CN109596299B - Vertical and horizontal dual-purpose vibrating table - Google Patents
Vertical and horizontal dual-purpose vibrating table Download PDFInfo
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- CN109596299B CN109596299B CN201811629734.0A CN201811629734A CN109596299B CN 109596299 B CN109596299 B CN 109596299B CN 201811629734 A CN201811629734 A CN 201811629734A CN 109596299 B CN109596299 B CN 109596299B
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- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 19
- 230000005284 excitation Effects 0.000 claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 244000273256 Phragmites communis Species 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004556 laser interferometry Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a vertical and horizontal dual-purpose vibrating table, and belongs to the field of vibrating tables. The vertical and horizontal dual-purpose vibrating table comprises: the vibration calibration adjusting system comprises a first base, a second base, a vibration exciter, a first platform, a second platform, a support piece, a support guide reed, a vibration displacement indicator and a vibration calibration adjusting system, wherein the second base is fixedly connected with the first base, the vibration exciter and the first platform are connected with a vibration excitation connecting rod on the vibration exciter, the second platform is fixedly connected with the first platform, the support piece is connected with the support piece, and the vibration calibration adjusting system is used for vibration calibration of a vibration sensor. The vertical and horizontal dual-purpose vibrating table can realize vibration calibration of the vertical vibration sensor and also can realize vibration calibration of the horizontal vibration sensor.
Description
Technical Field
The invention relates to the field of vibrating tables, in particular to a vertical and horizontal dual-purpose vibrating table.
Background
At present, low-frequency vibration standard devices for calibrating low-frequency sensors exist at home and abroad, a vibrating table mostly adopts the technologies of electric driving, air bearing supporting and guiding, closed-loop servo frequency reduction and the like, a measuring principle is generally used for one-time calibration of a laser interferometry, the frequency range is generally 0.1-100Hz, the price is high, a special air pump is needed for supplying air to the device, the occupied area is large, the bearing capacity is limited due to the adoption of an air spring, and the quantity of the low-frequency vibration standard devices which can be compared nationwide in China is small at present. The portable low-frequency calibration table is a small servo vibration table system' (patent number: 92243429.8), the table surface displacement is only +/-2.5 mm, the exciting force is 17N, the maximum acceleration is 3m/s2, the signal-to-noise ratio is low in low-frequency acceleration calibration, and the horizontal vibration table and the vertical vibration table are independent.
There is therefore a great need for a vibrating table that can be used both vertically and horizontally for calibrating low-frequency or ultra-low frequency vibration sensors.
Disclosure of Invention
The invention provides a vertical and horizontal dual-purpose vibrating table, which aims to solve the problems of the vertical and horizontal dual-purpose vibrating table in the prior art.
The invention is realized in the following way:
a vertical and horizontal dual-purpose vibrating table comprising:
the first base is provided with a first working surface;
the second base is fixedly connected with the first base, a second working surface is arranged on the second base, and the second working surface and the first working surface are mutually perpendicular;
the vibration exciter is connected to the first working surface and/or the second working surface;
the first platform is connected with an excitation connecting rod on the vibration exciter; the first platform is provided with a first table top;
the second platform is fixedly connected with the first platform, a second table top is arranged on the second platform, and the second table top and the first table top are mutually perpendicular;
the support piece and the support guide reed are connected with the support piece, and one end, far away from the support piece, of the support guide reed is connected with the second platform;
the vibration displacement indicator is connected with the second base and is used for providing indication for the vibration of the second platform;
and the vibration calibration adjustment system is connected with the second platform and is used for vibration calibration of the vibration sensor.
In a preferred embodiment of the present invention, the vibration calibration adjustment system includes:
the spring connecting piece is connected with the second platform;
the feedback sensor connecting piece is connected with a feedback sensor magnetic circuit and a spring adjusting piece;
and one end of the spring is connected with the spring connecting piece, the other end of the spring is connected with the spring adjusting piece, and the spring adjusting piece is used for adjusting the length of the spring.
In a preferred embodiment of the present invention, the springs, the spring connectors and the spring adjusting members are all provided in plurality, and the springs, the spring connectors and the spring adjusting members are in one-to-one correspondence.
In a preferred embodiment of the present invention, the spring adjusting member includes a screw and a nut, the screw is in threaded connection with the feedback sensor connecting member, the nut is in threaded connection with the screw, the nut is disposed on a side of the feedback sensor connecting member away from the spring, and an end of the screw away from the nut is connected with the spring.
In a preferred embodiment of the present invention, the feedback sensor includes a feedback sensor body and a coil, the feedback sensor body includes a permanent magnet, one end of the permanent magnet is connected with an armature, an outer magnetic circuit is sleeved on the outer side of the permanent magnet, the outer magnetic circuit is configured as a cylinder, an annular protection ring is disposed on one end of the outer magnetic circuit, which is close to the armature, an end of the outer magnetic circuit, which is far away from the protection ring, is connected with a rear cover, the rear cover is connected with the permanent magnet, and the coil is sleeved between the permanent magnet and the outer magnetic circuit.
In a preferred embodiment of the present invention, the first platform is provided with a locking ring, the locking ring has a first state of being connected with the excitation connecting rod on the vibration exciter and a second state of being separated from the excitation connecting rod, and the first platform is connected with the vibration exciter through the locking ring.
In a preferred embodiment of the present invention, the support member includes a plurality of support rods and support plates connected to each other, the plurality of support rods are disposed at intervals, one end of each support rod is connected to the second base, the other end of each support rod is connected to the support rod, the support plates are connected to the support guide reed, the plurality of support guide reeds are disposed, and the plurality of support guide reeds are disposed at intervals.
In a preferred embodiment of the present invention, a vibration exciter base is disposed between the vibration exciter and the second base, one side of the vibration exciter base is connected with the vibration exciter, and the other side of the vibration exciter base is connected with the second base.
In a preferred embodiment of the present invention, a limiter is mounted on the second base, and the limiter is disposed between the second base and the second platform.
In a preferred embodiment of the present invention, the stoppers are arranged in a column shape, and a plurality of stoppers are arranged and are distributed at intervals.
The beneficial effects of the invention are as follows:
according to the vertical and horizontal dual-purpose vibrating table obtained through the design, the first working surface is kept horizontal when the vertical and horizontal dual-purpose vibrating table works, vibration generated by the vibration exciter is transmitted to the first platform through the vibration exciting connecting rod and then transmitted to the second platform and then transmitted to the vibration calibration adjustment system, and at the moment, the vibration sensor can be arranged on the vibration calibration adjustment system to realize vibration calibration of the vertical vibration sensor; and the second working surface is kept horizontal, at the moment, the vibration generated by the vibration exciter is transmitted to the first platform through the vibration excitation connecting rod, then transmitted to the second platform and then transmitted to the vibration calibration adjustment system, and at the moment, the vibration sensor can be arranged on the vibration calibration adjustment system to realize vibration calibration of the horizontal vibration sensor.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a first view angle of a vertical and horizontal dual-purpose vibrating table according to an embodiment of the present invention;
FIG. 2 is a schematic view of a second view of a vertical and horizontal dual-purpose vibrating table according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure of a feedback sensor magnetic circuit in a vertical and horizontal dual-purpose vibrating table according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a feedback sensor body in a vertical and horizontal dual-purpose vibrating table according to an embodiment of the present invention.
Icon: 100-a vertical and horizontal dual-purpose vibrating table; 110-a first base; 111-a first working surface; 120-a second base; 121-a second working surface; 122-vibration displacement indicator; 123-limiters; 130-vibration exciter; 131, a vibration exciter base; 132-locking ring; 141-a support plate; 142-supporting rods; 143-supporting a guide reed; 151-a first platform; 152-a second platform; 160-feedback sensor connection; 161-feedback sensor magnetic circuit; 1611-a guard ring; 1612 an external magnetic circuit; 1613-a rear cover; 1614, positioning sleeve; 1615 an armature; 1616-permanent magnet; 162-nut; 163-screw; 164-a spring; 165-spring connection; 166-coil.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
Example 1
The present embodiment provides a vertical and horizontal dual-purpose vibrating table 100, referring to fig. 1, 2, 3 and 4, the vertical and horizontal dual-purpose vibrating table 100 includes:
a first base 110, the first base 110 having a first working surface 111 thereon;
the second base 120, the second base 120 and the first base 110 are fixedly connected, the second base 120 is provided with a second working surface 121, and the second working surface 121 and the first working surface 111 are mutually perpendicular;
the vibration exciter 130, the vibration exciter 130 is connected to the first working surface 111 and/or the second working surface 121;
the first platform 151 is connected with an excitation connecting rod on the vibration exciter 130; the first platform 151 has a first mesa thereon;
the second platform 152 is fixedly connected with the first platform 151, the second platform 152 is provided with a second table top, and the second table top and the first table top are mutually vertical;
the support piece and the support guide reed 143 connected with the support piece, one end of the support guide reed 143 far away from the support piece is connected with the second platform 152;
a vibration displacement indicator 122, the vibration displacement indicator 122 being coupled to the second base 120, the vibration displacement indicator 122 being configured to provide an indication of the vibration of the second platform 152;
and the vibration calibration adjustment system is connected with the second platform 152 and is used for vibration calibration of the vibration sensor.
In the present embodiment, the vibration exciter 130 is fixed to the second base 120, but it may be fixed to the first base 110.
When the vibration calibration device works, the first working surface 111 is kept horizontal, at the moment, vibration generated by the vibration exciter 130 is transmitted to the first platform 151 through the vibration exciting connecting rod, then transmitted to the second platform 152 and then transmitted to the vibration calibration adjustment system, and at the moment, the vibration sensor can be arranged on the vibration calibration adjustment system to realize vibration calibration of the vertical vibration sensor; the second working surface 121 is kept horizontal, and at this time, the vibration generated by the vibration exciter 130 is transmitted to the first platform 151, then to the second platform 152, and then to the vibration calibration adjustment system through the excitation link, and at this time, the vibration sensor may be disposed on the vibration calibration adjustment system to implement vibration calibration of the horizontal vibration sensor.
Optionally, in this embodiment, the vibration calibration adjustment system includes:
a spring link 165, the spring link 165 being connected to the second platform 152;
a feedback sensor connector 160, the feedback sensor connector 160 is connected with a feedback sensor magnetic circuit 161 and a spring 164 regulator;
and a spring 164, one end of the spring 164 is connected with the spring connector 165, the other end of the spring 164 is connected with the spring 164 adjusting member, and the spring 164 adjusting member is used for adjusting the length of the spring 164.
The vibration on the second stage 152 is transferred to the feedback sensor connection 160 through the spring 164, and the length of the spring 164 is adjusted through the spring 164 adjustment member, so that the vibration transferred to the feedback sensor by the second stage 152 can be adjusted.
Alternatively, in this embodiment, the spring 164, the spring connector 165 and the spring 164 adjuster are all provided in plural numbers, and the spring 164, the spring connector 165 and the spring 164 adjuster are in one-to-one correspondence with each other.
Vibration on the second stage 152 is transmitted to the feedback sensor through the plurality of springs 164, so that the accuracy of transmission can be improved, and errors in the transmission process can be reduced.
Alternatively, in the present embodiment, the spring 164 adjuster includes a screw 163 and a nut 162, the screw 163 is screwed with the feedback sensor connector 160, the nut 162 is screwed with the screw 163, the nut 162 is disposed on a side of the feedback sensor connector 160 away from the spring 164, and an end of the screw 163 away from the nut 162 is connected with the spring 164.
The screw 163 is in threaded connection with the feedback sensor connector 160, and the length of the screw 163 on the side of the feedback sensor connector 160 away from the nut 162 can be controlled by adjusting the nut 162, so that the purpose of adjusting the length of the spring 164 can be achieved.
Optionally, in this embodiment, the feedback sensor includes a feedback sensor body and a coil 166, the feedback sensor body includes a permanent magnet 1616, one end of the permanent magnet 1616 is connected with an armature 1615, an outer magnetic circuit 1612 is sleeved outside the permanent magnet 1616, the outer magnetic circuit 1612 is configured as a cylinder, an annular protection ring 1611 is disposed at one end of the outer magnetic circuit 1612 near the armature 1615, a rear cover 1613 is connected at one end of the outer magnetic circuit 1612 far away from the protection ring 1611, the rear cover 1613 is connected with the permanent magnet 1616, and the coil 166 is sleeved between the permanent magnet 1616 and the outer magnetic circuit 1612.
Wherein, still have the spacer 1614 between permanent magnet 1616 and the outer magnetic ring, the spacer 1614 sets up the position near back lid 1613.
Under the action of vibration, the coil 166 feeds back relative motion between the sensor bodies, so that electromagnetic induction is generated, and the purpose of vibration detection is achieved.
Optionally, in this embodiment, a locking ring is disposed on the first platform 151, where the locking ring has a first state connected to the excitation link on the exciter 130 and a second state separated from the excitation link, and the first platform 151 is connected to the exciter 130 through the locking ring.
The locking ring 132 is in the first state when working, and the excitation connecting rod on the vibration exciter 130 and the first platform 151 are connected together, and the excitation connecting rod can drive the first platform 151 to vibrate, and when not working, the locking ring 132 is in the second state, and the locking ring 132 and the excitation connecting rod are separated, so that vibration generated by the first platform 151 can not be transmitted to the excitation connecting rod in the transportation process and the like, and the excitation connecting rod can not be damaged in the transportation process and the like.
Alternatively, in the present embodiment, the supporting member includes a plurality of supporting rods 142 and supporting plates 141 connected to each other, the supporting rods 142 are provided in plurality, the plurality of supporting plates 141 are provided at intervals, one end of the supporting rod 142 is connected to the second base 120, the other end of the supporting rod 142 is connected to the supporting rod 142, the supporting plates 141 are connected to supporting guide reed 143, the supporting guide reed 143 is provided in plurality, and the plurality of supporting guide reeds 143 are provided at intervals.
The support rods 142 are used for supporting the support plate 141, so that the support plate 141 can be ensured to be firm, the two ends of the support guide reed 143 are respectively connected with the support plate 141 and the second platform 152, and the support guide reed 143 can be firm and reliable at the position connected with the support plate 141.
Optionally, in this embodiment, a vibration exciter base 131 is disposed between the vibration exciter 130 and the second base 120, one side of the vibration exciter base 131 is connected to the vibration exciter 130, and the other side of the vibration exciter base 131 is connected to the second base 120.
The exciter base 131 may make the connection between the exciter 130 and the second base 120 more stable.
Alternatively, in the present embodiment, the second base 120 is mounted with a stopper 123, and the stopper 123 is disposed between the second base 120 and the second platform 152.
The limiter 123 may limit the vibration of the second stage 152 in a direction perpendicular to the second working surface 121, and may cause the vibration of the second stage 152 in a direction parallel to the first working surface 111.
Alternatively, in the present embodiment, the stoppers 123 are arranged in a column shape, and the stoppers 123 are arranged in a plurality of numbers, and the plurality of stoppers 123 are distributed at intervals.
The plurality of columnar stoppers 123 can enhance the stopper effect.
The working principle of the vertical and horizontal dual-purpose vibration table 100 provided in this embodiment is that, when working, the vertical and horizontal dual-purpose vibration table 100 obtained by the above design is invented, when working, the first working surface 111 is kept horizontal, at this time, the vibration generated by the vibration exciter 130 is transmitted to the first platform 151 through the excitation connecting rod, then transmitted to the second platform 152, and then transmitted to the vibration calibration adjustment system, at this time, the vibration sensor can be arranged on the vibration calibration adjustment system to realize the vibration calibration of the vertical vibration sensor; the second working surface 121 is kept horizontal, and at this time, the vibration generated by the vibration exciter 130 is transmitted to the first platform 151, then to the second platform 152, and then to the vibration calibration adjustment system through the excitation link, and at this time, the vibration sensor may be disposed on the vibration calibration adjustment system to implement vibration calibration of the horizontal vibration sensor.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A vertical and horizontal dual-purpose vibrating table, comprising:
the first base is provided with a first working surface;
the second base is fixedly connected with the first base, a second working surface is arranged on the second base, and the second working surface and the first working surface are mutually perpendicular;
the vibration exciter is connected to the first working surface and/or the second working surface;
the first platform is connected with an excitation connecting rod on the vibration exciter; the first platform is provided with a first table top;
the second platform is fixedly connected with the first platform, a second table top is arranged on the second platform, and the second table top and the first table top are mutually perpendicular;
the support piece and the support guide reed are connected with the support piece, and one end, far away from the support piece, of the support guide reed is connected with the second platform;
the vibration displacement indicator is connected with the second base and is used for providing indication for the vibration of the second platform;
the vibration calibration adjustment system is connected with the second platform and is used for vibration calibration of the vibration sensor;
the vibration calibration adjustment system includes:
the spring connecting piece is connected with the second platform;
the feedback sensor connecting piece is connected with a feedback sensor magnetic circuit and a spring adjusting piece;
one end of the spring is connected with the spring connecting piece, the other end of the spring is connected with the spring adjusting piece, and the spring adjusting piece is used for adjusting the length of the spring;
the first platform is provided with a locking ring, the locking ring is provided with a first state connected with the excitation connecting rod on the vibration exciter and a second state separated from the excitation connecting rod, and the first platform is connected with the vibration exciter through the locking ring.
2. The vertical and horizontal dual-purpose vibrating table according to claim 1, wherein the springs, the spring connecting pieces and the spring adjusting pieces are all arranged in a plurality, and the springs, the spring connecting pieces and the spring adjusting pieces are in one-to-one correspondence.
3. The vertical and horizontal dual-purpose vibrating table according to claim 1, wherein the spring adjusting member comprises a screw and a nut, the screw is in threaded connection with the feedback sensor connecting member, the nut is in threaded connection with the screw, the nut is arranged on one side of the feedback sensor connecting member away from the spring, and one end of the screw away from the nut is connected with the spring.
4. The vertical and horizontal dual-purpose vibrating table according to claim 1, wherein the feedback sensor magnetic circuit comprises a feedback sensor body and a coil, the feedback sensor body comprises a permanent magnet, one end of the permanent magnet is connected with an armature, an outer magnetic circuit is sleeved outside the permanent magnet, the outer magnetic circuit is arranged in a cylinder shape, one end of the outer magnetic circuit, which is close to the armature, is provided with an annular protection ring, one end of the outer magnetic circuit, which is far away from the protection ring, is connected with a rear cover, the rear cover is connected with the permanent magnet, and the coil is sleeved between the permanent magnet and the outer magnetic circuit.
5. The vertical and horizontal dual-purpose vibrating table according to claim 1, wherein the supporting member comprises a plurality of supporting rods and supporting plates which are connected with each other, the plurality of supporting rods are arranged at intervals, one end of each supporting rod is connected with the second base, the other end of each supporting rod is connected with the supporting rod, the supporting plates are connected with the supporting guide reeds, the plurality of supporting guide reeds are arranged at intervals, and the plurality of supporting guide reeds are arranged at intervals.
6. The vertical and horizontal dual-purpose vibrating table according to claim 1, wherein a vibration exciter base is arranged between the vibration exciter and the second base, one side of the vibration exciter base is connected with the vibration exciter, and the other side of the vibration exciter base is connected with the second base.
7. The vertical and horizontal dual-purpose vibrating table according to claim 1, wherein a stopper is mounted on the second base, and the stopper is disposed between the second base and the second platform.
8. The vertical and horizontal dual-purpose vibrating table according to claim 7, wherein the stoppers are arranged in a column shape, the stoppers are arranged in a plurality, and a plurality of the stoppers are distributed at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629734.0A CN109596299B (en) | 2018-12-28 | 2018-12-28 | Vertical and horizontal dual-purpose vibrating table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629734.0A CN109596299B (en) | 2018-12-28 | 2018-12-28 | Vertical and horizontal dual-purpose vibrating table |
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| Publication Number | Publication Date |
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| CN109596299A CN109596299A (en) | 2019-04-09 |
| CN109596299B true CN109596299B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811629734.0A Active CN109596299B (en) | 2018-12-28 | 2018-12-28 | Vertical and horizontal dual-purpose vibrating table |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113495236B (en) * | 2020-04-07 | 2024-06-11 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration test system with background magnetic field |
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| RU2599183C1 (en) * | 2015-07-22 | 2016-10-10 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Device for calibration of seismic sensors |
| CN209198037U (en) * | 2018-12-28 | 2019-08-02 | 中国地震局工程力学研究所 | It is multi-direction to use shake table |
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2018
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| CN104614068A (en) * | 2015-01-30 | 2015-05-13 | 浙江大学 | Integrated double-axis electromagnetic vibration generator |
| RU2599183C1 (en) * | 2015-07-22 | 2016-10-10 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Device for calibration of seismic sensors |
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| CN109596299A (en) | 2019-04-09 |
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