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1. 发明专利

JPH04366080A EXISTING PIPE EXCHANGING METHOD WITHOUT OPEN EXCAVATING AND ITS DEVICE 失效
公开(公告)号：JPH04366080A
公开(公告)日：1992-12-17
申请号：JP16610791
申请日：1991-06-12
申请人： NIPPON STEEL CORP , NIPPON KOKAN KK
发明人： KUNIOKA MAKOTO , SHIMA HIROSHI , INAMI RYUICHI , FUJISAKI YASUISA , KAWAGUCHI SHUSAKU , NAKAJIMA YOSHIKAZU , NEMOTO MINORU , WATANABE MASAAKI , TAKEUCHI TAKASHI
IPC分类号： E02F5/10 , E21D9/06 , F16L1/024
摘要： PURPOSE:To improve work efficiency in exchanging an obsolete existing pipe such as a cast-iron pipe for a new pipe without open excavating by inserting a joint cutting device in the existing pipe and cutting the joint over a predetermined length in the axial direction removing it and then, inserting a new pipe with a propelling device. CONSTITUTION:In exchanging work, a joint cutting device 10 which is movable in an existing pipe 1 is inserted into the pipe, the joint 2 of the existing pipe 1 is cut at a plurality of points by a vertical cutter 16 and a horizontal cutter 15 over a predetermined length in the axial direction, and front and rear of the joint 2 in the cut length in the axial direction is cut by a circumferential cutter 13. Next, a cut piece of the joint is recovered in the cut piece container by a cut piece recovering device 20, and then, the ground on the outer circumferential side of a general part of the cut existing pipe 1A from which the joint 2 was removed is excavated by an excavating pipe 33. After that, a new pipe 5 is connected to the rear of the excavating pipe 33 and both the pipes 5 and 33 and propelled for a predetermined distance by a propelling device 8, and then, the general part of the cut existing pipe 1A is made to pass the new pipe 5 with held by a holding clamp to be removed.

2. 发明专利

JPH0598890A GUIDANCE TUBE FOR RENEWING OLD PIPE 失效
公开(公告)号：JPH0598890A
公开(公告)日：1993-04-20
申请号：JP21012991
申请日：1991-07-26
申请人： NIPPON KOKAN KK , NIPPON STEEL CORP
发明人： NEMOTO MINORU , HONMA HIROSHI , NAKAJIMA YOSHIKAZU , WATANABE MASAAKI , KUNIOKA MAKOTO , ONO TOSHITAKA , TAKEUCHI TAKASHI , KAKIZAKI MINORU
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To provide a guidance tube for renewing an old pipe by which the old pipe is not broken. CONSTITUTION:After the projected part 2 of a guidance tube 1, a part of whose fore end part 1a has been projected, has been positioned above, a coupling part 6 is broken. Then, the guidance tube 1 is turned by 180 deg., and the direction of the guidance tube 1 is corrected, so that the axial direction of the guidance tube 1 is brought near to parallel with that of a cast-iron pipe 51. By positioning the projected part 2 in a lower position, the distance l2 between the lower end 51b of the sectional surface 51a of the cast-iron pipe 51 and the point 3a where the end surface 2a of the projected part 2 of the guidance tube 1 is brought into contact with the cast-iron pipe 51 becomes longer. Since the distance l2 is long, even if the end part 1a of the guidance tube 1 being driven forward is brought into contact with the outside surface of the cast-iron pipe 51, the cracking of the cast-iron pipe 51 is hardly caused.

3. 发明专利

JP2538453B2 失效
公开(公告)号：JP2538453B2
公开(公告)日：1996-09-25
申请号：JP21012991
申请日：1991-07-26
申请人： NIPPON KOKAN KK , SHINNIPPON SEITETSU KK
发明人： NEMOTO MINORU , PPONMA HIROSHI , NAKAJIMA YOSHIKAZU , WATANABE MASAAKI , KUNIOKA MAKOTO , ONO TOSHITAKA , TAKEUCHI TAKASHI , KAKIZAKI MINORU
IPC分类号： E21D9/06 , F16L1/024

4. 发明专利

JPH06299790A PIPE BODY CONSTRUCTION IN TUNNEL 失效
公开(公告)号：JPH06299790A
公开(公告)日：1994-10-25
申请号：JP10721293
申请日：1993-04-12
申请人： NIPPON STEEL CORP
发明人： YANAGIMOTO HAYAO , SUZUKI KENJI , TAKEUCHI TAKASHI
IPC分类号： E21D11/00 , E21D19/00
摘要： PURPOSE:To reduce the thicknesses of a repairing pipe body in a decrepit tunnel and a pressure pipe body provided to the inside of a shield tunnel to promote economic efficiency. CONSTITUTION:A pipe body 2 having a section of similar figures slightly smaller than a section of the circumferential wall is so placed that it is capable of drainage and expansion and that it has the internal wall of the tunnel and a specific space 3. The space 3 remains as it is or it is filled with a filler 4 having water permeability and soft elasticity. In addition, a drain 5 is provided to the bottom of the inside of the tunnel and is connected to the space 3.

5. 发明专利

JPH03187402A RADIATOR FOR EXTINGUISHING SNOW 失效
公开(公告)号：JPH03187402A
公开(公告)日：1991-08-15
申请号：JP32546889
申请日：1989-12-15
申请人： NIPPON TETSUDO KENSETSU KODAN , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： FUJISAKI TADASHI , SAKAI MASAKATSU , SUEHIRO SHOICHI , TAKEUCHI TAKASHI , FUKUSHIMA SHUJI , NIBU HITOSHI
IPC分类号： E01H5/10 , E01B19/00 , E01C11/26 , F28D1/03
摘要： PURPOSE:To enable service water to be circulatedly used without providing a dust-removing tank or a settling tank by circulating hot water in wide shallow flow passages formed both by a thin flat plate whose upper surface is made to be a heat-radiating surface and by a corrugated thin plate provided under the flat plate. CONSTITUTION:To the undersurface of a thin flat plate 13 whose upper surface is made to be heat-radiating surface, a corrugated thin plate 14 having continuous recessed parts consisting both of a plurality of rows of wide shallow recessed parts and of wide shallow recessed parts connecting the adjacent rows of the above recessed parts is joined. At both ends of the wide narrow flow passages 11 formed both by the continuous recessed parts of the corrugated thin plate 14 and by the flat plate 13, piping connecting ports are provided. And by circulating hot water or the like in the inside of these flow passages 11, snow on the flat plate is heated through indirect contact, and is melted.

6. 发明专利

JP2003225951A REINFORCED PLASTIC PIPE 审中-公开
公开(公告)号：JP2003225951A
公开(公告)日：2003-08-12
申请号：JP2002027418
申请日：2002-02-04
申请人： NIPPON STEEL CORP , HITACHI METALS LTD , NIPPON STEEL COMPOSITE CO LTD
发明人： TAKEUCHI TAKASHI , GUNJI SHIGERU , ARAKAWA TAKASHI , OKAWA DAIICHI , AOYANAGI SHIGEAKI , TADOKORO HIROYUKI , WATANABE NOBUYUKI , ARAKI SATORU , TAKEDA TOSHIKAZU , IMAMURA SHINJI
IPC分类号： F16L9/12 , B29C63/14 , B29C70/16 , B29K105/08 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To provide a reinforced plastic pipe which is obtained by highly effectively reinforcing a plastic pipe using a reinforcing material of a reinforcing fiber and shows superb lightweight properties, high pressure resistance and high strength. SOLUTION: The reinforcing material of a reinforcing fiber 10 obtained by impregnating a continuous tape- or sheet-shaped reinforcing fiber with a resin, is densely wound at 50° COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2000096868A BASE ISOLATION DEVICE SUITED TO SUPER LIGHT LOAD CONDITION 失效
公开(公告)号：JP2000096868A
公开(公告)日：2000-04-04
申请号：JP28587898
申请日：1998-09-24
申请人： NIPPON STEEL CORP , MUTSUBISHI RUBBER KK
发明人： TAKEUCHI TAKASHI , KAWAGUCHI SHUSAKU , OKAWA DAIICHI , TAOMO AKIO , KITAWAKI MICHIO
IPC分类号： E04B1/36 , E04H9/02 , F16F15/02
摘要： PROBLEM TO BE SOLVED: To provide a base isolation device which can impart a long original period even in a base isolation mechanism to a relatively light structure such as a low position structure of a piping bridge or a wooden general purpose residence, where a spring constant is freely selected in X-Y directions and a fixed section is longitudinally arranged, and can realize effective base isolation against any earthquake wave. SOLUTION: A pressure board 1 formed of metallic or other rigid material is inserted between a foundation base 3 and a support base 2, and one or several rollers 5 are provided mutually perpendicularly among the pressure board 1, the foundation base 3 and the support base 2 and furnished with a function for severally horizontally moving in X-Y directions between the foundation base 3 and the support base 2.

8. 发明专利

JPH1061867A LINE DISPOSED BY USING POLYETHYLENE PIPE AS JOINT FOR STEEL PIPE 失效
公开(公告)号：JPH1061867A
公开(公告)日：1998-03-06
申请号：JP23995396
申请日：1996-08-23
申请人： NIPPON STEEL CORP
发明人： ARAKAWA TAKASHI , TAKEUCHI TAKASHI , HASEGAWA HISASHI
IPC分类号： F16L47/02 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To entirely eliminate a need for welding and outer surface coating at a junction part of outer surface polyethylene-coated steel pipes being a constituting unit of a line when a line is disposed at a site, to have excellent water cut-off ability, and to maintain a function as a line following deformation of the line due to displacement of a ground due to an earthquake or subsidence of a ground. SOLUTION: A line is formed such that outer polyethylene-coating steel pipes 2 having one end with which a polyethylene pipe serving as a joint 3 is formed integrally are arranged adjacently to form a line. The end faces 7 of the joints 3 being the polyethylene pipes being the end parts of the outer surface polyethylene-coating steel pipes 2 are thermally fused and joined with each other. The length of the polyethylene pipe is set to a value enough to follow in conformity to deformation of the line due to deformation of a ground occurring during an earthquake.

9. 发明专利

JPH09328989A CATCHMENT PIPE EMBEDDING METHOD 失效
公开(公告)号：JPH09328989A
公开(公告)日：1997-12-22
申请号：JP14715296
申请日：1996-06-10
申请人： NIPPON STEEL CORP , NICHIA STEEL WORKS
发明人： TATSUHARA TAKESHI , GUNJI SHIGERU , TAKEUCHI TAKASHI , ETSUNO YUJI
IPC分类号： E21D9/06
摘要： PROBLEM TO BE SOLVED: To allow catchment without requiring a number of catchment pipes to prevent the liquefaction of a sand ground. SOLUTION: A pilot pipe 12 is curvedly driven from a departure into a ground until its end arrives at a destination and a drill pipe 13 capped on the outside of the pilot pipe 12 is driven until its end arrives at the destination or the departure. A catchment pipe formed by winding a small pitch of wire rod on the outer periphery of a core material cylindrically arranged at a space is connected to the end of the drill pipe 13, the drill pipe 13 is pulled to the departure or the destination to draw the catchment pipe 1 into the ground and then the pilot pipe 12 is extracted.

10. 发明专利

JPH0979447A WELDLESS STEEL PIPE JOINT EMPLOYING EXPANSIVE MORTAR 失效
公开(公告)号：JPH0979447A
公开(公告)日：1997-03-25
申请号：JP25571695
申请日：1995-09-08
申请人： NIPPON STEEL CORP
发明人： KAKIZAKI MINORU , TAKEUCHI TAKASHI , IDEMITSU TAKASHI , FUKUZAKI TETSUKAZU
IPC分类号： F16L21/02
摘要： PROBLEM TO BE SOLVED: To provide the weldless pipe joint employing expansive mortar, which facilitates works for a steel pipe joint, is excellent in execution efficiency, is reliable in water cut-off properties, and is furthermore high in joint strength. SOLUTION: This invention is concerned with the weldless steel pipe joint employing mortar where a cut-off member 3 is provided for the end parts of steel pipes 1 and 1 which are mutually adjacent with their pipe ends faced to each other, the steel pipes 1 and 1 are covered by a cylindrical outer pipe 2 which covers the outer circumferences of the joint parts of the steel pipes 1 and 1, is provided with flange parts 4 at both the inner sides of it, an air vent hole 5 at its upper part, and with an injection hole 6 at its lower part, and can be divided in the circumferential direction, cut-off members 7 are interposed between each flange part 4 and the outer pipe 2, and expansive mortar 10 which is so blended that expansive pressure is developed as specified, is filled in the inside of a joint space 9 formed between the outer pipe 2 and each steel pipe 1 and 1. Besides, the aforesaid joint also represents the weldless steel pipe joint employing expansive mortar, in which ribs are welded over the outer circumferences of the steel pipes 1 and 1 in the inside of the joint space 9.

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