JPH0428367Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a scaffolding device that is installed as a scaffold for work such as repairing structures.

[Problems to be solved by conventional techniques and ideas] Generally, when painting or repairing bridges or other structures such as highways, scaffolding is provided for work. For example, in the case of a highway bridge, this scaffolding consists of a number of link chains suspended from the top of the bridge, and scaffolding boards placed between these link chains, or a special scaffolding structure. was established.

However, with such conventional scaffolding, it is not easy to install and remove it, and there are problems such as the number of suspended link chains becomes large, especially in the case of long structures such as expressway bridges. Ta.

[Purpose of the invention] The present invention was created by focusing on the problems of the conventional technology, and is a simple structure that can be used as a scaffold for work on bridges of expressways or other structures. The purpose of the present invention is to provide a safe scaffolding device that can be easily installed and removed.

[Means for Solving the Problems] In order to solve the above problems, the scaffolding device of the present invention includes a supporting beam section that is attached to the lower surface of the flange of the beam so as to be orthogonal to the length direction of the beam, and A support member fixed to the support beam portion, located on the upper surface of the flange, and having a scaffold lifting rod attached thereto in an upright manner; a scaffold adjustment support rod that is pivotably supported on the support member and is extendable and fixed; and this scaffold adjustment. A scaffolding rod is pivotally supported at one end of the support rod and is held movably up and down by the scaffold lifting rod, and the scaffolding rod is fitted into a supporting beam part and a flange of the beam at a position opposite to the supporting member, and extends along the supporting beam part and the flange of the beam. The fixing member is provided with a movable fixing member, and a tightening member is provided on the fixing portion and fitting the fixing portion and the supporting beam portion to tighten and fix the fixing member to the flange.

[Examples] Examples of the present invention will be specifically described below with reference to the drawings.

Figures 1 to 7 relate to the first embodiment of the present invention, with Figure 1 being a front view of the scaffolding device, Figure 2 being an enlarged view of the fixed part in Figure 1, and Figure 3 being the same as in Figure 2. A cross-sectional view taken along the line A-A, the fourth is an enlarged view of the scaffold support part in Fig. 1,
Figure 5 is a sectional view taken along line B-B in Figure 4, and Figure 6 is a cross-sectional view of Figure 4.
FIG. 7 is a cross-sectional view taken along the line CC in the figure, and a plan view of the beam pipe showing the wedge groove.

In these figures, a scaffolding device 1 is fixed to a lower flange 2a of a section steel (or H-section steel, the same applies hereinafter) that constitutes a beam 2 of a highway bridge, for example. The scaffold device 1 includes a support beam 3, a scaffold support 4 integrally attached to the support beam 3, and a flange 2 that connects the support beam 3 to the support beam 3.
It is composed of a fixing part 5 that is fixed to a. In order to reduce the weight, the supporting beam section 3 is made by horizontally installing a beam section pipe 6 having a triangular cross-sectional shape, for example, with one side of the triangle on the upper side and the top on the lower side. The upper end of the reinforcing plate 7 is welded to the top of the reinforcing plate 7. This reinforcing plate 7 is a beam part pipe 6
The reinforcing plate 7 is formed in such a shape that the width is wide at a portion slightly shifted to one side from the center, and becomes narrower toward the tip, and punch holes 8, . . . are formed in this reinforcing plate 7 to reduce the weight. Further, a reinforcing member 9 having a square cross section is welded to the lower end of the reinforcing plate 7. This reinforcing member 9 is provided in a chevron shape having a top portion on the lower side along the lower end of the reinforcing member 9 from below both ends of the beam pipe 6 .

In the scaffold support part 4, the lower end sides of support plates 10, 10 as a pair of support members are welded to both inclined surfaces of the beam pipe 6, substantially at the center thereof. The support plates 10, 10 are provided with cutout engaging portions 11, 11 so as to be engaged with the upper surface of the lower flange 2a of the shaped beam 2. One end of a scaffolding lifting pipe 12 as a scaffolding lifting rod is welded to the supporting plates 10, 10 on the side where the engaging parts 11, 11 are provided, that is, closer to the middle plate 2b of the beam 2, and the other end side is welded. It extends upward along the middle plate 2b of the beam 2. Moreover, the support plates 10, 10
One end of a scaffold adjustment support pipe 13 is pivotally supported at the outer end of the scaffold by a bolt 14 and a nut 15. The scaffold adjustment support pipe 13 is made up of a pair of expandable thick pipes 13a and thin pipes 13b, and its length can be adjusted and fixed by adjusting the insertion length of the thick pipes 13a. On the other hand, a pipe-shaped fitting part 17 to which a scaffolding pipe 16 serving as a scaffolding rod is horizontally attached is fitted into the scaffolding lifting pipe 12 so as to be movable up and down. This scaffolding pipe 16 extends horizontally in parallel with the beam section pipe 6, and a handrail attachment pipe 18 is erected at its end. Further, the ends of the scaffold adjustment and support pipes 13 and 13a are pivotally supported at the lower end of the scaffolding pipe 16, and the scaffolding adjustment and support pipe 13 allows the scaffolding pipe 16 to be
The ends are supported.

The fixing part 5 is fitted with a pair of fixing plates 19, 19 that are movably fitted along the beam pipe 6, and whose lower sides abut against the inclined surface of the beam pipe 6.
, a bolt plate 20 welded to the upper ends of the fixing plates 19, 19, and an L-shaped fixing bolt 21 screwed into the bolt plate 20. Then, the lower flange 2a of the beam 2 is inserted between the bolt plate 20 and the fixing plates 19, 19 of the fixing part 5 and the upper surface of the beam part pipe 6,
The fixing bolt 21 can be tightened and fixed. Further, in the beam pipe 6 on the side where the fixing part 5 is provided, a groove 23 into which a plate-shaped wedge 22 is inserted is formed as shown in FIG. 7 to prevent the fixing part 5 from slipping out. has been done.

In such a configuration, the scaffolding device 1 engages the engaging parts 11, 11 of the scaffold support part 4 into one of the lower flanges 2a of the beam 2 made of section steel, and the fixing part 5
is engaged with the other lower flange 2a of the beam 2, and the fixing bolt 2 is tightened. Further, the wedge 22 is driven into the groove 23 at the position of the fixing part 5. In this way, the scaffolding device 1 is fixed and firmly attached to the lower flange 2a of the beam 2. On the other hand, the heights of the scaffolding pipe 6 and the adjustment support pipe 13 are adjusted as necessary, and the fitting portion 17 is fixed using a fixing member (not shown).
And the expansion/contraction length of the scaffold adjustment support pipe 13 is fixed. In this way, the scaffolding device 1 is attached to beams at a work site at predetermined intervals. and,
Scaffolding boards 24 are stretched over the scaffolding pipe 16 of the scaffolding device 1, and the railing pipe 24 is attached using the railing attachment pipe 18.

Therefore, the scaffolding device 1 is easy to install and move, and is securely attached to the beam because the wedge 21 prevents it from slipping out and coming off.

FIG. 8 shows a second embodiment of the invention. This embodiment is based on the support plate 1 in the first embodiment.
The pivot parts of the scaffold adjustment support pipe 13 of 0 and 10 are extended downward to form an adjustment pivot part 25, and the pivot points of the scaffold adjustment support pipe 13 can be set in two stages, upper and lower, and the scaffold pipe 16 is This allows it to be lowered to the lower position. Note that the reference numeral 26 in FIG. 8 indicates a reinforcing rod.

In the above embodiments, the scaffolding device is attached to a section steel beam constituting a bridge such as an expressway, but it may be installed on a section steel beam of another structure. Moreover, the shape of the support beam part and the scaffold support part can be made into any shape depending on the structure.
Furthermore, the fixing part only needs to have a structure that allows the position to be adjusted according to the size of the beam and prevents it from coming off. Furthermore, although the scaffolding device is made of pipe material to make it lightweight, it may be made of other shapes.

In addition, in the said Example, the pivot part of the scaffold adjustment pipe is provided in arbitrary places, and is not limited to the Example.

[Effects of the invention] As explained above, according to the invention, a support beam portion to which a structure is attached is provided, a scaffold support portion is provided on the support beam portion and makes the scaffold movable, and the above-mentioned Since a fixing part is provided for fixing the support beam part to the structure, it has the effect that it can be used as a scaffold for work with a simple structure, easy to install and move, and is safe.

[Brief explanation of the drawing]

1 to 7 relate to an embodiment of the present invention,
Figure 1 is a front view of the scaffolding device, Figure 2 is an enlarged view of the fixed part in Figure 1, Figure 3 is a sectional view taken along line A-A in Figure 2, and Figure 4 is the scaffold support part in Figure 1. Enlarged view, No. 5
The figure is a sectional view taken along the line B-B in FIG. 4, FIG. 6 is a sectional view taken along the line C-C in FIG. 4, and FIG. 7 is a plan view showing the wedge groove.
FIG. 8 is a front view of the second embodiment. 1... Scaffolding device, 2... Beam, 3... Supporting beam part, 4... Scaffolding support part, 5... Fixing part.

Claims (1)

[Scope of utility model registration request] a support beam attached to the lower surface of the flange of the beam so as to be perpendicular to the length direction of the beam; and a support fixed to the support beam and located on the upper surface of the flange and with a scaffolding lifting rod attached in an upright manner. a scaffold adjustment support rod that is pivotably supported on the supporting member and is extendable and fixed; a scaffolding rod that is pivotally supported on one end of the scaffold adjustment support rod and is held movably up and down on the scaffold lifting rod; , a fixing part that fits into the support beam part and the flange of the beam at a position opposite to the support member and is movable along them; and a fixing part provided on the fixing part and fitting the fixing part and the support beam part. A scaffolding device comprising: a tightening member that is tightened and fixed to a flange.