JPH11324314A - Work floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rationalize the utilization of material by eliminating superposition of scaffold plates so as to easily and safely conduct the floor material laying work. SOLUTION: A work floor 7 is formed by a joist 8, a flat plate 9 and an adjusting plate 10 laid between sleeper materials 6, and the adjusting plate 10 has a ladder-like frame body 11, a cover 12 and, cover fixtures 13, 14. The sleeper material 6 is provided with one opening part in the center of the upper surface, and the joist 8 and the bent plate members 16, 11c of the ladder-like frame body 11 are locked in the opening part. The ladder-like frame body 11 is provided with a guide 11b projected on the upper surface thereof, both ends of the flat plate 9 are pressed to the projections, and the cover fixtures 13, 14 are fastened with the projections and both ends clamped by the cover 12 to fix the cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work floor formed widely on a scaffold plate mounted on a joist, and more particularly to a work floor capable of efficiently processing and fixing an end portion of the scaffold plate.

[0002]

2. Description of the Related Art When constructing an elevated road in an urban area, a pier, a road girder and the like are arranged to prevent flying and falling objects, and a protective floor is hung below the road girder to perform subsequent work. . Also, when performing reinforcement work or maintenance work on existing highways etc., install suspension scaffolds widely on the underside of the main girder and perform reinforcement work etc. while securing traffic on the general road below. I have.

Conventionally, such a suspended scaffold is a scaffold composed of a plywood panel, a plywood scaffold board, a cedar board, or the like, on which a large pulling material is supported by a hanging material hanging down from a structure, and on a joist laid between the large pulling materials. The boards were placed to form a working floor. These scaffolds must be fixed at two or more points in order to prevent dislocation or falling off. In addition, care must be taken to prevent the end of the scaffold plate from protruding. For this reason, in the conventional work floor, the end of the scaffold plate is overlapped on the joist, and safety is achieved by locking these and the joist.

[0004]

However, in the case of a work floor which is formed over a wide area, the area of the floor material not used by the wrap is enormous, and it cannot be said that it is reasonable from the viewpoint of material utilization. Also, a scaffold is laid on the joist with a predetermined projection size, and further a continuous scaffold is laid on the joist while observing a predetermined overlapping size, and these ends are fixed to the joist with a band material or the like. The work was complicated, and was dangerous when performed at a high place.

[0005] The present invention solves the above-mentioned problems, eliminates superposition of scaffolding boards, rationalizes the use of materials, and
It is an object of the present invention to provide a work floor in which floor work can be easily and safely performed.

[0006]

In order to solve the above-mentioned problems, a work floor according to the present invention comprises:
A flat plate that spans multiple joists and a horizontal bridge
A ladder-shaped frame that protrudes the guide from the beam member, a lid that covers the end of the flat plate and the upper surface of the frame that comes into contact with the guide, and a lid that fastens the lid to the large pulling member and / or the ladder-shaped frame It is characterized by having a fixture.

As the flat plate, a plate material of a predetermined size, for example, a plywood panel is used. The distance between the guides of the adjacent ladder-shaped frames is set in accordance with the dimensions of the flat plate. If the ladder-like frame is previously installed between the joists at a predetermined interval, the flat plate is restricted by the guide just by placing it. The flat plate supported by the joist and the ladder-like frame is fixed at both ends by a lid and a lid fixing bracket.

According to a second aspect of the present invention, there is provided a work floor having a substantially lip groove-shaped cross-section provided with a single opening in the center of the upper surface as a large pulling material, and being engaged with both side surfaces of the beam main body to be inside the large pulling material. It has a plurality of cross members, and is a plurality of large pull members arranged in parallel while supporting the cross members with hanging members hanging down from the structure, wherein the joists and the ladder-like frame body have both ends. And a bent plate body hooked on the opening.

The bent plate is closely attached to the opening and the upper surface of the beam main body to support the joist and the ladder-like frame, thereby restricting the axial movement. Although the external appearance of the beam body is substantially rectangular, a pair of reinforcing ribs is provided in the opening, and a connecting plate is fixed between these opposing reinforcing ribs, while the center of the tip of the bent joist plate is bent upward. In this configuration, the joist folded plate is hooked with the connecting plate interposed therebetween, so that the movement in the axial direction of the large pulling material is suppressed. If a notch for accommodating the cross member is provided at the end of the bent plate of the ladder-shaped frame, and the cut-out interval and the cross-member interval are matched, the installation of the ladder-shaped frame becomes easy.

If a hole is formed in the connecting plate and a wire is passed through the hole and locked to the protrusion, it is useful to prevent the work floor from rising. Since the protrusion also has the function of suppressing the lateral movement of the flat plate,
It is desirable that the spacing between the joists be determined in consideration of the dimensions of the flat plate. The horizontal member is for locking a shaft such as a rivet in a hole formed in the side surface of the beam main body, and a hanging member locking member at the end of the hanging member is attached.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view of a work floor with a suspended scaffold installed on the lower surface of a bridge, FIG. 2 is a plan view showing components of the work floor in a stepwise manner, FIG. 3 is an enlarged view of FIG. 1a, and FIG. FIG. 5 is a sectional view showing an IV-IV section, and FIG.
It is sectional drawing which shows the VV cross section. In this suspension scaffold 1, a suspension scaffold support 3 is attached to a main girder 2 of a bridge, a suspension 4 made of a chain or the like is hung on this support, and a suspension stopper 5 is engaged with a lower end thereof. Large pulling material 6 supported by this hanging material locking device 5
Are arranged in parallel with a predetermined interval, and the work floor 7 is laid across each of the large materials.

As shown in FIG. 2, the work floor 7 includes a joist 8 extending between the large pulling members 6 and a flat plate 9 bridged over the joist 8.
And an adjustment plate 10 laid horizontally between the large attraction materials 6,
The adjustment plate 10 has a ladder-shaped frame 11, a lid 12, and lid fixing brackets 13, 14.

As shown in FIGS. 3 to 5, the large pulling member 6 has a structure in which the horizontal members 6b are arranged at appropriate intervals inside the beam main body 6a, and the beam main body 6a has a single opening at the center of the upper surface. 6c is a substantially lip groove-shaped cross section provided with 6c. A pair of reinforcing ribs 6d, 6d are provided in the opening 6c, and a connecting plate 15 is fixed between the opposing reinforcing ribs. The horizontal member 6b is a shaft such as a rivet, and the hanging member locking member 5 supported by the hanging member 4 is attached thereto.

A bent plate 16 is fixed to the end of the joist 8.
This is adhered to the upper surface of the beam body 6 and the reinforcing rib 6d to support the joist 8 and restrict its axial movement. Bent plate 16
Is bent upward at the center of the tip to form a projection 16a. On the other hand, if a hole 15a is formed in the connecting plate 15 and the wire 17 is passed through the hole 15a and locked to the protrusion 16a, it is useful to prevent the work floor 7 from blowing up. The projection 16a also has a function of suppressing the lateral movement of the flat plate 9. In order to facilitate the installation of the flat plate 9, it is desirable that the interval between the protrusions is determined in consideration of the dimensions of the flat plate 9.

When the joist 8 is erected on the large pulling member 6 in this manner, the bent plate 16 is hung on the connecting plate 15 so that the lateral movement of the joist 8 is suppressed and at the same time, the joist is made. 8
Since the mounting locations are determined at predetermined intervals, the installation becomes easier. In addition, a long hole 6e is formed on the side surface of the beam main body where the connecting plate 15 is provided, so that it becomes a mark. In addition, the joist 8 which does not need to take the blow-up prevention measure is the connecting board 1
It is not limited to the position of 5 and can be installed at any position of the large drawing material 6.

Next, details of the adjustment plate will be described with reference to FIGS. FIG. 6 is a plan view of the ladder-like frame, and FIG.
FIG. 8 is a sectional view showing an I-VII section, and FIG. 8 is a side view of the ladder-like frame. The ladder-like frame 11 has a guide 11b protruding from the upper surface of two beam members 11a and a bent plate 11 at the tip.
c is fixed. The bent plate 11c is attached to the large attracting member 6 like the bent plate 16 of the joist 8.

Since both ends of the flat plate are in contact with the guides 11b, the distance between the guides of the adjacent ladder-like frames 11 is set in accordance with the dimensions of the flat plate 9. As shown in FIG. 8, a notch 11 for storing the cross member 6b at the tip of the bent plate 11c.
If d is provided, the installation position of the ladder-like frame 11 is determined, and the mounting work is also facilitated. If the ladder-like frame 11 is previously installed at predetermined intervals between the joists 8 in this manner, the flat plate 9 is restricted by the guide 11b just by placing it.

The flat plate 9 supported by the joist 8 and the ladder-shaped frame 11 is fixed at both ends by a lid 12 and lid fixing brackets 13, 14. The lid 12 has a bottom portion 12a placed on the upper surface of the ladder-shaped frame 11 and an end portion 12b bent above the guide 11b. A concave portion 12c for accommodating the lid fixing bracket 13 is formed at both ends of the bottom, and a hole for inserting the lid fixing bracket 14 is formed at the center of the bottom. The lid fixing bracket 13 for fixing the end of the lid 12 is inserted into the opening 6c of the large attracting material 6 and engages with the reinforcing rib 6d.
The cover fixing metal 14 for fixing the center of the second 2 is screwed to the horizontal rail 11e of the ladder-like frame 11. In the case of an adjustment plate having a short length, the central fixing bracket may be omitted.

In the work floor described above, a plywood dam which has a planar spread is considered as a flat plate, but the plate material is not limited to this. Further, the present invention can be applied to work floors other than the suspended scaffolding, and the present invention is not limited to the configuration described for the large-scale lumber and joists.

[0020]

As described above, the working floor according to the present invention has a structure in which the flat plate bridged over the joist abuts against the guide of the ladder-like frame, and the flat plate end is fixed with the lid and the lid fixing bracket. In addition, there is no wrapped portion of the flat plate, so that the utilization of materials can be rationalized, and the flat plate can be fixed simply by covering the lid, so that the construction is easy and safe.

The work floor according to the second aspect of the present invention is constructed such that a joist and a ladder-like frame are hooked to the opening of the large pulling material by using a beam body having a substantially lip groove-shaped cross section as the large pulling material. Floor disassembly work is simplified.

[Brief description of the drawings]

FIG. 1 is a front view of a work floor by a suspension scaffold installed on a lower surface of a bridge.

FIG. 2 is a plan view showing constituent members of a work floor in a stepwise manner.

FIG. 3 is an enlarged view of a part a of FIG.

FIG. 4 is a sectional view showing a section taken along line IV-IV of FIG. 3;

FIG. 5 is a sectional view showing a VV section of FIG. 4;

FIG. 6 is a plan view of a ladder-like frame.

FIG. 7 is a sectional view showing a VII-VII section of FIG. 6;

FIG. 8 is a side view of the ladder-like frame.

[Explanation of symbols]

 6 large drawing material 6c opening 7 work floor 8 joist 9 flat plate 10 adjusting plate 11 ladder-like frame 11a beam member 11b guide 11c bent plate 12 lid 13 lid fixing bracket 16 bent plate

Continued on front page (72) Inventor Hitada Tsukamoto 11-17 Fuyuki, Koto-ku, Tokyo Holly Stock Company In-house

Claims (2)

[Claims] 1. A ladder-like frame that spans between large pulling members, a flat plate that spans over a plurality of joists, and a ladder-like frame that extends across the large pulling members and protrudes a guide to two beam members. A work floor, comprising: a flat plate end that abuts on a guide; a lid that covers a top surface of the frame; and a lid fixing bracket that fastens the lid to a large drawing material and / or a ladder-shaped frame. 2. The work floor according to claim 1, wherein the large pulling member is provided with a beam body having a substantially lip groove-shaped cross section provided with a single opening in the center of the upper surface, and is engaged with both side surfaces of the beam body. A plurality of large pull members arranged in parallel with supporting the horizontal members by suspending members hanging down from a structure, wherein the joists and the ladder-shaped frame are provided. A work floor, wherein the body includes a bent plate body which is hung on the opening at both ends.