Novel tuned mass damper based on pneumatic control technology

Abstract

The novel tuned mass damper based on the pneumatic control technology comprises a shell unit, a mass unit and elastic units, each elastic unit comprises a cover plate and an air bag, the shell unit comprises a shell, the cover plates are arranged on the shell, the air bags are located in the shell, the mass unit is located in the shell unit, air guide channels are formed in the air bags, and the air guide channels are communicated with the air guide channels. An air guide component communicated with the air guide channel is arranged on the cover plate, the mass unit can move in the shell unit in the direction close to or away from the air guide component to compress and / or stretch the air bag, so that the size of the air guide channel is reduced and / or increased, and then air blowing and suction are achieved through the air guide component. A pneumatic control measure thought is integrated on the basis of the principle of an original tuned mass damper, the resistance of air in the air blowing and sucking process of an air bag is used as the damping force of the air bag, an air guide pipe is connected with an air guide component, airflow is guided out of a box girder, generation of large vortexes is restrained through the air turbulence effect, and the air turbulence effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy dissipation and vibration reduction of civil engineering structures, in particular to a novel tuned mass damper based on pneumatic control technology. Background Technique

[0002] In modern bridge construction, with the development of engineering technology and the progress of materials science, long-span bridges have gradually become more slender and flexible. However, this structural feature also brings significant wind-induced vibration problems, seriously threatening the safety and stability of bridges. Among them, vortex-induced vibration (VIV) is particularly prominent, which not only affects the safety and comfort of driving, but also accelerates the fatigue of the beam body due to large-amplitude and long-term vibrations, causing immeasurable economic losses and safety hazards.

[0003] Vortex-induced vibration is a regular self-limiting vibration phenomenon that occurs in bridges under low wind speed conditions, with characteristics such as low lock-in wind speed and high triggering frequency. This vibration phenomenon is caused by the formation of vortex shedding in the downstream during the process of the wind flow bypassing the bridge structure, generating periodic pulsating pressure, which in turn excites the vibration of the bridge structure. When the natural frequency of the bridge coincides with the vortex shedding frequency, the vortex-induced vibration will be significantly amplified, resulting in obvious vibration of the bridge structure.

[0004] In order to suppress wind-induced vibration, especially vortex-induced vibration, the following three types of vibration reduction measures are mainly adopted currently:

[0005] Active control measures: Through the collaborative work of external energy input, sensors and actuators, the response of the bridge is adjusted in real time to reduce vibration. For example, the use of smart materials and electromagnetic dampers, etc. Although active control measures can effectively suppress vibration to a certain extent, their systems are complex, costly, require continuous energy input and maintenance, which limits their wide application.

[0006] Passive control measures: Utilize devices such as tuned mass dampers (TMD), viscous dampers and liquid dampers, etc., to reduce vibration by changing the dynamic characteristics of the structure itself. These devices usually do not require external energy input, the structure is relatively simple, and the maintenance cost is relatively low. However, a single passive control measure often has difficulty coping with complex wind-induced vibration situations in practical applications, and its vibration reduction effect may be limited to a specific frequency range and vibration mode.

[0007] Aerodynamic control measures: By changing the aerodynamic shape of the bridge and optimizing its flow field around the bridge, the purpose of vibration reduction can be achieved. For example, adding fairings, fins or changing the cross-sectional shape of the bridge, etc. Such measures can be optimized during the bridge design stage and have the advantage of long-term effectiveness. However, the effect of aerodynamic control measures may be unstable due to changes in the actual wind environment and puts higher requirements on the design and construction of the bridge structure.

[0008] Although the above-mentioned vibration reduction measures have their own advantages, in the actual application of long-span bridges, a single vibration reduction measure usually difficult to achieve the expected effect. This is mainly because the wind speed, wind direction and turbulence intensity where the bridge is located vary widely, and a single measure is difficult to comprehensively deal with. The bridge structure usually has multiple vibration modes, and a single measure is difficult to simultaneously suppress the vibrations of all significant modes. Moreover, active control measures are costly and require energy input, the effect of passive measures is limited to a specific frequency range, and aerodynamic measures rely on the wind environment and design, lacking flexibility. The present utility model is studied and proposed in view of the deficiencies of the prior art. Summary of the utility model

[0009] Aiming at the technical problem that in the existing long-span bridge vortex-induced vibration, it is usually difficult to achieve the expected effect only by relying on a single vibration reduction measure as mentioned above.

[0010] The technical solution adopted by the present utility model to solve its technical problem is:

[0011] A novel tuned mass damper based on aerodynamic control technology, comprising a housing unit, a mass unit and an elastic unit. The number of the elastic units is at least one, and each elastic unit includes a cover plate and an airbag. The housing unit includes a housing, the cover plate is arranged on the housing, the airbag is located inside the housing, the mass unit is located inside the housing unit, one end of the airbag is connected to the cover plate, the other end of the airbag is connected to the mass unit, an air guide channel is arranged inside the airbag, and an air guide member communicating with the air guide channel is arranged on the cover plate. The mass unit can move inside the housing unit in a direction close to or away from the air guide member to compress and / or stretch the airbag, thereby reducing and / or increasing the volume of the air guide channel.

[0012] A novel tuned mass damper based on aerodynamic control technology as described above, the number of the elastic units is two, and the two elastic units are respectively arranged at both ends of the mass unit, and the air guide members correspond to the airbags one by one.

[0013] A novel tuned mass damper based on aerodynamic control technology as described above, the elastic unit further includes an elastic member, the elastic member is connected to the airbag, and the elastic member can restrict the elastic deformation of the airbag.

[0014] A novel tuned mass damper based on pneumatic control technology as described above, wherein a connection assembly is provided between the mass unit and each elastic unit.

[0015] A novel tuned mass damper based on pneumatic control technology as described above, wherein the connection assembly includes a pull rod, a first connection hole and a second connection hole. The first connection hole is provided on the elastic unit, the second connection hole is provided on the mass unit, and the pull rod is respectively connected to the first connection hole and the second connection hole.

[0016] A novel tuned mass damper based on pneumatic control technology as described above, each of the elastic units further includes a sealing buckle plate, the sealing buckle plate is hermetically connected to the airbag, and the first connection hole is provided on the sealing buckle plate.

[0017] A novel tuned mass damper based on pneumatic control technology as described above, the housing and the cover plate are integrally formed or detachably connected.

[0018] A novel tuned mass damper based on pneumatic control technology as described above, a sealing assembly is further provided between the cover plate and the airbag. The sealing assembly includes a protruding edge and a sealing hoop. The protruding edge is provided on the side of the cover plate facing the airbag. One end of the airbag away from the mass unit is located between the protruding edge and the sealing hoop, and the sealing hoop can fix one end of the airbag away from the mass unit on the protruding edge.

[0019] A novel tuned mass damper based on pneumatic control technology as described above, the mass unit includes a mass block, and a guiding assembly capable of restricting the movement path of the mass block in the housing is provided between the mass block and the housing.

[0020] A novel tuned mass damper based on pneumatic control technology as described above, the guiding assembly includes a plurality of mass block guiding magnets circumferentially spaced along the outer side wall of the mass block, and housing guiding magnets circumferentially spaced along the inner side wall of the housing. The mass block guiding magnets and the housing guiding magnets correspond one by one, and the polarity of each of the mass block guiding magnets is the same as the polarity of each of the housing guiding magnets.

[0021] The beneficial effects of the present utility model are:

[0022] A novel tuned mass damper based on pneumatic control technology of the present utility model includes a housing unit, a mass unit, and an elastic unit. Each elastic unit includes a cover plate and an airbag. The housing unit includes a housing. The cover plate is disposed on the housing. The airbag is located inside the housing. The mass unit is located inside the housing unit. An air guide channel is provided inside the airbag. An air guide member communicating with the air guide channel is provided on the cover plate. The mass unit can move inside the housing unit in a direction close to or away from the air guide member to compress and / or stretch the airbag, thereby reducing and / or increasing the volume of the air guide channel, and then realizing blowing and suction through the air guide member. On the basis of the principle of the original tuned mass damper, the idea of pneumatic control measures is incorporated. The air resistance of the air during the blowing and suction process of the airbag is used as its damping force. It is connected to the air guide member through an air duct, and the air flow is guided outside the box girder to suppress the generation of larger eddies by the gas turbulence effect, achieving the gas turbulence effect.

[0023] The following will further describe the present utility model in conjunction with the drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional cross-sectional view of the present utility model;

[0025] Figure 2 is an exploded schematic view of the present utility model;

[0026] Figure 3 is a perspective schematic view of the housing unit of the present utility model;

[0027] Figure 4 is a structural schematic view of the mass unit of the present utility model;

[0028] Figure 5 is a three-dimensional cross-sectional view of the elastic unit of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will describe in detail the embodiments of the present utility model in conjunction with the drawings.

[0030] As Figures 1 to 5As shown in the figure, a new type of tuned mass damper based on pneumatic control technology in this embodiment includes a housing unit 1, a mass unit 2, and an elastic unit 3. The number of the elastic units 3 is at least one. Each elastic unit 3 includes a cover plate 32 and an airbag 34. The housing unit 1 includes a housing 11. The cover plate 32 is arranged on the housing 11. The airbag 34 is located inside the housing 11. The mass unit 2 is located inside the housing unit 1. One end of the airbag 34 is connected to the cover plate 32, and the other end of the airbag 34 is connected to the mass unit 2. An air guide channel is arranged inside the airbag 34. An air guide member communicating with the air guide channel is arranged on the cover plate 32. The mass unit 2 can move inside the housing unit 1 in a direction close to or away from the air guide member to compress and / or stretch the airbag 34, thereby reducing and / or increasing the volume of the air guide channel, and then realizing blowing and suction through the air guide member. Specifically, the new type of tuned mass damper device in this embodiment is installed inside the box girder and is connected to the air guide member through an air duct to guide the air flow outside the box girder, and uses the gas turbulence effect to suppress the generation of large eddies, achieving the gas turbulence effect.

[0031] Based on the principle of the original TMD damper, the new type of tuned mass damper in this application incorporates the idea of pneumatic control measures. It mainly uses the air resistance during the blowing and suction process of the airbag as its damping force to achieve passive energy dissipation, and can achieve the purpose of vibration reduction without additional energy input. This device does not need to be equipped with intelligent control equipment, that is, the device completely adapts to complete the blowing and suction process of the airbag through self - adaptation.

[0032] Compared with the traditional TMD tuned mass damper, the present invention innovatively uses the airbag and air resistance as the source of damping for the TMD device. The vibration reduction mechanism of this device is not limited to the traditional TMD tuned mass damper. It innovatively introduces the turbulence effect of the air flow generated by the blowing and suction of the airbag on the flow field around the box girder - suppressing the generation of large eddies. Compared with displacement - type dampers, the mass - tuned damper has less application field limitations and can be directly applied to the mid - span where the displacement is the largest when the bridge generates vortex - induced vibration. The present invention has designs of various sizes, which can be mainly individual units or arranged in a multi - array form.

[0033] Moreover, with this design, on the basis of not affecting the function of the original tuned mass damper (TMD), the airbag and air resistance can be added as additional damping sources. The TMD itself reduces the vibration of the bridge by the mutual cancellation of the vibrations of the mass block and the elastic unit, and this function remains and is not affected. By introducing an airbag into the TMD and using the air resistance generated during the blowing and suction process of the airbag as an additional damping force, this additional damping mechanism can supplement and enhance the vibration reduction effect of the original TMD. This design provides a dual vibration reduction mechanism, thereby enhancing the overall vibration reduction effect.

[0034] In some other embodiments, the novel tuned mass damper of the present application is installed at the center of the split box girder and assembled in any combination of multiple modules to adapt to the layout at different spatial positions of the bridge.

[0035] As Figures 1 to 5 shown, the number of the elastic units 3 in this embodiment is two, and the two elastic units 3 are respectively arranged at both ends of the mass unit 2, and the air guiding members correspond to the air bags 34 one by one.

[0036] By arranging the two elastic units 3 at both ends of the mass unit 2 respectively, the forces applied to the mass unit can be evenly distributed. This balanced force distribution helps to avoid tilting or offset of the mass unit during movement and ensures its stable movement along the predetermined direction.

[0037] Specifically, the design of the two elastic units can effectively disperse stress, reduce unilateral wear, and extend the service life of the device.

[0038] Specifically, the configuration of the two elastic units at both ends of the mass unit can provide a double damping effect. When the mass unit moves, the two air bags simultaneously participate in the compression and stretching processes, enhancing the vibration damping effect of the air resistance. This double-end design can better adapt to various vibration modes, especially for efficient vibration damping in complex vibration environments.

[0039] Furthermore, the two air bags are respectively located at both ends of the mass unit, which can achieve symmetric air flow regulation. This symmetric design can regulate the air flow more evenly and enhance the efficiency of the air bags during the blowing and suction processes.

[0040] Preferably, each of the air guiding members is an air guiding hole, and the air guiding hole is connected to the air guiding pipe inside the box girder to guide the air flow outside the box girder to achieve the effect of air flow disturbance.

[0041] With such a design, the mass unit 2 can move in the housing 11 in a direction close to or away from the air guiding hole. This movement will compress and / or stretch the air bag 34, thereby reducing and / or increasing the volume of the air guiding channel. During the process of being compressed or stretched, the air bag 34 will blow and suck air through the air guiding hole. This blowing and suction process will guide the air flow outside the box girder through the air guiding pipe to achieve the effect of air flow disturbance. Moreover, due to its inertial effect, the mass unit 2 generates a reaction force against the vibration of the bridge, reducing the amplitude of the bridge.

[0042] In some other embodiments, the number of the elastic units 3 can be multiple, which are respectively arranged on the outer side wall of the mass unit 2, and a suitable design can be selected according to actual needs.

[0043] As Figures 1 to 5As shown, the elastic unit 3 of this embodiment further includes an elastic member 35. The elastic member 35 is connected to the airbag 34. The elastic member 35 can restrain the elastic deformation of the airbag 34. The introduction of the elastic member 35 can help better restrain the deformation of the airbag 34, enabling it to work within the designed range and avoiding excessive expansion or compression. This not only protects the airbag material from premature aging or damage but also ensures that the deformation of the airbag under force is more controllable and predictable. Further, the elastic member 35 can help the airbag 34 quickly return to its original state after deformation, thus accelerating the dynamic response of the system.

[0044] Specifically, the airbag 34 itself is relatively soft. By the restraint of the elastic member 35, the stiffness of the system can be increased, making it more stable when dealing with large vibrations. This design can effectively improve the anti-fatigue performance and service life of the system.

[0045] Further, the elastic member 35 works together with the airbag 34 to form a dual elastic mechanism. When the system is vibrated, the elastic member 35 can absorb part of the energy and provide an additional damping effect through its own elastic restoring force. This dual mechanism can more effectively reduce vibrations and improve the vibration damping effect.

[0046] Preferably, the elastic member 35 is an elastic spring. The elastic spring is sleeved outside the airbag 34. Using the spring to hoop outside the airbag can play a role in restraining the deformation of the airbag during contraction and expansion, with the advantages of simple structure and convenient operation.

[0047] As Figures 1 to 5 shown, a connection component is provided between the mass unit 2 and each elastic unit 3 of this embodiment. Through the connection component, the mass unit 2 and the elastic unit 3 can achieve a firm connection, avoiding loosening or falling off during the vibration process.

[0048] Moreover, the connection component helps to transfer the motion and force of the mass unit 2 to the elastic unit 3, thus more effectively activating the vibration damping function of the elastic unit.

[0049] Further, the connection component ensures the coordinated movement of the mass unit 2 and the elastic unit 3, thus avoiding unnecessary friction and wear between components and extending the service life of the system.

[0050] Specifically, through the connection component, modular design can be achieved, enabling each unit to be flexibly disassembled and replaced. This helps to simplify the maintenance and upgrade work of the system, improve work efficiency. Moreover, the design of the connection component can be adjusted according to specific requirements, such as changing the rigidity or damping coefficient of the connection, so as to adjust the overall performance of the system.

[0051] Preferably, the connection component of this embodiment includes a pull rod 24, a first connection hole, and a second connection hole 23. The first connection hole is provided on the elastic unit 3, and the second connection hole 23 is provided on the mass unit 2. The pull rod 24 is respectively connected to the first connection hole and the second connection hole 23. By connecting the first connection hole and the second connection hole 23 with the pull rod 24, a firm connection between the mass unit 2 and the elastic unit 3 can be ensured, preventing loosening or falling off during vibration.

[0052] Specifically, the design of the pull rod 24, the first connection hole, and the second connection hole 23 makes the system more modular, easier to disassemble and replace, convenient for maintenance and upgrade. The length of the pull rod and the position of the connection hole can be adjusted according to specific requirements, thereby changing the dynamic characteristics and vibration damping effect of the system.

[0053] Specifically, the design of the pull rod 24 makes the installation process simpler and faster. It only needs to insert the pull rod into the first connection hole and the second connection hole 23 respectively and fix them. Moreover, the structure of the pull rod connection component is relatively simple, easy to inspect and maintain, reducing the maintenance cost and workload.

[0054] Taking the number of elastic units 3 as one as an example, one end of the pull rod 24 is connected to the first connection hole, and the other end is connected to the second connection hole 23, so as to connect the elastic unit 3 and the mass unit 2.

[0055] Taking the number of elastic units 3 as two as an example, the second connection hole 23 is a through hole. The pull rod 24 is inserted into the second connection hole 23, and both ends of the pull rod 24 extend out of both ends of the second connection hole 23, and then are connected to the corresponding elastic units 3, so as to connect the elastic unit 3 and the mass unit 2.

[0056] In some other embodiments, the pull rod 24 and the mass unit 2 are of an integrally formed structure, which can save the structure of the second connection hole 23. The pull rod 24 is connected to the first connection hole, so as to connect the elastic unit 3 and the mass unit 2.

[0057] As Figures 1 to 5 shown, each elastic unit 3 of this embodiment further includes a sealing buckle plate 36. The sealing buckle plate 36 is hermetically connected to the airbag 34 to ensure that the gas inside the airbag will not leak. By using the sealing buckle plate 36, the sealing performance of the airbag 34 is greatly improved, avoiding the decrease in the vibration damping effect caused by air leakage. Moreover, the first connection hole is provided on the sealing buckle plate 36. By connecting the mass unit 2 and the elastic unit 3 with the pull rod 24, the sealing buckle plate 36 not only plays a sealing role, but also provides a firm connection foundation, enhancing the stability of the overall structure, ensuring the firmness and reliability of the connection, preventing loosening or falling off during vibration, and effectively avoiding damage to the airbag.

[0058] Specifically, the first connection holes on the sealing buckle plate 36 can effectively transfer the force of the mass unit 2 to the elastic unit 3, thereby better activating the vibration damping function of the elastic unit, optimizing the force transfer path, and improving the vibration damping efficiency of the system.

[0059] Specifically, the combination of the sealing buckle plate 36 and the airbag 34 increases the overall stiffness of the system, making it more stable when dealing with large amplitudes and frequent vibrations, reducing excessive deformation of the airbag, and through a firm connection, the system can maintain a more stable state during vibration, improving the vibration damping effect.

[0060] The sealing buckle plate 36 provides a firm and sealed connection interface, reducing the wear of the airbag 34 caused by friction or external forces, thereby extending the service life of the airbag and the entire system.

[0061] As Figures 1 to 5 shown, the housing 11 and the cover plate 32 of this embodiment are detachably connected.

[0062] Preferably, the elastic unit 3 further includes a fixing member 31 to enable the detachable connection between the housing 11 and the cover plate 32.

[0063] The detachable connection design between the housing 11 and the cover plate 32 makes the installation process more convenient. Just fix the cover plate 32 to the housing 11 and then connect the two through the fixing member 31, greatly reducing the installation time and complexity.

[0064] When maintenance or replacement of internal components is required, simply remove the cover plate 32 to quickly access the interior, improving the maintenance efficiency of the system.

[0065] In some other embodiments, the housing 11 and the cover plate 32 are integrally formed structures. The integrally formed structure eliminates the connection interface between the housing 11 and the cover plate 32, thereby greatly improving the strength and stiffness of the overall structure, making it more stable when dealing with external pressure and load. The overall forming design reduces possible connection errors and loosening conditions, improving the stability and reliability of the system.

[0066] As Figures 1 to 5 shown, a sealing component is further provided between the cover plate 32 and the airbag 34 of this embodiment. The sealing component includes a protruding edge 37 and a sealing hoop 33. The protruding edge 37 is provided on the side of the cover plate 32 facing the airbag 34, and one end of the airbag 34 away from the mass unit 2 is located between the protruding edge 37 and the sealing hoop 33.

[0067] Specifically, the protruding edge 37 is provided on the side of the cover plate 32 facing the airbag 34. Its main function is to provide a fixing and supporting structure, enabling the airbag 34 to be stably connected to the cover plate 32. Then, the airbag 34 is clamped by the sealing ring hoop 33, so that one end of the airbag 34 away from the mass unit 2 is fixed on the protruding edge 37, ensuring that the airbag 34 will not shift or loosen due to vibration or external forces during use. Moreover, the design of clamping the end of the airbag 34 by the protruding edge 37 and the sealing ring hoop 33 can effectively improve the sealing effect between the cover plate 32 and the airbag 34, reducing the risk of gas leakage.

[0068] Specifically, the sealing ring hoop 33 and the protruding edge 37 not only play a fixing role but also can provide an additional sealing function. Through the double-sealing design of the sealing ring hoop 33 and the protruding edge 37, the sealing performance of the airbag 34 is ensured, effectively preventing gas leakage and further ensuring the sealing performance of the airbag 34.

[0069] Specifically, the design of the sealing ring hoop 33 makes the installation and disassembly of the airbag 34 more convenient. When the airbag 34 needs to be replaced, only the sealing ring hoop 33 needs to be loosened, and then the old airbag can be easily removed and a new airbag can be installed, simplifying the replacement process.

[0070] Preferably, the end of the elastic member 35 is located between the airbag 34 and the sealing ring hoop 33. With such a design, the protruding edge 37 and the sealing ring hoop 33 can act on the airbag 34 and the elastic member 35 together, ensuring the airtightness of the device while providing a reliable connection between the cover plate 32 and the elastic member 35.

[0071] As Figures 1 to 5 shown, the mass unit 2 of this embodiment includes a mass block 21. A guiding assembly that can restrict the movement path of the mass block 21 in the housing 11 is provided between the mass block 21 and the housing 11. With such a design, it is ensured that the mass block in the TMD-blowing and suction air disturbance damping device runs smoothly along the correct movement path.

[0072] Preferably, the guiding assembly of this embodiment includes a plurality of mass block guiding magnets 22 circumferentially and spacedly arranged along the outer sidewall of the mass block 21, and housing guiding magnets 12 circumferentially and spacedly arranged along the inner sidewall of the housing 11. The mass block guiding magnets 22 and the housing guiding magnets 12 correspond to each other one by one, and the polarity of each mass block guiding magnet 22 is the same as the polarity of each housing guiding magnet 12.

[0073] The two guiding magnets (housing guiding magnet 12 and mass block guiding magnet 22) at the corresponding positions jointly ensure the correct movement path of the mass block in the TMD-blowing and suction air disturbance damping device;

[0074] Specifically, a plurality of mass block guiding magnets 22 are circumferentially spaced along the outer sidewall of the mass block 21 to ensure that the mass block is always subjected to uniform magnetic force constraints during movement. The housing guiding magnets 12 are circumferentially spaced along the inner sidewall of the housing 11 and correspond one by one to the mass block guiding magnets 22 to form a guiding magnet array of the system. Since the polarities of the magnets are the same, the repulsive force will be generated between the corresponding mass block guiding magnet 22 and the housing guiding magnet 12. This repulsive force can effectively constrain the movement path of the mass block 21 and prevent it from deviating from the predetermined trajectory.

[0075] Specifically, the guiding magnets guide the mass block 21 to move along a specified path through magnetic force. The magnetic force constraint provides a contactless guiding mechanism, reducing mechanical friction and vibration, making the movement of the mass block 21 smoother, ensuring the accuracy of movement, and avoiding the wear problem of traditional mechanical guiding components, thereby extending the service life of the system.

[0076] Furthermore, the repulsive force generated by magnets with the same polarity can effectively offset external interference and vibration, ensuring that the mass block 21 can maintain stable movement in various working environments.

[0077] Preferably, the installation and adjustment of the guiding magnets are relatively simple without complex mechanical components. The magnets at corresponding positions can be quickly fixed and adjusted. When the movement path needs to be adjusted, only the spacing and position of the guiding magnets need to be adjusted, improving the flexibility and adaptability of the system.

[0078] Preferably, the length dimension of the housing guiding magnet 12 in this embodiment is greater than the length dimension of the mass block guiding magnet 22.

[0079] Specifically, the housing guiding magnet 12 has a larger length, providing a longer guiding area, so that the mass block 21 is always within the range of magnetic force constraints during movement, ensuring the stability of its movement path. Moreover, the longer housing guiding magnet 12 can provide a uniform magnetic field within a larger range, making the movement of the mass block 21 smoother and reducing the movement error caused by uneven magnetic force distribution.

[0080] In addition, the guiding magnet with a larger length can better limit the unexpected movement of the mass block 21 and reduce the reduction of the damping effect caused by movement interference.

[0081] As described above, multiple implementation manners are provided in combination with specific content, and it is not determined that the specific implementation of this application is only limited to these descriptions. Any implementation similar or identical to the method and structure of this application, or any technical deduction or replacement made under the premise of the concept of this application, should be regarded as the protection scope of this application.

Claims

1. A new tuned mass damper based on pneumatic control technology, characterized in that: The invention comprises a shell unit (1), a mass unit (2) and an elastic unit (3), wherein the number of the elastic unit (3) is at least one, and each of the elastic units (3) comprises a cover plate (32) and an airbag (34). The shell unit (1) comprises a shell (11), wherein the cover plate (32) is arranged on the shell (11), wherein the airbag (34) is located in the shell (11), wherein the mass unit (2) is located in the shell unit (1), wherein one end of the airbag (34) is connected to the cover plate (32), and the other end of the airbag (34) is connected to the mass unit (2), wherein an air guide channel is arranged in the airbag (34), wherein an air guide component communicating with the air guide channel is arranged on the cover plate (32), and wherein the mass unit (2) is capable of moving in the shell unit (1) in a direction approaching or moving away from the air guide component to compress and / or stretch the airbag (34), thereby reducing and / or increasing the volume of the air guide channel.

2. A novel tuned mass damper based on pneumatic control technology according to claim 1, characterized in that: The number of the elastic units (3) is two, and the two elastic units (3) are respectively arranged at two ends of the mass unit (2), and the air guide components correspond to the airbags (34) one by one.

3. A novel tuned mass damper based on pneumatic control technology according to claim 1, characterized in that: The elastic unit (3) further comprises an elastic member (35), wherein the elastic member (35) is connected to the airbag (34), and the elastic member (35) is capable of restricting the elastic deformation of the airbag (34).

4. The novel tuned mass damper based on pneumatic control technology according to claim 1 is characterized in that: A connecting component is provided between the mass unit (2) and each elastic unit (3).

5. A novel tuned mass damper based on pneumatic control technology according to claim 4, characterized in that: The connection assembly comprises a pull rod (24), a first connection hole and a second connection hole (23), the first connection hole being arranged on the elastic unit (3), the second connection hole (23) being arranged on the mass unit (2), and the pull rod (24) being connected to the first connection hole and the second connection hole (23) respectively.

6. A novel tuned mass damper based on pneumatic control technology according to claim 5, characterized in that: Each of the elastic units (3) further comprises a sealing buckle plate (36), the sealing buckle plate (36) being sealingly connected to the airbag (34), and the first connection hole being arranged on the sealing buckle plate (36).

7. The novel tuned mass damper based on pneumatic control technology according to claim 1 is characterized in that: The housing (11) and the cover plate (32) are integrally formed or detachably connected.

8. The novel tuned mass damper based on pneumatic control technology according to claim 1 is characterized in that: A sealing assembly is further provided between the cover plate (32) and the airbag (34), the sealing assembly comprising a protruding edge (37) and a sealing ring hoop (33); the protruding edge (37) is provided on a side of the cover plate (32) facing the airbag (34); an end of the airbag (34) away from the mass unit (2) is located between the protruding edge (37) and the sealing ring hoop (33); the sealing ring hoop (33) is capable of fixing the end of the airbag (34) away from the mass unit (2) on the protruding edge (37).

9. The novel tuned mass damper based on pneumatic control technology according to claim 1 is characterized in that: The mass unit (2) comprises a mass block (21), and a guide component capable of constraining a movement path of the mass block (21) within the housing (11) is provided between the mass block (21) and the housing (11).

10. A novel tuned mass damper based on pneumatic control technology according to claim 9, characterized in that: The guide assembly comprises a plurality of mass block guide magnets (22) arranged at intervals in the circumferential direction along the outer wall of the mass block (21), and shell guide magnets (12) arranged at intervals in the circumferential direction along the inner wall of the shell (11), wherein the mass block guide magnets (22) correspond to the shell guide magnets (12) one by one, and the polarity of each mass block guide magnet (22) is the same as the polarity of each shell guide magnet (12).

Images