CN202503095U - Scissor-based quadrangle element planar array extendable mechanism - Google Patents
Scissor-based quadrangle element planar array extendable mechanism Download PDFInfo
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- CN202503095U CN202503095U CN2012201034976U CN201220103497U CN202503095U CN 202503095 U CN202503095 U CN 202503095U CN 2012201034976 U CN2012201034976 U CN 2012201034976U CN 201220103497 U CN201220103497 U CN 201220103497U CN 202503095 U CN202503095 U CN 202503095U
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Abstract
The utility model discloses a scissor-based quadrangle element planar array extendable mechanism which is formed by the horizontal and vertical array combinations of a plurality of scissor quadrangle elements. The quadrangle element mechanisms are connected through shared scissor components and angular point hinge components. When the scissor-based quadrangle element planar array extendable mechanism is fully extended, under the effects of locking springs and locking pins, the whole mechanism is stabilized in the extended state. When the extending completes, the mechanism is automatically locked. The mechanism has pole elements in diagonal directions to support, the system rigidness is increased, and the impulse response is not sensitive. The whole system only has one freedom of motion, and is simple to drive. The mechanism does not need an auxiliary system to compensate the frictional force, and the mechanism has a simple structure, a low weight, a high extending precision, a stable extending process, and good synchronization. Under the condition of not changing the structure and size of each component, the number of the element mechanisms can be increased or decreased at will as required, and each component can be repeatedly used.
Description
Technical field
The utility model relates to the flat unit mechanism with big shrinkage ratio, specifically, relates to a kind of scissors base quadrilateral units planar array development agency, belongs to the structure-design technique field.
Background technology
The shrinkage ratio of onboard antenna system for satellite development mechanism and the size of rigidity are to differentiate the good and bad important indicator of various onboard antenna system for satellite development mechanism performances.The development mechanism that is used for onboard antenna system for satellite is at present mainly combined through certain mode by a plurality of contractile elementary cell mechanism, realizes the function of synchronous and expansion.A kind of common deployable mechanism is to be that unit mechanisms is carried out annular array with the parallel-crank mechanism.Hinged between each connecting rod of unit mechanisms, by rope series connection and drive each unit and launch.Though the type deployable mechanism has the big advantage of shrinkage ratio, also exists some shortcomings.Owing to the existence of friction, the pulling force that rope provides is constantly decay in transmittance process on the one hand, be difficult to the synchronism of high-precision assurance expansion process, and when launching to put in place, system shock is big.Synchronous in order to guarantee expansion process, need the synchronising hinge mechanism of design special, not only increase design and manufacture cost, and increased the weight of system, it is complicated that structure also seems.On the other hand, when the type development agency launched to accomplish, rigidity was relatively poor; Have to adopt pulley and expansion link to come process auxiliary drive in order to improve its rigidity, make system configuration complicated, precision of expansion is low; Impulse response is responsive, directly influences the useful life and the work quality of satellite.In order to improve the performance of antenna system, have to improve the manufacturing and the assembly precision of each parts, make its design, manufacturing, assembling process difficulty.Another kind of common deployable mechanism is the petal type deployable mechanism.The type development agency not only needs the unit mechanisms of annular array locked at expanded position; As supporting construction, and has the curved-surface structure of petal type, though its rigidity is better; But; Because each piece curved-surface structure is not collapsible, so shrinkage ratio is less, can not satisfy the needs of onboard antenna system for satellite.On the other hand; This mechanism still gets up each unit mechanisms in series through rope; Connecting portion has all used pulley to come process auxiliary drive between each inside, unit and unit, and in order to remedy the friction loss that power produces when transmitting through rope, this mechanism has used the spring force compensation arrangement; Complex structure not only, and the weight of system is increased.
The utility model content
For fear of the deficiency that prior art exists, overcome that its system configuration is complicated, precision of expansion is low, manufacturing cost is high, the impulse response sensitive issue, the utility model proposes a kind of scissors base quadrilateral units planar array development agency.Through horizontal and vertical array combination, system has only one degree of freedom to entire mechanism by a plurality of scissors quadrilateral units mechanism, drives simple; Tandem drive between each unit mechanisms, precision of expansion is high, and synchronism is good, and expansion process is steady.The quantity of unit mechanisms can increase arbitrarily or reduce as required, and each parts is reusable.
The utility model solves the technical scheme that its technical problem adopted: the plane development agency comprises that a plurality of scissors quadrilateral units respectively in horizontal and vertical connection combination, are connected with the angle point hinge component through shared scissors assembly between the unit mechanisms; Described scissors quadrilateral units is made up of eight angle point hinge components, four scissors assemblies, two center hinge assemblies, eight diagonal bar assemblies; Center hinge assembly vertical direction is arranged; The minor axis of center hinge assembly is connected with the sliding bearing of diagonal bar assembly; Diagonal bar assembly in the vertical direction is cross and arranges; The other end of diagonal bar assembly is connected with the minor axis of the Type B joint bearing of angle point hinge component, and the minor axis of the A type joint bearing of angle point hinge component is connected with the sliding bearing of scissors assembly;
Said angle point hinge component comprises angle point joint, sliding bearing, minor axis, A type joint bearing, Type B joint bearing, lock pin, locking spring, lightening hole; Said angle point joint circumferentially is uniformly distributed with A type joint bearing and Type B joint bearing is set; A type joint bearing is positioned at above the Type B joint bearing; And on coaxial line, misplace mutually 45 °; Joint bearing end has dead eye that sliding bearing and minor axis are installed, and the outer side of the dead eye of A type joint bearing is provided with lock pin and locking spring, and angle point joint center is provided with lightening hole;
Said scissors assembly comprises hollow round bar, forked element, rolling bearing, bearing pedestal joint, thread spindle, stop nut and check washer; Said bearing pedestal joint is fixed with rolling bearing; Thread spindle passes the rolling bearing two ends check washer and stop nut is installed; Two bearing pedestal joints are connected with hollow round bar respectively, and the other end of hollow round bar is connected with forked element;
Said center hinge assembly comprises center sub, sliding bearing, minor axis, and said center sub is installed with sliding bearing and minor axis along end, extension, four limits;
Said diagonal bar assembly comprises the hollow round bar in diagonal angle, forked element, taper locking hole, sliding bearing; One end of said forked element is that the sleeve of recessed sky is connected with the hollow round bar in diagonal angle; The other end is two relative auricles; Sliding bearing is installed respectively on the auricle, and there is the taper locking hole auricle upper end.
The open circles pole length ratio of hollow round bar in the diagonal angle of said diagonal bar assembly and scissors assembly is 1: 1.5.According to the proportionate relationship of length of connecting rod, the linkage shrinkage ratio that assembling is accomplished is 1: 11, and can guarantee the service behaviour of each unit mechanisms in whole system.In practical application, can regulate shrinkage ratio through the adjustment start point according to the requirement of different situations and operational environment.
The connecting rod spreading angle of described scissors assembly is 10 °～170 °.When normal the expansion, drive the scissors assembly by external force and begin to launch by contraction state, it is big that the exhibition angle of scissors assembly becomes, and drives diagonal angle link assembly and other scissors assembly motion simultaneously through the angle point hinge component, thereby realize the expansion of unit mechanisms.After mechanism reaches predetermined maximum exhibition angle, make mechanism locked by the locking device of angle point hinge component, stablely remain on maximum exhibition horn shape attitude.
The beneficial effect of the utility model is: scissors base quadrilateral units planar array development agency is to be made up in horizontal and vertical connection respectively by a plurality of scissors quadrilateral units, is connected with the angle point hinge component through shared scissors assembly between the unit mechanisms; When launching fully, under the effect of locking spring and lock pin, entire mechanism is stabilized in deployed condition, after launch accomplishing, be automatically locked, and diagonal has bar unit to support, and system stiffness is high, and impulse response is insensitive.Whole system has only one degree of freedom, drives simply, and mechanism does not need auxiliary system friction compensation power, and is simple in structure, in light weight, and precision of expansion is high, and expansion process is steady, and synchronism is good; Under the situation of structure that does not change each part and size, welcome increase of the quantity of unit mechanisms or minimizing as required, each parts is reusable.
Description of drawings
Below in conjunction with accompanying drawing and execution mode the utility model scissors base quadrilateral units planar array development agency is done further explain.
Fig. 1 is the complete contraction state sketch map of the utility model scissors base quadrilateral units planar array development agency.
Fig. 2 is the complete deployed condition sketch map of the utility model scissors base quadrilateral units planar array development agency.
Fig. 3 is the scissors base quadrilateral units structural scheme of mechanism of the utility model.
Fig. 4 is the angle point hinge component sketch map of the utility model.
Fig. 5 is the sketch map of lock pin and locking spring in the angle point hinge component.
Fig. 6 is the scissors assembly sketch map of the utility model.
Fig. 7 is the cutaway view along A-A line among Fig. 6.
Fig. 8 is the forked element sketch map.
Fig. 9 is the center hinge assembly sketch map of the utility model.
Figure 10 is the diagonal bar assembly sketch map of the utility model.
Figure 11 is known parallelogram annular array development agency sketch map.
Figure 12 is known petal type development agency sketch map.
Among the figure:
1. the hollow round bar 7. angle point joints in angle point hinge component 2. scissors assemblies 3. center hinge assemblies 4. diagonal bar assemblies 5. hollow round bars 6. diagonal angles 8. sliding bearings 9. minor axises 10. lock pins 11. lightening hole 12.A type joint bearing 13.B type joint bearings 14. center subs 15. locking springs 16. forked elements 17. bearing pedestal joints 18. check washers 19. stop nuts 20. thread spindles 21. rolling bearings 22. taper locking holes
Embodiment
Present embodiment is a kind of scissors base quadrilateral units planar array development agency; Respectively in horizontal and vertical array combination, each scissors quadrilateral units mechanism is made up of eight angle point hinge components, four scissors assemblies, two center hinge assemblies, eight diagonal bar assemblies by a plurality of scissors quadrilateral units.
Referring to Fig. 1, Fig. 2, Fig. 3; Scissors base quadrilateral units development agency by a plurality of identical scissors quadrilateral units mechanism respectively in horizontal and vertical connection combination; In each scissors quadrilateral units mechanism; Center hinge assembly 3 in the vertical directions are arranged, and the minor axis of center hinge assembly 3 is connected with the sliding bearing of diagonal bar assembly 4, and diagonal bar assembly 4 in the vertical directions are cross and arrange; The other end of diagonal bar assembly 4 is connected with the minor axis of the Type B joint bearing 13 of angle point hinge component 1, and the minor axis of the A type joint bearing 12 of angle point hinge component 1 is connected with the sliding bearing of scissors assembly 2; Be connected with angle point hinge component 1 through shared scissors assembly 2 between the quadrilateral units mechanism, constitute required plane development agency; Element number is by the size decision of area after launching and quadrilateral units mechanism.
The angle point hinge component comprises angle point joint 7, eight sliding bearings 8, eight minor axises 9, A type joint bearing 12, Type B joint bearing 13, eight lock pins 10, four locking springs 15 and lightening holes 11, and is as shown in Figure 4.Angle point joint center is provided with lightening hole 11; Angle point joint 7 circumferentially is uniformly distributed with A type joint bearing 12 and Type B joint bearing 13 is set; A type joint bearing 12 is positioned at above the Type B joint bearing 13, and on coaxial line, misplaces mutually 45 °, and joint bearing end is provided with dead eye; Eight sliding bearings 8 are separately fixed in eight dead eyes on the joint bearing, and eight minor axises 9 are installed in respectively in eight sliding bearings 8; Dead eye one side of A type joint bearing 12 is provided with lock pin 10 and locking spring 15, and the end of lock pin is the cylinder that has tapering, and the locking spring is fixed on the centre of lock pin, and is as shown in Figure 5.
Consult Fig. 6, Fig. 7, Fig. 8; The scissors assembly comprises four hollow round bars 5, four forked elements 16, four rolling bearings 21, two bearing pedestal joints 17, thread spindle 20, check washer 18, stop nut 19, taper locking hole 22; Bearing pedestal joint 17 is installed with rolling bearing 21; Thread spindle 20 passes the inner ring two ends of rolling bearing 21 check washer 18 and stop nut 19 is installed; Two bearing pedestal joints 17 are connected with hollow round bar 5 respectively, and the other end of hollow round bar 5 is connected with forked element 16, and dead eye fixed installation sliding bearing is respectively arranged on the auricle of forked element 16.Taper locking hole 22 is arranged on the auricle of forked element 16.
As shown in Figure 9; The center hinge assembly includes center sub 14, four sliding bearings 8 and four minor axises 9; Center sub 14 has four dead eyes along end, extension, four limits, is used for fixing 8, four minor axises 9 of four sliding bearings of installation and is installed in four sliding bearings 8.
The diagonal bar assembly comprises the hollow round bar in diagonal angle 6, two forked elements 16 and four sliding bearings 8 and taper locking hole 22, and is shown in figure 10.Forked element is identical with the structure of forked element in the scissors assembly, and an end of forked element 16 is that the sleeve of recessed sky is connected with the hollow round bar 6 in diagonal angle, and the other end is two relative auricles, and sliding bearing 8 is installed respectively on the auricle, and there is taper locking hole 22 the auricle upper end.The two ends of the hollow round bar 6 in each diagonal angle fixedly mount forked element 16 respectively.
The connecting rod spreading angle scope of scissors assembly 2 is 10 °～170 °.When normal the expansion, drive scissors assembly 2 by external force and begin to launch by contraction state, it is big that the start point of scissors assembly 2 becomes, and drives diagonal bar assembly 4 and other scissors assembly motion simultaneously through angle point hinge component 1, thereby realize the expansion of unit mechanisms.After mechanism reaches predetermined maximum exhibition angle, make mechanism locked by the locking device of angle point hinge component 1, stablely remain on maximum exhibition horn shape attitude.
When normal the expansion; With any scissors assembly 2 is driving link, makes it under the external force driving action, begun to launch by contraction state, and the connecting rod exhibition angle of scissors assembly 2 becomes big; Through diagonal bar assembly in the angle point hinge component 1 drive unit 4 and adjacent scissors assembly 2 motions; Realize the expansion of unit mechanisms, drive adjacent quadrilateral units through shared angle point hinge component 1 with scissors assembly 2 simultaneously and launch, realize the synchronous expansion of entire mechanism.In expansion process, lock pin 10 1 ends in the angle point hinge component 1 withstand on the end face of forked element 16 of scissors assembly 2, and the other end receives the thrust of locking spring 15, and locking spring two ends withstand on respectively on the section of two lock pins 10, are in compressive state.After mechanism reaches predetermined maximum start point; The taper locking hole centering of lock pin on the angle point joint and forked element upper end; Lock pin in the angle point hinge component moves under the thrust of locking spring; Make an end of lock pin insert in the taper locking hole of forked element, and the other end of lock pin still is in the locking hole of angle point joint, this moment, the locking spring still was in compressive state.Because the effect of locking mechanism, by locked, mechanism loses the degree of freedom in maximum angle of spread position in mechanism, promptly is stabilized in maximum start point state.
In each scissors base quadrilateral units mechanism, the scissors quadrilateral units is quadrangle form, and is hinged through hinge between each hinge component and scissors assembly and the diagonal angle rod member.When launching fully, under the effect of locking spring and lock pin, entire mechanism is stabilized in deployed condition, increases the rigidity of system through diagonal bar.
Shown in figure 11, be a kind of common parallelogram annular array development agency, mechanism is to be that unit mechanisms is carried out annular array with the parallel-crank mechanism, and is hinged between each connecting rod of unit mechanisms, connected and driven each unit by rope and launch.The deployable mechanism shrinkage ratio is big, but because the existence of friction, the pulling force that rope provides is constantly decay in transmittance process, be difficult to the synchronism of high-precision assurance expansion process, and when launching to put in place, system shock is big.
Figure 12 is known petal type development agency, and this mechanism needs the unit mechanisms of annular array locked at expanded position, as supporting construction, has the curved-surface structure of petal type, and its rigidity is better, but each piece curved-surface structure is not collapsible, and shrinkage ratio is less.
Claims (3)
1. a scissors base quadrilateral units planar array development agency is characterized in that comprising that a plurality of scissors quadrilateral units respectively in horizontal and vertical connection combination, are connected with the angle point hinge component through shared scissors assembly between the unit mechanisms; Described scissors quadrilateral units is made up of eight angle point hinge components, four scissors assemblies, two center hinge assemblies, eight diagonal bar assemblies; Center hinge assembly vertical direction is arranged; The minor axis of center hinge assembly is connected with the sliding bearing of diagonal bar assembly; Diagonal bar assembly in the vertical direction is cross and arranges; The other end of diagonal bar assembly is connected with the minor axis of the Type B joint bearing of angle point hinge component, and the minor axis of the A type joint bearing of angle point hinge component is connected with the sliding bearing of scissors assembly;
Said angle point hinge component comprises angle point joint, sliding bearing, minor axis, A type joint bearing, Type B joint bearing, lock pin, locking spring, lightening hole; Said angle point joint circumferentially is uniformly distributed with A type joint bearing and Type B joint bearing is set; A type joint bearing is positioned at Type B joint bearing top, and on coaxial line, misplaces mutually 45 °, and joint bearing end has dead eye that sliding bearing and minor axis are installed; A type joint bearing is provided with lock pin and locking spring, and there is lightening hole at angle point joint center;
Said scissors assembly comprises hollow round bar, forked element, rolling bearing, bearing pedestal joint, thread spindle, stop nut and check washer; Said bearing pedestal joint is fixed with rolling bearing; Thread spindle passes the rolling bearing two ends check washer and stop nut is installed; Two bearing pedestal joints are connected with hollow round bar respectively, and the other end of hollow round bar is connected with forked element;
Said center hinge assembly comprises center sub, sliding bearing, minor axis, and said center sub is installed with sliding bearing and minor axis along end, extension, four limits;
Said diagonal bar assembly comprises the hollow round bar in diagonal angle, forked element, taper locking hole, sliding bearing; One end of said forked element is that the sleeve of recessed sky is connected with the hollow round bar in diagonal angle; The other end is two relative auricles; Sliding bearing is installed respectively on the auricle, and there is the taper locking hole auricle upper end.
2. scissors base quadrilateral units planar array development agency according to claim 1, it is characterized in that: the open circles pole length ratio of hollow round bar in the diagonal angle of described diagonal bar assembly and scissors assembly is 1: 1.5.
3. scissors base quadrilateral units planar array development agency according to claim 1, it is characterized in that: the connecting rod spreading angle of described scissors assembly is 10 °～170 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201034976U CN202503095U (en) | 2012-03-19 | 2012-03-19 | Scissor-based quadrangle element planar array extendable mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201034976U CN202503095U (en) | 2012-03-19 | 2012-03-19 | Scissor-based quadrangle element planar array extendable mechanism |
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| CN202503095U true CN202503095U (en) | 2012-10-24 |
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| CN2012201034976U Withdrawn - After Issue CN202503095U (en) | 2012-03-19 | 2012-03-19 | Scissor-based quadrangle element planar array extendable mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593571A (en) * | 2012-03-19 | 2012-07-18 | 西北工业大学 | Scissors-based quadrilateral unit planar array developable mechanism |
| CN105799950A (en) * | 2016-03-18 | 2016-07-27 | 燕山大学 | Single-degree-of-freedom overconstrained shear-type deployable unit and space deployable mechanisms composed of same |
| CN106426276A (en) * | 2015-08-12 | 2017-02-22 | 佛山市禾才科技服务有限公司 | Double-triangular composite mechanical arm |
| CN107946725A (en) * | 2017-11-07 | 2018-04-20 | 广西大学 | A kind of folding and unfolding mechanism of double-slider spring assembly constraint telescopic rod |
| CN108412987A (en) * | 2018-03-14 | 2018-08-17 | 北京航空航天大学 | A kind of reversible pulley gear for driving development agency of restricting |
-
2012
- 2012-03-19 CN CN2012201034976U patent/CN202503095U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593571A (en) * | 2012-03-19 | 2012-07-18 | 西北工业大学 | Scissors-based quadrilateral unit planar array developable mechanism |
| CN102593571B (en) * | 2012-03-19 | 2014-02-26 | 西北工业大学 | Scissors-based quadrilateral unit planar array developable mechanism |
| CN106426276A (en) * | 2015-08-12 | 2017-02-22 | 佛山市禾才科技服务有限公司 | Double-triangular composite mechanical arm |
| CN105799950A (en) * | 2016-03-18 | 2016-07-27 | 燕山大学 | Single-degree-of-freedom overconstrained shear-type deployable unit and space deployable mechanisms composed of same |
| CN107946725A (en) * | 2017-11-07 | 2018-04-20 | 广西大学 | A kind of folding and unfolding mechanism of double-slider spring assembly constraint telescopic rod |
| CN107946725B (en) * | 2017-11-07 | 2020-01-10 | 广西大学 | Folding and unfolding mechanism of double-slider spring combination constraint telescopic rod |
| CN108412987A (en) * | 2018-03-14 | 2018-08-17 | 北京航空航天大学 | A kind of reversible pulley gear for driving development agency of restricting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121024 Effective date of abandoning: 20140226 |
|
| RGAV | Abandon patent right to avoid regrant |