Hollow radar sealing slip ring

Abstract

The utility model discloses a hollow radar sealing slip ring, which belongs to the technical field of laser radars, and comprises a stator and a rotor, the stator comprises a shell with an open top surface, the inner bottom of the shell is fixedly connected with a mounting seat, the rotor comprises a top cover rotatably arranged on the top surface of the mounting seat, the bottom surface of the top cover is fixedly connected with a connecting block downwards, and the connecting block is fixedly connected with the top surface of the mounting seat. A mounting hole for placing the connecting block is formed in the middle of the mounting seat, and the middle of the bottom surface of the connecting block is electrically connected with the bottom surface of the mounting hole. According to the hollow radar sealing slip ring, the packing is matched with the detachable mounting plate, filling of a gap between the stator and the rotor and replacement after the packing is abraded are achieved, and the connecting position of the middle of the bottom face of the connecting block is isolated through the first sealing ring, the second sealing ring and the third sealing ring. The problems that the service life of the slip ring is affected and the environment is polluted due to abrasion are avoided, and the practicability and the safety of the device are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser radars, and in particular relates to a hollow radar sealing slip ring. Background Art

[0002] LiDAR is a radar system that uses laser beams to detect a target's position, velocity, and other characteristic parameters. It operates by transmitting a detection signal (a laser beam) toward the target and then comparing the received signal reflected from the target (the target echo) with the transmitted signal. After appropriate processing, it can obtain relevant target information, such as target range, direction, altitude, speed, attitude, and even shape. This allows it to detect, track, and identify targets such as aircraft and missiles.

[0003] The rotation of radar slip rings causes wear on adjacent components. This wear can cause conductive media to overflow or leak, shortening the slip ring's service life and causing environmental pollution. Furthermore, it can allow air or liquid to enter between the stator and rotor, corroding components. To address this issue, we propose a hollow radar sealed slip ring. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of unsatisfactory sealing effect of slip rings in the prior art, and to propose a hollow radar sealing slip ring.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A hollow radar sealing slip ring comprises a stator and a rotor, wherein the stator comprises a housing with an open top surface, and a mounting seat is fixedly connected to the bottom of the housing;

[0007] The rotor includes a top cover rotatably mounted on the top surface of the mounting seat, a connection block is fixedly connected downward to the bottom surface of the top cover, a mounting hole for placing the connection block is provided in the middle of the mounting seat, and the bottom surface of the connection block is electrically connected to the bottom surface of the mounting hole;

[0008] The top surface of the outer shell is higher than the top surface of the top cover, and the top surface of the outer shell is detachably connected to a mounting plate. The cavity surrounded by the mounting plate, the top cover and the outer shell is filled with packing. The top surface, the inner side surface and the inner bottom surface of the mounting seat are respectively provided with a first sealing ring, a second sealing ring and a third sealing ring.

[0009] Preferably, a flange is extended downward from the outer side of the bottom surface of the top cover, an end bearing is provided between the flange and the connecting block, and the rotor is rotatably connected to the top of the mounting seat through the end bearing.

[0010] Preferably, a conductive cavity is downwardly opened on the bottom surface of the mounting hole, and the mounting and connecting blocks are staggeredly fixed with conductive blocks located in the conductive cavity, and the conductive cavity is filled with a liquid conductive medium.

[0011] Preferably, an annular baffle is fixedly connected to the bottom surface of the mounting seat, and the baffle is sleeved on the outside of the conductive cavity, and an annular groove for inserting the baffle is opened on the bottom surface of the connecting block.

[0012] Preferably, the first sealing ring is located on the bottom surface of the flange.

[0013] Preferably, the third sealing ring is located on the inner side of the annular conductive cavity.

[0014] In summary, the technical effects and advantages of the utility model are as follows: the hollow radar sealing slip ring, through the packing and the detachable mounting plate, can fill the gap between the stator and the rotor, and replace the packing after wear. The first sealing ring, the second sealing ring, and the third sealing ring are used to isolate the middle connection of the bottom surface of the connecting block. Compared with the existing device, the problem of wear affecting the service life of the slip ring and causing environmental pollution is avoided, thereby improving the practicality and safety of the device.

[0015] In addition, the baffle and the annular groove confine the conductive medium in the conductive cavity to the inner side of the baffle, which can reduce the working pressure of the first sealing ring and the second sealing ring and improve the stability and service life of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a cross-sectional front view of the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] In the figure: 1. stator; 2. rotor; 3. housing; 4. mounting seat; 5. top cover; 6. connecting block; 7. mounting hole; 8. mounting plate; 9. packing; 10. first sealing ring; 11. second sealing ring; 12. third sealing ring; 13. flange; 14. end bearing; 15. conductive cavity; 16. conductive block; 17. baffle; 18. annular groove; 19. first conductor; 20. second conductor; 21. annular protrusion. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-3 A hollow radar sealing slip ring includes a stator 1 and a rotor 2. The stator 1 includes a shell 3 with an open top surface, and a mounting seat 4 is fixedly connected to the bottom of the shell 3.

[0022] The rotor 2 includes a top cover 5 rotatably mounted on the top surface of the mounting seat 4. A connecting block 6 is fixedly connected downward to the bottom surface of the top cover 5. A mounting hole 7 for placing the connecting block 6 is provided in the middle of the mounting seat 4. The bottom surface of the connecting block 6 is electrically connected to the bottom surface of the mounting hole 7.

[0023] The top surface of the outer shell 3 is higher than the top surface of the top cover 5, and the top surface of the outer shell 3 is detachably connected to the mounting plate 8 by bolts. The cavity surrounded by the mounting plate 8, the top cover 5 and the outer shell 3 is filled with packing 9, and the top surface, inner side surface and inner bottom surface of the mounting seat 4 are respectively provided with a first sealing ring 10, a second sealing ring 11 and a third sealing ring 12.

[0024] This hollow radar sealing slip ring also includes a first conductor 19 and a second conductor 20. The first conductor 19 is fixedly connected to the top surface of the top cover 5, and the second conductor 20 is fixedly connected to the outer surface of the housing 3. The first conductor 19 and the second conductor 20 are electrically connected to the bottom surface of the mounting hole 7 via the bottom surface of the connecting block 6. During use, the stator 1 and the rotor 2 are connected by rotating the top cover 5 and the mounting base 4. If the packing 9 becomes worn, the mounting plate 8 can be removed and replaced with a new packing 9, which can then be tightened with bolts.

[0025] When external gas and liquid invade the interior of the slip ring, they first pass through the packing 9, a common dynamic seal filler. Pressure is applied to the packing 9 by the mounting plate 8, sealing the gap between the top cover 5 and the housing 3. A first sealing ring 10 and a second sealing ring 11 further prevent the intrusion of external gas and liquid.

[0026] A flange 13 extends downward from the outer bottom surface of the top cover 5. An end bearing 14 is disposed between the flange 13 and the connecting block 6. The rotor 2 is rotatably connected to the mounting base 4 via the end bearing 14. The end bearing 14 ensures stable support for the rotor 2 while ensuring its rotation. The design of the flange 13 further protects the end bearing 14 from external interference.

[0027] The bottom surface of mounting hole 7 defines a conductive cavity 15, which is positioned downward. Conductive blocks 16 are alternately fixed to mounting base 4 and connecting block 6, and are located within these cavities. These cavities are filled with a liquid conductive medium. Because conductive blocks 16 of mounting base 4 and connecting block 6 slide relative to each other, the liquid conductive medium ensures a stable electrical connection between them. Mercury is used as the conductive medium, which exhibits excellent electrical conductivity.

[0028] An annular baffle 17 is fixedly connected to the bottom surface of the mounting base 4 and is positioned outside the conductive cavity 15. An annular groove 18 is formed on the bottom surface of the connecting block 6 for inserting the baffle 17. The baffle 17 and annular groove 18 confine the conductive medium in the conductive cavity 15 to the inside of the baffle 17, reducing the operating pressure on the first sealing ring 10 and the second sealing ring 11, thereby improving the stability and service life of the device.

[0029] The first sealing ring 10 is located on the bottom surface of the flange 13 , thereby preventing gas or liquid from entering from the gaps in the packing 9 from entering the end bearing 14 .

[0030] It is important to note that this airborne radar sealing slip ring has a channel running through the middle of the stator 1 and rotor 2 to facilitate wiring during subsequent installation. This design is quite common in the field of airborne radars and will not be described in detail. The mounting base 4 has an upward-facing annular protrusion 21 at the channel, and the connecting block 6 has a groove at the channel that mates with the annular protrusion 21. The annular protrusion 21 controls the mercury outside the annular protrusion 21. The third sealing ring 12 is located on the inner side of the conductive cavity 15 and is used to seal the mercury vapor at the annular protrusion 21.

[0031] In addition, the hollow radar sealing slip ring should be kept in a vertical position when in use to prevent the mercury from overflowing from the conductive cavity 15 and reduce the working pressure of the sealing ring. When in normal vertical use, the mercury is only located at the bottom of the conductive cavity 15.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hollow radar sealing slip ring, comprising a stator (1) and a rotor (2), characterized in that: The stator (1) comprises a housing (3) with an open top surface, and a mounting seat (4) is fixedly connected to the bottom of the housing (3); The rotor (2) includes a top cover (5) rotatably arranged on the top surface of the mounting seat (4); a connecting block (6) is fixedly connected downward to the bottom surface of the top cover (5); a mounting hole (7) for placing the connecting block (6) is provided in the middle of the mounting seat (4); and the bottom surface of the connecting block (6) is electrically connected to the bottom surface of the mounting hole (7); The top surface of the shell (3) is higher than the top surface of the top cover (5), and the top surface of the shell (3) is detachably connected to a mounting plate (8). A packing (9) is filled in the cavity surrounded by the mounting plate (8), the top cover (5), and the shell (3). The top surface, the inner side surface, and the inner bottom surface of the mounting seat (4) are respectively provided with a first sealing ring (10), a second sealing ring (11), and a third sealing ring (12).

2. The hollow radar sealing slip ring according to claim 1, characterized in that: A flange (13) extends downward from the outer side of the bottom surface of the top cover (5), an end bearing (14) is provided between the flange (13) and the connecting block (6), and the rotor (2) is rotatably connected to the top of the mounting seat (4) via the end bearing (14).

3. The hollow radar sealing slip ring according to claim 1, characterized in that: An annular conductive cavity (15) is provided downwardly on the bottom surface of the mounting hole (7), and conductive blocks (16) located in the conductive cavity are staggered and fixedly provided on the mounting seat (4) and the connecting block (6), and the conductive cavity (15) is filled with a liquid conductive medium.

4. The hollow radar sealing slip ring according to claim 3, characterized in that: An annular baffle (17) is fixedly connected to the bottom surface of the mounting seat (4), and the baffle (17) is sleeved outside the conductive cavity (15). An annular groove (18) for inserting the baffle (17) is provided on the bottom surface of the connecting block (6).

5. The hollow radar sealing slip ring according to claim 2, characterized in that: The first sealing ring (10) is located on the bottom surface of the flange (13).

6. The hollow radar sealing slip ring according to claim 4, characterized in that: The third sealing ring (12) is located on the inner side of the annular conductive cavity (15).

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