Intelligent well lid convenient to maintain

Abstract

This invention relates to the field of manhole cover technology, and more particularly to a smart manhole cover that is easy to maintain, comprising an outer manhole cover, a middle manhole cover, and an inner panel; the outer manhole cover is equipped with an optical rain sensor for detecting whether it is raining. This invention uses an auxiliary component to move the outer manhole cover and its components upwards during rain, ensuring it remains above the manhole opening while maintaining a seal. This reduces rainwater accumulation on the smart manhole cover and minimizes the risk of pedestrians stepping on it during rain, thus reducing the load on the cover and preventing deformation and sinking. During rain, water accumulated in the inner manhole cover can be drained through the middle manhole cover into a water storage space. After the rain stops, the drainage component drains the water, preventing rainwater from accumulating in the inner manhole cover and soaking plant roots, causing oxygen deficiency, hindering plant growth, or even killing the plants.

Description

Technical Field

[0001] This invention relates to the field of manhole cover technology, and in particular to an intelligent manhole cover that is easy to maintain. Background Technology

[0002] Compared to ordinary cast iron and resin manhole covers, grass-covered manhole covers are recessed, allowing them to be filled with soil for planting flowers and grasses. Once in place, the cover blends seamlessly with the surrounding environment. Traditional grass-covered manhole covers are widely used in gardens, lawns, and other green spaces, achieving ecological integration with the surrounding environment by covering the surface with soil and planting plants. However, because cables and pipes are installed inside the manhole beneath the cover, drainage holes cannot be directly opened, leading to water accumulation during rainfall. Rainwater seeps into the grass-covered manhole and accumulates at the bottom of the planting layer, constantly soaking the plant roots and causing root rot due to lack of oxygen. This necessitates frequent plant replacement to maintain the aesthetic appeal, significantly increasing maintenance costs. Furthermore, since the manhole cover's load-bearing capacity was not designed to withstand continuous water pressure, when the combined weight of the accumulated water exceeds the material's elastic limit, the edges of the frame are prone to plastic deformation. The continuous retention of water causes a significant increase in the cover's weight, especially during heavy rain. This overload can easily deform the cover structure, even causing it to become stuck in the manhole opening, making it difficult to open and threatening the safety of the facility. Summary of the Invention

[0003] To overcome the shortcomings of manhole covers, such as the inability to create drainage holes due to cable and pipe installations, which leads to rainwater seeping into the planting layer and soaking plant roots for a long time, causing rot and increasing maintenance costs; and the increased weight of the manhole cover due to water accumulation, making it easy to deform and jam during heavy rain, causing difficulty in opening and threatening the safety of the facility, this invention provides an easy-to-maintain smart manhole cover.

[0004] Technical Solution: An easy-to-maintain smart manhole cover includes an outer manhole cover; an optical rain sensor for detecting rain is installed on the outer manhole cover; it also includes a middle manhole cover, an inner manhole cover, an inner plate, a first electric slider, a sealing block, auxiliary components, and a drainage component; the middle manhole cover is located on the inner ring surface of the outer manhole cover; a rectangular first through groove is formed on the side arc surface of the middle manhole cover; several first drainage holes are formed on the bottom surface of the middle manhole cover; a water-holding space is formed between the outer manhole cover and the middle manhole cover; two arc-shaped inner plates are provided on the outer manhole cover, forming two arc-shaped connecting areas between the two inner plates and the outer and middle manhole covers; a first sliding groove is formed on each inner plate. Each first groove is slidably connected to a first electric slider; all first electric sliders are connected to an inner manhole cover for planting plants; the inner manhole cover has a second through groove on its side arc surface and several second drainage holes on its bottom surface, the second drainage holes being circular and the same size as the first drainage holes; the inner manhole cover has two main drainage holes; the outer manhole cover has two sealing blocks, each located within the arc-shaped connecting area; and initially, the main drainage holes are aligned with the sealing blocks; the underside of the outer manhole cover has auxiliary components to help reduce water accumulation and facilitate manual removal of the manhole cover; a drainage component is installed within the water storage space.

[0005] Furthermore, it is particularly preferred that the auxiliary components include a base plate, a sealing strip, a pusher, and a first driving member; a base plate is provided at the bottom of the outer manhole cover; a sealing strip is provided on the base plate; four sliding grooves are provided on the base plate in a cross pattern; a pusher is slidably connected to each sliding groove, and a spring is provided between each pusher and the base plate; several first driving members are fixedly connected to the base plate; the output end of the first driving member is connected to the outer manhole cover; a second driving member is provided on the drainage plate, and a pusher block is fixedly connected to the output end of the second driving member and the pusher block contacts the pusher.

[0006] Furthermore, preferably, the drainage assembly includes a drainage plate, a second electric slider, a fixed post, a connecting rod, a fixing block, and a pressure sensor; the outer manhole cover has four second sliding grooves and two third sliding grooves on its side arc surface; every two second sliding grooves and one third sliding groove are interconnected to form an H-shape; a second electric slider is slidably connected in each third sliding groove; a fixed post is fixedly connected to each second electric slider; a drainage plate for draining water accumulated in the water storage space is fixedly connected to two fixed posts; a pressure sensor is installed on the drainage plate; a connecting rod is slidably connected to each fixed post; each connecting rod extends out of the inner manhole cover, and a fixing block is installed at the top of each connecting rod; and the fixing block is located above the inner manhole cover.

[0007] Furthermore, it is particularly preferred that the connecting rod is equipped with a float.

[0008] Furthermore, it is particularly preferred that both the second channel and the second drainage hole are equipped with intercepting nets for intercepting soil.

[0009] In addition, it is particularly preferable that the fixing block is marked with manhole cover information.

[0010] Furthermore, it is particularly preferred that the inner manhole cover is detachably connected to the first electric slider, and the fixing block is detachably connected to the connecting rod.

[0011] In addition, it is particularly preferred that the top of the outer manhole cover be chamfered.

[0012] Furthermore, it is particularly preferred that the outer manhole cover and the middle manhole cover be detachably connected.

[0013] Furthermore, it is particularly preferred that the drainage board can only slide upwards to the underside of the middle layer of the manhole cover.

[0014] The beneficial effects of this invention are as follows: By setting the outer manhole cover to be fully enclosed and setting a water storage space between the outer and middle manhole covers to store accumulated water, and when the middle and inner manhole covers are in use, the first and second through slots are aligned, and the first and second drainage holes are aligned. Compared with the grass basin manhole cover, which is prone to water accumulation due to its shape and the presence of cables and pipes in the manhole, preventing water from being drained into the manhole, this smart manhole cover allows the water accumulated in the inner manhole cover to pass through the middle manhole cover and drain into the water storage space during rain. After the rain stops, the water is drained through the drainage component, preventing rainwater from accumulating in the inner manhole cover and causing water to soak the plant roots inside the inner manhole cover, leading to oxygen deficiency in the plant roots, hindering plant growth, or even causing death.

[0015] When it rains, the auxiliary components move the outer manhole cover and its parts upwards, keeping it above the manhole opening while maintaining a seal. This reduces the amount of rainwater accumulating on the smart manhole cover. Furthermore, by keeping the outer manhole cover and its parts above the manhole opening, it reduces the chance of pedestrians stepping on the smart manhole cover during rain, which could cause excessive load on the cover and lead to deformation or sinking.

[0016] By marking manhole cover information on fixed blocks, it is easier to quickly identify the manhole cover that needs repair when manually repairing manholes;

[0017] The auxiliary component moves the outer manhole cover and its parts upwards, above the manhole opening, making it easier for maintenance personnel to remove the smart manhole cover by holding the part above the manhole opening. This avoids the problem of traditional grass basin manhole covers being difficult to pry open with a crowbar due to their thickness, which can lead to damage to the edges of the manhole cover and make it difficult to open. When the outer manhole cover and its parts move upwards above the manhole opening, the auxiliary component is fixed to the manhole wall, intercepting any impurities between the invention and the manhole wall on the auxiliary component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the easy-to-maintain smart manhole cover of the present invention;

[0019] Figure 2 Exploded view of the easy-to-maintain smart manhole cover of the present invention;

[0020] Figure 3 This is a cross-sectional view of the outer layer manhole cover and the middle layer manhole cover of the present invention;

[0021] Figure 4 This is an exploded cross-sectional view of the outer layer manhole cover, the middle layer manhole cover, and the inner layer manhole cover of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the sealing block, inner plate, and second slide groove combination of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the drainage plate, the second driving member, and the push bar assembly of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the push bar, the first driving member, and the sliding groove combination of the present invention;

[0025] Figure 8 This is a three-dimensional structural diagram of the drainage plate, the second driving member, and the push bar assembly of the present invention;

[0026] Figure 9 This is an exploded view of the base plate and push bar of the present invention.

[0027] Labels in the diagram: 1-Outer manhole cover, 11-Sealing block, 1001-Inner plate, 1002-Second chute, 1003-Water storage space, 1004-Third chute, 2-Middle manhole cover, 2001-First through groove, 2002-First drainage hole, 3-Inner manhole cover, 3001-Second through groove, 3002-Second drainage hole, 3003-Main drainage hole, 31-First electric slider, 4-Base plate, 41-Sealing strip, 42-Push strip, 43-First driving component, 4001-Sliding groove, 101-Drainage plate, 102-Second electric slider, 103-Fixing column, 104-Connecting rod, 105-Fixing block, 106-Pressure sensor, 107-Second driving component, 1071-Push block. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0029] Example: Figures 1-9As shown, an easy-to-maintain smart manhole cover includes an outer manhole cover 1; an optical raindrop sensor is installed on the outer manhole cover 1.

[0030] It also includes a middle layer manhole cover 2, an inner layer manhole cover 3, an inner plate 1001, a first electric slider 31, a sealing block 11, auxiliary components, and a drainage component; the middle layer manhole cover 2 is provided on the inner ring surface of the outer layer manhole cover 1; a rectangular first through groove 2001 is opened on the side arc surface of the middle layer manhole cover 2; several first drainage holes 2002 are opened on the bottom surface of the middle layer manhole cover 2; a water storage space 1003 is formed between the outer layer manhole cover 1 and the middle layer manhole cover 2; two arc-shaped inner plates 1001 are provided on the outer layer manhole cover 1, and two arc-shaped connecting areas are formed between the two inner plates 1001 and the outer layer manhole cover 1 and the middle layer manhole cover 2; a first sliding groove is opened on each inner plate 1001, and a first electric slider 31 is slidably connected in each first sliding groove; all the first electric sliders 31 are ... The sliding block 31 is connected to the inner manhole cover 3. The inner manhole cover 3 has a second through groove 3001 on its side arc surface and several second drainage holes 3002 on its bottom surface. The second drainage holes 3002 are circular. The second drainage holes 3002 are the same size as the first drainage holes 2002 and are initially aligned. The inner manhole cover 3 has two main drainage holes 3003. The outer manhole cover 1 has two sealing blocks 11, each of which is located in the arc-shaped connecting area. The main drainage holes 3003 are initially aligned with the sealing blocks 11. An auxiliary component is provided on the lower side of the outer manhole cover 1. A drainage component is provided in the water storage space 1003 to drain the water accumulated in the water storage space 1003.

[0031] The auxiliary components include a base plate 4, a sealing strip 41, a pusher 42, and a first driving member 43; the base plate 4 is provided at the bottom of the outer manhole cover 1; the sealing strip 41 is provided on the base plate 4; four sliding grooves 4001 arranged in a cross shape are provided on the base plate 4; a pusher 42 is slidably connected to each sliding groove 4001, and a spring is provided between each pusher 42 and the base plate 4; several first driving members 43 are fixedly connected to the base plate 4, and the first driving members 43 are electric push rods; the output end of the first driving members 43 is connected to the outer manhole cover 1; a second driving member 107 is provided on the drainage plate 101, and the second driving member 107 is a multi-stage push rod, and a pusher block 1071 is fixedly connected to the output end of the second driving member 107, and the pusher block 1071 is in contact with the pusher 42.

[0032] The drainage assembly includes a drainage plate 101, a second electric slider 102, a fixing post 103, a connecting rod 104, a fixing block 105, and a pressure sensor 106. The outer manhole cover 1 has four second sliding grooves 1002 and two third sliding grooves 1004 on its side arc surface. Each pair of second sliding grooves 1002 and one third sliding groove 1004 are interconnected, forming an H-shape. Each third sliding groove 1004 has a second electric slider 102 slidably connected to it. Each second electric slider 102 is fixedly connected to a fixing post 103. Two fixing posts 103 are jointly fixedly connected to the drainage plate 101. A pressure sensor 106 is installed on the drainage plate 101. Each fixing post 103 has a connecting rod 104 slidably connected to it. Each connecting rod 104 extends through the inner manhole cover 3, and a fixing block 105 is installed at the top of each connecting rod 104. The fixing block 105 is located above the inner manhole cover 3.

[0033] A float is installed on the connecting rod 104; the float senses the amount of water in the water storage space 1003 and causes the connecting rod 104 to float.

[0034] Both the second channel 3001 and the second drainage hole 3002 are equipped with intercepting nets.

[0035] The fixing block 105 is marked with manhole cover information. Compared with the existing grass basin manhole cover, marking the manhole cover information on the fixing block 105 makes it easier to quickly identify the manhole cover that needs to be repaired when manually repairing the manhole.

[0036] The inner manhole cover 3 is detachably connected to the first electric slider 31, and the fixing block 105 is detachably connected to the connecting rod 104. When it is necessary to replace the soil inside the inner manhole cover 3, the inner manhole cover 3 can be directly removed. When replacing the soil, the inner manhole cover 3 can be transferred for centralized replacement. The inner manhole cover 3 can be transferred to other locations for centralized replacement, avoiding the inconvenience and pollution caused by soil replacement at the manhole site. In addition, during the process of disassembling the inner manhole cover 3, the internal structure and components can be inspected at the same time, while ensuring that the manhole opening is sealed.

[0037] The top of the outer manhole cover 1 is chamfered to facilitate the outward diversion of surrounding rainwater.

[0038] The outer manhole cover 1 and the middle manhole cover 2 are detachably connected. By removing the middle manhole cover 2, the water storage space 1003 can be cleaned.

[0039] The drainage board 101 can only slide upwards to the lower side of the middle layer manhole cover 2. When the drainage board 101 moves to the lower side of the middle layer manhole cover 2 to drain the accumulated water, the water squeezed by the drainage board 101 to the middle layer manhole cover 2 and the outer layer manhole cover 1 is retained, so that when the plant is short of water, this part of the accumulated water can be used to irrigate the plant.

[0040] The workflow of this easy-to-maintain smart manhole cover is as follows:

[0041] The smart manhole cover is installed at the manhole opening in areas such as parks, lawns, and landscape walkways. The top of the smart manhole cover is flush with the manhole opening, and the first through groove 2001 and the second through groove 3001 are aligned. The first drainage hole 2002 and the second drainage hole 3002 are aligned. The inner layer of the manhole cover 3 is covered with soil and planted with plants.

[0042] Rainwater drips onto the soil of the inner manhole cover 3, then flows downwards through the soil. After the soil becomes saturated with water, excess rainwater accumulates at the bottom of the inner manhole cover 3. The accumulated rainwater flows to the middle manhole cover 2 through the second channel 3001 and the second drainage hole 3002. Since the first channel 2001 is aligned with the second channel 3001, and the first drainage hole 2002 is aligned with the second drainage hole 3002, the rainwater flowing into the middle manhole cover 2 passes through the first channel 2001 and the first drainage hole 2002 and flows into the water storage space 1003. When the water level in the water storage space 1003 exceeds the top of the fixed column 103, the pressure sensor 106 detects that the pressure exceeds a preset threshold and triggers the second driving component 107. The output end of the second driving component 107 drives the push block 1071 to move downwards. The push block 1071 squeezes the push strip 42 towards the well wall, causing the push strip 42 to push the sealing strip 41 into close contact with the well wall. At this time, the base plate 4 is also fixed to the well wall by the push strip 42 pushing the sealing strip 41 into close contact with the well wall. Subsequently, the output end of the first driving component 43 is driven upwards, causing the outer well cover 1 and its components to move upwards together. At the wellhead, by fixing the base plate 4 to the well wall, the outer manhole cover 1 and its components can be pushed above the wellhead by the output end of the first drive component 43. It is important to note that the smart manhole cover still seals the wellhead. While the outer manhole cover 1 and its components are moved upwards by the output end of the first drive component 43, the output end of the second drive component 107 adjusts its downward movement to match the upward movement of the outer manhole cover 1. The maximum preset threshold for the pressure sensor 106 is the pressure exerted on it when the water in the water storage space 1003 is level with the top of the fixed column 103. During rain, the auxiliary components move the outer manhole cover 1 and its components upwards together, maintaining the seal on the manhole while keeping it above the wellhead. This reduces rainwater accumulation on the smart manhole cover and serves as a warning by keeping it above the wellhead, reducing the risk of pedestrians stepping on the smart manhole cover during rain, thus preventing excessive load and deformation or sinking.

[0043] After the optical raindrop sensor detects that the rain has stopped, it triggers the output of the first drive unit 43 to move downwards, returning the outer manhole cover 1 and its components to their original positions, with the top flush with the manhole opening. Then, the output of the second drive unit 107 moves upwards back to its original position. Without the pressure of the push block 1071 or the action of the spring, the push bar 42 returns to its original position. Simultaneously, the second electric slider 102 is located within the second slide groove 1002, and its height is flush with the third slide groove 1004. This then drives the first electric slider 31 to slide counterclockwise from top to bottom within the first slide groove on the inner plate 1001, causing the inner manhole cover 3, drainage plate 101, and connecting rod 104 to rotate counterclockwise until the first through groove 2001 meets the second through groove. 3001 is misaligned, the first drainage hole 2002 is misaligned with the second drainage hole 3002, the main drainage hole 3003 is misaligned with the sealing block 11, the main drainage hole 3003 stops rotating when it connects with the water storage space 1003 through the arc-shaped connecting area, at this time the second electric slider 102 slides into the third slide groove 1004 with the rotation of the drainage plate 101, and further slides into another second slide groove 1002 connected with the third slide groove 1004, and then drives the second electric slider 102 to drive the drainage plate 101 to move upward, the water is squeezed out from the main drainage hole 3003 by the drainage plate 101, the drainage plate 101 stops moving upward when it moves to the lower side of the middle layer manhole cover 2, at this time there is still some water between the outer layer manhole cover 1, the middle layer manhole cover 2 and the drainage plate 101.

[0044] When the soil inside the inner manhole cover 3 needs to be irrigated, with the first channel 2001 aligned with the second channel 3001 and the first drainage hole 2002 aligned with the second drainage hole 3002, the second electric slider 102 is directly driven to move upward along the second chute 1002 to irrigate the remaining water into the soil.

[0045] When the manhole needs to be inspected or repaired, the output end of the second drive component 107 drives the push block 1071 to move downward, squeezing the push strip 42 and pushing the sealing strip 41 towards the well wall, making close contact with the well wall and fixing the base plate 4 to the well wall. Then, the output end of the first drive component 43 is driven to move upward, allowing the outer manhole cover 1 and its parts to move upward together, higher than the well opening. The maintenance personnel can then use the part higher than the well opening to remove the smart manhole cover and inspect or repair the inside of the manhole.

[0046] Based on the above workflow, we can see that the present invention has the following effects:

[0047] By setting the outer manhole cover 1 to be fully enclosed, and setting a water storage space 1003 between the outer manhole cover 1 and the middle manhole cover 2 to store accumulated water, when the middle manhole cover 2 and the inner manhole cover 3 are in use, the first through groove 2001 and the second through groove 3001 are aligned, and the first drainage hole 2002 and the second drainage hole 3002 are aligned. Compared with the grass basin manhole cover, which is prone to water accumulation due to its shape and the presence of cables and pipes in the manhole, preventing water from being drained into the manhole, this smart manhole cover allows the water accumulated in the inner manhole cover 3 to pass through the middle manhole cover 2 and drain into the water storage space 1003 when it rains. After the rain stops, the water is drained through the drainage component, preventing rainwater from accumulating in the inner manhole cover 3 and causing water to soak the plant roots inside the inner manhole cover 3, leading to oxygen deficiency in the plant roots, hindering plant growth, or even causing death.

[0048] When manhole covers need repair, unlike existing grass-covered manhole covers where plants are planted inside, making it impossible to mark the manhole cover information, this invention marks the manhole cover information on a fixing block 105. This facilitates quick identification of the manhole cover requiring repair during manual maintenance. Furthermore, unlike existing methods that require prying grass-covered manhole covers with a crowbar, this invention uses an auxiliary component to move the outer manhole cover 1 and its components upwards above the manhole opening. Maintenance personnel can then remove the smart manhole cover by holding the portion above the opening. This avoids the problem of traditional grass-covered manhole covers being difficult to pry with a crowbar due to their thickness, and the risk of damage to the edges if pryed forcefully. When the outer manhole cover 1 and its components are moved upwards above the manhole opening, the auxiliary component is fixed to the manhole wall, trapping any impurities between the invention and the manhole wall.

[0049] The additional technical effects of this invention are as follows:

[0050] Among them, such as Figure 3 As shown, a float is installed on the connecting rod 104; the float senses the amount of water in the water storage space 1003, and when the amount of water exceeds the top of the fixed column 103, the connecting rod 104 floats up. When the connecting rod 104 floats up, but the top of the smart manhole cover does not protrude from the well opening, it indicates that the smart manhole cover has malfunctioned and can be repaired in time.

[0051] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of the invention. Therefore, the scope of the invention should be limited only by the appended claims.

Claims

1. A smart manhole cover that is easy to maintain, comprising an outer manhole cover (1); an optical rain sensor for detecting whether it is raining is provided on the outer manhole cover (1); characterized in that: It also includes a middle layer manhole cover (2); the middle layer manhole cover (2) is provided on the inner ring surface of the outer layer manhole cover (1); a rectangular first through groove (2001) is opened on the side arc surface of the middle layer manhole cover (2); several first drainage holes (2002) are opened on the bottom surface of the middle layer manhole cover (2); a water storage space (1003) is formed between the outer layer manhole cover (1) and the middle layer manhole cover (2); two arc-shaped inner plates (1001) are provided on the outer layer manhole cover (1), and two arc-shaped connecting areas are formed between the two inner plates (1001) and the outer layer manhole cover (1) and the middle layer manhole cover (2); a first sliding groove is opened on each inner plate (1001), and a first electric slider (31) is slidably connected in each first sliding groove; all the first electric sliders (31) are connected together to a planter. The inner layer manhole cover (3) has a second through groove (3001) on its side arc surface and several second drainage holes (3002) on its bottom surface. The second drainage holes (3002) are circular and the second drainage holes (3002) are the same size as the first drainage holes (2002). The inner layer manhole cover (3) has two main drainage holes (3003). The outer layer manhole cover (1) has two sealing blocks (11), each of which is located in the arc-shaped connecting area. In the initial state, the main drainage holes (3003) are aligned with the sealing blocks (11). The lower side of the outer layer manhole cover (1) is provided with auxiliary components to help reduce water accumulation and facilitate manual removal of the manhole cover. The water storage space (1003) is provided with drainage components. The drainage assembly includes a drainage plate (101), a second electric slider (102), a fixing post (103), a connecting rod (104), a fixing block (105), and a pressure sensor (106); the outer manhole cover (1) has four second sliding grooves (1002) and two third sliding grooves (1004) on its side arc surface; every two second sliding grooves (1002) and one third sliding groove (1004) are interconnected to form an H-shape; each third sliding groove (1004) has a second electric slider (102) slidably connected to it; each second electric slider (102 ... the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric slider (102) slidably connected to the second electric Each slider (102) is fixedly connected to a fixed column (103); both fixed columns (103) are fixedly connected to a drainage plate (101) for draining water from the water storage space (1003); a pressure sensor (106) is installed on the drainage plate (101); a connecting rod (104) is slidably connected to each fixed column (103); each connecting rod (104) protrudes through the inner manhole cover (3), and a fixing block (105) is installed at the top of each connecting rod (104); and the fixing block (105) is located above the inner manhole cover (3); The auxiliary components include a base plate (4), a sealing strip (41), a pusher (42), and a first drive member (43); the base plate (4) is provided at the bottom of the outer manhole cover (1); a sealing strip (41) is provided on the base plate (4); four sliding grooves (4001) are provided on the base plate (4) in a cross shape; a pusher (42) is slidably connected to each sliding groove (4001), and a spring is provided between each pusher (42) and the base plate (4); several first drive members (43) are fixedly connected to the base plate (4); the output end of the first drive member (43) is connected to the outer manhole cover (1); a second drive member (107) is provided on the drainage plate (101), and a pusher block (1071) is fixedly connected to the output end of the second drive member (107), and the pusher block (1071) is in contact with the pusher (42).

2. The easy-to-maintain smart manhole cover according to claim 1, characterized in that: A float is provided on the connecting rod (104).

3. The easy-to-maintain smart manhole cover according to claim 1, characterized in that: Both the second channel (3001) and the second drainage hole (3002) are equipped with interception nets for intercepting soil.

4. A smart manhole cover that is easy to maintain according to claim 1, characterized in that: The fixing block (105) is marked with manhole cover information.

5. A smart manhole cover that is easy to maintain according to claim 4, characterized in that: The inner manhole cover (3) is detachably connected to the first electric slider (31), and the fixing block (105) is detachably connected to the connecting rod (104).

6. A smart manhole cover that is easy to maintain according to claim 1, characterized in that: The top of the outer manhole cover (1) is chamfered.

7. A smart manhole cover that is easy to maintain according to claim 1, characterized in that: The outer manhole cover (1) and the middle manhole cover (2) are detachably connected.

8. A smart manhole cover that is easy to maintain according to claim 1, characterized in that: The drainage board (101) can only slide upwards to the underside of the middle layer manhole cover (2).

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