CN207579444U - It is a kind of can magnetisation can demagnetization idler wheel - Google Patents
It is a kind of can magnetisation can demagnetization idler wheel Download PDFInfo
- Publication number
- CN207579444U CN207579444U CN201721667042.6U CN201721667042U CN207579444U CN 207579444 U CN207579444 U CN 207579444U CN 201721667042 U CN201721667042 U CN 201721667042U CN 207579444 U CN207579444 U CN 207579444U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- wheel
- idler wheel
- iron tyre
- magnetisation
- 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.)
- Active
Links
Landscapes
- Electric Suction Cleaners (AREA)
Abstract
The utility model is related to it is a kind of can magnetisation can demagnetization idler wheel, including wheel hub, iron tyre body one, iron tyre body two, magnetic isolation plate, every magnetic magnetic receiver, permanent magnet, dustproof cover and dial torsional handle;Iron tyre body one, magnetic isolation plate, iron tyre body two form the wheel body of idler wheel, are placed in the spherical groove of wheel body every magnetic magnetic receiver, permanent magnet is arranged in every in magnetic magnetic receiver;The side of wheel body sets wheel hub for connect with the shaft of mobile equipment, and the opposite side of wheel body sets dustproof cover, and allocating slot is radially opened up in the middle part of dustproof cover, dial torsional handle one end pass through allocating slot after connect every magnetic magnetic receiver;The magnetic line of force in idler wheel described in the utility model, which has, is connected and disconnects 2 kinds of states, make idler wheel that there can either be magnetic and without switching between magnetic two states, so as to the simpler safety of process that mobile equipment is made to place and remove on ferromagnetic metal surface, while the ferromagnetic sundries that can be adsorbed to roller surface are quickly cleared up;Roller structure is simple, and mounting and adjusting is convenient, and use is reliable and stable.
Description
Technical field
The utility model is related to a kind of magnetic rollers more particularly to it is a kind of can magnetisation can demagnetization idler wheel.
Background technology
Common industrial detection scanner, welding robot, surface cleaning machines people or other in ferromagnetic metal
When the mobile equipment of surface walking work moves on ferromagnetic metal surface, adsorbed frequently with magnetic rollers in ferromagnetic metal table
Face.Conventional magnetic rollers are using the structure (as shown in Fig. 1 a, 1b) that permanent magnet 2 is placed in iron tyre body 1, this magnetic rolling
The structure of wheel is simple, but since the surface magnetism of magnetic rollers is very strong, easily ferromagnetic metal surface is not cleaned out
Iron filings and iron rust magnetization after be adsorbed onto on magnetic rollers, magnetic rollers is made to be obstructed or even walk in walking interruption, are affected
The normal work of mobile equipment.
Chinese patent application No. is 201710447139.4 discloses a kind of " permanent magnetic wheels of adjustable magnetic force ", " packet
Wheel assembly in one, an outer wheel assembly and a circumferential position limiting structure are included, the outer wheel assembly, which is rotationally arranged, to be fixed in described
Outside wheel assembly, the circumferential direction position limiting structure is used to circumferentially limit the interior wheel assembly and the outer wheel assembly;The lubrication groove group
Part includes permanent magnet and the second magnetic isolating segment;The outer wheel assembly include multiple first magnetic isolating segments and multiple permeable segments, described first
Circumferentially-spaced distribution of the magnetic isolating segment along the outer wheel assembly is embedded with described in one between every two adjacent first magnetic isolating segments and leads
Magnetic section, and first magnetic isolating segment and the permeable segments cooperatively form an outer wheel body." its purpose of utility model is according to live need
Adjust permanent magnetic wheels magnetic force.But from its structural analysis, now the difficulty of purpose of utility model is larger in fact.The reason is as follows that:1) outside
The first magnetic isolating segment and permeable segments are equipped at intervals on wheel assembly, the first magnetic isolating segment is permanent non-magnetic, and uses magnetic rollers
Mobile equipment needs tightly to adsorb with ferromagnetic metal surface always during traveling, and magnetic rollers and ferromagnetic metal table
Face is contacted for line, it is contemplated that when the first magnetic isolating segment runs to the position contacted with ferromagnetic metal surface, magnetic rollers will
Adsorption capacity is lost, if traveling on vertical faces, then moving equipment can directly fall;2) its adjusting method is:When
When adjusting the state to the first magnetic isolating segment and the alignment of the second magnetic isolating segment, the external magnetic force of permanent magnetic wheels that magnetic force is adjusted is maximum;As general
When first magnetic isolating segment is adjusted to permanent magnet, the external magnetic force of permanent magnetic wheels that magnetic force is adjusted reduces;But in no other tune
In the case of saving mechanism, since the contact area of permanent magnet and magnetic conduction magnetic is larger, adsorption capacity is very strong, circumferentially adjusts foreign steamer group
The relative position of part and interior wheel assembly is very difficult;3) record that " the two poles of the earth of permanent magnet are along interior wheel body diameter in its specification
To setting, and the magnetic pole of adjacent permanent magnet is oppositely arranged ", when permanent magnet rotating is to the position being aligned with the first magnetic isolating segment, forever
N poles, the S poles of magnet are connected respectively by permeable segments with lubrication groove cylinder, and magnetic line of force forming circuit, then the outer surface of idler wheel will not have magnetic
Property.Therefore, the adjusting of magnetic force can not be realized, at least magnetic force is not that LINEAR CONTINUOUS is adjustable.
Invention content
The utility model provide it is a kind of can magnetisation can demagnetization idler wheel, the magnetic line of force in the idler wheel has conducting and disconnected
2 kinds of states are opened, make idler wheel that there can either be magnetic and without switching between magnetic two states, so as to make mobile equipment in ferromagnetic metal table
The simpler safety of process that face is placed and removed, while the ferromagnetic sundries that can be adsorbed to roller surface are quickly cleared up;
Roller structure simple and compact, mounting and adjusting is convenient, and performance is reliable and stable.
In order to achieve the above object, the utility model is realized using following technical scheme:
It is a kind of can magnetisation can demagnetization idler wheel, including wheel hub, iron tyre body one, iron tyre body two, magnetic isolation plate, every magnetic magnetic receiver,
Permanent magnet, dustproof cover and group torsional handle;Iron tyre body one, magnetic isolation plate, iron tyre body two set gradually the wheel body of composition idler wheel, in wheel body
Portion sets spherical groove;It is placed in the spherical groove of wheel body, has and the matched spherical appearance of spherical groove every magnetic magnetic receiver
Face can simultaneously be freely rotated wherein, and permanent magnet is arranged in every in magnetic magnetic receiver, the both ends of permanent magnet with every the corresponding of magnetic magnetic receiver
Two sides are concordant;The side of wheel body sets wheel hub for being connect with the shaft of mobile equipment, and the opposite side of wheel body sets dustproof cover, dust-proof
Lid middle part radially open up allocating slot, dial torsional handle one end pass through allocating slot after connection every magnetic magnetic receiver;Dial torsional handle can along dial
Slot moves, and under the drive for dialling torsional handle, permanent magnet is driven to be rotated in spherical groove every magnetic magnetic receiver;And after rotating, when forever
When N poles, the S poles of magnet contact respectively with iron tyre body one, iron tyre body two, idler wheel magnetisation is used as magnetic rollers;Work as permanent magnet
N poles, S poles are with iron tyre body one, iron tyre body two simultaneously when contacting, idler wheel demagnetization, surface is nonmagnetic.
The magnetic isolation plate is aluminum magnetic isolation plate, is consolidated between iron tyre body one, magnetic isolation plate, iron tyre body two by wheel body fixing screws
Fixed connection;It is fixedly connected between wheel hub and wheel body, between dustproof cover and wheel body by attachment screw.
It is described to be made every magnetic magnetic receiver of aluminum material.
The permanent magnet is rare-earth permanent magnet.
The permanent magnet is cylinder, every offering matched circular through hole on magnetic magnetic receiver.
Set dust-proof cushion on the inside of the dustproof cover, dial torsional handle fixing end sequentially pass through dustproof cover, dust-proof cushion after, with every
Magnetic magnetic receiver is connected through a screw thread;Sliding slot is opened up on the inside of dustproof cover, when dialling torsional handle movement, dust-proof cushion is in the case where dialling torsional handle and driving
It is slided along sliding slot.
Corresponding 2 extreme positions for dialling torsional handle, group torsional handle are located in one of the limit respectively at the both ends of the allocating slot
Idler wheel is in magnetisation state during position, dials idler wheel when torsional handle is located at another extreme position and is in erasing state.
Compared with prior art, the beneficial effects of the utility model are:
1) idler wheel magnetisation or demagnetization can be artificially controlled by being set on group torsional handle of idler wheel side, can easily makes rolling
Wheel have it is magnetic and nonmagnetic between convert, to adapt to different requirements;
2) after demagnetization, the ferromagnetic sundries such as the iron filings of roller surface absorption can be easily removed, ensure mobile equipment
Reliability service;
3) suitable for industrial detection scanner, welding robot, surface cleaning machines people and other in ferromagnetic metal table
The mobile equipment of face walking work uses, applied widely;
4) due to have can demagnetization characteristic, the installation, mobile, more square when moving away from mobile equipment on ferromagnetic metal surface
Just, and the insecurity damaged by strong magnetic attraction to personnel can be eliminated;
5) idler wheel is simple and compact for structure, and mounting and adjusting is convenient, and performance is reliable and stable.
Description of the drawings
Fig. 1 a are the front views of conventional magnetic idler wheel.
Fig. 1 b are the A-A sectional views in Fig. 1 a.
Fig. 2 be it is described in the utility model can magnetisation can demagnetization idler wheel structure diagram one (magnetisation state).
Fig. 3 be it is described in the utility model can magnetisation can demagnetization idler wheel structure diagram two (erasing state).
Fig. 3 a are the right views of Fig. 3.
In figure:1. 4. wheel hub of iron tyre body 2. permanent magnet, 3. holding screw, 5. attachment screw 6. is every 7. permanent magnet 8. of magnetic magnetic receiver
2 12. dust-proof cushion of iron tyre body one 9. magnetic isolation plate, 10. wheel body fixing screws, 11. iron tyre body, 13. dustproof cover 14. is dialled torsional handle 15. and is dialled
Slot
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings:
As shown in Figure 2 and Figure 3, it is described in the utility model it is a kind of can magnetisation can demagnetization idler wheel, including wheel hub 4, iron tyre body one
8th, iron tyre body 2 11, magnetic isolation plate 9, every magnetic magnetic receiver 6, permanent magnet 7, dustproof cover 13 and dial torsional handle 14;Iron tyre body 1, every magnetic
Plate 9, iron tyre body 2 11 set gradually the wheel body of composition idler wheel, and spherical groove is set in the middle part of wheel body;Wheel body is placed in every magnetic magnetic receiver 6
In spherical groove, have and can be simultaneously freely rotated wherein with the matched spherical outer surface of spherical groove, permanent magnet 7 is arranged in
Every in magnetic magnetic receiver 6, the both ends of permanent magnet 7 and the corresponding two sides every magnetic magnetic receiver 6 are concordant;The side of wheel body sets wheel hub 4 and uses
It is connect in the shaft with mobile equipment, the opposite side of wheel body sets dustproof cover 13, and 13 middle part of dustproof cover radially opens up allocating slot 15 (such as
Shown in Fig. 3 a), dial torsional handle 14 one end pass through allocating slot 15 after connection every magnetic magnetic receiver 6;Dialling torsional handle 14 can be along allocating slot 15
It is mobile, under the drive for dialling torsional handle 14, permanent magnet 7 is driven to be rotated in spherical groove every magnetic magnetic receiver 6;And after rotating, when
When N poles, the S poles of permanent magnet 7 contact respectively with iron tyre body 1, iron tyre body 2 11, idler wheel magnetisation is used as magnetic rollers;When
When N poles, the S poles of permanent magnet 7 contact simultaneously with iron tyre body 1, iron tyre body 2 11, idler wheel demagnetization, surface is nonmagnetic.
The magnetic isolation plate 9 is aluminum magnetic isolation plate, is fixed between iron tyre body 1, magnetic isolation plate 9, iron tyre body 2 11 by wheel body
Screw 10 is fixedly connected;It is fixedly connected between wheel hub 4 and wheel body, between dustproof cover 13 and wheel body by attachment screw 5.
It is described to be made every magnetic magnetic receiver 6 of aluminum material.
The permanent magnet 7 is rare-earth permanent magnet.
The permanent magnet 7 is cylinder, every offering matched circular through hole on magnetic magnetic receiver 6.
The inside of the dustproof cover 13 sets dust-proof cushion 12, and the fixing end for dialling torsional handle 14 sequentially passes through dustproof cover 13, dust-proof
After pad 12, with being connected through a screw thread every magnetic magnetic receiver 6;13 inside of dustproof cover opens up sliding slot, when dialling the movement of torsional handle 14, dust-proof cushion
12 slide in the case where dialling torsional handle 14 and driving along sliding slot.
Corresponding 2 extreme positions for dialling torsional handle 14, group torsional handle 14 are located therein one respectively at the both ends of the allocating slot 15
Idler wheel is in magnetisation state during a extreme position, dials idler wheel when torsional handle 14 is located at another extreme position and is in erasing state.
It is described in the utility model it is a kind of can magnetisation can demagnetization idler wheel, for industrial detection scanner, welding robot, table
Face clean robot or other mobile equipment in the walking work of ferromagnetic metal surface;The industrial detection scanner includes super
Sound wave scanner, phased-array ultrasonic scanner, ultrasonic diffraction time difference of arrival technique scanner, vortex scanner and ray scanner.
It is described in the utility model it is a kind of can magnetisation can demagnetization idler wheel, the mobile equipment of the idler wheel is installed in ferromagnetism
Idler wheel during moving or moving away from, by dialling torsional handle 14 is adjusted to erasing state, makes operation more square by metal surface placement
Just safety;
During mobile equipment normal operation, idler wheel is adjusted by dialling torsional handle 14 to magnetisation state, is rolled as magnetism
Wheel uses;It, will by dialling torsional handle 14 when roller surface, which adsorbs iron filings, iron rust or other ferromagnetic sundries, influences normal walking
Idler wheel is adjusted to erasing state, after quick cleaning sundries, you can readjust and used for magnetic rollers.
It is described in the utility model can magnetisation can the wheel body of idler wheel of demagnetization be mainly made of iron tyre body 1, iron tyre body 2 11,
Magnetic isolation plate 9 is used to separate the two;Spherical groove is processed respectively on iron tyre body 1, iron tyre body 2 11 and magnetic isolation plate 9, is combined
It is formed to place permanent magnet 7 and every the inner space of magnetic magnetic receiver 6 afterwards.Permanent magnet 7 is flush-mounted in separated magnetic effect every magnetic
In magnetic receiver 6, and it can be freely rotated with every magnetic magnetic receiver 6.
During assembling, first cylindrical permanent magnet iron 7 is put into every in magnetic magnetic receiver 6, then by equipped with permanent magnet 7 every magnetic magnetic receiver
6 fit together the main body knot of composition idler wheel with iron tyre body 1, magnetic isolation plate 9 and iron tyre body 2 11 by wheel body fixing screws 10
Structure;In the side of wheel body by attachment screw stationary hub 4, dust-proof cushion 12 and dustproof cover are sequentially placed in the opposite side of wheel body
13, then fixed with attachment screw 5.It is tightened in after the end for dialling torsional handle 14 is passed through dustproof cover 13 and dust-proof cushion 12 every magnetic magnetic
In threaded hole on iron seat 6, that is, complete the assembling of idler wheel.
In use, by can magnetisation can the wheel hub 4 of idler wheel of demagnetization be connected through a screw thread, then use with the wheel shaft in mobile equipment
Holding screw 3 is locked.When mobile equipment normal work, by can magnetisation can the idler wheel of demagnetization be adjusted to magnetic force line conduction state
(as shown in Fig. 2, the N poles of permanent magnet 7 are contacted with iron tyre body 2 11 at this time, S poles are contacted with iron tyre body 1, iron tyre body 1 and iron
The magnetism of wheel body 2 11 is different and between the two by magnetic force line conduction, and roller surface band is caused to be magnetic), roller surface passes through
Magnetic force is tightly adsorbed with ferromagnetic metal surface, ensures the stability of mobile equipment traveling and work;When mobile equipment completes work
Make or to remove iron filings on idler wheel when sundries, by can magnetisation can the idler wheel of demagnetization be adjusted to magnetic line of force off-state (such as Fig. 3
Shown, the N poles of permanent magnet 7, S are extremely contacted with iron tyre body 1, iron tyre body 2 11 simultaneously at this time, iron tyre body 1 and iron tyre body two
11 internal magnetic field lines are closed, and the magnetic line of force between iron tyre body 1 and iron tyre body 2 11 is caused to disconnect), roller surface is without magnetic force, you can
It is easily purged, so as to improve working efficiency.
The preferable specific embodiment of the above, only the utility model, but the scope of protection of the utility model is not
This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (7)
1. it is a kind of can magnetisation can demagnetization idler wheel, which is characterized in that including wheel hub, iron tyre body one, iron tyre body two, magnetic isolation plate, every
Magnetic magnetic receiver, permanent magnet, dustproof cover and group torsional handle;Iron tyre body one, magnetic isolation plate, iron tyre body two set gradually the wheel of composition idler wheel
Body, wheel body middle part set spherical groove;It is placed in the spherical groove of wheel body, has matched with spherical groove every magnetic magnetic receiver
Spherical outer surface can simultaneously be freely rotated wherein, and permanent magnet is arranged in every in magnetic magnetic receiver, the both ends of permanent magnet with every magnetic magnet
The correspondence two sides of seat are concordant;The side of wheel body sets wheel hub for being connect with the shaft of mobile equipment, and the opposite side of wheel body is set up defences
Dirt lid radially opens up allocating slot in the middle part of dustproof cover, dial torsional handle one end pass through allocating slot after connection every magnetic magnetic receiver;Dial torsional handle
It can be moved along allocating slot, under the drive for dialling torsional handle, permanent magnet be driven to be rotated in spherical groove every magnetic magnetic receiver;And it rotates
Afterwards, when the N poles of permanent magnet, S poles contact respectively with iron tyre body one, iron tyre body two, idler wheel magnetisation is used as magnetic rollers;
When the N poles of permanent magnet, S poles contact simultaneously with iron tyre body one, iron tyre body two, idler wheel demagnetization, surface is nonmagnetic.
2. it is according to claim 1 it is a kind of can magnetisation can demagnetization idler wheel, which is characterized in that the magnetic isolation plate for aluminum every
Magnetic sheet is fixedly connected between iron tyre body one, magnetic isolation plate, iron tyre body two by wheel body fixing screws;Between wheel hub and wheel body, it is dust-proof
Lid is fixedly connected between wheel body by attachment screw.
3. it is according to claim 1 it is a kind of can magnetisation can demagnetization idler wheel, which is characterized in that it is described every magnetic magnetic receiver by aluminium
Material is made.
4. it is according to claim 1 it is a kind of can magnetisation can demagnetization idler wheel, which is characterized in that the permanent magnet for rare earth forever
Magnet.
5. it is according to claim 1 it is a kind of can magnetisation can demagnetization idler wheel, which is characterized in that the permanent magnet be cylinder
Body, every offering matched circular through hole on magnetic magnetic receiver.
6. it is according to claim 1 it is a kind of can magnetisation can demagnetization idler wheel, which is characterized in that set on the inside of the dustproof cover
Dust-proof cushion, dial torsional handle fixing end sequentially pass through dustproof cover, dust-proof cushion after, with being connected through a screw thread every magnetic magnetic receiver;It is dust-proof
Lid inside opens up sliding slot, and when dialling torsional handle movement, dust-proof cushion is slided in the case where dialling torsional handle and driving along sliding slot.
7. it is according to claim 1 it is a kind of can magnetisation can demagnetization idler wheel, which is characterized in that the allocating slot both ends difference
Corresponding 2 extreme positions for dialling torsional handle, group torsional handle are located in one of idler wheel during extreme position and are in magnetisation state, dial and turn round
Idler wheel is in erasing state when handle is located at another extreme position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721667042.6U CN207579444U (en) | 2017-12-05 | 2017-12-05 | It is a kind of can magnetisation can demagnetization idler wheel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721667042.6U CN207579444U (en) | 2017-12-05 | 2017-12-05 | It is a kind of can magnetisation can demagnetization idler wheel |
Publications (1)
Publication Number | Publication Date |
---|---|
CN207579444U true CN207579444U (en) | 2018-07-06 |
Family
ID=62735335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201721667042.6U Active CN207579444U (en) | 2017-12-05 | 2017-12-05 | It is a kind of can magnetisation can demagnetization idler wheel |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN207579444U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107984966A (en) * | 2017-12-05 | 2018-05-04 | 北京安可为检测科技有限公司 | It is a kind of can magnetisation can the roller and application thereof of demagnetization, usage |
CN111189921A (en) * | 2020-03-12 | 2020-05-22 | 北京日祥科技有限公司 | Industrial ultrasonic scanner with degaussing roller |
CN113012889A (en) * | 2021-02-08 | 2021-06-22 | 上海大学 | Permanent magnetic wheel with controllable on-off external magnetic force |
-
2017
- 2017-12-05 CN CN201721667042.6U patent/CN207579444U/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107984966A (en) * | 2017-12-05 | 2018-05-04 | 北京安可为检测科技有限公司 | It is a kind of can magnetisation can the roller and application thereof of demagnetization, usage |
CN111189921A (en) * | 2020-03-12 | 2020-05-22 | 北京日祥科技有限公司 | Industrial ultrasonic scanner with degaussing roller |
CN113012889A (en) * | 2021-02-08 | 2021-06-22 | 上海大学 | Permanent magnetic wheel with controllable on-off external magnetic force |
CN113012889B (en) * | 2021-02-08 | 2022-07-29 | 上海大学 | Permanent magnetic wheel with controllable on-off external magnetic force |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN207579444U (en) | It is a kind of can magnetisation can demagnetization idler wheel | |
US4629921A (en) | Dynamoelectric machine rotor | |
WO2006133627A1 (en) | Magnetizing walking wheel unit for magnetic adsorption type wall-climbing device | |
AU2007273704A8 (en) | Magnetic field element | |
KR100585185B1 (en) | Magnetic adsorption device and production method thereof and magnetic apparatus | |
CN107984966A (en) | It is a kind of can magnetisation can the roller and application thereof of demagnetization, usage | |
CN202855634U (en) | Magnetic switch driver | |
CN204710811U (en) | A kind of pipe magnetic rust cleaning wiper | |
CN206357006U (en) | A kind of sanding machine applied to flat thin magnet | |
CN108380771B (en) | Magnetic force adjustable permanent magnetism conveying roller | |
SU1127787A1 (en) | Device for draining oil from units of vehicles | |
CN107214029B (en) | Self-suction type stud protection device | |
KR101358184B1 (en) | Magnetic lifter | |
CN101692376B (en) | Demagnetization method after grinding bearing ring | |
CN211102425U (en) | Bonding device | |
CN205074981U (en) | Rotatable and screwdriver that removes screwdrivers blade | |
CN104038105B (en) | A kind of magnetic force power assisting device | |
CN101226813B (en) | V-shaped demagnetizing device for macrotype bearing ring odd magnetic pole unit and demagnetizing method | |
CN218038733U (en) | Permanent magnet high field intensity magnet yoke-free roller type magnetic system | |
CN113651086B (en) | Transfer device used in production process of neodymium-iron-boron magnet | |
CN204546365U (en) | With the electric permanent-magnet suction disc of magnetism gathering rings | |
CN210780468U (en) | Winding wire longitudinal wrapping and wrapping composite equipment of neodymium iron boron permanent magnet motor | |
CN215325006U (en) | Feeding device for demagnetizer coil | |
CN211611232U (en) | Digital music physiotherapy equipment | |
CN2175460Y (en) | Demagnetising machine of rotation permanent magnetism disc type |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |