JP2000179158A - Protection panel and scattering prevention method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the scattering of the spray of paint and simplify a working process by surrounding a power transmission tower by a protection panel stretching a net body on the frame body of an air tube and performing lifting and lowering in accordance with the progress of painting work. SOLUTION: A frame body 5 is formed by two lateral tubes 5a, one middle lateral tube 5b and four vertical tubes 5c filling the flexible and airtight tubes with air, and a net body 6 is stretched in the frame to form a basic panel 2. In addition, a space is formed in the center of the lateral tube and the lateral middle tube to be divided into right and left so as to be disposed, and reinforced by the four vertical tubes to form a panel 3 except the inside. The panel except the inside is arranged on a face arranging the ladder of a power transmission tower, and the basic panel 2 is arranged on the other face to connect a corner part to be fixed at a working part so as to form a protection cover 1. The protection cover 1 is hung up to be lifted and lowered by a rope hung down from the arm of the power transmission tower in accordance with the progress of work. After working completion, air is let out of each tube 5a, 5b, 5c to be dismantled and transported so as to take costudy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection panel and a method for preventing splattering, and more particularly to a technique for preventing an object such as a paint splatter from splashing around in a construction of a building.

[0002]

2. Description of the Related Art Power transmission towers and piers are periodically subjected to maintenance such as painting. At that time, in order to prevent the paint pieces to be peeled and the paint splashes from scattering around, the steel tower is surrounded by a protective net and the painting is being advanced. Conventionally, in order to stretch this kind of protective net, a method of connecting the protective net to a log framed along a steel tower using an appropriate metal fitting or string has been adopted. Since it is not preferable to add logs during the construction, it is common practice to enclose the entire tower with a log and a protective net in advance.

[0003]

In the above conventional method,
The number of logs becomes enormous, the weight becomes considerably heavy, and skill is required to assemble the logs. Therefore, it took a lot of man-hours to transport the logs and the frame, which was one of the factors that hindered the reduction of construction costs. Further, since the end of the protective net is tied to the log, it takes time to install the protective net, but there is a problem that it is not easy to remove the protective net in a strong wind.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to prevent, for example, paint such as paint splashes from splashing around in a painting work of a power transmission tower. An object of the present invention is to simplify the work and to provide a protection panel used in a shatterproof construction method.

[0005]

For this purpose, the following protective panel and scattering prevention method were created. That is,
The protection panel according to the first invention is characterized in that a surface forming member is attached to a frame of a frame formed by an air tube formed by filling a tubular portion with air.

[0006] The above-mentioned protective panel is stable because the surface forming member is stably supported with an appropriate tension by increasing the internal pressure of the air tube to increase the rigidity of the tubular portion and the frame, and is lightweight. It is easy to install, and it is relatively easy to connect a plurality of protective panels. Then, when an object such as a paint splash jumps out of the work site, the splash is prevented by hitting the surface forming member. Examples of the surface forming member include a cloth, a thin plate, a net, and a sheet. The material is appropriately selected from natural fibers, wood, woody materials, synthetic resins, light metals and the like. Breathability can also be imparted. The tubular portion is formed of a soft and airtight material obtained by applying a rubber film to a canvas or a synthetic fiber base fabric, for example. In addition,
By removing the air from the air tube and reducing the size, it can be easily moved and transported.

[0007] A protective panel according to a second invention is characterized in that the surface forming member is a net.

[0008] Since the net is breathable, the protective panel is less likely to flutter even when exposed to wind and is useful for ventilation. The size of the mesh is appropriately set.

A third invention is a construction method for preventing an object from being scattered around in the construction of a building, wherein the inside of the frame is framed by an air tube formed by filling a tubular portion with air. Attach the surface forming member to form a protective panel,
The protection panel constitutes a protection body that encloses the periphery of the building, and the protection body is raised and lowered according to the progress of the construction and supported at a predetermined position.

In this scattering prevention method, the above-mentioned protection panel is used, the surface forming member is supported by an appropriate tension by the rigidity of the air tube, and it is light in weight, so that it can easily embrace the periphery of the tower-like building. A protective body can be configured. Therefore, the installation of the protective body is simplified, and the operation of moving the protective body to a predetermined height position can be easily performed. And even if an object such as paint splashes jumps out of the work site, it hits the surface forming member, so that scattering to the periphery is prevented. In addition, by moving the air tube out of the air tube and reducing the air tube, the air tube can be easily moved and transported.

According to a fourth aspect of the present invention, in the above-described shatterproof construction method, a plurality of protective panels constituting the protective body are connected to each other by a scalable cover member.

In this case, by expanding or contracting the cover member, the peripheral length of the protective body, that is, the sectional shape can be easily changed. Therefore, it is suitable for completely covering the periphery of a tower-like building such as a power transmission tower whose sectional shape changes depending on the height. The same material as the surface forming member can be used for the cover member. In the case where the protective body has a substantially rectangular tube shape, the cover member is arranged at the corner of the rectangular tube, and the corner is supported from the tower-like building side so that the protective panel itself is not bent. This is preferable for simplifying the configuration.

According to a fifth aspect of the present invention, in the above-mentioned scattering prevention method, the surface forming member and the cover member are nets.

Since the net has air permeability, the protection panel does not easily flutter even when wind is received, and is useful for ventilation. The mesh size should be selected according to the construction.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described with reference to FIG. FIG. 1 is a diagram showing a power transmission tower during execution of a scattering prevention method according to an embodiment, FIG. 2 is a cross-sectional view of the power transmission tower, FIGS. 3 and 4 are enlarged front views of a protection panel, and FIG. It is a perspective view which expands and shows the principal part of a panel. As shown in FIG. 1, the protective cover 1 is installed so as to fit on the body of the power transmission tower T. As shown in FIG. 2, the protective cover 1 has a schematic configuration in which three basic panels 2 and one hollow panel 3 are connected by a corner net 4 to form a substantially rectangular tube. The protective cover 1 is a protective body according to the present invention, the basic panel 2 and the hollow panel 3 are protective panels according to the present invention, and the corner net 4 is a cover member according to the present invention. Equivalent to. Hereinafter, description will be made in order.

As shown in FIGS. 3 and 5, the basic panel 2 has a frame formed by framing two horizontal tubes 5a, 5a, one middle horizontal tube 5b, and four vertical tubes 5c. A surface forming member, specifically, a net body 6 is stuck in the frame of the body 5 without loosening. For example, these tubes 5a to 5c are formed by forming a tubular portion from a soft and airtight material obtained by applying a rubber film to a canvas or a synthetic fiber base fabric, and filling the tubular portion with air to expand. This is a so-called air tube, which is provided with required rigidity by increasing the internal pressure. The net body 6 has a relatively fine mesh that can catch paint splashes and fog.

Next, a joining portion for framing the tubes 5a to 5c will be described. As shown in FIGS. 6 and 7, joining pieces 5e are attached to both ends of the vertical tube 5c, and FIGS. 9 and 10 are attached to the horizontal tubes 5a and 5b.
As shown in (5), a joining piece 5f is attached to a position where the ends of the vertical tubes 5c are joined. Both joining pieces 5e,
5f, as shown in FIG. 5, is arranged so as to be exactly aligned when framing each of the tubes 5a to 5c. Has become. As described above, since the frame body 5 can be disassembled and assembled and has a lightweight structure, the air tube can be evacuated and stored compactly, which is convenient for carrying into a construction site such as a mountainous area.

Each of the tubes 5a to 5c is provided with locking bands 5j, 5k and 5m extending in the longitudinal direction of the tube, as shown in FIGS. And the net body 6 is disposed at a position deviated to one side of the frame body 5, and the peripheral edge of the net body 6 and the locking bands 5 j,
A 5k grommet (haul eyelet) 5h is detachably connected by a spring hook 6a. The net body 6 is dimensioned so that it does not slack when attached, so that it does not flutter even if it is blown by the wind. In addition, the middle horizontal tube 5b
Joint pieces 5f are attached to both upper and lower sides (symmetrical positions) of the tube main body, and locking bands 5k are attached to both left and right sides (symmetrical positions). The other structure is the same as that of the horizontal tube 5a.

Further, a corner rope 4a is connected to a corner net 4 by a grommet 5h of a locking band 5m of a vertical tube 5c.
And tied together with the edge of. However, the corner ropes 4a arranged at the upper and lower ends of the corner net 4 are attached to the mounting rings 5p provided at the ends of the upper and lower horizontal tubes 5a.
It is tied to. In addition, these corner ropes 4a
Are sewn under the mesh of the corner net 4 to prevent the central portion of the corner net 4 from swelling due to wind. The horizontal tube 5a is provided with a plurality of mounting rings 5p. A rope is hung on the mounting ring 5p so that the frame 5 (that is, the protection panel) can be pulled upward or an additional net can be mounted. Has become.

Next, the hollow panel 3 will be described.
The hollow panel 3 has a structure similar to that of the basic panel 2. However, as shown in FIGS. 2 and 4, a horizontal tube 5d and a middle horizontal tube 5d 'are arranged separately on the left and right so as to create a space in the center. And four vertical tubes 5c 'for reinforcement
Is added in the difference. That is, by connecting the horizontal tubes with the connection belt 3a disposed on the outer surface of the panel, the worker climbing the ladder of the tower can pass through the space S without being hindered by the horizontal tubes. In this example, each horizontal tube 5
The diameter of a, 5b, 5d and 5d 'was 360 mm, the diameter of the vertical tubes 5c and 5c' was 180 mm, and the length of each tube was about 5 m.

Then, the three basic panels 2 and one hollow panel 3 are connected to a corner net 4 and a corner rope 4a.
To form a protective cover 1 having a substantially rectangular cylindrical shape. In this case, the corner portion of the rectangular cylindrical shape is supported in advance by a Kepler rope 7 (see FIG. 1) for corner support, which is disposed so as to extend vertically along the tower post Tp.
One end of the corner net 4 and one end of the corner rope 4a are tied to the Kepler rope 7. As shown in FIG. 11, the Kepler rope 7 is supported by a plurality of rope supports 7a attached to the tower post Tp. In FIG. 2, reference numeral 8 denotes a tube spacer, 8a denotes a tying string, and each of the horizontal tubes 5a, 5b, 5d and 5d 'and the tower T
And is mounted between the horizontal members Tb so that each horizontal tube does not adhere to the steel tower T. An enlarged view of the tube spacer 8 is shown in FIG.

Now, in the painting work of the power transmission tower T,
A method of using a protective panel to prevent paint and the like from scattering will be described. First, referring to FIG. 1, one end of the Keplera rope 7 is fixed to the C3 arm of the power transmission tower T, and the other end is fixed to the foundation with anchor bolts, and the Keplera rope 7 is fixed to the tower post Tp.
It is arranged almost in parallel. The middle portion of the Keplerian rope 7 is supported by a rope support 7a attached to an appropriate position of the tower post Tp. On the other hand, all the tubes 5a-5
Air is injected into d, 5c 'and 5d' using a pump or an electric blower to expand the tube. When each tube is framed, the joining pieces 5e and 5f are
The basic panel 2 and the hollow panel 3 are assembled by stretching the net body 6 in the frame, and the corner net 4 and the corner rope 4a are attached to both left and right sides of the frame (see FIG. 5).

The hollow panel 3 is disposed on the surface of the power transmission tower T on which the ladder is installed, and the basic panel 2 is disposed on the other surface. The adjacent corner nets 4 and the adjacent corner ropes 4a are disposed. , The protective cover 1 surrounding the body of the power transmission tower T is temporarily assembled. next,
A hanging rope 9 is hung from the C3 arm, and the lower end of the rope 9 is connected to the ring 5p of the horizontal tubes 5a and 5d located at the uppermost position. Thus, the protective cover 1 can be lifted to a position corresponding to the progress of the construction by a suitable lifting means such as an electric winch.

When the height position for installing the protective cover 1 is determined, the corner net 4 and the corner rope 4a are determined at that position.
To the Kepler rope 7. At this time, the corner net 4 is expanded to cover the periphery of the body of the power transmission tower T without gaps. When the protective cover 1 is fixed, a position where the height of the horizontal tube 5a and the horizontal member Tb of the power transmission tower T match is selected, and a tube spacer 8 is provided between the horizontal tubes 5a and 5d and the horizontal member Tb. And the horizontal tubes 5a and 5d are tied to the horizontal member Tb with a string 8a.

Since the protective cover 1 merely surrounds the body of the power transmission tower T, a bottom surface is usually formed on the protective cover 1 with a bottom net. At this time, the periphery of the bottom net is connected to the lowermost horizontal tubes 5a, 5d.
And the ends of the corner net 4 with a string. In this way, the protective cover 1 to which the bottom net is attached can prevent a tool or the like from accidentally falling right below. The protective cover 1 and the bottom net may be formed integrally.

When the preparation is completed, the work of painting the power transmission tower T in the area surrounded by the protective cover 1 is started. Even if the paint pieces to be peeled off or the splashes of the brush-coating paint fly, they hit one of the nets (net 6, corner net 4, etc.), so they do not scatter around. In addition, the net is breathable, so it does not flutter even when exposed to the wind and is useful for ventilation.

When the work in the area is completed, the protective cover 1
The rope 4a and the string 8a fixed to the power transmission tower T are unwound, and the protective cover 1 is raised and lowered to the next height position by the lifting means. At the end of the work or at the time of strong wind, the protective cover 1 is lowered. As described above, according to this scattering prevention method, the protective cover 1 can be relatively easily installed without using a log frame as in the conventional method, and can be easily moved in accordance with the progress of the work. Can be. Therefore,
It is possible to simplify and speed up the process of the setup work for preventing the paint splash and the like from scattering around.
The frame 5 of the protective cover 1 has a structure in which an air tube is framed, and is softer than wood or metal, so that it is highly safe even if it hits. It should be noted that the air in the air tube of the frame 5 is evacuated to a reduced state, so that transport and storage can be easily performed.

Next, another example of the protection panel will be described. FIG.
3 is a front view of the wide panel. The wide panel 11 shown in FIG. 1 has an extended panel 12 connected to the left and right sides of the basic panel 2 described above. In this case, the horizontal tube 5d
A net 16 is attached to the inside of a frame body connecting the vertical tube 5c and the vertical tube 5c. The connection structure of each tube, the manner in which the net 16 and the corner net 4 are stretched, and the like are the same as those of the basic panel 2. Using this wide panel 11, a larger protective cover can be easily configured.

Next, another example of the embodiment will be described. FIG.
As shown in the figure, the beam 21 is fixed to the power transmission tower T so as to protrude laterally, and the wire 2 hanging from the tip of
In step 2, the protective cover 23 is suspended. The protective cover 23 is formed in a rectangular tube shape capable of surrounding four circumferences at the base end of the power transmission tower T, and a net 25 is attached to a frame 24 having an air tube structure forming a framework of the protective cover 23. This is the configuration. Reference numeral 26 in the figure denotes a rope for connecting the lower end of the protective cover 23 to the power transmission tower T and fixing the rope. If necessary, ropes and protective devices for binding each part of the protective cover 23 to the power transmission tower T are provided. A bottom net forming the bottom of the cover 23 is added. In this scattering prevention method, the protective cover 23 (protective body) is raised and lowered by an appropriate lifting means in accordance with the progress of the construction, and is supported at a predetermined position, and only the construction area is efficiently covered with the protective cover 23. This is to prevent objects such as paint from scattering or falling.

The scattering prevention method of the present invention can be applied in addition to the above-described painting work, for example, to prevent scattering of dust.

[0031]

As described above in detail, according to the present invention, the surroundings of a building are surrounded by a relatively lightweight protective body, and the protective body is raised and lowered in accordance with the progress of the construction. It is possible to simplify a working process for preventing scattering of the like. In addition, the protection panel and the protection body have a structure in which a surface forming member such as a net is stretched on the frame of the air tube. The net is stably supported with an appropriate tension and is unlikely to flutter. Suitable for preventing. In addition, the air tube can be easily moved and transported by evacuating the air tube and reducing the air tube. Therefore, it is possible to improve the efficiency of the painting work of a tower-like building such as a power transmission tower or a bridge pier.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a protection panel and a scattering prevention method according to a first embodiment.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, showing an end face of a protective body mounted on a power transmission tower.

FIG. 3 is a front view of a basic panel.

FIG. 4 is a front view of a hollow panel.

FIG. 5 is a perspective view for explaining main parts of a basic panel and a hollow panel.

FIG. 6 is an enlarged front view showing an end of a vertical tube.

FIG. 7 is a view showing an end face of a vertical tube.

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is an enlarged front view showing a main part of an upper horizontal tube and a lower horizontal tube.

FIG. 10 is a view showing end faces of an upper horizontal tube and a lower horizontal tube.

FIG. 11 is a view showing a rope support.

FIG. 12 is a view showing a tube spacer.

FIG. 13 is a front view of the enlarged panel.

FIG. 14 is a diagram illustrating another example of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protective cover (protective body) 2 Basic panel (protective panel) 3 Hollow panel (protective panel) 4 Corner net (cover member) 5 Frame 5 5a Horizontal tube 5b Medium horizontal tube 5c Vertical tube 6 Net body (surface forming member) ) 9 rope

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yoshimi Hino 3030 Jusuka, Tsuzuka-cho, Kasugai-shi, Aichi Prefecture Power Development Co., Ltd. (72) Inventor Masayuki Ezawa 3030 Jusuka Tsukazuka-cho, Kasugai City, Aichi Prefecture Power Supply Development Co., Ltd. Inside the Nagoya Transmission Works (72) Inventor Shinji Tsuboi 3030 Jusuka Tsukazuka-cho, Kasugai-shi, Aichi Development Electricity Co., Ltd. (72) Inventor Ando This Kasugai City, Aichi Prefecture Shitashijo-cho 4-chome address 4 of 6 Sakurai Giken Kogyo Co., Ltd. in

Claims (5)

[Claims] 1. A protective panel in which a surface forming member is attached to a frame of a frame framed by an air tube in which a tubular portion is filled with air. 2. The method according to claim 1, wherein the surface forming member is a net.
Protective panel as described in. 3. A construction method for preventing an object from scattering around in a construction work of a building, wherein a surface forming member is provided in a frame of a frame body framed by an air tube formed by filling a tubular portion with air. By sticking to form a protective panel, and forming a protective body that surrounds the building with this protective panel,
A scattering prevention method in which the protective body is raised and lowered according to the progress of construction and supported at a predetermined position. 4. The shatterproof construction method according to claim 3, wherein the plurality of protective panels constituting the protective body are connected to each other by a scalable cover member. 5. The scattering prevention method according to claim 4, wherein the surface forming member and the cover member are nets.