JP3386782B2 - Fall prevention device in tree planting stabilizer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fall prevention device in a tree planting stabilizer used for stably holding trees for a predetermined period after tree planting.

[0002]

2. Description of the Related Art When planting a tree that has grown to some extent, a planting stabilizer is installed at the bottom of the excavated planting hole and a root pot of the tree is placed on it in order to withstand strong winds and the like. At the same time, the root pot is tied to a planting stabilizer, and then the planting hole is backfilled.

Various types of such tree planting stabilizers are known, and usually, a pedestal formed by a frame made of a metal constitutes a pedestal. When a root pot is placed on the pedestal, a sling or the like is tightened. The strips are hung over, and the root bowl is tied to the pedestal.

[0004]

In the case of the prior art, the fixing of the root bowl to the pedestal depends exclusively on the fastening force of the tightening strips, so that a winch for strongly fastening the fastening strips is provided. ing.

However, according to the findings of the present inventor, in the structure which depends only on the fastening force of the tightening strip, when the planted tree receives a strong wind such as a typhoon, the number of the root pots becomes the center. Since a large moment of tonnes is generated, the root pot rotates on the pedestal in the soil due to slippage of the tightening strips, which hinders stable growth of the tree and should the tree tilt. , There is a problem of having to start planting again.

[0006] Usually, after binding the root pot to the pedestal, the soil is backfilled in the planting hole and sprinkled with water so that the winch is not embedded, and after a predetermined period, the winch is fastened again, as can be seen from the above. The root pot shrinks while solidifying with the passage of time, and the fastening force of the tightening strip tends to loosen by this, so when the moment of strong wind as described above is received, the root pot is It is inevitable to slip.

Furthermore, such inclination of trees due to strong winds poses a serious problem especially with respect to rooftop greening. In the case of rooftop greening, since there is a constraint in terms of weight, lightweight soil is used, and anchor bolts are not allowed to be driven, and it is extremely difficult to stably support trees to withstand strong winds.

[0008]

DISCLOSURE OF THE INVENTION The present invention provides a fall prevention device in a tree planting stabilization device which solves the above problems. The first means is that it is a root pot of a tree placed on a pedestal. In a device for fixing to the pedestal with a tightening strip, a plurality of supporting members for supporting the bottom of the root bowl are arranged as one pair facing each other in the diameter direction of the root bowl, and each supporting member is attached to the pedestal. Each supporting member is provided with a locking means for connecting the elastic strips connected to each other through the elastic connecting means having elastic force in both the pulling direction and the compressing direction, and locking the tightening strips fastened to the upper shoulder of the root bowl. There is a point.

According to the second aspect of the present invention, in a device for fixing a root pot of a tree placed on a pedestal to the pedestal with a tightening strip, a plurality of support members for supporting the bottom of the root pot are provided. Are arranged at intervals in the circumferential direction of the root bowl, and each supporting member is provided with locking means for locking the tightening strip to be fastened to the upper shoulder portion of the root bowl. The means is provided with an arm member made of a flexible elastic material that extends outward from the root bowl from a shaft support portion that is pivotally supported around a horizontal axis, and the longitudinal midway portion of the arm member is rotatable with respect to a support means provided on a pedestal. When the support member is pulled up by tightening the tightening strip, the arm member causes the shaft support portion to act as a force point,
A lever having a midpoint in the longitudinal direction as a fulcrum and a distal end of the arm member as an action point pressed against the pedestal constitutes a lever, and the arm member constitutes a fastening force accumulating means between the force point and the fulcrum. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

The pedestal 1 constituting the tree planting stabilizing device is shown in the figure as a frame made of square steel pipes in the shape of a cross, but it may be made of a round pipe. May be framed in a shape other than a cross shape such as a cross shape, that is, a plurality of legs (preferably 4 or more) extending outward from the central portion receiving the root pot 3 of the tree 2 to be planted. Any unit including the unit 4 may be used.

The bottom portion of the root bowl 3 is supported by a supporting member 5, and a plurality of pairs of the supporting members 5 are arranged, one pair facing each other in the diameter direction of the root bowl 3. For example, by framing the frame in a cross shape, the four legs 4
In the pedestal 1 of the illustrated example provided with, four support members 5 are arranged corresponding to the positions above the respective leg portions 4.

As shown in FIG. 2, for example, the support member 5 has a rigid structure in which a reinforcing member 7 is fixed to a ring portion 6 formed by bending a steel wire, and extends along the periphery of the bottom surface of the root pot 3. It is curved. The supporting member 5 may be formed of a metal plate other than the steel wire as shown in the figure. A locking ring 8 formed by bending a steel wire or the like is provided at the lower end edge of the supporting member 5, and the locking ring 8 is bent from the supporting member 5 into a substantially V shape and extends. 8a, a tip horizontal rod 9a connecting the tip ends of the vertical rods 8a, 8a to each other, and an intermediate horizontal rod 9b connecting the vertical rods 8a, 8a to each other at the V-shaped bent portion. .

A locking means 11 formed by bending a steel wire or the like is extended on the upper part of the support member 5, and the locking means 11 is a cylindrical piece 12 fixed to the upper end edge of the support member 5 by welding or the like. 1
It is rotatably attached to 2.

Further, the support member 5 or the locking means 11 is provided with an arm member 13 extending outward of the root bowl 3 so as to be rotatable around a horizontal axis. The arm member 13 is a support means 5.
It may be provided in either of the locking means 11 and the locking means 11, but in the case of the illustrated example,
A shaft support portion 15 made of a tubular material is axially supported by a shaft portion 14 of a locking means 11 inserted into the tubular pieces 12 fixed to the support member 5, and the arm member 13 is attached to the shaft support portion 15. Are fixed by welding or the like. The arm member 13 is
A pressure contact portion 16 made of a flexible elastic material such as a steel wire and bent downward is provided at the tip end portion so as to constitute a fastening force accumulating means described later. The arm member 13 may be formed of two steel wires as shown in the figure, but may be formed of one steel wire, or may be formed of an elongated strip steel or the like. .

Each of the supporting members 5 is connected to the leg portion 4 of the pedestal 1 through elastic connecting means 17 having elastic force in both the tension direction and the compression direction. Elastic connection means 1
In the illustrated embodiment, as shown in FIG. 3, 7 is a telescopic large-diameter cylinder 18a and a small-diameter cylinder 18b in which coil springs 19 are installed, and both ends of the spring 19 have large diameters. The cylinder 18a and the small-diameter cylinder 18b are integrally formed by locking, and are swingably connected between the support member 5 and the leg portion 4. In the case of the illustrated embodiment, a mounting bracket 2 which is slidably and detachably mounted on the reinforcing member 7 of the supporting member 5.
A connection adjusting member 2 in which a bracket 22 of a large-diameter cylinder 18 is rotatably connected to a bracket 21 of 0, and a bracket 23 of a small-diameter cylinder 18b is externally slidably fixed to a leg portion 4 of a pedestal 1.
5 is rotatably connected to the bracket 26. The spring 19 of the elastic connecting means 17 is prepared with different elastic coefficients depending on the size of the root pot 3 to be used.

The arm member 13 is rotatably connected to a support means 27 provided on the leg portion 4 of the pedestal 1 at an intermediate portion in the longitudinal direction. In the case of the illustrated example, the supporting means 27 is the connection adjusting member 2
5 is erected by welding or the like, and the arm member 13 can be inserted into a hole 29 provided in the supporting means 27.

In the case of the illustrated embodiment, as shown in FIG. 2, a connection adjusting member 25 is provided which is composed of one rectangular tube provided with a bracket 26 and a supporting means 27, and the connection adjusting member 25 is provided with legs. Although it is configured to be fixed to the No. 4 by the set bolt 30, the connection adjusting member 25 is divided into the first connecting adjusting member having the bracket 26 and the second connecting adjusting member having the supporting means 27. The connection adjusting member may be independently slidably attached to the leg portion 4.
Further, in the case of the example shown in the figure, the structure is shown in which the stabilizer 32 is fixed to the connection adjusting member 25 located on the tip end side of the leg portion 4.
The stabilizer 32 may be directly fixed to the tip of the leg 4.

When performing tree planting with the above configuration,
The leg portion 4 of the pedestal 1 is inserted into the locking ring 8 so that the front end horizontal rod 9a is positioned above the leg portion 4 and the intermediate horizontal rod 9b is positioned below the leg portion 7. Next, the connection adjusting member 25 is externally inserted into the leg portion 4, the supporting member 5 is connected to the connection adjusting member 25 by the elastic connecting means 17, and the arm member 13 is inserted into the hole 29 of the supporting means 27. In this state, root bowl 3
The connection adjusting member 25 is slid along the leg portion 4 of the pedestal 1 according to the size of the base 1, and the root pot 3 is placed on the support member 5 on the pedestal 1.

Therefore, after fixing the connection adjusting member 25 with the set bolt 30, a pair of supporting members 5 and 5 opposed to each other as a set are sled on the upper shoulder portion of the root bowl 3 via the locking means 11 or the like. The tightening strips 33b and 33c are fastened to each other. Each of the tightening strips 33b and 33c is strongly fastened to the strip 33d hung on the root portion of the tree 2 through a fastening means 34 such as a winch.

By the fastening means 34, the tightening strips 33b, 33
When c is fastened to the upper shoulder portion of the root bowl 3, the support member 5 is pulled up via the locking means 11, and the intermediate lateral rod 9b of the locking ring 8 is attached to the lower surface of the leg portion 4 as shown in FIG. While being pressed, the tip side rod 9a is pressed against the upper surface of the leg portion 4 in the rotating direction of the arrow shown in the figure, and the leg portion 4 is clamped to be fixed. Further, by pulling up the locking means 11, the arm member 13 is rotated until the pressure contact portion 16 at the tip comes into contact with the leg portion 4 (stabil plate 32 in the case of the example). That is, the arm member 13 constitutes a lever having the shaft support portion 15 as a force point F, the portion held in the hole 29 of the supporting means 27 as a fulcrum point P, and the pressure contact portion 16 at the tip as an action point W, and the pressure contact portion 16 is a pedestal. The leg 4 of No. 1 (stabil plate 32 in the illustrated example) is brought into pressure contact. Therefore, when the tightening strips 33b and 33c are continuously tightened even after the pressure contact portion 16 is pressure-contacted to the leg portion 4, as shown in FIG.
As indicated by the chain line, the arm member 13 elastically bends between the fulcrum P and the force point F, whereby the fastening force accumulating means 3
Make up 5. In the case of the illustrated example, the fulcrum P of the lever is constituted by the hole 29 of the support member 27 that holds the arm member 13. However, the fulcrum P is formed by the shaft and the bearing that rotatably support the arm member 13 on the support member 27. The fulcrum P may be configured.

As a result, the root pot 3 is strongly held on the pedestal 1 from the periphery by the arm member 13 and the bottom portion is supported by the support member 5. Then, the support body including the support member 5 for supporting the root bowl 3 and the locking means 11 is the base 1
The press contact portion 16 of the arm 13 is pressed downward against the leg portion 4 of the above, and the intermediate lateral rod 9b of the locking ring 8 is pressed upward, so that the leg portion 4 is firmly sandwiched from above and below to be firm. Fixed to. In this state, the elastic connecting means 17 interposed between the support member 5 and the pedestal 1 is preferably in a neutral state in which the elastic connecting means 17 does not elastically act in either the pulling direction or the compressing direction. Therefore, the mounting bracket 20
The movement along the support member 5 is adjustable as shown by the arrow in FIG. 3, and after confirming the support angle of the elastic coupling means 17 and the neutral state as described above, the mounting bracket 20 can be fixed.

In this way, the tree planting stabilizer in which the root pot 3 is integrated is buried in the soil by backfilling the soil in the planting hole, and the tree planting is completed. Therefore, as shown in FIG.
When the tree 2 receives an external force X1 due to a strong wind or the like, a moment is generated in the root pot 3, and as a result, one of the pair of supporting members 5 and 5 facing each other in the direction of the external force X1 is a supporting member 5b.
The locking means 11b receives a force X2 in the pulling direction by the tightening strip 33b, and the other support member 5c and the locking means 1
1c receives the force X3 in the downward direction by the tightening strip 33c. At this time, with respect to the force X2 in the pulling direction, the intermediate horizontal rod 9b of the locking ring 8 is locked to the lower surface of the leg portion 4 to prevent the root pot 3 from being lifted and separated from the intermediate horizontal rod 9b. In the open position, the elastic force against the pulling direction of the elastic connecting means 17b prevents the support member 5b from being pulled up, and the arm member 13b is bulged to lock the locking means 11b.
Prevent b from being pulled up. On the contrary, the force X in the pushing direction
For 3, the elastic force against the compression direction of the elastic coupling means 17c prevents the support member 5c from being pushed down, and
By releasing the fastening force accumulated in the fastening force accumulating means 35 of the arm member 13c, the tightening strip 33c fastened to the locking means 11b is prevented from loosening. As a result, the root bowl 3 does not rotate on the pedestal 1 as in the conventional case,
Firmly retained in the initial state.

[0024]

According to the present invention as set forth in claim 1, a plurality of pairs of support members 5 for supporting the bottom portion of the root pot 3 are arranged, one pair facing each other in the diametrical direction of the root pot 3 as one set. The support member 5 is connected to the pedestal 1 through elastic connecting means 17 having elastic force in both the pulling direction and the compressing direction, and the tightening strip 33 fastened to the upper shoulder portion of the root bowl 3 is engaged. Since the locking means 11 for stopping is provided on each support member 5, of the pull-up direction force X2 and the push-up direction force X3 generated as a moment in the root pot 3 by the external force X1 received by the tree 2, With respect to the force X2, the elastic force against the pulling direction of the elastic connecting means 17b prevents the support member 5b from being pulled up, and against the force X3 in the pushing down direction, the elastic connecting means 17c resists the compression direction. The support member 5c is pushed down by the elastic force Since impede, without allowed pivot the root ball 3 on the base 1, there is an effect that can be firmly kept in the initial state.

According to the present invention as defined in claim 2,
A plurality of support members 5 for supporting the bottom of the root pot 3 are arranged at intervals in the circumferential direction of the root pot 3, and a lock for locking the tightening strip 33 fastened to the upper shoulder of the root pot 3. In the structure in which the means 11 is provided on each support member 5, an arm member 13 extending outward from the root bowl 3 is provided from a shaft support portion 15 axially supported by the support member 5 or the locking means 11 around a horizontal axis. Support means 2 in which the longitudinal midway portion of the arm member 13 is provided on the base 1.
7, when the support member 5 is pulled up by fastening the elastic strip 33, the arm member 13 causes the shaft support portion 15 to be the force point F, the longitudinal midway portion to be the support point P, and the arm member 13 Point W where the tip of the
Since the arm member 13 forms the fastening force accumulating means 35 between the force point F and the fulcrum P, the external force X1 received by the tree 2 causes a force in the pulling direction in the root pot 3 as a moment. Of the force X2 in the pushing direction and the force X3 in the pushing direction, the locking means 11b is applied to the force X2 in the pulling direction by the tension of the arm member 13b.
Is prevented from being pulled up, and the tightening strip 33c fastened to the locking means 11b is loosened by releasing the fastening force accumulated in the fastening force accumulating means 35 of the arm member 13c against the force X3 in the pushing down direction. To prevent this, root pot 3
There is an effect that it can be firmly held in the initial state without being rotated on the pedestal 1.

[Brief description of drawings]

FIG. 1 is a sectional view showing the whole of one embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a main part of one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a main part of a first embodiment of the present invention in a cutaway manner.

[Explanation of symbols]

1 pedestal 2 trees 3 root bowl 4 legs 5 Support members 11 Locking means 13 Arm member 15 Shaft support 16 Pressure contact part 17 bullet connection means 25 Connection adjustment member 27 Supporting means 29 holes 33 tightening strip 35 Fastening force accumulation means

Claims (2)

(57) [Claims] 1. A device for fixing a root pot of a tree placed on a pedestal to the pedestal with a tightening strip, wherein a plurality of supporting members for supporting the bottom of the root pot are provided as a pair facing each other in the diameter direction of the root pot. In addition to arranging as a set, each supporting member is connected to the pedestal through elastic connecting means having elastic force in both the pulling direction and the compressing direction, and a tightening strip to be fastened to the upper shoulder of the root bowl is connected. A fall prevention device in a tree planting stabilization device, characterized in that each support member is provided with a locking means for locking. 2. A device for fixing a root pot of a tree placed on a pedestal to the pedestal with a tightening strip, wherein a plurality of support members for supporting the bottom of the root pot are arranged at intervals in the circumferential direction of the root pot. Along with this, each supporting member is provided with a locking means for locking the tightening strips fastened to the upper shoulder portion of the root bowl, and the supporting member or the locking means comprises a shaft supporting portion pivotally supported around a horizontal axis. An arm member made of a flexible elastic material extending to the outside of the root bowl is provided, and a middle portion in the longitudinal direction of the arm member is rotatably connected to a support means provided on a pedestal, and the support member is secured by fastening a tightening strip. When the arm member is pulled up, the arm member forms a lever having the shaft support portion as a force point, the longitudinal midway portion as a fulcrum, and the tip end portion of the arm member as an action point pressed against the pedestal. The member constitutes the fastening force accumulating means. Fall prevention device in the planting stabilizer to symptoms.