JP6945305B2

JP6945305B2 - Temporary fastening jig and temporary fastening method

Info

Publication number: JP6945305B2
Application number: JP2017025631A
Authority: JP
Inventors: 坂井　裕貴; 裕貴坂井; 篤志柿沼
Original assignee: JFE Metal Products and Engineering Inc
Current assignee: JFE Metal Products and Engineering Inc
Priority date: 2017-02-15
Filing date: 2017-02-15
Publication date: 2021-10-06
Anticipated expiration: 2037-02-15
Also published as: JP2018131803A; JP7254133B2; JP2021185305A; JP7430834B2; JP2023073354A

Description

本発明は、上下方向に互いに組み付けられるピースのうち下側ピースを上側ピースに仮留めする仮留め治具、及び当該仮留め治具を用いて上下方向にピース同士を仮留めする仮留め方法に関する。 The present invention relates to a temporary fixing jig for temporarily fixing the lower piece to the upper piece among the pieces assembled to each other in the vertical direction, and a temporary fixing method for temporarily fixing the pieces in the vertical direction using the temporary fixing jig. ..

従来、立坑を構築する際、土留め壁体を構成するために立坑を掘り下げていくごとに上から下へと立坑の壁面に沿って連結されていくライナープレート（ピース）が知られている。ピースの外周縁は、フランジによって囲まれており、当該フランジのうち上下のフランジには複数の孔が形成されている。
ピースによる土留め壁体は、例えば、地盤面を浅く掘り下げて形成した掘削穴の内壁面を覆って最上段のピースによる壁体を設置する。その後、設置した上側ピースの下方に下側ピースを、地盤面をさらに掘り下げながら掘削穴の掘削内壁面を覆うようにして順次連結していく（例えば、特許文献１参照。）。 Conventionally, when constructing a shaft, a liner plate (piece) is known in which each time the shaft is dug down to form a retaining wall, the shaft is connected from top to bottom along the wall surface of the shaft. The outer peripheral edge of the piece is surrounded by flanges, and a plurality of holes are formed in the upper and lower flanges of the flanges.
For the earth retaining wall body by the piece, for example, the wall body by the uppermost piece is installed by covering the inner wall surface of the excavation hole formed by digging the ground surface shallowly. After that, the lower piece is sequentially connected below the installed upper piece so as to cover the excavated inner wall surface of the excavation hole while further digging the ground surface (see, for example, Patent Document 1).

特開２００２−２９５１７０号公報Japanese Unexamined Patent Publication No. 2002-295170

ところで、上側ピースに下方から下側ピースを連結する場合、下側ピースにチェーンやジャッキ等を取り付けて、当該下側ピースをジャッキにより持ち上げることがある。宙吊り状態の下側ピースの上側のフランジを、上側ピースの下側のフランジに接触させて、両フランジに形成されている孔を互いに整合させる。互いに整合させた上側及び下側のフランジの孔にボルトを挿通して当該ボルトにナットを締結することで、上側及び下側ピースは、互いに連結される。
しかしながら、従来の連結方法においては、下側ピースを持ち上げるためにチェーンやジャッキ等が必要になる。また、チェーンを各ピースに取り付けたり、チェーンが取り付けられたピースをジャッキにより１枚ずつ宙吊りにしたりする作業が必要となり、作業負担が大きい。さらに、この作業には、複数の作業員が必要になっていた。 By the way, when connecting the lower piece to the upper piece from below, a chain, a jack or the like may be attached to the lower piece, and the lower piece may be lifted by the jack. The upper flange of the suspended lower piece is brought into contact with the lower flange of the upper piece to align the holes formed in both flanges with each other. The upper and lower pieces are connected to each other by inserting bolts into the holes of the upper and lower flanges aligned with each other and fastening nuts to the bolts.
However, in the conventional connecting method, a chain, a jack, or the like is required to lift the lower piece. Further, it is necessary to attach the chain to each piece or to suspend the pieces to which the chain is attached one by one by a jack, which is a heavy work load. In addition, this work required multiple workers.

そこで、本発明は、上記課題に鑑みてなされたものであり、上側ピースへの下側ピースの連結を容易にする仮留め治具及び仮留め方法を提供することである。 Therefore, the present invention has been made in view of the above problems, and is to provide a temporary fixing jig and a temporary fixing method for facilitating the connection of the lower piece to the upper piece.

上記課題を解決するために、本発明は、上下方向に互いに組み付けられるピースのうち下側ピースを上側ピースに仮留めする仮留め治具であって、互いに接する前記ピース同士のフランジに形成された孔に挿通される本体部と、該本体部に連結されて前記上側ピースのフランジに当接する頭部とを備え、前記本体部は、該本体部の外周面に対して進退自在で、進出時に前記孔よりも外側に張り出す係合部材を備え、前記頭部と前記係合部材との間の間隔を調節する調節部を備えることを特徴とする。 In order to solve the above problems, the present invention is a temporary fixing jig for temporarily fixing the lower piece to the upper piece among the pieces assembled to each other in the vertical direction, and is formed on the flanges of the pieces in contact with each other. It includes a main body that is inserted into the hole and a head that is connected to the main body and abuts on the flange of the upper piece. It is characterized by including an engaging member projecting outward from the hole and an adjusting portion for adjusting the distance between the head and the engaging member.

また、前記調節部は、外周面に第１ネジ山が形成された前記頭部の軸部と、該軸部を収容し、内周面に前記第１ネジ山が係合する第２ネジ山が形成された前記本体部の収容部とを備えることが好ましい。 Further, the adjusting portion accommodates the shaft portion of the head having the first screw thread formed on the outer peripheral surface and the shaft portion, and the second screw thread in which the first screw thread engages with the inner peripheral surface. It is preferable to provide the accommodating portion of the main body portion in which the above-mentioned body is formed.

また、前記調節部は、円筒状に形成されて内周面に第１ネジ山が形成された前記頭部と、前記第１ネジ山が係合する第２ネジ山が形成された外周面を有する前記本体部とを備えることが好ましい。 Further, the adjusting portion has a head having a cylindrical shape and a first thread formed on the inner peripheral surface, and an outer peripheral surface having a second screw thread on which the first screw thread engages. It is preferable to include the main body portion having the main body.

また、前記本体部は、前記係合部材に係合して当該係合部材を前記本体部の内部から外部に向かって張り出すように付勢する付勢機構を備えることが好ましい。 Further, it is preferable that the main body portion is provided with an urging mechanism that engages with the engaging member and urges the engaging member so as to project from the inside of the main body portion toward the outside.

また、一端において前記係合部材に接触して該係合部材を退避させる押圧部材を備えることが好ましい。 Further, it is preferable to provide a pressing member that comes into contact with the engaging member at one end and retracts the engaging member.

また、前記係合部材の進退を操作する回転式の操作部と、一端において前記操作部に連結され、他端において前記係合部材に係合して前記操作部の回転を前記係合部材の進退運動に変換する連結部とを備えることが好ましい。 Further, a rotary operation unit that operates the advance / retreat of the engaging member is connected to the operating portion at one end, and the engaging member is engaged with the engaging member at the other end to rotate the operating portion of the engaging member. It is preferable to provide a connecting portion that converts the forward / backward movement.

さらに、上記課題を解決するために、本発明は、仮留め治具を用いて前記上側ピースに前記下側ピースを仮留めする仮留め方法であって、前記上側ピースに前記下側ピースを接近させて前記フランジそれぞれに形成された前記孔を互いに整合させる工程と、互いに整合した前記孔に前記仮留め治具を挿通して、前記係合部材を前記下側ピースの前記フランジに係合させる工程と、を備えることを特徴とする。 Further, in order to solve the above problems, the present invention is a temporary fastening method in which the lower piece is temporarily fastened to the upper piece using a temporary fastening jig, and the lower piece is brought close to the upper piece. In the step of aligning the holes formed in the flanges with each other, and inserting the temporary fixing jig into the holes aligned with each other, the engaging member is engaged with the flange of the lower piece. It is characterized by having a process.

また、前記係合部材が前記下側ピースの前記フランジに係合した状態において、前記上側ピース及び前記下側ピースを互いに接触させて、前記調節部を調節して前記頭部と前記係合部材との間隔を狭めて前記フランジを前記頭部と前記係合部材との間で挟持する工程を備えることが好ましい。 Further, in a state where the engaging member is engaged with the flange of the lower piece, the upper piece and the lower piece are brought into contact with each other, and the adjusting portion is adjusted to adjust the head and the engaging member. It is preferable to provide a step of sandwiching the flange between the head and the engaging member by narrowing the distance between the flange and the flange.

本発明により、上側ピースへの下側ピースの連結が容易になる。 The present invention facilitates the connection of the lower piece to the upper piece.

上側ピースに下側ピースを仮留めした状態を示す図である。It is a figure which shows the state which the lower piece is temporarily fastened to the upper piece. 第１の実施の形態に係る仮留め治具の構成を説明するための図である。It is a figure for demonstrating the structure of the temporary fixing jig which concerns on 1st Embodiment. 図２に示す仮留め治具により下側ピースを上側ピースに仮留めする方法を説明するための図である。It is a figure for demonstrating the method of temporarily fixing a lower piece to an upper piece by the temporary fixing jig shown in FIG. 仮留め方法の工程を説明するための部分拡大図である。It is a partially enlarged view for demonstrating the process of a temporary fastening method. 第２の実施の形態に係る仮留め治具の構成を説明するための図である。It is a figure for demonstrating the structure of the temporary fixing jig which concerns on 2nd Embodiment. 第３の実施の形態に係る仮留め治具の構成を説明するための図である。It is a figure for demonstrating the structure of the temporary fixing jig which concerns on 3rd Embodiment.

本発明の好ましい実施の形態について、図面を参照しながら説明する。なお、以下に示す実施の形態は一例であり、本発明の範囲において、種々の実施の形態をとりうる。
＜第１の実施の形態＞
図１は、上側ピースに下側ピースを仮留めした状態を示す図である。図２は、第１の実施の形態に係る仮留め治具の構成を説明するための図であり、図２（ａ）は、仮留め治具を周面側から見た部分透視図であり、図２（ｂ）は、仮留め治具の本体部の平面図であり、図２（ｃ）は、本体部を周面側から見た部分透視図であり、図２（ｄ）は、仮留め治具の頭部の側面図である。 A preferred embodiment of the present invention will be described with reference to the drawings. The embodiments shown below are examples, and various embodiments can be taken within the scope of the present invention.
<First Embodiment>
FIG. 1 is a diagram showing a state in which the lower piece is temporarily fastened to the upper piece. FIG. 2 is a diagram for explaining the configuration of the temporary fastening jig according to the first embodiment, and FIG. 2A is a partial perspective view of the temporary fastening jig as viewed from the peripheral surface side. 2 (b) is a plan view of the main body of the temporary fastening jig, FIG. 2 (c) is a partial perspective view of the main body as viewed from the peripheral surface side, and FIG. 2 (d) is a partial perspective view. It is a side view of the head of a temporary fixing jig.

図１に示すように、仮留め治具１００は、例えば立坑を掘削していく際に立坑の内壁面に沿って土留め壁体を構成するライナープレート（ピース）同士を、立坑の軸方向に連結するために一時的に仮留めするものである。なお、土留め壁体は、立坑を上から下へと掘り下げていきながら上側ライナープレート（上側ピース）Ｐ１に、下方から下側ライナープレート（下側ピース）Ｐ２を連結していくことによる、いわゆる逆巻き工法により構築されていく。
説明の便宜上、仮留め治具１００が仮留めする上側ピースＰ１及び下側ピースＰ２の構成についてまず説明する。なお、上側ピースＰ１及び下側ピースＰ２の構成は同じであるため両者をまとめて説明する。
図１に示すように、上側ピースＰ１及び下側ピースＰ２はそれぞれ、立坑の内面に沿って設けられるものであり、立坑の内面に面するプレートＰ１１，Ｐ２１と、プレートＰ１１，Ｐ２１の縁部に立設されたフランジＰ１２，Ｐ１３；Ｐ２２，Ｐ２３とを備える。 As shown in FIG. 1, in the temporary fastening jig 100, for example, when excavating a shaft, liner plates (pieces) constituting the earth retaining wall body along the inner wall surface of the shaft are placed in the axial direction of the shaft. It is temporarily fastened for connection. The earth retaining wall is a so-called earth retaining wall formed by connecting the lower liner plate (lower piece) P2 to the upper liner plate (upper piece) P1 while digging down the shaft from the top to the bottom. It will be constructed by the reverse winding method.
For convenience of explanation, the configuration of the upper piece P1 and the lower piece P2 temporarily fastened by the temporary fixing jig 100 will be described first. Since the upper piece P1 and the lower piece P2 have the same configuration, both will be described together.
As shown in FIG. 1, the upper piece P1 and the lower piece P2 are provided along the inner surface of the shaft, respectively, and are provided on the plates P11 and P21 facing the inner surface of the shaft and the edges of the plates P11 and P21. The flanges P12 and P13; P22 and P23 are provided upright.

プレートＰ１１，Ｐ２１は、平面視矩形状に形成されており、例えば、鋼板をその短手方向に沿って波形状に湾曲させると共に、その長手方向に沿って円弧状に湾曲させて形成したものである。また、プレートＰ１１，Ｐ２１は、波形状又は円弧形状に湾曲させて形成したものに限られず、平板状に形成されていてもよい。
フランジＰ１２，Ｐ２２は、プレートＰ１１，Ｐ２１の長手側の２つの縁部に設けられており、プレートＰ１１，Ｐ２１に対して立設されている（以下、「長手フランジ」ともいう。）。上側ピースＰ１の長手フランジＰ１２及び下側ピースＰ２の長手フランジＰ２２のそれぞれには、立坑の軸線方向（高さ方向）に隣接する上側及び下側ピースＰ１，Ｐ２同士を互いに連結するボルトが挿通される複数の孔Ｐ１２ａ，Ｐ２２ａが、長手フランジＰ１２，Ｐ２２の延在方向に沿って形成されている。
フランジＰ１３，Ｐ２３は、プレートＰ１１，Ｐ２１の短手側の２つの縁部に設けられており、プレートＰ１１，Ｐ２１対して立設されている（以下、「短手フランジ」ともいう。）。短手フランジＰ１３，Ｐ２３のそれぞれには、周方向に隣接する上側ピースＰ１及び下側ピースＰ２同士を互いに連結するボルトが挿通される複数の孔Ｐ１３ａ，Ｐ２３ａが、短手フランジＰ１３，Ｐ２３の延在方向に沿って形成されている。 The plates P11 and P21 are formed in a rectangular shape in a plan view. For example, the plates are formed by bending a steel plate in a wavy shape along its lateral direction and in an arc shape along its longitudinal direction. be. Further, the plates P11 and P21 are not limited to those formed by being curved in a wavy shape or an arc shape, and may be formed in a flat plate shape.
The flanges P12 and P22 are provided at two edges on the longitudinal side of the plates P11 and P21, and are erected with respect to the plates P11 and P21 (hereinafter, also referred to as "longitudinal flanges"). Bolts for connecting the upper and lower pieces P1 and P2 adjacent to each other in the axial direction (height direction) of the shaft are inserted into each of the longitudinal flange P12 of the upper piece P1 and the longitudinal flange P22 of the lower piece P2. A plurality of holes P12a and P22a are formed along the extending direction of the longitudinal flanges P12 and P22.
The flanges P13 and P23 are provided on the two edges of the plates P11 and P21 on the short side, and are erected with respect to the plates P11 and P21 (hereinafter, also referred to as "short flanges"). In each of the short flanges P13 and P23, a plurality of holes P13a and P23a through which bolts connecting the upper piece P1 and the lower piece P2 adjacent to each other in the circumferential direction are inserted are formed, and the short flanges P13 and P23 are extended. It is formed along the direction of presence.

［仮留め治具の構成］
仮留め治具１００は、鋼製であり、図２（ａ）に示すように、立坑の上下方向に互いに連結される上側ピースＰ１及び下側ピースＰ２の互いに接する長手フランジＰ１２，Ｐ２２に形成された孔Ｐ１２ａ，Ｐ２２ａに挿通される本体部１と、当該本体部１に連結されて上側ピースＰ１のフランジＰ１２の内面に当接する頭部４と、本体部１と頭部４との間隔ｄを調節する回転式の調節部６とを備える。 [Structure of temporary fastening jig]
The temporary fastening jig 100 is made of steel and is formed on the longitudinal flanges P12 and P22 of the upper piece P1 and the lower piece P2 which are connected to each other in the vertical direction of the shaft and are in contact with each other as shown in FIG. 2A. The distance d between the main body 1 inserted through the holes P12a and P22a, the head 4 connected to the main body 1 and abutting on the inner surface of the flange P12 of the upper piece P1, and the distance d between the main body 1 and the head 4 is set. A rotary adjusting unit 6 for adjusting is provided.

（本体部）
本体部１は、図２（ａ）〜（ｃ）に示すように、鋼製であり略円筒状に形成されている。上側及び下側ピースＰ１，Ｐ２それぞれの長手フランジＰ１２，Ｐ２２の孔Ｐ１２ａ，Ｐ２２ａへの挿入方向Ｉにおける本体部１の先端側は、本体部１の中心に向かって傾斜した傾斜部１ａを有する。
本体部１は、上側及び下側ピースＰ１，Ｐ２それぞれの長手フランジＰ１２，Ｐ２２における孔Ｐ１２ａ，Ｐ２２ａに挿通される。本体部１は、その中央部に軸線ｘに沿って形成された収容部１１と、外周面１ｂに対して進退自在な係合部材１３とを備えている。
収容部１１は、後述する頭部４の軸部４３を収容する。収容部１１の内周面には、ネジ山（例えば、雌ネジ山）１１ａが形成されている。 (Main body)
As shown in FIGS. 2A to 2C, the main body 1 is made of steel and is formed in a substantially cylindrical shape. The tip end side of the main body 1 in the insertion direction I of the longitudinal flanges P12 and P22 of the upper and lower pieces P1 and P2 into the holes P12a and P22a has an inclined portion 1a inclined toward the center of the main body 1.
The main body 1 is inserted into holes P12a and P22a in the longitudinal flanges P12 and P22 of the upper and lower pieces P1 and P2, respectively. The main body 1 includes an accommodating portion 11 formed at the center thereof along the axis x, and an engaging member 13 that can move forward and backward with respect to the outer peripheral surface 1b.
The accommodating portion 11 accommodates the shaft portion 43 of the head 4 described later. A screw thread (for example, a female screw thread) 11a is formed on the inner peripheral surface of the accommodating portion 11.

係合部材１３は、鋼板により形成されていて、本体部１の外周面に互いに等間隔を置いて設けられている。図示の実施の形態において、係合部材１３は、４つ設けられているが、係合部材１３の数及び配置する間隔は、任意に設定することができる。
係合部材１３は、本体部１の傾斜部１ａ側から挿入方向Ｉとは反対側に斜め外側に延在するように本体部１の外周面１ｂから張り出している。係合部材１３は、斜めに張り出す部分１３ａに連続して本体部１の外周面１ｂに対して垂直に延びて頭部４を臨む平坦面１３ｂを有する。平坦面１３ｂは、下側ピースＰ２の上側の長手フランジＰ２２の内面に当接する。
係合部材１３は、本体部１の外周面１ｂに形成された開口（図示せず。）に進退自在に収容されている。係合部材１３は、例えば、傾斜部１ａ側の一端が回動可能に本体部１の内部において軸支されている。係合部材１３は、本体部１の内部に設けられた、例えばバネ等の付勢手段によって付勢されて、軸支された点を中心に本体部１の外周面１ｂから張り出している。係合部材１３は、外力がかけられていない状態（自然状態）においては、本体部１の外周面１ｂから外側に張り出して（進出して）おり、外力がかけられた状態（負荷状態）においては、本体部１の内部に部分的に引き込む（退避する）ようになっている。
なお、係合部材１３の付勢手段は、バネに限られず公知の付勢手段を使用することができる。 The engaging member 13 is made of a steel plate and is provided on the outer peripheral surface of the main body 1 at equal intervals. In the illustrated embodiment, four engaging members 13 are provided, but the number of engaging members 13 and the intervals at which they are arranged can be arbitrarily set.
The engaging member 13 projects from the outer peripheral surface 1b of the main body 1 so as to extend diagonally outward from the inclined portion 1a side of the main body 1 to the side opposite to the insertion direction I. The engaging member 13 has a flat surface 13b that is continuous with the obliquely projecting portion 13a and extends perpendicularly to the outer peripheral surface 1b of the main body 1 and faces the head 4. The flat surface 13b abuts on the inner surface of the upper longitudinal flange P22 of the lower piece P2.
The engaging member 13 is housed in an opening (not shown) formed in the outer peripheral surface 1b of the main body 1 so as to be able to move forward and backward. For example, one end of the engaging member 13 on the inclined portion 1a side is rotatably supported inside the main body portion 1. The engaging member 13 is urged by an urging means such as a spring provided inside the main body 1, and projects from the outer peripheral surface 1b of the main body 1 around a pivotally supported point. The engaging member 13 projects (advances) outward from the outer peripheral surface 1b of the main body 1 in a state where no external force is applied (natural state), and in a state where an external force is applied (load state). Is designed to be partially retracted (retracted) inside the main body 1.
The urging means of the engaging member 13 is not limited to the spring, and a known urging means can be used.

（頭部）
図２（ｄ）に示すように、頭部４は、当接部４１と、当該当接部４１に一体に形成された軸部４３とを備える。
当接部４１は、本体部１を臨み軸部４３が一体に形成された当接面４１ａを有する。当接面４１ａは、仮留め治具１００が上側及び下側ピースＰ１，Ｐ２の長手フランジＰ１２，Ｐ２２の孔Ｐ１２ａ，Ｐ２２ａに挿入された状態において、上側ピースＰ１の下側の長手フランジＰ１２の内面に当接する。なお、当接面４１ａは、係合部材１３の平坦面１３ｂと略平行になっている。
軸部４３は、当接部４１の外径よりも小さい外径を有し、本体部１の収容部１１内に収容される。軸部４３の外周面には、ネジ山（例えば、雄ネジ山）４３ａが形成されている。軸部４３の雄ネジ山４３ａが、本体部１の収容部１１の雌ネジ山１１ａと螺合して、本体部１と頭部４とが互いに連結される。 (head)
As shown in FIG. 2D, the head portion 4 includes a contact portion 41 and a shaft portion 43 integrally formed with the contact portion 41.
The contact portion 41 has a contact surface 41a on which the shaft portion 43 is integrally formed so as to face the main body portion 1. The contact surface 41a is an inner surface of the lower longitudinal flange P12 of the upper piece P1 in a state where the temporary fastening jig 100 is inserted into the holes P12a and P22a of the longitudinal flanges P12 and P22 of the upper and lower pieces P1 and P2. Contact with. The contact surface 41a is substantially parallel to the flat surface 13b of the engaging member 13.
The shaft portion 43 has an outer diameter smaller than the outer diameter of the contact portion 41, and is accommodated in the accommodating portion 11 of the main body portion 1. A thread (for example, a male thread) 43a is formed on the outer peripheral surface of the shaft portion 43. The male thread 43a of the shaft portion 43 is screwed with the female thread 11a of the accommodating portion 11 of the main body portion 1, and the main body portion 1 and the head portion 4 are connected to each other.

（調節部）
調節部６は、本体部１と頭部４との間の間隔、具体的には、本体部１の係合部材１３における平坦面１３ｂと、頭部４の当接部４１における当接面４１ａとの間の間隔ｄを調節する。調節部６は、雄ネジ山４３ａが形成された頭部４の軸部４３と、当該軸部４３を収容し、雄ネジ山４３ａが係合する雌ネジ山１１ａが内周面に形成された本体部１の収容部１１とを備える。より具体的には、調節部６は、本体部１の収容部１１における雌ネジ山１１ａと、頭部４の軸部４３における雄ネジ山４３ａとにより構成されている。
調節部６は、軸線ｘを中心にして頭部４を一方向に回転させることで、頭部４の軸部４３が本体部１の収容部１１に対して進入又は進出して、間隔ｄを狭めたり広げたりするようになっている。 (Adjustment part)
The adjusting portion 6 is the distance between the main body portion 1 and the head portion 4, specifically, the flat surface 13b of the engaging member 13 of the main body portion 1 and the contact surface 41a of the contact portion 41 of the head portion 4. Adjust the distance d between and. The adjusting portion 6 accommodates the shaft portion 43 of the head 4 on which the male screw thread 43a is formed and the shaft portion 43, and the female screw thread 11a with which the male screw thread 43a engages is formed on the inner peripheral surface. A housing portion 11 of the main body portion 1 is provided. More specifically, the adjusting portion 6 is composed of a female screw thread 11a in the accommodating portion 11 of the main body portion 1 and a male screw thread 43a in the shaft portion 43 of the head portion 4.
The adjusting unit 6 rotates the head portion 4 in one direction around the axis x, so that the shaft portion 43 of the head portion 4 enters or advances with respect to the accommodating portion 11 of the main body portion 1, and the interval d is set. It is designed to be narrowed or widened.

［仮留めの方法］
次に、図３及び図４を用いて、仮留め治具１００による上側ピースＰ１に下側ピースＰ２を仮留めする方法について説明する。
図３は、仮留め治具により下側ピースを上側ピースに仮留めする方法を説明するための図である。図４は、仮留め治具による下側ピースを上側ピースに仮留め方法する工程を説明するための拡大図であり、図４（ａ）は、上側及び下側ピースに挿通する前の仮留め治具を示す図であり、図４（ｂ）は、挿通途中の仮留め治具を示す図であり、図４（ｃ）は、挿通後の仮留め治具を示す図であり、図４（ｄ）は、調節部を調節した状態の仮留め治具を示す図である。
なお、図３に示すように、上側ピースＰ１と下側ピースＰ２とは、それぞれの短手フランジＰ１３，Ｐ２３の位置がずれるように、いわゆる千鳥状に配置されている。 [Temporary fastening method]
Next, a method of temporarily fixing the lower piece P2 to the upper piece P1 by the temporary fixing jig 100 will be described with reference to FIGS. 3 and 4.
FIG. 3 is a diagram for explaining a method of temporarily fixing the lower piece to the upper piece with a temporary fixing jig. FIG. 4 is an enlarged view for explaining a process of temporarily fixing the lower piece to the upper piece with a temporary fixing jig, and FIG. 4A is a temporary fixing before inserting the lower piece into the upper and lower pieces. It is a figure which shows the jig, FIG. 4 (b) is a figure which shows the temporary fixing jig in the middle of insertion, and FIG. 4 (c) is a figure which shows the temporary fixing jig after insertion, FIG. (D) is a figure which shows the temporary fixing jig in the state which adjusted the adjustment part.
As shown in FIG. 3, the upper piece P1 and the lower piece P2 are arranged in a so-called staggered shape so that the positions of the short flanges P13 and P23 are displaced from each other.

まず、図３に示すように、作業員が下側ピースＰ２を持ち上げて上側ピースＰ２に接近させる（矢印Ｆにより示す。）。次に、図４（ａ）に示すように、下側ピースＰ２の上側の長手フランジＰ２２を上側ピースＰ１の下側の長手フランジＰ１２に当接させ、上側ピースＰ１の下側の長手フランジＰ１２の孔Ｐ１２ａと、下側ピースＰ２の上側の長手フランジＰ２２の孔Ｐ２２ａとを整合させる。この状態において、下側ピースＰ２の周方向において側端部付近に形成された２箇所の孔Ｐ１２ａ，Ｐ２２ａに仮留め治具１００を挿通する。
本体部１の挿入方向Ｉにおいて先端側の傾斜部１ａ、及び係合部材１３の斜めに張り出す部分１３ａ側から挿通されるので、長手フランジＰ１２，Ｐ２２の孔Ｐ１２ａ，Ｐ２２ａへの仮留め治具１００の本体部１の挿通が容易になる。
また、仮留め治具１００は、挿通時に調節部６を回転させて、本体部１の係合部材１３と頭部４との間隔ｄが少なくとも２枚の長手フランジＰ１２，Ｐ２２の板厚よりも十分に大きいようにしておくことが好ましい。 First, as shown in FIG. 3, an operator lifts the lower piece P2 and brings it closer to the upper piece P2 (indicated by arrow F). Next, as shown in FIG. 4A, the upper longitudinal flange P22 of the lower piece P2 is brought into contact with the lower longitudinal flange P12 of the upper piece P1, and the lower longitudinal flange P12 of the upper piece P1 is brought into contact with each other. The hole P12a is aligned with the hole P22a of the upper longitudinal flange P22 of the lower piece P2. In this state, the temporary fixing jig 100 is inserted into the two holes P12a and P22a formed near the side ends in the circumferential direction of the lower piece P2.
In the insertion direction I of the main body 1, it is inserted from the inclined portion 1a on the tip end side and the obliquely projecting portion 13a side of the engaging member 13, so that it is a temporary fixing jig to the holes P12a and P22a of the longitudinal flanges P12 and P22. Insertion of the main body 1 of 100 becomes easy.
Further, in the temporary fastening jig 100, the adjusting portion 6 is rotated at the time of insertion, and the distance d between the engaging member 13 of the main body portion 1 and the head portion 4 is larger than the plate thickness of at least two longitudinal flanges P12 and P22. It is preferable to keep it large enough.

図４（ｂ）に示すように、本体部１を孔Ｐ１２ａ，Ｐ２２ａに挿通する際には、係合部材１３は、孔Ｐ１２ａ，Ｐ２２ａの内周壁に接触して本体部１の内部に付勢手段の付勢力に抗して押し込まれる（退避する）。図４（ｃ）に示すように、本体部１が孔Ｐ１２ａ，Ｐ２２ａを抜けると係合部材１３は、本体部１の内部から外部に向かって付勢されているので孔Ｐ１２ａ，Ｐ２２ａの周縁よりも外側に張り出す。
仮留め治具１００の係合部材１３の平坦面１３ｂが下側ピースＰ２の長手フランジＰ２２の内面に当接した状態において作業員が下側ピースＰ２から手を離しても、下側ピースＰ２は、上側ピースＰ１に仮留めされて宙吊りされた状態を維持する。つまり、下側ピースＰ２は、上側ピースＰ１から落下しない。以上により、仮留め治具１００による上側ピースＰ１と下側ピースＰ２との仮留めが完了する。 As shown in FIG. 4B, when the main body 1 is inserted into the holes P12a and P22a, the engaging member 13 contacts the inner peripheral walls of the holes P12a and P22a and urges the inside of the main body 1. It is pushed (evacuated) against the urging force of the means. As shown in FIG. 4C, when the main body 1 passes through the holes P12a and P22a, the engaging member 13 is urged from the inside to the outside of the main body 1 and therefore from the peripheral edge of the holes P12a and P22a. Also overhangs outward.
Even if the worker releases his hand from the lower piece P2 in a state where the flat surface 13b of the engaging member 13 of the temporary fastening jig 100 is in contact with the inner surface of the longitudinal flange P22 of the lower piece P2, the lower piece P2 remains. , Temporarily fastened to the upper piece P1 and maintained in a suspended state. That is, the lower piece P2 does not fall from the upper piece P1. As described above, the temporary fixing of the upper piece P1 and the lower piece P2 by the temporary fixing jig 100 is completed.

下側ピースＰ２が仮留めされた状態において、下側ピースＰ２と上側ピースＰ１との間には空間Ｓがある。作業者は、さらに下側ピースＰ２を少し持ち上げて長手フランジＰ２２と上側ピースＰ１の長手フランジＰ１２とを接触させて、図４（ｄ）に示すように、仮留め治具１００の頭部４の当接部４１を回す。当接部４１を回すことにより、調節部６を構成する頭部４の軸部４３を本体部１の収容部１１内に進入させる。
これにより、当接部４１の当接面４１ａと係合部材１３の平坦面１３ｂとの間の間隔ｄが狭まり、長手フランジＰ１２，Ｐ２２の肉厚にほぼ一致する。つまり、仮留め工程において、下側ピースＰ２の長手フランジＰ２２が上側ピースＰ１の長手フランジＰ１２に密接させるようにしてもよい。
仮留め治具１００により、上側ピースＰ１に対する下側ピースＰ２の仮留めは、従来、必要であったチェーンやジャッキ等を用いなくとも簡単かつ迅速に実施することができるようになる。 In a state where the lower piece P2 is temporarily fastened, there is a space S between the lower piece P2 and the upper piece P1. The operator further lifts the lower piece P2 slightly to bring the longitudinal flange P22 and the longitudinal flange P12 of the upper piece P1 into contact with each other, and as shown in FIG. 4D, the head 4 of the temporary fastening jig 100 Turn the contact portion 41. By turning the abutting portion 41, the shaft portion 43 of the head portion 4 constituting the adjusting portion 6 is brought into the accommodating portion 11 of the main body portion 1.
As a result, the distance d between the contact surface 41a of the contact portion 41 and the flat surface 13b of the engaging member 13 is narrowed, and substantially matches the wall thickness of the longitudinal flanges P12 and P22. That is, in the temporary fastening step, the longitudinal flange P22 of the lower piece P2 may be brought into close contact with the longitudinal flange P12 of the upper piece P1.
With the temporary fastening jig 100, the temporary fastening of the lower piece P2 to the upper piece P1 can be easily and quickly performed without using a chain, a jack, or the like, which has been conventionally required.

仮留め治具１００による上側及び下側ピースＰ１，Ｐ２の仮留め後、仮留め治具１００が挿通されていない長手フランジＰ１２，Ｐ２２の全ての孔Ｐ１２ａ，Ｐ２２ａにボルトＢが挿通されナットＮによって締結される。調節部６により、上側ピースＰ１の長手フランジＰ１２と下側ピースＰ２の長手フランジＰ２２とは、互いに密接させて仮留めすることができるので、ボルトＢによる上側ピースＰ１及び下側ピースＰ２の連結は容易になる。
調節部６を調節して、つまり、頭部４を回して軸部４３を収容部１１から進出させ、かつ係合部材１３を本体部１の内部に押し込んで下側ピースＰ２との係合状態を解除することで仮留め治具１００を容易に引き抜くことができる。仮留め治具１００を引き抜いた後の孔Ｐ１２ａ，Ｐ２２ａにボルトＢを挿通して、当該ボルトＢにナットＮを締結する。これにより、下側ピースＰ２の上側ピースＰ１への連結が完了する。 After the upper and lower pieces P1 and P2 are temporarily fastened by the temporary fixing jig 100, the bolts B are inserted into all the holes P12a and P22a of the longitudinal flanges P12 and P22 into which the temporary fixing jig 100 is not inserted, and the nut N is used. To be concluded. Since the longitudinal flange P12 of the upper piece P1 and the longitudinal flange P22 of the lower piece P2 can be temporarily fastened to each other by the adjusting portion 6, the upper piece P1 and the lower piece P2 can be connected by the bolt B. It will be easier.
The adjusting portion 6 is adjusted, that is, the head portion 4 is turned to advance the shaft portion 43 from the accommodating portion 11, and the engaging member 13 is pushed into the main body portion 1 to engage with the lower piece P2. The temporary fixing jig 100 can be easily pulled out by releasing the above. The bolt B is inserted into the holes P12a and P22a after the temporary fixing jig 100 is pulled out, and the nut N is fastened to the bolt B. As a result, the connection of the lower piece P2 to the upper piece P1 is completed.

［その他］
なお、調節部６を備えた仮留め治具１００は、当接部４１の当接面４１ａと係合部材１３の平坦面１３ｂとの間の間隔ｄを自由に変更することができるので、仮に、上側ピースＰ１と、下側ピースＰ２との間に補強鋼（図示せず。）を設置しなければならない場合であっても柔軟に対応することができる。
また、仮留め治具１００が上側ピースＰ１及び下側ピースＰ２を互いに締結するボルトＢ及びナットＮと同じ強度を有していれば、仮留め治具１００は、仮留め兼締結の２つの機能を担うこともできる。 [others]
Since the temporary fixing jig 100 provided with the adjusting portion 6 can freely change the distance d between the abutting surface 41a of the abutting portion 41 and the flat surface 13b of the engaging member 13, tentatively. Even when a reinforcing steel (not shown) must be installed between the upper piece P1 and the lower piece P2, it can be flexibly dealt with.
Further, if the temporary fixing jig 100 has the same strength as the bolt B and the nut N for fastening the upper piece P1 and the lower piece P2 to each other, the temporary fastening jig 100 has two functions of temporary fastening and fastening. Can also be responsible for.

また、仮留め治具１００を上側ピースＰ１及び下側ピースＰ２に挿通する場合、上側ピースＰ１の長手フランジＰ１２と下側ピースＰ２の長手フランジＰ２２との間の間隔が、仮留め治具１００の当接部４１ａの当接面４１ａと係合部材１３の平坦面１３ｂとの間の間隔ｄよりも小さければ長手フランジＰ１２，Ｐ２２を当接させる必要はない。
また、仮留め治具１００を上側ピースＰ１の下側の長手フランジＰ１２の孔Ｐ１２ａに予め挿通させておき、下方から下側ピースＰ２を持ち上げて下側ピースＰ２の上側の長手フランジＰ２２の孔Ｐ２２ａに仮留め治具１００を挿通させて上側ピースＰ１に下側ピースＰ２を仮留めしてもよい。この場合、仮留め治具１００の頭部４を上方から抑えておけばよい。 When the temporary fastening jig 100 is inserted through the upper piece P1 and the lower piece P2, the distance between the longitudinal flange P12 of the upper piece P1 and the longitudinal flange P22 of the lower piece P2 is set in the temporary fastening jig 100. If the distance d between the contact surface 41a of the contact portion 41a and the flat surface 13b of the engaging member 13 is smaller than the distance d, it is not necessary to bring the longitudinal flanges P12 and P22 into contact with each other.
Further, the temporary fastening jig 100 is inserted into the hole P12a of the lower longitudinal flange P12 of the upper piece P1 in advance, and the lower piece P2 is lifted from below to lift the lower piece P2 to the hole P22a of the upper longitudinal flange P22 of the lower piece P2. The lower piece P2 may be temporarily fastened to the upper piece P1 by inserting the temporary fixing jig 100 into the upper piece P1. In this case, the head 4 of the temporary fixing jig 100 may be held down from above.

＜第２の実施の形態＞
次に、図５を用いて第２の実施の形態に係る仮留め治具２００について説明する。特に、第１の実施の形態に係る仮留め治具１００と異なる仮留め治具２００の構成について説明する。図５は、第２の実施の形態に係る仮留め治具を説明するための図であり、図５（ａ）は、係合部材が本体部の外周面に対して張り出した状態を示す図であり、図５（ｂ）は、係合部材が本体部の内部に引き込んだ状態を示す図である。 <Second Embodiment>
Next, the temporary fixing jig 200 according to the second embodiment will be described with reference to FIG. In particular, the configuration of the temporary fixing jig 200 different from the temporary fixing jig 100 according to the first embodiment will be described. FIG. 5 is a diagram for explaining the temporary fixing jig according to the second embodiment, and FIG. 5A is a diagram showing a state in which the engaging member projects from the outer peripheral surface of the main body portion. FIG. 5B is a diagram showing a state in which the engaging member is pulled into the main body portion.

図５に示すように、仮留め治具２００は、本体部２１０と、頭部２４０と、調節部２６０とを備える。
本体部２１０は、傾斜部２１０ａとは反対側の外周面にネジ山（例えば、雄ネジ山）２１１が形成されている。本体部２１０は、後述するノック機構の一部を収容する収容部２１２を有する。本体部２１０の係合部材２１３は、斜めに張り出す部分２１３ａ及び平坦面２１３ｂを備える。仮留め治具２００において、本体部２１０に対する係合部材２１３の進退は、公知のノック機構により実施される。 As shown in FIG. 5, the temporary fixing jig 200 includes a main body portion 210, a head portion 240, and an adjusting portion 260.
The main body 210 is formed with threads (for example, male threads) 211 on the outer peripheral surface on the side opposite to the inclined portion 210a. The main body 210 has an accommodating portion 212 that accommodates a part of the knock mechanism described later. The engaging member 213 of the main body 210 includes an obliquely projecting portion 213a and a flat surface 213b. In the temporary fixing jig 200, the engaging member 213 is moved forward and backward with respect to the main body 210 by a known knock mechanism.

例えば、ノック機構は、本体部２１０の傾斜部２１０ａとは反対側の端部に対して出入り自在の押圧部材２７０と、当該押圧部材２７０を本体部２１０に対して外側に付勢する圧縮コイルばね２８０と、本体部２１０内部の底部に設けられて押圧部材２７０を係止する係止突起２９０とを備える。
押圧部材２７０は、本体部２１０から露出している押圧ボタン２７１と、当該押圧ボタン２７１に取り付けられた軸部２７２と、押圧ボタン２７１とは反対側で軸部に２７１に一体に形成されて係合部材２１３に接触している接触部２７３とを有する。
圧縮コイルばね２８０は、押圧部材２７０の軸部２７２の外周に被せ嵌められて本体部２１０の収容部２１２内に収容されている。圧縮コイルばね２８０は、本体部２１０の収容部２１２を臨む押圧ボタン２７１の面と収容部２１２の底面との間で支持されている。 For example, the knock mechanism includes a pressing member 270 that can freely move in and out of the end of the main body 210 opposite to the inclined portion 210a, and a compression coil spring that urges the pressing member 270 outward with respect to the main body 210. It includes a 280 and a locking projection 290 provided on the bottom inside the main body 210 to lock the pressing member 270.
The pressing member 270 is integrally formed with the pressing button 271 exposed from the main body 210, the shaft portion 272 attached to the pressing button 271, and the shaft portion 271 on the opposite side of the pressing button 271. It has a contact portion 273 that is in contact with the joint member 213.
The compression coil spring 280 is fitted over the outer circumference of the shaft portion 272 of the pressing member 270 and is housed in the accommodating portion 212 of the main body portion 210. The compression coil spring 280 is supported between the surface of the pressing button 271 facing the accommodating portion 212 of the main body portion 210 and the bottom surface of the accommodating portion 212.

図５（ａ）に示すように、押圧ボタン２７１が押圧されていない状態では、圧縮コイルばね２８０により押圧部材２７０は押し上げられており、係合部材２１３は本体部２１０の外周面に対して張り出している。
図５（ｂ）に示すように、押圧ボタン２７１が押圧された状態では、軸線ｘに沿った軸部２７２の運動に伴い接触部２７３が係合部材２１３を本体部２１０内に引き込むと共に、係止突起２９０と係合して押圧部材２７０をロックする。再度、押圧ボタン２７１を押圧することにより、接触部２７３と係止突起２９０との係合が解除されて、圧縮コイルばね２８０が押圧部材２７０を押し上げる。これにより、係合部材２１３が、再び本体部２１０の外側に張り出す。 As shown in FIG. 5A, when the pressing button 271 is not pressed, the pressing member 270 is pushed up by the compression coil spring 280, and the engaging member 213 projects from the outer peripheral surface of the main body 210. ing.
As shown in FIG. 5B, when the pressing button 271 is pressed, the contact portion 273 pulls the engaging member 213 into the main body portion 210 and engages with the movement of the shaft portion 272 along the axis x. Engage with the stop protrusion 290 to lock the pressing member 270. By pressing the pressing button 271 again, the engagement between the contact portion 273 and the locking projection 290 is released, and the compression coil spring 280 pushes up the pressing member 270. As a result, the engaging member 213 projects to the outside of the main body 210 again.

頭部２４０は、例えば中空の円筒部材として形成されており、本体部２１０の先端を臨む側に当接面２４０ａを有する。頭部２４０の中空部の内周面にはネジ山（例えば、雌ネジ山）２４１が形成されている。つまり、仮留め治具２００において、調節部２６０は、本体部２１０の雄ネジ山２１１及び頭部２４０の雌ネジ山２４１により構成されている。
仮留め治具２００は、下側ピースＰ２を上側ピースＰ１に仮留めする場合、少なくとも仮留め治具１００と同じ効果を奏すると共に、ノック機構の存在により、仮留めの解除を容易に行うことができる。
なお、図示の実施の形態において、係合部材２１３は、２つ設けられているが、係合部材２１３の数及び配置する間隔は、任意に設定することができる。 The head 240 is formed as, for example, a hollow cylindrical member, and has a contact surface 240a on the side facing the tip of the main body 210. A screw thread (for example, a female screw thread) 241 is formed on the inner peripheral surface of the hollow portion of the head 240. That is, in the temporary fixing jig 200, the adjusting portion 260 is composed of the male screw thread 211 of the main body portion 210 and the female screw thread 241 of the head 240.
When the lower piece P2 is temporarily fastened to the upper piece P1, the temporary fastening jig 200 has at least the same effect as the temporary fastening jig 100, and the presence of the knock mechanism makes it easy to release the temporary fastening. can.
In the illustrated embodiment, two engaging members 213 are provided, but the number of engaging members 213 and the intervals at which they are arranged can be arbitrarily set.

＜第３の実施の形態＞
次に、図６を用いて第３の実施の形態に係る仮留め治具３００について説明する。特に、第１の実施の形態に係る仮留め治具１００と異なる仮留め治具３００の構成について説明する。図６は、第３の実施の形態に係る仮留め治具を説明するための斜視図である。
図６に示すように、仮留め治具３００は、本体部３１０と、頭部３４０と、調節部とを備える。 <Third embodiment>
Next, the temporary fixing jig 300 according to the third embodiment will be described with reference to FIG. In particular, the configuration of the temporary fixing jig 300 different from the temporary fixing jig 100 according to the first embodiment will be described. FIG. 6 is a perspective view for explaining the temporary fixing jig according to the third embodiment.
As shown in FIG. 6, the temporary fixing jig 300 includes a main body portion 310, a head portion 340, and an adjusting portion.

本体部３１０は、傾斜部３１０ａとは反対側の端部の外周面にネジ山（例えば、雄ネジ山）３１１が形成されている。本体部３１０の係合部材３１３は、斜めに張り出す部分３１３ａ及び平坦面３１３ｂを備える。仮留め治具３００において本体部３１０に対する係合部材３１３の進退は、いわゆるサムターン機構により実施される。
例えば、サムターン機構は、頭部３４０に回転式の操作部３１４と、一端が当該操作部３１４に連結され、他端が本体部３１０内において係合部材３１３に連結された連結部（図示せず。）を有する。
例えば、操作部３１４を、矢印Ｒ方向に回転させた場合、操作部３１４の回転運動は、連結部を介して係合部材３１３に伝達され、係合部材３１３は、本体部３１０内に引き込まれる。つまり、連結部は、操作部の回転運動を係合部材３１３の進退運動に変換する。この状態から、操作部３１４を逆に回転させると、係合部材３１３は、本体部３１０から外側に張り出す。つまり、操作部３１４を操作しない限り、係合部材３１３の進退運動は実施されない。 The main body 310 has threads (for example, male threads) 311 formed on the outer peripheral surface of the end portion opposite to the inclined portion 310a. The engaging member 313 of the main body 310 includes an obliquely projecting portion 313a and a flat surface 313b. In the temporary fastening jig 300, the engaging member 313 advances and retreats with respect to the main body 310 by a so-called thumb turn mechanism.
For example, in the thumb turn mechanism, a rotary operation unit 314 is connected to the head 340, one end is connected to the operation unit 314, and the other end is connected to the engagement member 313 in the main body 310 (not shown). .).
For example, when the operation unit 314 is rotated in the direction of the arrow R, the rotational movement of the operation unit 314 is transmitted to the engaging member 313 via the connecting portion, and the engaging member 313 is pulled into the main body unit 310. .. That is, the connecting portion converts the rotational movement of the operating portion into the advancing / retreating movement of the engaging member 313. When the operation unit 314 is rotated in the reverse direction from this state, the engaging member 313 projects outward from the main body unit 310. That is, unless the operation unit 314 is operated, the advancing / retreating movement of the engaging member 313 is not performed.

頭部３４０は、例えば中空の円筒部材として形成されており、本体部３１０の先端を臨む側に当接面３４０ａを有する。頭部３４０の中空部の内周面にはネジ山（例えば、雌ネジ山（図示せず。））が形成されている。つまり、仮留め治具３００において、調節部は、本体部３１０の雄ネジ山３１１及び頭部３４０の雌ネジ山により構成されている。
仮留め治具３００は、下側ピースＰ２を上側ピースＰ１に仮留めする場合、少なくとも仮留め治具１００の同じ効果を奏すると共に、サムターン機構の存在により、仮留めの解除を容易に行うことができる。
なお、図示の実施の形態において、係合部材３１３は、２つ設けられているが、係合部材３１３の数及び配置する間隔は、任意に設定することができる。 The head 340 is formed as, for example, a hollow cylindrical member, and has a contact surface 340a on the side facing the tip of the main body 310. A screw thread (for example, a female screw thread (not shown)) is formed on the inner peripheral surface of the hollow portion of the head 340. That is, in the temporary fixing jig 300, the adjusting portion is composed of the male screw thread 311 of the main body portion 310 and the female screw thread of the head 340.
When the lower piece P2 is temporarily fixed to the upper piece P1, the temporary fixing jig 300 has at least the same effect as that of the temporary fixing jig 100, and the presence of the thumb turn mechanism makes it easy to release the temporary fixing. can.
In the illustrated embodiment, two engaging members 313 are provided, but the number of engaging members 313 and the intervals at which they are arranged can be arbitrarily set.

１本体部
１１収容部
１１ａ雌ネジ山（第２ネジ山）
１３係合部材
４頭部
４１当接部
４３軸部
４３ａ雄ネジ山（第１ネジ山）
６調節部
１００，２００，３００仮留め治具
２７０押圧部材
３１４操作部
ｄ間隔
Ｐ１上側ピース
Ｐ２下側ピース
Ｐ１２，Ｐ２２長手フランジ
Ｐ１２ａ，Ｐ２２ａ孔 1 Main body 11 Accommodating part 11a Female thread (second thread)
13 Engagement member 4 Head 41 Contact part 43 Shaft part 43a Male thread (first thread)
6 Adjusting part 100, 200, 300 Temporary fixing jig 270 Pressing member 314 Operation part d Interval P1 Upper piece P2 Lower piece P12, P22 Longitudinal flange P12a, P22a Hole

Claims

It is a temporary fixing jig that suspends the lower piece from the pieces that are liner plates that are assembled to each other in the vertical direction along the inner wall surface of the shaft and temporarily fastens them to the upper piece.
A main body that is inserted into a hole formed in the flange of the pieces that are in contact with each other,
A head that is connected to the main body and abuts on the flange of the upper piece,
An engaging member that can move forward and backward with respect to the outer peripheral surface of the main body and projects outward from the hole when advancing.
An adjusting unit that adjusts the distance between the head and the engaging member,
With
An opening is formed on the outer peripheral surface of the main body portion, and the engaging member is housed in the opening so as to be able to move forward and backward with respect to the opening .
The main body portion includes an urging mechanism that engages with the engaging member and urges the engaging member so as to project from the inside of the main body portion toward the outside.
The engaging member is urged from the inside to the outside of the main body portion so as to project outward from the peripheral edge of the hole and engage with the flange of the lower piece, and the lower portion. It is formed so that it can be released by pushing the engagement state of the side piece with the flange inside.
A temporary fastening jig characterized by adjusting the adjusting portion to narrow the distance between the head and the engaging member and sandwiching the flange between the head and the engaging member.

The adjusting portion has a shaft portion of the head having a first thread formed on the outer peripheral surface and a second screw thread accommodating the shaft portion and engaging the first screw thread on the inner peripheral surface. The temporary fixing jig according to claim 1, further comprising the accommodating portion of the main body portion.

The adjusting portion has a head portion formed in a cylindrical shape and having a first thread formed on an inner peripheral surface, and an outer peripheral surface having a second thread formed with which the first screw thread engages. The temporary fastening jig according to claim 1, further comprising a main body portion.

In the temporary fixing method of temporarily fixing the lower piece to the upper piece by using the temporary fixing jig according to any one of claims 1 to 3.
A step of bringing the lower piece closer to the upper piece to align the holes formed in the flanges with each other.
A step of inserting the temporary fixing jig into the holes aligned with each other and engaging the engaging member with the flange of the lower piece.
Temporary fastening method characterized by providing.

In a state where the engaging member is engaged with the flange of the lower piece, the upper piece and the lower piece are brought into contact with each other, and the adjusting portion is adjusted so that the head and the engaging member are engaged with each other. The temporary fastening method according to claim 4 , further comprising a step of narrowing the interval and sandwiching the flange between the head and the engaging member.