JPH09310480A - Folding type scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a folding type scaffold utilizing existing built frames by connecting together vertical pillars of built frames positioning upper and lower through foldable joint hardwares so as to form a plurality of built frame connecting bodies, and connecting together a plurality of the built frame connecting bodies through a space holding pipe allowing folding and extending of the built frames. SOLUTION: A plurality of built frames 1 positioned upper and lower are connected together through joint hardwares 11 in order so that they can be straightly connected or folded, and hence a built frame connecting body 5 is formed. A plurality of the connecting bodies 5 are used so as to obtain the required number of spans, and they are connected together through a space holding pipe 6 allowing folding and extending of the built frames 1 so that the built frames 1 are opposed to each other at fixed spaces at extending them. The existing built frames are used as they are, and only by using the joint hardwares 11, the folding type scaffold of desired height and the number of spans can be easily constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable temporary frame scaffold, and more particularly to a scaffold which can be folded and stretched using an existing temporary scaffolding frame as it is.

[0002]

2. Description of the Related Art Temporary frame scaffolds used in various construction work and civil engineering work are constructed by connecting opposing construction frames with braces so that they stand upright at regular intervals in the horizontal direction and joints are used to construct the construction frames. To the upper part,
The scaffolding plate is constructed by installing scaffolding plates between the cross rails of the opposing building frames, but such scaffolding has a problem that it requires a lot of time and labor for assembling and disassembling.

Therefore, in recent years, a folding scaffold in which a frame scaffold of a required floor height is assembled and folded and stretched in several spans is proposed, for example, in Japanese Patent Publication No. 4-69265 and Japanese Patent Application Laid-Open No. 7-217187. ing.

This folding scaffold becomes flat and becomes bulky by folding, which is convenient for transportation and storage, and at the time of use, it only needs to be installed on the site and stretched.
There is an advantage that assembly and removal can be performed easily, efficiently and labor-savingly.

[0005]

However, the above-mentioned conventional folding scaffolding employs a special structure for the building frame, which is the main body of the scaffolding. Therefore, all the components including the building frame are newly added. It has to be manufactured, and there is a problem that the manufacturing cost of the entire scaffold is high.

[0006] Therefore, an object of the present invention is to provide a scaffolding which can construct a folding scaffold by using an existing building frame as it is and can realize the folding scaffold at low cost.

[0007]

In order to solve the above-mentioned problems, the invention of claim 1 is a joint hardware capable of folding the vertical pillars of the building frame positioned above and below in a straight line shape of the upper and lower building frames. By connecting so as to be freely connectable and foldable, a building frame connected body in which a plurality of building frames are sequentially connected is formed, and when the plurality of building frame connected bodies are stretched, the building frames face each other at a predetermined interval. , The construction is adopted in which the construction is connected by a space holding tube that allows folding and stretching of the building frame.

According to a second aspect of the present invention, in the first aspect of the present invention, one of the joint hardware has a large-diameter portion that is inserted into and fixed to a vertical column of the one-sided building frame and projects from an end of the vertical column. The joint pipe, the other joint pipe to be inserted into the vertical column of the other building frame, the tubular body that is externally fitted to the vertical column of the other building frame, and is fixed to the vertical column together with the other joint pipe, and this tubular body and one joint When the large diameter part of the pipe is connected, it consists of a tubular body and a hinge joint that connects one joint pipe so that it can be folded in two from a straight state. In this configuration, a coupling member that fits into the connector is provided, and the coupling member is coupled to the large diameter portion by a pin that can be inserted and removed.

Here, the existing building frame is used as it is, and the joint metal and the vertical column are connected with a pin by using the existing joint connection hole provided in the building frame as it is.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 11, in the existing building frame 1, upper portions of both side vertical columns 2 and 2 using steel pipes are connected by a horizontal rail 3 to form vertical columns 2 and 2. It is formed in a gate shape or a torii shape in which a reinforcing portion is provided at a corner portion of the horizontal rail 3, and the vertical columns 2 and 2 have pin holes 4 and 4 at their upper end portions and lower end portions, respectively, for coupling with known pipe joints. Although not shown in the drawings, the brace 5 is provided at the upper and lower end portions on the outer surface of the vertical column.
The connecting pin of a is projected.

The foldable scaffolding using the building frame 1 is
A plurality of building frames 1 to be positioned above and below are sequentially connected by a joint metal fitting 11 so that the upper and lower building frames 1 can be linearly connected and folded, thereby forming a building frame connection body 5, and this connection body 5 is required. Use multiple sets to obtain the desired number of spans,
In order to allow the building frames 1 to face each other at a predetermined interval when they are stretched, each building frame connecting body 5 is connected to each other by a space holding pipe 6 that allows folding and stretching of the building frames 1.

As shown in FIGS. 1 to 4, the joint hardware 11 is inserted into the upper end portion of the vertical column 2 of the lower building frame 1, and is connected by the pin 12 using the pin hole 4 of the vertical column 2. ,
One-sided joint pipe 14 having a large diameter portion 13 mounted on and protruding from the upper end of the vertical column 2, and the vertical column 2 in the upper building frame 1.
The other joint pipe 16 that is inserted into the lower end of the vertical column 2 and is joined with the pin 15 using the pin hole 4 of the vertical column 2 and the lower end of the vertical column 2 in the upper building frame 1 by the pin 15. A cylindrical body 17 that is connected to the vertical column 2 and the other joint pipe 16, and this cylindrical body 17 is one joint pipe 1
4 is fixed to the tip of the other joint pipe 16 and a hinge joint 18 that joins the large diameter portion 13 of 4 and connects the cylindrical body 17 and the one joint pipe 14 so as to be able to be folded in two from a straight line state. The connecting member 19 and the large-diameter portion 13 are connected to each other in a non-foldable manner by a pin 20 that can be inserted and removed in the radial direction.

Large diameter portion 1 of the one side joint pipe 14
3 has an outer diameter substantially the same as that of the vertical column 2, and since the vertical length is equal to the large diameter portion in the conventional pipe joint, the vertical column 2 and the vertical column 3 are provided with a conventional diameter. Ensure similar spacing.

The other joint pipe 16 is a vertical column 2.
The lower end projects slightly from the lower end and fits into the large-diameter portion 13, and the coupling member 19 fixed to the pipe 16 projects so that the lower end fits into the large-diameter portion 13, and the hinge joint 18 pivots. When bending both joint pipes 14 and 16 around the fulcrum, in order to avoid interference with the large-diameter portion 13, the side edge on the side opposite to the bending direction is a cut surface 21 and for joining with the large-diameter portion 13 An insertion hole 22 for the pin 20 is provided.

The cylindrical body 17 has an inner diameter that fits over the large-diameter portion 13, and the lower end portion of the cylindrical body 17 is detachably attached to the upper end of the large-diameter portion 13 by means of a pin 15 that can be inserted and removed. Combined with.

In order to assemble a scaffold using the joint metal fitting 11, the joint metal fitting 11 is attached by inserting one joint pipe 14 at the upper end of the vertical column 2 of each building frame 1 and connecting with the pin 12. , The building frames 1 of which the number of spans plus one are arranged in a line in a plane, and the joint hardware 11 of each building frame 1 has the other joint 16 bent in the direction of the vertical column 2 Frame 1
Lower end of the joint or hinge joint 18 of the joint hardware 11
Using the space holding tube 6 and the free clamp and pivot bolt,
For example, the building frames 1 are connected so that the distance between them is 1,829 mm.

Next, the second-stage building frame 1 is placed on the lowermost building frame, and the lower end of the vertical column 2 is inserted between the other joint pipe 16 and the cylindrical body 17 fitted onto the other joint pipe 16, and the pin is inserted. Combine the three by 15.

In this way, if the building frames 1 for a predetermined number of steps are sequentially connected by the same method as described above, each building frame connecting body 5 becomes
As shown in Fig. 10 (A), when the building frame 1 is in a flat folded state in which the orientations of the building frame 1 are alternated and the scaffolding is not further added to the uppermost part, the uppermost joint hardware is unnecessary, If you want to attach a handrail to the top, attach it at this time.

To assemble the above-mentioned scaffold, as shown in FIG. 10A, a hanging jig 7 is hung on a crane hook, and a wire netting hook 8 attached to the jig 7 is attached to the uppermost building frame 1 5 to FIG. 7 and FIGS. 10 (B) and 10 (C), the building frame 1 on the uppermost stage is centered on the pivot point of the hinge joint 18 of the joint hardware 11 when it is lifted by one step height. The building frames 1 that stand upright and face each other are joined by a cloth frame, braces 5a, and the like.

Further, when it is lifted by a height corresponding to one step, as shown in FIG. 11, the second-stage building frame 1 is erected from the top, and the joint metal fitting 11 becomes a linear shape, and the connecting member 19 is placed in the large diameter portion 13. It is fitted, the lower end of the upper vertical column 2 is placed on the upper end surface of the large diameter portion 13, the connecting member 19 and the large diameter portion 13 are connected by the pin 20 to make them unfoldable, and the second-stage facing building frame from the top. 1 are connected by a cloth frame or brace 5a.

In this way, if each stage of the building frame 1 is hoisted and the joint hardware 11 is linearly joined, the building frames facing each other and the braces are joined, as shown in FIGS. 8 and 9. All stages can be assembled.

If the cloth frame, the brace, and the curing sheet between the scaffolds after assembling are temporarily provided on the scaffolding, the material does not have to be lifted up when the scaffolding is performed later.
In addition to these, it is possible to attach a handrail to the end building frame, incorporate a staircase frame, attach a curing sheet, attach a fall prevention shelf, and attach a signboard or the like.

At the foot of the position where the scaffold assembled as described above is installed, the base jack is installed at a predetermined position so as to reach a predetermined level, or the bottommost building frame is assembled by a conventional method. It is sufficient to install scaffolds on top of these, and if a high temporary scaffold is required, it can be done by adding joint hardware to the scaffolds in sequence upward, and disassembling the scaffolding can be done by the above-mentioned assembly. Go in the opposite direction and fold it.

Next, FIGS. 12 to 15 show different examples of joint hardware used for assembling scaffolds,
The same end as that of the first embodiment is denoted by the same reference numeral and will not be described. In the figure, a large diameter portion 13 is provided at the upper end of one joint pipe 14 and a large diameter portion 23 is provided at the lower end of the other joint pipe 16, and both pipes 14 and 16 are hinged at the large diameter portions 13 and 23. The two joint pipes 14 and 16 are connected to each other so that they can be folded in two in a straight line. The fitting member 24 and the large-diameter portion 23 are fitted in the portion 23 and are joined by the pin 20.

Joint hardware 11 shown in this other example
In the same manner as the first embodiment, the building frames can be connected to form a scaffold that can be folded and stretched freely.

Next, FIG. 16 to FIG. 24 show the spacing tube 6
An example of a joint metal fitting utilizing the above is shown, and a hinge 2 protruding vertically is provided at a position provided with an interval equal to the span in the length direction of the interval holding tube 6 having a length corresponding to a plurality of spans.
Projections 5 and 25 are provided, and joint hardware 11a is attached to the upper and lower ends of both hinges 25 and 25.

The joint metal fitting 11a is inserted into the vertical column 2 and fixed with a bifurcated metal fitting 26 at the end of a joint pipe 14a which is joined by a pin 12, and the bifurcated metal fitting 26 is hinged 2.
5, the joint pipe 14a is freely foldable in parallel with the hinge 25 in parallel with the spacing pipe 6 by connecting the fitting portions of the joint pipe 14a with the pin 27.

The tip of the hinge 25 and the bifurcated metal fitting 26 are provided with square holes 28 and 29 which are aligned with each other when they are made straight, and the pin 30 can be inserted into and removed from the square holes 28 and 29. Thus, the hinge 25 and the joint hardware 11a are connected in a straight line.

The spacing tube 6 and the joint metal 11a
In order to assemble the scaffold using, the upper end of the first stage building frame is connected to the joint pipe 14a connected to the lower hinge 25 of the lowest spacing pipe 6, and the joint hardware 11a of the upper hinge 25 of this spacing pipe 6 is joined. Joint pipe 1
4a is connected to the lower end of the second-stage building frame 2, and the upper end of the building frame 2 is connected to the lower joint pipe 14a of the second-stage spacing pipe 6.
To the building frame 2 by repeating the above process.
Are alternately folded, and the upper and lower spacing tubes 6 are displaced by one span in the lengthwise direction to complete the assembly.

As in the case of the first embodiment, assembling may be performed by hoisting in order from the upper building frame with a crane or the like, as shown in FIGS. 19 to 24. In, the hinge 25 and the joint pipe 14a are connected in a linear state by inserting the pin 30 into the square holes 28 and 29, whereby the scaffold is assembled. The folding and disassembling may be performed in the reverse order of the assembling.

[0032]

As described above, according to the present invention, the existing building frame can be used as it is, and the folding scaffold can be configured without any processing. Therefore, only the joint hardware can be manufactured. The formula scaffold can be assembled at low cost.

Further, the joint frames are used to sequentially connect the building frames to form a building frame connected body, and the plurality of connected bodies are connected to each other by the interval holding pipe at a constant interval. Therefore, the desired height and the number of spans can be obtained. The folding scaffold can be easily constructed.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a first example of a joint metal piece in a linear connection state.

FIG. 2 is a front view showing a bent state of the same.

FIG. 3 (A) is a vertical sectional front view of a one-side joint pipe,
(B) Side view

FIG. 4A is a vertical sectional front view of the other joint pipe,
(B) Side view

FIG. 5 is a front view showing the process of stretching the scaffold using the joint hardware of the first example.

FIG. 6 is a perspective view of the same.

FIG. 7 is an enlarged front view of the main part of the same.

FIG. 8 is a perspective view of the stretched scaffold.

FIG. 9 is a front view of the above.

10 (A) to (C) are explanatory views showing the order of stretching the scaffold.

FIG. 11 is an explanatory view showing the process of stretching the scaffold.

FIG. 12 (A) is a vertical cross-sectional view showing another example of the joint hardware in a linearly coupled state, and FIG. 12 (B) is a vertical sectional side view of the same.

FIG. 13 is a vertical cross-sectional view showing the same folded state as above.

FIG. 14 is a side view of the above.

FIG. 15 is an exploded perspective view of the above.

FIG. 16 is a vertical cross-sectional view showing a linear connection state of a joint metal fitting using a space maintaining tube.

FIG. 17 is a partially cutaway enlarged front view showing the same bent state as above.

FIG. 18 is an exploded perspective view of the above.

FIG. 19 is a front view showing the process of stretching the scaffold.

FIG. 20 is a perspective view of the above.

FIG. 21 is an enlarged front view of the main part.

22A to 22C are explanatory views showing the order of stretching the scaffolds.

FIG. 23 is an explanatory view showing the process of stretching the scaffold.

FIG. 24: Front view of stretched scaffold

[Explanation of symbols]

 1 Building Frame 2 Vertical Column 6 Spacing Pipe 11 Joint Hardware 13 Large Diameter Part 14 One Joint Pipe 16 Other Joint Pipe 17 Cylindrical Body 18 Hinge Joint 19 Coupling Member

Claims (2)

[Claims] 1. A plurality of building frames are connected in sequence by vertically connecting the vertical columns of the building frames with a joint hardware that can be folded in two so that the upper and lower building frames can be linearly joined and folded. A foldable scaffold in which a building frame connection body is formed, and the plurality of building frame connection bodies are connected to each other by a space holding pipe that allows folding and stretching of the building frame so that the building frames face each other at a predetermined interval during stretching. 2. A joint metal fitting is inserted and fixed in a vertical column of one building frame, and one joint pipe having a large diameter portion protruding from an end of the vertical column and a vertical column of the other building frame are provided. The other joint pipe to be inserted, a tubular body externally fitted to the vertical column of the other building frame, and fixed to the vertical column together with the other joint pipe, and this tubular body and the large-diameter portion of the one joint pipe are joined to form a tubular body. A hinge joint for connecting one joint pipe in a straight line so that the joint pipe can be folded in two, and at the tip of the other joint pipe, there is provided a joint member which fits into the large diameter portion when linearly formed with the one joint pipe, and this joint member The folding scaffold according to claim 1, wherein the large-diameter portion is coupled with a removable pin.