Device for repairing pipe joints.

摘要

A device for repairing cast iron pipe joints comprises a head (10) having a motor (110) for actuating a tool (60) and a body (44), the head (10) being pivotally connected to the body (44) so that it can be pivoted from an axial position to a radial position within the pipe. In a preferred embodiment, the head (10) includes a motor (110) driving a drill bit (60). A retractable foot (82) is extended to force the head (10) against the pipe wall to be pierced by the drill bit (60), following which sealant is injected into a hollow drill shaft (62) and flows up the helical grooves of the drill bit (60) into the pipe joint cavity (5). Preferably a pair of guide wings (70) maintains the device centred in the pipe and raised off of the pipe floor, and the operator monitors progress of the device through a video monitor (142).