Expandable triangular prism space truss unit structure

The invention discloses an expandable triangular prism space truss unit structure for building a space truss, which comprises a truss cross beam, an octagonal joint frame, a rod group A, a rod group B, a locking nut and the like, the truss cross beam comprises a sliding block, a spring, a spring seat and a spring seat fixing pin, and the octagonal joint frame comprises a right-angle joint, a 45-degree joint and a joint magnet. The rod group comprises a rod group main body and a magnet. A certain method is provided for building of a space structure, the installation problem of loads on the truss is considered, meanwhile, the truss units can be expanded to a corresponding degree according to actual conditions, and different requirements are met. 本发明公开了一种用于空间桁架搭建的可扩展的三棱柱空间桁架单元结构，由桁架横梁、八角接头架、杆组A、杆组B、锁紧螺母等组成，桁架横梁包括滑块、弹簧、弹簧座、弹簧座固定销，八角接头架包括直角接头、45°接头、接头磁铁，杆组包括杆组主体和磁铁。本发明为空间结构的搭建提供了一定的方法，对桁架上载荷的安装问题均有考虑，同时桁架单元可以根据实际情况进行相应程度的扩展，满足不同的需求。