JP2851750B2 - Simple stage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple stage which is constructed on a steel column such as a column or a box column and is used as a work scaffold for joining steel beams at the time of steel frame construction.

[0002]

2. Description of the Related Art Conventionally, an aluminum column stage (trade name) as shown in FIG. 6 has been commercially available as a dedicated stage which is erected on a column pillar during steel frame construction and used as a work scaffold for joining steel beams. I have. The column stage is made of an aluminum alloy, and a pair of assembling cloths constructed by laying a scaffold plate on a multi-layer horizontal frame connected by a plurality of socket materials arranged along the outer circumference of a rectangular horizontal frame having two layers of upper and lower layers. A frame a ', ten sets of handrail fences b' formed by arranging an intermediate horizontal member between adjacent free end members of the gate frame, and a bridge on both sides between the pair of assembled fabric frames a '. It is composed of a pair of scaffold frames c ′ and handrail fences b ′ attached to both ends of the pair of assembled fabric frames a ′. A pair of assembling cloth frames a 'are arranged in an antisymmetric manner on a plane with the column pillar B' interposed therebetween, and are fixed to the column pillars with locking hardware. Respectively, bridging the scaffolding frame c ',
Five sets of handrail fences b 'are respectively inserted into a plurality of socket members arranged along the outer periphery of each assembly cloth frame a', and handrail fences b 'are fixed to both side ends of each assembly cloth frame a'. It is designed to be erected.

[0003]

The conventional aluminum alloy column stage comprises a pair of assembled fabric frames a 'composed of a plurality of parts, ten sets of handrail fences b' and a pair of scaffold frames c '. Therefore, the number of components is large and the erection process is complicated, and the assembling fabric frame a 'is as heavy as 20 and several kilograms. In addition, the column stage is made of aluminum alloy, has a complicated structure, and has a large number of parts. Therefore, there is a problem that the product is expensive and handling such as transportation and storage is troublesome. Further, since the column stage has no expansion / contraction means, there is a problem that a work floor having an optimum dimension cannot be installed corresponding to a change in the cross section of the column column, so that the column stage is lacking in safety.
SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and the object thereof is to reduce the number of component parts, simplify the erection process, make the erection and disassembly work more efficient, and Is made of inexpensive materials, has a simple structure and is light in weight, and is inexpensive to facilitate handling such as transportation and storage. It is another object of the present invention to provide a simple stage for improving safety by providing a work floor having an optimal size corresponding to a change in the cross section of a steel column by providing a telescopic means for each component.

[0004]

SUMMARY OF THE INVENTION The present invention has achieved the above-mentioned object in a stage which is erected on a steel column during construction of a steel frame and is used as a work scaffold for joining steel beams. Therefore, a pair of horizontal frames in which a horizontal branching member is connected to one free end side of the U-shaped horizontal member and locking pieces are provided at both ends, and a rotation inhibiting piece is provided at a central side of the U-shaped horizontal member. A pair of handrail frames that are erected by the locking pieces at both ends of the horizontal frame and provided with handrail chains at both ends, and hooks that are hooked on each side of the U-shaped horizontal frame And four scaffolding frames having the tool at both ends. In addition, the center part of the horizontal frame is configured to be extendable, the middle part of the handrail material is configured to be expandable, and the middle part of the scaffolding frame is configured to be expandable, so that the size corresponding to steel columns with different dimensions Work floor can be erected.

[0005]

When assembling the simple stage of the present invention around a steel column, a plurality of a pair of mounting pieces are fixed to two opposite outer surfaces of the steel column, and a steel pipe of a horizontal frame is provided between each pair of mounting pieces. The horizontal frame is inserted horizontally to prevent the horizontal frame from being pulled out by the fixing pin, and at the same time, the horizontal frame is prevented from rotating from the horizontal state by applying the rotation preventing piece to the outer surface of the steel column. Next, insert the lower part of the handrail frame into the locking piece of the horizontal frame,
A handrail frame is erected on the horizontal frame, and a handrail chain provided on each handrail frame is connected at the center of each handrail. Thereafter, the hooks at both ends of the four scaffold frames are locked between the respective side portions of the two horizontal frames to complete the process.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a simplified stage of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a simple stage according to a first embodiment of the present invention. A simple stage A is composed of a pair of horizontal frames 3 as a cloth frame, a pair of handrail frames b, and four scaffold frames c. Is done. Then, the two horizontal frames 3 are arranged in an antisymmetric manner on a plane with the steel column B interposed therebetween, fixed via mounting pieces d provided on the steel column B, and handrails are respectively provided between the opposed horizontal frames 3. The frame b and the scaffold frame c are bridged, and the scaffold frame c is erected on each of the horizontal frames 3. Therefore, the simple stage of the present invention has a small number of components and the erection process is simple and clear.

FIGS. 2A and 2B are perspective views showing components of the simple stage, wherein FIG. 2A shows a horizontal frame, FIG. 2B shows a handrail frame, and FIG.
Is a scaffold frame. A steel pipe is bent into a horizontal U-shape to form a U-shaped horizontal member 1, and a horizontal branch member 2 made of a steel pipe is orthogonal to the middle outer surface of one end 1 a of the U-shaped horizontal member 1. The inner end is welded to form the horizontal frame 3. An engaging piece 4 is erected on the top surface of the horizontal branch member 2 in the horizontal frame 3 and on the top surface of the other end 1 c of the U-shaped horizontal member 1, and a central portion of the U-shaped horizontal member 1 is provided. On the lower surface of the middle part of the side 1b, there is provided a rotation preventing piece 5 made of an iron plate which abuts on the pillar B to suppress the rotation of the horizontal frame 3, and a suspension ring 6a is provided on the central side 1b at a position adjacent to each rotation suppressing piece 5. The fixing pin 6 is attached to the suspension ring 6a via a chain 6b. In place of the rotation suppressing piece 5, an insertion hole vertically penetrating may be provided in the middle of the central side 1b, and the rotation suppressing pin may be penetrated through the insertion hole.

[0008] The handrail frame b has a pair of vertical W-shaped support members 7 formed by bending a steel pipe into a W-shape in which both adjacent free ends are parallel to each other. A handrail material 8 made of steel pipe is disposed between the long sides 7b of the free ends, and is welded to the inner end surface of the middle of the short side 7a of the free ends and the long side 7b of the free ends. A suspension ring 9a is attached to the upper end portion and the intermediate portion of each free end long side 7b, and a steel handrail chain 9 having a hook 9b attached to the distal end via the suspension ring 9a is provided in two vertical stages. The scaffold frame c is provided with a conventional type hook 11 for gripping the steel pipe of the horizontal frame 3 at both ends of the front surface of both ends of the steel scaffold plate 10 in the longitudinal direction. Therefore, the components constituting the simple stage as described above are inexpensive, have a simple structure, and are lightweight.

FIG. 3 is a perspective view of a main part showing expansion and contraction means of components of a simple stage according to a second embodiment of the present invention, wherein (a) is a horizontal frame 3, (b) is a handrail frame b, and (c) is Scaffolding frame c.
The expansion / contraction means of the horizontal frame 3 divides the central side 1b at an intermediate portion, inserts a horizontal short pipe 1d into each steel pipe over the divided sides 1b, 1b ', and inserts each of the divided sides 1b, A bolt 1f is screwed into a bolt hole 1e which is pierced and threaded near the division of 1b '. Then, the divided side 1b, 1 into which the horizontal short pipe 1d is inserted.
b ′ is expanded and contracted, and the bolt 1f is screwed in to fix the horizontal short tube 1d.
b and 1b 'are connected to form a horizontal frame 3 having a predetermined length. The expansion and contraction means of the handrail frame b divides the handrail material 8 at an intermediate portion and divides the handrail material 8a, 8b into each steel pipe in a handrail short pipe 8c.
Is inserted, and a bolt 8e is screwed into a bolt hole 8d which is pierced and screwed in the vicinity of the divided portion of each of the handrail divided members 8a and 8b.
Then, the handrail split members 8a and 8b into which the handrail short tubes 8c are inserted are expanded and contracted, and bolts 8e are screwed to fix the handrail short tubes 8c.
b to form a handrail material 8 having a predetermined length. The expansion and contraction means of the scaffolding frame c divides the steel scaffolding plate 10 at an intermediate portion, inserts the scaffolding short plate 10c into each steel plate over the dividing plates 10a and 10b, and A bolt 10e is screwed into a bolt hole drilled and threaded near the side surface of the divided part.
And the split plates 10a and 10b into which the scaffold short plates 10c are inserted.
Is fixed and the scaffold short plate 10c is fixed by screwing the bolt 10e, so that the divided plate 10
a and 10b are connected to form a scaffold 10 having a predetermined length. Therefore, by arranging the simple stage A with the components having the expansion and contraction means, it is possible to provide a work floor having an optimal size corresponding to a change in the cross section of the steel column B.

FIG. 4 is a perspective view showing an embodiment of the mounting piece d. The mounting piece d is a short piece of L-shaped steel, which is separated from the bent portion of the short piece by substantially the same dimension as the outer diameter of the steel pipe of the horizontal frame 3. The insertion hole of the fixing pin 6 is pierced. The pair of mounting pieces d is spaced apart from the outer diameter of the steel pipe of the horizontal frame 3 on both sides of the steel column B facing the steel column B at a level near the lower part of the beam joint of the steel column B. And weld them up and down.
Then, the horizontal frame 3 is fixed via the mounting piece d welded to the steel column B.

FIG. 5 shows a frame structure of the simple stage of the present invention. (A) is a perspective view, (B) is a plan view, and a pair of mounting pieces d welded to both side surfaces of the steel column B. In the meantime, the horizontal frame 3 is inserted horizontally and brought into contact with the side of the steel column B, and the fixing pins 6 provided on the horizontal frame 3 are inserted into the insertion holes of the mounting piece d to fix the horizontal frame 3. The horizontal frames 3 are arranged on both sides of the steel column B in an antisymmetric manner on a horizontal plane. At this time, the rotation preventing piece 5 provided on the horizontal frame 3 abuts against the side of the steel column B below the horizontal frame 3 to prevent the rotation of the horizontal frame 3 with the mounting piece d as a rotation axis. Hold. Next, each free end long side 7b of the handrail frame b is fitted and inserted into each of the locking pieces 4 provided on the horizontal frame 3 across the horizontal frame 3 arranged in reverse symmetry,
The hook 11 of the scaffolding frame c is hooked on the side edge of the central side 1 b of the horizontal frame 3 and the horizontal branch 2. In addition, each horizontal frame 3 has a scaffold frame c.
Is hooked on the inner side 1a and the outer side 1c of the horizontal frame 3 via the hook 11. A circular ring in which the lower handrail chains 9 provided on the respective W-shaped support members 7 of the opposing handrail frames b are connected and stretched at the center, and the upper handrail chains 9 are attached to both surfaces of the web of the steel beam C. And a simple stage is installed. The disassembly of the simple stage is performed in a reverse procedure to the installation procedure.

Further, in order to provide a simple stage having an optimum size corresponding to a change in cross section of the steel column B, the horizontal frame 3, the handrail frame b, and the scaffold frame c of the second embodiment shown in FIG. 3 are used. In this case, the horizontal frame 3 divides a central side 1b of the horizontal frame 3 at an intermediate portion, moves the divided sides 1b and 1b 'into which the horizontal short pipe 1d is inserted, and expands and contracts to a predetermined size. Side 1b, 1
A bolt 1f is screwed into and connected to a bolt hole 1e provided in the vicinity of the divided portion b 'to adjust the dimensions. Handrail frame b is handrail material 8
Is divided at an intermediate portion, and the handrail split members 8a and 8b in which the handrail short pipes 8c are inserted are moved to expand and contract to predetermined dimensions, and bolts are inserted into bolt holes 8d provided near divided portions of the handrail split members 8a and 8b. 8e is screwed and connected to adjust the dimensions. The scaffolding frame c divides the scaffold plate 10 at an intermediate portion, moves the divided plates 10a and 10b in which the scaffold short plates 10c are inserted, and expands and contracts them to a predetermined size.
A bolt 10e is screwed into a bolt hole 10d provided in the vicinity of a side surface of the divided portion of each of the divided plates 10a and 10b, and connected to adjust the dimensions. Then, the two horizontal frames 3 whose dimensions have been adjusted as described above are arranged in an antisymmetric manner on a plane with the steel column B interposed therebetween, and are fixed via mounting pieces d provided on the steel column B, between the opposed horizontal frames 3. By bridging the handrail frame b and the scaffolding frame c whose dimensions have been adjusted over the span, and laying the scaffolding frame c on each of the horizontal frames 3, respectively, the optimum configuration corresponding to the cross-sectional change of the steel column B is provided. A work floor of dimensions can be erected.

[0013]

According to the present invention, the simple stage is composed of a pair of horizontal frames, a pair of handrail frames, and four scaffold frames, and the pair of horizontal frames are antisymmetric on a plane with the steel column interposed therebetween. It is arranged and fixed via a mounting piece provided on a steel column, a handrail frame and a scaffold frame are respectively bridged between the pair of opposed horizontal frames, and a scaffold frame is respectively laid across the horizontal frames. Since the erection is carried out, the number of component parts is small, the erection process is simple and clear, and the work for erection and disassembly of the work scaffold is streamlined. Moreover, since the components constituting the simple stage are inexpensive, have a simple structure, and are light in weight, they are inexpensive and easy to handle for transportation and storage as compared with conventional products. In addition, a simple stage is erected by a horizontal frame, a handrail frame, and a scaffold frame provided with expansion and contraction means to provide a work floor of an optimal size corresponding to a change in cross section of a steel column, thereby providing a safe work scaffold at a low cost. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a simple stage according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing components of the simple stage shown in FIG. 1, wherein (a) is a horizontal frame, (b) is a handrail frame, and (c) is a scaffold frame.

FIGS. 3A and 3B are main part perspective views showing expansion / contraction means of component parts according to a second embodiment of the present invention, wherein FIG. 3A is a horizontal frame, FIG.
(C) is a scaffold frame.

FIG. 4 is a perspective view showing one embodiment of a mounting piece.

FIG. 5 shows an installation mode of the simple stage of the present invention,
(A) is a perspective view, and (B) is a plan view.

FIG. 6 is a perspective view showing an embodiment of a conventional column stage, in which (a) is a perspective view showing an installation state, and (b) is a perspective view showing components.

[Explanation of symbols]

 b Handrail frame c Scaffold frame d Mounting piece 3 Horizontal frame

Claims (2)

(57) [Claims] 1. A stage which is erected on a steel column during construction of a steel frame and is used as a work scaffold for joining steel beams, etc., wherein a horizontal branch member is connected to one free end side of a U-shaped horizontal member and both ends are connected. A pair of horizontal frames provided with locking pieces at the center of the U-shaped horizontal member and a rotation preventing piece provided at the center of the U-shaped horizontal member, and both ends are locked by the locking pieces at both ends of the horizontal frame and both ends are erected. A simple stage comprising a pair of handrail frames provided with a handrail chain at each portion, and four scaffold frames having hooks at both ends for hooking on each side of the U-shaped horizontal frame. . 2. The central side of the horizontal frame is configured to be stretchable,
The simple stage according to claim 1, wherein an intermediate portion of the handrail material is configured to be extendable, and an intermediate portion of the scaffold frame is configured to be extendable.