CN205301606U - Electromagnetic damper and gravity appearance - Google Patents
Electromagnetic damper and gravity appearance Download PDFInfo
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- CN205301606U CN205301606U CN201521126760.3U CN201521126760U CN205301606U CN 205301606 U CN205301606 U CN 205301606U CN 201521126760 U CN201521126760 U CN 201521126760U CN 205301606 U CN205301606 U CN 205301606U
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- sampling quality
- quality block
- electromagnetic damper
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- shell
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Abstract
The utility model provides an electromagnetic damper and gravity appearance relates to gravity appearance technical field, for the poor problem of interference killing feature of solving the gravity appearance among the prior art. Electromagnetic damper includes the shell to and install in the shell: sampling quality piece, detection spring, electric whirl plate, magnetic circuit device, difference condenser and control converting circuit, the one end that detects the spring links to each other with the shell, and the other end links to each other with the sampling quality piece, electricity whirl plate's top links to each other with the bottom of sampling quality piece, and the bottom is connected with the tube -shape skeleton, and the winding has the current -carrying coil on the tube -shape skeleton, electricity whirl plate's bottom and tube -shape skeleton all are arranged in the magnetic circuit device, the difference condenser includes that the polar plate is decided to two electric capacity and an electric capacity moves the polar plate, it is continuous with difference condenser and current -carrying coil respectively to control converting circuit, and control converting circuit converts the difference electric capacity of difference condenser output the electric current into and transmits for the current -carrying coil. Electromagnetic damper's interference killing feature is strong, and it is high to detect the precision.
Description
Technical field
This utility model relates to gravimeter technical field, especially relates to a kind of electromagnetic damper and gravimeter.
Background technology
During marine gravitometer work, the change of the external dynamic environment impact on observed result, is the main error source of marine gravitometer measurement. Surveying vessel, when implementing sea gravity measurement, six-freedom degree is likely to produce motion, and then produces disturbance acceleration, disturbance acceleration the having the greatest impact to sea gravity measurement of this wherein vertical direction. This disturbance acceleration numerical value is the 10 of Gravity changer value to be measured5��106Times, and need the acceleration of gravity measured mixed in together, bring very big difficulty to sea gravity measurement, and produce very big observation error. So the premise measured implemented by marine gravitometer under the dynamic environment of ocean, being exactly adopt various measures to eliminate surveying vessel in the motion of each degree of freedom, particularly movement in vertical direction to gravimetric impact, sea gravity measurement is produced to disturb this maximum error source by weakening dynamic environment change of trying one's best.
Owing to Vertical disturbing acceleration has periodic feature, and its cycle is little more than acceleration of gravity, so marine gravitometer is general all sampling quality is applied heavy damping, the displacement of the sampling quality caused by Vertical disturbing acceleration is significantly compressed, then with digital filtering, remainder is completely eliminated again. Marine gravitometer is after heavy damping processes, and the Vertical disturbing acceleration reflection of high frequency is very blunt, and the impact of gravimeter can be reduced to 10 by vertical disturbance-6, even less, and change is relatively slower, frequency is very low A/W change is very sensitive. Additionally due to the motion amplitude of sampling quality is significantly compressed, substantially reduce frame for movement, capacitance sensor and zero-initial-length spring technology and improve and the nonlinearity erron that produces not; Also eliminate the high order effect of normal acceleration simultaneously. Therefore, advanced damping is the important guarantee that marine gravitometer can implement high-precision rapid survey under complicated ocean dynamic environment.
What have in a kind of gravimeter application is air damper, and this instrument have employed oblique pull oscillating rod type elastic system, and the coefficient of impact is little, it is not necessary to excessive damped coefficient can meet kinetic measurement requirement.Fork is in the middle of a pair air damper, it is possible to all provide damping in vertical and horizontal direction. When being subject to external vertical disturbance acceleration and affecting, piston up-down compression air in fork band fluctuation dampers, thus producing bigger damping by the amplitude compression of Vertical disturbing acceleration to scope of design. But air damper has a lot of limitation, big damped coefficient cannot be obtained, the attenuation amplitude of vertical disturbance is limited, and due to the compressibility of air, when the vibration period of the system of measurement is shorter, air damper does not only hinder the effect of vertical direction piston movement, also can strengthen the motion of this vertical piston on the contrary, cause bigger agitation error.
Utility model content
The purpose of this utility model is in that to provide a kind of electromagnetic damper, with the problem solving the poor anti jamming capability of gravimeter of the prior art.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
The electromagnetic damper that this utility model provides, including shell, and is installed in described shell:
Having the sampling quality block of cavity, described sampling quality block is connected with described shell by thread connector;
Detection spring, one end of described detection spring is connected with described shell, and the other end stretches into the cavity of described sampling quality block and is connected with described sampling quality block;
Current vortex plate, the bottom of described sampling quality block is connected with the top of described current vortex plate, and the bottom of described current vortex plate is connected to tubular skeleton, and described tubular skeleton is wound with current-carrying coil;
Magnetic circuit device, bottom and the described tubular skeleton of described current vortex plate are respectively positioned in described magnetic circuit device;
Differential capacitor, described differential capacitor includes two capacitor fixed plates and an electric capacity movable plate electrode, described capacitor fixed plate is connected with described shell, and described electric capacity movable plate electrode is connected with described sampling quality block, and described electric capacity movable plate electrode is between two described capacitor fixed plates;
Controlling change-over circuit, described control change-over circuit is connected with described differential capacitor and described current-carrying coil respectively, and the differential capacitance that described differential capacitor exports is converted to electric current and is transferred to described current-carrying coil by described control change-over circuit.
Preferably, described current-carrying coil is formed by the copper paint envelope curve coiling that diameter is 0.07 millimeter.
Preferably, described sampling quality block is tubulose mass, and the outer surface of described sampling quality block is coated with magnetic masking layer.
Preferably, described thread connector has two groups, and often group includes three described thread connectors, and often the described thread connector of three in group is uniformly distributed along the circumference of described sampling quality block respectively.
Preferably, described sampling quality block being provided with a pair torsion spring for offsetting pulling force, described torsion spring is between connector thread described in two groups, and equal with the distance between thread connector described in two groups.
Preferably, the two ends of described thread connector are fixed respectively through the clamping device being packed on described sampling quality block and described shell, and described clamping device includes the pair of metal sheet being screwed together.
Preferably, described detection spring is connected with described sampling quality block by column connector, described column connector is arranged at the cavity bottom of described sampling quality block, the external cylindrical surface of described column connector is fixing with the inwall of the cavity of described sampling quality to be connected, and described detection spring is connected with the upper end of described column connector.
Preferably, the bottom of described column connector is stretched into described current vortex plate and is provided with flange, and described column connector is connected together by described flange and described current vortex plate.
Preferably, described shell is cylindrical shell, and the stable axle of the vertical direction of described cylindrical shell, described sampling quality block, described current vortex plate and described magnetic circuit device is on same straight line.
Relative to prior art, electromagnetic damper described in the utility model has the advantage that
In the electromagnetic damper that this utility model provides, owing to sampling quality block is connected with housing by thread connector, therefore sampling quality block in the horizontal direction can not opposite shell motion, can only the motion vertically gone up of opposite shell generation. Owing to the bottom of sampling quality block is connected with the top of current vortex plate, therefore sampling quality block can drive current vortex plate closer or far from magnetic circuit device. In use, when sampling quality block is subject to Vertical disturbing acceleration interference, sampling quality block drives current vortex plate to move to the direction closer or far from magnetic circuit device, that is, current vortex plate moves up and down in the magnetic field that magnetic circuit device produces, so that the magnetic flux of current vortex intralaminar part changes, forms powerful current vortex in current vortex plate, then produce a reverse Lorentz force, then produce damping and hinder the motion of sampling quality block. And the current vortex that current vortex plate produces eventually is converted into Joule heat and discharges.
Simultaneously, owing to being connected to tubular skeleton in the bottom of current vortex plate, tubular skeleton is wound with current-carrying coil, therefore current-carrying coil is arranged in the magnetic field that magnetic circuit device produces, when sampling quality block is subject to Vertical disturbing acceleration interference, sampling quality block band dynamic condenser movable plate electrode moves, so that the distance between electric capacity movable plate electrode and two capacitor fixed plates all produces change, therefore, electric capacity movable plate electrode also changes therewith with the electric capacity produced between two capacitor fixed plates respectively, difference (differential capacitance) between two electric capacity converts electric current to via control change-over circuit and is transferred to current-carrying coil, the effect of the magnetic field Ampere force being subject to due to current-carrying coil is just contrary with the movement tendency of sampling quality block, therefore the electrical damping that current-carrying coil is formed can attenuate the vertical disturbance that a part of sampling quality is subject to soon further.
Eddy current effect is produced owing to the electromagnetic damper of this utility model offer utilizes conductor (current vortex plate) to move in magnetic field, and by the ultimate principle of Ampere force in current��carrying conductor (current-carrying coil) outside magnetic field, environmental temperature fluctuation is insensitive, time constant is little, Gravity changer is delayed little, also be absent from the impact of fluid convection power, the electromagnetic damper that this utility model provides has that damped coefficient is big, noncontact, mechanical friction and wear, need not lubricate, easy to maintenance, high reliability. When the electromagnetic damper that this utility model provides is applied to marine gravitometer, relative to marine gravitometer of the prior art, this low frequency of wave, amplitude vertical disturbance are had better compression effectiveness by the marine gravitometer of the electromagnetic damper that application this utility model provides, the precision of gravimeter can be improved greatly, meet rapidly and efficiently sea gravity measurement on a large scale.
Another object of the present utility model is in that to propose gravimeter, with the problem solving the poor anti jamming capability of gravimeter of the prior art.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
A kind of gravimeter, described gravimeter includes the electromagnetic damper as described in technique scheme.
Described gravimeter is identical relative to prior art have the advantage that with above-mentioned electromagnetic damper, does not repeat them here.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the eddy-current damping structure that Fig. 1 provides for this utility model embodiment;
Fig. 2 is the sectional view at A-A place in Fig. 1.
Accompanying drawing labelling:
1-sampling quality block; 2-current vortex plate; The thread connector of 3-;
4-detects spring; 5-magnetic circuit device; 51-outer magnetizer;
Magnetic conductor in 52-; 53-rare-earth permanent magnet; 61-electric capacity movable plate electrode;
62-capacitor fixed plate; 7-column connector; 8-tubular skeleton.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described embodiment is a part of embodiment of this utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be for only for ease of description this utility model and simplifying and describe; rather than instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model. Additionally, term " first ", " second ", " the 3rd " are only for descriptive purposes, and it is not intended that indicate or hint relative importance.
In description of the present utility model, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be detachably connected, or connect integratedly; Can be mechanically connected, it is also possible to be electrical connection; Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals. For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in this utility model.
As depicted in figs. 1 and 2, the electromagnetic damper that this utility model embodiment provides, including shell, and it is installed in shell: having the sampling quality block 1 of cavity, sampling quality block 1 is connected with shell by thread connector 3; Detection spring 4, one end of detection spring 4 is connected with shell, and the other end stretches into the cavity of sampling quality block 1 and is connected with sampling quality block 1; Current vortex plate 2, the bottom of sampling quality block 1 is connected with the top of current vortex plate 2, and the bottom of current vortex plate 2 is connected to tubular skeleton 8, and tubular skeleton 8 is wound with current-carrying coil; Magnetic circuit device 5, the bottom of current vortex plate 2 and tubular skeleton 8 are respectively positioned in magnetic circuit device 5;Differential capacitor, differential capacitor includes two capacitor fixed plates 62 and an electric capacity movable plate electrode 61, and capacitor fixed plate 62 is connected with shell, and electric capacity movable plate electrode 61 is connected with sampling quality block 1, and electric capacity movable plate electrode 61 is between two capacitor fixed plates 62; Control change-over circuit, control change-over circuit and be connected with differential capacitor and current-carrying coil respectively, control change-over circuit and the differential capacitance that differential capacitor exports is converted to electric current and is transferred to current-carrying coil.
In the electromagnetic damper that this utility model embodiment provides, owing to sampling quality block 1 is connected with housing by thread connector 3, therefore sampling quality block 1 in the horizontal direction can not opposite shell motion, can only the motion vertically gone up of opposite shell generation. Owing to the bottom of sampling quality block 1 is connected with the top of current vortex plate 2, therefore sampling quality block 1 can drive current vortex plate 2 closer or far from magnetic circuit device 5. In use, when sampling quality block 1 is subject to Vertical disturbing acceleration interference, sampling quality block 1 drives current vortex plate 2 to move to the direction closer or far from magnetic circuit device 5, that is, current vortex plate 2 moves up and down in the magnetic field that magnetic circuit device 5 produces, so that the magnetic flux within current vortex plate 2 changes, forms powerful current vortex in current vortex plate 2, then produce a reverse Lorentz force, then produce damping and hinder sampling quality block 1 to move. And the current vortex that current vortex plate 2 produces eventually is converted into Joule heat and discharges.
Simultaneously, owing to being connected to tubular skeleton 8 in the bottom of current vortex plate 2, tubular skeleton 8 is wound with current-carrying coil, therefore current-carrying coil is arranged in the magnetic field that magnetic circuit device 5 produces, when sampling quality block 1 is subject to Vertical disturbing acceleration interference, sampling quality block 1 band dynamic condenser movable plate electrode 61 moves, so that the distance between electric capacity movable plate electrode 61 and two capacitor fixed plates 62 all produces change, therefore, electric capacity movable plate electrode 61 also changes therewith with the electric capacity produced between two capacitor fixed plates 62 respectively, difference (differential capacitance) between two electric capacity converts electric current to via control change-over circuit and is transferred to current-carrying coil, the effect of the magnetic field Ampere force being subject to due to current-carrying coil is just contrary with the movement tendency of sampling quality block 1, therefore the electrical damping that current-carrying coil is formed can attenuate the vertical disturbance that a part of sampling quality is subject to soon further.
The electromagnetic damper provided due to this utility model embodiment is to utilize conductor (current vortex plate 2) to move in magnetic field to produce the ultimate principle of eddy current effect, relative to fluid damping, environmental temperature fluctuation is insensitive, time constant is little, Gravity changer is delayed little, also be absent from the impact of fluid convection power, the electromagnetic damper that this utility model provides has that damped coefficient is big, noncontact, mechanical friction and wear, need not lubricate, easy to maintenance, high reliability. When the electromagnetic damper that this utility model provides is applied to marine gravitometer, relative to marine gravitometer of the prior art, this low frequency of wave, amplitude vertical disturbance are had better compression effectiveness by the marine gravitometer of the electromagnetic damper that application this utility model embodiment provides, the precision of gravimeter can be improved greatly, meet rapidly and efficiently sea gravity measurement on a large scale.
Below according to Fig. 1 and Fig. 2, the structure of the electromagnetic damper that this utility model embodiment provides is described in more detail.
In the present embodiment, magnetic circuit device 5 includes outer magnetizer 51, interior magnetic conductor 52 and rare-earth permanent magnet body 54, it is provided with containing cavity inside described outer magnetizer, described current vortex plate 2, tubular skeleton 8 and magnet mounting cylinder are placed in described containing cavity, described interior magnetic conductor is installed in described magnet mounting cylinder, and described rare-earth permanent magnet body 54 two ends are connected with interior magnetic conductor and containing cavity respectively.
Magnetic circuit device 5 is as the main executive component of electromagnetic damping, and the generation of accurate, stable electromagnetic force depends on high stability uniform magnetic field. The air-gap field of system is produced by rare-earth permanent magnet body 54, and its characteristic arranges closely related with stability etc. with the performance of permanent magnet material, magnetic structure and parameter, magnet steel operating point. Rare-earth permanent magnet body 54 is low owing to having significantly high coercivity, significantly high magnetic energy product, demagnetizing curve flex point, meets the requirement of magnetic Circuit Design. Rare ten bore the intermetallic compound that permanent magnet material is made up of different rare earth elements and cobalt. Rare earth element refers mainly to 15 kinds of elements that periodic table of chemical element Atom ordinal number is from 56 to 6l. They and transition metal (such as Fe, Co, Ni etc.) can form compound between various metals, XCo (X represents rare earth element) the type compound that wherein rare earth metal and cobalt are formed has significantly high crystalline anisotropy and saturation magnetization, and there is significantly high curie point, it is possible to make the permanent magnet material of excellent performance.
In the one of which detailed description of the invention of this utility model embodiment, shell is cylindrical shell, and the stable axle of the vertical direction of cylindrical shell, sampling quality block 1, current vortex plate 2 and magnetic circuit device 5 is on same straight line. Current vortex plate 2 can be made up of titanium alloy, aluminum or silver, it is preferred to titanium alloy; Sampling quality block 1 can be made up of almag or titanium alloy, it is preferred to titanium alloy, and owing to titanium alloy has significantly high intensity, therefore the later stage Stress Release of the sampling quality block 1 that employing titanium alloy material is made is little, is not susceptible to deformation, and stability is stronger. It is 0.1mm magnetic masking layer that the fast outer surface of sampling quality is coated with thickness, and the effect of magnetic masking layer is that the magnetic line of force avoiding magnetic circuit device 5 rises into the sensitivity of faradic current impact detection spring 4 at detection spring 4.
For the ease of installing thread connector 3, sampling quality block 1 is tubular structure, the quantity of thread connector 3 is preferably six, when the quantity of thread connector 3 is six, thread connector 3 is equally divided into two groups, being separately mounted to upper area and the lower area of the sampling quality block 1 of tubulose, often the thread connector 3 of three in group is uniformly distributed along the circumference of sampling quality block 1 respectively. Specifically, the often thread connector 3 of three in group tangentially mounted along the outer surface of sampling quality block 1 respectively, and on the horizontal plane residing for three thread connectors 3 with group, the cross section of sampling quality block 1 is circular, in this circle, the diameter at the end points place that any one thread connector 3 is connected with sampling quality block 1, the angle between the diameter at the end points place being connected with sampling quality block 1 with another adjacent thread connector 3 is 120 degree. Simultaneously, in order to offset six thread connectors 3 pulling force to sampling quality block 1, on sampling quality block 1, the equidistant place of the thread connector 3 of distance two groups is provided with a pair torsion spring, two torsion springs are all along the tangentially mounted of the outer surface of sampling quality block 1 and be in same level, on the horizontal plane at two torsion spring places, the cross section of sampling quality block 1 is circular, and the center of circle of this circle is the point of symmetry of two torsion springs.
Certainly, the quantity of above-mentioned thread connector 3 is not limited to six, can also be other quantity, such as five, when the quantity of thread connector 3 is five, thread connector 3 is divided into three groups, the quantity having the thread connector 3 in two groups is two, the quantity of the thread connector 3 in another group is one, three groups of thread connectors 3 are respectively arranged in the upper area of sampling quality block 1, central region and lower area, wherein, the thread connector 3 of upper area and lower area is two, the thread connector 3 of central region is one, five thread connectors 3 all tangentially mounted along the outer surface of sampling quality block 1. will be located in the thread connector 3 of central region and project in the plane at superposed thread connector 3 place, when the quantity of the installation site of three thread connectors 3 and above-mentioned thread connector 3 is six, the installation site often organizing interior three thread connectors 3 is identical. upper area is identical with the setting angle of the thread connector 3 in lower area. in order to offset five thread connectors 3 pulling force to sampling quality block 1, on sampling quality block 1, the thread connector 3 place Plane Installation in central region has a pair torsion spring, two torsion springs are all along the tangentially mounted of the outer surface of sampling quality block 1 and be in same level, and the setting angle of two torsion springs is identical with the setting angle of the thread connector 3 in upper area (lower area).
In order to avoid thread connector 3 is bent over, and reduce the Stress Release of thread connector 3, the two ends of thread connector 3 are fixed respectively through the clamping device being packed on sampling quality block 1 and housing, clamping device includes the pair of metal sheet being screwed together, owing to all thread connectors 3 adopt same way to be connected with sampling quality block 1/ housing, therefore for one of them thread connector 3, the connected mode between thread connector 3 and sampling quality block 1 is illustrated below: be correspondingly arranged on two sheet metals in one end of thread connector 3, thread connector 3 is clamped by two sheet metals, two sheet metals are fastened by bolts, thus stepping up thread connector 3, and two sheet metals are connected with sampling quality block 1 by bolt, thus the one end by thread connector 3 is connected with sampling quality block 1. above-mentioned sheet metal can be stainless steel metal sheet.
In the present embodiment, detection spring 4 is connected with sampling quality block 1 by column connector 7, column connector 7 is arranged at the cavity bottom of sampling quality block 1, and the external cylindrical surface of column connector 7 is fixing with the inwall of the cavity of sampling quality to be connected, and detection spring 4 is connected with the upper end of column connector 7. The bottom of column connector 7 is stretched into current vortex plate 2 and is provided with flange, and column connector 7 is connected together by flange and current vortex plate 2.
Current-carrying coil can form for copper wire or filamentary silver coiling, and owing to using filamentary silver relatively costly, therefore current-carrying coil is preferably copper paint envelope curve coiling and forms; The wire diameter of current-carrying coil is too little easily to be broken, and takes up room more, it is preferable that current-carrying coil is formed by the copper paint envelope curve coiling that diameter is 0.06 millimeter during the identical number of turn of the too big coiling of wire diameter.
It should be noted that the electromagnetic damper that this utility model embodiment provides can be applied not only to, in marine gravitometer, apply also for airborne gravitormeter.
This utility model embodiment additionally provides a kind of gravimeter simultaneously, including the electromagnetic damper that above-described embodiment provides.The gravimeter that the present embodiment provides is identical relative to prior art have the advantage that with above-mentioned electromagnetic damper, does not repeat them here.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, it is not intended to limit; Although this utility model being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of this utility model.
Claims (10)
1. an electromagnetic damper, it is characterised in that include shell, and be installed in described shell:
Having the sampling quality block of cavity, described sampling quality block is connected with described shell by thread connector;
Detection spring, one end of described detection spring is connected with described shell, and the other end stretches into the cavity of described sampling quality block and is connected with described sampling quality block;
Current vortex plate, the bottom of described sampling quality block is connected with the top of described current vortex plate, and the bottom of described current vortex plate is connected to tubular skeleton, and described tubular skeleton is wound with current-carrying coil;
Magnetic circuit device, bottom and the described tubular skeleton of described current vortex plate are respectively positioned in described magnetic circuit device;
Differential capacitor, described differential capacitor includes two capacitor fixed plates and an electric capacity movable plate electrode, described capacitor fixed plate is connected with described shell, and described electric capacity movable plate electrode is connected with described sampling quality block, and described electric capacity movable plate electrode is between two described capacitor fixed plates;
Controlling change-over circuit, described control change-over circuit is connected with described differential capacitor and described current-carrying coil respectively, and the differential capacitance that described differential capacitor exports is converted to electric current and is transferred to described current-carrying coil by described control change-over circuit.
2. electromagnetic damper according to claim 1, it is characterised in that described current-carrying coil is formed by the copper paint envelope curve coiling that diameter is 0.07 millimeter.
3. electromagnetic damper according to claim 1, it is characterised in that described sampling quality block is tubulose mass, the outer surface of described sampling quality block is coated with magnetic masking layer.
4. electromagnetic damper according to claim 3, it is characterised in that described thread connector has two groups, often group includes three described thread connectors, and often the described thread connector of three in group is uniformly distributed along the circumference of described sampling quality block respectively.
5. electromagnetic damper according to claim 4, it is characterized in that, being provided with a pair torsion spring for offsetting pulling force on described sampling quality block, described torsion spring is between connector thread described in two groups, and equal with the distance between thread connector described in two groups.
6. electromagnetic damper according to claim 3, it is characterized in that, the two ends of described thread connector are fixed respectively through the clamping device being packed on described sampling quality block and described shell, and described clamping device includes the pair of metal sheet being screwed together.
7. electromagnetic damper according to claim 3, it is characterized in that, described detection spring is connected with described sampling quality block by column connector, described column connector is arranged at the cavity bottom of described sampling quality block, the external cylindrical surface of described column connector is fixing with the inwall of the cavity of described sampling quality to be connected, and described detection spring is connected with the upper end of described column connector.
8. electromagnetic damper according to claim 7, it is characterised in that the bottom of described column connector is stretched into described current vortex plate and is provided with flange, described column connector is connected together by described flange and described current vortex plate.
9. electromagnetic damper according to claim 1, it is characterised in that described shell is cylindrical shell, the stable axle of the vertical direction of described cylindrical shell, described sampling quality block, described current vortex plate and described magnetic circuit device is on same straight line.
10. a gravimeter, it is characterised in that described gravimeter includes the electromagnetic damper as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521126760.3U CN205301606U (en) | 2015-12-29 | 2015-12-29 | Electromagnetic damper and gravity appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521126760.3U CN205301606U (en) | 2015-12-29 | 2015-12-29 | Electromagnetic damper and gravity appearance |
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| Publication Number | Publication Date |
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| CN205301606U true CN205301606U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521126760.3U Withdrawn - After Issue CN205301606U (en) | 2015-12-29 | 2015-12-29 | Electromagnetic damper and gravity appearance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549104A (en) * | 2015-12-29 | 2016-05-04 | 中国科学院测量与地球物理研究所 | Electromagnetic damper and gravimeter |
| CN113687435A (en) * | 2021-09-01 | 2021-11-23 | 中国科学院精密测量科学与技术创新研究院 | Translational gravity/acceleration measurement sensitive structure |
-
2015
- 2015-12-29 CN CN201521126760.3U patent/CN205301606U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549104A (en) * | 2015-12-29 | 2016-05-04 | 中国科学院测量与地球物理研究所 | Electromagnetic damper and gravimeter |
| CN113687435A (en) * | 2021-09-01 | 2021-11-23 | 中国科学院精密测量科学与技术创新研究院 | Translational gravity/acceleration measurement sensitive structure |
| CN113687435B (en) * | 2021-09-01 | 2023-08-04 | 中国科学院精密测量科学与技术创新研究院 | Translational gravity/acceleration measurement sensitive structure |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |