JP2008148592A - Windbreak net - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a windbreak net facilitating attaching and detaching. <P>SOLUTION: This windbreak net has a plurality of supports (10), and a net panel (18) to be stretched between the supports. Each of the supports has a lower support (12) which is made of a tube-like member, and an upper support (14) which is to be rotatably inserted into the upper end of the lower support. The net panel has an oblong net (18a) and a pair of beams (18b) which are arranged on both the ends of the net. The net is so formed that a first beam receiving tool is set on the upper end of the upper support, and a second beam receiving tool is set near the lower end of the upper support, and the upper and lower ends of the beam are inserted into the first and second beam receiving tools by rotating the upper support so as to bring the net to a bent state, and the upper support is further rotated so as to bring the net to a tension state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention generally relates to windscreens. More particularly, the present invention relates to a windscreen that is easy to attach / remove.

  Since wind is a natural phenomenon that adversely affects agriculture, various wind countermeasures have been taken. As a typical wind countermeasure, the installation of windbreak forests and windbreak nets is known. Of these, the windbreak is a fixed facility, and its shape changes with the growth of the trees. Therefore, the windbreak is used as a supplement to maintain the windbreak function.

  FIG. 6 is a schematic perspective view showing a typical conventional windshield. The windbreak net shown in FIG. 6 connects each strut by passing a wire through a ring-shaped fixture (not shown) provided at the top, middle, and bottom of each strut, and places the net at a predetermined location. By connecting a fitting (not shown) attached to the mesh to the wire, the mesh is tensioned.

  However, in the conventional windbreak net, since the operation | work which tension | tensifies a net | network is complicated, there exists a subject that installation and installation cost of a windbreak net require a lot of work. In addition, the windbreak screen may be a hindrance to the spraying work when spraying agricultural chemicals, but the conventional windscreen is not easy to remove, which may hinder the work.

  The present invention has been developed to overcome the above-described problems of windshields in the prior art, and an object thereof is to provide a windshield that can be easily attached and detached.

  The windbreak net according to claim 1 includes a plurality of struts and a mesh panel stretched between adjacent struts, each of the struts being a lower strut formed of a tubular member, and the lower strut An upper support column that is rotatably inserted into an upper end of the upper support column, and the mesh panel includes a rectangular mesh and a pair of beams disposed on both edges of the mesh, and the first beam is disposed on the upper end of the upper support column. A receiver is provided, and a second beam receiver is provided in the vicinity of the lower end of the upper column, and the first and second beams are rotated by rotating the upper column so that the net is bent. The upper and lower ends of the beam are inserted into a receiver, and the upper support column is further rotated to place the net in a tension state.

  The windshield according to claim 2 of the present application is characterized in that, in the windshield according to claim 1, the upper column is formed of a tubular member having an outer diameter slightly smaller than an inner diameter of the lower column. To do.

  The windbreak net according to claim 3 of the present application is the windbreak mesh according to claim 1 or 2, further comprising upper strut rotation locking means for locking the rotation of the upper strut. It is.

  The windbreak net according to claim 4 of the present application is the windbreak mesh according to claim 3, wherein the upper column rotation locking means is separated from a bolt shaft provided with a male screw and one end of the bolt shaft at an angle of 120 °. Three bolts attached thereto, and a nut fixed to an outer wall where an opening provided at a position slightly below the upper end of the lower column is positioned, and the bolt shaft screwed into the nut is It is configured to lock the rotation of the upper column by rotating and pressing the tip against the outer wall of the upper column.

According to the present invention, as long as the upper support column is rotated, the net can be in a tensioned state, so that the windbreak net can be easily attached and detached, contributing to shortening the construction period and cost reduction of the installation work. It becomes possible to do. Also, by using the upper strut rotation locking means, if you step on the rectangular plate, you can lock the rotation of the upper strut, so you can perform installation and removal work more quickly without bending. become.

  Next, a windscreen according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. The windbreak net according to a preferred embodiment of the present invention includes a plurality of struts 10 and a net panel 18 stretched between adjacent struts 10. FIG. 1 is a schematic perspective view showing the column 10 in an assembled state. The column 10 includes a lower column 12 formed of a tubular member and an upper column 14 formed of a tubular member having an outer diameter slightly smaller than the inner diameter of the lower column 12.

  A first beam receiver is provided at the upper end of the upper column 14. The first beam receiver includes a pair of cylindrical members 14a disposed at a predetermined interval in a direction away from a diametrically opposite portion 14a1 of the upper support column 14 (see FIG. 2B). , And a connecting member 14b for fixing each cylindrical member 14a to the upper support column 14, respectively.

  A second beam receiver is provided at a position above the lower end of the upper column 14 by a predetermined distance h (see FIG. 2A). The second beam receiver includes a pair of cylindrical members 14c disposed at a predetermined distance in a direction away from a portion 14c1 (see FIG. 2C) facing the diameter direction of the upper support column 14. , And a connecting member 14d for fixing each cylindrical member 14c to the upper support column 14, respectively. In addition, as shown in FIG. 2A, a bottom wall 14c2 is attached to each cylindrical member 14c.

  The column 10 is used by inserting the lower part of the upper column 14 into the upper part of the lower column 12. Since the outer diameter of the upper column 14 is slightly smaller than the inner diameter of the lower column 12, the lower part of the upper column 14 can be inserted into the upper part of the lower column 12, but the lower part of the upper column 14 is connected to the upper part of the lower column 12. Since the upper end of the lower column 12 hits the connecting member 14d of the upper column 14, the insertion length of the upper column 14 into the lower column 12 is h.

  The windbreak net is also provided with an upper column rotation locking means 16 for locking the rotation of the upper column inserted into the lower column 12. As shown best in FIG. 3, the upper column rotation locking means 16 includes a bolt shaft 16a provided with a male screw, and three rectangular plates 16b attached to one end of the bolt shaft 16a at an angle of 120 °. And a nut 16c fixed by welding or the like to the outer wall where the opening 12a provided at a position slightly below the upper end of the lower support column 12 is located. Then, when the bolt shaft 16a is screwed into the nut 16c and the rotation of the upper column 14 is to be locked, the rectangular plate 16b is stepped on with the foot, the bolt shaft 16a is rotated, and the tip is attached to the outer wall of the upper column 14. By pressing, the rotation of the upper column 14 can be locked.

  As shown in FIG. 4, the net panel 18 includes a rectangular net 18a and a pair of beams 18b disposed on both edges of the net 18a. For example, a polyethylene raschel weave (2 mm mesh) net is used as the net 18a, and a galvanized steel pipe is used as the beam 18b.

  Next, with reference to FIG. 5, the use of the windscreen of the present invention configured as described above will be described. First, the support | pillar 10 is arrange | positioned by the predetermined space | interval in the location which is going to install a windbreak net (refer Fig.5 (a)). At that time, the upper support column 14 is inserted after the lower support column 12 is driven into the ground. Next, the upper end of the beam 18b is inserted into the cylindrical member 14a of the first beam receiver of the upper support column 14, and the lower end of the beam 18b is inserted into the cylindrical member 14c of the second beam receiver (see FIG. 5B). At that time, the upper support column 14 is rotated so that the cylindrical members 14 a and 14 c are positioned in a plane including the adjacent support column 10. The net 18a is bent as shown in FIG. 5 (b). Next, when the beams 18b located on both sides of the support are grasped with the left and right hands and rotated in the direction indicated by the arrows in FIG. 5C, the net 18a is in a tensioned state. Finally, when the rectangular plate 16b of the upper column rotation locking means 16 is stepped on, the rotation of the upper column 14 is locked (see FIG. 5D). A windbreak net is installed by performing the above operation | work for every diameter of a support | pillar.

  When a part of the windbreak net is to be removed when spraying agricultural chemicals, etc., the upper column rotation locking means 16 of the column 10 at the position to be removed is loosened and the upper column 14 is rotated to rotate the mesh 18a. After the beam is bent, by removing the beam 18b from the beam receiver, it is possible to easily remove the windbreak net at a desired location.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

  For example, the upper column rotation locking means 16 shown in the above embodiment locks the rotation of the upper column 14 by pressing the tip of the bolt against the outer wall of the upper column 14. The rotation of the upper column 14 may be locked by means.

It is the perspective view which showed the support | pillar of the windbreak net | network which concerns on preferable embodiment of this invention. 2A is an exploded cross-sectional view of the column of FIG. 1, FIG. 2B is a plan view taken along line 2b-2b of FIG. 2A, and FIG. 2C is FIG. 2A. It is sectional drawing seen along line 2c-2c. It is the expanded sectional view which showed the part 3 of Fig.2 (a). It is the perspective view which showed the net | network of the windbreak net | network which concerns on preferable embodiment of this invention. It is a series of figures which showed the installation procedure of the windbreak network which concerns on preferable embodiment of this invention. It is the perspective view which showed the conventional typical windscreen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Support | pillar 12 Lower support | pillar 14 Upper support | pillar 14a, 14c Cylindrical member 14b, 14d Connecting member 16 Upper support | pillar rotation locking means 16a Bolt shaft 16b Rectangular plate 16c Nut 18 Net panel 18a Net 18b Beam

Claims (4)

A plurality of support columns and a net panel stretched between the adjacent support columns,
Each of the columns has a lower column formed of a tubular member, and an upper column that is rotatably inserted into the upper end of the lower column,
The mesh panel has a rectangular mesh and a pair of beams disposed on both edges of the mesh,
A first beam receiver is provided at the upper end of the upper column, and a second beam receiver is provided near the lower end of the upper column;
The upper strut is rotated so that the net is bent, the upper and lower ends of the beam are inserted into the first and second beam receivers, and the upper strut is further rotated to further rotate the net. A windscreen characterized in that the windscreen is configured to be in tension. The windbreak net according to claim 1, wherein the upper support column is formed of a tubular member having an outer diameter slightly smaller than an inner diameter of the lower support column. The windbreak net according to claim 1 or 2, further comprising upper column rotation locking means for locking rotation of the upper column. The upper strut rotation locking means includes a bolt shaft provided with a male screw, three rectangular plates attached to one end of the bolt shaft at an angle of 120 °, and slightly below the upper end of the lower strut. A nut fixed to the outer wall where the opening provided at the location is located, and rotating the bolt shaft screwed into the nut to press the tip against the outer wall of the upper column to rotate the upper column. The windbreak net according to claim 3, wherein the windbreak net is configured to be locked.

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