A multifunctional composite manhole cover

Abstract

This application relates to a multifunctional composite manhole cover, comprising an outer frame and a cover body. The inner circumference of the outer frame is integrally provided with an annular overlapping edge. The cover body overlaps the overlapping edge and has several drainage holes. The cover body comprises a main body adapted to the outer frame, which overlaps the overlapping edge. An installation groove is formed on the upper surface of the main body. A lamp, a photovoltaic power generation device, and a battery are arranged within the installation groove. The photovoltaic power generation device is connected to the battery to supply power. The lamp is connected to the battery, and a light-controlled switch is provided between the lamp and the battery. The cover body also includes a transparent cover plate installed at the opening of the installation groove. This application has the advantage of providing illumination for the environment at night.

Description

Technical Field

[0001] This application relates to the technical field of waste plastic recycling, and in particular to a multifunctional composite manhole cover. Background Technology

[0002] Manhole covers play a vital role in parks, protecting underground facilities such as cables, water pipes, and sewers, while also ensuring the safety of pedestrians and visitors. Currently, in some municipal parks, after installation, unevenness often exists between the manhole cover and the ground due to limitations in terrain and installation precision. Furthermore, parks are generally densely vegetated and poorly lit at night. The lack of necessary warnings increases the risk of accidents when people approach manhole covers at night. Therefore, providing manhole covers that offer both warning and illumination in the dark is a pressing issue that needs to be addressed. Summary of the Invention

[0003] To address the current issues of single-function manhole covers and numerous safety risks posed by the lack of lighting at night, this application provides a multifunctional composite manhole cover. The multifunctional composite manhole cover includes an outer frame and a cover body. The inner circumference of the outer frame is uniformly provided with an annular overlapping edge. The cover body overlaps the overlapping edge and has several drainage holes. The cover body includes a main body adapted to the outer frame, which overlaps the overlapping edge. An installation groove is formed on the upper surface of the main body. A lamp, a photovoltaic power generation device, and a battery are arranged within the installation groove. The photovoltaic power generation device is connected to the battery to supply power. The lamp is connected to the battery, and a light-controlled switch is provided between the lamp and the battery. The cover body also includes a transparent cover plate installed at the opening of the installation groove.

[0004] By adopting the above solution, when the external light intensity decreases to the critical value of the light-controlled switch, the switch turns on, illuminating the lamp. At this time, the light emitted by the lamp can pass through the cover plate and illuminate the surrounding environment. Simultaneously, the photovoltaic power generation equipment can generate electricity, achieving energy conservation and emission reduction.

[0005] Furthermore, the mounting groove has an overlapping groove along its edge, and the edge of the cover plate overlaps into the overlapping groove. The cover also includes several support members disposed within the mounting groove, the support members being used to support the cover plate.

[0006] By adopting the above solution, the overlap of the cover plate within the overlap groove ensures the flatness of the upper surface of the manhole cover. In addition, the setting of support components can increase the support for the cover plate and ensure its stability.

[0007] Furthermore, the drainage hole passes through the cover plate, support member and body in sequence from top to bottom.

[0008] By adopting the above solution, the drainage hole is located at the position of the support, which makes it easy to clean the drainage hole after the cover plate is removed.

[0009] Furthermore, the drain hole is a circular hole, and a fixing member is provided inside the drain hole. The fixing member includes an integrally formed middle part and a pressing part. The middle part is a hollow tubular structure adapted to the drain hole. The pressing part is sleeved onto the end of the middle part. The pressing part is an annular shape adapted to the middle part. The middle part is threaded to the cover plate or the body, and the pressing part presses the cover plate.

[0010] By adopting the above solution, the middle part of the fastener can seal the gap between the cover plate and the support, preventing sewage from entering the installation groove. At the same time, the fastener can also fix the state of the cover plate, making the state of the cover plate more stable. In addition, since the fastener can be detachably installed to the support or the body, it is also convenient to clean the drainage hole.

[0011] Furthermore, the upper surface of the second shielding member is fixed with several plugs that are adapted to the first water passage hole. Each plug corresponds to one of the several water passage holes, and when the plug is inserted into the first water passage hole, the upper surface of the plug is flush with the upper surface of the shielding member.

[0012] By adopting the above solution, when the drain hole needs cleaning, after pulling the first and second shielding parts upwards to the top of the drain hole via the connecting rod, the insert will fill the drain hole, making it easier to clean up debris.

[0013] Furthermore, both the connecting hole and the connecting rod have polygonal cross-sections.

[0014] By adopting the above solution, relative rotation between the connecting rod and the first shielding component is avoided as much as possible, making the second shielding component more stable.

[0015] Furthermore, a filter screen is detachably installed on the lower surface of the second shielding member, and several of the second water passage holes are located inside the filter screen.

[0016] By adopting the above solution, the filter screen can, on the one hand, prevent external debris from entering the drainage well through water passage one and water passage two as much as possible; on the other hand, during the drainage process, the filter screen can filter the sewage entering the well cover, thus preventing external debris from entering the drainage well as much as possible.

[0017] Furthermore, a plurality of arrangement slots are vertically formed on the inner circumferential surface of the middle part, and a plurality of elastic elements are provided, with each elastic element corresponding to one of the arrangement slots. The elastic elements are disposed in the arrangement slots, with the bottom end of the elastic element fixedly connected to the middle part, and a snap-fit ​​element fixedly connected to the top end of the elastic element. The snap-fit ​​element has a slot that cooperates with a blocking element, and the blocking element is slidably connected to the slot.

[0018] By adopting the above solution, when cleaning the drain hole, pull the first shield to the top position of the middle part to disengage the snap fastener from the arrangement groove, and then tilt the snap fastener to one side to remove the first shield. This makes it easier to clean the first water passage hole, the second water passage hole, and the filter screen, and also facilitates the replacement and installation of the first shield.

[0019] Furthermore, a plurality of arrangement slots are vertically formed on the inner circumferential surface of the middle part, and a plurality of elastic elements are provided, with each elastic element corresponding to one of the arrangement slots. The elastic elements are disposed in the arrangement slots, with the bottom end of the elastic element fixedly connected to the middle part, and a snap-fit ​​element fixedly connected to the top end of the elastic element. The snap-fit ​​element has a slot that cooperates with a blocking element, and the blocking element is slidably connected to the slot.

[0020] By adopting the above solution, when disassembling the first blocking component, firstly, the connecting rod is used to pull the snap-fit ​​component to the top of the middle part. Then, the sliding part is slid to make the sliding part overlap the top edge of the middle part. At this time, the cooperation between the sliding part and the elastic component can fix the state of the snap-fit ​​component. At the same time, the slot is opened, and the staff can directly take out the first blocking component from the slot. The operation is simple and convenient.

[0021] Furthermore, an elastic member is fixedly connected between the slider and the sliding part, and when the sliding part is disengaged from the fixed member, the sliding part moves away from the connecting rod under the action of the elastic member;

[0022] The connecting rod includes a main body and a rotating part. The main body passes through the connecting hole and is fixedly connected to the second shielding member. The rotating part is rotatably connected to the top of the main body. Several pull ropes are fixedly connected to the rotating part. Each of the pull ropes corresponds to one of the sliding parts. A pin is fixedly connected to the pull rope. An insertion hole is opened on the upper surface of the sliding part. The pin slides and is connected to the insertion hole.

[0023] By adopting the above solution, when the sliding part of the snap-fit ​​component disengages from the fixing frame, the sliding part moves away from the connecting rod under the action of the elastic component and then overlaps the upper surface of the fixing component. At this time, there is no need for manual pushing of the sliding part, which is more labor-saving. At the same time, the elastic component can also make the connection between the sliding part and the base part more stable. After cleaning the filter screen, the cleaning component is placed in the fixing component, and several pins are inserted into the holes of several sliding parts in sequence. Then, the rotating part of the connecting rod is rotated. The rotating part drives the sliding part to move towards the connecting rod through the pull rope until it is completely retracted into the channel of the fixing component. At this time, the snap-fit ​​component moves downward into the fixing component under the action of the elastic component. The operation is simple and convenient.

[0024] In summary, the present invention has at least the following beneficial effects:

[0025] 1. By installing lights, photovoltaic power generation equipment, and batteries inside the manhole cover, when the external light weakens to the threshold of the light-controlled switch, the switch turns on, illuminating the lights. The light emitted from the lights can then pass through the cover and illuminate the surrounding environment. Simultaneously, the photovoltaic power generation equipment generates electricity, achieving energy conservation and emission reduction.

[0026] 2. By setting the fastener at the location of the drain hole, the middle part of the fastener can seal the gap between the cover plate and the support, preventing sewage from entering the installation groove. At the same time, the fastener can also fix the state of the cover plate, making the state of the cover plate more stable. In addition, since the fastener can be detached and installed to the support or the body, it is also convenient to clean the drain hole.

[0027] 3. By setting up a snap-fit ​​component and an elastic component, and setting the snap-fit ​​component in the form of a base and a sliding part, when disassembling the first shielding component, first pull the snap-fit ​​component to the top of the middle part through the connecting rod, and then slide the sliding part to make the sliding part overlap the top edge of the middle part. At this time, the cooperation between the sliding part and the elastic component can fix the state of the snap-fit ​​component, and at the same time the slot is opened, so the operator can directly take out the first shielding component from the slot. The operation is simple and convenient. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the overall structure of the manhole cover in this embodiment;

[0029] Figure 2 This is an exploded view of the manhole cover in this embodiment;

[0030] Figure 3 This is a cross-sectional view of the fastener shown in this embodiment;

[0031] Figure 4 This is a schematic diagram of the cleanup component structure in an embodiment of this application;

[0032] Figure 5 yes Figure 3 A magnified view of part A in the diagram.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Outer frame; 11. Overlap edge; 2. Cover; 21. Drain hole; 22. Body; 221. Mounting groove; 2211. Light fixture; 2212. Photovoltaic power generation equipment; 2213. Battery; 222. Overlap groove; 23. Cover plate; 24. Support component; 3. Fixing component; 31. Middle part; 311. Arrangement groove; 32. Pressing part; 4. Cleaning assembly; 41. Shielding component one; 411. Water passage hole one; 412. Connection hole; 42 421. Two shielding parts; 422. Two water passage holes; 43. Insert; 44. Connecting rod; 45. Overlapping part; 46. Pull ring; 47. Main body; 48. Rotating part; 49. Pull rope; 40. Pin; 41. Filter screen; 42. Clip; 43. Slot; 44. Base; 45. Slider; 45. Sliding part; 45. Track groove; 45. Hole; 5. Elastic part; 6. Elastic component. Detailed Implementation

[0035] The application provides a multifunctional composite manhole cover, referring to... Figure 1 and Figure 2 It includes a circular outer frame 1 and a circular cover 2 that works in conjunction with the outer frame 1. The inner circumferential surface of the outer frame 1 is integrally provided with an annular overlapping edge 11. The cover 2 overlaps to the overlapping edge 11 and has several drainage holes 21.

[0036] The cover 2 includes a body 22 and a cover plate 23. The body 22 is used to realize the main function of the cover 2. A circular mounting groove 221 is coaxially formed on the upper surface of the body 22. An annular overlapping groove 222 that fits the cover plate 23 is provided at the upper edge of the mounting groove 221. The cover plate 23 is placed into the overlapping groove 222, and when the cover plate 23 is placed into the overlapping groove 222, the upper surface of the cover plate 23 is flush with the upper surface of the body 22 to ensure the flatness of the upper surface of the cover 2. In this design, the cover plate 23 is made of a transparent material, such as tempered glass, which allows for... Light passes through the cover plate 23 and enters the mounting groove 221. Correspondingly, a lamp 2211 is installed in the mounting groove 221. The lamp 2211 is fixedly installed at the center of the mounting groove 221. A photovoltaic power generation device 2212 is installed around the lamp 2211 in the mounting groove 221. At the same time, a storage battery 2213 is also installed in the mounting groove 221. The photovoltaic power generation device 2212 is connected to the storage battery 2213 to charge the storage battery 2213. The storage battery 2213 is connected to the lamp 2211, and a light control switch is installed between the storage battery 2213 and the lamp 2211.

[0037] When the external light intensity decreases to the threshold of the light-controlled switch, the switch turns on, illuminating lamp 2211. At this time, the light emitted by lamp 2211 can pass through cover plate 23 and illuminate the surrounding environment. Simultaneously, photovoltaic power generation equipment 2212 can generate electricity, achieving energy conservation and emission reduction.

[0038] To improve the stability of the cover plate 23, a number of support members 24 are provided in the mounting groove 221. The support members 24 are evenly arranged around the lamp 2211. The bottom of the support members 24 is fixed to the bottom wall of the mounting groove 221, and the top of the support members 24 abuts against the cover plate 23 to support the cover plate 23, making the cover plate 23 more stable.

[0039] Several drainage holes 21 correspond one-to-one with several support members 24. The drainage holes 21 pass downward through the cover plate 23, the support members 24 and the body 22 in sequence. The drainage holes 21 are set at the position of the support members 24, so that the drainage holes 21 can be cleaned after the cover plate 23 is removed.

[0040] A fastener 3 is provided between the cover plate 23 and the body 22. The fastener 3 is used to fix the cover plate 23 to the body 22, so that the cover plate 23 can be more stable.

[0041] Reference Figure 3 Furthermore, the fastener 3 includes an integrally formed intermediate part 31 and a pressing part 32. The intermediate part 31 is a structure adapted to the drain hole 21. The intermediate part 31 passes through the drain hole 21 and is threadedly connected to the support member 24. The pressing part 32 is a ring-shaped structure and is sleeved on the top of the intermediate part 31. The pressing part 32 presses the cover plate 23. In order to ensure the flatness of the cover plate 23, a hidden groove is provided on the upper surface of the cover plate 23 around the drain hole 21, and the pressing part 32 is disposed in the hidden groove.

[0042] Rainwater can enter the drainage well through the middle part 31 of the fastener 3. At the same time, people can remove the fastener 3 from the drainage hole 21 to clean the middle part 31 of the fastener 3 to keep the drainage hole 21 unobstructed. In addition, when repairing the lamp 2211, the battery 2213 or the photovoltaic power generation equipment 2212, the fastener 3 can be cleaned at the same time to keep the drainage hole 21 unobstructed.

[0043] A cleaning component 4 is provided in the middle part 31 of the fastener 3 to facilitate the cleaning of the middle part 31.

[0044] Reference Figure 3 and Figure 4Specifically, the cleaning component 4 includes a first shielding component 41 and a second shielding component 42, which are arranged vertically and adapted to the middle part 31. An elastic element 5 is provided between the first shielding component 41 and the middle part 31. The first shielding component 41 has a plurality of water passage holes 411, which are evenly arranged around the axis of the first shielding component 41. The second shielding component 42 has a plurality of water passage holes 421, which are evenly arranged around the axis of the second shielding component, and the first water passage holes 411 and the second water passage holes 421 are staggered. A connecting hole 412 is provided on the shielding member 41. The connecting hole 412 can be opened at any position of the shielding member 41. In this case, the connecting hole 412 is opened at the center position of the shielding member 41. A connecting rod 43 is slidably connected in the connecting hole 412. The bottom end of the connecting rod 43 is fixed to the center position of the shielding member 42. An overlapping member 431 is fixed on the connecting rod 43. The overlapping member 431 is located above the shielding member 41 and overlaps with the shielding member 41.

[0045] After rainwater and other wastewater enter the intermediate section 31, they are discharged through water hole 1 411 and water passage hole 2 421. When external debris falls into the drainage hole 21, the cooperation of the shielding member 1 41 and the shielding member 2 42 can shield the debris. When a large amount of debris accumulates, the staff can easily clean the intermediate section 31 using the cleaning component 4. During the cleaning process, the staff pulls the connecting rod 43 upward. The connecting rod 43 first moves the shielding member 2 42 upward, so that the shielding member 2 42 is in contact with the shielding member 1 41. Because of the staggered arrangement of water passage hole 1 411 and water passage hole 2 421, debris is prevented from falling into the drainage well through water passage hole 1 411 and water passage hole 2 421. Then, the staff continues to pull the connecting rod 43, so that the shielding member 1 41 and the shielding member 2 42 continue to move upward to the top of the drainage hole 21, at which point the debris can be cleaned.

[0046] To facilitate pulling the connecting rod 43, a pull ring 432 is provided at the top of the connecting rod 43.

[0047] The shape of the connecting hole 412 can be circular, triangular, polygonal, etc. In this case, in order to make the second shielding member 42 more stable, the shape of the connecting hole 412 is set as a polygon, and the cross-section of the corresponding connecting rod 43 is also a polygon that matches the connecting hole 412. Through the above settings, relative rotation between the connecting rod 43 and the first shielding member 41 is avoided as much as possible, making the second shielding member 42 more stable.

[0048] Several inserts 422 are fixedly attached to the upper surface of the second shield 42. Each insert 422 corresponds to a specific water passage hole. When the second shield 42 and the first shield 41 are fitted together, the inserts 422 extend into the first water passage hole 411, with the upper surface of the inserts 422 flush with the upper surface of the first shield 41. When the drain hole 21 needs cleaning, after pulling the first shield 41 and the second shield 42 upwards to the top of the drain hole 21 via the connecting rod 43, the inserts 422 will fill the first water passage hole 411, facilitating the cleaning of debris.

[0049] A filter screen 44 is provided below the second shield 42. The filter screen 44 has an opening at the top and is fitted onto the outer perimeter of the second shield 42. The filter screen 44 and the second shield 42 are connected by threads. The filter screen 44 can, on the one hand, prevent external debris from entering the drainage well through the first water passage 411 and the second water passage 421 as much as possible. On the other hand, during the drainage process, the filter screen 44 can filter the sewage entering the well cover, thus preventing external debris from entering the drainage well as much as possible.

[0050] Reference Figure 3 and Figure 5 A plurality of arrangement grooves 311 are vertically formed on the inner circumferential surface of the middle part 31. The top of the arrangement grooves 311 extends to the upper surface of the middle part 31. A plurality of elastic members 5 are provided between the corresponding blocking member 41 and the middle part 31. The plurality of elastic members 5 correspond one-to-one with the plurality of arrangement grooves 311. The elastic members 5 are vertically arranged in the arrangement grooves 311. The bottom end of the elastic member 5 is fixed to the lower wall of the arrangement groove 311. The top end of the elastic member 5 is provided with a snap-fit ​​member 45. The snap-fit ​​member 45 is slidably connected to the arrangement groove 311. The snap-fit ​​member 45 is provided with a snap-fit ​​groove 451 that is used in conjunction with the blocking member 41. The blocking member 41 is arranged in the snap-fit ​​groove 451.

[0051] When cleaning the drain hole 21, pull the first shield 41 to the top position of the middle part 31 to disengage the snap fastener 45 from the arrangement groove 311. Then tilt the snap fastener 45 to one side to remove the first shield 41, which facilitates the cleaning of the first water passage hole 411, the second water passage hole 421 and the filter screen, and also facilitates the replacement and installation of the first shield 41.

[0052] Furthermore, the snap-fit ​​component 45 includes a base portion 452 and a sliding portion 453. The base portion 452 is located below the sliding portion 453. The base portion 452 is slidably connected to the elastic member 5. The base portion 452 is fixedly connected to the top of the elastic member 5. A slider 4512 is integrally provided on the top of the base portion 452. A track groove 4531 adapted to the slider 4512 is provided on the corresponding sliding portion 453. The slider 4512 is slidably connected to the track groove 4531.

[0053] When disassembling the shield 41, first pull the snap-fit ​​45 to the top of the middle part 31 using the connecting rod 43. Then slide the sliding part 453 to position it at the top edge of the middle part 31. At this time, the cooperation between the sliding part 453 and the elastic member 5 can fix the state of the snap-fit ​​45. At the same time, the slot 451 is opened, and the operator can directly remove the shield 41 from the slot 451. The operation is simple and convenient.

[0054] A spring element 6 is provided in the track groove 4531. The spring element 6 is fixed between the slider 4512 and the sliding part 453. When the sliding part 453 of the snap-fit ​​part 45 is disengaged from the fixed frame 3, the sliding part 453 moves away from the connecting rod 43 under the action of the spring element and then overlaps the upper surface of the fixed part 3. At this time, it is no longer necessary to push the sliding part 453 manually, which saves more effort. At the same time, the spring element 6 can also make the connection between the sliding part 453 and the base part 452 more stable.

[0055] Reference Figure 3 Furthermore, the connecting rod 43 includes a main body 433 and a rotating part 434. The main body 433 passes through the connecting hole 412 and is fixedly connected to the shielding member 421. The rotating part 434 is a shell-shaped structure with a circular cross-section. The rotating part 434 is sleeved on the top of the main body 433, and the rotating part 434 and the main body 433 are rotatably connected. The pull ring 432 is fixedly connected to the top of the rotating part 434.

[0056] Reference Figure 3 and Figure 5 A plurality of pull ropes 4341 are fixedly connected to the outer peripheral surface of the rotating part 434. The plurality of pull ropes 4341 correspond one-to-one with a plurality of sliding parts 453. A pin 4342 is fixedly connected to the end of the pull rope 4341 away from the connecting rod 43. The upper surface of the corresponding sliding part 453 is provided with a socket 4532 for use with the pin 4342. The pin 4342 is inserted into the socket 4532, and the pin 4342 and the socket 4532 are slidably connected.

[0057] After cleaning the filter screen 44, the cleaning component 4 is placed inside the fixing part 3, so that several pins 4342 are inserted into the holes 4532 of several sliding parts 453 in sequence. Then, the rotating part 434 of the connecting rod 43 is rotated. The rotating part 434 drives the sliding part 453 to move towards the connecting rod 43 through the pull rope 4341 until it is completely retracted into the hole of the fixing part 3. At this time, the snap-fit ​​part 45 moves downward into the fixing part 3 under the action of the elastic part 5. The operation is simple and convenient.

[0058] The implementation principle of this solution is as follows: During the day, the photovoltaic power generation device 2212 inside the manhole cover can charge the storage battery 2213, which can achieve the effect of energy saving and emission reduction. When the ambient light brightness is lower than the set value of the light control switch, the lamp 2211 turns on to illuminate the surrounding environment and at the same time reminds pedestrians to reduce safety risks.

[0059] When it is rainy, rainwater flows to the location of the drain hole 21 and enters the middle part 31 of the fixing part 3. It then passes through the water hole 411, the water passage hole 421 and the filter screen into the drain well.

[0060] When the filter screen 44 becomes clogged and needs cleaning, the worker hooks the connecting ring 432 on the connecting rod 43 with a hook and pulls it upward. During this process, the second shield 42 first moves upward to the position where it abuts against the first shield 41. After the second shield 42 abuts against the first shield 41, the insert 422 on the second shield 42 enters the water passage hole 411. The upper surface of the insert 422 is flush with the second shield 42. Then, the first shield 41 is pulled to the top position of the middle part 31 and the sliding part 453 is slid to the top edge of the middle part 31. At this time, the cooperation between the sliding part 453 and the elastic member 5 can fix the state of the snap-fit ​​45. At the same time, the slot 451 is opened, and the worker can directly remove the first shield 41 from the slot 451 to clean the filter screen.

[0061] After cleaning the filter screen 44, the cleaning component 4 is placed inside the fixing part 3, so that several pins 4342 are inserted into the holes 4532 of several sliding parts 453 in sequence. Then, the rotating part 434 of the connecting rod 43 is rotated. The rotating part 434 drives the sliding part 453 to move towards the connecting rod 43 through the pull rope 4341 until it is completely retracted into the hole of the fixing part 3. At this time, the snap-fit ​​part 45 moves downward into the fixing part 3 under the action of the elastic part 5. The operation is simple and convenient.

[0062] The embodiments described herein are preferred embodiments and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all effective changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A multifunctional composite manhole cover, comprising an outer frame (1) and a cover body (2), wherein the inner circumference of the outer frame (1) is integrally provided with an annular overlapping edge (11), the cover body (2) overlaps the overlapping edge (11), and the cover body (2) is further provided with a plurality of drainage holes (21), characterized in that: The cover (2) includes a body (22) adapted to the outer frame (1), the body (22) being attached to the overlapping edge (11), and an installation groove (221) being provided on the upper surface of the body (22). A lamp (2211), a photovoltaic power generation device (2212), and a storage battery (2213) are arranged in the installation groove (221). The photovoltaic power generation device (2212) is connected to the storage battery (2213) to supply power to the storage battery (2213). The lamp (2211) is connected to the storage battery (2213), and a light control switch is provided between the lamp (2211) and the storage battery (2213). The cover (2) also includes a transparent cover plate (23) installed at the opening of the installation groove (221). The mounting groove (221) is provided with an overlap groove (222) along its edge. The edge of the cover plate (23) overlaps into the overlap groove (222). The cover body (2) also includes several support members (24) provided in the mounting groove (221). The support members (24) are used to support the cover plate (23). The drainage hole (21) passes through the cover plate (23), the support member (24) and the body (22) from top to bottom; The drain hole (21) is a circular hole. A fixing member (3) is provided inside the drain hole (21). The fixing member (3) includes an integrally formed middle part (31) and a pressing part (32). The middle part (31) is a hollow tubular structure adapted to the drain hole (21). The pressing part (32) is sleeved to the end of the middle part (31). The pressing part (32) is an annular shape adapted to the middle part (31). The middle part (31) is threaded to the cover plate (23) or the body (22). The pressing part (32) presses the cover plate (23). A cleaning component (4) is provided inside the middle part (31). The cleaning component (4) includes a first shield (41) and a second shield (42) adapted to the drain hole (21). The first shield (41) is located above the second shield (42). An elastic member (5) is provided between the first shield (41) and the middle part (31). The first shield (41) is provided with a plurality of water passage holes (411). The second shield (42) is provided with a plurality of water passage holes (411). A plurality of water passage holes 2 (421) are provided, and a plurality of water passage holes 1 (411) are staggered with a plurality of water passage holes 2 (421). A connecting hole (412) is provided on the shielding member 1 (41). A connecting rod (43) is slidably connected in the connecting hole (412). The bottom end of the connecting rod (43) is fixedly connected to the shielding member 2 (42). A limiting member is provided on the connecting rod (43). The limiting member is attached to the shielding member 1 (41). A filter screen cover (44) is detachably installed on the lower surface of the shielding member two (42), and a plurality of water passage holes two (421) are located inside the filter screen cover (44); The inner circumferential surface of the middle part (31) is vertically provided with a plurality of arrangement grooves (311), and a plurality of elastic members (5) are provided, with each elastic member (5) corresponding to one of the arrangement grooves (311). The elastic members (5) are disposed in the arrangement grooves (311), the bottom end of the elastic member (5) is fixedly connected to the middle part (31), and the top end of the elastic member (5) is fixedly connected to a snap-fit ​​member (45). The snap-fit ​​member (45) is provided with a slot (451) that cooperates with the first shielding member (41), and the first shielding member (41) is slidably connected to the slot (451). The snap-fit ​​component (45) includes a base part (452) and a sliding part (453). The sliding part (453) is located above the base part (452). The base part (452) is connected to the elastic member (5). A track groove (4531) is provided on the lower surface of the sliding part (453). A slider (4512) is integrally provided on the corresponding base part (452). The slider (4512) is slidably connected to the track groove (4531). A spring member (6) is fixed between the slider (4512) and the sliding part (453), and when the sliding part (453) is separated from the fixing member (3), the sliding part (453) moves away from the connecting rod (43) under the action of the spring member (6); The connecting rod (43) includes a main body (433) and a rotating part (434). The main body (433) passes through the connecting hole (412) and is fixedly connected to the second shield (42). The rotating part (434) is rotatably connected to the top of the main body (433). A plurality of pull ropes (4341) are fixedly connected to the rotating part (434). The plurality of pull ropes (4341) correspond one-to-one with a plurality of sliding parts (453). A pin (4342) is fixedly connected to the pull rope (4341). A hole (4532) is opened on the upper surface of the sliding part (453). The pin (4342) is slidably connected to the hole (4532).

2. The multifunctional composite manhole cover according to claim 1, characterized in that, The upper surface of the second shielding member (42) is fixed with a number of plugs (422) that are adapted to the first water passage hole (411). The number of plugs (422) corresponds to the number of first water passage holes (411), and when the plugs (422) are inserted into the first water passage hole (411), the upper surface of the plugs (422) is flush with the upper surface of the shielding member.

Images