Nut rotating device

The invention provides a nut rotating device, which belongs to the technical field of mechanical disassembly and assembly and comprises a shell, a power supply, a motor, bearing fixing blocks, a transmission mechanism, a driving gear, a driven gear, a nut sleeve and a fixing mechanism, the power supply is positioned at the bottom in the shell, the motor is positioned at the top of the power supply, and the bearing fixing blocks are fixed in the shell. The transmission mechanism is arranged on the bearing fixing block in a penetrating mode, the transmission mechanism is sleeved with the driving gear, the nut sleeve is of an opening type, the nut sleeve is sleeved with the driven gear, the driven gear is meshed with the driving gear, and the fixing mechanism is installed on the side face of the shell. The nut sleeve is designed in an opening mode, when a nut on the threaded rod needs to be rotated, objects connected to the two ends of the threaded rod do not need to be dismantled, operation is convenient, in ad