Distributed coal cutting device for longwall face of coal mine

A distributed coal cutting device for a Longwall face of a coal mine, comprising:

• coal cutting units, wherein each coal cutting unit comprises one coal cutting machine and two hydraulic supports, the two hydraulic supports are arranged side by side, the arrangement direction of the two hydraulic supports is parallel to the coal wall of the Longwall face, the two hydraulic supports are capable of supporting a roof of the Longwall face, the coal cutting machine is connected with one of the two hydraulic supports, the coal cutting machine is rotatably connected with the two hydraulic supports, the coal cutting machine is parallel to the coal wall of the Longwall face relative to rotating axes of the two hydraulic supports, and the coal cutting machine is capable of carrying out coal cutting operation;
• and
• the number of the coal cutting units is multiple, the multiple coal cutting units are arranged side by side, and the arrangement direction of the multiple coal cutting units is parallel to the coal wall of the Longwall face;
• the coal cutting machine is connected with the hydraulic support through a rotating assembly, the rotating assembly comprises a bottom plate, a connecting rotating disc and a connecting pin shaft, the connecting rotating disc is rotatably connected with the bottom plate, the connecting pin shaft is fixed to the connecting rotating disc, the coal cutting machine is rotatably connected with the connecting pin shaft, the rotating axis of the connecting rotating disc is perpendicular to the axis of the connecting pin shaft, and the rotating axis of the connecting rotating disc and the axis of the connecting pin shaft are parallel to the coal wall of the Longwall face;
• wherein the coal cutting machine comprises a roller, a first power module, a pushing arm, a machine frame and a lifting arm, the roller is in transmission connection with the first power module, the first power module is capable of driving the roller to rotate, the rotating axis of the roller is parallel to the coal wall of the Longwall face, a plurality of picks are arranged on the peripheral face of the roller, the first power module is connected with the machine frame through the pushing arm, the length of the pushing arm is capable of being adjusted, the pushing arm is arranged perpendicular to the rotating axis of the roller, the machine frame is connected with the hydraulic support through a first universal joint, the machine frame is connected with the lifting arm through a second universal joint, the end, away from the machine frame, of the lifting arm is rotatably connected with the connecting pin shaft, and the length of the lifting arm is capable of being adjusted.