Automatic unfolding parabolic antenna with flexible surface and fixed surface combined

Abstract

The invention discloses an automatic unfolding parabolic antenna with a flexible surface and a fixed surface combined, and belongs to the field of antennas. The antenna comprises a center body, a reflecting surface, a folding driving mechanism, an annular adjusting mechanism, an auxiliary surface, an auxiliary surface supporting structure and a feed source, wherein a feed source supporting cylinder plays a role in overall supporting. Wherein the fixed surfaces and the flexible surfaces are arranged at intervals to form an antenna reflecting surface, when the system works, the folding driving mechanism adopts an electric unfolding and folding mode to realize full-automatic unfolding and folding actions of the reflecting surface, and after the antenna is unfolded, the surface shape precision of the flexible surfaces can be adjusted through the annular adjusting mechanism. The invention provides a flexible and fixed surface combined reflecting surface structure form for the first time, and full-automatic unfolding and folding of the whole reflecting surface are realized. A traditional manual assembly mode is broken through, the maneuvering performance of the large-diameter vehicle-mounted antenna is effectively improved, the antenna opening time is shortened to be within 15 minutes, and the position precision of the antenna when the antenna is unfolded again is guaranteed while the maneuvering performance is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of antennas, and in particular relates to an automatically deployable parabolic antenna combining a flexible and solid surface. Background Art

[0002] Vehicle-mounted antennas are mobile antenna systems installed on vehicle platforms. They offer advantages such as flexible mobility, high battlefield survivability, and the absence of a base. Currently, market demand is increasingly favoring more mobile antenna products, placing higher demands on deployment time and personnel. These installations require manual assembly and disassembly, which is labor-intensive and time-consuming, making this method inadequate for the high mobility demands of modern warfare. For mobile communications equipment, antenna weight and ease of installation are other key performance indicators in long-range combat. Conventional reflector antennas, often constructed of rigid panels, suffer from disadvantages such as high weight, high cost, and difficulty in installation, making them unsuitable for the mobility demands of future battlefield communications equipment. Therefore, developing products that allow for rapid deployment and retraction is crucial for further reducing antenna deployment and retraction time, saving manpower, and improving product competitiveness. Summary of the Invention

[0003] The technical problem solved by the present invention is to solve the problem of poor radial expansion and contraction maneuverability of an antenna reflector, and to provide an automatically deployable parabolic antenna that combines a flexible and solid surface.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] The invention discloses an automatically unfolding parabolic antenna combining a flexible and solid surface, wherein the solid surface and the flexible surface are arranged at intervals to form the main surface of the antenna.

[0006] Furthermore, it also includes a central body; the central body is installed at the bottom center of the main surface of the antenna; the bottom of each solid surface is hinged to the top edge of the central body.

[0007] Furthermore, it also includes an electric push rod; the base of the electric push rod is hinged to the side wall of the central body, and the end of the moving rod of the electric push rod is hinged to the back of the solid surface.

[0008] Furthermore, a back rib is provided on the back of the solid surface, and the end of the moving rod of the electric push rod is hinged on the back rib.

[0009] Furthermore, it also includes a pressure strip and a radial rib; the bottom end of the radial rib is hinged on the central body; the pressure strip and the radial rib clamp the flexible surface, wherein the radial rib is located on the back side of the flexible surface.

[0010] Furthermore, a drawstring is provided on the back side of each flexible surface, and both ends of the drawstring are respectively connected to the backs of the two adjacent solid surfaces; the radial ribs abut against the drawstring.

[0011] Furthermore, each flexible surface is provided with at least one group of pressure strips and radial ribs.

[0012] Furthermore, it also includes a U-shaped base, the pull rope passes through the lower half of the U-shaped base; the radial rib is located in the clamping groove of the upper half of the U-shaped base.

[0013] Furthermore, the U-shaped base support includes an integrally designed base support and side panels; the two side panels are arranged opposite to each other on the top of the base support to form a clamping groove, and each side panel is provided with an oblong hole; the radial rib is provided with an adjusting bolt, which passes through the oblong holes of the two side panels and is locked with the U-shaped base support.

[0014] Furthermore, the U-shaped base is provided with a transverse through hole; the pull rope is located in the through hole; the U-shaped base is also provided with a locking bolt, which extends from the bottom of the base to the transverse through hole and rests on the pull rope in the transverse through hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This is the first time in the field that a reflector structure that combines a flexible and solid surface has been proposed. It uses a "one-button" operation method to achieve fully automatic deployment and retraction of the entire reflector. This breaks through the traditional manual assembly and loading model, effectively improving the maneuverability of large-diameter vehicle-mounted antennas and shortening antenna deployment time to less than 15 minutes. While improving antenna maneuverability, it also effectively ensures the positioning accuracy of the antenna when it is deployed again. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of a flexible surface in an embodiment of the present invention;

[0020] Figure 4 2 is a schematic structural diagram of a solid surface in an embodiment of the present invention;

[0021] Figure 5 2 is a schematic structural diagram of a centrosome in an embodiment of the present invention;

[0022] Figure 6 yes Figure 3 Schematic diagram of the back structure.

[0023] Figure 7 This is a simplified diagram of the matching structure of the radial ribs and the U-shaped base in an embodiment of the present invention.

[0024] Figure 8 yes Figure 7 A simplified side view of the U-shaped base.

[0025] In the figure: 1. Solid surface; 2. Auxiliary surface and auxiliary surface support; 3. Flexible surface; 4. Center body; 5. Feed sleeve; 6. Electric push rod; 7. Radial ribs; 8. U-shaped base; 9. Back reinforcement; 10. Embedded steel shaft; 11. Pull rope; 8-1. Long round hole; 8-2. Adjustment bolt; 8-3. Horizontal through hole; 8-4. Locking bolt; 8-5. Base. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] A flexible and solid-surface, automatically deployable parabolic antenna comprises a central body, a reflector, a folding drive mechanism, a circumferential adjustment mechanism, sub-surfaces, a sub-surface support structure, and a feed source. The sub-surfaces are mounted on a feed source sleeve via the sub-surface support, which is mounted on the central body. The folding drive mechanism utilizes an electric motor to automatically deploy and retract the reflector. Once deployed, the circumferential adjustment mechanism allows for precise adjustment of the flexible surface's shape.

[0028] The antenna's reflector is a combination of a solid and flexible surface. The solid surface is constructed of a carbon fiber honeycomb sandwich structure with foam backing bonded to the back. The flexible surface is constructed of a reflective fabric woven from metal wire and aramid fiber. The flexible surface is bonded to the two adjacent solid surfaces.

[0029] The folding drive mechanism is set on the solid surface respectively, and the solid surface drive adopts the finished electric push cylinder, which has the in-position detection function and the self-locking function.

[0030] The circumferential adjustment mechanism adjusts and positions the radial ribs arranged in the radial direction of the parabola using the circumferential adjustment mechanism so that the radial ribs reach their respective theoretical positions, thereby ultimately achieving precision control of the entire flexible surface.

[0031] In the electric extension and retraction method, an electric push cylinder is arranged under the solid surface, and the solid surface drives the flexible surface to realize the overall storage and expansion of the antenna surface.

[0032] To adjust the surface shape precision, a high-strength pull rope (high-strength polyethylene fiber) is arranged on the back of the radial rib, and the height adjustment of the rib is achieved through a rigid adjustment piece.

[0033] The following are more specific embodiments:

[0034] like Figure 1-8As shown, a flexible and solid-surface combined automatically deployable parabolic antenna comprises a solid surface 1, a secondary surface and secondary support 2, a flexible surface 3, a central body 4, a feed sleeve 5, an electric push rod 6, and a U-shaped base 7. The feed support 5 is mounted on the central body 4, and the secondary surface / feed support 2 is fixed to the feed sleeve 5. The solid surface is hinged to the central body 4 via an embedded steel shaft 10. One end of the electric push rod is located on the central body, and the other end is connected to the back rib 9 of the solid surface. The electric push rod pushes the solid surface 1 to deploy, which in turn drives the flexible surface 3 to stow and deploy the entire antenna surface. The back of the flexible surface 3 is provided with radial ribs 8 in the radial direction of the parabola, and the front is provided with a pressure strip. The pressure strip and the radial ribs clamp the flexible surface. The U-shaped base 7 allows manual adjustment of the height of the radial ribs 8 to precisely adjust the shape of the flexible surface. When the antenna is stowed from the deployed state, the electric push rod pushes the solid surface 1, and by tightening the pull cord, the flexible surface 3 is stowed with a large retraction ratio.

[0035] The external structure of the solid surface is shown in the figure Figure 4 As shown, the projection shape of the single block is a rectangular structure, the back of the reflective surface is bonded with an embedded steel shaft 9, the end of the electric push rod 6 is connected to the back rib 9, and the solid surface 1 is connected to the central body 4 through the embedded steel shaft 10. The embedded steel shaft 10 can be bolted.

[0036] The electric push rod 6 has a built-in cam limit switch to detect when the electric push rod is in place. It also has a self-locking function to achieve the positioning and locking function of the panel in the working and storage positions. Since the electric push rod is a directly purchased Lim-Tek LAM8-S0, its structure will not be described in detail in this patent.

[0037] Reference Figures 6 to 8 The circumferential adjustment mechanism of this embodiment includes a pull rope, an adjustment bolt, a locking bolt, and a U-shaped base. A pull rope is provided on the back side of each flexible surface, and the two ends of the pull rope are respectively connected to the back of the two adjacent solid surfaces;

[0038] In this embodiment, each flexible surface is provided with 5 groups of pressure strips and radial ribs. The bottom end of the radial rib is hinged to the central body; the pressure strips and radial ribs clamp the flexible surface, wherein the radial ribs are located on the back side of the flexible surface. The radial ribs are pressed against the pull rope through the U-shaped base. The U-shaped base includes an integrally designed base and side panels; the two side panels are arranged opposite to each other at the top of the base to form a clamping groove, and each side panel is provided with an oblong hole, and the two oblong holes are directly opposite; an adjusting bolt is provided on the radial rib, which passes through the oblong hole of the left panel, the radial rib and the oblong hole of the right panel at one time and is then locked with the U-shaped base through a nut. The base of the U-shaped base is provided with a transverse through hole; the pull rope is located in the through hole; a locking bolt is also provided on the U-shaped base, which extends from the bottom of the base through the threaded hole of the base to the transverse through hole, and presses against the pull rope in the transverse through hole to achieve locking with the pull rope.

[0039] It should be noted that the above description is only an example of a preferred application of the present invention and is not intended to limit the scope of protection of the present invention. Any technical solution that adopts equivalent replacement or equivalent transformation is within the scope of protection of the present invention.

Claims

1. An automatically deployable parabolic antenna combining a flexible and solid surface, characterized in that: The solid surface (1) and the flexible surface (3) are arranged at intervals to form the main surface of the antenna.

2. The flexible and solid surface combined automatically deployable parabolic antenna according to claim 1, characterized in that: It also includes a central body (4); the central body is installed at the bottom center of the main surface of the antenna; the bottom of each solid surface is hinged to the top edge of the central body.

3. The flexible and solid surface combined automatically deployable parabolic antenna according to claim 2, characterized in that: It also includes an electric push rod (6); the base of the electric push rod is hinged to the side wall of the central body, and the end of the moving rod of the electric push rod is hinged to the back of the solid surface.

4. The flexible and solid surface combined automatically deployable parabolic antenna according to claim 3, characterized in that: The back of the solid surface is provided with a back rib (9), and the end of the moving rod of the electric push rod is hinged on the back rib.

5. The flexible and solid surface combined automatically deployable parabolic antenna according to claim 1, characterized in that: The device further comprises a pressure strip and a radial rib; the bottom end of the radial rib is hinged on the central body; the pressure strip and the radial rib clamp the flexible surface, wherein the radial rib is located on the back side of the flexible surface.

6. The flexible-solid combined automatically deployable parabolic antenna according to claim 5, characterized in that: A drawstring is provided on the back side of each flexible surface, and both ends of the drawstring are respectively connected to the backs of the two adjacent solid surfaces; the radial ribs are against the drawstring.

7. The flexible-solid combined automatically deployable parabolic antenna according to claim 5, characterized in that: Each flexible surface is provided with at least one group of pressure strips and radial ribs.

8. The flexible-solid combined automatically deployable parabolic antenna according to claim 6, characterized in that: It also includes a U-shaped bottom bracket, the drawstring runs through the lower half of the U-shaped bottom bracket; and the radial rib is located in the clamping groove of the upper half of the U-shaped bottom bracket.

9. The flexible-solid combined automatically deployable parabolic antenna according to claim 8, characterized in that: The U-shaped base bracket includes an integrally designed base bracket and side plates; the two side plates are arranged opposite to each other on the top of the base bracket to form a clamping groove, and each side plate is provided with an oblong hole; the radial rib is provided with an adjusting bolt, which passes through the oblong holes of the two side plates and is locked with the U-shaped base bracket.

10. The flexible-solid combined automatically deployable parabolic antenna according to claim 8, characterized in that: The U-shaped base is provided with a transverse through hole; the pull rope is located in the through hole; the U-shaped base is also provided with a locking bolt, which extends from the bottom of the base to the transverse through hole and rests on the pull rope in the transverse through hole.

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