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1. 发明专利

JPH10318478A IN-PIPELINE TRAVELING DEVICE 失效
公开(公告)号：JPH10318478A
公开(公告)日：1998-12-04
申请号：JP12446897
申请日：1997-05-14
申请人： TOKYO GAS CO LTD , CHUGOKU X RAY CO LTD
发明人： SUYAMA KIICHI , MIZUKAMI SEIJI , KAWABE SHUNEI , IMON YOSHIO
IPC分类号： F16L55/00 , F16L55/16 , F16L55/28
摘要： PROBLEM TO BE SOLVED: To smoothly travel in a bent pipe and graspe duct form by making the center axis of a travel device body always accord with that of a pipe in traveling, and simultaneously measuring the travel distance and direction of a self-propelled car itself. SOLUTION: Traveling wheels 5 to be rotated by a driving mechanism are journalled on respective other ends of two pairs of wheels supporting arms 3a, 3a' and 3b, 3b', and energized in the pipe wall surface direction by each spring of sliders 2a and 2b, and forcibly pressed to a pipe wall surface under pressure. The travel device is equipped with an angle measuring arm 10 as an angle measuring mechanism, and an angle measuring roller 11 journalled on the tip part also is always forcibly pressed to an inner wall of the pipe under pressure, and then tilting angle data are outputted from four rotary potentiometers P1, P2, P3 and P4 attached with the angle measuring arm 10. The driving mechanism is controlled so that each measured angle of a pair of opposing wheel supporting arms coincides, thereby driving the traveling wheel 4, and then the device body is always pointed in the axial direction of piping, ensuring its automatic traveling.

2. 发明专利

JPH09312837A STRUCTURE INSPECTION DEVICE 失效
公开(公告)号：JPH09312837A
公开(公告)日：1997-12-02
申请号：JP12663696
申请日：1996-05-22
申请人： KYORYO KENSA CENTER KK , CHUGOKU X RAY CO LTD
发明人： YAMAMOTO SHIZUYUKI
IPC分类号： G01M99/00 , G01N21/84 , H04N7/18 , G01M19/00
摘要： PROBLEM TO BE SOLVED: To provide the structure inspection device whose detection performance is improved with excellent operability. SOLUTION: The device is made up of an extension/contraction enable pipe 1 in which a plurality follow pipes 1a, 1b,... are connected attachablely/ detachablely, a shake stop arm 2 slidable along the surface of a structure to prevent shake of the pipe, a camera 3 and a display section 4 connected to the camera 3. The shake preventing arm 2 has a support arm in pairs with a spring gripping the pipe, and a roll 23 supported by the support arm and freely turned, a lighting fixture 5, a distance measurement sensor 6, and an air jet nozzle 7. Thus, the shake prevention arm 2 gripping the pipe is placed along the surface of the structure to extend/contract the pipe without imposing a load on a worker P, the air jet nozzle at a tip is used to blows out depositted dust of checked parts and the distance measurement sensor is used to obtain a distance X between a front face of a bridge leg 54 and a base seat 91a while lighting them with the lighting fixture and a camera is used to pick up the image without a camera-shake and the inspection state is visually confirmed by using the connected display section.

3. 发明专利

JPH09150096A METHOD AND APPARATUS FOR PAINTING INNER SURFACE OF PIPE 失效
公开(公告)号：JPH09150096A
公开(公告)日：1997-06-10
申请号：JP31437595
申请日：1995-12-01
申请人： KAWASAKI STEEL CO , CHUGOKU X RAY CO LTD
发明人： IMURA HIDETOSHI , AKITA MITSUO , TAKASHINA SATARO , FUJIWARA SHIGERU
IPC分类号： B05C7/02
摘要： PROBLEM TO BE SOLVED: To paint a peripheral welded part using solventless paint by running through a pipeline having an arranging shape containing a straight pipe and a different diameter pipe. SOLUTION: A paint bag 284 filled with paint is housed in a box-shaped internal space and a rodless cylinder piston 266 is connected to a paint extruding element 267 pressing the bag housed in the box-shaped internal space from above to squeeze out paint. The paint extruding element 267 presses the paint bag 284 from above to squeeze out paint. The extruded paint is spread over the inner surface of a pipe under pressure by a coating plate (spatula) 310.

4. 发明专利

JPH0843356A METAL PIPE FLAW SENSOR AND FLAW DETECTING METHOD 失效
公开(公告)号：JPH0843356A
公开(公告)日：1996-02-16
申请号：JP18010894
申请日：1994-08-01
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , CHUGOKU X RAY CO LTD
发明人： HOSOHARA YASUHARU , CHIBA GIICHI , KINOSHITA AKIRA , AKITA MASANORI , WASHIMI TAKASHI , KAWABE SHUNEI
IPC分类号： G01N27/90
摘要： PURPOSE:To conduct flaw detection for the inner wall of a metal pipe effectively and accurately with one time of scanning. CONSTITUTION:A metal pipe flaw detection sensor 7 is equipped with an exciting coil 8 fed with an exciting signal to generate a magnetic field due to a remote field eddy current and the first signal reception coil group 9 and the second signal reception coil group 10 to receive magnetic field generated by the exciting coil 8 and passing through the wall thickness of the metal pipe and to emit a sensing signal which are installed on the bore surface of the pipe at a specified spacing. The first reception coils 9a and second reception coils 10a are arranged zigzag, and behind them a third reception coil 11 is furnished. The coil axis of the second reception coils 10a is positioned perpendicular to the pipe axis, while the coil axis of the third reception coil 11 is positioned parallel with the pipe axis. Thereby the magnetic characteristics of the metal pipe are sensed by the third reception coil 11, and existence of flaw and eventual depth are sensed precisely by the third reception coil 10a.

5. 发明专利

JPH079991A TRAVELLING DEVICE IN PIPE 失效
公开(公告)号：JPH079991A
公开(公告)日：1995-01-13
申请号：JP14482593
申请日：1993-06-16
申请人： OSAKA GAS CO LTD , CHUGOKU X RAY CO LTD
发明人： SUEZAWA SHINYA , JO HIROYUKI , FUJIWARA SHIGERU , SHIRAISHI TOKIYOSHI , TOMOBE SHIGENOBU
IPC分类号： B61B13/10 , F16L55/18 , F16L55/26 , H02G1/08 , B62D57/024
摘要： PURPOSE:To take circumferential picture with a camera at a time without largely inclining a body by connecting a connecting truck to a drive truck traveling in a cylinder, providing front and rear wheels in positions on the three parts of the body cut circumferentially equally and connecting one or two of these wheels to the body through a fixed shaft and the remaining wheels through springs. CONSTITUTION:An in-pipe travelling device 15 connects a connecting vehicle 18 to the front by a drive truck 16 and connecting device 17. Front wheels 21a, 21b or rear wheels 22a, 22b are provided on the three circumferential parts equally divided of a round pipe 11 on the front and rear of a body 20 mounting a camera 12 of the connecting truck 18. One wheel of the wheels 21a, 22a on the same position among the front wheels 21a, 21b or rear wheels 22a, 22b is connected to the body 20 with a fixed shaft 23. The remaining wheels 21b, 22b are connected to the body 20 through springs 24a, 24b so that the body 20 can be held against the gravity received by the connecting truck 18. A motor of the drive truck 16 is operated through a cable in a cable pipe 19a.

6. 发明专利

JPH03227767A SELF-PROPELLED WORK CARRIAGE 失效
公开(公告)号：JPH03227767A
公开(公告)日：1991-10-08
申请号：JP2330590
申请日：1990-02-01
申请人： CHUGOKU X RAY CO LTD
发明人： SANEMORI TAKESHI
IPC分类号： B60B19/00 , B61B13/00
摘要： PURPOSE:To guide a self-propelled work carriage for operation without using rails, etc., by providing hourglass-shaped magnetic wheels which roll along a corner part of a steel material, and flat type magnetic wheels which roll on the surface of the steel material, parallelly interlocking with the former wheels rolling. CONSTITUTION:A self-propelled work carriage 1 used for construction work, etc., is parallelly interlocked with hourglass-shaped wheels 1A, 1B rolling along a corner part 14 of a magnetic steel material 9 and provided with flat type magnetic wheels 5A, 5B rolling on the surface of the magnetic steel material 9. Out of the wheels. the hourglass-shaped wheel 1A and the flat type wheel 5A are synchronizingly rolled by a driving part 3, while those wheels 1A. 1B, 5A, 5B and the driving part 3 are disposed on a frame 2 mounting work materials (not illustrated) thereon. The driving part 3, containing a motor, is formed so that its power may rotate each of the wheels 1A, 5A through a worm gear 4, each of worm wheels 12, 52.

7. 发明专利

JPH03220451A REMOTE FIELD VORTEX SENSOR 失效
公开(公告)号：JPH03220451A
公开(公告)日：1991-09-27
申请号：JP1568290
申请日：1990-01-25
申请人： TOKYO GAS CO LTD , CHUGOKU X RAY CO LTD
发明人： HOSOHARA YASUHARU , FUJIWARA SHIGERU
IPC分类号： G01N27/90
摘要： PURPOSE:To output a sensor signal ensuring the obtaining of a phase data stabilized against a gradual corrosion and a local corrosion by making the number of turns of a front receiving coil provided on the side of a exciting coil larger than that of a rear receiving coil. CONSTITUTION:A front receiving coil FCn near an exciting coil MC is not only so higher in signal level as compared with a rear receiving coil RCn further than the coil MC but also so greater in the number of winding circuits to obtain a differential signal vector III with a level thereof enough for a phase detection and hence, a stable phase data is obtained. Then, a gradual corrosion part covers both the coils FCn and RCn in a wide range and signal vectors of the both vary likewise. A vector VI is a gradual corrosion part difference vector owing to a differential connection, where the VI contains the gradual corrosion part, which is detected with a phase difference from the III. A local corrosion part contains the coil FCn alone in a narrow range. A vector V is a signal vector owing to a differential connection of the local corrosion part, which is detected by a phase difference between the V and III.

8. 发明专利

JPH03138562A FLAW DETECTOR FOR METALLIC MATERIAL 失效
公开(公告)号：JPH03138562A
公开(公告)日：1991-06-12
申请号：JP27671989
申请日：1989-10-24
申请人： CHUGOKU X RAY CO LTD
发明人： FUJIWARA SHIGERU
IPC分类号： G01N27/82
摘要： PURPOSE:To obtain highly accurate phase data with high noise resistance with digital processing by reading the counted value of a 2nd programmable divider in synchronism with the period of a remote field eddy current. CONSTITUTION:Reference pulses whose frequency is divided by a crystal oscillator are inputted to a phase comparator 7 and an error signal outputted by the comparator 7 is inputted to a voltage-controlled oscillator 9 to output an exciting signal to a metal sensor probe 24 consisting of an exciting coil 25 and a receiving coil 26. A programmable divider 10 divides the frequency of the output signal of the voltage-controlled oscillator 9 to output the frequency- divided signal to the phase comparator 7 and reference pulses are inputted as clock pulses to a programmable divider 15. Then a phase difference value read register 19 reads the counted value of the programmable divider 15 in synchronism with the period of the remote field eddy current. Consequently, the frequency of the exciting signal is determined by the reference pulses determined by the crystal oscillator 1 and the exciting signal of stable frequency is obtained.

9. 发明专利

JPH03120457A METHOD AND APPARATUS FOR EDDY CURRENT FLAW DETECTION OF FERROMAGNETIC METALLIC PIPE 失效
公开(公告)号：JPH03120457A
公开(公告)日：1991-05-22
申请号：JP25959889
申请日：1989-10-03
申请人： IDEMITSU ENG KK , CHUGOKU X RAY CO LTD
发明人： KIMOTO SANSHIRO , YAMAOKA SEIJI , INOUE NORIO , UMETSU KUNIAKI
IPC分类号： G01N27/90
摘要： PURPOSE:To surely detect the defects of a metallic pipe by using plural coils divided along the axial direction of the metallic pipe thereby reducing the blind zone to be generated by a baffle plate and pipe plate. CONSTITUTION:A probe 2 is first inserted into the metallic pipe 20 which is an inspecting object and while an AC current for excitation is passed to the coil 4 for excitation, the probe 2 is pulled or pushed and is moved in the metallic pipe 20. A change in the eddy current generated in the metallic pipe 20 according to the movement of the probe 2 is detected by signal detecting parts 5, 6 and the detection signal is subjected to analysis processing by 1st, 2nd circuit means 32, 33 of a flaw detector main body 30, by which the position, size, etc., of the defects are determined. The abnormal signal by, for example, a buffle plate 22 is offset by the output signals of the respective divided coils 7A, 7B, 8A, 8B. The influence of the baffle plate 22 and tube plate is, therefore, decreased and the blind zone is eliminated, by which only the defects of the metallic pipe 20 are detected.

10. 发明专利

JPH0396865A OMNIDIRECTIONAL SENSOR 失效
公开(公告)号：JPH0396865A
公开(公告)日：1991-04-22
申请号：JP23417389
申请日：1989-09-08
申请人： CHUGOKU X RAY CO LTD
发明人： OKADA TOKUJI , FUJIWARA SHIGERU , SANEMORI TAKESHI
IPC分类号： G01P15/02 , G01P15/08 , G01P15/18
摘要： PURPOSE:To execute the measurement with high accuracy by holding a bar-like electrode through an insulator in at least four pieces of small holes of an outer wall of a spherical container in which a conductive liquid or a particle-like solid is sealed inside, and measuring and calculating an electric resistance between its electrodes. CONSTITUTION:At least four small holes 5 are provided on an outer wall of a spherical container having conductivity, and in the small hole 5, a bar-like electrode 2a is inserted in the direction for looking at the center of the container 1 through an insulating electrode holding implement 3, and the inside of the container 1 is sealed with a conductive liquid or a particle-like solid 4. In this state, by a variation of the acceleration direction, the solid 4 moves in the direction reverse to the acceleration direction, therefore, electrode height at which the electrode 2a comes into contact with the solid 4 is calculated from a measured value of the potential of the electrode 2a, and the acceleration direction is derived.

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