CN102116874B - Device for releasing falling body prism of absolute gravimeter - Google Patents
Device for releasing falling body prism of absolute gravimeter Download PDFInfo
- Publication number
- CN102116874B CN102116874B CN2009102734672A CN200910273467A CN102116874B CN 102116874 B CN102116874 B CN 102116874B CN 2009102734672 A CN2009102734672 A CN 2009102734672A CN 200910273467 A CN200910273467 A CN 200910273467A CN 102116874 B CN102116874 B CN 102116874B
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- steel ball
- spring
- electromagnet
- prism
- locking chamber
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Abstract
The invention discloses a device for releasing a falling body prism of an absolute gravimeter, comprising a vacuum cabin, a lower bracket plate, a linear motor, an upper bracket plate, a latch chamber, an electromagnet, a spring, a steel ball, a hanging nail, the falling body prism, a guide rod, a buffer spring, a support vehicle and a perspective window mirror, wherein the electromagnet and the spring are contained in the latch chamber; the steel ball is arranged at the inner bottom of the latch chamber; the bottom of the latch chamber is a concave slope and an opening is arranged in the middle of the bottom of the latch chamber; the spring is clamped between the electromagnet and the steel ball; and the steel ball is in contact with the bottom of the latch chamber. The latch chamber, the spring, the steel ball and the electromagnets are used as clamps so as to play roles of clamping and releasing the falling body prism of the gravimeter; and the device is good in anti-fatigue characteristic, stable and rapid in releasing, durable, free of great interference of mechanical movement in the falling process of the falling body prism and beneficial to the high-precision gravity measurement.
Description
Technical field
The present invention relates to measurement mechanism, especially relate to a kind of free fall type device for releasing falling body prism of absolute gravimeter.
Background technology
The free fall type absolute gravimeter is the device of measuring the free acceleration of gravity of falling bodies prism under vacuum state, and falling bodies prism Stable Release device is the importance that affects its measuring accuracy.One utility model patent (patent No. ZL 200720086464.4) has been announced a kind of absolute gravimeter falling body quality falling apparatus, the scheme of this patent is: absolute gravimeter falling bodies prism is clamped by collet or is discharged by solenoid valve, its weak point is: the long-term use, the easy elastic fatigue of collet, folder power is symmetrical to be reduced, and causes the falling bodies prism can not discharge or discharge not steady.(alleged in patent No. ZL 200720086464.4 " falling body quality " the present invention is called " falling bodies prism ", and " falling bodies prism " is more readily understood).
Summary of the invention
In order to overcome above-mentioned deficiency, the invention provides a kind of device for releasing falling body prism of absolute gravimeter.
The technical solution adopted for the present invention to solve the technical problems is: a kind of device for releasing falling body prism of absolute gravimeter, a kind of device for releasing falling body prism of absolute gravimeter is by vacuum chamber, the lower carriage plate, linear electric motors, the upper bracket plate, locking chamber, electromagnet, spring, steel ball, clothes-hook, the falling bodies prism, guide rod, buffer spring, motorcycle, the window mirror forms, vacuum chamber is connected with the lower carriage plate, the lower carriage plate is connected with the form mirror thoroughly, linear electric motors lower end and lower carriage plate be connected, linear electric motors upper end and upper bracket plate be connected, linear electric motors are connected with motorcycle, motorcycle is connected with buffer spring, the upper bracket plate is connected with electromagnet, the upper bracket plate is connected with locking chamber, electromagnet and spring are included in locking chamber, the locking chamber inner bottom part has individual steel ball, the locking chamber bottom is the face of concaving, the perforate of locking chamber bottom centre, opening diameter is greater than the clothes-hook diameter and is less than diameter of the steel ball, spring clamp is between electromagnet and individual steel ball, steel ball contacts with the locking chamber inner bottom part.Falling bodies prism and guide rod are slidably connected, and the falling bodies prism is connected with clothes-hook, and guide rod is connected with the upper bracket plate with the lower carriage plate.
Linear electric motors move up and down and drive motorcycle and move up and down, and motorcycle holds up the falling bodies prism by buffer spring and moves up and down along guide rod.When the falling bodies prism is held in the palm top, clothes-hook on the falling bodies prism just can be entered into locking chamber inside and contact with 4 steel balls by the hole of locking chamber bottom, locking chamber bottom concave face by the pressure-acting of the suffered spring of individual steel ball to clothes-hook, and under the effect of the face that concaves bottom locking chamber, pressure is amplified, and the falling bodies prism that makes clothes-hook and connection thereof can be below removing under the friction force effect of steel ball and clothes-hook be suspended on the upper end of guide rod under the anchorage force effect of buffer spring and motorcycle.Clothes-hook adopts nonmetallic materials to make, and not affected by magnetic force.When needs falling bodies prism falls, linear electric motors first move to the guide rod bottom, then to electromagnet, switch on, steel ball is at the magnetic attraction lower compression spring of electromagnet, and steel ball leaves the locking chamber bottom face that concaves, and steel ball disappears to the pressure of clothes-hook, friction force disappears, clothes-hook and falling bodies prism fall and are accepted by the buffer spring that first moves to lower end of the guide rod and motorcycle under Action of Gravity Field, the electromagnet outage, and one time the falling bodies task completes.Whole falling bodies prism falling apparatus is placed in a pressurized capsule, and laser can shine on the falling bodies prism by the window mirror, and from the window mirror, transmits for gathering after the falling bodies prismatic reflection.
The invention has the beneficial effects as follows: this falling bodies prism releasing means adopts locking chamber, spring, steel ball and electromagnet as fixture, fatigue resistance is good, discharge steadily rapidly, durable in use, and there is no significantly mechanical part motion artifacts in falling bodies prism dropping process, useful to High-Precision Gravimeter Survey.
The accompanying drawing explanation
Fig. 1 is the device for releasing falling body prism of absolute gravimeter structural representation.
Wherein: 1-vacuum chamber, 2-lower carriage plate, 3-linear electric motors, 4-upper bracket plate, 5-locking chamber, 6-electromagnet, 7-spring, 8-steel ball, 9-clothes-hook, 10-falling bodies prism, 11-guide rod, 12-buffer spring, 13-motorcycle, 14-window mirror.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Known according to Fig. 1, a kind of device for releasing falling body prism of absolute gravimeter is by vacuum chamber 1, lower carriage plate 2, linear electric motors 3, upper bracket plate 4, locking chamber 5, electromagnet 6, spring 7, steel ball 8, clothes-hook 9, falling bodies prism 10, guide rod 11, buffer spring 12, motorcycle 13, window mirror 14 forms, vacuum chamber 1 is connected with lower carriage plate 2, lower carriage plate 2 is connected with form mirror 14 thoroughly, linear electric motors 3 lower ends and lower carriage plate 2 be connected, linear electric motors 3 upper ends and upper bracket plate 4 be connected, linear electric motors 3 are connected with motorcycle 13, motorcycle 13 is connected with buffer spring 12, upper bracket plate 4 is connected with electromagnet 6, upper bracket plate 4 is connected with locking chamber 5, electromagnet 6 and spring 7 are included in locking chamber 5, locking chamber 5 inner bottom parts have 4 steel balls 8, locking chamber 5 bottoms are the face of concaving, the perforate of locking chamber 5 bottom centre, opening diameter is greater than 9-clothes-hook diameter and is less than steel ball 8 diameters, spring 7 is clipped between electromagnet 6 and 4 steel balls 8, steel ball 8 contacts with locking chamber 5 inner bottom parts.Falling bodies prism 10 is slidably connected with guide rod 11, and falling bodies prism 10 is connected with clothes-hook 9, and guide rod 11 is connected with upper bracket plate 4 with lower carriage plate 2.
Linear electric motors 3 move up and down and drive motorcycle 13 and move up and down, and motorcycle 13 holds up falling bodies prisms 10 by buffer spring 12 and moves up and down along guide rod 11.When falling bodies prism 10 is arrived top by holder, clothes-hook 9 on falling bodies prism 10 just can be entered into by the hole of locking chamber 5 bottoms locking chamber 5 inside and contact with 4 steel balls 8, locking chamber 5 bottoms concave face by the pressure-acting of 4 suffered springs 7 of steel ball to clothes-hook 9, and under locking chamber 5 bottoms concave the effect of face, pressure is amplified, make clothes-hook 9 and the falling bodies prism 10 that connects can be below removing under the friction force effect of steel ball 8 and clothes-hook 9 be suspended on the upper end of guide rod 11 under the anchorage force effect of buffer spring 12 and motorcycle 13.Clothes-hook 9 adopts nonmetallic materials to make, and not affected by magnetic force.When needs falling bodies prism 10 falls, linear electric motors 3 first move to guide rod 11 bottoms, then give electromagnet 6 energisings, steel ball 8 is at the magnetic attraction lower compression spring 7 of electromagnet 6, and steel ball 8 leaves the locking chamber 5 bottoms face that concaves, and the pressure of 8 pairs of clothes-hooks 9 of steel ball disappears, friction force disappears, clothes-hook 9 and falling bodies prism 10 fall and are accepted by the buffer spring 12 that first moves to guide rod 11 lower ends and motorcycle 13 under Action of Gravity Field, electromagnet 6 outages, and one time the falling bodies task completes.Whole falling bodies prism falling apparatus is placed in a pressurized capsule 1, and laser can shine on falling bodies prism 6 by window mirror 9, and from window mirror 9, transmits for gathering after 6 reflections of falling bodies prism.
Claims (1)
1. a device for releasing falling body prism of absolute gravimeter, it comprises vacuum chamber (1), lower carriage plate (2), linear electric motors (3), upper bracket plate (4), locking chamber (5), electromagnet (6), spring (7), steel ball (8), clothes-hook (9), falling bodies prism (10), guide rod (11), buffer spring (12), motorcycle (13), window mirror (14), vacuum chamber (1) is connected with lower carriage plate (2), lower carriage plate (2) is connected with window mirror (14), linear electric motors (3) lower end is connected with lower carriage plate (2), linear electric motors (3) upper end is connected with upper bracket plate (4), linear electric motors (3) are connected with motorcycle (13), motorcycle (13) is connected with buffer spring (12), upper bracket plate (4) is connected with electromagnet (6), upper bracket plate (4) is connected with locking chamber (5), electromagnet (6) and spring (7) are included in locking chamber (5), locking chamber (5) inner bottom part has steel ball (8), locking chamber (5) inner bottom part is the face of concaving, the perforate of locking chamber (5) bottom centre, opening diameter is greater than clothes-hook (9) diameter and is less than steel ball (8) diameter, spring (7) is clipped between electromagnet (6) and 4 steel balls (8), steel ball (8) contacts with locking chamber (5) inner bottom part, falling bodies prism (10) is slidably connected with guide rod (11), falling bodies prism (10) is connected with clothes-hook (9), guide rod (11) is connected with upper bracket plate (4) with lower carriage plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102734672A CN102116874B (en) | 2009-12-31 | 2009-12-31 | Device for releasing falling body prism of absolute gravimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102734672A CN102116874B (en) | 2009-12-31 | 2009-12-31 | Device for releasing falling body prism of absolute gravimeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102116874A CN102116874A (en) | 2011-07-06 |
| CN102116874B true CN102116874B (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102734672A Expired - Fee Related CN102116874B (en) | 2009-12-31 | 2009-12-31 | Device for releasing falling body prism of absolute gravimeter |
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| CN (1) | CN102116874B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323624B (en) * | 2011-08-05 | 2014-06-25 | 清华大学 | Absolute gravity measuring system and measuring method as well as falling method of free-falling body |
| CN103278907A (en) * | 2013-05-28 | 2013-09-04 | 中国科学院光电技术研究所 | Axial unloading device for index mirror |
| CN103941301A (en) * | 2014-04-13 | 2014-07-23 | 浙江大学 | Catapulting type absolute gravimeter faller prism upward-throwing control device and gravity test method |
| CN106197675A (en) * | 2016-07-27 | 2016-12-07 | 牧原食品股份有限公司 | Sick pig supervising device based on infrared thermal imaging |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB725361A (en) * | 1953-04-10 | 1955-03-02 | Perkins F Ltd | Improvements in or relating to release mechanisms |
| EP0117004A1 (en) * | 1983-02-15 | 1984-08-29 | Holec Systemen En Componenten B.V. | Apparatus for moving an element between two end positions by means of an energy buffer and keeping said elemnt in said end positions |
| EP0761505A1 (en) * | 1995-08-14 | 1997-03-12 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Coupling for a deployable safety element in a vehicle, in particular a roll-over bar |
| JP2001304545A (en) * | 2000-04-21 | 2001-10-31 | Taisan Kogyo Kk | Hand-reset type seismic circuit breaker |
| CN2729034Y (en) * | 2004-10-19 | 2005-09-28 | 浙江大学 | Drop hammer lifting releasing mechanism |
| CN201066391Y (en) * | 2007-08-14 | 2008-05-28 | 中国科学院测量与地球物理研究所 | A falling body quality release device for absolute gravity |
| CN201359639Y (en) * | 2008-12-29 | 2009-12-09 | 池顺良 | Absolute gravimeter over vacuum transmission control falling body motion mechanism |
-
2009
- 2009-12-31 CN CN2009102734672A patent/CN102116874B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB725361A (en) * | 1953-04-10 | 1955-03-02 | Perkins F Ltd | Improvements in or relating to release mechanisms |
| EP0117004A1 (en) * | 1983-02-15 | 1984-08-29 | Holec Systemen En Componenten B.V. | Apparatus for moving an element between two end positions by means of an energy buffer and keeping said elemnt in said end positions |
| EP0761505A1 (en) * | 1995-08-14 | 1997-03-12 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Coupling for a deployable safety element in a vehicle, in particular a roll-over bar |
| JP2001304545A (en) * | 2000-04-21 | 2001-10-31 | Taisan Kogyo Kk | Hand-reset type seismic circuit breaker |
| CN2729034Y (en) * | 2004-10-19 | 2005-09-28 | 浙江大学 | Drop hammer lifting releasing mechanism |
| CN201066391Y (en) * | 2007-08-14 | 2008-05-28 | 中国科学院测量与地球物理研究所 | A falling body quality release device for absolute gravity |
| CN201359639Y (en) * | 2008-12-29 | 2009-12-09 | 池顺良 | Absolute gravimeter over vacuum transmission control falling body motion mechanism |
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| Publication number | Publication date |
|---|---|
| CN102116874A (en) | 2011-07-06 |
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