CN215442491U - Novel tuned inertial mass rotary damper - Google Patents
Novel tuned inertial mass rotary damper Download PDFInfo
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- CN215442491U CN215442491U CN202121233370.1U CN202121233370U CN215442491U CN 215442491 U CN215442491 U CN 215442491U CN 202121233370 U CN202121233370 U CN 202121233370U CN 215442491 U CN215442491 U CN 215442491U
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Abstract
The utility model relates to the technical field of building shock absorption and discloses a novel tuned inertial mass rotary damper. The energy-saving device comprises a spring part for transmitting axial movement of a structure and a rotary damping part for consuming energy, wherein the spring part is connected with the rotary damping part through a ball screw pair to realize the conversion from the axial movement to the radial movement and amplify the movement amplitude, and a nut connected with the ball screw pair is also connected with an adjustable adjusting mass block. The damper has the functions of an energy-consuming damper and a tuning damper, and the rapid adjustment of the damping parameters can be realized by adjusting the total stiffness of the spring part, the lead of the ball screw pair and the mass of the adjusting mass block.
Description
Technical Field
The utility model relates to the technical field of building shock absorption, in particular to a novel tuned inertial mass rotary damper.
Background
The damper is used as a novel energy dissipation and shock absorption device and is widely applied to the field of vibration reduction of engineering structures such as bridges and high-rise buildings, general dampers can be divided into two types, namely an energy dissipation damper mainly for energy dissipation and shock absorption, such as liquid viscous energy dissipation, metal material buckling energy dissipation, material friction energy dissipation and the like, and a tuned damper for improving structural vibration characteristics by using an inverse point resonance principle according to functions, along with increasing application of the dampers, the energy dissipation damper and the tuned damper are often used for structural vibration control to meet design requirements, but the general energy dissipation damper can have a good energy dissipation effect under large displacement deformation, the general frequency adjustment range of the tuned damper is small, the overall mass is large, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel tuned inertial mass rotary damper for solving the technical problems in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a novel harmonious rotatory damper of inertial mass, is including the spring part that is used for transmitting structure axial motion and the rotatory damping part that is used for power consumption, the spring part passes through ball screw with rotatory damping part and is connected, realizes axial motion to radial motion's transformation and enlargies the motion amplitude, the nut that ball screw is vice to be connected still is connected with the regulation quality piece that can adjust, has the function of power consumption type damper and harmonious type damper concurrently. The spring part carries out reciprocating motion to store vibration energy and transmits axial motion to the ball screw pair, and after the ball screw pair converts the axial motion into rotary motion, the rotary damping part dissipates the vibration energy through damping liquid or eddy current.
Preferably, the spring part includes axle, intermediate lamella, bottom plate and spring, the spring setting is between intermediate lamella and bottom plate, the intermediate lamella is fixed epaxially, bottom plate fixedly connected with connecting pipe, the afterbody of axle stretches into connecting pipe and sliding connection, the other end and the lead screw fixed connection of connecting pipe.
Preferably, the left side of intermediate lamella is equipped with the front bezel, wear the guide bar between front bezel, intermediate lamella and the bottom plate, the spring is placed on the guide bar, front bezel and axle sliding connection.
Preferably, the rotation damping part is an eddy current energy consumption unit.
Preferably, the rotary damping part comprises a rotary cylinder and an outer cylinder, the rotary cylinder is fixed with a nut of the ball screw pair, the outer cylinder is fixed on the outer side of the rotary cylinder in a spaced mode, a magnet is annularly adsorbed on the outer wall of the rotary cylinder, and a fixed copper pipe is embedded in the inner wall of the outer cylinder.
Preferably, the tail part of a screw rod in the ball screw pair is machined into an optical axis, the bottom of the rotating cylinder is fixedly provided with a guide sleeve, and the optical axis of the ball screw pair extends into the guide sleeve and can move axially and radially relative to the guide sleeve to play a role in supporting and guiding.
Preferably, the tail part of the outer cylinder is connected with an auxiliary cylinder for fixedly installing the outer cylinder.
Preferably, the nut of the ball screw pair is fixed with the adjusting mass mounting section, the adjusting mass block is detachably mounted on the adjusting mass mounting section, the screw of the ball screw pair penetrates through the adjusting mass mounting section, the screw is not in contact with the adjusting mass mounting section, the adjusting mass block is detachably designed, and the whole mass of the adjusting mass block is conveniently adjusted.
Preferably, the ball screw pair optical axis and the screw transition region are provided with a limiting device, and the limiting device can be a limiting nut to prevent the separation failure of the screw shaft and the nut of the ball screw pair.
Preferably, the total rigidity of the springs on both sides of the middle plate of the spring part is the same, so that the damper has a self-resetting function.
The utility model has the beneficial effects that:
1. the utility model amplifies the axial speed at the two ends of the damper into the linear speed of a copper pipe shearing magnet magnetic field by means of the ball screw pair, consumes energy by utilizing the eddy current principle, realizes quality adjustment by increasing or decreasing the number of the mass adjusting blocks or adjusting the mass of the mass adjusting block body, and has the functions of an energy-consuming damper and a tuning damper;
2. the inertia of the rotating cylinder and the adjusting mass block during rotation and the motion amplification capacity of the ball screw pair are utilized, so that a device with smaller mass can replace the large mass of a common tuning damper.
3. When tuned vibration occurs, due to the inertia of the rotary damping and the resonance effect of the spring, the motion phase of the damping part is opposite to that of the spring part, so that the displacement amplitude of the damping part is larger than the vibration input displacement, namely, the large damping is generated under the condition of small displacement.
4. The adjustment is convenient, and the performance parameters of the damper can be quickly adjusted by adjusting the overall stiffness of the spring part, the lead of the ball screw pair and the mass of the adjusting mass block.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic view of a portion of the enlarged structure of A in FIG. 2;
fig. 4 is a schematic view of the magnet mounting arrangement.
In the figure, 1-lug plate, 2-shaft, 3-guide rod, 4-spring, 5-top plate, 6-middle plate, 7-bottom plate, 8-copper ring, 9-connecting pipe, 10-rod linear bearing, 11-shaft linear bearing, 12-fixing nut, 13-screw locking nut, 14-ball screw pair, 15-gland nut, 16-angular contact bearing I, 17-adjusting mass mounting section, 18-adjusting mass block, 19-rotating cylinder, 20-angular contact bearing II, 21-screw guide sleeve, 22-screw guide copper ring, 23-screw limiting nut, 24-magnet, 25-copper pipe, 26-outer cylinder and 27-auxiliary cylinder.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a novel tuned inerter rotary damper is shown in figures 1-4, and comprises a spring part for transmitting axial movement of a structure and a rotary damping part for dissipating energy, wherein the spring part and the rotary damping part are connected through a ball screw pair, so that conversion from axial movement to radial movement is realized, and the movement amplitude is amplified:
the spring part comprises a shaft, a guide rod, an intermediate plate, a bottom plate and a spring, wherein a copper ring is fixedly nested in the middle of the top plate, a rod linear bearing is fixedly installed in the middle of the intermediate plate, a connecting pipe is fixedly welded in the middle of the bottom plate, the shaft linear bearing is detachably installed in the connecting pipe, the top plate, the intermediate plate and the bottom plate are arranged in sequence and detachably assembled with the guide rod, two ends of the top plate, the intermediate plate and the bottom plate are fixed by fixing nuts, the spring is placed on the guide rod between the top plate and the intermediate plate as well as between the intermediate plate and the bottom plate, the total rigidity of the springs on two sides of the intermediate plate is the same, the shaft penetrates through the top plate and is fixedly connected with the intermediate plate, and the tail part of the shaft is matched and connected with the shaft linear bearing;
the rotary damping part comprises a rotary cylinder and an outer cylinder, the rotary cylinder is fixed with a nut of a ball screw pair, the outer cylinder is fixed on the outer side of the rotary cylinder in a spaced mode, magnets are adsorbed on the outer wall of the rotary cylinder in an annular mode, a fixed copper pipe is embedded in the inner wall of the outer cylinder, and the outer cylinder is connected with adjusting mass blocks with adjustable quantity.
The rotary damping part comprises a screw locking nut, a ball screw pair, a compression nut, an angular contact bearing I, a mass adjusting mounting section, a mass adjusting block, a rotary cylinder, an angular contact bearing II, a screw guide sleeve, a screw guide copper ring, a screw limit nut, a magnet, a copper pipe, an outer cylinder and an auxiliary cylinder, wherein the nut, the mass adjusting mounting section and the rotary cylinder of the ball screw are fixedly connected into a whole by using bolts, the screw guide sleeve is internally embedded with a fixed screw guide copper ring and is integrally and fixedly connected to the bottom of the rotary cylinder and is in transition fit with the tail end of a screw of the ball screw pair, the tail part of the screw in the ball screw pair is machined into an optical axis, the limit nut is arranged in the transition region of the optical axis and the screw, the magnet is annularly adsorbed on the outer wall of the rotary cylinder, the copper pipe is embedded in the outer cylinder, and the angular contact bearing I is arranged between the outer cylinder and the mass adjusting mounting section, an angular contact bearing II is assembled between the outer cylinder and the lead screw guide sleeve, the compression nut and the outer cylinder are fixedly connected through threads, the outer side of the angular contact bearing I is tightly propped, the auxiliary cylinder and the outer cylinder are fixedly connected through threads, and the outer side of the angular contact bearing II is tightly propped.
The ball screw pair converts the axial relative displacement at two ends of the damper into the rotary motion of a rotary damping part, thereby generating the inertial mass which is several times of the mass of the ball screw pair, the axial velocity at two ends of the damper is amplified into the linear velocity of a copper pipe shearing magnet magnetic field by relying on the ball screw pair, the energy consumption is realized by utilizing the eddy current principle, the rotary damping part generates the axial motion with opposite direction with the spring part due to the tuning effect, the input displacement can be amplified inside the damper, the adjustment of damping and mass amplification coefficients can be realized by selecting and using the ball screw pair with different lead, the frequency adjustment is realized by adjusting the overall rigidity of the spring part, the lead of the ball screw pair and an adjusting mass block, and the mass adjustment is realized by increasing and decreasing the number of the adjusting mass block or adjusting the mass of the mass block body.
The auxiliary cylinder and the shaft are both connected with lifting lugs for connecting the main body structure.
The adjusting mass mounting section is provided with threads, and the adjusting mass block can be detachably fixed on the adjusting mass mounting section through the threads to adjust the mass of the damper.
The magnet is the shape of a tile Ru ferro boron magnet, the direction of magnetization is radial, the magnetic poles of every two adjacent magnets of the magnets arranged in the shape of a ring are opposite, and the outer cylinder and the rotating cylinder are made of materials which are easy to magnetize, so that the magnetic shielding effect is improved, and the magnetic field intensity is increased.
The working principle is as follows: when the structure of installing novel harmonious rotatory attenuator of being used to matter receives earthquake or wind vibration effect to produce the layer and warp, novel harmonious rotatory attenuator of being used to matter spring part takes place to draw and presses and warp, thereby it carries out horizontal axial motion to drive the vice screw shaft of ball, further drive vice nut of ball and fixed connection rotate together in the part of nut, because rotatory inertia, the motion of rotatory damping part can lag behind the spring part, because harmonious effect, the spring part does the motion of axial opposite direction with rotatory damping part, the motion displacement is several times as big as the structure vibration deformation displacement, realize that the displacement enlargies. The rotary damping part drives the annular adsorption magnet to rotate in the copper pipe, when the magnetic field rotates relative to the copper pipe, induction current can be generated in the copper pipe, and the induction current enables the magnet to be subjected to ampere force with opposite rotation directions, namely electromagnetic damping force, so that energy consumption is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (12)
1. A novel tuned inertial mass rotary damper is characterized in that: the energy-saving device comprises a spring part used for transmitting axial movement of a structure and a rotary damping part used for consuming energy, wherein the spring part is connected with the rotary damping part through a ball screw pair to realize conversion from the axial movement to the radial movement and amplify the movement amplitude, and a nut connected with the ball screw pair is also connected with an adjusting mass block capable of adjusting the mass.
2. The novel tuned inerter rotary damper of claim 1, wherein: the spring part comprises a shaft, an intermediate plate, a bottom plate and a spring, the spring is arranged between the intermediate plate and the bottom plate, the intermediate plate is fixed on the shaft, the bottom plate is fixedly connected with a connecting pipe, the tail part of the shaft extends into the connecting pipe and is connected with the connecting pipe in a sliding mode, and the other end of the connecting pipe is fixedly connected with the screw rod.
3. The novel tuned inerter rotary damper of claim 2, wherein: the left side of intermediate lamella is equipped with the front bezel, worn the guide bar between front bezel, intermediate lamella and the bottom plate, the spring is placed on the guide bar, front bezel and axle sliding connection.
4. The novel tuned inerter rotary damper of claim 3, wherein: the total rigidity of the springs on the two sides of the middle plate of the spring part is the same, so that the damper has a self-resetting function.
5. The novel tuned inerter rotary damper of any of claims 1-4, wherein: the rotary damping part is an eddy current energy consumption unit.
6. The novel tuned inerter rotary damper of claim 5, wherein: the rotary damping part comprises a rotary cylinder and an outer cylinder, the rotary cylinder is fixed with a nut of the ball screw pair, the outer cylinder is fixed on the outer side of the rotary cylinder in a spaced mode, a magnet is adsorbed on the outer wall of the rotary cylinder in an annular mode, and a fixed copper pipe is embedded in the inner wall of the outer cylinder.
7. The novel tuned inerter rotary damper of claim 6, wherein: the tail part of a screw rod in the ball screw pair is machined into an optical axis, the bottom of the rotary cylinder is fixedly provided with a guide sleeve, and the optical axis of the ball screw pair extends into the guide sleeve and can move axially and radially relative to the guide sleeve.
8. The novel tuned inerter rotary damper of claim 7, wherein: the ball screw pair is characterized in that a limiting device is arranged in a transition area between the optical axis and the screw, and the limiting device can be a limiting nut to prevent the screw shaft and the nut of the ball screw pair from being separated and losing efficacy.
9. The novel tuned inerter rotary damper of any of claims 6-7, wherein: the tail of the outer barrel is connected with an auxiliary cylinder for fixedly mounting the outer barrel.
10. A novel tuned inerter rotary damper according to claim 1 or 2 or 3 or 4 or 6 or 7 or 8, wherein: the nut of the ball screw pair is fixed with an adjusting mass mounting section, the adjusting mass block is detachably mounted on the adjusting mass mounting section, and a screw of the ball screw pair penetrates through the adjusting mass mounting section.
11. The novel tuned inerter rotary damper of claim 5, wherein: the nut of the ball screw pair is fixed with an adjusting mass mounting section, the adjusting mass block is detachably mounted on the adjusting mass mounting section, and a screw of the ball screw pair penetrates through the adjusting mass mounting section.
12. The novel tuned inerter rotary damper of claim 9, wherein: the nut of the ball screw pair is fixed with an adjusting mass mounting section, the adjusting mass block is detachably mounted on the adjusting mass mounting section, and a screw of the ball screw pair penetrates through the adjusting mass mounting section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121233370.1U CN215442491U (en) | 2021-06-03 | 2021-06-03 | Novel tuned inertial mass rotary damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121233370.1U CN215442491U (en) | 2021-06-03 | 2021-06-03 | Novel tuned inertial mass rotary damper |
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| CN215442491U true CN215442491U (en) | 2022-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202202A (en) * | 2021-06-03 | 2021-08-03 | 清华大学 | Novel tuned inertial mass rotary damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202202A (en) * | 2021-06-03 | 2021-08-03 | 清华大学 | Novel tuned inertial mass rotary damper |
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