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51. 发明专利

JPH09200936A JUMPER 失效
公开(公告)号：JPH09200936A
公开(公告)日：1997-07-31
申请号：JP801296
申请日：1996-01-22
申请人： HITACHI CABLE
发明人： KIKUCHI HITOSHI , YAMAMOTO KENJI
IPC分类号： H02G7/20
摘要： PROBLEM TO BE SOLVED: To improve the vibration absorption property in the line direction of a jumper wire without increasing the rigidity of a mobile coupling part between the horizontal material of the jumper wire and a support material for this. SOLUTION: A weight 5 is attached through a spring 6 to a horizontal material constituting a jumper, and the weight 5 is made to oscillate in the longitudinal direction of the horizontal material. It is desirable that clamps 4 for attachment should be built before and behind one another between a plurality of horizontal materials thereby constituting this device, and that a bar-shaped guide 7 should be built between these clamps for attachment, and a weight 5 is set slidably on this guide 7, and further springs 6 are interposed between the front and rear of the weight 5 and the clamps 4 for attachment.

52. 发明专利

JPH08265947A JUMPER FOR BUNDLE CONDUCTOR TRANSMISSION LINE 失效
公开(公告)号：JPH08265947A
公开(公告)日：1996-10-11
申请号：JP6257895
申请日：1995-03-22
申请人： HITACHI CABLE
发明人： KARASHI YUJI , KIKUCHI HITOSHI
IPC分类号： H02G7/20
摘要： PURPOSE: To facilitate fixing of a jumper lead wire by locating the joint of a jumper rod and a jumper lead wire above the horizontal position of the jumper rod and locating the lowermost point of the jumper lead wire at the lowermost point of the jumper rod or above thereby suppressing generation of corona. CONSTITUTION: A jumper rod 7' is bent upward, on the opposite sides thereof, with an optimal radius of curvature toward the bundle conductor side and connected, at the end thereof, with a jumper lead wire 6' such that the joint is located above the horizontal position of the jumper rod 7'. The jumper lead wire 6' is substantially linear and does not sag downward. The jumper rod 7' is bent acutely, at the opposite ends thereof, with an optimal curvature so that the jumper rod 7' does not cause generation of corona. Formation of the jumper rod 7', especially bending thereof at the opposite ends, can be carried out previously and the fixing work thereof can be facilitated.

53. 发明专利

JP2522013B2 失效
公开(公告)号：JP2522013B2
公开(公告)日：1996-08-07
申请号：JP11457588
申请日：1988-05-13
申请人： HITACHI CABLE
发明人： TERADA SHIGERU , KIKUCHI HITOSHI
IPC分类号： H02G1/02

54. 发明专利

JPH061531A METHOD OF DELIVERING ROUGH DRAWING WIRE FROM TIGHT COIL 失效
公开(公告)号：JPH061531A
公开(公告)日：1994-01-11
申请号：JP15791492
申请日：1992-06-17
申请人： HITACHI CABLE
发明人： NAITO KOHEI , KUWABARA SHIGENORI , KIKUCHI HITOSHI , ITO HIROAKI
IPC分类号： B65H57/18
摘要： PURPOSE:To provide an extremely simple and inexpensive method of delivering a rough drawing wire capable of delivering continuously the rough drawing wire at a high speed but without kinking, when the rough drawing wire is delivered from the inside of a tight coil. CONSTITUTION:A stick 7 having a length exceeding the height of a tight coil 4 is inserted into the center hole of a tight coil 1 put on a pallet 5, on which its tip end is mounted attachably and detachably so as to pull up a rough drawing wire through the other end of the stick 7.

55. 发明专利

JPH0487210A ELECTRIC CABLE OF LOW WIND NOISE AND LOW AUDIBLE NOISE (AN) 失效
公开(公告)号：JPH0487210A
公开(公告)日：1992-03-19
申请号：JP20019190
申请日：1990-07-27
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： TAKEBE TOSHIRO , WATANABE MASATO , YAMADA TOSHIO , FUJISHIMA TAKAO , URASAWA KATSUYUKI , OGAWA MASAHIRO , SHIMOJIMA KIYOSHI , KARASHI YUJI , KAWAKAMI TAKASHI , YAMAMOTO KENJI , KIKUCHI HITOSHI , ITO HIROAKI
IPC分类号： H01B5/08
摘要： PURPOSE:To obtain an electric cable excellent in wind noise and AN characteristics by composing the outermost strand layer of thick and thin strands having nearly sectorial sections, forming a groove part at nearly the central position on the surface of each large diametral step and specifying their characteristics and shapes. CONSTITUTION:The outermost strand layer of a stranded wire is composed of thick strands 1 and thin strands 2 both having nearly sectorial sections and smooth step surfaces are spirally formed on the peripheral surface of the stranded wire by the difference between strands 1, 2, and also a groove part 11 is formed at nearly the central position on the surface of each large diametral step. Hereupon, where a center angle being formed with actual surfaces of each surface 10a of the large diametral step is thetae, an uneven level difference is h, an equivalent outside diameter of a surface- smooth electric cable to an ordinary electric cable is de, an outside diameter of the ordinary electric cable is d, a depth of a recess being formed between the strands adjoining each other which form a surface 10b of a small diametral step is delta and an opening width of the recess is t, expressions I to VI are satisfied. In this way, the electric cable of low wind noise and low AN having a constitution for attaining the optimum condition in both low wind noise and AN properties can be obtained.

56. 发明专利

JPH0475213A MANUFACTURE OF LIGHT ACSR FOR SUPERHIGH-VOLTAGE TRANSMISSION LINE 失效
公开(公告)号：JPH0475213A
公开(公告)日：1992-03-10
申请号：JP18833390
申请日：1990-07-17
申请人： HITACHI CABLE
发明人： KIKUCHI HITOSHI , KONO HIDEO , SAWAHARA TAKU , SHIMOJIMA KIYOSHI , KARASHI YUJI , KUBOKAWA HIROSHI
IPC分类号： H01B13/00 , H01B13/02 , H01B13/24
摘要： PURPOSE:To simplify outer layer stranding work on a spacer and prevent deformation of a wire external form even at the time of wiring by extrusion molding so as to integrally so that a spacer base may be integrally extrusion coated on a steel core. CONSTITUTION:A plastic substance, for instance, plastic compound 6 may be extruded on a steel core 2 sent into from an arrow direction by an extruder 4. The steel core 2 is sent in being guided by a core metal 5 engaging with an extruder 4 to be inserted through into plastic compound 6 in a chamber 11 to be sealed at a cross head 9 of a tip part of the core metal 5 and the extruder 4 for extruding a spacer 3 integrally on the steel core 2 from a nozzle 7. This plastic spacer layer is cooled or bridged in a water tank or a bridging tube 8 so that a continuous spacer 5 is extrusion molded. Aluminium strands 1, 1 are stranded on the spacer 5 to manufacture a light ACSR.

57. 发明专利

JPH03165244A OPERATION TESTING METHOD FOR HEAT PIPE 失效
公开(公告)号：JPH03165244A
公开(公告)日：1991-07-17
申请号：JP30583489
申请日：1989-11-24
申请人： HITACHI CABLE
发明人： YAMAZAKI TAKAHIRO , KIKUCHI HITOSHI
IPC分类号： E04H9/16 , E04H12/20 , F28D15/02 , G01N25/00
摘要： PURPOSE:To easily, speedily, and securely make a measurement by cooling a part of the heat radiation part of the on-ground part of the heat pipe, detecting temperature variation between the parts above and below the cooled part, and deciding whether the heat pipe is in normal operation or not. CONSTITUTION:A cooler 11 is fitted at a proper position of the on-ground heat radiation part of a heat wire 1A and thermocouples 4a and 4b are fitted at points P and Q above and below it; and a power generator 5 is put in opera tion to place a cooling device 10 in operation and then put the cooler 11 in a cooling state, thereby cooling the fitting position for the heat wire 1A. The temperature before the cooling of the cooler 11 is compared with the tempera ture after the cooling and it is decided that the heat pipe operates normally when the temperature at the point Q below the cooling part falls after the cooling. Further, it is easily decided that the operation is defective unless there is variation in temperature between the points P and Q. Consequently, the mea surement is completed in a short time and the carrying-in operation of a heavy equipment, etc., can be minimized.

58. 发明专利

JPH02277892A PRODUCTION OF HEAT WIRE 失效
公开(公告)号：JPH02277892A
公开(公告)日：1990-11-14
申请号：JP9425689
申请日：1989-04-13
申请人： HITACHI CABLE
发明人： KIKUCHI HITOSHI , KONO HIDEO , SHIMOJIMA KIYOSHI , NIREKI TADASHI , ITO HIROAKI , SAWAHARA TAKU
IPC分类号： E04H12/20 , D07B1/00 , F28D15/02 , H02G7/00
摘要： PURPOSE:To inexpensively provide a heat wire constituted such as to enable to melt snow on the periphery of a supporting wire for a pole to be supported, such as an electric pole, by continuously feeding a long core member comprising heat pipes and dummy members connected to each other into the twisting center of a twisting wire and forming the twisting layer on the outer periphery of the long core member. CONSTITUTION:Heat pipes 1 and dummy members 2 are continuously connected to each other with an adhesive tape 3, etc., to form a long core member, which is wound on a drum and carried into a wire-twisting machine. When a twisting operation is carried out, the long core member comprising the connected heat pipes 1 and dummy members 2 is taken out as such from the drum and continuously fed, simultaneously twisting a twisting wire 7 on the fed long core member to provide the objective heat wire 10. The heat wire 10 is disposed between an electric pole 11 and an anchor 12 in a tense state to form a supporting wire, and one end of the formed composite heat wire is embedded in the ground to form a heat-collecting section 10a and the other end is used as a heat-releasing section 10b to melt the snow on the periphery of the heat-treating section 10b, thereby cutting the transmission of the sedimentation power of the snow to the supporting wire to prevent the breakage of the supporting wire.

59. 发明专利

JPH01286709A METHOD OF EXTENDING AERIAL WIRE AND SNATCH BLOCK 失效
公开(公告)号：JPH01286709A
公开(公告)日：1989-11-17
申请号：JP11457588
申请日：1988-05-13
申请人： HITACHI CABLE
发明人： TERADA SHIGERU , KIKUCHI HITOSHI
IPC分类号： H02G1/02
摘要： PURPOSE:To avoid the local repetition bents of an aerial wire due to longitudinal movements and to prevent the aerial wire from accidentally damaging by providing means for so restricting a wire that the wire does not move relatively to a snatch block, and preventing the aerial wire from longitudinally moving by air pressure or the like. CONSTITUTION:A snatch block has a split wire holding piece 3 and can hold an aerial wire and particularly an optical fiber composite aerial ground wire (OPGW) 20 by clamping a bolt 4. There is separately a coupling piece 5 coupled from a snatch block frame 1 to the piece 3 for restricting the OPGW 20 held by the piece 3 with respect to a snatch block to restrict the OPGW 20 with respect to the frame 1. Thus, when the OPGW 20 is laterally fluctuated by air pressure or the like, it can prevent repetitive bents from being applied to a load due to the longitudinally movement of the OPGW 20 on the snatch block.

60. 发明专利

JPS6450705A STRINGING METHOD FOR LONG-SPAN TRANSMISSION LINE 失效
公开(公告)号：JPS6450705A
公开(公告)日：1989-02-27
申请号：JP20578387
申请日：1987-08-19
申请人： HITACHI CABLE
发明人： HOSHINO HIROYUKI , HANAWA MASAO , KIKUCHI HITOSHI
IPC分类号： H02G1/02
摘要： PURPOSE:To improve safety, workability and profitability by arranging large snatch blocks on both sides of a steel tower to be strung, engaging an electric wire with one large snatch block and a wire for wire extend with the other large snatch block and forming a wire extend loop. CONSTITUTION:When an electric wire 10 is extended between steel towers T1, T2 constructed on both banks at a distance L crossing a channel or a large river, large snatch blocks 1, 1' are disposed respectively at the rears of the steel towers T1, T2. The large snatch block 1 is installed at the rear of the position of approximately half the stringing length L of the electric wire 10 from a fixed shaft 7, the electric wire 10 is interlinked with a snatch block groove in the large snatch block 1, and the electric wire 10 is formed to a U shape. Temporary fixing clamps 5 are contact- bonded with both end sections of the electric wire 10, and connecting wires 7a and extending wires 11 are connected to connecting holes for the clamps 5. Both end sections of the extending wires 11 and the temporary fixing clamps 5 are coupled, and a wire extend loop is formed. The connection of the fixed shaft 7 and the electric wire 10 is released, and the wire extend loop is turned as shown in the arrow by using a wire extend winch 9 while the tension of the whole loop is varied by a block 3, thus extending the electric wire 10.

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