Sampling device for geological survey of hydraulic ring

The sampling device comprises a base, the inner wall of the base is connected with a drill rod through threads, a drill bit is fixed to the outer wall of the bottom of the drill rod through a bolt, atorque amplifying mechanism is arranged at the top of the base, and two sleeves are fixed to the outer wall of the bottom of the base through bolts. The inner wall of the sleeve is connected with a threaded rod through threads, the outer wall of the bottom of the threaded rod is rotationally connected with a supporting block, and pedals are welded to the outer walls of the supporting blocks. The second bevel gear and the first bevel gear are arranged, the diameter of the second bevel gear is three times to five times that of the first bevel gear, high-speed and low-torque rotation of the firstbevel gear can be converted into low-speed and high-torque rotation of the second bevel gear through the meshing effect of the second bevel gear and the first bevel gear; and the torque transmitted to the drill rod is doubly