TUNNELLING MACHINE FOR WORKING WITH HARD ROCKS Russian patent published in 2019 - IPC E21D9/10 

FIELD: soil or rock drilling; mining.

SUBSTANCE: tunnelling machine comprises: a cutting disc, a drive system, a main beam comprising a front main beam and a rear main beam hinged to said front main beam; wherein said cutting disc is located on said drive system, and said drive system is located on said front main beam. System providing forward movement, support and step change, used to provide forward movement of said tunnelling machine, wherein said system providing forward movement, support and pitch change comprises motor device; said engine is respectively connected to said front main beam and said rear main beam, wherein said propulsion device is configured to adjust angle between said front main beam and said rear main beam when turning during driving. Said front main beam and said rear main beam are respectively made in the form of hollow housings. At that, rear end part of said front main beam comprises first reinforcement elements, and front end part of said rear main beam comprises second reinforcement elements, wherein said first reinforcing elements and said second reinforcement elements by means of pins to arrange rear end portion of said front main beam and front end portion of said rear main beam superimposed on each other.

EFFECT: invention relates to construction machines, particularly, it relates to tunnelling machine for working with hard rocks.

7 cl, 4 dwg