CN103775549B - Eccentric eddy current tuned mass damping device - Google Patents
Eccentric eddy current tuned mass damping device Download PDFInfo
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- CN103775549B CN103775549B CN201410032516.4A CN201410032516A CN103775549B CN 103775549 B CN103775549 B CN 103775549B CN 201410032516 A CN201410032516 A CN 201410032516A CN 103775549 B CN103775549 B CN 103775549B
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Abstract
The invention belongs to the antivibration area of building structure, be specifically related to a kind of tuning quality damping device utilizing electric convolution to provide damping.Comprise conductor plate and permanent magnet, characterized by further comprising main shaft, spring and eccentric massblock, described eccentric massblock is fixedly installed on main shaft or between eccentric massblock and main shaft and is provided with rotary bearing, one end of spring is connected with eccentric massblock, conductor plate is fixedly installed on the side of eccentric massblock perpendicular to direction, main shaft medial axis, permanent magnet is between conductor plate and eccentric massblock and be fixedly installed on eccentric massblock, gap is left between conductor plate and permanent magnet, described conductor plate, permanent magnet, main shaft, spring and eccentric massblock form one group of eddy current tuned mass damping structure jointly.Structure is simple, and practical, safe and reliable, cost performance is higher, and it can be widely used in the structural vibration control of various high level, skyscraper, thin and tall structure or long span building, and market application foreground is very wide.
Description
Technical field
The invention belongs to the antivibration area of building structure, be specifically related to a kind of tuning quality damping device utilizing electric convolution to provide damping.
Background technique
Along with the development of urban construction, various high level, skyscraper and thin and tall structure, long span building thing are increasing, simultaneously, urban traffic network is more and more flourishing, the bridge structure such as boarding bridge, pedestrian overpass, harbour trestle of various longspan is widely used, for the life of people and trip bring great convenience.But this type of tower buildings and bridge easily resonate under the external force such as high wind or earthquake incentive action, bring uncomfortable sensation to resident or pedestrian, cause structure self structure to damage, even serious threat is to the safety of people and vehicle.How to prevent this kind of longspan, low frequency configuration thing from destructive resonance occurring and become in engineering construction the realistic problem having to address.Facts have proved, tuning mass bumper (also have in document and claim tuned mass damper, or claim mass tuning damper, be also called for short vibration damper or TMD herein) is a kind of effective vibration control apparatus, its natural frequency is adjusted to the natural frequency of vibration close to structure, then installs structurally.When structure is subject to excitation force interference generation vibration, causes the resonance of TMD, absorb and consume outside hammer vibration energy, reach the object reducing structural response.Want the damping effect playing TMD to greatest extent, require that its natural frequency is consistent with the natural frequency of vibration of main structure as far as possible, otherwise the effectiveness in vibration suppression of TMD will decline to a great extent.The amplitude of structure it is pointed out that and not have the TMD of damping member seldom to use in practice, because once parameter is inaccurate or excitation force frequency changes, will increase rapidly, forms new resonance, so the damping frequency range of undamped TMD is very narrow.As can be seen here, want the damping effect playing TMD to greatest extent, not only require that its natural frequency will, as far as possible close to the natural frequency of vibration of structure, also need its damping ratio to remain on optimum value.This just requires that the natural frequency of TMD and damping ratio all should adjust accordingly at any time.; in existing TMD, damper mostly is hole throttle type or hydraulic oil piston cylinder operator, and the damping ratio of damper is all certain; adjustment damping ratio can only change damper; in addition, damper is in double vibrations condition lower seal and damages very fast, and after bad seals, the pressure difference of damping cavity cannot keep former design; damping force declines; must change, and the price of damper is very high, relies on the method changed to solve problems and certainly will cause great waste.In addition, rigidity and the damping of this series products influence each other, and parameter is accurate adjustment not easily, and particularly once product shaping, its damping is difficult to realize later stage adjustment, thus has a strong impact on the effectiveness in vibration suppression of TMD product, also increases difficulty and the cost of later maintenance simultaneously.
On the other hand, for some machinery or building structure, its vibration does not show merely vertical vibration or single transverse vibration, but simultaneously with torsional vibration or/and multi-direction vibration in horizontal plane, existing TMD product there is no the damping requirements that method effectively meets above-mentioned complex vibration.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, provide that a kind of rigidity is separated completely with damping, damping parameter regulates eccentric eddy current tuned mass damping device easily.
Eccentric eddy current tuned mass damping device of the present invention realizes like this, comprise conductor plate and permanent magnet, characterized by further comprising main shaft, spring and eccentric massblock, described eccentric massblock is fixedly installed on main shaft or between eccentric massblock and main shaft and is provided with rotary bearing, one end of spring is connected with eccentric massblock, conductor plate is fixedly installed on the side of eccentric massblock perpendicular to direction, main shaft medial axis, permanent magnet is between conductor plate and eccentric massblock and be fixedly installed on eccentric massblock, gap is left between conductor plate and permanent magnet, described conductor plate, permanent magnet, main shaft, spring and eccentric massblock form one group of eddy current tuned mass damping structure jointly.
The concrete form of spring described in the present invention can be varied, comprises extension spring, torsion spring, leaf spring, Compress Spring, shear-type rubber spring, polyurethane spring and elastic rope etc., can select as required in practical application.One end of spring is connected with eccentric massblock, and the other end is connected with other fixed structures.When eccentric massblock is fixedly installed on main shaft, eccentric massblock can with the medial axis reciprocally swinging of main shaft around main shaft under the constraint of spring; When being provided with rotary bearing between eccentric massblock and main shaft, eccentric massblock can around main shaft reciprocally swinging under the constraint of spring.In addition, can also be connected by straight-arm bar linkage structure or curved arm rod structure between eccentric massblock with main shaft, and rotary bearing is set at straight-arm bar linkage structure or between curved arm rod structure and main shaft.In addition, eccentric massblock can also comprise at least two sub-eccentric massblocks, every sub-eccentric massblock is connected with main shaft respectively by straight-arm bar linkage structure or curved arm rod structure, in described sub-eccentric massblock, at least one sub-eccentric massblock is connected with spring, and be asymmetricly arranged in each other around main shaft between sub-eccentric massblock, so both can ensure eccentric effect, can avoid again easily occurring when adopting single eccentric massblock that the problems such as moment of flexure is excessive were born in excessive or certain direction of main shaft of the weight of single eccentric massblock.
Can also comprise concentrating flux plate in described eddy current tuned mass damping structure, concentrating flux plate is positioned at conductor plate distance permanent magnet side far away.Wherein, fastening piece can be utilized concentrating flux plate and conductor plate to be directly fixedly linked; Also concentrating flux plate and main shaft can be solidly fixed, conductor plate is fixedly connected on concentrating flux plate by recycling fastening piece.For the ease of the spacing between adjustment conductor plate and permanent magnet, between conductor plate and concentrating flux plate, adjustment pad can also be set; Certainly, fastening piece also can be utilized permanent magnet and eccentric massblock to be linked together, adjustment pad is set between permanent magnet and eccentric massblock, also can realizes same effect.For the ease of the spacing between adjustment conductor plate and permanent magnet, can also between conductor plate and main shaft setting position adjust structure, described position adjustment structure comprises the feather key and keyway that arrange between conductor plate and main shaft, or the external thread section that on main shaft, corresponding conductor plate is arranged and locking nut, or the tapped through hole that conductor plate is arranged and jackscrew.Certainly, also can between concentrating flux plate and main shaft setting position adjust structure, described position adjustment structure comprises the feather key and keyway that arrange between concentrating flux plate and main shaft, or the external thread section that on main shaft, corresponding concentrating flux plate is arranged and locking nut, or the tapped through hole that concentrating flux plate is arranged and jackscrew.In addition, one group of spring is at least set in described eddy current tuned mass damping structure, different according to the shape of eccentric massblock, the concrete quantity of the corresponding spring of each eccentric massblock can be one group, two groups, three groups even more.Preferably, in eddy current tuned mass damping structure, eccentric massblock is arranged to discoid, and on each eccentric massblock, correspondence arranges two groups of springs, and two groups of springs are arranged symmetrically with along the medial axis of main shaft.In addition, assemble for the ease of carrying out and use, in eccentric eddy current tuned mass damping device of the present invention, can also external frame be set, during assembling, main shaft be fixed on external frame.Certainly, in the eddy current tuned mass damping structure of eccentric eddy current tuned mass damping device of the present invention, also one end of spring can be connected with eccentric massblock, the other end is fixedly connected on external frame and keeps motionless.
Eccentric massblock is provided with eccentric structure, and described eccentric structure comprises through hole, gap, projection or groove.
For the shearing force produced main shaft when balance eccentric massblock rotates, two groups of eddy current tuned mass damping structures can be set simultaneously in eccentric eddy current tuned mass damping device of the present invention, two groups of eddy current tuned mass damping structures form a damper unit, two groups of eddy current tuned mass damping structures in described damper unit are arranged symmetrically with along the direction, medial axis of main shaft, wherein, the proximate end face of the permanent magnet arranged respectively in two groups of eddy current tuned mass damping structures keeps polarity contrary, in two groups of eddy current tuned mass damping structures, the eccentric part of eccentric massblock is arranged symmetrically with along the medial axis of main shaft.Like this, when in two groups of eddy current tuned mass damping structures, eccentric massblock rotates respectively to main shaft formed inertia shearing force size substantially equal, direction is contrary, if when the spacing between eccentric massblock is less, it is offset each other to the inertia shearing force of main shaft, the impact on main shaft can be reduced to greatest extent, make system more stable.
In addition, in two groups of eddy current tuned mass damping structures, eccentric massblock can arrange two groups of eccentric structures respectively, between two groups of eccentric structures relative main medial axis Bi this be that 90 ° of angles are arranged, the eccentric structure relative main medial axis on two eccentric massblocks is arranged in 90 ° of angles between any two respectively.Like this, no matter vibrational excitation from which direction is transmitted, and eccentric massblock all can rotate motion around main shaft, can realize omnirange and control.Based on above-mentioned principle, four groups of eddy current tuned mass damping structures can also be comprised in eccentric eddy current tuned mass damping device of the present invention, four groups of eddy current tuned mass damping structure combination of two form two damper units, two damper units are arranged along main shaft axial series respectively, in two damper units eccentric massblock eccentric part relative main medial axis Bi this be 90 ° of angles layouts.For the ease of assembling, can be connected by coupling between the main shaft in two damper units.
The vibration of building structure can be changed into the rotation of eccentric massblock by eccentric eddy current tuned mass damping device of the present invention, drive permanent magnet rotating simultaneously, when permanent magnet counter conductor plate moves, produce induction current in conductor plate, induction current produces the electromagnetic field contrary with permanent magnet pole, according to Lenz's law due to its vortex characteristic, the magnetic field of the electromagnetic field that this magnetic pole is contrary and permanent magnet produces eddy current effect, hinder the motion of permanent magnet, form damping effect, realize power consumption.Concentrating flux plate is used for closed magnetic field of permanent magnet, strengthens electromagnetic damping effect.In its working procedure, conductor plate internal electrical eddy current makes conductor plate generate heat, and the mechanical energy that eccentric massblock rotates is the heat energy of conductor plate, and this process consumes mechanical energy.By regulating the parameter such as thickness, the thickness of concentrating flux plate, the distance between permanent magnet and conductor plate of magnetic field of permanent magnet size, conductor plate, the adjustment to system damping parameter can be realized, very convenient.In addition, in working procedure of the present invention, between each main working parts such as permanent magnet, eccentric massblock, guide plate, frictional loss is not had, the features such as therefore the present invention also has long service life, basic Maintenance free.Compared with the TMD product of existing most widely used various elastic element bearing mass, the present invention has following major advantage
(1) eccentric massblock of eccentric eddy current tuned mass damping device of the present invention realizes yaw motion by the rotary bearing that frictional force is minimum, and its structural friction is little, starts sensitive;
(2) eccentric eddy current tuned mass damping device of the present invention by changing the spacing between permanent magnet and conductor plate, can realize the fine adjustment of damping parameter, convenient and swift;
(3) eccentric eddy current tuned mass damping device of the present invention achieves being separated completely of rigidity and damping, and damping force becomes accurate linear relationship with the movement velocity of mass block, has no effect during adjustment damping force to system frequency;
(4) eccentric eddy current tuned mass damping device of the present invention utilizes permanent magnet to provide the magnetic field formed needed for electric convolution, without the need to the outside resources outside the amount of imports, just can realize larger damping ratio, especially for outdoor structures as bridge and tall building etc., avoid because inconvenience maybe can not ensure the harmful effect that the normal use of reliable power supply to product causes, its applicability is better;
(5) eccentric eddy current tuned mass damping device of the present invention does not rely on mechanical friction to consume energy, there is no overhang iso-stress lumped elements, also there is not the problems such as sealing simultaneously, therefore reliability compares other TMD device existing with working life larger lifting, can also realize substantially non-maintaining, cost performance is higher simultaneously;
(6) eccentric eddy current tuned mass damping device of the present invention can change the vibration of building structure into rotation by translation, recycling eddy current effect consumes, it can produce response to the vibrational excitation of all directions, thus realizes the object of comprehensive suppression building construction vibration.
In sum, eccentric eddy current tuned mass damping device structure of the present invention is simple, practical, safe and reliable, cost performance is higher, and it can be widely used in the structural vibration control of various high level, skyscraper, thin and tall structure or long span building, and market application foreground is very wide.
Accompanying drawing explanation
Fig. 1 is one of structural representation of eccentric eddy current tuned mass damping device of the present invention.
Fig. 2 is the application schematic diagram of the eddy current tuned mass of eccentric shown in Fig. 1 damping device.
Fig. 3 is the structural representation two of eccentric eddy current tuned mass damping device of the present invention.
Fig. 4 is the application schematic diagram of the eddy current tuned mass of eccentric shown in Fig. 3 damping device.
Fig. 5 is the structural representation three of eccentric eddy current tuned mass damping device of the present invention.
Fig. 6 is the structural representation four of eccentric eddy current tuned mass damping device of the present invention.
Fig. 7 is the structural representation five of eccentric eddy current tuned mass damping device of the present invention.
Fig. 8 is the structural representation six of eccentric eddy current tuned mass damping device of the present invention.
Fig. 9 is the application schematic diagram of the eddy current tuned mass of eccentric shown in Fig. 8 damping device.
Figure 10 is the structural representation seven of eccentric eddy current tuned mass damping device of the present invention.
Figure 11 is the application schematic diagram of the eddy current tuned mass of eccentric shown in Figure 10 damping device.
Figure 12 is eight and application schematic diagram of the structural representation of eccentric eddy current tuned mass damping device of the present invention.
Figure 13 is nine and application schematic diagram of the structural representation of eccentric eddy current tuned mass damping device of the present invention.
Figure 14 is the structural representation ten of eccentric eddy current tuned mass damping device of the present invention.
Figure 15 is the A-A sectional view of Figure 14.
Figure 16 is 11 of the structural representation of eccentric eddy current tuned mass damping device of the present invention.
Figure 17 is 12 of the structural representation of eccentric eddy current tuned mass damping device of the present invention.
Figure 18 is 13 of the structural representation of eccentric eddy current tuned mass damping device of the present invention.
Figure 19 is 14 of the structural representation of eccentric eddy current tuned mass damping device of the present invention.
Figure 20 is that the B of Figure 19 is to diagram.
Figure 21 is 15 of the structural representation of eccentric eddy current tuned mass damping device of the present invention.
Figure 22 is 16 of the structural representation of eccentric eddy current tuned mass damping device of the present invention
Embodiment
Embodiment one
Eccentric eddy current tuned mass damping device of the present invention as depicted in figs. 1 and 2, comprise main shaft 1, spring and eccentric massblock 2, conductor plate 4 and permanent magnet 3, described main shaft 1 runs through conductor plate 4 and permanent magnet 3 is arranged, rotary bearing 12 is provided with between eccentric massblock 2 and main shaft 1, conductor plate 4 is fixedly installed on the side of eccentric massblock 2 perpendicular to direction, main shaft 1 medial axis, permanent magnet 3 is between conductor plate 4 and eccentric massblock 2 and be adhesively fixed on eccentric massblock 2, gap is left between conductor plate 4 and permanent magnet 3, described spring is specially extension spring 5, one end of extension spring 5 is connected with eccentric massblock 2, the other end maintenance that is connected with the fixed structure 14 of surrounding maintains static, described conductor plate 4, permanent magnet 3, main shaft 1, extension spring 5 and eccentric massblock 2 form one group of eddy current tuned mass damping structure jointly.Wherein, the shape of eccentric massblock 2 is asymmetrical fan-shaped, adopts interference fit between eccentric massblock 2 and rotary bearing 12, and main shaft 1 is provided with circlip 13 pairs of rotary bearings 12 and realizes spacing.In addition, be provided with position adjustment structure 6 between conductor plate 4 and main shaft 1, described position adjustment structure 6 is specially the feather key and keyway that arrange between conductor plate 4 and main shaft 1.
During application, rotate for preventing main shaft 1, main shaft two ends are processed into square body section 10 and square body section 15 respectively, square body section 10 and square body section 15 fit together with connecting base 9 and connecting base 16 respectively, connecting base 9 and connecting base 16 more respectively structure 7 to be damped with upper strata and lower floor structure 19 to be damped be connected, wherein, connecting base 9 is fixed on metal anchorage 8 pre-buried in upper strata structure to be damped 7 by fastening piece 11; Connecting base 16 is fixed on metal anchorage 17 pre-buried in lower floor's structure to be damped 19 by fastening piece 18.
In eccentric eddy current tuned mass damping device of the present invention, because the mass block adopted is an eccentric massblock 2, and be provided with rotary bearing 12 between eccentric massblock 2 and main shaft 1, its resistance of start is very little, therefore, when upper strata structure to be damped 7 or/and when vibration occurs lower floor's structure 19 to be damped, structural vibration can be converted into rotation rapidly by eccentric massblock 2, drive permanent magnet 3 to rotate simultaneously, certainly, owing to being provided with extension spring 5, the rotation of eccentric massblock 2 and permanent magnet 3 is the beat motion that left and right replaces, can the frequency that deflects of eccentric adjustment mass block 2 by extension spring 5.Because main shaft 1 and conductor plate 4 do not rotate, when permanent magnet 3 counter conductor plate 4 reciprocating rotation, relative movement cutting magnetic line between permanent magnet 3 and conductor plate 4, in conductor plate 4, induction generates electric convolution, influence electricity eddy current produces the electromagnetic field contrary with permanent magnet 4 magnetic pole, hinder the motion of permanent magnet 4, and then form the damping suppressed needed for eccentric massblock rotation.In the process, conductor plate 4 internal electrical eddy current makes conductor plate generate heat, and is the heat energy that conductor plate temperature raises, realizes mechanical energy in relative rotation power consumption, the ocsillator strenght of structure to be damped is decayed rapidly, and then realizes good protective action.
In the present invention, according to considering of function and Economy, conductor plate can adopt the metallic material such as copper, aluminium to make, and the size of conductor plate and thickness are determined according to the demand of magnetic energy and TMD integral damping ratio; Permanent magnet can adopt the material such as neodymium iron boron or SmCo to make, and its size and thickness are determined according to the demand of magnetic energy.Eccentric eddy current tuned mass damping device of the present invention can regulate electromagnetic damping effect by regulating the modes such as magnetic field of permanent magnet size, the thickness of conductor plate, the distance between permanent magnet and conductor plate.Due to not friction between permanent magnet and conductor plate, as long as do certain preservative treatment to conductor plate, just can realize the working life grown very much, simultaneously during one's term of military service also without the need to any maintenance.It is to be noted especially, owing to being provided with position adjustment structure between conductor plate and main shaft, when installing at the scene, utilize position adjustment structure to regulate the distance between permanent magnet and conductor plate to get final product fine adjustment damping, fast very convenient, adaptability is stronger.
Be noted that especially, in the technological scheme of eccentric eddy current tuned mass damping device of the present invention shown in Fig. 1 and Fig. 2, gap between deflector 4 and permanent magnet 3 is not the realistic application conditions of actual product, only for the ease of seeing Each part composition clearly, in actual applications, spacing between deflector 4 and permanent magnet 3 should design according to requirement of engineering, and is adjusted by position adjustment structure 6 according to engineering reality.This point is equally applicable to other drawings and Examples of the present invention, is described in the lump at this.In addition; based on the know-why described in this example, also the two ends of main shaft 1 can be weldingly fixed on metal anchorage 8 and metal anchorage 17 respectively during application, also can realize same technique effect; only be described with word at this, also within the protection domain of application claims.
Compared with the TMD product of existing most widely used various elastic element bearing mass, the present invention has following major advantage
(1) mass block of eccentric eddy current tuned mass damping device of the present invention realizes yaw motion by the rotary bearing that frictional force is minimum, and its structural friction is little, starts sensitive;
(2) eccentric eddy current tuned mass damping device of the present invention by changing the spacing between permanent magnet and conductor plate, can realize the fine adjustment of damping parameter, convenient and swift;
(3) eccentric eddy current tuned mass damping device of the present invention achieves being separated completely of rigidity and damping, and damping force becomes accurate linear relationship with the movement velocity of mass block, has no effect during adjustment damping force to system frequency;
(4) eccentric eddy current tuned mass damping device of the present invention utilizes permanent magnet to provide the magnetic field formed needed for electric convolution, without the need to the outside resources outside the amount of imports, just can realize larger damping ratio, especially for outdoor structures as bridge and tall building etc., avoid because inconvenience maybe can not ensure the harmful effect that the normal use of reliable power supply to product causes, its applicability is better;
(5) eccentric eddy current tuned mass damping device of the present invention does not rely on mechanical friction to consume energy, there is no overhang iso-stress lumped elements, also there is not the problems such as sealing simultaneously, therefore reliability compares other TMD device existing with working life larger lifting, particularly can also realize substantially non-maintaining, cost performance is higher;
(6) eccentric eddy current tuned mass damping device of the present invention can change the vibration of building structure into rotation by translation, recycling eddy current effect consumes, it can produce response to the vibrational excitation of multiple directions, thus realizes the object of comprehensive suppression building construction vibration;
(7) do not comprise liquid damping in structure of the present invention, there is not the problem of leakage, do not have user to restriction, vertically can arrange, also can horizontally arrange, can also be in tilted layout, very convenient, and environmental protection.
In sum, eccentric eddy current tuned mass damping device structure of the present invention is simple, practical, safe and reliable, cost performance is higher, and it can be widely used in the structural vibration control of various high level, skyscraper, thin and tall structure or long span building, also can be applied to the vibration control of various machinery, be specially adapted to subsidiary torsional vibration or/and the control of the complex vibration operating mode such as multi-direction vibration in horizontal plane, market application foreground is very wide.
Embodiment two
Eccentric eddy current tuned mass damping device of the present invention as shown in Figure 3, Figure 4, be with the difference of embodiment one, be connected by straight-arm bar linkage structure between eccentric massblock 2 with main shaft 1, rotary bearing 12 is set between straight-arm bar linkage structure and main shaft 1, described straight-arm bar linkage structure is made up of straight connecting rod 20 and bearing support 100, straight connecting rod 20 is arranged between eccentric massblock 2 and bearing support 100, rotary bearing 12 is arranged in bearing support 100, adopts interference fit between rotary bearing 12 and bearing support 100.In addition, be provided with position adjustment structure 6 between conductor plate 4 and main shaft 1, described position adjustment structure 6 is specially screw through-hole and jackscrew that conductor plate 4 is arranged.
The application process of this routine described eccentric eddy current tuned mass damping device of the present invention, working principle and advantage are substantially identical with embodiment one, no longer repeat at this.It is pointed out that the shortcoming of this routine described technological scheme is, when vibrating the transfers along straight connecting rod 20 in straight-arm bar linkage structure, eccentric massblock 2 cannot produce response.
Embodiment three
Eccentric eddy current tuned mass damping device of the present invention, is with the difference of embodiment two, is connected between eccentric massblock 2 with main shaft 1 by curved arm rod structure, arrange rotary bearing between curved arm rod structure and main shaft 1 as shown in Figure 5.Described straight-arm bar linkage structure is made up of bent connecting rod 21 and bearing support 100, and bent connecting rod 21 is arranged between eccentric massblock 2 and bearing support 100, and rotary bearing 12 is arranged in bearing support 100, adopts interference fit between rotary bearing 12 and bearing support 100.
This routine described technological scheme is except having all advantages of technological scheme described in embodiment two, compared with embodiment two, owing to being provided with curved arm rod structure 21, can overcome in embodiment two, when vibrating the transfers along straight connecting rod in straight-arm bar linkage structure, eccentric massblock 2 cannot produce the shortcoming of response, and it can produce response to the vibrational excitation in each direction, thus really realizes the object of comprehensive suppression building construction vibration.
Embodiment four
Eccentric eddy current tuned mass damping device of the present invention as shown in Figure 6, be with the difference of embodiment two, eccentric massblock comprises two sub-eccentric massblocks 22 and 25, corresponding straight-arm bar linkage structure also arranges two groups, eccentric massblock 22 is connected with main shaft 1 respectively by straight-arm bar linkage structure respectively with 25, wherein, the straight-arm bar linkage structure be connected with eccentric massblock 22 is made up of straight connecting rod 23 and bearing support 100, and the straight-arm bar linkage structure be connected with eccentric massblock 25 is made up of straight connecting rod 24 and bearing support 100.In addition, sub-eccentric massblock 22 is connected with extension spring 5, and sub-eccentric massblock 25 is connected with extension spring 26, and sub-eccentric massblock 22 and sub-eccentric massblock 25 are asymmetricly arranged in around main shaft 1 each other.
Compared with embodiment two, because eccentric massblock is made up of at main axial two sub-eccentric massblocks asymmetric arrangement, it can overcome in embodiment two, when vibrating the transfers along straight connecting rod in straight-arm bar linkage structure, eccentric massblock cannot produce the shortcoming of response, it can produce response to the vibrational excitation in each direction, thus really realizes the object of comprehensive suppression building construction vibration.
In addition; be noted that; based on the know-why of this example; sub-eccentric massblock also can arrange three, four even more; only need corresponding increase straight-arm bar linkage structure to carry out connecting, good effect can be realized, accompanying drawing explanation no longer one by one; only be described with word at this, all among the protection domain of application claims.
Based on the know-why of the record of technological scheme shown in Fig. 5 and Fig. 6; sub-eccentric massblock also can be connected with main shaft 1 by curved arm rod structure; such as technological scheme as shown in Figure 7; be with the difference of technological scheme shown in Fig. 6; eccentric massblock 22 is connected with main shaft 1 by curved arm rod structure; the curved arm rod structure be connected with eccentric massblock 22 is made up of bent connecting rod 130 and bearing support 100, also at the protection domain of application claims in this.Certainly, eccentric massblock 25 also can be connected with main shaft 1 by curved arm rod structure, also can realize same effect, all among the protection domain of application claims.
Arrange the meaning that multiple sub-eccentric massblock is combined into described eccentric massblock to be also, so both can ensure eccentric effect, can avoid again easily occurring when adopting single eccentric massblock that the problems such as moment of flexure is excessive were born in excessive or certain direction of main shaft of the weight of single eccentric massblock.
Embodiment five
Eccentric eddy current tuned mass damping device of the present invention as shown in Figure 8 and Figure 9, be with the difference of embodiment one, in this routine described eccentric eddy current tuned mass damping device, concentrating flux plate 29 is also comprised in eddy current tuned mass damping structure, concentrating flux plate 29 is also arranged on main shaft 1, and be positioned at the side that conductor plate 4 is far away apart from permanent magnet 3, concentrating flux plate 29 is positioned at the top of conductor plate 4 in fig. 8.In addition, position adjustment structure is provided with between conductor plate 4 and main shaft 1, described position adjustment structure is specially the local external thread section 27 and locking nut 28 that on main shaft 1, corresponding conductor plate 4 is arranged, and conductor plate 4 and concentrating flux plate 29 is fixed on together on main shaft 1 by locking nut 28.In addition, eccentric massblock 2 is in the form of annular discs, and eccentric massblock 2 is also provided with eccentric structure, and described eccentric structure is specially the gap 101 that on eccentric massblock, local is arranged.
When installing at the scene, utilize position adjustment structure to regulate the distance between permanent magnet and conductor plate to get final product fine adjustment damping, fast very convenient, adaptability is stronger.
Compared with embodiment one, the advantage of this routine described technological scheme is, owing to having set up concentrating flux plate 29 in eddy current tuned mass damping structure, significantly can strengthen magnetic induction intensity, improve eddy-current damping effect, when therefore working, power consumption is faster, and effectiveness in vibration suppression is better.Concentrating flux plate can utilize steel, iron material is made, economical and practical.Be noted that in addition; eccentric massblock is provided with eccentric structure; described eccentric structure is except already mentioned through hole; can also be other structures such as gap, projection or the groove that eccentric massblock is arranged; as long as eccentric effect can be realized; can be applied in the present invention, all in the protection domain of application claims.The application mode of this routine described eccentric eddy current tuned mass damping device of the present invention in structure to be damped is substantially identical with the description in embodiment one, no longer repeats at this.Certainly, except utilizing except connecting base is connected with metal anchorage by fastening piece, also together with can directly main shaft two ends being welded and fixed with metal anchorage, or together with connecting base is welded and fixed with metal anchorage, also can serve the same role, this point is applicable to all embodiments of the present invention, illustrates in the lump at this.
Embodiment six
Eccentric eddy current tuned mass damping device of the present invention as shown in Figure 10 and Figure 11, be with the difference of embodiment five, conductor plate 4 is connected by fastening piece 32 with concentrating flux plate 29, be provided with position adjustment structure 6 between concentrating flux plate 29 and main shaft 1, described position adjustment structure 6 is specially the feather key and keyway that arrange between concentrating flux plate 29 and main shaft 1.In addition, eccentric structure eccentric massblock 2 arranged is specially a through hole 30.In addition, on eccentric massblock 2, correspondence arranges two springs, is extension spring 5 and extension spring 31 respectively, and described extension spring 5 and extension spring 31 are arranged symmetrically with along the medial axis of main shaft 1.During application, extension spring 5 one end is connected with eccentric massblock 2, and the other end is connected with fixed structure 14; Extension spring 31 one end is connected with eccentric massblock 2, and the other end is connected with fixed structure 33.
Compared with embodiment five, the position adjustment structure that this routine described technological scheme can utilize feather key and keyway to form regulates magnet case and the distance between conductor plate and permanent magnet, and then fine adjustment system damping; In addition, eccentric massblock 2 is arranged extension spring 5 and extension spring 31 simultaneously, be conducive to the stable of system.Certainly, based on know-why of the present invention, also can more extension springs be set on eccentric massblock, also can realize good effect, in actual applications, the quantity of extension spring can be set according to requirement of engineering.In addition; based on the know-why of this example; and the know-why described in embodiment before; the position adjustment structure arranged between concentrating flux plate and main shaft; except can being the feather key and keyway that arrange between concentrating flux plate and main shaft; can also be the external thread section and locking nut that on main shaft, corresponding concentrating flux plate is arranged; or the tapped through hole that concentrating flux plate is arranged and jackscrew; identical effect can be played look into; can be applied in the present invention; only be described with word at this, no longer in addition accompanying drawing, all among the protection domain of application claims.
Embodiment seven
Eccentric eddy current tuned mass damping device of the present invention as shown in figure 12, be with the difference of embodiment six, concentrating flux plate 29 welds with main shaft 1 and is solidly fixed, and utilizes fastening piece 32 to be connected on concentrating flux plate 29 by conductor plate 4, is also provided with and adjusts pad 34 between conductor plate 4 and concentrating flux plate 29.In addition, eccentric structure eccentric massblock 2 arranged is specially the groove 35 of a blind hole structure.
Compared with embodiment six, the great advantage of this routine described technological scheme is, by changing the total thickness adjusting pad 34 between conductor plate 4 and concentrating flux plate 29, just can regulate the distance between conductor plate 29 and permanent magnet 3, and then fine adjustment system damping, its structure is more simple, and Security is better.
Embodiment eight
Eccentric eddy current tuned mass damping device of the present invention, is with the difference of embodiment seven as shown in figure 13, utilizes fastening piece 36 permanent magnet 3 and eccentric massblock 2 to be linked together, is provided with and adjusts pad 34 between permanent magnet 3 and eccentric massblock 2.In addition, eccentric structure eccentric massblock 2 arranged is specially a cylindrical bump 37.
Similar to embodiment seven, in this routine described technological scheme, by changing the total thickness adjusting pad 34 between permanent magnet 3 and eccentric massblock 2, just can regulate the distance between conductor plate 29 and permanent magnet 3, and then fine adjustment system damping, its structure is more simple, and Security is better.
Embodiment nine
Eccentric eddy current tuned mass damping device of the present invention as shown in figure 14, be with the difference of embodiment six, comprise two groups of eddy current tuned mass damping structures, wherein, main shaft 1, conductor plate 4, concentrating flux plate 29, permanent magnet 3, eccentric massblock 2, extension spring 5 and extension spring 31 form eddy current tuned mass damping structure described in a group; Main shaft 1, conductor plate 46, concentrating flux plate 47, permanent magnet 48, eccentric massblock 41, extension spring 43 and extension spring 44 form other one group of eddy current tuned mass damping structure.Two groups of eddy current tuned mass damping structures form a damper unit B, two groups of eddy current tuned mass damping structures in described damper unit B are arranged symmetrically with along the direction, medial axis of main shaft, wherein, the proximate end face of the permanent magnet 3 arranged respectively in two groups of eddy current tuned mass damping structures and permanent magnet 48 keeps polarity contrary, in two groups of eddy current tuned mass damping structures, the center of gravity of eccentric massblock is arranged symmetrically with along the medial axis of main shaft, at this, show as through hole 42 that through hole 30 that eccentric massblock 2 is arranged and eccentric massblock 41 are arranged to be arranged symmetrically with along the medial axis of main shaft.Two groups of eddy current tuned mass damping structures share a main shaft 1, as shown in figure 15, also rotary bearing 52 is provided with between eccentric massblock 41 and main shaft 1, main shaft 1 is provided with circlip 53 pairs of rotary bearings 52 and realizes spacing, and eccentric massblock 41 and permanent magnet 48 are fixed together by fastening piece 49.In addition, eccentric massblock 2 and permanent magnet 3 are also fixed together by fastening piece 36.For the ease of installing application, eccentric eddy current tuned mass damping device of the present invention also comprises an external frame 40, main shaft 1 two ends are separately fixed at end face and the bottom surface of external frame by adpting flange 50 and adpting flange 51, and extension spring 43 is diagonally connected with four root posts of external frame 40 with extension spring 31 is corresponding between two respectively with extension spring 44 and extension spring 5.
This routine described eccentric eddy current tuned mass damping device of the present invention is except all advantages with embodiment six, its maximum superior part is, when spacing between eccentric massblock 2 and eccentric massblock 41 is less, it is offset each other to the inertia shearing force of main shaft 1, the impact on main shaft can be reduced to greatest extent, make system more stable.
It is to be noted, in eccentric eddy current tuned mass damping device of the present invention shown in Figure 14, spacing between conductor plate 4 and permanent magnet 3, the spacing between conductor plate 46 and permanent magnet 48 and the spacing between eccentric massblock 2 and eccentric massblock 41, all only in order to know-why of the present invention is described, not necessarily be consistent with actual product, in actual applications, above-mentioned spacing according to requirement of engineering design and should be determined.In addition, extension spring one end is connected with eccentric massblock, and the other end, except can being fixedly linked with external frame, also can being connected with other fixed structures outside, also can realizing identical technique effect, also among the protection domain of application claims.
Embodiment ten
Eccentric eddy current tuned mass damping device of the present invention as shown in figure 16, be with the difference of embodiment nine, comprise four groups of eddy current tuned mass damping structures, four groups of eddy current tuned mass damping structure combination of two form two damper unit B, main shaft 65 in two damper unit B is connected by coupling 66 with main shaft 67, two damper unit B arrange along main shaft axial series respectively, in two damper unit B eccentric massblock center of gravity relative main medial axis Bi this be that 90 ° of angles are arranged, concrete, the through hole 69 relative main medial axis that the through hole 62 in the damper unit B of top, eccentric massblock 61 arranged and eccentric massblock 68 in the damper unit B of below are arranged is 90 ° of angles, the through hole 71 relative main medial axis that the through hole 62 in the damper unit B of top, eccentric massblock 61 arranged and eccentric massblock 70 in the damper unit B of below are arranged also is 90 ° of angles, accordingly, also there is such spatial relation between the through hole 64 in top damper unit B, eccentric massblock 63 arranged and through hole 69 and through hole 71.The other end of main shaft 65 and main shaft 67 is fixedly linked with the top of external frame 60 and bottom respectively.
Compared with embodiment nine, the great advantage of this routine described technological scheme is, due to eccentric massblock in two damper unit B center of gravity relative main medial axis Bi this be that 90 ° of angles are arranged, no matter vibrate and from which direction transmit, there are at least two group eddy current tuned mass damping structure generation work responses in capital, overcome the system when vibration is transmitted along through hole 30 center of circle and through hole 42 circle center line connecting direction of technological scheme described in Figure 14 and cannot produce the shortcoming of response, it can produce response to the vibrational excitation in any direction, thus really realize the object of comprehensive suppression building construction vibration.In addition; in this example; main shaft adopts split-type structural; recycling coupling connects main shaft 65 and main shaft 67, mainly based on the consideration reducing spindle processing difficulty and reduction assembling difficulty, in practical application; also the main shaft of integral type can be adopted; just the structure of main shaft is relatively more complicated, also can realize same effect, also among the protection domain of application claims.In addition, based on the know-why described in this example, also can on the basis of technological scheme shown in Figure 16, by on eccentric massblock in two groups of eddy current tuned mass damping structures, two groups of eccentric structures are set respectively, between two groups of eccentric structures relative main medial axis Bi this be that 90 ° of angles are arranged, eccentric structure relative main medial axis on two eccentric massblocks is arranged in 90 ° of angles between any two respectively, such as shown in figure 17, eccentric massblock 2 is arranged through hole 30 and through hole 104, through hole 30 and through hole 104 relative main medial axis are 90 ° of angles; Eccentric massblock 41 is arranged through hole 42 and through hole 103, through hole 42 and through hole 103 relative main medial axis are 90 ° of angles; Have relative main medial axis between through hole 30 and through hole 103 to be also 90 ° of angles again, between through hole 104 and through hole 42, relative main medial axis is also in 90 ° of angles.Like this; also the system when vibration is transmitted along through hole 30 center of circle and through hole 42 circle center line connecting direction of technological scheme shown in Figure 14 can be overcome and the shortcoming of response cannot be produced; it can produce response to the vibrational excitation in any direction; thus really realize the object of comprehensive suppression building construction vibration, also among the protection domain of application claims.
Similar to the explanation in embodiment ten, in eccentric eddy current tuned mass damping device of the present invention shown in Figure 16 and Figure 17, often organize the spacing between contiguous eccentric massblock and eccentric massblock in spacing between conductor plate in eddy current tuned mass damping structure and permanent magnet and adjacent eddy current tuned mass damping structure, all only in order to know-why of the present invention is described, not necessarily be consistent with actual product, in actual applications, above-mentioned spacing according to requirement of engineering design and should be determined.
Embodiment 11
Eccentric eddy current tuned mass damping device of the present invention as shown in figure 18, be with the difference of embodiment one, described eccentric massblock 2 is fixedly installed on main shaft 1, one end of extension spring 5 is connected with eccentric massblock, the other end maintenance that is connected with the fixed structure 14 of surrounding maintains static, conductor plate 4 is fixedly installed on the side of eccentric massblock 2 perpendicular to direction, main shaft 1 medial axis, during application as shown in Figure 16, concrete conductor plate 4 is positioned at below eccentric massblock 2, and be fixedly installed on connecting base 16 by fastening piece 111, permanent magnet 3 is between conductor plate 4 and eccentric massblock 2 and be fixedly installed on eccentric massblock 2 by fastening piece 110, gap is left between conductor plate 4 and permanent magnet 3, described conductor plate 4, permanent magnet 3, main shaft 1, extension spring 5 and eccentric massblock 2 form one group of eddy current tuned mass damping structure jointly.
During application, structure 7 to be damped to the top of main shaft 1 and upper strata be connected by connecting base 9, concrete, connecting base 9 is fixed on metal anchorage 8 pre-buried in upper strata structure to be damped 7 by fastening piece 11, is provided with rotary bearing 112 between connecting base 9 and main shaft 1; Be connected with lower floor structure 19 to be damped the bottom of main shaft 1 by connecting base 16, concrete, connecting base 16 is fixed on metal anchorage 17 pre-buried in lower floor's structure to be damped 19 by fastening piece 18, is provided with rotary bearing 113 between connecting base 16 and main shaft 1.
In this routine described eccentric eddy current tuned mass damping device of the present invention, eccentric massblock 2 can rotate together with main shaft 1, and be provided with rotary bearing respectively between main shaft 1 and connecting base 9 and 16, its resistance of start is very little, therefore, when upper strata structure to be damped 7 or/and when vibration occurs lower floor's structure 19 to be damped, eccentric massblock 2 can deflect with main shaft 1 rapidly together, structural vibration is converted into rotation, drive permanent magnet 3 to rotate simultaneously, certainly, owing to being provided with extension spring 5, the rotation of eccentric massblock 2 and permanent magnet 3 is the beat motion that left and right replaces, can the frequency that deflects of eccentric adjustment mass block 2 by extension spring 5.Because conductor plate 4 does not rotate, when permanent magnet 3 counter conductor plate 4 reciprocating rotation, relative movement cutting magnetic line between permanent magnet 3 and conductor plate 4, in conductor plate 4, induction generates electric convolution, influence electricity eddy current produces the electromagnetic field contrary with permanent magnet 4 magnetic pole, hinder the motion of permanent magnet 4, and then form the damping suppressed needed for eccentric massblock rotation.In the process, conductor plate 4 internal electrical eddy current makes conductor plate generate heat, and is the heat energy that conductor plate temperature raises, realizes mechanical energy in relative rotation power consumption, the ocsillator strenght of structure to be damped is decayed rapidly, and then realizes good protective action.
In this example, conductor plate 4 is fixedly installed on the below of eccentric massblock 2, permanent magnet 3 is also arranged between conductor plate 4 and eccentric massblock 2.Certainly; based on the know-why described in this example; conductor plate 4 also can be fixedly installed on the top of eccentric massblock 2; corresponding permanent magnet 3 is also arranged on eccentric massblock upper surface; between conductor plate 4 and eccentric massblock 2; also same effect can be realized, also among the protection domain of application claims.In addition; this example has identical advantage with embodiment one; no longer repeat at this; difference is, when needing to adjust the distance between permanent magnet 3 and conductor plate 4, can set up certain thickness adjustment pad (not shown) between eccentric massblock 2 and permanent magnet 3; or between conductor plate 4 and connecting base 16, set up certain thickness adjustment pad; identical technique effect can be realized, all among the protection domain of application claims, be only described with word at this.
Embodiment 12
Major axis horizontal or be in tilted layout, except main shaft can being arranged vertically and applying, also can be applied by eccentric eddy current tuned mass damping device of the present invention.Eccentric eddy current tuned mass damping device of the present invention, is with the difference of embodiment one, also comprises concentrating flux plate 29 in eddy current tuned mass damping structure as illustrated in figures 19 and 20, and concentrating flux plate 29 is positioned at conductor plate 4 side far away apart from permanent magnet 3.In addition, spring is specially the elastic rope 117 that two rubber school materials are made.During application, one end of elastic rope 117 is connected with eccentric massblock 2, and the other end is fixed on the fixed structure 116 of top and keeps maintaining static; Structure 115 to be damped to one end of main shaft 1 and right side be connected by connecting base 9, concrete, connecting base 9 is fixed on metal anchorage 8 pre-buried in the structure 115 to be damped of right side by fastening piece 11, is provided with rotary bearing 112 between connecting base 9 and main shaft 1; Structure 19 to be damped to the other end of main shaft 1 and left side be connected by connecting base 16, concrete, connecting base 16 is fixed on metal anchorage 17 pre-buried in the structure 114 to be damped of left side by fastening piece 18, is provided with rotary bearing 113 between connecting base 16 and main shaft 1.
This is identical for the working principle of this routine described eccentric eddy current tuned mass damping device of the present invention and advantage and embodiment's hendecyl, no longer repeats at this.Compared with embodiment 11, in this routine described technological scheme, owing to having set up concentrating flux plate 29, significantly can strengthen magnetic induction intensity, improve eddy-current damping effect, when therefore working, power consumption is faster, and effectiveness in vibration suppression is better.In addition, elastic rope 117, except being arranged on except above eccentric massblock 2, also can be arranged on the below of eccentric massblock, also can realize same effect, in this accompanying drawing explanation no longer in addition, also among the protection domain of application claims.
It is to be noted, based on the know-why of the above embodiment of the present invention, spring in the present invention can be varied, except already mentioned extension spring, elastic rope, can also be the concrete forms such as torsion spring, leaf spring, Compress Spring, shear-type rubber spring, polyurethane spring.Such as, as shown in figure 21, Compress Spring 121 can be utilized to substitute elastic rope 117 in technological scheme shown in Figure 20, during application, eccentric massblock 2 is fixed welding baffle plate 118 is set, Compress Spring 121 is set between baffle plate 118 both sides and fixed structure 116, when there is beat in eccentric massblock 2, the Compress Spring 121 arranged by baffle plate 118 Repeated Compression both sides; In addition, also can be as shown in figure 22, baffle plate 118 is set fixing welding on eccentric massblock 2, baffle plate 118 both sides and fixed structure 116 between the metal anchorage 119 be fixedly installed arrange shear-type rubber spring 120, two ends of shear-type rubber spring 120 are welded and fixed with baffle plate 118 and metal anchorage 119 respectively and are connected, when beat occurs eccentric massblock 2, repeatedly oppress shear-type rubber spring 120 by baffle plate 118.These are all the simple change based on the technology of the present invention principle, can realize same or analogous technique effect, illustrate no longer one by one at this, all among the protection domain of application claims.
Can be found out by above-described embodiment, compared with the TMD product of existing most widely used various elastic element bearing mass, the present invention has following major advantage: the mass block of (1) eccentric of the present invention eddy current tuned mass damping device realizes yaw motion by the rotary bearing that frictional force is minimum, its structural friction is little, starts sensitive; (2) eccentric eddy current tuned mass damping device of the present invention by changing the spacing between permanent magnet and conductor plate, can realize the fine adjustment of damping parameter, convenient and swift; (3) eccentric eddy current tuned mass damping device of the present invention achieves being separated completely of rigidity and damping, and damping force becomes accurate linear relationship with the movement velocity of mass block, has no effect during adjustment damping force to system frequency; (4) eccentric eddy current tuned mass damping device of the present invention utilizes permanent magnet to provide the magnetic field formed needed for electric convolution, without the need to the outside resources outside the amount of imports, just can realize larger damping ratio, especially for outdoor structures as bridge and tall building etc., avoid because inconvenience maybe can not ensure the harmful effect that the normal use of reliable power supply to product causes, its applicability is better; (5) eccentric eddy current tuned mass damping device of the present invention does not rely on mechanical friction to consume energy, there is no overhang iso-stress lumped elements, also there is not the problems such as sealing simultaneously, therefore reliability compares other TMD device existing with working life larger lifting, particularly can also realize substantially non-maintaining, cost performance is higher; (6) eccentric eddy current tuned mass damping device of the present invention can change the vibration of building structure into rotation by translation, recycling eddy current effect consumes, it can produce response to the vibrational excitation of multiple directions, even all directions, thus realizes the object of comprehensive suppression building construction vibration; (7) do not comprise liquid damping in structure of the present invention, there is not the problem of leakage, do not have user to restriction, vertically can arrange, also can horizontally arrange, can also be in tilted layout, very convenient, and environmental protection.Its structure is simple, practical, safe and reliable, cost performance is higher, it can be widely used in the structural vibration control of various high level, skyscraper, thin and tall structure or long span building, also can be applied to the vibration control of various machinery, be specially adapted to subsidiary torsional vibration or/and the control of the complex vibration operating mode such as multi-direction vibration in horizontal plane, market application foreground is very wide.In addition; above-described embodiment mainly conveniently understands know-why of the present invention; be not limited to the content that above-described embodiment is recorded; the technology contents that above-described embodiment is recorded also can carry out cross-reference; based on the technology of the present invention principle; those skilled in the art can re-start combination to technological scheme described in above-described embodiment or utilize similar technique simply to replace, as long as based on know-why of the present invention, in protection scope of the present invention wherein some element.
Claims (19)
1. an eccentric eddy current tuned mass damping device, comprise conductor plate and permanent magnet, characterized by further comprising main shaft, spring and eccentric massblock, described eccentric massblock is fixedly installed on main shaft or between eccentric massblock and main shaft and is provided with rotary bearing, one end of spring is connected with eccentric massblock, conductor plate is fixedly installed on the side of eccentric massblock perpendicular to direction, main shaft medial axis, permanent magnet is between conductor plate and eccentric massblock and be fixedly installed on eccentric massblock, gap is left between conductor plate and permanent magnet, described conductor plate, permanent magnet, main shaft, spring and eccentric massblock form one group of eddy current tuned mass damping structure jointly.
2. eccentric eddy current tuned mass damping device according to claim 1, is characterized in that described spring comprises extension spring, torsion spring, leaf spring, Compress Spring, shear-type rubber spring, polyurethane spring and elastic rope.
3. eccentric eddy current tuned mass damping device according to claim 1, it is characterized in that being connected by straight-arm bar linkage structure or curved arm rod structure between eccentric massblock with main shaft, straight-arm bar linkage structure or between curved arm rod structure and main shaft, rotary bearing is set.
4. eccentric eddy current tuned mass damping device according to claim 3, it is characterized in that eccentric massblock comprises at least two sub-eccentric massblocks, every sub-eccentric massblock is connected with main shaft respectively by straight-arm bar linkage structure or curved arm rod structure, every sub-eccentric massblock is connected with spring respectively, and is asymmetricly arranged in each other around main shaft between sub-eccentric massblock.
5. eccentric eddy current tuned mass damping device according to claim 1, is characterized in that also comprising concentrating flux plate in eddy current tuned mass damping structure, and described concentrating flux plate is positioned at conductor plate distance permanent magnet side far away.
6. eccentric eddy current tuned mass damping device according to claim 5, is characterized in that utilizing fastening piece to be fixedly linked between concentrating flux plate and conductor plate.
7. eccentric eddy current tuned mass damping device according to claim 6, is characterized in that concentrating flux plate and main shaft are solidly fixed, and utilizes fastening piece to be connected on concentrating flux plate by conductor plate.
8. eccentric eddy current tuned mass damping device according to claim 7, is characterized in that being provided with adjustment pad between conductor plate and concentrating flux plate.
9. eccentric eddy current tuned mass damping device according to claim 6, it is characterized in that being provided with position adjustment structure between concentrating flux plate and main shaft, described position adjustment structure comprises the feather key and keyway that arrange between concentrating flux plate and main shaft, or the external thread section that on main shaft, corresponding concentrating flux plate is arranged and locking nut, or the tapped through hole that concentrating flux plate is arranged and jackscrew.
10. eccentric eddy current tuned mass damping device according to claim 1, is characterized in that in eddy current tuned mass damping structure, on each eccentric massblock, correspondence arranges two groups of springs, and two groups of springs are arranged symmetrically with along the medial axis of main shaft.
11. eccentric eddy current tuned mass damping devices according to claim 1, characterized by further comprising external frame, main shaft is fixed on external frame.
12. eccentric eddy current tuned mass damping devices according to claim 11, is characterized in that, in eddy current tuned mass damping structure, one end of spring is connected with eccentric massblock, and the other end is fixedly connected on external frame and keeps motionless.
13. eccentric eddy current tuned mass damping devices according to claim 1, it is characterized in that being provided with position adjustment structure between conductor plate and main shaft, described position adjustment structure comprises the feather key and keyway that arrange between conductor plate and main shaft, or the external thread section that on main shaft, corresponding conductor plate is arranged and locking nut, or the tapped through hole that conductor plate is arranged and jackscrew.
14. eccentric eddy current tuned mass damping devices according to claim 1, it is characterized in that eccentric massblock is provided with eccentric structure, described eccentric structure comprises through hole, gap, projection or groove.
15. eccentric eddy current tuned mass damping devices according to claim 1, is characterized in that utilizing fastening piece permanent magnet and eccentric massblock to be linked together, are provided with adjustment pad between permanent magnet and eccentric massblock.
16. eccentric eddy current tuned mass damping devices according to claim arbitrary in claim 1-15, it is characterized in that comprising two groups of eddy current tuned mass damping structures, two groups of eddy current tuned mass damping structures form a damper unit, two groups of eddy current tuned mass damping structures in described damper unit are arranged symmetrically with along the direction, medial axis of main shaft, wherein, the proximate end face of the permanent magnet arranged respectively in two groups of eddy current tuned mass damping structures keeps polarity contrary, in two groups of eddy current tuned mass damping structures, the center of gravity of eccentric massblock is arranged symmetrically with along the medial axis of main shaft.
17. eccentric eddy current tuned mass damping devices according to claim 16, it is characterized in that comprising four groups of eddy current tuned mass damping structures, four groups of eddy current tuned mass damping structure combination of two form two damper units, two damper units are arranged along main shaft axial series respectively, in two damper units eccentric massblock center of gravity relative main medial axis Bi this be 90 ° of angles layouts.
18. eccentric eddy current tuned mass damping devices according to claim 17, is characterized in that being connected by coupling between the main shaft in two damper units.
19. eccentric eddy current tuned mass damping devices according to claim 16, it is characterized in that, in two groups of eddy current tuned mass damping structures, eccentric massblock is respectively equipped with two groups of eccentric structures, between two groups of eccentric structures relative main medial axis Bi this be that 90 ° of angles are arranged, the eccentric structure relative main medial axis on two eccentric massblocks is arranged in 90 ° of angles between any two respectively.
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| CN104929035B (en) * | 2015-04-28 | 2016-08-31 | 西安市市政设施管理局 | A kind of bridge electromagnetic vibration damping system and control method |
| CN106051015B (en) * | 2016-07-27 | 2017-05-17 | 武汉理工大学 | Frequency-adjustable broadband dynamic vibration absorber and vibration absorbing method thereof |
| CN109610302B (en) * | 2019-02-01 | 2023-09-29 | 青岛理工大学 | Composite bridge torsional vibration control system |
| CN111692654A (en) * | 2019-03-13 | 2020-09-22 | 珠海格力电器股份有限公司 | Tuned mass damper of electric eddy current, compressor assembly and air conditioner |
| CN112744285B (en) * | 2019-10-31 | 2021-12-28 | 郑州宇通重工有限公司 | Pure electric sanitation vehicle and vehicle steering system |
| WO2021253169A1 (en) * | 2020-06-15 | 2021-12-23 | 大连理工大学 | Non-linear dynamic vibration absorber having double-ringed strong magnet arrays for suspender vibration damping, and design method |
| CN113669414B (en) * | 2021-07-29 | 2022-04-15 | 浙江大学 | Torsional vibration absorber unit based on bistable folded paper and vibration absorber |
| CN114103191B (en) * | 2021-11-15 | 2022-12-06 | 襄阳惠强新能源材料科技有限公司 | Method for manufacturing online pretreatment film |
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