JP2020158302A - Assembling method of steel tower, mast guide device for derrick for building demolition work, and transferring method of the mast guide device - Google Patents

Assembling method of steel tower, mast guide device for derrick for building demolition work, and transferring method of the mast guide device Download PDF

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JP2020158302A
JP2020158302A JP2019063129A JP2019063129A JP2020158302A JP 2020158302 A JP2020158302 A JP 2020158302A JP 2019063129 A JP2019063129 A JP 2019063129A JP 2019063129 A JP2019063129 A JP 2019063129A JP 2020158302 A JP2020158302 A JP 2020158302A
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mast
guide device
tower
main pillar
steel tower
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JP7245098B2 (en
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潤二 川瀬
Junji Kawase
潤二 川瀬
克哉 則竹
Katsuya Noritake
克哉 則竹
篤次 磯村
Atsuji Isomura
篤次 磯村
渡辺　慎也
Shinya Watanabe
慎也 渡辺
伯晃 川崎
Noriaki Kawasaki
伯晃 川崎
鈴木　寛之
Hiroyuki Suzuki
寛之 鈴木
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Sanwa Tekki Corp
C Tech Corp
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Sanwa Tekki Corp
C Tech Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

To provide a mast guiding device that eliminates the lifting and lowering work that workers move between a steel tower and a mast when assembling the steel tower.SOLUTION: A mast guide device 7 surrounds a mast 3 so as to be able to move up and down relative to each other, is supported by a steel tower main pillar material P by a horizontal branch line 9, and holds the mast 3 perpendicularly to a steel tower T, comprising an annular frame 14 that surrounds the mast 3 so as to be able to move up and down relative to each other, a guide roller 15 provided thereon, and a stopper 16. The guide roller 15 can roll up and down on the outside of mast main pillar materials 3a to 3d. The stopper 16 can freely restrain and release the mast main pillar materials 3a to 3d, and is urged to a restrained position by the spring 17. The horizontal branch line 9, with one end side being connected to the stopper 16, arranges the stopper 16 at a release position against the urging force of the spring 17 when the other end side is locked to the steel tower main pillar material P with a predetermined tension.SELECTED DRAWING: Figure 7

Description

本発明は、鉄塔の組立、解体工事において、資材を吊り上げ、吊り降ろすために、組立、解体途上の鉄塔の中心部に設置され、鉄塔に対するその取り付け高さ位置を変更できるデリックにおいて、マストを直立維持しつつ、その上昇、下降を案内するマストガイド装置に関する。 The present invention is installed in the center of a steel tower during assembly and dismantling in order to lift and lower materials in steel tower assembly and dismantling work, and the mast is erected in a derrick whose mounting height position with respect to the tower can be changed. It relates to a mast guide device that guides the ascent and descent while maintaining it.

鉄塔の組立、解体の工事に用いられるデリックとして、例えば特許文献１に開示されたものがある。このデリックは、組立又は解体途上の鉄塔の中心部において４つの鉄塔主柱材に支持されるマストと、マストの上端部に設けられるブームとを具備する。マストは、下端において台座を介して水平支線と斜支線で四方の鉄塔主柱材に支持され、また中間部でマストを包囲する複数のマストガイドを介して水平支線で四方の鉄塔主柱材に直立するように支持される。台座と鉄塔主柱材の上部の滑車にかけ回されたせり上げワイヤを地上のウィンチで巻き取り巻き戻しすることによって、鉄塔に対するのマストの支持位置を上下に移動することができる。マストは台座上に軸周り回転自在に支持され、モータで回転駆動される。マストガイドは、相対回転自在の内外二重の環状部材で構成され、外側環状部材が水平支線によって鉄塔の主柱材に支持される。内側環状部材は、マストの四本の主柱材を上下方向に転動自在に受ける４つの昇降ローラを具備し、マストと共に水平回転自在である。
デリックを鉄塔主柱材の内側への設置する際には、マストの下端の台座を水平支線と斜支線で鉄塔主柱材に固定すると共に、マストを包囲するマストガイドを水平支線で鉄塔主柱材に固定する。この状態で、デリックを動作させて鉄塔の組み上げ、解体作業を行う。
鉄塔の組立作業の進行にしたがって、マストをせり上げ又はせり下げる。この際には、マストの荷重をせり上げワイヤで支持した状態で、マストの下端部を支持する斜支線と水平支線を鉄塔主柱材から外した後、せり上げワイヤを巻き上げ又は巻き戻してマストを所定高さ位置まで上昇又は下降させる。その際、マストはマストガイドにより直立を維持するようにガイドされる。所定位置までマストが上昇又は下降したら、その位置でマストの台座を水平支線と斜支線で鉄塔主柱材に支持する。せり上げワイヤを掛ける鉄塔主柱材上の滑車の位置も適正位置に移動させる。マストをせり上げ又はせり下げた後、マストガイドの水平支線を鉄塔主柱材から外し、牽引装置等を用いてマストガイドをマストの所要位置まで吊り上げ又は吊り下ろし、その位置で再び水平支線で鉄塔主柱材に支持する。この際には、作業者が鉄塔側からマストガイド側へ移動して作業を行う。 As a derrick used for the construction of assembling and dismantling a steel tower, for example, there is one disclosed in Patent Document 1. The derrick comprises a mast supported by four tower main pillars at the center of the tower during assembly or disassembly, and a boom provided at the top of the mast. The mast is supported by the four-sided tower main pillars at the lower end via the pedestal via the pedestal, and is supported by the four-sided tower main pillars at the middle part via multiple mast guides surrounding the mast. Supported to stand upright. The support position of the mast with respect to the tower can be moved up and down by winding and rewinding the hoisting wire hung around the pulley on the pedestal and the main pillar of the tower with a winch on the ground. The mast is rotatably supported around the axis on the pedestal and is driven to rotate by a motor. The mast guide is composed of an inner and outer double annular member that is relatively rotatable, and the outer annular member is supported by a horizontal branch line to the main column member of the steel tower. The inner annular member includes four elevating rollers that rotatably receive the four main pillar members of the mast in the vertical direction, and can rotate horizontally together with the mast.
When installing the derrick inside the main pillar material of the mast, the pedestal at the lower end of the mast is fixed to the main pillar material of the steel tower with horizontal branch lines and diagonal branch lines, and the mast guide surrounding the mast is fixed to the main pillar material of the steel tower with horizontal branch lines. Fix to the material. In this state, the derrick is operated to assemble and dismantle the tower.
Raise or lower the mast as the tower assembly work progresses. In this case, with the load of the mast supported by the lifting wire, the diagonal branch line and horizontal branch line that support the lower end of the mast are removed from the main column material of the tower, and then the lifting wire is wound or rewound to make the mast. Is raised or lowered to a predetermined height position. At that time, the mast is guided by the mast guide to maintain the upright position. When the mast rises or falls to a predetermined position, the pedestal of the mast is supported by the main pillar material of the tower with horizontal branch lines and diagonal branch lines at that position. Move the position of the pulley on the main pillar of the tower to hang the lifting wire to the proper position. After raising or lowering the mast, remove the horizontal branch line of the mast guide from the main pillar material of the tower, lift or lower the mast guide to the required position of the mast using a traction device, etc., and then lift or lower the mast guide to the required position of the mast again, and then use the horizontal branch line again to lift or lower the mast. Supports the main pillar material. At this time, the worker moves from the tower side to the mast guide side to perform the work.

特開２０１７−１１９５７１号公報Japanese Unexamined Patent Publication No. 2017-119571

上記従来のデリックを用いた鉄塔の組立又は解体作業時には、高所において作業者が鉄塔とマストガイドとの間を頻繁に行き来する危険を伴う難作業がある。マストガイドの吊り上げ、吊り下ろし作業も手間のかかる難作業である。
したがって、本発明は、鉄塔の組立又は解体作業時に、作業者が鉄塔とマストガイドとの間を頻繁に行き来する必要がなく、吊り上げ、吊り下ろし作業を省略できるマストガイド装置と、これを用いたマストガイドの移設方法を提供することを目的としている。 When assembling or disassembling a steel tower using the above-mentioned conventional derrick, there is a difficult work with a risk that an operator frequently moves between the steel tower and the mast guide at a high place. Lifting and lowering the mast guide is also a laborious and difficult task.
Therefore, the present invention uses a mast guide device that does not require the operator to frequently move between the tower and the mast guide during the assembly or disassembly work of the tower and can omit the lifting and lowering work. The purpose is to provide a method of relocating the mast guide.

以下、添付図面の符号を参照して説明するが、本発明はこれに限定されるものではない。
上記課題を解決するための、本発明のマストガイド装置７，８は、マスト３の中間部を相対昇降自在に包囲して水平支線９，１０により鉄塔主柱材Ｐに支持され、それによりマスト３を鉄塔Ｔに対して垂直に相対昇降自在に保持するものであり、マスト３を相対昇降自在に包囲する環状フレーム１４と、この環状フレーム１４上に設けられる４つのガイドローラ１５と、４つのストッパ１６とを具備する。ガイドローラ１５は、環状フレーム１４の内側に突出し、マスト３を構成する四方のマスト主柱材３ａ〜３ｄの外側を上下方向に転動するように設けられる。ストッパ１６は、マスト主柱材３ａ〜３ｄの外側に当接する拘束位置と当該マスト主柱材３ａ〜３ｄから離れる解放位置との間を移動自在で、ばね１７により拘束位置に付勢され、拘束位置において環状フレーム１４をマスト３に固定し、解放位置において環状フレーム１４のマスト３に対する相対上下動を許容するように設けられる。水平支線９，１０は、一端側がストッパ１６に接続され、所定の張力を持って他端側が鉄塔主柱材Ｐに係止されるとき、ばね１７の付勢力に抗してストッパ１６を解放位置に配置するように設けられる。
上記課題を解決するための、本発明のマストガイド装置７，８の移設方法は、鉄塔Ｔ上の原位置において水平支線９，１０を介して支持されているマストガイド装置７，８により支持されて原位置にあるマスト３を原位置から所定の上方位置へせり上げるに先立って、当該マスト３を鉄塔に対して原位置から所定距離下方の下降位置まで下降させる第１の工程と、その後、水平支線９，１０の鉄塔主柱材Ｐへの支持を外し、マストガイド装置７，８のストッパ１６を拘束位置に配置することにより、原位置にある当該マストガイド装置７，８を下降位置にあるマスト３に固定する第２の工程と、その後、固定されたマストガイド装置７，８を伴って、下降位置にあるマスト３を原位置までせり上げることにより、当該マストガイド装置７，８を原位置から上方位置へ移動させる第３の工程と、その後、上方位置にあるマストガイド装置７，８の水平支線９，１０を緊線して鉄塔主柱材Ｐへ支持し、当該マストガイド装置７，８のストッパ１６を解放位置に配置することにより、当該マストガイド装置７，８をマスト３に対して自由にする第４の工程とを含む。 Hereinafter, the description will be made with reference to the reference numerals in the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the mast guide devices 7 and 8 of the present invention surround the intermediate portion of the mast 3 so as to be able to move up and down relative to each other and are supported by the tower main pillar members P by the horizontal branch lines 9 and 10, whereby the mast 3 is held so as to be able to move up and down relative to the steel tower T, and an annular frame 14 that surrounds the mast 3 so that it can be moved up and down relative to each other, four guide rollers 15 provided on the annular frame 14, and four. It is provided with a stopper 16. The guide roller 15 projects inside the annular frame 14 and is provided so as to roll in the vertical direction on the outside of the four mast main pillar members 3a to 3d constituting the mast 3. The stopper 16 is movable between a restraining position abutting on the outside of the mast main pillars 3a to 3d and a release position away from the mast main pillars 3a to 3d, and is urged to the restraining position by the spring 17 to be restrained. The annular frame 14 is fixed to the mast 3 at the position, and is provided so as to allow the annular frame 14 to move up and down relative to the mast 3 at the release position. When one end side of the horizontal branch lines 9 and 10 is connected to the stopper 16 and the other end side is locked to the tower main column member P with a predetermined tension, the stopper 16 is released in a position against the urging force of the spring 17. It is provided so as to be arranged in.
The method for relocating the mast guide devices 7 and 8 of the present invention for solving the above problems is supported by the mast guide devices 7 and 8 supported by the mast guide devices 7 and 8 at the in-situ position on the steel tower T via the horizontal branch lines 9 and 10. Prior to raising the mast 3 at the position from the original position to a predetermined upper position, a first step of lowering the mast 3 from the original position to a lower position a predetermined distance below the steel tower, and then a horizontal branch line. By removing the support of the steel tower main pillars P of 9 and 10 and arranging the stoppers 16 of the mast guide devices 7 and 8 in the restraint position, the mast guide devices 7 and 8 in the original position are placed in the mast in the lowered position. The mast guide devices 7 and 8 are moved to the original position by raising the mast 3 in the lowered position to the original position with the second step of fixing the mast to 3 and then the fixed mast guide devices 7 and 8. The third step of moving the mast guide device 7 and 8 from the above position to the upper position, and then the horizontal branch lines 9 and 10 of the mast guide devices 7 and 8 located at the upper position are tightly connected to support the mast guide device P and the mast guide device 7, It includes a fourth step of freeing the mast guide devices 7 and 8 with respect to the mast 3 by arranging the stopper 16 of 8 at the release position.

本発明のマストガイド装置７，８は、本発明の方法により、鉄塔Ｔ側から水平支線９，１０を操作してマスト３に対して係合離脱させることができ、これによりマスト３の昇降操作と合わせて、マスト３の所望位置にマストガイド装置７，８を配置することができる。したがって、マスト３の上方からマストガイド装置７，８を吊り上げたり吊り降ろしたりする操作を省略できる。 The mast guide devices 7 and 8 of the present invention can be disengaged from the mast 3 by operating the horizontal branch lines 9 and 10 from the tower T side by the method of the present invention, whereby the mast 3 can be raised and lowered. In combination with this, the mast guide devices 7 and 8 can be arranged at a desired position of the mast 3. Therefore, the operation of lifting and lowering the mast guide devices 7 and 8 from above the mast 3 can be omitted.

本発明に係るデリック装置の概略的説明図である。It is a schematic explanatory drawing of the derrick apparatus which concerns on this invention. 図１のデリック装置の一部の概略的説明図である。It is a schematic explanatory drawing of a part of the derrick apparatus of FIG. 図１のデリック装置におけるデリック本体の正面図である。It is a front view of the derrick main body in the derrick apparatus of FIG. 図３のデリック本体のマストとブームとの関係を示す概略的平面図である。It is a schematic plan view which shows the relationship between the mast and the boom of the derrick main body of FIG. 図１のデリック装置におけるマスト下端部の正面図である。It is a front view of the lower end part of the mast in the derrick device of FIG. 図１のデリック装置におけるマスト下端部の平面図である。It is a top view of the lower end part of the mast in the derrick apparatus of FIG. 図１のデリック装置におけるマストガイド装置の平面図である。It is a top view of the mast guide device in the derrick device of FIG. 図７のマストガイド装置の一部の正面図である。It is a front view of a part of the mast guide device of FIG. 図７のマストガイド装置の一部の断面図である。It is sectional drawing of a part of the mast guide device of FIG. デリック装置を用いた鉄塔組み立て工事の工程を示す説明図である。It is explanatory drawing which shows the process of steel tower assembly work using a derrick apparatus. デリック装置を用いた鉄塔組み立て工事の工程を示す説明図である。It is explanatory drawing which shows the process of steel tower assembly work using a derrick apparatus. デリック装置を用いた鉄塔組み立て工事の工程を示す説明図である。It is explanatory drawing which shows the process of steel tower assembly work using a derrick apparatus. デリック装置を用いた鉄塔組み立て工事の工程を示す説明図である。It is explanatory drawing which shows the process of steel tower assembly work using a derrick apparatus. デリック装置を用いた鉄塔組み立て工事の工程を示す説明図である。It is explanatory drawing which shows the process of steel tower assembly work using a derrick apparatus. デリック装置を用いた鉄塔組み立て工事の工程を示す説明図である。It is explanatory drawing which shows the process of steel tower assembly work using a derrick apparatus. デリック装置を用いた鉄塔組み立て工事の工程を示す説明図である。It is explanatory drawing which shows the process of steel tower assembly work using a derrick apparatus. デリック装置を用いた鉄塔組み立て工事の工程を示す説明図である。It is explanatory drawing which shows the process of steel tower assembly work using a derrick apparatus. 本発明の他の実施形態に係るデリック装置の概略的説明図である。It is a schematic explanatory drawing of the derrick apparatus which concerns on other embodiment of this invention.

図面を参照して本発明の実施の形態を説明する。
図１，２において、デリック装置１は、トラス柱状のマスト３と、当該マスト３の上部に起伏自在に支持されるブーム４とからなるデリック本体２を具備する。
マスト３は、組立又は解体途上の鉄塔Ｔの中心部に垂直に支持される。鉄塔Ｔは、第１ないし第４の４つの鉄塔主柱材Ｐ（Ｐ１，Ｐ２，Ｐ３，Ｐ４）（図２）を有し、第２節Ｓ２まで既に組み立てられており、第３節Ｓ３がデリック装置１を使用してこれから組み立てられる。 Embodiments of the present invention will be described with reference to the drawings.
In FIGS. 1 and 2, the derrick device 1 includes a derrick main body 2 including a truss columnar mast 3 and a boom 4 undulatingly supported on the upper part of the mast 3.
The mast 3 is supported perpendicular to the center of the tower T during assembly or disassembly. The tower T has four main pillar members P (P1, P2, P3, P4) (FIG. 2) of the first to fourth steel towers, and has already been assembled up to the second section S2, and the third section S3 It will be assembled using the derrick device 1.

図３によく示すように、マスト３は、トラス柱で構成され、４つのマスト主柱材３ａ，３ｂ，３ｃ，３ｄを具備し、上部において旋回台座１８を介してブーム４の基端を起伏自在に支持する。マスト３の旋回台座１８より上部は、図４に示すように、平面視コ字状に側方へ解放しており、この開放空間Ｓ内へ起立状態のブーム４が納まり、マスト３の横断面積が全長において統一される。したがって、ブーム４を起立させた状態で、マスト３はその全長にわたってマストガイド装置７，８を支障なく通過できる。 As is well shown in FIG. 3, the mast 3 is composed of truss columns, includes four mast main column members 3a, 3b, 3c, and 3d, and undulates the base end of the boom 4 via a swivel pedestal 18 at the upper part. Support freely. As shown in FIG. 4, the upper part of the mast 3 above the swivel pedestal 18 is released laterally in a U-shape in a plan view, and the upright boom 4 is housed in this open space S, and the cross-sectional area of the mast 3 is crossed. Is unified in the total length. Therefore, with the boom 4 upright, the mast 3 can pass through the mast guide devices 7 and 8 over its entire length without any trouble.

図１，２において、マスト３は、その下端部において水平支線５及び斜支線６により鉄塔主柱材Ｐに支持され、また中間部において、上部マストガイド装置７と下部マストガイド装置８を介して水平支線９，１０により鉄塔主柱材Ｐに支持される。マストガイド装置７，８は、マスト３を相対昇降自在に包囲する In FIGS. 1 and 2, the mast 3 is supported by the tower main column member P by the horizontal branch line 5 and the oblique branch line 6 at the lower end portion thereof, and is supported by the upper mast guide device 7 and the lower mast guide device 8 at the intermediate portion. It is supported by the main pillar material P of the tower by the horizontal branch lines 9 and 10. The mast guide devices 7 and 8 surround the mast 3 so as to be able to move up and down relative to each other.

デリック装置１を用いて作業を行うときには、上部マストガイド装置７が組立済みの鉄塔主柱材Ｐの上端部（図１において第２節の上端部）に支持され、マスト３の下端部は水平支線５と斜支線６で鉄塔Ｔに支持される。マスト３の上部は、上部マストガイド装置７から上方へ安全上規制された所定距離以内の高さ延出する配置がとられる。 When working with the derrick device 1, the upper mast guide device 7 is supported by the upper end portion of the assembled steel tower main column member P (the upper end portion of the second section in FIG. 1), and the lower end portion of the mast 3 is horizontal. It is supported by the tower T by the branch line 5 and the diagonal branch line 6. The upper portion of the mast 3 is arranged so as to extend upward from the upper mast guide device 7 to a height within a predetermined distance regulated for safety.

斜支線６は、マスト３のせり上げワイヤ６ａ，６ｂを兼ねる２本のワイヤロープからなる。せり上げワイヤ６ａ，６ｂは、一端側が地上のウィンチＷに巻かれ、中間部が鉄塔主柱材Ｐの上部のせり上げ用滑車１１に掛けられ、他端側が主柱材Ｐに係止され、マスト３を支持する。せり上げワイヤ６ａ，６ｂの巻き取り巻き戻しにより鉄塔Ｔに対するマスト３の支持位置を上下に移動することができる。 The oblique branch line 6 is composed of two wire ropes that also serve as the raising wires 6a and 6b of the mast 3. One end of the lifting wires 6a and 6b is wound around a winch W on the ground, the middle portion is hung on the lifting pulley 11 on the upper part of the tower main pillar material P, and the other end side is locked to the main pillar material P. Support mast 3. By winding and rewinding the lifting wires 6a and 6b, the support position of the mast 3 with respect to the tower T can be moved up and down.

図５，６に示すように、マスト３の下端部には台座１２が設けられる。台座１２上には、四隅にマスト滑車１３（１３ａ，１３ｂ，１３ｃ，１３ｄ）と水平支線５を係止する引き手１９が設けられる。マスト滑車１３には、せり上げワイヤ６ａ，６ｂが掛けられる。 As shown in FIGS. 5 and 6, a pedestal 12 is provided at the lower end of the mast 3. On the pedestal 12, pullers 19 for locking the mast pulleys 13 (13a, 13b, 13c, 13d) and the horizontal branch line 5 are provided at the four corners. Raising wires 6a and 6b are hung on the mast pulley 13.

図２において、せり上げワイヤ６ａは、ウィンチＷから、鉄塔主柱材Ｐ１上のせり上げ用滑車１１ａ、マスト滑車１３ａ，１３ｃを介して鉄塔主柱材Ｐ３に係止される。せり上げワイヤ６ｂは、ウィンチＷから、鉄塔主柱材Ｐ２上のせり上げ用滑車１１ｂ、マスト滑車１３ｂ，１３ｄを介して鉄塔主柱材Ｐ４に係止される。負荷を軽減するために、図１に示すように鉄塔主柱材Ｐ３，Ｐ４上にもせり上げ用滑車１１ｃ，１１ｄを設け、それぞれせり上げワイヤ６ａ，６ｂを掛けて折り返し、マスト滑車１３を介してせり上げ用滑車１１ａ，１１ｂの係止位置付近に係止するローピングを採用することもできる。 In FIG. 2, the lifting wire 6a is locked from the winch W to the tower main pillar member P3 via the lifting pulley 11a and the mast pulleys 13a and 13c on the tower main pillar member P1. The lifting wire 6b is locked from the winch W to the tower main pillar material P4 via the lifting pulley 11b and the mast pulleys 13b and 13d on the tower main pillar material P2. In order to reduce the load, as shown in FIG. 1, lifting pulleys 11c and 11d are also provided on the main pillar members P3 and P4 of the tower, and the raising wires 6a and 6b are hung and folded back, respectively, via the mast pulley 13. It is also possible to employ roping that locks the pulleys 11a and 11b for lifting up near the locking positions.

マストガイド装置７，８は、マスト３の中間部を相対昇降自在に包囲し、水平支線９，１０により鉄塔主柱材Ｐに支持され、それによりマスト３を鉄塔Ｔに対して垂直に、相対昇降自在に保持する。 The mast guide devices 7 and 8 surround the intermediate portion of the mast 3 so as to be able to move up and down relative to each other, and are supported by the main pillar material P of the tower by the horizontal branch lines 9 and 10, whereby the mast 3 is perpendicularly and relative to the tower T. Hold it up and down freely.

マストガイド装置７，８は、同一構造で、図７，８，９に示すように、マスト３を相対昇降自在に包囲する環状フレーム１４と、当該環状フレーム１４上に設けられるガイドローラ１５及びストッパ１６を具備する。 The mast guide devices 7 and 8 have the same structure, and as shown in FIGS. 7, 8 and 9, an annular frame 14 that surrounds the mast 3 so as to be able to move up and down relative to each other, and a guide roller 15 and a stopper provided on the annular frame 14 are provided. 16.

ガイドローラ１５は、マスト３を構成する四方のマスト主柱材３ａ，３ｂ，３ｃ，３ｄの外側を上下方向に転動するように環状フレーム１４の内側に突出して４つ設けられる。 Four guide rollers 15 are provided so as to project inside the annular frame 14 so as to roll the outside of the four mast main pillar members 3a, 3b, 3c, and 3d constituting the mast 3 in the vertical direction.

図９によく示すように、ストッパ１６は、環状フレーム１４の内側へ突出してマスト主柱材３ａ，３ｂ，３ｃ，３ｄの外側に当接する拘束位置と、それからから離れる解放位置との間を移動自在に環状フレーム１４に組み込まれ、内装ばね１７により、拘束位置に付勢される。ストッパ１６は、拘束位置においてマストガイド装置７，８をマスト３に固定し、解放位置においてマストガイド装置７，８を解放し、それにより、マストガイド装置７，８のマスト３に対する相対上下動を許容する。ストッパ１６は、外側に水平支線９，１０の一端を係止する引き手１６ａを具備する。 As is well shown in FIG. 9, the stopper 16 moves between the restraint position that protrudes inward of the annular frame 14 and abuts on the outside of the mast main pillar members 3a, 3b, 3c, 3d and the release position away from the restraint position. It is freely incorporated into the annular frame 14 and urged to the restraint position by the internal spring 17. The stopper 16 fixes the mast guide devices 7 and 8 to the mast 3 at the restraint position and releases the mast guide devices 7 and 8 at the release position, thereby causing the mast guide devices 7 and 8 to move up and down relative to the mast 3. Tolerate. The stopper 16 includes a pull tab 16a that locks one end of the horizontal branch lines 9 and 10 on the outside.

水平支線９，１０は、一端側がストッパ１６に接続され、他端側が鉄塔主柱材Ｐに係止される。水平支線９，１０が、所定の張力を持って緊線されとき、ばね１７の付勢力に抗してストッパ１６を解放位置に配置するように設けられる。 One end of the horizontal branch lines 9 and 10 is connected to the stopper 16, and the other end is locked to the tower main column member P. When the horizontal branch lines 9 and 10 are tightened with a predetermined tension, the stopper 16 is provided at the release position against the urging force of the spring 17.

図１０ないし図１７について、デリック装置１を鉄塔Ｔ上で所定高さにせり上げる工程を説明する。 10 to 17, a step of raising the derrick device 1 to a predetermined height on the steel tower T will be described.

図１０において、デリック装置１は、第２節Ｓ２まで組み立てられた鉄塔Ｔ上に設置され、仮想線で示す第３節の組み立て工事に使用されている。マスト３は、下端部において、水平支線５で鉄塔Ｔの第１節Ｓ１の上端部に支持されると共に、斜支線としての２本のせり上げワイヤ６で第２節Ｓ２の上端部に支持され、さらに中間部において上部マストガイド装置７を介して、第２節Ｓ２の上端部に水平支線９で支持される。 In FIG. 10, the derrick device 1 is installed on the steel tower T assembled up to the second section S2, and is used for the assembly work of the third section shown by the virtual line. At the lower end, the mast 3 is supported by the horizontal branch line 5 at the upper end of the first section S1 of the tower T, and is supported by the upper end of the second section S2 by the two lifting wires 6 as diagonal branch lines. Further, in the intermediate portion, it is supported by a horizontal branch line 9 at the upper end portion of the second section S2 via the upper mast guide device 7.

図１１において、鉄塔Ｔの第３節の組み立てが完了して、デリック装置１をせり上げる準備のために、第１のせり上げワイヤ６ａの鉄塔Ｔへの係止を解いて、第２のせり上げワイヤ６ｂのみでデリック装置１の荷重を支持する。 In FIG. 11, when the assembly of the third section of the steel tower T is completed, the first lift wire 6a is unlocked from the steel tower T in preparation for raising the derrick device 1, and the second lift is released. The load of the derrick device 1 is supported only by the raising wire 6b.

次いで、図１２において、第２のせり上げワイヤ６ｂでデリック装置１の荷重を支持した状態で、せり上げ用滑車１１ｂ，１１ｄを鉄塔Ｔの第３節Ｓ３の上端部へ係止すると共に、せり上げワイヤ６ａをこれらの滑車１１ａ，１１ｃに掛け回し、端部を第３節Ｓ３の上端部に係止することにより、第１のせり上げワイヤ６ａでデリック装置１の荷重を支持する。 Next, in FIG. 12, in a state where the load of the derrick device 1 is supported by the second lifting wire 6b, the lifting pulleys 11b and 11d are locked to the upper end of Section 3 S3 of the iron tower T and are lifted. The load of the derrick device 1 is supported by the first lifting wire 6a by hanging the raising wire 6a around these pulleys 11a and 11c and locking the end portion to the upper end portion of the third section S3.

次いで、図１３において、第１のせり上げワイヤ６ａのみでデリック装置１の荷重を支持した状態で、せり上げ用滑車１１ｂ，１１ｄを鉄塔Ｔの第３節Ｓ３の上端部へ係止すると共に、せり上げワイヤ６ｂをこれらの滑車１１ｂ，１１ｄに掛け回し、端部を第３節Ｓ３の上端部に係止する。また、下部マストガイド装置８の水平支線１０を緊線して、それのストッパ１６をマスト３から外す。 Next, in FIG. 13, while the load of the derrick device 1 is supported only by the first lifting wire 6a, the lifting pulleys 11b and 11d are locked to the upper end of Section 3 S3 of the iron tower T, and at the same time. The lifting wire 6b is hung around these pulleys 11b and 11d, and the end portion is locked to the upper end portion of the third section S3. Further, the horizontal branch line 10 of the lower mast guide device 8 is tightened, and the stopper 16 of the horizontal branch line 10 is removed from the mast 3.

次いで、図１４において、水平支線５及びせり上げワイヤ６ａ，６ｂの係止を解いて、ウィンチＷを巻き戻し、デリック装置１を第３節の高さ相当距離せり下げた後、下部マストガイド装置８の水平支線１０の係止を解いて弛緩させる（図１５）ことにより、ストッパ１６をマスト３に圧接させ、下部マストガイド装置８をマスト３に固定した状態で、図１５に示す位置までマスト３をせり上げる。下部マストガイド装置８は、マスト３と共にせり上がる。 Next, in FIG. 14, the horizontal branch line 5 and the lifting wires 6a and 6b are unlocked, the winch W is rewound, the derrick device 1 is lowered by a distance corresponding to the height of the third section, and then the lower mast guide device is used. By unlocking and relaxing the horizontal branch line 10 of No. 8 (FIG. 15), the stopper 16 is pressed against the mast 3, and the lower mast guide device 8 is fixed to the mast 3 and the mast reaches the position shown in FIG. Raise 3 The lower mast guide device 8 rises together with the mast 3.

次いで、図１６において、下部マストガイド装置８の水平支線１０を緊線して鉄塔Ｔに係止する一方、上部マストガイド装置７の水平支線９の係止を解いて弛緩させることにより、上部マストガイド装置７をマスト３に固定した状態で、図１７に示す位置までマスト３をせり上げる。上部マストガイド装置７は、マスト３と共にせり上がり、上部マストガイド装置７及び下部マストガイド装置８の両者が適正な上方位置に配置されるので、それらの水平支線９，１０及びトラス下端部の水平支線５を所要の高さ位置で鉄塔Ｔに緊線して支持すると共に、せり上げワイヤ６を鉄塔Ｔに係止して、第４節の組立を行う。 Next, in FIG. 16, the horizontal branch line 10 of the lower mast guide device 8 is tightly wired and locked to the tower T, while the horizontal branch line 9 of the upper mast guide device 7 is unlocked and relaxed to loosen the upper mast. With the guide device 7 fixed to the mast 3, the mast 3 is raised to the position shown in FIG. The upper mast guide device 7 rises together with the mast 3, and both the upper mast guide device 7 and the lower mast guide device 8 are arranged at appropriate upper positions, so that the horizontal branch lines 9 and 10 and the lower end of the truss are horizontal. The branch line 5 is firmly supported by the tower T at a required height position, and the lift wire 6 is locked to the tower T to assemble the fourth section.

マスト３のせり上げに応じてマストガイド装置７，８をせり上げる作業は、鉄塔Ｔ側において水平支線９，１０を操作することで行うことができるから、作業者が鉄塔Ｔ側からマスト３側へ移動して作業する必要がない。 Since the work of raising the mast guide devices 7 and 8 according to the raising of the mast 3 can be performed by operating the horizontal branch lines 9 and 10 on the tower T side, the operator can lift the mast guide devices 7 and 8 from the tower T side to the mast 3 side. No need to move to and work.

斜支線とせり上げワイヤ６とを兼ねさせ、かつせり上げワイヤ６を２条とすることで、これを交互に１条ずつ用いてデリック本体２の荷重を支持した状態で他方のせり上げワイヤ６の支持位置を上方へ移動することができる。 By making the diagonal branch line and the lifting wire 6 serve as two lines and using two lines alternately, the other raising wire 6 is supported by the load of the derrick main body 2. Support position can be moved upward.

図１８に示す本発明の他の実施形態においては、上部マストガイド装置７、下部マストガイド装置８が、それぞれ上下２台を一組として設けられる。これにより、マスト３の垂直精度を高め、マストの安定したせり上げ・せり下げを実施できる。 In another embodiment of the present invention shown in FIG. 18, the upper mast guide device 7 and the lower mast guide device 8 are provided as a set of two upper and lower mast guide devices, respectively. As a result, the vertical accuracy of the mast 3 can be improved, and the mast can be stably raised and lowered.

１ デリック装置
２ デリック本体
３ マスト
３ａ〜３ｄ マスト主柱材
４ ブーム
５ 水平支線
６（６ａ，６ｂ）斜支線兼用せり上げワイヤ
７ 上部マストガイド装置
８ 下部マストガイド装置
９ 水平支線
１０ 水平支線
１１ せり上げ用滑車
１２ 台座
１３ マスト滑車
１４ 環状フレーム
１５ ガイドローラ
１６ ストッパ
１６ａ 引き手
１７ ばね
１８ 旋回台座
１９ 引き手
Ｐ 鉄塔主柱材
Ｔ 鉄塔
Ｓ１ 鉄塔の第１節
Ｓ２ 鉄塔の第２節
Ｓ３ 鉄塔の第３節 1 Derrick device 2 Derrick body 3 Mast 3a to 3d Mast main pillar 4 Boom 5 Horizontal branch line 6 (6a, 6b) Raised wire for diagonal branch line 7 Upper mast guide device 8 Lower mast guide device 9 Horizontal branch line 10 Horizontal branch line 11 Lifting cradle 12 Pedestal 13 Mast cradle 14 Ring frame 15 Guide roller 16 Stopper 16a Puller 17 Spring 18 Swing pedestal 19 Puller P Steel tower main pillar T Steel tower S1 Steel tower section 1 S2 Steel tower section 2 S3 Steel tower Section 3

Claims (5)

４つの鉄塔主柱材を有する組立又は解体途上の鉄塔の中心部に直立支持されるトラス柱状のマストと、当該マストの上部に起伏自在に支持されるブームとを具備するデリック本体と、一端側が地上のウィンチに巻かれ中間部が前記鉄塔主柱材上部のせり上げ用滑車に掛けられ他端側が前記マストの下端部に係止されるせり上げワイヤとを具備し、前記せり上げワイヤの巻き取り巻き戻しにより前記鉄塔に対する前記マストの支持位置を上下に移動させることが可能に構成されるデリック装置において、
前記マストの中間部を相対昇降自在に包囲して水平支線により前記鉄塔主柱材に支持され、それにより前記マストを前記鉄塔に対して垂直に相対昇降自在に保持するマストガイド装置であって、
前記マストを相対昇降自在に包囲する環状フレームと、当該環状フレーム上に設けられ前記マストの昇降をガイドするガイドローラと、当該環状フレーム上に設けられ前記マストに係合離脱自在のストッパとを具備し、
前記ガイドローラは、前記環状フレームの内側に突出し前記マストを構成する四方のマスト主柱材の外側を上下方向に転動するように４つ設けられ、
前記ストッパは、前記マスト主柱材の外側に当接する拘束位置と当該マスト主柱材から離れる解放位置との間を移動自在で、ばねにより拘束位置に付勢され、拘束位置において前記環状フレームを前記マストに固定し、解放位置において前記環状フレームの前記マストに対する相対上下動を許容するように前記環状フレームに組み込まれ、
前記水平支線は、一端側が前記ストッパに接続され、他端側が所定の張力を持って前記鉄塔主柱材に係止されるとき、前記ばねの付勢力に抗して前記ストッパを解放位置に配置するように設けられることを特徴とする鉄塔の組立、解体工事用デリック装置のマストガイド装置。 A derrick body having a truss columnar mast that is upright supported in the center of an assembled or disassembled steel tower having four main pillar members, a boom that is undulatingly supported on the upper part of the mast, and one end side. It is provided with a lifting wire that is wound around a winch on the ground, the middle portion is hung on a lifting tackle on the upper part of the main pillar material of the steel tower, and the other end side is locked to the lower end portion of the mast, and the winding of the lifting wire is provided. In a derrick device configured to be able to move the support position of the mast up and down with respect to the steel tower by rewinding.
A mast guide device that surrounds an intermediate portion of the mast so as to be able to move up and down relative to each other and is supported by the main pillar material of the tower by a horizontal branch line, whereby the mast is held so that the mast can be raised and lowered relative to the tower.
It is provided with an annular frame that surrounds the mast so as to be able to move up and down relative to each other, a guide roller that is provided on the annular frame and guides the raising and lowering of the mast, and a stopper that is provided on the annular frame and can be disengaged from the mast. And
Four guide rollers are provided so as to project inside the annular frame and roll on the outside of the four mast main pillars constituting the mast in the vertical direction.
The stopper is movable between a restraint position in contact with the outside of the mast main pillar material and a release position away from the mast main pillar material, and is urged to the restraint position by a spring to hold the annular frame at the restraint position. It is fixed to the mast and incorporated into the annular frame so as to allow the annular frame to move up and down relative to the mast at the release position.
When one end side of the horizontal branch line is connected to the stopper and the other end side is locked to the tower main pillar material with a predetermined tension, the stopper is placed in the release position against the urging force of the spring. A mast guide device for derricks for assembling and dismantling steel towers, which is characterized by being provided so as to be installed. 組立途上の鉄塔に、前記水平支線により支持された前記マストガイド装置によって、前記鉄塔の所定の高さ位置に直立された前記マストを、前記鉄塔の組立作業の進行に応じて前記せり上げワイヤの巻き取りにより順次上方へせり上げていく鉄塔の組み立て工事において、
前記マストガイド装置の前記鉄塔への支持位置を前記マストのせり上げに応じて原位置から所定距離上方の上方位置へせり上げる方法であって、
前記鉄塔上の原位置において前記水平支線を介して支持されている前記マストガイド装置により支持されて原位置にある前記マストを原位置から所定の上方位置へせり上げるに先立って、当該マストを前記鉄塔に対して原位置から所定距離下方の下降位置まで下降させる第１の工程と、
前記第１の工程の後、前記水平支線の前記鉄塔主柱材への支持を外し、前記マストガイド装置の前記ストッパを拘束位置に配置することにより、原位置にある当該マストガイド装置を下降位置にある前記マストに固定する第２の工程と、
前記第２の工程の後、固定された前記マストガイド装置を伴って、下降位置にある前記マストを原位置までせり上げることにより、当該マストガイド装置を原位置から上方位置へ移動させる第３の工程と、
前記第３の工程の後、上方位置にある前記マストガイド装置の水平支線を緊線して前記鉄塔主柱材へ支持し、当該マストガイド装置の前記ストッパを解放位置に配置することにより、当該マストガイド装置を前記マストに対して自由にする４の工程とを含むことを特徴とする請求項１に記載のマストガイド装置の移設方法。 The mast, which is upright at a predetermined height position of the tower by the mast guide device supported by the horizontal branch line on the tower in the process of assembly, is attached to the rising wire according to the progress of the assembly work of the tower. In the assembly work of the steel tower, which is gradually raised upward by winding
A method of raising the support position of the mast guide device to the steel tower to an upper position a predetermined distance above the original position according to the raising of the mast.
Prior to raising the mast in the original position, which is supported by the mast guide device supported by the mast guide device at the original position on the tower via the horizontal branch line, from the original position to a predetermined upper position, the mast is attached to the tower. On the other hand, the first step of lowering from the original position to the lowering position by a predetermined distance, and
After the first step, the support of the horizontal branch line to the tower main pillar material is removed, and the stopper of the mast guide device is arranged at the restraint position, whereby the mast guide device in the original position is lowered. The second step of fixing to the mast in
After the second step, the mast guide device is moved from the original position to the upper position by raising the mast in the descending position to the original position with the fixed mast guide device. Process and
After the third step, the horizontal branch line of the mast guide device at the upper position is tightly connected to support the tower main pillar material, and the stopper of the mast guide device is arranged at the release position. The method for relocating a mast guide device according to claim 1, further comprising four steps of freeing the mast guide device with respect to the mast. 請求項１に記載のマストガイド装置が前記マストの中間部を相対昇降自在に包囲して水平支線により前記鉄塔主柱材に支持されることを特徴とするデリック装置。 The derrick device according to claim 1, wherein the mast guide device surrounds an intermediate portion of the mast so as to be relatively ascending and descending, and is supported by the steel tower main pillar material by a horizontal branch line. 請求項１に記載のマストガイド装置が上下に相互間隔を置いて２組前記鉄塔主柱材に支持されることを特徴とする請求項３に記載のデリック装置。 The derrick device according to claim 3, wherein the mast guide device according to claim 1 is supported by two sets of the main pillar members of the steel tower at a vertical interval. 前記マストガイド装置は、それぞれ上下に相互間隔を置いて配置される２台ずつが１組として構成されることを特徴とする請求項４に記載のデリック装置。 The derrick device according to claim 4, wherein the mast guide device is configured as a set of two mast guide devices arranged one above the other at intervals.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943795A (en) * 1982-09-02 1984-03-10 日立建機株式会社 Mast supporter for climbing crane
JPS63196493A (en) * 1987-02-04 1988-08-15 日立建機株式会社 Ground push-up type climbing crane for constructing steel tower
JP2009133139A (en) * 2007-11-30 2009-06-18 Tlc:Kk Steel tower assembling/disassembling derrick, and method of removing the same
US20150167342A1 (en) * 2012-05-18 2015-06-18 Structural Research, S.L. Self-Climbing Telescopic Crane and Method for Mounting Pre-Fabricated Concrete Towers
JP2017119571A (en) * 2015-12-28 2017-07-06 株式会社シーテック Derrick for assembling/disassembling steel tower

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943795A (en) * 1982-09-02 1984-03-10 日立建機株式会社 Mast supporter for climbing crane
JPS63196493A (en) * 1987-02-04 1988-08-15 日立建機株式会社 Ground push-up type climbing crane for constructing steel tower
JP2009133139A (en) * 2007-11-30 2009-06-18 Tlc:Kk Steel tower assembling/disassembling derrick, and method of removing the same
US20150167342A1 (en) * 2012-05-18 2015-06-18 Structural Research, S.L. Self-Climbing Telescopic Crane and Method for Mounting Pre-Fabricated Concrete Towers
JP2017119571A (en) * 2015-12-28 2017-07-06 株式会社シーテック Derrick for assembling/disassembling steel tower

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