JP6954753B2 - Tube lifting device - Google Patents

Tube lifting device Download PDF

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JP6954753B2
JP6954753B2 JP2017056001A JP2017056001A JP6954753B2 JP 6954753 B2 JP6954753 B2 JP 6954753B2 JP 2017056001 A JP2017056001 A JP 2017056001A JP 2017056001 A JP2017056001 A JP 2017056001A JP 6954753 B2 JP6954753 B2 JP 6954753B2
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pipe
new pipe
new
arc
sheath
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JP2018159408A (en
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健吾 橋本
健吾 橋本
吉田　義徳
義徳 吉田
冨田　直岐
直岐 冨田
颯二郎 魚津
颯二郎 魚津
下保　哲二
哲二 下保
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Kurimoto Ltd
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Kurimoto Ltd
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Description

この発明は、上水道、ガス、下水道等に用いる流体輸送用配管を、既設のさや管内に配設する工法に用いられ、さや管内に配設する新管を走行用台車に載せてそのさや管内に搬入し、所定の場所において、走行用台車を取り外す際等に使用される管持ち上げ装置に関するものである。 The present invention is used in a construction method in which fluid transportation pipes used for water supply, gas, sewerage, etc. are arranged in an existing sheath pipe, and a new pipe arranged in the sheath pipe is placed on a traveling carriage and placed in the sheath pipe. It relates to a pipe lifting device used when carrying in and removing a traveling carriage at a predetermined place.

ダクタイル鋳鉄管等の各種流体輸送用配管を地中に埋設する工法として、推進工法やシールド工法等によって新設された管をさや管（鞘管）とし、その内部に、ダクタイル鋳鉄管等の新しい管（以下、単に「新管」という。）を配設する工法が採用される場合がある。また、既に供用されている既設管をさや管として、その内部に口径の小さい新管を挿入して管路を更新する工法が採用される場合もある。 As a method of burying various fluid transportation pipes such as ductile cast iron pipes in the ground, pipes newly installed by the propulsion method or shield method are used as sheath pipes (sheath pipes), and new pipes such as ductile cast iron pipes are inside. (Hereinafter, simply referred to as "new pipe") may be adopted. In some cases, an existing pipe that is already in service is used as a sheath pipe, and a new pipe having a small diameter is inserted into the sheath pipe to renew the pipe line.

この種の一工法を図９に示し、この工法は、地中に埋設されたさや管Ｐ’内の所定の配設場所に新管Ｐを運搬し、先行きの新管Ｐの受口２に後行きの新管（持込管）Ｐの挿し口１を順々に接続して管路を構築する。
その新管Ｐの運搬は、新管Ｐに走行用台車（運搬台車）３が取り付けられ、走行用台車３は新管Ｐの底を支える台枠３ｂと、その台枠３ｂに回転自在な車輪３ａを有しており、その車輪３ａのレールＲ上の転動により、新管Ｐがさや管Ｐ’内を走行する。このため、電動作業車４による牽引や推進により新管Ｐはさや管Ｐ’内を走行して、所定の配設箇所へ運搬される。図中、５は走行用台車３と電動作業車４及び台車間を連結する連結装置、６は新管Ｐの心出し用油圧ジャッキ、Ｍは作業員である（特許文献１段落００１７〜同００２１、図１、２参照）。
新管Ｐが所定の配設箇所に運搬された後、走行用台車３を取り外す際は、その新管Ｐを一時持ち上げる必要がある。このため、さや管Ｐ’内において管持ち上げ装置が用いられる。 One construction method of this type is shown in FIG. 9, in which the new pipe P is transported to a predetermined arrangement place in the sheath pipe P'buried in the ground and used as the socket 2 of the new pipe P in the future. A pipeline is constructed by connecting the insertion ports 1 of the new pipe (carry-in pipe) P to the rear in order.
For the transportation of the new pipe P, a traveling trolley (transporting trolley) 3 is attached to the new pipe P, and the traveling trolley 3 has an underframe 3b that supports the bottom of the new pipe P and rotatable wheels on the underframe 3b. It has 3a, and the new pipe P runs in the sheath pipe P'by rolling on the rail R of the wheel 3a. Therefore, the new pipe P travels in the sheath pipe P'by being towed or propelled by the electric work vehicle 4, and is transported to a predetermined arrangement location. In the figure, 5 is a connecting device for connecting the traveling carriage 3, the electric work platform 4 and the carriage, 6 is a hydraulic jack for centering the new pipe P, and M is a worker (Patent Document 1, paragraphs 0017 to 0021). , See Figures 1 and 2).
When the traveling carriage 3 is removed after the new pipe P has been transported to a predetermined arrangement location, it is necessary to temporarily lift the new pipe P. Therefore, a pipe lifting device is used in the sheath pipe P'.

管持ち上げ装置Ａとして、図９、図１０に示すように、鋼管やコンクリート管（ヒューム管）等の内面にリブが無いさや管Ｐ’にあっては、そのさや管Ｐ’の内面間に架け渡される水平方向のベース部材４０と、そのベース部材４０に設けられる新管Ｐの上下径方向のねじジャッキ４１と、そのねじジャッキ４１により前記さや管Ｐ’の内面（天井）に押し当てられる吊下げベース４２と、その吊下げベース４２から新管Ｐの前記上下径方向の下端側に導かれるチェーン、ロープ等の線状体４３と、その線状体４３を巻き取り・巻き戻しするレバーホイスト（レバーブロック：登録商標）４４と、その線状体４３の下端を新管Ｐの端縁（端面周縁）に固定するクランプ４５を有するものがある。 As a pipe lifting device A, as shown in FIGS. 9 and 10, in the case of a sheath pipe P'without ribs on the inner surface of a steel pipe, a concrete pipe (Hume pipe), etc., it is hung between the inner surfaces of the sheath pipe P'. The horizontal base member 40 to be passed, the screw jack 41 in the vertical radial direction of the new pipe P provided on the base member 40, and the suspension pressed against the inner surface (ceiling) of the sheath pipe P'by the screw jack 41. The lowering base 42, the linear body 43 such as a chain or rope guided from the hanging base 42 to the lower end side of the new pipe P in the vertical radial direction, and the lever hoist for winding and rewinding the linear body 43. Some have a (lever block: registered trademark) 44 and a clamp 45 for fixing the lower end of the linear body 43 to the end edge (end face peripheral edge) of the new pipe P.

この管持ち上げ装置Ａは、さや管Ｐ’内において、先行する新管Ｐの受口２に後続の新管Ｐの挿し口１を挿入して仮接続された状態において、図９及び図１０に示すように、まず、さや管Ｐ’の内面間にベース部材４０を水平方向に架け渡し、そのベース部材４０の中程にねじジャッキ４１を固定し、そのねじジャッキ４１によってさや管Ｐ’の内上面（天井面）に吊下げベース４２を押し当てて、ベース部材４０及び吊下げベース４２等をさや管Ｐ’に固定する。 In the sheath pipe P', the pipe lifting device A is temporarily connected by inserting the insertion port 1 of the succeeding new pipe P into the receiving port 2 of the preceding new pipe P, as shown in FIGS. 9 and 10. As shown, first, the base member 40 is horizontally bridged between the inner surfaces of the sheath pipe P', the screw jack 41 is fixed in the middle of the base member 40, and the inside of the sheath pipe P'is fixed by the screw jack 41. The hanging base 42 is pressed against the upper surface (ceiling surface) to fix the base member 40, the hanging base 42, and the like to the sheath pipe P'.

つぎに、新管Ｐの端部（受口２の端部）の下方両側対称位置にクランプ４５を固定し、そのクランプ４５からレバーホイスト４４を介在した線状体４３を吊下げベース４２に係止する。
この状態で、レバーホイスト４４によって線状体４３を巻き上げると、ベース部材４０及び吊下げベース４２に対して新管Ｐが上昇して走行用台車３から離れる。なお、レバーホイスト４４は、周知なものであって、ブロック本体に対してレバーを回動させることによってチェーン（線状体４３）を繰り出し（巻き出し）又は巻き取る（巻き上げる）。 Next, the clamp 45 is fixed at a symmetrical position on both sides below the end of the new pipe P (the end of the socket 2), and the linear body 43 with the lever hoist 44 interposed therebetween is engaged with the suspension base 42. Stop.
In this state, when the linear body 43 is wound up by the lever hoist 44, the new pipe P rises with respect to the base member 40 and the hanging base 42 and separates from the traveling carriage 3. The lever hoist 44 is a well-known one, and the chain (linear body 43) is unwound (unwound) or unwound (wound) by rotating the lever with respect to the block main body.

新管Ｐが持ち上がれば、従来と同様にして、新管Ｐの下方から走行用台車３を引き出し、走行用台車３が新管Ｐの下から離脱して所定の位置に到達すれば、再度、レバーホイスト４４を操作して、さや管Ｐ’の底の所定の高さに新管Ｐを受け台を介在して載置し、作業を終了する。
この後、クランプ４５等による管端の把持を止め、つづいて持ち上げ装置Ａを解体し、つぎの新管Ｐの接続工程に移行する。 When the new pipe P is lifted, the traveling carriage 3 is pulled out from below the new pipe P in the same manner as before, and when the traveling carriage 3 separates from under the new pipe P and reaches a predetermined position, it is again. , The lever hoist 44 is operated to place the new pipe P at a predetermined height at the bottom of the sheath pipe P'with the new pipe P interposed therebetween, and the work is completed.
After that, the gripping of the pipe end by the clamp 45 or the like is stopped, and then the lifting device A is disassembled, and the process proceeds to the next step of connecting the new pipe P.

管持ち上げ装置Ａの他例として、図１１に示すように、さや管Ｐ’が、その内面にリブｒを有するセグメントにあっては、ベース部材４０と、ねじジャッキ４１と、吊下げベース４２に代えて、さや管Ｐ’の内面上部の左右対称位置のリブｒにシャコ万力等のクランプ４６を固定したものがある。
このクランプ４６と新管Ｐの下部の両クランプ４５とをレバーホイスト４４を介設した線状体４３で連結し、レバーホイスト４４の作動によってさや管Ｐ’に対し新管Ｐを上昇させて、その持ち上げを行う。その新管Ｐの持ち上げ状態において、同様に、走行用台車３等を引き抜く。 As another example of the pipe lifting device A, as shown in FIG. 11, in the segment where the sheath pipe P'has a rib r on the inner surface thereof, the base member 40, the screw jack 41, and the hanging base 42 Instead, there is a sheath tube P'in which a clamp 46 such as a mantis shrimp is fixed to a rib r at a symmetrical position on the upper part of the inner surface.
The clamp 46 and both clamps 45 at the lower part of the new pipe P are connected by a linear body 43 having a lever hoist 44 interposed therebetween, and the new pipe P is raised with respect to the sheath pipe P'by the operation of the lever hoist 44. Do that lift. In the lifted state of the new pipe P, the traveling carriage 3 and the like are similarly pulled out.

特開２０１６−２２３５９９号公報Japanese Unexamined Patent Publication No. 2016-2235999

前記従来の管持ち上げ装置Ａは、新管Ｐをクランプ４５で挟持しており、その挟持によって管内面が損傷する場合があった。管の内面は塗装が施された流体の流通面であるため、その面が損傷するのは好ましくない。
また、さや管Ｐ’への線状体４３の支持構造が、ベース部材４０と、ねじジャッキ４１と、吊下げベース４２であったり、リブｒに固定のクランプ４６であったりと、さや管Ｐ’の内面構造で異なり、その構造の違いによって別の管持ち上げ装置Ａを用意する必要があった。
さらに、部品点数も多く、管持ち上げ装置Ａの取り付け作業や解体作業に手間と時間を費やしている。 In the conventional pipe lifting device A, the new pipe P is clamped by the clamp 45, and the pinching may damage the inner surface of the pipe. Since the inner surface of the pipe is a flow surface of the painted fluid, it is not preferable that the surface is damaged.
Further, the supporting structure of the linear body 43 to the sheath tube P'is a base member 40, a screw jack 41, a hanging base 42, a clamp 46 fixed to the rib r, and the sheath tube P. It was different in the inner surface structure of', and it was necessary to prepare another pipe lifting device A due to the difference in the structure.
Further, the number of parts is large, and labor and time are spent on the installation work and the disassembly work of the pipe lifting device A.

この発明は、以上の実状の下、他の新規な構成で新管を持ち上げるようにすることを課題とする。 An object of the present invention is to lift a new pipe with another novel configuration under the above circumstances.

前記課題を達成するため、この発明は、新管を、その下側外周面に沿った円弧状部材で持ち上げるようにしたのである。
円弧状部材で持ち上げれば、新管の内面は勿論のこと、外面も損傷し難く、また、安定する。 In order to achieve the above object, the present invention is to lift the new pipe with an arcuate member along the lower outer peripheral surface thereof.
If it is lifted by an arc-shaped member, not only the inner surface of the new pipe but also the outer surface is not easily damaged and is stable.

この発明の具体的構成としては、新管をさや管内で走行させるために用いる走行用台車を前記新管から取り外す際に、その新管を持ち上げる管持ち上げ装置において、前記さや管の内面間に架け渡されるベース部材と、前記ベース部材の両端部に設けた上下方向の持ち上げ手段と、新管の外周面に沿わせる円弧状部材と、を有し、前記新管の外周面に沿わせた円弧状部材の両端部を前記両持ち上げ手段に支持してその持ち上げ手段によってそれぞれ引き上げて持ち上げ、その持ち上げによって、円弧状部材を介して新管を持ち上げる構成を採用したのである。 As a specific configuration of the present invention, in a pipe lifting device that lifts the new pipe when the traveling carriage used for running the new pipe in the sheath pipe is removed from the new pipe, the pipe is hung between the inner surfaces of the sheath pipe. A circle having a passed base member, vertical lifting means provided at both ends of the base member, and an arc-shaped member along the outer peripheral surface of the new pipe. lift pulled Thus each of which lifting means both end portions of the arcuate member to support the two lifting means, by lifting them, it had adopted a structure for lifting a new pipe through an arcuate member.

この構成において、前記円弧状部材は、新管の下側外周面に沿わせる円弧状部材と、新管の上側外周面に沿わせた円弧状部材からなり、下側外周面に沿わせた円弧状部材と上側外周面に沿わせた円弧状部材とで新管を挟み、その両円弧状部材の両端部を前記両持ち上げ手段によってそれぞれ持ち上げ、その持ち上げによって、両円弧状部材を介して新管を持ち上げるようにすれば、新管を上下の円弧状部材で挟持するため、その管持ち上げがより安定する。 In this configuration, the arc-shaped member is composed of an arc-shaped member along the lower outer peripheral surface of the new pipe and an arc-shaped member along the upper outer peripheral surface of the new pipe, and is a circle along the lower outer peripheral surface. A new pipe is sandwiched between an arc-shaped member and an arc-shaped member along the upper outer peripheral surface, both ends of the both arc-shaped members are lifted by the two lifting means, and the new pipe is lifted via both arc-shaped members. If the pipe is lifted, the new pipe is sandwiched between the upper and lower arc-shaped members, so that the pipe is lifted more stably.

この発明は、以上のように、円弧状部材によって新管を持ち上げるようにしたので、新管を損傷させることなく、安定して持ち上げることができる。 In the present invention, as described above, the new pipe is lifted by the arcuate member, so that the new pipe can be lifted stably without being damaged.

この発明に係る管持ち上げ装置の一実施形態の縦断面図Longitudinal sectional view of an embodiment of the pipe lifting device according to the present invention. 同実施形態の右側面図Right side view of the same embodiment 同実施形態のベース部材の一例の平面図Top view of an example of the base member of the same embodiment 同ベース部材の他例を示し、（ａ）は平面図、（ｂ）は正面図Other examples of the base member are shown, (a) is a plan view, and (b) is a front view. 同実施形態の持ち上げ手段である爪ジャッキを示し、（ａ）はその一例の正面図、（ｂ）は同作用図A claw jack which is a lifting means of the same embodiment is shown, (a) is a front view of an example thereof, and (b) is a view of the same action. 同実施形態の円弧状部材を示し、（ａ）は上側円弧状部材の平面図、（ｂ）は同正面図、（ｃ）は下側円弧状部材の平面図、（ｄ）は同正面図The arc-shaped member of the same embodiment is shown, (a) is a plan view of the upper arc-shaped member, (b) is a front view of the same, (c) is a plan view of the lower arc-shaped member, and (d) is a front view of the same. この発明に係る管持ち上げ装置の他の実施形態の右側面図Right side view of another embodiment of the pipe lifting device according to the present invention. 円弧状部材の他例の正面図Front view of another example of arcuate member この発明に係る管持ち上げ装置のさらに他の各実施形態の右側面図Right side view of still another embodiment of the pipe lifting device according to the present invention. 従来の管持ち上げ装置の一例を利用した走行用台車の引き抜き方法の説明用概略縦断面図Schematic vertical sectional view for explaining a method of pulling out a traveling carriage using an example of a conventional pipe lifting device. （ａ）は図９の要部拡大図、（ｂ）は同切断右側面図(A) is an enlarged view of the main part of FIG. 9, and (b) is a right side view of the same cut. 従来の管持ち上げ装置の他例の切断右側面図Cutting right side view of another example of the conventional pipe lifting device

この発明に係る管持ち上げ装置の一実施形態を図１〜図５に示し、この実施形態は、図９に示した従来と同様に、地中に埋設されたさや管Ｐ’内に新管Ｐを配設するために、その新管Ｐを走行用台車３に載せてさや管Ｐ’内の所定の配設場所に運搬した後、走行用台車３を新管Ｐの下から引き抜く際、新管Ｐを持ち上げるために用いる管持ち上げ装置１０である。さや管Ｐ’は、鋼管、コンクリート管（ヒューム管）、シールド管（トンネル）などが採用され、新管Ｐには、コンクリート管、ダクタイル鋳鉄管などが採用される。 An embodiment of the pipe lifting device according to the present invention is shown in FIGS. 1 to 5, and this embodiment is the same as the conventional one shown in FIG. When the new pipe P is placed on the traveling trolley 3 and transported to a predetermined arrangement place in the sheath pipe P', and then the traveling trolley 3 is pulled out from under the new pipe P, a new pipe P is used. It is a pipe lifting device 10 used for lifting a pipe P. Steel pipes, concrete pipes (Hume pipes), shield pipes (tunnels) and the like are adopted as the sheath pipe P', and concrete pipes, ductile cast iron pipes and the like are adopted as the new pipe P.

新管Ｐは、内面が塗装流通面となった受口２に挿し口１を挿入して継ぎ合わせる継手構造であり、さや管Ｐ’内に持ち込まれた後、先行きの新管Ｐの受口２に後行きの新管Ｐの挿し口１を順々に接続して管路を構築する。
なお、新管Ｐ同士の継手部の形態は、管路の用途や仕様に応じて適宜選択される。例えば、挿し口１の先端に突起、受口２の内面にロックリングがそれぞれ設けられて、ゴム輪等を介在した状態で挿し口１を受口２に挿し込んだ後、押し輪によってゴム輪を挿し口１と受口２との間の間隙に押し込んでシールした構造を採用することができる。 The new pipe P has a joint structure in which the insertion port 1 is inserted into the receiving port 2 whose inner surface is the painted distribution surface and joined, and after being brought into the sheath pipe P', the receiving port of the new pipe P in the future A pipeline is constructed by connecting the insertion port 1 of the new pipe P to the 2 in order.
The form of the joint portion between the new pipes P is appropriately selected according to the application and specifications of the pipe line. For example, a protrusion is provided at the tip of the insertion port 1 and a lock ring is provided on the inner surface of the receiving port 2, and the insertion port 1 is inserted into the receiving port 2 with a rubber ring or the like interposed therebetween. It is possible to adopt a structure in which the rubber is pushed into the gap between the insertion port 1 and the receiving port 2 to seal the rubber.

この発明に係る管持ち上げ装置１０は、図１及び図２に示すように、さや管Ｐ’の内面間に架け渡される水平棒状のベース部材（反力部材）１１と、そのベース部材１１の両端部に設けた上下方向の持ち上げ手段２０と、新管Ｐの下側及び上側外周面に沿わせる円弧状（円弧状）部材３０と、を有する。 As shown in FIGS. 1 and 2, the pipe lifting device 10 according to the present invention includes a horizontal rod-shaped base member (reaction member) 11 bridged between the inner surfaces of the sheath pipe P'and both ends of the base member 11. It has a vertical lifting means 20 provided in the portion, and an arc-shaped (arc-shaped) member 30 along the lower and upper outer peripheral surfaces of the new pipe P.

ベース部材１１は、図３Ａに示すように、両端に当て部材１２を有するターンバックル１３からなったり、図３Ｂに示すように、そのターンバックル１３に代えて油圧ジャッキ１４としたりしたものである。ターンバックル式のベース部材１１はナット１３ａを回すことによって両当て部材１２、１２の間が伸縮する。油圧ジャッキ式のベース部材１１は、ハンドル１４ｃの操作によって油圧シリンダ１４ａのロッド１４ｂを伸縮することによって両当て部材１２、１２の間が伸縮する。 As shown in FIG. 3A, the base member 11 is composed of a turnbuckle 13 having contact members 12 at both ends, or as shown in FIG. 3B, a hydraulic jack 14 is used instead of the turnbuckle 13. The turnbuckle type base member 11 expands and contracts between the two contact members 12 by turning the nut 13a. The hydraulic jack type base member 11 expands and contracts between the two contact members 12 and 12 by expanding and contracting the rod 14b of the hydraulic cylinder 14a by operating the handle 14c.

持ち上げ手段２０は、この実施形態では爪ジャッキからなり、図４に示すように、ベース板２１に油圧シリンダ２２を介して逆Ｌ字状の爪２３が昇降可能に設けられており、ハンドル２４の上下操作（矢印方向）により油圧シリンダ２２によって爪２３が昇降する。油圧式でなくても、ねじ式とすることができる。図中、２５は持ち運び用取手である。
ベース板２１の下面には、Ｌ字状の取り付け部材２７が固定され、この部材２７内にベース部材１１を嵌めてボルト２８を締め込むことによって、この爪ジャッキ２０をベース部材１１に固定する。 In this embodiment, the lifting means 20 includes a claw jack, and as shown in FIG. 4, an inverted L-shaped claw 23 is provided on the base plate 21 via a hydraulic cylinder 22 so as to be able to move up and down. The claw 23 is moved up and down by the hydraulic cylinder 22 by the up and down operation (in the direction of the arrow). Even if it is not a hydraulic type, it can be a screw type. In the figure, 25 is a carrying handle.
An L-shaped mounting member 27 is fixed to the lower surface of the base plate 21, and the claw jack 20 is fixed to the base member 11 by fitting the base member 11 into the member 27 and tightening the bolt 28.

円弧状部材３０は、図５に示すように、上側円弧状部材３０ａと、下側円弧状部材３０ｂとからなり、上側円弧状部材３０ａの両端の突片３１の孔３２に、下側円弧状部材３０ｂの両端の突片３１のピン３３を嵌めてナット止めして、上下の円弧状部材３０ａ、３０ｂを円状とする。その円状の内面は新管Ｐの外周面に沿う大きさとなる。 As shown in FIG. 5, the arcuate member 30 is composed of an upper arcuate member 30a and a lower arcuate member 30b, and has a lower arcuate shape in the holes 32 of the projecting pieces 31 at both ends of the upper arcuate member 30a. The pins 33 of the projecting pieces 31 at both ends of the member 30b are fitted and nut-fastened to form the upper and lower arcuate members 30a and 30b into a circular shape. The circular inner surface has a size along the outer peripheral surface of the new pipe P.

この実施形態は以上の構成であり、この実施形態の管持ち上げ装置１０によって、新管Ｐを持ち上げるには、図１、図２に示すように、まず、さや管Ｐ’の水平中心線上もしくはその下方にベース部材１１を架け渡し、両端の当て部材１２をさや管Ｐ‘の内面に押し付けて（突っ張って）ベース部材１１をさや管Ｐ’内に固定する。 This embodiment has the above configuration, and in order to lift the new pipe P by the pipe lifting device 10 of this embodiment, first, as shown in FIGS. 1 and 2, first, on the horizontal center line of the sheath pipe P'or its own. The base member 11 is bridged downward, and the contact members 12 at both ends are pressed (stretched) against the inner surface of the sheath tube P'to fix the base member 11 in the sheath tube P'.

つぎに、そのベース部材１１の両端に爪ジャッキ２０を取り付けるとともに、円弧状部材３０を新管Ｐの外周面に嵌め、その円弧状部材３０の両端の突片３１を爪ジャッキ２０の爪２３で支持する。
その状態で、図４（ｂ）に示すように、爪ジャッキ２０の爪２３を上昇させると、図２鎖線状態から実線に示すように、円弧状部材３０によって新管Ｐの端部が引き上げられてその内面の塗装流通面を損傷することなく持ち上がる。このとき、爪ジャッキ２０の爪２３に円弧状部材３０の突片３１をクランプ、ロープ、紐等によって固定することができる。 Next, the claw jacks 20 are attached to both ends of the base member 11, the arcuate member 30 is fitted to the outer peripheral surface of the new pipe P, and the projecting pieces 31 at both ends of the arcuate member 30 are attached to the claws 23 of the claw jack 20. To support.
In that state, when the claw 23 of the claw jack 20 is raised as shown in FIG. 4B, the end portion of the new pipe P is pulled up by the arcuate member 30 as shown by the solid line from the chain line state in FIG. lifting without damaging the paint flow surface of the inner surface Te. At this time, the projecting piece 31 of the arcuate member 30 can be fixed to the claw 23 of the claw jack 20 with a clamp, a rope, a string, or the like.

新管Ｐが所要高さ持ち上がれば、従来と同様にして、新管Ｐの下方から走行用台車３を引き出し、走行用台車３が新管Ｐの下から離脱して所定の位置に到達すれば、爪ジャッキ２０の爪２３を下降させて、さや管Ｐ’の底の所定の高さに新管Ｐを受け台を介在して載置する。その後、円弧状部材３０及び爪ジャッキ２０を取り外し、ベース部材１１もさや管Ｐ’から取外し作業を終了する。 If the new pipe P is lifted to the required height, the traveling carriage 3 is pulled out from below the new pipe P, and the traveling carriage 3 separates from under the new pipe P and reaches a predetermined position in the same manner as before. For example, the claw 23 of the claw jack 20 is lowered, and the new pipe P is placed at a predetermined height at the bottom of the sheath pipe P'with the new pipe P interposed therebetween. After that, the arcuate member 30 and the claw jack 20 are removed, and the base member 11 is also removed from the sheath tube P'to complete the work.

図６には、さや管Ｐ’がリブｒを有する場合であって、同様に、ベース部材１１、爪ジャッキ２０、円弧状部材３０をさや管Ｐ’、新管Ｐに取り付けて、新管Ｐをその内面の塗装流通面を損傷することなく持ち上げる。
このように、この発明に係るベース部材１１はさや管Ｐ’の内面形状に関係なく、その内面に固定することができる。 FIG. 6 shows a case where the sheath tube P'has a rib r. Similarly, the base member 11, the claw jack 20, and the arcuate member 30 are attached to the sheath tube P'and the new tube P, and the new tube P is attached. Lift without damaging the paint distribution surface on its inner surface.
As described above, the base member 11 according to the present invention can be fixed to the inner surface of the sheath tube P'regardless of the inner surface shape.

円弧状部材３０（上側又は下側円弧状部材３０ａ、３０ｂ）は、図７（ａ）に示すように、係止片にシャックル３４を介してベルトスリング等の線状体３５を巻き付けた物とすることができる。ベルトスリングはその長さを調整可能であるため、径の異なる新管Ｐの施工毎に、その新管Ｐの径にあった円弧状部材３０を用意する必要が無く、部品点数の削減にもなる。また、管表面を傷つけ難い利点もある。また、図７（ｂ）に示すように、ピン３３にアイナット３３ａをねじ込み、その両アイナット３３ａの間にレバーホイスト４４を取り付けた構成とすることもできる。
このレバーホイスト４４を設けた円弧状部材３０は、図８（ａ）、（ｂ）に示すように、前記レバーホイスト４４の作動によって、線状体３５及び下側円弧状部材３０ｂを新管Ｐに強固に締め付けることができる。また、レバーホイスト４４であれば、その伸縮度合いによって円弧状部材３０の径を調整できるため、径の異なる種々の新管Ｐに対応させることができ、径の異なる新管Ｐの施工毎に、その新管Ｐの径にあった円弧状部材３０を用意する必要が無く、部品点数の削減にもなる。 As shown in FIG. 7A, the arcuate member 30 (upper or lower arcuate member 30a, 30b) is formed by winding a linear body 35 such as a belt sling around a locking piece via a shackle 34. can do. Since the length of the belt sling can be adjusted, it is not necessary to prepare an arcuate member 30 that matches the diameter of the new pipe P for each construction of the new pipe P having a different diameter, and the number of parts can be reduced. Become. It also has the advantage of not easily damaging the surface of the pipe. Further, as shown in FIG. 7B, the eye nut 33a may be screwed into the pin 33, and the lever hoist 44 may be attached between the eye nuts 33a.
As shown in FIGS. 8A and 8B, the arcuate member 30 provided with the lever hoist 44 has a new pipe P for the linear body 35 and the lower arcuate member 30b by the operation of the lever hoist 44. Can be tightened firmly. Further, in the case of the lever hoist 44, since the diameter of the arcuate member 30 can be adjusted according to the degree of expansion and contraction, it is possible to correspond to various new pipes P having different diameters, and each time a new pipe P having a different diameter is constructed, It is not necessary to prepare the arcuate member 30 having the diameter of the new pipe P, and the number of parts can be reduced.

前記実施形態においては、円弧状部材３０を上下の部材３０ａ、３０ｂで構成したが、安全性が担保されれば、下側の部材３０ｂのみでも新管Ｐを持ち上げることができる。
さらに、この実施形態では、新管Ｐの持ち上げを、受口２側で行ったが、さや管Ｐ’内における新管Ｐの向きによっては、挿し口１側で持ち上げることも可能である。
このように、今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。この発明の範囲は、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 In the above embodiment, the arcuate member 30 is composed of the upper and lower members 30a and 30b, but if safety is ensured, the new pipe P can be lifted only by the lower member 30b.
Further, in this embodiment, the new pipe P is lifted on the receiving port 2 side, but it is also possible to lift the new pipe P on the insertion port 1 side depending on the direction of the new pipe P in the sheath pipe P'.
Thus, the embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is indicated by the claims and is intended to include all modifications within the meaning and scope equivalent to the claims.

１ 挿し口
２ 受口
３ 走行用台車（運搬台車）
４ 電動作業車
５ 連結装置
１０ 管持ち上げ装置
１１ ベース部材
１２ 当て部材
１３ ターンバックル
１３ａ ターンバックルの調節ナット
１４ 油圧ジャッキ
１４ａ 油圧シリンダ
１４ｂ 同進退ロッド
２０ 持ち上げ手段（爪ジャッキ）
２１ ベース板
２２ 油圧シリンダ
２３ 持ち上げ爪
２４ ハンドル
２７ 取り付け部材
３０ 円弧状部材
３０ａ 上側円弧状部材
３０ｂ 下側円弧状部材
３１ 円弧状部材の両端突片
Ｐ 新管
Ｐ’さや管
ｒ さや管のリブ 1 Insertion port 2 Receptacle 3 Traveling trolley (transporting trolley)
4 Electric work vehicle 5 Connecting device 10 Pipe lifting device 11 Base member 12 Reliable member 13 Turnbuckle 13a Turnbuckle adjustment nut 14 Hydraulic jack 14a Hydraulic cylinder 14b Simultaneous retreat rod 20 Lifting means (claw jack)
21 Base plate 22 Hydraulic cylinder 23 Lifting claw 24 Handle 27 Mounting member 30 Arc-shaped member 30a Upper arc-shaped member 30b Lower arc-shaped member 31 Both ends of arc-shaped member Projection P New pipe P'Sheath pipe r Rib of sheath pipe

Claims (2)

内面が塗装流通面となった新管（Ｐ）をさや管（Ｐ’）内で走行させるために用いる走行用台車（３）を前記新管（Ｐ）から取り外す際に、その新管（Ｐ）を持ち上げる管持ち上げ装置（１０）であって、
前記さや管（Ｐ’）の内面間に架け渡されるベース部材（１１）と、前記ベース部材（１１）の両端部に設けた上下方向の持ち上げ手段（２０）と、新管（Ｐ）の下側外周面に沿わせる円弧状部材（３０）と、を有し、前記新管（Ｐ）の下側外周面に沿わせた円弧状部材（３０）の両端部を前記両持ち上げ手段（２０）に支持してその持ち上げ手段（２０）によってそれぞれ引き上げて持ち上げ、その持ち上げによって、下側円弧状部材（３０）を介して新管（Ｐ）をその下部でもって持上げて前記塗装流通面を損傷しないように持ち上げる管持ち上げ装置。 When the traveling carriage (3) used to run the new pipe (P) whose inner surface is the painted distribution surface in the sheath pipe (P') is removed from the new pipe (P), the new pipe (P) ) Is a pipe lifting device (10) that lifts
Below the base member (11) spanned between the inner surfaces of the sheath pipe (P'), the vertical lifting means (20) provided at both ends of the base member (11), and the new pipe (P). Both ends of the arc-shaped member (30) having an arc-shaped member (30) along the side outer peripheral surface and along the lower outer peripheral surface of the new pipe (P) are lifted by the both lifting means (20). supporting and to lift pulled Thus each of which lifting means (20), by lifting its damage the paint flow face lift with via the lower arc-shaped member (30) new tubes (P) in its lower part A pipe lifting device that lifts so as not to. 前記円弧状部材（３０）は、前記新管（Ｐ）の下側外周面に沿わせる円弧状部材（３０ｂ）と、新管（Ｐ）の上側外周面に沿わせた円弧状部材（３０ａ）からなり、前記下側外周面に沿わせた円弧状部材（３０ｂ）と上側外周面に沿わせた円弧状部材（３０ａ）とで新管（Ｐ）を挟み、その両円弧状部材（３０ａ、３０ｂ）の両端部を前記両持ち上げ手段（２０）によってそれぞれ持ち上げ、その持ち上げによって、両円弧状部材（３０ａ、３０ｂ）を介して新管（Ｐ）を持ち上げる請求項１に記載の管持ち上げ装置。 The arc-shaped member (30) includes an arc-shaped member (30b) along the lower outer peripheral surface of the new pipe (P) and an arc-shaped member (30a) along the upper outer peripheral surface of the new pipe (P). A new pipe (P) is sandwiched between an arcuate member (30b) along the lower outer peripheral surface and an arcuate member (30a) along the upper outer peripheral surface, and both arcuate members (30a, The pipe lifting device according to claim 1, wherein both ends of 30b) are lifted by the both lifting means (20), and the new pipe (P) is lifted via the both arcuate members (30a, 30b) by the lifting.
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