CN114635942A - Self-adaptive damping device for structural vibration reduction - Google Patents
Self-adaptive damping device for structural vibration reduction Download PDFInfo
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- CN114635942A CN114635942A CN202210278278.XA CN202210278278A CN114635942A CN 114635942 A CN114635942 A CN 114635942A CN 202210278278 A CN202210278278 A CN 202210278278A CN 114635942 A CN114635942 A CN 114635942A
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- 238000013016 damping Methods 0.000 title claims abstract description 302
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/066—Variable stiffness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/0047—Measuring, indicating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/08—Sensor arrangement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2232/00—Nature of movement
- F16F2232/08—Linear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
- F16F2238/026—Springs wound- or coil-like
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Abstract
The invention discloses a self-adaptive damping device for structural vibration reduction, which is characterized in that a bottom plate is fixedly arranged in a damper shell, a plurality of damping unit mounting holes are arrayed on the mounting bottom plate, a damping unit is mounted in each damping unit mounting hole, a damping spring is mounted at the bottom in each damping unit mounting hole, the upper end of each damping spring is in contact with the bottom of each damping unit, and the heights of the damping units in the plurality of damping unit mounting holes are different; the damping units with different heights are used, the damping unit with the highest height is used as the unit which is firstly contacted, the highest damping unit is extruded according to the change of external load, the highest damping unit is extruded to intervene in damping, when the external load is greater than the maximum damping force of the highest damping unit, the damping unit with the next height gradient is intervened than the highest damping unit, and the rest is done in sequence, so that the purposes of changing rigidity and damping are achieved, the structure is simple, the requirement of large-range load damping is met, the damping device is suitable for damping of an industrial structure with a complex working environment, and a good damping effect is achieved.
Description
Technical Field
The invention belongs to the field of self-adaptive dampers, relates to a self-adaptive damper capable of changing an intervening region of a unit damping block according to different deformation or speed difference of a controlled object under different working environments, and particularly relates to a self-adaptive damping device for structural vibration reduction.
Background
With the development of industrial production, the safety problem is more and more emphasized by the countries and enterprises. The vibration of the engineering structure is one of the main reasons causing the safety problem, if the engineering structure is under strong vibration for a long time and is subjected to millions or even hundreds of millions of reciprocating motions, the structure can be damaged due to fatigue; the vibration of the structure can affect the normal work and the health of production personnel; vibrations of the engineered structure can sometimes have deleterious effects on precision equipment and instruments and precision processes. And damping with a damper is the most widely used and effective damping method. However, different types of dampers have different problems, and in order to solve the problems, students at home and abroad continuously strive to perfect the existing dampers and develop novel dampers for decades so as to improve the vibration resistance of damper systems. The following are common dampers:
1. high damping rubber damper. It utilizes high damping rubber shearing energy consumption to suppress vibration. The damper is simple in structure, easy to install, low in cost, small in influence on appearance and small in later-period maintenance difficulty. But the adjustability is poor, and the method is suitable for controlling the medium-amplitude vibration.
2. An oil damper. The damping device utilizes damping generated by an oily material through a piston hole to consume vibration energy to suppress vibration. The damper is mature in theoretical research and good in vibration reduction effect, and can be applied to control large-amplitude vibration. But the requirement on machining precision is high, the damping adjustment is difficult, the oil leakage problem is serious, and the maintenance cost is high and the difficulty is high.
3. A magnetorheological damper. It damps vibrations by changing the magnetic field to obtain damping. Its advantage is high control effect. But the machining precision is high, and the oil leakage problem exists.
4. A friction damper. It relies on frictional dissipation of energy between damping materials to dampen vibrations. Its advantage is high energy consumption efficiency. But the vibration induced displacement must be greater than the displacement threshold.
5. A viscous shear damper. It relies on the shear deformation of a high viscosity fluid to dissipate vibrational energy to dampen vibration. The advantages are easy installation and adjustment, and good vibration damping effect on large-amplitude vibration; but is sensitive to the environment temperature and the vibration frequency, and the requirement on later maintenance is high.
Disclosure of Invention
The invention aims to provide an adaptive damping device for structural vibration reduction, which overcomes the defects of the prior art.
The utility model provides a self-adaptation damping device for structural vibration damping, includes the attenuator end cover, attenuator casing and damping unit, is fixed with mounting plate in the attenuator casing, and the array has a plurality of damping unit mounting holes on the mounting plate, damping unit of installation in every damping unit mounting hole, and damping spring is installed to the bottom in the damping unit mounting hole, and damping spring's upper end and damping unit's bottom contact, the damping unit height difference in a plurality of damping unit mounting holes.
Further, the damping unit includes damping unit cylinder body and damping unit end cover, be the cavity structure in the damping unit cylinder body, the damping unit end cover sets up in damping unit cylinder body upper end, be provided with the damping unit piston in the damping unit cylinder body, the damping unit piston passes the damping unit end cover, the upper end and the contact of attenuator end cover of damping unit piston are equipped with the damping hole on the damping unit piston, be equipped with damping liquid in the cavity structure of damping unit cylinder body.
Furthermore, a through hole is formed in the damping unit end cover, the upper end of the damping unit piston penetrates through the through hole of the damping unit end cover, and a sealing ring is arranged between the damping unit piston and the inner wall of the damping unit end cover.
Furthermore, a guide shaft sleeve for guiding and supporting the damping unit piston is arranged at the upper end of the through hole of the damping unit end cover.
Furthermore, a control unit is arranged at the bottom in the damper shell and connected to a pressure sensor, and the pressure sensor is arranged at the bottom in the damping unit mounting hole.
Further, the unit mounting holes in the damper shell are in a circular array or a matrix array.
Furthermore, unit mounting holes in the damper shell are in a circular array, and the heights of the damping units are sequentially reduced from the outer ring to the inner ring.
Furthermore, the damping fluid in the cavity structure of the damping unit cylinder body is made of a shear thickening fluid material.
Further, the control unit is connected with an early warning unit.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a self-adaptive damping device for structural vibration reduction, which adopts a damper end cover, a damper shell and damping units, wherein a mounting bottom plate is fixed in the damper shell, a plurality of damping unit mounting holes are arrayed on the mounting bottom plate, one damping unit is mounted in each damping unit mounting hole, a damping spring is mounted at the bottom in each damping unit mounting hole, the upper end of each damping spring is in contact with the bottom of each damping unit, and the heights of the damping units in the plurality of damping unit mounting holes are different; the damping units with different heights are used, the damping unit with the highest height is used as the unit which is firstly contacted, the highest damping unit is extruded according to the change of external load, the highest damping unit is extruded to intervene in damping, when the external load is greater than the maximum damping force of the highest damping unit, the damping unit with the next height gradient higher than the highest damping unit intervenes, and the analogy is carried out in sequence, so that the purposes of changing rigidity and damping are achieved, the structure is simple, the requirement of large-range load damping is met, the damping device is suitable for damping of an industrial structure with a complex working environment, and a good damping effect is achieved.
Furthermore, the damping unit comprises a damping unit cylinder body and a damping unit end cover, and the damping unit is simple in structure and convenient to mount.
Furthermore, a guide shaft sleeve used for guiding and supporting the damping unit piston is arranged at the upper end of the through hole of the damping unit end cover, so that the transmission stability is improved.
Further, the bottom is equipped with the control unit in the attenuator casing, and the control unit is connected in pressure sensor, and pressure sensor sets up in the downthehole bottom of damping unit mounting, realizes the operating mode monitoring, can make things convenient for the maintenance of self-adaptation attenuator, also can avoid the emergence of major incident.
Furthermore, unit mounting holes in the damper shell are in a circular array or a matrix array, and the damping units mounted in the array are stable in structure.
Drawings
Fig. 1 is a structural diagram of an adaptive damper according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a damper array according to an embodiment of the present invention, i.e., a sectional view taken along line a-a of fig. 1.
Fig. 3 is a schematic structural diagram of a damping unit according to an embodiment of the present invention.
Fig. 4 is a schematic view of a return spring mounting structure according to an embodiment of the present invention.
Wherein: 1 is a damper end cover; 2 is a damping unit; 3 is a mounting bottom plate; 4, a damping unit mounting hole; 5 is damper shell; 6 is a control unit; 7 is a damping unit piston; 8 is a guide shaft sleeve; 9 is a sealing ring; 10 is damping fluid; 11 is a damping unit cylinder body; 12 is a damping unit end cover; 13 is a damping spring; 14 is a damping hole; and 15, a return spring.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, the invention discloses a self-adaptive damping device for structural vibration reduction, which comprises a damper end cover 1, a damper shell 5 and damping units 2, wherein a mounting bottom plate 3 is fixed in the damper shell 5, a plurality of damping unit mounting holes 4 are arrayed on the mounting bottom plate 3, one damping unit 2 is mounted in each damping unit mounting hole 4, a damping spring 13 is mounted at the bottom in each damping unit mounting hole 4, the upper end of each damping spring 13 is contacted with the bottom of each damping unit 2, and the heights of the damping units 2 in the plurality of damping unit mounting holes 4 are different; the bottom of the damper end cover 1 is contacted with the upper end of the highest damping unit 2; adopt not high damping unit 2, utilize the highest damping unit of height as the unit of first contact, according to the change of external load, highest damping unit 2 is extruded, intervene in the damping, when external load is greater than the maximum damping force of highest damping unit, intervene than the damping unit of the next altitude gradient of highest damping unit, analogize in proper order, thereby realize changing the purpose of rigidity and damping, moreover, the steam generator is simple in structure, satisfy the damped demand of load on a large scale, be fit for being used for the damping of the complicated industrial structure of operational environment, reach good cushioning effect.
Specifically, damping spring 13 in damping unit mounting hole 4 is used for the protection of damping unit 2 and the intervention of different damping units, and when outside load increases suddenly, when being greater than the damping force of same high damping unit, all damping spring 13 of this height are compressed, and the damping unit of second gradient height intervenes, and a plurality of damping units intervene simultaneously this moment to increased damping unit's output power amplitude, avoided too big load rigid contact to cause the damage to the damping unit of a small amount of contacts, can be used to the occasion of load sudden change.
As shown in figure 3 of the drawings, as shown in fig. 4, the damping unit 2 includes a damping unit cylinder 11 and a damping unit end cover 12, a cavity structure is formed in the damping unit cylinder 11, the damping unit end cover 12 is disposed at the upper end of the damping unit cylinder 11, the damping unit end cover 12 is in threaded connection with the damping unit cylinder 11, a damping unit piston 7 is disposed in the damping unit cylinder 11, the damping unit piston 7 penetrates through the damping unit end cover 12, the upper end of the damping unit piston 7 is in contact with the damper end cover 1, a damping hole 14 is formed in the damping unit piston 7, a damping liquid 10 is disposed in the cavity structure of the damping unit cylinder 11, the damping liquid 10 can penetrate through the damping hole 14 to achieve damping motion of the damping unit piston 7, a return spring 15 is disposed at the lower end of the damping unit piston 7, and after a load applied to the upper end of the damping unit piston 7 disappears, the damping unit piston 7 gradually returns under the action of the return spring 15.
Referring to fig. 1, a damper end cover 1 is in contact with the upper end of a damping unit 2, the damping unit 2 is mounted on a damping unit mounting hole 4 of a mounting base plate 3, and the inner wall of the damping unit mounting hole 4 of the mounting base plate 3 is in contact with the outer wall of a damping unit cylinder 11 of the damping unit 2;
the bottom is equipped with the control unit 6 in attenuator casing 5, and the control unit 6 is connected in pressure sensor, and pressure sensor sets up the bottom in damping unit mounting hole 4 for gather 2 atress sizes of every damping unit, gather through control unit 6 and assemble the back and transmit to external control platform, so that the staff looks over, ensures the steady safety of whole damping unit operation.
Referring to fig. 2, the damping units 2 are arranged in an array form in a circular array or a matrix array according to the set positions of the damping unit mounting holes 4, different numbers or areas of unit damping blocks intervene according to different deformations or speed differences of a controlled object, and the intervening damping units are adjusted through the damping springs 13 on the mounting base plate, so that the purposes of changing the rigidity and damping are achieved.
As shown in fig. 1 and 2, the circular array damping units are adopted, the heights of the damping units are sequentially reduced from the outer ring to the inner ring, the mounting height of the damping unit at the outermost end is highest, the mounting height of the damping unit at the innermost end is lowest, the compression deformation amount of the damping spring 13 at the lower end of the damping unit with the highest mounting height is largest, the highest damping unit can be compressed and reduced to be damped together with the lowest damping unit, and the whole damping device receives the maximum bearing load at the moment; the damper is simple in structure, each damping unit 2 is a damping force output structure, and stable damping output is formed at the lower end of the damper end cover 1; the array structures of the damping units are set into different array structures to adapt to different installation working environments, different damping materials can be added into different array units according to requirements, and the damping unit structures with different heights are adopted, so that the whole damping device can provide step damping force and is suitable for the construction environment with large load variation.
The basic working principle of the system is as follows: the number of the damping units is changed through the array structure of the damper according to the change of the external load, the working state of the damper is monitored through the pressure sensor, the control unit 6 is connected with the early warning unit, when the pressure received by the damping unit is larger than a set threshold value, an alarm is given in time when the state is abnormal, and the damper is better suitable for different working environments and external loads.
Referring to fig. 3, a through hole is formed in the damping unit end cover 12, the upper end of the damping unit piston 7 is inserted into the through hole of the damping unit end cover 12, and a sealing ring 9 is arranged between the damping unit piston 7 and the inner wall of the damping unit end cover 12; the upper end of the through hole of the damping unit end cover 12 is provided with a guide shaft sleeve 8 for guiding and supporting the damping unit piston 7, so that the motion stability of the damping unit piston 7 is improved. The damping fluid 10 in the cavity structure of the damping unit cylinder 11 is made of a shear thickening fluid material.
The damping Fluid 10 is a STFSheel Thick Fluid, which is a non-Newtonian Fluid, and the most important characteristic of STF materials is that the viscosity increases rapidly as the shear rate increases and exceeds a certain value. The self-adaptive damper can provide larger damping force on the self-adaptive basis to ensure good energy consumption characteristics. The shear thickening liquid material is applied as the damping liquid of the damper, and the increment of the output damping force amplitude of the self-adaptive damper before and after the shear thickening stage can be increased by several orders of magnitude compared with the output force amplitude of the conventional damper.
The damping unit cylinder 11 is filled with a shear thickening liquid material, and after an external load is applied, the damping unit piston 7 starts to move from one end of the damping unit cylinder 11 to the other end; during the movement of the damping unit piston 7, the shear thickening fluid material penetrates through the damping hole 14 on the damping unit piston 7 and moves towards the inner top end of the damping unit cylinder 11, and during the process, the residual shear thickening fluid material at the bottom of the cylinder is continuously extruded, so that the output damping force is provided for the damping unit.
When the external load is reduced, the damping unit piston 7 is lifted under the action of the return spring 15, and the shear thickening liquid material at the top end part of the damping unit cylinder 11 flows to the bottom of the piston again through the damping hole 14 on the damping unit piston 7, so that the damping unit is restored to the original shape.
The properties of a shear thickening fluid material are related to the shear rate to which it is subjected, i.e. to the rate at which an external load is applied. Therefore, when the self-adaptive damper is subjected to different loads, the damper can self-adaptively adjust the characteristics of the internal material according to the external load, change the intervening damping unit and provide proper damping force to meet the real-time vibration reduction requirement on the structure.
In summary, according to the adaptive damper for structural vibration reduction disclosed by the invention, the vibration absorption material of the damper is made into a damping unit, according to different deformations or speed differences of the controlled object and different external loads, the damper can enable unit damping blocks in different numbers or areas to intervene according to the self structural characteristics, and meanwhile, the intervening damping units can be adaptively adjusted through the control switch on the mounting base plate, so that the damper can be adaptively changed under different working environments and different deformations of the controlled object, the rigidity and the damping of the structure are changed, and the purpose of good vibration reduction under different complex working conditions is achieved. Meanwhile, the adaptive damper is provided with a relevant sensor, once the working state is abnormal, the measured data exceeds a set alarm threshold value, an alarm is automatically given out, the working condition monitoring is realized, the maintenance of the adaptive damper can be facilitated, and major safety accidents can be avoided.
The invention adopts a passive control mode, and can self-adaptively adjust itself according to the deformation condition of the controlled body so as to adapt to different working environments; the damper adopts shear thickening liquid as damping liquid, so that the output force amplitude of the damper is increased; the system is based on the shear thickening liquid and the control module, is very suitable for vibration reduction of industrial structures with complex working environments, avoids energy supply difficulty, and can be self-adaptively adjusted according to the deformation condition of a controlled body so as to adapt to different working environments. In the aspect of damper materials, viscoelastic materials are selected as the materials of the damping block units, so that the damper is easy to install and adjust and has a good vibration damping effect on large-amplitude vibration. Meanwhile, the damper can be adjusted in a self-adaptive mode to change damping according to needs through a control module on the self-adaptive damper, and a corresponding sensor is arranged to give an alarm in time when the working state is abnormal, so that the problems of high later maintenance requirement and inconvenience in overhaul of the viscous damper are solved, and major safety accidents can be avoided.
When a smaller load acts on the industrial structure, the self-adaptive damper provides a smaller damping force, and the requirement of vibration control in structural design is met; when the load is large or sudden load is applied to the industrial structure due to unstable factors such as hurricane weather, the adaptive damper can provide damping force with corresponding level in a short time to ensure normal working state, so that the defect that the traditional damper is poor in adaptability is overcome.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a self-adaptation damping device for structural vibration damping, a serial communication port, including attenuator end cover (1), attenuator casing (5) and damping unit (2), attenuator casing (5) internal fixation has mounting plate (3), the array has a plurality of damping unit mounting holes (4) on mounting plate (3), damping unit (2) of installation in every damping unit mounting hole (4), damping spring (13) are installed to the bottom in damping unit mounting hole (4), the upper end of damping spring (13) and the bottom contact of damping unit (2), damping unit (2) in a plurality of damping unit mounting holes (4) are highly different.
2. The self-adaptive damping device for structural vibration reduction according to claim 1, wherein the damping unit (2) comprises a damping unit cylinder body (11) and a damping unit end cover (12), the damping unit cylinder body (11) is internally provided with a cavity structure, the damping unit end cover (12) is arranged at the upper end of the damping unit cylinder body (11), the damping unit cylinder body (11) is internally provided with a damping unit piston (7), the damping unit piston (7) penetrates through the damping unit end cover (12), the upper end of the damping unit piston (7) is in contact with the damper end cover (1), the damping unit piston (7) is provided with a damping hole (14), and the cavity structure of the damping unit cylinder body (11) is internally provided with damping liquid (10).
3. The self-adaptive damping device for structural vibration reduction according to claim 2, characterized in that a through hole is arranged on the damping unit end cover (12), the upper end of the damping unit piston (7) is arranged in the through hole of the damping unit end cover (12) in a penetrating manner, and a sealing ring (9) is arranged between the damping unit piston (7) and the inner wall of the damping unit end cover (12).
4. An adaptive damping device for structural vibration damping according to claim 2, characterized in that the upper end of the through hole of the damping unit end cap (12) is provided with a guide bush (8) for guiding and supporting the damping unit piston (7).
5. An adaptive damping device for structural vibration damping according to claim 1, characterized in that the bottom in the damper housing (5) is provided with a control unit (6), the control unit (6) is connected to a pressure sensor, and the pressure sensor is arranged at the bottom in the damping unit mounting hole (4).
6. An adaptive damping device for structural vibration damping according to claim 1, characterized in that the unit mounting holes (4) in the damper housing (5) are in a circular array or in a matrix array.
7. An adaptive damping device for structural vibration damping according to claim 6, characterized in that the unit mounting holes (4) in the damper housing (5) are in a circular array, and the damping unit heights are sequentially reduced from outer ring to inner ring.
8. An adaptive damping device for structural vibration damping according to claim 1, characterized in that the damping fluid (10) in the cavity structure of the damping unit cylinder (11) is a shear thickening fluid material.
9. An adaptive damping device for structural vibration damping according to claim 5, characterized in that the control unit (6) is connected with an early warning unit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115709295A (en) * | 2022-12-08 | 2023-02-24 | 哈尔滨理工大学 | Self-adaptive vibration-damping boring bar filled with shear thickening fluid |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661354A (en) * | 2012-05-28 | 2012-09-12 | 成业兴 | Vibration damper using damping spring to double as damping component |
| KR20140001880U (en) * | 2012-09-24 | 2014-04-02 | 한국방진방음 주식회사 | The vibration-proofing pad |
| CN104632986A (en) * | 2014-12-22 | 2015-05-20 | 西安交通大学 | Coupled electromagnetic field particle damper with ferromagnetic end cover additionally arranged at one end and vibration reduction method of particle damper for vibration structure |
| CN105156558A (en) * | 2015-07-18 | 2015-12-16 | 常州大学 | Self-adaptive magneto-rheological damper with single-rod variable cylinder body |
| CN106763475A (en) * | 2015-11-24 | 2017-05-31 | 成都奇航***集成有限公司 | Array element type vibration isolator |
| CN107676426A (en) * | 2017-11-01 | 2018-02-09 | 重庆邮电大学 | A kind of classification vibration absorber based on marmem complex spring |
| CN207714588U (en) * | 2017-09-07 | 2018-08-10 | 东莞英达士声学设备有限公司 | Wide load bilayer floating build floor sound insulation vibration-proof structure |
| CN109098046A (en) * | 2018-08-27 | 2018-12-28 | 隔而固(青岛)振动控制有限公司 | Nonlinear combination formula spring vibration-isolator |
| CN109356963A (en) * | 2017-11-07 | 2019-02-19 | 北京航空航天大学 | What a kind of electromagnet was coupled with SMA plate variable actively adjusts more cell element dampers |
| CN208749900U (en) * | 2018-08-10 | 2019-04-16 | 深圳市善时仪器有限公司 | A kind of split type Electronic Speculum installation damping |
| CN109780116A (en) * | 2019-03-19 | 2019-05-21 | 郑州科技学院 | Damping and intelligent mobile vehicle |
| CN111706636A (en) * | 2020-07-03 | 2020-09-25 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Self-adaptive vibration damping base suitable for high-frequency vibration environment |
| CN111810567A (en) * | 2020-06-24 | 2020-10-23 | 北京工业大学 | Variable-damping and mass and rigidity adjustable shock absorber and rigidity quantitative adjusting method |
| CN112503135A (en) * | 2020-11-11 | 2021-03-16 | 北京航空航天大学 | Variable working condition self-adaptive vibration isolator for spacecraft inertia actuating mechanism |
| CN212775354U (en) * | 2020-06-20 | 2021-03-23 | 扬州华通橡塑有限公司 | Rubber shock absorber for rail vehicle with good elastic effect |
| CN113027974A (en) * | 2021-02-26 | 2021-06-25 | 上海理工大学 | Multi-mode magneto-rheological shear thickening liquid damper |
-
2022
- 2022-03-21 CN CN202210278278.XA patent/CN114635942A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661354A (en) * | 2012-05-28 | 2012-09-12 | 成业兴 | Vibration damper using damping spring to double as damping component |
| KR20140001880U (en) * | 2012-09-24 | 2014-04-02 | 한국방진방음 주식회사 | The vibration-proofing pad |
| CN104632986A (en) * | 2014-12-22 | 2015-05-20 | 西安交通大学 | Coupled electromagnetic field particle damper with ferromagnetic end cover additionally arranged at one end and vibration reduction method of particle damper for vibration structure |
| CN105156558A (en) * | 2015-07-18 | 2015-12-16 | 常州大学 | Self-adaptive magneto-rheological damper with single-rod variable cylinder body |
| CN106763475A (en) * | 2015-11-24 | 2017-05-31 | 成都奇航***集成有限公司 | Array element type vibration isolator |
| CN207714588U (en) * | 2017-09-07 | 2018-08-10 | 东莞英达士声学设备有限公司 | Wide load bilayer floating build floor sound insulation vibration-proof structure |
| CN107676426A (en) * | 2017-11-01 | 2018-02-09 | 重庆邮电大学 | A kind of classification vibration absorber based on marmem complex spring |
| CN109356963A (en) * | 2017-11-07 | 2019-02-19 | 北京航空航天大学 | What a kind of electromagnet was coupled with SMA plate variable actively adjusts more cell element dampers |
| CN208749900U (en) * | 2018-08-10 | 2019-04-16 | 深圳市善时仪器有限公司 | A kind of split type Electronic Speculum installation damping |
| CN109098046A (en) * | 2018-08-27 | 2018-12-28 | 隔而固(青岛)振动控制有限公司 | Nonlinear combination formula spring vibration-isolator |
| CN109780116A (en) * | 2019-03-19 | 2019-05-21 | 郑州科技学院 | Damping and intelligent mobile vehicle |
| CN212775354U (en) * | 2020-06-20 | 2021-03-23 | 扬州华通橡塑有限公司 | Rubber shock absorber for rail vehicle with good elastic effect |
| CN111810567A (en) * | 2020-06-24 | 2020-10-23 | 北京工业大学 | Variable-damping and mass and rigidity adjustable shock absorber and rigidity quantitative adjusting method |
| CN111706636A (en) * | 2020-07-03 | 2020-09-25 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Self-adaptive vibration damping base suitable for high-frequency vibration environment |
| CN112503135A (en) * | 2020-11-11 | 2021-03-16 | 北京航空航天大学 | Variable working condition self-adaptive vibration isolator for spacecraft inertia actuating mechanism |
| CN113027974A (en) * | 2021-02-26 | 2021-06-25 | 上海理工大学 | Multi-mode magneto-rheological shear thickening liquid damper |
Non-Patent Citations (2)
| Title |
|---|
| 彭海波等: "一种含负刚度元件的新型动力吸振器的参数优化", 《力学学报》 * |
| 王飞: "《结构振动的主动控制》", 31 July 2016 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115709295A (en) * | 2022-12-08 | 2023-02-24 | 哈尔滨理工大学 | Self-adaptive vibration-damping boring bar filled with shear thickening fluid |
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