| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure fluid feeder for compensation of propulsive-direction having one hose for pressure fluid and no complicated device without complex operation is required. SOLUTION: In the buried-pipe propulsive-direction compensator, in which a cutting edge is connected freely oscillating manner by at least two water-pressure cylinder for compensation at the edge of the buried-pipe to be propelled, one pressure water supply hose connected with a water-pressure source comprising a water tank, a water-pressure pump or the like installed on the outside of the buried-pipe is passed into the buried-pipe and extended up to the water-pressure cylinder for compensation while the supply of pressure water is connected with valves for changing over the expansion and contraction of each water-pressure cylinder for compensation to an interior room of head side and an interior room of rod side, each water-pressure cylinder for compensation is connected through valves for selecting driving selecting water-pressure supply to the water-pressure cylinder only necessary for compensation of propulsive-direction and the pressured water pushed out from another section is discharged to an outside of leading pipe or an inside of leading pipe when the pressured water is supplied to one of the internal room of head side or rod side. COPYRIGHT: (C)2008,JPO&INPIT |
