JP4548665B2 - Residual cable pulling device - Google Patents

Residual cable pulling device Download PDF

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JP4548665B2
JP4548665B2 JP2005241418A JP2005241418A JP4548665B2 JP 4548665 B2 JP4548665 B2 JP 4548665B2 JP 2005241418 A JP2005241418 A JP 2005241418A JP 2005241418 A JP2005241418 A JP 2005241418A JP 4548665 B2 JP4548665 B2 JP 4548665B2
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cable
remaining cable
pulling
gripping
gripping tool
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JP2007060766A (en
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信幸 八尋
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二幸削進工業株式会社
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Description

本発明は、たとえばマンホールに連通する管路内に切断されて放置された残置ケーブルに対し、該残置ケーブルの端面と連結して、管路内に存する残置ケーブルを引き抜く残置ケーブル引き抜き装置に関するものである。
The present invention relates to, for example, a residual cable pulling device that pulls out a residual cable existing in a pipeline by connecting to the end surface of the residual cable with respect to a residual cable cut and left in a pipeline communicating with a manhole. is there.

近年、地下にケーブルより少し径の太い複数の管路が埋設して形成され、この管路中には所定の間隔で地下に垂下するマンホールが設けられている。   In recent years, a plurality of conduits that are slightly thicker than cables are buried in the basement, and manholes that hang down underground at predetermined intervals are provided in the conduits.

該マンホールにはその側壁に前記管路端面が露出した状態で露見しており、該管路端面はいわゆるダクト口となって内部管路と連通している。   The manhole is exposed with the pipe end face exposed on the side wall thereof, and the pipe end face serves as a so-called duct port and communicates with the internal pipe.

そしてケーブルは管路内を挿通して前記管路端面（ダクト口）から一旦マンホール内を通り、再び向かい側の管路端面（ダクト口）を介して内部管路内を挿通し敷設されている。   The cable passes through the inside of the pipe line, passes through the manhole from the pipe end face (duct port), and passes through the internal pipe line again through the opposite pipe end face (duct port).

すなわち、このような構成によりマンホール内においては保守者がケーブルの保守管理、増設等の作業を行うことが可能になっている。   In other words, with such a configuration, a maintenance person can perform maintenance work, extension, and other work in the manhole.

ここで、使用されなくなったケーブルは、前記の管路内から簡単に引き抜ける場合は引き抜いて撤去するが、当該引き抜きが困難な場合にはマンホール内で邪魔にならないように切断され、内部管路内に放置される。   Here, a cable that is no longer used is pulled out and removed when it is easily pulled out from the inside of the pipe, but when it is difficult to pull out, the cable is cut out of the manhole so as not to get in the way. Left unattended.

ところで近年、ケーブルの取替えや地下への移行の需要が高まっているが、地面を掘削して新しい管路を敷設する工事はコスト高となる。そこでケーブルが放置されている既設管路の再利用が求められている。   By the way, in recent years, there is an increasing demand for replacement of cables and shifting to the underground, but the work of excavating the ground and laying new pipes is expensive. Therefore, it is required to reuse existing pipelines where cables are left.

この場合、残置ケーブルの端末が管路端面からマンホール内に長い余長を有する場合は、ケーブル端末をたとえば直接引き抜くことができ、もって容易に残置ケーブルを撤去することができる。   In this case, when the terminal of the remaining cable has a long extra length in the manhole from the pipe end face, the cable terminal can be directly pulled out, for example, and the remaining cable can be easily removed.

しかし、ケーブル端末の余長は、マンホール自体がスペース的に余裕がないことも相まって、残置ケーブルがダクト口付近や管路側に入り込んで切断されていたり、端末の余長が殆どないことがしばしば生じている。   However, the extra length of the cable terminal is often accompanied by the fact that the manhole itself does not have enough space, and the remaining cable has been cut near the duct opening or on the duct side, or there is almost no extra length of the terminal. ing.

そして、このような状況にあってもケーブル端末を確実に把持して引き抜くことが必要となっている。   Even in such a situation, it is necessary to securely grasp and pull out the cable terminal.

しかして、前記課題を解決するために従来では特開２００４−１４７４７８号公報に記載されたような発明が一般に知られている。   In order to solve the above problems, an invention as described in Japanese Patent Application Laid-Open No. 2004-147478 is generally known.

しかしながら、前記の発明ではケーブル端末の余長が殆どないときに、ケーブル端末を引き抜き機に確実に連結して引き抜くことが難しいとの課題があった。   However, in the above invention, when there is almost no extra length of the cable terminal, there is a problem that it is difficult to reliably connect the cable terminal to the drawing machine and pull it out.

特開２００４−１４７４７８号公報JP 2004-147478 A

かくして、本発明はかかる課題に対処すべく創案されたものであって、管路端面より残置ケーブル端末の余長が殆ど露出しておらず、もってその部分を掴んで引き抜きが困難なときにおいても、前記残置ケーブル端末と引き抜き機とを確実に連結することができ、もって残置ケーブルを確実に引き抜くことができる残置ケーブル先端面と引き抜き治具との連結構造を提供することを目的とするものである。
Thus, the present invention has been devised to cope with such a problem, and the remaining length of the remaining cable terminal is hardly exposed from the end surface of the pipe line, so that it is difficult to pull out by grasping that portion. An object of the present invention is to provide a connection structure between a remaining cable distal end surface and an extraction jig, which can reliably connect the remaining cable terminal and the pulling machine, and can reliably pull the remaining cable. is there.

本発明による残置ケーブル引き抜き装置は、
マンホールの側壁から先端面が露出するケーブル管路内の残置ケーブルを引き抜く引き抜き装置であり、
前記残置ケーブルの先端面に、該残置ケーブルの軸方向に向かってねじ込まれる複数本の連結ねじと、前記複数本の連結ねじにより前記残置ケーブルの先端面に固定される連結ホルダと、前記連結ホルダに連結される引き抜き装置の引き抜き機本体と、を有し、
前記連結ねじには、ねじ基端面の開口から軸方向へ向かう中空部が設けられると共に、該中空部とねじ外周側面側開口部とを連通する挿通孔が設けられ、連結ねじと残置ケーブルとを連結固定する接着剤が、中空部と挿通孔を通過し、ねじ外周側面開口部から送出されて、前記引き抜き機本体と残置ケーブルとが連結されてなり、
前記引き抜き機本体は、前記連結ホルダと連結される引き抜き杆と、該引き抜き杆と連結される第１引張体と、該第１引張体を把持する第２把持具と、該第２把持具を引っ張る第２引張体と、前記連結ホルダと交換されて前記引き抜き杆の先端に連結される第１把持具と、
を備え、
前記第１引張体は、前記引き抜き杆を介して第１把持具とも連結可能とされ、前記引き抜き杆と共に、前記残置ケーブルの軸方向に、前記引き抜き杆を駆動する第１駆動シリンダとして構成され、
前記第２把持具は、略方形枠体状をなす把持部本体と該把持部本体の上方に設けられた挟持片とを有し、該挟持片が下方へスライドし、該挟持片と該把持部本体とにより前記第１引張体あるいは残置ケーブルの後端部を上下から挟んで把持する構成とされ、
前記第２引張体は、前記残置ケーブルの軸方向に駆動する第２駆動シリンダを有し、前記第２把持具を前記残置ケーブルの軸方向に引っ張る構成とされ、
前記第１把持具は、略方形枠体状に形成された把持部本体と該把持部本体内に挿入される残置ケーブル先端部を上方より押圧して挟みこむ挟持片とにより形成されてなり、
前記残置ケーブルの先端面にねじ込まれた連結ねじ、該連結ねじに連結された連結ホルダ、該連結ホルダに連結された引き抜き杆、該引き抜き杆に連結され、前記第２把持具で把持された第１引張体により残置ケーブル先端部が把持できる程度まで、前記残置ケーブルが引き抜かれた後、前記引き抜き杆から連結ホルダを外して、引き抜き杆先端に前記第１把持具を取り付け、当該引き抜き杆後端に連結された第１引張体は第２把持具での把持状態とされ、
前記第１把持具で前記引き抜かれた残置ケーブル先端部を挟持して前記第１引張体により引っ張ると共に、第２引張体によっても残置ケーブルを挟持した第１引張体を引っ張り可能に構成し、
前記第２把持具から、前記第１把持具が引き抜き杆を介して連結された第１引張体を外し、残置ケーブルを前記第２把持具内に挿通させて把持し、残置ケーブルを引っ張れるストロークまで引っ張った後、第２把持具を拡開して、前記第２引張体の位置を初期の状態に戻し、再び残置ケーブルを把持して引っ張り可能に構成した、
ことを特徴とするものである。
The remaining cable pulling device according to the present invention is:
It is a pulling device that pulls out the remaining cable in the cable conduit where the end face is exposed from the side wall of the manhole.
A plurality of connection screws screwed into the distal end surface of the remaining cable in the axial direction of the remaining cable; a connection holder fixed to the distal end surface of the remaining cable by the plurality of connection screws; and the connection holder A drawing machine main body of a drawing device coupled to
The connection screw is provided with a hollow portion extending in the axial direction from the opening of the screw base end surface, and an insertion hole for connecting the hollow portion and the screw outer peripheral side opening is provided, and the connection screw and the remaining cable are connected to each other. The adhesive to be connected and fixed passes through the hollow portion and the insertion hole, is sent out from the screw outer peripheral side opening, and the puller body and the remaining cable are connected,
The puller body includes a pulling rod connected to the connection holder, a first tension body connected to the pulling rod, a second gripping tool that grips the first tension body, and the second gripping tool. A second pulling body that pulls; a first gripper that is exchanged with the coupling holder and coupled to the tip of the pulling bar;
With
The first tension body can be connected to the first gripper via the extraction rod, and is configured as a first drive cylinder that drives the extraction rod along with the extraction rod in the axial direction of the remaining cable,
The second gripping tool has a gripping part main body having a substantially rectangular frame shape and a gripping piece provided above the gripping part main body, the gripping piece slides downward, and the gripping piece and the gripping It is configured to sandwich and hold the rear end portion of the first tension body or the remaining cable from above and below by the body part,
The second tension body has a second drive cylinder that drives in the axial direction of the residual cable, and is configured to pull the second gripping tool in the axial direction of the residual cable,
The first gripping tool is formed by a gripping part main body formed in a substantially rectangular frame shape and a clamping piece that presses and sandwiches a distal end portion of a remaining cable inserted into the gripping part main body from above.
A connecting screw screwed into the distal end surface of the remaining cable, a connecting holder connected to the connecting screw, a pulling rod connected to the connecting holder, a first screw connected to the pulling rod and gripped by the second gripping tool After the remaining cable is pulled out to the extent that the remaining cable tip can be gripped by one pulling body, the connection holder is detached from the pulling rod , the first gripping tool is attached to the leading end of the pulling rod, and the trailing end of the pulling rod The first tension body connected to the second gripper is held by the second gripping tool,
Together pulled by the first tension body by sandwiching a leaving cable tip is withdrawn the in the first gripper, also possible to configure pulling the first tension body which sandwiches leaving cable by a second tension body,
From the second gripping tool, remove the first tension body to which the first gripping tool is connected via a pulling rod , insert the remaining cable into the second gripping tool, hold it, and pull the remaining cable. After pulling, the second gripping tool is expanded, the position of the second tension body is returned to the initial state, and the remaining cable is gripped again and configured to be pulled.
It is characterized by this.

本発明によるケーブルの引き抜き装置によれば、管路端面より残置ケーブル端末の余長が殆ど露出しておらず、もってその部分を掴んで引き抜きが困難なときにおいて、当該残置ケーブル端末と引き抜き装置とを迅速、確実に連結することができ、もって管路内部に残置された残置ケーブルを確実にかつ速やかに引き抜くことができるとの優れた効果を奏する。
According to the cable pulling device according to the present invention, when the remaining length of the remaining cable terminal is hardly exposed from the pipe end face, and when it is difficult to pull the remaining cable terminal, the remaining cable terminal and the pulling device Can be quickly and reliably connected, and thus the remaining cable left inside the pipe line can be reliably and quickly pulled out.

以下、本発明を実施するための最良の形態を図に基づいて説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

図において、符号１はマンホールを示す。該マンホール１は例えば略長方体状の空間を有して形成されており、その空間長手方向に対向する側壁２、２には、地中に埋設された複数個の管路端面３３（ダクト口）が外部側に露見している。 そして内部の管路３内には残置ケーブル４が内設されており、前記複数個の管路端面３３からは、前記残置ケーブル４の先端面のみが露出する状態とされている。   In the figure, reference numeral 1 denotes a manhole. The manhole 1 is formed with, for example, a substantially rectangular space, and a plurality of pipe end faces 33 (ducts) embedded in the ground are formed on the side walls 2 and 2 facing the space in the longitudinal direction. Mouth) is exposed to the outside. The remaining cable 4 is provided in the internal conduit 3, and only the distal end surface of the remaining cable 4 is exposed from the plurality of conduit end surfaces 33.

ところで、マンホール１内には前記の残置ケーブル４を引き抜くための引き抜き装置３６が設置される。   By the way, an extraction device 36 for extracting the remaining cable 4 is installed in the manhole 1.

ここで、符号５は引き抜き機本体を示す。該引き抜き機本体５は前記マンホール１の側壁２に形成された管路端面３３（ダクト口）から露出する残置ケーブル４の先端部を引き抜く機能を有するものである。   Here, the code | symbol 5 shows a drawing machine main body. The puller main body 5 has a function of pulling out the distal end portion of the remaining cable 4 exposed from the pipe end face 33 (duct port) formed on the side wall 2 of the manhole 1.

そして、当該引き抜き機本体５の構成の一例を挙げると、該引き抜き機本体５は、前記残置ケーブル４の先端部端面に、該端面から軸方向に向かってねじ込まれる、あるいはたたき込まれる複数本の連結ねじ４０と連結される構成がとられている（図３および図４参照）。   And when an example of the structure of the said extractor main body 5 is given, this extractor main body 5 will be screwed or knocked toward the front-end | tip part end surface of the said remaining cable 4 from this end surface toward an axial direction. The structure connected with the connection screw 40 is taken (refer FIG. 3 and FIG. 4).

そして、前記複数本の連結ねじ４０、ここでは通常５本の連結ねじ４０によって残置ケーブル４の先端部端面にたとえばキャップ状をなす連結ホルダ４１が被せられて固定される。符号４９は前記連結ホルダ４１を固定するために前記連結ねじ４０の頭部側にねじ込まれるナットを示す（図７参照）。   Then, a connection holder 41 having a cap shape, for example, is put on and fixed to the end face of the remaining cable 4 by the plurality of connection screws 40, usually five connection screws 40 in this case. Reference numeral 49 denotes a nut that is screwed into the head side of the connection screw 40 in order to fix the connection holder 41 (see FIG. 7).

また前記連結ホルダ４１の上端面側には前記連結ねじ４０の取り付け孔５１とは別に雌ねじ４２が複数個穿設されており、該雌ねじ４２に前記引き抜き機本体５の引き抜き杆４３側ホルダ５０側から接続用のボルトがねじ込まれて連結される。これによって引き抜き機本体５と残置ケーブル４とが連結されるものとなる。   In addition to the attachment hole 51 of the connection screw 40, a plurality of female screws 42 are formed on the upper end surface side of the connection holder 41, and the female screw 42 is connected to the holder 50 side of the extraction rod 43 side of the extraction machine body 5. The connecting bolt is screwed in and connected. As a result, the puller body 5 and the remaining cable 4 are connected.

しかし、引き抜き機本体５と連結ホルダ４１との連結は上記の手段に何ら限定されるものではない。   However, the connection between the drawing machine body 5 and the connection holder 41 is not limited to the above-described means.

ところで、本発明では前記の連結ねじ４０に大きな特徴を有している。   By the way, in the present invention, the connecting screw 40 has a great feature.

すなわち、前記連結ねじ４０には、ねじ基端面に開口４４が設けられ、該開口４４から連結ねじ４０の軸方向へ向かって延出する中空部４５が設けられている。   That is, the connection screw 40 is provided with an opening 44 at the screw base end surface and a hollow portion 45 extending from the opening 44 in the axial direction of the connection screw 40.

さらに、該中空部４５とねじ外周側面側開口部４６とを連通する挿通孔４７も設けられている（図５、図６参照）。   Further, an insertion hole 47 is also provided for communicating the hollow portion 45 and the screw outer peripheral side opening 46 (see FIGS. 5 and 6).

そして、図３および図４から理解されるように、当該連結ねじ４０を残置ケーブル４の先端部端面にねじ込み、あるいは打ち込んだ後に、これら連結ねじ４０が残置ケーブル４の先端部端面から引き抜けないよう、ねじ基端面の開口４４から中空部４５に向かって接着剤が注入される。   As understood from FIGS. 3 and 4, after the connecting screw 40 is screwed or driven into the end face of the remaining cable 4, the connecting screw 40 cannot be pulled out from the end face of the remaining cable 4. As described above, the adhesive is injected from the opening 44 on the screw base end surface toward the hollow portion 45.

すると、注入された接着剤は前記中空部４５および挿通孔４７を通り、ねじ外周側面側開口部４６から、残置ケーブル４と連結ねじ４０との間に排出され、両者を強固に接着するものとなる。   Then, the injected adhesive passes through the hollow portion 45 and the insertion hole 47, is discharged from the screw outer peripheral side opening 46 between the remaining cable 4 and the connecting screw 40, and firmly bonds both. Become.

しかして、両者が強固に接着された後、前記引き抜き機本体５を作動させ、残置ケーブル４を管路端面３３から引き出す。   Thus, after the two are firmly bonded, the puller body 5 is operated, and the remaining cable 4 is pulled out from the pipe end face 33.

そして、管路端面３３から残置ケーブル４の先端部を掴める程度まで引き出した後、前記引き抜き杆４３と連結ホルダ４１との接続をはずし、該引き抜き杆４３に残置ケーブル先端部把持用の第１把持具６を取り付けることとなる（図２参照）。   Then, after pulling out from the pipe end surface 33 to the extent that the distal end portion of the remaining cable 4 can be gripped, the connection between the extraction rod 43 and the connection holder 41 is removed, and the first grip for gripping the distal end portion of the remaining cable is connected to the extraction rod 43. The tool 6 will be attached (refer FIG. 2).

ここで、交換して取り付ける第１把持具６の構成につき説明する。
図２などから理解されるように、第１把持具６は、略方形枠状に形成された把持部本体１５と該把持部本体１５内に挿入される残置ケーブル先端部を上方より押圧して挟みこむ挟持片１６とにより形成されている。 Here, the configuration of the first gripping tool 6 that is exchanged and attached will be described.
As understood from FIG. 2 and the like, the first gripping tool 6 presses the gripping part main body 15 formed in a substantially rectangular frame shape and the distal end portion of the remaining cable inserted into the gripping part main body 15 from above. It is formed by a sandwiching piece 16 to be sandwiched.

例えば、この挟持片１６は油圧シリンダ等で構成され、把持部本体１５内に挿入された残置ケーブル４先端部を上方より強固にプレスし、保持部本体１５の底面と共に前記残置ケーブル先端部を上下方向から挟持するものとしてある。   For example, the clamping piece 16 is configured by a hydraulic cylinder or the like, and firmly presses the distal end portion of the remaining cable 4 inserted into the gripping portion main body 15 from above, and moves the distal end portion of the remaining cable up and down together with the bottom surface of the holding portion main body 15. It is supposed to be sandwiched from the direction.

尚、把持部本体１５の後端側には第１把持具６を、引き抜き杆４３を介してマンホール１の前方方向へ引っ張る第１引張体７が連結されている。   A first tension body 7 that pulls the first gripping tool 6 in the forward direction of the manhole 1 through the pulling bar 43 is connected to the rear end side of the gripping section main body 15.

そして、当該第１引張体７の後部は、第２把持具８の方形枠体状をなす把持部本体１８の内部に挿入され、上方に設けられた挟持片１９が下方へスライドし、該挟持片１９と把持部本体１８とにより上下から挟んで挟持される構成となっており、その状態から、第１引張体７を水平方向へ引っ張る構成となっている。   Then, the rear portion of the first tension body 7 is inserted into the grip portion main body 18 having a rectangular frame shape of the second gripping tool 8, and the gripping piece 19 provided at the upper side slides downward to hold the grip It is configured to be sandwiched and held by the piece 19 and the grip portion main body 18 from above and below, and from this state, the first tension member 7 is pulled in the horizontal direction.

なお、前記の引き抜き機本体５は、第１把持具６と、該第１把持具６を略水平方向、すなわち残置ケーブル４の軸方向へ引っ張る第１引張体７と、この第１引張体７の後端部を把持する第２把持具８と、該第２把持具８を略水平方向、すなわち残置ケーブル４の軸方向へ引っ張る機能を有する第２引張体９とを有して構成されている。   The puller body 5 includes a first gripping tool 6, a first tension body 7 that pulls the first gripping tool 6 in a substantially horizontal direction, that is, the axial direction of the remaining cable 4, and the first tension body 7. A second gripping tool 8 that grips the rear end of the second cable, and a second tension member 9 that has a function of pulling the second gripping tool 8 in a substantially horizontal direction, that is, in the axial direction of the remaining cable 4. Yes.

また、符号１０はマンホール１内で突っ張り配置された複数本の突っ張り杆を示し、前記引き抜き機本体５はこの複数の突っ張り杆１０でマンホール１内に組み立て設置可能とされている。   Reference numeral 10 denotes a plurality of tension rods that are stretched in the manhole 1, and the puller body 5 can be assembled and installed in the manhole 1 with the plurality of tension rods 10.

当該複数本の突っ張り杆１０はマンホール１内において、そのマンホール１の長手方向に向かって水平行方向へ一対配される突っ張りパイプ１１，１１と、この突っ張りパイプ１１，１１を短手方向から保持する複数本の補助保持パイプ１２を有して構成されている。   The plurality of tension rods 10 are provided in the manhole 1 as a pair of tension pipes 11 and 11 arranged in the horizontal direction toward the longitudinal direction of the manhole 1 and hold the tension pipes 11 and 11 from the short direction. A plurality of auxiliary holding pipes 12 are provided.

前記突っ張りパイプ１１，１１は、所定の間隔を有して連結バー１３、１３により接続され、その保持強度の向上が図られている。   The tension pipes 11 and 11 are connected to each other by connecting bars 13 and 13 at a predetermined interval to improve the holding strength.

ここで、突っ張りパイプ１１の設置方法は、突っ張りパイプ１１の後端部に設けられた突出具１４の進退操作によって行われる。   Here, the installation method of the tension pipe 11 is performed by an advance / retreat operation of the protrusion 14 provided at the rear end portion of the tension pipe 11.

例えば、該突出具１４は突っ張りパイプ１１内の雌ねじ部へ進退可能な雄ねじを有して構成され、該突出具１４の雄ねじを突っ張りパイプの後端部に設けられた雌ねじ穴にねじ込むことにより進退の長さ調整可能となっているのである。   For example, the projecting tool 14 is configured to have a male screw that can be advanced and retracted into the female threaded portion in the tension pipe 11, and is advanced and retracted by screwing the male screw of the projecting tool 14 into a female screw hole provided in the rear end portion of the tensioning pipe. The length can be adjusted.

そして、マンホール１内の対向する側壁２，２間において、前記突出具１４を軸方向へ伸張させることにより、前記突っ張りパイプ１１、１１をマンホール１内において強固に設置できるのである。   Then, between the opposing side walls 2 and 2 in the manhole 1, the protruding pipes 14 and 11 can be firmly installed in the manhole 1 by extending the protruding tool 14 in the axial direction.

ここで、突っ張り杆１０の設置順序について説明すると、まず一対の突っ張りパイプ１１，１１をマンホール１の長手方向に向かい平行にして配置する。そしてこの突っ張りパイプ１１，１１が離脱しないように突出具１４を回動螺合させて伸張し、マンホール１内に突っ張りパイプ１１に突っ張らせ固定する。   Here, the installation sequence of the tension rods 10 will be described. First, the pair of tension pipes 11 and 11 are arranged parallel to the longitudinal direction of the manhole 1. Then, the projecting tool 14 is rotated and screwed so that the projecting pipes 11 and 11 are not detached and extended, and the projecting pipe 11 is stretched and fixed in the manhole 1.

また、前記突っ張りパイプ１１にはその長手方向両端側において、突っ張りパイプ１１と略直角方向に伸びる補助保持パイプ１２が取り付けられており、該補助保持パイプ１２の後端部にも雌ねじ穴に螺合された突出具１４が設けられている。   Further, an auxiliary holding pipe 12 that extends in a direction substantially perpendicular to the tensile pipe 11 is attached to both ends of the tensile pipe 11 in the longitudinal direction, and the rear end portion of the auxiliary holding pipe 12 is also screwed into the female screw hole. Protruding tool 14 is provided.

この突出具１４を回動させることにより、マンホール１の短手方向に対しても前記突っ張り杆１０を保持固定出来ように構成されている。   By rotating the protrusion 14, the tension rod 10 can be held and fixed in the short direction of the manhole 1.

なお、一対の突っ張りパイプ１１，１１の内部軸方向においても各々駆動シリンダ２０，２０が内設されており、この一対の駆動シリンダ２０，２０の後部は連結杆２１により連結されている。   Drive cylinders 20 and 20 are also provided in the internal axial direction of the pair of thrust pipes 11 and 11, and the rear portions of the pair of drive cylinders 20 and 20 are connected by a connecting rod 21.

そして、この連結された連結杆２１はマンホール１の長手方向に向かい、前記駆動シリンダ２０，２０の揺動により同様に揺動する。しかして、第２把持具８はこの連結杆２１に固定されるものとなる。   The connected connecting rod 21 faces in the longitudinal direction of the manhole 1 and similarly swings due to the swing of the drive cylinders 20 and 20. Thus, the second gripping tool 8 is fixed to the connecting rod 21.

以上において、本発明による引き抜き装置３６の使用状態につき説明する。   The use state of the drawing device 36 according to the present invention will be described above.

図から理解されるように、残置ケーブル４の先端部端面には連結ねじ４０および連結ホルダ４１を介して引き抜き杆４３に連結され、残置ケーブル４の先端部がマンホール１内で把持できる程度まで引っ張り出される。   As can be understood from the drawing, the end face of the remaining cable 4 is connected to the pulling bar 43 via a connecting screw 40 and a connection holder 41, and is pulled to such an extent that the end of the remaining cable 4 can be gripped in the manhole 1. Is issued.

ついで、引き抜き杆４３から連結ホルダ４１をはずした後、引き抜き杆４３に第１把持具６を取り付ける。   Next, after removing the connection holder 41 from the extraction rod 43, the first gripping tool 6 is attached to the extraction rod 43.

しかして、残置ケーブル４の先端部は、この第１把持具６により挟持される。第１把持具６は引き抜き杆４３、第１引張体７、第２把持具８、第２引張体９と連結されるものとなり、第２把持具８は前述のように連結杆２１に取り付けられており、もって第１把持具６、引き抜き杆４３、第１引張体７、第２把持具８は第２引張体９（一対の駆動シリンダ２０，２０）によりマンホール１の長手方向に揺動可能とされている。   Thus, the distal end portion of the remaining cable 4 is clamped by the first gripping tool 6. The first gripping tool 6 is connected to the pulling bar 43, the first tension body 7, the second gripping tool 8, and the second tension body 9, and the second gripping tool 8 is attached to the connection bar 21 as described above. Accordingly, the first gripping tool 6, the pulling rod 43, the first tension body 7, and the second gripping tool 8 can be swung in the longitudinal direction of the manhole 1 by the second tension body 9 (the pair of drive cylinders 20 and 20). It is said that.

まず、残置ケーブル４の先端部を第１把持具６により上下に押圧して挟持する。その状態から、第１引張体７である第１駆動シリンダを駆動させ、マンホール１の長手方向後側へ引っ張る。   First, the distal end portion of the remaining cable 4 is pressed up and down by the first gripping tool 6 and sandwiched. From this state, the first drive cylinder which is the first tension body 7 is driven and pulled to the rear side in the longitudinal direction of the manhole 1.

前記第１駆動シリンダで構成される第１引張体７では約１５０ストロークほど引っ張ることが出来、これにより残置ケーブル４を管路３壁面から縁切りすることが出来る。   The first tension body 7 constituted by the first drive cylinder can be pulled by about 150 strokes, whereby the remaining cable 4 can be cut off from the wall surface of the conduit 3.

ついで、第２駆動シリンダ（一対の駆動シリンダ２０、２０）で構成された第２引張体９を駆動させ、さらにマンホール１の長手方向後側へ約４００ストロークほど引っ張ることが出来る。   Next, the second tension member 9 composed of the second drive cylinder (the pair of drive cylinders 20, 20) can be driven and further pulled about 400 strokes to the rear side in the longitudinal direction of the manhole 1.

すなわち、残置ケーブル４は第１引張体により約１５０ストロークほど、第２引張体により約４００ストロークほど引っ張られる。   That is, the remaining cable 4 is pulled about 150 strokes by the first tension body and about 400 strokes by the second tension body.

従って、管路３の途中で残置させることなく残置ケーブル４をスムーズに引き抜くことができる。   Therefore, the remaining cable 4 can be smoothly pulled out without being left in the middle of the pipeline 3.

さらに管路３内に残置ケーブル４が存在するときには、第１把持具６と第１引張体７とをはずして、引き抜いた残置ケーブル４を第２把持具８の中に挿通させる。そして、第２把持具８で挟み込み、第２引張体９を駆動して引っ張る。   Furthermore, when the remaining cable 4 exists in the pipe line 3, the first gripping tool 6 and the first tension body 7 are removed, and the pulled-out remaining cable 4 is inserted into the second gripping tool 8. And it is pinched with the 2nd holding tool 8, and the 2nd tension body 9 is driven and pulled.

第２引張体９で引っ張れるストロークまで引っ張った後は、前記第２把持具８での挟み込みを止めて拡開する。   After pulling up to a stroke that can be pulled by the second tension body 9, the pinching by the second gripping tool 8 is stopped and it is expanded.

そして、第２引張体９を揺動して初期の状態に戻し、そこで第２把持具８で再び残置ケーブル４を挟み、第２引張体９を駆動して引っ張るのである。   Then, the second tension body 9 is swung to return to the initial state, where the remaining cable 4 is sandwiched again by the second gripping tool 8, and the second tension body 9 is driven and pulled.

しかして、この一連の操作を連続して行うことも出来る。
Thus, this series of operations can be performed continuously.

本発明の概略構成を説明する概略構成説明図である。It is a schematic structure explanatory drawing explaining the schematic structure of this invention. 本発明が適用された引き抜き装置の構成を説明する説明図である。It is explanatory drawing explaining the structure of the drawing apparatus to which this invention was applied. 本発明による連結ねじの構成を示す説明図（その１）である。It is explanatory drawing (the 1) which shows the structure of the connection screw by this invention. 本発明による連結ねじの構成を示す説明図（その２）である。It is explanatory drawing (the 2) which shows the structure of the connection screw by this invention. 本発明による連結ねじの構成を示す説明図（その３）である。It is explanatory drawing (the 3) which shows the structure of the connection screw by this invention. 本発明による連結ねじの構成を示す説明図（その４）である。It is explanatory drawing (the 4) which shows the structure of the connection screw by this invention. 本発明による連結構造を説明する説明図である。It is explanatory drawing explaining the connection structure by this invention. 従来例を説明する説明図である。It is explanatory drawing explaining a prior art example.

１ マンホール
２ 側壁
３ 管路
４ 残置ケーブル
５ 引き抜き機本体
６ 第１把持具
７ 第１引張体
８ 第２把持具
９ 第２引張体
１０ 突っ張り杆
１１ 突っ張りパイプ
１２ 補助突っ張りパイプ
１３ 連結バー
１４ 突出具
１５ 把持部本体
１６ 挟持片
１８ 把持部本体
１９ 挟持片
２１ 連結杆
３３ 管路端面
３６ 引き抜き装置
４０ 連結ねじ
４１ 連結ホルダ
４２ 雌ねじ
４３ 引き抜き杆
４４ ねじ基端面の開口
４５ 中空部
４６ ねじ外周側面
４７ 挿通孔
４９ ナット
５０ 引き抜き杆側ホルダ
５１ 取り付け孔 DESCRIPTION OF SYMBOLS 1 Manhole 2 Side wall 3 Pipe line 4 Remaining cable 5 Puller main body 6 1st gripping tool 7 1st tension body 8 2nd gripping tool 9 2nd tension body 10 Strut rod 11 Stretch pipe 12 Auxiliary stretch pipe 13 Connecting bar 14 Projection tool 15 Gripping unit body 16 Clamping piece 18 Gripping unit body
19 Clamping piece
21 Connecting rod 33 Pipe end surface 36 Pulling device 40 Connecting screw 41 Connecting holder 42 Female screw 43 Pulling rod 44 Screw base end surface opening 45 Hollow portion 46 Screw outer peripheral surface 47 Insertion hole
49 Nut
50 Pull-out side holder 51 Mounting hole

Claims (1)

マンホールの側壁から先端面が露出するケーブル管路内の残置ケーブルを引き抜く引き抜き装置であり、
前記残置ケーブルの先端面に、該残置ケーブルの軸方向に向かってねじ込まれる複数本の連結ねじと、
前記複数本の連結ねじにより前記残置ケーブルの先端面に固定される連結ホルダと、前記連結ホルダに連結される引き抜き装置の引き抜き機本体と、を有し、
前記連結ねじには、ねじ基端面の開口から軸方向へ向かう中空部が設けられると共に、該中空部とねじ外周側面側開口部とを連通する挿通孔が設けられ、連結ねじと残置ケーブルとを連結固定する接着剤が、中空部と挿通孔を通過し、ねじ外周側面開口部から送出されて、前記引き抜き機本体と残置ケーブルとが連結されてなり、
前記引き抜き機本体は、前記連結ホルダと連結される引き抜き杆と、該引き抜き杆と連結される第１引張体と、該第１引張体を把持する第２把持具と、該第２把持具を引っ張る第２引張体と、前記連結ホルダと交換されて前記引き抜き杆の先端に連結される第１把持具と、
を備え、
前記第１引張体は、前記引き抜き杆を介して第１把持具とも連結可能とされ、前記引き抜き杆と共に、前記残置ケーブルの軸方向に、前記引き抜き杆を駆動する第１駆動シリンダとして構成され、
前記第２把持具は、略方形枠体状をなす把持部本体と該把持部本体の上方に設けられた挟持片とを有し、該挟持片が下方へスライドし、該挟持片と該把持部本体とにより前記第１引張体あるいは残置ケーブルの後端部を上下から挟んで把持する構成とされ、
前記第２引張体は、前記残置ケーブルの軸方向に駆動する第２駆動シリンダを有し、前記第２把持具を前記残置ケーブルの軸方向に引っ張る構成とされ、
前記第１把持具は、略方形枠体状に形成された把持部本体と該把持部本体内に挿入される残置ケーブル先端部を上方より押圧して挟みこむ挟持片とにより形成されてなり、
前記残置ケーブルの先端面にねじ込まれた連結ねじ、該連結ねじに連結された連結ホルダ、該連結ホルダに連結された引き抜き杆、該引き抜き杆に連結され、前記第２把持具で把持された第１引張体により残置ケーブル先端部が把持できる程度まで、前記残置ケーブルが引き抜かれた後、前記引き抜き杆から連結ホルダを外して、引き抜き杆先端に前記第１把持具を取り付け、当該引き抜き杆後端に連結された第１引張体は第２把持具での把持状態とされ、
前記第１把持具で前記引き抜かれた残置ケーブル先端部を挟持して前記第１引張体により引っ張ると共に、第２引張体によっても残置ケーブルを挟持した第１引張体を引っ張り可能に構成し、
前記第２把持具から、前記第１把持具が引き抜き杆を介して連結された第１引張体を外し、残置ケーブルを前記第２把持具内に挿通させて把持し、残置ケーブルを引っ張れるストロークまで引っ張った後、第２把持具を拡開して、前記第２引張体の位置を初期の状態に戻し、再び残置ケーブルを把持して引っ張り可能に構成した、
ことを特徴とした残置ケーブル引き抜き装置。 It is a pulling device that pulls out the remaining cable in the cable conduit where the end face is exposed from the side wall of the manhole.
A plurality of connecting screws to be screwed into the distal end surface of the remaining cable toward the axial direction of the remaining cable;
A connection holder fixed to the distal end surface of the remaining cable by the plurality of connection screws, and a puller body of a pulling device connected to the connection holder,
The connection screw is provided with a hollow portion extending in the axial direction from the opening of the screw base end surface, and an insertion hole for connecting the hollow portion and the screw outer peripheral side opening is provided, and the connection screw and the remaining cable are connected to each other. The adhesive to be connected and fixed passes through the hollow portion and the insertion hole, is sent out from the screw outer peripheral side opening, and the puller body and the remaining cable are connected,
The puller body includes a pulling rod connected to the connection holder, a first tension body connected to the pulling rod, a second gripping tool that grips the first tension body, and the second gripping tool. A second pulling body that pulls; a first gripper that is exchanged with the coupling holder and coupled to the tip of the pulling bar;
With
The first tension body can be connected to the first gripper via the extraction rod, and is configured as a first drive cylinder that drives the extraction rod along with the extraction rod in the axial direction of the remaining cable,
The second gripping tool has a gripping part main body having a substantially rectangular frame shape and a gripping piece provided above the gripping part main body, the gripping piece slides downward, and the gripping piece and the gripping It is configured to sandwich and hold the rear end portion of the first tension body or the remaining cable from above and below by the body part,
The second tension body has a second drive cylinder that drives in the axial direction of the residual cable, and is configured to pull the second gripping tool in the axial direction of the residual cable,
The first gripping tool is formed by a gripping part main body formed in a substantially rectangular frame shape and a clamping piece that presses and sandwiches a distal end portion of a remaining cable inserted into the gripping part main body from above.
A connecting screw screwed into the distal end surface of the remaining cable, a connecting holder connected to the connecting screw, a pulling rod connected to the connecting holder, a first screw connected to the pulling rod and gripped by the second gripping tool After the remaining cable is pulled out to the extent that the remaining cable tip can be gripped by one pulling body, the connection holder is detached from the pulling rod , the first gripping tool is attached to the leading end of the pulling rod, and the trailing end of the pulling rod The first tension body connected to the second gripper is held by the second gripping tool,
Together pulled by the first tension body by sandwiching a leaving cable tip is withdrawn the in the first gripper, also possible to configure pulling the first tension body which sandwiches leaving cable by a second tension body,
From the second gripping tool, remove the first tension body to which the first gripping tool is connected via a pulling rod , insert the remaining cable into the second gripping tool, hold it, and pull the remaining cable. After pulling, the second gripping tool is expanded, the position of the second tension body is returned to the initial state, and the remaining cable is gripped again and configured to be pulled.
A remaining cable drawing device characterized by that.
JP2005241418A 2005-08-23 2005-08-23 Residual cable pulling device Expired - Fee Related JP4548665B2 (en)

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KR102153695B1 (en) * 2020-04-03 2020-09-09 주식회사 웅부기술단 Underground distribution cable connection mechanism with various functions
KR102153679B1 (en) * 2020-04-03 2020-09-09 주식회사 웅부기술단 Hanger device for supporting underground distribution lines

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0823616A (en) * 1994-07-06 1996-01-23 Hakko Co Ltd Remaining cable removing device
JPH09233634A (en) * 1996-02-21 1997-09-05 Airec Giken Kk Method of removing cable left in field

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0823616A (en) * 1994-07-06 1996-01-23 Hakko Co Ltd Remaining cable removing device
JPH09233634A (en) * 1996-02-21 1997-09-05 Airec Giken Kk Method of removing cable left in field

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