JPH0712408Y2 - Double structure net device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a net device for windproof, sandproof, dustproof, snowproof, and the like. The present invention relates to an improvement of a double-structured net device which is stretched.

[Conventional technology]

Conventional nets such as windbreaks consisted of a single protective surface with the nets stretched over stanchions, but in order to enhance the speed reduction effect of the wind, a double-structured net with the nets stretched back and forth has also been devised. (For example, Jitsuko Sho 53-10762).

As the net to be stretched, a net body (also made of expanded metal) or a perforated plate is appropriately selected and used.

In the double structure net, the space between the front and rear nets is open at the upper and side ends (Fig. 3).

[Problems to be solved by the device]

In the conventional double-structured net, first, the wind is received by the front net, and the wind that is decelerated and passed is further decelerated and passed by the rear net, and dust blown up with the wind, When the wind is decelerated, sand, snow, etc. fall downward, fall, and are stacked on the front part of the front net, the front part (between front and rear nets) and the rear part of the rear net, and the wind in a certain area downwind and It protects against disasters caused by dust, sand, or snow.

However, the wind that has passed through the front net does not pass through the rear net as it is, but a part of it rises after passing through the front net and escapes from the upper open space between the front and rear nets or escapes from the side face. Therefore, when sand or the like rides on the wind that escapes and passes above the net on the rear surface, the sand or the like falls after the passage, and the purpose of preventing wind and sand in the area to be protected cannot be achieved.

In view of this, the present invention has an object to improve a net having a double structure so that the wind passing through the front net passes through the second net on the rear surface.

[Means for Solving the Problems]

The present invention is a double-structured net device in which nets are stretched on front and rear columns that are juxtaposed at appropriate intervals in the front and back. , The upper part between the front and rear nets is shielded.

In the second invention, a net is stretched over the side end faces between the nets to shield the front and rear nets from the side.

[Action]

Since the present invention stretches the nets back and forth and also has a net on the upper surface between the stretched front and back nets,
The wind that has passed through the front net will always pass through the rear net, the top net, or the side net,
It has a two-step air reducing effect and a drop stacking effect such as sand.

〔Example〕

FIG. 1 is a side view showing an embodiment of the present invention, in which front columns (1) are arranged side by side, rear columns (2) are arranged side by side, and front columns (1) are arranged side by side. (1) A perforated plate (3) bent in the front-rear direction is stretched on the front surface between the columns, and the nets (4) are stretched on the rear surface between the columns (2) (2) ... In addition, the net body (5) is provided on the upper surface between the columns (1) and (2).

A reinforcing member (6) is provided over the front support column (1) and the rear support column (2) to prevent tilting.

FIG. 2 is a side view showing another embodiment, in which mesh bodies (4) are also stretched on both end faces, and one of the front and rear struts that have abutted to each other is extended forward to incline the net. The configuration is adapted to the deceleration of the wind trying to pass through above.

By stretching the net body (4) also on the side surfaces, it is possible to exert an effect such as reducing wind on the wind that escapes from the side surface between the front and rear nets.

In each example, the perforated plate (3) bent to the front column (1),
The rear support (2) and the side surface between the two supports are stretched with a mesh body (4), but a bent perforated plate used as a net for wind protection, a flat perforated plate, or various materials. The net body is appropriately selected and used in combination.

[Effect of device]

As described above, the present invention provides a dual structure net device,
Since the upper open space between the front and rear nets is shielded by the net, the wind that has passed through the front net will always pass through the rear net, the top net, or the side net, and will be decelerated twice. The effect of windproof, sandproof, dustproof and snowproof can be surely obtained.

[Brief description of drawings]

1 and 2 are side views showing an embodiment of the present invention, and FIG. 3 is a side view of a conventional net device. Reference numeral (1) is a front strut (2) is a rear strut (3) is a perforated plate (net) (4) (5) is a net (net)

Claims (2)

[Scope of utility model registration request] 1. In a net device having a double structure in which nets are stretched on front and rear columns which are juxtaposed at appropriate intervals in front and back, a net is stretched on the upper surface between the nets stretched in the front and rear. However, the double-structured net device is characterized by shielding the upper part between the front and rear nets. 2. The dual structure according to claim 1, wherein the nets are stretched on both end faces between the front and rear nets, and the sides between the front and rear nets are shielded. Net equipment.