Triaxial vibration shock test device and superconducting magnet

Abstract

The present invention relates to the technical field of vibration and impact test tooling, and discloses a triaxial vibration and impact test device and a superconducting magnet. The device comprises a vibration table connection base plate, a magnet mounting vertical plate, oblique ribs and reinforcing ribs, the vibration table connection base plate is connected to the vibration table, the magnet mounting vertical plate is arranged on the vibration table connection base plate, the oblique ribs are connected to the vibration table connection base plate and the magnet mounting vertical plate, the lower part of the reinforcing ribs is connected to the vibration table connection base plate and the lower part of the magnet mounting vertical plate, and the oblique rods on the upper part of the reinforcing ribs are connected to the top of the magnet mounting vertical plate for bearing the vertical static load of the measured magnet, the magnet mounting vertical plate is provided with a magnet center rod connection hole, a magnet transverse connection flange hole and a magnet transverse reinforcement connection hole, the measured magnet is connected to the magnet mounting vertical plate through the magnet center rod connection hole for transmitting the magnet longitudinal and vertical loads, and the measured magnet is connected to the magnet mounting vertical plate through the magnet transverse connection flange hole and the magnet transverse reinforcement connection hole for transmitting the transverse load.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration and shock test tooling, and in particular to a three-axis vibration and shock test device and a superconducting magnet. Background Art

[0002] Due to many advantages such as large generated magnetic field, small volume, light weight, and low loss, superconducting magnets are often applied in ultra-high-speed environments, such as ultra-high-speed maglev trains, ultra-high-speed electromagnetic catapults, high-speed three-dimensional reservoirs and other fields. Especially for ultra-high-speed maglev trains, the superconducting magnet is the moving part of the superconducting linear motor. The stator part of the superconducting linear motor is wound by normal conducting coils. The superconducting magnet in the moving part conducts direct current, and the normal conducting magnet in the stator part conducts alternating current. The direct current magnetic field of the superconducting magnet interacts with the alternating current magnetic field of the normal conducting magnet to generate an electromagnetic force on the superconducting magnet, so that the superconducting magnet has a certain thrust in the moving direction, thereby causing a certain acceleration of the superconducting magnet.

[0003] For large-mass carriers represented by maglev trains, in order to generate sufficient acceleration, superconducting magnets usually bear large propulsion and braking loads. In addition, since the ground coils (stators) will inevitably generate electromagnetic harmonics while generating the propulsion magnetic field, it is manifested as an electromagnetic force resonance excitation with a certain frequency on the superconducting magnet structure.

[0004] Specifically, as the moving part of the linear synchronous motor, the superconducting magnet bears very complex dynamic loads, and there are large electromagnetic load fluctuations in all three axial directions. Therefore, before the train operation test goes online, it is necessary to fully study the dynamic mechanical properties of the designed superconducting magnet and conduct modal tests and vibration and shock tests. At present, Japan's maglev uses the form of an excitation rod to perform unidirectional excitation on the coil, but such a method generally can only excite the lateral vibration mode of the coil. Domestic vibration testing equipment usually directly connects the device under test to the vibration table with fixtures such as press plates, and usually cannot adapt to the interference of the strong magnetic field of the superconducting magnet on the detection equipment. Summary of the Invention

[0005] The present invention provides a three-axis vibration and shock test device and a superconducting magnet, which can solve the technical problems in the prior art.

[0006] The present invention provides a three-axis vibration and shock test device. The device includes a vibration table connecting bottom plate, a magnet mounting vertical plate, diagonal ribs, and reinforcing ribs. The vibration table connecting bottom plate is connected to the vibration table. The magnet mounting vertical plate is arranged on the vibration table connecting bottom plate. The diagonal ribs are connected to the vibration table connecting bottom plate and the magnet mounting vertical plate to provide lateral stability for the magnet mounting vertical plate. The lower part of the reinforcing rib is connected to the lower part of the vibration table connecting bottom plate and the magnet mounting vertical plate, and the diagonal bar at the upper part of the reinforcing rib is connected to the top of the magnet mounting vertical plate to bear the vertical static load of the magnet under test. The magnet mounting vertical plate is provided with a magnet center rod connection hole, a magnet lateral connection flange hole, and a magnet lateral reinforcement connection hole. The magnet under test is connected to the magnet mounting vertical plate through the magnet center rod connection hole to transfer the longitudinal and vertical loads of the magnet, and the magnet under test is connected to the magnet mounting vertical plate through the magnet lateral connection flange hole and the magnet lateral reinforcement connection hole to transfer the lateral load of the magnet.

[0007] Preferably, a plurality of connection holes are provided on the vibration table connecting bottom plate. The vibration table connecting bottom plate is fixedly connected to the vibration table through the plurality of connection holes and bolts adapted to the plurality of connection holes.

[0008] Preferably, the diagonal rib is a triangular diagonal rib. The two right-angled sides of the triangular diagonal rib are respectively connected to the vibration table connecting bottom plate and the magnet mounting vertical plate by welding.

[0009] Preferably, the magnet mounting vertical plate is fixed on the vibration table connecting bottom plate by welding. The lower part of the reinforcing rib is connected to the lower part of the vibration table connecting bottom plate and the magnet mounting vertical plate by welding. The diagonal bar at the upper part of the reinforcing rib is connected to the top of the magnet mounting vertical plate by welding.

[0010] Preferably, the magnet under test is connected to the magnet mounting vertical plate through the magnet center rod connection hole with a transition fit.

[0011] Preferably, the magnet under test is threadedly connected to the magnet mounting vertical plate through the magnet lateral connection flange hole and the magnet lateral reinforcement connection hole.

[0012] The present invention also provides a superconducting magnet, which includes the above three-axis vibration and shock test device.

[0013] Through the above technical solutions, the overall rigidity of the structure can be ensured, and at the same time, the influence of the magnetic field of the superconducting magnet in the excited state on the vibration test bench can be avoided; moreover, according to the structural shape and electromagnetic characteristics of the long box-shaped superconducting magnet, a vibration and shock test similar to the actual working state of the superconducting magnet can be realized to fully test the dynamic characteristics of the superconducting magnet structure, solving the problems of insufficient vibration testing of Japanese excitation equipment in the prior art and the difficulty of directly applying existing common vibration tooling to the vibration and shock test of superconducting magnets. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings included are used to provide a further understanding of the embodiments of the present invention, which form a part of the specification, are used to illustrate the embodiments of the present invention, and together with the written description are used to explain the principles of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 FIG. shows a schematic plan view of a three-axis vibration and shock test device according to an embodiment of the present invention;

[0016] Figure 2 FIG. shows a schematic perspective view of a three-axis vibration and shock test device according to an embodiment of the present invention.

[0017] DESCRIPTION OF THE REFERENCE NUMERALS

[0018] 1 Vibration table connection bottom plate; 2 Magnet installation vertical plate; 3 Inclined rib; 4 Reinforcing rib;

[0019] 5 Magnet center rod connection hole; 6 Magnet transverse connection flange hole; 7 Magnet transverse enhanced connection hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof in subsequent drawings is not required.

[0023] Figure 1 A plan view of a three-axis vibration and shock test device according to an embodiment of the present invention is shown;

[0024] Figure 2 A perspective view of a three-axis vibration and shock test device according to an embodiment of the present invention is shown.

[0025] In Figure 2 it, the X direction is the longitudinal direction, the Y direction is the vertical direction, and the Z direction is the transverse direction.

[0026] As Figure 1-2As shown in the figure, an embodiment of the present invention provides a three-axis vibration and shock test device. The device includes a vibration table connection bottom plate 1, a magnet mounting vertical plate 2, inclined ribs 3, and reinforcing ribs 4. The vibration table connection bottom plate 1 is connected to the vibration table. The magnet mounting vertical plate 2 is disposed on the vibration table connection bottom plate 1. The inclined ribs 3 are connected to the vibration table connection bottom plate 1 and the magnet mounting vertical plate 2 to provide lateral stability for the magnet mounting vertical plate 2. The lower part of the reinforcing rib 4 is connected to the lower parts of the vibration table connection bottom plate 1 and the magnet mounting vertical plate 2, and the inclined rod at the upper part of the reinforcing rib 4 is connected to the top of the magnet mounting vertical plate 2 to bear the vertical static load of the magnet under test. A magnet center rod connection hole 5, a magnet lateral connection flange hole 6, and a magnet lateral reinforcement connection hole 7 are provided on the magnet mounting vertical plate 2. The magnet under test is connected to the magnet mounting vertical plate 2 through the magnet center rod connection hole 5 to transfer the longitudinal and vertical loads of the magnet. The magnet under test is connected to the magnet mounting vertical plate 2 through the magnet lateral connection flange hole 6 and the magnet lateral reinforcement connection hole 7 to transfer the lateral load of the magnet.

[0027] That is, the test device of the present invention has three-directional stiffness. The magnet center rod connection hole 5, the magnet lateral connection flange hole 6, and the magnet lateral reinforcement connection hole 7 can simultaneously transfer the three-directional loads of the magnet, so as to cooperate with the test bench for three-axis vibration.

[0028] Among them, the three-axis vibration and shock test device can be applied to the vibration and shock test of superconducting magnets.

[0029] Through the above technical solutions, the overall rigidity of the structure can be ensured, and at the same time, the influence of the magnetic field of the superconducting magnet in the excited state on the vibration test bench can be avoided. Moreover, according to the structural shape and electromagnetic characteristics of the long box-type superconducting magnet, a vibration and shock test similar to the actual working state of the superconducting magnet can be realized to fully test the dynamic characteristics of the superconducting magnet structure, solving the problems of insufficient vibration testing of Japanese excitation equipment in the prior art and the difficulty of directly applying existing common vibration tooling to the vibration and shock test of superconducting magnets.

[0030] In addition, the vibration tooling itself is an integral welded structure with good overall rigidity. The magnet mounting vertical plate itself has good longitudinal rigidity, and the vertical and lateral rigidities of the vibration tooling are improved by welding large ribs and triangular inclined ribs.

[0031] According to an embodiment of the present invention, a plurality of connection holes are provided on the vibration table connection bottom plate 1, and the vibration table connection bottom plate 1 is fixedly connected to the vibration table through the plurality of connection holes and bolts adapted to the plurality of connection holes.

[0032] Among them, the number of connection holes on the vibration table connection bottom plate 1 can be determined according to the number of mounting holes on the vibration table, for the connection and fastening of the test device and the vibration table, so as to fully transfer the three-direction load generated by the vibration table to the test device.

[0033] For example, the vibration table connection bottom plate 1 can be a large-area vibration table connection bottom plate to make full contact with the vibration test table.

[0034] According to an embodiment of the present invention, the inclined rib 3 is a triangular inclined rib, and the two right-angled sides of the triangular inclined rib are respectively connected to the vibration table connection bottom plate 1 and the magnet mounting vertical plate 2 by welding.

[0035] Thus, the lateral stability of the magnet mounting vertical plate can be ensured.

[0036] According to an embodiment of the present invention, the magnet mounting vertical plate 2 is fixed on the vibration table connection bottom plate 1 by welding. The lower part of the reinforcing rib 4 is connected to the lower parts of the vibration table connection bottom plate 1 and the magnet mounting vertical plate 2 by welding, and the inclined rod at the upper part of the reinforcing rib 4 is connected to the top of the magnet mounting vertical plate 2 by welding.

[0037] Among them, the magnet mounting vertical plate 2 forms the main force transmission structure of the test device by welding on the vibration table connection bottom plate 1.

[0038] By welding the vibration table connection bottom plate 1, the magnet mounting vertical plate 2, the inclined rib 3 and the reinforcing rib 4 into an integral frame structure, the overall rigidity of the vibration and shock test device can be better, and the magnet mounting vertical plate itself has good longitudinal stiffness. At the same time, the vertical and lateral stiffness of the vibration and shock test device are improved by the welded reinforcing ribs and triangular inclined ribs.

[0039] According to an embodiment of the present invention, the magnet under test is connected to the magnet mounting vertical plate 2 of the vibration test device through the magnet center rod connection hole 5 with a transition fit.

[0040] For example, the center rod of the magnet under test passes through the magnet center rod connection hole 5 and the two are in a transition fit.

[0041] The magnet under test is connected to the magnet mounting vertical plate 2 of the vibration test device through the center rod of the magnet under test passing through the magnet center rod connection hole 5 and is in a transition fit, which can fully contact and transfer the longitudinal and vertical loads.

[0042] Among them, the magnet center rod connection hole 5 can be designed according to the maximum magnetic field intensity of the magnet to avoid the influence of the magnetic field on the vibration table.

[0043] According to an embodiment of the present invention, the magnet under test is threadedly connected to the magnet mounting vertical plate 2 through the magnet transverse connection flange hole 6 and the magnet transverse reinforcement connection hole 7.

[0044] Furthermore, the contact between the magnet back plate and the magnet mounting vertical plate can be ensured by applying a pre-tightening force and a lock washer, etc., so as to fully transmit the transverse load.

[0045] In addition, as Figure 1 shown, the height L from the center of the superconducting magnet coil to the bottom plate can be designed according to the magnetic field intensity to effectively avoid the interference of the magnetic field on the vibration test bench during the excitation vibration test.

[0046] An embodiment of the present invention also provides a superconducting magnet, wherein the superconducting magnet includes the three-axis vibration and shock test device described in the above embodiment.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0048] For the convenience of description, spatial relative terms such as "above...", "above...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures" afterwards. Thus, the exemplary term "above..." can include two orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0049] In addition, it should be noted that the use of words such as "first", "second" to limit the components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning. Therefore, it cannot be understood as a limitation on the protection scope of the present invention.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A triaxial vibration impact test device, characterized in that: The device comprises a vibration table connecting base plate (1), a magnet mounting vertical plate (2), oblique ribs (3) and reinforcing ribs (4); the vibration table connecting base plate (1) is connected to the vibration table; the magnet mounting vertical plate (2) is arranged on the vibration table connecting base plate (1); the oblique ribs (3) are connected to the vibration table connecting base plate (1) and the magnet mounting vertical plate (2) to provide lateral stability for the magnet mounting vertical plate (2); the lower part of the reinforcing ribs (4) is connected to the vibration table connecting base plate (1) and the lower part of the magnet mounting vertical plate (2); and the oblique rods on the upper part of the reinforcing ribs (4) are connected to the top of the magnet mounting vertical plate (2) to withstand the vertical static load of the magnet to be measured. The magnet mounting vertical plate (2) is provided with a magnet center rod connection hole (5), a magnet transverse connection flange hole (6) and a magnet transverse reinforcement connection hole (7); the measured magnet is connected to the magnet mounting vertical plate (2) through the magnet center rod connection hole (5) for transmitting the magnet longitudinal and vertical loads; the measured magnet is connected to the magnet mounting vertical plate (2) through the magnet transverse connection flange hole (6) and the magnet transverse reinforcement connection hole (7) for transmitting the magnet transverse load; the oblique rib (3) is a triangular oblique rib, and the two right-angled sides of the triangular oblique rib are respectively connected to the vibration table connection base plate (1) and the magnet mounting vertical plate (2) by welding.

2. The device according to claim 1, characterized in that The magnet mounting vertical plate (2) is fixed to the vibration table connecting bottom plate (1) by welding, the lower part of the reinforcing rib (4) is connected to the vibration table connecting bottom plate (1) and the lower part of the magnet mounting vertical plate (2) by welding, and the inclined rod at the upper part of the reinforcing rib (4) is connected to the top of the magnet mounting vertical plate (2) by welding.

3. The device according to claim 2, characterized in that The magnet to be measured is connected to the magnet mounting vertical plate (2) in a transitional fit through the magnet center rod connection hole (5).

4. The device according to any one of claims 1 to 3, characterized in that The magnet to be measured is threadedly connected to the magnet mounting vertical plate (2) via the magnet transverse connecting flange hole (6) and the magnet transverse reinforcing connecting hole (7).

5. A superconducting magnet, characterized in that: The superconducting magnet comprises the triaxial vibration shock test device according to any one of claims 1 to 4.

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