JP2008212964A - Apparatus for welding foundation pile - Google Patents

Apparatus for welding foundation pile Download PDF

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JP2008212964A
JP2008212964A JP2007052137A JP2007052137A JP2008212964A JP 2008212964 A JP2008212964 A JP 2008212964A JP 2007052137 A JP2007052137 A JP 2007052137A JP 2007052137 A JP2007052137 A JP 2007052137A JP 2008212964 A JP2008212964 A JP 2008212964A
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pile
welding
self
guide
propelled
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JP4040076B1 (en
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Koichi Naka
晃一 仲
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MIWA SANGYO KK
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  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for welding the upper end of a lower pile and the lower end of an upper pile by a welding torch mounted on a mobile frame, which apparatus can surely move the mobile frame at a constant speed. <P>SOLUTION: The welding apparatus 10 includes a travelling guide 20 to be mounted on the upper portion of the lower pile 1, and the mobile frame 40 which is supported by the travelling guide 20, and revolves around the lower pile 1 and the upper pile 2, and welds the upper end of the lower pile 1 and the lower end of the upper pile 2 by means of the mounted welding torch 70. The travelling guide 20 is divided into a block 100a and a block 100b, and forms one annular structure by combining both blocks. A chain 26 surrounds the annular travelling guide 20. The chain 26 is connected to the travelling guide 20 so as not to relatively move. The mobile frame 40 is provided with a sprocket 49 to be engaged with the chain 26 and a motor 47 for turning the sprocket. The mobile frame 40 is moved by the rotation of the sprocket 49 with respect to the travelling guide 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明はコンクリート杭や鋼管杭などの基礎杭の溶接装置に関する。   The present invention relates to a welding apparatus for foundation piles such as concrete piles and steel pipe piles.

建物の基礎杭は、工業生産される既製杭にあっては、トレーラーで輸送可能な7mから15mといった長さとするのが普通である。ところがこの程度の長さでは地下の支持層には届かないケースがある。そのような場合には基礎杭を継ぎ足して必要な長さの延伸基礎杭を形成する。   Building foundation piles are usually 7 to 15 meters long that can be transported by trailer for industrially produced piles. However, there are cases where this length does not reach the underground support layer. In such a case, the foundation pile is added to form an extended foundation pile having a required length.

コンクリート製の基礎杭の端の部分には鋼鉄製のリングが取り付けてあり、このリング同士を連結して継ぎ足しを行う。連結には溶接継手、無溶接継手、ボルト継手などが用いられる。溶接継手の場合、まず下側の基礎杭に玉掛けをして建て込み穴の中に吊り下げておき、その上にクレーンで支持した上側の基礎杭を重ねて溶接する。この溶接継手の溶接作業を自動化する提案は以前からなされており、その例を特許文献1、2に見ることができる。   A steel ring is attached to the end of the concrete foundation pile, and the rings are connected to each other for addition. For connection, a welded joint, a non-welded joint, a bolt joint, or the like is used. In the case of a welded joint, first, the lower foundation pile is slung and suspended in the built-in hole, and the upper foundation pile supported by the crane is stacked on top of it and welded. Proposals for automating the welding operation of this welded joint have been made for a long time, and examples thereof can be seen in Patent Documents 1 and 2.

特許文献1記載の溶接装置は、杭頭溶接部に近接してガイド用環体を設置し、このガイド用環体に自走溶接機を架設し、溶接棒を所定位置に支持しつつ繰り出して電気溶接を行う。特許文献2記載の溶接装置も基本的な仕組みは特許文献1記載のものと同じである。
特開平8−281483号公報 特開2005−334916号公報
In the welding apparatus described in Patent Document 1, a guide ring is installed in the vicinity of the pile head weld, a self-propelled welding machine is installed on the guide ring, and the welding rod is extended while being supported at a predetermined position. Perform electric welding. The basic mechanism of the welding apparatus described in Patent Document 2 is the same as that described in Patent Document 1.
JP-A-8-281383 Japanese Patent Laying-Open No. 2005-334916

溶接トーチを搭載した自走架台により基礎杭の溶接を行う場合、自走架台が走行ガイドに沿い一定速度で走行する必要があるが、上記特許文献1、2記載の装置は、一定速度の確保という面で次のような問題があった。   When foundation piles are welded by a self-propelled gantry equipped with a welding torch, the self-propelled gantry needs to travel at a constant speed along the traveling guide. However, the devices described in Patent Documents 1 and 2 ensure a constant speed. In this respect, there were the following problems.

特許文献1記載の装置では、ガイドレールに接触する駆動輪を回転させて自走溶接機を移動させる。ガイドレールに油が付着したりすると、駆動輪が空回りして自走溶接機が移動できない可能性がある。移動はできるにせよ、その速度が違ってくれば、所期の溶接結果が得られなくなる。   In the apparatus described in Patent Document 1, the self-propelled welding machine is moved by rotating the drive wheel that contacts the guide rail. If oil adheres to the guide rail, the drive wheel may idle and the self-propelled welding machine may not move. Even if the movement is possible, if the speed is different, the desired welding result cannot be obtained.

特許文献2記載の装置も、ガイドレールに接触する車輪で自走架台を移動させる。滑りを防止するOリングが設けられてはいるものの、油が付着した場合の推進力低下は如何ともしがたい。   The device described in Patent Document 2 also moves the self-propelled gantry with wheels that contact the guide rail. Although an O-ring for preventing slipping is provided, it is difficult to reduce the driving force when oil adheres.

本発明は上記の点に鑑みなされたものであり、下杭上端と上杭下端とを、それらの周りを周回する自走架台に搭載した溶接トーチで溶接する基礎杭溶接装置において、自走架台を一定速度で確実に移動させられるようにすることを目的とする。また、溶接トーチが溶接ラインを正確に辿って移動するようにすることを目的とする。   The present invention has been made in view of the above points, and in a foundation pile welding apparatus for welding a lower pile upper end and an upper pile lower end with a welding torch mounted on a self-propelled stand that circulates around them, a self-propelled stand The purpose of this is to ensure that it can be moved at a constant speed. It is another object of the present invention to move the welding torch accurately following the welding line.

(1)上記目的を達成するために本発明は、下杭上端と上杭下端とを、それらの周りを周回する自走架台に搭載した溶接トーチで溶接する基礎杭溶接装置において、前記下杭または上杭には前記自走架台を支持する走行ガイドが取り付けられるものであり、前記走行ガイドは複数のブロックに分割され、それらを組み合わせて1個の円環構造を形成するものであり、前記走行ガイドを取り巻き、且つ走行ガイドに移動不能に連結されたチェーンを設け、前記チェーンにかみ合うスプロケットと、それを回転させる電動機を前記自走架台に設け、前記スプロケットの回転で自走架台を移動させることを特徴としている。   (1) In order to achieve the above object, the present invention provides a foundation pile welding apparatus for welding a lower pile upper end and an upper pile lower end with a welding torch mounted on a self-propelled rack that circulates around the lower pile upper end. Alternatively, the upper pile is attached with a traveling guide that supports the self-propelled gantry, the traveling guide is divided into a plurality of blocks, and they are combined to form one annular structure, A chain that surrounds the travel guide and is immovably connected to the travel guide is provided, a sprocket that meshes with the chain, and an electric motor that rotates the sprocket are provided on the self-propelled base, and the self-propelled base is moved by the rotation of the sprocket. It is characterized by that.

この構成によると、走行ガイドに移動不能に連結されたチェーンにかみ合うスプロケットを回転させて自走架台を移動させるものであるから、スリップということがあり得ず、自走架台を着実に一定速度で移動させることができる。これにより、肉盛りにむらのない溶接部を得ることができる。   According to this configuration, the sprocket that meshes with a chain that is immovably connected to the traveling guide is rotated to move the self-propelled base, so there is no possibility of slipping, and the self-propelled base is steadily moved at a constant speed. Can be moved. Thereby, the welding part which does not have unevenness in build-up can be obtained.

(2)また本発明は、上記構成の基礎杭溶接装置において、前記チェーンは、端部同士を連結して1個の無端チェーンを形成するものであることを特徴としている。   (2) Moreover, this invention is the foundation pile welding apparatus of the said structure, The said chain connects the edge parts, It is characterized by forming one endless chain.

この構成によると、自走架台を360°以上移動させ、切れ目のない環状の溶接部を得ることができる。   According to this configuration, the self-propelled gantry can be moved 360 ° or more, and a continuous welded ring can be obtained.

(3)また本発明は、上記構成の基礎杭溶接装置において、前記自走架台は前記溶接トーチを角度可変に支持する支持部を備え、この支持部は前記下杭または上杭に接触するローラを備えることを特徴としている。   (3) Moreover, this invention is a foundation pile welding apparatus of the said structure, WHEREIN: The said self-propelled mount frame is provided with the support part which supports the said welding torch in a variable angle, This support part is a roller which contacts the said lower pile or an upper pile. It is characterized by having.

この構成によると、基礎杭と溶接トーチの距離が一定に保たれ、アークを安定して発生させることができる。   According to this configuration, the distance between the foundation pile and the welding torch is kept constant, and the arc can be generated stably.

(4)また本発明は、上記構成の基礎杭溶接装置において、前記下杭または上杭に、前記走行ガイドよりも下の位置で固定される落下防止リングを設け、この落下防止リングと走行ガイドとの間に走行ガイドの水平度調節手段を配置したことを特徴としている。   (4) Further, according to the present invention, in the foundation pile welding apparatus configured as described above, the lower pile or the upper pile is provided with a fall prevention ring fixed at a position below the running guide, and the fall prevention ring and the running guide are provided. It is characterized in that a leveling adjusting means for the traveling guide is arranged between the two.

この構成によると、走行ガイドの落下が防がれるとともに、走行ガイドの水平度を調節して、溶接トーチが溶接ラインを正確に辿るようにすることができる。   According to this configuration, the traveling guide can be prevented from falling and the level of the traveling guide can be adjusted so that the welding torch accurately follows the welding line.

本発明によると、走行ガイドに移動不能に連結されたチェーンにかみ合うスプロケットを回転させて自走架台を移動させるものであるから、自走架台に搭載された溶接トーチを着実に一定速度で移動させることができる。また走行ガイドの水平度を調節して、溶接トーチに溶接ラインを正確に辿らせることができる。   According to the present invention, the sprocket that meshes with the chain that is immovably connected to the traveling guide is rotated to move the self-propelled cradle. Therefore, the welding torch mounted on the self-propelled cradle is moved steadily at a constant speed. be able to. In addition, the level of the traveling guide can be adjusted so that the welding torch can accurately follow the welding line.

本発明の実施形態を図1−10に示す。図1は溶接装置の全体構造を示す側面図、図2は溶接装置の全体構造を示す上面図、図3は要部を断面した溶接装置の拡大側面図、図4は溶接装置の正面図、図5はチェーン端連結部の部分拡大上面図、図6はチェーン端連結部の部分拡大正面図、図7は下杭と上杭を整列させる状況を示す側面図、図8は下杭と上杭の整列と仮溶接に用いる整列ガイドの側面図、図9は整列ガイドの上面図、図10は整列ガイドの部分拡大断面図である。   An embodiment of the present invention is shown in FIGS. 1-10. 1 is a side view showing the entire structure of the welding apparatus, FIG. 2 is a top view showing the entire structure of the welding apparatus, FIG. 3 is an enlarged side view of the welding apparatus with a cross section of the main part, FIG. 4 is a front view of the welding apparatus, FIG. 5 is a partially enlarged top view of the chain end connecting portion, FIG. 6 is a partially enlarged front view of the chain end connecting portion, FIG. 7 is a side view showing a state in which the lower pile and the upper pile are aligned, and FIG. FIG. 9 is a side view of an alignment guide used for alignment and temporary welding of piles, FIG. 9 is a top view of the alignment guide, and FIG. 10 is a partially enlarged sectional view of the alignment guide.

図1、3、7、10に2本の杭がそれぞれ一部ずつ実線あるいは仮想線で示されている。2本とも同一種類のコンクリート既製杭であるが、本明細書では、下に位置するものを下杭、上に位置するものを上杭と呼称し、下杭には1、上杭には2の符号を付すこととする。下杭1は両端に鋼鉄製リング3を有し、上杭2は両端に鋼鉄製リング4を有する。下杭1の上端の鋼鉄製リング3と上杭2の下端の鋼鉄製リング4を合わせると所定の開先形状が形成される。このリング3、4を溶接するのに用いられるのが溶接装置10である。   In FIGS. 1, 3, 7, and 10, two stakes are respectively shown by solid lines or virtual lines. Both of these are the same type of concrete ready-made piles. In this specification, the lower pile is called the lower pile, the upper pile is called the upper pile, 1 for the lower pile, and 2 for the upper pile. The reference numeral is attached. The lower pile 1 has steel rings 3 at both ends, and the upper pile 2 has steel rings 4 at both ends. When the steel ring 3 at the upper end of the lower pile 1 and the steel ring 4 at the lower end of the upper pile 2 are combined, a predetermined groove shape is formed. A welding device 10 is used to weld the rings 3 and 4.

下杭1は地面の穴から所定高さ突き出した状態で玉掛けによって保持されている。穴は建て込み用の本穴であっても良いし、溶接作業専用の仮穴であっても良い。溶接装置10は、下杭1の上部に取り付けられる走行ガイド20と、走行ガイド20に支持される自走架台40と、自走架台40に搭載される溶接トーチ70を主な構成要素とする。以下、それらの詳細構造を順次説明する。   The lower pile 1 is held by a sling with a predetermined height protruding from a hole in the ground. The hole may be a main hole for erection or a temporary hole dedicated for welding work. The welding apparatus 10 includes a traveling guide 20 attached to the upper portion of the lower pile 1, a self-propelled gantry 40 supported by the traveling guide 20, and a welding torch 70 mounted on the self-propelled gantry 40 as main components. Hereinafter, those detailed structures will be sequentially described.

走行ガイド20は鋼鉄の板材同士を溶接して、あるいはボルト・ナット等の締結要素で連結して構成した円環状の構造物であり、下杭1の外周面にほぼ密着するハブ21と、ハブ21に複数のスポーク22を介して連結されたリム23を備える。ハブ21もリム23も主たる平面を垂直に立てる配置となっている。走行ガイド20は複数のブロックに分割され、それらを組み合わせて1個の円環構造を形成する。本実施形態では、軸心を含む垂直面で走行ガイド20を二分割し、ブロック数を2としている。ブロック同士の連結には図示しないボルト・ナットを用いる。   The traveling guide 20 is an annular structure formed by welding steel plate members or connecting them with fastening elements such as bolts and nuts, and a hub 21 that is in close contact with the outer peripheral surface of the lower pile 1 and a hub. 21 is provided with a rim 23 connected to 21 via a plurality of spokes 22. Both the hub 21 and the rim 23 are arranged so that their main planes stand vertically. The traveling guide 20 is divided into a plurality of blocks, which are combined to form a single ring structure. In the present embodiment, the traveling guide 20 is divided into two on the vertical plane including the axis, and the number of blocks is two. Bolts and nuts (not shown) are used for connecting the blocks.

走行ガイド20は下杭1の天面から所定距離下がった位置に固定する。固定には六角穴付き止めネジ24(図3参照)を用いる。六角穴付き止めネジ24は上下2本を一組として所定の角度間隔で配置され、それぞれ先端が下杭1の側面に面する形でハブ21にねじ込まれている。図示しない六角レンチで六角穴付き止めネジ24を回し、下杭1を圧迫することにより、走行ガイド20は固定される。六角穴付き止めネジ24を十分に締め込んだ後、緩み止めナット25で六角穴付き止めネジ24の緩み止めを行う。   The traveling guide 20 is fixed at a position that is lower than the top surface of the lower pile 1 by a predetermined distance. A hexagon socket set screw 24 (see FIG. 3) is used for fixing. The hexagon socket set screws 24 are arranged at a predetermined angular interval as a set of two upper and lower screws, and are screwed into the hub 21 such that their tips face the side surfaces of the lower pile 1. The travel guide 20 is fixed by rotating the hexagon socket set screw 24 with a hexagon wrench (not shown) and pressing the lower pile 1. After the hexagon socket set screw 24 is sufficiently tightened, the hexagon socket set screw 24 is prevented from being loosened by a loosening prevention nut 25.

六角穴付き止めネジ24だけでは走行リング20がずり落ちるおそれがあるので、走行ガイド20の下にさらに落下防止リング30を配置する。落下防止リング30は鋼鉄製の半円形バンド31を2個、ヒンジ32(図1参照)で連結した構造であり、ヒンジ32から180°隔たった位置の開放端を閉じて図示しないボルトで締め付ければ、落下防止リング30は下杭1に固定される。摩擦力で下杭1にしっかりと保持されるよう、落下防止リング30の内面にゴムなど摩擦係数の高い物質のライニングを施しておくとよい。   Since the traveling ring 20 may slide down only with the hexagon socket set screw 24, a fall prevention ring 30 is further disposed under the traveling guide 20. The fall prevention ring 30 has a structure in which two semicircular bands 31 made of steel are connected by a hinge 32 (see FIG. 1), and the open end at a position 180 ° apart from the hinge 32 is closed and tightened with a bolt (not shown). For example, the fall prevention ring 30 is fixed to the lower pile 1. The inner surface of the fall prevention ring 30 may be lined with a material having a high coefficient of friction such as rubber so that the lower pile 1 is firmly held by the frictional force.

落下防止リング30には走行ガイド20の水平度調節手段が設けられる。水平度調節手段を構成するのは落下防止リング30に所定の角度間隔で配置された複数のボルト33である。ボルト33は軸線を垂直にする形で落下防止リング30にねじ込まれており、各々先端を走行ガイド20の下面に当ててこれを支える。ボルト33を回して上下させればその位置における走行ガイド20の高さが変化する。高さ調整の必要な箇所のボルト33を回すことにより、走行ガイド20を下杭1の天面(あるいは上杭2の底面)と平行にすることができる。   The fall prevention ring 30 is provided with a leveling adjusting means for the travel guide 20. A plurality of bolts 33 arranged at predetermined angular intervals on the fall prevention ring 30 constitute the leveling adjusting means. The bolts 33 are screwed into the fall prevention ring 30 so that the axis is vertical, and each tip is applied to the lower surface of the traveling guide 20 to support it. If the bolt 33 is turned up and down, the height of the travel guide 20 at that position changes. The traveling guide 20 can be made parallel to the top surface of the lower pile 1 (or the bottom surface of the upper pile 2) by turning the bolt 33 at a position where height adjustment is necessary.

下杭1の周囲に走行ガイド20のブロックを配置し、組み合わせる作業を終えた後、リム23を取り巻く形でチェーン26を水平に取り付ける。チェーン26は両端を連結して無端形状とする。連結は、図5に示すU字形の連結金具27によって行う。チェーン26には、所々のリンク板に、上または下に向かって突き出すブラケット28が形成されており、このブラケット29の貫通穴29を通じ図示しないビスをリム23にねじ込むことにより、走行ガイド20に移動不能に連結される。   After the blocks of the traveling guide 20 are arranged around the lower pile 1 and the combination work is finished, the chain 26 is attached horizontally so as to surround the rim 23. The chain 26 has an endless shape by connecting both ends. The connection is performed by a U-shaped connection fitting 27 shown in FIG. In the chain 26, brackets 28 protruding upward or downward are formed on various link plates, and a screw (not shown) is screwed into the rim 23 through a through hole 29 of the bracket 29, so that the chain 26 moves to the travel guide 20. Linked impossible.

自走架台40も、鋼鉄の板材同士を溶接して、あるいはボルト・ナット等の締結要素で連結して、所定のフレーム構造を形成する。自走架台40は複数のローラでリム23を抱えるようにして走行ガイド20に走行自在に取り付けられる。そのローラとは、リム23を上下から挟むローラ41、42と、リム23の上端を表と裏から挟むローラ43、44と、同じくリム23の下端を表と裏から挟むローラ45、46である。これら3組のローラは、2セットが図4に示すように自走架台40の左右位置に対称的に設けられる。自走架台40の重量を支えるのはローラ41である。   The self-propelled gantry 40 also forms a predetermined frame structure by welding steel plates together or connecting them with fastening elements such as bolts and nuts. The self-propelled gantry 40 is attached to the travel guide 20 so that the rim 23 is held by a plurality of rollers. The rollers include rollers 41 and 42 that sandwich the rim 23 from above and below, rollers 43 and 44 that sandwich the upper end of the rim 23 from the front and back, and rollers 45 and 46 that sandwich the lower end of the rim 23 from the front and back. . Two sets of these three sets of rollers are provided symmetrically at the left and right positions of the self-propelled gantry 40 as shown in FIG. A roller 41 supports the weight of the self-propelled gantry 40.

自走架台40は縦軸の電動機47を支持する。電動機47は減速機を一体に組み合わせたものであり、減速機部分から上向きに突き出した出力軸48にはスプロケット49が固定されている。スプロケット49はチェーン26にかみ合うものであり、スプロケット49が回転するとそれはチェーン26を手繰り寄せようとするが、チェーン26が走行ガイド20に移動不能に連結されているので、自らがチェーン26に対して移動する。これが自走架台40の動きとなる。   The self-propelled gantry 40 supports a motor 47 with a vertical axis. The electric motor 47 is a combination of speed reducers, and a sprocket 49 is fixed to an output shaft 48 protruding upward from the speed reducer portion. The sprocket 49 meshes with the chain 26, and when the sprocket 49 rotates, it tries to pull the chain 26, but the chain 26 is immovably connected to the travel guide 20, so Moving. This is the movement of the self-propelled gantry 40.

自走架台40は、溶接トーチ70を角度可変に支持する支持部50をその上面に搭載している。以下、支持部50の構造を説明する。   The self-propelled gantry 40 has a support portion 50 that supports the welding torch 70 with a variable angle mounted on the upper surface thereof. Hereinafter, the structure of the support part 50 will be described.

支持部50の基礎をなすのは直線動案内部材51である。直線動案内部材51は自走架台40に固定されたベース51aと、その上に載置されたスライダ51bを備える。スライダ51bは走行ガイド20の半径方向にスライドする。圧縮コイルばね52がスライダ51bを走行ガイド20の中心方向へ押す。圧縮コイルばね52は、自走架台40の上面から立ち上がるブラケット53に水平にねじ込まれたスタッドボルト54に一端をからませており、スタッドボルト54上のナット55を回すことによりスライダ51bに及ぼす圧力を変えられるようになっている。   The linear motion guide member 51 forms the basis of the support portion 50. The linear motion guide member 51 includes a base 51a fixed to the self-propelled gantry 40 and a slider 51b placed thereon. The slider 51 b slides in the radial direction of the travel guide 20. The compression coil spring 52 pushes the slider 51 b toward the center of the traveling guide 20. One end of the compression coil spring 52 is entangled with a stud bolt 54 screwed horizontally to a bracket 53 rising from the upper surface of the self-propelled gantry 40, and the pressure exerted on the slider 51b is turned by turning a nut 55 on the stud bolt 54. It can be changed.

スライダ51bの上面からは支柱56が立ち上がる。支柱56はブラケット57、58を支持する。ブラケット57、58は各々支柱56を挟むすり割り部を有し、ブラケット57にあってはボルト59を、ブラケット58にあってはボルト60を、それぞれ締め付けることにより、支柱56に固定される。ボルト59、60を緩めればブラケット57、58の水平面内での角度あるいは支柱56に対する高さを変えることができる。   A column 56 rises from the upper surface of the slider 51b. The column 56 supports the brackets 57 and 58. Each of the brackets 57 and 58 has a slit portion that sandwiches the support column 56, and is fixed to the support column 56 by tightening the bolt 59 in the bracket 57 and the bolt 60 in the bracket 58. If the bolts 59 and 60 are loosened, the angle of the brackets 57 and 58 in the horizontal plane or the height with respect to the column 56 can be changed.

ブラケット57にはブラケット61が固定される。ブラケット61にもすり割り部が設けられ、ここに溶接トーチホルダ71が挿入される。ボルト62を締め付ければ溶接トーチホルダ71は固定される。   A bracket 61 is fixed to the bracket 57. The bracket 61 is also provided with a slit portion, into which the welding torch holder 71 is inserted. If the bolt 62 is tightened, the welding torch holder 71 is fixed.

ブラケット58からは上杭2に向けアーム63が突き出す。アーム63は2枚の鋼板を望遠鏡式に伸縮可能に継ぎ合わせたものであり、2枚の板を連結するボルト64を緩めれば、両者をずらして全体の長さを調節することができる。   An arm 63 protrudes from the bracket 58 toward the upper pile 2. The arm 63 is obtained by joining two steel plates in a telescopic manner so as to be telescopic. If the bolts 64 that connect the two plates are loosened, the length can be adjusted by shifting both of them.

アーム63の先端にはローラ65が取り付けられる。ローラ65は算盤玉形状をしており、アーム63に固定された垂直軸66に回転自在に支持されている。圧縮コイルばね52で押されてきたスライダ51bは、ローラ65が上杭2に当たることによりそれ以上移動しなくなる。これにより、溶接トーチホルダ71の上杭2に対する距離が一定化する。   A roller 65 is attached to the tip of the arm 63. The roller 65 has an abacus ball shape and is rotatably supported by a vertical shaft 66 fixed to the arm 63. The slider 51b pushed by the compression coil spring 52 does not move any more when the roller 65 hits the upper pile 2. Thereby, the distance with respect to the upper pile 2 of the welding torch holder 71 is fixed.

自走架台40には、溶接箇所から飛散するスパッタが作業者の方向や重要構成要素方向に飛んでくるのを防止するため、上下1対のカバー67、68が設けられる。カバー67、68はいずれもいずれも鋼板製で、カバー67はブラケット58に固定され、カバー68は自走架台40自体に固定されている。   The self-propelled gantry 40 is provided with a pair of upper and lower covers 67 and 68 in order to prevent spatter scattered from the welded portion from flying in the direction of the operator or the direction of the important components. Both the covers 67 and 68 are made of a steel plate, the cover 67 is fixed to the bracket 58, and the cover 68 is fixed to the self-propelled gantry 40 itself.

溶接トーチホルダ71が保持する溶接トーチ70は、市販の自動溶接機の一部分をなすものであり、図示しない自動溶接機本体が、溶接ワイヤ72の自動繰り出しと、溶接電流の供給を行う。   The welding torch 70 held by the welding torch holder 71 is a part of a commercially available automatic welding machine, and an automatic welding machine main body (not shown) automatically feeds the welding wire 72 and supplies a welding current.

溶接ワイヤ72の先端高さが溶接ライン(リング3、4の合わせ目)に一致するようにブラケット57の高さを調節し、また溶接ワイヤ72から溶接箇所までの距離が所定値になるようにアーム63の長さを調節した後、電動機47と自動溶接機をONにする。すると自走架台40は一方向にゆっくりと移動し、溶接トーチ70は溶接ラインに沿って溶接を行う。溶接ワイヤ72は所定速度で自動的に繰り出される。自動溶接機本体は手押し車あるいは自走車両等に搭載しておき、自走架台40からあまり離れないように追随させるのがよい。   The height of the bracket 57 is adjusted so that the tip height of the welding wire 72 coincides with the welding line (the joint of the rings 3 and 4), and the distance from the welding wire 72 to the welding location becomes a predetermined value. After adjusting the length of the arm 63, the electric motor 47 and the automatic welding machine are turned on. Then, the self-propelled gantry 40 moves slowly in one direction, and the welding torch 70 performs welding along the welding line. The welding wire 72 is automatically paid out at a predetermined speed. It is preferable that the automatic welding machine main body is mounted on a handcart or a self-propelled vehicle, and is followed so as not to be far away from the self-propelled gantry 40.

走行ガイド20に移動不能に連結されたチェーン26にかみ合うスプロケット49を回転させて自走架台40を移動させるものであるから、自走架台40はスリップと無縁の移動を行う。このため、自走架台40に搭載された溶接トーチ70を着実に一定速度で移動させることができる。また、走行ガイド20の水平度を予め調節しておくことにより、溶接トーチ70に溶接ラインを正確に辿らせることができる。これらが相まって、良好な溶接結果を得ることができる。   Since the sprocket 49 that meshes with the chain 26 that is immovably connected to the travel guide 20 is rotated to move the self-propelled gantry 40, the self-propelled gantry 40 moves without slip. For this reason, the welding torch 70 mounted on the self-propelled gantry 40 can be moved steadily at a constant speed. Further, by adjusting the level of the traveling guide 20 in advance, the welding torch 70 can be made to follow the welding line accurately. Combined with these, good welding results can be obtained.

下杭1と上杭2の周囲を自走架台40が一巡すれば溶接作業は終了する。自動溶接機をOFFにしてアークを消し、電動機47をOFFにして自走架台40の移動を止める。以後、チェーン26を走行ガイド20から取り外し、走行ガイド20を2個のブロックに分割して下杭1から分離する。落下防止リング30も下杭1から取り外す。そして新たな下杭1と上杭2に溶接装置10をセットし、次の溶接作業を開始する。   If the self-propelled gantry 40 makes a round around the lower pile 1 and the upper pile 2, the welding operation is completed. The automatic welding machine is turned off to turn off the arc, and the electric motor 47 is turned off to stop the movement of the self-propelled gantry 40. Thereafter, the chain 26 is removed from the traveling guide 20, and the traveling guide 20 is divided into two blocks and separated from the lower pile 1. The fall prevention ring 30 is also removed from the lower pile 1. And the welding apparatus 10 is set to the new lower pile 1 and the upper pile 2, and the next welding operation is started.

溶接装置10による本格的な溶接作業に入る前に、下杭1と上杭2を整列状態にして仮溶接しておく必要がある。その作業に用いる整列ガイドの一例を図7−10に基づき説明する。   Before starting full-scale welding work by the welding apparatus 10, it is necessary to temporarily weld the lower pile 1 and the upper pile 2 in an aligned state. An example of the alignment guide used for the work will be described with reference to FIGS.

整列ガイド100は、鋼板を筒形に加工したものであるが、単純な円筒形ではなく、下から上へと順次直径が大きくなるよう、4段の筒部を積み上げた形になっている。最下段の筒部101は円筒形であり、下杭1の外径より少し大きい内径を有する。その上の筒部102は上向きに広がるテーパ形状をなし、最小直径部の直径は筒部101の直径に等しい。その上の筒部103は筒部102の最大直径部と同じ直径の円筒形である。最上段の筒部104は上向きに広がるテーパ形状をなし、最小直径部の直径は筒部103の直径に等しい。なお筒部103の下部には横長の窓105が所定間隔で複数形成されている。窓105は下杭1と上杭2の整列状況の目視確認及びリング3、4の仮溶接作業に用いられる。   The alignment guide 100 is obtained by processing a steel plate into a cylindrical shape. However, the alignment guide 100 is not a simple cylindrical shape, but has a shape in which four stages of cylindrical portions are stacked so that the diameter gradually increases from bottom to top. The lowermost tube portion 101 is cylindrical and has an inner diameter that is slightly larger than the outer diameter of the lower pile 1. The upper cylindrical portion 102 has a tapered shape extending upward, and the diameter of the smallest diameter portion is equal to the diameter of the cylindrical portion 101. The upper cylinder portion 103 has a cylindrical shape having the same diameter as the maximum diameter portion of the cylinder portion 102. The uppermost cylindrical portion 104 has a tapered shape spreading upward, and the diameter of the smallest diameter portion is equal to the diameter of the cylindrical portion 103. A plurality of horizontally long windows 105 are formed at a predetermined interval below the cylindrical portion 103. The window 105 is used for visual confirmation of the alignment state of the lower pile 1 and the upper pile 2 and for temporary welding work of the rings 3 and 4.

整列ガイド100は軸心を含む垂直面で二分割され、第1ブロック100aと第2ブロック100bに分かれる。第1ブロック100aと第2ブロック100bは複数のアイボルト106で連結される。第1ブロック100aと第2ブロック100bには、それぞれ筒部103の箇所に2個ずつのハンドル107が固定される。計4個のハンドル107は、図9に示すように90°間隔で並ぶ。   The alignment guide 100 is divided into two by a vertical plane including the axis, and is divided into a first block 100a and a second block 100b. The first block 100 a and the second block 100 b are connected by a plurality of eyebolts 106. Two handles 107 are fixed to the first block 100a and the second block 100b, respectively, at the location of the cylindrical portion 103. A total of four handles 107 are arranged at intervals of 90 ° as shown in FIG.

筒部101には下杭1を圧迫する六角穴付き止めネジ108が120°間隔で3個ねじ込まれる。個数が3個なので、第1ブロック100aに2本、第2ブロック100bに1本という配分になる。走行ガイド20の六角穴付き止めネジ24と同様、六角穴付き止めネジ108を回して下杭1を圧迫し、整列ガイド100を固定するが、それだけでは整列ガイド100がずり落ちるおそれがある。そこで、走行ガイド20に対し使用するのと同じ落下防止リング30をこの場合も用いる。ボルト33は整列ガイド100の下面を支えるものであり、ボルト33を回すことにより整列ガイド100の高さ及び水平度を調節できる。下杭1の天面が窓105の上下方向中央に来るように整列ガイド100の高さを調節する。   Three hexagon socket set screws 108 that press the lower pile 1 are screwed into the cylinder portion 101 at intervals of 120 °. Since the number is three, the distribution is two for the first block 100a and one for the second block 100b. As with the hexagon socket set screw 24 of the travel guide 20, the hexagon socket set screw 108 is turned to press the lower pile 1 and fix the alignment guide 100. However, the alignment guide 100 may slip down by itself. Therefore, the same fall prevention ring 30 used for the traveling guide 20 is also used in this case. The bolt 33 supports the lower surface of the alignment guide 100, and the height and level of the alignment guide 100 can be adjusted by turning the bolt 33. The height of the alignment guide 100 is adjusted so that the top surface of the lower pile 1 comes to the center of the window 105 in the vertical direction.

筒部103には、上杭2を下杭1に対し整列させる六角穴付き止めネジ109が120°間隔で3個ねじ込まれる。個数が3個なので、六角穴付き止めネジ108と同様、第1ブロック100aに2本、第2ブロック100bに1本という配分にする。六角穴付き止めネジ109は先端に回転自在な当てコマ110(図10参照)を有し、当てコマ110を介して上杭2を圧迫する。当てコマ110は上杭2に対し回転しないので、上杭2の表面に六角穴付き止めネジ109の回転痕が残らない。   Three hexagon socket set screws 109 for aligning the upper pile 2 with the lower pile 1 are screwed into the cylindrical portion 103 at intervals of 120 °. Since the number is three, as in the case of the hexagon socket set screw 108, the distribution is made such that there are two in the first block 100a and one in the second block 100b. The hexagon socket set screw 109 has a rotatable contact piece 110 (see FIG. 10) at the tip, and presses the upper pile 2 through the contact piece 110. Since the contact piece 110 does not rotate with respect to the upper pile 2, no rotation trace of the hexagon socket set screw 109 remains on the surface of the upper pile 2.

上杭2を迎えるとき、六角穴付き止めネジ109は図10に示す後退位置に置かれるのであるが、それでも、上杭2が当たって当てコマ110がもげるおそれなしとしない。そこで、当てコマ110を上から覆うテーパ状の庇部材111を筒部103の内面に溶接する。庇部材111は上杭2の挿入ガイドともなる。   When the upper pile 2 is greeted, the hexagon socket set screw 109 is placed in the retracted position shown in FIG. 10. However, there is still no fear that the upper pile 2 will hit and the contact piece 110 will come off. Therefore, a tapered flange member 111 that covers the contact piece 110 from above is welded to the inner surface of the cylindrical portion 103. The eaves member 111 also serves as an insertion guide for the upper pile 2.

図7のように下杭1の上部に整列ガイド100を固定した後、図示しないクレーンで吊り下げた上杭2を上方から整列ガイド100に挿入する。テーパ状の筒部104により整列ガイド100の上端が大きく広がっているので、挿入は容易である。なお上杭2を吊り下げる仕組みとして、天秤120を用いた玉掛けを採用すれば、上杭2を垂直に吊ることができ、整列ガイド100への挿入に苦労しない。   After fixing the alignment guide 100 to the upper part of the lower pile 1 as shown in FIG. 7, the upper pile 2 suspended by a crane (not shown) is inserted into the alignment guide 100 from above. Since the upper end of the alignment guide 100 is greatly expanded by the tapered cylindrical portion 104, the insertion is easy. In addition, if the sling using the balance 120 is employ | adopted as a mechanism which suspends the upper pile 2, the upper pile 2 can be suspended vertically and it does not have difficulty in insertion to the alignment guide 100. FIG.

上杭2の底面を下杭1の天面に載置した後、吊り下げ状態を保ったままで六角穴付き止めネジ109を回し、上杭2を下杭1に整列させる。整列完了後、窓105から溶接トーチを差し入れ、溶接ラインの数カ所に仮溶接を行う。それが済んだら整列ガイド100を分解して取り外す。この場所で引き続き本溶接を行う場合は、落下防止リング30を走行ガイド20に適合する高さに合わせて固定し、溶接装置10をセットする。   After placing the bottom surface of the upper pile 2 on the top surface of the lower pile 1, the hexagon socket set screw 109 is turned while keeping the suspended state to align the upper pile 2 with the lower pile 1. After the alignment is completed, a welding torch is inserted from the window 105, and temporary welding is performed at several places on the welding line. After that, the alignment guide 100 is disassembled and removed. When continuing the main welding at this place, the fall prevention ring 30 is fixed to a height suitable for the traveling guide 20 and the welding apparatus 10 is set.

上記実施形態では走行ガイド20は下杭1に取り付けられるが、上杭2に走行ガイド20を取り付ける構成も可能である。その場合は自走架台40から垂下する支柱に溶接トーチ70が支持されることになる。   In the said embodiment, although the traveling guide 20 is attached to the lower pile 1, the structure which attaches the traveling guide 20 to the upper pile 2 is also possible. In that case, the welding torch 70 is supported by a column that hangs down from the self-propelled gantry 40.

以上本発明の実施形態につき説明したが、発明の主旨を逸脱しない範囲でさらに種々の変更を加えて実施することができる。   Although the embodiments of the present invention have been described above, various modifications can be made without departing from the spirit of the invention.

本発明はコンクリート杭や鋼管杭などの基礎杭を継ぎ足す溶接装置に広く利用可能である。   The present invention can be widely used in welding apparatuses that add foundation piles such as concrete piles and steel pipe piles.

溶接装置の全体構造を示す側面図Side view showing overall structure of welding equipment 溶接装置の全体構造を示す上面図Top view showing the overall structure of the welding equipment 要部を断面した溶接装置の拡大側面図Enlarged side view of the welding equipment with a cross section of the main part 溶接装置の正面図Front view of welding equipment チェーン端連結部の部分拡大上面図Partial enlarged top view of chain end connection チェーン端連結部の部分拡大正面図Partial enlarged front view of chain end connection 下杭と上杭を整列させる状況を示す側面図Side view showing the situation where the lower and upper piles are aligned 下杭と上杭の整列と仮溶接に用いる整列ガイドの側面図Side view of alignment guide used for alignment and temporary welding of lower pile and upper pile 整列ガイドの上面図Top view of alignment guide 整列ガイドの部分拡大断面図Partial enlarged sectional view of the alignment guide

符号の説明Explanation of symbols

1 下杭
2 上杭
10 溶接装置
20 走行ガイド
26 チェーン
30 落下防止リング
33 ボルト(水平度調節手段)
40 自走架台
47 電動機
49 スプロケット
50 支持部
70 溶接トーチ
DESCRIPTION OF SYMBOLS 1 Lower pile 2 Upper pile 10 Welding device 20 Traveling guide 26 Chain 30 Fall prevention ring 33 Bolt (levelness adjustment means)
40 Self-propelled stand 47 Electric motor 49 Sprocket 50 Supporting part 70 Welding torch

Claims (4)

下杭上端と上杭下端とを、それらの周りを周回する自走架台に搭載した溶接トーチで溶接する基礎杭溶接装置において、
前記下杭または上杭には前記自走架台を支持する走行ガイドが取り付けられるものであり、
前記走行ガイドは複数のブロックに分割され、それらを組み合わせて1個の円環構造を形成するものであり、
前記走行ガイドを取り巻き、且つ走行ガイドに移動不能に連結されたチェーンを設け、
前記チェーンにかみ合うスプロケットと、それを回転させる電動機を前記自走架台に設け、
前記スプロケットの回転で自走架台を移動させることを特徴とする基礎杭溶接装置。
In the foundation pile welding device that welds the lower pile upper end and the upper pile lower end with a welding torch mounted on a self-propelled stand that circulates around them,
A traveling guide that supports the self-propelled gantry is attached to the lower pile or the upper pile,
The traveling guide is divided into a plurality of blocks, and they are combined to form one annular structure,
A chain that surrounds the travel guide and is immovably coupled to the travel guide;
A sprocket that meshes with the chain and an electric motor that rotates the sprocket are provided on the self-propelled stand,
A foundation pile welding apparatus for moving a self-propelled stand by rotation of the sprocket.
前記チェーンは、端部同士を連結して1個の無端チェーンを形成するものであることを特徴とする請求項1に記載の基礎杭溶接装置。 The foundation pile welding device according to claim 1, wherein the chain is formed by connecting ends to form an endless chain. 前記自走架台は前記溶接トーチを角度可変に支持する支持部を備え、この支持部は前記下杭または上杭に接触するローラを備えることを特徴とする請求項1または2に記載の基礎杭溶接装置。 3. The foundation pile according to claim 1, wherein the self-propelled gantry includes a support portion that supports the welding torch with a variable angle, and the support portion includes a roller that contacts the lower pile or the upper pile. Welding equipment. 前記下杭または上杭に、前記走行ガイドよりも下の位置で固定される落下防止リングを設け、この落下防止リングと走行ガイドとの間に走行ガイドの水平度調節手段を配置したことを特徴とする請求項1から3のいずれか1項に記載の基礎杭溶接装置。 The lower pile or the upper pile is provided with a fall prevention ring that is fixed at a position below the travel guide, and a leveling adjusting means for the travel guide is disposed between the fall prevention ring and the travel guide. The foundation pile welding apparatus according to any one of claims 1 to 3.
JP2007052137A 2007-03-02 2007-03-02 Foundation pile welding equipment Expired - Fee Related JP4040076B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101175541B1 (en) 2012-07-24 2012-08-22 주식회사 청우이엔지 Railless automatic steel pipe welding device

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN102689128B (en) * 2012-06-26 2014-04-30 宝钢钢构有限公司 Jig for assembly and manufacture of spiral pipe pile
CN117773443B (en) * 2024-02-27 2024-04-23 山东泽飞重工科技有限公司 Automatic welding device for building steel structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101175541B1 (en) 2012-07-24 2012-08-22 주식회사 청우이엔지 Railless automatic steel pipe welding device
WO2014017740A1 (en) * 2012-07-24 2014-01-30 주식회사 청우이엔지 Rail-less automatic steel pipe welding apparatus

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