PIG INTERLOCKING MECHANISM AT TIME OF REPAIRING OF PIPE JOINT PART OF EXISTING PIPE

摘要

PURPOSE:To rapidly and easily perform the taking-out of a pig and a residual resin, by connecting and attaching a front side pig to a traction cable so as to be capable of fixing and freeing the same, and freeing said pig when taking out the same from a pipe to wind up the traction cable. CONSTITUTION:A traction cable 4 is pierced through a front side pig 2 so as to be capable of moving said pig 2 forwardly anc backwardly while said pig 2 is connected and attached to the traction cable 4 through clamp collars 28, 29 so as to be capable of fixing and freeing the same. When pigs 2, 3 are taken out from a pipe 1, the front side pig 2 is brought to a free state and the traction cable 4 is wound up to draw out the rear side replacement pig 3. By this method the taking out of the pigs and a residual resin are rapidly achieved.