JP4814059B2 - CONNECTING DEVICE AND CONCRETE MEMBER CONNECTING DEVICE USING THE SAME - Google Patents

CONNECTING DEVICE AND CONCRETE MEMBER CONNECTING DEVICE USING THE SAME Download PDF

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JP4814059B2
JP4814059B2 JP2006303156A JP2006303156A JP4814059B2 JP 4814059 B2 JP4814059 B2 JP 4814059B2 JP 2006303156 A JP2006303156 A JP 2006303156A JP 2006303156 A JP2006303156 A JP 2006303156A JP 4814059 B2 JP4814059 B2 JP 4814059B2
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栄次 山西
晃 椙山
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株式会社三ツ知
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Description

本発明は連結具及びそれを用いたコンクリート部材の連結装置に関する。   The present invention relates to a coupler and a concrete member coupling apparatus using the coupler.

従来、部材相互の連結具として図１０に示すように、内部にテーパ穴１０１を形成するとともに、そのテーパ穴１０１の内面に軸方向に沿った摺動案内突条を周方向に分割して複数形成したケーシング１０３と、外面を前記テーパ穴１０１に沿うテーパ面１０２に形成するとともに内面に雌ねじ１０４を形成した雌型係止部材（楔ナット）１０５と、この楔ナット１０５を押圧する圧縮バネ１０６とで構成された雌型連結部材１０７と、該雌型連結部材１０７の雌ねじ１０４と噛合する雄ねじ１０８を刻設した雄型係止部材１０９を先部に有する雄型連結部材１１０とからなる連結具が知られている。   Conventionally, as shown in FIG. 10, as a connecting member between members, a tapered hole 101 is formed inside, and a plurality of sliding guide protrusions along the axial direction are divided in the circumferential direction on the inner surface of the tapered hole 101. The formed casing 103, a female locking member (wedge nut) 105 having an outer surface formed on a tapered surface 102 along the tapered hole 101 and having an internal thread 104 formed on the inner surface, and a compression spring 106 that presses the wedge nut 105 And a male coupling member 110 having a male locking member 109 with a male screw 108 engraved with a male screw 108 engaged with the female screw 104 of the female coupling member 107 at the tip. Ingredients are known.

そして、この連結具における連結に際しては、その雌型連結部材１０７を回転することなく該雌型連結部材１０７に前記雄型係止部材１０９を挿通することにより、分割された楔ナット１０５の雌ねじ１０４が雄型係止部材１０９の雄ねじ１０８に係合してその楔ナット１０５が圧縮バネ１０６に抗して大径側へ押され、複数個の楔ナット１０５で形成される雌ねじ孔の内径が拡径して雄型係止部材１０９を雌型連結部材１０７の所定位置まで挿通でき、その挿通が終ると、圧縮バネ１０６の付勢力によって楔ナット１０５の雌ねじ１０４が雄型係止部材１０９の雄ねじ１０８に噛合し、雌型連結部材１０７と雄型連結部材１１０の連結が行われるようになっている（例えば、特許文献１参照）。
特開２００６−１４５０２３号公報 Then, when connecting with this connecting tool, the male locking member 109 is inserted into the female connecting member 107 without rotating the female connecting member 107, whereby the female screw 104 of the divided wedge nut 105 is inserted. Engages with the male screw 108 of the male locking member 109 and the wedge nut 105 is pushed to the large diameter side against the compression spring 106, and the inner diameter of the female screw hole formed by the plurality of wedge nuts 105 is increased. The male locking member 109 can be inserted to a predetermined position of the female connecting member 107 and when the insertion is finished, the female screw 104 of the wedge nut 105 is moved by the urging force of the compression spring 106 to the male screw of the male locking member 109. 108, the female connecting member 107 and the male connecting member 110 are connected (for example, see Patent Document 1).
JP 2006-145023 A

ところで、前記のように構成された連結具を用いて、例えば、トンネルに用いるコンクリート製のシールドセグメント相互を連結する要望がある。この場合、図１１に示すように、前記連結具の雌型連結部材１０７を一方のシールドセグメント１１１に設け、雄型連結部材１１０を他方のシールドセグメント１１２に設ける。雄型連結部材１１０及び雌型連結部材１０７は、シールドセグメント１１１、１１２のトンネルの進行方向に該当する面のみに埋設され、トンネルの周方向に該当する面には埋設されず、周方向のシールドセグメント間は、コッター等を用いて連結される。   By the way, there is a demand for connecting the shield segments made of concrete, for example, used for a tunnel, using the connecting tool configured as described above. In this case, as shown in FIG. 11, the female connecting member 107 of the connector is provided on one shield segment 111 and the male connecting member 110 is provided on the other shield segment 112. The male connection member 110 and the female connection member 107 are embedded only in the surface corresponding to the traveling direction of the tunnel of the shield segments 111 and 112, and are not embedded in the surface corresponding to the circumferential direction of the tunnel. The segments are connected using a cotter or the like.

また、シールドセグメントを用いてトンネルを形成する際、先ず、地中をシールドマシンで掘削し、その後、連結装置により一方の側端のみが前方（進行方向）Ａにテーパ面で拡径するシールドセグメント２０１を後段の連結リング２０２の所定の位置に連結し、その後周方向にシールドセグメントを順に連結していった後、他方の側端のみが前方Ａにテーパ面で拡径するシールドセグメント２０３を連結し、両側端が前方Ａにテーパ面で拡径するその段における最後の台形のシールドセグメント２０５を連結し、その段の連結リングが完成する。その後、連結装置を前方に移動させて、次の段の連結リングを構成するシールドセグメントを連結させていく。   Further, when forming a tunnel using a shield segment, first, the underground is excavated by a shield machine, and then only one side end is expanded in a forward (traveling direction) A with a tapered surface by a coupling device. 201 is connected to a predetermined position of the connecting ring 202 at the rear stage, and then the shield segments are sequentially connected in the circumferential direction, and then the shield segment 203 whose diameter is expanded to the front A by a tapered surface is connected. Then, the last trapezoidal shield segment 205 at the stage where both side ends expand to the front A with a tapered surface is coupled, and the coupling ring at the stage is completed. Thereafter, the connecting device is moved forward to connect the shield segments constituting the next stage connecting ring.

トンネルは、通常、山や、地中の地下深くに設置されるため、トンネルには、その周囲から大きな土圧が加わり、前記台形のシールドセグメント２０５に、そのテーパ面２０６によって前方Ａに押す力が加わる。しかし、従来の連結具（雄型連結部材１１０及び雌型連結部材１０７）は、図１３（ａ）に示すように、雄型連結部材１１０と雌型連結部材１０７の連結時におけるガタ等により、引き抜き方向に引張荷重が加わるほど、目開き量が増加するため、前述のように大きな土圧がトンネルに作用している状態で、台形のシールドセグメント２０５を連結した後に、連結装置を前方Ａに移動させると、台形のシールドセグメント２０５が土圧により前方Ａに若干移動し、図１２（ｂ）に示すように後段の連結リング２０２との間に約５ｍｍ程度の目開き（段差）Ｄが生じてしまうことがある。このように段差Ｄが生じると、次段の連結リングを構成するシールドセグメント２０７との間にも段差Ｄが生じ、シールドセグメント２０７を組付けすることが困難となることがある。   Since a tunnel is usually installed deep in a mountain or underground, a large earth pressure is applied to the tunnel from its surroundings, and the force that pushes the trapezoidal shield segment 205 forward A by its tapered surface 206. Will be added. However, the conventional coupling tool (male coupling member 110 and female coupling member 107), as shown in FIG. 13 (a), due to looseness at the time of coupling the male coupling member 110 and the female coupling member 107, As the tensile load is applied in the pull-out direction, the amount of opening increases. Therefore, after connecting the trapezoidal shield segment 205 with the large earth pressure acting on the tunnel as described above, the connecting device is moved to the front A. When moved, the trapezoidal shield segment 205 slightly moves forward A due to earth pressure, and an opening (step) D of about 5 mm is formed between the connection ring 202 at the rear stage as shown in FIG. May end up. When the step D is generated in this way, the step D is generated between the shield segment 207 constituting the connecting ring of the next stage, and it may be difficult to assemble the shield segment 207.

そこで本発明は、トンネル等の施工中における、シールドセグメント相互の連結後の、そのシールドセグメント間の目開きをできる限り小さくする連結具を提供することを目的とするものである。   Therefore, an object of the present invention is to provide a connector that makes the opening between the shield segments as small as possible after connecting the shield segments during construction of a tunnel or the like.

前記課題を解決するために、請求項１記載の発明は、先部に雄型係止部材を有する雄型連結部材と雌型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を形成し、該収納室に、前記雄型係止部材を挿入することにより、該雄型係止部材を係止する雌型係止部材を設け、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、該雄型係止部材の抜けを抑制する抜止部材を設けたことを特徴とする連結具である。 In order to solve the above-mentioned problem, the invention according to claim 1 is composed of a male connecting member and a female connecting member each having a male locking member at a front portion thereof.
A female-type latch that forms a storage chamber with an open end inside the female-type connecting member, and that locks the male-type locking member by inserting the male-type locking member into the storage chamber. A member,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. when the biases of the male locking member in the insertion direction, a coupling which is characterized in that a suppressing stop member detachment of the male engagement member.

請求項２記載の発明は、雌型連結部材と雄型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を設け、該収納室内に、係止山及び係止溝を交互に形成してなる係止部を内面側に刻設した雌型係止部材を設けるとともに、
前記雄型連結部材の先部に、係止山及び係止谷を交互に形成してなる係止部を外面に刻設した雄型係止部材を設け、
前記雌型係止部材間に前記雄型係止部材を挿入することにより、前記雌型係止部材により構成される係止穴が拡径した後に、付勢手段により前記係止穴が縮径し前記雌型係止部材の係止部と、前記雄型係止部材の係止部とが噛合するようにした連結具であって、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、雄型係止部材の抜けを抑制する抜止部材を設けたことを特徴とする連結具である。 The invention according to claim 2 comprises a female connecting member and a male connecting member,
A female mold member in which a storage chamber having an opening at the tip is provided inside the female coupling member, and a locking portion formed by alternately forming a locking mountain and a locking groove on the inner surface side is provided in the storage chamber. While providing a stop member,
A male locking member having a locking portion formed by alternately forming locking peaks and locking valleys on the outer surface is provided at the tip of the male connecting member,
By inserting the male locking member between the female locking members, the locking hole constituted by the female locking member is expanded in diameter, and then the locking hole is reduced in diameter by the biasing means. And a coupling tool in which the locking portion of the female locking member and the locking portion of the male locking member are engaged with each other,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. In this case, there is provided a connection member provided with a retaining member that urges the male locking member in the insertion direction to prevent the male locking member from coming off.

請求項３記載の発明は、雌型連結部材と雄型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を設け、該収納室内に、先端側から 奥部側に向って内径が徐々に拡径する係止部を内面側に形成した雌型係止部材を設けるとともに、
前記雄型連結部材の先部に、先部から奥部に向かって縮径する係止部を外面に形成した雄型係止部材を設け、
前記雌型係止部材間に前記雄型連結部材を挿入することにより、前記雌型係止部材により構成される係止穴が拡径した後に、付勢手段により前記係止穴が縮径し前記雌型係止部材の係止部と、前記雄型係止部材の係止部とが係合するようにした連結具であって、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、雄型係止部材の抜けを抑制する抜止部材を設けたことを特徴とする連結具である。 Invention of Claim 3 consists of a female type | mold connection member and a male type | mold connection member,
A female mold in which a storage chamber having an opening at the tip is provided inside the female connecting member, and a locking portion whose inner diameter gradually increases from the tip toward the back is formed on the inner surface of the storage chamber. While providing a locking member,
At the front part of the male connecting member, a male locking member is provided with a locking part formed on the outer surface, the diameter of which decreases from the front part toward the back part.
By inserting the male coupling member between the female locking members, the locking hole constituted by the female locking member is expanded in diameter, and then the locking hole is reduced in diameter by the urging means. A coupling tool in which a locking portion of the female locking member and a locking portion of the male locking member are engaged,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. In this case, there is provided a connection member provided with a retaining member that urges the male locking member in the insertion direction to prevent the male locking member from coming off.

請求項４記載の発明は、請求項１乃至３のいずれか１項に記載の連結具において、前記抜止部材は、プッシュナット又はスピードナットであることを特徴とするものである。   According to a fourth aspect of the present invention, in the connector according to any one of the first to third aspects, the retaining member is a push nut or a speed nut.

請求項５記載の発明は、雌型連結部材と雄型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を設け、該収納室内に、係止山及び係止谷を交互に形成してなる係止部を内面側に刻設した雌型係止部材を設けるとともに、
前記雄型連結部材の先部に、係止山及び係止溝を交互に形成してなる係止部を外面に刻設した雄型係止部材を設け、
前記雌型係止部材間に前記雄型係止部材を挿入することにより、前記雌型係止部材により構成される係止穴が拡径した後に、付勢手段により前記係止穴が縮径し前記雌型係止部材の係止部と、前記雄型係止部材の係止部とが噛合するようにし、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、雄型係止部材の抜けを抑制する抜止部材を設けた連結具を使用し、
前記雌型連結部材を、連結すべき一方のコンクリート部材に固設し、前記雄型連結部材を連結すべき他方のコンクリート部材に固設したことを特徴とするコンクリート部材の連結装置である。 The invention according to claim 5 comprises a female connecting member and a male connecting member,
A female engagement member in which a storage chamber having an opening at the tip is provided inside the female connection member, and a locking portion formed by alternately forming a locking peak and a locking valley is formed on the inner surface side in the storage chamber. While providing a stop member,
A male locking member having a locking portion formed by alternately forming a locking mountain and a locking groove on the outer surface is provided at the tip of the male connecting member,
By inserting the male locking member between the female locking members, the locking hole constituted by the female locking member is expanded in diameter, and then the locking hole is reduced in diameter by the biasing means. The engaging portion of the female locking member and the locking portion of the male locking member are engaged with each other,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. When using the connector provided with a retaining member that urges the male locking member in the insertion direction to prevent the male locking member from coming off,
The female-type connecting member is fixed to one concrete member to be connected, and the male-type connecting member is fixed to the other concrete member to be connected.

請求項６記載の発明は、雌型連結部材と雄型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を設け、該収納室内に、先端側から奥部側に向って内径が徐々に拡径する係止部を内面側に形成した雌型係止部材を設けるとともに、
前記雄型連結部材の先部に、先部から奥部に向かって縮径する係止部を外面に形成した雄型係止部材を設け、
前記雌型係止部材間に前記雄型係止部材を挿入することにより、前記雌型係止部材により構成される係止穴が拡径した後に、付勢手段により前記係止穴が縮径し前記雌型係止部材の係止部と、前記雄型係止部材の係止部とが係合するようにし、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、雄型係止部材の抜けを抑制する抜止部材を設けた連結具を使用し、
前記雌型連結部材を、連結すべき一方のコンクリート部材に固設し、前記雄型連結部材を連結すべき他方のコンクリート部材に固設したことを特徴とするコンクリート部材の連結装置である。 The invention according to claim 6 comprises a female connecting member and a male connecting member,
A female mold in which a storage chamber having an opening at the tip is provided inside the female connecting member, and a locking portion whose inner diameter gradually increases from the tip toward the back is formed on the inner surface in the storage chamber. While providing a locking member,
At the front part of the male connecting member, a male locking member is provided with a locking part formed on the outer surface, the diameter of which decreases from the front part toward the back part.
By inserting the male locking member between the female locking members, the locking hole constituted by the female locking member is expanded in diameter, and then the locking hole is reduced in diameter by the biasing means. The engaging portion of the female locking member and the locking portion of the male locking member are engaged,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. When using the connector provided with a retaining member that urges the male locking member in the insertion direction to prevent the male locking member from coming off,
The female-type connecting member is fixed to one concrete member to be connected, and the male-type connecting member is fixed to the other concrete member to be connected.

請求項７記載の発明は、請求項５又は６記載のコンクリート部材の連結装置において、前記抜止部材は、プッシュナット又はスピードナットであることを特徴とするものである。   The invention according to claim 7 is the connecting device for a concrete member according to claim 5 or 6, wherein the retaining member is a push nut or a speed nut.

請求項８記載の発明は、請求項５又は６又は７記載のコンクリート部材の連結装置において、前記コンクリート部材が、シールドセグメントであることを特徴とするものである。   The invention according to claim 8 is the concrete member connecting device according to claim 5, 6 or 7, wherein the concrete member is a shield segment.

本発明は、抜止部材により雄型係止部材の抜けを抑制することで、雌型連結部材と雄型連結部材との連結状態において、抜止部材の耐引張荷重の範囲内においては、抜止部材により雄型係止部材の抜け方向への移動が抑制され、雄型連結部材と雌型連結部材間の目開き量を、従来の雌型連結部材１０７と雄型連結部材１１０間の目開き量よりも少なく抑えることができる。   According to the present invention, by preventing the male locking member from coming off by the retaining member, in the connected state of the female coupling member and the male coupling member, the retaining member is within the range of the tensile load resistance of the retaining member. The movement of the male locking member in the pulling direction is suppressed, and the amount of opening between the male connecting member and the female connecting member is greater than the amount of opening between the conventional female connecting member 107 and the male connecting member 110. Can also be reduced.

例えば、本発明の連結具を、シールドセグメント間の連結に適用し、抜止部材の耐引張荷重を、トンネルの施工時における、台形のシールドセグメント２０６と後段の連結リング２０２との間に加わる引張荷重よりも大きく設定した場合に、抜止部材により雄型連結部材、すなわち台形のシールドセグメント２０６の前（進行）方向Ａへの移動を抑制し、台形のシールドセグメント２０６と後段の連結リング２０２との段差を、前記従来の連結具を用いて連結した場合よりも低く抑えることができ、次の段の連結リングを構成するシールドセグメントを容易に組み付けすることができる。   For example, the connection tool of the present invention is applied to the connection between the shield segments, and the tensile load applied to the retaining member is applied between the trapezoidal shield segment 206 and the subsequent connection ring 202 during tunnel construction. If it is set larger than that, the retaining member suppresses the movement of the male connecting member, that is, the trapezoidal shield segment 206 in the front (traveling) direction A, and the step difference between the trapezoidal shield segment 206 and the subsequent connecting ring 202 Can be kept lower than the case of connecting using the conventional connector, and the shield segment constituting the connecting ring of the next stage can be easily assembled.

本発明を実施するための最良の形態を図に示す実施例に基づいて説明する。   BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described based on an embodiment shown in the drawings.

図１乃至図６、図１３（ｂ）は、実施例１を示す。
本実施例１の連結具は、図１に示す雌型連結部材１と、図２に示す雄型連結部材２で構成されている。 1 to 6 and FIG. 13B show the first embodiment.
The connector of the first embodiment is composed of a female connecting member 1 shown in FIG. 1 and a male connecting member 2 shown in FIG.

雌型連結部材１は、ケーシング３を有し、該ケーシング３は、筒状、例えば円筒状に形成され、その内部に収納室４が形成されている。該収納室４の中間部は、その内周面を先端部４ａ側から後方（奥部）にかけて内径が徐々に拡大するテーパ面にしてなる円錐状のテーパ穴５に形成され、収納室４の後部は付勢手段収納部６に形成されている。前記ケーシング３の後部の内周面には雌ねじ３ａが刻設されている。また、収納室４の先端側は、挿入口（開口部）４ｂが開口形成されている。   The female connecting member 1 has a casing 3, and the casing 3 is formed in a cylindrical shape, for example, a cylindrical shape, and a storage chamber 4 is formed therein. The intermediate portion of the storage chamber 4 is formed in a conical tapered hole 5 having a tapered surface whose inner peripheral surface gradually increases from the front end portion 4a side to the rear (back portion). The rear part is formed in the urging means storage part 6. A female screw 3 a is engraved on the inner peripheral surface of the rear portion of the casing 3. Further, an insertion port (opening) 4 b is formed at the front end side of the storage chamber 4.

また、収納室４のテーパ穴５の先端より開口（先）部側には、テーパ穴５の内径端より大径の抜止部材収納部３ｂが形成され、該抜止部材収納部３ｂの内周面には雌ねじ３ｃが刻設されている。   Further, a retaining member accommodating portion 3b having a diameter larger than the inner diameter end of the tapered hole 5 is formed on the opening (tip) side of the tapered hole 5 of the accommodating chamber 4, and the inner peripheral surface of the retaining member accommodating portion 3b. Is engraved with a female screw 3c.

抜止部材収納部３ｂには、その軸方向と直交する方向に配置した抜止部材７が、軸方向において複数並列状態に設けられ、該抜止部材７、７間には、スペーサ８が設けられ、最先に位置する抜止部材７より先には、押え部材９が前記雌ねじ３ｃに螺合して設けられている。なお、抜止部材７の数を、本実施例１においては３個としたが、１個又は複数個、任意に設ける。スペーサ８は、設けなくてもよい。   In the retaining member storage portion 3b, a plurality of retaining members 7 arranged in a direction orthogonal to the axial direction are provided in a parallel state in the axial direction, and a spacer 8 is provided between the retaining members 7 and 7, and A presser member 9 is screwed into the female screw 3c before the retaining member 7 positioned first. Although the number of retaining members 7 is three in the first embodiment, one or a plurality of retaining members 7 are arbitrarily provided. The spacer 8 may not be provided.

前記抜止部材７は、図４に示すように、円形（環状）の板からなる基部７ａを有し、該基部７ａの中心部には穴部７ｂが設けられている。該穴部７ｂ内には、基部７ａから内側へ突出する爪部７ｃが、周方向において複数個分割して設けられ、基部７ａと爪部７ｃは一体に形成されている。また、該爪部７ｃは、図３、図４に示すように、基部７ａ軸方向Ｚ−Ｚにおける一方向（奥部側方向）に傾斜して、各爪部７ｃの内周面で形成される仮想円が一方向（奥部側）に至るほど縮径し、各爪部７ｃの先端（内径端）で形成される仮想円７ｄの径Ｌ１は、後述する雄型係止部材２３の円筒部２３ｃの外径よりも小さく設定されている。更に、該爪部７ｃは軸方向Ｚ−Ｚに弾性を有する。   As shown in FIG. 4, the retaining member 7 has a base 7a made of a circular (annular) plate, and a hole 7b is provided at the center of the base 7a. In the hole portion 7b, a plurality of claw portions 7c protruding inward from the base portion 7a are provided in the circumferential direction, and the base portion 7a and the claw portion 7c are integrally formed. Further, as shown in FIGS. 3 and 4, the claw portion 7 c is formed on the inner peripheral surface of each claw portion 7 c so as to incline in one direction (back side direction) in the base portion 7 a axial direction ZZ. The diameter of the virtual circle 7d formed at the tip (inner diameter end) of each claw portion 7c is a cylinder of the male locking member 23 described later. It is set smaller than the outer diameter of the portion 23c. Further, the claw portion 7c has elasticity in the axial direction ZZ.

そして、前記抜止部材７は、図１、図３に示すように、その爪部７ｃの先が抜止部材収納部３ｂの奥部に向かって傾斜するように設置されている。   As shown in FIGS. 1 and 3, the retaining member 7 is installed such that the tip of the claw portion 7c is inclined toward the inner portion of the retaining member housing portion 3b.

本実施例においては抜止部材７として、図４に示すような軸用のプッシュナットを使用したが、抜止部材７は、前記のように基部７ａから奥部側方向に傾斜する複数の爪部７ｃを有するものであればよく、例えば、フラットプッシュナット、丸形スピードナットを用いることができる。   In this embodiment, a push nut for a shaft as shown in FIG. 4 is used as the retaining member 7, but the retaining member 7 has a plurality of claw portions 7c inclined from the base portion 7a toward the back side as described above. For example, a flat push nut or a round speed nut can be used.

前記テーパ穴５内には、軸方向に沿った摺動案内突条１１が、図５（ａ）に示すように周方向に分割して複数形成されている。   A plurality of sliding guide ridges 11 along the axial direction are formed in the tapered hole 5 by being divided in the circumferential direction as shown in FIG.

また、前記テーパ穴５内には、図５（ｂ）に示すように１個、若しくは、図５（ａ）に示すように周方向に複数に分割してなる楔状の雌型係止部材１２が、前記摺動案内突条１１相互間においてケーシング３の軸方向に摺動可能に配設されている。雌型係止部材１２の数を、本実施例においては、図５（ａ）に示すように３個としたが、任意に設定する。   Further, in the taper hole 5, one wedge-shaped female locking member 12 as shown in FIG. 5B or a plurality of wedge-shaped female locking members 12 divided in the circumferential direction as shown in FIG. 5A. However, the sliding guide protrusions 11 are arranged so as to be slidable in the axial direction of the casing 3. In this embodiment, the number of the female locking members 12 is three as shown in FIG. 5A, but is arbitrarily set.

更に、該楔状の雌型係止部材１２の外面は、前記テーパ穴５のテーパ面に沿った、すなわち、先端部４ａ側から後方にかけて外径が徐々に拡大するテーパ面１２ａに形成されている。更に、各雌型係止部材１２の内周面には、螺旋状の係止山及び係止溝からなる係止部（雌ねじ）１２ｂが、ケーシング３の軸芯Ｘ−Ｘを中心とする円弧でかつ軸芯Ｘ−Ｘに沿った方向に刻設されている。この螺旋状の係止部１２ｂとして、例えば図６に示すような、螺旋状で、かつ、不等辺三角形状の係止山１２ｄ及び係止溝１２ｅからなる係止部（雌ねじ）１２ｂを用いることができる。   Further, the outer surface of the wedge-shaped female locking member 12 is formed in a tapered surface 12a along the tapered surface of the tapered hole 5, that is, the outer diameter gradually increases from the front end 4a side toward the rear. . Further, on the inner peripheral surface of each female locking member 12, a locking portion (female screw) 12 b composed of a helical locking mountain and a locking groove is an arc centered on the axis XX of the casing 3. And inscribed in a direction along the axis XX. As the helical locking portion 12b, for example, as shown in FIG. 6, a locking portion (female screw) 12b made of a helical and non-equal triangular locking mountain 12d and a locking groove 12e is used. Can do.

なお、以下において、雌型係止部材１２を楔ナット１２ともいう。
上記により、１個若しくは複数個の楔ナット１２により係止穴（雌ねじ穴）１２ｃが形成され、各楔ナット１２がテーパ面に沿って後退することにより、その雌ねじ穴１２ｃが拡径され、先方へ移動することにより、その雌ねじ穴１２ｃが縮径するようになっている。 Hereinafter, the female locking member 12 is also referred to as a wedge nut 12.
As described above, one or a plurality of wedge nuts 12 form locking holes (female screw holes) 12c, and each wedge nut 12 retreats along the tapered surface, so that the female screw holes 12c are expanded in diameter. The female screw hole 12c is reduced in diameter by moving to.

また、前記楔ナット１２の後端には、各楔ナット１２に共通して係合する付勢手段受け（バネ受け）１３が配置されている。   Further, an urging means receiver (spring receiver) 13 that engages with each wedge nut 12 in common is disposed at the rear end of the wedge nut 12.

前記ケーシング３の後部の雌ねじ３ａには、中心部にねじ穴１４ａを形成した蓋板１４が螺着されている。前記付勢手段収納部６内の前記付勢手段受け１３と蓋板１４の間には付勢手段１６が収納されている。該付勢手段１６は、コイルバネ、ゴム、樹脂、ウレタンなどの弾性部材で形成される。本実施例１ではコイルバネを使用して圧縮状態で収納されている。該付勢手段１６の付勢力により各楔ナット１２は、常時先端部４ａ方向へ付勢されている。   A cover plate 14 having a screw hole 14a formed at the center is screwed to the female screw 3a at the rear of the casing 3. A biasing means 16 is accommodated between the biasing means receiver 13 and the cover plate 14 in the biasing means storage portion 6. The biasing means 16 is formed of an elastic member such as a coil spring, rubber, resin, or urethane. In the first embodiment, it is housed in a compressed state using a coil spring. Each wedge nut 12 is always urged in the direction of the distal end portion 4a by the urging force of the urging means 16.

前記蓋体１４には、蓋体１４から後方向に突出するアンカーバー１８が螺着して固設されている。アンカーバー１８の後側には、抜け止め部１８ａが外周側へ突出して設けられている。   An anchor bar 18 protruding rearward from the lid body 14 is screwed to the lid body 14 and fixed thereto. On the rear side of the anchor bar 18, a retaining portion 18a is provided so as to protrude to the outer peripheral side.

前記の雌型連結部材１は、一方の連結部品、例えば、図３に示すようなシールドセグメント１９に、ケーシング３の先端部側４ａ面がシールドセグメント１９の接合面１９ａと面一になるように埋設して固設されている。   The female connecting member 1 has one connecting part, for example, a shield segment 19 as shown in FIG. 3, so that the surface 4 a surface of the casing 3 is flush with the joint surface 19 a of the shield segment 19. It is buried and fixed.

なお、雌型連結部材１は、雄型連結部材２が挿入できればよく、前記のように、ケーシング３の先端部４ａとシールドセグメント１９の接合面１９ａとが面一である必要はない。   The female connecting member 1 only needs to be able to insert the male connecting member 2, and as described above, the tip end portion 4 a of the casing 3 and the joint surface 19 a of the shield segment 19 do not have to be flush with each other.

次に、雄型連結部材２について説明する。
雄型連結部材２は、変形できる部材、例えば、発泡スチロール、ゴム等の弾性材、樹脂、ダンボールで形成された円筒状の調整部材２１内に、内周に雌ねじ２２ａを刻設した連結体２２を設け、該連結体２２の先部に雄型係止部材２３が、その基部側に形成した雄ねじ体２３ａを螺着して構成されている。 Next, the male connection member 2 will be described.
The male connecting member 2 includes a connecting member 22 in which a female screw 22a is engraved on the inner periphery in a cylindrical adjusting member 21 formed of a deformable member, for example, an elastic material such as foamed polystyrene or rubber, resin, or cardboard. The male locking member 23 is provided at the front portion of the connecting body 22 and is screwed with a male screw body 23a formed on the base side thereof.

前記雄型係止部材２３は、前記連結体２２の先端より突出しており、その先部（前側）には、先部が縮径するドーム状の案内部２４が形成されている。すなわち、前記雌型係止部材１２を誘導する曲面が形成され、その後部、かつ、雄ねじ体２３ａより先部には、螺旋状の係止山及び係止溝からなる係止部（雄ねじ）２３ｂが刻設されている。この螺旋状の係止部２３ｂとして、例えば図６に示すような、螺旋状で、かつ、不等辺三角形状の係止山２３ｄ及び係止溝２３ｅからなる係止部（雄ねじ）２３ｂを用いることができる。前記係止部（雄ねじ）２３ｂの直径は、前記各楔ナット１２が最前進した場合に、これらで形成されるねじ穴１２ｃの直径よりも若干大径に設定されている。雄ねじ２３ｂと雄ねじ体２３ａとの間には、円筒状の円筒部２３ｃが形成され、該円筒部２３ｃの外径は、前記抜止部材７の爪部７ｃの通常形態時（無加圧状態時）における先端で形成される仮想円７ｄの径Ｌ１よりも大径に設定されている。   The male locking member 23 protrudes from the tip of the coupling body 22, and a dome-shaped guide portion 24 whose tip diameter is reduced is formed at the tip (front side) thereof. That is, a curved surface for guiding the female locking member 12 is formed, and a locking portion (male screw) 23b including a helical locking mountain and a locking groove is formed at the rear portion and at the front portion of the male screw body 23a. Is engraved. As the helical locking portion 23b, for example, as shown in FIG. 6, a locking portion (male screw) 23b formed of a helical and non-equal triangular locking mountain 23d and a locking groove 23e is used. Can do. The diameter of the locking portion (male screw) 23b is set to be slightly larger than the diameter of the screw hole 12c formed by each wedge nut 12 when the wedge nut 12 is moved forward most. A cylindrical cylindrical portion 23c is formed between the male screw 23b and the male screw body 23a. The outer diameter of the cylindrical portion 23c is determined when the claw portion 7c of the retaining member 7 is in a normal configuration (when no pressure is applied). The diameter is set larger than the diameter L1 of the virtual circle 7d formed at the tip.

前記連結体２２の後部には、図２に示すように、アンカーバー３０が螺着して固設されている。該アンカーバー３０の後端には抜け止め部３０ａが設けられている。また、アンカーバー３０の外周には、ゴム等の弾性材もしくは金属からなる空間保持用のパイプ３１が設けられている。空間保持用のパイプ３１の前側端部は、調整部材２１の後側の係止部２１ａに係止し、後側端部は、アンカーバー３０の抜け止め部３０ａに設けられたゴム等の弾性材からなる座部材３２に係止している。アンカーバー３０と空間保持用のパイプ３１との間には空隙３３が設けられている。   As shown in FIG. 2, an anchor bar 30 is screwed and fixed to the rear portion of the connecting body 22. A retaining portion 30 a is provided at the rear end of the anchor bar 30. A space holding pipe 31 made of an elastic material such as rubber or metal is provided on the outer periphery of the anchor bar 30. The front end of the space holding pipe 31 is engaged with the rear engaging portion 21 a of the adjusting member 21, and the rear end is elastic such as rubber provided on the retaining portion 30 a of the anchor bar 30. The seat member 32 made of a material is locked. A gap 33 is provided between the anchor bar 30 and the space holding pipe 31.

なお、空隙３３を設けることなく、アンカーバー３０の外面に沿ってゴム等の弾性材により形成して調整部材２１としても良い。   The adjusting member 21 may be formed by forming an elastic material such as rubber along the outer surface of the anchor bar 30 without providing the gap 33.

前記調整部材２１、アンカーバー３０、空間保持用パイプ３１は、他方の連結部材、例えば、シールドセグメント３５に、連結体２２の前端面２２ｂがシールドセグメント３５の接合面３５ａと面一になるように埋設して固設されるもので、その前記調整部材２１、空隙保持用パイプ３１、抜け止め部３０ａの外部にはコンクリート３５ｂが打設されている。   The adjustment member 21, the anchor bar 30, and the space holding pipe 31 are arranged such that the front end surface 22 b of the coupling body 22 is flush with the joining surface 35 a of the shield segment 35 on the other coupling member, for example, the shield segment 35. A concrete 35b is placed outside the adjusting member 21, the gap retaining pipe 31, and the retaining portion 30a.

なお、雄型連結部材２は、その円筒部２３ｃがシールドセグメント３５の接合面３５ａより突出すればよく、前記のように連結体２２の前端面２２ｂがシールドセグメント３５の接合面３５ａと面一である必要はない。   The male connecting member 2 only needs to have the cylindrical portion 23c protruding from the joining surface 35a of the shield segment 35, and the front end face 22b of the connecting body 22 is flush with the joining surface 35a of the shield segment 35 as described above. There is no need.

また、前記一方のシールドセグメント１９における接合面１９ａには、図示しないシール材が突出して設けられ、他方のシールドセグメント３５における接合面３５ａには、図示しないシール材が突出して設けられている。   Further, a sealing material (not shown) projects from the joint surface 19a of the one shield segment 19, and a sealing material (not shown) projects from the joint surface 35a of the other shield segment 35.

他方の連結部材３５に設けられた雄型連結部材２は、変形できる部材からなる調整部材２１と空隙３３と空隙保持用パイプ３１と座部材３２の相互作用により、アンカーバー３０の抜け止め部３０ａを中心として雄型係止部材２はその軸芯Ｙ−Ｙと直交する方向に変位できるようになっている。   The male connecting member 2 provided on the other connecting member 35 has a retaining portion 30a of the anchor bar 30 due to the interaction of the adjusting member 21, which is a deformable member, the gap 33, the gap holding pipe 31, and the seat member 32. The male locking member 2 can be displaced in a direction perpendicular to the axis YY.

前記楔ナット１２の係止部（雌ねじ）１２ｂと、雄型係止部材２３の係止部（雄ねじ）２３ｂとして、二等辺三角形状の係止山が連続してなる係止部や、例えば、特開２００６−１４４９５６号公報に記載のような不等辺三角形状の係止山が連続してなる係止部を用いることができるが、不等辺三角形状の係止山が連続してなる係止部を用いることが好ましく、その一例を図６に示す。   As the locking part (female screw) 12b of the wedge nut 12 and the locking part (male screw) 23b of the male locking member 23, for example, a locking part having a continuous isosceles triangular locking mountain, Although the engaging part in which the non-equal triangle-shaped engaging mountain as described in JP-A-2006-14495 can be used, the engaging part in which the non-equal triangular engaging mountain is continuous is used. Part is preferably used, and an example thereof is shown in FIG.

次に、前記楔ナット１２の雌ねじ１２ｂと、前記雄型係止部材２３の雄ねじ２３ｂの係止山間の間隔（ねじピッチ）Ｐについて説明する。   Next, the interval (screw pitch) P between the locking threads of the female screw 12b of the wedge nut 12 and the male screw 23b of the male locking member 23 will be described.

前記楔ナット１２の雌ねじ１２ｂと、前記雄型係止部材２３の雄ねじ２３ｂのねじピッチＰは所望に形成するもので、ＪＩＳに規定する細目ねじの呼び径に対するねじピッチとしてもよく、また、ＪＩＳに規定する細目ねじの呼び径に対するねじピッチよりも小さくしてもよい。   The thread pitch P of the female thread 12b of the wedge nut 12 and the male thread 23b of the male locking member 23 is formed as desired, and may be a thread pitch with respect to the nominal diameter of the fine thread defined in JIS. It may be smaller than the thread pitch with respect to the nominal diameter of the fine thread defined in.

例として、呼び径がＭ２４（ｍｍ）の場合には、前記ＪＩＳ Ｂ ０２０７のメートル細目ねじではねじピッチを２ｍｍ又は１．５ｍｍ又は１ｍｍに形成するが、本発明では、ねじピッチＰを０．３ｍｍ〜０．８ｍｍ、望ましくは０．５ｍｍに設定する。   As an example, when the nominal diameter is M24 (mm), the thread pitch is 2 mm, 1.5 mm or 1 mm in the JIS B 0207 metric fine thread, but in the present invention, the thread pitch P is 0.3 mm. It is set to ˜0.8 mm, preferably 0.5 mm.

また、呼び径がＭ３０（ｍｍ）の場合もねじピッチＰを０．３ｍｍ〜０．８ｍｍ、望ましくは０．５ｍｍに設定する。   Further, when the nominal diameter is M30 (mm), the screw pitch P is set to 0.3 mm to 0.8 mm, preferably 0.5 mm.

次に本発明をシールドセグメントに適用した例に基づいて連結操作を説明する。
先ず、雌型連結部材１の軸芯Ｘ−Ｘと雄型連結部材２の雄型係止部材２３の軸芯Ｙ−Ｙとが略同軸上に位置した状態で、一方のシールドセグメント１９と他方のシールドセグメント３５を相対的に近接させ、雄型係止部材２３を雌型係止部材１の挿入口４ｂより挿入する。 Next, a connection operation will be described based on an example in which the present invention is applied to a shield segment.
First, in a state where the axis XX of the female connecting member 1 and the axis YY of the male locking member 23 of the male connecting member 2 are positioned substantially coaxially, one shield segment 19 and the other The shield segments 35 are relatively close to each other, and the male locking member 23 is inserted from the insertion port 4 b of the female locking member 1.

雄型係止部材２３が、雌型連結部材１における挿入口４ｂから進入すると、抜止部材７の爪部７ｃを奥部へ押し広げながら進入し、その後、雄型係止部材２３が各楔ナット１２を付勢手段１６の付勢力に抗して後退させて各楔ナット１２で形成されるねじ穴１２ｃを拡径し、各楔ナット１２の係止山を乗り越えつつ挿入する。   When the male locking member 23 enters from the insertion port 4b in the female connecting member 1, the male locking member 23 enters while pushing the claw portion 7c of the retaining member 7 to the back. 12 is retreated against the urging force of the urging means 16 to increase the diameter of the screw hole 12c formed by each wedge nut 12, and is inserted while climbing over the locking mountain of each wedge nut 12.

雌型連結部材１におけるケーシング３の先端面、すなわち、一方のシールドセグメント１９の接合面１９ａと、雄型連結部材２における連結体２２の先端面、すなわち他方のシールドセグメント３５の接合面３５ａが接して雄型連結部材２の挿入が停止されると、各楔ナット１２は、付勢手段１６の付勢力によって先端面４ａ側へ押戻されるとともにテーパ面１２ａによって各楔ナット１２で形成される雌ねじ穴１２ｃの径が縮径し、各楔ナット１２の雌ねじ１２ｂが雄型係止部材２３の雄ねじ２３ｂに噛合する。この時、雄型係止部材２３の円筒部２３ｃの外周面に抜止部材７の爪部７ｃの先端が、その復元力によって圧接する。これによって両シールドセグメント１９、３５は相互に連結される。   The front end surface of the casing 3 in the female connection member 1, that is, the joint surface 19 a of one shield segment 19, and the front end surface of the connection body 22 in the male connection member 2, that is, the joint surface 35 a of the other shield segment 35 are in contact. When the insertion of the male connecting member 2 is stopped, each wedge nut 12 is pushed back toward the distal end surface 4a by the urging force of the urging means 16, and the female screw formed by each wedge nut 12 by the tapered surface 12a. The diameter of the hole 12 c is reduced, and the female screw 12 b of each wedge nut 12 is engaged with the male screw 23 b of the male locking member 23. At this time, the distal end of the claw portion 7c of the retaining member 7 is pressed against the outer peripheral surface of the cylindrical portion 23c of the male locking member 23 by its restoring force. As a result, the shield segments 19 and 35 are connected to each other.

本実施例１の連結具を構成する雌型連結部材１及び雄型連結部材２は、前記のような構造を有しているため、次のような作用、効果を奏する。   Since the female connecting member 1 and the male connecting member 2 constituting the connecting device of the first embodiment have the above-described structure, the following operations and effects are achieved.

従来の雄型連結部材１１０及び雌型連結部材１０７を用いて連結するシールドセグメントにおいては、図１３（ａ）の特性Ａに示すように、雄型連結部材１１０及び雌型連結部材１０７の連結時における引張り方向の荷重（引張荷重）が大きくなるほど、シールドセグメント１１０、１１１間の目開き量が大きくなるが、本実施例１の連結具を用いて連結した場合においては、図１３（ｂ）の特性Ｂにおける特性Ｃ示すように、引張荷重が抜止部材７の耐引張荷重より少ない間は、抜止部材７により雄型係止部材２３の抜け方向の移動が抑制されて、シールドセグメント１９、３５の接合面１９ａ、３５ａ間の目開き量を、従来の雄型連結部材１０８及び雌型連結部材１０７間の目開き量よりも低く抑えることができる。   In the shield segment connected using the conventional male connecting member 110 and female connecting member 107, when the male connecting member 110 and the female connecting member 107 are connected, as shown by the characteristic A in FIG. As the load in the tension direction (tensile load) increases, the amount of openings between the shield segments 110 and 111 increases. However, in the case of using the connection tool of the first embodiment, the connection shown in FIG. As shown in the characteristic C in the characteristic B, while the tensile load is smaller than the tensile load resistance of the retaining member 7, the retaining member 7 suppresses the movement of the male locking member 23 in the removal direction, and the shield segments 19 and 35. The amount of opening between the joint surfaces 19a and 35a can be kept lower than the amount of opening between the conventional male connecting member 108 and female connecting member 107.

例えば、本発明の連結具（雌型連結部材１と雄型連結部材２）を、シールドセグメント間の連結に適用し、抜止部材７の耐引張荷重を、トンネルの施工時における、台形のシールドセグメント２０５と後段の連結リング２０２との間に加わる引張荷重よりも大きく設定した場合に、抜止部材７により雄型連結部材２、すなわち台形のシールドセグメント２０５の前（進行）方向Ａへの移動を抑制し、台形のシールドセグメント２０５と後段の連結リング２０２との段差を、前記従来の連結具（雄型連結部材１０８及び雌型連結部材１０７）を用いて連結した場合よりも低く抑えることができ、従来技術のような大きな段差Ｄが殆ど生じず、次の段の連結リングを構成するシールドセグメント２０７との間の段差も小さくなり、シールドセグメント２０７を容易に連結することができる。   For example, the coupling tool (female coupling member 1 and male coupling member 2) of the present invention is applied to the coupling between shield segments, and the tensile load of the retaining member 7 is applied to the trapezoidal shield segment during tunnel construction. When the tensile load applied between 205 and the rear connecting ring 202 is set larger, the retaining member 7 prevents the male connecting member 2, that is, the trapezoidal shield segment 205 from moving in the front (advance) direction A. In addition, the step between the trapezoidal shield segment 205 and the subsequent connection ring 202 can be suppressed to be lower than the case where the conventional connection tool (the male connection member 108 and the female connection member 107) is connected, There is almost no large step D as in the prior art, the step between the shield segment 207 constituting the connecting ring of the next step is also reduced, and the shield segment is reduced. The door 207 can be easily connected.

なお、前記のように摺動案内突条１１を設けた場合には、雌型連結部材１又は雄型連結部材２のいずれかを回転することにより、これらを分離できるが、このような分離が不要或いは不可にする場合には摺動案内突条１１を設けない。   In addition, when the sliding guide protrusion 11 is provided as described above, these can be separated by rotating either the female coupling member 1 or the male coupling member 2, but such separation is not possible. When unnecessary or impossible, the sliding guide protrusion 11 is not provided.

前記実施例１においては、雄型係止部材２３の係止部２３ｂ及び雌型係止部材１２の係止部１２ｂを螺旋状の係止山及び係止溝で形成したが、雄型係止部材の係止部及び雌型係止部材の係止部を、軸心Ｙ−Ｙに対して直交、かつ、平行な環状に形成された係止山及び係止溝を軸心方向に連続させて形成したものとしてもよい。   In the first embodiment, the locking portion 23b of the male locking member 23 and the locking portion 12b of the female locking member 12 are formed by spiral locking peaks and locking grooves. The locking portion of the member and the locking portion of the female locking member are continuously connected in the axial direction with locking peaks and locking grooves formed in an annular shape that is orthogonal to and parallel to the axis Y-Y. It is good also as what was formed.

この環状の係止部として、例えば、図７に示すような、軸心Ｘ−Ｘに対して直交し、かつ、平行な環状で、かつ、不等辺三角形状の係止山３７ｃ、３８ｃを軸心方向に連続して形成した係止部３７ｂ、３８ｂとする雄型係止部材３７と雌型係止部材２８を用いることができる。   As this annular locking portion, for example, as shown in FIG. 7, locking mountains 37 c and 38 c that are orthogonal to and parallel to the axis XX and are in the form of an unequal triangle are used as shafts. A male locking member 37 and a female locking member 28 which are locking portions 37b and 38b formed continuously in the center direction can be used.

なお、雄型係止部材３７の係止部３７ｂ及び雌型係止部材３８の係止部３８ｂの係止山及び係止溝は、図７に示すような、不等辺三角形状に限定されるものではなく、二等辺三角形状の係止山が連続してなる係止部や、例えば、特開２００６−１４４９５６号公報に記載のような不等辺三角形状の係止山が連続してなる係止部を用いることができるが、不等辺三角形状の係止山が連続してなる係止部を用いることが好ましい。   In addition, the engaging crest and the engaging groove of the engaging portion 37b of the male engaging member 37 and the engaging portion 38b of the female engaging member 38 are limited to an unequal triangular shape as shown in FIG. It is not a thing, but the engaging part which an isosceles triangle-shaped locking mountain continues, for example, the engagement which an equilateral triangle-shaped locking mountain as described in Unexamined-Japanese-Patent No. 2006-14495 continues. Although a locking part can be used, it is preferable to use a locking part in which locking mountains in the form of unequal triangles are continuous.

本実施例２においても、係止山間の間隔（ピッチ）Ｐの寸法は、前記実施例１に示したねじピッチの寸法に相当する値に設定する。   Also in the second embodiment, the dimension of the pitch (pitch) P between the locking ridges is set to a value corresponding to the thread pitch dimension shown in the first embodiment.

その他の部材及び構造については、前記実施例１と同様の部材及び構造を有するため、前記と同一部には前記と同一符号を付してその説明を省略する。   Since other members and structures have the same members and structures as those of the first embodiment, the same parts as those described above are denoted by the same reference numerals as those described above, and the description thereof is omitted.

また、本実施例２においても、前記実施例１と同様の作用、効果を奏する。   Also in the second embodiment, the same operations and effects as in the first embodiment are achieved.

図８、図９は、実施例３を示す。
前記実施例１、２においては、雌型係止部材１２の係止部１２ｂとして、螺旋状又は環状の係止山及び係止溝からなる係止部１２ｂを用い、雄型係止部材２３の係止部２３ｂとして、螺旋状又は環状の係止山及び係止溝からなる係止部２３ｂを用いたが、本実施例３のようなテーパ状の係止部４２ｂ、４４ａを用いてもよい。 8 and 9 show a third embodiment.
In the first and second embodiments, as the locking portion 12b of the female locking member 12, the locking portion 12b including a helical or annular locking mountain and a locking groove is used. As the locking portion 23b, the locking portion 23b including a spiral or annular locking mountain and a locking groove is used, but tapered locking portions 42b and 44a as in the third embodiment may be used. .

雌型連結部材４０の雌型係止部材４２の外面は、図８に示すように、前記実施例１の雌型係止部材１２と同様に、テーパ穴５のテーパ面に沿った、すなわち、先端部４ａ側から後方にかけて外径が徐々に拡大する外側テーパ面４２ａで形成されている。   As shown in FIG. 8, the outer surface of the female locking member 42 of the female connecting member 40 is along the tapered surface of the tapered hole 5 as in the female locking member 12 of the first embodiment. The outer tapered surface 42a is formed such that the outer diameter gradually increases from the front end 4a side to the rear side.

また、雌型連結部材４２の内周面には、先端部４ａ側から後方にかけて内径が徐々に拡大する内側テーパ面からなる係止部４２ｂが、ケーシング２の軸心Ｘ−Ｘを中心とする円弧で形成されている。また、係止部４２ｂは、軸心Ｘ−Ｘ方向において傾斜した直線で形成され、かつ、軸心Ｘ−Ｘに対する傾斜角は、外側テーパ面４２ａのものよりも小さく設定されている。   Further, on the inner peripheral surface of the female connecting member 42, an engaging portion 42 b formed of an inner tapered surface whose inner diameter gradually increases from the front end portion 4 a side to the rear is centered on the axis XX of the casing 2. It is formed with an arc. The locking portion 42b is formed by a straight line inclined in the direction of the axis XX, and the inclination angle with respect to the axis XX is set smaller than that of the outer tapered surface 42a.

雄型連結部材４１の雄型係止部材４４の係止部４４ａは、図９に示すように、前記実施例１の雄型係止部材２３の係止部２３ｂと同様に、案内部２４と円筒部２３ｃとの間に位置し、かつ、後方が縮径する円筒状面からなる。   As shown in FIG. 9, the locking portion 44a of the male locking member 44 of the male connecting member 41 is similar to the locking portion 23b of the male locking member 23 of the first embodiment, It consists of the cylindrical surface which is located between the cylindrical parts 23c and whose back diameter is reduced.

係止部４４ａの軸心Ｙ−Ｙに対する傾斜角は、前記雌型連結部材４２の係止部４２ｂの軸心Ｘ−Ｘに対する傾斜角と略同一に設定されている。   The inclination angle of the locking portion 44a with respect to the axis YY is set substantially the same as the inclination angle of the locking portion 42b of the female connecting member 42 with respect to the axis XX.

その他の部材及び構造については、前記実施例１と同様の部材及び構造を有するため、前記と同一部には前記と同一符号を付してその説明を省略する。   Since other members and structures have the same members and structures as those of the first embodiment, the same parts as those described above are denoted by the same reference numerals as those described above, and the description thereof is omitted.

また、本実施例３においても、前記実施例１と同様の作用、効果を奏する。   Also in the third embodiment, the same operations and effects as the first embodiment are achieved.

本発明の実施例１に用いる雌型連結部材の部分側断面図。The partial side sectional view of the female type connection member used for Example 1 of the present invention. 本発明の実施例１に用いる雄型連結部材の部分側断面図。The fragmentary sectional side view of the male type | mold connection member used for Example 1 of this invention. 本発明の実施例１における雌型連結部材と雄型連結部材の連結状態を示す部分側断面図。The fragmentary sectional side view which shows the connection state of the female type | mold connection member and male type | mold connection member in Example 1 of this invention. 本発明の実施例１に用いる抜止部材を示すもので、（ａ）は後面図、（ｂ）は側面図。FIG. 2 shows a retaining member used in Example 1 of the present invention, where (a) is a rear view and (b) is a side view. （ａ）は図１のＡ−Ａ線断面図、（ｂ）は雌型係止部材を１個使用した例でＡ−Ａ線断面図に相当する図。(A) is the sectional view on the AA line of FIG. 1, (b) is a figure equivalent to an AA sectional view in the example which uses one female type locking member. 本発明の実施例１における雌型係止部材及び雄型係止部材の係止部の拡大側面図。The enlarged side view of the latching | locking part of the female locking member and the male locking member in Example 1 of this invention. 本発明の実施例２における雌型係止部材及び雄型係止部材の係止部の拡大側面図。The expanded side view of the latching | locking part of the female locking member and the male locking member in Example 2 of this invention. 本発明の実施例３に用いる雌型連結部材の部分側断面図。The fragmentary sectional side view of the female type | mold connection member used for Example 3 of this invention. 本発明の実施例３における雌型連結部材と雄型連結部材の連結状態を示す部分側断面図。The fragmentary sectional side view which shows the connection state of the female type | mold connection member and male type | mold connection member in Example 3 of this invention. 従来の雌型連結部材及び雄型連結部材の部分側断面図。The fragmentary sectional side view of the conventional female type | mold connection member and a male type | mold connection member. 従来の連結具をシールドセグメントの連結に適用した状態を示す側断面図。The sectional side view which shows the state which applied the conventional connector for the connection of the shield segment. （ａ）、（ｂ）は従来の連結具を用いてシールドセグメントを連結する場合の説明図。(A), (b) is explanatory drawing in the case of connecting a shield segment using the conventional connector. 連結具の連結状態における引張荷重に対する目開きを示す図で、（ａ）は従来の連結具を用いた場合の図、（ｂ）は本発明の連結具を用いた場合の図。It is a figure which shows the opening with respect to the tensile load in the connection state of a connection tool, (a) is a figure at the time of using the conventional connection tool, (b) is a figure at the time of using the connection tool of this invention.

符号の説明Explanation of symbols

１ 雌型連結部材
２ 雄型連結部材
３ ケーシング
４ 収納室
７ 抜止部材
７ｃ 爪部
１２、３８、４２ 雌型係止部材
１２ｂ、３８ｂ 雌型係止部材の係止部
１６ 付勢手段
２３、３７、４４ 雄型連結部材
２３ｂ、３７ｂ、４４ａ 雄型連結部材の係止部
１９、３５ シールドセグメント
DESCRIPTION OF SYMBOLS 1 Female type | mold connection member 2 Male type | mold connection member 3 Casing 4 Storage chamber 7 Detaching member 7c Claw part 12, 38, 42 Female type | mold locking member 12b, 38b Locking part 16 of a female type | mold locking member 16 Biasing means 23, 37 , 44 Male connection member 23b, 37b, 44a Locking portion of male connection member 19, 35 Shield segment

Claims (8)

先部に雄型係止部材を有する雄型連結部材と雌型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を形成し、該収納室に、前記雄型係止部材を挿入することにより、該雄型係止部材を係止する雌型係止部材を設け、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、該雄型係止部材の抜けを抑制する抜止部材を設けたことを特徴とする連結具。 Consists of a male coupling member and a female coupling member having a male locking member at the tip,
A female-type latch that forms a storage chamber with an open end inside the female-type connecting member, and that locks the male-type locking member by inserting the male-type locking member into the storage chamber. A member,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. when the biases of the male locking member in the insertion direction, coupling, characterized in that a suppressing stop member detachment of the male engagement member. 雌型連結部材と雄型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を設け、該収納室内に、係止山及び係止溝を交互に形成してなる係止部を内面側に刻設した雌型係止部材を設けるとともに、
前記雄型連結部材の先部に、係止山及び係止谷を交互に形成してなる係止部を外面に刻設した雄型係止部材を設け、
前記雌型係止部材間に前記雄型係止部材を挿入することにより、前記雌型係止部材により構成される係止穴が拡径した後に、付勢手段により前記係止穴が縮径し前記雌型係止部材の係止部と、前記雄型係止部材の係止部とが噛合するようにした連結具であって、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、雄型係止部材の抜けを抑制する抜止部材を設けたことを特徴とする連結具。 It consists of a female connection member and a male connection member,
A female mold member in which a storage chamber having an opening at the tip is provided inside the female coupling member, and a locking portion formed by alternately forming a locking mountain and a locking groove on the inner surface side is provided in the storage chamber. While providing a stop member,
A male locking member having a locking portion formed by alternately forming locking peaks and locking valleys on the outer surface is provided at the tip of the male connecting member,
By inserting the male locking member between the female locking members, the locking hole constituted by the female locking member is expanded in diameter, and then the locking hole is reduced in diameter by the biasing means. And a coupling tool in which the locking portion of the female locking member and the locking portion of the male locking member are engaged with each other,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. And a retaining member that urges the male locking member in the insertion direction to prevent the male locking member from coming off. 雌型連結部材と雄型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を設け、該収納室内に、先端側から 奥部側に向って内径が徐々に拡径する係止部を内面側に形成した雌型係止部材を設けるとともに、
前記雄型連結部材の先部に、先部から奥部に向かって縮径する係止部を外面に形成した雄型係止部材を設け、
前記雌型係止部材間に前記雄型連結部材を挿入することにより、前記雌型係止部材により構成される係止穴が拡径した後に、付勢手段により前記係止穴が縮径し前記雌型係止部材の係止部と、前記雄型係止部材の係止部とが係合するようにした連結具であって、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、雄型係止部材の抜けを抑制する抜止部材を設けたことを特徴とする連結具。 It consists of a female connection member and a male connection member,
A female mold in which a storage chamber having an opening at the tip is provided inside the female connecting member, and a locking portion whose inner diameter gradually increases from the tip toward the back is formed on the inner surface of the storage chamber. While providing a locking member,
At the front part of the male connecting member, a male locking member is provided with a locking part formed on the outer surface, the diameter of which decreases from the front part toward the back part.
By inserting the male coupling member between the female locking members, the locking hole constituted by the female locking member is expanded in diameter, and then the locking hole is reduced in diameter by the urging means. A coupling tool in which a locking portion of the female locking member and a locking portion of the male locking member are engaged,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. And a retaining member that urges the male locking member in the insertion direction to prevent the male locking member from coming off. 前記抜止部材は、プッシュナット又はスピードナットであることを特徴とする請求項１乃至３のいずれか１項に記載の連結具。   The coupling tool according to any one of claims 1 to 3, wherein the retaining member is a push nut or a speed nut. 雌型連結部材と雄型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を設け、該収納室内に、係止山及び係止谷を交互に形成してなる係止部を内面側に刻設した雌型係止部材を設けるとともに、
前記雄型連結部材の先部に、係止山及び係止溝を交互に形成してなる係止部を外面に刻設した雄型係止部材を設け、
前記雌型係止部材間に前記雄型係止部材を挿入することにより、前記雌型係止部材により構成される係止穴が拡径した後に、付勢手段により前記係止穴が縮径し前記雌型係止部材の係止部と、前記雄型係止部材の係止部とが噛合するようにし、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、雄型係止部材の抜けを抑制する抜止部材を設けた連結具を使用し、
前記雌型連結部材を、連結すべき一方のコンクリート部材に固設し、前記雄型連結部材を連結すべき他方のコンクリート部材に固設したことを特徴とするコンクリート部材の連結装置。 It consists of a female connection member and a male connection member,
A female engagement member in which a storage chamber having an opening at the tip is provided inside the female connection member, and a locking portion formed by alternately forming a locking peak and a locking valley is formed on the inner surface side in the storage chamber. While providing a stop member,
A male locking member having a locking portion formed by alternately forming a locking mountain and a locking groove on the outer surface is provided at the tip of the male connecting member,
By inserting the male locking member between the female locking members, the locking hole constituted by the female locking member is expanded in diameter, and then the locking hole is reduced in diameter by the biasing means. The engaging portion of the female locking member and the locking portion of the male locking member are engaged with each other,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. When using the connector provided with a retaining member that urges the male locking member in the insertion direction to prevent the male locking member from coming off,
A connecting device for a concrete member, wherein the female connecting member is fixed to one concrete member to be connected, and the male connecting member is fixed to the other concrete member to be connected. 雌型連結部材と雄型連結部材とからなり、
前記雌型連結部材の内部に先端部が開口する収納室を設け、該収納室内に、先端側から奥部側に向って内径が徐々に拡径する係止部を内面側に形成した雌型係止部材を設けるとともに、
前記雄型連結部材の先部に、先部から奥部に向かって縮径する係止部を外面に形成した雄型係止部材を設け、
前記雌型係止部材間に前記雄型係止部材を挿入することにより、前記雌型係止部材により構成される係止穴が拡径した後に、付勢手段により前記係止穴が縮径し前記雌型係止部材の係止部と、前記雄型係止部材の係止部とが係合するようにし、
前記収納室内に、前記雄型係止部材と前記雌型係止部材との連結時に、前記雄型係止部材の外周面に圧接するとともに、前記雄型係止部材に抜け方向の力が作用した時に、該雄型係止部材を挿入方向に付勢して、雄型係止部材の抜けを抑制する抜止部材を設けた連結具を使用し、
前記雌型連結部材を、連結すべき一方のコンクリート部材に固設し、前記雄型連結部材を連結すべき他方のコンクリート部材に固設したことを特徴とするコンクリート部材の連結装置。 It consists of a female connection member and a male connection member,
A female mold in which a storage chamber having an opening at the tip is provided inside the female connecting member, and a locking portion whose inner diameter gradually increases from the tip toward the back is formed on the inner surface in the storage chamber. While providing a locking member,
At the front part of the male connecting member, a male locking member is provided with a locking part formed on the outer surface, the diameter of which decreases from the front part toward the back part.
By inserting the male locking member between the female locking members, the locking hole constituted by the female locking member is expanded in diameter, and then the locking hole is reduced in diameter by the biasing means. The engaging portion of the female locking member and the locking portion of the male locking member are engaged,
When the male locking member and the female locking member are connected to each other in the storage chamber, the male locking member is pressed against the outer peripheral surface of the male locking member, and a pulling force acts on the male locking member. When using the connector provided with a retaining member that urges the male locking member in the insertion direction to prevent the male locking member from coming off,
A connecting device for a concrete member, wherein the female connecting member is fixed to one concrete member to be connected, and the male connecting member is fixed to the other concrete member to be connected. 前記抜止部材は、プッシュナット又はスピードナットであることを特徴とする請求項５又は６記載のコンクリート部材の連結装置。   7. The connecting device for a concrete member according to claim 5, wherein the retaining member is a push nut or a speed nut. 前記コンクリート部材が、シールドセグメントであることを特徴とする請求項５又は６又は７記載のコンクリート部材の連結装置。   The concrete member connecting device according to claim 5, wherein the concrete member is a shield segment.
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