CN214465762U - Comb-tooth-shaped cup-shaped eddy current damper - Google Patents
Comb-tooth-shaped cup-shaped eddy current damper Download PDFInfo
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- CN214465762U CN214465762U CN202120527824.XU CN202120527824U CN214465762U CN 214465762 U CN214465762 U CN 214465762U CN 202120527824 U CN202120527824 U CN 202120527824U CN 214465762 U CN214465762 U CN 214465762U
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Abstract
A comb-tooth cup-shaped eddy current damper comprising: the spiral magnetic motor is characterized in that the spiral magnetic motor is arranged as a hollow cylindrical outer sleeve, a first end cover is fixedly connected to the upper end face of the outer sleeve, a second end cover is fixedly connected to the lower end face of the outer sleeve, an eddy current unit is fixedly connected to the opposite face of the first end cover and the second end cover, the spiral magnetic motor further comprises a screw shaft which penetrates through the first end cover and the second end cover, a nut is connected to the outer surface of the screw shaft in a threaded mode, a center plate is fixedly connected to the outer surface of the nut, a magnetic unit is fixedly connected to the outer surface of the center plate, and the magnetic unit and the eddy current unit are arranged in a staggered mode. The number of the magnetic supply units and the number of the eddy current units can be changed through setting, and further requirements of actual engineering on the aspects of the inertia force and the damping force of the damper can be met.
Description
Technical Field
The utility model belongs to the technical field of the attenuator technique and specifically relates to a broach form cup type eddy current damper.
Background
With the development of technology, dampers have become essential devices to solve the vibration problem and to ensure engineering safety and equipment performance. Viscous dampers used in the traditional vibration reduction technology have an oil leakage phenomenon under the action of reciprocating load, and once the dampers leak oil, the damping force and the damping coefficient of the dampers are reduced, so that the design requirements are not met any more, and the engineering has potential safety hazards. In addition, the traditional damper also has a series of problems of short service life, high maintenance cost, complex connection, low sensitivity, large starting resistance and the like. In the face of the common problem in the fields of vibration and impact, the electromagnetic eddy current technology is also applied to the damper, and the basic principle is as follows: when the conductor plate in the local magnetic field cuts magnetic lines of force, eddy current is generated in the conductor plate, and the eddy current generates a new magnetic field opposite to the original magnetic field in direction, so that a damping force for preventing the original magnetic field and the conductor from moving relatively is formed between the original magnetic field and the conductor, and meanwhile, the kinetic energy obtained by the conductor plate is converted into heat energy through the resistance effect of the conductor plate and dissipated.
The efficiency index of the existing eddy current damper is still limited by the lead of the ball screw pair and the whole axial size, the inertia coefficient is small, and the application of the existing eddy current damper in engineering practice is limited to a large extent.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that the efficiency of the existing damper is not high and the inertia coefficient is small, the utility model provides a comb-tooth-shaped cup type eddy current damper.
The utility model provides a solve its technical problem's technical scheme is:
a comb-tooth cup-shaped eddy current damper, comprising: set up to hollow cylinder's outer sleeve, outer sleeve internal surface fixedly connected with first copper, the up end fixedly connected with first end cover of outer sleeve, the lower terminal surface fixedly connected with second end cover of outer sleeve, fixedly connected with vortex unit on the face that first end cover and second end cover are relative, still including the lead screw axle that runs through first end cover and second end cover setting, the surface threaded connection of lead screw axle has the nut, at the outer fixed surface of nut is connected with well core plate, well core plate's surface fixedly connected with supplies the magnetism unit, supply magnetism unit and the crisscross setting of vortex unit.
Preferably, the vortex unit is composed of second copper plates and a first sandwich plate, and the first sandwich plate is disposed between the two second copper plates.
Preferably, the magnetic supply unit is composed of permanent magnets and a second sandwich plate, and the second sandwich plate is arranged between the two permanent magnets.
Preferably, the magnet supply unit may be further fixedly coupled to a lower surface of the first cover and an upper surface of the second cover, in which case the vortex unit is fixedly coupled to upper and lower surfaces of the center plate.
Preferably, the first end cap is configured as a flat cylinder, the second end cap is configured as a flat cylinder and the first end cap and the second end cap are concentrically arranged.
Preferably, a first through hole is formed in the center of the first end cover in a penetrating mode, and a first bearing is fixedly connected in the first through hole.
Preferably, a second through hole is formed in the center of the second end cover in a penetrating mode, and a second bearing is fixedly connected into the second through hole.
Preferably, the screw shaft is connected with a first bearing and a second bearing from top to bottom, and the first bearing and the second bearing extend to the volume compensation cavity.
Preferably, the upper end of the screw shaft is fixedly connected with a first connection terminal.
Preferably, the lower end of the volume compensation cavity is fixedly connected with a second connecting terminal.
The beneficial effects of the utility model are that, the vortex unit that can adjust and supply the magnetism unit through the group number that is provided with for the attenuator can be according to the vortex unit of the nimble suitable quantity of selection of demand in actual engineering and supply the magnetism unit, and then satisfies the engineering demand.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A of an embodiment of the present invention;
fig. 3 is a layout diagram of a permanent magnet according to an embodiment of the present invention.
Reference numbers in the figures: 1. an outer sleeve; 2. a first end cap; 3. a second end cap; 4. a screw shaft; 5. a first bearing; 6. a second bearing; 7. a volume compensation chamber; 8. a nut; 9. a center plate; 10. a first copper plate; 11. a second copper plate; 12. a first sandwich panel; 13. a second sandwich panel; 14. a permanent magnet; 15. a first connection terminal; 16. a second connection terminal; 17. an air gap.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 3, the damper includes a hollow cylindrical outer sleeve 1, and a first copper plate 10 is fixedly connected to an inner wall surface of the outer sleeve 1. A first end cap 2 is fixedly connected to the upper end surface of the outer sleeve 1, and a second end cap 3 is fixedly connected to the lower end surface of the outer sleeve 1. Wherein, the vortex unit is fixedly connected with the lower surface of the first end cover 2 and the upper surface of the second end cover 3. The eddy current unit is composed of two second copper plates 11 and a first sandwich plate 12, and the second copper plates 11 are fixedly arranged on the left side and the right side of the first sandwich plate 12 respectively, so that a group of eddy current units is formed. The vortex units are arranged in a circular ring shape, and the number of the vortex units is set according to actual engineering requirements.
Further, the first end cap 2 is configured as a flat cylinder, the second end cap 3 is configured as a flat cylinder, and the first end cap 2 and the second end cap 3 are concentrically arranged. A first through hole is formed in the circle center of the first end cover 2 in a penetrating mode, and a first bearing 5 is fixedly connected in the first through hole. A second through hole is formed in the circle center of the second end cover 3 in a penetrating mode, and a second bearing 6 is fixedly connected into the second through hole. A screw shaft 4 is fixedly connected to inner surfaces of the first bearing 5 and the second bearing 6, and the screw shaft 4 is rotatable between the first end cap 2 and the second end cap 3. And a nut 8 is also connected to the outer surface of the screw shaft 4 by screw threads. The nut 8 is disposed between the first bearing 5 and the second bearing 6, and a center plate 9 is fixedly attached to an outer surface of the nut 8. One end of the centre plate 9 extends from the nut 8 to the outer sleeve 1 and does not contact the first copper plate 10.
Further, a first connection terminal 15 is fixedly connected to an upper end of the screw shaft 4, a lower end of the screw shaft 4 is disposed inside the volume compensation chamber 7, the volume compensation chamber 7 is fixedly connected to a lower surface of the second end cap 3, and a second connection terminal 16 is also fixedly connected to a lower end of the volume compensation chamber 7.
Wherein, the outer surface of the central plate 9 is fixedly connected with a magnetic supply unit which consists of a second sandwich plate 13 and a permanent magnet 14. Two permanent magnets 14 are fixed on two sides of the second sandwich plate 13 respectively to form a group of magnetic supply units. The number of groups of magnetic units is determined according to actual engineering requirements.
Further, the magnetic supply units and the eddy current units are arranged in a staggered mode, and an air gap 17 is reserved between each group of magnetic supply units and eddy current units. When the screw shaft 4 rotates between the first bearing 5 and the second bearing 6, the central plate 9 fixedly connected to the outer surface of the nut 8 can drive the magnetic unit to rotate relative to the eddy current unit, so that eddy current can be generated, and the eddy current can generate a new magnetic field opposite to the original magnetic field in direction, so that a damping force for blocking the relative motion of the original magnetic field and the conductor is formed between the original magnetic field and the conductor, and the aim of vibration reduction is fulfilled.
The positions of the magnet unit and the eddy current unit can be freely adjusted by fixedly connecting the magnet unit to the lower surface of the first end cap 2 and the upper surface of the second end cap 3, and fixedly connecting the eddy current unit to the outer surface of the center plate 9, and changing the position of the first copper plate 10. The eddy current unit and the magnetic supply unit are still arranged in a staggered mode, so that electric eddy current can be generated in the running process of the device, and the aim of vibration reduction is achieved. Wherein the permanent magnets 14 can adopt a staggered arrangement of adjacent NS poles or Halbach magnetic poles along the circumferential direction.
It will be apparent to those skilled in the art that changes and modifications may be made to the present invention without departing from the spirit and scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A comb-tooth cup-shaped eddy current damper, comprising: set up to hollow cylinder's outer sleeve, outer sleeve internal surface fixedly connected with first copper, the first end cover of up end fixedly connected with of outer sleeve, the lower terminal surface fixedly connected with second end cover of outer sleeve first end cover with fixedly connected with vortex unit on the relative face of second end cover still includes the lead screw axle that runs through first end cover and second end cover setting, the external surface thread connection of lead screw axle has the nut the external surface fixedly connected with of nut is well core plate, well core plate's external surface fixedly connected with supplies magnetism unit, supply magnetism unit with the vortex unit is crisscross to be set up.
2. The comb-tooth cup-shaped eddy current damper according to claim 1, wherein the eddy current unit is composed of a second copper plate and a first sandwich plate, and the first sandwich plate is disposed between the two second copper plates.
3. The comb-tooth-cup-shaped eddy current damper according to claim 1, wherein the magnet supply unit is composed of permanent magnets and a second sandwich plate, and the second sandwich plate is disposed between the two permanent magnets.
4. The comb-tooth-cup-shaped eddy current damper according to claim 1, wherein the magnetic supply unit is further fixedly attached to a lower surface of the first end cap and an upper surface of the second end cap, in which case the eddy current unit is fixedly attached to an upper surface and a lower surface of the center plate.
5. The comb-toothed cup-type eddy current damper according to claim 1, wherein the first end cap is provided as a flat hollow cylinder, the second end cap is provided as a flat hollow cylinder, and the first end cap and the second end cap are concentrically provided.
6. The comb-tooth-cup-shaped eddy current damper as claimed in claim 5, wherein a first through hole is formed through a center of the first end cap, and a first bearing is fixedly connected in the first through hole.
7. The comb-tooth-shaped cup-type eddy current damper as claimed in claim 6, wherein a second through hole is formed through a center of the second end cap, and a second bearing is fixedly connected to the second through hole.
8. The comb-tooth cup-type eddy current damper according to claim 7, wherein the first bearing and the second bearing are connected to the screw shaft from top to bottom and extend to the volume compensation chamber.
9. The comb-tooth-cup-shaped eddy current damper according to claim 8, wherein a first connection terminal is fixedly connected to an upper end of the screw shaft.
10. The comb-tooth-cup-shaped eddy current damper according to claim 8, wherein a second connection terminal is fixedly connected to a lower end of the volume compensation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120527824.XU CN214465762U (en) | 2021-03-12 | 2021-03-12 | Comb-tooth-shaped cup-shaped eddy current damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120527824.XU CN214465762U (en) | 2021-03-12 | 2021-03-12 | Comb-tooth-shaped cup-shaped eddy current damper |
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| CN214465762U true CN214465762U (en) | 2021-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607062A (en) * | 2022-03-24 | 2022-06-10 | 华东交通大学 | Inertial capacity damping adjustable speed type electromagnetic eddy current inertial damper |
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2021
- 2021-03-12 CN CN202120527824.XU patent/CN214465762U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607062A (en) * | 2022-03-24 | 2022-06-10 | 华东交通大学 | Inertial capacity damping adjustable speed type electromagnetic eddy current inertial damper |
| CN114607062B (en) * | 2022-03-24 | 2023-06-06 | 华东交通大学 | Speed type electromagnetic vortex inertia damper with adjustable inertia capacity damping |
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