CN201984166U - Falling body prism release device for free falling body type gravity meter - Google Patents
Falling body prism release device for free falling body type gravity meter Download PDFInfo
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- CN201984166U CN201984166U CN2010206922895U CN201020692289U CN201984166U CN 201984166 U CN201984166 U CN 201984166U CN 2010206922895 U CN2010206922895 U CN 2010206922895U CN 201020692289 U CN201020692289 U CN 201020692289U CN 201984166 U CN201984166 U CN 201984166U
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- ball
- concave spherical
- falling body
- prism
- via hole
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- Expired - Fee Related
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Abstract
The utility model discloses a falling body prism release device for a free falling body type gravity meter, and relates to a gravity survey device. The device comprises a vacuum chamber (1), a lower bracket board (2), a linear motor (3), a cantilever (4), an upper bracket board (5), a concave spherical groove (6), a ball (7), a via hole (8), a hanging rod (9), a falling body prism (10), a guide rod (11) and a viewing window lens (12), wherein the concave spherical groove is formed on the upper surface of the cantilever; the via hole is formed at the center at the bottom of the concave spherical groove; the hanging rod penetrates the via hole; the upper end of the hanging rod is connected with the ball; the falling body prism is hanged at the lower end of the hanging rod; the ball can move freely in the concave spherical groove; and the falling body prism is connected with the guide rod in a sliding manner. The falling body prism release device is hung and released through adopting the concave spherical groove and the ball, has excellent anti-fatigue performance, is durable, and has excellent verticality when the falling body prism is released, and is beneficial for high-precision gravity surveying.
Description
Technical field
The utility model relates to the gravimetry device, especially relates to a kind of free fall type gravity meter falling bodies prism releasing means.
Background technology
Free fall type gravity meter (the free fall type gravity meter is commonly referred to as classical absolute gravimeter) be at present in the world development be used for directly measuring the main precision measuring instrument of gravity acceleration value, its ultimate principle is to utilize Michelson laser interferometer method Measuring Object (measuring the falling bodies prism) is experienced in the vertical direction free movement under high vacuum condition time and distance, calculates gravity value according to Newton second law.It is the importance that influences its measuring accuracy that the falling bodies prism is stablized releasing means.One utility model patent (patent No. ZL 200720086464.4) has been announced a kind of free fall type gravity meter falling body quality falling apparatus, the scheme of this patent is: free fall type gravity meter falling bodies prism is clamped by collet by solenoid valve or is discharged, its weak point is: the long-term use, the easy elastic fatigue of collet, folder power symmetry reduces, cause the falling bodies prism can not discharge or discharge not steady, (alleged among the patent No. ZL 200720086464.4 " falling body quality " the utility model is called " falling bodies prism ", and " falling bodies prism " is more readily understood).
Summary of the invention
The purpose of this utility model is that a kind of free fall type gravity meter falling bodies prism releasing means is provided.This device adopts concave spherical surface groove to hang with ball to discharge, and fatigue resistance is good, and is durable in use, and the falling bodies prism when discharging vertical property good, useful to the high-precision gravity measurement.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of free fall type gravity meter falling bodies prism releasing means is by vacuum chamber, the lower carriage plate, linear electric motors, cantilever, the upper bracket plate, the concave spherical surface groove, ball, via hole, peg, the falling bodies prism, guide rod and perspective window mirror are formed, vacuum chamber links to each other with the lower carriage plate, the lower carriage plate links to each other with perspective window mirror thoroughly, linear electric motors lower end and lower carriage plate with link to each other, linear electric motors upper ends and upper bracket plate with link to each other, linear electric motors link to each other with cantilever, the cantilever upper surface has the concave spherical surface groove, concave spherical surface trench bottom center has via hole, peg passes via hole, the peg upper end links to each other with ball, and the falling bodies prism hangs on the peg lower end.Via diameter is less than bulb diameter, and via diameter and peg diameter are complementary.Concave spherical surface groove radius-of-curvature and ball 7 radius-of-curvature are complementary, and ball can be free movable in the concave spherical surface groove.Falling bodies prism and guide rod are slidingly connected, and guide rod links to each other with the upper bracket plate with the lower carriage plate.
Linear electric motors move up and down and drive cantilever and move up and down, and the concave spherical surface groove of cantilever by its upper surface holds up ball 7 and move up and down along guide rod, and it is a whole vertical motion that ball 7 connects the falling bodies prism by peg.When cantilever move to guide rod upper end static after, ball contacts with the concave spherical surface groove, it is that an integral body also keeps transfixion that ball connects the falling bodies prism by peg, under action of gravity, it is the centre of sphere that holistic center of gravity line passes ball that ball 7 connects the falling bodies prism by peg, be to be slidingly connected between concave spherical surface groove and the ball, the horizontal tilt of cantilever at this moment can not have influence on the vertical suspension of falling bodies prism.When needs falling bodies prism fell, linear motor accelerated motion made the concave spherical surface groove separate with ball, and it is a whole free-falling that ball connects the falling bodies prism by peg.After linear electric motors moved to the guide rod bottom, when linear electric motors decelerate to staticly, ball 7 contacted with the concave spherical surface groove, and ball connects the falling bodies prism by peg and also decelerates to staticly, and then linear electric motors slowly move to the guide rod upper end again, and one time the falling bodies task is finished.Whole falling bodies prism falling apparatus is placed in the pressurized capsule, and Laser Measurement can shine on the falling bodies prism by perspective window mirror, and through transmitting for gathering from perspective window mirror behind the falling bodies prismatic reflection.
The utility model has the advantages that: this falling bodies prism releasing means adopts concave spherical surface groove to hang with ball to discharge, and fatigue resistance is good, and is durable in use, and the falling bodies prism when discharging vertical property good, useful to the high-precision gravity measurement.
Description of drawings
Accompanying drawing 1 is a free fall type gravity meter falling bodies prism releasing means structural representation.
Wherein: 1-vacuum chamber, 2-lower carriage plate, 3-linear electric motors, 4-cantilever, 5-upper bracket plate, 6-concave spherical surface groove, 7-ball, 8-via hole, 9-peg, 10-falling bodies prism, 11-guide rod, 12-perspective window mirror.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of free fall type gravity meter falling bodies prism releasing means is by vacuum chamber 1, lower carriage plate 2, linear electric motors 3, cantilever 4, upper bracket plate 5, concave spherical surface groove 6, ball 7, via hole 8, peg 9, falling bodies prism 10, guide rod 11 and perspective window mirror 12 are formed, vacuum chamber 1 links to each other with lower carriage plate 2, lower carriage plate 2 links to each other with perspective window mirror 12 thoroughly, linear electric motors 3 lower ends and lower carriage plate 2 with link to each other, linear electric motors 3 upper ends and upper bracket plate 5 with link to each other, linear electric motors 3 link to each other with cantilever 4, cantilever 4 upper surfaces have concave spherical surface groove 6, concave spherical surface groove 6 bottom centre have via hole 8, peg 9 passes via hole 8, peg 9 upper ends link to each other with ball 7, and falling bodies prism 10 hangs on peg 9 lower ends.Via hole 8 diameters are less than ball 7 diameters, and via hole 8 diameters and peg 9 diameters are complementary.Concave spherical surface groove 6 radius-of-curvature and ball 7 radius-of-curvature are complementary, and ball 7 can be free movable in concave spherical surface groove 6.Falling bodies prism 10 is slidingly connected with guide rod 11, and guide rod 11 links to each other with upper bracket plate 5 with lower carriage plate 2.
Linear electric motors 3 move up and down and drive cantilever 4 and move up and down, and the concave spherical surface groove 6 of cantilever 4 by its upper surface holds up balls 7 and move up and down along guide rod 11, and it is a whole vertical motion that ball 7 connects falling bodies prisms 10 by peg 9.When cantilever 4 move to guide rod 11 upper ends static after, ball 7 contacts with concave spherical surface groove 6, it is that an integral body also keeps transfixion that ball 7 connects falling bodies prism 10 by peg 9, under action of gravity, ball 7 connects falling bodies prism 10 passes ball 7 for holistic center of gravity line the centre of sphere by peg 9, between concave spherical surface groove 6 and the ball 7 is to be slidingly connected, and the horizontal tilt of cantilever 4 at this moment can not have influence on the vertical suspension of falling bodies prism.When needs falling bodies prism 10 fell, linear electric motors 3 accelerated motions made concave spherical surface groove 6 separate with ball 7, and it is a whole free-falling that ball 7 connects falling bodies prism 10 by peg 9.After linear electric motors 3 move to guide rod 11 bottoms, when linear electric motors 3 decelerate to staticly, ball 7 contacts with concave spherical surface groove 6, and ball 7 connects falling bodies prisms 10 by peg 9 and also decelerates to static, then linear electric motors 3 slowly move to guide rod 11 upper ends again, and one time the falling bodies task is finished.Whole falling bodies prism falling apparatus is placed in the pressurized capsule 1, and Laser Measurement can shine on the falling bodies prism 10 by perspective window mirror 12, and transmits for gathering from perspective window mirror 12 through falling bodies prism 10 reflection backs.
Claims (1)
1. free fall type gravity meter falling bodies prism releasing means, it is characterized in that this device is made up of vacuum chamber (1), lower carriage plate (2), linear electric motors (3), cantilever (4), upper bracket plate (5), concave spherical surface groove (6), ball (7), via hole (8), peg (9), falling bodies prism (10), guide rod (11) and perspective window mirror (12); Vacuum chamber (1) links to each other with lower carriage plate (2), lower carriage plate (2) links to each other with perspective window mirror (12) thoroughly, linear electric motors (3) lower end and lower carriage plate (2) with link to each other, linear electric motors (3) upper ends and upper bracket plate (5) with link to each other, linear electric motors (3) link to each other with cantilever (4), cantilever (4) upper surface has concave spherical surface groove (6), concave spherical surface groove (6) bottom centre has via hole (8), peg (9) passes via hole (8), peg (9) upper end links to each other with ball (7), falling bodies prism (10) hangs on peg (9) lower end, via hole (8) diameter is less than ball (7) diameter, via hole (8) diameter and peg (9) diameter are complementary, concave spherical surface groove (6) radius-of-curvature and ball (7) radius-of-curvature are complementary, ball (7) can be free movable in concave spherical surface groove (6), and falling bodies prism (10) is slidingly connected with guide rod (11), and guide rod (11) links to each other with upper bracket plate (5) with lower carriage plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206922895U CN201984166U (en) | 2010-12-31 | 2010-12-31 | Falling body prism release device for free falling body type gravity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206922895U CN201984166U (en) | 2010-12-31 | 2010-12-31 | Falling body prism release device for free falling body type gravity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201984166U true CN201984166U (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206922895U Expired - Fee Related CN201984166U (en) | 2010-12-31 | 2010-12-31 | Falling body prism release device for free falling body type gravity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201984166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169191A (en) * | 2010-12-31 | 2011-08-31 | 中国科学院测量与地球物理研究所 | Releasing device of falling prism of free falling gravimeter |
-
2010
- 2010-12-31 CN CN2010206922895U patent/CN201984166U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169191A (en) * | 2010-12-31 | 2011-08-31 | 中国科学院测量与地球物理研究所 | Releasing device of falling prism of free falling gravimeter |
| CN102169191B (en) * | 2010-12-31 | 2012-12-26 | 中国科学院测量与地球物理研究所 | Releasing device of falling prism of free falling gravimeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20111231 |