Abstract: A fluid pressure operated push beam is disclosed which comprises a plurality of similar rigid open-ended tube sections (1) articulated in head-to-tail relationship around hinge pins (3) perpendicular to a longitudinal median plane of the push beam (10). A number of plates (2) corresponding to the number of hinge pins (3) are connected for tilting movement to respective ones of the hinge pins (3), with the plate portions situated on opposite sides of the hinge pins (3) being disposed in the tubular sections (1) located on the corresponding sides, and the plates having a width smaller than the width of the tubular sections (1).An inflatable hose, such as an inner-arc hose (4), which may be segmented and which has a length shorter than the total length of the series of tubular sections but exceeding the distance between the outer or outermost hinge pins, is provided within the series of tubular sections to extend in longitudinal direction in the space on the same side of the hinge pins (3).