| 摘要 |
PURPOSE:To surely maintain fastening conditions of a pipe without looseness of a vice by rotating a warm gear so as to rotate a warm wheel, and strongly rotating a guide plate so as to move vice in the diameter direction. CONSTITUTION:Since it is necessary to move a vice 1 to the inner diameter side when a pipe is held, a guide plate 3 is rotated such that the rotation thereof serves to move a pin 5 to the inner diameter side through a connection hole 4, and thereby a nut 8 of a warm gear 7 is rotated. A claw 2 is moved to the inner diameter direction through the pin 5 by fastening the nut 8 strongly to an extent, thereby the pipe is strongly fastened. When the vice 1 is forced to move in the outer diameter direction with the application of outer force to the pipe, and action for rotation the pin to move the vice 1 in the outer diameter direction is generated, however, there is no rotation of the warm gear 7 and the holding conditions are maintained. |
