A large vehicular parabolic antenna which can be repeatedly folded and unfolded

Abstract

The application discloses a large-sized vehicle-mounted parabolic antenna capable of being repeatedly folded and unfolded, and particularly relates to the field of parabolic antennas. The large-sized vehicle-mounted parabolic antenna comprises a vehicle-mounted base, a yaw base, a pitch support, a parabolic antenna large base, antenna petals and an antenna back frame. The vehicle-mounted base is arranged on a special vehicle, the yaw base is arranged on the vehicle-mounted base, the pitch support is rotationally connected to the yaw base, the parabolic antenna large base is fixedly connected to the pitch support, an antenna feed source and a ring-shaped driving assembly located below the antenna feed source are arranged on the parabolic antenna large base, an embedding groove is formed in the parabolic antenna large base, a Hooke joint is rotationally connected to the embedding groove, the Hooke joint is connected with the antenna petals, the antenna petals are provided with hydraulic rods, and the hydraulic rods are connected between the ring-shaped driving assembly and the antenna petals. The application solves the problem that the parabolic antenna and the back frame cannot be quickly and flexibly assembled and disassembled, and the rotation folding and unfolding efficiency of the antenna petals is improved.

Description

Technical Field

[0001] This invention relates to the field of parabolic antennas, and particularly to a large vehicle-mounted parabolic antenna that can be repeatedly deployed and retracted. Background Technology

[0002] As major military powers worldwide accelerate the development of "all-dimensional intelligent perception systems" for battlefield operations, the role of reconnaissance, surveillance, and early warning systems, as well as battlefield information transmission systems, in modern warfare is becoming increasingly prominent. The establishment of all-dimensional intelligent perception systems relies heavily on various military radars. Military radars are characterized by all-weather, all-time operation, and high data rates over large airspace. Their most basic functions are radio detection and positioning. In different levels of combat systems, they can acquire real-time target information, real-time location, accurate target distance, probability of presence, and assess the operational environment.

[0003] As a crucial electronic equipment for target detection and intelligence gathering in modern warfare, the mobility of radar systems is paramount. Vehicle-mounted antennas, based on dedicated vehicle chassis, offer advantages such as rapid and flexible relocation, high battlefield survivability, and no need for base construction. These antennas can be moved at any time, quickly deployed across the battlefield, and coordinate with antennas mounted on satellites, aircraft, ships, and armored vehicles. Through distributed acquisition of intelligence, surveillance, and reconnaissance information, they form a comprehensive, full-spectrum, and all-time-domain multi-dimensional battlefield reconnaissance, surveillance, and early warning system, as well as a battlefield information transmission system. Furthermore, the demand for highly mobile antenna systems is increasingly widespread across various market sectors. A parabolic antenna is a single-reflector type antenna that utilizes an axisymmetric paraboloid of rotation as the primary reflector. The feed is placed at the focus of the paraboloid, typically a horn antenna or horn antenna array. During transmission, the signal radiates from the feed towards the paraboloid, is reflected, and then radiates into the air. Because the feed is located at the focus of the paraboloid, the radio waves, after reflection, radiate parallel to the parabolic normal. During reception, after reflection by the reflector, the radio waves converge to the feedhorn, allowing the feedhorn to receive the maximum signal energy. The ability to quickly and flexibly assemble and disassemble the rotating parabolic reflector and the backing frame has a significant impact on the mobility of the radar system. Summary of the Invention

[0004] The present invention aims to provide a large vehicle-mounted parabolic antenna that can be repeatedly deployed and retracted, solving the problem that parabolic antennas and back frames cannot be quickly and flexibly assembled and disassembled.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A reusable and deployable large vehicle-mounted parabolic antenna includes a vehicle-mounted base, a yaw base, an elevation support, a large base of the parabolic antenna, antenna lobes, and an antenna back frame. The vehicle-mounted base is mounted on a special vehicle. The vehicle-mounted base houses a first motor with its output shaft extending out of the base. The yaw base is mounted on the output shaft of the first motor. The yaw base houses a second motor and a reducer connected to the second motor. The output end of the reducer is connected to the elevation support via a rotating shaft. The pitch support is rotatably connected to the upper part of the yaw base, and the large base of the parabolic antenna is fixedly connected to the pitch support. An antenna feed and a ring drive assembly located below the antenna feed are installed on the large base of the parabolic antenna. The large base of the parabolic antenna has multiple circumferentially open slots, and each slot is rotatably connected to a Hooke hinge. An antenna lobe is connected to each Hooke hinge. A hydraulic rod is rotatably connected to the ring drive assembly on one side of the antenna lobe. The hydraulic rod is connected to the ring drive assembly and the antenna lobe in a ball joint.

[0006] Furthermore, it also includes two scissor lift mechanisms, which are symmetrically arranged on both sides of the vehicle base. Antenna back frames are detachably connected to the two scissor lift mechanisms. The antenna back frames cover the vehicle base and the yaw base. The antenna back frames are provided with connecting parts in the same direction as the number of antenna lobes. The antenna lobes are also provided with locking parts that cooperate with the connecting parts.

[0007] With the above configuration, the antenna lobe and antenna back frame can be quickly assembled and connected by means of the connecting and locking parts.

[0008] Furthermore, the locking part and the connecting part adopt a James hook that cooperates with each other. The pin inside the James hook is controlled by a cylinder for insertion and removal. The cylinder is electrically connected to a solenoid valve installed on the James hook.

[0009] With the above settings, a quick and stable connection can be achieved using the James hook. When unlocking is required, the cylinder can be restored simply by using the solenoid valve.

[0010] Compared with existing technologies, the beneficial effects of this solution are:

[0011] This solution uses a special vehicle chassis as the installation basis, realizing the rapid movement function of the parabolic antenna in space. By setting the rotation angle of the yaw base and the pitch support, the parabolic reflector can be pointed to 360° horizontally and 90° vertically. By controlling the rotation of the ring drive assembly, the extension and retraction of the hydraulic rod, and the various connecting hinges with the antenna lobe, the rotation and retraction of the antenna lobe can be realized. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the structure of a large vehicle-mounted parabolic antenna that can be repeatedly deployed and retracted in the retracted state according to the present invention.

[0013] Figure 2 This is a schematic diagram of the structure of a large vehicle-mounted parabolic antenna that can be repeatedly deployed and retracted according to the present invention in its deployed state;

[0014] Figure 3 This is a schematic diagram of the structure of the base of the parabolic antenna in this embodiment;

[0015] Figure 4 This is a schematic diagram of the structure of the base of the parabolic antenna in this embodiment;

[0016] Figure 5 This is a schematic diagram of the structure at the antenna lobe in this embodiment;

[0017] Figure 6 This is a schematic diagram of the structure of the antenna back frame locking part in this embodiment. Detailed Implementation

[0018] The present invention will be further described in detail below through specific embodiments:

[0019] The reference numerals in the accompanying drawings include: vehicle base 1, yaw base 2, pitch support 3, parabolic antenna base 4, antenna lobe 5, scissor lift mechanism 6, antenna back frame 7, antenna back frame lock 8, antenna feed 9, ring toothed ring 10, connecting lug 11, embedding slot 12, Hooke hinge 13, hydraulic rod 14.

[0020] Example

[0021] As attached Figures 1 to 6 As shown: A large, retractable vehicle-mounted parabolic antenna includes a vehicle-mounted base 1, a yaw base 2, an elevation support 3, a large base 4 for the parabolic antenna, antenna lobes 5, and an antenna back frame 7. The vehicle-mounted base 1 is mounted on a special vehicle and has a first motor with its output shaft extending from the top of the base. The yaw base 2 is fixedly mounted on the vehicle-mounted base 1 and is rotatably connected to it. The upper part of the yaw base 2 has a second motor and a reducer coaxially connected to the output shaft of the second motor. The output end of the reducer is connected to the elevation support 3 via a rotating shaft, and the elevation support 3 is rotatably connected to the yaw base 2.

[0022] The lower sidewall of the parabolic antenna base 4 is circumferentially rotatably connected to multiple hook-shaped antenna backrest locks 8. The distance between the free end of the antenna backrest lock 8 and the bottom of the parabolic antenna base 4 is slightly greater than the thickness of the top of the elevation support 3. Rubber pads are adhered to the free ends of the antenna backrest locks 8. Each antenna backrest lock 8 has a cylinder rotatably connected to one end near the parabolic antenna base 4, which is fixedly installed inside the parabolic antenna base 4. Thus, the parabolic antenna base 4 can be fixedly connected to the elevation support 3 by means of the antenna backrest locks 8. An antenna feed 9 and a ring drive assembly located below the antenna feed 9 are installed on the parabolic antenna base 4. In this embodiment, the antenna feed 9 is a high-gain feed 9, which is installed at the top center of the parabolic antenna base 4. The ring drive assembly includes a built-in third motor, a gear connected to the output shaft of the third motor, and a ring gear 10 meshing with the gear. The center of the parabolic antenna base 4 has a recessed groove, and one side of the groove has an opening for the gear to pass through. The ring gear 10 is rotatably connected to the groove of the parabolic antenna base 4. The bottom of the groove also has a sliding groove for the ring gear 10 to rotate. The outer wall of the ring gear 10 is circumferentially welded with 12 pairs of spaced connecting lugs 11. The upper edge of the base 4 of the parabolic antenna has 12 circumferentially oriented insertion slots 12. Each insertion slot 12 is rotatably connected to a Hooke hinge 13. The Hooke hinge 13 is a two-degree-of-freedom hinge, which allows the antenna lobe 5 to rotate around the tangent and normal of the arc of the base 4 of the parabolic antenna. Each Hooke hinge 13 is rotatably connected to an antenna lobe 5. One side of the antenna lobe 5 is provided with a hydraulic rod 14 rotatably connected to an annular gear ring 10. The hydraulic rod 14 is connected between the corresponding connecting lugs 11 by a pin. The piston rod of the hydraulic rod 14 is connected to the antenna lobe 5 by a ball joint. Each hydraulic rod 14 is ball-jointed on the edge of the same side of the corresponding antenna lobe 5.

[0023] The vehicle-mounted parabolic antenna also includes two scissor-lift mechanisms 6 mounted on special vehicles. These two scissor-lift mechanisms 6 are symmetrically arranged on both sides of the vehicle-mounted base 1. An antenna back frame 7 covers the vehicle-mounted base 1 and the yaw base 2. The antenna back frame 7 helps maintain the accuracy of the parabolic antenna profile and improves wind resistance. The antenna back frame 7 has the same number of connecting parts as the antenna lobes 5 circumferentially. Each antenna lobe 5 also has a locking part that cooperates with the connecting parts. The locking part and the connecting part use a matching Jencks hook. The pin inside the Jencks hook is controlled by a cylinder for insertion and removal, and the cylinder is controlled by a solenoid valve. Thus, the solenoid valve controls the opening or closing of the cylinder, thereby locking and unlocking the Jencks hook for convenient quick connection.

[0024] The working process of this plan:

[0025] In the retracted state, a large vehicle-mounted parabolic antenna that can be repeatedly retracted and extended has its yaw base 2 and elevation support 3 rotate to make the antenna feed 9 point horizontally towards the front of the special vehicle. The antenna lobe 5 is retracted above the base 4 of the parabolic antenna by the rotation of the ring drive assembly and the extension and retraction of the hydraulic rod 14. The scissor lift mechanism 6 retracts onto the special vehicle, and the antenna back frame 7 is mounted on the scissor lift mechanism 6.

[0026] When a large, retractable, vehicle-mounted parabolic antenna begins operation, the antenna lobe 5 unfolds through the rotation of the ring drive assembly and the extension and retraction of the hydraulic rod 14, forming a complete parabolic antenna. Then, the elevation support 3 rotates to make the antenna feed 9 point vertically upwards. Next, the scissor-lift mechanism 6 pushes the antenna back frame 7 upwards. When it reaches the designated position, the antenna back frame 7 can simultaneously lock with the 12 antenna back frame 7s on the back of the antenna lobe 5 and the 12 antenna back frame 7s on the lower edge of the parabolic antenna base 4. Locking the antenna back frame 7 with the antenna lobe 5 improves the wind resistance and surface accuracy of the parabolic antenna after the antenna lobe 5 is unfolded, enhancing the stability of this design. Then, the scissor-lift mechanism 6 descends back to its initial position, and the pointing of the parabolic antenna is adjusted by controlling the rotation angle of the yaw base 2 and the elevation support 3, thus commencing operation.

[0027] After a large, retractable vehicle-mounted parabolic antenna finishes its operation, the antenna is adjusted to point directly upwards by controlling the rotation angle of the yaw base 2 and the elevation support 3. The scissor lift mechanism 6 rises to a position that can support the antenna back frame 7. Simultaneously, the antenna back frame 7 is locked to the 12 antenna back frames 7 on the back of the antenna lobe 5 and the 12 antenna back frames 7 on the lower edge of the parabolic antenna base 4 are locked and unlocked. The scissor lift mechanism 6 lowers the antenna back frame 7 back to its initial position. The antenna lobe 5 is retracted by the rotation of the ring drive assembly and the extension and retraction of the hydraulic rod 14. The yaw base 2 and the elevation support 3 rotate to make the feed point horizontally towards the front of the special vehicle. The parabolic antenna retraction is then complete.

[0028] The above are merely embodiments of the present invention, and common knowledge such as specific structures and / or characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A large, retractable, vehicle-mounted parabolic antenna, characterized in that: The system includes a vehicle-mounted base, a yaw base, a pitch support, a parabolic antenna base, an antenna lobe, and an antenna back frame. The vehicle-mounted base is mounted on a special vehicle and houses a first motor with its output shaft extending out of the base. The yaw base is mounted on the output shaft of the first motor and houses a second motor and a reducer connected to the second motor. The output end of the reducer is connected to the pitch support via a rotating shaft. The pitch support is rotatably connected to the upper part of the yaw base. The parabolic antenna base is fixedly connected to the pitch support. An antenna feed and a ring-shaped drive assembly located below the antenna feed are mounted on the parabolic antenna base. The parabolic antenna base has multiple circumferentially oriented slots, each slot containing a Hooke hinge rotatably connected to an antenna lobe. One side of each antenna lobe has a hydraulic rod rotatably connected to the ring-shaped drive assembly, which connects the ring-shaped drive assembly to the antenna lobe. It also includes two scissor lift mechanisms, which are symmetrically arranged on both sides of the vehicle base. The two scissor lift mechanisms are detachably connected to an antenna back frame. The antenna back frame covers the vehicle base and the yaw base. The antenna back frame has a number of connecting parts in the same direction as the number of antenna lobes. The antenna lobes also have locking parts that cooperate with the connecting parts. The locking part and the connecting part adopt a James hook that cooperates with each other. The pin inside the James hook is controlled by a cylinder for insertion and removal. The cylinder is electrically connected to a solenoid valve installed on the James hook. When the parabolic antenna starts working, the antenna lobes unfold through the rotation of the ring drive assembly and the extension and retraction of the hydraulic rod, forming a complete parabolic antenna. Then, the elevation support rotates to make the antenna feed point vertically upwards. The scissor lift mechanism pushes the antenna back frame up. When it reaches the designated position, the antenna back frame is simultaneously locked with the antenna back frame lock on the back of the antenna lobes and the antenna back frame lock on the bottom edge of the parabolic antenna. Then, the scissor lift mechanism descends back to the initial position. By controlling the rotation angle of the yaw base and the elevation support, the pointing of the parabolic antenna is adjusted and it begins to work. After the parabolic antenna finishes its operation, the antenna is adjusted to point directly upwards by controlling the rotation angle of the yaw base and the elevation support. The scissor lift mechanism rises to a position that can support the antenna back frame. At the same time, the antenna back frame is locked on the back of the antenna lobe and unlocked on the lower edge of the large bottom of the parabolic antenna. The scissor lift mechanism lowers the antenna back frame back to its initial position. The antenna lobe is retracted by the rotation of the ring drive assembly and the extension and retraction of the hydraulic rod. The rotation of the yaw base and the elevation support makes the feed point horizontally towards the front of the special vehicle. The parabolic antenna retraction is then complete.

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