HOSE WHIRL STOP DEVICE

PROBLEM TO BE SOLVED: To inexpensively prevent co-rotation of an injection hose, by facilitating handling, without restricting the ground improving depth by attaching a rotation preventive member. SOLUTION: The injection hose 4 is fixed to a hose guide 8 by operating a hose fixing member 5 of the hose guide 8 attached to a driving device 11 by a cylinder 7 operating by interlocking with an oil chuck 12. Thus, a swivel joint 1 does not co-rotate in response to rotation of a hollow excavation shaft 10, and the injection hose 4 is not wound around the hollow excavation shaft 10. When regrasping the hollow excavation shaft 10, since the hose fixing member 5 releases a fixation of the injection hose 4 by interlocking with a release of the oil chuck 12, regrasping work can be performed without damaging the injection hose 4. COPYRIGHT: (C)2009,JPO&INPIT