DEVICE FOR TRENCHLESS REPLACEMENT OF UNDERGROUND PIPELINES Russian patent published in 2022 - IPC F16L1/28 

FIELD: construction.

SUBSTANCE: invention relates to construction and can be used for trenchless replacement of old underground pipelines. A device for trenchless replacement of underground pipelines contains a mechanism for impacting a broken pipe, a pipe breaking body, an expander for expanding the well, pressing broken pipe fragments into the surrounding soil and pulling in a new pipe, a connecting element with a pipe breaking body. The specified connecting element is a chain, while the impact mechanism on the pipe being destroyed is made in the form of expansion elements located on the said chain, installed with the possibility of interacting with the block on the anchor in the receiving pit.

EFFECT: rejection of the use of an expensive, difficult to manufacture, subject to breakage and wear of the percussion mechanism, simplification of the installation of a pipe breaking body, an expander for increasing the well and tightening a new pipe.

3 cl, 2 dwg