JP2500413B

PURPOSE:To increase the reliability of operation. CONSTITUTION:When a cylinder 10 is extended and a fixing member 13 is pushed by a pressing device 29, a connecting rod 8 and a lever 33 are rotated around a pivot shaft 18 and a mounting shaft 35, respectively. A lock roller 22 comes out of a connection lock part 9a by the rotation of the rod 8, is locked on a loosened lock part 9b, and moves along the lock part 9b. The lever 33 pushes a protrusion 1b when the lock roller 22 moves along the loosened lock part 9b to rotate clasps 4, 5, and 6 in circumferential direction of a transport pipe 1. A retaining pin 36 is disengaged from a hook fitting 1c by this rotation. Because a lever 33 touches a stopper 37 when the pin 36 is disengaged, the rotation of the connecting rod 8 around the pivot shaft 18 is stopped, and the clamper 4 is rotated integrally with the rod 8 around a connecting pin 7 between the clampers 4 and 5 to separate from the transport pipe 1. Thus a proper looseness can be maintained while the roller 22 is engaged with the loosened engaging lock part 9b, and all the clamps are rotated securely.