JP2007051416A

JP2007051416A - Scaffold device

Info

Publication number: JP2007051416A
Application number: JP2005235038A
Authority: JP
Inventors: Kazuo Akiyama; 和夫秋山
Original assignee: GIJUTSU KAIHATSU KENKYUSHO KK
Current assignee: GIJUTSU KAIHATSU KENKYUSHO KK
Priority date: 2005-08-12
Filing date: 2005-08-12
Publication date: 2007-03-01

Abstract

PROBLEM TO BE SOLVED: To provide a scaffold device capable of being continuously moved without using any exclusive rail. SOLUTION: The scaffold device is equipped with a scaffold body 2 for working and a movement supporting device 3 mounted to the scaffold body 2 and moving by suspending and supporting the scaffold body 2 from a collar 103 of a bridge 101. Since the movement supporting device 3 is equipped with a plurality of follower wheels 6 and 6 moving on the collar 103, a driving wheel 7 attracted under the collar 103 by a magnetic force, a rotation driving mechanism moving the scaffold body 2 in a state of holding the collar 103 between the follower wheels 6 and the driving wheel 7 and a switching means 26 switching the follower wheels 6 to moving positions and non-moving positions on the collar 103, the collar 103 of the bridge 101 is held between the follower wheels 6 and the driving wheel 7 to suspend the scaffold body 2 to move. The movement is stopped at positions of a splice plate and a bolt or positions connecting a cross beam to a bridge girder, the follower wheels 6 are switched to the non-moving positions, and the follower wheels 6 are switched to the moving positions to be enable to move after the positions are made to pass through. COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、橋梁に用いる足場装置に関する。 The present invention relates to a scaffold device used for a bridge.

従来、この種の足場装置として、人が乗って作業することのできる足場本体に、足場本体の長手方向に摺動可能に取り付けられる摺動手段と、橋梁の橋桁、横桁等のフランジを上下から挟み全体を橋桁、桁等に吊り下げる吊下げ把持手段と、この吊下げ把持手段に対して前記足場本体を旋回させる旋回手段と、前記吊下げ把持手段を足場本体に対して昇降させる昇降手段とから成る取付旋回装置を取り付けた旋回移動式橋梁点検足場（例えば特許文献１）があり、また、人が乗って作業することのできる足場本体とこの足場本体を橋梁の横桁又はこれに平行な専用レールに走行可能と、それら橋梁又は専用レールを走行する車輪を備えた橋梁用点検足場（例えば特許文献２）がある。 Conventionally, as this kind of scaffolding device, a sliding means that can be slidably mounted in the longitudinal direction of the scaffolding body and a flange such as a bridge girder and a horizontal girder are installed vertically Suspension gripping means for suspending the entire sandwich from a bridge girder, a girder, etc., swiveling means for pivoting the scaffold main body with respect to the suspension gripping means, and lifting means for raising and lowering the suspension gripping means with respect to the scaffold main body There is a swing movement type bridge inspection scaffold (for example, Patent Document 1) to which a mounting swivel device is attached, and a scaffold main body on which a person can ride and work, and the scaffold main body is parallel to or parallel to a bridge beam. There is a bridge inspection scaffold (for example, Patent Document 2) that can travel on such dedicated rails and includes wheels that travel on the bridges or the dedicated rails.

また、上記のような足場装置を橋脚下部に吊り込む方法として、俯仰アームと垂直サドル，垂直ビームからなるブームを備えた専用車両により、点検足場を橋下に潜り込ませる方法（例えば特許文献３）や、作業足場の他端部と反対側に該作業足場の重量に平衡する専用のバランスウェイトを設け、橋上から橋下に吊り込む方法（例えば特許文献４）がある。
特開昭５９−１４５８０７号公報特開昭５９−１３０９０４号公報特開昭６２−１８５９０７号公報特開昭６２−２８８２５８号公報 In addition, as a method of suspending the scaffold device as described above at the lower part of the pier, a method of causing the inspection scaffold to sink under the bridge by a dedicated vehicle having a boom composed of a lifting arm, a vertical saddle, and a vertical beam (for example, Patent Document 3) There is a method of providing a dedicated balance weight that balances the weight of the work scaffold on the side opposite to the other end of the work scaffold and suspending it from above the bridge under the bridge (for example, Patent Document 4).
JP 59-145807 A JP 59-130904 A JP 62-185907 A JP-A-62-288258

上記特許文献１の装置では、作業場所を変える際には、一方の取付旋回装置を橋桁から外し、橋桁にまだ取り付けられている取付旋回装置の旋回手段のハンドルを回して、足場本体を旋回させて移動するものであるから、移動作業に手間が掛かり、また、橋の長さ方向に足場本体を連続的に移動することができない。 In the apparatus of Patent Document 1, when changing the work place, one of the mounting swiveling devices is removed from the bridge girder and the handle of the swiveling means of the mounting swiveling device still attached to the bridge girder is turned to swivel the scaffold body. Therefore, the moving work is troublesome and the scaffold body cannot be moved continuously in the length direction of the bridge.

一方、特許文献２の装置では、専用レールを用いた場合は、橋の長さ方向に連続的に足場本体を移動することができる。しかし、専用レールを設けずに、橋桁のフランジなどをレールに用いた場合、鋼材からなる橋桁の接合には、両側のフランジやウエブを挟むように添接板を設けると共に、それら添接板にボルトを挿通して接合されるため、接合箇所などにおいてフランジの外面に添接板とボルトがあり、フランジ上面は連続した平面とはならず、添接板を設けた接合部で走行不能となるため、専用レールが必要となり、この専用レールは橋の全長に幅方向両側に設けなければならず、設備費用が高騰する問題がある。 On the other hand, in the apparatus of Patent Document 2, when a dedicated rail is used, the scaffold body can be moved continuously in the length direction of the bridge. However, when a bridge girder flange or the like is used for the rail without providing a dedicated rail, for joining the bridge girder made of steel, attachment plates are provided so as to sandwich the flanges and webs on both sides, and the attachment plates Since the bolts are inserted and joined, there are attachment plates and bolts on the outer surface of the flange at the joints, etc., and the upper surface of the flange is not a continuous flat surface, and it is impossible to run at the joint where the attachment plate is provided. Therefore, a dedicated rail is required, and this dedicated rail has to be provided on both sides in the width direction along the entire length of the bridge, resulting in a problem that the equipment cost increases.

また、上述した足場装置を橋脚下部に吊り込む方法で、特許文献３では専用車両を必要とするため、汎用的なクレーンなどを使用することができず、また、特許文献４では釣合いのために別個に専用のバランスウェイトを必要とし、このバランスウェイトは吊り下ろしの際用いるものであるから、足場作業において不要であり、その重量により足場強度を余分に高める必要がある。 In addition, in the method of suspending the above-described scaffold device in the lower part of the pier, since a dedicated vehicle is required in Patent Document 3, a general-purpose crane or the like cannot be used, and in Patent Document 4, for balance. A dedicated balance weight is separately required, and this balance weight is used for hanging, so it is not necessary for the scaffold work, and the weight of the scaffold must be increased by its weight.

そこで、本発明は、専用レールを用いずに連続的に移動することができる足場装置を提供することを目的とし、加えて、吊り下ろし作業を簡易に行うことができる足場装置を提供することを目的とする。 Then, this invention aims at providing the scaffold apparatus which can move continuously, without using an exclusive rail, and also provides the scaffold apparatus which can perform suspension work simply. Objective.

請求項１の発明は、作業用の足場本体と、この足場本体に設けられ該足場本体を橋梁の鍔部に吊下支持して移動する移動支持装置とを備えた足場装置であって、前記移動支持装置は、前記鍔部上を移動する複数の上回転移動手段と、前記鍔部下に押し付けられる又は吸着する下回転移動手段と、前記上回転移動手段を前記鍔部上の移動位置と非移動位置とに切替える切替え手段とを備え、それら上，下回転移動手段により前記鍔部を挟んだ状態で前記下回転移動手段の回転力により前記足場本体を移動するものである。 The invention of claim 1 is a scaffold device comprising a working scaffold main body, and a moving support device that is provided on the scaffold main body and moves while supporting the scaffold main body on a buttock of a bridge. The movement support device includes a plurality of upper rotational movement means that move on the collar part, a lower rotational movement means that is pressed or adsorbed to the lower part of the collar part, and the upper rotational movement means that is not moved from the movement position on the collar part. Switching means for switching to a moving position is provided, and the scaffold main body is moved by the rotational force of the lower rotational moving means with the collar being sandwiched between the upper and lower rotational moving means.

また、請求項２の発明は、前記足場本体は、固定足場本体と、この固定足場本体の長さ方向にスライド可能な可動足場本体と、この可動足場本体を前記固定足場本体に対してスライド駆動する駆動手段とを備えるものである。 According to a second aspect of the present invention, the scaffold main body is a fixed scaffold main body, a movable scaffold main body that is slidable in the length direction of the fixed scaffold main body, and the movable scaffold main body is slidably driven with respect to the fixed scaffold main body. Drive means.

請求項１の構成によれば、橋梁の鍔部を上，下回転移動手段により挟んで足場本体を吊り下げ、下回転移動手段の回転力により移動する。そして、橋桁接合部の添接板やボルト、あるいは橋桁に横桁が連結された箇所などでは、移動を停止し、上回動移動手段を非移動位置に切り替えて、前記箇所を通過した後、上回動移動手段を移動位置に切り替えて移動することができる。また、下回転移動手段は鍔部に押し付けられ又は吸着するから、該下回転移動手段の回転力により確実に足場本体を移動することができる。 According to the configuration of the first aspect, the scaffold main body is suspended with the brim portion of the bridge sandwiched between the upper and lower rotational movement means, and moved by the rotational force of the lower rotational movement means. And, in the place where the cross plate is connected to the attachment plate and bolt of the bridge girder joint, or the cross beam, after the movement is stopped, the upper rotation moving means is switched to the non-moving position, The upper rotational movement means can be switched to the movement position and moved. Further, since the lower rotation moving means is pressed against or adsorbed to the buttocks, the scaffold main body can be reliably moved by the rotational force of the lower rotation moving means.

そして、橋梁の鍔部では、その上側は添接板以外に横桁の連結箇所やウエブの添接板などがあるのに対して、下側は添接板はあるが、上側に比べて、走行の妨げとなる箇所が少なく、その鍔部の下に押し付け又は吸着する下回転移動手段を回転して移動するから、足場本体をスムーズに移動させることができる。また、上回転移動手段に、回転駆動手段などを組み込む必要がないから、上回転移動手段を軽量化することができ、これにより上回転移動手段の位置を変える切替え手段も簡易なもので済む。 And in the brim part of the bridge, the upper side has a connecting part of the cross beam and the web's attachment plate in addition to the attachment plate, while the lower side has the attachment plate, but compared to the upper side, Since there are few places which obstruct | occlude driving | running | working and it rotates and moves the lower rotation moving means pressed or adsorb | sucking under the collar part, a scaffold main body can be moved smoothly. In addition, since it is not necessary to incorporate a rotation driving means or the like in the upper rotation moving means, the upper rotation moving means can be reduced in weight, and a switching means for changing the position of the upper rotation moving means can be simplified.

したがって、橋梁に専用レールなどを設ける必要がなく、接合箇所や横桁連結箇所などがある橋桁の鍔部を用いて足場本体を移動することができる。 Therefore, it is not necessary to provide a dedicated rail or the like on the bridge, and the scaffold main body can be moved using the brim of the bridge girder where there is a joint location or a cross girder connection location.

また、請求項２の構成によれば、可動足場本体を外側にスライドさせて足場本体を伸ばした状態で、該足場本体の中央側の重心位置を吊上げる。そして、上回転移動手段を鍔部の上に合わせるとともに、鍔部の下に下回転移動手段を合わせ足場本体を橋梁に吊り下げる。このように張出した可動足場本体がバランスウェイトの作用をするため、構造的に無駄のない足場装置を得ることができる。 According to the second aspect of the present invention, the center of gravity on the center side of the scaffold body is lifted while the scaffold body is extended by sliding the movable scaffold body outward. Then, the upper rotational movement means is aligned on the heel part, and the lower rotational movement means is aligned under the heel part, and the scaffold body is suspended from the bridge. Since the movable scaffold body projecting in this way acts as a balance weight, it is possible to obtain a scaffold device that is structurally useless.

尚、足場本体の長さ方向に対して、上，下回転移動手段を移動可能に設けた場合には、吊上げた足場本体の高さを、鍔部が上，下回転移動手段の間にくるように吊上げ、この状態で、上，下回転移動手段を足場本体の長さ方向に移動し、間に鍔部を挟むようにして足場本体を橋梁に吊り下げる。 If the upper and lower rotational movement means are movably provided in the length direction of the scaffold body, the height of the suspended scaffold body is between the upper and lower rotational movement means. In this state, the upper and lower rotational movement means are moved in the length direction of the scaffold main body, and the scaffold main body is suspended from the bridge with the buttocks sandwiched therebetween.

本発明における好適な実施の形態について、添付図面を参照しながら詳細に説明する。なお、以下に説明する実施の形態は、特許請求の範囲に記載された本発明の内容を限定するものではない。また、以下に説明される構成の全てが、本発明の必須要件であるとは限らない。各実施例では、従来とは異なる足場装置を採用することにより、従来にない足場装置が得られ、その足場装置を夫々記述する。 Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, an unprecedented scaffold device is obtained by adopting a scaffold device different from the conventional one, and each of the scaffold devices will be described.

以下、本発明の足場装置の実施例１について図１〜図１１を参照して説明する。同図に示すように、足場装置１は、作業用の足場本体２と、この足場本体２を橋梁101の橋桁102の鍔部103に吊上支持して移動する移動支持装置３とを備える。この移動支持装置３は、足場本体２上で左右に設けられる本体フレーム４，４と、この本体フレーム４を足場本体２の左右方向に移動可能に設けるフレーム駆動機構５，５と、前記本体フレーム４の前後に設けられる左右の上回転移動手段たる従動輪６，６と、これら前後の上回転手段６，６の間で本体フレーム４の中央に設けられる上回転移動手段たる従動輪６，６と、前記本体フレーム４に設けられ下回移動手段たる左右の駆動輪７，７とを備える。尚、前記橋桁102は鋼材などの磁性材からなる。 Hereinafter, Example 1 of the scaffold device of the present invention will be described with reference to FIGS. As shown in FIG. 1, the scaffold device 1 includes a working scaffold main body 2 and a moving support device 3 that moves the scaffold main body 2 while lifting and supporting the scaffold main body 2 on the flange 103 of the bridge girder 102 of the bridge 101. The movement support device 3 includes body frames 4 and 4 provided on the left and right sides of the scaffold body 2, frame drive mechanisms 5 and 5 provided to move the body frame 4 in the left and right direction of the scaffold body 2, and the body frame. 4, driven wheels 6, 6 as left and right upper rotational moving means provided on the front and rear of 4, and driven wheels 6, 6 as upper rotational moving means provided at the center of the main body frame 4 between these front and rear upper rotating means 6, 6. And left and right drive wheels 7, 7 provided on the main body frame 4 and serving as downward movement means. The bridge girder 102 is made of a magnetic material such as steel.

前記足場本体２は、下枠部11と四方の手摺枠部12とを備える。この手摺枠部12の上桟13に前記移動支持装置３の本体たる本体フレーム４が前記フレーム駆動手段５，５により連結され、このフレーム駆動手段５は、図３に示すように、角パイプなどからなる前記本体フレーム４に上取付部材14を設け、この上取付部材14と下取付部材15とをボルトなどのピン16により連結し、前記下取付部材15に複数のローラ17，17を設け、これらローラ17，17を前記上桟13内に転動可能に挿入し、その上桟13の開口一側縁に、前記ローラ17の離脱防止を兼用するラック19が固定され、このラック19に噛合するギヤ（図示せず）を回転駆動する駆動手段たるモータ18が、前記下取付部材15に設けられている。尚、前記上桟13はコ字型の鋼材からなる。 The scaffold body 2 includes a lower frame portion 11 and four handrail frame portions 12. A main body frame 4 which is a main body of the movement support device 3 is connected to the upper rail 13 of the handrail frame portion 12 by the frame driving means 5 and 5. As shown in FIG. An upper mounting member 14 is provided on the main body frame 4, the upper mounting member 14 and the lower mounting member 15 are connected by a pin 16 such as a bolt, and a plurality of rollers 17, 17 are provided on the lower mounting member 15, These rollers 17 and 17 are inserted into the upper rail 13 so as to be able to roll, and a rack 19 that also serves to prevent the roller 17 from being detached is fixed to one side edge of the opening of the upper rail 13, and meshes with the rack 19 The lower mounting member 15 is provided with a motor 18 as a driving means for rotationally driving a gear (not shown). The upper rail 13 is made of a U-shaped steel material.

したがって、フレーム駆動機構５のモータ18を駆動すると、ラック19に噛合する前記ギヤが回転し、本体フレーム４が足場本体２の左右方向（長さ方向）に移動する。 Therefore, when the motor 18 of the frame driving mechanism 5 is driven, the gear meshing with the rack 19 rotates, and the main body frame 4 moves in the left-right direction (length direction) of the scaffold main body 2.

前記従動輪６は、鍔部103に接する移動位置において、前記鍔部103の上面を回転しながら移動し、前記足場本体２の荷重を支持するものであり、図４〜図６に示すように、前記本体フレーム４に取付部21，21を設け、これら取付部21，21に枢軸22により回動アーム23の基端を回動可能に設け、この回動アーム23の先端に前記従動輪６を遊転可能に設け、これにより従動輪６は、本体フレーム４に対して、枢軸22を中心に回動可能に設けられる。 The driven wheel 6 moves while rotating on the upper surface of the collar portion 103 at a movement position in contact with the collar portion 103, and supports the load of the scaffold body 2. As shown in FIGS. The main body frame 4 is provided with attachment portions 21 and 21, and the attachment portions 21 and 21 are provided with pivot shafts 22 so that the base ends of the rotation arms 23 can be pivoted. Thus, the driven wheel 6 is provided so as to be rotatable about the pivot shaft 22 with respect to the main body frame 4.

また、図４に示すように、回動アーム23の基端側には、前記本体フレーム４から離れる方向に短片部23Ａ，23Ａが一体に突設され、これら短片部23Ａ，23Ａの先端に枢軸24によりリンク片25，25の一端が回動可能に連結され、それら略弓形のリンク片25，25の他端が枢軸24Ａにより、切替え手段26の作動部27に回動可能に連結されている。また、前記取付部21，21には、前記枢軸22より本体フレーム４に近い位置に枢軸28が設けられ、この枢軸28に略Ｌ字形のリンク片29，29の一端が回動可能に連結され、それらリンク片29，29の他端が前記作動部27に前記枢軸24Ａにより回動可能に連結されている。また、前記取付部21の他方で、前記本体フレーム４に他側取付部31，31を設け、この他側取付部31，31に枢軸32により前記切替え手段26を回動可能に設けている。尚、図４に示すように、枢軸32は枢軸22，24，28より下方に位置する。 Further, as shown in FIG. 4, short piece portions 23A and 23A are integrally projected on the base end side of the rotating arm 23 in a direction away from the main body frame 4, and pivots are provided at the distal ends of the short piece portions 23A and 23A. 24, one ends of the link pieces 25, 25 are rotatably connected, and the other ends of the substantially arcuate link pieces 25, 25 are rotatably connected to the operating portion 27 of the switching means 26 by the pivot 24A. . The mounting portions 21 and 21 are provided with a pivot 28 at a position closer to the main body frame 4 than the pivot 22, and one end of a substantially L-shaped link piece 29 and 29 is rotatably connected to the pivot 28. The other ends of the link pieces 29 are connected to the operating portion 27 so as to be rotatable by the pivot shaft 24A. Further, on the other side of the mounting portion 21, other side mounting portions 31, 31 are provided on the main body frame 4, and the switching means 26 is rotatably provided on the other side mounting portions 31, 31 by a pivot 32. As shown in FIG. 4, the pivot 32 is located below the pivots 22, 24, and 28.

前記切替え手段26は、前記枢軸32により回動可能に設けられた本体33と、この本体33に対して進退する作動杆34とを備え、この作動杆34の先端に前記作動部27が設けられている。前記作動杆34は雄螺子部34Ａを有し、本体33に突設した操作軸37に、回転式のハンドル36を連結して、該操作軸37を回動することにより、前記本体33内に設けた螺子式送り機構により前記作動杆34が進退する。尚、図中、38は前記本体33に設けた筒状のカバーであり、前記作動杆34の基端側が収納される。 The switching means 26 includes a main body 33 rotatably provided by the pivot 32 and an operating rod 34 that moves forward and backward with respect to the main body 33, and the operating portion 27 is provided at the tip of the operating rod 34. ing. The operating rod 34 has a male screw portion 34A. A rotary handle 36 is connected to an operating shaft 37 projecting from the main body 33, and the operating shaft 37 is rotated to move the operating shaft 37 into the main body 33. The operating rod 34 is advanced and retracted by the provided screw type feeding mechanism. In the figure, reference numeral 38 denotes a cylindrical cover provided on the main body 33, and the proximal end side of the operating rod 34 is accommodated.

そして、図４に示す従動輪６の移動位置（鍔部103の上面に沿った位置）から、作動杆34が後退すると、作動部27は、リンク片29の枢軸28を中心とする円弧Ｋの軌跡に沿って後退し、この作動部27の移動により、リンク片25を介して回動アーム23が回動し、図５に示す非移動位置に従動輪６が移動する。そして、この非移動位置では、足場本体２を下げても、従動輪６は鍔部103に干渉しない。尚、本体フレーム４の左右の回動アーム23には、１つの従動輪６が設けられ、本体フレーム４の中央の回動アーム23には、２つの従動輪６，６が左右に並んで設けられている。 Then, when the operating rod 34 moves backward from the moving position of the driven wheel 6 shown in FIG. 4 (a position along the upper surface of the flange portion 103), the operating portion 27 has an arc K centered on the pivot 28 of the link piece 29. Retreating along the trajectory, the movement of the operating portion 27 causes the rotation arm 23 to rotate through the link piece 25, and the driven wheel 6 moves in the non-moving position shown in FIG. In this non-moving position, the driven wheel 6 does not interfere with the collar portion 103 even when the scaffold body 2 is lowered. The left and right rotating arms 23 of the main body frame 4 are provided with one driven wheel 6, and the central rotating arm 23 of the main body frame 4 is provided with two driven wheels 6 and 6 arranged side by side. It has been.

図７に示すように、前記駆動輪７は、取付枠41により前記本体フレーム４に取付けられている。前記取付枠41は枢軸43により前記本体フレーム４に回動可能に設けられ、その取付枠41に駆動輪７を枢軸42により回動可能に設ける。尚、前記枢軸42は、前記取付枠41に回動可能に設けられている。また、駆動輪７の他側には、該駆動輪７を上方に付勢する付勢手段44が設けられ、この付勢手段44は、一端を前記取付枠41に枢軸45により回動可能に連結し、他端を前記本体フレーム４に枢軸46により回動可能に連結し、コイルバネなどにより枢軸45，46間を開く方向の力を発するものである。 As shown in FIG. 7, the drive wheel 7 is attached to the main body frame 4 by an attachment frame 41. The mounting frame 41 is rotatably provided on the main body frame 4 by a pivot 43, and the drive wheel 7 is rotatably provided on the mounting frame 41 by a pivot 42. The pivot 42 is rotatably provided on the mounting frame 41. Further, on the other side of the driving wheel 7, urging means 44 for urging the driving wheel 7 upward is provided, and this urging means 44 is rotatable at one end by the pivot 45 to the mounting frame 41. The other end is rotatably connected to the main body frame 4 by a pivot 46, and a force in a direction to open the pivots 45, 46 is generated by a coil spring or the like.

前記駆動輪７は、鍔部103に吸着する磁石を備えた吸着車輪であり、図８〜図９に示すように、車輪フランジ111，これと一体に設けた二枚の側坂112，112，磁石114，114Ａ，磁石取付アーム115を備え、前記磁石114，114Ａは、磁石取付アーム115を介して、枢軸42に固着されている。前記車輪フランジ111は非磁性材からなり、磁石の磁場に影響を与えない。また、車輪フランジ111の全周には、駆動輪７が移動する際に、移動面である鍔部103を損傷しないようにゴムなどの柔軟材116を被覆している。 The driving wheel 7 is an attracting wheel provided with a magnet attracted to the flange portion 103, and as shown in FIGS. 8 to 9, a wheel flange 111, two side slopes 112, 112 provided integrally therewith, Magnets 114 and 114A and a magnet mounting arm 115 are provided, and the magnets 114 and 114A are fixed to the pivot 42 via the magnet mounting arm 115. The wheel flange 111 is made of a non-magnetic material and does not affect the magnetic field of the magnet. Further, the entire circumference of the wheel flange 111 is covered with a flexible material 116 such as rubber so as not to damage the flange 103 which is a moving surface when the drive wheel 7 moves.

そして、前記磁石取付アーム115を枢軸42に回動可能に設けた場合は、駆動輪７が鍔部103に沿って回転移動するとき、枢軸42に懸架された磁石114は、磁性体である鍔部103に対して最も磁場の強まる方向を自ずと向き、吸着力（吸磁力）はその方向に枢軸42を介して駆動輪７を押し付ける押し付け力として作用する。 When the magnet mounting arm 115 is rotatably provided on the pivot 42, when the drive wheel 7 rotates along the flange 103, the magnet 114 suspended on the pivot 42 is a magnetic body. The direction in which the magnetic field is strongest is naturally directed to the portion 103, and the attractive force (absorbing force) acts as a pressing force for pressing the driving wheel 7 through the pivot shaft 42 in that direction.

この駆動輪７の吸着力は、磁石・磁性体間のギャップと磁石４の形状によって決まる。このクラスの駆動輪７であれば、車輪フランジ111にかなり厚手の柔軟材116を巻いたとしても車輪フランジ111の厚さは１０ｍｍあれば十分であるから車輪フランジ111と磁石114とのキャップを１２ｍｍとすれば吸着力は２５０kgf位まで期待できる。この時、磁石114及びそれ以外の車輪重量はそれぞれ８kg、全体で１６kgであるから、車輪単位質量当たり吸着力は約１６kgf/kgとなる。 The attractive force of the drive wheel 7 is determined by the gap between the magnet and the magnetic body and the shape of the magnet 4. In this class of driving wheels 7, even if a rather thick flexible material 116 is wound around the wheel flange 111, a thickness of 10 mm is sufficient for the wheel flange 111, so the cap between the wheel flange 111 and the magnet 114 is 12 mm. If so, the adsorption power can be expected up to about 250 kgf. At this time, the weight of the magnet 114 and the other wheels is 8 kg, respectively, and the total weight is 16 kg. Therefore, the adsorption force per wheel unit mass is about 16 kgf / kg.

一方、磁石114の幅Ｌに注目すると、接地中心から外側に行くにつれて磁石114と鍔部103とのギャップが増大するため、この方向に磁石114を大きくしてもあまり吸着力の増加は期待できず、磁石114の幅Ｌをある程度以上大きくする必要はない。 On the other hand, paying attention to the width L of the magnet 114, the gap between the magnet 114 and the flange 103 increases from the center of contact to the outside. Therefore, even if the magnet 114 is enlarged in this direction, an increase in the attractive force can be expected. Therefore, it is not necessary to increase the width L of the magnet 114 to a certain extent.

また、前記取付枠41には、伸縮手段51の基端が枢軸51Ａにより回動可能に設けられ、その伸縮手段51の伸縮杆52の先端52Ａがリンク片53に回動可能に連結され、このリンク片53は、前記枢軸42に連結され、駆動手段たるモータ54により前記伸縮杆52が進退する。 The base 41 of the expansion / contraction means 51 is rotatably provided on the mounting frame 41 by a pivot 51A, and the distal end 52A of the expansion / contraction bar 52 of the expansion / contraction means 51 is rotatably connected to the link piece 53. The link piece 53 is connected to the pivot shaft 42, and the telescopic rod 52 is advanced and retracted by a motor 54 as a driving means.

したがって、磁石114が鍔部103を向いた位置で、伸縮手段51を駆動すると、磁石114の向きが変わり、吸磁力が下がり、鍔部103から駆動輪７を外すことができる。 Therefore, when the expansion / contraction means 51 is driven at a position where the magnet 114 faces the flange 103, the direction of the magnet 114 is changed, the attractive force is lowered, and the drive wheel 7 can be removed from the flange 103.

また、前記駆動輪７の内部には、移動駆動手段であるモータ駆動の回転駆動機構56が設けられ、この回転駆動機構56は前記枢軸42に固着されており、前記モータで駆動する回転伝達輪57が前記車輪フランジ111の内周に当接し、その回転伝達輪57が回転することにより、車輪フランジ111が回転する。 Further, a motor-driven rotation drive mechanism 56 that is a movement drive means is provided inside the drive wheel 7, and this rotation drive mechanism 56 is fixed to the pivot 42, and is a rotation transmission wheel that is driven by the motor. The wheel flange 111 rotates when the wheel 57 contacts the inner periphery of the wheel flange 111 and the rotation transmission wheel 57 rotates.

次に、前記構成につき、その作用を説明すると、図１などに示すように、従動輪６を鍔部103の上面に配置すると共に、駆動輪７を付勢手段44により鍔部103の下面に押し付け、それら従動輪６と駆動輪７により鍔部103を挟んで足場本体２を橋桁102の下に吊下げる。尚、前記移動支持装置３の本体フレーム４は、モータ18により上桟13に沿って移動可能であるから、両側の本体フレーム４の位置や間隔を橋梁101に合わせて調整できる。 Next, the operation of the above configuration will be described. As shown in FIG. 1 and the like, the driven wheel 6 is disposed on the upper surface of the flange portion 103 and the drive wheel 7 is placed on the lower surface of the flange portion 103 by the urging means 44. The scaffold body 2 is suspended below the bridge girder 102 with the flange 103 interposed between the driven wheel 6 and the drive wheel 7. Since the main body frame 4 of the moving support device 3 can be moved along the upper rail 13 by the motor 18, the positions and intervals of the main body frames 4 on both sides can be adjusted according to the bridge 101.

前記吊下げ状態において、駆動輪７の磁石114が磁性材からなる鍔部103に磁力により吸着することに足場本体２を支持するから、荷重的に従動輪６を小型化することができる。そして、回転駆動機構56により駆動輪７を回転駆動し、これによる回転力によって橋桁102の長さ方向に移動し、所定位置で停止して橋梁101下部のメンテナンスを行う。このメンテナンスには塗装による補修作業や各種の点検作業などが挙げられる。尚、回転駆動機構56を用いずに、駆動輪７を手動により回転し、回転力を付与するようにしてもよく、この場合は、例えば、駆動輪７の回転中心にハンドル（図示せず）などを着脱可能に取り付ける箇所を設け、そこに取り付けたハンドルを手動で操作して駆動輪７を回転するようにしてもよい。 In the suspended state, the scaffold body 2 is supported by the magnet 114 of the driving wheel 7 being attracted to the flange 103 made of a magnetic material by a magnetic force, so that the driven wheel 6 can be reduced in size. Then, the driving wheel 7 is rotationally driven by the rotational driving mechanism 56, and is moved in the length direction of the bridge girder 102 by the rotational force thereby, and stopped at a predetermined position to perform maintenance on the lower portion of the bridge 101. This maintenance includes repair work by painting and various inspection work. Instead of using the rotation drive mechanism 56, the drive wheel 7 may be manually rotated to apply a rotational force. In this case, for example, a handle (not shown) is provided at the rotation center of the drive wheel 7. Or the like, and a drive wheel 7 may be rotated by manually operating a handle attached thereto.

移動支持装置３により移動中、図１０に示すように、添接板105，105に鍔部103を挟み、ボルトナット106により挟着することにより橋桁102，102を連結した箇所が、図１の右側にある場合、切替え手段26により右側の従動輪６を、図５に示したように、非移動位置とする。このようにすることにより、従動輪６が前記添接板105などに干渉することなく、移動することができる。１つの従動輪６を非移動位置に動かしても、中央と左の２箇所の従動輪６と、２つの駆動輪７により、足場本体２は安定して吊下げられる。右側の従動輪６を非移動位置にした後、図１中右側に移動すると、駆動輪７は磁石114により添接板105箇所も吸着状態で移動し、右側の従動輪６が不連続部である添接板105を通り過ぎたら再び移動位置に戻し、同様にして、中央側の従動輪６，６を非移動位置にして不連続部を通ってから、移動位置に戻し、次に、左側の従動輪６を非移動位置にして不連続部を通ってから、移動位置に戻し、このようにして、鍔部103に不連続部が有っても、足場本体２を移動することができる。 While moving by the moving support device 3, as shown in FIG. 10, the place where the bridge girder 102, 102 is connected by sandwiching the flange 103 between the attachment plates 105, 105 and the bolt nut 106 is shown in FIG. If it is on the right side, the right driven wheel 6 is brought into the non-moving position by the switching means 26 as shown in FIG. By doing so, the driven wheel 6 can move without interfering with the contact plate 105 or the like. Even if one driven wheel 6 is moved to the non-moving position, the scaffold main body 2 is stably suspended by the two driven wheels 6 at the center and the left and the two drive wheels 7. When the right driven wheel 6 is moved to the right side in FIG. 1 after being moved to the non-moving position, the driving wheel 7 is also moved by the magnet 114 in the attracting plate 105 portion, and the right driven wheel 6 is discontinuous. After passing through a certain contact plate 105, it is returned to the moving position again. Similarly, the driven wheels 6 and 6 on the center side are set to the non-moving position, passed through the discontinuous portion, and then returned to the moving position. The driven wheel 6 is set to the non-moving position, passes through the discontinuous portion, and then returned to the moving position. In this way, the scaffold main body 2 can be moved even if the hook portion 103 has the discontinuous portion.

そして、磁石114を備えた駆動輪７を、回転駆動機構56により駆動し、橋桁102の鍔部103を代用レールとして使用し、専用の走行レールが不要であるため、仮設式移動足場として複数の橋梁に対して転用が可能となる。また、磁石114を備えた駆動輪７を用いることにより、鍔部103の不連続部においても、駆動輪７を吸着したまま走行することができる。さらに、足場本体２は構造がシンプル・堅牢であるため、足場本体２のメンテナンス性に優れる。また、仮設式でありながら常設足場と同様に耐久性を備え、休止時には橋梁101に長期間係留・保管することができる。さらに、橋梁101上などの現場での組立作業が無いため、設置を迅速に行うことができる。 And the drive wheel 7 provided with the magnet 114 is driven by the rotational drive mechanism 56, and the brim 103 of the bridge girder 102 is used as a substitute rail, and a dedicated traveling rail is not required. Diversion is possible for bridges. In addition, by using the drive wheel 7 provided with the magnet 114, it is possible to travel while adsorbing the drive wheel 7 even in the discontinuous portion of the flange 103. Furthermore, since the scaffold body 2 has a simple and robust structure, the scaffold body 2 is excellent in maintainability. Moreover, although it is a temporary type, it has durability like a permanent scaffold, and can be moored and stored on the bridge 101 for a long period of time when it is suspended. Furthermore, since there is no assembly work at the site such as on the bridge 101, the installation can be performed quickly.

このように本実施例では、請求項１に対応して、作業用の足場本体２と、この足場本体２に設けられ該足場本体２を橋梁101の鍔部103に吊下支持して移動する移動支持装置３とを備えた足場装置であって、移動支持装置３は、鍔部103上を移動する複数の上回転移動手段たる従動輪６.６と、鍔部103下に押し付けられる又は吸着する下回転移動手段たる駆動輪７と、従動輪６を鍔部103上の移動位置と非移動位置とに切替える切替え手段26とを備え、それら従動輪６及び駆動輪７により鍔部103を挟んだ状態で前記駆動輪７の回転力により足場本体２を移動するから、橋梁101の鍔部103を受動輪６と駆動輪７とにより挟んで足場本体２を吊り下げ、駆動輪７の回転力により移動する。そして、橋桁接合部の添接板105やボルト106、あるいは橋桁に横桁が連結された箇所などでは、移動を停止し、従動輪６を非移動位置に切り替えて、前記箇所を通過した後、従動輪６を移動位置に切り替えて移動することができる。また、駆動輪７は鍔部102に押し付けられ又は吸着するから、その駆動輪７により確実に足場本体２を移動することができる。 Thus, in this embodiment, corresponding to claim 1, the working scaffold main body 2 and the scaffold main body 2 provided on the scaffold main body 2 are suspended and supported by the flange 103 of the bridge 101 and moved. It is a scaffold apparatus provided with the movement support apparatus 3, Comprising: The movement support apparatus 3 is pressed or adsorb | sucked under the collar 103 with the driven wheel 6.6 which is a some upper rotational movement means which moves on the collar 103. Driving wheel 7 as a lower rotational movement means, and switching means 26 for switching the driven wheel 6 between a moving position and a non-moving position on the collar 103, and sandwiching the collar 103 between the driven wheel 6 and the driving wheel 7 In this state, the scaffold body 2 is moved by the rotational force of the driving wheel 7. Therefore, the scaffold body 2 is suspended by sandwiching the flange 103 of the bridge 101 between the passive wheel 6 and the driving wheel 7. Move by. And in the place where the crossing plate 105 and the bolt 106 of the bridge girder joint or the cross beam is connected to the bridge girder, the movement is stopped, the driven wheel 6 is switched to the non-moving position, and after passing through the position, The driven wheel 6 can be moved by switching to the moving position. Further, since the drive wheel 7 is pressed against or adsorbed to the collar portion 102, the scaffold body 2 can be reliably moved by the drive wheel 7.

そして、橋梁101の鍔部103では、その上側は添接板105以外に横桁の連結箇所やウエブの添接板などがあるのに対して、下側は添接板105はあるが、上側に比べて、走行の妨げとなる箇所が少なく、その鍔部101の下に押し当て又は吸着する駆動輪７を回転して移動するから、足場本体２をスムーズに移動させることができる。また、足場本体２を駆動輪７の回転力により移動するように構成したことにより、従動輪６に、回転駆動手段などを組み込む必要がないから、従動輪６を軽量化することができ、これにより従動輪６の位置を変える切替え手段26も簡易なもので済む。 In addition, in the flange 103 of the bridge 101, the upper side includes a connecting portion of a cross beam and a web attachment plate in addition to the attachment plate 105, while the lower side includes the attachment plate 105 but the upper side. Compared to the above, there are few places that obstruct travel, and the drive wheel 7 that is pressed or adsorbed under the collar 101 rotates and moves, so that the scaffold body 2 can be moved smoothly. Further, since the scaffold body 2 is configured to move by the rotational force of the drive wheel 7, it is not necessary to incorporate a rotation drive means or the like in the driven wheel 6, so that the driven wheel 6 can be reduced in weight. Therefore, the switching means 26 for changing the position of the driven wheel 6 is also simple.

したがって、橋梁に専用レールなどを設ける必要がなく、接合箇所や横桁連結箇所などがある橋桁102の鍔部103を用いて足場本体２を連続的に移動することができる。 Therefore, it is not necessary to provide a dedicated rail or the like on the bridge, and the scaffold main body 2 can be continuously moved using the collar portion 103 of the bridge girder 102 where there is a joint location or a cross girder connection location.

また、実施例上の効果として、移動支持装置３には、複数の本体フレーム４，４を設け、この本体フレーム４に駆動輪６及び従動輪７を設け、その本体フレーム４，４がフレーム駆動機構５により、足場本体２の左右方向（長さ方向）に移動可能に構成したから、橋梁101に鍔部103，103の間隔に対応して、本体フレーム４，４の間隔を調整でき、汎用性に優れたものとなる。また、下回転移動手段が、鍔部103に吸着する磁石114を有する駆動輪７であるから、その駆動輪７は磁石114の磁力により鍔部103に吸着する。 Further, as an effect of the embodiment, the movement support device 3 is provided with a plurality of main body frames 4 and 4, and the main body frame 4 is provided with driving wheels 6 and driven wheels 7, and the main body frames 4 and 4 are frame-driven. Since the mechanism 5 is configured to be movable in the left-right direction (length direction) of the scaffold body 2, the distance between the main body frames 4, 4 can be adjusted in accordance with the distance between the ribs 103, 103 on the bridge 101. Excellent in properties. Further, since the lower rotational movement means is the drive wheel 7 having the magnet 114 that is attracted to the flange 103, the drive wheel 7 is attracted to the flange 103 by the magnetic force of the magnet 114.

図１２は、本発明の実施例２を示し、上記実施例１と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、同図は、橋梁101の橋桁102Ａの他の例を示し、この橋桁102Ａは、鋼材を角形に形成したコラムなどからなり、その下部左右には前記鍔部103が橋桁102Ａの長さ方向に連続して設けられている。 FIG. 12 shows a second embodiment of the present invention. The same reference numerals are given to the same portions as those in the first embodiment, and detailed description thereof will be omitted. The bridge girder 102A is composed of a column made of a steel material in a square shape, and the flanges 103 are continuously provided in the length direction of the bridge girder 102A on the lower left and right sides thereof.

図１３〜図２０は、本発明の実施例３を示し、上記各実施例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例は、前記足場本体２を固定足場本体２Ａと可動足場本体２Ｂに分割して構成しており、固定足場本体２Ａは実施例１の足場本体２と同一構成であり、前記移動支持装置３が設けられ、可動足場本体２Ｂは前記固定足場本体２Ａ内に挿入可能とするため、固定足場本体２Ａより前後幅が狭く、かつ低く形成されており、前記固定足場本体２Ａの左右方向両側から外側に向ってスライド可能に設けられている。 FIGS. 13-20 shows Example 3 of this invention, attaches | subjects the same code | symbol to the same part as each said Example, and abbreviate | omits the detailed description, This example is the said scaffold main body 2 Is divided into a fixed scaffold body 2A and a movable scaffold body 2B. The fixed scaffold body 2A has the same structure as the scaffold body 2 of the first embodiment, and is provided with the movement support device 3, and the movable scaffold body 2B. In order to be able to be inserted into the fixed scaffold main body 2A, the front and rear widths of the fixed scaffold main body 2A are narrower and lower than the fixed scaffold main body 2A. ing.

図１３〜図１７に示すように、可動足場本体２Ｂはスライド駆動手段61により固定足場本体２Ａに対してスライド駆動する。そのスライド駆動手段61は、固定足場本体２Ａの前後方向両側下部に支持ローラ62，62を回動自在に設け、これら支持ローラ62，62は、可動足場本体２Ｂの下枠部11の底部を支持して回動し、また、可動足場本体２Ｂの前後方向両側に規制ローラ63，63を設け、これら規制ローラ63，63は固定足場本体２Ａの下枠部11の規制溝64，64内を移動し、これにより固定足場本体２Ａに対して可動足場本体２Ｂの高さ位置が規制されている。さらに、スライド駆動手段61は、前記可動足場本体２Ｂの下枠部11の下面に、ラック65を設け、このラック65は可動足場本体２Ｂの前後方向中央で左右方向に設けられ、そのラック65に歯合するギヤ66，66Ａが前記固定足場本体２Ａに設けられており、一方のギヤ66を駆動する駆動手段たるモータ67を前記固定足場本体２Ａに設け、一方のギヤ66の軸66Ｇにはスプロケット68を設け、このスプロケット68の回転をチェーン69により伝達するスプロケット68Ａを、他方のギヤ66Ａの軸68Ｇに設けている。尚、図中70は、前記ギヤ66Ａ及びスプロケット67Ａの軸68Ｇを固定足場本体２Ａに回転可能に取り付ける取付部材70であり、螺子棒とナットとからなる位置調整部70Ａにより、チェーン69が所定の張力になるように前記軸68Ｇを固定することができる。 As shown in FIGS. 13 to 17, the movable scaffold body 2 B is slid and driven with respect to the fixed scaffold body 2 A by the slide drive means 61. The slide driving means 61 is rotatably provided with support rollers 62, 62 on both lower sides in the front-rear direction of the fixed scaffold main body 2A, and these support rollers 62, 62 support the bottom of the lower frame portion 11 of the movable scaffold main body 2B. In addition, restriction rollers 63, 63 are provided on both sides in the front-rear direction of the movable scaffold body 2B, and these restriction rollers 63, 63 move in the restriction grooves 64, 64 of the lower frame portion 11 of the fixed scaffold body 2A. Thus, the height position of the movable scaffold body 2B is restricted with respect to the fixed scaffold body 2A. Further, the slide driving means 61 is provided with a rack 65 on the lower surface of the lower frame portion 11 of the movable scaffold body 2B. The rack 65 is provided in the left-right direction at the center in the front-rear direction of the movable scaffold body 2B. Gears 66 and 66A that mesh with each other are provided on the fixed scaffold main body 2A, and a motor 67 that is a driving means for driving one of the gears 66 is provided on the fixed scaffold main body 2A. 68, and a sprocket 68A for transmitting the rotation of the sprocket 68 by the chain 69 is provided on the shaft 68G of the other gear 66A. In the figure, reference numeral 70 denotes an attachment member 70 for rotatably mounting the shaft 66G of the gear 66A and the sprocket 67A to the fixed scaffold body 2A. The chain 69 is fixed to a predetermined position by a position adjusting portion 70A composed of a screw rod and a nut. The shaft 68G can be fixed so as to be in tension.

したがって、モータ67を駆動すると、ギヤ66，66Ａが同一方向に回動し、これらギヤ66，66Ａに歯合するラック65を備えた可動足場本体２Ｂが、固定足場本体２Ａに対してスライド移動する。 Accordingly, when the motor 67 is driven, the gears 66 and 66A rotate in the same direction, and the movable scaffold body 2B having the rack 65 meshing with the gears 66 and 66A slides relative to the fixed scaffold body 2A. .

また、前記固定足場本体２Ａの左右方向一側には、その下枠部11の底部前後に張出杆71，71を設けており、この張出杆71の部分には、手摺枠部12はなく、下枠部11が設けられている。 Further, on the one side in the left-right direction of the fixed scaffold main body 2A, there are provided overhangs 71, 71 around the bottom of the lower frame part 11, and the handrail frame part 12 has The lower frame part 11 is provided.

次に、前記構成につき、その作用を説明すると、足場本体２を縮めた状態、即ち固定足場本体２Ａに移動足場本体２Ｂを収めた状態とし、この足場本体２を、トラックなどの運搬車両81に搭載して、橋梁101の現場まで搬送し、可動足場本体２Ｂを張出杆71側にスライドして伸ばし、この状態では可動及び固定足場本体２Ａ，２Ｂが左右方向中央で部分的に重複している。そして、図１９に示すように、伸ばした状態の足場本体２の中央側をクレーン72などの汎用機械を用いて吊上げる。この場合、クレーン72に設けた吊上げ用の索条73を、張出杆71の先端側と、これと足場本体２の重心を挟んで対象位置の固定足場本体２Ａの箇所とに係止することにより、足場本体２を安定して吊上げることができる。すなわち、張出杆71により可動足場本体２Ｂ側が支持され、固定足場本体２Ａと移動足場本体２Ｂの重複部分に、吊上げ時に無理な力が加わることがない。 Next, the operation of the above structure will be described. The scaffold body 2 is contracted, that is, the movable scaffold body 2B is housed in the fixed scaffold body 2A, and the scaffold body 2 is attached to a transport vehicle 81 such as a truck. It is mounted and transported to the site of the bridge 101, and the movable scaffold body 2B is slid and extended toward the overhanging rod 71. In this state, the movable and fixed scaffold bodies 2A and 2B are partially overlapped at the center in the left-right direction. Yes. Then, as shown in FIG. 19, the center side of the scaffold body 2 in the stretched state is lifted using a general-purpose machine such as a crane 72. In this case, the lifting rope 73 provided on the crane 72 is locked to the distal end side of the overhang bar 71 and the location of the fixed scaffold body 2A at the target position with the center of gravity of the scaffold body 2 interposed therebetween. Thus, the scaffold body 2 can be stably lifted. That is, the movable scaffold main body 2B side is supported by the overhang bar 71, and an excessive force is not applied to the overlapping part of the fixed scaffold main body 2A and the movable scaffold main body 2B when lifting.

そして、吊り下しの際には、長さ方向を橋梁101の長さ方向に合わせて足場本体２を橋桁102の下まで吊り下し、略９０度旋回させる（図１９）。同図に示すように、可動足場本体２Ｂを張出すことにより、該可動足場本体２Ｂがウェイトとして作用し、固定足場本体２Ａを橋桁102の下方に位置させ、移動支持装置３を鍔部103にセットすることができる。また、図２０に示すように、足場本体２を移動支持装置３により鍔部103に吊下げた後、可動足場本体２Ｂを、長さ方向内側に移動し、さらに逆側の外側に移動し、固定足場本体２Ｂの他側から張出させる。このように可動足場本体２Ｂを他側にスライドさせることにより、橋梁101の下部の広い範囲でメンテナンスを行うことができる。 Then, when suspending, the scaffold body 2 is suspended below the bridge girder 102 with its length direction matched to the length direction of the bridge 101, and is turned approximately 90 degrees (FIG. 19). As shown in the figure, by extending the movable scaffold body 2B, the movable scaffold body 2B acts as a weight, the fixed scaffold body 2A is positioned below the bridge girder 102, and the movable support device 3 is attached to the collar portion 103. Can be set. In addition, as shown in FIG. 20, after the scaffold body 2 is suspended from the heel part 103 by the movement support device 3, the movable scaffold body 2 B is moved inward in the length direction and further moved to the outer side on the opposite side, The fixed scaffold body 2B is extended from the other side. By sliding the movable scaffold body 2B to the other side in this way, maintenance can be performed over a wide range below the bridge 101.

尚、図１９に示すように、移動支持装置３の左右の本体フレーム４，４の間隔が、橋脚102，102の間隔より広くなるようにしておき、図１９の高さ位置から、足場本体２の高さを、鍔部103が従動輪６と駆動輪７の間にくる位置まで吊上げ、この状態で、フレーム駆動機構５，５により左右の本体フレーム４，４を中央側に移動し、それら従動輪６と駆動輪７との間に鍔部103を挟むようにして、図２０に示すように、足場本体２を橋梁101に吊り下げる。 As shown in FIG. 19, the distance between the left and right body frames 4, 4 of the movement support device 3 is made larger than the distance between the bridge piers 102, 102, and the scaffold body 2 from the height position in FIG. 19. The left and right main body frames 4 and 4 are moved to the center side by the frame drive mechanisms 5 and 5 in the state where the collar portion 103 is lifted up to a position where the flange 103 comes between the driven wheel 6 and the drive wheel 7. As shown in FIG. 20, the scaffold body 2 is suspended from the bridge 101 with the flange 103 sandwiched between the driven wheel 6 and the drive wheel 7.

そして、橋梁101の左右方向（幅方向）に移動可能な従動輪６及び駆動輪７と、可動足場本体２Ｂがスライドする構成により、橋上から橋下に吊り込み設置が可能で、その際、可動足場本体２Ｂをカウンターウェイトとして利用し、専用のカウンターウェイトが不要又は少なく済む。 In addition, the driven wheel 6 and the driving wheel 7 that can move in the left-right direction (width direction) of the bridge 101 and the movable scaffold body 2B slide, so that it can be installed suspended from the bridge to the bottom of the bridge. The main body 2B is used as a counterweight, and a dedicated counterweight is unnecessary or small.

このように本実施例では、請求項２に対応して、足場本体２は、固定足場本体２Ａと、この固定足場本体２Ａの長さ方向にスライド可能な可動足場本体２Ｂと、この可動足場本体２Ｂを固定足場本体２Ａに対してスライド駆動する駆動手段たるモータ67とを備えるから、可動足場本体２Ｂを外側にスライドさせて足場本体２を伸ばした状態で、該足場本体２の中央側の重心位置を吊上げる。このように張出した可動足場本体２Ｂがバランスウェイトの作用をするため、構造的に無駄のない足場装置を得ることができる。 Thus, in this embodiment, corresponding to claim 2, the scaffold body 2 includes a fixed scaffold body 2A, a movable scaffold body 2B that can slide in the length direction of the fixed scaffold body 2A, and the movable scaffold body. 2B is provided with a motor 67 which is a driving means for slidingly driving the 2B with respect to the fixed scaffold main body 2A. Therefore, the center of gravity of the scaffold main body 2 in the center side of the scaffold main body 2 can be extended with the movable scaffold main body 2B slid outward and the scaffold main body 2 extended. Lift the position. Since the movable scaffold body 2B protruding in this manner acts as a balance weight, a scaffold apparatus that is structurally useless can be obtained.

この場合、吊上げた足場本体２の高さを、鍔部103が従動輪６と駆動輪７の間にくるように吊上げ、この状態で、左右の本体フレーム４，４を足場本体２の長さ方向に移動し、それぞれの従動輪６と駆動輪７との間に鍔部103を挟むようにして足場本体２を橋梁101に吊り下げる。 In this case, the height of the suspended scaffold body 2 is lifted so that the collar 103 is between the driven wheel 6 and the drive wheel 7, and in this state, the left and right body frames 4, 4 are length of the scaffold body 2. The scaffold body 2 is suspended from the bridge 101 so as to sandwich the flange 103 between the driven wheel 6 and the drive wheel 7.

尚、従動輪６は非移動位置に位置させた状態で、鍔部103の下に駆動輪７を合わせ、従動輪６を移動位置に切り替えて足場本体２を橋梁101に吊り下げるようにしてもよい。 In addition, with the driven wheel 6 positioned at the non-moving position, the driving wheel 7 is aligned under the flange 103, the driven wheel 6 is switched to the moving position, and the scaffold body 2 is suspended from the bridge 101. Good.

また、可動足場本体２Ｂは、固定足場本体２Ａの両側にスライド可能であるから、橋梁に吊下げ後は、図２０（Ｂ）に示したように、内側にスライドして作業を行うことができる。 In addition, since the movable scaffold body 2B can slide on both sides of the fixed scaffold body 2A, after being suspended on the bridge, the movable scaffold body 2B can be slid inward as shown in FIG. 20B. .

以上、本発明の実施例について詳述したが、本発明は、前記実施例に限定されるものではなく、本発明の要旨の範囲内で種々の変形実施が可能である。例えば、上，下回転移動手段は各種のものを用いることができ、例えば、回転する球状のものや、クローラ式のものなどでもよい。また、移動駆動手段も、実施例に示した駆動輪に内蔵するものに限らず、回転操作用のハンドルなどを用いて手動により回転するなどの各種の手段を用いることができる。さらに、実施例では、固定足場本体に１つの可動足場本体を設けたが、可動足場本体を２つ以上にしてもよい。また、実施例では、本体フレームに複数の下回転移動手段を備えるものを示したが、下回転移動手段は、１個でも、３個以上でもよい。さらに、下回転移動手段は、回転時に鍔部と滑りが発生しない程度に鍔部下に押し付けられていればよい。さらに、実施例では、伸縮手段51により磁石の向きを変えたが、磁石の向きを変える手段も適宜選定可能である。 As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, various types of upper and lower rotational movement means can be used. For example, a rotating spherical type or a crawler type may be used. In addition, the moving drive means is not limited to that built in the drive wheel shown in the embodiment, and various means such as manual rotation using a handle for rotation operation or the like can be used. Furthermore, in the embodiment, one movable scaffold body is provided in the fixed scaffold body, but two or more movable scaffold bodies may be provided. In the embodiment, the main body frame is provided with a plurality of lower rotation moving means. However, the number of lower rotation moving means may be one or three or more. Furthermore, the lower rotation moving means only needs to be pressed under the collar so as not to slip with the collar during rotation. Furthermore, in the embodiment, the direction of the magnet is changed by the expansion / contraction means 51, but means for changing the direction of the magnet can also be appropriately selected.

本発明の実施例１を示す足場装置の側面図である。It is a side view of the scaffold apparatus which shows Example 1 of this invention. 同上、足場装置の正面図である。It is a front view of a scaffold apparatus same as the above. 同上、足場本体上部の断面図である。It is sectional drawing of a scaffold main body upper part same as the above. 同上、移動位置の上回転移動手段及び切替え手段の正面図である。FIG. 6 is a front view of the upper rotation moving means and the switching means in the moving position. 同上、非移動位置の上回転移動手段及び切替え手段の正面図である。FIG. 6 is a front view of the upper rotation moving means and the switching means in the non-moving position. 同上、切替え手段周りの平断面図である。It is a plane sectional view around the switching means. 同上、下回転移動手段周りの側面図である。It is a side view around a lower rotational movement means same as the above. 同上、下回転移動手段の側面図である。It is a side view of a downward rotation moving means same as the above. 同上、下回転移動手段の断面図である。FIG. 6 is a cross-sectional view of the lower rotation moving means. 同上、下回転移動手段の不連続部における吸着力の方向を示す説明側面図である。It is an explanatory side view which shows the direction of the adsorption | suction force in the discontinuous part of a lower rotation moving means same as the above. 同上、下回転移動手段の平坦部における吸着力の方向を示す説明側面図である。It is an explanatory side view which shows the direction of the adsorption | suction force in the flat part of a lower rotation moving means same as the above. 本発明の実施例２を示す足場装置の正面図である。It is a front view of the scaffold apparatus which shows Example 2 of this invention. 本発明の実施例３を示す足場装置の側面図である。It is a side view of the scaffold apparatus which shows Example 3 of this invention. 同上、足場装置の側面図である。It is a side view of a scaffold apparatus same as the above. 同上、可動足場本体をスライド駆動するスライド駆動手段の断面図である。It is sectional drawing of the slide drive means which slide-drives a movable scaffold main body same as the above. 同上、スライド駆動手段の要部の平面図である。It is a top view of the principal part of a slide drive means same as the above. 同上、スライド駆動手段の要部の側面図である。It is a side view of the principal part of a slide drive means same as the above. 同上、足場装置の現場搬入を説明する側面図である。It is a side view explaining on-site carrying of a scaffold apparatus same as the above. 同上、足場装置の吊り下し作業を説明する側面図である。It is a side view explaining suspension work of a scaffold apparatus same as the above. 同上、足場装置の吊下げ状態を説明する側面図である。It is a side view explaining the suspended state of a scaffold apparatus same as the above.

符号の説明Explanation of symbols

１足場装置
２足場本体
３移動支持装置
４本体フレーム
５フレーム駆動機構
６従動輪（上回転移動手段）
７駆動輪（下回転移動手段）
26 切替え手段
２Ａ固定足場本体
２Ｂ可動足場本体
61 スライド駆動手段
101 橋梁
102 橋桁
102Ａ橋桁
103 鍔部

DESCRIPTION OF SYMBOLS 1 Scaffolding device 2 Scaffolding body 3 Movement support device 4 Body frame 5 Frame drive mechanism 6 Driven wheel (upper rotation moving means)
7 Drive wheel (lower rotational movement means)
26 Switching means 2A Fixed scaffold body 2B Movable scaffold body
61 Slide drive means
101 bridge
102 bridge girder
102A bridge girder
103

Claims

作業用の足場本体と、この足場本体に設けられ該足場本体を橋梁の鍔部に吊下支持して移動する移動支持装置とを備えた足場装置であって、前記移動支持装置は、前記鍔部上を移動する複数の上回転移動手段と、前記鍔部下に押し付けられる又は吸着する下回転移動手段と、前記上回転移動手段を前記鍔部上の移動位置と非移動位置とに切替える切替え手段とを備え、それら上，下回転移動手段により前記鍔部を挟んだ状態で前記下回転移動手段の回転力により前記足場本体を移動することを特徴とする足場装置。 A scaffold device comprising a working scaffold main body and a moving support device that is provided on the scaffold main body and moves while supporting the scaffold main body by suspending it on a brim part of a bridge. A plurality of upper rotational movement means that move on the part, a lower rotational movement means that is pressed or adsorbed under the collar part, and a switching means that switches the upper rotational movement means between a movement position on the collar part and a non-moving position. And the scaffold main body is moved by the rotational force of the lower rotational movement means with the buttocks sandwiched by the lower rotational movement means.

前記足場本体は、固定足場本体と、この固定足場本体の長さ方向にスライド可能な可動足場本体と、この可動足場本体を前記固定足場本体に対してスライド駆動する駆動手段とを備えることを特徴とする請求項１記載の足場装置。

The scaffold main body includes a fixed scaffold main body, a movable scaffold main body that is slidable in a length direction of the fixed scaffold main body, and a drive unit that slide-drives the movable scaffold main body with respect to the fixed scaffold main body. The scaffold device according to claim 1.