JP5939517B2 - Windproof net device - Google Patents

Description

The present invention relates to a windproof net device that prevents strong wind from hitting agricultural products, facilities, and the like in facility horticulture.

According to Patent Literature 1, when a strong wind exceeding the cooperative control range of the wind speed value and the net descending occurs, the wire connector that suspends the net by the strong wind or the net connector that supports the horizontal wire of the net. It is possible to break down at least one of them, reduce the wind load and lower the net, and protect the struts and the net.

JP 2004-100350 A

However, as in Patent Document 1, although it is for protecting the support and the net, it supports the wire connector that suspends the net or the horizontal wire of the net so that the wind can be lowered by reducing the wind load. It is not preferable to destroy at least one of the network connecting devices because part of the equipment must be destroyed.
The technical problem of the present invention is to pay attention to such a problem, and when a strong wind arrives, the net device is rotated by the strong wind so that the equipment and crops are not destroyed, and the strong wind is caused to warp. .

According to a first aspect of the present invention, at least on both the left and right sides of an annular frame with a net inserted therein, a position lower than a half of the height of the frame is supported by a support on a horizontal axis , and the lower end of the frame is 1 This windproof net device has a structure that is always pulled downward by the above tension spring. As long as it is an annular frame, it may be a quadrangle or other than a quadrangle.

According to a second aspect of the present invention, in the windproof net device according to the first aspect , a through space is interposed below the frame, and the tension spring is provided in the space .

According to a third aspect of the present invention, a net having a fixed structure is stretched below the through space, and the through space is also closed with a net, and the net is loosely stretched so as not to obstruct the tension spring. A windproof net device according to claim 1 or claim 2.

According to a fourth aspect of the present invention, at least on both the left and right sides of an annular frame with a net in it, a position lower than a half height of the frame is rotatably supported by a support on a horizontal axis, and the frame by pulling the lower end always downwards by one or more tension springs, the rotation of the pulling the frame against the force of the spring variable and depending on the wind comes, and characterized by deflecting the wind direction different This is a windproof method using a windproof net .

As in claim 1, it is not stable just by supporting at least the left and right sides of an annular frame with a net in it on a column with a horizontal axis, but the lower end of the frame is always pulled downward by one or more tension springs. If the structure is not used, the frame with the net is standing when there is no wind or when the wind is weak. When a strong wind arrives, the net is blocked by the net, so the wind power becomes weak, and plants and facilities on the leeward side of the net are protected. At the same time, it is normal for the upper side of the support part to receive a stronger wind pressure, and it is tilted according to the wind pressure against the spring force of the tension spring, and as a result, the wind is warped upward. Therefore, a part of the equipment is not destroyed.
Moreover, depending on the terrain of the land to be installed, buildings on the windward, windbreaks, etc., considering that the principle that the higher the wind pressure is, the higher the wind pressure is, the lower position than the half height of the frame. The upper side is surely pushed down by the wind pressure only by increasing the area of the upper side by supporting it on the support column.

According to a second aspect of the present invention , a through space is interposed under the frame, and the tension spring is provided in this space. That is, as specified in the paragraph [0017], the lower side of the square frame f has the through space 13, so that the square frame f is pushed down according to the wind speed without interfering with the tension spring s. Warp the wind upward.

According to a third aspect of the present invention, a net having a fixed structure is stretched below the through space, and the through space is also closed with a net, but the net is loosely stretched so as not to obstruct the tension spring. That is, as specified at the end of paragraph [0017], the net 13 can be loosely stretched so as not to obstruct the tension spring s, rather than making the space 13 transparent, and a windproof net effect can be obtained. . Further, as clearly indicated at the end of the paragraph [0016], the net N is stretched to the ground with a through space 13 of about 30 cm below the square frame f. More specifically, horizontal bars 14, 15 and 16 are attached to the support bar members 6 and 6 on the front side, and the net N is attached using these. The space 13 can be arbitrarily spaced according to the topography and the like.

As in claim 4, on at least the left and right sides of an annular frame with a net in it, a position lower than a half of the height of the frame is supported by a support on a horizontal axis, and By always pulling the lower end of the frame downward with one or more tension springs, the rotation of the frame varies against the force of the tension springs depending on the incoming wind, and the wind is deflected in different directions. The Therefore, as specified in Paragraph [0019], the net device is rotated by the strong wind and operates to deflect the strong wind so that the facilities and crops are not damaged even if a strong wind comes. There is no risk of damage or damage. In addition, it is a simple device in which the square frame is automatically tilted by strong winds and the strong winds are warped to take measures against strong winds.

It is a perspective view which shows embodiment of the windproof net apparatus by this invention. It is an expansion perspective view which shows the attachment part to the support | pillar of a square frame. It is a front view which shows the state which uses the wind-proof net apparatus of FIG.

Next, an embodiment of how the windbreak net device according to the present invention is actually realized will be described in detail. FIG. 1 is a perspective view showing one set of windproof net devices according to the present invention, which is an example having a height of 4 m. A net n, for example, a 1 mm mesh insect-proof net is stretched in a rectangular frame f composed of the upper frame 1, the lower frame 2, the left frame 3, and the right frame 4.
Between the vertical frame 3 and the right vertical frame 4 on the left side, but is provided with the inner frame 5 for reinforcement, it may be a plurality of provided also between the upper frame 1 and the lower frame 2, One or more horizontal reinforcing frames may be provided.

For example, the horizontal axis a is passed in the middle of such a rectangular frame f, and the left and right sides are attached to the left and right vertical frames 3 and 4 via the bearing b as shown in FIG. e is fixed to the column.
The illustrated support has a stable structure in which two bar members 6 and 7 are connected in an inverted V shape, and the tip e of the horizontal shaft a is attached to the horizontal connecting member 8 at the upper end thereof. . Therefore, when the wind blows in the direction in which the net n is pressed against the horizontal axis a by the wind pressure, the net n is supported by the horizontal axis a. 9 is a connecting material near the lower end, which is horizontal.

A tension spring s is attached to a horizontal bar 10 attached between the connecting members 9 of the left and right columns via a hook 12 with a turnbuckle 11 for adjusting the length. The upper end of the tension spring s is attached to the lower frame 2. Therefore, the lower end of the frame f is always pulled downward by the three tension springs s. As a result, the net-covered square frame f stands vertically.
Below the square frame f, a net N is stretched to the ground with a through space 13 of about 30 cm. More specifically, horizontal bars 14, 15 and 16 are attached to the support bar members 6 and 6 on the front side, and the net N is attached using these. The space 13 can be arbitrarily spaced according to the topography and the like.

When the wind-proof net device having such a structure is erected in a row as shown in FIG. 3 to surround crops or facilities or is provided on the windward side, if a strong wind blows from the left side of FIG. Even if s is used, the square frame f can fall only about 30 cm even in a typhoon of 70 m.
At this time, the lower side of the square frame f has the through space 13, so that the square frame f is pushed down according to the wind speed without causing the tension spring s to be disturbed, and the wind is deflected upward. Further, even if turbulent flow occurs, each square frame f is pushed down independently, so that the windproof net device as a whole can operate smoothly.
When the space 13 is present, the wind passes through and thus reaches far. However, the space 13 has a narrow vertical distance, so that no damage is caused by the strong wind.
Instead of making the space 13 transparent, the net 17 can be loosely stretched so as not to obstruct the tension spring s to obtain a windproof net effect.

In the illustrated example, the half frame height f is supported on the column by the horizontal axis a, but the square frame f is relatively large so that the upper side of the square frame f is relatively large. It is also possible to support the position below the height of half of f on the support with the horizontal axis a. In addition, although the square frame f was illustrated, the external shape of the frame f is not restricted to a rectangle.
Further, the inverted V-shaped support column is an example, and the present invention is not limited to this. The nets n, N, and 17 have a free scale, and different scales may be used.

As described above, the net device is rotated by the strong wind so that the facilities and crops are not damaged even if a strong wind arrives, so that the strong wind is warped, so there is no fear of being destroyed or damaged. In addition, it is a simple device in which the square frame is automatically tilted by strong winds and the strong winds are warped to take measures against strong winds.

f Square frame a Horizontal shaft b Bearing e Tip n / N Net s Tension spring 13 Through space

Claims (4)

At least on both the left and right sides of the annular frame with a net in it, a position lower than a half height of the frame is supported on a support by a horizontal axis , and the lower end of the frame is supported by one or more tension springs Windproof net device with a structure that is always pulled downward. The windproof net device according to claim 1 , wherein a through space is interposed under the frame, and the tension spring is provided in the space . 2. A net having a fixed structure is stretched below the through space, and the through space is also closed with a net. The net is loosely stretched so as not to obstruct the tension spring. Item 3. The windproof net device according to Item 2. At least on both the left and right sides of the annular frame with a net inside, a position lower than the half height of the frame is rotatably supported by a support on a horizontal axis, and the lower end of the frame is at least one The wind-proofing by the wind-proof net is characterized in that the rotation of the frame is variable against the force of the tension spring according to the incoming wind, and the wind is deflected in a different direction Method.

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