JP5199755B2 - Detachment preventing structure of joint part and perforation device used therefor - Google Patents

Detachment preventing structure of joint part and perforation device used therefor Download PDF

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JP5199755B2
JP5199755B2 JP2008173254A JP2008173254A JP5199755B2 JP 5199755 B2 JP5199755 B2 JP 5199755B2 JP 2008173254 A JP2008173254 A JP 2008173254A JP 2008173254 A JP2008173254 A JP 2008173254A JP 5199755 B2 JP5199755 B2 JP 5199755B2
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cylinder
radial direction
tube
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pipe
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浩之 戸次
裕之 伊藤
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CITY OF NAGOYA
Taisei Kiko Co Ltd
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Description

本発明は、例えば、水道管等の流体管同士又は流体管と仕切弁等の流体機器とが直接嵌合接続されている継手部、或いは、隣接配置される両流体管又は流体管と流体機器とが管継ぎ輪を介して接続されている継手部などのように、流路を構成する両筒部を密封状態で嵌合接続してある継手部の離脱防止構造、及びそれに用いられる穿孔装置に関する。   The present invention is, for example, a joint portion in which fluid pipes such as water pipes or fluid pipes and fluid equipment such as gate valves are directly fitted and connected, or both fluid pipes or fluid pipes and fluid equipment arranged adjacent to each other. Structure for preventing detachment of a joint part in which both cylindrical parts constituting a flow path are fitted and connected in a sealed state, such as a joint part connected to each other via a pipe joint ring, and a perforation device used therefor About.

この種の継手部の離脱防止構造では、嵌合接続された両筒部のうち、一方の小径側筒部の外周面と他方の大径側筒部の内周面との対向面間を密封する密封手段として種々の構造が提案されているが、例えば、特許文献１に示す密封手段の場合では、小径側筒部の一例である挿口管部の外周面の先端側に漏れ止め用のヤーンを巻回するとともに、大径側筒部の一例である受口管部の大径内周面には径方向外方に窪む抜止め用の環状溝を形成して、挿口管部の外周面と受口管部の大径内周面との対向面間に鉛を流し込むことにより、対向面間を密封し、両管部を接続状態で抜止め保持している。   In this type of joint separation prevention structure, between the fitting and connected cylinder parts, the gap between the outer peripheral surface of one small diameter side cylinder part and the inner peripheral surface of the other large diameter side cylinder part is sealed. For example, in the case of the sealing means shown in Patent Document 1, a leak-proofing means is provided on the distal end side of the outer peripheral surface of the insertion tube portion which is an example of a small-diameter side cylindrical portion. The insertion tube portion is formed by winding a yarn and forming a retaining annular groove recessed radially outward on the large diameter inner peripheral surface of the receiving tube portion which is an example of the large diameter side tube portion. By flowing lead between the opposed surfaces of the outer peripheral surface of the tube and the large-diameter inner peripheral surface of the receiving tube portion, the space between the opposed surfaces is sealed, and both the tube portions are retained in a connected state.

また、特許文献２に示す場合では、小径側筒部の一例である挿口管部の外周面と大径側筒部の一例である受口管部の大径内周面との対向面間に円環状の弾性シール材を装着し、この弾性シール材を管軸芯方向から圧縮可能な押圧部を備えた押輪を挿口管部に外装するとともに、前記受口管部の外周面の端部に形成したフランジ部と押輪とを管軸芯方向で引寄せ固定するボルト・ナットを設けて、前記ボルト・ナットによる締付け固定操作に伴う受口管部と押輪との相対近接移動により、弾性シール材を密封状態に圧縮すると同時に、両管部を接続状態で抜止め保持している。   Moreover, in the case shown in Patent Document 2, between the opposing surfaces of the outer peripheral surface of the insertion tube portion that is an example of the small-diameter side cylindrical portion and the large-diameter inner peripheral surface of the receiving tube portion that is an example of the large-diameter side cylindrical portion. An annular elastic sealing material is attached to the outer tube, and a push ring provided with a pressing portion capable of compressing the elastic sealing material from the tube axis direction is externally mounted on the insertion tube portion, and an end of the outer peripheral surface of the receiving tube portion. Bolts and nuts that pull and fix the flange part and press ring formed in the pipe part in the direction of the tube axis are provided, and the elastic movement is achieved by the relative proximity movement between the receiving pipe part and the press ring in accordance with the tightening and fixing operation by the bolt and nut. At the same time as compressing the sealing material into a sealed state, both pipe parts are held out in a connected state.

そして、上述のような密封手段だけでは、地震や不同沈下等に起因する大きな引抜力には対抗できないため、継手部の離脱防止構造における離脱阻止機能の向上を図ることが要望されており、その改善方法として、従来では、次の離脱防止方法が提案されている。
（１）特許文献１〜３に示す管継手部の離脱防止方法では、嵌合接続された両筒部の嵌合接続部分における特定部位に、径方向内方側に開口する状態で互いに径方向で連通する被係合部である係合孔が形成され、そのうち、少なくとも大径側筒部の係合孔に径方向内方側から雌ネジが形成され、前記両係合孔にわたって、両筒部の流路方向での相対移動を阻止する係合部材であるボルトが径方向内方側から螺合装着されている。 And, since only the sealing means as described above cannot cope with a large pulling force caused by an earthquake or uneven subsidence, etc., it is desired to improve the separation preventing function in the joint prevention structure. As an improvement method, conventionally, the following separation prevention method has been proposed.
(1) In the method for preventing the disconnection of the pipe joint portion shown in Patent Documents 1 to 3, a specific portion in the fitting connection portion of both the tubular portions that are fitted and connected to each other in a state of opening radially inward. An engagement hole, which is an engaged portion communicating with each other, is formed, of which a female screw is formed from the radially inner side in at least the engagement hole of the large-diameter side cylinder portion, A bolt that is an engaging member that prevents relative movement of the portion in the flow path direction is screwed in from the radially inner side.

実開昭５９−１５３７９３号公報Japanese Utility Model Publication No.59-153793 実開昭６０−６５４９７号公報Japanese Utility Model Publication No. 60-65497 特開２００７−１１３６４４号公報JP 2007-113644 A

従来の継手部の離脱防止構造では、嵌合接続された両筒部の嵌合接続部分における特定部位に電動ドリル等の穿孔装置で係合孔を形成したのち、少なくとも大径側筒部の係合孔にタッピング装置で雌ネジを形成する必要があり、しかも、前記小径側筒部の係合孔を通して大径側筒部の係合孔にボルトを螺合操作する必要があるため、施工現場での作業工数が増加するとともに、装着操作が煩雑化する問題がある。   In the conventional structure for preventing the separation of the joint portion, an engagement hole is formed in a specific portion of the fitting connection portion of both the fitted and connected cylinder portions by a drilling device such as an electric drill, and then at least the engagement of the large-diameter side cylinder portion is performed. Since it is necessary to form a female screw with a tapping device in the joint hole, and it is necessary to screw the bolt into the engagement hole of the large diameter side cylinder part through the engagement hole of the small diameter side cylinder part, the construction site There is a problem that the number of working steps increases and the mounting operation becomes complicated.

本発明は、上述の実状に鑑みて為されたものであって、その主たる課題は、前記両筒部の被係合部に装着される係合部材を主体とする合理的な改造により、両筒部の流路方向での相対離脱移動を阻止する機能を良好に発揮させつつ、施工現場での作業工数の削減と装着操作の簡便化を図ることのできる継手部の離脱防止構造と、それの施工時に有効に用いることのできる穿孔装置を提供する点にある。   The present invention has been made in view of the above-mentioned actual situation, and the main problem is that both are achieved by rational modification mainly of engaging members attached to the engaged portions of the two cylindrical portions. A structure for preventing the separation of the joint part that can reduce the work man-hours at the construction site and simplify the mounting operation, while well exhibiting the function of preventing the relative separation movement in the flow path direction of the cylinder part, and It is in the point which provides the drilling apparatus which can be used effectively at the time of construction of this.

本発明による第１の特徴構成は、流路を構成する状態で嵌合接続される両筒部の嵌合接続部分における特定部位に、筒径方向内方側に開口する状態で互いに筒径方向で連通する被係合部が形成され、前記両被係合部にわたって、両筒部の流路方向での相対移動を阻止する係合部材が筒径方向内方側から挿入装着されている継手部の離脱防止構造であって、
前記両筒部の被係合部に装着された係合部材の筒径方向内方への抜け出し移動に抵抗を付与する抜け出し抑制手段が設けられ、
前記抜け出し抑制手段を構成するに、前記両筒部の被係合部が同一内径の係止孔から構成され、当該両係止孔の内径と同一又は略同一の外径に形成され且つ外径及び内径が筒径方向で夫々同一となるストレート形状に形成された弾性筒部材が、筒径方向で連通する両係止孔に対して筒径方向内方側から挿入装着されているとともに、前記弾性筒部材内に、該弾性筒部材の内径よりも大なる外径部位を備えたテーパー状に形成され、且つ、先端側の最小外径が前記弾性筒部材の内径と同一又はそれよりも小に形成された係合部材が筒径方向内方側から圧入されている点にある。 The first characteristic configuration according to the present invention is a cylinder radial direction in a state of opening to the inner side in the cylinder radial direction at a specific portion in the fitting connection portion of both the cylinder portions that are fitted and connected in a state of constituting the flow path. And a coupling member in which an engagement member that prevents relative movement in the flow channel direction of both cylinder parts is inserted and mounted from the inner side in the cylinder radial direction. Part prevention structure,
Disengagement restraining means for providing resistance to the disengagement movement of the engaging members attached to the engaged portions of both the tubular portions inward in the cylinder radial direction is provided ,
To constitute the pull-out suppressing means, the engaged portions of both the cylinder portions are formed of locking holes having the same inner diameter, and are formed to have the same or substantially the same outer diameter as the inner diameters of the both locking holes. And an elastic cylinder member formed in a straight shape having the same inner diameter in the cylinder radial direction is inserted and mounted from the inner side in the cylinder radial direction with respect to both locking holes communicating in the cylinder radial direction, The elastic cylinder member is formed in a tapered shape having an outer diameter portion larger than the inner diameter of the elastic cylinder member, and the minimum outer diameter on the distal end side is the same as or smaller than the inner diameter of the elastic cylinder member. The engaging member formed in is press-fitted from the inner side in the cylinder radial direction .

上記構成によれば、前記両筒部の嵌合接続部分における特定部位に形成された両被係合部に対して筒径方向内方側から係合部材を挿入装着することにより、両筒部の流路方向での相対離脱移動を強力に阻止することができる。しかも、前記両筒部の被係合部に装着された係合部材に対して他の部位での被係合部の切削加工等に起因する振動が作用しても、前記抜け出し抑制手段による移動抵抗付与作用によって、被係合部に装着された係合部材の筒径方向内方への抜け出し移動を抑制することができる。   According to the above configuration, by inserting and attaching the engaging member from the inner side in the cylindrical radial direction to the both engaged portions formed at the specific portions in the fitting connection portions of the both cylindrical portions, both the cylindrical portions The relative detachment movement in the direction of the flow path can be strongly prevented. In addition, even if vibrations caused by cutting of the engaged portion in other parts are applied to the engaging members attached to the engaged portions of the both cylindrical portions, the movement by the withdrawal restraining means is performed. Due to the resistance imparting action, the engagement member attached to the engaged portion can be prevented from moving out inward in the cylinder radial direction.

従って、前記両筒部の被係合部に対して係合部材を挿入装着するだけでありながら、装着された係合部材を所定位置に維持することができるから、両筒部の離脱阻止機能を高めつつ、施工現場での作業工数の削減と装着操作の簡便化を図ることができる。   Therefore, since it is possible to keep the mounted engaging member in a predetermined position while only inserting and mounting the engaging member with respect to the engaged portions of the both cylindrical portions, the function of preventing separation of both the cylindrical portions. It is possible to reduce the work man-hours at the construction site and simplify the mounting operation.

また、前記両筒部の嵌合接続部分における特定部位に形成された両係止孔に対して筒径方向内方側から係合部材を挿入装着する際、前記両係止孔にわたって挿入装着された弾性筒部材に対してテーパー形状の係合部材を筒径方向内方側から圧入することにより、この圧入に連れて両係止孔の内周面と係合部材の外周面との間で弾性筒部材が圧縮され、係合部材の楔効果を利用して両係止孔に確実に抜止め保持させることができる。 Further, when the engaging member is inserted and mounted from the inner side in the cylinder radial direction to the both locking holes formed in the specific part of the fitting connection portion of the both cylindrical portions, the mounting and insertion is performed across the both locking holes. By press-fitting a tapered engaging member into the elastic cylindrical member from the inner side in the cylinder radial direction, the press-fitting between the inner peripheral surface of both locking holes and the outer peripheral surface of the engaging member. The elastic cylindrical member is compressed, and can be securely held in both locking holes by utilizing the wedge effect of the engaging member.

しかも、前記係合部材の先端側の最小外径が弾性筒部材の内径と同一又はそれよりも小に形成されているので、両係止孔に挿入装着されている弾性筒部材に対して係合部材を簡単にセットすることができる。   In addition, since the minimum outer diameter on the distal end side of the engagement member is formed to be the same as or smaller than the inner diameter of the elastic cylinder member, the engagement member is engaged with the elastic cylinder member inserted and mounted in both the locking holes. The joint member can be easily set.

したがって、前記係合部材の離脱防止機能を維持するための抜け出し抑制手段を設けながらも、このテーパー形状の係合部材を両係止孔に挿入装着されている弾性筒部材に対して圧入操作するだけで済み、装着操作の簡便化を促進することができる。   Therefore, the taper-shaped engaging member is press-fitted into the elastic cylindrical member inserted and mounted in both the locking holes while providing a pull-out suppressing means for maintaining the function of preventing the engagement member from being detached. It is only necessary to facilitate the mounting operation.

本発明による第２の特徴構成は、前記弾性筒部材が有底筒状に形成され、当該有底筒状に形成された弾性筒部材において前記ストレート形状に形成された筒部の厚みが底部の厚みより厚く形成されている点にある。 According to a second characteristic configuration of the present invention, the elastic cylindrical member is formed in a bottomed cylindrical shape, and the thickness of the cylindrical portion formed in the straight shape in the elastic cylindrical member formed in the bottomed cylindrical shape is the bottom portion. It is in the point formed thicker than thickness .

本発明による第３の特徴構成は、前記両筒部のうち、一方の小径側筒部が、流路方向に沿って隣接配置される両管部であり、他方の大径側筒部が、前記両管部に密封状態で外嵌接続される管継ぎ輪であって、前記両管部と管継ぎ輪の流路方向両側部との特定部位に形成された被係合部にわたって前記係合部材が装着されているとともに、前記係合部材の筒径方向内方側を密封する状態で前記両管部の内周面にわたって当て付けられる円環状の内面バンドと、該内面バンドを両管部の内周面に押し付け固定する圧着手段が設けられている点にある。 According to a third characteristic configuration of the present invention, of the two cylindrical portions, one small-diameter side cylindrical portion is a two-pipe portion arranged adjacently along the flow path direction, and the other large-diameter side cylindrical portion is A pipe joint that is externally connected to both the pipe parts in a sealed state, and the engagement is carried out over engaged parts formed at specific portions of the pipe parts and both sides in the flow passage direction of the pipe joint ring. A ring-shaped inner surface band which is applied to the inner peripheral surfaces of the two tube portions in a state where the member is mounted and the inner side in the cylinder radial direction of the engaging member is sealed; There is a crimping means for pressing and fixing to the inner peripheral surface.

上記構成によれば、前記流路方向に沿って隣接配置される一方の管部の特定部位に形成された被係合部とこれに筒径方向で相対向する管継ぎ輪の一側部に形成された被係合部とにわたって筒径方向内方側から係合部材を挿入装着し、かつ、他方の管部の特定部位に形成された被係合部とこれに筒径方向で相対向する管継ぎ輪の他側部に形成された被係合部とにわたって筒径方向内方側から係合部材を挿入装着することにより、両管部と管継ぎ輪との流路方向での相対離脱移動を強力に阻止することができる。   According to the above configuration, the engaged portion formed at the specific portion of the one pipe portion disposed adjacently along the flow path direction and the one side portion of the pipe joint ring opposed to the engaged portion in the cylinder radial direction. The engaging member is inserted and mounted from the inner side in the cylinder radial direction over the formed engaged part, and opposed to the engaged part formed in a specific part of the other pipe part in the cylinder radial direction. By inserting and attaching the engaging member from the inner side in the cylindrical radial direction over the engaged portion formed on the other side of the pipe joint ring, the relative relationship in the flow channel direction between both pipe parts and the pipe joint ring is achieved. It is possible to prevent the separation movement.

しかも、前記両管部の被係合部と管継ぎ輪の被係合部とにわたって装着された係合部材に対して、他の部位での被係合部の切削加工等に起因する振動が作用しても、前記抜け出し抑制手段による移動抵抗付与作用によって、前記被係合部に装着された係合部材の筒径方向内方への抜け出し移動を抑制することができる。   In addition, the engagement member mounted across the engaged portion of both the pipe portions and the engaged portion of the pipe joint ring is subject to vibration caused by cutting of the engaged portion at other sites. Even if the action is exerted, the movement of the engagement member attached to the engaged portion can be prevented from moving inward in the cylinder radial direction by the movement resistance imparting action by the pull-out suppressing means.

さらに、前記内面バンドを、前記両管部の内周面にわたって当て付けた状態で装着し、この内面バンドを圧着手段で両管部の内周面に押し付け固定することにより、前記係合部材の筒径方向内方側が流路から区画された状態で密封されるため、両管部と管継ぎ輪との間のシール性能の向上を図ることができるとともに、前記係合部材の腐食を抑制することができる。   Further, the inner band is mounted in a state of being applied over the inner peripheral surfaces of the two pipe parts, and the inner band is pressed and fixed to the inner peripheral surfaces of the two pipe parts by a crimping means, thereby Since the inner side in the cylinder radial direction is sealed in a state partitioned from the flow path, it is possible to improve the sealing performance between the two pipe portions and the pipe joint ring, and to suppress corrosion of the engaging member. be able to.

本発明による第４の特徴構成は、前記両筒部のうち、一方の小径側筒部が、流路方向に沿って配置される挿口管部であり、他方の大径側筒部が、前記挿口管部に対して密封状態で外嵌接続される受口管部であって、前記挿口管部と受口管部との特定部位に形成された被係合部にわたって前記係合部材が装着されているとともに、前記係合部材の筒径方向内方側を密封する状態で前記両管部の内周面にわたって当て付けられる円環状の内面バンドと、該内面バンドを両管部の内周面に押し付け固定する圧着手段が設けられている点にある。 According to a fourth characteristic configuration of the present invention, of the two cylindrical portions, one small diameter side cylindrical portion is an insertion tube portion arranged along the flow path direction, and the other large diameter side cylindrical portion is A receiving tube portion that is externally connected to the insertion tube portion in a sealed state, and is engaged over an engaged portion formed at a specific portion of the insertion tube portion and the reception tube portion. A ring-shaped inner surface band which is applied to the inner peripheral surfaces of the two tube portions in a state where the member is mounted and the inner side in the cylinder radial direction of the engaging member is sealed; There is a crimping means for pressing and fixing to the inner peripheral surface.

上記構成によれば、前記挿口管部の特定部位に形成された被係合部とこれに筒径方向で相対向する受口管部に形成された被係合部とにわたって筒径方向内方側から係合部材を挿入装着することにより、両管部と管継ぎ輪との流路方向での相対離脱移動を強力に阻止することができる。しかも、前記両管部の被係合部にわたって装着された係合部材に対して、他の部位での被係合部の切削加工等に起因する振動が作用しても、前記抜け出し抑制手段による移動抵抗付与作用によって、前記被係合部に装着された係合部材の筒径方向内方への抜け出し移動を抑制することができる。   According to the above configuration, the engaged portion formed in the specific portion of the insertion tube portion and the engaged portion formed in the receiving tube portion opposite to the engaged portion in the tube radial direction are in the tube radial direction. By inserting and mounting the engaging member from the side, it is possible to strongly prevent the relative disengagement movement in the flow path direction between the two pipe portions and the pipe joint ring. Moreover, even if vibrations caused by cutting of the engaged portion in other parts act on the engaging member mounted over the engaged portions of the both pipe portions, the pull-out suppressing means Due to the movement resistance imparting action, it is possible to suppress the movement of the engaging member attached to the engaged portion to the inside in the cylinder radial direction.

さらに、前記内面バンドを、前記両管部の内周面にわたって当て付けた状態で装着し、この内面バンドを圧着手段で両管部の内周面に押し付け固定することにより、前記係合部材の筒径方向内方側が流路から区画された状態で密封されるため、両管部と管継ぎ輪との間のシール性能の向上を図ることができる。   Further, the inner band is mounted in a state of being applied over the inner peripheral surfaces of the two pipe parts, and the inner band is pressed and fixed to the inner peripheral surfaces of the two pipe parts by a crimping means, thereby Since sealing is performed in a state where the inner side in the cylinder radial direction is partitioned from the flow path, it is possible to improve the sealing performance between both the pipe portions and the pipe joint ring.

本発明による第５の特徴構成は、上述の１〜４のいずれか一つの特徴構成を備えた継手部の離脱防止構造の施工に用いられる穿孔装置であって、前記筒部の内壁に対して筒径方向から突っ張り状態で固定ならびに固定解除可能な突っ張り固定手段に、筒部の軸芯又は略軸芯周りで相対回転可能な回転機枠と、該回転機枠を強制回転させる強制回転手段を設けるとともに、前記回転機枠には、前記両筒部にわたって筒径方向から前記被係合部を形成可能な回転穿孔手段と、該回転穿孔手段を筒径方向に移動させる径方向送込み手段と、前記回転穿孔手段を筒部の軸芯又は略軸芯周りで円周方向に沿って移動させる周方向送込み手段と、前記回転機枠を筒部の内壁に沿って円周方向に回動案内する回動案内手段が設けられている点にある。 A fifth characteristic configuration according to the present invention is a perforation apparatus used for construction of a joint part detachment prevention structure including any one of the above-described characteristic configurations of 1 to 4 , and is configured with respect to an inner wall of the cylindrical portion. In the tension fixing means that can be fixed and released in a tension state from the cylinder diameter direction, a rotating machine frame that can be relatively rotated around the axis of the cylinder part or substantially around the axis, and a forced rotating means for forcibly rotating the rotating machine frame And a rotary punching means capable of forming the engaged portion from the cylindrical radial direction across the cylindrical portions, and a radial feed means for moving the rotary punching means in the cylindrical radial direction. , A circumferential feed means for moving the rotary punching means along the circumferential direction around the axial center of the cylindrical portion or substantially the axial center, and the rotating machine frame rotating circumferentially along the inner wall of the cylindrical portion There exists the point which the rotation guidance means to guide is provided.

上記構成によれば、例えば、前記筒部の内壁の周方向複数箇所の特定部位に被係合部である円形状の係合孔を形成する場合には、前記筒部内の設定作業位置で突っ張り固定手段を固定操作し、前記回転機枠に設けられた回転穿孔手段を内壁の設定穿孔位置に位置させ、この状態で前記径方向送込み手段にて回転穿孔手段を筒径方向に設定量だけ送り込み移動させることにより、前記筒部の内壁の特定部位に被係合部である円形状の係合孔を形成することができる。   According to the above configuration, for example, in the case where circular engagement holes that are engaged portions are formed at a plurality of specific portions in the circumferential direction on the inner wall of the cylindrical portion, the cylindrical engagement holes are stretched at the setting work position in the cylindrical portion. The fixing means is fixedly operated, and the rotary punching means provided in the rotating machine frame is positioned at the set punching position on the inner wall. In this state, the rotary punching means is set in the cylinder radial direction by a set amount by the radial feeding means. By performing the feed-in movement, a circular engagement hole that is an engaged portion can be formed in a specific portion of the inner wall of the cylindrical portion.

また、前記筒部の内壁の周方向複数箇所の特定部位に被係合部である長円形状の係合孔を形成する場合には、前記筒部内の設定作業位置で突っ張り固定手段を固定操作し、前記回転機枠に設けられた回転穿孔手段を内壁の設定穿孔位置に位置させ、この状態で前記径方向送込み手段にて回転穿孔手段を筒径方向に設定量だけ送り込み移動させるとともに、前記周方向送込み手段にて回転穿孔手段を筒部の軸芯又は略軸芯周りで円周方向に沿って設定量だけ送り込み移動させることにより、前記筒部の内壁の特定部位に被係合部である長円形状の係合孔を形成することができる。
この長円形状の係合孔は、前記回転穿孔手段が筒部の軸芯又は略軸芯周りで円周方向に沿って回動するため、筒径方向内方側への開口位置における横断面積よりも筒径方向外方側ほど内部横断面積が次第に大となる。換言すれば、前記長円形状係合孔は、それの周方向長さが開口位置よりも筒径方向外方側ほど大となるテーパー状に形成されることになる。 In addition, when an elliptical engagement hole that is an engaged portion is formed at a plurality of specific locations in the circumferential direction of the inner wall of the cylindrical portion, the tension fixing means is fixedly operated at a setting work position in the cylindrical portion. Then, the rotary perforation means provided in the rotating machine frame is positioned at the set perforation position on the inner wall, and in this state, the rotary perforation means is fed and moved in the cylinder radial direction by a set amount. The circumferential perforation means engages with a specific portion of the inner wall of the cylindrical portion by feeding and moving the rotary punching means by a set amount along the circumferential direction around the axial center of the cylindrical portion or substantially the axial center. An elliptical engagement hole which is a portion can be formed.
This oblong engagement hole has a cross-sectional area at the opening position inward in the cylinder radial direction because the rotary punching means rotates in the circumferential direction around the axis of the cylinder part or substantially around the axis. The inner cross-sectional area gradually increases toward the outer side in the cylinder radial direction. In other words, the oval coupling hole, ing to the circumferential length of it is formed into a tapered shape having a cylindrical radially outward as the side larger than the opening position.

さらに、一つの設定穿孔位置での穿孔作業が終了すると、前記強制回転手段にて回転機枠を突っ張り固定手段に対して強制回転させる際、前記回動案内手段にて回転機枠を筒部の内壁に沿って円周方向に沿ってスムーズに回動案内することができる。   Further, when the drilling operation at one set drilling position is finished, when the rotating machine frame is forcibly rotated with respect to the tension fixing means by the forced rotating means, the rotating guide frame is moved to the cylindrical portion by the rotating guide means. Smooth rotation guidance can be performed along the circumferential direction along the inner wall.

しかも、前記突っ張り固定手段が固定解除操作された状態では、前記回動案内手段による案内機能を利用して機体を支持することができるから、突っ張り固定手段の突っ張り固定位置の変更及び流路に沿っての移動を容易に行うことができる。   In addition, in the state where the tension fixing means is unlocked, the body can be supported using the guide function of the rotation guiding means, so that the tension fixing position of the tension fixing means can be changed and the flow path can be changed. Can be easily moved.

〔第１参考例〕
図１〜図３は、水道管やガス管等の流体管Ｐの配管系に用いられる管継手部（継手部）の一例を示し、この管継手部では、下流路方向に沿って隣接配置される鋳鉄製の両流体管Ｐの接続管部（小径側筒部の一例）１にわたって、当該両接続管部１に対して管軸芯Ｘ方向（流路方向）から鋳鉄製の管継ぎ輪（大径側筒部の一例）２が外嵌接続され、この管継ぎ輪２の内周面２ａにおける両嵌合接続部位には、管径方向（筒径方向）外方に窪む横断三角形状の抜止め用環状溝２ｂが形成されているとともに、前記両流体管Ｐの接続管部１の外周面１ａと管継ぎ輪２の内周面２ａとの対向面間に形成される環状空間Ｓで、且つ、前記両抜止め用環状溝２ｂよりも管継ぎ輪２の管軸芯Ｘ方向中央側に少し偏倚した部位には、前記環状空間Ｓを密封処理する麻等のシール部材３が充填され、さらに、前記環状空間Ｓにおける前記両シール部材３の管軸芯Ｘ方向外側に連続する領域には、離脱阻止部材としての鉛４を前記両抜止め用環状溝２ｂ含めた環状空間部分全体にわたる状態で充填することにより、前記両流体管Ｐの接続管部１と管継ぎ輪２とが嵌合接続状態で抜止め保持されている。 [First Reference Example ]
1 to 3 show an example of a pipe joint part (joint part) used in a piping system of a fluid pipe P such as a water pipe or a gas pipe. In this pipe joint part, the pipe joint part is arranged adjacently along the lower flow path direction. Over the connecting pipe part (an example of a small diameter side cylinder part) 1 of both fluid pipes P made of cast iron, a cast iron pipe joint (from the pipe axis X direction (flow channel direction) to the both connecting pipe parts 1 ( An example of a large-diameter side cylinder portion) 2 is externally connected, and both fitting connection portions on the inner peripheral surface 2a of the pipe joint 2 have a transverse triangular shape that is recessed outward in the pipe radial direction (cylinder radial direction). And an annular space S formed between the opposed surfaces of the outer peripheral surface 1a of the connecting pipe portion 1 of the fluid pipes P and the inner peripheral surface 2a of the pipe joint ring 2. In addition, the annular space S is sealed at a portion slightly deviated to the center side in the tube axis X direction of the pipe joint 2 from both the annular grooves 2b for preventing the removal. In addition, in the annular space S, the lead 4 as the separation preventing member is used for preventing both of the sealing members 3 in the annular space S and continuing to the outside of the two sealing members 3 in the tube axis X direction. By filling in a state covering the entire annular space including the annular groove 2b, the connecting pipe portion 1 and the pipe joint 2 of both the fluid pipes P are held in a fitted connection state.

前記両シール部材３及び鉛４をもって、前記両流体管Ｐの接続管部１の外周面１ａと管継ぎ輪２の内周面２ａとの対向面間を密封する密封手段Ａが構成されている。   The sealing means A that seals between the opposing surfaces of the outer peripheral surface 1a of the connecting pipe portion 1 of the both fluid pipes P and the inner peripheral surface 2a of the pipe joint ring 2 is constituted by the both seal members 3 and the lead 4. .

そして、上記管継手部に適用される本発明の離脱防止構造は、図１〜図３に示すように、前記両流体管Ｐの接続管部１の内周面１ｂにおける前記管継ぎ輪２の管軸芯Ｘ方向長さよりも大きな領域にわたって、全体が密封用の弾性シール層に構成されている円環状のゴム製の内面バンド５が装着され、この内面バンド５の管軸芯Ｘ方向両端部及び中央部を接続管部１の内周面１ｂに押し付け固定する圧着手段Ｂと、前記内面バンド５で密封される部位において前記両流体管Ｐの接続管部１と管継ぎ輪２とを管軸芯Ｘ方向での相対移動を阻止する状態で固定連結する固定連結手段Ｃが設けられているとともに、前記内面バンド５と圧着手段Ｂとをもって、前記固定連結手段Ｃを構成する係合部材の一例である係合ピン２１を管内部に対して密封状態で覆う管内密封手段Ｄが構成され、さらに、前記両流体管Ｐの接続管部１に形成された被係合部の一例である円形状の係合孔１９と管継ぎ輪２に形成された被係合部の一例である円形状の係合孔２０とにわたって挿入装着された前記係合ピン２１の管径方向内方側への抜け出し移動に抵抗を付与する抜け出し抑制手段Ｅが設けられている。   And the detachment preventing structure of the present invention applied to the pipe joint portion is, as shown in FIGS. 1 to 3, the pipe joint 2 on the inner peripheral surface 1 b of the connecting pipe portion 1 of both fluid pipes P. An annular rubber inner band 5 that is entirely configured as an elastic sealing layer for sealing is attached over a region larger than the length in the tube axis X direction, and both ends of the inner band 5 in the tube axis X direction are mounted. And crimping means B that presses and fixes the central portion to the inner peripheral surface 1b of the connecting pipe portion 1, and the connecting pipe portion 1 and the pipe joint 2 of the two fluid pipes P at the portion sealed by the inner band 5 A fixed connection means C is provided for fixed connection in a state in which relative movement in the axis X direction is prevented, and an engagement member constituting the fixed connection means C is constituted by the inner band 5 and the crimping means B. As an example, the engagement pin 21 is sealed with respect to the inside of the tube. In-pipe sealing means D is formed, and is further formed in a circular engagement hole 19 and a pipe joint 2 which are examples of engaged parts formed in the connection pipe part 1 of both fluid pipes P. A pull-out restraining means E is provided to give resistance to the pull-out movement of the engagement pin 21 inserted and mounted over the circular engagement hole 20 which is an example of the engaged portion to the inner side in the tube radial direction. Yes.

前記内面バンド５は、図１〜図３に示すように、両流体管Ｐの接続管部１における内周面１ｂの内径と同一又は略同一寸法の外径で円環状に成形されており、この内面バンド５の外周面における管軸芯Ｘ方向両側部及び中央部から管径方向外方側に突出形成された環状基台部５Ａの各々には、モルタルライニング層７が剥離処理された両流体管Ｐの接続管部１の内周面１ｂに接触する複数個（当該実施形態では３個）の横断面半円形状の円環状シール部５ａが管軸芯Ｘ方向に所定ピッチで一体形成されている。   As shown in FIGS. 1 to 3, the inner surface band 5 is formed in an annular shape with an outer diameter that is the same as or substantially the same as the inner diameter of the inner peripheral surface 1 b of the connecting pipe portion 1 of both fluid pipes P. The mortar lining layer 7 is peeled off on each of the annular base portions 5A formed on the outer peripheral surface of the inner surface band 5 so as to protrude from the both sides and center of the tube axis X direction toward the outer side in the tube diameter direction. A plurality (three in the present embodiment) of annular seal portions 5a having a semicircular cross-sectional shape in contact with the inner peripheral surface 1b of the connecting pipe portion 1 of the fluid pipe P are integrally formed at a predetermined pitch in the tube axis X direction. Has been.

前記内面バンド５の管軸芯Ｘ方向両端部５Ｂの各々は、モルタルライニング層７が剥離処理された両流体管Ｐの接続管部１の内周面１ｂに対して前記円環状シール部５ａと略同じシール状態で接触するべく、前記円環状シール部５ａの先端を通る管軸芯Ｘ方向の仮想鉛直線と同じ位置まで管径方向外方側に屈曲形成されているとともに、前記内面バンド５の外周面における環状基台部５Ａの隣接間には、前記固定連結手段Ｃの係合ピン２１の管径方向内端側が入り込み可能な環状凹部５Ｃが形成され、この環状凹部５Ｃの底面と前記係合ピン２１の管径方向内端との対向面間隔が、当該係合ピン２１の管径方向外端部と前記管継ぎ輪２との係合深さよりも小に設定されている。   Each of the both ends 5B of the inner surface band 5 in the tube axis X direction is connected to the annular seal portion 5a with respect to the inner peripheral surface 1b of the connecting pipe portion 1 of both fluid pipes P from which the mortar lining layer 7 is peeled off. In order to make contact in substantially the same sealing state, the inner surface band 5 is bent to the outer side in the tube radial direction to the same position as the virtual vertical line in the tube axis X direction passing through the tip of the annular seal portion 5a. An annular recess 5C in which the inner end side in the tube radial direction of the engagement pin 21 of the fixed connection means C can enter is formed between the annular base portion 5A on the outer peripheral surface of the outer peripheral surface of the annular recess 5C. The distance between the opposing surfaces of the engagement pin 21 and the inner end in the pipe radial direction is set to be smaller than the engagement depth between the outer end in the pipe radial direction of the engagement pin 21 and the pipe joint ring 2.

また、前記内面バンド５の内周面における少なくとも管軸芯Ｘ方向の４箇所（当該実施形態では６箇所）には環状リブ５Ｄが一体形成され、この環状リブ５Ｄの隣接間に形成される環状溝５Ｅのうち、前記環状基台部５Ａに対応する三つの環状溝５Ｅが、前記圧着手段Ｂを構成する三つの圧着具に対する装着用環状溝に構成されている。   An annular rib 5D is integrally formed at least at four locations (six locations in the present embodiment) in the tube axis X direction on the inner peripheral surface of the inner surface band 5, and an annular shape formed between adjacent annular ribs 5D. Among the grooves 5E, three annular grooves 5E corresponding to the annular base portion 5A are configured as mounting annular grooves for the three crimping tools constituting the crimping means B.

前記内面バンド５を構成する粘弾性高分子材料としては、天然ゴム、イソプロピレンゴム、ブタジエンゴム、ブチルゴム、クロロプレンゴム、ニトリルゴム等を挙げることができる。   Examples of the viscoelastic polymer material constituting the inner surface band 5 include natural rubber, isopropylene rubber, butadiene rubber, butyl rubber, chloroprene rubber, and nitrile rubber.

前記圧着手段Ｂを構成する三つの圧着具の各々は、図４〜図８に示すように、前記内面バンド５の装着用環状溝５Ｅの内径と同一又は略同一寸法の外径で円環状に湾曲形成され、かつ、その周方向の一箇所で分断された管径方向（拡径側と縮径側）に弾性変形可能な金属製の圧着帯状体１０の内周面の両端部には、管径方向内方に突出する角柱状の係止突起１１が設けられているとともに、前記両係止突起１１に対して管径方向内方側から係脱自在な係止凹部１２ａを形成してある係止体１２を備え、かつ、両係止体１２を内面バンド５の内周面に沿って離間移動させる拡径操作機構Ｂ１と、該拡径操作機構Ｂ１で拡径された間隔で両係止突起１１を固定連結する固定連結機構Ｂ２とが設けられている。   As shown in FIGS. 4 to 8, each of the three crimping tools constituting the crimping means B is formed in an annular shape with an outer diameter that is the same or substantially the same as the inner diameter of the mounting annular groove 5 </ b> E of the inner surface band 5. At both ends of the inner circumferential surface of the metal crimped strip 10 that is curved and elastically deformable in the pipe diameter direction (expanded side and reduced diameter side) divided at one place in the circumferential direction, A prism-shaped locking projection 11 projecting inward in the tube radial direction is provided, and a locking recess 12a that can be engaged and disengaged from the inner side in the tube radial direction with respect to the both locking projections 11 is formed. A diameter increasing operation mechanism B1 which includes a certain locking body 12 and moves both locking bodies 12 apart along the inner peripheral surface of the inner surface band 5, and both at intervals expanded by the diameter expansion operating mechanism B1. A fixed connection mechanism B2 for fixing and connecting the locking projection 11 is provided.

前記拡径操作機構Ｂ１は、両側に螺合方向が逆となる右用と左用のネジ部１３ａが形成されている操作ネジ軸１３のネジ軸芯方向中央位置に断面六角形の回転操作部１３ｂを形成するとともに、前記両回転操作部１３ｂに回転自在に枢支された枢支ピン１４には、前記操作ネジ軸１３の両ネジ部１３ａに螺合されるネジ孔を形成して、前記操作ネジ軸１３の回転操作部１３ｂの回転操作によって前記両枢支ピン１４をネジ軸芯方向に沿って遠近方向に移動させるように構成されている。   The diameter-expanding operation mechanism B1 has a hexagonal cross-sectional rotation operation portion 13b at the center position in the screw axis direction of the operation screw shaft 13 in which right and left screw portions 13a having opposite screwing directions are formed on both sides. In addition, a screw hole that is screwed into both screw portions 13a of the operation screw shaft 13 is formed in the pivot pin 14 rotatably supported by the both rotation operation portions 13b. The pivot pins 14 are moved in the perspective direction along the screw axis direction by the rotation operation of the rotation operation portion 13b of the screw shaft 13.

前記固定連結機構Ｂ２を構成するに、前記両係止突起１１に形成された管軸芯Ｘ方向に沿うネジ孔１１ａに対してボルト１５で螺合固定される固定連結板１６の片面に、内面バンド５の内周面に沿って前記圧着帯状体１０の両端面間に入り込み可能な先端側ほど幅狭となる両傾斜面１７ａを備えた台形状の間隔保持板１７Ａと、該間隔保持板１７と同一形状のガイド板１７Ｂとが、前記圧着帯状体１０の内周面の両端部に固着される外れ止め板１８の厚みに相当する間隔を隔てて固着されている。   To constitute the fixed connection mechanism B2, an inner surface is formed on one surface of a fixed connection plate 16 which is screwed and fixed with a bolt 15 to a screw hole 11a along the tube axis X direction formed on the both locking projections 11. A trapezoidal interval holding plate 17A provided with both inclined surfaces 17a having a narrower width toward the distal end side that can enter between the both end faces of the pressure-bonding band 10 along the inner peripheral surface of the band 5, and the interval holding plate 17 A guide plate 17B having the same shape as that of the pressure-removable plate 10 is fixed at an interval corresponding to the thickness of the stopper plate 18 fixed to both end portions of the inner peripheral surface of the pressure-bonding band 10.

他方、前記圧着帯状体１０の両端面には、前記間隔保持板１７Ａの両傾斜面１７ａに当接可能な同一勾配の傾斜面１０ａが形成されているとともに、前記外れ止め板１８が、圧着帯状体１０の両傾斜面１０ａに当て付けられた間隔保持板１７Ａの管径方向内方への外れ移動を接当阻止するべく、前記傾斜面１０ａよりも間隔保持板１７Ａの進入経路側に張り出す状態で圧着帯状体１０の内周面の両端部に固着されている。   On the other hand, on both end faces of the pressure-bonding band 10, inclined surfaces 10 a having the same gradient that can be brought into contact with both inclined surfaces 17 a of the spacing plate 17 A are formed. In order to prevent the spacing holding plate 17A applied to both the inclined surfaces 10a of the body 10 from moving inwardly in the radial direction of the pipe, it protrudes from the inclined surface 10a to the approach path side of the spacing holding plate 17A. In the state, it is fixed to both end portions of the inner peripheral surface of the pressure-bonding band 10.

さらに、前記固定連結板１６のボルト挿通孔１６ａは、前記拡径操作機構Ｂ１の拡径操作に伴う両係止突起１１のネジ孔１１ａの中心間隔（取付け間隔）の変動を吸収可能な長孔に構成されている。   Further, the bolt insertion hole 16a of the fixed connecting plate 16 is a long hole capable of absorbing the fluctuation of the center interval (attachment interval) of the screw holes 11a of the both locking projections 11 due to the diameter expansion operation of the diameter expansion operation mechanism B1. It is configured.

そして、前記拡径操作機構Ｂ１の拡径操作で圧着帯状体１０が内面バンド５の内周面に所定押圧力で押し付け固定されたとき、前記固定連結機構Ｂ２の間隔保持板１７Ａの両傾斜面１７ａを、前記圧着帯状体１０の両端面に形成された傾斜面１０ａに当て付け、この状態で固定連結板１６の両ボルト挿通孔１６ａに挿通されたボルト１５を圧着帯状体１０の両係止突起１１のネジ孔１１ａに螺合固定する。   When the pressure-bonding band 10 is pressed and fixed to the inner peripheral surface of the inner surface band 5 with a predetermined pressing force by the diameter expansion operation of the diameter expansion operation mechanism B1, both inclined surfaces of the spacing plate 17A of the fixed connection mechanism B2 17a is applied to the inclined surfaces 10a formed on both end surfaces of the pressure-bonding band 10, and in this state, the bolts 15 inserted into both the bolt insertion holes 16a of the fixed connecting plate 16 are both locked to the pressure-bonding band 10. The projection 11 is screwed and fixed to the screw hole 11a.

前記固定連結手段Ｃは、図１〜図３に示すように、両流体管Ｐの接続管部１のうち、モルタルライニング層７が剥離されている領域の端部近傍箇所における周方向複数の特定箇所と、これに管径方向で相対向する管継ぎ輪２の両嵌合接続部位における周方向複数の特定箇所に、管内部に搬入した穿孔装置によって管径方向で連通する被係合部の一例である円形状の係合孔１９，２０を管径方向内方に開口する状態で形成し、各管径方向で連通する係合孔１９，２０にわたって、係合部材の一例である円柱状の係合ピン２１を、管内側から管径方向に沿って挿入して所定係合位置に保持することにより、前記内面バンド５で密封される部位において、両管部１，２を管軸芯Ｘ方向での相対移動を阻止した状態で固定連結するように構成されている。   As shown in FIGS. 1 to 3, the fixed connecting means C includes a plurality of circumferential direction identifications in the vicinity of the end of the region where the mortar lining layer 7 is peeled, of the connecting pipe portions 1 of both fluid pipes P. And a portion of the engaged portion that communicates in the pipe radial direction with a perforating device carried into the pipe at a plurality of specific positions in the circumferential direction at both fitting connection portions of the pipe joint ring 2 facing each other in the pipe radial direction. Circular engagement holes 19 and 20 that are an example are formed in a state of opening inward in the pipe radial direction, and a cylindrical shape that is an example of an engagement member over the engagement holes 19 and 20 that communicate with each other in the pipe radial direction. The engagement pins 21 are inserted along the tube radial direction from the inside of the tube and held at a predetermined engagement position, so that both the tube portions 1 and 2 are connected to the tube axis at the portion sealed by the inner band 5. It is configured to be fixedly connected while preventing relative movement in the X direction. .

そして、地震や不同沈下等に起因して管継手部に引張力が作用したとき、この引張力を、前記内面バンド５で密封される部位において前記両流体管Ｐの接続管部１と管継ぎ輪２とを管軸芯Ｘ方向での相対移動を阻止する状態で固定連結する固定連結手段Ｃの複数の係合ピン２１によっても受止めることができるから、前記係合ピン２１が剪断又は変形して外れない限り、両管部１，２が接続維持範囲を越えて離脱移動することを強力に阻止することができる。   When a tensile force is applied to the pipe joint due to an earthquake, uneven settlement, or the like, this tensile force is connected to the connecting pipe portion 1 of the two fluid pipes P at the portion sealed by the inner band 5. Since the ring 2 can also be received by the plurality of engagement pins 21 of the fixed connection means C for fixedly connecting the ring 2 in a state of preventing relative movement in the tube axis X direction, the engagement pin 21 is sheared or deformed. As long as it does not come off, it is possible to strongly prevent the pipe parts 1 and 2 from moving apart beyond the connection maintaining range.

さらに、前記抜け出し抑制手段Ｅを構成するに、図９、図１０に示すように、略円柱状の各係合ピン２１の外周面のうち、管内に臨む管径方向内端面を除く部位に、前記両係合孔１９，２０の内周面との間に微小な摩擦力が働く弾性圧縮状態で挿入可能な厚みで係合ピン２１の外周面を被覆処理する弾性被覆層の一例である防蝕ゴム層を構成する有底筒状の防蝕ゴム筒体２２が固着されているとともに、前記防蝕ゴム筒体２２の管径方向中間部位には、前記両流体管Ｐの接続管部１の係合孔１９に対して弾性復元力に抗して縮径変形させた収縮状態（縮径状態）で通過可能で、且つ、通過後に前記両流体管Ｐの接続管部１の外周面１ａと管継ぎ輪２の内周面２ａとの対向面間に形成されている環状空間Ｓにおいて弾性復元力で拡径変形して、接続管部１の外周面１ａにおける係合孔１９の開口周縁に拡張状態で抜止め係止可能な鍔状（円環状）の係止部２２Ａが外方に一体的に張り出し形成されている。   Further, in order to configure the escape prevention means E, as shown in FIG. 9 and FIG. 10, in the outer peripheral surface of each of the substantially cylindrical engaging pins 21, the portion excluding the inner end surface in the radial direction facing the tube, The anticorrosion is an example of an elastic coating layer that coats the outer peripheral surface of the engagement pin 21 with a thickness that can be inserted in an elastic compression state in which a minute frictional force acts between the inner peripheral surfaces of the engagement holes 19 and 20. The bottomed cylindrical anticorrosion rubber cylinder 22 constituting the rubber layer is fixed, and the connection pipe portions 1 of the two fluid pipes P are engaged at the intermediate portion in the pipe radial direction of the anticorrosion rubber cylinder 22. It is possible to pass through the hole 19 in a contracted state (a contracted state) in which the diameter of the hole 19 is reduced against the elastic restoring force, and after the passage, the outer peripheral surface 1a of the connecting pipe portion 1 of the both fluid pipes P and the pipe joint In the annular space S formed between the opposing surfaces of the ring 2 and the inner peripheral surface 2a, the diameter is deformed by elastic restoring force, Locking portion 22A is formed projecting integrally with the outside of the connection tube portion retaining lockable flanged at one of the outer peripheral surface 1a in an expanded state the opening peripheral edge of the engagement hole 19 (annular).

そして、前記両流体管Ｐの接続管部１の周方向複数箇所に形成された係合孔１９と管継ぎ輪２の両嵌合接続部位の周方向複数箇所に形成された係合孔２０とにわたって係合ピン２１を挿入したとき、該係合ピン２１に被覆処理された防蝕ゴム筒体２２の圧縮によって前記両係合孔１９，２０の内周面との間で発生する摩擦抵抗と、前記両接続管部１の外周面１ａと管継ぎ輪２の内周面２ａとの間に存在する環状空間Ｓを利用して弾性復元力で拡張された係止部２２Ａが接続管部１の外周面１ａにおける係合孔１９の開口周縁に係止することによる係止作用とにより、挿入装着された前記係合ピン２１の管径方向内方への抜け出し移動を効果的に防止することができる。   And the engagement hole 19 formed in the circumferential direction several places of the connection pipe part 1 of both the fluid pipes P, and the engagement hole 20 formed in the circumferential direction several places of both fitting connection parts of the pipe joint ring 2; A frictional resistance generated between the inner peripheral surfaces of the engagement holes 19 and 20 by compression of the corrosion-resistant rubber cylinder 22 covered with the engagement pin 21 when the engagement pin 21 is inserted over the engagement pin 21; A locking portion 22 </ b> A expanded by an elastic restoring force using an annular space S existing between the outer peripheral surface 1 a of both the connecting pipe portions 1 and the inner peripheral surface 2 a of the pipe joint ring 2 is connected to the connecting pipe portion 1. By the locking action by locking to the opening peripheral edge of the engagement hole 19 in the outer peripheral surface 1a, it is possible to effectively prevent the engagement pin 21 that has been inserted and attached from slipping out inward in the tube radial direction. it can.

この第１参考例では、前記抜け出し抑制手段Ｅを、係合ピン２１に被覆処理された防蝕ゴム筒体２２と前記両係合孔１９，２０の内周面との間で発生する摩擦抵抗と、前記防蝕ゴム筒体２２に一体形成されている係止部２２Ａが接続管部１の外周面１ａにおける係合孔１９の開口周縁に係止することによる係止作用とから構成したが、前記係止部２２Ａによる係止作用だけで構成してもよい。 In the first reference example , the slip-out suppressing means E is a frictional resistance generated between the corrosion-resistant rubber cylinder 22 covered with the engagement pin 21 and the inner peripheral surfaces of the engagement holes 19 and 20. The locking portion 22A formed integrally with the anticorrosion rubber cylinder 22 is configured by a locking action by locking to the opening peripheral edge of the engaging hole 19 in the outer peripheral surface 1a of the connecting pipe portion 1. You may comprise only the latching effect | action by the latching | locking part 22A.

前記穿孔装置は、図１１〜図１５に示すように、前記流体管Ｐの接続管部１の管内壁の円周方向における任意の位置に対して管径方向から突っ張り状態で固定保持並びに固定解除操作自在な突っ張り固定手段Ｆに、前記流体管Ｐの管軸芯Ｘ又は略管軸芯周りで相対回転可能な回転機枠３０と、該回転機枠３０を強制回転させる強制回転手段Ｇを設けるとともに、前記回転機枠３０には、前記接続管部１と管継ぎ輪２とにわたって管径方向内方側から前記両係合孔１９，２０を形成可能な回転穿孔手段Ｈと、該回転穿孔手段Ｈを管径方向に移動させる径方向送込み手段Ｊと、前記回転穿孔手段Ｈを接続管部１の管軸芯Ｘ又は略管軸芯Ｘ周りで円周方向に沿って移動させる周方向送込み手段Ｋと、前記回転機枠３０を接続管部１の管内壁に沿って円周方向に回動案内する回動案内手段Ｌが設けられている。   As shown in FIGS. 11 to 15, the perforating apparatus is fixedly held and released in a stretched state from the pipe radial direction with respect to an arbitrary position in the circumferential direction of the pipe inner wall of the connecting pipe portion 1 of the fluid pipe P. The freely operable stretch fixing means F is provided with a rotating machine frame 30 that can be relatively rotated around the tube axis X of the fluid pipe P or substantially around the tube axis, and a forced rotating means G that forcibly rotates the rotating machine frame 30. In addition, the rotary machine frame 30 includes a rotary punching means H capable of forming the engagement holes 19 and 20 from the inner side in the pipe radial direction across the connection pipe portion 1 and the pipe joint ring 2, and the rotary drilling. A radial feed means J for moving the means H in the pipe radial direction, and a circumferential direction for moving the rotary punching means H along the circumferential direction around the tube axis X of the connecting pipe portion 1 or substantially the tube axis X The feeding means K and the rotating machine frame 30 are arranged along the inner wall of the connecting pipe portion 1. Rotation guide means L for rotation guiding in the circumferential direction is provided.

前記突っ張り固定手段Ｆは、図１２、図１３に示すように、回転穿孔手段Ｈの回転穿孔具３１として選択的に装着される穿孔ドリル又はエンドミルの回転中心線と平行に配設される一対の第１支柱軸３２Ａの中間部に横桟部材３２Ｂを架設して、略Ｈ字状の保持枠体３２を枠組み構成し、この保持枠体３２の両第１支柱軸３２Ａの一端部には、管壁面に対して管径方向に沿う方向から当接する円柱状の当接部材３３を設けるとともに、前記両第１支柱軸３２Ａの他端部に形成されたネジ軸３２ａには、これのネジ軸芯方向に移動自在な略Ｔ字状の押圧部材３４と、該押圧部材３４を接続管部１の管内壁に向かって管径方向外方に押し出し移動させるナット３５を装着して構成されている。   As shown in FIGS. 12 and 13, the tension fixing means F is a pair of drill drills or end mills that are selectively mounted as the rotary drilling tool 31 of the rotary drilling means H and arranged in parallel with the rotation center line. A horizontal beam member 32B is installed at the intermediate portion of the first support shaft 32A to form a substantially H-shaped holding frame 32, and at one end of both the first support shafts 32A of the holding frame 32, A cylindrical abutting member 33 that abuts against the tube wall surface from the direction along the tube diameter direction is provided, and the screw shaft 32a formed at the other end of both the first support shafts 32A has a screw shaft thereof. A substantially T-shaped pressing member 34 that is movable in the core direction and a nut 35 that pushes and moves the pressing member 34 outward in the pipe radial direction toward the inner wall of the connecting pipe portion 1 are configured. .

前記両当接部材３３の管軸芯方向両端面のうち、管軸芯方向で同じ側に位置する端面にわたって第１補強板３６が固定連結されているとともに、前記両押圧部材３４も同様に、管軸芯方向で同じ側に位置する端面にわたって第２補強板３７が固定連結されている。   The first reinforcing plate 36 is fixedly connected across the end surfaces located on the same side in the tube axis direction among both end surfaces of the both contact members 33 in the tube axis direction. A second reinforcing plate 37 is fixedly connected across the end face located on the same side in the tube axis direction.

前記回転機枠３０は、回転穿孔具３１の回転中心線と平行に配設される一対の第２支柱軸３０Ａの長手方向二箇所に横桟部材３０Ｂを架設して枠組み構成されているとともに、前記突っ張り固定手段Ｆの横桟部材３２Ｂに対して管軸芯Ｘ又は略管軸芯周りで回転自在に枢支連結されている。   The rotating machine frame 30 has a frame structure in which a cross beam member 30B is installed at two longitudinal positions of a pair of second support shafts 30A arranged in parallel with the rotation center line of the rotary punch 31, It is pivotally connected to the horizontal beam member 32B of the tension fixing means F so as to be rotatable around the tube axis X or substantially the tube axis.

前記強制回転手段Ｇは、前記突っ張り固定手段Ｆに相対回転自在に支持されている前記回転機枠３０の回転軸部に連動された減速ギア機構４０とこれに連動された駆動源の一例である第１電動モータ４１から構成されているとともに、この第１電動モータ４１と減速ギア機構４０をもって、前記回転穿孔手段Ｈを接続管部１の管軸芯Ｘ又は略管軸芯Ｘ周りで円周方向に沿って移動させる前記周方向送込み手段Ｋが兼用構成されている。   The forced rotation means G is an example of a reduction gear mechanism 40 that is linked to the rotation shaft portion of the rotating machine frame 30 that is rotatably supported by the tension fixing means F, and a drive source that is linked to this. The first electric motor 41 and the first electric motor 41 and the reduction gear mechanism 40 are used to rotate the rotary punching means H around the tube axis X or substantially the tube axis X of the connecting pipe portion 1. The circumferential feeding means K that moves along the direction is also used as a configuration.

前記回転穿孔手段Ｈは、図１４、図１５に示すように、前記回転機枠３０の両横桟部材３０Ｂのうち、穿孔中心線Ｙに対してそれと直交する方向に等間隔をおいて穿孔中心線Ｙと平行な方向で相対向する部位に架設された一対の摺動ガイド軸４３に、駆動源の一例である第２電動モータ４４から回転穿孔具３１への動力伝達系の減速機構を内装する減速ケース４５を摺動自在に取付けるとともに、前記減速ケース４５の軸受け部４６と管内壁側に位置する横桟部材３０Ｂに設けた軸受け部４７とにわたって、前記回転穿孔具３１を付け替え可能に取付けるためのチャック部４８を備えた駆動回転軸４９が、前記減速ケース４５と一体的に移動する状態で回転自在に支承されている。   As shown in FIGS. 14 and 15, the rotary punching means H has a punching center at equal intervals in a direction perpendicular to the punching center line Y, of both horizontal beam members 30 </ b> B of the rotating machine frame 30. A pair of sliding guide shafts 43 installed in opposite positions in a direction parallel to the line Y is provided with a power transmission system speed reduction mechanism from the second electric motor 44 to the rotary punch 31 as an example of a drive source. The speed reduction case 45 is slidably attached, and the rotary punch 31 is attached so as to be replaceable between the bearing portion 46 of the speed reduction case 45 and the bearing portion 47 provided on the crosspiece member 30B located on the inner wall side of the pipe. A driving rotary shaft 49 having a chuck portion 48 is rotatably supported so as to move integrally with the deceleration case 45.

前記径方向送込み手段Ｊは、図１４、図１５に示すように、前記駆動回転軸４９の他端部に形成した凹部４９Ａに、該駆動回転軸４９の軸芯周りで相対回転のみ自在なネジ駒５０を内嵌保持するとともに、前記管軸芯Ｘ側に位置する横桟部材３０Ｂには、前記ネジ駒５０に螺合する送り操作軸５１が回転のみ自在に支承され、この送り操作軸５１の他端部には、これとネジ駒５０との相対回転によって駆動回転軸４９に送り力又は戻り力を付与するための減速機構５２付の第３電動モータ５３が設けられている。   As shown in FIGS. 14 and 15, the radial feeding means J is only allowed to rotate relative to the recess 49 </ b> A formed at the other end of the drive rotation shaft 49 around the axis of the drive rotation shaft 49. A feed operation shaft 51 that is screwed into the screw piece 50 is rotatably supported on the crosspiece member 30B positioned on the tube axis X side while the screw piece 50 is internally fitted and held. A third electric motor 53 with a speed reduction mechanism 52 is provided at the other end of 51 to apply a feed force or a return force to the drive rotating shaft 49 by relative rotation between the screw piece 50 and the screw piece 50.

また、前記周方向送込み手段Ｋが兼用構成されている強制回転手段Ｇの第１電動モータ４１、前記回転穿孔手段Ｈの第２電動モータ４４、径方向送込み手段Ｊの第３電動モータ５３を駆動制御する制御部５４において、前記接続管部１と管継ぎ輪２に対する穿孔位置データ、径方向の送り込みデータ、周方向の送込みデータ等の穿孔作業データを入力することにより、前記接続管部１と管継ぎ輪２に対して管径方向内方側から設定深さ、設定形状の両係合孔１９，２０を形成することができる。   In addition, the first electric motor 41 of the forced rotation means G, the second electric motor 44 of the rotary punching means H, and the third electric motor 53 of the radial direction feeding means J, which are also configured to serve as the circumferential direction feeding means K, are used. In the control unit 54 for controlling the driving of the connecting pipe, by inputting drilling data such as drilling position data, radial feed data, and circumferential feed data for the connection pipe part 1 and the pipe joint 2, the connection pipe Both engagement holes 19 and 20 having a set depth and a set shape can be formed from the inner side in the pipe radial direction with respect to the portion 1 and the pipe joint ring 2.

前記穿孔作業データにおける周方向の送込みデータが零設定の場合には、前記両係合孔１９，２０が穿孔軸芯方向視において真円形状となり、また、周方向の送込みデータが設定送込み数値に設定されている場合には、前記両係合孔１９，２０が穿孔軸芯方向視において長孔形状になる。
前者の場合は、前記回転穿孔具３１として穿孔ドリルを使用し、後者の場合は、前記回転穿孔具３１としてエンドミルを使用する。 When the circumferential feed data in the drilling operation data is set to zero, the engagement holes 19 and 20 have a perfect circle shape when viewed from the drill axis direction, and the circumferential feed data is set and sent. In the case where the numerical value is set to a rounded numerical value, both the engagement holes 19 and 20 have a long hole shape when viewed in the drilling axis direction.
In the former case, a drilling drill is used as the rotary punch 31, and in the latter case, an end mill is used as the rotary punch 31.

前記回動案内手段Ｌは図１１〜図１３に示すように、前記回転機枠３０の両第２支柱軸３０Ａの一端部に、管壁面に対して管径方向に沿う方向から当接する回転自在な転輪５５を備えた支持体５６を設けるとともに、前記両第２支柱軸３０Ａの他端部に形成されたネジ軸３０ａには、これのネジ軸芯方向に移動自在で、且つ、管壁面に対して管径方向に沿う方向から当接する回転自在な転輪５７を備えた押圧体５８と、該押圧体５８を接続管部１の管内壁に向かって管径方向外方に押し出し移動させるナット５９を装着して構成されている。   As shown in FIGS. 11 to 13, the rotation guide means L is rotatable to abut one end of both the second support shafts 30 </ b> A of the rotating machine frame 30 from the direction along the tube radial direction with respect to the tube wall surface. A support 56 provided with a rotating wheel 55 is provided, and the screw shaft 30a formed at the other end of each of the two second support shafts 30A is movable in the direction of the screw shaft core and has a tube wall surface. A pressing body 58 having a rotatable roller wheel 57 that comes into contact with the pipe in the radial direction, and pushes the pressing body 58 outward in the radial direction toward the inner wall of the connecting pipe portion 1. A nut 59 is attached.

この第１参考例では、図１、図３に示すように、前記両流体管Ｐの接続管部１が、それらの端面間に間隙が発生している状態で管継ぎ輪２にて接続された場合を例示したため、前記管継ぎ輪２の内周面２aと両接続管部１の端面とで形成される環状凹部６０内に、両接続管部１の内周面１ｂと同径の内周面６１ａ及び管継ぎ輪２の内周面２aと同径の外周面６１ｂを備えた円環状のゴム製のスペーサー６１が装着されている。
尚、前記両流体管Ｐの接続管部１の端面同士が管軸芯Ｘ方向から当接している又は近接している場合には、前記スペーサー６１を設ける必要はない。 In the first reference example , as shown in FIGS. 1 and 3, the connecting pipe portions 1 of the two fluid pipes P are connected by the pipe joint 2 with a gap between their end faces. In the annular recess 60 formed by the inner peripheral surface 2a of the pipe joint ring 2 and the end surfaces of both connecting pipe portions 1, the inner diameter of the inner peripheral surface 1b of both connecting pipe portions 1 is the same. An annular rubber spacer 61 having an outer peripheral surface 61b having the same diameter as the peripheral surface 61a and the inner peripheral surface 2a of the pipe joint ring 2 is mounted.
When the end surfaces of the connecting pipe portions 1 of both the fluid pipes P are in contact with or close to each other from the tube axis X direction, the spacer 61 need not be provided.

また、上述の第１参考例では、前記各係合ピン２１の外周面のうち、管内に臨む管径方向内端面を除く部位を弾性被覆層の一例である防蝕ゴム層で被覆処理したが、前記各係合ピン２１の外周面全域を弾性被覆層の一例である防蝕ゴム層で被覆処理してもよい。 Further, in the first reference example described above, a portion of the outer peripheral surface of each engagement pin 21 excluding the inner end surface in the radial direction facing the tube is coated with a corrosion-resistant rubber layer that is an example of an elastic coating layer. The entire outer peripheral surface of each engagement pin 21 may be coated with a corrosion-resistant rubber layer that is an example of an elastic coating layer.

〔第２参考例〕
上述の第１参考例では、前記両流体管Ｐの接続管部１の外周面１ａと管継ぎ輪２の内周面２ａとの対向面間に介装された前記両シール部材３及び鉛４をもって、前記両流体管Ｐの接続管部１の外周面１ａと管継ぎ輪２の内周面２ａとの対向面間を密封する密封手段Ａを構成したが、図１６に示すように、前記密封手段Ａを構成するに、前記管継ぎ輪２の両端部の連結フランジ部２Ａの周方向複数箇所に形成されたボルト挿通孔２ｃ、及び、押輪６の連結フランジ部６Ａの周方向複数箇所に形成されたボルト挿通孔６ａのうち、管軸芯Ｘ方向で相対向するボルト挿通孔２ｃ，６ａにわたって挿入されるＴ字状のボルト８Ａと、該ボルト８Ａの突出ネジ部に螺合されるナット８Ｂを設け、このボルト８Ａ・ナット８Ｂの締付け操作に伴う押輪６と管継ぎ輪２の連結フランジ部２Ａとの管軸芯Ｘ方向での相対近接移動により、押輪６の管軸芯Ｘ方向の一端部に形成されたシール押圧部６ｂでシール材であるパッキン９を圧縮変形させ、接続管部１の外周面１ａと管継ぎ輪２の内周面２ａとの対向面間を密封すると同時に、このパッキン９の圧縮に伴う圧接力によって接続管部１と管継ぎ輪２とを嵌合接続状態で抜止め保持するように構成してもよい。 [Second Reference Example ]
In the first reference example described above, both the seal members 3 and the lead 4 interposed between the opposing surfaces of the outer peripheral surface 1a of the connecting pipe portion 1 of the both fluid pipes P and the inner peripheral surface 2a of the pipe joint ring 2. The sealing means A that seals between the opposed surfaces of the outer peripheral surface 1a of the connecting pipe portion 1 of both the fluid pipes P and the inner peripheral surface 2a of the pipe joint ring 2 is configured as shown in FIG. In order to constitute the sealing means A, bolt insertion holes 2c formed at a plurality of circumferential positions of the connecting flange portion 2A at both ends of the pipe joint ring 2 and a plurality of circumferential directions of the connecting flange portion 6A of the press ring 6 are provided. Of the formed bolt insertion hole 6a, a T-shaped bolt 8A inserted across the bolt insertion holes 2c, 6a facing each other in the tube axis X direction, and a nut screwed into the protruding screw portion of the bolt 8A 8B is provided, and the presser wheel 6 accompanying the tightening operation of the bolt 8A and nut 8B Packing 9 as a seal material is compressed by a seal pressing portion 6b formed at one end portion of the push ring 6 in the tube axis X direction by relative proximity movement in the tube axis X direction with the connecting flange portion 2A of the joint ring 2. The connecting pipe part 1 and the pipe ring 2 are deformed by sealing the space between the outer peripheral face 1a of the connecting pipe part 1 and the inner peripheral face 2a of the pipe joint ring 2 and at the same time by the pressure contact force accompanying the compression of the packing 9. And may be configured to be retained in a fitted and connected state.

この第２参考例で用いられる前記固定連結手段Ｃ及び前記抜け出し抑制手段Ｅは、第１参考例と同一であり、前記両流体管Ｐの接続管部１の周方向複数箇所に形成された係合孔１９と管継ぎ輪２の両嵌合接続部位の周方向複数箇所に形成された係合孔２０とにわたって係合ピン２１を挿入したとき、該係合ピン２１に被覆処理された防蝕ゴム筒体２２の圧縮によって前記両係合孔１９，２０の内周面との間で発生する摩擦抵抗と、前記両接続管部１の外周面１ａと管継ぎ輪２の内周面２ａとの間に存在する環状空間Ｓを利用して弾性復元力で拡張された係止部２２Ａが接続管部１の外周面１ａにおける係合孔１９の開口周縁に係止することによる係止作用とにより、挿入装着された前記係合ピン２１の管径方向内方への抜け出し移動を効果的に防止することができる。 The said fixing coupling means C and said exit suppression means E is used in the second reference example is the same as the first reference example, the formed plurality of circumferential locations of the connecting tube portion 1 of the two fluid tubes P engaged When the engagement pin 21 is inserted across the engagement hole 19 and the engagement holes 20 formed at a plurality of positions in the circumferential direction of both fitting connection portions of the pipe joint 2, the corrosion-resistant rubber coated on the engagement pin 21. Friction resistance generated between the inner peripheral surfaces of the engagement holes 19 and 20 due to the compression of the cylindrical body 22, and the outer peripheral surface 1 a of both the connecting pipe portions 1 and the inner peripheral surface 2 a of the pipe joint ring 2. The locking portion 22 </ b> A expanded by the elastic restoring force using the annular space S existing between the locking space 22 </ b> A is locked to the opening peripheral edge of the engagement hole 19 in the outer peripheral surface 1 a of the connection pipe portion 1. Effective movement of the inserted engagement pin 21 inwardly in the tube radial direction It is possible to prevent.

また、前記接続管部１の外周面１ａにおける係合孔１９の開口周縁の近傍に、環状空間Ｓでの係止部２２Ａの弾性復元力による拡張を阻害するものが存在しない場合には、前記係止部２２Ａの全周が係合孔１９の開口周縁に係止することになる。
尚、その他の構成は、第１参考例で説明した構成と同一であるから、同一の構成箇所には、第１参考例と同一の番号を付記してそれの説明は省略する。 Further, when there is no object that hinders expansion by the elastic restoring force of the locking portion 22A in the annular space S in the vicinity of the opening peripheral edge of the engagement hole 19 on the outer peripheral surface 1a of the connection pipe portion 1, The entire circumference of the locking portion 22 </ b> A is locked to the opening periphery of the engagement hole 19.
The other aspects of the configuration because it is identical to that described in the first reference example, the same configuration portions and that of described given the same number and the first reference example will be omitted.

〔第３参考例〕
上述の第１参考例及び第２参考例では、流路を構成する状態で嵌合接続される両筒部のうち、前記小径側筒部を、流路方向に沿って隣接配置される両管部の一例である両流体管Ｐの接続管部１から構成し、前記大径側筒部を、前記両接続管部１に密封状態で外嵌接続される管継ぎ輪２から構成したが、図１７、図１８に示すように、前記小径側筒部を、流路方向に沿って配置される挿口管部２４から構成し、前記大径側筒部を、前記挿口管部２４に対して密封状態で外嵌接続される受口管部２５から構成してもよい。 [Third reference example ]
In the first reference example and the second reference example described above, of the two cylindrical parts that are fitted and connected in a state of constituting the flow path, the small diameter side cylindrical part is adjacently disposed along the flow path direction. It is composed of a connecting pipe portion 1 of both fluid pipes P, which is an example of the portion, and the large-diameter side cylindrical portion is composed of a pipe joint 2 that is externally connected to both the connecting pipe portions 1 in a sealed state. As shown in FIGS. 17 and 18, the small-diameter side tubular portion is constituted by an insertion tube portion 24 arranged along the flow path direction, and the large-diameter side tubular portion is formed in the insertion tube portion 24. On the other hand, you may comprise from the receiving pipe part 25 externally connected by sealing.

前記受口管部２５の連結フランジ部２５Ａの周方向複数箇所に形成されたボルト挿通孔及び、押輪２７の連結フランジ部２７Ａの周方向複数箇所に形成されたボルト挿通孔のうち、管軸芯Ｘ方向で相対向するボルト挿通孔にわたって挿入されるＴ字状のボルト２８Ａと、該ボルト２８Ａの突出ネジ部に螺合されるナット２８Ｂを設けて、前記ボルト２８Ａ・ナット２８Ｂの締付け操作に伴う押輪２７と受口管部２５との管軸芯Ｘ方向での相対近接移動により、押輪２７の管軸芯Ｘ方向の一端部に形成されたシール押圧部２７ａでシール材２９を圧縮変形させ、挿口管部２４の外周面２４ａと受口管部２５の内周面２５ａとの対向面間を密封すると同時に、このシール材２９の圧縮に伴う圧接力によって受口管部２４と挿口管部２５とを接続状態で抜止め保持している。   Of the bolt insertion holes formed at a plurality of circumferential positions of the connection flange portion 25A of the receiving pipe portion 25 and the bolt insertion holes formed at a plurality of circumferential positions of the connection flange portion 27A of the push ring 27, a tube axis A T-shaped bolt 28A to be inserted over the bolt insertion holes facing each other in the X direction and a nut 28B to be screwed into the protruding screw portion of the bolt 28A are provided, and the bolt 28A and the nut 28B are tightened. The seal member 29 is compressed and deformed by the seal pressing portion 27a formed at one end portion of the push ring 27 in the tube axis X direction by the relative proximity movement of the push ring 27 and the receiving tube portion 25 in the tube axis X direction. At the same time as sealing between the opposed surfaces of the outer peripheral surface 24a of the insertion tube portion 24 and the inner peripheral surface 25a of the reception tube portion 25, the reception tube portion 24 and the insertion tube are brought about by the pressure contact force accompanying the compression of the sealing material 29. Connecting part 25 In holding the retainer.

また、この第３参考例では、前記挿口管部２４及び受口管部２５に対して管径方向内方側から形成される前記両係合孔１９，２０が、穿孔軸芯方向視（周方向断面視）において長孔形状に形成され、前記両係合孔１９，２０にわたって係合される前記係合部材が長円柱状の係合ピース２６に構成されている。 In the third reference example , the engagement holes 19 and 20 formed from the radially inner side with respect to the insertion tube portion 24 and the receiving tube portion 25 are viewed in the direction of the drilling axis ( The engagement member that is formed in a long hole shape and is engaged over the engagement holes 19 and 20 in the circumferential cross-sectional view) is configured as a long columnar engagement piece 26.

前記挿口管部２４側の長円貫通孔形状の係合孔１９及び前記受口管部２５側の長円溝形状の係合孔２０の各々は、前記回転穿孔手段Ｈの回転穿孔具３１が管軸芯Ｘ又は略管軸芯周りで円周方向に沿って送られるため、管径方向内方側への開口位置における横断面積よりも管径方向外方側ほど内部横断面積が次第に大となる。換言すれば、前記長円貫通孔形状の係合孔１９及び長円溝形状の係合孔２０は、それの周方向長さが開口位置よりも管径方向外方側ほど大となるテーパー状に形成されることになり、当該両係合孔１９，２０における円周方向両端のテーパー状端面１９ａ，２０ａとこれらにわたって係合された係合ピース２６の円周方向両端面２６ａとの対向面間に、径方向外方側ほど円周方向幅が大となる管軸芯Ｘ方向視において三角形状の係止空間（内部空間）が形成されている。   Each of the engagement hole 19 in the shape of an oval through hole on the side of the insertion tube portion 24 and the engagement hole 20 in the shape of an oval groove on the side of the reception tube portion 25 are respectively connected to the rotary punch 31 of the rotary punching means H. Is sent along the circumferential direction around the tube axis X or approximately the tube axis, so that the inner cross-sectional area gradually increases toward the outer side in the tube radial direction than the cross-sectional area at the opening position toward the inner side in the tube radial direction. It becomes. In other words, the oval through hole-shaped engagement hole 19 and the oval groove-shaped engagement hole 20 have a tapered shape in which the circumferential length thereof becomes larger toward the outer side in the tube radial direction than the opening position. The opposite end surfaces of the engagement holes 19 and 20 are opposed to the tapered end surfaces 19a and 20a at both ends in the circumferential direction and both end surfaces 26a in the circumferential direction of the engagement piece 26 engaged therewith. A triangular locking space (internal space) is formed in the middle as viewed from the tube axis X direction in which the circumferential width increases toward the radially outer side.

前記両係合孔１９，２０における円周方向両端のテーパー状端面１９ａ，２０ａと係合ピース２６の円周方向両端面との対向面間にて三角形状の係止空間が形成されるが、前記挿口管部２４側の係合孔１９における係止空間の形成領域が小さいため、実質的に係止機能が有効に働くのは受口管部２５側の係合孔２０における係止空間となる。   A triangular locking space is formed between the opposing faces of the tapered end faces 19a, 20a at both ends in the circumferential direction of the engagement holes 19, 20 and both end faces in the circumferential direction of the engagement piece 26. Since the engagement space 19 is formed in a small area in the engagement hole 19 on the insertion tube portion 24 side, the engagement function substantially works effectively in the engagement space in the engagement hole 20 on the reception tube portion 25 side. It becomes.

そのため、当該参考例においては、前記挿口管部２４に形成された長円形状の係合孔１９と前記受口管部２５に形成された長円溝形状の係合孔２０とにわたって挿入装着された前記係合ピース２６の管径方向内方への抜け出し移動に抵抗を付与する抜け出し抑制手段Ｅを構成するに、前記係合ピース２６の外周面全域に、前記両係合孔１９，２０の内周面との間に微小な摩擦力が働く弾性圧縮状態で挿入可能な厚みで弾性被覆層の一例である防蝕ゴム層２２が被覆処理されている。 Therefore, in the reference example , the insertion mounting is performed over the oval engagement hole 19 formed in the insertion tube portion 24 and the oval groove engagement hole 20 formed in the reception tube portion 25. In order to constitute a slip-out suppressing means E that provides resistance to the slip-out movement of the engagement piece 26 inward in the tube diameter direction, the engagement holes 19 and 20 are formed in the entire outer peripheral surface of the engagement piece 26. The anticorrosion rubber layer 22, which is an example of an elastic coating layer, is coated with a thickness that can be inserted in an elastically compressed state in which a minute frictional force acts between the inner circumferential surface and the inner circumferential surface.

前記防蝕ゴム層２２の円周方向両端部には、挿口管部２４の係合孔１９及び受口管部２５の係合孔２０における開口に対して収縮状態（縮径状態）で通過可能で、かつ、開口通過後に両係合孔１９，２０内の係止空間に拡張状態で係止可能な縦断面三角形状の厚肉部分が一体形成され、この三角形状厚肉部分のうち、受口管部２５の係合孔２０に対応する管径方向外方側部位が実質的に係合孔２０内の係止空間に拡張状態で係止可能な第１係止部２２Ｂに構成されているとともに、前記防蝕ゴム層２２の管径方向中間部位には、挿口管部２４の係合孔１９に対して弾性復元力に抗して縮径変形させた収縮状態（縮径状態）で通過可能で、且つ、通過後に前記挿口管部２４の外周面２４ａと受口管部２５の内周面２５ａとの対向面間に形成されている環状空間Ｓにおいて弾性復元力で拡径変形して、挿口管部２４の外周面２４ａにおける係合孔１９の開口周縁に拡張状態で抜止め係止可能な鍔状（円環状）の第２係止部２２Ｃが外方に一体的に突出形成されている。   Both ends of the corrosion-resistant rubber layer 22 in the circumferential direction can pass in a contracted state (a reduced diameter state) with respect to the openings in the engagement hole 19 of the insertion tube portion 24 and the engagement hole 20 of the reception tube portion 25. In addition, a thick-walled portion having a triangular cross-section that can be locked in an expanded state is integrally formed in the locking space in both the engagement holes 19 and 20 after passing through the opening. The tube radial direction outer side part corresponding to the engagement hole 20 of the mouth pipe part 25 is comprised by the 1st latching | locking part 22B which can be latched in the latching space in the engagement hole 20 in an expanded state. In addition, the intermediate portion of the anticorrosion rubber layer 22 in the tube diameter direction is in a contracted state (diameter-reduced state) in which the engagement hole 19 of the insertion tube portion 24 is deformed and deformed against an elastic restoring force. It is formed between the opposed surfaces of the outer peripheral surface 24a of the insertion tube portion 24 and the inner peripheral surface 25a of the receiving tube portion 25 after passing. The ring-shaped space S is deformed and expanded by elastic restoring force, and has a hook-like (annular) shape that can be retained and locked in the expanded state at the opening periphery of the engagement hole 19 in the outer peripheral surface 24a of the insertion tube portion 24. Two locking portions 22C are integrally formed protruding outward.

前記挿口管部２４側の長円貫通孔形状の係合孔１９及び前記受口管部２５側の長円溝形状の係合孔２０に対して管径方向内方側から係合ピース２６を挿入装着する際、当該係合ピース２６に被覆処理された防蝕ゴム層２２のうち、管径方向外方側部位に形成されている第１係止部２２Ｂを、挿口管部２４の係合孔１９及び受口管部２５の係合孔２０における開口に対して収縮状態で通過させたのち、開口位置よりも拡大形成されている受口管部２５の係合孔２０の係止空間において拡張させることにより、第１係止部２２Ｂを受口管部２５の係合孔２０の内部に係止させることができる。   An engagement piece 26 is formed from the inner side in the tube radial direction with respect to the engagement hole 19 in the shape of an oblong through hole on the insertion tube portion 24 side and the engagement hole 20 in the shape of an oval groove on the reception tube portion 25 side. Of the anticorrosion rubber layer 22 coated on the engagement piece 26, the first locking portion 22B formed on the outer side in the tube radial direction is engaged with the insertion tube portion 24. The engagement space of the engagement hole 20 of the receiving pipe portion 25 that is formed to be larger than the opening position after passing through the contraction state with respect to the opening in the engagement hole 20 of the joint hole 19 and the receiving pipe portion 25. The first locking portion 22 </ b> B can be locked inside the engagement hole 20 of the receiving tube portion 25 by being expanded in FIG.

さらに、前記防蝕ゴム層２２の管径方向中間部位に設けられている第２係止部２２Ｃを収縮状態で挿口管部２４の係合孔１９を通過させたのち、前記挿口管部２４の外周面２４ａと受口管部２５の内周面２５ａとの間に存在する環状空間Ｓを利用して拡張させることにより、第２係止部２２Ｃを挿口管部２４の外周面２４ａにおける係合孔１９に係止させることができる。   Furthermore, after passing the engagement hole 19 of the insertion tube portion 24 in a contracted state, the insertion tube portion 24 is passed through the second locking portion 22C provided at the intermediate portion in the tube diameter direction of the anticorrosion rubber layer 22. The second locking portion 22C is formed on the outer peripheral surface 24a of the inlet tube portion 24 by expanding the annular space S existing between the outer peripheral surface 24a of the inlet tube portion 25 and the inner peripheral surface 25a of the inlet tube portion 25. The engagement hole 19 can be locked.

それ故に、前記係合ピース２６に被覆処理された防蝕ゴム層２２の二箇所に設けた両係止部２２Ｂ，２２Ｃによって離脱防止機能を維持するための抜け出し阻止機能を高めながらも、この係合ピース２６を両係合孔１９，２０に挿入操作するだけで済み、装着操作の簡便化を促進することができる。   For this reason, the engagement piece 26 is provided with two engagement portions 22B and 22C provided at two locations on the anticorrosion rubber layer 22 coated on the engagement piece 26. It is only necessary to insert the piece 26 into both the engagement holes 19 and 20, and the mounting operation can be simplified.

また、この第３参考例では、前記内面バンド５の内周面における管軸芯Ｘ方向の３箇所には環状リブ５Ｄが一体形成され、この環状リブ５Ｄの隣接間に形成される二つの環状溝５Ｅが、前記圧着手段Ｂを構成する二つの圧着具に対する装着用環状溝に構成されている。 In the third reference example , annular ribs 5D are integrally formed at three locations in the tube axis X direction on the inner circumferential surface of the inner surface band 5, and two annular ribs formed between the adjacent annular ribs 5D. The groove 5E is configured as an annular groove for mounting on the two crimping tools constituting the crimping means B.

尚、その他の構成は、第１参考例で説明した構成と同一であるから、同一の構成箇所には、第１参考例と同一の番号を付記してそれの説明は省略する。
また、当該第３参考例では、前記係合ピース２６に被覆処理された防蝕ゴム層２２に、前記受口管部２５の係合孔２０内の係止空間に拡張状態で係止可能な第１係止部２２Ｂと、前記挿口管部２４の外周面２４ａにおける係合孔１９の開口周縁に抜止め係止可能な第２係止部２２Ｃとを形成したが、前記第１係止部２２Ｂ又は第２係止部２２Ｃのいずれか一方だけを形成して実施してもよい。 The other aspects of the configuration because it is identical to that described in the first reference example, the same configuration portions and that of described given the same number and the first reference example will be omitted.
In the third reference example , the anticorrosion rubber layer 22 coated on the engagement piece 26 can be locked in an expanded state in the engagement space in the engagement hole 20 of the receiving pipe portion 25. The first locking portion 22B and the second locking portion 22C that can be locked to the engagement hole 19 on the outer peripheral surface 24a of the insertion tube portion 24 are formed. Only one of the 22B and the second locking portion 22C may be formed for implementation.

〔第１実施形態〕
図１９、図２０は、前記両流体管Ｐの接続管部１に形成された被係合部の一例である円形状の係合孔１９と管継ぎ輪２に形成された被係合部の一例である円形状の係合孔２０とにわたって挿入装着された係合ピン（係合部材の一例）２１の管径方向内方側への抜け出し移動に抵抗を付与する抜け出し抑制手段Ｅの実施形態を示す。
この抜け出し抑制手段Ｅを構成するに、前記接続管部１の係合孔１９の内径Ｄ１と管継ぎ輪２の係合孔２０の内径Ｄ２とが同一に構成され、前記筒径方向で連通する両係合孔１９，２０に対して、内径及び外径が管径方向（筒径方向）で同一となるストレート形状に形成され、且つ、外周面の外径Ｄ３が係合孔１９，２０の内径Ｄ１，Ｄ２と同一又は略同一に構成された有底筒状の防蝕ゴム製等の弾性筒部材７０が管径方向内方側から挿入装着されているとともに、前記弾性筒部材７０内には、該弾性筒部材７０の内径Ｄ４よりも大径な部位を備えたテーパー形状に形成され、それの先端側の最小外径Ｄ５が弾性筒部材７０の内径Ｄ４と同一（又はそれよりも少し小）に形成されている係合ピン２１が管径方向内方側からハンマー等による叩き込み操作で圧入されている。 First Embodiment
19 and 20 show a circular engagement hole 19 which is an example of an engaged portion formed in the connecting pipe portion 1 of both the fluid pipes P and an engaged portion formed in the pipe joint ring 2. implementation of exit suppressing means E confers resistance to exit transfer to an example (an example of engaging members) circular engagement hole 20 Doo over inserted loaded engagement pin 21 pipe diameter direction inwardly of the The form is shown.
In order to constitute the escape prevention means E, the inner diameter D1 of the engagement hole 19 of the connecting pipe portion 1 and the inner diameter D2 of the engagement hole 20 of the pipe joint ring 2 are configured identically and communicate with each other in the cylinder radial direction. Both the engagement holes 19 and 20 are formed in a straight shape in which the inner diameter and the outer diameter are the same in the tube diameter direction (cylinder diameter direction), and the outer diameter D3 of the outer peripheral surface is the same as that of the engagement holes 19 and 20. An elastic cylindrical member 70 made of a bottomed cylindrical anticorrosion rubber or the like, which is configured to be the same as or substantially the same as the inner diameters D1 and D2, is inserted and mounted from the inner side in the radial direction of the pipe. The elastic cylinder member 70 is formed in a tapered shape having a portion larger than the inner diameter D4, and the minimum outer diameter D5 on the tip side thereof is the same as (or slightly smaller than the inner diameter D4 of the elastic cylinder member 70). The engaging pin 21 formed on the inner surface of the pipe is hit by a hammer or the like from the inner side in the pipe radial direction. It is press-fitted in the write operation.

尚、その他の構成は、第１・第２参考例で説明した構成と同一であるから、同一の構成箇所には、第１・第２参考例と同一の番号を付記してそれの説明は省略する。 The other aspects of the configuration because it is identical to that described in the first and second reference example, the same configuration portions, which description may be noted first and second reference example and the same numbers Omitted.

〔その他の実施形態〕
（１）上述の参考例及び実施形態では、流路を構成する状態で両筒部を嵌合接続してある継手構造として、両流体管Ｐの接続管部１同士を管継ぎ輪２で嵌合接続してある継手構造及び、前記挿口管部２４と受口管部２５とを嵌合接続してある継手構造を例に挙げて説明したが、バルブ等の流体機器の接続筒部と流体管とを直接又は継ぎ輪を介して嵌合接続する継手構造にも本発明の技術を適用することができる。 [Other Embodiments]
(1) In the reference example and the embodiment described above, the connecting pipe parts 1 of the two fluid pipes P are fitted with the pipe joint 2 as a joint structure in which both the cylinder parts are fitted and connected in the state of constituting the flow path. The joint structure that has been jointly connected and the joint structure in which the insertion tube portion 24 and the receiving tube portion 25 are fitted and connected have been described as examples. The technique of the present invention can also be applied to a joint structure in which a fluid pipe is fitted and connected directly or via a joint ring.

（２）上述の第１参考例では、前記内面バンド５の内周面における管軸芯Ｘ方向の３箇所を、圧着手段Ｂを構成する三つの圧着具で押圧するように構成したが、前記内面バンド５の内周面における管軸芯Ｘ方向両側部を二つの圧着具で押圧するように構成してもよく、さらに、前記内面バンド５の内周面全体を一つの圧着具で押圧するように構成してもよい。 ( 2 ) In the first reference example described above, the three locations in the tube axis X direction on the inner peripheral surface of the inner surface band 5 are configured to be pressed by three crimping tools constituting the crimping means B. The inner circumferential surface of the inner surface band 5 may be configured to press both side portions in the tube axis X direction with two crimping tools, and the entire inner circumferential surface of the inner surface band 5 is pressed with one crimping tool. You may comprise as follows.

（３）前記密封手段Ａとしては、小径側筒部の外周面と大径側筒部の内周面との対向面間を密封することのできるものであれば、如何なる密封構造を採用してもよい。 (3) above as a sealing means A, as long as it is capable of sealing between opposed surfaces of the outer peripheral surface and the inner peripheral surface of the large diameter side cylindrical portion of the small-diameter-side cylindrical portion, adopt any sealing structure May be.

（４）前記流路を構成する状態で嵌合接続される両筒部として、上述の第１,第２参考例，第１実施形態では、前記流体管Ｐの接続管部１とそれに外嵌装着される管継ぎ輪２を例に挙げて説明し、また、第３参考例では、挿口管部２４とこれに対して密封状態で外嵌接続される受口管部２５を例に挙げて説明したが、この構成に限定されるものではない。
例えば、フランジ接合された両流体管の接続管部とそれの内周面にわたって挿入装着される連結筒体とを、前記両接続管部の周方向複数箇所に形成された係合孔と連結筒体の両嵌合接続部位の周方向複数箇所に形成された係合孔とにわたって挿入される係合部材を介して固定連結してある管継手部構造において、前記両筒部が一方の流体管の接続管部と連結筒体とから構成されていてもよい。
さらに、前記両筒部の一方又は両方が仕切弁等の流体機器の接続筒部であってもよい。
要するに、前記両筒部としては、結果的に流路を構成する状態で嵌合接続されるものであればよく、また、流体管や流体機器等の全体又は一部を構成する筒部であってもよい。 ( 4 ) In the first and second reference examples and the first embodiment described above, as the two cylindrical portions that are fitted and connected in a state of constituting the flow path, the connecting pipe portion 1 of the fluid pipe P and the outer fitting thereof. The pipe joint ring 2 to be mounted will be described as an example . In the third reference example , the insertion pipe part 24 and the receiving pipe part 25 that is externally connected in a sealed state to the insertion pipe part 24 will be described as an example. However, the present invention is not limited to this configuration.
For example, connecting pipe portions of both fluid pipes that are flange-joined and connecting cylinders that are inserted and mounted over the inner peripheral surface thereof are connected to engagement holes and connecting cylinders formed at a plurality of locations in the circumferential direction of both connecting pipe portions. In a pipe joint structure that is fixedly connected via engagement members that are inserted across engagement holes formed at a plurality of circumferential positions of both fitting connection parts of the body, the two cylinder parts are one fluid pipe The connecting pipe part and the connecting cylinder may be included.
Further, one or both of the two tube portions may be a connection tube portion of a fluid device such as a gate valve.
In short, both the tube portions may be any tube portions that can be fitted and connected in a state where a flow path is formed as a result, and are tube portions that constitute the whole or a part of a fluid pipe or a fluid device. May be.

継手部の離脱防止構造の第１参考例を示す全体の断面側面図The first cross-sectional side view of the whole showing a reference example of separation preventive structure joint hand portion 全体の断面正面図Overall cross-sectional front view 離脱防止構造の要部の拡大断面側面図Enlarged sectional side view of the main part of the separation prevention 拡径操作機構の装着前の断面正面図Cross-sectional front view before mounting the diameter expansion mechanism 拡径操作機構の装着前と装着後を示す要部の拡大斜視図Enlarged perspective view of main parts showing before and after mounting of the diameter expansion operation mechanism 固定連結機構の装着前と装着後を示す要部の拡大斜視図The enlarged perspective view of the principal part which shows before and after mounting of a fixed connection mechanism 固定連結機構の装着後における全体の断面正面図Overall cross-sectional front view after mounting the fixed coupling mechanism 圧着帯状体に固定連結機構を取付けたときの内面側の断面側面図と外面側の側面図Cross-sectional side view on the inner surface side and side view on the outer surface side when the fixed coupling mechanism is attached to the crimping strip 係合ピンの拡大斜視図Enlarged perspective view of the engagement pin 係合ピンの挿入前の要部の拡大断面側面図Enlarged cross-sectional side view of the main part before insertion of the engagement pin 穿孔装置の正面図Front view of drilling device 穿孔装置を管内に突っ張り固定したときの断面側面図Cross-sectional side view when the drilling device is stretched and fixed in the pipe 穿孔装置の突っ張り固定手段に対して回転機枠を回動させたときの正面図Front view when the rotating machine frame is rotated with respect to the tension fixing means of the punching device 穿孔装置の回転穿孔手段及び管径方向送込み手段の拡大側面図Enlarged side view of the rotary punching means and the pipe diameter feeding means of the punching device 回転穿孔手段を管径方向に送込んだときの径方向送込みRadial feeding when rotating drilling means is fed in the radial direction 第２参考例を示す要部の拡大断面側面図Expanded cross-sectional side view of the main part showing the second reference example 第３参考例を示す要部の拡大断面側面図 Third enlarged cross-sectional side view of a main portion showing a reference example 第３参考例を示す要部の拡大断面正面図 Third enlarged sectional front view of a main portion showing a reference example 本発明の第１実施形態を示す要部の分解拡大断面側面図The exploded expanded sectional side view of the principal part which shows 1st Embodiment of this invention 弾性筒部材が挿入装着され、且つ係合ピンが圧入されたときの要部の拡大断面側面図An enlarged cross-sectional side view of the main part when the elastic cylinder member is inserted and mounted and the engagement pin is press-fitted

符号の説明Explanation of symbols

Ｂ 圧着手段
Ｅ 抜け出し抑制手段
Ｆ 突っ張り固定手段
Ｇ 強制回転手段
Ｊ 径方向送込み手段
Ｋ 周方向送込み手段
Ｌ 回動案内手段
１ 小径側筒部（接続管部）
２ 大径側筒部（管継ぎ輪）
５ 内面バンド
１９ 被係合部（係合孔）
２０ 被係合部（係合孔）
２１ 係合部材（係合ピン）
２２ 弾性被覆層（防蝕ゴム筒体）
２２Ａ 係止部（抜止め用係止部）
２２Ｂ 係止部（第１係止部）
２２Ｃ 係止部（第２係止部）
２４ 小径側筒部（挿口管部）
２５ 大径側筒部（受口管部）
２６ 係合部材（係合ピース）
３０ 回転機枠
３１ 回転穿孔具（穿孔ドリル又はエンドミル）
７０ 弾性筒部材 B Crimping means E Pull-out restraining means F Strut fixing means G Forced rotation means J Radial direction feeding means K Circumferential direction feeding means L Rotation guide means 1 Small diameter side cylinder part (connecting pipe part)
2 Large diameter side tube (pipe joint)
5 inner surface band 19 engaged part (engagement hole)
20 engaged part (engagement hole)
21 Engagement member (engagement pin)
22 Elastic coating layer (corrosion-resistant rubber cylinder)
22A Locking part (locking part for retaining)
22B Locking part (first locking part)
22C Locking part (second locking part)
24 Small diameter side tube (inlet tube)
25 Large diameter side tube (receiving tube)
26 Engagement member (engagement piece)
30 Rotating machine frame 31 Rotating drill (drilling drill or end mill)
70 Elastic cylinder member

Claims (5)

流路を構成する状態で嵌合接続される両筒部の嵌合接続部分における特定部位に、筒径方向内方側に開口する状態で互いに筒径方向で連通する被係合部が形成され、前記両被係合部にわたって、両筒部の流路方向での相対移動を阻止する係合部材が筒径方向内方側から挿入装着されている継手部の離脱防止構造であって、
前記両筒部の被係合部に装着された係合部材の筒径方向内方への抜け出し移動に抵抗を付与する抜け出し抑制手段が設けられ、
前記抜け出し抑制手段を構成するに、前記両筒部の被係合部が同一内径の係止孔から構成され、当該両係止孔の内径と同一又は略同一の外径に形成され且つ外径及び内径が筒径方向で夫々同一となるストレート形状に形成された弾性筒部材が、筒径方向で連通する両係止孔に対して筒径方向内方側から挿入装着されているとともに、前記弾性筒部材内に、該弾性筒部材の内径よりも大なる外径部位を備えたテーパー状に形成され、且つ、先端側の最小外径が前記弾性筒部材の内径と同一又はそれよりも小に形成された係合部材が筒径方向内方側から圧入されている継手部の離脱防止構造。 Engaged portions that communicate with each other in the cylinder radial direction are formed in a specific portion of the fitting connection portion of both cylinder portions that are fitted and connected in a state of forming a flow path in a state of opening inward in the cylinder radial direction. An engagement member for preventing relative movement in the flow path direction of both the cylinder parts across the both engaged parts is a structure for preventing the joint part from being detached and inserted from the inner side in the cylinder radial direction,
Disengagement restraining means for providing resistance to the disengagement movement of the engaging members attached to the engaged portions of both the tubular portions inward in the cylinder radial direction is provided ,
To constitute the pull-out suppressing means, the engaged portions of both the cylinder portions are formed of locking holes having the same inner diameter, and are formed to have the same or substantially the same outer diameter as the inner diameters of the both locking holes. And an elastic cylinder member formed in a straight shape having the same inner diameter in the cylinder radial direction is inserted and mounted from the inner side in the cylinder radial direction with respect to both locking holes communicating in the cylinder radial direction, The elastic cylinder member is formed in a tapered shape having an outer diameter portion larger than the inner diameter of the elastic cylinder member, and the minimum outer diameter on the distal end side is the same as or smaller than the inner diameter of the elastic cylinder member. A structure for preventing the joint part from being detached, in which the engaging member formed on the inner side is press-fitted from the inner side in the cylinder radial direction . 前記弾性筒部材が有底筒状に形成され、当該有底筒状に形成された弾性筒部材において前記ストレート形状に形成された筒部の厚みが底部の厚みより厚く形成されている請求項１に記載の継手部の離脱防止構造。 2. The elastic cylindrical member is formed in a bottomed cylindrical shape, and in the elastic cylindrical member formed in the bottomed cylindrical shape, the thickness of the cylindrical portion formed in the straight shape is thicker than the thickness of the bottom portion. Detaching prevention structure for joints as described in 1. 前記両筒部のうち、一方の小径側筒部が、流路方向に沿って隣接配置される両管部であり、他方の大径側筒部が、前記両管部に密封状態で外嵌接続される管継ぎ輪であって、前記両管部と管継ぎ輪の流路方向両側部との特定部位に形成された被係合部にわたって前記係合部材が装着されているとともに、前記係合部材の筒径方向内方側を密封する状態で前記両管部の内周面にわたって当て付けられる円環状の内面バンドと、該内面バンドを両管部の内周面に押し付け固定する圧着手段が設けられている請求項１又は２に記載の継手部の離脱防止構造。 Among the tube portions, one small-diameter side tube portion is a tube portion adjacently disposed along the flow path direction, and the other large-diameter side tube portion is externally fitted to the both tube portions in a sealed state. A pipe joint to be connected, wherein the engagement member is mounted over an engaged part formed at a specific portion of both pipe parts and both sides in the flow passage direction of the pipe joint. An annular inner surface band that is applied over the inner peripheral surfaces of the two tube portions in a state where the inner side in the cylinder radial direction of the combined member is sealed, and a pressure-bonding means that presses and fixes the inner surface bands against the inner peripheral surfaces of the two tube portions. The joint part detachment preventing structure according to claim 1 or 2 , wherein: 前記両筒部のうち、一方の小径側筒部が、流路方向に沿って配置される挿口管部であり、他方の大径側筒部が、前記挿口管部に対して密封状態で外嵌接続される受口管部であって、前記挿口管部と受口管部との特定部位に形成された被係合部にわたって前記係合部材が装着されているとともに、前記係合部材の筒径方向内方側を密封する状態で前記両管部の内周面にわたって当て付けられる円環状の内面バンドと、該内面バンドを両管部の内周面に押し付け固定する圧着手段が設けられている請求項１又は２に記載の継手部の離脱防止構造。 Of the two cylindrical portions, one small-diameter side cylindrical portion is an insertion tube portion arranged along the flow path direction, and the other large-diameter side cylindrical portion is sealed with respect to the insertion tube portion. A fitting tube that is externally connected to the engagement tube, and the engagement member is mounted over an engaged portion formed at a specific portion of the insertion tube portion and the reception tube portion. An annular inner surface band that is applied over the inner peripheral surfaces of the two tube portions in a state where the inner side in the cylinder radial direction of the combined member is sealed, and a pressure-bonding means that presses and fixes the inner surface bands against the inner peripheral surfaces of the two tube portions. The joint part detachment preventing structure according to claim 1 or 2 , wherein: 請求項１〜４のいずれか１項に記載の継手部の離脱防止構造の施工に用いられる穿孔装置であって、前記筒部の内壁に対して筒径方向から突っ張り状態で固定ならびに固定解除可能な突っ張り固定手段に、前記筒部の軸芯又は略軸芯周りで相対回転可能な回転機枠と、該回転機枠を強制回転させる強制回転手段を設けるとともに、前記回転機枠には、前記両筒部にわたって筒径方向から前記被係合部を形成可能な回転穿孔手段と、該回転穿孔手段を筒径方向に移動させる径方向送込み手段と、前記回転穿孔手段を筒部の軸芯又は略軸芯周りで円周方向に沿って移動させる周方向送込み手段と、前記回転機枠を筒部の内壁に沿って円周方向に回動案内する回動案内手段が設けられている穿孔装置。 It is a piercing | piercing apparatus used for construction of the joint part detachment | leave prevention structure of any one of Claims 1-4 , Comprising: It can fix | fix and release in a stretched state from the cylinder radial direction with respect to the inner wall of the said cylinder part. The tension fixing means is provided with a rotating machine frame that can be relatively rotated about the axis of the cylindrical portion or substantially around the axis, and a forced rotating means for forcibly rotating the rotating machine frame. Rotating drilling means capable of forming the engaged portion from both cylinder parts in the cylinder radial direction, radial feed means for moving the rotary drilling means in the cylinder radial direction, and the rotary drilling means as the axis of the cylinder part Alternatively, there are provided circumferential feed means for moving the circumference of the substantially axial center along the circumferential direction and rotation guide means for guiding the rotation machine frame to rotate along the inner wall of the cylindrical portion. Drilling device.
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