Lifting structure for hydraulic equipment, has hydraulic pipe passing to buckle level on elastic pebble fixed to support that moves along structure and applies pre-constraint force exercised by actual weight of pebble to pipe

摘要

The structure has a trolley ascending and descending along fixed and expandable masts, and a hydraulic pipe (5) installed in the structure to form an opened buckle (S) towards the height. The pipe passes to a buckle level on an elastic pebble (6) plunging to the buckle top. The pebble is fixed to a support (7) moving along the structure and applying a pre-constraint force exercised by actual pebbles weight to the pipe.