Vibrating type hard rock cutting mechanism with function of directional high-speed abrasive jet advanced slitting

A vibrating type hard rock cutting mechanism with a function of directional high-speed abrasive jet advanced slitting, comprising a disc-shaped hob, a cutting main shaft and a valve plate, wherein

• an outer side of the valve plate is provided with an abrasive jet inlet, an inner side of the valve plate is provided with an arc-shaped groove flow channel, and the abrasive jet inlet and the arc-shaped groove flow channel are communicated by a first flow channel;
• the inner side of the valve plate and both sides of the arc-shaped groove flow channel are provided with a rotating dynamic seal ring groove, an O-ring is mounted in the rotating dynamic seal ring groove, and a sealing connection between the valve plate and the cutting main shaft is achieved by the O-ring;
• a group of second flow channels are evenly arranged in the cutting main shaft, and one or more of the second flow channels are always maintained to be communicated to the arc-shaped groove flow channel during rotation of the cutting main shaft;
• and
• the disc-shaped hob comprises a cutter body and a group of alloy cutter heads, a group of third flow channels are arranged in the cutter body, the third flow channels or branches of the third flow channels extend to an edge position of the cutter body, cuts are processed at a corresponding position to inlay abrasive jet nozzles, the alloy cutter heads are circumferentially mounted between the adjacent abrasive jet nozzles, and the cutter body is fixed to a front end of the cutting main shaft through a first fastening bolt to ensure connection between the third flow channels and the second flow channels,
• wherein a first static seal ring groove is provided at a joint position between the cutter body and the cutting main shaft, and a rubber O-ring is mounted in the first static seal ring groove.