Lattice truss assembled rising stage platform - with sockets in right angled triangular trusses and ring passages in plugs

摘要

The stage platform comprises a number of shaped-bar lattice trusses, connected lengthways and crossways. These are right-angled-triangle-sectioned, with a socket on one short side and a holed insertion piece in the opposite corner. For each truss there is a rear support which can be held on the lower lying truss socket in the same truss plane. - Each of the insertion pieces has a passage in the form of a ring (23), opposite one of the short sides (17). Cross connection of the adjacent ascending rows of trusses (16) is provided by similar but upright trusses, set in rows at a constant height. The sockets (18) on these combine with the rings and, where necessary, the spacers (34) for height compensation, to serve as the rear end supports for the trusses in the ascending rows.