| abstract |
The invention provides a cutter head of a tunnel boring machine with high-pressure water jet assisted rock breaking, comprising a cutter head body, a first hob assembly, a second hob assembly and a scraper arranged on the cutter head body; a first hob; The assembly and the second hob assembly both include a rotating shaft and a plurality of hobbing blades arranged on the rotating shaft; the scraper is in the shape of a plowshare, and a nozzle for introducing high-pressure water is arranged on the blade body under the scraper. The end is provided with a pair of nozzles, and the angle between the spraying direction of the nozzles and the surface of the cutter head body is 30°; the rotation areas of the first hob assembly and the second hob assembly intersect; the first hob assembly is provided with There is a hob that moves along the spray trajectory of each nozzle on the face. The invention utilizes the scraper, the hob and the high-pressure water jet to combine with each other to efficiently crush the face during tunnel excavation, which can not only prolong the service life of the scraper and the hob, but also greatly improve the tunnel excavation efficiency. |