顶部条形桁架的上部与垂直升降系统相连，底部吊起下部环形桁架，其长度需满

An upper top truss bar connected to the vertical lifting system, lifting the bottom of the lower annular truss, which must meet the length venues hanging point range and the top of the steel beam width requirements Astromesh; Astromesh top rail is provided, inside the annular strip truss guide rails extending within the internal space range; internal truss bar top and bottom rails are disposed perpendicular to each other, and the bottom rail is connected to the imaging system, the imaging system may be (longitudinal) movement of the bottom bar extending inside the rail transverse trusses, but also the internal article shaped truss longitudinal (lateral) movement together.

The upper part of the top bar truss is connected to the vertical lift system, and the lower ring truss is hoisted at the bottom, the length of which meets the requirements of the steel beam suspension point range and the width of the ring truss at the top of the venue; The top and bottom of the inner bar truss are set up with each vertical rail, the bottom rail is connected to the camera system, the camera system can extend the horizontal (vertical) movement of the bottom rail of the inner bar truss, and can move vertically (horizontal) with the internal bar truss.

The upper part of the top strip truss is connected with the vertical lifting system, and the lower ring truss is hoisted at the bottom, whose length shall meet the requirements of the lifting point range of the steel beam at the top of the venue and the width of the ring truss; the top of the ring truss is provided with guide rails, and the inner strip truss can move along the guide rails within the scope of the ring internal space; the top and bottom of the inner strip truss are respectively provided with mutual vertical guide rails, and the bottom guide rails The rail is connected with the camera system. The camera system can not only move horizontally (longitudinally) along the bottom rail of the inner strip truss, but also move longitudinally (transversely) together with the inner strip truss.