FLEXIBLE-SUPPORTED WORM-AND-GEAR MECHANISM

The present invention provides a flexible-supported worm-and-gear mechanism. The worm-and-gear mechanism comprises a worm-and-gear mechanism housing, a worm gear, a nut, an adjusting mechanism, an elastic mechanism, a worm assembly, a fixing plate, a wave bead jacking column, a stabilizing screw, a positioning screw, and a shaft sleeve, wherein the worm assembly comprises a mounting base, a worm sleeve, a nut, a worm bearing, and a worm. The present invention has the advantages that the worm sleeve is adjusted by means of the adjusting mechanism and the elastic mechanism to enable the engagement center distance between the worm and the worm gear to float slightly within the range of D±Δδ, where D is the center distance, and Δδ is a machining error of the worm gear and the worm; it can be ensured that the worm gear and the worm continuously maintains line contact on an engagement surface, and thus the rotation accuracy of the worm gear and the worm is ensured, thereby prolonging the service life, reducing nois