JPS627807Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a passage unit used in a steel pipe scaffold.

BACKGROUND ART Conventionally, for example, at construction sites of reinforced steel and steel-framed concrete structures, single-tube steel scaffolds with handrails constructed as follows have been used.

In other words, two steel pipes with a rectangular cross section (hereinafter referred to as square pipes) spanned between steel beams.
A steel pipe (circular cross section) for the joists is placed between them, and the steel pipe and the square pipe are tied together with a grid wire, scaffolding boards are laid out on top of that, and a steel pipe (circular cross section) is tied to the square pipe with a grid wire. Two parallel steel pipes (circular in cross section) for handrails, which are parallel to and located above the square pipes, are connected to the building site, which is made to stand upright by tying them together, with wires or connecting tools such as clamps. By using and fixing it, it becomes a scaffold with handrails.

By the way, in order to construct a high-strength single-pipe scaffold, it is possible to use a square pipe that carries most of the weight of the scaffold as a member with a large cross-sectional area, or to use multiple members stacked in two tiers. However, in either case, square pipes are quite heavy, making it difficult for a worker to carry them alone, and the work is especially dangerous when constructing scaffolding at high places. .

In addition, with conventional single-tube scaffolding, the square pipes and steel pipes for the joists, the square pipes and steel pipes for the building site, the steel pipes for the building site, and the steel pipes for the handrails that make up the scaffolding must be tied together. , Not only the construction of temporary scaffolding, but also the dismantling of the scaffolding requires a great deal of effort, expense, and time.

Furthermore, since there are a large number of members that make up the scaffold, there is a risk that the members may be accidentally dropped during assembly and disassembly of the scaffold, causing an unexpected accident.

Therefore, the present invention integrates a lower member corresponding to the square pipe used for scaffolding, an upper member corresponding to the steel pipe for the handrail, and a vertical member corresponding to the steel pipe for the construction site, Furthermore, by arranging diagonal members between the vertical members to form a unit, the present invention aims to eliminate the difficulties and operational risks associated with the construction and dismantling of conventional steel single pipe scaffolding.

According to the present invention, each member constituting the unit,
The load weight of workers and materials to be transported is borne by the entire unit, so the total weight of the unit is
It can be kept to a level that can be carried by human workers.

In addition, by using the unit according to the present invention in a scaffold, the number of component parts of the scaffold can be greatly reduced, and the number of points where the component parts of the scaffold are tied to each other can be significantly reduced. This not only makes it possible to save manpower, economy, and time, but also prevents accidents caused by falling parts on workers.

The features of the invention will become clearer from the following description of the illustrated embodiment.

As shown in FIGS. 1 and 3, the passage unit 10 according to the present invention includes an upper member 12 made of a vertically parallel steel pipe with a circular cross section, a lower member 14 made of a steel pipe with a rectangular cross section, and an upper member 14 made of a steel pipe with a rectangular cross section. It includes a plurality of vertical members 16 made of steel pipes with a circular cross section, which connect the member 12 and the lower member 14, and a plurality of diagonal members 18 made of steel rods with a circular cross section arranged between the vertical members.

As shown in FIG. 3, the plurality of vertical members 16 are welded at their upper ends to the upper member 12 and at their lower ends to the lower member 14.
2 and the two outermost vertical members 16 disposed at a distance from both the left and right ends of the lower member 14, and one or more vertical members disposed at positions equally dividing the space between the two outermost vertical members. It consists of vertical members 16. outermost 2
Each portion between the joining position of the two vertical members 16 and the upper member 12 and the lower member 14 to both left and right ends of the upper member 12 and the lower member 14 overlap each other when extending the plurality of units 10. It becomes a place.

Between the vertical members 16, there are two vertical members 16 and an upper member 12.
and the lower member 14, at least one diagonal member 18 is arranged on the diagonal of the rectangle formed by the lower member 14,
Each end thereof is joined to the upper member 12 and the lower member 14 by welding, respectively.

In the illustrated example, in a central portion of a rectangular portion surrounded by each member 12, 14 and two vertical members 16, the lower ends of two diagonal members 18 that intersect with each other are connected to the two vertical members 16. It is joined to the lower member 14 at a slight distance inward from the material 16. As will be described later, the interval is provided in order to prevent the steel pipe for the joists, which is stretched between two units 10 arranged in parallel at the same height, from moving in the longitudinal direction of the units 10. There is. Note that the two intersecting diagonals 18 are spot welded at their intersections.

In addition, in the case of the unit 20 with a large span,
As shown in FIG. 2, the strength of the unit 20 can be increased by providing two or more of the rectangular sections having two diagonals 18 that intersect with each other.

When constructing a scaffold by placing the passage unit 10 according to the present invention on the steel beams of a building (not shown) and spanning the steel beams, for example, as shown in FIG. A steel pipe 24 having a rectangular cross section is attached to the beam 22 in its longitudinal direction, and the two units are placed in parallel on the steel pipe 24 with the lower member 14 of the unit 10 in contact with the steel pipe orthogonally to the steel pipe. In addition, the lower member 14 is fixed to the steel pipe 24 on the steel beam 22 using a U-shaped connector 26 or a wire (not shown). At this time, if there is another unit 10 to be added to the unit 10, the ends of each unit are overlapped and connected.

In addition, as shown in FIG. 4, if it is difficult to place the unit 10 on the steel beam 22, or for convenience, the unit 10 may be placed on the steel beam by passing the lower member through the web 28 of the steel beam 23 assembled in a lattice. It may be placed between the beams 22.

An example of the unit 10 that is most suitable for such a case will be explained with reference to FIG.

In this example, at least one of the outermost vertical members 16 (in FIG. 1, the right vertical member 16
In a), instead of being connected to the upper member 12 and the lower member 14 by welding, the ends thereof are rotatably connected to the upper member 12 and the lower member 14 at two connecting points 30 and 32, respectively. . This causes the vertical member 16a to rotate about the connection point 30.

At the connection points 30 and 32, as shown in detail in FIG.
The lower end 42 of the steel pipe 34 is welded to the upper end surface of the lower member 14 and is rotatably supported by a pin 40 between two steel brackets 38 that extend downward and are welded to the lower outer circumference of the lower member 14 and extend downward. extends to 2
It is fixed to one bracket 44 by a connecting member 46 consisting of a bolt and a nut.

As shown in FIGS. 1 and 2, the diagonal member 18 located immediately adjacent to the rotatably supported vertical member 16a is located inwardly from the connection point 30 between the vertical member 16a and the upper member 12. The vertical member 16a is joined to the upper member 12 at a distance, thereby causing the vertical member 16a to rotate inward.
Further, by attaching fasteners (not shown) to the ends of the diagonal member 18 and the upper member 12, the vertical members 16a can be hung on the fasteners of the diagonal member 18 or the upper member 12.

Unit 10 with pivotable longitudinal members 16a
As shown in FIG. 4, the steel beams 23 are spanned between the steel beams 23 in the following manner. First, remove the connectors 46 at the connection points 32 of the vertical members 16a, and
By pivoting the upper member 12 or the diagonal member 1
8, and then each end of the lower member 14 is placed and fixed through the webs 28 of the two steel beams 23 onto the angle irons 48 welded to the webs. Angle iron 4 at the end of the lower member 14
Other units 10 to be fixed and added to 8
In such a case, the units may be connected to each other in the same manner as in the above example. Thereafter, the vertical member 16a is returned to its original position and fixed with the connector 46. Vertical member 16a
may be fixed before the unit 10 is fixed to the angle iron 48.

In this way, by making at least one of the outermost vertical members 16 rotatable, each end of the lower member 14 can be moved to the steel beam 2 without being obstructed by the vertical members 16.
It becomes possible to pass through the web 23 of No. 3.

After the two units 10 are stretched parallel to each other at the same height between the steel beams 22 and 23, a plurality of steel pipes 50 for joists are placed between the lower members 14 of the units 10 and tied to the lower members 14 with wires. , and further steel pipe 5
Scaffolding boards 52 are laid out on top of 0 to serve as a scaffold. The steel pipe 50 for the joist, which is disposed between the connecting position of the lower member 14 and the diagonal member 18 and the connecting position of the lower member 14 and the vertical member 16, which are slightly apart, prevents movement of the unit 10 in the longitudinal direction. is prevented. Note that instead of arranging the steel pipes 50 for the joists one by one,
In the two steel pipes extending in the longitudinal direction of the unit 10,
An assembly (not shown) in which steel pipes are arranged and fixed at right angles to these and at intervals may be prepared in advance and placed between both units 10.

Further, as shown in FIG. 6, by using a unit 10 in which a portion of the upper member 12 is cut out, a T-shaped scaffold as shown in FIG. 7 can be constructed.

In this example, in order to supplement the strength of the unit 10 itself due to a part of the notch in the upper member 12, the distance between the vertical members 16 is narrowed, and diagonal members 18 arranged between the vertical members 16 are used.
In addition, a reinforcing material 54 having the same shape as the lower member is applied to the lower member 14 at the notch.

A unit 10 in which a part of the upper member 12 is cut out
In FIG. 7, a unit is placed on the upper end surface of the steel beam 22 and is arranged between the steel beams 22, and intersects at right angles to the lower portion 14 of the unit 10 provided with the reinforcing material 54 at the cutout portion. One end of the lower portion 14 of 10 is placed and fixed, and the other end is placed and fixed on an angle iron 48 provided on the web 28 of the steel beam 23.

In addition to being installed between the steel frames of the building, the unit 10 described above can be used as a passageway between sills, a communication passageway between ridges, and the like. Furthermore, it can be used not only to construct passageways and scaffolding, but also to construct storage stands for lightweight materials.

According to the present invention, since the unit can be made lightweight and strong, it can be transported by one worker when constructing a scaffold. Also,
Since the number of components of the scaffold is greatly reduced, it is possible to simplify the work for constructing and dismantling the scaffold, reducing labor, cost, and time, and making work at heights safer.

Furthermore, reducing the number of parts inevitably reduces falling and flying parts, thus contributing to the prevention of accidents caused by this.

Furthermore, according to the present invention, economic efficiency can be increased by reusing units between floors in the construction of a high-rise building or between construction sites.

[Brief explanation of the drawing]

Figure 1 is a front view of the unit according to the present invention, Figure 2 is a front view of the unit according to the present invention;
The figure is a front view of a unit with a long span.
The figure is a front view of the unit placed on a steel beam.
The figure is a front view of the unit inserted through the web of a steel beam, Figure 5 is a side view showing details of the connection of the pivotable longitudinal members, Figure 6 is a front view of another example of the unit, and Figure 7 7 is a plan view showing a state in which the unit shown in FIG. 6 is used. FIG. 10, 20: Unit, 12: Upper member, 14:
Lower member, 16, 16a: Vertical member, 18: Diagonal member, 3
0, 32: Connection points between upper and lower members and vertical members, 50: Steel pipe for joists, 52: Scaffolding board.

Claims (1)

[Claims for Utility Model Registration] (1) An upper member and a lower member that are parallel to each other, and the upper and lower members are spaced apart from each other in the longitudinal direction thereof, and the upper end and the lower end are connected to the upper and lower members. A construction passageway unit comprising: a plurality of vertical members each connected to the vertical members; and a plurality of diagonal members disposed between the vertical members and having upper and lower ends respectively connected to the upper and lower members. (2) At least one of the diagonal members is connected to the lower member at a position separated from a position where the lower member and the longitudinal member are joined, according to claim (1) of the utility model registration claim. The construction passage unit described. (3) At least one of the outermost vertical members has an upper end pivotally connected to the upper member, and a lower end removably connected to the lower member. Construction passage unit described in (1).