JP2017101384A - Cutting holding device and cutting holding method - Google Patents

Cutting holding device and cutting holding method Download PDF

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JP2017101384A
JP2017101384A JP2015232758A JP2015232758A JP2017101384A JP 2017101384 A JP2017101384 A JP 2017101384A JP 2015232758 A JP2015232758 A JP 2015232758A JP 2015232758 A JP2015232758 A JP 2015232758A JP 2017101384 A JP2017101384 A JP 2017101384A
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cutting
gripping
cut
wire saw
steel beam
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JP6590207B2 (en
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廣瀬　豊
Yutaka Hirose
豊 廣瀬
浩一 栗毛野
Koichi Kurigeno
浩一 栗毛野
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Construction Co Ltd
Shimizu Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a cutting holding device and a cutting holding method capable of enhancing working efficiency.SOLUTION: In a cutting holding device 10 having holding means 12 for holding a substantially rod-like cutting object 1 and cutting means 14 for cutting the cutting object 1, and cutting the cutting object 1 in a holding state, the holding means 12 holds the cutting object 1 from the substantially orthogonal direction Y to the extending direction X of the cutting object 1, and the cutting means 14 is arranged on both sides of the holding means 12 at a predetermined interval in the extending direction X from the holding means 12, and in a state of holding the cutting object 1 by the holding means 12, both sides of the cutting object 1 are simultaneously cut by the cutting means 14 on both sides of the holding means 12.SELECTED DRAWING: Figure 1

Description

本発明は、例えば建物解体作業において鉄骨などの部材を切り出すのに好適な切断把持装置および切断把持方法に関するものである。   The present invention relates to a cutting and gripping apparatus and a cutting and gripping method suitable for cutting out members such as steel frames in, for example, building demolition work.

従来、鉄骨造の建物解体工事における鉄骨切断作業は、解体用重機の鉄骨カッターアタッチメント（圧砕機）による加力切断や、これにガス切断を併用した鉄骨引き倒しなどの方法により実施している。しかしながら、このような切断方法では、重機による加力が過剰に加わったり、加力方向が微妙に変化することで鉄骨造建物の倒壊につながるおそれがある。また、重機として切断用重機と把持用重機の２台が必要になるという問題がある。   Conventionally, steel cutting work in steel building demolition work has been carried out by methods such as force cutting with a steel cutter attachment (crusher) as a heavy machine for demolition, and pulling a steel frame together with gas cutting. However, in such a cutting method, there is a possibility that the force applied by the heavy machinery is excessively applied or the direction of the force is slightly changed, leading to collapse of the steel structure building. In addition, there is a problem that two heavy machines for cutting and a heavy machine for gripping are required as heavy machines.

一方、震災などにより倒壊の危険性のある鉄骨造建物を解体する際、押し切りワイヤーソー機構（例えば、特許文献１を参照）とクラッシャーアタッチメントからなる装置を用いて切断する方法が知られている。この方法は、切断対象物である鉄骨梁を重機のアーム先端に取付けたクラッシャーアタッチメントにて保持し、ワイヤーソーを押し当てて切断するものである。この方法では、鉄骨に与える外力が比較的小さくて済むため、鉄骨造建物の倒壊のリスクを低減することができる。しかしながら、ワイヤーが鉄骨を完全に切断貫通してしまうとワイヤーを引き戻せないことから、貫通直前で切断作業を一旦止め、ワイヤーソーを引き抜いた後に、クラッシャーアタッチメントにて残りの部分をねじ切る必要があり、作業手間を要していた。また、ねじ切る際に、躯体鉄骨側に外力が若干かかってしまうなどの問題があった。   On the other hand, when dismantling a steel structure building that is at risk of collapse due to an earthquake disaster or the like, a method of cutting using a device composed of a push-off wire saw mechanism (see, for example, Patent Document 1) and a crusher attachment is known. . In this method, a steel beam, which is an object to be cut, is held by a crusher attachment attached to an arm tip of a heavy machine, and is cut by pressing a wire saw. In this method, since the external force applied to the steel frame is relatively small, the risk of collapse of the steel structure building can be reduced. However, if the wire completely cuts through the steel frame, the wire cannot be pulled back. Therefore, it is necessary to stop the cutting operation just before the penetration, pull out the wire saw, and then thread the remaining part with a crusher attachment. There was a lot of work. In addition, there is a problem that an external force is slightly applied to the steel frame side when threading.

特開２０１３−２０３４号公報JP 2013-2034 A

このため、切断貫通後にワイヤーソーを引き戻さずに済み、クラッシャーアタッチメントにて残りの部分をねじ切る必要がないような作業能率を高めた装置の開発が求められていた。   For this reason, there has been a demand for the development of an apparatus that has improved work efficiency so that it is not necessary to pull back the wire saw after the cutting penetration, and it is not necessary to thread the remaining part with a crusher attachment.

本発明は、上記に鑑みてなされたものであって、作業能率を高めることができる切断把持装置および切断把持方法を提供することを目的とする。   The present invention has been made in view of the above, and an object of the present invention is to provide a cutting and gripping device and a cutting and gripping method capable of improving work efficiency.

上記した課題を解決し、目的を達成するために、本発明に係る切断把持装置は、略棒状の切断対象物を把持する把持手段と、前記切断対象物を切断する切断手段とを備え、前記切断対象物を把持した状態で切断する切断把持装置であって、前記把持手段は、前記切断対象物の延在方向に略直交する方向から前記切断対象物を把持するものであり、前記切断手段は、前記把持手段から前記延在方向に所定の間隔を隔てた前記把持手段の両側に配置され、前記把持手段で前記切断対象物を把持した状態で、前記把持手段の両側の前記切断手段で前記切断対象物の両側を同時に切断することを特徴とする。   In order to solve the above-described problems and achieve the object, a cutting and gripping device according to the present invention includes gripping means for gripping a substantially rod-shaped cutting object, and cutting means for cutting the cutting object, A cutting and gripping device for cutting in a state in which a cutting target is gripped, wherein the gripping means grips the cutting target from a direction substantially perpendicular to the extending direction of the cutting target, and the cutting means Are arranged on both sides of the gripping means spaced apart from the gripping means in the extending direction by the cutting means on both sides of the gripping means in a state where the cutting object is gripped by the gripping means. The both sides of the cutting object are cut simultaneously.

また、本発明に係る他の切断把持装置は、上述した発明において、前記把持手段と前記切断手段との間を連結して前記延在方向に伸縮自在な連結手段をさらに備え、前記連結手段の伸縮により前記把持手段と前記切断手段との間隔を調整可能としたことを特徴とする。   Further, another cutting and gripping device according to the present invention may further include a connecting means that connects the gripping means and the cutting means and can be expanded and contracted in the extending direction. The distance between the gripping means and the cutting means can be adjusted by expansion and contraction.

また、本発明に係る他の切断把持装置は、上述した発明において、前記切断手段は、前記切断対象物にワイヤーソーを押し当てて切断する押し切りワイヤーソー機構からなることを特徴とする。   Another cutting and gripping device according to the present invention is characterized in that, in the above-described invention, the cutting means comprises a press-cut wire saw mechanism that presses and cuts a wire saw against the cutting object.

また、本発明に係る他の切断把持装置は、上述した発明において、前記切断対象物の表面に対する前記ワイヤーソーの位置ずれを防止するためのずれ止め手段をさらに備えることを特徴とする。   Another cutting and gripping device according to the present invention is characterized in that in the above-described invention, the cutting and gripping device further includes a displacement preventing means for preventing a positional displacement of the wire saw with respect to a surface of the cutting object.

また、本発明に係る切断把持方法は、上述した切断把持装置を用いて前記切断対象物を切断する切断把持方法であって、前記切断対象物を前記把持手段で把持する把持工程と、前記切断対象物の両側を前記切断手段で切断する切断工程とを備えることを特徴とする。   The cutting and gripping method according to the present invention is a cutting and gripping method of cutting the cutting object using the above-described cutting and gripping device, the gripping step of gripping the cutting object by the gripping means, and the cutting And a cutting step of cutting both sides of the object with the cutting means.

また、本発明に係る他の切断把持方法は、上述した発明において、切断工程において、前記切断手段は切断の進捗に応じて次第に前記把持手段に近づく斜め方向に前記切断対象物を切断することを特徴とする。   Further, in another cutting and gripping method according to the present invention, in the above-described invention, in the cutting step, the cutting means cuts the cutting object in an oblique direction gradually approaching the gripping means according to the progress of cutting. Features.

本発明に係る切断把持装置によれば、略棒状の切断対象物を把持する把持手段と、前記切断対象物を切断する切断手段とを備え、前記切断対象物を把持した状態で切断する切断把持装置であって、前記把持手段は、前記切断対象物の延在方向に略直交する方向から前記切断対象物を把持するものであり、前記切断手段は、前記把持手段から前記延在方向に所定の間隔を隔てた前記把持手段の両側に配置され、前記把持手段で前記切断対象物を把持した状態で、前記把持手段の両側の前記切断手段で前記切断対象物の両側を同時に切断するので、一台の重機で切断対象物の把持、切断、撤去が可能であり、切り出しに要する作業時間が短くなる。このため、建物解体作業における鉄骨梁や鉄骨柱などの切断対象物の切り出しが従来の方法に比べて容易になり、作業能率を高めることができるという効果を奏する。また、従来のように切断残り部分がないことから、クラッシャー等にてねじ切る作業が不要となり、解体中の躯体側に外力がかからず、倒壊のおそれを少なくすることができる。   According to the cutting and gripping apparatus according to the present invention, the cutting and gripping device includes a gripping unit that grips a substantially rod-shaped cutting target and a cutting unit that cuts the cutting target, and performs cutting while holding the cutting target. The apparatus is an apparatus, wherein the gripping means grips the cutting object from a direction substantially orthogonal to the extending direction of the cutting object, and the cutting means is predetermined in the extending direction from the gripping means. Since both the sides of the cutting object are simultaneously cut by the cutting means on both sides of the gripping means in a state where the cutting object is gripped by the gripping means, both sides of the gripping means are spaced apart from each other. The object to be cut can be grasped, cut and removed with a single heavy machine, and the work time required for cutting is shortened. For this reason, it becomes easier to cut out cutting objects such as steel beams and steel columns in the building demolition work as compared with the conventional method, and the work efficiency can be improved. Further, since there is no uncut portion as in the prior art, it is not necessary to perform screwing with a crusher or the like, and no external force is applied to the housing side during dismantling, and the risk of collapse can be reduced.

また、本発明に係る他の切断把持装置によれば、前記把持手段と前記切断手段との間を連結して前記延在方向に伸縮自在な連結手段をさらに備え、前記連結手段の伸縮により前記把持手段と前記切断手段との間隔を調整可能としたので、切断対象物の切り出し長さを必要に応じて容易に変更することができるという効果を奏する。また、切断対象物を把持した後でも切断位置を微調整することが可能である。   Further, according to another cutting and gripping apparatus according to the present invention, the cutting and gripping device further includes connecting means that connects the gripping means and the cutting means and is extendable and contractible in the extending direction. Since the interval between the gripping means and the cutting means can be adjusted, there is an effect that the cutting length of the object to be cut can be easily changed as necessary. Further, the cutting position can be finely adjusted even after the cutting object is gripped.

また、本発明に係る他の切断把持装置によれば、前記切断手段は、前記切断対象物にワイヤーソーを押し当てて切断する押し切りワイヤーソー機構からなるので、従来の方法のように切断貫通直前にワイヤーソーを引き戻す必要はなく、切断後の切断対象物の撤去の際にもワイヤーソーが切断対象物等に引っ掛かるおそれを未然に防止することができるという効果を奏する。   Further, according to another cutting and gripping apparatus according to the present invention, the cutting means is composed of a push-cut wire saw mechanism that presses and cuts a wire saw against the object to be cut. There is no need to pull back the wire saw, and there is an effect that it is possible to prevent the wire saw from being caught by the cutting object or the like even when the cutting object after cutting is removed.

また、本発明に係る他の切断把持装置によれば、前記切断対象物の表面に対する前記ワイヤーソーの位置ずれを防止するためのずれ止め手段をさらに備えるので、切断対象物の表面に対し角度を持たせて斜めに切断する際などに、ワイヤーソーが切断対象物の表面から位置ずれを起こしてワイヤーソーが切り込み位置に食い込み難くなるのを未然に防止することができるという効果を奏する。   Further, according to another cutting and gripping device according to the present invention, since the wire saw is further provided with a detent means for preventing displacement of the wire saw with respect to the surface of the cutting object, the angle with respect to the surface of the cutting object is set. When the cutting is performed obliquely, the wire saw can be prevented from being displaced from the surface of the object to be cut and the wire saw from becoming difficult to bite into the cutting position.

また、本発明に係る切断把持方法によれば、上述した切断把持装置を用いて前記切断対象物を切断する切断把持方法であって、前記切断対象物を前記把持手段で把持する把持工程と、前記切断対象物の両側を前記切断手段で切断する切断工程とを備えるので、建物解体における切断作業の作業能率を高めることができるという効果を奏する。   Further, according to the cutting and gripping method according to the present invention, a cutting and gripping method for cutting the cutting object using the above-described cutting and gripping device, the gripping step for gripping the cutting object with the gripping means, A cutting step of cutting both sides of the object to be cut by the cutting means, thereby producing an effect of improving the work efficiency of the cutting work in the building demolition.

また、本発明に係る他の切断把持方法によれば、切断工程において、前記切断手段は切断の進捗に応じて次第に前記把持手段に近づく斜め方向に前記切断対象物を切断するので、切断後の切断対象物の切り出し撤去を容易にすることができるという効果を奏する。また、切断方向を、下に行くに従い把持手段に近づく斜め方向とした場合には、切り出した切断対象物の重量は切断面を介して切断対象物に支持されるので、切断後の切断対象物の落下を未然に防止することができる。   According to another cutting and gripping method according to the present invention, in the cutting step, the cutting means cuts the cutting object in an oblique direction gradually approaching the gripping means according to the progress of cutting. There is an effect that the cutting object can be easily cut out and removed. In addition, when the cutting direction is an oblique direction that approaches the gripping means as it goes downward, the weight of the cut object to be cut is supported by the cut object through the cutting surface, so the cut object after cutting Can be prevented in advance.

図１は、本発明に係る切断把持装置および切断把持方法の実施の形態を示す概略側面図である。FIG. 1 is a schematic side view showing an embodiment of a cutting and gripping device and a cutting and gripping method according to the present invention. 図２は、本発明に係る切断把持装置に備わる切断手段の正面図である。FIG. 2 is a front view of the cutting means provided in the cutting and gripping apparatus according to the present invention. 図３は、本発明に係る切断把持装置に備わる切断手段の側面図である。FIG. 3 is a side view of the cutting means provided in the cutting and gripping apparatus according to the present invention. 図４は、切断対象物の表面におけるワイヤーソーの位置ずれ現象を説明する図である。FIG. 4 is a diagram for explaining the phenomenon of positional deviation of the wire saw on the surface of the object to be cut. 図５は、本発明に係る切断把持装置におけるずれ止め手段の作用を説明する図である。FIG. 5 is a diagram for explaining the operation of the deviation preventing means in the cutting and gripping apparatus according to the present invention.

以下に、本発明に係る切断把持装置および切断把持方法の実施の形態を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。   Hereinafter, embodiments of a cutting and gripping apparatus and a cutting and gripping method according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

［切断把持装置］
まず、本発明に係る切断把持装置について説明する。
図１に示すように、本発明に係る切断把持装置１０は、略棒状の鉄骨梁１（切断対象物）を把持する把持手段１２と、鉄骨梁１を切断する切断手段１４とを備え、鉄骨梁１を把持した状態で切断するものである。 [Cutting device]
First, the cutting and gripping device according to the present invention will be described.
As shown in FIG. 1, a cutting and gripping device 10 according to the present invention includes a gripping means 12 for gripping a substantially rod-shaped steel beam 1 (an object to be cut), and a cutting means 14 for cutting the steel beam 1. The beam 1 is cut while being held.

把持手段１２は、鉄骨梁１の延在方向Ｘに略直交する方向Ｙから鉄骨梁１を把持するハサミ状のものであり、図示しない重機のアーム１６の先端に取付けられる。把持手段１２の把持操作は、重機の操縦席などから遠隔操作可能となっている。この把持手段１２としては、例えば従来のクラッシャーアタッチメントを用いて構成することができる。   The gripping means 12 has a scissors shape for gripping the steel beam 1 from a direction Y substantially perpendicular to the extending direction X of the steel beam 1 and is attached to the tip of an arm 16 of a heavy machine (not shown). The gripping operation of the gripping means 12 can be remotely operated from a cockpit of a heavy machine. The gripping means 12 can be configured using, for example, a conventional crusher attachment.

切断手段１４は、鉄骨梁１にワイヤーソー２２を押し当てて切断する押し切りワイヤーソー機構からなり、把持手段１２から延在方向Ｘに所定の間隔（例えば１ｍ）を隔てた把持手段１２の両側に２つ配置される。本発明は、把持手段１２で鉄骨梁１を把持した状態で、把持手段１２の両側の切断手段１４で鉄骨梁１の両側を同時に切断することが特徴の一つである。両側を同時に切断しても、切断後の鉄骨梁１は把持手段１２で把持されているので落下しない。２つの切断手段１４によって切断対象物である鉄骨梁１の延在方向の２か所を同時に切断することで、切断貫通後のワイヤーソー２２を引き戻す必要はなくなる。なお、切断手段１４の切断操作は、重機の操縦席などから遠隔操作可能となっている。   The cutting means 14 comprises a push-cut wire saw mechanism that presses and cuts the wire saw 22 against the steel beam 1 and is provided on both sides of the gripping means 12 spaced from the gripping means 12 in the extending direction X by a predetermined interval (for example, 1 m). Two are arranged. One feature of the present invention is that while the steel beam 1 is gripped by the gripping means 12, both sides of the steel beam 1 are simultaneously cut by the cutting means 14 on both sides of the gripping means 12. Even if both sides are cut at the same time, the steel beam 1 after being cut is not dropped because it is held by the holding means 12. By simultaneously cutting two places in the extending direction of the steel beam 1 that is the object to be cut by the two cutting means 14, there is no need to pull back the wire saw 22 after the cutting penetration. Note that the cutting operation of the cutting means 14 can be performed remotely from a cockpit of a heavy machine.

把持手段１２と切断手段１４との間は、延在方向Ｘに伸縮自在な連結手段１８によって連結される。この連結手段１８の伸縮により把持手段１２と切断手段１４との間の間隔は遠隔操作等により調整可能となっており、ワイヤーソー２２を切断面と略直交方向に移動可能である。なお、連結手段１８と切断手段１４はＬ字状断面の中間部材２０を介して接続される。連結手段１８により、鉄骨梁１の切り出し長さを必要に応じて容易に変更することができる。また、鉄骨梁１を把持手段１２で把持した後でも切断位置を微調整することが可能である。また、切断後の鉄骨梁１の撤去の際、ワイヤーソー２２の引っ掛かりを防止することができる。   The gripping means 12 and the cutting means 14 are connected by a connecting means 18 that can expand and contract in the extending direction X. The distance between the gripping means 12 and the cutting means 14 can be adjusted by remote control or the like by the expansion and contraction of the connecting means 18, and the wire saw 22 can be moved in a direction substantially orthogonal to the cutting surface. The connecting means 18 and the cutting means 14 are connected via an intermediate member 20 having an L-shaped cross section. The connecting means 18 can easily change the cut-out length of the steel beam 1 as necessary. Further, the cutting position can be finely adjusted even after the steel beam 1 is gripped by the gripping means 12. Moreover, the wire saw 22 can be prevented from being caught when the steel beam 1 is removed after cutting.

次に、切断手段１４の構成および作用について説明する。
図２および図３は、それぞれ切断手段１４の正面図および側面図である。これらの図に示すように、切断手段１４は、門型架台２４と、縦方向に延びる左右２本のポールベース２６とからなる。ポールベース２６の上部外側には筒状のスライダー２８が縦方向に相対移動可能に固定されている。左右のスライダー２８どうしは連結部材２９で連結されている。 Next, the configuration and operation of the cutting means 14 will be described.
2 and 3 are a front view and a side view of the cutting means 14, respectively. As shown in these drawings, the cutting means 14 includes a portal frame 24 and two left and right pole bases 26 extending in the vertical direction. A cylindrical slider 28 is fixed to the outer side of the pole base 26 so as to be relatively movable in the vertical direction. The left and right sliders 28 are connected by a connecting member 29.

図示しない駆動手段でスライダー２８をポールベース２６に沿って縦方向に移動させることにより、門型架台２４を縦方向に相対的に移動させることが可能である。例えば、門型架台２４を鉄骨梁１に近づける向きに移動させることでワイヤーソー２２を鉄骨梁１に押し当てることができる。逆に、門型架台２４を鉄骨梁１から遠ざける向きに移動させることでワイヤーソー２２を鉄骨梁１から引き戻すことができる。   By moving the slider 28 in the vertical direction along the pole base 26 by a driving means (not shown), it is possible to relatively move the portal frame 24 in the vertical direction. For example, the wire saw 22 can be pressed against the steel beam 1 by moving the portal frame 24 so as to approach the steel beam 1. Conversely, the wire saw 22 can be pulled back from the steel beam 1 by moving the portal frame 24 in a direction away from the steel beam 1.

門型架台２４は、縦方向に延びる左右２本の縦部材３０と、縦部材３０どうしを横方向に上側で連結する上側部材３２と、下側で連結する下側部材３４とからなる。上側部材３２の上方には一対のメインプーリー３６が、下側部材３４には一対のサブプーリー３８がそれぞれ左右対称の位置に設けられる。縦部材３０の下方には一対のサブプーリー４０、４２がそれぞれ左右対称の位置に設けられる。   The gate-type gantry 24 includes two left and right vertical members 30 that extend in the vertical direction, an upper member 32 that connects the vertical members 30 in the horizontal direction on the upper side, and a lower member 34 that connects the lower side. A pair of main pulleys 36 is provided above the upper member 32, and a pair of sub pulleys 38 are provided at the left and right symmetrical positions on the lower member 34. Below the vertical member 30, a pair of sub-pulleys 40, 42 are provided at symmetrical positions.

ワイヤーソー２２は、左右一対のメインプーリー３６、サブプーリー３８、４０、４２間に架け渡されており、メインプーリー３６の背後に設けたメインモーター４４の回転駆動によって回動するようになっている。回動するワイヤーソー２２を鉄骨梁１に押し当てることで鉄骨梁１を切断可能である。   The wire saw 22 is spanned between a pair of left and right main pulleys 36 and sub-pulleys 38, 40, and 42, and is rotated by a rotational drive of a main motor 44 provided behind the main pulley 36. . The steel beam 1 can be cut by pressing the rotating wire saw 22 against the steel beam 1.

ここで、図２に示すように、この切断手段１４には、鉄骨梁１の表面に対するワイヤーソー２２の位置ずれを防止するためのずれ止め手段４６が設けられている。なお、図１および図３においては、ずれ止め手段４６の図示を省略している。   Here, as shown in FIG. 2, the cutting means 14 is provided with a slip prevention means 46 for preventing the positional deviation of the wire saw 22 with respect to the surface of the steel beam 1. 1 and 3, the illustration of the slip prevention means 46 is omitted.

このずれ止め手段４６は、内部に弾性ばね４８を装填した２〜３つの縦型の筒状部材５０と、各筒状部材５０の下端からその内部の弾性ばね４８の下端に接続し、筒状部材５０の内部から出没して自身の縦方向の長さを伸縮自在な伸縮部材５２と、伸縮部材５２の下端に横方向に取付けられた略Ｌ字状断面の１本のずれ止め部材５４とからなる。なお、筒状部材５０の上端は上側部材３２に固定されており、弾性ばね４８は伸縮部材５２を下方に押す側に付勢している。   This slip prevention means 46 is connected to two to three vertical cylindrical members 50 loaded with elastic springs 48 inside, and from the lower ends of the respective cylindrical members 50 to the lower ends of the elastic springs 48 inside thereof. A telescopic member 52 that protrudes and retracts from the inside of the member 50 and can expand and contract its longitudinal length; and one slip-preventing member 54 having a substantially L-shaped cross section attached to the lower end of the telescopic member 52 in the lateral direction; Consists of. The upper end of the cylindrical member 50 is fixed to the upper member 32, and the elastic spring 48 biases the elastic member 52 to the side that pushes it downward.

このずれ止め手段４６の動作および作用について説明する。
図４（１）に示すように、ずれ止め手段４６がない構成において、鉄骨梁１を斜め方向Ｚに切断するためにワイヤーソー２２を方向Ｚに押し当てた場合、図４（２）に示すように、ワイヤーソー２２が鉄骨梁１の表面に食い込まず、表面に沿ってずれ動いてしまうおそれがある。この場合、所望の切断位置から鉄骨梁１を切断することはできない。 The operation and action of the deviation preventing means 46 will be described.
When the wire saw 22 is pressed in the direction Z in order to cut the steel beam 1 in the oblique direction Z in the configuration without the slip prevention means 46 as shown in FIG. As described above, the wire saw 22 does not bite into the surface of the steel beam 1 and may move along the surface. In this case, the steel beam 1 cannot be cut from a desired cutting position.

そこで、図５に示すように、伸縮部材５２の下端に配置したずれ止め部材５４のガイド作用により、ワイヤーソー２２のずれ止めを行う。ずれ止め部材５４は、伸縮部材５２を介して図示しない弾性ばね４８により下方向に押し付け付勢されているため、ワイヤーソー２２を鉄骨梁１に押し当てると、ずれ止め部材５４は鉄骨梁１の表面に押し当てられる。この状態で切断作業を行うと、ワイヤーソー２２は、ずれ止め部材５４に向かう動きが抑えられて、ずれ動かなくなる。したがって、ワイヤーソー２２を鉄骨梁１に対して所望の方向（例えば斜め方向Ｚ）に食い込ませることが容易となる。   Therefore, as shown in FIG. 5, the wire saw 22 is prevented from being displaced by the guide action of the displacement preventing member 54 disposed at the lower end of the elastic member 52. Since the slip prevention member 54 is pressed and urged downward by an elastic spring 48 (not shown) via the elastic member 52, when the wire saw 22 is pressed against the steel beam 1, the slip prevention member 54 is attached to the steel beam 1. Pressed against the surface. When the cutting operation is performed in this state, the movement of the wire saw 22 toward the slip prevention member 54 is suppressed, and the wire saw 22 does not move. Therefore, it becomes easy to bite the wire saw 22 in a desired direction (for example, the oblique direction Z) with respect to the steel beam 1.

このため、鉄骨梁１の表面に対し角度を持たせて斜めに切断する際などに、ワイヤーソー２２が鉄骨梁１の表面から位置ずれを起こしてワイヤーソー２２が切り込み位置に食い込み難くなるのを未然に防止することができる。   For this reason, when making an angle with respect to the surface of the steel beam 1 and cutting obliquely, the wire saw 22 is displaced from the surface of the steel beam 1 and the wire saw 22 is less likely to bite into the cutting position. It can be prevented in advance.

また、上記のように構成した本発明の切断把持装置１０によれば、把持手段１２で鉄骨梁１を把持した状態で、把持手段１２の両側の切断手段１４で鉄骨梁１の両側を同時に切断するので、一台の重機で鉄骨梁１の把持、切断、撤去が可能であり、切り出しに要する作業時間が短くなる。このため、建物解体作業における鉄骨梁１の切り出しが従来の方法に比べて容易になり、作業能率を高めることができる。また、従来のように切断残り部分がないことから、クラッシャー等にてねじ切る作業が不要となり、解体中の躯体側に外力がかからず、倒壊のおそれを少なくすることができる。また、作業員が近づかずに作業可能である。さらに、切断貫通後のワイヤーソー２２の引っ掛かり等の不具合をなくすことができる。   Further, according to the cutting and gripping device 10 of the present invention configured as described above, both sides of the steel beam 1 are simultaneously cut by the cutting means 14 on both sides of the gripping means 12 while the steel beam 1 is gripped by the gripping means 12. Therefore, the steel beam 1 can be grasped, cut and removed with a single heavy machine, and the work time required for cutting is shortened. For this reason, the cutting of the steel beam 1 in the building demolition work becomes easier than in the conventional method, and the work efficiency can be increased. Further, since there is no uncut portion as in the prior art, it is not necessary to perform screwing with a crusher or the like, and no external force is applied to the housing side during dismantling, and the risk of collapse can be reduced. Moreover, it is possible to work without an operator approaching. Furthermore, problems such as catching of the wire saw 22 after cutting and penetration can be eliminated.

［切断把持方法］
次に、本発明に係る切断把持方法について説明する。
図１に示すように、本発明に係る切断把持方法は、上述した切断把持装置１０を用いて鉄骨梁１を切断する切断把持方法であって、鉄骨梁１を把持手段１２で把持する把持工程Ｓ１と、鉄骨梁１の両側を切断手段１４で切断する切断工程Ｓ２とを備える。これにより、建物解体における切断作業の作業能率を高めることができる。 [Cutting and gripping method]
Next, the cutting and gripping method according to the present invention will be described.
As shown in FIG. 1, the cutting and gripping method according to the present invention is a cutting and gripping method of cutting a steel beam 1 using the above-described cutting and gripping device 10, and a gripping step of gripping the steel beam 1 by a gripping means 12. S1 and cutting process S2 which cuts both sides of steel beam 1 with cutting means 14 are provided. Thereby, the work efficiency of the cutting work in a building demolition can be improved.

ここで、上記の切断工程Ｓ２において、切断手段１４は、切断の進捗に応じて次第に把持手段１２に近づく斜め方向Ｚに鉄骨梁１を切断することができる。このようにすれば、鉄骨梁１の両側の切断面の形状は側面視で逆ハの字状となる。把持手段１２で上方に引き上げ易くなるので、切断後の鉄骨梁１の切り出し撤去を容易にすることができる。   Here, in said cutting process S2, the cutting means 14 can cut | disconnect the steel beam 1 in the diagonal direction Z which approaches the holding means 12 gradually according to the progress of cutting. If it does in this way, the shape of the cut surface of the both sides of the steel beam 1 will become a reverse letter C shape by side view. Since it becomes easy to pull upward by the holding means 12, it is possible to easily cut out and remove the steel beam 1 after cutting.

なお、この場合、切り出した鉄骨梁１が仮に把持手段１２から外れて脱落したとしても、切り出した鉄骨梁１の重量は切断面を介して躯体側に残った鉄骨梁１に支持されることから、切り出した鉄骨梁１の落下を未然に防止することができる。   In this case, even if the cut-out steel beam 1 is detached from the gripping means 12 and dropped, the weight of the cut-out steel beam 1 is supported by the steel beam 1 remaining on the housing side through the cut surface. The fall of the cut steel beam 1 can be prevented in advance.

また、図１は側面から見た図であるが、これを上方から見た図として読み替えてもよい。この場合、切り出した鉄骨梁１を把持手段１２で側方（図１の上方）に引き抜き易くなるので、切断後の鉄骨梁１の切り出し撤去を容易にすることができる。   Moreover, although FIG. 1 is the figure seen from the side, you may read this as a figure seen from upper direction. In this case, since the cut steel beam 1 can be easily pulled out to the side (upper side in FIG. 1) by the gripping means 12, it is possible to easily cut out and remove the steel beam 1 after cutting.

上記の実施の形態において、切断対象物として鉄骨梁を例にとり説明したが、本発明はこれに限るものではなく、切断対象物は鉄骨柱でもよいし、ブレース等の斜材であってもよい。また、切断対象物の材質は鉄骨に限るものではなく、コンクリート、鉄筋コンクリート、鉄骨鉄筋コンクリート、木質材料などであってもよい。   In the above embodiment, the steel beam has been described as an example of the cutting object. However, the present invention is not limited to this, and the cutting object may be a steel column or an oblique material such as a brace. . The material of the object to be cut is not limited to steel, but may be concrete, reinforced concrete, steel reinforced concrete, woody material, or the like.

以上説明したように、本発明に係る切断把持装置によれば、略棒状の切断対象物を把持する把持手段と、前記切断対象物を切断する切断手段とを備え、前記切断対象物を把持した状態で切断する切断把持装置であって、前記把持手段は、前記切断対象物の延在方向に略直交する方向から前記切断対象物を把持するものであり、前記切断手段は、前記把持手段から前記延在方向に所定の間隔を隔てた前記把持手段の両側に配置され、前記把持手段で前記切断対象物を把持した状態で、前記把持手段の両側の前記切断手段で前記切断対象物の両側を同時に切断するので、一台の重機で切断対象物の把持、切断、撤去が可能であり、切り出しに要する作業時間が短くなる。このため、建物解体作業における鉄骨梁や鉄骨柱などの切断対象物の切り出しが従来の方法に比べて容易になり、作業能率を高めることができる。また、従来のように切断残り部分がないことから、クラッシャー等にてねじ切る作業が不要となり、解体中の躯体側に外力がかからず、倒壊のおそれを少なくすることができる。   As described above, the cutting and gripping device according to the present invention includes a gripping means for gripping a substantially rod-shaped cutting object and a cutting means for cutting the cutting object, and grips the cutting object. A cutting and gripping device for cutting in a state, wherein the gripping means grips the cutting object from a direction substantially orthogonal to the extending direction of the cutting object, and the cutting means is separated from the gripping means. It is arranged on both sides of the gripping means with a predetermined interval in the extending direction, and the cutting object on both sides of the gripping means is held on both sides of the cutting object in a state where the cutting object is gripped by the gripping means. Are simultaneously cut, it is possible to grip, cut and remove the object to be cut with a single heavy machine, and the work time required for cutting is shortened. For this reason, it becomes easier to cut out a cutting object such as a steel beam or a steel column in the building demolition work as compared with the conventional method, and the work efficiency can be improved. Further, since there is no uncut portion as in the prior art, it is not necessary to perform screwing with a crusher or the like, and no external force is applied to the housing side during dismantling, and the risk of collapse can be reduced.

また、本発明に係る他の切断把持装置によれば、前記把持手段と前記切断手段との間を連結して前記延在方向に伸縮自在な連結手段をさらに備え、前記連結手段の伸縮により前記把持手段と前記切断手段との間隔を調整可能としたので、切断対象物の切り出し長さを必要に応じて容易に変更することができる。また、切断対象物を把持した後でも切断位置を微調整することが可能である。   Further, according to another cutting and gripping apparatus according to the present invention, the cutting and gripping device further includes connecting means that connects the gripping means and the cutting means and is extendable and contractible in the extending direction. Since the interval between the gripping means and the cutting means can be adjusted, the cutting length of the cutting object can be easily changed as necessary. Further, the cutting position can be finely adjusted even after the cutting object is gripped.

また、本発明に係る他の切断把持装置によれば、前記切断手段は、前記切断対象物にワイヤーソーを押し当てて切断する押し切りワイヤーソー機構からなるので、従来の方法のように切断貫通直前にワイヤーソーを引き戻す必要はなく、切断後の切断対象物の撤去の際にもワイヤーソーが切断対象物等に引っ掛かるおそれを未然に防止することができる。   Further, according to another cutting and gripping apparatus according to the present invention, the cutting means is composed of a push-cut wire saw mechanism that presses and cuts a wire saw against the object to be cut. There is no need to pull back the wire saw, and it is possible to prevent the wire saw from being caught on the cutting object or the like even when the cutting object after cutting is removed.

また、本発明に係る他の切断把持装置によれば、前記切断対象物の表面に対する前記ワイヤーソーの位置ずれを防止するためのずれ止め手段をさらに備えるので、切断対象物の表面に対し角度を持たせて斜めに切断する際などに、ワイヤーソーが切断対象物の表面から位置ずれを起こしてワイヤーソーが切り込み位置に食い込み難くなるのを未然に防止することができる。   Further, according to another cutting and gripping device according to the present invention, since the wire saw is further provided with a detent means for preventing displacement of the wire saw with respect to the surface of the cutting object, the angle with respect to the surface of the cutting object is set. It is possible to prevent the wire saw from being displaced from the surface of the object to be cut and becoming difficult to bite into the cut position when it is cut obliquely by holding it.

また、本発明に係る切断把持方法によれば、上述した切断把持装置を用いて前記切断対象物を切断する切断把持方法であって、前記切断対象物を前記把持手段で把持する把持工程と、前記切断対象物の両側を前記切断手段で切断する切断工程とを備えるので、建物解体における切断作業の作業能率を高めることができる。   Further, according to the cutting and gripping method according to the present invention, a cutting and gripping method for cutting the cutting object using the above-described cutting and gripping device, the gripping step for gripping the cutting object with the gripping means, A cutting step of cutting both sides of the object to be cut by the cutting means, so that the work efficiency of the cutting work in building demolition can be improved.

また、本発明に係る他の切断把持方法によれば、切断工程において、前記切断手段は切断の進捗に応じて次第に前記把持手段に近づく斜め方向に前記切断対象物を切断するので、切断後の切断対象物の切り出し撤去を容易にすることができる。また、切断方向を、下に行くに従い把持手段に近づく斜め方向とした場合には、切り出した切断対象物の重量は切断面を介して切断対象物に支持されるので、切断後の切断対象物の落下を未然に防止することができる。   Further, according to another cutting and gripping method according to the present invention, in the cutting step, the cutting means cuts the cutting object in an oblique direction gradually approaching the gripping means in accordance with the progress of cutting. The cutting object can be easily cut out and removed. In addition, when the cutting direction is an oblique direction that approaches the gripping means as it goes downward, the weight of the cut object to be cut is supported by the cut object through the cutting surface, so the cut object after cutting Can be prevented in advance.

以上のように、本発明に係る切断把持装置および切断把持方法は、例えば建物解体作業において鉄骨などの部材を切り出すのに有用であり、特に、切断作業の作業能率を高めるのに適している。   As described above, the cutting and gripping device and the cutting and gripping method according to the present invention are useful for cutting out members such as steel frames in, for example, building demolition work, and are particularly suitable for increasing the work efficiency of cutting work.

１ 鉄骨梁（切断対象物）
１０ 切断把持装置
１２ 把持手段
１４ 切断手段
１６ アーム
１８ 連結手段
２０ 中間部材
２２ ワイヤーソー
２４ 門型架台
２６ ポールベース
２８ スライダー
２９ 連結部材
３０ 縦部材
３２ 上側部材
３４ 下側部材
３６ メインプーリー
３８，４０，４２ サブプーリー
４４ メインモーター
４６ ずれ止め手段
４８ 弾性ばね
５０ 筒状部材
５２ 伸縮部材
５４ ずれ止め部材 1 Steel beam (object to be cut)
DESCRIPTION OF SYMBOLS 10 Cutting | grip holding device 12 Gripping means 14 Cutting means 16 Arm 18 Connecting means 20 Intermediate member 22 Wire saw 24 Portal frame 26 Pole base 28 Slider 29 Connecting member 30 Vertical member 32 Upper member 34 Lower member 36 Main pulleys 38, 40, 42 Sub-pulley 44 Main motor 46 Displacement prevention means 48 Elastic spring 50 Cylindrical member 52 Stretchable member 54 Displacement prevention member

Claims (6)

略棒状の切断対象物を把持する把持手段と、前記切断対象物を切断する切断手段とを備え、前記切断対象物を把持した状態で切断する切断把持装置であって、
前記把持手段は、前記切断対象物の延在方向に略直交する方向から前記切断対象物を把持するものであり、
前記切断手段は、前記把持手段から前記延在方向に所定の間隔を隔てた前記把持手段の両側に配置され、
前記把持手段で前記切断対象物を把持した状態で、前記把持手段の両側の前記切断手段で前記切断対象物の両側を同時に切断することを特徴とする切断把持装置。 A cutting and gripping device that includes a gripping means for gripping a substantially rod-shaped cutting object and a cutting means for cutting the cutting object, and that cuts the cutting object while gripping the cutting object.
The gripping means grips the cutting object from a direction substantially orthogonal to the extending direction of the cutting object,
The cutting means is disposed on both sides of the gripping means at a predetermined interval in the extending direction from the gripping means,
A cutting and gripping apparatus that simultaneously cuts both sides of the cutting object with the cutting means on both sides of the gripping means in a state where the cutting object is gripped by the gripping means. 前記把持手段と前記切断手段との間を連結して前記延在方向に伸縮自在な連結手段をさらに備え、前記連結手段の伸縮により前記把持手段と前記切断手段との間隔を調整可能としたことを特徴とする請求項１に記載の切断把持装置。   The apparatus further comprises a connecting means that connects the gripping means and the cutting means and can be expanded and contracted in the extending direction, and the interval between the gripping means and the cutting means can be adjusted by extending and contracting the connecting means. The cutting and gripping device according to claim 1. 前記切断手段は、前記切断対象物にワイヤーソーを押し当てて切断する押し切りワイヤーソー機構からなることを特徴とする請求項１または２に記載の切断把持装置。   The cutting and gripping device according to claim 1 or 2, wherein the cutting means includes a push-cut wire saw mechanism that presses and cuts a wire saw against the object to be cut. 前記切断対象物の表面に対する前記ワイヤーソーの位置ずれを防止するためのずれ止め手段をさらに備えることを特徴とする請求項１〜３のいずれか一つに記載の切断把持装置。   The cutting and gripping device according to any one of claims 1 to 3, further comprising a displacement preventing means for preventing a displacement of the wire saw with respect to a surface of the cutting object. 請求項１〜４のいずれか一つに記載の切断把持装置を用いて前記切断対象物を切断する切断把持方法であって、
前記切断対象物を前記把持手段で把持する把持工程と、
前記切断対象物の両側を前記切断手段で切断する切断工程とを備えることを特徴とする切断把持方法。 A cutting and gripping method of cutting the cutting object using the cutting and gripping device according to any one of claims 1 to 4,
A gripping step of gripping the cutting object with the gripping means;
And a cutting step of cutting both sides of the object to be cut by the cutting means. 切断工程において、前記切断手段は切断の進捗に応じて次第に前記把持手段に近づく斜め方向に前記切断対象物を切断することを特徴とする請求項５に記載の切断把持方法。   6. The cutting and gripping method according to claim 5, wherein, in the cutting step, the cutting means cuts the cutting object in an oblique direction that gradually approaches the gripping means in accordance with the progress of cutting.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007146571A (en) * 2005-11-30 2007-06-14 Takenaka Komuten Co Ltd Steel frame cutter
US20100186564A1 (en) * 2009-01-26 2010-07-29 Illinois Tool Works Inc. Wire Saw
JP2014069529A (en) * 2012-10-01 2014-04-21 Shimizu Corp Cutting apparatus
JP2015004238A (en) * 2013-06-21 2015-01-08 株式会社竹中工務店 Holding and cutting apparatus, and holding and cutting method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007146571A (en) * 2005-11-30 2007-06-14 Takenaka Komuten Co Ltd Steel frame cutter
US20100186564A1 (en) * 2009-01-26 2010-07-29 Illinois Tool Works Inc. Wire Saw
JP2014069529A (en) * 2012-10-01 2014-04-21 Shimizu Corp Cutting apparatus
JP2015004238A (en) * 2013-06-21 2015-01-08 株式会社竹中工務店 Holding and cutting apparatus, and holding and cutting method

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