JP7063158B2 - Maintenance sheet - Google Patents

Description

The present invention relates to a maintenance sheet. More specifically, the present invention relates to a maintenance sheet used to close a gap in a building scaffold.

FIG. 8 shows a scaffolding at a construction site. The scaffold is composed of a plurality of scaffold plates 10 and pipes 11 and 12 supporting the scaffold plates 10. In the figure, a pair of two scaffolding plates 10 and 10 arranged in the width direction is shown, but in reality, the scaffolding plates 10 are used in a state where many scaffolding plates 10 are connected in the longitudinal direction.

A vertical pipe 11 and a horizontal pipe 12 are used to support the scaffolding plate 10.
The vertical pipes 11 are erected vertically at intervals, and the horizontal pipes 12 are passed between the plurality of vertical pipes 11 and 11 and fixed with metal fittings. Hooks are provided on both sides of the short side of the scaffolding plate 10, and the hooks are hooked on the horizontal pipe 12 to install the scaffolding plate 10.
When two scaffolding plates 10 and 10 are provided in parallel, a gap g is formed between the long sides thereof. Since this gap g is slightly larger than the diameter of the vertical pipe 11, it is about 10 cm.
Then, an accident occurred in which a tool used during work on the scaffold or a small part such as a bolt or a nut fell from this gap g.

In order to prevent small parts from falling from the scaffold, there are prior arts of Patent Documents 1 and 2.
The prior art of Patent Document 1 is to prevent small parts from falling from gaps between short sides of adjacent scaffold plates, and gap filling plates are attached to hooks provided on both sides of the short sides of the scaffold plate. Is.
However, with this conventional technique, since the gap g between the long sides between the adjacent scaffolding plates 10 and 10 cannot be filled, it is not possible to completely prevent the fall accident of small parts.

The prior art described in Patent Document 2 discloses a gap plate for covering a gap between long sides of a scaffold plate. The gap plate comprises a plate body having a size that covers the gap on the long side between adjacent scaffold plates, and an engaging means for fixing the plate body to the scaffold plate.
The engaging means consists of a fixed engaging member fixed in place on the plate body and a movable engaging part including bolts that are movable in the width direction of the plate body, and the fixed engaging member is welded to the lower surface of the plate body. A guide member that is fixed with and guides the bolt of the movable engaging member is also welded to the lower surface of the plate body (paragraph 0014 of the same document).
The plate body is attached to the scaffolding plate by tightening bolts. The plate body is made of metal because it is a weldable member.

According to the prior art of Patent Document 2, it is possible to fill the gap between the long sides of the scaffolding plate, but since the plate body is made of metal, it is heavy and difficult to transport and install, and it is not the standard size. There were problems such as being unable to fit and being unsafe because the plate body would tilt if there was a step between adjacent work floors.

Japanese Unexamined Patent Publication No. 2005-9127 Japanese Unexamined Patent Publication No. 11-264239

In view of the above circumstances, the present invention provides a maintenance sheet that is easy to transport and install, is easy to match the size of the scaffolding board and the length of the gap, and does not create a gap even if there is a step between the scaffold and the work floor. The purpose.

The maintenance sheet of the first invention is a maintenance sheet that closes a gap between a plurality of scaffolding plates arranged adjacent to each other, and is a strip-shaped sheet member made of a flexible material, and is spaced in the longitudinal direction of the sheet members. It is characterized in that a cut is formed for opening and tearing by hand .
In the first aspect of the invention, the maintenance sheet of the second invention is formed with non-slip ribs extending in the longitudinal direction of the sheet member and protruding from both front and back surfaces of the sheet member in a convex shape on both sides in the width direction of the sheet member. It is characterized by being done.
In the second aspect of the invention, the maintenance sheet of the third invention is the inner side formed by the non-slip ribs at both ends of the sheet member at positions closer to the outer ribs provided on the outermost edges and the outermost edges. It is characterized in that the ribs are formed in parallel with each other.
In the third aspect of the invention, the maintenance sheet of the fourth invention has holes for lashing formed in the portions surrounded by the outer non-slip ribs and the inner non-slip ribs on both sides of the sheet member in the width direction. It is characterized by.
The maintenance sheet of the fifth invention is characterized in that, in the first invention, the flexible material is rubber.

According to the first invention, since the seat member has flexibility, it can be transported in a compact state by being wound up, and it is easy to handle at a construction site. Further, even if there is a step between the work floor and the work floor, the gap can be eliminated by smoothly connecting the work floor. Furthermore, since it can be torn manually along the cut, the length can be easily adjusted according to the required gap length at the site.
According to the second invention, since the maintenance sheet can be restrained from moving by the non-slip rib when placed on the scaffolding plate, the gap between the scaffolding plates can be kept closed. Therefore, it is possible to reliably prevent a small part from falling.
According to the third invention, since the outer ribs and the inner ribs are provided at both ends of the seat member, the anti-slip effect is high and the displacement movement during use is unlikely to occur. In addition, since the required rigidity can be secured, the worker's feet do not fall into the gap.
According to the fourth invention, since the sheet member can be fixed to the scaffolding plate by passing a wire through the fixing hole, it is possible to surely prevent the sheet member from slipping off during use.
According to the fifth invention, since the sheet member can be made of rubber, it can be easily wound up and easily torn by hand.

It is a perspective view of the maintenance sheet A which concerns on one Embodiment of this invention. It is a top view of the maintenance sheet A shown in FIG. FIG. 2 is an enlarged front view taken along the line III-III in FIG. FIG. 2 is an enlarged sectional view taken along line IV-IV of FIG. FIG. 2 is an enlarged cross-sectional view taken along the line VV of FIG. FIG. 5 is an enlarged view of a portion of the VI-VI line in FIG. It is a use state explanatory drawing of the maintenance sheet A which concerns on this invention. It is explanatory drawing of the architectural scaffolding.

Next, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the maintenance sheet A of the present embodiment is strip-shaped and is composed of a flexible sheet member 1.
The length of the sheet member 1 is not limited, and the sheet member 1 is cut into an appropriate length and used as described later. In addition, because it uses a flexible material, it can be rolled up and rolled up, and can be stored and transported in a compact state. And when used, it can be easily rewound and flattened.

As the flexible material, any material may be used without particular limitation, but rubber is preferable as the material. This is because if it is made of rubber, the flexibility required for winding and rewinding can be obtained, and friction with the surface of the scaffold plate 10 does not occur and the scaffold does not move freely. Moreover, it is much lighter than steel. In addition, it is durable and can be used over and over again.

When rubber is used as the material, ethylene / propylene rubber is more preferable. This is because ethylene and propylene rubber have excellent workability, are inexpensive, and are easily available.

The width W (see FIG. 2) of the sheet member 1 is sufficient as long as it closes the gap g shown in FIG. 7 and is placed on the scaffolding plates 10 on both sides of the gap g. Therefore, although not limited numerically, about 20 to 50 cm is preferable, and 25 to 40 cm is more preferable.
When the width dimension W is less than 20 cm, it tends to fall into the gap g, and when the width dimension W is wider than 50 cm, it becomes heavy. Therefore, a width dimension W of 20 to 50 cm is preferable in the sense that the gap g can be reliably closed and weight reduction can be prevented. Further, when the width dimension W is 25 to 40 cm, the gap g can be closed even if the installation position is slightly deviated, and weight reduction can be achieved, which is more preferable.

The thickness t1 (see FIG. 3) of the sheet member 1 is preferably 1.5 to 5 mm, and more preferably 2.5 to 4 mm. If the thickness t1 is less than 1.5 mm, the shape retention is lost and it tends to fall into the gap g, and if it is thicker than 5 mm, it becomes too heavy. Therefore, 1.5 to 5 mm does not fall into the gap g, which is preferable in the sense that weight reduction can be prevented. Further, when the thickness t1 is 2.5 to 4 mm, it is more preferable because it is possible to prevent the worker's foot from falling even if the worker's foot rests on the gap g and to achieve weight reduction.

As shown in FIGS. 1 to 3, anti-slip ribs 2 are formed at both ends of the seat member 1. The non-slip rib 2 is composed of an outer rib 2a provided on the outermost edge of the seat member 1 and an inner rib 2b formed at a position closer to the inside from the outermost edge, and both ribs 2a and 2b are formed in parallel with each other. ..
Further, the non-slip rib 2 composed of a pair of the outer rib 2a and the inner rib 2b is similarly formed at both ends in the width direction of the seat member 1.

As shown in FIG. 3, both the outer rib 2a and the inner rib 2b are formed in a thick portion protruding vertically from both the front and back surfaces of the sheet member 1.
If the thickness t2 of both ribs 2a and 2b is about 1 to 3 mm larger on one side than the thickness t1 of the seat member 1, the anti-slip effect can be exhibited. Therefore, it is preferable that the front and back surfaces are about 2 to 6 mm thicker than the thickness t1 of the sheet member 1.
By increasing the thickness t2 in this way, it is possible to secure the rigidity required for the seat member 1 and prevent the worker's feet from falling into the gap g.

The width dimension w2 of the ribs 2a and 2b in the non-slip rib 2 may be about the same as the thickness t2.
As shown in FIG. 3, the cross-sectional shape of the ribs 2a and 2b may be a shape in which two ellipses are joined to each other, or may be a single ellipse or a quadrangle. However, it is preferable that the worker is not angular and rounded because it does not injure the worker.
Both the front and back surfaces of the ribs 2a and 2b in the non-slip rib 2 may be flat, but may have minute irregularities, polymorphic grooves, or the like. In that case, the frictional force with respect to the scaffolding plate 10 becomes high and it becomes difficult to slip.

As shown in FIGS. 1 to 3, the sheet member 1 is formed with cuts 3 at a plurality of intervals in the longitudinal direction.
The cut 3 extends in a direction perpendicular to the longitudinal direction of the seat member 1, that is, in the width direction, and is formed from one side edge to the other side edge.
It is preferable that the intervals between the cuts 3 and 3 are evenly spaced. This is because if the intervals are equal, it is easy to estimate the length of the sheet member 1 cut by the cut 3.
The distance d between the cuts 3 and 3 (see FIG. 2) is preferably 100 to 150 mm. This is because when the interval d is set, it is easy to match the length of the scaffolding plate 10.

The cut 3 is formed from both the front and back sides of the sheet member 1 toward the inside, and only the central portion in the wall thickness direction is left. The thickness t3 (see FIG. 6) of the remaining portion is 0.5 to 1.5 mm, preferably 0.8 to 1.2 mm. When the thickness t3 is in the range of 0.5 to 1.5 mm, the length of the sheet member 1 can be freely adjusted by tearing it from the cut 3 by hand. When the thickness t3 is 0.8 to 1.2 mm, it is possible to prevent an accident of being torn by itself and to be torn with a light force.

As shown in FIGS. 1 to 3 and 5, a lashing hole 4 is formed in the member surrounded by the outer rib 2a and the inner rib 2b of the sheet member 1.
In the figure, one lashing hole 4 is formed in the region surrounded by both ribs 2a and 2b and surrounded by the cut 3, but the present invention is not limited to this.
The lashing holes 4 may be formed every other square in the area surrounded by the cut 3.

The lashing hole 4 is used for lashing the sheet member 1 to the scaffolding plate 10 through a wire or the like. As shown in FIGS. 5 and 6, the periphery of the hole is reinforced by the thick portion 4a so that the hole is not damaged even through a wire or the like.
The inner diameter of the lashing hole 4 may be such that the work of passing a wire or the like can be easily performed. The size is preferably about 5 to 15 mm, but is not limited to this size.

As shown in FIG. 7, the maintenance sheet A of the present embodiment is used by placing it on the gap g between the long sides of the two scaffolding plates 10 and 10.
In this case, the following effects are achieved.
(1) Since the sheet member 1 has flexibility, it can be transported in a compact state by being wound up, and is easy to handle at a construction site.
(2) Even if there is a step between the work floor and the scaffolding plate 10, the work floor can be smoothly connected to the work floor, which makes it easier for the worker to work.
(3) Since it can be manually torn along the cut 3, the length can be easily adjusted according to the length required at the site.
(4) Since the maintenance sheet A can be restricted from moving by the non-slip rib 2 when placed on the scaffolding plate 10, the gap g between the scaffolding plates 10 can be kept closed. Therefore, it is possible to reliably prevent a fall accident of small parts such as tools and materials. In addition, the worker will not be caught in the gap g.
(5) Since the outer ribs 2a and the inner ribs 2b are provided at both ends of the sheet member 1, the anti-slip effect is high and the slipping off during use is unlikely to occur. Moreover, the required rigidity can be given to the maintenance sheet A.
(6) Since the sheet member 1 can be fixed to the scaffolding plate 10 by passing a wire through the fixing hole 4, it is possible to reliably prevent the sheet member 1 from slipping off during use.
(7) Since the sheet member 1 can be made of rubber, it can be easily wound up and easily torn by hand.

1 Sheet member 2 Non-slip rib 2a Outer rib 2b Inner rib 3 Cut 4 Fastening hole 10 Scaffolding board A Maintenance sheet

Claims (5)

It is a maintenance sheet that closes the gap between multiple scaffolding boards arranged next to each other.
It is a strip-shaped sheet member made of flexible material.
A maintenance sheet characterized in that cuts for tearing by hand are formed at intervals in the longitudinal direction of the sheet member. On both sides of the sheet member in the width direction
Extending in the longitudinal direction of the sheet member
The maintenance sheet according to claim 1, further comprising anti-slip ribs that are convexly projected from both the front and back surfaces of the sheet member. The non-slip rib
At each of both ends of the sheet member
The maintenance sheet according to claim 2, wherein the outer rib provided on the outermost edge and the inner rib formed at a position closer to the inner side from the outermost edge are formed in parallel with each other. On both sides of the sheet member in the width direction
In the part surrounded by the outer non-slip rib and the inner non-slip rib,
The maintenance sheet according to claim 3, wherein a lashing hole is formed. The maintenance sheet according to claim 1, wherein the flexible material is rubber.

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