EXCAVATOR FOR INSERTION PIPE

• Main Author: MUKAI TOSHIO
• Format: Patent
• Language: English
• Published: 26.04.1994
• Edition: 5
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

PURPOSE:To miniaturize an excavator for insertion pipes and make the operation easy, by supporting a pushing and drawing device provided with a hydraulic cylinder or the like by a fitting height-adjustable support and changing the fitting position of the support in accordance with the propulsive case and the drawing case of pipes. CONSTITUTION:A pushing and drawing device 5 provided with a hydraulic cylinder 20 or the like is held by a bearing body 2 having a cut-off part 9 to avoid interference with a propulsive pipe (b) at the lower side and a height- adjustable screw 4 and a supporting body 2 comprising a fitting plate 7, a box type receiver 8, etc., and having a height-adjustable screw 12. Next, when pushing the propulsive pipe (b), the supporting body 2 is placed at the opposite side to the excavation side in the oscillation hole (d) and when drawing the pipe, it is placed at the excavation side. After the propulsive pipe (b) is pressurized by the actuated hydraulic cylinder 20, the cylinder 20 is reversely actuated to pull out. In this way, the device is simplified and miniaturized and also the work is facilitated.