JP2000245273A - Tree supporting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a buried type tree supporting tool not only manifesting a sufficient supporting force not to sway or fall a tree even with a strong wind but also enabling the installation by simple operations. SOLUTION: This tree supporting tool is based on a tree supporting tool used by installing a root ball N of the tree to be planted on the bottom of a burying hole H for burying the root ball N and comprises a pedestal 10 arranged at the bottom of the burying hole H in order to place the root ball N, a connecting means 30 for fixedly connecting the root ball N to the pedestal 10 and at least three anchor rods 20 having a screw 22 formed on the outer periphery, screwed from the bottom of the burying hole H into the downward ground and fixed to the edge of the pedestal 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tree support used for preventing a planted tree from shaking or falling.

[0002]

2. Description of the Related Art At present, when the momentum for environmental maintenance is increasing, planned tree planting for the purpose of greening is performed in various places such as parks and towns. The roots of the trees that are used for planting are usually in a state called a root mortar made by attaching soil to the lumps. Generally, the root mortar is buried in the burial hole corresponding to this root mortar. By doing so, tree planting is performed.

[0003] By the way, trees planted require about three years for their roots to take root in the surrounding soil. Therefore, it can be said that the trees immediately after planting lack stability. . Therefore, various tree supports have been proposed for the purpose of preventing the tree from shaking or falling down until the roots of the tree are firmly rooted.

For example, a wooden tree support in a torii shape, or a tree support in which a ring-shaped member for supporting a tree trunk from the outside is supported by a column is used. These ground-type tree supports that support trees on the ground have been widely used because they are easy to install and can be expected to have some effect at a low cost. However, these ground-type tree supports tend to obstruct the passage of members such as pillars on the ground, and above all, they cannot dispel the fear of insufficient capacity in terms of their ability to support trees.

[0005] In view of the above, there has been proposed an embedded tree support that is used by being installed at the bottom of a burial hole in which a root pot is buried. The embedded tree support is provided with a pedestal arranged at the bottom of the burial hole for mounting the root mortar, and a resistance plate extending radially in the horizontal direction from the pedestal. And fixed to the pedestal by
By inserting a resistance plate into the side of the buried hole, it is like supporting a tree underground.

The buried tree support has no protruding portion on the ground, so that it does not hinder traffic, and has an advantage that it has a better supporting force than a general ground-type tree support. However, this embedded tree support has a drawback that the work of driving the resistance plate into the side surface of the buried hole is troublesome. Although the embedded tree support has a certain performance in terms of supporting force, it is obvious that the supporting force should be further improved.

[0007]

SUMMARY OF THE INVENTION The present invention has been made from such a viewpoint, and not only can provide sufficient supporting force to prevent trees from shaking or falling down even by strong winds, It is intended to improve the embedded tree support so that it can be installed at the same time.

[0008]

As described above, a tree support according to the present invention is an embedded tree support, that is, a tree support used by being installed at the bottom of a burial hole for burying a root pot of a tree to be planted. A pedestal arranged at the bottom of the burial hole for placing the root mortar, connecting means for fixedly connecting the root mortar to the pedestal, and a ground below the bottom of the burial hole. At least three anchor rods screwed in and secured to the pedestal edge and formed with a screw on the outer periphery.

This tree support is provided with an anchor rod, by which the pedestal is fixed to the bottom of the burial hole. Since the anchor rod is provided with a screw on the outer periphery, the effort for screwing the anchor rod from the bottom of the burial hole into the ground can be reduced, and the installation can be easily performed. Further, the screw provided on the outer periphery of the anchor rod functions to prevent the anchor rod from falling out of the ground at the bottom of the buried hole, but in the present invention, the screw causing this resistance is further below the bottom of the buried hole. , The supporting force for fixing the pedestal is further improved as compared with the conventional product. In other words, the pressure acting on an object underground is, in a nutshell,
A part that receives the soil mass in a deeper part than the conventional product, which is limited in the depth of the bottom of the burial hole because it is proportional to the mass of the soil existing in the cone formed above the object (screw) With the arrangement, the tree support according to the present invention can apply a greater pressure to the screw than the conventional product. As a result, the pedestal can be fixed more firmly than before, and the supporting force of the tree can be improved.

Here, the screw provided on the outer periphery of the anchor rod can be provided over the entire length of the anchor rod, but can also be provided only at the tip end of the anchor rod. Even with an anchor rod provided with a screw only at the distal end portion, it is possible to sufficiently exhibit the characteristics that screwing is easy and hard to remove. Further, it is necessary to provide at least three anchor rods. This is because when only two anchor rods are provided, the anchor rods cannot withstand the torque generated by trees when the wind blows in a direction perpendicular to the straight line connecting the anchor rods. This is because the limit value of the bearing force varies depending on the direction.

From this point of view, when three or more anchor rods are used, it is possible to suppress a change in the limit value of the resistance generated by the anchor rod depending on the direction to a small range. In this case, if three or more anchor rods are used, four or five or more anchor rods may be used. However, if only three anchor rods are used, the uniformity in the direction related to the limit value of the resistance force is obtained. Is preferable because it can be obtained with a relatively simple structure. For example, the resistance obtained when four anchor rods are arranged at the vertices of a square is such that, when the wind blows in the direction of one side of the square, the torque parallel to one side of the square is One diagonal direction in the square, while two anchor rods generate resistance to prevent slipping out and two leeward anchor rods generate resistance to prevent sinking, while generating large resistance. In the case of a torque parallel to one diagonal line in a square generated when wind blows, one anchor rod on the windward side generates resistance to prevent slipping, and one anchor rod on the leeward side sinks. The insufficiency of the two intermediate anchor rods results in a lower resistance than in the above case. When three anchor rods are used, such a variation in the limit value of the resistance can be reduced, and the stability in supporting the tree can be enhanced. In the configuration using three anchor rods as described above, a pedestal is formed by combining three rods into a substantially triangular shape such that one end thereof is fixed to an intermediate position of another rod, and The present invention can be easily implemented by fixing the anchor rods at the three other ends of the bar protruding from the pedestal.

Further, in the present invention, the tree is supported by fixing the pedestal fixed to the lower part of the burial hole and the root basin of the tree by the connecting means. Any device can be used as long as the fixed connection with the device can be reliably performed. For example,
It is possible to provide a connecting means from a wire to be hung from the upper surface to the root mortar and a hook member provided at the other three places of the bar to hook the lower portion of the wire to the pedestal. According to this configuration, the connection between the pedestal and the root pot can be performed with a very simple configuration and with a small work load, and sufficient connection can be performed by pressing the root pot against the pedestal with the wire. become. On the other hand, a connecting means may be provided by three pillars extending upward from the other end of the bar and a ring member attached to the upper part of the pillar to restrain the tree trunk from the outside. When such a configuration is adopted,
Not only the support at the pedestal portion, but also the tree support at a portion separated by a certain distance upward from the pedestal can support the tree with a high sense of stability.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first and a second embodiment of a tree support according to the present invention will be described below with reference to FIGS. In the description of each embodiment, the same reference numerals are given to the overlapping portions, and the overlapping description will be omitted.
1 and 2 show the first embodiment, and FIGS. 3 and 4 show the second embodiment.

First Embodiment: A tree support according to the first embodiment includes a pedestal 10 and three anchor rods 20, 20, 20.
The connection means 30 is provided at the bottom of the burial hole H for burying the root pot N of the tree T as shown in FIG.

As shown in FIG. 2, the pedestal 10 has three bars 11, 11, 11 each having one end connected to the other bars 11, 11, and 11.
They are combined in a substantially triangular shape so as to be fixed at an intermediate position between 1 and 11. Each bar 11, 11, 11 has an inner bar 11b, a hollow outer bar 11a, 11a, 11a.
11b, 11b inserted so as to be slidable, and the inner rod 1
1b, 11b, 11b are replaced with outer bars 11a, 11a, 11a.
The inner rods 11b, 11b, and 11b are fixed to the outer rods 11a, 11a, and 11a by inserting and removing pins 11c, 11c, and 11c. By making it possible, the diameter can be maintained.

The inner rods 11b, 11b, 11b
At the front end, substantially trapezoidal holding plates 12, 12, 12 are attached, respectively. Each of the holding plates 12, 12, 12 is provided with a ring-shaped hooking member 31, 31, 31, respectively. Although not shown, the holding plates 12, 12, 12 are provided with insertion holes for inserting the anchor rods 20, 20, 20, respectively.

The anchor rods 20, 20, 20 are
Screws 21, 22, around the outer periphery of the tip of 1, 21, 21
A washer 24, 24, 24 is provided near the upper end of the shaft rod 21, 21, 21 and has two holes 23, 23 drilled at opposing positions. This anchor rod 2
0, 20, 20 are the cracked portions 25, 25 and the gripping portion 2
It is screwed into the ground below from the bottom of the buried hole H using a screw-in rod 27 as shown in FIG.
That is, the cracked portions 25, 25 provided on the threaded rod 27
Is inserted into the two holes 23, 23 formed in the washer 24, and the worker descending to the bottom of the buried hole H rotates the two gripping portions 26, 26 protruding from the threaded rod 27. The anchor rod 20 is rotated by the
Screw 0 into the ground. The screwed anchor rods 20, 20, 20 have their base ends penetrated through insertion holes formed in the respective holding plates 12, 12, 12, and nuts 28, 28, 28 are screwed into the base ends. By doing so, it is fixed to each holding plate 12, 12, 12.

This tree support is used as shown in FIG. That is, the screwed anchor rods 20, 20, 20
And the pedestal 10 are fixed by nuts 28, 28, 28, and wires 32, 32, 32
And the lower part of the wires 32, 32 is passed through the above-mentioned hanging members 31, 31, 31 to be weaved back, so that the tree T is supported. It should be noted that connecting members 32a, 32a are attached to the wires 32, 32 so that looseness of the attached wires 32, 32 can be removed and tightened. In this embodiment, the connecting members 30 are constituted by the hook members 31, 31, 31 and the wires 32, 32.

[0019] Second Embodiment: Trees support in the second embodiment, as shown in FIGS. 4 and 5, is similar to that of essentially the first embodiment. This tree support
The difference from the first embodiment lies in the connection means.

The connector 30 in the tree support of the second embodiment extends upward from the holding plates 12, 12, 12 attached to the tips of the three bars 11, 11, 11 as described above. Three pillars 33, 33, 33, a ring member 34 whose lower surface is supported at the tip of the pillar, and a support wire 35 stretched inside the ring member 34 in a triangular shape. Has become. The three pillars 33, 33, 33 are preferably made of a tree T at a portion appearing on the ground so as not to obstruct traffic on the ground.
A curve is provided so as to approach the center of the pedestal 10 upward.

FIG. 3 shows a state in which the tree is supported by the tree supporting tool. The root N is restrained from the outside by three pillars 33, 33, 33, and the trunk of the tree T is supported via the support wire 35. The tree T is supported by being constrained by the ring member 34. In addition, the ring member 34 can be equally divided into three so that the trunk of the tree T can be inserted into the inside thereof.

[0022]

According to the tree support according to the present invention, the pedestal is fixed to the bottom of the buried hole by using an anchor rod having a screw formed on the outer periphery. And fixation can be performed with a simple operation. In addition, by forming the pedestal by combining three bars in a substantially triangular shape, it is possible to reduce the variation in the limit value of the supporting force depending on the direction.

[Brief description of the drawings]

FIG. 1 is a side view showing a tree support according to a first embodiment of the present invention.

FIG. 2 is a front view showing the tree support according to the first embodiment of the present invention.

FIG. 3 is an enlarged perspective view showing a holding plate and a threaded rod of the tree support according to the first embodiment of the present invention.

FIG. 4 is a side view showing a tree support according to a second embodiment of the present invention.

FIG. 5 is a front view showing a tree support according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pedestal 11 Bar 12 Holding plate 20 Anchor rod 21 Shaft rod 22 Screw 24 Washer 30 Connection means 31 Hook means 32 Wire 33 Support 34 Ring member 35 Support wire T Tree N Nejicho H Buried hole

Claims (4)

[Claims] 1. A tree support used by being installed at the bottom of a burial hole for burying a root pot of a tree to be planted, comprising: a pedestal arranged at the bottom of the burial hole for mounting the root pot; Connecting means for fixedly connecting the root mortar to the base, and at least three screws formed on the outer periphery, which are screwed into the ground below from the bottom of the buried hole and fixed to the edge of the pedestal. Tree support with anchor rod. 2. The pedestal is formed by combining three rods in a substantially triangular shape such that one end thereof is fixed at an intermediate position of another rod, and the anchor rod is formed by the other end 3 of the rod. A tree support fixed to each location. 3. The connecting means comprises a wire extending from the upper surface to the root mortar, and a hook member provided at three other ends of the bar for hanging a lower portion of the wire to the pedestal. 2. The tree support according to 2. 4. The connecting means comprises three pillars extending upward from the other end of the bar, and a ring member attached to an upper portion of the pillar to restrain a tree trunk from outside. Item 3. The tree support according to Item 2.