The invention relates to the technical field of oil and gas resource drilling tools, in particular to a variable-
diameter intelligent underground
turbine generator
test board which comprises a generator fixing module, a magnetic ring clamping module and a driving digital display module. The generator fixing module comprises a generator, a fixing support, a pushing and clamping sliding block, a lead screw motor and a pushing and clamping lead screw nut. The magnetic ring clamping module comprises a magnetic ring, a clamping sliding block, a clamping lead screw nut, a clamping lead screw, a large
bevel gear, a small
bevel gear, a
bevel gear transmission shaft, a transmission gear, a driving gear ring, a hexagonal stud, a hollow gear motor, a hollow connecting shaft, a
tapered roller bearing set, a bearing upper base, a large nut, a bearing lower base, a hollow belt wheel, a rear bearing, a front bearing and a middle shell. The device comprises a thin bearing pack, a clamping base body, an outer bearing, an outer bearing base body, an inner bearing and a rack, and the driving digital display module comprises a belt wheel motor, a controller, a power supply and a power analyzer. Through the intelligent variable-
diameter clamping device, underground
turbine generators of different sizes and powers can be tested, the application range is wider, and the working performance is more stable.