| 摘要 |
FIELD: machine building.SUBSTANCE: method involves drawing of a cap through an old pipe by means of a pulling rope; the above cap consists of a tip and a cylindrical body. A replacement pipeline is attached to rear part of the cap cylindrical body; the rollers, the rotation axes of which are perpendicular to the old pipe axis, are located on a conical tip of the cap.EFFECT: improving passing ability of a tip, reducing equipment loads and increasing the length of a drawn pipe.2 dwg |
