JP2017110491A - Connection structure for pumping pipe - Google Patents

Connection structure for pumping pipe Download PDF

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JP2017110491A
JP2017110491A JP2017001552A JP2017001552A JP2017110491A JP 2017110491 A JP2017110491 A JP 2017110491A JP 2017001552 A JP2017001552 A JP 2017001552A JP 2017001552 A JP2017001552 A JP 2017001552A JP 2017110491 A JP2017110491 A JP 2017110491A
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joint
flange
pressure feeding
flanges
bolt
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石井　孝治
Koji Ishii
孝治 石井
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Shibasin Shokai Co Ltd
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Shibasin Shokai Co Ltd
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Priority to JP2017004540U priority patent/JP3214439U/en
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  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

PROBLEM TO BE SOLVED: To simplify a work to attach or detach a joint in coupling a pumping pipe for pumping ready mixed concrete, to shorten the time for the work to attach or detach the joint, and to improve work efficiency in casting the concrete.SOLUTION: The present invention relates to a connection structure for pumping pipes 2 such that a pair of pumping pipes 2, 2 each having a flange 3 formed and an O ring 4 installed in an annular groove 33 formed in an outer end face 31 of a flange 3 are arranged with flanges 3, 3 made to abut, a joint 5 comprising an upper member 51 and a lower member 52 stores, in a recessed storage part 50, a projection part 30 composed of the two abutting flanges 3, 3, and the projection part 30 is retained directly with the joint 5 therein.SELECTED DRAWING: Figure 1

Description

本発明は、コンクリートの打設において、生コンクリートを打設箇所へ圧送するための圧送管を連結するための連結構造及びジョイントに関する。   The present invention relates to a connection structure and a joint for connecting a pumping pipe for pumping ready-mixed concrete to a placement site in placing concrete.

従来から生コンクリートを圧送するための圧送管を連結するための連結構造として、鉄やステンレス製の金属管やフレキシブルなホースを圧送管として用い、圧送管同士を夫々の圧送管の端部に設けたフランジ同士を当接させ、半円形状に分割されて開閉自在なジョイントであって、上ホルダと下ホルダの夫々にシールパッキンを介装させたジョイントで、シールパッキンを介して両フランジを挟圧して圧送管を連結する構造が採用されていた（特許文献１）。   Conventionally, as a connecting structure for connecting pressure feeding pipes for pressure-feeding ready-mixed concrete, iron or stainless steel metal pipes or flexible hoses are used as pressure feeding pipes, and the pressure feeding pipes are provided at the end of each pressure feeding pipe. The flanges are in contact with each other and split into semi-circular shapes that can be freely opened and closed. The joints in which the upper and lower holders are provided with seal packings sandwich the flanges via the seal packings. A structure in which the pressure feeding pipe is connected by pressing is employed (Patent Document 1).

又、図８に示すように、圧送管１１の端部外周に亘ってフランジ１１１を設け、フランジ１１１を含む端面１１０同士を当接させ、当接部分において、圧送管１１のフランジ１１１の外側面の外周に亘って円形パッキン１２を装着してシールし、半円形状に分割されて開閉自在なジョイント１３でパッキン１２と共にフランジ１１１を挟持して圧送管１１を連結する構造も採用されていた。   Further, as shown in FIG. 8, a flange 111 is provided over the outer periphery of the end of the pressure feeding tube 11, the end surfaces 110 including the flange 111 are brought into contact with each other, and the outer surface of the flange 111 of the pressure feeding tube 11 is brought into contact. A structure is also employed in which a circular packing 12 is attached and sealed over the outer periphery, and the pressure-feed pipe 11 is connected by sandwiching the flange 111 together with the packing 12 by a joint 13 that is divided into a semicircular shape and can be freely opened and closed.

このようなジョイントは、主に鋳鉄製であって、半円形状の部材の一端同士をピンで回動自在に支持し、一方の半円形状の部材の他端に回動自在に支持されたボルトを他方の半円形状の他端に形成された溝にボルトを挿入してナットで締結することによりジョイントを締め、圧送管を連結する構造であるので、打設箇所の移動に伴って、その都度、ナットの締めと緩め、ジョイントの開閉、パッキンの着脱を行っていた。   Such a joint is mainly made of cast iron, and rotatably supports one end of a semicircular member with a pin, and is rotatably supported on the other end of one semicircular member. The bolt is inserted into the groove formed on the other semicircular other end and the joint is tightened by fastening with a nut, and the pumping pipe is connected. Each time, nuts were tightened and loosened, joints were opened and closed, and packings were attached and detached.

尚、２分割されたジョイントは、一端がピンで回動自在に支持され他端をボルトで締結して固定する構成の他、２分割されたジョイントの夫々の半円形状の部材は分離した構成で、両端をボルトで締結して連結固定する構成も使用されていた。 In addition to the structure in which one end is rotatably supported by a pin and the other end is fastened and fixed by a bolt, the semi-circular member of each of the two divided joints is separated. And the structure which fastens both ends with a volt | bolt and was fixed is also used.

特開平１１−１７２９１８号公報Japanese Patent Laid-Open No. 11-172918

このように打設箇所を移動する場合、新たな圧送管を連結し又は／及び連結した圧送管を外す作業が必要であり、そのためにジョイントの着脱作業が必要であった。そして、連結した圧送管を外す場合には、先ず、圧送管を連結しているジョイントのナットを緩め、ジョイントを開けて圧送管から外し、円形パッキンを使用している場合には、１の圧送管をパッキンから抜き、パッキンを他の圧送管から外す作業が必要であった。又、新たな圧送管を連結する場合には、先ず、パッキンを１の圧送管の端部に装着し、他の圧送管の端部をパッキンに挿入して圧送管同士を当接させ、圧送管の接続箇所をパッキンでシールし、パッキンを挟むようにジョイントを装着して、ナットを締めて固定する作業が必要であった。   Thus, when moving a placement location, the operation | work which connects a new pumping tube and / or removes the pumping tube which connected is required, and the attachment or detachment operation | work of the joint was needed for that. When removing the connected pumping tube, first loosen the nut of the joint connecting the pumping tube, open the joint and remove it from the pumping tube, and when using a circular packing, It was necessary to remove the tube from the packing and to remove the packing from the other pumping tubes. Also, when connecting a new pumping tube, first install the packing at the end of one pumping tube, insert the end of the other pumping tube into the packing, and bring the pumping tubes into contact with each other. It was necessary to seal the connection part of the pipe with packing, attach the joint so as to sandwich the packing, and tighten the nut to fix it.

しかし、このようなジョイントの着脱作業は作業工程が多く、作業が煩雑であり、作業のために多くの時間を必要とするので、コンクリートの打設作業においては圧送管の連結及び解除は頻繁に行われるために、迅速な打設箇所の移動が出来ないという問題点があった。又、作業が煩雑で、作業者への負担が大きいという問題点があった。又、多くの作業時間が必要で、無駄な時間が多いという問題点があった。   However, such a joint attachment / detachment work has many work processes, is complicated, and requires a lot of time for the work. As a result, there was a problem that the placement site could not be moved quickly. In addition, there is a problem that the work is complicated and the burden on the worker is large. In addition, there is a problem that a lot of work time is required and there is a lot of wasted time.

又、当接させた圧送管の両フランジ及びフランジを被覆するパッキンをジョイントで挟持する構造の場合、ジョイントの幅はフランジのみを挟持する構造に比べて広くする必要があるため、又、フランジを設けず圧送管の当接部分に装着したパッキンをジョイントで挟持する構造の場合、パッキンのみで水密性を保つためにパッキンの横幅を実用的な範囲で可能な限り広くする必要があるため、鋳鉄製のジョイントが重量化し、作業者の負担が大きく、作業効率の低下という問題点があった。   Also, in the case of a structure in which both flanges of the pressure-feeding pipe abutted and the packing covering the flange are clamped by the joint, the width of the joint needs to be wider than the structure in which only the flange is clamped. In the case of a structure in which the packing attached to the abutting part of the pressure feeding pipe is not provided and the joint is clamped by the joint, the packing width needs to be as wide as possible within the practical range in order to maintain watertightness only with the packing. There is a problem in that the joint made of weight is heavy, the burden on the worker is large, and the work efficiency is lowered.

又、パッキンは消耗品であるので、交換の必要があり、特に特許文献１のようなジョイント内部に組み込み、着脱時にフランジを挟圧する構成の場合、着脱時にフランジと接触し摩耗しやすく、頻繁な交換が必要となり、コストが高くなるという問題点があった。   In addition, since the packing is a consumable part, it needs to be replaced. In particular, in a configuration in which the flange is sandwiched inside the joint as in Patent Document 1 and the flange is clamped at the time of attachment / detachment, it tends to come into contact with the flange at the time of attachment / detachment. There was a problem that replacement was necessary and the cost was high.

そこで本発明は、ジョイントを軽量化することを目的の１つとする。又、打設個所の移動を迅速に行えるようにすることを目的の１つとする。又、ジョイントの着脱作業を単純化することを目的の１つとする。又、ジョイントの着脱作業の時間の短縮化することを目的の１つとする。又、作業者の負担を軽減することを目的の１つとする。又、作業効率を向上させることを目的の１つとする。又、コンクリートの打設のコストを低廉化することを目的の１つとする。   Therefore, an object of the present invention is to reduce the weight of the joint. Another object is to make it possible to move the placement site quickly. Another object is to simplify the work of attaching and detaching the joint. Another object is to shorten the time for attaching and detaching the joint. Another purpose is to reduce the burden on the operator. Another object is to improve work efficiency. Another object is to reduce the cost of placing concrete.

上記のような課題を解決するための手段としての本発明は、フランジが形成された圧送管であって、該フランジの外側端面に形成された環状の溝にＯリングが設置された一対の圧送管が、前記フランジが当接された状態で配置され、上部材と下部材を備えて構成されたジョイントが、当接された２枚の前記フランジで構成された突出部を凹状収納部に収納して、ジョイントで直接前記突出部を挟み込んでいることを特徴とする圧送管の連結構造である。   The present invention as a means for solving the above-described problems is a pumping pipe having a flange formed therein, and a pair of pumping pumps in which an O-ring is installed in an annular groove formed on the outer end surface of the flange. The pipe is arranged in a state where the flange is in contact, and the joint configured by including an upper member and a lower member stores the protruding portion formed by the two contacted flanges in the concave storage portion. Then, the pumping pipe connecting structure is characterized in that the protruding portion is directly sandwiched by a joint.

又、上記圧送管の連結構造において、前記ジョイントが閉状態の時に、前記フランジは、前記ジョイントの内側側面が前記フランジの内側端面に接触して、対向する前記フランジ方向に押圧されていることを特徴とする圧送管の連結構造である。   Further, in the pressure feed pipe connecting structure, when the joint is in a closed state, the flange is pressed in the direction of the opposing flange with the inner side surface of the joint contacting the inner end surface of the flange. It is the connection structure of the pumping pipe characterized.

又、上記圧送管の連結構造において、前記Ｏリング同士は対向し、相互に押圧されていることを特徴とする圧送管の連結構造である。   Further, in the pressure feed tube connection structure, the O-rings are opposed to each other and are pressed against each other.

又、フランジが形成された圧送管であって、該フランジの外側端面に形成された環状の溝にＯリングが設置された一対の圧送管を、前記フランジが当接された状態に配置し、上部材と下部材を備えて構成されたジョイントで、当接された２枚の前記フランジで構成された突出部を凹状収納部に収納して、ジョイントで直接前記突出部を挟み込むことを特徴とする圧送管の連結方法である。   Also, a pair of pressure feed pipes having flanges, wherein an O-ring is installed in an annular groove formed on the outer end face of the flange, the flanges are in contact with each other, A joint comprising an upper member and a lower member, wherein the projecting portion composed of the two abutted flanges is housed in a concave housing portion, and the projecting portion is sandwiched directly by the joint. It is the connection method of the pressure feeding pipe.

又、上記圧送管の連結方法において、前記ジョイントが閉状態の時に、前記フランジは、前記ジョイントの内側側面が前記フランジの内側端面に接触して、対向する前記フランジ方向に押圧されることを特徴とする圧送管の連結方法である。   Further, in the above-described method for connecting the pressure feeding pipes, when the joint is in a closed state, the flange is pressed in the direction of the opposing flange, with the inner side surface of the joint contacting the inner end surface of the flange. It is the connection method of the pressure feeding pipe.

又、上記圧送管の連結方法において、前記Ｏリング同士は対向し、相互に押圧することを特徴とする圧送管の連結方法である。   Further, in the above-mentioned method for connecting the pressure feeding pipes, the O-rings are opposed to each other and are pressed against each other.

以上のような本発明によれば、ジョイントを軽量化することが可能となった。又、打設個所の移動を迅速に行えるようにすることが可能となった。又、ジョイントの着脱作業を単純化することが可能となった。又、ジョイントの着脱作業の時間の短縮化することが可能となった。又、作業者の負担を軽減することが可能となった。又、作業効率を向上させることが可能となった。又、コンクリートの打設のコストを低廉化することが可能となった。   According to the present invention as described above, the weight of the joint can be reduced. In addition, it has become possible to quickly move the placement site. In addition, it is possible to simplify the work of attaching and detaching the joint. In addition, it has become possible to shorten the time for attaching and detaching the joint. In addition, the burden on the worker can be reduced. In addition, work efficiency can be improved. In addition, the cost of placing concrete can be reduced.

本発明実施例要部断面図Cross section of the main part of the present invention ジョイント側面図Joint side view ジョイント正面図Joint front view ジョイント背面図Joint back view 図２Ａ−Ａ断面図2A-A sectional view 本発明実施例要部拡大図Enlarged view of the main part of the present embodiment 接続部縦断面図Connection section longitudinal section 従来技術の部分断面図Partial sectional view of the prior art

以下本発明の実施の形態を図を参照して説明する。本発明は、フランジが形成された圧送管であって、該フランジの外側端面に形成された環状の溝にＯリングが設置された一対の圧送管が、前記フランジが当接された状態で配置され、上部材と下部材を備えて構成されたジョイントが、当接された２枚の前記フランジで構成された突出部を凹状収納部に収納して、ジョイントで直接前記突出部を挟み込んでいることを特徴とする圧送管の連結構造であり、圧送管の接続構造部１は圧送管２とジョイント５を備えて構成されている。   Embodiments of the present invention will be described below with reference to the drawings. The present invention relates to a pressure feed pipe having a flange formed therein, and a pair of pressure feed pipes in which an O-ring is installed in an annular groove formed on the outer end face of the flange is disposed in a state in which the flange is in contact with the flange. The joint configured with the upper member and the lower member stores the protruding portion formed by the two flanges in contact with each other in the concave storage portion, and directly sandwiches the protruding portion with the joint. The connection structure portion 1 of the pressure feed pipe includes a pressure feed pipe 2 and a joint 5.

図１に示すように、両端が開口した円筒状の圧送管２の端部に外周に亘って外方に突出するフランジ３が形成されている。フランジ３は外側端面３１が平坦で、内側端面３２は端部方向に傾斜し、外方が細い台形状に構成されている。又、フランジ３の外側端面３１には環状の溝３３が形成され、溝３３にはＯリング４が嵌め込まれて設置されている。 As shown in FIG. 1, a flange 3 that protrudes outward is formed at the end of a cylindrical pumping tube 2 that is open at both ends. The flange 3 has a flat outer end face 31, an inner end face 32 that is inclined in the end direction, and a thin trapezoidal shape on the outer side. An annular groove 33 is formed on the outer end surface 31 of the flange 3, and the O-ring 4 is fitted in the groove 33.

圧送管２の端部同士を当接させると、フランジ３同士が当接し、圧送管２の内周を底辺、外周を上辺とし、底辺より上辺が短い突出部３０が形成される。言い換えれば、突出部３０は、縦断面視で圧送管２の外方向に縮径した形状となる。圧送管２の端部同士を当接させた時には、溝３３、３３同士が対向し、Ｏリング４、４同士が対向し、相互に押圧され、圧送管２、２同士の接続部の水密性を保つ。 When the end portions of the pressure feeding tube 2 are brought into contact with each other, the flanges 3 are brought into contact with each other, and a protruding portion 30 is formed with the inner periphery of the pressure feeding tube 2 being the bottom side and the outer periphery being the upper side, and the upper side being shorter than the bottom side. In other words, the protrusion 30 has a shape that is reduced in diameter toward the outside of the pressure feeding tube 2 in a longitudinal sectional view. When the ends of the pressure-feed tube 2 are brought into contact with each other, the grooves 33 and 33 face each other, the O-rings 4 and 4 face each other and are pressed against each other, and the water-tightness of the connection portion between the pressure-feed tubes 2 and 2 Keep.

圧送管２は両端が開口した円筒状の本体部２１に両端が開口し、一端部にフランジ３が形成された円筒状の端部材２２を溶接等により接続して形成している。尚、図示はしないが、圧送管は、一体成型された構成でもよく、円筒状の管の端部外周に別途構成した突出部を溶接等により接続して形成する構成としてもよい。 The pressure feed pipe 2 is formed by connecting a cylindrical end member 22 having both ends opened to a cylindrical main body portion 21 having both ends open and a flange 3 formed at one end thereof by welding or the like. Although not shown in the drawings, the pressure feeding pipe may be formed as an integrally molded structure, or may be formed by connecting a separately formed protrusion on the outer periphery of the end of the cylindrical pipe by welding or the like.

ジョイント５は、図１〜４に示すように、上部材５１と下部材５２の２つに分割された部材を備えて構成され、側面視で略半円形状の上部材５１の一端部に設けた連結用突出片５１１と側面視で略半円形状の下部材５２の一端部に設けた連結用突出片５２１同士をピン５３で連結し、下部材５２の他端部に設けた２枚のボルト設置用突出片５２２、５２２間にピン５６でボルト５５の一端を回動自在に設置し、上部材５１の他端部に設けた２枚のボルト挿入用突出片５１２、５１２間に構成されたボルト挿入溝５１５にボルト５５を挿入し、ボルト５５にナット５７を締結して、ボルト５５をボルト挿入溝５１５に固定し、ジョイント５を締める構成としている。   As shown in FIGS. 1 to 4, the joint 5 is configured to include a member divided into an upper member 51 and a lower member 52, and is provided at one end of the substantially semicircular upper member 51 in a side view. The connecting protrusions 511 and the connecting protrusions 521 provided at one end of the substantially semicircular lower member 52 in a side view are connected by a pin 53, and two pieces provided at the other end of the lower member 52 are connected. One end of a bolt 55 is rotatably installed with a pin 56 between the bolt installation projecting pieces 522 and 522, and is configured between two bolt insertion projecting pieces 512 and 512 provided at the other end of the upper member 51. The bolt 55 is inserted into the bolt insertion groove 515, the nut 57 is fastened to the bolt 55, the bolt 55 is fixed to the bolt insertion groove 515, and the joint 5 is tightened.

ピン５３は、リベットを用いてかしめて設置するが、頭部と反対側の端部に溝を形成して、該溝にスナップリングを嵌めて設置してもよく、又、頭部と反対側の端部に孔を形成して、該孔にピンを挿入して設置してもよい。ボルト５５はデンデンボルトを用いることが出来、ボルト５５を回動自在に支持するピン５６の構成は、リベットを用いてかしめて設置するが、頭部と反対側の端部に溝を形成して、該溝にスナップリングを嵌めて設置してもよく、又、頭部と反対側の端部に孔を形成して、該孔にピンを挿入して設置してもよい。 The pin 53 is installed by caulking using a rivet, but a groove may be formed at the end opposite to the head, and a snap ring may be fitted into the groove, or the pin 53 may be installed on the opposite side of the head. A hole may be formed at the end of the pin, and a pin may be inserted into the hole. The bolt 55 can be a denden bolt, and the pin 56 that rotatably supports the bolt 55 is caulked using a rivet, but a groove is formed at the end opposite to the head. A snap ring may be fitted in the groove, or a hole may be formed at an end opposite to the head, and a pin may be inserted into the hole.

この実施の形態では、上部材５１と下部材５２をピン５３で回動自在に連結しているので、１個のボルトの締結で閉めることが出来、後述する完全分割型のジョイントに比べて作業が容易であるので、このような構成が好ましい。 In this embodiment, the upper member 51 and the lower member 52 are rotatably connected by a pin 53, so that they can be closed by fastening one bolt, which is more work than a fully divided joint described later. Such a configuration is preferable.

又、図示はしないが、２分割されたジョイントの夫々の半円形状の部材は分離した構成で、両端をボルトで締結して連結固定する構成としてもよい。具体的には、ジョイントは、側面視で略半円形状の上部材と下部材の２つに分割された部材を備えて構成され、上部材及び下部材の夫々は、一端部に設けた２枚のボルト設置用突出片間にピンでボルトの一端を回動自在に設置し、他端部に２枚のボルト挿入用突出片を設けてボルト挿入溝を形成し、上部材に設けた２枚のボルト挿入用突出片間に構成されたボルト挿入溝に下部材に設置したボルトを挿入し、ボルトにナットを締結して、ボルトをボルト挿入溝に固定すると共に、下部材に設けた２枚のボルト挿入用突出片間に構成されたボルト挿入溝に上部材に設置したボルトを挿入し、ボルトにナットを締結して、ボルトをボルト挿入溝に固定してジョイントを締める構成としてもよい。   Although not shown, each semicircular member of the joint divided into two parts may be separated, and both ends may be fastened with bolts and connected and fixed. Specifically, the joint is configured to include a member that is divided into an approximately semicircular upper member and a lower member in a side view, and each of the upper member and the lower member is provided at one end. One end of the bolt is rotatably installed with a pin between the two bolt installation projecting pieces, two bolt insertion projecting pieces are formed on the other end portion, a bolt insertion groove is formed, and the upper member 2 A bolt installed in the lower member is inserted into a bolt insertion groove formed between the projecting pieces for inserting bolts, and a nut is fastened to the bolt to fix the bolt in the bolt insertion groove. It is good also as a structure which inserts the bolt installed in the upper member in the bolt insertion groove comprised between the protrusion pieces for bolt insertion of a sheet, fastens a nut to a bolt, fixes a bolt to a bolt insertion groove, and tightens a joint. .

更に、上部材又は下部材の両端部に設けた２枚のボルト設置用突出片間にピンでボルトの一端を回動自在に設置し、ボルトを設けていない下部材又は上部材の両端部に２枚のボルト挿入用突出片を設けてボルト挿入溝を形成する構成としてもよい。 Further, one end of the bolt is rotatably installed with a pin between the two bolt installation projecting pieces provided at both ends of the upper member or the lower member, and is attached to both ends of the lower member or the upper member not provided with the bolt. It is good also as a structure which provides two bolt insertion protrusions and forms a bolt insertion groove.

ボルト５５は、一条ねじを用いてもよいが、二条ねじや三条ねじ等の多条ねじを用いることが好ましい。このような構成とすることで、ボルトナットの締結及び緩めの作業時間が短縮され作業者性が向上するからである。   The bolt 55 may be a single thread, but it is preferable to use a multiple thread such as a double thread or a triple thread. This is because by adopting such a configuration, the work time for tightening and loosening the bolts and nuts is shortened, and the workability is improved.

圧送管２同士を確実に連結し水密性を持たせるために、圧送管２の端部同士、即ちフランジ３、３同士を可能な限り密着させることが望ましい。そこで、ジョイント５が閉状態の時に、フランジ３は、ジョイント５の内側側面５０１がフランジ３の内側端面３２に接触した状態であり、他の対向するフランジ３方向に押圧されている構成としている。 In order to reliably connect the pressure feeding pipes 2 and to have water tightness, it is desirable that the ends of the pressure feeding pipes 2, that is, the flanges 3 and 3 are as close as possible to each other. Therefore, when the joint 5 is in the closed state, the flange 3 is in a state where the inner side surface 501 of the joint 5 is in contact with the inner end surface 32 of the flange 3 and is pressed toward the other opposing flange 3.

具体的には、ジョイント５の内側の形状は、図１及び図５に示すように、内側の縦断面形状がジョイント５の外側方向に向かって狭くなる台形状の凹状収納部５０が構成され、ジョイント５の内側側面５０１のジョイント５の正面視の縦断面に対する角度はフランジ３の内側端面３２の圧送管２の側面視の縦断面に対する角度と同一に形成されている。このような構成とするとで、ボルト５５を締めるにしたがって上部材５１と下部材５２が閉じられると共にフランジ３同士の密着が強まる。 Specifically, as shown in FIGS. 1 and 5, the inner shape of the joint 5 includes a trapezoidal concave storage portion 50 whose inner longitudinal cross-sectional shape becomes narrower toward the outer direction of the joint 5. The angle of the inner side surface 501 of the joint 5 with respect to the longitudinal section in front view of the joint 5 is formed to be the same as the angle of the inner end surface 32 of the flange 3 with respect to the longitudinal section in side view of the pressure feeding tube 2. With such a configuration, as the bolt 55 is tightened, the upper member 51 and the lower member 52 are closed and the close contact between the flanges 3 is strengthened.

尚、図示はしないが、突出部を図１に示すような縦断面視で圧送管の外方向に縮径した台形状に構成すると共にジョイント５の縦断面をコの字型に形成する構成、突出部を縦断面視で長方形に構成すると共にジョイント５の凹状収納部を図１に示すような台形状に形成する構成、突出部及び凹状収納部を台形状に形成すると共に突出部の側辺を凹状収納部の側辺より緩やかな傾斜とする構成を採用することとしてもよい。   Although not shown in the figure, the projecting portion is configured in a trapezoidal shape whose diameter is reduced in the outward direction of the pumping pipe in a longitudinal sectional view as shown in FIG. 1 and the longitudinal section of the joint 5 is formed in a U-shape, The protrusion is configured to be rectangular in a longitudinal sectional view, and the concave storage portion of the joint 5 is formed in a trapezoidal shape as shown in FIG. 1, the protrusion and the concave storage portion are formed in a trapezoidal shape, and the sides of the protrusion It is good also as employ | adopting the structure which makes gradual inclination from the side of a concave storage part.

圧送管２の同士を連結する際には、一対の圧送管２の端部同士をフランジ３同士を当接させた状態に配置し、ジョイント５をナット５７を緩めてボルト５５をボルト挿入溝５１５から抜いて、上部材５１と下部材５２を開いた状態で準備する。そして、対向して当接するフランジ３、３で構成された突出部３０を覆うように上部材５１と下部材５２を閉じる。突出部３０は凹状収納部５０に収納され、上部材５１と下部材５２に直接挟まれる。ジョイント５とフランジ３、３或いは突出部３０との間には何も介在させず、直接接触し、ジョイント５で直接突出部３０を挟み込んでいる。そして、ボルト５５を回動させてボルト挿入溝５１５に挿入し、ナット５７を締める。ナット５７を締めることにより、上部材５１と下部材５２が閉じて、ジョイント５の内側側面５０１がフランジ３の内側端面３２を他のフランジ３方向に押圧し、ジョイント５により突出部３０を挟み込み、フランジ３、３同士が当接すると共にＯリング４、４同士が対向して、当接し、相互に押圧する。このようにして、圧送管２の同士が水密性を持って連結された状態として、ポンプを用いて生コンクリートを圧送管２を通して打設箇所に圧送することが出来る。 When connecting the pressure feeding pipes 2 to each other, the ends of the pair of pressure feeding pipes 2 are arranged in a state where the flanges 3 are in contact with each other, the joint 5 is loosened by the nut 57, and the bolt 55 is inserted into the bolt insertion groove 515. And the upper member 51 and the lower member 52 are prepared in an open state. And the upper member 51 and the lower member 52 are closed so that the protrusion part 30 comprised by the flanges 3 and 3 which contact | abut in opposition may be covered. The protruding portion 30 is stored in the concave storage portion 50 and is directly sandwiched between the upper member 51 and the lower member 52. Nothing is interposed between the joint 5 and the flanges 3, 3 or the projecting part 30, and the projecting part 30 is directly sandwiched between the joints 5 without direct contact. Then, the bolt 55 is rotated and inserted into the bolt insertion groove 515, and the nut 57 is tightened. By tightening the nut 57, the upper member 51 and the lower member 52 are closed, the inner side surface 501 of the joint 5 presses the inner end surface 32 of the flange 3 toward the other flange 3, and the projecting portion 30 is sandwiched by the joint 5, The flanges 3 and 3 come into contact with each other, and the O-rings 4 and 4 face each other to come into contact with each other and press each other. In this way, ready-mixed concrete can be pumped through the pumping pipe 2 to the placement site using a pump in a state where the pumping pipes 2 are connected to each other with watertightness.

圧送管２の同士の連結を外す際には、ジョイント５をナット５７を緩めてボルト５５をボルト挿入溝５１５から抜いて、上部材５１と下部材５２を開き、圧送管２からジョイント５を外す。そして、フランジ３同士の当接を解除し、圧送管２の同士の連結を外す。 When disconnecting the pressure feed pipes 2 from each other, the joint 5 is loosened and the bolt 55 is removed from the bolt insertion groove 515 to open the upper member 51 and the lower member 52, and the joint 5 is removed from the pressure feed pipe 2. . And contact | abutting of the flanges 3 is cancelled | released and the connection of the pressure feeding pipes 2 is removed.

このように、本発明によれば、圧送管２の外周にパッキンを使用しないので、圧送管２の同士を連結する際に圧送管２の連結部分にパッキンを設置し、パッキンに圧送管を挿入する必要がなく、又、圧送管２の同士の連結を外す際にパッキンから圧送管を抜き、圧送管２からパッキンを外す必要がないので、ジョイントの着脱作業を単純化すること、ジョイントの着脱作業の時間の短縮化すること、作業者の負担を軽減すること、作業効率を向上させること、打設個所の移動の迅速化、ジョイントを軽量化が可能となった。又、コンクリートの打設のコストを低廉化することが可能となった。   As described above, according to the present invention, since no packing is used on the outer periphery of the pressure feeding pipe 2, when the pressure feeding pipes 2 are connected to each other, the packing is installed at the connecting portion of the pressure feeding pipes 2 and the pressure feeding pipe is inserted into the packing. It is not necessary to remove the packing from the packing and to remove the packing from the packing when removing the connection between the pressure feeding pipes 2, simplifying the attachment / detachment of the joint, attaching / detaching the joint It has become possible to shorten the work time, reduce the burden on the worker, improve the work efficiency, speed up the movement of the placement site, and reduce the weight of the joint. In addition, the cost of placing concrete can be reduced.

圧送管２の構造は、上述のように、連結する２本の送圧管２、２の両端部に溝を形成してＯリング４を設置する構成に限定されず、図６に示すように、連結する２本の送圧管２８、２９のうち一方の送圧管２８の端部にのみ溝３３１を形成し、一方の送圧管２８の端部にのみＯリング４を設置する構成としてもよい。この場合、突出部３の端面に相互に対応する凸段部３８と凹段部３９を構成して水密性を高める構成としてもよく（図６（ａ））、突出部３の端面を平坦に構成してもよい（図６（ｂ））。 As described above, the structure of the pressure feeding pipe 2 is not limited to a configuration in which grooves are formed at both ends of the two pressure feeding pipes 2 and 2 to be connected and the O-ring 4 is installed, as shown in FIG. A configuration may be adopted in which the groove 331 is formed only at the end of one of the two pressure sending pipes 28 and 29 and the O-ring 4 is installed only at the end of one of the pressure sending pipes 28. In this case, it is good also as a structure which comprises the convex step part 38 and the concave step part 39 which mutually respond | correspond to the end surface of the protrusion part 3, and improves water-tightness (FIG. 6 (a)), and makes the end surface of the protrusion part 3 flat. You may comprise (FIG.6 (b)).

以上のような本発明は、コンクリートの打設の効率化及び迅速化を図ることが出来るので、建設業において極めて有用に利用することが出来る。   Since the present invention as described above can improve the efficiency and speed of placing concrete, it can be used very effectively in the construction industry.

１ 接続構造部
２ 圧送管
２１ 本体部
２２ 端部材
３ フランジ
３０ 突出部
３３ 溝
４ Ｏリング
５ ジョイント
５１ 上部材
５２ 下部材
５５ ボルト DESCRIPTION OF SYMBOLS 1 Connection structure part 2 Pressure feed pipe 21 Main body part 22 End member 3 Flange 30 Protrusion part 33 Groove 4 O-ring 5 Joint 51 Upper member 52 Lower member 55 Bolt

Claims (6)

フランジが形成された圧送管であって、該フランジの外側端面に形成された環状の溝にＯリングが設置された一対の圧送管が、前記フランジが当接された状態で配置され、上部材と下部材を備えて構成されたジョイントが、当接された２枚の前記フランジで構成された突出部を凹状収納部に収納して、ジョイントで直接前記突出部を挟み込んでいることを特徴とする圧送管の連結構造。   A pair of pressure feed pipes having a flange formed therein, wherein a pair of pressure feed pipes each having an O-ring installed in an annular groove formed on the outer end surface of the flange are disposed in a state where the flanges are in contact with each other. And a joint comprising a lower member, wherein the projecting portion composed of the two flanges in contact with each other is housed in a concave housing portion, and the projecting portion is directly sandwiched by the joint. Connecting structure of the pressure feeding pipe. 前記ジョイントが閉状態の時に、前記フランジは、前記ジョイントの内側側面が前記フランジの内側端面に接触して、対向する前記フランジ方向に押圧されていることを特徴とする請求項１に記載の圧送管の連結構造。   2. The pressure feeding according to claim 1, wherein when the joint is in a closed state, the flange is pressed in the direction of the opposing flange, with the inner side surface of the joint contacting the inner end surface of the flange. Tube connection structure. 前記Ｏリング同士は対向し、相互に押圧されていることを特徴とする請求項１又は２に記載の圧送管の連結構造。 The connecting structure for a pressure feeding pipe according to claim 1 or 2, wherein the O-rings face each other and are pressed against each other. フランジが形成された圧送管であって、該フランジの外側端面に形成された環状の溝にＯリングが設置された一対の圧送管を、前記フランジが当接された状態に配置し、上部材と下部材を備えて構成されたジョイントで、当接された２枚の前記フランジで構成された突出部を凹状収納部に収納して、ジョイントで直接前記突出部を挟み込むことを特徴とする圧送管の連結方法。   A pair of pressure feed pipes having a flange formed therein, wherein a pair of pressure feed pipes each having an O-ring installed in an annular groove formed on an outer end surface of the flange are arranged in contact with the flange, and the upper member And a lower member, and a projecting portion composed of the two flanges in contact with each other is housed in a concave housing portion, and the projecting portion is directly sandwiched by the joint. How to connect tubes. 前記ジョイントが閉状態の時に、前記フランジは、前記ジョイントの内側側面が前記フランジの内側端面に接触して、対向する前記フランジ方向に押圧されることを特徴とする請求項４に記載の圧送管の連結方法。   5. The pressure feeding pipe according to claim 4, wherein when the joint is in a closed state, the flange is pressed in the direction of the opposing flange, with the inner side surface of the joint contacting the inner end surface of the flange. Concatenation method. 前記Ｏリング同士は対向し、相互に押圧することを特徴とする請求項４又は５に記載の圧送管の連結方法。 6. The method of connecting pressure feeding pipes according to claim 4, wherein the O-rings face each other and press each other.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111425678A (en) * 2020-06-09 2020-07-17 浙江万华建设有限公司 Concrete pump pipe for continuous transmission

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184291U (en) * 1984-11-08 1986-06-03
JPH09196261A (en) * 1996-01-12 1997-07-29 Nkk Corp Pipe coupling structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184291U (en) * 1984-11-08 1986-06-03
JPH09196261A (en) * 1996-01-12 1997-07-29 Nkk Corp Pipe coupling structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111425678A (en) * 2020-06-09 2020-07-17 浙江万华建设有限公司 Concrete pump pipe for continuous transmission

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