CN214461388U - Internal collision vibration type multi-mass damper - Google Patents
Internal collision vibration type multi-mass damper Download PDFInfo
- Publication number
- CN214461388U CN214461388U CN202120223947.4U CN202120223947U CN214461388U CN 214461388 U CN214461388 U CN 214461388U CN 202120223947 U CN202120223947 U CN 202120223947U CN 214461388 U CN214461388 U CN 214461388U
- Authority
- CN
- China
- Prior art keywords
- mass
- collision
- additional mass
- elastic element
- damper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses an internal collision vibration type multi-mass damper, wherein a first mass block is connected with a mounting plate through a first elastic element, which plays the role of limiting the movement of all additional mass blocks and can prevent the additional mass blocks from being separated from a guide rail; moreover, the damper has two energy consumption mechanisms, wherein one energy consumption mechanism is collision energy consumption realized after collision occurs between adjacent additional mass blocks, the other energy consumption mechanism is movement energy consumption realized in the movement process of each additional mass block on the guide rail, and the superposition of the two energy consumption mechanisms greatly improves the whole vibration reduction efficiency; meanwhile, as the collision occurs between the adjacent additional mass blocks, the instant huge acting force of the collision cannot be generated on the main body structure provided with the additional mass blocks, and the situation that the main body structure is locally damaged can be effectively avoided.
Description
Technical Field
The utility model relates to a structure control device field, in particular to interior collision type multi-mass damper that shakes.
Background
The following mass dampers are commonly used in the prior art: tuned Mass Dampers (TMD), nonlinear energy traps (NES), and bump-and-shake type mass dampers.
The spring component in the tuned mass damper is a linear spring, and the rigidity of the linear spring cannot change along with the expansion and contraction of the linear spring. Thus, the tuned mass damper has only a constant natural frequency of oscillation when the additional mass and spring rate of the tuned mass damper are determined. When the natural vibration frequency of the main body structure changes, the tuned mass damper and the main body structure are not tuned any more, an effective resonance mechanism cannot be formed between the tuned mass damper and the main body structure, and the vibration damping performance of the tuned mass damper is greatly degraded, namely, the tuned mass damper is sensitive to the dynamic characteristics of the main body structure.
For nonlinear energy traps, the stiffness of the trap changes with displacement, and the trap has a continuously changing natural frequency, so that the trap can resonate with a plurality of frequencies. However, when the structure is subjected to a small (large) load, the NES displacement is small (large) and its corresponding stiffness is small (large), i.e. the natural frequency of NES is small (large) when the input energy is small (large). In both cases, the difference between the natural frequency of the NES and the natural frequency of the main structure is large, so that an effective resonance mechanism is difficult to form, and the damping capability is degraded, i.e., the nonlinear energy trap is sensitive to the input energy.
For the sensitive problems of the tuned mass damper and the nonlinear energy trap, the collision vibration type mass damper is additionally provided with a collision energy dissipation mechanism on the basis of the mass damper, energy can be quickly dissipated through collision, and the vibration reduction efficiency is greatly improved under the condition of the same mass. However, the collision of the collision vibration type mass damper occurs between the additional mass and the main structure, and the collision generates huge acceleration and acting force at the moment, so that the components are easily stressed too much to generate local damage, and the human sense and psychological panic of a user are aggravated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide an efficient interior collision vibration type multi-mass damper of damping, can reduce substantially the vibration response who uses major structure such as its building structure, machinery, equipment.
According to the utility model discloses interior bumping many mass damper of vibration type, including mounting panel, guide rail and at least three additional quality piece, wherein, the guide rail is fixed on the mounting panel, each the equal slidable mounting of additional quality piece is in on the guide rail, in order to be located both ends the additional quality piece is first quality piece, each first quality piece respectively through an elastic element with the mounting panel links to each other.
According to the utility model discloses interior bumping many quality dampers of vibration type has following beneficial effect at least: in the internal collision vibration type multi-mass damper, the first mass block is connected with the mounting plate through the first elastic element, so that the motion limiting effect on all the additional mass blocks is realized, and the situation that the additional mass blocks are separated from the guide rail can be prevented; moreover, the damper has two energy consumption mechanisms, wherein one energy consumption mechanism is collision energy consumption realized after collision occurs between adjacent additional mass blocks, the other energy consumption mechanism is movement energy consumption realized in the movement process of each additional mass block on the guide rail, and the superposition of the two energy consumption mechanisms greatly improves the whole vibration reduction efficiency; meanwhile, as the collision occurs between the adjacent additional mass blocks, the instant huge acting force of the collision cannot be generated on the main body structure provided with the additional mass blocks, and the situation that the main body structure is locally damaged can be effectively avoided.
According to some embodiments of the invention, each additional mass is a collision surface facing a side adjoining the additional mass, said collision surface being covered with a deformation layer.
According to some embodiments of the invention, the material of the deformation layer is a rigid material or an elastic material or a viscous material.
According to some embodiments of the present invention, the mounting plate is provided with a fixing device, and each of the one end of the first mass block is connected to the first mass block and the other end of the first mass block is connected to the fixing device.
According to some embodiments of the utility model, fixing device is including setting up respectively the upright of guide rail both sides, both sides the upright with each be connected with respectively between the first quality piece No. one elastic element.
According to some embodiments of the present invention, the additional mass block located in the middle is used as a second mass block, and each of the second mass blocks is connected to the vertical members on both sides through a second elastic element.
According to some embodiments of the invention, the first elastic element and/or the second elastic element is parallel to the mounting plate.
According to some embodiments of the invention, the first elastic element and the second elastic element are respectively a linear spring or a non-linear spring or a combination of a linear spring and a non-linear spring.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples;
fig. 1 is an overall structure diagram of an internal-collision vibration type multi-mass damper according to an embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, the utility model discloses interior collision vibration type multi-mass damper of embodiment, including mounting panel 1, guide rail 2 and at least three additional quality piece 3, wherein, guide rail 2 fixes on mounting panel 1, and the equal slidable mounting of each additional quality piece 3 is on guide rail 2, and it can be understood that each additional quality piece 3 arranges side by side in proper order along the extending direction of guide rail 2. Further, the additional mass blocks 3 at two ends are used as first mass blocks 3a, and each first mass block 3a is connected with the mounting plate 1 through a first elastic element 4.
According to the internal collision vibration type multi-mass damper provided by the embodiment of the utility model, the first mass block 3a is connected with the mounting plate 1 through the first elastic element 4, so that the motion limiting effect on all the additional mass blocks 3 is realized, and the additional mass blocks 3 can be prevented from being separated from the guide rail 2; moreover, the damper has two energy dissipation mechanisms, wherein one energy dissipation mechanism is collision energy dissipation realized after collision occurs between the adjacent additional mass blocks 3, the other energy dissipation mechanism is movement energy dissipation realized in the movement process of each additional mass block 3 on the guide rail 2, and the superposition of the two energy dissipation mechanisms greatly improves the whole vibration reduction efficiency; meanwhile, as the collision occurs between the adjacent additional mass blocks 3, the instant huge acting force of the collision cannot be generated on the main body structure provided with the additional mass blocks, and the situation that the main body structure is locally damaged can be effectively avoided.
In particular, in this embodiment, collision may occur between adjacent additional masses 3, that is, the side of each additional mass 3 facing the adjacent additional mass 3 is a collision surface; wherein, each collision face is covered with the deformation layer respectively to this can adjust the collision intensity, with the help of material deformation power consumption, reduce the possibility that additional quality piece 3 takes place to damage after the collision to and reduce the noise that produces because of the collision. It will be understood that, in practice, the deformation layer may be made of a rigid material, an elastic material or a viscous material, and each deformation layer may be made of the same or different materials.
In some embodiments of the present invention, the mounting plate 1 is provided with a fixing device, one end of each first mass block 4 is connected to the first mass block 3a, and the other end is connected to the fixing device. More specifically, the fixing device of this embodiment includes upright pieces 51 respectively disposed at both sides of the guide rail 2, and a first elastic element 4 is respectively connected between the upright pieces 51 at both sides and each first mass block 3 a; as shown in fig. 1, the upright members 51 on both sides are symmetrically distributed with respect to the guide rail 2, and each of the first elastic elements 4 is parallel to the mounting plate 1. With the additional mass 3 in the middle as the second mass 3b, in other embodiments, each second mass can be connected to the upright members 51 on both sides via a second elastic element, it being understood that the second elastic element can be arranged parallel to the mounting plate 1. The first elastic element 4 and the second elastic element are respectively a linear spring or a nonlinear spring or a combination of a linear spring and a nonlinear spring, that is, the spring type of each first elastic element 4/second elastic element can be not only a linear spring or a nonlinear spring or a combination of a linear spring and a nonlinear spring, but also a combination of the three spring types, and is specifically selected according to actual needs.
Referring to fig. 1, the internal collision vibration type multi-mass damper according to the embodiment of the present invention will be described by taking the initial distance between adjacent collision surfaces as 0 as an example, and the combination of all the first elastic elements 4 (and the second elastic elements) will be referred to as a spring group. When the first elastic element 4 is perpendicular to the moving direction of the first mass block 3a, the tensioned spring set generates a linear restoring force in the moving direction of the additional mass block 3, which is equivalent to a spring component in TMD; the spring set with the first elastic element 4 kept long when being perpendicular to the moving direction of the first mass block 3a generates approximately cubic restoring force in the moving direction of the additional mass block 3, which is equivalent to the spring component in NES. It will be understood that the elastic element number one 4 (and the elastic element number two) between the additional mass 3 and the mounting plate 1 can also be composed of both linear and non-linear springs, each set of springs being able to be connected to the same or different uprights 51, arranged so that the additional mass 3 is able to have a restoring force of both linear and non-linear character in the direction of movement.
The working principle of the internal-collision vibration type multi-mass damper provided by the embodiment of the utility model is that when the main structure vibrates, the spring group drives all the additional mass blocks 3 to move along the guide rail 2, the type combination and the rigidity of the first elastic element 4 (and the second elastic element) can be selected as required, and the damper can be tuned with the main structure by adjusting the spring group; due to the frictional damping between the additional mass 3 and the guide rail 2, the additional mass may consume a part of the energy during the movement. By designing the size of each additional mass block 3, the type of the first elastic element 4 (and the second elastic element), the rigidity coefficient and the like, the motion of the adjacent additional mass blocks 3 is asynchronous, and when the displacement difference of the adjacent additional mass blocks 3 is smaller than the initial distance of the corresponding collision surface, the adjacent additional mass blocks 3 collide with each other, so that energy is consumed. When the additional mass blocks 3 are driven to reciprocate along the guide rail 2 due to the vibration of the main body structure, two energy dissipation mechanisms exist in the internal collision vibration type multi-mass damper, and the motion energy dissipation of the additional mass and the collision energy dissipation between the additional masses are realized when no collision exists; and because the energy is dissipated in the collision at a high speed, the sensitivity problems of TMD and NES in the prior art are improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. Interior collision mode of shaking multi-mass damper, its characterized in that: comprises that
Mounting a plate;
the guide rail is fixed on the mounting plate; and
the additional mass blocks are arranged on the guide rail in a sliding mode, the additional mass blocks located at two ends are used as first mass blocks, and the first mass blocks are connected with the mounting plate through first elastic elements respectively.
2. The internal crash mode multi-mass damper of claim 1, wherein: the side face, facing to the additional mass block, of each additional mass block is a collision face, and a deformation layer covers the collision face.
3. The internal crash mode multi-mass damper of claim 2, wherein: the deformation layer is made of rigid materials, elastic materials or viscous materials.
4. The internal crash mode multi-mass damper of claim 1, wherein: and a fixing device is arranged on the mounting plate, one end of each elastic element is connected with the first mass block, and the other end of each elastic element is connected to the fixing device.
5. The internal crash mode multi-mass damper of claim 4, wherein: the fixing device comprises vertical pieces which are arranged on two sides of the guide rail respectively, and the first elastic elements are connected between the vertical pieces on the two sides and the first mass blocks respectively.
6. The internal crash mode multi-mass damper of claim 5, wherein: and the additional mass block positioned in the middle is taken as a second mass block, and each second mass block is connected with the vertical pieces on two sides through a second elastic element.
7. The internal crash mode multi-mass damper of claim 6, wherein: the first elastic element and/or the second elastic element are parallel to the mounting plate.
8. The internal crash mode multi-mass damper according to claim 6 or 7, characterized in that: the first elastic element and the second elastic element are respectively a linear spring or a nonlinear spring or a combination of the linear spring and the nonlinear spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120223947.4U CN214461388U (en) | 2021-01-26 | 2021-01-26 | Internal collision vibration type multi-mass damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120223947.4U CN214461388U (en) | 2021-01-26 | 2021-01-26 | Internal collision vibration type multi-mass damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214461388U true CN214461388U (en) | 2021-10-22 |
Family
ID=78116529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120223947.4U Active CN214461388U (en) | 2021-01-26 | 2021-01-26 | Internal collision vibration type multi-mass damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214461388U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796432A (en) * | 2021-01-26 | 2021-05-14 | 广州大学 | Internal collision vibration type multi-mass damper |
-
2021
- 2021-01-26 CN CN202120223947.4U patent/CN214461388U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796432A (en) * | 2021-01-26 | 2021-05-14 | 广州大学 | Internal collision vibration type multi-mass damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112796432A (en) | Internal collision vibration type multi-mass damper | |
| Xia et al. | Bistable attachments for wideband nonlinear vibration attenuation in a metamaterial beam | |
| JP4726977B2 (en) | Seismic isolation table with damping mechanism and seismic isolation table unit using the same | |
| CN214461388U (en) | Internal collision vibration type multi-mass damper | |
| US20060225980A1 (en) | Tunable adjustable multi-element hybrid particle damper | |
| Yang et al. | Investigation of coupled lever-bistable nonlinear energy harvesters for enhancement of inter-well dynamic response | |
| US7568565B2 (en) | Device, a system and a method for transferring vibrational energy | |
| Wang et al. | A vertical‐vibro‐impact‐enhanced track bistable nonlinear energy sink for robust and comprehensive control of structures | |
| Vasconcellos et al. | Vibration attenuation and energy harvesting in metastructures with nonlinear absorbers conserving mass and strain energy | |
| Zhang et al. | Impact and clutch nonlinearities in the seismic response of inerto-rocking systems | |
| Yun et al. | Assessment of the stability of isolated vibratory building services systems and the use of inertia blocks | |
| Chehaibi et al. | Collision modeling of single unit impact absorber for mechanical systems vibration attenuation | |
| JP2001234972A (en) | Vibration damping unit and damping device | |
| JPH03272343A (en) | Dual type mass damper | |
| JP2007177864A (en) | Damping device for base isolation system | |
| KR102468715B1 (en) | Dynamic absorber | |
| US7415397B2 (en) | Frequency shifting isolator system | |
| KR102388199B1 (en) | Dynamic absorber and vibration reduce facilities including the same | |
| JP3610004B2 (en) | Building damping device | |
| US20230366443A1 (en) | Vibration absorbing device with a weighted membrane ano fluid displacement | |
| CN218672607U (en) | Air conditioning equipment | |
| JP2001317586A (en) | Tuned mass damper | |
| KR20020012787A (en) | Restrained Stroke Active Tuned Mass Damper Device in Structures | |
| JP2000314448A (en) | Base isolation device | |
| Li et al. | Assessing the Dissipative Capacity of Particle Impact Dampers Based on their Nonlinear Bandwidth Characteristics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |