JPH0246598Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a foldable work scaffold used for various types of work.

Various structures have been proposed for freely movable work scaffolds used for simple construction work, but all of them have complex mechanisms, are heavy, and require difficult operations for assembly and folding. It is complicated and
There are problems in that it is inconvenient to move and transport, requires effort to adjust the vertical height, and is unstable to use on slopes or stepped locations.

This idea was made to solve the problems mentioned above, and it is easy to assemble, fold, and adjust the height. It is compact when folded, and is stable even on slopes and stepped areas. The purpose is to provide a work scaffold that can be used in a suitable manner.

In order to achieve the above objectives, this invention consists of a pair of ladder frames that are placed facing each other in an upright position on both sides, and a scaffold board that is installed between both ladder frames. A holder that holds the vertical column of the ladder frame so that it can be moved vertically and longitudinally is attached so that it can rotate freely in the vertical direction, and a holder is attached to the treadle of the ladder frame at a position close to the inside of both holders at both ends of the scaffold board. A hook-like metal fitting that is externally fitted and locked to the holder is fixed, an inclined edge is formed on the external fitting part of the hook-like metal fitting to the treadle to draw the treadle toward the scaffold board, and at least one of the holder and the hook-like metal fitting is A structure is adopted in which a tilting receiver is provided to hold the holder in an upright state, and the holder is tilted toward the scaffold board by receiving the rungs of the ladder frame with the sloped edge of the hook-shaped metal fitting. By supporting the ladder frame with the receiving part, the ladder frame and the scaffolding board can be firmly connected without rattling.

This invention will be explained below based on the embodiments shown in the accompanying drawings.

As shown in the figure, the work scaffold includes a scaffold board 1, a pair of ladder frames 2 disposed at both ends of the scaffold board 1, and a pair of ladder frames 2 that are rotatably attached to the scaffold board 1.
The hook-shaped metal fitting 5 is fixed to the scaffolding board 1 and receives the rungs 4 of the ladder frame 2 held by the holder 3. 5 and holder 3
A tilt receiving portion 6 of the holder 3 is provided on either one of the two sides.

The ladder frame 2 is formed by horizontally suspending rungs 4 between vertical columns 7 on both sides at a constant vertical interval, and providing ground legs 8 at the lower ends of the vertical columns 7.

The hook-shaped metal fittings 5 are fixed to both ends of the scaffolding board 1 by means such as welding so as to form a pair on both sides, and a portion protruding outward from the scaffolding board 1 is formed into a hook 9, and the inside of this hook 9 is It forms an inclined edge 10 for receiving the step 4 of the ladder frame 2.

As shown in FIG. 5 or 6, the hooks 9 are bent toward the mating hook-shaped metal fittings so as to circumscribe the vertical columns 7 of the ladder frame 2 from the inside, and the slanted edges 10 are As shown in FIGS. 3, 4, and 7, a recessed part is formed at a position such as the tip of the hook 9 in a recess provided to fit on the step 4, and its upper end approaches the scaffold board 1 side. The ladder frame 2 is inclined as shown in FIG.

The holder 3 is formed by connecting a holding part 11 that circumscribes the vertical column 7 from the outside on one side of the substrate 14,
With the board 14 stacked on the outer surface of the hook-shaped metal fitting 5, the position of the board 14 below the hook 9 is pivotally fixed to the hook-shaped metal fitting 5 by a pivot 12.

The holder 3 is rotatable around the pivot 12, and the holding part 11 holds the vertical column 7 so as to be movable in the vertical and longitudinal directions, so that the holder 3 and the ladder frame 2 can rotate together. It's getting old.

When the ladder frame 2 held by the holder 3 is pushed up at a standing angle, the treadle 4 enters the hook 9 and comes into contact with the sloped edge 10, and due to the load of the scaffolding board 1, the sloped edge 10 moves the treadle 4 to the scaffolding. Since the ladder frame 2 is pressed against the plate 1 side, a tilting force about the pivot shaft 12 of the holder 3 is generated in the ladder frame 2.

In the case of FIGS. 1 to 7, the tilt receiving part 6 is connected to the upper vertical edge of the hook-shaped metal fitting 5, and is connected to the upper vertical edge of the hook-shaped metal fitting 5.
The holder 3 is adapted to receive the upper part of the board 14 in the ladder frame 2 and is about to tilt together with the ladder frame 2.
This contact with the receiving portion 6 prevents the tilting movement.

Therefore, the ladder frame 2 is fixed at two points: the contact point with the inclined edge 10 of the step 4 and the press contact point 13 with the lower end of the holding part 11 of the vertical column 7, and the ladder frame 2 is fixed with respect to the scaffold board 1. will be combined without any wobbling.

Further, as shown in FIG. 8, the tilt receiving portion 6 is
A hook 9 is attached to the outer surface of the holding part 11 in the holder 3.
A plate-shaped arm 6a protruding toward the side is provided, and the arm 6a abuts the tip edge of the hook 9 at the position where the holder 3 holds the ladder frame 2 upright. It may also be formed to be supported in an upright position.

FIG. 1 shows a state in which the ladder frames 2 on both sides are erected, and the vertical positions of the hook-shaped metal fittings 5 on both sides of the scaffold board 1 and the pivot shafts 12 of the holder 3 are changed, and both ladder frames 2 are placed on the underside of the scaffold board 1. When folded, the ladder frames overlap each other and fit together.

Figure 3 shows the hook-shaped metal fitting 5 placed on the right side of Figure 1.
FIG. 4 shows the holder 3 arranged on the left side, and the pivot 12 on the right side in FIG. 1 is located lower than the pivot on the left side in FIG.

Further, FIGS. 1 to 5 show examples in which the ladder frame 2 is formed using a circular pipe, and the ends of the rungs 4 are flattened and combined with the vertical pillars 7.
The holding portion 11 of the holder 3 is formed in an arc shape.

6 and 7 show examples in which the ladder frame 2 is formed of a square pipe, the holding part 11 of the holder 3 is formed in a U-shape so as to circumscribe the square pipe, and the hook 9 is attached to the treadle 4. It has a wide notch so that it can fit on the outside.

The ladder frame 2 is not limited to the above-mentioned cross-sectional shape, and the vertical pillars 7 can be arbitrarily selected from semicircular, H-shaped, U-shaped, etc., and the holding part 11 is shaped according to the cross-sectional shape of the vertical pillars. All you have to do is decide the shape of .

In addition, a scaffold board 1, a ladder frame 2, a hook-shaped metal fitting 5,
The material of the holder 3 etc. may be selected appropriately.
It is suitable to use aluminum to reduce the overall weight.

The working scaffold of this invention has the above-mentioned configuration, in which the ladder frames 2 are inserted into the holders 3 attached to both ends of the scaffold board 1, and after the ladder frames 2 are rotated upright about the pivot 12, the ladder frames 2 are held. When the ladder frame 2 is slid upward along the section 11 and the step 4 at the desired position is engaged with the hook 9, the ladder frame 2 on both sides becomes independent in a V-shape with the bottom widening as shown in FIG. Work can be performed by standing on the scaffolding board 1.

When the work scaffold stands on its own, the rungs 4 of the ladder frame 2 come into contact with the inclined edges 10 of the hooks 9, and the holder 3 is supported by the tilt receiver 6, so that the ladder frame 2 is attached to the lower end of the holding part 11. With the pressure contact point 13,
It will be connected to the scaffolding board 1 without any wobbling.

In addition, when storing or transporting, the part of the ladder frame 2 held by the holder 3 is pulled down to the scaffold board 1 by the guide, and after removing the treadle 4 from the hook 9,
It is sufficient to rotate both ladder frames 2 to the lower surface side of the scaffolding board 1 about 2 and fold them, and the scaffolding board 1 and both ladder frames 2, 2 are overlapped flatly as shown in FIG.

The height of the scaffold board 1 during use can be freely adjusted by adjusting the spacing between the treads 4 on both ladder frames 2, 2, and when used on stepped sections or on slopes, What is necessary is to change the hooking position of the hook 9 on the left and right sides.

Furthermore, since both ladder frames 2 can be separated from the scaffolding board 1 by removing them from the holder 3,
Can be used alone as a ladder.

As described above, since this invention has the above-described configuration, it has the following effects.

(1) Attach a hook-like metal fitting and a holder to the end of the scaffold board, provide an inclined edge on the hook-like metal fitting to which the step of the ladder frame held by the holder comes into contact, and attach a holder to either the hook-like metal fitting or the holder. Since the tilt receiving part is provided, the vertical column of the ladder frame is pressed against the lower holding end of the holder, and the scaffold board and the ladder frame can be connected without rattling, and a stable work scaffold can be assembled.

(2) Since the desired rungs of the ladder frame held by the holder can be hooked to the hook-shaped metal fittings, the height of the scaffolding board can be freely adjusted by adjusting the spacing between the rungs according to the work conditions, and moreover, By changing the position of the treads, the scaffolding board can be used horizontally even on stepped or sloping ground.

(3) Since the holder's tilt receiving part is provided on one side of the holder and the hook-like metal fitting, the load on the scaffolding board acts effectively as a pressure force between the holder and the vertical column of the ladder frame, resulting in a highly safe structure with no rattling. Scaffolding can be constructed.

(4) Since the ladder frame can be folded to overlap the scaffolding board, the whole becomes flat, making storage and transportation convenient.

(5) The ladder frame can be inserted and removed from the holder, so
Can be used alone as a ladder.

(6) Since the ladder frame and scaffolding board can be separated, you can prepare work scaffolds of different lengths by preparing them with different lengths and selecting and combining them according to the work conditions. can be assembled freely, and the ladder frame and scaffolding board can be made compatible.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the work scaffold according to this invention in an upright state, Fig. 2 is a front view showing the same in the folded state, Figs. 3 and 4 are enlarged front views of the holder part in the same above, 5 is a cross-sectional plan view of the same, FIG. 6 is a cross-sectional plan view showing different examples of the ladder frame and holder, FIG. 7 is a front view of the same, and FIG. 8 is a cross-sectional plan view showing another example of the tilt receiver. It is a diagram. 1...Scaffolding board, 2...Ladder frame, 3...Holder, 4...Treadle, 5...Hook-like metal fittings, 6...Tilt receiver, 7...Vertical column, 9...Hook, 10... ... Sloped edge, 11 ... Holding part, 12 ... Pivot.

Claims (1)

[Scope of utility model registration request] It consists of a pair of ladder frames that are placed facing each other in an upright position on both sides, and a scaffold board that is installed between both ladder frames, and the vertical columns of the ladder frame can be moved vertically and longitudinally to positions on both sides at both ends of the scaffold boards. The holder to be held in the ladder frame is attached so that it can rotate freely in the vertical direction, and hook-shaped metal fittings that are externally fitted onto the treads of the ladder frame are fixed to positions close to the inside of both holders at both ends of the scaffold board. A tilting receiving part that forms an inclined edge that pulls the step toward the scaffold board at the external fitting part of the hook-like metal fitting to the step, and holds the holder in a state in which the ladder frame stands up on at least one of the holder and the hook-like metal fitting. A work scaffold with a