JP6783090B2 - Fruit tree shelf and its installation method - Google Patents

Description

The present invention relates to a fruit shelf for cultivating fruit trees such as grapes, kiwifruit, pears, and plums, and a method for installing the same.

Conventionally, in fields where fruit trees such as grapes, kiwifruit, pears, and plums are cultivated, cultivation using a type of fruit shelf called a flat shelf has been carried out. By installing a shelf surface made of wires, etc. at a position slightly higher than the height of the grower and cultivating branches and vines along the shelf surface, the fruits can be homogenized by even sunlight. It has the advantage of being excellent in workability of various operations such as harvesting.

7 to 10 show an example of such a fruit shelf. As shown in FIGS. 7 to 9, the fruit tree shelf 1 installed in the field has a shelf surface 2 having a rectangular shape as a whole, and each side of the shelf surface 2 has, for example, 45 from the inside to the outside upper side. Inclined columns 3 having an inclination angle of about 1 ° are fixed at equal intervals with a required interval (usually about 2200 mm). The inclined pillar 3 is generally made of concrete, and its lower end is buried and fixed in the ground. Further, in the corner portion of the field, an inclined pillar 3'is provided so as to bisect the corner portion in a plan view, and the inclined pillar 3'also inclines from the inside to the outside upper side, for example, about 45 °. It is installed at the corner.

As shown in FIG. 10, step portions 3a and 3b are formed at the corners on the outer and upper sides of the shelf surface 2 at the upper end of each inclined column 3 (3'), respectively. A peripheral line 4 is fitted to the outer step portion 3a of each inclined column 3 (3'), and the peripheral line 4 allows the upper ends of all the inclined columns 3 (3') to be pulled from the surroundings with a predetermined tension. It is tied up to surround it. For the peripheral wire 4, for example, a wire-like wire obtained by twisting seven fruit tree steel wires having a diameter of 2 mm is used.

Further, a pull-down line 5 is hung a plurality of times on the upper step portion 3b of the upper end portion of each inclined pillar 3 (3'), and the upper end portion of the inclined pillar 3 (3') is firmly fixed. The lower end of 5 is fixed to an anchor 6 provided in the ground. In this way, the pull-down line 5 and the anchor 6 prevent the inclined pillar 3 from rising (being fanned) by receiving the tension acting on the peripheral line 4. Similar to the peripheral wire 4, the pull-down wire 5 is made by twisting seven fruit tree steel wires.

As shown in FIGS. 7 and 9, a tension wire 7a extending in the left-right direction and a tension wire 7b extending in the depth direction are stretched between the inclined columns 3 provided on the two opposite sides of the rectangular shelf surface 2. The tension wires 7a in the left-right direction and the tension wires 7b in the depth direction are woven alternately up and down in a mesh pattern. In this way, squares at intervals of 2200 mm are formed in a plan view at the height position of the upper end of the inclined pillar 3 in the field. For the tension wires 7a and 7b, for example, wire-shaped ones obtained by twisting three fruit tree steel wires are used.

Further, between the tension wire 7a in the left-right direction and the tension wire 7b in the depth direction, the tension wire 8a in the left-right direction and the tension wire 8a in the depth direction are stretched between the facing peripheral lines 4 at intervals of about 30 to 40 mm. A line 8b is provided. A single fruit tree steel wire is used for the small tension wires 8a and 8b, and is arranged so as to cover the upper side of the tension wires 7a and 7b.

The small squares 8a and 8b form squares at small intervals of about 300 to 400 mm, and the small squares form a shelf surface 2 that supports branches and vines extending in the horizontal direction of the fruit tree. Further, as shown in FIG. 7, vertical intermediate columns 9 are provided at appropriate positions where the tension wires 7a and 7b intersect to support the tension wires 7a and 7b.

As a document showing a general technical level regarding this kind of fruit tree shelf, for example, there is the following Patent Document 1 and the like.

Japanese Unexamined Patent Publication No. 2014-96992

In the case of the fruit tree shelf 1 of the type in which the shelf surface 2 formed of the wire as described above is supported by the inclined columns 3 (3'), a delicate balance is required for the tension applied between the inclined columns 3 (3'). .. That is, as described above, the peripheral lines 4 and the tension lines 7a and 7b are stretched between the inclined columns 3 (3'), and the small tension lines 8a and 8b are also stretched between the tension lines 7a and 7b. These tensions are applied horizontally to the upper end of the inclined column 3 (3'), but the inclined column 3 (3') opposes this tension and causes the peripheral line 4, the tension lines 7a, 7b, and the small tension line. By supporting 8a and 8b, the shape of the shelf surface 2 is maintained. Further, if fruit tree branches and vines grow along the shelf surface 2, these loads are also applied to the inclined pillar 3 (3') as tension. The inclination angle of the inclined column 3 (3'), the pull-down line 5, and the anchor 6 are configured to withstand such tension applied inward along the shelf surface 2.

Therefore, when the inclined pillar 3 (3') is erected in the field and the peripheral lines 4, the tension lines 7a, 7b, and the tension lines 8a, 8b are stretched, the load that increases with the growth of fruit trees is also taken into consideration. While doing so, the angle of the inclined column 3 (3') and the pull-down line 5 so that the inclined column 3 (3') does not fall or rise, and the tension lines 7a and 7b and the small tension lines 8a and 8b do not loosen excessively. It is necessary to appropriately adjust the tension, the tensions of the peripheral wires 4 and the tension wires 7a and 7b. Moreover, in order to ensure workability related to fruit tree cultivation, it is necessary to form the shelf surface 2 at an appropriate height above the grower, and this "appropriate height" varies depending on the height of the grower. Therefore, fine adjustment is required in this respect as well. In addition, (for convenience of explanation, a flat field or a fruit shelf 1 is shown here), a field of fruit trees is often set up on a slope, and in that case, it is uniform along the slope. A shelf surface 2 of height must be formed.

Inevitably, the work of setting up the fruit tree shelf 1 is a craftsman's work that requires specialized knowledge and skill as well as being extremely time-consuming, and the fruit tree shelf 1 can be set up as described above. The reality is that the number of skilled personnel is decreasing year by year. In addition, the number of manufacturers that manufacture concrete columns for making inclined columns 3 (3') is decreasing. On the other hand, these fruit shelves installed in the past are aging and need to be renewed. Therefore, there has been a demand for the development of a new fruit shelf that can be set up by anyone with a simple structure without requiring skill in the work required for setting up.

In view of such circumstances, the present invention intends to provide a fruit tree shelf capable of preferably forming a shelf surface with a simple structure and a method for installing the fruit tree shelf.

The present invention includes a strut erected in a field, a beam connected to a predetermined height of the strut, and a tension wire stretched over the beam, and the beam and the tension wire form a shelf surface. Then, at least a part of the columns protrudes above the shelf surface, and a suspension wire is stretched from a portion protruding above the shelf surface to the surrounding beam or tension wire to extend the beam or tension wire. is configured to support a front end of the strut, which relates to a fruit shelf, characterized in that the vertical inter-branch and halide during the connecting portion between the strut and the beam.

Thus, in this way, the fruit shelf can be easily installed without going through a complicated and skillful process. In addition, it is relatively easy to set the height of the shelf surface and to form the shelf surface corresponding to various terrains.

In the fruit tree shelf of the present invention, at the tip of the support column, a shaft portion that fits the support column, an umbrella portion that covers one end of the shaft portion and is formed so as to extend radially outward of the shaft portion, and an umbrella portion. It is preferable to arrange a cap having a hole to open in the umbrella portion, and in this way, the suspension wire can be easily stretched by winding the end portion of the suspension wire around the hole.

In the fruit tree shelf of the present invention, among the columns, the connecting portion between the column located at the corner and the beam and the vicinity of the ground of the column adjacent to the column located at the corner can be connected by a brace. Preferably, in this way, the stanchions located at the corners can be reinforced against the force of collapsing in the direction of the adjacent stanchions.

In the fruit tree shelf of the present invention, among the columns, between the connecting portion between the column and the beam located at the corner and the connecting portion between the column and the beam located inside the outer periphery of the shelf surface in the vicinity thereof. It is preferable to connect the columns by bracing, and in this way, it is possible to prevent the columns from falling over against the force of pulling the columns located at the corners inward of the shelf surface.

In the fruit tree shelf of the present invention, the columns and the beams are preferably pipes, and the pipes are preferably connected by a connecting tool provided with a clamp portion for sandwiching the pipes. You can easily perform tasks such as changing the height of the pipe and adjusting the orientation.

In the fruit tree shelf of the present invention, it is preferable to extend the branch line between the columns between the tips of the columns, and in this way, the columns support each other through the tension of the branch line between the columns. In addition, a bird net, a rain shelter house, etc. can be installed on the branch line between the columns.

Further, in the present invention, a support is erected in a field, a beam is connected to a predetermined height of the support, a tension wire is stretched over the beam, and a shelf surface is formed by the beam and the tension wire, and the shelf is formed. A suspension wire is stretched from the support column projected to a position higher than the surface to the surrounding beam or the tension wire to support the beam or the tension wire, and the tip of the support column and a connecting portion between the support column and the beam. It is related to the installation method of the fruit tree shelf, which is characterized by extending the upper and lower branch lines between the two.

According to the fruit tree shelf of the present invention and the installation method thereof, an excellent effect that the shelf surface can be suitably formed with a simple structure can be obtained.

It is a top view which shows the whole structure of the fruit tree shelf by carrying out this invention. FIG. 1 is a front view seen from the II-II direction. It is a perspective view which shows a part of the fruit tree shelf by carrying out this invention. It is a figure which shows the connector used for carrying out this invention, (A) is a front view, (B) is a side sectional view which (A) was seen from the IVB-IVB direction. It is a perspective view which shows the part of this invention enlarged. It is a flowchart explaining the installation procedure of the fruit tree shelf of this invention. It is a top view which shows a part of the conventional fruit tree shelf. FIG. 7 is a front view seen from the VIII-VIII direction. It is a top view which shows the part of FIG. 7 enlarged. It is a side view of the inclined pillar provided in the conventional fruit tree shelf.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 5 show an example of the form of a fruit shelf according to the implementation of the present invention. As shown in FIGS. 1 to 3, the fruit tree shelf 10 of this embodiment is connected to a plurality of columns 12 vertically erected in a field and to the columns 12 at a predetermined height in an orientation along the ground. It is provided with a beam 13 to be formed.

The columns 12 and beams 13 are formed as metal pipes 15, and as shown in FIG. 4, they are connected to each other by a clamp-type connector 14. The connector 14 is formed by rotatably connecting two clamp portions 14a and 14a to each other, and each clamp portion 14a can be fixed by sandwiching the pipe 15 from the outside and tightening with bolts 14b. It has become. At this time, since the clamp portions 14a and 14a are rotatable with each other, the angle formed by the connected pipes 15 and 15 can be freely set.

As shown in FIGS. 1 and 2, the columns 12 are arranged at equal intervals in the vertical and horizontal directions in a plan view with an interval of, for example, 4500 mm. Of the columns 12, the columns 12a located on the outer periphery of the shelf surface 11 have, for example, a total length of 3000 mm and a ground clearance of 2500 mm, and 500 mm at the lower end is buried and fixed in the ground. The support column 12b located inside the outer circumference of the shelf surface 11 has, for example, a total length of 4500 mm and a ground clearance of 4000 mm, and the lower end of 500 mm is buried and fixed in the ground.

A beam 13 is stretched between adjacent columns 12 (12a, 12b) at a predetermined height from the ground, and as shown in FIG. 1, a grid-like frame is formed vertically and horizontally in a plan view. The beam 13 is connected to the support column 12 by the connecting tool 14 (see FIG. 4) as described above. When the distance between the columns 12 is 4500 mm, the squares formed by the beams 13 have a side of 4500 mm.

From the viewpoint of workability at the time of installation and the balance of forces related to the suspension wire 18 described later, it is preferable that the squares formed by the beams 13 are generally square, but the square shape is not essential and the shape of the field. It may be changed as appropriate depending on the circumstances such as. In the example shown here, the square located at the right end in FIG. 1 has a lateral dimension of 2000 mm, which is different from the squares of other portions (length 4500 mm × width 4500 mm).

A tension wire 16 is stretched between the beams 13 facing each other. For convenience of explanation, in most of FIGS. 1, one vertical and horizontal stretched wire 16 is shown for each square formed by the beam 13, but the number of stretched wires 16 actually stretched is cultivated. The number may be larger depending on the type of fruit tree to be produced (the lower left portion of FIG. 1 and FIG. 3 show a case where a plurality of stretched wires 16 are stretched vertically and horizontally for each square). .. As the tension wire 16, for example, a wire-like wire obtained by twisting three to seven fruit tree steel wires having a diameter of 2 mm can be used.

In this way, the shelf surface 11 is formed by the beam 13 connected to the support column 12 and assembled in a square shape, and the tension wire 16 stretched over the beam 13. The height of the shelf surface 11 is preferably set to a level slightly exceeding the height of the grower from the viewpoint of workability related to cultivation, for example, 2000 mm from the ground.

The tip of each support column 12 is covered with a cap 17 as shown in FIG. The cap 17 includes a shaft portion 17a that fits into the tip of a pipe 15 that forms a support column 12, and an umbrella portion 17b that covers one end of the shaft portion 17a and is formed so as to extend radially outward of the shaft portion 17a. It becomes. The shaft portion 17a is fitted to the tip of the pipe 15 and then crimped together with the pipe 15 so that the cap 17 is fixed so as not to shift with respect to the pipe 15. The umbrella portion 17b is provided with a hole 17c for passing a suspension wire 18 or the like, which will be described later. The shape of the umbrella portion 17b may be any shape, but from the viewpoint of preventing the accumulation of rainwater, it is preferable to have an upwardly convex dome shape as shown here.

At least a part of the support columns 12 protrudes higher than the shelf surface 11, and as shown in FIG. 3, a suspension line 18 is drawn downward from the tip toward the surrounding beam 13 and the tension wire 16. (In this embodiment, all the columns 12 project higher than the shelf surface 11, but the suspension line 18 is drawn from the tip only to the columns 12b located inside the outer circumference of the shelf surface 11. The suspension line 18 is not drawn from the support column 12a located on the outer periphery of the shelf surface 11). The upper end of the suspension wire 18 is wound around the hole 17c (see FIG. 5) of the cap 17 fitted to the tip of the support column 12b, and the lower end of the suspension line 18 is wound around the beam 13 or the tension wire 16 located around the support column 12b. Be done. In this way, by arranging the cap 17 (see FIG. 5) provided with the holes 17c at the tip of the support column 12b, the suspension line 18 can be easily stretched.

Although the suspension wire 18 is drawn from the tip of the support column 12b here, the position where the suspension line 18 is stretched on the support column 12b does not necessarily have to be the tip end, and the portion of the support column 12b protruding above the shelf surface 11. All you need is. However, a method in which the cap 17 as described above is attached to the tip and the suspension wire 18 is stretched is particularly simple.

Tension is applied between the tip of the support column 12b and the beam 13 or the tension wire 16 by the suspension wire 18, and the beam 13 and the tension wire 16 are suspended from the support column 12b via the suspension line 18 by the tension in the diagonally upward direction. Supported by. As the suspension wire 18, for example, a wire-like wire obtained by twisting three to seven fruit tree steel wires can be used.

From the viewpoint of balancing the forces applied to the columns 12b, the suspension lines 18 are preferably provided symmetrically with respect to each column 12b. In the case of this embodiment, as shown in FIG. 1, one column 12b located inside the outer circumference is vertically and horizontally adjacent to the other four columns 12 (12a, 12b) in a plan view, and the four columns 12b are adjacent to each other. Beams 13 in four directions, front, back, left and right, are stretched between the columns 12 (12a, 12b). Further, a total of four squares are formed by the beams 13 around one support column 12b in a plan view. Then, from the tip of one support column 12b, a total of four suspension lines 18 are drawn toward the beams 13 in the four directions of front, back, left and right, and further toward the tension lines 16 stretched over the four squares. A total of four suspension lines 18 are drawn. The position where the suspension wire 18 is wound on the beam 13 is, for example, an intermediate portion between adjacent columns 12b, and the position where the suspension wire 18 is wound on the tension wire 16 is, for example, the square formed by the beam 13. It is the central part. In this way, a total of eight tension wires 16 are evenly drawn from the respective columns 12b located inside the outer circumference of the shelf surface 11 to the surrounding beams 13 or tension wires 16, and the beams 13 and tension wires 16 are supported in a well-balanced manner. It is designed to do.

The above description is based on the premise that the four squares formed by the beams 13 around the support columns 12b are square, but the beams 13 are not necessarily assembled in a square shape on the shelf surface 11. Is not always. For example, in this embodiment, the square located at the right end of FIG. 1 has a rectangular shape having a short lateral dimension. Therefore, in FIG. 1, in the support column 12b located one left from the support column 12a at the right end of the shelf surface 11, the arrangement of the suspension line 18 is slightly different from the above description. For example, the suspension wire 18 extending from the support column 12b in the upper right or lower right direction in a plan view is wound around the intermediate portion of the beam 13 forming the outer circumference of the shelf surface 11 instead of the tension wire 16. In addition, the squares of the other parts are 4500 mm long x 4500 mm wide, while the squares at the right end are 4500 mm long x 2000 mm wide, which is a little less than half the size in the horizontal direction, so one left from the right end. In the support column 12b, the dimension of the suspension line 18 extending to the right is slightly shorter than that of the suspension line 18 extending to the left in a plan view.

Although the arrangement of the suspension lines 18 is not completely uniform with respect to the columns 12b, they are approximately uniform, and such unevenness is mechanically sufficiently acceptable. Further, depending on the shape of the field, it is assumed that the beams 13 constituting the shelf surface 11 are assembled in a shape other than a rectangle, for example, a triangular shape, but even in such a case, the suspension line 18 is approximately relative to the support column 12b. Evenly distributed is sufficient. In any case, as long as the tension between the suspension lines 18 is not significantly biased and the support columns 12b are not tilted or the shape of the shelf surface 11 cannot be maintained properly, the arrangement of the suspension lines 18 is somewhat different. Unevenness can be tolerated. In the first place, it is inevitable that the tension of the suspension line 18 will be slightly imbalanced depending on the growth condition of the fruit tree, the quality of the ground, etc. Also, if the support 12b is fixed to the ground with sufficient strength, The strut 12b does not tilt due to some imbalance.

As shown in FIGS. 2 and 3, a branch line 19 between columns is stretched between the tips of the columns 12 (12a, 12b) that are vertically and horizontally adjacent to each other in a plan view. The support line 19 is stretched between the caps 17 attached to the tip of the support column 12, and the columns 12 support each other through the tension of the support line 19 between the columns. Bird nets, rain shelters, etc. can be installed on the branch line 19. As the branch line 19 between the columns, for example, a wire-like wire obtained by twisting three to seven fruit tree steel wires can be used.

Among the columns 12a located on the outer periphery of the shelf surface 11, the columns 12a located at the four corners correspond to the intersections of the vertical and horizontal beams 13 surrounding the outer periphery of the shelf surface 11 and receive loads from both directions toward the inside of the shelf surface 11. Therefore, it is a part of the fruit tree shelf 10 that requires special measures against the load. Therefore, as shown in FIGS. 1 and 3, a brace 20 (20a, 20b) is provided in the vicinity of the support column 12a at this position in three directions to reinforce the support column 12a against a load in the direction of tilting inward of the shelf surface 11. It has a structure.

The brace 20 is composed of a pipe 15 similar to the support column 12 and the beam 13. As shown in FIGS. 1 and 3, of the three braces 20 provided for each of the columns 12a located at the corners, two (braces 20a) form the outer circumference of the shelf surface 11 in a plan view. The remaining one (bracing 20b) is arranged along the beam 13 of the above, so as to divide the angle formed by the braces 20a and 20a into two in a plan view.

The braces 20a and 20a are fixed to the connecting portion between the support column 12a and the beam 13 whose ends are located at the corners (note that here, the case where one end of the brace 20a is fixed to the beam 13 is illustrated, but fixed. The position may be near the connection point between the support column 12a and the beam 13, and may be fixed to the support column 12a, for example), and the other end is located near the ground of the support column 12a adjacent to the support column 12a located at the corner. It is fixed. In this way, by providing the brace 20a along the diagonal line of the quadrangle formed by the two columns 12a, the beam 13, and the ground, the corner columns 12a are against the force of collapsing in the direction of the adjacent columns 12a. I try to reinforce it.

The brace 20b is fixed to the connecting portion between the strut 12a located at the corner and the beam 13 at one end (note that the fixing position may be near the connecting point, and one end of the brace 20b is fixed to the strut 12a. It may be fixed to the beam 13), and the other end is fixed to the connecting portion between the support column 12b and the beam 13 located in the vicinity (again, the fixing position of the other end of the brace 20b may be the support column 12b). However, the beam 13 may also be used), and the columns 12a located at the corners and the columns 12b located inside the outer circumference are connected in a gate shape. In this way, the force of pulling the support column 12a located at the corner to the inside of the shelf surface 11 is resisted by the support column 12a and the support column 12b instead of the support column 12a alone, and the support column 12a is less likely to fall down. can do.

As the support column 12b connected to the support column 12a via the brace 20b, a support column 12b in the vicinity that is easily connected to the support column 12a may be appropriately selected, and it is not always necessary to use the support column 12b located in the immediate vicinity. In the example shown here, the columns 12a located in the upper left and lower left corners of FIG. 1 are connected to the nearest column 12b by the brace 20b, but the columns 12a located in the upper right and lower right corners of FIG. 1 Is connected to the strut 12b immediately adjacent to the nearest strut 12b.

That is, from a mechanical point of view, it is most desirable that the brace 20b is arranged so as to bisect the angle formed by the two brace 20a, 20a in a plan view, and in fact, the upper left and lower left of FIG. The brace 20b located in the corner of is so arranged. However, the strut 12b is not always located at a position where the brace 20b can be arranged exactly in such an orientation. In that case, the brace 12b connected to the corner brace 12a may be selected so that the brace 20b can be arranged in a direction as close as possible to bisect the angle formed by the brace 20a and 20a. Specifically, the orientation of the brace 20b can be tolerated as long as the deviation is about plus or minus 15 ° in a plan view centering on the direction in which the angle formed by the brace 20a and 20a is bisected. On the other hand, in terms of connection strength, it is preferable that the brace 20b is configured as one pipe 15, so that the support column 12b connected to the support column 12a located at the corner is located at a position not so far from the support column 12a at the corner. The stanchion 12b should not be selected. In the brace 20b located at the upper right and lower right of FIG. 1, due to such circumstances, the brace 12a located at the corner is not the brace 12b located closest to the brace, but the brace 20b with the brace 12b to the left of the strut 12b. Are connected by.

The columns 12, the beams 13 and the brace 20 are connected to each other by a connecting tool 14 as shown in FIG. 4, but the illustration is omitted in FIG. 3 for convenience of explanation.

As shown in FIG. 3, a vertical branch line 21 is stretched along the support column 12 between the support column 12a and the connecting portion between the support column 12 and the beam 13. The upper part of the upper and lower branch lines 21 is wound around the cap 17 at the tip of the support column 12, and the lower part is wound around the connecting portion between the support column 12a or the support column 12b, the beam 13, and the connecting tool 14 (see FIG. 4). In this way, the beam 13 is suspended from the cap 17 located directly above the support column 12 by the upper and lower branch lines 21 at the connecting position with the support column 12, and the beam 13 is hung from its own weight, the tension wire 16 or the branch or vine of the fruit tree. It prevents the position from shifting downward along the support column 12 due to the load in the direction. As the upper and lower branch lines 21, for example, a wire-like wire obtained by twisting three to seven fruit tree steel wires having a diameter of 2 mm can be used.

An example of the method for installing the fruit shelf of the present embodiment as described above will be described with reference to the procedure shown in the flowchart of FIG.

First, as step S1, a support column 12 having a cap 17 attached to the tip thereof is erected on the ground. For example, by arranging as shown in FIGS. 1 to 3, the lower end of the pipe 15 forming the support column 12 is embedded in the ground by a predetermined length, and concrete or the like is poured and fixed. As step S2, the beam 13 is connected to a predetermined height of the erected support column 12 (at a position slightly higher than the height of the grower in consideration of workability in fruit tree cultivation, for example, about 2000 mm from the ground). The pipes 15 forming the columns 12 and the beams 13 are connected to each other by the connecting tool 14 (see FIG. 4). As step S3, braces 20a and 20b are installed between the support columns 12a located at the corner and the support columns 12a and 12b in the vicinity thereof.

As step S4, the tension wire 16 is stretched between the beams 13 to form the shelf surface 11. As step S5, the suspension wire 18 is stretched from the cap 17 at the tip of the support column 12b to an appropriate position of the beam 13 and the tension wire 16. Further, as step S6, a branch line 19 between columns is stretched between the caps 17 at the tip of the column 12, and a vertical branch line 21 is provided between the cap 17 at the tip of the column 12 and the connecting structure with the beam 13. Stretch it over.

As described above, in the fruit tree shelf 10 of the present embodiment, the tension wire 16 is stretched over the beam 13 connected to the support column 12 to form the shelf surface 11, and further, the support column 12b protruding higher than the shelf surface 11 The beam 13 and the tension wire 16 are supported by the suspension wire 18 from the tip. Further, the support columns 12a located at the corners are reinforced against tension by the three braces 20.

That is, in the fruit tree shelf 1 (see FIGS. 7 to 10) of the above-mentioned conventional example, tension is applied to the shelf surface 2 by tying the tip of the inclined pillar 3 (3') erected diagonally with the peripheral line 4. However, in this embodiment, the suspension wire 18 pulled down from the tip of the support column 12b bears the tension to support the shelf surface 11. By assembling the beam 13 to the column 12 erected in the vertical direction instead of the inclined column 3 (3'), the framework of the fruit shelf 10 can be constructed, and the inclined column 3 (3) as in the above conventional example. There is no need for trouble such as adjusting the angle of'). Further, by extending the suspension wire 18 from the tip of the support column 12b to the shelf surface 11, the shelf surface 11 can be supported by the tension in the diagonally upward direction, so that the peripheral lines 4 and the tension wires 7a and 7b of the above-mentioned conventional example can be supported. As compared with the case where the shelf surface 2 is supported only by the tension in the horizontal direction, the tension can be easily adjusted. Further, since the columns 12a at the four corners are reinforced by the brace 20, the anchors 6 and the like buried in the ground as in the conventional example are unnecessary.

As described above, the fruit tree shelf 10 of the present embodiment does not require a process that requires high technology like the conventional fruit tree shelf 1 and does not require much skill in installation, so that the construction period for installation is shortened. It is possible to reduce labor costs and reduce construction costs. Moreover, the main components such as the columns 12 and the beams 13 are composed of general metal pipes 15, which require special members such as the inclined columns 3 (3') used in the above conventional example. do not do. The fruit tree shelf 10 of this embodiment can be installed using easily available materials.

In addition, the fruit tree shelf 10 of this embodiment has high flexibility regarding the height and shape of the shelf surface 11. In the case of the above conventional example, the height of the shelf surface 2 is determined by the angle and depth at which the inclined pillar 3 (3') is embedded. Therefore, after the fruit tree shelf 1 is installed, the height of the shelf surface 2 is determined. It was very difficult to change after the fact. On the other hand, in the case of this embodiment, the height of the shelf surface 2 can be adjusted relatively easily by shifting the position of the beam 13 with respect to the support column 12.

In addition, the field of fruit trees is often set up on a slope such as an alluvial fan, and in that case, it is naturally preferable to arrange the shelf surface 11 diagonally along the slope. Moreover, the field is not necessarily rectangular as illustrated in FIG. 1 in a plan view, and may have various shapes. In such a case, in the fruit tree shelf 1 of the type in which the inclined pillar 3 (3') is fixed by the peripheral line 4 and tension is applied as in the above conventional example, each inclined pillar 3 (3'), the peripheral line 4, and the tension wire 7a , 7b can be assumed to be in a situation where it is difficult to evenly apply tension. In this respect, in this embodiment, since the beam 13 itself does not load the columns 12 in the horizontal direction, when connecting the beams 13 to each column 12, the connection position is appropriately adjusted according to the angle and shape of the field. The framework of the shelf surface 11 can be easily configured into various shapes simply by assembling while changing. Then, if the tension wire 16 is stretched over the beam 13 and then the suspension wire 18 is stretched from the support column 12b, tension can be applied substantially evenly to the shelf surface 11 having such a deformed shape.

At this time, in this embodiment, since the support column 12 and the beam 13 made of the metal pipe 15 are connected by the connecting tool 14 as described above, the connection angle between the columns 12 and the pipes 15 forming the beam 13 is connected. Can be adjusted freely. Therefore, it is possible to easily perform operations such as changing the height of the beam 13 with respect to the support column 12 and adjusting the orientation.

The configuration of the connecting tool 14 as shown in FIG. 4 is only an example, and various structures used for connecting the pipes 15 to each other can be adopted. Any configuration may be used as long as the pipes 15 can be suitably connected to each other. For example, the pipes 15 may be directly connected to each other with bolts or the like, or the pipes 15 may be tied to each other using a wire or the like. it can. However, from the viewpoint of workability, it is considered that it is particularly convenient and suitable to connect using the connecting tool 14 as described above.

As described above, the fruit tree shelf 10 of the present embodiment has a support column 12 erected in the field, a beam 13 connected to a predetermined height of the support column 12, and a tension wire 16 stretched over the beam 13. The shelf surface 11 is formed by the beam 13 and the tension wire 16, and at least a part of the columns 12 (posts 12b) protrudes above the shelf surface 11 and protrudes above the shelf surface 11. Since the suspension wire 18 is stretched from the formed portion to the surrounding beam 13 or the tension wire 16 to support the beam 13 or the tension wire 16, the fruit shelf 10 can be easily used without going through a complicated and skillful process. Can be installed. Further, it is relatively easy to set the height of the shelf surface 11 and to form the shelf surface 11 corresponding to various terrains.

Further, in the present embodiment, the tip of the support column 12 is formed so as to cover the shaft portion 17a that fits with the support column 12 and one end of the shaft portion 17a and extend outward in the radial direction of the shaft portion 17a. Since the umbrella portion 17b and the cap 17 having a hole 17c that opens in the umbrella portion 17b are arranged, the suspension wire 18 can be easily stretched by winding the end portion of the suspension wire 18 around the hole 17c. ..

Further, in the present embodiment, the brace 20 is formed between the connecting portion between the support column 12a located at the corner and the beam 13 and the vicinity of the ground of the support column 12a adjacent to the support column 12a located at the corner. Since they are connected by (20a), the columns 12a located at the corners can be reinforced against the force of collapsing in the direction of the adjacent columns 12a.

Further, in the present embodiment, among the columns 12, the connecting portion between the columns 12a located at the corner and the beam 13 and the connecting portion between the columns 12b located inside the outer circumference of the shelf surface 11 and the beam 13 in the vicinity thereof. Since they are connected to each other by a brace 20 (20b), it is possible to prevent the support 12a from collapsing against the force of pulling the support 12a located at the corner inward of the shelf surface 11.

Further, in the present embodiment, the columns 12 and the beams 13 are pipes 15, and the pipes 15 are connected to each other by a connecting tool 14 provided with a clamp portion 14a for sandwiching the pipes 15, so that the beams to the columns 12 are connected to each other. Work such as changing the height of 13 and adjusting the orientation can be easily performed.

Further, in the present embodiment, since the support line 19 between the columns is stretched between the tips of the columns 12, the columns 12 support each other through the tension of the branch line 19 between the columns. , A bird net, a rain shelter house, etc. can be installed on the branch line 19 between columns.

Further, in the present embodiment, since the upper and lower branch lines 21 are stretched between the tip of the support column 12 and the connecting portion between the support column 12 and the beam 13, the downward displacement of the beam 13 is prevented. be able to.

Therefore, according to the fruit tree shelf of the present embodiment and the installation method thereof, the shelf surface can be suitably formed with a simple structure.

It should be noted that the fruit tree shelf of the present invention and its installation method are not limited to the above-described examples, and it goes without saying that various changes can be made without departing from the gist of the present invention.

10 Fruit tree shelf 11 Shelf surface 12 Strut 12a Strut 12b Strut 13 Beam 14 Connector 14a Clamp part 15 Pipe 16 Stretch wire 17 Cap 17a Shaft part 17b Umbrella part 17c Hole 18 Suspension line 19 Strut brace 20a Brace 20a

Claims (7)

A strut erected in a field, a beam connected to a predetermined height of the strut, and a tension wire stretched over the beam are provided, and a shelf surface is formed by the beam and the tension wire.
At least a part of the columns protrudes above the shelf surface, and a suspension wire is extended from the portion protruding above the shelf surface to the surrounding beam or tension wire to support the beam or tension wire. Configured to
Fruit shelves characterized the tip of the strut, that the vertical inter-branch and halide during the connecting portion between the strut and the beam. At the tip of the support column, a shaft portion that fits the support column, an umbrella portion that covers one end of the shaft portion and is formed so as to extend radially outward of the shaft portion, and a hole that opens in the umbrella portion. The fruit tree shelf according to claim 1, wherein a cap is provided. Among the columns, claim 1 or 2 is characterized in that the connecting portion between the column located at the corner and the beam and the vicinity of the ground of the column adjacent to the column located at the corner are connected by a brace. The fruit shelves listed in. Among the columns, the connecting portion between the column and the beam located at the corner and the connecting portion between the column and the beam located inside the outer circumference of the shelf surface in the vicinity thereof are connected by a brace. The fruit tree shelf according to any one of claims 1 to 3. The fruit shelf according to any one of claims 1 to 4, wherein the support column and the beam are pipes, and the pipes are connected to each other by a connecting tool provided with a clamp portion for sandwiching the pipes. .. The fruit tree shelf according to any one of claims 1 to 5, wherein a branch line between the columns is stretched between the tips of the columns. A strut is erected in the field, a beam is connected to a predetermined height of the strut, a tension wire is stretched over the beam to form a shelf surface by the beam and the tension wire, and the shelf surface is projected at a position higher than the shelf surface. A suspension wire is stretched from the provided column to the surrounding beam or the tension wire to support the beam or the tension wire, and a vertical branch line is provided between the tip of the column and the connecting portion between the column and the beam. A method of installing fruit shelves, which is characterized by stretching the beams .

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