JP5631245B2 - Tree growth protection unit - Google Patents

Description

  The present invention relates to a growth protection unit for protecting the growth of various trees such as windproof trees installed as a countermeasure against wind from buildings against strong winds.

  In general, strong wind regions (building winds) that occur locally in the vicinity of a high-rise building are predicted and evaluated in advance by wind tunnel experiments and airflow analysis at the planning stage of the high-rise building. Devised and verified.

  In many cases, the above-mentioned measures against wind are taken by trees (Takagi and evergreen trees). The arrangement and number of trees are examined by experiments and reflected in the plan and design. Such a windproof tree has its height and crown scale determined based on experiments at the planning stage and the like, and when the growth is insufficient, a desired windproof effect cannot be obtained.

However, the above windproof trees are often in an ungrown state at the time of completion, and there are many cases in which the windbreak trees fail to grow due to the influence of strong winds and the like over the years.
In particular, direct causes of growth hindering include leaf scattering and branch collapse due to strong winds, root cutting and growth failure due to tree shaking.

On the other hand, the problem of the wind environment in urban areas has recently been regarded as important by both business operators, local governments and neighboring residents, and it is an important issue to maintain the windbreak effect of trees.
Therefore, for example, in Patent Document 1 below, a tree protection device that protects trees and suppresses winds such as building winds, and is installed on the ground so as to surround the lower part of the trunk of the tree. And a main body portion that is removably attached to the upper portion of the leg portion, has a hollow center, and has a plurality of outer shells having a gap that allows daylighting and ventilation, and the tree is inside the main body portion. There has been proposed a tree protection device including an upper portion of a trunk and a windproof portion for storing a branch.

  And according to the said tree protection apparatus, since the upper part and branch of a tree trunk are stored inside the main-body part in a windbreak part, the lower part of the planted tree trunk is enclosed by a leg part. And since the part above a trunk and the part of a branch can be surrounded by a windbreak part, there exists an effect that a planted plant can be protected until it grows large immediately after planting.

JP 2007-274777 A

  However, in the conventional tree protection device having the above-described configuration, the main body portion of the windbreak portion is formed to have a size that can accommodate the upper part and branches of the tree trunk until it grows large immediately after its planting. Therefore, especially immediately after planting, the size of the windbreak portion becomes extremely large relative to the size of the trees.

  For this reason, in a certain period after planting, the apparatus becomes excessively large and hinders passage, and if the planting interval is close, adjacent objects interfere with each other. In addition, a plurality of outer shells that surround the trunks and branches of the tree in a spherical shell shape at positions spaced outwardly become unbalanced artificial structures with respect to the trees and are not aesthetically preferable. In particular, when the tree is considered as an element for producing a natural landscape as a site plan, there is a problem that the surrounding landscape is also damaged.

  The present invention has been made in view of the above circumstances, has a simple structure, targets undeveloped or undergrown trees, protects them from strong winds, and promotes healthy growth and maintains a predetermined windbreak effect. It is another object of the present invention to provide a tree growth protection unit that is excellent in landscape.

In order to solve the above-described problem, the tree growth protection unit according to the present invention described in claim 1 includes a plurality of struts arranged along the extending direction of the trunk at a plurality of locations surrounding the trunk of the tree, a fixing unit for fixing the strut on the ground, and a connecting member for free standing above ground the plurality of supports by the fixing unit by connecting the struts adjacent to each other, detachably attached to the pillar, growth It is characterized by comprising the above-mentioned tree branches and branches and leaves of an artificial tree having a form similar to the leaves that will grow from the branches in the future .

According to a second aspect of the present invention, in the first aspect of the invention, the fixing portion is formed integrally with the support column, and one end portion is connected to the lower end portion of the support column and the A horizontal fixing portion that extends in a direction away from the support column along the ground, and an anchor portion that is bent at the other end of the horizontal fixing portion and is driven into the ground. .

  The tree growth protection unit according to claim 1 or 2, wherein a plurality of support columns are arranged so as to surround a tree trunk and fixed to the ground by a fixing portion, and adjacent support columns are connected by a connecting member. By supporting the trunk of the tree on which external forces such as strong winds work without being stressed by the above pillars without causing stress to the tree body, Protect and realize healthy growth.

  In addition, since the plurality of columns are arranged along the extending direction so as to surround the trunk of the tree, the outer shape at the time of installation becomes equivalent to that of the tree, and further to the column. Since it has branches and leaves made of artificial trees, it does not hinder the scenery in the space that produces nature.

  Moreover, since the outer shape at the time of installation is equivalent to that of trees, it is possible to obtain a windproof effect that is required as a building wind countermeasure technology at the planning stage. Further, it is possible to relatively easily cope with changing the number of branches and leaves by the support posts and the artificial tree according to the growth of the trees, or connecting the adjacent support posts by the connecting members.

  In this case, in particular, according to the invention described in claim 2, the lower end portion of the support column is provided with a horizontal fixing portion extending in a direction away from the support column along the ground, and the end of the horizontal fixing portion is provided on the ground surface. Since the anchor portion to be placed is formed, in a plan view, a plurality of horizontal fixing portions extend radially from the plurality of support columns unitized by the connecting member, and are fixed to the ground at each tip portion. ing. For this reason, it is possible to effectively resist the horizontal force acting on the column by increasing the self-supporting strength of the entire unit while the outer shape is equivalent to the tree.

It is a front view showing one embodiment of a tree growth protection unit according to the present invention. It is a perspective view of the principal part of FIG. FIG. 2 is a view corresponding to line AA in FIG. 1.

  FIGS. 1 to 3 show an embodiment in which the tree growth protection unit according to the present invention is applied to the protection of an undeveloped windproof tree having a branch b on a trunk t immediately after planting. The protection unit includes a plurality of (four or six in FIG. 3) support columns 1 arranged in the extending direction (vertical direction) along the tree trunk t, and a fixing unit 2 that fixes the support columns 1 to the ground G. And a connecting member 3 that connects adjacent struts 1 and a branch 4 made of an artificial tree provided on the strut 1.

  Here, each of the plurality of support columns 1 is formed in a length dimension extending from the lower end portion thereof to the upper side, adjacent to the outer periphery of the trunk t, and is arranged at substantially equal intervals in the circumferential direction. Yes. And the said fixing | fixed part 2 is formed in the lower end part of each support | pillar 1 integrally.

  The fixing portion 2 is formed by bending the lower end portion of the support column 1 by approximately 90 °, thereby forming a horizontal fixing portion 5 extending along the ground G and a bending portion of approximately 90 ° at the tip of the horizontal fixing portion 5. The anchor portion 6 is formed. The plurality of struts 1 are erected by positioning the respective horizontal fixing portions 5 in a direction away from the struts 1 in the radially outward direction and driving each anchor portion 6 into the ground G. ing.

  Further, the adjacent pillars 1 are connected to each other and unitized by connecting members 3 horizontally mounted at a plurality of locations (three locations in FIG. 1) in the height direction. Thereby, the plurality of pillars 1 are arranged on the ground G in a self-supporting state so as to surround the trunk t by the horizontal fixing part 5 and the anchor part 6.

  Moreover, the said branches and leaves 4 by the artificial tree are each provided in the outer peripheral part of each support | pillar 1 and the several position spaced apart in the height direction. Incidentally, as the branches and leaves 4 of these artificial trees, those having a form similar to the branch b of the above-mentioned grown tree and the leaves grown from the branch b in the future are selected.

  According to the tree growth protection unit having the above-described configuration, a plurality of support columns 1 are arranged so as to surround the tree trunk t, and are fixed to the ground G by the fixing portion 2, and the adjacent support columns 1 are connected to each other. Since it is connected and united by the member 3 to be independent on the ground G, it is not grown or grown by supporting the trunk t of the tree to which external force such as strong wind acts without supporting the tree body with stress. Healthy trees can be nurtured by protecting deficient trees.

  In addition, since the plurality of support columns 1 are arranged along the upper part from the lower part so as to surround the tree trunk t, the outer shape at the time of installation becomes equal to that of the tree, and further the support columns Since the branches 1 and 4 of the artificial tree approximated to the branches b and the leaves of the grown tree 1 are provided in 1, the landscape is not hindered in a space that produces nature.

  And since the external shape at the time of installation is equivalent to a tree, the wind-proof effect as a required building wind countermeasure technique can be acquired. In addition, a flexible response can be made according to the growth state of the tree, such as an increase in the number of struts 1 according to the growth of the trunk t (FIG. 3), a decrease in artificial trees due to the growth of the trees, and the connection between adjacent struts 1 Is possible.

  Further, in particular, a horizontal fixing portion 5 extending in a direction away from the support column 1 along the ground is provided at the lower end portion of the support column 1, and an anchor portion 6 to be placed on the ground G is provided at an end portion of the horizontal fixing portion 5. As shown in FIG. 3, in the plan view, a plurality of horizontal fixing portions 5 extend radially from the plurality of support posts 1 unitized by the connecting member 3 in the plan view. The anchor 6 is fixed to the ground G. For this reason, it is possible to effectively resist the horizontal force acting on the support column 1 by increasing the self-supporting strength of the entire unit while the outer shape is equivalent to that of a tree.

  In the above embodiment, the case where the tree growth protection unit according to the present invention is used only for protection of windproof trees has been described. However, the present invention is not limited to this, and the tree is not grown or has failed to grow. It can also be applied in the same way when various trees in are protected from strong winds and grow healthy. Moreover, not only the support | pillar 1 shown in the said embodiment and the branches and leaves 4 of the artificial tree provided in this but this invention makes the said support | pillar 1 resemble the trunk of an artificial tree, and this and the branches and leaves 4 are formed integrally. The use of artificial trees is also included, and according to this configuration, the design can be further improved.

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Fixed part 3 Connecting member 4 Branches and leaves by artificial tree 5 Horizontal fixed part 6 Anchor part t Tree trunk G Ground

Claims (2)

A plurality of pillars arranged along the extending direction of the trunk at a plurality of locations surrounding the trunk of the tree, a fixing portion for fixing the pillars to the ground, and the plurality of pillars by connecting the adjacent pillars to each other. A connecting member that causes the supporting column to stand on the ground by the fixing portion, and a branch and leaf by an artificial tree that is detachably provided on the supporting column and that is similar to the grown tree branch and the leaf that will grow from the branch in the future A tree growth protection unit characterized by comprising: The fixing portion is formed integrally with the support column, and one horizontal end portion is connected to the lower end portion of the support column and extends in a direction away from the support column along the ground, and the horizontal fixing portion 2. The tree growth protection unit according to claim 1, further comprising an anchor portion that is bent at the other end portion and driven into the ground.

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