CN107065026A - A kind of Mainspring type spring relative gravity instrument - Google Patents
A kind of Mainspring type spring relative gravity instrument Download PDFInfo
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- CN107065026A CN107065026A CN201710145560.XA CN201710145560A CN107065026A CN 107065026 A CN107065026 A CN 107065026A CN 201710145560 A CN201710145560 A CN 201710145560A CN 107065026 A CN107065026 A CN 107065026A
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- spring
- polar plate
- adjusting knob
- plate bracket
- bottom crown
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V7/00—Measuring gravitational fields or waves; Gravimetric prospecting or detecting
- G01V7/02—Details
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Details Of Measuring And Other Instruments (AREA)
Abstract
The invention provides a kind of Mainspring type spring relative gravity instrument, for relative gravity measurement.Including：Mainspring type spring (1), spring support (10), spring adjusting knob (4), weight (2), upper bottom crown (3), up and down pole plate adjusting knob (5), polar plate bracket (7), up and down polar plate bracket base (8), up and down polar plate bracket adjusting knob (6) and gravimeter base (9).Its clockwork spring structure of the present invention causes the deformation of spring to surround clockwork spring central rotation, substantially reduces the space scale of camber of spring, and stretching 20cm or even longer effect can be reached in the space of very little；Further, since the rigid sheet structure of Mainspring type spring, makes it higher in other directional stiffness, be conducive to the clamped of spring and protection.
Description
Technical field
The invention belongs to a kind of Mechanics of Machinery structure, electronic measurement system, more particularly to a kind of Mainspring type spring are relatively heavy
Power instrument.
Background technology
In geophysics and geodesic survey, it is often necessary to which the relative change to acceleration of gravity is measured, this class
Instrument is referred to as relative gravity instrument.High-precision relative gravity instrument typically uses zero-initial-length spring or uprighting spring.Either distance of zero mark bullet
Spring or uprighting spring gravimeter, its general principle are all spring elastic deformations under weight effect, are become by the elasticity of spring
Shape measures the change of acceleration of gravity.(the measurement sensitivity of high-precision relative gravity instrument the need in order to adapt to high-acruracy survey
Up to 0.002mGal even more highs), the sensitivity of spring is high, can experience atomic small change in gravitational acceleration.So Gao Ling
The spring of sensitivity, under a gravity acceleration environment (the basic gravity environment normally used), its tensile elongation up to 15~
20cm, spring be exactly extend 15~20cm under conditions of perceive acceleration of gravity minor variations, in addition device measuring circuit,
Machinery adjustment, protecting device for spring, high-precision relative gravity instrument volume are general all than larger.
Accordingly, it would be desirable to the relative gravity instrument of a kind of compact conformation, small volume.
The content of the invention
The present invention is in view of the above-mentioned problems, propose a kind of clockwork spring formula relative gravity instrument, and its compact conformation, small volume are solved
The problem of general high-precision relative gravity instrument volume of having determined is larger.
A kind of high-precision relative gravity instrument of Mainspring type spring of the present invention, for measuring relative gravity, including：Mainspring type bullet
Spring (1), spring support (10), spring adjusting knob (4), weight (2), upper bottom crown (3), up and down pole plate adjusting knob (5), pole
Board mount (7), up and down polar plate bracket base (8), up and down polar plate bracket adjusting knob (6) and gravimeter base (9), wherein, institute
State Mainspring type spring (1) to be fixed on the spring support (10) by the spring adjusting knob (4), adjusted and revolved by spring
Button (4) can surround clockwork spring central rotation, the other end of the Mainspring type spring (1) along one end counterclockwise for making clockwork spring (1)
It is fixedly connected on the weight (2)；
Upper bottom crown (3) spacing is fixed, by the pole plate adjusting knob (5) be fixed on above and below polar plate bracket (7),
And the upper pole plate adjusting knob (5) can the vertically upper bottom crown (3) of regulation above and below polar plate bracket；The upper bottom crown
Support (7) is fixed on the polar plate bracket base (8) up and down by the polar plate bracket knob (6) up and down, and pole up and down
Board mount knob (6) can vertically polar plate bracket (7) above and below polar plate bracket base (8) left and right adjusting.
Preferably, the Mainspring type spring (1) is rigid sheet structure.
Preferably, the spring adjusting knob (4), adjustable springs are rotated centered on knob, make weight (2) with up and down
Pole plate (3) keeping parallelism；Spring adjusting knob (4) has locking mechanism, and Mainspring type can be kept after spring adjusting knob (4) is locked
Spring (1) is stable.
Preferably, the pole plate adjusting knob (5), can vertically polar plate bracket (7) moves up and down tune to upper bottom crown (3)
Section, the center for making weight (2) be located between upper bottom crown；Pole plate adjusting knob (5) has locking mechanism, pole plate regulation rotation
Bottom crown (3) can be kept stable after button (5) is locked.
Preferably, the polar plate bracket adjusting knob (6) up and down, can be to upper bottom crown (3) vertically polar plate bracket base
(8) regulation is moved left and right, the center for making weight (2) be located between upper bottom crown；Polar plate bracket adjusting knob (6) has up and down
Have locking mechanism, can be kept after polar plate bracket adjusting knob (6) is locked up and down above and below polar plate bracket (7) it is stable.
Preferably, there is the first guide groove on the polar plate bracket (7) up and down, the pole plate adjusting knob (5) has first
Mobile member, by adjusting the knob of the pole plate adjusting knob (5), first mobile member can be in first guide groove
Inside move up and down.
Preferably, there is the second guide groove, the polar plate bracket adjusting knob up and down on the polar plate bracket base (8) up and down
(6) there is the second mobile member, pass through the knob of the regulation polar plate bracket adjusting knob (6) up and down, second movement
Component can be moved left and right in second guide groove.
Preferably, relative gravity instrument of the invention also includes detection circuit, the detection circuit and the upper bottom crown (3)
Connected by shielded cable, for detecting that the spacing between the weight (2) and the upper bottom crown (3) changes.
Preferably, the detection circuit is ratio bridge differential capacitive detection circuit.
The clockwork spring formula relative gravity instrument of the present invention, its clockwork spring structure causes the deformation of spring to surround clockwork spring center
Rotation, substantially reduces the space scale of camber of spring, and stretching 20cm or even longer effect can be reached in the space of very little；
Further, since the rigid sheet structure of clockwork spring, makes it higher in other directional stiffness, be conducive to the clamped of spring and guarantor
Shield.
Brief description of the drawings
Fig. 1 is the structural representation of the Mainspring type spring relative gravity instrument of the present invention.
Fig. 2 is ratio bridge differential capacitive detection circuit structural representation.
Symbol description：
1 Mainspring type spring；2 weights；Bottom crown on 3；4 spring adjusting knobs；5 pole plate adjusting knobs；
About 6 polar plate bracket adjusting knobs；About 7 polar plate brackets；About 8 polar plate bracket bases；
9 gravimeter bases；10 spring supports
Embodiment
Below by embodiment, the invention will be further described, and its purpose is only that the research for more fully understanding the present invention
The protection domain that content is not intended to limit the present invention.
As shown in figure 1, the Mainspring type spring relative gravity instrument of the present invention, for relative gravity measurement.The device includes：Hair
Bar formula spring 1, spring support 10, spring adjusting knob 4, weight 2, upper bottom crown 3, up and down pole plate adjusting knob 5, polar plate bracket
7th, polar plate bracket base 8, up and down polar plate bracket adjusting knob 6 and gravimeter base 9 up and down.The following detailed description of individual each composition portion
Annexation between part.
Mainspring type spring 1 is fixed on spring support 10 by spring adjusting knob 4, by spring adjusting knob 4, can be suitable
One end of clockwork spring 1 is set to surround clockwork spring central rotation counterclockwise, the other end of the Mainspring type spring 1 is fixedly connected on described
Weight 2.Above-mentioned Mainspring type spring 1, it, which is deformed, surrounds clockwork spring central rotation, substantially reduces the space scale of camber of spring, can
Stretching 20cm or even longer effect are reached in the space of very little.In addition, above-mentioned Mainspring type spring 1 is rigid sheet structure,
Make it higher in other directional stiffness, be conducive to the clamped of spring and protection.Due to the rigid sheet structure of Mainspring type spring 1,
So that the cantilever beam of the outer end (free end) being connected with weight 2 equivalent to one, can support weight 2.Pass through spring adjusting knob
4, adjustable springs are rotated centered on knob, make weight 2 and the upper keeping parallelism of bottom crown 3.Spring adjusting knob 4 also has lock
Deadlock structure, can ensure the stabilization of Mainspring type spring 1 after spring adjusting knob 4 is locked.
The spacing of upper bottom crown 3 is fixed, by pole plate adjusting knob 5 be fixed on above and below 7 on polar plate bracket；Upper bottom crown
Support 7 by polar plate bracket adjusting knob 6 up and down be fixed on above and below on polar plate bracket base 8.Pole plate adjusting knob 5 can be vertically
Polar plate bracket adjusts bottom crown 3 about 7, the center for making weight 2 be located between upper bottom crown.Pole plate adjusting knob 5 is locked
The upper stabilization of bottom crown 3 can after death be ensured.Polar plate bracket adjusting knob 6 can be vertically in the left and right adjusting of polar plate bracket base 8 up and down
Bottom crown support 7, the center for making weight 2 be located between upper bottom crown；Polar plate bracket adjusting knob 6 also has locked up and down
Mechanism, after polar plate bracket adjusting knob 6 is locked up and down can up and down the stabilization of polar plate bracket 7.
Specifically, there is the first guide groove on the polar plate bracket 7 up and down, the pole plate adjusting knob 5 has the first movement
Component, by adjusting the knob of the pole plate adjusting knob 5, first mobile member can be in first guide groove above and below
It is mobile.There is the second guide groove, the polar plate bracket adjusting knob 6 up and down has second to move on the polar plate bracket base 8 up and down
Dynamic component, by the knob of the regulation polar plate bracket adjusting knob 6 up and down, second mobile member can be described second
Moved left and right in guide groove.Here mobile member can be movable pulley, may be such that movable pulley is moved in guide groove by knob.Compared with
Goodly, guide groove can be designed as having the dentalation matched each other respectively with movable pulley.
The following detailed description of the course of work of the clockwork spring formula relative gravity instrument of the present invention.Weight 2 is fixed on clockwork spring bullet
The outer end of spring 1, weight 2 is sagging under gravity, clockwork spring 1 is deformed around central rotation；Spring adjusting knob 4 is adjusted,
Along making clockwork spring 1 surround clockwork spring central rotation counterclockwise, weight is set to be in 2 horizontal cross postures；Adjust pole plate adjusting knob 5
Polar plate bracket knob 6 up and down, the upper bottom crown 3 that moves up and down is so that weight 2 is located at the centre bit between upper bottom crown 3
Put.So, upper bottom crown 3 and weight 2 are formed a differential capacitor, and weight 2 is moved up and down with Gravity changer, i.e. weight 2
Spacing with upper bottom crown just can accurately measure the change of gravity using the differential measuring principle of electric capacity, that is, realize with Gravity changer
Relative gravity measurement.The data that the spacing of weight 2 and upper bottom crown changes can be obtained by conventional measurement means or mode,
Such as capacitance detection A/D chip, fixed inductance bridge differential capacitance detecting etc., ratio bridge differential capacitive detection circuit etc..This
One embodiment of invention is that the spacing between weight and upper bottom crown is detected by ratio bridge differential capacitive detection circuit
Change.
Fig. 2 is ratio bridge differential capacitive detection circuit structural representation.Detection circuit passes through shielded cable and gravimeter
Pole plate is connected.Gravimeter weight and upper bottom crown are shown, weight is located in the middle of upper bottom crown, and becomes in gravity in the dotted line frame of right side
Under change effect, move up and down.From gravimeter structure, upper bottom crown spacing is fixed, i.e. d1+d2=constants.So, weight with
Upper bottom crown just constitutes differential capacitor, i.e. C1/C2=d1/d2。
The left structure for surveying dotted line frame for detection circuit, the detection circuit is demodulated by ac-excited, ratio transformer and signal
Amplification, phase sensitive detection, low-pass filter circuit are constituted.Ac-excited, ratio transformer and differential capacitor, that is, constitute the inspection of gravimeter
The ratio AC bridge of slowdown monitoring circuit.Ratio transformer is equivalent to arrow in the inductance coil of 100,000 circles, figure and represents that hub of a spool is taken out
Head, N1 and N2 represent the coil turn on tap both sides, and coil total number of turns is fixed, N1+N2=constants.The ratio arm in detection circuit
Centre cap is grounded, therefore the bridge other end, and the voltage of weight over the ground is bridge unbalance voltage, by preposition amplification, solution
The modulating and demodulating signal final output DC simulation voltages such as amplification, phase sensitive detection, LPF are adjusted, so as to realize that relative gravity is surveyed
Amount.
Obviously, those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to explanation originally
Invention, and be not used as limitation of the invention, as long as in the spirit of the present invention, to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (9)
1. a kind of Mainspring type spring relative gravity instrument, for measuring relative gravity, it is characterised in that including：Mainspring type spring
(1), spring support (10), spring adjusting knob (4), weight (2), upper bottom crown (3), pole plate adjusting knob (5), upper bottom crown
Support (7), up and down polar plate bracket base (8), up and down polar plate bracket adjusting knob (6) and gravimeter base (9), wherein,
The Mainspring type spring (1) is fixed on the spring support (10) by the spring adjusting knob (4), passes through spring
Adjusting knob (4) can surround clockwork spring central rotation along one end counterclockwise for making clockwork spring (1), the Mainspring type spring (1)
The other end is fixedly connected on the weight (2)；
Upper bottom crown (3) spacing is fixed, by the pole plate adjusting knob (5) be fixed on above and below polar plate bracket (7), and
The upper pole plate adjusting knob (5) can the vertically upper bottom crown (3) of regulation above and below polar plate bracket；The polar plate bracket up and down
(7) it is fixed on by the polar plate bracket knob (6) up and down on the polar plate bracket base (8) up and down, and upper bottom crown branch
Frame knob (6) can vertically polar plate bracket (7) above and below polar plate bracket base (8) left and right adjusting.
2. Mainspring type spring relative gravity instrument according to claim 1, it is characterised in that the Mainspring type spring (1) is
Rigid sheet structure.
3. Mainspring type spring relative gravity instrument according to claim 1, it is characterised in that the spring adjusting knob (4),
Adjustable springs are rotated centered on knob, make weight (2) and upper bottom crown (3) keeping parallelism；Spring adjusting knob (4) has
Locking mechanism, can keep Mainspring type spring (1) stable after spring adjusting knob (4) is locked.
4. the high-precision relative gravity instrument of Mainspring type spring according to claim 1, it is characterised in that the pole plate regulation rotation
Button (5), can to upper bottom crown (3), vertically polar plate bracket (7) moves up and down regulation, make weight (2) be located at upper bottom crown between
Center；Pole plate adjusting knob (5) has locking mechanism, and bottom crown (3) can be kept after pole plate adjusting knob (5) is locked
It is stable.
5. Mainspring type spring relative gravity instrument according to claim 1, it is characterised in that the polar plate bracket regulation up and down
Knob (6), can to upper bottom crown (3), vertically polar plate bracket base (8) moves left and right regulation, weight (2) is located at pole up and down
Center between plate；Polar plate bracket adjusting knob (6) has locking mechanism up and down, up and down polar plate bracket adjusting knob (6)
Polar plate bracket (7) is stable above and below being kept after locked.
6. Mainspring type spring relative gravity instrument according to claim 1, it is characterised in that the polar plate bracket (7) up and down
Upper to have the first guide groove, the pole plate adjusting knob (5) has the first mobile member, by adjusting the pole plate adjusting knob
(5) knob, first mobile member can be moved up and down in first guide groove.
7. Mainspring type spring relative gravity instrument according to claim 1, it is characterised in that the polar plate bracket base up and down
(8) there is the second guide groove, the polar plate bracket adjusting knob (6) up and down has the second mobile member, by adjusting on described on
The knob of bottom crown bracket adjustment knob (6), second mobile member can be moved left and right in second guide groove.
8. Mainspring type spring relative gravity instrument according to claim 1, it is characterised in that described also including detection circuit
Detection circuit is connected with the upper bottom crown (3) by shielded cable, for detecting the weight (2) and the upper bottom crown
(3) the spacing change between.
9. Mainspring type spring relative gravity instrument according to claim 8, it is characterised in that the detection circuit is ratio electricity
Bridge differential capacitor detects circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145560.XA CN107065026B (en) | 2017-03-13 | 2017-03-13 | Clockwork spring relative gravity appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145560.XA CN107065026B (en) | 2017-03-13 | 2017-03-13 | Clockwork spring relative gravity appearance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107065026A true CN107065026A (en) | 2017-08-18 |
| CN107065026B CN107065026B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710145560.XA Active CN107065026B (en) | 2017-03-13 | 2017-03-13 | Clockwork spring relative gravity appearance |
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| CN (1) | CN107065026B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895353A (en) * | 2019-12-19 | 2020-03-20 | 北京奥地探测仪器有限公司 | Gravity sensor and electronic gravimeter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU88547A1 (en) * | 1950-01-27 | 1950-11-30 | Н.В. Самарский | Spring gravimeter |
| CN1278067A (en) * | 1999-10-28 | 2000-12-27 | 中国地震局地震研究所 | High precision gravimeter |
| DE102005016218A1 (en) * | 2005-04-07 | 2006-10-19 | Tropf, Hermann | Force measurement arrangement, has helical spring effecting rotary movement around loading direction and including two coil springs or spiral springs mounted onto one another, where spring wires are connected by connecting unit |
| CN101201411A (en) * | 2007-10-30 | 2008-06-18 | 中国地震局地震研究所 | Down-hole all-directional tidal observation system |
| CN202904037U (en) * | 2012-06-06 | 2013-04-24 | 郑州晶微电子科技有限公司 | A gravimeter structure |
| CN105259592A (en) * | 2015-11-11 | 2016-01-20 | 中国科学院测量与地球物理研究所 | High-precision zero-length spring temperature drift and long-term creep deformation detector |
| CN206594315U (en) * | 2017-03-13 | 2017-10-27 | 中国地震局地壳应力研究所 | A kind of Mainspring type spring relative gravity instrument |
-
2017
- 2017-03-13 CN CN201710145560.XA patent/CN107065026B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU88547A1 (en) * | 1950-01-27 | 1950-11-30 | Н.В. Самарский | Spring gravimeter |
| CN1278067A (en) * | 1999-10-28 | 2000-12-27 | 中国地震局地震研究所 | High precision gravimeter |
| DE102005016218A1 (en) * | 2005-04-07 | 2006-10-19 | Tropf, Hermann | Force measurement arrangement, has helical spring effecting rotary movement around loading direction and including two coil springs or spiral springs mounted onto one another, where spring wires are connected by connecting unit |
| CN101201411A (en) * | 2007-10-30 | 2008-06-18 | 中国地震局地震研究所 | Down-hole all-directional tidal observation system |
| CN202904037U (en) * | 2012-06-06 | 2013-04-24 | 郑州晶微电子科技有限公司 | A gravimeter structure |
| CN105259592A (en) * | 2015-11-11 | 2016-01-20 | 中国科学院测量与地球物理研究所 | High-precision zero-length spring temperature drift and long-term creep deformation detector |
| CN206594315U (en) * | 2017-03-13 | 2017-10-27 | 中国地震局地壳应力研究所 | A kind of Mainspring type spring relative gravity instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895353A (en) * | 2019-12-19 | 2020-03-20 | 北京奥地探测仪器有限公司 | Gravity sensor and electronic gravimeter |
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| Publication number | Publication date |
|---|---|
| CN107065026B (en) | 2023-09-26 |
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Address after: 100085, Anning Road, Haidian District, Beijing, 1, Xisanqi Applicant after: National natural disaster prevention and Control Research Institute Ministry of emergency management Address before: 100085, Anning Road, Haidian District, Beijing, 1, Xisanqi Applicant before: THE INSTITUTE OF CRUSTAL DYNAMICS, CHINA EARTHQUAKE ADMINISTRATION |
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