JP3534513B2 - Coupling device - Google Patents
Coupling deviceInfo
- Publication number
- JP3534513B2 JP3534513B2 JP32271795A JP32271795A JP3534513B2 JP 3534513 B2 JP3534513 B2 JP 3534513B2 JP 32271795 A JP32271795 A JP 32271795A JP 32271795 A JP32271795 A JP 32271795A JP 3534513 B2 JP3534513 B2 JP 3534513B2
- Authority
- JP
- Japan
- Prior art keywords
- male
- female
- segment
- male member
- female member
- 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
- Lining And Supports For Tunnels (AREA)
Description
【発明の詳細な説明】
【0001】
【発明の属する技術分野】本発明は、第1被連結部材に
オス部材を設け、第2被連結部材に前記オス部材が入込
み可能なメス部材を設けて、前記オス部材を前記メス部
材に挿入することにより、前記第1被連結部材および前
記第2被連結部材を互いに連結自在に構成し、前記オス
部材を略筒形状に形成すると共に、前記オス部材が前記
メス部材に挿入されるに伴って、前記オス部材の先端部
が拡径される拡径機構を設け、拡径された前記オス部材
の外面と当接して、前記オス部材が前記メス部材から抜
け出るのを阻止する抜止部を前記メス部材に設けてある
連結装置に関する。
【0002】
【従来の技術】この種の連結装置は、例えば、トンネル
を形成するシールドセグメントどうしを連結するのに用
いられ、その一例として特開平7−34785に開示さ
れるものがあった。即ち、図5に示すごとく、当該連結
装置はトンネルを形成するシールドセグメントどうしを
連結するものであって、一方のセグメント31にオス部
材32を設けると共に、当該オス部材32の先端部にコ
ーン部材33を挿入しておき、既に設置されている他方
のセグメント34に設けられたメス部材35に、このオ
ス部材32を挿入させることで両セグメント31,34
を連結するものである。前記オス部材32および前記コ
ーン部材33が前記メス部材35に所定深さ挿入される
と、前記コーン部材33が前記メス部材35の底面36
に当接し、さらに、前記オス部材32を挿入すると、前
記オス部材32の先端部が前記コーン部材33の表面に
沿って拡径される。この結果、前記オス部材32の先端
部が、前記メス部材35の内面37に拘束されて抜止め
固定されるものである。
【0003】
【発明が解決しようとする課題】しかし、上記従来の連
結装置によれば、当該連結装置を備えたセグメント等の
搬送性・取扱性に劣るという問題があった。即ち、前記
オス部材32は、一方のセグメント31から突出した状
態に取付けられているから、セグメントの輸送中などに
誤って前記オス部材32を他物に接触させることがあ
り、その場合には、前記オス部材32が変形して使用不
可能になるおそれがある。また、通常、当該コーン部材
33は、前記オス部材32の全端部から突出した状態に
取付けられているから、前記オス部材32の突出長さは
更に長くなる。よって、上記不都合を助長する結果とな
っていた。
【0004】本発明の目的は、このような従来技術の欠
点を解消し、優れた搬送性・取扱性を有しながら、連結
作業を円滑に行い得る連結装置を提供することにある。
【0005】
【課題を解決するための手段】
(構成1)この目的を達成するための本発明の特徴構成
は、請求項1に記載したごとく、オス部材の周囲を取囲
む囲繞部を第1被連結部材に設けて、前記オス部材を前
記囲繞部の内部に引退した状態で取付け、メス部材を前
記囲繞部の内部空間に挿入自在な凸状に形成すると共
に、前記メス部材の内部に、拡径機構の一部を構成する
芯部材を前記メス部材から離脱自在に備えた点にある。
(作用・効果)本構成の連結装置によれば、前記オス部
材が囲繞部によって保護されるから、第1被連結部材を
誤って他物に接触させたとしてもオス部材が変形する機
会は少なくなる。よって、当該連結装置を装着した被連
結部材の搬入性・取扱性が向上する。しかも、通常は前
記オス部材側に設けられている前記芯部材は、前記メス
部材側に設けてあるから、前記オス部材の突出長さを、
前記メス部材と係合するために必要な最小長さに設定す
ることができる。この結果、前記囲繞部の深さ寸法、お
よび、前記メス部材の突出長さを短く設定できる。そし
て、前記オス部材の内部に嵌入した前記芯部材は、前記
メス部材から離脱し、前記オス部材と一体に移動する。
よって、前記オス部材に引抜き方向に力が作用した場合
でも、前記芯部材が前記オス部材の縮径を有効に防止す
るから、前記連結装置の連結強度が向上する。一方、メ
ス部材は凸状に形成されているものの、拡径変形機能を
有するものではなく、部材自身のサイズもオス部材に比
べて大きいから他物との接触による変形は生じにくい。
また、前記メス部材を突出形成すると、前記第1被連結
部材と前記第2被連結部材との間に剪断力が作用した際
に、当該剪断力に対する強度を向上させることができ
る。つまり、前記メス部材の断面積は、通常、前記オス
部材の断面積に比べて大きいから、負担し得る剪断力も
大きくなるからである。
【0006】
【発明の実施の形態】以下に本発明の実施例を図面に基
づいて説明する。本発明の連結装置は、例えば、トンネ
ル等を構築する際に用いられるダクタイルセグメントや
スチールセグメント、あるいは、コンクリートセグメン
ト(これらを総称して「セグメント」という)をトンネ
ル軸芯方向およびトンネル周方向に多数連結する場合な
どに用いる。
【0007】(概 要)本発明の連結装置を、図1から
図4に示す。当該連結装置は、図1に示すごとく、既に
設置されている第1被連結部材Aである第1セグメント
1の一側面に設けたオス部材3と、新たに接続する第2
被連結部材Bである第2セグメント2の他側面に設けた
メス部材4とで構成される。前記第1セグメント1と前
記第2セグメント2とを連結する際には、両者を押し付
けて前記オス部材3を前記メス部材4の内部に挿入さ
せ、前記オス部材3の先端部に設けた拡径可能部5を、
前記メス部材4側に設けた芯部材20で拡径することに
より、前記メス部材4と係合させる。これらオス部材3
と、メス部材4、芯部材20とで拡径機構が構成され
る。図2に示すごとく、本発明の連結装置においては、
前記オス部材3を取り囲む状態の囲繞部Cを前記第1セ
グメント1に形成し、一方、前記囲繞部Cに挿入自在で
あって、その内部に前記オス部材3を挿入させることが
可能なメス部材4を前記第2セグメント2に設けてい
る。即ち、前記オス部材3を前記囲繞部Cで取囲む構成
にして、前記オス部材3を有効に保護し、前記第1セグ
メント1等の運搬性・作業性を向上させている。
【0008】(オス部材)前記オス部材3の詳細を以下
に説明する。本実施の形態においては、図2、図3に示
すごとく、前記第1セグメント1に第1凹部6を形成
し、当該第1凹部6の周壁をもって前記囲繞部Cを構成
する。前記オス部材3は、前記第1凹部6の最奥部から
突出するように設け、前記第1凹部6の深さを、前記オ
ス部材3の突出長さよりも深く形成してある。これによ
り、前記オス部材3の先端が前記第1凹部6内に引退す
るから、前記オス部材3の保護が確実となる。本構成に
よれば、前記第1セグメントの連結面7を突出部材のな
い平滑面にできる。よって、トンネルを掘削する際に、
当該連結面7をシールドマシンのジャッキ反力受部とし
て使用する場合にも何ら支障がない。
【0009】前記オス部材3の全体形状は略円筒状を呈
する。その一端は、前記メス部材4に挿入して拡径され
る拡径可能部5をなし、他端は、前記第1セグメント1
に取付けるためのオス側胴部8をなす。前記オス側胴部
8の外面にはオス側ネジ部9が形成してある。一方、前
記第1凹部の底部10にはオス側取付穴11を形成して
あり、前記オス側胴部8を前記オス側取付穴11に挿入
させた後、オス側ナット部材12を前記オス側ネジ部9
に螺着して、前記オス部材3を前記第1セグメント1に
取付ける。前記オス側胴部8と前記拡径可能部5との境
界位置には、前記オス部材3の長手方向に垂直な面であ
って、前記オス側胴部8の方向を向くオス側段部13が
形成されている。前記オス側取付穴11への前記オス側
胴部8の挿入は、前記オス側段部13が、前記第1凹部
の底部10の表面に当接するまで行う。これにより、前
記底部10の表面からの前記オス部材3の突出長さが決
まる。本実施形態においては、前記オス部材3は、前記
第1セグメント1に対して相対移動不可能な状態に取付
けられる。尚、前記オス部材3を前記第1セグメント1
に取付けるには、この他に、嵌入、溶接など種々の方式
を用いることができる。
【0010】前記拡径可能部5には、図2に示すごと
く、前記オス部材3の長手方向に沿った複数条のスリッ
ト14を形成し、前記オス部材3をその周方向に分割し
た状態に形成してある。そして、前記拡径可能部5の基
端部には、前記拡径可能部5の拡径を更に容易にするた
めの薄肉部5Aを形成してある。これらの構成により、
前記拡径可能部5の拡径が容易となる。図2に示すごと
く、前記オス部材3の外形は、何れの部位の外径も略等
しい略円筒形状である。この構成によれば、前記メス部
材4への挿入が比較的容易であり、かつ、挿入後、前記
オス部材3を、後述する前記メス部材4の内面と当接さ
せるべく前記拡径可能部5の外面が略円錐状になるまで
拡径させる際の角度を比較的小さくできる。前記オス部
材3の先端部外面には、前記メス部材4への挿入を容易
にすべく、先細状のオス部材先端傾斜面15を形成して
ある。
【0011】(メス部材)次に、前記メス部材4の詳細
を以下に説明する。前記メス部材4は、図2に示すごと
く底部16を有する略筒状であり、前記第2セグメント
に対して当該第2セグメントの連結面17より突出した
状態に、メス側ネジ部18を用いて取付けられている。
この場合、前記第2セグメント2に形成された第2凹部
19に設けると、前記第1セグメント1と前記第2セグ
メント2との間に作用する剪断力の許容範囲を高めるた
めに都合がよい。つまり、前記メス部材4のうち最大外
径を有する部分で前記剪断力に対抗するから、従来の前
記オス部材3のみによって対抗する構造に比べて、より
大きい断面積で前記剪断力に対抗できるからである。本
構成により、前記第1セグメント1と前記第2セグメン
ト2との連結強度が格段に向上する。
【0012】前記メス部材4の底部16には、芯部材2
0が取付けられている。当該芯部材20は、前記オス部
材3と前記メス部材4との挿入に際し、前記拡径可能部
5の内部に進入して、前記拡径可能部5を拡径させるも
のである。従来の連結装置にあっては、前記芯部材20
は前記オス部材3の先端部に設けてあった。本発明にお
いては、当該芯部材20を前記メス部材4側に設けるこ
とで、前記オス部材3の突出長さを抑えている。これに
伴って、前記第1凹部6の深さ寸法、および、前記メス
部材4の突出長さも短くできる。そして、これらの構成
の結果、既設の前記第1セグメント1に対して前記第2
セグメント2とを押圧する際の動作ストロークが小さく
なるから作業効率が向上し、更には、トンネルを掘削す
るシールドマシンの構造等も簡略化できるという効果が
得られる。前記芯部材20の外面は、当該芯部材20の
押込み方向に窄まった円錐状に構成してある。これによ
り、前記芯部材20が前記拡径可能部5の内部に押込ま
れる際に、前記拡径可能部5の拡径が容易になる。尚、
前記芯部材20および前記拡径可能部5は、上記の形状
に限られるものではなく、例えば、前記芯部材20が単
なる半球状であり、前記拡径可能部5が前記スリット1
4等を有しない完全に一体の円筒であってもよい。要す
るに、前記拡径可能部5が前記芯部材20の作用によっ
て拡径するものであれば何れの形状を組合わせたもので
もよい。
【0013】前記メス部材4の内部には、前記オス部材
3と前記メス部材4との挿入操作によって拡径された前
記拡径可能部5の外面と当接して、前記オス部材3が前
記メス部材4から抜出るのを阻止する抜止部21が設け
られている。前記抜止部21の内面21Aは、前記オス
部材3の挿入方向、即ち、前記メス部材4の奥部に向か
って拡径した円錐状となっている。つまり、前記メス部
材4への挿入に伴って円錐状に拡径された前記拡径可能
部の外面5Bに対し、前記抜止部の内面21Aを略面接
触させて、前記オス部材3の抜出しを確実に阻止するも
のである。さらに、前記オス部材3の抜出しを阻止すべ
く、前記芯部材20は、前記メス部材4から離脱可能に
構成してある。図示は省略してあるが、例えば、前記芯
部材20を前記メス部材4の底部に単に粘着テープで取
付ける方法、あるいは、前記芯部材20の端部に設けた
凸部と、前記メス部材4の底部に設けた凹部とを、弾性
を有するO−リングを介して接続する方法等を用いるこ
とができる。これらの構成によれば、前記拡径可能部5
と前記芯部材20とが係合した後、前記オス部材3に引
抜力が作用した場合に、前記芯部材20は前記拡径可能
部5と一体移動可能となる。よって、前記拡径可能部5
が、前記抜止部21によって縮径変形されようとするの
を前記芯部材20が有効に阻止し、前記オス部材3と前
記メス部材4との連結状態が確実に維持できる。この
他、図示は省略してあるが、前記拡径可能部の外面5B
および前記抜止部の内面21Aが粗な状態に形成されて
いると、前記オス部材3の抜止め効果がより高まって都
合がよい。例えば、前記両外面5B,21Aに機械加工
を施したり、高硬度粒子を含む塗料を塗布することで粗
面に形成することができる。尚、前記メス部材4の先端
部外面には、前記第1凹部6との係合を容易にすべく先
細状のメス部材先端傾斜面22を形成してある。図2、
図3では、前記メス部材4の先端部のみを先細状に形成
しているが、前記メス部材4の外形全体を先細状にして
もよい。さらに、前記メス部材4の先端部内面側に傾斜
面を形成して前記オス部材3の挿入が容易となるように
構成してもよい。
【0014】[別実施形態]
〈1〉 上記実施例においては、前記メス部材4は、前
記第2セグメント2に固設する構成を示したが、前記メ
ス部材4は、図4に示すごとく、前記第2セグメント2
に対して相対移動可能に構成することもできる。そうす
れば、セグメントどうしの連結作業が容易に行なえる。
例えば、前記メス部材の底部16に融通穴23を形成
し、当該融通穴23を貫通する取付ボルトDによって、
前記メス部材4を前記第2セグメント2に取付ける。つ
まり、前記取付ボルトDを、前記融通穴23と、前記第
2セグメント2に形成されたメス側取付穴24とを貫通
させ、前記第2セグメント2の裏面側で、前記取付ボル
トDの外面に形成した取付ボルトネジ部25にメス側ナ
ット部材26を螺着する。前記融通穴23の内径φ1
は、前記取付ボルトの胴部27の外径φ2より大きく設
定する。この両者の差だけ、前記メス部材4は、前記取
付ボルトDの周囲において移動可能となる。当該取付ボ
ルトDにあっては、前記取付ボルトネジ部25の両端部
のうち前記取付ボルトDのヘッド部28側の端部に取付
ボルト段部29を形成してある。つまり、前記取付ボル
ト胴部の外径φ2より、前記取付ボルトネジ部25の外
径を小さく設定してある。本構成であれば、前記メス側
ナット部材26を前記取付ボルトネジ部25に螺合させ
るに際し、前記メス側ナット部材26が前記取付ボルト
段部29に当接した位置で前記メス側ナット部材26の
螺進が阻止される。この結果、前記取付ボルトのヘッド
部28と前記第2凹部19の底面との間隔が一定長さに
設定される。この設定長さを、例えば、前記メス部材底
部16の厚みよりやや小さく設定しておけば、前記メス
部材4は、前記第2セグメント2にガタなく取付けら
れ、かつ、所定の力が作用した場合には、前記第2セグ
メント2に対して摺動自在である。
【0015】以上の構成であれは、前記第1セグメント
1と前記第2セグメント2との連結作業が円滑に行え
る。即ち、セグメントに対する前記オス部材3あるいは
前記メス部材4の取付誤差や、前記第1セグメント1に
対する前記第2セグメント2の位置設定誤差が存在して
も前記メス部材4が移動可能であるから両者の挿入が容
易になる。前記メス部材4が他物と衝突した場合でも、
前記メス部材4が移動して衝撃を緩和するから変形防止
効果がさらに高まる。また、前記第1セグメント1に対
し、両者の連結面に沿って前記第2セグメント2が摺動
可能であれば、前記第1セグメント1と前記第2セグメ
ント2とを連結した後に、前記第2セグメント2に対し
てさらに別のセグメントを連結する際にも、全てのセグ
メントの取合い関係を調整し得るから好都合である。例
えばトンネルを構築するに際し、既に第1セグメント1
によって組まれたセグメントリングに対して、前記第2
セグメント2をトンネル軸芯方向から連結し、かつ、複
数の第2セグメント2を順次周方向に連結して次のセグ
メントリングを構築する場合を想定する。この場合、最
後の第2セグメント2を設置する際には、通常、当該最
後の第2セグメント2と最初に設置された第2セグメン
ト2とを引き寄せて連結する必要がある。本発明の構成
であれば、前記第1セグメント1に対して前記第2セグ
メント2が相対移動可能であるから、最後の第2セグメ
ント2を連結する際に、最初の第2セグメント2との間
に隙間を生じることがない。尚、移動可能に構成するの
は前記メス部材4に限られるものではない。前記オス部
材3が移動する構成であってもよく、さらには、前記メ
ス部材4および前記オス部材3の双方が移動する構成で
あってもよい。
【0016】〈2〉 上記実施形態における前記第1セ
グメント1および前記第2セグメント2は、セグメント
そのものであってもよいし、コンクリートセグメントに
埋設された接続部材等であってもよい。
【0017】尚、特許請求の範囲の項に、図面との対照
を便利にするために符号を記すが、該記入により本発明
は添付図面の構成に限定されるものではない。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a male member provided on a first member to be connected, and a female member into which the male member can be inserted is provided in a second member to be connected. By inserting the male member into the female member, the first connected member and the second connected member are configured to be freely connectable to each other, the male member is formed in a substantially cylindrical shape, and the male member is formed. As the male member is inserted into the female member, a diameter-enlarging mechanism is provided in which the distal end of the male member is expanded, and the male member comes into contact with the outer surface of the expanded male member so that the male member is connected to the female member. The present invention relates to a coupling device provided with a retaining portion for preventing the female member from coming out of the female member. 2. Description of the Related Art A connecting device of this type is used, for example, for connecting shield segments forming a tunnel, and one such device is disclosed in Japanese Patent Application Laid-Open No. Hei 7-34785. That is, as shown in FIG. 5, the connecting device connects the shield segments forming a tunnel. One of the segments 31 is provided with a male member 32, and the other end of the male member 32 is provided with a cone member 33. Is inserted, and the male member 32 is inserted into the female member 35 provided on the other segment 34 which has already been installed.
Are connected. When the male member 32 and the cone member 33 are inserted into the female member 35 to a predetermined depth, the cone member 33 is moved to the bottom surface 36 of the female member 35.
When the male member 32 is further inserted, the distal end of the male member 32 is expanded along the surface of the cone member 33. As a result, the distal end portion of the male member 32 is restrained by the inner surface 37 of the female member 35 and is fixed so as not to come off. [0003] However, according to the above-mentioned conventional connecting device, there is a problem that the transportability and the handling of a segment or the like provided with the connecting device are poor. That is, since the male member 32 is attached so as to protrude from one of the segments 31, the male member 32 may erroneously come into contact with another object, for example, during transportation of the segment. The male member 32 may be deformed and become unusable. In addition, since the cone member 33 is normally mounted so as to protrude from all ends of the male member 32, the length of the male member 32 protruding further increases. Therefore, the above-mentioned inconvenience was promoted. [0004] It is an object of the present invention to solve the above-mentioned drawbacks of the prior art, and to provide a connecting device capable of performing a connecting operation smoothly while having excellent transportability and handleability. Means for Solving the Problems [0005] (Structure 1) A feature structure of the present invention for achieving this object is that a surrounding portion surrounding a male member is formed by a first member. Provided on the connected member, the male member is attached to the inside of the surrounding portion in a retracted state, and the female member is formed in a convex shape that can be inserted into the internal space of the surrounding portion, and inside the female member, The present invention is characterized in that a core member constituting a part of the diameter expanding mechanism is detachably provided from the female member. (Operation / Effect) According to the connecting device of this configuration, since the male member is protected by the surrounding portion, even if the first connected member is accidentally brought into contact with another object, the male member is less likely to be deformed. Become. Therefore, the carrying property and the handling property of the connected member to which the connecting device is mounted are improved. Moreover, since the core member normally provided on the male member side is provided on the female member side, the projecting length of the male member is
The minimum length required to engage the female member can be set. As a result, the depth dimension of the surrounding portion and the protruding length of the female member can be set short. Then, the core member fitted into the male member is separated from the female member and moves integrally with the male member.
Therefore, even when a force acts on the male member in the pulling-out direction, the core member effectively prevents the male member from reducing in diameter, so that the connection strength of the connection device is improved. On the other hand, although the female member is formed in a convex shape, it does not have the function of expanding and deforming the diameter, and the member itself is larger in size than the male member, so that deformation due to contact with other objects hardly occurs.
Further, when the female member is formed so as to protrude, when a shearing force acts between the first connected member and the second connected member, the strength against the shearing force can be improved. That is, since the cross-sectional area of the female member is usually larger than the cross-sectional area of the male member, the shearing force that can be borne is also increased. Embodiments of the present invention will be described below with reference to the drawings. The connecting device of the present invention includes, for example, a large number of ductile segments, steel segments, or concrete segments (collectively referred to as “segments”) used in constructing a tunnel or the like in a tunnel axial direction and a tunnel circumferential direction. Used when linking. (Outline) FIGS. 1 to 4 show a connecting device of the present invention. As shown in FIG. 1, the connecting device newly connects a male member 3 provided on one side surface of the first segment 1, which is the first connected member A, which is already installed.
A female member 4 provided on the other side surface of the second segment 2 which is the connected member B. When connecting the first segment 1 and the second segment 2, the male member 3 is inserted into the female member 4 by pressing them together, and the diameter expansion provided at the distal end of the male member 3 is performed. Possible part 5,
By expanding the diameter with the core member 20 provided on the female member 4 side, the female member 4 is engaged. These male members 3
, The female member 4 and the core member 20 constitute a diameter expansion mechanism. As shown in FIG. 2, in the connecting device of the present invention,
A surrounding member C surrounding the male member 3 is formed in the first segment 1, while a female member that is insertable into the surrounding member C and into which the male member 3 can be inserted. 4 is provided in the second segment 2. That is, the male member 3 is configured to be surrounded by the surrounding portion C to effectively protect the male member 3 and improve the transportability and workability of the first segment 1 and the like. (Male member) The details of the male member 3 will be described below. In the present embodiment, as shown in FIGS. 2 and 3, a first concave portion 6 is formed in the first segment 1, and a surrounding wall of the first concave portion 6 constitutes the surrounding portion C. The male member 3 is provided so as to protrude from the innermost part of the first concave portion 6, and the depth of the first concave portion 6 is formed to be deeper than the protruding length of the male member 3. Thereby, since the tip of the male member 3 retreats into the first concave portion 6, the protection of the male member 3 is ensured. According to this configuration, the connecting surface 7 of the first segment can be a smooth surface without a protruding member. Therefore, when digging a tunnel,
There is no problem in using the connecting surface 7 as a jack reaction force receiving portion of the shield machine. The overall shape of the male member 3 is substantially cylindrical. One end forms a diameter-expandable portion 5 that is inserted into the female member 4 and expanded in diameter.
A male body 8 for attaching to the main body. A male screw portion 9 is formed on the outer surface of the male body 8. On the other hand, a male-side mounting hole 11 is formed in the bottom portion 10 of the first concave portion. After the male-side body 8 is inserted into the male-side mounting hole 11, the male-side nut member 12 is connected to the male-side mounting hole 11. Screw part 9
And the male member 3 is attached to the first segment 1. At a boundary position between the male body 8 and the diameter-expandable portion 5, a male side step portion 13 which is a surface perpendicular to the longitudinal direction of the male member 3 and faces in the direction of the male body 8. Is formed. The insertion of the male-side body 8 into the male-side mounting hole 11 is performed until the male-side step 13 contacts the surface of the bottom 10 of the first recess. Thus, the length of the protrusion of the male member 3 from the surface of the bottom portion 10 is determined. In the present embodiment, the male member 3 is attached in a state in which the male member 3 cannot move relative to the first segment 1. The male member 3 is connected to the first segment 1
In addition, various methods such as fitting and welding can be used. As shown in FIG. 2, a plurality of slits 14 are formed in the expandable portion 5 along the longitudinal direction of the male member 3 so that the male member 3 is divided in the circumferential direction. It is formed. At the base end of the expandable portion 5, a thin portion 5A is formed to further facilitate the expansion of the expandable portion 5. With these configurations,
The diameter of the diameter-expandable portion 5 can be easily expanded. As shown in FIG. 2, the external shape of the male member 3 is a substantially cylindrical shape in which the outer diameters of all the portions are substantially equal. According to this configuration, the insertion into the female member 4 is relatively easy, and after the insertion, the male member 3 is brought into contact with an inner surface of the female member 4 to be described later. The angle at the time of expanding the diameter until the outer surface becomes substantially conical can be made relatively small. On the outer surface of the distal end portion of the male member 3, a tapered male member distal inclined surface 15 is formed to facilitate insertion into the female member 4. (Scalpel Member) Next, details of the knife member 4 will be described below. As shown in FIG. 2, the female member 4 has a substantially cylindrical shape having a bottom portion 16, and is provided with a female screw portion 18 in a state where the female member 4 projects from the connection surface 17 of the second segment with respect to the second segment. Installed.
In this case, when provided in the second concave portion 19 formed in the second segment 2, it is convenient to increase the allowable range of the shearing force acting between the first segment 1 and the second segment 2. That is, since the portion having the maximum outer diameter of the female member 4 opposes the shearing force, it can oppose the shearing force with a larger cross-sectional area than a conventional structure opposing only by the male member 3. It is. With this configuration, the connection strength between the first segment 1 and the second segment 2 is significantly improved. At the bottom 16 of the female member 4, the core member 2
0 is attached. When inserting the male member 3 and the female member 4, the core member 20 enters the inside of the diameter-expandable portion 5 to expand the diameter of the diameter-expandable portion 5. In the conventional connecting device, the core member 20
Is provided at the tip of the male member 3. In the present invention, the protrusion length of the male member 3 is suppressed by providing the core member 20 on the female member 4 side. Along with this, the depth dimension of the first recess 6 and the projecting length of the female member 4 can be shortened. As a result of these configurations, the second segment is
Since the operation stroke at the time of pressing the segment 2 is reduced, the working efficiency is improved, and further, the effect is obtained that the structure of the shield machine for excavating the tunnel can be simplified. The outer surface of the core member 20 is formed in a conical shape narrowed in the pushing direction of the core member 20. Thereby, when the core member 20 is pushed into the inside of the diameter-expandable portion 5, the diameter of the diameter-expandable portion 5 is easily increased. still,
The core member 20 and the diameter-expandable portion 5 are not limited to the above shapes. For example, the core member 20 is simply a hemisphere, and the diameter-expandable portion 5 is
It may be a completely integrated cylinder without 4 or the like. In short, any combination of shapes may be used as long as the diameter-expandable portion 5 expands its diameter by the action of the core member 20. Inside the female member 4, the male member 3 comes into contact with the outer surface of the expandable portion 5 whose diameter has been expanded by the insertion operation of the male member 3 and the female member 4, so that the male member 3 A retaining portion 21 that prevents the member 4 from being pulled out is provided. The inner surface 21 </ b> A of the retaining portion 21 has a conical shape whose diameter increases toward the insertion direction of the male member 3, that is, toward the inner part of the female member 4. That is, the inner surface 21A of the retaining portion is brought into substantially surface contact with the outer surface 5B of the diameter-expandable portion that has been conically expanded with insertion into the female member 4, and the male member 3 is extracted. It surely blocks it. Further, the core member 20 is configured to be detachable from the female member 4 so as to prevent the male member 3 from being pulled out. Although illustration is omitted, for example, a method of simply attaching the core member 20 to the bottom of the female member 4 with an adhesive tape, or a convex portion provided at an end of the core member 20 and the female member 4 A method of connecting the concave portion provided on the bottom portion with an O-ring having elasticity or the like can be used. According to these configurations, the diameter-expandable portion 5
After the male member 3 is engaged with the core member 20 after the engagement between the core member 20 and the core member 20, the core member 20 can move integrally with the diameter-expandable portion 5. Therefore, the diameter-expandable portion 5
However, the core member 20 effectively prevents the diameter of the core member 20 from being reduced by the retaining portion 21, and the connection between the male member 3 and the female member 4 can be reliably maintained. In addition, although not shown, the outer surface 5B of the diameter-expandable portion is not shown.
If the inner surface 21A of the retaining portion is formed in a rough state, the retaining effect of the male member 3 is further enhanced, which is convenient. For example, a rough surface can be formed by machining the outer surfaces 5B and 21A or applying a paint containing high-hardness particles. In addition, a tapered female member tip inclined surface 22 is formed on the outer surface of the distal end portion of the female member 4 to facilitate engagement with the first concave portion 6. FIG.
In FIG. 3, only the distal end of the female member 4 is tapered, but the entire outer shape of the female member 4 may be tapered. Further, an inclined surface may be formed on the inner surface of the distal end portion of the female member 4 so that the male member 3 can be easily inserted. Alternative Embodiment <1> In the above embodiment, the configuration in which the female member 4 is fixed to the second segment 2 has been described. However, as shown in FIG. The second segment 2
May be configured to be relatively movable with respect to. Then, the connection operation between the segments can be easily performed.
For example, a through hole 23 is formed in the bottom 16 of the female member, and a mounting bolt D penetrates through the through hole 23.
The female member 4 is attached to the second segment 2. That is, the mounting bolt D is passed through the accommodating hole 23 and the female-side mounting hole 24 formed in the second segment 2, and is attached to the outer surface of the mounting bolt D on the back side of the second segment 2. The female nut member 26 is screwed into the formed mounting bolt screw portion 25. Inner diameter φ1 of the through hole 23
Is set to be larger than the outer diameter φ2 of the body 27 of the mounting bolt. The female member 4 can move around the mounting bolt D by the difference between the two. In the mounting bolt D, a mounting bolt step 29 is formed at an end of the mounting bolt D on the head portion 28 side of both ends of the mounting bolt screw portion 25. That is, the outer diameter of the mounting bolt screw portion 25 is set smaller than the outer diameter φ2 of the mounting bolt body. With this configuration, when the female nut member 26 is screwed into the mounting bolt screw portion 25, the female nut member 26 is positioned at a position where the female nut member 26 abuts the mounting bolt step 29. Screwing is prevented. As a result, the distance between the head portion 28 of the mounting bolt and the bottom surface of the second concave portion 19 is set to a fixed length. If this set length is set to be slightly smaller than the thickness of the female member bottom portion 16, for example, the female member 4 is attached to the second segment 2 without play and a predetermined force is applied. Is slidable with respect to the second segment 2. With the above configuration, the connecting operation between the first segment 1 and the second segment 2 can be performed smoothly. That is, even if there is an attachment error of the male member 3 or the female member 4 with respect to the segment or a position setting error of the second segment 2 with respect to the first segment 1, the female member 4 can move. Insertion becomes easy. Even when the female member 4 collides with another object,
Since the female member 4 moves to reduce the impact, the effect of preventing deformation is further enhanced. If the second segment 2 is slidable with respect to the first segment 1 along the connection surface between the two, after the first segment 1 and the second segment 2 are connected, the second segment 2 When another segment is connected to the segment 2, it is convenient because the arrangement of all the segments can be adjusted. For example, when constructing a tunnel, the first segment 1
For the segment ring formed by the second
Assume that the next segment ring is constructed by connecting the segments 2 from the tunnel axis direction and sequentially connecting a plurality of second segments 2 in the circumferential direction. In this case, when the last second segment 2 is installed, it is usually necessary to draw and connect the last second segment 2 and the second segment 2 installed first. According to the configuration of the present invention, since the second segment 2 is relatively movable with respect to the first segment 1, when connecting the last second segment 2, the first second segment 2 is connected to the first second segment 2. There is no gap in the space. The movable member is not limited to the female member 4. The male member 3 may be configured to move, and further, both the female member 4 and the male member 3 may be configured to move. <2> The first segment 1 and the second segment 2 in the above embodiment may be segments themselves, or may be connection members embedded in a concrete segment. In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.
【図面の簡単な説明】
【図1】本発明に係る連結装置の使用例を示す説明図
【図2】本発明に係る連結装置の連結前の状態を示す縦
断面図
【図3】本発明に係る連結装置の連結後の状態を示す縦
断面図
【図4】別実施形態に係るメス側部材の構成を示す縦断
面図
【図5】従来技術に係る連結装置の使用例を示す説明図
【符号の説明】
3 オス部材
4 メス部材
20 芯部材
21 抜止部
A 第1被連結部材
B 第2被連結部材
C 囲繞部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing an example of use of a connecting device according to the present invention. FIG. 2 is a longitudinal sectional view showing a state before connecting the connecting device according to the present invention. FIG. 4 is a vertical cross-sectional view showing a state of a connecting device according to another embodiment after connection. FIG. 4 is a vertical cross-sectional view showing a configuration of a female side member according to another embodiment. [Description of Signs] 3 Male member 4 Female member 20 Core member 21 Detachable portion A First connected member B Second connected member C Surrounding portion
───────────────────────────────────────────────────── フロントページの続き (72)発明者 東原 英樹 兵庫県尼崎市浜1丁目1番1号 株式会 社クボタ 技術開発研究所内 (72)発明者 今野 勉 大阪府大阪市大正区南恩加島7丁目1番 22号 株式会社クボタ 恩加島工場内 (56)参考文献 特開 平7−34785(JP,A) 特開 平7−247796(JP,A) 米国特許4830536(US,A) (58)調査した分野(Int.Cl.7,DB名) E21D 11/04 E21D 11/08 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hideki Higashihara 1-1-1, Hama, Amagasaki-shi, Hyogo Prefecture Inside Kubota Technology Development Laboratory Co., Ltd. (72) Inventor Tsutomu Konno 7-chome Minamienkajima, Taisho-ku, Osaka-shi, Osaka No. 22 No. 22 in Kubota Enkajima Plant (56) References JP-A-7-34785 (JP, A) JP-A-7-247796 (JP, A) US Patent 4,830,536 (US, A) (58) Survey Field (Int.Cl. 7 , DB name) E21D 11/04 E21D 11/08
Claims (1)
を設け、第2被連結部材(B)に前記オス部材(3)が
入込み可能なメス部材(4)を設けて、前記オス部材
(3)を前記メス部材(4)に挿入することにより、前
記第1被連結部材(A)および前記第2被連結部材
(B)を互いに連結自在に構成し、 前記オス部材(3)を略筒形状に形成すると共に、前記
オス部材(3)が前記メス部材(4)に挿入されるに伴
って、前記オス部材(3)の先端部が拡径される拡径機
構を設け、拡径された前記オス部材(3)の外面と当接
して、前記オス部材(3)が前記メス部材(4)から抜
け出るのを阻止する抜止部(21)を前記メス部材
(4)に設けてある連結装置であって、 前記オス部材(3)の周囲を取囲む囲繞部(C)を前記
第1被連結部材(A)に設けて、前記オス部材(3)を
前記囲繞部(C)の内部に引退した状態で取付け、 前記メス部材(4)を前記囲繞部(C)の内部空間に挿
入自在な凸状に形成すると共に、前記メス部材(4)の
内部に、前記拡径機構の一部を構成する芯部材(20)
を前記メス部材(4)から離脱自在に取付けてある連結
装置。(57) [Claim 1] A male member (3) is attached to the first connected member (A).
By providing a female member (4) into which the male member (3) can be inserted into the second connected member (B), and inserting the male member (3) into the female member (4), The first connected member (A) and the second connected member (B) are configured to be freely connectable to each other, and the male member (3) is formed in a substantially cylindrical shape. As the male member (3) is inserted into the female member (4), a diameter-expanding mechanism is provided for expanding the distal end of the male member (3), and comes into contact with the outer surface of the enlarged male member (3). A coupling device in which a retaining portion (21) for preventing the male member (3) from falling out of the female member (4) is provided on the female member (4). A surrounding portion (C) is provided on the first connected member (A) to surround the male member (3). The female member (4) is attached to the inside of the portion (C) in a retracted state, and the female member (4) is formed in a convex shape that can be inserted into the internal space of the surrounding portion (C). Core member (20) constituting a part of the diameter expanding mechanism
Is detachably attached to the female member (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32271795A JP3534513B2 (en) | 1995-12-12 | 1995-12-12 | Coupling device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32271795A JP3534513B2 (en) | 1995-12-12 | 1995-12-12 | Coupling device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09158686A JPH09158686A (en) | 1997-06-17 |
JP3534513B2 true JP3534513B2 (en) | 2004-06-07 |
Family
ID=18146845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32271795A Expired - Lifetime JP3534513B2 (en) | 1995-12-12 | 1995-12-12 | Coupling device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3534513B2 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4830536A (en) * | 1981-08-07 | 1989-05-16 | Commercial Shearing, Inc. | Method and apparatus for tunnel lining |
JP2582213B2 (en) * | 1993-02-19 | 1997-02-19 | 鹿島建設株式会社 | Shield segment connection method and its joint device |
JP3340838B2 (en) * | 1994-03-11 | 2002-11-05 | 東京都 | Joint fittings for road segments |
-
1995
- 1995-12-12 JP JP32271795A patent/JP3534513B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH09158686A (en) | 1997-06-17 |
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