CN105133744B - Tuned mass damper structure with continuously variable frequency - Google Patents
Tuned mass damper structure with continuously variable frequency Download PDFInfo
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- CN105133744B CN105133744B CN201510627901.8A CN201510627901A CN105133744B CN 105133744 B CN105133744 B CN 105133744B CN 201510627901 A CN201510627901 A CN 201510627901A CN 105133744 B CN105133744 B CN 105133744B
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- resilient support
- sliding part
- mass damper
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Abstract
The invention discloses a tuned mass damper structure with continuously variable frequency. The tuned mass damper structure comprises a main mass block, a guide mechanism, a constant-stiffness elastic support, a damping unit and a base, wherein the main mass block and the base together constitute a main support structure; the tuned mass damper structure further comprises a stiffness-adjustable elastic support positioned between the main mass block and the base; the stiffness-adjustable elastic support comprises an elastic beam, a sliding part and a fastening piece; the right end of the elastic beam is fixedly mounted on the base; the sliding part is mounted on the main support structure in a position-adjustable manner and can slide in the longitudinal direction of the elastic beam; the fastening piece is used for fixing the sliding part on the main support structure after the sliding part slides to a set position. The tuned mass damper structure has the advantages that stepless adjustment of the support stiffness can be realized in a larger range, tuned mass damper products with the same models can meet vibration damping requirements of base structures of different vibration frequency and also can be used for reducing vibration of base structures with time variable vibration frequency.
Description
Technical field
The invention belongs to vibration isolation technique field, more particularly, to a kind of damping unit.
Background technology
Tuned mass damper is a kind of passive-type vibration absorber being widely adopted in recent years, due to its simple structure,
The advantages of when using without the need for external energy input, good stability, it is widely used in micro-vibration control and the machine of civil engineering structure
Tool equipment subtracts the fields such as vibration isolation.
Tuned mass damper is made up of mass, spring and the part of damping system three.By by tuned mass damper
The natural frequency of vibration be adjusted near controlled structure frequency, to change the resonance characteristics of controlled structure, so as to by shaking in controlled structure
Energy is transferred on tuned mass damper, is then fallen the energy dissipation of transfer by damping unit, to reach reduction quilt
The purpose of control structural vibration.
Tuned mass damper only can be only achieved optimal effectiveness in vibration suppression near optimal design frequency, however, due to
The impact of the factors such as Engineering Vibration, construction error, the actual natural frequency of controlled structure inevitably occurs partially with design load
Difference, this will cause passively to tune class damping unit effectiveness in vibration suppression and be decreased obviously even to fail.
Existing passive tuned mass damper adjusts quality or adjustment spring often by the quantity of increase and decrease steel plate
Number of active coils to adjust rigidity, its tuning range extremely limited (be less than ± 15%), and major part continuously can not adjust accurately
Save, be difficult in adapt to different frequency of vibration needs.
The content of the invention
For existing tuned mass damper product resonant frequency it is unadjustable in other words can not continuously accurate adjustment, difficulty
To adapt to the defect of different frequency of vibration needs, the invention provides a kind of tuning quality damping of resonant frequency continuously adjustable
Device device, it on the premise of not changing or changing any parts of product, can on a large scale continuously adjust the resonance frequency of product
Rate, is allowed to accurately consistent with the frequency of vibration of institute installation site practical structures, so as to reach optimal shock attenuation result.
For achieving the above object, it is proposed, according to the invention, there is provided a kind of frequency can continually varying tuned mass damper, bag
Include parenchyma gauge block, guiding mechanism, determine rigidity resilient support, damping unit and base, the parenchyma gauge block and base are collectively formed
Main supporting structure, the guiding mechanism, determine rigidity resilient support, damping unit be separately mounted on the main supporting structure, its
It is characterised by,
Also include the adjustable rigidity resilient support being located between the parenchyma gauge block and the base, the adjustable rigidity bullet
Property support include spring beam, sliding part and securing member, wherein, the right-hand member of the spring beam is fixedly mounted on the base, its
Left end is through the sliding part and its upper surface and/or lower surface can be with the sliding parts when tuned mass damper vibrates
Contact, the slide positions be adjustably mounted on the main supporting structure and can along the longitudinal sliding motion of the spring beam,
The securing member is used to that sliding part to be fixed on into the main supporting structure after the sliding part slides into setting position.
Preferably, the guiding mechanism includes slide block and guide rod, and the slide block is fixedly mounted on the parenchyma gauge block, institute
State that guide rod is vertically arranged and its lower end is fixedly mounted on the base, the slide block can along the longitudinal sliding motion of the guide rod,
So that the parenchyma gauge block is vertically moved.
Preferably, it is described determine rigidity resilient support include spring, the spring is installed on the guiding mechanism, its upper end
It is resisted against on the parenchyma gauge block, its lower end is resisted against on the upper surface of the base left end；
Chute is provided with the parenchyma gauge block, the chute is T-shaped, it includes the first larger chute of width and width
Less second chute, correspondingly, the sliding part is integrally T-shaped, and it includes the first slip that can be slided in the first chute
Portion and the second sliding part that can be slided in the second chute；The securing member is locking nut, and it is threaded in described second
On sliding part and the sliding part can be locked on the parenchyma gauge block.
Preferably, the lowest vibration frequency configuration when tuned mass damper works is f1, maximum frequency of oscillation sets
It is set to f2, parenchyma gauge block quality settings be m, determine rigidity resilient support and adjustable rigidity flexibly support quantity be disposed as n, press
Determine the rigidity of rigidity resilient support and adjustable rigidity resilient support according to following methods matching：
Determine rigidity k of single spring in rigidity resilient supportsLess than k1=4 π2mf1 2/ n, and rigidity k of single springs
Meet 0.6k1≤ks≤0.8k1；Minimum rigidity k of single spring beam in adjustable rigidity resilient supportb1Meet kb1=k1-ks, most
High rigidity kb2MeetNamely adjustable rigidity resilient support in single spring beam maximum
Effective length LmaxMeetMinimum effective length LminMeetWherein E
With the Young's moduluss and cross sectional moment of inertia that I is distributed as spring beam.
Preferably, it is described determine rigidity resilient support include spring, the spring is installed on the guiding mechanism, its upper end
It is resisted against on the parenchyma gauge block, its lower end is resisted against on the upper surface of the base left end；
Be provided with chute on the base, the chute is in inverted T-shaped, it include the first larger chute of width and width compared with
The second little chute, correspondingly, the sliding part is in integrally inverted T-shaped, and it includes the first slip that can be slided in the first chute
Portion and the second sliding part that can be slided in the second chute；The securing member is locking nut, and it is threaded in described second
On sliding part and the sliding part can be locked on the parenchyma gauge block.
Preferably, the lowest vibration frequency configuration when tuned mass damper works is f1, maximum frequency of oscillation sets
It is set to f2, parenchyma gauge block quality settings be m, determine rigidity resilient support and adjustable rigidity flexibly support quantity be disposed as n, press
Determine the rigidity of rigidity resilient support and adjustable rigidity resilient support according to following methods matching：
Determine rigidity k of single spring in rigidity resilient supportsIt is not less thanAnd the rigidity of single spring
ksMeet 1.5k2≤ks≤2k2；Highest rigidity k of single spring beam in adjustable rigidity resilient supportb2Meet kb2=1/ (1/k2-
1/ks), minimum rigidity k of single spring beam in adjustable rigidity resilient supportb1Meet kb1=1/ (1/k1-1/ks), namely it is adjustable
Maximum effective length L of single spring beam in rigidity resilient supportmaxMeetMinimum effective length
LminMeetWherein E and I are distributed as the Young's moduluss and cross sectional moment of inertia of spring beam.
Preferably, the downward compressible stroke of the spring is no less than 15mm.
Preferably, the quantity of the adjustable rigidity resilient support flexibly supports circumferential equal for multiple and these adjustable rigidities
Even arrangement.
Preferably, the quantity of adjustable rigidity resilient support is four and these square cloth of adjustable rigidities resilient support
Put.
Preferably, the damping unit is piston type damping unit, viscoelastic material damping unit, magnetorheological damping unit
Or electromagnetic type damping unit, the total damping ratio of damping unit is being not less than 0.05, not higher than 0.15.
In general, by the contemplated above technical scheme of the present invention compared with prior art, can obtain down and show
Beneficial effect：
1) present invention can continuously be adjusted and adjusted on the premise of parenchyma gauge block or elastic support structure parts is changed without
The support stiffness of humorous mass damper, the vibration under making the resonant frequency of tuned mass damper and base structure in working order
Frequency is accurately consistent, so as to improve the resonance effect of system；
2) present invention can in the larger context realize the step-less adjustment of support stiffness, so as to ensure the tuning of same model
Mass damper product can be used for the vibration damping demand of the base structure of different frequency of vibration, also can be used for frequency of vibration time-varying
Base structure vibration damping.
Description of the drawings
Fig. 1 and Fig. 2 are the sectional view of the embodiment of the present invention one, wherein, Fig. 1 is along the sectional view of line A-A, Fig. 2 in Fig. 2
For the echelon sectional view in Fig. 1 along line B-B；
Fig. 3 and Fig. 4 are the sectional view of the embodiment of the present invention two, wherein, Fig. 3 is along the sectional view of line C-C, Fig. 4 in Fig. 4
For the echelon sectional view in Fig. 3 along line D-D.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.As long as additionally, technical characteristic involved in invention described below each embodiment
Not constituting conflict each other just can be mutually combined.
Embodiment one
With reference to Fig. 1, Fig. 2, a kind of frequency can continually varying tuned mass damper, including parenchyma gauge block 11, Guiding machine
Structure 12, determine rigidity resilient support 13, damping unit 15 and base 16, the parenchyma gauge block 11 and base 16 collectively form main support
Structure, the guiding mechanism 12, determine rigidity resilient support 13, damping unit 15 be separately mounted on the main supporting structure, hinder
Buddhist nun's unit 15 and guiding mechanism 12 are separately mounted between parenchyma gauge block 11 and base 16, and the former acts the work for absorbing vibrational energy
With the latter plays a part of to limit the direction of motion of parenchyma gauge block 11.In addition, also including being located at the parenchyma gauge block 11 and the base
Adjustable rigidity resilient support 14 between 16, adjustable rigidity resilient support 14 includes spring beam 141, sliding part 142 and tight
Firmware, wherein, the right-hand member of the spring beam 141 is fixedly mounted on the base 16, and its left end passes through the sliding part 142 simultaneously
And its upper surface and/or lower surface can contact when tuned mass damper vibrates with the sliding part 142.Therefore, initial
When not vibrating, i.e., before tuned mass damper vibration, the upper surface and lower surface of spring beam 141 can be all the time with elastic component
142 contacts, or the front spring beam 141 of vibration can also be that only upper surface contacts all the time, and lower surface and sliding part 142
As far as possible little gap is kept, to be advisable less than 0.1mm, or spring beam 141 can also be that only lower surface connects before vibration
Touch and contact all the time, and upper surface keeps as far as possible little gap with sliding part 142, to be advisable less than 0.1mm；Or bullet before vibration
Property beam 141 can also be upper surface and lower surface keeps as far as possible little gap with sliding part 142, to be advisable less than 0.1mm,
Anyway to ensure that upper surface and/or lower surface be able to will contact with sliding part 142 when tuned mass damper vibrates.
The position of the sliding part 142 is adjustably mounted on the main supporting structure and can be along the spring beam 141
Longitudinal sliding motion, the securing member is used to that sliding part 142 to be fixed on into the master after the sliding part 142 slides into setting position
In supporting construction.Preferably, the base 16 includes pedestal 161, spring beam connecting seat 162 and damping unit lower connecting plate 163,
The spring beam connecting seat 162 is arranged on the pedestal 161, and it is single that the damping unit lower connecting plate 163 is used for connection damping
The lower end of unit 15.
The present embodiment determine rigidity resilient support 13 and adjustable rigidity resilient support 14 is fixedly connected in parallel
Between parenchyma gauge block 11 and base 16.Determine rigidity to flexibly support 13 gravity of balance parenchyma gauge block 11 and provide part support just
The effect of degree.Adjustable rigidity resilient support 14 is made up of spring beam 141 and sliding part 142, as illustrated, the right side of sliding part 142
Hold to the distance of the left end of spring beam connecting seat 162 be adjustable rigidity resilient support 14 effective length, remember that its value for L, then may be used
The vertical actually active rigidity for adjusting rigidity resilient support 14 is kb=3EI/L3.The position of mobile sliding part 142 means that change can
Effective length L of rigidity resilient support 14, namely the support stiffness of the change actual contribution of spring beam 141 are adjusted, thus can be continuously big
The resonant frequency of range regulation system, is allowed to accurately consistent with the structural vibration frequency of institute installation site, optimal so as to reach
Shock attenuation result.
Preferably, the guiding mechanism 12 includes slide block 122 and guide rod 121, and the slide block 122 is fixedly mounted on the master
On mass 11, the guide rod 121 is vertically arranged and its lower end is fixedly mounted on the base 16, the energy of the slide block 122
Along the longitudinal sliding motion of the guide rod 121, so that the parenchyma gauge block 11 is vertically moved.Preferably, parenchyma gauge block 11 is wrapped
Quality block main body 111, slide attachment plate 112 and damping unit upper junction plate 113 are included, the slide attachment plate 112 and damping are single
First upper junction plate 113 is fixedly mounted on the slide attachment plate 112, and the slide block 122 is fixedly mounted on the slide block and connects
On fishplate bar 112, the damping unit upper junction plate 113 is used to connect the upper end of the damping unit 15.
Preferably, described to determine rigidity resilient support 13 including spring 131, the spring 131 is installed on the guiding mechanism
On 12, its upper end is resisted against on the parenchyma gauge block 11, and its lower end is resisted against on the base 16；
Chute is provided with the parenchyma gauge block 11, the chute is T-shaped, it includes the first larger chute of width and width
Less second chute is spent, correspondingly, the sliding part 142 is overall T-shaped, and it includes first for sliding in the first chute
Sliding part and the second sliding part that can be slided in the second chute；The securing member is locking nut 143, and it is threaded in institute
State on the second sliding part and the sliding part 142 can be locked on the parenchyma gauge block 11.
By the way of being coordinated using guide rail and sliding part, and securing member can also adopt wing bolt, slide
Chute is set on moving part, then wing bolt is connected on parenchyma gauge block through after chute, can also make sliding part move to suitable position
Postpone and lock sliding part using wing nut.
Preferably, the lowest vibration frequency configuration when tuned mass damper works is f1, maximum frequency of oscillation sets
It is set to f2, the quality settings of parenchyma gauge block 11 be m, determine rigidity resilient support 13 and adjustable rigidity flexibly support 14 quantity be respectively provided with
For n, the rigidity for determining rigidity resilient support 13 and adjustable rigidity resilient support 14 is matched in accordance with the following methods：
Determine rigidity k of single spring 131 in rigidity resilient support 13sLess than k1=4 π2mf1 2/ n, and single spring 131
Rigidity ksMeet 0.6k1≤ks≤0.8k1；Minimum rigidity k of single spring beam 141 in adjustable rigidity resilient support 14b1Meet
kb1=k1-ks, highest rigidity kb2MeetNamely adjustable rigidity resilient support 14 in it is single
Maximum effective length L of spring beam 141maxMeetMinimum effective length LminMeetWherein E and I are distributed as the Young's moduluss and cross sectional moment of inertia of spring beam 141.
Preferably, the guiding mechanism 12 and/or determine the quantity of rigidity resilient support 13 for multiple, single spring 131 to
Under compressible stroke be no less than 15mm.
Preferably, the quantity of the adjustable rigidity resilient support 14 is flexibly supported 14 weeks for multiple and these adjustable rigidities
To being evenly arranged.
Preferably, the quantity of adjustable rigidity resilient support 14 is for four and these adjustable rigidities resilient support 14 are in pros
Shape is arranged.
Preferably, the damping unit 15 is piston type damping unit, viscoelastic material damping unit, magnetorheological damping list
Unit or electromagnetic type damping unit, the total damping ratio of damping unit 15 is being not less than 0.05, not higher than 0.15.
In the present embodiment, determine rigidity resilient support 13 and adjustable rigidity resilient support 14 is connected to according to mode in parallel
Between parenchyma gauge block 11 and base 16, the spring 131 for now determining rigidity resilient support 13 is not pressed in the upper surface of spring beam 141
On, therebetween detached.
Guiding mechanism 12, determine preferably each four groups of rigidity resilient support 13, adjustable rigidity resilient support 14；Damping unit 15
Number select to be one, the center of tuned mass damper is arranged in, on the damping unit on its upper end and parenchyma gauge block 11
Connecting plate 113 is hinged, and its lower end is hinged with the damping unit lower connecting plate 163 on base 16.Guide rod 121 in guiding mechanism 12
It is fixedly connected on the pedestal 161 in base 16, slide block 122 is fixedly connected on the slide attachment plate 112 in parenchyma gauge block 11.
Four groups of cause determines total support of the rigidity summation of rigidity resilient support 13 and adjustable rigidity resilient support 14 for tuned mass damper
Rigidity, therefore the concrete structure of rigidity resilient support 13 is determined from the relatively small spring 131 of rigidity, adjustable rigidity resilient support 14
Concrete structure in select the relatively small spring beam 141 of rigidity.To save space and being convenient to mount and dismount, each group of guiding mechanism 12
It is placed in determining inside the spring 131 of rigidity resilient support 13.One end of spring beam 141 in adjustable rigidity resilient support 14 is fixed
It is connected on base 16, the other end is through sliding part 142 and can be relative to sliding part 142 along longitudinally slidably.Sliding part 142
Can be in the chute in parenchyma gauge block 11 along slidably, sliding part 142 is by lock with the parallel longitudinal direction of spring beam 141
Tight nut 143 is fixed on parenchyma gauge block 11.Spring beam connecting seat 162, damping unit lower connecting plate 163 in base 16 is solid
Surely it is connected on pedestal 161.
In the present embodiment, the method for regulating system resonant frequency is as follows：If reducing the resonant frequency of system, unclamp
Locking nut 143, mobile sliding part 142 makes it away from one end that spring beam 141 is fixedly connected with base 16, then tightens locking screw
Female 143, then the actual support rigidity reduction of adjustable rigidity resilient support 14, system resonance frequencies are reduced；If improving system
Resonant frequency, then only need to by sliding part 142 to the one end being fixedly connected with base 16 near spring beam 141 move suitably away from
From.In order to reach preferable frequency modulation effect, each adjustable rigidity resilient support 14 is entered in the same manner with amplitude
Row is adjusted.
Embodiment two
With reference to Fig. 3, Fig. 4, a kind of frequency can continually varying tuned mass damper, including parenchyma gauge block 21, Guiding machine
Structure 22, determine rigidity resilient support 23, damping unit 25 and base 26, the parenchyma gauge block 21 and base 26 collectively form main support
Structure, the guiding mechanism 22, determine rigidity resilient support 23, damping unit 25 be separately mounted on the main supporting structure, hinder
Buddhist nun's unit 25 and guiding mechanism 22 are separately mounted between parenchyma gauge block 21 and base 26, and the former acts the work for absorbing vibrational energy
With the latter plays a part of to limit the direction of motion of parenchyma gauge block 21.In addition, also including being located at the parenchyma gauge block 21 and the base
Adjustable rigidity resilient support 24 between 26, adjustable rigidity resilient support 24 includes spring beam 241, sliding part 242 and tight
Firmware, wherein, the right-hand member of the spring beam 241 is fixedly mounted on the base 26, and its left end passes through the sliding part 242 simultaneously
And its upper surface and/or lower surface can contact when tuned mass damper vibrates with the sliding part 242.Therefore, initial
When not vibrating, i.e., before tuned mass damper vibration, the upper surface and lower surface of spring beam 241 can be all the time with elasticity
The contact of part 242, or the front spring beam 241 of vibration can also be that only upper surface contacts all the time, and lower surface and sliding part
242 keep as far as possible little gap, and to be advisable less than 0.1mm, or spring beam 241 can also be only lower surface before vibration
Contact is contacted all the time, and upper surface keeps as far as possible little gap with sliding part 242, to be advisable less than 0.1mm；Or before vibration
Spring beam 241 can also be that upper surface keeps as far as possible little gap with lower surface with sliding part 242, to be less than 0.1mm
Preferably, anyway finally to ensure that upper surface and/or lower surface be able to will contact with sliding part 242 when tuned mass damper vibrates.
The position of the sliding part 242 be adjustably mounted on the main supporting structure and can along the longitudinal sliding motion of the spring beam 241,
The securing member is used to that sliding part 242 to be fixed on into the main supporting structure after the sliding part 242 slides into setting position
On.Preferably, the base 26 includes pedestal 261, spring beam connecting seat 262 and damping unit lower connecting plate 263, the elasticity
Beam connecting seat 262 is arranged on the pedestal 261, and the damping unit lower connecting plate 263 is used to connect under damping unit 25
End.
The present embodiment determine rigidity resilient support 23 and adjustable rigidity resilient support 24 is fixedly connected in series
Between parenchyma gauge block 21 and base 26, the spring 231 for now determining rigidity resilient support 23 is pressed on the upper surface of spring beam 241.
Determine rigidity resilient support 23 to play a part of to balance the gravity of parenchyma gauge block 21 and a part of support stiffness is provided.As illustrated, sliding
The right-hand member of part 242 to the distance of the left end of spring beam connecting seat 262 is the effective length of adjustable rigidity resilient support 24, remembers its value
For L, then the vertical actually active rigidity of adjustable rigidity resilient support 24 is kb=3EI/L3.The position meaning of mobile sliding part 242
And change effective length L of adjustable rigidity resilient support 24, namely change the support stiffness of the actual contribution of spring beam 241, thus
Can the continuous resonant frequency of regulating system on a large scale, be allowed to accurately consistent with the structural vibration frequency of institute installation site, so as to reach
To optimal shock attenuation result.
Preferably, the guiding mechanism 22 includes slide block 222 and guide rod 221, and the slide block 222 is fixedly mounted on the master
On mass 21, the guide rod 221 is vertically arranged and its lower end is fixedly mounted on the base 26, the energy of the slide block 222
Along the longitudinal sliding motion of the guide rod 221, so that the parenchyma gauge block 21 is vertically moved.Preferably, parenchyma gauge block 21 is wrapped
Quality block main body 211, slide attachment plate 212 and damping unit upper junction plate 213 are included, the slide attachment plate 212 and damping are single
First upper junction plate 213 is fixedly mounted on the slide attachment plate 212, and the slide block 222 is fixedly mounted on the slide block and connects
On fishplate bar 212, the damping unit upper junction plate 213 is used to connect the upper end of the damping unit 25.
Preferably, described to determine rigidity resilient support 23 including spring 231, the spring 231 is installed on the guiding mechanism
On 22, its upper end is resisted against on the parenchyma gauge block 21, and its lower end is resisted against on the base 26；
Chute is provided with the base 26, the chute is in inverted T-shaped, and it includes the first larger chute of width and width
Less second chute, correspondingly, it is in inverted T-shaped that the sliding part 242 is overall, and it includes first for sliding in the first chute
Sliding part and the second sliding part that can be slided in the second chute；The securing member is locking nut 243, and it is threaded in institute
State on the second sliding part and the sliding part 242 can be locked on the parenchyma gauge block 21.
By the way of being coordinated using guide rail and sliding part, and securing member can also adopt wing bolt, slide
Chute is set on moving part, then wing bolt is connected on parenchyma gauge block through after chute, can also make sliding part move to suitable position
Postpone and lock sliding part using wing nut.
Preferably, the lowest vibration frequency configuration when tuned mass damper works is f1, maximum frequency of oscillation sets
It is set to f2, the quality settings of parenchyma gauge block 21 be m, determine rigidity resilient support 23 and adjustable rigidity flexibly support 24 quantity be respectively provided with
For n, the rigidity for determining rigidity resilient support 23 and adjustable rigidity resilient support 24 is matched in accordance with the following methods：
Determine rigidity k of single spring 231 in rigidity resilient support 23sIt is not less thanAnd single spring
231 rigidity ksMeet 1.5k2≤ks≤2k2；Highest rigidity k of single spring beam 241 in adjustable rigidity resilient support 24b2It is full
Sufficient kb2=1/ (1/k2-1/ks), minimum rigidity k of single spring beam 241 in adjustable rigidity resilient support 24b1Meet kb1=1/
(1/k1-1/ks), namely adjustable rigidity resilient support 24 in single spring beam 241 maximum effective length LmaxMeetMinimum effective length LminMeetWherein E and I are distributed as spring beam
241 Young's moduluss and cross sectional moment of inertia.
Preferably, the guiding mechanism 22 and/or determine the quantity of rigidity resilient support 23 for multiple, single spring 231 to
Under compressible stroke be no less than 15mm.
Preferably, the quantity of the adjustable rigidity resilient support 24 is flexibly supported 24 weeks for multiple and these adjustable rigidities
To being evenly arranged.
Preferably, the quantity of adjustable rigidity resilient support 24 is for four and these adjustable rigidities resilient support 24 are in pros
Shape is arranged.
Preferably, the damping unit 25 is piston type damping unit 25, viscoelastic material damping unit 25, magnetic current variable resistance
Buddhist nun's unit 25 or electromagnetic type damping unit 25, the total damping ratio of damping unit 25 is being not less than 0.05, not higher than 0.15.
In the present embodiment, determine rigidity resilient support 23 and adjustable rigidity resilient support 24 is connected in series
Between parenchyma gauge block 21 and base 26.Guiding mechanism 22, determine rigidity resilient support 23, adjustable rigidity resilient support 24 each four groups,
And it is along the circumferential direction symmetrical uniform；The number of damping unit 25 is one, is arranged in the center of tuned mass damper, its upper end
It is hinged with the damping unit upper junction plate 213 in parenchyma gauge block 21, the damping unit lower connecting plate 163 in its lower end and base 26
It is hinged.Guide rod 221 in guiding mechanism 22 is fixedly connected on the pedestal 261 in base 26, and slide block 222 is fixedly connected on parenchyma
On slide attachment plate 212 in gauge block 21.The concrete structure of rigidity resilient support 23 is determined from the relatively large spring of rigidity
231, the relatively large spring beam 241 of rigidity is selected in the concrete structure of adjustable rigidity resilient support 24.To save space and dress
Tear open conveniently, inside the spring 231 that each group of guiding mechanism 22 is placed in determining rigidity resilient support 23.Adjustable rigidity resilient support 24
In one end of spring beam 241 be fixedly connected on base plate 26, the other end is through sliding part 242 and can be relative to sliding part 242
Along longitudinal direction slidably.Sliding part 242 can be in the chute in base 26 along the parallel longitudinal direction freedom with spring beam 241
Slide, sliding part 242 is fixed on base plate 26 by locking nut 243.Spring beam connecting seat 262, damping in base 26 is single
First lower connecting plate 263 is fixedly connected with pedestal 261.
In the present embodiment, the method for regulating system resonant frequency is as follows：If reducing the resonant frequency of system, unclamp
Locking nut 243, mobile sliding part 242 makes one end that it is fixedly connected near spring beam 241 with base 26, then tightens locking screw
Female 243, then the actual support rigidity reduction of adjustable rigidity resilient support 24, system resonance frequencies are reduced；If improving system
Resonant frequency, then only need to by sliding part 242 to the one end being fixedly connected with base 26 away from spring beam 241 move suitably away from
From.In order to reach preferable frequency modulation effect, each adjustable rigidity resilient support 24 is entered in the same manner with amplitude
Row is adjusted.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, not to
The present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc. are limited, all should be included
Within protection scope of the present invention.
Claims (10)
1. a kind of frequency can continually varying tuned mass damper, including parenchyma gauge block, guiding mechanism, determine rigidity elasticity
Support, damping unit and base, the parenchyma gauge block and base collectively form main supporting structure, the guiding mechanism, determine rigidity bullet
Property support, damping unit is separately mounted on the main supporting structure, it is characterised in that
Also include the adjustable rigidity resilient support being located between the parenchyma gauge block and the base, the adjustable rigidity elasticity
Support includes spring beam, sliding part and securing member, wherein, the right-hand member of the spring beam is fixedly mounted on the base, its left end
Through the sliding part and its upper surface and/or lower surface can connect when tuned mass damper vibrates with the sliding part
Touch, the slide positions are adjustably mounted on the main supporting structure and can be along the longitudinal sliding motion of the spring beam, institute
Securing member is stated for sliding part to be fixed on into the main supporting structure after the sliding part slides into setting position.
2. a kind of frequency according to claim 1 can continually varying tuned mass damper, it is characterised in that described to lead
Include slide block and guide rod to mechanism, the slide block is fixedly mounted on the parenchyma gauge block, and the guide rod is vertically arranged and it
Lower end is fixedly mounted on the base, and the slide block can be along the longitudinal sliding motion of the guide rod, so that the parenchyma gauge block is along perpendicular
Nogata is to movement.
3. a kind of frequency according to claim 2 can continually varying tuned mass damper, it is characterised in that described fixed
Rigidity resilient support includes spring, and the spring is installed on the guiding mechanism, and its upper end is resisted against on the parenchyma gauge block,
Its lower end is resisted against on the base；
Chute is provided with the parenchyma gauge block, the chute is T-shaped, it includes that the first larger chute of width and width are less
The second chute, correspondingly, the sliding part is integrally T-shaped, it include the first sliding part that can slide in the first chute and
The second sliding part that can be slided in the second chute；The securing member is locking nut, and it is threaded in described second and slides
In portion and the sliding part can be locked on the parenchyma gauge block.
4. a kind of frequency according to claim 3 can continually varying tuned mass damper, it is characterised in that the tune
Lowest vibration frequency configuration when humorous mass damper works is f1, maximum frequency of oscillation be set to f2, parenchyma gauge block quality settings
For m, determine rigidity resilient support and adjustable rigidity resilient support quantity be disposed as n, in accordance with the following methods matching determine rigidity bullet
Property support and adjustable rigidity resilient support rigidity：
Determine rigidity k of single spring in rigidity resilient supportsLess than k1=4 π2mf1 2/ n, and rigidity k of single springsMeet
0.6k1≤ks≤0.8k1；Minimum rigidity k of single spring beam in adjustable rigidity resilient supportb1Meet kb1=k1-ks, highest it is firm
Degree kb2MeetNamely in adjustable rigidity resilient support single spring beam maximum effectively
Length LmaxMeetMinimum effective length LminMeetWherein E and I point
Cloth is the Young's moduluss and cross sectional moment of inertia of spring beam.
5. a kind of frequency according to claim 2 can continually varying tuned mass damper, it is characterised in that described fixed
Rigidity resilient support includes spring, and the spring is installed on the guiding mechanism, and its upper end is resisted against on the parenchyma gauge block,
Its lower end is resisted against on the upper surface of the base left end；
Chute is provided with the base, the chute is in inverted T-shaped, and it includes that the first larger chute of width and width are less
Second chute, correspondingly, the sliding part is in integrally inverted T-shaped, it include the first sliding part that can slide in the first chute with
The second sliding part that can be slided in the second chute；The securing member is locking nut, and it is threaded in described second and slides
In portion and the sliding part can be locked on the parenchyma gauge block.
6. a kind of frequency according to claim 5 can continually varying tuned mass damper, it is characterised in that the tune
Lowest vibration frequency configuration when humorous mass damper works is f1, maximum frequency of oscillation be set to f2, parenchyma gauge block quality settings
For m, determine rigidity resilient support and adjustable rigidity resilient support quantity be disposed as n, in accordance with the following methods matching determine rigidity bullet
Property support and adjustable rigidity resilient support rigidity：
Determine rigidity k of single spring in rigidity resilient supportsIt is not less thanAnd rigidity k of single springsMeet
1.5k2≤ks≤2k2；Highest rigidity k of single spring beam in adjustable rigidity resilient supportb2Meet kb2=1/ (1/k2-1/ks),
Minimum rigidity k of single spring beam in adjustable rigidity resilient supportb1Meet kb1=1/ (1/k1-1/ks), namely adjustable rigidity bullet
Property support in single spring beam maximum effective length LmaxMeetMinimum effective length LminMeetWherein E and I are distributed as the Young's moduluss and cross sectional moment of inertia of spring beam.
7. a kind of frequency according to claim 3 can continually varying tuned mass damper, it is characterised in that the bullet
The downward compressible stroke of spring is no less than 15mm.
8. a kind of frequency according to claim 1 can continually varying tuned mass damper, it is characterised in that it is described can
The quantity for adjusting rigidity resilient support is arranged circumferentially for multiple and these adjustable rigidity resilient support.
9. a kind of frequency according to claim 1 can continually varying tuned mass damper, it is characterised in that it is adjustable just
The quantity of degree resilient support is four and these square arrangements of adjustable rigidities resilient support.
10. a kind of frequency according to claim 1 can continually varying tuned mass damper, it is characterised in that described
Damping unit is piston type damping unit, viscoelastic material damping unit, magnetorheological damping unit or electromagnetic type damping unit, is hindered
The total damping ratio of Buddhist nun's unit is to be not less than 0.05, not higher than 0.15.
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| CN201510627901.8A CN105133744B (en) | 2015-09-28 | 2015-09-28 | Tuned mass damper structure with continuously variable frequency |
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| CN201510627901.8A CN105133744B (en) | 2015-09-28 | 2015-09-28 | Tuned mass damper structure with continuously variable frequency |
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| CN105133744B true CN105133744B (en) | 2017-04-19 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105471124B (en) * | 2015-12-18 | 2018-08-24 | 北京金风科创风电设备有限公司 | Shock-absorbing means, motor stator and the motor of motor stator |
| CN106013492B (en) * | 2016-06-28 | 2018-04-20 | 南京工业大学 | Building shockproof system and induction control method thereof |
| CN106193794B (en) * | 2016-07-27 | 2018-04-06 | 温州大学瓯江学院 | A kind of antidetonation faced wall with Multiple Protective Structure |
| CN106988592B (en) * | 2017-04-06 | 2019-02-01 | 东南大学 | A kind of swing-type tuned mass damper device |
| TWI661138B (en) | 2017-11-10 | 2019-06-01 | 財團法人工業技術研究院 | Adjustable damper and controlling method thereof |
| CN108861981B (en) * | 2018-09-13 | 2024-07-26 | 杭州西奥电梯有限公司 | Vibration reduction elevator car |
| CN114876995B (en) * | 2022-02-08 | 2023-04-07 | 上海交通大学 | Multidimensional self-adaptive vibration and noise control device |
| CN118166931B (en) * | 2024-04-16 | 2024-09-10 | 上海史狄尔建筑减震科技有限公司 | Frequency modulation mass damper with wide frequency domain stepless frequency conversion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101021089A (en) * | 2006-11-23 | 2007-08-22 | 大连理工大学 | Zoned arrangement horizontal bidirectional multi-tuning damper |
| CN100552155C (en) * | 2007-01-05 | 2009-10-21 | 北京工业大学 | Speed regulation type tuning mass damper |
| CN101012859A (en) * | 2007-02-09 | 2007-08-08 | 东南大学 | Multi-modality broad-frequency tuning quality damper |
| CN205035929U (en) * | 2015-09-28 | 2016-02-17 | 武汉斯坦迪减振技术有限公司 | But frequency continuous variation's harmonious mass damper structure |
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