CN213204554U - Rotary electromagnetic inerter damper - Google Patents
Rotary electromagnetic inerter damper Download PDFInfo
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- CN213204554U CN213204554U CN202021793534.1U CN202021793534U CN213204554U CN 213204554 U CN213204554 U CN 213204554U CN 202021793534 U CN202021793534 U CN 202021793534U CN 213204554 U CN213204554 U CN 213204554U
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- damper
- damper shell
- flexible cable
- spring
- light
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- 238000005096 rolling process Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 7
- 238000013016 damping Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
The utility model relates to a rotary electromagnetic inertia damper, which comprises a damper shell, a spring, a double-strand flexible cable and a light turntable; the damper shell is a hollow cavity structure with two sections, one end of a double-strand flexible cable is fixedly connected with the light rotary disc, the other end of the double-strand flexible cable is fixedly connected with the flexible cable fixing disc, the flexible cable fixing disc is fixed at the bottom of the spring fixing tray, the spring fixing tray is positioned in the cavity at the end with the larger inner diameter of the damper shell and can axially move along the inner wall of the damper shell, the light rotary disc is positioned in the cavity at the end with the smaller inner diameter of the damper shell, and the spring is positioned at the diameter-changing position of the spring fixing tray and the damper shell; the light turntable is sequentially connected with a first linkage device, an accelerating gear, a rotating flywheel, a second linkage device and a direct current motor through a connecting shaft; the spring fixing tray is fixedly connected with a bearing platform positioned outside the damper shell through a push rod; the utility model discloses can reduce mechanical connection, improve the attenuator durability, reduce cost of maintenance.
Description
Technical Field
The utility model belongs to the technical field of the attenuator, especially, relate to rotation type electromagnetism is used to matter attenuator.
Background
The electromagnetic inertia damper utilizes a flywheel as an inertia element, can generate considerable equivalent inertia mass through high-speed rotation of the electromagnetic inertia damper, is used for generating electromagnetic damping force by a direct-current motor, takes an accelerating gear as an amplifier, can obviously increase the rotating speed of the flywheel and a rotor of the direct-current motor, and further increases the inertia mass coefficient and the electromagnetic damping coefficient of the damper. It has the advantages of quick response, adjustable damping force, moderate cost, good fault tolerance, etc., and is widely applied to civil engineering and aerospace. Among the existing inertial mass dampers, the inertial mass dampers can be divided into tuned inertial mass dampers, electromagnetic inertial mass dampers and magnetorheological fluid dampers according to the adjustable frequency and different energy consumption mechanisms of the dampers.
The most common form at present is a ball screw transmission electromagnetic inertial mass damper, which utilizes ball screw transmission and external resistance to consume energy, and because of the mechanical property of the ball screw, the mechanical loss between the ball and the rolling groove and between the ball and the rolling groove can affect the transmission efficiency to a great extent, and because the ball moves under the guiding action of the rolling groove, the stress of the ball in the rolling groove is not uniform.
Therefore, based on the problems, the rotary electromagnetic inertia damper for torque transmission, which can reduce mechanical connection, improve the durability of the electromagnetic inertia damper and reduce maintenance cost, has important practical significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides one kind and can reduce mechanical connection, improves the electromagnetism and is used to the durability of matter attenuator, reduces cost of maintenance's the driven rotation type electromagnetism of moment of torsion is used to matter attenuator.
The utility model provides a its technical problem take following technical scheme to realize:
the rotary electromagnetic inertia damper comprises a damper shell, a spring, a double-strand flexible cable and a light turntable; the damper shell is of a hollow cavity structure with two sections, one end of the double-strand flexible cable is fixedly connected with the light rotary disc, the other end of the double-strand flexible cable is fixedly connected with the flexible cable fixing disc, the flexible cable fixing disc is fixed at the bottom of the spring fixing tray, the spring fixing tray is located in the cavity at the end with the larger inner diameter of the damper shell and can axially move along the inner wall of the damper shell, the light rotary disc is located in the cavity at the end with the smaller inner diameter of the damper shell, and the spring is located at the diameter-changing position of the spring fixing tray and the damper shell;
the light turntable is sequentially connected with a first linkage device, an accelerating gear, a rotating flywheel, a second linkage device and a direct current motor which are all positioned in a cavity at the smaller end of the inner diameter of the damper shell through a connecting shaft; the spring fixing tray is fixedly connected with a bearing platform positioned outside the damper shell through a push rod;
in the initial state, the bifilar flexible cable has a certain initial winding, and the spring is in a compressed state.
Furthermore, the distance between the two cables of the double-strand flexible cable on one side of the flexible cable fixing disc is smaller than the distance between the two cables on one side of the light rotating disc.
Furthermore, an annular bearing is arranged between the light turntable and the inner wall of the damper shell.
Furthermore, at least one pair of balls are symmetrically arranged on the side wall of the spring fixing tray, and a rolling groove matched with the balls is fixedly arranged on the inner wall of the damper shell, so that the spring fixing tray can axially move along the rolling groove.
Furthermore, a plurality of fixed partition plates are installed at intervals in the cavity at the end with the smaller inner diameter of the damper shell, and the connecting shaft penetrates through the fixed partition plates in sequence.
Furthermore, a thrust bearing is installed at the position where the push rod penetrates through the damper shell.
Furthermore, the damper shell forms two hollow cavity structures with cross sections through a step structure, a cushion block is fixedly arranged in the damper shell at the step structure, and one end of the spring is fixedly connected with the cushion block.
Furthermore, a connecting piece is fixedly arranged at the bearing platform.
The utility model has the advantages that:
the utility model aims to provide a transmission mode which combines the whistle-pulling type inhaul cable winding and the spring to achieve balanced rotation; the combination of the inhaul cable winding and the spring can achieve higher adjustability so as to meet the requirements of semi-active vibration (vibration) control of various building structures, and the damping coefficient of the electromagnetic damper can be changed by changing the inertia mass of the rotating flywheel and the size of the external resistor; the utility model discloses a attenuator compact structure, maneuverability is strong, and application scope is extensive, has engineering application prospect.
Drawings
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
Fig. 1 is a cross-sectional view of a rotary electromagnetic inertial mass damper according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the rotary electromagnetic inertial mass damper according to the embodiment of the present invention, wherein the double-stranded flexible cables are fixed to the light-weight turntable and the flexible cable fixing plate;
fig. 3 is a schematic structural view of a fixed partition plate of the rotary electromagnetic inertial mass damper according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a spring fixing tray of the rotary electromagnetic inertial mass damper according to an embodiment of the present invention;
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1 to 4.
The rotary electromagnetic inertial mass damper provided by the embodiment comprises a damper shell 15, a spring 1, a double-strand flexible cable 2 and a light turntable 5; the damper shell 15 is a hollow cavity structure with two sections, one end of the double-strand flexible cable 2 is fixedly connected with the light rotary disc 5, the other end of the double-strand flexible cable is fixedly connected with the flexible cable fixing disc 7c, the flexible cable fixing disc 7c is fixed at the bottom of the spring fixing tray 7b, the spring fixing tray 7b is located in a cavity at the end with the larger inner diameter of the damper shell 15 and can axially move along the inner wall of the damper shell 15, the light rotary disc 5 is located in a cavity at the end with the smaller inner diameter of the damper shell 15, and the spring 1 is located at the position where the diameter of the spring fixing tray 7b and the damper shell 15 is reduced;
the light rotating disc 5 is sequentially connected with a first linkage 8, an accelerating gear 11, a rotating flywheel 10, a second linkage 12 and a direct current motor 14 which are all positioned in a cavity at the smaller inner diameter end of the damper shell 15 through a connecting shaft 9; the spring fixing tray 7b is fixedly connected with a bearing platform 18 positioned outside the damper shell 15 through a push rod 16;
in the initial state, the bifilar flexible cable 2 has a certain initial winding, and the spring 1 is in a compressed state.
It should be noted that the distance between the two strands of the double-strand flexible cables 2 on the side of the flexible cable fixing disc 7c is smaller than the distance between the two strands on the side of the light rotating disc 5.
In order to facilitate the rotation of the light-weight rotary disc 5, it is considered that an annular bearing 4 is installed between the light-weight rotary disc 5 and the inner wall of the damper housing 15.
In order to facilitate the axial movement of the spring fixing tray 7b, it is considered that at least one pair of balls 6b are symmetrically installed on the side wall of the spring fixing tray 7b, and a rolling groove 3 matched with the balls is fixedly arranged on the inner wall of the damper housing 15, so that the spring fixing tray 7b can move axially along the rolling groove 3.
A plurality of fixed partition plates 13 are installed at intervals in the cavity of the smaller end of the inner diameter of the damper shell 15, the connecting shaft 9 penetrates through the fixed partition plates 13 in sequence, and the stability of the connecting shaft 9 can be enhanced by arranging the fixed partition plates 13.
Also, in order to reduce the pushing resistance, it is considered that the push rod 16 is installed with a thrust bearing 17 through the damper housing 15.
In this embodiment, the damper housing 15 forms a hollow cavity structure with two cross sections through a step structure, a cushion block 7a is fixedly arranged in the damper housing 15 at the step structure, and one end of the spring 1 is fixedly connected with the cushion block 7 a.
The bearing platform 18 is fixedly provided with a connecting piece 19, and the connecting piece 19 is used for fixing the damper on a building structure.
In this embodiment, it is considered that both ends of the double-strand flexible cable 2 respectively pass through the bolts 20b and are then respectively mounted on the light-weight turntable 5 and the flexible cable fixing disk 7c through the bolts 20b, so as to realize the fixed connection between the double-strand flexible cable 2 and the light-weight turntable 5 and the flexible cable fixing disk 7 c.
For example, in the embodiment, when the push rod 16 moves linearly, the initially wound two-strand flexible cable 2 moves along with the push rod, and cooperates with the spring 1 to work, the winding force is unwound to drive the light-weight rotary disc 5 to rotate along with the winding force, the linear motion is converted into the rotation of the light-weight rotary disc through the two-strand flexible cable, the light-weight rotary disc passes through the couplers 8 and 12, the accelerating gear 11 is amplified to rotate, the rotating flywheel 10 drives the direct current motor 14 to rotate, and the generated current is consumed through the external resistor. When the wire is completely unwound, the light turntable 5 still rotates at a high speed due to the action of inertia, and drives the two strands of flexible cables to wind, and the process is repeated; through the arrangement of the damper, the damper can effectively dissipate energy transferred to the building structure, so that the deformation and damage of the building structure are reduced;
the application relates to a whistle-pulling type transmission rotary electromagnetic inertia damper, which analyzes the output force of the damper due to the characteristic that a flexible cable is not pressed when being pulled, and the damper is under the action of tension
F＝Ff+Fg+Fb+Fz+Fs
FfRepresenting the force generated by a rotating flywheel, FgRepresenting the force generated by the DC rotor of the DC motor, FbRepresenting the force generated by the electromagnetic torque of the DC motor, FzForce generated by light rotating disk, FsRepresenting the force generated by the spring;
Tfrepresenting the torque, T, generated by the rotating flywheelgRepresenting the torque, T, generated by the rotor of the machinezRepresenting the torque produced by the lightweight rotor, IzRepresenting the moment of inertia of the light rotating disk, IfRepresenting the moment of inertia of the rotating flywheel, IgThe motor resistance represents the inertia moment R of a motor rotor, K represents a motor coefficient, alpha represents the acceleration ratio of a gear, lambda represents the transmission efficiency of the flexible cable, x represents the linear displacement of the end of the flexible cable, and t represents time;
Fs＝Kdx
Kdindicating the stiffness of the spring
Wherein, L represents the linear distance for releasing one winding, a represents the cable distance when the cable is wound, and r represents the cable radius;
under the action of pressure, the cable is wound under the action of inertia, the deformation of the spring under the action of pressure is greater than that under the action of tension, the tension of the cable is increased when the spring is tensioned again, and the energy generated when the spring is compressed is transferred to the cable.
The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (8)
1. Rotation type electromagnetism inertial mass attenuator, its characterized in that: comprises a damper shell, a spring, a bifilar flexible cable and a light turntable; the damper shell is of a hollow cavity structure with two sections, one end of the double-strand flexible cable is fixedly connected with the light rotary disc, the other end of the double-strand flexible cable is fixedly connected with the flexible cable fixing disc, the flexible cable fixing disc is fixed at the bottom of the spring fixing tray, the spring fixing tray is located in the cavity at the end with the larger inner diameter of the damper shell and can axially move along the inner wall of the damper shell, the light rotary disc is located in the cavity at the end with the smaller inner diameter of the damper shell, and the spring is located at the diameter-changing position of the spring fixing tray and the damper shell;
the light turntable is sequentially connected with a first linkage device, an accelerating gear, a rotating flywheel, a second linkage device and a direct current motor which are all positioned in a cavity at the smaller end of the inner diameter of the damper shell through a connecting shaft; the spring fixing tray is fixedly connected with a bearing platform positioned outside the damper shell through a push rod;
in the initial state, the bifilar flexible cable has a certain initial winding, and the spring is in a compressed state.
2. A rotary electromagnetic inertance damper as claimed in claim 1, wherein: the distance between two cables of the double-strand flexible cable on one side of the flexible cable fixing disc is smaller than that on one side of the light rotating disc.
3. A rotary electromagnetic inertance damper as claimed in claim 1, wherein: and an annular bearing is arranged between the light turntable and the inner wall of the damper shell.
4. A rotary electromagnetic inertance damper as claimed in claim 1, wherein: at least one pair of balls are symmetrically installed on the side wall of the spring fixing tray, and a rolling groove matched with the balls is fixedly formed in the inner wall of the damper shell, so that the spring fixing tray can move axially along the rolling groove.
5. A rotary electromagnetic inertance damper as claimed in claim 1, wherein: a plurality of fixed partition plates are installed at intervals in the cavity of the smaller end of the inner diameter of the damper shell, and the connecting shaft penetrates through the fixed partition plates in sequence.
6. A rotary electromagnetic inertance damper as claimed in claim 1, wherein: and the push rod penetrates through the damper shell and is provided with a thrust bearing.
7. A rotary electromagnetic inertance damper as claimed in claim 1, wherein: the damper shell forms two hollow cavity structures with cross sections through a step structure, a cushion block is fixedly arranged in the damper shell at the step structure, and one end of the spring is fixedly connected with the cushion block.
8. A rotary electromagnetic inertance damper as claimed in claim 1, wherein: and a connecting piece is fixedly arranged at the bearing platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021793534.1U CN213204554U (en) | 2020-08-25 | 2020-08-25 | Rotary electromagnetic inerter damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021793534.1U CN213204554U (en) | 2020-08-25 | 2020-08-25 | Rotary electromagnetic inerter damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213204554U true CN213204554U (en) | 2021-05-14 |
Family
ID=75842062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021793534.1U Expired - Fee Related CN213204554U (en) | 2020-08-25 | 2020-08-25 | Rotary electromagnetic inerter damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213204554U (en) |
-
2020
- 2020-08-25 CN CN202021793534.1U patent/CN213204554U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210514 |