JP2921403B2 - Seat stretching structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet extending structure for extending a sheet used for a unit scaffold at a construction site so as to be freely stored by a long sheet extending tool.

[0002]

2. Description of the Related Art Recently, in construction work, a unit scaffold is used without providing an enclosing scaffold, and the unit scaffold is raised one after another to perform construction work at a predetermined height. In order to prevent building members, work tools, and the like from falling from the unit scaffold under construction, a net sheet or the like is provided on the unit scaffold. Conventionally, a net sheet or the like is stretched by attaching a string or the like to a unit scaffold through an eyelet provided in the net sheet.

[0003]

By the way, if the net sheet is kept stretched even when the wind or the like becomes strong, a strong wind pressure may be applied to the net sheet, and the unit scaffold may be largely shaken, resulting in a dangerous state. Yes, there is a situation where it is necessary to remove the net sheet from the unit scaffold, but as described above,
If a net sheet or the like is stretched by inserting a string or the like into the eyelet hole, the removal work is extremely troublesome and takes time,
In addition, it is dangerous because it is high. Furthermore, when the net sheet is stretched again, the operation is also extremely troublesome and time-consuming.

[0004] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to enable a net sheet or the like to be easily stretched on a unit scaffold, and to be used when wind or the like becomes strong. It is an object of the present invention to provide a sheet extending structure capable of safely storing a net sheet or the like in a short time.

[0005]

According to the present invention, an object of the present invention is to provide a seat stretching structure in which a sheet used for a vertically movable unit scaffold is stretched by a long sheet stretching tool. The tensioning tool has a pair of a hole for receiving an enlarged portion formed at the edge of the sheet and a slit communicating with the hole and passing the edge of the sheet. Each of the enlarged portions of the edge is received in each of the holes of the sheet stretching tool, and a guide rope stretched vertically on the unit scaffold passes through each of the longitudinal ends of the sheet stretching tool. A U-shaped bracket is attached, one end of a hanging rope is connected to the uppermost sheet tensioner, and the hanging rope is hung over a pulley attached to the unit scaffold. The lower seat tensioner is the unit foot The coupling is accomplished by a sheet stretched structure being fixed.

In one embodiment of the present invention, the sheet is composed of a plurality of sheets, and these sheets are inserted into the holes of the intermediate sheet stretching tool disposed between the uppermost and the lowermost sheet stretching tools, and the edge of the hole is formed. The bulges are received and connected in series with each other via the intermediate sheet tensioner.

[0007] In the present invention, a U-shaped bracket through which another guide rope stretched in the vertical direction on the unit scaffold may pass may be attached to at least the middle portion in the longitudinal direction of the uppermost sheet stretching apparatus. In addition, the sheet is not limited to the mesh sheet, and may be a sheet with tight eyes.

[0008]

According to the seat stretching structure of the present invention, when the hanging rope is pulled on the unit scaffold, the uppermost sheet stretching tool connected to one end of the hanging rope is pulled up, and thus the sheet stretching is performed. The sheet having the enlarged portion inserted into the hole of the fixture at the edge is also pulled up and stretched. During the lifting, the sheet tensioning device is smoothly guided up and down at both ends by a guide rope via U-shaped brackets. Even after being stretched on the unit scaffold, the sheet stretching tool is held at both ends thereof by a U-shaped bracket so as not to flutter by the guide rope. If there is a possibility of strong wind, pull out the hanging rope, lower the uppermost sheet tensioning device, take in the sheet on the unit scaffold, fold the taken-in sheet as necessary, and use a rope etc. Secure to the unit scaffold.

Next, the present invention will be described in more detail based on preferred embodiments shown in the drawings. The present invention is not limited to these specific examples.

[0010]

1 to 5, a sheet stretching structure 4 of the present embodiment in which a plurality of sheets 2 used for a unit scaffold 1 are stretched by a long sheet stretching tool 3 is used. The fixture 3 is provided with holes 13, 1 for receiving the enlarged portions 11, 12 formed on the edges 9, 10 of the adjacent sheet 2, respectively.
4 and slits 15 and 16 which are communicated with the holes 13 and 14, respectively, and through which the edges 9 and 10 of the sheet 2 pass, along the longitudinal direction thereof. In this example, the hole 14 of the uppermost sheet stretching tool 3 and the hole 13 of the lowermost sheet stretching tool 3 are used.
Are not used for receiving the enlarged portion 12 of the sheet 2, respectively.

The plurality of sheets 2 are received in the holes 13 and 14 of the upper and lower sheet stretching tools 3 in which the enlarged portions 11 and 12 of the edges 9 and 10 are arranged at both ends. , The bulging portions 11 and 12 respectively correspond to the edge 9 of the sheet 2,
10 is made into a loop, and a rope etc. is inserted into it,
Edges 9 and 10 are formed by sewing.
4 is inserted into the holes 13 and 14 from the lateral end faces in the longitudinal direction. A U-shaped bracket 19 through which guide ropes 17 and 18 extending vertically in the unit scaffold 1 pass is attached to each of both ends in the longitudinal direction of the sheet stretching tool 3, and the uppermost sheet stretching tool. 3 has a hanging rope 2
0, 21 are connected to one end 22, 23, respectively, and the suspension ropes 20, 21 are respectively suspended around pulleys 24, 25 attached to the unit scaffold 1.
The lowermost sheet stretching device 3 is connected with a lashing belt 28 with a string or a buckle 27 that is inserted through a plurality of long holes 26 of the sheet stretching device 3 by being laid over a horizontal member 29 of the unit scaffold 1. Fixed.

The guide rope 17 has a thimble 3 at its upper end.
1, is attached to the horizontal member 34 at the upper end of the unit scaffold 1 via the shackle 32 and the bracket 33 (see FIG. 5 for the guide rope 18), and at the lower end, the thimble 35, the turnbuckle 36 and the bracket (not shown). Is attached to the lower end lateral member 29 of the unit scaffold 1 via the.
Similarly, the guide rope 18 has an upper end attached to the horizontal member 34 and a lower end attached to the horizontal member 29. By operating the turnbuckle 36, the guide rope 17
Can be adjusted (similarly for the guide rope 18). The turnbuckle 36 may be provided on the upper end side of the guide ropes 17 and 18. In the present example, the U-shaped bracket 19 is made of a shackle, and the pins 41 of the shackle are inserted into through holes 42 formed at both ends of the sheet stretching device 3,
It is connected to the sheet stretching device 3. Hanging rope 2
One end 22, 23 of each of the loops 0, 21
A shackle 51 is connected to the shackle 5.
Each of the pins 53 is inserted into a through-hole 54 formed in the sheet stretching device 3, and the hanging ropes 20, 21
Are connected to the uppermost sheet stretching device 3.

Each of the hanging ropes 20, 21 is
The pulleys 24 and 25 are attached to the unit scaffold 1, and each of the pulleys 24 and 25 is attached to the ring 6.
3 and is attached to the horizontal member 34 at the upper end via the shackle 64.

A U-shaped bracket 72 (see FIG. 4) formed of a U-bolt or the like through which another guide rope 71 stretched in the vertical direction on the unit scaffold 1 passes at the intermediate portion in the longitudinal direction of the sheet stretching device 3 of this embodiment. 6) is attached, and the guide rope 7
1 has the upper end attached to the horizontal member 34 and the lower end attached to the horizontal member 29 in the same manner as the guide ropes 17 and 18. As shown in FIG. 6, the U-shaped fitting 72 has its both ends penetrating through the elongated holes 26 formed in the sheet stretching tool 3 and extending in the longitudinal direction, and is screwed to the stopper plate 76, and the U-shaped fitting 72 is screwed to the sheet stretching tool. 3 is fixed.

A large number of unit scaffolds 1 are arranged around a skeleton at a construction site, are lifted by a crane or the like in accordance with the assembly of the skeleton, and are fixed to the skeleton by a fixing device 81 or the like on the way. The uppermost step 82 of the unit scaffold 1 is telescopic with respect to the lower scaffold and is extendable and contracted slightly upward in the assembling work of the frame on the top floor.

In the above-described sheet stretching structure 4, when the hanging ropes 20, 21 are pulled by an operator on the unit scaffold 1, the uppermost sheet stretching tool 3 is lifted, and the uppermost sheet stretching tool 3 is moved together therewith. The sheet 2 connected to the sheet stretching tool 3 and the sheet 2 connected to the sheet 2 via the intermediate sheet stretching tool 3 are lifted and stretched on the front surface of the unit scaffold 1. After all the seats 2 are completely stretched, a lashing belt 28 with a buckle 27 or a rope is passed through the plurality of long holes 26 of the uppermost sheet stretching tool 3 to be passed through the lateral members 34 of the unit scaffold 1. And pull it to secure all the sheets 2 so that they are taut. If the wind or the like becomes strong, remove the lashing belt 28 with a buckle or a rope, etc.
Loosen 1 and lower all seats 2, unit scaffold 1
Fold it up.

When a vertically long sheet 2 is used, a lashing belt 28 with a buckle 27 is sewn at appropriate positions on both ends of the sheet 2 as shown in FIG. And the both ends are stopped by a buckle 27, and in some cases, the sheet 2 is pulled by a lashing belt 28 and then stopped by the buckle 27 so that the middle part of the sheet 2 does not flutter. You may make it tension also about a horizontal direction. Further, as shown in FIGS. 4 and 7,
The lashing belt 28 with the buckle 27 is passed through the long hole 26 and the stopper plate 85 prevents the lashing belt 28 passed through the long hole 26 from coming off. The both ends may be stopped by the buckle 27.

The holes 42 and the long holes 26 may be provided on the sheet stretching tool 3 in such a manner that a plurality of the holes 42 and the long holes 26 are arranged at equal intervals in the longitudinal direction as necessary.

In order to raise the uppermost portion 82 of the unit scaffold 1, the turnbuckle 36 or the like may be operated, but the uppermost sheet tensioning device 3 is removed from the horizontal member 34 and reattached. Takes a long time, and the workability may be poor. Therefore, as shown in FIG. 8, at least one sheet 2 has an enlarged portion 9 similar to the enlarged portions 11 and 12.
The sheet pieces 93 and 94 having the first and the second 92 are sewn, and the enlarged portions 91 and 92 are received in the holes 13 and 14 of the sheet stretching tool 3, and the sheet pieces 93 and 94 are interconnected to the sheet stretching tool 3. Then, the sheet 2 may be provided with a slack portion 95 in advance, and when the uppermost portion 82 rises, the sheet stretching tool 3 may be removed so that the sheet 2 is stretched. By doing so, workability is extremely improved.

[0020]

As described above, according to the present invention, a net sheet or the like can be easily stretched on a unit scaffold, and when a wind or the like becomes strong, the net sheet or the like can be safely mounted in a short time. You can put it away.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a preferred embodiment of the present invention.

FIG. 2 is a side view of the specific example shown in FIG.

FIG. 3 is a detailed explanatory view of a tensioning tool, a sheet, and the like of the specific example shown in FIG. 1;

FIG. 4 is a partially enlarged detailed explanatory view of the specific example shown in FIG. 1;

5 is a partially enlarged detailed explanatory view of the specific example shown in FIG. 1, (a) is a side view, and (b) and (c) are front views.

FIG. 6 is a partially enlarged detailed sectional view of FIG. 4;

FIG. 7 is a partially enlarged detailed cross section of FIG. 4;

FIG. 8 is an explanatory diagram of a sheet stretching mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit scaffold 2 Seat 3 Seat stretching tool 4 Seat stretching mechanism 17, 18 Guide rope 20, 21 Hanging rope 19 U-shaped bracket 24, 25 Pulley

Claims (3)

(57) [Claims] 1. A sheet stretching structure in which a sheet used for a vertically movable unit scaffold is stretched by a long sheet stretching tool, wherein the sheet stretching tool is formed at an edge of the sheet. The sheet has a pair of a hole for receiving the enlarged portion and a slit communicating with the hole and through which the edge of the sheet passes, and the sheet has the enlarged portions on both edges thereof arranged at both ends thereof. U-shaped fittings are installed in each of the longitudinal ends of the sheet stretching device, and guide ropes vertically stretched on the unit scaffold are passed through the holes of the upper and lower sheet stretching devices. One end of the hanging rope is connected to the uppermost sheet tensioner,
The hanging rope is hung over a pulley attached to the unit scaffold, and the lowermost sheet stretching device is connected to and fixed to the unit scaffold. 2. A sheet comprising a plurality of sheets, these sheets being disposed between the uppermost and lowermost sheet stretching members,
Each of the holes of the intermediate sheet stretching tool having a pair of a hole for receiving the enlarged portion formed at the edge of the sheet and a slit communicating with the hole and passing the edge of the sheet. The seat extending structure according to claim 1, wherein each of the enlarged portions of the edge portion is received and connected in series with each other via the intermediate sheet extending tool. 3. A U-shaped fitting through which another guide rope stretched in the vertical direction on the unit scaffold passes through at least an intermediate portion in the longitudinal direction of the uppermost sheet stretching tool. The sheet stretching structure according to 1.