A shock-absorbing damping device, a shock-absorbing bridge and a shock-absorbing building

Abstract

The application relates to a damping device, a damping bridge and a damping building, and relates to the technical field of damping devices.The damping device comprises an upper rotating body and a lower rotating body, a main driving mechanism is connected between the upper rotating body or the lower rotating body and a corresponding building structure, the main driving mechanism is used for transmitting power to drive the corresponding rotating body to rotate when the building structure is shaken by a lateral load, a secondary driving mechanism is further transmissionally connected between the upper rotating body and the lower rotating body, the secondary driving mechanism is used for driving the other rotating body to reversely rotate when the upper rotating body or the lower rotating body rotates, the upper rotating body is transmissionally connected with a synchronously rotatable upper flywheel, the lower rotating body is transmissionally connected with a synchronously rotatable lower flywheel, the upper flywheel and the lower flywheel are coaxially arranged and are connected with a damping mechanism between the upper flywheel and the lower flywheel, and the damping mechanism can be stretched or contracted when the upper flywheel and the lower flywheel relatively rotate.The application can reduce the shaking problem caused by the lateral load during the driving process of the bridge.

Description

Technical Field

[0001] This invention relates to the field of vibration damping technology, and more particularly to a vibration damping device, a vibration damping bridge, and a vibration damping building. Background Technology

[0002] In bridge engineering, lateral load variations generated during traffic are a significant factor affecting bridge stability and service life. Existing bridge vibration reduction systems primarily focus on the bearing and distribution of longitudinal loads, while paying insufficient attention to bridge swaying caused by lateral load variations.

[0003] As a crucial component of transportation infrastructure, the stability and durability of bridges are essential for ensuring traffic safety and smooth flow. During actual driving, vehicle movement generates lateral loads, which vary with vehicle speed, vehicle type, and driving pattern, causing varying degrees of swaying on the bridge deck. This is particularly pronounced in suspension and cable-stayed bridges employing floating systems. However, existing bridge designs and vibration damping systems have the following shortcomings in addressing this issue: Firstly, traditional bridge designs often prioritize longitudinal load-bearing capacity while neglecting the impact of lateral load variations on bridge stability. This leads to increased deck sway in suspension and cable-stayed bridges during vehicle traffic, especially at high speeds or when heavy vehicles pass, affecting driving safety and comfort.

[0004] Secondly, existing bridge damping devices are mostly designed to resist lateral loads from natural disasters such as earthquakes, and are poorly adapted to changes in lateral loads generated during vehicle traffic. These devices often cannot effectively respond to rapidly changing lateral loads, resulting in unsatisfactory damping performance. Summary of the Invention

[0005] One of the objectives of this invention is to provide a shock-absorbing damping device that is more suitable for reducing the swaying problem caused by lateral loads during vehicle traffic on bridges.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a shock absorption and damping device, comprising an upper rotating body and a lower rotating body, wherein the upper rotating body or the lower rotating body is connected to a corresponding building structure by a main drive mechanism, the main drive mechanism being used to transmit power to drive the corresponding rotating body to rotate when the building structure is subjected to a lateral load and thus sways, and a secondary drive mechanism is also connected between the upper rotating body and the lower rotating body, the secondary drive mechanism being used to drive another rotating body to rotate in the opposite direction when the upper rotating body or the lower rotating body rotates, the upper rotating body being connected to a synchronously rotating upper flywheel, and the lower rotating body being connected to a synchronously rotating lower flywheel, the upper flywheel and the lower flywheel being coaxially arranged and connected to each other by a damping mechanism, the damping mechanism being able to stretch or contract when the upper flywheel and the lower flywheel rotate relative to each other.

[0007] Preferably, the damping mechanism includes two damping kits connected to the upper and lower flywheels respectively. Each damping kit includes six sets of support rod kits, and each set of support rod kits includes two support rods. The bottom ends of the two support rods in the same set of support rod kits are hinged to the same position on the corresponding flywheel to form a support node. The six support nodes are evenly spaced in a ring on the corresponding flywheel. The top ends of the two support rods in the same set of support rod kits are each hinged to the top end of the support rod in the support rod kit on the adjacent side to form a movable node. The movable nodes between the upper and lower damping kits are correspondingly and movably connected to form freely movable expansion and contraction main nodes. Adjacent expansion and contraction main nodes are connected by a separate damper. The two ends of each damper are connected to the corresponding expansion and contraction main nodes by hinge. Each support rod is made of a viscous damper.

[0008] More preferably, the damper pulls the expansion and contraction main nodes at both ends in its natural state so that the two damping kits are spliced ​​into a funnel-shaped structure that is small in the middle and large at both ends. The expansion and contraction main nodes and the support nodes are both formed by universal joint connection.

[0009] More preferably, the main drive mechanism includes a rack mounted on the building structure and main gear teeth arranged in a ring on the upper or lower rotating body and meshing with the corresponding rack; the auxiliary drive mechanism includes a transmission gear arranged between the upper and lower rotating bodies and auxiliary gear teeth arranged in a ring on the upper and lower rotating bodies and meshing with the transmission gear.

[0010] More preferably, the bottom end of the lower rotating body is coaxially fixedly connected to the upper flywheel through a hollow shaft, and both the lower rotating body and the upper flywheel have through holes at their centers. The bottom end of the upper rotating body is coaxially fixedly connected to the lower flywheel through a transmission shaft, and the transmission shaft passes downward through the through hole of the lower rotating body, the hollow shaft, and the through hole of the upper flywheel in sequence.

[0011] More preferably, the upper rotating body is connected to the upper building structure by a main drive mechanism, the bottom end of the lower flywheel is rotatably connected to the lower building structure through a bottom support shaft, the hollow shaft is rotatably connected to the lower building structure through a bearing, and a support bearing is also connected between the drive shaft and the hollow shaft.

[0012] More preferably, the lower rotating body is connected to the building structure below by a main drive mechanism, the top end of the upper rotating body is rotatably connected to the building structure above by a top support shaft, and a support bearing is also connected between the drive shaft and the hollow shaft.

[0013] In addition, the present invention also provides a shock-absorbing bridge, including a main beam, a tower, suspension cables, and a suspender connecting the suspension cables and the main beam. The tower is provided with a support beam and the support beam is located below the main beam. The aforementioned shock-absorbing damping device is connected between the support beam and the main beam.

[0014] Meanwhile, another type of vibration-damping bridge is also provided, including a main beam and a tower. The tower is connected to the main beam by multiple stay cables. The tower is equipped with a support beam located below the main beam. The aforementioned vibration-damping device is connected between the support beam and the main beam.

[0015] In addition, the present invention also provides a vibration-damping building, which is provided with the above-mentioned vibration-damping device.

[0016] Compared with existing technologies, this invention, by introducing its damping device into the bridge structure, can effectively absorb and disperse lateral loads generated during traffic, reducing lateral sway and significantly improving bridge stability. This is particularly important for bridge structures employing floating systems, such as suspension bridges and cable-stayed bridges, as it can maintain bridge deck stability under various traffic conditions and improve structural safety. Furthermore, the damping device of this invention is designed to accommodate rapid changes in lateral loads during traffic. Through the synergistic action of the main and auxiliary drive mechanisms, and the damping mechanism between the upper and lower flywheels, it can quickly respond to and adapt to different lateral load changes, providing a continuous and stable damping effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in Example 1; Figure 2 This is a schematic diagram of the upper flywheel, lower flywheel, and damping mechanism in Example 1; Figure 3 This is a schematic diagram of the overall structure in Example 2.

[0018] In the picture: 1 - Upper rotating body; 2 - Lower rotating body; 3 - Upper flywheel 4 - Lower flywheel; 5 - Damping mechanism; 6 - Expansion / contraction main node. 7 - Damper; 8 - Rack; 9 - Main gear teeth 10 — Transmission gear; 11 — Secondary gear tooth; 12 — Hollow shaft. 13 - Drive shaft; 14 - Bottom support shaft; 15 - Support bearing 16—Top support shaft; 17—Support beam; 18—Support rod 19—Main beam; 20—Support node. Detailed Implementation

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0020] It should be noted in advance that, in this invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances. Furthermore, in this invention, unless otherwise explicitly specified and limited, "on" or "under" a second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Example 1

[0021] like Figures 1 to 2 As shown, a shock absorption and damping device includes an upper rotating body 1 and a lower rotating body 2. The upper rotating body 1 is connected to a corresponding building structure by a main drive mechanism. The main drive mechanism is used to transmit power to drive the corresponding rotating body to rotate when the building structure is subjected to a lateral load and thus sways. The upper rotating body 1 and the lower rotating body 2 are also connected by a secondary drive mechanism. The secondary drive mechanism is used to drive the other rotating body to rotate in the opposite direction when the upper rotating body 1 or the lower rotating body 2 rotates. The upper rotating body 1 is connected to a synchronously rotating upper flywheel 3, and the lower rotating body 2 is connected to a synchronously rotating lower flywheel 4. The upper flywheel 3 and the lower flywheel 4 are coaxially arranged and connected by a damping mechanism 5. The damping mechanism 5 can stretch or contract when the upper flywheel 3 and the lower flywheel 4 rotate relative to each other.

[0022] In the above structure, the damping mechanism 5 includes two damping kits connected to the upper flywheel 3 and the lower flywheel 4 respectively. Each damping kit includes six sets of support rod kits. Each set of support rod kits includes two support rods 18. The bottom ends of the two support rods 18 in the same set of support rod kits are hinged to the same position of the corresponding flywheel to form a support node 20. The six support nodes 20 are evenly spaced in a ring on the corresponding flywheel. The top ends of the two support rods 18 in the same set of support rod kits are each hinged to the top end of the support rod 18 in the support rod kit on the adjacent side to form a movable node. The movable nodes between the upper and lower damping kits are correspondingly and movably connected to form a freely movable expansion and contraction main node 6. Adjacent expansion and contraction main nodes 4 are connected by a separate damper 7. The two ends of each damper 7 are connected to the corresponding expansion and contraction main node 6 by hinge. Each support rod 18 is made of a viscous damper. By evenly distributing six support nodes 20 along a ring, a stable hexagonal structure can be formed. This multi-directional support structure provides stable support in all directions. Simultaneously, the force is evenly distributed across the support rods 18 and the expansion / contraction main nodes 6, preventing excessive local stress that could lead to structural instability. Furthermore, this structure can easily adapt to external deformation, while the connection of the support rods 18 ensures a certain degree of structural stiffness, maintaining overall stability.

[0023] In this design, the damper 7 pulls the expansion and contraction main nodes 6 at both ends in its natural state, so that the two damping components are spliced ​​together to form a funnel-shaped structure that is smaller in the middle and larger at both ends. The expansion and contraction main nodes 6 and the support nodes 20 are both connected by universal joints. To improve the flexibility of the swing direction of the support rods 18, the universal joints can be implemented by connecting each support rod 18 with a ball joint. For the specific implementation structure, for example, the expansion and contraction main nodes 6 and the support nodes 4 can be made of spherical or non-spherical joint structures, and then the corresponding end of each support rod 18 is connected to it through a ball joint. Then the support rods 18 can swing in any direction relative to this joint structure. When the two flywheels rotate relative to each other, the entire damping mechanism 5 can undergo torsional and tensile deformation, while maintaining good spatial stability.

[0024] Those skilled in the art can choose the type of damper 7 according to actual needs or cost requirements. In this embodiment, the damper 7 is preferably a viscous damper. Viscous dampers have a simple structure, high reliability, and low maintenance cost. When applied to this damping device, they can ensure the simplicity and reliability of the overall structure. Furthermore, by selecting different viscous materials and design parameters, the damping force can be precisely controlled so that the damping device can be better adapted to different building and bridge structures.

[0025] In this embodiment, the main drive mechanism includes a rack 8 mounted on the building structure and main gear teeth 9 annularly arranged on the upper rotating body 1 and meshing with the rack 8; the auxiliary drive mechanism includes a transmission gear 10 disposed between the upper rotating body 1 and the lower rotating body 2, and auxiliary gear teeth 11 annularly arranged on the upper rotating body 1 and the lower rotating body 2 respectively and meshing with the transmission gear 10. Those skilled in the art should know that both the main gear teeth 9 and the auxiliary gear teeth 11 can be designed as helical gears; accordingly, the transmission gear 10 can be a helical gear, and the rack 8 can also be designed as a bar-shaped helical gear structure. The transmission gear 10 can be connected to the building structure below via a support rod to form a support.

[0026] The bottom end of the lower rotating body 2 is coaxially and fixedly connected to the upper flywheel 3 through the hollow shaft 12, and both the lower rotating body 2 and the upper flywheel 3 have through holes in their centers. The bottom end of the upper rotating body 1 is coaxially and fixedly connected to the lower flywheel 4 through the transmission shaft 13, and the transmission shaft 13 passes downward through the through hole of the lower rotating body 2, the hollow shaft 12, and the through hole of the upper flywheel 3 in sequence.

[0027] To maintain the stability of the device, the bottom end of the lower flywheel 4 is rotatably connected to the building structure below via the bottom support shaft 14, the hollow shaft 3 is rotatably connected to the building structure below via a bearing, and a support bearing 15 is also connected between the drive shaft 13 and the hollow shaft 12.

[0028] When the shock-absorbing damping device provided in the above embodiment is applied to a suspension bridge, the bridge includes a main girder 19, a tower, suspension cables, and a suspender connecting the suspension cables and the main girder 19. The tower is equipped with a support beam 17 located below the main girder 19. The shock-absorbing damping device is connected between the support beam 17 and the main girder 19. The upper rotating body 1 and the bottom surface of the main girder 19 are connected by a main drive mechanism. That is, a rack 8 is installed on the bottom surface of the main girder 19, and the top surface of the upper rotating body 1 is provided with a main gear tooth 9 that meshes with the rack 8. When the main girder 19 experiences lateral movement during travel... When the load causes swaying, the rack 8 will reciprocate along the lateral load direction, thereby driving the upper rotating body 1 to rotate. The upper rotating body 1 will then drive the lower flywheel 4 to rotate synchronously. At the same time, the secondary gear 11 transmits the rotation effect of the upper rotating body 1 to the lower rotating body 2 to drive the lower rotating body 2 to rotate in the opposite direction, thereby causing the lower rotating body 2 to drive the upper flywheel 3 to rotate synchronously. At this time, the two flywheels will rotate relative to each other, thereby causing the damping mechanism between them to continuously stretch or contract, so as to achieve the effect of energy dissipation and reduce the swaying amplitude of the bridge deck caused by changes in lateral load. Example 2

[0029] like Figure 3As shown, the difference between this embodiment and embodiment 1 is that the main drive mechanism is set between the lower rotating body 2 and the building structure below. The correspondingly adjusted structure also includes the top of the upper rotating body 1 being rotatably connected to the building structure above through the top support shaft 16, the transmission gear 10 being connected to the building structure above through the support rod, and a support bearing 15 being connected between the transmission shaft 13 and the hollow shaft 12. When applied to suspension bridges or cable-stayed bridges, the upper rotating body 1 is connected to the upper building structure, i.e., the main beam 19, through the top support shaft 16. At the same time, the transmission shaft 13 is connected to the hollow shaft 12 by a support bearing 15. This means that the main beam 19 is connected to the entire damping device. When the main beam 19 sways due to changes in lateral load, it will drive the entire damping device to move. This will cause relative motion between the lower rotating body 2 and the rack on the support beam 17, resulting in the lower rotating body 2 rotating. Once the lower rotating body 2 rotates, it will drive the upper rotating body 1 to rotate in the opposite direction through the transmission gear 10. This will cause the two flywheels to rotate accordingly to dissipate energy.

[0030] As can be seen, the damping device provided by this invention, when applied to suspension bridges and cable-stayed bridges with floating structure architectures, can better reduce the sway amplitude caused by lateral load changes during bridge travel. It not only improves the stability and structural safety of the bridge, but also enhances driving comfort by reducing bridge deck sway. This is of great significance for improving the driving experience for drivers and passengers and reducing discomfort caused by bridge sway. Furthermore, the damping device of this invention employs a highly efficient and durable damper and universal joint connection design, which not only ensures the long-term stability of the device but also simplifies maintenance and replacement. This reduces the operating costs of the bridge and ensures that the damping device can maintain efficient operation over long-term use. At the same time, the damping device of this invention has a compact structure. Through the design of the hollow shaft, drive shaft, and support bearings, the device can be flexibly installed in different parts of the bridge, including but not limited to between the towers and the main beams, facilitating integration with existing bridge structures. By reducing the lateral sway and corresponding fatigue damage of the bridge structure, the vibration damping device of the present invention helps to extend the service life of the bridge, reduce structural damage and maintenance needs, thereby reducing long-term maintenance and repair costs, and has very good application prospects and value.

[0031] To facilitate understanding by those skilled in the art of the improvements of this invention over the prior art, some of the accompanying drawings and descriptions have been simplified. The above embodiments are preferred implementations of this invention. In addition, this invention can be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this invention.

Claims

1. A vibration damping device, characterized in that: The structure includes an upper rotating body (1) and a lower rotating body (2). A main drive mechanism connects the upper rotating body (1) or the lower rotating body (2) to the corresponding building structure. This main drive mechanism transmits power to drive the corresponding rotating body to rotate when the building structure is subjected to a lateral load and thus sways. A secondary drive mechanism is also connected between the upper rotating body (1) and the lower rotating body (2). This secondary drive mechanism drives the other rotating body to rotate in the opposite direction when the upper rotating body (1) or the lower rotating body (2) rotates. The upper rotating body (1) is connected to a lower flywheel (4) that can rotate synchronously. The lower rotating body (2) is connected to... There is an upper flywheel (3) that can rotate synchronously. The upper flywheel (3) and the lower flywheel (4) are coaxially arranged and connected by a damping mechanism (5). The damping mechanism (5) can stretch or contract when the upper flywheel (3) and the lower flywheel (4) rotate relative to each other. The damping mechanism (5) includes two damping kits connected to the upper flywheel (3) and the lower flywheel (4) respectively. Each damping kit includes six sets of support rod kits. Each set of support rod kits includes two support rods (18). The bottom ends of the two support rods (18) in the same set of support rod kits are hinged to the same position of the corresponding flywheel to form a support node (20). The six support nodes (20) are located at... The corresponding flywheels are evenly spaced along the ring. The top ends of two support rods (18) in the same set of support rod kits are each hinged to the top end of the support rod (18) in the support rod kit on the adjacent side to form a movable node. The movable nodes between the upper and lower damping kits are correspondingly connected to form a freely movable expansion and contraction main node (6). Adjacent expansion and contraction main nodes (6) are connected by a separate damper (7). The two ends of each damper (7) are connected to the corresponding expansion and contraction main node (6) by hinge. Each support rod (18) is made of a viscous damper. The damper (7) pulls the two ends in its natural state. The main node (6) is expanded and contracted so that the two damping components are spliced ​​into a funnel-shaped structure with a small middle and large ends. The expansion and contraction main node (6) and the support node (20) are both formed by universal joint connection. The bottom end of the lower rotating body (2) is coaxially fixedly connected to the upper flywheel (3) through the hollow shaft (12). The center of the lower rotating body (2) and the upper flywheel (3) are both provided with through holes. The bottom end of the upper rotating body (1) is coaxially fixedly connected to the lower flywheel (4) through the transmission shaft (13). The transmission shaft (13) passes downward through the through hole of the lower rotating body (2), the hollow shaft (12), and the through hole of the upper flywheel (3) in sequence.

2. The shock absorption and damping device according to claim 1, characterized in that: The main drive mechanism includes a rack (8) mounted on the building structure and main gear teeth (9) arranged in a ring on the upper rotating body (1) or the lower rotating body (2) and meshing with the corresponding rack (8); the auxiliary drive mechanism includes a transmission gear (10) arranged between the upper rotating body (1) and the lower rotating body (2) and auxiliary gear teeth (11) arranged in a ring on the upper rotating body (1) and the lower rotating body (2) and meshing with the transmission gear (10).

3. The shock absorption and damping device according to claim 1, characterized in that: The upper rotating body (1) is connected to the upper building structure by a main drive mechanism. The bottom end of the lower flywheel (4) is rotatably connected to the lower building structure through a bottom support shaft (14). The hollow shaft (12) is rotatably connected to the lower building structure through a bearing. A support bearing (15) is also connected between the transmission shaft (13) and the hollow shaft (12).

4. The shock absorption and damping device according to claim 1, characterized in that: The lower rotating body (2) is connected to the building structure below by a main drive mechanism. The top of the upper rotating body (1) is rotatably connected to the building structure above by a top support shaft (16). A support bearing (15) is also connected between the transmission shaft (13) and the hollow shaft (12).

5. A vibration-damping bridge, comprising a main girder (19), towers, suspension cables, and suspenders connecting the suspension cables and the main girder (19), characterized in that: The tower is provided with a support beam (17) and the support beam (17) is located below the main beam (19). The support beam (17) and the main beam (19) are connected by a shock-absorbing damping device as described in any one of claims 1-4.

6. A vibration-damping bridge, comprising a main girder (19) and a tower, wherein multiple stay cables connect the tower to the main girder (19), characterized in that: The tower is provided with a support beam (17) and the support beam (17) is located below the main beam (19). The support beam (17) and the main beam (19) are connected by a shock-absorbing damping device as described in any one of claims 1-4.

7. A vibration-damping building, characterized in that: The device is provided with the shock absorption and damping device as described in any one of claims 1-4.

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