Integral hydraulic cutter head with replaceable blades

The invention relates to the technical field of cutterheads, and discloses an integral hydraulic and blade-replaceable cutterhead which comprises a main body mechanism, a connecting mechanism and a driving mechanism, the connecting mechanism is located at the upper end of the main body mechanism, and the driving mechanism is located at the upper end of the main body mechanism. The main body mechanism comprises a cutter head body, a hydraulic motor, a first threaded connection hole, a fixing sleeve and a first installation piece, the hydraulic motor is fixedly installed at the lower end of the cutter head body, and the first threaded connection hole is fixedly formed in the upper end of the middle end of the cutter head body. According to the overall hydraulic and blade-replaceable type cutter head, different types of blades can be connected by forming different threaded connecting holes, the overall structural stability of the cutter head is improved, a single blade can be installed by forming a second thread