CN219451130U - Stepless frequency modulation vibration absorber - Google Patents
Stepless frequency modulation vibration absorber Download PDFInfo
- Publication number
- CN219451130U CN219451130U CN202223205893.2U CN202223205893U CN219451130U CN 219451130 U CN219451130 U CN 219451130U CN 202223205893 U CN202223205893 U CN 202223205893U CN 219451130 U CN219451130 U CN 219451130U
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- end seat
- frequency modulation
- base
- stepless frequency
- screw rod
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- 239000006096 absorbing agent Substances 0.000 title claims description 14
- 238000013016 damping Methods 0.000 claims abstract description 17
- 230000035939 shock Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 8
- 230000005284 excitation Effects 0.000 description 7
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to the technical field of vibration control, in particular to a stepless frequency modulation vibration absorbing device, which comprises a mass block, a base, a screw rod penetrating through the middle of the mass block and connected with the mass block through threads, wherein the two ends of the screw rod are respectively connected with a first end seat and a second end seat, the first end seat is connected with the base through a hinged support, the second end seat is connected with the base through an elastic piece, a damping piece is arranged on one side of the elastic piece, which is close to the hinged support, and the damping piece moves to different positions along the screw rod through the mass block.
Description
Technical Field
The utility model relates to the technical field of vibration control, in particular to a stepless frequency modulation vibration absorbing device.
Background
The structure is susceptible to external excitation including wind vibration, earthquake, mechanical equipment, subway, vehicle and other vibration, and currently a Tuned Mass Damper (TMD) is generally adopted to deal with the problems, and the control principle is that when the natural frequency of the structure is adjusted to be the same as the excitation vibration of a controlled structure, a better vibration reduction effect can be generated.
But the tuning mass damper of the current part has the advantages of narrow controllable frequency band, small frequency adjustment range, low applicability to only structures with lower vibration frequency, no applicability to structures with higher vibration frequency, larger limitation and small application range. And part of tuning mass dampers are used for adjusting the vibration frequency in a stepped manner, have large adjustment span and low precision, and cannot be accurately matched with excitation vibration.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the vibration absorbing device which has wide adjusting range, is suitable for excitation vibration of different frequencies, can realize stepless frequency modulation, has high precision and can be accurately matched with the excitation vibration.
The technical scheme adopted by the utility model is as follows:
the utility model provides a stepless frequency modulation's vibration absorber, includes quality piece and base, still including running through in the quality piece middle part and pass through threaded connection's lead screw with the quality piece, the one end of lead screw is connected with first end seat, and the other end is connected with the second end seat, and first end seat passes through the hinge support to be connected with the base, and the second end seat passes through the elastic component to be connected with the base, and one side that is close to the hinge support of elastic component is equipped with the damping piece, and the one end and the base of damping piece are connected, the other end and second end seat butt.
Preferably, the first end seat and the second end seat are both connected with the screw rod through a thrust bearing, and the screw rod penetrates through the second end seat.
Preferably, the screw rod comprises a threaded portion and a rotating portion connected with the threaded portion, the threaded portion is arranged between the first end seat and the second end seat, and the rotating portion is arranged on one side, away from the threaded portion, of the second end seat.
Preferably, a key groove is formed in one side of the rotating portion.
Preferably, the base and the second end seat are both in an L-shaped structure, the first end seat and the second end seat are symmetrically arranged, and two adjacent sides of the hinge support are respectively connected with the first end seat and the base.
Preferably, the hinge support comprises a first support and a second support hinged with the first support, the first support is fixedly connected with the first end seat through a first bolt, and the second support is fixedly connected with the base through a second bolt.
Preferably, the mass block comprises a cylindrical part, a connecting part and a nut part, wherein a through hole is formed in the middle of the cylindrical part, the nut part is arranged in the through hole, one side of the nut part is fixedly connected with the connecting part, the connecting part is connected with one side of the cylindrical part through a third bolt, and the nut part is connected with the screw rod through threads.
Preferably, one end of the damping piece is fixedly connected with the base through a fourth bolt, and the other end of the damping piece is abutted with the second end seat through a rubber block.
Preferably, the elastic member is a spring, and two elastic members are symmetrically arranged.
Preferably, both ends of the elastic piece are fixedly connected with the second end seat and the base respectively through fourth bolts.
The utility model has the beneficial effects that:
the stepless frequency modulation vibration absorbing device moves to different positions along the screw rod through the mass block, the moving stroke is large, the controllable frequency band is widened, the range of the control frequency of the vibration absorbing device is widened, the structure with lower or higher vibration frequency can be suitable, the stepless frequency modulation effect can be achieved, the adjusting precision is high, the adjusting precision can be accurately matched with the excitation vibration, the vibration reduction effect is good, the stepless frequency modulation control of horizontal vibration can be realized through vertical installation of the vibration absorbing device, the stepless frequency modulation control of vertical vibration can be realized through horizontal installation of the vibration absorbing device, and the stepless frequency modulation control device is suitable for different installation occasions.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
FIG. 2 is a schematic view of the utility model in a vertical arrangement.
Fig. 3 is an enlarged schematic view at a in fig. 2.
Fig. 4 is an enlarged schematic view at B in fig. 2.
Fig. 5 is a cross-sectional view of fig. 2.
Fig. 6 is an enlarged schematic view at C in fig. 5.
In the figure: 1. a mass block; 11. a cylindrical portion; 12. a connection part; 13. a nut portion; 14. a through hole; 2. a base; 3. a screw rod; 31. a threaded portion; 32 rotating parts; 33. a key slot; 4. a first end seat; 5. a second end seat; 6. a hinged support; 61. a first support; 62. a second support; 7. an elastic member; 8. a damping member; 9. a thrust bearing; 10. rubber blocks.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, the present utility model provides a technical solution: the utility model provides a stepless frequency modulation's shock absorber, includes mass 1 and base 2, its characterized in that: still including running through in the middle part of quality piece 1 and with quality piece 1 through threaded connection's lead screw 3, the one end of lead screw 3 is connected with first end seat 4, and the other end is connected with second end seat 5, and first end seat 4 is connected with base 2 through hinge support 6, and second end seat 5 is connected with base 2 through elastic component 7, and one side that is close to hinge support 6 of elastic component 7 is equipped with damping piece 8, and damping piece 8's one end is connected with base 2, the other end and second end seat 5 butt.
The screw rod 3 is additionally arranged, so that the mass block 1 can linearly move when rotating relative to the screw rod 3, the relative position of the mass block 1 is changed through movement adjustment of the mass block 1, the stepless frequency modulation effect is achieved, the controllable frequency range is enlarged, compared with the traditional TMD, the vibration reduction frequency band is wider, the limitation of single control frequency of the traditional TMD is made up, the internal thread of the mass block 1 is matched with the external thread on the screw rod 3, the self-locking effect is achieved, the effect of fixing the mass block 1 is achieved, the vertical or horizontal installation of the vibration absorbing device can be selected through requirements, the horizontal or vertical stepless frequency modulation is achieved, and the absorption and control of horizontal or vertical vibration are achieved.
In order to facilitate stepless frequency modulation by rotating the screw rod 3, in this embodiment, preferably, the first end seat 4 and the second end seat 5 are both connected with the screw rod 3 through the thrust bearing 9, and the screw rod 3 penetrates through the second end seat 5, so that the mass block 1 is rotated relative to the screw rod 3 by rotating the screw rod 3 on the premise of limiting the circumferential rotation of the mass block 1, and then the mass block 1 moves along the linear direction, thereby achieving the stepless frequency modulation effect.
Referring to fig. 5, in order to conveniently drive the screw rod 3 to rotate, in this embodiment, preferably, the screw rod 3 includes a threaded portion 31 and a rotating portion 32 connected with the threaded portion 31, the threaded portion 31 is disposed between the first end seat 4 and the second end seat 5, the rotating portion 32 is disposed on one side of the second end seat 5 away from the threaded portion 31, so as to drive the threaded portion 31 to rotate through the rotating portion 32, and further, under the premise of limiting the circumferential rotation of the mass block 1, the mass block 1 is moved along the linear direction, thereby achieving the stepless frequency modulation effect, the internal thread of the nut portion 13 is matched with the external thread on the screw rod 3, and self-locking can be performed, thereby fixing the mass block 1 on the screw rod 3.
In order to further drive the screw rod 3 to rotate, in this embodiment, preferably, a key slot 33 is provided on one side of the rotating portion 32, so that the steering force is conveniently transmitted through the key slot 33, and the rotating portion 32 is conveniently driven to rotate.
In order to improve the stability of the structure, in this embodiment, preferably, the base 2 and the second end seat 5 are both in an L-shaped structure, the first end seat 4 and the second end seat 5 are symmetrically arranged, and two adjacent sides of the hinge support 6 are respectively connected with the first end seat 4 and the base 2.
Referring to fig. 4, in order to further improve structural stability, in this embodiment, the hinge support 6 preferably includes a first support 61 and a second support 62 hinged to the first support 61, the first support 61 is fixedly connected to the first end seat 4 by a first bolt, and the second support 62 is fixedly connected to the base 2 by a second bolt.
Referring to fig. 6, in order to facilitate installation and disassembly and replacement of components, in this embodiment, preferably, the mass block 1 includes a cylindrical portion 11, a connecting portion 12 and a nut portion 13, a through hole 14 is formed in the middle of the cylindrical portion 11, the nut portion 13 is disposed in the through hole 14, one side of the nut portion 13 is fixedly connected with the connecting portion 12, the connecting portion 12 is connected with one side of the cylindrical portion 11 through a third bolt, and the nut portion 13 is connected with the screw rod 3 through threads.
Referring to fig. 3, in order to facilitate the installation and fixation of the damping member 8 and improve the structural stability, in this embodiment, preferably, one end of the damping member 8 is fixedly connected with the base 2 through a fourth bolt, and the other end is abutted with the second end seat 5 through a rubber block 10.
In order to improve the structural stability and the vibration reduction stability conveniently, in this embodiment, preferably, the elastic member 7 is a spring, and two springs are symmetrically arranged, so that the two springs and the damping member 8 form a triangle stable structure, and the vibration reduction is more stable.
In order to facilitate the installation and fixation of the elastic member 7 and improve the structural stability, in this embodiment, preferably, both ends of the elastic member 7 are fixedly connected with the second end seat 5 and the base 2 respectively through fourth bolts.
The working principle and the using flow of the utility model are as follows:
the base 2 of the vibration absorbing device is vertically fixed in the vibration direction of the controlled structure, namely the screw rod 3 is vertically arranged with the vibration direction of the controlled structure, when the vibration direction of the controlled structure is the horizontal direction, the vibration absorbing device is vertically installed, stepless frequency modulation control of horizontal vibration is realized, when the vibration direction of the controlled structure is the vertical direction, the vibration absorbing device is horizontally installed, stepless frequency modulation control of vertical vibration is realized, and the vibration absorbing device is suitable for different installation occasions.
Then, after the vibration frequency of the controlled structure is measured, the self-vibration frequency of the vibration absorbing device is adjusted, specifically, the self-vibration frequency is adjusted through the movement of the mass block 1 on the screw rod 3, so that the self-vibration frequency is matched with the vibration frequency of the controlled structure, the self-vibration frequency of the vibration absorbing device can be reduced through the movement of the mass block 1 towards the second end seat 5, the self-vibration frequency of the vibration absorbing device can be increased through the movement of the mass block 1 towards the first end seat 4, so that the structure vibration frequency is adapted, the structure with lower or higher vibration frequency can be suitable, the limitation of the traditional TMD is broken through, the mass block 1 is adjusted to the corresponding position of the optimal frequency steplessly, the self-vibration frequency can be accurately matched with excitation vibration, and therefore the optimal control effect is achieved, the adjustment precision is high, and the vibration reduction effect is good.
When the controlled structure is excited by the outside to vibrate, the mass block 1 positioned on the screw rod 3 utilizes the resonance principle to absorb the vibration of the main structure to the self, then the elastic piece 7 and the damping piece 8 dissipate energy, and finally the vibration absorbing device and the structure reach a static state, thereby achieving the purpose of vibration control.
Finally, it should be noted that: the foregoing is merely a preferred example of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a stepless frequency modulation's shock absorber, includes quality piece (1) and base (2), its characterized in that: still including running through in quality piece (1) middle part and with quality piece (1) through threaded connection's lead screw (3), the one end of lead screw (3) is connected with first end seat (4), and the other end is connected with second end seat (5), first end seat (4) are connected with base (2) through hinge support (6), second end seat (5) are connected with base (2) through elastic component (7), one side that is close to hinge support (6) of elastic component (7) is equipped with damping piece (8), the one end and the base (2) of damping piece (8) are connected, and the other end and second end seat (5) butt.
2. The stepless frequency modulation shock absorber of claim 1, wherein: the first end seat (4) and the second end seat (5) are connected with the screw rod (3) through the thrust bearing (9), and the screw rod (3) penetrates through the second end seat (5).
3. The stepless frequency modulation shock absorber of claim 2, wherein: the screw rod (3) comprises a threaded portion (31) and a rotating portion (32) connected with the threaded portion (31), the threaded portion (31) is arranged between the first end seat (4) and the second end seat (5), and the rotating portion (32) is arranged on one side, far away from the threaded portion (31), of the second end seat (5).
4. A stepless frequency modulation shock absorber according to claim 3, wherein: a key groove (33) is formed in one side of the rotating part (32).
5. The stepless frequency modulation shock absorber of claim 1, wherein: the base (2) and the second end seat (5) are both in L-shaped structure, the first end seat (4) and the second end seat (5) are symmetrically arranged, and two adjacent sides of the hinge support (6) are respectively connected with the first end seat (4) and the base (2).
6. The stepless frequency modulation vibration absorber according to claim 5, wherein: the hinge support (6) comprises a first support (61) and a second support (62) hinged with the first support (61), the first support (61) is fixedly connected with the first end seat (4) through a first bolt, and the second support (62) is fixedly connected with the base (2) through a second bolt.
7. A stepless frequency modulation shock absorber according to any one of claims 1-6, wherein: the mass block (1) comprises a cylindrical portion (11), a connecting portion (12) and a nut portion (13), a through hole (14) is formed in the middle of the cylindrical portion (11), the nut portion (13) is arranged in the through hole (14), one side of the nut portion (13) is fixedly connected with the connecting portion (12), the connecting portion (12) is connected with one side of the cylindrical portion (11) through a third bolt, and the nut portion (13) is connected with a screw rod (3) through threads.
8. The stepless frequency modulation shock absorber of claim 1, wherein: one end of the damping piece (8) is fixedly connected with the base (2) through a fourth bolt, and the other end of the damping piece is abutted with the second end seat (5) through a rubber block (10).
9. The stepless frequency modulation shock absorber of claim 1, wherein: the elastic pieces (7) are springs, and two elastic pieces are symmetrically arranged.
10. The stepless frequency modulation shock absorber of claim 9, wherein: both ends of the elastic piece (7) are fixedly connected with the second end seat (5) and the base (2) through fourth bolts respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223205893.2U CN219451130U (en) | 2022-11-30 | 2022-11-30 | Stepless frequency modulation vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223205893.2U CN219451130U (en) | 2022-11-30 | 2022-11-30 | Stepless frequency modulation vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219451130U true CN219451130U (en) | 2023-08-01 |
Family
ID=87381947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223205893.2U Active CN219451130U (en) | 2022-11-30 | 2022-11-30 | Stepless frequency modulation vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219451130U (en) |
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2022
- 2022-11-30 CN CN202223205893.2U patent/CN219451130U/en active Active
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.33 Guangyun Road, Shishan town, Nanhai District, Foshan City, Guangdong Province Patentee after: Foshan University Country or region after: China Address before: No.33 Guangyun Road, Shishan town, Nanhai District, Foshan City, Guangdong Province Patentee before: FOSHAN University Country or region before: China |