JP2010249259A - Rust preventing device - Google Patents

Rust preventing device Download PDF

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JP2010249259A
JP2010249259A JP2009100600A JP2009100600A JP2010249259A JP 2010249259 A JP2010249259 A JP 2010249259A JP 2009100600 A JP2009100600 A JP 2009100600A JP 2009100600 A JP2009100600 A JP 2009100600A JP 2010249259 A JP2010249259 A JP 2010249259A
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fluid pipe
existing fluid
rust
cover
cut surface
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JP5306890B2 (en
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Yoshinori Maeda
芳則 前田
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Cosmo Koki Co Ltd
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Cosmo Koki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a rust preventing device for inexpensively performing rust prevention of a cut end surface of an existing fluid pipe cut under an uninterrupted flow. <P>SOLUTION: The rust preventing device 7 includes a casing 2 sealing the existing fluid pipe 1, a valve element 3a opening and closing the upper part of the casing 2, a work case 4 connected to the casing 2 in a sealed state through the valve element 3, and an annular rust preventing cover 5 arranged in the work case 4. In the casing 2, the rust preventing cover 5 is made to abut and held on the cut surface 1a of the existing fluid pipe 1 cut under the uninterrupted flow, and thereby, the cut surface 1a is rust-prevented. An operation rod 8 has one end arranged in the work case 4 and the other end arranged above the outside of the work case 4, and is movable in a vertical direction of the work case 4 and the axial direction of the existing fluid pipe 1. The operation rod 8 has a holding part 8a for holding the rust preventing cover 5, and by operating the operation rod 8, the rust preventing cover 5 held by the holding part 8a is made to abut and held on the whole surface of the cut surface 1a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、筐体内において、不断流状態で切断された既設流体管の切断面に防錆カバーを当接保持させることで、切断面を防錆する防錆装置に関する。   The present invention relates to a rust preventive device that rusts a cut surface by holding a rust preventive cover in contact with a cut surface of an existing fluid pipe that has been cut in a continuous flow state in a casing.

従来、不断流状態で切断された既設流体管の切断残置管部の切断面に、防錆カバーを装着することによって切断面の防錆を行うカバー装着機としては、防錆カバーを保持するカバー保持部と、このカバー保持部を押圧するための第１流体圧シリンダと第２流体圧シリンダとを備えており、切断残置管部間に配置されたカバー装着機から第１流体圧シリンダと第２流体圧シリンダとによってカバー保持部を切断残置管部の切断端面に対して押圧し、切断残置管部の切断端面を防錆カバーの環状凹部に挿入させることで切断残置管部の切断端面の防錆を行っているものがある（例えば、特許文献１参照）。   Conventionally, as a cover mounting machine that protects the cut surface by attaching a rust-proof cover to the cut surface of the cutting remaining pipe portion of the existing fluid pipe that has been cut in an uninterrupted state, the rust-proof cover is held. A cover holding part, a first fluid pressure cylinder for pressing the cover holding part, and a second fluid pressure cylinder are provided, and the first fluid pressure cylinder is removed from the cover mounting machine disposed between the cutting remaining pipe parts. And the second fluid pressure cylinder press the cover holding portion against the cutting end surface of the cutting residual pipe portion, and insert the cutting end surface of the cutting residual pipe portion into the annular recess of the anticorrosion cover, thereby leaving the cutting residual pipe There are some which carry out rust prevention of the cut end face of a part (for example, refer to patent documents 1).

特開２００９−８１２０号公報（第１３頁、第９図）JP 2009-8120 A (page 13, FIG. 9)

しかしながら、特許文献１にあっては、切断残置管部の切断端面への防錆カバーの取り付けは、第１流体圧シリンダと第２流体圧シリンダとの押圧力によってなされるため、カバー装着機には第１流体圧シリンダと第２流体圧シリンダとを作動させるための比較的高価な機構が必要であり、より安価に切断残置管部の切断端面への防錆を行いたいという要望があった。   However, in Patent Document 1, the attachment of the rust-proof cover to the cut end surface of the remaining cutting pipe is performed by the pressing force of the first fluid pressure cylinder and the second fluid pressure cylinder. Requires a relatively expensive mechanism for operating the first fluid pressure cylinder and the second fluid pressure cylinder, and there is a demand for rust prevention on the cut end face of the remaining cutting pipe portion at a lower cost. there were.

本発明は、このような問題点に着目してなされたもので、不断流状態で切断された既設流体管の切断端面に対して、より安価に切断端面に防錆を行うことができる防錆装置を提供することを目的とする。   The present invention has been made by paying attention to such problems, and it is possible to rust-proof the cut end face at a lower cost than the cut end face of the existing fluid pipe cut in an uninterrupted flow state. An object is to provide an apparatus.

前記課題を解決するために、本発明の防錆装置は、
既設流体管を密封した筐体と、該筐体の上部を開閉可能とする弁体と、前記筐体に対して前記弁体を介して密封状に接続される作業ケースと、該作業ケース内に配置された環状の防錆カバーと、を備え、前記筐体内において、不断流状態で切断された前記既設流体管の切断面に前記防錆カバーを当接保持させることで、前記切断面を防錆する防錆装置であって、
一端が前記作業ケース内に、他端が該作業ケース外の上方にそれぞれ配置され、該作業ケースの上下方向及び前記既設流体管の軸方向に移動可能な操作棒を備え、
該操作棒は前記防錆カバーを保持する保持部を備え、
前記操作棒を操作することで、前記保持部で保持された前記防錆カバーを前記切断面の全面に当接保持させることを特徴としている。
この特徴によれば、作業ケース内で防錆カバーを保持した操作棒を既設流体管の切断面に向けて移動させることで切断面に防錆カバーを当接保持させることができるので、防錆カバーを既設流体管の切断面に対して特別な機構を用いずに安価に防錆を行うことができる。 In order to solve the above problems, the rust preventive device of the present invention is:
A case in which an existing fluid pipe is sealed; a valve body capable of opening and closing an upper portion of the case; a work case connected in a sealed manner to the case via the valve body; An annular rust-proof cover disposed in the casing, and in the housing, the rust-proof cover is brought into contact with and held by a cut surface of the existing fluid pipe cut in an uninterrupted flow state. A rust prevention device for preventing rust,
One end is disposed in the work case and the other end is disposed above and outside the work case, and includes an operation rod movable in the vertical direction of the work case and the axial direction of the existing fluid pipe,
The operation rod includes a holding portion for holding the antirust cover,
By operating the operation rod, the rust preventive cover held by the holding portion is brought into contact with and held on the entire cut surface.
According to this feature, the rust preventive cover can be held in contact with the cut surface by moving the operating rod holding the rust cover in the work case toward the cut surface of the existing fluid pipe. Rust prevention can be performed at low cost without using a special mechanism for the cut surface of the existing fluid pipe.

本発明の防錆装置は、
前記保持部は、前記操作棒に形成された、前記防錆カバーに螺合する螺合部を備えることを特徴としている。
この特徴によれば、操作棒を回動させることで螺合部の防錆カバーに対する螺合を容易に解除させることができるので、既設流体管の一方の切断面に防錆カバーを当接させた後に防錆カバーから操作棒を取り外し、操作棒を他方の切断面の防錆に使用することも可能である。 The rust preventive device of the present invention is
The holding portion includes a screwing portion that is formed on the operation rod and screwed into the antirust cover.
According to this feature, since the screwing of the screwed portion with respect to the antirust cover can be easily released by rotating the operating rod, the antirust cover is brought into contact with one cut surface of the existing fluid pipe. It is also possible to remove the operating rod from the antirust cover and use the operating rod for anticorrosion of the other cut surface.

本発明の防錆装置は、
前記筐体の前記切断面近傍には、該切断面に当接した前記防錆カバーを係止する、前記筐体の外方から操作可能な係止手段が備えられていることを特徴としている。
この特徴によれば、既設流体管の不断流状態を保ったままで、操作棒を取り外したとしても防錆カバーを既設流体管の切断面に当接保持した状態で係止させることができる。 The rust preventive device of the present invention is
In the vicinity of the cut surface of the casing, there is provided a locking means for locking the rust-proof cover that is in contact with the cut surface and operable from the outside of the casing. .
According to this feature, even if the operation rod is removed while keeping the existing fluid pipe in an uninterrupted flow state, the rust preventive cover can be locked in a state of being held in contact with the cut surface of the existing fluid pipe.

本発明の防錆装置は、
前記防錆カバーは、前記係止手段が当接する当接面を備えていることを特徴としている。
この特徴によれば、防錆カバーが係止手段と当接面で面接触することで、防錆カバーの係止を確実に行うことができる。 The rust preventive device of the present invention is
The rust preventive cover includes an abutting surface with which the locking means abuts.
According to this feature, the rust-proof cover can be reliably locked by the surface contact of the rust-proof cover with the locking means at the contact surface.

本発明の防錆装置は、
前記操作棒が前記既設流体管の軸方向と平行にスライド移動可能な軸方向移動手段を備えることを特徴としている。
この特徴によれば、防錆カバーを既設流体管の切断面に当接させる際に操作棒が上下方向にぶれることがないので、操作棒の既設流体管の軸方向と平行の移動によって防錆カバーの上下位置を変化させずに切断面に防錆カバーを当接させることができる。 The rust preventive device of the present invention is
The operation rod is provided with an axial movement means that can slide in parallel with the axial direction of the existing fluid pipe.
According to this feature, when the rust cover is brought into contact with the cut surface of the existing fluid pipe, the operation rod does not shake in the vertical direction, so that the rust prevention is achieved by the movement of the operation rod parallel to the axial direction of the existing fluid pipe. The antirust cover can be brought into contact with the cut surface without changing the vertical position of the cover.

実施例における切断された既設流体管を示す一部破断平面図である。It is a partially broken top view which shows the existing fluid pipe | tube cut | disconnected in the Example. （ａ）は、防錆カバーを取り付ける前の防錆装置を示す断面図であり、（ｂ）は、図２（ａ）におけるＡ−Ａ断面図である。(A) is sectional drawing which shows the rust prevention apparatus before attaching a rust prevention cover, (b) is AA sectional drawing in Fig.2 (a). （ａ）は、既設流体管の切断面に取り付けられる防錆カバーを示す正面図であり、（ｂ）は、防錆カバーを示す背面図であり、（ｃ）は、防錆カバーを示す平面図であり、（ｄ）は、図３（ａ）における防錆カバーのＢ−Ｂ断面図である。(A) is a front view which shows the antirust cover attached to the cut surface of the existing fluid pipe | tube, (b) is a rear view which shows an antirust cover, (c) is a plane which shows an antirust cover It is a figure and (d) is BB sectional drawing of the antirust cover in Fig.3 (a). （ａ）は、防錆装置の操作部を示す断面図であり、（ｂ）は、図４（ａ）におけるＣ−Ｃ断面図ある。(A) is sectional drawing which shows the operation part of a rust prevention apparatus, (b) is CC sectional drawing in Fig.4 (a). 図２（ａ）における係止部を示す一部拡大断面図である。It is a partially expanded sectional view which shows the latching | locking part in Fig.2 (a). （ａ）は、防錆カバーを既設流体管の切断面の対向位置まで移動させた状態を示す防錆装置の断面図であり、（ｂ）は、防錆カバーを既設流体管の切断面に当接保持させた状態を示す防錆装置の断面図である。(A) is sectional drawing of the rust prevention apparatus which shows the state which moved the rust prevention cover to the opposing position of the cut surface of the existing fluid pipe, (b) is a cut surface of the existing fluid pipe on the cut surface of the existing fluid pipe It is sectional drawing of the rust prevention apparatus which shows the state contacted and held. （ａ）は、防錆カバーを既設流体管の切断面の対向位置まで移動させた状態を示す断面図であり、（ｂ）は、防錆カバーを既設流体管の切断面に当接保持させた状態を示す断面図である。(A) is sectional drawing which shows the state which moved the anticorrosion cover to the opposing position of the cut surface of the existing fluid pipe, (b) makes the antirust cover contact and hold the cut surface of the existing fluid pipe It is sectional drawing which shows the state. （ａ）は、防錆カバーを既設流体管の切断面に当接させた状態を示す係止部の一部拡大断面図であり、（ｂ）は、防錆カバーを既設流体管の切断面に当接保持させた状態を示す係止片の一部拡大断面図である。(A) is a partial expanded sectional view of the latching | locking part which shows the state which made the rust preventive cover contact | abut the cut surface of the existing fluid pipe, (b) is the cut surface of the existing fluid pipe | tube. It is a partially expanded sectional view of the latching piece which shows the state contacted and held by.

本発明に係る防錆装置を実施するための形態を実施例に基づいて以下に説明する。   EMBODIMENT OF THE INVENTION The form for implementing the antirust apparatus which concerns on this invention is demonstrated below based on an Example.

実施例に係る防錆装置につき、図１から図８を参照して説明する。以下、本実施例では図３（ｃ）の紙面下方側を防錆カバーの正面側とするとともに、紙面左右側を防錆カバーの左右側とし、図３（ａ）の紙面上下側を防錆カバーの上下側として説明する。図１の符号１は、本発明の防錆装置が適用される既設流体管である。この既設流体管１は、例えば、内部に流体としての上水が流れている水道管であり、この既設流体管１に新たな弁体等を設けるために、所定箇所を図示しないホールソー等の切削工具によって切断されている。   The rust preventive apparatus according to the embodiment will be described with reference to FIGS. Hereinafter, in this embodiment, the lower side of the paper surface of FIG. 3C is the front side of the anticorrosion cover, the left and right sides of the paper surface are the left and right sides of the anticorrosion cover, and the upper and lower sides of the paper surface of FIG. It demonstrates as the upper and lower sides of a cover. Reference numeral 1 in FIG. 1 is an existing fluid pipe to which the rust preventive device of the present invention is applied. The existing fluid pipe 1 is, for example, a water pipe in which clean water as a fluid flows inside, and in order to provide a new valve body or the like in the existing fluid pipe 1, a predetermined location such as a hole saw or the like is cut. It has been cut by a tool.

具体的には、図１及び図２（ａ）に示すように、先ず既設流体管１には、既設流体管１を水密に密封するための筐体２が取り付けられる。この筐体２の上部には、水平方向にスライド移動することで筐体２内を開閉自在とする弁体３ａを備えた仕切部３が水密に取り付けられている。   Specifically, as shown in FIGS. 1 and 2A, first, a housing 2 for watertightly sealing the existing fluid pipe 1 is attached to the existing fluid pipe 1. A partition portion 3 having a valve body 3a that can be opened and closed by sliding in the horizontal direction is attached to the upper portion of the housing 2 in a watertight manner.

この仕切部３の上端部に図示しないホールソーを備えた作業ケースを水密に取り付け、弁体３ａを開放した状態でホールソーを下方に向けて移動させることで、既設流体管１を不断流状態で切断する。したがって、既設流体管１の切断面１ａは、ホールソーによって切断されたことで平面視円弧状に形成されている。   A work case equipped with a hole saw (not shown) is attached to the upper end of the partition part 3 in a watertight manner, and the hole saw is moved downward with the valve body 3a opened, thereby cutting the existing fluid pipe 1 in an uninterrupted flow state. To do. Therefore, the cut surface 1a of the existing fluid pipe 1 is formed in an arc shape in plan view by being cut by the hole saw.

既設流体管１を切断した後は、ホールソーと既設流体管１の切断部とを作業ケース内に収納した後に弁体３ａを閉塞し、作業ケースを仕切部３から取り外すことで既設流体管１の切断作業を終了する。このとき、既設流体管１は図１に示すように、切断された状態で筐体２と仕切部３とで水密に密封されている。   After the existing fluid pipe 1 is cut, the valve body 3a is closed after the hole saw and the cut portion of the existing fluid pipe 1 are housed in the work case, and the work case is removed from the partition part 3 to remove the existing fluid pipe 1 End the cutting operation. At this time, as shown in FIG. 1, the existing fluid pipe 1 is sealed in a watertight manner by the housing 2 and the partition portion 3 in a cut state.

本発明の防錆装置は、前述のようにして筐体２内で切断された既設流体管１の切断面１ａを防錆するための装置である。   The rust preventive device of the present invention is a device for rusting the cut surface 1a of the existing fluid pipe 1 cut in the casing 2 as described above.

図２（ａ）に示すように、仕切部３の上端部には作業ケース４が水密に取り付けられている。この作業ケース４内には、既設流体管１の切断面１ａを防錆するための防錆カバー５が配置されている。また、作業ケース４の上部には、上下方向を向き、且つ既設流体管１の軸方向に長寸に形成された長孔４ａが形成されている。   As shown in FIG. 2A, a work case 4 is attached to the upper end of the partition 3 in a watertight manner. In the work case 4, a rust-proof cover 5 for rusting the cut surface 1 a of the existing fluid pipe 1 is disposed. In addition, a long hole 4 a is formed in the upper portion of the work case 4 so as to face in the vertical direction and to be elongated in the axial direction of the existing fluid pipe 1.

更に、作業ケース４の上端部には、防錆カバー５を操作するための操作部６が設けられている。そして、この操作部６は、長孔４ａを介して作業ケース４内に下端部側が挿通配置された操作棒８を備えており、この操作棒８下端部に防錆カバー５が保持されている。   Furthermore, an operation unit 6 for operating the antirust cover 5 is provided at the upper end of the work case 4. And this operation part 6 is provided with the operation stick | rod 8 by which the lower end part side was penetrated by the work case 4 via the long hole 4a, and the antirust cover 5 is hold | maintained at this operation stick | rod 8 lower end part. .

この防錆カバー５は、図３（ａ）〜図３（ｄ）に示すように、既設流体管１の切断面１ａと略同形に形成された後述の環状溝５ｃを有する防錆フレーム５ａと、この防錆フレーム５ａの環状溝５ｃに取り付けられた防錆ゴム５ｂと、から主に構成されている。具体的には、防錆フレーム５ａは、既設流体管１の切断面１ａに当接するために、正面視で既設流体管１と同径の環状且つ平面視で切断面１ａと同曲率の円弧形状に形成されている。   As shown in FIGS. 3A to 3D, the rust-proof cover 5 includes a rust-proof frame 5a having an annular groove 5c, which will be described later, formed substantially in the same shape as the cut surface 1a of the existing fluid pipe 1. The anti-corrosion rubber 5b attached to the annular groove 5c of the anti-rust frame 5a is mainly constituted. Specifically, the rust prevention frame 5a is in an arc shape having the same diameter as the existing fluid pipe 1 in front view and the same curvature as the cut face 1a in plan view in order to contact the cut face 1a of the existing fluid pipe 1 Is formed.

また、防錆フレーム５ａの背面には環状溝５ｃが形成されており、防錆フレーム５ａの背面上端部には、背面側に向けてガイド片５ｄが突設されている。このガイド片５ｄは、先端部が下方に向けて屈曲した鉤状に形成されている。   Further, an annular groove 5c is formed on the back surface of the rust preventive frame 5a, and a guide piece 5d is projected from the back upper end portion of the rust preventive frame 5a toward the back side. The guide piece 5d is formed in a bowl shape whose tip is bent downward.

更に、防錆フレーム５ａの上端部と下端部とからは、正面側に向かって突片５ｅ，５ｆが突設されている。このうち突片５ｅには、上下方向を向く貫通孔５ｈが形成されており、突片５ｆには、貫通孔５ｈと同一軸線上で上下方向を向く螺子孔５ｉが形成されている。   Further, projecting pieces 5e and 5f project from the upper end and the lower end of the rust prevention frame 5a toward the front side. Among these, the projecting piece 5e is formed with a through hole 5h facing in the up-down direction, and the projecting piece 5f is formed with a screw hole 5i facing up and down on the same axis as the through-hole 5h.

尚、図４（ａ）に示すように、操作棒８の下端部には本発明における保持部としての螺合部８ｂが形成されており、操作棒８は突片５ｅの貫通孔５ｈを介して突片５ｆの螺子孔５ｉに螺合部８ｂを螺合させることによって、防錆フレーム５ａを保持するようになっている。   As shown in FIG. 4 (a), a screwing portion 8b as a holding portion in the present invention is formed at the lower end portion of the operating rod 8, and the operating rod 8 is inserted through the through hole 5h of the protruding piece 5e. Thus, the rust preventive frame 5a is held by screwing the screwing portion 8b into the screw hole 5i of the protruding piece 5f.

また、防錆フレーム５ａの正面は、上部の左右２箇所と下部の左右２箇所、そして突片５ｆの下部の計５箇所が切り欠かれた当接面５ｇに形成されており、後述する係止片１０が面接触可能となっている。   Further, the front surface of the anticorrosive frame 5a is formed on a contact surface 5g in which a total of five locations, two on the left and right on the upper portion, two on the left and right on the lower portion, and a lower portion of the projecting piece 5f are cut out. The stop piece 10 can be brought into surface contact.

一方、防錆ゴム５ｂは、既設流体管１の切断面１ａに当接可能な環状に形成されており、防錆フレーム５ａの環状溝５ｃに嵌入されている。   On the other hand, the rust preventive rubber 5b is formed in an annular shape capable of coming into contact with the cut surface 1a of the existing fluid pipe 1, and is fitted into the annular groove 5c of the rust preventive frame 5a.

次に、操作部６について説明する。図４（ａ）及び図４（ｂ）に示すように、操作部６は、作業ケース４の上面で長孔４ａを水密に閉塞する基台６ａを備えている。この基台６ａには、周面に螺子切りが施された円柱状の螺子棒６ｂが上方に向けて立設されている。   Next, the operation unit 6 will be described. As shown in FIGS. 4A and 4B, the operation unit 6 includes a base 6 a that closes the long hole 4 a in a watertight manner on the upper surface of the work case 4. A cylindrical screw rod 6b whose peripheral surface is threaded is erected upward on the base 6a.

また、螺子棒６ｂには、水平方向に長寸に形成された連結片６ｃが取り付けられている。この連結片６ｃは、ナット６ｄを水平方向に回動可能に保持しており、ナット６ｄを回動させることによって連結片６ｃが螺子棒６ｂ上を上下方向に移動可能となっている。更に、基台６ａには、上方に向けてガイド棒６ｅが連結片６ｃの水平方向の一端側に対して貫通するように立設されている。このため、連結片６ｃは螺子棒６ｂ上の上下方向の移動時にガイド棒６ｅに沿って移動するようになっている。   Further, a connecting piece 6c that is formed in the horizontal direction is attached to the screw rod 6b. The connecting piece 6c holds the nut 6d so as to be rotatable in the horizontal direction. By rotating the nut 6d, the connecting piece 6c can move in the vertical direction on the screw rod 6b. Further, a guide bar 6e is erected on the base 6a so as to penetrate upward with respect to one end side in the horizontal direction of the connecting piece 6c. For this reason, the connecting piece 6c moves along the guide rod 6e when moving in the vertical direction on the screw rod 6b.

連結片６ｃの水平方向の他端側には、上下方向を向く円筒状のカバー体６ｆが取り付けられている。具体的には、このカバー体６ｆの上端部は連結片６ｃに保持されているとともに、下端部は基台６ａと長孔４ａとを貫通して作業ケース４内に配置されている。このカバー体６ｆ内には、操作棒８が下端部をカバー体６ｆの下方に配置した状態で、水平方向に回動可能としながら水密に挿通配置されている。尚、カバー体６ｆが貫通する基台内にはパッキンが設けられており、カバー体６ｆと基台６ａとの間は水密となっている。   A cylindrical cover body 6f is attached to the other end side in the horizontal direction of the connecting piece 6c. Specifically, the upper end portion of the cover body 6f is held by the connecting piece 6c, and the lower end portion is disposed in the work case 4 through the base 6a and the long hole 4a. In the cover body 6f, the operation rod 8 is inserted in a watertight manner while being rotatable in the horizontal direction with the lower end portion disposed below the cover body 6f. In addition, packing is provided in the base through which the cover body 6f passes, and the space between the cover body 6f and the base 6a is watertight.

更に尚、操作棒８の上端部には、カバー体６ｆの上端部よりも上方に回動突部８ａが突設されており、使用者はこの回動突部８ａをレンチ等の工具で把持することで、操作棒８を水平方向に回動させることができる。   Furthermore, a rotating protrusion 8a is provided at the upper end of the operating rod 8 above the upper end of the cover body 6f. The user holds the rotating protrusion 8a with a tool such as a wrench. By doing so, the operating rod 8 can be rotated in the horizontal direction.

また、図４（ｂ）に示すように、基台６ａの下端部には、左右方向に突設する延設片６ｇが形成されている。一方、基台６ａの左右の作業ケース４の上面には、ガイド片６ｈが固定されており、そして、延設片６ｇは、基台６ａの左右方向に配置されたガイド片６ｈによって、上方に離脱しないよう係止されている。   Moreover, as shown in FIG.4 (b), the extension piece 6g which protrudes in the left-right direction is formed in the lower end part of the base 6a. On the other hand, guide pieces 6h are fixed to the upper surfaces of the left and right work cases 4 of the base 6a, and the extended pieces 6g are moved upward by the guide pieces 6h arranged in the left-right direction of the base 6a. It is locked so as not to leave.

このため、基台６ａは、ガイド片６ｈによって上方に離脱しないよう係止されているので、長孔４ａの上方を長孔４ａの密封を保持しながら、既設流体管１の軸方向と平行にスライド移動可能となっている。このため、カバー体６ｆ内に挿通配置されている操作棒８も基台６ａと共に既設流体管１の軸方向と平行にスライド移動可能となっている。つまり、基台６ａは本発明における軸方向移動手段を構成している。   For this reason, since the base 6a is locked by the guide piece 6h so as not to be detached upward, the base 6a is kept parallel to the axial direction of the existing fluid pipe 1 while maintaining the sealing of the long hole 4a above the long hole 4a. Slide movement is possible. For this reason, the operation rod 8 inserted and arranged in the cover body 6f is also slidable in parallel with the axial direction of the existing fluid pipe 1 together with the base 6a. That is, the base 6a constitutes an axial movement means in the present invention.

尚、図４（ａ）に示すように、作業ケース４の上面には、調整螺子部９が前述した操作部６を挟んで対向配置されている。具体的には、これら調整螺子部９は、基台６ａを既設流体管１の軸方向から挟むように、既設流体管１の軸方向を向いて対向配置されている。これら調整螺子部９は、使用者が回動させることによって基台６ａを既設流体管１の軸方向に向けて押圧し、基台６ａのスライド移動量を微調整可能としている。   As shown in FIG. 4A, the adjustment screw portion 9 is disposed on the upper surface of the work case 4 so as to face the operation portion 6 described above. Specifically, these adjusting screw portions 9 are arranged to face each other in the axial direction of the existing fluid pipe 1 so as to sandwich the base 6 a from the axial direction of the existing fluid pipe 1. These adjusting screw portions 9 press the base 6a in the axial direction of the existing fluid pipe 1 when the user rotates, thereby enabling fine adjustment of the slide movement amount of the base 6a.

次に、図２（ａ）及び図２（ｂ）に示すように、筐体２内における既設流体管１の切断面１ａ近傍には、既設流体管１の切断面１ａに当接した防錆カバー５を係止するための係止部１１が、計５箇所配置されている。これら係止部１１について、既設流体管１の下端部の下方に配置されている係止分１１について説明する。尚、他の係止部１１は全て同一構成のため、説明を省略する。   Next, as shown in FIGS. 2 (a) and 2 (b), in the vicinity of the cut surface 1a of the existing fluid pipe 1 in the housing 2, the rust preventive is in contact with the cut surface 1a of the existing fluid pipe 1. A total of five locking portions 11 for locking the cover 5 are arranged. Regarding these locking portions 11, the locking portion 11 disposed below the lower end portion of the existing fluid pipe 1 will be described. In addition, since all the other latching | locking parts 11 are the same structures, description is abbreviate | omitted.

図５及び図８（ａ）に示すように、係止部１１は、筐体２に対して既設流体管１の軸方向にスライド移動可能且つ着脱自在に取り付けられた基部１１ａを備えている。この基部１１ａには、既設流体管１の軸方向における筐体２の外方に向けて周面に螺子切りが施された螺子棒１１ｂが突設されている。   As shown in FIGS. 5 and 8A, the locking portion 11 includes a base portion 11 a that is slidably movable in the axial direction of the existing fluid pipe 1 and detachably attached to the housing 2. On the base 11a, a threaded rod 11b having a threaded surface is provided so as to project outward from the housing 2 in the axial direction of the existing fluid pipe 1.

また、螺子棒１１ｂには、垂直方向に長寸に形成された連結片１１ｃが取り付けられている。この連結片１１ｃは、ナット１１ｄを垂直方向に回動可能に保持しており、ナット１１ｄを回動させることによって連結片１１ｃが螺子棒１１ｂ上を既設流体管１の軸方向に平行に移動可能となっている。更に、基部１１ａには、既設流体管１の軸方向における筐体２の外方に向けてガイド棒１１ｅが連結片１１ｃの下端部に対して貫通するように突設されている。このため、連結片１１ｃは螺子棒１１ｂ上の既設流体管１の軸方向の平行移動時にガイド棒１１ｅに沿って移動するようになっている。   In addition, a connecting piece 11c that is formed to be long in the vertical direction is attached to the screw rod 11b. The connecting piece 11c holds the nut 11d so as to be rotatable in the vertical direction, and the connecting piece 11c can move on the screw rod 11b in parallel to the axial direction of the existing fluid pipe 1 by rotating the nut 11d. It has become. Further, a guide rod 11e is provided on the base portion 11a so as to penetrate the lower end portion of the connecting piece 11c toward the outside of the housing 2 in the axial direction of the existing fluid pipe 1. For this reason, the connecting piece 11c moves along the guide rod 11e when the existing fluid pipe 1 on the screw rod 11b is translated in the axial direction.

尚、筐体２における既設流体管１の切断面１ａ下端部下方には、筐体２の外方と連通する貫通孔２ａが形成されている。この貫通孔２ａには、本発明における係止手段としての係止片１０が挿通配置されている。この係止片１０の筐体２内側に配置された端部は、側面視Ｌ字形状の係止突部１０ａに形成されている。一方、筐体２外側に配置された端部側の周面には既設流体管１の軸方向における筐体２の外方に向けて螺子切りが施され、ナット１１ｆが螺着されている。   A through hole 2 a that communicates with the outside of the housing 2 is formed below the lower end of the cut surface 1 a of the existing fluid pipe 1 in the housing 2. A locking piece 10 as a locking means in the present invention is inserted through the through hole 2a. An end portion of the locking piece 10 disposed inside the housing 2 is formed in a locking projection 10a having an L shape in side view. On the other hand, the peripheral surface on the end side arranged on the outer side of the casing 2 is threaded toward the outside of the casing 2 in the axial direction of the existing fluid pipe 1, and a nut 11f is screwed.

そして、係止片１０の筐体２外側に配置された端部は、使用者がレンチ等の工具で把持可能な角柱形状に形成され、連結片１１ｃの上端部に当接している。また、貫通孔２ａ内に配置されている係止片１０の所定箇所にはパッキンが設けられており、係止片１０は貫通孔２ａを水密としながら、垂直方向に回動可能且つ、既設流体管１の軸方向に平行にスライド移動可能となっている。このため、係止片１０は、前述した既設流体管１の切断時には、筐体２の外方側に向けてスライド移動することで、既設流体管１の切断箇所から退避可能となっている。   And the edge part arrange | positioned on the housing | casing 2 outer side of the latching piece 10 is formed in the prism shape which a user can hold | grip with tools, such as a wrench, and is contact | abutting to the upper end part of the connection piece 11c. Further, a packing is provided at a predetermined position of the locking piece 10 disposed in the through hole 2a. The locking piece 10 can be rotated in the vertical direction while the through hole 2a is watertight, and the existing fluid. The slide is movable parallel to the axial direction of the tube 1. For this reason, the locking piece 10 can be retracted from the cut portion of the existing fluid pipe 1 by sliding toward the outer side of the housing 2 when the existing fluid pipe 1 is cut.

次に、前述したように構成された防錆装置の既設流体管１の切断面１ａに対する防錆動作について説明する。先ず図２（ａ）及び図６（ａ）に示すように、仕切部３の弁体３ａをスライド移動させ、筐体２内と作業ケース４内とを連通させる。このとき、既設流体管１が切断されているため、筐体２内に溜まっていた上水等の流体が作業ケース４内にまで流入する。   Next, the rust prevention operation | movement with respect to the cut surface 1a of the existing fluid pipe | tube 1 of the rust prevention apparatus comprised as mentioned above is demonstrated. First, as shown in FIGS. 2 (a) and 6 (a), the valve body 3a of the partition 3 is slid and the inside of the housing 2 and the inside of the work case 4 are communicated. At this time, since the existing fluid pipe 1 is cut, fluid such as clean water that has accumulated in the housing 2 flows into the work case 4.

この状態で操作部６のナット６ｄを回動操作することで、操作棒８に保持されている防錆カバー５を作業ケース４内から筐体２内に向けて下方に移動させる。そして、図６（ａ）及び図７（ａ）に示すように、既設流体管１の切断面１ａと対向する位置まで防錆カバー５を移動させたら、調整螺子部９を回動操作し、基台６ａを既設流体管１の軸方向に平行に移動させることで、防錆ゴム５ｂが既設流体管１の切断面１ａに当接するまで防錆カバー５を既設流体管１の切断面１ａに向けて移動させる。   By rotating the nut 6d of the operation unit 6 in this state, the rust preventive cover 5 held by the operation rod 8 is moved downward from the work case 4 into the housing 2. Then, as shown in FIGS. 6 (a) and 7 (a), when the anticorrosion cover 5 is moved to a position facing the cut surface 1a of the existing fluid pipe 1, the adjusting screw portion 9 is rotated, By moving the base 6 a parallel to the axial direction of the existing fluid pipe 1, the rust preventive cover 5 is placed on the cut surface 1 a of the existing fluid pipe 1 until the rust preventive rubber 5 b comes into contact with the cut surface 1 a of the existing fluid pipe 1. Move towards.

このとき、防錆カバー５のガイド片５ｄの下端部を既設流体管１の上端面に当接させながら防錆カバー５を既設流体管１の切断面１ａに向けて移動させることで、既設流体管１内を流れる流体の流圧によって防錆カバー５に生じる既設流体管１の切断面１ａへの位置ずれを抑えることができる。   At this time, the rust preventive cover 5 is moved toward the cut surface 1a of the existing fluid pipe 1 while the lower end portion of the guide piece 5d of the rust preventive cover 5 is brought into contact with the upper end face of the existing fluid pipe 1, thereby The positional shift to the cut surface 1a of the existing fluid pipe | tube 1 which arises in the antirust cover 5 with the fluid pressure of the fluid which flows through the pipe | tube 1 can be suppressed.

次に、防錆ゴム５ｂと既設流体管１の切断面１ａとが当接したら、図８（ａ）に示すように、ナット１１ｄを回動操作し、連結片１１ｃを筐体２側に向けて移動させることで係止片１０を更に筐体２内に押し込む。尚、筐体２外側で連結片１１ｃの上端部に当接している連結片１０の端部には、特に図示しないが係止突部１０ａの向きを示す目盛りが予め書き込まれており、使用者はこの目盛りを目視することで係止突部１０ａの向きを正確に把握し、確実に係止突部１０ａを防錆カバー５に係止させることができるようになっている。   Next, when the rust preventive rubber 5b and the cut surface 1a of the existing fluid pipe 1 come into contact with each other, as shown in FIG. 8A, the nut 11d is rotated so that the connecting piece 11c faces the housing 2 side. The locking piece 10 is further pushed into the housing 2 by moving the same. Although not shown in particular, a scale indicating the direction of the locking projection 10a is written in advance on the end of the connecting piece 10 that is in contact with the upper end of the connecting piece 11c outside the housing 2. By visually observing the scale, the direction of the locking projection 10a can be accurately grasped, and the locking projection 10a can be reliably locked to the rust-proof cover 5.

この図８（ａ）に示す状態から係止片１０を回動操作することによって、図７（ｂ）に示すように、係止片１０の係止突部１０ａを防錆カバー５側に向け、係止突部１０ａを防錆カバー５に形成された当接面５ｇに面接触させる。この係止片の係止突部１０ａを当接面に面接触させる操作を以下の４箇所の係止片１０でも行う。   By rotating the locking piece 10 from the state shown in FIG. 8A, the locking projection 10a of the locking piece 10 faces the rust-proof cover 5 as shown in FIG. 7B. The locking projection 10a is brought into surface contact with the contact surface 5g formed on the antirust cover 5. The operation of bringing the locking projection 10a of the locking piece into surface contact with the contact surface is also performed with the following four locking pieces 10.

更に、図８（ｂ）に示すように、係止部１１をナット１１ｆを残して筐体２から取り外す。そして、ナット１１ｆを回動操作し、係止片１０を既設流体管１の軸方向における筐体２の外方に向けて移動させることで、係止片１０が既設流体管１内の流体からの水流圧によって防錆カバー５の係止を解除しないよう位置固定されるとともに、係止突部１０ａによって防錆カバー５が既設流体管１の切断面１ａに対して押圧される。この係止突部１０ａの押圧によって既設流体管１の切断面１ａと防錆ゴム５ｂとの当接を強固とする。以上により、既設流体管１の切断面１ａの防錆カバー５の当接保持が完了する。   Further, as shown in FIG. 8B, the locking portion 11 is removed from the housing 2 leaving the nut 11f. Then, the locking piece 10 is moved from the fluid in the existing fluid pipe 1 by rotating the nut 11 f and moving the locking piece 10 toward the outside of the housing 2 in the axial direction of the existing fluid pipe 1. The position of the rust preventive cover 5 is fixed so as not to be released by the water flow pressure, and the rust preventive cover 5 is pressed against the cut surface 1a of the existing fluid pipe 1 by the engaging protrusion 10a. The contact between the cut surface 1a of the existing fluid pipe 1 and the rust preventive rubber 5b is strengthened by the pressing of the locking projection 10a. Thus, the contact and holding of the rust preventive cover 5 on the cut surface 1a of the existing fluid pipe 1 is completed.

尚、特に図示しないが、上述のように既設流体管１の切断面１ａに防錆カバー５の当接保持させた後、同一の動作によってもう一方の既設流体管１の切断面１ａに対しても防錆カバー５の当接保持を行うことによって、両切断面１ａの防錆が完了する。   Although not particularly illustrated, after the antirust cover 5 is held in contact with the cut surface 1a of the existing fluid pipe 1 as described above, the same operation is performed with respect to the cut surface 1a of the other existing fluid pipe 1. In addition, the rust prevention of the both cut surfaces 1a is completed by holding the rust prevention cover 5 in contact.

また、操作棒８を防錆カバー５から取り外すには、図７（ｂ）に示す状態から、回動突部８ａを回動させることで操作棒８の螺合部８ｂと螺子孔５ｉとの螺合を解除させる。そして、図６（ｂ）に示すように、ナット６ｄを回動操作することによって操作棒８を筐体２内から作業ケース４内に引き上げ、弁体３ａをスライド移動させることによって筐体２と作業ケース４との連通を解除する。   Further, in order to remove the operating rod 8 from the rust-proof cover 5, by rotating the rotating projection 8a from the state shown in FIG. 7B, the screwing portion 8b of the operating rod 8 and the screw hole 5i are rotated. Release the screw. Then, as shown in FIG. 6B, the operation rod 8 is pulled up from the housing 2 into the work case 4 by rotating the nut 6d, and the valve body 3a is slid to move the housing 2 The communication with the work case 4 is released.

更に、作業ケース４を仕切部３から取り外す際には、作業ケース４に備えられた図示しない排水弁を開放することで作業ケース４内に溜まっている流体を外部に排出し、流体の排出完了後に取り外しを行う。尚、作業ケース４が取り外された後は、筐体２内の設置する弁体を内部に備えた図示しない作業ケースが仕切部３に取り付けられ、弁体３ａをスライド移動させて筐体２と作業ケースとを連通させることで、筐体２内での弁体の取り付け作業を行い、切断された既設流体管１間に弁体を設ける。   Further, when the work case 4 is removed from the partition portion 3, the drainage valve (not shown) provided in the work case 4 is opened to discharge the fluid accumulated in the work case 4 to the outside, and the discharge of the fluid is completed. Remove later. After the work case 4 is removed, a work case (not shown) having a valve body to be installed in the housing 2 is attached to the partition portion 3 and the valve body 3a is slid to move the housing 2 By connecting the working case to the work case, the valve body is attached in the housing 2, and the valve body is provided between the cut existing fluid pipes 1.

以上、本実施例における防錆装置にあっては、既設流体管１を密封した筐体２と、筐体２の上部を開閉可能とする弁体３ａと、筐体２に対して弁体３ａを介して密封状に接続される作業ケース４と、作業ケース４内に配置された環状の防錆カバー５と、を備え、筐体２内において、不断流状態で切断された既設流体管１の切断面１ａに防錆カバー５を当接保持させることで、切断面１ａを防錆する防錆装置であって、一端が作業ケース４内に、他端が作業ケース４外の上方にそれぞれ配置され、作業ケース４の上下方向及び既設流体管１の軸方向に移動可能な操作棒８を備え、操作棒８は防錆カバー５を保持する保持部を備え、操作棒８を操作することで、保持部で保持された防錆カバー５を切断面１ａの全面に当接保持させることによって、作業ケース４内で防錆カバー５を保持した操作棒８を既設流体管１の切断面１ａに向けて移動させることで切断面１ａに防錆カバー５を当接保持させることができるので、防錆カバー５を既設流体管１の切断面１ａに対して特別な機構を用いずに安価に防錆を行うことができる。   As described above, in the rust prevention apparatus according to the present embodiment, the casing 2 in which the existing fluid pipe 1 is sealed, the valve body 3 a that can open and close the upper portion of the casing 2, and the valve body 3 a with respect to the casing 2. The existing fluid pipe 1, which is cut in an uninterrupted flow state in the housing 2, and is provided with a work case 4 that is connected in a sealed manner via a ring and an annular rust-proof cover 5 disposed in the work case 4. Is a rust preventive device that rusts the cut surface 1a by holding the rust cover 5 in contact with the cut surface 1a, with one end inside the work case 4 and the other end above the work case 4 respectively. An operation rod 8 that is arranged and movable in the vertical direction of the work case 4 and the axial direction of the existing fluid pipe 1 is provided. The operation rod 8 includes a holding portion that holds the anticorrosion cover 5 and operates the operation rod 8. Then, the rust preventive cover 5 held by the holding part is held in contact with the entire cut surface 1a. Since the operating rod 8 holding the antirust cover 5 in the work case 4 is moved toward the cut surface 1a of the existing fluid pipe 1, the antirust cover 5 can be held in contact with the cut surface 1a. The rust cover 5 can be rust-prevented at low cost without using a special mechanism for the cut surface 1a of the existing fluid pipe 1.

また、保持部は、操作棒８に形成された、防錆カバー５に螺合する螺合部８ｂを備えることで、操作棒８を回動させることで螺合部８ｂの防錆カバー５に対する螺合を容易に解除させることができるので、既設流体管１の一方の切断面１ａに防錆カバー５を当接させた後に防錆カバー５から操作棒８を取り外し、操作棒８を他方の切断面１ａの防錆に使用することも可能である。   Further, the holding portion includes a screwing portion 8b formed on the operation rod 8 and screwed into the antirust cover 5, so that the operation rod 8 is rotated to rotate the screwing portion 8b against the antirust cover 5. Since the screwing can be easily released, the operating rod 8 is removed from the antirust cover 5 after the antirust cover 5 is brought into contact with one cut surface 1a of the existing fluid pipe 1, and the operating rod 8 is moved to the other end. It can also be used for rust prevention of the cut surface 1a.

また、筐体２の切断面１ａ近傍には、切断面１ａに当接した防錆カバー５を係止する、筐体２の外方から操作可能な係止片１０が備えられているので、既設流体管１の不断流状態を保ったままで、操作棒８を取り外したとしても防錆カバー５を既設流体管１の切断面１ａに当接保持した状態で係止させることができる。   Further, in the vicinity of the cut surface 1a of the housing 2, there is provided a locking piece 10 that can be operated from the outside of the housing 2 for locking the rust preventive cover 5 that is in contact with the cutting surface 1a. Even if the operation rod 8 is removed while keeping the existing fluid pipe 1 in an uninterrupted flow state, the rust-proof cover 5 can be locked in a state of being held in contact with the cut surface 1 a of the existing fluid pipe 1.

また、防錆カバー５は、係止片１０が当接する当接面５ｇを備えているので、防錆カバー５が係止片１０と当接面５ｇで面接触することで、防錆カバー５の係止を確実に行うことができる。   Moreover, since the rust prevention cover 5 is provided with the contact surface 5g with which the locking piece 10 contacts, the rust prevention cover 5 comes into surface contact with the locking piece 10 at the contact surface 5g. Can be reliably engaged.

また、操作棒８が既設流体管１の軸方向と平行にスライド移動可能な基台６ａを備えることで、防錆カバー５を既設流体管１の切断面１ａに当接させる際に操作棒８が上下方向にぶれることがないので、操作棒８の既設流体管１の軸方向と平行の移動によって防錆カバー５の上下位置を変化させずに切断面１ａに防錆カバー５を当接させることができる。   In addition, since the operating rod 8 includes a base 6 a that can slide and move in parallel with the axial direction of the existing fluid pipe 1, the operating rod 8 is brought into contact with the cut surface 1 a of the existing fluid pipe 1. Therefore, the antirust cover 5 is brought into contact with the cut surface 1a without changing the vertical position of the antirust cover 5 by the movement of the operation rod 8 parallel to the axial direction of the existing fluid pipe 1. be able to.

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 the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

例えば、前記実施例では、既設流体管１を内部に上水が流れる水道管として説明したが、既設流体管１内を流れる流体は上水の他、石油等の水以外の液体でもよく、また、液体とガス等の混合物であってもよい。   For example, in the above embodiment, the existing fluid pipe 1 is described as a water pipe through which clean water flows, but the fluid flowing in the existing fluid pipe 1 may be liquid other than water, such as petroleum, in addition to clean water, It may be a mixture of liquid and gas.

また、前記実施例では、既設流体管１をホールソー等の切削工具により切断し、防錆フレーム５ａを切断面１ａに当接可能な正面視で既設流体管１と同径の環状且つ平面視で切断面１ａと同曲率の円弧形状に形成したが、例えば、既設流体管１をチェーンソー等の切削工具によって直線状に切断し、この切断面に対して防錆カバーを当接保持させるようにしてもよい。   Moreover, in the said Example, the existing fluid pipe | tube 1 is cut | disconnected with cutting tools, such as a hole saw, and the rust prevention flame | frame 5a is the same diameter as the existing fluid pipe | tube 1 by the front view which can contact | abut to the cut surface 1a, and planar view The arc surface has the same curvature as that of the cut surface 1a. For example, the existing fluid pipe 1 is cut into a straight line by a cutting tool such as a chain saw, and the anticorrosion cover is held in contact with the cut surface. Also good.

また、前記実施例では、操作棒８を突片５ｅの貫通孔５ｈを介して突片５ｆの螺子孔５ｉに螺着したが、突片５ｅに螺子孔５ｉを形成することによって操作棒８が防錆フレーム５ａを上端部のみで保持するようにし、操作棒８が既設流体管１の切断面１ａの防錆時に既設流体管１内の流体からの水流圧を受けないようにしてもよい。   In the above embodiment, the operating rod 8 is screwed into the screw hole 5i of the protruding piece 5f through the through hole 5h of the protruding piece 5e. However, the operating rod 8 is formed by forming the screw hole 5i in the protruding piece 5e. The rust prevention frame 5a may be held only by the upper end portion, and the operation rod 8 may be prevented from receiving water flow pressure from the fluid in the existing fluid pipe 1 when the cutting surface 1a of the existing fluid pipe 1 is rusted.

また、前記実施例では、防錆カバー５を計５箇所で係止片１０により係止したが、係止片１０の数は防錆カバー５の既設流体管１の切断面１ａに対する防錆を保持することができれば特に限定しない。   Moreover, in the said Example, although the antirust cover 5 was latched by the latching piece 10 in five places in total, the number of the latching pieces 10 is antirusting with respect to the cut surface 1a of the existing fluid pipe | tube 1 of the antirust cover 5. If it can hold | maintain, it will not specifically limit.

１ 既設流体管
１ａ 切断面
２ 筐体
３ａ 弁体
４ 作業ケース
５ 防錆カバー
５ｂ 防錆ゴム
５ｇ 当接面
５ｈ 貫通孔
５ｉ 螺子孔
６ 操作部
６ａ 基台（軸方向移動手段）
７ 防錆装置
８ 操作棒
８ｂ 螺合部（保持部）
１０ 係止片（係止手段）
１１ 係止部 DESCRIPTION OF SYMBOLS 1 Existing fluid pipe 1a Cut surface 2 Housing | casing 3a Valve body 4 Work case 5 Antirust cover 5b Antirust rubber 5g Contact surface 5h Through-hole 5i Screw hole 6 Operation part 6a Base (Axial movement means)
7 Rust prevention device 8 Operation rod 8b Threaded part (holding part)
10 Locking piece (locking means)
11 Locking part

Claims (5)

既設流体管を密封した筐体と、該筐体の上部を開閉可能とする弁体と、前記筐体に対して前記弁体を介して密封状に接続される作業ケースと、該作業ケース内に配置された環状の防錆カバーと、を備え、前記筐体内において、不断流状態で切断された前記既設流体管の切断面に前記防錆カバーを当接保持させることで、前記切断面を防錆する防錆装置であって、
一端が前記作業ケース内に、他端が該作業ケース外の上方にそれぞれ配置され、該作業ケースの上下方向及び前記既設流体管の軸方向に移動可能な操作棒を備え、
該操作棒は前記防錆カバーを保持する保持部を備え、
前記操作棒を操作することで、前記保持部で保持された前記防錆カバーを前記切断面の全面に当接保持させることを特徴とする防錆装置。 A case in which an existing fluid pipe is sealed; a valve body capable of opening and closing an upper portion of the case; a work case connected in a sealed manner to the case via the valve body; An annular rust-proof cover disposed in the casing, and in the housing, the rust-proof cover is brought into contact with and held by a cut surface of the existing fluid pipe cut in an uninterrupted flow state. A rust prevention device for preventing rust,
One end is disposed in the work case and the other end is disposed above and outside the work case, and includes an operation rod movable in the vertical direction of the work case and the axial direction of the existing fluid pipe,
The operation rod includes a holding portion for holding the antirust cover,
By operating the operation rod, the rust preventive device held by the holding portion is brought into contact with and held on the entire cut surface. 前記保持部は、前記操作棒に形成された、前記防錆カバーに螺合する螺合部を備えることを特徴とする請求項１に記載の防錆装置。   The rust preventive device according to claim 1, wherein the holding portion includes a screwing portion that is formed on the operation rod and is screwed with the rust preventive cover. 前記筐体の前記切断面近傍には、該切断面に当接した前記防錆カバーを係止する、前記筐体の外方から操作可能な係止手段が備えられていることを特徴とする請求項１または２に記載の防錆装置。   In the vicinity of the cut surface of the casing, there is provided a locking means for locking the rust-proof cover that is in contact with the cut surface and operable from the outside of the casing. The rust preventive device according to claim 1 or 2. 前記防錆カバーは、前記係止手段が当接する当接面を備えていることを特徴とする請求項３に記載の防錆装置。   The rust preventive apparatus according to claim 3, wherein the rust preventive cover includes a contact surface with which the locking means contacts. 前記操作棒が前記既設流体管の軸方向と平行にスライド移動可能な軸方向移動手段を備えることを特徴とする請求項１ないし４のいずれかに記載の防錆装置。   The rust preventive device according to any one of claims 1 to 4, wherein the operating rod includes an axial direction moving means that is slidable parallel to an axial direction of the existing fluid pipe.
JP2009100600A 2009-04-17 2009-04-17 Rust prevention device Expired - Fee Related JP5306890B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03272390A (en) * 1990-03-19 1991-12-04 Cosmo Koki Kk Method for installing fluid control valve in non-water failure state and sealing connection device therefor
JP2006112541A (en) * 2004-10-15 2006-04-27 Cosmo Koki Co Ltd Cut opening anti-rust method in installation construction of insertion body
JP2007046680A (en) * 2005-08-09 2007-02-22 Cosmo Koki Co Ltd Swash member installation device
JP2009008120A (en) * 2007-06-26 2009-01-15 Waterworks Technology Development Organization Co Ltd Apparatus connection structure for existing fluid pipe and method for installing constant flow type fluid apparatus
JP2009210065A (en) * 2008-03-05 2009-09-17 Cosmo Koki Co Ltd Water restrictor installation device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03272390A (en) * 1990-03-19 1991-12-04 Cosmo Koki Kk Method for installing fluid control valve in non-water failure state and sealing connection device therefor
JP2006112541A (en) * 2004-10-15 2006-04-27 Cosmo Koki Co Ltd Cut opening anti-rust method in installation construction of insertion body
JP2007046680A (en) * 2005-08-09 2007-02-22 Cosmo Koki Co Ltd Swash member installation device
JP2009008120A (en) * 2007-06-26 2009-01-15 Waterworks Technology Development Organization Co Ltd Apparatus connection structure for existing fluid pipe and method for installing constant flow type fluid apparatus
JP2009210065A (en) * 2008-03-05 2009-09-17 Cosmo Koki Co Ltd Water restrictor installation device

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