JPH06272369A - Umbrella-type scaffold - Google Patents

Abstract

PURPOSE:To carry out assembly and disassembly work very simply and assemble a scaffold quickly even if it has high-rise steps. CONSTITUTION:A plurality of beam frame members 22 mounted to sides of a post member 12 with pin connection in a rollable and movable manner are provided radially, and ladder bars 18 are mounted to the post member 12. The post member 12 can be freely added, and the beam frame members 22 can be opened in a horizontal state by chains 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an umbrella-shaped scaffold, and more particularly to an umbrella-shaped scaffold having a structure suitable for use inside a vertically long structure such as a coal bunker of a power plant.

[0002]

2. Description of the Related Art Generally, a scaffold is constructed during an external or internal construction of a building. In this type of conventional scaffold, a single pipe is connected to each other along a work surface to form a framework. However, the horizontal pipe portion is used as a mounting beam for the scaffolding plate. This kind of scaffolding uses the same method for large buildings such as coal bunker for thermal power generation equipment.A horizontal beam is constructed for each work level, and scaffolding boards are attached to it. I'm trying to build a floor.

[0003]

However, in the conventional scaffold construction using a single pipe, a large amount of pipe material is used, so that a lot of time is required for assembly and disassembly, and the number of stages is increased. The higher the value, the more dangerous the work is.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a simple scaffold which, in order to eliminate the above-mentioned drawbacks, can be assembled and disassembled very easily and can be assembled quickly even when the number of steps is high.

[0005]

According to the present invention, the scaffolding inside the vertical bunker duct has been assembled with a single pipe, but it was confirmed that it takes days to assemble and disassemble, and as a means for solving this, an umbrella is used. It is configured as a simple scaffold that can be opened and closed freely.

That is, a plurality of beam aggregates that are movably mounted by undulation by pin connection are radially provided on the side of the column member, and a ladder bar is attached to the column member to achieve the above object. did.

[0007]

According to the above construction, the column member is set vertically,
The beam aggregate attached to this is lifted horizontally. For lifting support, a connecting member such as a chain may be used. Then, if necessary, column members having the same structure are vertically connected. This may be done by flange connection. By connecting the beam aggregates of each step to each other to maintain the horizontal state, the beam aggregate can be used as a beam for supporting the scaffolding plate. Therefore, for example, when installing inside a vertical bunker duct, since the beam aggregate can be freely opened and closed like an umbrella, the scaffold member can be easily carried in and out through a narrow opening, and not only assembling but also disassembling work. It can be done simply and quickly.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of an umbrella-type scaffold according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view of a main part showing a structure of an umbrella-shaped scaffold 10 according to an embodiment, and shows an example of construction inside a coal bunker of a thermal power plant. As shown in this figure, the umbrella-type scaffolding 10 of the embodiment includes a central column 12 arranged vertically along the center of the call bunker. The center column 12 has a structure in which a plurality of column pipes 14 are connected in the vertical direction, and therefore, connection flanges 16 are provided at both ends of each column pipe 14. Further, ladder bars 18 are provided at appropriate intervals on the pillar pipes 14 so that an operator can move up and down along the pillars.

As shown in FIG.
As also shown, the radiation bracket 20 is attached, and the beam aggregate 22 is attached to each bracket plate by pin connection. The beam aggregate 22 is composed of a long member having a length substantially close to the radius of the call bunker, and can be opened in an umbrella shape around the horizontal pin 24. That is, it is attached to the support pipe 14 so that it can be undulated. Suspended metal fittings 26 are provided on the upper and lower portions of the tip of the beam aggregate 22.
A chain 28 is connected to 6 to achieve a connection with the beam aggregates 22 attached to the upper and lower support pipes 14.

Further, a pair of fixing brackets 32 for fixing the scaffolding plate 30 are attached to the upper surface portion of the beam aggregate 22. This is formed by bending a U-shaped cross-section member into a dogleg shape, supports the lower surface of one end of the scaffolding plate 30, and fixes it with a tightening bolt 34. A nut 36 to which a bolt 34 is screwed is attached to the bracket 32 side. The distance between the pair of fixing brackets 32 is variable and can be adapted to the width dimension of the scaffolding plate 30 used (see FIG. 2 (3)).

The process of constructing the umbrella-type scaffolding 10 thus constructed inside the call bunker will be described with reference to FIG. A steel frame 42 is constructed around the call bunker 40. A temporary beam 44 is mounted on the upper portion of the steel frame 42, and the umbrella-shaped scaffolding 10 is set using this. That is, the wire is first lowered from the temporary beam 44, and the lower end of the wire is pulled out from the lower end of the bunker 40. Connect the strut pipe 14 to this wire, pull up the wire,
The support pipes 14 are successively added by the flanges 16. At this time, since the beam aggregate 22 is along the support pipe 14 by its own weight, as shown in FIG. 3 (1), this umbrella-type scaffold 10 is in the state of almost one central support column 12 from the narrow frontage to the inside of the bunker 40. You can put it in. Prop pipe 14
At the same time when the beam aggregate 22 is added, the beam aggregate 22 is connected by the chain 28. After the central column 12 formed by connecting the column pipes 14 reaches a predetermined height position, the chain 28 connecting the upper and lower beam aggregates 22 is pulled up as shown in FIG. The beam aggregate 22 is made horizontal. Since the beam aggregates 22 of each layer are connected to each other by a series of chains 28,
These are set to the horizontal state at the same time. The chain 28 is pulled up collectively on the side of the temporary beam 44, but of course, it is also possible to pull up in a plurality of stages at any place.

The chain 28 is fixedly connected using a temporary beam 44, etc., and the beam aggregate 22 is held in a horizontal state.
(3) Alternatively, as shown in FIG. 4, the scaffolding plate 30 is fixed to the scaffolding bracket 32 provided on the beam aggregate 22 of each layer. The scaffolding board 30 is previously pulled up to the upper part of the call bunker 40, and the operator uses the ladder bar 18 to descend to the uppermost beam aggregate 22 from the upper floor side, and the scaffolding board 30 is sequentially lowered to lower the beam aggregate 22. Attach to. After this is attached along the entire circumferential direction, handrails and other auxiliary members are assembled to complete the scaffold. Then, a ladder 46 for moving between the upper and lower floors is attached, and the above work is sequentially performed toward the lower floors.

According to such an embodiment, the basic framework of the scaffolding is completed by suspending the central support columns 12 and horizontally opening the beam aggregates 22 constituting each layer in a radial manner like opening an umbrella. Moreover, since the support pipe 14 is provided with flanges at both ends, the support pipes 14 can be successively added, so that the installation height can be arbitrarily adjusted. Further, since the umbrella-shaped scaffolding 10 can be easily put in and out from a narrow opening with the umbrella-shaped scaffolding 10 closed, it is very easy to assemble the scaffolding to a building such as a coal bunker 40 having a small frontage and a high height. Further, by making the beam aggregate 22 expandable, there is an effect that the shape of the call bunker 40 can be various shapes such as a round shape, a square shape, and a hexagonal shape.

In the above embodiment, the beam aggregates 22 are arranged in a uniform radial pattern on the entire circumference of the support pipe 14, but it is also possible to attach the beam aggregates 22 in an L-shape or other arrangement when viewed from the top. As a result, it can be applied to scaffolding assembly on the building exterior wall side.

[0016]

As described above, in the umbrella-type scaffold according to the present invention, a plurality of beam aggregates that are movably attached to the support member by pin coupling are provided radially on the side portions of the support member, and the support member is provided on the support member. Since it is configured with a ladder bar, it is possible to construct a scaffolding beam for a scaffolding board by simply erecting the pillar members and then horizontally expanding the beam aggregates.Therefore, the scaffolding construction work for large buildings and high-rise buildings can be performed. It can be performed easily in a short time, has a wide range of application and is very convenient, and also has a great effect in shortening working time and cost.

[Brief description of drawings]

FIG. 1 is a main part configuration diagram of an umbrella-type scaffold according to an embodiment.

FIG. 2 is a plan view, a side view, and a detailed view of a scaffolding assembly portion of a beam aggregate portion.

FIG. 3 is an explanatory diagram of scaffold assembly work of the embodiment.

FIG. 4 is a side view and a plan view of the completed scaffold.

[Explanation of symbols]

 10 Umbrella-type scaffolding 12 Central support 14 Supporting pipe 16 Connection flange 18 Ladder bar 20 Radiation bracket 22 Beam aggregate 24 Horizontal pin 26 Suspension metal 28 Chain 30 Scaffolding board 32 Scaffolding bracket 34 Tightening bolt 36 Nut 40 Call bunker 42 Steel frame 44 Temporary beam 46 ladder

Claims (1)

[Claims] 1. An umbrella-type scaffold, characterized in that a plurality of beam aggregates that are movably mounted by undulations by pins are radially provided on a side portion of a column member, and a ladder bar is attached to the column member.