JP2003269664A - Pipe connecting structure - Google Patents
Pipe connecting structureInfo
- Publication number
- JP2003269664A JP2003269664A JP2002072335A JP2002072335A JP2003269664A JP 2003269664 A JP2003269664 A JP 2003269664A JP 2002072335 A JP2002072335 A JP 2002072335A JP 2002072335 A JP2002072335 A JP 2002072335A JP 2003269664 A JP2003269664 A JP 2003269664A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- reinforcing
- tube
- injection
- connecting structure
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば、地盤にセ
メントミルクや薬液を注入するダブルパッカ工法に使用
される注入用外管等の配管を接続するための管の接続構
造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connecting structure for connecting pipes such as an injection outer pipe used in a double packer method for injecting cement milk or a chemical solution into the ground.
【０００２】[0002]
【従来の技術】従来、軟弱地盤上に建築物等を構築する
際には、薬液を注入して固結土を造成する薬液注入工法
により地盤を強化することが行われている。また、ダム
建設においても基礎地盤からの浸透流を抑制するため
に、セメントミルクを注入することにより地盤の透水性
を低下させることが行われている。これらの注入工法の
うち、ダブルパッカ工法ではボーリング孔内に注入用外
管が挿入され、この注入用外管内に注入用内管が挿入さ
れ、地盤に薬液が注入される。図６は、このようなダブ
ルパッカ工法に採用される注入用外管の接続構造を示
す。図において、１は、例えば、樹脂製の注入用外管を
示している。この注入用外管１は、一端部に外ねじ部２
ａを設けた上側管２と、一端部に内ねじ部３ａを設けた
下側管３とで構成されている。2. Description of the Related Art Conventionally, when constructing a building or the like on soft ground, the ground has been strengthened by a chemical solution injection method in which a chemical solution is injected to form solidified soil. In addition, in dam construction, in order to suppress the seepage flow from the foundation ground, the permeability of the ground is reduced by injecting cement milk. Among these injection methods, in the double packer method, the injection outer pipe is inserted into the boring hole, the injection inner pipe is inserted into the injection outer pipe, and the chemical solution is injected into the ground. FIG. 6 shows a connection structure of an injection outer tube adopted in such a double packer method. In the figure, 1 indicates, for example, a resin injection outer tube. The outer tube 1 for injection has an outer threaded portion 2 at one end.
It is composed of an upper pipe 2 provided with a and a lower pipe 3 provided with an inner threaded portion 3a at one end.
【０００３】図６に示す注入用外管１の接続構造におい
ては、上側管２の外ねじ部２ａを下側管３の内ねじ部３
ａに螺合することにより、下側管３に上側管２を確実に
接続して一本の注入用外管１を形成することができる。
図７は、同様にダブルパッカ工法に採用される注入用外
管の接続構造の別の例を示す。図において、５は、例え
ば、樹脂製の注入用外管を示している。この注入用外管
５は、一端部に外側テーパ部６ａと係合凸部６ｂを設け
た上側管６と、一端部に内側テーパ部７ａと係合凹部７
ｂを設けた下側管７とで構成されている。In the connection structure of the outer pipe 1 for injection shown in FIG. 6, the outer screw portion 2a of the upper pipe 2 is replaced with the inner screw portion 3 of the lower pipe 3.
By screwing into a, the upper tube 2 can be reliably connected to the lower tube 3 to form one injection outer tube 1.
FIG. 7 shows another example of the connection structure of the injection outer pipe which is similarly adopted in the double packer method. In the figure, reference numeral 5 indicates, for example, a resin injection outer tube. The outer pipe 5 for injection has an upper pipe 6 having an outer taper portion 6a and an engagement projection 6b at one end, and an inner taper portion 7a and an engagement recess 7 at one end.
and a lower tube 7 provided with b.
【０００４】図７に示す注入用外管５の接続構造におい
ては、上側管６の外側テーパ部６ａと係合凸部６ｂを下
側管７の内側テーパ部７ａと係合凹部７ｂに当接させる
ことにより、下側管７に上側管６を確実に接続して一本
の注入用外管５を形成することができる。In the connection structure of the injection outer pipe 5 shown in FIG. 7, the outer tapered portion 6a and the engaging convex portion 6b of the upper pipe 6 are brought into contact with the inner tapered portion 7a and the engaging concave portion 7b of the lower pipe 7. By doing so, the upper pipe 6 can be reliably connected to the lower pipe 7 to form one injection outer pipe 5.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の管の接続構造では、例えば、図６のような場
合、ボーリング孔に溜まった水による注入用外管１の浮
力により、また、隣接する他のボーリング孔に薬液やセ
メントミルクを注入する際に作用する圧力の影響等によ
り、注入用外管１に外部から圧力が作用すると、接続部
近傍は管の断面が接続用に欠損しているため強度が弱
く、この近傍に亀裂が発生し、注入用外管１が折損する
おそれがあった。However, in such a conventional pipe connecting structure, for example, in the case shown in FIG. 6, the water is accumulated in the boring hole so that the injection outer pipe 1 is buoyant and adjacent to the pipe. When pressure is applied from the outside to the injection outer pipe 1 due to the influence of the pressure acting when injecting the chemical liquid or cement milk into the other boring holes, the cross section of the pipe near the connection part is missing for connection. Since the strength is weak, a crack may be generated in the vicinity, and the injection outer pipe 1 may be broken.
【０００６】これに対し、図７に示す構造では、管の接
続部の強度を増すことが可能である。しかし、近年、ダ
ムグラウチングでは軟質地盤に対して高圧グラウチング
を行うこともあり、このような形状でも注入用外管５の
折損のおそれが残っていた。そこで、管の接続部におけ
る管の強度を保持するために、図８、図９に示す接続構
造を用いた注入用外管１０、１５が知られている。On the other hand, in the structure shown in FIG. 7, it is possible to increase the strength of the connecting portion of the pipe. However, in recent years, in dam grouting, high-pressure grouting is sometimes performed on soft ground, and even with such a shape, there is still a risk of breakage of the injection outer pipe 5. Therefore, in order to maintain the strength of the pipe at the connecting portion of the pipe, outer injection pipes 10 and 15 using the connection structure shown in FIGS. 8 and 9 are known.
【０００７】図８に示す構造では、上側管１１と下側管
１２を突き合わせ、内ソケット１３を用いて接着接続し
ている。しかし、内ソケット１３を用いた場合、内ソケ
ット１３が管内に突出しているため、注入用内管（図示
せず）を挿入する時の障害となるという問題がある。図
９に示す構造では、上側管１１と下側管１２を突き合わ
せ、外ソケット１４を用いて接着接続している。In the structure shown in FIG. 8, the upper pipe 11 and the lower pipe 12 are abutted against each other, and an inner socket 13 is used for adhesive connection. However, when the inner socket 13 is used, since the inner socket 13 projects into the pipe, there is a problem that it becomes an obstacle when inserting an injection inner pipe (not shown). In the structure shown in FIG. 9, the upper pipe 11 and the lower pipe 12 are abutted against each other, and the outer socket 14 is used for adhesive connection.
【０００８】しかし、外ソケット１４を用いた場合に
は、注入用外管１５を挿入するためのボーリング孔径を
外ソケット１４を用いない場合よりも大きくする必要が
あり、さらに外ソケット１４が注入用外管１５の外側に
突出しているため、注入用外管１５を孔内に挿入する時
の障害となるという問題がある。本発明は、上記のよう
な問題点を解決するためになされたもので、その目的
は、管の内面あるいは外面に形成される突出部を微少と
するとともに、管の接続部の強度を向上することができ
る管の接続構造を提供することにある。However, when the outer socket 14 is used, it is necessary to make the diameter of the boring hole for inserting the injection outer pipe 15 larger than that when the outer socket 14 is not used. Since it protrudes to the outside of the outer tube 15, there is a problem that it becomes an obstacle when the outer tube 15 for injection is inserted into the hole. The present invention has been made to solve the above problems, and an object of the present invention is to improve the strength of a connecting portion of a pipe while minimizing the protrusion formed on the inner surface or the outer surface of the pipe. It is to provide a connection structure of a pipe capable of.
【０００９】[0009]
【課題を解決するための手段】請求項１にかかる発明
は、一方の管の一端を、他方の管の一端に挿入して接続
部を形成してなる管の接続構造において、前記接続部の
外周を補強管で被覆してなることを特徴とする。請求項
２にかかる発明は、一端の外面にその先端に向けて縮径
する外側テーパ面を形成するとともに、このテーパ面の
基部に緩やかな断面形状の係合凸部を形成する一方の管
と、一端の内面に前記前記一方の管に形成した外側テー
パ面に当接する内側テーパ面を形成するとともに、この
内側テーパ面に前記外側テーパ側の係合凸部に係合する
緩やかな断面の係合凹部を形成する他方の管とを備え、
前記一方の管の一端を、前記他方の管の一端に挿入する
とともに、両管の係合部を介して接続部を形成し、この
接続部の外周を補強管で被覆してなることを特徴とす
る。According to a first aspect of the present invention, there is provided a connecting structure for a pipe, wherein one end of one pipe is inserted into one end of the other pipe to form a connecting portion. It is characterized in that the outer periphery is covered with a reinforcing pipe. According to a second aspect of the present invention, an outer tapered surface is formed on the outer surface of one end of which the diameter is reduced toward the tip thereof, and at the base of the tapered surface, an engaging convex portion having a gentle cross section is formed. An inner tapered surface that abuts an outer tapered surface formed on the one tube is formed on one inner surface of the one end, and the inner tapered surface has a gentle cross section that engages with the engagement protrusion on the outer tapered side. With the other tube forming a mating recess,
One end of the one pipe is inserted into one end of the other pipe, and a connecting portion is formed through an engaging portion of both pipes, and an outer periphery of the connecting portion is covered with a reinforcing pipe. And
【００１０】請求項３にかかる発明は、一端の外面に雄
螺旋を形成する一方の管と、一端の内面に前記雄螺旋に
螺合する雌螺旋を形成する他方の管とを備え、前記一方
の管の一端に形成した前記雄螺旋を、前記他方の管の一
端に形成した前記雌螺旋に螺着して接続部を形成し、こ
の接続部の外周を補強管で被覆してなることを特徴とす
る。The invention according to claim 3 is provided with one tube forming a male spiral on the outer surface of one end and the other tube forming an internal spiral threaded to the male spiral on the inner surface of the one end. The male spiral formed at one end of the pipe is screwed to the female spiral formed at the one end of the other pipe to form a connection part, and the outer periphery of the connection part is covered with a reinforcing pipe. Characterize.
【００１１】請求項４にかかる発明は、請求項１ないし
請求項３の何れか１項記載の管の接続構造において、前
記補強管は、前記一方の管および前記他方の管より大き
い曲げ強度を有する材料からなることを特徴とする。請
求項５にかかる発明は、請求項１ないし請求項３の何れ
か１項記載の管の接続構造において、前記補強管は、金
属からなることを特徴とする。According to a fourth aspect of the present invention, in the pipe connecting structure according to any one of the first to third aspects, the reinforcing pipe has a bending strength larger than that of the one pipe and the other pipe. It is characterized by comprising a material having. According to a fifth aspect of the invention, in the pipe connecting structure according to any one of the first to third aspects, the reinforcing pipe is made of metal.
【００１２】請求項６にかかる発明は、請求項１ないし
請求項５の何れか１項記載の管の接続構造において、前
記両管は、前記補強管で被覆する区間の外径が前記補強
管の肉厚と同一もしくは肉厚より小さい量だけ縮径する
段部を形成するとともに、前記段部に前記補強管の内面
を当接してなることを特徴とする。According to a sixth aspect of the present invention, in the pipe connecting structure according to any one of the first to fifth aspects, the outer diameters of the sections covered by the reinforcing pipes of the both pipes are the reinforcing pipes. And a stepped portion having a diameter reduced by an amount equal to or smaller than the wall thickness of No. 1, and the inner surface of the reinforcing pipe is brought into contact with the stepped portion.
【００１３】[0013]
【発明の実施の形態】以下、本発明の詳細を図面に示す
一実施形態について説明する。図１ないし図３は、本発
明に係る管の接続構造の一実施形態を示す（請求項１、
３〜６に対応）。図において、２０は、例えばダブルパ
ッカ工法に使用される樹脂製の注入用外管を示してい
る。この注入用外管２０は、一方の管である上側管３０
と、他方の管である下側管４０と、上側管３０および下
側管４０の接続部に取り付けられる補強管５０とで構成
されている。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention shown in the drawings will be described below. 1 to 3 show an embodiment of a pipe connecting structure according to the present invention (claim 1,
Corresponding to 3-6). In the figure, 20 indicates a resin injection outer tube used in, for example, the double packer method. The outer pipe 20 for injection is an upper pipe 30 which is one pipe.
And a lower pipe 40 which is the other pipe, and a reinforcing pipe 50 attached to a connecting portion between the upper pipe 30 and the lower pipe 40.
【００１４】上側管３０の下端側面部３１の外面には、
縮径部３２を介してその先端に向けて縮径する外側テー
パ面３３が形成されている。この外側テーパ面３３の基
部には雄螺旋３４が形成されている。下側管４０の上端
面部４１の内面には、上側管３０の外側テーパ面３３に
当接する内側テーパ面４２が形成され、この内側テーパ
面４２の先端には、外側テーパ面３３の雄螺旋部３４と
螺合する雌螺旋４３が形成されている。さらに、下側管
４０の上端面部４１の外面には、上側管３０の基部の上
部に形成された縮径部３２と同じ径を有する縮径部４４
が形成されている。縮径部４４の長さは内側テーパ面４
２よりも長くなっている。On the outer surface of the lower end side surface portion 31 of the upper tube 30,
An outer taper surface 33 is formed whose diameter is reduced toward the tip through the diameter reduced portion 32. A male spiral 34 is formed at the base of the outer tapered surface 33. An inner tapered surface 42 that abuts the outer tapered surface 33 of the upper tube 30 is formed on the inner surface of the upper end surface portion 41 of the lower tube 40, and the male spiral portion of the outer tapered surface 33 is formed at the tip of the inner tapered surface 42. A female spiral 43 that is screwed with the screw 34 is formed. Further, on the outer surface of the upper end surface portion 41 of the lower tube 40, a reduced diameter portion 44 having the same diameter as the reduced diameter portion 32 formed on the upper portion of the base portion of the upper tube 30.
Are formed. The length of the reduced diameter portion 44 is the inner tapered surface 4
It is longer than 2.
【００１５】補強管５０の内面は、上側管３０および下
側管４０の縮径部３２、４４に当接し、長さは上側管３
０の縮径部３２と下側管４０の縮径部４４の長さの和に
等しくなっている。補強管５０の外径は、上側管３０お
よび下側管４０の外径と等しいかやや大きくなってい
る。補強管５０の材質を上側管３０あるいは下側管４０
の材質よりも強度のあるものを用いることにより、既存
の外ソケットを用いるよりも肉厚を薄くすることが可能
である。The inner surface of the reinforcing pipe 50 abuts on the reduced diameter portions 32 and 44 of the upper pipe 30 and the lower pipe 40, and has a length of the upper pipe 3.
It is equal to the sum of the lengths of the reduced diameter portion 32 of 0 and the reduced diameter portion 44 of the lower tube 40. The outer diameter of the reinforcing pipe 50 is equal to or slightly larger than the outer diameters of the upper pipe 30 and the lower pipe 40. The material of the reinforcing pipe 50 is the upper pipe 30 or the lower pipe 40.
It is possible to make the wall thickness thinner by using a material having a strength higher than that of the conventional outer socket.
【００１６】次に、斯くして構成された本実施形態に係
る管の接続構造を図３により説明する。先ず、下側管４
０の縮径部４４に補強管５０を被せる。次に、上側管３
０の外側テーパ３３側を回転しながら、補強管５０を介
して下側管４０の内側テーパ４２内に挿入する。Next, the connecting structure of the pipe according to the present embodiment thus constructed will be described with reference to FIG. First, the lower tube 4
The reduced diameter portion 44 of 0 is covered with the reinforcing pipe 50. Next, the upper tube 3
While rotating the outer taper 33 side of 0, it is inserted into the inner taper 42 of the lower tube 40 via the reinforcing tube 50.
【００１７】これにより、外側テーパ面３３の雄螺旋部
３４と内側テーパ面４２の雌螺旋４３とが螺合し、上側
管３０と下側管４０とが図１および図２に示すように接
続する。以上のように、本実施形態によれば、上側管３
０と下側管４０とを接続する補強管５０は、上側管３０
および下側管４０の縮径部３２、４４を覆うことによ
り、補強管５０の外径は上側管３０および下側管４０の
外径とほぼ等しくなる。As a result, the male spiral portion 34 of the outer tapered surface 33 and the female spiral 43 of the inner tapered surface 42 are screwed together, and the upper tube 30 and the lower tube 40 are connected as shown in FIGS. 1 and 2. To do. As described above, according to the present embodiment, the upper pipe 3
0 and the lower pipe 40 connect the reinforcing pipe 50 to the upper pipe 30.
By covering the reduced diameter portions 32 and 44 of the lower pipe 40, the outer diameter of the reinforcing pipe 50 becomes substantially equal to the outer diameter of the upper pipe 30 and the lower pipe 40.
【００１８】従って、補強管５０が従来の外ソケットの
ように接続部から突出することがなくなり、注入用外管
２０を挿入するためのボーリング孔径を補強管５０を用
いない場合よりも大きくする必要がなくなる。勿論、補
強管５０の突出量は微少であるから、注入用外管２０を
孔内に挿入する時の障害となるという問題も解消でき
る。なお、補強管５０の外径が上側管３０および下側管
４０の外径より僅かに大きくなる場合は、補強管５０の
両端部に外テーパを設けることにより、注入用外管２０
を孔内に挿入する時に補強管５０が障害となることを解
消することができる。Therefore, unlike the conventional outer socket, the reinforcing pipe 50 does not project from the connecting portion, and the bore diameter for inserting the injection outer pipe 20 must be made larger than that in the case where the reinforcing pipe 50 is not used. Disappears. Of course, since the protruding amount of the reinforcing pipe 50 is small, it is possible to solve the problem that it becomes an obstacle when the outer injection pipe 20 is inserted into the hole. If the outer diameter of the reinforcing pipe 50 is slightly larger than the outer diameters of the upper pipe 30 and the lower pipe 40, outer taper is provided at both ends of the reinforcing pipe 50 so that the outer pipe 20 for injection is provided.
It is possible to prevent the reinforcing pipe 50 from becoming an obstacle when inserting into the hole.
【００１９】また、上側管３０と下側管４０を直接螺旋
接続することにより、ソケットを接着する必要が無く、
作業が容易になる。表１に接手の曲げ試験結果を示す。
表１において、Ｅは図１に示す本実施形態に係る管の接
続構造であり、Ｇは図７に示す従来の管の接続構造であ
る。Further, by directly spirally connecting the upper pipe 30 and the lower pipe 40, it is not necessary to bond the socket,
Work becomes easy. Table 1 shows the bending test results of the joints.
In Table 1, E is the connection structure of the pipe according to the present embodiment shown in FIG. 1, and G is the connection structure of the conventional pipe shown in FIG.
【００２０】表１に示すとおり、本実施形態に係る管の
接続構造では、従来の管の接続接続構造における曲げ強
度の約３倍以上の強度を有し、またたわみも発生してい
ないことが確認できた。As shown in Table 1, the pipe connecting structure according to this embodiment has a bending strength that is about three times or more the bending strength of the conventional pipe connecting and connecting structure, and that no bending occurs. It could be confirmed.
【表１】
図４および図５は、本発明に係る管の接続構造の別の実
施形態を示す（請求項１、２、４〜６に対応）。[Table 1] 4 and 5 show another embodiment of the pipe connecting structure according to the present invention (corresponding to claims 1, 2, 4 to 6).
【００２１】本実施形態において、注入用外管６０は、
上側管３０に設けた雄螺旋３４および下側管４０に設け
た雌螺旋４３に代えて、上側管３０に緩やかな断面を有
する係合凸部３５を設け、下側管４０に係合凸部３５と
係合するように設けられた緩やかな断面を有する係合凹
部４５を設けた点で、図１に示す実施形態における注入
用外管２０とは相違する。In the present embodiment, the injection outer tube 60 is
Instead of the male spiral 34 provided on the upper pipe 30 and the female spiral 43 provided on the lower pipe 40, an engaging convex portion 35 having a gentle cross section is provided on the upper pipe 30, and an engaging convex portion is provided on the lower pipe 40. The outer injection pipe 20 in the embodiment shown in FIG. 1 differs from the outer injection pipe 20 in that an engagement recess 45 having a gentle cross section is provided so as to engage with the injection pipe 35.
【００２２】なお、その他の構成は、図１に示す実施形
態における注入用外管２０と同様であるから、同一の符
号を付し、その説明は省略する。次に、斯くして構成さ
れた本実施形態に係る管の接続構造を図５により説明す
る。先ず、下側管４０の縮径部４４に補強管５０を被せ
る。Since the other structures are the same as those of the injection outer tube 20 in the embodiment shown in FIG. 1, the same reference numerals are given and the description thereof is omitted. Next, the pipe connection structure according to the present embodiment thus configured will be described with reference to FIG. First, the reduced diameter portion 44 of the lower pipe 40 is covered with the reinforcing pipe 50.
【００２３】次に、上側管３０の外側テーパ３３側を、
補強管５０を介して下側管４０の内側テーパ４２内に挿
入する。そして、上側管３０に設けた緩やかな断面を有
する係合凸部３５が、下側管４０に設けた緩やかな断面
を有する係合凹部４５に係合した時点で、上側管３０の
挿入を停止する。これにより、上側管３０と下側管４０
とが図４２に示すように接続する。Next, the outer taper 33 side of the upper tube 30 is
It is inserted into the inner taper 42 of the lower tube 40 via the reinforcing tube 50. The insertion of the upper pipe 30 is stopped when the engagement projection 35 provided on the upper pipe 30 and having a gentle cross section engages with the engagement recess 45 provided on the lower pipe 40 and having a gentle cross section. To do. Thereby, the upper pipe 30 and the lower pipe 40
And are connected as shown in FIG.
【００２４】本実施形態においても、上記実施形態と同
様の作用効果を奏することが可能となる。なお、以上各
実施形態では、上側管３０と下側管４０の接続部分はテ
ーパとなっているが、直管になっていても良い。Also in this embodiment, it is possible to obtain the same effects as those of the above embodiment. In each of the above embodiments, the connecting portion between the upper pipe 30 and the lower pipe 40 is tapered, but it may be a straight pipe.
【００２５】[0025]
【発明の効果】本発明によれば、従来の管の接続構造よ
りも接続部の強度が大幅に向上する。また、本発明によ
れば、公知のソケット類を用いた場合に形成される管の
内面あるいは外面の突出がほとんどないため、浮力や隣
接孔の注入による外管の欠損が生じることなく、さらに
孔内への外管の挿入および外管内への内管の挿入に支障
が無く、外管設置のための孔を大きくする必要もなくな
る。According to the present invention, the strength of the connecting portion is significantly improved as compared with the conventional pipe connecting structure. Further, according to the present invention, since there is almost no protrusion on the inner surface or the outer surface of the pipe formed when using the known sockets, the outer pipe is not damaged due to buoyancy or injection of the adjacent hole, There is no hindrance to the insertion of the outer tube into the inner tube and the insertion of the inner tube into the outer tube, and it is not necessary to enlarge the hole for installing the outer tube.
【図１】本発明の一実施形態における管の接続構造を示
す正面図である。FIG. 1 is a front view showing a pipe connection structure according to an embodiment of the present invention.
【図２】図１の管の接続構造を示す断面図である。2 is a cross-sectional view showing a connection structure of the pipe of FIG.
【図３】図１の管の接続構造を形成前の状態を示す分解
図である。FIG. 3 is an exploded view showing a state before the connection structure of the pipe of FIG. 1 is formed.
【図４】本発明の別の実施形態における管の接続構造を
示す正面図である。FIG. 4 is a front view showing a pipe connection structure according to another embodiment of the present invention.
【図５】図４の管の接続構造を形成前の状態を示す分解
図である。5 is an exploded view showing a state before forming the connection structure of the pipe of FIG.
【図６】従来の注入用外管の接続構造を示す縦断面図で
ある。FIG. 6 is a vertical cross-sectional view showing a conventional connection structure for an injection outer tube.
【図７】従来の注入用外管の別の接続構造を示す縦断面
図である。FIG. 7 is a vertical cross-sectional view showing another connection structure of a conventional injection outer tube.
【図８】内ソケットを用いた従来の管の接続構造であ
る。FIG. 8 is a conventional pipe connection structure using an inner socket.
【図９】外ソケットを用いた従来の管の接続構造であ
る。FIG. 9 is a conventional pipe connection structure using an outer socket.
２０、６０ 注入用外管 ３０ 上側管（一方の管） ３１ 上側管３０の下端側面部（一方の管の一端部） ３２ 縮径部 ３３ 外側テーパ面 ３４ 雄螺旋 ４０ 下側管（他方の管） ４１ 下側管４０の上端面部（他方の管の一端部） ４２ 内側テーパ面 ４３ 雌螺旋 ４４ 縮径部 ３５ 係合凸部 ４５ 係合凹部 ５０ 補強管 20, 60 Injection outer tube 30 Upper tube (one tube) 31 Lower end side surface of the upper pipe 30 (one end of one pipe) 32 Reduced diameter part 33 Outer taper surface 34 Male Spiral 40 Lower tube (other tube) 41 Upper end surface of the lower pipe 40 (one end of the other pipe) 42 Inner taper surface 43 Female spiral 44 Reduced diameter part 35 engagement protrusion 45 Engagement recess 50 Reinforcement pipe
Claims (6)
入して接続部を形成してなる管の接続構造において、前
記接続部の外周を補強管で被覆してなることを特徴とす
る管の接続構造。1. A pipe connecting structure in which one end of one pipe is inserted into one end of the other pipe to form a connecting portion, wherein an outer periphery of the connecting portion is covered with a reinforcing pipe. And pipe connection structure.
外側テーパ面を形成するとともに、このテーパ面の基部
に緩やかな断面形状の係合凸部を形成する一方の管と、 一端の内面に前記前記一方の管に形成した外側テーパ面
に当接する内側テーパ面を形成するとともに、この内側
テーパ面に前記外側テーパ側の係合凸部に係合する緩や
かな断面の係合凹部を形成する他方の管とを備え、 前記一方の管の一端を、前記他方の管の一端に挿入する
とともに、両管の係合部を介して接続部を形成し、この
接続部の外周を補強管で被覆してなることを特徴とする
管の接続構造。2. An outer taper surface having a diameter reduced toward the tip thereof is formed on the outer surface of one end, and one pipe having an engaging projection having a gentle cross section is formed at the base of the tapered surface, An inner tapered surface that abuts the outer tapered surface formed on the one pipe is formed on the inner surface, and an engagement recess having a gentle cross section that engages with the engagement projection on the outer taper side is formed on the inner tapered surface. With the other tube to be formed, one end of the one tube is inserted into one end of the other tube, and a connecting portion is formed through an engaging portion of both tubes, and an outer periphery of the connecting portion is reinforced. A pipe connection structure characterized by being covered with a pipe.
と、 一端の内面に前記雄螺旋に螺合する雌螺旋を形成する他
方の管とを備え、 前記一方の管の一端に形成した前記雄螺旋を、前記他方
の管の一端に形成した前記雌螺旋に螺着して接続部を形
成し、この接続部の外周を補強管で被覆してなることを
特徴とする管の接続構造。3. One pipe having a male spiral formed on the outer surface at one end, and the other pipe having a female spiral screwed on the male spiral formed on the inner surface at one end, the pipe being formed at one end of the one pipe. The connection of a pipe characterized in that the above-mentioned male spiral is screwed onto the female spiral formed at one end of the other pipe to form a connection part, and the outer periphery of the connection part is covered with a reinforcing pipe. Construction.
載の管の接続構造において、 前記補強管は、前記一方の管および前記他方の管より大
きい曲げ強度を有する材料からなることを特徴とする管
の接続構造。4. The pipe connecting structure according to any one of claims 1 to 3, wherein the reinforcing pipe is made of a material having a bending strength higher than that of the one pipe and the other pipe. Characteristic pipe connection structure.
載の管の接続構造において、 前記補強管は、金属からなることを特徴とする管の接続
構造。5. The pipe connecting structure according to any one of claims 1 to 3, wherein the reinforcing pipe is made of metal.
載の管の接続構造において、 前記両管は、前記補強管で被覆する区間の外径が前記補
強管の肉厚と同一もしくは肉厚より小さい量だけ縮径す
る段部を形成するとともに、前記段部に前記補強管の内
面を当接してなることを特徴とする管の接続構造。6. The pipe connecting structure according to claim 1, wherein the outer diameter of a section covered by the reinforcing pipe is the same as the wall thickness of the reinforcing pipe. A connecting structure for a pipe, characterized in that a step portion whose diameter is reduced by an amount smaller than a wall thickness is formed, and an inner surface of the reinforcing pipe is brought into contact with the step portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002072335A JP2003269664A (en) | 2002-03-15 | 2002-03-15 | Pipe connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002072335A JP2003269664A (en) | 2002-03-15 | 2002-03-15 | Pipe connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003269664A true JP2003269664A (en) | 2003-09-25 |
Family
ID=29202362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002072335A Pending JP2003269664A (en) | 2002-03-15 | 2002-03-15 | Pipe connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003269664A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011064006A (en) * | 2009-09-17 | 2011-03-31 | Ohbayashi Corp | Solidifying material injection pipe and construction method of the same |
| CN103056934A (en) * | 2013-01-08 | 2013-04-24 | 国家林业局北京林业机械研究所 | All-bamboo tapered-joint extension material and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316918U (en) * | 1976-07-24 | 1978-02-13 | ||
| JPS61201989A (en) * | 1985-02-28 | 1986-09-06 | 九州積水工業株式会社 | Method of reinforcing connecting section of fiber reinforcedplastic pipe |
| JPS62112385U (en) * | 1986-08-20 | 1987-07-17 | ||
| JPH0243583U (en) * | 1988-09-19 | 1990-03-26 | ||
| JPH05280688A (en) * | 1992-03-31 | 1993-10-26 | Ii T S Kk | Method for protecting connection of hard synthetic resin pipe and protective pipe for joint used in the same |
| JPH09159071A (en) * | 1995-12-04 | 1997-06-17 | Toshin Kogyo Kk | Joint part structure for synthetic resin pipe |
-
2002
- 2002-03-15 JP JP2002072335A patent/JP2003269664A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316918U (en) * | 1976-07-24 | 1978-02-13 | ||
| JPS61201989A (en) * | 1985-02-28 | 1986-09-06 | 九州積水工業株式会社 | Method of reinforcing connecting section of fiber reinforcedplastic pipe |
| JPS62112385U (en) * | 1986-08-20 | 1987-07-17 | ||
| JPH0243583U (en) * | 1988-09-19 | 1990-03-26 | ||
| JPH05280688A (en) * | 1992-03-31 | 1993-10-26 | Ii T S Kk | Method for protecting connection of hard synthetic resin pipe and protective pipe for joint used in the same |
| JPH09159071A (en) * | 1995-12-04 | 1997-06-17 | Toshin Kogyo Kk | Joint part structure for synthetic resin pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011064006A (en) * | 2009-09-17 | 2011-03-31 | Ohbayashi Corp | Solidifying material injection pipe and construction method of the same |
| CN103056934A (en) * | 2013-01-08 | 2013-04-24 | 国家林业局北京林业机械研究所 | All-bamboo tapered-joint extension material and manufacturing method thereof |
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