CN102493572B - Adjustable damping energy storage type tuned mass damper and energy storage method thereof - Google Patents
Adjustable damping energy storage type tuned mass damper and energy storage method thereof Download PDFInfo
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Abstract
The invention provides an adjustable damping energy storage type tuned mass damper. A damping adjusting device of a damper of consists of a permanent magnet, coils, auxiliary rods, an energy storage battery, an adjustable resistor, a light-emitting diode (LED) pre-warning indicator light; in the reciprocating motion process that the damper absorbs the vibration energy of a main structure so as to generate inertial mass, a cylindrical spiral spring provides damping, the permanent magnet generates a variable magnetic field, induced electromotive force is generated in the coils so as to generate induction current, and the induction current generates electromagnetic damping to inhibit the movement of the permanent magnet; the adjustable resistor in the damping adjusting device is adjusted, so the magnitude of the electromagnetic damping is changed, and the damping ratio of a structure reaches the optimum damping ratio; and residual energy is recovered by using the energy storage battery, the LED pre-warning indicator light provides a pre-warning indication for a pedestrian and a vehicle, and multiple effects of vibration controlling, clean energy recovery, pre-warning and alarming of vibration conditions and the like.
Description
Technical field
The present invention relates to a kind of vibration absorber that suppresses structural vibration, be particularly useful for the vibration isolation of building engineering structure, belong to the engineering structures antivibration area, specifically relate to a kind of contactless power consumption, damping ratio accurately adjustable, energy can recycle, but can play and shake and the tuned mass damper of forewarning function bridge or highrise building.
Background technology
Along with scientific and technical development, the span of engineering structures is increasing, highly more and more higher, under the effect of the exterior power loads such as earthquake or high wind, structure can produce comparatively strong vibration, increase the tired and damage of structure, finally cause structure then just not lose efficacy catastrophic failure even occurs in projected life.Structural vibration control can alleviate the reaction of structure under the dynamic actions such as wind, earthquake, vehicle and damage accumulation effectively, effectively improves the resistance to shock of structure, is the major works structural vibration reduction and combats a natural disaster the effective ways and the technology that become.In order to make tuned mass damper there is better damping property, make damping parameter more stablize adjustable, in prior art, existing several different methods is by the frequency of regulating tuned mass damper and the maximization that damping recently realizes the vibration isolation effect, as the patent No. is 200810237452.6, grant number is CN101492941A, name is called the invention of " a kind of dual-tuning vibration reduction method for liquid quality ", adopt the solid coupled vibrations of stream to make mass parameter, stiffness parameters and damping parameter separate fully, tuning convenience, but utilize the size of the size adjustment damping force of oilhole, adopt the damping ratio of open damping hole regulating system, for the damper of little modal mass, can reach effect preferably, and for large modal mass, the strain of damping force phase is large, the adjusting of damping ratio has certain difficulty, the patent No. is 200810082654.8, grant number is CN101457553A, name is called the invention of " spring stiffness adjustable tuning quality damper ", the rigidity that application spring rate adjusting device is regulated shock absorber, simplified the adjustment work difficulty, but adopt oil damper when regulating resistance of shock absorber, have the oil leak problem, the patent No. is 02145115.X, grant number is CN1421581, name is called the invention of " Tunable power consumption quality damper for power generator ", quantity by increasing or reduce spring is to regulate the frequency of tuned mass damper, adopt the mode driving electric machine generating of mechanical snap, utilize the adjustability of adjustable resistance to regulate the damping ratio of tuned mass damper to reach optimal control results, but the mode of mechanical snap can cause component wear, affect application life, and number of springs is too much, affect the stability of system, practicality is poor, the patent No. is 201010022003.7, grant number is CN101761146A, name is called the invention of " permanent-magnet type eddy current tuned mass damper ", move and form induced-current in metallic conductor by permanent magnet, current vortex namely, induced-current hinders the motion of permanent magnet conversely, thereby provide an electromagnetic damping to structure, and by regulating the size of the distance change induced electromotive force between permanent magnet and metallic conductor, and then change induced-current, reach the purpose of regulating the electromagnetic damping size, but the change scope of induced electromotive force is limited, on regulating, damping has certain restriction, and inertia mass is moved on linear bearing, frictional resistance is larger, what is particularly worth mentioning is that, tuned mass damper of the prior art is not all recycled vibrational energy.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of adjustable damping energy storage type tuned mass damper is provided, by permanent magnet, coil, auxiliary rod, energy storage battery, adjustable resistance, LED early warning indicator lamp forms the damping adjustment device of damper, in damper absorption main structure vibrational energy causes the reciprocating motion process of inertia mass, except cylindrical helical spring provides damping, the magnetic field that permanent magnet changes, produce induced electromotive force and then produce induced-current in coil, induced electricity fails to be convened for lack of a quorum and forms the motion that electromagnetic damping suppresses permanent magnet, by the adjustable resistance in the damping adjusting adjusting device, thereby change the size of electromagnetic damping, the adjustment of implementation structure damping ratio, and utilize energy storage battery to reclaim excess energy, provide the early warning indication by LED early warning indicator lamp to pedestrian and vehicle, realize vibration isolation, clean energy resource reclaims, the multiple effects such as vibration state early warning and alarming.
Technical scheme of the present invention is achieved in that
Described a kind of adjustable damping energy storage type tuned mass damper, mainly by inertia mass a, cylindrical helical spring b, base plate and Crane Rail c, end plate d, rolling bearing e, permanent magnet g, coil h, auxiliary rod i, energy storage battery j, adjustable resistance k, LED early warning indicator lamp l, formed, it is characterized in that:
Base plate and Crane Rail c are set in the bottom of whole damper, affixed with the bottom of the end plate d that plays a supportive role at the two ends of base plate and Crane Rail c, affixed by 4 auxiliary rod i between two end plates d, the integral outer framework of formation damper; At the upper and lower surface fixing permanent magnet g of inertia mass a, and be seated on base plate and Crane Rail c by rolling bearing e, making inertia mass a drive permanent magnet g can move back and forth along base plate and driving rail c; Between inertia mass a two sides and corresponding end plate d, cylindrical spring b is arranged respectively, by cylindrical helical spring b, to the reciprocating motion of inertia mass a, provide restoring force; Inboard at two end plate d is fixed with respectively coil h, and coil h is coiled on 4 auxiliary rod i, makes cylindrical helical spring b and coil h contactlessly be embedded in coil h; The positive pole of energy storage battery j is connected with the coil h of an end by LED early warning indicator lamp l, and the negative pole of energy storage battery j is connected with the coil h of the other end by adjustable resistance k; The damping adjustment device that is formed damper by permanent magnet g, coil h, auxiliary rod i, energy storage battery j, adjustable resistance k, LED early warning indicator lamp l;
The adjustable damping of described a kind of adjustable damping energy storage type tuned mass damper and energy-storage method, it is characterized in that: damper is after the ENERGY E that absorbs the main structure vibration, inertia mass a drives permanent magnet g and moves back and forth, in this process, the magnetic field that permanent magnet g changes, produce induced electromotive force U in coil h, and then generation induced-current I, according to Lenz's law, induced electricity fails to be convened for lack of a quorum and forms the motion that electromagnetic damping hinders permanent magnet g, control the size of induced-current I by the resistance value R of the adjustable resistance k in the damping adjusting adjusting device, thereby change the size of electromagnetic damping, the adjustment of implementation structure damping ratio, reach the optimization of vibration isolation, and utilize energy storage battery j to reclaim excess energy W, reach the purpose of energy-saving and emission-reduction, simultaneously, LED early warning indicator lamp l in damping adjustment device can be according to the size of damper vibration amplitude, that is the size of main structure vibration amplitude, by changing LED early warning indicator lamp l lamplight brightness or change color, provide the early warning indicative function to pedestrian and vehicle, guarantee the safety of pedestrians and vehicles, LED early warning indicator lamp l consumed energy is less, can ignore, the relation that the electric energy that the ENERGY E of main structure vibration, adjustable resistance k consume, energy storage battery j reclaim between excess energy W is determined by following formula:
Known in formula, regulate the resistance coefficient R of adjustable resistance k, can reach the purpose of regulating system dissipation energy size and energy dissipation speed, and resistance is less, the energy that electromagnetic damping consumes is more, and the damping provided is larger;
Described a kind of adjustable damping energy storage type tuned mass damper is characterized in that: base plate and Crane Rail c, end plate d and auxiliary rod i all adopt the non-magnetic metal material, as aluminium etc., to prevent the magnetic leakage phenomenon, occur.
The present invention has following advantage:
1, by the electromagnetic damping dissipation energy, be a kind of noncontact power consumption, in the power consumption process, wear and tear less, durable in use, compare problems such as needn't worrying leakage of oil, wearing and tearing with oil damper;
2, can realize the damping ratio of adjusting tuned mass damper by regulating adjustable resistance, reach the optimal damper ratio of design, realize the optimal effectiveness of vibration isolation, and the adjustable range of damping ratio be larger;
3, utilize the memory function of energy storage battery, reclaim excess energy, realize energy-saving and emission-reduction;
4, the rigidity of tuned mass damper is separated fully with damping, regulates wherein one and can not exert an influence to another;
The mode of 5, rolling by rolling bearing drives inertia mass and permanent magnet moves back and forth, and frictional force is dropped to minimum;
6, permanent magnet is not only the vitals that electromagnetic damping is provided, and also as mass, for damper, provides inertia force;
7, according to the change of LED early warning indicator lamp signal, can simply judge the vibration state of bridge construction, the safe condition of structure there is is the assessment of a summary and the early warning and alarming function is provided;
8, simple in structure, good reliability, cost is low, maintenance cost is low;
9, can comprehensively realize the multiple effects such as vibration isolation, clean energy resource recovery, vibration state early warning and alarming.
The accompanying drawing explanation
The organigram that Fig. 1 is adjustable damping energy storage type tuned mass damper of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.The organigram that Fig. 1 is adjustable damping energy storage type tuned mass damper of the present invention.Embodiment is certain People's Bank of China's overline bridge, its single order Lateral Vibration Modal quality is 100 tons, the oscillation crosswise frequency is 1.2Hz, adopt the scheme of multiple tuned mass dampers to carry out the vibration isolation of this bridge, at this bridge modal vibration displacement maximum position, 8 tuned mass dampers are set, the modal mass of each tuned mass damper is 0.6% with the modal mass ratio of this bridge single order oscillation crosswise.In the present embodiment, the inertia mass that inertia mass a, permanent magnet g and rolling bearing e form amounts to 600kg; Single cylindrical helical spring b rigidity is 16.2kN/m, and its spring steel wire diameter is 12mm, and the spring steel wire central diameter is 110mm, and free height is 280mm; Base plate and the long 1200mm of Crane Rail c, wide 500mm, high 500mm; The long 500mm of end plate d, wide 500mm, thick 20mm; 4 auxiliary rod i are arranged between two end plates d, and auxiliary rod i diameter is that 30mm, length are 1200mm; Coil h adopts the copper cash that diameter is 3mm.
The skew that produces in the process of walking center of gravity as the pedestrian, cause the oscillation crosswise of pedestrian overcrossing, after 8 tuned mass dampers absorb the ENERGY E of pedestrian overcrossing vibration, inertia mass a and permanent magnet g are seated on rolling bearing e, along with rolling bearing e moves back and forth on the track of base plate and Crane Rail c, in this reciprocating motion process, the magnetic field that permanent magnet g changes, produce induced electromotive force U and then produce induced-current I in coil h, according to Lenz's law, induced electricity fails to be convened for lack of a quorum and forms the motion that electromagnetic damping hinders permanent magnet g, resistance value R by the adjustable resistance k in regulating circuit controls faradic size, thereby change the size of electromagnetic damping, the adjustment of implementation structure damping ratio, reach the optimization of vibration isolation.Because LED early warning indicator lamp l consumed energy is less, can ignore.Damper absorbs the ENERGY E of vibration by electromagnetic damping consumption and energy storage battery j storage, and the energy of storage is W,
Known in formula, regulate the resistance coefficient R of adjustable resistance k, can reach the purpose of regulating system dissipation energy size and energy dissipation speed, and resistance is less, the energy that electromagnetic damping consumes is more, and the damping provided is larger.Through computational analysis, the coil h number of turn adopted in embodiment is 2000 circles, the resistance value R adjustable extent of adjustable resistance k is 100-2000 Europe, and energy storage battery j adopts the energy storage battery that voltage is 24 volts, and LED early warning indicator lamp l adopts the diode luminescence pipe of 0.05 watt of power.
Empirical tests, the present embodiment action effect is better, reaches and realizes vibration isolation, the utilization of energy-saving and emission-reduction energy recovery and vibration monitoring early warning and alarming triple role effect, can be applicable to practical engineering project.
Claims (3)
1. an adjustable damping energy storage type tuned mass damper, mainly by inertia mass (a), cylindrical helical spring (b), base plate and Crane Rail (c), end plate (d), rolling bearing (e), permanent magnet (g), coil (h), auxiliary rod (i), energy storage battery (j), adjustable resistance (k), LED early warning indicator lamp (l), formed, it is characterized in that:
Base plate and Crane Rail (c) are set in the bottom of whole damper, two ends at base plate and Crane Rail (c) are affixed with the bottom of the end plate (d) that plays a supportive role, affixed by 4 auxiliary rods (i) between two end plates (d), the integral outer framework of formation damper; At the upper and lower surface fixing permanent magnet (g) of inertia mass (a), and be seated on base plate and Crane Rail (c) by rolling bearing (e), making inertia mass (a) drive permanent magnet (g) can move back and forth along base plate and Crane Rail (c); Between inertia mass (a) two sides and corresponding end plate (d), cylindrical helical spring (b) is arranged respectively, by cylindrical helical spring (b), to the reciprocating motion of inertia mass (a), provide restoring force; Be fixed with respectively coil (h) in the inboard of two end plates (d), coil (h) is coiled on 4 auxiliary rods (i), makes cylindrical helical spring (b) and coil (h) contactlessly be embedded in coil (h); The positive pole of energy storage battery (j) is connected with the coil (h) of an end by LED early warning indicator lamp (l), and the negative pole of energy storage battery (j) is connected with the coil (h) of the other end by adjustable resistance (k); The damping adjustment device that is formed damper by permanent magnet (g), coil (h), auxiliary rod (i), energy storage battery (j), adjustable resistance (k), LED early warning indicator lamp (l).
2. a kind of adjustable damping energy storage type tuned mass damper according to claim 1, it is characterized in that: base plate and Crane Rail (c), end plate (d) and auxiliary rod (i) all adopt the non-magnetic metal material, to prevent the magnetic leakage phenomenon, occur.
3. damping adjusting and the energy-storage method of an adjustable damping energy storage type tuned mass damper, it is characterized in that: damper is after the ENERGY E that absorbs the main structure vibration, because the upper and lower surface in inertia mass (a) has been fixed permanent magnet (g), and be seated on base plate and Crane Rail (c) by rolling bearing (e), making inertia mass (a) drive permanent magnet (g) moves back and forth along base plate and Crane Rail (c), provide restoring force and be respectively equipped with cylindrical helical spring (b) between inertia mass (a) two sides and corresponding end plate (d) to the reciprocating motion of inertia mass (a), in inertia mass (a), drive in permanent magnet (g) reciprocating motion process, the magnetic field that permanent magnet (g) changes, produce induced electromotive force U in coil (h), and then generation induced-current I, according to Lenz's law, induced electricity fails to be convened for lack of a quorum and forms the motion that electromagnetic damping hinders permanent magnet (g), control the size of induced-current I by the resistance value R of the adjustable resistance in the damping adjusting adjusting device (k), thereby change the size of electromagnetic damping, the adjustment of implementation structure damping ratio, reach the optimization of vibration isolation, and utilize energy storage battery (j) to reclaim excess energy W, reach the purpose of energy-saving and emission-reduction, simultaneously, LED early warning indicator lamp (l) in damping adjustment device can be according to the size of damper vibration amplitude, that is the size of main structure vibration amplitude, by changing LED early warning indicator lamp (l) lamplight brightness or change color, provide the early warning indicative function to pedestrian and vehicle, guarantee the safety of pedestrians and vehicles, LED early warning indicator lamp (l) consumed energy is less, can ignore, the relation that the electric energy that the ENERGY E of main structure vibration, adjustable resistance (k) consume, energy storage battery (j) reclaim between excess energy W is determined by following formula:
Known in formula, regulate the resistance coefficient R of adjustable resistance (k), can reach the purpose of regulating system dissipation energy size and energy dissipation speed, and resistance is less, the energy that electromagnetic damping consumes is more, and the damping provided is larger.
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| JP4279396B2 (en) * | 1999-04-09 | 2009-06-17 | 特許機器株式会社 | Synchronous vibration control device |
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| US8800736B2 (en) * | 2008-05-30 | 2014-08-12 | Design, Imaging & Control, Inc. | Adjustable tuned mass damper systems |
| CN201547167U (en) * | 2009-10-30 | 2010-08-11 | 西格玛集团有限公司 | Generating shock absorber |
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| CN201667749U (en) * | 2010-03-31 | 2010-12-08 | 比亚迪股份有限公司 | LED dimming control system |
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Inventor after: Wang Zhengxing Inventor after: Chai Xiaopeng Inventor after: Guo Cuicui Inventor after: Zhang Bo Inventor after: Wang Bo Inventor after: Liu Pengfei Inventor after: Huang Qing Inventor after: Li Wu Inventor after: Wang Qingzeng Inventor after: Zhu Zhibao Inventor after: Wang Xiang Inventor after: Li Dongchao Inventor before: Wang Bo Inventor before: Guo Cuicui Inventor before: Zhang Bo Inventor before: Liu Pengfei Inventor before: Huang Qing Inventor before: Li Wu Inventor before: Wang Qingzeng Inventor before: Zhu Zhibao Inventor before: Wang Xiang Inventor before: Li Dongchao Inventor before: Chai Xiaopeng |
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Free format text: CORRECT: INVENTOR; FROM: WANG BO LIU PENGFEI HUANG QING LI WU WANG QINGCENG ZHU ZHIBAO WANG XIANG LI DONGCHAO CHAI XIAOPENG GUO CUICUI ZHANG BO TO: WANG ZHENGXING WANG BO LIU PENGFEI HUANG QING LI WU WANG QINGCENG ZHU ZHIBAO WANG XIANG LI DONGCHAO CHAI XIAOPENG GUO CUICUI ZHANG BO |
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Address after: 103 No. 430000 Hubei Province in Qiaokou District of Wuhan city road construction Patentee after: BRIDGE SCIENCE AND TECHNOLOGY INSTITUTE CO., LTD., CHINA RAILWAY ENGINEERING GROUP Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 430034 Wuhan construction Avenue, Hubei, No. 103 Patentee before: China Zhongtie Major Bridge Engineering Group Co., Ltd. Patentee before: Group Co., Ltd., Zhongtie Daqiao Bureau |
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Effective date of registration: 20200618 Address after: 430000 No.29 Hanxi Road, Qiaokou District, Wuhan City, Hubei Province Co-patentee after: China Zhongtie Major Bridge Engineering Group Co.,Ltd. Patentee after: China Railway Qiaoyan Technology Co., Ltd Co-patentee after: CHINA RAILWAY BRIDGE SCIENCE RESEARCH INSTITUTE, Ltd. Address before: No. 103 430000 Qiaokou District in Hubei province Wuhan city road construction Co-patentee before: China Zhongtie Major Bridge Engineering Group Co.,Ltd. Patentee before: CHINA RAILWAY BRIDGE SCIENCE RESEARCH INSTITUTE, Ltd. |
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