JP2743135B2 - Curved propulsion coupling for small diameter pipes - Google Patents
Curved propulsion coupling for small diameter pipesInfo
- Publication number
- JP2743135B2 JP2743135B2 JP25182792A JP25182792A JP2743135B2 JP 2743135 B2 JP2743135 B2 JP 2743135B2 JP 25182792 A JP25182792 A JP 25182792A JP 25182792 A JP25182792 A JP 25182792A JP 2743135 B2 JP2743135 B2 JP 2743135B2
- Authority
- JP
- Japan
- Prior art keywords
- buried pipe
- propulsion
- curved
- fixed plate
- plastic transmission
- 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.)
- Expired - Lifetime
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、小口径の埋設管を曲線
に推進埋設する曲線推進継輪に関するもので、詳しくは
曲線部において変化する埋設管接続部の開口に追従する
曲線推進継輪に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved propulsion spur for burying a small-diameter buried pipe in a curve, and more particularly to a curve propulsion splice which follows an opening of a buried pipe connection which changes in a curved part. About.
【０００２】[0002]
【従来技術】曲線推進工法は、先端の先導体に装備した
方向修正ジャッキにより、所定の曲率に先導体を偏向さ
せて、後方より押圧することにより曲線を形成しながら
推進を行う。後続する埋設管の曲線保持は、各埋設管の
接続部の左右の目地の開きの差を保持するため、埋設管
壁面の左右２点づつに均等に配置した４点で推進力を付
与する方法が用いられている。目地の保持装置として
は、推進途中に管内より楔状の板材を挿入したり、予め
小さなジャッキを装備しておいて、目地開口分だけジャ
ッキを伸長する装置が用いられる。また、近年、曲線の
追従性を良くする方法として、埋設管接続部センター上
下に塑性伝達材等を設置し、ピン構造と略同様の作用を
させて、推進力を均一に伝達する方法も用いられてい
る。2. Description of the Related Art In the curve propulsion method, a leading conductor is deflected to a predetermined curvature by a direction correcting jack provided on the leading conductor at the tip, and is pushed from the rear to form a curved line. The curve retention of the subsequent buried pipe is a method of applying propulsion at four points evenly arranged at two points on the left and right sides of the wall of the buried pipe in order to maintain the difference in opening between the right and left joints at the connection part of each buried pipe. Is used. As the joint holding device, a device is used in which a wedge-shaped plate is inserted from inside the pipe during propulsion, or a small jack is provided in advance and the jack is extended by the joint opening. In recent years, as a method of improving the followability of a curve, a method of installing a plastic transmission material or the like above and below the center of the buried pipe connection part and making it operate in substantially the same manner as the pin structure to uniformly transmit the propulsion force is also used. Have been.
【０００３】曲線推進継輪としては、通常の推進工法に
使用される筒状の継輪が使用される。そして、曲線推進
が完了すると、曲線部分の埋設管接続部に挿入した楔状
の板ジャッキを撤去し、開口した目地部にモルタル等を
充填して止水が行われる。また、塑性伝達材を用いた工
法では、塑性伝達材は腐食しないので、撤去せずそのま
ま埋設管壁に装着したまま、モルタル等を充填して止水
がおこなわれる。[0003] As a curved propulsion connecting wheel, a cylindrical connecting wheel used in a normal propulsion method is used. When the curve propulsion is completed, the wedge-shaped plate jack inserted into the connection portion of the buried pipe in the curve portion is removed, and the open joint is filled with mortar or the like to stop water. Moreover, in the construction method using the plastic transmission material, the plastic transmission material does not corrode. Therefore, the water is stopped by filling the mortar or the like with the plastic transmission material attached to the buried pipe wall without being removed.
【０００４】[0004]
【発明が解決しようとする課題】上記した従来技術によ
り小口径管の曲線推進を施工する場合、先導体において
は従来のように先導体に装備した方向修正ジャッキによ
り、所定の方向に先導体を偏向させる。後続する埋設管
列の接続部の目地部には、上記したような楔状の板材を
挿入したり、予めジャッキを装備する技術は、人が埋設
管内へ入ることが出来なく、板材の挿入やジャッキの撤
去が出来ないため、小口径管では採用出来ない。このた
め、埋設管接続部の目地部の推進力伝達材としては、腐
食しない塑性伝達材を設置する方式が用いられる。塑性
伝達材の形状としては、推進完了後の目地処理が出来な
いために、埋設管壁全周に装着する方式が用いられる。When a small-diameter pipe is curved and propelled according to the prior art described above, the leading conductor is fixed in a predetermined direction by a direction correcting jack provided on the leading conductor as in the prior art. To deflect. The technique of inserting a wedge-shaped plate material as described above into the joint of the connecting portion of the subsequent buried pipe row or equipping the jack in advance does not allow a person to enter the buried pipe, Can not be used with small diameter pipes because of the inability to remove them. For this reason, a method is used in which a plastic transmission material that does not corrode is installed as the propulsion transmission material at the joint of the buried pipe connection. As the shape of the plastic transmission material, a method of mounting it on the entire circumference of the buried pipe wall is used because joint processing after completion of propulsion cannot be performed.
【０００５】しかし、塑性伝達材自体は、目地材として
止水性に乏しく、さらに曲線部において埋設管接続部の
目地の内外で生じる開口差による追従性に乏しい。この
ため、完全な目地部の止水が行えないため、小口径管の
曲線推進が実施不可能となっているのが現状である。[0005] However, the plastic transmission material itself has poor water stopping properties as a joint material, and further has poor followability due to a difference in an opening generated inside and outside a joint of a buried pipe joint at a curved portion. For this reason, since water cannot be completely stopped at joints, it is impossible at present to carry out curve propulsion of small-diameter pipes.
【０００６】また、塑性伝達材を全周に装着するため
に、曲線の形成を容易にするためのピン構造が形成でき
なくなり、先導体への追随性が悪くなり、計画値にあっ
た曲線の形成も困難になる。In addition, since the plastic transmission material is attached to the entire circumference, a pin structure for facilitating the formation of the curve cannot be formed, and the followability to the leading conductor is deteriorated. Formation is also difficult.
【０００７】本発明は、このような従来技術の問題に鑑
み、小口径管の曲線推進においても埋設管接続部の目地
部の止水を確実に行える小口径管用曲線推進継輪を提供
するものである。The present invention has been made in view of the above-mentioned problems of the prior art, and provides a curved propulsion joint for a small-diameter pipe capable of reliably stopping water at joints of a buried pipe connection even in the case of curvilinear propulsion of a small-diameter pipe. It is.
【０００８】[0008]
【発明の構成】すなわち本発明は、埋設管外径と略同径
で筒状よりなる外殻と、該外殻内面に固着して前方埋設
管壁面に沿うように環設した固定板と、固定板の背面に
固定板幅と略同幅で固着した塑性伝達材と、塑性伝達材
の背面に埋設管壁面と略同幅で推進方向に移動可能に環
設した当板と、固定板と塑性伝達材および当板を包むよ
うに両埋設管壁面に固着した伸縮材とを備えた小口径管
用曲線推進継輪である。That is, the present invention provides a cylindrical outer shell having substantially the same diameter as the buried pipe outer diameter, a fixing plate fixed to the inner surface of the outer shell and arranged along the front buried pipe wall surface, A plastic transmission member fixed to the back of the fixed plate at substantially the same width as the fixed plate width, an abutment plate mounted on the back of the plastic transmission material at a width substantially equal to the buried pipe wall so as to be movable in the propulsion direction, and a fixed plate. This is a curved propulsion joint for small diameter pipes comprising a plastic transmission material and an elastic material fixed to both buried pipe wall surfaces so as to wrap the plate.
【０００９】外殻としては、従来使用されている比較的
強度のある鋼材等を円筒状に製作したものが用いられ
る。固定板は、埋設管壁面幅と略同幅で推進力等に対し
て変形のしない厚さをもった鋼材を環状にしたものが用
いられ、外周を前記外殻に固着させる。As the outer shell, a conventionally used relatively strong steel material or the like manufactured in a cylindrical shape is used. As the fixing plate, a ring-shaped steel material having a thickness substantially equal to the width of the wall surface of the buried pipe and having a thickness that is not deformed by propulsion or the like is used, and the outer periphery is fixed to the outer shell.
【００１０】塑性伝達材としては、発泡倍率によって塑
性領域の異なる発泡スチロールや発泡ポリスチレン等よ
りなる発泡材が用いられる。塑性伝達材の配置として
は、上下のピン構造として曲線の追従性を良くするため
に、第２図に示すように、埋設管の上下のみに発泡材を
配置する方法や、第４図に示すように、埋設管の左右に
も塑性伝達材を配置するが、推進力の伝達は主に上下に
は位置した塑性伝達材から伝達されるように塑性領域の
異なる塑性伝達材を配置する方法を用いることも可能で
ある。As the plastic transmission material, a foamed material made of styrene foam, polystyrene foam, or the like having a different plastic region depending on the expansion ratio is used. In order to improve the followability of the curve as an upper and lower pin structure, as shown in FIG. 2, a method of arranging the foaming material only above and below the buried pipe, or as shown in FIG. In this way, plastic transmission materials are arranged on the left and right of the buried pipe, but the transmission of propulsion is mainly done by placing plastic transmission materials with different plastic regions so that they are transmitted from the plastic transmission materials located above and below. It is also possible to use.
【００１１】伸縮材としては、埋設管接続部の目地の開
口による伸縮に対して追従ができる合成ゴム等が用いら
れ、両端を埋設管壁面に固着する。埋設管壁面は、伸縮
材との固着を強力にするために、合成ゴム等と比較的接
着の良い金属環を、予め埋設管壁面に埋め込む方式を用
いることにより、より止水性を向上させることが可能と
なる。As the elastic material, synthetic rubber or the like which can follow expansion and contraction caused by the opening of the joint of the embedded pipe joint is used, and both ends are fixed to the embedded pipe wall surface. The wall surface of the buried pipe can be made more water-tight by using a method in which a metal ring with relatively good adhesion to synthetic rubber or the like is embedded in the wall of the buried pipe in advance in order to strengthen the adhesion with the elastic material. It becomes possible.
【００１２】[0012]
【作用】上記した本発明の構成により、曲線部において
埋設管は継輪部に配置した上下の塑性伝達材によるピン
接続と同等の機構により、先導体の方向に容易に追従す
る。また、曲線部における目地の移動にも、埋設管接続
部の内面全周に装着した伸縮材の伸長により、埋設管壁
面より離接することなく、一体化した接続部を形成する
ため、完全な目地部の止水をおこなうことができる。こ
のため、推進完了後に、再度埋設管接続部の目地施工を
おこなう必要がなく、小口径管の曲線推進にも使用が可
能となる。According to the structure of the present invention described above, the buried pipe in the curved portion easily follows the direction of the leading conductor by a mechanism equivalent to the pin connection by the upper and lower plastic transmission members arranged in the connecting ring portion. In addition, when the joint moves in the curved part, the expansion joint attached to the entire inner surface of the buried pipe connection part expands the elastic material to form an integrated connection part without coming and coming from the buried pipe wall surface. Water can be shut off in some parts. Therefore, it is not necessary to re-join the buried pipe connection after the completion of the propulsion, and the pipe can be used for curved propulsion of a small-diameter pipe.
【００１３】[0013]
【実施例】以下、本発明の詳細について図面に基づいて
具体的に説明する。第１図は、本発明の一実施例である
小口径管用曲線推進継輪１の構成を示す縦断面図であ
る。各埋設管７の接続部端面には、継輪１が嵌設されて
いる。継輪１は、埋設管７外径と略同径の筒状よりなる
外殻２と、該外殻２内面に固着して前方埋設管７壁面に
沿うように環設した固定板４と、固定板４の背面に固定
板４幅と略同幅で固着した塑性伝達材３と、塑性伝達材
３の背面に埋設管７壁面と略同幅で推進方向に移動可能
に環設した当板５と、固定板４と塑性伝達材３および当
板５を包むように凹型に固着した伸縮材６により構成さ
れている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a configuration of a curved propulsion connecting wheel 1 for a small-diameter pipe according to an embodiment of the present invention. The connecting ring 1 is fitted on the end face of the connection part of each buried pipe 7. The connecting ring 1 includes a cylindrical outer shell 2 having substantially the same diameter as the buried pipe 7, a fixed plate 4 fixed to the inner surface of the outer shell 2 and circulated along the wall of the front buried pipe 7, A plastic transmission member 3 fixed to the back of the fixed plate 4 at substantially the same width as the width of the fixed plate 4, and a support plate provided on the back of the plastic transmission material 3 so as to be movable in the propulsion direction at substantially the same width as the wall surface of the buried pipe 7. 5, a fixed plate 4, a plastic transmission member 3, and an elastic member 6 fixed in a concave shape so as to wrap the plate 5.
【００１４】第１図において埋設管７端面は、継輪１の
外殻２が埋設管７外径と同径になるように、外殻２が嵌
合する長さ分だけ段落ちが形成されていが、施工性や止
水性を向上させるために、埋設管７製作時に継輪１の外
殻２を埋設管７端面に埋め込んで一体化したものとして
（図示省略）、製作することも可能である。外殻２は、
推進時の地盤の摩擦力により、変形したりしないように
比較的強度のある鋼材等が用いられる。In FIG. 1, the end face of the buried pipe 7 is stepped down by the length to which the outer shell 2 is fitted so that the outer shell 2 of the connecting ring 1 has the same diameter as the outer diameter of the buried pipe 7. However, in order to improve workability and water stoppage, the outer shell 2 of the connecting ring 1 may be embedded in the end face of the buried pipe 7 when the buried pipe 7 is manufactured (not shown) and may be manufactured. is there. The outer shell 2
A relatively strong steel material or the like is used so as not to be deformed by the frictional force of the ground at the time of propulsion.
【００１５】第２図は、第１図の継輪１のＡ−Ａ矢視図
である。塑性伝達材３は、ピン接続と略同等の構造とし
て曲線の追随性を良くするために、埋設管センターの上
下のみに配置されている。FIG. 2 is a view of the connecting wheel 1 of FIG. The plastic transmission member 3 is arranged only above and below the buried pipe center in order to improve the followability of the curve as a structure substantially equivalent to the pin connection.
【００１６】また、第４図に示すように、埋設管７の左
右にも塑性伝達材８を配置し、埋設管７壁面全周に配置
する方法も採用することができる。この場合、曲線の追
随性を向上させるために、推進力の伝達を主として上下
の塑性伝達材３でできるように、左右の塑性伝達材８
は、すぐに塑性領域に入る発砲材が用いられる。Further, as shown in FIG. 4, it is also possible to adopt a method in which plastic transmission members 8 are arranged on the left and right of the buried pipe 7 and arranged on the entire wall of the buried pipe 7. In this case, in order to improve the followability of the curve, the right and left plastic transmission members 8 are used so that the propulsion force can be transmitted mainly by the upper and lower plastic transmission members 3.
Uses a foam material that immediately enters the plastic region.
【００１７】次に、本発明の推進継輪１を用いた推進施
工について説明すると、発進立坑内の前部に設置した先
導体の掘削機構を稼働し、発進立坑後方に装備した元押
ジャッキにて先導体の後端を押圧することにより先導体
を地中に推進施工していく。先導体の推進施工が完了す
ると、先導体の後端に埋設管７が挿入される。埋設管７
の接続が完了すると、先導体の掘削機構が再び稼働さ
れ、元押ジャッキにより埋設管７の後端を押圧して推進
施工がおこなわれる。１本目の埋設管７が地中に推進さ
れると、１本目埋設管７の後端に曲線推進継輪１が接続
され、２本目の埋設管７の先端が推進継輪１に挿入され
る。以後、前記作業を繰り返して埋設管７の推進施工が
おこなわれる。Next, the propulsion construction using the propulsion connection wheel 1 of the present invention will be described. The excavation mechanism of the leading conductor installed in the front part of the starting shaft is operated, and the extruder jack provided at the rear of the starting shaft is mounted on the jack. By pushing the rear end of the tip conductor, the tip conductor is pushed underground. When the propulsion of the leading conductor is completed, the buried pipe 7 is inserted into the rear end of the leading conductor. Buried pipe 7
Is completed, the excavating mechanism of the leading conductor is operated again, and the main pushing jack presses the rear end of the buried pipe 7 to perform the propulsion construction. When the first buried pipe 7 is propelled underground, the curved propulsion connecting ring 1 is connected to the rear end of the first buried pipe 7, and the tip of the second buried pipe 7 is inserted into the propulsion connecting ring 1. . Thereafter, the above operation is repeated, and the buried pipe 7 is propelled.
【００１８】推進力の伝達は、後方の埋設管７から上下
に配置した塑性伝達材３を通じて前方の埋設管７に伝達
される。埋設管７が曲線部に進行すると、推進継輪１の
塑性伝達材３のピン接続と同等の作用により、埋設管７
は前方の曲線へ追従していく。The transmission of the propulsive force is transmitted from the rear buried pipe 7 to the front buried pipe 7 through the plastic transmission members 3 arranged vertically. When the buried pipe 7 advances to the curved portion, the buried pipe 7 is actuated by the same action as the pin connection of the plastic transmission member 3 of the propulsion connecting wheel 1.
Follows the curve ahead.
【００１９】曲線区間へ入った埋設管７接続部の塑性伝
達材３は、第３図に示すように埋設管７が曲線を形成す
るために内側部分で縮小して変形し、曲線の内側と外側
で目地の開口差を生じる。埋設管７間の止水を目的とし
た伸縮材６は、曲線外側では伸長して引張を受け、内側
では縮小して圧縮を受けるが、伸縮材６は伸縮に対して
対応可能な合成ゴム等が用いられるとともに、さらに埋
設管７壁面に強力に固着されているため、引張や圧縮に
対して離接することはない。The plastic transmission material 3 at the connection of the buried pipe 7 entering the curved section is reduced and deformed at the inner portion so that the buried pipe 7 forms a curve as shown in FIG. A difference in the opening of the joint occurs on the outside. The elastic member 6 for the purpose of stopping water between the buried pipes 7 expands and receives tension on the outer side of the curve, and contracts and contracts on the inner side, but the elastic member 6 is made of synthetic rubber or the like that can cope with expansion and contraction. And is strongly fixed to the wall surface of the buried pipe 7, so that it does not come and go against tension or compression.
【００２０】また、伸縮材６と埋設管７壁面との固着を
より強力にするために、合成ゴム等と比較的接着の良い
金属環を、予め工場等において埋設管７壁面に埋め込む
方式を用いることにより、さらに強力な固着を得ること
が可能となる。In order to make the elastic member 6 and the wall of the buried pipe 7 more firmly fixed, a method of embedding a metal ring having relatively good adhesion to synthetic rubber or the like in advance in the wall of the buried pipe 7 in a factory or the like is used. This makes it possible to obtain a stronger fixing.
【００２１】[0021]
【発明の効果】本発明の小口径管用曲線推進継輪によ
り、埋設管の推進時および推進完了後も埋設管の接続部
である目地部の変位は、常に伸縮材の伸縮によって吸収
されるため、伸縮材と埋設管の固着は離接することがな
く、一体化されている。このため、推進完了後も埋設管
接続部の目地施工をおこなう必要がなくなり、小口径管
の曲線推進施工でも確実に実施できることを可能とし
た。According to the curved propulsion joint for small-diameter pipes of the present invention, the displacement of the joint, which is the connection part of the buried pipe, is always absorbed by the expansion and contraction of the elastic material even when the buried pipe is propelled and after the propulsion is completed. In addition, the elastic material and the buried pipe are integrated without being separated from each other. For this reason, it is not necessary to perform the joint construction of the connection of the buried pipe even after the completion of the propulsion, and it is possible to reliably perform the curve propulsion construction of the small diameter pipe.
【００２２】[0022]
【第１図】本発明の小口径管用曲線推進継輪を説明する
縦断面図である。FIG. 1 is a longitudinal sectional view for explaining a curved propulsion connecting wheel for a small-diameter pipe according to the present invention.
【第２図】本発明の曲線推進継輪である第１図のＡ−Ａ
矢視図である。FIG. 2 is a curved propulsion connection wheel of the present invention, which is AA in FIG. 1;
It is an arrow view.
【第３図】曲線部における曲線推進継輪の使用状況を説
明する平面図である。FIG. 3 is a plan view for explaining a use state of a curved propulsion connecting wheel in a curved portion.
【第４図】本発明の曲線推進継輪に装着する塑性伝達材
の配置に関する他の実施例を示す正面図である。FIG. 4 is a front view showing another embodiment of the arrangement of the plastic transmission member mounted on the curved propulsion connection wheel of the present invention.
１ 曲線推進継輪 ２ 外殻 ３ 上下の塑性伝達材 ４ 固定板 ５ 当輪 ６ 伸縮材 ７ 埋設管 ８ 左右の塑性伝達材 DESCRIPTION OF SYMBOLS 1 Curved propulsion connecting ring 2 Outer shell 3 Upper and lower plastic transmission material 4 Fixing plate 5 This wheel 6 Elastic material 7 Buried pipe 8 Left and right plastic transmission material
Claims (1)
進継輪において、埋設管外径と略同径で筒状よりなる外
殻と、該外殻内面に固着して前方埋設管壁面に沿うよう
に環設した固定板と、固定板の背面に固定板幅と略同幅
で固着した塑性伝達材と、塑性伝達材の背面に埋設管壁
面幅と略同幅で推進方向に移動可能に固着して環設した
当板と、固定板と塑性伝達材および当板を包むように両
埋設管壁面に固着した伸縮材とを備えたことを特徴とす
る小口径管用曲線推進継輪。1. A curved propulsion connecting wheel for burying a small-diameter buried pipe in a curved shape, comprising: a cylindrical outer shell having substantially the same diameter as the buried pipe outer diameter; and a front buried pipe wall fixed to an inner surface of the outer shell. A fixed plate installed along the line, a plastic transmission material fixed to the back of the fixed plate at approximately the same width as the fixed plate, and a propulsion direction moved to the back of the plastic transmission material at approximately the same width as the buried pipe wall width A curved propulsion splice for small diameter pipes, comprising: a fixed plate, which is fixedly attached and arranged; and a fixed plate, a plastic transmission member, and an elastic member fixed to both buried pipe walls so as to wrap the fixed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25182792A JP2743135B2 (en) | 1992-08-05 | 1992-08-05 | Curved propulsion coupling for small diameter pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25182792A JP2743135B2 (en) | 1992-08-05 | 1992-08-05 | Curved propulsion coupling for small diameter pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0658081A JPH0658081A (en) | 1994-03-01 |
| JP2743135B2 true JP2743135B2 (en) | 1998-04-22 |
Family
ID=17228515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25182792A Expired - Lifetime JP2743135B2 (en) | 1992-08-05 | 1992-08-05 | Curved propulsion coupling for small diameter pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2743135B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013023846A (en) * | 2011-07-19 | 2013-02-04 | Nippon Hume Corp | Connection part structure of propulsion pipe |
-
1992
- 1992-08-05 JP JP25182792A patent/JP2743135B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0658081A (en) | 1994-03-01 |
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