CN114094305A

CN114094305A - Installation method of foldable parabolic cylinder antenna

Info

Publication number: CN114094305A
Application number: CN202111519432.XA
Authority: CN
Inventors: 黄龙; 曾鹏; 杨远汉; 尹来容; 李河舟
Original assignee: Changsha University of Science and Technology
Current assignee: Changsha University of Science and Technology
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-02-25

Abstract

A mounting method of a foldable parabolic cylinder antenna, wherein the parabolic cylinder antenna comprises a main body part, a reflecting film and a supporting device; the main body part is formed by combining a plurality of extensible units; the deployable unit comprises a first isosceles trapezoid, a second isosceles trapezoid, a first right-angle trapezoid, a second right-angle trapezoid, a third isosceles trapezoid, a fourth isosceles trapezoid, a first rectangular piece, a second rectangular piece, a first hinge, a second hinge, a third hinge and a fourth hinge; the two expandable units are used for obtaining a parabolic cylinder expandable mechanism with the layer number of 1 in a component sharing mode; the parabolic cylinder extensible mechanisms with the number of layers of 1 are sequentially connected through a fifth hinge to obtain the main body part; the supporting device connects the main body part and the reflecting film; the installation method comprises a building method and a fastening method.

Description

Installation method of foldable parabolic cylinder antenna

Technical Field

The invention relates to the field of deployable mechanisms, in particular to a mounting method of a deployable parabolic cylinder antenna.

Background

The deployable mechanism originally appeared in the sixties of the last century, as a novel space structure, the deployable mechanism is deployed when in use and can be folded and retracted when not in use. When the structure is folded, the structure is folded in a certain specific shape, and is gradually unfolded under the action of an external driving force to achieve a completely unfolded working state, and then the structure is locked in a stable state. In recent years, deployable mechanisms have been applied to various engineering fields from umbrellas, retractable roofs, to deployable antennas at space stations, and spacecraft solar panels. The deployable mechanisms are typically of modular design, i.e. the mechanism is made available by an array of deployable modules, which are made as a deployable unit.

There are two main types of deployable units at present: one is the earlier researched shear hinge unit, which belongs to a rigid member unit; another type is a unit consisting of a rigid rod and a flexible cable, where the cable plays a stabilizing role, and in a tension integrated unit, the cable is under tension after deployment. The scissor hinge units have a large folding-to-spreading ratio, but it is difficult to combine the scissor hinge units to obtain a specific developable curved surface. The expandable unit composed of the rigid rod and the flexible cable is stable in structure, the rigidity of the combined mechanism is good, and the unit is complex to connect with the unit.

The prior art has the following defects.

1. The deployable antenna in the prior art is often obtained by hinging two ends of a rod piece, the overall rigidity of the deployable mechanism formed by combining the deployable units is poor, and if the rigidity is improved by increasing the sizes of the rod piece and the hinge, part of the folding and unfolding ratio and the portability are lost, so that the practicability of the mechanism is limited.

2. The expandable antenna in the prior art usually needs a plurality of expanding steps, and the expanding and folding processes are complicated.

3. The deployable antenna in the prior art is often obtained by connecting more rods, and although a larger folding-unfolding ratio can be realized, the deployable antenna is easy to be folded wrongly.

4. The deployable units of the prior art are often obtained from a single type of rod connection, the deployable mechanisms resulting from the combination thereof being relatively structurally and functionally unitary and weakened.

5. When the deployable units in the prior art are stored, the rods are often distributed in a scattered manner, so that the space utilization rate is insufficient, and the storage performance is not strong.

6. The deployable units in the prior art are often formed by combining straight rods, and are not easy to combine into a deployable curved surface.

Disclosure of Invention

In order to overcome the problems, the invention provides a scheme for simultaneously solving the problems; the technical scheme adopted by the invention for solving the technical problems is as follows: a mounting method of a foldable parabolic cylinder antenna; the parabolic cylinder antenna comprises a main body part, a reflecting film and a supporting device; the main body part is used for folding and unfolding the parabolic cylinder antenna, the reflecting film is used for signal reflection of the parabolic cylinder antenna, and the supporting device is used for connecting the reflecting film and the main body part; the installation method comprises a building method and a fastening method.

The main body part is formed by combining a plurality of expandable units, the expandable units are of bilateral symmetry structures and comprise a first isosceles trapezoid, a second isosceles trapezoid, a first right-angle trapezoid, a second right-angle trapezoid, a third isosceles trapezoid, a fourth isosceles trapezoid, a first rectangular part, a second rectangular part, a first hinge, a second hinge, a third hinge and a fourth hinge; the first hinge connects the first isosceles trapezoid and the second isosceles trapezoid, and the first isosceles trapezoid and the second isosceles trapezoid are symmetrically arranged about the first hinge; the second hinge connects the first right angle ladder and the second right angle ladder, and the first right angle ladder and the second right angle ladder are symmetrically arranged about the second hinge; the third hinge connects the third and fourth isosceles ladders, and the third and fourth isosceles ladders are symmetrically arranged about the third hinge; the fourth hinge connects the first rectangular piece and the second rectangular piece, and the first rectangular piece and the second rectangular piece are symmetrically arranged about the fourth hinge.

First isosceles trapezoid is isosceles trapezoid, is provided with 6 articulated ear seats, wherein 6 the axis of articulated ear seat is in the coplanar.

First right-angle trapezoidal piece is right trapezoid, is provided with 12 articulated ear seat, wherein is located at the bottom of first right-angle trapezoidal piece and two waist department the axis of articulated ear seat is in the coplanar, the waist department that first right-angle trapezoidal piece inclines articulated ear seat with a waist department of first class waist trapezoidal piece articulated ear seat forms to rotate through the round pin axle and connects, first right-angle trapezoidal piece can rotate clockwise and be close to first class waist trapezoidal piece.

The third isosceles trapezoid is isosceles trapezoid, 8 hinged ear seats are arranged, the axis of the hinged ear seats is positioned at the lower bottom and two waists of the third isosceles trapezoid, the hinged ear seats at one waist of the third isosceles trapezoid and the hinged ear seats at the vertical waist of the first right-angle trapezoid form a rotating connection through the pin shaft, and the third isosceles trapezoid can rotate clockwise to be close to the first right-angle trapezoid.

First rectangle piece is the rectangle, is provided with 6 articulated ear seat, wherein is located first rectangle piece long limit and broadside department the axis of articulated ear seat is in the coplanar, first rectangle piece long limit department articulated ear seat with another waist department of waist trapezoidal piece such as third articulated ear seat passes through the round pin axle forms and rotates the connection, but first rectangle piece clockwise rotation is close to waist trapezoidal piece such as third.

First hinge is the rectangle, is provided with 8 articulated ear seat, wherein 8 the axis of articulated ear seat is in the coplanar, first hinge long limit department articulated ear seat with first class waist trapezoidal piece lower floor department articulated ear seat passes through the round pin axle forms to rotate and connects, first hinge can clockwise rotate and be close to first class waist trapezoidal piece.

The second hinge is the rectangle, is provided with 2 articulated ear seat, wherein 2 articulated ear seat axis is in the coplanar, the long limit department of second hinge articulated ear seat with first right angle trapezoidal piece upper base department articulated ear seat passes through the round pin axle forms to rotate and connects, the second hinge can be close to counterclockwise first right angle trapezoidal piece.

The third hinge is connected with the hinge lug seat at the lower bottom of the third isosceles trapezoid part through the hinge pin in the long edge of the third hinge in a rotating mode, and the third hinge can rotate anticlockwise to be close to the third isosceles trapezoid part.

The fourth hinge is connected with the hinged lug seat at one wide edge of the first rectangular piece in a rotating mode through the pin shaft, and the fourth hinge can rotate counterclockwise to be close to the first rectangular piece.

The waist trapezoidal piece such as second is provided with 6 articulated ear seat, wherein 6 the axis of articulated ear seat is in the coplanar, waist trapezoidal piece such as second lower bottom department articulated ear seat with another long limit department of first hinge articulated ear seat passes through the round pin axle forms the rotation and connects, but isosceles trapezoidal piece clockwise rotation of second is close to first hinge.

The second right-angle trapezoidal part is in a right-angle trapezoid shape and is provided with 12 hinged lug seats, wherein the axes of the hinged lug seats positioned at the upper bottom and two waists of the right-angle trapezoidal part are positioned on the same plane, the hinged lug seats positioned at the upper bottom of the second right-angle trapezoidal part and the hinged lug seats positioned at the other long edge of the second hinge are in rotating connection through the pin shaft, the hinged lug seats positioned at the inclined waists of the second right-angle trapezoidal part and the hinged lug seats positioned at the waist of the second isosceles trapezoidal part are in rotating connection through the pin shaft, and the second right-angle trapezoidal part can rotate counterclockwise to be close to the second hinge and the second isosceles trapezoidal part.

Bottom department under waist trapezoidal piece such as fourth articulated ear seat with another long limit department of third hinge articulated ear seat passes through the round pin axle forms to rotate and connects, waist trapezoidal piece such as fourth waist department articulated ear seat with the vertical waist department of second right angle trapezoidal piece articulated ear seat passes through the round pin axle forms to rotate and connects, waist trapezoidal piece such as fourth can be close to with the anticlockwise rotation third hinge and second right angle trapezoidal piece.

Second rectangle piece is the rectangle, is provided with 6 articulated ear seat, wherein is located second rectangle piece long limit and broadside department the axis of articulated ear seat is in the coplanar, a broadside department of second rectangle piece articulated ear seat with another long limit department of fourth hinge articulated ear seat passes through the round pin axle forms and rotates the connection, the long limit department of second rectangle piece articulated ear seat with another waist department of waist trapezoidal piece such as fourth articulated ear seat passes through the round pin axle forms and rotates the connection, second rectangle piece can be close to counterclockwise the fourth hinge with waist trapezoidal piece such as fourth.

The axis of the first isosceles trapezoid and the axis of the first hinge are rotationally connected, and the axis of the first isosceles trapezoid and the axis of the first right-angle trapezoid and the axis of the second hinge are rotationally connected to intersect at a point; the axis of the first right-angle trapezoid is rotationally connected with the second hinge, and the axis of the first right-angle trapezoid is rotationally connected with the third isosceles trapezoid and the axis of the third isosceles trapezoid is rotationally connected with the third hinge at a point; the third isosceles trapezoid and the third hinge are rotatably connected with each other through an axis, and the axis rotatably connected with the first rectangular piece through the third isosceles trapezoid and the axis rotatably connected with the fourth hinge through the first rectangular piece are intersected at one point.

The two expandable units are mutually connected in a mode of sharing a component to obtain a parabolic cylinder expandable mechanism with the layer number of 1; wherein the common member comprises: the first isosceles trapezoid, the first hinge, and the second isosceles trapezoid; the parabolic cylinder developable mechanism with the layer number of 1 obtained by combining the two developable units is of a double-symmetrical structure; the parabolic cylinder extensible mechanisms with the number of layers of 1 are sequentially connected through a fifth hinge and combined to obtain the main body part; wherein, the fifth hinge is the rectangle, is provided with 2 articulated ear seat, 2 in the fifth hinge articulated ear seat axis is in the coplanar.

A first end rectangular plate, a second end rectangular plate and a third end rectangular plate are arranged at the left end and the right end of the main body part; the hinge lug seat at the long edge of the first end part rectangular plate is rotationally connected with the hinge lug seat at one wide edge of the second rectangular piece through the pin shaft, and the hinge lug seat at the wide edge of the first end part rectangular plate is rotationally connected with the hinge lug seat at one wide edge of the second end part rectangular plate through the pin shaft; the hinge lug seat at the long edge of the second end rectangular plate and the hinge lug seat at the upper bottom of the second isosceles trapezoid form a rotary connection through the pin shaft, and the hinge lug seat at the wide edge of the second end rectangular plate and the hinge lug seat at the wide edge of the third end rectangular plate form a rotary connection through the pin shaft; the hinge lug seat on the long edge of the third end rectangular plate is rotatably connected with the hinge lug seat on the upper bottom of the second right-angle trapezoidal piece through the pin shaft.

When the main body part is unfolded, the first isosceles trapezoid and the second isosceles trapezoid rotate around the first hinge and are axially away from each other, the first right-angle trapezoid and the second right-angle trapezoid rotate around the second hinge and are axially away from each other, the third isosceles trapezoid and the fourth isosceles trapezoid rotate around the third hinge and are axially away from each other, and the first rectangular element and the second rectangular element rotate around the fourth hinge and are axially away from each other; at the same time, two of the deployable units on the same level will rotate around the first isosceles trapezoid and the second isosceles trapezoid and be radially distanced from each other; the mutual distancing takes place synchronously; finally, the main body part is unfolded from the square-like folded state to a parabolic cylindrical state; the unfolding of the body portion is a single degree of freedom motion.

The reflecting film is fixed on the main body part through the supporting device; the supporting device comprises a supporting framework, a supporting rod, an upper adjusting nut and a lower adjusting nut; the supporting framework is a high-toughness metal wire, is fixed in the hole at the end part of the supporting rod, is fixedly connected with the reflecting film and is used for supporting the reflecting film; the supporting rod is matched with the upper adjusting nut and the lower adjusting nut and is used for adjusting the position of the part of the reflecting film; the supporting rod is provided with a guide protrusion matched with the guide groove in the main body part, so that the supporting rod is prevented from rotating circumferentially when the height of the supporting rod is adjusted.

When the main body part is completely unfolded, the end parts of the supporting rods are all positioned on the same parabolic cylinder through fine adjustment, and at the moment, the reflecting film forms a parabolic cylinder; when the main body part is folded, the supporting framework bends along with the movement of the supporting rod, and at the moment, the reflecting film is gathered in the main body part along with the bending of the supporting framework.

The building method comprises the following steps: fixing the upper bottom of the second isosceles trapezoid in the deployable cell at the end of the deployable parabolic cylinder antenna, and applying an axial driving force F at the other end of the deployable parabolic cylinder antenna; in the deployable unit, the first isosceles trapezoid and the second isosceles trapezoid rotate around the first hinge and are axially away from each other, the first right-angle trapezoid and the second right-angle trapezoid rotate around the second hinge and are axially away from each other, the third isosceles trapezoid and the fourth isosceles trapezoid rotate around the first hinge and are axially away from each other, and the first rectangular element and the second rectangular element rotate around the first hinge and are axially away from each other; meanwhile, two deployable units in the same layer in the parabolic cylinder deployable mechanism rotate around the first isosceles trapezoid and the second isosceles trapezoid and are radially far away from each other; the mutual distancing takes place synchronously.

The arrangement of the fifth hinge at the interlayer of the main body part enables all the deployable units in the parabolic cylinder deployable mechanism to realize a uniform motion mode; until the main body part is completely unfolded from the square-like structure, forming the parabolic cylinder structure; the reflective film is also stretched to form the desired parabolic reflecting surface.

Finally, the precision of the parabolic reflecting surface is further fine-tuned by manually rotating the upper and lower adjusting nuts in the support device.

The fastening method comprises the following steps: after the main body part is completely unfolded, clamping one end of a fixed supporting rod into a stud structure at the upper bottom of the second isosceles trapezoid in the extensible unit at the end part of the extensible parabolic cylinder antenna, and fixing one end of the fixed supporting rod on the stud structure by using a fixing nut; then, the other end of the fixed supporting rod is clamped into the stud structure at the upper bottom of the first isosceles trapezoid in the deployable unit at the other end of the deployable parabolic cylinder antenna, and the other end of the fixed supporting rod is fixed on the stud structure by using the fixing nut, so that the axial length of the main body part of the parabolic cylinder antenna is ensured to be unchanged.

Further, the first isosceles trapezoid, the second isosceles trapezoid, the first right-angle trapezoid, the second right-angle trapezoid, the third isosceles trapezoid, the fourth isosceles trapezoid, the first rectangular part and the second rectangular part are all integrated members.

Further, the first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge, the first end rectangular plate, the second end rectangular plate and the third end rectangular plate are all provided with a supporting device.

Further, the reflective film is a polyester film.

Furthermore, articulated ear seat is cylindricly, and its center department has all set up and has held the through-hole structure of round pin axle.

Further, 45-degree chamfered structures are arranged at the bottom edges of the first isosceles trapezoid and the second isosceles trapezoid so as to eliminate interference between members when the main body part is folded.

Further, the first isosceles trapezoid and the second isosceles trapezoid are identical in structure.

Further, the third isosceles trapezoid and the fourth isosceles trapezoid are identical in structure.

The present invention has the following advantageous effects.

1. Aiming at the defects 1 of the prior art described in the background art, the main body part of the deployable parabolic cylinder antenna designed by the invention is obtained by hinging an integrated component, the hinged position is positioned at the side edge of the component, and the components are mutually connected to form a net structure, so that the rigidity of the antenna is greatly improved, and the practicability of the antenna is improved.

2. Aiming at the deficiency 2 of the prior art described in the background technology, the deployable parabolic cylinder antenna designed by the invention realizes radial deployment while axial deployment, and the deployment and the furling are single-degree-of-freedom motion; meanwhile, the reflecting film of the antenna is fixed on the main body part through the supporting device, so that the unfolding and folding processes of the antenna are effectively simplified, and the deployment and folding efficiency of the antenna is greatly improved.

3. Aiming at the deficiency 3 of the prior art described in the background art, the expandable parabolic cylinder antenna designed by the invention has fewer main body parts, and all the parts are connected in parallel, so that the expansion and folding processes are stable. The wrong folding is not easy to occur.

4. Aiming at the deficiency 4 of the prior art described in the background art, the main body part of the deployable parabolic cylinder antenna designed by the invention is obtained by connecting different components, and parabolic cylinders with different parameters can be obtained by changing the geometric parameters of the components.

5. Aiming at the deficiency 5 of the prior art described in the background art, the main body part of the deployable parabolic cylinder antenna designed by the invention adopts integrated components, the components are distributed symmetrically, and the components are distributed orderly and compactly when the mechanism is stored, so that the deployable parabolic cylinder antenna has high storage performance.

6. Aiming at the deficiency 6 of the prior art described in the background art, the main body part of the developable parabolic cylinder antenna designed by the invention enables a plurality of different plane components to be combined to obtain the developable surface by setting a special hinge arrangement mode, and obtains different parabolic cylinder developable mechanisms by changing the geometric parameters of the components.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of a deployable unit of the present invention.

Fig. 2 is a schematic view of the deployable unit of the present invention in a fully deployed state.

Fig. 3 is a schematic view of the foldable unit of the present invention in a fully folded state.

Fig. 4 is a schematic view of the hinge between the hinge lugs at I of the present invention.

Fig. 5 is a schematic view of the support device of the present invention.

Fig. 6 is a schematic view of a fastening place in the present invention.

Fig. 7 is a schematic diagram of the deployable parabolic dish antenna of the present invention in a fully collapsed state.

Fig. 8 is a schematic diagram of the deployable parabolic dish antenna of the present invention in a fully deployed state.

In the figure: 101-first isosceles trapezoid 102-second isosceles trapezoid 201-first right-angle trapezoid 202-second right-angle trapezoid 111-third isosceles trapezoid 112-fourth isosceles trapezoid 301-first rectangular component 302-second rectangular component 401-first hinge 402-second hinge 403-third hinge 404-fourth hinge 405-fifth hinge 501-first end rectangular plate 502-second end rectangular plate 503-third end rectangular plate 601-support frame 602-strut 603-upper adjusting nut 604-lower adjusting nut 701-hinge lug 702-pin 703-guide groove 704-guide protrusion 705-fixed support rod 706-stud structure 707-fixed nut 801-reflective film.

Detailed Description

The invention provides a mounting method of a foldable parabolic cylinder antenna; as shown, the parabolic dish antenna includes a main body portion, a reflective film 801, and a support means; the main body part is used for folding and unfolding the parabolic cylinder antenna, the reflecting film 801 is used for signal reflection of the parabolic cylinder antenna, and the supporting device is used for connecting the reflecting film 801 and the main body part; the installation method comprises a building method and a fastening method.

The main body part is formed by combining a plurality of extensible units; as shown in the figure, the deployable unit is of a bilateral symmetry structure and is composed of a first isosceles trapezoid 101, a second isosceles trapezoid 102, a first right-angle trapezoid 201, a second right-angle trapezoid 202, a third isosceles trapezoid 111, a fourth isosceles trapezoid 112, a first rectangular part 301, a second rectangular part 302, a first hinge 401, a second hinge 402, a third hinge 403 and a fourth hinge 404; the first hinge 401 connects the first isosceles trapezoid 101 and the second isosceles trapezoid 102, and the first isosceles trapezoid 101 and the second isosceles trapezoid 102 are symmetrically arranged about the first hinge 401; the second hinge 402 connects the first right angle ladder 201 and the second right angle ladder 202, and the first right angle ladder 201 and the second right angle ladder 202 are symmetrically arranged about the second hinge 402; the third hinge 403 connects the third waisted ladder 111 and the fourth waisted ladder 112, and the third waisted ladder 111 and the fourth waisted ladder 112 are symmetrically arranged about the third hinge 403; the fourth hinge 404 connects the first rectangular member 301 and the second rectangular member 302, and the first rectangular member 301 and the second rectangular member 302 are arranged symmetrically with respect to the fourth hinge 404.

As shown, the first isosceles trapezoid 101 is shaped like an isosceles trapezoid, and is provided with 6 hinge ear seats 701, wherein the axes of the 6 hinge ear seats 701 are in the same plane.

First right angle ladder 201 is right trapezoid, is provided with 12 articulated ear seat 701, wherein is located first right angle ladder 201 is gone up the end and two waists department the axis of articulated ear seat 701 is in the coplanar, first right angle ladder 201 slope waist department articulated ear seat 701 with first class waist ladder 101 a waist department articulated ear seat 701 forms the rotation through round pin axle 702 and connects, first right angle ladder 201 can rotate clockwise and be close to first class waist ladder 101.

The third isosceles trapezoid-shaped part 111 is in an isosceles trapezoid shape and is provided with 8 hinge lug seats 701, wherein the axes of the hinge lug seats 701, which are located at the lower bottom and two waists of the third isosceles trapezoid-shaped part 111, are located on the same plane, the hinge lug seat 701 at one waist of the third isosceles trapezoid-shaped part 111 is rotatably connected with the hinge lug seat 701 at the vertical waist of the first right-angle trapezoid-shaped part 201 through the pin shaft 702, and the third isosceles trapezoid-shaped part 111 can rotate clockwise to be close to the first right-angle trapezoid-shaped part 201.

First rectangle piece 301 is the rectangle, is provided with 6 articulated ear seat 701, wherein is located first rectangle piece 301 long limit and broadside department the axis of articulated ear seat 701 is in the coplanar, first rectangle piece 301 long limit department articulated ear seat 701 with another waist department of waist trapezoidal piece 111 such as the third articulated ear seat 701 passes through round pin axle 702 forms the rotation and connects, but first rectangle piece 301 clockwise turning is close to waist trapezoidal piece 111 such as the third.

First hinge 401 is the rectangle, is provided with 8 articulated ear seat 701, 8 wherein the axis of articulated ear seat 701 is in the coplanar, the long limit department of first hinge 401 articulated ear seat 701 with first class waist ladder 101 lower base department articulated ear seat 701 passes through round pin axle 702 forms the rotation and connects, but first hinge 401 clockwise turning is close to first class waist ladder 101.

Second hinge 402 is the rectangle, is provided with 2 articulated ear seat 701, 2 wherein articulated ear seat 701 axis is in the coplanar, the long limit department of second hinge 402 articulated ear seat 701 with first right angle ladder 201 upper base department articulated ear seat 701 passes through round pin axle 702 forms the rotation and connects, second hinge 402 can be close to with the anticlockwise rotation first right angle ladder 201.

The third hinge 403 is rotatably connected with the hinge lug seat 701 at the lower bottom of the third isosceles trapezoid 111 through the pin 702 through the hinge lug seat 701 at the long side of the third hinge 403, and the third hinge 403 can rotate counterclockwise to be close to the third isosceles trapezoid 111.

The fourth hinge 404 is rotatably connected to the hinge ear seat 701 at one long side of the fourth hinge 404 and the hinge ear seat 701 at one wide side of the first rectangular component 301 through the pin 702, and the fourth hinge 404 can rotate counterclockwise to be close to the first rectangular component 301.

The second isosceles trapezoid 102 is provided with 6 hinge ear seats 701, wherein the axes of the 6 hinge ear seats 701 are located on the same plane, the hinge ear seat 701 at the lower bottom of the second isosceles trapezoid 102 and the hinge ear seat 701 at the other long side of the first hinge 401 form a rotating connection through the pin 702, and the second isosceles trapezoid 102 can rotate clockwise to be close to the first hinge 401.

The second right-angle trapezoid 202 is in a right-angle trapezoid shape and is provided with 12 hinge ear seats 701, wherein the axes of the hinge ear seats 701 at the upper bottom and two waists of the right-angle trapezoid are located on the same plane, the hinge ear seat 701 at the upper bottom of the second right-angle trapezoid 202 and the hinge ear seat 701 on the other long side of the second hinge 402 form a rotational connection through the pin 702, the hinge ear seat 701 at the inclined waist of the second right-angle trapezoid 202 and the hinge ear seat 701 at the waist of the second isosceles trapezoid 102 form a rotational connection through the pin 702, and the second right-angle trapezoid 202 can rotate counterclockwise to be close to the second hinge 402 and the second isosceles trapezoid 102.

The hinge lug seat 701 at the lower bottom of the fourth isosceles trapezoid 112 and the hinge lug seat 701 at the other long edge of the third hinge 403 are rotatably connected through the pin shaft 702, the hinge lug seat 701 at the waist of the fourth isosceles trapezoid 112 and the hinge lug seat 701 at the vertical waist of the second right-angle trapezoid 202 are rotatably connected through the pin shaft 702, and the fourth isosceles trapezoid 112 is counterclockwise rotatable and close to the third hinge 403 and the second right-angle trapezoid 202.

Second rectangle piece 302 is the rectangle, is provided with 6 articulated ear seat 701, wherein is located second rectangle piece 302 long limit and broadside department the axis of articulated ear seat 701 is in the coplanar, second rectangle piece 302 broadside department articulated ear seat 701 with another long limit department of fourth hinge 404 articulated ear seat 701 passes through round pin axle 702 forms to rotate and connects, second rectangle piece 302 long limit department articulated ear seat 701 with another waist department of waist trapezoidal piece 112 such as fourth articulated ear seat 701 passes through round pin axle 702 forms to rotate and connects, second rectangle piece 302 can be close to counterclockwise rotation fourth hinge 404 with waist trapezoidal piece 112 such as fourth.

As shown, the axis of the first isosceles trapezoid 101 rotatably connected to the first hinge 401, the axis of the first isosceles trapezoid 101 rotatably connected to the first right-angle trapezoid 201 and the axis of the first right-angle trapezoid 201 rotatably connected to the second hinge 402 intersect at a point; the axis of the first right-angle trapezoid 201 rotationally connected with the second hinge 402 intersects with the axis of the third isosceles trapezoid 111 rotationally connected with the third hinge 403 at a point; the axis of the third isosceles trapezoid 111 rotatably connected to the third hinge 403 intersects with the axis of the first rectangular member 301 rotatably connected to the fourth hinge 404 at a point.

As shown in the figure, two deployable units are connected with each other in a manner of sharing a component to obtain a parabolic cylinder deployable mechanism with the number of layers being 1; wherein the common member comprises: the first isosceles trapezoid 101, the first hinge 401, and the second isosceles trapezoid 102; the parabolic cylinder developable mechanism with the layer number of 1 obtained by combining the two developable units is of a double-symmetrical structure; the plurality of parabolic cylinder deployable mechanisms with the number of layers of 1 are sequentially connected through a fifth hinge 405 and combined to obtain the main body part; the fifth hinge is rectangular and is provided with 2 hinge ear seats 701, and the axes of the hinge ear seats 701 are on the same plane in the fifth hinge.

As shown in the drawing, at both left and right ends of the main body portion, a first end rectangular plate 501, a second end rectangular plate 502, and a third end rectangular plate 503 are mounted; the hinge lug seat 701 on the long side of the first end rectangular plate 501 and the hinge lug seat 701 on one wide side of the second rectangular member 302 form a rotary connection through the pin 702, and the hinge lug seat 701 on the wide side of the first end rectangular plate 501 and the hinge lug seat 701 on one wide side of the second end rectangular plate 502 form a rotary connection through the pin 702; the hinge lug seat 701 at the long side of the second end rectangular plate 502 and the hinge lug seat 701 at the upper bottom of the second isosceles trapezoid 112 form a rotary connection through the pin 702, and the hinge lug seat 701 at the wide side of the second end rectangular plate 502 and the hinge lug seat 701 at the wide side of the third end rectangular plate 503 form a rotary connection through the pin 702; the hinge lug 701 on the long side of the third end rectangular plate 503 is rotatably connected with the hinge lug 701 on the bottom of the second right-angle trapezoid 202 through the pin 702.

When the body portion is unfolded, the first isosceles trapezoid 101 and the second isosceles trapezoid 102 rotate around the first hinge 401 and are axially away from each other, the first right-angle trapezoid 201 and the second right-angle trapezoid 202 rotate around the second hinge 402 and are axially away from each other, the third isosceles trapezoid 111 and the fourth isosceles trapezoid 112 rotate around the third hinge 403 and are axially away from each other, and the first rectangular member 301 and the second rectangular member 302 rotate around the fourth hinge 404 and are axially away from each other; at the same time, the two deployable units on the same level will rotate around the first isosceles trapezoid 101 and the second isosceles trapezoid 102 and move radially away from each other; the mutual distancing takes place synchronously; finally, the main body part is unfolded from the square-like folded state to a parabolic cylindrical state; the unfolding of the body portion is a single degree of freedom motion.

As shown, the reflective film 801 is fixed on the body portion by the supporting means; the supporting device comprises a supporting framework 601, a supporting rod 602, an upper adjusting nut 603 and a lower adjusting nut 604; the supporting framework 601 is a high-toughness metal wire, fixed in the end hole of the strut 602, and fixedly connected with the reflective film 801, and is used for supporting the reflective film 801; the supporting rod 602 is matched with the upper adjusting nut 603 and the lower adjusting nut 604, and is used for adjusting the position of the part of the reflecting film 801; the guide protrusion 704 provided on the supporting rod 602 is matched with the guide groove 703 in the main body portion, so as to prevent the supporting rod 602 from rotating circumferentially when the height is adjusted.

When the main body part is completely unfolded, the ends of the supporting rods 602 are all positioned on the same parabolic cylinder by fine adjustment, and at the moment, the reflecting film 801 forms a parabolic cylinder; when the main body is folded, the supporting frame 601 is bent along with the movement of the supporting rod 602, and at this time, the reflective film 801 is folded inside the main body along with the bending of the supporting frame 601.

The building method comprises the following steps: the second isosceles trapezoid 102 in the deployable cell at the end of the deployable parabolic cylinder antenna is fixed at its upper base, and an axial driving force F is applied at the other end of the deployable parabolic cylinder antenna.

In the deployable unit, the first isosceles trapezoid 101 and the second isosceles trapezoid 102 rotate around the first hinge 401 and are axially away from each other, the first right-angle trapezoid 201 and the second right-angle trapezoid 202 rotate around the second hinge 402 and are axially away from each other, the third isosceles trapezoid 111 and the fourth isosceles trapezoid 112 rotate around the first hinge 403 and are axially away from each other, and the first rectangular member 301 and the second rectangular member 302 rotate around the first hinge 404 and are axially away from each other; at the same time, two deployable units of the same layer in the parabolic expandable mechanism will rotate around the first isosceles trapezoid 101 and the second isosceles trapezoid 102 and move away from each other in the radial direction; the mutual distancing takes place synchronously.

The arrangement of the fifth hinge 405 at the body section layer enables a uniform motion pattern to be achieved for all the deployable cells in the parabolic cylinder deployable mechanism; until the main body part is completely unfolded from the square-like structure, forming the parabolic cylinder structure; the reflective film 801 is also stretched to form the desired parabolic reflecting surface.

Finally, the precision of the parabolic reflecting surface is further fine-tuned by manually rotating the upper and lower adjusting

nuts

603, 604 in the support device.

The fastening method comprises the following steps: as shown in the figure, after the main body portion is completely unfolded, one end of a fixing support 705 is clamped into a stud structure 706 at the upper bottom of the second isosceles trapezoid 102 in the deployable unit at the end of the deployable parabolic cylinder antenna, and then a fixing nut 707 is used to fix one end of the fixing support on the stud structure 706; then, the other end of the fixing support 705 is clamped into the stud structure 706 at the upper bottom of the first isosceles trapezoid 101 in the deployable unit at the other end of the deployable parabolic cylinder antenna, and the other end of the fixing support 705 is fixed on the stud structure 706 by using the fixing nut 707, so as to ensure that the axial length of the main body part of the parabolic cylinder antenna is unchanged.

As shown, the first isosceles trapezoid 101, the second isosceles trapezoid 102, the first right-angle trapezoid 201, the second right-angle trapezoid 202, the third isosceles trapezoid 111, the fourth isosceles trapezoid 112, the first rectangular piece 301, and the second rectangular piece 302 are all one-piece members; the first hinge 401, the second hinge 402, the third hinge 403, the fourth hinge 404, the fifth hinge 405, the first end rectangular plate 501, the second end rectangular plate 502 and the third end rectangular plate 503 are all provided with a supporting device; the hinge lug seat 701 is cylindrical, and through hole structures for accommodating the pin shaft 702 are arranged at the centers of the hinge lug seats 701; a 45-degree chamfered structure is arranged at the bottom edge of each of the first isosceles trapezoid 101 and the second isosceles trapezoid 102 so as to eliminate the interference between the components when the main body part is folded; the first isosceles trapezoid 101 and the second isosceles trapezoid 102 are identical in structure; the third isosceles trapezoid 111 and the fourth isosceles trapezoid 112 have the same structure.

The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. A mounting method of a foldable parabolic cylinder antenna is characterized in that: the parabolic cylinder antenna comprises a main body part, a reflecting film (801) and a supporting device; the main body part is used for folding and unfolding the parabolic cylinder antenna, the reflecting film (801) is used for signal reflection of the parabolic cylinder antenna, and the supporting device is used for connecting the reflecting film (801) and the main body part; the installation method comprises a building method and a fastening method;

the main body part is formed by combining a plurality of expandable units, the expandable units are of a bilateral symmetry structure and comprise a first isosceles trapezoid (101), a second isosceles trapezoid (102), a first right-angle trapezoid (201), a second right-angle trapezoid (202), a third isosceles trapezoid (111), a fourth isosceles trapezoid (112), a first rectangular piece (301), a second rectangular piece (302), a first hinge (401), a second hinge (402), a third hinge (403) and a fourth hinge (404); the first hinge (401) connects the first isosceles trapezoid (101) and the second isosceles trapezoid (102), and the first isosceles trapezoid (101) and the second isosceles trapezoid (102) are symmetrically arranged with respect to the first hinge (401); the second hinge (402) connects the first right angle ladder (201) and the second right angle ladder (202), and the first right angle ladder (201) and the second right angle ladder (202) are symmetrically arranged about the second hinge (402); the third hinge (403) connects the third isosceles trapezoid (111) and the fourth isosceles trapezoid (112), and the third isosceles trapezoid (111) and the fourth isosceles trapezoid (112) are symmetrically arranged about the third hinge (403); the fourth hinge (404) connects the first rectangular member (301) and the second rectangular member (302), and the first rectangular member (301) and the second rectangular member (302) are symmetrically arranged about the fourth hinge (404);

the first isosceles trapezoid (101) is isosceles trapezoid and is provided with 6 hinge lug seats (701), wherein the axes of the 6 hinge lug seats (701) are on the same plane;

the first right-angle trapezoidal member (201) is in a right-angle trapezoid shape and is provided with 12 hinge lug seats (701), wherein the axes of the hinge lug seats (701) positioned at the upper bottom and two waists of the first right-angle trapezoidal member (201) are positioned on the same plane, the hinge lug seat (701) positioned at the inclined waist of the first right-angle trapezoidal member (201) and the hinge lug seat (701) positioned at one waist of the first isosceles trapezoidal member (101) form a rotary connection through a pin shaft (702), and the first right-angle trapezoidal member (201) can rotate clockwise to be close to the first isosceles trapezoidal member (101);

the third isosceles trapezoid (111) is in an isosceles trapezoid shape and is provided with 8 hinge ear seats (701), wherein the axes of the hinge ear seats (701) positioned at the lower bottom and two waists of the third isosceles trapezoid (111) are positioned on the same plane, the hinge ear seat (701) positioned at one waist of the third isosceles trapezoid (111) is rotatably connected with the hinge ear seat (701) positioned at the vertical waist of the first right-angle trapezoid (201) through a pin shaft (702), and the third isosceles trapezoid (111) can clockwise rotate to be close to the first right-angle trapezoid (201);

the first rectangular piece (301) is rectangular and is provided with 6 hinge lug seats (701), wherein the axes of the hinge lug seats (701) positioned at the long edge and the wide edge of the first rectangular piece (301) are positioned on the same plane, the hinge lug seat (701) positioned at the long edge of the first rectangular piece (301) and the hinge lug seat (701) positioned at the other waist of the third isosceles trapezoid-shaped piece (111) form a rotary connection through a pin shaft (702), and the first rectangular piece (301) can rotate clockwise to be close to the third isosceles trapezoid-shaped piece (111);

the first hinge (401) is rectangular and is provided with 8 hinge ear seats (701), wherein the axes of the 8 hinge ear seats (701) are in the same plane, the hinge ear seat (701) at one long side of the first hinge (401) is in rotary connection with the hinge ear seat (701) at the lower bottom of the first isosceles trapezoid (101) through a pin shaft (702), and the first hinge (401) can rotate clockwise to be close to the first isosceles trapezoid (101);

the second hinge (402) is rectangular and is provided with 2 hinge ear seats (701), wherein the axes of the 2 hinge ear seats (701) are positioned on the same plane, the hinge ear seat (701) on one long side of the second hinge (402) is in rotating connection with the hinge ear seat (701) on the upper bottom of the first right-angle trapezoid (201) through a pin shaft (702), and the second hinge (402) can rotate counterclockwise to be close to the first right-angle trapezoid (201);

the third hinge (403) is rotatably connected with the hinge lug seat (701) at the lower bottom of the third isosceles trapezoid (111) through the pin (702) through the hinge lug seat (701) at the long side of the third hinge (403), and the third hinge (403) can rotate counterclockwise to be close to the third isosceles trapezoid (111);

the fourth hinge (404) is rotatably connected with the hinge lug seat (701) at one long side of the fourth hinge through the pin shaft (702), and the fourth hinge (404) can rotate counterclockwise to be close to the first rectangular piece (301);

the second isosceles trapezoid (102) is provided with 6 hinge lug seats (701), wherein the axes of the 6 hinge lug seats (701) are in the same plane, the hinge lug seat (701) at the lower bottom of the second isosceles trapezoid (102) and the hinge lug seat (701) at the other long edge of the first hinge (401) form a rotary connection through a pin shaft (702), and the second isosceles trapezoid (102) can rotate clockwise to be close to the first hinge (401);

the second right-angle ladder-shaped part (202) is in a right-angle trapezoid shape and is provided with 12 hinge lug seats (701), wherein the axes of the hinge lug seats (701) positioned at the upper bottom and two waists of the right-angle ladder-shaped part are positioned on the same plane, the hinge lug seat (701) positioned at the upper bottom of the second right-angle ladder-shaped part (202) and the hinge lug seat (701) positioned on the other long side of the second hinge (402) form a rotary connection through a pin shaft (702), the hinge lug seat (701) positioned at the inclined waist of the second right-angle ladder-shaped part (202) and the hinge lug seat (701) positioned at one waist of the second isosceles trapezoid-shaped part (102) form a rotary connection through the pin shaft (702), and the second right-angle ladder-shaped part (202) can rotate counterclockwise to be close to the second hinge (402) and the second isosceles trapezoid-shaped part (102);

the hinge lug seat (701) at the lower bottom of the fourth isosceles trapezoid (112) is rotatably connected with the hinge lug seat (701) at the other long side of the third hinge (403) through the pin shaft (702), the hinge lug seat (701) at one waist of the fourth isosceles trapezoid (112) is rotatably connected with the hinge lug seat (701) at the vertical waist of the second right-angle trapezoid (202) through the pin shaft (702), and the fourth isosceles trapezoid (112) can rotate counterclockwise to be close to the third hinge (403) and the second right-angle trapezoid (202);

the second rectangular part (302) is rectangular and is provided with 6 hinge lug seats (701), wherein the axes of the hinge lug seats (701) positioned at the long side and the wide side of the second rectangular part (302) are positioned on the same plane, the hinge lug seat (701) positioned at the wide side of the second rectangular part (302) and the hinge lug seat (701) positioned at the other long side of the fourth hinge (404) form a rotary connection through a pin shaft (702), the hinge lug seat (701) positioned at the long side of the second rectangular part (302) and the hinge lug seat (701) positioned at the other waist of the fourth isosceles trapezoid (112) form a rotary connection through the pin shaft (702), and the second rectangular part (302) can rotate counterclockwise to be close to the fourth hinge (404) and the fourth isosceles trapezoid (112);

an axis of the first isosceles trapezoid (101) rotatably connected with the first hinge (401), an axis of the first isosceles trapezoid (101) rotatably connected with the first right-angle trapezoid (201) and an axis of the first right-angle trapezoid (201) rotatably connected with the second hinge (402) intersect at a point; the axis of the first right-angle trapezoid (201) rotatably connected with the second hinge (402), the axis of the first right-angle trapezoid (201) rotatably connected with the third isosceles trapezoid and the axis of the third isosceles trapezoid (111) rotatably connected with the third hinge (403) intersect at a point; the axis of the third isosceles trapezoid (111) rotatably connected with the third hinge (403), the axis of the third isosceles trapezoid (111) rotatably connected with the first rectangular piece (301) and the axis of the first rectangular piece (301) rotatably connected with the fourth hinge (404) intersect at a point;

the two expandable units are mutually connected in a mode of sharing a component to obtain a parabolic cylinder expandable mechanism with the layer number of 1; wherein the common member comprises: the first isosceles trapezoid (101), the first hinge (401) and the second isosceles trapezoid (102); the parabolic cylinder developable mechanism with the layer number of 1 obtained by combining the two developable units is of a double-symmetrical structure; the parabolic cylinder extensible mechanisms with the number of layers of 1 are sequentially connected through a fifth hinge (405) and combined to obtain the main body part; the fifth hinge is rectangular and is provided with 2 hinge lug seats (701), and the axes of the 2 hinge lug seats (701) in the fifth hinge are in the same plane;

a first end rectangular plate (501), a second end rectangular plate (502) and a third end rectangular plate (503) are arranged at the left end and the right end of the main body part; the hinge lug seat (701) at the long side of the first end rectangular plate (501) is in rotary connection with the hinge lug seat (701) at one wide side of the second rectangular piece (302) through the pin shaft (702), and the hinge lug seat (701) at the wide side of the first end rectangular plate (501) is in rotary connection with the hinge lug seat (701) at one wide side of the second end rectangular plate (502) through the pin shaft (702); the hinge lug seat (701) at the long side of the second end rectangular plate (502) is rotationally connected with the hinge lug seat (701) at the upper bottom of the second isosceles trapezoid (112) through the pin shaft (702), and the hinge lug seat (701) at the wide side of the second end rectangular plate (502) is rotationally connected with the hinge lug seat (701) at the wide side of the third end rectangular plate (503) through the pin shaft (702); the hinge lug seat (701) at the long side of the third end rectangular plate (503) is in rotary connection with the hinge lug seat (701) at the upper bottom of the second right-angle trapezoid (202) through the pin shaft (702);

when the main body part is unfolded, the first isosceles trapezoid (101) and the second isosceles trapezoid (102) rotate around the first hinge (401) and are axially away from each other, the first right-angle trapezoid (201) and the second right-angle trapezoid (202) rotate around the second hinge (402) and are axially away from each other, the third isosceles trapezoid (111) and the fourth isosceles trapezoid (112) rotate around the third hinge (403) and are axially away from each other, and the first rectangular member (301) and the second rectangular member (302) rotate around the fourth hinge (404) and are axially away from each other; at the same time, two of the deployable units located on the same level will rotate around the first isosceles trapezoid (101) and the second isosceles trapezoid (102) and be radially distanced from each other; the mutual distancing takes place synchronously; finally, the main body part is unfolded from the square-like folded state to a parabolic cylindrical state; the unfolding of the main body part is single-degree-of-freedom motion;

the reflective film (801) is fixed on the main body part through the supporting device; the supporting device comprises a supporting framework (601), a supporting rod (602), an upper adjusting nut (603) and a lower adjusting nut (604); the supporting framework (601) is a high-toughness metal wire which is fixed in an end hole of the strut (602) and fixedly connected with the reflecting film (801) and is used for supporting the reflecting film (801); the supporting rod (602) is matched with the upper adjusting nut (603) and the lower adjusting nut (604) and is used for local position adjustment of the reflecting film (801); the supporting rod (602) is provided with a guide protrusion (704) which is matched with a guide groove (703) in the main body part, so that the supporting rod (602) is prevented from rotating circumferentially when the height is adjusted;

when the main body part is completely unfolded, the ends of the support rods (602) are all positioned on the same parabolic cylinder by fine adjustment, and then the reflecting film (801) forms a parabolic cylinder; when the main body part is folded, the supporting framework (601) bends along with the movement of the supporting rod (602), and at the moment, the reflecting film (801) is gathered in the inner part of the main body part along with the bending of the supporting framework (601);

the building method comprises the following steps: -fixing the second isosceles trapezoid (102) in the deployable cell at the end of the deployable parabolic cylinder antenna at its upper base, applying an axial driving force F at the other end of the deployable parabolic cylinder antenna;

in the deployable unit, the first isosceles trapezoid (101) and the second isosceles trapezoid (102) rotate around the first hinge (401) and are axially away from each other, the first right-angle trapezoid (201) and the second right-angle trapezoid (202) rotate around the second hinge (402) and are axially away from each other, the third isosceles trapezoid (111) and the fourth isosceles trapezoid (112) rotate around the first hinge (403) and are axially away from each other, and the first rectangular member (301) and the second rectangular member (302) rotate around the first hinge (404) and are axially away from each other; at the same time, two deployable units of the same layer in the parabolic expandable mechanism will rotate around the first isosceles trapezoid (101) and the second isosceles trapezoid (102) and move away from each other in radial direction; the mutual distancing takes place synchronously;

the arrangement of the fifth hinge (405) at the main body part layer enables a uniform motion pattern to be realized for all the deployable units in the parabolic cylinder deployable mechanism; until the main body part is completely unfolded from the square-like structure, forming the parabolic cylinder structure; the reflecting film (801) is unfolded to form a required parabolic cylindrical reflecting surface;

finally, the local position of the parabolic cylindrical reflecting surface is further finely adjusted by manually rotating the upper adjusting nut (603) and the lower adjusting nut (604) in the supporting device so as to improve the antenna precision;

the fastening method comprises the following steps: after the main body part is completely unfolded, clamping one end of a fixed support rod (705) into a stud structure (706) at the upper bottom of the second isosceles trapezoid (102) in the extensible unit at the end part of the extensible parabolic cylinder antenna, and fixing one end of the fixed support rod on the stud structure (706) by using a fixing nut (707); then, the other end of the fixed supporting rod (705) is clamped into the stud structure (706) at the upper bottom of the first isosceles trapezoid (101) in the deployable unit at the other end of the deployable parabolic cylinder antenna, and the other end of the fixed supporting rod (705) is fixed on the stud structure (706) by the fixing nut (707) in the same way, so that the axial length of the main body part of the parabolic cylinder antenna is ensured to be unchanged.

2. The method of claim 1, wherein the method further comprises: the first isosceles trapezoid (101), the second isosceles trapezoid (102), the first right-angle trapezoid (201), the second right-angle trapezoid (202), the third isosceles trapezoid (111), the fourth isosceles trapezoid (112), the first rectangular piece (301) and the second rectangular piece (302) are all integrated components.

3. The method of claim 1, wherein the method further comprises: the first hinge (401), the second hinge (402), the third hinge (403), the fourth hinge (404), the fifth hinge (405), the first end rectangular plate (501), the second end rectangular plate (502), and the third end rectangular plate (503) are all mounted with a support device.

4. The method of claim 1, wherein the method further comprises: the reflective film (801) is a polyester film.

5. The method of claim 1, wherein the method further comprises: articulated ear seat (701) are cylindricly, and its center department has all set up and has held the through-hole structure of round pin axle (702).

6. The method of claim 1, wherein the method further comprises: and a 45-degree chamfered structure is arranged at the bottom edge of each of the first isosceles trapezoid (101) and the second isosceles trapezoid (102) to eliminate the interference between the components when the main body part is folded.

7. The method of claim 1, wherein the method further comprises: the first isosceles trapezoid (101) and the second isosceles trapezoid (102) are identical in structure.

8. The method of claim 1, wherein the method further comprises: the third isosceles trapezoid (111) and the fourth isosceles trapezoid (112) have the same structure.