A power signal rolling ring radial nested rotary electrical transmission device

Abstract

A radially nested rotary electrical transmission device for power and signal rolling rings includes a housing, a power rolling electrical transmission assembly, a signal rolling electrical transmission assembly, an inner ring connector, an outer ring connector, and bearings. The power rolling electrical transmission assembly comprises a power inner conductive ring, a power outer conductive ring, a power flexible ring, an idler wheel, a power inner insulating layer, and a power outer insulating layer. The signal rolling electrical transmission assembly comprises a signal inner conductive ring, a signal outer conductive ring, a signal flexible ring, a signal inner insulating layer, and a signal outer insulating layer. The power rolling electrical transmission assembly and the signal rolling electrical transmission assembly are coaxially mounted. The outer conductive ring portions of the power rolling electrical transmission assembly and the signal rolling electrical transmission assembly are connected by the outer ring connector, and the inner conductive ring shaft portions of the power rolling electrical transmission assembly and the signal rolling electrical transmission assembly are connected by the inner ring connector, thereby achieving power and signal transmission from the stationary end to the rotating end.

Description

Technical fields:

[0001] This invention relates to the field of electro-rotation transmission, and in particular to a radially nested rotary electro-rotation transmission device for power signal rolling rings. Background technology:

[0002] Rotary electrical transmission devices enable the transmission of electrical energy and signals between two components that rotate relative to each other at n×360°. They typically consist of rotating parts, fixed parts, bearings, structural components, etc., and are mainly used in aerospace, wind power generation, medical equipment and other fields that require the transmission of electrical signals.

[0003] With the continuous development of my country's aerospace industry, the demand for high-power, long-life, and highly reliable equipment in spacecraft is constantly increasing, thus necessitating improvements in the power and operational lifespan of space electrical transmission systems. Under the premise of ensuring the safety and stability of electrical transmission, increasing transmission power, reducing wear rates, and extending operational lifespan are the development trends of rotating electrical transmission devices.

[0004] The solar panel drive mechanism not only needs to transmit high-voltage, high-current electrical power, but also multi-channel low-voltage electrical signals. However, spacecraft have strict constraints on the size and weight of internal equipment, so traditional electrical transmission components cannot simultaneously meet the requirements of long-life, high-reliability transmission of high-power and multi-channel electrical signals under small envelope conditions. Summary of the Invention:

[0005] The purpose of this invention is to provide a power signal rolling ring radial nested rotary electrical transmission device to meet the long-life and high-reliability transmission requirements of high-power and multi-channel electrical signals under small envelope conditions of solar panel drive mechanism with a small envelope structure.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A radially nested rotary electrical transmission device for power and signal rolling rings, comprising: a housing, a power rolling electrical transmission assembly, a signal rolling electrical transmission assembly, an inner ring connector, an outer ring connector, bearings, etc. The power rolling electrical transmission assembly is composed of main components such as an inner power conductive ring, an outer power conductive ring, a flexible power ring, an idler wheel, an inner power insulating layer, and an outer power insulating layer; the signal rolling electrical transmission assembly is composed of main components such as an inner signal conductive ring, an outer signal conductive ring, a flexible signal ring, an inner signal insulating layer, and an outer signal insulating layer. The power rolling electrical transmission assembly and the signal rolling electrical transmission assembly are coaxially mounted. The outer conductive ring portion of the power rolling electrical transmission assembly and the outer conductive ring portion of the signal rolling electrical transmission assembly are connected by the outer ring connector, and the inner conductive ring shaft of the power rolling electrical transmission assembly and the inner conductive ring shaft portion of the signal rolling electrical transmission assembly are connected by the inner ring connector, thereby realizing power and signal transmission from the stationary end to the rotating end.

[0007] Furthermore, the power rolling electric transmission component shaft has a set of face-to-face mounted angular contact ball bearings at both ends, and the signal rolling electric transmission component shaft has a set of deep groove ball bearings at both ends. The outer ring connector surface contacts the housing and the signal rolling ring outer cover respectively. The inner ring of the contact surface has a boss that abuts against the two bearing outer rings. The bearing inner ring contacts the raised end faces of the signal rolling ring shaft and the power rolling ring shaft. On the other side, the two bearing inner rings contact the raised end faces of the signal rolling ring bearing housing and the power rolling ring bearing housing, and the bearing outer ring contacts the power rolling ring retainer ring and the signal rolling ring retainer ring. Axial force is applied by screws to fix the bearings on both sides.

[0008] Furthermore, a loop seal is installed between the conductive layer in the power rolling electric transmission assembly and the bearings at both ends;

[0009] Furthermore, in the power rolling electric transmission assembly, the conductive inner ring and conductive outer ring of each loop are led out with wires through lugs, and connected to the external interface through the radially distributed wiring holes of the rolling ring shaft and end cap.

[0010] Furthermore, each layer of the power rolling electric transmission component has multiple flexible rings, and power transmission is achieved through an inner conductive ring - multiple flexible rings in parallel - outer conductive ring conductive loop.

[0011] Furthermore, in the signal rolling electrical transmission assembly, each layer of the conductive inner ring has a lead wire led out through a lug, and is connected to the external interface through the signal rolling ring shaft and the central hole of the connector;

[0012] Furthermore, each loop in the signal rolling electric transmission component has a single flexible ring, and current signal transmission is achieved through a conductive loop of inner conductive ring-flexible ring-outer conductive ring.

[0013] This invention fully leverages the characteristics of rolling rings—low wear, long lifespan, and high transmission power—by utilizing a multi-flexible-ring power rolling ring to transmit high-power electrical energy, and a single-flexible-ring signal rolling ring to transmit multi-channel signals. Both are coaxially mounted, achieving separation of the power ring and signal ring while minimizing the overall device size, thus effectively meeting the requirements of spacecraft for small-envelope, high-power electrical transmission devices. Attached image description:

[0014] Figure 1 This is an axial cross-sectional view of a power signal rolling ring radially nested rotary electrical transmission device according to the present invention.

[0015] Figure 2 This is a radial cross-sectional view of a power signal rolling ring radial nested rotary electrical transmission device according to the present invention. Detailed implementation method:

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0017] The embodiment shown in the figure is a radially nested rotary electrical transmission device for power signal rolling rings, wherein: 1-shell; 2-outer ring connector; 3-angular contact ball bearing; 4-power rolling ring shaft; 5-signal rolling ring shaft; 6-deep groove ball bearing; 7-signal rolling ring outer cover; 8-inner positioning bar; 9-outer positioning bar; 10-power outer insulation layer; 11-power outer conductive ring; 12-power flexible ring; 13-idler wheel; 14-power inner insulation layer; 15-power inner conductive ring; 16-inner sealing ring; 17-outer sealing ring; 18-outer bushing; 19-insulating bushing; 20-outer retaining ring; 21-inner ring connector; 22-inner bushing; 23-inner bearing seat; 24-inner retaining ring; 25-outer bearing seat; 26-signal outer conductive ring; 27-signal outer insulation layer; 28-signal inner conductive ring; 29-signal inner insulation layer; 30-positioning bar; 31-signal flexible ring.

[0018] This invention discloses a radially nested rotary electrical transmission device for power signals, comprising a housing 1, a power rolling electrical transmission assembly, a signal rolling electrical transmission assembly, an inner ring connector 21, an outer ring connector 2, bearings, etc. The power rolling electrical transmission assembly is composed of main components such as an inner power conductive ring 15, an outer power conductive ring 11, a flexible power ring 12, an idler wheel 13, an inner power insulating layer 14, and an outer power insulating layer 10. The signal rolling electrical transmission assembly is composed of main components such as an inner signal conductive ring 26, an outer signal conductive ring 28, a flexible signal ring 31, an inner signal insulating layer 29, and an outer signal insulating layer 27.

[0019] In the power rolling electrical transmission assembly, each loop layer has multiple flexible power rings 12 and idler wheels 13, which are radially alternating and uniformly arranged between the inner power conductive ring 15 and the outer power conductive ring 11. The outer diameter of the flexible power ring 12 is slightly larger than the difference between the outer raceway radius of the inner power conductive ring 15 and the inner raceway radius of the outer power conductive ring 11, and it is fixed between the inner and outer raceways by the rebound force of radial deformation. The idler wheels 13 separate the multiple flexible power rings 12 to prevent interference during rotation. Each loop layer is separated by an inner power insulating layer 14 and an outer power insulating layer 10.

[0020] Four inner positioning strips 8 are evenly distributed radially on the outer side of the power roller shaft 4. The inner positioning strips 8 cooperate with the inner power conductive ring 15 and the inner power insulating layer 14. Four outer positioning strips 9 are evenly distributed radially on the inner side of the outer casing 1. The outer positioning strips 9 cooperate with the outer power conductive ring 11 and the outer power insulating layer 10.

[0021] In the power rolling electric transmission assembly, the inner sealing ring 16 and the outer sealing ring 17 form a loop seal by alternating, non-interfering bosses, arranged at both ends of the conductive loop to prevent wear debris from moving into the bearing clearance during the movement of the conductive loop. The inner sealing rings 16 at both ends respectively mate with the power rolling ring shaft 4 and the outer bearing seat 25, and the outer bearing seat 25 is fixed to the power rolling ring shaft 4 by screws; the outer sealing rings 17 at both ends respectively mate with the outer housing 1 and the outer bushing 18, and the outer bushing 18 is fixed to the outer housing 1 by screws; the clamping force generated by the screws axially fixes the outer sealing ring 17, the inner sealing ring 16, and the conductive loop between the power rolling ring shaft 4 and the outer housing 1, preventing axial movement of each layer of conductive loop.

[0022] An insulating bushing 19 is mounted on the outer side of the signal roller shaft 5. The inner insulating layer 29 and the inner conductive ring 28 are alternately axially fitted onto the insulating bushing 19. The inner bearing seat 23 is installed at the end of the signal roller shaft 5 by screws, and the inner insulating layer 29 and the inner conductive ring 28 are axially fixed to the signal roller shaft 5 by clamping force to prevent axial movement during operation.

[0023] The inner ring connector 21 is connected to the inner bearing seat 23 and the outer bearing seat 25 by screws, so that the inner conductive ring layer shaft of the power rolling electric transmission component rotates at the same speed as the inner conductive ring layer shaft of the signal rolling electric transmission component; the outer ring connector 2 is connected to the power rolling ring shaft 4 and the signal rolling ring shaft 5 by screws, so that the outer conductive layer of the power rolling electric transmission component rotates at the same speed as the outer conductive layer of the signal rolling electric transmission component, thereby realizing power transmission and signal transmission from the rotating end to the fixed end of the electric transmission device.

[0024] The power rolling current transmission component and signal rolling current transmission component of the aforementioned power signal rolling ring radial nested current transmission device are modularly designed. They can be assembled separately and then combined to complete the final assembly, making installation convenient and highly flexible. The power rolling current transmission component, due to its rolling contact, features low wear and long lifespan, and each layer has multiple flexible rings connected in parallel, making it suitable for transmitting high-power current. The signal rolling current transmission component also uses a rolling contact form, ensuring stable contact of individual flexible rings through the "U"-shaped ring channels of the inner and outer conductive rings, guaranteeing contact stability while maintaining low wear characteristics. Both are coaxially and radially nested together, fully utilizing their advantages, saving space and reducing costs.

[0025] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the present invention.

Claims

1. A radially nested rotary electrical transmission device for power signal rolling rings, characterized in that: Includes housing, power rolling electric transmission assembly, signal rolling electric transmission assembly, inner ring connector, outer ring connector, and bearing; The power rolling electrical transmission component consists of an inner power conductive ring, an outer power conductive ring, a flexible power ring, an idler wheel, an inner power insulating layer, and an outer power insulating layer; the signal rolling electrical transmission component consists of an inner signal conductive ring, an outer signal conductive ring, a flexible signal ring, an inner signal insulating layer, and an outer signal insulating layer. The power rolling electrical transmission component and the signal rolling electrical transmission component are coaxially mounted, and the outer conductive ring portion of the power rolling electrical transmission component and the outer conductive ring portion of the signal rolling electrical transmission component are connected by an outer ring connector. The inner conductive ring shaft of the power rolling electrical transmission component and the inner conductive ring shaft portion of the signal rolling electrical transmission component are connected by an inner ring connector to achieve power and signal transmission from the stationary end to the rotating end. A pair of angular contact ball bearings are installed between the shaft and the housing of the power rolling electric transmission component, with the bearings mounted face to face. A pair of deep groove ball bearings are installed between the shaft of the signal rolling electric transmission component and the housing. Each layer of the power rolling electric transmission component consists of an inner power conductive ring, a flexible power ring, an idler wheel, and an outer power conductive ring. The flexible ring and the idler wheel are arranged alternately between the inner and outer conductive rings. Each layer of the conductive ring includes 10 flexible rings and 10 idler wheels. The power rolling electric transmission component has four lug structures evenly distributed on the inner diameter edge of the inner conductive ring and the outer diameter edge of the outer conductive ring. The signal rolling electrical transmission component consists of an inner conductive ring, an outer conductive ring, and a single flexible ring in each layer of conductive loop; The signal rolling electrical transmission component has a lug structure on the inner diameter edge of the inner conductive ring and the outer diameter edge of the outer conductive ring. The outer ring connector is in close contact with the outer shell and the signal rolling ring cover, and there are two bosses in the contact surface that abut against the outer rings of the two bearings. The inner ring connector is in close contact with the end face of the power rolling ring shaft and the signal rolling ring bearing seat, and there is a gap between the plane outside the contact surface and the inner rings of the two bearings.

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