Tree pit structure provided with construction device for preventing soil balls of border trees from protruding

Abstract

The utility model discloses a tree pit structure provided with a construction device for preventing soil balls of border trees from protruding, the border trees with the soil balls are planted in the tree pit, a planting soil layer is filled in the tree pit, the tree pit is located between a sidewalk paving area and a roadway, and curbstones are arranged on the side, close to the roadway, of the tree pit. A boomerang type construction device is arranged on the upper wall of the inner side of the plant pit, the boomerang type construction device comprises two unequal triangular bodies, each triangular body comprises a short bevel edge and a long bevel edge, the inner sides of the short bevel edges and the long bevel edges are connected, the short bevel edges are located above the soil ball, the long bevel edges are located on the side edge of the soil ball, and the size of the boomerang type construction device is determined according to the size of the plant pit. By means of the boomerang type construction device, damage to sidewalk paving materials and potential safety hazards brought to surrounding pedestrians due to the fact that soil balls protrude out of tree pits along with continuous growth of border trees are effectively avoided, and meanwhile influences on surrounding roadways in the growth process of the border trees are prevented. And the government maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gardening, and particularly relates to a tree pit structure provided with a structural device for preventing soil balls of roadside trees from rising. Background Art

[0002] In the construction of modern garden cities, road greening has become a necessary project for urban construction. People have created various forms of street tree pools, which have different structural forms. At present, the conventional street tree planting structure includes street trees with soil balls and organic planting soil layers from top to bottom. Some of the more exquisite road sections will design special tree grates. The shape and style of street tree planting pools have been constantly updated and changed, but the problem of soil ball bulge has not been solved.

[0003] The traditional street tree planting technology is not much different from the planting technology of other trees. As the trees continue to grow, they become taller and taller, and the dense shade brings coolness to pedestrians. The branches and leaves have made great contributions to reducing urban dust, noise pollution, and preventing the invasion of haze. However, its increasingly strong root structure grows towards the ground because the soil structure around the planting hole becomes increasingly dense. As a result, the sidewalk paving materials are severely damaged and the ground is raised, which brings many inconveniences to pedestrians.

[0004] At present, in order to change the inconvenience caused by the uplift of the ground caused by the growth of street trees, the urban greening service department can only choose to cut off the roots of the plants protruding from the ground and replace the damaged paving materials with new ones. This makes it convenient for pedestrians to pass, but it has a great impact on the growth of plants in the later period; the updated tree grates and paving materials also consume a lot of manpower and financial resources of government departments.

[0005] After searching, the Chinese invention application document with the existing publication number CN117296617A discloses a planting process and a tree pit structure for preventing and controlling root damage of urban roadside trees. The tree pit structure "includes a tree pit boomerang-shaped structure (1) arranged on the side of the sidewalk, the cross section of the tree pit boomerang-shaped structure (1) is square, the tree pit boomerang-shaped structure (1) is filled with soil, the surface of the soil is lower than the ground, the top surface of the soil is provided with a tree pit frame (2), each side of the tree pit frame (2) is provided with a rain collecting plate bracket (3), the top of the rain collecting plate bracket (3) is provided with a tree pit rain collecting plate (4), the tree pit rain collecting plate (4) is provided with a tree hole (5), the tree hole (5) is arranged at the center of the tree pit rain collecting plate (4), the tree pit rain collecting plate (4) is arranged to be concave toward the center, and the diameter of the tree hole (5) is larger than the diameter of the roadside tree; the tree pit boomerang-shaped structure (1) A plurality of ventilation pipes (6) inserted into the soil are installed inside the tree pit, and the plurality of ventilation pipes (6) are respectively located at each corner of the tree pit boomerang-shaped structure (1). "Although the tree pit structure adopts a plurality of measures such as ventilation pipes and tree pit rain collecting plates to reduce the damage to the sidewalk facilities by the roots of the roadside trees, the soil ball bulge is usually caused by the expansion of the soil due to water immersion or the growth and expansion of the tree roots. Although the ventilation pipes in the tree pit structure can reduce the pressure of soil expansion to a certain extent, if the soil quality is poor, the water content is high, or the tree roots are too strong, the soil ball bulge of the roadside tree is still difficult to avoid after a certain growth period; in addition, the design of the rain collecting plate in the tree pit structure may aggravate the problem of soil ball bulge, because it will collect and concentrate a large amount of rainwater, causing the soil to expand rapidly in a short time. Therefore, the tree pit structure has certain limitations. Utility Model Content

[0006] In order to solve the problems existing in the prior art mentioned above, the purpose of the utility model is to provide a tree pit structure equipped with a structural device for preventing the soil ball of street trees from bulging. The utility model device solves the damage to the sidewalk paving materials and the safety hazards to the surrounding pedestrians caused by the soil ball bulging out of the tree pit as the street trees continue to grow. At the same time, the device of the application can prevent the influence of the surrounding vehicle road structure layer during the growth of street trees.

[0007] In order to achieve the above purpose and other related purposes, the utility model adopts the following technical solutions:

[0008] The utility model provides a tree pit structure provided with a structural device for preventing the soil ball of a roadside tree from bulging, wherein a soil ball is provided at the lower end of the roadside tree, the soil ball is planted in the tree pit, the tree pit is filled with a planting soil layer, the tree pit is located between a sidewalk paving area and a roadway, a curb is provided on the side of the tree pit close to the roadway, a boomerang-type structural device is provided at the inner upper wall of the tree pit, the boomerang-type structural device comprises two unequal triangles, the inner side of the boomerang-type structural device comprises a short hypotenuse and a long hypotenuse connected to each other, the short hypotenuse is located above the soil ball, and the long hypotenuse is located on the side of the soil ball, and the size of the boomerang-type structural device is determined according to the size of the tree pit.

[0009] As a preferred technical solution, the boomerang-shaped structural device is embedded in the planting soil layer, and the boomerang-shaped structural device is close to the upper end of the tree hole and fits with the inner wall of the tree hole.

[0010] As a preferred technical solution, there is a gap between the highest point of the short hypotenuse and the upper end surface of the planting soil layer, and the gap is filled with scattered pebbles.

[0011] As a preferred technical solution, the distance from the bottom endpoint of the long hypotenuse to the top surface of the boomerang-shaped structural device is greater than half the depth of the tree hole.

[0012] As a preferred technical solution, the distance from the top endpoint of the short hypotenuse to the outer side surface of the boomerang-shaped structural device is not less than one third of the width of the tree hole.

[0013] As a preferred technical solution, the top surface height of the boomerang-shaped structural device is lower than the top surface height of the sidewalk paving area.

[0014] As a preferred technical solution, the planting soil layer is filled with organic planting soil, and the components of the organic planting soil include organic fertilizer earthworm castings, peat soil, coconut husk, perlite and river sand. Further, the planting soil layer also includes a composite filter layer, which is wrapped around the soil ball and includes slag, activated carbon, volcanic rock and fine sand from the outside to the inside.

[0015] As a further preferred technical solution, the boomerang-shaped structural device is a hollow structure, and a filler is embedded in the interior of the boomerang-shaped structural device, and the filler includes melon seed fragments, crushed stones or permeable concrete.

[0016] As a further preferred technical solution, the boomerang-shaped structural device is made of stainless steel.

[0017] As described above, the utility model has the following beneficial effects:

[0018] (1) The utility model provides a tree pit structure with a structural device for preventing the soil ball of street trees from bulging. The utility model adopts a boomerang-shaped structural design composed of two unequal triangles. When the root system of the soil ball grows with the growth of the street tree, the long hypotenuse of the boomerang is affected by the thrust, which is transmitted to the short hypotenuse of the boomerang to generate pressure in the direction of the soil ball, thereby preventing the soil ball of the street tree from bulging upward, and achieving balance from the effect of mechanics. By adopting a boomerang-shaped structural design composed of two unequal triangles, when the root system of the soil ball expands with the growth of the street tree, the long hypotenuse is affected by the thrust from the soil ball, and the thrust is transmitted to the short hypotenuse through the boomerang-shaped structural structure, generating reverse pressure on the soil ball. This design has the advantages of automatically adapting to the expansion of the soil ball and effectively preventing it from bulging upward. At the same time, it also has the effect of mechanical balance, thereby improving the stability of the soil ball, and can reduce the negative impact of soil bulge on the growth of street trees, thereby optimizing the growth environment of street trees.

[0019] (2) The utility model is a tree pit structure equipped with a structural device for preventing the soil ball of street trees from bulging. By adopting the design of the present application, it can solve the problem that the soil ball of street trees bulges out of the tree pit after they grow to a certain age, causing damage to the sidewalk paving materials and posing a safety hazard to surrounding pedestrians. It can also prevent the impact of street trees on the surrounding road structure layers during their growth. At the same time, it can also reduce the government's renewal of sidewalks and reduce the multiple consumption of manpower, material resources and financial resources.

[0020] (3) The utility model provides a tree pit structure with a structural device for preventing the soil ball of street trees from rising. Through the material selection of the boomerang-shaped structure and the hollow filling design, it can provide street trees with a better growth space, increase the survival rate of street trees, and ensure that the normal growth process of trees is not damaged.

[0021] (4) The utility model provides a tree pit structure with a structural device for preventing the soil ball of street trees from rising. The good water permeability and air permeability of pebbles can ensure the soil moisture after watering, and at the same time provide good ventilation for the soil in the planting soil layer below, preventing the problem of soil waterlogging caused by excessive watering, thereby ensuring the breathing needs of the growing street trees.

[0022] (5) The utility model provides a tree pit structure with a structural device for preventing the soil ball of street trees from rising. By filling the planting soil layer with organic planting soil and providing a composite filter layer, it can not only improve the air permeability and water retention of the soil and prevent the soil from becoming compacted, but also remove harmful substances in the soil, thereby providing a healthy growth environment for plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic diagram of a tree pit structure provided with a structural device for preventing the soil ball of a roadside tree from rising.

[0024] Among them, the specific descriptions of the accompanying drawings are as follows: 1. Street trees; 2. Soil ball; 3. Planting soil layer; 4. Scattered pebbles; 5. Boomerang-shaped structural device; 51. Short hypotenuse; 52. Long hypotenuse; 6. Sidewalk paving area; 7. Curb stone; 8. Driveway. DETAILED DESCRIPTION

[0025] In order to better understand the purpose, structure and function of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of the present invention, it should be noted that the positional relationships indicated by terms such as “longitudinal”, “lateral”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” cited in this specification are based on the positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] Example

[0028] like Figure 1 As shown, this embodiment provides a tree pit structure provided with a structural device for preventing the soil ball of a roadside tree from rising.

[0029] A soil ball 2 is provided at the lower end of the roadside tree 1, and the soil ball 2 is planted in a tree hole, and the tree hole is filled with a planting soil layer 3. The tree hole is located between the sidewalk paving area 6 and the roadway 8, and a curb 7 above the ground is provided on the side of the tree hole close to the roadway 8. The roadside tree 1 can determine the plant variety and the size of the soil ball 2 according to the design requirements. It is a conventional technical means to select the appropriate plant variety of the roadside tree 1 and the corresponding size of the soil ball 2 according to the actual design requirements, which will not be described in detail here.

[0030] A boomerang-shaped structural device 5 is arranged in the tree hole, and the boomerang-shaped structural device 5 is embedded in the planting soil layer 3. The boomerang-shaped structural device 5 is close to the upper end of the tree hole, and the outer wall of the boomerang-shaped structural device 5 is in contact with the inner wall of the tree hole, and the top surface height of the boomerang-shaped structural device 5 is lower than the top surface height of the sidewalk paved area 6, so that space for setting a tree grate is reserved on the top surface of the boomerang-shaped structural device 5.

[0031] The boomerang-shaped structural device 5 is composed of two unequal triangles to form a boomerang-shaped structure. The boomerang-shaped structural device 5 includes a short hypotenuse 51 and a long hypotenuse 52. The short hypotenuse 51 and the long hypotenuse 52 are connected on the inner side of the boomerang-shaped structural device 5. The short hypotenuse 51 is located above the soil ball 2, and the long hypotenuse 52 is located on the side of the soil ball 2.

[0032] There is a gap between the highest point of the short hypotenuse 51 and the upper end surface of the planting soil layer 3, and the gap is filled with scattered pebbles 4. The good water permeability and air permeability of the pebbles can ensure the soil moisture after watering, and at the same time, it is beneficial to provide good ventilation for the soil in the planting soil layer 3 below, prevent the problem of soil water accumulation caused by excessive watering, and thus ensure the breathing needs of the growing street trees 1. A drainage slope is provided between the boomerang-shaped structural device 5 and the curbstone 7 on one side of the roadway 8, and scattered pebbles 4 are also laid on the drainage slope.

[0033] The size of the boomerang-shaped structural device 5 is determined according to the size of the tree hole. Specifically, the distance from the bottom end point of the long hypotenuse 52 to the top surface of the boomerang-shaped structural device 5 is greater than half of the depth of the tree hole, and the distance from the top end point of the short hypotenuse 51 to the outer surface of the boomerang-shaped structural device 5 is not less than one-third of the width of the tree hole. In actual work, as the street tree 1 grows, the root system of the soil ball 2 will grow. When the root system of the soil ball 2 contacts the long side of the boomerang-shaped structural device 5, the thrust generated by the root system of the soil ball 2 is transmitted to the long hypotenuse 52 of the boomerang-shaped structural device 5, so that the short hypotenuse 51 of the boomerang-shaped structural device 5 generates reverse pressure on the soil ball 2, and then uses the principle of mechanical balance to prevent the soil ball 2 of the street tree 1 from bulging upward.

[0034] The planting soil layer 3 is filled with organic planting soil. The main component of the organic planting soil is pure natural organic fertilizer earthworm castings as a matrix, and is refined with the addition of high-quality peat soil, coconut bran, perlite, river sand and other materials. It has good physical and chemical properties, and has the characteristics of loose structure, good drainage and ventilation, and strong water and fertilizer retention capabilities. It is not only clean, hygienic, and odorless, but also can improve the soil, kill bacteria and inhibit soil-borne diseases, so that the plant roots grow vigorously.

[0035] The planting soil layer 3 also includes a composite filter layer, which is wrapped around the soil ball 2. The composite filter layer includes slag, activated carbon, volcanic rock and fine sand from the outside to the inside. It can not only improve the air permeability and water retention of the soil and prevent the soil from becoming compacted, but also remove harmful substances in the soil and provide a healthy growth environment for plants.

[0036] In order to ensure the good growth state of the street trees 1, the durability and adaptability to the environment need to be fully considered when selecting the material and designing the structure of the boomerang-type structural device 5. On the one hand, the material of the boomerang-type structural device 5 should avoid using high molecular polymer materials such as PVC, PE, PP, etc. This is because high molecular polymer materials generally have the problems of insufficient heat resistance, high thermal expansion coefficient, and easy combustion; in addition, high molecular polymer materials have poor dimensional stability and are easy to deform; most high molecular polymer materials have poor low temperature resistance and are easy to become brittle and age in low temperature environments; some high molecular polymer materials are also easy to dissolve in solvents. If these potential problems are not strictly scientifically managed, they may cause pollution to the soil, water quality, etc. Once the soil is diseased, it will have a direct adverse effect on the normal growth of plants. On the other hand, the design of the boomerang-shaped structural device 5 should avoid using a solid design. This is because a solid design is not only too expensive, which will lead to a significant increase in manufacturing costs, but also because a solid design is not conducive to the growth and development of the street trees 1. It may limit the growth space of the trees, affect the expansion of the root system and the absorption of nutrients, and thus indirectly affect the health and growth status of the street trees 1.

[0037] Therefore, in this embodiment, the material of the boomerang-shaped structural device 5 is made of stainless steel, which is customized and processed from stainless steel. Specifically, 304 stainless steel is used for combination and construction. The fixed connection between the two unequal triangles of the boomerang-shaped structure is welded; and the boomerang-shaped structural device 5 adopts a hollow design, and the interior of the boomerang-shaped structural device 5 is embedded with fillers, and the fillers include but are not limited to melon seed pieces and gravel or permeable concrete. Among them, 304 stainless steel material is a grade of stainless steel produced according to the ASTM standard of the United States. As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; and 304 stainless steel material has excellent performance in hot processing such as stamping and bending, has no heat treatment hardening phenomenon, and shows good corrosion resistance in the atmosphere. It is widely used in the fields of industry, furniture decoration, food and medical treatment; at the same time, 304 stainless steel material has high recyclability and can be recycled and used many times, which is extremely beneficial to environmental protection. Therefore, by adopting stainless steel material and hollow structural design, it is possible to ensure the overall structural strength of the boomerang-shaped structural device 5 while ensuring the permeability of the tree hole structure.

[0038] The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. It is known to those skilled in the art that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.

Claims

1. A tree pit structure provided with a structural device for preventing soil balls of roadside trees from rising, wherein a soil ball (2) is provided at the lower end of the roadside tree (1), the soil ball (2) is planted in the tree pit, the tree pit is filled with a planting soil layer (3), the tree pit is located between a sidewalk paving area (6) and a roadway (8), and a curb stone (7) is provided on the side of the tree pit close to the roadway (8), characterized in that: A boomerang-shaped structural device (5) is arranged on the inner upper wall of the tree hole. The boomerang-shaped structural device (5) comprises two unequal triangles. The inner side of the boomerang-shaped structural device (5) comprises a short oblique side (51) and a long oblique side (52) connected to each other. The short oblique side (51) is located above the soil ball (2), and the long oblique side (52) is located on the side of the soil ball (2). The size of the boomerang-shaped structural device (5) is determined according to the size of the tree hole.

2. A tree pit structure provided with a structural device for preventing the soil ball of a roadside tree from rising according to claim 1, characterized in that: The boomerang-shaped structural device (5) is embedded in the planting soil layer (3); the boomerang-shaped structural device (5) is close to the upper end of the tree hole and fits with the inner wall of the tree hole.

3. The tree pit structure provided with a structural device for preventing the soil ball of roadside trees from rising according to claim 1, characterized in that: There is a gap between the highest point of the short oblique side (51) and the upper end surface of the planting soil layer (3), and the gap is filled with scattered pebbles (4).

4. The tree pit structure provided with a structural device for preventing the soil ball of roadside trees from rising according to claim 1, characterized in that: The distance from the bottom end point of the long hypotenuse (52) to the top surface of the boomerang-shaped structural device (5) is greater than half of the depth of the tree hole.

5. The tree pit structure provided with a structural device for preventing the soil ball of roadside trees from rising according to claim 1, characterized in that: The distance from the top end point of the short oblique side (51) to the outer side surface of the boomerang-shaped structural device (5) is not less than one third of the width of the tree hole.

6. The tree pit structure provided with a structural device for preventing the soil ball of roadside trees from rising according to claim 1, characterized in that: The top surface height of the boomerang-shaped structural device (5) is lower than the top surface height of the sidewalk paving area (6).

7. The tree pit structure provided with a structural device for preventing the soil ball of roadside trees from rising according to claim 1, characterized in that: The planting soil layer (3) is filled with organic planting soil, and the components of the organic planting soil include organic fertilizer earthworm castings, peat soil, coconut husk, perlite and river sand.

8. The tree pit structure provided with a structural device for preventing the soil ball of roadside trees from rising according to claim 7, characterized in that: The planting soil layer (3) also includes a composite filter layer, which is wrapped around the soil ball (2), and the composite filter layer includes slag, activated carbon, volcanic rock and fine sand from the outside to the inside.

9. A tree pit structure provided with a structural device for preventing soil balls of roadside trees from rising according to any one of claims 1 to 8, characterized in that: The boomerang-shaped structural device (5) is a hollow structure, and a filler is embedded inside the boomerang-shaped structural device (5), wherein the filler comprises melon seed fragments, crushed stones or permeable concrete.

10. A tree pit structure provided with a structural device for preventing the soil ball of a roadside tree from rising according to claim 9, characterized in that: The material of the boomerang-shaped structural device (5) includes stainless steel.

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