Self-centering friction damper

Abstract

The application discloses a self-resetting friction damper in the technical field of bridge shock absorption, and specifically comprises a first connecting mechanism and a second connecting mechanism, wherein the second connecting mechanism is inserted into the first connecting mechanism; a buffer assembly is arranged in the first connecting mechanism, an energy dissipation assembly is arranged in the second connecting mechanism, the buffer assembly is at least partially inserted into the second connecting mechanism and abuts against the energy dissipation assembly, and the buffer assembly is in sliding connection with the second connecting mechanism. The application consumes the received vibration energy through the buffer stroke formed by the insertion of the second connecting mechanism into the first connecting mechanism, and increases the vibration energy consumption speed through the cooperation of the energy dissipation assembly and the buffer assembly, so that the damper can more stably and effectively continuously complete the vibration buffering and shock absorption work.

Description

Technical Field

[0001] This application relates to the field of bridge vibration reduction technology, and in particular to a self-resetting friction damper. Background Technology

[0002] Dampers are crucial components on bridges used to enhance safety during earthquakes. When a bridge experiences seismic activity, excessive plastic deformation can lead to increased costs for subsequent reinforcement and maintenance, or even complete loss of usability. Therefore, dampers are needed to dissipate seismic energy, thereby reducing structural damage to the bridge.

[0003] In related technologies, dampers dissipate vibration energy through the buffering capacity of a single spring structure. A single spring structure needs to continuously expand and contract to buffer the vibration after it is subjected to shock. However, earthquakes may have multiple aftershocks, and a single spring structure can hardly maintain a high buffering capacity when dealing with aftershocks. Utility Model Content

[0004] This application discloses a self-resetting friction damper to solve the technical problem in related technologies where the single spring structure of the damper in bridge vibration reduction has a weak ability to cope with aftershocks after an earthquake.

[0005] To solve the above problems, this application adopts the following technical solution: This application provides a self-resetting friction damper, specifically including a first connecting mechanism and a second connecting mechanism, wherein the second connecting mechanism is inserted into the first connecting mechanism; The first connecting mechanism is provided with a buffer component, and the second connecting mechanism is provided with an energy dissipation component. The buffer component is at least partially inserted into the second connecting mechanism and abuts against the energy dissipation component. The buffer component is slidably connected to the second connecting mechanism.

[0006] Furthermore, the energy-consuming component includes several butterfly springs, which are arranged overlappingly along the axis of the second connecting mechanism. The end of the buffer component is inserted into the second connecting mechanism and abuts against the butterfly springs.

[0007] Furthermore, the second connecting mechanism has a shaft hole with a diameter that matches the outer diameter of the disc spring, and the end of the buffer assembly that abuts against the disc spring is inserted into the shaft hole.

[0008] Furthermore, the buffer assembly includes a connecting tube, inside which a telescopic rod is fitted. One end of the telescopic rod is connected to the connecting tube via a compression spring, and the other end passes through the energy dissipation assembly and abuts against the second connecting mechanism. The end of the connecting pipe abuts against the energy-consuming component.

[0009] Furthermore, the end of the second connecting mechanism inserted into the first connecting mechanism is fixed with an annular limiting block, which accommodates the passage of the connecting pipe; A push block is fixed to the end of the connecting pipe that is inserted into the second connecting mechanism, and the push block abuts against the energy-consuming component.

[0010] Furthermore, the pusher is a ring plate sleeved outside the connecting pipe, and the ring plate is coaxially arranged with the connecting pipe.

[0011] Furthermore, the first connecting mechanism includes a first tube body, and the second connecting mechanism includes a second tube body, with the second tube body at least partially inserted into the first tube body; The end of the first pipe that is away from the second pipe is sealed, and the end of the second pipe that is away from the first pipe is sealed.

[0012] Furthermore, the outer wall of the portion of the second tube inserted into the first tube is fitted with the inner wall of the first tube.

[0013] Furthermore, the end of the first tube body facing away from the second tube body is provided with a first connecting block, and the end of the second tube body facing away from the first tube body is provided with a second connecting block; Several anchor rods are fixed on both the first connecting block and the second connecting block. The anchor rods on the first connecting block are inserted into and anchored in the first pipe body, and the anchor rods on the second connecting block are inserted into and anchored in the second pipe body.

[0014] Furthermore, both the first connecting block and the second connecting block are provided with several reinforcing plates. The two ends of the reinforcing plates on the first connecting block are fixedly connected to the first connecting block and the first pipe body, respectively. The two ends of the reinforcing plates on the second connecting block are fixedly connected to the second connecting block and the second pipe body, respectively.

[0015] The technical solution adopted in this application can achieve the following beneficial effects: When related technologies utilize a single spring structure to buffer and reduce vibration in a damper-connected structure, it is necessary to wait for the spring structure to gradually expand and contract to dissipate the vibration energy. Therefore, after receiving a vibration, sufficient time is required to return to the original state, during which time the buffering and damping capacity weakens. In this embodiment, the self-resetting friction damper, to improve its ability to resist continuous vibration, incorporates buffering and energy-dissipating components in the first and second connecting mechanisms respectively. These components rapidly dissipate the vibration energy received upon receiving a vibration, enabling the self-resetting friction damper to efficiently return to its original state and provide effective buffering and damping when subsequently subjected to continuous vibration. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the self-resetting friction damper disclosed in the embodiments of this application; Figure 2 This is a cross-sectional view of the self-resetting friction damper disclosed in the embodiments of this application; Figure 3 This is the embodiment disclosed in this application. Figure 2 A magnified view of part A in the middle.

[0018] In the picture: 1. First connecting mechanism; 11. First connecting block; 12. First tube body; 2. Second connecting mechanism; 21. Second connecting block; 22. Second tube body; 221. Shaft hole; 23. Annular limiting block; 31. Buffer assembly; 311. Connecting pipe; 312. Telescopic rod; 32. Energy dissipation assembly; 321. Butterfly spring; 33. Push block; 4. Anchor rod; 5. Reinforcing plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In the field of bridge vibration reduction technology, dampers enhance the seismic resistance and post-earthquake recovery capacity of bridge structures or components through their own buffering and damping capabilities. A single-spring damper, upon being subjected to vibration impact, can only dissipate the vibrational energy through its own expansion and contraction, thus achieving a buffering and damping effect. When the vibrational energy cannot be dissipated in a single expansion and contraction, the single-spring structure needs to continuously expand and contract to gradually dissipate the vibrational energy. If aftershocks or other vibrations occur during this process, the buffering capacity of the single-spring structure will decrease sharply, thus failing to effectively mitigate the damage to the structure connected to the damper.

[0022] The inventors, through their research, discovered that related damping technologies typically rely on improvements to a single spring structure. This single spring structure is usually a tension spring or a compression spring. The inventors found that the reason for the reduced buffering capacity after the initial vibration is mainly due to the low energy dissipation efficiency of the vibration energy.

[0023] For example, when an earthquake occurs, the damper, affected by the vibration, begins to dissipate the vibration energy through the expansion and contraction of its springs. However, the damper requires multiple expansions and contractions to complete this dissipation. When aftershocks arrive, the spring structure within the damper is still in a state of expansion and contraction. The vibration acting on the damper is affected by the position of the spring's expansion and contraction stroke, preventing the damper from effectively buffering the vibration energy. The vibration energy that has not been buffered by the damper acts directly on the bridge structure, causing compression and resistance between the various structures, equipment, or components of the bridge, thus posing a risk of damage to the bridge structure.

[0024] The following is in conjunction with the appendix Figures 1 to 3 The self-resetting friction damper provided in this application will be described in detail through specific embodiments and application scenarios.

[0025] Please see Figure 1 As shown in the illustration, this application discloses a self-resetting friction damper, specifically including a first connecting mechanism 1 and a second connecting mechanism 2, with the second connecting mechanism 2 inserted into the first connecting mechanism 1. The first connecting mechanism 1 and the second connecting mechanism 2 are respectively used to connect different components requiring damping. By inserting the second connecting mechanism 2 into the first connecting mechanism 1, the space occupied by the first connecting mechanism 1 and the second connecting mechanism 2 is reduced. The second connecting mechanism 2 can extend and retract within the first connecting mechanism 1, thereby obtaining a buffer stroke. The second connecting mechanism 2 can utilize the first connecting mechanism 1 as a guiding structure, and the first connecting mechanism 1 can also utilize the second connecting mechanism 2 as a guiding structure. The mutual guiding capability between the first connecting mechanism 1 and the second connecting mechanism 2 provides a buffer direction and a defined buffer stroke, thereby improving the work efficiency during the damping process and increasing the energy dissipation efficiency of vibration energy.

[0026] The distance between the equipment, structure, or component connected to the first connecting mechanism 1 and the second connecting mechanism 2 is fixed, so the accommodating space of the damper is also fixed. In this embodiment, inserting the second connecting mechanism 2 into the first connecting mechanism 1 can effectively increase the buffer stroke by increasing the distance between the second connecting mechanism and the first connecting mechanism that allows for relative movement, thereby enhancing the buffering and shock absorption capacity of this embodiment. The improved buffering and shock absorption capacity can help reduce the residual deformation of the external structure connected to the first connecting mechanism 1 and the second connecting mechanism 2.

[0027] The low energy efficiency of spring structures in related technologies is mainly because springs rely on elastic natural expansion and contraction to create a buffer and dissipate vibration energy during this process. Please see [link to relevant documentation]. Figure 2 As shown, this embodiment of the application includes a buffer component 31 in the first connecting mechanism 1 and an energy dissipation component 32 in the second connecting mechanism 2. The buffer component 31 is at least partially inserted into the second connecting mechanism 2 and abuts against the energy dissipation component 32, with the buffer component 31 and the second connecting mechanism 2 slidably connected. The buffer component 31 buffers vibrations through elastic expansion and contraction, and the energy dissipation component 32 also dissipates vibration energy through elastic expansion and contraction. The elastic expansion and contraction of the buffer component 31 occurs between the first connecting mechanism 1 and the second connecting mechanism 2, so the elastic force of the buffer component 31 is used to dissipate the mechanical energy of the relative motion between the first connecting mechanism 1 and the second connecting mechanism 2, achieving the purpose of restoring the relative static state of the first connecting mechanism 1 and the second connecting mechanism 2. Because the buffer component 31 is slidably connected to the second connecting mechanism 2, the direction of the elastic expansion and contraction of the buffer component 31 is restricted by the second connecting mechanism 2. The elastic expansion and contraction of the energy dissipation component 32 occurs between the buffer component 31 and the second connecting mechanism 2, so the elastic force of the energy dissipation component 32 can be used to prevent relative motion between the buffer component 31 and the second connecting mechanism 2.

[0028] Taking an earthquake as an example, the first connecting mechanism 1 and the second connecting mechanism 2 are connected to different equipment, structures, or components. When an earthquake occurs, the first connecting mechanism 1 and the second connecting mechanism 2 are subjected to compression from the connected equipment, structures, or components, resulting in relative movement. At this time, the second connecting mechanism 2 expands and contracts into the first connecting mechanism 1, transferring vibrational energy to the buffer assembly 31 through compression during this process. After being compressed by the second connecting mechanism 2, the buffer assembly 31 is inserted into the second connecting mechanism 2. The end of the buffer assembly 31 abuts against the energy dissipation assembly 32, so some of the vibrational energy required for the elastic expansion and contraction of the buffer assembly 31 is transferred to the energy dissipation assembly 32.

[0029] Because the buffer component 31, under the constraint of the first connecting mechanism 1, exerts pressure on the energy dissipation component 32, and the energy dissipation component 32, under the constraint of the second connecting mechanism 2, also pushes against the buffer component 31, the elastic expansion and contraction of the buffer component 31 and the energy dissipation component 32 will exhibit opposing behaviors. This opposing behavior will result in internal energy consumption between the buffer component 31 and the energy dissipation component 32. Based on this, vibration energy can be consumed not only through the elastic expansion and contraction of the buffer component 31 and the energy dissipation component 32, but also through the opposing forces between them, thereby increasing the efficiency of vibration energy consumption.

[0030] If the energy of the initial shock during an earthquake can be consumed more quickly by the embodiments of this application, it can better buffer and reduce the impact of subsequent aftershocks, thereby improving the ability of the embodiments of this application to continuously provide buffering and shock reduction.

[0031] Because both the energy-dissipating component 32 and the buffer component 31 elastically expand and contract during the energy dissipation process, if the elastic expansion and contraction strokes of both components are large, it will take a certain amount of time for them to return to their original state in this embodiment. To further reduce the elastic expansion and contraction time, in some embodiments of this application, the energy-dissipating component 32 includes several butterfly springs 321. The butterfly springs 321 can be made of shape memory alloys using existing technology to improve elastic recovery capability. The several butterfly springs 321 are arranged overlapping along the axis of the second connecting mechanism 2, and the end of the buffer component 31 is inserted into the second connecting mechanism 2 and abuts against the butterfly springs 321. The several butterfly springs 321 overlap each other, and each butterfly spring 321 buffers independently. After receiving vibration energy, the several butterfly springs 321 expand and contract as a whole under the action of the buffer component 31 and the second connecting mechanism 2. During the process of recovering elastic deformation, each butterfly spring 321 will squeeze and rub against each other, thereby rapidly dissipating mechanical energy and playing a role in shock absorption and buffering. Since each butterfly spring 321 is independent, the deformation of a single butterfly spring 321 is small, and the deformation recovery time of a butterfly spring 321 is short. However, the overall buffering capacity formed by several overlapping butterfly springs 321 is sufficient to cope with the relative movement between the first connecting mechanism 1 and the second connecting mechanism 2.

[0032] The energy dissipation component 32, through the overlapping disc springs 321, effectively enhances its elastic recovery capability. After vibration occurs, the internal energy dissipated by the mutual compression and friction between the disc springs 321 allows the energy dissipation component 32 to return to its original state more quickly, enhancing its continuous damping and shock absorption capabilities. The faster the energy dissipation component 32 returns to its original state, the more mechanical energy the damping component 31 can dissipate, thus enabling the damping component 31 to also return to its original state more quickly. When both the energy dissipation component 32 and the damping component 31 can return to their original states more quickly, this embodiment can dissipate vibration energy more efficiently, thereby maintaining excellent vibration damping capabilities. Furthermore, because the disc springs 321 have strong deformation recovery capabilities and stable restoring force, the structural stability and self-resetting capability of the damper can also be effectively improved through the disc springs 321.

[0033] For some embodiments of this application, please refer to Figure 2 As shown, the second connecting mechanism 2 has a shaft hole 221 for accommodating the butterfly spring 321. The diameter of the shaft hole 221 matches the outer diameter of the butterfly spring 321, so the outer contour of the butterfly spring 321 fits against the inner wall of the shaft hole 221. The end of the buffer assembly 31 that abuts against the butterfly spring 321 is inserted into the shaft hole 221. The buffer assembly 31 abuts against the butterfly spring 321 along the axial direction of the shaft hole 221 and compresses the butterfly spring 321 along the axial direction of the shaft hole 221 after vibration occurs. After being compressed, several butterfly springs 321 expand and contract within the shaft hole 221 and compress against each other. The butterfly springs 321 also undergo elastic deformation during expansion and contraction, so there is friction not only between the butterfly springs 321 but also between the butterfly springs 321 and the shaft hole 221. Under the action of frictional resistance, the vibration energy is consumed more quickly during the elastic expansion and contraction of the butterfly springs 321. When the disc spring 321 stops extending or retracting, the energy-consuming component 32 returns to its original state.

[0034] During this process, the buffer assembly 31 begins to elastically expand and contract under the influence of the relative motion of the first connecting mechanism 1 and the second connecting mechanism 2. As the buffer assembly 31 expands and contracts elastically, it pushes and compresses the disc spring 321. The disc spring 321 also reacts by pushing the buffer assembly 31, creating a counterforce between the elastic expansion and contraction of the buffer assembly 31 and the disc spring 321. During this counterforce, vibration energy is dissipated, and the mechanical energy of the buffer assembly 31 is also dissipated through the disc spring 321. This allows the buffer assembly 31 to stop its elastic expansion and contraction more quickly and return to its original state.

[0035] In some embodiments of this application, the buffer assembly 31 includes a connecting pipe 311, within which a telescopic rod 312 is fitted. One end of the telescopic rod 312 is connected to the connecting pipe 311 via a compression spring, and the other end passes through the energy dissipation assembly 32 and abuts against the second connecting mechanism 2. The connecting pipe 311 accommodates the compression spring, and the telescopic rod 312 directly transmits the vibration energy from the second connecting mechanism 2 to the buffer assembly 31. The first connecting mechanism 1 and the connecting pipe 311 move synchronously. In its natural state, the compression spring pushes the telescopic rod 312 outward to abut against the second connecting mechanism 2. When vibration occurs, the second connecting mechanism 2 pushes the telescopic rod 312 inward to compress it into the connecting pipe 311, thereby achieving a buffering effect through the elastic extension and contraction of the compression spring. Under the influence of vibration energy, relative movement occurs between the first connecting mechanism 1 and the second connecting mechanism 2, and the compression spring also dissipates vibration energy through mechanical energy consumption during repeated elastic extension and contraction. The end of the connecting pipe 311 abuts against the energy-dissipating component 32, so when the first connecting mechanism 1 and the second connecting mechanism 2 move relative to each other, the connecting pipe 311 will squeeze and push the energy-dissipating component 32. The elastic expansion and contraction of the energy-dissipating component 32 applies force to the connecting pipe 311 and the second connecting mechanism 2 respectively, thereby using the energy-dissipating component 32 to consume the mechanical energy of the relative movement of the first connecting mechanism 1 and the second connecting mechanism 2.

[0036] Based on the above process, the buffer component 31 and the energy dissipation component 32 can effectively prevent relative movement between the first connecting mechanism 1 and the second connecting mechanism 2 by utilizing the mechanical energy dissipation during the elastic expansion and contraction process. When the first connecting mechanism 1 and the second connecting mechanism 2 are relatively stationary, the vibration energy dissipation is completed. This effectively achieves vibration damping and buffering between the equipment, structures, or components connected by the first connecting mechanism 1 and the second connecting mechanism 2.

[0037] For some embodiments of this application, please refer to Figure 3 As shown, the end of the second connecting mechanism 2 inserted into the first connecting mechanism 1 is fixed with an annular limiting block 23, which accommodates the passage of the connecting pipe 311. The annular limiting block 23 effectively limits the travel range of the energy-consuming component 32, preventing it from detaching from the second connecting mechanism 2. Furthermore, the annular limiting block 23 also guides the connecting pipe 311, ensuring that the movement direction of the buffer component 31 effectively compresses the energy-consuming component 32.

[0038] A pusher block 33 is fixed to the end of the connecting tube 311 inserted into the second connecting mechanism 2, and the pusher block 33 abuts against the energy-consuming component 32. The pusher block 33 effectively increases the contact area between the connecting tube 311 and the energy-consuming component 32, thereby improving the stability of the connecting tube 311 pressing against the energy-consuming component 32. In some embodiments of this application, the pusher block 33 can be configured as a ring or arranged in multiple circumferentially distributed on the outer surface of the connecting tube 311 to further enhance the uniformity and stability of pushing the energy-consuming component 32.

[0039] In some embodiments of this application, the pusher 33 is selected as an annular plate sleeved outside the connecting pipe 311, with the annular plate and the connecting pipe 311 coaxially arranged. The annular pusher 33 allows the connecting pipe 311 to apply force evenly to the energy-dissipating component 32 within the circumferential range. This ensures that the compression stroke of the pusher 33 on the energy-dissipating component 32 is balanced within the circumferential range, avoiding localized deflection of the energy-dissipating component 32 and thus preventing the energy-dissipating component 32 from jamming during elastic expansion and contraction. The coaxial arrangement of the annular plate and the connecting pipe 311 also makes the elastic expansion and contraction process of the energy-dissipating component 32 and the buffer component 31 smoother, preventing structural damage in the embodiments of this application.

[0040] When a disc spring 321 is used, the telescopic rod 312 can pass through the middle of the disc spring 321 and directly contact the second connecting mechanism 2. The telescopic rod 312 can directly transmit the movement of the second connecting mechanism 2 to the compression spring, and the telescopic rod 312 reciprocates within the disc spring 321.

[0041] Based on the constraint of the accommodating space of the disc spring 321 by utilizing the shaft hole 221, if the outer surface of the telescopic rod 312 is in contact with the inner diameter of the disc spring 321 in its natural state, when the disc spring 321 is compressed, the deformation of the disc spring 321 will simultaneously compress the shaft hole 221 and the telescopic rod 312, thus generating friction between the disc spring 321 and the telescopic rod 312 and the shaft hole 221. This friction effectively prevents the elastic expansion and contraction of the buffer component 31 and the energy dissipation component 32 through the consumption of mechanical energy, thereby allowing the compression spring and the disc spring 321 to return to their natural state more quickly, achieving a more efficient return of the damper to its original state. The damper's return to its original state allows it to better cope with subsequent vibrations occurring at the first connecting mechanism 1 and the second connecting mechanism 2.

[0042] Please see Figure 2As shown, in some embodiments of this application, the first connecting mechanism 1 includes a first tube 12, and the second connecting mechanism 2 includes a second tube 22, with the second tube 22 at least partially inserted into the first tube 12. The second tube 22 is slidably disposed within the first tube 12, forming a state where the second tube 22 is at least partially inserted into the first tube 12. This effectively utilizes the expansion and contraction stroke of the second tube 22 within the first tube 12 to accommodate the elastic expansion and contraction stroke of the buffer assembly 31 and the energy dissipation assembly 32. This transmits the relative motion between the first connecting mechanism 1 and the second connecting mechanism 2 to the buffer assembly 31 and the energy dissipation assembly 32. Because in bridge structures, the influence of vibration limits the predictable direction of relative motion of equipment, components, or structures. Examples include relative motion between the beam and the pier in the longitudinal direction, and relative motion of beams pressing against each other at joints. Therefore, the main direction of the relative motion between the first connecting mechanism 1 and the second connecting mechanism 2 faced by the damper during this process can be determined. At this time, the second tube 22 is guided by the first tube 12, and the first tube 12 is also guided by the second tube 22, so that the direction of the buffer stroke is limited to the axial direction of the first tube 12 and the second tube 22. When installing, the axial direction of the first tube 12 and the second tube 22 is set in the direction that needs to be buffered, which can improve the efficiency of the buffering effect.

[0043] Because the first tube 12 and the second tube 22 need to guide each other, the gap between them is relatively small. The end of the first tube 12 facing away from the second tube 22 is sealed, and the end of the second tube 22 facing away from the first tube 12 is also sealed. When the second tube 22 extends or retracts within the first tube 12, the air inside both tubes is compressed if it cannot be expelled in time, thus preventing the second tube 22 from sliding into the first tube 12. When the second tube 22 extends out of the first tube 12, the space between them expands, creating a negative pressure state during sliding, causing them to pull against each other. Therefore, during the extension and retraction of the second tube 22 within the first tube 12, the air pressure inside both tubes changes with their relative movement. The change in air pressure will affect the motion state of the second tube 22 and the first tube 12, thereby achieving the purpose of using the change in air pressure to create resistance to the relative motion between the first tube 12 and the second tube 22, thereby consuming mechanical energy, and can effectively prevent the relative motion between the first tube 12 and the second tube 22.

[0044] In some embodiments of this application, the outer wall of the portion of the second tube 22 inserted into the first tube 12 is in contact with the inner wall of the first tube 12. When the outer wall of the second tube 22 and the inner wall of the first tube 12 are in contact, the second tube 22 and the first tube 12 can better utilize changes in air pressure to dissipate vibration energy. When the second tube 22 expands and contracts within the first tube 12, it performs work on the gas, thereby converting mechanical energy into heat energy, which also contributes to the dissipation of vibration energy.

[0045] In some embodiments of this application, the end of the first tube 12 facing away from the second tube 22 is provided with a first connecting block 11, and the end of the second tube 22 facing away from the first tube 12 is provided with a second connecting block 21. The arrangement of the first connecting block 11 and the second connecting block 21 can provide a more stable connection foundation for the external connection of the first connecting mechanism 1 and the second connecting mechanism 2, thereby enabling the embodiments of this application to provide a more stable buffering and shock absorption effect when vibration occurs.

[0046] When vibration occurs, the first connecting block 11 and the second connecting block 21, as connecting components that directly contact the vibration, need to ensure their own structural stability as well as the stability of their connection with the first pipe body 12 and the second pipe body 22. Only when their own structure is stable and the connection status at the connection position is stable can problems such as reduced damping capacity, interruption of damping process, or change of damping stroke direction occur during the damping process.

[0047] In some embodiments of this application, a plurality of anchor rods 4 are fixed on both the first connecting block 11 and the second connecting block 21. The anchor rods 4 on the first connecting block 11 are inserted into and anchored within the first pipe body 12, and the anchor rods 4 on the second connecting block 21 are inserted into and anchored within the second pipe body 22. By strengthening the integrity of the first connecting block 11 and the first pipe body 12 with the anchor rods 4, the structural stability of the first connecting block 11 can be improved through more stable force transmission, and the connection stability between the first connecting block 11 and the first pipe body 12 can also be improved through anchoring. Similarly, by strengthening the integrity of the second connecting block 21 and the second pipe body 22 with the anchor rods 4, the structural stability of the second connecting block 21 can be improved through more stable force transmission, and the connection stability between the second connecting block 21 and the second pipe body 22 can also be improved through anchoring.

[0048] In some embodiments of this application, such as Figure 1 and Figure 2As shown, both the first connecting block 11 and the second connecting block 21 are provided with several reinforcing plates 5. The reinforcing plates 5 strengthen and fix the connection position, and also improve the overall strength of the first connecting mechanism 1 and the second connecting mechanism 2, thereby better withstanding vibration energy. The two ends of the reinforcing plate 5 on the first connecting block 11 are fixedly connected to the first connecting block 11 and the first tube 12, respectively, thereby enhancing the strength of the first connecting mechanism 1. Since the reinforcing plate 5 spans the first connecting block 11 and the first tube 12, it also enhances the connection stability between the first connecting block 11 and the first tube 12. Similarly, the two ends of the reinforcing plate 5 on the second connecting block 21 are fixedly connected to the second connecting block 21 and the second tube 22, respectively, thereby enhancing the strength of the second connecting mechanism 2. Since the reinforcing plate 5 spans the second connecting block 21 and the second tube 22, it also enhances the connection stability between the second connecting block 21 and the second tube 22.

[0049] The reinforcing plate 5 enhances the structural strength of both the first connecting mechanism 1 and the second connecting mechanism 2, thereby enabling more stable transmission of vibration energy when subjected to vibration, and also enhancing the ability of this embodiment to cope with complex external working conditions.

[0050] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0051] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0052] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A self-resetting friction damper, characterized in that, It includes a first connecting mechanism (1) and a second connecting mechanism (2), wherein the second connecting mechanism (2) is inserted into the first connecting mechanism (1); The first connecting mechanism (1) is provided with a buffer component (31), and the second connecting mechanism (2) is provided with an energy dissipation component (32). The buffer component (31) is at least partially inserted into the second connecting mechanism (2) and abuts against the energy dissipation component (32). The buffer component (31) is slidably connected to the second connecting mechanism (2).

2. The self-resetting friction damper according to claim 1, characterized in that, The energy-consuming component (32) includes a plurality of butterfly springs (321), which are arranged overlappingly along the axis of the second connecting mechanism (2). The end of the buffer component (31) is inserted into the second connecting mechanism (2) and abuts against the butterfly springs (321).

3. A self-resetting friction damper according to claim 2, characterized in that, The second connecting mechanism (2) has a shaft hole (221) with a diameter that matches the outer diameter of the butterfly spring (321). The end of the buffer assembly (31) that abuts against the butterfly spring (321) is inserted into the shaft hole (221).

4. A self-resetting friction damper according to any one of claims 1 to 3, characterized in that, The buffer assembly (31) includes a connecting pipe (331), and a telescopic rod (312) is sleeved inside the connecting pipe (331). One end of the telescopic rod (312) is connected to the connecting pipe (331) by a compression spring, and the other end passes through the energy dissipation assembly (32) and abuts against the second connecting mechanism (2). The end of the connecting pipe (331) abuts against the energy-consuming component (32).

5. A self-resetting friction damper according to claim 4, characterized in that, The end of the second connecting mechanism (2) inserted into the first connecting mechanism (1) is fixed with an annular limiting block (23), and the annular limiting block (23) accommodates the passage of the connecting tube (331); The end of the connecting tube (331) inserted into the second connecting mechanism (2) is fixed with a push block (33), and the push block (33) abuts against the energy-consuming component (32).

6. A self-resetting friction damper according to claim 5, characterized in that, The pusher (33) is a ring plate sleeved on the outside of the connecting pipe (331), and the ring plate is coaxially arranged with the connecting pipe (331).

7. A self-resetting friction damper according to any one of claims 1 to 3, characterized in that, The first connecting mechanism (1) includes a first tube (12), and the second connecting mechanism (2) includes a second tube (22), wherein the second tube (22) is at least partially inserted into the first tube (12); The end of the first tube (12) away from the second tube (22) is sealed, and the end of the second tube (22) away from the first tube (12) is sealed.

8. A self-resetting friction damper according to claim 7, characterized in that, The outer wall of the portion of the second tube (22) inserted into the first tube (12) is in contact with the inner wall of the first tube (12).

9. A self-resetting friction damper according to claim 7, characterized in that, The first tube (12) is provided with a first connecting block (11) at the end opposite to the second tube (22), and the second tube (22) is provided with a second connecting block (21) at the end opposite to the first tube (12). Both the first connecting block (11) and the second connecting block (21) are fixed with several anchor rods (4). The anchor rods (4) on the first connecting block (11) are inserted into and anchored in the first pipe body (12), and the anchor rods (4) on the second connecting block (21) are inserted into and anchored in the second pipe body (22).

10. A self-resetting friction damper according to claim 9, characterized in that, Both the first connecting block (11) and the second connecting block (21) are provided with a plurality of reinforcing plates (5). The two ends of the reinforcing plates (5) on the first connecting block (11) are fixedly connected to the first connecting block (11) and the first tube (12) respectively. The two ends of the reinforcing plates (5) on the second connecting block (21) are fixedly connected to the second connecting block (21) and the second tube (22) respectively.

Images