Damper for bridge damping
By using C-shaped guide rails and hinged dampers in bridges, the problems of jamming and performance degradation of traditional dampers in the combined motion of longitudinal sliding and beam end rotation are solved, achieving stronger adaptability and longer service life, and ensuring bridge safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-26
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional transverse dampers are difficult to adapt to the combined motion of longitudinal sliding and beam end rotation, resulting in jamming, performance degradation and damage to connecting parts, which affects bridge safety and service life.
By employing a C-shaped guide rail in the upper connecting assembly that slides with the moving part and a hinged design in the lower connecting assembly, the system adapts to the longitudinal displacement and beam end rotation of the main beam, releases longitudinal constraint forces and rotation, avoids additional bending moments, and ensures that the damper can properly perform its shock absorption function.
This improves the damper's adaptability to combined longitudinal and lateral sliding motions, extends its service life, reduces manufacturing costs and maintenance difficulty, and ensures bridge safety.
Smart Images
Figure CN121781513A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bridge engineering vibration reduction technology, and in particular to a damper for bridge vibration reduction. Background Technology
[0002] In the structural design of long-span continuous beam bridges, lateral dampers are often installed at key locations such as the central pier to suppress lateral vibrations caused by earthquakes, wind loads, or vehicle loads. Traditional lateral dampers are mostly unidirectional devices, connected to the beam and piers via rigid connectors. However, under temperature changes, concrete shrinkage and creep, and seismic loads, the bridge beam will experience significant longitudinal displacement (tens to hundreds of millimeters) and end rotation. This longitudinal movement and end rotation can easily generate additional bending moments and constraint forces on the piston rod or connecting components of traditional lateral dampers, leading to the following problems: 1. Jamming: Excessive friction between the damper piston rod and the seal due to non-axial forces can cause it to jam completely, preventing it from performing its damping function when needed and posing a serious threat to bridge safety. 2. Performance degradation: Long-term non-design direction displacement accelerates the wear and fatigue of the internal components of the damper, shortening its service life. 3. Damage to connecting components: Additional bending moments may cause plastic deformation or damage to components such as connecting plates and anchor bolts.
[0003] Existing damper improvements (such as using spherical hinge supports or unidirectional sliding supports) can often only solve single displacement or rotation problems, making it difficult to adapt to the combined motion of longitudinal sliding and beam end rotation. They also have drawbacks such as complex construction, high cost, and difficult maintenance. Summary of the Invention
[0004] The purpose of this invention is to address the problem that existing dampers in the background art are difficult to adapt to the combined motion of longitudinal sliding and beam end rotation, and to provide a damper for bridge vibration reduction.
[0005] This invention provides a damper for bridge vibration reduction, comprising:
[0006] The main body of the damper is horizontally positioned between the main beam and the pier; The upper connecting component includes a first mounting base, a C-shaped guide rail, and a first transmission component. The first mounting base is connected to the bottom of the main beam, and the C-shaped guide rail is connected to the first mounting base and is arranged longitudinally. One end of the first transmission member is connected to the damper body, and the other end of the first transmission member is provided with a moving part. The moving part is installed in the C-shaped guide rail and can slide along the length direction of the C-shaped guide rail. The lower connecting assembly includes a second mounting base and a second transmission component. The second mounting base is connected to the top of the pier, one end of the second transmission component is hinged to the second mounting base, and the other end of the second transmission component is connected to the end of the damper body away from the upper connecting assembly.
[0007] By using the sliding engagement between the longitudinally arranged C-shaped guide rails in the upper connecting assembly and the moving part, the longitudinal displacement generated by the main beam can be adapted to the movement of the moving part along the length of the C-shaped guide rails, releasing the longitudinal constraint force and preventing the longitudinal displacement from generating additional bending moment on the damper body. At the same time, the hinged design between the second transmission component and the second mounting base in the lower connecting assembly effectively releases the rotation of the beam end, further reducing the non-axial force on the damper body and connecting components, solving the jamming problem of traditional dampers, ensuring the normal functioning of the lateral damping function of the damper body, and ensuring bridge safety. Furthermore, the cooperation between the sliding setting and the hinged structure reduces the wear and fatigue of the internal components of the damper body caused by non-design direction displacement, extends its service life, and prevents plastic deformation or damage to the connecting parts due to additional bending moment. The damper in this embodiment has a simple structure and does not require a complex support structure, which reduces manufacturing costs and the difficulty of later maintenance. Compared with existing transverse dampers, it has a stronger ability to adapt to the combined motion of longitudinal sliding and transverse movement, and is suitable for the use requirements of long-span continuous beam bridges.
[0008] Preferably, the first transmission component includes a horizontally arranged fork plate and a first conversion plate, one end of the fork plate is equipped with the moving part, the other end of the fork plate is hinged to the first conversion plate, and the end of the first conversion plate away from the fork plate is fixedly connected to the damper body.
[0009] The first transmission component includes a fork plate and a first conversion plate. The fork plate and the first conversion plate form a hinge structure, which allows the fork plate and the first conversion plate to rotate relative to each other. This can further release the angular offset caused by the rotation of the beam end and prevent the first transmission component from bearing additional bending moment due to the fixed angle. The fork plate has a moving part installed at one end and a first conversion plate hinged to the other end. The first conversion plate is then fixedly connected to the damper body, realizing the coordinated cooperation of rolling sliding and hinged rotation. This more comprehensively adapts to the combined motion of the bridge's longitudinal displacement and beam end rotation, further reducing the non-axial force on the damper body and connecting components, and avoiding jamming and performance degradation.
[0010] Preferably, the C-shaped guide rail has a receiving cavity on the side near the damper body, and the receiving cavity has grooves on both the top and bottom surfaces; The moving part includes two bearings arranged vertically, each bearing located in a corresponding groove, and the bearing making rolling contact with the side wall of the groove.
[0011] The rolling contact between the bearing and the side wall of the slide groove provides precise guidance for the sliding direction of the bearing, effectively preventing the moving part from deviating or getting stuck during the sliding process, thus improving the sliding stability and smoothness.
[0012] Preferably, a bearing is installed on both the upper and lower sides of the fork plate.
[0013] By installing a bearing on each of the upper and lower sides of the fork plate, corresponding to the sliding grooves on the top and bottom surfaces of the receiving cavity, the two bearings can evenly distribute the force transmitted by the fork plate, avoiding excessive force on a single bearing that could lead to wear, deformation, or detachment.
[0014] Preferably, the fork plate is provided with a fixing post on both the top and bottom surfaces, and the bearing is sleeved on the fixing post.
[0015] Preferably, the fork plate is provided with at least two sets of the moving parts.
[0016] By setting at least two sets of moving parts on the fork plate, the multiple sets of moving parts work together to improve the sliding stability between the fork plate and the C-shaped guide rail, and avoid the situation where a single moving part slides off or the component is deformed due to concentrated force.
[0017] Preferably, the second transmission component includes a second conversion plate, one end of which is fixedly connected to the damper body, and the other end of which is hinged to the second mounting base.
[0018] One end of the second conversion plate is fixedly connected to the damper body, and the other end is hinged to the second mounting base. The hinged connection between the second conversion plate and the second mounting base can flexibly release the angular offset caused by the rotation of the beam end, further reducing the additional bending moment on the damper body. It works in synergy with the sliding structure of the upper connecting component to more comprehensively adapt to the combined motion of the bridge's longitudinal displacement and the rotation of the beam end, solving the problems of jamming and performance degradation of traditional dampers.
[0019] Preferably, it further includes a first pre-embedded anchor bolt, which is used to be pre-embedded at the bottom of the main beam, and the first mounting seat is connected to the first pre-embedded anchor bolt.
[0020] Preferably, the system further includes a second pre-embedded anchor bolt, which is used to be pre-embedded in the top of the pier, and the second mounting base is connected to the second pre-embedded anchor bolt.
[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The damper of this invention, through the sliding cooperation between the longitudinally arranged C-shaped guide rail in the upper connecting assembly and the moving part, can adapt to the longitudinal displacement generated by the main beam, allowing the moving part to slide along the length of the C-shaped guide rail, releasing the longitudinal constraint force, and avoiding additional bending moment on the damper body due to longitudinal displacement. At the same time, through the hinged design of the second transmission component and the second mounting base in the lower connecting assembly, the rotation of the beam end can be effectively released, further reducing the non-axial force on the damper body and connecting components, solving the jamming problem of traditional dampers, ensuring the normal functioning of the lateral damping function of the damper body, and ensuring bridge safety. Furthermore, the cooperation between the sliding setting and the hinged structure reduces the wear and fatigue of the internal components of the damper body due to non-design direction displacement, extending its service life, and preventing plastic deformation or damage to the connecting components due to additional bending moment. Its simple structure and lack of complex support structure reduce manufacturing costs and post-maintenance difficulty. Compared with existing lateral dampers, it has a stronger adaptability to the combined longitudinal sliding and lateral motion, and is suitable for the use requirements of long-span continuous beam bridges. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the damper of the present invention installed on a bridge.
[0023] Figure 2 This is an elevation view of the damper of the present invention.
[0024] Figure 3 This is a top view of the damper of the present invention.
[0025] Figure 4 This is a schematic diagram of the combination of the first transmission component and the moving part.
[0026] Figure 5 yes Figure 4 Top view.
[0027] Figure 6 This is the first conversion board's positive attempt.
[0028] Figure 7 yes Figure 6 Top view.
[0029] Figure 8 This is the front view of the C-shaped guide rail.
[0030] Figure 9 This is a schematic diagram showing the interaction between the second mounting base and the second transmission component.
[0031] Figure 10 yes Figure 9 Top view.
[0032] Marked in the image: 1-Damper body, 2-Upper connection component, 21-First mounting bracket, 22-C-shaped guide rail, 221-receiving cavity, 222-slide groove, 23-First transmission component, 231-Fork plate, 232-First conversion plate, 2321-First horizontal plate, 2322-First intermediate plate, 2323-First vertical plate, 233-Fixing column, 234-First pin. 24-Moving part, 241-Bearing, 25 - First pre-embedded anchor bolt, 26-Reinforcing plate, 27-Baffle, 3- Lower connection component, 31-Second mounting base, 311-Connecting plate, 32-Second transmission component, 321-Second conversion plate, 3211-Second horizontal plate, 3212-Second intermediate plate, 3213-Second vertical plate, 33-Second embedded anchor bolt, 34-Second pin. 10-Main beam, 20-Bridge pier. Detailed Implementation
[0033] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0034] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.
[0035] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are set as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," "parallel," or "coaxial" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.
[0036] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.
[0037] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.
[0038] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.
[0039] Example 1 like Figure 1 , Figure 2 , Figure 3As shown, this embodiment discloses a damper for bridge vibration reduction, including a damper body 1, an upper connecting assembly 2, and a lower connecting assembly 3. The upper connecting assembly 2 is installed at the bottom of the main beam 10, and the lower connecting assembly 3 is installed at the top of the pier 20. The upper connecting assembly 2 and the lower connecting assembly 3 are respectively connected to both ends of the damper body 1. Specifically: The damper body 1 is laterally positioned between the main beam 10 and the pier 20; The upper connecting component 2 includes a first mounting base 21, a C-shaped guide rail 22 and a first transmission component 23. The first mounting base 21 is connected to the bottom of the main beam 10, and the C-shaped guide rail 22 is connected to the first mounting base 21 and is arranged longitudinally. One end of the first transmission member 23 is connected to the damper body 1, and the other end of the first transmission member 23 is provided with a moving part 24. The moving part 24 is installed in the C-shaped guide rail 22 and can slide along the length direction of the C-shaped guide rail 22. The lower connecting component 3 includes a second mounting base 31 and a second transmission component 32. The second mounting base 31 is connected to the top of the pier 20. One end of the second transmission component 32 is hinged to the second mounting base 31, and the other end of the second transmission component 32 is connected to the end of the damper body 1 away from the upper connecting component 2.
[0040] In this embodiment, the damper, through the sliding cooperation between the longitudinally arranged C-shaped guide rail 22 in the upper connecting component 2 and the moving part 24, can adapt to the longitudinal displacement generated by the main beam 10, allowing the moving part 24 to slide along the length direction of the C-shaped guide rail 22, releasing the longitudinal constraint force, and avoiding the additional bending moment generated by the longitudinal displacement on the damper body 1; through the hinged design of the second transmission component 32 and the second mounting base 31 in the lower connecting component 3, the rotation of the beam end can be effectively released, further reducing the non-axial force on the damper body 1 and connecting components, solving the jamming problem of traditional dampers, ensuring that the lateral damping function of the damper body 1 is normal and ensuring bridge safety. At the same time, the cooperation between the sliding setting and the hinged structure reduces the wear and fatigue of the internal components of the damper body 1 caused by non-design direction displacement, extends its service life, and avoids plastic deformation or damage to each connecting component due to additional bending moment; The damper in this embodiment has a simple structure and does not require a complex support structure, which reduces manufacturing costs and the difficulty of later maintenance. Compared with existing transverse dampers, it has a stronger ability to adapt to the combined motion of longitudinal sliding and transverse movement, and is suitable for the use requirements of long-span continuous beam bridges.
[0041] In this embodiment, the damper has a sliding pair formed between the C-shaped guide rail 22 and the moving part 24 in the upper connecting assembly 2, which adapts to the longitudinal displacement of the main beam 10; the second transmission member 32 and the second mounting base 31 in the lower connecting assembly 3 form a hinged pair, which adapts to the rotation of the beam end of the main beam 10; the lateral displacement of the main beam 10 is damped by the damper body 1, which can effectively eliminate the interference of the longitudinal movement of the main beam and the rotation of the beam end on the working performance of the lateral damper, avoid generating additional bending moment or constraint force on the laterally set damper body 1, ensure that the damper always works in the designed damping displacement direction, and has stable output, fundamentally eliminating the jamming phenomenon, thereby realizing the complete decoupling of longitudinal movement and lateral damping function, ensuring the immediate response and normal function of the damper under seismic action and temperature change, and has extremely high reliability.
[0042] In this embodiment, the damper body 1 can be selected from liquid viscous dampers, friction dampers, metal dampers, etc.
[0043] In one or more implementations, such as Figure 4 As shown, the first transmission component 23 includes a horizontally arranged fork plate 231 and a first conversion plate 232. A moving part 24 is installed at one end of the fork plate 231, and the other end of the fork plate 231 is hinged to the first conversion plate 232. The end of the first conversion plate 232 away from the fork plate 231 is fixedly connected to the damper body 1.
[0044] The first transmission component 23 includes a fork plate 231 and a first conversion plate 232. The fork plate 231 and the first conversion plate 232 form a hinge structure, which allows the fork plate 231 and the first conversion plate 232 to rotate relative to each other. This can further release the angular offset caused by the rotation of the beam end and prevent the first transmission component 23 from bearing additional bending moment due to the fixed angle. One end of the fork plate 231 is equipped with the moving part 24, and the other end is hinged to the first conversion plate 232. The first conversion plate 232 is then fixedly connected to the damper body 1, realizing the coordinated cooperation of rolling sliding and hinge rotation. This more comprehensively adapts to the combined motion of the bridge's longitudinal displacement and beam end rotation, further reducing the non-axial force on the damper body and connecting components, and avoiding jamming and performance degradation. At the same time, this hinge structure is simple, has low wear, and is easy to maintain, which can improve the levelness and service life of the entire upper connecting assembly 2. Meanwhile, the fork plate has a simple structure, smooth hinge connection, low wear, and is easy to install and maintain.
[0045] Furthermore, such as Figure 4 , Figure 5 As shown, the fork plate 231 is hinged to the first conversion plate 232 via the first pin 234; The end of the first conversion plate 232 away from the fork plate 231 is bolted to the damper body 1.
[0046] Specifically, such as Figure 4 , Figure 5 As shown, the first conversion plate 232 includes a first horizontal plate 2321, a first intermediate plate 2322, and a first vertical plate 2323. The first horizontal plate 2321 and the first vertical plate 2323 are respectively disposed on both sides of the first intermediate plate 2322. The first horizontal plate 2321 is used to be hinged to the fork plate 231, and the first vertical plate 2323 is used to be connected to the damper body 1. The first horizontal plate 2321 consists of two pieces, arranged vertically at intervals, with through holes in each. One end of the fork plate 231 extends between the two first horizontal plates 2321, and is connected to the fork plate 231 by a first pin 234 passing through the first horizontal plate 2321. The fork plate 231 is hinged to the first horizontal plate 2321, thus achieving the hinge connection between the fork plate 231 and the first conversion plate 232. Figure 4 ; The number of first vertical plates 2323 is no less than two, arranged longitudinally at intervals. Each first vertical plate 2323 is provided with through holes to facilitate the passage of bolts, and the first vertical plate 2323 is connected to the damper body 1 by bolts.
[0047] In optional implementations, such as Figure 2 , Figure 8 As shown, the C-shaped guide rail 22 has a receiving cavity 221 on the side near the damper body 1, and the receiving cavity 221 has a sliding groove 222 on both the top and bottom surfaces. like Figure 4 As shown, the moving part 24 includes two bearings 241 arranged vertically, each bearing 241 located in a corresponding groove 222, and the bearing 241 makes rolling contact with the side wall of the groove 222.
[0048] The C-shaped guide rail 22 has a receiving cavity 221 on the side near the damper body 1. The receiving cavity 221 is arranged along the length direction of the damper body 1. The top and bottom surfaces of the receiving cavity 221 are provided with grooves 222. The two bearings 241 of the moving part 24 are respectively embedded in the grooves 222. That is, the upper bearing 241 is installed in the groove 222 on the top surface of the receiving cavity 221, and the lower bearing 241 is installed in the groove 222 on the bottom surface of the receiving cavity 221. The rolling contact between the bearing 241 and the side wall of the groove 222 provides precise guidance for the sliding direction of the bearing 241, effectively preventing the moving part 24 from deviating or getting stuck during the sliding process, thus improving sliding stability and smoothness. Furthermore, such as Figure 4As shown, the symmetrically arranged bearings 241 and the sliding grooves 222 cooperate to evenly bear the force on the moving part 24, reduce the wear of individual bearings 241, extend the service life of the moving part 24 and the C-shaped guide rail 22, and ensure that the longitudinal displacement can be released stably and smoothly. Furthermore, this ensures the stable operation of the lateral damping function of the damper body 1, preventing additional forces from being generated due to poor sliding.
[0049] In optional implementations, such as Figure 4 As shown, a bearing 241 is installed on both the upper and lower sides of the fork plate 231. By installing a bearing 241 on each of the upper and lower sides of the fork plate 231, corresponding to the sliding grooves 222 on the top and bottom surfaces of the receiving cavity 221, the two bearings 241 can evenly distribute the force transmitted by the fork plate 231, avoiding excessive force on a single bearing 241, which could lead to wear, deformation or detachment, and extending the service life of the bearings. Furthermore, the two bearings 241 are installed symmetrically, which improves the sliding stability of the moving part 24 in the slide groove 222, enhances the connection reliability between the fork plate 231 and the C-shaped guide rail 22, and ensures the structural stability of the entire upper connecting assembly 2.
[0050] In optional implementations, such as Figure 4 , Figure 5 As shown, the top and bottom surfaces of the fork plate 231 are provided with fixing posts 233, and bearings 241 are sleeved on the fixing posts 233.
[0051] By setting fixing posts 233 on the top and bottom surfaces of the fork plate 231, the bearing 241 is sleeved on the fixing posts 233, thus achieving a stable installation of the bearing 241. This effectively prevents the bearing 241 from loosening or falling off during rolling, thereby improving the reliability of the bearing 241 installation. In optional implementations, such as Figure 5 As shown, the fork plate 231 is provided with at least two sets of moving parts 24.
[0052] By providing at least two sets of moving parts 24 on the fork plate 231, the multiple sets of moving parts 241 work together to improve the sliding stability between the fork plate 231 and the C-shaped guide rail 22, and avoid the situation where a single moving part 24 slides off or deforms due to concentrated force. At the same time, multiple sets of moving parts 24 can evenly distribute the longitudinal force, reduce the force load on a single set of moving parts 24, reduce the wear rate of bearing 241, and extend its service life. Furthermore, the arrangement of multiple moving parts 24 can further enhance the structural bearing capacity of the upper connecting component 2, ensuring that when the main beam 10 generates a large longitudinal displacement, it can still achieve stable and smooth sliding, reliably release the longitudinal constraint force, avoid the damper body 1 from bearing additional bending moment, and ensure the stable performance of the overall damper.
[0053] In optional implementations, such as Figure 2 , Figure 3 As shown, it also includes a first pre-embedded anchor bolt 25, which is used to be pre-embedded at the bottom of the main beam 10, and a first mounting base 21 is connected to the first pre-embedded anchor bolt 25.
[0054] By setting the first pre-embedded anchor bolt 25 and embedding it at the bottom of the main beam 10, and then connecting the first mounting base 21 to the first pre-embedded anchor bolt 25, the connection stability between the first mounting base 21 and the bottom of the main beam 10 is improved, and the first mounting base 21 is prevented from becoming loose or displaced, thus ensuring the installation accuracy and structural stability of the upper connecting component 2.
[0055] In optional implementations, such as Figure 3 As shown, it also includes a reinforcing plate 26, which is used to connect the C-shaped guide rail 22 and the first mounting base 21.
[0056] The connection strength between the C-shaped guide rail 22 and the first mounting base 21 is enhanced by the reinforcing plate 26.
[0057] In optional implementations, such as Figure 3 As shown, it also includes a baffle 27, which is detachably connected to both ends of the C-shaped guide rail 22.
[0058] The baffle 27 blocks both ends of the C-shaped guide rail 22 to prevent the moving part 24 from coming off the C-shaped guide rail 22; When installing the movable part 24, slide the movable part 24 into the receiving cavity 221 of the C-shaped guide rail 22 from one end of the C-shaped guide rail 22, and then use the baffle 27 to seal both ends of the C-shaped guide rail 22.
[0059] In one or more implementations, such as Figure 9 , Figure 10 As shown, the second transmission component 32 includes a second conversion plate 321. One end of the second conversion plate 321 is fixedly connected to the damper body 1, and the other end of the second conversion plate 321 is hinged to the second mounting base 31.
[0060] One end of the second conversion plate 321 is fixedly connected to the damper body 1, and the other end is hinged to the second mounting base 31. The hinged connection between the second conversion plate 321 and the second mounting base 31 can flexibly release the angular offset caused by the rotation of the beam end, further reducing the additional bending moment on the damper body 1. It works in synergy with the sliding structure of the upper connecting component 2 to more comprehensively adapt to the combined motion of the bridge's longitudinal displacement and the rotation of the beam end, solving the problems of jamming and performance degradation of traditional dampers.
[0061] Specifically, such as Figure 9 , Figure 10As shown, the second conversion plate 321 includes a second horizontal plate 3211, a second intermediate plate 3212, and a second vertical plate 3213. The second horizontal plate 3211 and the second vertical plate 3213 are respectively disposed on both sides of the second intermediate plate 3212. The second horizontal plate 3211 is used to be hinged to the second mounting base 31, and the second vertical plate 3213 is used to be connected to the damper body 1. The second horizontal plate 3211 consists of two pieces, arranged vertically at intervals, and each second horizontal plate 3211 has a through hole. The second mounting base 31 is equipped with a connecting plate 311. One end of the connecting plate 311 extends between the two second horizontal plates 3211, and is then connected to the connecting plate 311 by a second pin 34 passing through the second horizontal plate 3211. The connecting plate 311 is hinged to the second horizontal plate 3211. The hinge between the second mounting base 31 and the second conversion plate 321 is as follows: Figure 9 ; The number of second vertical plates 3213 is no less than two, arranged longitudinally at intervals. Each second vertical plate 3213 is provided with through holes to facilitate the passage of bolts, and the second vertical plate 3213 is connected to the damper body 1 by bolts.
[0062] In optional implementations, such as Figure 2 , Figure 3 As shown, it also includes a second pre-embedded anchor bolt 33, which is used to be pre-embedded in the top of the pier 20, and the second mounting base 31 is connected to the second pre-embedded anchor bolt 33.
[0063] By setting a second pre-embedded anchor bolt 33 and embedding it in the top of the pier 20, and then connecting the second mounting base 31 to the second pre-embedded anchor bolt 33, the connection stability between the second mounting base 31 and the top of the pier 20 is improved, and the second mounting base 31 is prevented from becoming loose or displaced, thus ensuring the installation accuracy and structural stability of the lower connecting component 3.
[0064] It should be noted that in this embodiment, the damper body 1 is arranged laterally between the main beam 10 and the pier 20, and the C-shaped guide rail 22 is arranged longitudinally. The direction of the damper is a generalized direction, that is, the lateral direction refers to the design displacement direction of the damper body 1, while the longitudinal direction refers to the direction perpendicular to the damping design displacement direction. Therefore, in this embodiment, the direction of the bridge is used as a reference. If the damper body 1 is set along the width direction of the bridge, then the C-shaped guide rail 22 is set along the length direction of the bridge. If the damper body 1 is set along the length of the bridge, then the C-shaped guide rail 22 is set along the width of the bridge.
[0065] Example 2 like Figures 1-3As shown, based on Embodiment 1, this embodiment discloses a method for installing a damper. Installing the damper described in Embodiment 1 includes the following steps: S1: Install a second mounting seat 31 on the top of the pier 20, install a first mounting seat 21 on the bottom of the main beam 10, and connect the C-shaped guide rail 22 longitudinally to the first mounting seat 21; Specifically, the C-shaped guide rail 22 is welded around the bottom of the first mounting base 21; S2: Install the moving part 24 at one end of the first transmission member 23, and then slide the moving part 24 laterally into the C-shaped guide rail 22; S3: Hinge one end of the second transmission component 32 to the second mounting base 31; S4: Install the damper body 1, fix the other end of the first transmission component 23 to the damper body 1, and fix the other end of the second transmission component 32 to the damper body 1. S5: Perform sealing and corrosion protection on the damper.
[0066] The installation method of this embodiment first installs the first mounting base 21, C-shaped guide rail 22 and second mounting base 31, then assembles the first transmission component 23, moving part 24 and damper body, and finally connects the second transmission component 32 to the damper body 1 and the second mounting base 31. This installation sequence can effectively avoid component installation deviations, ensure the installation accuracy of each component, and ensure smooth cooperation between the moving part 24 and the C-shaped guide rail 22 and each connecting part. The steps are clear and logical, which is convenient for construction personnel to operate, improves installation efficiency and reduces installation difficulty.
[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A damper for bridge vibration reduction, characterized in that, include: The damper body (1) is laterally positioned between the main beam (10) and the pier (20); The upper connecting component (2) includes a first mounting base (21), a C-shaped guide rail (22) and a first transmission component (23). The first mounting base (21) is connected to the bottom of the main beam (10), and the C-shaped guide rail (22) is connected to the first mounting base (21) and the C-shaped guide rail (22) is arranged longitudinally. One end of the first transmission member (23) is connected to the damper body (1), and the other end of the first transmission member (23) is provided with a moving part (24). The moving part (24) is installed in the C-shaped guide rail (22), and the moving part (24) can slide along the length direction of the C-shaped guide rail (22). The lower connecting assembly (3) includes a second mounting base (31) and a second transmission member (32). The second mounting base (31) is connected to the top of the pier (20). One end of the second transmission member (32) is hinged to the second mounting base (31), and the other end of the second transmission member (32) is connected to the end of the damper body (1) away from the upper connecting assembly (2).
2. A damper for bridge vibration reduction according to claim 1, characterized in that, The first transmission component (23) includes a horizontally arranged fork plate (231) and a first conversion plate (232). The moving part (24) is installed at one end of the fork plate (231), and the other end of the fork plate (231) is hinged to the first conversion plate (232). The end of the first conversion plate (232) away from the fork plate (231) is fixedly connected to the damper body (1).
3. A damper for bridge vibration reduction according to claim 2, characterized in that, The C-shaped guide rail (22) has a receiving cavity (221) on the side near the damper body (1), and the receiving cavity (221) has a sliding groove (222) on both the top and bottom surfaces. The moving part (24) includes two bearings (241) arranged vertically, each bearing (241) being located in the corresponding groove (222), and the bearing (241) making rolling contact with the side wall of the groove (222).
4. A damper for bridge vibration reduction according to claim 3, characterized in that, A bearing (241) is installed on both the upper and lower sides of the fork plate (231).
5. A damper for bridge vibration reduction according to claim 4, characterized in that, The fork plate (231) is provided with a fixing post (233) on both the top and bottom surfaces, and the bearing (241) is sleeved on the fixing post (233).
6. A damper for bridge vibration reduction according to claim 3, characterized in that, The fork plate (231) is provided with at least two sets of the moving parts (24).
7. A damper for bridge vibration reduction according to claim 1, characterized in that, The second transmission component (32) includes a second conversion plate (321), one end of which is fixedly connected to the damper body (1), and the other end of which is hinged to the second mounting base (31).
8. A damper for bridge vibration reduction according to claim 1, characterized in that, It also includes a first pre-embedded anchor bolt (25), which is used to be pre-embedded at the bottom of the main beam (10), and the first mounting seat (21) is connected to the first pre-embedded anchor bolt (25).
9. A damper for bridge vibration reduction according to claim 1, characterized in that, It also includes a second pre-embedded anchor (33), which is used to be pre-embedded on the top of the pier (20), and the second mounting seat (31) is connected to the second pre-embedded anchor (33).