JPH10248413A - Supporting tool for tree root part used for tree supporting construction, and tree supporting construction method using the supporting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the supporting tool which maintains a satisfactory supporting state depending on the growth of a tree by providing thermoplastic polyurethane for at least a part so as to minimize influence such as cutting into the tree without loosing the fastening force of the root part of the tree. SOLUTION: Thermoplastic polyurethane is used for at least a part of the supporting tool. For example, a supporting main body 1a is constituted of decomposable material and is coated with a protective material 4 consisting of the thermoplastic polyurethane. As thermoplastic polyurethane, polyether thermoplastic polyurethane containing polyetherpolyol or the mixture of polyester thermoplastic polyurethane containing polyesterpolyol and polyether thermoplastic polyurethane is used. In addition, it is possible to use only polyester thermoplastic polyurethane and to add antifungal agent to this.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support for a root of a tree in the support of a tree, and a method of supporting a tree using the support. The present invention relates to a method for supporting and constructing a tree, and a support for supporting the root of the tree at that time.

[0002]

2. Description of the Related Art In general, a method of supporting a tree of this kind is to store a root pot in a planting hole formed in advance on the ground, install a support around the root of the tree in a wound state, Method of hanging the tensioning wire hung on the root mortar, hooking it on the anchor driven into the bottom wall of the planting hole, generating tension on the wire, and supporting and fixing the tree as a whole It is.

[0003] In such a construction method, since the support for supporting the root of the tree is a fulcrum for the whole structure of the support construction, any support is used. How or how to install it at the root of the tree is an important issue.

[0004]

However, such a support is installed in a state of being wound around the root of a tree and tightens the root with the passage of time. It has essentially contradictory problems.

[0005] That is, in order to ensure the support work, it is preferable to maintain a predetermined tightening force against the root of the tree. From this viewpoint, the support tool is adapted to the root of the tree as much as possible. Preferably, it is wound.

[0006] However, as the tree grows, the thickness of the entire trunk increases, and the thickness of the root also increases. Therefore, if a support is fitted around the root from the beginning and the support is wrapped, the support inadvertently cuts into the root of the tree as the tree grows.

[0007] On the other hand, if the tree is predicted to grow and is initially loosely wound with a diameter larger than the root of the tree, the tightening force will be impaired.

[0008] In particular, in this type of tree support construction, since the tree is supported not only by the support but also by the above-described stretching wires and anchors, the base is wound around with the support. Is the fulcrum of the entire tree support structure. Therefore, when the tree has a tilting force and the support is loosely wound around the root of the tree, the base of the tree, that is, the tree support structure, depends on the diameter at which the support is wound. The fulcrum moves with the movement of the stress, and as a result, there is a possibility that even the tensioning wire may be loosened, and the function as a structure of the entire support construction is impaired. Further, even if the support is loosely wound around the root of the tree, the problem that the support bites into the root of the tree due to the growth of the tree is not solved.

[0009] These conflicting problems cannot be solved essentially simultaneously.

The present invention has been made in order to solve such problems, and it is possible to minimize the influence of cutting into a tree without impairing the tightening force at the root of the tree and to minimize the influence of tree growth. It is an object of the present invention to maintain a suitable winding support state.

[0011]

DISCLOSURE OF THE INVENTION The present invention has been made to solve such problems, and a support tool for a tree root portion in a tree support work and a tree support work using the support tool are provided. The feature as a support for the root of the tree in the support construction of the tree is a support for supporting the root of the tree in the support of the tree, and at least a part of the thermoplastic polyurethane Is provided.

As means to be provided, for example, there is a method in which the support body 1a is made of a decomposable material, and the support body 1a is covered with a protective material 4 made of thermoplastic polyurethane.

As the thermoplastic polyurethane, for example, a polyether thermoplastic polyurethane containing a polyether polyol, or a mixture of a polyester thermoplastic polyurethane containing a polyester polyol and a polyether thermoplastic polyurethane is used.

Preferably, a mixture of 50 to 99% by weight of a polyether thermoplastic polyurethane and 1 to 50% by weight of a polyester thermoplastic polyurethane is used.

More preferably, a mixture of 70 to 95% by weight of a polyether-based thermoplastic polyurethane and 5 to 30% by weight of a polyester-based thermoplastic polyurethane is used.

It is also possible to use only a polyester thermoplastic polyurethane and to add an antibacterial agent thereto.

The amount of the antibacterial agent is not critical, but is preferably contained in an amount of 0.1 to 15% by weight.

The feature of the tree supporting construction method is as follows.
In a tree supporting construction method in which a tree base is tightened with a fastener to support a tree, a thermoplastic polyurethane is provided on at least a part of the fastener, and the tree is supported in accordance with the number of years of tree growth. The purpose of the present invention is to release the tightened state of the root part in a timely manner.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 A description will be given of the structure of the support 1 at the base of a tree in the tree support operation as one embodiment.
As shown in FIG. 1, the whole is formed in a substantially plate-belt shape, and is made of hemp.

Reference numeral 2 denotes a fixture for fixing both ends of the support body 1a and having a function as a buckle for adjusting the length of the belt. As shown in FIG. The fastening tool body 1a is fastened by inserting both ends of the fastener main body 1a into a plurality of holes 3, 3 provided.

Reference numeral 4 denotes a protective material made of a thermoplastic polyurethane elastomer, which is coated on the surface of the support body 1a. As a result, a process that can be degraded in accordance with the growing years of the tree is performed.

The thermoplastic polyurethane elastomer is obtained as a linear polymer by using a polyol, a diol and a diisocyanate as raw materials, and subjecting the polyol and the diol to an addition reaction with a diisocyanate. Is a flexible portion (soft segment) of the elastomer, and a hard portion (hard segment) of diisocyanate and diol.

In this embodiment, a mixture of 90% by weight of a polyether-based thermoplastic polyurethane elastomer and 10% by weight of a polyester-based thermoplastic polyurethane elastomer is used as the thermoplastic polyurethane elastomer.

The polyether-based thermoplastic elastomer and the polyester-based thermoplastic elastomer use a polyether polyol and a polyester polyol, respectively, as the polyol among the three components of the above-mentioned raw materials.

A tree root support 1 having the above structure
When a tree is supported and constructed, it is installed and used around the root of the tree.

Next, a specific description will be given of a case where the support 1 of the tree root is wound around the root of the tree to be supported and constructed, together with an example of a tree supporting construction method.

First, as shown in FIG. 3, the soil 8 is sprayed on the bottom surface 7 of the planting hole 6 formed in advance, and the mounting body 9 for the root pot is mounted on the upper part thereof as shown in FIG. Place.

Next, the support body 11 is expanded by sliding the four slide rods 10,... Of the mounting body 9 for roots as described above outward, respectively. The four driving rods 12,... Fixed to the upper surface of the
As shown in FIG.

After the driving rods 12,... Have been driven in as described above and the mounting body for root mortar 9 has been fixed, as shown in FIG. Is placed.

Next, as shown in FIG. 7, a wire 17 for stretching is attached to the root portion 16 of the tree 15 and the mounting body 11 (more specifically, the root portion of the slide rod 10) substantially immediately below the root pot 14. Hang around.

At this time, as shown in FIG. 7 and FIG.
A protection pad 18 is attached to the shoulder of the root bowl 14 to protect the 14 from biting of the tensioning wire 17.

Next, the root 16 of the tree 15 and the wire for tensioning
In the case of linking with 17, as shown in FIGS. 7 and 8,
The support tool 1 is wound around the root portion 16 of the tree 15, and the fastening wires 19 are attached to the fasteners 19 attached to the support tool 1.
Hook.

In this case, the support 1 is provided at the base 16 of the tree 15.
Loosely so that it does not directly contact the

Thereafter, tension is generated in the tensioning wire 17 by the winch 20.

Then, the root pot 14 is supported by the tension.

In this case, since the support body 1a is formed in the shape of a plate belt, the work of binding the ends of the support body 1a can be easily performed.

After supporting the root 16 of the tree 15 as described above, the soil or the like is buried in the planting hole 6 to complete the tree supporting operation.

The root of the constructed tree gradually becomes thicker with the passage of time, so that the support 1 is wound around the tree 15 in contact with the base 16 of the tree 15. Since the main body 1a is made of hemp and the protective material 4 is made of a thermoplastic polyurethane elastomer which is a flexible material, the support 1 does not inadvertently cut into the tree.

When the date has passed, the root of the tree 15
16 became thicker and came into contact with the support 1,
Although it is impossible to cope with the tightening force, the support member 1a is made of hemp, which is a decomposable material, and the protective member 4 is made of the above-mentioned polyester-based thermoplastic polyurethane elastomer. Gradually deteriorates with the passage of time, so that even if the diameter of the tree increases, the influence of the tree 15 penetrating into the root 16 can be significantly reduced.

More specifically, when the thermoplastic polyurethane elastomer is exposed to a high temperature and high humidity state for a long period of time, the bond in the polyol which is a flexible portion is easily broken. This disconnection of the bond does not immediately cause the decomposition of the protective material 4, but the physical properties of the protective material 4 are reduced, and the protective material 4 is gradually deteriorated.

In particular, since a polyester-based thermoplastic polyurethane elastomer can undergo hydrolysis at its ester bond, the bond is more likely to be broken than in the case of a polyether-based thermoplastic polyurethane elastomer.

Further, the polyester thermoplastic polyurethane elastomer can be decomposed even by microorganisms under the condition of high temperature and high humidity. This is presumed that the enzyme produced by the microorganism acts on the ester bond in the polyester polyol portion.

As a result, in the case of the polyester-based thermoplastic polyurethane elastomer, there is a possibility that the polyester-based thermoplastic polyurethane elastomer may be deteriorated or decomposed earlier than the desired number of years for growing the tree. From this viewpoint, the amount of the polyester-based thermoplastic polyurethane elastomer is 10% by weight. It is stayed at.

Further, the polyurethane itself is gradually deteriorated by ultraviolet rays.

Therefore, the protective material 4 gradually deteriorates due to a synergistic effect of moisture, microorganisms in the soil, temperature, ultraviolet light and the like.

On the other hand, since the support body 1a is also made of hemp, which is a decomposable material, the support body 1a itself gradually deteriorates.

As a result, both the support body 1a and the protection member 4 gradually deteriorate, so that the bite of the support 1 into the root 16 of the tree 15 is reduced as described above.

The deteriorated support 1 is completely disassembled after a lapse of a predetermined number of years after construction of the tree.

On the other hand, when the root of the tree grows, the tree becomes self-sustaining. Therefore, even if the support 1 is not provided, there is no influence on the tree support work.

As described above, in this embodiment, the roots of the tree grow when the support 1 is disassembled, so that the tightening force of the support 1 does not affect the root of the tree, so that the root of the tree is not affected. It can also maintain the tightening force.

Embodiment 2 In this embodiment, 95% by weight of thermoplastic polyurethane was used.
Of a polyether-based thermoplastic polyurethane and 5% by weight of a polyester-based thermoplastic polyurethane.

The structure of the other support 1 is the same as that of the first embodiment.
Therefore, the description is omitted.

Embodiment 3 In this embodiment, 80% by weight of thermoplastic polyurethane was used.
And a mixture of 20% by weight of a polyester-based thermoplastic polyurethane.

The structure of the other support 1 is the same as that of the first embodiment.
Therefore, the description is omitted.

Embodiment 4 In this embodiment, a thermoplastic polyurethane composed of only a polyester-based thermoplastic polyurethane is used.
5% by weight of antimicrobial was added.

Thiabendazole was used as an antibacterial agent.

Other configurations of the support 1 are the same as those of the first embodiment.
Therefore, the description is omitted.

Embodiment 5 In this embodiment, a thermoplastic polyurethane composed of only a polyether-based thermoplastic polyurethane was used.

The structure of the other support 1 is the same as that of the first embodiment.
Therefore, the description is omitted.

Embodiment 6 In this embodiment, the support body 1a is made of a synthetic resin, and as shown in FIG. 9, the attachment 2 for fastening both ends of the fastener body 1a is supported. It is attached to the tool body 1a.

The attachment 2 in the present embodiment does not have a buckle function as in the first embodiment, but is simply formed in the form of an iron plate.

As shown in FIG. 10, both ends of the support body 1a are inserted into holes 3, 3 formed on both sides of the mounting tool 2 as shown in FIG. It is fixed.

Reference numeral 4 denotes a protective material made of an elastic polymer, which is coated on a portion of the mounting 2 except for both sides.
As a result, a process that can be degraded in accordance with the growing years of the tree is performed.

As the elastic polymer, the first embodiment is used.
A mixture of the same polyether-based thermoplastic polyurethane elastomer and polyester-based thermoplastic polyurethane elastomer is used.

The mixing ratio is preferably such that the polyether thermoplastic polyurethane elastomer is 50 to 99% by weight and the polyester thermoplastic polyurethane elastomer is 1 to 50% by weight.

Reference numeral 5 denotes a half-cut portion which is formed in a substantially V-shape at substantially the center of the mounting member 2. In this half-cut portion 5, the mounting member 2 is limited in time according to the number of years of tree growth. It is configured so that it can be divided.

In the present embodiment, the protective material 4 made of the above-mentioned polyester-based thermoplastic polyurethane elastomer deteriorates with the passage of a predetermined number of years, and cracks occur in the protective material 4.

As a result, the iron fixture 2 starts to rust.

When the fixture 2 starts to rust, the fixture 2 gradually loses its strength. However, since a substantially V-shaped half-cut portion is formed substantially at the center of the fixture 2. The mounting fixture 2 which has gradually deteriorated with the passage of time due to rust loses its strength at the thinnest half-cut portion 5, and the mounting fixture 2 is divided at that portion.

As a result, the wrapping state of the tree by the support 1 is released, whereby the tightening force on the tree is released. Therefore, even if the diameter of the tree increases, the root 16 of the tree 15 is inadvertently placed on the root 16. It is possible to remarkably reduce the influence of the bite without the bite.

In this case, since the fixture 2 is covered with the protective material 4, the penetration of moisture and moisture into the fixture 2 is prevented, and the fixture 2 does not start to rust from the beginning.
Therefore, the number of years that the attachment 2 is divided is not inadvertently shortened.

Further, even if the protective member 4 is peeled off due to ineffectiveness, the mounting member 2 is made of iron, so that it is not immediately destroyed.

Other Embodiments In the above-described embodiment, the thermoplastic polyurethane elastomer is made of three components of polyol, diol, and diisocyanate, but the components are not limited to these.

In this embodiment, a thermoplastic polyurethane elastomer containing a polyether polyol or a polyester polyol is used as the polyol, but a thermoplastic polyurethane elastomer containing other polyols can also be used.

The mixing ratio is not critical, but it is preferable that the polyether thermoplastic polyurethane is 50 to 99% by weight and the polyester thermoplastic polyurethane is 1 to 50% by weight. It is preferable that 70 to 95% by weight and 5 to 30% by weight of the polyester thermoplastic polyurethane.

When only a polyester-based thermoplastic polyurethane is used, it is necessary to add an antibacterial agent as in the fourth embodiment.

The compounding amount of this antibacterial agent is not necessarily required to be 5% by weight as in the fourth embodiment, but is preferably 0.1 to 15% by weight.

Further, the kind of the antibacterial agent is not limited to the thiabendazole of the fourth embodiment. For example, silver ion or the like can be used, and other antibacterial agents can be used. .

Further, in the above embodiment, the support body 1a is made of hemp, but the material of the support body 1a is not limited to this, and for example, cotton, jute, straw, paper, wool It can also be made of a degradable material such as silk, leather, wood, or palm.

It is preferable that the support body 1a is made of a degradable material from the viewpoint of disposal, environmental pollution, etc.
When the attachment 2 itself is configured to be separable as in the second embodiment, the support body 1a does not necessarily need to be made of a decomposable material.

Therefore, in addition to these degradable materials, it is also possible to use a synthetic resin as described in the sixth embodiment.

Further, it is also possible to use, for example, a chain or an iron member or a metal wire type.

In the case of the metal such as iron, the support body 1a itself can be disassembled if it is disassembled by rust.

The protective member 4 can be coated on the fixture 2 and the support body 1a by means other than coating.

Further, in the present embodiment, the fastener is constituted by covering the support body 1a with the protective material 4 made of a thermoplastic polyurethane elastomer. However, the present invention is not limited to this. It is also possible to configure the fastener by using a polyurethane elastomer.

Further, as the thermoplastic polyurethane, an elastomer is mainly used as in each of the above embodiments.
It is also possible to use plastomers.

In order to deteriorate the tree in accordance with the age of the tree, the thickness of the support body 1a or the thickness of the protective material 4 to be coated can be adjusted so that the state of winding by the tightening tool 1 can be improved. Can be adjusted when is released.

Further, in the above embodiment, the support body 1a
Formed in a plate-belt shape, the above-described advantageous effects were obtained.However, the shape of the support body 1a is not limited to this. For example, the support body 1a may be formed in a rod shape, a chain shape, or a net shape. It is. Also, a thin linear body may be arranged side by side like a comb and formed as a whole in a substantially harp shape (harp of musical instrument). In this case, any number of the linear bodies may be used. By configuring so as to be divided, the whole can be divided.

When the support body 1a is made of a degradable material, it is not necessary that the whole is made of a degradable material, and only a part may be made of a degradable material.

Further, in the first embodiment, the support member body
The support 1 is provided with the thermoplastic polyurethane by coating the protective material 4 made of thermoplastic polyurethane on 1a. In the sixth embodiment, the thermal protection is achieved by coating the mounting 2 with the protective material 4 made of thermoplastic polyurethane. Although the supporting member 1 is provided with the thermoplastic polyurethane, the means for providing the supporting member 1 with the thermoplastic polyurethane is not limited to this. In short, it is only necessary that at least a part of the supporting member is provided with the thermoplastic polyurethane. is there.

In this embodiment, the driving rod 12 is connected to the
The inner wall 13 is not necessarily driven in this manner. For example, a member that presses the inner wall 13 may be attached to the slide rod 10 and the inner wall 13 may be pressed by the member.

Further, in this embodiment, the mounting body 9 for the root
The tree was supported and fixed by placing the root mortar 14 thereon and hanging the string material 17 wrapped around the root mortar 14 on the mounting body 9 for the root mortar. However, the string material 17 is hung on the anchor 21 driven into the bottom surface 7 of the planting hole 6 as shown in FIG. It is also possible to support and fix the tree by stopping.

In this embodiment, a wire-like cord material is used.
Although 17 is wrapped around the root bowl 14, the cord material 17 is not limited to such a wire-like material, and may be, for example, a plate-like material as shown in FIG.

In the embodiment shown in FIG. 12, four plate-like cord members 17 are provided one by one on the support 1 and on the mounting body 11 (more specifically, at the base of the slide rod 10).

Further, in the above embodiment, the cord material 17 is
It was wrapped around 14 to support and fix the tree.
Instead of using 17, for example, a rod-shaped body to which a pressing piece is attached may be driven into the ground along a root pot, and the root pot 14 may be supported and fixed by pressing the root pot 14 with the pressing piece at the top of the rod-shaped body.

Therefore, the method of supporting and fixing the tree does not matter.

Further, in the above-described embodiment, the base of the tree is supported by installing the support around the root of the tree in a wound state. Not limited to means installed in a wound state around the root portion, for example, as shown in FIG. At 17b, the root of the tree may be surrounded and supported.

Even in this case, if the trunk of the tree grows thicker as the tree grows, the tree will not reach the part where the string 17 intersects.
It comes into contact with 17a, 17b and is tightened and supported at that part.

In this case, the tightening state at the root of the tree is released by cutting off a part of the string 17 in a timed manner, or a winch (not shown) attached to the string 17 Can be released from the cord material 17 in a timely manner to release the tightened state.

In FIG. 13, reference numeral 18 denotes a shoulder pad, and reference numeral 22 denotes an angle that is driven into the ground along the periphery of the root pot 14.

Further, as shown in FIG. 14, it is also possible to fix the root pot 14 by bridging the string material 17 between the adjacent angles 22,22.

[0103]

As described above, the present invention relates to a support for supporting a root portion of a tree when supporting and constructing the tree, wherein the support body includes a protective material made of thermoplastic polyurethane. Or, since at least part of the support body is made of thermoplastic polyurethane, even if the root of the tree gradually becomes thicker with the passage of time, the wound state of the support body is released in a predetermined number of years. As a result, even if the tree grows and the diameter of the tree becomes large, it does not inadvertently cut into the root of the tree, and it is possible to solve various problems caused by the bite.

That is, it is possible to prevent poor tree growth due to the biting of the support tool, and it is also unnecessary to perform the conventional complicated work of cutting the support tool according to the growth of the tree in order to prevent the bite of the support tool. This has the effect.

[Brief description of the drawings]

1A and 1B show a support as one embodiment, wherein FIG. 1A is a schematic perspective view, and FIG. 1B is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 2 is an enlarged sectional view of a main part showing a fastening portion of the support body.

FIG. 3 is a partial cross-sectional side view of a step of mounting the mounting body for a root pot on a bottom wall surface of a planting hole.

FIG. 4 is a partial cross-sectional plan view of a step of mounting the mounting body for a root pot on a bottom wall surface of a planting hole.

FIG. 5 is a partial cross-sectional side view of a step of driving a driving rod into a side wall surface.

FIG. 6 is a partial cross-sectional plan view of a step of driving a driving rod into a side wall surface.

FIG. 7 is a partial cross-sectional side view showing a state in which the root mortar is mounted on the mounting body for root mortar.

FIG. 8 is a partial cross-sectional plan view showing a state where the root mortar is mounted on the mounting body for root mortar.

9A and 9B show a winding device according to another embodiment, wherein FIG. 9A is a schematic perspective view, and FIG. 9B is an enlarged sectional view taken along line BB of FIG. 9A.

FIG. 10 is an enlarged perspective view of a main part showing a fastening portion of the support tool main body of FIG. 9;

FIG. 11 is a schematic perspective view, partly in cross section, of another embodiment of a method for supporting and constructing trees.

FIG. 12 is a schematic plan view, partly in cross section, of another embodiment of a method for supporting and supporting trees.

FIG. 13 is a schematic plan view of another embodiment of a method of supporting and supporting trees.

FIG. 14 is a schematic plan view of another embodiment of a method for supporting a tree.

[Explanation of symbols]

 1: Support 1a: Support body 4: Protective material

Claims (7)

[Claims] 1. A support for supporting a root portion of a tree in a tree supporting operation, wherein at least a part of the supporting member is provided with thermoplastic polyurethane, the tree root portion in the tree supporting operation. Support. 2. A support for supporting a root portion of a tree in supporting the tree, wherein the support body (1a) is covered with a protective material (4) made of thermoplastic polyurethane. A support at the base of a tree in supporting a tree, wherein the support body (1a) is made of a degradable material. 3. The thermoplastic polyurethane according to claim 1, wherein the thermoplastic polyurethane is a polyether-based thermoplastic polyurethane containing a polyether polyol, or a mixture of a polyester-based thermoplastic polyurethane containing a polyester polyol and a polyether-based thermoplastic polyurethane. A support for the root of the tree as described. 4. The thermoplastic polyurethane comprises 50 to 99% by weight of a polyether thermoplastic polyurethane, and 1 to 50% by weight.
The tree root support according to claim 3, wherein the support is made of a polyester thermoplastic polyurethane by weight. 5. The tree root support according to claim 1, wherein the thermoplastic polyurethane is made of a polyester-based thermoplastic polyurethane and to which an antibacterial agent is added. 6. The support according to claim 5, wherein the antibacterial agent is contained in an amount of 0.1 to 15% by weight. 7. A method for supporting and supporting a tree by supporting a tree by supporting a root portion of the tree with a support, wherein at least a part of the support is provided with a thermoplastic polyurethane to cope with a growing age of the tree. And releasing the tightened state of the support to the root of the tree in a timely manner.