CN-122000739-A - Maintainable earthing device for on-orbit auxiliary astronaut manual earthing

CN122000739ACN 122000739 ACN122000739 ACN 122000739ACN-122000739-A

Abstract

The application discloses a maintainable grounding device for assisting an on-orbit astronaut to manually ground, and belongs to the technical field of aerospace equipment. The device mainly comprises a plug assembly and a fixing assembly, wherein the plug assembly comprises a plug device, a non-falling fastening device, a bead ejection mechanism and a connecting mechanism, and the fixing assembly comprises a fixing plate and a mounting column. The plug device is in butt joint connection with the mounting column, quick plug and reliable fixation can be realized through manual tool or electric tool operation by astronauts, the plug component and the fixing component can be locked without falling off the fastening device, not only loosening and falling off are prevented, but also on-track maintenance is facilitated, the top bead mechanism is provided with elastic force through a spring to enable the top bead to be embedded into a ball socket groove of the fixing component, a self-locking structure is formed, structural stability under weightlessness or vibration environment is ensured, reliable electrical grounding of the connection mechanism and replaceable equipment is realized through an O-shaped terminal and a grounding wire, and therefore safety and electrical integrity of the equipment during on-track operation are ensured.

Inventors

WEI WEI
GUO TAO
TANG LAIYING
YANG JIAXIN
WU YOURONG
ZHAO MENGMENG
WANG CHENG
SU DONG

Assignees

北京卫星环境工程研究所

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (10)

1. A serviceable grounding device for assisting an on-orbit astronaut in manually grounding, comprising: The plug assembly comprises a plug device, a plug assembly and a plug assembly, wherein the plug device is positioned at the bottom of the plug assembly and can be in butt joint connection with a mounting column of the fixed assembly; the device comprises a plug assembly, a non-falling fastening device, a bead ejection mechanism, a connecting mechanism and a replaceable device, wherein the non-falling fastening device is positioned at the upper end of the plug assembly, so that an astronaut can lock the plug assembly with the fixed assembly through a manual tool or an electric tool; The fixing assembly is arranged on the surface of a preset installation position of the cabin board where the replaceable equipment is located and comprises a fixing plate and an installation column arranged on the surface of the fixing plate; The plug assembly and the fixed assembly are oppositely arranged, and plug connection can be achieved.
2. The maintainable grounding device for assisting an on-orbit astronaut in manual grounding according to claim 1, wherein the plug device is arranged at the bottom of the plug assembly, the plug device is a semi-closed butt joint channel, a guide groove is arranged on the outer surface of the butt joint channel and used for guiding the alignment of the butt joint parts when the plug assembly is inserted into the fixing assembly, and the plug assembly is ensured to be successfully plugged.
3. The device of claim 1, wherein the non-slip fastening means comprises an adjustable threaded rod and a threaded rod sleeve, the threaded rod sleeve being mounted on the threaded rod, the threaded rod being movable within the threaded rod sleeve, the threaded rod being mounted at the top center of the plug assembly.
4. The maintainable grounding device for assisting an on-orbit spacecraft to manually ground according to claim 2, wherein the bead ejection mechanism comprises a bead ejection mechanism and a spring, the bead ejection mechanism is arranged on the inner side of the docking channel, and the spring is arranged on the rear side of the bead ejection mechanism and is used for providing elastic force for the bead ejection mechanism so that the bead ejection mechanism can be ejected into a fixing assembly to prevent the plug assembly from falling off.
5. The maintainable grounding device for assisting an on-orbit spacecraft to manually ground according to claim 4, wherein the top of the docking channel and the mounting posts of the fixed assembly are provided with chamfer structures for guiding the plugging assembly to be smoothly plugged into the fixed assembly.
6. The maintainable grounding device for assisting an on-orbit astronaut in manual grounding according to claim 1, wherein the connecting mechanism comprises an O-shaped terminal and a grounding wire, the O-shaped terminal is fixedly arranged at one end of the grounding wire and used for being connected with a grounding column of the replaceable equipment, and the other end of the grounding wire is fixedly arranged on one side surface of the plug assembly.
7. The maintainable grounding device for assisting an on-orbit spacecraft to manually ground according to claim 1, wherein the fixing plate is of an L-shaped structure, the L-shaped structure comprises a mounting surface and a fixing surface, a plurality of mounting holes are formed in the mounting surface and the fixing surface, and the fixing assembly is fixedly arranged on the surface of the cabin plate through the fixing surface.
8. The device of claim 7, wherein the mounting post is vertically and fixedly disposed at a center of a surface of the mounting surface for mating with the plug assembly.
9. The maintainable grounding device for assisting an on-orbit spacecraft to manually ground according to claim 7, wherein the mounting post is of a hollow cylindrical structure, and a ball socket groove matched with a top ball mechanism of the plug assembly is formed in the mounting post and is used for accommodating the top ball of the plug assembly.
10. An on-orbit assist spacecraft manual grounding maintainable grounding device according to claim 9, wherein said mounting post top is provided with a connecting hole for receiving the bottom of a threaded rod.

Description

Maintainable earthing device for on-orbit auxiliary astronaut manual earthing Technical Field The application belongs to the technical field of aerospace equipment, and particularly relates to a maintainable grounding device for assisting an on-orbit astronaut in manually grounding. Background In modern spacecraft systems, equipment grounding is a key link in ensuring electrical safety and stable operation of the system. In the prior art, the inside and outside of the cabin of the spacecraft are grounded by adopting fixed grounding terminals or welded grounding points, and the structure is fixed in the manufacturing stage, so that a stable grounding path can be provided, but once the grounding path is in ground fault, corrosion or poor contact, the whole cabin board equipment can not be directly maintained or replaced by a spaceman in an on-orbit environment, and the whole cabin board equipment is often required to be repaired or replaced, so that high maintenance cost and time delay are caused. In addition, fixed grounding schemes often require specialized tools or special docking fixtures to accomplish the installation and removal, and are not suitable for astronauts to operate while wearing aerospace apparel outside the cabin. Along with the continuous promotion of space station construction and long-term on-orbit operation task, removable electronic equipment quantity is constantly increased, and the limitation of traditional fixed ground mode is increasingly outstanding, and an on-orbit maintainable ground device which can realize autonomous operation of astronauts, convenient plug, reliable locking and has a reuse function is urgently needed. Although the existing pluggable connection structures can realize modularized replacement to a certain extent, the pluggable connection structures focus on signal or power connection, the reliability and mechanical stability of grounding connection are not enough, and particularly the problems of loosening, shaking or poor contact and the like are easy to occur in a microgravity environment. Meanwhile, part of the structure is huge in size or complex in assembly, so that the operation difficulty of astronauts is increased, and the requirement of space-limited cabin board installation is difficult to meet. Disclosure of Invention It is an object of the present application to provide a serviceable grounding device that assists an on-orbit astronaut in manually grounding. So as to realize the comprehensive technical effects of detachable structure, simple and convenient operation, stable contact and repeated use. Through plug subassembly and fixed subassembly cooperation, make the astronaut can accomplish grafting and locking operation outside the cabin by hand, need not to realize ground connection with the help of specialized tool. To achieve the above object, a first aspect of the present application provides a serviceable grounding apparatus for assisting an on-orbit astronaut in manual grounding, comprising: The plug assembly comprises a plug device, a plug assembly and a plug assembly, wherein the plug device is positioned at the bottom of the plug assembly and can be in butt joint connection with a mounting column of the fixed assembly; the device comprises a plug assembly, a non-falling-out fastening device, a bead ejection mechanism, a connecting mechanism and a replaceable device, wherein the non-falling-out fastening device is positioned at the upper end of the plug assembly, so that an astronaut can lock the plug assembly with the fixed assembly through a manual tool or an electric tool; The fixing assembly is arranged on the surface of a preset installation position of the cabin board where the replaceable equipment is located and comprises a fixing plate and an installation column arranged on the surface of the fixing plate; The plug assembly and the fixed assembly are oppositely arranged, and plug connection can be achieved. According to the specific embodiment of the application, the plugging device is arranged at the bottom of the plugging assembly, the plugging device is a semi-closed butt joint channel, the outer surface of the butt joint channel is provided with a guide groove, and the guide groove is used for guiding the alignment of the butt joint parts when the plugging assembly is plugged into the fixed assembly, so that the plugging is smooth. According to a specific embodiment of the application, the non-falling out fastening device comprises an adjustable threaded rod and a threaded rod sleeve, wherein the threaded rod sleeve is sleeved on the threaded rod, the threaded rod can move in the threaded rod sleeve, and the threaded rod is arranged at the center of the top of the plug assembly. According to the specific embodiment of the application, the bead ejection mechanism is arranged on the inner side of the butt joint channel, and the spring is arranged on the rear side of the bead ejection mechanism and is used for providing elasticity f