Heavy load transporting system - has walking frame sliding on girders supported on extensible feet

摘要

The heavy load transporting system comprises a platform for the load on a supporting frame and a pressure-operated shifting mechanism. The frame under the platform (2) is of the walking type, having parallel girders (3, 4, 5) on extensible vertical feet (6, 7, 8). These are alternately pressurised, so that one or more girders are unloaded, after which the platform is moved for the length of a step, sliding along a stationary girder. The shifting mechanism can comprise rams equal in number to the girders, each piston sliding in the horizontal direction and being coupled to a ram.