Triangular cable-strut hinged deployable truss

Abstract

The invention provides a triangular cable pole hinge type foldable truss which comprises a guide rod, a folding cable, a tension cable, a plurality of truss units and a plurality of hinge rods. The truss units are triangular rigid frames. All the triangular rigid frames are sequentially connected with the guide rod from top to bottom. The triangular rigid frame at the bottommost portion is fixedly connected with the guide rod. The other triangular rigid frames arranged upwards along the guide rod are movably connected with the guide rod. The triangular rigid frames are connected through hinge rods. The folding cable sequentially penetrates through the two ends of all the triangular rigid frames from top to bottom and is fixedly connected with the triangular rigid frames at the top and at the bottom. The tension cable is sequentially penetrates through the two ends of the triangular rigid frames from top to bottom in a zigzag shape and is fixedly connected with the triangular rigid frames at the top and at the bottom. The triangular cable pole hinge type foldable truss is simple in system configuration, high in shrinking percentage and capable of stretching out and drawing out repeatedly, spacecraft space maneuvering or ontrack maintenance is facilitated, the ontrack folding requirement of a future large-scale soft solar cell array and the like can be met, and the application prospects are wide.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a triangular cable-strut hinged expandable truss. Background technique [0002] With the development of large spacecraft such as space stations and deep space probes, the problem of limited load envelopes has become more and more prominent, which has led to the development of various space deployable structures, such as deployable trusses and inflatable structures. At present, the commonly used articulated expandable truss extension arm is generally composed of a folding truss, a storage box, a transmission device, and a spreader, etc., which can realize the extended support of accessories for a long distance, but there are the following disadvantages: 1) the corresponding to the expandable truss The transmission device requires high synchronization and complex structure and composition; 2) The rigid frame and hinged rods of the deployable truss are mostly in a stacked form, w...

AI Technical Summary

Problems solved by technology

At present, the commonly used articulated expandable truss extension arm is generally composed of a folding truss, a storage box, a transmission device, and a spreader, etc., which can realize a long-distance extension support for accessories, but has the following disadvantages: 1) the corresponding length of the expandable truss The transmission device requires high synchronization and complex structure and composition; 2) The rigid frame and hinged rods of the deployable truss are mostly in a stacked form, which is not integrated enough, which is not conducive to improving the shrinkage rate; 3) It does not have the function of on-orbit folding, which is not conducive to space maneuvering or maintenance

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