Intelligent well lid of well lid intelligent area management system based on Internet of Things

Abstract

An intelligent well lid of a well lid intelligent area management system based on the Internet of Things belongs to the technical field of well lid intelligent management, and comprises a well lid and a well seat which are mutually matched and connected. A locking mechanism is arranged at the bottom of the well lid, a fixing mechanism is arranged on the inner wall of the well base, and the locking mechanism and the fixing mechanism are connected in an openable mode. A strain gauge sensor, a humidity sensor, a detection electric cabinet and a power supply assembly are arranged on the bottom face of the well lid, the strain gauge sensor, the humidity sensor and the power supply assembly are all electrically connected with the detection electric cabinet, and the power supply assembly provides a working power supply for the detection electric cabinet, the strain gauge sensor and the humidity sensor. And the detection electric cabinet is used for receiving and processing detection signals transmitted by the strain gauge sensor and the humidity sensor. The structural strength and the anti-rolling and anti-impact capacity are greatly improved, the locking mechanism and the fixing mechanism achieve stable locking and convenient unlocking of the well lid and the well base, and meanwhile various monitoring components are integrated to achieve real-time monitoring of various hidden dangers.

Description

Technical Field

[0001] This invention belongs to the field of intelligent manhole cover management technology, specifically relating to a smart manhole cover based on an Internet of Things-based intelligent area management system. Background Technology

[0002] Manhole covers, as an important component of underground pipe networks, cable wells, drainage wells, and other infrastructure, are widely distributed in urban roads, industrial parks, and residential areas. The cable well covers in large industrial parks are particularly critical, as their safe operation directly affects public safety, the normal operation of infrastructure, and the stability of the park's power system. Cable wells in large industrial parks are mostly located outdoors, facing long-term challenges such as rainwater erosion and humidity. Once rainwater seeps into the cable well, it can easily lead to short circuits and cable aging, causing power outages and severe economic losses. Therefore, the waterproof performance of cable well covers is a core requirement.

[0003] Currently, traditional manhole covers generally suffer from the following problems: First, their structural strength is insufficient. Long-term exposure to vehicle pressure and heavy object impacts can easily lead to damage and deformation. Furthermore, the connection between the cover and the manhole base is not secure, making them prone to loss or displacement, potentially causing pedestrian falls or vehicle damage. Second, their waterproofing design is inadequate. Existing cable manhole covers mostly use a single sealing structure, resulting in poor sealing reliability and a tendency to leak. Furthermore, the lack of effective leak monitoring methods makes it difficult to detect potential seal damage in a timely manner. Often, the problem is only discovered after rainwater seeps into the cable manhole, causing power outages, leading to inefficient handling. Third, their management is inefficient. Traditional manhole cover management relies heavily on manual inspections, which not only consumes significant manpower, resources, and time but also has a limited inspection range and low accuracy, making it difficult to achieve real-time monitoring across the entire area, in all directions, and around the clock. In particular, it is impossible to promptly identify waterproofing hazards in outdoor cable manholes. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a smart manhole cover based on the Internet of Things intelligent area management system. The present invention significantly improves the structural strength and resistance to crushing and impact. The locking mechanism and fixing mechanism realize the stable locking of the manhole cover and the manhole seat and the easy unlocking. At the same time, it integrates a variety of monitoring components to realize the real-time monitoring of various hidden dangers.

[0005] The technical solution adopted by this invention to solve the problems existing in the prior art is: A smart manhole cover includes a manhole cover and a manhole base that are connected to each other.

[0006] The bottom of the manhole cover is provided with a locking mechanism, and the inner wall of the manhole base is provided with a fixing mechanism. The locking mechanism and the fixing mechanism are closable and can be used to lock and unlock the manhole cover and the manhole base.

[0007] The bottom surface of the manhole cover is equipped with several strain gauge sensors and a humidity sensor. The bottom surface of the manhole cover is also equipped with a detection control box and a power supply assembly. The strain gauge sensors, humidity sensors, and power supply assembly are all electrically connected to the detection control box. The power supply assembly provides working power to the detection control box, strain gauge sensors, and humidity sensors. The detection control box is used to receive and process the detection signals transmitted by the strain gauge sensors and humidity sensors.

[0008] Furthermore, the detection control box is equipped with a camera and a gas concentration sensor that are electrically connected to it. The camera is used to collect image information of the area under and around the manhole cover, and the gas concentration sensor is used to detect the gas concentration information under the manhole cover. The information collected by the camera and the gas concentration sensor is transmitted to the detection control box for processing.

[0009] Furthermore, the manhole cover includes a cover body and a keel that are interlocked and fixed together. The cover body is made of fiberglass or engineering plastic, and the keel is made of ductile iron.

[0010] A clamping plate is protruding from the center of the bottom surface of the cover, and an inner groove is formed on the bottom surface of the cover outside the clamping plate.

[0011] The keel includes a polygonal frame located at the center, and triangular reinforcing ribs are arranged radiating outward from the corners of the polygonal frame. Several reinforcing rings are fitted on the triangular reinforcing ribs.

[0012] The polygonal frame and triangular reinforcing ribs are inserted inside the clamping plate, and the reinforcing ring is engaged inside the inner groove to achieve a stable connection between the cover and the keel.

[0013] Furthermore, the locking mechanism includes a swivel dial, a pull rod, and a hook plate arranged coaxially with the cover.

[0014] The top of the plum blossom turntable is coaxially fixed with a rotating shaft, and the rotating shaft is fitted with an assembly retaining ring that is rotatably connected to it. The assembly retaining ring is detachably fixed to the bottom surface of the cover.

[0015] The circumferential surface of the plum blossom turntable is provided with a circumferential groove, and the bottom or top surface of the circumferential groove is provided with a snap-fit ​​groove.

[0016] One end of the pull rod is provided with a protruding insert rod, which is slidably disposed in the snap ring groove, and the other end of the pull rod is provided with an I-beam plate.

[0017] The hook plate includes a straight plate and an L-shaped plate. One end of the straight plate and the L-shaped plate are fixedly arranged at an angle. A waist-shaped hole is opened on the straight plate. The I-shaped plate is engaged with the waist-shaped hole and can slide along the waist-shaped hole.

[0018] The straight plate has rotating holes on both sides below the waist-shaped hole. A rotating rod is inserted into the rotating hole and rotated therewith. The end of the rotating rod is fixedly connected to the bottom surface of the cover.

[0019] A support plate is fixed on the polygonal frame, and a drive device for rotating the plum blossom turntable is provided on the support plate.

[0020] The fixing mechanism includes a fixing seat that is fixedly connected to the inner wall of the well base. The fixing seat includes a horizontal plate and a vertical plate. The vertical plate is fixedly connected to the end of the horizontal plate away from the center of the well base, and the vertical plate is fixedly connected to the inner wall of the well base. A locking hole is provided on the horizontal plate.

[0021] When the plum blossom turntable rotates, the straight plate of the hook plate is pulled to a vertical position by the pull rod. At this time, the L-shaped plate of the hook plate moves down and passes through the locking hole.

[0022] When the plum blossom turntable rotates in the opposite direction and pushes the pull rod outward, the straight plate of the hook plate returns to its tilted arrangement. At this time, the L-shaped plate engages with the locking hole to lock the manhole cover and the manhole seat.

[0023] Furthermore, a toothed disc is coaxially fixed to the bottom of the plum blossom turntable, and an annular toothed ring is provided on the bottom surface of the toothed disc. Several limiting holes are provided in the middle of the toothed disc in a ring array around its axis.

[0024] The driving device is a telescopic control mechanism. The telescopic part of the telescopic control mechanism is fixedly connected to a U-shaped plate. A rack is provided on one side plate of the U-shaped plate. When the rack moves to the bottom of the gear disk, the rack engages with the annular gear ring of the gear disk.

[0025] A locator is provided between the plum blossom turntable and the support plate. The locator is disc-shaped and has several positioning rods. The upper end of the positioning rod extends above the locator and corresponds to the limiting hole. The lower end of the positioning rod extends below the locator and passes through the through hole opened on the support plate. The end of the positioning rod located below the support plate is fixed with a limiting plate. A first spring is sleeved on the positioning rod and is located between the support plate and the locator.

[0026] Two trapezoidal blocks are protruding from the top surface of the locator. The inclined surfaces of the trapezoidal blocks face the U-shaped plate, and the height of the trapezoidal blocks is greater than or equal to the depth to which the locating rod is inserted into the locating hole in the locating state.

[0027] In the limited position state, the positioning rod is inserted into the corresponding limiting hole, the top surface of the trapezoidal block abuts against the bottom surface of the plum blossom turntable, and the U-shaped plate is placed on the locator.

[0028] When the pull rod needs to be adjusted, the U-shaped plate moves toward the trapezoidal block, and after contact, it presses the trapezoidal block downward, thereby driving the positioning rod to move downward from the limiting hole. When the bottom surface of the U-shaped plate abuts against the top surface of the trapezoidal block, the positioning rod is completely moved out of the limiting hole. At this time, the rack part is fully engaged with the gear plate, and the U-shaped plate continues to move, driving the plum blossom turntable to rotate.

[0029] Furthermore, a top block is slidably disposed on the fixed base.

[0030] The top block includes a horizontally arranged platform, a T-shaped slider is provided at the bottom of the platform, and a groove is provided on the horizontal plate, in which the T-shaped slider is slidably disposed.

[0031] The top of the platform is fixed with triangular blocks and baffles at intervals. The inclined surfaces of the triangular blocks face the baffles and the inclined surfaces of the triangular blocks face away from the hook plate.

[0032] A pressure block is provided between the triangular block and the baffle. A vertically arranged top support rod is fixed above the pressure block. A top plate is fixedly connected at intervals above the horizontal plate. A through hole is opened on the top plate. The upper end of the top support rod passes through the through hole. A second spring is sleeved on the top support rod. The second spring is located below the top plate.

[0033] A third spring is provided between the top block and the vertical plate of the fixed base. Under the elastic thrust of the third spring, the end face of the top block abuts against the straight plate of the hook plate.

[0034] Furthermore, the cover has several side grooves on its circumferential surface, and a side block is engaged inside the side groove. The side block is integrally formed with the triangular reinforcing rib or reinforcing ring of the keel, and an insertion hole is provided on the outer surface of the side block.

[0035] As the straight plate of the hook plate rotates to a vertical position, the straight plate pushes the top block outward to slide along the slide groove. The top block drives the triangular block to move synchronously. The inclined surface of the triangular block presses the pressure block upward, thereby driving the top support rod to move upward and pushing the manhole cover upward. When the straight plate is in a vertical state, the outer ring of the insertion hole is exposed to the outside of the manhole seat.

[0036] Furthermore, the well base includes a cylindrical insertion part, the outer side of which is provided with a covering extension, and the inner side of which is provided with a mounting platform, and the well cover is placed on the mounting platform.

[0037] The mounting platform has two sealing grooves, and a detection groove is formed between the two sealing grooves. A sealing ring is set inside the sealing groove, and the humidity sensor is set inside the detection groove.

[0038] The well base is equipped with a wireless charging component, which includes a wireless charging plate. One end of the wireless charging plate is provided with a rotating rod. The end of the rotating rod is coaxially fixedly connected to a gear. A rotating sleeve is fitted on the rotating rod. The rotating sleeve is fixedly connected to the inner wall of the insertion part. A sliding sleeve is fixedly connected to the inner wall of the insertion part. A rack rod that can slide up and down is fitted inside the sliding sleeve. The rack rod is meshed with the gear.

[0039] When the manhole cover is placed on the mounting platform, the manhole cover presses down the rack and pinion rod, which slides down the sliding sleeve. The rack and pinion rod drives the gear to rotate, which in turn drives the wireless charging plate to rotate to a horizontal position. The horizontal wireless charging plate is located below the power assembly and is used to wirelessly charge the power assembly.

[0040] After the manhole cover is removed from the mounting platform, the wireless charging plate rotates to a vertical position under its own gravity, which in turn drives the gear to rotate in the opposite direction, thereby driving the rack rod to move upward along the sliding sleeve, so that the upper end of the rack rod extends outside the manhole seat.

[0041] Compared with the prior art, the present invention has the following beneficial effects: (1) The cover and the keel are fastened together. The cover is made of composite fiber and the keel is made of ductile iron. With the addition of triangular reinforcing ribs and reinforcing rings, the structural strength and resistance to crushing and impact of the manhole cover are greatly improved. At the same time, the design of the locking mechanism and the fixing mechanism can achieve a stable locking between the manhole cover and the manhole seat, effectively preventing the manhole cover from being lost or moved. The unlocking is convenient and easy for maintenance personnel to operate.

[0042] (2) The smart manhole cover integrates a variety of monitoring components such as strain gauge sensors, humidity sensors, cameras, and gas concentration sensors. It can collect data such as the structural status of the manhole cover, the humidity of the surrounding environment, the gas concentration in the well, and environmental images in real time, so as to realize the real-time monitoring of potential hazards such as manhole cover damage, displacement, water accumulation, and gas leakage, and solve the problem of delayed detection of potential hazards in traditional manhole covers.

[0043] (3) The smart manhole cover is equipped with a wireless charging component, which enables wireless charging of the power assembly, eliminating the need to frequently disassemble the manhole cover to replace the battery and reducing maintenance costs. Attached Figure Description

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0045] Figure 1 This is a structural diagram of the smart manhole cover of the present invention. Figure 2 This is a bottom view of the smart manhole cover of the present invention. Figure 3 This is a cross-sectional view of the smart manhole cover of the present invention. Figure 4 for Figure 3Enlarged view of a portion of point A in the middle. Figure 5 This is a structural diagram of the smart manhole cover of the present invention. Figure 6 This is a view of the bottom of the manhole cover. Figure 7 This is an exploded view of the manhole cover. Figure 8 This is a structural diagram of the locking mechanism in the smart manhole cover of the present invention. Figure 9 This is a structural diagram of the assembly retaining ring in the smart manhole cover of this invention. Figure 10 This is a magnified view of a portion of the middle area of ​​the locking mechanism. Figure 11 for Figure 10 sectional view, Figure 12 This is a sectional view of the pentagonal turntable in the locking mechanism. Figure 13 This is a structural diagram of the gear plate connection in the locking mechanism. Figure 14 This is a structural diagram of the positioner connection in the locking mechanism. Figure 15 This is a structural diagram of the positioner in the locking mechanism. Figure 16 This is a structural diagram of the pull rod assembly in the locking mechanism. Figure 17 This is a structural diagram of the connection between the locking mechanism and the fixing mechanism. Figure 18 for Figure 17 Sectional view, Figure 19 This is a structural diagram of the fixed seat in the fixed mechanism. Figure 20 This is a structural diagram of the top block in the fixed mechanism. Figure 21 This is a structural diagram of the manhole cover frame in the smart manhole cover of this invention. Figure 22 This is a structural diagram of the wireless charging component in the smart manhole cover of the present invention.

[0046] In the diagram: 1-Cover body, 101-Inner groove, 102-Clamping plate, 103-Side groove, 2-Keel, 201-Polygonal frame, 202-Triangular reinforcing rib, 203-Reinforcing ring, 204-Side block, 205-Insertion hole, 3-Strain gauge sensor, 4-Humidity sensor, 5-Assembly retaining ring, 6-Plum blossom turntable, 601-Rotating shaft, 602-Gear disc, 603-Circumferential ring groove, 604-Snap-fit ​​ring groove, 605-Limiting hole, 7-Pull rod, 701-Insertion rod, 702-I-beam plate, 8-Hook plate, 801-Straight plate, 802-L-shaped plate, 803-Rotating hole, 804-Oval hole, 9-Telescopic control mechanism, 10-U-shaped plate, 1001-Rack section, 11-Positioner, 1101-Positioning rod, 1102-Limiting disc. 1103-Trapezoidal block, 12-First spring, 13-Support plate, 14-Fixed seat, 1401-Horizontal plate, 1402-Vertical plate, 1403-Top plate, 1404-Slide groove, 1405-Locking hole, 15-Top block, 1501-Step plate, 1502-T-shaped slider, 1503-Triangular block, 1504-Baffle, 16-Top support rod, 1601-Pressure block, 17-Second spring, 18-Third spring, 19-Detection control box, 20-Power assembly, 21-Well base, 2101-Insert part, 2102-Covering extension, 2103-Mounting platform, 2104-Sealing groove, 2105-Detection groove, 22-Sealing ring, 23-Wireless charging plate, 2301-Gear, 24-Rotating sleeve, 25-Rack and pinion, 26-Slide sleeve. Detailed Implementation

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of this application belong. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application.

[0048] Furthermore, the specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for illustrative purposes and are determined based on the exemplary orientations shown in the accompanying drawings. Therefore, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0049] The following description, in conjunction with the accompanying drawings, provides a further detailed explanation of the smart manhole cover of the present invention, which is based on an Internet of Things-based intelligent area management system.

[0050] Depend on Figures 1 to 22As shown, a smart manhole cover includes a manhole cover and a manhole base 21 that are connected to each other.

[0051] The manhole cover includes a cover body 1 and a keel 2 that are interlocked and fixed together. The cover body 1 is made of fiberglass or engineering plastic, and the keel 2 is made of ductile iron.

[0052] A clamping plate 102 is protruding from the center of the bottom surface of the cover 1, and an inner groove 101 is formed on the bottom surface of the cover 1 outside the clamping plate 102.

[0053] The keel 2 includes a polygonal frame 201 located at the center, and triangular reinforcing ribs 202 are arranged radiating outward from the corners of the polygonal frame 201. Several reinforcing rings 203 are fitted on the triangular reinforcing ribs 202.

[0054] The polygonal frame 201 and the triangular reinforcing rib 202 are inserted into the clamping plate 102, and the reinforcing ring 203 is engaged in the inner groove 101 to achieve a stable connection between the cover 1 and the keel 2.

[0055] The cover 1 has several side grooves 103 on its circumferential surface. The number of side grooves 103 is an even number, such as 2, 4, or 6. A side block 204 is engaged inside each side groove 103. The side block 204 is integrally formed with the triangular reinforcing rib 202 or reinforcing ring 203 of the keel 2. An insertion hole 205 is provided on the outer surface of the side block 204.

[0056] The cover body 1, made of fiberglass or engineering plastic, significantly reduces the overall weight of the manhole cover, making it easy to lift manually during maintenance. It also boasts advantages such as corrosion resistance, aging resistance, and good insulation, avoiding the potential hazards of rust and conductivity associated with metal materials. The frame 2, made of ductile iron, has high hardness and strong load-bearing capacity, effectively resisting the pressure of vehicles and pedestrians, preventing deformation and damage to the manhole cover. This layered structural design of the cover body and frame achieves the dual advantages of lightweight and high strength, reducing production, transportation, and installation costs, extending the service life of the manhole cover, and reducing the frequency of subsequent maintenance.

[0057] When the cover 1 is formed, the clamping plate 102, the inner groove 101, and the side groove 103 are simultaneously formed as a single piece. This ensures that the size of the clamping plate 102 matches the polygonal frame 201 and the triangular reinforcing rib 202 of the keel 2, the size of the inner groove 101 matches the outer diameter of the reinforcing ring 203, and the position and number of the side grooves 103 correspond one-to-one with the side blocks 204. After the side blocks 204 are integrally cast with the keel, during assembly, the side blocks 204 are aligned with the side grooves 103 and inserted to achieve circumferential positioning of the cover and the keel, preventing relative rotation. After the manhole cover is unlocked, maintenance personnel insert a special hook or rod into the insertion hole 205 and pull upwards using the lever principle to lift the manhole cover from the manhole base 21, completing the maintenance work.

[0058] The bottom of the manhole cover is provided with a locking mechanism, and the inner wall of the manhole base 21 is provided with a fixing mechanism. The locking mechanism and the fixing mechanism can be opened and closed to realize the locking and unlocking of the manhole cover and the manhole base 21.

[0059] The locking mechanism includes a plum blossom turntable 6, a pull rod 7, and a hook plate 8 arranged coaxially with the cover 1.

[0060] The top of the plum blossom turntable 6 is coaxially fixed with a rotating shaft 601. A rotatable retaining ring 5 is fitted around the rotating shaft 601 and is rotatably connected to it. The rotatable retaining ring 5 is detachably fixed to the bottom surface of the cover 1 by bolts, facilitating future maintenance and replacement. The rotatable retaining ring 5 is made of two semi-circular bearing seats, which are detachably connected by bolts, facilitating installation and removal from the rotating shaft 601.

[0061] The circumferential surface of the plum blossom turntable 6 is provided with a circumferential groove 603, and the bottom or top surface of the circumferential groove 603 is provided with a snap-fit ​​groove 604.

[0062] One end of the pull rod 7 is provided with a protruding insertion rod 701, which is slidably disposed in the snap ring groove 604, and the other end of the pull rod 7 is provided with an I-beam plate 702.

[0063] The hook plate 8 includes a straight plate 801 and an L-shaped plate 802. One end of the straight plate 801 and the L-shaped plate 802 are fixedly arranged at an angle. A slotted hole 804 is provided on the straight plate 801. The I-beam plate 702 engages with the slotted hole 804 and can slide along the slotted hole 804. This connection method between the I-beam plate 702 and the slotted hole 804 can adapt to changes in angle during the rotation of the hook plate 8, ensuring smooth power transmission and preventing component damage.

[0064] The straight plate 801 has rotating holes 803 on both sides below the waist-shaped hole 804. A rotating rod is inserted into the rotating hole 803 and rotated therewith. The end of the rotating rod is fixedly connected to the bottom surface of the cover 1, so that the hook plate 8 can rotate around the rotating rod.

[0065] During operation, the rotation of the plum blossom turntable 6 drives the locking ring groove 604 to rotate synchronously, which in turn pulls or pushes the pull rod 7 through the insertion rod 701. The pull rod 7 slides through the I-beam plate 702 in the waist-shaped hole 804, driving the hook plate 8 to rotate around the turntable, realizing the opening and closing cooperation between the hook plate 8 and the fixing mechanism, and completing the locking and unlocking of the manhole cover.

[0066] A support plate 13 is fixed on the polygonal frame 201. The support plate 13 is equipped with a drive device for rotating the plum blossom turntable 6. In this embodiment, the drive device is a telescopic control mechanism 9, specifically an electric telescopic rod.

[0067] The fixing mechanism includes a fixing base 14 fixedly connected to the inner wall of the well base 21. The fixing base 14 includes a horizontal plate 1401 and a vertical plate 1402. The vertical plate 1402 is fixedly connected to one end of the horizontal plate 1401 away from the center of the well base 21, and the vertical plate 1402 is fixedly connected to the inner wall of the well base 21 by bolts. The horizontal plate 1401 has a locking hole 1405. The size of the locking hole 1405 on the horizontal plate 1401 matches the L-shaped plate 802 of the hook plate 8, ensuring that the L-shaped plate 802 can pass through or be engaged smoothly.

[0068] When the manhole cover is locked, the remote control center controls the telescopic control mechanism 9 to drive the plum blossom turntable 6 to rotate. The plum blossom turntable 6 pushes the pull rod 7 to move outward through the snap ring groove 604. The pull rod 7 drives the straight plate 801 of the hook plate 8 to rotate around the turntable through the I-beam plate 702, restoring the inclined arrangement. At this time, the L-shaped plate 802 is inserted into the locking hole 1405. By utilizing the inclined angle of the hook plate and the L-shaped structure, the manhole cover and the manhole base 21 are locked.

[0069] When the manhole cover is unlocked, the plum blossom turntable 6 rotates in the opposite direction, pulling the lever 7 to move inward, causing the straight plate 801 of the hook plate 8 to rotate to a vertical state, and the L-shaped plate 802 moves down through the locking hole 1405 to release the locking state, making it easier to open the manhole cover.

[0070] The precise fit between the locking hole 1405 and the L-shaped plate 802 ensures a secure lock when tightened, preventing loosening and effectively preventing the manhole cover from being stolen or displaced by vehicles. Unlocking is smooth and seamless, without affecting maintenance efficiency. Furthermore, this locking method eliminates the need for external lock holes on the manhole cover, making it impossible to pry open without unlocking, further enhancing its anti-theft performance.

[0071] The bottom of the plum blossom turntable 6 is coaxially fixed with a toothed disc 602. The bottom surface of the toothed disc 602 is provided with an annular toothed ring. The middle of the toothed disc 602 is provided with a number of limiting holes 605 arranged in a ring array around its axis.

[0072] The telescopic control mechanism 9 has a telescopic part fixedly connected to a U-shaped plate 10. A rack part 1001 is provided on one side plate of the U-shaped plate 10. When the rack part 1001 moves to below the gear plate 602, the rack part 1001 meshes with the annular gear ring of the gear plate 602.

[0073] A locator 11 is provided between the plum blossom turntable 6 and the support plate 13. The locator 11 is disc-shaped and has a plurality of positioning rods 1101. The upper end of the positioning rod 1101 extends above the locator 11 and corresponds one-to-one with the limiting hole 605. The lower end of the positioning rod 1101 extends below the locator 11 and passes through the through hole opened on the support plate 13. The end of the positioning rod 1101 located below the support plate 13 is fixed with a limiting plate 1102. A first spring 12 is sleeved on the positioning rod 1101 and is located between the support plate 13 and the locator 11.

[0074] Two trapezoidal blocks 1103 are protruding from the top surface of the locator 11. The inclined surfaces of the trapezoidal blocks 1103 face the U-shaped plate 10, and the height of the trapezoidal blocks 1103 is greater than or equal to the depth of the positioning rod 1101 inserted into the limiting hole 605 in the limiting state.

[0075] The support plate 13 is fixed to the polygonal frame 201 with bolts to ensure that the support plate 13 is firmly installed and level. The telescopic control mechanism 9 is fixed to the support plate 13, and its telescopic part is fixedly connected to the U-shaped plate 10 to ensure that the telescopic movement can drive the U-shaped plate 10 to move smoothly. The gear plate 602 is coaxially fixed to the plum blossom turntable 6 to ensure that the two rotate synchronously. The limiting holes 605 are evenly distributed in the middle of the gear plate 602, corresponding one-to-one with the positioning rods 1101 of the positioner 11. The positioner 11 uses the positioning rods 1101 to pass through the through holes of the support plate 13, and cooperates with the first spring 12 to achieve elastic support. The limiting plate 1102 is used to limit the upward stroke of the positioning rods 1101 to prevent the positioning rods 1101 from falling off the support plate 13. The trapezoidal blocks 1103 are symmetrically arranged on the top surface of the positioner 11, with the inclined surface facing the U-shaped plate 10, to ensure that the U-shaped plate 10 can smoothly squeeze the trapezoidal blocks 1103 when it moves.

[0076] In the limited position, the first spring 12 is in a naturally extended state, pushing the locator 11 to move upward, so that the positioning rod 1101 is inserted into the limiting hole 605 of the toothed disc 602, the top surface of the trapezoidal block 1103 abuts against the bottom surface of the plum blossom turntable 6, and the U-shaped plate 10 is placed on the locator 11. At this time, the rack part 1001 is separated from the toothed disc 602, and the plum blossom turntable 6 cannot rotate, ensuring that the manhole cover is locked stably.

[0077] When the manhole cover needs to be opened, after the maintenance personnel arrive, the remote control center sends a control signal to activate the telescopic control mechanism 9. This causes the U-shaped plate 10 to move towards the trapezoidal block 1103. After the U-shaped plate 10 contacts the inclined surface of the trapezoidal block 1103, it presses the trapezoidal block 1103 downwards. The positioner 11 moves downwards, the first spring 12 is compressed, and the positioning rod 1101 moves downwards from the limiting hole 605. When the bottom surface of the U-shaped plate 10 is fully in contact with the top surface of the trapezoidal block 1103, the positioning rod 1101 completely disengages from the limiting hole 605. At this time, the rack portion 1001 on the U-shaped plate 10 is fully engaged with the annular gear ring of the gear disc 602. The telescopic control mechanism 9 continues to move the U-shaped plate 10, and the rack portion 1001 drives the gear disc 602 to rotate, which in turn drives the pendulum turntable 6 to rotate synchronously, thereby pulling the pull rod 7 and unlocking the manhole cover.

[0078] When locking is required, the telescopic control mechanism 9 drives the U-shaped plate 10 to move in the opposite direction, which in turn drives the toothed disc 602 to rotate in the opposite direction. At the same time, the U-shaped plate 10 disengages from the trapezoidal block 1103, the first spring 12 returns to its natural extended state, pushes the positioner 11 to move upward, and the positioning rod 1101 is reinserted into the limiting hole 605 to restore the limiting state, ensuring that the plum blossom turntable 6 is fixed and the manhole cover is stable.

[0079] The automatic limiting of the plum blossom turntable 6 is achieved through the cooperation of the positioner 11 and the first spring 12. In the limited state, the accidental rotation of the turntable 6 is effectively prevented, ensuring the manhole cover is securely locked and preventing loosening due to vibration or collision. The trapezoidal block 1103 design enables the automatic disengagement and reset of the positioning rod 1101, eliminating the need for additional control mechanisms, simplifying the operation process, and reducing equipment failure rate. This unlocking method ensures the safety and standardization of unlocking operations, preventing unauthorized personnel from opening the manhole cover, while also improving the efficiency of maintenance work.

[0080] A top block 15 is slidably mounted on the fixed base 14. The top block 15 includes a horizontally arranged mounting plate 1501. A T-shaped slider 1502 is provided at the bottom of the mounting plate 1501. A groove 1404 is provided on the horizontal plate 1401, and the T-shaped slider 1502 is slidably disposed in the groove 1404. Triangular blocks 1503 and baffles 1504 are fixedly fixed at intervals on the top of the mounting plate 1501. The inclined surface of the triangular blocks 1503 faces the baffle 1504, and the inclined surface of the triangular blocks 1503 faces away from the hook plate 8. A pressure block 1601 is provided between the triangular block 1503 and the baffle 1504. A vertically arranged top support rod 16 is fixed above the pressure block 1601. A top plate 1403 is fixedly connected above the horizontal plate 1401 at intervals. A through hole is provided on the top plate 1403, and the upper end of the top support rod 16 passes through the through hole. A second spring 17 is sleeved on the top support rod 16, and the second spring 17 is located below the top plate 1403. A third spring 18 is provided between the top block 15 and the vertical plate 1402 of the fixed base 14. Under the elastic thrust of the third spring 18, the end face of the top block 15 abuts against the straight plate 801 of the hook plate 8. As the straight plate 801 of the hook plate 8 rotates to the vertical position, the straight plate 801 pushes the top block 15 outward to slide along the slide groove 1404. The top block 15 drives the triangular block 1503 to move synchronously. The inclined surface of the triangular block 1503 presses the pressure block 1601 upward, thereby driving the top support rod 16 to move upward and pushing the well cover upward. When the straight plate 801 is in a vertical state, the outer ring of the insertion hole 205 is exposed to the outside of the well seat 21.

[0081] The top block 15 is slidably connected to the groove 1404 of the horizontal plate 1401 of the fixed base 14 via the T-shaped slider 1502 at its bottom, ensuring that the top block 15 can move smoothly along the groove 1404 without deviation. The triangular block 1503 and the baffle 1504 are fixed to the top of the mounting plate 1501, and the pressure block 1601 is placed between the triangular block 1503 and the baffle 1504, ensuring that the pressure block 1601 can slide along the inclined surface of the triangular block 1503. The top support rod 16 is fixedly connected to the pressure block 1601, and its upper end passes through the through hole of the top plate 1403. The second spring 17 is sleeved on the top support rod 16 and located below the top plate 1403, realizing the elastic return of the top support rod 16. The third spring 18 is set between the top block 15 and the vertical plate 1402. In its natural state, it is in an extended state and pushes the top block 15 to move towards the hook plate 8, so that the end face of the top block 15 abuts against the straight plate 801 of the hook plate 8.

[0082] When the manhole cover is unlocked, the straight plate 801 of the hook plate 8 rotates to a vertical position, pushing the top block 15 outward. The top block 15 overcomes the elastic force of the third spring 18 and slides along the slide groove 1404 towards the vertical plate 1402. The top block 15 drives the triangular block 1503 to move synchronously. The inclined surface of the triangular block 1503 presses the pressure block 1601 upward, causing the pressure block 1601 to move upward, driving the top support rod 16 to move upward synchronously. The second spring 17 is compressed, and the upper end of the top support rod 16 pushes the manhole cover upward. When the straight plate 801 rotates to a vertical position, the manhole cover is lifted to a certain height by the top support rod 16, and the outer ring of the insertion hole 205 is exposed to the outside of the manhole base 21, making it convenient for maintenance personnel to insert special tools to lift the manhole cover. When the manhole cover is locked, the straight plate 801 of the hook plate 8 returns to its tilted arrangement, the thrust on the top block 15 disappears, the third spring 18 returns to its natural extended state, pushes the top block 15 to move in the opposite direction, the triangular block 1503 separates from the pressure block 1601, the second spring 17 returns to its natural state, drives the top support rod 16 to move downward and reset to its initial position, the top support rod 16 separates from the manhole cover, ensuring that the manhole cover is stably placed on the mounting platform 2103 of the manhole seat 21.

[0083] The inclined surfaces of the triangular block 1503 and the pressure block 1601 engage to convert the horizontal movement of the top block 15 into the vertical movement of the top support rod 16. This efficient power transmission eliminates the need for an additional drive device; the top support action is achieved simply by rotating the hook plate 8, simplifying the structure and reducing costs. The cooperation between the second spring 17 and the third spring 18 enables the automatic reset of the top support rod 16 and the top block 15, ensuring that the top support rod 16 does not affect the stable placement of the manhole cover when it is locked, and automatically lifts the manhole cover when it is unlocked. After the top support rod 16 pushes the manhole cover upward, the insertion hole 205 is exposed, making it easier for maintenance personnel to insert special tools to lift the manhole cover, reducing labor intensity, and preventing the manhole cover from being difficult to open due to excessive tightness between the manhole cover and the manhole seat 21. The baffle 1504 limits the movement range of the pressure block 1601, preventing it from falling off the side of the triangular block 1503 and ensuring the stability of the top support mechanism.

[0084] The manhole base 21 includes a cylindrical insertion part 2101. A covering extension 2102 protrudes from the outer side of the insertion part 2101, and a mounting platform 2103 protrudes from the inner side of the insertion part 2101. The manhole cover rests on the mounting platform 2103. Two sealing grooves 2104 are formed on the mounting platform 2103, and a detection groove 2105 is formed between the two sealing grooves 2104. A sealing ring 22 is provided inside the sealing groove 2104, and a humidity sensor 4 is disposed inside the detection groove 2105. This sensor is used to detect the humidity between the manhole cover and the manhole base to determine if there is a potential leakage risk.

[0085] The manhole base 21 is inserted into the pre-drilled underground installation hole via the insertion part 2101, covering the outer extension 2102 to fit against the ground. This serves to block the installation gap, preventing debris and rainwater from entering the installation hole, while also improving the installation stability of the manhole base 21. The mounting platform 2103 is used to place the manhole cover, ensuring that the manhole cover is level and stable after installation. The two sealing grooves 2104 on the mounting platform 2103 are used to place the sealing ring 22. The sealing ring 22 is made of waterproof and aging-resistant material. During installation, it is ensured that the sealing ring 22 fits tightly with the sealing groove 2104 without any gaps. The detection groove 2105 is formed between the two sealing grooves 2104. The humidity sensor 4 is fixed inside the detection groove 2105 and electrically connected to the detection control box 19. It collects the humidity data inside the detection groove 2105 in real time and transmits the data to the detection control box 19. When the manhole cover is placed on the mounting platform 2103, the manhole cover fits tightly with the sealing ring 22, forming a double sealing structure that prevents rainwater and groundwater from entering the interior of the manhole base 21. If the sealing ring 22 is aged, damaged, or the manhole cover is not tightly fitted, rainwater will seep into the detection groove 2105 between the two sealing grooves 2104. After the humidity sensor 4 detects the abnormal humidity, it will transmit the signal to the detection control box 19, which will then issue an early warning signal to remind staff to deal with the potential leakage in time.

[0086] Two sealing rings 22 form a double sealing structure with excellent sealing performance, effectively preventing rainwater and groundwater from entering the manhole base 21 and protecting the electrical components inside the manhole base, such as the detection control box 19 and power assembly 20, from short circuits and damage. The detection groove 2105, in conjunction with the humidity sensor 4, can detect the sealing status between the manhole cover and the manhole base in real time, promptly identifying potential leaks. This facilitates timely maintenance by staff, preventing damage to underground equipment and road collapses caused by leaks, thus improving the safety and reliability of the manhole cover.

[0087] The manhole cover 21 is internally equipped with a wireless charging assembly, which includes a wireless charging plate 23. One end of the wireless charging plate 23 has a rotating rod, and the end of the rotating rod is coaxially fixedly connected to a gear 2301. A rotating sleeve 24 is fitted onto the rotating rod, and the rotating sleeve 24 is fixedly connected to the inner wall of the insertion part 2101. A sliding sleeve 26 is fixedly connected to the inner wall of the insertion part 2101, and a rack rod 25 that can slide up and down is fitted inside the sliding sleeve 26. The rack rod 25 meshes with the gear 2301. When the manhole cover is placed on the mounting platform 2103, the manhole cover presses down on the rack rod 25, which slides downwards along the sliding sleeve 26. The rack rod 25 drives the gear 2301 to rotate, thereby rotating the wireless charging plate 23 to a horizontal position. The horizontally positioned wireless charging plate 23 is located below the power assembly 20, used for wireless charging of the power assembly 20. After the manhole cover is removed from the mounting platform 2103, the wireless charging plate 23 rotates to a vertical position under its own gravity, simultaneously driving the gear 2301 to rotate in the opposite direction. This, in turn, causes the rack 25 to move upward along the sliding sleeve 26, so that the upper end of the rack 25 extends outside the manhole base 21. Reflective material is wrapped or coated on the rack 25. When the manhole cover is removed and the rack 25 moves upward, it can effectively alert pedestrians and vehicles.

[0088] When the manhole cover is placed on the mounting platform 2103, its own weight presses down on the rack 25, causing it to slide downwards along the sliding sleeve 26. The rack 25 drives the meshing gear 2301 to rotate, which in turn drives the rotating rod to rotate synchronously, thereby rotating the wireless charging pad 23 from a vertical position to a horizontal position. At this time, the wireless charging pad 23 is located below the power assembly 20, activating the wireless charging function to charge the power assembly 20 and ensure it has sufficient power. When the manhole cover is lifted and removed from the mounting platform 2103, the rack 25 loses the pressure of the cover, and the wireless charging pad 23 rotates in the opposite direction under its own gravity, carrying... The wireless charging component can charge the power assembly 20 without a wired connection, avoiding the risks of short circuits and leakage caused by aging or damaged wired charging lines. It also simplifies the structure, making installation and maintenance easier. The weight of the manhole cover and the wireless charging plate 23 work together to achieve automatic rotation of the wireless charging plate 23 and automatic lifting of the rack and pinion 25, eliminating the need for additional drive devices, saving energy and reducing equipment failure rates. When the wireless charging plate 23 is horizontal, it is precisely aligned with the power assembly 20, resulting in high charging efficiency and ensuring sufficient power for the power assembly 20. This provides a stable power supply for the detection control box 19 and various sensors, preventing detection function failure due to insufficient power.

[0089] The bottom surface of the manhole cover is equipped with several strain gauge sensors 3 and humidity sensors 4. A detection control box 19 and a power supply assembly 20 are also located on the bottom surface of the manhole cover. The strain gauge sensors 3, humidity sensors 4, power supply assembly 20, and wireless charging board 23 are all electrically connected to the detection control box 19. The power supply assembly 20 provides operating power to the detection control box 19, strain gauge sensors 3, and humidity sensors 4. The detection control box 19 receives and processes the detection signals transmitted by the strain gauge sensors 3 and humidity sensors 4. A camera and a gas concentration sensor are electrically connected to the detection control box 19. The camera is used to collect image information of the area below and around the manhole cover, and the gas concentration sensor is used to detect the gas concentration information below the manhole cover. The information collected by the camera and the gas concentration sensor is transmitted to the detection control box 19 for processing.

[0090] Strain gauge sensors 3 are evenly attached to the bottom surface of the manhole cover to detect the pressure and strain on the manhole cover and collect stress data in real time. Humidity sensor 4 consists of two parts: one part is installed in the detection groove 2105 of the manhole seat 21 to detect the sealing humidity between the manhole cover and the seat; the other part can be installed on the bottom surface of the manhole cover to detect the humidity of the underground environment. A camera is fixed to the detection control box 19, facing the bottom and surrounding area of ​​the manhole cover, to collect image information in real time. A gas concentration sensor is fixed to the detection control box 19, extending into the well, to collect real-time gas concentrations, such as methane and carbon monoxide. The detection control box 19 contains a controller and a wireless transmission module to receive and process signals collected by various sensors, and transmit the processed information to a remote control center via the wireless transmission module. The power supply assembly 20 stores the electrical energy transmitted by the wireless charging board 23, providing a stable power supply for the detection control box 19, strain gauge sensors 3, humidity sensor 4, camera, and gas concentration sensor. Various sensors, wireless charging pad 23, and power supply assembly 20 are all electrically connected to the detection control box 19 to ensure smooth signal transmission and power supply.

[0091] During operation, strain gauge sensor 3 monitors the stress on the manhole cover in real time. When the manhole cover is subjected to abnormal pressure, such as being run over by a heavy vehicle or subjected to malicious impact, strain gauge sensor 3 transmits the abnormal signal to the detection control box 19. The detection control box 19 processes the signal and sends an early warning signal to the remote control center, reminding staff to check if the manhole cover is damaged. Humidity sensor 4 collects the sealing humidity and underground humidity in real time. If abnormal sealing humidity or excessive underground humidity is detected, a signal is promptly sent to the detection control box 19 to trigger an early warning. Camera collects images of the underground and surrounding environment in real time. If debris accumulation, equipment damage, or unauthorized operation by personnel is detected underground, the image information is transmitted to the detection control box 19, processed, and sent to the remote control center for real-time monitoring by staff. Gas concentration sensor detects the concentration of harmful gases in the underground in real time. If the concentration exceeds the standard, the detection control box 19 immediately sends an early warning signal, reminding staff to take measures such as ventilation and investigation to prevent safety accidents. The detection control box 19 collects and processes all detection information and uploads it to the remote control center in real time, so that staff can have a comprehensive understanding of the operating status of the manhole cover and the underground environment and deal with various potential hazards in a timely manner.

[0092] The above-mentioned multi-sensor system works in concert to achieve comprehensive monitoring of the manhole cover and the underground environment, covering multiple dimensions such as manhole cover stress, sealing status, underground humidity, harmful gases, and environmental images, thus comprehensively improving the intelligent management level of manhole covers. Strain gauge sensor 3 can promptly detect abnormal stress on the manhole cover, providing early warnings of potential damage and preventing accidents such as road collapses and falls. Humidity sensor 4 can promptly detect potential water leakage, preventing damage to underground equipment and extending its service life. Gas concentration sensor can monitor the concentration of harmful gases underground in real time, providing early warnings of gas leak risks and ensuring the safety of maintenance personnel. Cameras enable real-time monitoring of the underground and surrounding environment, allowing staff to remotely monitor the situation, reducing the frequency of on-site inspections and lowering inspection costs. The detection control box 19, as the core control unit, centrally processes and transmits signals, ensuring accurate and timely detection information and providing reliable data for decision-making at the remote control center. The power supply assembly 20, in conjunction with the wireless charging component, enables energy storage and a stable supply, ensuring the detection system operates 24 / 7 without interruption and preventing detection failure due to insufficient power. The entire detection system boasts a sophisticated structure and comprehensive functions, enabling intelligent monitoring, early warning, and management of manhole covers, reducing maintenance costs, and enhancing safety and reliability.

[0093] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described above, and complete the electrical connection by referring to the working sequence of each electrical component. The detailed connection methods are well-known technologies in the field. The above content mainly introduces the working principle and process, and will not explain the electrical control.

[0094] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A smart manhole cover based on an IoT-based intelligent area management system, characterized in that: Including manhole covers and manhole bases that are connected to each other (21); The bottom of the manhole cover is provided with a locking mechanism, and the inner wall of the manhole seat (21) is provided with a fixing mechanism. The locking mechanism and the fixing mechanism can be opened and closed to realize the locking and unlocking of the manhole cover and the manhole seat (21). The bottom surface of the manhole cover is provided with several strain gauge sensors (3) and humidity sensors (4). The bottom surface of the manhole cover is also provided with a detection control box (19) and a power supply assembly (20). The strain gauge sensors (3), humidity sensors (4) and power supply assembly (20) are all electrically connected to the detection control box (19). The power supply assembly (20) provides working power to the detection control box (19), strain gauge sensors (3) and humidity sensors (4). The detection control box (19) is used to receive and process the detection signals transmitted by the strain gauge sensors (3) and humidity sensors (4).

2. The smart manhole cover of the IoT-based intelligent area management system according to claim 1, characterized in that: The detection control box (19) is equipped with a camera and a gas concentration sensor that are electrically connected to it. The camera is used to collect image information of the area under the manhole cover and the surrounding environment. The gas concentration sensor is used to detect the gas concentration information under the manhole cover. The information collected by the camera and the gas concentration sensor is transmitted to the detection control box (19) for processing.

3. The smart manhole cover of the IoT-based intelligent area management system according to claim 1, characterized in that: The manhole cover includes a cover body (1) that is interlocked and fixed together and a keel (2). The cover body (1) is made of fiberglass or engineering plastic, and the keel (2) is made of ductile iron. The bottom surface of the cover (1) is provided with a clamping plate (102) protruding from the center, and the bottom surface of the cover (1) is provided with an inner groove (101) on the outside of the clamping plate (102). The keel (2) includes a polygonal frame (201) located at the center, and triangular reinforcing ribs (202) are arranged radiating outward from the corners of the polygonal frame (201). Several reinforcing rings (203) are fitted on the triangular reinforcing ribs (202). The polygonal frame (201) and the triangular reinforcing rib (202) are inserted into the clamping plate (102), and the reinforcing ring (203) is inserted into the inner groove (101) to achieve a stable connection between the cover (1) and the keel (2).

4. The smart manhole cover of the IoT-based intelligent area management system according to claim 3, characterized in that: The locking mechanism includes a plum blossom turntable (6), a pull rod (7), and a hook plate (8) arranged coaxially with the cover (1). The top of the plum blossom turntable (6) is coaxially fixed with a rotating shaft (601), and the rotating shaft (601) is fitted with a rotatable snap ring (5) that is rotatably connected to it. The rotatable snap ring (5) is detachably fixed to the bottom surface of the cover (1). The circumferential surface of the plum blossom turntable (6) is provided with a circumferential annular groove (603), and the bottom or top surface of the circumferential annular groove (603) is provided with a snap-fit ​​annular groove (604). One end of the pull rod (7) is provided with a protruding insert rod (701), the insert rod (701) is slidably disposed in the snap ring groove (604), and the other end of the pull rod (7) is provided with an I-beam plate (702). The hook plate (8) includes a straight plate (801) and an L-shaped plate (802). One end of the straight plate (801) and the L-shaped plate (802) are fixedly arranged at an inclination. A waist-shaped hole (804) is provided on the straight plate (801). The I-beam plate (702) is engaged with the waist-shaped hole (804) and can slide along the waist-shaped hole (804). The straight plate (801) has rotating holes (803) on both sides below the waist-shaped hole (804). A rotating rod is inserted into the rotating hole (803) and rotated therewith. The end of the rotating rod is fixedly connected to the bottom surface of the cover (1). A support plate (13) is fixed on the polygonal frame (201), and a drive device for driving the plum blossom turntable (6) to rotate is provided on the support plate (13). The fixing mechanism includes a fixing seat (14) fixedly connected to the inner wall of the well base (21). The fixing seat (14) includes a horizontal plate (1401) and a vertical plate (1402). The vertical plate (1402) is fixedly connected to one end of the horizontal plate (1401) away from the center of the well base (21), and the vertical plate (1402) is fixedly connected to the inner wall of the well base (21). A locking hole (1405) is provided on the horizontal plate (1401). When the plum blossom turntable (6) rotates, the straight plate (801) of the hook plate (8) is pulled to a vertical position by the pull rod (7). At this time, the L-shaped plate (802) of the hook plate (8) moves down and passes through the locking hole (1405). When the plum blossom turntable (6) rotates in the opposite direction and pushes the pull rod (7) outward, the straight plate (801) of the hook plate (8) returns to its tilted arrangement. At this time, the L-shaped plate (802) engages with the locking hole (1405) to lock the well cover and the well seat (21).

5. The smart manhole cover of the IoT-based intelligent area management system according to claim 4, characterized in that: The bottom of the plum blossom turntable (6) is coaxially fixed with a toothed disc (602). The bottom surface of the toothed disc (602) is provided with an annular toothed ring. The middle of the toothed disc (602) is provided with a number of limiting holes (605) arranged in a ring array around its axis. The driving device is a telescopic control mechanism (9). The telescopic part of the telescopic control mechanism (9) is fixedly connected to a U-shaped plate (10). A rack part (1001) is provided on one side plate of the U-shaped plate (10). When the rack part (1001) moves to below the gear plate (602), the rack part (1001) meshes with the annular gear ring of the gear plate (602). A locator (11) is provided between the plum blossom turntable (6) and the support plate (13). The locator (11) is disc-shaped and has several positioning rods (1101) on it. The upper end of the positioning rod (1101) extends above the locator (11) and corresponds one-to-one with the limiting hole (605). The lower end of the positioning rod (1101) extends below the locator (11) and passes through the through hole opened on the support plate (13). The end of the positioning rod (1101) located below the support plate (13) is fixed with a limiting plate (1102). A first spring (12) is sleeved on the positioning rod (1101). The first spring (12) is located between the support plate (13) and the locator (11). Two trapezoidal blocks (1103) are protruding on the top surface of the locator (11). The inclined surface of the trapezoidal block (1103) faces the U-shaped plate (10), and the height of the trapezoidal block (1103) is greater than or equal to the depth of the positioning rod (1101) inserted into the limiting hole (605) in the limiting state. In the limited position state, the positioning rod (1101) is inserted into the corresponding limiting hole (605), the top surface of the trapezoidal block (1103) abuts against the bottom surface of the plum blossom turntable (6), and the U-shaped plate (10) is placed on the locator (11); When the pull rod (7) needs to be adjusted, the U-shaped plate (10) moves toward the trapezoidal block (1103), and after contact, it presses the trapezoidal block (1103) downward, thereby driving the positioning rod (1101) to move downward from the limiting hole (605). When the bottom surface of the U-shaped plate (10) abuts against the top surface of the trapezoidal block (1103), the positioning rod (1101) is completely moved out of the limiting hole (605). At this time, the rack part (1001) and the gear plate (602) are fully engaged. The U-shaped plate (10) continues to move, driving the plum blossom turntable (6) to rotate.

6. The smart manhole cover of the IoT-based intelligent area management system according to claim 4, characterized in that: A top block (15) is slidably disposed on the fixed base (14); The top block (15) includes a horizontally arranged ramp (1501), a T-shaped slider (1502) is provided at the bottom of the ramp (1501), and a groove (1404) is provided on the horizontal plate (1401), and the T-shaped slider (1502) is slidably disposed in the groove (1404); The top of the board (1501) is fixed with triangular blocks (1503) and baffles (1504) at intervals. The inclined surface of the triangular blocks (1503) faces the baffles (1504) and the inclined surface of the triangular blocks (1503) faces away from the hook plate (8). A pressure block (1601) is provided between the triangular block (1503) and the baffle (1504). A vertically arranged top support rod (16) is fixed above the pressure block (1601). A top plate (1403) is fixedly connected above the horizontal plate (1401) at intervals. A through hole is provided on the top plate (1403). The upper end of the top support rod (16) passes through the through hole. A second spring (17) is sleeved on the top support rod (16). The second spring (17) is located below the top plate (1403). A third spring (18) is provided between the top block (15) and the vertical plate (1402) of the fixed base (14). Under the elastic thrust of the third spring (18), the end face of the top block (15) abuts against the straight plate (801) of the hook plate (8).

7. The smart manhole cover of the IoT-based intelligent area management system according to claim 6, characterized in that: The cover (1) has several side grooves (103) on its circumferential surface. A side block (204) is snapped into the side groove (103). The side block (204) is integrally formed with the triangular reinforcing rib (202) or reinforcing ring (203) of the keel (2). An insertion hole (205) is provided on the outer surface of the side block (204). As the straight plate (801) of the hook plate (8) rotates to the vertical position, the straight plate (801) pushes the top block (15) outward to slide along the slide groove (1404). The top block (15) drives the triangular block (1503) to move synchronously. The inclined surface of the triangular block (1503) presses the pressure block (1601) upward, thereby driving the top support rod (16) to move upward and pushing the well cover to move upward. When the straight plate (801) is in a vertical state, the outer ring of the insertion hole (205) is exposed to the outside of the well seat (21).

8. The smart manhole cover of the IoT-based intelligent area management system according to claim 1, characterized in that: The well base (21) includes a cylindrical insertion part (2101), the outer side of the insertion part (2101) is provided with a cover extension (2102), the inner side of the insertion part (2101) is provided with a mounting platform (2103), and the well cover is placed on the mounting platform (2103); The mounting platform (2103) has two sealing grooves (2104), and a detection groove (2105) is provided between the two sealing grooves (2104). A sealing ring (22) is provided inside the sealing groove (2104), and the humidity sensor (4) is provided inside the detection groove (2105). The well base (21) is equipped with a wireless charging component, which includes a wireless charging plate (23). One end of the wireless charging plate (23) is provided with a rotating rod. The end of the rotating rod is coaxially fixedly connected to a gear (2301). A rotating sleeve (24) is sleeved on the rotating rod. The rotating sleeve (24) is fixedly connected to the inner wall of the insertion part (2101). A sliding sleeve (26) is fixedly connected to the inner wall of the insertion part (2101). A rack rod (25) that can slide up and down is sleeved inside the sliding sleeve (26). The rack rod (25) is meshed with the gear (2301). When the manhole cover is placed on the mounting platform (2103), the manhole cover presses down the rack rod (25) and slides down along the sliding sleeve (26). The rack rod (25) drives the gear (2301) to rotate, which in turn drives the wireless charging plate (23) to rotate to a horizontal state. The horizontal wireless charging plate (23) is located below the power assembly (20) and is used to wirelessly charge the power assembly (20). After the manhole cover is removed from the mounting platform (2103), the wireless charging plate (23) rotates to a vertical position under its own gravity, and at the same time drives the gear (2301) to rotate in the opposite direction, thereby driving the rack rod (25) to move upward along the sliding sleeve (26), so that the upper end of the rack rod (25) extends to the outside of the manhole seat (21).

Images