CN114744849A - Electromagnetic damper - Google Patents
Electromagnetic damper Download PDFInfo
- Publication number
- CN114744849A CN114744849A CN202210240347.8A CN202210240347A CN114744849A CN 114744849 A CN114744849 A CN 114744849A CN 202210240347 A CN202210240347 A CN 202210240347A CN 114744849 A CN114744849 A CN 114744849A
- Authority
- CN
- China
- Prior art keywords
- end cover
- rear end
- bearing
- electromagnetic damper
- shaft
- 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
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides an electromagnetic damper, which comprises a shell; a rotor is arranged in the shell and comprises a shaft, the shaft is connected with an I-shaped rotor cup through a key, and the shaft, the rotor cup and the key are fixed through interference pressing rings; one end of the shaft is sleeved with the front end cover assembly through a bearing, and the other end of the shaft is sleeved with the rear end cover assembly through a bearing; the one end of the bearing of being connected with the front end housing subassembly is connected with the front bearing cap through the adjusting washer, and the one end of the bearing of being connected with the rear end housing subassembly is connected with the rear bearing cap through the adjusting washer. The rotor cup adopts an I-shaped structure, so that the risk of deformation of the opening part is reduced; in order to facilitate debugging, the electromagnetic damper must be convenient to disassemble and assemble, and therefore, the structure of the damper adopts a structural form that two ends support the shell.
Description
Technical Field
The invention relates to an electromagnetic damper, and belongs to the technical field of design and manufacture of aerospace motors.
Background
Two spacecrafts can produce very big impact energy when the space rendezvous and docking, need to consume the energy that produces through the power consumption device in the rendezvous and docking process and accomplish smoothly.
The electromagnetic damper is a special permanent magnet cup-shaped armature motor, when the motor is electrified, current flows through a winding under the action of an electric brush and a commutator, and interacts with a magnetic field generated by a rare earth permanent magnet to generate electromagnetic torque, so that the motor starts to rotate. However, as for the electromagnetic damper, the passive energy dissipation device is provided, the rotor cup (armature cup) is made of metal with good electrical conductivity, when the prime mover drags the electromagnetic damper to rotate, the metal rotor cup cuts the stator magnetic field to induce eddy current in the cup, the eddy current interacts with the magnetic field to generate damping torque, the higher the rotating speed is, the larger the induced eddy current is, and the rotating speed and torque characteristics of the electromagnetic damper basically have a linear trend. Under the same condition, the electrical resistivity of different rotor cup materials and lengths is different, the generated torque is also different, and the slope of the rotating speed and torque characteristics is changed along with the change of the electrical resistivity of the rotor cup materials and the lengths. As shown in fig. 1, since eddy current generates heat in the rotor, increases armature resistance, suppresses eddy current, and reduces torque to some extent, the damping torque characteristic is slightly curved downward with an increase in the rotation speed, and the linearity of the characteristic is affected to some extent. Therefore, after the damper is machined, a magnetic field, a rotor cup material, the outer diameter size and the like are all solidified, the damping torque of the damper can be different, the damping torque needs to be debugged, only the length of the rotor cup is adjusted to change the damping torque, and considering that the rotor cup is a thin-wall part and is long, the mouth part of the rotor cup can deform to cause the risk of sweeping the chamber of the damper, so that the electromagnetic damper capable of reducing the risk of deformation of the mouth part and facilitating debugging is urgently needed.
Disclosure of Invention
In order to solve the technical problems, the invention provides an electromagnetic damper which adopts a structural form similar to a permanent magnet coreless motor, designs an I-shaped metal cup rotor, consumes the energy generated when two spacecrafts are in rendezvous and butt joint in space, solves the problem of energy disposal generated in the rendezvous and butt joint process of the two spacecrafts, and effectively reduces the volume and the weight of the electromagnetic damper.
The invention is realized by the following technical scheme.
The invention provides an electromagnetic damper, which comprises a machine shell and a rotor arranged in the machine shell, wherein the rotor is supported by bearings of a front end cover assembly and a rear end cover assembly to rotate; the rotor comprises a shaft, the shaft is connected with an I-shaped rotor cup through a key, and the shaft, the rotor cup and the key are fixed through interference pressing rings; one end of the shaft is sleeved with the front end cover assembly through a bearing, and the other end of the shaft is sleeved with the rear end cover assembly through a bearing.
The electromagnetic damper is of a self-contained structure.
The shaft is provided with a key groove, and the key is arranged in the key groove.
The interference pressing ring is welded with the shaft through laser.
The front end cover assembly is connected with the shell through a second screw, and the rear end cover assembly is connected with the shell through a fifth screw; and a temperature measuring and controlling screw is arranged on one side of the shell.
The front end cover assembly, the rear end cover assembly and the shell are positioned by adopting rabbets, the polarity of first magnetic steel of the end cover assembly is consistent with the polarity of second magnetic steel of the rear end cover assembly in spatial position, and the N polarity of the first magnetic steel corresponds to the N polarity of the second magnetic steel.
The front end housing subassembly includes the front end housing, and it has first group magnet steel to bond on one side excircle of front end housing, and the N, S equipartition in turn of first magnet steel bonds on the excircle of front end housing, in the N, S position between in turn of first magnet steel, installs first magnetic pole baffle to fasten on the front end housing with the third screw.
The rear end cover assembly comprises a rear end cover, a second group of magnetic steels are bonded on the excircle of one side of the rear end cover, N, S of the second magnetic steels are uniformly and alternately bonded on the excircle of the rear end cover, second magnetic pole partition plates are mounted at positions between N, S of the second magnetic steels in an alternating mode, and the second magnetic pole partition plates are fastened on the rear end cover through fourth screws.
The front bearing cover is fixed with the front end cover assembly through a first screw, and the rear bearing cover is fixed with the rear end cover assembly through a first screw.
The one end of the bearing of being connected with the front end housing subassembly is connected with the front bearing cap through the adjusting washer, and the one end of the bearing of being connected with the rear end housing subassembly is connected with the rear bearing cap through the adjusting washer.
The invention has the beneficial effects that: the rotor cup adopts an I-shaped structure, so that the risk of deformation of the mouth part is reduced; in order to facilitate debugging, the electromagnetic damper must be convenient to disassemble and assemble, and therefore, the structure of the damper adopts a structural form that two ends support the shell.
Drawings
FIG. 1 is a graph of damping torque characteristics;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the construction of the rotor of the present invention;
FIG. 4 is a schematic structural view of the front end cap assembly of the present invention;
FIG. 5 is a schematic structural view of the rear endcap assembly of the present invention;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;
in the figure: 1-front bearing cover, 2-bearing, 3-first screw, 4-second screw, 5-gasket, 6-front end cover component, 61-front end cover, 62-first magnetic pole clapboard, 63-third screw, 64-first magnetic steel, 7-rotor, 71-shaft, 72-rotor cup, 73-key, 74-interference pressing ring, 8-rear end cover component, 81-rear end cover, 82-second magnetic pole clapboard, 83-fourth screw, 84-second magnetic steel, 9-machine shell, 10-fifth screw, 11-rear bearing cover, 12-adjusting gasket, 13-temperature measurement control screw.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 to 7, an electromagnetic damper includes a casing 9, a rotor 7, a front end cover assembly 6, and a rear end cover assembly 8, where the casing 9 is connected to the front end cover assembly 6 by a screw 4, and connected to the rear end cover assembly 8 by a screw 10, and the rotor 7 is supported by bearings of the front end cover assembly 6 and the rear end cover assembly 8 to rotate; the rotor 7 comprises a shaft 71, the shaft 71 is connected with an I-shaped rotor cup 72 through a key 73, and the shaft 71, the rotor cup 72 and the key 73 are fixed through an interference pressing ring 74; one end of the shaft 71 is sleeved with a front end cover assembly 6 through a bearing 2, and the other end of the shaft is sleeved with a rear end cover assembly 8 through the bearing 2; one end of the bearing 2 connected with the front end cover assembly 6 is connected with a front bearing cover 1 through an adjusting gasket 12, and one end of the bearing 2 connected with the rear end cover assembly 8 is connected with a rear bearing cover 11 through an adjusting gasket 12.
The electromagnetic damper is of a self-contained structure.
The shaft 71 is provided with a keyway in which a key 73 is mounted.
The interference pressing ring 74 is welded to the shaft 71 by laser.
The front end cover assembly 6 is connected with the machine shell 9 through a second screw 4, and the rear end cover assembly 8 is connected with the machine shell 9 through a fifth screw 10.
Front end housing assembly 6 and rear end housing assembly 8 all adopt the tang location with casing 9 between, the first magnet steel 64 polarity of end housing assembly 6 is unanimous at spatial position with the second magnet steel 84 polarity of rear end housing assembly 8, and the N polarity of first magnet steel 64 corresponds with the N polarity of second magnet steel 84.
The front end cover assembly 6 comprises a front end cover 61, a first magnetic steel 64 is bonded on the excircle of one side of the front end cover 61, N, S of the first magnetic steel 64 are uniformly and alternately bonded on the excircle of the front end cover 61, and as shown in fig. 4, a first magnetic pole partition plate 62 is mounted at the position between N, S of the first magnetic steel 64 in an alternating mode and is fastened on the front end cover 61 through a third screw 63, so that the bonding reliability of the first magnetic steel 64 is strengthened, and the first magnetic steel 64 is protected from being damaged easily.
Rear end cap subassembly 8 includes rear end cap 81, and it has second magnet steel 84 to bond on one side excircle of rear end cap 81, and N, S equipartition in turn of second magnet steel 84 bonds on rear end cap 81's excircle, and fig. 5 shows, in N, S position between in turn of second magnet steel 84, installation second magnetic pole baffle 82 to fasten on rear end cap 81 with fourth screw 83, both strengthened second magnet steel 84 bonding reliability, also protected the difficult damage of second magnet steel.
The front bearing cover 1 is fixed with the front end cover assembly 6 through the first screws 3, and the rear bearing cover 11 is fixed with the rear end cover assembly 8 through the first screws 3.
And a temperature measuring and controlling screw 13 is arranged on one side of the machine shell 9.
The invention is arranged in the spacecraft docking mechanism, when two spacecrafts are docked in space in a rendezvous manner, the docking mechanism converts linear impact force generated in the rendezvous and docking process into rotary torque to be transmitted to the electromagnetic damper, and the electromagnetic damper absorbs and consumes energy generated by a transmission buffer system in the docking process.
Examples
As shown in fig. 2, the electromagnetic damper of the present invention is a self-contained type, and the electromagnetic damper is composed of a casing 9, a front end cover assembly 6, a rear end cover assembly 8, a rotor 7, a bearing 2, etc., wherein the casing 9 and the front end cover assembly 6 of the magnetic damper are positioned by a seam allowance and fastened by a second screw 4, and a gasket 5 is arranged between the second screw 4 and the front end cover assembly 6; a sleeve tool is used for rotating the rotor 7 into the shell 9, then the rear end cover assembly 8 is installed, the rear end cover assembly 8 and the shell 9 are positioned by adopting a seam allowance and are fastened by a fifth screw 10; the rotor 7 is supported in the bearing chambers of the front and rear end cover assemblies through two bearings 2, front and rear bearing covers are installed at two ends of the bearings, and the axial clearance of the damper is adjusted through an adjusting washer 12.
As shown in fig. 3, the rotor is composed of a shaft 71, a rotor cup 72, a key 73 and an interference pressing ring 74, the key is firstly installed in a key slot of the shaft, the rotor cup is installed on the shaft and the key slot, and then the rotor cup is fixed through the interference pressing ring and is subjected to anti-loose processing by laser welding.
As shown in fig. 4 and 6, the front end cover assembly is composed of a front end cover 61, a first magnetic pole partition plate 62, a third screw 63 and a first magnetic steel 64, the first magnetic steel 64 is bonded to the front end cover 61 through glue, and the first magnetic pole partition plate 62 is fixed to the front end cover 61 through the third screw 63, so that the first magnetic steel 64 is fastened, and the first magnetic steel 64 is prevented from rotating.
As shown in fig. 5 and 7, the rear end cover assembly is composed of a rear end cover 81, a second magnetic pole partition plate 82, a fourth screw 83, and a second magnetic steel 84, the second magnetic steel 84 is bonded to the rear end cover 81 by glue, and the second magnetic pole partition plate 82 is fixed to the rear end cover 81 by the fourth screw 83, so that the second magnetic steel 84 is fastened, and the second magnetic steel 84 is prevented from rotating.
It can be understood that the characteristics of the damper are related to the rotating speed of the motor, the magnetic field, the material and the size of the rotor cup, therefore, after the damper is processed, the magnetic field, the material of the rotor cup, the outer diameter and the like are solidified, the damping torque of the damper is different, the damping torque is required to be debugged, and the damping torque is changed only by adjusting the length of the rotor cup. Considering that the rotor cup is a thin-walled part and is long, and the mouth part of the rotor cup can deform to cause the risk of sweeping the chamber of the damper, the invention designs the electromagnetic damper structure of the rotor of the I-shaped metal cup by adopting a structural form similar to a permanent magnet coreless motor, and the rotor cup adopts an I shape during design to reduce the risk of deformation of the mouth part; in order to facilitate debugging, the electromagnetic damper must be convenient to disassemble and assemble, and therefore, the structure of the damper adopts a structural form that two ends support the shell.
In conclusion, the electromagnetic butt joint damping system can absorb and consume energy generated by the transmission buffer system in the butt joint process, so that the cross-joint process is stable; the working principle of the electromagnetic damper can be utilized to construct an electromagnetic damper loading system, so that the loading test of the dragging motor and the performance test of the simulation test of the space actuating mechanism are realized.
Claims (10)
1. An electromagnetic damper comprising a casing (9) and a rotor (7) disposed within the casing (9), characterized in that: the rotor (7) is supported by bearings of the front end cover assembly (6) and the rear end cover assembly (8) to rotate; the rotor (7) comprises a shaft (71), the shaft (71) is connected with an I-shaped rotor cup (72) through a key (73), and the shaft (71), the rotor cup (72) and the key (73) are fixed through an interference pressing ring (74); one end of the shaft (71) is sleeved with the front end cover component (6) through the bearing (2), and the other end of the shaft is sleeved with the rear end cover component (8) through the bearing (2).
2. The electromagnetic damper of claim 1, wherein: the electromagnetic damper is of a self-contained structure.
3. The electromagnetic damper of claim 1, wherein: a key groove is formed in the shaft (71), and the key (73) is installed in the key groove.
4. The electromagnetic damper of claim 1, wherein: the interference pressing ring (74) is welded with the shaft (71) through laser.
5. The electromagnetic damper of claim 1, wherein: the front end cover assembly (6) is connected with the shell (9) through a second screw (4), and the rear end cover assembly (8) is connected with the shell (9) through a fifth screw (10); and a temperature measuring and controlling screw (13) is installed on one side of the machine shell (9).
6. The electromagnetic damper of claim 1, wherein: front end housing assembly (6) and rear end cap subassembly (8) all adopt the tang location with casing (9) between, the first magnet steel (64) polarity of end cap subassembly (6) is unanimous at spatial position with second magnet steel (84) polarity of rear end cap subassembly (8), and first magnet steel (64) N polarity corresponds with second magnet steel (84) N polarity.
7. The electromagnetic damper of claim 1, wherein: the front end cover assembly (6) comprises a front end cover (61), first magnetic steel (64) is bonded on the excircle of one side of the front end cover (61), N, S of the first magnetic steel (64) are uniformly and alternately bonded on the excircle of the front end cover (61), a first magnetic pole partition plate (62) is mounted at the position between N, S of the first magnetic steel (64) in an alternating mode, and a third screw (63) is fastened on the front end cover (61).
8. The electromagnetic damper of claim 1, wherein: rear end cap subassembly (8) include rear end cap (81), and it has second magnet steel (84) to bond on one side excircle of rear end cap (81), and the N, S equipartition in turn of second magnet steel (84) bonds on the excircle of rear end cap (81), in the position between N, S in turn of second magnet steel (84), installation second magnetic pole baffle (82) to fasten on rear end cap (81) with fourth screw (83).
9. The electromagnetic damper of claim 1, wherein: the front bearing cover (1) is fixed with the front end cover assembly (6) through a first screw (3), and the rear bearing cover (11) is fixed with the rear end cover assembly (8) through the first screw (3).
10. The electromagnetic damper of claim 1, wherein: one end of the bearing (2) connected with the front end cover assembly (6) is connected with the front bearing cover (1) through an adjusting gasket (12), and one end of the bearing (2) connected with the rear end cover assembly (8) is connected with the rear bearing cover (11) through the adjusting gasket (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210240347.8A CN114744849A (en) | 2022-03-10 | 2022-03-10 | Electromagnetic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210240347.8A CN114744849A (en) | 2022-03-10 | 2022-03-10 | Electromagnetic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114744849A true CN114744849A (en) | 2022-07-12 |
Family
ID=82274570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210240347.8A Pending CN114744849A (en) | 2022-03-10 | 2022-03-10 | Electromagnetic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114744849A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202282721U (en) * | 2011-11-08 | 2012-06-20 | 东阳市东政电机有限公司 | Non-contact damping device used in motor |
| CN206259765U (en) * | 2016-11-07 | 2017-06-16 | 中海油能源发展股份有限公司 | A kind of high speed non-stator iron core magneto of end portion leakage field |
| CN206992820U (en) * | 2017-04-21 | 2018-02-09 | 康富科技股份有限公司 | A kind of cylindrical shape drag cup rotor |
| CN108494180A (en) * | 2018-05-31 | 2018-09-04 | 东莞市领亚自动化科技有限公司 | A kind of hollow-cup motor |
| CN113357299A (en) * | 2021-06-23 | 2021-09-07 | 贵州航天林泉电机有限公司 | Eddy current damper with axial double-reed structure |
| CN214788737U (en) * | 2021-03-15 | 2021-11-19 | 华东交通大学 | double-I-shaped combined eddy current damper |
-
2022
- 2022-03-10 CN CN202210240347.8A patent/CN114744849A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202282721U (en) * | 2011-11-08 | 2012-06-20 | 东阳市东政电机有限公司 | Non-contact damping device used in motor |
| CN206259765U (en) * | 2016-11-07 | 2017-06-16 | 中海油能源发展股份有限公司 | A kind of high speed non-stator iron core magneto of end portion leakage field |
| CN206992820U (en) * | 2017-04-21 | 2018-02-09 | 康富科技股份有限公司 | A kind of cylindrical shape drag cup rotor |
| CN108494180A (en) * | 2018-05-31 | 2018-09-04 | 东莞市领亚自动化科技有限公司 | A kind of hollow-cup motor |
| CN214788737U (en) * | 2021-03-15 | 2021-11-19 | 华东交通大学 | double-I-shaped combined eddy current damper |
| CN113357299A (en) * | 2021-06-23 | 2021-09-07 | 贵州航天林泉电机有限公司 | Eddy current damper with axial double-reed structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8841809B2 (en) | Synchronous brushless multipolar machine having immobile armature and field windings | |
| WO1998044620A1 (en) | Permanent magnet generator | |
| GB2490972A (en) | Dual rotor axial flux electrical machines with internal bearing assembly | |
| CN111865027A (en) | High-frequency high-rotation-speed swing motor and implementation method thereof | |
| CN114744849A (en) | Electromagnetic damper | |
| CN107492998A (en) | Double-stator Permanent Magnet Synchronous Motor | |
| WO2001050139A3 (en) | Galvanometer with axial symmetry and improved bearing design | |
| CN208461599U (en) | A kind of New-type electric machine bearing denoising device | |
| CN201336588Y (en) | Shellless brushless DC motor | |
| CN209844801U (en) | Double-stator magnetic field permanent magnet direct current coreless motor | |
| CN101420151A (en) | Shielding pump having axial directional permanent magnetic pulling force disk | |
| CN109660076B (en) | Brushless motor for automobile EPS | |
| CN112217324A (en) | Improved structure of coreless motor | |
| CN220398746U (en) | Temperature monitoring device of axial magnetic field joint motor | |
| CN111463991A (en) | Novel sound wave motor and implementation method thereof | |
| CN207184290U (en) | Double-stator Permanent Magnet Synchronous Motor | |
| CN217769757U (en) | Brushless permanent magnet direct current motor | |
| CN212605406U (en) | Power-assisted steering device driven by outer rotor rotary brushless motor | |
| CN111102292A (en) | Magnetic suspension bearing assembly, outer rotor motor assembly and motor | |
| CN100405711C (en) | Rare earth permanent magnet brushless DC motor for dentistry chair seat | |
| CN213185720U (en) | Coreless rotor motor | |
| CN115589089B (en) | Magnetic suspension disc type motor | |
| CN211744222U (en) | Vibration motor | |
| JP2007037357A (en) | Three pole dc motor with power generation function of homopolar machine assistance | |
| CN110676997A (en) | Permanent magnet generator with positive and negative double rotors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220712 |
|
| RJ01 | Rejection of invention patent application after publication |