Double-path self-rotating radio frequency joint for millimeter wave antenna

Abstract

The application relates to the technical field of millimeter wave antennas, in particular to a double-path self-rotation radio frequency joint for a millimeter wave antenna, which comprises a center group, a bearing pressing plate is sleeved on the center group, a positioning bearing is sleeved on the center group, an outer shell is arranged on one side of the center group, a first frequency channel is arranged on the other side of the center group, a second frequency channel is arranged on one side of the outer shell, a ring groove is formed in the inner side of the bearing pressing plate, a sliding block is slidably connected in the ring groove, a limiting sliding block is fixedly connected to one end of the sliding block, a fixed plate is slidably connected to one side of the limiting sliding block, and an oiling pen is rotatably connected to one side of the fixed plate, and the oiling pen is used for smearing lubricating oil on the positioning bearing. During use, the positioning bearing at the rotating position can be automatically smeared with lubricating oil by the oiling pen, so that the normal operation is prevented from being affected by the jamming of the positioning bearing.

Description

Technical Field

[0001] This invention relates to the field of millimeter-wave antenna technology, specifically to a dual-channel self-rotating radio frequency joint for millimeter-wave antennas. Background Technology

[0002] A radio frequency (RF) rotary joint is a connecting device used to transmit radio frequency (RF) signals between two relatively rotating mechanisms. It is primarily used to ensure continuous microwave signal transmission from a continuously rotating platform to a fixed platform during continuous rotation. With the rapid development of modern radar, satellite communication, and electronic warfare systems, rotary joints have become indispensable key components in antenna systems. Based on their spatial rotational function, rotary joints can be classified into elevation rotary joints, azimuth rotary joints, and roll rotary joints. Based on the number of microwave transmission channels, they can be classified into single-channel rotary joints, dual-channel rotary joints, and multi-channel rotary joints. Among these, dual-channel and multi-channel rotary joints have significantly higher structural complexity than single-channel rotary joints, with their internal structures differing significantly depending on the number of channels.

[0003] Due to different operating environments, some existing equipment is used in outdoor environments with high temperature, high humidity, high dust, or heavy loads. This can lead to the loss of lubricating grease in the positioning bearing, resulting in rust and corrosion of the positioning bearing, which in turn can cause jamming during rotation. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-channel self-rotating radio frequency joint for millimeter-wave antennas, in order to solve the problem mentioned in the background art where, during the use of the prior art, due to different operating environments, some devices are used in high-temperature, high-humidity, high-dust, or heavy-load outdoor environments, which can lead to the loss of lubricating grease in the positioning bearing, resulting in rust and corrosion of the positioning bearing, and consequently causing jamming during rotation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dual-channel self-rotating radio frequency joint for millimeter-wave antennas, comprising a central assembly, a bearing pressure plate sleeved on the central assembly, a positioning bearing sleeved on the central assembly, a housing on one side of the central assembly, a first channel on the other side of the central assembly, a second channel on one side of the housing, an annular groove on the inner side of the bearing pressure plate, a sliding block slidably connected inside the annular groove, a limiting slider fixedly connected to one end of the sliding block, a fixing plate slidably connected to one side of the limiting slider, and an oiling pen rotatably connected to one side of the fixing plate, the oiling pen being used to apply lubricating oil to the positioning bearing.

[0006] Furthermore, the inside of the oiling pen is provided with a sealing groove, and a sealing rod is slidably connected inside the sealing groove. One end of the sealing rod is fixedly connected to a sliding ball.

[0007] Furthermore, a groove is provided on one side of the limiting slider, and a sliding rod is slidably connected inside the groove. One end of the sliding rod is fixedly connected to one side of the fixing plate.

[0008] Furthermore, a telescopic motor is fixedly installed on one side of the bearing pressure plate, and a fixed rod is fixedly connected to the power output end of the telescopic motor. A control ring is fixedly connected to one end of the fixed rod, and the control ring is slidably connected to the protrusion of the bearing pressure plate.

[0009] Furthermore, a spiral groove is provided on the inner side of the control ring, and the other end of the sliding rod is slidably connected to the inside of the spiral groove.

[0010] Furthermore, a limiting ring is fixedly connected to one side of the control ring, and a wave groove is provided inside the limiting ring, with the sliding ball slidably engaging with the wave groove.

[0011] Furthermore, a fixing block is fixedly connected to the other side of the fixing plate. The fixing block has an internal receiving groove and an air hole on one side. The air hole is connected to one end of the receiving groove.

[0012] Furthermore, a scraper is slidably connected inside the receiving groove, and a flexible plate is fixedly installed at one end of the scraper for spreading the lubricating oil.

[0013] Furthermore, the other end of the receiving groove is connected to an air pipe, and the other end of the air pipe is connected to the sealing groove.

[0014] The technical solution provided by this invention has the following advantages compared with the known prior art: I. This invention creates an annular groove on the inner side of the bearing pressure plate and sets up components such as a sliding block, a limiting slider, a fixing plate, and an oiling pen. In conjunction with a telescopic motor driving the control ring and the spiral groove, the oiling pen can automatically rotate and apply lubricating oil along the circumference of the positioning bearing. The entire lubrication process requires no manual intervention and can be started remotely at regular intervals or executed according to a set program. This effectively avoids problems such as grease loss, bearing corrosion, and rotational jamming caused by harsh environments such as high temperature, high humidity, and high dust. It significantly extends the equipment maintenance cycle and reduces manual maintenance costs. Second, this invention utilizes a sealing groove, sealing rod, and sliding ball inside the oiling pen, which slide in conjunction with a wave-shaped groove on a limiting ring. This allows the oiling pen to swing up and down while rotating around the bearing circumference, thereby expanding the width range of a single application and preventing the formation of lubrication dead zones. Furthermore, the fixed plate is equipped with a fixed block, a receiving groove, a scraper, and a flexible plate. Gas from the sealing groove is introduced into the receiving groove through an air pipe, driving the scraper and flexible plate to move in the opposite direction after oiling, evenly spreading the accumulated lubricating oil onto the bearing surface. The synergistic effect of the swinging application and secondary spreading ensures a consistent and uniform oil film thickness, preventing localized over-lubrication or under-lubrication, and improving the stability and reliability of bearing operation. Third, the oiling, swinging, leveling, and resetting actions of this invention are all driven by the same telescopic motor, and are synchronized through spiral grooves, wave grooves, and pneumatic transmission. No additional motors or sensors are required, resulting in a compact structure and low failure rate. After oiling, the oiling pen automatically detaches from the bearing surface, and the scraper and flexible plate retract, without causing any additional resistance or interference to the normal rotation of the positioning bearing. At the same time, the pneumatic circuit formed by the sealing groove, air pipe, and receiving groove can effectively prevent external dust and moisture from entering the lubrication area, further enhancing the equipment's adaptability to harsh environments and ensuring the long-term stability of millimeter-wave signal transmission. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic cross-sectional view of the central group structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the wave groove structure of the present invention; Figure 6 This is a schematic diagram of the limiting slider structure of the present invention; Figure 7 This is a cross-sectional view of the fixing plate structure of the present invention.

[0017] In the diagram: 1. Central assembly; 2. Bearing pressure plate; 3. Positioning bearing; 4. Housing; 5. First channel; 6. Second channel; 7. Annular groove; 8. Sliding block; 9. Restricting slider; 10. Fixing plate; 11. Oiling pen; 12. Sealing groove; 13. Sealing rod; 14. Sliding ball; 15. Slide groove; 16. Sliding rod; 17. Telescopic motor; 18. Fixing rod; 19. Control ring; 20. Spiral groove; 21. Restricting ring; 22. Wave slide groove; 23. Fixing block; 24. Receiving groove; 25. Air hole; 26. Air pipe; 27. Scraper; 28. Flexible plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] Example: A dual-channel self-rotating radio frequency joint for a millimeter-wave antenna, such as... Figures 1-7 As shown, the assembly includes a central group 1, a bearing pressure plate 2 fitted on the central group 1, a positioning bearing 3 fitted on the central group 1, a housing 4 on one side of the central group 1, a first channel 5 on the other side of the central group 1, a second channel 6 on one side of the housing 4, an annular groove 7 on the inner side of the bearing pressure plate 2, a sliding block 8 slidably connected inside the annular groove 7, and a limiting slider 9 fixedly connected to one end of the sliding block 8. The annular groove 7 restricts the position of the sliding block 8, preventing positional deviation when the sliding block 8 drives the limiting slider 9 to slide. A fixing plate 10 is slidably connected to one side of the limiting slider 9, and an oiling pen 11 is rotatably connected to one side of the fixing plate 10. It should be noted that the oiling pen 11 is existing technology, and its specific working principle will not be elaborated in detail. Professionals in this field can freely choose according to actual conditions. The oiling pen 11 is used to apply lubricating oil to the positioning bearing 3. It should be noted that when adding lubricating oil to the oiling pen 11, simply open the sealing port of the oiling pen 11 and add lubricating oil directly into the oiling pen 11.

[0021] The inside of the oiling pen 11 is provided with a sealing groove 12, and a sealing rod 13 is slidably connected inside the sealing groove 12. When the sealing rod 13 slides in the sealing groove 12, it can compress the air in the sealing groove 12. One end of the sealing rod 13 is fixedly connected to a sliding ball 14.

[0022] A groove 15 is provided on one side of the limiting slider 9. A sliding rod 16 is slidably connected inside the groove 15. The design of the groove 15 can limit the position of the sliding rod 16 and prevent the sliding rod 16 from shifting position during the sliding process. One end of the sliding rod 16 is fixedly connected to one side of the fixed plate 10. While the sliding rod 16 slides in the groove 15, it can drive the fixed plate 10 to slide together. At the same time, the fixed plate 10 and the limiting slider 9 will not separate.

[0023] A telescopic motor 17 is fixedly installed on one side of the bearing pressure plate 2. A fixed rod 18 is fixedly connected to the power output end of the telescopic motor 17. A control ring 19 is fixedly connected to one end of the fixed rod 18. The design of the telescopic motor 17 allows it to drive the fixed rod 18 and the control ring 19 to slide downwards together. The telescopic motor 17 provides power for the sliding of the fixed rod 18 and the control ring 19. The control ring 19 is slidably connected to the protrusion of the bearing pressure plate 2. Figure 3 The protruding design of the bearing pressure plate 2 can prevent the position of the control ring 19 from shifting.

[0024] A spiral groove 20 is provided on the inner side of the control ring 19. The other end of the sliding rod 16 is slidably connected to the inside of the spiral groove 20. Through the sliding of the sliding rod 16 and the spiral groove 20, when the telescopic motor 17 drives the fixed rod 18 and the control ring 19 to slide down, under the guidance of the spiral groove 20, the sliding rod 16 can drive the limiting slider 9, the fixed plate 10 and the oiling pen 11 to rotate together along the side of the positioning bearing 3, so that the oiling pen 11 can apply lubricating oil to the positioning bearing 3.

[0025] A limiting ring 21 is fixedly connected to one side of the control ring 19. The limiting ring 21 has a wave groove 22 inside. The sliding ball 14 is slidably engaged with the wave groove 22. The design of the wave groove 22 allows the paint pen 11 to slide along the wave groove 22 when it rotates. At the same time, under the guidance of the wave groove 22, the sliding ball 14 can drive the sealing rod 13 and the paint pen 11 to swing. This design allows the paint pen 11 to cover a larger area and improve the painting effect of the paint pen 11.

[0026] A fixing block 23 is fixedly connected to the other side of the fixing plate 10. The fixing block 23 has an internal receiving groove 24, and an air hole 25 is provided on one side of the fixing block 23. The air hole 25 communicates with one end of the receiving groove 24. Figure 7 The design of the air hole 25 allows the air in the receiving groove 24 to flow out through the air hole 25 when the scraper 27 slides upward, preventing jamming.

[0027] The inside of the receiving groove 24 is slidably connected to a scraper 27. A flexible plate 28 is fixedly installed at one end of the scraper 27. The flexible plate 28 is used to spread the lubricating oil. Through the design of the flexible plate 28, the flexible plate 28 can come into contact with the lubricating oil, so that the lubricating oil can be applied to the positioning bearing 3, further improving the application effect of the oiling pen 11.

[0028] The other end of the receiving groove 24 is connected to an air pipe 26, and the other end of the air pipe 26 is connected to the sealing groove 12. Figure 7 Through the design of the air pipe 26, when the sealing rod 13 slides down, it can guide the gas in the sealing groove 12 into the receiving groove 24. The receiving groove 24 is square in design, and the thrust of the gas can act on the entire scraper 27 to prevent the scraper 27 from getting stuck during the upward sliding process, so that the scraper 27 can slide into the receiving groove 24. It should be noted that the air pipe 26 is connected to the lower end of the receiving groove 24. Through this design, the gas can squeeze the lower part of the scraper 27 inside the receiving groove 24, so that the scraper 27 can slide into the receiving groove 24, thereby enabling the scraper 27 to drive the soft plate 28 to separate from the positioning bearing 3. It should be noted that when the scraper 27 slides to the top of the receiving groove 24, the protrusion of the scraper 27 will completely block the air hole 25. Through this design, the space below the protrusion of the scraper 27 is a sealed space, and there will be no air leakage, thus preventing the scraper 27 from sliding.

[0029] When lubricating oil needs to be added to the positioning bearing 3, the telescopic motor 17 can be remotely started. The telescopic motor 17 will pull the fixed rod 18 and the control ring 19 downwards to slide them. Figure 3 When the control ring 19 slides down, it can drive the spiral groove 20 to slide down together. At the same time, under the action of the spiral groove 20, it can drive the sliding rod 16 to slide in the groove 15 first. While the sliding rod 16 slides down, it can drive the fixing plate 10 and the oiling pen 11 to slide down together. Through this design, the oiling pen 11 can make contact with the positioning bearing 3, which is convenient for applying lubricating oil to the positioning bearing 3 later. At this time, the sliding rod 16 has slid to the lower end of the groove 15. At the same time, the telescopic motor 17 will continue to drive the fixed rod 18 and the control ring 19 to slide down, so that the sliding rod 16 can drive the limiting slider 9, the fixed plate 10, the oiling pen 11, the sealing rod 13, the sliding ball 14 and the fixed block 23 to rotate around one side of the positioning bearing 3 under the guidance of the spiral groove 20. This allows the oiling pen 11 to apply lubricating oil to the positioning bearing 3. During rotation, the sliding rod 16, the fixed plate 10, the oiling pen 11, the sealing rod 13, and the sliding ball 14 will cause the sliding ball 14 to slide within the wave groove 22. Guided by the wave groove 22, the sliding ball 14 can pull the sealing rod 13 to swing. While the sealing rod 13 swings, it can also cause the oiling pen 11 to swing. Through the swing of the oiling pen 11, when applying lubricating oil to the positioning bearing 3, the application area of ​​the oiling pen 11 can be increased, making the application path of the oiling pen 11 wider, so that the positioning bearing 3 can be fully lubricated. When the sliding rod 16 slides in the spiral groove 20, the control ring 19 will drive the limiting ring 21 to slide downward together. While the limiting ring 21 slides downward, it can drive the sliding ball 14 to slide downward together. While the sliding ball 14 slides downward, it can drive the sealing rod 13 to slide downward together, so that the sealing rod 13 can slide in the sealing groove 12. While the sealing rod 13 slides in the sealing groove 12, it can compress the gas in the sealing groove 12, so that the gas in the sealing groove 12 can enter the receiving groove 24 through the air pipe 26. After the gas enters the receiving groove 24, the scraper 27 can slide in the receiving groove 24, so that the scraper 27 and the soft plate 28 can slide upward, so that the soft plate 28 does not come into contact with the newly applied lubricating oil, allowing the lubricating oil to accumulate. After the oiling pen 11 has applied one circle of oil to the positioning bearing 3, the sliding rod 16 has slid to the end of the spiral groove 20. At this time, the telescopic motor 17 is activated, which pushes the fixed rod 18 and the control ring 19 upward. When the control ring 19 slides upward, it will drive the sliding rod 16 to slide to the upper end of the groove 15. Through this design, the oiling pen 11 can slide upward together, so that the oiling pen 11 can be separated from the positioning bearing 3. When the sliding rod 16 slides to the upper end of the groove 15, the control ring 19 will continue to slide upward, so that the sliding rod 16 can drive the fixed plate 10, the fixed block 23, the scraper 27 and the flexible plate 28 to reverse under the action of the spiral groove 20, so that the flexible plate 28 can apply the accumulated lubricating oil, so that the lubricating oil can be evenly applied to the positioning bearing 3. It should be noted that as the limiting ring 21 slides upward along with the control ring 19, it pulls the sealing rod 13 upward, creating a negative pressure in the sealing groove 12. This suctions the interior of the receiving groove 24, causing the scraper 27 to drive the flexible plate 28 downward. This allows the flexible plate 28 to gradually move closer to the positioning bearing 3. This design allows the accumulated lubricating oil to be spread more evenly on the positioning bearing 3, further improving the lubrication effect on the positioning bearing 3.

[0030] In this embodiment: By remotely starting the telescopic motor 17, the motor's power output end drives the control ring 19 to slide downwards via the fixed rod 18. Guided by the spiral groove 20 inside the control ring 19, the sliding rod 16 first slides along the groove 15 on the limiting slider 9, thereby causing the fixed plate 10 and the oiling pen 11 to move downwards together, making the oiling pen 11 contact the surface of the positioning bearing 3. Subsequently, the control ring 19 continues to move downwards, and the sliding rod 16, continuously guided by the spiral groove 20, drives the limiting slider 9, the fixed plate 10, the oiling pen 11, the sealing rod 13, and the sliding ball. The 14 and the fixing block 23 rotate circumferentially around the side of the positioning bearing 3, and the oiling pen 11 applies lubricating oil to the positioning bearing 3. At the same time, the sliding ball 14 slides in the wave groove 22 inside the limiting ring 21. The undulating trajectory of the wave groove 22 guides the sliding ball 14 to drive the sealing rod 13 and the oiling pen 11 to swing up and down, making the application path of the oiling pen 11 wider and the coverage area of ​​a single application larger. During the rotation and application of the oiling pen, the limiting ring 21 moves down synchronously, causing the sealing rod 13 to move in the sealing groove 12 inside the oiling pen 11. As the sealing rod 13 slides downwards, it compresses the air in the sealing groove 12. The air is then introduced into the receiving groove 24 inside the fixed block 23 via the air pipe 26. After entering from the lower end of the receiving groove 24, the gas compresses the area below the protrusion of the scraper 27, pushing the scraper 27 and its end flexible plate 28 upwards. This causes the flexible plate 28 to temporarily detach from the surface of the freshly applied lubricating oil, allowing the lubricating oil to accumulate fully on the surface of the positioning bearing 3. After the oiling pen 11 has completed one rotation along the positioning bearing 3, the sliding rod 16 has slid to the end of the spiral groove 20. At this time, the telescopic motor 17... Pushing the control ring 19 causes the sliding rod 16 to move upward along the slide groove 15, causing the oiling pen 11 to detach from the bearing surface. As the control ring 19 continues to move upward, the sliding rod 16, under the action of the spiral groove 20, causes the fixed block 23, scraper 27, and flexible plate 28 to reverse. At the same time, the sealing rod 13 moves upward, causing a negative pressure to be generated in the sealing groove 12. The air pipe 26 draws the air from the inside of the receiving groove 24, driving the scraper 27 and flexible plate 28 to gradually move downward and approach the positioning bearing 3. The flexible plate 28 evenly spreads the accumulated lubricating oil on the bearing surface, ensuring that the oil film thickness is consistent and the distribution is uniform.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-channel self-rotating radio frequency joint for a millimeter-wave antenna, comprising a central assembly (1), a bearing plate (2) sleeved on the central assembly (1), a positioning bearing (3) sleeved on the central assembly (1), a housing (4) disposed on one side of the central assembly (1), a first channel (5) disposed on the other side of the central assembly (1), and a second channel (6) disposed on one side of the housing (4), characterized in that: The bearing pressure plate (2) has an annular groove (7) on its inner side. A sliding block (8) is slidably connected inside the annular groove (7). A limiting slider (9) is fixedly connected to one end of the sliding block (8). A fixing plate (10) is slidably connected to one side of the limiting slider (9). An oiling pen (11) is rotatably connected to one side of the fixing plate (10). The oiling pen (11) is used to apply lubricating oil to the positioning bearing (3).

2. The dual-path self-rotating RF joint for a millimeter wave antenna according to claim 1, wherein: The inside of the oiling pen (11) is provided with a sealing groove (12), and a sealing rod (13) is slidably connected inside the sealing groove (12). One end of the sealing rod (13) is fixedly connected with a sliding ball (14).

3. The dual-path self-rotating RF joint for a millimeter-wave antenna according to claim 2, wherein: A groove (15) is provided on one side of the limiting slider (9), and a sliding rod (16) is slidably connected inside the groove (15). One end of the sliding rod (16) is fixedly connected to one side of the fixing plate (10).

4. The dual-path self-rotating RF joint for a millimeter-wave antenna according to claim 3, wherein: A telescopic motor (17) is fixedly installed on one side of the bearing pressure plate (2). A fixed rod (18) is fixedly connected to the power output end of the telescopic motor (17). A control ring (19) is fixedly connected to one end of the fixed rod (18). The control ring (19) is slidably connected to the protrusion of the bearing pressure plate (2).

5. The dual-path self-rotating RF joint for a millimeter-wave antenna according to claim 4, wherein: The inner side of the control ring (19) is provided with a spiral groove (20), and the other end of the sliding rod (16) is slidably connected to the inside of the spiral groove (20).

6. The dual-path self-rotating RF joint for a millimeter-wave antenna of claim 4, wherein: A limiting ring (21) is fixedly connected to one side of the control ring (19). A wave groove (22) is provided inside the limiting ring (21). The sliding ball (14) is slidably engaged with the wave groove (22).

7. A dual-channel self-rotating radio frequency joint for a millimeter-wave antenna according to claim 2, characterized in that: A fixing block (23) is fixedly connected to the other side of the fixing plate (10). The fixing block (23) has a receiving groove (24) inside. An air hole (25) is opened on one side of the fixing block (23). The air hole (25) is connected to one end of the receiving groove (24).

8. A dual-channel self-rotating radio frequency joint for a millimeter-wave antenna according to claim 7, characterized in that: The receiving groove (24) is slidably connected to a scraper (27), and a soft plate (28) is fixedly installed at one end of the scraper (27). The soft plate (28) is used to spread the lubricating oil.

9. A dual-channel self-rotating radio frequency joint for a millimeter-wave antenna according to claim 8, characterized in that: The other end of the receiving groove (24) is connected to an air pipe (26), and the other end of the air pipe (26) is connected to the sealing groove (12).

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