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    • 3. 发明专利
    • Reconstruction method for manhole and in-cutter device for reconstructing manhole
    • 用于重建曼彻斯特管理和切割装置的重建方法
    • JP2005030008A
    • 2005-02-03
    • JP2003194184
    • 2003-07-09
    • Chichibu Concrete Kogyo KkNitto Koji KkShibuya Kensetsu Kk日東工事株式会社澁谷建設株式会社秩父コンクリート工業株式会社
    • ISHIKAWA SHUICHIONDA MINORUSHIBUYA HIROSHI
    • E02D29/12E01C23/09
    • PROBLEM TO BE SOLVED: To surely improve durability after reconstruction.
      SOLUTION: A concrete structure C is cut from the inner peripheral side by rotating a cutter 102c of an in-cutter device 100, and after dividing the structure into upper concrete structures Cad, Cru and Crl and lower concrete structures Crl, Csl and Cst, a pavement part R is cut from the surface side by rotating a cutter part 202C of an out-cutter device 200, and is divided into an inner peripheral side pavement structure Ri and an outer peripheral side pavement structure Ro. The upper concrete structures Cad, Cru and Crl are removed by being still integrally suspended with the inner peripheral side pavement structure Ri and a manhole frame 2, and corresponding new concrete structures CadN, CruN and CrlN are arranged on the remaining concrete structures Crl, Csl and Cst, and a new manhole frame 2N is arranged, and a filler is filled between the frame and the remaining outer peripheral side pavement structure Ro.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:确保改善重建后的耐久性。 解决方案:通过旋转切割器装置100的切割器102c从内周侧切割混凝土结构C,并且在将结构分成上混凝土结构Cad,Cru和Crl以及下混凝土结构Cr1,Cs1 通过旋转切割器装置200的切割器部202C,从表面侧切下路面部R,并将其分割为内周侧路面结构Ri和外周侧路面结构Ro。 上部混凝土结构Cad,Cru和Crl通过与内周边路面结构Ri和井眼框架2仍然整体地悬挂除去,并且相应的新混凝土结构CadN,CruN和CrNN被布置在剩余的混凝土结构Cr1,Csl 和Cst,并且布置新的检孔架2N,并且在框架和剩余的外周边路面结构Ro之间填充填料。 版权所有(C)2005,JPO&NCIPI
    • 4. 发明专利
    • UNDERGROUND PIPE JACKING DEVICE AND UNDERGROUND PIPE JACKING METHOD
    • JP2000045688A
    • 2000-02-15
    • JP20950898
    • 1998-07-24
    • NITTO KOJI KK
    • ISHIKAWA SHUICHI
    • E21D9/06
    • PROBLEM TO BE SOLVED: To provide a compact underground propulsion device capable of being installed in a narrow shaft. SOLUTION: An underground pipe jacking device 3 in a starting shaft 1 has a mainbody 5 moved along a guide rail 4. The mainbody 5 has a pass-through portion 6 in which an embedded pipe 2 passes. The pass-through portion 6 is mounted with a demountable thrusting member 7. (a) The thrusting member 7 is provided on the mainbody 5 to thrusting the rear end of the embedded pipe 2 to be jacked into a ground. (b) The thrusting member 7 is removed to connect the end of the embedded pipe 2a through the pass-through portion 6 of the mainbody 5 to the rear end of the embedded pipe 2. (c) The mainbody 5 is moved backward to be removed from the embedded pipe 2a. The thrusting member 7 is mounted again and the rear end of the embedded pipe 2a is thrust to be jacked into the ground. The following pipe is thus connected to preceding pipe through the pass-through portion 6 of the mainbody 5. The stroke of a machine corresponds to the effective length of the pipe, thus eliminating the need for considering the length of a joint. For the length of a shaft, the effective length of the pipe and the width of the machine can be only considered. That results in more space efficiency, a small size, a small starting shaft required and profitable work.
    • 5. 发明专利
    • UNDERGROUND PROPELLING DEVICE AND UNDERGROUND PROPELLING METHOD
    • JPH0941875A
    • 1997-02-10
    • JP19875395
    • 1995-08-03
    • NITTO KOJI KK
    • ISHIKAWA SHUICHI
    • E21D9/06E21D9/08
    • PROBLEM TO BE SOLVED: To conduct the accurate and efficient propelling work with small propelling force without inflicting scars on the inner face of a buried pipe. SOLUTION: A leading pipe 2 is advanced to an arrival shaft from a starting shaft by a propelling machine in the starting shaft. The tip of the leading pipe 2 is fixed to the arrival shaft, and the rear end is separated from the propelling machine. An excavating body 4 larger in diameter than a buried pipe 3 and an inner pipe 20 connected to the excavating body 4 are rotated and advanced while being outwardly inserted to the leading pipe 2. The buried pipe 3 is outwardly inserted to the inner pipe 20 and advanced. The sediment excavated by the excavating body 4 is conveyed into the starting shaft located in the opposite direction to the advancing direction by a spiral 21 in the inner pipe 20. The spiral 21 is kept in no contact with the inner peripheral face of the buried pipe 3, and no scar is inflicted on the inner face of the buried pipe 3. Since the leading pipe 2 is not advanced, small propelling force is sufficient. Even when the buried pipe 3 is advanced and the portion of the leading pipe 2 located in the front of the buried pipe 3 becomes short, the supporting force of the fixed leading pipe 2 is not reduced, and the arrival accuracy of the buried pipe 3 is high. The work is efficiently conducted only in the starting shaft when the buried pipe 3 is advanced.
    • 8. 发明专利
    • UNDERGROUND PROPULSION DEVICE AND UNDERGROUND PROPULSION METHOD
    • JPH10196277A
    • 1998-07-28
    • JP473697
    • 1997-01-14
    • NITTO KOJI KK
    • ISHIKAWA SHUICHI
    • E21D9/06E21D9/08
    • PROBLEM TO BE SOLVED: To shorten a construction period by making a start shaft and an arrival shaft small-scaled, reducing the number of assigned workers, improving safety and increasing daily progress in a method of towing a pipe to bury it in the ground. SOLUTION: A guide pipe 20 is driven forward from a start shaft 2 to an arrival shaft 3 by a propulsion machine 5. In the arrival shaft 3, a head part 25 and a buried pipe 4 are insert-fitted to the periphery of the guide pipe 20, and a locking member 26 is fitted to the end part of the guide pipe 20. A pipe pressing plate 35 is fitted to the rear end of the buried pipe 4. The locking member 26 is protruded from a through hole 37 of the pipe pressing plate 35. The guide pipe 20 is towed by the propulsion machine 5 to press the head part 25 and the buried pipe 4 into the ground. The guide pipe 20 is driven forward by the propulsion machine 5 to protrude the locking member 26 further outside of the pipe pressing plate 35 to lock again. Reciprocating motion of the guide pipe 20 is repeated to tow the buried pipe toward the start shaft 2.