JPH0833076B2 - Suspension scaffolding device for steel tower - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension scaffolding apparatus for a steel pipe single pole power transmission steel tower, which is mainly used for painting a steel pipe single pole power transmission steel tower.

[0002]

2. Description of the Related Art In recent years, steel pipe single-column power transmission towers have been used mainly for power transmission towers in urban areas, but they are often painted for environmental beautification, and furthermore, painting is done regularly. ing.

Conventionally, this kind of coating work is carried out on the assembled scaffold from the ground by assembling an assembly scaffold consisting of steel pipes and bite scaffolds around a steel pipe single pole power transmission tower.

[0004]

However, since many steel pipes and bite scaffolds are required for the assembly scaffold, and much time and effort are required for the assembly and disassembly and removal of the scaffold,
In addition to the complicated management of temporary materials being carried in, there is a problem that the coating work must be extended.

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a suspension scaffolding apparatus for a steel pipe single pole power transmission steel tower, which enables repair work such as painting work to be performed very efficiently. To aim.

[0006]

A suspension scaffolding device for a steel pipe single-column power transmission tower according to the present invention is unitized into a plurality of portions which can be fixed at the outer circumference of the steel pipe single-column power transmission tower and at arbitrary positions in the height direction. A suspension jig that can be assembled and disassembled, a ring-shaped gripping portion that suspends the suspension scaffolding, and a suspension jig that includes horizontally protruding arm portions on both sides of the gripping portion, and a pulley on the arm portion. A wire attached via the wire and a winch for raising and lowering the suspension scaffold via the wire, and fixing the suspension scaffold and raising or lowering the suspension scaffold alternately to change the position of the suspension scaffold, and the steel pipe single unit. It is possible to repair the steel tower for pole transmission up to the lower position of the arm of the steel tower for steel pole single pole transmission,
The suspension scaffold is fixed to a lower position of the arm, and an assembly scaffold is assembled on the suspension scaffold with an electric insulating material or a scaffold material subjected to an electric insulation treatment, and the assembly scaffold is above the arm. It is designed to be able to repair parts.

[0007]

1 to 4 show an embodiment of a suspension scaffolding apparatus for a steel pipe single pole power transmission tower according to the present invention.
Reference numeral 1 is a suspension scaffold mainly used as a work scaffold for painting of a steel pipe single pole power transmission tower A (hereinafter referred to as "steel tower A"), and 2 and 3 are suspension jigs and wires for suspending the suspension scaffold 1 on the steel tower A, and Reference numeral 4 is a winch that raises and lowers the suspension scaffold 1 along the steel tower A.

The suspension scaffold 1 is constructed by laying a steel plate such as punching metal as the floor plate 5 on a floor frame made of L-shaped steel or a light-gauge steel such as a steel pipe, and attaching a handrail (not shown) around the steel tower A. Are continuously formed around the periphery of the (see FIG. 2).

Further, the suspension scaffold 1 is divided into a plurality of parts (four in the embodiment) to be a unit, and is constructed so as to be easily assembled and disassembled.

The suspension scaffolding 1 constructed in this way is constructed so as to be horizontally hung around the steel tower A by means of the suspension jig 2 and the wire 3, and the outer circumference of the steel tower A and any position in the height direction. It can be fixed to.

The hanging jig 2 has a ring-shaped grasping portion 2a so that the hanging jig 2 can be wound around the steel tower A, and two arm portions 2b, 2 protruding horizontally on both sides of the grasping portion 2a.
It is composed of b and b (see Figures 3 and 4).

The grasping portion 2a is constructed so that the diameter can be changed according to the outer diameter of the steel tower A so that it can freely correspond to the outer diameter of the steel tower A, and the pulley 6 is attached to the tip of the arm portion 2b. The wire 3 wound around the drum of the winch 4 is wound around the pulley 6, and the suspension scaffold 1 is hung at the end of the wire 3.

On the column base of the tower A, a winch base 7 made of a shaped steel such as H-shaped steel is assembled in a cross girder shape surrounding the tower A, and two power winches 4 are mounted on the winch base 7. , 4 are installed. By driving the winch 4, the suspension scaffold 1 can be freely moved up and down along the steel tower A.

A plurality of guide rollers (not shown) that slide on the side surface of the tower A are attached to the suspension scaffold 1 so that the suspension scoops smoothly.

With such a structure, the coating operation of the steel tower A with the suspension scaffold according to the present invention will be described in order.

(1) First, the winch base 7 is assembled on the column base of the tower A, and the two winches 4 are installed on the winch base 7 (see FIG. 5). Further, the hanging jig 2 is attached to the upper part of the intermediate landing B of the tower A (see FIG. 6), and the wire 3 wound around the winches 4 and 4 is wound around the pulley 6 of the hanging jig 2. Furthermore, hanging scaffolding 1
And hang it on the wire 3 (see FIG. 6). In addition,
Crane D (see Fig. 1) shall be used for these operations.

(2) Next, the winches 4 and 4 are driven so that the suspension scaffold 1 is pulled up along the steel tower A to a position immediately below the intermediate landing B, and the suspension scaffold 1 is fixed at that position.

Then, the suspension scaffold 1 is used as a work scaffold to temporarily dismantle the intermediate landing B and remove it. After the removal work of the intermediate landing B is completed, the suspension scaffold 1 is released from the steel tower A, and the winch 4 is driven to lower the suspension scaffold 1 to the ground.

(3) Next, in order to bridge the transmission line, the tower A
The hanging jig 8 configured exactly the same as the hanging jig 2 is attached to the upper side of the lowermost arm C that is provided on the side of the
The wire 3 of the hanging jig 2 is replaced with the pulley 6 of the hanging jig 8 (see FIG. 7).

(4) Next, the winch 4 is driven again to pull up the suspension scaffold 1 to the mounting position of the suspension jig 2, and the suspension scaffold 1 is used as a working scaffold to remove the suspension jig 2.

(5) Next, the winch 4 is driven again to pull up the suspended scaffolding 1 to below the lowermost arm C.

(6) Next, while suspending the scaffolding 1 with respect to the steel tower A, alternately performing fixing, opening and lowering, the suspension scaffolding 1 is carried out.
Perform the undercoat work of the tower A from the arm C portion to the ground in order within reach.

(7) When the undercoating of the portion below the armrest C is completed to the ground, the winch 4 is driven to pull up the hanging scaffold 1 to the lower portion of the armrest C and fix it to that portion.

(8) Next, the assembly scaffold 9 is assembled on the suspended scaffold 1 with an electrically insulating material or a scaffold material subjected to an electrical insulation treatment (for example, scaffold material made of FRP), and the assembled scaffold 9 is worked. As a scaffold, the arm C and the part above the arm C are painted (see Figures 8 and 9). In this case, Tower A
By performing the coating work of the armrest C and the left and right sides back and forth, the painting work can be performed without completely stopping the power transmission.

Further, since the assembly scaffold 9 is made of an electric insulating material, power can be transmitted in an emergency without disassembling and removing the assembly scaffold 9.

(9) When the coating work of the arm C and the upper part of the arm C is completed, the assembly scaffold 9 is disassembled and put down on the ground. The crane D is also used for this work.

(10) Next, the suspension scaffold 1 is released from the steel tower A, the winch 4 is driven, and the descent and the fixing of the suspension scaffold 1 are alternately performed, and finish coating is performed up to the installation position of the intermediate landing B. When the finishing painting work up to the installation position of the intermediate landing B is completed, the suspension scaffold 1 is fixed again to this portion.

Then, the suspended scaffold 1 is used as a work scaffold to reassemble and install the intermediate landing site B.

Further, the hanging jig 2 is attached to the upper part of the intermediate landing B again, and the pulley 6 of this hanging jig 2 is replaced with the wire 3 hung on the pulley of the hanging jig 8. In this case, the wire 3 may be replaced with the pulley 6.

(11) Next, the hanging jig 8 is removed.

(12) Next, the winch 4 is driven to alternately fix and lower the hanging scaffold 1, and finish coating from the intermediate landing B to the ground is performed.

Finally, the hanging jig 2 and the wire 3 are removed, and then the winch 4 and the winch base 7 are removed. This work is also performed using crane D.

In the embodiment, the lower portion of the arm C is first coated, and then the upper portion of the arm C is coated. However, the upper portion is coated first, and then the lower portion is coated. Part may be performed, and either method shall be selected according to the situation.

When removing or installing the intermediate landing B, the hanging jig 2 is attached to the upper part of the intermediate landing B, and the hanging scaffold 1 is hung on the hanging jig 2, but the hanging jig 2 is omitted. However, the hanging metal fitting 8 may be attached to the upper part of the arm C from the beginning, and the hanging scaffold 1 may be hung on the hanging jig 8.

[0035]

Since the present invention has the constitution described above, it has the following effects.

(1) Since it is not necessary to assemble a temporary scaffold from the ground along the steel tower, the steel pipes and bite scaffolds as temporary materials can be significantly reduced, and the management of temporary materials is easy. Also, since the work of assembling the temporary scaffold is eliminated, various repair work such as painting work can be performed in a short period of time.

(2) For the work below the arm for bridging the power transmission line, the suspension scaffold is moved along the steel tower while alternately repeating fixing and lifting or lowering of the suspension scaffold, and It is used as a work scaffold.For the work above the arm, the suspending scaffold is fixed to the lower part of the arm, the assembly scaffold is assembled on this suspending scaffold, and this assembly scaffold is used as the work scaffold. There is no waste and workability is extremely good.

(3) Since an insulating material or a scaffold material subjected to an insulation treatment is used for the assembly scaffold above the armrest,
Electric shock accidents during repair work can be prevented and work safety can be improved.

[Brief description of drawings]

FIG. 1 is a front view of a steel tower showing a state of installation of a suspension scaffolding device for a steel pipe single-column power transmission tower according to the present invention.

FIG. 2 is a plan view of a suspended scaffold.

FIG. 3 is a plan view of a hanging jig.

FIG. 4 is a partial front view of a hanging jig.

FIG. 5 is a plan view showing an installed state of a winch base and a winch.

FIG. 6 is a partial front view of a steel tower showing a mounting state of suspension scaffolds.

FIG. 7 is a partial side view of a steel tower showing a mounting state of suspension scaffolds.

FIG. 8 is a front view of the upper part of the steel tower showing the assembled state of the assembled scaffolds.

FIG. 9 is a front view of the upper part of the steel tower showing the assembled state of the assembled scaffolds.

[Explanation of symbols]

A: steel tower (steel pipe single pole power transmission steel tower), B: middle landing, C
… Arms, 1… Hanging scaffolding, 2… Hanging jigs, 3… Wires,
4 ... Winch, 5 ... Floor board, 6 ... Pulley, 7 ... Winch base,
8 ... Hanging jig, 9 ... Assembly scaffolding.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keisaku Ibata No. 20 Toda, Kitagawara, Itami City, Hyogo Prefecture 2 Asahi Metal Seiko Co., Ltd. (72) Inventor Minoru Yokoyama 6-2 Ginza, Chuo-ku, Tokyo No. 10 In stock company, Tomoeumi Steel Works (72) Inventor Mitsuo Miura 6-2-10 Ginza, Chuo-ku, Tokyo In stock company, Tomoeumi Works (56) Reference JP-A-63-93960 (JP) , A) Actually opened 63-117846 (JP, U) Actually opened 61-1546 (JP, U)

Claims (1)

[Claims] 1. A suspension scaffold that can be assembled and disassembled into a plurality of parts that can be fixed to the outer periphery of a steel pipe single-column power transmission tower and at arbitrary positions in the height direction, and a ring-shaped gripping part that suspends this suspension scaffold. And a hanging jig consisting of horizontally protruding arm portions on both sides of the grip portion, a wire attached to the arm portion via a pulley, and a winch for raising and lowering the hanging scaffolding through the wire. And fixing the suspension scaffold and alternately repeating ascending or descending to change the position of the suspension scaffold to repair the steel pipe single pole power transmission steel tower under the armor of the steel pipe single pole power transmission steel tower. The suspension scaffold is fixed to the lower position of the arm, and the assembly scaffold is assembled on the suspension scaffold with an electric insulating material or a scaffold material subjected to an electric insulation treatment. A suspension scaffolding device for a steel pipe single pole power transmission steel tower, characterized in that the upper part of the armature above the assembled scaffold can be repaired.