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1. 发明专利

JPH1194126A PIPING MATERIAL AND PIPING METHOD USING THIS PIPING MATERIAL 失效
公开(公告)号：JPH1194126A
公开(公告)日：1999-04-09
申请号：JP25460697
申请日：1997-09-19
申请人： KAWASAKI STEEL CO , TOKYO GAS CO LTD , KAWATETSU TECHNO CONSTRUCTION
发明人： MASUDA TOSHIICHI , KOIZUMI HIDEHIKO , KAGAYA FUMIO , HIGUCHI NARITO , HAYASHI MITSUTOSHI , ANAMIZU TAKASHI , DAIKUHARA TAKESHI , KAWAGUCHI TAKAHIRO , KURASHINA MINORU , FUKUSHIMA YUJI , SASAKI TARO , ADACHI AKIRA , TANIGUCHI KAZUHIKO , OMURA JIRO , NAKANISHI SHIGEAKI
IPC分类号： F16L1/00
摘要： PROBLEM TO BE SOLVED: To easily move an inner pipe at the time of jointing the inner pipe by welding by providing the inner pipe and an outer pipe for protecting the inner pipe, providing the outer surface of the inner pipe with a support member for supporting the inner pipe on its lower side, and piping the inner pipe in the state of protruding from both longitudinal ends of the outer pipe. SOLUTION: In the case of piping a gas conduit in the earth, piping material comprising an inner pipe 1 which is a gas pipe, and an outer pipe 2 for protecting the inner pipe 1 is laid in a piping ditch excavated along a piping line. In this case, the length of the inner pipe 1 is to be longer than that of the outer pipe 2, and the inner pipe 1 is provided with a ring-like support member 3 for supporting the inner pipe 1 so that the inner pipe 1 does not come in direct contact with the outer pipe 2. Filling space of a filler is therefore ensured. Adjacent inner pipes 1, 1 are welded together after edge adjustment. Cable protecting pipes 4 and inside filling pipes 5 are connected by connecting pipes 6. Back filling is performed after adjusting a connecting member 7 formed of a half-divided tubular body, from the upper and lower sides of the outer pipe 2 to connect the outer pipe 2.

2. 发明专利

JPH09195677A UNDERGROUND LAYING ENGINEERING METHOD OF STEEL PIPE 失效
公开(公告)号：JPH09195677A
公开(公告)日：1997-07-29
申请号：JP599896
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： E21B7/04 , E21D9/06 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To provide an egineering method capable of smoothly laying a steel pipe to draw in underground in a long distance. SOLUTION: A starting vertical shaft 1 is furnished on one side of a pipe laying route, an arriving vertical shaft 2 is furnished on the other side, and a road setting type propulsive machine 3 is set on the ground on the side of the starting vertical shaft 1. In a first process, a first rod with a drill head installed on its head end is made to intrude underground by propulsive force by the propulsive machine 3 and made to drill a boring hole underground from the starting vertical shaft 1 to the arriving vertical shaft 2. In a second process, a hole extending reamer 6, a dummy pipe 8 and a second rod 4' are connected to a head end part of the first rod 4 on the side of the arriving vertical shaft 2, the dummy pipe 8 is made to pass along overall length of the boring hole by drawing force from the front by the propulsive machine 3, and a state of the boring hole is grasped by checking an outer surface of the dummy pipe 8 after passing. In a third process, the aforementioned hole extending reamer 6, the aforementioned dummy pipe 8 and an laying objective steel pipe are connected in series to one end of the second rod 4' on the side of the arriving vertical shaft 2, and the steel pipe is constructed in such a way as to draw it into the boring hole by pulling back the second rod 4' by drawing force from the front by the propulsive machine 3.

3. 发明专利

JPH10184999A METHOD FOR REMOVING DECREPIT PIPE 失效
公开(公告)号：JPH10184999A
公开(公告)日：1998-07-14
申请号：JP34979296
申请日：1996-12-27
申请人： TOKYO GAS CO LTD
发明人： KOBAYASHI MASUMI , DAIKUHARA TAKESHI , ABE HIROSHI , OSADA MIHO
IPC分类号： E02B9/06 , E02F5/10 , F16L1/024 , F16L1/038
摘要： PROBLEM TO BE SOLVED: To easily remove a decrepit pipe over the total length. SOLUTION: A towing member 4 is inserted in a decrepit pipe 1 from a first pit 2 side to a second pit 3 side, a pipe breaking member 5 for breaking the decrepit pipe 1 at a plurality of parts in the circumferential direction in the pipe axial direction is connected to the end of the towing member 4 on the first pit 2 side, and fragments of the decrepit pipe 1, broken by the pipe breaking member 5 are pressed from the first pit to the second pit and removed.

4. 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.

5. 发明专利

JPH09195676A PROPULSIVE METHOD OF ROD FOR DRILLING BORING HOLE PUSHED IN BY PROPULSIVE MACHINE 失效
公开(公告)号：JPH09195676A
公开(公告)日：1997-07-29
申请号：JP599796
申请日：1996-01-17
申请人： TOKYO GAS CO LTD , ISEKI TORY TECH INC
发明人： MIYAMOTO YUKINOBU , DAIKUHARA TAKESHI , NARA KENSUKE , FUJIMORI ISAO
IPC分类号： E21D9/06 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To avoid buckling of a rod by a propulsive machine. SOLUTION: This engineering method is to furnish a starting vertical shaft 1 and an arriving vertical shaft 2 in a laying route of a piping, to intrude a rotating rod 4 delivered by a propulsive machine 3 set on the ground underground in a state of installing a drill head 5 on its head end, rotationally to propel the rod 4 under the ground of a target line to the arriving vertical shaft 2 by crossing the starting vertical shaft 1 by pushing force of the propulsive machine 3 and to drill a boring hole for drawing the piping. In this case, it is propelled in such a way as to push it under the ground reaching the arriving vertical shaft 2 in a state where sagging of the rod 4 in the starting vertical shaft 1 is restrained by inserting the rod 4 in a sheath pipe 11 by fixing and installing the sheath pipe 11 having an inside diameter to insert the rod 4 along in the inside of the starting vertical shaft 2.

6. 发明专利

JPH08303643A PIPING HOLE EXCAVATOR FOR UNDERGROUND BURIED PIPE 失效
公开(公告)号：JPH08303643A
公开(公告)日：1996-11-22
申请号：JP13574495
申请日：1995-05-10
申请人： NIPPON STEEL CORP , TOKYO GAS CO LTD
发明人： MOCHIZUKI TAKASHI , YANAGIMOTO HAYAO , SHIBATA YOSHIKI , YOSHIWAKA HIDEHIKO , HAYASHI MITSUTOSHI , MIYAMOTO YUKINOBU , NAGASHIMA SHINGO , DAIKUHARA TAKESHI
IPC分类号： E02F5/14 , E21D9/06 , F16L1/024
摘要： PURPOSE: To improve drilling workability by drilling a piping hole for burying a pipe after a narrow width groove having a length from a road surface to the depth of the buried pipe is drilled, and arranging a movable device, a drilling rig which is connected to the movable device, and a soil draining conveyor on a frame supported on the book of a heavy machinery. CONSTITUTION: At the time of burying work of an under ground buried pipe, firstly drilling is carried out till the depth of the up end of a buried pipe by a groove drilling machine such as the trench cutter of a ground surface 1 so as to form a narrow width groove 2 along a piping root. A large diameter piping hole 3 is drilled along a pipe burying track 53 by a piping hole drilling machine 23. In the drilling work, a frame 21 supported to the boom 22 of a heavy machinery 20 is positioned by expanding and contracting the stroke of a movable device (a liquid operated jack) 29 so as to set the drilling device 24 in a prescribed depth. Rotation driving of a drilling head 24a is started, and also the movable device 29 is driven, thrust is applied, and then drilling is carried out. Soil for draining is transported to the ground by a soil draining conveyor 25, and then the soil is drained on a dump car 25b and the like.

7. 发明专利

JP2004136387A Pipe cutter 有权
公开(公告)号：JP2004136387A
公开(公告)日：2004-05-13
申请号：JP2002301988
申请日：2002-10-16
申请人： Tokyo Gas Co Ltd , 東京瓦斯株式会社
发明人： DAIKUHARA TAKESHI , SHIRAIWA TAKASHI , SATAKE YUKINOBU , TANAKA ETSURO , IMANARI TAKEHITO
IPC分类号： B23D21/00 , B23D45/12
摘要： PROBLEM TO BE SOLVED: To provide a pipe cutter having a constitution for surely preventing a danger of ignition by frictional heat.
SOLUTION: This pipe cutter has a cutter body 1 for successively cutting a cutting object pipe P over the whole periphery by rotatably driving the cutter while revolving along the outer periphery of the cutting object pipe, and is characterized by having the constitutions 12 and 12' for respectively supplying cooling liquid to a cutting portion in the leading object pipe P, a blade of the cutter for cutting in this place and the cutter 6 except for this place.
COPYRIGHT: (C)2004,JPO

8. 发明专利

JPH10184995A REMOVING DEVICE FOR DECREPIT PIPE 失效
公开(公告)号：JPH10184995A
公开(公告)日：1998-07-14
申请号：JP34979496
申请日：1996-12-27
申请人： TOKYO GAS CO LTD
发明人： KOBAYASHI MASUMI , DAIKUHARA TAKESHI , ABE HIROSHI , OSADA MIHO
IPC分类号： F16L1/024
摘要： PROBLEM TO BE SOLVED: To reduce labor required to remove a decrepit pipe as well as to remove the decrepit pipe over the total length even if the tendency for increasing driving force required to remove the decrepit pipe is eliminated. SOLUTION: A removing device for a decrepit pipe is provided with a towing member 4 inserted through a decrepit pipe 1 from a first pit 2 side to a second pit 3, a pipe breaking member 5 provided with a plurality of cutters 52 having the tips connected to the towing member 4, facing a plurality of parts in the circumferential direction of the decrepit pipe 1, arranged in the axial direction of the decrepit pipe 1, and provided with blade surfaces parallel to the moving direction of the towing member 4, and a recovering member 8 so provided as to be connected to the pipe breaking member 5, and provided with a cover member 8B having such a size as to cover the end surface of the decrepit pipe 1 on its terminal end. The decrepit pipe 1 is divided in the circumferential direction into fragments in the process in which the pipe breaking member 5 is towed with the towing member 4, the recovering member 8 is towed after the pipe breaking member 5 reaches the second pit 3, and the fragments of the decrepit pipe 1 are pressed into the second pit 3.

9. 发明专利

JPH10183589A TEMPORARY FILLING STRUCTURE FOR EXCAVATED HOLE 失效
公开(公告)号：JPH10183589A
公开(公告)日：1998-07-14
申请号：JP34380796
申请日：1996-12-24
申请人： TOKYO GAS CO LTD
发明人： HASHIMOTO NAOAKI , DAIKUHARA TAKESHI
IPC分类号： E02B9/06 , E02F5/10 , F16L1/038
摘要： PROBLEM TO BE SOLVED: To provide a temporary filling structure which prevents heaving of a temporary filling material filled in an excavated hole in flooding of the excavated hole and prevents deformation of the road surface. SOLUTION: A temporary filling structure for an excavated hole is provided with an earth retaining member 3 using sheet piles which is driven along the laying direction of a buried pipe 2, one or a plurality of filling blocks 5 which are composed of resin foam, arranged in a burial hole 1 in the circumference of the buried pipe, and completely fills the burial hole, a partition plate 7 which is laterally laid above the filling blocks 5 across the top end of the earth retaining member 3, and crushed stones 9 which are spread over the top face of the partition wall and paved in the same way as the road surface. The partition plate 7 is provided with such a structure 11 as preventing the filling blocks from being heaved.

10. 发明专利

JPH09144480A METHOD OF PROPULSION CONSTRUCTION OF SYNTHETIC-RESIN PIPE 失效
公开(公告)号：JPH09144480A
公开(公告)日：1997-06-03
申请号：JP30147195
申请日：1995-11-20
申请人： TOKYO GAS CO LTD
发明人： SUZUKI SHUNSUKE , DAIKUHARA TAKESHI , NARA KENSUKE
IPC分类号： E21D9/06 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To propel a synthetic-resin pipe having flexibility into the ground without using a sheathed pipe. SOLUTION: A shield jack 20 as a main pusher is arranged in the shaft P of a departure port A while using a section between the departure port A and an arrival port (not shown) as a laying path, and one end of a polyethylene pipe 25 is pushed directly by the elongation of the jack 20 and propelled into the ground. The polyethylene pipe 25 has a conical propulsive head 26 and a reinforcing rod 23 being inserted so as to be penetrated into the pipe and having a required diameter at a front end, the front end of the reinforcing rod 23 is united with the propulsive head 26, the rear end of the rod 23 is combined with a press-fitting member 21 moved by the shield jack 20, and the polyethylene pipe 25 is pushed directly under the state, in which deflection strength to buckling is increased by the reinforcing rod 23, and propelled so as to be pushed into the ground.

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