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21. 发明专利

JPH06240994A DRAWING METHOD OF IMPERMEABLE FILM FROM STORAGE PIPE AND DEVICE THEREOF 失效
公开(公告)号：JPH06240994A
公开(公告)日：1994-08-30
申请号：JP4745893
申请日：1993-02-12
申请人： TOKYO GAS CO LTD , OKUMURA CORP
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO , MISHIMA KIYOUSUKE , WADA HIROSHI
IPC分类号： E21D9/06 , E21D11/38
摘要： PURPOSE:To make an underground pipe coverable by drawing a tubular impermeable film out of a storage room to be installed in the rear of a shield machine in the point midway in propulsive embedding of the underground pipe in a jacking method. CONSTITUTION:An elastic expansive body 7 being expandible or contractible to or from the digging ground is installed in a neighboring part in the rear of an outlet 5 of a tubular impermeable film storage pipe 2 installed in the rear of a shield machine 1 free of longitudinal movements. In the case where an inpermeable film 3 to be drawn out of the storage pipe 2 during propulsion is broken down, or in the case where necessity is caused to draw the impermeable film 3 out of the storage pipe anew, this impermeable film 3 is pressed to the ground by way of expansion of the elastic expansive body 7. In this state intact, the impermeable film 3 is drawn out of the storage pipe 2 according to the propulsion of an underground pipe.

22. 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.

23. 发明专利

JPH05302496A 失效
公开(公告)号：JPH05302496A
公开(公告)日：1993-11-16
申请号：JP10942592
申请日：1992-04-28
申请人： TOKYO GAS CO LTD
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO
IPC分类号： E21D9/13 , E21D9/06 , F16L1/024 , G01N23/18
摘要： PURPOSE:To enable the X-ray examination of the welded parts of a main pipe that has been welded inside a starting shaft to be easily carried out from the outside by providing a space between the adjacent outer pipes in the piping material of a small-diameter double structure. CONSTITUTION:A filling material layer 21 is formed on the outside of main pipes 20 whose both ends have been beveled, and a water-feeding pipe 22 and a mud-water pipe 23 are penetrated through the filling material layer 21. On the outside of the filling material layer 21, outer pipes 24 whose length between both ends is shorter than the main pipe 20 and that is formed so as to be concentric with the main pipe 20 are provided for constituting a piping material of a small-diameter double structure. After the main pipes 20 have been welded to each other in the inside of a starting shaft and subjected to the X-ray examination from the space formed between adjacent outer pipes 24, the water-feeding pipes 22 and mud-water pipes 23 are connected by means of connecting pipes 16 respectively. A sliding working layer may be interposed between the filling material layer 21 and the outer pipe 24.

24. 发明专利

JPH0575859B2 失效
公开(公告)号：JPH0575859B2
公开(公告)日：1993-10-21
申请号：JP3309585
申请日：1985-02-20
申请人： TOKYO GAS CO LTD , HAKKO CO
发明人： HAYASHI MITSUTOSHI , SAITO ISAO , IKE NOBUKATSU
IPC分类号： E03F7/00

25. 发明专利

JPS6157284A Method of inserting wire into pipe 失效
公开(公告)号：JPS6157284A
公开(公告)日：1986-03-24
申请号：JP17909684
申请日：1984-08-28
申请人： Tokyo Gas Co Ltd
发明人： HAYASHI MITSUTOSHI , SAITO ISAO
IPC分类号： B08B9/04 , F16L55/00 , H02G1/08

26. 发明专利

JPS60139993A LEAD-OUT SYSTEM OF RESIN FOR REPAIR AND PIG IN CASE OF REPAIR EXECUTION OF EXISTING PIPE 失效
公开(公告)号：JPS60139993A
公开(公告)日：1985-07-24
申请号：JP24662483
申请日：1983-12-28
申请人： TOKYO GAS CO LTD , HAKKO CO
发明人： HAYASHI MITSUTOSHI , SAITOU ISAO , IKE NOBUKATSU , OOSAWA TOSHIHIKO
IPC分类号： F16L55/16 , B05D7/22 , F16L55/10

27. 发明专利

JPS60139361A RESIN CONVEYING PIG FOR REPAIRING PIPE JOINT PART OF EXISTING PIPE 失效
公开(公告)号：JPS60139361A
公开(公告)日：1985-07-24
申请号：JP24662983
申请日：1983-12-28
申请人： TOKYO GAS CO LTD , HAKKO CO
发明人： MORINAGA AKIO , SAITOU ISAO , NAKAGAWA TOSHIO , IKE NOBUKATSU , OOTSUKA HISAO , HAYASHI MITSUTOSHI
IPC分类号： B05C7/08
摘要： PURPOSE:To secure replacement action and to perform the certain repairing of a pipe joint part, by parallelly providing a resin filling groove and a resin replacing groove in a phase shifted state and mounting a member for preventing groove deformation to the replacing groove. CONSTITUTION:Resin introducing grooves 17 and resin replacing grooves 18 are alternately provided to the left and right peripheral wall positions of a pig 3 in parallel in a phase shifted state and a shape holding member, which is made of a metal or hard synthetic resin having a channel shaped cross-sectional area and has large notches 43a formed at both corners thereof, is formed in the replacing groove 18. By this structure, no influence is exerted on the replacing groove even if filling pressure is applied to the resin filling groove and the expansion of the groove is generated while the opening width of the replacing groove is held to a predetermined one and the repairing of a pipe joint part is made accurate.

28. 发明专利

JPS60139360A RESIN CONVEYING PIG FOR REPAIRING PIPE JOINT PART OF EXISTING PIPE 失效
公开(公告)号：JPS60139360A
公开(公告)日：1985-07-24
申请号：JP24662883
申请日：1983-12-28
申请人： TOKYO GAS CO LTD , HAKKO CO
发明人： HAYASHI MITSUTOSHI , SAITOU ISAO , IKE NOBUKATSU , NAKAGAWA TOSHIO
IPC分类号： B05C7/08 , F16L55/16 , F16L55/18
摘要： PURPOSE:To safely move a pig even if a connection part is broken, by using a relatively hard rubbery material as the core material of the central part of the pig and connecting a leading end barrel piece and a mian body barrel piece in such a state that an embedded plate is interposed between both barrel pieces. CONSTITUTION:Pigs 2, 3 are formed of flexible rubbery material and each of them is divided into a plural pieces such as a leading end barrel piece 32 and a main body barrel piece 23 while an embedded plate 39 is interposed between the leading end barrel piece 32 and the main body barrel piece 34 to connect both of them in a columnar shape and a traction cable 4 is secured to the embedded plate 39 and the outer peripheral part of the main body barrel piece is constituted of a soft material and the central part is constituted of a hard material. By this structure, even when the securing and connection with the traction cable are broken in the intermediate part of the pig, the pig is compressed by friction resistance with the inner wall and the abrupt increase of friction resistance is prevented and the pig is safely taken out to the outside.

29. 发明专利

JPS60139359A RESIN CONVEYING PIG FOR REPAIRING PIPE JOINT PART OF EXISTING PIPE 失效
公开(公告)号：JPS60139359A
公开(公告)日：1985-07-24
申请号：JP24662783
申请日：1983-12-28
申请人： TOKYO GAS CO LTD , HAKKO CO
发明人： MORINAGA AKIO , HAYASHI MITSUTOSHI , IKE NOBUKATSU , NAKAGAWA TOSHIO
IPC分类号： B05C7/08 , F16L55/16 , F16L55/18
摘要： PURPOSE:To smooth the inflow of a resin and to perform perfect sealing, by providing a resin filling groove and a resin replacing groove so as to shift a phase in the circumferential direction of a pig peripheral surface and making the replacing groove longer than the supply one. CONSTITUTION:Resin introducing grooves 17 are formed to a rear side pig 3 so as to be positioned at left and right parts of the outer periphery of the pig 3 while a resin replacing grooves 18 are formed to the upper and lower parts of the outer periphery of the pig 3 so as to shift the positions thereof. The grooves 18 are longer than the resin introducing grooves 17 in a longitudinal direction to open the replacing grooves 18. By this mechanism, the filling of a resin can be directly performed while the pulling-off of the resin is well and, therefore, perfect sealing property can be secured.

30. 发明专利

JPH09196233A STEEL PIPE PULLING-IN METHOD 失效
公开(公告)号：JPH09196233A
公开(公告)日：1997-07-29
申请号：JP599696
申请日：1996-01-17
申请人： TOKYO GAS CO LTD , ISEKI TORY TECH INC
发明人： HAYASHI MITSUTOSHI , MIYAMOTO YUKINOBU , DAIKUHARA TAKESHI , NARA KENSUKE , FUJIMORI ISAO
IPC分类号： F16L1/024
摘要： PROBLEM TO BE SOLVED: To pull in a steel pipe over a long distance which is conventionally impossible by a propelling machine alone by effectively utilizing a road setting type propelling machine. SOLUTION: A starting bored hole 1 is provided in one side of a pipe laying path, a destination bored hole 2 is provided in the other side, a road setting type propelling machine 3 having a guide drill unit 31 is installed on the round of the starting bored hole side 1 and a returning device 5 having a propelling jack is installed in the destination bored hole 2. In first step, a drill head is attached to the tip of a rotary rod 4 delivered from the road setting type propelling machine 3, advanced into the ground while rotating the drill head and boring hole is drilled up to the destination bored hole. In second step, the drill head is removed in the destination bored hole 2, instead by serially connecting an expanded hole rimer 6 coincided with a buried pipe diameter and a steel pipe 7 to be pulled in to the end part of the rod 4, the rod 4 is returned by a pulling-in force from the front by the propelling machine 3, and by simultaneously adding a pushing-in force from the rear side by the returning device 5 to the rear end part of the steel pipe 7 to be pulled in, the steel pipe is pulled in.

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