A well lid with an inner protection structure for municipal engineering and an implementation method thereof

Abstract

The application discloses a well lid with an inner protection structure for municipal engineering and an implementation method thereof, and belongs to the technical field of well lids. The well lid with the inner protection structure for the municipal engineering and the implementation method thereof comprise a well lid mounting ring, an inner clamping groove for mounting a well lid body is formed in the inside of the well lid mounting ring, and a locking assembly is arranged between the outer wall of the well lid body and the inner wall of the well lid mounting ring. The first clamping groove and the second clamping groove are blocked by moving the limiting block upwards, the first clamping block and the second clamping block are effectively locked, the well lid body is locked, the well lid body is prevented from being stolen, the use safety is improved, the circular steel net is arranged in the two-layer circular net pipes, the toughness of the circular net pipe is improved while the supporting effect is improved, the two-layer circular net pipes support when the well lid body is damaged, people are prevented from falling into the well and being injured, and the supporting effect is improved.

Description

Technical Field

[0001] This invention relates to the field of manhole cover technology, specifically to a municipal engineering manhole cover with an internal protective structure and its implementation method. Background Technology

[0002] In major cities across my country, to facilitate the discharge of sewage and rainwater, many manholes connected to sewers are installed on the roads. To prevent people or objects from falling into the sewers, manhole covers are installed on the manholes.

[0003] Chinese patent CN208763071U discloses a municipal engineering manhole cover with anti-theft function. The municipal engineering manhole cover with anti-theft function is reasonably designed, has good anti-theft performance, and high drainage performance.

[0004] In actual use, the manhole cover of the above patent cannot be disassembled into upper and lower sections due to its integral structure, nor can it be disassembled individually. Furthermore, its overall support performance is poor, failing to provide adequate support for the manhole cover, resulting in low safety during use. Therefore, it does not meet current requirements. In response, we propose a manhole cover for municipal engineering with an internal protective structure and its implementation method. Summary of the Invention

[0005] The purpose of this invention is to provide a municipal engineering manhole cover with an internal protective structure and its implementation method. By moving the limiting block upward, the first and second slots are sealed, effectively locking the first and second locking blocks, thereby locking the manhole cover body, preventing theft, and improving safety. A circular steel mesh is installed inside the two layers of circular mesh pipes, which increases the support effect and improves the toughness of the circular mesh pipes. When the manhole cover body is damaged, the two layers of circular mesh pipes provide support, preventing people from falling into the manhole and getting injured, thus improving the support effect and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a manhole cover for municipal engineering with an internal protective structure, including a manhole cover mounting ring, wherein the manhole cover mounting ring has an internal slot for mounting the manhole cover body, and a locking assembly is provided between the outer wall of the manhole cover body and the inner wall of the manhole cover mounting ring.

[0007] The manhole cover body also includes a filter assembly, which is disposed inside the manhole cover body, and a protective assembly is disposed below the manhole cover body.

[0008] Preferably, the manhole cover body includes an upper cover and a lower cover, a filter assembly is provided between the upper cover and the lower cover, two drainage holes are provided on the upper cover, a water outlet is provided on the lower cover, a hexagonal hole is provided at the center of the upper cover and the lower cover, and a pull-out groove is provided on the inner wall of the hexagonal hole.

[0009] Preferably, the filter assembly includes a filter bag, a placement slot, and hooks. The placement slot is located between the upper cover and the lower cover. A ring of hooks is provided below the upper cover, and the filter bag is fixedly installed on the hooks.

[0010] Preferably, the locking assembly includes an insertion groove, a first slot, a second slot, a first block, a second block, a limiting block, and a driving assembly. The insertion groove is formed on the inner wall of the manhole cover mounting ring. The side end of the insertion groove extends to form the first slot and the second slot. The first block and the second block are fixed on the outer wall of the manhole cover body, and the first block and the second block are movably inserted into the insertion groove.

[0011] Preferably, an internal groove extends below the insertion groove, and a limiting block is disposed in the internal groove. The limiting block is mounted on the drive assembly, which is fixed to the bottom end of the manhole cover mounting ring. Multiple first slots, second slots, first blocks, second blocks, and limiting blocks are provided. The second slot is disposed above the first slot. The first blocks are fixed to the outer side wall of the lower cover body, and the second blocks are fixed to the outer side wall of the upper cover body. The limiting block is movably inserted into the insertion groove.

[0012] Preferably, the drive assembly includes a fixed plate, a drive motor, a linkage ring, a drive gear, and a lead screw. The fixed plate is fixed to the inner wall of the manhole cover mounting ring by a support rod. The drive motor is mounted on the fixed plate, and the output end of the drive motor is connected to the center plate of the linkage ring. The lead screw is installed through the built-in groove, and a limit block is sleeved on the lead screw. The drive gear is installed below the lead screw, and the surface of the linkage ring has a toothed groove that meshes with the drive gear.

[0013] Preferably, the protective component includes annular steel pipe, strip steel pipe, penetrating steel rope and support component. Multiple strip steel pipes are provided and arranged in annular arrangement, with their center welded and fixed. Multiple annular steel pipes are sequentially sleeved on the annularly arranged strip steel pipes, and the strip steel pipes and annular steel pipes are welded alternately to form a circular mesh.

[0014] Preferably, the circular mesh pipe formed by welding strip steel pipes and annular steel pipes has two layers, and the outer walls of the two layers of strip steel pipes are fixed to the inner wall of the manhole cover mounting ring. Interlaced penetrating steel ropes are installed inside the strip steel pipes, and the interlaced penetrating steel ropes form a circular steel mesh. One end of the penetrating steel rope is connected to the inner wall of the manhole cover mounting ring, and a support component is provided between the two layers of circular mesh pipes.

[0015] Preferably, the support assembly includes an upper support plate, a lower support plate, a connecting rod, and an inclined support rod. The upper support plate and the lower support plate are connected by the connecting rod. An inclined support rod is fixed on the outer wall of the connecting rod, and one end of the inclined support rod is connected to the inner wall of the manhole cover mounting ring.

[0016] This invention provides another technical solution: a method for implementing a manhole cover for municipal engineering with an internal protective structure, comprising the following steps:

[0017] Step 1: Align the first and second locking blocks on the upper and lower cover with the insertion grooves on the inner wall of the manhole cover mounting ring, and place the upper and lower cover into the inner locking grooves;

[0018] Step 2: Rotate the upper cover and the lower cover to screw the first and second locking blocks into the first and second locking slots. The limiting block moves upward under the drive of the drive component and blocks the insertion slot, locking the first and second locking blocks.

[0019] Step 3: Two layers of circular mesh pipes, formed by welding strip steel pipes and ring steel pipes, support the upper and lower cover bodies;

[0020] Step 4: The two drainage holes on the top cover are used for drainage. When water passes through the filter bag in the placement tank, the filter bag filters out impurities in the water.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The present invention has a placement groove between the upper cover and the lower cover. A ring of hooks is provided below the upper cover, and a filter bag is fixedly installed on the hooks. The drainage hole is used for drainage of the manhole cover. When the water flows through the filter bag, it can filter impurities in the water, prevent impurities from clogging the internal water outlet, and increase drainage efficiency.

[0023] 2. In this invention, the first locking block is fixed on the outer side wall of the lower cover, and the second locking block is fixed on the outer side wall of the upper cover. The limiting block is movably inserted into the interlocking groove. The first and second locking blocks on the upper and lower covers are aligned with the interlocking groove on the inner wall of the manhole cover mounting ring. By rotating the upper and lower covers, the first and second locking blocks are screwed into the first and second locking grooves, effectively limiting the manhole cover body. The first and second locking blocks are screwed into the locking grooves for limiting support, which can increase the support performance of the entire manhole cover body and improve the stability of the manhole cover body.

[0024] 3. In this invention, the output end of the drive motor is connected to the center plate of the linkage ring. The lead screw is installed through the built-in groove, and the limiting block is sleeved on the lead screw. A drive gear is installed below the lead screw. The surface of the linkage ring is provided with a toothed groove that meshes with the drive gear. The drive motor drives the linkage ring to rotate. Under the action of the toothed groove and the drive gear meshing, the lead screw is driven to rotate, thereby driving the limiting block to move on the lead screw. The limiting block moves upward and blocks the first and second slots, effectively locking the first and second slots, thereby locking the manhole cover body, preventing the manhole cover body from being stolen, and improving the safety of use.

[0025] 4. The present invention has a hexagonal hole at the center of the upper and lower cover bodies. A pull-out groove is provided on the inner wall of the hexagonal hole. The driving component can drive the limiting block to move down, open the second slot, insert the hexagonal lifting rod into the hexagonal hole, and rotate the lifting rod on the outside of the hexagonal lifting rod to cooperate with the pull-out groove to unscrew the second locking block on the outside of the upper cover body. Then the upper cover body is lifted out by the hexagonal lifting rod, opening the placement groove, which facilitates the cleaning of impurities filtered by the filter bag and prevents impurities from accumulating and affecting the drainage effect.

[0026] 5. This invention comprises two layers of circular mesh pipe formed by welding strip steel pipes and annular steel pipes. The outer walls of both layers of strip steel pipes are fixed to the inner wall of the manhole cover mounting ring. Interlaced penetrating steel ropes are installed inside the strip steel pipes, forming a circular steel mesh. One end of each penetrating steel rope is connected to the inner wall of the manhole cover mounting ring. A support component is installed between the two layers of circular mesh pipes, and a circular steel mesh is installed inside the two layers of circular mesh pipes. This increases the support effect and improves the toughness of the circular mesh pipes. When the manhole cover body is damaged, the two layers of circular mesh pipes provide support, preventing people from falling into the manhole and getting injured, thus improving the support effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is an exploded view of the overall structure of the present invention;

[0029] Figure 3 This is a cross-sectional view of the manhole cover body structure of the present invention;

[0030] Figure 4 This is an exploded view of the locking assembly structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the drive component structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the protective component structure of the present invention;

[0033] Figure 7 This is a partial structural diagram of the protective component of the present invention;

[0034] Figure 8 This is a schematic diagram of the support component structure of the present invention.

[0035] In the diagram: 1. Manhole cover mounting ring; 11. Inner slot; 2. Manhole cover body; 21. Upper cover; 211. Drainage hole; 212. Hexagonal hole; 22. Lower cover; 221. Water outlet; 3. Locking assembly; 31. Insertion slot; 311. Internal slot; 32. First slot; 33. Second slot; 34. First locking block; 35. Second locking block; 36. Limiting block; 37. Drive assembly; 371. Fixing plate; 372. Drive motor; 373. Linkage ring; 374. Drive gear; 375. Lead screw; 4. Filter assembly; 41. Filter bag; 42. Placement slot; 43. Hook; 5. Protective assembly; 51. Ring steel pipe; 52. Strip steel pipe; 53. Penetrating steel rope; 54. Support assembly; 541. Upper support plate; 542. Lower support plate; 543. Connecting rod; 544. Diagonal support rod. Detailed Implementation

[0036] 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.

[0037] To address the issue that existing manhole cover structures, due to their integral design, cannot allow for the disassembly of the upper and lower covers, nor can they be disassembled individually, please refer to [link to relevant documentation]. Figures 1-3 This embodiment provides the following technical solution:

[0038] A manhole cover for municipal engineering with an internal protective structure and its implementation method, including a manhole cover mounting ring 1, wherein the manhole cover mounting ring 1 has an inner slot 11 for mounting the manhole cover body 2, and a locking assembly 3 is provided between the outer wall of the manhole cover body 2 and the inner wall of the manhole cover mounting ring 1.

[0039] The manhole cover body 2 also includes a filter assembly 4, which is located inside the manhole cover body 2, and a protective assembly 5 is located below the manhole cover body 2.

[0040] The manhole cover body 2 includes an upper cover 21 and a lower cover 22. A filter assembly 4 is provided between the upper cover 21 and the lower cover 22. Two drainage holes 211 are provided on the upper cover 21, and a water outlet 221 is provided on the upper part of the lower cover 22. The filter assembly 4 includes a filter bag 41, a placement groove 42, and a hook 43. The placement groove 42 is located between the upper cover 21 and the lower cover 22. A ring of hooks 43 is provided below the upper cover 21. The filter bag 41 is fixedly installed on the hooks 43. The drainage holes 211 are used for drainage of the manhole cover. When the water flows through the filter bag 41, it can filter impurities in the water, prevent impurities from clogging the internal water outlet 221, and increase drainage efficiency.

[0041] The locking assembly 3 includes an insertion groove 31, a first locking groove 32, a second locking groove 33, a first locking block 34, a second locking block 35, a limiting block 36, and a driving assembly 37. The insertion groove 31 is formed on the inner wall of the manhole cover mounting ring 1. The first locking groove 32 and the second locking groove 33 extend from the side end of the insertion groove 31. The first locking block 34 and the second locking block 35 are fixed on the outer wall of the manhole cover body 2 and are movably inserted into the insertion groove 31. An internal groove 311 extends below the insertion groove 31. The limiting block 36 is disposed in the internal groove 311 and is mounted on the driving assembly 37. The driving assembly 37 is fixed to the bottom end of the manhole cover mounting ring 1. The first locking groove 32, the second locking groove 33, the first locking block 34, and the second locking block 35 are... Multiple limiting blocks 36 are provided. The second slot 33 is located above the first slot 32. The first block 34 is fixed on the outer wall of the lower cover 22, and the second block 35 is fixed on the outer wall of the upper cover 21. The limiting block 36 is movably inserted into the insertion groove 31. The first block 34 and the second block 35 on the upper cover 21 and the lower cover 22 are aligned with the insertion groove 31 on the inner wall of the manhole cover mounting ring 1. By rotating the upper cover 21 and the lower cover 22, the first block 34 and the second block 35 are screwed into the first slot 32 and the second slot 33, which effectively limits the manhole cover body 2. The first block 34 and the second block 35 are screwed into the slots for limiting support, which can increase the support performance of the entire manhole cover body 2 and improve the stability of the manhole cover body 2.

[0042] The drive assembly 37 includes a fixed plate 371, a drive motor 372, a linkage ring 373, a drive gear 374, and a lead screw 375. The fixed plate 371 is fixed to the inner wall of the manhole cover mounting ring 1 by a support rod. The drive motor 372 is mounted on the fixed plate 371, and the output end of the drive motor 372 is connected to the center plate of the linkage ring 373. The lead screw 375 is installed through the built-in groove 311, and a limit block 36 is sleeved on the lead screw 375. The drive gear 374 is installed below the lead screw 375. The surface of ring 373 is provided with toothed grooves that mesh with drive gear 374. Drive motor 372 drives linkage ring 373 to rotate. Under the action of toothed grooves and drive gear 374 meshing, it drives lead screw 375 to rotate, thereby driving limit block 36 to move on lead screw 375. Limit block 36 moves upward and blocks the first slot 32 and the second slot 33, effectively locking the first block 34 and the second block 35, realizing the locking of manhole cover body 2, preventing the manhole cover body 2 from being stolen, and improving the safety of use.

[0043] A hexagonal hole 212 is provided at the center of the upper cover 21 and the lower cover 22. A pull-out groove is provided on the inner wall of the hexagonal hole 212. The drive component 37 can drive the limiting block 36 to move down, open the second slot 33, insert the hexagonal lifting rod into the hexagonal hole 212, and rotate the lifting rod on the outside of the hexagonal lifting rod to cooperate with the pull-out groove to unscrew the second slot 35 on the outside of the upper cover 21. Then the upper cover 21 is lifted out by the hexagonal lifting rod, opening the placement groove 42, which facilitates the cleaning of impurities filtered by the filter bag 41 and prevents the accumulation of impurities from affecting the drainage effect.

[0044] To address the issue of poor overall support performance in existing manhole covers, which fails to provide adequate support and leads to low safety during use, please refer to [link to relevant documentation]. Figures 6-8 This embodiment provides the following technical solution:

[0045] The protective component 5 includes annular steel pipes 51, strip steel pipes 52, penetrating steel ropes 53, and support components 54. Multiple strip steel pipes 52 are arranged in a ring, with their centers welded and fixed. Multiple annular steel pipes 51 are sequentially fitted onto the annular strip steel pipes 52. The strip steel pipes 52 and annular steel pipes 51 are staggered and welded to form a circular mesh. The circular mesh formed by the strip steel pipes 52 and annular steel pipes 51 has two layers, and the outer walls of both layers of strip steel pipes 52 are fixed to the well. On the inner wall of the manhole cover mounting ring 1, there are interlaced penetrating steel ropes 53 inside the strip steel pipe 52, and the interlaced penetrating steel ropes 53 form a circular steel mesh. One end of the penetrating steel rope 53 is connected to the inner wall of the manhole cover mounting ring 1. A support component 54 is set between the two layers of circular mesh pipes. The circular steel mesh is set inside the two layers of circular mesh pipes, which increases the support effect and improves the toughness of the circular mesh pipes. When the manhole cover body 2 is damaged, it is supported by the two layers of circular mesh pipes to prevent people from falling into the manhole and getting injured, thus improving the support effect.

[0046] The support assembly 54 includes an upper support plate 541, a lower support plate 542, a connecting rod 543, and an inclined support rod 544. The upper support plate 541 and the lower support plate 542 are connected by the connecting rod 543. An inclined support rod 544 is fixed on the outer wall of the connecting rod 543. One end of the inclined support rod 544 is connected to the inner wall of the manhole cover mounting ring 1. The rod is set between the two layers of circular mesh pipes for support, which greatly increases the load-bearing effect. The multiple inclined support rods 544 are fixed to increase the support strength.

[0047] To better demonstrate the usage process of manhole covers with internal protective structures in municipal engineering projects, this embodiment proposes a method for implementing manhole covers with internal protective structures in municipal engineering projects, including the following steps:

[0048] Step 1: Align the first locking block 34 and the second locking block 35 on the upper cover 21 and the lower cover 22 with the insertion groove 31 on the inner wall of the manhole cover mounting ring 1, and place the upper cover 21 and the lower cover 22 into the inner locking groove 11.

[0049] Step 2: Rotate the upper cover 21 and the lower cover 22 to screw the first locking block 34 and the second locking block 35 into the first locking slot 32 and the second locking slot 33. The limiting block 36 moves upward under the drive of the driving component 37 and blocks the insertion slot 31, locking the first locking block 34 and the second locking block 35.

[0050] Step 3: Two layers of circular mesh pipes, formed by welding strip steel pipes 52 and annular steel pipes 51, support the upper cover 21 and the lower cover 22;

[0051] Step 4: The two drainage holes 211 on the upper cover 21 are used for drainage. When water passes through the filter bag 41 in the placement tank 42, the filter bag 41 filters the impurities in the water.

[0052] Working principle: When using manhole covers, according to Figure 1 , Figure 2 and Figure 3 The drain hole 211 is used for drainage from the well cover. When the water flows through the filter bag 41, it can filter impurities in the water, preventing impurities from clogging the internal water outlet 221. Figure 4 and Figure 5 Rotating the upper cover 21 and lower cover 22 screws the first locking block 34 and the second locking block 35 into the first locking groove 32 and the second locking groove 33, effectively limiting the manhole cover body 2. The drive motor 372 drives the linkage ring 373 to rotate, and under the action of the tooth groove and the drive gear 374 meshing, it drives the lead screw 375 to rotate, thereby driving the limiting block 36 to move on the lead screw 375. The limiting block 36 moves upward, blocking the first locking groove 32 and the second locking groove 33, effectively locking the first locking block 34 and the second locking block 35. Figure 6 , Figure 7 and Figure 8 The two layers of circular mesh pipes are equipped with circular steel mesh, which increases the support effect and improves the toughness of the circular mesh pipes. When the manhole cover body 2 is damaged, the two layers of circular mesh pipes will provide support to prevent people from falling into the manhole and getting injured.

[0053] 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 process, method, article, or apparatus.

[0054] 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 manhole cover for municipal engineering with an internal protective structure, comprising a manhole cover mounting ring (1), characterized in that, The manhole cover mounting ring (1) has an inner slot (11) for mounting the manhole cover body (2). A locking assembly (3) is provided between the outer wall of the manhole cover body (2) and the inner wall of the manhole cover mounting ring (1). The manhole cover body (2) also includes a filter assembly (4), which is located inside the manhole cover body (2). A protective assembly (5) is provided below the manhole cover body (2). The manhole cover body (2) includes an upper cover (21) and a lower cover (22). The locking assembly (3) includes an insertion groove (31), a first slot (32), a second slot (33), a first locking block (34), and a second locking block (35). The manhole cover assembly includes a locking block (35), a limiting block (36), and a drive assembly (37). A mating groove (31) is formed on the inner wall of the manhole cover mounting ring (1). A first locking groove (32) and a second locking groove (33) extend from the side end of the mating groove (31). A first locking block (34) and a second locking block (35) are fixed to the outer wall of the manhole cover body (2). The first locking block (34) and the second locking block (35) are movably mated with the mating groove (31). An internal groove (311) extends below the mating groove (31), and a limiting block (36) is disposed within the internal groove (311). The limiting block (36) is mounted on the drive assembly. On (37), the drive assembly (37) is fixed to the bottom end of the manhole cover mounting ring (1). Multiple first slots (32), second slots (33), first blocks (34), second blocks (35), and limiting blocks (36) are provided. The second slot (33) is located above the first slot (32). The first blocks (34) are fixed to the outer side wall of the lower cover (22). The second blocks (35) are fixed to the outer side wall of the upper cover (21). The limiting block (36) is movably inserted into the insertion groove (31). The drive assembly (37) includes a fixing plate (371) and a drive motor (372). The linkage ring (373), drive gear (374) and lead screw (375) are provided. The fixing plate (371) is fixed to the inner wall of the manhole cover mounting ring (1) by the support rod. The drive motor (372) is installed on the fixing plate (371). The output end of the drive motor (372) is connected to the center plate of the linkage ring (373). The lead screw (375) is installed through the built-in groove (311). The limiting block (36) is sleeved on the lead screw (375). The drive gear (374) is installed below the lead screw (375). The surface of the linkage ring (373) is provided with a tooth groove that meshes with the drive gear (374).

2. A municipal engineering manhole cover with an internal protective structure according to claim 1, characterized in that: A filter assembly (4) is provided between the upper cover (21) and the lower cover (22). The upper cover (21) has two drainage holes (211), and the lower cover (22) has a water outlet hole (221). A hexagonal hole (212) is provided at the center of the upper cover (21) and the lower cover (22). A pull-out groove is provided on the inner wall of the hexagonal hole (212).

3. A municipal engineering manhole cover with an internal protective structure according to claim 2, characterized in that: The filter assembly (4) includes a filter bag (41), a placement groove (42) and a hook (43). The placement groove (42) is located between the upper cover (21) and the lower cover (22). A ring of hooks (43) is provided below the upper cover (21), and the filter bag (41) is fixedly installed on the hooks (43).

4. A municipal engineering manhole cover with an internal protective structure according to claim 3, characterized in that: The protective component (5) includes annular steel pipe (51), strip steel pipe (52), penetrating steel rope (53) and support component (54). Multiple strip steel pipes (52) are provided, and the multiple strip steel pipes (52) are arranged in annularly and fixed at their center. Multiple annular steel pipes (51) are sequentially sleeved on the annularly arranged strip steel pipes (52). The strip steel pipes (52) and annular steel pipes (51) are staggered and welded to form a circular mesh.

5. A municipal engineering manhole cover with an internal protective structure according to claim 4, characterized in that: The circular mesh pipe formed by welding strip steel pipe (52) and ring steel pipe (51) has two layers, and the outer walls of the two layers of strip steel pipe (52) are fixed on the inner wall of the manhole cover mounting ring (1). Interlaced penetrating steel ropes (53) are installed inside the strip steel pipe (52), and the penetrating steel ropes (53) are interlaced to form a circular steel mesh. One end of the penetrating steel rope (53) is connected to the inner wall of the manhole cover mounting ring (1). A support component (54) is installed between the two layers of circular mesh pipe.

6. A municipal engineering manhole cover with an internal protective structure according to claim 5, characterized in that: The support assembly (54) includes an upper support plate (541), a lower support plate (542), a connecting rod (543), and an inclined support rod (544). The upper support plate (541) and the lower support plate (542) are connected by the connecting rod (543). An inclined support rod (544) is fixed on the outer wall of the connecting rod (543). One end of the inclined support rod (544) is connected to the inner wall of the manhole cover mounting ring (1).

7. A method for implementing a municipal engineering manhole cover with an internal protective structure according to claim 6, characterized in that: Includes the following steps: Step 1: Align the first locking block (34) and the second locking block (35) on the upper cover (21) and the lower cover (22) with the insertion groove (31) on the inner wall of the manhole cover mounting ring (1), and place the upper cover (21) and the lower cover (22) into the inner locking groove (11); Step 2: Rotate the upper cover (21) and the lower cover (22) to screw the first locking block (34) and the second locking block (35) into the first locking slot (32) and the second locking slot (33). The limiting block (36) moves upward under the drive of the drive component (37) and blocks the insertion slot (31) to lock the first locking block (34) and the second locking block (35). Step 3: Two layers of circular mesh pipes, formed by welding strip steel pipes (52) and annular steel pipes (51), support the upper cover (21) and the lower cover (22); Step 4: The two drainage holes (211) on the upper cover (21) are used for drainage. When the water passes through the filter bag (41) in the placement tank (42), the filter bag (41) filters the impurities in the water.

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