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51. 发明专利

JPS601394A METHOD OF PREDICTED STARTING OF OPERATION IN CONTROL OF AIR COMPRESSORS 失效
公开(公告)号：JPS601394A
公开(公告)日：1985-01-07
申请号：JP10773883
申请日：1983-06-17
申请人： HITACHI LTD
发明人： ABE SHIGERU , SHIBATA EKIZOU , KANETANI TADASHI , FUJITA YASUNOBU , KONISHI MITSUSHI
IPC分类号： F04B49/06 , F04B49/02 , F04D27/00
摘要： PURPOSE:To prevent an unnecessary air compressor from being put into operation, by beginning to operate a necessary number of air compressors as a stop instruction is cut off before the load sharply increases, and by thereafter applying the stop instruction again when the load pressure has dropped. CONSTITUTION:When a time point T-t is reached, a pressure drop signal is forcibly applied to compressors by a predicted operation start instruction, regardless of the load pressure, so that a necessary number of compressors are run for a time t. In that case, a pressure rise signal HC is forcibly withheld. After a time point T, the quantity of air being used by the load increases sharply so that the load pressure becomes lower than a pressure rise point H. For this reason, a compressor stop instruction being cut off after the predicted starting of the compressors is applied again so that an original controlled state is restored.

52. 发明专利

JPS56125816A DEMAGNETIZER 失效
公开(公告)号：JPS56125816A
公开(公告)日：1981-10-02
申请号：JP2795480
申请日：1980-03-07
申请人： HITACHI LTD
发明人： ITOU SUSUMU , KATSUTA KIYOSHI , KANETANI TADASHI , SATOU KATSUTOSHI , HAYASHI YOSHIO
IPC分类号： F02B75/02 , H01F13/00
摘要： PURPOSE:To enable to eliminate simply the residual magnetism of a steel material by a method wherein plural independent magnets are connected to form an independent magnetic path in the material to be demagnetized, and excitation is performed changing over between positive and negative to perform demagnetization. CONSTITUTION:U character type magnets consisting of yokes 5, magnetic poles 6, 7 and exciting coils 8 are equipped on a frame 10 extending over nearly the whole length of a steel material 1 interposing a nonmagnetic material 9 between them and connected. When it is necessary to demagnetize plural steel materials 1A-1D at the same time, the length of the magnetic poles 6 or 7 is decided in accordance with the number of the materials. When the quality of material of the steel material 1 is a common steel, demagnetization can be executed simply by making a demagnetizing current being 50-100% of the magnetizing current to flow by one cycle. When the quality of material is a special steel, demagnetization can be executed simply by making a demagnetizing current being 100-300% of the magnetizing current to flow, but when the quality is, for example, chromium molybdenum steel or high manganese steel, two cycle demagnetization reversing the polarity is effective.

53. 发明专利

JPS5593705A WORK CONVEYOR 失效
公开(公告)号：JPS5593705A
公开(公告)日：1980-07-16
申请号：JP66679
申请日：1979-01-10
申请人： HITACHI LTD
发明人： ITOU SUSUMU , KANETANI TADASHI , SATOU KATSUTOSHI
IPC分类号： B65G11/20
摘要： PURPOSE:To convey works smoothly, by aligning many electromagnets along the way of conveyance and sequentially and repeatingly exciting each grouped magnets from the side of work entrance. CONSTITUTION:Exciting coils M11-33, aligned along a rail 6 on which steel pipes 2 are rolled and transferred in the arrow direction, are grouped. The coils M11, M21, M31 positioned on the sie of work entrance of each group are connected with a line A of an excitation controller 30, while other coils M12 are connected with a line B and coils M13 with a line C, and each line A, B, C alternates positive and nagative excitation at cycles per time t by means of the controller 30. The negative excitation reduces residual magnetism in each magnetic pole and facilitates adsorption with the following magnet. Thus the magnetic force functions as driving force in the direction of transfer for rolling the steel pipes 2 on the rail 6, which provides smooth conveyance of the works at a preset velocity.

54. 发明专利

JPS5512056A LOADER FOR HEXAGONALLY BUNDLING STEEL PIPES TO REDUCE NOISES 失效
公开(公告)号：JPS5512056A
公开(公告)日：1980-01-28
申请号：JP8304878
申请日：1978-07-10
申请人： HITACHI LTD
发明人： SATOU KATSUTOSHI , ITOU SUSUMU , KANETANI TADASHI , ABE AKISHI
IPC分类号： B65G57/18 , B65B27/10

55. 发明专利

JPS54130061A STEEL PLATE SHAPE DETECTOR PREVENTING MUTUAL INTERFERENCES 失效
公开(公告)号：JPS54130061A
公开(公告)日：1979-10-09
申请号：JP3659878
申请日：1978-03-31
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： FUJIWARA TAKANORI , IBUSUKI TOYOAKI , KANETANI TADASHI , ITOU SUSUMU , SATOU KATSUTOSHI
IPC分类号： G01L5/04 , B21B38/02 , G01B7/00 , G01B7/16 , G01B7/28
摘要： PURPOSE:To improve detection accuracy and sensitivity by providing magnetical shield bodies on core side faces and maintaining the distance between the shield bodies and the cores at more than twice the distance from the cores up to the steel plate to be detected of its shape. CONSTITUTION:This device obtains the flatness of a rolled steel plate by making use of the fact that there is a fixed proportional relation between the magnetic permeability and internal stress of the rolled steel plate, wherein the detector comprises combining two laminated U-form cores 7, 8 at a right angle, providing an excitation coil 1 at the contact point of the magnets thereof and simultaneously providing pressure detecting coils 2, 3 and gap detecting coils 4, 5. Magnetic shield plates 15 composed of magnetic material are provided near the side faces of the respective detectors constituted in this way so that the leaking magnetic flux emitting from the primary coil 1 is made difficult to reach the other detector. In addition, these are so constituted that the distance B from the shield plates 15 up to the core 8 is maintained more than twice the distance lg between the core 8 and the steel plate 6.

56. 发明专利

JPS54126356A LIFTING MAGNET WITH STEEL PLATE NUMBER DETECTOR 失效
公开(公告)号：JPS54126356A
公开(公告)日：1979-10-01
申请号：JP3310078
申请日：1978-03-24
申请人： HITACHI LTD , HITACHI OMIKA DENKI
发明人： ITOU SUSUMU , KANETANI TADASHI , SATOU KATSUTOSHI , ICHIISHI TSUNEO , OONISHI HIROAKI , AOSHIMA MASARU
IPC分类号： B66C1/08 , B66C1/00
摘要： PURPOSE:To hoist assuredly a predetermined number of steel plates by providing a steel plate number detector for precisely measuring the number of steel plates hoisted and feeding back the signal from the detector to the excitation strength of a lifting magnet. CONSTITUTION:When plural lifting magnets 30-34 are fitted to a hoist beam 35 and long steel plates 6 are hoisted by wires 36 of a crane, a detector magnet 40 is mounted on the plates where no flexure occurs. The detection signal from the detector magnet 40 is compared with a hoist number instruction in a comparison arithmetic unit for conducting automatic steel plate number setting. The output of the detector magnet 40 is fed back to lifting magnets 30-34 for hoisting an instructed number of steel plates.

57. 发明专利

JPS54118078A LOADER FOR LOW NOISES STEEL PIPE BUNDLE 失效
公开(公告)号：JPS54118078A
公开(公告)日：1979-09-13
申请号：JP2353078
申请日：1978-03-03
申请人： HITACHI LTD
发明人： SATOU KATSUTOSHI , ITOU SUSUMU , KANETANI TADASHI
IPC分类号： B65G57/18 , B65B27/10 , B65B35/56
摘要： PURPOSE:To reduce noises, by making fall small by attaining efficient, stable stacking in a stage shape by means of the hexagonal bundles of steel pipes. CONSTITUTION:A lifting frame 36 rises and stops at a location where a gap between the frame 36 and a magnetic pole rail 34 is (The diameters of steel pipes + 2-3 mm), and steel pipes 45 that are rolling on a skid rail 31 under this condition move to a base of the lifting frame 36 and stop. After storing the fixed number of pipes, a power soruce of a magnetic field generator 33 is broken, the steel pipes are let fall on the frame 36 and stacking in one stage shape is completed. After the frame 36 is let drop and the fixed number of pipes are stored, pipes are let fall onto said frame 36, and stacking in two stage shape is finished. Thereafter, this operation is successively repeated, and hexagonal stacking is completed. Then, the magnetic field generator 33 is opened by means of an opening and closing cylinder 44, and steel pipes are carried to a bundling machine.

58. 发明专利

JPS5495474A LOWWNOISE STEEL PIPE LOADER 失效
公开(公告)号：JPS5495474A
公开(公告)日：1979-07-27
申请号：JP18778
申请日：1978-01-06
申请人： HITACHI LTD
发明人： SATOU KATSUTOSHI , ITOU SUSUMU , KANETANI TADASHI
IPC分类号： B65G57/18 , B65G11/20 , B65G47/00 , B65G47/29 , B65G47/52
摘要： PURPOSE:To provide a compact loader of high braking effect, by providing magnetic rails under magnetic arms and reversing the rolling of steel pipes on skid rails to brake the pipes. CONSTITUTION:The low-noise steel pipe loader comprises a magnetic field generator 42, the magnetic arms 40 which are magnetized by the magnetic field generator 42 and have at their lower parts the magnetic rails 43 for attracting the steel pipes 80, a reserve means which has a lifter 50 and is provided under the arms 40 to reserve the steel pipes 80, and the skid rails 41 which are installed in front of the arms 40 so that the steel pipes 80 are rolled and guided to the magnetic rails 43 of the arms 40. The rolling of the steel pipes 80 on the skid rails 41 is reversed so that the pipes are braked. Therefore, the low-noise steel pipe loader can be compact and has a high braking effect.

59. 发明专利

JPS5459765A LOW NOISE STEEL PIPE LOADING DEVICE 失效
公开(公告)号：JPS5459765A
公开(公告)日：1979-05-14
申请号：JP12438877
申请日：1977-10-19
申请人： HITACHI LTD
发明人： SATOU KATSUTOSHI , ITOU SUSUMU , KANETANI TADASHI , KOBASHI MASARU , YAMADA HIROSHI , ABE AKISHI
IPC分类号： B65G57/18 , B65G57/04
摘要： PURPOSE:To obtain a device of preventing noises due to the fall of steel pipes into a cradle that ensures high treating speed and can effectively obviate noses, in a device that trasnfers and loads the steel pipes transferred on a skid rail. CONSTITUTION:Steel pipes 80 rolled on a skid rail 41 downward tilting are once stopped by means of a movable stopper 45, and succeeding steel pipes 80 are successively stopped at a rear end of a guide rail 46 upward projected. The movable stopper 45 is downward turned slowly, said steel pipes 80 are moved along a magnetic pole rail 43 while the pipes 80 are subject to the action of magnetic force generated by means of a magnetic field generator 42 and shifted at low speed until they reach a stopper 44. After a fixed number of steel pipes 80 are stored onto a lifting lifter 50 by thereafter repeating the same operation, the magnetic field generator 42 is backed by driving a cylinder 47, and the steel pipes 80 groups are shifted to the next precess by operating the lifter 50.

60. 发明专利

JPS5449767A NOISE PREVENTIVE APPARATUS FOR PIPES IN TRANSIT 失效
公开(公告)号：JPS5449767A
公开(公告)日：1979-04-19
申请号：JP11556477
申请日：1977-09-28
申请人： HITACHI LTD
发明人： SATOU KATSUTOSHI , ITOU SUSUMU , KANETANI TADASHI , OONISHI HIROAKI , ICHIISHI TSUNEO , OZAKA AKIRA
IPC分类号： B65G11/20 , B65G43/00
摘要： PURPOSE:To reduce noise generated from clashing of steel pipes with each other by improving magnetic efficiency with a magnetic closed circuit formed through the steel pipes employing three lines of magnetic rail. CONSTITUTION:When an exciting coil 27 is excited positively, a skid rail 21 is turned to the N pole and the skid rails 22a and 22b to the S pole, whereby a magnetic closed loop is formed to brake a steel pipe 10. When the coil is excited inversely, by contrast, the skid rail 21 is turned to the S pole and the skid rails 22a and 22b to the N pole. Thus, an opposite closed loop is formed, thereby permiting the steel pipes to turn freely. In this manner, the steel pipes 10 are transferred on the skid rails being subjected to repetition of braking and free rotation. The magnet is a sort of shell construction, thereby reducing leakage of magnetic flux and hence, the magnetic efficiency can be improved.

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