JPS63304874A - Moving scaffold apparatus of metal structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a mobile scaffolding device for metal structures.

(Prior Art) In order to inspect, repair, and perform incidental work on various parts of steel structures such as bridges, it is common practice to temporarily erect suspended scaffolding and use this scaffolding to perform the above-mentioned work. There is.

In the case of bridges, the above-mentioned suspended scaffolding is assembled by suspending pipe materials or wood using chains from plate girders, trusses, boxes, etc.; however, such temporary scaffolding is installed in high places. However, since it requires a lot of labor, it is expensive and inefficient. Furthermore, since the temporary position of conventional suspended scaffolding is fixed, in order to carry out the above-mentioned work over a large area such as a bridge, the scaffolding had to be repositioned each time, which was not easy.

In order to improve the above-mentioned drawbacks, a suspended scaffold has been proposed in which the scaffold is suspended from rollers that run along the plate gutter and can be moved on the plate gutter.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional suspended scaffolding, there are obstacles such as stiffeners and splices in the plate gutter.
There is a problem in that it can only be moved within the range between these installations and cannot be moved over the entire length. Furthermore, since the rollers are placed on the surface of the plate gutter and run, there is a problem that the coating of the plate gutter is damaged.

In view of this, the present invention has been made for the purpose of providing a mobile scaffolding device that allows a suspended scaffold to travel even if there is an obstacle on the structural material side such as a plate gutter, and does not damage the structural material. It is.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the problems of the above-mentioned prior art, the present invention provides a magnet that is attracted to a metal structural material such as a bridge girder, and a length that is held by the magnet and has a flange portion. It is equipped with a guide rail of a length, a truck having wheels that roll while engaging with the flange portion of the guide rail, a scaffolding frame supported by the truck, and a work scaffolding board supported by the scaffolding frame. It is characterized by:

(Function) With the above configuration, the guide rail is attached via the magnet to the part of the metal structure made of steel or other material where the magnet acts, and the wheels of the trolley are engaged with the flange portion of this guide rail. By suspending the scaffolding, the trolley can be moved to the desired location without being obstructed by obstacles on the structure side, and at the same time prevents damage such as peeling off the structure's paint. Never give up.

(Example) The present invention will be described below with reference to embodiments shown in the drawings.

1 to 8 show an embodiment in which the present invention is applied to a suspended scaffold for maintenance, inspection and repair of bridges.

In Fig. 1, the reference numeral 1.1.1 indicates a steel girder made of L-section steel constructed in the axial direction of the bridge, and these steel girders 1.1.1
A concrete road surface 2 (details not shown) is constructed by known means.

In the mobile scaffolding device according to the present invention, magnets 3, 3, .
, 4 are held by suction, and a trolley 5 is attached to these guide rails 4, 4.
, 5 . . . The suspended scaffold 6 is suspended and supported.

The above-mentioned magnet 3 has magnetic poles 3B, 3B attached to both sides of a polarizing material 3A, as shown in FIG. 8 as a concrete example of the upper half of a permanent magnet.
A rotary permanent magnet body 3C is provided astride B and 3B so that it can be rotated from the outside, and the lower half 3' has a similar configuration.

Therefore, by positioning the N and S poles of one permanent magnet body 3C on the left and right as shown in the figure, magnetic lines of force 7 are formed and the permanent magnet body 3C is attracted to the steel girder 1, which is a metal structure.
By rotating the N and S poles by 90'' to position them parallel to the polarizing material 3A, the lines of magnetic force 7 disappear and become separated from the steel girder 1.

Note that the magnet 3 may be an electromagnet instead of a permanent magnet.

The guide rail 4.4 has flange portions 4A, 4A that protrude horizontally along the longitudinal direction, and in the embodiment shown in FIG. The present invention can be similarly applied even if a box-shaped steel girder 1 is used as shown in the figure.

As shown in FIG. 7 as an enlarged view of section A in FIGS. 5 and 6, the truck 5 has the guide rail 4 attached to the truck body 5A.
The left and right wheels 8, 8 that are placed on the upper surface of the flange portions 4A, 4A and roll, and the roller 9, which is placed along the lower surface of the guide rail 4 and prevents the bogie 5 from floating, are pivoted. The upper end of the hanging rod 10 of the hanging scaffold 6 is connected to the lower part of the trolley body 5A via a pin 11.

In the hanging scaffold 6, the horizontal rods 12, 12 are fixed to the lower ends of the hanging rods 10, 10, . . . suspended by the carts 5, 5, . , this horizontal rod 1
A lightweight scaffolding board 14 made of steel plate or other material is stretched over 2.12, and a worker can work while standing on this scaffolding board 14.

Therefore, in the above embodiment, as shown in FIGS. 1 and 2, magnets 3, 3, etc. are attracted to the lower surface of the steel girder 1.1 of the constructed bridge at predetermined intervals. Guide rail 4.4 via magnet 3.3...
is sucked up and held in the longitudinal direction of the steel girder 1.1. The flange portions 4A, 4A of the guide rails 4, 4 are connected to the carts 5, 5...
The wheels 8.8 and the supports engage the rollers 9, and the hanging scaffold 6 is suspended by the hanging rods 10, 10, . . . suspended from these carts 5, 5, .

A worker rides on the scaffold board 14 of the suspended scaffold 6 constructed in this manner and performs maintenance inspection and repair work on the lower surface of the bridge. When the work at that point is finished, the wheels 8, 8 of the cart 5 can be moved to the next position by running the carts 5, 5...
The receiver is moved along the flange portion 4A of the guide rail 4 by the rollers 9, and the suspended scaffold 6 can be moved to a desired position. In this case, even if there is an obstacle Y on the steel girder 1 as shown in the third diagram, the guide rail 4
Since it is placed in a lower position, the trolley is 5゜5...
The hanging scaffold 6 can be moved without affecting the running of the suspended scaffold 6.

When removing the suspended scaffolding 6, remove the permanent magnet 3 on the upper side of the magnet 3 (or the lower side not shown in FIG. 8).
They can be separated by rotating C to eliminate the lines of magnetic force 7.

9 to 12 show an embodiment in which the present invention is applied to a vertical member 15 such as a steel column. Place the guide rail 4 in front of these magnets 3.3...
', 4' are vertically adsorbed and held, and the bogie 5 is attached to the flange portions 4'A, 4'A of the guide rails 4', 4'.
', 5'... are engaged in a vertically movable manner to support the scaffold 6 extending laterally.

The guide rail 4' and truck 5 in this embodiment are as follows:
As shown in FIG. 12, which is an enlarged view of part B in FIG.
, 8', and the toothed bearing for the roller 9 is a roller 9', and a rack 16° 16 is formed at each corresponding location on the guide rail 4', and this toothed wheel 8' .

It is raised and lowered by rotationally driving 8' by a motor (not shown).

According to this embodiment, even if the metal structure extends in the vertical direction, work can be performed by raising and lowering the scaffold 6.

〔Effect of the invention〕

As explained above, the mobile scaffolding device for metal structures according to the present invention includes a magnet that is attracted to a metal structure material such as a bridge girder, a long guide rail that is attracted and held by the magnet and has a flange portion, and a long guide rail that is attracted and held by the magnet and has a flange portion. The structure includes a truck with wheels that engage with the flange of the rail and roll, a scaffolding frame supported by the truck, and a work scaffolding board supported by the scaffolding frame, and is used for steel bridges and steel bridges. When a scaffold is erected on a metal structure such as a pillar building, a guide rail is attached to the metal structure side via a magnet, and the scaffold is moved along this guide rail using a trolley, so the metal structure Even if there are various obstacles on the side, the scaffolding can be moved without any problems, and there is no need to change the scaffolding to avoid obstacles, greatly improving work efficiency. can. In addition, since there is no need to engage the bogies with the steel girders themselves, there is no damage to their painted surfaces.Furthermore, since the guide rails are supported by magnets, installation and removal can be done easily and quickly. It also has the excellent effect of improving work efficiency.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention applied to a bridge, FIG. 2 is a schematic side view of the same, FIG. IV-IV line sectional view in Figure 3,
Figures 5 and 6 are illustrations of applicable steel girders, and Figure 7 is an illustration of applicable steel girders.
FIG. 8 is an explanatory diagram of a half part showing an example of the magnet used in the present invention,
Fig. 9 is a front view showing an embodiment of the present invention applied to a vertical member, Fig. 10 is a side view of the same, Fig. 11 is an enlarged view of part 8 of Fig. 10, and Fig. 12 is a horizontal view of the same. 01 is a cross-sectional view.
・Steel girder, 3...Magnet, 3A...Polarized material, 3B
...Magnetic pole, 3C...Permanent magnet, 4.4' -1,
Guide rail, 5, 5'...Dolly, 5A...Dolly body, 6...Scaffolding (suspended scaffolding), 8.8'...Wheel, 9°9'...Roller support, 10 ... Hanging rod, 12.
... Horizontal rod, 14 ... Scaffolding board, 15 ... Vertical member, 16
···rack. Applicant's agent Mr. Sato Figure 2

Claims (1)

[Claims] A magnet that is attracted to a metal structural material such as a bridge girder, a long guide rail that is attracted and held by the magnet and has a flange portion, and a cart that has wheels that engage with and roll on the flange portion of the guide rail. A moving scaffolding device for metal structural materials, characterized by comprising a scaffolding frame supported by the trolley and a working scaffold board supported by the scaffolding frame.