CN102386473A - Unfolding mechanism for ten arrayed connecting rods and with large contraction ratio - Google Patents
Unfolding mechanism for ten arrayed connecting rods and with large contraction ratio Download PDFInfo
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- CN102386473A CN102386473A CN201110377547XA CN201110377547A CN102386473A CN 102386473 A CN102386473 A CN 102386473A CN 201110377547X A CN201110377547X A CN 201110377547XA CN 201110377547 A CN201110377547 A CN 201110377547A CN 102386473 A CN102386473 A CN 102386473A
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Abstract
The invention discloses an unfolding mechanism for ten arrayed connecting rods and with large contraction ratio. The unfolding mechanism comprises a base frame rod, a driving spring, two skidding rods, four T-shaped connecting rods, and three common connecting rods, wherein the force of the driving spring acted on the skidding rods is used for driving and completing the unfolding process, so that the shortcomings in a parallelogram mechanism with telescopic rods arrayed therein that the driving force is large and the efficiency is low are overcome. When the unfolding mechanism reaches to the maximum angle, the driving spring props the skidding rods against a lug boss of the base frame rod and enables the skidding rods not to continuously skid, so that the connecting rods can be unfolded with the maximum angel. The mechanism is applied to a ring-shaped array combined mode, the base frame rod is arranged at the center of a circle when being combined, and the connecting rod mechanisms are radially unfolded from the center to the radius, so as to reach a larger unfolding area. In addition, the driving springs with different rigidity are replaced to adjust the unfolding time and meet the different requirements. The invention has stableness in unfolding, high driving efficiency, simplicity in processing, convenience in assembly, and adjustability in unfolding time.
Description
Technical field
The present invention relates to a kind of connecting rod development mechanism with big shrinkage ratio.
Background technology
The shrinkage ratio size of satellite antenna development system is the good and bad important indicators of more various satellite antenna development mechanism performances.The development system that is used for satellite antenna at present, mainly the linkage array by a plurality of big shrinkage ratios forms, thereby realizes the function of synchronous and expansion.The big shrinkage ratio linkage of main flow is the parallelogram linkage that is driven by rope pulling expansion link; Need each mechanisms in series be got up to reach the purpose of launching simultaneously with rope upon deployment; But,, can't realize synchronous expansion efficiently because the pulling force that is provided of rope is limited; And whole process is big to the impact of system, directly influences the useful life and the work quality of satellite.
Summary of the invention
In order to overcome the deficiency of prior art; But the present invention provides a kind of big shrinkage ratio array connecting rod development agency, and it has improved type of drive, and the spring that is in compressive state by the starting stage drives; Not only avoided the excessive a series of influences that cause of actuating force, and whole expansion process is steady.In addition, it is simple, easy to assembly that the big shrinkage ratio linkage of the main flow course of processing has also been inherited by this mechanism, the advantage of light weight.
The technical solution adopted for the present invention to solve the technical problems is: comprise pedestal bar, driving spring, two slippage bars, four T shape connecting rods and three plain connecting rods.Described T shape connecting rod connects firmly by plain connecting rod with the connecting rod of its axis normal and forms, and three hinged places are arranged on the T shape connecting rod, and the special-shaped connecting rod of projection is arranged in the middle of can T shape connecting rod being regarded as.
Three hinged places are arranged on the pedestal bar; Hinged successively from top to bottom plain connecting rod one end, T shape connecting rod one end and No. two T shape connecting rod one ends; Pedestal club shaft between two T shape connecting rods is partly installed short slippage bar and long slippage bar, and its short-and-medium slippage bar is positioned at long slippage bar top, and driving spring is embedded in the middle of short slippage bar and the long slippage bar; Spring two contacts with two slippage bars respectively, and the starting stage spring is in compressive state.Short slippage bar and No. three T shape connecting rod one ends are hinged; No. three T shape connecting rod other ends and a T shape connecting rod stage casing are hinged; Long slippage bar and No. three plain connecting rod one ends are hinged; The other end of No. three plain connecting rods and No. three T shape connecting rod stage casings are hinged, and No. two T shape connecting rod other ends and plain connecting rod other end be an end and the stage casing of hinged No. four T shape connecting rods respectively, hinged No. two plain connecting rods between T shape connecting rod other end and No. two T shape connecting rod stage casings.
Three hinged places on the said pedestal bar are three vertical rods that stretch out the pedestal rod axis; Each vertical rod other end has a hinged place; The axis spacing of three vertical rods is respectively 50 and 780; Topmost length is that 85 vertical rod and length are that plain connecting rod one end of 2080 is hinged; Intermediate length is that 110 vertical rod and length are that a T shape connecting rod of 450 is hinged apart from an end of projection 350, and length is that 210 vertical rod and the length end that to be 2080 No. two T shape connecting rods far away apart from projection 1960 is hinged bottom.Short slippage pole length is 90, and long slippage pole length is 130, and short slippage bar and length are that 380 No. three T shape connecting rods are hinged apart from an end of projection 230, and long slippage bar and length are that 250 No. three plain connecting rod one ends are hinged.No. three plain connecting rod other ends and No. three T shape connecting rod protrusion length are that 45 hinged place is hinged, and T shape connecting rod protrusion length is that the other end of 30 hinged place and No. three T shape connecting rods is hinged, and the other end of a T shape connecting rod and No. two plain connecting rod one ends are hinged.No. two T shape connecting rods protrusion length is that hinged place and No. two plain connecting rod other ends of 55 are hinged; The other end of No. two T shape connecting rods and length are that 1000 No. four T shape connecting rods are hinged apart from an end of projection 830, and No. four T shape connecting rod protrusion length is that hinged place and a plain connecting rod other end of 125 are hinged.Above-mentioned length is proportionate relationship, is applicable to arbitrary unit.
By the length of connecting rod proportionate relationship of above-mentioned design, the shrinkage ratio that can draw when assembling the linkage work of accomplishing is about 1: 7, and can guarantee the operating characteristic in the array combination system.In addition, in application, can regulate shrinkage ratio according to actual conditions and each pole length of operational environment variation.
Described pedestal club shaft top is thick, the bottom is thin, and the boss that forms thus can only slide short slippage bar in limited range.
When normal the expansion, driving spring acts on two power on the slippage bar and makes the motion of slippage bar, and through each hinged connecting rod swing, thereby realize launching function.After mechanism reaches predetermined maximum start point, spring will be lacked the boss place of slippage masthead to the pedestal bar, can't continue motion, make mechanism remain on maximum start point.
Because satellite antenna carries out work under the state that whole system is launched fully, be principle in line with the simplicity of whole system structure, this linkage shrinks and needs to apply other external force at slippage bar place and accomplish.
This mechanism is applicable to the annular array compound mode, when combination, the pedestal bar is placed home position, and each linkage is launched along the radial direction radiant type by the center of circle, thereby reaches bigger developed area.
In addition, change the driving spring of different-stiffness and can adjust duration of run, to satisfy different demands.
The invention has the beneficial effects as follows: driven by the compression spring, expansion process impacts little, steady, and it is high to drive efficient; Change the spring different-stiffness, the adjustable mechanism duration of run; Adopt jointed connecting rod mechanism, processing is simple, and is easy to assembly; Connecting rod all adopts hollow-core construction, light weight.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Description of drawings
But Fig. 1 is the model sketch map of big shrinkage ratio array connecting rod development mechanism;
Fig. 2 is the partial view at pedestal bar boss place;
Model sketch map when Fig. 3 is mechanism's initial condition;
Model sketch map when Fig. 4 is the complete deployed condition of mechanism
Wherein: 1-pedestal bar, the short slippage bar of 2-, the long slippage bar of 3-, 4-driving spring, No. three plain connecting rods of 5-, a T type of 6-connecting rod, No. two T types of 7-connecting rod, No. three plain connecting rods of 8-, plain connecting rod of 9-, No. two plain connecting rods of 10-, No. four T shapes of 11-connecting rod.
Embodiment
As shown in Figure 1, but big shrinkage ratio array connecting rod development mechanism comprises 1 basic rod, 1 driving spring, 2 slippage bars, 4 T shape connecting rods, 3 plain connecting rods.Stretch out three vertical rods with the pedestal rod axis on the pedestal bar 1; Each quarter butt other end has a hinged place; Three's axis spacing is respectively 50mm and 780mm; Topmost length is that the vertical rod of 85mm and plain connecting rod 9 one ends that length is 2080mm are hinged; Intermediate length is that the vertical rod of 110mm and T shape connecting rod 6 that length is 450mm are hinged apart from the end of projection 350mm, and length is that the vertical rod of 210mm and T shape connecting rod 7 that length is 2080mm are hinged apart from the end of projection 1960mm bottom.Below pedestal bar 1 shank portion between two vertical rods from top to bottom respectively installation length be the short slippage bar 2 of 90mm and the long slippage bar 3 of 130mm; Driving spring 4 is embedded on the pedestal club shaft; Two ends contact with long slippage bar 3 with short slippage bar 2 respectively, and the starting stage spring is in compressive state.Short slippage bar 2 and length are that the T shape connecting rod 5 of 380mm is hinged apart from the end of projection 230mm, and long slippage bar 3 and length are that plain connecting rod 8 one ends of 250mm are hinged.Plain connecting rod 8 other ends and T shape connecting rod 5 protrusion length are that the hinged place of 45mm is hinged, and T shape connecting rod 6 protrusion length are that the other end of hinged place and T shape connecting rod 5 of 30mm is hinged, and its other end and length are that plain connecting rod 10 1 ends of 1680mm are hinged.T shape connecting rod 7 protrusion length are that the hinged place and plain connecting rod 10 other ends of 55mm are hinged, and its other end and length are that the T shape connecting rod 11 of 1000mm is hinged apart from the end of projection 830mm.T shape connecting rod protrusion length is that the hinged place and plain connecting rod 9 other ends of 125mm are hinged.
When normal the expansion; The power F that initial compressed driving spring 4 produces acts on the slippage bar 2,3; Make the distance of its move upward respectively x1, x2; Make T shape connecting rod 6 rotate counterclockwise the angle of α through driving 5,8 motions of hinged connecting rod, T shape connecting rod 6 makes T shape connecting rod 7 clockwise rotate the angle of β through drivening rod 10 motions, clockwise rotates motion through connecting rod 11 motion drivening rods 9 then and accomplishes expansion.After mechanism reached predetermined maximum start point, when promptly β was about to reach 90 °, spring can't continue the boss place (as accompanying drawing 2 shown in) of slippage masthead to basic rod to move upward, and makes mechanism remain on maximum start point.
Through the push and pull system after the circular array combination, the constituent parts linkage is launched along the radial direction radiant type by the center of circle, thereby obtains bigger developed area.
In addition, change the driving spring 4 of different-stiffness and can adjust duration of run, to satisfy different demands.
Claims (3)
1. but array ten bars of a big shrinkage ratio can be opened up unit mechanisms; Comprise pedestal bar, driving spring, two slippage bars, four T shape connecting rods and three plain connecting rods; It is characterized in that: described T shape connecting rod connects firmly by plain connecting rod with the connecting rod of its axis normal and forms, and three hinged places are arranged on the T shape connecting rod, and three hinged places are arranged on the pedestal bar; Hinged successively from top to bottom plain connecting rod one end, T shape connecting rod one end and No. two T shape connecting rod one ends; Pedestal club shaft between two T shape connecting rods is partly installed short slippage bar and long slippage bar, and its short-and-medium slippage bar is positioned at long slippage bar top, and driving spring is embedded in the middle of short slippage bar and the long slippage bar; Spring two contacts with two slippage bars respectively, and the starting stage spring is in compressive state; Short slippage bar and No. three T shape connecting rod one ends are hinged; No. three T shape connecting rod other ends and a T shape connecting rod stage casing are hinged; Long slippage bar and No. three plain connecting rod one ends are hinged; The other end of No. three plain connecting rods and No. three T shape connecting rod stage casings are hinged, and No. two T shape connecting rod other ends and plain connecting rod other end be an end and the stage casing of hinged No. four T shape connecting rods respectively, hinged No. two plain connecting rods between T shape connecting rod other end and No. two T shape connecting rod stage casings.
2. but array ten bars of big shrinkage ratio according to claim 1 can be opened up unit mechanisms; It is characterized in that: three hinged places on the said pedestal bar are three vertical rods that stretch out the pedestal rod axis; Each vertical rod other end has a hinged place; The axis spacing of three vertical rods is respectively 50 and 780; Topmost length is that 85 vertical rod and length are that plain connecting rod one end of 2080 is hinged, and intermediate length is that 110 vertical rod and length are that a T shape connecting rod of 450 is hinged apart from an end of projection 350, and length is that 210 vertical rod and the length end that to be 2080 No. two T shape connecting rods far away apart from projection 1960 is hinged bottom; Short slippage pole length is 90, and long slippage pole length is 130, and short slippage bar and length are that 380 No. three T shape connecting rods are hinged apart from an end of projection 230, and long slippage bar and length are that 250 No. three plain connecting rod one ends are hinged; No. three plain connecting rod other ends and No. three T shape connecting rod protrusion length are that 45 hinged place is hinged, and T shape connecting rod protrusion length is that the other end of 30 hinged place and No. three T shape connecting rods is hinged, and the other end of a T shape connecting rod and No. two plain connecting rod one ends are hinged; No. two T shape connecting rods protrusion length is that hinged place and No. two plain connecting rod other ends of 55 are hinged; The other end of No. two T shape connecting rods and length are that 1000 No. four T shape connecting rods are hinged apart from an end of projection 830, and No. four T shape connecting rod protrusion length is that hinged place and a plain connecting rod other end of 125 are hinged; Above-mentioned length is proportionate relationship.
3. but array ten bars of big shrinkage ratio according to claim 1 can be opened up unit mechanisms, it is characterized in that: described pedestal club shaft top is thick, the bottom is thin, and the boss that forms thus can only slide short slippage bar in limited range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110377547 CN102386473B (en) | 2011-11-24 | 2011-11-24 | Unfolding mechanism for ten arrayed connecting rods and with large contraction ratio |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110377547 CN102386473B (en) | 2011-11-24 | 2011-11-24 | Unfolding mechanism for ten arrayed connecting rods and with large contraction ratio |
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| CN102386473A true CN102386473A (en) | 2012-03-21 |
| CN102386473B CN102386473B (en) | 2013-08-28 |
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| CN 201110377547 Expired - Fee Related CN102386473B (en) | 2011-11-24 | 2011-11-24 | Unfolding mechanism for ten arrayed connecting rods and with large contraction ratio |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103107407A (en) * | 2013-01-21 | 2013-05-15 | 西北工业大学 | Annular series foldable mechanism configuration design method |
| CN103825098A (en) * | 2014-02-18 | 2014-05-28 | 哈尔滨工业大学深圳研究生院 | Framework type spatial foldable antenna unfolding mechanism |
| CN103840245A (en) * | 2012-11-23 | 2014-06-04 | 上海宇航系统工程研究所 | Planar unfoldable truss and stepwise unfolding method thereof |
| CN106486730A (en) * | 2015-08-26 | 2017-03-08 | 上海宇航系统工程研究所 | Spaceborne deployable plate aerial sub-truss and its assembly method |
| CN114218634A (en) * | 2021-12-08 | 2022-03-22 | 浙江大学 | Systematic generation method of planar expandable structure based on uniform embedding, hinge joint and hinge rod |
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| JP2006224866A (en) * | 2005-02-18 | 2006-08-31 | Mitsubishi Electric Corp | Deployable antenna for space |
| CN100541911C (en) * | 2003-09-10 | 2009-09-16 | 日本电信电话株式会社 | Expansion-type reflection mirror |
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2011
- 2011-11-24 CN CN 201110377547 patent/CN102386473B/en not_active Expired - Fee Related
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| CN100541911C (en) * | 2003-09-10 | 2009-09-16 | 日本电信电话株式会社 | Expansion-type reflection mirror |
| JP2006224866A (en) * | 2005-02-18 | 2006-08-31 | Mitsubishi Electric Corp | Deployable antenna for space |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840245A (en) * | 2012-11-23 | 2014-06-04 | 上海宇航系统工程研究所 | Planar unfoldable truss and stepwise unfolding method thereof |
| CN103840245B (en) * | 2012-11-23 | 2016-06-22 | 上海宇航系统工程研究所 | A kind of plane formula expandable truss and stepwise development method thereof |
| CN103107407A (en) * | 2013-01-21 | 2013-05-15 | 西北工业大学 | Annular series foldable mechanism configuration design method |
| CN103825098A (en) * | 2014-02-18 | 2014-05-28 | 哈尔滨工业大学深圳研究生院 | Framework type spatial foldable antenna unfolding mechanism |
| CN106486730A (en) * | 2015-08-26 | 2017-03-08 | 上海宇航系统工程研究所 | Spaceborne deployable plate aerial sub-truss and its assembly method |
| CN106486730B (en) * | 2015-08-26 | 2019-08-23 | 上海宇航系统工程研究所 | Spaceborne deployable plate aerial sub-truss and its assembly method |
| CN114218634A (en) * | 2021-12-08 | 2022-03-22 | 浙江大学 | Systematic generation method of planar expandable structure based on uniform embedding, hinge joint and hinge rod |
| CN114218634B (en) * | 2021-12-08 | 2024-03-19 | 浙江大学 | Plane expandable structure generating method with addition of hinge points and hinge rods |
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| CN102386473B (en) | 2013-08-28 |
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