CN113982137A - Inertial volume type multidirectional tuning energy-absorbing vibration-damping device - Google Patents
Inertial volume type multidirectional tuning energy-absorbing vibration-damping device Download PDFInfo
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- CN113982137A CN113982137A CN202111542789.XA CN202111542789A CN113982137A CN 113982137 A CN113982137 A CN 113982137A CN 202111542789 A CN202111542789 A CN 202111542789A CN 113982137 A CN113982137 A CN 113982137A
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- inerter
- tuning
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- energy
- absorbing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
Abstract
The invention belongs to the technical field of engineering structure vibration reduction, and particularly relates to a multidirectional tuning type energy-absorbing vibration-reducing device. An inerter type multidirectional tuning energy-absorbing vibration-damping device comprises an inerter device and a mass tuning device which are arranged in a main body frame; the mass tuning device is connected with the inertial volume device; the inerter and the mass tuning device are connected with the main body frame through elastic elements. The invention realizes the inertia capacity effect, improves the mass tuning mode of the vibration damper and improves the energy absorption and energy consumption efficiency of the vibration damper by changing the structural form of the mass block.
Description
Technical Field
The invention belongs to the technical field of engineering structure vibration reduction, and particularly relates to a multidirectional tuning type energy-absorbing vibration-reducing device.
Background
In recent years, with the development of socio-economic, high-rise and super high-rise buildings have been developed in large numbers, and high-rise structures have also been constructed in large numbers. Due to the characteristics of large flexibility and low damping of high-rise and high-rise structures, the traditional design method is difficult to well balance the economical efficiency and the requirements of earthquake resistance and wind resistance under the action of strong wind and earthquake. How to further improve the safety of the engineering structure under the action of external excitation and meet the requirements of use functions and ensure the engineering economy is widely concerned by people.
The vibration damping control technology is regarded as an economic technical means for reducing the vibration response of the engineering structure, the reasonable and effective vibration damping control measures can properly reduce the dynamic response of high-rise and high-rise structures under the excitation of wind vibration, earthquake and the like, and the disaster prevention capability of the structures is obviously improved on the premise that the engineering cost is controllable.
A conventional Tuned Mass Damper (TMD) system is a vibration damping control system consisting of three major components, a mass, an elastic element and a damping element. When external force is applied to the main structure, the tuned mass damper system can be driven to vibrate together, and energy is transferred from the main structure to the mass block and then dissipated by the energy dissipation damping element through reasonable tuning design, so that the effect of inhibiting the vibration of the main structure is achieved.
However, the existing mainstream tuned mass damper is designed based on linear stiffness and damping, can only generate a narrow-band vibration absorption effect for a target frequency, has poor robustness, and cannot effectively meet the multidimensional vibration reduction requirement of the acting direction in an actual situation. Once the vibration frequency of the main structure has a certain deviation from the theoretical design value, or the main structure has rigidity degradation under the action of earthquake or power, the vibration reduction effect of the traditional linear tuned mass damper is obviously reduced. In order to improve the vibration damping effect, the traditional tuned mass damper based on linear stiffness and damping is often required to have large tuned mass, or other limiting elements are usually needed to control the stroke of the traditional tuned mass damper, so that the design and construction costs are increased, the application range is small, and the traditional tuned mass damper is difficult to realize in practical engineering.
Disclosure of Invention
The invention aims to overcome the defects of the traditional Tuned Mass Damper (TMD) system and provide an inertial volume type multidirectional tuned energy-absorbing vibration-damping device. The device of the invention not only can reduce the mass of the required mass block, but also can control the vibration in multiple directions so as to reduce the dynamic response of high-rise and high-rise structures under the action of wind load, earthquake and the like and achieve the results of energy consumption and vibration reduction; according to the invention, through coupling the tuned mass damper system and the inertial volume system, the energy consumption efficiency of the system is improved without adding extra tuned mass, and the vibration reduction effect is obviously improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: an inerter type multidirectional tuning energy-absorbing vibration-damping device comprises an inerter device and a mass tuning device which are arranged in a main body frame; the mass tuning device is connected with the inertial volume device; the inerter and the mass tuning device are connected with the main body frame through elastic elements.
Furthermore, the mass tuning device comprises a box body, wherein an outer bearing is arranged outside the box body; the outer bearing is connected with the main body frame through a second spring.
Further, the inerter comprises a rotating disc; the rotating disc is fixed in the box body through a central rotating shaft.
Furthermore, the inerter device comprises a pulley turntable and a ball screw; two ends of the ball screw are fixed on the inner side of the pulley turntable; and a nut of the ball screw is connected with the central rotating shaft through a transmission device.
Furthermore, the upper part of the pulley turntable is connected with a sliding device through a connecting rod, and the pulley turntable translates in a plane under the guidance of the sliding device.
Furthermore, the transmission device comprises a first bevel gear and a second bevel gear; the first umbrella-shaped gear is sleeved on the nut of the ball screw; a fixing plate is arranged at the tail part of the first bevel gear, and the lower end of the fixing plate is fixed at the top of the box body; the first bevel gear is connected with the fixing plate through a bearing, and the ball screw penetrates through the bearing; the second bevel gear is connected with the central rotating shaft through another bearing fixed at the top of the box body; the first bevel gear and the second bevel gear are meshed.
Furthermore, two ends of the sliding device are embedded in the annular groove and do circular motion under the guiding action of the annular groove.
Furthermore, the pulley turntable is connected with the connecting rod through a ball pulley, so that the pulley turntable can do circular motion along the connecting rod.
Furthermore, the mass tuning device also comprises a plurality of damping energy dissipaters; the energy dissipation damping devices are arranged at equal intervals, one end of each energy dissipation damping device is fixed on the outer bearing, and the other end of each energy dissipation damping device is connected with the inertial container device through the adapter rod.
Furthermore, a first spring is arranged between the adapter rod and the frame upright post.
The invention has the following beneficial effects:
(1) under the action of wind load and earthquake, when the structure generates large-amplitude vibration, the mass block can move towards all directions in the plane, and the multidirectional vibration reduction control of the structure is realized;
(2) the mass unit inside the box body is designed into a rotatable and detachable disc shape. The shape, size and number of the disks can be adjusted according to the frequency response characteristics of the controlled structure and the control target, the disks rotate while translating, and the purpose of temporary rotation energy storage, namely inertial capacity, is realized by using the rotational inertia of the disks. The temporarily stored kinetic energy is further absorbed and dissipated by the damper by utilizing the characteristics of the inertial volume element, so that the efficiency of vibration reduction and energy consumption is improved;
(3) the device has the advantages that the vibration reduction control in multiple directions shares one mass block, the mass block and the inertial capacity unit are coupled into a whole, the total mass of the vibration reduction device is effectively reduced, and the additional load generated on a main structure is reduced;
(4) the device controls the multidirectional vibration reduction of the structure, and effectively solves the problem of structural safety caused by uncertainty of the load direction;
(5) the device also has the characteristics of simple structure, convenient processing, convenient installation, lower cost and the like.
Drawings
FIG. 1 is a perspective view of an inerter-type tuned energy-absorbing vibration-damping device;
FIG. 2 is a front view of an inerter-type tuned energy-absorbing vibration-damping device;
FIG. 3 is a side view of a inerter-type tuned energy absorbing and damping device;
FIG. 4 is a schematic view of an inerter-type tuned energy-absorbing vibration damping device;
FIG. 5 is a cross-sectional view of a mass;
FIG. 6 is a schematic view of the connection of the ring groove, the pulley turntable and the ball screw;
FIG. 7 is a cross-sectional view of the ball screw and first bevel gear connection;
in the figure: 1. a top plate; 2. an annular groove; 3. a guide bar; 4. a connecting rod; 5. a pulley turntable; 6. a ball screw; 7. a first bevel gear; 8. a second bevel gear; 9. a mass block; 10. a first spring; 11. an energy dissipation damper; 12. a second spring; 13. a box body; 14. an omni wheel; 15. an outer bearing; 16. a central rotating shaft; 17. rotating the disc; 18. a frame upright; 19 an adapter rod; 20. a fixing plate; 21. and a bearing.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The structure of the inertial volume type multidirectional tuning energy-absorbing vibration-damping device provided by the embodiment is shown in fig. 1-4, and mainly comprises: the frame, and the inertial container device and the mass tuning device which are arranged in the frame.
The frame is composed of a top plate 1 and four frame upright posts 18 supporting the top plate 1, and the top plate 1 is fixedly connected with the frame upright posts 18.
The mass tuning device comprises a mass 9, an energy dissipating damper 11, a second spring 12, an omni wheel 14. The mass 9 is composed of a box body 13, an outer bearing 15 outside the box body and a central rotating shaft 16 inside the box body.
The box 13 is made of metal plate or reinforced fiber material, and is cylindrical, and the side is provided with two symmetrical openings for installing the rotating disc. The center of the top is provided with a mounting hole for fixing the bearing. The bottom of the box body 13 is provided with a plurality of omnidirectional wheels 14, which can enable the mass block to move in any direction in a plane.
As shown in fig. 5, a plurality of rotating disks 17 are provided inside the case 13 of the mass 9. Small platforms for supporting the rotating discs 17 are welded at intervals on the central rotating shaft 16. The rotating disc 17 is formed by splicing two semicircular discs, and each semicircular disc is provided with a mounting hole and is respectively fixed on the small platform through bolt connection. The shape, size and quantity of the rotating discs 17 can be adjusted according to the frequency response characteristics and the control target of the controlled structure, so that the purposes of controlling the mass and the rotational inertia are achieved, and the universality of the device is improved.
The upper end of the central rotating shaft 16 is provided with a deep groove ball steel bearing with proper parameters, so that the inner diameter of the bearing, the outer diameter of the central rotating shaft 16 and the outer diameter of the second bevel gear 8 are the same. The deep groove ball steel bearing is fixed in the center of the top of the box body 13, the inner diameter of the bearing is the same as the outer diameter of the second bevel gear 8, the inner wall of the bearing is welded with the bevel gear 8, and the outer wall of the bearing is connected with the box body 13 in a welding mode.
As shown in fig. 1 and 6, the inerter device is composed of an annular groove 2, a pulley turntable 5, a ball screw 6, a rotating disk 17 and the like. The annular groove 2 is fixed to the lower surface of the top plate 1. A guide rod 3 with a slide block is embedded in the annular groove 2, and the slide block is connected with a lower connecting rod 4. The guide rod 3 can rotate along the annular groove 2, and the sliding block can move back and forth along the guide rod 3 along with the movement of the lower component, so that the sliding block can do plane movement. The connecting rod 4 is connected with the pulley turntable 5 through a ball pulley, so that the pulley turntable 5 can rotate around the connecting rod 4.
A first bevel gear 7 is sleeved on a screw nut on the ball screw 6, a fixing plate 20 is arranged behind the first bevel gear 7, a hole is arranged in the center of the fixing plate 20, and the lower end of the fixing plate 20 is fixedly connected with the top of the box body 13 through welding or bolts. The tail part of the first bevel gear 7 is provided with a bearing 21, the bearing 21 is embedded in a hole in the center of the fixing plate 20, the inner ring of the bearing 21 is fixedly connected with the tail part of the first bevel gear 7, the outer ring of the bearing is fixedly connected with the fixing plate 20, the ball screw 6 penetrates through the inner ring of the bearing 21, and two ends of the ball screw are fixed on the inner side of the pulley turntable 5. When the screw nut rotates on the ball screw 6, the first bevel gear 7 is driven to rotate, and the relative positions of the first bevel gear 7, the fixed plate 20 and the box body 13 are always kept unchanged because the tail part of the first bevel gear 7 is connected with the fixed plate 20 through the bearing 21.
The first bevel gear 7 is meshed with the second bevel gear 8, and the second bevel gear 8 is fixed in the center of the top of the box body 13, so that the first bevel gear 7 and the second bevel gear 8 can be always meshed. The first bevel gear 7 is rotatable on the ball screw 6 in the same direction. When the first bevel gear 7 rotates along the ball screw 6, the second bevel gear 8 is driven to rotate, and the second bevel gear 8 rotates to drive the central rotating shaft 16 and the rotating disk 17 to rotate.
And a closed small hook is welded at the joint of the two ends of the first spring 10, the energy dissipation damper 11 and the second spring 12 respectively. Four sets of second springs 12 are connected between the frame uprights 18 and large bearings 15 fitted outside the box 13. One end of each of the four groups of first springs 10 is connected with a frame upright post 18, and the other end is connected with the energy dissipation damper 11 and the connecting rod 4 in parallel through an adapter rod 19. The adapter rod 19 is a vertical rod, the lower end of one side of the adapter rod is connected with the energy dissipation damper 11, the upper end of the side of the adapter rod is connected with the connecting rod 4 through a connecting rod, and the other side of the adapter rod is connected with the first spring 10. The connecting rod 4 and the energy dissipation damper 11 are connected in parallel and then connected in series with the first spring 10, and the first spring 10 plays a role in increasing the degree of freedom.
One end of the energy dissipation damper 11 is connected with the adapter rod 19, and the other end is connected with the outer bearing 15. The included angle of every two adjacent groups of first springs is 90 degrees, and the included angle of every two adjacent groups of energy dissipation dampers is 90 degrees. If the energy dissipation damper 11 absorbs and dissipates energy, the mass block 9 moves towards any direction in the horizontal plane to cause the second spring 12 and the first spring 10 to elastically deform and store energy together with the rotating disc 17.
The working principle of the inertial volume type multidirectional tuning energy-absorbing vibration-damping device provided by the embodiment is elaborated as follows:
when the box body 13 moves in a plane, the fixed plate 20 moves along with the box body 13 due to the fact that the lower end of the fixed plate 20 is fixedly connected with the top of the box body 13, when the box body 13 moves in the plane, the fixed plate 20 moves together with the box body 13, the movement of the fixed plate 20 drives the ball screw 6 penetrating through the fixed plate to move in the plane, and the first bevel gear 7 is connected with the nut of the ball screw 6, so that the first bevel gear 7 rotates when the screw nut translates along the screw rod. The rear end of the first bevel gear 7 is fixedly connected with the fixed plate 20, so that the relative positions of the first bevel gear 7, the fixed plate 20 and the box body 13 are kept unchanged, the first bevel gear 7 drives the second bevel gear 8 to rotate through gear meshing, and the second bevel gear 8 drives the central rotating shaft 16 and the rotating disc 17 to rotate. In addition, as the ball screw 6 is fixed with the pulley turntable 5, the movement of the ball screw 6 in the plane drives the pulley turntable 5 to move. The upper end of the pulley turntable 5 is connected with the lower end of the connecting rod 4 through a ball pulley, the pulley turntable 5 is consistent with the connecting rod 4 in translation, and meanwhile, the pulley turntable 5 can rotate around the connecting rod 4. When the connecting rod 4 translates, the connecting rod 4 moves axially along the guide rod 3 through the sliding block, and the guide rod 3 can rotate in the annular groove 2, so that the connecting rod 4 can be arranged at any position in the plane of the annular groove.
Because connecting rod 4 is connected with changeover bar 19, the removal of connecting rod 4 drives changeover bar 19 and removes, and changeover bar 19's removal causes first spring 10 to take place deformation, and the deformation energy storage of first spring 10 transmits for energy dissipation attenuator 11, and then absorbs the dissipation by energy dissipation attenuator 11, realizes being used to holding the damping from this.
Meanwhile, when the box body 13 moves in a plane, the second spring 12 is caused to deform and store energy together with the rotating disk 17, and then the energy is absorbed and dissipated by the energy dissipation damper 11.
In the inertial-capacitive multidirectional tuning type energy-absorbing vibration-damping device provided by the embodiment, the frequency of the tuning mass structure is controlled by the apparent mass of the mass block 9 and the rigidity of the second spring 12, and the mass of the mass block can be designed according to the frequency response characteristics of the controlled structure and the optimization target. The inertia coefficient of the inertia capacity element is related to the shape size and the number of the rotating disks 17, and the rotation inertia can be changed by adjusting the shape size and the number of the rotating disks 17, so that the required inertia capacity effect is achieved. The mass block 9 is simultaneously used as a component of the mass tuning device and the inertial container device, the mass tuning device and the inertial container device are organically coupled together, and the corresponding inertia force can be used for storing the kinetic energy of an external structure and transferring the kinetic energy to the damping unit when the rotating disc 17 rotates, so that the energy consumption efficiency of the structure is improved, and the vibration of the main structure is reduced. The invention realizes the inertia capacity effect by changing the mass block structure, improves the mass tuning mode of the vibration damper and improves the energy absorption and energy consumption efficiency of the vibration damper.
Claims (10)
1. An inerter type multidirectional tuning energy-absorbing vibration-damping device comprises an inerter device and a mass tuning device which are arranged in a main body frame; the method is characterized in that: the mass tuning device is connected with the inertial volume device; the inerter and the mass tuning device are connected with the main body frame through elastic elements.
2. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 1, characterized in that: the mass tuning device comprises a box body, wherein an outer bearing is arranged outside the box body; the outer bearing is connected with the main body frame through a second spring.
3. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 2, characterized in that: the inerter device comprises a rotating disc; the rotating disc is fixed in the box body through a central rotating shaft.
4. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 3, characterized in that: the inerter device comprises a pulley turntable and a ball screw; two ends of the ball screw are fixed on the inner side of the pulley turntable; and a nut of the ball screw is connected with the central rotating shaft through a transmission device.
5. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 4, characterized in that: the upper part of the pulley turntable is connected with a sliding device through a connecting rod, and the pulley turntable translates in a plane under the guidance of the sliding device.
6. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 4, characterized in that: the transmission device comprises a first bevel gear and a second bevel gear; the first umbrella-shaped gear is sleeved on the nut of the ball screw; a fixing plate is arranged at the tail part of the first bevel gear, and the lower end of the fixing plate is fixed at the top of the box body; the first bevel gear is connected with the fixing plate through a first bearing, and the ball screw penetrates through the first bearing; the second bevel gear is connected with the central rotating shaft through a second bearing; the second bearing is fixed at the top of the box body; the first bevel gear and the second bevel gear are meshed.
7. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 5, characterized in that: and two ends of the sliding device are embedded in the annular groove and do circular motion under the guiding action of the annular groove.
8. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 5, characterized in that: the pulley turntable is connected with the connecting rod through a ball pulley, so that the pulley turntable can do circular motion along the connecting rod.
9. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 8, characterized in that: the mass tuning device also comprises a plurality of damping energy dissipation devices; the energy dissipation damping devices are arranged at equal intervals, one end of each energy dissipation damping device is fixed on the outer bearing, and the other end of each energy dissipation damping device is connected with the inertial container device through the adapter rod.
10. The inerter-type multidirectional tuning type energy-absorbing and vibration-damping device according to claim 9, characterized in that: a first spring is arranged between the adapter rod and the frame upright post.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021102145382 | 2021-02-25 | ||
| CN202110214538.2A CN112814191A (en) | 2021-02-25 | 2021-02-25 | Inertial volume type multidirectional tuning energy-absorbing vibration-damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113982137A true CN113982137A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110214538.2A Withdrawn CN112814191A (en) | 2021-02-25 | 2021-02-25 | Inertial volume type multidirectional tuning energy-absorbing vibration-damping device |
| CN202111542789.XA Pending CN113982137A (en) | 2021-02-25 | 2021-12-16 | Inertial volume type multidirectional tuning energy-absorbing vibration-damping device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110214538.2A Withdrawn CN112814191A (en) | 2021-02-25 | 2021-02-25 | Inertial volume type multidirectional tuning energy-absorbing vibration-damping device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114321249B (en) * | 2022-01-14 | 2022-11-29 | 华南农业大学 | Three-dimensional spiral unit with inertial volume effect, mechanical metamaterial and application of three-dimensional spiral unit |
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2021
- 2021-02-25 CN CN202110214538.2A patent/CN112814191A/en not_active Withdrawn
- 2021-12-16 CN CN202111542789.XA patent/CN113982137A/en active Pending
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| CN112814191A (en) | 2021-05-18 |
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