Embedded vibration absorption damping fastener system

Abstract

The invention relates to the technical field of rail fasteners, in particular to an embedded vibration absorption damping fastener system which comprises an elastic buckling and pressing piece and a first damper, one end of the first damper is arranged to be a buckling and pressing piece fixing end, and the other end of the first damper is arranged to be a buckling and pressing piece fixing end. The buckling and pressing piece fixing end is fixedly connected with the middle of the elastic buckling and pressing piece, and the other end of the first damper is arranged to be a damper fixing end. According to the embedded vibration absorption damping fastener system, the first damper is arranged and fixedly connected with the elastic buckling and pressing piece, so that when the elastic buckling and pressing piece vibrates towards a track, vibration can be transmitted to the first damper, and the first damper consumes energy generated by vibration; energy, transmitted to the sleeper through the elastic buckling and pressing piece, of vibration of the track is reduced, and vibration is prevented from being continuously spread or amplified through the sleeper; due to the fact that vibration energy is consumed by the first damper, the service life of the elastic buckling and pressing piece is greatly prolonged; and the loosening risk of the elastic buckling piece is also reduced.

Description

Technical Field

[0001] The invention relates to the technical field of railway track fasteners, and in particular to an embedded vibration absorbing and damping fastener system. Background Art

[0002] Rail fasteners are important components in railway and rail transit systems, used to fix rails to sleepers or other sub-rail foundations and ensure the stability and reliability of the track.

[0003] Rail fasteners are mainly composed of rail clamps, rail pads and other auxiliary components. Rail clamps include spring bars, spiral spikes, gauge baffles and baffle seats, which are used to clamp rails and maintain the track gauge; rail pads are usually made of rubber pads or composite pads, which mainly provide elastic buffering to reduce vibration and impact during train operation; other auxiliary components include bolts, nuts, flat washers, height adjustment pads and embedded sleeves, which are used to connect, fix and adjust the various components of the fastener system to ensure its overall stability and reliability.

[0004] With the rapid development of railway construction, especially the large-scale construction of urban rail transit, the impact of vibration and noise caused by train operation on the environment and residents along the line has attracted increasing attention. However, existing rail fasteners usually use the under-rail pad to reduce the vibration of the rails, which is difficult to meet the current vibration and noise control standards. Summary of the invention

[0005] Existing rail fasteners usually reduce the vibration of rails through the underlay under the rail, but this method is difficult to meet the current vibration and noise control standards.

[0006] In view of this, the present invention provides an embedded vibration absorbing and damping fastener system, including an elastic fastening member and a first damper, one end of the first damper is set as a fastening member fixed end, the fastening member fixed end is fixedly connected to the middle part of the elastic fastening member, and the other end of the first damper is set as a damper fixed end.

[0007] Preferably, a damping generating portion is provided between the fixing end of the buckling piece and the fixing end of the damper.

[0008] Preferably, the damping generating part includes one or more of hydraulic damping, spring damping or viscous damping.

[0009] Preferably, the damping generating part is hydraulic damping, and the damping generating part comprises a cylinder and a piston moving axially along the cylinder, a damping hole is provided on the piston, and the fixed end of the buckling piece or the fixed end of the damper is connected to the piston.

[0010] Preferably, the fixed end of the buckling piece is fixedly connected to the elastic buckling piece through a first fixing piece and a second fixing piece, and the first fixing piece and the second fixing piece are respectively arranged on both sides of the elastic buckling piece.

[0011] Preferably, the elastic buckling member includes a rail fixing portion, a sleeper fixing portion and a connecting portion located between the rail fixing portion and the sleeper fixing portion, and the connecting portion is fixedly connected to the first damper.

[0012] Preferably, the connecting portion is bent upward relative to the rail fixing portion and the sleeper fixing portion.

[0013] Preferably, the embedded vibration absorbing and damping fastener system also includes a second damper, the second damper includes an elastic cavity, a storage space is formed in the elastic cavity, the storage space is filled with solid particles, and the elastic cavity is arranged on the end face of the rail fixing part.

[0014] Preferably, the second damper further includes a structural reinforcement member, and the structural reinforcement member is implanted in the elastic cavity, or the structural reinforcement member wraps the elastic cavity.

[0015] Preferably, the sleeper fixing portion is a strip structure, a fixing column is provided on the sleeper fixing portion, and a particle damper is sleeved on the outer periphery of the fixing column.

[0016] The elastic clamps in the prior art can only fix the track. When facing the vibration from the track, most of the energy generated by the vibration needs to be absorbed by the elastic deformation of the elastic clamps. The elastic clamps will not only further transmit the vibration to the sleepers and further spread the vibration, but also cause the elastic clamps to produce metal fatigue prematurely, resulting in the risk of fracture. In addition, the vibration of the elastic clamps will also cause the nut fixing the elastic clamps to loosen. The embedded vibration absorbing and damping fastener system provided by the present invention is provided with a first damper, and the first damper is fixedly connected to the elastic clamp, so that when facing the vibration of the track, the elastic clamp can transmit the vibration to the first damper, and the first damper consumes the energy generated by the vibration, reducing the energy of the vibration of the track transmitted to the sleepers through the elastic clamps, and preventing the vibration from continuing to spread or amplify through the sleepers; because the energy of the vibration is consumed by the first damper, the service life of the elastic clamps is greatly improved; at the same time, the risk of the elastic clamps loosening is also reduced.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] In the attached picture:

[0020] Figure 1 This is a schematic diagram of installing an embedded vibration absorbing and damping fastener system according to an embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of an embedded vibration absorbing and damping fastener system according to an embodiment of the present invention;

[0022] Figure 3 A bottom view of an elastic buckling member according to an embodiment of the present invention;

[0023] Figure 4 A structural cross-sectional view of a first damper according to an embodiment of the present invention;

[0024] Figure 5 A structural cross-sectional view of a second damper according to an embodiment of the present invention;

[0025] Figure 6 A bottom view of a second damper according to an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1 elastic buckle 2 first damper

[0028] 3 Second damper 4 Particle damper

[0029] 11 Rail fixing part 12 Sleeper fixing part

[0030] 13 connecting portion 21 buckle fixing end

[0031] 22 damper fixed end 23 damping generating part

[0032] 24 first fixing member 25 second fixing member

[0033] 31 elastic cavity 32 solid particles

[0034] 33 structural reinforcement 121 fixed column

[0035] 231 cylinder 232 piston

[0036] 233 Damping hole DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", "third", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] After research, it was found that wheel-rail noise is caused by the interaction between the wheel and the rail, which radiates sound waves outward. In order to reduce the mutual vibration between the wheel and the rail, the present invention provides an embedded vibration absorbing and damping fastener system, such as Figures 1 to 4 As shown, it includes an elastic buckling member 1 and a first damper 2, the first damper 2 reduces the vibration of the elastic buckling member 1 by the damping generated internally, one end of the first damper 2 is set as a buckling member fixed end 21, the buckling member fixed end 21 is fixedly connected to the middle part of the elastic buckling member 1, the elastic buckling member 1 drives the buckling member fixed end 21 to vibrate synchronously, so that the vibration of the elastic buckling member 1 can be transmitted to the first damper 2, the other end of the first damper 2 is set as a damper fixed end 22, the damper fixed end 22 is used to fix the first damper 2, specifically, the damper fixed end 22 can be used to fix the first damper 2 to the sleeper.

[0041] The elastic buckle 1 in the prior art can only achieve the function of fixing the track. When facing the vibration from the track, most of the energy generated by the vibration needs to be absorbed by the elastic deformation of the elastic buckle 1. The elastic buckle 1 will not only further transmit the vibration to the sleeper and further spread the vibration, but also cause the elastic buckle 1 to produce metal fatigue prematurely, resulting in the risk of fracture. In addition, the vibration of the elastic buckle 1 will also cause the risk of the nut fixing the elastic buckle 1 to loosen. The embedded vibration absorbing and damping fastener system provided by the present invention is provided with a first damper 2 and the first damper 2 is fixedly connected to the elastic buckle 1, so that the elastic buckle 1 can transmit the vibration to the first damper 2 when facing the vibration of the track, and the first damper 2 consumes the energy generated by the vibration, reducing the energy of the vibration of the track transmitted to the sleeper through the elastic buckle 1, and preventing the vibration from continuing to spread or amplify through the sleeper; because the energy of the vibration is consumed by the first damper 2, the service life of the elastic buckle 1 is also greatly improved; at the same time, the risk of the elastic buckle 1 loosening is also reduced. At the same time, the first damper 2 can also replace the bolts used to fix the elastic buckling member 1 in the prior art, while achieving vibration reduction without increasing the complexity of the system and the difficulty of installation.

[0042] In the prior art, the elastic buckle 1 is usually fixed to the sleeper by bolts. At this time, it can be considered that the bolts play a fixing role on the elastic buckle 1, and it cannot be considered that the bolts are fixedly connected to the elastic buckle 1. The fixed connection between the buckle fixed end 21 and the middle part of the elastic buckle 1 described in the present application refers to the relative fixation between the buckle fixed end 21 and the elastic buckle 1. This fixed state is not only reflected when the embedded vibration absorbing and damping fastener system is installed on the track, but also when the embedded vibration absorbing and damping fastener system is not installed on the track. In the above, the fixed connection between the buckle fixed end 21 and the middle part of the elastic buckle 1 does not necessarily mean that the buckle fixed end 21 and the elastic buckle 1 are not removable, but means that the buckle fixed end 21 and the elastic buckle 1 can have a fixed connection state. Therefore, the buckle fixed end 21 and the elastic buckle 1 can be set as an integral whole or as a separate body.

[0043] In order to consume vibration energy, a damping generating part 23 is provided between the buckle fixing end 21 and the damper fixing end 22. Such a setting enables the buckle fixing end 21 to receive vibration from the elastic buckle 1, and the buckle fixing end 21 transmits the vibration to the damping generating part 23, and the damping generating part 23 converts the vibration into other forms of consumption; after being consumed by the damping generating part 23, the damper fixing end 22 almost does not receive any vibration from the elastic buckle 1, so that the damper fixing end 22 cannot transmit the vibration to the sleeper, and then the damping generating part 23 isolates the vibration from the elastic buckle 1.

[0044] In the above, the damping generating part 23 includes one or more of hydraulic damping, spring damping or viscous damping. The present application does not limit the specific action form of the damping generating part 23, as long as the damping generating part 23 can consume vibration energy.

[0045] According to one implementation of the present application, Figure 4 As shown, the damping generating part 23 is a hydraulic damping, and the damping generating part 23 includes a cylinder 231 and a piston 232 that moves axially along the cylinder 231. The cylinder 231 is filled with fluid, and a damping hole 233 is provided on the piston 232. The clamping member fixed end 21 or the damper fixed end 22 is connected to the piston 232. When the piston 232 moves, the fluid in the cylinder 231 passes through the damping hole 233, thereby generating a damping effect, thereby absorbing energy. Preferably, the clamping member fixed end 21 is connected to the piston 232, and when the elastic clamping member 1 vibrates, the clamping member fixed end 21 is driven to vibrate, thereby driving the piston 232 to move. In the above, the fluid includes gas and liquid, and preferably, the gas is liquid.

[0046] In order to achieve the fixation between the fixing end 21 of the buckling piece and the elastic buckling piece 1, as shown in FIG. Figure 1 As shown, the fixing end 21 of the buckling member is fixedly connected to the elastic buckling member 1 through the first fixing member 24 and the second fixing member 25, and the first fixing member 24 and the second fixing member 25 are respectively arranged on both sides of the elastic buckling member 1. Such an arrangement enables the elastic buckling member 1 to drive the fixing end 21 of the buckling member to vibrate synchronously, thereby improving the vibration reduction effect of the first damper 2. In the above, the first fixing member 24 or the second fixing member 25 can be set as a nut or a rivet.

[0047] In order to absorb vibration from the track, the elastic buckling member 1 includes a track fixing portion 11 , a sleeper fixing portion 12 and a connecting portion 13 located between the track fixing portion 11 and the sleeper fixing portion 12 , and the connecting portion 13 is fixedly connected to the first damper 2 .

[0048] In order to enable the elastic buckling member 1 to efficiently receive vibration from the track, the connecting portion 13 is bent upward relative to the track fixing portion 11 and the sleeper fixing portion 12. Further, the elastic buckling member 1 includes a buckling plate and an elastic bar. Preferably, the elastic buckling member 1 is a buckling plate, and the track fixing portion 11 is a strip structure, thereby increasing the contact area between the elastic buckling member 1 and the track.

[0049] In order to improve the noise reduction performance of the embedded vibration absorbing and damping fastener system, the embedded vibration absorbing and damping fastener system further includes a second damper 3, such as Figure 5 , Figure 6 As shown, considering the specific installation position and use scenario of the second damper 3, the second damper 3 includes an elastic cavity 31, a storage space is formed in the elastic cavity 31, and the storage space is filled with solid particles 32. The elastic cavity 31 is arranged on the end surface of the track fixing part 11. Specifically, the material of the elastic cavity 31 includes rubber or polyurethane, and the solid particles 32 include lead particles. When the embedded vibration absorbing and damping fastener system is installed, the second damper 3 is arranged between the elastic buckle 1 and the track. The vibration from the track first passes through the second damper 3, and the second damper 3 consumes part of the vibration energy and then transmits the vibration to the elastic buckle 1. In the present application, on the one hand, since the cavity of the second damper 3 is elastic, the vibration and friction noise generated by the track and the elastic buckle 1 under high-frequency vibration in the prior art are reduced; on the other hand, the solid particles 32 in the second damper 3 collide and rub against each other under the excitation of vibration, and the energy of vibration is consumed, thereby achieving a vibration reduction effect.

[0050] In the above, in order to improve the compression resistance of the second damper 3, the second damper 3 also includes a structural reinforcement 33, and the structural reinforcement 33 is implanted in the elastic cavity 31, or the structural reinforcement 33 wraps the elastic cavity 31. Specifically, the structural reinforcement 33 includes a steel wire rope, and the steel wire rope is implanted in the elastic cavity 31.

[0051] Further, in order to achieve the fixation between the second damper 3 and the elastic buckling member 1, a clamping structure is provided between the second damper 3 and the elastic buckling member 1, and the clamping structure includes a first clamping member and a second clamping member, the first clamping member is fixed to the track fixing portion 11, and the second clamping member is fixed to the second damper 3. Specifically, the structural reinforcement member 33 passes through the second clamping member and fixes the second clamping member to the elastic cavity 31. Preferably, the clamping structure includes a dovetail groove and a dovetail tenon.

[0052] In order to further reduce the noise reduction effect of the embedded vibration absorbing and damping fastener system, the sleeper fixing part 12 is a strip structure, and a fixing column 121 is provided on the sleeper fixing part 12. The outer periphery of the fixing column 121 is sleeved with a particle damper 4. The particle damper 4 includes a hollow cylindrical cavity, and the hollow cylindrical cavity is filled with solid particles 32. The setting of the particle damper 4 can effectively reduce the vibration transmitted from the sleeper fixing part 12 to the sleeper. At the same time, the setting of the fixing column 121 and the particle damper 4 can keep the position of the elastic buckling member 1 unchanged, thereby improving the operation stability of the track control system.

[0053] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0054] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0055] In the several embodiments provided by the present invention, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An embedded vibration absorbing and damping fastener system, characterized in that: It comprises an elastic buckling piece (1) and a first damper (2), wherein one end of the first damper (2) is arranged as a buckling piece fixed end (21), the buckling piece fixed end (21) is fixedly connected to the middle part of the elastic buckling piece (1), and the other end of the first damper (2) is arranged as a damper fixed end (22).

2. The embedded vibration absorbing and damping fastener system according to claim 1, characterized in that: A damping generating portion (23) is provided between the buckling piece fixed end (21) and the damper fixed end (22).

3. The embedded vibration absorbing and damping fastener system according to claim 1, characterized in that: The damping generating part (23) includes one or more of hydraulic damping, spring damping or viscous damping.

4. The embedded vibration absorbing and damping fastener system according to claim 3, characterized in that: The damping generating part (23) is hydraulic damping, and comprises a cylinder (231) and a piston (232) that moves axially along the cylinder (231); a damping hole (233) is provided on the piston (232); and the buckling piece fixed end (21) or the damper fixed end (22) is connected to the piston (232).

5. The embedded vibration absorbing and damping fastener system according to claim 1, characterized in that: The fixing end (21) of the buckling piece is fixedly connected to the elastic buckling piece (1) via a first fixing piece (24) and a second fixing piece (25), and the first fixing piece (24) and the second fixing piece (25) are respectively arranged on both sides of the elastic buckling piece (1).

6. The embedded vibration absorbing and damping fastener system according to claim 1, characterized in that: The elastic buckling member (1) comprises a track fixing portion (11), a sleeper fixing portion (12), and a connecting portion (13) located between the track fixing portion (11) and the sleeper fixing portion (12), wherein the connecting portion (13) is fixedly connected to the first damper (2).

7. The embedded vibration absorbing and damping fastener system according to claim 6, characterized in that: The connecting portion (13) is bent upward relative to the rail fixing portion (11) and the sleeper fixing portion (12).

8. The embedded vibration absorbing and damping fastener system according to claim 6, characterized in that: The embedded vibration absorbing and damping fastener system further comprises a second damper (3), the second damper (3) comprising an elastic cavity (31), a storage space being formed in the elastic cavity (31), the storage space being filled with solid particles (32), and the elastic cavity (31) being arranged on the end surface of the track fixing portion (11).

9. The embedded vibration absorbing and damping fastener system according to claim 8, characterized in that: The second damper (3) further comprises a structural reinforcement (33), wherein the structural reinforcement (33) is implanted in the elastic cavity (31), or the structural reinforcement (33) wraps the elastic cavity (31).

10. The embedded vibration absorbing and damping fastener system according to claim 6, characterized in that: The sleeper fixing part (12) is a strip-shaped structure, a fixing column (121) is arranged on the sleeper fixing part (12), and a particle damper (4) is sleeved on the outer periphery of the fixing column (121).

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