The utility model belongs to the technical field of the centrifugation uranium enrichment, concretely relates to frock of changing lower floor host computer and shelving is cascaded in centrifugation. Two bearing channel -section steels, four stands, four two on crossbeams are consolidated the channel -section steel and are constituteed the rectangular frame structure, and the both ends of every bearing channel -section steel are connected with two stands respectively, and the both ends of two crossbeams are connected with two stands respectively, and the bearing channel -section steel is perpendicular with the direction of crossbeam, and bearing channel -section steel below is connected with two stands with consolidating the channel -section steel, the lower extreme of every stand all welds with a PMKD, and every PMKD is connected with the bearing leg wheel, install jackscrew and jackscrew nut on the bearing channel -section steel. The utility model discloses demolish on can directly shelving the slave system with the first layer host computer, all are shelved needn't to demolish its upper strata again, can alleviate intensity of labour greatly, improve labor efficiency, drop the system risk to minimum, have increased the construction security.