Fixed-surface deployable antenna

Abstract

The invention discloses a fixed surface deployable antenna. The antenna comprises a center body, a lifting mechanism, an outer ring panel group and a locking assembly. The center body has a first end and a second end in an axial direction. The outer ring panel set comprises a plurality of arc-shaped panel units, each arc-shaped panel unit is hinged to the fixed disc through an overturning base, the outer surface of each arc-shaped panel unit is connected with the movable disc through an inclined supporting rod, one end of each inclined supporting rod is connected with the movable disc through a first universal hinge, and the other end of each inclined supporting rod is connected with the movable disc through a second universal hinge. The first lifting device drives the movable disc to move in the direction away from or close to the fixed disc, the arc-shaped panel unit can rotate clockwise or anticlockwise, and therefore the fixed surface expandable antenna has the unfolded state and the folded state. The size of the outer envelope in the folded state meets the railway / highway transportation requirement, the time used in the unfolding and folding process is short, disassembly and assembly are not needed, and therefore precision errors caused by disassembly and assembly are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of antenna equipment, and in particular to a fixed-surface deployable antenna. Background Art

[0002] The development of modern communication technology has put forward higher requirements for vehicle-mounted mobile station antenna equipment. While meeting the requirements of railway / road transportation, the equipment should have excellent mobility, concealment, and reliability. The equipment can start working quickly after arriving at the station and should be able to be quickly withdrawn after the work is completed.

[0003] Due to the restrictions of railway / road transportation requirements, when the main reflector aperture of the vehicle-mounted antenna equipment is large, it may exceed the height or width size restrictions in the railway / road transportation requirements and cannot be transferred or transported normally.

[0004] Traditional vehicle-mounted mobile station antenna equipment is mostly assembled on-site. The antenna base is transported by the antenna carrier, and the antenna panel and back frame are transported by a freight truck. After the antenna carrier arrives at the work site, the antenna back frame and panel are assembled on-site, and the panel accuracy is adjusted. After the mission is completed, the antenna back frame and panel need to be dismantled. This method requires a lot of manpower and time costs, and the structure needs to be disassembled and installed many times, which will inevitably affect the working accuracy of the antenna equipment.

[0005] Therefore, designing a fixed-surface deployable antenna has become an urgent problem to be solved. By folding the panel, the vehicle-mounted antenna equipment can meet the requirements of railway / road transportation. At the same time, the panel folding mechanism should be fast, stable and reliable when working. Summary of the invention

[0006] The embodiment of the present application provides a fixed-surface deployable antenna, which can solve the technical problems in the prior art that the antenna needs to be disassembled during transportation and assembled during use, which is time-consuming and labor-intensive and affects the working accuracy of the antenna. The technical solution is as follows:

[0007] A fixed-surface deployable antenna, comprising:

[0008] A central body having a first end and a second end along an axial direction;

[0009] The lifting mechanism comprises a fixed plate, a movable plate and a first lifting device, wherein the fixed plate is fixedly sleeved at the first end of the central body, the movable plate is movably sleeved outside the central body, and the first lifting device is used to drive the movable plate to approach or move away from the fixed plate; the edge of the fixed plate is uniformly arrayed with a plurality of flip seats, the edge of the movable plate is uniformly arrayed with a plurality of first universal hinges, and the plurality of first universal hinges correspond to the plurality of flip seats one by one; the flip seat comprises a base and an inclined shaft arranged on the base, and the base is fixedly connected to the fixed plate;

[0010] The outer panel group includes a plurality of arc panel units evenly distributed along the circumference of the fixed disk, the outer surface of each arc panel unit is fixedly connected to a connecting rod, and the other end of the connecting rod is rotationally connected to one of the flip seats through the oblique axis; the outer surface of each arc panel unit has a second universal hinge; the second universal hinge and the corresponding first universal hinge are connected through an oblique support rod;

[0011] When the lifting device drives the movable disk to move away from the fixed disk, the movable disk pulls the diagonal support rod to make the curved panel unit rotate clockwise around the inclined axis; when the lifting device drives the movable disk to move toward the fixed disk, the movable disk pushes the diagonal support rod to make the curved panel unit rotate counterclockwise around the inclined axis;

[0012] The outer circle panel group has an expanded state and a folded state. When the outer circle panel group is in the expanded state, a plurality of the arc panel units are expanded to form an umbrella surface; when the outer circle panel group is in the folded state, a plurality of the arc panel units are staggered and folded.

[0013] And a plurality of groups of locking components, each group of the locking components is used to lock two adjacent arc-shaped panel units in the expanded state, or to lock two adjacent arc-shaped panel units in the folded state.

[0014] Optionally, the number of the curved panel units is 24-30.

[0015] Optionally, a first preset angle α is formed between the oblique axis and the base, and the first preset angle α satisfies: 20°≤α≤40°;

[0016] The installation angle of each flip seat on the fixed plate must satisfy: the projection of the first oblique axis on the fixed plate is a projection line segment L, the midpoint of the projection line segment is O, the tangent line on the fixed plate passing through point O is T, and there is a second preset angle β between the projection line segment L and the tangent line T, and the second preset angle β satisfies: 20°≤β≤40°.

[0017] Optionally, the number of the curved panel units is 30, the first preset angle α=30°, and the second preset angle β=30.5°.

[0018] Optionally, the first lifting device includes a first drive motor, a power distribution system, and four first spiral lifts; each of the first spiral lifts includes a first screw rod and a first nut connected to the first screw rod, the first screw rod is vertically rotatably connected to the outer wall of the central body, and the first nut is connected to the movable disk; the first drive motor is used to drive the four first screw rods to rotate.

[0019] Optionally, the power distribution system includes a first commutator and two second commutators, the first commutator has a first input shaft and two first output shafts; the second commutator has a second input shaft and two second output shafts;

[0020] The first input shaft is connected to the motor shaft of the first drive motor, the two first output shafts are respectively connected to the second input shafts of the two second commutators, and each second output shaft is respectively connected to the input shafts of the two first screw elevators;

[0021] The housing of the first commutator and the housing of the second commutator are both fixedly connected to the central body.

[0022] Optionally, the locking assembly includes an expanded locking seat, a folded locking seat and an electric cylinder, and each of the curved panel units is fixedly connected with an expanded locking seat, a folded locking seat and an electric cylinder; when the outer ring panel group is in an expanded state, the electric cylinder is started, and the locking tongue of the electric cylinder is inserted into the locking hole of the expanded locking seat of the adjacent curved panel unit; when the outer ring panel group is in a folded state, the electric cylinder is started, and the locking tongue of the electric cylinder is inserted into the locking hole of the folded locking seat of the adjacent curved panel unit.

[0023] Optionally, the first universal joint includes an axle seat and a cross-axis universal joint, the axle seat is fixedly connected to the movable disk, the cross-axis universal joint has two axle forks, one of the axle forks is rotatably connected to the axle seat, and the other axle fork is connected to the first end of the diagonal support rod.

[0024] Optionally, the second universal joint is a ball joint, which includes a ball seat and a ball head rotatably disposed in the ball seat, the ball seat is fixedly connected to the outer wall of the arc panel unit, and the ball head is connected to the second end of the diagonal support rod.

[0025] Optionally, the fixed surface deployable antenna further includes an inner ring panel and a second lifting device for driving the inner ring panel to lift, the second lifting device includes four second spiral lifts and four second drive motors; the upper end of the screw rod of the second spiral lift is rotatably connected to the lower surface of the inner ring panel, and the nut of the second spiral lift is fixedly connected to the central body. The beneficial effects brought about by the technical solution provided in the embodiment of the present application include at least:

[0026] A fixed surface deployable antenna comprises: a central body, a lifting mechanism, an outer ring panel group and a locking assembly. The central body has a first end and a second end along the axial direction. Since the outer ring panel group includes multiple arc panel units, each arc panel unit is hinged to the fixed disk through a flip seat, and the outer surface of each arc panel unit is connected to the movable disk through a diagonal support rod, and one end of the diagonal support rod is connected to the movable disk through a first universal hinge, and the other end is hinged to the outer wall of the arc panel unit through a second universal hinge. When the first lifting device drives the movable disk to move in a direction away from the fixed disk, the movable disk can pull the diagonal support rod, and the diagonal support rod pulls the arc panel unit to make the arc panel unit rotate clockwise around the inclined axis until multiple arc panel units form an umbrella surface with a smooth transition of the inner surface between adjacent arc panel units. This state is the unfolded state of the outer ring panel group; when the first lifting device drives the movable disk to move in a direction close to the fixed disk, the movable disk can push the diagonal support rod, and the diagonal support rod pushes the arc panel unit to make the arc panel unit rotate counterclockwise around the inclined axis. Since the inclined axis on the flip seat is inclined, during the counterclockwise rotation of the arc panel unit, adjacent arc panel units are staggered and overlapped, so that the outer ring panel group is in a folded state. The fixed surface deployable antenna of the present application has an deployed state and a folded state. The outer envelope size in the folded state meets the requirements of railway / road transportation. The deployment process takes a short time and does not require disassembly, thereby avoiding the accuracy error caused by disassembly. Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a three-dimensional diagram of the fixed-surface deployable antenna provided in an embodiment of the present application in an deployed state;

[0029] Figure 2 is a front view of the fixed surface deployable antenna provided in an embodiment of the present application in the deployed state;

[0030] Figure 3 is a bottom view of the fixed-surface deployable antenna provided in an embodiment of the present application in an deployed state;

[0031] Figure 4 is a three-dimensional diagram of the fixed-surface deployable antenna provided in an embodiment of the present application in a folded state;

[0032] Figure 5 is a front view of the fixed-surface deployable antenna provided in an embodiment of the present application in a folded state;

[0033] Figure 6 is a top view of the fixed surface deployable antenna provided in an embodiment of the present application in a folded state;

[0034] Figure 7 is a three-dimensional diagram of a curved panel unit of a fixed-surface deployable antenna provided in an embodiment of the present application in an deployed state;

[0035] Figure 8 yes Figure 7 A partial enlarged view of the middle A;

[0036] Fig. 9 yes Figure 8 A three-dimensional schematic diagram of the middle flip seat;

[0037] Fig.10 It is a schematic diagram of the angle between the oblique axis of the flip seat and the base;

[0038] Fig.11 It is a schematic diagram of the distribution projection of the oblique axis of the flip seat on the fixed plate;

[0039] Fig.12 yes Fig.11 A partial enlarged view of point B in the middle;

[0040] Fig.13 yes Figure 7 A three-dimensional schematic diagram of the lifting mechanism;

[0041] Fig.14 yes Figure 7 A three-dimensional schematic diagram of the middle inner ring panel and the second lifting device;

[0042] Fig.15 It is a front view of a curved panel unit of the fixed-surface deployable antenna provided in an embodiment of the present application in a folded state;

[0043] Fig.16 yes Fig.15 A partial enlarged view of point C in the middle;

[0044] Fig.17 It is a schematic diagram of an electric cylinder and an expansion locking seat or an electric cylinder and a retracting locking seat on two adjacent arc panel units;

[0045] Fig.18 It is a three-dimensional schematic diagram of a first universal joint provided in an embodiment of the present application, including an axle seat and a cross-axis universal joint.

[0046] Description of Reference Numerals

[0047] 1-center body; 2-lifting mechanism; 201-fixed plate; 202-movable plate; 203-turning seat; 2031-base; 2032-oblique axis; 204-first universal hinge; 2041-shaft seat; 2042-cross-axis universal joint; 3-first lifting device; 301-first drive motor; 302-first screw lifter; 3021-first screw rod; 3022-first nut; 303-first commutator; 3031-first input shaft; 3032 -first output shaft; 304-second commutator; 3041-second input shaft; 3042-second output shaft; 4-outer circle panel group; 401-arc panel unit; 402-connecting rod; 403-second universal hinge; 404-diagonal support rod; 5-locking assembly; 501-expanding locking seat; 502-folding locking seat; 503-electric cylinder; 6-inner circle panel; 7-second lifting device; 701-second spiral lift; 702-second drive motor; 8-guide rail. DETAILED DESCRIPTION

[0048] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0049] In the present disclosure, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the "upper" and "lower" of the corresponding parts in the use state relative to the direction of gravity, and "inside" and "outside" refer to the "inside" and "outside" relative to the corresponding parts' own contours. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements.

[0050] According to the embodiments of the present application, reference Figures 1 to 17 As shown, a fixed surface deployable antenna is provided, and the fixed surface shell deployable antenna comprises: a central body 1, a lifting mechanism 2, an outer ring panel group 4 and a locking assembly 5. Figures 1 to 6 As shown, the central body 1 has a first end and a second end along the axial direction.

[0051] refer to Figure 2 , Figure 7 and Figure 8As shown, the lifting mechanism 2 includes a fixed plate 201, a movable plate 202 and a first lifting device 3, wherein the fixed plate 201 is fixedly sleeved on the first end of the central body 1, and the movable plate 202 is movably sleeved outside the central body 1, and the first lifting device 3 is used to drive the movable plate 202 to approach or move away from the fixed plate 201; the edge of the fixed plate 201 is uniformly arrayed with a plurality of flip seats 203, and the edge of the movable plate 202 is uniformly arrayed with a plurality of first universal hinges 204, and the plurality of first universal hinges 204 correspond to the plurality of flip seats 203 one by one; the flip seat 203 includes a base 2031, and an inclined shaft 2032 arranged on the base 2031, and the base 2031 is fixedly connected to the fixed plate 201;

[0052] refer to Figures 1 to 8 As shown, the outer ring panel group 4 includes a plurality of arc panel units 401 uniformly distributed along the circumference of the fixed disk 201, the outer surface of each of the arc panel units 401 is fixedly connected to a connecting rod 402, and the other end of the connecting rod 402 is rotationally connected to a flip seat 203 through the inclined axis 2032; the outer surface of each of the arc panel units 401 has a second universal hinge 403; the second universal hinge 403 and the corresponding first universal hinge 204 are connected via an inclined support rod 404.

[0053] refer to Figures 1 to 8 As shown, when the lifting device drives the movable plate 202 to move away from the fixed plate 201, the movable plate 202 pulls the diagonal support rod 404 to make the curved panel unit 401 rotate clockwise around the diagonal axis 2032; when the lifting device drives the movable plate 202 to move close to the fixed plate 201, the movable plate 202 pushes the diagonal support rod 404 to make the curved panel unit 401 rotate counterclockwise around the diagonal axis 2032;

[0054] The outer circle panel group 4 has an expanded state and a folded state. When the outer circle panel group 4 is in the expanded state, a plurality of the arc panel units 401 are expanded to form an umbrella surface; when the outer circle panel group 4 is in the folded state, a plurality of the arc panel units 401 are staggered and folded.

[0055] And a plurality of groups of locking components 5, each group of the locking components 5 is used to lock two adjacent arc-shaped panel units 401 in the unfolded state.

[0056] In the above embodiment, since the outer ring panel group 4 includes a plurality of curved panel units 401, each curved panel unit 401 is hinged to the fixed disk 201 through the flip seat 203, the outer surface of each curved panel unit 401 is connected to the movable disk 202 through the diagonal support rod 404, and one end of the diagonal support rod 404 is connected to the movable disk 202 through the first universal hinge 204, and the other end is hinged to the outer wall of the curved panel unit 401 through the second universal hinge 403. When the first lifting device 3 drives the movable disk 202 to move away from the fixed disk 201, the movable disk 202 can pull the diagonal support rod 404, and the diagonal support rod 404 in turn pulls the curved panel unit 401, so that the curved panel unit 401 Rotate clockwise around the oblique axis 2032 until multiple arc panel units 401 form an umbrella with a smooth transition of the inner surface between adjacent arc panel units 401. This state is the unfolded state of the outer circle panel group 4. When the first lifting device 3 drives the movable disk 202 to move in the direction close to the fixed disk 201, the movable disk 202 can push the oblique support rod 404, and the oblique support rod 404 pushes the arc panel unit 401, so that the arc panel unit 401 rotates counterclockwise around the oblique axis 2032. Since the oblique axis 2032 on the flip seat 203 is tilted, during the counterclockwise rotation of the arc panel unit 401, the adjacent arc panel units 401 are misaligned and overlapped, so that the outer circle panel group 4 is in a folded state. The solid surface deployable antenna of the present application has an unfolded state and a folded state. The outer envelope size in the folded state meets the requirements of railway / road transportation. The unfolding and folding process takes a short time and does not require disassembly and assembly, thereby avoiding the precision error caused by disassembly and assembly.

[0057] In the above embodiment, the diagonal brace rod 404 may be made of a carbon fiber tube.

[0058] In the above embodiment, in order to enable the movable plate 202 to move linearly, the central body 1 is further provided with guide rails 8 for guiding the movable plate 202, and the number of the guide rails 8 is four.

[0059] According to the embodiments of the present application, reference Figure 3 As shown, the number of the curved panel units 401 is 24-30.

[0060] According to the embodiments of the present application, reference Figures 8 to 10 As shown, a first preset angle α is formed between the oblique axis 2032 and the base 2031 , and the first preset angle α satisfies: 20°≤α≤40°.

[0061] According to the embodiments of the present application, reference Figure 11 to Figure 12As shown, the installation angle of each flip seat 203 on the fixed disk 201 needs to satisfy: the projection of the first oblique axis 2032 on the fixed disk 201 is a projection line segment L, the midpoint of the projection line segment is O, the tangent line through point O on the fixed disk 201 is T, and there is a second preset angle β between the projection line segment L and the tangent line T, and the second preset angle β satisfies: 20°≤β≤40°.

[0062] Since a first preset angle α is set between the inclined axis 2032 and the base 2031, and a second preset angle β is formed between the projection line segment L and the tangent T, during the retraction process of multiple curved panel units 401, adjacent curved panel units 401 can be staggered and overlapped, thereby avoiding mutual interference between the curved panel units 401 on the solid surface.

[0063] In the embodiment of the present application, when the outer ring panel group 4 is divided into blocks, the more the number of divided arc panel units 401 is, the smaller the width of a single arc panel unit 401 is, the smaller the width dimension of the antenna after folding is, and it is easier to meet the width dimension requirement after folding. However, when the number of arc panel units 401 is more, since the locking assembly 5 and other components need to be installed on the arc panel unit 401, the overall weight of the antenna reflective surface will be heavier, and the stability of the outer ring panel group 4 during the unfolding and folding process will also be poor. Taking into account the total weight of the antenna equipment and the folding width requirements (to meet the railway / road transportation requirements), the number of blocks of the outer ring panel group 4 is usually about 30 (24 to 32).

[0064] The thicker the outer panel group 4 is, the better the rigidity of the single curved panel unit 401 is, and the surface accuracy is easier to ensure. However, when the curved panel unit 401 is thicker, the gap between two adjacent curved panel units 401 after folding is smaller, and interference is more likely to occur during the unfolding and folding process. Therefore, the curved panel unit 401 should be made as thin as possible on the basis of ensuring surface accuracy and rigidity. After comprehensive consideration, the thickness of the curved panel unit 401 is 50mm.

[0065] The first preset angle α and the second preset angle β are related to the folded width and posture of the outer panel group 4 after folding. When the first preset angle α is smaller, the inclination angle of the outer panel group 4 after folding is smaller; when the second preset angle β is smaller, the width of the outer panel group 4 after folding is smaller, but the folding process is more likely to cause interference. Comprehensively consider the number of blocks of the curved panel unit 401 and the thickness of the curved panel unit 401 in this project to ensure that the posture of the curved panel unit 401 is reasonable and there is no interference during the unfolding and retracting process.

[0066] In a feasible embodiment, the number of the curved panel units 401 is selected to be 30, the first preset angle α=30°, and the second preset angle β=30.5°. The first preset angle α and the second preset angle β work together to realize the spatial rotation of the curved panel unit 401.

[0067] According to the embodiments of the present application, reference Figure 7 and Fig.13 As shown, the first lifting device 3 includes a first driving motor 301, a power distribution system, and four first spiral elevators 302; each of the first spiral elevators 302 includes a first screw rod 3021 and a first nut 3022 connected to the first screw rod 3021, the first screw rod 3021 is vertically rotatably connected to the outer wall of the central body 1, and the first nut 3022 is connected to the moving disk 202; the first driving motor 301 is used to drive the four first screw rods 3021 to rotate. In this case, the selection of four first spiral elevators 302 can make the moving disk 202 more uniformly stressed. After adopting the power distribution system, one first driving motor 301 can be used to drive four first spiral elevators 302 at the same time, so that the four first spiral elevators 302 can be lifted and lowered at the same time, thereby ensuring the consistency of the lifting action. Using one first driving motor 301 to drive four first spiral elevators 302 can also reduce the amount of the first driving motor 301, thereby reducing the total weight of the fixed surface deployable antenna.

[0068] According to the embodiments of the present application, reference Fig.13 As shown, the power distribution system includes a first commutator 303 and two second commutators 304, wherein the first commutator 303 has a first input shaft 3031 and two first output shafts 3032; the second commutator 304 has a second input shaft 3041 and two second output shafts 3042;

[0069] The first input shaft 3031 is connected to the motor shaft of the first drive motor 301, the two first output shafts 3032 are respectively connected to the second input shafts 3041 of the two second commutators 304, and each second output shaft 3042 is respectively connected to the input shafts of the two first screw elevators 302;

[0070] The housing of the first commutator 303 and the housing of the second commutator 304 are both fixedly connected to the central body 1. In this embodiment, the rotational torque output by the first drive motor 301 is divided into two rotational torques by the first commutator 303, and respectively input into the two second commutators 304, and each second commutator 304 further divides the rotational torque into two rotational torques, and finally the rotational torque of the first drive motor 301 is divided into four rotational torques, and respectively input into the four first screw elevators 302.

[0071] According to the embodiments of the present application, reference Figures 15 to 17 As shown, the locking assembly 5 includes an expansion locking seat 501, a folding locking seat 502 and an electric cylinder 503, and each of the arc panel units 401 is fixedly connected with an expansion locking seat 501, a folding locking seat 502 and an electric cylinder 503; when the outer circle panel group 4 is in an expanded state, the electric cylinder 503 is started, and the locking tongue of the electric cylinder 503 is inserted into the locking hole of the expansion locking seat 501 of the adjacent arc panel unit 401; when the outer circle panel group 4 is in a folded state, the electric cylinder 503 is started, and the locking tongue of the electric cylinder 503 is inserted into the locking hole of the folding locking seat 502 of the adjacent arc panel unit 401.

[0072] According to the embodiments of the present application, reference Figure 7 , Figure 8 and Fig.18 As shown, the first universal joint 204 includes an axle seat 2041 and a cross-axis universal joint 2042, wherein the axle seat 2041 is fixedly connected to the moving plate 202, and the cross-axis universal joint 2042 has two axle forks, one of which is rotatably connected to the axle seat 2041, and the other axle fork is connected to the first end of the diagonal support rod 404. In other embodiments, the first universal joint 204 may also be a ball joint, which is not limited in the present application.

[0073] According to the embodiments of the present application, reference Figure 7 and Figure 8 As shown, the second universal joint 403 is a ball joint, which includes a ball seat and a ball head rotatably arranged in the ball seat, the ball seat is fixedly connected to the outer wall of the arc panel unit 401, and the ball head is connected to the second end of the diagonal support rod 404.

[0074] According to the embodiments of the present application, reference Figure 6 , Figure 7 , Fig.14 and Fig.15 As shown, the fixed surface deployable antenna also includes an inner circle panel 6 and a second lifting device 7 for driving the inner circle panel 6 to rise and fall; when the outer circle panel group 4 is in the deployed state, the inner circle panel 6 is in the arc panel unit 401 close to the end of the central body 1, as an extension of the outer circle panel group 4 inward, it can ensure the index of the antenna reflection surface. When the outer circle panel group 4 is deployed or retracted, in order to avoid the inner circle panel 6 and the outer circle panel group 4 from interfering, the inner circle panel 6 must avoid the outer circle panel group 4. Before the outer circle panel group 4 is deployed or retracted, the inner circle panel 6 must move downward to avoid the working trajectory of the outer circle panel group 4. After the outer circle panel group 4 is deployed, the inner circle panel 6 moves upward to the theoretical working position.

[0075] Please refer to Fig.14As shown, the second lifting device 7 responsible for lifting the inner ring panel 6 includes four second spiral lifts 701 and four second drive motors 702; the upper end of the screw rod of the second spiral lift 701 can be rotatably connected to the lower surface of the inner ring panel 6, and the nut of the second spiral lift 701 is fixedly connected to the center body 1.

[0076] refer to Figures 1 to 18 The following describes in detail the workflow of the outer ring panel group 4 of the antenna changing from the unfolded state to the folded state:

[0077] Step 1: withdraw the lock tongue of the electric cylinder 503 on the outer circle face plate for locking the outer circle panel group 4 when it is in the unfolded state from the locking hole of the unfolding locking seat 501, so that the 30 arc panel units 401 can move independently;

[0078] Step 2: Start the second lifting device 7, and the inner circle panel 6 moves downward from the working position to avoid the working track of the arc panel unit 401;

[0079] Step 3: After ensuring that all electric cylinders 503 are completely disengaged from the unfolding locking seat 501 and the inner circle panel 6 is lowered to a safe position where it will not interfere with the curved panel unit 401, the first lifting device 3 of the lifting mechanism 2 is started, and the first drive motor 301 provides power. The four first screw rods 3021 convert the rotational motion of the first drive motor 301 into linear motion, driving the first nut 3022 to move up and down linearly, and the four guide rails 8 play a guiding role; the first nut 3022 moves upward, driving the moving plate 202 to move upward along the guide rails 8, and driving the 30 diagonal support rods 404 to move at the same time. The curved panel unit 401 is connected to the flip seat 203. When the diagonal support rod 404 moves, the driving force will be transmitted from the diagonal support rod 404 to the curved panel unit 401, and the curved panel unit 401 will rotate in space around the oblique axis 2032 of the flip seat 203, realizing the conversion from the moving plate 202 moving up and down to the rotational motion of the curved panel unit 401. The diagonal support rod 404 is connected to the moving plate 202 through a cross-axis universal joint 2042, and is connected to the arc panel unit 401 through a ball joint. The degree of freedom of the mechanism meets the degree of freedom requirement of spatial movement and will not get stuck at a certain position.

[0080] Step 4: When the outer ring panel group 4 is folded to a certain size, the first lifting device 3 of the lifting mechanism 2 stops working, and the locking tongue of the electric cylinder 503 is inserted into the locking hole of the folding locking seat 502 to complete the locking of the outer ring panel group 4 in the folded state.

[0081] The following describes in detail the process of changing the outer ring panel group 4 of the antenna from the folded state to the unfolded state:

[0082] Step 1: Start the electric cylinder 503, and withdraw the lock tongue of the electric cylinder 503 used for locking in the folded state on the outer panel group 4 from the locking hole of the folded locking seat 502, so that the 30 arc panel units 401 can move independently;

[0083] Step 2: Start the first lifting device 3 of the lifting mechanism 2, the moving plate 202 moves downward along the guide rail 8, and drives the 30 diagonal support rods 404 to move simultaneously, the curved panel unit 401 performs spatial rotation around the oblique axis 2032 of the flip seat 203, and the curved panel unit 401 is gradually unfolded;

[0084] Step 3: When the outer ring panel group 4 is fully unfolded, the first lifting device 3 stops working, the electric cylinder 503 is started, and the locking tongue of the electric cylinder 503 is inserted into the locking hole of the unfolding locking seat 501 to complete the locking of the outer ring panel group 4 in the unfolded state.

[0085] The workflow of the outer ring panel group 4 of the antenna changing from the expanded state to the folded state is opposite to the workflow of changing from the folded state to the expanded state, which will not be described in detail here.

[0086] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0087] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0088] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A fixed surface deployable antenna, characterized in that: include: A central body (1) having a first end and a second end along an axial direction; The lifting mechanism (2) comprises a fixed plate (201), a movable plate (202) and a first lifting device (3), wherein the fixed plate (201) is fixedly sleeved on the first end of the central body (1), and the movable plate (202) is movably sleeved outside the central body (1), and the first lifting device (3) is used to drive the movable plate (202) to approach or move away from the fixed plate (201); the edge of the fixed plate (201) is uniformly arrayed with a plurality of turning seats (203), and the edge of the movable plate (202) is uniformly arrayed with a plurality of first universal hinges (204), and the plurality of first universal hinges (204) correspond to the plurality of turning seats (203) one by one; the turning seat (203) comprises a base (2031) and an inclined shaft (2032) arranged on the base (2031), and the base (2031) is fixedly connected to the fixed plate (201); The outer ring panel group (4) comprises a plurality of arc panel units (401) uniformly distributed along the circumference of the fixed disk (201); the outer surface of each arc panel unit (401) is fixedly connected to a connecting rod (402); the other end of the connecting rod (402) is rotationally connected to one of the flip seats (203) via the inclined axis (2032); the outer surface of each arc panel unit (401) has a second universal hinge (403); the second universal hinge (403) and the corresponding first universal hinge (204) are connected via an inclined support rod (404); When the lifting device drives the movable disk (202) to move in a direction away from the fixed disk (201), the movable disk (202) pulls the diagonal support rod (404) to make the curved panel unit (401) rotate clockwise around the inclined axis (2032); when the lifting device drives the movable disk (202) to move in a direction close to the fixed disk (201), the movable disk (202) pushes the diagonal support rod (404) to make the curved panel unit (401) rotate counterclockwise around the inclined axis (2032); The outer ring panel group (4) has an expanded state and a folded state. When the outer ring panel group (4) is in the expanded state, the plurality of arc-shaped panel units (401) are expanded to form an umbrella surface; when the outer ring panel group (4) is in the folded state, the plurality of arc-shaped panel units (401) are staggered and folded. And a plurality of groups of locking components (5), each group of the locking components (5) is used to lock two adjacent curved panel units (401) in the expanded state, or to lock two adjacent curved panel units (401) in the folded state.

2. The fixed surface deployable antenna according to claim 1, characterized in that: The number of the curved panel units (401) is 24-30.

3. The fixed surface deployable antenna according to claim 2, characterized in that: A first preset angle α is formed between the oblique axis (2032) and the base (2031), and the first preset angle α satisfies: 20°≤α≤40°; The installation angle of each of the flip seats (203) on the fixed disk (201) must satisfy: the projection of the first oblique axis (2032) on the fixed disk (201) is a projection line segment L, the midpoint of the projection line segment is O, the tangent line on the fixed disk (201) passing through point O is T, the projection line segment L and the tangent line T form a second preset angle β, and the second preset angle β satisfies: 20°≤β≤40°.

4. The fixed surface deployable antenna according to claim 3, characterized in that: The number of the curved panel units (401) is 30, the first preset angle α=30°, and the second preset angle β=30.5°.

5. The fixed surface deployable antenna according to claim 1, characterized in that: The first lifting device (3) comprises a first driving motor (301), a power distribution system, and four first spiral lifts (302); Each of the first spiral elevators (302) comprises a first screw rod (3021) and a first nut (3022) connected to the first screw rod (3021); the first screw rod (3021) is vertically rotatably connected to the outer wall of the central body (1); the first nut (3022) is connected to the movable disk (202); the first driving motor (301) is used to drive the four first screw rods (3021) to rotate.

6. The fixed surface deployable antenna according to claim 5, characterized in that: The power distribution system comprises a first commutator (303) and two second commutators (304), wherein the first commutator (303) has a first input shaft (3031) and two first output shafts (3032); the second commutator (304) has a second input shaft (3041) and two second output shafts (3042); The first input shaft (3031) is connected to the motor shaft of the first drive motor (301), the two first output shafts (3032) are respectively connected to the second input shafts (3041) of the two second commutators (304), and each second output shaft (3042) is respectively connected to the input shafts of the two first screw elevators (302); The housing of the first commutator (303) and the housing of the second commutator (304) are both fixedly connected to the central body (1).

7. The fixed surface deployable antenna according to claim 1, characterized in that: The locking assembly (5) comprises an unfolding locking seat (501), a folding locking seat (502) and an electric cylinder (503), and each of the arc-shaped panel units (401) is fixedly connected with the unfolding locking seat (501), the folding locking seat (502) and the electric cylinder (503); When the outer circle panel group (4) is in the unfolded state, the electric cylinder (503) is started, and the locking tongue of the electric cylinder (503) is inserted into the locking hole of the unfolded locking seat (501) of the adjacent arc-shaped panel unit (401); When the outer circle panel group (4) is in the retracted state, the electric cylinder (503) is started, and the locking tongue of the electric cylinder (503) is inserted into the locking hole of the retracted locking seat (502) of the adjacent arc-shaped panel unit (401).

8. The fixed surface deployable antenna according to claim 1, characterized in that: The first universal joint (204) comprises an axle seat (2041) and a cross-axis universal joint (2042), wherein the axle seat (2041) is fixedly connected to the movable plate (202), and the cross-axis universal joint (2042) has two axle forks, one of which is rotatably connected to the axle seat (2041) and the other of which is connected to the first end of the diagonal support rod (404).

9. The fixed surface deployable antenna according to claim 1, characterized in that: The second universal joint (403) is a ball joint, comprising a ball seat and a ball head rotatably arranged in the ball seat, the ball seat is fixedly connected to the outer wall of the arc-shaped panel unit (401), and the ball head is connected to the second end of the diagonal support rod (404).

10. The fixed surface deployable antenna according to any one of claims 1 to 9, characterized in that: The fixed surface deployable antenna also includes an inner ring panel (6) and a second lifting device (7) for driving the inner ring panel (6) to rise and fall, the second lifting device (7) including four second spiral lifts (701) and four second drive motors (702); the upper end of the screw rod of the second spiral lift (701) is rotatably connected to the lower surface of the inner ring panel (6), and the nut of the second spiral lift (701) is fixedly connected to the central body (1).

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