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

摘要

Disclosed is a vibrating-type hard rock cutting mechanism with the function of directional high-speed abrasive jet advanced slitting. When the vibrating-type hard rock cutting mechanism works, an outlet of a high-pressure abrasive jet generation system is connected to a cutting mechanism abrasive jet inlet (5-1), and an abrasive jet enters an abrasive jet nozzle (1-2) through channels in a flow distribution plate (5), a cutting main shaft (3) and a disc-shaped hob (1) and forms a directional high-speed abrasive jet (20). The cutting main shaft (3) is directly driven to rotate by an axial permanent magnet motor (13). The cutting mechanism makes the disc-shaped hob (1) vibrate under the action of a vibration motor (15), and a macro crack is formed in a rock mass by means of a rotating abrasive jet. By swinging the cutting mechanism, the rotating disc-shaped hob (1) vibrates and is wedged into the formed crack to quickly expand and fracture the crack, and the efficient cutting and crushing of a hard rock mass are achieved.