Shatt-Al-Basrah Bridge A Swing Bridge with a Hydraulic Drive
Shatt-Al-Basrah Bridge A Swing Bridge with a Hydraulic Drive
Shatt-Al-Basrah Bridge A Swing Bridge with a Hydraulic Drive
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Shatl-<strong>Al</strong>-<strong>Basrah</strong> Brldge. ASwlng brldgewltha hydraullcdrlve3 The rotary driveThe rotary drive to the bridge isvia four plunger cylindersworking in opposed pairs so that two are active (extending),and two passive (retracting), in each direction ofrotation. The cylinders and the dwe system are bothdesignedsothat shouldafailureocwr,the bridge may beoperated by one cylinder.Due to the opposed hydraulic cylinders, the bridge is alwayshydraulically restrained toensurethat innocircumstancescan & run away.Figure 3 shows the drive cylinders. <strong>Al</strong>so in figure 3, thearrangement of the 42 tapered rollers can once more beseen.