Satellite antenna rotary table seat frame in AE axis form and satellite antenna

Abstract

The invention provides a satellite antenna rotary table seat frame in an AE shaft form and a satellite antenna, the rotary table seat frame comprises an inclined shaft base, a connecting block and an orientation stand column, the inclined shaft base is provided with a vertical section and an inclined section at the top end of the vertical section, the vertical section and the orientation stand column are coaxially arranged, and the connecting block is arranged on the inclined section. The free end face of the inclined section is connected with the first end face of the connecting block, the second end face of the connecting block is used for being fixedly connected with the fixed face of the satellite main reflection face, and the included angle formed between the second end face and the first end face is equal to the included angle formed between the inclined section and the horizontal plane. The device further comprises an inclined shaft base rotation driving device and a connecting block rotation driving device, the inclined shaft base rotation driving device is used for driving the inclined shaft base to rotate around the central axis of the vertical section, and the connecting block rotation driving device is used for driving the connecting block to rotate around the central axis of the inclined section. According to the invention, the manufacturing cost is reduced, and the use reliability of the device can be remarkably improved due to the simplification of components.

Description

Technical Field

[0001] The present invention relates to the technical field of satellite antenna design, and particularly relates to a satellite antenna turntable pedestal and a satellite antenna in the form of an AE axis. Background Art

[0002] As a radio communication device, satellite antennas play a huge economic and social benefit. Due to the rise of various low-earth orbit constellation Internet systems, the overflight frequency of low-earth orbit satellites is getting higher and higher. The existing satellite antennas in the form of an AE axis (that is, having an azimuth axis and an elevation axis) cannot meet the requirement that the satellite orbit passes through the area about ±6° directly above the satellite antenna. In order to overcome the aforementioned deficiencies of the satellite antennas in the form of an AE axis, a set of skew axes is added to the satellite antennas in the form of an AE axis to form satellite antennas in the form of an AET axis (that is, having an azimuth axis, an elevation axis, and a tilt axis). Because a set of skew axes is added, the overall cost of the satellite antenna increases and the reliability decreases. The prior art also discloses an antenna pedestal in the form of an XY axis, but this form of satellite antenna has a naturally large torque, which causes great trouble in installing equipment on the back of the satellite antenna reflector surface. The disadvantages of this structure are particularly prominent in the gateway stations involved in the field of constellation Internet. Summary of the Invention

[0003] The satellite antenna turntable pedestal and the satellite antenna in the form of an AE axis designed by the present invention can overcome the deficiencies of the satellite antenna turntable pedestal in the form of an AET axis in the prior art, such as high manufacturing cost and low reliability.

[0004] The object of the present invention is to provide a satellite antenna turntable pedestal in the form of an AE axis, including a skew axis base, a connecting block, and an azimuth column for fixedly connecting with the ground foundation. Among them, the skew axis base has a vertical section and an inclined section at the top of the vertical section. The vertical section is coaxially arranged with the azimuth column. The free end face of the inclined section is connected to the first end face of the connecting block. The second end face of the connecting block is used for fixedly connecting with the fixed surface of the satellite main reflector. The included angle formed between the second end face and the first end face is equal to the included angle formed between the inclined section and the horizontal plane. It also includes a skew axis base rotation driving device and a connecting block rotation driving device. The skew axis base rotation driving device is used to drive the skew axis base to rotate around the central axis of the vertical section, and the connecting block rotation driving device is used to drive the connecting block to rotate around the central axis of the inclined section.

[0005] In some embodiments, the included angle formed between the second end face and the first end face is a, and 44° ≤ a ≤ 46°.

[0006] In some embodiments, a = 45°.

[0007] In some embodiments, the connecting block further has a third end face, an included angle is formed between the third end face and the second end face, and the first end face is between the second end face and the third end face such that the vertical cross-section of the connecting block is triangular, and the third end face is used for assembling the radio transceiver equipment box of the satellite antenna.

[0008] In some embodiments, the second end face is perpendicular to the third end face.

[0009] In some embodiments, the skew axis pedestal rotation driving device includes a first rotary motor and a first speed reducer. The first speed reducer is assembled between the top end face of the azimuth column and the vertical section, and the power output shaft of the first speed reducer is connected to the vertical section. The first rotary motor is used to drive the power output shaft of the first speed reducer to rotate.

[0010] In some embodiments, the connecting block rotation driving device includes a second rotary motor and a second speed reducer. The second speed reducer is assembled between the free end face of the inclined section and the first end face of the connecting block, and the power output shaft of the second speed reducer is connected to the connecting block. The second rotary motor is used to drive the power output shaft of the second speed reducer to rotate.

[0011] In some embodiments, the skew axis pedestal has a first hollow space, and both the first rotary motor and the second rotary motor are assembled in the first hollow space.

[0012] In some embodiments, the azimuth column has a second hollow space, and the second hollow space has an inspection opening that can be controllably communicated with the external environment.

[0013] The present invention also provides a satellite antenna, including a satellite main reflector and a turntable base assembled under the satellite main reflector. The turntable base is the satellite antenna turntable base in the form of the AE axis as described above.

[0014] The satellite antenna turntable pedestal and satellite antenna in the form of AE axis of the present invention, the satellite main reflector is assembled on the second end face which is set at a certain angle deviation from the first end face of the connection block, and at the same time, the rotation axis of the inclined axis pedestal and the rotation axis of the connection block are synchronously formed with the aforementioned angle, so that when the rotation drive device of the connection block operates, the satellite main reflector can smoothly pass over the top in a swinging, rotating and pitching manner. At the same time, the rotation drive device of the inclined axis pedestal can be controlled to rotate synchronously to compensate for the azimuth deviation generated during the swinging, rotating and pitching process of the satellite main reflector, so as to realize the real-time precise synchronous satellite tracking function of the satellite main reflector. In this technical solution, two axes can meet the functional requirements of the relevant turntable pedestal of the traditional AET three-axis satellite antenna. While reducing the manufacturing cost, due to the simplification of the components, the use reliability of the device can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a three-dimensional structural schematic diagram of a satellite antenna assembled with the satellite antenna turntable pedestal in the form of AE axis of the present invention. In this figure, the satellite main emission surface of the satellite antenna is in the state at 90°, that is, when passing over the top;

[0016] Figure 2 FIG. Figure 1 is a structural schematic diagram from another perspective;

[0017] Figure 3 FIG. Figure 1 is a schematic diagram of the state of the satellite main emission surface of the satellite antenna in FIG. when it is at 0°;

[0018] Figure 4 FIG. Figure 1 is a schematic diagram of the state of the satellite main emission surface of the satellite antenna in FIG. when it is at 30°;

[0019] Figure 5 FIG. Figure 1 is a schematic diagram of the state of the satellite main emission surface of the satellite antenna in FIG. when it is at 60°.

[0020] In the figure: 1, azimuth column; 11, inspection opening; 2, inclined axis pedestal; 21, vertical section; 22, inclined section; 3, connection block; 4, radio transceiver equipment box; 51, first rotary motor; 52, first reducer; 61, second rotary motor; 62, second reducer; 100, satellite main reflector; 200, turntable pedestal. DETAILED DESCRIPTION OF THE INVENTION

[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. In the figures, the thickness of regions and layers is exaggerated for clarity. Like reference numerals in the figures denote like or similar structures and thus their detailed description will be omitted.

[0022] The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present invention. However, those skilled in the art will realize that the technical solutions of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be employed. In other cases, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the present invention.

[0023] The following-described embodiments are of a satellite antenna turntable pedestal and a satellite antenna in the AE-axis form of the present invention. This example is only a part of the embodiments of the present invention, but the protection scope of the present invention is not limited thereto. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall be covered by the protection scope of the present invention.

[0024] Please refer to Figures 1 to 5 , according to an embodiment of the present invention, there is provided a satellite antenna turntable pedestal in the AE-axis form, including an inclined axis base 2, a connecting block 3, and an azimuth column 1 for fixedly connecting with a ground foundation (not shown and not labeled in the figure). Among them, the inclined axis base 2 has a vertical section 21 and an inclined section 22 at the top of the vertical section 21. The vertical section 21 is coaxially arranged with the azimuth column 1. The free end face of the inclined section 22 (i.e., Figure 1 the end face at the top in the shown orientation) is connected to the first end face (not labeled in the figure) of the connecting block 3. The second end face (not labeled in the figure) of the connecting block 3 is used for fixedly connecting with the fixed face (not labeled in the figure) of the satellite main reflector 100 (specifically, detachably connected by bolts). The included angle formed between the second end face and the first end face is equal to the included angle formed between the inclined section 22 and the horizontal plane, so that the position and attitude control of the satellite main reflector 100 is simpler and more accurate. It further includes an inclined axis base rotation driving device (not labeled in the figure) and a connecting block rotation driving device (not labeled in the figure). The inclined axis base rotation driving device is used to drive the inclined axis base 2 to rotate around the central axis of the vertical section 21, and the connecting block rotation driving device is used to drive the connecting block 3 to rotate around the central axis of the inclined section 22.

[0025] In this technical solution, the main satellite reflector 100 is assembled on the second end face which is disposed at a certain angle offset from the first end face of the connecting block 3. At the same time, the included angle is synchronously formed between the rotation axis of the inclined axis base 2 and the rotation axis of the connecting block 3, so that when the rotation driving device of the connecting block operates, the main satellite reflector 100 can smoothly pass over the top in a manner that forms the included angle with the rotation inclined axis, and at the same time, the rotation driving device of the inclined axis base (i.e., the azimuth axis) can be controlled to rotate synchronously to compensate for the azimuth offset deviation generated during the conical swing and rotation pitch of the main satellite reflector 100, thereby realizing the real-time precise synchronous star-tracking function of the main satellite reflector 100. In this technical solution, two axes can meet the functional requirements of the relevant turntable mounts of the traditional AET three-axis satellite antenna. While reducing the manufacturing cost, due to the simplification of the components, the use reliability of the device can be significantly improved.

[0026] The included angle formed between the second end face and the first end face is a. Theoretically, when a = 45°, the pitch angle of the turntable mount can meet the requirements of passing over the top and tracking the star. In order to reduce the requirements for machining accuracy and assembly accuracy, in some embodiments, the included angle formed between the second end face and the first end face is a, and 44° ≤ a ≤ 46° is sufficient.

[0027] In some embodiments, the connecting block 3 further has a third end face (not labeled in the figure). An included angle (which can be denoted as b) is formed between the third end face and the second end face, and the first end face is located between the second end face and the third end face so that the vertical cross-section of the connecting block 3 is triangular. The third end face is used to assemble the radio transceiver equipment box 4 of the satellite antenna. The aforementioned radio transceiver equipment box 4 is used to receive the radio signals transmitted by the satellite, and at the same time can transmit radio waves, enabling the satellite to receive the radio communication data transmitted from the ground.

[0028] In this technical solution, the vertical cross-section of the connecting block 3 is triangular, that is, the outer contour of the connecting block 3 is a triangular prism. The rotation axis of the connecting block 3 is perpendicular to the first end face, and the second end face and the third end face are respectively located on the opposite sides of the rotation axis. On the one hand, the mass of the radio transceiver equipment box 4 and the components assembled therein can form a moment balance for the overall mass of the main satellite reflector 100, thereby reducing the power (i.e., driving ability) requirements for the rotation driving device of the connecting block, further reducing the design and manufacturing cost of the device, and enabling the aperture of the main satellite reflector 100 in the present invention to be designed relatively larger (i.e., applicable to larger models of satellite antennas). On the other hand, the installation position of the radio transceiver equipment box 4 is closer to the main satellite reflector 100, and the distance between the radio transceiver equipment box 4 and the main satellite reflector 100 is shorter. After connecting the radio frequency cables, the cable loss is significantly reduced.

[0029] In a specific embodiment, the second end face is perpendicular to the third end face. At this time, the vertical cross-section of the corresponding connecting block 3 is an isosceles right triangle. At this time, the radio transceiver equipment box 4 and the satellite main reflector 100 are symmetric about the symmetry plane of the connecting block 3 on the left and right, and the moment balance effect is better, and the attitude control of the satellite main reflector 100 is more reliable. Correspondingly, the rotation axis of the connecting block 3 is on the symmetry plane of the foregoing connecting block 3.

[0030] As a specific embodiment, the inclined shaft base rotation driving device includes a first rotary motor 51 and a first speed reducer 52. The first speed reducer 52 is assembled between the top end face of the azimuth column 1 and the vertical section 21, and the power output shaft of the first speed reducer 52 (specifically, an RV speed reducer or a special speed reducer for robotic arms with a very large output shaft end face) is connected to the vertical section 21. The first rotary motor 51 is used to drive the power output shaft of the first speed reducer 52 to rotate; similarly, the connecting block rotation driving device includes a second rotary motor 61 and a second speed reducer 62. The second speed reducer 62 is assembled between the free end face of the inclined section 222 and the first end face of the connecting block 3, and the power output shaft of the second speed reducer 62 (specifically, an RV speed reducer or a special speed reducer for robotic arms with a very large output shaft end face) is connected to the connecting block 3. The second rotary motor 61 is used to drive the power output shaft of the second speed reducer 62 to rotate.

[0031] In this technical solution, by configuring a corresponding speed reducer to transmit and reduce the speed of the rotary motor, it can ensure that the attitude adjustment of the satellite main reflector 100 is more accurate and stable.

[0032] Specifically refer to Figure 2 As shown, in some embodiments, the inclined shaft base 2 has a first hollow space (not labeled in the figure), and both the first rotary motor 51 and the second rotary motor 52 are assembled in the first hollow space. It can be understood that the foregoing first hollow space should be a sealed closed space to achieve the purpose of protecting the components therein from water, dust, etc.

[0033] In this technical solution, by assembling the first rotary motor 51 and the second rotary motor 52 in the first hollow space of the inclined shaft base 2 at the same time, on the one hand, it can simplify the structural design of the turntable base, and on the other hand, it can utilize the self-weight of the first rotary motor 51 to increase the overall weight of the inclined shaft base 2, thereby realizing the mass balance of the overall inclined shaft base 2 for the load mass on the connecting block 3, and further improving the motion stability of the inclined shaft base 2 and the above components and the reliable stability of the overall structure of the turntable base.

[0034] In some embodiments, the azimuth column 1 has a second hollow space (not labeled in the figure), and the second hollow space has an inspection opening 11 (such as an assembled opening and closing door) that is controllably connected to the external environment, which is conducive to maintenance personnel to inspect the relevant components therein.

[0035] Taking the inclination angle of the inclined section 22 as 45°, that is, a = 45° as described above, the technical solution of the present invention is further elaborated as follows:

[0036] Since the angle between the satellite main reflector 100 and the 45° inclined shaft reducer (that is, the aforementioned second reducer 62) is 45°, when the 45° inclined shaft reducer rotates, the movement trajectory of the satellite main reflector 100 will present a rotation with an inclination angle of 45°, forming a 90° cone angle region along the rotation center of the 45° inclined shaft reducer. When the 45° inclined shaft reducer rotates, the 45° top connection plate (that is, the aforementioned connection block 3) can drive the angle between the satellite main reflector 100 and the end face of the azimuth shaft reducer (that is, the aforementioned first reducer 52) to gradually form an angle from parallel.

[0037] For a traditional AE-axis satellite antenna, the azimuth axis and the elevation axis form a 90° angle. When tracking the satellite orbit trajectory, only by corresponding the orbital azimuth angle and the elevation angle to the corresponding axes can the pointing be completed. When the inclined shaft reducer of the satellite antenna pedestal of the present invention rotates and causes an angle change between the satellite main reflector 100 and the end face of the azimuth shaft reducer, the pointing will deviate to one side. Therefore, it is necessary for the azimuth shaft reducer to correct the error caused by the pointing deviation under the drive of the azimuth motor (that is, the aforementioned first rotary motor 51), that is, the aforementioned compensation.

[0038] When the satellite main reflector 100 faces the sky at 90°, the system elevation angle is 90°. After the 45° inclined shaft reducer rotates 180° under the drive of the inclined shaft motor (that is, the aforementioned second rotary motor 61), the elevation angle of the satellite main reflector 100 is 0°, thereby realizing the AE structure elevation axis to drive the reflector to move from 0° to 90° (please refer to Figures 1 to 5 shown).

[0039] According to an embodiment of the present invention, there is also provided a satellite antenna, including a satellite main reflector 100 and a turntable pedestal 200 assembled under the satellite main reflector 100, and the turntable pedestal 200 is the satellite antenna turntable pedestal in the above AE-axis form.

[0040] It is easy for those skilled in the art to understand that, on the premise of no conflict, the advantageous technical features of the above various embodiments can be freely combined and superimposed.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A satellite antenna turntable mount in the form of an AE axis, characterized in that: The invention comprises an inclined axis base (2), a connecting block (3) and an azimuth column (1) for being fixedly connected to a ground foundation, wherein the inclined axis base (2) comprises a vertical section (21) and an inclined section (22) at the top of the vertical section (21), the vertical section (21) and the azimuth column (1) are coaxially arranged, the free end face of the inclined section (22) is connected to the first end face of the connecting block (3), the second end face of the connecting block (3) is used for being fixedly connected to the fixed surface of the satellite main reflection surface (100), the angle formed between the second end face and the first end face is equal to the angle formed between the inclined section (22) and the horizontal plane, and further comprises an inclined axis base rotation driving device and a connecting block rotation driving device, the inclined axis base rotation driving device is used to drive the inclined axis base (2) to rotate around the central axis of the vertical section (21), and the connecting block rotation driving device is used to drive the connecting block (3) to rotate around the central axis of the inclined section (22).

2. The satellite antenna turntable mount according to claim 1, characterized in that: The included angle formed between the second end surface and the first end surface is a, 44°≤a≤46°.

3. The satellite antenna turntable mount according to claim 2, characterized in that: a＝45°。 4. The satellite antenna turntable mount according to claim 1, characterized in that: The connection block (3) also has a third end face, the third end face forms an angle with the second end face, and the first end face is located between the second end face and the third end face so that the vertical cross-section of the connection block (3) is a triangle, and the third end face is used for assembling a radio transceiver equipment box (4) of the satellite antenna.

5. The satellite antenna turntable mount according to claim 4, characterized in that: The second end surface is perpendicular to the third end surface.

6. The satellite antenna turntable mount according to claim 1, characterized in that: The inclined axis base rotation driving device comprises a first rotary motor (51) and a first reducer (52), wherein the first reducer (52) is assembled between the top end surface of the azimuth column (1) and the vertical section (21), and the power output shaft of the first reducer (52) is connected to the vertical section (21), and the first rotary motor (51) is used to drive the power output shaft of the first reducer (52) to rotate.

7. The satellite antenna turntable mount according to claim 6, characterized in that: The connecting block rotation driving device comprises a second rotary motor (61) and a second reducer (62); the second reducer (62) is assembled between the free end face of the inclined section (222) and the first end face of the connecting block (3); and the power output shaft of the second reducer (62) is connected to the connecting block (3); the second rotary motor (61) is used to drive the power output shaft of the second reducer (62) to rotate.

8. The satellite antenna turntable mount according to claim 7, characterized in that: The inclined axis base (2) has a first hollow space, and the first rotary motor (51) and the second rotary motor (52) are both assembled in the first hollow space.

9. The satellite antenna turntable mount according to claim 1, characterized in that: The orientation column (1) has a second hollow space, and the second hollow space has an inspection port (11) that is controllably connected to the external environment.

10. A satellite antenna, comprising a satellite main reflection surface (100) and a turntable frame (200) assembled under the satellite main reflection surface (100), characterized in that: The turntable mount (200) is an AE-axis satellite antenna turntable mount according to any one of claims 1 to 9.

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