CN102192807B - Three-dimensional magnetic measurement fixture - Google Patents
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- CN102192807B CN102192807B CN 201110053985 CN201110053985A CN102192807B CN 102192807 B CN102192807 B CN 102192807B CN 201110053985 CN201110053985 CN 201110053985 CN 201110053985 A CN201110053985 A CN 201110053985A CN 102192807 B CN102192807 B CN 102192807B
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Abstract
The invention discloses a three-dimensional magnetic measurement fixture. A vertical pull pressure sensor is arranged on the upper surface of an installation frame, and a horizontal pull pressure sensor and a longitudinal pull pressure sensor are arranged on the inner surface of the side direction of the installation frame; the lower surface of the installation frame is provided with a magnet fixing plate; a force measurement rod of the vertical pull pressure sensor is connected with the installation frame and the magnet fixing plate; a non-magnetic ring which keeps a distance from the installation frame and the magnet fixing plate is arranged below the magnet fixing plate; a permanent magnet is arranged in the non-magnetic ring; a steel ball is arranged between the permanent magnet and the magnet fixing plate; a force measurement rod of the horizontal pull pressure sensor passes through and is fixed on the non-magnetic ring, and the end of the horizontal pull pressure sensor is provided with a horizontal adjustment nut which is in rigid overlap joint with the permanent magnet; a force measurement rod of the longitudinal pull pressure sensor passes through and is fixed on the non-magnetic ring, and the end of the force measurement rod of the longitudinal pull pressure sensor in the non-magnetic ring is provided with a longitudinal adjustment nut which is in rigid overlap joint with the permanent magnet; a horizontal non-magnetic adjusting screw rod arranged on the installation frame is in overlap joint with the permanent magnet; and a longitudinal non-magnetic adjusting screw rod arranged on the installation frame is in overlap joint with the permanent magnet.
Description
Technical field
The invention belongs to mgnetic observations device technique field, be specifically related to magnet or superconductor when stressed, it is at three suffered component of direction jig of Measurement accuracies simultaneously.
Technical background
Magnetic levitation technology is one of new and high technology of paying close attention to most of people always.The magnetic levitation of Four types is arranged at present, the one, the normal conducting type magnetic levitation take Germany as representative, the 2nd, the superconduction take Japan as representative is electrically driven, magnetically levitated, and the 3rd, the permanent magnetism magnetic suspension of our country's exploitation, four are based on the high-temperature superconducting magnetic levitation of REBCO bulk.Front two kinds of magnetic levitation all need to provide magnetic levitation power by electric power, and then two kinds then is to realize magnetic levitation with the interaction force between superconductor and permanent magnetic material or permanent magnetic material and the permanent magnetic material, support without any need for other power.Although the maglev know-why of these several realizations is different with method, in the design and application process of magnetic suspension system, the important parameter that must consider when the stability of its magnetic suspension force size and magnetic suspension system is design.Therefore, the accurate measurement of system's magnetic suspension force characteristic had very important significance.
Aspect the magnetic suspension force test, each research unit basically usefulness all be the magnetic force proving installation of one dimension, international superconduction research centre such as U.S. Cornell university, University of Houston, Cincinnati university, Japan, the Beijing Non-Ferrous Metal Research General Academy of China, Xibei Inst. of Non-Ferrous Metals, Southwest Jiaotong University, Lanzhou University etc., wherein only have less unit to have the condition of the two dimension measured or three-dimensional magnetic force, such as Southwest Jiaotong University and Shaanxi Normal University, and the magnetic suspension force proving installation of constituent parts all is that oneself is made basically.The patent No. is 200310115111.9, denomination of invention is the patent of invention of " block high-temperature superconductor magnetic suspension force measurement mechanism and method of testing ", the patent No. is 01124792.4, denomination of invention is the patent of invention of " portable pressure measuring device ", the patent No. is 200720025946.9, denomination of invention is the utility model patent of " magnetic force surveying demonstration apparatus ", the patent No. is 200710005759, denomination of invention is the patent of invention of " pressure measurement transducer ", the patent No. is 200780022403.4, denomination of invention is in the patented technologies such as patent of invention of " transverse force measurement ", all can only measure the size of a direction power.The patent No. is 99117455.0, denomination of invention is the patent of invention of " high-temperature superconducting magnetic levitation method of testing ", the patent No. is 200610021654.8, denomination of invention is the patent of invention of " high-temperature superconducting magnetic levitation performance testing device and use the method for testing of this device ", can only measure the size of two direction power.Aspect three-dimensional magnetic force test, at present, the device that function ratio is more complete is that the patent No. of Shaanxi Normal University invention is 200410073501.9, the denomination of invention of invention is " three-dimensional magnetic field and magnetic testing device " patent of invention, although this device can be good at measuring stressed three directions of magnet or superconductor, but because they are when mgnetic observations, adopted a pull pressure sensor to the Z axis force measurement, 4 pressure transducers have shared 5 power sensors and have realized the Three-Dimensional Magnetic force measurement respectively to X and Y-direction force measurement.In this device, the force measurement part-structure is complicated, circuit is complicated, particularly a horizontal direction force measurement has been adopted two pressure transducers, so that the analysis difficulty of this direction actual loading is strengthened, work efficiency is not high.
Summary of the invention
Technical matters to be solved by this invention is to overcome the shortcoming of above-mentioned magnetic force proving installation, provide a kind of simple in structure, easy to operate, measure accurately, the three-dimensional magnetic measurement fixture of high efficiency.
Solving the problems of the technologies described above the technical scheme that adopts is: be provided with vertical pull pressure sensor at the erecting frame upper surface, lateral inner surface is provided with horizontal pull pressure sensor, vertical pull pressure sensor, the lower surface of erecting frame is provided with the magnet fixed head, the dynamometer link of vertical pull pressure sensor and erecting frame and magnet fixed head link, the below of magnet fixed head is provided with the non-magnetic ring that maintains distance with erecting frame and magnet fixed head, be provided with permanent magnet in the non-magnetic ring, be provided with the identical steel ball of diameter between permanent magnet and the magnet fixed head, laterally the dynamometer link of pull pressure sensor passes and is fixed on the non-magnetic ring, its end in non-magnetic ring is provided with the lateral adjustments nut, lateral adjustments nut and permanent magnet rigidity overlap joint, vertically the dynamometer link of pull pressure sensor passes and is fixed on the non-magnetic ring, its end in non-magnetic ring is provided with vertical setting nut, vertically setting nut and permanent magnet rigidity overlap, laterally be processed with the aperture greater than the cross through hole of horizontal non magnetic adjusting screw(rod) external diameter on the dynamometer link center line extending direction of pull pressure sensor on the erecting frame, horizontal non magnetic adjusting screw(rod) passes cross through hole, pass and be fixed on the non-magnetic ring, its end and permanent magnet rigidity overlap joint in non-magnetic ring, vertically be processed with the aperture greater than the longitudinal hole of vertical non magnetic adjusting screw(rod) external diameter on the dynamometer link center line extending direction of pull pressure sensor on the erecting frame, vertical non magnetic adjusting screw(rod) passes longitudinal hole, pass and be fixed on the non-magnetic ring, its end and permanent magnet rigidity overlap joint in non-magnetic ring.
The center line of the dynamometer link of vertical pull pressure sensor of the present invention and the center line of permanent magnet coincide, laterally the center line of the dynamometer link of pull pressure sensor and the center line of horizontal non magnetic adjusting screw(rod) coincide, vertically the center line of the dynamometer link of pull pressure sensor and the center line of vertical non magnetic adjusting screw(rod) coincide, and laterally the center line of the dynamometer link of pull pressure sensor is mutually vertical in same plane with the measuring staff center line of vertical pull pressure sensor.
Non-magnetic ring of the present invention is copper ring or aluminium ring or resin ring, 4 screw or the through hole of the porose heart line of uniform processing in same plane on the sidewall of non-magnetic ring 1/2nd height.
Erecting frame of the present invention is L shaped, vertical pull pressure sensor and vertically pull pressure sensor be arranged on erecting frame long-armed, laterally pull pressure sensor is arranged on the galianconism of erecting frame.
The model of vertical pull pressure sensor of the present invention, horizontal pull pressure sensor, vertical pull pressure sensor is TJL-1.
Magnet fixed head of the present invention is magnetic sheet.
It is vertical force sensor, transverse force sensor, the longitudinal force sensor of TJL-1 that the present invention has adopted model, can receive pulling force signal and pressure signal, the power sensor of this model, measure three-dimensional force, three power sensors have only been used, reduce the volume of testing tool, reduced the cost of testing tool; The present invention adopts horizontal non magnetic adjusting screw(rod), vertical non magnetic adjusting screw(rod) and erecting frame contactless, the center line of permanent magnet coincides with the center line of the non-magnetic ring of periphery, when the present invention is installed in that permanent magnet is stressed on the three-dimensional magnetic field and magnetic testing device, three-dimensional magnetic field and magnetic testing device can be measured stressed in X, Y, Z direction of permanent magnet exactly, has greatly improved the measuring accuracy of three-dimensional magnetic field and magnetic testing device.
Description of drawings
Fig. 1 is the front view of one embodiment of the invention
Fig. 2 is the left view of Fig. 1
Fig. 3 is the vertical view of Fig. 1
Fig. 4 is the A-A cut-open view of Fig. 3
Fig. 5 is the cut-open view of the B-B face of Fig. 3
Fig. 6 is the change curve of lateral stressed and vertical distance when superconductor and permanent magnet 3 is along vertical relative motion under the axisymmetric condition.
Fig. 7 is the change curve of longitudinal stress and vertical distance when superconductor and permanent magnet 3 is along vertical relative motion under the axisymmetric condition.
Fig. 8 is the change curve of vertical applied force and vertical distance when superconductor and permanent magnet 3 is along vertical relative motion under the axisymmetric condition.
Fig. 9 is the change curve of lateral stressed and vertical distance when superconductor and permanent magnet 3 is along vertical relative motion under the axle asymmetric case.
Figure 10 is the change curve of longitudinal stress and vertical distance when superconductor and permanent magnet 3 is along vertical relative motion under the axle asymmetric case.
Figure 11 is the change curve of vertical applied force and vertical distance when superconductor and permanent magnet 3 is along vertical relative motion under the axle asymmetric case.
Figure 12 is in the constant situation of rotational symmetry, permanent magnet 3 and the vertical spacing 3mm of superconductor, when permanent magnet 3 with respect to superconductor during along transverse movement, the change curve of the lateral stressed and transversal displacement of magnet.
Figure 13 is in the constant situation of rotational symmetry, permanent magnet 3 and the vertical spacing 3mm of superconductor, when permanent magnet 3 with respect to superconductor during along transverse movement, the longitudinal stress of magnet and the change curve of transversal displacement.
Figure 14 is in the constant situation of rotational symmetry, permanent magnet 3 and the vertical spacing 3mm of superconductor, when permanent magnet 3 with respect to superconductor during along transverse movement, the vertical applied force of magnet and the change curve of transversal displacement.
Embodiment
The present invention is described in more detail below in conjunction with drawings and Examples, but the invention is not restricted to these embodiment.
In Fig. 1～5, the three-dimensional magnetic measurement fixture of present embodiment is made of erecting frame 1, vertical pull pressure sensor 2, permanent magnet 3, vertical non magnetic adjusting screw(rod) 4, horizontal non magnetic adjusting screw(rod) 5, horizontal pull pressure sensor 6, non-magnetic ring 7, lateral adjustments nut 8, magnet fixed head 9, steel ball 10, vertical setting nut 11,12 connections of vertical pull pressure sensor.
The erecting frame 1 of present embodiment is L shaped, at the long-armed rear side upper surface of erecting frame 1 with the non magnetic screw threads for fastening connector vertical pull pressure sensor 2 that has been fixedly connected, the model of vertical pull pressure sensor 2 is TJL-1, vertical pull pressure sensor 2 is used for receiving vertical tension and pressure signal, converts the force signal of vertical direction to electric signal output.On the long-armed installed in front frame 1 of erecting frame 1 with non magnetic screw threads for fastening connector vertical pull pressure sensor 12 that has been fixedly connected, vertically the model of pull pressure sensor 12 is TJL-1, and vertical pull pressure sensor 12 longitudinally force signal converts electric signal output to.With the non magnetic screw threads for fastening connector horizontal pull pressure sensor 6 that has been fixedly connected, laterally the model of pull pressure sensor 6 is TJL-1 on the galianconism installed in front frame 1 of erecting frame 1, and laterally pull pressure sensor 6 will horizontal force signal converts electric signal to and exports.Vertical pull pressure sensor 2, horizontal pull pressure sensor 6, vertically pull pressure sensor 12 is the commodity of selling on the market, produced by sky, Bangbu optical sensor company limited, this power sensor, can receive pulling force signal and pressure signal, the present invention has adopted the force sensor measuring magnet of this model stressed, three power sensors have only been used, reduced the volume of testing tool, avoided the complex process (be jig in 200410073501.9 products with respect to the patent No.) to Measurement and Data Processing, improved measurement efficient, reduced the cost of testing tool, measured when having realized the three-dimensional magnetic force of stressed magnet.The lower surface of erecting frame 1 is with the non magnetic screw threads for fastening connector magnet fixed head 9 that has been fixedly connected, the magnet fixed head 9 of present embodiment is iron plate, also can adopt steel plate, the vertical dynamometer link of vertical pull pressure sensor 2 links by the magnet fixed head 9 of screw thread and erecting frame 1 and its lower surface.The below absorption of magnet fixed head 9 has at permanent magnet 3, and the permanent magnet 3 of present embodiment is cylindrical, and the center line of the dynamometer link of vertical pull pressure sensor 2 and the center line of permanent magnet 3 coincide.Between the upper surface of permanent magnet 3 and magnet fixed head 99 steel balls 10 that diameter is identical are installed, steel ball 10 is used for reducing the friction force between permanent magnet 3 and the magnet fixed head 9.The outer race of permanent magnet 3 is equipped with non-magnetic ring 7, non-magnetic ring 7 and erecting frame 1, maintain distance between magnet fixed head 9 and the permanent magnet 3, the non-magnetic ring 7 of present embodiment is copper ring, the porose heart line of uniform processing orthogonal 4 screws in same plane on the sidewall of non-magnetic ring 1/7th two height, also can process 4 perpendicular through holes of pore-forming heart line, laterally the dynamometer link of pull pressure sensor 6 passes and passes through thread connection with non-magnetic ring 7, laterally the end of dynamometer link in non-magnetic ring 7 of pull pressure sensor 6 is equipped with lateral adjustments nut 8 by thread connection, lateral adjustments nut 8 and permanent magnet 3 rigidity overlap joint; Vertically the dynamometer link of pull pressure sensor 12 passes and passes through thread connection with non-magnetic ring 7, vertically the end of dynamometer link in non-magnetic ring 7 of pull pressure sensor 12 is equipped with vertical setting nut 11 by thread connection, vertically setting nut 11 and permanent magnet 3 rigidity overlap joint.Laterally the dynamometer link center line extending direction of pull pressure sensor 6 is processed with the aperture greater than the cross through hole of horizontal non magnetic adjusting screw(rod) 5 external diameters on erecting frame 1, horizontal non magnetic adjusting screw(rod) 5 passes cross through hole, pass and pass through thread connection with non-magnetic ring 7, horizontal non magnetic adjusting screw(rod) 5 maintains distance with cross through hole, improved and measured the stressed degree of accuracy of magnet, end and the permanent magnet 3 rigidity overlap joint of horizontal non magnetic adjusting screw(rod) 5 in non-magnetic ring 7, laterally the center line of the dynamometer link of pull pressure sensor 6 and the center line of horizontal non magnetic adjusting screw(rod) 5 coincide; Vertically the dynamometer link center line extending direction of pull pressure sensor 12 is processed with the aperture greater than the longitudinal hole of vertical non magnetic adjusting screw(rod) 4 external diameters on erecting frame 1, vertical non magnetic adjusting screw(rod) 4 passes longitudinal hole, pass and pass through thread connection with non-magnetic ring 7, vertical non magnetic adjusting screw(rod) 4 maintains distance with longitudinal hole, end and the permanent magnet 3 rigidity overlap joint of vertical non magnetic adjusting screw(rod) 4 in non-magnetic ring 7, vertically the center line of the dynamometer link of pull pressure sensor 12 and the center line of vertical non magnetic adjusting screw(rod) 4 coincide, and laterally the dynamometer link center line of pull pressure sensor 6 is mutually vertical in same plane with the measuring staff center line of vertical pull pressure sensor 12.
When changing the permanent magnet of different-diameter, can regulate horizontal non magnetic adjusting screw(rod) 5 and end and the permanent magnet 3 rigidity overlap joint of vertical non magnetic adjusting screw(rod) 4 in non-magnetic ring 7 on the non-magnetic ring 7, and regulate so that laterally the lateral adjustments nut 8 of the dynamometer link end of pull pressure sensor 6 and vertically vertical setting nut 11 and permanent magnet 3 rigidity overlap joint of the dynamometer link end of pull pressure sensor 12.
The non-magnetic ring 7 of present embodiment is the aluminium ring.The connecting relation of other parts and parts is identical with embodiment 1.
The non-magnetic ring 7 of present embodiment is the resin ring.The connecting relation of other parts and parts is identical with embodiment 1.
The course of work of the present invention is as follows:
Erecting frame 1 is installed on the three-dimensional magnetic field and magnetic testing device, permanent magnet 3 is attached together by steel ball 10 and magnet fixed head 9, make permanent magnet 3 just in time be positioned at vertical vertical pull pressure sensor 2 under, regulate the lateral adjustments nut 8 of the dynamometer link end of the horizontal pull pressure sensor 6 on the non-magnetic ring 7, vertical setting nut 11 of the dynamometer link end of vertical pull pressure sensor 12, horizontal non magnetic adjusting screw(rod) 5, vertical non magnetic adjusting screw(rod) 4 and permanent magnet 3 overlap joints, another permanent magnet or superconductor are fixed in the anchor clamps on the workbench (the utensil domestic demand is injected liquid nitrogen during with superconductor, method of operating and the patent No. are that 200410073501.9 product is identical), Mobile mounting rack 1, regulate the position of permanent magnet 3 and another permanent magnet or superconductor, another permanent permanent magnet or superconductor are fixed, horizontal pull pressure sensor 6, vertical pull pressure sensor 12, vertical pull pressure sensor 2 connects respectively ± the 10V constant voltage source, and the output terminal of three sensors is received respectively computing machine by the signal condition module and carried out data acquisition.When permanent magnet 3 moves together along with erecting frame 1, another permanent magnet or superconductor act on magnetic force to the permanent magnet 3 that is installed on the non-magnetic ring 7, laterally pull pressure sensor 6, vertically pull pressure sensor 12, vertical pull pressure sensor 2 will receive respectively permanent magnet 3 suffered transverse force, longitudinal force, vertical forces and convert electric signal to and convert digital signal to through conditioning module and output to computing machine, computing machine calculates according to the program of prior setting, calculates the interaction force between another permanent magnet or superconductor and the permanent magnet 3.
In order to verify beneficial effect of the present invention, the inventor adopts the three-dimensional magnetic measurement fixture of the embodiment of the invention 1 preparation to be installed on the three-dimensional magnetic field and magnetic testing device the three-dimensional magnetic force between permanent magnet 3 and the superconductor is tested, and various experiment situations are as follows:
1, the three-dimensional magnetic force of test permanent magnet 3 and superconductor under the axisymmetric condition
Erecting frame 1 is installed on the three-dimensional magnetic field and magnetic testing device, permanent magnet 3 is attached together by steel ball 10 and magnet fixed head 9, permanent magnet 3 be positioned at vertical pull pressure sensor 2 under, lateral adjustments nut 8 on the dynamometer link of the horizontal pull pressure sensor 6 on the adjusting non-magnetic ring 7, make lateral adjustments nut 8 and permanent magnet 3 overlap joints, vertical setting nut 11 on the dynamometer link of vertical pull pressure sensor 12, make vertical setting nut 11 and permanent magnet 3 rigidity overlap joint, and regulate horizontal non magnetic adjusting screw(rod) 5 and vertical non magnetic adjusting screw(rod) 4 and permanent magnet 3 overlap joints, superconductor is fixed in the workbench anchor clamps of three-dimensional magnetic field and magnetic testing device, and interior injection liquid nitrogen, Mobile mounting rack 1, regulate the position of permanent magnet 3 and superconductor, superconductor is fixed, regulated permanent magnet 3 and superconductor on the same axis.Laterally pull pressure sensor 6, vertical pull pressure sensor 12, vertical pull pressure sensor 2 connect respectively ± the 10V constant voltage source, and the output terminal of three sensors is received respectively computing machine by the signal condition module and carried out data acquisition.Downwards, upwards back and forth movement is once along with erecting frame 1 when permanent magnet 3, superconductor acts on magnetic force to the permanent magnet 3 that is installed on the non-magnetic ring 7, laterally pull pressure sensor 6, vertically pull pressure sensor 12, vertical pull pressure sensor 2 convert transverse force, longitudinal force, the vertical force that receives to respectively electric signal and output to conditioning module and convert digital signal to and output to computing machine, computing machine calculates according to the program of prior setting, calculates the interaction force between superconductor and the permanent magnet 3.Experimental result is seen Fig. 6～Fig. 8.
Fig. 6 is the change curve of lateral stressed and vertical distance when superconductor and permanent magnet are along vertical relative motion under the axisymmetric condition.Fig. 7 is the change curve of longitudinal stress and vertical distance when superconductor and permanent magnet are along vertical relative motion under the axisymmetric condition.Fig. 8 is the change curve of vertical applied force and vertical distance when superconductor and permanent magnet are along vertical relative motion under the axisymmetric condition.By Fig. 6～Fig. 8 as seen, in the situation of full symmetric, vertical magnetic force with the change of distance between permanent magnet 3 and the superconductor clearly, laterally, magnetic force is 0 longitudinally.
Superconductor in this experiment also available permanent magnet is replaced.
2, the three-dimensional magnetic force of test permanent magnet and superconductor in the non-title situation of axle
Erecting frame 1 is installed on the three-dimensional magnetic field and magnetic testing device, permanent magnet 3 is attached together by steel ball and iron plate, permanent magnet 3 be positioned at the vertical force sensor under, lateral adjustments nut 8 on the dynamometer link of the horizontal pull pressure sensor 6 on the adjusting non-magnetic ring 7, make lateral adjustments nut 8 and permanent magnet 3 overlap joints, vertical setting nut 11 on the dynamometer link of vertical pull pressure sensor 12, make vertical setting nut 11 and permanent magnet 3 rigidity overlap joint, and regulate horizontal non magnetic adjusting screw(rod) 5 and vertical non magnetic adjusting screw(rod) 4 and permanent magnet 3 overlap joints, superconductor is fixed in the workbench anchor clamps of three-dimensional magnetic field and magnetic testing device, and interior injection liquid nitrogen, superconductor is fixed, Mobile mounting rack 1 is regulated permanent magnet 3 and superconductor not on the same axis.Other experiment is identical with experiment 1.Experimental result is seen Fig. 9～11.
Fig. 9 is the change curve of lateral stressed and vertical distance when superconductor and permanent magnet are along vertical relative motion under the axle asymmetric case.Figure 10 is the change curve of longitudinal stress and vertical distance when superconductor and permanent magnet are along vertical relative motion under the axle asymmetric case.Figure 11 is the change curve of vertical applied force and vertical distance when superconductor and permanent magnet are along vertical relative motion under the axle asymmetric case.By Fig. 9～11 as seen, in asymmetric situation, vertical, laterally, longitudinal magnetism is very sensitive with the change of distance between permanent magnet 3 and the superconductor.
3, the three-dimensional magnetic force of test permanent magnet 3 and superconductor in the constant situation of rotational symmetry, permanent magnet 3 and the vertical spacing 3mm of superconductor
Erecting frame 1 is installed on the three-dimensional magnetic field and magnetic testing device, permanent magnet 3 is attached together by steel ball and iron plate, permanent magnet 3 be positioned at the vertical force sensor under, lateral adjustments nut 8 on the dynamometer link of the horizontal pull pressure sensor 6 on the adjusting non-magnetic ring 7, make lateral adjustments nut 8 and permanent magnet 3 overlap joints, vertical setting nut 11 on the dynamometer link of vertical pull pressure sensor 12, make vertical setting nut 11 and permanent magnet 3 rigidity overlap joint, and regulate horizontal non magnetic adjusting screw(rod) 5 and vertical non magnetic adjusting screw(rod) 4 and permanent magnet 3 overlap joints, superconductor is fixed in the workbench anchor clamps of three-dimensional magnetic field and magnetic testing device, and interior injection liquid nitrogen, superconductor is fixed, Mobile mounting rack 1, regulate permanent magnet 3 and superconductor on the same axis, keeping the vertical distance of permanent magnet 3 and superconductor in the measuring process is 3mm.Other experiment is 1 identical with experiment, when permanent magnet 3 along with erecting frame 1 edge laterally to the right, left, more to the right during the back and forth movement one-period, can obtain the interaction force between superconductor and the permanent magnet 3.Experimental result is seen Figure 12～14.
Figure 12 is in the constant situation of rotational symmetry, permanent magnet 3 and the vertical spacing 3mm of superconductor, when permanent magnet 3 with respect to superconductor during along transverse movement, the change curve of the lateral stressed and transversal displacement of magnet.Figure 13 is in the constant situation of rotational symmetry, permanent magnet 3 and the vertical spacing 3mm of superconductor, when permanent magnet 3 with respect to superconductor during along transverse movement, the longitudinal stress of magnet and the change curve of transversal displacement.Figure 14 is in the constant situation of rotational symmetry, permanent magnet 3 and the vertical spacing 3mm of superconductor, when permanent magnet 3 with respect to superconductor during along transverse movement, the vertical applied force of magnet and the change curve of transversal displacement.By Figure 12～14 as seen, in the situation of almost symmetry, vertical magnetic force, laterally the variation of magnetic force and lateral separation is very sensitive, and longitudinal magnetism is very weak, only has that longitudinal magnetism just can be 0 in the full symmetric situation.
Claims (6)
1. three-dimensional magnetic measurement fixture, it is characterized in that: be provided with vertical pull pressure sensor (2) at erecting frame (1) upper surface, lateral inner surface is provided with horizontal pull pressure sensor (6), vertical pull pressure sensor (12), the lower surface of erecting frame (1) is provided with magnet fixed head (9), the dynamometer link of vertical pull pressure sensor (2) and erecting frame (1) and magnet fixed head (9) link, the below of magnet fixed head (9) is provided with the non-magnetic ring (7) that maintains distance with erecting frame (1) and magnet fixed head (9), be provided with permanent magnet (3) in the non-magnetic ring (7), be provided with the identical steel ball of diameter (10) between permanent magnet (3) and the magnet fixed head (9), laterally the dynamometer link of pull pressure sensor (6) passes and is fixed on the non-magnetic ring (7), its end in non-magnetic ring (7) is provided with lateral adjustments nut (8), lateral adjustments nut (8) and permanent magnet (3) rigidity overlap joint, vertically the dynamometer link of pull pressure sensor (12) passes and is fixed on the non-magnetic ring (7), its end in non-magnetic ring (7) is provided with vertical setting nut (11), vertically setting nut (11) overlaps with permanent magnet (3) rigidity, be processed with the aperture greater than the cross through hole of horizontal non magnetic adjusting screw(rod) (5) external diameter on the dynamometer link center line extending direction of the upper horizontal pull pressure sensor (6) of erecting frame (1), horizontal non magnetic adjusting screw(rod) (5) passes cross through hole, pass and be fixed on the non-magnetic ring (7), its end and permanent magnet (3) rigidity overlap joint in non-magnetic ring (7), be processed with the aperture greater than the longitudinal hole of vertical non magnetic adjusting screw(rod) (4) external diameter on the dynamometer link center line extending direction of the upper vertical pull pressure sensor (12) of erecting frame (1), vertical non magnetic adjusting screw(rod) (4) passes longitudinal hole, pass and be fixed on the non-magnetic ring (7), its end and permanent magnet (3) rigidity overlap joint in non-magnetic ring (7).
2. according to three-dimensional magnetic measurement fixture claimed in claim 1, it is characterized in that: the center line of the center line of the dynamometer link of described vertical pull pressure sensor (2) and permanent magnet (3) coincides, laterally the center line of the dynamometer link of pull pressure sensor (6) and the center line of horizontal non magnetic adjusting screw(rod) (5) coincide, vertically the center line of the dynamometer link of pull pressure sensor (12) and the center line of vertical non magnetic adjusting screw(rod) (4) coincide, and laterally the center line of the dynamometer link of pull pressure sensor (6) is mutually vertical in same plane with the measuring staff center line of vertical pull pressure sensor (12).
3. according to three-dimensional magnetic measurement fixture claimed in claim 1, it is characterized in that: described non-magnetic ring (7) is copper ring or aluminium ring or resin ring, 4 screw or the through hole of the porose heart line of uniform processing in same plane on the sidewall of non-magnetic ring (7) 1/2nd height.
4. according to three-dimensional magnetic measurement fixture claimed in claim 1, it is characterized in that: described erecting frame (1) is for L shaped, vertical pull pressure sensor (2) and vertically pull pressure sensor (12) be arranged on erecting frame (1) long-armed, horizontal pull pressure sensor (6) is arranged on the galianconism of erecting frame (1).
5. according to claim 1 or 2 or 4 described three-dimensional magnetic measurement fixtures, it is characterized in that: the model of described vertical pull pressure sensor (2), horizontal pull pressure sensor (6), vertical pull pressure sensor (12) is TJL-1, is produced by sky, Bangbu optical sensor company limited.
6. according to three-dimensional magnetic measurement fixture claimed in claim 1, it is characterized in that: described magnet fixed head (9) is magnetic sheet.
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| CN 201110053985 CN102192807B (en) | 2011-03-07 | 2011-03-07 | Three-dimensional magnetic measurement fixture |
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| CN 201110053985 CN102192807B (en) | 2011-03-07 | 2011-03-07 | Three-dimensional magnetic measurement fixture |
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| CN102192807B true CN102192807B (en) | 2013-03-20 |
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| CN109164402B (en) * | 2018-08-17 | 2024-03-29 | 珠海博杰电子股份有限公司 | High-precision magnetic force test equipment |
| CN111489878B (en) * | 2020-04-26 | 2021-11-05 | 山东鲁磁工业科技有限公司 | U-shaped demagnetizer |
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| WO2003029921A2 (en) * | 2001-09-28 | 2003-04-10 | University Of North Carolina At Chapel Hill | Methods and systems for three-dimensional motion control and tracking of a mechanically unattached magnetic probe |
| CN1204384C (en) * | 2003-04-09 | 2005-06-01 | 中国科学院合肥智能机械研究所 | Multidimension force sensor dynamic experimental table and its method |
| CN100360952C (en) * | 2004-12-28 | 2008-01-09 | 陕西师范大学 | Testing device for magnetic field and magnetic force in three-dimensional space |
| CN100495063C (en) * | 2006-08-26 | 2009-06-03 | 西南交通大学 | Testing device of magnetic suspension of high-temperature superconductor, and testing method for using the device |
| CN100445713C (en) * | 2006-11-20 | 2008-12-24 | 西南交通大学 | Testing apparatus for high temperature, superconducting, magnetic suspension and dynamic performance and testing method with the same |
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