JPH08284398A - Hanging scaffold - Google Patents

Abstract

PURPOSE: To obtain an easily folding type hanging scaffold for assembling and disassembling, by arranging scaffold boards between erected frames in which a plurality of standards are rotatably connected and putlogs are laid between respectively facing standards and arranging bracings so as to avoid crossing joints of the erected frames. CONSTITUTION: A plurality of standards 21, 21 are rotatably connected and putlogs 22 are laid between the oppositely facing standards to constitute erected frames 20, 20. Scaffold boards 40, 40 are arranged between the putlogs 22 of the oppositely facing frames and bracings 30 are arranged at the positions avoiding the connected parts of the oppositely facing frames. The uppermost frame 20 is rotatably connected to a frame base 50. It is preferable that the frame 20 is pivotted so as to be able to fold to a specified direction of the scaffold board 40. A hanging scaffold constituted to be folded in such a way is transferred to the site in the folded state. The frame base is lifted by a crane or the like. The frames 20 and the scaffold boards 40 connected to the frame base 50 are lifted in turn from the upper members to the lower members. The scaffold is formed by positioning vertically and horizontally due to its own weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension scaffolding device used as a temporary scaffolding in various construction and construction sites.

[0002]

2. Description of the Related Art A temporary scaffolding device constructed by assembling steel units is dangerous in assembling work at a high place, and the longitudinal frame members are apt to buckle in proportion to the stacking height. It is unsuitable as a high-rise work scaffold for high-rise buildings and towers because it requires a lot of time and labor for assembling and disassembling. At present, as a work platform for aerial work, a gondola method or a hanging scaffold method in which a gondola or a steel scaffolding device is suspended in a building so that it can be lifted and lowered is proposed.

[0003]

Problems to be Solved by the Invention The scaffolding device of the above-mentioned system has the following problems. <B> With the gondola method, the work area from a single gondola is narrow, so it is not necessary to perform frequent lifting operations as the work area progresses, but it is also possible to operate multiple floors of a building simultaneously. There is a difficulty that you cannot work. In addition, the drooping device for the gondola is also large-scale, and the mobility to other side surfaces of the building is poor, and when constructing multiple side surfaces of the building, it is necessary to install the gondola on a side-by-side basis. <B> In the case of the suspended scaffolding method, the work range is widened due to the height over multiple floors, but each component of the scaffolding device needs to be attached and detached individually, so many scaffolding devices are still assembled and disassembled. It takes time and effort. <C> The gondola method and hanging scaffolding method for scaffolding outside the building are devices in which a hanging position is provided at the top of the building, and the hanging position cannot be moved upward. When the building to be drooped is completed, as in the case of repairing the outer wall of an existing structure, there is no need to move the drooping position, so there is no particular problem, but for example, the scaffolding position in parallel with the building height of the structure under construction. When raising, the drooping position must also be raised, and it is difficult to deal with it by the conventional method. <D> In addition, a foldable scaffolding device that can fold the frame in consideration of transportability and storage space has been proposed, but there is still room for improvement because components other than the frame still require attachment / detachment. There is.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to provide a suspension scaffolding device as described below. A suspension scaffolding device that can easily move up and down the scaffolding. Assembling / disassembling work can be done easily by removing detachable parts.
Hanging scaffolding equipment. A suspension scaffolding device suitable for scaffolding for working in high places. A suspension scaffolding device that can regulate the folding direction to the same direction.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a folding type scaffolding device, in which a plurality of vertical members are rotatably connected to each other, and a horizontal frame member is installed between facing vertical members. In the suspension scaffolding device, the scaffolding board is installed between the horizontal members of the building frames facing each other, and the braces arranged at positions avoiding the connecting portions of the building frames facing each other. is there. In addition, in the folding type suspension scaffolding device, a plurality of vertical members are rotatably connected, and between a building frame in which a horizontal member is installed between facing vertical members and between horizontal members of the facing building frames. A suspension scaffolding device comprising an erected scaffolding plate and braces arranged at positions avoiding the connecting portions of the opposing building frames, and the uppermost building frame being rotatably connected to a pedestal. Is. Also,
In the above-mentioned hanging scaffolding device, side plates are attached to both sides of the vertical member, and the vertical members and the side plates are rotatably connected by connecting pins, and the vertical members and the side plates are provided with a rotation direction on the opposing surfaces of the vertical members and the side plates. The suspension scaffolding device is characterized in that it is formed with a protrusion having a stopper surface for regulating each. Further, in any of the above-mentioned hanging scaffolding devices, the hanging scaffolding device is characterized in that the building frame is pivotally supported so as to be bendable in a specific direction of the scaffolding plate.

[0006]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. <B> Suspension Scaffolding Device FIG. 1 shows a perspective view of the suspension scaffolding device with some parts omitted, FIG. 2 shows a side view of the suspension scaffolding device hanging from a building 10, and FIG. 3 shows a side view in a folded state. Indicates. The suspension scaffolding device includes a plurality of foldable construction frames 20, a plurality of braces 30 interconnecting the construction frames 20 and 20, and a plurality of scaffolds horizontally extending between the construction frames 20 and 20. The plate 40 is used as a basic unit, and a plurality of these units are continuously arranged in the vertical and horizontal directions. The number of units that make up the suspension scaffolding device is appropriately selected and determined according to site conditions and work applications.
The brace 30 and the scaffolding plate 40 are attached to the foldable building frame 20 in advance in order to save the labor of attachment and detachment. A pedestal 50 having a rigid structure is rotatably connected to the uppermost part of the suspension scaffolding device, and the pedestal 50 is supported by a suspension scale 11 such as a steel frame that projects outward from the building 10 side. The device is hanging.

<B> Building frame The building frame 20 has a development shape of a ladder shape, and a scaffolding board 40 is horizontally installed between a plurality of vertically supporting members 21 which are rotatably connected and vertically facing members 21 and 21. It consists of a horizontal member 22 made of steel pipe to be attached. As shown in FIGS. 3 to 5, the vertical member 21 is made of a lightweight plate such as aluminum, and a pair of side plates 23 and 23 is arranged between the vertical members 21 and 21 that are abutted to each other and is connected to the overlapping portion of both plates 21 and 23. The pins 24 are inserted to rotatably connect the vertical members 21 and 21, and the both ends of the horizontal member 22 also have a pair of curved side plates 2.
The vertical members 21 and the pair of side plates 25 are rotatably connected to each other by sandwiching the connecting bolts 26 between the pair of side plates 25, 25. And the horizontal members 22 are integrally connected by the through bolts 27, and the building frame 20 is directed in the transverse direction of the scaffold 40 as shown in FIG.
In addition, the pair of vertical members 21 and 21 forming each building frame 20 can be folded in the same direction.

<C> Brace Brace 30 is a reinforcing member that axially supports the middle of two rods, and is installed in multiple stages on opposite sides of the building frames 20, 20 facing each other. Brace 30, vertical member 21 facing each other,
The reason why the connecting portion 21 is arranged at a position avoiding it is to prevent the folding of the building frame 20. Building frame 2 facing each other
A handrail 32 is attached to one side of the buildings 0 and 20 as needed. As a means for installing the brace 30 or the handrail 32, for example, as shown in FIG. 6, a hooking pin 33 protruding on the side surface of the vertical member 21 is fixed, and a hole 34 formed at the end of the brace 30 or the handrail 32 is provided. A latching structure can be adopted in which the latching pin 33 with a stopper 35 that can freely move in and out is inserted. In addition, when there is not enough thickness to fix the latching pin 33 to the side surface of the vertical member 21, the ends of the braces 30 and the handrails 32 are formed into a bifurcated shape, and the vertical member 21 is attached so as to be sandwiched. For example, various known hooking means can be adopted.

<D> Scaffolding plate The scaffolding plate 40 is a plate made of a lightweight material made of aluminum, and a plurality of hooks 41 are attached to a pair of opposite end faces of the scaffolding plate 40, and the scaffolding plate 40 is fitted to the horizontal member 22. . The suspension scaffolding device is assembled in advance instead of attaching and detaching the above-mentioned braces 30 and scaffolding plate 40 each time it is assembled and disassembled.

[0010]

Next, a method of using the suspension scaffolding device will be described. <A> Assembly of scaffolding The suspended scaffolding device in a folded state as shown in FIG. 3 is transported to the site, and the gantry 50 is lifted by a lifting device such as a crane or a hoist (not shown). The building frame 20 and the scaffolding board 40 connected to the gantry 50 are pulled up in order from the top. Each building frame 20 is bent by pulling up and turns in the vertical direction by its own weight, and each braces 30, 30 installed between the building frames 20, 20 also stand up following the building frame 20. The scaffolding plate 40 installed between the horizontal members 22 of the building frame 20 facing each other is pulled upward while maintaining the horizontal state. When the suspension scaffolding device is extended in the vertical direction, it is only necessary to separately connect the suspended scaffolding device below the suspended suspension scaffolding device on the ground side. When the suspension scaffolding device is lifted to a predetermined height, the suspension scale 11 is pushed out from the middle floor of the building 10 until it abuts the lower surface of the pedestal 50 as shown in FIG. . The hanging scaffolding device is subjected to a predetermined work by restraining the tilting and lateral movement of the hanging balance 11 by detachably fixing the hanging balance 11 to the building 10 with bolts or arranging a retaining wire.

<B> Lifting As shown in FIG. 7 (A), a lifting scale 14 equipped with a simple lifting machine 12 such as an electric chain block is installed on the upper floor where a hanging scale 11 for suspending a hanging scaffolding device is installed. The wire 13 extending from the simple lifting machine 12 is connected to the pedestal 50 of the suspension scaffolding device and pulled up. Of course, the pull-up scale 14 is temporarily fixed to the building 10 in order to prevent it from falling over or moving. When the hanging scaffolding device is lifted by the simple lifting machine 12, the hanging balance 11 is extracted, and the extracted hanging balance 11 is moved to the upper floor of the building 10 as shown in FIG. Use to raise the drooping position. After the suspension scaffolding device is replaced with the suspension scale 11, the lifting scale 14 is removed together with the simple lifting machine 12, and the suspension scaffolding device is further moved to and installed on the upper floor in preparation for the next lifting of the suspension scaffolding device. As described above, the suspension scaffolding device is pulled up above the building 10 while the suspension balance 11 and the lifting scale 14 are alternately rearranged.

<C> Disassembly When the use of the suspension scaffolding device is completed, the above-mentioned lifting scale 14
The pedestal 50 is lowered while being hung by the simple lifting machine 12 or another crane. The folding scaffolding device having a folding structure is compactly folded in the order of landing on the ground as shown in FIG. 3, and the dismantling work is completed. When disassembling the suspension scaffolding device, it is not necessary to remove the braces 30 and the scaffolding plate 40, and they can be folded while being attached.

[0013]

Embodiment 2 FIGS. 8 to 10 show another embodiment in which the folding direction of the building frame 20 is restricted to a specific direction. In the description of this embodiment, the same parts as those in the first embodiment will be described with the same reference numerals. FIG. 8 shows the vertical members 21 and 21 that constitute the building frame 20.
1 is a perspective view of the connecting portion 1 of FIG. 1, and the connecting portion of the vertical members 21 and 21 is required to allow rotation within a range of 90 degrees between the horizontal position and the vertical position. Therefore, the protrusions 21b and 23b are respectively formed on a part of the periphery of the hole 21a formed at the end of each vertical member 21 and a part of the periphery of the hole 23a formed at the end of each side plate 23.
The side plates 23 are formed on both sides of the vertical members 21 and 21, and the connecting pins 24 are inserted and connected. These protrusions 21b and 23b are respectively formed at positions where they do not collide with each other. For example, the protrusion 23 on the side plate 23 side is formed.
b has a shape in which the tubular body is divided into two along the longitudinal direction of the side plate 23, and stopper surfaces 23c and 23d are formed at the upper and lower ends thereof, and the projection 21b on the vertical member 21 side has a fan-shaped cross section. Stopper surfaces 21c and 21d are formed at both ends. With this configuration, the vertical member 21 positioned in the vertical direction allows only the rotation of the side plate 23 within the range in which the stopper surfaces 21c and 21d come into contact with the stopper surfaces 23c and 23d, and the rotation is outside this range. You can restrain the movement.

[0014]

Third Embodiment FIGS. 11 and 12 show another embodiment in which the folding direction of the building frame 20 is restricted to a specific direction. In this embodiment, one side of the facing end face of each vertical member 21, 21 is formed as an arc surface 25, and a rectangular plate 26 is positioned between the side plates 23, 23, and each vertical member 21, 21 is positioned with respect to the side plates 23, 23. The structure allows the rotation in the direction in which the arc surface 25 is formed, and prevents the rotation in the direction in which the arc surface 25 is not formed. The present embodiment has an advantage that the processing is simple as compared with the second embodiment. Incidentally, reference numeral 27 is a penetrating pin for preventing the fall of the rectangular plate 26.

[0015]

Since the present invention is as described above, the following effects can be obtained. <a> The conventional temporary scaffolding and suspension scaffolding device require a lot of time and labor for assembling and disassembling because it is necessary to attach and detach the scaffolding board and the braces every time assembling and disassembling. On the other hand, in the present invention, since the scaffolding plate and the braces are assembled so as not to interfere with folding, the attaching / detaching operation as in the conventional case is unnecessary, and the assembling work and the disassembling work of the hanging form device can be easily performed. <B> The folding scaffolding devices that have been proposed so far have the structure that the braces are attached or detached each time they are folded, or the braces are omitted from the beginning, as a countermeasure against this because the presence of the braces inhibits the folding. However, there has been a problem in that the number of man-hours required for the attachment / detachment operation and the reduction in strength are reduced. According to the present invention, since the braces are arranged at positions avoiding the connecting portions of the vertical members constituting the building frame, it is possible to fold the suspension scaffolding device while avoiding a decrease in its strength.

[Brief description of drawings]

FIG. 1 is an overall view of a suspended scaffolding device according to a first embodiment with a part omitted.

[Fig. 2] Side view of a suspension scaffolding device suspended from a building

FIG. 3 is a side view of the suspended scaffolding device in a folded state.

FIG. 4 is a vertical sectional view of a connecting portion of a vertical member.

FIG. 5 is a vertical cross-sectional view of a mounting portion of a horizontal member.

FIG. 6 is a perspective view showing a structural example in which the braces are attached to the vertical members.

FIG. 7 is an explanatory diagram for explaining a lifting operation of the suspension scaffolding device.

FIG. 8 is an explanatory view of another embodiment for restricting the connecting direction of the building frames in a specific direction.

FIG. 9 is a conceptual diagram showing the relationship between the protrusions when the building frame is vertically positioned.

FIG. 10 is a conceptual diagram showing the relationship between the protrusions when the building frame is bent.

FIG. 11 is an explanatory view of another embodiment for restricting the connecting direction of the building frames in a specific direction.

12 is a longitudinal sectional view of the embodiment shown in FIG.

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroshi Kusaka 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (72) Inventor Junichi Mitsunaga 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (72) Inventor Junichi Watanabe 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (72) Inventor Shuichi Ueno 1-1-16 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Inside the corporation

Claims (4)

[Claims] 1. A folding-type hanging scaffolding device, wherein a plurality of vertical members are rotatably connected to each other, and a horizontal frame is installed between facing vertical members, and a horizontal frame of the facing vertical frames. A suspending scaffolding device comprising a scaffolding board erected between timbers and braces arranged at positions avoiding connecting portions of building frames facing each other. 2. A folding type suspension scaffolding device, wherein a plurality of vertical members are rotatably connected to each other, and a horizontal frame is installed between the vertical members facing each other, and a horizontal frame of the building frames facing each other. It consists of scaffolding boards erected between timbers and braces arranged at positions avoiding the connecting parts of the opposing building frames, and the uppermost building frame is rotatably connected to the frame, Hanging scaffolding equipment. 3. The vertical member according to claim 1 or 2, wherein side plates are attached to both sides of the vertical member, the vertical member and the side plate are rotatably connected by a connecting pin, and the vertical member is provided on an opposing surface of the vertical member and the side plate. A suspension scaffolding device, characterized in that it is formed with a projection body having a stopper surface for restricting the rotation direction of the side plate and the side plate. 4. The hanging scaffolding device according to claim 1, wherein the building frame is pivotally supported so as to be bendable in a specific direction of the scaffolding plate.