CN109524757A - The contraposition zither shape structure for containing only revolute pair and its application on straight line Deployable antenna - Google Patents
The contraposition zither shape structure for containing only revolute pair and its application on straight line Deployable antenna Download PDFInfo
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- CN109524757A CN109524757A CN201811606106.0A CN201811606106A CN109524757A CN 109524757 A CN109524757 A CN 109524757A CN 201811606106 A CN201811606106 A CN 201811606106A CN 109524757 A CN109524757 A CN 109524757A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/084—Pivotable antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/10—Telescopic elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a kind of contraposition zither shape structure for containing only revolute pair and its applications on straight line Deployable antenna, this contains only the contraposition zither shape structure of revolute pair, is hingedly formed by plurality of rods；Two d bars are setting up and down, and two groups of b bars are symmetrically disposed on d bar two sides, and the first end point of three b bars is respectively articulated with；It is respectively hinged at second endpoint of two b bars positioned at two endpoints of the d bar of upside, the second endpoint of another two b bars is respectively hinged at positioned at two endpoints of the d bar of downside；A bar, c bar first end point be respectively hinged on bar d, at one times away from bar d endpoint a pole length of hinge joint, c bar, a bar formed a parallelogram；The point articulated hinge joint being connect in the second endpoint of a, c bar of second end of two not b bars point articulated with d rod end；A, the length ratio of b, c and d bar is 1:2:4:5.The structure can solve the problems, such as that existing antenna precision of expansion is not high, working frequency is limited, contain only revolute pair connection, be not susceptible to stuck.
Description
Technical field
The present invention relates to field of mechanical structure design, and in particular to a kind of contraposition zither shape structure for containing only revolute pair and its
Application on straight line Deployable antenna.
Background technique
Development agency originates from the 1960s, integrated by prefabricated unit, can initial closely structure state with work
It is converted between the deployed configuration of state, general there are two types of states: fully collapsed condition and fully unfolded position.Machine can be opened up at present
Structure is widely used in the every field such as aerospace, energy transport and industrial robot.At present aerospace field the problem of compared with
For protrusion, space Deployable antenna must assure that its biggish shrinking percentage, and when transport shrinks completely, and work is fully deployed, and is had
Higher rigidity property and lower quality of materials.The main research space development agency of many countries at present, and apply it to
Space can open up on satellite antenna.
Current Deployable antenna both domestic and external mainly includes inflatable Deployable antenna, netted Deployable antenna and stationary plane can Zhan Tian
Line.Inflatable Deployable antenna is easy to appear buckling phenomena in the work course, and operating accuracy is lower, is easy by environment
Influence；Netted Deployable antenna structure is complex, is unable to modularization processing and manufacturing, and quality is larger；Stationary plane Deployable antenna one
As be multiple driving parts, overall structure is complex, it cannot be guaranteed that the synchronous expansion of each stationary plane.
Summary of the invention
The present invention provides a kind of contraposition zither shape structure for containing only revolute pair and its application on straight line Deployable antenna, with
The problems such as existing antenna precision of expansion is not high and working frequency is limited is solved, which can not only mention by increasing module number
High applicable surface is long-pending, and single driving input is used only in overall mechanism, ensure that synchronous expansion, operation higher with bearing capacity
Flexibly, space utilization rate is high, be easy to modular manufacturing, contains only the advantages that revolute pair connection is not susceptible to stuck phenomenon.
For this purpose, technical scheme is as follows:
A kind of contraposition zither shape structure containing only revolute pair, is hingedly formed, including two a bars, six roots of sensation b bar, two by plurality of rods
Root c bar and two d bars；
A bar, b bar, c bar and d bar length ratio be 1:2:4:5；
Two d bars are setting up and down, and two groups of three b bars are symmetrically disposed at left and right sides of d bar, wherein the first end of three b bars
It is point articulated together, be labeled as point B；The first end point of remaining three b bars is hinged, is labeled as point B1；
Two endpoints positioned at the d bar of upside are respectively hinged on second endpoint of two b bars, and hinge joint is labeled as point A1
With point E1, two endpoints positioned at the d bar of downside are respectively hinged on the second endpoint of another two b bars, and hinge joint is labeled as point A
With point E；
Range points E on two d bars1Point D and point D are respectively labeled as with the point at mono- times of a pole length of point E1, the two o'clock not position
In ipsilateral, two a bars, two c bars first end point be respectively hinged at point D and point D1On；Second endpoint of two c bars is equal
It is point articulated with the second end of the not a bar hinged with its first end point, a parallelogram is formed, hinge joint is labeled as point C, point
C1；
Second endpoint of two b bars point articulated not with d rod end is respectively hinged at point C, point C1Place.
A kind of contraposition zither shape structure containing only revolute pair, including two basic units, the single basic unit is by more
Root bar hingedly forms, and the single basic unit includes an a bar, six roots of sensation b bar, a c bar and a d bar；A bar, b bar,
The length of c bar and d bar ratio is 1:2:4:5；
Wherein the first end point of three b bars is hinged, is labeled as point B, and second endpoint of this three b bars marks respectively
For point A, point C and point E1；
The first end point of remaining three b bars is hinged, is labeled as point B1, second endpoint of this three b bars marks respectively
It is denoted as point A1, point C1With point E；
Two endpoints of the d bar are respectively and labeled as point A1, point E1Endpoint it is hinged；
The first end point of a bar is hinged on d bar, and hinge joint is labeled as point D1, point D1With point E1Between length and a bar
Equal length；The second end of a bar is point articulated on the endpoint labeled as the b bar of point C；
The first end point of c bar is hinged on the point D of d bar1Place, second end is point articulated to be labeled as point C1B bar endpoint on；
Described two basic units are linked together by connection unit, and the connection unit is by bar x, bar y and bar z in
Hinged at point to constitute, this hinge joint is labeled as Q；The bar x and bar y are isometric, and the length is 8 times of a pole length；The bar z's
Length is 2 times of a pole length；Two endpoints of the bar x are respectively hinged at two basic units labeled as on the endpoint of point C；
Two endpoints of the bar z are respectively hinged at two basic units labeled as point C1Endpoint on；Two endpoints of the bar y point
Two basic units are not hinged on to be labeled as on the endpoint of point A, meanwhile, two basic units are cut with scissors labeled as the b rod end point of point E
It connects on bar x, distance of the hinge joint away from point Q is 1 times of a pole length.
A kind of contraposition zither shape structure containing only revolute pair is made of top module, bottom module and multiple bicycle middle modules；
The length ratio for constituting the top module, bottom module, a bar of bicycle middle module, b bar, c bar and d bar is 1:2:4:
5；Meanwhile bar x and bar y are isometric, the length is 8 times of a pole length；The length of bar z is 2 times of a pole length；
The top module is made of basic unit and connection unit；The basic unit is by an a bar, six roots of sensation b bar, one
Root c bar and a d bar hingedly form；The first end point of three b bars is hinged, be labeled as point B, the second of this three b bars
Endpoint is respectively labeled as point A, point C and point E1；The first end point of remaining three b bars is hinged, is labeled as point B1, this three b
Second endpoint of bar is respectively labeled as point A1, point C1With point E；Two endpoints of the d bar are respectively and labeled as point A1, point E1's
Endpoint is hinged；The first end point of a bar is hinged on d bar, and hinge joint is labeled as point D1, point D1With point E1Between length and a bar
Equal length；The second end of a bar is point articulated on the endpoint labeled as the b bar of point C；The first end point of c bar is hinged on the point of d bar
D1Place, second end is point articulated to be labeled as point C1B bar endpoint on；The connection unit is by bar x, bar y and bar z in midpoint
Hinged to constitute, this hinge joint is labeled as Q；The hinged top module marks of the first end point of the bar x are on the endpoint of point C；It is described
The first end point of bar z is hinged on top module labeled as point C1Endpoint on；The first end point of the bar y is hinged on top module
Labeled as on the endpoint of point A, top module is point articulated on bar y labeled as the b rod end of point E, second end of the hinge joint away from bar y
The length of point is 3 times of a pole length；
The bottom module is hingedly formed by an a bar, six roots of sensation b bar, a c bar and a d bar；The first of three b bars
Endpoint is hinged, is labeled as point B, and second endpoint of this three b bars is respectively labeled as point A, point C and point E1；Three b of residue
The first end point of bar is hinged, is labeled as point B1, second endpoint of this three b bars is respectively labeled as point A1, point C1With point E；
Two endpoints of the d bar are respectively and labeled as point A1, point E1Endpoint it is hinged；The first end point of a bar is hinged on d bar, hinge
Contact is labeled as point D1, point D1With point E1Between length it is equal with a pole length；The second end of a bar is point articulated to be labeled as point C
B bar endpoint on；The first end point of c bar is hinged on the point D of d bar1Place, second end is point articulated to be labeled as point C1B bar end
Point on；
The bicycle middle module is hingedly formed by bar x, bar y, bar z and six roots of sensation b bar；Wherein, the first end point of three b bars is hinged
Together, it is labeled as point B, second endpoint of this three b bars is respectively labeled as point A, point C and point E1；The first of remaining three b bars
Endpoint is hinged, is labeled as point B1, second endpoint of this three b bars is respectively labeled as point A1, point C1With point E；Bar x, bar y
Hinged in midpoint with bar z, this hinge joint is labeled as Q, and the first end point of the bar x and the b rod end labeled as point C are point articulated；
The first end point of the bar z be labeled as point C1B rod end it is point articulated；The first end point of the bar y and the b bar for being labeled as point A
Endpoint is hinged, point articulated on bar y labeled as the b rod end of point E, and the length of second endpoint of the hinge joint away from bar y is a pole length
3 times；
The connection relationship of adjacent two module are as follows: the second end of the bar x of a upper module it is point articulated next module marks be point
C1Endpoint at；The second end of the bar z of a upper module is point articulated at the endpoint that next module marks are point C；A upper module
The second end of bar y it is point articulated next module marks be point A1B rod end point on, next module marks be point E1B rod end point hinge
It connects on the bar y of a upper module, the length of first end point of the hinge joint away from bar y is 3 times of a pole length.
Application of the contraposition zither shape structure of revolute pair on straight line Deployable antenna is contained only by above-mentioned kind, including described in four only
Contraposition zither shape structure, connection frame and driving device containing revolute pair；The contraposition zither shape symmetrical configuration of revolute pair is contained only described in four
It is set on the connection frame, each contraposition zither shape structure outermost module forms four sides by two b bars, an a bar and part d bar
The corresponding position of d rod end point that shape is included is activation point；The driving device realizes institute by driving activation point rotation
The synchronous reciprocating for stating contraposition zither shape structure is flexible.
By application of the above-mentioned contraposition zither shape structure for containing only revolute pair on straight line Deployable antenna, the driving device includes
Four gear wheels, two middle gears, a pinion gear and motor；Four gear wheels are separately positioned on four activation points, and two
Middle gear is set between adjacent two each gear wheel；The output shaft of motor drives pinion rotation, in pinion gear and one of them
Gear engagement, two middle gears intermeshing, then engaged respectively with a gear wheel, the gear wheel engaged with middle gear respectively with
One gear wheel engagement constitutes gear set, motor rotation, while four bull wheels being driven to rotate synchronously, and realizes that four gear wheels are same
Walk reciprocating rotation.
Technical solution provided by the invention has the advantage that
1) revolute pair connection is contained only compared with traditional Deployable antenna, it is whole to use modularized design mode, processing and manufacturing side
Just, it is not susceptible to stuck phenomenon；
2) operating accuracy is higher, runs smoothly, single-degree-of-freedom driving, and synchronization is shunk in module expansion；
3) overall structure is stablized, and is not influenced by complex environment, power transmission performance is good, and bearing capacity is higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the contraposition zither shape structure of revolute pair is contained only in embodiment 1；
Fig. 2 is the structural schematic diagram that the contraposition zither shape structure of revolute pair is contained only in embodiment 2；
Fig. 3 is the structural schematic diagram that the contraposition zither shape structure of revolute pair is contained only in embodiment 3；
Fig. 4 be Fig. 3 in top module, bicycle middle module, bottom module broken away view；
Fig. 5 is to contain only application of the contraposition zither shape structure of revolute pair on straight line Deployable antenna in embodiment 3；
Fig. 6 is the partial enlarged view of driving device in Fig. 5；
Fig. 7 is the usage state diagram applied in Fig. 5.
Specific embodiment
Technical solution of the present invention is described in detail below in conjunction with drawings and examples.
Embodiment 1
As shown in Figure 1, a kind of contraposition zither shape structure for containing only revolute pair, is hingedly formed by plurality of rods, including two a bars,
Six roots of sensation b bar, two c bars and two d bars；
A bar, b bar, c bar and d bar length ratio be 1:2:4:5；
Two d bars are setting up and down, and two groups of three b bars are symmetrically disposed on d bar two sides, wherein the first end point hinge of three b bars
It is connected together, is labeled as point B；The first end point of remaining three b bars is hinged, is labeled as point B1；
Two endpoints positioned at the d bar of upside are respectively hinged on second endpoint of two b bars, and hinge joint is labeled as point A1
With point E1, two endpoints positioned at the d bar of downside are respectively hinged on the second endpoint of another two b bars, and hinge joint is labeled as point A
With point E,；
Range points E on two d bars1Point D and point D are respectively labeled as with the point at mono- times of a pole length of point E1, the two o'clock not position
In ipsilateral, two a bars, two c bars first end point be respectively hinged at point D and point D1On；Second endpoint of two c bars is and not
The second end of hinged a bar is point articulated with its first end point, forms a parallelogram, and hinge joint is labeled as point C, point C1；
Second endpoint of two b bars point articulated not with d rod end is respectively hinged at point C, point C1Place.
Embodiment 2
As shown in Fig. 2, a kind of contraposition zither shape structure for containing only revolute pair, including two basic units, it is described single basic
Unit is hingedly formed by plurality of rods, and the single basic unit includes an a bar, six roots of sensation b bar, a c bar and a d
Bar；A bar, b bar, c bar and d bar length ratio be 1:2:4:5；
Wherein the first end point of three b bars is hinged, is labeled as point B, and second endpoint of this three b bars marks respectively
For point A, point C and point E1；
The first end point of remaining three b bars is hinged, is labeled as point B1, second endpoint of this three b bars marks respectively
It is denoted as point A1, point C1With point E；
Two endpoints of the d bar are respectively and labeled as point A1, point E1Endpoint it is hinged；
The first end point of a bar is hinged on d bar, and hinge joint is labeled as point D1, point D1With point E1Between length and a bar
Equal length；The second end of a bar is point articulated on the endpoint labeled as the b bar of point C；
The first end point of c bar is hinged on the point D of d bar1Place, second end is point articulated to be labeled as point C1B bar endpoint on；
Described two basic units are linked together by connection unit, and the connection unit is by bar x, bar y and bar z in
Hinged at point to constitute, this hinge joint is labeled as Q；The bar x and bar y are isometric, and the length is 8 times of a pole length；The bar z's
Length is 2 times of a pole length；Two endpoints of the bar x are respectively hinged at two basic units labeled as on the endpoint of point C；
Two endpoints of the bar z are respectively hinged at two basic units labeled as point C1Endpoint on；Two endpoints of the bar y point
Two basic units are not hinged on to be labeled as on the endpoint of point A, meanwhile, two basic units are cut with scissors labeled as the b rod end point of point E
It connects on bar x, distance of the hinge joint away from point Q is 1 times of a pole length.
Embodiment 3
As shown in figure 3, a kind of contraposition zither shape structure for containing only revolute pair, by top module, bottom module and multiple middle parts
Module composition；
The length ratio for constituting the top module, bottom module, a bar of bicycle middle module, b bar, c bar and d bar is 1:2:4:
5；Meanwhile bar x and bar y are isometric, the length is 8 times of a pole length；The length of bar z is 2 times of a pole length；
The top module is made of basic unit and connection unit；The basic unit is by an a bar, six roots of sensation b bar, one
Root c bar and a d bar hingedly form；The first end point of three b bars is hinged, be labeled as point B, the second of this three b bars
Endpoint is respectively labeled as point A, point C and point E1；The first end point of remaining three b bars is hinged, is labeled as point B1, this three b
Second endpoint of bar is respectively labeled as point A1, point C1With point E；Two endpoints of the d bar are respectively and labeled as point A1, point E1's
Endpoint is hinged；The first end point of a bar is hinged on d bar, and hinge joint is labeled as point D1, point D1With point E1Between length and a bar
Equal length；The second end of a bar is point articulated on the endpoint labeled as the b bar of point C；The first end point of c bar is hinged on the point of d bar
D1Place, second end is point articulated to be labeled as point C1B bar endpoint on；The connection unit is by bar x, bar y and bar z in midpoint
Hinged to constitute, this hinge joint is labeled as Q；The hinged top module marks of the first end point of the bar x are on the endpoint of point C；It is described
The first end point of bar z is hinged on top module labeled as point C1Endpoint on；The first end point of the bar y is hinged on top module
Labeled as on the endpoint of point A, top module is point articulated on bar y labeled as the b rod end of point E, second end of the hinge joint away from bar y
The length of point is 3 times of a pole length；
The bottom module is hingedly formed by an a bar, six roots of sensation b bar, a c bar and a d bar；The first of three b bars
Endpoint is hinged, is labeled as point B, and second endpoint of this three b bars is respectively labeled as point A, point C and point E1；Three b of residue
The first end point of bar is hinged, is labeled as point B1, second endpoint of this three b bars is respectively labeled as point A1, point C1With point E；
Two endpoints of the d bar are respectively and labeled as point A1, point E1Endpoint it is hinged；The first end point of a bar is hinged on d bar, hinge
Contact is labeled as point D1, point D1With point E1Between length it is equal with a pole length；The second end of a bar is point articulated to be labeled as point C
B bar endpoint on；The first end point of c bar is hinged on the point D of d bar1Place, second end is point articulated to be labeled as point C1B bar end
Point on；
The bicycle middle module is hingedly formed by bar x, bar y, bar z and six roots of sensation b bar；Wherein, the first end point of three b bars is hinged
Together, it is labeled as point B, second endpoint of this three b bars is respectively labeled as point A, point C and point E1；The first of remaining three b bars
Endpoint is hinged, is labeled as point B1, second endpoint of this three b bars is respectively labeled as point A1, point C1With point E；Bar x, bar y
Hinged in midpoint with bar z, this hinge joint is labeled as Q, and the first end point of the bar x and the b rod end labeled as point C are point articulated；
The first end point of the bar z be labeled as point C1B rod end it is point articulated；The first end point of the bar y and the b bar for being labeled as point A
Endpoint is hinged, point articulated on bar y labeled as the b rod end of point E, and the length of second endpoint of the hinge joint away from bar y is a pole length
3 times；
As shown in figure 4, the connection relationship of adjacent two module are as follows: the second end of the bar x of a upper module is point articulated in next mould
Block is labeled as point C1Endpoint at；The second end of the bar z of a upper module is point articulated at the endpoint that next module marks are point C；
The second end of the bar y of a upper module it is point articulated next module marks be point A1B rod end point on, next module marks be point E1
B rod end it is point articulated on the bar y of a upper module, the length of first end point of the hinge joint away from bar y is 3 times of a pole length.
As shown in figure 5, the application by the above-mentioned contraposition zither shape structure for containing only revolute pair on straight line Deployable antenna, including four
A contraposition zither shape structure, connection frame and driving device for containing only revolute pair；Four contain only the contraposition zither shape symmetrical configuration of revolute pair
It is set on connection frame, each zither shape structure outermost module that aligns is by two b bars, an a bar and part d rod quadrangularly institute
The corresponding position of d rod end point for including is activation point；Driving device realizes contraposition zither shape knot by driving activation point rotation
The synchronous reciprocating of structure is flexible.
As shown in fig. 6, driving device includes four gear wheels (4), two middle teeth as one embodiment of the present invention
Take turns (3), a pinion gear (2) and motor (1)；Four gear wheels (4) are separately positioned on four activation points, two middle gears
(3) it is set between two neighboring gear wheel (4)；The output shaft of motor (1) drives pinion gear (2) rotation, pinion gear (2) and its
In the engagement of middle gear (3), two middle gears (3) intermeshings, then engaged respectively with a gear wheel (4), with middle gear
The gear wheel (4) of engagement is engaged with a gear wheel (4) respectively, constitutes gear set, motor (1) rotation, while being taken to four big
It takes turns (4) to rotate synchronously, realizes four gear wheel synchronous reciprocating rotations.It is final that overall mechanism is driven to realize synchronous, such as Fig. 7 institute
Show.
Claims (5)
1. a kind of contraposition zither shape structure for containing only revolute pair, is hingedly formed by plurality of rods, it is characterised in that: including two a bars, six
Root b bar, two c bars and two d bars；
A bar, b bar, c bar and d bar length ratio be 1:2:4:5；
Two d bars are setting up and down, and two groups of three b bars are symmetrically disposed at left and right sides of d bar, wherein the first end point hinge of three b bars
It is connected together, is labeled as point B；The first end point of remaining three b bars is hinged, is labeled as point B1；
Two endpoints positioned at the d bar of upside are respectively hinged on second endpoint of two b bars, and hinge joint is labeled as point A1And point
E1, two endpoints positioned at the d bar of downside are respectively hinged on the second endpoint of another two b bars, and hinge joint is labeled as point A and point
E；
Range points E on two d bars1Point D and point D are respectively labeled as with the point at mono- times of a pole length of point E1, which is not located at together
Side, two a bars, two c bars first end point be respectively hinged at point D and point D1On；Second endpoint of two c bars is and not
The second end of hinged a bar is point articulated with its first end point, forms a parallelogram, and hinge joint is labeled as point C, point C1；
Second endpoint of two b bars point articulated not with d rod end is respectively hinged at point C, point C1Place.
2. a kind of contraposition zither shape structure for containing only revolute pair, including two basic units, the single basic unit is by more
Bar hingedly forms, it is characterised in that: the single basic unit includes an a bar, six roots of sensation b bar, a c bar and a d
Bar；A bar, b bar, c bar and d bar length ratio be 1:2:4:5；
Wherein, the first end point of three b bars is hinged, is labeled as point B, and second endpoint of this three b bars is respectively labeled as
Point A, point C and point E1；
The first end point of remaining three b bars is hinged, is labeled as point B1, second endpoint of this three b bars is respectively labeled as a little
A1, point C1With point E；
Two endpoints of the d bar are respectively and labeled as point A1, point E1Endpoint it is hinged；
The first end point of a bar is hinged on d bar, and hinge joint is labeled as point D1, point D1With point E1Between length and a pole length
It is equal；The second end of a bar is point articulated on the endpoint labeled as the b bar of point C；
The first end point of c bar is hinged on the point D of d bar1Place, second end is point articulated to be labeled as point C1B bar endpoint on；
Described two basic units are linked together by connection unit, and the connection unit is by bar x, bar y and bar z in midpoint
Hinged to constitute, this hinge joint is labeled as Q；The bar x and bar y are isometric, and the length is 8 times of a pole length；The length of the bar z
It is 2 times of a pole length；Two endpoints of the bar x are respectively hinged at two basic units labeled as on the endpoint of point C；It is described
Two endpoints of bar z are respectively hinged at two basic units labeled as point C1Endpoint on；Two endpoints of the bar y are cut with scissors respectively
It connects on endpoint of two basic units labeled as point A, meanwhile, two basic units are hinged on labeled as the b rod end point of point E
On bar x, distance of the hinge joint away from point Q is 1 times of a pole length.
3. a kind of contraposition zither shape structure for containing only revolute pair, is made of top module, bottom module and multiple bicycle middle modules；Its
It is characterized in that:
The length ratio for constituting the top module, bottom module, a bar of bicycle middle module, b bar, c bar and d bar is 1:2:4:5；Together
When, bar x and bar y are isometric, and the length is 8 times of a pole length；The length of bar z is 2 times of a pole length；
The top module is made of basic unit and connection unit；The basic unit is by an a bar, six roots of sensation b bar, a c
Bar and a d bar hingedly form；The first end point of three b bars is hinged, is labeled as point B, second endpoint of this three b bars
It is respectively labeled as point A, point C and point E1；The first end point of remaining three b bars is hinged, is labeled as point B1, this three b bars
Second endpoint is respectively labeled as point A1, point C1With point E；Two endpoints of the d bar are respectively and labeled as point A1, point E1Endpoint
Hingedly；The first end point of a bar is hinged on d bar, and hinge joint is labeled as point D1, point D1With point E1Between length and a pole length
It is equal；The second end of a bar is point articulated on the endpoint labeled as the b bar of point C；The first end point of c bar is hinged on the point D of d bar1
Place, second end is point articulated to be labeled as point C1B bar endpoint on；The connection unit is cut with scissors by bar x, bar y and bar z in midpoint
Composition is connect, this hinge joint is labeled as Q；The hinged top module marks of the first end point of the bar x are on the endpoint of point C；The bar z
First end point be hinged on top module labeled as point C1Endpoint on；The first end point of the bar y is hinged on top module mark
It is denoted as on the endpoint of point A, top module is point articulated on bar y labeled as the b rod end of point E, second endpoint of the hinge joint away from bar y
Length be 3 times of a pole length；
The bottom module is hingedly formed by an a bar, six roots of sensation b bar, a c bar and a d bar；The first end point of three b bars
It is hinged, it is labeled as point B, second endpoint of this three b bars is respectively labeled as point A, point C and point E1；Remaining three b bars
First end point is hinged, is labeled as point B1, second endpoint of this three b bars is respectively labeled as point A1, point C1With point E；It is described
Two endpoints of d bar are respectively and labeled as point A1, point E1Endpoint it is hinged；The first end point of a bar is hinged on d bar, hinge joint
Labeled as point D1, point D1With point E1Between length it is equal with a pole length；The second end of a bar is point articulated in the b bar for being labeled as point C
Endpoint on；The first end point of c bar is hinged on the point D of d bar1Place, second end is point articulated to be labeled as point C1B bar endpoint on；
The bicycle middle module is hingedly formed by bar x, bar y, bar z and six roots of sensation b bar；Wherein, the first end point of three b bars is hinged on one
It rises, is labeled as point B, second endpoint of this three b bars is respectively labeled as point A, point C and point E1；The first end point of remaining three b bars
It is hinged, it is labeled as point B1, second endpoint of this three b bars is respectively labeled as point A1, point C1With point E；Bar x, bar y and bar z
Hinged in midpoint, this hinge joint is labeled as Q, and the first end point of the bar x and the b rod end labeled as point C are point articulated；The bar
The first end point of z be labeled as point C1B rod end it is point articulated；The first end point of the bar y is cut with scissors with the b rod end point labeled as point A
It connects, point articulated on bar y labeled as the b rod end of point E, the length of second endpoint of the hinge joint away from bar y is 3 times of a pole length；
The connection relationship of adjacent two module are as follows: the second end of the bar x of a upper module it is point articulated next module marks be point C1End
At point；The second end of the bar z of a upper module is point articulated at the endpoint that next module marks are point C；The of the bar y of a upper module
It is point A that two endpoints, which are hinged on next module marks,1B rod end point on, next module marks be point E1B rod end it is point articulated upper
On the bar y of one module, the length of first end point of the hinge joint away from bar y is 3 times of a pole length.
4. as any one in claims 1 to 3 contains only application of the contraposition zither shape structure of revolute pair on straight line Deployable antenna,
It is characterized by comprising contraposition zither shape structure, connection frame and driving devices that revolute pair is contained only described in four；It is contained only described in four
The contraposition zither shape symmetrical configuration of revolute pair is set on the connection frame, it is each align zither shape structure outermost module by two b bars,
One a bar position corresponding with the d rod end point that part d rod quadrangularly is included is activation point；The driving device is logical
The rotation of drive activation point is crossed, realizes that the synchronous reciprocating of the contraposition zither shape structure is flexible.
5. containing only application of the contraposition zither shape structure of revolute pair on straight line Deployable antenna as claimed in claim 4, feature exists
In: the driving device includes four gear wheels (4), two middle gears (3), a pinion gear (2) and motor (1)；It is four big
Gear (4) is separately positioned on four activation points, and two middle gears (3) are set between adjacent two each gear wheel (4)；Motor
(1) output shaft drives pinion gear (2) rotation, and pinion gear (2) is engaged with one of middle gear (3), two middle gear (3) phases
Mutually engagement, then engaged respectively with a gear wheel (4), the gear wheel (4) engaged with middle gear is nibbled with a gear wheel (4) respectively
It closes, constitutes gear set, motor (1) rotation, while four bull wheels (4) being driven to rotate synchronously, realize four gear wheel synchronous reciprocatings
Rotation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606106.0A CN109524757B (en) | 2018-12-27 | 2018-12-27 | Para-position zither structure only containing revolute pair and application of para-position zither structure to linearly expandable antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606106.0A CN109524757B (en) | 2018-12-27 | 2018-12-27 | Para-position zither structure only containing revolute pair and application of para-position zither structure to linearly expandable antenna |
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| CN109524757B CN109524757B (en) | 2023-06-06 |
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| CN201811606106.0A Active CN109524757B (en) | 2018-12-27 | 2018-12-27 | Para-position zither structure only containing revolute pair and application of para-position zither structure to linearly expandable antenna |
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| CN109524757B (en) | 2023-06-06 |
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