Rolling ring rotation conductive device

Abstract

The invention provides a rolling ring rotation conductive device used for spacecraft solar panel power and signal transmission. The rolling ring rotation conductive device comprises a conductive rotation shaft, a shell and a rolling ring assembly. The rolling ring assembly comprises an outer insulating disc, an inner insulating disc, an outer conducting ring, an inner conducting ring, a rolling ring, an isolating ring, a stator wire and a rotor wire. In the rolling ring assembly, an outer insulation disc and an outer conducting ring are fixed, an inner insulation disc and an inner conducting ring rotate synchronously, the outer conducting ring and the inner conducting ring are communicated through a rolling ring, and when the inner conducting ring rotates, the rolling ring rolls between the outer conducting ring and the inner conducting ring. The rolling ring assembly inner insulation disc is nested on the rotating shaft, and the rolling ring assembly outer insulation disc is nested in the shell. The rotating shaft drives the flange plate, the inner insulating plate in the rolling ring assembly and the inner conducting ring to rotate relative to the shell. The power or signal transmission path of the solar panel is composed of a rotor wire, an inner conducting ring, a rolling ring, an outer conducting ring and a stator wire.

Description

Technical Field

[0001] This invention belongs to the field of signal and power transmission technology for space solar panels, specifically relating to a rolling ring rotating conductive device. Background Technology

[0002] Spacecraft typically use solar panels to generate power while in orbit. To achieve solar orientation, the solar panels usually need to rotate 360° along their main axis, requiring conductive slip rings to transmit power and signals. Commonly used conductive slip rings have 360° rotation capability and use brushes and ring tracks for power and signal transmission.

[0003] In commonly used conductive slip rings, the brush and the ring track have a sliding contact and require a certain contact pressure. However, long-term rotation of the conductive slip ring will lead to frictional wear between the brush and the ring track, resulting in grinding. Grinding can cause short circuits in the conductive slip ring. Simultaneously, as the number of rotations of the brush and the ring track increases, frictional wear accumulates, the contact pressure between the brush and the ring track decreases, and the contact surface becomes uneven due to wear. This reduces the contact stability between the brush and the ring track, causing the signal transmission of the conductive slip ring to gradually become unstable, thus affecting the transmission of intermediate and high-frequency signals. Traditional conductive slip rings, after long-term operation, cannot effectively prevent grinding and cannot maintain the contact pressure between the brush and the ring track within a reasonable range. Therefore, the service life of traditional conductive slip rings is limited by the contact condition between the brush and the ring track.

[0004] Therefore, traditional conductive slip rings inherently experience sliding wear between the brush and the ring track, making the slip ring's lifespan and reliability extremely sensitive to the contact condition between the brush and the track. Currently, improving the lifespan and reliability of conductive slip rings remains a significant challenge in spacecraft development. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of this invention is to provide a rolling ring rotating conductive device.

[0006] A rolling ring rotating conductive device according to the present invention includes: a housing 1, a rotating shaft 3, an angular contact bearing 4, a deep groove ball bearing 8, and a rolling ring assembly 20;

[0007] Housing 1 is fixed and does not rotate;

[0008] The rotating shaft 3 is connected to the housing 1 at both ends by a deep groove ball bearing 8 and an angular contact bearing 4, respectively;

[0009] The rolling ring assembly 20 is installed between the rotating shaft 3 and the housing 1.

[0010] Preferably, the rolling ring assembly 20 includes: an outer insulating disk 21, an inner insulating disk 22, an outer conductive ring 23, an inner conductive ring 24, and a rolling ring 25;

[0011] The outer insulating disk 21 is mounted on the housing 1, and the outer conductive ring 23 is nested and coaxially mounted on the outer insulating disk 21;

[0012] The inner insulating disk 22 is coaxially mounted on the inner ring of the outer insulating disk 21, and the inner conductive ring 24 is nested and coaxially mounted on the inner insulating disk 22. The inner insulating disk 22 can drive the inner conductive ring 24 to rotate synchronously.

[0013] The inner conductive ring 24 and the outer conductive ring 23 are coaxially mounted, and the rolling ring 25 is installed between the outer conductive ring 23 and the inner conductive ring 24.

[0014] 3. The rolling ring rotating conductive device according to claim 2, characterized in that, in the rolling ring assembly 20, the outer insulating disk 21 and the outer conductive ring 23 are fixed on the housing 1 and remain stationary, the outer conductive ring 23 and the inner conductive ring 24 are electrically connected through the rolling ring 25, and when the inner conductive ring 24 rotates, the rolling ring 25 rolls between the outer conductive ring 23 and the inner conductive ring 24.

[0015] The inner insulating disk 22 is nested on the rotating shaft 3, and the outer insulating disk 21 is nested inside the housing 1;

[0016] The rotating shaft 3 drives the inner insulating disk 22 and the inner conductive ring 24 to rotate relative to the housing 1.

[0017] Preferably, the rolling ring assembly 20 further includes: stator wire 27 and rotor wire 28;

[0018] One end of the stator conductor 27 is connected to the outer conductive ring 23, and the other end of the stator conductor 27 is led out.

[0019] One end of the rotor wire 28 is connected to the inner conductive ring 24, and the other end of the rotor wire 28 is led out.

[0020] Preferably, the rolling ring assembly 20 further includes: an isolation ring 26;

[0021] An isolation ring 26 is installed between the rolling rings 25; multiple rolling rings 25 are evenly distributed between the inner conductive ring 24 and the outer conductive ring 23, and multiple isolation rings 26 are evenly distributed between the inner conductive ring 24 and the outer conductive ring 23.

[0022] The outer diameter of the rolling ring 25 is larger than the gap between the inner conductive ring 24 and the outer conductive ring 23;

[0023] The rolling rings 25 in the multiple rolling ring assemblies 20 are isolated from each other by an outer insulating disk 21 and an inner insulating disk 22;

[0024] Multiple rolling ring assemblies 20 are stacked and assembled, and the multiple rolling ring assemblies 20 rotate synchronously under the drive of the rotating shaft 3.

[0025] Preferably, the outer insulating disk 21 is provided with a channel, and the outer conductive ring 23 is provided with an ear. The ear of the outer conductive ring 23 is embedded in the channel of the outer insulating disk 21, so as to realize that the outer insulating disk 21 and the outer conductive ring 23 are coaxially fixed and rotate synchronously.

[0026] The outer insulating disk 21 is provided with lugs, and the housing 1 is provided with a groove. The lugs of the outer insulating disk 21 are embedded into the groove of the housing 1 to achieve coaxial fixation between the outer insulating disk 21 and the housing 1.

[0027] The inner insulating disk 22 is provided with a channel, and the inner conductive ring 24 is provided with a lug. The lug of the inner conductive ring 24 is embedded into the channel of the inner insulating disk 22 to achieve coaxial fixation between the inner insulating disk 22 and the inner conductive ring 24.

[0028] The inner insulating disk 22 is provided with lugs, and the rotating shaft 3 is provided with a groove. The lugs of the inner insulating disk 22 are embedded in the groove of the rotating shaft 3, so that the inner insulating disk 22 and the rotating shaft 3 are coaxially fixed.

[0029] Preferably, the angular contact bearing 4 includes: an angular contact bearing inner sleeve 5;

[0030] The inner sleeve 5 of the angular contact bearing is fitted on the rotating shaft 3, and the inner sleeve 5 of the angular contact bearing and the flange 11 rotate synchronously under the drive of the rotating shaft 3;

[0031] The outer ring of the angular contact bearing 4 is pressed onto the housing 1 by the angular contact bearing cap 7.

[0032] Preferably, the inner ring of the deep groove ball bearing 8 is fitted onto the rotating shaft 3, and the outer ring of the deep groove ball bearing 8 is embedded in the circular groove of the housing 1 and pressed onto the housing 1 by the base 2; the inner ring of the deep groove ball bearing 8 is pressed onto the rotating shaft 3 by the deep groove ball bearing cover 9; the rotating shaft 3, the deep groove ball bearing cover 9, the inner sleeve of the angular contact bearing 5 and the flange 11 can rotate synchronously.

[0033] Preferably, the angular contact bearings 4 are used in pairs, with the inner ring of the angular contact bearing 4 fitted onto the inner sleeve 5 of the angular contact bearing, the outer ring of the angular contact bearing 4 embedded into the outer sleeve 6 of the angular contact bearing, and the outer sleeve 6 of the angular contact bearing embedded into the circular hole of the housing 1. The housing 1, the base 2, the outer sleeve 6 of the angular contact bearing, and the angular contact bearing cover 7 are fixed and do not rotate.

[0034] Preferably, the inner ring of the angular contact bearing 4 is pressed against the inner sleeve of the angular contact bearing 5 by the flange 11.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The rolling ring rotating conductive device for signal and power transmission provided by the present invention has the technical characteristics of long working life, low transmission interference, and stable signal transmission.

[0037] 2. This invention utilizes a rolling ring to achieve communication between the inner conductive ring and the outer conductive ring. When the inner conductive ring rotates relative to the outer conductive ring, the rolling ring rolls between the inner and outer conductive rings. There is no relative sliding between the rolling ring and the inner and outer conductive rings, thereby avoiding grinding and thus avoiding the risk of short circuits that may be caused by grinding, and improving the life and reliability of the conductive device.

[0038] 3. The present invention has low signal transmission interference and stable signal transmission. It uses a rolling ring to realize the path, and there is no sliding friction between the rolling ring and the inner and outer conductive rings, which avoids wear on the contact surface and ensures the stability of the contact state, thereby effectively ensuring the stability of signal transmission.

[0039] 4. In this invention, bearings are provided at both the front and rear ends of the rotating shaft to ensure the overall bending moment resistance of the invention.

[0040] 5. In this invention, each conductive group is physically isolated from the others by an outer insulating disk and an inner insulating disk, preventing the spread of faults caused by foreign objects and improving reliability.

[0041] 6. In this invention, both the inner and outer conductive rings are nested in the outer and inner insulating disks by setting lugs. At the same time, the outer and inner insulating disks are respectively installed on the outer shell and the rotating shaft by the lugs, which effectively prevents the inner and outer conductive rings from rotating relative to the rotating shaft and the outer shell. It also facilitates installation and disassembly and improves reliability.

[0042] 7. In this invention, both the inner and outer conductive rings have lugs for welding wires, and both the outer and inner insulating disks are provided with arc-shaped holes for wire routing.

[0043] 8. In each rolling ring assembly, this invention employs four independent isolation rings to achieve mutual isolation between the four independent rolling rings. The four isolation rings are independent of each other and have no stress relationship; the isolation rings only serve an isolation function. Because the isolation rings are independent components, even if one rolling ring experiences fatigue fracture under fault conditions, it will not affect the stress state of the isolation ring, and the isolation ring will not jam, thus preventing the fault from propagating, resulting in high reliability. Attached Figure Description

[0044] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0045] Figure 1 This is a schematic diagram of the overall appearance of the invention;

[0046] Figure 2 This is a schematic cross-sectional view of the entire invention;

[0047] Figure 3 This is a schematic diagram of the rolling ring assembly of the present invention.

[0048] Figure 4 This is an exploded view of the rolling ring assembly of the present invention.

[0049] The diagram shows:

[0050] Detailed Implementation

[0051] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0052] This invention provides a rolling ring rotating conductive device for power and signal transmission of spacecraft solar panels, comprising a rotating shaft 3, a housing 1, a base 2, a deep groove ball bearing 8, an angular contact bearing 4, a flange 11, and multiple rolling ring assemblies 20. Each rolling ring assembly 20 includes an outer insulating disk 21, an inner insulating disk 22, an outer conductive ring 23, an inner conductive ring 24, a rolling ring 25, an isolation ring 26, stator wires 27, and rotor wires 28. In the rolling ring assembly 20, the outer insulating disk 21 and the outer conductive ring 23 are fixed stationary on the housing 1, while the inner insulating disk 22 and the inner conductive ring 24 rotate synchronously. The outer conductive ring 23 and the inner conductive ring 24 are electrically connected through the rolling ring 25. When the inner conductive ring 24 rotates, the rolling ring 25 rolls between the outer conductive ring 23 and the inner conductive ring 24. The inner insulating disk 22 of the rolling ring assembly 20 is nested on the rotating shaft 3, and the outer insulating disk 21 of the rolling ring assembly 20 is nested inside the housing 1. The rotating shaft 3 is fixed to the housing 1 at both ends by deep groove ball bearings 8 and angular contact bearings 4, respectively. The rotating shaft 3 drives the flange 11, the inner insulating disk 22 and the inner conductive ring 24 in the rolling ring assembly 20 to rotate relative to the housing 1. The power or signal transmission path of the solar panel is rotor wire, inner conductive ring, rolling ring, outer conductive ring and stator wire.

[0053] See Figure 2 As shown, the present invention provides a rolling ring rotating conductive device, including a housing 1, a base 2, a rotating shaft 3, an angular contact bearing 4, an inner sleeve of the angular contact bearing 5, an outer sleeve of the angular contact bearing 6, an angular contact bearing cover 7, a deep groove ball bearing 8, a deep groove ball bearing cover 9, a flange 11, and multiple rolling ring assemblies 20. The housing 1 and the base 2 are connected by screws, and the housing 1 and the base 2 are fixed and do not rotate.

[0054] The rotating shaft 3, the angular contact bearing inner sleeve 5, and the flange 11 are connected in series by screws. The angular contact bearing inner sleeve 5 is fitted onto the rotating shaft 3, and the angular contact bearing inner sleeve 5 and the flange 11 rotate synchronously under the drive of the rotating shaft 3. In the working state, the rotating shaft can achieve continuous ±360° rotation.

[0055] The rotating shaft 3 is connected to the housing 1 at both ends via deep groove ball bearings 8 and angular contact bearings 4, respectively. The inner ring of the deep groove ball bearing 8 is fitted onto the rotating shaft 3, and the outer ring is embedded in the circular hole of the base 2. The outer ring of the deep groove ball bearing 8 is embedded in the circular groove of the housing 1 and pressed against the housing 1 by the base 2. The inner ring of the deep groove ball bearing 8 is fitted onto the rotating shaft 3, and the outer ring is embedded inside the housing 1. The inner ring of the deep groove ball bearing 8 is pressed against the rotating shaft 3 by a deep groove ball bearing cap 9.

[0056] The angular contact bearings 4 are used in pairs. The inner ring of the angular contact bearing 4 is fitted onto the inner sleeve 5 of the angular contact bearing, and the outer ring is embedded in the outer sleeve 6 of the angular contact bearing. The outer sleeve 6 of the angular contact bearing is embedded in the circular hole of the housing 1. The outer ring of the angular contact bearing 4 is pressed against the housing 1 by the angular contact bearing cover 7, and the inner ring of the angular contact bearing 4 is pressed against the inner sleeve 5 of the angular contact bearing by the flange 11. In the assembled state, the housing 1, the base 2, the outer sleeve 6 of the angular contact bearing, and the angular contact bearing cover 7 are fixed and do not rotate, while the rotating shaft 3, the deep groove ball bearing cover 9, the inner sleeve 5 of the angular contact bearing, and the flange 11 rotate synchronously.

[0057] Multiple rolling ring assemblies 20 have their inner rings fitted onto the rotating shaft 3, and their outer rings nested inside the housing 1. One end of the stator wire 27 is connected to the rolling ring assembly, and the other end is led to the outside of the invention through an arc-shaped hole on the base 2. One end of the rotor wire 28 is connected to the rolling ring assembly, and the other end is led to the outside of the invention through an arc-shaped hole on the flange 11.

[0058] See Figure 3 and Figure 4As shown, the rolling ring assembly 20 is a rotating conductive assembly, including an outer insulating disk 21, an inner insulating disk 22, an outer conductive ring 23, an inner conductive ring 24, a rolling ring 25, an isolation ring 26, stator wires 27, and rotor wires 28. The rolling ring assembly 20 is used to transmit power and signals from the solar array. The inner insulating disk 22 is coaxially mounted on the inner ring of the outer insulating disk 21, and the inner insulating disk 22 in the rolling ring assembly 20 is mounted on the rotating shaft 3. The outer insulating disk 21 is mounted on the housing 1. The outer conductive ring 23 is nested and coaxially mounted on the outer insulating disk 21, and the inner conductive ring 24 is nested and coaxially mounted on the inner insulating disk 22. When the rotating shaft 3 rotates, the rotating shaft 3 drives the inner insulating disk 22 in the rolling ring assembly 20 to rotate, and the inner insulating disk 22 drives the inner conductive ring 24 to rotate synchronously. The inner conductive ring 24 and the outer conductive ring 23 are coaxially mounted, and the roller ring 25 is mounted between the outer conductive ring 23 and the inner conductive ring 24. The inner conductive ring 24 and the outer conductive ring 23 are electrically connected through the roller ring 2.

[0059] Three rotor wires 28 are connected to the inner conductive ring 24 of the rolling ring assembly 20 for backup; three stator wires 27 are connected to the outer conductive ring 23 of the rolling ring assembly 20 for backup.

[0060] The outer conductive rings 23 in different rolling ring assemblies 20 are isolated from each other by the outer insulating disk 21, the inner conductive rings 24 in different rolling ring assemblies 20 are isolated from each other by the inner insulating disk 22, and the rolling rings 25 in different rolling ring assemblies 20 are isolated from each other by the outer insulating disk 21 and the inner insulating disk 22.

[0061] Specifically, four rolling rings 25 can be evenly distributed between the inner conductive ring 24 and the outer conductive ring 23. When the inner conductive ring 24 and the outer conductive ring 23 rotate relative to each other, the rolling rings 25 roll between the outer conductive ring 23 and the inner conductive ring 24. A path is formed between the outer conductive ring 23, the rolling rings 25, and the inner conductive ring 24 to realize the transmission of power or signals. Preferably, in the rolling ring assembly 20, the outer diameter of the rolling ring 25 is larger than the gap between the inner conductive ring 24 and the outer conductive ring 23. When the rolling ring 25 is installed between the inner conductive ring 24 and the outer conductive ring 23, the rolling ring 25 will undergo a certain elastic deformation under the constraint of the inner conductive ring 24 and the outer conductive ring 23, so that there is a certain contact pressure between the rolling ring 25 and the inner conductive ring 24 and the outer conductive ring 23.

[0062] Preferably, in the rolling ring assembly 20, the outer insulating disk 21, the inner insulating disk 22, and the isolation ring 26 are made of polytetrafluoroethylene;

[0063] Preferably, the rotating shaft 3 is made of titanium alloy.

[0064] When the inner insulating disk 22 and the inner conductive ring 24 rotate relative to the outer insulating disk 21 and the outer conductive ring 23, the four rolling rings 25 roll relative to the inner conductive ring 24 and the outer conductive ring 23. Isolating rings 26 are installed between the rolling rings 25. The four isolating rings 26 are evenly distributed between the inner conductive ring 24 and the outer conductive ring 23, and their function is to isolate the four rolling rings 25 and prevent them from contacting each other.

[0065] In the rolling ring assembly 20, the outer insulating disk 21 is provided with a channel, and the outer conductive ring 23 is provided with an ear. The ear of the outer conductive ring 23 is embedded in the channel of the outer insulating disk 21, so as to achieve coaxial fixation and synchronous rotation of the outer insulating disk 21 and the outer conductive ring 23.

[0066] Preferably, the end of the stator conductor 27 is welded to the lug of the outer conductive ring 23 and runs through the arc-shaped through hole in the outer insulating disk 21 to the base to achieve shell insulation;

[0067] Preferably, the end of the rotor wire 28 is welded to the lug of the inner conductive ring 24 and runs through the arc-shaped through hole in the inner insulating disk 22 to the flange 11 to achieve shaft insulation.

[0068] Both the outer conductive ring 23 and the inner conductive ring 24 have three lugs, each with a wire welded to it. Each outer conductive ring 23 and inner conductive ring 24 has three wires welded to it. The outer insulating disk 21 contains three arc-shaped through holes, and the inner insulating disk 22 contains three arc-shaped through holes. The three stator wires 27 on the outer conductive ring 23 are routed to the base 2 through the three arc-shaped through holes on the outer insulating disk, and the three rotor wires 28 on the inner conductive ring 24 are routed to the flange 11 through the three arc-shaped through holes on the inner insulating disk.

[0069] See Figure 2 As shown, the multiple rolling ring assemblies 20 are stacked and assembled, and the multiple inner insulating disks 22 and inner conductive rings 24 rotate synchronously under the drive of the rotating shaft.

[0070] Preferably, in the rolling ring assembly 20, the rolling ring 25 is a thin-walled annular structure; in a preferred embodiment, the outer conductive ring 23, the inner conductive ring 24, and the rolling ring 25 are made of beryllium bronze. The rolling ring 25 has an outer diameter of 19.5 mm, an inner diameter of 18.5 mm, and a height of 1.5 mm or 2 mm. The outer conductive ring 23 has an outer diameter of 90 mm, an inner diameter of 88 mm, and a height of 2 mm. The inner conductive ring 24 has an outer diameter of 50 mm and an inner diameter of 48 mm.

[0071] The present invention allows for adjustment of the number of rolling ring assemblies 20 according to the power or number of signal paths of the solar panels to be transmitted.

[0072] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0073] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A rotating conductive device for a rolling ring, characterized in that, include: Housing (1), rotating shaft (3), angular contact bearing (4), deep groove ball bearing (8), and rolling ring assembly (20); The housing (1) is fixed and does not rotate; The rotating shaft (3) is connected to the housing (1) at both ends by deep groove ball bearings (8) and angular contact bearings (4); The rolling ring assembly (20) is installed between the rotating shaft (3) and the housing (1).

2. The rolling ring rotating conductive device according to claim 1, characterized in that, The rolling ring assembly (20) includes: an outer insulating disk (21), an inner insulating disk (22), an outer conductive ring (23), an inner conductive ring (24), and a rolling ring (25); An outer insulating disk (21) is mounted on a housing (1), and an outer conductive ring (23) is nested and coaxially mounted on the outer insulating disk (21); The inner insulating disk (22) is coaxially mounted on the inner ring of the outer insulating disk (21), and the inner conductive ring (24) is nested and coaxially mounted on the inner insulating disk (22). The inner insulating disk (22) can drive the inner conductive ring (24) to rotate synchronously. The inner conductive ring (24) and the outer conductive ring (23) are coaxially mounted, and the rolling ring (25) is installed between the outer conductive ring (23) and the inner conductive ring (24).

3. The rolling ring rotating conductive device according to claim 2, characterized in that, In the rolling ring assembly (20), the outer insulating disk (21) and the outer conductive ring (23) are fixed on the housing (1) and remain stationary. The outer conductive ring (23) and the inner conductive ring (24) are electrically connected through the rolling ring (25). When the inner conductive ring (24) rotates, the rolling ring (25) rolls between the outer conductive ring (23) and the inner conductive ring (24). The inner insulating disk (22) is nested on the rotating shaft (3), and the outer insulating disk (21) is nested inside the housing (1); The rotating shaft (3) drives the inner insulating disk (22) and the inner conductive ring (24) to rotate relative to the shell (1).

4. The rolling ring rotating conductive device according to claim 2, characterized in that, The rolling ring assembly (20) also includes: stator wires (27) and rotor wires (28); One end of the stator conductor (27) is connected to the outer conductive ring (23), and the other end of the stator conductor (27) is led out. One end of the rotor wire (28) is connected to the inner conductive ring (24), and the other end of the rotor wire (28) is led out.

5. The rolling ring rotating conductive device according to claim 2, characterized in that, The rolling ring assembly (20) also includes: an isolation ring (26); An isolation ring (26) is installed between the rolling rings (25); multiple rolling rings (25) are evenly distributed between the inner conductive ring (24) and the outer conductive ring (23), and multiple isolation rings (26) are evenly distributed between the inner conductive ring (24) and the outer conductive ring (23); The outer diameter of the rolling ring (25) is larger than the gap between the inner conductive ring (24) and the outer conductive ring (23); The rolling rings (25) in the multiple rolling ring assemblies (20) are isolated from each other by an outer insulating disk (21) and an inner insulating disk (22); Multiple rolling ring assemblies (20) are stacked and assembled, and the multiple rolling ring assemblies (20) rotate synchronously under the drive of the rotating shaft (3).

6. The rolling ring rotating conductive device according to claim 2, characterized in that, The outer insulating disk (21) is provided with a channel, and the outer conductive ring (23) is provided with an ear. The ear of the outer conductive ring (23) is embedded into the channel of the outer insulating disk (21) to achieve coaxial fixation and synchronous rotation of the outer insulating disk (21) and the outer conductive ring (23); The outer insulating disk (21) is provided with lugs, and the housing (1) is provided with a groove. The lugs of the outer insulating disk (21) are embedded in the groove of the housing (1) to achieve coaxial fixation between the outer insulating disk (21) and the housing (1). The inner insulating disk (22) is provided with a channel, and the inner conductive ring (24) is provided with an ear. The ear of the inner conductive ring (24) is embedded into the channel of the inner insulating disk (22) to achieve coaxial fixation between the inner insulating disk (22) and the inner conductive ring (24). The inner insulating disk (22) is provided with lugs, and the rotating shaft (3) is provided with a groove. The lugs of the inner insulating disk (22) are embedded in the groove of the rotating shaft (3) to achieve coaxial fixation of the inner insulating disk (22) and the rotating shaft (3).

7. The rolling ring rotating conductive device according to claim 1, characterized in that, The angular contact bearing (4) includes: an angular contact bearing inner sleeve (5); The inner sleeve (5) of the angular contact bearing is sleeved on the rotating shaft (3), and the inner sleeve (5) of the angular contact bearing and the flange 11 rotate synchronously under the drive of the rotating shaft (3); The outer ring of the angular contact bearing (4) is pressed onto the housing (1) by the angular contact bearing cap (7).

8. The rolling ring rotating conductive device according to claim 1, characterized in that, The inner ring of the deep groove ball bearing (8) is fitted onto the rotating shaft (3), and the outer ring of the deep groove ball bearing (8) is embedded in the circular groove of the housing (1) and pressed onto the housing (1) by the base (2); the inner ring of the deep groove ball bearing (8) is pressed onto the rotating shaft (3) by the deep groove ball bearing cover (9); the rotating shaft (3), the deep groove ball bearing cover (9), the inner ring of the angular contact bearing (5) and the flange (11) can rotate synchronously.

9. The rolling ring rotating conductive device according to claim 7, characterized in that, The angular contact bearings (4) are used in pairs. The inner ring of the angular contact bearing (4) is fitted on the inner sleeve of the angular contact bearing (5), and the outer ring of the angular contact bearing (4) is embedded in the outer sleeve of the angular contact bearing (6). The outer sleeve of the angular contact bearing (6) is embedded in the circular hole of the housing (1). The housing (1), the base (2), the outer sleeve of the angular contact bearing (6) and the angular contact bearing cover (7) are fixed and do not rotate.

10. The rolling ring rotating conductive device according to claim 9, characterized in that, The inner ring of the angular contact bearing (4) is pressed onto the inner sleeve (5) of the angular contact bearing by the flange (11).

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