CN106594140A - Novel electromagnetic damper - Google Patents
Novel electromagnetic damper Download PDFInfo
- Publication number
- CN106594140A CN106594140A CN201710118577.6A CN201710118577A CN106594140A CN 106594140 A CN106594140 A CN 106594140A CN 201710118577 A CN201710118577 A CN 201710118577A CN 106594140 A CN106594140 A CN 106594140A
- Authority
- CN
- China
- Prior art keywords
- rotor
- stator
- electromagnetic damper
- end cover
- permanent magnets
- 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.)
- Pending
Links
- 230000003068 static effect Effects 0.000 claims abstract description 5
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 5
- 230000004907 flux Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention belongs to the technical field of mechanical and building accessories, and concretely relates to a novel electromagnetic damper. The electromagnetic damper is mainly characterized by comprising a cylindrical stator and a rotor sleeving and connecting with the cylindrical stator, which are concentric. The rotor is connected with the stator through a front pillow block bearing and a rear pillow block bearing; a front end cover and a rear end cover are arranged on two ends of the stator so as to form a cavity; a screw rod is arranged in an axis of the rotor; a dynamic connection head is arranged on one end of the screw rod; the other end of the screw rod penetrates through the rotor so as to stretch into the cavity; an axial movement of the screw rod causes the autorotation of the rotor; a through hole for the screw rod to penetrate through is formed in the center of the front end cover; a static connection head is arranged on the rear end cover; a plurality of clamping slots for fixing closing coils are uniformly distributed on an inner wall of the stator; one or more bar-type permanent magnets are arranged on a surface of the rotor; and magnetic lines of the permanent magnets are nonuniformly distributed along the axis of the rotor. The electromagnetic damper has the characteristics of long service life and good damping effect.
Description
Technical Field
The invention belongs to the technical field of machinery and building accessories, and particularly relates to a novel electromagnetic damper.
Background
The damper is an important device which is widely applied to industries such as machinery, buildings and the like to realize the damping function. The existing damper mainly comprises a damping cylinder, a damping rod, a damping piston and damping liquid. The service life of the damping liquid is short, and the bearing force is limited, so that the conventional damper is short in service life, and the application occasions are limited, so that the damper cannot be used in large-damping occasions.
Disclosure of Invention
The invention aims to provide a novel electromagnetic damper with long service life and good damping effect.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a novel electromagnetic damper comprises a coaxial cylindrical stator and a rotor which is sleeved and connected, wherein the rotor is connected with the stator through a front bearing and a rear bearing with a seat, and a cavity is formed by arranging a front end cover and a rear end cover at two ends of the stator;
a lead screw is arranged at the axis of the rotor, a movable connector is arranged at one end of the lead screw, the other end of the lead screw penetrates through the rotor and extends into the cavity, and the axial movement of the lead screw causes the rotation of the rotor;
the center of the front end cover is provided with a through hole for the lead screw to pass through; the rear end cover is provided with a static connector;
the method is characterized in that: the inner wall of the stator is provided with a plurality of clamping grooves which are uniformly distributed and used for fixing the closed coil, one or more strip-shaped permanent magnets are arranged on the surface of the rotor, and magnetic lines of force of the permanent magnets are non-uniformly distributed along the axis of the rotor.
The additional technical characteristics of the novel electromagnetic damper further comprise that:
-the closing coil is connected to a dissipative resistor;
-the magnetic poles of the bar permanent magnets are parallel to the rotor axis;
the magnetic poles of the strip-shaped permanent magnets are located in a vertical plane of the rotor axial lead.
Compared with the prior art, the novel electromagnetic damper provided by the invention has the following advantages: firstly, as the axis of the rotor of the electromagnetic damper is provided with the lead screw, one end of the lead screw is provided with the movable connector, and the other end of the lead screw penetrates through the rotor and extends into the cavity, the axial motion of the lead screw causes the rotation of the rotor, so that the axial vibration of the lead screw can be effectively converted into the circular motion of the damper rotor, and the damping effect on the lead screw by controlling the rotation of the rotor is realized; secondly, because the inner wall of the stator of the electromagnetic damper is provided with a plurality of clamping grooves which are uniformly distributed and used for fixing the closed coil, the surface of the rotor is provided with one or more strip-shaped permanent magnets, and the magnetic lines of force of the permanent magnets are non-uniformly distributed along the axis of the rotor, the magnetic flux in the closed coil on the stator continuously changes in the rotor rotation process to generate induction current, the magnetic field excited by the induction current prevents the rotor from rotating to further form braking force on the screw rod, the permanent magnets and the coils are not in contact in the damping process, no abrasion is generated, and the electromagnetic damper has the characteristic of long service life; thirdly, because the closed coil of the electromagnetic damper is connected with the energy dissipation resistor, the mechanical energy of vibration can be quickly converted into heat energy to be consumed, the energy conversion efficiency is improved, and the damping effect is better particularly when high-frequency vibration or large braking force is needed; fourthly, because the permanent magnetism iron magnetic pole of this electromagnetic damper both can be parallel with rotor axial lead and also can lie in the vertical plane of rotor axial lead, as long as when satisfying the rotor rotation, the magnetic flux in the closed coil on the stator changes, consequently has the manifold characteristics of structure, the suitability is strong, installation convenient to use.
Drawings
FIG. 1 is a schematic cross-sectional view of a novel electromagnetic damper according to the present invention;
FIG. 2 is a side view of the electromagnetic damper with the permanent magnets fixed to the rotor cross-section;
FIG. 3 is a side view of the electromagnetic damper with the permanent magnet fixed to the axial surface of the rotor;
FIG. 4 is a magnetic pole distribution diagram of the electromagnetic damper with the permanent magnets arranged as in FIG. 3;
fig. 5 is a magnetic pole distribution diagram of the electromagnetic damper in which the permanent magnets are arranged as in fig. 2.
Detailed Description
The structure and the working principle of the novel electromagnetic damper provided by the invention are further described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a novel electromagnetic damper provided by the present invention. The structure of the novel electromagnetic damper comprises a coaxial cylindrical stator 1 and a rotor 2 which is connected in a sleeved mode, wherein the rotor 2 is connected with the stator 1 through front and rear bearings (31 and 32) with seats, and front and rear end covers (41 and 41) are arranged at two ends of the stator 1 to form a cavity 43;
a lead screw 5 is arranged at the axis of the rotor 2, a movable connector 61 is arranged at one end of the lead screw 5, the other end of the lead screw 5 penetrates through the rotor 2 and extends into the cavity 43, and the axial movement of the lead screw 5 causes the rotation of the rotor 2;
the center of the front end cover 31 is provided with a through hole 7 for the lead screw 5 to pass through, and the rear end cover 42 is provided with a static connector 62;
the inner wall of the stator 1 is provided with a plurality of clamping grooves 9 which are uniformly distributed and used for fixing the closed coil 8, one or more strip-shaped permanent magnets 10 are arranged on the surface of the rotor 2, and the magnetic lines of force of the permanent magnets 10 are non-uniformly distributed along the axis of the rotor 2.
The working principle is as follows: the static connector 62 of the electromagnetic damper is connected with the fixed end, the movable connector 61 at the outer end of the lead screw 5 is connected with the vibration end, the vibration enables the lead screw 5 to generate axial movement, the rotor 2 connected with the lead screw 5 generates autorotation, the permanent magnet 10 on the rotor 2 rotates along with the autorotation, and because the magnetic lines of force of the permanent magnet 10 are unevenly distributed along the axis of the rotor 2, the magnetic flux in the closed coil 8 fixed by the clamping groove 9 on the inner wall of the stator 1 continuously changes to generate induction current, and the magnetic field excited by the induction current prevents the rotor 2 from autorotation to further form braking force to the.
In the structure constituting the above-described new electromagnetic damper,
in order to realize the purpose of quickly converting the mechanical energy of the vibration into the heat energy to be consumed and improve the energy conversion efficiency, the closed coil 8 is connected with the energy dissipation resistor 11, and the damping effect is better particularly when high-frequency vibration is encountered;
as shown in fig. 2 and 3, the plurality of permanent bar magnets 10 on the rotor 2 may be arranged in various ways, for example, parallel to the axial center line of the rotor 2, that is, the permanent bar magnets are fixed in the grooves 12 on the outer surface of the rotor 2 in the axial direction; or in the vertical plane of the axial lead of the rotor 2, namely, the strip permanent magnet 10 is fixed in the groove 12 of the radial cross section of the rotor 2;
the magnetic poles of the permanent bar magnets 10 on the rotor 2 may also be arranged in various ways, for example, when the permanent bar magnets 10 are fixed in the grooves 12 on the outer surface of the rotor 2 in the axial direction, one end of the rotor 2 in the axial direction may be N-level, or N-level and S-level are alternately and uniformly arranged (as shown in fig. 4); when the strip permanent magnets 10 are fixed in the grooves 12 in the radial direction of the cross section of the rotor 2, the radial outer ends of the rotor 2 can be N-level, or N-level and S-level are alternately and uniformly arranged (as shown in FIG. 5);
the arrangement of the permanent magnet 10 and the magnetic poles is not limited to the specific mode listed above, and the magnetic flux in the closed coil 8 on the stator 1 can be changed when the rotor 2 rotates, so that the permanent magnet has the characteristics of variable structure, strong applicability, and convenient installation and use.
Claims (4)
1. A novel electromagnetic damper is characterized in that:
comprises a cylindrical stator with the same axle center and a rotor which is sleeved and connected; wherein,
the rotor is connected with the stator through a front bearing with a seat and a rear bearing with a seat, and a front end cover and a rear end cover are arranged at two ends of the stator to form a cavity;
a lead screw is arranged at the axis of the rotor, a movable connector is arranged at one end of the lead screw, the other end of the lead screw penetrates through the rotor and extends into the cavity, and the axial movement of the lead screw causes the rotation of the rotor;
the center of the front end cover is provided with a through hole for the lead screw to pass through; the rear end cover is provided with a static connector; and is
The inner wall of the stator is provided with a plurality of clamping grooves which are uniformly distributed and used for fixing the closed coil, one or more strip-shaped permanent magnets are arranged on the surface of the rotor, and magnetic lines of force of the permanent magnets are non-uniformly distributed along the axis of the rotor.
2. A novel electromagnetic damper, as claimed in claim 1, wherein: the closed coil is connected with the energy dissipation resistor.
3. A novel electromagnetic damper, as claimed in claim 1, wherein: and the magnetic poles of the strip permanent magnets are parallel to the axial lead of the rotor.
4. A novel electromagnetic damper, as claimed in claim 1, wherein: and the magnetic poles of the strip permanent magnets are positioned in a vertical plane of the axial lead of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710118577.6A CN106594140A (en) | 2017-03-01 | 2017-03-01 | Novel electromagnetic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710118577.6A CN106594140A (en) | 2017-03-01 | 2017-03-01 | Novel electromagnetic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106594140A true CN106594140A (en) | 2017-04-26 |
Family
ID=58588234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710118577.6A Pending CN106594140A (en) | 2017-03-01 | 2017-03-01 | Novel electromagnetic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594140A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007478A (en) * | 2017-12-13 | 2018-05-08 | 中国船舶重工集团公司第七0七研究所 | Electromagnetic damper |
| CN109780109A (en) * | 2019-03-07 | 2019-05-21 | 梁军 | Electromagnetic damper structure and electromagnetic damper |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0610989A (en) * | 1992-06-24 | 1994-01-21 | Mitsubishi Heavy Ind Ltd | Electromagnetic damper |
| CN101944821A (en) * | 2010-09-26 | 2011-01-12 | 浙江大学 | Permanent-magnet damping linear generator |
| CN203770500U (en) * | 2014-02-28 | 2014-08-13 | 同济大学 | Self-control electromagnetic damper |
| CN105317899A (en) * | 2015-12-11 | 2016-02-10 | 北京邮电大学 | Linear electromagnetic damper with thread structure |
| CN105391270A (en) * | 2015-12-23 | 2016-03-09 | 苏州市凯业金属制品有限公司 | Self-adaptive magnetic damper |
| CN106402228A (en) * | 2016-11-30 | 2017-02-15 | 浙江建科减震科技有限公司 | Electromagnetic eddy rotating damper |
| CN206487814U (en) * | 2017-03-01 | 2017-09-12 | 河北宝力工程装备股份有限公司 | A kind of electromagnet damper |
-
2017
- 2017-03-01 CN CN201710118577.6A patent/CN106594140A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0610989A (en) * | 1992-06-24 | 1994-01-21 | Mitsubishi Heavy Ind Ltd | Electromagnetic damper |
| CN101944821A (en) * | 2010-09-26 | 2011-01-12 | 浙江大学 | Permanent-magnet damping linear generator |
| CN203770500U (en) * | 2014-02-28 | 2014-08-13 | 同济大学 | Self-control electromagnetic damper |
| CN105317899A (en) * | 2015-12-11 | 2016-02-10 | 北京邮电大学 | Linear electromagnetic damper with thread structure |
| CN105391270A (en) * | 2015-12-23 | 2016-03-09 | 苏州市凯业金属制品有限公司 | Self-adaptive magnetic damper |
| CN106402228A (en) * | 2016-11-30 | 2017-02-15 | 浙江建科减震科技有限公司 | Electromagnetic eddy rotating damper |
| CN206487814U (en) * | 2017-03-01 | 2017-09-12 | 河北宝力工程装备股份有限公司 | A kind of electromagnet damper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007478A (en) * | 2017-12-13 | 2018-05-08 | 中国船舶重工集团公司第七0七研究所 | Electromagnetic damper |
| CN109780109A (en) * | 2019-03-07 | 2019-05-21 | 梁军 | Electromagnetic damper structure and electromagnetic damper |
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Application publication date: 20170426 |