Post assemblies, anti-feeder tubes and animal-proof fences

Abstract

To provide a pillar assembly that can be prevented from breaking due to snow accumulation, a tube against damage caused by wild animals, and a fence against wild animals.SOLUTION: A pillar assembly is used for a tube against damage caused by wild animals or a fence against wild animals. The pillar assembly comprises a rod bundle comprising rods of 2 mm or more and 6 mm or less in diameter, and a binding and fixing portion that comprises an end binding and fixing portion for binding and fixing both ends of the rod bundle in the lengthwise direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a support assembly for a feeding prevention tube and an animal prevention fence, and to a feeding prevention tube and an animal prevention fence that include this support assembly. [Background technology]

[0002] BACKGROUND ART Various proposals have been made so far to protect young trees such as planted seedlings or young tree saplings from damage such as feeding by wild animals.

[0003] For example, Patent Document 1 discloses that in order to protect young trees, a cylindrical covering and protection material for seedlings made of polyester or polyolefin fiber cloth or nonwoven fabric sewn, fused, or glued is fixed in a straight line from the base to the tip of the cylinder with a support, and the young trees are covered with the covering and protection material.

[0004] Patent Document 2 discloses a bird and animal prevention fence for preventing damage caused by birds and animals, which comprises multiple cylindrical posts made of metal pipes or the like, upper locking fittings that engage with the upper ends of the posts, lower locking fittings that clamp and lock the lower parts of the posts, and a resin net that is stretched between the posts by locking its upper and lower ends to the upper and lower locking fittings.

[0005] In this bird and animal prevention fence, during the winter, the lower rope located at the bottom of the net is also fastened to the upper fastening fitting, keeping the net folded midway between the top and bottom, preventing damage to the net from accumulated snow. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-190165 [Patent Document 2] Japanese Patent Application Laid-Open No. 2011-239712 Summary of the Invention [Problem to be solved by the invention]

[0007] However, Patent Documents 1 and 2 have the following problems.

[0008] Patent Document 1 states that in areas where wet snow or coarse frost snow accumulates, the weight of the snow and the settling pressure when it melts can cause the supports used in individual tree protection materials to break, raising concerns that planted trees may be eaten by wild animals.

[0009] In Patent Document 2, due to various factors such as an increase in remote afforestation areas and a decrease in the number of forestry workers, it is currently not realistic to fold the net in the middle at the top and bottom during the winter and then return it to its original state at the end of the winter season.

[0010] The present invention has been made in consideration of the above circumstances, and aims to provide a support assembly for a feeding prevention tube and an animal-proof fence that can prevent breakage due to snow accumulation, as well as a feeding prevention tube and an animal-proof fence. [Means for solving the problem]

[0011] The first aspect of the support assembly for a feeding prevention tube or animal-proof fence comprises a rod bundle made up of multiple rod materials having a diameter of 2 mm or more and 6 mm or less, and a bundling and fixing portion that ties and fixes both longitudinal ends of the rod bundle.

[0012] In the strut assembly of the second embodiment, the rods constituting the rod bundle all have the same diameter.

[0013] In the strut assembly of the third embodiment, the plurality of rods constituting the rod bundle include at least one rod having a different diameter.

[0014] In the fourth aspect of the support assembly, the material of the rod material is a fiber-reinforced thermosetting resin containing reinforcing fibers, or a fiber-reinforced thermoplastic It is a resin.

[0015] In the strut assembly of the fifth embodiment, the reinforcing fibers are any of glass fibers, carbon fibers, steel fibers, aramid fibers, and other organic fibers.

[0016] In the sixth embodiment of the strut assembly, the matrix resin of the fiber-reinforced thermosetting resin is made of unsaturated polyester resin and vinyl ester resin, and the mass ratio of the unsaturated polyester resin to the vinyl ester resin is 20:80 to 70:30.

[0017] The strut assembly of the seventh embodiment includes at least one additional bundling and fixing portion for bundling and fixing the rod bundle between bundling and fixing portions for bundling and fixing the ends of the rod bundle.

[0018] In the strut assembly of the eighth aspect, the fastener is an adhesive, a thermoplastic resin, a thermosetting resin, a fastener, or a combination thereof.

[0019] A ninth aspect of the feeding prevention tube to be attached to young trees growing on the ground comprises the above-mentioned support assembly, a net member including a tubular covering portion that covers the young tree, and a tubular insertion portion that protrudes inward from the covering portion and extends along the longitudinal direction of the covering portion and through which the support assembly can be inserted, and a fastener that secures the support assembly inserted into the insertion portion to the net member.

[0020] The tenth aspect of the animal-proof fence for preventing the intrusion of wild animals comprises a plurality of the above-mentioned support assemblies, a net member arranged between the plurality of support assemblies, and fasteners for securing the plurality of support assemblies and the net member. [Effects of the Invention]

[0021] The support assembly, anti-feeder tube, and anti-animal fence of the present invention can prevent breakage due to snow accumulation. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is a diagram illustrating the structure of the support column assembly. [Figure 2] FIG. 2 is a diagram for explaining the operation of the support column assembly. [Figure 3] FIG. 3 is a diagram for explaining the operation of the support column assembly. [Figure 4] FIG. 4 is a perspective view showing the state in which the feeding damage prevention tube is attached to a young tree. [Figure 5] 5 is a cross-sectional view of the feeding damage prevention tube shown in FIG. 4 taken along the cutting line VV. [Figure 6] FIG. 6 is a diagram for explaining the structure of the animal-proof fence. DETAILED DESCRIPTION OF THE INVENTION

[0023] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

[0024] <Background of the invention> In the past, the main countermeasures to prevent damage caused by wild animals such as Japanese deer and Japanese serow have been to spray chemicals called repellents on seedlings or to surround afforestation areas with fiber fences. These countermeasures are most effective when sprayed regularly and patrolled, but as the number of forestry workers decreases and afforestation areas move further into the countryside, their effectiveness has declined as maintenance costs have become more expensive.

[0025] Therefore, a method of protecting individual planted trees using single-tree protection materials (predator-proof tubes) consisting of netting and supports has been widely used, although it has a high initial cost, as the running costs for maintenance are low.

[0026] There are two types of posts: hard, molded resin posts and soft, fiber-made posts. The hard type is often made of resin-coated steel pipes with a diameter of about 20 mm, while the soft type is made of FRP with a diameter of about 8 mm. In forest areas, the transportability of materials is also important, so it is desirable to use lightweight, highly flexible FRP posts for single-tree protection materials. However, because the main body of the soft type is molded resin, it is difficult to maintain an upright shape with flexible FRP posts, making them unusable.

[0027] Animal-proof fences are the most common animal-proofing material, and consist of posts driven into the ground at 3-4m intervals around the perimeter of the planted area, with a fiber netting placed around the inside. The main components are a mesh of 50mm-150mm, posts made of resin-coated steel pipe or FRP with a diameter of around 20mm-40mm, and ABS stakes. In terms of material costs, resin-coated steel pipes are superior for the posts, but FRP posts are superior in terms of durability and transportability.

[0028] In areas where wet snow or coarse frost snow accumulates, the weight of the snow and the settling pressure during snowmelt can cause the posts used in animal-proof fences and feeding prevention tubes to break, resulting in planted trees being eaten by wild animals. It has been found that this post breakage often occurs at the base, about 10 to 30 cm from the ground. In addition to changing the diameter of the post and the ratio of resin and glass fiber blends, external reinforcement was also tried, including adding short posts with a total length of 1.0 m to the base, burying iron pipes about 40 cm in length and inserting the posts into them, and reinforcing the base about 30 cm from the ground with rubber hose, but breakage always occurred with each method.

[0029] It is possible to increase the rigidity of the poles by making them thicker in diameter, but when used in reforestation areas, the materials must be transported by hand, and special equipment is required to drive in thicker poles. Even if snow resistance could be overcome, it would be significantly less portable and convenient, so making the diameter thicker is not realistic. On the other hand, it is thought that the force of snow could be deflected by making the poles thinner in diameter and less rigid, but there are concerns that the reduced stability of the poles could have a negative impact on the growth of planted trees, such as bending.

[0030] Snow-resistant posts are also highly desired for animal-proof fences, just like feeding tubes. Especially in the case of animal-proof fences, snow sticks to the surface of the net, placing a large weight on the posts, often causing them to break. To prevent breakage, posts with increased rigidity are available, but breakage of posts, especially due to wet snow, still occurs.

[0031] The most common method to prevent poles from breaking due to snow is to remove the net from the pole before it snows and then reattach it to the pole after the snow melts, a process known as "snow removal." However, due to various factors such as the increase in remote afforestation areas and the decrease in the number of forestry workers, "snow removal" is currently unrealistic.

[0032] The inventors then conducted extensive research into the supports used in anti-pest tubes and animal-proof fences, and as a result came up with the invention of a support assembly that reduces rigidity while maintaining self-supporting properties, thereby mitigating local bending due to the weight of snow and preventing breakage.

[0033] <Support Assembly> A support assembly for a feeding prevention tube or an animal-proof fence will be described with reference to the drawings. Fig. 1 is a diagram for explaining the structure of a support assembly 1.

[0034] 101A in Fig. 1 is a perspective view of a rod bundle 12 that constitutes the strut assembly 1 (see 101C). The rod bundle 12 shown in 101A is made up of seven rod materials 10. The rod bundle 12 can be made up of a minimum of two rod materials 10 and a maximum of ten rod materials 10.

[0035] The length L of the rod bundle 12 is preferably 180 cm or more and 210 cm or less. By making the length L 180 cm or more, even when buried 40 cm underground, a surface length of 140 cm can be ensured, and by making the length L 210 cm or less, even when buried 40 cm underground, a surface length of 170 cm can be ensured.

[0036] The material of the rod material 10 is preferably a fiber reinforced thermosetting resin (FRP) containing reinforcing fibers or a fiber reinforced thermoplastic resin (FRTP) containing reinforcing fibers. The reinforcing fibers contained in the fiber reinforced thermosetting resin and the fiber reinforced thermoplastic resin may be inorganic fibers such as glass fibers, carbon fibers, and steel fibers, or organic fibers such as aramid fibers and other organic fibers.

[0037] The matrix resin contained in the fiber reinforced thermosetting resin (FRP) may be an unsaturated polyester resin, a vinyl ester resin, an epoxy resin, a phenolic resin, or the like.

[0038] Among the above matrix resins, a blend of two types of resins, an unsaturated polyester resin and a vinyl ester resin, is preferred, and the mass ratio of the unsaturated polyester resin to the vinyl ester resin is preferably 20:80 to 70:30. By adopting such a configuration, the matrix resin of the rod material 10 can have flexibility to flexibly respond to bending stress, and can also be made inexpensively.

[0039] The matrix resin contained in the fiber reinforced thermoplastic resin (FRTP) can be polyethylene resin, polypropylene resin, polyvinyl chloride resin, ABS resin, etc. Among the above matrix resins, polyethylene resin and ABS resin are preferred.

[0040] 101B in FIG. 1 is a cross-sectional view of the rod bundle 12 taken along the cutting line II. As shown in 101B, the rod bundle 12 is composed of seven rod materials 10. The diameter D of each rod material 10 is within a range of 2 mm to 6 mm. In 101B, the multiple (seven) rod materials 10 constituting the rod bundle 12 have the same diameter D.

[0041] However, the plurality of rod materials 10 do not have to have the same diameter D, and the plurality of rod materials 10 may include at least one rod material 10 with a different diameter, for example, a combination of rod materials with different diameters D.

[0042] The combination of different diameters D may be such that the diameters D of the multiple rods 10 are all different. The multiple rods 10 may also be composed of a group of several rods 10 having a certain diameter D and a group of several rods 10 having a different diameter D. However, the diameters D of the multiple rods 10 are not limited to these.

[0043] 101C in Fig. 1 is an overall view of the strut assembly 1. As shown in 101C, the strut assembly 1 includes a rod bundle 12 and a bundling and fixing portion 14 that bundling and fixing both ends of the rod bundle 12 in the longitudinal direction.

[0044] The fastening portion 14 can be made of an adhesive, a thermoplastic resin, a thermosetting resin, a fastener, or a combination thereof.

[0045] The bundling and fixing portion 14 of the support assembly 1 of 101C is made up of a cap-shaped fixing device made of metal, plastic, or various other materials. The cap-shaped fixing device is attached to the end of the rod bundle 12.

[0046] Epoxy adhesive, acrylic adhesive, etc. can be used as the adhesive for the binding and fixing portion 14. Polyethylene resin, ABS resin, etc. can be used as the thermoplastic resin, and unsaturated polyester resin, vinyl ester resin, etc. can be used as the thermosetting resin.

[0047] The bundle length L1 of the bundled portion of the rod bundle 12 bundled and fixed by the bundling fixing part 14 is preferably 5 cm or more and 20 cm or less. In addition, the ratio of the bundle length L1 to the length L of the rod bundle 10 is preferably 1:21 to 1:5.25.

[0048] The bundling and fixing portions 14 are provided at at least two locations on both ends in the longitudinal direction of the rod bundle 12, and at least one additional bundling and fixing portion (not shown) can be provided between the bundling and fixing portions 14 on both ends. Including the bundling and fixing portions 14 on both ends, the rod bundle 12 can be provided with bundling and fixing portions 14 at up to 10 locations.

[0049] <Operation of the support assembly> According to the support assembly 1, rod material 10 having a diameter of 2 mm or more and 6 mm or less is made into a rod bundle 12, and at least two points at both ends of the rod bundle 12 in the longitudinal direction are bound and fixed with binding and fixing portions 14. This allows the support assembly 1 to maintain its independence while ensuring freedom of deformation of the local cross-sectional shape when bending due to the load of snow, thereby reducing breakage.

[0050] The operation of the support assembly 1 will be described with reference to FIGS. 2 and 3, taking a rod bundle 12 made up of seven rods 10 as an example.

[0051] FIG. 2 shows the change in the cross-sectional shape of the rod bundle 12 of the support assembly 1 after construction, from when it is left at rest to when it is slightly deformed.

[0052] 2 is a general view of the strut assembly 1 when placed at rest, and 102B of Fig. 2 is a cross-sectional view of the rod bundle 12 when the strut assembly 1 is placed at rest, as viewed from the cutting line II-II. As shown in 102A and 102B of Fig. 2, when the strut assembly 1 is in a vertical state with no load applied, the cross-sectional shape of the rod bundle 12 is such that adjacent rods 10 are in contact with each other. Note that the cross-sectional shape of 102B of Fig. 2 basically matches the cross-sectional shape (not shown) of the portion (bundled portion) of the rod bundle 12 that is bundled and fixed by the bundling and fixing portion 14.

[0053] 2 is a general view of the strut assembly 1 in a slightly deformed state when an external force (load) is applied, and 102D of Fig. 2 is a cross-sectional view of the rod bundle 12 of the strut assembly 1 in a slightly deformed state, taken along the section line III-III. As shown in Fig. 2, 102C and 102D, in response to bending displacement, the portions not bound by the binding and fastening portions 14 (unbound portions) undergo slight deformation in cross-sectional shape, gradually decreasing in buckling strength and bending rigidity from those at rest. Comparing 102B and 102D of Fig. 2, small changes can be seen in the arrangement of the rods 10.

[0054] On the other hand, when the strut assembly 1 is left at rest and then slightly deformed, the cross-sectional shape (not shown) of the bundled portion of the rod bundle 12 does not change.

[0055] FIG. 3 shows the change in the cross-sectional shape of the rod bundle 12 of the support assembly 1 after construction, from small deformation to large deformation.

[0056] 3 are the same as 102C and 102D in Fig. 2, and show a small deformation state when an external force is applied to the support column assembly 1. A description of 103A and 103B in Fig. 3 will be omitted.

[0057] 103C in FIG. 3 is an overall view of the support assembly 1 in a state of large deformation when further external force is applied, and 103D in FIG. 3 is a cross-sectional view of the rod bundle 12 in the state of large deformation of the support assembly 1 as seen from the cutting line IV-IV.

[0058] The bending characteristics of the strut assembly 1 from small deformation to large deformation change as the rod bundle 12 moves in a generally regular manner, starting from near the center of the unbound portion, in response to external forces in order to achieve a uniform curvature, as shown in 103D of Figure 3, in order to seek a stable cross-sectional arrangement.

[0059] As a result, when viewed from a direction perpendicular to the input of the bending load, the cross-sectional shape deforms to mimic a thinning of the wall. At the end of the deformation, the rods 10 constituting the rod bundle 12 are arranged in a shape close to a straight line, as shown by 103D in Fig. 3, which alleviates the local bending that occurs in each rod 10 and prevents the rod bundle 12 from breaking.

[0060] When the strut assembly 1 is deformed slightly to greatly, the cross-sectional shape (not shown) of the bundled portion of the rod bundle 12 does not change.

[0061] Although the cross-sectional shapes of the rod bundle 12 are illustrated in Figures 2 and 3, it is understood that these cross-sectional shapes are not limited to these and that the cross-sectional shape of the rod bundle 12 can change depending on the external force applied to the support assembly 1.

[0062] The rod bundle 12 of the support assembly 1 is made up of a plurality of rods 10 bound and fixed at both ends by binding and fixing portions 14, so that it can also be made to stand on its own.

[0063] <Food damage prevention tube> Next, we will explain the feeding damage prevention tube equipped with the support assembly 1. Figure 4 is a perspective view showing the feeding damage prevention tube attached to a young tree.

[0064] As shown in FIG. 4, the feeding prevention tube 30 includes a support assembly 1, a net member 32, and a fastener 50.

[0065] The net member 32 is made of a synthetic fiber fabric and includes a tubular covering portion 33 and a tubular insertion portion 34 that protrudes inward from the covering portion 33, extends along the longitudinal direction of the covering portion 33, and through which the support assembly 1 can be inserted. The feeding damage prevention tube 30 is attached to the young tree 36 by driving the support assembly 1, inserted into the insertion portion 34, into the ground 35, with the covering portion 33 of the net member 32 covering the young tree 36 growing on the ground 35. As described above, the support assembly 1 includes the rod bundle 12 including a plurality of rod materials 10, and the bundling and fixing portions 14 that bundling and fixing both ends of the rod bundle 12.

[0066] Examples of synthetic fibers that can be used for the net member 32 include polylactic acid fiber under the trade name "Ecodia" (registered trademark) manufactured by Toray Industries, Inc., and highly weather-resistant polypropylene. Ecodia, a polylactic acid fiber, is a biodegradable fiber that is completely consumed by microorganisms after a durable period has passed and turns into natural by-products such as carbon dioxide, methane, water, and biomass, preventing any adverse impact on the natural environment.

[0067] Fig. 5 is a cross-sectional view of the feeding damage prevention tube 30 shown in Fig. 4, taken along the cutting line VV. As shown in Fig. 5, the net member 32 is used in a state in which the first tubular portion 40, which is the covering portion 33, and the second tubular portion 41, which is the insertion portion 34, are double-woven (tubularly woven) from synthetic fiber fabric, and the first tubular portion 40 is turned inside out, so that the insertion portion 34 protrudes inward from the covering portion 33 and extends along the longitudinal direction of the covering portion 33.

[0068] The net member 32 has a first ear 42 woven by single weave in the longitudinal direction of the first tubular portion 40 on one side of the first tubular portion 40 for realizing the covering portion 33, and a second ear 43 woven by single weave in the longitudinal direction of the first tubular portion 40 on the other side of the first tubular portion 40. Furthermore, a second tubular portion 41 for realizing the insertion portion 34 is woven parallel to the first tubular portion 40 at the middle of the first ear 42. Both sides of the first tubular portion 40 are reinforced in the longitudinal direction of the first tubular portion 40 by the single woven first ear 42 and second ear 43, and both sides of the second tubular portion 41 are reinforced in the longitudinal direction of the second tubular portion 41 by the single woven first ear 42. Furthermore, by inserting the pole assembly 1 into the insertion portion 34, the net member 32, which is made up of the insertion portion 34 and the cover portion 33, can be made into a tubular shape that extends along the pole assembly 1. This reduces the number of parts of the feeding prevention tube 30 and makes on-site assembly easier.

[0069] Furthermore, with the covering part 33 covering the young tree 36 planted on the ground 35, the pest damage prevention tube 30 can be easily attached to the young tree 36 planted on the ground 35 by simply inserting the support assembly 1 into the insertion part 34 and driving the lower end of the support assembly 1 into the ground 35.

[0070] 4, it is preferable to fix the net member 32 to the support assembly 1 with a fastener 50 so that the net member 32 does not slip out of the support assembly 1. The fastener 50 is an elastically deformable member having a C-shaped cross section.

[0071] In FIG. 4, the net member 32 and the pole assembly 1 are fixed by two fasteners 50. The upper fastener 50 secures the inserting portion 34 (second cylindrical portion 41) and the pole assembly 1 from the inside of the cover portion 33 (first cylindrical portion 40) by sandwiching them in a direction perpendicular to the pole assembly 1. The lower fastener 50 secures the cover portion 33 (first cylindrical portion 40), the inserting portion 34 (second cylindrical portion 41), and the pole assembly 1 from the outside of the cover portion 33 (first cylindrical portion 40) by sandwiching them in a direction perpendicular to the pole assembly 1. The upper fastener 50 is attached within a range of 0 cm to 20 cm from the top (opening) of the cover portion 33. The upper fastener 50 is attached, for example, at a position approximately 15 cm from the top. The lower fastener 50 is attached within a range of 0 cm to 10 cm from the ground. The lower fastener 50 is attached, for example, at a position about 5 cm from the ground. By sandwiching the pole assembly 1 in different directions between the upper fastener 50 and the lower fastener 50, the durability of the fastener 50 against winds coming from various directions, both left and right, is improved.

[0072] 4 illustrates an example in which two fasteners 50 are used, but the number of fasteners 50 is not limited to two. For example, the net member 32 and the support pole assembly 1 may be fixed together using only the upper fastener 50.

[0073] The diameter and length of the covering portion 33 of the net member 32 are, for example, 25 cm x 170 cm. If the diameter of the covering portion 33 is 25 cm, it can be attached to a young tree 36 whose width in the diameter direction is approximately 30 cm or less without interfering with the growth of the young tree 36. Note that the covering portion 33 is not limited to being attached in a cylindrical shape. For example, it may be attached in the shape of a cylinder with an oval cross section that follows the direction of the branches of the young tree 36.

[0074] For example, if the length of the support assembly 1 is 210 cm and it is driven into the ground 35 by about 40 cm, and the length of the net member 32 is 170 cm, it is preferable that the length of the support assembly 1 protruding upward from the opening of the net member 32 be less than 10 cm.

[0075] Furthermore, if the length of the support assembly 1 is 210 cm and is driven into the ground 35 by about 40 cm, and the length of the net member 32 is 140 cm, it is preferable that the length of the support assembly 1 protruding upward from the opening of the net member 32 be less than 30 cm.

[0076] The support assembly 1 ensures a degree of freedom of deformation of the local cross-sectional shape when bent, so even if a bending load is applied to the support assembly 1 due to the weight of snow accumulated on the cover portion 33 or strong winds, the support assembly 1 can be prevented from breaking due to the bending load. When the snow accumulated on the cover portion 33 melts and the load on the cover portion 33 is released, the support assembly 1 returns to the shape it had before the load was applied. If the rod material 10 constituting the rod bundle 12 of the support assembly 1 is made of FRP, it is lightweight and easy to carry.

[0077] The lower end of the covering portion 33 is driven into the ground 35 where young trees 36 are growing by a stake 60. The stake 60 can be made using a long, thin piece of bamboo. The tip 61 of the stake 60 in the driving direction is formed at an acute angle to reduce the resistance that the stake 60 receives from the ground 35 when being driven. A side portion 62 of the stake 60 that is perpendicular to the driving direction is formed with an engagement portion 63 that engages the covering portion 33 to the stake 60. The engagement portion 63 is, for example, a groove portion formed in the side portion 62.

[0078] The net member 32 includes stakes 60 that secure the lower end of the covering portion 33 to the ground 35, so that the lower end of the covering portion 33 can be secured to the ground 35 without any gap between the lower end of the covering portion 33 and the ground 35 on which the young trees 36 are growing. This prevents the net member 32 from being blown away by the wind and slipping out of the support assembly 1. It also prevents pests from lifting up the lower end of the covering portion 33 and damaging the net member 32.

[0079] <Animal fence> Next, a description will be given of an animal-proof fence including the support pole assembly 1. Figure 6 is a diagram for explaining the structure of the animal-proof fence, in which 106A is a partial front view of the animal-proof fence and 106B is a side view.

[0080] As shown in 106A of Figure 6, the animal-proof fence 80 includes a plurality of support assemblies 1, a net member 81 arranged between the plurality of support assemblies 1, and fasteners 82 that secure the plurality of support assemblies 1 and the net member 81.

[0081] The length (vertical direction) x width of the net member 81 is, for example, 2.6 m x 48 m per roll. The net member 81 is primarily made of polyethylene fiber, with ultra-high molecular weight polyethylene fiber (IZANAS: a registered trademark of Toyobo) or stainless steel wire inserted for reinforcement. It is made of Russell netting, knotted netting, or knotless netting. The Russell netting method improves shock absorption against animal collisions, falling rocks, etc. The use of knotted or knotless netting allows for the manufacture of a low-cost, highly versatile net. The mesh size of the net member 81 is, for example, 70 mm, and preferably 50 mm to 200 mm. The net member 81 may have a different color every 1 m in the width direction. This allows the installation distance to be determined from a distance. In Figure 6, the color differences every 1 m are represented by different mesh thicknesses of the net material 81. Actual net members 81 are generally made of mesh of the same thickness.

[0082] The plurality of support assemblies 1 are driven into the ground 35 at intervals of, for example, 3 m. The length of the support assembly 1 is 270 cm, and the support assembly 1 is driven about 40 cm into the ground 35. As described above, the support assembly 1 comprises a rod bundle 12 comprising a plurality of rod materials 10, and bundling and fixing parts 14 that bundling and fixing both ends of the rod bundle 12.

[0083] The multiple support assemblies 1 and the net member 81 are fixed with fasteners 82. The fasteners 82 are, for example, repair threads for fixing, and are provided at three locations on each support assembly 1 at 50 cm intervals. The support assembly 1 and the net member 81 are fixed by tying a round knot with the repair threads for fixing. When fixing the support assembly 1 and the net member 81, it is preferable to sag the net member 81. This ensures the impact resistance of the net member 81 against falling rocks, accumulations of earth and sand, and attacks from wild animals.

[0084] 6, in order to prevent small animals from entering from the ground, the net member 81 is fixed to the pole assembly 1 so that its lower end extends about 60 cm (length L2) from the pole assembly 1 along the ground 35, i.e., so that a hanging portion is formed. With the net member 81 as a reference, the side to which the pole assembly 1 is attached is the area to be protected from wild animals.

[0085] As shown by 106A and 106B in Fig. 6, the lower end of the net member 81 (the lower end of the hanging portion) is fixed to the ground 35 by anchor piles 83. Two anchor piles 83 are driven between adjacent support assemblies 1. The number of anchor piles 83, the positions at which they are driven, etc. are not limited to those shown in Fig. 6 and can be changed as appropriate.

[0086] As shown in 106A and 106B of FIG. 6, the pole support ropes 84 are attached to the top of the pole assembly 1. The pole support ropes 84 support the pole assembly 1 to prevent it from falling over. The pole support ropes 84 extend in two directions, and the ends of the pole support ropes 84 are fixed to the ground 35 by anchor piles 83. As shown in 106B of FIG. 6, the pole support ropes 84 are stretched in opposite directions (two directions) with the net member 81 in between. The pole support ropes 84 have, for example, a diameter of 8 mm and a length of 9 m. The pole support ropes 84 are attached to the pole assembly 1, for example, by a wrap knot. The pole support ropes 84 can be attached to the pole assembly 1 individually or in groups of multiple ropes.

[0087] The support assembly 1 ensures a degree of freedom of deformation of the local cross-sectional shape when bent, so even if a bending load is applied to the support assembly 1 due to the weight of snow accumulated on the net member 81 or strong winds, the support assembly 1 can be prevented from breaking due to the bending load. When the snow accumulated on the net member 81 melts and the load on the net member 81 is released, the support assembly 1 returns to the shape it had before the load was applied. If the rod materials 10 constituting the rod bundle 12 of the support assembly 1 are FRP, they are lightweight and easy to carry. [Explanation of symbols]

[0088] 1...support assembly, 10...rod material, 12...rod bundle, 14...binding and fixing portion, 30...predator-proof tube, 32...net member, 33...covering portion, 34...insertion portion, 35...ground, 36...young tree, 40...first tubular portion, 41...second tubular portion, 42...first ear portion, 43...second ear portion, 50...fastener, 60...stake, 61...direction tip portion, 62...side portion, 63...engagement portion, 80...animal-proof fence, 81...net member, 82...fastener, 83...anchor stake, 84...support support rope

Claims

1. A support assembly for a feeding tube or animal-proof fence, comprising: a rod bundle composed of a plurality of rod materials each having a diameter of 2 mm or more and 6 mm or less; a bundling and fixing portion for bundling and fixing both ends of the rod bundle in the longitudinal direction; Equipped with The material of the rod material is a fiber-reinforced thermosetting resin containing reinforcing fibers or a fiber-reinforced thermoplastic resin containing reinforcing fibers. Support assembly.

2. The plurality of rod materials constituting the rod bundle all have the same diameter. The strut assembly of claim 1 .

3. The plurality of rods constituting the rod bundle include at least one rod having a different diameter. The strut assembly of claim 1 .

4. The reinforcing fibers are any of glass fibers, carbon fibers, steel fibers, aramid fibers, and other organic fibers. A strut assembly according to any one of claims 1 to 3.

5. the matrix resin of the fiber-reinforced thermosetting resin is composed of an unsaturated polyester resin and a vinyl ester resin, and the mass ratio of the unsaturated polyester resin to the vinyl ester resin is 20:80 to 70:30; A strut assembly according to any one of claims 1 to 4.

6. and at least one or more additional bundling and fixing portions for bundling and fixing the rod bundle between the bundling and fixing portions for bundling and fixing the end portions of the rod bundle. A strut assembly according to any one of claims 1 to 5.

7. The binding and fixing portion is an adhesive, a thermoplastic resin, a thermosetting resin, a fixing tool, or a combination thereof. A strut assembly according to any one of claims 1 to 6.

8. A feeding prevention tube attached to a young tree growing on the ground, A strut assembly according to any one of claims 1 to 7; a net member including a tubular covering portion that covers the young tree, and a tubular insertion portion that protrudes inward from the covering portion and extends along the longitudinal direction of the covering portion, and through which the support assembly can be inserted; a fastener for fastening the support pole assembly and the net member inserted through the insertion portion; A feeding prevention tube.

9. An animal-proof fence that prevents the intrusion of wild animals, A plurality of strut assemblies according to any one of claims 1 to 7; a net member disposed between the plurality of support assemblies; and fasteners for securing the plurality of support pole assemblies and the net member; An animal-proof fence.

Images