JP6672504B2

JP6672504B2 - Flange reinforcement

Info

Publication number: JP6672504B2
Application number: JP2019069704A
Authority: JP
Inventors: 星野　洋一郎; 洋一郎星野; 悟武田
Original assignee: Cosmo Koki Co Ltd
Current assignee: Cosmo Koki Co Ltd
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2020-03-25
Anticipated expiration: 2035-03-24
Also published as: JP2019148337A

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。 According to the present invention, both flanges of a conduit component 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. The present invention relates to a flange reinforcing tool for reinforcing.

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）。 The conventional flange joint structure (flange reinforcing member) is a flange in a pipe axial direction of a flange of an existing pipe (pipe constituent member) that is respectively connected to both flanges of a shutoff valve (valve device) having flanges at both ends. A pair of backing plates (sandwich members) that contact the surface are connected by a connecting rod (connecting member) to reinforce the flange joint (for example, see 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 Literature 1, when a pair of contact plates abutting against the flange surfaces of the existing pipelines respectively joined to both flanges of the shut-off valve are tightened by the connecting rod, the contact plate is installed. Since a rotating force is generated with the outer peripheral edge of the flange of the conduit as a fulcrum, there is a problem that the backing plate rises 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。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a flange reinforcing member that can prevent a holding member from floating from a flange surface and maintain a pressed state of the flange surface when a pair of holding members are connected by a 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 device of the present invention is:
Flange reinforcement that clamps both flanges of a conduit component joined to both flanges of a valve device having flanges at both ends with a pair of clamping members, and connects the pair of clamping members with a coupling member to reinforce flange joining. Tool,
At least one of the pair of holding members is a contact surface that abuts on a flange surface of the pipeline component in the axial direction of the pipeline, and an outer peripheral surface of the flange or an outer circumference of a flange of the valve device that is joined to the flange. It is characterized in that a flange that can contact at least one of the surfaces is integrally formed.
According to this feature, when the pair of holding members are connected by the connecting member, the flange portion of the holding member comes into contact with the pipe line constituting member or the outer peripheral surface of the flange of the valve device, and the holding member rotates with respect to the flange surface. Therefore, the holding member can maintain the pressed state of the flange surface without being lifted 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 device of the present invention,
The length of the flange portion in the direction of the pipe axis is formed to be longer than the thickness of the flange of the pipe component that the flange portion contacts.
According to this feature, since the rotation of the holding member can be regulated by utilizing the entire length of the flange thickness with which the flange contacts, the holding member can maintain the contact state with the flange surface without being lifted 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 device of the present invention,
The flange portion is in contact with at least one of an outer peripheral surface of the flange and an outer peripheral surface of a flange of the valve device joined to the flange.
According to this feature, the flange 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 coupling force by the coupling member. In addition, the holding member can maintain the contact state with the flange surface almost without rotating.

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 device of the present invention,
The flange portion is provided to extend at least in an arc in a circumferential direction of a flange of the conduit member.
According to this feature, since the flange is extended in an arc shape in the circumferential direction of the flange of the conduit member, the rigidity of the flange 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 device of the present invention,
The holding member has a divided structure that can be opened and closed with one end serving as a fulcrum.
According to this feature, it is possible to assemble the holding member by easily bringing the flange portion of the holding member into contact with the outer peripheral surface of the flange by using a split structure that can be opened and closed with one end serving 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 member according to the first embodiment is attached to the valve device and the conduit member, and (b) is a side view showing the valve device and the conduit member to which the flange reinforcing member is attached. FIG. （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 cross-sectional view taken along the line AA of (a), (c) is a cross-sectional view taken along the line BB of (a), and (d) is a cross-sectional view. It is CC sectional drawing 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。2A is a view taken in the direction of the arrow DD in FIG. 2A, FIG. 2B is a view taken in the direction of the arrow F in FIG. 2A, and 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 top view which shows the state which clamped the holding member of the flange reinforcement with the coupling member, (b) is a figure which shows the state opened by using one of the holding members as a fulcrum. （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 a flange reinforcement, (b) is a front view of a flange reinforcement. （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 top view which shows attachment to a flange by opening a flange reinforcement, and (b) is a side view which shows the state which attached the flange reinforcement. （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 figure which shows the situation when the connection member of the flange reinforcement is tightened, (b) is a figure which shows the situation when the connection member of the conventional flange reinforcement 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 which shows the state which attached the flange reinforcement in Example 2 to the valve apparatus and the pipeline component, and (b) is the front view which shows the state which attached the flange reinforcement. （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 top view of the holding member of the flange reinforcement in Example 2, (b) is GG sectional drawing of (a), (c) is HH sectional view 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 which shows the state which attached the flange reinforcement in Example 3 to the valve apparatus and the pipeline component, and (b) is the front view which shows the state which attached the flange reinforcement. 実施例３におけるフランジ補強具を示す図である。FIG. 13 is a diagram illustrating a flange reinforcing tool according to a third embodiment. 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。FIG. 10 is a view showing a state in which the flange reinforcing tool according to the fourth embodiment is attached to a valve device and a conduit component. （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 top view of one holding member of the flange reinforcing tool in Example 4, (b) is the II arrow view 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 Example 4, (b) is a plan view of the disassembled state of the holding member, and (c) is a view taken along the arrow JJ of (b). FIG. （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 top view of the flange reinforcement in Example 4, (b) is a side view, (c) is a front view of one holding member.

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。 A flange reinforcing tool according to the present invention will be described with reference to FIGS.

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, a flange 4c of the repair valve 4 is connected to a branch flange 3c provided on a branch neck 3b of the fluid pipe 3, and a flange 2d of the fire hydrant 2 is connected to a 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 joined 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. In addition, the fluid pipe 3 and the fire hydrant 2 correspond to a pipe component 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 pipe component according to the present invention. . In FIG. 1, the vertical direction corresponds to the pipeline axis 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 has an inner peripheral surface covered with a mortar layer. Have been. The fluid pipe according to the present invention may be made of other metal such as cast iron or steel, or made of asbestos, concrete, vinyl chloride, polyethylene or polyolefin. Further, 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 the like, or an appropriate material may be coated on the inner peripheral surface of the fluid pipe by powder coating. In the present embodiment, the fluid in the fluid pipe is clean water, but is not limited to clean water in the present embodiment. For example, in addition to industrial water, agricultural water, sewage, etc., a gas or a gas-liquid mixture of gas and liquid It does not 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 device 10 includes a first holding member 11 for holding the flange 2 d of the fire hydrant 2 in the pipe axis direction and a branch flange 3 c of the fluid pipe 3 in the pipe axis direction. , A connecting member 17 for connecting the first holding member 11 and the second holding member 14, and the first holding member 11 and the second holding member 14 are integrally connected to form an annular shape. And a coupling 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, only 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 holding member 11 is composed of divided holding members 12, 13 divided in the circumferential direction, and the divided holding members 12, 13 are connected by a connecting member 18 (see FIG. 1A). They are joined together in a ring. In the present embodiment, the first holding member 11 is divided into two parts. However, the present invention is not limited to this. 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 holding member 12 constituting the first holding member 11 is formed of two projecting portions, and the holding portions 12a, 12a for holding the flange 2d of the fire hydrant 2 in the pipe axis direction face radially inward. The holding flanges 12c, 12c are formed so as to face radially outward at circumferential positions corresponding to the holding portions 12a, 12a. The holding portions 12a, 12a and the holding flange portions 12c, 12c are integrally formed by a connecting portion 12b extending in an arc shape along the outer periphery of the flange 2d of the fire hydrant 2, and the rigidity of the divided holding member 12 itself is improved. Improvements are being made. In this case, as long as the rigidity is maintained, the holding portions 12a, 12a and the holding flange portions 12c, 12c may be assembled as a separate member to be integrated. Further, a pair of protrusions 12d and 12e are formed on the circumferential end of the connecting portion 12b in the radial direction outside in opposite directions to each other, and an insertion hole 12h for inserting the coupling member 18 into the protrusions 12d and 12e. , 12h (see FIG. 3A). Further, elliptical insertion holes 12ch, 12ch are formed in the holding flange portions 12c, 12c, and bolts 17a having an elliptical head are inserted into the elliptical insertion holes 12ch, 12ch. The bolt 17a is prevented from rotating by the elliptical head. The shapes of the insertion holes 12ch are not limited to ellipses, but 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 holding member 13 constituting the first holding member 11 includes two projecting portions, and holding portions 13a, 13a for holding the flange 2d of the fire hydrant 2 in the pipe axis direction are radially inward. Are formed so as to face each other, and holding flange portions 13c, 13c are formed so as to face radially outward at circumferential positions corresponding to the holding portions 13a, 13a. The holding portions 13a, 13a and the holding flange portions 13c, 13c are integrally formed by a connecting portion 13b extending in an arc shape along the outer periphery of the flange 2d of the fire hydrant 2, and the rigidity of the divided holding member 13 itself is improved. Improvements are being made. In this case, as long as the rigidity is maintained, the holding portions 13a, 13a and the holding flange portions 13c, 13c may be assembled as a separate member to be integrated. Further, a pair of protrusions 13d, 13e are formed on the circumferential end of the connecting portion 13b in a direction opposite to each other on the radially outer side, and through the protrusions 13d, 13e, insertion holes 13h, 13h through which the coupling member 18 is inserted. (See FIG. 3B). Further, elliptical insertion holes 13ch, 13ch are formed in the holding flange portions 13c, 13c, and bolts 17a having an elliptical head are inserted into the elliptical insertion holes 13ch, 13ch. The bolt 17a is prevented from rotating by the elliptical head. The shape of the insertion holes 13ch is not limited to an ellipse, but 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）。 As will be described later, the reaction force generated when the first holding member 11 (divided holding member 12) and the second holding member 14 (divided holding member 15) are tightened by the connecting member 17 is reduced by the supporting surface of the connecting portion 12b. 12k, the supporting surface 13k of the connecting portion 13b is configured to be able to be supported by contacting the outer peripheral surface of the flange 2d of the fire hydrant 2, and the connecting portions 12b, 13b function as a 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 projecting portion 12d of the divided sandwiching member 12 is formed in an arc shape so as to taper outward in the radial direction (see FIG. 2A), and furthermore, the projecting portion 12d has a groove 12f (FIG. 3C). ) Is formed. On the other hand, the protruding portion 13e of the divided holding member 13 facing the protruding portion 12d of the divided holding member 12 is also formed in an arc shape so as to taper outward in the radial direction (see FIG. 2A). A protrusion 13g (see FIG. 3C) is formed in the portion 13e. Similarly, a projecting portion 12e at the circumferential end of the divided holding member 12 is formed in an arc shape so as to taper outward in the radial direction, and a projecting portion 12g is formed on the projecting portion 12e (FIG. 2). (See (a)), the projection 13d at the circumferential end of the divided clamping member 13 facing the projection 12e of the divided clamping member 12 is also formed in an arc shape so as to taper outward in the radial direction. A groove 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 divided holding members 12 and 13 have the above-described configuration, the groove 12 f of the divided holding member 12 and the protruding portion 13 g of the divided holding member 13, and the protruding portion 12 g of the divided holding member 12 and the divided holding portion 13 Since the grooves 13f engage with each other in an uneven manner, they can be easily assembled in a ring shape (see FIG. 2A). Then, the bolt 18a is inserted into the insertion holes 12h, 12h, 13h, and 13h (see FIGS. 3A and 3B), and the bolt 18a and the nut 18b can be easily and integrally assembled into an annular shape (FIG. 4). (A)). Further, the insertion holes 12h, 12h, 13h, and 13h are formed in an elliptical shape, and bolts 18a having an oval head are inserted into the insertion holes 12h, 12h, 13h, and 13h. The bolt 18a is prevented from rotating by the head. The insertion holes 12h, 12h, 13h, and 13h are not limited to elliptical shapes, but may be other shapes such as a circle, a rectangle, 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. 4 (b), in a state where the connection state of the bolt 18a and the nut 18b of one connecting member 18 is loosened and the other connecting member 18 is removed, the projecting portion 12e of the divided holding member 12 is removed. The arc-shaped protruding portion 12g and the arc-shaped groove 13f of the protruding portion 13d of the divided holding member 13 are rolled with each other so that one of the circumferential ends of the divided holding members 12 and 13 is closed. Since the other can be opened, even the divided holding members 12 and 13 that are divided 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 an elastic body are disposed 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 provided. Dimensional variations can be absorbed. This is particularly effective when the rust of the flange of the existing fluid pipe is severe.

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 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 holding member 11 and the second holding member 14 are opposed to each other at a predetermined interval, and are connected by the connection 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 where one of the connecting members 18 is attached as a fulcrum, and the flange 2d and the branch 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 integrated into a ring shape. Finally, the coupling member 17 is tightened, and the first holding member 11 and the second holding member hold the branch portion flange 3c, the repair valve 4, and the flange 2d of the fire hydrant 2. 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。 In addition, the first holding member 11 and the second holding member 14 may be attached as follows without opening the first holding member 11 and the second holding member 14 on the side where the one connecting member 18 is attached. That is, the first holding member 11 and the second holding member 14 are opposed to each other at a predetermined interval, and are connected by the connecting member 17. Then, the connecting members 18, 18 for fastening the first holding member 11 and the second holding member 14 are loosened to such an extent that they can pass through the outer diameters of the flange 2d of the fire hydrant 2 and the branch portion flange 3c, and the first holding member 11 After being attached to the flange 2d and the branch flange 3c of the fire hydrant 2 in a state where the and the second holding member 14 are integrated, the connecting members 18, 18, ... may be integrated by tightening.

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 attaching the first holding member 11 to the flange 2d of the fire hydrant 2 and attaching the second holding member 14 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 reinforcement 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 clamped by the first clamping member 11 and the second clamping 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 holding members 12 of the first holding member 11 abuts on the flange surface of the flange 2d in the pipe axis direction, and one of the second holding members 14 is provided. The pressing surface 15j of the divided holding member 15 is in contact with the pipe surface axial flange surface of the branch portion flange 3c. A support surface 12k of the connecting portion 12b of the divided holding member 12 is opposed to an outer peripheral surface of the flange 2d, and a supporting surface 15k of a connecting portion 15b of the divided holding member 15 is opposed to the outer peripheral surface of the branch portion flange 3c. Have been. When the connecting member 17 is tightened in this state, the divided holding members 12 and 15 generate a rotational force with the outer peripheral edges of the flanges 2d and 3c as fulcrums, and the support surface 12k of the divided holding member 12 and the support of the divided holding member 15 are supported. The surface 15k can be prevented from coming into contact with the outer peripheral surface of the flange, and the pressing surface 12j of the holding portion 12a of the divided holding member 12 and the pressing surface 15j of the holding portion 15a of the divided holding member 15 can be prevented from rising from the flange surface. The pressing 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 are held by the conventional split holding member 72 and the conventional split holding member 75 which are formed in a plate shape without providing the connecting portion. In this case, due to the fastening of the connecting member 77, the divided holding member 72 rotates about 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 pipe axis direction, and 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 pipe axis direction is formed longer than the thickness of the flange 2d with which the support surface 12k contacts. The rotation of the divided holding member 12 can be restricted by utilizing the entire length of the support surface 12k of the connecting portion 12b in contact with the flange 2d. Further, by setting the length of the support surface 12k of the connecting portion 12b to span the flanges 2d and 4d, the tightening reaction force by the connecting member 17 can be more efficiently supported. At this time, the support surface 12k of the connecting portion 12b may be in contact with both the flanges 2d and 4d, or may be in 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, a flange reinforcing tool according to a second embodiment will be described with reference to FIGS. It should be noted that the same configuration as that of the above-described embodiment is 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 member 20 includes a pair of flanges 6 a, 6 a of the fluid pipes 6, 6 as pipe constituent members joined to the two flanges 7 a, 7 a of the valve device 7 having flanges at both ends. And a plurality of connecting members 27 connecting the first holding member 21 and the second holding member 24 to each other.

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 holding member 21 has a two-part structure including divided holding members 22 and 23, and the divided holding members 22 and 23 are annularly formed by bolts 28 a and nuts 28 b as connecting members 28. It is integrated (see FIG. 8). Hereinafter, since the first holding member 21 and the second holding member 24 have the same structure, the first holding 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, and 13a for holding the flanges are provided on both sides in the circumferential direction of the holding flange portions 12c, 12c, 13c, and 13c. Nipping portions 22a and 23a for pressing the flange surface are formed at the top and bottom portions of the members 22 and 23 respectively at one place so as to face radially inward. By arranging the holding portions 22a and 23a in this manner, the flange reinforcing member 20 can be easily attached to a small-diameter flange.

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。 As in the first embodiment, also in the second embodiment, when the first holding member 21 and the second holding member 24 are tightened by the connecting member 27, the connecting portions 22b, By the contact of 23b, the rotation of the first holding member 11 and the second holding member 14 with respect to the flange surface is regulated, and the first holding member 21 and the second holding member 24 are pressed against the flange surface without floating 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, a flange reinforcing tool according to a third embodiment will be described with reference to FIGS. It should be noted that the same configuration as that of the above-described embodiment is 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, a pair of flanges 6 a, 6 a of fluid pipes 6, 6 as pipe constituent members joined to both flanges 7 a, 7 a of the valve device 7 having flanges at both ends are provided. 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 circumferential direction of the flange. Reinforcements 31, 31 'can be provided to reinforce the flange joint. Even if the flange reinforcing member 10 of the first embodiment or the flange reinforcing member 20 of the second embodiment cannot be attached because there is an obstacle near the valve device 7 and the fluid pipe 6, the flange reinforcing member 31 is not used. It can be arranged around the flange 6a of the fluid pipe 6, and can clamp the flange 6a of the fluid pipe 6. In FIG. 10, the illustration of a fastening member for fastening the two flanges 7a, 7a of the valve device 7 and the pair of flanges 6a, 6a is omitted.

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 holding member 32 and the second holding member 33 have connecting portions 32b and 33b extending at a predetermined width in the circumferential direction, and the connecting portions 32b and 33b have fluid pipes. Support surfaces 32k and 33k that can be in contact with the outer peripheral surface of the sixth flange 6a are formed. Further, holding portions 32a, 33a extend so as to be orthogonal to the connecting portions 32b, 33b, and the holding portions 32a, 33a have pressing surfaces 32j, 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。 In the third embodiment as well, the pressing surface 32j of the first holding member 32 and the pressing surface 33j of the second holding member 33 are brought into contact with the flanges 6a, 6a, and the first holding member 32 and the second holding When the member 33 is tightened, the connecting portions 32b, 33b come into contact with the outer peripheral surfaces of the flanges 6a, 6a, so that the pressing surface 32j of the first holding member 32 and the flange 6a of 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 floating from the flanges 6a, 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, a flange reinforcing tool according to a fourth embodiment will be described with reference to FIGS. It should be noted that the same configuration as that of the above-described embodiment is 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 holds the first flange 2d of the hydrant 2 joined to the flange 4d of the repair valve and the first flange 3c of the fluid pipe 3 joined to the flange 4c of the repair valve. It mainly includes 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. It is possible to reinforce the flange joint by bringing the first holding member 41 into contact with the flange 2d of the fire hydrant 2 and 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 manner of dividing the first holding member and the second holding member in the first and second embodiments is substantially the same. However, in the flange reinforcing member 40 in the fourth embodiment, the shape of the fire hydrant and the repair valve and the state of the surrounding structures are used. Thereby, 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 holding member 41 has a two-part structure including divided holding members 42 and 43. Protruding portions 42d and 42d 'having insertion holes 42dh are formed at one end of the divided sandwiching member 42 so as to be spaced apart from each other in the pipe axis direction, and a screw hole 42eb is formed at the other end of the divided sandwiching member 42. Is formed. A projection 43e having a screw hole 43eb is formed at one end of the divided clamping member 43, and projections 43d and 43d 'having an insertion hole 43dh are formed at the other end of the divided clamping member 43. They are formed spaced apart in the pipe axis direction. Then, the protrusions 42d, 42d 'and the protrusion 43e are engaged with each other, and the protrusions 43d, 43d' and the protrusion 42e are engaged with each other. And can be externally fitted to the flange 2d of the digestion plug 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 holding member 51 has a two-part structure including divided holding members 52 and 53, and one end of the divided holding member 52 has a projecting hole having an insertion hole. A portion 52d is formed, and an end 52e having a screw hole is formed at the other end of the divided holding member 52. An end 53e having a screw hole 53eb is formed at one end of the divided holding member 53, and a protruding portion 53d having an insertion hole 53dh is formed at the other end of the divided holding member 53. Then, the projection 52d of the divided clamping member 52 and the projection 53d of the divided clamping member 53 are externally fitted to the end 53e of the divided clamping member 53 and the end 52e of the divided clamping member 52, and the coupling member 58 is moved in the pipe radial direction. Can be integrated into a ring.

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 manner of the connecting members 48 and 58 in this manner, even if there is an obstacle in the pipe axis direction of the fire hydrant 2, the connecting member 48 of the first holding member 41 can be attached 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 another obstacle, so that according to the situation of the obstacle, And the flange reinforcing members 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 connection portions 42 b and 43 b 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 contact 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. Thereby, 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 regulated, and the first holding member 41 and the second holding member 51 are not lifted from the flange 2d and the flange 3c. 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。 As described above, the embodiments of the present invention have been described with reference to the drawings. However, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention, they are included in the present invention. It is.

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. Although the flange shape in the above embodiment is circular, it may be elliptical, 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 hydrants (conduit components)
2d flange 3 fluid pipe (conduit member)
3c Branch flange (flange)
4 Repair valve (valve device)
4c Flange 4d Flange 6 Fluid pipe (conduit member)
6a Flange 7 Valve device 7a Flange 7b Flange 10 Flange reinforcement 11 First clamping member (clamping member)
12 divided holding member 12b connecting part (flange part)
12j Contact surface 13 Split holding member 13b Connecting portion (flange)
13j Contact surface 14 Second holding member (holding member)
15 Split holding member 15b Connecting part (flange)
15j abutment surface 16 divided holding member 17 connecting member 18 connecting member 20 flange reinforcing member 21 first holding member (holding member)
22 divided holding member 22b connecting portion (flange)
23 divided holding member 23b connecting portion (flange portion)
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 connection part (flange part)
32j contact surface 33 second holding member (holding member)
33b connection part (flange part)
33j abutment surface 37 connecting member 40 flange reinforcing member 41 first holding member (holding member)
42 divided holding member 42b connecting portion (flange portion)
42j abutment surface 43 divided holding member 43b connecting portion (flange)
47 connecting member 48 connecting member 51 second holding member (holding member)
52 divided holding member 52b connecting portion (flange portion)
53 divided holding member 53b connecting part (flange part)
53j Contact surface 58 Coupling member

Claims

A pair of a flange provided on a vertically extending branch neck of a fluid pipe, which is one conduit component, and a flange of the other conduit component, which are respectively joined to both flanges of the repair valve having flanges at both ends. And a flange reinforcing member for reinforcing the flange joint by connecting the pair of holding members by a connecting member,
Each of the pair of sandwiching members has a contact surface that is in contact with a flange surface of the flange of the conduit member in the conduit axial direction, and an outer peripheral surface of the flange or a flange of the repair valve that is joined to the flange. A flange portion that contacts at least one of the outer peripheral surfaces is integrally formed, has a divided structure that is divided in a circumferential direction and is annularly coupled by a coupling member, and the coupling member is configured to be connected in the pipe axial direction. A flange reinforcing tool, which is detachably mounted in a pipe axis direction regardless of an obstacle.

The flange reinforcing device according to claim 1, wherein the flange portion extends in an arc shape in a circumferential direction.

The flange reinforcing device according to claim 1, wherein each of the pair of holding members has a protrusion having an insertion hole for attaching the coupling member.

Each of the pair of holding members, the flange portion, a plurality of extending along the circumferential direction so as to face radially outward than the flange portion, the holding flange portion for attaching the connecting member is integrally formed The flange reinforcing tool according to any one of claims 1 to 3, wherein the flange reinforcing tool is formed.