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81. 发明专利

JPS5227173A CONSTRUCTION FOR INSTALLING MAGNET IN PREVENTIVE DEVICE OF NOISE FROM STEEL PIPES DUEING TRANSPORTATION 失效
公开(公告)号：JPS5227173A
公开(公告)日：1977-03-01
申请号：JP10294575
申请日：1975-08-27
申请人： HITACHI LTD
发明人： KANETANI TADASHI , ICHIISHI TSUNEO , ITOU SUSUMU , SATOU KATSUTOSHI
IPC分类号： B65G11/00 , B65G11/20 , B65G47/52 , B65G47/54 , B65G47/90
摘要： PURPOSE:To provide a construction which is simple and highly reliable in a preventive device of noise from steel pipes during transportation for controlling noise caused during transportation of steel pipes and so forth.

82. 发明专利

JPS51141174A STEEL PIPE TRANSFER NOISE SILENCER 失效
公开(公告)号：JPS51141174A
公开(公告)日：1976-12-04
申请号：JP6407875
申请日：1975-05-30
申请人： SUMITOMO METAL IND , HITACHI LTD
发明人： YANAGIUCHI TATSUO , NAKAMURA TAKAHIRO , INOUE YORIYUKI , BOUSHI KAZUO , YAMAGUCHI TAKASHI , FURUKAWA WATARU , KANETANI TADASHI , ITOU SUSUMU , INOUE YOSHIAKI , HAYASHI YOSHIO
IPC分类号： B65G11/00 , B65G11/20
摘要： PURPOSE:To provide a movable mechancal stopper at the extermity of the skid rail to prevent the noise caused by the collision of steel pipes during the transportation without relation to the number of accumulated steel pipes.

83. 发明专利

JPS60177907A ROLLING METHOD OF SEAMLESS PIPE 失效
公开(公告)号：JPS60177907A
公开(公告)日：1985-09-11
申请号：JP3425684
申请日：1984-02-27
申请人： HITACHI LTD
发明人： SATOU KAZUYA , MOROOKA YASUO , SASAKI SOUJI , ITOU SUSUMU
IPC分类号： B21B17/12 , B21B37/18 , B21B37/78
摘要： PURPOSE:To control accurately the wall thickness of titled pipe by providing electromagnetic-ultrasonic wall thickness gauges to the inlet and outlet sides of a rolling mill and controlling a roll opening and a plug position by said gauge of inlet side and correctingly controlling them by the gauge of outlet side. CONSTITUTION:A wall-thickness controlling-quantity arithmetic device 7 compares a set wall-thickness value tS1 with the output signal value t1 of an inlet- side wall thickness gauge 9 to output a signal corresponding to the deviation value DELTAt1 obtained by said comparison. A roll-gap control device 4 and a plug- position control device 5 control a roll opening E and a plug-3-position respectively. In the same manner, an arithmetic device 8 of wall-thickness control quantity of outlet side, outputs the deviation value DELTAt2 of the wall thickness t2 of outlet side. The devices 4 and 5 correct the roll gap E and the plug position respectively based on the signal of deviation value DELTAt2. Because of the extremely high accuracies of electromagnetic-ultrasonic type wall-thickness gauges 9, 10, the wall thickness is controlled highly accurately.

84. 发明专利

JPS6067803A MEASURING APPARATUS FOR PIPE 失效
公开(公告)号：JPS6067803A
公开(公告)日：1985-04-18
申请号：JP17584283
申请日：1983-09-22
申请人： SUMITOMO METAL IND , HITACHI LTD
发明人： FUJISAWA KAZUO , YAMAGUCHI HISAO , KADOWAKI TAKASHI , ITOU SUSUMU , SATOU KAZUYA , SASAKI SOUJI
IPC分类号： G01B7/00 , G01B7/02 , G01B7/06 , G01B7/12 , G01B17/02
摘要： PURPOSE:To measure outside and inside diameters of a steel pipe, by measuring wall thickness by generating electromagnetic supersonic waves toward a hot steel pipe and detecting a coil impedance electromagnetically connected to this steel pipe. CONSTITUTION:An induction electric current is generated by transmitting coils 5, 5' on the outside surface of a steel pipe 2 provided with a DC magnetic field. This is created by supersonic waves of longitudinal waves from the outside surface of the steel pipe 2. This supersonic wave is detected by receiving coils 6, 6'. The coils 5, 5' are provided with a pulse current for generation of supersonic waves from pulse current generating circuits 8, 8'. And, the wall thickness of the steel pipe 2 is obtained from a signal given to the receiving coil responding to the pulse current. Further, from a continuous sine-wave generating circuit 11, 11', a sine-wave current is transmitted to the coils 5, 5' to measure impedance and by determining distance between coil and outside surface of pipe, inside and outside diameters of the steel pipe are measured.

85. 发明专利

JPS6019682A LIFTING MAGNET 失效
公开(公告)号：JPS6019682A
公开(公告)日：1985-01-31
申请号：JP12936384
申请日：1984-06-25
申请人： HITACHI LTD , HITACHI ELECTRIC SYSTEMS
发明人： ITOU SUSUMU , AOSHIMA MASARU , SOTODATE AKIYOSHI , WACHI TADASHI , KADOWAKI TAKASHI , HARADA KUNIO , ABE TERUKI , KOBASHI MASARU , SHINOHARA YASUSHI , UEISHI ISAMU
IPC分类号： B66C1/06 , B66C1/00

86. 发明专利

JPS59180357A Electromagnetic ultrasonic flaw detector 失效
标题翻译：电磁超声波检波器
公开(公告)号：JPS59180357A
公开(公告)日：1984-10-13
申请号：JP5261483
申请日：1983-03-30
申请人： Hitachi Ltd , Sumitomo Metal Ind Ltd
发明人： YAMAGUCHI HISAO , FUJISAWA KAZUO , SATOU KAZUYA , KUBOTA JIYUN , SASAKI SOUJI , KADOWAKI TAKASHI , ITOU SUSUMU
IPC分类号： G01N29/04 , G01N29/24
CPC分类号： G01N29/2412 , G01N29/4454
摘要： PURPOSE:To facilitate balancing and stabilize subsequent operations by detecting the peak value of an ultrasonic wave signal generated by an elastic wave without synchronous detection. CONSTITUTION:A pulse current ep is supplied from a pulse current generating circuit 5 to transmitting coils 3a1 and 3a2 and an elastic wave signal generated in a body 6 to be detected is detected by receiving coils 3b and 3c to obtain ultrasonic wave signals ed and eg of a normal and a defective part through amplifiers 11a and 11b. Only the 1st transmitted waves of both signals ed and eg are extracted by gate circuits 12a and 12b by the gate signal (g) of a control signal generating circuit 13 which synchronizes with the circuit 5, and peak detection and holding are performed by peak detectors 14a and 14b. Peak detected values edp and edp are supplied to a subtracting circuit 15 to obtain their difference signal, which is sampled and held by a sample holding circuit 15 with the sampling signal (s) from the circuit 13, thereby generating an output h0. Thus, balancing is facilitated because of the peak value detection and stability is obtained.
摘要翻译：目的：通过检测由弹性波产生的超声波信号的峰值而无需同步检测，便于平衡和稳定后续操作。构成：脉冲电流ep从脉冲电流产生电路5提供给发射线圈3a1和3a2，并且通过接收线圈3b和3c检测在被检测体6中产生的弹性波信号，以获得超声波信号ed，例如通过放大器11a和11b的正常和有缺陷的部分。只有由门电路12a和12b通过与电路5同步的控制信号发生电路13的门信号（g）提取两个信号的第一发送波，并且由峰值检测器执行峰值检测和保持 14a和14b。峰值检测值edp和edp被提供给减法电路15以获得它们的差分信号，其由来自电路13的采样信号由采样保持电路15采样和保持，从而产生输出h0。因此，由于获得峰值检测并获得了稳定性，因此平衡容易。

87. 发明专利

JPS59126903A Electromagnetic ultrasonic measuring instrument 失效
标题翻译：电磁超声波测量仪器
公开(公告)号：JPS59126903A
公开(公告)日：1984-07-21
申请号：JP113683
申请日：1983-01-10
申请人： Hitachi Ltd
发明人： ITOU SUSUMU , KADOWAKI TAKASHI , FUJIMOTO MINORU
IPC分类号： G01B7/06 , G01B7/00 , G01N29/04
摘要： PURPOSE: To measure automatically the thickness of a material to be examined having an optional surface such as a plane, a curved face, a slope, or the like while attracting a measuring device to hold it on the material to be examined, by providing a means, which generates a magnetic attraction, in a driving truck where an electromagnetic ultrasonic probe measuring the thickness is mounted.
CONSTITUTION: A driving truck 12 of the electromagnetic ultrasonic measuring device is attracted to a material 7 to be examined by the attraction of an attracting DC electromagnet. The driving truck 12 is operated by a control panel 26 on the ground to measure automatically the thickness of the material 7 to be examined. An antenna sensor 36 is provided at the front end of the driving truck 12, and such control is possible that the driving truck is turned automatically when it senses an obstacle 35.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过提供一种吸引测量装置将其保持在待检查材料上的方法来自动测量待检查材料的厚度，该材料的厚度可以是诸如平面，曲面，斜面等等，在驱动卡车中产生磁吸引力的装置，其中安装了测量厚度的电磁超声波探头。构成：电磁式超声波测量装置的驱动卡车12被吸引直流电磁铁的吸引力吸引到要检查的材料7上。驾驶卡车12由地面上的控制面板26操作，以自动测量待检查材料7的厚度。天线传感器36设置在驱动卡车12的前端，并且这种控制可能是当驾驶卡车感测到障碍物35时自动转动。

88. 发明专利

JPS58123456A ELECTROMAGNETIC ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS58123456A
公开(公告)日：1983-07-22
申请号：JP594682
申请日：1982-01-20
申请人： HITACHI LTD
发明人： KADOWAKI TAKASHI , ITOU SUSUMU , FUJIMOTO MINORU , TANAKA AKIHIRO , SUZUKI MIDORI
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To improve a generating efficiency of a DC magnetic field of a magnet and to miniaturize and lighten a device, by a method wherein a transmitting and receiving coil is mounted to one leg of a core, formed in a U-shape in cross section, of which a DC electromagnet consists, and a DC exciting coil is wound around the leg, whereto the transmitting and receiving coil is attached, in the proximity of the transmitting and receiving coil. CONSTITUTION:A transmitting an receiving coil 17 is mounted to a one leg, i.e., a leg 3 of a core 5, formed in a U-shape in cross section, of which a DC electromagnet consists, and a DC exciting coil 6 is wound around the leg 3, whereto the transmitting and receiving coil 7 is attached, in the proximity of the transmitting and receiving coil 7. A conventional device, in which the DC exciting coil 6 is located to a yoke 5, needs 6000 AT in order to generate a magnetic field of 2 Tesla, meanwhile, if the DC exciting coil 6 is mounted to the leg 3 of the core whereto the transmitting and receiving coil is attached, a magnetic flux density of 2 Tesla is generated by a magnetomotive force of 4000 AT. That is, a similar magnetic field is produced by an electromotive force mu of the DC exciting coil 6 being 67% (=4000/6000) of that of the conventional device and a calorific value H being 44%[=(4000/6000) ]of that of the conventional device. The weight of the DC exciting coil is determined by the calorific value, the weight of the DC exciting coil is reduced to about 44%, the miniaturization and lightening of the DC exciting coil also miniaturizes a core part around which the DC exciting coil is wound, which results in permitting the reduction in weight by about 50% on the whole.

89. 发明专利

JPS5895008A PREVENTIVE DEVICE OF NOISE AT TRANSFER OF STEEL MATERIAL 失效
公开(公告)号：JPS5895008A
公开(公告)日：1983-06-06
申请号：JP18920381
申请日：1981-11-27
申请人： HITACHI LTD
发明人： ITOU SUSUMU , SATOU KATSUTOSHI , AOSHIMA MASARU
IPC分类号： B65G11/20
摘要： PURPOSE:To control a pattern of an exciting current to a solenoid coil by a controller on the basis of comparison of a detected speed value with a target speed value, by detecting the actual transfer speed of a steel pipe with a detector. CONSTITUTION:In case of presetting a transfer speed of a steel pipe to within a range of 0.05-0.1m/sec, if an actual transfer speed increases exceeding this range, the speed is detected by a detector 24 to obtain a difference from a target speed value in a speed converter 25, on the basis of this compared signal, a controller 16 decreases a negtive feedback quantity to a power source side to increase an exciting current to solenoid coils 11 and perform brake control to a decreasing direction unitl the transfer speed reaches the target speed value. On the contrary, when the transfer speed decreases to not within said range by said electromagnetic brake, on the basis of then compared signal, the controller 16 inverts the operating direction of a thyristor 15 to demagnetize residual magnetism of the steel pipe by a prescribed reverse current and automatically release the electromagnetic brake.

90. 发明专利

JPS5744850A Seam detector 失效
标题翻译： SEAM检测器
公开(公告)号：JPS5744850A
公开(公告)日：1982-03-13
申请号：JP11978280
申请日：1980-09-01
申请人： Hitachi Ltd
发明人： ITOU SUSUMU , KATSUTA KIYOSHI , TANAKA AKIHIRO , KADOWAKI TAKASHI
IPC分类号： G01N27/82 , G01N27/90
CPC分类号： G01N27/902
摘要： PURPOSE:To detect the seam of a steel pipe or the like with high accuracy, by providing a first -shaped core generating magnetic flux at a right angle to the welded part of a material to be examined and a second -shaped core generating magnetic flux in the longitudinal direction of the welded portion. CONSTITUTION:One 30 of the -shaped megnet cores is put in parallel with the longitudinal direction of a steel pipe 20, while the other -shaped magnet core 40 is arranged in the diametral direction of the steel pipe 20; both of the -shaped cores are arranged in an L-shaped form. The primary winding P is made on two of the cores attached to each other, while the second winding SR is made on the leg 31 of the core 30 and the second winding SC is made on the leg 41 of the core 40. Hence the primary winding P is driven by AC and voltage is induced to each of the secondary windings SC, SR. When these cores are installed on a seamless steel pipe in such a way that the difference between SC and SR is reduced to zero, a detection signal can be obtained when they are installed on the seam part. By amplifying the signal, the seam part can be detected effectively.
摘要翻译：目的：为了高精度地检测钢管等的接缝，通过提供与待检查材料的焊接部分成直角的磁通量的第一形状的磁芯和产生磁通量的第二形磁芯在焊接部的长度方向上。构成：将30个形状的巨型铁芯与钢管20的长度方向平行放置，而另一个形状的磁芯40沿钢管20的直径方向排列; 两个形状的芯都以L形形式布置。初级绕组P在彼此附接的两个芯之间制成，而第二绕组SR制成在芯30的脚31上，并且第二绕组SC制成在芯40的脚部41上。因此，初级绕组绕组P由AC驱动，并且电压被感应到每个次级绕组SC，SR。当将这些芯安装在无缝钢管上时，使得SC和SR之间的差减小到零，当它们被安装在接缝部分上时可以获得检测信号。通过放大信号，可以有效地检测接缝部分。

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