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1. 发明专利

JPH01250712A METHOD FOR MEASURING TWIST ANGLE OF CABLE STRAND 失效
公开(公告)号：JPH01250712A
公开(公告)日：1989-10-05
申请号：JP7847588
申请日：1988-03-31
申请人： NIPPON STEEL CORP
发明人： HOJO TETSUO , EGUCHI TATSUYA , TATEISHI SHUICHI , KAWAMURA KOJI
IPC分类号： G01B21/22
摘要： PURPOSE:To measure the twist angle of a cable strand, on the basis of the sensor signal obtained by rotating the gap sensor, which is provided to a twisted cable in the axial direction thereof, in the circumferential direction of the cable, and the shift quantity of the cable strand in the circumferential direction from a quantity-of-rotation sensor. CONSTITUTION:When gap sensors 2A, 2B arranged outside a cable 1 having a long pitch in parallel to the axial direction thereof are rotated, an uneven gap waveform is obtained corresponding to the shape of the strand 3 of the surface of the cable 1 and the signal U corresponding to the quantity of rotation is obtained from a quantity-of-rotation sensor (not shown) and these data are used to calculate the shift quantity DELTAL of the same strand in the circumferential direction thereof from the quantity of the rotation at the peak point when the sensor 2A crosses the same strand and that of the peak point when the other sensor 2B crosses. Then, from the relation with the interval L between the sensors 2A, 2B, the twist angle of the strand 3 can be easily calculated.

2. 发明专利

JPH01182653A DEFECT DETECTING METHOD FOR CABLE TERMINAL CASTING PART 失效
公开(公告)号：JPH01182653A
公开(公告)日：1989-07-20
申请号：JP152388
申请日：1988-01-07
申请人： NIPPON STEEL CORP
发明人： HOJO TETSUO , SAKAMOTO YOSHIFUMI , EGUCHI TATSUYA , TATEISHI SHUICHI
IPC分类号： F16G11/00
摘要： PURPOSE:To detect a relatively large cavity detect in the inner part of a casting part in a socket in a simple manner by comparing an echo pattern of a reflected wave, obtaining a flow frequency supersonic wave after being incident in the axial core direction from the outside, with a reference echo pattern under the specified flaw detection sensitivity. CONSTITUTION:Using a reference sample 10 being manufactured with the same material as casting metal of an inspection subject and having an artificial flaw in a specified position, a timing axis is adjusted so as to cause an echo being reflected out of a notch 11 in the specified depth D1 to be adjusted to a proper position from oscillation on a faceplate of a cathode-ray tube 7, and depth from a surface of the reference sample 10 is made so as to be read out of the timing axis. A decay curve of echo height in this reflected wave is set down to a reference waveform for casting part inspection. Next, a supersonic flaw probe 5 is made contact toward a shaft center of a socket casting part 1, and a waveform to be obtained by this contact is compared with the reference waveform and thereby the presence of a defect and its position are measured. In this case, if there is a relatively large cavity defect in a supersonic propagation path, supersonic propagation is hindered so that the reflected wave out of the front is suddenly attenuated from the defect position.

3. 发明专利

JP2003056121A Anticorrosion method for post-tension steel for prestressed concrete 审中-公开
标题翻译：用于预应力混凝土的后张钢的抗腐蚀方法
公开(公告)号：JP2003056121A
公开(公告)日：2003-02-26
申请号：JP2001243345
申请日：2001-08-10
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NORO MAI , SEISHIYOU MORIO , MATSUDA EIKO , EGUCHI TATSUYA
IPC分类号： E04C5/08 , E01D1/00 , E01D2/00 , E01D101/24 , E01D101/26 , E01D101/28 , E01D101/40 , E04G21/12
摘要： PROBLEM TO BE SOLVED: To provide an anticorrosion method for post-tension steel for prestressed concrete maintaining an environment not corroding a periphery of the PC steel by drying the PC steel so that no water contents such as moisture or dew condensation exist around the PC steel by a simple facility.
SOLUTION: A prestressed concrete (hereinafter referred to as PC) member 6 of a post-tensioning system applying prestress by arranging the PC steel 5 in a sheath pipe 3 embedded in concrete 33 is characterized by that space is provided between the sheath pipe 3 and the periphery of the PC steel 5, and dry air A1 or anticorrosive gas A such as nitrogen gas is filled in the space.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为预应力混凝土提供一种用于预应力混凝土的后处理钢的防腐蚀方法，其通过干燥PC钢来维持不腐蚀PC钢周边的环境，使得在PC钢周围不存在水分含量通过一个简单的设施。解决方案：通过将PC钢5设置在嵌入混凝土33中的护套管3中，对预应力进行预应力的预应力混凝土（以下简称PC）构件6的特征在于，在护套管3和 PC钢5的外围，以及干燥空气A1或诸如氮气的防腐气体A填充在该空间中。

4. 发明专利

JPH10159019A CORROSIONPROOF METHOD OF CABLE FOR SUSPENSION STRUCTURE 失效
公开(公告)号：JPH10159019A
公开(公告)日：1998-06-16
申请号：JP33016696
申请日：1996-11-27
申请人： NIPPON STEEL CORP , HONSHU SHIKOKU RENKAKUKYO , KOBE STEEL LTD
发明人： SEISHIYOU MORIO , EGUCHI TATSUYA , SAEKI SHOICHI , MATSUMOTO HIROTERU , OKUDA MOTOI , FURUYA KAZUHIKO , KANEDA KYOICHI , KUWAMOTO SHUNICHI
IPC分类号： E01D11/00 , E01D11/02 , E01D11/04 , E01D19/08 , E01D19/16 , E01D101/00
摘要： PROBLEM TO BE SOLVED: To dry the inside of a cable at all times by installing air supply sections and exhaust sections conducted with the inside of a coating at proper intervals in the longitudinal direction of the cable for suspension structure, stationarily forwarding a dry gas into the cable and discharging the gas containing moisture. SOLUTION: Air supply sections 15 and exhaust sections 16 conducted with the inside of a cable coating layer are mounted alternately at proper intervals in the longitudinal direction of the cable 13 for the suspension structure. The air supply section 15 and the exhaust section 16 are formed of a air supply cover and an exhaust cover cylindrically constituted by joining both ends of the half member of a cylindrical body. A supplied-air drier 23 is installed to the tower top 20 of a suspension bridge 19, and a dry gas is flowed into the coating layer of the cable 13 from the air-supply covers. The dry air flowed into the cable 13 is flowed into the clearances of metal wires, and discharged from the exhaust ports of the exhaust covers. Accordingly, the dry gas flowed into the cable is flowed smoothly, and moist environment in the cable for the structure can be improved into dry environment difficult to rust.

5. 发明专利

JPH09304354A METHOD FOR DETECTING DISCONNECTION OF CABLE ELEMENT WIRE 失效
公开(公告)号：JPH09304354A
公开(公告)日：1997-11-28
申请号：JP12428096
申请日：1996-05-20
申请人： NIPPON STEEL CORP
发明人： SEISHIYOU MORIO , EGUCHI TATSUYA , TAKAMI SHINICHI , OKADA HIROYUKI , ISHIDA TSUGIO , UDAGAWA TATSUSHI
IPC分类号： G01N29/04 , G01H5/00 , G01N29/00 , G01N29/18
摘要： PROBLEM TO BE SOLVED: To detect disconnection of the element wires of a parallel-wire cable that is a hanging member of a bridge, such as a cable stayed bridge or a suspension bridge, or of a construction. SOLUTION: Part of a cover 5 at a position that is 5m or so away from the end 3 of cable is peeled, an ultrasonic probe 7 is contacted with the side of an element wire 2 for examination, and ultrasonic pulses of a predetermined frequency are input to the element wire 2 by an ultrasonic flaw detector 8. The input ultrasonic pulses propagate within the element wire 2 toward a socket 3 and, if the element wire 2 is ruptured, are reflected at the rupturing point; if the element wire 2 is not ruptured, they are reflected at an element wire terminal point 3 inside the socket. The reflected pulses are detected by the ultrasonic probe 7 and converted into voltage signals by the ultrasonic flaw detector 8, and a display device 9 is used to determine whether or not there is a rupture and displays the rupturing position. If there are no reflected waves, the element wire 2 is judged to be ruptured diagonally.

6. 发明专利

JPH0390688A COLORED CABLE 失效
公开(公告)号：JPH0390688A
公开(公告)日：1991-04-16
申请号：JP22306789
申请日：1989-08-31
申请人： NIPPON STEEL CORP
发明人： HOJO TETSUO , EGUCHI TATSUYA , TSUCHIDA ISAMU
IPC分类号： D07B1/16
摘要： PURPOSE:To obtain the subject cable useful for suspension bridges, etc., without impairing beautiful appearance for a long period by closely adhering and fixing a colored thermoplastic resin sheet, colored to an optional color and having high weather resistance to a cable without using an adhesive. CONSTITUTION:The objective cable obtained by superposing both selvages 11 of a beltlike colored thermoplastic resin sheet 10, colored to an optional color and having high weather resistance, joining the colored resin sheet 10 to the outer periphery of a cable 1 suspended in the air, thermally shrinking the sheet, closely adhering and covering the cable. Furthermore, the aforementioned sheet 10 has no adhesive and the starting end 13 and the back end 14 of the above-mentioned sheet 10 are preferably tightened and fixed by thermal shrinkage of ring anti-slip materials 16 manufactured from a material similar to that of the aforementioned sheet 10.

7. 发明专利

JP2000008319A METHOD AND DEVICE FOR MANUFACTURING FIELD FOCUSING PARALLEL LINE STRAND 失效
公开(公告)号：JP2000008319A
公开(公告)日：2000-01-11
申请号：JP17837098
申请日：1998-06-25
申请人： NIPPON STEEL CORP
发明人： EGUCHI TATSUYA , KONNO SHINICHI , YANO YOSHITAKA , MOCHIZUKI TAKASHI
IPC分类号： E01D11/00 , B21F7/00 , B65H51/015 , E01D11/02 , E01D19/16
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing device for a field focusing parallel line strand and its manufacture method which plan to make a process of a wire bundle exchanging work shorter. SOLUTION: Using a wire focusing facility 20 which is composed of many swift 14 arranged at intervals on one or a plurality of lines of straight linear focusing lines; a support frame 17 arranged along a longitudinal extension line of a focused line; an air bag 16 to move the support frame 17 vertically in parallel; and a movable truck 19 travelling on a rail 18, a wire bundle 25 is loaded on the movable truck 19 with the support frame 17 kept in ascending state, and the movable truck 19 is moved on the rail 18 to position each wire bundle 25 above each swift 14. The support frame 127 is then lowered by an elevating device to transfer each wire bundle 25 all together to the swift 14, and after the ascending of the support frame 17 again, the wire bundle 25 is drawn out from each swift 14 and bundled, and passed through a forming device for manufacturing a parallel line strand having a fixed shape.

8. 发明专利

JPH10159017A DAMPING DEVICE FOR PARALLEL CABLE 失效
公开(公告)号：JPH10159017A
公开(公告)日：1998-06-16
申请号：JP31937496
申请日：1996-11-29
申请人： SUMITOMO RUBBER IND , NIPPON STEEL CORP
发明人： KATO SEINOSUKE , MATSUMOTO TATSUJI , EGUCHI TATSUYA , OKUMOTO TAKESHI
IPC分类号： E01D11/00 , E01D1/00 , E01D11/02 , E01D11/04 , E01D19/16 , E01D101/00
摘要： PROBLEM TO BE SOLVED: To uniformly and efficiently perform damping with a simple configuration for any vibration in X direction for neighboring cables or Y direction orthogonal to the X direction in a parallel cables suspending a bridge girder. SOLUTION: This device comprises a fixing fitting 4 for fixing each cable of a cable set 3 consisting of two or four cables 2 arranged almost in parallel at an interval P, and a vibration damping tool 5. This vibration-damping tool 5 comprises a damper base body 6 made of a high attenuation rubber material having almost uniform spring rigidity against the deformation in X direction toward neighboring cable 2 on a plane orthogonal to the length direction of the cable 2 and deformation in Y direction orthogonal to X direction in the plane, and a projected piece 7 projected out from the damper base body 6 connecting the fixing fitting 4 at one end.

9. 发明专利

JPH09209501A FIXATION PART STRUCTURE FOR FIBER-REINFORCED PLASTIC CABLE 失效
公开(公告)号：JPH09209501A
公开(公告)日：1997-08-12
申请号：JP1889396
申请日：1996-02-05
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： KIMURA HIROMI , SEISHIYOU MORIO , EGUCHI TATSUYA , OKADA HIROYUKI
IPC分类号： E04C5/12
摘要： PROBLEM TO BE SOLVED: To provide a large-capacity, simple fixation part structure by fixing the load end side of an FRP cable radially spread and arranged in a conical socket with a thermosetting resin, and fixing the free end side with the thermosetting resin and a filler. SOLUTION: The terminal section of an FRP cable converged with many FRP wires 1 is inserted into a socket 3 formed into a conical shape so that the load end side of the cable 2 is made a small diameter and the free end side is made a large diameter, and the wires 1 are dispersively arranged in the socket 3 radially from the load end side to the free end side. A fixing material 6 made of only a thermosetting resin 4 is filled on the load end side in the socket 3, and the fixing material 6 made of a mixture of the thermosetting resin 4 and a filler 5 is filled on the free end side. The length of the fixing material 6 made of only the thermosetting resin 4 is preferably set to 1/20-2/3 of the whole length of the socket 3. The strength reduction due to vibration is prevented, and high safety can be maintained even when the resin of a fixation section is damaged.

10. 发明专利

JPS6352153B2 失效
公开(公告)号：JPS6352153B2
公开(公告)日：1988-10-18
申请号：JP22766885
申请日：1985-10-15
申请人： NIPPON STEEL CORP
发明人： TAWARAYA YOFUMI , TAKENO MASARU , EGUCHI TATSUYA
IPC分类号： D07B9/00 , E01D11/00 , E01D11/02 , E01D11/04 , E01D19/16 , E01D101/00 , E01D101/40 , F16G11/00 , F16G11/09

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