JP7590804B2 - Freestanding dustproof net - Google Patents

Description

An embodiment of the present invention relates to a free-standing dust protection net that is easy to install and remove at a work site.

The devices and equipment used in substations and the like may be installed outdoors because they handle high voltages or large volumes. Some of these devices and equipment that require outdoor installation, such as gas-insulated switchgear (GIS), require the prevention of dust and other particles from entering during outdoor installation work. As a measure to prevent the introduction of dust and other particles during outdoor installation work, a dustproof house such as that described in Patent Document 1 is known.

To set up such a dustproof house, it is necessary to assemble single-pipe tubes, install support members about 4m high, and pass the dustproof net through the single-pipe tubes. It has been pointed out that due to the height of the pipes, installing the support members and passing the dustproof net through the single-pipe tubes requires high-altitude work using ladders or similar, and this takes a lot of time.

After the installation work is completed, the dustproof house used in the work must be removed, which requires working at height and a lot of time. In the dustproof house of Patent Document 1, although the frame can be folded to make it easy to move, the frame is several meters square and 4 meters high, so heavy machinery such as a crane must be used for installation and movement, and installation, movement, and removal require a considerable amount of labor.

Because outdoor work is dependent on the weather, there is a strong demand to quickly start installation work on outdoor devices and equipment that require measures against dust and other elements, and to quickly remove them.

JP 2003-90312 A

The objective of this embodiment of the present invention is to provide a free-standing dustproof net that can be used to quickly install equipment that requires dust control outdoors.

An embodiment of the present invention comprises a one-sided net that can be rolled up into a roll, a net storage section to which one end of the net is fixed and which can be rolled up and stored by a biasing force, a net storage and expansion mechanism that is fixed at its lower end to the net storage section and can be fixed at its upper end to the net, and can be manually or electrically expanded and contracted up and down, and a support leg provided at the lower part of the net storage section.

According to the embodiment, a dustproof net is realized that allows quick installation work for equipment that requires dust control outdoors.

1 is a schematic perspective view illustrating a dustproof net according to an embodiment; 1 is a schematic cross-sectional view illustrating a dustproof net according to an embodiment. FIG. FIG. 11 is a schematic front view for explaining the operation of the dustproof net according to the embodiment. FIG. 11 is a schematic perspective view for explaining the operation of the dustproof net according to the embodiment. 5(a) and 5(b) are schematic diagrams for explaining the installation work of the dustproof net of the reference example.

Each embodiment will be described below with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the size ratio between parts, etc. are not necessarily the same as in reality. Even when the same part is shown, the dimensions and ratios of each part may be different depending on the drawing.
In this specification and each drawing, elements similar to those described above with reference to the previous drawings are given the same reference numerals and detailed descriptions thereof will be omitted as appropriate.

FIG. 1 is a schematic perspective view illustrating a dustproof net according to an embodiment.
FIG. 2 is a schematic cross-sectional view illustrating the dustproof net according to the embodiment.
As shown in FIGS. 1 and 2 , a dustproof net 10 according to the embodiment includes a net 11 , a net storage section 12 , a net storage and extension mechanism 13 , and support legs 15 .

The net 11 is a single-sided net, and is provided with mesh or the like that can prevent the intrusion of dust and other particles required for installation work of devices and equipment (hereinafter referred to as devices, etc.). The net 11 is formed, for example, of flexible synthetic fiber twisted threads, and can be rolled up into a roll, and the rolled up net 11 can be easily expanded. The height of the expanded net 11 is, for example, about 4 m. The width of the net 11 can be any width, but can be, for example, about 4 m, because the net 11 can be rolled up and stored, and can be moved by a person using the handle 16 and roller 17 described later. By increasing the number of units installed in parallel, the width can be made about 1.5 m to 2 m, in which case it can be made even more compact.

A hook 19 is provided at one end of the net 11. The hook 19 is provided at a position approximately halfway across the width of the end of the net 11 that is pulled out. The hook 19 is used by hooking it onto one end of the net storage and expansion mechanism 13 that moves up and down. By fixing the hook 19 to the net storage and expansion mechanism 13, the net 11 is stored in the net storage section 12 and expanded from the net storage section 12 in accordance with the operation of the net storage and expansion mechanism 13.

The net storage section 12 has a space for storing the rolled up net 11 inside. The net storage section 12 has a rectangular prism shape, for example, as in this example. In order to store the rolled up net 11, the net storage section 12 has a width slightly longer than the width of the net 11 in a front view. In a side view, the net storage section 12 has a square or rectangular shape with a side longer than the diameter of the rolled up net 11 when the net 11 is rolled up. The shape of the net storage section 12 is not limited to a rectangular parallelepiped shape, and may of course be a polygonal prism, cylinder, elliptical cylinder, etc., in a side view, as long as it can store the rolled up net 11 and can store the motor 18, drive mechanism, etc.

The net storage section 12 has a winding shaft inside for fixing the other end of the net 11 and rolling and winding the net 11. The winding shaft is biased in the direction of winding the net 11. Therefore, when the force pulling on one end of the net 11 is removed, the net 11 is wound around the winding shaft and stored in the net storage section 12.

The net storage section 12 has a slit for pulling out the net 11 from one end. The end of the net 11 that is not fixed to the winding shaft is pulled out from the slit. When the net 11 is wound up in the net storage section 12, a hook 19 can be hooked onto the slit to secure it in place.

The net storage and expansion mechanism 13 is fixed to the top of the net storage section 12 at the other end. In this example, the net storage and expansion mechanism 13 is a pantograph mechanism that is diamond-shaped when viewed from the front. By making the net storage and expansion mechanism 13 a pantograph mechanism, it can be contracted into a small size and can be easily expanded whether electrically or manually.

The net storage and extension mechanism 13 is mechanically connected to a drive mechanism including a motor 18, and contracts and advances with the rotation of the motor 18. As described above, the net storage and extension mechanism 13 may be contracted and advanced manually instead of being electrically driven by the motor 18.

The support legs 15 are provided at the bottom of the net storage section 12. In this example, the support legs 15 are provided at two locations in the width direction of the net storage section 12 when viewed from the front. The support legs 15 are plate-shaped or rod-shaped members having a longitudinal direction that intersects with the width direction of the net storage section 12. The support legs 15 are provided to stably install the dustproof net 10 at the work site. By arranging the plate-shaped or rod-shaped members so that they have a longitudinal direction that intersects with the width direction of the net storage section 12, the dustproof net 10 can be installed stably and independently even when the net 11 is advanced. The support legs 15 are not limited to two locations in this example, but may be three or more locations, and may be one location as long as they intersect with the surface of the net 11 or support in the intersecting direction.

The dustproof net 10 according to the embodiment further includes a handle 16 and rollers 17. The handle 16 is provided near one end of the net storage section 12 in the longitudinal direction when viewed from the front. The rollers 17 are provided near the other end of the net storage section 12 opposite the one end in the longitudinal direction. The rollers 17 are provided at the bottom of the net storage section 12. When the net 11 is stored in the net storage section 12, the dustproof net 10 can be easily moved by rotating the rollers 17 when moving the net 11 by holding the handle 16. The rollers 17 can be, for example, caster-type rollers that can freely follow the direction of movement.

The operation of the dustproof net 10 according to the embodiment will be described.
FIG. 3 is a schematic front view for explaining the operation of the dustproof net according to the embodiment.
FIG. 4 is a schematic perspective view for explaining the operation of the dustproof net according to the embodiment.
Fig. 3 is a diagram for explaining the operation of the net storage and extension mechanism 13. Fig. 3 shows a schematic front view of the net storage and extension mechanism 13 in a stored state.
3, the net storage and extension mechanism 13 operates in an expandable and contractible manner. The lower portion of the net storage and extension mechanism 13 is fixed to the net storage section 12, and the upper end portion opposite to the fixed end can be freely moved up and down.

Figure 3 shows the state when the net 11 is stored, with the net storage and expansion mechanism 13 in its most contracted state. The net storage and expansion mechanism 13 is mechanically connected to a drive mechanism including a motor 18 provided within the net storage section 12, and is contracted and expanded by driving the motor 18. The net storage and expansion mechanism 13 has a hook hook portion 13a near the upper end. A hook 19 provided at the upper end of the net 11 can be hooked onto the hook hook portion 13a to secure the net 11.

The operation of the net 11 during its progression will now be described.
An operator of the dustproof net 10 (hereinafter simply referred to as the operator) manually pulls up the hook 19 of the net 11 stored in the net storage section 12, and hooks the hook 19 onto the hook hook section 13a of the net storage and extension mechanism 13 to secure it.

When the operator turns on the motor 18, the net storage and extension mechanism 13 starts to advance. As the net storage and extension mechanism 13 advances, the net 11 is pulled out of the net storage section 12 via the hook 19 and advanced.

When the net storage and extension mechanism 13 reaches its maximum extension length, the locking mechanism operates to maintain the net storage and extension mechanism 13 in that state. The net 11, which has been pulled out of the net storage section 12 and extended, is maintained in that state. The operator turns off the switch.

In this way, the dustproof net 10 can begin to be used.

Next, the operation when storing the net 11 will be described.
When an operator turns on a switch that starts the storing operation of the motor 18 and the drive mechanism, the storing operation of the net storing and extending mechanism 13 is started. As the net storing and extending mechanism 13 contracts, the net 11 is pulled into the net storing section 12 and stored therein.

When the net storage and expansion mechanism 13 reaches its most contracted position, the motor 18 stops. The operator removes the hook 19 from the hook catch 13a, and the net 11 is stored in the net storage section 12 by the biasing force of the winding shaft.

Next, the storage function of the support legs 15 will be described.
As shown in Fig. 4, when the dustproof net 10 is in use, the support legs 15 are fixed in a direction having a longitudinal direction perpendicular or intersecting the longitudinal direction of the net housing portion 12. When the net 11 is expanded, the surface of the net 11 includes the longitudinal direction of the net housing portion 12, and the above-mentioned set direction of the support legs 15 allows the dustproof net 10 to be stably installed even when the net 11 is expanded. On the other hand, when the dustproof net 10 is taken down or transported, the orientation of the support legs 15 can be changed so that the orientation of the support legs 15 is changed so that the support legs 15 are rotated about a rotating support portion provided at the bottom of the net housing portion 12 so as to be substantially parallel to the longitudinal direction of the net housing portion 12.

Once the support legs 15 have been retracted, the operator can hold the handle 16 and transport the dustproof net 10 using the rollers 17.

A method of using the dustproof net 10 according to the embodiment will be described in comparison with a method of using the dustproof net of the reference example.
5(a) and 5(b) are schematic diagrams for explaining the installation work of the dustproof net of the reference example.
As shown in Figures 5(a) and 5(b), the dustproof net of the reference example is installed by slidably mounting a net 111 on the top of a frame made up of a combination of single-tube pipes 112, 113. More specifically, single-tube pipes 112 are erected in four places surrounding the installation location of the device, etc., and a single-tube pipe 113 is placed like a beam between the upper ends of the single-tube pipes 112 between adjacent single-tube pipes 112 to form a frame. A number of rings at the upper end of the net 111 are passed through the single-tube pipes 113 that are placed horizontally. In this way, the installation location of the device, etc. is surrounded by the net 111 to prevent dust and the like from entering the device.

As mentioned above, the installation of the single pipes 112, 113 and the net 111 is about 4 m long, so workers must use scaffolding such as stepladders 122, 124 to install the dustproof net. Therefore, when installing the dustproof net, high-altitude work such as setting up a frame is required, which requires labor. When removing the dustproof net, similar high-altitude work and frame dismantling work must be performed.

In the dustproof net 10 according to the embodiment, the required number of dustproof nets 10 are placed between the erected positions of the single pipes 112 shown in FIG. 5(a) and the like. The required number of dustproof nets 10 is determined according to the installation location of the device, etc. For example, if the dustproof net 10 has a longitudinal width of 2 m, a work area of 6 m x 6 m can be secured by placing three dustproof nets per side. When installing the dustproof net 10, the orientation of the support legs 15 is set so that the dustproof net 10 does not fall over when the net 11 is advanced. If necessary, the support legs 15 are fixed to the installation surface by anchors, etc.

When the dustproof net 10 is placed at the installation location of the device, etc., the operator extends and fixes the net 11.

This allows the dustproof net 10 to be used.

When removing the dustproof net 10, the operator stores the net 11 in the net storage section 12 and stows the support legs 15.

This makes it possible to remove and transport the dustproof net 10.

The effects of the dustproof net 10 according to the embodiment will be described.
The dustproof net 10 according to the embodiment includes a net 11 that can be rolled up and stored and easily expanded, a net storage section 12 that stores the rolled up net 11, and a net storage and expansion mechanism 13 that hooks and fixes one end of the net 11 and allows it to be freely expanded up and down. Also, the net 11 is provided with support legs 15 that enable stable installation when it is expanded. Therefore, when not in use, the net 11 is stored in the net storage section 12, when in use, the net 11 is expanded upward, and when taken down, the net 11 is stored in the net storage section 12, so that no work at height is required when installing or taking down the dustproof net 10.

The net storage and extension mechanism 13 can be expanded and contracted manually or automatically by the drive of the motor 18. This reduces the amount of work required to set up and take down the dustproof net 10.

The multiple dustproof nets 10 are arranged to surround the installation location of the device, etc. For example, as shown in Figures 5(a) and 5(b), when the device, etc. to be installed is brought into the installation location, the net 11 of the dustproof net 10 on the side where the device, etc. is brought in can be temporarily stored in the net storage section 12, and the net 11 can be extended again after the device, etc. is brought in. This makes it possible to reduce the labor hours not only when setting up and removing the dustproof net 10, but also when bringing in the device, etc.

The support legs 15 are plate- or rod-shaped members that are rotatably attached to the bottom of the net storage section 12. Therefore, when the dustproof net 10 is in use, it can be set in a direction that will prevent the dustproof net 10 from falling over. When transporting the dustproof net 10 for removal or preparation for installation, the support legs 15 can be rotated to prevent them from getting in the way of transportation.

The dustproof net 10 according to the embodiment further includes a handle 16 and rollers 17. The handle 16 is provided on one side in the longitudinal direction of the housing of the net housing section 12, and the rollers 17 are provided on the other side in the width direction of the net housing section 12. Therefore, when taking down the dustproof net 10 or preparing to install it, an operator can hold the handle 16 and easily move the dustproof net 10 using the rollers 17.

In this way, a dustproof net can be realized that allows for quick installation of equipment that requires dust control outdoors.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

10 Dustproof net, 11 Net, 12 Net storage section, 13 Net storage extension mechanism, 15 Support legs, 16 Handle, 17 Roller, 18 Motor, 19 Hook

Claims (4)

A single-sided net that can be rolled up into a roll,
A net storage section that fixes one end of the net and can roll and store the net by a biasing force;
A net storage and expansion mechanism that is manually or electrically operated and can be fixed to the net storage section at its lower end and to the net at its upper end;
A support leg provided at a lower portion of the net housing portion;
A free-standing dustproof net with a The free-standing dustproof net of claim 1, wherein the net storage and expansion mechanism is electrically driven by a motor to move up and down. The freestanding dustproof net according to claim 1 or 2, wherein the support legs are members having a longitudinal direction, and the longitudinal direction is set to a direction intersecting the surface of the net when in use, and the longitudinal direction is set to a direction parallel to the surface of the net when not in use. The net storage unit further includes a carrying means provided in the net storage unit.
4. The self-supporting dustproof net according to claim 3, wherein the transporting means includes a handle that is held by an operator when not in use, and rollers that are grounded to facilitate movement.

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