JPH089796A - Method for supporting trees and supporter therefor - Google Patents

Abstract

PURPOSE:To firmly support a tree through simplified operations in no need of operations for driving a rod in the planting hole. CONSTITUTION:A base frame 3 is placed on the bottom of a planting hole 2 which is dug on the ground 1, the root ball 22 of a tree 21 is placed at the center of the base frame 3, and tied thereto and the planting hole 2 is filled with soil for restoration. In this case, a plurality of supporting arms 4 equipped with a pressing plate 16 at their projection ends are radially set on the outer periphery of the base frame 3 so that the arms can freely extend or shrink and each supporting arm 4 is extended so as to make the pressing plate 16 be in contact with the soil wall 15 of the planting hole 2 before the hole 2 is covered with the soil, whereby the supporting arms 4 are fixed to the base frame 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for supporting trees.

[0002]

2. Description of the Related Art For example, trees are artificially planted on pavements, roads, parks and the like from the viewpoint of improving the cityscape and habitability. Conventionally, as a means for planting such trees on the ground, a base frame consisting of a plurality of pipe materials arranged in a grid pattern is placed on the bottom of the planting hole cut into the ground, and the base frame is placed at the center of the upper surface of the base frame. The root pot of the tree that was placed is tied to the base frame with a belt, and the fixed rod that is installed at the tip of the pipe material so that it can extend and retract in the axial direction is pierced on the vertical side of the planting hole, thereby stabilizing the tree after planting. There is a method (see Japanese Patent Laid-Open No. 2-219527).

[0003]

However, according to the above-mentioned conventional technique, since the fixing rod is pierced into the vertical side surface of the planting hole, if there is a large stone or the like in the ground at the driving-in place, the fixing rod is fixed. It may not be possible to drive it, and thus the desired supporting strength may not be obtained. On the contrary, when the ground at the driving-in location is soft, the driving of the fixing rod becomes easy, but in this case as well, the desired strength may not be obtained.

On the other hand, in order to facilitate the work of piercing the fixed rod, the fixed rod may be made thin, but this time the strength of the fixed rod itself weakens, and the fixed rod may break during driving and weaken the supporting strength of trees. become. Further, in order to pierce the fixed rod that can move in and out in the axial direction of the pipe material into the vertical side surface of the planting hole, it was necessary to shake the hammer laterally and drive the fixed rod, which was a very heavy labor.

In view of the above situation, the present invention does not require the work of driving the rod in the planting hole,
An object of the present invention is to provide a tree supporting method and a tree supporting device capable of firmly supporting a tree by a simple operation.

[0006]

[Means for Solving the Problems] In order to achieve the above object,
The present invention has taken the following technical means. That is, the method of the present invention places the base frame on the bottom surface of the planting hole cut into the ground,
In a method of supporting a tree in which a root pot of a tree placed at the center of the upper surface of the base frame is tied to the base frame, and then the planting hole is backfilled, a plurality of supporting legs having a pressing plate fixed to a protruding end are provided. Is provided on the outer peripheral portion of the base frame so as to be able to extend and retract in the radial direction thereof, and before the backfilling of the planting hole, each pressing leg is projected so as to come into contact with the vertical side surface of the planting hole, and the contact position Then, each supporting leg is fixed to the base frame.

Further, the device of the present invention is provided with a base frame placed on the bottom surface of the planting hole cut into the ground, and the root pot of the tree placed at the center of the upper surface of the base frame is tied to the base frame. In the tree supporting device, a plurality of support legs are provided on the outer peripheral portion of the base frame so as to be able to move back and forth in the radial direction of the base frame,
A pressing plate that is in contact with the vertical side surface of the planting hole is fixed to the protruding end of the support leg, and a fixing means that fixes the support leg to the base frame is provided at a position where the pressing plate is in contact with the vertical side surface. It is characterized by being

In this case, it is preferable to fix a lateral ground plate on the non-ground surface side of the pressing plate for the reason described later. Further, in this case, the outer peripheral portion of the base frame is configured by connecting both end portions of the plurality of frame members to each other through a pair of upper and lower connecting plates, and the pair of connecting plates is connected to the end portions of the plate and the frame member. The support leg can be inserted between the pair of connecting plates in order to fix the support leg to the base frame by tightening with a bolt penetrating the support leg.

[0009]

In the present invention, each support leg 4 is projected so that the pressing plate 16 is in contact with the standing side surface 15 of the planting hole 2, and each support leg 4 is fixed to the base frame 3 at this contact position.
Each support leg 4 is radially stretched between the vertical surfaces 15, whereby the base frame 3 is firmly fixed in the planting hole 2.

Therefore, when the tree 21 is planted,
There is no need to drive the fixed rod like in the past.
After planting, the force to push down the tree 21 is the pressing plate 1
6 reliably receives, which stabilizes the tree 21. Further, if the lateral ground plate 19 is fixed to the non-ground surface side of the pressing plate 16, earth pressure acts on the ground plate 19 from above, and the floating of the base frame 3 is prevented.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 6, the tree supporting apparatus according to the present embodiment is provided with a base frame 3 placed on the bottom surface of a planting hole 2 cut into the ground 1 and a peripheral portion of the base frame 3 so as to be capable of retracting. And a plurality of supporting legs 4.

As shown in FIG. 2, the base frame 3 is provided with an outer peripheral frame 6 formed by connecting six frame members 5 made of square pipes in a regular hexagonal shape in plan view and a diagonal line of the outer peripheral frame 6. And a guide member 7 made of a square pipe. The guide members 7 are connected to each other at their base ends via a pair of upper and lower discs 8 arranged at the center of the outer peripheral frame 6, and their outer ends are radially directed toward the connecting parts of the frame member 5. Extends to.

The upper and lower discs 8 are connected to each other by vertical bolts 9. By sandwiching the base end portion of the guide member 7 between the upper and lower discs 8, the respective guide members 7 are sandwiched.
Are radially connected to each other. The guide member 7
The base end portion of may be welded to the disc 8. As shown in FIG. 3, the frame members 5 are connected to each other via connecting means 5A, and the connecting means 5A is composed of a pair of upper and lower connecting plates 10 and 11 and bolts 14 for fastening them together. The pair of connecting plates 10 and 11 is 12
The upper plate 10 is bent at 0 degrees and has a substantially V-shape in plan view. Side walls 12 are formed at both ends of the upper plate 10 in the width direction, and the side walls 12 have a guide hole 13 for the support leg 4 at the center.

The connecting plates 10 and 11 are provided above and below the ends of the frame members 5 connected to each other so as to bridge the ends of the frame members 5. The plates 10 and 11 and the frame member 5 are connected to each other. Two pairs of bolts 14 that pass through the ends of the
By fastening both plates 10 and 11 with each other, the ends of both frame members 5 are connected to each other. The support leg 4 is a square pipe having a cross section slightly larger than that of the guide member 7, and the base end portion of the support leg 4 is slidably fitted on the outer end portion of the guide member 7, thereby supporting the support leg. 4 can move in and out in the radial direction of the base frame 3.

Further, the base frame 3 is provided with a fixing means 4A for fixing the support leg 4 to the base frame 3 at a position where a pressing plate 16 which will be described later is in contact with the vertical side surface 15 of the planting hole 2. In this embodiment, the connecting means 5A is the fixing means 4A.
It also has the function of. That is, each support leg 4 is inserted between the pair of connecting plates so that the middle portion thereof is housed in the side wall 12 of the upper plate 10, and the outside of the guide member 7 inserted into the support leg 4 is inserted. The ends reach the upper and lower connecting plates 10 and 11.

Therefore, when the bolts 14 are loosened, the support legs 4 are guided by the guide members 7 and can move in and out in the radial direction of the base frame 3. On the other hand, when the bolt 14 is tightened, the end portions of both frame members 5 are completely fixed, and the connecting plates 10 and 11 pinch the support leg 4 from above and below, whereby the support leg 4 with respect to the base frame 3. Will be fixed.

In this embodiment, the support leg 4 to be withdrawn and withdrawn.
Is externally fitted to the guide member 7, and the support leg 4 is sandwiched between the connecting plates 10 and 11.
The cross-sectional dimension of the support leg 4 can be made as large as possible as compared with the case where the support leg 4 is inserted into the guide member 7, whereby the strength of the support leg 4 can be improved, and the support leg 4 can be connected to the connecting plate 1.
Since the pressure is directly clamped by 0 and 11, the fixing force of the support leg 4 is also stable.

Further, at the protruding end of the supporting leg 4, when the supporting leg 4 is protruded and stretched in the planting hole 2, the protruding end is fixed by friction to the standing side face 15 so that the projecting end of the planting hole 2 can be fixed. A pressing plate 16 that is in contact with 15 is fixed. The pressing plate 16 is made of a wide steel plate whose lateral width is larger than its height. In this embodiment, the pressing plate 16 is formed in a curved shape slightly bulging on the surface (grounding surface) side assuming the circular planting hole 2. .

A backup plate 17 is fixed to the back surface (non-ground surface) of the pressing plate 16, and a triangular reinforcing rib 18 is provided between the back surface of the plate 17 and the upper surface of the support leg 4.
Is installed. On the other hand, a ground plate 19 arranged laterally is integrally formed at the lower end on the back side of the pressing plate 16,
The ground plate 19 is fixed to the rear surface of the projecting end of the support leg 4 by welding or the like.

The pressing plate 16 and the ground plate 19 may be formed of a smooth plate having no uneven surface on the ground surface as shown in FIG. 2, but they are pressed into a continuous uneven shape as shown in FIG. Forming and attaching the shallow horizontal stripes 20 can strengthen the frictional force at the time of ground contact and prevent deformation due to earth pressure. Further, vertical stripes may be formed on these plates 16 and 19 by press molding.

A base frame 3 is provided in the middle of the support leg 4.
A retaining ring 24 of a belt 23 for binding the root pot 22 of the tree 21 placed at the center of the upper surface of the to the base frame 3 is provided. Next, a working method for planting trees using the above-mentioned supporting device will be described.

First, as shown in FIG. 2, each support leg 4 is retracted to the center side of the base frame 3, and in this state, the base frame 3 is placed substantially at the center of the bottom surface of the planting hole 2 cut into the ground 1. To do.
Next, as shown by phantom lines in FIG. 2, each support leg 4 is projected along the guide member 7 until the pressing plate 16 comes into contact with the vertical side surface 15 of the planting hole 2, and the pressing plate 16 is raised. Bolts 1 of the connecting plates 10 and 11 in a state of being interviewed with
The support legs 4 are fixed to the base frame 3 by tightening 4 so that the support legs 4 are stretched in the radial direction of the planting hole 2.

After that, the root pot 22 of the tree 21 is placed on the base frame 3 so that the trunk 25 of the tree 21 comes directly above the disk 8 in the center of the base frame 3.
Then, the root pot 22 is bound to the base frame 3 with the belt 23 inserted into the retaining ring 24. After fixing the root pot 22 to the base frame 3 in this way, the planting hole 2 is backfilled with the soil at the time of excavation, whereby the planting operation of the tree 21 is completed.

In the above-mentioned planting method, each supporting leg 4 can be fixed to the base frame 3 after the root pot 22 is tied to the base frame 3, and in short, before the backfilling of the planting hole 2 is performed. However, if the root pot 22 is bound first, it will hinder the tightening of the bolts 14. Therefore, it is preferable to perform the work of stretching the support legs 4 before placing the root pot 22 as described above.

FIG. 7 shows the operation of the above supporting device after planting the tree 21. That is, when a lateral force (leftward in FIG. 7) acts on the tree 21 due to wind pressure or the like,
The tree 21 tends to fall in the direction of the force, and the base frame 3 tends to be lifted on the opposite side of the force. In this respect, in the supporting device, since the support plate 4 is stretched in the radial direction of the planting hole 2 so that the pressing plate 16 is brought into contact with the vertical side surface 15 of the planting hole 2, the force for pushing down the tree 21 is increased. Is supported by the reaction force it receives from the hard soil that has not been excavated.

Further, since the weight of backfilled soil acts on the lateral grounding plate 19 provided on the non-grounded surface side of the pressing plate 16, the force for lifting the base frame 3 is offset by the weight of this soil. It Therefore, in the support device of this embodiment, the force of pushing down the tree 21 is surely received by the pressing plate 16 and the force of lifting the base frame 3 is surely received by the grounding plate 19, so that the tree 21 after planting is firmly supported. Will be done.

The present invention is not limited to the above embodiments, but includes all configurations within the meaning of the claims. For example, in the above embodiment, the supporting legs 4 do not have to be provided corresponding to all the guide members 7, and it is also possible to provide only three every other. Also,
The outer peripheral shape of the base frame 3 may be formed in a polygon other than a hexagon, or may be circular.

Further, the fixing means 4A of the supporting leg 4 may be provided separately from the connecting means 5A of the frame member 5. Further, the ground plate 19 need not be provided if a large supporting force is not required depending on the size of the tree 21. In addition, although the case where the planting hole 2 is circular is illustrated in the above embodiment, the present invention can also be adopted when the planting hole 2 is square.

In this case, the support leg 4 may be provided so as to be retractable in a direction substantially orthogonal to the four vertical sides. In this sense, the “radial direction” referred to in the present specification may be a direction in which each support leg 4 can be projected so that the pressing plate 16 can be in contact with the vertical side surface of the planting hole, and different support leg 4 can move in and out. It also includes the case where the directions are parallel to each other.

[0030]

As described above, according to the present invention,
By simply fixing each support leg 4 to the base frame in a state where the pressing plate 16 is grounded to the vertical surface 15 of the planting hole 2, the base frame 3 is firmly fixed in the planting hole 2 by the support leg 4 acting as a strut member. Since it can be fixed, it is not necessary to drive the fixing rod deeply in the lateral direction as in the conventional case, the planting work of the tree 21 can be simplified, and the tree 21 can be firmly supported after planting.

When the lateral grounding plate 19 is fixed to the non-grounding surface side of the pressing plate 16, earth pressure acts on the grounding plate 19 from above to prevent the base frame 3 from floating. The support strength of the tree 21 can be further improved. Further, both ends of the frame member 5 are connected to each other by a pair of upper and lower connecting plates 10 and 11, and the support leg 4 is interposed between the connecting plates 10 and 11.
When the support leg 4 is fixed to the base frame 3 by a bolt 14 which is inserted through the plate 10 and 11 and penetrates the end portions of the frame member 5, the fixing means 4A of the support leg 4 and the frame member 5 are connected. It can be used also as the means 5A, and the number of parts of the supporting device can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a tree support device.

FIG. 2 is a plan view of the support device.

FIG. 3 is a partial plan view of the support device.

FIG. 4 is a partial side view of the support device.

FIG. 5 is a front view of a pressing plate.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is an operation explanatory view of the supporting apparatus.

[Explanation of symbols]

 1 Ground 2 Planting Hole 3 Base Frame 4 Support Leg 4A Fixing Means 10 Connection Plate (Upper Plate) 11 Connection Plate (Lower Plate) 14 Bolt 15 Elevated Side 16 Pressing Plate 19 Ground Plate 21 Tree 22 Root Pot

Claims (4)

[Claims] 1. A root pot of a tree (21) having a base frame (3) placed on the bottom surface of a planting hole (2) cut into the ground (1) and placed at the center of the upper surface of the base frame (3). In the method for supporting a tree, in which (22) is tied to the base frame (3) and then the planting hole (2) is backfilled, a plurality of supporting legs having a pressing plate (16) fixed to a protruding end ( 4) is provided on the outer peripheral portion of the base frame (3) so as to be able to extend and retract in the radial direction, and the pressing plate (16) is provided on the vertical side of the planting hole (2) before backfilling the planting hole (2). A method for supporting a tree characterized in that each supporting leg (4) is projected so as to come into contact with (15), and each supporting leg (4) is fixed to the base frame (3) at this interviewing position. 2. A base frame (3) mounted on the bottom surface of a planting hole (2) cut into the ground (1), the tree (21) mounted on the center of the upper surface of the base frame (3). In a tree support device in which a root pot (22) is bound to the base frame (3), a plurality of support legs (4) are provided on the outer peripheral portion of the base frame (3) in a radial direction of the base frame (3). The support leg (4) is provided at the projecting end of the supporting leg (4) at the vertical side surface (15) of the planting hole (2).
The pressing plate (16) that is in contact with the
A fixing means (4) for fixing the supporting leg (4) to the base frame (3) at a position where the supporting leg (4) is in contact with the raised side surface (15).
A) a tree supporting device, characterized in that A) is provided. 3. The tree supporting device according to claim 2, wherein a lateral grounding plate (19) is fixed to the non-grounding surface side of the pressing plate (16). 4. The outer peripheral portion of the base frame (3) is provided with a pair of upper and lower connecting plates (10) (1) at both ends of a plurality of frame members (5).
1) and the pair of connecting plates (10) and (11) are connected by bolts (14) penetrating the ends of the plates (10) and (11) and the frame member (5). The support leg (4) is inserted between the pair of connecting plates (10) (11) so as to fix the support leg (4) to the base frame (3) by tightening. The tree supporting device according to item 3.