Foldable feed-forward antenna

Abstract

The invention belongs to the technical field of communication, and particularly relates to a foldable feed-forward antenna. The reflecting surface and the feed source assembly are movably connected to the two ends of the bottom frame respectively, a back frame is arranged on the back face of the reflecting surface, and a polarization driving piece is arranged on the back frame; the first supporting piece comprises a first connecting frame and a first executing element, one end of the first connecting frame is movably connected to the bottom frame, the other end of the first connecting frame is fixedly connected with the back frame of the reflecting surface, one end of the first executing element is fixed to one end of the bottom frame, and the other end of the first executing element is fixed to the first connecting frame; the second supporting piece comprises a second execution element and a feed source support, one end of the feed source support is movably connected to the bottom frame, and the feed source assembly is fixed to the feed source support; and one end of the second execution element is fixed at the other end of the underframe, and the other end of the second execution element is fixed on the feed source bracket. The foldable feed-forward antenna is high in alignment precision, small in size and good in stability.

Description

Technical Field

[0001] The present invention belongs to the field of communication technologies, and particularly relates to a foldable feedforward antenna. Background Art

[0002] In the current field of communication technologies, feedforward antennas play a key role in fields such as satellite communication, radar detection, and antenna broadcasting due to their high directivity, high gain, and good beam control performance. However, traditional feedforward antenna designs often focus on ensuring high-precision alignment between the reflector and the feed source to achieve efficient energy focusing and transmission. To achieve this goal, most feedforward antennas adopt a fixed structural design, that is, the reflector and the feed source assembly are rigidly fixed together, and their relative positions or shapes cannot be easily changed, which limits their mobility and flexibility in practical applications. Specifically, fixed feed antennas have obvious deficiencies in the following aspects: First, they are bulky and non-foldable, resulting in many inconveniences during transportation, storage, and rapid deployment; Second, in harsh environmental conditions (such as strong winds, snow, etc.), the fixed structure may increase the risk of antenna damage and reduce its survivability; Finally, the fixed design restricts the adaptability of the antenna in different application scenarios and is difficult to meet diverse communication requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies and defects in the background art and provide a foldable feedforward antenna with high alignment accuracy, small volume, and good stability.

[0004] To solve the above technical problem, the technical solution proposed by the present invention is: A foldable feedforward antenna, comprising: A chassis; A reflector and a feed source assembly respectively movably connected to both ends of the chassis through a first support frame and a second support frame. A back frame is provided on the back of the reflector, and a polarization driving member is provided on the back frame for driving the reflector to rotate. The first support member includes a first connecting frame and a first actuating element. One end of the first connecting frame is movably connected to the chassis, and the other end is fixedly connected to the back frame of the reflector. One end of the first actuating element is fixed to one end of the chassis, and the other end of the first actuating element is fixed to the first connecting frame. The reflector is driven to be folded and stored on the chassis or unfolded and supported vertically on the chassis by the telescopic movement of the first actuating element. The second support member includes a second actuator and a feed support. One end of the feed support is movably connected to the chassis, and the feed assembly is fixed to the feed support. One end of the second actuator is fixed to the other end of the chassis, and the other end of the second actuator is fixed to the feed support. The telescopic movement of the second actuator drives the feed assembly to be folded and stored on the chassis or to be unfolded and supported vertically on the chassis.

[0005] In one embodiment, it further includes a first locking member and a second locking member. The first locking member is fixed to the chassis and is located near the first actuator. After the reflector is unfolded, the first locking member locks the position of the reflector in the vertical direction, and the second locking member locks the position of the reflector in the horizontal direction.

[0006] In one embodiment, the first locking member is a screw-lifting locking device. A clamping block is provided at the top of the screw-lifting locking device. A clamping groove is fixed on the horizontal cross bar of the first connecting frame. The screw-lifting locking device is screwed upward to fix and support the reflector by the cooperation of the clamping block and the clamping groove. The second locking member is an electric plug locking device.

[0007] In one embodiment, it further includes an electric plug locking device for the feed assembly. The electric plug locking device for the feed assembly is fixed to the chassis and is located near the second actuator. After the feed assembly is unfolded, it is locked by the electric plug locking device for the feed assembly.

[0008] In one embodiment, the polarization driving member includes a driving motor, a speed reducer, and a gear pair. The polarization driving member is connected to the reflector through the gear pair.

[0009] In one embodiment, both the first actuator and the second actuator are servo electric cylinders, hydraulic cylinders, or pneumatic cylinders.

[0010] In one embodiment, first limiting rods are provided on both sides of the chassis. When the reflector and the first connecting frame are folded and stored on the chassis, the reflector and the first connecting frame are limited and fixed by the two first limiting rods. A second limiting rod is provided in the middle of the chassis. When the feed assembly and the feed support are folded and stored on the chassis, the feed assembly and the feed support are limited and fixed by the second limiting rod.

[0011] In one embodiment, both the first connecting frame and the feed support are hinged to the chassis.

[0012] In one embodiment, it further includes a rotatable base fixed under the chassis. The rotatable base includes a triangular support frame and a rotating base fixed at one end of the triangular support frame.

[0013] In one embodiment, a vehicle-mounted locking member is provided at one end of the triangular support frame opposite to the rotating base for locking and fixing the foldable front-feed antenna on the transport vehicle.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: For the foldable front-feed antenna of the present invention, the first support member and the second support member are foldably and deployably arranged on the chassis, realizing the folding, storage and transportation of the reflector and the feed component. Since the reflector itself is relatively large in volume and weight, the polarization driving member is used to rotate the reflector polarimetrically, and it can rotate 90° during the folding and unfolding process, so that the reflector can be switched between the working state and the storage and transportation state. The first support member and the second support member can effectively support and protect the reflector and the feed component in the working state and the storage and transportation state of the reflector and the feed component, while reducing the occupied space, facilitating transportation and storage. It not only greatly improves the mobility and flexible deployment ability of the front-feed antenna, but also enhances its survivability in harsh environments, opening up a new path for the application of the front-feed antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of a foldable front-feed antenna in one embodiment; Figure 2 It is a schematic structural diagram of a foldable front-feed antenna in one embodiment; Figure 3 It is a schematic structural diagram of the second locking member of a foldable front-feed antenna in one embodiment; Figure 4 It is a schematic structural diagram of the first locking member and the first actuating element of a foldable front-feed antenna in one embodiment; Figure 5 It is a schematic diagram of the transportation state of a foldable front-feed antenna on a transport vehicle in one embodiment; Figure 6 It is a schematic diagram of the fixed state of a foldable front-feed antenna on a transport vehicle in one embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] For the convenience of understanding the present invention, the following will describe the present invention more comprehensively and in detail with reference to the accompanying drawings of the specification and the preferred embodiments. However, the protection scope of the present invention is not limited to the following specific embodiments.

[0018] Unless otherwise defined, all technical terms used hereinafter have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the scope of the present invention.

[0019] Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment, etc. used in the present invention can be obtained through market purchase or can be prepared by existing methods.

[0020] Please refer to Figures 1 to 6 , a foldable feedforward antenna, comprising: a chassis 1, a reflector 2 and a feed component 3 which are respectively movably connected to both ends of the chassis 1 through a first support member 4 and a second support member 5. A back frame 22 is provided on the back of the reflector 2, and a polarization driving member 24 is provided on the back frame 22 for driving the reflector 2 to rotate; wherein, the first support member 4 includes a first connecting frame 40 and a first actuator 42. One end of the first connecting frame 40 is movably connected to the chassis 1, and the other end is fixedly connected to the reflector 2. One end of the first actuator 42 is fixed to one end of the chassis 1, and the other end of the first actuator 42 is fixed to the first connecting frame 40. The reflector 2 is driven by the telescopic movement of the first actuator 42 to be folded and stored on the chassis 1 or to be supported vertically on the chassis 1 after being unfolded. The second support member 5 includes a second actuator 50 and a feed support 52. One end of the feed support 52 is movably connected to the chassis 1, and the feed component 3 is fixed to the feed support 52; one end of the second actuator 50 is fixed to the other end of the chassis 1, and the other end of the second actuator 50 is fixed to the feed support 52. The feed support 52 is driven by the telescopic movement of the second actuator 50 to be folded and stored on the chassis 1 or to be supported vertically on the chassis 1 after being unfolded. Specifically, both the first actuator 42 and the second actuator 50 are servo electric cylinders, hydraulic cylinders or pneumatic cylinders. Preferably, a servo electric cylinder actuator is used as the power source to drive the reflector 2 and the feed component 3 to perform the lodging and unfolding actions respectively. The precise control of the servo electric cylinder ensures the smoothness and reliability of the antenna during the above operations. One end of each of the first connecting frame 40 and the feed support 52 is hinged to the chassis 1, and the first connecting frame 40 and the feed support 52 are controlled to lie flat on the chassis 1 or to be vertically unfolded on the chassis 1 by the telescopic movement of the first actuator 42 and the second actuator 50. The first connecting frame 40 and the feed support 52 are made of steel pipes welded together. Preferably, the first connecting frame 40 and the feed support 52 form a certain inclination angle at the connection with the chassis 1 to better support the body on the chassis 1.

[0021] Specifically, in one embodiment, it further includes a first locking member 6 and a second locking member 7. The first locking member 6 and the second locking member 7 cooperate to lock the position of the reflecting surface 2 when the reflecting surface 2 is in the working state after being unfolded. The first locking member 6 is fixed on the chassis 1 and is located near the first actuating element 42. Specifically, after the reflecting surface 2 is unfolded, the first locking member 6 locks the position of the reflecting surface 2 in the vertical direction, and the second locking member 7 locks the position of the reflecting surface 2 in the horizontal direction.

[0022] Specifically, the first locking member 6 is a screw-lift locking device, and the body of the screw-lift locking device can rise or fall. A chuck 60 is provided at the top of the screw-lift locking device. A clamping groove 62 is fixed on the horizontal cross bar of the first connecting frame 40. After the screw-lift locking device spirally rises to near the bottom of the first connecting frame 40, the reflecting surface 2 is fixed and supported by the cooperation of the chuck 60 and the clamping groove 62. The second locking member 7 is an electric plug locking device.

[0023] In one embodiment, it further includes a feed component electric plug locking device 8. The feed component electric plug locking device 8 is fixed on the chassis 1 and is located near the second actuating element 50. When the feed component 3 needs to work, after the feed support 52 is unfolded, its position is locked by the feed component electric plug locking device 8, thereby locking the position of the feed component 3.

[0024] The second locking member 7 is an electric plug locking device, and its structure is similar to that of the feed component electric plug locking device 8. Both lock the positions of the reflecting surface 2 and the feed support 52 by electrically driving the plug on the body of the electric plug locking device and the feed component electric plug locking device 8 to insert into the pin holes located on the reflecting surface 2 and the feed support 52.

[0025] Through the above locking devices, the positions of the reflecting surface 2 and the feed component 3 can be locked more precisely, so as to achieve precise high-precision alignment of the reflecting surface 2 and the feed component 3, and realize efficient energy focusing and transmission.

[0026] In one embodiment, the polarization driving member 24 includes a driving motor, a speed reducer and a gear pair. The polarization driving member 24 is connected to the reflecting surface 2 through the gear pair. Through the setting of the polarization driving member 24, the reflecting surface 2 is enabled to have the ability of polarization rotation, so that the reflecting surface 2 rotates 90° in polarization from the working state to the storage state, and the long side of the reflecting surface 2 is arranged along the length direction of the chassis 1. When transported by a transport vehicle, it is consistent with the vehicle body direction to meet the highway boundary requirements.

[0027] Preferably, in an embodiment, first limiting rods 12 are provided on both sides of the chassis 1. When the reflecting surface 2 and the first connecting frame 40 are folded and stored on the chassis 1, the reflecting surface 2 and the first connecting frame 40 are limited and fixed by the two first limiting rods 12. A second limiting rod 14 is provided in the middle of the chassis 1. When the feed component 3 and the feed support 52 are folded and stored on the chassis 1, the feed component 3 and the feed support 52 are limited and fixed by the second limiting rod 14. During specific operation, since the volume of the reflecting surface 2 is much larger than that of the feed component 3, correspondingly, the volume of the first connecting frame 40 is larger than that of the feed support 52. When folding, the feed support 52 is first folded and stored on the chassis 1, and then the first connecting frame 40 and the reflecting surface 2 are folded and stored on the chassis 1.

[0028] In an embodiment, the foldable front-feed antenna further includes a rotatable base 9 fixed under the chassis 1. The rotatable base 9 includes a triangular support frame 90 and a rotating base 92 fixed at one end of the triangular support frame 90. The triangular support frame 90 is welded by square pipes. In an embodiment, a vehicle-mounted locking member 94 is provided at the end of the triangular support frame 90 opposite to the rotating base 92 for locking and fixing the foldable front-feed antenna on the transport vehicle. One end of the triangular support frame 90 is fixed to the chassis 1 by bolts and nuts, and the other end is fixed to the pitching arm of the rotating base 92. Preferably, the vehicle-mounted locking member 94 is a hand-operated locking seat, which realizes quick locking and enhances the anti-impact ability of the antenna during transportation.

[0029] The above foldable front-feed antenna can be used as a vehicle-mounted antenna, and of course, it can also be applied to other scenarios.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: For the foldable front-feed antenna of the present invention, the first support member 4 and the second support member 5 are foldably and deployably arranged on the chassis 1, realizing the folding, storage and transportation of the reflecting surface 2 and the feed component 3. Since the reflecting surface 2 itself has a relatively large volume and weight, the polarization driving member 24 is used to rotate the reflecting surface 2 polarizingly. During the folding and unfolding process, it can rotate 90°, enabling the reflecting surface 2 to switch between the working state and the storage and transportation state. The first support member 4 and the second support member 5 can effectively support and protect the reflecting surface 2 and the feed component 3 in both the working state and the storage and transportation state of the reflecting surface 2 and the feed component 3, while reducing the occupied space, facilitating transportation and storage. It not only greatly improves the mobility and flexible deployment ability of the front-feed antenna, but also enhances its survivability in harsh environments, opening up a new path for the application of the front-feed antenna.

Claims

1. A foldable feedforward antenna, characterized in that: include: chassis; A reflecting surface and a feed assembly are movably connected to two ends of the base frame through a first supporting frame and a second supporting frame respectively, a back frame is provided on the back of the reflecting surface, and a polarization driving member is provided on the back frame for driving the reflecting surface to rotate; The first support member includes a first connecting frame and a first actuator, one end of the first connecting frame is movably connected to the base frame, and the other end is fixedly connected to the back frame of the reflective surface, one end of the first actuator is fixed to one end of the base frame, and the other end of the first actuator is fixed to the first connecting frame, and the reflective surface is driven to be folded and stored on the base frame or to be supported on the base frame in a vertical direction after being unfolded through the telescopic movement of the first actuator; The second support member includes a second actuator and a feed bracket, one end of the feed bracket is movably connected to the base frame, and the feed assembly is fixed on the feed bracket; one end of the second actuator is fixed to the other end of the base frame, and the other end of the second actuator is fixed to the feed bracket, and the feed assembly is driven to be folded and stored on the base frame or to be supported on the base frame in a vertical direction after being unfolded through the telescopic movement of the second actuator.

2. The foldable feedforward antenna according to claim 1, characterized in that: It also includes a first locking member and a second locking member, wherein the first locking member is fixed on the base frame and is located near the first actuator. After the reflecting surface is unfolded, the first locking member locks the reflecting surface in the vertical direction, and the second locking member locks the reflecting surface in the horizontal direction.

3. The foldable feedforward antenna according to claim 2, characterized in that: The first locking member is a spiral lifting locking device, a clamping block is provided on the top of the spiral lifting locking device, a clamping slot is fixed on the horizontal cross bar of the first connecting frame, the spiral lifting locking device spirally rises and uses the clamping block and the clamping slot to cooperate to fix and support the reflecting surface, and the second locking member is an electric latch locking device.

4. The foldable feedforward antenna according to claim 1, characterized in that: It also includes an electric latch locking device for the feed assembly, which is fixed on the base frame and located near the second actuator. After the feed assembly is unfolded, it is locked by the electric latch locking device for the feed assembly.

5. The foldable feedforward antenna according to claim 1, characterized in that: The polarization driving component includes a driving motor, a reducer and a gear pair, and the polarization driving component is connected to the reflecting surface through the gear pair.

6. The foldable feedforward antenna according to claim 1, characterized in that: The first actuator and the second actuator are both servo electric cylinders, hydraulic cylinders or pneumatic cylinders.

7. The foldable feedforward antenna according to claim 1, characterized in that: A first limiting rod is provided on both sides of the base frame. When the reflecting surface and the first connecting frame are folded and stored on the base frame, the reflecting surface and the first connecting frame are limited and fixed by the two first limiting rods. A second limiting rod is provided in the middle of the base frame. When the feed assembly and the feed bracket are folded and stored on the base frame, the feed assembly and the feed bracket are limited and fixed by the second limiting rod.

8. The foldable feedforward antenna according to claim 1, characterized in that: The first connecting frame and the feed bracket are both hingedly connected to the base frame.

9. The foldable feedforward antenna according to claim 1, characterized in that: It also includes a rotatable base fixed under the base frame, and the rotatable base includes a triangular support frame and a rotating base fixed at one end of the triangular support frame.

10. The foldable feedforward antenna according to claim 9, characterized in that: A vehicle-mounted locking piece is provided at one end of the triangular support frame opposite to the rotating base, which is used to lock and fix the foldable forward feed antenna on the transport vehicle.

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