DEVICE FOR TRENCHLESS REPLACEMENT OF UNDERGROUND PIPELINES Russian patent published in 2024 - IPC F16L1/28 

FIELD: construction.

SUBSTANCE: invention can be used for trenchless replacement of pipelines during the repair and reconstruction of underground utilities. The device for trenchless replacement of underground pipelines is equipped with a means for securing the new pipeline, which consists of levers, a pin and a platform with eyes. The levers are hingedly connected to the links and to the eyes, respectively. The pin is installed in the platform and in the levers. The ends of the studs are equipped with nuts with spherical washers. The pipe-destroying working body includes a split housing in which a gear shaft is installed, mated to a gear wheel, a pipe, at one end of which there is an internal left-hand thread, and at the other end there is an internal right-hand thread. Forks with disc blades are threaded into the pipe at both ends. A reamer for increasing the diameter of a well consists of at least two parts of a truncated cone, a shaft and covers installed at the ends of the shaft. One end of the shaft has an external left-hand thread, and the other end has an external right-hand thread. A bushing is also installed on the shaft on which a stationary element is mounted. At the ends of the shaft, movable elements are installed along the threads; parts of the truncated cone are hingedly connected to the fixed and movable elements using links.

EFFECT: ability to simultaneously destroy old pipelines and pull through new pipelines of different diameters with greater reliability.

1 cl, 7 dwg