DEVICE FOR TRENCHLESS LAYING OF PIPELINES BY PIERCING METHOD Russian patent published in 2010 - IPC E02F5/18 

FIELD: construction.

SUBSTANCE: invention relates to construction, namely to devices designed for trenchless laying of pipelines by method of piercing, and may find application for arrangement of hidden transitions in laying of pipelines, cable communication cables and power transmission lines. Device comprises hollow working tip of conical shape connected via hinged joint with rod installed on flange, which is mounted on front end of laid pipeline in direction of piercing, vibrator of circular oscillations installed inside hollow tip and feeding mechanism. Rod is installed on flange in ball support. At the end of rod in pipeline there is a race rigidly fixed with external teeth and inner bore arranged eccentrically relative to axis of rod, where disk is installed with the possibility of rotation as fixed on shaft of control mechanism drive by direction of pipeline laying, with eccentricity that is equal to eccentricity to inner bore of race. Besides master half-coupling of cross-sliding coupling is installed on shaft drive on overrunning clutch, which is connected to slave half-coupling via intermediate disk, and inner teeth of half-coupling are engaged with external teeth of race. And brake is installed on hub of master half-coupling.

EFFECT: improved accuracy of the pipeline laying process.

2 cl, 5 dwg