Green roof structure resistant to plant root damage
By introducing a combination of mesh grooves, lifting components, root trimming mechanisms, and roll-up mechanisms into green roofs, the problem of plant roots damaging the roofs has been solved, achieving effective protection of the roofs and improving maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG HUASHENG DESIGN GRP CO LTD
- Filing Date
- 2023-08-18
- Publication Date
- 2026-06-02
AI Technical Summary
In existing green roof structures, plant roots can easily damage the root barrier layer, leading to structural damage, and there is a lack of effective protective measures.
It adopts a combined structure of mesh grooves, extension plates, lifting components, root barrier layer, drainage layer, filter layer, water storage layer, cultivation substrate layer and vegetation layer, and is equipped with a root cutting mechanism and a winding mechanism. Through the linkage of the lifting components and the root cutting mechanism, the root system is periodically cut and wound up to prevent the root system from damaging the roof.
It effectively prevents plant roots from damaging the roof structure, improves the safety and stability of the roof, reduces the labor intensity of workers, and improves maintenance efficiency and the aesthetics of the structure.
Smart Images
Figure CN116838034B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of green roof technology, specifically to a green roof structure that prevents damage from plant roots. Background Technology
[0002] To mitigate the urban heat island effect, improve air quality, enhance landscape and biodiversity, and improve building sound insulation, green roofs have come into focus. Green roofs are mainly divided into simple green roofs and duplex green roofs. Duplex green roofs require a deeper soil layer than simple green roofs and are suitable for planting taller vegetation.
[0003] Green roofs consist of a root barrier layer, a drainage layer, a filter layer, a water storage layer, a cultivation substrate layer, and a vegetation layer.
[0004] The root barrier layer is the bottom layer of a green roof structure, laid on the roof of a building to prevent plant roots from damaging the roof. The root barrier layer is usually made of polyethylene and is typically 0.05 cm thick.
[0005] The drainage layer is laid on the root barrier layer. The drainage layer is used to drain excess water and relieve instantaneous pressure. The drainage layer of a simple green roof is generally made of light and thin materials, such as polyethylene and polypropylene, with a thickness of 1-1.5cm. The drainage layer of a duplex green roof is generally made of pebbles, with a thickness of 4cm or more.
[0006] The filter layer is used to prevent soil and nutrients from being lost with water, and is usually made of polymer or polyolefin materials to create a thin filter layer.
[0007] The water storage layer is laid on the filter layer. The water storage layer is used to keep the cultivation substrate layer moist. It is usually made of mineral wool or polymer fiber pads, and the thickness of each pad is 1-6.5cm. They can be combined as needed.
[0008] The cultivation substrate layer covers the water storage layer and is used to provide a growth environment for vegetation. The main component of the cultivation substrate layer is soil. The thickness of the cultivation substrate layer is related to the vegetation. For example, small mosses need a smaller thickness, while trees may need a larger thickness.
[0009] As plant roots grow and strengthen, and the root barrier layer ages, they can damage the root barrier layer and penetrate the building's roof, causing cracks and seepage. Therefore, preventing plant roots from damaging building roofs is a technical problem that needs to be solved. Summary of the Invention
[0010] The present invention addresses the aforementioned shortcomings of the existing technology by providing a green roof structure that prevents damage from plant roots. The present invention can prevent plant roots from damaging the roof of a building.
[0011] To achieve the above objectives, the invention provides the following technical solution:
[0012] A green roof structure for preventing damage to plant roots includes a mesh groove, an extension plate, a lifting device, a root barrier layer, a drainage layer, a filter layer, a water storage layer, a cultivation substrate layer, and a vegetation layer. The drainage layer, filter layer, water storage layer, cultivation substrate layer, and vegetation layer are laid sequentially inside the mesh groove. A root barrier layer is provided below the mesh groove and is laid on the roof. An extension plate is provided at the upper outer side of the mesh groove and is connected to the roof through the lifting device.
[0013] Furthermore, the mesh groove includes a mesh base plate and a mesh surrounding plate surrounding the mesh base plate, with the extension plate provided at the upper outer side of the mesh surrounding plate.
[0014] Furthermore, it also includes a root trimming mechanism, which includes a fixed rod, a support rod, a cutter holder, a blade, a top cutter elastic element, a guide seat, and a sliding pin. Two fixed rods are arranged side by side on the roof, and the root barrier layer and several sets of support rods are provided between the two fixed rods. Each set of support rods includes two support rods, the lower ends of which are rotatably connected to the fixed rods. The upper ends of the two support rods are connected through the cutter holder. The upper end of the cutter holder is provided with a cutter groove, in which a blade and a top cutter elastic element are provided. The top cutter elastic element is used to push the blade out of the cutter groove. The end of the blade extending from the cutter groove abuts against the bottom of the mesh groove. The bottom of the mesh groove is provided with two guide seats arranged side by side, each with an elongated hole. The upper end of the side wall of the cutter holder is provided with a sliding pin, which slides in cooperation with the elongated hole.
[0015] Furthermore, the two guide seats are disposed between the two fixed rods, the lower end of the support rod is provided with a rotating shaft, the rotating shaft is rotatably connected to the fixed rod, and the guide seat is provided with a clearance groove for avoiding the rotating shaft.
[0016] Furthermore, the upper side wall of the tool holder is provided with a hidden groove, and a top pin elastic element is provided in the hidden groove. The top pin elastic element is connected to the sliding pin and is used to push the sliding pin out of the hidden groove so that the sliding pin enters the elongated hole.
[0017] Furthermore, it also includes a winding mechanism, which includes a motor, a winding shaft, a telescopic rod, a movable seat, and clamps. A motor is provided at one end of the roof, and a winding shaft is provided on the output shaft of the motor. A telescopic rod is provided at the end of the winding shaft away from the motor. The telescopic rod is located on the roof, and a movable seat is provided at the output end of the telescopic rod. The movable seat is used to support the end of the winding shaft away from the motor. Both ends of the winding shaft are provided with clamps for holding the root resistance layer.
[0018] Furthermore, the clamp includes a clamping plate and a bolt. The clamping plate has a through hole, and both ends of the take-up shaft have screw holes. The bolt passes through the through hole and connects to the screw hole. The end edge of the root resistance layer is clamped between the clamping plate and the take-up shaft.
[0019] Furthermore, the winding mechanism also includes a connecting clip, which is located at the end of the root resistance layer away from the winding shaft.
[0020] Compared with existing technologies, the beneficial effects of the invention are:
[0021] 1. In this invention, workers can periodically use a lifting device to lift the mesh groove, thereby creating a distance between the bottom of the mesh groove and the root barrier layer. This allows workers to use a knife to cut the plant roots extending from the bottom of the mesh groove and replace the root barrier layer, preventing the plant roots from growing through the root barrier layer and thus preventing the plant roots from damaging the roof structure, thereby improving the protection effect on the safety of the roof structure.
[0022] 2. In this invention, the root-shaving mechanism can scrape off the plant roots growing from the bottom of the mesh groove, further preventing the plant roots from damaging the root barrier layer and thus the roof mechanism, thereby further improving the effect of preventing plant root damage.
[0023] 3. In addition, the root trimming mechanism can be linked with the lifting and lowering of the mesh groove; during the process of the mesh groove rising or falling, the support rod in the root trimming mechanism drives the tool holder to swing together around the rotation connection of the support rod and the fixed rod as the rotation center, so that the blade on the tool holder can scrape the bottom of the mesh groove from side to side; thus, no other power source is needed, and the root trimming can be completed synchronously during the lifting and lowering of the mesh groove, which improves efficiency.
[0024] 4. Unexpectedly, when the mesh groove is lowered to its lowest position, the guide seat at the bottom of the mesh groove presses against the root barrier layer, preventing the root barrier layer from shifting on the roof and improving the stability of the root barrier layer laid on the roof. Furthermore, when the mesh groove is lowered to its lowest position, the support rods, cutter holders, and blades in the root trimming mechanism tend to be horizontal, which helps save height space, thereby reducing the height of the mesh groove, reducing the overall height of the green roof structure, and improving the stability of the green roof structure.
[0025] 5. By setting a hidden groove on the upper side wall of the tool holder and setting a top pin elastic element in the hidden groove, the top pin elastic element can be used to push the sliding pin out of the hidden hole to cooperate with the long hole. Alternatively, the sliding pin can be pressed from the long hole to make it overcome the elastic force of the top pin elastic element and exit the long hole. At this time, the tool holder separates from the bottom of the mesh groove, and the tool holder can fall under its own weight. At this time, the groove opening of the tool holder no longer faces the bottom of the mesh groove, increasing the space near the groove opening of the tool holder. Workers can replace the blades in the tool holder, which is convenient for maintenance.
[0026] 6. The winding mechanism can roll up the old root barrier layer laid on the roof, which helps reduce the labor intensity of workers compared to workers manually winding up several meters of old root barrier layer.
[0027] 7. Unexpectedly, when the motor in the winding mechanism winds up the old root resistance layer, the roots cut off by the root trimming mechanism fall onto the old root resistance layer. As the old root resistance layer is wound up, the roots that have fallen onto the old root resistance layer can move together with the old root resistance layer, so that the root groups that have fallen onto the old root resistance layer are wound away. There is no need for workers to clean the roots separately, which helps to reduce the labor intensity of workers and facilitates cleaning and maintenance.
[0028] 8. When the connecting clamp connects the old and new root resistance layers, the old root resistance layer pulls the new root resistance layer as the winding mechanism winds up the old one. The new root resistance layer replaces the old one and is laid on the roof. This allows for the simultaneous removal of the old root resistance layer and the installation of the new one, improving maintenance efficiency. Furthermore, it eliminates the need for manual installation of the new root resistance layer, further reducing the labor intensity for workers. Attached Figure Description
[0029] Figure 1 The three-dimensional assembly of the mesh groove, extension plate and lifting component in Example 1. Figure 1 ;
[0030] Figure 2 The three-dimensional assembly of the mesh groove, extension plate and lifting component in Example 1. Figure 2 ;
[0031] Figure 3 This is a schematic diagram of a green roof structure for preventing damage from plant roots, as described in Example 1.
[0032] Figure 4 This is a perspective view of the root-cutting mechanism of Embodiment 2 with the fixing rod and guide seat removed;
[0033] Figure 5 for Figure 4 A partial structural diagram showing the section cut open from the hidden groove;
[0034] Figure 6 This is a front view of the root-cutting mechanism of Embodiment 2 with the fixing rod and guide seat removed;
[0035] Figure 7 for Figure 6 Full sectional view;
[0036] Figure 8 This is a perspective view of the mesh groove, extension plate, lifting component, and root trimming mechanism in Example 2;
[0037] Figure 9 The three-dimensional representation of the roof, root barrier layer, perforated groove, extension plate, lifting component, and root trimming mechanism in Example 2. Figure 1 ;
[0038] Figure 10 The three-dimensional representation of the roof, root barrier layer, perforated groove, extension plate, lifting component, and root trimming mechanism in Example 2. Figure 2 ;
[0039] Figure 11 for Figure 10 A magnified view of a section at point A in the middle;
[0040] Figure 12 This is a perspective view of the roof, root barrier layer, mesh groove, extension plate, lifting component, root trimming mechanism, and winding mechanism in Example 3.
[0041] Figure 13 A three-dimensional view of the winding mechanism;
[0042] Figure 14 This is a three-dimensional view of the assembly of the winding mechanism and the root resistance layer.
[0043] In the picture:
[0044] 1-Root barrier layer, 2-Drainage layer, 3-Filter layer, 4-Water storage layer, 5-Cultivation substrate layer, 6-Vegetation layer
[0045] 100 - Mesh groove, 110 - Mesh base plate, 120 - Mesh surround plate
[0046] 200-Extension Board
[0047] 300-Lifting component,
[0048] 410-Fixed rod, 420-Support rod, 421-Rotating shaft, 430-Tool holder, 431-Tool groove, 432-Hidden groove, 433-Top pin elastic element, 440-Insert tool, 450-Top tool elastic element, 460-Guide seat, 461-Elongated hole, 462-Allowing groove, 470-Sliding pin
[0049] 500-Rewinding mechanism, 510-Motor, 520-Rewinding shaft, 530-Telescopic rod, 540-Modible seat, 550-Clamp, 551-Clamping plate, 552-Bolt.
[0050] 600 - Roof. Detailed Implementation
[0051] 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, not all, of the embodiments of the present invention. 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.
[0052] Example 1:
[0053] like Figure 1-3As shown, a green roof structure for preventing damage to plant roots includes a mesh groove 100, an extension plate 200, a lifting component 300, a root barrier layer 1, a drainage layer 2, a filter layer 3, a water storage layer 4, a cultivation substrate layer 5, and a vegetation layer 6.
[0054] like Figure 1-3 As shown, the mesh channel 100 includes a mesh base plate 110 and a mesh surrounding plate 120. The mesh openings in the mesh channel 100 are used for drainage and ventilation. To extend the service life of the mesh channel 100, the mesh channel 100 can be made of stainless steel.
[0055] like Figure 1-3 As shown, an extension plate 200 is provided on the upper outer side of the mesh enclosure 120.
[0056] like Figure 1-3 As shown, several lifting components 300 are arranged around the outer periphery of the mesh groove 100. The lifting components 300 can be pneumatic cylinders, hydraulic cylinders, or electric push rods. The lower end of the lifting component 300 is installed on the roof 600, and the output end of the lifting component 300 is set upwards and connected to the extension plate 200.
[0057] like Figure 1-3 As shown, a root barrier layer 1 is provided below the mesh groove 100. In this embodiment, the root barrier layer 1 can be made of polyethylene plastic film and is laid on the roof 600.
[0058] like Figure 1-3 As shown, the mesh groove 100 is sequentially lined with a drainage layer 2, a filter layer 3, a water storage layer 4, a cultivation substrate layer 5, and a vegetation layer 6.
[0059] In this embodiment, the drainage layer 2 can be a layer made of pebbles or other stones, laid on the mesh bottom plate 110 of the mesh groove 100; the filter layer 3 can be a filter screen, which can be laid directly on the pebble layer, and the edge of the filter screen extends upward to the mesh enclosure plate 120 of the mesh groove 100 to prevent the cultivation substrate layer 5 from being lost through the mesh openings of the mesh enclosure plate 120; the water storage layer 4 can be a mineral wool pad, laid on the filter screen; the cultivation substrate layer 5 can be a nutrient soil layer, laid on the mineral wool pad; the vegetation layer 6 includes small shrubs planted in the nutrient soil layer, such as roses and chrysanthemums.
[0060] Based on the above structure of the present invention, workers can periodically use the lifting component 300 to lift the mesh groove 100, thereby creating a distance between the bottom of the mesh groove 100 and the root barrier layer 1. This allows workers to use a knife to cut the plant roots extending from the bottom of the mesh groove 100 and replace the root barrier layer 1, preventing the plant roots from growing through the root barrier layer 1 and thus preventing the plant roots from damaging the roof 600 structure, thereby improving the protection effect on the safety of the roof 600 structure.
[0061] Furthermore, when using the green roof structure described above in this embodiment, an open space can be left around the mesh groove 100 to facilitate users or workers walking around the mesh groove 100. This allows workers or users to stand in the open space to perform maintenance operations such as root removal and replacement of the root barrier layer 1. For aesthetic purposes, bricks and stones can be laid in the open space for decoration.
[0062] Example 2:
[0063] This embodiment 2 is an improvement upon embodiment 1:
[0064] like Figure 4-11 As shown, this embodiment also includes a root-cutting mechanism, which includes a fixed rod 410, a support rod 420, a tool holder 430, a blade 440, a top-cutting elastic element 450, a guide seat 460, and a sliding pin 470.
[0065] like Figure 9-10 As shown, two fixed rods 410 are fixedly installed side by side on the roof 600, and the root barrier layer 1 is laid on the roof 600 between the two fixed rods 410.
[0066] like Figure 8-10 As shown, several sets of support rods 420 are provided between the two fixed rods 410 along the long side of the fixed rods 410. Figure 4 As shown, each set of support rods 420 includes two support rods 420. (As...) Figure 8-10 As shown, the lower ends of the two support rods 420 are rotatably connected to the fixed rod 410 via a rotating shaft 421, and the upper ends of the two support rods 420 are connected via a tool holder 430.
[0067] like Figure 4-7 As shown, the upper end of the cutter holder 430 is provided with a cutter groove 431. The cutter groove 431 is provided with a blade 440 and a pusher elastic member 450. The pusher elastic member 450 can be a spring. One end of the pusher elastic member 450 is connected to the blade 440, and the other end of the pusher elastic member 450 is connected to the bottom of the groove 431. The pusher elastic member 450 is used to push the blade 440 out of the cutter groove 431. The end of the blade 440 extending out of the cutter groove 431 abuts against the bottom of the mesh groove 100.
[0068] like Figure 8 As shown, the bottom of the mesh groove 100 is provided with two guide seats 460 arranged side by side, and the two fixing rods 410 are located on the outside of the two guide seats 460, as shown. Figure 11 As shown, the guide seat 460 is provided with an elongated hole 461 and a clearance groove 462. The upper end of the side wall of the tool holder 430 is provided with a sliding pin 470. The sliding pin 470 is slidably engaged with the elongated hole 461, and the clearance groove 462 is used to avoid the rotating shaft 421.
[0069] As the lifting component 300 gradually lifts the mesh groove 100, the guide seat 460 at the bottom of the mesh groove 100 moves upward along with the mesh groove 100. The elongated hole 461 on the guide seat 460 pushes the sliding pin 470 upward. Because the sliding pin 470 is located on the tool holder 430, and the tool holder 430 is located on the support rod 420, and the lower end of the support rod 420 is rotatably connected to the fixed rod 410, as the sliding pin 470 moves upward, the support rod 420, along with the fixed rod 410, moves upward. The rotating connection of 10 rotates counterclockwise from the center of rotation. The blade holder 430 rotates counterclockwise along with the support rod 420. While the sliding pin 470 moves upward, it also slides to the left in the elongated hole 461. The blade 440 located in the blade groove 431 is in contact with the bottom of the mesh groove 100 under the elastic force of the top blade elastic element 450, so that the blade 440 scrapes the bottom of the mesh groove 100 from right to left, cutting off the part of the plant roots that protrude from the bottom of the mesh groove 100.
[0070] When the lifting component 300 pushes the mesh groove 100 to the highest position, the sliding pin 470 is located at the leftmost end of the elongated hole 461. At this time, there is enough distance between the bottom of the mesh groove 100 and the roof 600, which makes it convenient for workers to remove the old root barrier layer 1 and replace it with a new root barrier layer 1.
[0071] As the lifting component 300 gradually lowers the height of the mesh groove 100, the guide seat 460 at the bottom of the mesh groove 100 descends along with the mesh groove 100. The elongated hole 461 on the guide seat 460 pushes down the sliding pin 470, causing the sliding pin 470 to not only move down with the guide seat 460, but also, because the sliding pin 470 is located on the knife holder 430, and the knife holder 430 is located on the support rod 420, and the lower end of the support rod 420 is rotatably connected to the fixed rod 410, as the sliding pin 470 moves down, the support rod 420 rotates clockwise around the rotatable connection between the support rod 420 and the fixed rod 410. The knife holder 430 rotates clockwise along with the support rod 420. While the sliding pin 470 moves down, it also slides to the right in the elongated hole 461. The blade 440 in the knife groove 431 scrapes the bottom of the mesh groove 100 from left to right to remove the plant roots extending from the bottom of the mesh groove 100 again.
[0072] When the mesh groove 100 is lowered to the lowest position, the sliding pin 470 is located at the rightmost end of the long hole 461, and the guide seat 460 at the bottom of the mesh groove 100 falls on the root barrier layer 1, preventing the root barrier layer 1 from moving on the roof 600 and improving the stability of the root barrier layer 1. At this time, the avoidance groove 462 is fastened to the rotating shaft 421.
[0073] As can be seen from the above process, the root-cutting mechanism can scrape off the plant roots growing from the bottom of the mesh groove 100, further preventing the plant roots from damaging the root barrier layer 1 and thus the roof 600 mechanism, thereby further improving the effect of preventing plant root damage.
[0074] Furthermore, the root trimming mechanism can be linked with the lifting and lowering of the mesh groove 100. During the process of raising or lowering the mesh groove 100, the support rod 420 in the root trimming mechanism drives the tool holder 430 to swing around the rotational connection between the support rod 420 and the fixed rod 410 as the rotation center, so that the blade 440 on the tool holder 430 can scrape the bottom of the mesh groove 100 from left to right. Thus, no other power source is needed, and the root trimming can be completed synchronously during the lifting and lowering of the mesh groove 100, which improves efficiency.
[0075] Unexpectedly, when the mesh groove 100 is lowered to its lowest position, the guide seat 460 at the bottom of the mesh groove 100 presses against the root barrier layer 1, preventing the root barrier layer 1 from shifting on the roof 600 and improving the stability of the root barrier layer 1 laid on the roof 600. Furthermore, when the mesh groove 100 is lowered to its lowest position, the support rod 420, the cutter holder 430, and the blade in the root trimming mechanism tend to be horizontal, which helps save height space, thereby reducing the height of the mesh groove 100, reducing the overall height of the green roof structure, and improving the stability of the green roof structure.
[0076] like Figure 4-5 As shown, further, the upper end of the side wall of the tool holder 430 is provided with a hidden groove 432, and a top pin elastic element 433 is provided in the hidden groove 432. The top pin elastic element 433 can be a spring. One end of the top pin elastic element 433 is connected to the sliding pin 470, and the other end of the top pin elastic element 433 is connected to the bottom of the groove of the hidden groove 432. The top pin elastic element 433 is used to push the sliding pin 470 out of the hidden groove 432. When the sliding pin 470 is pushed out of the hidden groove 432 by the top pin elastic element 433, the sliding pin 470 slides in conjunction with the elongated hole 461.
[0077] When the mesh groove 100 is lifted by the lifting component 300, the worker can press the sliding pin 470 through the elongated hole 461, allowing the sliding pin 470 to overcome the elastic force of the top pin elastic component 433 and exit the elongated hole 461. At this time, the cutter holder 430 separates from the bottom of the mesh groove 100, and the cutter holder 430 can fall under its own weight. At this time, the opening of the cutter groove 431 no longer faces the bottom of the mesh groove 100, increasing the space near the opening of the cutter groove 431. The worker can replace the blade 440 in the cutter groove 431, which is convenient for maintenance.
[0078] Example 3:
[0079] This embodiment 3 is an improvement upon embodiment 1 or embodiment 2:
[0080] like Figure 12-14 As shown, this embodiment also includes a winding mechanism 500, which includes a motor 510, a winding shaft 520, a telescopic rod 530, a movable seat 540, and a clamp 550.
[0081] like Figure 12-14 As shown, a motor 510 is installed at one end of the roof 600. A take-up shaft 520 is connected to the output shaft of the motor 510. A telescopic rod 530 is provided at the end of the take-up shaft 520 away from the motor 510. The telescopic rod 530 is installed on the roof 600. The telescopic rod 530 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod. A movable seat 540 is installed at the output end of the telescopic rod 530. The movable seat 540 is used to support the end of the take-up shaft 520 away from the motor 510. Both ends of the take-up shaft 520 are provided with clamps 550 for clamping the edge of the root resistance layer 1.
[0082] like Figure 13-14 As shown, the clamp 550 includes a clamping plate 551 and a bolt 552. The clamping plate 551 has a through hole (not shown in the figure), and both ends of the take-up shaft 520 have screw holes (not shown in the figure). The bolt 552 is threaded into the screw hole after passing through the through hole. The end edge of the root resistance layer 1 is clamped between the clamping plate 551 and the take-up shaft 520.
[0083] When it is necessary to rewind the old root barrier layer 1, the following operation can be performed:
[0084] (1) The worker inserts one edge of the old root barrier layer 1 laid on the roof 600 between the clamping plate 551 and the winding shaft 520, and screws the bolt 552 downward so that the bolt 552 presses the clamping plate 551 against one edge of the old root barrier layer 1.
[0085] (2) The worker starts the motor 510, which drives the take-up shaft 520 to rotate. The take-up shaft 520 drives the old root resistance layer 1 to be wound on the take-up shaft 520.
[0086] (3) The worker starts the telescopic rod 530 to shorten it. The telescopic rod 530 drives the movable seat 540 to move backward, so that the movable seat 540 no longer supports the end of the winding shaft 520 away from the motor 510, providing space for the old root resistance layer 1 to be rolled off the winding shaft 520 in the future.
[0087] (4) The worker unscrews the two bolts 552 located at both ends of the take-up shaft 520 and forcefully pulls the old root resist layer 1 wound on the take-up shaft 520 off the take-up shaft 520, thereby completing the winding of the old root resist layer 1. When pulling off the old root resist layer 1, the clamping plate 551 is clamped inside the old root resist layer 1. The clamping plate 551 can be pulled out from inside the old root resist layer 1.
[0088] As can be seen from the above process, the setting of the winding mechanism 500 can wind up the old root barrier layer 1 laid on the roof 600. Compared with workers winding up several meters of old root barrier layer 1 by hand, it helps to reduce the labor intensity of workers.
[0089] Unexpectedly, when the motor 510 rewinds the old root barrier layer 1, the roots cut off by the root trimming mechanism fall onto the old root barrier layer 1. As the old root barrier layer 1 is rewinded, the roots that have fallen onto the old root barrier layer 1 can move together with the old root barrier layer 1, so that the roots that have fallen onto the old root barrier layer 1 are wound away. There is no need for workers to clean the roots separately, which helps to reduce the labor intensity of workers and facilitates cleaning and maintenance.
[0090] Furthermore, the winding mechanism 500 also includes a connecting clip (not shown in the figure). The connecting clip can be a clamp and is located at the end of the root resistance layer 1 away from the winding shaft 520. The connecting clip is used to clamp the old and new root resistance layers 1.
[0091] Before using the winding mechanism 500 to wind up the old root barrier layer 1, the two root barrier layers 1, old and new, can be clamped together using a connecting clamp. Then, the winding mechanism 500 is used to wind up the old root barrier layer 1. As the old root barrier layer 1 is continuously wound up, it pulls the new root barrier layer 1 to move together. When the old root barrier layer 1 is finished being wound up, the new root barrier layer 1, which moves along with the old root barrier layer 1, replaces the old root barrier layer 1 and is laid on the roof 600.
[0092] As can be seen from the above process, when the connecting clamp connects the old and new root resistance layers 1, the old root resistance layer 1 pulls the new root resistance layer 1 when the winding mechanism 500 winds up the old root resistance layer 1. The new root resistance layer 1 replaces the old root resistance layer 1 and is laid on the roof 600. Thus, the new root resistance layer 1 is laid at the same time as the old root resistance layer 1 is removed, which helps to improve maintenance efficiency. Furthermore, the new root resistance layer 1 does not need to be laid manually, which helps to further reduce the labor intensity of workers.
[0093] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. A green roof structure for preventing damage from plant roots, comprising a root barrier layer, a drainage layer, a filter layer, a water storage layer, a cultivation substrate layer, and a vegetation layer sequentially laid on the roof, characterized in that, It also includes a mesh groove, an extension plate, and a lifting device. The drainage layer, the filter layer, the water storage layer, the cultivation substrate layer, and the vegetation layer are laid in sequence in the mesh groove. A root barrier layer is provided below the mesh groove. An extension plate is provided at the upper outer side of the mesh groove. The extension plate is connected to the roof through the lifting device. It also includes a root trimming mechanism, which includes a fixed rod, a support rod, a cutter holder, a blade, a top cutter elastic element, a guide seat, and a sliding pin. Two fixed rods are arranged side by side on the roof. The root barrier layer and several sets of support rods are arranged between the two fixed rods. Each set of support rods includes two support rods. The lower ends of the two support rods are rotatably connected to the fixed rods. The upper ends of the two support rods are connected through the cutter holder. The upper end of the cutter holder is provided with a cutter groove. The cutter groove is provided with a blade and a top cutter elastic element. The top cutter elastic element is used to push the blade out of the cutter groove. The end of the blade extending from the cutter groove abuts against the bottom of the mesh groove. The bottom of the mesh groove is provided with two guide seats arranged side by side. The guide seats are provided with elongated holes. The upper end of the side wall of the cutter holder is provided with a sliding pin, which slides in cooperation with the elongated holes. It also includes a winding mechanism, which includes a motor, a winding shaft, a telescopic rod, a movable seat, and a clamp. A motor is provided at one end of the roof, and a winding shaft is provided on the output shaft of the motor. A telescopic rod is provided at the end of the winding shaft away from the motor. The telescopic rod is located on the roof, and a movable seat is provided at the output end of the telescopic rod. The movable seat is used to support the end of the winding shaft away from the motor. Both ends of the winding shaft are provided with clamps for holding the root resistance layer.
2. The green roof structure for preventing damage from plant roots as described in claim 1, characterized in that, The mesh groove includes a mesh base plate and a mesh surrounding plate around the mesh base plate, with the extension plate provided at the upper outer side of the mesh surrounding plate.
3. The green roof structure for preventing damage from plant roots as described in claim 1, characterized in that, The two guide seats are disposed between the two fixed rods. The lower end of the support rod is provided with a rotating shaft, which is rotatably connected to the fixed rod. The guide seats are provided with clearance grooves to avoid the rotating shaft.
4. A green roof structure for preventing damage from plant roots as described in claim 1 or 3, characterized in that, The upper side wall of the tool holder is provided with a hidden groove, and a top pin elastic element is provided in the hidden groove. The top pin elastic element is connected to the sliding pin and is used to push the sliding pin out of the hidden groove so that the sliding pin enters the elongated hole.
5. A green roof structure for preventing damage from plant roots as described in claim 1, characterized in that, The clamp includes a clamping plate and a bolt. The clamping plate has a through hole, and both ends of the take-up shaft have screw holes. The bolt passes through the through hole and connects to the screw hole. The end edge of the root resistance layer is clamped between the clamping plate and the take-up shaft.
6. A green roof structure for preventing damage from plant roots as described in claim 1 or 5, characterized in that, The winding mechanism further includes a connecting clip, which is located at the end of the root resistance layer away from the winding shaft.