Portable drilling device for hydrogeological drilling

The utility model discloses a portable drilling device for hydrogeological drilling, relates to the technical field of geological exploration, and provides the following scheme aiming at the problem that an existing drilling device for hydrogeological drilling is inconvenient to carry: the portable drilling device comprises a drill rod, the upper end of the drill rod is fixedly connected with a handle, and the lower end of the drill rod is fixedly connected with a drill bit; an annular groove is formed in the end, close to the drill bit, of the drill rod, the part, located in the annular groove, of the drill rod is sleeved with a thrust spring, a transverse plate is longitudinally connected into the annular groove in a sliding mode, and the lower end of the thrust spring is fixedly connected to the transverse plate. The installation plate and the supporting plate can be stored and unfolded, transportation and carrying are convenient, the supporting plate and the installation plate are used in cooperation, the