Traveling device for mobile gantry crane, has steering angle fixing section provided to each underframe to fix pivoting bodies to desired steering angles

摘要

The device includes four corner underframes (20) individually provided with front and rear pivoting bodies (30',30) installed with tires (40',40). A hydraulic cylinder (61) is installed to each underframe, to pivot each front pivoting body along a front axis (11'). A link (70) extends from each front pivoting body to the rear pivoting body, to pivot the rear pivoting body along a rear axis (11). - DETAILED DESCRIPTION - A steering angle fixing section is provided to each underframe to fix the pivoting bodies to desired steering angles. A driving unit is installed to each underframe to drive the tires.