| 摘要 |
A bumper crane substructure unit comprising a crane buffer mounted on the rail axis and interconnected with a moveable crane construction and a kinetic energy absorption rotor arrangement fixed to a building wall (17) on the line of the travel of the crane buffer, in which kinetic energy of progressive movement is transformed into kinetic energy of rotational movement, wherein the arrangement comprises a moveable beater element (10) cooperating with racks (2) interengaged with toothed wheels (3, 3a, 3b, 3c) driving the kinetic energy rotor accumulators (4, 5, 6) of a given moment of inertia, characterized in that at least two racks (2) of the kinetic energy absorption rotor arrangement (1) cooperating with the beater element (10) interengages with toothed wheels (3, 3a, 3b, 3c) of the kinetic energy rotor accumulators (4, 5, 6) of differentiated capabilities of energy accumulation, wherein between the beater element (10) and racks (2) interengaged with toothed wheels (3, 3a, 3b, 3c) of kinetic energy rotor accumulators (4, 5, 6) differentiated gaps (7, 8, 9) are defined providing differentiated idle stroke of the beater element (10) relative to the racks. |
