JP3306861B2 - Net for working at height - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walkable high place work net which is erected at a high place when working on a high place such as a temporary suspension bridge or a wooden building or building.

[0002]

2. Description of the Related Art Hitherto, a safety net has been known for preventing a worker from falling down. Such a safety net is knitted in a synthetic resin mesh and aims at absorbing a shock at the time of falling. When this is used as a scaffold for work at height, it is unstable because the foot is caught. For this reason, the applicant of the present application has proposed a safety net for working at a high place where a scaffolding band is arranged on a lattice on the upper surface of a mesh-like net in Japanese Utility Model Publication No. 7-52288, and which can walk on the net. I have. In this safety net for working at heights, the scaffold strips arranged in a grid have a width that allows a person to walk, so that a worker can walk stably when walking on the net. . By the way, conventionally, as a scaffold for working at a high place in such a work site or the like, it is common to form a support frame formed by assembling iron pipes and fix a floor plate serving as a scaffold to the support frame. However, such a temporary scaffold transports iron pipes and floorboards, which are the framework of the scaffold, to the work site and assembles it at the work site, so that the assembling work and removal are troublesome and troublesome. In this regard, if the above-mentioned safety net is used as a scaffold for working at heights, the foldable safety net can be easily transported, and the net can be stretched on a rope (wire rope, etc.) that was erected during installation. It is very easy to install and easy to remove. However, as described above, the safety net is capable of walking by an operator, but since the main purpose is to prevent the worker from falling, it is necessary to extend the safety net over a relatively wide range. . Therefore, when it is used only as a scaffold for working at height, it is necessary to secure an unnecessary mounting space, and there are many wasteful surfaces. Further, even if the safety net is formed to have a small size that allows a worker to walk, simply walking on a flatly stretched safety net may cause a fall from the safety net.

[0003] An object of the present invention is to provide a net for working at heights that can safely walk when used as a scaffold for working at heights by solving such problems.

[0004]

According to a first aspect of the present invention, there is provided an aerial work net for extending an aerial work net between a pair of spaced-apart supporting portions, wherein a walkable scaffold net is provided. A pair of left and right fall prevention nets are connected to both sides of the work net to form a U-shaped work net as a whole, and the scaffold net is made of a synthetic resin rope.
Consists knitting nets superimposed plurality, closely knitted Then preparative than the upper surface side of the net lower side of the net
In addition, the surface of the net on the upper surface side
Provide a walking belt over the entire length, and on the back of the lower side net
A plurality of plates for holding the scaffold net;
Parallel to the width direction of the
At a predetermined interval, the hanging rope is fixed integrally to the
Fixing the connecting bracket on the upper and lower sides of the hanging rope, respectively,
Connection fittings provided with lower connection fittings at both ends of the plate
And connecting the scaffold net between the support portions.
A pair of right and left ropes to be suspended, and the
A pair of right and left ropes that support the rate are stretched, and the upper side
Connection rope provided with a rope located at the upper side of the suspension rope
And pull the rope located at the bottom
Through the connecting means provided at both ends of the
The support member is configured to extend between the support portions .

[0005] The net for working at heights is used as a scaffold for working at heights such as a temporary suspension bridge or a wooden building or a building, and a lightweight and foldable net is used as a footing for working at heights. It is easy to transport to the site. Further, the net for working at heights can be expanded simply by connecting to the ropes passed over the support portion, and the work for erection or removal of the nets for working at heights on site is easy, and the construction period can be significantly reduced. Furthermore, even if the scaffold net is formed narrow enough to be able to walk, the fall can be reliably prevented because the pair of left and right fall prevention nets is provided on both sides of the scaffold net.

Further , the walking band prevents the foot from being caught on the scaffolding net, and even if the user walks on a portion other than the walking band, the foot on the upper surface side is densely knitted, so that the foot is not knitted. You can walk stably without getting out. Further, by forming the scaffolding net with a multilayer structure, a strength capable of withstanding a load can be obtained.

Furthermore, since the scaffold net is held in a state stretched by the plate, walkable, also, the time of walking, the foot also with stable, to support the plate to hold the scaffold nets Tsunasaku Thereby, the roll of the scaffold net can be suppressed, and more stable walking can be achieved. In addition, hanging rope and-flops of fall prevention net
Connections through four ropes passed over the support on the rate
By installing the fittings and connecting means, the rope
Pull along the scaffold net while dragging it along the rope
Easy installation or removal of the scaffolding net
Can be.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. The high work net 1 includes a walkable scaffold net 2 and a pair of left and right fall prevention nets 3,3.
And is formed in a U-shape as a whole. The scaffolding net 2 is a walking band spanning the entire length of the upper and lower two nets 4 and 5 and the scaffolding net 2 integrally fixed to the surface of the upper surface net 4 by appropriate means such as welding or bonding. 6
Consists of

The upper and lower nets 4 and 5 are respectively made by knitting synthetic resin ropes in a mesh shape, but the upper surface net 4 is densely knitted. In other words, the upper surface net 4 has a side of about 1 to 10 mm on one side of the mesh, and is preferably 3 so that the worker can easily walk without catching his feet.
下面 5 mm, while the lower surface net 5 has a mesh of 10
It is knitted to about 50 mm, preferably 20 mm. In terms of strength, the upper surface net 4 is 50-1.
About 00 kgf / cm ² , preferably 60 kgf / cm 2
^{In 2} , those having no or little elasticity are preferred. On the other hand, the lower surface net 4, the intensity 70~130kgf / cm ^2, preferably about at 100 kgf / cm ^2, with less or no stretch or less which stretch is desirable.

As shown in FIG. 4, an edge rope 8 is provided at the periphery of each of the nets 4 and 5, and the edge rope 8 is folded back so as to be wound around the edge of each of the nets 4 and 5. The periphery of the nets 4 and 5 is covered with a frame-shaped cover 9 to surround the nets 4 and 5. A ring-shaped stopper 11 called an eyelet is fixed to the cover 9 by caulking.

Reference numeral 15 denotes a plurality of plates which are attached to the back surface of the scaffolding net 2 at intervals, and are formed longer than the width of the scaffolding net 2. Reference numeral 16 denotes the plate 15 and the scaffold net 2 fixed thereto, and the scaffold net 2
And a connection stopper for fixing the fall prevention nets 3 and 3 to each other. The connection bracket 16 includes a mounting bolt 16A,
Ring-shaped nut part 16B screwed into this mounting bolt 16A
The mounting bolt 16A is integrated with the plate 15 by appropriate means such as welding, and the nets 4 and 5 constituting the scaffolding net 2 are attached to the mounting bolt 16A.
The nut portion 16B is screwed through the stopper 11 of FIG. In this way, the plates 15 are arranged side by side on the back surface side of the scaffolding net 2, and the scaffolding net 2 is held in a stretched state in the width direction. Both ends of the plate 15 slightly protrude from the scaffold net 2, and a U-shaped bolt 18 as a connecting means for passing a rope, which will be described later, is fixed to the protruding upper surface side. This U
The mold bolt 18 is fixed to the plate 15 by a nut 17. In addition, 18A is a seat for a cord line passed through the U-shaped bolt 18.

The fall prevention nets 3 and 3 are substantially the same as the bottom net 5 in the size and strength of the stitches. The brim 8 and the cover 9 as described above are also provided around the fall prevention net 3.
A ring-shaped stopper 11 is provided at the same position as 5. In addition, suspension ropes 25 are integrally provided at predetermined intervals on the fall prevention nets 3, 3, and
Connecting brackets 26, 27 such as carabiner and shackle above and below 25
Is attached. And the fall prevention net 3,
3 and the lower connecting fitting 27 attached to the scaffold net 2
The scaffolding net 2 and the fall prevention nets 3 and 3 are connected to each other by being connected to the connection fastener 16 fixed to the base. The upper connecting metal fittings 26 attached to the fall prevention nets 3 and 3 are separated from each other by two ropes 31 and 31 made of a wire rope or the like stretched over a support portion 30 facing away from the upper working net 1.
To expand. Further, the support portion 30 has a net 1 for working at height.
In addition to the ropes 31, 31, the two ropes 32, 32 are stretched in parallel, and the ropes 31, 31 are passed through U-shaped bolts 18 fixed to both ends of the plate 15 for working at heights. The net 1 is prevented from rolling. Further, in this embodiment, a tread plate 38 is further fixed by a rubber band 39 on the walking band 6 integrated with the surface side of the scaffolding net 2.
Each of the nets 5 and 5 serving as the scaffold nets 2 and the fall prevention nets 3 and 3 serving as handrails, which constitute the net 1 for working at heights, are modularized with a total length of 6380 mm and a width of 1000 mm as standard. The walking belt 6 has a width of 50.
0 mm.

The operation of the embodiment constructed as described above will be described. The high-place work net 1 of the present embodiment can be widely used as a temporary suspension bridge or a scaffold at the time of high-place work such as wooden construction or building construction. However, a case in which a temporary suspension bridge or the like is constructed will be described as an example. First, the lower connection fitting 27 attached to the hanging rope 25 of the fall prevention nets 3 and 3 and the connection fitting 16 attached to the plate 15 of the scaffolding net 2.
And the ring portion 16B is connected to assemble the high work net 1. Then, a two-story rope 31 for extending the high-altitude work net 1 to a support portion 30 made of an iron pole or the like confronted through a valley or a river, and a two-story rope for suppressing the lateral movement of the high-altitude work net 1 Stretch the ropes 32,32. At this time, each of the ropes 31, 31, 3 is attached to a connecting bracket 26 previously attached to the upper end of the hanging rope 25 and U-bolts 18 fixed to both ends of the plate 15.
After the high-altitude work net 1 is folded together in a state where it passes through the lines 32 and 32, and the ropes 31, 31, 32 and 32 are stretched,
By pulling the high work net 1 from the opposite shore, the high work net 1 can be easily and quickly expanded. In this way, after the high-place work net 1 is extended, the tread plate is placed on the walking band 6 integrated with the surface side of the scaffold net 2.
Put the rubber band 39 on the tread plate 38
The tread plate 38 is fixed to 15 with a fastener such as a nail or a screw (not shown). After that, in order to position and hold the expanded net for aerial work 1, wires are connected to the ropes 31, 31 so as to abut against the insides of the connecting fittings 26 attached to the suspension ropes 25 of the fall prevention nets 3, 3. The clip 40 (shown in FIG. 2) is attached, whereby the work for erection of the high-altitude work net 1 is completed. In addition, since the high work net 1 is standardized to a predetermined size, when constructing a suspension bridge of a longer length, the high work net 1 is required.
Are connected in the lengthwise direction, and the fasteners 11 of the adjacent high work net 1 are vertically overlapped and fixed by bolt means (not shown). In this way, it is possible to freely walk on the erected scaffold net 2. At this time, the scaffolding net 2 is composed of a composite net in which two nets 4 and 5 are overlapped, and since the walking band 6 of the upper surface net 4 is integrated, the foot can be hooked on the net. Also, even if the foot is removed from the walking belt 6, the upper surface net 4 is densely knitted, and further, on the back surface side of the scaffolding net 2 at predetermined intervals in the width direction of the scaffolding net 2. Since the plate 15 is stretched, it is not difficult to walk. Furthermore, by making the scaffolding net 2 a triple structure of the two nets 4, 5 and the walking band 6, strength capable of withstanding a load can be obtained, and the scaffolding net 2 has very little deflection when walking. Also has excellent stability.
In addition, in this embodiment, since the tread plate 38 is further fixed on the walking band body 6 and the user walks on the tread plate 38, the foot does not sink during walking, so that it becomes easier to walk. Even if the tread plate 38 is omitted, a slight sinking occurs, but there is no problem with walking. In addition, since the fall prevention nets 3 and 3 serving as handrails are provided on both sides of the scaffold net 2 when walking, the fall from the scaffold net 2 can be reliably prevented and the scaffold net 2 By passing the ropes 32, 32 through the U-shaped bolts 18 fixed to both ends of the plate 15 attached to the back side, it is possible to suppress the lateral swing of the high-place work net 1, and to improve the safety during walking.

As described above, in the present embodiment, the suspension bridge is formed by the lightweight and foldable net for work at a high place 1 to facilitate transportation to the site. In addition, the net for work at height 1 serving as a suspension bridge has a ring-like shape of a connection fitting 27 attached to the suspension rope 25 of the nets 3 for preventing falling and a connection fitting 16 attached to the plate 15 of the net 2 for scaffolding. It is extremely easy to assemble simply by connecting the nut part 16B, and the net 1
In erection, the net 1 for working at height can be easily extended simply by passing the ropes 31, 31 through the connecting fittings 26 attached to the upper end of the suspension rope 25. For this reason, the work of erection or removal of the high-place work net 1 at the site is easy, and the construction period can be significantly reduced. Further, by forming the scaffolding net 2 in a triple structure of the two nets 4 and 5 and the walking band 6, the scaffolding net 2 has strength enough to withstand a load during walking and is narrow enough to allow the scaffolding net 2 to walk. Even if formed, the fall prevention nets 3, 3 serving as handrails are provided on both sides of the scaffold net 2, so that the fall prevention nets 3, 3 reliably prevent the fall from the scaffold net 2. Can be. On the back side of the scaffolding net 2, a plate 15 for holding the scaffolding net 2 in a stretched state is provided.
Are attached at predetermined intervals, so that the scaffolding net 2 has very little deflection during walking and is excellent in stability during walking. Moreover, by passing the ropes 32, 32 through the U-shaped bolts 18 fixed to both ends of the plate 15, it is possible to suppress the lateral swing of the high-altitude working net 1, and to improve walking safety.

FIGS. 6 to 8 show a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals.
A detailed description of overlapping parts will be omitted, and different parts will be described. In this embodiment, two scaffolding nets 2 and 2 are connected to the left and right in order to increase the width of the work mat 1. That is, as shown in FIG. 7, the connecting portions A of the adjacent left and right scaffold nets 2 are fixed to the stoppers 11 formed on the cover 9 by the bolts 45 and the nuts 46. On the other hand, the connecting portion B between the plate 15 and the scaffolding nets 2, 2 is substantially the same as the connecting structure between the scaffolding net 2 and the plate 15 in the first embodiment. That is, as shown in FIG.
A, the ring-shaped nut portion 46A is tightened on the upper surface side of the scaffolding nets 2, 2 to fasten the plate 15 and each scaffolding net 2, 2 together. In addition, the plate 15 may be provided corresponding to the length connecting the two scaffold nets 2, 2, or may be formed according to the length of each scaffold net 2, 2. In this case, a concave portion 47 and a convex portion 48 are formed at adjacent ends of the plates 15, 15, and the concave portion 47 and the convex portion 48 are fitted.
The bolts 45A penetrate the concave portions 47 and the convex portions 48, and the adjacent plates 15, 15 and the scaffold nets 2, 2,
And are integrally fixed. Thus, the working mat 1 having a width twice as large as that of the first embodiment is obtained. In this manner, the two scaffold nets 2, 2 are connected in this manner, and the outer edge of each scaffold net 2, 2 is connected to the outer edge of the scaffold net 2, 2 in the same manner as in the first embodiment.
The right and left fall prevention nets 3 and 3 functioning as handrails are connected to form a U-shaped high-place work net 1. In addition,
In this embodiment, the walking band 50 integrated with the surface of each of the scaffolding nets 2 and 2 has a vertical section 50A extending vertically along the longitudinal direction of the high work net 1 and a vertical section 50A.
Crossing section that crosses 50A and extends to the left and right scaffolding nets 2, 2.
50B.

In this embodiment configured as described above, by connecting the two scaffold nets 2 and 2, the width of the high work net 1 can be increased, and the traffic of people can be easily reached. Further, by arranging the walking strips 50 in a cross shape, it is easy to walk the scaffolding nets 2 and 2 in the width direction.

As described above, the embodiments of the present invention have been described in detail. However, the present invention is not limited to the above embodiments.
Various modifications can be made within the scope of the present invention.
For example, in the above embodiment, the suspension bridge is described as an example. However, the suspension bridge can be widely used as a scaffold for wooden construction, building construction, or construction of an elevated road or a construction floor of a bridge. Further, the connection structure between the support portion and the working net, the connection structure between the scaffolding net and the fall prevention net, and the plate fixing structure are not limited to the above-described embodiment. Furthermore, the material of the working net and the shape of the plate may be appropriately selected. Further, in the first embodiment, the tread plate fixed to the scaffold net can be omitted, and the walking belt of the first embodiment may be formed in a cross shape as in the second embodiment. .

[0018]

According to the first aspect of the present invention, there is provided an aerial work net for extending an aerial work net between a pair of spaced apart supporting portions, wherein a walkable scaffold net is provided. A pair of right and left fall prevention nets are connected to both sides of the to form a U-shaped work net as a whole,
The scaffolding nets is configured to <br/> net organized in a synthetic resin rope superposing a plurality, with the upper surface side of the net closely knitted from the lower surface side of the net, the
The entire surface of the scaffolding net is
A walking band is provided, and the scaffold is
A plurality of plates holding the net are placed in the width direction of the net.
And a predetermined number of
Attach the suspension ropes at intervals and secure the suspension ropes.
Fix the connecting brackets on the top and bottom of the
To the connection fasteners provided at both ends of the plate
In both cases, the scaffold net is suspended between the support portions.
A pair of right ropes and the plate
And a pair of right and left ropes
Through the connecting cable provided at
In addition to hanging a business net, both ends of the plate
Through the connecting rope provided, pass the lower
The structure is designed to extend the work station, so it is easy to transport to the site, the work for erection or removal of the net for high places at the site is easy, and the construction period can be significantly shortened, Even if the net is formed so narrow that it can be walked, the fall prevention net can reliably prevent the fall. In addition,
Work net can be stably expanded by the four ropes
As well as play with hanging rope of fall prevention net
Connecting brackets for passing the four ropes passed over the support
And connecting means, it is possible to
Pull along the scaffolding net while dragging along
Can easily build or remove the scaffolding net
As a result, the construction period can be significantly reduced. In addition, play
The scaffolding net is held stretched by
In addition, the walking band provided on the net, when walking,
To keep your feet stable, hook your feet on the scaffolding net.
Soon, you can walk stably.

[Brief description of the drawings]

FIG. 1 is a front view of a high work net showing a first embodiment of the present invention.

FIG. 2 is a side view of the high-place working net.

FIG. 3 is a perspective view of the scaffold net partially cut away.

FIG. 4 is a plan view of the high-place working net.

FIG. 5 is an enlarged cross-sectional view showing a connected state of the high-place work net.

FIG. 6 is a plan view of a net for working at heights showing a second embodiment of the present invention.

FIG. 7 is an enlarged sectional view showing a connection state of the same net.

FIG. 8 is an enlarged sectional view showing a connection state between the net and the plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Net for work at height 2 Net for scaffolding 3 Net for fall prevention 4 Upper net 5 Lower net 6 Walking band 15 Plate 16 Connection fastener 18 U-bolt (connection means) 25 Suspension rope 26,27 Connection metal 31,32 Rope

Claims (1)

(57) [Claims] An aerial work net for extending an aerial work net between a pair of spaced apart support portions, a walkable scaffold net is provided, and a pair of left and right fall prevention members is provided on both sides of the scaffold net. The nets are connected to form a U-shaped work net as a whole, and the scaffold net is a synthetic net.
It is composed of a plurality of nets knitted with resin ropes, and the net on the upper surface is knitted more densely than the net on the lower surface.
A walking band is provided over the entire length of the scaffolding net,
On the back side of the net, there are a plurality of platforms for holding the scaffold net.
While juxtaposing the rates across the width of the net,
Attach a hanging rope to the fall prevention net at a predetermined interval.
Integrally fixed, and a connecting metal above and below the hanging rope
Fixture, and attach the lower connecting bracket to both ends of the plate.
Connect to the provided connection fasteners, and
A pair of right and left ropes for hanging the scaffolding net, and the lower part
And a pair of right and left ropes supporting the plate
And the ropes located on the upper side of the rope
Through the connecting bracket provided on the side and located on the lower side
Pass the rope through the connecting means provided at both ends of the plate
It is constructed so that a working net at a height is extended between the support parts.
A net for work at height characterized by the fact that it has been achieved .