Feed switching mechanism for rotary lifting

Abstract

The invention discloses a rotary lifting feed switching mechanism which comprises a rotary support, a rotor assembly and a rotary driving assembly, the rotor assembly and the rotary driving assembly are mounted on the rotary support, the rotary driving assembly drives the rotor assembly to be rotatably connected with the rotary support, and the rotor assembly comprises a lifting assembly and a polarization assembly used for mounting a feed source group. The polarization assembly is installed at the lifting end of the lifting assembly. According to the feed switching mechanism, the rotary driving assembly drives the rotor assembly to be rotationally connected with the rotary support, so that wheel-to-wheel feed switching is achieved, lifting and polarization movement is further achieved through the lifting assembly and the polarization assembly used for installing the feed source set, and wheel-to-wheel feed switching, lifting and polarization movement are combined into a whole; lifting and polarization motion is added on the basis of a traditional wheel conversion feed structure, the structure is simple, operation is convenient, and good working performance is achieved.

Description

Technical Field

[0001] This invention relates to the field of microwave antenna technology, and more specifically to a rotating lifting feed switching mechanism. Background Technology

[0002] Currently, most existing satellite antennas are single-band antennas. However, with technological advancements, multi-band antennas are required in some applications. While manual feed replacement can generally meet the requirements for small multi-band antennas, it is difficult to operate manually for large antennas due to the challenges in controlling precision. In such cases, electric feed switching is necessary, requiring strict control of positional accuracy to ensure optimal performance.

[0003] Patent CN106935974 discloses a vehicle-mounted electric eccentric wheel-type feeder switching mechanism, which includes a feeder switching bracket, a network bracket, and a drive mechanism. During feeder switching, the motor drives the gear transmission, rotating the feeder network bracket and causing the feeder to rotate around the axis of rotation, thus achieving feeder switching. However, this mechanism only moves in one direction, has a single function, and has certain limitations in its application. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a rotating lifting feeder mechanism.

[0005] To solve the above-mentioned technical problems, the present invention discloses a wheel-rotating lifting feed exchange mechanism, including a wheel-rotating bracket, a rotor assembly mounted on the wheel-rotating bracket, and a wheel-rotating drive assembly. The wheel-rotating drive assembly drives the rotor assembly to rotate and connect with the wheel-rotating bracket. The rotor assembly includes multiple lifting components and a polarization component for mounting a feed source group. The polarization component is mounted on the top of the lifting components.

[0006] Furthermore, the rotor assembly includes a drive wheel and a guide disc, the guide disc is pivotally connected to the drive bracket, the lower side of the drive wheel is rotatably supported by a shaft assembly, the lifting assembly is mounted on the upper side of the drive wheel, and the drive assembly is drively connected to the drive wheel.

[0007] Furthermore, the wheel drive wheel is a large wheel gear, and the wheel drive assembly includes a servo motor, a reducer, and a gear. The input shaft of the reducer is connected to the servo motor, and the gear is mounted on the output shaft. The gear meshes with the large wheel gear.

[0008] Furthermore, the reducer is a precision planetary reducer, and the gear is a backlash-free gear.

[0009] Furthermore, the lifting assembly includes a lifting base, a ball screw assembly, a first guide rod, and a lifting drive assembly. The lifting drive assembly is driven by the lead screw of the ball screw assembly. The nut of the ball screw assembly is disposed on the lifting base. The two ends of the first guide rod are connected to the wheel drive wheel and the wheel guide disc, and the middle part is vertically slidably connected to the lifting base.

[0010] Furthermore, it also includes a hollowed-out feed connection cylinder, the bottom of which is mounted on the lifting base. The feed connection cylinder is vertically slidably connected to the wheel guide plate, and the polarization component is mounted on the top of the feed connection cylinder.

[0011] Furthermore, the rotating guide disk is provided with a plurality of lifting guide components circumferentially located on the feed connecting cylinder. The lifting guide components include a lifting guide bearing seat, a bearing and a bearing fixing shaft. The bearing is sleeved on the bearing fixing shaft, the bearing fixing shaft is installed on the lifting guide bearing seat, and the bearing abuts against the outer wall of the feed connecting cylinder.

[0012] Furthermore, the polarization assembly includes a polarization mounting base, a polarization drive assembly mounted on the polarization mounting base, and a polarization shaft. The polarization shaft is pivotally connected to the polarization mounting base, and the polarization drive assembly is mounted on the polarization mounting base and is drively connected to the polarization shaft.

[0013] Furthermore, adapter plates are provided on both sides of the rotating bracket, and the adapter plates are provided with multiple connection holes.

[0014] Furthermore, the rotating guide plate is also equipped with a guide frame, a connecting plate, and a second guide rod. The two ends of the second guide rod are connected to the rotating guide plate and the connecting plate, respectively, and the middle part is vertically slidably connected to the guide frame.

[0015] Compared with the prior art, the advantages of the present invention are as follows: The feed-changing mechanism of this invention drives the rotor assembly to rotate and connect with the wheel-rotor support through the wheel-rotor drive assembly, thereby realizing wheel-rotor feed-changing. Furthermore, the lifting assembly and the polarization assembly for installing the feed source group realize lifting and polarization movement, thus combining wheel-rotor feed-changing, lifting and polarization movement into one unit. It adds lifting and polarization movement to the traditional wheel-rotor feed-changing structure, which is simple in structure, easy to operate and has good working performance. Attached Figure Description

[0016] The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention. In the drawings: Figure 1This is an isometric schematic diagram of the feeder mechanism for rotary lifting disclosed in a preferred embodiment of the present invention; Figure 2 This is an isometric schematic diagram of the rotor assembly disclosed in a preferred embodiment of the present invention; Figure 3 This is a cross-sectional schematic diagram of the rotating shaft assembly disclosed in a preferred embodiment of the present invention; Figure 4 This is a cross-sectional schematic diagram of the polarization component disclosed in a preferred embodiment of the present invention; Figure 5 This is a cross-sectional schematic diagram of the drive assembly disclosed in a preferred embodiment of the present invention; Figure 6 This is a cross-sectional schematic diagram of the wheel drive assembly disclosed in a preferred embodiment of the present invention; Figure 7 This is a schematic diagram of the installation of the top of the ball screw according to a preferred embodiment of the present invention; Figure 8 This is a schematic diagram of the installation of the bottom end of the ball screw according to a preferred embodiment of the present invention.

[0017] Legend: 1. Rotor assembly; 11. Polarization assembly; 111. Polarization drive assembly; 112. Polarization gear; 113. Polarization shaft; 114. Polarization mounting base; 115. Tapered roller bearing; 116. Polarization bearing cover; 12. Feed connecting cylinder; 13. Lifting base; 14. Ball screw assembly; 141. Deep groove ball bearing; 142. Screw bearing mounting base; 143. Angular contact bearing; 144. Screw bearing cover; 145. Screw bearing mounting base; 15. First guide rod; 151. Limiting ring; 16. Wheel-rotating gear; 17. Lifting drive assembly; 18. Wheel-rotating guide plate; 19. Lifting guide assembly; 191. Lifting guide bearing seat; 192. Bearing; 193. Bearing fixing shaft; 2. Rotary support frame; 3. Wheel drive assembly; 31. Servo motor; 32. Precision planetary reducer; 33. Backlash-free gear; 34. Wheel drive assembly mounting flange; 4. Gearbox mounting base; 5. Rotary shaft assembly; 51. Bottom rotating shaft of the wheel; 52. Rotary encoder; 53. Bottom fixed shaft of the wheel; 54. Roller bearing; 55. Round nut; 6. Adapter board; 7. Thin-walled angular contact bearings; 8. Guide frame; 9. Connecting plate; 10. Second guide rod. Detailed Implementation

[0018] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0019] like Figure 1-8 As shown in the figure, this invention discloses a wheel-rotating lifting feed mechanism, including a rotor assembly 1, a wheel-rotating bracket 2, a wheel-rotating drive assembly 3, a wheel-rotating reducer mounting base 4, a rotating shaft assembly 5, and an adapter plate 6. The rotor assembly 1 performs three main functions: wheel rotation, lifting, and polarization motion. Specifically, the large wheel-rotating gear 16 is fixed on the bottom wheel-rotating shaft 51 in the rotating shaft assembly 5. The bottom wheel-rotating shaft 51 is connected to the bottom wheel-rotating fixed shaft 53 via a roller bearing 54. The bottom wheel-rotating fixed shaft 53 is mounted on the bottom of the wheel-rotating bracket 2. A rotary encoder 52 is mounted on the outer ring of the bottom wheel-rotating shaft 51. During wheel rotation, the wheel-rotating drive assembly 3 (drive motor) fixed on the wheel-rotating bracket 2 drives the backlash-free gear 33 to rotate the large wheel-rotating gear 16. The large wheel-rotating gear 16 then drives the entire rotor assembly 1 to rotate, thereby placing the working feed source concentric with the reflecting surface. During the lifting motion, the lifting drive assembly 17 drives the ball screw assembly 14 to rotate, thereby lifting the lifting base 13 on the first guide rod 15 (in this embodiment, a bearing steel guide rail is used, with a limit ring 151 at the bottom) to complete the lifting motion. During the polarization motion, the polarization pinion in the polarization drive assembly 111 drives the polarization gear 112 to rotate, thereby driving the polarization shaft 113 to polarize. That is, the feed switching between different frequency bands first rotates the feed to the coaxial position of the reflector surface through the rotating gear 16, and then the lifting drive assembly 17 of the rotor assembly 1 lifts the feed to the working position. During the polarization motion, the three feed groups each have their own independent polarization adjustment mechanism, which works independently. When the incoming wave is linearly polarized, the polarization angle can be continuously adjusted from -10° to +100° through the polarization assembly 11 to complete the polarization angle alignment.

[0020] In this embodiment, the wheel support 2 is a rigid structure welded from square steel tubes and serves as the supporting and load-bearing component of the entire wheel feedback mechanism. The flanges welded on both sides of the wheel support 2 can be fixed to the central cylinder of the reflector through the adapter plate 6. A steel plate with a mounting hole for the wheel bottom shaft 51 is welded to the square steel tube at the bottom of the wheel support 2. The wheel bottom shaft 51 is installed in the mounting hole of the wheel bottom shaft 51 through a roller bearing 54. The bottom of the roller bearing 54 is limited by a round nut 55 sleeved on the wheel bottom shaft 51. The roller bearing 54 here can bear radial and axial loads at the same time and can limit the axial and radial displacement of the wheel bottom shaft 51, achieving backlash-free transmission. The rotary drive assembly 3 drives the large rotary gear 16 to rotate the bottom shaft 51, thereby causing the entire rotor assembly 1 to rotate, aligning the working feed source with the antenna reflector. A thin-walled angular contact bearing 7 is installed on the inner side of the top of the rotary support 2. This bearing, in conjunction with the rotary guide plate 18 on the upper part of the rotor assembly 1, ensures smoother and more stable rotation of the rotor assembly 1. The rotary support 2 uses a frame structure welded from square steel tubing for easier installation, maintenance, and debugging, while also reducing weight.

[0021] See Figure 5 In this embodiment, to ensure good reversing accuracy, the wheel drive assembly 3, consisting of a servo motor 31, a precision planetary reducer 32, a backlash-eliminating gear 33, and a wheel drive assembly mounting flange 34, forms the power source for the reversing mechanism. The wheel drive assembly 3 is mounted on the wheel reducer mounting base 4 via the wheel drive assembly mounting flange 34. The servo motor 31 has a built-in encoder that can monitor the motor position in real time. The input shaft of the precision planetary reducer 32 is connected to the output shaft of the servo motor 31, and the output shaft is equipped with a backlash-eliminating gear 33. The precision planetary reducer 32 has the advantages of low backlash and high transmission accuracy, while the backlash-eliminating gear 33 has a backlash-eliminating function, which can eliminate the transmission backlash with the large wheel gear 16. This ensures that the wheel drive assembly 3 accurately drives the large wheel gear 16 to rotate, realizing the reversing action. Simultaneously, a rotary encoder 52 is installed at the position of the rotating shaft assembly 5 to directly detect the end wheel rotation accuracy and feed it back to the controller. The controller feeds back the actual wheel rotation angle to the motor for compensation, achieving precise control of the reversing angle of the reversing mechanism.

[0022] In this embodiment, the rotor assembly 1 mainly includes a large rotating gear 16, a first guide rod 15, a lifting base 13, a ball screw assembly 14, a rotating guide disc 18, a feed connecting cylinder 12, a lifting drive assembly 17, a lifting guide assembly 19, and a polarization assembly 11. The rotor assembly 1 can realize lifting motion and polarization motion. The first guide rod 15, the lifting base 13, the lifting drive assembly 17, and the ball screw assembly 14 constitute the lifting assembly. The lifting assembly and the polarization assembly 11 are three sets in a one-to-one correspondence. The ball screw assembly 14 includes a screw and a nut with a helical fit. A lifting base 13 is equipped with three first guide rods 15 arranged in three groups on the circumference of the large gear 16. The lower end of the nut of the ball screw assembly 14 in the lifting base 13 is fixed in the screw bearing mounting seat 145 through the screw bearing cover 144 and the paired angular contact bearings 143. The screw bearing mounting seat 145 is installed in the mounting hole of the large gear 16. The three first guide rods 15 are lower... The feed connecting cylinder 12 is installed in the mounting holes around the ball screw assembly 14. The ball screw assembly 14 and the first guide rod 15 are combined into a whole by the lifting base 13. The feed connecting cylinder 12 is fixedly connected to the lifting base 13. The upper end of the ball screw assembly 14 is fixedly mounted in the screw bearing mounting seat 142 on the wheel guide plate 18 by a deep groove ball bearing 141. The upper end of the first guide rod 15 is directly fixed to the wheel guide plate 18, the middle part is vertically slidably connected to the lifting base 13, and the lower end is mounted on the wheel large gear 16. When the lifting drive assembly 17 drives the ball screw assembly 14 to rotate, the feed connecting cylinder 12 will follow the lifting base 13 to move linearly on the first guide rod 15, realizing the lifting movement of the feed, thereby lifting the feed to the working position.

[0023] In this embodiment, see Figure 6 Four lifting guide components 19 are arranged around the feed connecting cylinder 12 on the rotating guide disk 18. The lifting guide components 19 mainly consist of a lifting guide bearing seat 191, a bearing 192 (a deep groove ball bearing is used in this embodiment) and a bearing fixing shaft 193. The bearing 192 fits against the guide wall of the feed connecting cylinder 12 to play a guiding role.

[0024] In this embodiment, see Figure 4 A polarization assembly 11 is installed on the feed connecting cylinder 12. A polarization drive assembly 111 is installed on the polarization fixing seat 114 of the polarization assembly 11. The polarization shaft 113 drives the polarization gear 112 to rotate through the polarization drive assembly 111. A tapered roller bearing 115 is sleeved on the polarization shaft 113. The tapered roller bearing 115 is limited by the polarization bearing cover 116 sleeved on the bottom of the polarization shaft 113, thereby realizing polarization movement.

[0025] See Figure 2In this embodiment, the rotating guide disk 18 is also equipped with a guide frame 8, a connecting plate 9, and a second guide rod 10. The two ends of the second guide rod 10 are connected to the rotating guide disk 18 and the connecting plate 9, respectively, and its middle part is vertically slidably connected to the guide frame 8. Thus, one end of the guide frame 8 can slide in the vertical direction of the second guide rod 10, and the other end is connected to the feed connection cylinder 12. When the feed connection cylinder 12 is lifted, the guide frame 8 and the second guide rod 10 provide guidance. The guide frames 8 and the second guide rods 10 are three sets that cooperate with each other. The three guide frames 8 and the three second guide rods 10 are independent and do not work simultaneously. The connecting plate 9 serves to fix the three second guide rods 10.

[0026] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A rotating lifting feeder mechanism, characterized in that, It includes a wheel support (2) and a rotor assembly (1) mounted on the wheel support (2) and a wheel drive assembly (3). The wheel drive assembly (3) drives the rotor assembly (1) to rotate and connect with the wheel support (2). The rotor assembly (1) includes multiple lifting assemblies and a polarization assembly (11) for mounting a feed group. The polarization assembly (11) is mounted on the top of the lifting assembly.

2. The feeder mechanism for rotary lifting according to claim 1, characterized in that, The rotor assembly (1) includes a drive wheel and a guide disc (18). The guide disc (18) is pivotally connected to the wheel support (2). The lower side of the drive wheel is rotatably supported by a shaft assembly (5). The lifting assembly is installed on the upper side of the drive wheel. The drive assembly (3) is connected to the drive wheel via a transmission.

3. The feeder mechanism for rotary lifting according to claim 2, characterized in that, The wheel drive wheel is a large wheel gear (16). The wheel drive assembly (3) includes a servo motor (31), a reducer and a gear. The input shaft of the reducer (32) is connected to the servo motor (31), and the gear is installed on the output shaft. The gear meshes with the large wheel gear (16).

4. The feeder mechanism for rotary lifting according to claim 3, characterized in that, The reducer is a precision planetary reducer (32), and the gear is a backlash-free gear (33).

5. The feeder mechanism for rotary lifting according to claim 2, characterized in that, The lifting assembly includes a lifting base (13), a ball screw assembly (14), a first guide rod (15), and a lifting drive assembly. The lifting drive assembly is driven by the lead screw of the ball screw assembly (14). The nut of the ball screw assembly (14) is set on the lifting base (13). The two ends of the first guide rod (15) are connected to the wheel drive wheel and the wheel guide disc (18), and the middle part is vertically slidably connected to the lifting base (13).

6. The feeder mechanism for rotary lifting according to claim 5, characterized in that, It also includes a hollowed-out feed connection cylinder (12), the bottom of which is mounted on the lifting base (13), the feed connection cylinder (12) is vertically slidably connected to the wheel guide disk (18), and the polarization component (11) is mounted on the top of the feed connection cylinder (12).

7. The feeder mechanism for rotary lifting according to claim 6, characterized in that, The rotating guide disc (18) is provided with a plurality of lifting guide components (19) circumferentially arranged on the feed connecting cylinder (12). The lifting guide component (19) includes a lifting guide bearing seat (191), a bearing (192) and a bearing fixing shaft (193). The bearing (192) is sleeved on the bearing fixing shaft (193). The bearing fixing shaft (193) is installed on the lifting guide bearing seat (191). The bearing (192) abuts against the outer wall of the feed connecting cylinder (12).

8. The feeder mechanism for rotary lifting according to any one of claims 1-7, characterized in that, The polarization assembly (11) includes a polarization mounting base (114), a polarization drive assembly (111) mounted on the polarization mounting base (114), and a polarization shaft (113). The polarization shaft (113) is pivotally connected to the polarization mounting base (114), and the polarization drive assembly (111) is mounted on the polarization mounting base (114) and is drively connected to the polarization shaft (113).

9. The feeder mechanism for rotary lifting according to any one of claims 1-7, characterized in that, The rotating bracket (2) has adapter plates (6) on both sides, and the adapter plates (6) have multiple connection holes.

10. The feeder mechanism for rotary lifting according to any one of claims 2-7, characterized in that, The rotating guide plate (18) is also equipped with a guide frame (8), a connecting plate (9), and a second guide rod (10). The two ends of the second guide rod (10) are connected to the rotating guide plate (18) and the connecting plate (9) respectively, and the middle part is vertically slidably connected to the guide frame (8).

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