HORIZONTAL DRILLING MACHINE Russian patent published in 2002 - IPC

FIELD: construction engineering, particularly, horizontal drilling machines for trenchless laying of pipelines and their repair. SUBSTANCE: horizontal drilling machine includes guide device, axial feed device, drilling head with rigidly secured vibrator of circular vibrations. Drilling head is connected with casing pipe by means of compensating device and made in the form of a length of pipe with vibrator of circular vibrations rigidly secured coaxially to pipe axis, and cylindrical body fitted on said pipe length with the help of rolling members ensuring rotation but excluding its axial displacement relative to common axis. Secured to bottom end of cylindrical body are cutters, and lifting blades are attached to cylindrical body internal surface. Vertical segment partition is installed immediately adjacent to end plate of cylindrical body internal part but without restriction of freedom of its rotation relative to said pipe length. Said vertical segment partition is welded over perimeter to pipe length and connected to inclined sheet for ground removal. EFFECT: higher efficiency of pipeline laying in hard and monolithic grounds. 3 cl, 4 dwg