| 摘要 |
<p>PURPOSE:To make operations easier by a method in which the base end of a specific elbow arm for a multi-joint freedom type arm-type water jet-stream trencher is attached to the body of horizontally turnable driver, and a wire sensor and a water jet nozzle for trenching are attached to a U-shaped hand on the tip. CONSTITUTION:The horizontal shoulder joint 15 of an arm-type water jet-stream trencher 12 mounted on a traveler body 11 is turned by an oil-pressure motor 16 to enable a shoulder arm 17 to be turned. The elbow arm 18 of the trencher 12 is made up of the branched left tube fingers 22L and 22L' and right tube fingers 22R and 22R' of a U-shaped hand 21 and upper and lower arms 19 and 20. The arms 17, 19, 20, and 21 are connected with vertical joints 23, 24, and 25, and the arm 18 is allowed to bend and turn within the vertical face by an oil-pressure motor 26 and oil-pressure pistons 27 and 28. Nozzles 33L, 33L', 33R, and 33R' are provided to the fingers 22L, 22L', 22R, and 22R', and cable sensors 34L, 34L', cables 34R and 34R' are each provided between the fingers 22L and 22L', the fingers 22R and 22R', the nozzles 33L and 33L', and the nozzles 33R and 33R'.</p> |
