JPH07229287A - Expansion scaffolding device - Google Patents

Abstract

PURPOSE:To enable stretching in long span between framework scaffoldings while facilitating installation work and maintenance when interior finish work at a high place on the field, etc., of the execution of a building is conducted. CONSTITUTION:An upper scaffolding board 1 is superposed slidably on a lower scaffolding board 2 while the upper ends of an extensible support 4 are mounted rotatably on both sides of the inner end of the lower scaffolding board 2. Grabbing fittings 7 are installed on both sides of both ends in the longitudinal direction of the superposed upper and lower scaffolding boards 1, 2 respectively, and stretched between framework scaffoldings A, B. A guide member 3 guiding the sliding of the upper scaffolding board 1 is set up at the inner end of the lower scaffolding board 2 while a stopper 15 controlling movement in the external direction of the upper scaffolding board 1 may also be mounted at the inner end of the upper scaffolding board 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffolding board that is used by straddling a frame scaffold, and is characterized in that the scaffolding board is configured to be expandable and contractable.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, when performing interior work for a high place such as a ceiling at a construction site of a building,
Several frame scaffolds E are assembled on the floor D at intervals of the length of the scaffold plate 20. The holding metal fittings 21 of the scaffolding board 20 are laid on the lateral members of the frame scaffold E, and the scaffolding board 20 is bridged between the frame scaffolds E to provide a work floor for high-place work such as interior work of the ceiling F. If you have a large working space,
A plurality of sets of frame scaffolds are provided, and scaffolding boards are laid over each to tightly attach the frame scaffolds to a wide work floor, on which the worker rides to carry out work such as interior work in high places.

[0003]

However, the ordinary scaffolding plate has a limitation in length, and when the span between the frame scaffolds is long, there is a drawback that it cannot be bridged, and a work floor is provided in a wide place. Had to increase the number of framework scaffolds. In addition, it is necessary to decide the position where the framework scaffold is installed according to the length of the scaffolding board, which is inconvenient because the layout of the framework scaffold is not flexible. Therefore, the telescopic scaffolding device of the present invention holds the upper scaffolding plate slidably on the lower scaffolding plate, provides a support at the inner end of the lower scaffolding plate, and enables spanning over a long span, The purpose is to provide a scaffolding board that is easy to install and store.

[0004]

The telescopic scaffolding device of the present invention solves the above-mentioned problems. The upper scaffolding plate is slidably stacked on the lower scaffolding plate, and the upper and lower scaffolding plates are stacked. Attach the grips to both ends of the longitudinal direction, and rotatably attach the upper ends of the retractable supports to both sides of the inner end of the lower scaffolding plate so that the support can be folded to the lower surface of the lower scaffolding plate. It is constructed so that it can span long spans, and the scaffolding boards can be expanded and contracted to match the spacing of the frame scaffolds. In addition, the upper and lower scaffolding boards have been separated to improve workability when installing the scaffolding boards, and when stored, they are compactly packed for easy storage and carrying. Further, a guide member for guiding the slide of the upper scaffolding plate is provided at the inner end of the lower scaffolding plate to hold the upper scaffolding plate so that it can be integrated during storage. Also, handrail prop supports are attached to the outer sides of the stacked upper and lower scaffold plates in the longitudinal direction, and handrail prop supports are provided on both sides of the inner end of the lower scaffold plate so that the scaffold plate can easily be fitted with handrail props and handrails. The work can be done safely by attaching the. Furthermore, stoppers that restrict the amount of outward movement of the upper scaffold plate are detachably provided on both sides of the inner end of the upper scaffold plate to prevent the upper scaffold plate from coming out. Further, a hole penetrating vertically is provided at the inner end of the upper scaffold plate, and a screw hole is provided at a position corresponding to the hole on the upper surface of the lower scaffold plate,
The scaffolding board was secured by fixing the upper scaffolding board and the lower scaffolding board through bolts in the holes.

[0005]

When the telescopic scaffolding device of the present invention is bridged between the frame scaffolds, the holding metal fittings on the lower scaffolding plate side are hooked on the horizontal material of one frame scaffolding so as not to come off, and both lower surfaces of the lower scaffolding plate are fixed. Adjust the height by extending the support stored in the, and fix the stay that fixes the support to the side of the frame of the lower scaffolding board. Next, the upper scaffolding plate slidably held by the guide fittings is slid on the lower scaffolding board, and the gripping fittings of the upper scaffolding board are fixed to the horizontal frame member of the other frame scaffolding so as not to come off. Further, by attaching the handrails to the handrail mounting metal fittings provided at the upper end of the support and the four corners of the scaffolding plate, an operator climbing up to the scaffolding plate can safely work. In addition, by sliding the upper scaffold plate outward to remove it, hang the lower scaffold plate on the frame scaffold with the upper scaffold plate removed, and then slide the upper scaffold plate through the guide member and onto the lower scaffold plate. If it is held as much as possible, the weight of the scaffold at the time of mounting work becomes light, so that the mounting work can be performed easily. Furthermore, stoppers are provided detachably on both sides of the inner edge of the upper scaffolding plate to regulate the amount of outward movement of the upper scaffolding plate and prevent the upper scaffolding plate from slipping out. It is also possible to secure the safety by mounting bolts on both sides of the inner edge of the plate and fixing the upper scaffold plate and the lower scaffold plate.

[0006]

EXAMPLE An example of the telescopic scaffolding device of the present invention is shown in FIGS.
Will be described. The scaffolding device, which is the work floor by straddling the frame scaffolds A and B provided on the floor W when the interior construction work at a high place such as the ceiling or the back of the stairs is performed at the construction site of the building, is a lower scaffolding board. The upper scaffolding plate 1 is slidably stacked on the upper part 2. The upper scaffolding board 1 and the lower scaffolding board 2 are made of, for example, aluminum frames 1a and 2a, and floor materials Z such as non-slip mesh boards.
Is formed so that a worker can rest on it. Grasping metal fittings 7 are attached to both ends of the stacked upper scaffolding plate 1 and lower scaffolding plate 2 in the longitudinal direction, respectively, and frame scaffolding A, It is designed so that it can be laid across each horizontal member of B. The upper scaffolding plate 1 and the lower scaffolding plate 2 can be separated, and when they are bridged separately, the weight of the scaffolding plate is reduced and the workability of the bridging work can be improved.

When the guide member 3 having an L-shaped cross section is fixed to both side surfaces of the inner end of the lower scaffold plate 2 by welding or the like (see FIG. 3), the upper scaffold is supported by the guide member 3 and the lower scaffold plate 2 on both sides. The upper scaffolding plate 1 is slid along the inside of the guide member 3 and the upper surface of the lower scaffolding plate 2 while being held as if the plate 1 was sandwiched, and the scaffolding plate expands and contracts, and the upper scaffolding plate 1 slides outward. And let
The upper scaffolding board 1 and the lower scaffolding board 2 can be separated. The guide member 3 is not limited to the above-mentioned shape, and may be, for example, a shape in which L-shaped members on both sides are connected. Further, pin holes 1b are provided on both side surfaces of the inner end of the frame 1a of the upper scaffolding plate 1, and the stopper 15 is passed through the pin hole 1b to hit the guide member 3 to prevent the upper scaffolding plate 1 from coming out. You may do it. A removable pin or the like is used for the stopper 15, and in this case, the stopper 15
By pulling out and removing, the upper scaffolding board 1 can be slid outward and the upper scaffolding board 1 and the lower scaffolding board 2 can be separated. Instead of applying the stopper 15 to the guide member 3, the lower scaffolding plate 2 may be provided with a locking piece with which the stopper 15 abuts.

Support mounting brackets 5 are mounted on both outer side surfaces of the guide member 3 at the inner end of the lower scaffolding plate 2 by welding or the like, and the upper end of the support 4 is rotated by a shaft 6 via the support mounting brackets 5. When the scaffold plate is stored, the support 4 is connected to the lower scaffold plate 2 as shown by the dotted line in FIG.
It can be folded and stored along the bottom surface of. The support 4 is formed in a double-tube shape and is expandable and contractable, and a length adjusting fitting 4c of a support having an internally threaded support is screwed into an inner tube 4b having an outer periphery threaded,
The upper end of the inner cylinder 4b is inserted into the lower end of the outer cylinder 4a.
Then, by rotating and screwing the length adjusting metal fitting 4c to change its position, when the support 4 is erected, the length adjusting metal fitting 4c abuts on the lower end of the outer cylinder 4a, and at that position, the inner cylinder 4b. Does not enter the outer cylinder 4a, and the length of the support 4 is adjusted. A flange portion (not shown) is provided at the upper end of the inner cylinder 4b, and after the inner cylinder 4b is inserted into the outer cylinder 4a, the outer cylinder 4b is inserted.
The flange of the inner cylinder 4b hits a locking piece (not shown) attached to the lower end of the a to prevent the inner cylinder 4b from coming off the outer cylinder 4a. In addition, the length adjustment fitting 4c is provided at the lower end of the outer cylinder 4a.
Can be rotatably attached, and the upper end of the inner cylinder 4b can be screwed into the length adjusting metal fitting 4c to form the support 4. In this case, the inner cylinder 4b can be rotated or the length adjusting metal fitting 4c can be rotated.
Is rotated to adjust the length of the support 4.

A grounding metal fitting 4d is provided at the lower end of the inner cylinder 4b.
Is rotatably attached by a pin 14 so that it can cope with unevenness of the floor surface. The grounding metal fitting 4d is provided with a hole (not shown) so that when the scaffolding board is folded, it can be hung and held by the locking metal fittings 13 provided on both sides of the lower scaffolding board 2. A stay 8 for fixing the support 4 in a used state is provided rotatably in the middle of the outer cylinder 4a by a pin 9, and is fixed to a side surface of the frame 2a of the lower scaffolding plate 2 by a pin 10 during use. Support 4 is designed not to slip. Further, it is possible to prevent the support 4 from slipping by providing a slip stopper on the bottom surface of the grounding fitting 4d.

Further, handrail support pillars 11 are provided on the support mounting metal fittings 5 on both sides of the inner end of the lower scaffold board 2 and at the four corners of the scaffold board. Is inserted and a handrail 12a is provided between the columns to prevent the handrail 12a from falling from the workbench. Further, as shown in FIG. 4, screw holes 11a may be provided in the handrail support member 11 provided at the four corners of the support mounting bracket 5 and the scaffold plate, and the handrail support 12 may be fixed with bolts 11b. The handrail support 12 and the handrail 12a are removed when the scaffolding board is stored. The handrail support 12 and the handrail 12a can be provided so as to be expandable and contractible. In this case, the height of the handrail can be freely changed, and it is not necessary to replace the handrail according to the expansion and contraction of the scaffold plate.

When the telescoping scaffolding device having the above-mentioned structure is attached to the frame scaffolding, the holding metal fitting 7 of the lower scaffolding plate 2 is hung on the horizontal member of the one frame scaffolding A provided on the floor W so as not to come off. At the same time, remove the support 4 folded on the lower surface of the lower scaffold plate 2 in the state of the dotted line in FIG. 1 from the locking metal fitting 13 and rotate the length adjusting metal fitting 4c to adjust the length of the support 4. , The support 4 is erected on the floor W, and the stay 8 is attached to the side surface of the frame 2a of the lower scaffold plate 2 to fix the support 4. At this time, if the upper scaffolding plate 1 is separated by sliding the stoppers 15 on both sides of the inner end of the upper scaffolding plate 1 and sliding it outward, the scaffolding plate 1 becomes lighter in weight and easier to work.

Then, the inner end of the upper scaffolding plate 1 is inserted into the guide member 3 and held on the lower scaffolding plate 2, and stoppers 15 are inserted into the pin holes 1b on both sides of the inner end of the upper scaffolding plate 1 to prevent it from coming off. A work floor is constructed by bridging the holding metal fittings 7 on the outer end of the upper scaffolding plate 1 on the horizontal frame members of the other frame scaffolding B, and the handrail columns 12 are inserted into the handrail column supporting members 11 and the handrails are provided between them. Work safety is achieved by attaching 12a. In addition, this scaffolding plate can constitute a scaffolding floor for work by using the support 4 only with the lower scaffolding plate 2 in a state where the upper scaffolding plate 1 is separated.

Although the telescopic scaffolding device is arranged to be bridged over the frame scaffolding placed on the floor in this embodiment, the telescopic scaffolding device is also arranged between the frame scaffolding arranged on the landing of the stairs. It can also be used as a scaffolding board for interior of stairs. In this case, it can be bridged over various inclination angles of the stairs, and the scaffolding board can expand and contract,
It can accommodate stairs of various slope lengths.
At this time, if a non-slip projecting plate or the like is provided on the surface of the floor material Z of the upper scaffolding plate 1, an operator can put his foot on it to prevent slipping, so that when using the scaffolding plate in an inclined state. It is valid. Even if the scaffolding board is installed in an inclined position such as stairs, the grounding metal fitting 4d at the lower end of the support 4
Since it is rotatable, the bottom surface of the grounding fitting 4d is in contact with the step plate portion of the stairs, and the grounding fitting 4d is abutted and fixed to the inside of the corner, so that the support 4 is not easily displaced and is safe. Further, the length of the stay 8 for fixing the support 4 may be adjusted, and the lower scaffolding plate 2 may be held by the support 4 maintained at a predetermined angle so as to be perpendicular to the step plate of the stairs.

In the above embodiment, the guide member 3 having an L-shaped cross section is provided on both sides of the inner end of the lower scaffold plate 2, but the guide member 3 may be omitted as shown in FIG. it can. Even in that case, the upper scaffolding plate 1 and the lower scaffolding plate 2 can be provided by providing the handrail support column 12 and the handrail 12a in the use state.
Does not slide in the longitudinal direction because it is connected to the handrail support column 12 and the handrail 12a, and the handrail support columns 12 provided on both sides of the inner end of the lower scaffold plate 2 are located on the inner end side of the upper scaffold plate 1. The gap can be prevented. Further, as shown in FIG. 4, a horizontal bar 12b is provided between the two handrail support columns 12 provided on both sides of the inner end of the lower scaffold plate 2 so as to be in contact with the upper surface of the upper scaffold plate 1, Alternatively, the handrail support member 11 may be provided with screw holes 11a, the bolts 11b may be screwed in to fix the handrail support 12, and the horizontal bar 12b may press the upper scaffolding plate 1 toward the lower scaffolding plate 2. The support mounting bracket 5 provided on the lower scaffolding plate 2 may be projected slightly upward so that the upper scaffolding plate 1 does not come off.

In addition, as shown in FIG. 5, the upper scaffolding plate 1
The holes 16 are formed on both sides of the inner end of the scaffold vertically, and the screw holes 17 are provided on the upper surface of the lower scaffolding plate 2 at positions corresponding to the holes 16. It is also possible to fix the upper scaffolding plate 1 and the lower scaffolding plate 2 by penetrating a bolt 18 which is a little longer than the above and fixing it in the screw hole 17 of the lower scaffolding plate 2. The length of the scaffolding plate may be adjusted by providing a plurality of the scaffolding plates at regular intervals in the longitudinal direction on both sides. In this case, since the upper scaffolding board 1 and the lower scaffolding board 2 do not shift, a safer scaffolding can be assembled.

[0016]

Since the telescopic scaffolding device of the present invention can be bridged between frame scaffolds having a span longer than that of a normal scaffold plate, the number of frame scaffolds installed can be reduced. Also, since the scaffolding board is expandable, it can be installed anywhere as long as the length of the scaffolding board allows. In addition, since the support provided at the inner end of the lower scaffolding plate prevents the scaffolding plate from swinging or bending, the work can be performed safely. The upper scaffolding board can be stacked on top of the lower scaffolding board, and the support can be folded along the lower surface of the lower scaffolding board for storage, which is very convenient for storing and moving the scaffolding board. . Further, since the scaffolding plate can be erected with the upper scaffolding plate removed, the weight of the scaffolding plate at the time of erection can be reduced, and even one person can erect and the workability is improved.

[Brief description of drawings]

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

FIG. 2 is a plan view of an embodiment of the telescopic scaffolding device of the present invention.

FIG. 3 is a perspective view around a guide member that holds an upper scaffolding plate.

FIG. 4 is a perspective view showing an embodiment in which a horizontal bar for pressing the upper scaffolding plate is provided.

FIG. 5 is a perspective view showing an embodiment in which a bolt for fixing the scaffold plate is used.

FIG. 6 is a front view showing a conventional example.

[Explanation of symbols]

 1 Upper scaffolding board 2 Lower scaffolding board 3 Guide member 4 Support

Claims (5)

[Claims] 1. An upper scaffold plate is slidably stacked on the lower scaffold plate, and gripping metal fittings are attached to both sides of the stacked upper and lower scaffold plates in the longitudinal direction, respectively. An expandable scaffolding device, wherein the upper end of a stretchable support is rotatably attached to both sides, and the support is configured to be folded onto the lower surface of a lower scaffolding plate. 2. The telescopic scaffolding device according to claim 1, wherein guide members for guiding the slide of the upper scaffolding plate are provided on both sides of the inner side of the lower scaffolding plate. 3. A handrail support member is attached to the outer side of both ends in the longitudinal direction of the upper and lower scaffold plates, and handrail support members are provided on both sides of the inner end of the lower scaffold plate. Telescopic scaffolding device according to. 4. The telescopic scaffolding device according to claim 1, wherein stoppers for restricting an outward movement amount of the upper scaffolding plate are detachably provided on both sides of an inner end of the upper scaffolding plate. 5. An upper end of the upper scaffolding plate is provided with a vertically penetrating hole, a screw hole is provided at a position corresponding to the hole on the upper surface of the lower scaffolding plate, and a bolt is passed through the hole to insert the upper scaffolding plate and the lower scaffolding plate. The telescopic scaffolding device according to claim 1, wherein the telescopic scaffolding device is fixed.