Shoulder type damping limiting block for track vibration attenuation fastener
By introducing damping limit blocks and limiting components into the shoulder-bar type track vibration damping fastener, the problem of insufficient vertical constraints of the stop is solved, more stable track connections are achieved, vibration and noise are reduced, and the operation stability and comfort of rail transit are improved.
Patent Information
- Application Number
- CN202422403966.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The stops of existing shoulder-bar type vibration-absorbing fasteners cannot provide vertical constraints, and they are prone to wear and create gaps after long-term use, resulting in reduced vibration damping effect and affecting the stability and comfort of rail transit.
The damping limit block is introduced into the shoulder-retaining track vibration damping fastener, and the vertical displacement of the upper iron pad is limited by limiting components such as nuts or covers. Combining the wear-resistant plate and elastomeric material, the vertical constraint effect is enhanced and the wear gap is eliminated.
It effectively improves the vertical constraints of the upper iron pads, ensures connection stability, reduces vibration and noise, improves the long-term operation stability and comfort of rail transit, and reduces maintenance costs.
Smart Images
Figure CN223163707U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rail transit vibration reduction, and particularly relates to a damping limit block for a shoulder-type rail vibration reduction fastener. Background Art
[0002] The rapid development of rail transit has provided convenience for people and effectively alleviated the pressure of urban traffic. However, at the same time, problems such as vibration and noise pollution generated during the operation of rail transit have been affecting the lives of residents in the radiation area of rail transit vehicles; it also affects the riding comfort. Therefore, the vibration reduction and noise reduction of rail transit vehicles have received more and more attention, and rail vibration reduction fasteners have emerged as the times require and have gradually been widely used in urban rail transit.
[0003] In related technologies, common vibration reduction fasteners include shoulder-type vibration reduction fasteners and double-layer non-linear vibration reduction fasteners, both of which can effectively enhance the vibration reduction effect of rail transit; among them, the shoulder-type vibration reduction fastener relies on shoulders and blocks to achieve the lateral limiting ability of the upper iron plate, thereby improving the lateral stiffness of the fastener and thus enhancing the stability and safety of the track system. However, in current technologies, the blocks usually adopt hard wear-resistant insulating materials, which can provide good lateral stiffness but cannot provide lateral vibration reduction effects; moreover, in the existing technologies, the blocks only provide lateral limiting functions and cannot provide upward constraint effects on the upper iron plate; in addition, during long-term use, the blocks are prone to fatigue wear and generate gaps, resulting in a reduction in the lateral stability of the fastener system. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a damping limit block for a shoulder-type rail vibration reduction fastener to solve at least one of the problems and defects mentioned in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A damping limit block for a shoulder-type rail vibration reduction fastener, comprising:
[0007] A fastener body, which includes a lower iron plate and an upper iron plate;
[0008] First shoulders are respectively arranged at both ends of the lower iron plate, and second shoulders are respectively arranged at both ends of the upper iron plate and are matched with the first shoulders;
[0009] A damping limit block is arranged between the first shoulder and the second shoulder;
[0010] A wear-resistant plate is arranged on one side of the damping limit block close to the second shoulder;
[0011] A limiting component is arranged on the first shoulder for limiting the vertical displacement of the upper iron plate.
[0012] The damping limit block for the shoulder-type track vibration damping fastener according to this solution has at least the following technical effects:
[0013] For the damping limit block of the shoulder-type track vibration damping fastener, the damping limit block is arranged between the first shoulder and the second shoulder, and a limiting component is arranged on the first shoulder to limit the vertical displacement of the upper iron pad. The limiting component can effectively enhance the vertical constraint effect of the upper iron pad, and can eliminate the gap generated due to long-term wear between the first shoulder and the second shoulder, resulting in a reduction in the vibration damping effect or vibration damping failure, ensuring the stability and reliability of the connection between the first shoulder and the second shoulder; at the same time, it effectively reduces the vibration and noise generated during the operation of rail transit, improves the long-term operation stability and comfort of rail transit, and reduces the maintenance cost.
[0014] As a further solution of the present utility model: first bending parts are respectively arranged on both sides of the first shoulder, second bending parts are respectively arranged on both sides of the damping limit block, and the outer side walls on both sides of the second bending parts are respectively abutted against the inner side walls on both sides of the first bending parts.
[0015] As a further solution of the present utility model: both sides of the second shoulder are respectively abutted against the inner side walls on both sides of the second bending parts.
[0016] Since first bending parts are respectively arranged on both sides of the first shoulder, second bending parts are respectively arranged on both sides of the damping limit block, the outer side walls on both sides of the second bending parts are respectively abutted against the inner side walls on both sides of the first bending parts, and both sides of the second shoulder are respectively abutted against the inner side walls on both sides of the second bending parts, the second shoulder is clamped in the damping limit block, and the damping limit block is clamped in the first shoulder, which can effectively limit the longitudinal and transverse displacements of the upper iron pad along the rail, ensure the stability and reliability of the connection between the upper iron pad and the lower iron pad, improve the constraint effect on the longitudinal and transverse displacements of the upper iron pad along the rail, and the combined wedge-shaped structure corresponding to the shoulder positions of the upper and lower iron pads enables the damping limit block to eliminate the fitting gap between the first shoulder and the second shoulder due to production tolerances or long-term wear, making the contact between the first shoulder and the second shoulder closer and improving the overall stability of the overall structure of the fastener.
[0017] As a further solution of the present utility model: a shielding part is arranged at the top of the damping limit block, and the top of the second shoulder is abutted against the inner side wall of the shielding part.
[0018] Since a shielding part is arranged at the top of the damping limit block, and the top of the second shoulder is abutted against the inner side wall of the shielding part, it can effectively prevent the vertical displacement of the upper iron pad, further ensure the stability and reliability of the connection between the upper iron pad and the lower iron pad, improve the limiting effect on the vertical displacement of the upper iron pad, and make the overall performance of the fastener system more stable and reliable.
[0019] As a further solution of the present utility model: the limiting component is a nut arranged on one side of the first shoulder, and the nut passes through the first shoulder and is connected to the damping limit block.
[0020] In this embodiment, the damping limit block is made of a high-strength insulating material, preferably made of glass fiber reinforced nylon 66. Since the limiting component is a nut arranged on one side of the first shoulder, the nut passes through the first shoulder and is connected to the damping limit block, which can effectively mechanically limit the damping limit block. On the one hand, it can provide a limiting effect on the upward displacement generated by the deflection deformation of the upper tie plate; on the other hand, it can fix the friction surface of the damping limit block on one side of the damping limit block and the second shoulder, and improve its anti-wear performance through the wear-resistant plate, ensuring the connection stability of the upper and lower tie plates, eliminating the harm of the deflection deformation of the vibration damping fastener, and thus improving the overall stability of the vibration damping fastener.
[0021] As a further solution of the present utility model: the limiting component is a cover plate arranged on the top of the first shoulder, and the cover plate extends to the top of the damping limit block.
[0022] As a further solution of the present utility model: grooves are respectively arranged on both sides of the bottom of the cover plate, and flanges are respectively arranged on both sides of the top of the first shoulder, and the two flanges are respectively arranged in the two grooves.
[0023] In this embodiment, the damping limit block is made of an elastomer material, preferably made of TPEE material, which can effectively improve the elasticity and flexibility of the damping limit block, so that the fastener system has good vibration damping performance for the received lateral impact load. However, due to the insufficient stiffness and strength of the elastomer material to restrain the second shoulder due to long-term vibration, there is a problem of vertical displacement. Therefore, the limiting component is a cover plate arranged on the top of the first shoulder, the cover plate extends to the top of the damping limit block, grooves are respectively arranged on both sides of the bottom of the cover plate, flanges are respectively arranged on both sides of the top of the first shoulder, and the two flanges are respectively arranged in the two grooves, which can effectively vertically limit the damping limit block and limit the vertical displacement of the second shoulder, improve the connection stability of the upper and lower tie plates, eliminate the harm of the deflection deformation of the vibration damping fastener, and thus improve the overall stability of the vibration damping fastener.
[0024] As a further solution of the present utility model: a plurality of grooves are arranged on one side of the damping limit block close to the first shoulder.
[0025] In this embodiment, by providing a number of grooves on one side of the damping limit block close to the first shoulder, it is possible to effectively reduce the extrusion of the damping limit block when the upper tie plate moves downward. The damping limit block can undergo appropriate deformation through the groove structure, eliminating the influence on the vertical stiffness of the fastener and ensuring the structural stability of the damping limit block. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] For the convenience of those skilled in the art to understand, the following further describes the present utility model with reference to the accompanying drawings.
[0027] Figure 1 FIG. 9 is a schematic structural diagram of the first embodiment of the lower tie plate of a shoulder-type track vibration damping fastener;
[0028] Figure 2 FIG. 13 is a schematic structural diagram of the upper tie plate of a shoulder-type track vibration damping fastener;
[0029] Figure 3 FIG. 17 is a schematic structural diagram of the first embodiment of the damping limit block of a shoulder-type track vibration damping fastener;
[0030] Figure 4 FIG. 21 is a schematic structural diagram of the assembled first embodiment of the damping limit block for a shoulder-type track vibration damping fastener;
[0031] Figure 5 FIG. 25 is a schematic structural diagram of the second embodiment of the lower tie plate of a shoulder-type track vibration damping fastener;
[0032] Figure 6 FIG. 29 is a schematic structural diagram of the cover plate of a shoulder-type track vibration damping fastener;
[0033] Figure 7 FIG. 33 is a schematic structural diagram of the second embodiment of the damping limit block of a shoulder-type track vibration damping fastener;
[0034] Figure 8 FIG. 37 is a schematic structural diagram of the assembled second embodiment of the damping limit block for a shoulder-type track vibration damping fastener.
[0035] REFERENCE MARKS:
[0036] 1, lower tie plate; 11, first shoulder; 111, first bent portion; 112, flange; 2, upper tie plate; 21, second shoulder; 3, damping limit block; 31, wear-resistant plate; 32, second bent portion; 33, shielding portion; 34, groove; 4, nut; 5, cover plate; 51, groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0037] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and cannot be construed as a limitation of the present utility model.
[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. involved in the orientation description is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model.
[0039] In the description of the present utility model, the meaning of several is one or more, the meaning of a plurality is two or more, greater than, less than, exceeding, etc. are understood as not including the recited number, and above, below, within, etc. are understood as including the recited number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0040] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above terms in the present utility model in combination with the specific content of the technical solution.
[0041] In order to make the purpose, technical solution and advantages of the present utility model more clear, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.
[0042] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings below is not intended to limit the scope of the present utility model claimed, but only represents selected embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.
[0043] As Figure 1-8As shown in the embodiment of the present utility model, a damping limit block for a shoulder-type track vibration damping fastener includes: a fastener body, the fastener body includes a lower iron backing plate 1 and an upper iron backing plate 2; first shoulders 11 are respectively arranged at both ends of the lower iron backing plate 1, and second shoulders 21 that cooperate with the first shoulders 11 are respectively arranged at both ends of the upper iron backing plate 2; a damping limit block 3 is arranged between the first shoulder 11 and the second shoulder 21; a wear-resistant plate 31 is arranged on one side of the damping limit block 3 close to the second shoulder 21; a limiting member is arranged on the first shoulder 11 for limiting the vertical displacement of the upper iron backing plate 2.
[0044] Specifically, for the damping limit block of the shoulder-type track vibration damping fastener, the damping limit block 3 is arranged between the first shoulder 11 and the second shoulder 21, and a limiting member is arranged on the first shoulder 11 for limiting the vertical displacement of the upper iron backing plate 2. Through the limiting member, the vertical constraint effect of the upper iron backing plate 2 can be effectively enhanced, and the situation that the gap is generated between the first shoulder 11 and the second shoulder 21 due to long-term wear, resulting in the reduction of the vibration damping effect or the failure of the vibration damping, can be eliminated, ensuring the stability and reliability of the connection between the first shoulder 11 and the second shoulder 21; at the same time, the vibration and noise generated during the operation of the rail transit are effectively reduced, the long-term operation stability and comfort of the rail transit are improved, and the maintenance cost is reduced.
[0045] As Figure 1-3 shown, first bending portions 111 are respectively arranged on both sides of the first shoulder 11, second bending portions 32 are respectively arranged on both sides of the damping limit block 3, and the outer side walls on both sides of the second bending portion 32 are respectively abutted against the inner side walls on both sides of the first bending portion 111; both sides of the second shoulder 21 are respectively abutted against the inner side walls on both sides of the second bending portion 32.
[0046] Specifically, since first bending portions 111 are respectively arranged on both sides of the first shoulder 11, second bending portions 32 are respectively arranged on both sides of the damping limit block 3, the outer side walls on both sides of the second bending portion 32 are respectively abutted against the inner side walls on both sides of the first bending portion 111, and both sides of the second shoulder 21 are respectively abutted against the inner side walls on both sides of the second bending portion 32, the second shoulder 21 is clamped in the damping limit block 3, and the damping limit block 3 is clamped in the first shoulder 11, which can effectively limit the longitudinal and transverse displacements of the upper iron backing plate 2 along the rail, ensure the stability and reliability of the connection between the upper iron backing plate 2 and the lower iron backing plate 1, improve the constraint effect on the longitudinal and transverse displacements of the upper iron backing plate 2 along the rail, and the combined wedge-shaped structure corresponding to the shoulder positions of the upper and lower iron backing plates enables the damping limit block 3 to eliminate the fitting gap between the first shoulder 11 and the second shoulder 21 due to production tolerances or long-term wear, making the contact between the first shoulder 11 and the second shoulder 21 closer, and improving the overall stability of the overall structure of the fastener.
[0047] As Figure 3As shown in the figure, a shielding portion 33 is provided at the top of the damping limiting block 3, and the top of the second shoulder 21 abuts against the inner side wall of the shielding portion 33.
[0048] Specifically, since a shielding portion 33 is provided at the top of the damping limiting block 3 and the top of the second shoulder 21 abuts against the inner side wall of the shielding portion 33, it can effectively prevent the vertical displacement of the upper tie plate 2, further ensuring the stability and reliability of the connection between the upper tie plate 2 and the lower tie plate 1, improving the limiting effect on the vertical displacement of the upper tie plate 2, and making the overall performance of the fastener system more stable and reliable.
[0049] As Figure 4 shown in the figure, in the first embodiment of the present invention, the limiting component is a nut 4 provided on one side of the first shoulder 11, and the nut 4 passes through the first shoulder 11 and is connected to the damping limiting block 3.
[0050] Specifically, in this embodiment, the damping limiting block 3 is made of a high-strength insulating material, preferably made of glass fiber reinforced nylon 66. Since the limiting component is a nut 4 provided on one side of the first shoulder 11, and the nut 4 passes through the first shoulder 11 and is connected to the damping limiting block 3, it can effectively mechanically limit the damping limiting block 3. On the one hand, it can provide a limiting effect on the upward displacement of the upper tie plate 2 caused by deflection deformation; on the other hand, it can fix the friction surface of the damping limiting block 3 on one side of the damping limiting block 3 and the second shoulder 21, and improve its anti-wear performance through the wear-resistant plate 31, ensuring the connection stability of the upper and lower tie plates, eliminating the harm of deflection deformation of this vibration damping fastener, and thus improving the overall stability of this vibration damping fastener.
[0051] As Figure 5-8 shown in the figure, in the second embodiment of the present invention, the same parts as the previous embodiment will not be described again. The difference of this embodiment is that the limiting component is a cover plate 5 provided on the top of the first shoulder 11, and the cover plate 5 extends to the top of the damping limiting block 3; two grooves 51 are respectively provided on both sides of the bottom of the cover plate 5, and two flanges 112 are respectively provided on both sides of the top of the first shoulder 11, and the two flanges 112 are respectively arranged in the two grooves 51.
[0052] Specifically, in this embodiment, the damping limit block 3 is made of an elastomer material, preferably TPEE material, which can effectively improve the elasticity and flexibility of the damping limit block 3, enable it to return to its original state after being impacted by the vibration of the shoulder, and ensure the stable performance of the damping limit block 3. However, since the stiffness and strength of the elastomer material are not sufficient to restrain the vertical displacement of the second shoulder 21 due to long-term vibration, the limiting component is a cover plate 5 arranged on the top of the first shoulder 11. The cover plate 5 extends to the top of the damping limit block 3. Grooves 51 are respectively arranged on both sides of the bottom of the cover plate 5, and flanges 112 are respectively arranged on both sides of the top of the first shoulder 11. The two flanges 112 are respectively arranged in the two grooves 51, which can effectively limit the vertical position of the damping limit block 3 and restrict the vertical displacement of the second shoulder 21, improve the connection stability of the upper and lower tie plates, eliminate the harm of deflection and deformation of the vibration damping fastener, and thus enhance the overall stability of the vibration damping fastener.
[0053] Further, as Figure 5 shown, a plurality of grooves 34 are arranged on the side of the damping limit block 3 close to the first shoulder 11.
[0054] Specifically, by arranging a plurality of grooves 34 on the side of the damping limit block 3 close to the first shoulder 11, when the upper tie plate 2 moves downward, the extrusion of the damping limit block 3 can be effectively reduced. The damping limit block 3 can generate appropriate deformation through the groove 34 structure, eliminate the influence on the vertical stiffness of the fastener, and ensure the structural stability of the damping limit block 3.
[0055] The above content is only an example and description of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all belong to the protection scope of the present invention.
Claims
1. A damping limit block for a shoulder-type track vibration damping fastener, characterized in that, Comprising: A fastener body, the fastener body including a lower iron backing plate (1) and an upper iron backing plate (2); First shoulders (11) are respectively arranged at two ends of the lower iron backing plate (1), and second shoulders (21) that cooperate with the first shoulders (11) are respectively arranged at two ends of the upper iron backing plate (2); A damping limit block (3) is arranged between the first shoulder (11) and the second shoulder (21); A wear-resistant plate (31) is arranged on one side of the damping limit block (3) close to the second shoulder (21); A limiting component is arranged on the first shoulder (11) for limiting the vertical displacement of the upper iron backing plate (2).
2. The damping limit block for the shoulder-type track vibration damping fastener according to claim 1, characterized in that, First bending parts (111) are respectively arranged on two sides of the first shoulder (11), second bending parts (32) are respectively arranged on two sides of the damping limit block (3), and the outer side walls on two sides of the second bending parts (32) are respectively abutted against the inner side walls on two sides of the first bending parts (111).
3. The damping limit block for the shoulder-type track vibration damping fastener according to claim 2, characterized in that, Two sides of the second shoulder (21) are respectively abutted against the inner side walls on two sides of the second bending parts (32).
4. The damping limit block for the shoulder-type track vibration damping fastener according to claim 3, characterized in that, A shielding part (33) is arranged on the top of the damping limit block (3), and the top of the second shoulder (21) is abutted against the inner side wall of the shielding part (33).
5. The damping limit block for the shoulder-type track vibration damping fastener according to claim 4, characterized in that, The limiting component is a nut (4) arranged on one side of the first shoulder (11), and the nut (4) penetrates through the first shoulder (11) and is connected to the damping limit block (3).
6. The damping limit block for the shoulder-type track vibration damping fastener according to claim 4, characterized in that, The limiting component is a cover plate (5) arranged on the top of the first shoulder (11), and the cover plate (5) extends to the top of the damping limit block (3).
7. The damping limit block for the shoulder-type track vibration damping fastener according to claim 6, characterized in that, Grooves (51) are respectively arranged on two sides of the bottom of the cover plate (5), flanges (112) are respectively arranged on two sides of the top of the first shoulder (11), and the two flanges (112) are respectively arranged in the two grooves (51).
8. The damping limit block for shoulder-type track vibration damping fasteners according to claim 7, characterized in that, A plurality of grooves (34) are arranged on one side of the damping limit block (3) close to the first shoulder (11).