JPS6415185A - Method for lining inner surface of pipe - Google Patents

Abstract

PURPOSE:To facilitate the introduction of a wire into a pipe and the drawing out of the wire to the outside of the pipe by providing a unidirectional linking mechanism for transmitting the torque of the wire to a ball guide only in one direction between the wire and the ball guide at the tip. CONSTITUTION:When the coil spring-shaped wire 3 is introduced into the pipe 2, a protrusion 13 provided to the ball guide 1 is engaged with the inclined part 10a of the groove 10 formed in the connector 9 integrated with the wire 3 in the unidirectional linking mechanism, the torque of the wire 3 is transmitted to the ball guide 1, the wire 3 is introduced into the pipe 2 while rotating the ball guide 1 along with the wire 3, and a lining body is introduced into the pipe. The connector 9 is then slightly pulled out, the protrusion 13 is engaged with the annular part 10b of the groove 10, and the wire 3 and the ball guide 1 are disengaged. Under such conditions, a lining material 12 is supplied into the pipe 2, the wire 3 is reversely rotated without forcedly rotating the ball guide 1 and pulled out to the outside of the pipe 2, and the inner surface of the pipe 2 is coated with the lining material 12 by the body 6.