INSTALLATION FOR REPLACEMENT OF UNDERGROUND PIPE WITH REPLACEABLE TUBE Russian patent published in 2016 - IPC F16L55/18 F16L1/28 

FIELD: construction.

SUBSTANCE: invention relates to construction of pipelines and can be used for drawing "mole" and new pipe inside old at trenchless pipeline routing. Installation for replacement of underground pipe comprises a supporting plate from which perpendicularly extends steam hydraulic cylinders, parallel to each other. Cylinders operate cyclically together with traction bridge with cable gripper, thus providing sequence of traction rope strokes, pulling "mole". "Mole" through an old pipe stretches in replaceable pipe that was broken, cut or expanded by said "mole". Supporting plate is equipped with an opening, while cylinders are arranged so as to allow "mole" to be completely retracted to plant. Support bridge connecting side opening in support plate is installed with possibility of its removal for placement of second cable gripper to hold said rope at reflux of traction bridge. In end of operation drawing to pulling "mole", support bridge can be removed.

EFFECT: higher rigidity with minimum weight, simplified drawing "mole".

4 cl, 5 dwg