JP5839973B2 - Device for preventing movement of cable in pipeline - Google Patents

Device for preventing movement of cable in pipeline Download PDF

Info

Publication number
JP5839973B2
JP5839973B2 JP2011270973A JP2011270973A JP5839973B2 JP 5839973 B2 JP5839973 B2 JP 5839973B2 JP 2011270973 A JP2011270973 A JP 2011270973A JP 2011270973 A JP2011270973 A JP 2011270973A JP 5839973 B2 JP5839973 B2 JP 5839973B2
Authority
JP
Japan
Prior art keywords
cable
movement
wedge piece
pipeline
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2011270973A
Other languages
Japanese (ja)
Other versions
JP2013123326A (en
Inventor
貴 五十嵐
貴 五十嵐
康之 海老沼
康之 海老沼
忠則 長山
忠則 長山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tohoku Electric Power Co Inc
Viscas Corp
Original Assignee
Tohoku Electric Power Co Inc
Viscas Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tohoku Electric Power Co Inc, Viscas Corp filed Critical Tohoku Electric Power Co Inc
Priority to JP2011270973A priority Critical patent/JP5839973B2/en
Publication of JP2013123326A publication Critical patent/JP2013123326A/en
Application granted granted Critical
Publication of JP5839973B2 publication Critical patent/JP5839973B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)

Description

本発明は、地中の管路内に布設されたケーブルが地上を走行する車両による地盤振動で車両進行方向に移動する、いわゆるケーブル波乗り移動を防止する装置に関するものである。   The present invention relates to an apparatus for preventing a so-called cable surfing movement in which a cable laid in an underground conduit moves in the vehicle traveling direction due to ground vibration by a vehicle traveling on the ground.

道路下の管路内に布設されたケーブルが路面を走行する車両による地盤振動で車両進行方向に移動する現象は、古くから“波乗り移動現象”として知られている。このケーブル移動に伴い発生する過大な張力で、ケーブルやケーブル接続部が損傷する例が数多くあり、従来からケーブルの波乗り移動防止対策は重要な課題となっている。   A phenomenon in which a cable laid in a pipeline under a road moves in the vehicle traveling direction due to ground vibration by a vehicle traveling on the road surface has long been known as a “surfing movement phenomenon”. There are many examples in which the cable and the cable connection portion are damaged by the excessive tension generated by the movement of the cable, and measures for preventing the wavy movement of the cable have been an important issue.

ケーブルの波乗り移動発生には種々の要因が関与し、その防止対策についても各種の案が考えられるが、既設のケーブル線路に適用できる波乗り移動防止対策は限られている。一般に採用されている方法は、人孔内の管路口でケーブルをクリートによって拘束する方法である。この方法は、人孔内に突き出したケーブルのオフセットの始点となるケーブル直線部分を二つ割り型のクリートで把持し、これを人孔内壁に固定するものである（特許文献１）。   Various factors are involved in the occurrence of undulation movement of the cable, and various proposals can be made for the prevention measures, but there are limited measures for the prevention of undulation movement that can be applied to existing cable lines. A generally adopted method is a method in which a cable is restrained by a cleat at a duct opening in a human hole. In this method, a cable straight line portion that is the starting point of the offset of the cable protruding into the human hole is gripped by a split-type cleat and fixed to the inner wall of the human hole (Patent Document 1).

また、管路口でのケーブル拘束力を大きくするため、クリートではなく、ゴム楔を用いたケーブル拘束装置も提案されている（特許文献２）。   Also, a cable restraint device using a rubber wedge instead of a cleat has been proposed in order to increase the cable restraint force at the duct opening (Patent Document 2).

さらに、管路口ではなく、管路の中で、ケーブルを径方向押圧部材により両側から挟み付けて拘束するケーブル移動防止装置も提案されている（特許文献３）。   Furthermore, a cable movement prevention device has been proposed in which a cable is sandwiched and restrained from both sides by a radial pressing member in a pipe line instead of a pipe opening (Patent Document 3).

実開平４−６４９３３号公報Japanese Utility Model Publication No. 4-64933 特開２００８−１２５２２４号公報JP 2008-125224 A 特開平７−２１２９４８号公報JP-A-7-212948

これまでのケーブル波乗り挙動の解析や波乗り移動再現実験から、波乗り移動の発生力Ｆは次式で算定され、ケーブルにこれ以上の拘束力を与えれば波乗り移動を防止できることが知られている。   From the analysis of the cable surfing behavior and the surfing movement reproduction experiment so far, it is known that the surfing movement generation force F is calculated by the following equation, and that the surfing movement can be prevented by applying more restraining force to the cable.

Ｆ＝αμＷＬ
ここで μ：ケーブル管路間摩擦係数
Ｗ：ケーブル単位長重量
Ｌ：ケーブル布設区間長
α：低減係数（0.3〜0.5） F = αμWL
Where μ: Coefficient of friction between cable pipes
W: Cable unit long weight
L: Cable laying section length
α: Reduction factor (0.3 to 0.5)

従来、波乗り移動が発生しやすい軽量、小サイズのケーブル、例えば導体断面積1000mm2の66kＶ単心ケーブルを管路内に３条俵積み形状で布設する場合、μ＝0.4、Ｗ＝３条×10kg/ｍ＝30 kg/ｍ、Ｌ＝250ｍ程度であり、波乗り移動防止に必要な拘束力Ｆは3000〜5000kgfとなる。これを管路の両端（２つの人孔）で均等に拘束するためには、各管路口で必要とする最大ケーブル拘束力は5000kgf÷2＝2500 kgf、すなわち25kＮとなる。 Conventionally, lightweight surfing movement is likely to occur, the small size of the cable, for example, when laying a 66kV single core cable conductor cross-sectional area 1000 mm 2 in conduit with Article bale stacking shape, mu = 0.4, W = 3 Article × 10 kg / m = 30 kg / m, L = about 250 m, and the restraining force F necessary for preventing surfing movement is 3000 to 5000 kgf. In order to restrain this evenly at both ends (two human holes) of the pipeline, the maximum cable restraint force required at each pipeline opening is 5000 kgf ÷ 2 = 2500 kgf, that is, 25 kN.

クリートでケーブルを拘束する方法では、人孔内でケーブルのオフセットをとる必要上、クリートを設置できるケーブル直線部分の長さは僅かしか得られず、複数のクリートを設置することはできない。また、ケーブル絶縁性能面の制約から、クリートによってケーブルを把持可能な面圧は0.5ＭＰaに限定されるため、人孔内のクリート拘束で得られるケーブル長手方向移動防止力は1〜2kＮ程度に限定される。これに対して通常必要とされる波乗り移動防止力は前述のように25ｋＮ程度は必要であるため、クリート拘束ではケーブルの波乗り移動を確実に防止することは困難である。   In the method of constraining the cable with the cleat, it is necessary to offset the cable in the manhole, so that the length of the straight portion of the cable where the cleat can be installed is obtained only slightly, and a plurality of cleats cannot be installed. In addition, due to restrictions on cable insulation performance, the surface pressure that can grip the cable by cleats is limited to 0.5 MPa, so the cable longitudinal movement prevention force obtained by cleat restraint in the manhole is limited to about 1 to 2 kN Is done. On the other hand, the undulation movement preventing force normally required is about 25 kN as described above, and therefore it is difficult to reliably prevent the undulation movement of the cable with cleat restraint.

また、ケーブルをゴム楔で拘束する装置は、ケーブルの拘束力を大きくすることはできるが、拘束装置の軸線方向の長さが長くなり、人孔内に設置スペースを確保することが困難である。   In addition, the device that restrains the cable with the rubber wedge can increase the restraining force of the cable, but the length of the restraining device in the axial direction becomes long, and it is difficult to secure an installation space in the human hole. .

また、ケーブルを管路の中で径方向押圧部材により挟み付けて拘束する装置は、人孔内の設置スペースが不要となる利点はあるが、径方向押圧部材がネジ式のジャッキのような構成であるため径方向サイズが大きく、しかもこの押圧部材をケーブルの両側に設けているため、ケーブルと管路内壁の間の空間が大きくないと、管路内に設置することが困難である。   In addition, the device that clamps and restrains the cable with the radial pressing member in the pipe line has an advantage that an installation space in the human hole is not required, but the radial pressing member is configured like a screw-type jack. Therefore, since the radial size is large and the pressing members are provided on both sides of the cable, if the space between the cable and the inner wall of the pipe is not large, it is difficult to install in the pipe.

本発明の目的は、人孔内に設置スペースを確保する必要がなく、しかもケーブルと管路内壁の間の空間が狭くても管路内に設置することが可能な管路内ケーブルの移動防止装置を提供することにある。   It is an object of the present invention to prevent movement of an in-pipe cable that can be installed in a pipe line even if the space between the cable and the pipe inner wall is narrow without having to secure an installation space in the manhole. To provide an apparatus.

本発明に係る管路内ケーブルの移動防止装置は、
管路内に布設されたケーブルの上に跨るケーブル押さえ金具と、このケーブル押さえ金具の上に同金具と共に上下方向には移動できるが同金具に対して管路方向には移動できないように設けられた、上面が傾斜面となっている下側楔片と、この下側楔片と管路内天井面との間に管路方向に移動可能に設けられた、下面が前記下側楔片の傾斜面と摺動する傾斜面となっている上側楔片と、を備えた移動防止ユニットを、管路方向に適当な間隔をおいて複数ユニット設け、
さらに各移動防止ユニットの下側楔片を連結する下側連結部材と、各移動防止ユニットの上側楔片を連結する上側連結片と、各移動防止ユニットのうち管路口に最も近い位置にある移動防止ユニットの上側楔片を管路方向に移動させるシャフトとを設け、
前記シャフトで管路口に最も近い位置にある移動防止ユニットの上側楔片を管路口の方へ引き寄せて、前記上側連結部材で連結された全ての上側楔片を一括して管路口の方へ引き寄せることにより、各移動防止ユニットの下側楔片及びケーブル押さえ金具を一括して下方へ押し下げ、これにより前記ケーブルを複数箇所で管路内面に押し付けて拘束するものであってもよい。 An apparatus for preventing movement of a cable in a pipeline according to the present invention is
A cable presser bracket that straddles the cable laid in the pipeline, and can be moved on the cable presser bracket with the bracket in the vertical direction, but not in the pipeline direction with respect to the bracket. A lower wedge piece having an inclined upper surface, and a lower surface provided between the lower wedge piece and the ceiling surface in the duct so as to be movable in the pipeline direction. Provided with a plurality of units with an appropriate interval in the pipeline direction, the movement prevention unit provided with an inclined surface and an upper wedge piece that is an inclined surface that slides,
Further, a lower connecting member that connects the lower wedge piece of each movement prevention unit, an upper connection piece that connects the upper wedge piece of each movement prevention unit, and the movement of each movement prevention unit that is closest to the conduit port a shaft provided to move the upper wedge piece prevention unit in pipe direction,
The upper wedge piece of the movement preventing unit located at the position closest to the pipe opening at the shaft is drawn toward the pipe opening, and all the upper wedge pieces connected by the upper connecting member are drawn together toward the pipe opening. Thus, the lower wedge piece and the cable pressing member of each movement prevention unit may be collectively pushed down, and the cable may be pressed against the inner surface of the pipe line at a plurality of locations to be restrained.

また、本発明に係る管路内ケーブルの移動防止装置において、シャフトはボルトからなり、シャフトにより移動させられる上側楔片は前記ボルトとねじ結合する雌ねじ穴を有しており、シャフトを回転させることにより上側楔片が管路方向へ移動するようになっていることが好ましい。   Further, in the apparatus for preventing movement of an intra-pipe cable according to the present invention, the shaft is made of a bolt, and the upper wedge piece that is moved by the shaft has a female screw hole that is screwed to the bolt, and the shaft is rotated. Therefore, it is preferable that the upper wedge piece is moved in the pipe line direction.

本発明に係るケーブル移動防止装置は、管路内でケーブルを拘束するので人孔内に設置スペースを確保する必要がなく、人孔内のスペースをケーブル接続やオフセット等に有効に活用できる。また、下側楔片に対し上側楔片を摺動させることでケーブルを管路内面に押し付ける構造であるから、機構的に単純で管路径方向サイズを小さくすることができ、ケーブルと管路内壁の間の空間が狭くてもケーブルの移動を確実に防止することができる。さらに、移動防止ユニットを複数ユニット設けることにより、トータルで大きなケーブル拘束力を発揮させることができ、ケーブル移動をより確実に防止することができる。   Since the cable movement preventing apparatus according to the present invention restrains the cable in the pipeline, it is not necessary to secure an installation space in the manhole, and the space in the manhole can be effectively used for cable connection, offset, and the like. Further, since the cable is pressed against the inner surface of the pipe line by sliding the upper wedge piece with respect to the lower wedge piece, the cable and the inner wall of the pipe can be reduced mechanically and the size in the radial direction of the pipe can be reduced. Even if the space between them is narrow, the movement of the cable can be reliably prevented. Furthermore, by providing a plurality of movement preventing units, a large total cable restraining force can be exhibited, and cable movement can be prevented more reliably.

本発明に係る管路内ケーブルの移動防止装置の一参考例を示す（Ａ）は縦断面図、（Ｂ）は（Ａ）のＢ−Ｂ線矢視図、（Ｃ）は（Ａ）のＣ−Ｃ線矢視図。(A) which shows one reference example of the movement prevention apparatus of the cable in a pipeline which concerns on this invention is a longitudinal cross-sectional view, (B) is a BB line arrow view of (A), (C) is (A). CC arrow directional view. 本発明に係る管路内ケーブルの移動防止装置の他の参考例を示す（Ａ）は縦断面図、（Ｂ）は（Ａ）のＢ−Ｂ線矢視図、（Ｃ）は（Ａ）のＣ−Ｃ線矢視図。(A) which shows the other reference example of the movement prevention apparatus of the cable in a pipe line which concerns on this invention is a longitudinal cross-sectional view, (B) is a BB line arrow view of (A), (C) is (A). FIG. 本発明に係る管路内ケーブルの移動防止装置の実施例を示す（Ａ）は縦断面図、（Ｂ）は（Ａ）のＢ−Ｂ線矢視図、（Ｃ）は（Ａ）のＣ−Ｃ線矢視図。(A) which shows the Example of the movement prevention apparatus of the cable in a pipe line which concerns on this invention is a longitudinal cross-sectional view, (B) is a BB arrow line view of (A), (C) is C of (A). -C line arrow directional view.

〔参考例１〕図１は本発明の一参考例を示す。図において、１は地中に埋設された管路、２は管路１内に布設された３条のケーブルである。管路１の端部（図１（Ａ）の右端）は人孔（図示省略）内に開口しており、ここが管路口である。３条のケーブル２は俵積みの状態で布設されている。 Reference Example 1 Figure 1 shows the one exemplary embodiment of the present invention. In the figure, reference numeral 1 is a conduit buried in the ground, and 2 is a three-wire cable laid in the conduit 1. The end of the pipe line 1 (the right end in FIG. 1A) opens into a human hole (not shown), which is a pipe port. The three strip cables 2 are laid in a piled state.

３は管路１内で管路口付近のケーブル２の上に跨る鞍形のケーブル押さえ金具、４はケーブル押さえ金具３の上に設けられた下側楔片である。下側楔片４の上面は管路口に近づくに従い徐々にケーブル２から離れていく傾斜面となっている。下側楔片４の上面の幅方向中央部には管路方向に凹溝４ａが形成され、下側楔片４はこの凹溝４ａの底部を貫通するネジ等によってケーブル押さえ金具３に固定されている。このため下側楔片４はケーブル押さえ金具３と共に上下方向には移動できるがケーブル押さえ金具３に対して管路方向には移動できないようになっている。   Reference numeral 3 denotes a hook-shaped cable pressing metal fitting over the cable 2 in the vicinity of the pipe opening in the pipe 1, and reference numeral 4 denotes a lower wedge piece provided on the cable pressing metal 3. The upper surface of the lower wedge piece 4 is an inclined surface that gradually separates from the cable 2 as it approaches the duct opening. A concave groove 4a is formed in the center of the upper surface of the lower wedge piece 4 in the duct direction, and the lower wedge piece 4 is fixed to the cable pressing metal 3 with a screw or the like that penetrates the bottom of the concave groove 4a. ing. For this reason, the lower wedge piece 4 can move in the vertical direction together with the cable pressing metal fitting 3 but cannot move in the pipe line direction with respect to the cable pressing metal fitting 3.

５は下側楔片４と管路１内の天井面との間に設けられた上側楔片、６は上側楔片５を管路方向に移動させるシャフトである。上側楔片５の下面は前記下側楔片４の傾斜面と摺動する傾斜面となっている。シャフト６は六角形頭部６ａを有するボルトの形態であり、上側楔片５はシャフト６の雄ねじ部とねじ結合する雌ねじ穴を有している。   Reference numeral 5 denotes an upper wedge piece provided between the lower wedge piece 4 and the ceiling surface in the pipe line 1, and 6 denotes a shaft for moving the upper wedge piece 5 in the pipe line direction. The lower surface of the upper wedge piece 5 is an inclined surface that slides with the inclined surface of the lower wedge piece 4. The shaft 6 is in the form of a bolt having a hexagonal head 6 a, and the upper wedge piece 5 has a female screw hole that is screw-engaged with the male screw portion of the shaft 6.

７は管路口に設置された固定板である。固定板７は下側楔片４の端面にネジ等により固定されている。なお固定板７は下側楔片４の端面ではなく管路１の端面に固定されていてもよい。固定板７にはＵ字溝７ａが形成されており、シャフト６はこのＵ字溝７ａを貫通して管路１内に伸びている。これによりシャフト６は頭部６ａが固定板７に引っ掛かって管路１内に引き込まれないようになっており、またＵ字溝７ａに案内されて上下方向に僅かに変位可能である。   Reference numeral 7 denotes a fixed plate installed at the duct opening. The fixing plate 7 is fixed to the end surface of the lower wedge piece 4 with screws or the like. The fixing plate 7 may be fixed to the end surface of the pipe line 1 instead of the end surface of the lower wedge piece 4. A U-shaped groove 7 a is formed in the fixed plate 7, and the shaft 6 extends through the U-shaped groove 7 a into the pipe line 1. As a result, the shaft 6 is prevented from being pulled into the conduit 1 by the head 6a being caught by the fixed plate 7, and can be slightly displaced in the vertical direction by being guided by the U-shaped groove 7a.

また、下側楔片４の両側には、上側楔片５を管路方向に案内するガイド枠８がネジ等により固定されている。   Further, guide frames 8 for guiding the upper wedge piece 5 in the pipe line direction are fixed to both sides of the lower wedge piece 4 with screws or the like.

この装置は以上のような構成であるため、シャフト６を回転させて、上側楔片５を固定板７の方、すなわち、固定板７が固定された下側楔片４の端面が位置する管路口の方へ引き寄せると、下側楔片４及びケーブル押さえ金具３が下方へ押し下げられ、ケーブル２を管路１内面に押し付けて管路方向へ移動しないように拘束することができる。   Since this apparatus has the above-described configuration, the shaft 6 is rotated, and the upper wedge piece 5 is moved toward the fixed plate 7, that is, the tube on which the end surface of the lower wedge piece 4 to which the fixed plate 7 is fixed is located. When pulled toward the roadway, the lower wedge piece 4 and the cable pressing metal 3 are pushed downward, and the cable 2 can be pressed against the inner surface of the pipe 1 so as not to move in the pipe direction.

この装置の設計にあたって必要とする拘束力（Ｆs）は次式にて算定する。   The restraining force (Fs) required for designing this device is calculated by the following equation.

Ｆs＝νＰＳ
ここで ν：ケーブルとケーブル押さえ金具間の摩擦係数
Ｐ：ケーブル押さえ金具で押さえ付けるときの上部ケーブル許容面圧
Ｓ：上部ケーブルとケーブル押さえ金具の接触面積（＝ｄ×θ×ｗ）
ｄ：ケーブル外径
θ：上部ケーブルとケーブル押さえ金具の接触角度（ラジアン）
ｗ：ケーブル押さえ金具の幅（管路方向寸法） Fs = νPS
Where ν: Coefficient of friction between cable and cable clamp
P: Allowable surface pressure of the upper cable when pressing with the cable clamp
S: Contact area between upper cable and cable clamp (= d × θ × w)
d: Cable outer diameter
θ: Contact angle between the upper cable and the cable retainer (radians)
w: Width of cable clamp (dimension in pipe direction)

例えば前述した小サイズのケーブル（導体断面積1000mm2の66kＶ単心ケーブル）の場合、νは実測より1.0、Ｐは従来規格より0.5ＭＰａとし、ｄ＝80mm、θ＝π/6、ｗ＝120mmとして、拘束力（Ｆs）を算出すると次のようになる。 For example, in the case of the above-mentioned small-sized cable (66 kV single-core cable with a conductor cross-sectional area of 1000 mm 2 ), ν is 1.0 from the actual measurement, P is 0.5 MPa from the conventional standard, d = 80 mm, θ = π / 6, w = 120 mm As a result, the restraining force (Fs) is calculated as follows.

Ｆs＝νＰｄθｗ＝1.0×5×8×（π/6）×12＝251kgf＝25.1kＮ   Fs = νPdθw = 1.0 × 5 × 8 × (π / 6) × 12 = 251 kgf = 25.1 kN

これは各管路口で必要とされる拘束力25kＮをほぼ満足する値である。   This is a value that almost satisfies the restraining force of 25 kN required at each pipe opening.

〔参考例２〕管路内ケーブルの移動防止装置は一度設置したら少なくとも10年以上の長期使用に耐え、また突発的に起こり得る過負荷通電時のケーブル熱膨張力にも耐える必要があるため、設計拘束力（Ｆd）は必要拘束力（Ｆs）に安全率（Ｓf）を加味する必要がある。安全率（Ｓf）については４倍程度を考慮すると、Ｆd＝Ｓf・Ｆs＝４Ｆsとなる。 [ Reference Example 2] Since the device for preventing the movement of the cable in the pipeline needs to withstand long-term use for at least 10 years once installed and to withstand the thermal expansion force of the cable when energized suddenly, The design constraint force (Fd) needs to add a safety factor (Sf) to the necessary constraint force (Fs). In consideration of about 4 times the safety factor (Sf), Fd = Sf · Fs = 4Fs.

図２はこの安全率（Ｓf）を考慮した本発明の他の参考例を示す。
図２において図１と同一部分には同一符号を付してある。この参考例は、ケーブル押さえ金具３と、下側楔片４と、上側楔片５と、ガイド枠８とからなる移動防止ユニット９を、管路方向に適当な間隔をおいて複数ユニット設け、ケーブル２を複数箇所（図示の例では４箇所）で拘束するものである。 Figure 2 shows the other exemplary embodiment of the present invention in consideration of the safety factor (Sf).
In FIG. 2, the same parts as those in FIG. This reference example is provided with a plurality of units for preventing movement 9 consisting of a cable pressing bracket 3, a lower wedge piece 4, an upper wedge piece 5, and a guide frame 8 at appropriate intervals in the pipe line direction, The cable 2 is restrained at a plurality of locations (four locations in the illustrated example).

各移動防止ユニット９の下側楔片４は一連続の連結部材１０を介してそれぞれケーブル押さえ金具３に固定されている。各移動防止ユニット９の上側楔片５は一連続のシャフト６とねじ結合しており、シャフト６の回転により一括して管路方向に移動するようになっている。   The lower wedge piece 4 of each movement prevention unit 9 is fixed to the cable pressing metal 3 via a continuous connecting member 10. The upper wedge piece 5 of each movement prevention unit 9 is screw-coupled to the continuous shaft 6, and moves together in the pipeline direction by the rotation of the shaft 6.

この装置は以上のような構成であるため、シャフト６を回転させて、各移動防止ユニット９の上側楔片５を一括して管路口の方へ引き寄せると、各移動防止ユニット９の下側楔片４及びケーブル押さえ金具３が一括して下方へ押し下げられ、これによりケーブル２を複数箇所で管路１内面に押し付けて拘束することができる。このため図１の装置よりも確実にケーブルの移動を防止することができる。   Since this apparatus is configured as described above, when the shaft 6 is rotated and the upper wedge pieces 5 of the respective movement preventing units 9 are collectively pulled toward the duct opening, the lower wedge of each movement preventing unit 9 is obtained. The piece 4 and the cable presser metal fitting 3 are collectively pushed down, whereby the cable 2 can be pressed and restrained against the inner surface of the pipe line 1 at a plurality of locations. For this reason, the movement of the cable can be prevented more reliably than the apparatus of FIG.

〔実施例〕図３は本発明の実施例を示す（請求項１に対応）。図３において図２と同一部分には同一符号を付してある。この実施例も参考例２と同様、ケーブル２を複数箇所で拘束するものである。各移動防止ユニット９の下側楔片４が一連続の連結部材１０（この実施例ではこれが下側連結部材である）を介してそれぞれケーブル押さえ金具３に固定されている点も参考例２と同様である。 [Embodiment] FIG. 3 shows an embodiment of the present invention (corresponding to claim 1 ). In FIG. 3, the same parts as those in FIG. In this embodiment, as in Reference Example 2, the cable 2 is restrained at a plurality of locations. Lower wedge piece 4 the contiguous linking member 10 of each mobile prevention unit 9 (in this example this is the lower connecting member) is also a point that is fixed to the cable retainer member 3 via respective Reference Example 2 It is the same.

この実施例が参考例２と異なる点は、各移動防止ユニット９の上側楔片５が一連続の上側連結部材１１により連結されていて一緒に移動することと、管路口に最も近い位置にある移動防止ユニット９の上側楔片５だけがシャフト６とねじ結合していることである。シャフト６は参考例１と同じボルトの形態である。上側連結部材１１の上面には管路内面との摩擦を増大させるため、横方向に切り込み１２が形成されている。 This embodiment is different from the reference example 2 in that the upper wedge piece 5 of each movement prevention unit 9 is connected by a continuous upper connecting member 11 and moves together, and is in a position closest to the pipe opening. Only the upper wedge piece 5 of the movement preventing unit 9 is screwed to the shaft 6. The shaft 6 is in the same bolt form as in the first reference example. In order to increase the friction with the inner surface of the pipe line, a cut 12 is formed in the lateral direction on the upper surface of the upper connecting member 11.

このような構成でも、シャフト６を回転させることによって、各移動防止ユニット９の上側楔片５を一括して管路口の方へ引き寄せることができ、これにより各移動防止ユニット９の下側楔片４及びケーブル押さえ金具３を一括して下方へ押し下げて、ケーブル２を複数箇所で拘束することができる。   Even in such a configuration, by rotating the shaft 6, the upper wedge pieces 5 of the respective movement preventing units 9 can be drawn together toward the duct opening, whereby the lower wedge pieces of the respective movement preventing units 9 can be drawn. The cable 2 can be restrained at a plurality of locations by pushing down 4 and the cable pressing metal 3 together.

なお、以上の各実施例ではシャフトとしてボルトを用いたが、シャフトとしては、上側楔片に対し回転しないように固定された棒状部材であって、固定板を貫通する部分から先に雄ねじ部を形成したものを用い、その雄ねじ部にねじ結合させたナットを回転させて上側楔片を管路方向に移動させるようにしてもよい。   In each of the above embodiments, a bolt is used as the shaft. However, the shaft is a rod-like member fixed so as not to rotate with respect to the upper wedge piece, and the male screw portion is provided first from the portion penetrating the fixing plate. You may make it move the upper wedge piece to a pipe line direction by rotating the nut screw-coupled to the external thread part using what was formed.

１：管路
２：ケーブル
３：ケーブル押さえ金具
４：下側楔片
５：上側楔片
６：シャフト
７：固定板
８：ガイド枠
９：移動防止ユニット
１０：連結部材（下側連結部材）
１１：上側連結部材
１２：切り込み 1: Pipe line 2: Cable 3: Cable pressing bracket 4: Lower wedge piece 5: Upper wedge piece 6: Shaft 7: Fixing plate 8: Guide frame 9: Movement prevention unit 10: Connecting member (lower connecting member)
11: Upper connecting member 12: notch

Claims (2)

管路内に布設されたケーブルの上に跨るケーブル押さえ金具と、このケーブル押さえ金具の上に同金具と共に上下方向には移動できるが同金具に対して管路方向には移動できないように設けられた、上面が傾斜面となっている下側楔片と、この下側楔片と管路内天井面との間に管路方向に移動可能に設けられた、下面が前記下側楔片の傾斜面と摺動する傾斜面となっている上側楔片と、を備えた移動防止ユニットを、管路方向に適当な間隔をおいて複数ユニット設け、
さらに各移動防止ユニットの下側楔片を連結する下側連結部材と、各移動防止ユニットの上側楔片を連結する上側連結片と、各移動防止ユニットのうち管路口に最も近い位置にある移動防止ユニットの上側楔片を管路方向に移動させるシャフトとを設け、
前記シャフトで管路口に最も近い位置にある移動防止ユニットの上側楔片を管路口の方へ引き寄せて、前記上側連結部材で連結された全ての上側楔片を一括して管路口の方へ引き寄せることにより、各移動防止ユニットの下側楔片及びケーブル押さえ金具を一括して下方へ押し下げ、これにより前記ケーブルを複数箇所で管路内面に押し付けて拘束することを特徴とする管路内ケーブルの移動防止装置。 A cable presser bracket that straddles the cable laid in the pipeline, and can be moved on the cable presser bracket with the bracket in the vertical direction, but not in the pipeline direction with respect to the bracket. A lower wedge piece having an inclined upper surface, and a lower surface provided between the lower wedge piece and the ceiling surface in the duct so as to be movable in the pipeline direction. Provided with a plurality of units with an appropriate interval in the pipeline direction, the movement prevention unit provided with an inclined surface and an upper wedge piece that is an inclined surface that slides,
Further, a lower connecting member that connects the lower wedge piece of each movement prevention unit, an upper connection piece that connects the upper wedge piece of each movement prevention unit, and the movement of each movement prevention unit that is closest to the conduit port a shaft provided to move the upper wedge piece prevention unit in pipe direction,
The upper wedge piece of the movement preventing unit located at the position closest to the pipe opening at the shaft is drawn toward the pipe opening, and all the upper wedge pieces connected by the upper connecting member are drawn together toward the pipe opening. A lower wedge piece and a cable pressing member of each movement preventing unit are collectively pushed downward, thereby pressing and restraining the cable against the inner surface of the pipeline at a plurality of locations. Anti-movement device. シャフトはボルトからなり、シャフトにより移動させられる前記上側楔片は前記ボルトとねじ結合する雌ねじ穴を有しており、シャフトを回転させることにより前記上側楔片が管路方向へ移動するようになっていることを特徴とする請求項１に記載の管路内ケーブルの移動防止装置。 Shaft comprises a bolt, said upper Kusabihen be moved by the shaft so as to have a female screw hole for coupling the bolt and the screw, the upper wedge pieces by rotating the shaft moves the conduit direction The apparatus for preventing movement of an in-pipe cable according to claim 1.
JP2011270973A 2011-12-12 2011-12-12 Device for preventing movement of cable in pipeline Active JP5839973B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011270973A JP5839973B2 (en) 2011-12-12 2011-12-12 Device for preventing movement of cable in pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011270973A JP5839973B2 (en) 2011-12-12 2011-12-12 Device for preventing movement of cable in pipeline

Publications (2)

Publication Number Publication Date
JP2013123326A JP2013123326A (en) 2013-06-20
JP5839973B2 true JP5839973B2 (en) 2016-01-06

Family

ID=48774988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011270973A Active JP5839973B2 (en) 2011-12-12 2011-12-12 Device for preventing movement of cable in pipeline

Country Status (1)

Country Link
JP (1) JP5839973B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255423A (en) * 1988-04-04 1989-10-12 Showa Electric Wire & Cable Co Ltd Fixing of cable laid in along conduit line & fixing device for this method
JP2000086169A (en) * 1998-09-17 2000-03-28 Haruo Nonaka Reduction gear type wedgelike jack device, and reaction force introducing device
JP2013106415A (en) * 2011-11-11 2013-05-30 Chugoku Electric Power Co Inc:The Surfing phenomenon suppression device

Also Published As

Publication number Publication date
JP2013123326A (en) 2013-06-20

Similar Documents

Publication Publication Date Title
JP2008125224A (en) Device for binding and pulling back single core cable
CN203352067U (en) Auxiliary cable-dragging device
JP5839973B2 (en) Device for preventing movement of cable in pipeline
US9903230B2 (en) Device for securing and retaining at least one electrical harness in a turbomachine
KR20090114090A (en) Wedge clamp for fixing steel wire
CN110212460B (en) Traction connection device for superconducting cable
KR101280601B1 (en) A straight type removable anchor head capable of being reassembled
CN205791434U (en) A kind of submarine cable joint armouring wire lays clamping and fixing device
KR20110003503U (en) Installation device for cable
CN204947530U (en) A kind of strain clamp
KR20120035463A (en) Clamping apparatus for wiring cable in underground pipe line
KR100883912B1 (en) Link mechanism for adjusting length of power cable
CN204089142U (en) A kind of mineral cable multicore intermediate connector
KR101213722B1 (en) Communication prefabricated steel pipe pole standing cable construction and installation method
CN214674263U (en) Protection type composite reinforced CM solid-wall cable sheath tube
RU2370623C1 (en) Facility for securing cable to pipeline assembled in well
KR102389971B1 (en) Method for Pulling Power Cable through Long-distance Pipe Line
EP3363954A1 (en) Hole former with gasket locating features for cast manhole structures
US6193216B1 (en) Pulling device for elongated articles
JP7248768B1 (en) Device for suppressing core displacement of cables
CN201365174Y (en) Wire leading and distributing device of motor rotor
JP6238154B2 (en) Cable laying structure for pipeline facilities and seismic fixing fixtures used therefor
CN206572069U (en) A kind of pipeline mounting structures
KR100976168B1 (en) Supporting device for supporting wire easy to extension and teardown of self suppoting type aerial cable
CN217607360U (en) Cable conduit lays protector

Legal Events

Date Code Title Description
RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20141114

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20141128

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20141114

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20141216

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150709

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150721

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150918

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20151013

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20151110

R150 Certificate of patent or registration of utility model

Ref document number: 5839973

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313117

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250