JP2021050826A

JP2021050826A - Flange reinforcement tool

Info

Publication number: JP2021050826A
Application number: JP2021005578A
Authority: JP
Inventors: 星野　洋一郎; Yoichiro Hoshino; 洋一郎星野; 悟武田; Satoru Takeda
Original assignee: Cosmo Koki Co Ltd
Current assignee: Cosmo Koki Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-04-01
Anticipated expiration: 2035-03-24
Also published as: JP7085033B2

Abstract

To provide a flange reinforcement tool capable of preventing a pair of holding members from floating from flange faces and maintaining a pressed state of the flange faces when the holding members are connected by connection members.SOLUTION: A flange reinforcement tool 31 reinforces flange connection by holding by a pair of holding members 32, 33, both flanges 6a, 6a of pipe line constitution members 6, 6 connected to both flanges 7a, 7a of a valve device 7 having the flanges 7a, 7a on both ends by a plurality of fastening members, and connecting the pair of holding members 32, 33 by connection members 37. At least one of the pair of holding members 32, 33 is formed with abutting surfaces 32j, 33j abutting on flange faces in a pipe line axial direction of the pipe line constitution members 6, 6, and flange parts 32b, 33b brought into contact with at least one of the outer peripheral surfaces of the flanges 6a, 6a or the outer peripheral surfaces of the flanges 7a, 7a of the valve device 7 connected to the flanges 6a, 6a. The abutting surfaces 32j, 33j are abutted between the plurality of fastening members.SELECTED DRAWING: Figure 10

Description

本発明は、両端にフランジを有する弁装置の両フランジにそれぞれ接合される管路構成部材の両フランジを一対の挟持部材で挟持し、該一対の挟持部材を連結部材で連結してフランジ接合を補強するフランジ補強具に関する。 In the present invention, both flanges of a pipeline constituent member to be joined to both flanges of a valve device having flanges at both ends are sandwiched by a pair of sandwiching members, and the pair of sandwiching members are connected by a connecting member to perform flange joining. Regarding flange reinforcements to be reinforced.

従来のフランジ部接合構造（フランジ補強具）は、両端にフランジを有する遮断弁（弁装置）の両フランジにそれぞれ接合される既設管路（管路構成部材）のフランジの管路軸方向のフランジ面に当接する一対の当て板（挟持部材）を連結棒（連結部材）で連結してフランジ接合を補強している（例えば、特許文献１参照）。 In the conventional flange joint structure (flange reinforcing tool), the flange in the pipeline axial direction of the flange of the existing pipeline (pipeline component) to be joined to both flanges of the shutoff valve (valve device) having flanges at both ends. A pair of backing plates (holding members) that come into contact with the surface are connected by a connecting rod (connecting member) to reinforce the flange joint (see, for example, Patent Document 1).

特許第４１５７１９８号公報（第５、６頁、第１図）Japanese Patent No. 4157198 (pages 5 and 6, FIG. 1)

しかしながら、特許文献１のフランジ部接合構造にあっては、遮断弁の両フランジにそれぞれ接合される既設管路のフランジ面に当接する一対の当て板を連結棒によって締め上げると、当て板が既設管路のフランジの外周縁部を支点にして回転する力が生じてしまうため、当て板がフランジ面から浮き上がり、当て板がフランジ面を十分に押圧することができないという問題がある。 However, in the flange joint structure of Patent Document 1, when a pair of backing plates that come into contact with the flange surfaces of the existing pipelines to be joined to both flanges of the shutoff valve are tightened by a connecting rod, the backing plates are already installed. Since a force is generated to rotate around the outer peripheral edge of the flange of the pipeline, there is a problem that the backing plate is lifted from the flange surface and the backing plate cannot sufficiently press the flange surface.

本発明は、一対の挟持部材を連結部材で連結したときに、該挟持部材がフランジ面から浮き上がるのを防ぎフランジ面の押圧状態を維持することができるフランジ補強具を提供することを目的とする。 An object of the present invention is to provide a flange reinforcing tool capable of preventing the holding member from rising from the flange surface and maintaining a pressed state of the flange surface when the pair of holding members are connected by the connecting member. ..

前記課題を解決するために、本発明のフランジ補強具は、
両端にフランジを有する弁装置の両フランジにそれぞれ接合される管路構成部材の両フランジを一対の挟持部材で挟持し、該一対の挟持部材を連結部材で連結してフランジ接合を補強するフランジ補強具であって、
前記一対の挟持部材の少なくとも一方は、前記管路構成部材の管路軸方向のフランジ面に当接する当接面と、該フランジの外周面若しくは該フランジに接合される前記弁装置のフランジの外周面の少なくとも一方に接触可能な鍔部とが一体に形成されていることを特徴としている。
この特徴によれば、一対の挟持部材を連結部材で連結したとき、挟持部材の鍔部が管路構成部材若しくは弁装置のフランジ外周面に接触して、挟持部材がフランジ面に対して回転するのを規制するので、挟持部材はフランジ面から浮き上がることなく、フランジ面の押圧状態を維持することができる。 In order to solve the above problems, the flange reinforcing tool of the present invention is used.
Flange reinforcement that reinforces flange joints by sandwiching both flanges of pipeline constituent members that are joined to both flanges of a valve device having flanges at both ends with a pair of sandwiching members and connecting the pair of sandwiching members with connecting members. It ’s an ingredient,
At least one of the pair of holding members is a contact surface that abuts on the flange surface of the pipeline component member in the pipeline axial direction, and the outer peripheral surface of the flange or the outer periphery of the flange of the valve device that is joined to the flange. It is characterized in that a flange portion that can come into contact with at least one of the surfaces is integrally formed.
According to this feature, when a pair of holding members are connected by a connecting member, the flange portion of the holding member comes into contact with the flange outer peripheral surface of the pipeline constituent member or the valve device, and the holding member rotates with respect to the flange surface. The holding member can maintain the pressed state of the flange surface without lifting from the flange surface.

本発明のフランジ補強具は、
前記鍔部の管路軸方向の長さは、該鍔部が接する前記管路構成部材のフランジの厚さより長寸に形成されることを特徴としている。
この特徴によれば、鍔部が接するフランジ厚さの全長を利用して挟持部材の回転を規制できるので、挟持部材はフランジ面から浮き上がることなく、フランジ面との接触状態を維持することができる。 The flange reinforcing tool of the present invention is
The length of the flange portion in the pipeline axis direction is characterized in that it is formed to be longer than the thickness of the flange of the pipeline component member with which the flange portion is in contact.
According to this feature, since the rotation of the sandwiching member can be regulated by using the entire length of the flange thickness in contact with the flange portion, the sandwiching member can maintain the contact state with the flange surface without rising from the flange surface. ..

本発明のフランジ補強具は、
前記鍔部は、前記フランジの外周面若しくは該フランジに接合される前記弁装置のフランジの外周面の少なくとも一方に当接していることを特徴としている。
この特徴によれば、鍔部は、前記フランジの外周面若しくは該フランジに接合される前記弁装置のフランジの外周面の少なくとも一方に当接して、連結部材による連結力の反力を支持できるので、挟持部材はほとんど回転することなく、フランジ面との接触状態を維持することができる。 The flange reinforcing tool of the present invention is
The flange portion is characterized in being in contact with at least one of the outer peripheral surface of the flange or the outer peripheral surface of the flange of the valve device joined to the flange.
According to this feature, the flange portion can abut on at least one of the outer peripheral surface of the flange or the outer peripheral surface of the flange of the valve device joined to the flange to support the reaction force of the connecting force by the connecting member. , The holding member can maintain the contact state with the flange surface with almost no rotation.

本発明のフランジ補強具は、
前記鍔部は、少なくとも前記管路構成部材のフランジの周方向に弧状に延設されることを特徴としている。
この特徴によれば、鍔部は管路構成部材のフランジの周方向に弧状に延設されるので、鍔部自身の剛性を高め、変形を抑えることができる。 The flange reinforcing tool of the present invention is
The flange portion is characterized in that it extends at least in an arc shape in the circumferential direction of the flange of the pipeline component member.
According to this feature, since the flange portion is extended in an arc shape in the circumferential direction of the flange of the pipeline constituent member, the rigidity of the flange portion itself can be increased and deformation can be suppressed.

本発明のフランジ補強具は、
前記挟持部材は、一端を支点にして開閉可能な分割構造であることを特徴としている。
この特徴によれば、一端を支点にした開閉可能な分割構造を利用して、挟持部材の鍔部をフランジ外周面に容易に接触させて組立てることができる。 The flange reinforcing tool of the present invention is
The sandwiching member is characterized by having a divided structure that can be opened and closed with one end as a fulcrum.
According to this feature, the flange portion of the holding member can be easily brought into contact with the outer peripheral surface of the flange for assembly by utilizing the split structure that can be opened and closed with one end as a fulcrum.

（ａ）は弁装置及び管路構成部材に実施例１におけるフランジ補強具を取付けた状態を示す側面図、（ｂ）はフランジ補強具の取付け対象となる弁装置及び管路構成部材を示す側面図である。(A) is a side view showing a state in which the flange reinforcing tool according to the first embodiment is attached to the valve device and the pipeline component, and (b) is a side view showing the valve device and the pipeline component to which the flange reinforcing tool is attached. It is a figure. （ａ）は実施例１におけるフランジ補強具の挟持部材の平面図、（ｂ）は（ａ）のＡ−Ａ断面図、（ｃ）は（ａ）のＢ−Ｂ断面図、（ｄ）は（ａ）のＣ−Ｃ断面図である。(A) is a plan view of the holding member of the flange reinforcing tool in Example 1, (b) is a sectional view taken along the line AA of (a), (c) is a sectional view taken along the line BB of (a), and (d) is a sectional view taken along the line BB of (a). It is a cross-sectional view of CC of (a). （ａ）は図２（ａ）のＤ−Ｄ矢視図、（ｂ）は図２（ａ）のＦ矢視図、（ｃ）は図２のＥ矢視図である。FIG. 2A is a view taken along the line DD of FIG. 2A, FIG. 2B is a view taken along the line F of FIG. 2A, and FIG. 2C is a view taken along the line E of FIG. （ａ）はフランジ補強具の挟持部材を結合部材で結合した状態示す平面図、（ｂ）は挟持部材の一方を支点にして開放した状態を示す図である。(A) is a plan view showing a state in which the holding members of the flange reinforcing tool are joined by the joining member, and (b) is a view showing a state in which one of the holding members is used as a fulcrum and is opened. （ａ）はフランジ補強具の側面図、（ｂ）はフランジ補強具の正面図である。(A) is a side view of the flange reinforcing tool, and (b) is a front view of the flange reinforcing tool. （ａ）はフランジ補強具を開放してフランジへの取付けを示す平面図、（ｂ）はフランジ補強具を取付けた状態を示す側面図である。(A) is a plan view showing the flange reinforcing tool opened and attached to the flange, and (b) is a side view showing a state in which the flange reinforcing tool is attached. （ａ）はフランジ補強具の連結部材を締付けたときの状況を示す図、（ｂ）は従来のフランジ補強具の連結部材を締付けたときの状況を示す図である。(A) is a diagram showing a situation when the connecting member of the flange reinforcing tool is tightened, and (b) is a diagram showing a situation when the connecting member of the conventional flange reinforcing tool is tightened. （ａ）は実施例２におけるフランジ補強具を弁装置及び管路構成部材に取付けた状態を示す側面図、（ｂ）はフランジ補強具を取付けた状態を示す正面図である。(A) is a side view showing a state in which the flange reinforcing tool in the second embodiment is attached to the valve device and the pipeline component, and (b) is a front view showing a state in which the flange reinforcing tool is attached. （ａ）は実施例２におけるフランジ補強具の挟持部材の平面図、（ｂ）は（ａ）のＧ−Ｇ断面図、（ｃ）は（ａ）のＨ−Ｈ断面図である。(A) is a plan view of the holding member of the flange reinforcing tool in the second embodiment, (b) is a sectional view taken along the line GG of (a), and (c) is a sectional view taken along the line HH of (a). （ａ）は実施例３におけるフランジ補強具を弁装置及び管路構成部材に取付けた状態を示す側面図、（ｂ）はフランジ補強具を取付けた状態を示す正面図である。(A) is a side view showing a state in which the flange reinforcing tool in the third embodiment is attached to the valve device and the pipeline component, and (b) is a front view showing a state in which the flange reinforcing tool is attached. 実施例３におけるフランジ補強具を示す図である。It is a figure which shows the flange reinforcing tool in Example 3. FIG. は実施例４におけるフランジ補強具を弁装置及び管路構成部材に取付けた状態を示す図である。Is a diagram showing a state in which the flange reinforcing tool according to the fourth embodiment is attached to the valve device and the pipeline constituent member. （ａ）は実施例４におけるフランジ補強具の一方の挟持部材の平面図、（ｂ）は（ａ）のＩ−Ｉ矢視図である。(A) is a plan view of one holding member of the flange reinforcing tool in the fourth embodiment, and (b) is a view taken along the line I-I of (a). （ａ）は実施例４におけるフランジ補強具の他方の挟持部材の組立て状態の平面図、（ｂ）は該挟持部材の分解状態の平面図、（ｃ）は（ｂ）のＪ−Ｊ矢視図である。(A) is a plan view of the assembled state of the other holding member of the flange reinforcing tool in the fourth embodiment, (b) is a plan view of the disassembled state of the holding member, and (c) is a JJ arrow view of (b). It is a figure. （ａ）は、実施例４におけるフランジ補強具の平面図、（ｂ）は側面図、（ｃ）は一方の挟持部材の正面図である。(A) is a plan view of the flange reinforcing tool in the fourth embodiment, (b) is a side view, and (c) is a front view of one of the holding members.

本発明に係るフランジ補強具を図１から図１５を参照して説明する。 The flange reinforcing tool according to the present invention will be described with reference to FIGS. 1 to 15.

図１に示されるように、流体管３の分岐首部３ｂに設けられた分岐部フランジ３ｃには補修弁４のフランジ４ｃが接続され、補修弁４のフランジ４ｄには消火栓２のフランジ２ｄが接続され、補修弁４のフランジ４ｃと消火栓２のフランジ２ｄとがフランジ補強具１０によって結合、補強される。ここで、補修弁４が本発明に係る弁装置に相当し、補修弁４のフランジ４ｃ、４ｄが本発明に係る弁装置の両フランジに相当する。また、流体管３及び消火栓２が本発明に係る管路構成部材に相当し、流体管３の分岐部フランジ３ｃ及び消火栓２のフランジ２ｄが本発明に係る管路構成部材の両フランジに相当する。また、図１において、上下方向が管路軸方向に相当する。 As shown in FIG. 1, the flange 4c of the repair valve 4 is connected to the branch flange 3c provided on the branch neck 3b of the fluid pipe 3, and the flange 2d of the fire hydrant 2 is connected to the flange 4d of the repair valve 4. Then, the flange 4c of the repair valve 4 and the flange 2d of the fire hydrant 2 are connected and reinforced by the flange reinforcing tool 10. Here, the repair valve 4 corresponds to the valve device according to the present invention, and the flanges 4c and 4d of the repair valve 4 correspond to both flanges of the valve device according to the present invention. Further, the fluid pipe 3 and the fire hydrant 2 correspond to the pipeline constituent members according to the present invention, and the branch flange 3c of the fluid pipe 3 and the flange 2d of the fire hydrant 2 correspond to both flanges of the pipeline constituent member according to the present invention. .. Further, in FIG. 1, the vertical direction corresponds to the pipeline axial direction.

ここで、流体管３は、既設流体管あるいは新設流体管であってもよく、地中に埋設されるダクタイル鋳鉄製であり、断面視略円形状に形成され、内周面がモルタル層で被覆されている。尚、本発明に係る流体管は、その他鋳鉄、鋼等の金属製、あるいは石綿、コンクリート製、塩化ビニール、ポリエチレン若しくはポリオレフィン製等であってもよい。更に尚、流体管の内周面はモルタル層に限らず、例えばエポキシ樹脂等により被覆されてもよく、若しくは適宜の材料を粉体塗装により流体管の内周面に被覆してもよい。また、本実施例では流体管内の流体は上水であるが、本実施例の上水に限らず、例えば工業用水や農業用水、下水等の他、ガスやガスと液体との気液混合体であっても構わない。 Here, the fluid pipe 3 may be an existing fluid pipe or a new fluid pipe, is made of ductile cast iron buried in the ground, is formed in a substantially circular shape in cross section, and the inner peripheral surface is covered with a mortar layer. Has been done. The fluid pipe according to the present invention may be made of other metals such as cast iron or steel, or may be made of asbestos, concrete, vinyl chloride, polyethylene, polyolefin or the like. Furthermore, the inner peripheral surface of the fluid pipe is not limited to the mortar layer, and may be coated with, for example, an epoxy resin, or an appropriate material may be coated on the inner peripheral surface of the fluid pipe by powder coating. Further, in this embodiment, the fluid in the fluid pipe is clean water, but the fluid is not limited to the clean water of this embodiment, for example, industrial water, agricultural water, sewage, etc. It doesn't matter.

図１（ａ）に示されるように、フランジ補強具１０は、消火栓２のフランジ２ｄを管路軸方向に挟持する第１挟持部材１１と、流体管３の分岐部フランジ３ｃを管路軸方向に挟持する第２挟持部材１４と、第１挟持部材１１と第２挟持部材１４を連結する連結部材１７と、第１挟持部材１１及び第２挟持部材１４を一体に結合して環状に構成する結合部材１８と、から主に構成される。 As shown in FIG. 1A, the flange reinforcing tool 10 has a first holding member 11 that holds the flange 2d of the fire hydrant 2 in the pipeline axial direction and a branch flange 3c of the fluid pipe 3 in the pipeline axial direction. The second sandwiching member 14 sandwiched between the two, the connecting member 17 connecting the first sandwiching member 11 and the second sandwiching member 14, and the first sandwiching member 11 and the second sandwiching member 14 are integrally connected to form an annular shape. It is mainly composed of a connecting member 18.

以下、第１挟持部材１１及び第２挟持部材１４について説明する。なお、第１挟持部材１１及び第２挟持部材１４は同一構造を有するので、第１挟持部材１１について説明する。 Hereinafter, the first holding member 11 and the second holding member 14 will be described. Since the first holding member 11 and the second holding member 14 have the same structure, the first holding member 11 will be described.

図２に示されるように、第１挟持部材１１は、周方向に分割された分割挟持部材１２、１３からなり、該分割挟持部材１２、１３は結合部材１８（図１（ａ）参照）により環状一体に結合される。なお、本実施例においては、第１挟持部材１１を２分割した実施例を示したが、これに限らず３分割以上に分割してもよい。 As shown in FIG. 2, the first sandwiching member 11 is composed of the divided sandwiching members 12 and 13 divided in the circumferential direction, and the divided sandwiching members 12 and 13 are formed by the coupling member 18 (see FIG. 1A). It is connected in an annular shape. In this embodiment, the first sandwiching member 11 is divided into two parts, but the present invention is not limited to this, and the first holding member 11 may be divided into three or more parts.

第１挟持部材１１を構成する分割挟持部材１２には、２つの突状部からなり、消火栓２のフランジ２ｄを管路軸方向に挟持するための挟持部１２ａ、１２ａが径方向内側を向くように形成され、該挟持部１２ａ、１２ａに対応する周方向位置で径方向外側を向くように挟持鍔部１２ｃ、１２ｃが形成される。そして、挟持部１２ａ、１２ａ及び挟持鍔部１２ｃ、１２ｃは、消火栓２のフランジ２ｄの外周に沿うように弧状に延設された連結部１２ｂにより一体に形成され、分割挟持部材１２自身の剛性の向上が図られている。この場合、剛性が保たれていれば、挟持部１２ａ、１２ａ、挟持鍔部１２ｃ、１２ｃは、別部材として組立てて一体となるようにしてもよい。また、連結部１２ｂの周方向端部には一対の突出部１２ｄ、１２ｅが互いに逆向きに径方向外側に形成され、該突出部１２ｄ、１２ｅには結合部材１８を挿通するための挿通孔１２ｈ、１２ｈ（図３（ａ）参照）が形成されている。さらに、挟持鍔部１２ｃ、１２ｃにはだ円状の挿通孔１２ｃｈ、１２ｃｈが形成され、該だ円状の挿通孔１２ｃｈ、１２ｃｈにはだ円状の頭部を有するボルト１７ａが挿通され、該だ円状の頭部によりボルト１７ａは回り止めされている。なお、挿通孔１２ｃｈ、１２ｃｈの形状はだ円に限らず、円形、矩形、小判形等の他の形状であってもよい。 The split sandwiching member 12 constituting the first sandwiching member 11 is composed of two projecting portions, so that the sandwiching portions 12a and 12a for sandwiching the flange 2d of the fire hydrant 2 in the pipeline axial direction face inward in the radial direction. The holding flange portions 12c and 12c are formed so as to face radially outward at the circumferential position corresponding to the holding portions 12a and 12a. The sandwiching portions 12a and 12a and the sandwiching flange portions 12c and 12c are integrally formed by a connecting portion 12b extending in an arc shape along the outer circumference of the flange 2d of the fire hydrant 2, and the rigidity of the split sandwiching member 12 itself is increased. Improvements are being made. In this case, as long as the rigidity is maintained, the holding portions 12a and 12a and the holding flange portions 12c and 12c may be assembled as separate members and integrated. Further, a pair of projecting portions 12d and 12e are formed radially outward in the opposite directions to each other at the circumferential end portion of the connecting portion 12b, and an insertion hole 12h for inserting the coupling member 18 is formed in the projecting portions 12d and 12e. , 12h (see FIG. 3A). Further, elliptical insertion holes 12ch and 12ch are formed in the holding collar portions 12c and 12c, and a bolt 17a having an elliptical head is inserted into the elliptical insertion holes 12ch and 12ch. The bolt 17a is stopped by the elliptical head. The shape of the insertion holes 12ch and 12ch is not limited to an ellipse, and may be other shapes such as a circle, a rectangle, and an oval shape.

同様に、第１挟持部材１１を構成する分割挟持部材１３には、２つの突状部からなり、消火栓２のフランジ２ｄを管路軸方向に挟持するための挟持部１３ａ、１３ａが径方向内側を向くように形成され、該挟持部１３ａ、１３ａに対応する周方向位置で径方向外側を向くように挟持鍔部１３ｃ、１３ｃが形成される。そして、挟持部１３ａ、１３ａ及び挟持鍔部１３ｃ、１３ｃは、消火栓２のフランジ２ｄの外周に沿うように弧状に延設された連結部１３ｂにより一体に形成され、分割挟持部材１３自身の剛性の向上が図られている。この場合、剛性が保たれていれば、挟持部１３ａ、１３ａ、挟持鍔部１３ｃ、１３ｃは、別部材として組立てて一体となるようにしてもよい。また、連結部１３ｂの周方向端部には一対の突出部１３ｄ、１３ｅが互いに逆向きに径方向外側に形成され、該突出部１３ｄ、１３ｅには結合部材１８を挿通する挿通孔１３ｈ、１３ｈ（図３（ｂ）参照）が形成されている。さらに、挟持鍔部１３ｃ、１３ｃにはだ円状の挿通孔１３ｃｈ、１３ｃｈが形成され、該だ円状の挿通孔１３ｃｈ、１３ｃｈにはだ円状の頭部を有するボルト１７ａが挿通され、該だ円状の頭部によりボルト１７ａは回り止めされている。なお、挿通孔１３ｃｈ、１３ｃｈの形状はだ円に限らず、円形、矩形、小判形等の他の形状であってもよい。 Similarly, the split sandwiching member 13 constituting the first sandwiching member 11 is composed of two protruding portions, and the sandwiching portions 13a and 13a for sandwiching the flange 2d of the fire hydrant 2 in the pipeline axial direction are inside in the radial direction. The holding flange portions 13c and 13c are formed so as to face outward in the radial direction at the circumferential position corresponding to the holding portions 13a and 13a. The sandwiching portions 13a and 13a and the sandwiching flange portions 13c and 13c are integrally formed by a connecting portion 13b extending in an arc shape along the outer circumference of the flange 2d of the fire hydrant 2, and the rigidity of the divided sandwiching member 13 itself is increased. Improvements are being made. In this case, as long as the rigidity is maintained, the holding portions 13a and 13a and the holding flange portions 13c and 13c may be assembled as separate members and integrated. Further, a pair of projecting portions 13d and 13e are formed radially outward in the opposite directions to each other at the circumferential end portion of the connecting portion 13b, and the insertion holes 13h and 13h through which the coupling member 18 is inserted are formed in the projecting portions 13d and 13e. (See FIG. 3B) is formed. Further, elliptical insertion holes 13ch and 13ch are formed in the holding flange portions 13c and 13c, and a bolt 17a having an elliptical head is inserted into the elliptical insertion holes 13ch and 13ch. The bolt 17a is stopped by the elliptical head. The shape of the insertion holes 13ch and 13ch is not limited to an ellipse, and may be other shapes such as a circle, a rectangle, and an oval shape.

また、後述するように、連結部材１７によって第１挟持部材１１（分割挟持部材１２）と第２挟持部材１４（分割挟持部材１５）とを締付けたときの反力は、連結部１２ｂの支持面１２ｋ、連結部１３ｂの支持面１３ｋが消火栓２のフランジ２ｄの外周面に当接することによって支持できるように構成されており、連結部１２ｂ、１３ｂは、本発明の鍔部として機能する（図７参照）。 Further, as will be described later, the reaction force when the first sandwiching member 11 (divided sandwiching member 12) and the second sandwiching member 14 (divided sandwiching member 15) are tightened by the connecting member 17 is the support surface of the connecting portion 12b. 12k, the support surface 13k of the connecting portion 13b is configured to be supported by abutting on the outer peripheral surface of the flange 2d of the fire hydrant 2, and the connecting portions 12b and 13b function as the flange portion of the present invention (FIG. 7). reference).

なお、分割挟持部材１２の突出部１２ｄは径方向外側に向けて先細りとなるように円弧状に形成され（図２（ａ）参照）、さらに該突出部１２ｄには溝部１２ｆ（図３（ｃ）参照）が形成されている。一方、該分割挟持部材１２の突出部１２ｄに相対する分割挟持部材１３の突出部１３ｅも径方向外側に向けて先細りとなるように円弧状に形成され（図２（ａ）参照）、該突出部１３ｅには突状部１３ｇ（図３（ｃ）参照）が形成されている。同じく、分割挟持部材１２の周方向端部の突出部１２ｅは径方向外側に向けて先細りとなるように円弧状に形成され、さらに該突出部１２ｅには突状部１２ｇが形成され（図２（ａ）参照）、分割挟持部材１２の突出部１２ｅに相対する分割挟持部材１３の周方向端部の突出部１３ｄも径方向外側に向けて先細りとなるように円弧状に形成され、該突出部１３ｄには溝部１３ｆ（図２（ａ）参照）が形成されている。 The protruding portion 12d of the split sandwiching member 12 is formed in an arc shape so as to taper outward in the radial direction (see FIG. 2A), and the protruding portion 12d has a groove portion 12f (FIG. 3 (c)). ) Is formed. On the other hand, the protruding portion 13e of the split holding member 13 facing the protruding portion 12d of the split holding member 12 is also formed in an arc shape so as to taper outward in the radial direction (see FIG. 2A), and the protrusion is formed. A protruding portion 13g (see FIG. 3C) is formed in the portion 13e. Similarly, the protruding portion 12e at the circumferential end of the split holding member 12 is formed in an arc shape so as to taper outward in the radial direction, and the protruding portion 12e is further formed with a protruding portion 12g (FIG. 2). (See (a)), the protruding portion 13d at the circumferential end of the split holding member 13 facing the protruding portion 12e of the split holding member 12 is also formed in an arc shape so as to taper outward in the radial direction, and the protrusion is formed. A groove portion 13f (see FIG. 2A) is formed in the portion 13d.

分割挟持部材１２及び１３は以上説明した構成を有することで、分割挟持部材１２の溝部１２ｆと分割挟持部材１３の突状部１３ｇ、及び分割挟持部材１２の突状部１２ｇと分割挟持部１３の溝部１３ｆは、互いに凹凸係合するので、容易に環状に組立てることができる（図２（ａ）参照）。そして、挿通孔１２ｈ、１２ｈ、１３ｈ、１３ｈ（図３（ａ）、（ｂ）参照）にボルト１８ａを挿通し、該ボルト１８ａ及びナット１８ｂを締付け容易に環状一体に組立てることができる（図４（ａ）参照）。また、挿通孔１２ｈ、１２ｈ、１３ｈ、１３ｈはだ円状に形成され、該挿通孔１２ｈ、１２ｈ、１３ｈ、１３ｈにはだ円状の頭部を有するボルト１８ａが挿通され、該だ円状の頭部によりボルト１８ａは回り止めされている。なお、挿通孔１２ｈ、１２ｈ、１３ｈ、１３ｈはだ円状に限らず、円形、矩形、小判形等の他の形状であってもよい。 Since the split sandwiching members 12 and 13 have the above-described configuration, the groove portion 12f of the split sandwiching member 12 and the projecting portion 13g of the split sandwiching member 13, and the projecting portion 12g of the split sandwiching member 12 and the split sandwiching portion 13 Since the groove portions 13f engage with each other unevenly, they can be easily assembled in an annular shape (see FIG. 2A). Then, the bolt 18a is inserted into the insertion holes 12h, 12h, 13h, 13h (see FIGS. 3A and 3B), and the bolt 18a and the nut 18b can be easily tightened and assembled in an annular shape (FIG. 4). (A). Further, the insertion holes 12h, 12h, 13h and 13h are formed in an elliptical shape, and a bolt 18a having an elliptical head is inserted into the insertion holes 12h, 12h, 13h and 13h to form the elliptical shape. The bolt 18a is stopped by the head. The insertion holes 12h, 12h, 13h, and 13h are not limited to an elliptical shape, and may have other shapes such as a circular shape, a rectangular shape, and an oval shape.

さらに、図４（ｂ）に示されるように、一方の結合部材１８のボルト１８ａとナット１８ｂの結合状態を緩め、他方の結合部材１８を取外した状態で、分割挟持部材１２の突出部１２ｅの円弧形の突状部１２ｇと分割挟持部材１３の突出部１３ｄの円弧形の溝部１３ｆとを互いに転動させて、分割挟持部材１２及び１３の周方向端部の一方を閉じた状態で、他方を開くことができるので、互いに分割された分割挟持部材１２及び１３であっても一体に取り扱うことができるのでフランジへ容易に取付けることができる。 Further, as shown in FIG. 4B, in a state where the bolt 18a and the nut 18b of one coupling member 18 are loosened and the other coupling member 18 is removed, the protruding portion 12e of the split holding member 12 The arc-shaped protruding portion 12g and the arc-shaped groove portion 13f of the protruding portion 13d of the split holding member 13 are rolled with each other, and one of the circumferential ends of the split holding members 12 and 13 is closed. Since the other can be opened, even the divided sandwiching members 12 and 13 that are separated from each other can be handled integrally, so that they can be easily attached to the flange.

なお、図２及び図３（ａ）に示すように、連結部１２ｂ及び連結部１３ｂの支持面１２ｋ、１３ｋには弾性体からなる芯出し部材１２ｍ、１３ｍが配設され、フランジ２ｄの外径寸法のばらつきを吸収できるようになっている。特に、既設流体管のフランジの発錆が激しい場合には有効である。 As shown in FIGS. 2 and 3A, centering members 12m and 13m made of elastic bodies are arranged on the support surfaces 12k and 13k of the connecting portion 12b and the connecting portion 13b, and the outer diameter of the flange 2d is increased. It is designed to absorb dimensional variations. In particular, it is effective when the flange of the existing fluid pipe is severely rusted.

つぎに、フランジ補強具１０を使用してフランジ接合を補強する手順について説明する。 Next, a procedure for reinforcing the flange joint by using the flange reinforcing tool 10 will be described.

図５に示されるように、第１挟持部材１１と第２挟持部材１４とを所定の間隔を設けて対向させ、連結部材１７によって連結する。この状態で図６に示されるように、第１挟持部材１１と第２挟持部材１４を一方の結合部材１８、１８を取付けた側を支点にして開き、消火栓２のフランジ２ｄ及び分岐部フランジ３ｃ（図１（ｂ）参照）に取付け、結合部材１８、１８、…を締付け、第１挟持部材１１と第２挟持部材１４を環状に一体化する。最後に、連結部材１７を締付け、第１挟持部材１１及び第２挟持部材によって、分岐部フランジ３ｃ、補修弁４及び消火栓２のフランジ２ｄを挟持する。ここで、第１挟持部材１１は消火栓２に取付けられる際に、消火栓２と干渉して組立不能とならないように、切欠き部１２ｐ、１３ｐが設けられている（図５（ｂ）参照）。 As shown in FIG. 5, the first sandwiching member 11 and the second sandwiching member 14 are opposed to each other at a predetermined interval, and are connected by the connecting member 17. In this state, as shown in FIG. 6, the first holding member 11 and the second holding member 14 are opened with the side to which one of the connecting members 18 and 18 is attached as a fulcrum, and the flange 2d and the branch portion flange 3c of the fire hydrant 2 are opened. (See FIG. 1 (b)), the coupling members 18, 18, ... Are tightened, and the first holding member 11 and the second holding member 14 are integrally integrated in an annular shape. Finally, the connecting member 17 is tightened, and the branch portion flange 3c, the repair valve 4, and the flange 2d of the fire hydrant 2 are sandwiched by the first sandwiching member 11 and the second sandwiching member. Here, when the first holding member 11 is attached to the fire hydrant 2, notches 12p and 13p are provided so that the first holding member 11 does not interfere with the fire hydrant 2 and cannot be assembled (see FIG. 5B).

なお、第１挟持部材１１と第２挟持部材１４を一方の結合部材１８、１８を取付けた側を支点にして開くことなく、つぎのように取付けてもよい。すなわち、第１挟持部材１１と第２挟持部材１４とを所定の間隔を設けて対向させ、連結部材１７によって連結する。そして、消火栓２のフランジ２ｄ及び分岐部フランジ３ｃの外径を通過できる程度に、第１挟持部材１１と第２挟持部材１４とを締結する結合部材１８、１８を緩めて、第１挟持部材１１と第２挟持部材１４とを一体にした状態で消火栓２のフランジ２ｄ及び分岐部フランジ３ｃに取付けた後、結合部材１８、１８、…を締付けて一体化してもよい。 The first holding member 11 and the second holding member 14 may be attached as follows without opening with the side to which one of the connecting members 18 and 18 is attached as a fulcrum. That is, the first sandwiching member 11 and the second sandwiching member 14 are opposed to each other at a predetermined interval, and are connected by the connecting member 17. Then, the coupling members 18 and 18 for fastening the first sandwiching member 11 and the second sandwiching member 14 are loosened so that the outer diameters of the flange 2d and the branch portion flange 3c of the fire hydrant 2 can be passed, and the first sandwiching member 11 is loosened. After attaching the fire hydrant 2 to the flange 2d and the branch flange 3c in a state where the second holding member 14 and the second holding member 14 are integrated, the coupling members 18, 18, ... May be tightened and integrated.

さらに、第１挟持部材１１を消火栓２のフランジ２ｄに取付け、第２挟持部材１４を分岐部フランジ３ｃに取付けた後、第１挟持部材１１と第２挟持部材１４とを連結部材１７によって連結して一体化してもよい。 Further, after the first holding member 11 is attached to the flange 2d of the fire hydrant 2 and the second holding member 14 is attached to the branch flange 3c, the first holding member 11 and the second holding member 14 are connected by the connecting member 17. May be integrated.

ここで、連結部材１７を締付け、第１挟持部材１１及び第２挟持部材１４によって、分岐部フランジ３ｃ、補修弁４及び消火栓２のフランジ２ｄを挟持したときのフランジ補強具１０の挙動について説明する。 Here, the behavior of the flange reinforcing tool 10 when the connecting member 17 is tightened and the branch portion flange 3c, the repair valve 4, and the flange 2d of the fire hydrant 2 are sandwiched by the first sandwiching member 11 and the second sandwiching member 14 will be described. ..

図７（ａ）に示されるように、第１挟持部材１１の一方の分割挟持部材１２の押圧面１２ｊは、フランジ２ｄの管路軸方向のフランジ面に当接し、第２挟持部材１４の一方の分割挟持部材１５の押圧面１５ｊは、分岐部フランジ３ｃの管路軸方向フランジ面に当接している。また、フランジ２ｄの外周面には分割挟持部材１２の連結部１２ｂの支持面１２ｋが対向配置され、分岐部フランジ３ｃの外周面には分割挟持部材１５の連結部１５ｂの支持面１５ｋが対向配置されている。この状態で連結部材１７を締付けると、分割挟持部材１２及び１５は、フランジ２ｄ、３ｃの外周縁を支点にして回転力が生じて、分割挟持部材１２の支持面１２ｋ、分割挟持部材１５の支持面１５ｋがフランジ外周面に接触して、分割挟持部材１２の挟持部１２ａの押圧面１２ｊ及び分割挟持部材１５の挟持部１５ａの押圧面１５ｊがフランジ面から浮き上がることを防止することができ、管路軸方向のフランジ面の押圧状態を維持することできる。 As shown in FIG. 7A, the pressing surface 12j of one of the divided sandwiching members 12 of the first sandwiching member 11 abuts on the flange surface of the flange 2d in the pipeline axial direction, and one of the second sandwiching members 14 The pressing surface 15j of the split holding member 15 is in contact with the conduit axial flange surface of the branch flange 3c. Further, the support surface 12k of the connecting portion 12b of the split holding member 12 is arranged to face the outer peripheral surface of the flange 2d, and the support surface 15k of the connecting portion 15b of the split holding member 15 is arranged to face each other on the outer peripheral surface of the branch flange 3c. Has been done. When the connecting member 17 is tightened in this state, the split holding members 12 and 15 generate a rotational force with the outer peripheral edges of the flanges 2d and 3c as fulcrums to support the support surface 12k of the split holding member 12 and the split holding member 15. It is possible to prevent the surface 15k from coming into contact with the outer peripheral surface of the flange and the pressing surface 12j of the sandwiching portion 12a of the split sandwiching member 12 and the pressing surface 15j of the sandwiching portion 15a of the split sandwiching member 15 from rising from the flange surface. The pressed state of the flange surface in the road axis direction can be maintained.

これに対し、図７（ｂ）に示されるように、連結部を設けないで平板状に形成された従来の分割挟持部材７２、分割挟持部材７５によって、分岐部フランジ３ｃ、フランジ２ｄを挟持した場合には、連結部材７７の締付けにより、分割挟持部材７２はフランジ２ｄの外周縁を支点にして回転し、押圧面７２ｊ、７５ｊはフランジ２ｄの管路軸方向のフランジ面から浮き上がり、フランジ面の押圧状態を維持することできない。 On the other hand, as shown in FIG. 7B, the branch portion flange 3c and the flange 2d were sandwiched by the conventional split sandwiching member 72 and the split sandwiching member 75 formed in a flat plate shape without providing the connecting portion. In this case, by tightening the connecting member 77, the split holding member 72 rotates with the outer peripheral edge of the flange 2d as a fulcrum, and the pressing surfaces 72j and 75j rise from the flange surface of the flange 2d in the pipeline axial direction, and the flange surface The pressed state cannot be maintained.

なお、図７（ａ）に示されるように、連結部１２ｂの支持面１２ｋの管路軸方向の長さは、該支持面１２ｋが接するフランジ２ｄの厚さより長寸に形成されているので、連結部１２ｂの支持面１２ｋがフランジ２ｄに接する全長を利用して分割挟持部材１２の回転を規制できる。また、連結部１２ｂの支持面１２ｋの長さをフランジ２ｄ、４ｄに跨るようにすることにより、連結部材１７による締付け反力をさらに効率良く支持することができる。この際、連結部１２ｂの支持面１２ｋはフランジ２ｄ、４ｄの両方に当接するようにしてもよいし、フランジ４ｄのみに当接するようにしてもよい。 As shown in FIG. 7A, the length of the support surface 12k of the connecting portion 12b in the pipeline axial direction is formed to be longer than the thickness of the flange 2d in which the support surface 12k is in contact. The rotation of the split holding member 12 can be regulated by utilizing the total length in which the support surface 12k of the connecting portion 12b is in contact with the flange 2d. Further, by making the length of the support surface 12k of the connecting portion 12b straddle the flanges 2d and 4d, the tightening reaction force by the connecting member 17 can be supported more efficiently. At this time, the support surface 12k of the connecting portion 12b may be brought into contact with both the flanges 2d and 4d, or may be brought into contact with only the flange 4d.

次に、実施例２に係るフランジ補強具につき、図８及び図９を参照して説明する。尚、前記実施例と同一構成で重複する構成を省略する。 Next, the flange reinforcing tool according to the second embodiment will be described with reference to FIGS. 8 and 9. It should be noted that the same configuration as that of the above embodiment and the overlapping configuration will be omitted.

図８に示されるように、フランジ補強具２０は、両端にフランジを有する弁装置７の両フランジ７ａ、７ａに接合される管路構成部材としての流体管６、６の一対のフランジ６ａ、６ａを挟持する第１挟持部材２１及び第２挟持部材２４と、該第１挟持部材２１及び第２挟持部材２４を連結する複数の連結部材２７と、から主に構成される。 As shown in FIG. 8, the flange reinforcing tool 20 is a pair of flanges 6a, 6a of the fluid pipes 6, 6 as pipeline components joined to both flanges 7a, 7a of the valve device 7 having flanges at both ends. It is mainly composed of a first holding member 21 and a second holding member 24 for holding the first holding member 21 and a plurality of connecting members 27 for connecting the first holding member 21 and the second holding member 24.

図９に示されるように、第１挟持部材２１は分割挟持部材２２、２３からなる２分割構造となっており、該分割挟持部材２２、２３は結合部材２８としてのボルト２８ａ、ナット２８ｂによって環状一体に構成される（図８参照）。以下、第１挟持部材２１及び第２挟持部材２４は同一構造を有するので、第１挟持部材２１について説明する。 As shown in FIG. 9, the first sandwiching member 21 has a two-split structure composed of the split sandwiching members 22 and 23, and the split sandwiching members 22 and 23 are annularly formed by bolts 28a and nuts 28b as coupling members 28. It is integrally configured (see FIG. 8). Hereinafter, since the first sandwiching member 21 and the second sandwiching member 24 have the same structure, the first sandwiching member 21 will be described.

実施例１においては、フランジ挟持する挟持部１２ａ、１２ａ、１３ａ、１３ａは、挟持鍔部１２ｃ、１２ｃ、１３ｃ、１３ｃの周方向の両側に設けられていたが、実施例２においては、分割挟持部材２２、２３の頂部と底部にそれぞれ１か所にフランジ面を押圧する挟持部２２ａ、２３ａが径方向内側を向くように形成されている。このように挟持部２２ａ、２３ａを配置することで、小口径のフランジであっても容易にフランジ補強具２０を取付けることができる。 In the first embodiment, the holding portions 12a, 12a, 13a, 13a for holding the flange are provided on both sides of the holding flange portions 12c, 12c, 13c, 13c in the circumferential direction, but in the second embodiment, the holding portions 12a, 12a, 13a, 13a are provided on both sides in the circumferential direction. The holding portions 22a and 23a that press the flange surfaces at one place on the top and the bottom of the members 22 and 23 are formed so as to face inward in the radial direction. By arranging the holding portions 22a and 23a in this way, the flange reinforcing tool 20 can be easily attached even to a flange having a small diameter.

なお、実施例１と同様に、実施例２においても、連結部材２７よって第１挟持部材２１と第２挟持部材２４とを締め付けたとき、流体管６、６のフランジ外周面に連結部２２ｂ、２３ｂが接触することによって、第１挟持部材１１と第２挟持部材１４がフランジ面に対する回転が規制され、第１挟持部材２１と第２挟持部材２４はフランジ面から浮き上がることなくフランジ面の押圧状態を維持することができる。 Similar to the first embodiment, in the second embodiment as well, when the first sandwiching member 21 and the second sandwiching member 24 are tightened by the connecting member 27, the connecting portion 22b, on the outer peripheral surface of the flange of the fluid pipes 6 and 6, When the 23b comes into contact with each other, the rotation of the first holding member 11 and the second holding member 14 with respect to the flange surface is restricted, and the first holding member 21 and the second holding member 24 are in a pressed state of the flange surface without being lifted from the flange surface. Can be maintained.

次に、実施例３に係るフランジ補強具につき、図１０及び図１１を参照して説明する。尚、前記実施例と同一構成で重複する構成を省略する。 Next, the flange reinforcing tool according to the third embodiment will be described with reference to FIGS. 10 and 11. It should be noted that the same configuration as that of the above embodiment and the overlapping configuration will be omitted.

図１０に示されるように、フランジ補強具３１は、両端にフランジを有する弁装置７の両フランジ７ａ、７ａに接合される管路構成部材としての流体管６、６の一対のフランジ６ａ、６ａを挟持する第１挟持部材３２及び第２挟持部材３３と、該第１挟持部材３２及び第２挟持部材３３を連結する連結部材３７と、から主に構成され、フランジ周方向に所定個数のフランジ補強具３１、３１’を配設してフランジ接合を補強することができる。弁装置７や流体管６の近傍に障害物があるため、実施例１のフランジ補強具１０や実施例２のフランジ補強具２０を取付けることができない場合でも、フランジ補強具３１は弁装置７、流体管６のフランジ６ａの周囲に配置することができ、流体管６のフランジ６ａを挟持することができる。なお、図１０において、弁装置７の両フランジ７ａ、７ａと一対のフランジ６ａ、６ａとを締結する締結部材の図示を省略している。 As shown in FIG. 10, the flange reinforcing tool 31 is a pair of flanges 6a, 6a of fluid pipes 6, 6 as pipeline components joined to both flanges 7a, 7a of a valve device 7 having flanges at both ends. It is mainly composed of a first holding member 32 and a second holding member 33 for holding the first holding member 32 and a connecting member 37 for connecting the first holding member 32 and the second holding member 33, and a predetermined number of flanges in the flange circumferential direction. Reinforcing tools 31, 31'can be arranged to reinforce the flange joint. Even if the flange reinforcing tool 10 of the first embodiment or the flange reinforcing tool 20 of the second embodiment cannot be attached due to an obstacle in the vicinity of the valve device 7 or the fluid pipe 6, the flange reinforcing tool 31 can be attached to the valve device 7, It can be arranged around the flange 6a of the fluid pipe 6 and can sandwich the flange 6a of the fluid pipe 6. In FIG. 10, the fastening member for fastening both flanges 7a and 7a of the valve device 7 and the pair of flanges 6a and 6a is not shown.

図１１に示されるように、第１挟持部材３２及び第２挟持部材３３は、周方向に所定幅で延設された連結部３２ｂ、３３ｂを有し、該連結部３２ｂ、３３ｂには流体管６のフランジ６ａの外周面に接触可能な支持面３２ｋ、３３ｋが形成されている。また、連結部３２ｂ、３３ｂに直交するように挟持部３２ａ、３３ａが延設され、該挟持部３２ａ、３３ａは流体管６のフランジ６ａを押圧する押圧面３２ｊ、３３ｊを有する。 As shown in FIG. 11, the first sandwiching member 32 and the second sandwiching member 33 have connecting portions 32b and 33b extending in the circumferential direction with a predetermined width, and the connecting portions 32b and 33b have fluid pipes. Support surfaces 32k and 33k that can come into contact with the outer peripheral surface of the flange 6a of No. 6 are formed. Further, the sandwiching portions 32a and 33a are extended so as to be orthogonal to the connecting portions 32b and 33b, and the sandwiching portions 32a and 33a have pressing surfaces 32j and 33j for pressing the flange 6a of the fluid pipe 6.

なお、実施例３においても、第１挟持部材３２の押圧面３２ｊ及び第２挟持部材３３の押圧面３３ｊをフランジ６ａ、６ａに当接させ連結部材３７よって、第１挟持部材３２と第２挟持部材３３とを締め付けたとき、フランジ６ａ、６ａの外周面に連結部３２ｂ、３３ｂが接触することによって、第１挟持部材３２の押圧面３２ｊ及び第２挟持部材３３の押圧面３３ｊのフランジ６ａ、６ａに対する回転が規制され、押圧面３２ｊ及び押圧面３３ｊはフランジ６ａ、６ａから浮き上がることなくフランジ面の押圧状態を維持することができる。 Also in the third embodiment, the pressing surface 32j of the first sandwiching member 32 and the pressing surface 33j of the second sandwiching member 33 are brought into contact with the flanges 6a and 6a, and the first sandwiching member 32 and the second sandwiching member 32 are held by the connecting member 37. When the member 33 is tightened, the connecting portions 32b and 33b come into contact with the outer peripheral surfaces of the flanges 6a and 6a, so that the flange 6a of the pressing surface 32j of the first holding member 32 and the pressing surface 33j of the second holding member 33, The rotation with respect to 6a is restricted, and the pressing surface 32j and the pressing surface 33j can maintain the pressing state of the flange surface without rising from the flanges 6a and 6a.

次に、実施例４に係るフランジ補強具につき、図１２から図１５を参照して説明する。尚、前記実施例と同一構成で重複する構成を省略する。 Next, the flange reinforcing tool according to the fourth embodiment will be described with reference to FIGS. 12 to 15. It should be noted that the same configuration as that of the above embodiment and the overlapping configuration will be omitted.

図１２に示されるように、フランジ補強具４０は、補修弁のフランジ４ｄに接合される消火栓２のフランジ２ｄ、及び補修弁のフランジ４ｃに接合される流体管３のフランジ３ｃを挟持する第１挟持部材４１及び第２挟持部材５１と、該第１挟持部材４１及び第２挟持部材５１を連結する複数の連結部材４７と、から主に構成される。第１挟持部材４１を消火栓２のフランジ２ｄに当接させ、第２挟持部材５１を流体管３のフランジ３ｃに当接させて、連結部材４７を締め込むことにより、フランジ接合を補強することができる。 As shown in FIG. 12, the flange reinforcing tool 40 sandwiches the flange 2d of the fire hydrant 2 joined to the flange 4d of the repair valve and the flange 3c of the fluid pipe 3 joined to the flange 4c of the repair valve. It is mainly composed of a holding member 41 and a second holding member 51, and a plurality of connecting members 47 for connecting the first holding member 41 and the second holding member 51. The flange joint can be reinforced by bringing the first holding member 41 into contact with the flange 2d of the fire hydrant 2, bringing the second holding member 51 into contact with the flange 3c of the fluid pipe 3, and tightening the connecting member 47. it can.

実施例１及び２における第１挟持部材、第２挟持部材の分割の態様は略同一であるが、実施例４おけるフランジ補強具４０においては、消火栓、補修弁の形状や周囲の構造物の状況により第１挟持部材４１、第２挟持部材５１の分割の態様を変えることができる。 The mode of division of the first holding member and the second holding member in Examples 1 and 2 is substantially the same, but in the flange reinforcing tool 40 in Example 4, the shape of the fire hydrant and the repair valve and the state of the surrounding structure Therefore, the mode of division of the first holding member 41 and the second holding member 51 can be changed.

図１３に示されるように、第１挟持部材４１は分割挟持部材４２、４３からなる２分割構造となっている。分割挟持部材４２の一方の端部には、挿通孔４２ｄｈを有する突出部４２ｄ、４２ｄ’が管路軸方向に離間して形成され、分割挟持部材４２の他方の端部にはネジ孔４２ｅｂを有する突出部４２ｅが形成される。また、分割挟持部材４３の一方の端部には、ネジ孔４３ｅｂを有する突出部４３ｅが形成され、分割挟持部材４３の他方の端部には、挿通孔４３ｄｈを有する突出部４３ｄ、４３ｄ’が管路軸方向に離間して形成されている。そして、突出部４２ｄ、４２ｄ’と突出部４３ｅを係合させ、突出部４３ｄ、４３ｄ’と突出部４２ｅとを係合させて、結合部材４８を消火栓２の管路軸方向に取付け環状に一体化して、消化栓２のフランジ２ｄに外嵌することができる。 As shown in FIG. 13, the first sandwiching member 41 has a two-split structure including the split sandwiching members 42 and 43. Protruding portions 42d and 42d' having insertion holes 42dh are formed at one end of the split holding member 42 so as to be separated from each other in the pipeline axial direction, and screw holes 42eb are formed at the other end of the split holding member 42. The protruding portion 42e to have is formed. Further, a protrusion 43e having a screw hole 43eb is formed at one end of the split holding member 43, and protrusions 43d and 43d'having an insertion hole 43dh are formed at the other end of the split holding member 43. It is formed so as to be separated in the direction of the pipeline axis. Then, the protrusions 42d, 42d'and the protrusions 43e are engaged with each other, and the protrusions 43d, 43d'and the protrusions 42e are engaged with each other, and the coupling member 48 is attached in the direction of the conduit axis of the fire hydrant 2 and integrated in an annular shape. It can be externally fitted to the flange 2d of the fire hydrant 2.

これに対し、図１４に示されるように、第２挟持部材５１は分割挟持部材５２、５３からなる２分割構造となっており、分割挟持部材５２の一方の端部には挿通孔を有する突出部５２ｄが形成され、分割挟持部材５２の他方の端部にはネジ孔を有する端部５２ｅが形成されている。また、分割挟持部材５３の一方の端部にはネジ孔５３ｅｂを有する端部５３ｅが形成され、分割挟持部材５３の他方の端部には挿通孔５３ｄｈを有する突出部５３ｄが形成されている。そして、分割挟持部材５２の突出部５２ｄ及び分割挟持部材５３の突出部５３ｄを分割挟持部材５３の端部５３ｅ及び分割挟持部材５２の端部５２ｅに外嵌して、結合部材５８を管路径方向に取付けることによって環状に一体化することができる。 On the other hand, as shown in FIG. 14, the second sandwiching member 51 has a two-split structure composed of the split sandwiching members 52 and 53, and a protrusion having an insertion hole at one end of the split sandwiching member 52. A portion 52d is formed, and an end portion 52e having a screw hole is formed at the other end portion of the split holding member 52. Further, an end portion 53e having a screw hole 53eb is formed at one end of the split sandwiching member 53, and a protruding portion 53d having an insertion hole 53dh is formed at the other end of the split sandwiching member 53. Then, the protruding portion 52d of the split sandwiching member 52 and the protruding portion 53d of the split sandwiching member 53 are fitted onto the end portion 53e of the split sandwiching member 53 and the end portion 52e of the split sandwiching member 52, and the connecting member 58 is fitted in the conduit radial direction. It can be integrated in a ring shape by attaching to.

このように結合部材４８、５８の取付け態様を変えることで、消火栓２の管路軸方向に障害物があっても第１挟持部材４１の結合部材４８は障害物に沿って取付け取外しすることができ、同じく、消火栓２の径方向に別の障害物があっても第２挟持部材５１の結合部材５８は別の障害物に沿って取付け取外しすることができるので、障害物の状況に応じて、フランジ補強具４１、５１を選択して容易に取付けることができる（図１５参照）。 By changing the mounting mode of the coupling members 48 and 58 in this way, even if there is an obstacle in the axial direction of the conduit of the fire hydrant 2, the coupling member 48 of the first holding member 41 can be mounted and removed along the obstacle. Similarly, even if there is another obstacle in the radial direction of the fire hydrant 2, the connecting member 58 of the second holding member 51 can be attached and detached along the other obstacle, so that it can be attached and detached according to the situation of the obstacle. , Flange reinforcements 41 and 51 can be selected and easily attached (see FIG. 15).

なお、図１２に示されるように、実施例４においても、連結部材４７よって第１挟持部材４１と第２挟持部材５１とを締め付けたとき、第１挟持部材４１の連結部４２ｂ、４３ｂの支持面４２ｋ、４３ｋ（図１３参照）及び第２挟持部材５１の連結部５２ｂ、５３ｂの支持面５２ｋ、５３ｋが、消火栓２のフランジ２ｄの外周面及び流体管３のフランジ３ｃの外周面に接触することによって、第１挟持部材４１と第２挟持部材５１がフランジ２ｄ及びフランジ３ｃに対する回転が規制され、第１挟持部材４１と第２挟持部材５１はフランジ２ｄ及びフランジ３ｃから浮き上がることなくフランジ面の押圧状態を維持することができる。 As shown in FIG. 12, also in the fourth embodiment, when the first holding member 41 and the second holding member 51 are tightened by the connecting member 47, the connecting portions 42b and 43b of the first holding member 41 are supported. The surfaces 42k and 43k (see FIG. 13) and the support surfaces 52k and 53k of the connecting portions 52b and 53b of the second holding member 51 come into contact with the outer peripheral surface of the flange 2d of the fire hydrant 2 and the outer peripheral surface of the flange 3c of the fluid pipe 3. As a result, the rotation of the first holding member 41 and the second holding member 51 with respect to the flange 2d and the flange 3c is restricted, and the first holding member 41 and the second holding member 51 do not float from the flange 2d and the flange 3c on the flange surface. The pressed state can be maintained.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。 Although examples of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these examples, and any changes or additions within the scope of the gist of the present invention are included in the present invention. Is done.

例えば、上記実施例における弁装置は、バタフライ弁、切換弁、ボールバルブ、プラグなどでもよい。また、上記実施例におけるフランジ形状は円形であるが、だ円形、小判形、矩形等であってもよい。 For example, the valve device in the above embodiment may be a butterfly valve, a switching valve, a ball valve, a plug, or the like. The flange shape in the above embodiment is circular, but may be oval, oval, rectangular, or the like.

２消火栓（管路構成部材）
２ｄフランジ
３流体管（管路構成部材）
３ｃ分岐部フランジ（フランジ）
４補修弁（弁装置）
４ｃフランジ
４ｄフランジ
６流体管（管路構成部材）
６ａフランジ
７弁装置
７ａフランジ
７ｂフランジ
１０フランジ補強具
１１第１挟持部材（挟持部材）
１２分割挟持部材
１２ｂ連結部（鍔部）
１２ｊ当接面
１３分割挟持部材
１３ｂ連結部（鍔部）
１３ｊ当接面
１４第２挟持部材（挟持部材）
１５分割挟持部材
１５ｂ連結部（鍔部）
１５ｊ当接面
１６分割挟持部材
１７連結部材
１８結合部材
２０フランジ補強具
２１第１挟持部材（挟持部材）
２２分割挟持部材
２２ｂ連結部（鍔部）
２３分割挟持部材
２３ｂ連結部（鍔部）
２３ｊ当接面
２４第２挟持部材（挟持部材）
２７連結部材
２８結合部材
３１フランジ補強具
３２第１挟持部材（挟持部材）
３２ｂ連結部（鍔部）
３２ｊ当接面
３３第２挟持部材（挟持部材）
３３ｂ連結部（鍔部）
３３ｊ当接面
３７連結部材
４０フランジ補強具
４１第１挟持部材（挟持部材）
４２分割挟持部材
４２ｂ連結部（鍔部）
４２ｊ当接面
４３分割挟持部材
４３ｂ連結部（鍔部）
４７連結部材
４８結合部材
５１第２挟持部材（挟持部材）
５２分割挟持部材
５２ｂ連結部（鍔部）
５３分割挟持部材
５３ｂ連結部（鍔部）
５３ｊ当接面
５８結合部材 2 Fire hydrant (pipeline component)
2d Flange 3 Fluid pipe (pipeline component)
3c Branch flange (flange)
4 Repair valve (valve gear)
4c Flange 4d Flange 6 Fluid pipe (pipeline component)
6a Flange 7 Valve device 7a Flange 7b Flange 10 Flange reinforcing tool 11 First sandwiching member (pinching member)
12 Divided holding member 12b Connecting part (flange part)
12j Contact surface 13 Divided holding member 13b Connecting part (flange part)
13j Contact surface 14 Second holding member (holding member)
15 Divided holding member 15b Connecting part (flange part)
15j Contact surface 16 Divided holding member 17 Connecting member 18 Connecting member 20 Flange reinforcing tool 21 First holding member (holding member)
22 Divided holding member 22b Connecting part (flange part)
23 Divided holding member 23b Connecting part (flange part)
23j Contact surface 24 Second holding member (holding member)
27 Connecting member 28 Connecting member 31 Flange reinforcing tool 32 First holding member (holding member)
32b Connecting part (flange part)
32j Contact surface 33 Second holding member (holding member)
33b Connecting part (flange part)
33j Contact surface 37 Connecting member 40 Flange reinforcing tool 41 First holding member (holding member)
42 Divided holding member 42b Connecting part (flange part)
42j Contact surface 43 Divided holding member 43b Connecting part (flange part)
47 Connecting member 48 Connecting member 51 Second sandwiching member (pinching member)
52 Divided holding member 52b Connecting part (flange part)
53 Divided holding member 53b Connecting part (flange part)
53j contact surface 58 coupling member

Claims

Both flanges of the pipeline constituent members, which are joined to both flanges of the valve device having flanges at both ends by a plurality of fastening members, are sandwiched by a pair of sandwiching members.
A flange reinforcing tool for reinforcing a flange joint by connecting the pair of holding members with a connecting member.
At least one of the pair of holding members has a contact surface that abuts on a flange surface in the pipeline axial direction of the pipeline constituent member.
A flange portion that can come into contact with at least one of the outer peripheral surface of the flange or the outer peripheral surface of the flange of the valve device joined to the flange is formed.
A flange reinforcing tool characterized in that the contact surface abuts between the plurality of fastening members.

The valve device is a repair valve, and both flanges of the pipeline constituent member are a flange provided at a branch neck portion extending in the vertical direction of a fluid pipe which is one pipeline constituent member, and the other pipeline constituent member. The flange reinforcing tool according to claim 1, wherein the flange is a flange of the above.

The flange reinforcing tool according to claim 1 or 2, wherein the contact surface is provided as a member separate from the flange portion.

The flange reinforcing tool according to claim 1 or 2, wherein the contact surface is formed integrally with the flange portion.