| 摘要 |
PROBLEM TO BE SOLVED: To provide a timbering pitching device by enhancing execution quality and safety to enable pitching work of timbering materials. SOLUTION: The timbering pitching device 10 includes a holding part 107 detachably gripping the timbering materials 40, transfer rails 101 installed along the excavation direction of a tunnel 20 and constituting so that the holding part 107 can reciprocate, a holding part support pin 111 rotatably supporting the holding part 107 around a first rotary axis where the holding part 107 crosses an axis along the transfer rail 101, and a hydraulic lifter 106 for moving the holding part 107 in the direction along the wall face of the tunnel 20. COPYRIGHT: (C)2004,JPO
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