Ground tracking turntable for medium and low orbit satellites

Abstract

The utility model provides a medium and low orbit satellite ground tracking rotary table, which comprises an antenna body, a rotary table upright post, an X-axis box body and a Y-axis box body, and is characterized in that the X-axis box body is arranged at the top end of the rotary table upright post; a first central shaft and a second central shaft penetrate through the end faces of the X-axis box body and the Y-axis box body respectively, and the two ends of the first central shaft and the two ends of the second central shaft are rotationally matched with the X-axis supporting arm and the Y-axis supporting arm respectively; the Y-axis box body is fixed at the top end of the X-axis support arm; the antenna body is fixed at the top end of the Y-axis support arm; the X-axis box body drives the X-axis support arm to drive the Y-axis box body, the antenna body rotates around a first central shaft, and the Y-axis box body drives the Y-axis support arm to drive the antenna body to rotate around a second central shaft. According to the invention, the problem of overhead tracking of a tracking satellite is solved by using a two-axis orthogonal rotary table structure, and the installation of antenna bodies with different sizes can be realized by changing the counter weights of the X axis and the Y axis, the height of the rotary table stand column and the power of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of satellite antennas, and in particular to a ground tracking turntable for medium and low orbit satellites. Background Art

[0002] The satellite antenna is a device responsible for reflecting satellite signals to the feed and high-frequency head located at the focus. The satellite antenna must be aimed in the direction of the satellite to maintain uninterrupted signal transmission.

[0003] Mobile satellite antennas, due to the constant movement of their carriers, must constantly adjust their internal posture to maintain consistent alignment with the satellite. To achieve this, most existing satellite antennas typically utilize a combination of azimuth and elevation motion. However, when a mobile satellite antenna passes over the equator, azimuth-elevation turntables lack overhead tracking, resulting in interruptions in the satellite communication link.

[0004] In order to realize over-the-top tracking, a tilt axis is added to the azimuth-pitch two-dimensional turntable to realize over-the-top tracking. However, the turntable with the tilt axis generally has a smaller equivalent area of ​​antenna surface that can be installed, which is around 0.6m. 2 ~1.2m 2 , it is impossible to install a larger antenna surface.

[0005] For remote sensing and telemetry satellite antennas, due to the constant movement of medium and low orbit satellites, the satellite antenna must constantly adjust its internal posture to keep the antenna pointed in the direction of the satellite. Due to the movement cycle of medium and low orbit satellites, the satellite antenna will frequently "overhead" tracking. The antenna surface of this type of antenna is generally large, with an equivalent area of ​​1.8m 2 above.

[0006] In view of this, it is particularly important to design and manufacture a turntable that has overhead tracking capabilities and can adapt to different antenna surface sizes. Utility Model Content

[0007] Aiming at the problem in the prior art that it is impossible to install a large antenna when performing overhead tracking on medium and low-orbit satellites, the utility model proposes a medium and low-orbit satellite ground tracking turntable to solve the above problem.

[0008] The present application proposes a ground tracking turntable for medium and low-orbit satellites, including an antenna body and a turntable column, and also including an X-axis box body and a Y-axis box body arranged orthogonally, wherein the X-axis box body is arranged at the top of the turntable column; the end faces of the X-axis box body and the Y-axis box body are respectively penetrated by a first central axis and a second central axis, and the two ends of the first central axis and the second central axis are respectively rotated with the X-axis support arm and the Y-axis support arm; the Y-axis box body is fixed to the top of the X-axis support arm, and the antenna body is fixed to the top of the Y-axis support arm; the X-axis box body drives the X-axis support arm to drive the Y-axis box body and the antenna body to rotate around the first central axis, and the Y-axis box body drives the Y-axis support arm to drive the antenna body to rotate around the second central axis.

[0009] By adopting the above technical solution, the dual-axis design of X-axis and Y-axis enables the tracking turntable to achieve high-precision angle adjustment, accurately follow the trajectory of medium and low-orbit satellites, and ensure that the antenna body is always aligned with the satellite. The orthogonal XY two-axis structure can adapt to the installation of different equivalent antenna body sizes. The antenna body area is 1m 2 ~3.7m 2 , and can solve the overhead tracking problem at the same time.

[0010] In some specific embodiments, an X-axis motor and a Y-axis motor are respectively provided at the bottom of the X-axis box and the Y-axis box, and the output ends of the X-axis motor and the Y-axis motor are respectively matched with the first reducer and the second reducer.

[0011] By adopting the above technical solution, the first reducer and the second reducer are used to transmit the power of the X-axis motor and the Y-axis motor, and the high-speed, low-torque motor output of the motor is converted into a low-speed, high-torque output, which further improves the load capacity of the system and enables the tracking turntable to overcome greater resistance and weight, thereby achieving smooth rotation and positioning.

[0012] In some specific embodiments, the output ends of the first reducer and the second reducer pass through one end face of the X-axis box and the Y-axis box respectively, and respectively cooperate with the first small gear and the second small gear, and the first large gear and the second large gear are respectively engaged above the first small gear and the second small gear.

[0013] By adopting the above technical solution and utilizing the meshing transmission of large and small gears, the transmission path of motor power is optimized, the transmission efficiency is improved, and power loss is reduced. At the same time, the form of the small gear driving the large gear can achieve the effect of torque amplification, further enhancing the load capacity of the tracking turntable.

[0014] In some specific embodiments, the centers of the first large gear and the second large gear respectively cooperate with one end of the first central axis and the second central axis, and the diameter of the first large gear is greater than the diameter of the second large gear.

[0015] By adopting the above technical solution, when the loads to be borne by the X-axis box and the Y-axis box are different, the size relationship between the first large gear and the second large gear can effectively ensure that the X-axis box can simultaneously drive the Y-axis box and the antenna body to rotate.

[0016] In some specific embodiments, sealing covers for protecting gears are further provided on the end surfaces of the X-axis box body and the Y-axis box body, and holes are provided in the sealing covers corresponding to the positions of the first central axis and the second central axis.

[0017] By adopting the above technical solution, the gears are protected by a sealing cover to prevent rain and wind and sand from eroding the gears during system debugging, while not affecting the coordination between the first central axis, the second central axis and the X-axis support arm and the Y-axis support arm.

[0018] In some specific embodiments, fixed plates cooperating with the top of the X-axis support arm are further provided on both sides of the Y-axis box body, and a triangular reinforcing support portion is further provided between the fixed plate and the outer side surface of the Y-axis box body.

[0019] By adopting the above technical solution, the triangular reinforced support part is used to improve the connection strength between the Y-axis box and the fixed plate, avoiding the phenomenon of the fixed plate breaking due to long-term load, and improving the stability and reliability of the system.

[0020] In some specific embodiments, angle sensors and electrical limit switches are provided inside the X-axis housing and the Y-axis housing corresponding to the rotation directions of the first central axis and the second central axis.

[0021] By adopting the above technical solution, an angle sensor is used to detect the rotation angles of the first central axis and the second central axis, thereby improving the rotation accuracy of the tracking turntable. When the rotation reaches the limit angle, the electrical limit switch automatically stops the operation of the system to protect the antenna body from damage.

[0022] In some specific embodiments, mechanical buffers are provided on the outside of the X-axis box and the Y-axis box corresponding to the rotation directions of the first central axis and the second central axis, and buffer springs are provided inside the mechanical buffers.

[0023] By adopting the above technical solution, when the X and Y movement directions are out of control and exceed the limit, the X-axis arm and the Y-axis arm will hit the top of the mechanical buffer, thereby compressing the buffer spring. When the buffer spring is fully compressed, the X-axis arm and the Y-axis arm will stop rotating, ensuring that the movement of the tracking turntable is limited to a safe range.

[0024] In some specific embodiments, a first counterweight portion and a second counterweight portion are respectively provided at the bottom ends of the X-axis support arm and the Y-axis support arm, and a plurality of counterweight blocks are installed in the first counterweight portion and the second counterweight portion.

[0025] By adopting the above technical solution, a counterweight portion is provided to ensure the balance of the X-axis support arm and the Y-axis support arm during rotation, thereby improving the stability of the rotation process.

[0026] In some specific embodiments, the turntable column is formed by welding a round tube, and three supporting pipes are equidistantly provided around the central axis of the turntable column.

[0027] By adopting the above technical solution, the welded turntable column has high structural strength and stability. The three supporting pipes provide additional support, effectively enhancing the stability of the entire turntable column and reducing deformation and shaking under movement and load conditions.

[0028] This application primarily addresses the existing problem of being unable to install large antennas when over-the-head tracking is required for low- and medium-orbit satellites. This application proposes a ground-based tracking turntable for low- and medium-orbit satellites. The X-axis housing, Y-axis housing, X-axis support arm, Y-axis support arm, and turntable column are welded to reduce costs. The turntable structure, with two orthogonal axes, addresses the over-the-head tracking problem for tracking satellites. By varying the X- and Y-axis counterweights, the height of the turntable column, and the power of the motor, antennas of varying sizes can be installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many of the expected advantages of the embodiments will be readily apparent as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with respect to each other. Like reference numerals designate corresponding similar parts.

[0030] Figure 1 is a schematic structural diagram of a tracking turntable according to an embodiment of the present application;

[0031] Figure 2a Schematic diagram of the X-axis box structure according to an embodiment of the present application;

[0032] Figure 2b is a schematic cross-sectional view of an X-axis box according to an embodiment of the present application;

[0033] Figure 3a 2 is a schematic diagram of the Y-axis box structure according to an embodiment of the present application;

[0034] Figure 3b is a schematic cross-sectional view of a Y-axis box according to an embodiment of the present application;

[0035] Figure 4a is a schematic diagram of the X-axis support arm structure according to an embodiment of the present application;

[0036] Figure 4b It is a schematic diagram of the Y-axis support arm structure according to an embodiment of the present application.

[0037] The meaning of the numbers in the figure:

[0038] Antenna body 01, turntable column 02, X-axis box 03, Y-axis box 04, first center axis 05, second center axis 06, X-axis support arm 07, Y-axis support arm 08, support pipe 09, X-axis motor 10, first reducer 11, Y-axis motor 12, second reducer 13, first small gear 14, second small gear 15, first large gear 16, second large gear 17, fixing plate 18, reinforcement support part 19, angle sensor 20, first counterweight part 21, second counterweight part 22. DETAILED DESCRIPTION

[0039] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and are shown by way of illustrative specific embodiments in which the present invention may be practiced. In this regard, directional terms, such as "top," "bottom," "left," "right," "up," "down," etc., are used with reference to the orientation of the figures being described. Because the components of the embodiments may be positioned in several different orientations, directional terms are used for illustrative purposes and are in no way limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. The following detailed description should therefore not be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0040] This application proposes a ground tracking turntable for medium and low-orbit satellites. Figure 1 A schematic diagram of the tracking turntable structure according to an embodiment of the present application is shown. As shown in the figure, the tracking turntable includes an antenna body 01 and a turntable column 02, and also includes an X-axis box 03 and a Y-axis box 04 arranged orthogonally, and the X-axis box 03 is arranged at the top of the turntable column 02; the end faces of the X-axis box 03 and the Y-axis box 04 are penetrated by the first central axis 05 and the second central axis 06 respectively, and the two ends of the first central axis 05 and the second central axis 06 are respectively rotated with the X-axis support arm 07 and the Y-axis support arm 08; the Y-axis box 04 is fixed at the top of the X-axis support arm 07, and the antenna body 01 is fixed at the top of the Y-axis support arm 08; the X-axis box 03 drives the X-axis support arm 07 to drive the Y-axis box 04 and the antenna body 01 to rotate around the first central axis 05, and the Y-axis box 04 drives the Y-axis support arm 08 to drive the antenna body 01 to rotate around the second central axis 06.

[0041] Specifically, the Y-axis box 04 is arranged above the X-axis box 03 in an orthogonal manner, that is, the first central axis 05 and the second central axis 06 are also arranged in an orthogonal manner.

[0042] By adopting the above technical solution, the dual-axis design of X-axis and Y-axis enables the tracking turntable to achieve high-precision angle adjustment, accurately follow the trajectory of medium and low-orbit satellites, and ensure that the antenna body 01 is always aligned with the satellite. The orthogonal XY two-axis structure can adapt to the installation of different equivalent antenna body 01 sizes. The area of ​​antenna body 01 is 1m 2 ~3.7m 2 , and can solve the overhead tracking problem at the same time.

[0043] In some specific embodiments, mechanical buffers (not shown in the figure) are provided on the outside of the X-axis box 03 and the Y-axis box 04 corresponding to the rotation directions of the first central axis 05 and the second central axis 06, and buffer springs (not shown in the figure) are provided inside the mechanical buffers.

[0044] By adopting the above technical solution, when the X and Y movement directions are out of control and exceed the limit, the X-axis support arm 07 and the Y-axis support arm 08 will hit the top of the mechanical buffer, thereby compressing the buffer spring. When the buffer spring is fully compressed, the X-axis support arm 07 and the Y-axis support arm 08 will stop rotating, ensuring that the movement of the tracking turntable is limited to a safe range.

[0045] In some specific embodiments, the turntable column 02 is formed by welding a round tube, and three supporting pipes 09 are equidistantly provided around the central axis of the turntable column 02 .

[0046] By adopting the above technical solution, the welded turntable column 02 has high structural strength and stability. The three supporting pipes 09 provide additional support, effectively enhancing the stability of the entire turntable column 02 and reducing deformation and shaking under movement and load conditions.

[0047] Figure 2a : shows a schematic diagram of the X-axis box structure according to an embodiment of the present application, Figure 2b A cross-sectional schematic diagram of the X-axis box according to an embodiment of the present application is shown, as shown in FIG. Figure 1-2b As shown, an X-axis motor 10 is provided at the bottom of the X-axis box 03 , and the output end of the X-axis motor 10 cooperates with the first reducer 11 .

[0048] Figure 3a Schematic diagram of the Y-axis box structure according to an embodiment of the present application is shown. Figure 3b A cross-sectional diagram of the Y-axis box according to an embodiment of the present application is shown, as shown in FIG. Figure 1-3b As shown, a Y-axis motor 12 is provided at the bottom of the Y-axis box 04 , and the output end of the Y-axis motor 12 cooperates with the second reducer 13 .

[0049] Specifically, after the X-axis motor 10 and the Y-axis motor 12 of the present application are installed, the directions of their output ends are respectively the same as the first central axis 05 and the second central axis 06.

[0050] By adopting the above technical solution, the first reducer 11 and the second reducer 13 are used to transmit the power of the X-axis motor 10 and the Y-axis motor 12, and the high-speed, low-torque motor output of the motor is converted into a low-speed, high-torque output, thereby further improving the load capacity of the system, enabling the tracking turntable to overcome greater resistance and weight, thereby achieving smooth rotation and positioning.

[0051] In some specific embodiments, the output ends of the first reducer 11 and the second reducer 13 pass through one end face of the X-axis box 03 and the Y-axis box 04 respectively, and respectively cooperate with the first small gear 14 and the second small gear 15. The first large gear 16 and the second large gear 17 are respectively engaged above the first small gear 14 and the second small gear 15.

[0052] By adopting the above technical solution and utilizing the meshing transmission of large and small gears, the transmission path of motor power is optimized, the transmission efficiency is improved, and power loss is reduced. At the same time, the form of the small gear driving the large gear can achieve the effect of torque amplification, further enhancing the load capacity of the tracking turntable.

[0053] In some specific embodiments, the centers of the first large gear 16 and the second large gear 17 respectively cooperate with one end of the first central axis 05 and the second central axis 06 , and the diameter of the first large gear 16 is greater than the diameter of the second large gear 17 .

[0054] By adopting the above technical solution, when the loads to be borne by the X-axis box 03 and the Y-axis box 04 are different, the size relationship between the first large gear 16 and the second large gear 17 can effectively ensure that the X-axis box 03 can simultaneously drive the Y-axis box 04 and the antenna body 01 to rotate.

[0055] In some specific embodiments, sealing covers (not shown in the figure) for protecting gears are further provided on the end faces of the X-axis box 03 and the Y-axis box 04, and holes are provided in the sealing covers corresponding to the positions of the first central axis 05 and the second central axis 06.

[0056] By adopting the above technical solution, the gears are protected by a sealing cover to prevent rain and wind and sand from eroding the gears during system debugging, while not affecting the coordination between the first central axis 05, the second central axis and the X-axis support arm 07 and the Y-axis support arm 08.

[0057] In some specific embodiments, fixed plates 18 that cooperate with the top of the X-axis support arm 07 are further provided on both sides of the Y-axis box body 04, and a triangular reinforcing support portion 19 is further provided between the fixed plate 18 and the outer side surface of the Y-axis box body 04.

[0058] The Y-axis box 04 shown in the figure only has the fixing plate 18 on one side. In fact, the fixing plates 18 are symmetrically arranged on both sides of the Y-axis box 04.

[0059] By adopting the above technical solution, the triangular reinforcing support part 19 is used to improve the connection strength between the Y-axis box 04 and the fixed plate 18, avoiding the phenomenon of the fixed plate 18 breaking due to long-term load, and improving the stability and reliability of the system.

[0060] In some specific embodiments, angle sensors 20 and electrical limit switches (not shown in the figure) are provided inside the X-axis box 03 and the Y-axis box 04 corresponding to the rotation directions of the first central axis 05 and the second central axis 06.

[0061] By adopting the above technical solution, the angle sensor 20 is used to detect the rotation angles of the first center axis 05 and the second center axis 06, thereby improving the rotation accuracy of the tracking turntable. When it is about to rotate to the extreme angle, the electrical limit switch automatically stops the operation of the system to protect the antenna body 01 from damage.

[0062] Figure 4a : shows a schematic diagram of the X-axis support arm structure according to an embodiment of the present application, Figure 4b A schematic diagram of the Y-axis support arm structure according to an embodiment of the present application is shown in FIG. Figure 1-4b As shown, the bottom ends of the X-axis support arm 07 and the Y-axis support arm 08 are respectively provided with a first counterweight portion 21 and a second counterweight portion 22, and the first counterweight portion 21 and the second counterweight portion 22 are equipped with a plurality of counterweight blocks (not shown in the figure).

[0063] Specifically, the top ends of the X-axis support arm 07 and the Y-axis support arm 08 are bent inward for reinforcement, thereby increasing the support area and improving the support stability.

[0064] By adopting the above technical solution, the first counterweight part 21 and the second counterweight part 22 are set to ensure the balance of the X-axis support arm 07 and the Y-axis support arm 08 during the rotation process, and improve the stability of the rotation process. The choice of counterweight block can be selected according to the actual practical scenario.

[0065] In this application, the X-axis motor 10 and the Y-axis motor 12 can use the same motor, the angle sensors 20 in the X-axis box 03 and the Y-axis box 04 can also be the same, and the first reducer 11 and the second reducer 13 can use the same reducer, which not only facilitates production but also effectively reduces costs.

[0066] This application primarily addresses the existing problem of being unable to install large antennas when over-the-head tracking is required for low- and medium-orbit satellites. This application proposes a ground-based tracking turntable for low- and medium-orbit satellites. The components, including the X-axis housing 03, Y-axis housing 04, X-axis support arm 07, Y-axis support arm 08, and turntable column 02, are welded together to reduce costs. The turntable structure, with two orthogonal axes, addresses the over-the-head tracking problem for satellites. By varying the X- and Y-axis counterweights, the height of the turntable column 02, and the motor power, antennas 01 of varying sizes can be installed.

[0067] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and changes are within the scope of the claims of the present invention and their equivalents, the present invention is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that the combination of these measures cannot be used to advantage. Any reference signs in the claims should not be considered as limiting the scope.

Claims

1. A ground tracking turntable for medium and low orbit satellites, comprising an antenna body and a turntable column, characterized in that: It also includes an X-axis box and a Y-axis box arranged orthogonally, the X-axis box is arranged at the top of the turntable column; the end faces of the X-axis box and the Y-axis box are respectively penetrated by the first central axis and the second central axis, and the two ends of the first central axis and the second central axis are respectively rotatably cooperated with the X-axis support arm and the Y-axis support arm; the Y-axis box is fixed to the top of the X-axis support arm, and the antenna body is fixed to the top of the Y-axis support arm; the X-axis box drives the X-axis support arm to drive the Y-axis box and the antenna body to rotate around the first central axis, and the Y-axis box drives the Y-axis support arm to drive the antenna body to rotate around the second central axis.

2. The tracking turntable according to claim 1, characterized in that: An X-axis motor and a Y-axis motor are respectively provided at the bottom of the X-axis box body and the Y-axis box body, and the output ends of the X-axis motor and the Y-axis motor are respectively matched with the first reducer and the second reducer.

3. The tracking turntable according to claim 2, characterized in that: The output ends of the first reducer and the second reducer pass through one end face of the X-axis box and the Y-axis box respectively, and cooperate with the first small gear and the second small gear respectively. The first small gear and the second small gear are meshed with the first large gear and the second large gear respectively above.

4. The tracking turntable according to claim 3, characterized in that: The centers of the first large gear and the second large gear are matched with one end of the first central shaft and the second central shaft respectively, and the diameter of the first large gear is greater than the diameter of the second large gear.

5. The tracking turntable according to claim 4, characterized in that: The end surfaces of the X-axis box body and the Y-axis box body are further provided with sealing covers for protecting gears, and the sealing covers are provided with holes corresponding to the positions of the first central axis and the second central axis.

6. The tracking turntable according to claim 1, characterized in that: Both sides of the Y-axis box body are further provided with fixing plates that cooperate with the top end of the X-axis support arm, and a triangular reinforcing support portion is further provided between the fixing plate and the outer side surface of the Y-axis box body.

7. The tracking turntable according to claim 1, characterized in that: Angle sensors and electrical limit switches are provided inside the X-axis box and the Y-axis box corresponding to the rotation directions of the first central axis and the second central axis.

8. The tracking turntable according to claim 1, characterized in that: Mechanical buffers are further provided on the outside of the X-axis box and the Y-axis box corresponding to the rotation directions of the first central axis and the second central axis, and buffer springs are provided inside the mechanical buffers.

9. The tracking turntable according to claim 1, characterized in that: The bottom ends of the X-axis support arm and the Y-axis support arm are respectively provided with a first counterweight portion and a second counterweight portion, and a plurality of counterweight blocks are installed in the first counterweight portion and the second counterweight portion.

10. The tracking turntable according to claim 1, characterized in that: The turntable column is formed by welding a round tube, and three supporting pipes are equidistantly provided around the central axis of the turntable column.

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