A green sponge type tree pool

By designing a green sponge-type tree pit, the problems of soil compaction and high maintenance costs after tree planting are solved. It enables the tree roots to absorb water and nutrients in a balanced manner, improves soil activity and prevention and control effects, and reduces maintenance frequency and costs.

CN119866828BActive Publication Date: 2026-07-31THE SEVENTH ENGINEERING CO LTD OF CCCC FIRST HIGHWAY ENGINEERING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE SEVENTH ENGINEERING CO LTD OF CCCC FIRST HIGHWAY ENGINEERING CO LTD
Filing Date
2025-01-14
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

After the construction of urban street trees, during the planting and maintenance process, the surface soil becomes compacted, the water permeability of the maintenance water is weakened, the water storage capacity of the tree pit decreases, frequent maintenance is required and the cost is high, and the existing tree protection board has a simple structure, limited function and is difficult to clean.

Method used

Design a greening sponge-type tree pit, which includes the tree pit body, splicing shell, tree protection blocks, coarse sand filter layer, seepage nozzles, water pipes, rotating rods and soil turning boards, etc., to achieve balanced absorption of water and nutrients by the roots, precise application of pesticides, and soil turning to improve microbial activity.

Benefits of technology

This ensures that tree roots absorb water and nutrients evenly, improves the effectiveness of pest and disease control, enhances soil aeration and water retention, and reduces maintenance frequency and costs.

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Abstract

This invention relates to the field of tree planting technology and discloses a greening sponge-type tree pit, including a tree pit body. Multiple spliced ​​shells are placed around the inner walls of the tree pit body, and multiple tree-protecting blocks are installed inside the spliced ​​shells. A coarse sand filter layer is located inside the tree pit body and below the spliced ​​shells, and soil mixed with organic fertilizer is located below the coarse sand filter layer. This invention ensures balanced absorption of nutrients and water by the tree roots during tree growth, reduces the overall maintenance frequency, improves maintenance effectiveness, and allows direct irrigation to the tree roots, ensuring sufficient and appropriate water for the trees. When trees encounter pests and diseases, pesticides can be applied directly to the tree roots for precise application and improved control effects. The tree pit also has a soil-turning function, which can greatly increase the air and moisture content in the soil, improve the activity of soil microorganisms, and enhance the soil's ability to retain fertilizer and water.
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Description

Technical Field

[0001] This invention relates to the field of tree planting technology, specifically to a greening sponge-type tree pit. Background Technology

[0002] In recent years, with the rise of the concepts of green city and sponge city construction, more municipal greening projects have begun to explore solutions for building "sponge cities" by combining various specific technologies to construct water ecological infrastructure across scales and starting from ecosystem services.

[0003] Currently, during the maintenance process after the planting of urban street trees, the surface soil becomes compacted after a period of time, greatly reducing the water permeability and the water storage capacity of the tree pits. This necessitates reducing the amount of water used for each maintenance session and increasing the frequency of maintenance to ensure the trees' water needs are met. This results in significant maintenance costs and limited effectiveness. Furthermore, existing tree protection panels have a simple structure and limited functions, failing to provide comprehensive protection for the trees. For example, using cast iron grates as tree pit protection panels, with permeable and breathable holes and tree stump holes, can easily trap urban waste, requiring dedicated sanitation workers for cleaning, which is quite difficult. Summary of the Invention

[0004] The purpose of this invention is to provide a greening sponge-type tree pit to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a greening sponge-type tree pit, comprising a tree pit body, wherein multiple splicing shells are placed around the inner wall of the tree pit body, and multiple tree protection blocks are installed inside the splicing shells; a coarse sand filter layer is provided inside the tree pit body and below the splicing shells; soil mixed with organic fertilizer is provided below the coarse sand filter layer; installation pipes are provided on both the left and right sides inside the tree pit body, and multiple seepage nozzles are fixed on the surface of the opposite side of the installation pipes; the installation pipes are located away from the seepage nozzles. A water pipe is connected to one side of the head, which passes through the tree pit body and extends to the top of the tree pit body. The lower half of the water pipe is a retractable flexible hose. Sealing boxes are fixed on the left and right sides of the top of the tree pit body and above the water pipe. An adjustment structure is movably connected to the surface of one side of the installation pipe. Rotating rods are rotatably connected to the top of the front and rear sides inside the tree pit body. Soil turning plates are fixed to the surface of the rotating rods. A cavity is opened inside the tree pit body and on the left side of the rotating rods. A driving structure is movably connected inside the cavity.

[0006] Preferably, the tree protection block is made of polyurethane, and the splicing shell is made of fiberglass.

[0007] Preferably, the bottom of the splicing shell is fixed with multiple support blocks, and the support blocks are arranged at the four corners of the bottom of the splicing shell.

[0008] Preferably, the adjustment structure includes a chute, a slider, and a connecting rod. The chute is located on the front and rear sides of the left and right sides of the inner wall of the tree pit body. The slider is slidably connected inside the chute. The connecting rod is hinged to the surface of one side of the slider, and the other end of the connecting rod is hinged to the surface of the mounting tube. The connecting rod is inclined as a whole.

[0009] Preferably, a positioning block is fixed on one side of the slider, and the positioning block is slidably connected to the inner wall of the slide groove. A positioning bolt is provided through one side of the positioning block, and the positioning bolt is slidably connected to the positioning block. A plurality of positioning holes are provided on one side of the inner wall of the slide groove, and the positioning bolt is threadedly connected to the inner wall of the positioning hole.

[0010] Preferably, a first filter screen is embedded in the top of the sealed box, and a second filter screen is fixed in the lower part of the interior of the sealed box, wherein the pore diameter of the filter screen on the surface of the first filter screen is larger than the pore diameter of the filter screen of the second filter screen.

[0011] Preferably, the drive structure includes a first bevel gear, a connecting shaft, a rotating rod, a second bevel gear, and a knob. The first bevel gear is rotatably connected to the lower left side of the inner wall of the cavity. The connecting shaft is fixed to the right side of the first bevel gear, and the right end of the connecting shaft passes through the tree pit body and is fixedly connected to the left end of the rotating rod. The rotating rod is located above the inside of the cavity, and the top end of the rotating rod passes through to the top of the tree pit body. The second bevel gear is fixed to the bottom end of the rotating rod, and the second bevel gear meshes with the first bevel gear. The knob is fixed to the top end of the rotating rod.

[0012] Preferably, a shield is fixed to the front and back of the top left side of the tree pool body, and the shield is located above the knob.

[0013] Preferably, there are several soil-turning plates, and the soil-turning plates are arranged in a triangular shape, with the soil-turning plates distributed in a ring on the left and right sides of the rotating rod surface.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] This invention provides a greening sponge-type tree pit. On one hand, the water pipe and the sealed box fixed above it ensure balanced absorption of nutrients and water by the roots during tree growth. Water can be directly applied to the tree's root zone, ensuring sufficient and appropriate moisture. When trees are affected by pests or diseases, pesticides can be applied directly to the roots for precise application, improving control effectiveness and ensuring balanced nutrient and water absorption by the roots during tree growth. On the other hand, the soil-turning plate fixed to the surface of the rotating rod can agitate the soil in the tree pit, increasing the air and moisture content, enhancing the activity of soil microorganisms, and improving the soil's ability to retain fertilizer and water. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional schematic diagram of the tree pool body in this invention;

[0018] Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 This is a three-dimensional schematic diagram of the spliced ​​shell in this invention;

[0020] Figure 5 This is a three-dimensional schematic diagram of the spliced ​​shell in this invention;

[0021] Figure 6 This is a cross-sectional view of the main body of the tree pit in this invention;

[0022] Figure 7 For the present invention Figure 6 A magnified view of a section at point B in the middle;

[0023] Figure 8 This is a three-dimensional schematic diagram of the mounting tube in this invention.

[0024] In the diagram: 1. Tree pit main body; 2. Splicing shell; 3. Tree protection block; 4. Coarse sand filter layer; 5. Installation pipe; 6. Water seepage nozzle; 7. Water pipe; 8. Sealing box; 9. Adjustment structure; 91. Slide groove; 92. Sliding block; 93. Connecting rod; 10. Rotating rod; 11. Soil turning plate; 12. Cavity; 13. Drive structure; 131. First bevel gear; 132. Connecting shaft; 133. Rotating rod; 134. Second bevel gear; 135. Knob; 14. Support block; 15. Positioning block; 16. Positioning bolt; 17. Positioning hole; 18. First filter screen; 19. Second filter screen; 20. Shelter frame. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-8 As shown, a greening sponge-type tree pit includes a tree pit body 1. Multiple spliced ​​shells 2 are placed around the inner walls of the tree pit body 1, and multiple tree-protecting blocks 3 are installed inside the spliced ​​shells 2. A coarse sand filter layer 4 is located inside the tree pit body 1 and below the spliced ​​shells 2. Soil mixed with organic fertilizer is placed below the coarse sand filter layer 4. Installation pipes 5 are installed on both the left and right sides of the tree pit body 1, and multiple seepage nozzles 6 are fixed to the surface of the opposite side of the installation pipes 5. A water pipe 7 is connected to the side of the installation pipes 5 away from the seepage nozzles 6. A water pipe 7 passes through the tree pit body 1 and extends to the top of the tree pit body 1. The lower half of the water pipe 7 is a retractable flexible hose. Sealing boxes 8 are fixed on the left and right sides of the top of the tree pit body 1 and above the water pipe 7. An adjustment structure 9 is movably connected to the surface of one side of the installation pipe 5. Rotating rods 10 are rotatably connected to the top of the front and rear sides inside the tree pit body 1. A soil turning plate 11 is fixed to the surface of the rotating rod 10. A cavity 12 is opened inside the tree pit body 1 and on the left side of the rotating rod 10. A drive structure 13 is movably connected inside the cavity 12.

[0027] This invention provides a greening sponge-type tree pit. On one hand, the water pipe 7 and the sealed box 8 fixed above the water pipe 7 ensure balanced absorption of nutrients and water by the roots during tree growth. Water can be directly applied to the rootstock of the tree to ensure that the tree receives sufficient and appropriate water. When the tree is affected by pests or diseases, pesticides can be applied directly to the roots for precise application, improving the control effect and ensuring balanced absorption of nutrients and water by the roots during tree growth. On the other hand, the soil turning plate 11 fixed to the surface of the rotating rod 10 can turn the soil in the tree pit, increasing the air and moisture content in the soil, improving the activity of microorganisms in the soil, and enhancing the soil's ability to retain fertilizer and water.

[0028] The tree protection block 3 is made of polyurethane, and the splicing shell 2 is made of fiberglass. Multiple support blocks 14 are fixed to the bottom of the splicing shell 2, and the support blocks 14 are set at the four corners of the bottom of the splicing shell 2. The thickness of the tree protection block 3 is 32mm, while the thickness of the coarse sand filter layer 4 below is 30mm. The tree protection block 3 absorbs and evenly releases natural rainfall and maintenance water, and at the same time can form a complete seal on the surface of the tree pit, reducing garbage accumulation and improving the urban environment. The setting of the support blocks 14 can create a certain gap between the splicing shell 2 and the coarse sand filter layer 4, thereby increasing the soil permeability.

[0029] The adjustment structure 9 includes a slide groove 91, a slider 92, and a connecting rod 93. The slide groove 91 is located on the front and rear sides of the left and right sides of the inner wall of the tree pit body 1. The slider 92 is slidably connected inside the slide groove 91. The connecting rod 93 is hinged to one side of the surface of the slider 92, and the other end of the connecting rod 93 is hinged to the surface of the mounting tube 5. The connecting rod 93 is inclined as a whole. A positioning block 15 is fixed to one side of the surface of the slider 92, and the positioning block 15 is slidably connected to the inner wall of the slide groove 91. A positioning bolt 16 is provided through one side of the positioning block 15, and the positioning bolt 16 is slidably connected to the positioning block 15. Multiple positioning holes 17 are provided on one side of the inner wall of the slide 91, and the positioning bolts 16 are threadedly connected to the inner wall of the positioning holes 17. When the sliders 92 on both sides are pulled, the sliders 92 will pull the connecting rod 93 to move, so that the connecting rod 93 drives the installation tube 5 to move and adjust the position of the installation tube 5. The position of the installation tube 5 is adjusted according to the size of the root of the planted tree. After the position of the installation tube 5 is adjusted, the staff can pass the positioning bolts 16 through the positioning block 15 and insert them into the corresponding positioning holes 17 to complete the fixing operation of the position of the installation tube 5.

[0030] A first filter screen 18 is embedded in the top of the sealed box 8, and a second filter screen 19 is fixed inside the lower part of the sealed box 8. The pore size of the filter screen 18 is larger than that of the filter screen 19. When rainwater falls on the sealed box 8, the first filter screen 18 can perform preliminary filtration of the rainwater, and the second filter screen 19 can further filter the rainwater. The filtered rainwater will enter the water pipe 7 below and directly irrigate the tree roots through the water spray nozzle 6 on the surface of the installation pipe 5.

[0031] The drive structure 13 includes a first bevel gear 131, a connecting shaft 132, a rotating rod 133, a second bevel gear 134, and a knob 135. The first bevel gear 131 is rotatably connected to the lower left side of the inner wall of the cavity 12. The connecting shaft 132 is fixed to the right side of the first bevel gear 131, and the right end of the connecting shaft 132 passes through the tree pit body 1 and is fixedly connected to the left end of the rotating rod 10. The rotating rod 133 is located above the interior of the cavity 12, and the top end of the rotating rod 133 extends to the top of the tree pit body 1. The second bevel gear 134 is fixed to the bottom end of the rotating rod 133, and the second bevel gear 134 is connected to the first bevel gear 135. The bevel gears 131 mesh with each other, and the knob 135 is fixed to the top of the rotating rod 133. The front and rear sides of the top left side of the tree pit body 1 are both fixed with a shield 20, and the shield 20 is located above the knob 135. When the staff maintains the trees, the staff can rotate the knob 135 on the left side, which will cause the knob 135 to drive the rotating rod 133 to rotate. The second bevel gear 134 drives the first bevel gear 131 to rotate, which causes the connecting shaft 132 to drive the entire rotating rod 10 to rotate, so that the soil turning plate 11 can turn the soil, which can loosen the soil and increase the soil's aeration and water permeability.

[0032] There are several soil turning boards 11, and the soil turning boards 11 are arranged in a triangular shape. The soil turning boards 11 are distributed in a ring on the left and right sides of the surface of the rotating rod 10. When the rotating rod 10 rotates, the soil turning boards 11 will turn over the surrounding soil, making it easier for the roots of the planted trees to breathe and absorb water. Moreover, turning over the soil can also break up the hardened layer in the soil, improve the physical structure of the soil, and provide a better soil environment for the growth of trees.

[0033] Working principle: When workers are constructing, they dig a pit of appropriate size according to the size of the tree pit body 1 at the construction location, then place the tree pit body 1 into the pit. The workers then place the trees to be planted into the tree pit body 1. At this time, the workers adjust the positions of the installation pipes 5 on the left and right sides according to the size of the trees being planted, so that the installation pipes 5 are located on both sides of the tree's rootstock. The workers fill the tree pit body 1 with soil, which needs to be mixed with organic fertilizer. Then, a coarse sand filter layer 4 is laid on top of the soil. The coarse sand filter layer 4 uses sand with a fineness modulus of 3.7-3.1 and an average particle size of 1mm-0.5mm, and the sand is washed and dried. Then, the workers take out the splicing shell 2 and lay it around the trees on top of the coarse sand filter layer 4, thus completing the greening process. During the installation and operation of the sponge-type tree pit, the tree protection block 3 absorbs and evenly releases water during natural rainfall and maintenance, ensuring the balanced absorption of nutrients and water by the roots during tree growth. When staff water the tree, the water flows above the sealed box 8 and enters the water pipe 7. The water spray nozzle 6 on the surface of the installation pipe 5 discharges the water, directly irrigating the roots of the tree. When the tree is affected by pests or diseases, staff can pour pesticides directly into the sealed box 8, allowing the pesticides to act directly on the roots of the tree, improving the treatment effect. When maintaining the tree, staff can also rotate the knobs 135 on both sides, which causes the rotating rod 10 to drive the soil turning plate 11 to rotate. The soil turning plate 11 turns the soil, loosens the soil, and makes it easier for the roots to breathe and absorb water.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A green sponge type tree pit comprising a tree pit main body (1), characterized in that: Multiple splicing shells (2) are placed around the inner wall of the tree pit body (1), and multiple tree protection blocks (3) are installed inside the splicing shells (2). A coarse sand filter layer (4) is set inside the tree pit body (1) and below the splicing shells (2). Soil mixed with organic fertilizer is set below the coarse sand filter layer (4). Installation pipes (5) are set on both the left and right sides inside the tree pit body (1), and multiple seepage nozzles (6) are fixed on the surface of the opposite side of the installation pipes (5). A water pipe (7) is connected to the side of the installation pipes (5) away from the seepage nozzles (6). The water pipe (7) runs through the tree pit body (1). The water pipe (7) extends to the top of the tree pit body (1), and the lower half of the water pipe (7) is a retractable hose. On the left and right sides of the top of the tree pit body (1) and above the water pipe (7), a sealing box (8) is fixed. On one side of the installation pipe (5), an adjustment structure (9) is movably connected. On the upper sides of the front and rear sides inside the tree pit body (1), a rotating rod (10) is rotatably connected. On the surface of the rotating rod (10), a soil turning plate (11) is fixed. Inside the tree pit body (1) and on the left side of the rotating rod (10), a cavity (12) is opened. Inside the cavity (12), a driving structure (13) is movably connected. The adjustment structure (9) includes a chute (91), a slider (92), and a connecting rod (93). The chute (91) is opened on the front and back sides of the left and right sides of the inner wall of the tree pool body (1). The slider (92) is slidably connected inside the chute (91). The connecting rod (93) is hinged to the surface of one side of the slider (92), and the other end of the connecting rod (93) is hinged to the surface of the mounting tube (5). The connecting rod (93) is inclined as a whole. A positioning block (15) is fixed on one side of the slider (92), and the positioning block (15) is slidably connected to the inner wall of the slide groove (91). A positioning bolt (16) is provided through one side of the positioning block (15), and the positioning bolt (16) is slidably connected to the positioning block (15). A plurality of positioning holes (17) are provided on one side of the inner wall of the slide groove (91), and the positioning bolt (16) is threadedly connected to the inner wall of the positioning hole (17). Pulling the sliders (92) on both sides causes the connecting rod (93) to move the installation tube (5), adjusting the position of the installation tube (5) to fit the size of the tree roots being planted.

2. The green sponge type tree pool according to claim 1, characterized in that: The tree protection block (3) is made of polyurethane, and the splicing shell (2) is made of fiberglass.

3. A greening sponge-type tree pit according to claim 1, characterized in that: The bottom of the splicing shell (2) is fixed with multiple support blocks (14), and the support blocks (14) are located at the four corners of the bottom of the splicing shell (2).

4. The green sponge type tree pool according to claim 1, characterized in that: The top of the sealed box (8) is fitted with a first filter screen (18), and the bottom of the interior of the sealed box (8) is fixed with a second filter screen (19), and the aperture of the filter holes on the surface of the first filter screen (18) is larger than the aperture of the filter holes of the second filter screen (19).

5. The green sponge type tree pool according to claim 1, characterized in that: The drive structure (13) includes a first bevel gear (131), a connecting shaft (132), a rotating rod (133), a second bevel gear (134), and a knob (135). The first bevel gear (131) is rotatably connected to the lower left side of the inner wall of the cavity (12). The connecting shaft (132) is fixed to the right side of the first bevel gear (131), and the right end of the connecting shaft (132) passes through the tree pit body (1) and is fixedly connected to the left end of the rotating rod (10). The rotating rod (133) is located above the inside of the cavity (12), and the top end of the rotating rod (133) passes through to the top of the tree pit body (1). The second bevel gear (134) is fixed to the bottom end of the rotating rod (133), and the second bevel gear (134) meshes with the first bevel gear (131). The knob (135) is fixed to the top end of the rotating rod (133).

6. The green sponge type tree pool according to claim 5, characterized in that: The tree pool body (1) has a shield (20) fixed on the front and back sides of the top left side, and the shield (20) is located above the knob (135).

7. The green sponge type tree pool according to claim 1, characterized in that: The number of soil turning plates (11) is several, and the soil turning plates (11) are arranged in a triangular shape. The soil turning plates (11) are distributed in a ring on the left and right sides of the surface of the rotating rod (10).