CN113513103B - Suspension type composite tuning vibration reduction device and method - Google Patents
Suspension type composite tuning vibration reduction device and method Download PDFInfo
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- CN113513103B CN113513103B CN202111074713.9A CN202111074713A CN113513103B CN 113513103 B CN113513103 B CN 113513103B CN 202111074713 A CN202111074713 A CN 202111074713A CN 113513103 B CN113513103 B CN 113513103B
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- 239000000725 suspension Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000009467 reduction Effects 0.000 title abstract description 8
- 238000013016 damping Methods 0.000 claims abstract description 57
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 238000005265 energy consumption Methods 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims abstract description 7
- 230000001133 acceleration Effects 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 11
- 239000006096 absorbing agent Substances 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000004044 response Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a suspension type composite tuning vibration damping device and a method, belonging to the technical field of vibration damping, and the technical scheme is as follows: the device comprises a frame body and a suspension mechanism which is arranged in the center of the frame body and can rotate relative to the frame body, wherein a mass ball is arranged at the tail end of the suspension mechanism; a plurality of energy consumption units which are arranged at intervals along the circumferential direction of the suspension mechanism are fixed on the frame body; the energy consumption unit comprises a damping cavity and an agitating mechanism arranged in the damping cavity, the agitating mechanism is connected with the suspension mechanism through a traction rope, and the suspension mechanism can drive the agitating mechanism to agitate magnetorheological fluid filled in the damping cavity when swinging. The invention can reduce the vibration response of the power transmission tower structure in all directions under the action of external force, thereby achieving the purposes of energy consumption and vibration reduction; and the natural vibration period of the mass pendulum can be adjusted.
Description
Technical Field
The invention relates to the technical field of vibration reduction, in particular to a suspension type composite tuning vibration reduction device and method.
Background
Under the action of earthquake and wind load, the high-rise structure can vibrate, and the safety of the high-rise structure is seriously reduced. The suspension pendulum mass damper is a relatively economic passive damping device of a high-rise structure, and has the outstanding advantage that the swinging direction of the pendulum mass is completely dependent on the vibration direction of the structure. In practical application, the mass pendulum can accurately give damping force along the vibration direction.
However, most of the traditional suspension mass pendulum dampers are passively damped, and the dynamic adjustment of the self-vibration period and the vibration damping force cannot be performed according to the service condition and the real-time vibration of the structure, so that the vibration damping effect is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a suspension type composite tuning vibration damping device and method, which can reduce the vibration response of a power transmission tower structure in all directions under the action of external force and achieve the purposes of energy consumption and vibration damping; and the natural vibration period of the mass pendulum can be adjusted.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides a suspended composite tuned vibration damping device, including a frame body, a suspension mechanism disposed at the center of the frame body and capable of rotating relative to the frame body, wherein a mass ball is mounted at the end of the suspension mechanism; a plurality of energy consumption units which are arranged at intervals along the circumferential direction of the suspension mechanism are fixed on the frame body;
the energy consumption unit comprises a damping cavity and an agitating mechanism arranged in the damping cavity, the agitating mechanism is connected with the suspension mechanism through a traction rope, and the suspension mechanism can drive the agitating mechanism to agitate magnetorheological fluid filled in the damping cavity when swinging.
As a further implementation mode, the suspension mechanism comprises a cantilever and a telescopic rod, one end of the telescopic rod is rotatably connected with the cantilever, and the other end of the telescopic rod is connected with the mass ball.
As a further implementation, the traction cable is connected with the cantilever through a connecting piece.
As a further implementation, the cantilever is mounted with an acceleration sensor.
As a further implementation mode, a locking device is installed on the outer side of the telescopic rod.
As a further implementation mode, the stirring mechanism comprises a rotating shaft and blades arranged on the rotating shaft, and the blades are circumferentially provided with electrified coils.
As a further implementation mode, a shell is installed on the outer side of the damping cavity, and the electrified coil and the blades are arranged in the damping cavity.
As a further implementation mode, the rotating shaft is sleeved with a return spring, one end of the return spring is fixed with the rotating shaft, and the other end of the return spring is connected with the inner wall of the shell or the outer wall of the damping cavity.
As a further implementation, an acceleration sensor is mounted on the mass ball.
In a second aspect, the embodiment of the invention further provides a suspension type composite tuning vibration damping method, wherein the vibration damping device is adopted, the mass ball swings under the action of external force, and the rotating shaft and the blades rotate through the stretching of the traction cable; the blades stir magnetorheological fluid in the damping cavity, and the electrified coil is electrified to generate a magnetic field; and simultaneously, the vibration information is detected in real time through the acceleration sensor and is reflected to the control unit.
The invention has the following beneficial effects:
(1) the invention realizes multidimensional vibration in a plane by utilizing the suspended mass pendulum, so that the mass pendulum can accurately swing along the vibration direction of the power transmission tower structure, and provides vibration reduction damping force with accurate direction; the mass pendulum is connected with the energy consumption unit through the traction cable, so that the energy consumption unit can realize the energy consumption effect while swinging; the mass pendulum is combined with the energy consumption unit, so that the vibration reduction and energy consumption effects are enhanced.
(2) According to the invention, the frequency adjusting system is formed by the telescopic rod and the locking device, and the swinging radius of the mass pendulum is adjusted by the telescopic rod, so that the purpose of adjusting the self-vibration period of the damping device is achieved; and a locking device is arranged, so that slippage after the position of the quality ball is determined can be avoided, and the stability of the vibration reduction effect is improved.
(3) The energy consumption unit of the invention indirectly changes the damping force and the energy consumption capability of the vibration damper by changing the viscosity of the magnetorheological fluid through the rotation of the blades, thereby improving the vibration control effect.
(4) The invention realizes dynamic monitoring of the vibration process by arranging the acceleration sensor and provides a basis for adjusting the period of the vibration device.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a perspective view of the present invention according to one or more embodiments;
FIG. 2 is a front view of the present invention in accordance with one or more embodiments;
FIG. 3 is a perspective view of a locking device according to one or more embodiments of the present invention;
FIG. 4 is a schematic structural view of a locking assembly according to one or more embodiments of the present invention;
FIG. 5 is a schematic diagram of an energy consuming unit according to one or more embodiments of the present disclosure;
the device comprises a frame body 1, a frame body 2, a first connecting piece 3, a first universal spherical hinge 4, a cantilever 5, a second connecting piece 6, a second universal spherical hinge 7, a locking device 8, a telescopic rod 9, blades 10, a first acceleration sensor 11, a mass ball 12, an energy consumption unit 13, a second acceleration sensor 14, a traction rope 15, a third acceleration sensor 16, an electrified coil 17, a locking assembly 18, a limiting plate 19, a gear 20, an electric lock pin 21, a winch 22, a rotating shaft 23, a shell 24, a reset spring 25, a separating plate 26, a damping cavity 27 and a control unit.
Detailed Description
The first embodiment is as follows:
the embodiment provides a suspended composite tuned vibration damping device, as shown in fig. 1 and 2, which includes a frame body 1, an energy consumption unit 12, a mass ball 11, and a suspension mechanism, wherein the frame body 1 is used for supporting various components, and the structure of the frame body can be set according to actual installation requirements; the frame body 1 of the embodiment is a rectangular frame, the suspension mechanism is arranged in the center of the frame body 1, the top end of the suspension mechanism is provided with the first connecting piece 2, and the suspension mechanism is fixed with a power transmission tower structure (such as a power transmission tower) through the first connecting piece 2 when in use; the mass ball 11 is mounted at the bottom end of the suspension mechanism.
The mass ball 11 is a metal solid ball, such as an iron solid ball, to provide a sufficient mass with a volume as small as possible, which is advantageous for providing a damping force to the vibration damping structure. The mass of the mass ball 11 should be selected according to the requirements of the vibration damping structure, and when the vibration damping reaction force required by the structure is insufficient, the number of the vibration damping structure can be increased, or the mass of the mass ball 11 can be increased.
Further, the suspension mechanism comprises a cantilever 4 and a telescopic rod 8, one end of the cantilever 4 is connected with the first connecting piece 2 through the first universal spherical hinge 3, and the first connecting piece 2 is connected with the power transmission tower structure (such as a power transmission tower), so that the cantilever 4 can swing around a connecting point under the action of vibration to provide enough vibration damping force for the power transmission tower structure.
The other end of the cantilever 4 is connected with one end of a telescopic rod 8 through a second universal spherical hinge 6, and the other end of the telescopic rod 8 is connected with a mass ball 11; the distance between the mass ball 11 and the top connecting point is adjusted through the telescopic rod 8, so that the vibration frequency is adjusted to meet different working condition requirements. The telescopic rod 8 can be an electric telescopic rod, a hydraulic telescopic rod and the like.
As shown in fig. 3, a locking device 7 is provided outside the telescopic rod 8 in order to prevent the mass ball 11 from slipping due to an external force after being adjusted to a proper position. The locking device 7 of the present embodiment comprises a limit plate 18 and a locking assembly 17, wherein the locking assembly 17 is fixed outside the telescopic rod 8 and is matched with the limit plate 18. As shown in fig. 4, the locking assembly 17 comprises a support member, a gear 19 and an electric locking pin 20, the support member is fixed with the telescopic rod 8, and the gear 19 is rotatably connected with the support member.
It is understood that in other embodiments, the locking device may have other structures as long as the telescopic rod can be locked and unlocked.
Furthermore, a plurality of second connecting pieces 5 are arranged at intervals in the circumferential direction of the cantilever 4, and the second connecting pieces 5 are connected with the energy consumption unit 12 through a traction cable 14; the mass ball 11 is made to cooperate with the energy consuming unit 12 by means of a traction cable 14. In this embodiment, the second connector 5 is a ring connector.
As shown in fig. 5, the energy consumption unit 12 includes a housing 23, a stirring mechanism, a damping chamber 26 and an energized coil 16, the housing 23 is a closed cavity, the damping chamber 26 is formed inside the housing by a partition plate 25, and the damping chamber 26 is filled with magnetorheological fluid.
Further, the stirring mechanism comprises a rotating shaft 22 and the blades 9, the rotating shaft 22 extends into the casing 23, a winch 21 is installed at one end of the rotating shaft 22, which is located on the outer side of the casing 23, one end of the traction cable 14 is fixed with the winch 21 and wound on the winch 21 for a certain length, and the winch 21 is pulled by the traction cable 14 to drive the rotating shaft 22 to rotate, so that the blades 9 stir the magnetorheological fluid.
In this embodiment, the traction cable 14 is a steel strand, 8 steel strands are provided, and an included angle between adjacent steel strands is 45 ° to form a stable vibration damping structure.
An electrified coil 16 is arranged on the outer side of the blade 9, the electrified coil 16 is connected with a power supply, and the power supply is connected with a control unit 27; when the rotating shaft 22 rotates, the control unit 27 controls the energizing coil 16 to be energized, and the viscosity of the magnetorheological fluid in the damping cavity 26 is changed through the generated magnetic field, so that the damping force and the energy consumption capacity are adjusted. The rotation state of the rotary shaft 22 can be monitored by mounting an angle sensor on the rotary shaft 22.
Furthermore, a return spring 24 is sleeved on a part of the rotating shaft 22, which is located outside the damping cavity 26, the return spring 24 is arranged between the partition plate 25 and the inner wall of the casing 23, one end of the return spring 24 is fixed with the rotating shaft 22, and the other end of the return spring is fixed with the casing 23 or the partition plate 25. The return spring 24 serves to return the pull cable 14 to a pre-tensioned state.
The mass ball 11 of this embodiment is provided with a first acceleration sensor 10 for monitoring the dynamic state thereof, the cantilever 4 is provided with a second acceleration sensor 13 for monitoring the dynamic state thereof, and the frame body 1 or the power transmission tower structure is provided with a third acceleration sensor 15 for monitoring the real-time dynamic response of the structure to be damped. The acceleration sensor of the present embodiment is connected to the central processing unit. Monitoring the vibration period through an acceleration sensor; the natural frequency of the acceleration sensor is far larger than the vibration frequency of the structure to be measured.
The embodiment is mainly applied to controlling the vibration response of the transmission tower and reducing the damage of vibration to a transmission tower wire system.
Example two:
the embodiment provides a suspension type composite tuning vibration damping method, and by adopting the vibration damping device in the first embodiment, when the power transmission tower structure vibrates, the mass ball 11 is caused to swing; the swinging mass ball 11 drives the traction rope 14 to stretch to cause the rotating shaft 22 and the blades 9 of the energy consumption unit 12 to rotate, and the magnetorheological fluid in the damping cavity 26 is stirred.
The energizing coil 16 is connected with a power supply to generate a magnetic field, and the strength of the magnetic field is changed by changing the magnitude of the current, so that the viscosity of the magnetorheological fluid is influenced, and the effects of adjusting the damping force and the energy consumption capability of the energy consumption unit are achieved. When the traction cable 14 is pulled, the electrified coil 16 of the corresponding energy consumption unit 12 is powered on to generate damping force and energy consumption capacity, and when the pulling force of the traction cable 14 disappears, the electrified coil 16 is powered off, and the traction cable 14 is always in a tightened state under the action of the return spring 24. When the structure vibration disappears, the vibration energy of the mass ball 11 is dissipated along with the consumption of the energy consumption unit, and the structure and the damping device are restored to be stable.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. A suspended composite tuning vibration damper is characterized by comprising a frame body and a suspension mechanism which is arranged in the center of the frame body and can rotate relative to the frame body, wherein a mass ball is arranged at the tail end of the suspension mechanism; a plurality of energy consumption units which are arranged at intervals along the circumferential direction of the suspension mechanism are fixed on the frame body;
the energy consumption unit comprises a damping cavity and a stirring mechanism arranged in the damping cavity, the stirring mechanism is connected with the suspension mechanism through a traction cable, and the suspension mechanism can drive the stirring mechanism to stir the magnetorheological fluid filled in the damping cavity when swinging;
the suspension mechanism comprises a cantilever and a telescopic rod, one end of the telescopic rod is rotatably connected with the cantilever, and the other end of the telescopic rod is connected with the mass ball; one end of the cantilever is connected with the first connecting piece through a first universal spherical hinge, and the other end of the cantilever is connected with one end of the telescopic rod through a second universal spherical hinge; a locking device is arranged on the outer side of the telescopic rod;
the stirring mechanism comprises a rotating shaft and blades arranged on the rotating shaft, and electrified coils are arranged on the circumferential direction of the blades.
2. The suspended composite tuned absorber of claim 1, wherein said tow cable is connected to said boom by a connector.
3. A suspended compound tuned vibration damping device according to claim 1 or 2, wherein said cantilever is mounted with an acceleration sensor.
4. A suspended composite tuned absorber as claimed in claim 1, wherein a housing is mounted outside the damping chamber, and the electrical coil and the blade are disposed in the damping chamber.
5. The suspended composite tuned vibration damping device according to claim 1, wherein a return spring is sleeved on the rotating shaft, one end of the return spring is fixed to the rotating shaft, and the other end of the return spring is connected to the inner wall of the housing or the outer wall of the damping chamber.
6. A suspended compound tuned vibration damping device according to claim 1, wherein an acceleration sensor is mounted on said mass ball.
7. A suspension type composite tuning vibration damping method is characterized in that a vibration damping device according to any one of claims 1 to 6 is adopted, a mass ball swings under the action of external force, and a rotating shaft and a blade rotate through the stretching of a traction rope; the blades stir magnetorheological fluid in the damping cavity, and the electrified coil is electrified to generate a magnetic field; and simultaneously, the vibration information is detected in real time through the acceleration sensor and is reflected to the control unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111074713.9A CN113513103B (en) | 2021-09-14 | 2021-09-14 | Suspension type composite tuning vibration reduction device and method |
| PCT/CN2021/134692 WO2023040055A1 (en) | 2021-09-14 | 2021-12-01 | Composite tuning vibration damping device and vibration damping method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111074713.9A CN113513103B (en) | 2021-09-14 | 2021-09-14 | Suspension type composite tuning vibration reduction device and method |
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| Publication Number | Publication Date |
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| CN113513103A CN113513103A (en) | 2021-10-19 |
| CN113513103B true CN113513103B (en) | 2021-12-17 |
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| CN202111074713.9A Active CN113513103B (en) | 2021-09-14 | 2021-09-14 | Suspension type composite tuning vibration reduction device and method |
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| CN (1) | CN113513103B (en) |
| WO (1) | WO2023040055A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113513103B (en) * | 2021-09-14 | 2021-12-17 | 中国电建集团山东电力建设第一工程有限公司 | Suspension type composite tuning vibration reduction device and method |
| CN114482320B (en) * | 2022-03-30 | 2023-02-03 | 中联西北工程设计研究院有限公司 | Compound pendulum energy dissipation damping structure suitable for super high-rise building and assembling method thereof |
| CN114737814B (en) * | 2022-05-22 | 2024-04-12 | 北京工业大学 | Vibration reduction power transmission tower system with composite vibration isolation base and cantilever tuning beam |
| CN115158683B (en) * | 2022-07-22 | 2024-06-21 | 西北核技术研究所 | Unmanned aerial vehicle hangs stable system of delivery |
| CN116914403B (en) * | 2023-07-17 | 2024-02-09 | 亳州广播电视台 | High-stability broadcast television antenna |
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| CN102410524A (en) * | 2011-10-31 | 2012-04-11 | 中国电力工程顾问集团华东电力设计院 | Suspension boiler device |
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2021
- 2021-09-14 CN CN202111074713.9A patent/CN113513103B/en active Active
- 2021-12-01 WO PCT/CN2021/134692 patent/WO2023040055A1/en active Application Filing
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| CN206815928U (en) * | 2017-05-08 | 2017-12-29 | 山东大学 | Suspension type multidimensional multistage energy by collision damper |
| CN108869617A (en) * | 2018-09-29 | 2018-11-23 | 山东大学 | A kind of self-powered magnetic rheological vibration damper |
| CN110835963A (en) * | 2019-11-26 | 2020-02-25 | 大连理工大学 | Yaw-based wind power generation structure vibration control tuned mass damper |
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| Publication number | Publication date |
|---|---|
| CN113513103A (en) | 2021-10-19 |
| WO2023040055A1 (en) | 2023-03-23 |
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