate and the buckling boss are integrally formed.

[0008] Preferably, the buckling boss is U-shaped with a semi-enclosed design, and the distance-adjusting cover plate is square.

[0009] Preferably, the buckling bosses are symmetrically mounted on both sides of the distance-adjusting cover plate, and the distance-adjusting cover plate is T-shaped.

[0010] Preferably, the teeth on both sides at the bottom of the adjustable-distance cover plate are asymmetrically designed.

[0011] Preferably, the through holes of the adjustable-distance cover plate are countersunk holes, which are used to reduce the length of the spike. While ensuring the anti-pulling force of the fastener system, the anti-shearing ability is enhanced.

[0012] A fastener system includes an insulating coupling pad, a lower iron pad, an intermediate rubber pad, an upper iron pad, and a pad under the rail, which are installed in sequence from bottom to top. The lower iron pad is of a frame structure. A cavity is formed in the middle of the lower iron pad, and the intermediate rubber pad is embedded in the cavity. The intermediate rubber pad supports the upper iron pad. At the position corresponding to the top of the spike hole on the lower iron pad, the above-mentioned buckle-type adjustable-distance cover plate structure is installed. The buckle boss is used to buckle the upper iron pad, and a tooth area is arranged on the lower iron pad at the installation position of the adjustable-distance cover plate.

[0013] Preferably, the tooth area is asymmetrically installed and matches the teeth at the bottom of the adjustable-distance cover plate. By swapping the positions of the adjustable-distance cover plates on both sides, the gauge adjustment is achieved.

[0014] Preferably, the lower iron pad, the intermediate rubber pad, and the upper iron pad are connected by a pre-tightening bolt system.

[0015] Adopting the buckle-type adjustable-distance cover plate structure and its fastener system of the present utility model, the beneficial effects are mainly reflected in the following aspects:

[0016] 1. Significantly improve the anti-disengagement performance of the fastener: The pressure groove formed between the buckle boss at the top of the adjustable-distance cover plate and the adjustable-distance cover plate can tightly buckle the upper pad and the intermediate rubber pad, effectively preventing these components from popping up during the train operation. This design significantly improves the anti-disengagement performance of the fastener and ensures the stability and safety of the fastener system.

[0017] 2. Enhance the stability of the fastener: The design of the buckle boss not only improves the anti-disengagement performance but also further enhances the stability of the fastener in the transverse and longitudinal directions by increasing the contact area and friction with the upper pad. This helps to reduce the vibration and noise during the train operation and improve the comfort of passengers.

[0018] 3. Achieve fine gauge adjustment: The tooth structure installed radially at the bottom of the adjustable-distance cover plate provides a simple and effective solution for gauge adjustment. By adjusting the relative position of the teeth and the sleeper or other fixed components, the fine adjustment of the gauge can be conveniently achieved to meet the requirements of different lines and working conditions. This design improves the adaptability and flexibility of the fastener system.

[0019] 4. Improve installation and maintenance efficiency: The design of the snap - type adjustable - distance cover plate structure is simple and clear, and the cooperation between components is tight and easy to disassemble. This helps to reduce the difficulty and cost of installation and maintenance, and improve work efficiency. At the same time, this structure also facilitates troubleshooting and component replacement, ensuring the long - term stable operation of the fastener system.

[0020] 5. Prolong the service life of the fastener system: By enhancing the anti - detachment performance and stability, and achieving convenient gauge adjustment, the snap - type adjustable - distance cover plate structure and its fastener system described in this utility model help to reduce component damage and replacement frequency caused by vibration, impact, wear, etc. This helps to prolong the service life of the fastener system and reduce operating costs.

[0021] In summary, the snap - type adjustable - distance cover plate structure and its fastener system described in this utility model have significant advantages in terms of anti - detachment performance, stability, adaptability, installation and maintenance efficiency, and service life, providing a strong guarantee for the safe and efficient operation of urban rail transit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the snap - type adjustable - distance cover plate structure in Embodiment 1 Figure 1 ;

[0023] Figure 2 Schematic diagram of the snap - type adjustable - distance cover plate structure in Embodiment 1 Figure 2

[0024] Figure 3 Schematic perspective view of the fastener system in Embodiment 1;

[0025] Figure 4 Front view of the fastener system in Embodiment 1;

[0026] Figure 5 Schematic diagram of the usage state of the fastener system

[0027] Figure 6 Schematic diagram of the structure of the pre - assembled body in Embodiment 1;

[0028] Figure 7 Schematic diagram of the structure of the upper tie plate in Embodiment 1;

[0029] Figure 8 Schematic diagram of the structure of the lower tie plate in Embodiment 1;

[0030] Figure 9 Schematic diagram of the structure of the lateral stop in Embodiment 1;

[0031] Figure 10 Schematic diagram of the structure of the insulating coupling tie plate in Embodiment 1;

[0032] Figure 11 Schematic structural diagram of the under-rail pad in Embodiment 1;

[0033] Figure 12 Schematic structural diagram of the intermediate rubber pad in Embodiment 1;

[0034] Figure 13 Schematic structural diagram of the pre-tightening bolt system in Embodiment 1;

[0035] Figure 14 Schematic diagram of the structure of the clamping type distance-adjusting cover plate in Embodiment 2;

[0036] Figure 15 Schematic three-dimensional structure diagram of the fastening system in Embodiment 2;

[0037] Figure 16 Front view of the fastening system in Embodiment 2;

[0038] Figure 17 Schematic structural diagram of the pre-assembly in Embodiment 2;

[0039] Figure 18 Schematic structural diagram of the upper tie plate in Embodiment 2;

[0040] Figure 19 Schematic structural diagram of the lower tie plate in Embodiment 2;

[0041] Figure 20 Schematic structural diagram of the intermediate rubber pad in Embodiment 2..

[0042] In the figure: 1, rail; 2, under-rail pad; 3, insulating coupling pad; 4, lower tie plate; 5, upper tie plate; 6, intermediate rubber pad; 7, pre-tightening bolt system; 8, shoulder of lower tie plate; 9, shoulder of upper tie plate; 10, lateral block; 11, elastic clip; 12, gauge block; 13, retaining platform part; 14, limiting groove; 15, distance-adjusting cover plate; 16, clamping boss; 17, nylon sleeve; 18, cavity; 19, arc groove; 20, arched part; 21, positioning boss; 22, positioning groove; 23, square through-hole; 24, connecting part; 25, pressing groove; 26 - through-hole; 27, tooth. Detailed implementation manners

[0043] The following describes the preferred implementation manners of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0044] Embodiment 1:

[0045] As Figure 1, A clamping type adjustable distance cover plate structure, including an adjustable distance cover plate. A through hole 26 for passing through spikes is provided in the middle of the adjustable distance cover plate. A clamping boss 16 is installed on the top of the adjustable distance cover plate protruding from the side wall of the adjustable distance cover plate. A pressing groove 25 is formed between the clamping boss and the adjustable distance cover plate. The clamping boss 26 is integrally formed with the adjustable distance cover plate 15 through a connecting part 24. Tooth teeth 27 are designed on both sides of the through hole corresponding to the bottom of the adjustable distance cover plate. The tooth teeth are arranged side by side radially on both sides of the through hole; among them, the tooth teeth at the bottom of the adjustable distance cover plate are asymmetrically designed so as to adjust the gauge when applied to the fastener system subsequently; due to the design of the clamping boss, the spike length can be reduced, while ensuring the anti-pulling force of the fastener system, the anti-shearing ability is enhanced.

[0046] As Figures 2 - 10 shown, a fastener system includes an insulating coupling pad 3, a lower iron pad 4, an upper iron pad 5, and an under-rail pad 2 installed in sequence from bottom to top. Among them, a rail 1 is placed above the under-rail pad. Both sides of the rail are fixed by elastic bars 11. Gauge blocks 12 are installed at the positions corresponding to the elastic bars on the rail. Protrusions are designed on both sides of the under-rail pad to support the bottom of the gauge blocks; Lower iron pad shoulders 8 and upper iron pad shoulders 9 are respectively installed at the two side positions of the top of the lower iron pad and the upper iron pad. A transverse block 10 is installed between the lower iron pad shoulder and the upper iron pad shoulder. A retaining platform part 13 that cooperates with the upper iron pad is installed at the periphery of the two side spike holes on the lower iron pad. The cooperation of the two retaining platform parts restricts the horizontal movement of the upper iron pad; in this embodiment, the retaining platform part 13 is L-shaped and designed at the inner corner of the spike hole. A limiting groove 14 that cooperates with the retaining platform part is provided on the upper iron pad. In this embodiment, the limiting groove is a notch at the diagonal of the upper iron pad; An adjustable distance cover plate 15 is installed at the position corresponding to the top of the spike hole on the lower iron pad. A clamping boss 16 for clamping the upper iron pad is installed on the adjustable distance cover plate. Among them, nylon sleeves 17 and spikes are installed at the positions corresponding to the spike holes on the lower iron pad; In this embodiment, the clamping boss on the adjustable distance cover plate is semi-surrounding design. Due to the addition of the clamping boss on the adjustable distance cover plate, it is impossible to perform half-tooth differential adjustment by reversing the adjustable distance cover plate with a conventional symmetric structure. The tooth teeth on both sides of the lower iron pad are asymmetric structures. Swapping the two side cover plates and adjusting the positions can achieve half-tooth differential adjustment.

[0047] While this fastener is provided with shoulder structures on both sides of the upper and lower iron pads, a transverse block is added in the middle of the shoulders, and a clamping structure is provided between the transverse block and the lower iron pad, effectively preventing the risk of the transverse block falling out due to the vibration of the fastener during use. And L-shaped retaining platforms are installed around the spike holes on both sides of the lower iron pad, which cooperate with the outer shape of the upper iron pad to improve the lateral and longitudinal stability of the fastener and prevent the longitudinal movement of the upper iron pad. A boss is installed on the adjustable distance cover plate. When installing the fastener, the adjustable distance cover plate clamps the upper iron pad at the same time, which not only pre-presses the middle rubber pad, but also improves the anti-disconnection performance of the fastener and prevents the upper iron pad from popping up. This design also helps to optimize the force distribution, reduce the damage problems caused by local stress concentration, and extend the service life of the fastener.

[0048] Among them, the upper iron backing plate 5 and the lower iron backing plate 4 are both iron backing plates. The lower iron backing plate is of a frame structure. A cavity 18 is provided in the middle of the lower iron backing plate. An intermediate rubber pad 6 is embedded in the cavity 18. The intermediate rubber pad supports the bottom of the rail pad. In a specific design, in this embodiment: the cavity is a Z-shaped through hole, and the outer shape of the intermediate rubber pad is also designed in a Z shape. The above design: (1) Enhances the support stability: The iron backing plate, as the main structure, provides good rigidity and stability, while the intermediate rubber pad effectively absorbs vibration energy and reduces the impact of vibration on the track structure. (2) Improves the vibration damping effect: The embedding of the intermediate rubber pad further enhances the vibration damping performance of the fastener, enabling better attenuation of vibration during transmission, which is beneficial to protecting the track structure and the surrounding environment.

[0049] Furthermore, a clamping groove 22 is provided at the bottom inside the shoulder of the lower iron backing plate. A clamping boss 21 that cooperates with the clamping groove is designed at the bottom of the transverse block. The clamping boss 21 of the transverse block is embedded in the clamping groove 22 to prevent the transverse block from disengaging upward. An arc-shaped groove 19 is provided in the middle of the clamping groove, and an arched portion 20 is designed at the middle position of the clamping boss to prevent the transverse block from disengaging longitudinally.

[0050] Furthermore, the lower iron backing plate 4, the intermediate rubber pad, and the upper iron backing plate 5 are pre-assembled and connected through a pre-tightening bolt system 7 to form a pre-assembled body, which is convenient for construction and installation. The pre-tightening bolt system 7 can provide uniform tightening force to ensure the tight connection between the lower iron backing plate and the upper iron backing plate, preventing vibration and noise problems caused by loosening. At the same time, it is convenient for adjustment and maintenance: The pre-tightening bolt system is also convenient for adjusting and maintaining the fastener when needed, improving work efficiency and the maintainability of the system.

[0051] Embodiment 2:

[0052] As Figures 13 - 19 , the difference between this embodiment and Embodiment 1 is:

[0053] The difference between the buckle-type distance-adjusting cover plate structure in this embodiment and the buckle-type distance-adjusting cover plate structure in Embodiment 1 is that: the buckle bosses 16 on the distance-adjusting cover plate are symmetrically installed on both sides of the distance-adjusting cover plate, and the distance-adjusting cover plate is of a T shape. Due to the addition of buckle bosses on the distance-adjusting cover plate, it is impossible to perform half-tooth pitch distance adjustment by reversing the distance-adjusting cover plate like a conventional symmetric structure. The tooth profiles on both sides of the lower iron backing plate are of an asymmetric structure. By swapping the two cover plates on both sides and adjusting their positions, half-tooth pitch distance adjustment can be achieved.

[0054] In the corresponding fastener system, the retaining platform portion in this embodiment is designed in a straight shape. Inside the spike hole and parallel to the shoulder of the lower tie plate, a limiting groove 14 is provided on the upper tie plate and is matched with the retaining platform portion. In this embodiment, the limiting groove is a square hole at the diagonal of the upper tie plate. The buckling convex platforms on the distance-adjusting cover plate in this embodiment are symmetrically designed, and the symmetric buckling convex platforms press on both sides of the square hole; a square through hole 23 is also provided at the position of the middle rubber pad corresponding to the square hole.

[0055] It should be noted that in the description of the present invention, the terms indicating directions or position relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or position relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0056] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0057] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles or devices / equipment.

[0058] So far, the technical solution of the present invention has been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A clamping type adjustable distance cover plate structure, including an adjustable distance cover plate, characterized in that: A through hole for passing through a spike is formed in the middle of the adjustable-spacing cover plate. A buckling boss protrudes from the upper part of the adjustable-spacing cover plate and is arranged on the side wall of the adjustable-spacing cover plate. Teeth are arranged at the bottom of the adjustable-spacing cover plate on both sides corresponding to the through hole.

2. The snap - type adjustable - distance cover plate structure according to claim 1, wherein: The adjustable-spacing cover plate and the buckling boss are integrally formed.

3. According to claim 1 or the snap-on adjustable distance cover plate structure described above, it is characterized in that: The buckling boss is of a U-shaped semi-surrounding design, and the adjustable-spacing cover plate is square.

4. A clamping type adjustable distance cover plate structure according to claim 1 or 2, characterized in that: The buckling bosses are symmetrically installed on both sides of the adjustable-spacing cover plate, and the adjustable-spacing cover plate is T-shaped.

5. A snap-on adjustable distance cover plate structure according to claim 1, characterized in that: The teeth on both sides at the bottom of the adjustable-spacing cover plate are asymmetrically designed.

6. A snap-on adjustable distance cover plate structure according to claim 1, characterized in that: The through hole of the adjustable-spacing cover plate is a countersunk hole, which is used to reduce the length of the spike, and while ensuring the anti-pulling force of the fastener system, enhance the anti-shear ability of the bolt.

7. A fastener system, characterized in that: It includes an insulating coupling cushion plate, a lower tie plate, an intermediate rubber pad, an upper tie plate, and a rail pad installed in sequence from bottom to top. The lower tie plate is a tie plate, and the lower tie plate is of a frame structure. A cavity is formed in the middle of the lower tie plate, and an intermediate rubber pad is embedded in the cavity. The intermediate rubber pad supports the bottom of the rail pad. On the lower tie plate, an adjustable-spacing cover plate as described in any one of claims 1-4 is installed at the position corresponding to the top of the spike hole. The buckling boss is used to buckle the upper tie plate and the intermediate rubber pad. A tooth area is arranged on the lower tie plate at the installation position corresponding to the adjustable-spacing cover plate.

8. A fastening system according to claim 7, characterized in that: The tooth areas on both sides of the lower tie plate are asymmetrically designed and match the teeth at the bottom of the adjustable-spacing cover plate. By swapping the positions of the adjustable-spacing cover plates on both sides, the spacing adjustment is achieved.

9. A fastener system according to claim 7, characterized in that: The lower tie plate, the intermediate rubber pad, and the upper tie plate are connected by a pre-tightening bolt system.

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