Height adjustable trestle for erecting of working platform, for example, has at least one strut member of upper frame and cross member rigidly connected by fastening element yet with play allowing relative movement of strut member

摘要

The height adjustable trestle (20) for the erecting of a working platform, for example, has an upper frame (24) height adjustably mounted on pillars (22,23) and interconnected at the top by a cross bar (30). At least one strut member (25,26) of the upper frame and the cross member are rigidly connected by a fastening element (40) yet with play. The cross bar fastened securely on the strut member allows a relative movement of the strut member in relation to the cross bar during the height adjustment.