CN112177188A - Device for arranging frequency modulation mass damper far away from vibration point - Google Patents
Device for arranging frequency modulation mass damper far away from vibration point Download PDFInfo
- Publication number
- CN112177188A CN112177188A CN202011201177.XA CN202011201177A CN112177188A CN 112177188 A CN112177188 A CN 112177188A CN 202011201177 A CN202011201177 A CN 202011201177A CN 112177188 A CN112177188 A CN 112177188A
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- China
- Prior art keywords
- wire rope
- mass damper
- pulley
- steel wire
- frequency modulation
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to the technical field of building shock absorption, and discloses a device for arranging a frequency modulation mass damper far away from a vibration point. The invention comprises a lifting lug, a first steel wire rope, a concentric pulley block, a second steel wire rope, a horizontal frequency modulation mass damper, a tension spring and a linear guide rail, wherein the concentric pulley block is suspended and fixed on the ground, the concentric pulley block comprises a central shaft, a first pulley and a second pulley which are rotatably arranged on the central shaft, the first steel wire rope is connected with the lifting lug and the concentric pulley block, and the second steel wire rope is connected with the concentric pulley block and the horizontal frequency modulation mass damper. The invention can transmit the vibration of the upper part of the structure in any direction to the horizontal frequency modulation mass damper arranged at the bottom of the structure, thereby facilitating the early installation and the later maintenance of the horizontal frequency modulation mass damper.
Description
Technical Field
The invention relates to the technical field of building shock absorption, in particular to a device for arranging a frequency modulation mass damper far away from a vibration point.
Background
In order to control horizontal or vertical vibrations of a building structure under the excitation of external loads, frequency modulated mass dampers are often arranged at the structural vibrations. If a high-rise structure is provided with a horizontal frequency modulation mass damper at the top of the structure, and a large-span structure is provided with a vertical frequency modulation mass damper at the maximum vibration acceleration of a floor slab. Both frequency-modulated mass dampers need to be arranged near the vibration point, i.e. both frequency-modulated mass dampers need to be arranged in the upper structure. Such an arrangement would increase the difficulty of the prior installation of the frequency modulated mass damper and the cost of the later maintenance. Thus, an apparatus has been invented which allows the transmission of the vibrations of the superstructure to the bottom of the structure, and then the installation of a horizontal fm mass damper at the bottom of the structure, allowing the transmission of the vibrations of the superstructure to the horizontal fm mass damper at the bottom of the structure.
Disclosure of Invention
The present invention solves the above-mentioned technical problems of the prior art by providing a device for arranging a frequency modulated mass damper remote from the vibration point.
In order to achieve the purpose, the invention adopts the following technical scheme: a device for keeping away from vibration point and arranging frequency modulation mass damper, includes lug, first wire rope, concentric assembly pulley, second wire rope, level to frequency modulation mass damper, extension spring and linear guide, the concentric assembly pulley is unsettled to be fixed subaerial, concentric assembly pulley includes the center pin and rotates first pulley and the second pulley that sets up on the center pin, concentric and fixed together can not the mutual rotation between first pulley and the second pulley, the lug is connected to structural vibration point, first wire rope one end is connected to the lug, and the other end twines on the first pulley of concentric assembly pulley, second wire rope one end twines on the second pulley, and the other end is connected to the level to frequency modulation mass damper, first wire rope and second wire rope's winding opposite direction, the level is fixed with the extension spring to frequency modulation mass damper's opposite side, the other end of the tension spring is fixed with the ground or other fixed objects, the horizontal frequency modulation mass damper is arranged on the linear guide rail in a sliding mode, and the linear guide rail is fixed on the ground.
Preferably, the second pulley is larger than the first pulley, the concentric pulley set is used for amplifying the vibration amplitude of the upper structure, and the amplified vibration is transmitted to the horizontal frequency modulation mass damper, so that the energy consumption effect of the horizontal frequency modulation mass damper is improved.
Preferably, the first steel wire rope and the second steel wire rope are wound on the concentric pulley block for a certain number of initial winding turns, so that the first steel wire rope and the second steel wire rope can be wound on the pulley in a tight winding mode all the time in the movement process.
Preferably, the center lines of the second steel wire rope and the tension spring are overlapped.
Preferably, the linear slide rail is provided with a slide block capable of sliding along the linear slide rail, and the horizontal frequency modulation mass damper is fixed with the slide block.
The invention has the technical effects that: the invention can transmit the vibration of any direction of the upper part of the structure to the horizontal frequency modulation mass damper arranged at the bottom of the structure, thereby facilitating the early installation and later maintenance of the horizontal frequency modulation mass damper, realizing the amplification of the vibration amplitude of the upper structure through the concentric pulley block, transmitting the amplified vibration to the horizontal frequency modulation mass damper, and further improving the energy consumption effect of the horizontal frequency modulation mass damper.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the concentric pulley block of the present invention.
In the figure: 1. Lifting lugs; 2. a first wire rope; 3. a concentric pulley block; 31. a central shaft; 32. a first pulley; 32. a second pulley; 4. a second wire rope; 5. a horizontal frequency modulation mass damper; 6. a tension spring; 7. a linear guide rail; 8. a slider; 9. a main body structure.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a device for arranging a frequency modulation mass damper far away from a vibration point comprises a lifting lug, a first steel wire rope, a concentric pulley block, a second steel wire rope, a horizontal frequency modulation mass damper, a tension spring and a linear guide rail, wherein the concentric pulley block is suspended and fixed on the ground, the concentric pulley block comprises a central shaft, a first pulley and a second pulley which are rotatably arranged on the central shaft, the first pulley and the second pulley are concentric and fixed together and cannot rotate mutually, namely the first pulley and the second pulley rotate simultaneously and have the same angular velocity, the lifting lug is connected to a structural vibration point, one end of the first steel wire rope is connected to the lifting lug, the other end of the first steel wire rope is wound on the first pulley of the concentric pulley block, one end of the second steel wire rope is wound on the second pulley, and the other end of the second steel wire rope is connected to the horizontal frequency modulation, second wire rope level sets up, first wire rope and second wire rope's winding opposite direction has realized the transmission of vibration through first wire rope, second wire rope and concentric pulley block, transmits the level again after changing arbitrary vibration direction of structural vibration point department into the level simultaneously to frequency modulation mass damper, the level is fixed with the extension spring to frequency modulation mass damper's opposite side, the other end and ground or other fixed objects of extension spring are fixed, the level slides to frequency modulation mass damper and sets up on linear guide, linear guide fixes subaerial, makes first wire rope and second wire rope keep taut state all the time.
The second pulley is larger than the first pulley, the linear velocity of the second pulley is large under the condition that the angular velocities are equal, the concentric pulley set is used for amplifying the vibration amplitude of the upper structure, and the amplified vibration is transmitted to the horizontal frequency modulation mass damper, so that the energy consumption effect of the horizontal frequency modulation mass damper is improved.
The first steel wire rope and the second steel wire rope are wound on the concentric pulley block for a certain number of initial winding turns so as to ensure that the first steel wire rope and the second steel wire rope can wind the pulley tightly in the moving process.
The center lines of the second steel wire rope and the tension spring are overlapped.
The linear sliding rail is provided with a sliding block capable of sliding along the linear sliding rail, and the horizontal frequency modulation mass damper is fixed with the sliding block.
When the main structure vibrates, the vibration displacement of the vibration point is amplified through the concentric pulley block and then transmitted to the horizontal frequency-modulated mass damper, energy consumption is carried out by utilizing energy consumption components in the horizontal frequency-modulated mass damper, and then the vibration of the structure is controlled, so that the left-right shaking of a high-rise structure such as a one-way pipe can be improved, and the left-right shaking is caused, such as wind vibration.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A device for arranging a frequency modulated mass damper away from a vibration point, characterized by: the device comprises a lifting lug, a first steel wire rope, a concentric pulley block, a second steel wire rope, a horizontal frequency modulation mass damper, a tension spring and a linear guide rail, wherein the concentric pulley block is suspended and fixed on the ground, the concentric pulley block comprises a central shaft, a first pulley and a second pulley which are rotatably arranged on the central shaft, the first pulley and the second pulley are concentric and fixed together and cannot rotate mutually, the lifting lug is connected to a structural vibration point, one end of the first steel wire rope is connected to the lifting lug, the other end of the first steel wire rope is wound on the first pulley of the concentric pulley block, one end of the second steel wire rope is wound on the second pulley, the other end of the second steel wire rope is connected to the horizontal frequency modulation mass damper, the winding directions of the first steel wire rope and the second steel wire rope are opposite, the tension spring is fixed on the other side, the horizontal frequency modulation mass damper is arranged on the linear guide rail in a sliding mode, and the linear guide rail is fixed on the ground.
2. A device for arranging a frequency modulated mass damper remote from a vibration point as claimed in claim 1, characterized in that: the second pulley is larger than the first pulley.
3. A device for arranging a frequency modulated mass damper remote from a vibration point as claimed in claim 1, characterized in that: the first steel wire rope and the second steel wire rope are wound on the concentric pulley block for initial winding turns.
4. A device for arranging a frequency modulated mass damper remote from a vibration point as claimed in claim 1, characterized in that: the center lines of the second steel wire rope and the tension spring are overlapped.
5. A device for arranging a frequency modulated mass damper remote from a vibration point as claimed in claim 1, characterized in that: the linear sliding rail is provided with a sliding block capable of sliding along the linear sliding rail, and the horizontal frequency modulation mass damper is fixed with the sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011201177.XA CN112177188A (en) | 2020-11-02 | 2020-11-02 | Device for arranging frequency modulation mass damper far away from vibration point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011201177.XA CN112177188A (en) | 2020-11-02 | 2020-11-02 | Device for arranging frequency modulation mass damper far away from vibration point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112177188A true CN112177188A (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011201177.XA Pending CN112177188A (en) | 2020-11-02 | 2020-11-02 | Device for arranging frequency modulation mass damper far away from vibration point |
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| Country | Link |
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| CN (1) | CN112177188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309813A (en) * | 2021-06-01 | 2021-08-27 | 大连理工大学 | Semi-active vibration absorption and energy dissipation control system for restraining vortex-induced vibration of bridge |
-
2020
- 2020-11-02 CN CN202011201177.XA patent/CN112177188A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309813A (en) * | 2021-06-01 | 2021-08-27 | 大连理工大学 | Semi-active vibration absorption and energy dissipation control system for restraining vortex-induced vibration of bridge |
| CN113309813B (en) * | 2021-06-01 | 2022-03-04 | 大连理工大学 | Semi-active vibration absorption and energy dissipation control system for restraining vortex-induced vibration of bridge |
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