Resumen

The bar for mobile lattice structures that constitutes the object of this invention is composed of two hollow bars (2), connected to each other by another inner core bar (1) narrower than the outer bars with a slot along its entire length (1a)), which allows these outer bars to slide over it by extending the operating lengths of the entire bar. Said central groove has a rough surface (1b) that favors the resistance to displacement of the outer bars (2) with respect to the center (1) when the complete bar is fixed and two stops (1c) at its ends that determine the maximum opening of the final bar. In addition, the outer bars (2) that slide on the inner bar consist of a hole (2b) at its end, each of which, where the pressure system or halfen (3) that immobilizes the parts in the length determined for use. Additionally, the bar of the invention, comprises the anchoring system (2a) to the knots of the structure by means of an internal threading that allows the transmission of stresses between rods allowing operating under a pure axil. (Machine-translation by Google Translate, not legally binding)