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1. 发明专利

JPH06210484A METHOD AND JIG FOR RADIOGRAPHIC-TESTING WELDED PART OF TUBE CIRCUMFERENCE 失效
公开(公告)号：JPH06210484A
公开(公告)日：1994-08-02
申请号：JP384893
申请日：1993-01-13
申请人： TOKYO GAS CO LTD , TOKYO RIGAKU KENSA KK , KAWASAKI STEEL CO
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO , ARAI YUTAKA , FUJIMOTO TOMOYA
IPC分类号： B23K31/00 , G03B37/00 , G03B42/02
摘要： PURPOSE:To provide a radiographic testing method for a welded part of a tube circumference and a radiographic testing jig by which a clear radiography can be obtained over the total range of a welded part with a simple operation and the quality of the welded part can accurately be judged whether it is normal or defective. CONSTITUTION:A radiographic inspection jig 10 provided with a cylindrical body 12 freely inserting into two pieces of tubes 42, 44, and two annular X-ray shielding plates 14, 16 attached by separating a definite interval on an outer circumferential surface of this cylindrical body 12 are prepared, radiation films 26a-26d are arranged to be mutually opposed to the welded part 40 and the radiography of this welded part 40 is photographed thereafter, the radiation films 24a-24d are arranged to be mutually opposed to the welded part 40, and the radiography of the welded part 40 is photographed from the position different from the position where the radiation films 26a-26d are photographed.

2. 发明公开

EP0639690A4 DOUBLE WALL PIPE FOR PROPULSION TECHNIQUE AND CONSTRUCTION OF PIPE END OF LEADING PIPE. 失效
标题翻译：双壁的钻井和性能管口腔件。
公开(公告)号：EP0639690A4
公开(公告)日：1997-04-09
申请号：EP93919654
申请日：1993-09-13
申请人： KAWASAKI STEEL CO , TOKYO GAS CO LTD
发明人： FUJIMOTO TOMOYA , OKAMURA KENKO , MORISHITA SHIGERU , MURAKAMI MASARU , ADACHI AKIRA , HAYASHI MITSUTOSHI , FUJITA AKINARI , NAGASHIMA SHINGO , KURASHINA MINORU , YOSHIDA KENTARO
IPC分类号： E21B7/20 , E21B17/00 , E21D9/00 , F16L39/00 , E21D9/06
CPC分类号： E21B7/20 , E21B17/00 , E21D9/005 , F16L39/00
摘要： According to the present invention, a double wall pipe for propulsion, which is constructed such that an inner pipe and an outer pipe are relatively movable with each other in the longitudinal direction, is provided and a propulsive force is acted only on the outer pipe. With this arrangement, this double wall pipe for propulsion can be laid under the ground without damaging the rear end surface of the inner pipe and without generating an internal stress in the inner pipe, thereby achieving the laying being high in the reliability, in which pinholes, cracks and the like can be prevented from occurring in the inner pipe during the use.

3. 发明专利

JPH06257383A DOUBLE PROPULSIVE PIPE TO BE BURIED 失效
公开(公告)号：JPH06257383A
公开(公告)日：1994-09-13
申请号：JP4486093
申请日：1993-03-05
申请人： KAWASAKI STEEL CO , TOKYO GAS CO LTD
发明人： FUJIMOTO TOMOYA , OKAMURA NORIMITSU , ADACHI AKIRA , MURAKAMI MASARU , HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO
IPC分类号： E21D9/06 , F16L9/18 , F16L21/02
摘要： PURPOSE:To prevent invasion of underground water by providing a groove winding in the circumferential direction the outer circumference of a ring member which is projected from the outer steel pipe of a double propulsive pipe to be buried and inserted into another outer steel pipe, and fitting an O-ring in the groove. CONSTITUTION:A ring member 8 is provided on the extreme end of an outer steel pipe 2, the projected part of the ring member 8 is formed with a flat part 8c and a taper part 8b, the flat part 8c is provided with a groove 8a winding in the circumferential direction the outer circumference of the ring member 8, and a rubber ring 9 is fitted therein. Next the attached piping 4' of a double propulsive pipe to be buried 1' and the attached piping 4 of a double propulsive pipe 1 to be buried are connected together, the outer steel pipe 2 is propelled so as to insert the ring member 8 into the outer steel pipe 2'. Next propulsive force is further applied on the outer steel pipe 2, the double propulsive pipe 1 is propelled into the underground, similar processes to the propulsion are repeated, and a plurality of double propulsive pipes to be buried are propelled in order. Concrete or the like is filled the gap of the inner steel pipe 3 and the outer steel pipe 2 from one end of the attached piping 4 so as to fix both, and the connecting part is sealed with a rubber ring 9.

4. 发明专利

JPH0742493A BACK-FILLING DEVICE OF EMBEDDED DOUBLE-TUBE 失效
公开(公告)号：JPH0742493A
公开(公告)日：1995-02-10
申请号：JP19121493
申请日：1993-08-02
申请人： KAWASAKI STEEL CO , TOKYO GAS CO LTD
发明人： HAYASHI MITSUTOSHI , KURASHINA MINORU , NAGASHIMA SHINGO , FUJIMOTO TOMOYA , OKAMURA NORIMITSU , ADACHI AKIRA , MURAKAMI MASARU
IPC分类号： E21D9/06 , E21D11/00
摘要： PURPOSE:To reduce the diameter of a pipe, by providing a delivery pipe having elastic closing rings at both sides of a delivery hole and inserting or pulling out the delivery pipe to open or close a slide shutter, in a grout pipe having a discharge hole feeding a back-filling material. CONSTITUTION:A delivery pipe 1 is shifted by winding up a wire 5 to the rear side of thrusting direction and elastic closing rings 1b thereof are arranged at the position where the feeding hole 3a of a grout pipe 3 is put between the rings 1b. A slide shutter 7 is slid to the right by the elastic closing ring 1b in accordance with the shifting movement. Then feeding hole 3a is opened and concrete is delivered from a delivery hole 1a through a connection pipe 13 to reach an outflow hole of an external pipe from the feeding hole 3a of grout pipe 3 through a connection pipe 11. And further, the concrete flows from the outflow hole to cover the circumference of an embedded double tube for back-filling of the tube. When winding up the wire 5 further, the delivery pipe 1 is moved to the right and arranged at the position corresponding to another connection pipe 11. Again concrete is delivered for back-filling of the embedded double-tube at another position.

5. 发明专利

JPH05321580A DRIVING DOUBLE STEEL PIPE 失效
公开(公告)号：JPH05321580A
公开(公告)日：1993-12-07
申请号：JP18391892
申请日：1992-07-10
申请人： TOKYO GAS CO LTD , KAWASAKI STEEL CO
发明人： YOSHIDA KENTARO , HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO , ADACHI AKIRA , FUJIMOTO TOMOYA , MORISHITA SHIGERU
IPC分类号： E21D9/06
摘要： PURPOSE:To connect driving double steel pipes to each other in the ground and to prevent internal pipes from cracking to promote execution efficiency having high reliability by providing a cushion material layer between an intermediate material of the peripheral surface of an internal pipe and an external pipe, and mutually coming into contact with external pipes. CONSTITUTION:A projected driving double steel pipe 1' is provided to a vertical shaft, a new double steel pipe 1 is provided to the rear end thereof, and the ends of internal pipes 2 are welded to each other. After that, a welding section is coated with a polyethylene tube, grout hoses inserted into lead-covered pipes buried in concretes 4 are connected to each other. At that time, a cushion material layer of polystyrene resin 8 is provided between an intermediate material covering the peripheral surface of each of the internal pipes 2 and each of the external pipes 3. Then, the external pipes are slid, and position slippage or size error is absorbed by the cushion material to contact the external pipes accurately with each other. Successively, the steel pipes 1' and 1 are driven forward in the ground, cement milk is filled between the internal pipes 2 and the external pipes 3. According to this constitution, the cement milk is discharged to the outside of the external pipe 3 together with water and earth to strengthen buried pipes, and the settlement of the ground surface can be prevented.

6. 发明专利

JPH05346095A 失效
公开(公告)号：JPH05346095A
公开(公告)日：1993-12-27
申请号：JP15497292
申请日：1992-06-15
申请人： TOKYO GAS CO LTD , KAWASAKI STEEL CO
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO , FUJIMOTO TOMOYA
IPC分类号： E21D9/06 , F16L21/02
摘要： PURPOSE:To prevent the damage of a pipe by providing a double steel pipe having an inner pipe slidably held in an outer pipe through intermediate material, and applying thrust to the outer pipe and intermediate material for propulsion while connecting the end parts in succession. CONSTITUTION:The rear end face of the inner pipe 2' of a propulsion double steel pipe 1' already propelled so as to have its rear end protruded into a shaft is welded to the front end face of the inner pipe 2 of a new propulsion double steel pipe 1. Segments 10 are fitted to a recessed part formed by the outer peripheral surface of the inner pipes 2, 2' and the side faces of concrete 4, 4' as intermediate material. The outer plates of the segments 10 are then welded to the outer pipes 3, 3', and the outer plates of the adjacent segments 10 are mutually welded. Propulsion hydraulic jacks 22 are then set to the rear end of the pipe 1 through a push ring 21, and thrust is applied to the outer pipe and the intermediate material for propulsion. Since thrust is thus applied only to the outer pipe and intermediate material, the collapse of the inner pipe end face and the internal stress of the inner pipe can be prevented, and also the buckling of the outer pipe is prevented. The reliability of pipe burying work can be also improved.

7. 发明专利

JPH05346094A 失效
公开(公告)号：JPH05346094A
公开(公告)日：1993-12-27
申请号：JP15497192
申请日：1992-06-15
申请人： TOKYO GAS CO LTD , KAWASAKI STEEL CO
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO , FUJIMOTO TOMOYA
IPC分类号： E21D9/06 , F16L21/02
摘要： PURPOSE:To prevent the damage of a pipe by providing a double pipe having an inner pipe slidably held in an outer pipe through a ring member, and applying thrust to the outer pipe while connecting the end parts successively for propulsion, and after propulsion, filling grout to the outer periphery of the connecting parts. CONSTITUTION:The rear end face of the inner pipe 2' of a propulsion double steel pipe 1' already propelled so as to have its rear end protruded into a shaft is welded to the front end face of the inner pipe 2 of a new propulsion double steel pipe 1, and then grout hoses 6, 6' are connected thereto. Segments 10 are fitted to the connecting part outer periphery of the inner pipes 2, 2', and the boundaries 10d to outer pipes 3, 3' and also the mutual segments 10 are welded. Propulsion hydraulic jacks 22 are set to the rear end of the pipe 1 through a push ring 21, and thrust is applied to the pipe 3 for propulsion. After the propulsion and accommodation, cement milk is filled into a space between the ring members 4, 4' of the connecting part while pulling out the hoses 6, 6'. Since thrust is thus applied only to the outer pipe, the collapse of the inner pipe end face and the internal stress of the inner pipe can be prevented, and the buckling of the outer pipe can be prevented. The pipe can be also solidified with fill.

8. 发明专利

JPH0742485A PIPE END STRUCTURE OF GUIDE PIPE 失效
公开(公告)号：JPH0742485A
公开(公告)日：1995-02-10
申请号：JP19121293
申请日：1993-08-02
申请人： KAWASAKI STEEL CO , TOKYO GAS CO LTD
发明人： HAYASHI MITSUTOSHI , KURASHINA MINORU , NAGASHIMA SHINGO , ADACHI AKIRA , MURAKAMI MASARU , FUJIMOTO TOMOYA , OKAMURA NORIMITSU
IPC分类号： E21D9/06 , F16L1/024 , F16L9/18
摘要： PURPOSE:To facilitate welding of mutual pipe ends, by fixing an insertion joint positioning the exterior pipe of a double-tube at the rear end and welding an adapter pipe containing inside a positioning stopper for the main pipe of double- tube with a dummy pipe. CONSTITUTION:After a dummy pipe 1 has been thrusted into the ground, an adapter pipe 4 is welded at the rear end of dummy pipe. The insert joint 4a of the adapter pipe 4 is inserted in the inside of the exterior pipe 3a to position the exterior pipe 38. The reinforcing rung 4b or the adapter pipe contacts the front end of the main pipe 3b via a rubber plate 4c to position the main pipe 3b and prevent the main pipe 3b from entering into the dummy pipe 1. Next, the double-tube 3 is pushed from a shaft 2 and after it has reached another shaft 2, the dummy pipe 1 and the adapter pipe 4 are removed from the double- tube 3. The reinforcing ring 45 prevents the adapter pipe 4 from buckling and decides the position of the main pipe 3b and serves as a stopper to fix the main pipe besides.

9. 发明专利

JPH06272479A DOUBLE PROPULSION PIPE FOR BURYING 失效
公开(公告)号：JPH06272479A
公开(公告)日：1994-09-27
申请号：JP6659893
申请日：1993-03-25
申请人： KAWASAKI STEEL CO , TOKYO GAS CO LTD
发明人： FUJIMOTO TOMOYA , ADACHI AKIRA , MURAKAMI MASARU , HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO
IPC分类号： E21D9/06 , E21D11/00 , F16L9/18
摘要： PURPOSE:To prevent the rupture of a backing pipe by providing a part of the backing pipe with a flexible connecting pipe, and fitting check valves to both ends of the backing pipe so as to allow the unidirectional outflow of back- filling material to the outside from the inside. CONSTITUTION:First check valves 5, 5' and a second check valve 6 are connected by first and second backing pipes 7, 7', 9 and at least partially by a flexible connecting pipe 8. Accordingly, even if relative rotation is generated between outer steel pipes 2, 2' and inner steel pipes 3, 3', this rotation is absorbed by the connecting pipe 8 so as to prevent the rupture of the backing pipes 7, 7', 9. The second check valve 6 is provided between the second backing pipe 9 and filling pipes 4, 4' so as to prevent concrete in the second backing pipe 9 from returning to the filling pipe 4. The filling pipes for filling concrete between the outer steel pipes 2, 2' and inner steel pipes 3, 3' can be used also for backing.

10. 发明专利

JPH0989159A PIPE LINE LAYING METHOD, TIMBERING METHOD, AND TIMBERING ASSEMBLING BODY 失效
公开(公告)号：JPH0989159A
公开(公告)日：1997-03-31
申请号：JP24471095
申请日：1995-09-22
申请人： KAWASAKI STEEL CO , KAWATETSU TECHNO CONSTR KK , TOKYO GAS CO LTD
发明人： HAYASHI MITSUTOSHI , MIYAMOTO YUKINOBU , NAGASHIMA SHINGO , DAIKUHARA TAKESHI , MASUDA TOSHIICHI , MIYOSHI ISAMU , ADACHI AKIRA , KATAYAMA MOTOJI , MUTOU KOUSHIROU
IPC分类号： B66C13/08 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To enable a pipe for laying to be easily arranged in a trench by feeding the pipe in the longitudinal direction of the pipe while suspending the pipe by a chain roller, and by lowering the pipe in the burying trench. SOLUTION: After rollers 40 are installed and portal cranes 50 in which chain rollers 60 are suspended are installed, a pipe 1 is placed on the rollers 40 by using the cranes, a wire 3 whose one end is connected to the pipe 1 is pulled by using a monkey winch 4, and the pipe 1 is moved while being supported by the chain rollers 60. The pipe 1 is moved until the whole pipe 1 is supported by the chain rollers 60, and the pipe 1 is lowered in a trench 10. Therefore, the pipe 1 can be arranged in the trench 10 without many man- hours that a strut is detached and again set like in the conventional method.

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