CN114039213B - Over-constrained rectangular pyramid modular parabolic cylinder antenna deployable mechanism - Google Patents
Over-constrained rectangular pyramid modular parabolic cylinder antenna deployable mechanism Download PDFInfo
- Publication number
- CN114039213B CN114039213B CN202111302744.5A CN202111302744A CN114039213B CN 114039213 B CN114039213 B CN 114039213B CN 202111302744 A CN202111302744 A CN 202111302744A CN 114039213 B CN114039213 B CN 114039213B
- Authority
- CN
- China
- Prior art keywords
- hinge
- folding
- pyramid
- over
- unfolding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 117
- 230000001360 synchronised effect Effects 0.000 claims description 53
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 16
- 230000033001 locomotion Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005381 potential energy Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses an over-constrained rectangular pyramid modular parabolic cylinder antenna deployable mechanism which comprises a plurality of transverse folding and unfolding modules, wherein adjacent transverse folding and unfolding modules are connected with a locking device through a longitudinal connecting hinge; the invention realizes modular expansion by using the over-constrained rectangular pyramid deployable units, and is convenient for expanding the deployment area of the parabolic cylindrical antenna; the modularization also reduces the production difficulty.
Description
Technical Field
The invention relates to the technical field of space foldable mechanisms, in particular to an over-constrained rectangular pyramid modular parabolic cylinder antenna unfoldable mechanism.
Background
With the continuous development of aerospace industry, the space foldable and unfoldable mechanism is widely applied to tasks such as space stations, satellite antennas, space telescopes, earth observation and the like. In the development of satellite antennas, a great deal of research has been conducted on a front antenna and a loop antenna. The traditional array antenna has the remarkable characteristics of simple unfolding motion, high unfolding height and high resolution. Most of the loop antennas have the advantages of high toughness, high thermal stability, large folding ratio and simple structure.
However, the degree of folding of the loop antenna and the front antenna surface is still not high, and the increase of the number of antennas causes excessive mass increase, which causes a decrease in the reliability of the antenna deployment and the accuracy of the profile, or a decrease in the dynamic stiffness.
In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the invention adopts the technical scheme that an over-constrained rectangular pyramid modular parabolic cylinder antenna unfolding mechanism is provided and comprises a plurality of transverse folding and unfolding modules, adjacent transverse folding and unfolding modules are connected through longitudinal connecting hinges and locking devices, adjacent transverse folding and unfolding modules are folded or unfolded through the longitudinal connecting hinges, and the locking devices are used for locking the unfolding states of the adjacent transverse folding and unfolding modules.
Preferably, the longitudinal connecting hinge comprises a longitudinal cylindrical half-tooth hinge and a longitudinal connecting baffle, the two longitudinal cylindrical half-tooth hinges are respectively arranged at two ends of the longitudinal connecting baffle in a rotating manner through a rotating shaft, the two longitudinal cylindrical half-tooth hinges are meshed and connected with each other on the longitudinal connecting baffle, and the two longitudinal cylindrical half-tooth hinges are respectively fixedly arranged at two adjacent transverse folding and unfolding modules on the longitudinal connecting baffle.
Preferably, the locking device comprises a base, springs, limiting pins and locking columns, the base and the locking columns are respectively fixed on two adjacent transverse folding and unfolding modules, an axial insertion hole and a setting hole perpendicular to the insertion hole are formed in the base, the two limiting pins and the two springs are symmetrically arranged on two sides of the insertion hole, and the limiting pins and the springs are arranged in the setting hole in a one-to-one matching manner; the locking post can be inserted into the inserting hole, a fixing hole is formed in the locking post, and the end portion of the limiting pin is arranged in the fixing hole under the action of the elastic force of the spring.
Preferably, the transverse folding and unfolding module comprises a first over-constrained rectangular pyramid unfolding mechanism of a first kind, a first over-constrained rectangular pyramid unfolding mechanism of a second kind, a second over-constrained rectangular pyramid unfolding mechanism of a second kind, and a second over-constrained rectangular pyramid unfolding mechanism of a first kind; the first type over-constrained rectangular pyramid deployable mechanism is connected with the first second type over-constrained rectangular pyramid deployable mechanism through a cone top hinge and a synchronous joint baffle, the first second type over-constrained rectangular pyramid deployable mechanism is connected with the second type over-constrained rectangular pyramid deployable mechanism through a synchronous hinge, and the second type over-constrained rectangular pyramid deployable mechanism is connected with the second first type over-constrained rectangular pyramid deployable mechanism through a cone top hinge and a synchronous joint baffle.
Preferably, the synchronous hinge comprises two synchronous rod joints, two synchronous connecting rods, two synchronous cylindrical gear joints, two volute springs, a baffle plate and two second pin shafts, two ends of each synchronous connecting rod are respectively connected with the synchronous rod joints and the synchronous cylindrical gear joints, the two synchronous connecting rods are respectively connected with the first and second over-constrained rectangular pyramid deployable mechanisms and the second and second over-constrained rectangular pyramid deployable mechanisms through the synchronous rod joints, the two synchronous cylindrical gear joints are connected in a meshed manner, the synchronous cylindrical gear joints are rotatably connected to the baffle plate through the second pin shafts, and the volute springs are sleeved on the second pin shafts.
Preferably, the first over-constrained pyramid unfolding mechanism of the first kind, the over-constrained pyramid unfolding mechanism of the second kind, and the over-constrained pyramid unfolding mechanism of the second kind each include a bottom quadrilateral frame, a folding triangular frame, and a supporting triangular frame, wherein two ends of the bottom quadrilateral frame are respectively connected with the folding triangular frame and the supporting triangular frame, and the folding triangular frame and the supporting triangular frame are rotatably connected.
Preferably, the two first bottom vertical rods are connected by a bottom vertical rod hinge, a first bottom synchronous hinge and a second bottom synchronous hinge, the two bottom cross rods are connected by the first bottom synchronous hinge, the second bottom synchronous hinge and two bottom cross rods, and the bottom diagonal rods are connected by two bottom diagonal rod hinges, so as to form the bottom quadrilateral frame.
Preferably, a bottom folding bar is connected with a top folding bar through a first folding hinge or a second folding hinge to form two symmetrically arranged folding bars, two ends of one folding bar are respectively provided with a first folding bar bottom hinge and a first folding bar top hinge, and two ends of the other folding bar are respectively provided with a second folding bar bottom hinge and a second folding bar top hinge, so as to form the folding triangular frame; the folding rod is connected with the two top folding rods through a hinge.
Preferably, the two support rods are symmetrically arranged, two ends of one support rod are respectively provided with a first support rod top hinge and a first support rod bottom hinge, and two ends of the other support rod are respectively provided with a second support rod top hinge and a second support rod bottom hinge, so as to form the support triangular frame of the first class of overconstrained rectangular pyramid deployable mechanism;
preferably, the two support rods are hinged by four support rods and symmetrically arranged to form a support triangular frame of the second type of over-constrained rectangular pyramid deployable mechanism.
Preferably, the first folding hinge and the second folding hinge both include a first pin, a first folding hinge block, a torsion spring, and a second folding hinge block; the first folding hinge block and the second folding hinge block are connected in a matched mode through the first pin shaft, and the torsion spring is placed in the first folding hinge block and the second folding hinge block.
Compared with the prior art, the invention has the beneficial effects that: the invention utilizes the over-constrained rectangular pyramid deployable units to realize modular expansion, thereby being convenient for expanding the deployment area of the parabolic cylinder antenna; the modularization also reduces the production difficulty. 2, the overconstrained rectangular pyramid unit adopted by the invention has the characteristic of high rigidity, so that the rigidity of the antenna is greatly improved.
Drawings
Fig. 1 is a structural diagram of a fully folded state of the over-constrained rectangular-pyramid modular parabolic antenna deployable mechanism;
fig. 2 is a longitudinal unfolding structure diagram of the over-constrained rectangular-pyramid modular parabolic cylinder antenna unfolding mechanism;
fig. 3 is a structural diagram of a fully unfolded state of the over-constrained rectangular-pyramid modular parabolic antenna deployable mechanism;
fig. 4 is a fully folded structure diagram of the transverse folding and unfolding module of the overconstrained rectangular-pyramid modular parabolic cylinder antenna unfolding mechanism;
fig. 5 is a structural diagram of the over-constrained rectangular-pyramid modular parabolic cylinder antenna deployable mechanism in a fully deployed state of the transverse folding and unfolding module;
fig. 6 is a structural view of a unfolding state of a synchronous hinge of the unfolding mechanism of the over-constrained rectangular-pyramid modular parabolic cylinder antenna;
fig. 7 is a structural diagram of a locking structure of the over-constrained rectangular-pyramid modular parabolic antenna deployable mechanism;
fig. 8 is a block diagram of a first class of overconstrained rectangular-pyramid deployable mechanisms of the overconstrained rectangular-pyramid modular parabolic cylinder antenna deployable mechanism;
fig. 9 is a block diagram of a second type of overconstrained rectangular-pyramid deployable mechanism of the overconstrained rectangular-pyramid modular parabolic-cylindrical antenna deployable mechanism;
fig. 10 is a view of the folding hinge structure of the over-constrained rectangular pyramid deployable mechanism.
The figures in the drawings represent:
1-a first class of over-constrained rectangular pyramid deployable mechanism; 2-a second category of over-constrained rectangular pyramid deployable mechanisms; 3-longitudinal connecting hinges; 4-a locking device; 5-transversely folding and unfolding the module; 6-a synchronous hinge; 7-a first folding hinge; 8-a second folding hinge; 9-a first type of over-constrained rectangular pyramid deployable mechanism; 10-a first second type of over-constrained rectangular pyramid deployable mechanism; 11-a second type of over-constrained rectangular pyramid deployable mechanism; 12-a second first type of over-constrained rectangular pyramid deployable mechanism; 101-a first folding bar bottom hinge; 102-a first folding bar top hinge; 103-a first support bar top hinge; 104-a first support bar bottom hinge; 105-folding bar connection hinge; 106-second folding bar bottom hinge; 107-bottom folding bar; 108-top folding bar; 109-second folding bar top hinge; 110-a second support bar top hinge; 111-a second support bar bottom hinge; 112-bottom cross bar hinge; 201-a strut bar hinge; 202-bottom diagonal hinge; 203-support rods; 204-support bar connection hinge; 205-a first bottom synchronizing hinge; 206-a first bottom side rail; 207-second bottom synchronizing hinge; 208-a second bottom side rail; 209-bottom cross bar; 210-bottom diagonal; 211-bottom vertical bar hinge; 301-a first pin; 302-a first folding hinge block; 303-torsion spring; 304-a second folding hinge block; 305-a first shaft end retainer ring; 401-a base; 402-a spring; 403-a limit pin; 404-base cover; 405-a locking post; 501-conical top hinge; 502-synchronous joint closure; 503-connecting plate; 504-longitudinal connecting baffles; 505-longitudinal cylindrical half-toothed hinges; 601-a synchronization rod joint; 602-a synchronization link; 603-synchronous cylindrical gear joint; 604-a spiral spring; 605-a baffle; 606-a second pin; 607-shaft end retainer ring.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example one
As shown in fig. 1, 2 and 3, fig. 1 is a structural diagram of a fully folded state of the unfolding mechanism of the overconstrained rectangular-pyramid modular parabolic cylinder antenna; fig. 2 is a longitudinal unfolding structure diagram of the over-constrained rectangular-pyramid modular parabolic cylinder antenna unfolding mechanism; fig. 3 is a structural diagram of a fully unfolded state of the over-constrained rectangular-pyramid modular parabolic antenna deployable mechanism.
The unfolding mechanism of the over-constrained rectangular-pyramid modular parabolic cylinder antenna comprises a plurality of transverse folding and unfolding modules 5, wherein the adjacent transverse folding and unfolding modules 5 are connected through longitudinal connecting hinges 3 and locking devices 4, the adjacent transverse folding and unfolding modules 5 are folded or unfolded through the longitudinal connecting hinges 3, and the locking devices 4 are used for locking the unfolding states of the adjacent transverse folding and unfolding modules 5.
As shown in fig. 4 and 5, fig. 4 is a fully folded structure diagram of the over-constrained rectangular-pyramid modular parabolic cylinder antenna unfolding mechanism in the transverse folding module; fig. 5 is a structural diagram of the over-constrained rectangular-pyramid modular parabolic cylinder antenna deployable mechanism in a fully deployed state of the transverse folding module.
Longitudinal joint hinge 3 includes vertical cylinder half-tooth hinge 505 and longitudinal joint baffle 504, two vertical cylinder half-tooth hinge 505 rotates through the pivot respectively and sets up one longitudinal joint baffle 504's both ends, and same two on the longitudinal joint baffle 504 vertical cylinder half-tooth hinge 505 meshing connection, it is same two on the longitudinal joint baffle 504 vertical cylinder half-tooth hinge 505 is fixed respectively and is set up two adjacent transversely roll over exhibition module 5, through two the meshing of vertical cylinder half-tooth hinge 505 rotates, realizes adjacent two transversely roll over the expansion or the folding of exhibition module 5.
As shown in fig. 7, fig. 7 is a structural diagram of a locking structure of the over-constrained rectangular-pyramid modular parabolic antenna deployable mechanism. The locking device 4 comprises a base 401, a spring 402, a limit pin 403, a base cover 404 and a locking column 405, wherein the base 401 and the locking column 405 are respectively fixed on two adjacent transverse folding and unfolding modules 5, an axial insertion hole and a setting hole perpendicular to the insertion hole are formed in the base 401, the limit pin 403 and the spring 402 are symmetrically arranged on two sides of the insertion hole, the limit pin 403 and the spring 402 are matched with each other one by one and arranged in the setting hole, and the base cover 404 is detachably arranged on the base 401 to realize the opening and closing of the setting hole and facilitate the installation of the limit pin 403 and the spring 402.
The locking column 405 can be inserted into the insertion hole, a fixing hole is formed in the locking column 405, and the end of the limit pin 403 is arranged in the fixing hole under the elastic force of the spring 402, so that the relative position between the base 401 and the locking column 405 is locked.
The base cover 404 is rounded with respect to the through hole of the plug hole so that the locking stud 405 can easily enter the plug hole.
The locking device 4 is characterized in that inertia of the antenna when the antenna is longitudinally unfolded enables the locking column 405 to be clamped into the insertion hole of the base 401 and clamped into the insertion hole, and the limiting pin 403 can be clamped into the fixing hole of the locking column 405 to realize locking under the driving of elastic potential energy of the spring 402.
A limiting groove is formed in the inserting hole, a limiting ring is arranged on the limiting pin 403, the limiting ring and the spring 402 are arranged in the limiting groove, the spring 402 is sleeved on the limiting pin 403, one end of the spring 402 is arranged in contact with the limiting ring, the other end of the spring 402 is arranged in contact with the wall of the limiting groove, and the end of the limiting pin 403 extends into the inserting hole under the elastic action of the spring 402 by the limiting pin 403.
Example two
The transverse folding and unfolding module 5 comprises two first type over-constrained rectangular pyramid unfolding mechanisms 1 and two second type over-constrained rectangular pyramid unfolding mechanisms 2; specifically, the transverse folding and unfolding module 5 includes a first over-constrained rectangular pyramid unfolding mechanism 9 of a first kind, a first over-constrained rectangular pyramid unfolding mechanism 10 of a second kind, an over-constrained rectangular pyramid unfolding mechanism 11 of a second kind, and an over-constrained rectangular pyramid unfolding mechanism 12 of a second first kind.
The first type over-constrained rectangular pyramid deployable mechanism 9 is connected with the first second type over-constrained rectangular pyramid deployable mechanism 10 through a cone top hinge 501 and a synchronous joint baffle 502, and forms a certain angle; the first and second over-constrained rectangular pyramid deployable mechanisms 10 are connected with the second and second over-constrained rectangular pyramid deployable mechanisms 11 through synchronous hinges 6, and form a certain angle; the second over-constrained rectangular pyramid deployable mechanism 11 is connected with the second over-constrained rectangular pyramid deployable mechanism 12 through a cone top hinge 501 and a synchronous joint baffle 502, and also forms a certain angle; thereby realizing the unfolding or folding of the transverse folding and unfolding module 5.
EXAMPLE III
As shown in fig. 6, fig. 6 is a structural view of a unfolding state of a synchronous hinge of the unfolding mechanism of the over-constrained rectangular-pyramid modular parabolic cylinder antenna; the first and second types of over-constrained rectangular-pyramid deployable mechanisms 10 and 11 are connected by the synchronization hinge 6.
The synchronous hinge 6 comprises two synchronous rod joints 601, two synchronous connecting rods 602, two synchronous cylindrical gear joints 603, two volute springs 604, a baffle 605, two second pin shafts 606 and two second shaft end retaining rings 607, two ends of the synchronous connecting rods 602 are respectively connected with the synchronous rod joints 601 and the synchronous cylindrical gear joints 603, the two synchronous connecting rods 602 are respectively connected with the first and second over-constrained rectangular pyramid deployable mechanisms 10 and 11 through the synchronous rod joints 601, the two synchronous cylindrical gear joints 603 are in meshing connection, the synchronous cylindrical gear joints 603 are rotatably connected with the baffle 605 through the second pin shafts 606,
the spiral spring 604 is sleeved on the second pin shaft 606, and the second shaft end retainer 607 is used for limiting the axial position of the second pin shaft 606.
The two synchronization rods 602 are connected with the support rod hinge 201 through the synchronization rod joint 601 to realize the connection of the synchronization hinge between the two over-constrained rectangular pyramid deployable mechanisms 2 of the second type.
The synchronous hinge 6 is driven to rotate synchronously through the elastic potential energy of the spiral spring 604 installed in the synchronous cylindrical gear joint 603.
Example four
As shown in fig. 8 and 9, fig. 8 is a structural diagram of a first type of overconstrained rectangular-pyramid deployable mechanism of the overconstrained rectangular-pyramid modular parabolic cylinder antenna deployable mechanism; fig. 9 is a structural diagram of a second type of overconstrained rectangular-pyramid deployable mechanism of the overconstrained rectangular-pyramid modular parabolic cylinder antenna deployable mechanism.
The first type of over-constrained rectangular-pyramid deployable mechanisms 1 and the second type of over-constrained rectangular-pyramid deployable mechanisms 2 each include a first folding bar bottom hinge 101, a first folding hinge 7, a first folding bar top hinge 102, a folding bar connecting hinge 105, a second folding bar bottom hinge 106, two bottom folding bars 107, two top folding bars 108, a second folding hinge 8, a second folding bar top hinge 109, two bottom cross bar hinges 112, two bottom diagonal bar hinges 202, two support bars 203, a support bar connecting hinge 204, a first bottom synchronizing hinge 205, two first bottom longitudinal bars 206, a second bottom synchronizing hinge 207, a second bottom longitudinal bar 208, two bottom cross bars 209, a bottom diagonal bar 210, and a bottom longitudinal bar hinge 211.
The first type of over-constrained rectangular-pyramid deployable mechanism 1 includes a first support bar top hinge 103, a first support bar bottom hinge 104, a second support bar top hinge 110, and a second support bar bottom hinge 111.
The second type of over-constrained rectangular-pyramid deployable mechanism 2 includes a four-bar support hinge 201.
The two first bottom vertical bars 206 are connected by the bottom vertical bar hinge 211, the first bottom synchronous hinge 205 and the second bottom synchronous hinge 207, the two bottom transverse bars 209 are connected by the first bottom synchronous hinge 205, the second bottom synchronous hinge 207 and the two bottom transverse bar hinges 112, and the bottom inclined bars 210 are connected by the two bottom inclined bar hinges 202, so as to form a bottom quadrilateral frame of the first type of over-constrained rectangular pyramid deployable mechanism bottom 1 and the second type of over-constrained rectangular pyramid deployable mechanism 2.
A bottom folding bar 107 is connected with a top folding bar 108 through the first folding hinge 7 or the second folding hinge 8 to form two symmetrically arranged folding bars, wherein the two ends of one folding bar are respectively provided with the first folding bar bottom hinge 101 and the first folding bar top hinge 102, and the two ends of the other folding bar are respectively provided with the second folding bar bottom hinge 106 and the second folding bar top hinge 109, so as to form a folding triangular frame of the first type of over-constrained rectangular-pyramid deployable mechanism bottom 1 and the second type of over-constrained rectangular-pyramid deployable mechanism 2; the folding bar connecting hinge 105 connects the two top folding bars 108.
The two support rods 203 are symmetrically arranged, two ends of one support rod 203 are respectively provided with the first support rod top hinge 103 and the first support rod bottom hinge 104, two ends of the other support rod 203 are respectively provided with the second support rod top hinge 110 and the second support rod bottom hinge 111, so as to form a support triangular frame of the first-type over-constrained rectangular pyramid deployable mechanism 1, and the support rod connecting hinge 204 connects the two support rods 203.
The two support rods 203 are connected by four support rod hinges 201 and are symmetrically arranged to form a support triangular frame of the second type over-constrained rectangular pyramid deployable mechanism 2, and the support rod connecting hinge 204 connects the two support rods 203.
The folding triangular frame of the first type of overconstrained rectangular-pyramid deployable mechanism 1 is connected to the support triangular frame by the first folding bar top hinge 102, the second folding bar top hinge 109, the first support bar top hinge 103, and the second support bar top hinge 110.
The folding rod triangular frame of the second overconstrained rectangular pyramid deployable mechanism 2 is connected with the bottom quadrilateral frame.
The folding triangular frame of the second type of over-constrained rectangular pyramid deployable mechanism 2 is connected with the support bar triangular frame through the first folding bar top hinge 102, the second folding bar top hinge 109 and the two support bar hinges 201.
The first type of over-constrained rectangular pyramid deployable mechanism 1 is a single degree of freedom mechanism whose folding and unfolding motion is driven by torsion springs 303 in the first folding hinge 7 and the second folding hinge 8. The folding rod connecting hinge 105 and the supporting rod connecting hinge 204 in the first type of over-constrained rectangular-pyramid deployable mechanism 1 ensure that the two top folding rods 108 and the two supporting rods 203 of the first type of over-constrained rectangular-pyramid deployable mechanism 1 are synchronized during the folding and unfolding motion.
The second type of over-constrained rectangular pyramid deployable mechanism 2 is a single degree of freedom mechanism whose folding and unfolding motion is driven by torsion springs 303 in the first folding hinge 7 and the second folding hinge 8. The folding rod connecting hinge 105 and the supporting rod connecting hinge 204 in the second type of over-constrained rectangular-pyramid deployable mechanism 2 ensure that the two top folding rods 108 and the two supporting rods 203 of the second type of over-constrained rectangular-pyramid deployable mechanism 2 are synchronized during the folding and unfolding motion.
EXAMPLE five
As shown in fig. 10, fig. 10 is a view of the folding hinge structure of the over-constrained rectangular-pyramid deployable mechanism; the first folding hinge 7 and the second folding hinge 8 each include a first pin 301, a first folding hinge block 302, a torsion spring 303, a second folding hinge block 304, and a first axial end retainer 305.
The first folding hinge block 302 and the second folding hinge block 304 are connected with the first shaft end retaining ring 305 through the first pin 301 in a matching manner, and the torsion spring 303 is placed in the grooves of the first folding hinge block 302 and the second folding hinge block 304. The first folding hinge 7 and the second folding hinge 8 are driven by the elastic potential energy of the torsion spring 303.
The working principle is as follows:
the mechanism unfolding process can be divided into a transverse unfolding part and a longitudinal unfolding part, the longitudinal unfolding process is that a plurality of transverse folding and unfolding modules 5 complete folding and unfolding motion through the longitudinal cylindrical half-teeth 505, and in the folding and unfolding motion process, inertia is utilized to enable the locking device 4 to complete locking, and the plurality of transverse folding and unfolding modules are parallel in a longitudinal fully unfolded state.
The transverse unfolding process is driven by the synchronous hinge 6, the first folding hinge 7, the second folding hinge 8, the first bottom synchronous hinge 205 and the second bottom synchronous hinge 207, so that the four over-constrained rectangular pyramid unfolding modules complete folding and unfolding motions and are in parabolic cylinder curves.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be appreciated by those skilled in the art that many variations, modifications, and equivalents may be made thereto without departing from the spirit and scope of the invention as defined in the claims.
Claims (8)
1. An over-constrained rectangular-pyramid modular parabolic cylinder antenna unfolding mechanism is characterized by comprising a plurality of transverse folding and unfolding modules, wherein adjacent transverse folding and unfolding modules are connected through a longitudinal connecting hinge and a locking device, adjacent transverse folding and unfolding modules are folded or unfolded through the longitudinal connecting hinge, and the locking device is used for locking the unfolding state of the adjacent transverse folding and unfolding modules;
the longitudinal connecting hinges comprise longitudinal cylindrical half-tooth hinges and longitudinal connecting baffles, the two longitudinal cylindrical half-tooth hinges are respectively rotatably arranged at two ends of one longitudinal connecting baffle through rotating shafts, the two longitudinal cylindrical half-tooth hinges on the same longitudinal connecting baffle are meshed and connected, and the two longitudinal cylindrical half-tooth hinges on the same longitudinal connecting baffle are respectively fixedly arranged on the two adjacent transverse folding and unfolding modules;
the locking device comprises a base, springs, limiting pins and locking columns, wherein the base and the locking columns are respectively fixed on two adjacent transverse folding and unfolding modules, an axial insertion hole and a setting hole perpendicular to the insertion hole are formed in the base, the two limiting pins and the two springs are symmetrically arranged on two sides of the insertion hole, and the limiting pins and the springs are arranged in the setting hole in a one-to-one matching mode; the locking column can be inserted into the inserting hole and is provided with a fixing hole, and the end part of the limiting pin is arranged in the fixing hole under the action of the elastic force of the spring;
the transverse folding and unfolding module comprises a first over-constrained rectangular pyramid unfolding mechanism of a first kind, a first over-constrained rectangular pyramid unfolding mechanism of a second kind, a second over-constrained rectangular pyramid unfolding mechanism of a second kind and a second over-constrained rectangular pyramid unfolding mechanism of a first kind; the first type over-constrained rectangular pyramid deployable mechanism is connected with the first second type over-constrained rectangular pyramid deployable mechanism through a cone top hinge and a synchronous joint baffle, the first second type over-constrained rectangular pyramid deployable mechanism is connected with the second type over-constrained rectangular pyramid deployable mechanism through a synchronous hinge, and the second type over-constrained rectangular pyramid deployable mechanism is connected with the second first type over-constrained rectangular pyramid deployable mechanism through a cone top hinge and a synchronous joint baffle.
2. The overconstrained quadrangular pyramid modular parabolic cylinder antenna deployable mechanism according to claim 1, wherein the synchronization hinge comprises two synchronization rod joints, two synchronization links, two synchronization cylindrical gear joints, two volute springs, a baffle plate, and two second pins, wherein two ends of the synchronization links are respectively connected to the synchronization rod joints and the synchronization cylindrical gear joints, the two synchronization links are respectively connected to the first and second overconstrained quadrangular pyramid deployable mechanisms through the synchronization rod joints, the second and second overconstrained quadrangular pyramid deployable mechanisms are respectively connected to the two synchronization cylindrical gear joints, the two synchronization cylindrical gear joints are in meshing connection, the synchronization cylindrical gear joints are rotatably connected to the baffle plate through the second pins, and the volute springs are sleeved on the second pins.
3. The overconstrained quadrangular pyramid modular parabolic antenna deployable mechanism of claim 1, wherein the first overconstrained quadrangular pyramid deployable mechanism of the first type, the first overconstrained quadrangular pyramid deployable mechanism of the second type, the second overconstrained quadrangular pyramid deployable mechanism of the first type each comprise a base quadrangular frame, a folded triangular frame, and a supporting triangular frame, the base quadrangular frame being connected at opposite ends to the folded triangular frame and the supporting triangular frame, respectively, the folded triangular frame and the supporting triangular frame being rotationally connected.
4. The overconstrained quadrangular-pyramid modular parabolic antenna deployable mechanism of claim 3, wherein two first bottom vertical beams are connected by a bottom vertical beam hinge, a first bottom synchronous hinge, and a second bottom synchronous hinge, wherein two bottom horizontal beams are connected by the first bottom synchronous hinge, the second bottom synchronous hinge, and two bottom horizontal beams, and wherein bottom diagonal beams are connected by two bottom diagonal beam hinges, thereby forming the bottom quadrilateral frame.
5. The over-constrained quadrangular pyramid modular parabolic antenna deployable mechanism according to claim 3, wherein a bottom folding bar is connected to a top folding bar by a first folding hinge or a second folding hinge to form two symmetrically arranged folding bars, one of the folding bars has a first folding bar bottom hinge and a first folding bar top hinge at both ends thereof, respectively, and the other of the folding bars has a second folding bar bottom hinge and a second folding bar top hinge at both ends thereof, respectively, to form the foldable triangular frame; the folding rod is connected with the two top folding rods through a hinge.
6. The overconstrained quadrangular pyramid modular parabolic antenna deployable mechanism of claim 3, wherein two struts are symmetrically disposed, and wherein a first strut top hinge and a first strut bottom hinge are disposed at two ends of one strut, respectively, and a second strut top hinge and a second strut bottom hinge are disposed at two ends of the other strut, respectively, to form the triangular support frame of the overconstrained quadrangular pyramid deployable mechanism of the first type.
7. The over-constrained rectangular-pyramid modular parabolic antenna deployable mechanism of claim 3, wherein two support rods are hinged by four support rods and symmetrically placed to form a support triangular frame of the second type of over-constrained rectangular-pyramid deployable mechanism.
8. The over-constrained quad-pyramid modular parabolic dish antenna deployment mechanism of claim 5, wherein the first folding hinge and the second folding hinge each comprise a first pin, a first folding hinge, a torsion spring, a second folding hinge; the first folding hinge block and the second folding hinge block are connected in a matched mode through the first pin shaft, and the torsion spring is placed in the first folding hinge block and the second folding hinge block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302744.5A CN114039213B (en) | 2021-11-03 | 2021-11-03 | Over-constrained rectangular pyramid modular parabolic cylinder antenna deployable mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302744.5A CN114039213B (en) | 2021-11-03 | 2021-11-03 | Over-constrained rectangular pyramid modular parabolic cylinder antenna deployable mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114039213A CN114039213A (en) | 2022-02-11 |
| CN114039213B true CN114039213B (en) | 2022-06-24 |
Family
ID=80136372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111302744.5A Active CN114039213B (en) | 2021-11-03 | 2021-11-03 | Over-constrained rectangular pyramid modular parabolic cylinder antenna deployable mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114039213B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009278B (en) * | 2014-06-09 | 2016-08-24 | 哈尔滨工业大学 | A kind of modular space parabolic cylinder folding exhibition antenna mechanism |
| GB201520187D0 (en) * | 2015-11-16 | 2015-12-30 | Oxford Space Systems Ltd | Hinge |
| CN106410362A (en) * | 2016-11-09 | 2017-02-15 | 上海卫星工程研究所 | Stretching forming mechanism of parabolic cylinder |
| US10707552B2 (en) * | 2018-08-21 | 2020-07-07 | Eagle Technology, Llc | Folded rib truss structure for reflector antenna with zero over stretch |
| CN111430876B (en) * | 2020-04-16 | 2022-05-03 | 安徽大学 | Multi-superelastic hinge parabolic cylinder antenna deployable mechanism |
| CN112436261B (en) * | 2020-11-04 | 2021-07-02 | 安徽大学 | Modular parabolic cylinder film antenna deployable mechanism driven by super-elastic M-shaped rod |
| CN112414484A (en) * | 2020-11-18 | 2021-02-26 | 陕西诺盈自动化仪表有限公司 | Ultrasonic flowmeter convenient to installation |
-
2021
- 2021-11-03 CN CN202111302744.5A patent/CN114039213B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114039213A (en) | 2022-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107933959B (en) | Six-rod mechanism and expandable module, extension arm and plane expansion truss formed by six-rod mechanism | |
| CN108649313B (en) | deployable curved surface truss mechanism based on rigid-flexible mixed shear fork mechanism | |
| US9249565B2 (en) | Deployable truss with orthogonally-hinged primary chords | |
| CN102173312B (en) | Large spatial assembly type antenna reflector modular unit and assembly method thereof | |
| CN110828964B (en) | Torsion spring driven single-layer regular hexagon conical deployable truss antenna structure | |
| US20020063660A1 (en) | Lightweight, compactly deployable support structure with telescoping members | |
| CN110120575B (en) | Expandable parabolic cylinder antenna based on hinged rib structure | |
| CN109659661A (en) | A kind of rope bar stretching type annular deployable antenna mechanism | |
| CN106058415A (en) | Scissors type hexagonal-prism-shaped extensible unit and space extensible mechanism formed by the same | |
| CN114566781B (en) | Coupling rod-containing expandable unit and spatial expandable mechanism derived from same | |
| CN111509358A (en) | Single-degree-of-freedom panel antenna folding and unfolding unit and panel antenna folding and unfolding mechanism | |
| CN106314826B (en) | Torsional spring drives scissor-type extending arm | |
| CN114039213B (en) | Over-constrained rectangular pyramid modular parabolic cylinder antenna deployable mechanism | |
| CN111430876B (en) | Multi-superelastic hinge parabolic cylinder antenna deployable mechanism | |
| CN110217408B (en) | Novel plane expandable structure | |
| CN113258249B (en) | On-orbit ultra-large deployable space structure system | |
| CN111641020A (en) | Deployable mechanism of triangular prism unit modular planar antenna | |
| JP2011121416A (en) | Deployment structure body | |
| CN111934098B (en) | Annular deployable antenna truss based on bennett mechanism | |
| CN110970701A (en) | Conical single-layer annular truss deployable antenna mechanism driven by torsion spring | |
| CN111864393B (en) | High-storage-ratio annular expandable mesh antenna | |
| JPH02283597A (en) | Expanding truss structure and expansion synchronizer therefor | |
| JP3717035B2 (en) | Expandable frame structure | |
| CN216128456U (en) | Large-space-tolerance dragging-unfolding type stretching arm | |
| CN118387318B (en) | Flat-plate array type thin-film spacecraft and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |