JP2023059544A - scaffolding - Google Patents

Abstract

To improve the support strength and connection strength of an inclined member that supports a horizontal beam member pivotally supported on the upper portion of a pedestal in a horizontal position.SOLUTION: Provided is a scaffolding in which the upper portions of a pair of left and right leg frames 6 are connected by a pair of front and rear horizontal beam members 7 that can be folded from the unfolded horizontal position, each of the left and right leg frames 6 connects a pair of front and rear pedestals 8 with an upper scaffolding plate engaging member 9 and a plurality of intermediate lateral members 10, the front and rear horizontal beam members 7 are pivotally supported on the upper portion of the pedestal 8 via a pivot shaft 11, and the horizontally positioned horizontal beam member 7 and the leg frame 6 are connected by an inclined member 12. The horizontal beam member 7 is pivotally supported via the pivot shaft 11 on the upper portion of the pedestal 8 inside the outer end in a horizontal position. The inclined member 12 is arranged on the opposite surface side of each of the front and rear pedestals 8 in which the upper end is connected to the outer end of the horizontal beam member 7 in a horizontal position via a connecting pin 13, and the lower end is connected to the intermediate lateral member 10.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffolding frame used for high-place interior work.

As disclosed in Patent Document 1, a pair of left and right leg members having a predetermined front-to-rear width and a pair of front and rear leg members connecting the upper ends of the left and right leg members are used as an aerial workbench for high-place interior work, as disclosed in Patent Document 1. The scaffolding comprises a gate-shaped base having horizontal members, at least one detachable scaffold board disposed between left and right leg members, and detachable handrails disposed at the front and rear edges of the scaffold board. , the horizontal member is composed of a left horizontal member and a right horizontal member that can be folded so that the upper parts face each other, and the left end of the left horizontal member and the right end of the right horizontal member are the upper ends of the left and right leg members The scaffolding board consists of a left scaffolding board and a right scaffolding board which can be folded so that the lower parts face each other (Claim 1).

In the aerial work platform, the outer ends of the front and rear horizontal members are pivotally supported on the upper portions of the leg members via pivot shafts, and the portion inside the outer end of the horizontal horizontal member and the leg members are inclined members. The inclined member is arranged on the front-rear direction outer surface side of the leg member.

JP-A-10-266552

In the prior art, the slant member can support the horizontal member in a horizontal position. However, since the inner portion of the horizontal member is supported from the outer end of the horizontal member, it is difficult to increase the support strength of the slant member. is arranged on the outer surface side of the leg member in the front-rear direction, it is easy to handle, but it is difficult to increase the strength of connection between the cross member and the leg member.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a scaffolding stand capable of solving the problems of the prior art.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a scaffolding system capable of improving the support strength and connection strength of inclined members that horizontally support horizontal beams pivotally supported on the tops of pedestals.

A specific means for solving the problem in the present invention is that the upper portions of a pair of left and right leg frames 6 are connected by a pair of front and rear horizontal beam members 7 that can be folded from a developed horizontal posture, and each of the left and right leg frames 6 is a pair of front and rear legs. The pedestal 8 is connected by an upper scaffolding board engaging member 9 and a plurality of intermediate horizontal members 10, and each front and rear horizontal beam 7 is pivotally supported on the upper part of the pedestal 8 via a pivot shaft 11, A scaffolding frame that connects a horizontal beam member 7 and a leg frame 6 with an inclined member 12,
The horizontal beam member 7 is pivotally supported on the upper part of the pedestal 8 inside the outer end in a horizontal posture through a pivot shaft 11, and the inclined member 12 is arranged on the opposite surface side of each of the front and rear pedestals 8, and the upper end is It is characterized in that it is connected to the outer end of the lateral beam member 7 in a horizontal posture via a connecting pin 13 and the lower end is connected to the intermediate lateral member 10 .

According to the present invention, the horizontal beam member 7 is pivotally supported on the upper part of the pedestal 8 inside the outer end in a horizontal position via the pivot shaft 11, and the inclined member 12 is arranged on the opposite surface side of each of the front and rear pedestals 8. Then, the upper end of the inclined member 12 is connected to the outer end of the lateral beam member 7 in the horizontal posture via the connecting pin 13, and the lower end of the inclined member 12 is connected to the intermediate lateral member 10, thereby making the lateral beam member 7 horizontal. The supporting strength of the inclined member 12 to be supported can be increased, and the connection strength between the pedestal 8 and the horizontal beam member 7 and the inclined member 12 can be increased.

It is a perspective view of the whole scaffolding platform device showing an embodiment of the present invention. It is a front view of the whole scaffolding device. It is a side view of the whole scaffolding device. It is a top view of the whole scaffolding device. It is a bottom view of the whole scaffolding device. It is an exploded perspective view of the whole scaffolding device. It is a perspective view of the scaffolding stand which constructed the scaffolding board. It is a perspective view of a folding state of a scaffold stand. It is a front view of a folding state of a scaffold stand. It is a side view of a folding state of a scaffold stand. 1 is a perspective view of a scaffold board in a folded state; FIG. FIG. 4 is an unfolded bottom view of the scaffolding board; It is a perspective view which shows the principal part of a scaffold stand.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 show the entirety of a scaffolding system A for interior work in high places such as inside a building. It is assembled by a scaffold board 3 that can be laid out and folded, and a handrail frame 4 that is placed on a scaffold stand 1 and can be assembled and disassembled.

1 to 10, the scaffolding frame 1 has a pair of left and right leg frames 6 whose upper parts are connected by a pair of front and rear cross beam members 7 that can be folded. By folding the front and rear horizontal beam members 7, the left and right leg frames 6 approach each other to form a frame in a folded posture.
Each of the left and right leg frames 6 has a pair of front and rear pedestals 8 connected by a scaffold board engaging member 9 on the top and a plurality of intermediate horizontal members 10 below. A circular, circular or rectangular pipe material is used, and a caster wheel 51 is provided at the lower end thereof. It is connected to the surface side by welding or the like.

Each pedestal 8 has a connecting portion 8a for connecting a handrail frame at its upper end, and a bracket 16 for penetrating a pivot shaft protruding in the left-right opposing direction is provided on the upper portion thereof. The pivot shaft 11 also penetrates the horizontal beam member 7 .
That is, the horizontal beam member 7 is pivotally supported on the upper part of the pedestal 8 inside the outer end in a horizontal posture through a pivot shaft 11. It is positioned inside the penetration bracket 16 in the front-rear direction.

Similarly, inclined members 12 are arranged on the front and rear inner sides of the pedestal 8 . The inclined member 12 has hook engaging portions at both upper and lower ends, and the lower hook engaging portion is detachably engaged with the intermediate horizontal member 10 below the scaffolding board engaging member 9, and the upper hook engaging portion is engaged. The joint portion is detachably engaged with the outer end of the horizontal beam member 7 via a connecting pin 13, and the upper hook engaging portion is engaged with the scaffold board engaging member 9 instead of the connecting pin 13. It is possible to join together.

Each of the front and rear horizontal beam members 7 has a trapezoidal bracket 18 that is partially overlapped with each other at the opposite ends of the left and right short bars 7a, and a folding pivot pin 19 is provided on one side of the overlapped portion of both brackets 18, A fastener 20 for fixing the left and right short rods 7a horizontally in a straight line is provided on the other side of the overlapping portion. Bolts and nuts are used for both the folding pivot pin 19 and the fastener 20 so that both brackets 18 can be connected and separated.

The left and right short rods 7a are provided with connecting members 17 protruding downward and penetrating the connecting pins 13 at the outer ends positioned laterally outside of the pivot shaft 11 in the deployed posture. A separating member 21 projecting upwards opposite to 17 is provided.
The separation member 21 has a projection amount from the short rod 7a that is substantially the same as that from the short rod 7a to the folding pivot pin 19, and the left and right short rods 7a are folded around the folding pivot pin 19. At this time, the separation members 21 are brought into contact with each other so that the left and right short rods 7a are separated from each other to take a parallel posture.

When the scaffolding frame 1 is in a deployed posture for work, the left and right short bars 7a of the horizontal beams 7 are fixed in a horizontal straight line by the pivot pins 19 and the fasteners 20, and the pivot shaft 11 and the pivot shaft penetrating bracket are fixed. It is pivotally supported on the left and right inner sides of the pedestal 8 by 16 , and is connected to the upper end of the inclined member 12 on the left and right outer sides of the pedestal 8 by connecting pins 13 and connecting members 17 .
In the unfolded posture, the pivot shaft 11 and the connecting pin 13 are positioned with the pedestal 8 interposed therebetween, so that a large distance can be taken between them, and the tilting member 12 is subjected to a tensile force rather than a compressive force. Therefore, sufficient support strength can be obtained for the load applied to the center of the horizontal beam member 7 in the left-right direction.

When the scaffolding frame 1 releases the fasteners 20 and engages and connects the upper ends of the inclined members 12 to the scaffold board engaging members 9 in place of the connecting pins 13, the left and right short bars 7a of the cross beam members 7 are connected to the pivot pins 19. At the same time, the leg frame 6 is also folded around the pivot shaft 11, and as shown in FIG. Folded into a spaced but parallel position.

The scaffold stand 1 is folded, and when the folding pivot pins 19 are removed, the left and right leg frames 6 can be separated to the left and right.
1 to 7, 11, and 12, the scaffolding board 3 closes the space surrounded by the left and right scaffolding board engaging members 9 of the scaffolding frame 1 and the front and rear lateral beam members 7 to create a scaffold. It has a fitting hook 32 , and is mounted on the scaffolding base 1 by fitting the fitting hook 32 to the scaffolding plate engaging member 9 so as to be freely engageable and detachable.

The scaffolding board 3 is composed of two sets of board members, and each board member has opposite ends of left and right short boards 3a connected by folding pivot pins 31, and scaffolding board engaging members are attached to the outer ends of the left and right short boards 3a. A fitting hook 32 is provided to be fitted to the leg frame 9, and a width direction reinforcing member 33 is provided on the lower surface of each of the left and right short plates 3a. A brace 34 is provided.

The brace 34 has hook engaging portions at both ends, and is engaged with the width direction reinforcing member 33 and the intermediate lateral member 10 of the leg frame 6 so as to be detachably engaged. The brace 34 is housed between the left and right short plates 3a when they are folded.
When the scaffolding board 3 is erected on the scaffolding stand 1 in the deployed posture, the baseboards 36 are arranged on the front and rear edges of the scaffolding board 3. - 特許庁The baseboard 36 corresponds to the left and right short plates 3a, is formed of an L-shaped cross section member, and is provided with engaging portions 36a for engaging the short rods 7a of the front and rear horizontal beam members 7. As shown in FIG.

The handrail frame 4 placed on the pedestals 8 of the leg frame 6 is installed between the front and rear posts 41 and the posts 41 connected to the connecting portions 8a at the upper ends of the front, rear, left and right pedestals 8 in an upright manner. It has a vertical handrail member 42 and an expandable and detachable horizontal handrail member 43 installed between the left and right posts 41 .
The post 41 is made of a pipe material having a cross-sectional shape similar to that of the pedestal 8, such as circular, circular or rectangular. there is The hook engaging member 46 engages with the end hook 42a of the vertical handrail member 42 at its substantially U-shaped central portion, and engages with the end hook 43a of the horizontal handrail member 43 at its substantially U-shaped upper portion. match.

The vertical handrail member 42 has end hooks 42a fixed to both ends of the rectangular timber.
The front and rear horizontal handrail members 43 have square timbers 43c extendably inserted into both sides of a central square pipe 43b, and are fixed with fasteners 43d at the deployed position, and end hooks 43a are provided at the outer ends of each square timber 43c. .
The handrail frame 4 can be assembled by engaging vertical handrail members 42 and horizontal handrail members 43 with four posts 41 in two stages, and the vertical handrail members 42 and horizontal handrail members 43 are detachable. , and the horizontal handrail member 43 can be further expanded and contracted and disassembled.

In the scaffolding stand 1 of the above-described embodiment, the upper portions of a pair of left and right leg frames 6 are connected by a pair of front and rear horizontal beam members 7 that can be folded from a deployed horizontal position. are connected by an upper scaffold board engaging member 9 and a plurality of intermediate horizontal members 10, and each front and rear horizontal beam member 7 is pivotally supported on the upper part of the pedestal 8 via a pivot shaft 11, and is in a horizontal posture. A scaffold stand connecting a horizontal beam member 7 and a leg frame 6 with an inclined member 12, wherein the horizontal beam member 7 is placed in a horizontal position inside the outer end of the pedestal 8 via a pivot shaft 11. The inclined member 12 is pivotally supported, and is arranged on the facing side of each of the front and rear pedestals 8. The upper end is connected to the outer end of the horizontal beam member 7 via a connecting pin 13, and the lower end is connected to the middle horizontal member 10. Concatenated.

As a result, the support strength of the inclined member 12 that supports the horizontal beam member 7 in a horizontal position can be increased, and the connection strength between the pedestal 8 and the horizontal beam member 7 and the inclined member 12 can be increased.
In the scaffold stand 1 of the above-described embodiment, each pedestal 8 is provided with a bracket 16 for penetrating the pivot shaft projecting in the left-right opposing direction at the upper part, and the outer end of the horizontal beam member 7 is provided with a bracket 16 for penetrating the pivot shaft. A connecting member 17 projecting downward for penetrating a connecting pin is provided, and the upper end of the inclined member 12 can be connected to the scaffold board engaging member 9 in place of the outer end of the horizontal beam member 7 .

As a result, the distance from the pivot shaft 11 of the horizontal beam member 7 to the connecting pin 13 can be made large in the horizontal posture, and the bracket 16 for penetrating the pivot shaft and the connecting member for penetrating the connecting pin can be secured when the scaffolding frame 1 is folded. 17 can be structured so as not to protrude from the left and right leg frames 6, and the inclined member 12 can be well accommodated.
In the scaffolding stand 1 of the above-described embodiment, the front and rear horizontal beam members 7 are attached with brackets 18 that partially overlap each other at the opposite ends of the left and right short bars 7a, and one side of the overlapped portion of both brackets 18 is provided for folding. A pivot pin 19 is provided, and a fastener 20 for fixing the left and right short rods 7a in a horizontal line is provided on the other side of the overlapping portion. Separating members 21 are provided so that the left and right short bars 7a are separated from each other and placed in a parallel posture when folded around 19. - 特許庁

As a result, the horizontal beam members 7 can be formed from the left and right short rods 7a into a single rigid rod when unfolded, and can be arranged in parallel with each other and with respect to the left and right pedestals 8 when folded.
In the scaffolding stand 1 of the above-described embodiment, the scaffolding board 3 is installed between the scaffolding board engaging members 9 of the left and right leg frames 6, and the scaffolding board 3 is used for folding the opposite ends of the left and right short boards 3a. The left and right short plates 3a are connected by pivot pins 31, and fitting hooks 32 are provided at the outer ends of the left and right short plates 3a to fit the scaffolding plate engaging members 9. Width direction reinforcing members 33 are provided on the lower surfaces of the left and right short plates 3a. A brace 34 is provided and connected to the width direction reinforcing member 33 and the intermediate lateral member 10 of the leg frame 6 .

Thereby, the foldable scaffold board 3 can be stably installed on the left and right leg frames 6. - 特許庁
In the scaffolding frame 1 of the above-described embodiment, the handrail frame 4 is installed on the left and right leg frames 6, and the handrail frame 4 is connected to the upper ends of the front, rear, left, and right pedestals 8 in an upright manner. It has a post 41, a vertical handrail member 42 installed between the front and rear posts, and an extendable horizontal handrail member 43 installed between the left and right posts 41. The vertical handrail member 42 is attached to the post 41. A hook engaging member 46 capable of simultaneously engaging the end hook 42a of the side handrail member 43 and the end hook 43a of the side handrail member 43 is provided.

As a result, the handrail frame 4 that can be assembled can be placed stably on the pedestal 8 of the leg frame 6 .
It should be noted that the present invention is not limited to the above-described embodiments, and the shape, configuration, combination, etc. of the members can be changed.
For example, the scaffolding frame 1 may be provided with a grounding cushion material instead of the caster wheels 51, and the pedestal 8 and the caster wheels 51 may be made elastically adjustable.

The scaffolding device A may be composed of a scaffolding stand 1 and a scaffolding board 3, or the scaffolding board 3 may be composed of a single board.

1 scaffold stand 3 scaffold board 3a short board 4 handrail frame 6 leg frame 7 horizontal beam member 7a short bar 8 pedestal 8a connecting part 9 scaffold board engaging member 10 middle horizontal member 11 pivot shaft 12 inclined member 13 connecting pin 16 pivot Support shaft penetrating bracket 17 Connecting pin penetrating connecting member 18 Bracket 19 Pivot pin 20 Fastener 21 Separating member 31 Folding pivot pin 32 Fitting hook 33 Width direction reinforcing member 34 Brace 36 Skirting board 36a Engaging portion 41 Post 42 Vertical handrail member 42a End hook 43 Horizontal handrail member 43a End hook 43b Central rectangular pipe 43c Square bar 43d Stopper 46 Hook engaging member 51 Caster wheel A Scaffolding device

Claims (5)

The upper parts of a pair of left and right leg frames (6) are connected by a pair of front and rear horizontal beam members (7) that can be folded from the deployed horizontal position, and each of the left and right leg frames (6) has a pair of front and rear pedestals (8) on the top. The scaffold board engaging member (9) and a plurality of intermediate horizontal members (10) are connected, and each front and rear horizontal beam member (7) is attached to the upper part of the pedestal (8) via a pivot shaft (11). A scaffolding frame that pivots on a horizontal position and connects a horizontal beam member (7) and a leg frame (6) with an inclined member (12),
The horizontal beam member (7) is pivotally supported on the upper part of the pedestal (8) via a pivot shaft (11) inside the outer end in a horizontal posture,
The inclined member (12) is arranged on the opposite side of each of the front and rear pedestals (8). A scaffolding cradle, characterized in that it is connected to a cross member (10). Each of the pedestals (8) is provided with a bracket (16) for penetrating the pivot shaft projecting in the left-right opposite direction on the upper part,
A connecting member (17) projecting downward for penetrating a connecting pin is provided at the outer end of the lateral beam (7) in the horizontal posture,
A scaffolding cradle according to claim 1, characterized in that the upper ends of said ramp members (12) are connectable to scaffold plank engagement members (9) in place of the outer ends of cross beams (7). Each of the front and rear horizontal beam members (7) has brackets (18) attached to the opposite ends of the left and right short bars (7a), the brackets (18) partially overlapping each other, and one side of the overlapped portion of both brackets (18) for folding. A pin (19) is provided, and a fastener (20) for fixing the left and right short rods (7a) in a horizontal straight line is provided on the other side of the overlapping part,
Separating members (21) are provided at the outer ends of the left and right short rods (7a) so that the left and right short rods (7a) are separated and placed in a parallel posture when folded around the folding pivot pin (19). The scaffolding frame according to claim 1 or 2, characterized in that A scaffolding board (3) is installed between the scaffolding board engaging members (9) of the left and right leg frames (6),
Said scaffolding board (3) connects opposite ends of left and right short boards (3a) with folding pivot pins (31), and scaffolding board engaging members (9) are attached to outer ends of left and right short boards (3a). A fitting hook (32) is provided to fit against, a width direction reinforcing member (33) is provided on the lower surface of each of the left and right short plates (3a), and this width direction reinforcing member (33) and the leg frame (6) Scaffolding system according to any one of claims 1 to 3, characterized in that it is provided with braces (34) which are connected to the intermediate cross members (10) of the scaffolding trestle. A handrail frame (4) is installed on the left and right leg frames (6),
The handrail frame (4) includes posts (41) connected to the upper ends of front, rear, left, and right pedestals (8) in an upright manner, vertical handrail members (42) installed between the front and rear posts, and left and right posts. (41) and an extendable lateral handrail member (43) suspended therebetween;
The post (41) is provided with a hook engaging member (46) capable of simultaneously engaging the end hook (42a) of the vertical handrail member (42) and the end hook (43a) of the horizontal handrail member (43). The scaffolding frame according to any one of claims 1 to 4, characterized in that it is provided.

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