Directional drilling machine power head with rotation angle control and braking functions

The utility model belongs to the technical field of coal mine drilling machines, and relates to a directional drilling machine power head with rotation angle control and brake functions, which comprises a main motor, a transmission and a main shaft, the transmission is provided with a driving shaft, one end of the driving shaft is connected with the main motor, and the driving shaft is in meshing transmission with the main shaft through a gear in the transmission. And the other end of the driving shaft is connected with an angle regulator through a transmission. The angle regulator is arranged on one side, far away from the main motor, of the speed changer, and the transmission shaft in the angle regulator is fixedly connected with the driving shaft in the circumferential direction, so that accurate and efficient regulation of a tool face angle is realized through the angle regulator with accurate angle regulation, locking and rotation prevention functions; and the structure of a rotary braking device of the