CN100504429C - Method for installing permanent magnetic material in permanent magnetic field generating apparatus and transferring tool thereof - Google Patents
Method for installing permanent magnetic material in permanent magnetic field generating apparatus and transferring tool thereof Download PDFInfo
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- CN100504429C CN100504429C CNB031308074A CN03130807A CN100504429C CN 100504429 C CN100504429 C CN 100504429C CN B031308074 A CNB031308074 A CN B031308074A CN 03130807 A CN03130807 A CN 03130807A CN 100504429 C CN100504429 C CN 100504429C
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
Abstract
The present invention proposes permanent magnetic column installing method and tool for permanent magnetic field generator in, such as, magnetic resonant imaging equipment. The installation method includes the following steps: sliding permanent magnetic column via an additional board installed around the plate electrode to the surface of the plate electrode; painting adhesive to at least one side of the permanent magnetic column; adhering the permanent magnetic column to one other permanent magnetic column installed on the plate electrode in advance; and repeating the foregoing steps until finishing the installation of the permanent magnetic field generator. The present invention has the advantages of flexible operation and enlarged operation area.
Description
(1) technical field
The present invention relates to the installation method and the means of delivery thereof of the permanent magnetic material in a kind of permanent magnetic field generating means, particularly relate to the installation method of the permanent magnetic field generation device in a kind of MR imaging apparatus (MRI) and used instrument, in the MR imaging apparatus manufacture process, assembling permanent magnetism cylinder on pole plate.
(2) background technology
In measurement and image technique, magnetic field is widely used, for example, and various types of MR imaging apparatus, the permanent magnetic field that wherein utilizes permanent magnetic material to produce.To open C type permanent magnet MR imaging apparatus is example, its main physical construction as shown in Figure 1, an open MR imaging apparatus comprises: the C type frame 1 as magnetic loop; Top board 2 and lower platen 21 are installed in the two ends up and down of C type frame openings respectively, and top crown 3 and bottom crown 31 lay respectively in the opening of C type frame 1 and up and down and relatively be provided with; Go up gradient line girth sheets 11 and a following gradient coil board 111 for one, relatively be provided with the surface of top crown 3 and the surface of bottom crown 31 respectively, Luo Sihuan (Rose ring) 4 and 41 is installed in respectively on the another side of top crown 3 and bottom crown 31; Source 10 takes place and is arranged between top board 2 and the top crown 3 in magnetic field, and in the space between lower platen 21 and the bottom crown 31.The source takes place and is formed by a plurality of permanent magnet 5 bondings in this magnetic field.
Above-mentioned field generator for magnetic is an important components of MR imaging apparatus.These field generator for magnetic are arranged between the pole plate and pressing plate of opening part of open MRI equipment mutually accordingly, to produce the magnetic resonance that is used for to 0.5 tesla magnetic field the human body whole body, perhaps produce the magnetic resonance that is used for magnetic resonance (MR) diagnosis and the industrial use of body local or animal to the magnetic field of 1 tesla, other application in nuclear magnetic resonance or permanent magnetic material magnetic field.This field generator for magnetic is by a plurality of set of permanent magnetism cylinder and bonding forming of magnetizing.Usually, the permanent magnetism cylinder has two kinds of methods, assembling after promptly assembling back integral body magnetizes and magnetizes.Magnetizing, the permanent magnetism cylinder is stacked mutually by one pile of magnetic patch that magnetizes in the back assembling, is glued between each magnetic patch and forms one.Contrast, assembling back integral body magnetizes and need magnetize with powerful magnetizing equipment, and less owing to the magnetic patch size in the back assembling of magnetizing, and need not use powerful magnetizing equipment.In addition, monoblock type magnetizes in the method after assembling, can adopt large-sized permanent magnet to save built-up time in theory, but because the large scale permanent magnet will reach uniform magnetic characteristic and mechanical property is very difficult, thereby assembling back integral body magnetizes and also can adopt small size permanent magnetism cylinder in the method, thereby the magnetize potential advantage of method of integral body is limited.
In the method for back assembling that magnetizes, when from air, being placed between pole plate and the pressing plate permanent magnetism cylinder 5, permanent magnetism cylinder 5 is subjected to the effect of powerful magnetic force, this is because the magnetic property of pole plate or magnetic loop C type frame far surpasses air, thereby the permanent magnetism cylinder will be flown on pole plate or the magnetic loop frame by powerful magnetic field suction.When the permanent magnetism cylinder of some had been housed in pole plate and the pressing plate, because the magnetic same sex is repelled each other, at this moment the permanent magnetism cylinder can be subjected to powerful magnetic repulsion and eject pole plate, or the permanent magnetism cylinder is being subjected to spin inversion under the repulsive force.The bump that will cause bump, permanent magnetism cylinder and magnetic loop frame between permanent magnetism cylinder and pole plate bump, the permanent magnetism cylinder magnetic patch in these processes.Because the physical property of the material neodymium iron boron (NdFeB) of permanent magnetism cylinder is hard and crisp, after the collision, the property at parts of edges and corners of permanent magnetism cylinder is fragile, causes magnetic field inhomogeneous, influences picture quality.Thereby need often change impaired permanent magnetism cylinder.
For solving the problems of the technologies described above, Oxford magnetic technology company (Oxford Magnet Technology) has adopted a kind of whole magnetization method, wherein, the permanent magnetic material cylinder that does not magnetize as yet is installed to precalculated position on the pole plate, after assembling finishes, utilize superconductor technology to magnetize again.Because there is not magnetic field in assembling fashion, the permanent magnetic material cylinder is not subjected to magneticaction, and assembly operation is easy, and the permanent magnetic material cylinder is not fragile, but its shortcoming the is superconduction cost costliness that magnetizes.
EP 0 978 727 A2 have disclosed another method, wherein, under pressing plate or the not rack-mounted as yet situation of pole plate, assemble the permanent magnetism cylinder that has magnetized of predetermined quantity on pole plate or pressing plate, and then pole plate is assembled on the frame.The advantage of this method is, because pressing plate or pole plate still are not in corresponding position, do not form the magnetic closed-loop path, thereby the suffered magnetic force of permanent magnetism cylinder is less, is easy to install the permanent magnetism cylinder.But when the permanent magnetism cylinder has installed on the pole plate, at this moment pole plate or pressing plate are installed can be subjected to huge attractive force, the permanent magnetism cylinder can fly to bump against on pressing plate or the pole plate under the attraction of magnetic force.
Another kind of common method is after pole plate, pressing plate, magnetic loop framework are installed, the permanent magnetism cylinder that magnetizes to be installed one by one.But its shortcoming is that owing to be subjected to powerful magneticaction, it is relatively more difficult to move and install the permanent magnetism cylinder that magnetizes on pole plate, near the pole plate edge and near framework place installing and locating permanent magnetism cylinder particularly difficulty.Though most producers tend to adopt permanent magnetism cylinder installation method similarly, the problem that all exists the permanent magnetism cylinder to be subjected to magneticaction to be difficult to install is particularly in the marginal portion of pole plate.Therefore people expect a kind of new installation method that can overcome above-mentioned shortcoming.
(3) summary of the invention
The installation method that the purpose of this invention is to provide permanent magnetic material in a kind of permanent magnetic field generating means, be used to produce for example magnetic resonance equipment, this method is simple to operate, and is with low cost, can significantly improve the problem that the permanent magnetism cylinder is subjected to magneticaction to be difficult to install in the prior art.
Another object of the present invention provides the erecting tools of permanent magnetic material in a kind of permanent magnetic field generating means, and it is simple in structure, the permanent magnetism cylinder can be delivered on the pole plate exactly.
An object of the present invention is to realize by method of the present invention, promptly, the installation method of permanent magnetic material in a kind of permanent magnetic field generation device, be used to produce the equipment that has the permanent magnetic field generation device, this method comprises: (1) supplying step: via the add-in card that is installed on pressing plate and the pole plate periphery, sliding is transported on above-mentioned pole plate and the above-mentioned clamp surface with a permanent magnetism cylinder for feed cylinder; (2) gluing step: gluing or gluing in advance at least one side surface of above-mentioned permanent magnetism cylinder; (3) fixing step: above-mentioned permanent magnetism cylinder and the permanent magnetism cylinder that before has been installed on the above-mentioned pole plate are bonded to one; (4) repeating step (1) to (3) installs up to field generator for magnetic.
According to an aspect of the present invention, the add-in card of installing in the above-mentioned supplying step is made by ferromagnetic material.The periphery of above-mentioned pole plate detachably is equipped with add-in card, can adopt mechanical fixation methods such as double-screw bolt, pin, buckle.Magnetic conduction plane of common formation, the surface of the surface of this add-in card and above-mentioned pole plate.Because add-in card surface constitutes the extension on pole plate magnetic conduction surface, the permanent magnetism cylinder can be slided on the surface of above-mentioned pole plate by add-in card surperficial smooth-goingly.
According to another aspect of the present invention, in the above-mentioned supplying step, above-mentioned add-in card extends out from a part of periphery of above-mentioned pole plate.Perhaps, above-mentioned add-in card extends out from the whole periphery of above-mentioned pole plate, and like this, the permanent magnetism cylinder can enter polar board surface through the add-in card surface from all directions.After arriving the precalculated position, in fixing step, bond together this permanent magnetism cylinder and the previous permanent magnetism column side wall oppose side wall of installing.
According to a further aspect of the invention, in the above-mentioned supplying step, the periphery of above-mentioned pressing plate detachably is equipped with add-in card, can adopt mechanical fixation methods such as double-screw bolt, pin, buckle.Magnetic conduction plane of common formation, the surface of the surface of this add-in card and above-mentioned pressing plate.Because the add-in card surface constitutes the extension on pressing plate magnetic conduction surface, the permanent magnetism cylinder can be slided between above-mentioned pole plate and the pressing plate by the surperficial of add-in card smooth-goingly.Above-mentioned add-in card extends out from a part of periphery or the whole periphery of above-mentioned pressing plate, this add-in card at least in part with above-mentioned pole plate periphery on another add-in card stand facing each other mutually.
According to a further aspect of the invention, in the above-mentioned supplying step, above-mentioned add-in card is made up of the plurality of separate parts.For example, above-mentioned add-in card is assembled by four separating components, and after the assembling, the outward flange of add-in card is square, rectangle, and polygon or arc, the peripheral shape of its inner rim shape and above-mentioned pressing plate and/or above-mentioned pole plate is corresponding.
Another object of the present invention is to be realized by the means of delivery of permanent magnetic material of the present invention, promptly, a kind of means of delivery of permanent magnetic material, be used to implement installation method of the present invention, comprise: a tunnel type feed cylinder and a cradle that holds above-mentioned permanent magnetism cylinder, the discharge end of above-mentioned tunnel type feed cylinder detachably is installed on the add-in card, and above-mentioned cradle has a piston, at the above-mentioned permanent magnetism cylinder of the inner promotion of above-mentioned tunnel type feed cylinder.
An aspect according to permanent magnetism cylinder means of delivery of the present invention, the discharge end of above-mentioned tunnel type feed cylinder has a flange and guide, the shape of cross section of the inner chamber of above-mentioned feed cylinder and size and the above-mentioned permanent magnetism cylinder that is transferred are basic identical, and can pass through screw, modes such as buckle are fixed on the add-in card.
Another aspect according to permanent magnetism cylinder means of delivery of the present invention, above-mentioned cradle has a leading screw, one end of above-mentioned leading screw rotatably connects above-mentioned piston, the fixedly connected rocking handle of the other end, and a nut is installed on the flange of above-mentioned feed cylinder by a cover plate.Above-mentioned piston is a permanent magnetism cylinder clamper, can slide in the tunnel type feed cylinder, just can easily the permanent magnetism cylinder be sent as the precalculated position by rotating above-mentioned rocking handle.One of scheme as an alternative, above-mentioned cradle (9) also can adopt a hydraulic cylinder, and the end of its piston rod has a piston, as permanent magnetism cylinder clamper.
The present invention is by using add-in card, in the installation process of magnetic field of permanent magnet generating means, temporarily changed the stress of permanent magnetism cylinder, make the permanent magnetism cylinder can on pole plate or pressing plate, move to any position easily, particularly near the edge of pole plate or pressing plate, the magnetic force that is subjected to of permanent magnetism cylinder significantly reduces, and its stress is similar to the situation in pole plate or the installation of pressing plate middle part, and installation method is flexible, laborsaving, safe, efficient.In addition,, increased the installment work face of permanent magnetism cylinder by using add-in card, so, do not need frequently to change the installation site of permanent magnetism cylinder means of delivery, also can easily the permanent magnetism cylinder be placed to appointed positions.
(4) description of drawings
For a better understanding of the present invention, now engage accompanying drawing and introduce some embodiments of the present invention.Wherein Fig. 1 represents the main physical construction of open C type permanent magnet MR imaging apparatus in the prior art.
Fig. 2 represents method according to an embodiment of the invention, is prepared as the situation that MR imaging apparatus is installed the permanent magnetic field generating means, and use therein is the add-in card that separating component is formed.
Fig. 3 represent embodiment illustrated in fig. 2 in, after add-in card is installed, between pressing plate and pole plate, move the situation of carrying the permanent magnetism cylinder.
Fig. 4 represents an embodiment according to permanent magnetism cylinder means of delivery of the present invention, and this means of delivery is being carried the situation of permanent magnetism cylinder between top crown and top board.
The skeleton view of the tunnel type feed cylinder of this means of delivery among Fig. 5 presentation graphs 4 embodiment.
The skeleton view of the spiral cradle of this means of delivery among Fig. 6 presentation graphs 4 embodiment.
Fig. 7 represents to use method of the present invention, the permanent magnetic field generating means of installation MR imaging apparatus.
(5) embodiment
According to one embodiment of present invention, provide a kind of in the permanent magnetic field generating means of open C type MR imaging apparatus the installation method of permanent-magnet, wherein used the distinctive add-in card of the present invention, shown in Fig. 2 and 3.But these embodiment are not restrictive, and the present invention is not limited only to the magnetic resonance magnet, are not limited to open C type magnet structure yet.
As shown in Figure 2, the upper and lower pressing plate 2,21 of MR imaging apparatus, upper and lower pole plate 3,31, and Luo Si ring 4,41 installed ready, permanent magnetic field generating means 10 just to be installed.Before this, separate type add-in card 6 is installed in advance at the periphery of above-mentioned pressing plate 2,21 and above-mentioned pole plate 3,31.This add-in card 6 is by four separating components 61,62, and 63,64 assemble, utilize double-screw bolt, after the mechanical means assembling such as pin or buckle, the outward flange of add-in card 6 is square (also can be other shapes), and its inner rim is rounded, and adapt with the periphery of above-mentioned pressing plate 2,21 and above-mentioned pole plate 3,31.Identical with it, on the periphery of lower platen 21 and bottom crown 31, add-in card 6 is installed equally.Above-mentioned add-in card 6 is to be made by ferromagnetic material.
As shown in Figure 3, above-mentioned add-in card 6 has been installed on the whole periphery of pressing plate 2,21 and pole plate 3,31, and some permanent magnetism cylinders have been installed in the space between top board 2 and the top crown 3, and the blended rubber bonding is fixed as one 5 '.A permanent magnetism cylinder 5 to be installed is slided on the surface of pole plate 3 via the add-in card 6 that is installed on top board 2 and top crown 3 peripheries, move to preposition again; Gluing or gluing in advance at least one side surface of above-mentioned permanent magnetism cylinder 5; Above-mentioned permanent magnetism cylinder 5 and the permanent magnetism cylinder (5 ') that before has been installed on the pole plate 3 are bonded to one; Repeat the permanent magnetic field generating means 10 of these steps up to the top installs always.Between above-mentioned lower platen 21 and above-mentioned bottom crown 31, the installation process of permanent magnetism cylinder and top board 2 and top crown 3 are identical, and its installment work up before the installment work of permanent magnetic field generating means, carry out afterwards or simultaneously.After all permanent magnetic field generating meanss 10 install, remove add-in card 6, MR imaging apparatus is carried out next step installation.
The installation method of permanent magnetism cylinder of the present invention is based on following principle: after on the pole plate 3,31 of permanent magnet some permanent magnets being installed, magnetic field just produces thereupon.Because the magnetic property of pole plate, pressing plate and magnetic loop frame is considerably beyond air, the permanent magnetism cylinder is subjected to stronger magnetic force near the interface of air, pole plate, pressing plate and interface, and less at the magnetic force at pole plate middle part, magnetic force is stronger near the edge of pole plate.Therefore, installed in the process of permanent magnetism cylinder 5 to the edge by the pole plate middle part, the permanent magnetism cylinder is subjected to increasing magneticaction near the pole plate edge, moves, and location and bonding are very difficult.This and permanent magnetism cylinder are subjected to magneticaction less at the middle part of pole plate, move, the location is relatively easy to situation that very big difference is arranged.The present invention utilizes this point just, at above-mentioned pressing plate 2,21 and pole plate 3, add-in card 6 is installed on 31 the periphery, the synthetic magnetic conduction plane that has enlarged in the surface of add-in card 6 and the surface of above-mentioned pressing plate, equally, a bigger magnetic conduction plane is also merged on the surface of the surface of add-in card 6 and above-mentioned pole plate.On these bigger magnetic conduction planes, the periphery of above-mentioned pressing plate 2,21 no longer is in marginal position, and in like manner, the periphery of above-mentioned pole plate also no longer is in marginal position.Therefore, this moment, as long as overcome less magnetic force, fitting operation was relatively easy at the edge of above-mentioned pressing plate and above-mentioned pole plate installing and locating permanent magnetism cylinder.Thereby solved permanent-magnet in the prior art is installed difficulty on the pole plate edge problem.
In the embodiment shown in Fig. 2 and 3, adopted separate type add-in card 6, this add-in card also has flexible, the easy to adjust advantage of dismounting except having above-mentioned excellent effect.In addition, at the whole periphery of above-mentioned pressing plate and above-mentioned pole plate add-in card is installed all, the permanent magnetism cylinder can be transported between above-mentioned pressing plate and the above-mentioned pole plate from all directions like this.Simultaneously, installment work face has also enlarged, and more helps the operation of permanent magnetism cylinder means of delivery.
According to a unshowned embodiment of the present invention, in the installation process of permanent magnetism cylinder 5, only at each pressing plate 2, extend add-in card 6 on 21 the part edge, simultaneously at each pole plate 3, on the roughly corresponding position of 31 periphery above-mentioned add-in card 6 is installed also, upper and lower two add-in cards are oppositely arranged, carry the permanent magnetism cylinder to enter pole plate thus.Other installation steps are identical with last embodiment, so repeat no more.
According to method of the present invention, be provided with after the add-in card 6, the stressed of permanent magnet diminishes near the periphery of pressing plate 2,21 and pole plate 3,31, the substitute is, and the permanent magnetism cylinder is stressed bigger near the outer rim of add-in card 6.For making permanent magnetism cylinder 5 overcome the powerful magnetic force at add-in card edge, enter smoothly between pressing plate and the pole plate, the present invention also provides a kind of means of delivery of permanent magnetism cylinder.
Fig. 4, a specific embodiment of 5 and 6 expressions permanent magnetism cylinder means of delivery 7 of the present invention, it comprises: a tunnel type feed cylinder 8 and a spiral cradle 9 that holds above-mentioned permanent magnetism cylinder, the discharge end of above-mentioned tunnel type feed cylinder 8 detachably is installed on the add-in card 6 with screw or buckle, and the permanent magnetism cylinder is carried in the space between top board 2 and top crown 3.
As shown in Figure 5, the discharge end of above-mentioned tunnel type feed cylinder 8 has a guide 81 and a flange 82, and this guide 81 can stretch into a segment distance between the add-in card 6 of face-off, and the permanent magnetism cylinder is imported therebetween.This flange 82 can have mounting hole and be used for above-mentioned feed cylinder 8 detachably is fixed on add-in card 6, so that carry out conveying operations.The other end at above-mentioned feed cylinder 8 also has a flange 83, is used for fixing nut 94.The shape of cross section of the inner chamber of this tunnel type feed cylinder 8 and size and the above-mentioned permanent magnetism cylinder 5 that is transferred are basic identical, are suitable for holding and pass through permanent magnetism cylinder 5.
As seen from Figure 6, the spiral cradle 9 of permanent magnetism cylinder means of delivery 7 of the present invention, it has a leading screw 92 and a nut 94 that is installed in tunnel type feed cylinder 8 one ends.One end of the leading screw 92 of above-mentioned spiral cradle 9 rotatably connects a piston 91, the fixedly connected rocking handle 95 of the other end, and above-mentioned nut 94 is installed on the flange 83 of tunnel type feed cylinder 8 by cover plate 93.Connected mode can be multiple modes such as screw, buckle.
The course of work of permanent magnetism cylinder means of delivery 7 of the present invention as shown in Figure 4, after the above-mentioned permanent magnetism cylinder 5 of these tunnel type feed cylinder 8 fillings, the guide 81 of the discharge end of this feed cylinder 8 is extend between the mutual opposed add-in card 6, and utilize flange 82 that this feed cylinder 8 is fixed on the above-mentioned add-in card 6.Rotate above-mentioned rocking handle 95, above-mentioned piston 91 is moved to discharge end under the effect of above-mentioned leading screw 92, with the permanent magnetism cylinder 5 in the feed cylinder 8 through guide 81, push between the above-mentioned add-in card 6, and continue to move to precalculated position on the pole plate thus, be integral with the permanent magnetism cylinder 5 ' positioning bonding of having installed there.
In another embodiment of permanent magnetism cylinder means of delivery of the present invention, adopt a hydraulic cylinder to substitute spiral cradle 9, the top of the piston rod of this hydraulic cylinder has a piston, i.e. permanent magnetism cylinder clamper.
Though permanent magnetism cylinder means of delivery of the present invention is simple in structure, can make permanent magnetism cylinder 5 easily overcome near the powerful magnetic force in add-in card 6 edges, enter on the pole plate, improved installment work efficient.
Claims (12)
1, the installation method of permanent magnetic material is used to produce the equipment that has the permanent magnetic field generating means in a kind of permanent magnetic field generating means, and this method comprises:
(1) supplying step: via the add-in card (6) that is installed on pressing plate (2,21) and pole plate (3, the 31) periphery, sliding is transported on above-mentioned pole plate (3,31) and above-mentioned pressing plate (2, the 21) surface with a permanent magnetism cylinder (5) for feed cylinder;
(2) gluing step: gluing or gluing in advance at least one side surface of above-mentioned permanent magnetism cylinder (5);
(3) fixing step: above-mentioned permanent magnetism cylinder (5) and the permanent magnetism cylinder (5 ') that before had been installed on the above-mentioned pole plate (3,31) are bonded to one;
(4) repeating step (1) to (3) installs up to permanent magnetic field generating means (10);
2, installation method as claimed in claim 1 is characterized in that: in the above-mentioned supplying step, the above-mentioned add-in card (6) of installation is made by ferromagnetic material.
3, installation method as claimed in claim 2 is characterized in that: in the above-mentioned supplying step, above-mentioned pole plate (3,31) periphery detachably is equipped with add-in card (6), magnetic conduction plane of common formation, the surface of surface of this add-in card (6) and above-mentioned pole plate (3,31).
4, installation method as claimed in claim 3 is characterized in that: in the above-mentioned supplying step, above-mentioned add-in card (6) extends out on a part of periphery of above-mentioned pole plate (3,31) or whole periphery.
5, installation method as claimed in claim 2 is characterized in that: in the above-mentioned supplying step, above-mentioned pressing plate (2,21) periphery detachably is equipped with add-in card (6), magnetic conduction plane of common formation, the surface of surface of this add-in card (6) and above-mentioned pressing plate (2,21).
6, installation method as claimed in claim 5 is characterized in that: in the above-mentioned supplying step, above-mentioned add-in card (6) extends out on a part of periphery of above-mentioned pressing plate (2,21) or whole periphery.
7, as the described installation method of one of claim 1 to 7, it is characterized in that: in the above-mentioned supplying step, above-mentioned add-in card (6) is made up of the plurality of separate parts.
8, installation method as claimed in claim 8 is characterized in that: in the above-mentioned supplying step, above-mentioned add-in card (6) is by four separating components (61,62,63,64) assemble, after the assembling, the outward flange of add-in card (6) is square rectangle, polygon or arc, the peripheral shape of its inner rim shape and above-mentioned pressing plate (2,21) and/or above-mentioned pole plate (3,31) is corresponding.
9, a kind of means of delivery of permanent magnetic material, be used to implement the installation method of claim 1 to 8, comprise: a tunnel type feed cylinder (8) and a cradle (9) that holds above-mentioned permanent magnetism cylinder, the discharge end of above-mentioned tunnel type feed cylinder (8) detachably is installed on the add-in card (6), above-mentioned cradle (9) has a piston (91), at the above-mentioned permanent magnetism cylinder (5) of the inner promotion of above-mentioned tunnel type feed cylinder (8).
10, means of delivery as claimed in claim 9, it is characterized in that: the discharge end of above-mentioned tunnel type feed cylinder (8) has a flange (82) and guide (81), and the shape of cross section of the inner chamber of above-mentioned feed cylinder (8) and size and the above-mentioned permanent magnetism cylinder (5) that is transferred are basic identical.
11, means of delivery as claimed in claim 9, it is characterized in that: above-mentioned cradle (9) has a leading screw (92), one end of above-mentioned leading screw rotatably connects above-mentioned piston (91), the fixedly connected rocking handle of the other end (95), a nut (94) is installed on the flange (83) of above-mentioned feed cylinder (8) by cover plate (93).
12, means of delivery as claimed in claim 9 is characterized in that: above-mentioned cradle (9) adopts a hydraulic cylinder, and the end of its piston rod has a piston.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031308074A CN100504429C (en) | 2003-05-09 | 2003-05-09 | Method for installing permanent magnetic material in permanent magnetic field generating apparatus and transferring tool thereof |
| PCT/EP2004/004988 WO2004099807A1 (en) | 2003-05-09 | 2004-05-10 | The assembling method and conveying tool for magnetic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031308074A CN100504429C (en) | 2003-05-09 | 2003-05-09 | Method for installing permanent magnetic material in permanent magnetic field generating apparatus and transferring tool thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1548980A CN1548980A (en) | 2004-11-24 |
| CN100504429C true CN100504429C (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031308074A Expired - Fee Related CN100504429C (en) | 2003-05-09 | 2003-05-09 | Method for installing permanent magnetic material in permanent magnetic field generating apparatus and transferring tool thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100504429C (en) |
| WO (1) | WO2004099807A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051122B (en) * | 2014-06-12 | 2016-08-24 | 包头市稀宝博为医疗系统有限公司 | Magnet apparatus and measurement apparatus thereof for magnetic resonance imaging |
| CN108777226B (en) * | 2018-08-17 | 2024-01-02 | 中山市三乐电子有限公司 | High-frequency inductance coil mounting device |
| CN109669150A (en) * | 2018-12-29 | 2019-04-23 | 佛山瑞加图医疗科技有限公司 | A kind of circumference magnet installation special equipment and installation method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1102077B1 (en) * | 1999-11-16 | 2006-03-08 | Neomax Co., Ltd. | Pole-piece unit for an MRI magnet |
| US6467157B1 (en) * | 2000-01-26 | 2002-10-22 | Odin Technologies, Ltd. | Apparatus for construction of annular segmented permanent magnet |
-
2003
- 2003-05-09 CN CNB031308074A patent/CN100504429C/en not_active Expired - Fee Related
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2004
- 2004-05-10 WO PCT/EP2004/004988 patent/WO2004099807A1/en active Search and Examination
Also Published As
| Publication number | Publication date |
|---|---|
| CN1548980A (en) | 2004-11-24 |
| WO2004099807A1 (en) | 2004-11-18 |
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