Rod pin type blind alignment space butt joint mechanism

Abstract

The invention provides a rod pin type blind alignment space butt joint mechanism. An outer truncated cone and an inner truncated cone are installed on two space crafts respectively, one end of a lead screw pushing rod is an outer thread and penetrates through a central hole of a flange to be in threaded connection with a straight thread sleeve, and a boss of the side wall of the lead screw pushing rod is matched with an axial groove formed in the inner wall of the central hole of the flange. The other end of the lead screw pushing rod is a conical face. A radial through hole is formed in the conical face of the outer truncated cone, and a pin is installed in a through hole through a compression spring. The inner wall of the inner truncated cone is provided with an annular groove in the axial direction, the flange is fixed to the bottom face of the outer truncated cone, and the straight thread sleeve pushes the lead screw pushing rod to perform axial motion on the outer truncated cone and pushes the pin to get over the spring and extend out of the outer conical face of the outer truncated cone to be in clearance fit with the annular groove during rotation. The rod pin type blind alignment space butt joint mechanism can perform bidirectional initiative butt joint, is high in butt joint reliability and butt joint speed and can work repeatedly.

Description

technical field [0001] The invention relates to a space docking mechanism, which belongs to the field of spacecraft on-orbit service. Background technique [0002] In recent years, with the advancement of space science and technology, the exploration of unknown stars and the development of outer space resources have become an important direction for the development of human civilization. Whether it is space on-orbit service or deep space exploration, the rendezvous and docking of two spacecraft is often involved. At present, there are roughly four types of docking mechanisms for spacecraft in the world: ring-cone type, rod-cone type, and heterogeneous isomorphic peripheral type. , Handle collision lock. The ring cone type is the earliest docking mechanism. It consists of an inner truncated cone and an outer truncated cone. The inner truncated cone is installed on a series of buffers to absorb impact energy. adopted this method. The rod-cone type and the ring-cone type are...

AI Technical Summary

Problems solved by technology

In order to enable the transfer of astronauts and cargo directly through the docking channel, the Soviet Union and the United States jointly developed a heterogeneous isomorphic peripheral docking mechanism in 1975. When two spacecraft approached, the three guide lobes were inserted into the gaps between the other's guide lobes. , this docking mechanism effectively overcomes the shortcomings of the rod-cone mechanism, but the multiple guide flaps and their action mechanisms lead to complex structures and difficult docking

Both the cross-shaped docking mechanism developed by ESA and the three-point docking mechanism developed by Japan belong to the gripper collision lock mechanism. The difference between the two is only the layout of the collision lock and the connector. This kind of docking mechanism has no sealing performance and no channel. The design of the port is only suitable for the docking of unmanned spacecraft

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