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21. 发明专利

JPH02252529A METHOD FOR INTERNAL PARTIAL REPAIR OF PIPELINE 失效
公开(公告)号：JPH02252529A
公开(公告)日：1990-10-11
申请号：JP7449489
申请日：1989-03-27
申请人： TOKYO GAS CO LTD , ASHIMORI IND CO LTD
发明人： FUJITA AKITAKA , KONDO MASAKATSU , IMOTO TAKAYOSHI , SAKURAGI HIROYUKI
IPC分类号： B29C63/30 , B29C63/34 , B29C73/02 , B29K101/10 , B29K105/08
摘要： PURPOSE:To provide a highly stiff repairing layer and perform a speedy reparing operation by a method wherein a repairing sheet so curved that ends thereof overlap with each other is inserted to a repairing location in a pipeline to be repaired, the diameter of the curved repairing sheet is enlarged by applying a pressure to the inside thereof, thereby bringing the sheet into close contact with the inner surface of the pipeline, and the repairing sheet is hardened by heating. CONSTITUTION:A repairing sheet 16 is preliminarily wound around a repairing device, with ends of the sheet set overlapping with each other. When it is confirmed that the repairing device is inserted to a location where a pinhole 13 is generated, the insertion of the device is stopped. A fluid pressure is supplied to the inside of an expandable film 4 through a fluid pressure conduit 7 and a pouring port 6, thereby expanding the film 4. The repairing sheet 16 fitted around the expandable film 4 has the overlapping parts 17 gradually moved relative to each other, accompanied by a gradual increase in the diameter of the wound sheet 16, until the sheet 16 makes close contact with the inner surface of a pipeline 12 at the location of the pinhole 13. A rubber heater 8 is supplied with electric power from a power supply device through electric wires 9 to generate heat. The sheet 16 is heated through the expandable film 6 located on the outside of the heater 8, and is hardened in a short time.

22. 发明专利

JPS6451283A VACUUM SUCKER 失效
公开(公告)号：JPS6451283A
公开(公告)日：1989-02-27
申请号：JP20635687
申请日：1987-08-21
申请人： HITACHI LTD , TOKYO GAS CO LTD
发明人： SONODA SHINJI , WATABIKI MASAYUKI , IOBE YOSHISHIGE , SAKUMA YASUJI , SAKAMOTO KIYOSHI , TSUGE MUNENORI , FUJITA AKITAKA
IPC分类号： B25J15/06
摘要： PURPOSE: To make a suction pad follow the shape of a surface with large level differences to be sucked and surely suck it by arranging a support guide having flexibility in the sucking direction of the suction pad, in the circumferential direction of the ring suction pad. CONSTITUTION: A bellows type flexible guide 4 which is freely expanded/ contracted only in the sucking direction of a suction pad 3 and has a drag of some extent to a side force is attached to the internal circumferential face of the suction pad 3 provided in the outer circumferential end in the suction surface side of a suction plate 1. When this suction pad 3 sucks a surface with large level differences to be sucked, the suction pad 3 follows and surely sucks the surface to be sucked by the expansion/contraction performance of the flexible guide 4.

23. 发明专利

JPS6451282A METHOD OF CONTROLLING SUCTION OF VACUUM PAD 失效
公开(公告)号：JPS6451282A
公开(公告)日：1989-02-27
申请号：JP20635587
申请日：1987-08-21
申请人： HITACHI LTD , TOKYO GAS CO LTD
发明人： SONODA SHINJI , WATABIKI MASAYUKI , IOBE YOSHISHIGE , SAKAMOTO KIYOSHI , YAMASHITA MAKOTO , FUJITA AKITAKA , TSUGE MUNENORI
IPC分类号： B25J15/06
摘要： PURPOSE: To suck and detach without transmitting a reaction to a support part in suction or detaching a vacuum pad by constituting it in such a state as controlling the pressure of operating fluid, at least, into two stages. CONSTITUTION: A change-over valve 11' feeds high pressure P fluid to a terminal feeding hole 7 through a feeding hole 15 via a change-over valve 11. In this case, the suction pad 5' is drawn to a support rod 1. Secondly, the whole support part 3 is made to approach to the wall surface 6 to a prescribed distance so as to apply the vacuum. Then, when the feeding hole of the change-over valve 11 is shifted to 8, the vacuum pad 5' is pushed toward the wall surface 6 so as to start suction in such a position as bringing the vacuum pad 5' in contact with the wall surface. In this case, the pad 5' is pushed from the back so that as long as the reaction to the support part 3 is moving, it is not generated. Thirdly, when the suction and the contraction of the vacuum pad 5' is completed, the change-over valve 11 is shifted, and when the pressure in the support rod guide part inside is set to the atmospheric pressure, the vacuum is turned off, the feeding hole of the change-over valve 11 is returned to 15, and the reaction to the support part 3 is set to zero so that the pad 5' is detached therefrom.

24. 发明专利

JPS6451281A WALL SURFACE FOLLOWER OF WALKING TYPE ROBOT 失效
公开(公告)号：JPS6451281A
公开(公告)日：1989-02-27
申请号：JP20635487
申请日：1987-08-21
申请人： HITACHI LTD , TOKYO GAS CO LTD
发明人： SONODA SHINJI , WATABIKI MASAYUKI , IOBE YOSHISHIGE , SATO CHIKARA , SAKAMOTO KIYOSHI , TSUGE MUNENORI , FUJITA AKITAKA
IPC分类号： B25J5/00
摘要： PURPOSE: To stably travel a frame along a wall surface by providing a slidable guide element to one frame along an arc guide which is provided in the other frame and by constituting the frame center faced to the center of the curved wall surface. CONSTITUTION: An adsorption element 13 of one frame 1 is adsorbed to a sphere of a prescribed curvature or an R surface 16 and the absorption element 13 of the other frame 2 is detached from the surface 16. An actuator 12 is driven in this state, the frame 2 detached from the absorption element is moved by the relative movement of the drive mechanism 3 of one frame and the drive support part 5 of the other frame. This operation is repeated in the each frame alternately so that the frames 1, 2 are traveled and moved along the surface 16. In this case, though the frame 2 becomes to be inclined to the frame 1, it is followedly rotated by the free rotation of a pin 9 and a roller guide element 10 of the frame 2 is moved along the arc guide 4 of the frame 1. As a result, the center of the frame can be held in such a state as being faced to the center of the curvature of the surface 6 at all times.

25. 发明专利

JPS61117450A Ultrasonic inspecting device for cracking defect detection 失效
标题翻译：用于破裂缺陷检测的超声波检查装置
公开(公告)号：JPS61117450A
公开(公告)日：1986-06-04
申请号：JP23842784
申请日：1984-11-14
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , Tokyo Gas Co Ltd
发明人： KUBOTA JUN , SASAKI SOJI , WATABIKI MASAYUKI , KOSHIRAE MITSUO , FUJITA AKITAKA , OKADA MAMORU , SHIMIZU SHINICHI
IPC分类号： G01N29/04 , G01N29/06 , G01N29/07 , G01N29/11 , G01N29/38 , G01N29/42 , G01N29/44
CPC分类号： G01N29/4445 , G01N29/0618 , G01N29/07 , G01N29/11 , G01N29/38 , G01N29/42 , G01N2291/02854 , G01N2291/044 , G01N2291/2675
摘要： PURPOSE:To detect a directional defect and discriminate between a shape echo and a defect echo by providing a converter so that an ultrasonic wave is transmitted to and received from a part to be inspected simultaneously and also independently. CONSTITUTION:Transmitted pulses generated by a pulser 51 are supplied to one of converters 31-34 selectively by a multiplexer (MPX) 52 and sent as an ultrasonic wave to the part 43 to be inspected. One of echoes that the converters 31-34 receive from a defect, etc., is selected by the MPX 53 and amplified by a receiver 54 on a frequency selective basis. Then, a gate 55 selects only a signal of time when the signal from the part 43 to be inspected is expected to arrive with time. Then, a defective echo discriminating device 8 calculates the position of a reflection source for the echo from a beam route, amplitude data, data on a flaw detection direction, etc., and stores it together with the respective data to discriminate the defect and decide on its direction. Therefore, the defect is detected speedily and securely.
摘要翻译：目的：通过提供转换器来检测方向性缺陷并区分形状回波和缺陷回波，使得超声波同时且独立地被传输到要被检查的部件并被接收。构成：由脉冲发生器51产生的发送脉冲由多路复用器（MPX）52选择性地提供给转换器31-34之一并作为超声波发送到待检查的部分43。转换器31-34从缺陷等接收的回波之一由MPX 53选择，并由频率选择性地由接收器54放大。然后，门55仅选择来自待检查部分43的信号随时间到达的时间信号。然后，缺陷回波识别装置8计算来自波束路径的回波的反射源的位置，振幅数据，探伤方向上的数据等，并将其与各个数据一起存储以区分缺陷并决定在它的方向。因此，可以快速，安全地检测缺陷。

26. 发明专利

JPH08243791A GAP SPACER OF AUTOMATIC WELDING MACHINE 失效
公开(公告)号：JPH08243791A
公开(公告)日：1996-09-24
申请号：JP4956895
申请日：1995-03-09
申请人： TOKYO GAS CO LTD
发明人： FUJITA AKITAKA , MAKI YUUICHI , MIZUKAMI SEIJI
IPC分类号： B23K37/04 , B23K37/053
摘要： PURPOSE: To provide an automatic welding machine gap spacer in which the error is not generated on a root gap, a high welding quality can be kept, and farther more, the adjusting working can be executed easily, the working effi ciency is improved, and the number of persons required to adjust the gap can be reduced. CONSTITUTION: This gap spacer 1 is a L shaped member composed of a gap setting part 1a and a holding part 1b. A root gap is set with the thickness a of the gap setting part 1a, and the gap spacer 1 is attached and held to one side of an object body to be welded with a magnet 13 buried in the holding part. Further, a metal sheet 12 is inserted in a groove 11 installed on the gap setting part 1a, so the gap spacer 1 can be detached easily be pulling out the metal sheet 12 from the groove 11 after the gap is set.

27. 发明专利

JPH07159145A RADIOGRAPHIC INSPECTION FOR PIPE CIRCUMFERENTIAL WELDED PART AND INSPECTION DEVICE THEREFOR 失效
公开(公告)号：JPH07159145A
公开(公告)日：1995-06-23
申请号：JP30788093
申请日：1993-12-08
申请人： TOKYO GAS CO LTD
发明人： FUJITA AKITAKA , NAGASHIMA SHINGO
IPC分类号： G01B15/00 , B23K31/00
摘要： PURPOSE:To provide a radiographic inspection method for a pipe circumferential welded part in which the radiographic inspection for the pipe circumferential welded part of a pipe can be carried out instantly and automatically, and the whole processes of an execution can be carried out speedily, and to provide an inspection device. CONSTITUTION:A circumferential inspection device 5 is constituted of a driving part 51 and a radiation sensor part 52, and the circumferential inspection device 5 is turned on the circumference of a pipe 1 by the motive power of the driving part 51. A radiation source is installed in the pipe 1, and the radiations 44 such as X-rays radiated over the whole periphery in the radial direction toward the circumferential welded part 12 of the pipe 1 are received by the radiation sensor part 52, and the circumferential welded part 12 is made to emit light by using a fluorescent screen 53. Further, a transmission image is converted into the image signal by an image processing circuit 6, and displayed on a monitor TV 61.

28. 发明专利

JPH06288183A EXCAVATOR 失效
公开(公告)号：JPH06288183A
公开(公告)日：1994-10-11
申请号：JP9503593
申请日：1993-03-31
申请人： TOKYO GAS CO LTD , ISEKI TORY TECH INC
发明人： HAYASHI MITSUTOSHI , FUJITA AKITAKA , NAGASHIMA SHINGO , AKESAKA TOSHIO , IYAMA MAKOTO
IPC分类号： E21D9/06 , E21D9/08 , E21D9/093 , E21D9/12
摘要： PURPOSE:To prevent the collapse of a working face and facilitate the direction change of an excavator by exerting the earth retaining effect of the working face when excavating the ground having a high gravel ratio and a small quantity of fine grains and easy to collapse. CONSTITUTION:Multiple spokes 11 are provided at the tip of a conical rotor 10 provided at the tip of a main body 1, and face plates 12 having the prescribed tilt angle theta against the axis 7a of a cutter 7 are selectively provided between the spokes 11. A working face B is earth-retained by the face plates 12 to prevent its collapse. When loosening occurs on the working face B, the resistance of the loosened portion differs from the resistance of the portion facing the loosened portion. The downward force is applied to an excavator A due to the thrust applied to the excavator A and the vertical movement of the face plates 12 caused by the eccentric rotation of the cutter 7, the floating is prevented, and the direction change of the excavator A is facilitated.

29. 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.

30. 发明专利

JPH06257390A PRIME PUSHER DEVICE IN PROPULSIVE CONSTRUCTION METHOD FOR DOUBLE TUBE 失效
公开(公告)号：JPH06257390A
公开(公告)日：1994-09-13
申请号：JP6594693
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： E21D9/06
摘要： PURPOSE:To conform the posture of a double tube to be newly propelled to a double tube already propelled so as to surely weld them together, when the double tube already propelled is dislocated or inclined against the planned line of a duct. CONSTITUTION:Supporting members 15 (18, 22) movable and fixable in the crossing direction against a planned line are provided on a prime pusher device B (C, D) which propels a double tube A to be newly propelled. The double tube A is placed on the supporting members 15, and the axis of the placed double tube A is conformed to the axis of a double tube A already propelled by adjusting the positions of the supporting members 15 against a frame 11 and the distance between the supporting members 15 according to the dislocation and the inclination against the planned line of the already propelled double tube A. Hereby, the tube ends of the inner tubes 1 can be brought in contact with each other without generating any gap.

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