CN116652548A - Magnet assembling device and magnet assembling method - Google Patents
Magnet assembling device and magnet assembling method Download PDFInfo
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- CN116652548A CN116652548A CN202310945404.7A CN202310945404A CN116652548A CN 116652548 A CN116652548 A CN 116652548A CN 202310945404 A CN202310945404 A CN 202310945404A CN 116652548 A CN116652548 A CN 116652548A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims description 42
- 238000003466 welding Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 description 24
- 239000001307 helium Substances 0.000 description 24
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 24
- 239000007788 liquid Substances 0.000 description 24
- 230000005855 radiation Effects 0.000 description 16
- 238000012545 processing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
Abstract
The application relates to the technical field of superconducting magnets, in particular to a magnet assembling device and a magnet assembling method, wherein the magnet assembling device comprises a base and a rack which are fixedly connected, a rotating shaft which is rotatably arranged is arranged on the rack, and the rotating shaft is positioned above the base; the adjusting platform is slidably arranged on the base platform, and the sliding direction of the adjusting platform along the base platform is consistent with the extending direction of the rotating shaft; the height of the adjusting platform is adjustable; the adjusting and positioning tool is detachably arranged on the rotating shaft; the modular placement platform assembly is mounted on the adjustment platform. When the magnet assembling device and the magnet assembling method are used for assembling the superconducting magnet, the moving times of the magnet assembly are less, the magnet assembly can be moved and positioned more accurately, and the magnet assembling device and the magnet assembling method have the advantages of convenience in adjustment, time saving, labor saving and the like.
Description
Technical Field
The application relates to a magnet assembling device and a magnet assembling method, and belongs to the technical field of superconducting magnets.
Background
A superconducting magnetic resonance system refers to a magnetic resonance imaging apparatus in which a main magnet is a superconducting magnet. The magnetic field intensity is high, the magnetic field uniformity is good, the energy consumption is low, the signal to noise ratio is high, the scanning speed is high, and the like. The method is widely applied to medical treatment and scientific research detection.
In order to realize that the superconducting coils in the superconducting magnet can keep a superconducting state, the superconducting coils are immersed into liquid helium (4.2K) to ensure that the time is below the superconducting critical temperature. In order to ensure that helium always remains in a liquid state, the liquid helium container is completely wrapped by the heat radiation shielding layer and the vacuum layer, and heat convection and heat transfer of heat radiation to the liquid helium are reduced to the greatest extent. Meanwhile, in order to reduce the heat transfer of the liquid helium by heat conduction, the liquid helium container and the heat radiation shielding layer are connected with the outermost layer of the magnet by using a hanging rod with high heat resistance, so that the state that the liquid helium container is suspended in the heat radiation shielding layer is formed, and the heat conduction is reduced to the greatest extent. And meanwhile, the redundant heat in the liquid helium is led out through the cold head. So as to ensure that helium is in a liquid state at the moment and that the superconducting coil is below the superconducting critical temperature at the moment.
Because of the requirement for the uniformity of the magnetic field, the distance between the layers is relatively small, and meanwhile, the relative position between the layers needs to be ensured to be accurate. As shown in both figures 1 and 2, the layers are completely nested in a ring shape, so that the layers are required to be welded from inside to outside in assembly and manufacture, and once the layers are welded and formed, the modification difficulty is high. The magnetic field intensity and the uniformity of the magnetic field determine that the basic structure of the existing superconducting magnetic resonance system is a layer-by-layer nested cylindrical structure.
The existing magnet processing technology is that a worker usually carries out welding processing through repeated disassembly and assembly movement, on-site measurement, scribing and positioning according to experience and theoretical data through an operation instruction.
Because of the need of workers to perform field measurement, scribing and positioning welding, the relative position deviation among layers in the magnet is generally larger, the processing speed is low, and the processing quality is relatively lower. Meanwhile, each layer of structure is of a cylindrical structure and is formed by rolling and welding flat plates, and the roundness deviation is large.
As shown in fig. 1 and 2 together, the superconducting magnet is not a complete cylinder, and typically has a multi-lobe configuration, where the magnet is rotated to facilitate multi-angle machining of the magnet.
Because each part of the magnet assembly is mostly made of metal parts such as stainless steel, the magnet assembly has large mass and high moving difficulty, and is usually moved by using a forklift or a crane. When the forklift and the travelling crane move, the accuracy of the movement distance and the direction control is very low, and different parts can collide during assembly, so that the parts are damaged or the whole magnet is damaged.
Disclosure of Invention
The application aims to solve the technical problems, and provides a magnet assembling device and a magnet assembling method, wherein when the magnet assembling device and the magnet assembling method are used for assembling a superconducting magnet, the moving times of a magnet assembly are less, the magnet assembly can be moved and positioned more accurately, and the magnet assembling device and the magnet assembling method have the advantages of convenience in adjustment, time saving, labor saving and the like.
In order to solve the problems, the application adopts the following technical scheme:
the magnet assembling device comprises a base and a rack which are fixedly connected, wherein a rotating shaft which is rotatably arranged is arranged on the rack, and the rotating shaft is positioned above the base; the adjusting platform is slidably arranged on the base platform, and the sliding direction of the adjusting platform along the base platform is consistent with the extending direction of the rotating shaft; the height of the adjusting platform is adjustable; the adjusting and positioning tool is detachably arranged on the rotating shaft; the modular placement platform assembly is mounted on the adjustment platform.
As an improvement, the adjusting and positioning tool comprises two flange connection discs which are arranged at intervals, and the two flange connection discs are fixedly connected through a first connection rod; the flange connection disc is provided with a convex positioning boss. The positioning boss is matched with the inner diameter of the main coil framework.
As an improvement, a rotary locking assembly is arranged at the end part of the rotating shaft, a guide groove is formed in the rotating shaft, the rotary locking assembly comprises an ejection block which is slidably arranged in the guide groove and a first transmission shaft which is rotatably arranged at the end part of the rotating shaft, the first transmission shaft is coaxially arranged with the rotating shaft, a first hand wheel is arranged at one end of the first transmission shaft, a section of external thread section is arranged at the other end of the first transmission shaft, the first hand wheel is positioned outside the rotating shaft, and the external thread section is positioned inside the rotating shaft; the external thread section is provided with a transmission nut matched with the external thread section; the ejection block is hinged with a connecting rod, and the other end of the connecting rod is hinged on the transmission nut.
As an improvement, the ejection block is provided with a first conical surface, and the rotating shaft is provided with a second conical surface.
As an improvement, a worm which is rotationally arranged is arranged on the frame, and one end of the worm is provided with a second hand wheel; the rotating shaft is provided with a turbine which is matched with the worm, and the turbine is meshed with the worm for transmission.
As an improvement, modularization place the platform subassembly and include the backup pad that two intervals set up, the upper end of backup pad is the cambered surface of undercut, is equipped with a plurality of detachable first supporting pieces in the backup pad, is equipped with convex holding surface on the first supporting piece, and the holding surface of a plurality of first supporting pieces is located same cambered surface.
As an improvement, the base station is provided with two first rails which are arranged at intervals, and the extending direction of the first rails is consistent with the extending direction of the rotating shaft; the adjusting platform comprises a first platform, a second platform and a third platform which are sequentially arranged from bottom to top; the bottom of the first platform is provided with a plurality of first sliding blocks which are respectively and slidably arranged on the two first rails; the second platform is slidably arranged on the first platform, and the sliding direction of the second platform relative to the first platform is a vertical direction; the third platform is slidably mounted on the second platform, and the sliding direction of the third platform relative to the second platform is perpendicular to the extending direction of the first rail.
As an improvement, the magnet assembling device further comprises a hoop device assembly, wherein the hoop device assembly comprises two annular second end plates which are arranged at intervals, and the two second end plates are fixedly connected through a plurality of second connecting rods; the second end plate is provided with a plurality of corner blocks which are arranged at intervals; screw holes are formed in the corner blocks, screw rods are installed in the screw holes, and the screw rods are arranged along the radial direction of the second end plate; one end of the screw rod, which is close to the center of the second end plate, is fixed with a compressing block.
As an improvement, magnet assembly device still includes hoop circle device support frame, hoop circle device support frame includes base and four support columns of vertical fixing on the base, and the upper end of support column is equipped with the supporting slot with second connecting rod looks adaptation.
A method of magnet assembly comprising the steps of:
step A, placing a main coil framework on a modularized placing platform assembly; installing the adjusting and positioning tool on the inner aperture of the main coil framework; placing the main coil framework together with the modular placement platform assembly onto an adjustment platform;
step B, changing the position or the height of the adjusting platform so that the central axis of the main coil framework is coaxial with the rotating shaft; moving the position of the adjusting platform to sleeve the main coil framework on the rotating shaft, and fixing the main coil framework and the adjusting and positioning tool on the rotating shaft by using the rotating locking assembly; separating the modular placement platform assembly from the primary coil framework;
step C, placing the shielding coil framework on the modularized placing platform assembly; changing the position or the height of the adjusting platform to enable the central shaft of the shielding coil framework to be coaxial with the rotating shaft; sleeving the shielding coil framework on the main coil framework by moving the position of the adjusting platform; rotating the rotating shaft to enable the circumferential positions of the main coil framework and the shielding coil framework to correspond; the main coil framework is fixedly connected with the shielding coil framework by using a mounting adjusting piece;
and D, moving the modularized placing platform assembly along with the adjusting platform in a direction away from the shielding coil framework, so that the modularized placing platform assembly is separated from the shielding coil framework, and welding and fixing the main coil framework and the shielding coil framework.
Compared with the prior art, the application has the following advantages:
when the magnet assembling device and the magnet assembling method are used for assembling the superconducting magnet, the moving times of the magnet assembly are less, the use of travelling crane and crane can be reduced, the magnet assembly can be moved and positioned more accurately, the error generated during the moving and positioning between the parts is reduced, the problem of poor controllability of the moving distance is avoided, and meanwhile the collision between the parts is reduced; has the advantages of convenient adjustment, time and labor saving, etc.
Most of the parts matched with the magnet in the magnet assembling device can be detached and replaced, and the use of the magnets with different sizes can be met through the combined use of different parts. The relative positions among the components can be accurately regulated, and the relative positions among the components can be well controlled; the rotatable rotating shaft is utilized, so that the cylindrical magnet can be welded and assembled at various angles conveniently.
The application will now be described in detail with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic diagram of a prior art superconducting magnet;
FIG. 2 is a schematic diagram of a prior art superconducting magnet;
FIG. 3 is a schematic view of a magnet assembly apparatus according to a first embodiment of the present application;
FIG. 4 is a schematic view of the structure of the base station of FIG. 3;
FIG. 5 is a schematic view of the structure of the positioning tool of FIG. 3;
FIG. 6 is a schematic view of the structure of the frame and shaft of FIG. 3;
FIG. 7 is an enlarged view at M in FIG. 6;
FIG. 8 is a schematic perspective view of the rotational lock assembly of FIG. 6;
FIG. 9 is a schematic cross-sectional view of N-N of FIG. 6;
FIG. 10 is a schematic view of the structure of the spindle of FIG. 3;
FIG. 11 is a schematic view of the modular placement platform assembly of FIG. 3;
FIG. 12 is a schematic view of the first support block of FIG. 11;
FIG. 13 is a schematic view of the structure of the adjustment platform of FIG. 3;
FIG. 14 is a schematic view of the first platform of FIG. 13;
FIG. 15 is a schematic view of the second platform of FIG. 13;
FIG. 16 is a schematic view of the third platform of FIG. 13;
fig. 17 is a schematic view of the timing belt and the second pulley of fig. 13;
FIG. 18 is a view showing a magnet assembly apparatus according to a first embodiment of the present application;
FIG. 19 is a diagram showing a magnet assembly apparatus according to a first embodiment of the present application;
FIG. 20 is a view of a third embodiment of a magnet assembly apparatus according to the present application;
FIG. 21 is a schematic view of a magnet assembly apparatus according to a second embodiment of the present application;
FIG. 22 is a schematic view of the hooping device assembly of FIG. 21;
FIG. 23 is a schematic view of the support frame of the hooping device of FIG. 21;
FIG. 24 is a reference view showing a use state of a magnet assembly apparatus according to a second embodiment of the present application;
in the figure, a 1-main coil framework, a 2-shielding coil framework, a 3-heat radiation shielding layer, a 4-tower, a 5-outer cylinder, a 6-inner cylinder and a 7-first end plate; 8-base, 9-frame, 10-spindle, 11-adjustment platform, 12-adjustment positioning fixture, 13-modular placement platform assembly, 14-flange connection pad, 15-first connection rod, 16-positioning boss, 17-adjustment piece, 18-rotation locking assembly, 19-guide slot, 20-first drive shaft, 21-first hand wheel, 22-external thread section, 23-drive nut, 24-ejector block, 25-connecting rod, 26-end cap, 27-stopper, 28-first conical surface, 29-second conical surface, 30-worm, 31-second hand wheel, 32-turbine, 33-support plate, 34-first support block, 35-support surface, 36-second support block, 37-first track, 38-first platform, 39-second platform, 40-third platform, 41-first slider, 42-second drive shaft, 43-second drive block, 44-guide hole, 45-guide rod, 46-first pulley, 47-synchronous belt, 48-second pulley, 49-third hand wheel, 50-second track, 50-third hand wheel, 52-third track, 52-third support block, 58-support frame, 58-third support block, 58-second support frame, 58-third support frame, support frame assembly, 55-base, support frame assembly, 55-support frame, support frame assembly, and support frame assembly, 66-fastening screws, 67-fixing blocks, 68-fixing parts, 69-round-hoop bolts, 70-positioning planes, 71-third connecting rods, 72-positioning blocks and 73-limit stops.
Detailed Description
Example 1
As shown in fig. 1 and 2 together, the superconducting magnet of the related art includes a heat radiation shielding layer 3 of an outermost layer and a liquid helium vessel installed inside the heat radiation shielding layer 3, and further includes a tower 4. The liquid helium container comprises a main coil framework 1 and a shielding coil framework 2 sleeved outside the main coil framework 1, and the main coil framework 1 and the shielding coil framework 2 are fixedly connected through welding. The space between the heat radiation shielding layer 3 and the liquid helium vessel is a vacuum layer. The superconducting magnet is designed by arranging one or more heat radiation shielding layers between the heat radiation shielding layer 3 and the liquid helium container according to practical situations. The present embodiment exemplifies only the heat radiation shielding layer 3 having only one outermost layer. The heat radiation shielding layer 3 includes an outer tube 5 and an inner tube 6 that are sleeved together, and two first end plates 7. Two first end plates 7 connect the outer and inner drums 5 and 6 together from both ends, respectively. When the magnet is assembled, the main coil framework 1 and the shielding coil framework 2 of the liquid helium container are assembled, and after the detection is qualified, the heat radiation shielding layer 3 and the liquid helium container are assembled.
As shown in fig. 3, 4, 5 and 6, a magnet assembling device includes a base 8 and a frame 9 fixedly connected, the frame 9 is fixedly installed at one end of the base 8, and the base 8 is a reference platform of the magnet assembling device. The base 8 is a frame framework formed by processing square pipes, and adjacent square pipes are fixedly connected or welded and fixed through bolts.
The upper end of the frame 9 is provided with a rotating shaft 10 which is rotatably arranged, the rotating shaft 10 is arranged on the frame 9 in a cantilever mode, and the rotating shaft 10 is positioned above the base 8. The magnet assembly device further comprises an adjusting platform 11 which is slidably mounted on the base 8, wherein the sliding direction of the adjusting platform 11 along the base 8 is consistent with the extending direction of the rotating shaft 10. The height of the adjustment platform 11 is adjustable. The magnet assembly device further comprises an adjusting and positioning tool 12 detachably mounted on the rotating shaft 10 and a modularized placing platform assembly 13 detachably mounted on the adjusting platform 11.
As shown in fig. 3 and 5 together, the adjusting and positioning tool 12 includes two flange connection discs 14 that are arranged at intervals, and a through hole is arranged at the center of the flange connection disc 14. The two flange connection discs 14 are fixedly connected through a first connection rod 15. The number of the first connecting rods 15 is four, and the four first connecting rods 15 are uniformly distributed on the flange connection disc 14 along the circumferential direction of the flange connection disc 14. The flange connection plate 14 is provided with a convex positioning boss 16. The positioning boss 16 is matched with the inner diameter of the main coil framework 1. The flange connection disc 14 is also provided with a locating plate 65 and a fastening screw 66. The positioning plate 65 has a circular plate-shaped structure, and the positioning plate 65 is positioned on the periphery of the through hole on the flange connection disc 14. Three fixing blocks 67 are further fixed on the periphery of the through hole on the flange connection disc 14, and the fixing blocks 67 are located on the outer side of the locating plate 65. The fixing block 67 is provided with a fastening screw 66, and the fastening screw 66 is arranged along the radial direction of the flange connection disc 14. When in use, the two flange connection discs 14 are respectively arranged at two ends of the main coil framework 1, and the positioning boss 16 is arranged in the inner diameter of the main coil framework 1. Then, the two flange connection plates 14 are fixed to the main coil bobbin 1 by four first connection bars 15. The fastening screw 66 is turned so that the fastening screw 66 abuts against the rotating shaft 10, and the fastening screw 66 can be used for adjusting circumferential fixation between the positioning tool 12 and the rotating shaft 10. Four uniformly distributed adjusting pieces 17 are fixed on the flange connection disc 14. Four adjusting members 17 are provided along the radial direction of the flange connection plate 14. One end of the adjusting member 17 is detachably fixed to the flange connection plate 14 by a fastener, and the other end of the adjusting member 17 is provided with a fixing portion 68. The fixing portion 68 is provided with a positioning plane 70. The positioning plane 70 is adapted to the end position of the shielding coil former 2, the positioning plane 70 abutting against the end of the shielding coil former 2. The fixing portion 68 is screwed with a round bolt 69. In use, the adjustment member 17 and the collar bolts 69 are used for fixing between the flange connection plate 14 and the shield coil bobbin 2.
As shown in fig. 3, 6, 7, 8, 9 and 10, a rotation locking assembly 18 is mounted at an end of the rotation shaft 10, and a guide groove 19 is provided on the rotation shaft 10. The rotational lock assembly 18 includes an ejector block 24 slidably mounted in the guide groove 19 and a first drive shaft 20 rotatably mounted at an end of the rotary shaft 10. The first transmission shaft 20 and the rotating shaft 10 are coaxially arranged, a first hand wheel 21 is installed at one end of the first transmission shaft 20, and a section of external thread section 22 is arranged at the other end of the first transmission shaft. The first hand wheel 21 is located outside the spindle 10 and the externally threaded section 22 is located inside the spindle 10. The external thread section 22 is provided with a drive nut 23 adapted thereto. The ejection block 24 is hinged with a connecting rod 25, and the other end of the connecting rod 25 is hinged with a transmission nut 23. The ejector block 24 is provided with a first conical surface 28, and the rotating shaft 10 is provided with a second conical surface 29 matched with the first conical surface 28.
In this embodiment, preferably, three guide grooves 19 are uniformly distributed on the guide groove 19 along the circumferential direction, and an ejection block 24 is disposed in each guide groove 19. The end of the rotating shaft 10 is provided with a detachable end cover 26, and the rotating shaft 10 is rotatably arranged on the end cover 26 at the end of the rotating shaft 10. A stopper 27 is mounted on the end of the first transmission shaft 20 provided with the male screw section 22. When in use, the ejection block 24 is extended out of the guide groove 19, the second conical surface 29 and the first conical surface 28 on the ejection block 24 are respectively clamped on the positioning plate 65 on the adjusting and positioning tool 12 from two sides, and the adjusting and positioning tool 12 is fixed on the rotating shaft 10.
As shown in fig. 3, 6 and 9, the frame 9 is provided with a worm 30 rotatably disposed, and a second hand wheel 31 is mounted at one end of the worm 30. The rotating shaft 10 is provided with a turbine 32 which is matched with the worm 30, and the turbine 32 is meshed with the worm 30 for transmission.
As shown in fig. 3, 11 and 12 together, the modular placement platform assembly 13 includes two support plates 33 disposed at intervals, the upper ends of the support plates 33 are concave cambered surfaces, a plurality of detachable first support blocks 34 are disposed on the support plates 33, a circular arc-shaped support surface 35 is disposed on the first support blocks 34, and the support surfaces 35 of the plurality of first support blocks 34 are located on the same circular arc surface. Specifically, the two sides of the first supporting block 34 are respectively fixed with a second supporting block 36, the second supporting block 36 and the supporting plate 33 are respectively provided with a mounting hole, and the second supporting block 36 and the supporting plate 33 are fixedly connected through the mounting holes and the fasteners. The first support blocks 34 are replaced with different sizes for supporting magnet assemblies of different outer diameters. In the present embodiment, the first support blocks 34 are used to support the main coil bobbin 1 and the shield coil bobbin 2.
As shown in fig. 3, 4, 13, 14, 15, 16 and 17, two first rails 37 are provided on the base 8 at intervals, the extending direction of the first rails 37 is identical to the extending direction of the rotating shaft 10, and limit stops 73 are provided at both ends of the first rails 37. The adjustment platform 11 comprises a first platform 38, a second platform 39 and a third platform 40 arranged in sequence from bottom to top. The bottom of the first platform 38 is provided with a plurality of first sliders 41, and the plurality of first sliders 41 are slidably mounted on the two first rails 37, respectively. In the present embodiment, the number of the first sliders 41 is four. The first platform 38 is rectangular, and each of the four corners of the first platform 38 is provided with a first slider 41. The second platform 39 is slidably mounted on the first platform 38, and the sliding direction of the second platform 39 relative to the first platform 38 is a vertical direction; the third platform 40 is slidably mounted on the second platform 39, and a sliding direction of the third platform 40 relative to the second platform 39 is perpendicular to the extending direction of the first rail 37.
The first platform 38 is provided with a second transmission shaft 42 which is vertically and rotatably arranged, and external threads are processed on the second transmission shaft 42; the second platform 39 is fixedly provided with a second transmission block 43, a screw hole matched with the external thread on the second transmission shaft 42 is processed on the second transmission block 43, and the second transmission block 43 is sleeved on the second transmission shaft 42. The lower extreme of second transmission shaft 42 installs first band pulley 46, is equipped with the second band pulley 48 that rotates the setting on the first platform 38, and first band pulley 46 and second band pulley 48 are synchronous pulley, and first band pulley 46 and second band pulley 48 pass through the hold-in range 47 transmission and connect. The first platform 38 is provided with a third hand wheel 49, and the third hand wheel 49 is in transmission connection with the second belt wheel 48 through a worm gear structure, and the structure refers to the worm gear structure of the second hand wheel 31 for driving the rotating shaft 10 to rotate, so that details are not repeated here. The third hand wheel 49 can drive the second transmission shaft 42 when rotating, and the second transmission shaft 42 can drive the second platform 39 to move upwards or downwards through the second transmission block 43 when rotating.
The second platform 39 is provided with a guide rod 45 which is vertically arranged; the first platform 38 is provided with a guide hole 44 corresponding to the guide rod 45, and the guide rod 45 is slidably mounted in the guide hole 44. In this embodiment, the second platform 39 has a rectangular structure, and four ends of the second platform 39 are provided with a guide rod 45.
The second platform 39 is provided with a second track 50, and the extending direction of the second track 50 is perpendicular to the extending direction of the first track 37; the third platform 40 is provided with a second slider 51, and the second slider 51 is slidably mounted on the second rail 50. The second platform 39 is provided with a third transmission shaft 52 which is rotatably arranged, and a fourth hand wheel 53 is arranged on the third transmission shaft 52. The third drive shaft 52 is externally threaded. The third platform 40 is provided with a third transmission block 54, the third transmission block 54 is provided with a screw hole matched with the external thread on the third transmission shaft 52, and the third transmission block 54 is sleeved on the third transmission shaft 52. When the fourth hand wheel 53 is rotated, the third platform 40 is driven to slide relative to the second platform 39 by the third transmission shaft 52 and the third transmission block 54.
A method of magnet assembly using the magnet assembly apparatus, comprising the steps of:
step A, as shown in FIG. 18, a first supporting block 34 matched with the main coil skeleton 1 is installed on the modularized placing platform assembly 13, and the main coil skeleton 1 is placed on the modularized placing platform assembly 13; the adjusting and positioning tool 12 is arranged on the inner aperture of the main coil framework 1; the main coil former 1 is then placed onto the adjustment platform 11 together with the modular placement platform assembly 13.
Step B, changing the position or the height of the adjusting platform 11, so that the central axis of the main coil framework 1 and the rotating shaft 10 are positioned on the same straight line, namely coaxial, and rotating the first hand wheel 21 to enable the ejection block 24 to be retracted into the guide groove 19; at this time, the main coil framework 1 is sleeved on the rotating shaft 10 by moving the position of the adjusting platform 11, and the main coil framework 1 and the adjusting and positioning tool 12 are fixed on the rotating shaft 10 by using the rotation locking assembly 18. Specifically, one end of the adjusting and positioning tool 12 is abutted against the second conical surface 29, at this time, the first hand wheel 21 is rotated, the ejection block 24 extends out of the guide groove 19 and abuts against the other end of the adjusting and positioning tool 12, and the adjusting and positioning tool 12 and the main coil skeleton 1 are fixed on the rotating shaft 10. Finally, the modular placement platform assembly 13 is moved with the adjustment platform 11 in a direction away from the main coil bobbin 1 such that the modular placement platform assembly 13 is separated from the main coil bobbin 1.
Step C, as shown in FIG. 3, replacing a first supporting block 34 matched with the shielding coil frame 2 on the modularized placing platform assembly 13, and placing the shielding coil frame 2 on the modularized placing platform assembly 13; the position or the height of the adjusting platform 11 is changed, so that the central axis of the shielding coil framework 2 and the rotating shaft 10 are positioned on the same straight line, namely, the central axis and the rotating shaft are coaxial; the shielding coil framework 2 is sleeved on the main coil framework 1 by moving the position of the adjusting platform 11, so that the axial relative position between the main coil framework 1 and the shielding coil framework 2 is adjusted to a target value; the rotation shaft 10 is rotated so that the main bobbin 1 corresponds to the circumferential position of the shield bobbin 2. The main coil bobbin 1 and the shield coil bobbin 2 are fixedly connected using the mounting regulator 17. Specifically, the adjusting members 17 are fixed to the two flange lands 14 such that the positioning planes 70 on the fixed adjusting members 17 abut against the ends of the shield coil bobbin 2; the hoop bolt 69 abuts against the outer circumference of the shielding coil frame 2, and the hoop bolt 69 is rotated to hoop the outer circle of the shielding coil frame 2; and the main coil bobbin 1 and the shield coil bobbin 2 are fixed together.
And D, as shown in fig. 20, moving the modularized placing platform assembly 13 along with the adjusting platform 11 in a direction away from the shielding coil frame 2, so that the modularized placing platform assembly 13 is separated from the shielding coil frame 2, and welding and fixing the main coil frame 1 and the shielding coil frame 2. The rotating shaft 10 is rotated during the welding process, so that the welding between the main coil framework 1 and the shielding coil framework 2 is facilitated. After the liquid helium vessel in the superconducting magnet is assembled, the adjusting piece 17 is disassembled.
When the magnet assembling device and the magnet assembling method are used for assembling the superconducting magnet, the moving times of the magnet assembly are less, the use of travelling crane and crane can be reduced, the magnet assembly can be moved and positioned more accurately, errors generated during the moving and positioning between the parts are reduced, the moving distance is prevented from being difficult to control, and meanwhile the collision between the parts is reduced; has the advantages of convenient adjustment, time and labor saving, etc.
Most of the parts of the magnet assembling device matched with the magnet can be detached and replaced, and the magnet assembling device can meet the assembly of magnets with different sizes through the combined use of different parts. The relative positions among the components can be accurately regulated, and the relative positions among the components can be well controlled; the rotatable rotating shaft is utilized, so that the welding and processing of all angles of the cylindrical magnet can be conveniently carried out.
Example two
As shown collectively in fig. 21, 22, 23 and 24, the present embodiment differs from the first embodiment in that the magnet assembly device further includes a hooping device assembly 55 and a hooping device support frame 61. The hoop device assembly 55 comprises two annular second end plates 56 which are arranged at intervals, and the two second end plates 56 are fixedly connected through four second connecting rods 57; the second end plate 56 is provided with fourteen spaced apart corner blocks 58. The corner block 58 is provided with a screw hole, a screw rod 59 is arranged in the screw hole, and the screw rod 59 is arranged along the radial direction of the second end plate 56; a compression block 60 is fixed to the end of the screw 59 near the center of the second end plate 56. In use, the hoop apparatus assembly 55 is mounted on the outer barrel 5 of the thermal radiation shield 3. By rotating the respective screws 59, the positions of the respective pressing blocks 60 are adjusted, and the outer cylinder 5 is swaged. Four detachable third connecting rods 71 are fixed on the second end plate 56, positioning blocks 72 are arranged at the other ends of the third connecting rods 71, and the third connecting rods 71 are arranged along the radial direction of the second end plate 56. In use, the locating block 72 is removably secured to the flange interface 14 by fasteners for circumferential positioning and securing between the flange interface 14 and the hoop device assembly 55.
In this embodiment, the second end plate 56 has a relief portion provided for relieving the tower 4, so that the second end plate 56 is not a planar structure. In practice, the second end plate 56 is provided in a planar structure according to the outline structure of the superconducting magnet.
The support 61 of the hoop device comprises a base 64 and four support columns 62 vertically fixed on the base 64, and support grooves 63 matched with the second connecting rods 57 are formed in the upper ends of the support columns 62. Two support columns 62 are provided in a group for supporting a second connecting rod 57.
In this embodiment, the method for assembling a magnet by using the magnet assembling device is different from the method for assembling a magnet in the first embodiment in that the method for assembling a magnet further includes:
step E, as shown in fig. 21, removes the modular placement platform assembly 13 from the adjustment platform 11. A collar assembly 55 is mounted on the outer tube 5 of the heat radiation shielding layer 3. The hoop device support frame 61 is fixedly mounted on the adjustment platform 11, and the outer cylinder 5 after the hoop device assembly 55 is mounted is placed on the hoop device support frame 61.
Step F, as shown in fig. 21, the position or height of the adjustment platform 11 is changed such that the central axis of the outer cylinder 5 and the rotation shaft 10 are positioned on the same line, i.e., coaxial. The main outer cylinder 5 is sleeved on the liquid helium container by moving the position of the adjusting platform 11. The rotation shaft 10 is rotated so that the liquid helium vessel corresponds to the circumferential position of the outer cylinder 5 and reaches a predetermined target position. A third connecting rod 71 is installed between the hoop device assembly 55 and the flange connection disc 14 of the adjusting and positioning tool 12, so that the axial positions of the liquid helium container and the outer cylinder 5 correspond to each other, and the liquid helium container and the outer cylinder 5 are fixed into a whole.
And G, installing a hanging rod and a connecting rod between the liquid helium container and the outer cylinder 5 in the superconducting magnet, so that the liquid helium container and the outer cylinder 5 are integrated. Rotating the first hand wheel 21 releases the rotational lock assembly 18 from limiting the adjustment positioning tool 12 and the liquid helium vessel, and rotating the tightening screw 66 releases the circumferential restriction between the adjustment positioning tool 12 and the spindle 10. As shown in fig. 24, the position of the adjustment stage 11 is changed so that the main coil bobbin 1 of the liquid helium vessel is separated from the rotation shaft 10. And disassembling the adjusting and positioning tool 12, and assembling and welding the inner cylinder 6 and the first end plate 7 of the heat radiation shielding layer 3. After assembly and welding is completed, the superconducting magnet and hoop apparatus assembly 55 is suspended from the conditioning platform 11. Then the third connecting rod 71 and the hooping device assembly 55 are disassembled; the superconducting magnet is assembled.
It should be noted that, positioning and locking devices are provided between the rotating shaft 10 and the frame 9, between the adjusting platform 11 and the base 8, between the rotation locking assembly 18 and the rotating shaft 10, and between the second platform 39 and the first platform 38, and between the third platform 40 and the second platform 39 in the adjusting platform 11. The positioning and locking device is not an innovation point of the application, and the structure for positioning and locking in the prior art, such as locking modes of using locking screws, mounting positioning pins and the like, can be used for locking among the components.
In summary, the magnet assembly device and the magnet assembly method of the application have the advantages of less times of movement of the magnet assembly, accurate movement and positioning of the magnet assembly, convenient adjustment, time saving, labor saving and the like when the superconducting magnet is assembled by using the magnet assembly device and the magnet assembly method.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a magnet assembly device, includes fixed connection's base (8) and frame (9), its characterized in that: a rotating shaft (10) which is rotatably arranged is arranged on the stand (9), and the rotating shaft (10) is positioned above the base station (8); the device also comprises an adjusting platform (11) which is slidably arranged on the base station (8), wherein the sliding direction of the adjusting platform (11) along the base station (8) is consistent with the extending direction of the rotating shaft (10); the height of the adjusting platform (11) is adjustable;
the adjusting and positioning tool (12) is detachably arranged on the rotating shaft (10);
also comprises a modular placement platform assembly (13) detachably mounted on the adjustment platform (11).
2. A magnet assembly apparatus as claimed in claim 1, wherein: the adjusting and positioning tool (12) comprises two flange connection discs (14) which are arranged at intervals, and the two flange connection discs (14) are fixedly connected through a first connection rod (15); a convex positioning boss (16) is arranged on the flange connection disc (14).
3. A magnet assembly apparatus as claimed in claim 2, wherein: the end part of the rotating shaft (10) is provided with a rotating locking assembly (18), the rotating shaft (10) is provided with a guide groove (19), the rotating locking assembly (18) comprises an ejection block (24) which is slidably arranged in the guide groove (19) and a first transmission shaft (20) which is rotatably arranged at the end part of the rotating shaft (10), the first transmission shaft (20) and the rotating shaft (10) are coaxially arranged, one end of the first transmission shaft (20) is provided with a first hand wheel (21), the other end of the first transmission shaft is provided with a section of external thread section (22), the first hand wheel (21) is positioned outside the rotating shaft (10), and the external thread section (22) is positioned inside the rotating shaft (10); the external thread section (22) is provided with a transmission nut (23) matched with the external thread section; the ejection block (24) is hinged with a connecting rod (25), and the other end of the connecting rod (25) is hinged with a transmission nut (23).
4. A magnet assembly apparatus as claimed in claim 3, wherein: the ejection block (24) is provided with a first conical surface (28), and the rotating shaft (10) is provided with a second conical surface (29).
5. A magnet assembly apparatus as claimed in any one of claims 1 to 4, wherein: a worm (30) which is rotationally arranged is arranged on the stand (9), and a second hand wheel (31) is arranged at one end of the worm (30); the rotating shaft (10) is provided with a turbine (32) which is matched with the worm (30), and the turbine (32) is meshed with the worm (30) for transmission.
6. A magnet assembly apparatus as claimed in any one of claims 1 to 4, wherein: the modularized placing platform assembly (13) comprises two supporting plates (33) which are arranged at intervals, the upper ends of the supporting plates (33) are downwards concave cambered surfaces, a plurality of detachable first supporting blocks (34) are arranged on the supporting plates (33), arc-shaped supporting surfaces (35) are arranged on the first supporting blocks (34), and the supporting surfaces (35) of the first supporting blocks (34) are located on the same cambered surface.
7. A magnet assembly apparatus as claimed in any one of claims 1 to 4, wherein: two first rails (37) are arranged on the base (8) at intervals, and the extending direction of the first rails (37) is consistent with the extending direction of the rotating shaft (10);
the adjusting platform (11) comprises a first platform (38), a second platform (39) and a third platform (40) which are sequentially arranged from bottom to top; the bottom of the first platform (38) is provided with a plurality of first sliding blocks (41), and the plurality of first sliding blocks (41) are respectively and slidably arranged on the two first rails (37); the second platform (39) is slidably arranged on the first platform (38), and the sliding direction of the second platform (39) relative to the first platform (38) is a vertical direction; the third platform (40) is slidably mounted on the second platform (39), and the sliding direction of the third platform (40) relative to the second platform (39) is perpendicular to the extending direction of the first rail (37).
8. A magnet assembly apparatus as claimed in claim 4, wherein: the magnet assembling device further comprises a hooping device assembly (55), wherein the hooping device assembly (55) comprises two annular second end plates (56) which are arranged at intervals, and the two second end plates (56) are fixedly connected through a plurality of second connecting rods (57); a plurality of corner blocks (58) which are arranged at intervals are arranged on the second end plate (56); screw holes are formed in the corner blocks (58), screw rods (59) are installed in the screw holes, and the screw rods (59) are arranged along the radial direction of the second end plate (56); a compression block (60) is fixed at one end of the screw rod (59) close to the center of the second end plate (56).
9. A magnet assembly apparatus as claimed in claim 8, wherein: the magnet assembling device further comprises a hooping device supporting frame (61), the hooping device supporting frame (61) comprises a base (64) and four supporting columns (62) vertically fixed on the base (64), and supporting grooves (63) matched with the second connecting rods (57) are formed in the upper ends of the supporting columns (62).
10. A method of assembling a magnet, comprising the steps of:
step A, placing a main coil framework (1) on a modularized placing platform assembly (13); installing an adjusting and positioning tool (12) on the inner aperture of the main coil framework (1); placing the main coil skeleton (1) together with the modular placement platform assembly (13) onto an adjustment platform (11);
step B, changing the position or the height of the adjusting platform (11) so that the central axis of the main coil framework (1) is coaxial with the rotating shaft (10); the main coil framework (1) is sleeved on the rotating shaft (10) by moving the position of the adjusting platform (11), and the main coil framework (1) and the adjusting and positioning tool (12) are fixed on the rotating shaft (10) by using the rotating locking assembly (18); separating the modular placement platform assembly (13) from the main coil skeleton (1);
step C, placing the shielding coil framework (2) on a modularized placing platform assembly (13); changing the position or the height of the adjusting platform (11) so that the central axis of the shielding coil framework (2) is coaxial with the rotating shaft (10); the shielding coil framework (2) is sleeved on the main coil framework (1) through the position of the movable adjusting platform (11); rotating the rotating shaft (10) so that the circumferential positions of the main coil framework (1) and the shielding coil framework (2) correspond; the main coil framework (1) and the shielding coil framework (2) are fixedly connected by using a mounting adjusting piece (17);
and D, moving the modularized placing platform assembly (13) along with the adjusting platform (11) in a direction away from the shielding coil framework (2) so that the modularized placing platform assembly (13) is separated from the shielding coil framework (2), and welding and fixing the main coil framework (1) and the shielding coil framework (2).
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| CN202310945404.7A CN116652548B (en) | 2023-07-31 | 2023-07-31 | Magnet assembling device and magnet assembling method |
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| CN202310945404.7A CN116652548B (en) | 2023-07-31 | 2023-07-31 | Magnet assembling device and magnet assembling method |
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| CN116652548B CN116652548B (en) | 2023-10-20 |
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| US20060005378A1 (en) * | 2004-07-08 | 2006-01-12 | Arima Display Corp. | Apparatus and method for demounting and mounting an integrated circuit |
| CN206967029U (en) * | 2017-05-25 | 2018-02-06 | 湘电风能有限公司 | A kind of portable mounting platform |
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| CN116652548B (en) | 2023-10-20 |
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