Hydraulic grab bucket for rotary excavating guide rod type narrow wall seepage-proofing construction

The invention discloses a hydraulic grab bucket for rotary excavating guide rod type narrow wall seepage-proofing construction. The hydraulic grab bucket is characterized by comprising a power head, a rotary excavating drill rod, a guide frame, hydraulic cylinders and two grab bucket bodies; the two ends of the rotary excavating drill rod are connected with the guide frame and the power head respectively, and the power head drives the rotary excavating drill rod to drive the guide frame to move; the hydraulic cylinders are installed on the guide frame, connected with the two grab bucket bodies in a transmission mode and used for driving the two grab bucket bodies to be folded or unfolded. The hydraulic grab bucket has the advantages of being simple in structure, low in cost, simple in construction process, short in construction cycle and high in working efficiency.