Swirl type triangle crossarm hinge space extending arm

Abstract

The invention relates to a coil type triangular horizontal framework articulate space stretch arm, which comprises a plurality of articulated triangular horizontal frameworks, three longitudinal rods and a plurality of opposite angles stiffening cables, wherein, each articulated triangular horizontal framework comprises three triangular articulation joints and three Ti-Ni alloy short rods, and provides the longitudinal rods with lateral support; each triangular articulation joint comprises a 60 DEG connector, a cylindrical joint with stairs, three bolts and two nuts; end heads of each Ti-Ni alloy short rod are fixed in the holes of the 60 DEG connectors through two M2 bolts; two holes used for fixing the opposite angles stiffening cables are further formed on each of the 60 DEG connectors; an M2 thread is arranged on the a thinner end of the cylindrical joint; the cylindrical joint is limited to make three-displacements and two-rotations relative to the connector with 60 DEG through nuts, without limiting the cylindrical joint rotate axially; and the cylindrical joint fixedly connects the longitudinal rods and the 60 DEG connectors through an axial M3 bolt. The invention can be applied in the fields of the space detection arms, the large scale solar battery arrays of spacecrafts, the main structure of space stations, and the like.

Description

Technical field: [0001] The invention relates to a coiled triangular horizontal frame with a hinged space extension arm, which belongs to the technical field of spacecraft design. Background technique: [0002] With the increasing complexity of spacecraft functions, the energy demand for spacecraft increases exponentially, and the area of ​​spacecraft solar arrays also increases exponentially. However, the envelope size of spacecraft is limited by the volume of the payload compartment of the launch vehicle. This requires a space-extending arm that can be retracted in the launch section and deployed in space. my country's future space station will require more than 20kW of energy power. The existing rigid base plate-torsion spring hinged deployment solar wing can no longer meet the demand, and the coiled space extension arm is the best choice for future high-power solar wings. Another example: in order to accurately locate the ground signal source, the electronic reconnaissa...

AI Technical Summary

Problems solved by technology

Due to various reasons, domestic research on space expandable mechanisms started relatively late. Although relevant research has been carried out, there is no coiled space extension arm successfully applied to spacecraft, and foreign technologies are kept secret from China.

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