Waveguide structure and pointing mechanism integrated two-dimensional pointing mechanism

Abstract

The invention provides a waveguide structure and pointing mechanism integrated two-dimensional pointing mechanism, which is characterized in that the two-dimensional pointing mechanism comprises two single-axis driving and signal transmission units; a driving shaft (2) of the single-shaft driving and signal transmission unit is fixedly connected with one end of a concentric-square-shaped rotary supporting frame (4), and a driven end rotary supporting bearing (72) of the single-shaft driving and signal transmission unit is connected with the other end of the concentric-square-shaped rotary supporting frame (4) in a matched mode. The two single-shaft driving and signal transmission units are assembled on the concentric-square-shaped rotation supporting frame (4) to form a cross-shaped two-dimensional pointing mechanism, and therefore space two-dimensional rotation pointing and a complete waveguide signal channel are achieved. The two-dimensional pointing machine has symmetry and can be mechanically and electrically connected with a satellite communication antenna and a satellite mounting base respectively.

Description

Technical Field

[0001] This invention relates to the fields of microwave transmission technology and space mechanisms, and in particular to a design that integrates an antenna waveguide structure with a two-dimensional pointing mechanism, which is suitable for scenarios such as satellite communication antennas and radar systems that require high-precision beam control and low weight. Background Technology

[0002] In traditional technology, antenna waveguides and pointing mechanisms are typically designed as separate units: the waveguide is responsible for electromagnetic wave transmission, while the pointing mechanism is independently mounted externally and connected via a flange. Furthermore, rotating parts require specific rotary joints for connection. This approach has the following drawbacks:

[0003] 1. Large size and weight: The split structure requires additional connecting parts and movable rotating joints, increasing the product size and weight;

[0004] 2. Accumulation of mechanical errors: poor coaxiality, beam pointing deviation or signal loss can easily occur at the interface due to assembly errors. Long-term operation will increase friction and wear, and reduce lifespan.

[0005] 3. Complex maintenance: The split structure requires frequent adjustments, resulting in high maintenance costs.

[0006] Therefore, integrating the antenna waveguide structure with the two-dimensional pointing mechanism into a single design, and removing redundant structures such as connecting structures and rotating joints, can significantly reduce the number of parts, reduce weight, reduce errors, reduce losses, reduce assembly and adjustment difficulty, and increase the rotational life of the mechanism. Summary of the Invention

[0007] The purpose of this invention is to provide a two-dimensional pointing mechanism that integrates an antenna waveguide structure and a two-dimensional pointing mechanism into a single integrated design. This innovation achieves the following improvements: reduced number of parts, reduced weight, reduced assembly errors, reduced losses, reduced assembly and adjustment difficulty, and increased rotational life of the mechanism.

[0008] The two-dimensional pointing mechanism integrating waveguide structure and pointing mechanism includes two single-axis drive and signal transmission units; the drive shaft (2) of the single-axis drive and signal transmission unit is fixedly connected to one end of the U-shaped rotary support frame (4), and the driven end rotary support bearing (72) of the single-axis drive and signal transmission unit is connected to the other end of the U-shaped rotary support frame (4). The two single-axis drive and signal transmission units are assembled on the U-shaped rotary support frame (4) to form a cross-shaped two-dimensional pointing mechanism, thereby realizing spatial two-dimensional rotation pointing and a complete waveguide signal path;

[0009] Preferably, the single-axis drive and signal transmission unit includes: a drive source (1), a drive shaft (2), an E-shaped rotary support frame (3), a rotary support and signal transmission shaft (5), a signal transmission shaft (6), a drive-end rotary support bearing (71), and a driven-end rotary support bearing (72); wherein, the fixed part of the drive source (1) is fixedly connected to the E-shaped rotary support frame (3); the rotary part of the drive source (1) is fixedly connected to the drive shaft (2), and the drive-end rotary support bearing (71) is installed on the drive shaft (2) to cooperate with the E-shaped rotary support frame (3) to improve the support stiffness; the rotary support and signal transmission shaft (5) is fixedly connected to the driven end of the E-shaped rotary support frame (3) according to the direction of the waveguide channel, and the driven-end rotary support bearing (72) is installed; the signal transmission shaft (6) is fixed together with the middle end of the E-shaped rotary support frame (3) to form another signal transmission channel.

[0010] Preferably, after the E-shaped rotary support frame (3), rotary support and signal transmission shaft (5), signal transmission shaft (6) and U-shaped rotary support frame (4) are assembled according to the assembly direction of the waveguide channel, a labyrinth channel will be formed at the gap fit, which will prevent foreign objects from entering the signal channel and suppress electromagnetic leakage of the signal, thereby forming a complete signal transmission channel.

[0011] Preferably, the E-shaped rotary support frame (3) and the U-shaped rotary support frame (4) have two waveguide channels directly machined inside them for transmitting and receiving signals, so that the waveguide structure and the mechanical structure can be integrated and reused.

[0012] Preferably, a waveguide channel with the same specifications as the E-shaped slewing support frame (3) and the U-shaped slewing support frame (4) is directly machined inside the slewing support and signal transmission shaft (5) and the signal transmission shaft (6) for signal transmission, so that the waveguide rotation joint and the slewing shaft can be integrated and reused.

[0013] The beneficial effects of this invention include:

[0014] 1. The waveguide and the connecting rotary joints are integrated with the two-dimensional pointing mechanism parts through integrated design, which greatly reduces the number of structural parts and fasteners, making the structure more compact, lighter, and lower in cost.

[0015] 2. The waveguide and the connecting rotary joint are integrated with the two-dimensional pointing mechanism parts through integrated design, which reduces the number of moving parts (such as bearings), reduces assembly difficulty, makes it easier to ensure assembly coaxiality, greatly enhances reliability and extends service life.

[0016] 3. The waveguide and the connecting rotary joints are integrated with the two-dimensional pointing mechanism parts through an integrated design. When the waveguide heats up, the entire frame can be used to dissipate heat from the waveguide, thus providing a larger heat dissipation area. When the waveguide generates a large amount of heat, there is no need to add waveguide heat dissipation fins or other heat dissipation structures.

[0017] 4. The waveguide and the connecting rotary joints are integrated with the two-dimensional pointing mechanism components through integrated design, which enhances the overall rigidity and improves the anti-damage performance during the satellite launch phase. Attached Figure Description

[0018] Figure 1(a) and Figure 1(b) are schematic diagrams and cross-sectional views of the two-dimensional pointing mechanism, respectively, showing the overall configuration;

[0019] Figure 2 : A cross-sectional view of the single-axis drive and signal transmission unit, showing the basic components of the two-dimensional pointing mechanism;

[0020] Figure 3 A three-dimensional cross-sectional view of the signal channel of the two-dimensional pointing mechanism, showing the waveguide path in the mechanism;

[0021] Figure 4 A three-dimensional cross-sectional view of an E-shaped rotary support frame component, showing two waveguide channels within the component;

[0022] Figure 5 A three-dimensional cross-sectional view of a U-shaped rotary support frame component, showing two waveguide channels within the component;

[0023] Figure 6 : A three-dimensional cross-sectional view of the slewing support and signal transmission shaft components, showing the waveguide channel in the components;

[0024] Illustration:

[0025] 1—Drive source; 2—Drive shaft; 3—E-shaped slewing support frame; 4—U-shaped slewing support frame; 5—Slewing support and signal transmission shaft; 6—Signal transmission shaft; 71—Drive end slewing support bearing; 72—Driven end slewing support bearing. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] As shown in Figure 1 and Figure 3The example shown provides a two-dimensional pointing mechanism that integrates a waveguide structure and a pointing mechanism, including two single-axis drive and signal transmission units; the drive shaft (2) of the single-axis drive and signal transmission unit is fixedly connected to one end of the U-shaped rotary support frame (4), and the driven end rotary support bearing (72) of the single-axis drive and signal transmission unit is connected to the other end of the U-shaped rotary support frame (4). The two single-axis drive and signal transmission units are assembled on the U-shaped rotary support frame (4) to form a cross-shaped two-dimensional pointing mechanism, thereby realizing spatial two-dimensional rotation pointing and a complete waveguide signal path.

[0028] like Figure 2 As shown, the single-axis drive and signal transmission unit includes: a drive source (1), a drive shaft (2), an E-shaped rotary support frame (3), a rotary support and signal transmission shaft (5), a signal transmission shaft (6), a drive end rotary support bearing (71), and a driven end rotary support bearing (72); wherein, the fixed part of the drive source (1) is fixedly connected to the E-shaped rotary support frame (3); the rotary part of the drive source (1) is fixedly connected to the drive shaft (2), and the drive end rotary support bearing (71) is installed on the drive shaft (2) to cooperate with the E-shaped rotary support frame (3) to improve the support stiffness; the rotary support and signal transmission shaft (5) is fixedly connected to the driven end of the E-shaped rotary support frame (3) according to the direction of the waveguide channel, and the driven end rotary support bearing (72) is installed; the signal transmission shaft (6) is fixed together with the middle end of the E-shaped rotary support frame (3) to form another signal transmission channel.

[0029] like Figure 3 As shown, after assembling the E-shaped rotary support frame (3), rotary support and signal transmission shaft (5), signal transmission shaft (6), and U-shaped rotary support frame (4) according to the assembly direction of the waveguide channel, a labyrinthine channel will be formed at the gap fit. This prevents foreign objects from entering the signal channel and suppresses electromagnetic leakage of the signal, thereby forming a complete signal transmission channel. This structure is symmetrical and is mechanically and electrically connected to the satellite communication antenna and the satellite mounting base, respectively.

[0030] like Figure 4 , Figure 5 and Figure 6 As shown, the E-shaped slewing support frame (3) and the U-shaped slewing support frame (4) not only have slewing support functions, but also have two waveguide channels (such as rectangular / circular waveguides) directly machined inside their respective frames for transmitting and receiving microwave signals, thus integrating the waveguides and the frame structure for multiplexing. A waveguide channel with the same specifications as the corresponding frame waveguide is directly machined inside the slewing support and signal transmission shaft (5) and signal transmission shaft (6), which is used both to install bearings and for microwave signal transmission, thus integrating the waveguide rotation joint and the slewing shaft for multiplexing.

[0031] This invention can be used in applications requiring high-precision beam control and low weight, such as satellite communication antennas and radar systems. It significantly reduces the number of parts, lowers weight, reduces errors, reduces losses, simplifies assembly and adjustment, and increases the rotational life of the mechanism.

[0032] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A two-dimensional pointing mechanism integrating a waveguide structure and a pointing mechanism, characterized in that, The two-dimensional pointing mechanism includes two single-axis drive and signal transmission units; the drive shaft (2) of the single-axis drive and signal transmission unit is fixedly connected to one end of the U-shaped rotary support frame (4), and the driven end rotary support bearing (72) of the single-axis drive and signal transmission unit is connected to the other end of the U-shaped rotary support frame (4). The two single-axis drive and signal transmission units are assembled on the U-shaped rotary support frame (4) to form a cross-shaped two-dimensional pointing mechanism, thereby realizing spatial two-dimensional rotation pointing and a complete waveguide signal path.

2. The two-dimensional pointing mechanism integrating waveguide structure and pointing mechanism according to claim 1, characterized in that, The single-axis drive and signal transmission unit includes: a drive source (1), a drive shaft (2), an E-shaped rotary support frame (3), a rotary support and signal transmission shaft (5), a signal transmission shaft (6), a drive-end rotary support bearing (71), and a driven-end rotary support bearing (72); wherein, The drive source (1) is fixedly connected to the E-shaped rotary support frame (3); The rotating part of the drive source (1) is fixedly connected to the drive shaft (2). The drive end rotary support bearing (71) is installed on the drive shaft (2) to cooperate with the E-shaped rotary support frame (3) to improve the support rigidity. The rotary support and signal transmission shaft (5) is fixedly connected to the driven end of the E-shaped rotary support frame (3) according to the direction of the waveguide channel, and the driven end rotary support bearing (72) is installed. The signal transmission shaft (6) is fixed together with the middle end of the E-shaped rotary support frame (3) to form another signal transmission channel.

3. A two-dimensional pointing mechanism integrating waveguide structure and pointing mechanism according to claims 1 and 2, characterized in that, After the E-shaped rotary support frame (3), rotary support and signal transmission shaft (5), signal transmission shaft (6) and the U-shaped rotary support frame (4) are assembled according to the assembly direction of the waveguide channel, a labyrinth channel will be formed at the gap fit. This will prevent foreign objects from entering the signal channel and suppress electromagnetic leakage of the signal, thereby forming a complete signal transmission channel.

4. A two-dimensional pointing mechanism integrating waveguide structure and pointing mechanism according to claims 1 and 2, characterized in that, Both the E-shaped rotary support frame (3) and the U-shaped rotary support frame (4) have two waveguide channels directly machined inside for transmitting and receiving signals, so that the waveguide structure and the mechanical structure can be integrated and reused.

5. A two-dimensional pointing mechanism integrating waveguide structure and pointing mechanism according to claims 1 and 2, characterized in that, Inside the slewing support and signal transmission shaft (5) and signal transmission shaft (6), a waveguide channel with the same specifications as the E-shaped slewing support frame (3) and the U-shaped slewing support frame (4) is directly machined for signal transmission, so that the waveguide rotation joint and the slewing shaft can be integrated and reused.

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