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1. 发明专利

JPH0755060A NEW PIPE LEADING DEVICE FOR REPLACING BURIED PIPE WITHOUT OPEN-CUT AND RELAYING 失效
公开(公告)号：JPH0755060A
公开(公告)日：1995-03-03
申请号：JP19942993
申请日：1993-08-11
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , ODAWARA TAKURO , WAKI TOSHIO , NOMURA NAOYA
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To miniaturize a propulsion device and to change a roller and a rib. CONSTITUTION:A new tube leading device 7 is constituted by installing a guide roller 11, a breaking cutting roller 12, a diameter expansion roller 14 and a maintenance rib 15 on a main body 10 by bolts, and by breaking a buried tube 4 and expanding its diameter by the rollers, reducing pushing force by way of pushing and burying a new tube 6 while maintaining the buried tube 4 in its diameter expanded state and loosening the bolts, each of the rollers and the rib can be changed.

2. 发明专利

JPH0754585A NEW TUBE LEADING DEVICE FOR REPLACING BURIED TUBE WITHOUT CUTTING AND COVERING 失效
公开(公告)号：JPH0754585A
公开(公告)日：1995-02-28
申请号：JP19938993
申请日：1993-08-11
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , ODAWARA TAKURO , WAKI TOSHIO , NOMURA NAOYA , TANAKA YOSHIMASA
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To replace a buried tube using a small propulsive force without any need of a cutting and covering work by pushing a device body for expanding a breaking and diameter expanding blade externally with a diameter expansion roller, and then cutting the tube into circular pieces in order. CONSTITUTION:A movable body 13 is made to travel on the operation of a cylinder 11 mounted on the body 10 of a new tube leading device 7 connected to the end of a new tube 6. Then, a plurality of breaking and diameter expanding blades 15 and 15 radially jointed to the movable body 13 in such state as free to expand and contract are expanded externally with a diameter expansion roller 18 by pushing the body 10, thereby cutting a buried tube 4 into circular pieces. This new tube leading device 7 is employed as a guide to sequentially push new tubes 6 having a diameter larger than or equal to a buried tube diameter into the buried tube 4 for the sequential break thereof, and the new tubes 6 are buried in order.

3. 发明专利

JPH0734778A NEW PIPE GUIDING DEVICE FOR REPLACING EXISTING BURIED PIPE WITHOUT PERFORMING EXCAVATION 失效
公开(公告)号：JPH0734778A
公开(公告)日：1995-02-03
申请号：JP18109293
申请日：1993-07-22
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： WAKI TOSHIO , SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , NOMURA NAOTA , AKAGI HIDEAKI
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To smoothly drive and bury a new pipe by cutting open an existing buried pipe to expand the diameter thereof thereby advancing the new pipe through the buried pipe using small driving forces. CONSTITUTION:A guide roller 24 is attached to a leading edge of small diameter 20a of a guiding pipe 20 and a breaking, cutting roller 25 is mounted to the tapered intermediate portion 20b of the pipe 20 and a diameter-expanding roller 26 is provided on the rear end portion of large diameter 20c of the pipe 20, whereby the guide roller 24 allows a new pipe 15 to smoothly pass through an existing buried pipe 4 and the buried pipe is cut open by the roller 25 so that the buried pipe is expanded radially outwardly of the new pipe 15 by means of the roller 26, thereby smoothly driving and burying the new pipe 15.

4. 发明专利

JPH0755059A NEW PIPE LEADING DEVICE FOR REPLACING BURIED PIPE WITHOUT OPEN-CUT AND RELAYING 失效
公开(公告)号：JPH0755059A
公开(公告)日：1995-03-03
申请号：JP19942193
申请日：1993-08-11
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , ODAWARA TAKURO , WAKI TOSHIO , NOMURA NAOYA , YOSHIDA YASUHIRO
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To miniaturize a propulsion device by way of reducing propulsion force of the propulsion device by making outer diameter of a guide part almost the same as the inner diameter of a buried pipe, making a broken opened part in a slightly larger diameter than the inner diameter of the previously buried pipe and making an expanded diameter part in the same diameter as the outer diameter of a new pipe. CONSTITUTION:A leading pipe 20 consists of a small diameter head end part 21, a tapered intermediate part 22 and a large diameter rear end part 23, on the small diameter head end part 21, guide rollers 24 are installed radially in a plural number and become a guide part, on the tapered intermediate part 22, breaking opening rollers 25 are radially installed in a plural number and become a broken and opened part, and on the large diameter rear end part 23, diameter expansion rollers 26 are radially installed in a plural number and become an expanded diameter part. Consequently, the previously buried tube 4 is expanded in diameter by the diameter expansion rollers 26 after it is broken and opened by the breaking opening rollers 25, the inner diameter of an diametrically expanded part 4a becomes the same as the outer diameter of a new pipe 6, and as a difference of diameters of the preciously buried pipe 4 and the diameter expanded part 4a, that is, an expanded diameter flap becomes small and pressing force required for diameter expnasion becomes small, it is possible to miniaturize a propulsion device by way of reducing propulsion force.

5. 发明专利

JPH0755058A CONSTRUCTION METHOD FOR REPLACING BURIED PIPE WITHOUT OPEN-CUT AND RELAYING 失效
公开(公告)号：JPH0755058A
公开(公告)日：1995-03-03
申请号：JP19941693
申请日：1993-08-11
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , ODAWARA TAKURO , WAKI TOSHIO , NOMURA NAOYA , ONISHI TADASHI
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To replace a buried pipe such as an underground-buried water pipe with a new tube without open cutting by propelling and burying the new tube while expanding the diameter of the previously buried tube by way of gradually pushing a diameter expansion device into the broken previously buried tube with a push bar as a guide. CONSTITUTION:At positions separated from both end parts and others of a road 1 by specified distances, a starting shaft 2 and an arriving shaft 3 are excavated, and to these starting shaft 2 and arriving shaft 3, a previously buried tube 4 is made to face. On the starting shaft 2, a propulsion device 5 is provided, and by pushing a breaking opening device 6 into the previously buried tube by this propulsion device 5, the previously buried tube 4 is broken. The propulsion device 5 is constituted of a jack 7 and a presser plate 8, and by the presser plate 8, the braking cutting device 6 is pushed into the previously buried tube 4 through a push bar 9. Consequently, though cracks are made in a plural number of circular arc pieces on the previously buried tube 4, as a broken and opened part 14 is larger than the inner diameter of the previously buried tube 4 and smaller than the outer diameter, the broken previously buried tube 4 returns to its original outer diameter, fragments neither fall nor are scattered underground.

6. 发明专利

JPH0755057A CONSTRUCTION METHOD FOR REPLACING BURIED PIPE WITHOUT OPEN-CUT AND RELAYING AND NEW PIPE LEADING DEVICE USED THEREFOR 失效
公开(公告)号：JPH0755057A
公开(公告)日：1995-03-03
申请号：JP19939393
申请日：1993-08-11
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , ODAWARA TAKURO , WAKI TOSHIO , NOMURA NAOYA , SHIMIZU HIROSHI
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To replace a buried pipe such as an underground buried water pipe with a new pipe to lay without open-cut by breaking the buried pipe by a new pipe leading device by way of pushing the new pipe leading device into the buried tube by a specified stroke, thereafter, burying the new tube by way of propelling it by a specified stroke and repeating this action. CONSTITUTION:A propulsion device 5 is constituted of a jack 20 and a presser plate 21. A main body 10 is inserted into a previously buried tube 4 by way of arranging a new tube leading device 6 in a starting pit 2, a cover 14 is made contact with the presser plate 21 and simultaneously, an intermediate presser plate 22 is made contact with the presser plate 21. In this state, by propelling the new pipe leading device 6 by way of pushing it through the presser plate 21 and the intermediate presser plate 22 by the jack 20 while breaking the buried pipe 4 and expanding its diameter, a new tube inserting space 23 is constituted underground by the cover 14 and the presser plate 21 is returned to its original position. Thereafter, in the starting pit 2, a new pipe 7 is put, and by pushing the new tube 7 by the presser plate 21, the new tube 7 is propelled into the cover 14. By repeating such an action, the new tube 7 is gradually propelled and buried.

7. 发明专利

JPH0842287A EXISTING BURIED PIPE NON-EXCAVATION REPLACEMENT METHOD 失效
公开(公告)号：JPH0842287A
公开(公告)日：1996-02-13
申请号：JP17412794
申请日：1994-07-26
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： WAKI TOSHIO , SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , ODAWARA TAKURO , NOMURA NAOTA
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To prevent the coming out of small broken pieces by making a plurality of longitudinal grooves on the internal circumference of the existing buried pipe and a circumferential groove on the internal circumference near a flange section, guiding a new pipe with a new pipe guide device to drive, and breaking the existing pipe in a long strip shape. CONSTITUTION:A plasma cutting machine is inserted into the existing buried pipe 13, and the plasma cutting machine is moved in the direction of extension inside the existing pipe 13 while generating plasma from a plasma generator to the front end of a torch. At the same time, the torch is revolved to make a plurality of grooves 19 and 20 in the longitudinal or circumferential direction of the existing pipe so that it is easily broken and cut. At that time, the longitudinal grooves 19 are made on a plurality of circumferential positions of the existing buried pipe 13 and, at the same time, the circumferential groove 20 is made on a straight pipe section 18 adjacent to a flange section 17 to connect the grooves 19 and 20 are to each other. After that, the plasma cutting machine and generator are removed, a new pipe is guided with a new pipe guide device 23 and is driven, and a diameter of the existing pipe 13 is enlarged while breaking and cutting the existing pipe, and the new pipe is successively driven and is buried. According to the constitution, the existing pipe 13 is broken into long strip shaped pieces 13a, and the coming out of small broken pieces, damage in the new pipe and the decline of driving force can be prevented.

8. 发明专利

JPH07127761A REPLACEMENT METHOD AND DIAMETER INCREASING DEVICE FOR UNDERGROUND EXISTING PIPE 失效
公开(公告)号：JPH07127761A
公开(公告)日：1995-05-16
申请号：JP14525293
申请日：1993-06-16
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： NEGAMI YOSHIAKI , SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , ODAWARA TAKURO , WAKI TOSHIO , TANAKA YOSHIMASA , NOMURA NAOYA
IPC分类号： F16L1/024
摘要： PURPOSE:To increase the size of an existing pipe without affecting a ground surface when the existing pipe is replaced with a new one by increasing the diameter of the existing underground pipe and inserting the new pipe into it, and charge filling material into clearances between the existing pipe and the new pipe without affecting the new pipe at all. CONSTITUTION:Lower half part grooves 5a are formed in the inner surface of the lower half part of an existing pipe, and upper half part grooves 5b shallow than the lower half part grooves 5a are formed in the inner surface of the upper half part of it in longitudinal direction of it. Also a diameter increasing block with a dia. increasing part to increase the dia. of pipe gradually from the linear upper end to the bottom is propelled in the existing pipe to break the lower half part groove 5a parts. By this, the lower half part of the existing pipe is deformed to increase dia. preferentially to the others. Then a new pipe is inserted into the existing pipe and, finally, filling material 7 is charged into clearances between the existing pipe and the new pipe.

9. 发明专利

JPH0783355A EXISTING BURIED PIPE NONOPEN-CUT RE-LAYING PLASMA CUTTER 失效
公开(公告)号：JPH0783355A
公开(公告)日：1995-03-28
申请号：JP8427194
申请日：1994-04-22
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： WAKI TOSHIO , ODAWARA TAKURO , SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , NOMURA NAOTA , TAKIGUCHI MOTOHISA , KONDO KAZUO
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To attain forming a slit in the lengthwise direction in an existing buried pipe of different diameter and further a slit in the circumferential direction in an arbitrary position of the existing buried pipe. CONSTITUTION:A strut 33 is provided in a frame 20 of a self runnable running carriage 26, a mounting plate 34 is vertically movably provided in this strut 33, a rotary horizontal shaft 38 is mounted to this mounting plate 34, an enxtending/contracting arm 43 is mounted to this rotary horizontal shaft 38, a torch guide 47 and a plasma torch 54 are mounted to a movable arm 45 of this extending/contracting arm 43, and the rotary horizontal shaft 38 is rotated to agree with the center of an existing buried pipe 3, so that a direction of the plasma torch 54 can be changed.

10. 发明专利

JPH0734779A DRIVING DEVICE FOR REPLACING EXISTING BURIED PIPE WITHOUT PERFORMING EXCAVATION 失效
公开(公告)号：JPH0734779A
公开(公告)日：1995-02-03
申请号：JP18110993
申请日：1993-07-22
申请人： SHIMIZU CONSTRUCTION CO LTD , KOMATSU MFG CO LTD
发明人： WAKI TOSHIO , SHIMIZU YOSHIHIKO , KIKUCHI YUICHI , OKUBO KENJI , NOMURA NAOTA , AKAGI HIDEAKI
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To drive and bury a new pipe having a length approximately equal to that of a starting shaft. CONSTITUTION:A pushing plate 21 with a new pipe pushing part 27 is movably provided in a starting shaft 2. Jacks 26 are positioned on the opposite sides of the part 27 of the plate 21, wherein the part 27 is located nearer to a vertical face 2b on the side opposite to driving direction than the jacks 26, so that when the pushing plate 21 is positioned at a retracted stroke end near to the vertical face 2b on the side opposite to driving direction, the distance between the part 27 and a vertical face 2a on the side of driving becomes nearly equal to the size of the starting shaft 2.

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