How about front and rear support legs of HZP1600 bridge erection equipment?

gear box of support legs

Front and rear support legs are among key parts of HZP1600 segmental assembly bridger erection equipment. Main function: support and jack the bridge erection equipment, drive it to move forward to cross piers and move laterally, and automatic moving forward and backward.

Front and rear support legs from top to bottom part are made up of sliding cross girder, roller gearbox, support cross girder, transverse moving mechanism, cushion block for adjustment, longitudinal moving mechanism, jacking device and vertical column.