CN207051509U - Axial symmetry elastic system and gravimeter - Google Patents
Axial symmetry elastic system and gravimeter Download PDFInfo
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- CN207051509U CN207051509U CN201721078944.6U CN201721078944U CN207051509U CN 207051509 U CN207051509 U CN 207051509U CN 201721078944 U CN201721078944 U CN 201721078944U CN 207051509 U CN207051509 U CN 207051509U
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- pouring weight
- axial symmetry
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- damping
- electric capacity
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Abstract
The utility model discloses axial symmetry elastic system and gravimeter, learns field with being related to.The utility model provides a kind of axial symmetry elastic system, including the first housing, tune oscillator system, measurement assembly and damping feedback unit, and measurement assembly and damping feedback unit may be contained within the first enclosure interior, adjust oscillator system to be arranged at the end of the first housing.Damping feedback unit includes feedback coil, damping coil and magnet, magnet is fixedly connected on the first housing away from the one end for adjusting oscillator system, feedback coil and damping coil are set around pouring weight, and feedback coil and damping coil are respectively positioned on inside grooves, feedback coil is used to be passed through electric current to detect the position of pouring weight, and damping coil is used to be passed through electric current to provide the power away from recess peripheral wall to pouring weight.A kind of gravimeter, which employs above-mentioned axial symmetry elastic system.Axial symmetry elastic system and gravimeter provided by the utility model can meet high efficiency, acceleration of gravity measurement demand steady in a long-term.
Description
Technical field
Field is learned with the utility model is related to, in particular to axial symmetry elastic system and gravimeter.
Background technology
Terrestrial gravitation acceleration is most basic in a geophysics and most important physical quantity, and is accelerated by gravity
The reflected earth gravitational field of degree also turns into the earth in itself and its one most important physical field of surrounding naturally.How accurate research is
The gravimetric technique of gravity field information then learns the foreword problem in science in field always.Traditional ground gravity survey is limited
In surveying the topography and inefficient, and there is the technological deficiencies such as resolution ratio is low in satellite gravity survey, it is difficult to obtain deeply application.It is and extra large
Empty gravity measurement can on motion carrier, quick, the economic acquisition high accuracy of the special areas such as remote, complicated topographical conditions,
Large area, high-resolution gravity field data, measurement cost is low, metering system is extremely flexible, and complying with Instrument Development and application needs
The future trend asked.
External representational air-sea gravimeter has the Air-Sea of LaCoste＆Romberg companies of the U.S. at present
The GT series of Gravity System types, German KSS series, and Moscow, Russia gravity techniques company, the country is kept
Development have Chinese Academy of Sciences's geodetic CHZ type marine gravitometers.Air-Sea Gravity System type gravity in the said goods
Instrument elastic system uses the oblique pull spring scale structure with displacement equations effect, and complicated in mechanical structure price is high, there have to be certain
Cross-coupled effect, GT series then be using accelerometer be used as gravity sensor, measuring principle is simple, but calculate complexity,
Data processing is cumbersome and measurement accuracy is extremely relied on accelerometer precision, and KSS series gravimeter is to use axial symmetry type
Principle hangs uprighting spring scale, horizontal acceleration and measurement cross-coupled effects can be effectively overcome, due to measuring main spring
It is to hang in longer tubulose detection quality endoporus, detection quality is needed in three planes of upper, middle and lower of vertical direction with five
Root wire drawing and two spring hard constraints its motion states, add assembly difficulty and Automatic manual transmission error, limit instrument essence
The raising of degree, while inverted pendulum spring scale structure (micrometer system suspended end on spring) reduces the mechanical stability of probe, its
Feedback of electromagnetic force scheme also limit the raising of instrumental resolution.In addition, uprighting spring scale structure and the positioning of class axial symmetry type are special
Point is also successfully used in CHZ marine gravitometers, and its dynamic accuracy can reach 1mGal, but its tubulose quality pendulum structure and constraint side
Formula is similar with KSS, while feedback of electromagnetic force technical scheme has larger dynamic range, limits the raising of instrumental resolution.
Utility model content
The purpose of this utility model is to provide a kind of axial symmetry elastic system, and it has long period, high stability, assembling
Difficulty is low, overcomes the advantages of nonlinear disturbance, and can meet a wide range of, high efficiency, acceleration of gravity steady in a long-term measurement
Demand.
Another object of the present utility model is to provide a kind of gravimeter, and it has long period, high stability, assembly difficulty
It is low, overcome the advantages of nonlinear disturbance, and a wide range of, high efficiency, acceleration of gravity measurement demand steady in a long-term can be met.
The utility model provides a kind of technical scheme：
A kind of axial symmetry elastic system, including the first housing, tune oscillator system, measurement assembly and damping feedback unit, it is described
First enclosure interior has the first accommodation space, and the measurement assembly and the damping feedback unit may be contained within described first and hold
Interior volume is put, the tune oscillator system is arranged at the end of first housing and is inserted into first accommodation space.And
The measurement assembly includes zero-initial-length spring, micrometer unit and pouring weight, and one end of the zero-initial-length spring is connected to the tune oscillator system,
The pouring weight is connected to the other end of the zero-initial-length spring, and the micrometer unit is connected with the pouring weight, and the micrometer unit is used
In the displacement for detecting the pouring weight.The damping feedback unit includes feedback coil, damping coil and magnet, and the magnet is consolidated
Surely the one end of first housing away from the tune oscillator system is connected to, and the magnet is close to the side of the tune oscillator system
The groove for being right against the tune oscillator system is offered, the pouring weight stretches into the groove, the feedback coil and the damping wire
Circle is set around the pouring weight, and the feedback coil and the damping coil are respectively positioned on the inside grooves, the feedback
Coil is used to be passed through electric current to detect the position of the pouring weight, and the damping coil is used to be passed through electric current to provide to the pouring weight
Power away from the recess peripheral wall.
Further, the micrometer unit includes electric capacity moving plate, the first capacitor fixed plate and the second capacitor fixed plate, the electric capacity
Moving plate is fixedly connected on the pouring weight, and first capacitor fixed plate and second capacitor fixed plate are fixedly connected with described first
Housing, the electric capacity moving plate are arranged between first capacitor fixed plate and second capacitor fixed plate, the electric capacity moving plate point
The first electric capacity and the second electric capacity are not formed with first capacitor fixed plate and second capacitor fixed plate, and the electric capacity moves
Piece, first capacitor fixed plate and second capacitor fixed plate are parallel two-by-two.
Further, the distance between the electric capacity moving plate and described first capacitor fixed plate and the electric capacity moving plate with it is described
The distance between second capacitor fixed plate is equal.
Further, the measurement assembly also includes 6n wire drawing, and wherein n is positive integer, one end of the 6n wire drawings
The circumferencial direction of the pouring weight is uniformly distributed in, the other end of the 6n wire drawings is uniformly distributed in first accommodation space
Internal perisporium, and in 6n wire drawings are generally aligned in the same plane.
Further, the tune oscillator system includes drive component and lifting structure, and the drive component is fixedly connected on institute
State the first housing, the lifting structure is connected with the zero-initial-length spring, the drive component be connected with the lifting structure and
The drive component can be used to drive bearing of trend of the lifting structure along the zero-initial-length spring to move.
Further, the drive component includes stepless speed-change motor and central gear, and the stepless speed-change motor is fixed
First housing is connected to, the stepless speed-change motor is connected with the central gear, and the stepless speed-change motor is used for band
The dynamic central gear rotates, and the central gear center offers screwed hole, and the lifting structure includes elevating screw, described
Elevating screw is connected by the screwed hole with the central gear, and one end of the elevating screw is connected to the distance of zero mark
Spring.
A kind of gravimeter, including temperature control device, data collecting system, gyro-stabilized platform and axial symmetry elastic system, institute
Stating axial symmetry elastic system includes the first housing, adjusts oscillator system, measurement assembly and damping feedback unit, first enclosure interior
With the first accommodation space, the measurement assembly and the damping feedback unit may be contained within inside first accommodation space,
The tune oscillator system is arranged at the end of first housing and is inserted into first accommodation space.And the measurement assembly
Including zero-initial-length spring, micrometer unit and pouring weight, one end of the zero-initial-length spring is connected to the tune oscillator system, the pouring weight connection
In the other end of the zero-initial-length spring, the micrometer unit is connected with the pouring weight, and the micrometer unit is described heavy for detecting
The displacement of block.The damping feedback unit includes feedback coil, damping coil and magnet, and the magnet is fixedly connected on described
The one end of first housing away from the tune oscillator system, and the magnet is offered close to the side of the tune oscillator system and is right against
The groove for adjusting oscillator system, the pouring weight stretch into the groove, and the feedback coil and the damping coil are set around institute
Pouring weight is stated, and the feedback coil and the damping coil are respectively positioned on the inside grooves, and the feedback coil is used to be passed through
To detect the position of the pouring weight, the damping coil is used to be passed through electric current to provide away from the groove to the pouring weight electric current
The power of perisporium.The temperature control device has the second accommodation space, and the axial symmetry elastic system is arranged at the described second accommodating sky
Between it is internal, the data collecting system is connected with the pouring weight, and the data collecting system is for gathering the pouring weight
Displacement, the temperature control device are connected with the gyro-stabilized platform, and the gyro-stabilized platform is used for the zero-initial-length spring
Bearing of trend be maintained at the gravity direction of the pouring weight.
Further, the temperature control device includes the second housing, shield shell, the first thermostat layer, the second thermostat layer, first
Heat-insulation layer and the second heat-insulation layer, the axial symmetry elastic system are arranged at the inside of shield casings, and the shield shell is set
Gap is formed inside first thermostat layer and with the first thermostat layer internal perisporium, first thermostat layer is arranged at described
Inside first heat-insulation layer and the internal perisporium of first heat-insulation layer is fitted in, first heat-insulation layer is arranged at second constant temperature
Layer is internal and fits in the internal perisporium of second thermostat layer, and second thermostat layer is arranged inside second heat-insulation layer simultaneously
The internal perisporium of second heat-insulation layer is fitted in, second heat-insulation layer is arranged at second enclosure interior and fitted in described
The internal perisporium of second housing, the outside of second housing are connected with the gyro-stabilized platform.
Further, the temperature control device also includes temperature conditioning unit, on the shield shell and second thermostat layer around
Provided with the wire being connected with the temperature conditioning unit, the wire is used to heat the shield shell and second constant temperature
Layer.
Further, the gravimeter also includes at least three suspenders, and described suspender one end is fixedly connected on described
First housing, the other end of the suspender are connected to the temperature control device, and at least three suspender surrounds regular polygon,
The zero-initial-length spring is identical with the distance between each suspender.
Compared with prior art, the beneficial effect of axial symmetry elastic system and gravimeter provided by the utility model is：
Axial symmetry elastic system and gravimeter provided by the utility model can accurately measure present bit by micrometer unit
The acceleration of gravity put, and the position of pouring weight can be detected by feedback coil, to judge the position of pouring weight if appropriate for measuring and calculating weight
Power acceleration.By damping coil can pouring weight can keep stable state, avoid pouring weight from rocking the essence of bias effect measurement
Degree.By adjusting oscillator system to adjust the position of pouring weight so that pouring weight is in the posture for being adapted to measurement acceleration of gravity.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described.It should be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as.For those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation for the gravimeter that embodiment of the present utility model provides；
Fig. 2 is enlarged diagram at II in Fig. 1；
Fig. 3 is enlarged diagram at III in Fig. 1；
Fig. 4 is enlarged diagram at IV in Fig. 1.
Icon：10- gravimeters；11- axial symmetry elastic systems；12- temperature control devices；13- data collecting systems；14- gyros
Stabilized platform；15- suspenders；The housings of 100- first；The accommodation spaces of 110- first；120- connecting plates；200- measurement assemblies；210-
Zero-initial-length spring；220- micrometer units；221- electric capacity moving plates；The capacitor fixed plates of 222- first；The capacitor fixed plates of 223- second；224- first
Electric capacity；The electric capacity of 225- second；230- pouring weights；240- wire drawings；300- adjusts oscillator system；310- drive components；311- variable speed electricity
Machine；312- central gears；320- lifting structures；321- elevating screws；400- damps feedback unit；410- feedback coils；420-
Damping coil；430- magnets；431- grooves；The accommodation spaces of 510- second；The housings of 520- second；530- shield shells；540-
One thermostat layer；541- the first constant temperature holding parts；542- the first constant temperature lids；The thermostat layers of 550- second；551- the second constant temperature holding parts；
552- the second constant temperature lids；The heat-insulation layers of 560- first；561- first is incubated holding part；The insulation covers of 562- first；570- second is incubated
Layer；571- second is incubated holding part；The insulation covers of 572- second；580- temperature conditioning units；600- buffer units.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described.Obviously, retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In description of the present utility model, it is to be understood that term " on ", " under ", " interior ", " outer ", "left", "right" etc.
The orientation or position relationship of instruction be based on orientation shown in the drawings or position relationship, or the utility model product use when
The orientation or position relationship usually put, or the orientation that usually understands of those skilled in the art or position relationship, be only for
Be easy to describe the utility model and simplify to describe, rather than instruction or imply signified equipment or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relatively important
Property.
In description of the present utility model, it is also necessary to explanation, unless otherwise clearly defined and limited, " setting ",
Terms such as " connections " should be interpreted broadly, for example, " connection " can be fixedly connected or be detachably connected, or one
Ground connects；Can be mechanical connection or electrical connection；Can be directly connected to, can also by between intermediary in succession
Connect, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be
Concrete meaning of the above-mentioned term in the utility model.
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail.
Embodiment
Referring to Fig. 1, a kind of gravimeter 10 is present embodiments provided, for measuring the acceleration of gravity of current location, its
With long period, high stability, assembly difficulty is low, overcomes the advantages of nonlinear disturbance, and can meet a wide range of, high efficiency,
Acceleration of gravity measurement demand steady in a long-term.
Wherein, gravimeter 10 includes axial symmetry elastic system 11, temperature control device 12, data collecting system 13, gyrocontrol
Platform 14 and suspender 15.Axial symmetry elastic system 11 is fixedly connected on temperature control device 12, and axial symmetry by suspender 15
Elastic system 11 is located at the inside of temperature control device 12, and axial symmetry elastic system 11 accelerates for measuring the gravity of current location
Degree.Data collecting system 13 is connected to axial symmetry elastic system 11, and data collecting system 13 is used to gather axial symmetry elasticity
The data that system 11 measures.Temperature control device 12 is connected with gyro-stabilized platform 14, to enable axial symmetry elastic system 11 to pass through
Gyro-stabilized platform 14 is held in the posture for being adapted to measurement acceleration of gravity.
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are please referred to, axial symmetry elastic system 11 includes the first housing 100, measurement assembly
200th, oscillator system 300 and damping feedback unit 400 are adjusted.The inside of first housing 100 has the first accommodation space 110, measurement assembly
200 may be contained within inside the first accommodation space 110 with damping feedback unit 400, and wherein measurement assembly 200 adds for measuring gravity
Speed.Oscillator system 300 is adjusted to be arranged at the ground end of the first housing 100 and stretch into the first accommodation space 110, the first housing 100 is to tune
Oscillator system 300 provides support, and adjusts oscillator system 300 to be connected with measurement assembly 200, adjusts oscillator system 300 to be used to adjust measurement group
The position of part 200, to improve the measuring speed of measurement assembly 200 and measurement accuracy.Damping feedback unit 400 is arranged at the
One one end of housing 100 away from tune oscillator system 300, and damp feedback unit 400 and be connected with measurement assembly 200, and damp
Feedback unit 400 is used to prevent measurement assembly 200 from producing skew and influenceing measurement result, and damps feedback unit 400 and also use
In the state that is presently in of detection measurement assembly 200 to judge measurement assembly 200 currently if appropriate for starting to measure.
Fig. 1 and Fig. 2 are please referred to, measurement assembly 200 includes zero-initial-length spring 210, micrometer unit 220 and pouring weight 230, its
One end of middle zero-initial-length spring 210, which is connected to, adjusts oscillator system 300, and pouring weight 230 is connected to the other end of zero-initial-length spring 210, micrometer list
Member 220 is connected with pouring weight 230, and micrometer unit 220 is used for the displacement for detecting pouring weight 230.
Wherein, pouring weight 230 has dead-center position, and when pouring weight 230 is in dead-center position, current acceleration of gravity is
The amount of knowing.Where it is assumed that when gravimeter 10 is in first position, pouring weight 230 is in dead-center position, by gravimeter 10 from first
Put and be moved to apart from the second place of first position certain distance, now due to the acceleration of gravity of first position and the second place
Gravity different then that pouring weight 230 is received changes, then causes pouring weight 230 to produce displacement.Pouring weight is measured by micrometer unit 220
230 displacement goes out pouring weight 230 to zero to determine the elongation of zero-initial-length spring 210 with the lengthening variable of zero-initial-length spring 210
The variable quantity of the long pulling force of spring 210, the variable quantity of acceleration of gravity can then be calculated by the variable quantity of pulling force, learning distance of zero mark
In the case of the acceleration of gravity of the dead-center position of spring 210, then the acceleration of gravity of the second place can be calculated.
In the present embodiment, by adjusting oscillator system 300 to adjust the position of pouring weight 230, so that gravimeter 10 is before measuring,
Pouring weight 230 is in dead-center position, ensure that gravimeter 10 measures the accuracy of gravity.It can be fed back by damping feedback unit 400
The position of current pouring weight 230, in order to adjust the position of pouring weight 230, and damp feedback unit 400 and can be provided to pouring weight 230
One power to tend to balance so that the bearing of trend of zero-initial-length spring 210 can be maintained at the direction of the gravity of pouring weight 230.Need to illustrate
, what the posture of suitable measurement acceleration of gravity mentioned above referred to is the bearing of trend and pouring weight 230 of zero-initial-length spring 210
The posture that gravity direction coincides.
By adjusting oscillator system 300 and damping regulation and control pouring weight 230 He of the feedback unit 400 to pouring weight 230 and zero-initial-length spring 210
The position of zero-initial-length spring 210, and pouring weight 230 can be maintained to the posture for being adapted to measurement acceleration of gravity in measurement so that
The micrometer unit 220 being arranged on pouring weight 230 can measure accurate value, can guarantee that the accuracy of measurement result.
Wherein, micrometer unit 220 includes electric capacity moving plate 221, the first capacitor fixed plate 222 and the second capacitor fixed plate 223.Electric capacity
Moving plate 221 is fixedly connected on pouring weight 230, so that electric capacity moving plate 221 can follow pouring weight 230 to move.First capacitor fixed plate 222 and
Two capacitor fixed plates 223 are fixedly connected with the first housing 100.Also, electric capacity moving plate 221 is arranged at the He of the first capacitor fixed plate 222
Between second capacitor fixed plate 223, with cause electric capacity moving plate 221 respectively with the first capacitor fixed plate 222 and the shape of the second capacitor fixed plate 223
Into the first electric capacity 224 and the second electric capacity 225.Electric capacity moving plate 221, the first capacitor fixed plate 222 and the second capacitor fixed plate 223 are put down two-by-two
OK.
In the present embodiment, the first housing 100 is internally provided with connecting plate 120, and the side of connecting plate 120 is connected to first
The internal perisporium of accommodation space 110, and connecting plate 120 is provided centrally with through hole (figure do not mark), pouring weight 230 is through through hole and resistance
Buddhist nun's feedback unit 400 connects.Wherein, the first capacitor fixed plate 222 and the second capacitor fixed plate 223 are fixedly connected on connecting plate 120.
Wherein, when gravimeter 10 is moved to the second place from first position, pouring weight 230 produces displacement so that electric capacity moves
The distance between the capacitor fixed plate 222 of piece 221 and first and the capacitor fixed plate 223 of electric capacity moving plate 221 and second produce change, so that
The electricity capacity for obtaining the first electric capacity 224 and the second electric capacity 225 produces change, is held by calculating the first electric capacity 224 and the second electric capacity 225
Difference between electricity is to determine the amount of movement of electric capacity moving plate 221, so as to learn the displacement of pouring weight 230, can calculate and work as
The acceleration of gravity of front position.
The displacement of electric capacity moving plate 221 and pouring weight 230 is obtained by the difference for calculating the first electric capacity 224 and the second electric capacity 225
Amount so that the value of measuring and calculating is more accurate, it is not necessary to which interpolation data amplifying device can also obtain comparatively accurately being worth, and energy
The sensitivity of micrometer unit 220 is improved, during ensureing that the acceleration of gravity of first position and second place two places difference is smaller
The acceleration of gravity of the second place can relatively accurately be measured.
Wherein, when pouring weight 230 is in dead-center position, the capacitor fixed plate 222 of electric capacity moving plate 221 and first and the second electric capacity are determined
The distance between piece 223 is equal.During make it that pouring weight 230 is located at dead-center position, the appearance of the first electric capacity 224 and the second electric capacity 225
Electricity is identical, with cause calculate difference when it is more convenient.And can guarantee that electric capacity moving plate 221 can towards the first capacitor fixed plate 222 or
The distance that the second capacitor fixed plate of person 223 moves is identical so that electric capacity moving plate 221 will not be by the shadow of distance toward both sides movement
Ring, ensure the general applicability of gravimeter 10.
Further, measurement assembly 200 also includes 6n wire drawing 240, and wherein n is positive integer.One end of 6n wire drawing 240
The circumferencial direction of pouring weight 230 is distributed evenly in, the other end of 6n wire drawing 240 is distributed evenly in the first accommodation space 110
Internal perisporium, and in 6n wire drawing 240 be generally aligned in the same plane.In the present embodiment, the quantity of wire drawing 240 is 6, each two
60 degree of angle is formed between adjacent wire drawing 240.
In the present embodiment, the free degree of 6 hard constraints pouring weights 230 of wire drawing 240, and it is small to have pouring weight 230
Ground rotates, and has axisymmetric design feature, can suppress cross-coupling effect.That is, pouring weight 230 is maintained at suitable by 6 wire drawings 240
The posture of measurement acceleration of gravity is closed, it is not in swing to be further ensured that pouring weight 230, ensures the accurate of acceleration of gravity measurement
Property.
Fig. 1 and Fig. 3 are please referred to, adjusts oscillator system 300 to include drive component 310 and lifting structure 320, wherein driving group
Part 310 is fixedly connected on the first housing 100, and lifting structure 320 is connected with zero-initial-length spring 210, drive component 310 and lifting structure
320 connect and for driving bearing of trend of the lifting structure 320 along zero-initial-length spring 210 to move.That is, when pouring weight 230 deviates from zero
During point position, drive lifting structure 320 to drive zero-initial-length spring 210 to extend along direction by drive component 310 and move, to drive
Bearing of trend of the pouring weight 230 along zero-initial-length spring 210 is moved so that pouring weight 230 is adjusted to zero into position, in order to second place weight
The measuring and calculating of power acceleration.
Wherein, drive component 310 includes stepless speed-change motor 311 and central gear 312, wherein stepless speed-change motor 311,
Stepless speed-change motor 311 is fixedly connected on the first housing 100, and stepless speed-change motor 311 is connected with central gear 312, nothing
Level variable speed electric motors, particularly 311 is used to drive central gear 312 to rotate.In addition, the center of central gear 312 offers screwed hole, (figure is not
Mark).Lifting structure 320 includes elevating screw 321, and elevating screw 321 is connected by screwed hole with central gear 312, and is risen
One end of drop screw mandrel 321 is connected to zero-initial-length spring 210.Wherein, when stepless speed-change motor 311 drives central gear 312 to rotate,
Central gear 312 drives elevating screw 321 to move, to cause elevating screw 321 to drive zero-initial-length spring 210 to move, by pouring weight
230 adjust to zero position.
In the present embodiment, oscillator system 300 is adjusted also to include deceleration system (not shown), deceleration system is connected to central gear
Between 312 and stepless speed-change motor 311, and the speed reducing ratio of deceleration system is up to 1000, to realize micron order fine adjustment function.
Fig. 1 and Fig. 4 are please referred to, damping feedback unit 400 includes feedback coil 410, damping coil 420 and magnet
430, wherein magnet 430 is fixedly connected on the first housing 100 away from the one end for adjusting oscillator system 300, and magnet 430 is put close to tune
The side of system 300 offers the groove 431 for being right against and adjusting oscillator system 300, and pouring weight 230 is stretched into inside groove 431.Feedback coil
410 and damping coil 420 be set around pouring weight 230, and feedback coil 410 and damping coil 420 are respectively positioned in groove 431
Portion.Feedback coil 410 is used to be passed through electric current to detect the position of pouring weight 230.Damping coil 420 is used to be passed through electric current with to pouring weight
230 provide the power away from the perisporium of groove 431.
Wherein, magnet 430 forms stable and high-strength uniform magnetic field in groove 431.Feedback coil 410 is in energization
Afterwards, the position of pouring weight 230 by the power in magnetic field, can be detected by the size and direction that detect power, whether to judge pouring weight 230
Posture in suitable measurement acceleration of gravity.Damping coil 420 equally can be realized electromagnetism by the power in magnetic field upon power-up
The function of damping, ensure the stabilization of pouring weight 230.
The axial symmetry elastic system 11 of above-mentioned offer can accurately calculate the gravity of current location by micrometer unit 220
Acceleration, and by the position of the feedback pouring weight 230 of feedback coil 410, judge whether pouring weight 230 is in dead-center position.If weight
Block 230 is not at dead-center position, then by driving stepless speed-change motor 311 to drive central gear 312 to rotate, and drives lifting
Screw mandrel 321 is moved, and pouring weight 230 is adjusted to zero into position, in order to measure acceleration of gravity.It is logical by damping coil 420
Electric stress ensures that pouring weight 230 is in stable position, and by setting 6n wire drawing 240 to be further ensured that the steady of pouring weight 230
It is qualitative.
Referring to Fig. 1, temperature control device 12 has the second accommodation space 510, axial symmetry elastic system 11 houses positioned at second
Inside space 510.The stabilization of the temperature of residing environment during ensureing that axial symmetry elastic system 11 works by temperature control device 12
Property, improve the accuracy for measuring acceleration of gravity.In addition, temperature control device 12 includes the second housing 520, shield shell 530, first
Thermostat layer 540, the second thermostat layer 550, the first heat-insulation layer 560, the second heat-insulation layer 570 and temperature conditioning unit 580.Its formed symmetrical bullet
Sexual system 11 is arranged inside shield shell 530, shield shell 530 be arranged at the inside of the first thermostat layer 540 and with the first constant temperature
The internal perisporium of layer 540 forms gap, and the first thermostat layer 540 is arranged at the inside of the first heat-insulation layer 560 and fits in the first heat-insulation layer
560 internal perisporium, the first heat-insulation layer 560 are arranged at the inside of the second thermostat layer 550 and fit in the inner circumferential of the second thermostat layer 550
Wall, the second thermostat layer 550 are arranged at the inside of the second heat-insulation layer 570 and fit in the inside of the second heat-insulation layer 570, the second insulation
Layer 570 is arranged at the inside of the second housing 520 and fits in the internal perisporium of the second housing 520.Pass through the heat-insulation layer and perseverance of multilayer
Warm layer ensures axial symmetry elastic system 11 to ensure that axial symmetry elastic system 11 is in a metastable working environment of temperature
Measuring accuracy.
In the present embodiment, the first thermostat layer 540 includes the first constant temperature holding part 541 and the first constant temperature lid 542, and first is permanent
Warm lid 542 is optionally covered on the first constant temperature holding part 541 to form closed closing space.Second thermostat layer 550 wraps
The second constant temperature holding part 551 and the second constant temperature lid 552 are included, the second constant temperature lid 552 is optionally covered on the second constant temperature holding part
To form confined space on 551.First heat-insulation layer 560 includes the first insulation insulation cover 562 of holding part 561 and first, and first protects
Warm lid 562 is optionally covered on the first insulation holding part 561 to form confined space.Second heat-insulation layer 570, which includes second, to be protected
The warm insulation cover 572 of holding part 571 and second, the second insulation cover 572 are optionally covered on the second insulation holding part 571 to be formed
Confined space.
Further, it is arranged with the wire being connected with temperature conditioning unit 580 on the thermostat layer 550 of shield shell 530 and second
(not shown), temperature conditioning unit 580 are used to control wire to heat the thermostat layer 550 of shield shell 530 and second.Pass through temperature conditioning unit
580 control wires heat to the thermostat layer 550 of shield shell 530 and second so that can also pass through temperature control device in low temperature environment
The temperature of the working environment of axial symmetry elastic system 11 is maintained at a stable state by 12, ensures axial symmetry elastic system 11
Accuracy.
In addition, suspender 15 is used to make axial symmetry elastic system 11 keep stable in the second accommodation space 510.Suspender
15 one end is fixedly connected on the first housing 100, and the other end of suspender 15 is connected to temperature control device 12.Wherein suspender 15 to
It is three less.In the present embodiment, illustrate by taking three suspenders 15 as an example.Three suspenders 15 surround equilateral triangle, and
Zero-initial-length spring 210 is identical with the distance of three suspenders 15, i.e. straight line is by above-mentioned where the bearing of trend of zero-initial-length spring 210
The center of equilateral triangle is simultaneously parallel with suspender 15.It should be appreciated that in other embodiments, suspender 15 is four, five
Or when six etc., same multiple suspenders 15 surround square, regular pentagon or regular hexagon, and distance of zero mark bullet
The bearing of trend of spring 210 also passes through the center line of square, regular pentagon or regular hexagon and parallel with suspender 15.
In the present embodiment, temperature control device 12 is arranged inside gyro-stabilized platform 14.Wherein, the second housing 520 is outer
Side is connected with gyro-stabilized platform 14.Gyro-stabilized platform 14 can make temperature control device 12 be in the state of balance and stability, can make
The state of balance and stability can be in by obtaining axial symmetry elastic system 11 so that pouring weight 230, which can be in, is adapted to measurement acceleration of gravity
Posture.Buffer unit 600 is provided with gyro-stabilized platform 14, buffer unit 600 is used to significantly to shake to slow down to be small
The vibrations of amplitude, ensure that the state of pouring weight 230 is not affected, ensure the accuracy of acceleration of gravity measurement.
The gravimeter 10 that the present embodiment provides can accurately measure the gravity of current location by axial symmetry elastic system 11
Angular speed.Protected by the first thermostat layer 540, the second thermostat layer 550, the first heat-insulation layer 560, second that are set in temperature control device 12
The protection of the warm horizontal multilayer of shield shell 530 of layer 570 and insulation effect so that the working environment of axial symmetry elastic system 11 maintains
In stable state, stability and accuracy that axial symmetry elastic system 11 measures ensure that.Axle pair is ensured by suspender 15
Claim the stability of elastic system 11.Balance and the stabilization of temperature control device 12 are maintained and then guarantee axle pair by gyro-stabilized platform 14
Claim the balance and stably of elastic system 11.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (10)
1. a kind of axial symmetry elastic system, it is characterised in that including the first housing, adjust oscillator system, measurement assembly and damping feedback
Unit, first enclosure interior have the first accommodation space, and the measurement assembly and the damping feedback unit may be contained within
Inside first accommodation space, the tune oscillator system is arranged at the end of first housing and is inserted into described first and houses
Space；
And the measurement assembly includes zero-initial-length spring, micrometer unit and pouring weight, one end of the zero-initial-length spring is connected to described
Oscillator system is adjusted, the pouring weight is connected to the other end of the zero-initial-length spring, and the micrometer unit is connected with the pouring weight, the survey
Micro unit is used for the displacement for detecting the pouring weight；
The damping feedback unit includes feedback coil, damping coil and magnet, and the magnet is fixedly connected on the first shell
The one end of body away from the tune oscillator system, and the magnet offers close to the side of the tune oscillator system and is right against the tune
The groove of oscillator system, the pouring weight stretch into the groove, and the feedback coil and the damping coil are set around the pouring weight,
And the feedback coil and the damping coil are respectively positioned on the inside grooves, the feedback coil is used to be passed through electric current to examine
The position of the pouring weight is surveyed, the damping coil is used to be passed through electric current to provide away from the recess peripheral wall to the pouring weight
Power.
2. axial symmetry elastic system according to claim 1, it is characterised in that the micrometer unit include electric capacity moving plate,
First capacitor fixed plate and the second capacitor fixed plate, the electric capacity moving plate are fixedly connected on the pouring weight, first capacitor fixed plate and
Second capacitor fixed plate is fixedly connected with first housing, the electric capacity moving plate be arranged at first capacitor fixed plate and
Between second capacitor fixed plate, the electric capacity moving plate is formed with first capacitor fixed plate and second capacitor fixed plate respectively
First electric capacity and the second electric capacity, and the electric capacity moving plate, first capacitor fixed plate and second capacitor fixed plate are put down two-by-two
OK.
3. axial symmetry elastic system according to claim 2, it is characterised in that the electric capacity moving plate and first electric capacity
The distance between stator and the electric capacity moving plate are equal with the distance between second capacitor fixed plate.
4. axial symmetry elastic system according to claim 1, it is characterised in that the measurement assembly also includes 6n drawing
Silk, wherein n are positive integer, and one end of the 6n wire drawings is uniformly distributed in the circumferencial direction of the pouring weight, the 6n drawings
The other end of silk is uniformly distributed in the internal perisporium of first accommodation space, and in the 6n wire drawings are generally aligned in the same plane.
5. axial symmetry elastic system according to claim 1, it is characterised in that it is described tune oscillator system include drive component and
Lifting structure, the drive component are fixedly connected on first housing, and the lifting structure is connected with the zero-initial-length spring, institute
State drive component be connected with the lifting structure and the drive component be used for drive the lifting structure along the distance of zero mark bullet
The bearing of trend movement of spring.
6. axial symmetry elastic system according to claim 5, it is characterised in that the drive component includes variable speed electricity
Machine and central gear, the stepless speed-change motor are fixedly connected on first housing, the stepless speed-change motor with it is described in
Heart gear connects, and the stepless speed-change motor is used to drive the central gear to rotate, and the central gear center offers spiral shell
Pit, the lifting structure include elevating screw, and the elevating screw is connected by the screwed hole with the central gear, and
And one end of the elevating screw is connected to the zero-initial-length spring.
7. a kind of gravimeter, it is characterised in that including temperature control device, data collecting system, gyro-stabilized platform and such as right will
The axial symmetry elastic system described in 1-6 any one is sought, the temperature control device has the second accommodation space, the axial symmetry elasticity
System is arranged inside second accommodation space, and the data collecting system is connected with the pouring weight, and the data are adopted
Collecting system is used for the displacement for gathering the pouring weight, and the temperature control device is connected with the gyro-stabilized platform, and the gyro is steady
Fixed platform is used for the gravity direction that the bearing of trend of the zero-initial-length spring is maintained to the pouring weight.
8. gravimeter according to claim 7, it is characterised in that the temperature control device include the second housing, shield shell,
First thermostat layer, the second thermostat layer, the first heat-insulation layer and the second heat-insulation layer, the axial symmetry elastic system are arranged at the shielding
Enclosure interior, the shield shell are arranged inside first thermostat layer and between the first thermostat layer internal perisporium formation
Gap, first thermostat layer is arranged inside first heat-insulation layer and fits in the internal perisporium of first heat-insulation layer, described
First heat-insulation layer is arranged inside second thermostat layer and fits in the internal perisporium of second thermostat layer, second constant temperature
Layer is arranged inside second heat-insulation layer and fits in the internal perisporium of second heat-insulation layer, and second heat-insulation layer is arranged at
Second enclosure interior and the internal perisporium for fitting in second housing, outside and the gyrocontrol of second housing
Platform connects.
9. gravimeter according to claim 8, it is characterised in that the temperature control device also includes temperature conditioning unit, the screen
Cover and the wire being connected with the temperature conditioning unit is arranged with housing and second thermostat layer, the wire is used to heat institute
State shield shell and second thermostat layer.
10. gravimeter according to claim 7, it is characterised in that the gravimeter also includes at least three suspenders, institute
State suspender one end and be fixedly connected on first housing, the other end of the suspender is connected to the temperature control device, described
At least three suspenders surround regular polygon, and the zero-initial-length spring is identical with the distance between each suspender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721078944.6U CN207051509U (en) | 2017-08-25 | 2017-08-25 | Axial symmetry elastic system and gravimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721078944.6U CN207051509U (en) | 2017-08-25 | 2017-08-25 | Axial symmetry elastic system and gravimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207051509U true CN207051509U (en) | 2018-02-27 |
Family
ID=61503709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721078944.6U Withdrawn - After Issue CN207051509U (en) | 2017-08-25 | 2017-08-25 | Axial symmetry elastic system and gravimeter |
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| Country | Link |
|---|---|
| CN (1) | CN207051509U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329184A (en) * | 2017-08-25 | 2017-11-07 | 中国科学院测量与地球物理研究所 | Axial symmetry elastic system 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 |
-
2017
- 2017-08-25 CN CN201721078944.6U patent/CN207051509U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329184A (en) * | 2017-08-25 | 2017-11-07 | 中国科学院测量与地球物理研究所 | Axial symmetry elastic system and gravimeter |
| CN107329184B (en) * | 2017-08-25 | 2023-10-20 | 中国科学院精密测量科学与技术创新研究院 | Axisymmetric elastic system 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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