JPH06294219A - Developing method of disaster prevention safety mesh sheet - Google Patents

Abstract

PURPOSE:To simply develope a sheet by fixing a fitting tool to a frame member of a scaffold, providing eyelet holes on sheath-like parts formed up and down both end parts of a mesh sheet, and insertedly fitting the lock piece of the fitting tool into the eyelet hole. CONSTITUTION:The end parts of a mesh sheet are folded back and the folded back joining parts are combined with the sheet main body so as to form sheath- like parts, reinforcing material is inserted the sheath-like part, and eyelet holes are provided on the sheath-like parts, so as to form the connecting end of the mesh sheet. The pinchedly holding body 12 of a fitting tool is opened so as to pinchedly hold the frame member 20 of a framework scaffold, a bolt 16 is fitted into the cutout of the pinchedly holding body 12, fastend with a nut 21, and the fitting tool 9 is fixed to the frame member 20. The eyelet hole 3 of the mesh sheet is insertedly fitted to the hook-like lock piece 18 of the fitting tool 9, and hence the mesh sheet is fixed to the frame member 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for expanding a disaster prevention safety mesh sheet by detachably fixing the special disaster prevention safety mesh sheet to a frame scaffold at a construction site by using a special connecting tool.

[0002]

2. Description of the Related Art A sheet having a large area is required to cover a construction site or the like, but the sheet swells or flaps due to wind pressure, which is extremely dangerous for an operator. Conventionally, it is tied at a fixed position and is tied to a framework such as a scaffold by ropes or the like that pass through the eyelet holes of the seat to prevent bulging. This method has a drawback that wrinkles are generated in the sheet when the sheet is stretched because tension is not uniformly applied to the sheet, and that it takes time and labor to stretch the sheet. Moreover, the danger cannot be eliminated because the rope is cut or loosened by the wind with high wind speed. Japanese Patent Application Laid-Open No. 4-238968 discloses a first hole that slidably receives an enlarged portion formed at the outermost edge portion of a sheet, and the first hole is connected to the first hole. And a first slit through which the edge of the sheet can be inserted. In addition, there is a PKW0005-15 invention that the present inventor applied for earlier.
This invention folds the upper and lower ends of the mesh sheet to be connected, respectively, and joins the folded ends with the main body of the mesh sheet to form a sheath-shaped portion, and the sheath-shaped portion has a plurality of connecting portions along the width direction. Also, the invention is an easy-expanding disaster prevention and safety mesh sheet having eyelet holes for attachment, and a method of expanding the mesh sheet, in which a sheath portion for inserting a reinforcing material is directly formed on the mesh sheet.

[0003]

[Patent Document 1] Japanese Patent Application Laid-Open No. 4-23896
The seat tensioner of No. 8 has an advantage that it can be easily connected from the fact that it is tied down with a rope, but it is not yet satisfactory. That is, since the spreading tool itself bears the weight of the mesh sheet, it is necessary to bear the weight of the entire stretched mesh sheet, which requires great strength, and therefore the weight becomes very large. For example, a practical hard vinyl chloride resin connector has a width of 4.3.
cm, and the length is 179.5 cm, and each one weighs 1.3 kg. The mesh sheet has a width of 180 cm and a length of 51
Since it is 0 cm, 10 mesh sheets must be connected to cover the construction site with a height of 51 m. Therefore, the upper connecting tool must support 10 sheets and 11 connecting tools, and must withstand a tension of 65 kg. Therefore, it is inconvenient to handle and assemble as it is heavy. Is. That is, this sheet stretcher tends to be deformed by a load or the like during use, so that a large portion of a sheet to be inserted does not easily pass therethrough, resulting in poor insertion and removal. Also, when the sheet gets wet with rain, the rope built into the ampullate part swells due to water and becomes thicker, making it difficult to pass through the holes, and as a result, it becomes difficult to pass the ampullate part of the sheet through the spreader. In addition, the extender itself is heavy and long, making it difficult to handle at high altitudes. And this invention cannot solve the problem caused by the wind of the seat. In these prior arts, the mesh sheets are connected and fixed to the frame member by binding them with ropes that pass through eyelet holes, so not only is it troublesome, but there is a large tendency to loosen during use. The present invention simply and surely spreads the disaster prevention and safety mesh sheet by using a special attachment.

[0004]

Means for Solving the Problems The present invention is directed to “1. (A) A cross section composed of an upper plate having an arcuate notch for fitting with a frame material of a frame scaffold, a lower plate and a wall plate connecting one ends thereof. The base of the holding body of the frame is rotatably supported by a connecting pin on one end of the U-shaped fixture body and one of the arcuate notches of the upper and lower plates, and the upper and lower plates are supported. A tightening bolt is rotatably supported by a pin on the other end of the arc-shaped cutout of the plate, a fitting recess for the tightening bolt is provided at the end of the holding body of the frame material, and a nut is attached to the end of the tightening bolt. (B) Fitting an arcuate notch in the frame material of the frame scaffolding, and holding the tightening bolts. Insert it into the fitting recess of the body tightening bolt and tighten it with the nut to fix the fixture to the frame material, and (C) connect the mesh sheets. A sheet-like sheath is formed at both lower ends, eyelet holes are arranged in the mesh sheet body or the sheath at the lower end of the sheath, and a reinforcing material is inserted into the sheath (D) Disaster prevention and safety Disaster prevention and safety mesh sheet, characterized by inserting and fastening the eyelet holes of the seat into hook-shaped locking pieces of a fixture that is fixed to the frame material, and sequentially fixing the disaster prevention and safety seat to the frame material of the frame scaffolding 2. The method for expanding the disaster prevention safety mesh sheet according to item 1, wherein the U-shaped cross-section of the fixture body with a U-shaped cross section is used 3. The nut screwed on the tip of the tightening bolt is used. 4. A method for spreading the disaster prevention and safety mesh sheet according to item 1 or 2, which is a wing nut 4. The hook-like locking piece installed in the fixture is one locking piece, 1 to 3 The method for spreading the disaster prevention and safety mesh sheet according to any one of items. 5. The hook-like locking piece installed on the fixture is a pair of locking pieces facing in the same direction.
The method for spreading the disaster prevention and safety mesh sheet described in paragraph. 6. The disaster prevention and safety mesh sheet folds both upper and lower end portions of the mesh sheet to be connected, and folds the folded end portions to the main body of the mesh sheet to form a sheath-shaped portion, and a plurality of sheath-shaped portions are formed in the sheath-shaped portion along the width direction. The method for spreading a disaster prevention and safety mesh sheet according to any one of items 1 to 5, which is an easy-expansion disaster prevention and safety mesh sheet provided with connection and attachment eyelets. 7. The disaster prevention safety mesh sheet has (A) upper and lower ends with a slack in the central portion of the sheet prepared separately (B) on the side surface of the folded portion where the upper and lower end portions of the mesh sheet to be connected are folded and joined to the sheet body. Is joined to the folded end of the mesh sheet to form a sheath-like portion, and (C) the sheath-like portion to be joined to the mesh sheet is provided with a plurality of eyelet holes for connection and attachment along the width direction. Any one of items 1 to 5 which is a stretchable disaster prevention safety mesh sheet 1
The method for spreading the disaster prevention and safety mesh sheet described in paragraph. 8. The disaster prevention and safety mesh sheet has (A) the top and bottom ends of the mesh sheet to be connected to the folded back sheet body, and (B) separately prepared two folded sheets across the folded back end of the mesh sheet. And the skirt portion of the sheet placed with a gap between the folded portion and the tip of the folded portion is joined to the joint portion of the folded portion and the mesh sheet to form a sheath-like portion, and (C) the folded mesh sheet The method for spreading the disaster prevention and safety mesh sheet according to any one of items 1 to 5, which is an easy-expansion disaster prevention and safety mesh sheet having eyelet holes at the joint part. 9. (A) After connecting all or part of the required number of safety mesh sheets in advance, pass the rope through the eyelets for fixing both widthwise portions of the uppermost sheet, and connect the other end of the rope to the upper frame. Hang it down and hang it down,
(B) A plate-shaped lobe support having a concave guide groove on the outer peripheral surface for guiding the rope installed on the substrate, and a rope guide groove urged by a spring toward the rope introduction port of the guide groove Of a rope locking plate having a rope locking claw facing each other and a rope locking plate having a rope locking plate formed between the guiding groove and the locking claw pressed by a spring. With the locking claws, the rope is pressed against the guide groove and fixed, and the mesh sheet does not go down, making it a suspended state,
(C) The other end of the rope adjusting device is connected and fixed to a fixing material, and (d) the mesh sheet is stretched by pulling the rope downward, and the rope is pulled up to the upper stage of the frame scaffolding. Item 1 to Item 8, characterized in that the eyelet hole is inserted into a hook-shaped locking piece of a fixture that is fixed to the frame member and is detachably fixed to the frame member of the frame scaffold. How to spread the listed disaster prevention safety mesh sheet. Regarding

[0005]

[Function] The disaster prevention and safety mesh sheet is spread on the frame scaffolding at the construction site, and is used for the purpose of preventing the fall of material, the spark of welding, the scattering of paint, etc. from hitting general passersby. Because it receives wind pressure, it must be securely fixed to the frame so that it does not swell or flap. In addition, the appearance of the spread is also important, and if the appearance is not good, it will cause discomfort to residents and passersby near the construction site. Further, since the spreading work is performed on a narrow and high frame scaffolding, the mesh sheet is required to be light in terms of workability. It is also important that the connection and installation be easy.

The first feature of the present invention is to use a mounting tool which can be removably mounted on the frame member. This fitting is one in which the frame material is fitted in the fitting recess, held by the holding body and fastened to the frame material with bolts and nuts and fixed. . A hook-shaped engaging piece for inserting the eyelet hole of the mesh sheet is arranged in this fixture.

A second feature of the present invention is a special Mensch seat in combination with this fitting. This mesh sheet is directly formed on the mesh sheet main body at both upper and lower ends, but a sheath is formed by a separately prepared sheet, and a reinforcing material is inserted into the sheath to give rigidity, and It is a mesh sheet in which eyelet holes are arranged near the side base portion or in the sheath portion. In this mesh sheet, the weight of the sheet is supported by the sheet itself, not by the reinforcing material. The reinforcing material has a function of giving rigidity to the sheet. Since the connecting portion is a sheath-shaped portion composed of a sheet, and the reinforcing material is a rigidity-imparting material formed of metal or synthetic resin, the structure of the mesh sheet is simplified, and the weight is small and easy to handle. .

The third feature of the present invention is the spreading method. The fitting is arranged at a predetermined position of the frame material, and the eyelet hole of the sheet is hooked on the hook-shaped locking piece of the fitting to extend. In this way, since the eyelet hole is simply hung on the locking piece and fixed by it, the expansion is very easy. When a fixture having a pair of locking pieces is arranged at the locking position at the widthwise end of the seat,
Since the eyelet holes at the ends of the sheets to be spread next to each other can be hooked by the other locking piece, the number of fixtures can be reduced. The hook-shaped locking piece needs to face upward when locking the upper end of the sheet, and faces downward when locking the lower end. In addition, a pair of locking pieces facing in the same direction and a pair of locking pieces facing in the opposite direction may be provided in one mounting tool to fix the corners of four sheets with one mounting tool. In addition, the mounting tool can be attached to the frame member in the lateral direction by changing the installation direction of the locking piece.

A fourth feature of the present invention is that the seat is lifted in a state of being stretched from the bottom to the top and hooked on the locking piece of the fixture. If you want to lift and stretch the sheet while unfolding it from below, you can stretch it without tension by pulling the sheet with tension. To do this, connect the required number of sheets in advance, for example, all or a part of the sheets, pass the rope through the eyelet holes of the uppermost sheet, hang it on the upper frame material and hang it down, and pull the rope to lift it. It can be pulled up in the closed state. It is extremely dangerous to lift and extend in such an expanded state, because if the rope is pulled unevenly or if it is removed from the hand, the sheet will fall.
However, depending on the construction site, it may be necessary to lift and spread the product in the unfolded state. To prevent the risk of the sheet falling, and to lift and spread the sheet in the expanded state,
It is preferable to use the master rope adjuster described in JP-A-86869. The spreading method using this device is as follows.

(A) After connecting all or some of the required number of safety mesh sheets in advance, the rope is passed through the eyelets for fixing at both widthwise portions of the uppermost sheet, and the other end of the rope is connected. This rope is hung downwardly over the upper frame material, and (b) a plate-shaped rope support body having a concave guide groove on the outer peripheral surface for guiding the rope installed on the substrate, and a rope for the guide groove of the support material by a spring. Formed between the guide groove and the spring-loaded locking pawl of the rope adjusting device comprising a rope locking plate having a rope locking pawl facing the rope guiding groove biased toward the introduction port of It is inserted into a guide passage narrower than the diameter of the rope and fixed by pushing the rope into the guide groove with the locking claws so that the mesh sheet does not go down.
(C) The other end of the rope adjusting device is connected and fixed to a fixing material, and (d) the rope is pulled downward to pull up the mesh sheet to the upper stage of the frame scaffolding for extension. .

According to such a spreading method, there is provided a support body having a guide groove, and a rope locking claw opposed to the rope guide groove urged by a spring in the guide groove direction of the support material by a spring. Insert the rope into the guide passage narrower than the diameter of the rope formed between the rope locking plates and press the rope into the guide groove with the locking claws to fix it.The locking claw will spring toward the guide inlet of the guide groove of the support material. Since the rope is urged by, the mesh sheet will not drop because the rope is strongly pressed against the guide groove to prevent pulling out when the rope is pulled toward the inlet. When the rope is pulled in the exit direction, the rope locking plate is released from the bias of the spring, so it can be pulled out easily, and there is no effect on the pulling up of the mesh sheet.

[0012]

EXAMPLES Next, the present invention will be specifically described by showing examples.

FIG. 1 shows a connecting portion of a mesh sheet used in the present invention. Reference numeral 1 forms the sheath 5 by folding back the end of the mesh sheet and connecting it to the sheet body at 2.
The mesh sheet is a mesh sheet in which the reinforcing material 6 is inserted into the sheath portion and the eyelet holes 3 are provided to form a connecting end. When connecting the sheets, they are connected to the eyelet holes of the upper and lower sheets through the connecting tool 4 such as a band, but when connecting to the frame material of the frame scaffold, the connecting tool is inserted into the eyelet holes and connected. The eyelet holes may be provided in the seat connecting portion 2 instead of the sheath portion. The eyelet hole at the end is to insert the locking piece of the fixture provided on the frame agent. This mesh sheet has a characteristic that the reinforcing material imparts rigidity and the sheet itself bears the weight of the sheet, so that the sheet is light and easy to handle and can be easily connected.

FIG. 2 shows an embodiment in which a sheath portion is separately formed and joined to the side surface of the end portion of the mesh sheet. 5 is another sheet folded back, the folded portion is connected to the end 2 of the mesh sheet at 8, the reinforcing material 6 is inserted through the sheath, and the eyelet hole 4 is provided. In this example, the end of the mesh sheet is folded back, but if the mechanical strength of the mesh sheet is large, it is not necessary to fold it back.

FIG. 3 shows an embodiment in which the skirt portion 7 of the separately prepared sheath portion 5 is placed by sandwiching the end portion of the mesh sheet and joined by 8. A reinforcing material 6 is inserted in the sheath portion.
In this example, the eyelet hole 4 is provided below the sheath.
According to the examples of FIGS. 2 and 3, the mesh sheet sheath portion which is conventionally used can be provided.

FIG. 4 illustrates the fixture used to secure the mesh sheet to the frame material in the present invention. Reference numeral 9 denotes a fixture main body having a U-shaped cross section. A base end portion 13 of a frame material holding body 12 is provided with a connecting pin 14 at one end of the notch of the upper plate 11 and the lower plate 10.
Is rotatably supported by. The other end 19 of the holding body
A fitting recess for the tightening bolt is provided in the. A tightening bolt 16 is rotatably supported by a pin 15 on the other notched tip 11 of the upper and lower plates. A hook-shaped locking piece 18 for inserting the eyelet hole of the sheet is arranged on the wall plate 17 of the fixture body. Reference numeral 19 is a nut screwed on the bolt. The sheath and the reinforcement are not shown.

FIG. 5 shows the attachment 9 attached to the frame member 20 of the frame scaffold and the eyelet holes 3 of the mesh sheet inserted into the locking pieces 18. The holding body 12 is opened, the frame member 20 is inserted into the notches of the upper and lower plates, the bolt 16 is fitted into the notch of the holding body, and the nut 21 is tightened and fixed. In this example, the hook-shaped locking piece 18 is a downward hook, and the saddle hole 3 at the lower end of the mesh sheet is inserted therein.

FIG. 6 shows a rope adjusting device used in the present invention. A rope support 22 provided with a concave groove for guiding a rope is sandwiched and fixed to two substrates 23 and 24, and a rope locking plate 26 is provided at a position above the rope support in plan view as the substrate 23. 24 is rotatably supported by a pin 25 and is provided with a rope locking claw 27 on the end face facing the concave groove of the locking plate. The rope locking plate has one end supported by a support plate. By connecting one end of the biasing spring 28, the locking plate 26 is biased toward the guide groove of the rope support plate 22 to form a rope guiding passage smaller than the diameter of the rope between the groove and the locking claw. There is. Further, a rope is connected to the end of the substrate as a fixture. This rope adjustment device connects the fixture to the support material and lowers the towing rope downward by holding the locking plate with the biasing spring and pulling the rope through the rope guiding passage between the concave groove and the locking pawl. , The rope is pulled out from the guide passage by pushing down the locking plate. When the towing is stopped, the locking claw of the locking plate, which is biased by the spring, approaches the groove and tightens the rope. When the rope is pulled in the opposite direction, the tightening becomes strong and the rope stops. With such a structure, when the mesh sheet is spread and lifted from below as shown in FIG. 7, the mesh sheet does not drop even if the rope is released or loosened, which is extremely safe.

FIG. 7 shows an example of the spreading method, in which 20 is an upper frame member and 29 is a fixing member for the adjusting device. A pulling rope is passed through the eyelet holes of the mesh sheet and pulled up from the bottom to be lifted. Of course, it is also possible to hang it down from the top one after another.

[0020]

According to the present invention, a mesh sheet having a special structure that is lightweight and has a high rigidity is attached to a frame scaffold by a fixture arranged on a frame member and is stretched. Therefore, it is easy to handle and can be quickly stretched. It has the effect of preventing the occurrence and sagging.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the connection of mesh sheets in the present invention.

FIG. 2 is a cross-sectional view along a weft showing a connecting sheath portion of a mesh sheet of another example used in the present invention.

FIG. 3 is a sectional view of a sheath portion of another example.

FIG. 4 is an explanatory view of a mesh sheet attachment used in the present invention.

FIG. 5 is an explanatory view showing a state in which a fixture is fixed to a frame material and a mesh sheet is joined.

FIG. 6 is an explanatory diagram of a rope adjusting device used in the present invention.

FIG. 7 is an explanatory view showing a case where the disaster prevention and safety mesh sheet is unfolded from the bottom, lifted, and stretched.

[Explanation of symbols]

 1 Sheath-like part at the end of mesh sheet 2 Folded joint part 3 Eyelet hole 4 Connecting tool 5 Sheath-like part 6 Reinforcing material 7 Skirt part 8 Sheath joint part 9 Mounting tool 10 Lower plate 11 Upper plate 12 Frame material holding body 13 Holding body Base end 14 Connection pin 15 Pin 16 Bolt 17 Wall plate 18 Locking piece 19 Clamping body end 20 Frame material 21 Nut 22 Rope support 23 Board 24 Board 25 pin 26 Rope locking plate 27 Rope locking claw 28 Energizing Spring 29 fixing material

Claims (9)

[Claims] 1. A fixture main body having a U-shaped cross section, comprising: (A) an upper plate having an arcuate notch for fitting with a frame material of a frame scaffold, a lower plate, and a wall plate connecting one end thereof. , The upper end of the upper plate and the lower plate of the arc-shaped notch is rotatably supported by the connecting pin at the base end of the holding member of the frame member to the other end of the arc-shaped notch of the upper plate and the lower plate. A tightening bolt is rotatably supported by a pin at the tip, a fitting recess of the tightening bolt is provided at the tip of the holding body of the frame material, a nut is screwed at the end of the tightening bolt, and the wall board is (B) Fitting fixtures with hook-shaped locking pieces facing upward or downward, arc-shaped notches are fitted to the frame material of the frame scaffold, and the fastening bolts are held in the holding bolts of the holding body. And fix the fixture to the frame material by tightening it with a nut, and (C) a sheath at the upper and lower ends where the mesh sheet is connected. Part is formed and a eyelet hole is arranged in the mesh sheet main body or the sheath portion at the lower end of the sheath portion, and a reinforcing material is inserted into the sheath portion (D). A method for spreading a disaster prevention safety mesh sheet, characterized by inserting the hook-shaped locking piece of a fixed fixture and sequentially fixing the disaster prevention safety sheet to the frame material of the frame scaffold in a detachable manner. 2. The method for spreading a disaster prevention and safety mesh sheet according to claim 1, wherein the fixture body having a U-shaped cross section has a U-shaped cross section. 3. The method for spreading the disaster prevention and safety mesh sheet according to claim 1, wherein the nut screwed on the tip of the tightening bolt is a wing nut. 4. A hook-shaped locking piece installed in the fixture,
The method for spreading the disaster prevention and safety mesh sheet according to any one of claims 1 to 3, which is one locking piece. 5. The disaster prevention and safety mesh sheet according to any one of claims 1 to 3, wherein the hook-shaped locking pieces installed on the fixture are a pair of locking pieces oriented in the same direction. Method. 6. A disaster prevention and safety mesh sheet is folded back at both upper and lower end portions to be connected to each other, and the folded back end portions are joined to the main body of the mesh sheet to form a sheath-shaped portion, and the sheath-shaped portion has a width direction. The easy-expanding disaster prevention safety mesh sheet having a plurality of connecting and mounting eyelets arranged along it.
The method for spreading the disaster prevention and safety mesh sheet described in paragraph. 7. The disaster prevention and safety mesh sheet has (A) a side portion of a folded portion where the mesh sheet upper and lower end portions to be connected are folded and joined to the sheet body, and (B) a slack is provided in the central portion of the sheet prepared separately. Hold it and join the upper and lower ends to the folded back end of the mesh sheet to form a sheath-like part,
(C) The easily expandable disaster prevention safety mesh sheet according to any one of claims 1 to 5, wherein a plurality of eyelets for connection and attachment are provided along a width direction in a sheath-shaped portion coupled to the mesh sheet. The method for spreading the disaster prevention and safety mesh sheet described in paragraph. 8. The disaster prevention and safety mesh sheet is a mesh sheet prepared by (A) separately preparing upper and lower ends of the mesh sheet to be connected to the folded sheet body, and (B) separately prepared at the tip of the folded section. The skirt part of the sheet placed by straddling the folded-back end of the sheet and having a space between the folded-back part and the tip of the folded-back part is coupled to the joint part of the folded-back part and the mesh sheet to form a sheath-shaped part. ) An easily expandable disaster prevention safety mesh sheet having eyelet holes provided at the joints of the folded mesh sheets.
The method for spreading the disaster prevention and safety mesh sheet according to any one of 1. 9. (a) After connecting all or some of the required number of safety mesh sheets in advance, pass the rope through the eyelets for fixing at both widthwise portions of the uppermost sheet, and then the ropes (B) A plate-shaped rope support body having a concave guide groove on the outer peripheral surface for guiding the rope installed on the substrate, and a guide groove for the support material by a spring. Between the guide groove and the spring-loaded locking claw of the rope adjusting device including a rope locking plate having a rope locking claw facing the rope guiding groove biased toward the rope introduction port of The rope is inserted into a guide passage narrower than the diameter of the formed rope and fixed by pushing the rope into the guide groove with the locking claws so that the mesh sheet does not go down. (C) The other end of the rope adjusting device (D) Low Pull the mesh downward to pull up the mesh sheet and pull it up to the top of the frame scaffolding.
The eyelet hole of the disaster prevention / safety sheet is inserted into a hook-shaped locking piece of a fixture fixed to a frame member to be detachably fixed to the frame member of the frame scaffold. The method for spreading the disaster prevention and safety mesh sheet according to item 1.