Magnetic field measuring device

Abstract

The utility model discloses a magnetic field measuring device. The magnetic field measuring device comprises a base used for supporting a multi-pole magnet to be measured; the first rotating disc and the second rotating disc are oppositely arranged on the base and are rotationally connected with the base, and the axis of the first rotating disc coincides with the axis of the second rotating disc; the first positioning tool is connected to the side, facing the second rotary disc, of the first rotary disc. The second positioning tool is connected to the side, facing the first rotary disc, of the second rotary disc. The first positioning tool is provided with a plurality of first limiting points, the second positioning tool is provided with a plurality of second limiting points which are in one-to-one correspondence with the plurality of first limiting points, the wires are wound around the corresponding first limiting points and the second limiting points and penetrate through the multi-pole magnet to be detected, and the parts, located between the first limiting points and the second limiting points, of the wires are parallel to the axis of the first rotating disc. The distance between the first rotating disc and the axis of the first rotating disc is smaller than the inner circumference radius of the to-be-measured multi-pole magnet. The magnetic field measuring device reduces the production and use cost.

Description

Technical Field

[0001] This utility model relates to the field of multipole magnet technology, and in particular to a magnetic field measuring device. Background Technology

[0002] Rotating coil measurement is the most commonly used method for measuring the magnetic field of multipole magnets in accelerators. A traditional rotating coil measurement system consists of a measuring coil, a coil support and adjustment platform, a motor drive unit, an integrator, and other sub-equipment. The motor drives the measuring coil to rotate within the magnet's aperture. The measuring coil cuts magnetic lines of force, generating an induced voltage signal. The signal acquisition equipment collects the induced voltage signal and integrates it piecewise according to the encoder angle trigger, thereby obtaining the waveform of the magnetic flux through the coil as a function of spatial angle. Subsequent data processing yields relevant magnetic field information such as the gradient integrated field, magnetic center, and spatial harmonics.

[0003] However, the manufacturing process of the measuring coil is complex and requires high precision, resulting in high production costs. In addition, once the measuring coil is manufactured, there is an optimal value limit for the aperture of the measuring magnet, meaning it is not universally applicable to all magnets. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a magnetic field measuring device with low production cost, and which can be adapted to the aperture of the magnet being measured with corresponding low-cost parts, thereby reducing application costs.

[0005] This application provides a magnetic field measuring device, comprising: a base for supporting a multipole magnet to be measured; a first turntable and a second turntable, the first turntable and the second turntable being disposed opposite to each other on the base and rotatably connected to the base, the axis of the first turntable coinciding with the axis of the second turntable; a first positioning fixture and a second positioning fixture, the first positioning fixture being connected to the side of the first turntable facing the second turntable, and the second positioning fixture being connected to the side of the second turntable facing the first turntable; the first positioning fixture having a plurality of first limiting points, the second positioning fixture having a plurality of second limiting points corresponding one-to-one with the plurality of first limiting points, a wire passing around the corresponding first limiting point and the second limiting point, and passing through the multipole magnet to be measured, the wire located between the first limiting point and the second limiting point being parallel to the axis of the first turntable, and the distance between the wire and the axis of the first turntable being less than the inner circumference radius of the multipole magnet to be measured.

[0006] According to the magnetic field measuring device of this application embodiment, a wire is wound around a first limiting point on a first positioning fixture and a second limiting point on a second positioning fixture, and a multipole magnet to be measured is threaded through it. Simultaneously, the wire located between the first and second limiting points is parallel to the axis of a first turntable, and the distance between the wire and the axis of the first turntable is less than the inner radius of the multipole magnet to be measured. Thus, the wire can rotate around the axis of the first turntable with a radius smaller than the inner radius of the multipole magnet to be measured, driven by the first and second turntables, to cut the magnetic field lines of the multipole magnet to be measured. A voltage signal is acquired when the wire cuts the magnetic field lines, and magnetic field information can be ultimately obtained from the voltage signal. Compared with the rotating coil in the prior art, this measuring device has a lower production cost, and the positions of the first and second limiting points on the first and second positioning fixtures can be changed as needed to apply to multipole magnets with different inner diameters, thus improving the application range and reducing the cost of use.

[0007] In one possible implementation of this application, the first limiting site includes first limiting site I, first limiting site II, first limiting site III, and first limiting site IV, and the second limiting site includes corresponding second limiting site I, second limiting site II, second limiting site III, and second limiting site IV;

[0008] The distance between the wire between the first limiting point I and the second limiting point I and the axis of the first turntable is R1;

[0009] The distance between the wire between the first limiting point II and the second limiting point II and the axis of the first turntable is R2;

[0010] The distance between the guide wire between the first limiting point III and the second limiting point III and the axis of the first turntable is R3;

[0011] The distance between the guide wire between the first limiting point IV and the second limiting point IV and the axis of the first turntable is R4;

[0012] Among them, R1, R2, R3, and R4 are all different.

[0013] In one possible implementation of this application, the wire includes a first wire and a second wire;

[0014] The first conductor passes sequentially around the second limiting point I, the first limiting point I, the first limiting point II, and the second limiting point II;

[0015] The second conductor passes sequentially around the second limiting point III, the first limiting point III, the first limiting point IV, and the second limiting point IV.

[0016] In one possible implementation of this application, the first positioning fixture includes a first positioning member, the first positioning member is provided with a first groove, the first groove includes a first bottom surface and a first side surface a and a first side surface b perpendicular to the first bottom surface;

[0017] The second positioning fixture includes a second positioning member, which has a second groove corresponding to the first groove. The second groove includes a second bottom surface and a second side surface a and a second side surface b perpendicular to the second bottom surface.

[0018] The first side a and the second side a are in the same plane, the first side b and the second side b are in the same plane, and the first bottom surface and the second bottom surface are in the same plane;

[0019] The first limiting point I is located at the intersection line 1 of the first side a and the first bottom surface; the first limiting point III is located at the intersection line 2 of the first side b and the first bottom surface; the second limiting point I is located at the intersection line 3 of the second side a and the second bottom surface; and the second limiting point III is located at the intersection line 4 of the second side b and the second bottom surface.

[0020] In one possible implementation of this application, the first positioning member is provided with a third groove, the third groove including a third bottom surface and a third side surface a and a third side surface b perpendicular to the third bottom surface;

[0021] The second positioning fixture includes a second positioning component, which has a fourth groove corresponding to the third groove. The fourth groove includes a fourth bottom surface and a fourth side surface a and a fourth side surface b perpendicular to the fourth bottom surface.

[0022] The third side surface a and the fourth side surface a are in the same plane, the third side surface b and the fourth side surface b are in the same plane, and the third bottom surface and the fourth bottom surface are in the same plane;

[0023] The first limiting point IV is located at the intersection line 5 of the third side surface a and the third bottom surface; the first limiting point II is located at the intersection line 6 of the third side surface b and the third bottom surface; the second limiting point IV is located at the intersection line 7 of the fourth side surface a and the fourth bottom surface; and the second limiting point II is located at the intersection line 8 of the fourth side surface b and the fourth bottom surface.

[0024] In one possible implementation of this application, the first positioning fixture further includes a first bottom pressure fitting member, which is spaced apart on the side of the first positioning member facing the first turntable. Along the axial direction of the first turntable, the projection of the first bottom surface is located on the first bottom pressure fitting member.

[0025] The second positioning fixture also includes a second bottom pressure fitting component, which is spaced apart on the side of the second positioning component facing the second turntable. Along the axial direction of the second turntable, the projection of the second bottom surface is located on the second bottom pressure fitting component.

[0026] In one possible implementation of this application, the first positioning fixture further includes a first side-pressing fitting component, which is provided with at least four first limiting grooves, and the at least four first limiting grooves respectively limit the first limiting point I, the first limiting point II, the first limiting point III and the first limiting point IV.

[0027] In one possible implementation of this application, one of the first turntable and the second turntable is provided with a wiring component, and the other is provided with a winding component, the winding component including a first winding component and a second winding component;

[0028] One end of the first wire is connected to the connector, and the other end is sequentially wound around the second limiting point I, the first limiting point I, the first winding member, the first limiting point II, and the second limiting point II, and then connected to the connector.

[0029] One end of the second wire is connected to the connector, and the other end is sequentially wound around the second limiting point III, the first limiting point III, the second winding member, the first limiting point IV, and the second limiting point IV, and then connected to the connector.

[0030] In one possible implementation of this application, a tension adjusting member is further included, which is movably connected to the first turntable along a direction perpendicular to the axis of the first turntable, and the winding member is connected to the first turntable through the tension adjusting member.

[0031] In one possible implementation of this application, a guide component is also included;

[0032] The tension adjusting member and the first positioning fixture are spaced apart along the axis of the first turntable. Along a direction perpendicular to the axis of the first turntable, the guide member is spaced apart on the side of the tension adjusting member facing the first positioning fixture.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1This is a schematic diagram of the structure of the magnetic field measuring device according to an embodiment of the present utility model;

[0036] Figure 2 This is a structural schematic diagram of some components of the magnetic field measuring device according to an embodiment of the present utility model at one angle;

[0037] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0038] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0039] Figure 5 This is a schematic diagram of the structure of some components in the magnetic field measuring device according to an embodiment of the present invention from another angle;

[0040] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0041] Figure 7 yes Figure 6 Enlarged view of point D in the middle;

[0042] Figure 8 This is a structural schematic diagram of the first turntable at one angle in the magnetic field measuring device according to an embodiment of the present invention.

[0043] Figure label:

[0044] Magnetic field measuring device 100

[0045] Base 10, First turntable 11, First winding component 110, Second winding component 111, Tension adjusting component 112, Guide component 113, Tension gauge 114, Second turntable 12, Connecting component 121, First bracket 13, Second bracket 14, First motor 15, Second motor 16, Tension adjusting bracket 17.

[0046] First restricted site 20, First restricted site I 21, First restricted site II 22, First restricted site III 23, First restricted site IV 24

[0047] Second restricted locus 30, Second restricted locus I 31, Second restricted locus II 32, Second restricted locus III 33, Second restricted locus IV 34

[0048] First positioning fixture 40, first positioning component 41, first groove 411, first bottom surface 4111, first side surface a 4112, first side surface b 4113, intersecting line one 4114, intersecting line two 4115, third groove 412, third bottom surface 4121, third side surface a 4122, third side surface b 4123, intersecting line five 4124, intersecting line six 4125, first bottom pressure fitting component 42, first side pressure fitting component 43, first limiting groove 431, first limiting groove I 4311, first limiting groove II 4312, first limiting groove III 4313, first limiting groove IV 4314.

[0049] Second positioning fixture 50, second positioning component 51, second groove 511, second bottom surface 5111, second side surface a 5112, second side surface b 5113, intersecting line three 5114, intersecting line four 5115, fourth groove 512, fourth bottom surface 5121, fourth side surface a 5122, fourth side surface b 5123, intersecting line seven 5124, intersecting line eight 5125, second bottom pressure fitting component 52, second side pressure fitting component 53, second limiting groove 531, second limiting groove I 5311, second limiting groove II 5312, second limiting groove III 5313, second limiting groove IV 5314.

[0050] Wire 60, first wire 61, second wire 62. Detailed Implementation

[0051] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0052] In the description of this utility model, it should be understood that the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] The following is a reference appendix. Figures 1-8 This application describes a magnetic field measuring device 100 according to an embodiment of the present application.

[0055] It includes a base 10, a first turntable 11 and a second turntable 12, as well as a first positioning fixture 40 and a second positioning fixture 50.

[0056] The base 10 is used to support the multipole magnet under test. For example, the base 10 may be provided with a magnet mounting bracket. The base 10 is also used to support the first turntable 11 and the second turntable 12. For example, the base 10 may be provided with a first bracket 13 for supporting the first turntable 11 and a second bracket 14 for supporting the second turntable 12.

[0057] It is understandable that the magnet mounting bracket and the base 10 can be integrally formed, fixedly connected, or detachably connected. The first bracket 13 and the base 10 can be integrally formed, fixedly connected, or detachably connected. The second bracket 14 and the base 10 can be integrally formed, fixedly connected, or detachably connected.

[0058] The first turntable 11 and the second turntable 12 are disposed opposite to each other on the base 10 so as to tension the wire 60 between the first turntable 11 and the second turntable 12. The first turntable 11 and the second turntable 12 are rotatably connected to the base 10 respectively, and the axis of the first turntable 11 coincides with the axis of the second turntable 12. In this way, the wire 60 connected between the first turntable 11 and the second turntable 12 can rotate under the drive of the first turntable 11 and the second turntable 12.

[0059] In some embodiments, the base 10 includes a left base, a middle base, and a right base. A first turntable 11 is disposed on the left base, a second turntable 12 is disposed on the right base, and the multipole magnet to be tested can be disposed on the middle base. The first turntable 11 can move relative to the left base, for example, it can move horizontally or vertically. The second turntable 12 can move relative to the left base, for example, it can move horizontally or vertically.

[0060] The first positioning fixture 40 is connected to the side of the first turntable 11 facing the second turntable 12, and the second positioning fixture 50 is connected to the side of the second turntable 12 facing the first turntable 11. That is, the first positioning fixture 40 and the second positioning fixture 50 are located between the first turntable 11 and the second turntable 12 and are arranged opposite to each other. In this way, the first positioning fixture 40 and the second fixture can position the wire 60 stretched between the first turntable 11 and the second turntable 12 so that the wire 60 can rotate with a certain radius.

[0061] The first positioning fixture 40 has multiple first limiting points 20, and the second positioning fixture 50 has multiple second limiting points 30 corresponding one-to-one with the multiple first limiting points 20. A wire 60 is wound around the corresponding first limiting points 20 and second limiting points 30 and passes through the multipole magnet to be tested. By winding the wire 60 around the first limiting points 20 and second limiting points 30, the wire 60 can be precisely positioned. The wire 60 located between the first limiting points 20 and second limiting points 30 is parallel to the axis of the first turntable 11. Thus, the wire 60 can rotate with the first turntable 11 and the second turntable 12 with a certain radius around the axis of the first turntable 11. The distance between the wire 60 and the axis of the first turntable 11 is less than the inner radius of the multipole magnet to be tested. This allows it to rotate inside the multipole magnet to be tested, cutting the magnetic field lines of the multipole magnet.

[0062] Therefore, referring to Figures 1-7 According to the magnetic field measuring device 100 of this application embodiment, a wire 60 is wound around a first limiting point 20 on a first positioning fixture 40 and a second limiting point 30 on a second positioning fixture 50, and a multipole magnet to be measured is passed through it. Simultaneously, the wire 60, located between the first limiting point 20 and the second limiting point 30, is parallel to the axis of a first turntable 11. The distance between the wire 60 and the axis of the first turntable 11 is less than the inner radius of the multipole magnet to be measured. Thus, the wire 60 can rotate around the axis of the first turntable 11 with a radius smaller than the inner radius of the multipole magnet to be measured, driven by the first and second turntables 12, to cut the magnetic field lines of the multipole magnet to be measured. A voltage signal is acquired when the wire 60 cuts the magnetic field lines, and magnetic field information can be ultimately obtained based on the voltage signal. Compared with the rotating coil in the prior art, this measuring device has a lower production cost, and the positions of the first limiting point 20 and the second limiting point 30 on the first positioning fixture 40 and the second fixture can be changed as needed to apply to multipole magnets with different inner diameters, thus improving the application range and reducing the cost of use.

[0063] In some embodiments, refer to Figure 1The magnetic field measuring device 100 also includes a drive assembly for driving the first turntable 11 and the second turntable 12 to rotate. Exemplarily, the drive assembly may include drive motors; for example, the drive motors may include a first motor 15 for driving the first turntable 11 to rotate and a second motor 16 for driving the second turntable 12 to rotate. Alternatively, the first turntable 11 and the second turntable 12 may be driven to rotate by a single drive motor. Correspondingly, the first motor 15 is connected to the first turntable 11 via a first reducer, and the second motor 16 is connected to the second turntable 12 via a second reducer.

[0064] In some embodiments, the magnetic field measuring device 100 further includes a signal transmission component for transmitting the voltage signal acquired when the conductor 60 cuts the magnetic field lines. Exemplarily, a first slip ring brush is connected between the first turntable 11 and the first reducer, and a second slip ring brush is connected between the second turntable 12 and the second reducer. At least one of the first and second slip ring brushes is connected to the conductor 60.

[0065] In some embodiments, the magnetic field measuring device 100 further includes a control system, which includes a signal acquisition module and a data processing module, etc. The signal acquisition module acquires voltage signals and transmits the voltage signals to the data processing module, and the data processing module obtains magnetic field information based on the voltage signals.

[0066] In some embodiments, the conductor 60 is a tension wire to better cut magnetic field lines. The tension wire can be made of materials such as titanium aluminum vanadium or beryllium copper.

[0067] In some embodiments of this application, reference is made to Figure 3 and Figure 6 The first limiting point 20 includes first limiting point I 21, first limiting point II 22, first limiting point III 23, and first limiting point IV 24; the second limiting point 30 includes corresponding second limiting point I 31, second limiting point II 32, second limiting point III 33, and second limiting point IV 34; the distance between the wire between the first limiting point I 21 and the second limiting point I 31 and the axis of the first turntable is R1; the distance between the wire between the first limiting point II 22 and the second limiting point II 32 and the axis of the first turntable is R2; the distance between the wire between the first limiting point III 23 and the second limiting point III 33 and the axis of the first turntable is R3; the distance between the wire between the first limiting point IV 24 and the second limiting point IV 34 and the axis of the first turntable is R4; wherein R1, R2, R3, and R4 are all different.

[0068] By setting different distances between the first limiting point I21 and the second limiting point I31, the first limiting point II22 and the second limiting point II32, the first limiting point III23 and the second limiting point III33, and the first limiting point IV24 and the second limiting point IV34 relative to the axis of the first turntable, the wire can cut magnetic field lines of different diameters to obtain different voltage signals, thus facilitating the acquisition of more magnetic field information.

[0069] Specifically, R1, R2, R3, and R4 can be in descending order as R1, R2, R3, and R4; or R1, R2, R4, and R3; or R1, R4, R2, and R3, etc.

[0070] In some embodiments of this application, reference is made to Figure 3 and Figure 6 The conductor includes a first conductor 61 and a second conductor 62; the first conductor 61 passes sequentially around the second limiting point I 31, the first limiting point I 21, the first limiting point II 22 and the second limiting point II 32; the second conductor 62 passes sequentially around the second limiting point III 33, the first limiting point III 23, the first limiting point IV 24 and the second limiting point IV 34.

[0071] The first conductor 61 passes sequentially through the second limiting point I 31, the first limiting point I 21, the first limiting point II 22, and the second limiting point II 32. In this way, both the input and output ends of the first conductor 61 are located within the first positioning fixture 40, reducing the number of wiring operations and making the overall tension of the first conductor 61 more uniform. Similarly, the second conductor 62 passes sequentially through the second limiting point III 33, the first limiting point III 23, the first limiting point IV 24, and the second limiting point IV 34. In this way, both the input and output ends of the second conductor 62 are located within the first positioning fixture 40, reducing the number of wiring operations and making the overall tension of the first conductor 61 more uniform.

[0072] Of course, it is understandable that multiple wires can also be set, that is, a wire can be connected between each corresponding first limit point 20 and second limit point 30.

[0073] In some embodiments of this application, reference is made to Figure 4 and Figure 7The first positioning fixture 40 includes a first positioning element 41, which has a first groove 411. The first groove 411 includes a first bottom surface 4111 and a first side surface a4112 and a first side surface b4113 perpendicular to the first bottom surface 4111. The second positioning fixture 50 includes a second positioning element 51, which has a second groove 511 corresponding to the first groove 411. The second groove 511 includes a second bottom surface 5111 and a second side surface a5112 and a second side surface b5113 perpendicular to the second bottom surface 5111. The first side surface a4112 and the second side surface a5113 are located on the same side surface. The plane has the first side surface b4113 and the second side surface b5113 on the same plane, and the first bottom surface 4111 and the second bottom surface 5111 on the same plane; the first limiting point I21 is located at the intersection line 1 4114 of the first side surface a4112 and the first bottom surface 4111, the first limiting point III23 is located at the intersection line 2 4115 of the first side surface b4113 and the first bottom surface 4111, the second limiting point I31 is located at the intersection line 3 5114 of the second side surface a5112 and the second bottom surface 5111, and the second limiting point III33 is located at the intersection line 4 5115 of the second side surface b5113 and the second bottom surface 5111.

[0074] By setting a first groove 411 in the first positioning member 41, the first limiting point I 21 and the first limiting point III 23 are respectively set at the intersection line 1 4114 of the first side surface a 4112 of the first groove 411 and the first bottom surface 4111 and the intersection line 2 4115 of the first side surface b 4113 of the first groove 411 and the first bottom surface 4111. This facilitates processing and also facilitates the limiting of the first wire 61 and the second wire 62. At the same time, one groove can form the first limiting point I 21 and the first limiting point III 23, which improves the utilization rate of the groove and reduces the processing cost.

[0075] Similarly, a second groove 511 is provided in the second positioning member 51, and the second limiting point I 31 and the second limiting point III 33 are respectively located at the intersection line III 5114 of the second side a 5112 of the second groove 511 and the intersection line IV 5115 of the second side b 5113 of the second groove 511 and the second bottom surface 5111. This facilitates processing and also facilitates the limiting of the first guide wire 61 and the second guide wire 62. At the same time, one groove can form the second limiting point I 31 and the second limiting point III 33, which improves the utilization rate of the groove and reduces the processing cost.

[0076] The first limiting point I21 is located at intersection line one 4114, the first limiting point III23 is located at intersection line two 4115, the second limiting point I31 is located at intersection line three 5114, and the second limiting point III33 is located at intersection line four 5115. This facilitates processing and design, while also increasing the contact area between the conductor and the limiting point, reducing the pressure of the limiting point on the conductor, making the conductor less prone to breakage, and extending the service life of the conductor.

[0077] In some embodiments, the first limiting point 20 and the second limiting point 30 may also be provided on a cylindrical limiting member, etc.

[0078] In some embodiments of this application, reference is made to Figure 4 and Figure 7 The first positioning member 41 is provided with a third groove 412, which includes a third bottom surface 4121 and a third side surface a4122 and a third side surface b4123 that are perpendicular to the third bottom surface 4121.

[0079] The second positioning fixture 50 includes a second positioning member 51. The second positioning member 51 is provided with a fourth groove 512 corresponding to the third groove 412. The fourth groove 512 includes a fourth bottom surface 5121 and a fourth side surface a5122 and a fourth side surface b5123 that are perpendicular to the fourth bottom surface 5121.

[0080] The third side a4122 and the fourth side a5122 are on the same plane, the third side b4123 and the fourth side b5123 are on the same plane, and the third bottom surface 4121 and the fourth bottom surface 5121 are on the same plane.

[0081] In some embodiments, the first bottom surface 4111, the second bottom surface 5111, the third bottom surface 4121, and the fourth bottom surface 5121 may all be on the same plane.

[0082] The first limiting point IV24 is located at the intersection line 4124 of the third side a4122 and the third bottom surface 4121; the first limiting point II22 is located at the intersection line 4125 of the third side b4123 and the third bottom surface 4121; the second limiting point IV34 is located at the intersection line 5124 of the fourth side a5122 and the fourth bottom surface 5121; and the second limiting point II32 is located at the intersection line 5125 of the fourth side b5123 and the fourth bottom surface 5121.

[0083] By setting a third groove 412 in the first positioning member 41, the first limiting point IV 24 and the first limiting point II 22 are respectively set at the intersection line 5 4124 of the third side a 4122 and the third bottom surface 4121 of the third groove 412 and the intersection line 6 4125 of the third side b 4123 and the third bottom surface 4121 of the third groove 412. This facilitates processing and also facilitates the limiting of the first wire 61 and the second wire 62. At the same time, one groove can form the first limiting point IV 24 and the first limiting point II 22, which improves the utilization rate of the groove and reduces the processing cost.

[0084] Similarly, a fourth groove 512 is provided in the second positioning member 51, and the second limiting point IV 34 and the second limiting point II 32 are respectively located at the intersection line 7 5124 of the fourth side a 5122 and the fourth bottom surface 5121 of the fourth groove 512 and the intersection line 8 5125 of the fourth side b 5123 and the fourth bottom surface 5121 of the fourth groove 512. This facilitates processing and also facilitates the limiting of the first wire 61 and the second wire 62. At the same time, one groove can form the second limiting point IV 34 and the second limiting point II 32, which improves the utilization rate of the groove and reduces the processing cost.

[0085] The first limiting point IV24 is located at intersection line 5 4124, the first limiting point II22 is located at intersection line 6 4125, the second limiting point IV34 is located at intersection line 7 5124, and the second limiting point II32 is located at intersection line 8 5125. This facilitates processing and design, while also increasing the contact area between the conductor and the limiting point, reducing the pressure of the limiting point on the conductor, making the conductor less prone to breakage, and extending the service life of the conductor.

[0086] In some embodiments, the first positioning member 41 and the second positioning member 51 are detachably connected to the first turntable 11 and the second turntable 12, respectively. For example, they can be connected by snap-fit, threaded connection, or by a connector. Different first positioning members 41 and second positioning members 51 can be replaced according to the different inner diameters of the multipole magnets to be tested.

[0087] In some embodiments of this application, reference is made to Figure 3 and Figure 6 The first positioning fixture 40 also includes a first bottom pressure fitting 42, which is spaced apart on the side of the first positioning fixture 41 facing the first turntable 11. The projection of the first bottom surface 4111 is located on the first bottom pressure fitting 42 along the axial direction of the first turntable 11.

[0088] By setting the first bottom pressure fitting 42, the first wire 21 is pressed against the first groove 411, so as to prevent the first wire 21 from coming out of the first groove 411 during winding and rotation, which facilitates winding and positioning.

[0089] Along the axial direction of the first turntable 11, the projection of the first bottom surface 4111 is located on the first bottom pressure fitting 42. For example, the lowest point of the first bottom pressure fitting 42 in the vertical direction is lower than the lowest point of the first groove 411, so that the first wire 21 passing through the bottom of the bottom pressure fitting is lower than the lowest point of the first groove 411, making it difficult for the first wire 21 to come out of the first groove 411.

[0090] The second positioning fixture 50 also includes a second bottom pressure fitting 52, which is spaced apart on the side of the second positioning fixture 51 facing the second turntable 12. The projection of the second bottom surface 5111 is located on the second bottom pressure fitting 52 along the axial direction of the second turntable 12.

[0091] By setting a second bottom pressure fitting 52, the second wire 62 is pressed against the second groove 511, so as to prevent the second wire 62 from coming out of the second groove 511 during winding and rotation, which facilitates winding and positioning.

[0092] The design principle of the second bottom pressure fitting 52 is the same as that of the first bottom pressure fitting 42, and will not be repeated here.

[0093] In some embodiments, the first bottom pressure fitting 42 and the second bottom pressure fitting 52 can be fixed to the first turntable 11 and the second turntable 12 respectively. For example, they can be integrally formed or fixed by connecting members, etc. The first bottom pressure fitting 42 and the second bottom pressure fitting 52 can be cylindrical, etc.

[0094] In some embodiments of this application, reference is made to Figure 3 and Figure 6 The first positioning fixture 40 also includes a first side-pressing fitting 43, which is provided with at least four first limiting grooves 431, which respectively limit the first limiting point I, the first limiting point II, the first limiting point III and the first limiting point IV.

[0095] By setting at least four first limiting grooves 431, the first conductor and the second conductor are always pressed laterally against the first limiting point I, the first limiting point II, the first limiting point III and the first limiting point IV, thereby maintaining the lateral stability of the first conductor and the second conductor.

[0096] Specifically, the first limiting groove 431 can be parallel to the first recess. The first limiting groove 431 includes a first limiting groove I 4311, a first limiting groove II 4312, a first limiting groove III 4313, and a first limiting groove IV 4314. The minimum distance P1 between the first limiting groove I 4311 and the axis of the first turntable is greater than R1; the minimum distance P2 between the first limiting groove II 4312 and the axis of the first turntable is greater than R2; the maximum distance P3 between the first limiting groove III 4313 and the axis of the first turntable is less than R3; and the maximum distance P4 between the first limiting groove IV 4314 and the axis of the first turntable is less than R4.

[0097] In some embodiments, the first side-pressure fitting may also be a cylindrical structure, etc.

[0098] Correspondingly, the second positioning fixture also includes a second side-pressure fitting component, which is provided with at least four second limiting grooves 531, which respectively limit the second limiting point I, the second limiting point II, the second limiting point III and the second limiting point IV.

[0099] By setting at least four second limiting grooves 531, the first and second conductors are always pressed laterally against the second limiting point I, the second limiting point II, the second limiting point III, and the second limiting point IV, thus maintaining the lateral stability of the first and second conductors.

[0100] Specifically, the second limiting groove 531 can be parallel to the second recess. The second limiting groove 531 includes a second limiting groove I 5311, a second limiting groove II 5312, a second limiting groove III 5313, and a second limiting groove IV 5314. The minimum distance P1 between the second limiting groove I 5311 and the axis of the first turntable is greater than R1; the minimum distance P2 between the second limiting groove II 5312 and the axis of the first turntable is greater than R2; the maximum distance P3 between the second limiting groove III 5313 and the axis of the first turntable is less than R3; and the maximum distance P4 between the second limiting groove IV 5314 and the axis of the first turntable is less than R4.

[0101] In some embodiments, the first side-pressure fitting 43 may also be a cylindrical structure, etc.

[0102] In some embodiments, the first side-pressure fitting 43 and the second side-pressure fitting 53 are detachably connected to the first turntable 11 and the second turntable 12, respectively. For example, they can be connected by snap-fit, threaded connection, or by a connector. Different first side-pressure fittings 43 and second side-pressure fittings 53 can be replaced according to the different inner diameters of the multipole magnets to be tested.

[0103] In some embodiments of this application, reference is made to Figure 3 and Figure 6 One of the first turntable 11 and the second turntable 12 is provided with a connector 121, and the other is provided with a winding component. The winding component includes a first winding component 110 and a second winding component 111.

[0104] One end of the first wire 61 is connected to the connector 121, and the other end is sequentially wound around the second limiting point I 31, the first limiting point I 21, the first winding member 110, the first limiting point II 22 and the second limiting point II 32, and then connected to the connector 121.

[0105] One end of the second wire 62 is connected to the connector 121, and the other end is sequentially wound around the second limiting point III 33, the first limiting point III 23, the second winding member 111, the first limiting point IV 24 and the second limiting point IV 34, and then connected to the connector 121.

[0106] By providing connector 121, one end of the first wire 61 and the second wire 62 can be connected. By providing a winding component, the first wire 61 and the second wire 62 can change direction and wind back to connector 121. Multiple connectors 121 can be provided, with one connector 121 corresponding to one end of each wire.

[0107] Specifically, the connector 121 can be located on the first turntable 11, and the winding component can be located on the second turntable 12; or, the connector 121 can be located on the second turntable 12, and the winding component can be located on the first turntable 11.

[0108] For example, the winding component can be designed as an I-shaped structure, etc.

[0109] In some embodiments of this application, reference is made to Figure 6 and Figure 8 The magnetic field measuring device 100 also includes a tension adjusting member 112, which is movably connected to the first turntable 11 along a direction perpendicular to the axis of the first turntable 11. The winding member is connected to the first turntable 11 through the tension adjusting member 112.

[0110] By setting a tension adjusting member 112 that is movably connected to the first turntable 11 in a direction perpendicular to the axis of the first turntable 11, the movement of the tension adjusting member 112 can adjust the position of the winding member, and adjusting the position of the winding member can tighten or loosen the wire.

[0111] In some embodiments, the tension adjusting member 112 is connected to the first turntable 11 via a tension adjusting bracket 17. For example, the tension adjusting member 112 may be a long bolt, the tension adjusting bracket 17 may be threaded, and the tension adjusting member 112 may be movably connected to the tension adjusting bracket 17 via the threaded connection.

[0112] It is understandable that the tension adjusting element 112 and the first turntable 11 can also be movably connected in other ways. For example, they can be slidably connected.

[0113] In some embodiments, a tension meter 114 is also included for observing the tension of the wire, and the tension meter 114 is connected between the tension adjusting member 112 and the winding member.

[0114] In some embodiments, two tension adjusting members 112 are provided, and the two tension adjusting members 112 are symmetrically arranged on opposite sides of the first positioning member 41. The two tension adjusting members 112 correspond to the first winding member 110 and the second winding member 111, respectively.

[0115] In some embodiments of this application, reference is made to Figure 6The magnetic field measuring device 100 also includes a guide member 113; the tension adjusting member 112 and the first positioning fixture 40 are spaced apart along the axial direction of the first turntable 11, and along the direction perpendicular to the axial direction of the first turntable 11, the guide member 113 is spaced apart on the side of the tension adjusting member 112 facing the first positioning fixture 40.

[0116] By setting the guide member 113, the wire can be guided and turned to prevent it from coming out of the side pressure fitting.

[0117] In some embodiments, there are two guide members 113, and the two guide members 113 correspond to two tension adjusting members 112 respectively.

[0118] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0119] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetic field measuring device, characterized by The utility model relates to a kind of multi-pole magnet testing device, including: Base for supporting the multi-pole magnet to be measured; First rotating disc and second rotating disc, the first rotating disc and the second rotating disc are oppositely arranged on the base, and are rotatably connected with the base respectively, the axis of the first rotating disc coincides with the axis of the second rotating disc; First positioning tool and second positioning tool, the first positioning tool is connected to the side of the first rotating disc towards the second rotating disc, and the second positioning tool is connected to the side of the second rotating disc towards the first rotating disc; The first positioning tool has a plurality of first limiting points, and the second positioning tool has a plurality of second limiting points corresponding to the plurality of first limiting points, the wire is wound through the corresponding first limiting point and second limiting point, and is provided in the multi-pole magnet to be measured, the wire between the first limiting point and the second limiting point is parallel to the axis of the first rotating disc, and the distance between the wire and the axis of the first rotating disc is less than the inner radius of the multi-pole magnet to be measured.

2. The magnetic field measuring device of claim 1, wherein, The first limiting point includes first limiting point I, first limiting point II, first limiting point III and first limiting point IV, and the second limiting point includes corresponding second limiting point I, second limiting point II, second limiting point III and second limiting point IV; The distance between the wire between the first limiting point I and the second limiting point I and the axis of the first rotating disc is R1; The distance between the wire between the first limiting point II and the second limiting point II and the axis of the first rotating disc is R2; The distance between the wire between the first limiting point III and the second limiting point III and the axis of the first rotating disc is R3; The distance between the wire between the first limiting point IV and the second limiting point IV and the axis of the first rotating disc is R4; Wherein, R1, R2, R3, R4 are all different.

3. The magnetic field measuring device of claim 2, wherein, The wire includes first wire and second wire; The first wire is wound through the second limiting point I, the first limiting point I, the first limiting point II and the second limiting point II in sequence; The second wire is wound through the second limiting point III, the first limiting point III, the first limiting point IV and the second limiting point IV in sequence.

4. The magnetic field measuring device of claim 2, wherein, The first positioning tool includes first positioning member, the first positioning member is provided with first groove, and the first groove includes first bottom surface and first side surface a and first side surface b perpendicular to the first bottom surface; The second positioning tool includes second positioning member, the second positioning member is provided with second groove corresponding to the first groove, and the second groove includes second bottom surface and second side surface a and second side surface b perpendicular to the second bottom surface; The first side surface a and the second side surface a are in the same plane, the first side surface b and the second side surface b are in the same plane, and the first bottom surface and the second bottom surface are in the same plane. The first limiting point I is located at the intersection line one between the first side a and the first bottom surface, the first limiting point III is located at the intersection line two between the first side b and the first bottom surface, the second limiting point I is located at the intersection line three between the second side a and the second bottom surface, and the second limiting point III is located at the intersection line four between the second side b and the second bottom surface.

5. The magnetic field measuring device of claim 4, wherein, The first positioning tool is provided with a third groove, and the third groove comprises a third bottom surface and third side surfaces a and b which are perpendicular to the third bottom surface. The second positioning tool comprises a second positioning tool, and the second positioning tool is provided with a fourth groove corresponding to the third groove, and the fourth groove comprises a fourth bottom surface and fourth side surfaces a and b which are perpendicular to the fourth bottom surface. The third side surface a and the fourth side surface a are in the same plane, the third side surface b and the fourth side surface b are in the same plane, and the third bottom surface and the fourth bottom surface are in the same plane. The first limiting point IV is located at the intersection line five between the third side surface a and the third bottom surface, the first limiting point II is located at the intersection line six between the third side surface b and the third bottom surface, the second limiting point IV is located at the intersection line seven between the fourth side surface a and the fourth bottom surface, and the second limiting point II is located at the intersection line eight between the fourth side surface b and the fourth bottom surface.

6. The magnetic field measuring device of claim 5, wherein, The first positioning tool further comprises a first bottom pressing fitting, and the first bottom pressing fitting is arranged on the side of the first positioning tool facing the first turntable and is located in the projection of the first bottom surface along the axis direction of the first turntable. The second positioning tool further comprises a second bottom pressing fitting, and the second bottom pressing fitting is arranged on the side of the second positioning tool facing the second turntable and is located in the projection of the second bottom surface along the axis direction of the second turntable.

7. The magnetic field measuring device of claim 2, wherein, The first positioning tool further comprises a first side pressing fitting, and the first side pressing fitting is provided with at least four first limiting grooves for limiting the first limiting point I, the first limiting point II, the first limiting point III and the first limiting point IV respectively.

8. The magnetic field measuring device of claim 3, wherein, One of the first turntable and the second turntable is provided with a connecting piece, and the other is provided with a winding piece, and the winding piece comprises a first winding piece and a second winding piece. One end of the first wire is connected to the connecting piece, and the other end is sequentially wound through the second limiting point I, the first limiting point I, the first limiting point II and the second limiting point II, and is connected to the connecting piece. One end of the second wire is connected to the connecting piece, and the other end is sequentially wound through the second limiting point III, the first limiting point III, the second limiting point IV and the second limiting point IV, and is connected to the connecting piece.

9. The magnetic field measuring device of claim 8, wherein, The tension adjusting piece is movably connected to the first turntable in the direction perpendicular to the axis of the first turntable, and the winding piece is connected to the first turntable through the tension adjusting piece.

10. The magnetic field measuring device of claim 9, wherein, The guiding piece is further included. The tension adjusting member is arranged along the axial direction of the first rotary table and is spaced apart from the first positioning tool, and the guide member is arranged on the side of the tension adjusting member facing the first positioning tool and is spaced apart from the first positioning tool in a direction perpendicular to the axial direction of the first rotary table.

Images