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1. 发明专利

JPH10300565A METHOD AND DEVICE FOR MEASURING SURFACE WAVE SOUND VELOCITY 失效
公开(公告)号：JPH10300565A
公开(公告)日：1998-11-13
申请号：JP11231397
申请日：1997-04-30
申请人： HITACHI LTD
发明人： NAGASHIMA YOSHIAKI , TAKAHASHI FUMINOBU , WATANABE ATSUSHI , KAWAMATA HIROTO
IPC分类号： G01B17/02 , G01H5/00 , G01N29/00 , G01N29/18
摘要： PROBLEM TO BE SOLVED: To measure a local surface wave sound velocity in a small region with precision, or to measure a local surface layer thickness by utilizing the surface wave sound velocity measurement. SOLUTION: When a surface wave sound velocity measurement wherein the sound velocity of a surface wave propagated in an object is measured is performed by this method, a surface wave 10 is sent continuously to an object 11. An interval between a transmission position 3 where the surface wave 10 is sent and a reception position 4 where the surface wave 10 is received is changed, and the surface wave 10 is received at each changed distance, and then its received signal 13 is added to such reference signal 14 as of frequency equal to the received signal for measuring an interference intensity. The wave length or true interference intensity is calculated from the interference intensity, and the wave length is multiplied by the frequency to obtain the sound velocity of the surface wave 10 propagating in the object 11.

2. 发明专利

JPH10153585A SURFACE LAYER EVALUATING METHOD AND APPARATUS THEREFOR 失效
公开(公告)号：JPH10153585A
公开(公告)日：1998-06-09
申请号：JP31333896
申请日：1996-11-25
申请人： HITACHI LTD
发明人： WATANABE ATSUSHI , NAGASHIMA YOSHIAKI , TAKAHASHI FUMINOBU , ODA MASASHI
IPC分类号： G01N29/44 , G01N29/22
摘要： PROBLEM TO BE SOLVED: To enable highly accurate diagnosis of the uniformity of a surface modified layer using ultrasonic data, by judging and evaluating the texture anisotropy of a material and the effect of the surface modified layer. SOLUTION: An ultrasonic sensor is driven by an ultrasonic wave transmitter/ receiver 5 and an amplifier 4a is used in securing of an output of an ultrasonic wave. A specimen 2 is equipped with an ultrasonic sensor couple 1 and the sensor couple 1 is rotated. The sensor couple 1 employs two sensors. The rotation of the sensor couple is performed by keeping the two sensors facing each other to transmit or receive the ultrasonic wave being propagated on a surface with a high sensitivity. It is handy to mechanically rotate the sensor couple 1, but the same effect is expected as well by electrically and mechanically operating a vibrator within the sensor 1 by transmitting the ultrasonic wave and adjusting the angle of emission. A surface modified layer is diagnosed by a surface layer evaluator 7 from an ultrasonic wave data measured. This enables judging and evaluating of the texture anisotropy of the material and the effect of the surface modified layer, thereby achieving higher reliability in the execution of surface modification.

3. 发明专利

JPH09254837A IN-PIPING WORKING DEVICE 失效
公开(公告)号：JPH09254837A
公开(公告)日：1997-09-30
申请号：JP6970396
申请日：1996-03-26
申请人： HITACHI LTD
发明人： NAKAHARA HIROTAKA , HAYATA TAKASHI , KAJIYAMA SHIGERU , TAKAHASHI FUMINOBU
IPC分类号： G01M99/00 , B08B9/02 , B25J5/00 , B61B13/10 , B62D57/024 , B65G51/04 , G21C19/02 , G01M19/00
摘要： PROBLEM TO BE SOLVED: To introduce a device main body into an intended branch pipe by providing a device main body which includes traveling, watching and work means and is capable of freely moving in a branch pipe and a transport body which includes a traveling means, stores the device main body in the interior thereof, and is capable of freely moving in a main pipe in a piping comprising a main pipe and a branch pipe. SOLUTION: A device main body 2 is stored on a transport body 6, and in such a condition, the transport body 6 inserted together with the device main body into a main pipe 10. A creeping mechanism is driven by controlling an air cylinder of traveling means 7 in front of and in rear of the transport body 6 from the outside of the piping, and the transport body 6 is moved in the main pipe 10. Subsequently, an intended branch pipe 12 is confirmed by a camera 4 provided on the device main body 2, and the creeping mechanism is stopped to fix the transport body 6 in the main pipe at the branch pipe opening part. After that, a cord 81 is delivered by a winch loaded on the transport body 6 to separate the device main body 2, and when a crawler 3 is driven, the device main body freely travels in the branch pipe 12 to conduct work. Thus, the device can conduct work while freely moving in an intended branch pipe.

4. 发明专利

JPH06242090A ELECTRONIC SCANNING ULTRASONIC INSPECTION METHOD AND EQUIPMENT THEREFOR 失效
公开(公告)号：JPH06242090A
公开(公告)日：1994-09-02
申请号：JP3199093
申请日：1993-02-22
申请人： HITACHI LTD , HITACHI CONSTRUCTION MACHINERY
发明人： KOIKE MASAHIRO , TAKESUTE YOSHINORI , TAKAHASHI FUMINOBU
IPC分类号： G01N29/26
摘要： PURPOSE:To provide an electronic scanning ultrasonic inspection equipment in which a microdefect can be detected even when the number of driving elements is constant by reducing the diameter of ultrasonic beam at a focal point. CONSTITUTION:An ideal delay time generator 10 determines a delay time corresponding to the difference of propagation distance from each element to a focal point based on input values, e.g. frequency and a target focal point F, and sets the delay times for transmitting and receiving delay time circuits 11, 12. A calculator 8 determines a focal position F0 where the diameter of ultrasonic beam increases. A comparator 6 compares the focal point F0 with an input value F and transmits/receives ultrasonic wave with an ideal delay time set for the circuits 11, 12 if F>=F0. If F

5. 发明专利

JPH0619471B2 失效
公开(公告)号：JPH0619471B2
公开(公告)日：1994-03-16
申请号：JP6501384
申请日：1984-03-30
申请人： HITACHI LTD
发明人： MICHIGUCHI YOSHIHIRO , TAKAHASHI FUMINOBU , HIRAMOTO KAZUO , NISHI MASASHI , SONODA SHINJI
IPC分类号： G01S13/88 , G01S7/41 , G01S13/02 , G01S13/89 , G01V3/12

6. 发明专利

JPH0349884A CONNECTION STRUCTURE FOR IN-PIPE MOVING ROBOT 失效
公开(公告)号：JPH0349884A
公开(公告)日：1991-03-04
申请号：JP18464889
申请日：1989-07-19
申请人： HITACHI LTD
发明人： SATO CHIKARA , TAKAHASHI FUMINOBU
IPC分类号： B62D57/024 , B25J5/00 , B61B13/10
摘要： PURPOSE:To form the articulation of an in-pipe moving robot flexible 90 deg. or more so as to insert the in-pipe moving robot from an L-shaped insertion hole by dividing the robot, which moves in the interior of a pipe, into a plurality of units classified by a function and connecting each unit with universal joints and an intermediate rod. CONSTITUTION:Two units 1, 2 in an intermediate rod are bent at a right angle. In this way, because the two units 1, 2, even when they are flexed at a right angle, are prevented from interfering with each other, a robot can be easily inserted into a pipe 9 from an L-shaped insertion hole 11. While through holes in an intermediate rod 7 and universal joints 8 are formed in size such that a cable or the like is possible to easily penetrate through the interior of the through holes. Thus, possibility of breaking the cable or the like is eliminated.

7. 发明专利

JPH0210409A GUIDE METHOD FOR MOVING BODY 失效
公开(公告)号：JPH0210409A
公开(公告)日：1990-01-16
申请号：JP16041088
申请日：1988-06-28
申请人： HITACHI LTD
发明人： NAITO SHINJI , SUZUKI MASANORI , WATABIKI MASAYUKI , TAKAHASHI FUMINOBU
IPC分类号： G05D1/02
摘要： PURPOSE:To reduce the setting work of a movement target by moving a moving body itself in accordance with the indication due to remote control to set the movement target at the time when the first movement target is not set yet. CONSTITUTION:A moving body 1 is provided with a movement target recognizing device 2, a movement controller 3, a moving mechanism 4, and a movement target setting device 5. A general controller 6 which generalizes and controls the whole of a system is provided on the outside of the moving body 1, and general work indications are given to this controller 6 from a worker 7. When an indication 8 to set a movement target is given from the worker 7 to the general controller 6, route information 9 is sent to the movement controller 3 from the general controller 6 and a movement control signal 10 is generated to run the moving body 1 along an objective route. The general controller 6 generates a movement target set signal 11 synchronously with movement of the moving body 1, and the movement target setting device 5 is operated in accordance with this signal.

8. 发明专利

JPS6420430A HARDNESS METER 失效
公开(公告)号：JPS6420430A
公开(公告)日：1989-01-24
申请号：JP17467887
申请日：1987-07-15
申请人： HITACHI LTD
发明人： TAKAHASHI FUMINOBU
IPC分类号： G01N3/52 , G01N3/00
摘要： PURPOSE:To exactly measure the hardness of a metal test in any direction, by injecting an impact ball without generating an energy loss in a guide cylinder and measuring exactly energy at the time when it rebounds. CONSTITUTION:An impact ball 1 is provided with a permanent magnet 2, and stored in a sensor case 3. On the upper end of the case 3, a solenoid 4 is installed, a coil 5 is wound and a solenoid coil is formed. A range in which the impact ball 1 flies in the case 3 is surrounded by a guide cylinder 8 of a superconductor and a container 9 of the outside of the cylinder 8, and also, a heat shield 9 of its outside. To the container 9, liquid helium is supplied from a supply hole 11, and a refrigerant is recovered from a collecting hole 12. The ball 1 is injected by an applied current to the solenoid coil, and energy of the ball 1 rebounded by the material surface is measured by a current generated in the coil 5. In such a way, the hardness of a metal test can be measured exactly in any direction.

9. 发明专利

JPS6419823A SUPERCONDUCTING SWITCH 失效
公开(公告)号：JPS6419823A
公开(公告)日：1989-01-23
申请号：JP17467787
申请日：1987-07-15
申请人： HITACHI LTD
发明人： TAKAHASHI FUMINOBU
IPC分类号： H03K17/00 , H03K17/92
摘要： PURPOSE:To reduce a resistance in an ON state and to shorten a response time by using a thin-filmlike superconductive line in a connection at the time of the ON. CONSTITUTION:Input terminals I1, I2 are connected to output terminals O1, O2 through the superconductive lines 5, 6, 7, 8, 9. Control terminals C1, C2 control the output of a laser L1 by the output of the exclusive OR E1 of the value of the terminal C1 and the value of the terminal C2 and the output of the NAND N1 of the value of the terminal C1. The output of a laser L2 is controlled by the output of the exclusive OR E2 of the values of the C1, C2 and the output of the NAND N2 of the value of the terminal C2. The outputs of the lasers L1, L2 are turned on, the lines 5, 6 and 7, 8 respectively have a resistance by radiating a laser beam, namely, a switch is turned off. Thereby, the response speed of ON-OFF can be increased to about 11 seconds by heating due to the radiation of the laser light without raising an electric resistance under the ON state.

10. 发明专利

JPS63157051A ULTRASONIC FLAW DETECTING DEVICE 失效
公开(公告)号：JPS63157051A
公开(公告)日：1988-06-30
申请号：JP30372686
申请日：1986-12-22
申请人： HITACHI LTD
发明人： TASHIRO MASAHIRO , ICHINOSE YUJI , TAKAHASHI FUMINOBU
IPC分类号： G01N29/06
摘要： PURPOSE:To obtain a flaw detection image wherein cubic effect is emphasized by converting the coordinates of flaw detection data and obtaining a flaw detection image by birds-eye viewing, and varying the number of dots for the distance from the view point in a 2nd birds-eye view direction. CONSTITUTION:Flaw detection data is inputted to a dot number arithmetic part 30 from a flaw detection data input part 10 and the view point in the 2nd birds-eye view direction is inputted from a parameter input part 20. The arithmetic part 30 calculates the maximum number of dots which can be represented as one flaw detection data on the display of a display device 50 firstly. The position of a coordinate-converted area is calculated and then the number of dots representing the flaw detection data on the display of the device 60 is found lastly. A coordinate conversion part 40 converts the coordinates of the flaw detection data to two-dimensional coordinates and outputs the data to the device 50, which displays the data in dots on the display.

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