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91. 发明专利

JPH06272484A MASTER PUSHING DEVICE IN DOUBLE PIPE PROPULSION CONSTRUCTION METHOD 失效
公开(公告)号：JPH06272484A
公开(公告)日：1994-09-27
申请号：JP8511593
申请日：1993-03-22
申请人： TOKYO GAS CO LTD , ISEKI TORY TECH INC
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , KURASHINA MINORU , IYAMA MAKOTO , UNO HIDEKI
IPC分类号： E21D9/06
摘要： PURPOSE:To secure a space for performing the work of connecting pipes, cables, and the like disposed inside an inner pipe at the time of propelling a double pipe formed of an inner pipe and an outer pipe. CONSTITUTION:The push ring 13 of a master pushing device B is provided with a hole 13b formed in such a way as to coincide with the axis of the inner pipe l of a double pipe A and to be larger than the outer diameter of the inner pipe 1 and smaller than the inner diameter of an outer pipe 2. A plate like reinforcing member 17 is rigidly fixed to the jack 12 side of the push ring 13 to secure strength. At the time of connecting a new double pipe A to the already propelled double pipe A, the push ring 13 is brought into contact with the outer pipe 2, and the end part of the inner pipe 1 is inserted through in the hole 13b. A large space 19 can be thereby secured between the push wheel 13 and a reaction receiving frame 11a, and pipe-cable connecting work can be performed making use of this space. Since the pipe end of the inner pipe 1 dies not come in contact with the push ring 13, the pipe end is prevented from being flawed so as to prevent the generation of a welding defect.

92. 发明专利

JPH06257396A PREVENTING METHOD FOR INJURY OF INNER CIRCUMFERENTIAL FACE OF MAIN TUBE IN PROPULSIVE CONSTRUCTION METHOD FOR DOUBLE TUBE 失效
公开(公告)号：JPH06257396A
公开(公告)日：1994-09-13
申请号：JP6594793
申请日：1993-03-03
申请人： TOKYO GAS CO LTD , ISEKI TORY TECH INC
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO , IYAMA MAKOTO , UNO HIDEKI
IPC分类号： E21D9/13 , E21D9/06 , E21D9/12
摘要： PURPOSE:To prevent the inner circumferential face of a main tube from being injured by means of mud feed and drain tubes going in and out in the main tube, when the main tube of a direct push propulsive double steel tube is propelled in the earth. CONSTITUTION:When a direct push propulsive double steel tube 5 is propelled with a prime pusher jack 8 and mud feed and drain tubes 10, 11 are taken in and out against the main tube 7 of the double steel tube 5, a holding member 13 consisting of a tube receiving base 13a and an elastic wheel 13b is fitted to the mud feed and drain tubes 10, 11. While running the holding member 13 in the main tube 7, the mud feed and drain tubes 10, 11 are taken in and out of the main tube 7.

93. 发明专利

JPH06257387A INJECTION METHOD FOR UNGUENT AND BACK-FILLING MATERIAL AND DEVICE THEREFOR IN PROPULSION METHOD FOR DOUBLE TUBE 失效
公开(公告)号：JPH06257387A
公开(公告)日：1994-09-13
申请号：JP6594893
申请日：1993-03-03
申请人： TOKYO GAS CO LTD , ISEKI TORY TECH INC
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO , IYAMA MAKOTO , UNO HIDEKI
IPC分类号： E02B9/06 , E02F5/10 , E21D9/06 , F16L1/038 , E02D29/10
摘要： PURPOSE:To easily insert a hose for feeding unguent and back-filling material through a through hole provided between the inner tube and the outer tube of a double tube in a short time. CONSTITUTION:A winch 9 having a wire 10 is provided on an excavator 8, and a hose 11 provided with marks on the outer circumferential face is wound around a drum 13 which is driven with a driving device 12 and arranged on the starting shaft side. At every propulsion of a double tube 1, the wire is inserted through a through hole 5 provided in the intermediate layer 4 formed between the inner tube 2 and the outer tube 3 of the tube 1, and the end part is connected to the end part (discharge port 15) of the hose. By driving the winch so as to wind up the wire, the hose is inserted through the through hole, and by confirming the mark of the hose, it reaches accurately the position opposite to a check valve 7. Thereafter, a feed device 14 is driven so as to feed unguent and back-filling material through the hose, and the unguent and the back-filling material are injected to the gap 6a against natural ground 6 through the check valve.

94. 发明专利

JPH06246712A PREVENTION OF SAGGING OF CENTRIFUGALLY MOLDED CONCRETE 失效
公开(公告)号：JPH06246712A
公开(公告)日：1994-09-06
申请号：JP3876893
申请日：1993-02-26
申请人： NIPPON KOATSU CONCRETE KK , TOKYO GAS CO LTD
发明人： ISHITANI MITSUO , HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO
IPC分类号： B28B1/20 , B28B21/30 , B28B21/92
摘要： PURPOSE:To prevent the deformation of a concrete product by forming a concrete product within a centrifugal molding drum by cast molding and sending compressed air into the air bag preliminarily inserted in the drum immediately before the rotation of the drum is stopped to expand the air bag. CONSTITUTION:Concrete 3 is formed within the form 2 of a centrifugal molding drum 1 by cast molding. Compressed air 12 is sent into the air bag 10 preliminarily inserted in the drum 1 through a hose 11 immediately before the rotation of the drum 1 is stopped to expand the air bag. The air bag 10 has support bones on the inner diameter side thereof and the cylindrical side end surfaces of the air bag 10 are reinforced. The hose 11 is equipped with the reel rotated by the rotation of the drum 1 and air pressure is set to 3-5kgf/cm . Therefore, the concrete 3 formed into a product shape by casting is prevented from deformation such as sagging by the expanded air bag 10.

95. 发明专利

JPH0694626A TRUCK TO BE DRIVEN INSIDE PIPE 失效
公开(公告)号：JPH0694626A
公开(公告)日：1994-04-08
申请号：JP26952892
申请日：1992-09-11
申请人： TOKYO GAS CO LTD , SUMITOMO METAL IND
发明人： FUJITA AKITAKA , KOBORI TAKASHI , NAKAJIMA KIMIO
IPC分类号： G01N21/88 , G01N21/954
摘要： PURPOSE:To improve a running performance further in conformity with pipings of various pipe diameters and to facilitate also pullback and the like at the time of emergency by making the pressing force of a crawler adjustable by a remote control, in a running system by the crawler. CONSTITUTION:A drive motor 31 of a driving device 30, a gear case 32 and a cylinder unit 21 of a pressing device 20 are joined linearly and thereby a truck body 2 is constructed. Crawler devices 15 disposed in a plurality of sets around this truck body 2 are joined so that they can be driven by the driving device 30, and the crawler devices 15 are joined to the truck body 2 so that they can be moved in parallel thereto by a parallel link mechanism 10. Besides, the crawler devices 15 are joined to the truck body 2 through the intermediary of an air cylinder 22 of the pressing device 20, a slider 25 and pressing links 27 and an air pressure of this air cylinder 22 is controlled by a pressing control device so that a pressing force is controlled to be variable.

96. 发明专利

JPH0650089A METHOD FOR CONTROLLING DIRECTION OF PROPULSION IN PIPE LINE PROPULSION CONSTRUCTION METHOD 失效
公开(公告)号：JPH0650089A
公开(公告)日：1994-02-22
申请号：JP20513692
申请日：1992-07-31
申请人： TOKYO GAS CO LTD
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO
IPC分类号： E21D9/06 , E21D9/093
摘要： PURPOSE:To prevent a pipe line from deviating from a planned line of propulsion. CONSTITUTION:A rear-end target plate 10 is attached to the rear end of a pipe to be propelled inside a shaft and a laser spot P is made to impinge on the target of the rear-end target plate 10 and thereby centering of a pipe is performed on a block 6 and then welding is performed and the pipe is propelled by a jack 7. Therefore, a pipe line is prevented from meandering or deviating from a planned line of propulsion.

97. 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.

98. 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.

99. 发明专利

JPH0570547B2 失效
公开(公告)号：JPH0570547B2
公开(公告)日：1993-10-05
申请号：JP8390089
申请日：1989-04-04
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , ISHIKAWAJIMA HARIMA HEAVY IND
发明人： FUJITA AKITAKA , SAKOMA TAKASHI , YAMADA ISAMU , KOJIMA TOSHIO , TANAKA AKIRA
IPC分类号： B23K37/053 , B23K9/028 , B23K31/00 , B23K37/02

100. 发明专利

JPH05131922A IN-PIPE RUNNING VEHICLE 失效
公开(公告)号：JPH05131922A
公开(公告)日：1993-05-28
申请号：JP29580291
申请日：1991-11-12
申请人： TOKYO GAS CO LTD
发明人： FUJITA AKITAKA
IPC分类号： B61B13/10 , F16L55/00 , F16L55/32
摘要： PURPOSE:To recover an in-pipe running vehicle easily and speedily by retracting drive wheels and inversely rotating auxiliary wheels when a car body is in failure to be recovered, by elevatably incorporating a drive frame in the car body, installing the drive wheels on the drive frame, and installing the auxiliary wheels on the car body. CONSTITUTION:For running a car body 1 in a tube 17, air pressure is supplied from the outer side of the tube 17 to an elevation means 12 assembled between the car body 1 and a drive frame 3 freely capable of elevation in a space 2. The dive frame 3 then protrudes down the car body 1, and drive wheels 11 connected to a drive motor 4 and a guide wheel 16 are applied to the wall of the tube 17 respectively, so the car body 1 is run. In the meanwhile, when it becomes difficult for the car body 1 to run by any trouble, the air pressure inside an air cylinder 13 in the elevation means 12 is released. The drive frame 3 then moves up by an energization force of a spring 14 to retract the drive wheels 11, while auxiliary wheels 15 are applied to the wall of the tube 17. By drawing the car body 1, therefore, the auxiliary wheels 15 are rolled, and the car body 1 can be recovered easily.

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