JPH0754480A - Prefabricated scaffolding and assembling and disassembling method thereof - Google Patents

Abstract

PURPOSE:To increase safety, by erecting standing frames connected by lateral beams horizontally jointing the upper ends of steel pipe studs to face each other and fitting scaffold plates and hand frames between the lateral beams of standing frames. CONSTITUTION:Standing frames connected by lateral beams horizontally jointing the upper ends of two steel pipe studs 11 are erected so as to face each other and scaffolding plates are extecded between the oppositely arranged standing frames to form a torii-shaped prefabricated scaffolding. And a joint part fitting a hand frame 6 is attached to a joint 4' for connection of the steel pipe studs 11 and the hand frame 6 is fitted to the top of standing frame and a baseboard 63 is fitted to the lower part thereof. Accordingly, a function of handrails as a prior service is provided to increase the safety.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame scaffold used as a support scaffold or a work scaffold installed along the outer wall of a building at a construction site such as civil engineering and construction, and a method for assembling and disassembling the scaffold.

[0002]

2. Description of the Related Art Log scaffolds made of cedar wood, which has been abundantly produced nationwide in Japan since ancient times, has been used as a work scaffold to be installed along the outer wall of buildings and constructions at construction sites such as civil engineering and construction. It has been. Bamboo is still used in Southeast Asian countries. Although these logs and scaffolding boards are not disposables each time, they are often worn out due to corrosion and breakage during use and storage, and today, when resource protection and global environmental protection are being called for, use is becoming less desirable. ing.

On the other hand, a steel pipe frame scaffold made of steel pipe is
It was developed early in Europe, which lacks suitable forest resources as a scaffold, and was introduced to Japan in the 1945s through the United States. In principle, it is used repeatedly, and nowadays it is generally used in most construction sites in Japan. It is used. Its structure has hardly changed since its introduction in Japan. An example is shown in FIG. 1 is the building frame,
11 is a pedestal, 12 is a lateral beam, 13 is a stiffener, 14 is a fastener, 2 is a scaffolding plate, 3 is a cross brace, 4 is a joint, and 5 is a jack base.

The building frame 1 is a basic component of this steel pipe frame scaffold, and is a "gate" composed of two steel pipe pedestals 11, a horizontal beam 12 horizontally connecting the upper ends thereof, and a stiffener 13 connecting them. It is a steel pipe frame body assembled in a square shape, and it is also called "Torii" due to its shape. Hereinafter, also in the present specification, a frame scaffold using this building frame is referred to as a "torii frame scaffold".

Taking the case of assembling the frame scaffolding on the wall surface of a building or the like, for example, the building frames 1, 1 are erected facing each other along the wall surface at a predetermined interval in the direction perpendicular to the wall surface, and the building frames 1 facing each other are set up. A cross brace 3 is attached between the pedestals 11 and 11 of FIG.
Scaffolding board (cloth frame with board) between the cross beams 12, 12 located at the upper end of
2 is crossed over to form a structural unit, which is designated by the symbol I as the first stage. On this, a second stage is installed in the same constitutional unit as indicated by symbol II, and the required number of stages is repeated to form a frame scaffold of a predetermined height. Connect the required number of structural units in the horizontal direction.

The cross brace 3 also has a function of a handrail for preventing a fall. To attach the cross brace 3,
Fasteners 14 are provided at appropriate places above and below the pedestal 11.
Further, the jack base 5 is inserted in the lower part of the pedestal 11 of the lowermost building frame 1, and the height of each pedestal 11 can be adjusted. Further, when connecting the building frame 1 in the vertical direction, a joint 4 for connection as shown in FIG. 7 is inserted and connected between the upper and lower pedestals 11, 11. Joint 4 is the upper and lower part 4
Pins 1 and 41 have a small diameter that fits within the steel pipe of the pedestal 11, and the middle portion 42 is thicker than this, and has a diameter approximately equal to the outer diameter of the steel pipe of the pedestal 11, and a pin clip for appropriately preventing disengagement. There is a small hole for inserting the etc.

In such a torii frame scaffold, when the lower scaffold is completed, the upper frame scaffold is assembled, and at the time of dismantling, the upper scaffold is sequentially disassembled. The work is carried out by standing on the scaffolding plate 2 at the top of the uppermost stage, and there is a problem that there is no pillar or handrail for safety around and there is a great risk of falling.

Therefore, as a framework scaffold for eliminating such a danger, for example, one shown in Japanese Utility Model Publication No. 1-18753 has been proposed. This will be described with reference to FIG. The building frame 1'used for this frame scaffold is a steel pipe frame body assembled in an H-shape by two stanchions 11, a horizontal beam 12 horizontally connecting the almost middle positions thereof, and a stiffening material 13, A frame scaffold using this building frame is called an "H-shaped frame scaffold" because of its shape.

When assembling this H-framed scaffolding, the procedure is basically the same as that of the Torii framed scaffolding.
1'standing facing upright, opposite building frames 1 ', 1'post 1
A cross brace 3 is attached between 1 and 11 to stabilize horizontally, and a scaffolding board (cloth frame with a board) 2 is provided between the cross beams 12 and 12 located between the opposing building frames 1'and 1 '. Is crossed over to form a structural unit, which is designated by the symbol I as the first stage. A second stage is installed on this with the same structural unit as indicated by symbol II, and the required number of stages is repeated to form a frame scaffold of a predetermined height. Connect the required number of structural units in the horizontal direction. Fasteners 14 are attached to appropriate positions in the vertical direction of the pedestal 11, and the cross brace 3 is attached to the lower part of the scaffolding plate 2 using this, and the handrail frame 6 is attached to the upper part of the scaffolding plate 2. Is attached.

As is clear from the figure, in the H-framed scaffolding, the scaffolding plate 12 is installed at a height approximately in the middle of each step, and the handrail frame 6 can be mounted immediately after the scaffolding plate 2 is crossed over. , It is possible to work safely even at the stage of assembling the upper frame scaffold. In this way, the H-framed scaffolding is also called “handrail leading type” because the handrail is installed prior to the assembly of the upper frame scaffolding, and it is welcomed by workers and the demand is increasing.

[0011]

By the way, this type of frame scaffold is a temporary material that is disassembled and repeatedly used as described above, and most of it is distributed as a leased product. However, it does not mean that the traditional torii frame scaffolding will be eliminated immediately,
The enormous amount of torii frame scaffolds produced so far will be used for the time being until their useful life is reached.

It is an object of the present invention to provide the torii frame scaffolding with the function of "handrail leading type" similar to the H frame frame scaffolding to improve safety.

[0013]

The framework scaffold of the present invention comprises two
Of the steel pipe pedestals are constructed by vertically arranging building frames that are connected by horizontal beams that connect the upper ends of the columns horizontally, and scaffolding boards are laid between the horizontal beams of the opposing building frames in the vertical direction. In a frame scaffolding that connects the required units in the horizontal direction, a joint part for attaching the handrail frame to the joint for connecting the steel pipe pedestal that connects the building frame in the vertical direction is provided,
The feature is that the handrail frame can be attached to the top of the building frame.

The method of assembling the frame scaffold of the present invention is 2
Of the steel pipe pedestals are constructed by vertically arranging building frames that are connected by horizontal beams that connect the upper ends of the columns horizontally, and scaffolding boards are laid between the horizontal beams of the opposing building frames in the vertical direction. In a frame scaffolding that connects the required units in the horizontal direction, a joint part for attaching the handrail frame to the joint for connecting the steel pipe pedestal that connects the building frame in the vertical direction is provided,
It is characterized in that a handrail frame is attached to the top of the building frame of this stage prior to the work of connecting the building frame of the upper stage.

Further, the method of disassembling the frame scaffold of the present invention is
A building unit composed of two steel pipe pedestals, which are vertically connected to each other by a horizontal beam connecting the upper ends of the steel pipes, and a scaffolding board is placed between the horizontal beams of the opposing building frames. Also, in the frame scaffolding that connects the required units in the horizontal direction, the work to disassemble the upper stage building frame by providing the joint part for attaching the handrail frame to the joint for connecting the steel pipe pedestal that connects the building frame in the vertical direction After that, the handrail frame on the top of the building frame of this stage is removed.

[0016]

[Operation] According to the present invention, even in a torii frame-framed scaffold, a handrail frame and pillars can always be provided around the uppermost scaffolding plate, so that even when performing work at the uppermost stage such as assembly and dismantling There is no danger and safety is improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described in detail with reference to FIGS. 1 is a front view of this embodiment, FIG. 2 is a partial perspective view corresponding to FIG. 1, FIG. 3 (a) is a front view of a joint 4'provided with a hook receiver, (b) is a similar plan view, and FIG.
(A) is a front view of the handrail frame attachment hook 61, (b) is a plan view of the same, FIG. 5 (a) is a front view of the latch 62, (b)
Is also a plan view.

1 and 2 show the conventional pedestal joint 4 at the upper end of the pedestal 11 of the lower torii-shaped building frame 1 which has been installed.
The joint 4'provided with a hook receiver is attached instead of, and the handrail frame 6 is fitted between the joints 4'and 4'of the adjacent building frames 1. Since the joint 4'can be attached in advance to the upper end of the pedestal 11 of the building frame 1 before installation, the handrail frame 6 is hung by a crane or the like, and the handrail frame attachment hook 61 at the lower end of the handrail frame is hooked. Installation of the handrail frame 6 is completed by putting it in the hook receiving part of the attached joint 4 ', and the torii-shaped building frame 1
The handrails were installed around the scaffolding board spanning the upper edge of the building, prior to the installation of the upper stage. After this,
When the upper (II) building frame 1 is installed, the latch 62 on the upper end of the handrail frame 6 is tilted down and fixed to the upper pedestal 11.

As shown in FIG. 3, the joint 4'is constructed by attaching hook receivers 43, which are joints, on both sides of an intermediate portion 42, which is the same as the pedestal joint 4 shown in FIG. . The hook receiver 43 has a shape into which the hook 61 shown in FIG. 4 fits, and its upper end is slightly widened so that it can be easily inserted. The handrail frame mounting hooks 61 are provided on both sides of the lower end portion of the handrail frame 6 as shown in FIG.
As shown in FIG. 3, the hook receiver 43 has a wedge shape with a sharp lower portion and is fitted into the hook receiver 43.

In this embodiment, the joint side is the hook receiving side and the handrail frame side is the hook side. However, the structure may be reversed, or the joining structure may be any other type. Latch 62
Are provided on both sides of the upper end of the handrail frame 6 as shown in FIG. 1, and are opened and closed as shown by the arrow with a pin at one end as a fulcrum,
As shown in FIG. 5, the other end is provided with R to open in two legs,
If there is a pedestal 11, the handrail frame 6 is fixed by falling over and fitting. Therefore, when the scaffolding board is laid over the top of the top of the building frame 1 to make the work floor, the handrail frame 6 can be installed by attaching the hook receiving joint 4'to the upper end of the pedestal 11 in advance. If you want to make this handrail safer, attach a short steel pipe with the same diameter as the pedestal 11 above the pedestal 11 using the joint with hook receiver 4'to make it a strut, and then use the latch 62 The handrail frame 6 may be fixed by tilting.

As shown in FIG. 1, the handrail frame 6 has a width wood 63 attached to the lower side and has a frame shape with high rigidity, so that the handrail frame 6 has a lightweight and highly safe structure. Also,
The handrail frame 6 can be easily removed if it is unnecessary after the assembling, or can be reattached during the disassembly. The frame scaffold of the present invention is different from the conventional torii frame scaffold shown in FIG. 6 in that the joint 4'and the handrail frame 6 are provided.
If only one is prepared, all other members can be used as they are.

[0022]

EFFECTS OF THE INVENTION According to the present invention, the biggest drawback of the torii frame scaffold currently used in large quantities in the country, the anxiety and danger in the uppermost scaffold, is corrected, and the assembly,
This has the effect of significantly improving safety in dismantling work.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a perspective view of an embodiment of the present invention.

FIG. 3A is a front view and FIG. 3B is a plan view of a joint according to an embodiment of the present invention.

FIG. 4A is a front view and FIG. 4B is a plan view of a handrail frame mounting hook in the embodiment of the present invention.

FIG. 5A is a front view and FIG. 5B is a plan view of a latch according to an embodiment of the present invention.

FIG. 6 is a perspective view of a torii frame scaffolding showing a conventional technique.

FIG. 7 is a front view of a joint in the related art.

FIG. 8 is a perspective view of an H-framed scaffold showing a conventional technique.

[Explanation of symbols]

 1, 1'Construction frame 11 Leg column 12 Cross beam 13 Stiffener 14 Fastener 2 Scaffolding plate 3 Cross brace 4, 4'Joint 41 Upper and lower part 42 Intermediate part 43 Hook receiver (joint part) 5 Jack base 6 Handrail frame 61 Hook 62 Latch 63 width timber

Claims (3)

[Claims] 1. A building frame (1) formed by connecting two steel pipe pedestals (11) with a horizontal beam (12) horizontally connecting the upper ends of the two columns to each other. In a framed scaffolding in which required units are connected in the vertical direction and the horizontal direction with structural units constructed by straddling a scaffolding plate (2) between cross beams (12), the building frame (1) is connected in the vertical direction. A joint part (43) for attaching the handrail frame (6) to the joint (4 ') for connecting the steel pipe pedestal (11), and the handrail frame (6) can be attached to the top of the building frame (1). Frame scaffolding characterized by. 2. A construction in which building frames, which are connected by horizontal beams horizontally connecting the upper ends of two steel pipe pedestals, are erected so as to face each other, and a scaffolding board is spanned between the horizontal beams of the opposing building frames. In a frame scaffolding that connects the required units vertically and horizontally, the joints for attaching the handrail frames to the joints for connecting the steel frame pedestals that connect the building frames in the vertical direction are provided with the joints in the upper stage. A method for assembling a frame scaffold, characterized in that a handrail frame is attached to the top of the building frame at the stage prior to the work of connecting the frames. 3. A structure in which two building frames made by connecting the upper ends of two steel pipe pedestals to each other by a horizontal beam horizontally connecting them are erected so as to face each other, and a scaffolding board is spanned between the horizontal beams of the opposing building frames. In a frame scaffolding that connects the required units vertically and horizontally, the joints for attaching the handrail frames to the joints for connecting the steel frame pedestals that connect the building frames in the vertical direction are provided with the joints in the upper stage. A method for disassembling a framed scaffold, characterized in that the handrail frame at the top of the current building frame is removed after the frame is dismantled.