Lifting mechanism of horizontal belt type abrasire cloth bed working table

The utility model relates to a lifting mechanism of a horizontal belt type sand cloth bed working table, which comprises a connecting tube, a lifting screw and a base, wherein one end of the lifting screw is fixed in a bearing seat; a pinion gear and a bull gear are arranged in the base, and the pinion gear is meshed with the bull gear in a transmission way. The utility model adopts a 45 DEG helical gear to make vertical transmission, thus, operation is steady, and noise is low; the utility model adopts a screw bolt as a connecting pin, and is convenient for dismounting and repair under the condition of no special tools; the lifting screw is supported by two thrust ball bearings, bearing capability is high, screw rods are not loosened and the lifting of the working table is stable and precise. The utility model has the advantages of simple transmission structure, convenient installation and use and stable and reliable working.