专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS60243526A APPARATUS FOR MEASURING AXIAL FORCE OF RAIL 失效
公开(公告)号：JPS60243526A
公开(公告)日：1985-12-03
申请号：JP9867284
申请日：1984-05-18
申请人： JAPAN NATIONAL RAILWAY , HITACHI LTD , HITACHI ELECTR ENG
发明人： KASHIWATANI KENJI , TAKESHITA KUNIO , ONO TOSHIYUKI , ITOU MASAYUKI , SUGIMURA SHIYUUJI
IPC分类号： G01L1/00 , G01L1/12 , G01L3/10 , G01N27/82 , G01R33/12
摘要： PURPOSE:To make it possible to measure the stress in the axial direction of a rail, by differentially connecting magnetic anisotropy detecting coils so that disturbance magnetic fields are offset. CONSTITUTION:Detecting coils 17-1 and 17-2 of one magnetic anisotropy sensor 15-1 are cumulatively connected. Detecting coils 19-1 and 19-2 of another magnetic anisotropy sensor 15-2 are similarly connected. When the sensors 15-1 and 15-2 are arranged at an equal angle with respect to a rail, the voltages, caused by disturbance magnetic fluxes, which are induced in the detecting coils 17-1 and 17-2 and 19-1 and 19-2, become equal. When the coils 17-1 and 17-2 and 19-1 and 19-2 are differentially connected, the voltages are offset, and no output appears across output terminals 12. When exciting coils 18-1 and 18-2 are connected out of phase, the signal voltages, which are induced in the detecting coils 19- 1 and 19-2 become out of phase. Since the detecting coils 19-1 and 19-2 and 17-1 and 17-2 are differentially connected, the signals are added, i.e., the result is the twice the original voltage. Therefore, the detected signal of the degree of magnetization of the rail by the exciting coils of the sensors themselves becomes twice the original value. The disturbances are offset, and the proper signal can be positively detected.

2. 发明专利

JPS6017330A MEASURING DEVICE OF STRESS OF RAIL SHAFT 失效
公开(公告)号：JPS6017330A
公开(公告)日：1985-01-29
申请号：JP12480883
申请日：1983-07-11
申请人： JAPAN NATIONAL RAILWAY , HITACHI LTD , HITACHI ELECTR ENG
发明人： KASHIWATANI KENJI , SUGIYAMA TOORU , ITOU MASAYUKI , KISHIMOTO SATORU , UENO YOSHIKATSU
IPC分类号： G01L1/00 , G01L5/00 , G01N27/72 , G01R33/12
摘要： PURPOSE:To obtain a reproducible and reliable result under non-destructive state of a rail as laid by combining a magnetic anisotropy sensor with a demagnetizer to demagnetize a measuring portion and measure the degree of the magnetic anisotropy of a rail to be measured. CONSTITUTION:Since the magnetic anisotropy sensor 1 can be reduced at the size of a part directly fitted to a sample to be measured, the sensor 1 is formed unitedly with a core 2, a coil 3 and a holder 4 of the demagnetizer as a direct measuring part 10. The demagnetizer consisting of the core 2 and the demagnetizing coil 3 is excited by AC and reduces its amplitude gradually. The measuring device is constituted by two parts, i.e. the direct measuring part 10 to be pressed to the rail 5 directly and a measuring circuit part 11 combining a demagnetizer control circuit 7, a measuring circuit 6 in the magnetic anisotropy sensor, etc. The latter circuit part 11 can be controlled consistently from demagnetizing operation to the final output by a microcomputer.

3. 发明专利

JPS62121325A ELECTROMAGNETIC TYPE STRESS MEASURING INSTRUMENT NOT INFLUENCED BY LIFT-OFF 失效
公开(公告)号：JPS62121325A
公开(公告)日：1987-06-02
申请号：JP26130385
申请日：1985-11-22
申请人： JAPAN NATIONAL RAILWAY
发明人： KASHIWATANI KENJI
IPC分类号： G01L1/00
摘要： PURPOSE:To measure instantaneously a residual stress and stress by adjusting a magnetic core of a sensor, detecting a lift-off by a coil, and erasing an influence of the lift-off by an operator. CONSTITUTION:An exciting magnetic core 1 to which an exciting coil 4 and a lift-off detecting coil 6 have been wound, and a magnetic potential difference detecting magnetic core 2 to which a magnetic potential difference detecting coil 5 for detecting a magnetic potential difference generated by a stress has been wound are made orthogonal to each other, by which a magnetic anisotropy sensor is constituted. This device is constituted of a transmitter for supplying a constant-current to this sensor coil 4, a synchronous rectifier for rectifying an output voltage of the coil 5 by synchronizing with a signal of the transmitter through an amplifier, a rectifier for rectifying an output of the coil 6 through an amplifier, and a synchronous rectifier, and an operator for calculating an output ratio of a difference between an output of the rectifier and an output voltage of the rectifier at the time when there is no measuring object, etc. In this state, the tip of the magnetic core 2 is adjusted in the direction where a lift-off becomes large against the tip of the magnetic core 1, lift-off characteristics of outputs of the coil 5 and 4 are made to coincide, and an influence of the lift-off is erased.

4. 发明专利

JPS61138134A Electromagnetic stress measuring instrument 失效
标题翻译：电磁应力测量仪器
公开(公告)号：JPS61138134A
公开(公告)日：1986-06-25
申请号：JP25918484
申请日：1984-12-10
申请人： Hitachi Electronics Eng Co Ltd , Hitachi Ltd , Japanese National Railways
发明人： KASHIWATANI KENJI , ITO MASAYUKI , YAMADA TETSUO
IPC分类号： G01R33/12 , G01L1/00 , G01L3/10 , G01N27/72
CPC分类号： G01L3/102
摘要： PURPOSE:To obtain an accurate and reliable measurement result by implanting three coils and a probe in a common magnetic material substrate with high magnetic permeability and bringing the probe into contact even when the surface of a magnetic structure body to be measured is curved. CONSTITUTION:Cores 2a, 2b, and 2c of 'Permalloy(R)', etc., wound with coils 3a, 3b, and 3c are arranged on the common core base 1 made of, for example, 'Permalloy(R)' at respective vertexes of a rectangular equilateral triangle whose two isosceles sides cross each other at the position of the core 2b. Then, the cores 2a, 2b, and 2c are arranged at measurement positions in contact with a shaft 6 which is applied with torque as shown by 7a and 7b, and then the three cores 2a, 2b, and 2c contact the measurement object surface of the shaft 6 having a cylindrical surface completely. Consequently, a stable and reliable measured value which has less variation is obtained.
摘要翻译：目的：为了获得准确可靠的测量结果，将三个线圈和探头注入到具有高磁导率的普通磁性材料基片中，并使探针接触，即使被测量的磁性结构体的表面是弯曲的。构成：卷绕有线圈3a，3b和3c的“坡莫合金”等的芯2a，2b和2c布置在由例如“Permalloy”制成的公共芯基座1上其两个等腰边在芯2b的位置处彼此交叉的矩形等边三角形的各个顶点。然后，如图7a和7b所示，芯2a，2b，2c配置在与施加有转矩的轴6接触的测量位置，然后三芯2a，2b和2c与测量对象表面接触轴6具有完全的圆柱形表面。因此，获得了具有较小变化的稳定可靠的测量值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式