CUTTER HEAD FULLY EQUIPPED WITH NOZZLES AND TUNNELING MACHINE Russian patent published in 2023 - IPC E21D9/10 E21C35/183 

FIELD: tunnelling machines.

SUBSTANCE: group of inventions relates to a cutting head fully equipped with nozzles and a tunnelling machine containing a cutting head fully equipped with nozzles. The fully nozzled cutting head comprises an outer head body; an inner splined bushing mounted at one end of the outer head body, wherein a first cooling cavity is formed between the outer head body and the inner splined bushing; an inner head body mounted on the other end of the outer head body, wherein a second cooling cavity is formed between the outer head body and the inner head body, the second cooling cavity being connected to the first cooling cavity. In this case, one end of the inner body of the head, closest to the inner splined bushing, is connected to the inner splined bushing, one end of the inner body of the head, remote from the inner splined bushing, is connected to one end of the outer body of the head, and one end of the inner splined bushing, remote from the inner head body is connected to the other end of the outer head body. A tunnelling machine is also proposed, containing the claimed cutting head fully equipped with nozzles.

EFFECT: improved cooling of the cutting head and its teeth both at the front and at the rear end of the cutting head.

11 cl, 11 dwg