JPH1113274A - Vent work scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely and efficiently construct a vent work scaffold with high reliability by installing a bracket having a cross beam in a corner part of a square column, arranging a trapezoidal scaffold on a periphery of the square column by extending an oblique line part to the bracket, and erecting a handrail on the trapezoidal scaffold. SOLUTION: A steel pipe bracket 1 having a cross beam 12 is installed in a corner part of a square column 91, and an oblique line part is extended to the cross beam 12 of the bracket 1, and a trapezoidal scaffold 2 is arranged on a periphery of the square column 91, and a handrail 4 is erected on the trapezoidal scaffold 2. The bracket 1 has the cross beam 12, a diagonal member 13 and a stud, and the stud has its upper end an attachment joint part on which the handrail 4 is installed. A clamp to be locked on the cross beam 12 is installed on the trapezoidal scaffold 2. Since this vent work scaffold is metallic and lightweight, assembling work is easy, and installation of the trapezoidal scaffold and the handrail is also easy and reliable in a single operation. Therefore, a highly reliable vent work scaffold can be safely and efficiently constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention consists of a square pillar composed of steel materials, a horizontal member connecting the square pillars in a horizontal direction, a vertical brace interconnecting different heights of adjacent square pillars, and the like. The present invention relates to a vent work scaffold constructed by projecting horizontally around a square pole in order to perform various works at a mid-height position in a weight supporter called "vent".

[0002]

2. Description of the Related Art FIG. 11 is a conceptual diagram showing an example of a vent.
Is a square pillar, 92 is a horizontal material, 93 is a vertical brace, 94 is a base, 95 is a ramp for raising and lowering provided on the side of the square pillar,
96 is a top plate, and B is a structure such as a bridge under construction supported by the vent. When performing various operations near the middle or top of the vent, it is necessary to construct a work scaffold in the horizontal direction around the square pillar 91, but conventionally, it is necessary to construct a vertical and horizontal work platform along the surface of the square pillar 91. It has been common practice to assemble pipes and install so-called steel pipe scaffolds over which scaffold boards are appropriately placed. However, such a steel pipe scaffold must be constructed not only in a portion requiring the scaffold, but also over substantially the entire length of the square pillar from the ground to a predetermined height, so that not only a huge amount of work is required, but also a scaffold construction is required. There was a problem that the work itself was an extremely dangerous work at height.
In addition, steel pipe scaffolds are usually connected using joints, but there is a danger that a joint that is not sufficiently fastened at any part of the whole will lead to a collapse accident.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems in the prior art and to realize a work platform that can be constructed with high reliability, safely and efficiently.

[0004]

A vent work scaffold according to the present invention is a vent work scaffold constructed horizontally at an intermediate height of a square pillar of a vent, which is attached to a corner of the square pillar and has a top surface. A bracket 1 having a cross beam 12 extending in a horizontal direction radially from the corner, a trapezoidal scaffold placed around the square pillar by crossing the hypotenuse portion over the bracket 1, and a stand near the bottom of the trapezoidal scaffold. It is characterized by being composed of a handrail to be provided.

[0005] The bracket used for the vent work scaffold of the present invention comprises a vertical pillar, a cross beam extending horizontally from near the upper end of the pillar, and a diagonal member extending diagonally downward from near the lower end of the pillar. It is composed of a pillar that vertically connects the vicinity of the end of the cross beam and diagonal member opposite to the pillar, and a base plate attached to the end of the cross beam and diagonal material opposite to the pillar. Further, the trapezoidal scaffold used for the vent work scaffold of the present invention has a trapezoidal shape in which a scaffold plate and a gap plate are laid out side by side, and the ends are connected by end metal fittings, and are fixed to the cross beams of the bracket near both ends of the hypotenuse. It is provided with clamping means.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a square pillar 91 of a vent in this embodiment.
1 is a perspective view of the vent work scaffolding constructed in the middle of the steel pipe having a cross beam 12 attached to a corner of a square pole 91 and having a horizontal beam 12 extending horizontally from the corner on the upper surface. The bracket 2 is a trapezoidal scaffold arranged around the quadrangular prism 91 by crossing the oblique side of the cross beam 12 of the bracket 1, and 4 is a handrail erected near the bottom of the trapezoidal scaffold 2.

FIG. 2 is a front view of the bracket 1, and FIG. 3 is a plan view. The bracket 1 includes a vertical pillar 11, a horizontal beam 12 extending horizontally from near the upper end of the pillar 11, and a pillar 11.
A diagonal member 13 extending diagonally downward from the lower end of the cross member, and a column member 14 vertically connecting the cross beam 12 and the vicinity of the end of the diagonal member 13 opposite to the pillar 11.
And a base plate 15 attached to the cross beam 12, the pillar 11 and the opposite end of the diagonal member 13, and the pillar 11 has a plug-in joint for attaching a handrail made of steel pipe to be described later at its upper end. The base plate 15 is an L-shaped plate that is in contact with the two faces of the corners of the square pole 91, and has a bolt hole that is attached to the square pole 91 with bolts.

FIG. 4 is a plan view of a standard trapezoidal scaffold 2, and FIG. 5 is a bottom view of the same. As shown in FIG. 1, the trapezoidal scaffold 2 is spanned between the cross beams 12 of the bracket 1 radially attached to the adjacent corners of the square pole 91, so that its planar shape is a trapezoidal shape with a 45 ° inclination angle. The upper side of the figure in the trapezoid having substantially the same length as one side of the square pole 91 is arranged close to the side face of the square pillar 91, and the hypotenuse is formed in an eight-shape parallel to the cross beam 12 of the bracket 1. I have. A metal scaffold plate 21 provided with a non-slip and a drain hole over the entire surface, a gap plate 22 is also laid out in a trapezoidal shape to form the above trapezoid shape, and an end fitting 23 is arranged at an end which is a hypotenuse portion. The plate 21 and the gap plate 22 are connected to each other, and a reinforcing material is appropriately added to the periphery and the back surface. A clamp 24 is attached near both ends of the end fitting 23 to be engaged with the cross beam 12 of the bracket 1. Clamp
Numeral 24 is a hook-type locking metal provided with a movable claw at its tip to prevent detachment, which is generally used for a locking portion of a cloth frame in a steel pipe scaffold or the like.

Further, a scaffold plate is provided at the bottom of the trapezoidal scaffold 2.
A rectangular hole 25 is provided by notching 21. Although this is not particularly used, it is provided so that, for example, a vertical brace of a vent may interfere with the vent work scaffold, so that it can be passed through. The vent is provided with at least one ramp for raising and lowering. However, the surface provided with the ramp of the square pillar 91 cannot be arranged close to the square pillar in the standard trapezoidal scaffold 2 shown in FIGS. is there. FIG. 6 is a partial plan view of the vent working scaffold when this trapezoidal scaffold 3 of another design is used at the position of the ramp 95 of the quadrangular prism 91, and FIG. 7 is a cross-sectional view of the trapezoidal scaffold 3 taken along the line AA. That is, the scaffolding board 31 and the gap board 32 are appropriately arranged and arranged,
The basic structure that connects the hypotenuse with the end bracket 33 is trapezoidal scaffold 2
However, in the case of the trapezoidal scaffold 3, the mounting relationship with the bracket 1 allows the entire trapezoidal scaffold to escape to the outside of the square pole until it passes the ramp 95, and the worker moves up and down in front of the ramp 95. For manhole 36 and lid 37
As a means for locking the bracket 1 provided near both ends of the end fitting 33 to the cross beam 12, a clamp closer to the outside of the work scaffold may be a clamp 34 similar to that of the trapezoidal scaffold 2; The one is a stronger single tube clamp
Use 35. The single pipe clamp 35 is also a clamp generally used for fastening a steel pipe or the like of a steel pipe scaffold.

FIG. 8 is a plan view showing an example in which a continuous working floor is constructed between two square pillars of a vent using the vent working scaffold of the present invention. In the figure, two square pillars 91a and 91b are shown at the top and bottom, but a trapper 95 is provided on the left side of the upper square pillar 91a, so that the trapezoidal scaffold 3 shown in FIG. Figure 4 except where used
The standard trapezoidal scaffold 2 shown in FIG. In the figure, a trapezoidal scaffold 2a provided on the lower surface of the upper square pillar 91a
And the trapezoidal scaffold 2b provided on the upper surface of the lower quadrangular prism 91b is open, so that a single pipe 5 is appropriately passed from the tip of the bracket 1 using a pipe clamp or the like, and a cloth frame with a plate is interposed therebetween. 6 as a continuous working floor.
FIG. 9 is a plan view and FIG. 10 is a front view as an example of the cloth frame 6 with a plate. A plate provided with a non-slip and drain hole is attached to the upper surface of a rectangular metal frame, and clamps 64 for attachment are provided at both ends. The clamp 64 is a hook-type latch similar to that described above as the clamp 24 in FIG. 4 and the clamp 34 in FIG.

As described above, the vent work scaffold of the present invention is made of metal and lightweight, so that the assembling work is easy.
The installation of trapezoidal scaffolds and handrails is one-touch type, very simple and reliable, and is constructed so that there is almost no gap on the floor surface. Therefore, construction of the work scaffolds is safe, efficient and highly reliable.

[0012]

According to the present invention, there is an excellent effect that a highly reliable vent work scaffold can be constructed safely and efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vent working scaffold showing an embodiment of the present invention.

FIG. 2 is a front view of a bracket according to the embodiment of the present invention.

FIG. 3 is a plan view of a bracket according to the embodiment of the present invention.

FIG. 4 is a plan view of a trapezoidal scaffold according to the embodiment of the present invention.

FIG. 5 is a bottom view of the trapezoidal scaffold according to the embodiment of the present invention.

FIG. 6 is a plan view of another trapezoidal scaffold according to the embodiment of the present invention.

FIG. 7 is a sectional view taken along the line AA in FIG.

FIG. 8 is a plan view showing a work floor according to the embodiment of the present invention.

FIG. 9 is a plan view showing a cloth frame with a plate according to the embodiment of the present invention.

FIG. 10 is a front view illustrating a cloth frame with a plate according to the embodiment of the present invention.

FIG. 11 is a conceptual diagram illustrating an example of a vent according to the present invention.

[Explanation of symbols]

 1 Bracket 2, 3 Trapezoidal scaffold 4 Railing 5 Single pipe 6 Cloth frame with plate 11 Leg 12 Cross beam 13 Diagonal 14 Column 15 Base plate 21, 31 Scaffolding plate 22, 32 Gap plate 23, 33 End fitting 24, 34 Clamp (Clamping means) 25 Drilled hole 35 Single tube clamp (Clamping means) 36 Manhole 37 Lid plate 91 Square pole 92 Horizontal material 93 Vertical brace 94 Base 95 Trap 96 Top plate B Structure

Claims (3)

[Claims] 1. A vent working scaffold constructed horizontally at an intermediate height of a square pillar (91) of a vent, attached to a corner of the square pillar (91) and radiating from the corner on the upper surface. A bracket (1) having a horizontal beam (12) extending in the horizontal direction, and a trapezoidal scaffold (2,
3) and a handrail (4) erected near the base of the trapezoidal scaffold (2, 3). 2. The bracket (1) comprises a vertical pillar (11), a cross beam (12) extending horizontally from near the upper end of the pillar (11), and near a lower end of the pillar (11). (13) that extends diagonally downward from the crossbar (12), and a pillar (14) that vertically connects the vicinity of the end of the diagonal (13) opposite the pillar (11)
2. A scaffold according to claim 1, wherein the scaffold comprises: a cross beam; a base plate attached to an end of the diagonal member opposite to the pillar; 3. The trapezoidal scaffold (2, 3) comprises a scaffold plate (2
1, 31) and gap plates (22, 32) are laid out side by side to form a trapezoidal shape, and the ends are connected by end brackets (23, 33), and are locked to the cross beams (12) of the bracket near both ends of the hypotenuse. 2. A method according to claim 1, further comprising the step of providing clamping means.
Or the vent working scaffold according to 2.