Intelligent well lid device

Abstract

The invention discloses an intelligent well lid device which comprises a child-mother layer well lid, the child-mother layer well lid comprises a child layer well lid and a mother layer well lid, the child layer well lid is nested in the mother layer well lid, the child layer well lid and the mother layer well lid are connected through a scissor fork lifting mechanism, and the intelligent well lid device further comprises a control system and a solar power supply system installed on the child layer well lid; the solar power supply system is electrically connected with the shear fork lifting mechanism, and the shear fork lifting mechanism is in communication connection with the control system. The shear fork lifting mechanism comprises a shear fork type connecting rod mechanism and a hydraulic driving system, wherein the shear fork type connecting rod mechanism is connected with the sub-layer well lid body and the mother-layer well lid body, and the hydraulic driving system drives the shear fork type connecting rod mechanism to ascend and descend. Through multi-path water inflow and optimization, the drainage efficiency is remarkably improved, accumulated water is reduced, and the urban waterlogging risk is effectively reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of municipal engineering drainage system engineering, and specifically relates to an intelligent manhole cover device integrating functions of automatic drainage, sewage cleaning, anti-blocking, and rainfall monitoring. Background Art

[0002] With the accelerating advancement of urbanization, the urban scale is constantly expanding, the population density is increasing, and municipal infrastructure is facing unprecedented challenges. As a key component of the urban drainage system, the performance of manhole covers directly affects the urban drainage efficiency and flood control safety. In the current municipal drainage system, a series of serious problems have emerged in traditional manhole covers when dealing with extreme rainstorm weather. Traditional manhole covers generally adopt a single drainage port design, and the drainage port size is fixed and relatively small. In rainstorm weather, a large amount of rainwater mixed with leaves, branches, garbage and other sundries floods into the drainage system, which is extremely easy to cause blockage of the drainage port. Once the drainage port is blocked and the rainwater cannot be discharged in time, it will quickly accumulate on the road surface, forming a large area of water accumulation. This will not only lead to the paralysis of road traffic and the obstruction of vehicle passage, but may also cause safety accidents such as pedestrian slips and vehicle stalls, seriously affecting the normal operation of the city and the lives of residents, and causing huge social impacts and economic losses. From the perspective of maintenance management, the maintenance work of traditional manhole covers is difficult and costly. In order to ensure the smoothness of the drainage system, it is necessary to regularly arrange professional personnel for manual dredging operations. However, manual dredging not only consumes a large amount of manpower, material resources and time, but also the working environment is harsh. The staff needs to work in a narrow, humid and possibly toxic and harmful gas space underground, facing relatively high safety risks. In terms of intelligence, there is almost no relevant technology application in traditional manhole covers, lacking effective water level monitoring and rainfall monitoring means, and unable to obtain the operation data of the drainage system in real time. This results in that when facing sudden rainfall, relevant departments are difficult to timely and accurately master the water accumulation situation, unable to issue early warnings in advance, and unable to dynamically adjust the drainage plan according to the actual rainfall intensity and water accumulation depth. The slow response of the drainage system seriously affects the city's ability to cope with extreme weather such as rainstorms and increases the risk of urban waterlogging.

[0003] Although some so-called intelligent manhole covers have improved the functions of traditional manhole covers to a certain extent, there are still obvious defects. Most of these intelligent manhole covers rely on external power supply. Once a power outage or a power supply line failure occurs, they will immediately stop working, with poor stability and reliability. At the same time, this power supply method relying on external energy not only does not conform to the current development concept of energy conservation and environmental protection, but also increases energy consumption and operation costs.

[0004] In summary, the problems of traditional manhole covers in terms of drainage efficiency, maintenance difficulty, degree of intelligence, and energy supply seriously restrict the efficient operation of the urban drainage system. Therefore, it is necessary to design an intelligent manhole cover device based on innovative structure and intelligent control to solve the above technical problems. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides an intelligent manhole cover device, which significantly improves the drainage efficiency and the effectiveness of automatic cleaning operations through innovative design and the application of intelligent technologies.

[0006] The object of the present invention is achieved through the following technical solutions: An intelligent manhole cover device includes a mother-daughter layer manhole cover. The mother-daughter layer manhole cover includes a daughter layer manhole cover and a mother layer manhole cover. The daughter layer manhole cover is nested inside the mother layer manhole cover. The daughter layer manhole cover and the mother layer manhole cover are connected by a scissor lift mechanism. It also includes a control system and a solar power supply system installed on the daughter layer manhole cover. The solar power supply system is electrically connected to the scissor lift mechanism to provide power for the scissor lift mechanism. The scissor lift mechanism is communicatively connected to the control system. The scissor lift mechanism includes a scissor-link mechanism connecting the daughter layer manhole cover and the mother layer manhole cover and a hydraulic drive system. The hydraulic drive system drives the scissor-link mechanism to lift and lower. The scissor-link mechanism includes scissor arms. The scissor arms are formed by a first group of metal rods arranged crosswise and a second group of metal rods arranged crosswise, which are hinged by a connecting shaft. The upper and lower ends of the same side of the scissor arms are respectively hinged to the corresponding daughter layer manhole cover and mother layer manhole cover by pin shafts. A mother layer manhole cover guide rail is arranged inside the mother layer manhole cover, and a daughter layer manhole cover guide rail is arranged inside the daughter layer manhole cover. The lower end of the other side of the scissor arm is connected to the bottoms of the first group of metal rods and the second group of metal rods on one side through a sliding rod. The two ends of the sliding rod are slidably connected inside the mother layer manhole cover guide rail.

[0007] In the above intelligent manhole cover device, movable louvers are arranged inside the daughter layer manhole cover. The movable louvers include fan blades. The fan blades are linked with the scissor arms through a fan blade transmission device. The fan blade transmission device adopts a gear-rack transmission. The two ends of the fan blade rotating shaft at the top of the fan blade are hinged inside the daughter layer manhole cover frame. A fan blade connecting rod is fixedly installed at the lower end of the fan blade. A gear is fixedly installed at the bottom end of the fan blade connecting rod. The gear meshes with the rack on the lower transmission rod. The transmission rod is connected to the guide rail web of the mother layer manhole cover guide rail. The upper ends of the first group of metal rods and the second group of metal rods corresponding to the sliding rod are respectively hinged to the side surface of the corresponding transmission rod.

[0008] For the above intelligent manhole cover device, the hydraulic drive system includes a hydraulic cylinder, an electromagnetic directional control valve, a relay, and a wireless receiver. A middle bracket is installed inside the mother-layer manhole cover. The wireless receiver is fixed to the side of the middle bracket of the mother-layer manhole cover by screws, avoiding the movement path of the piston rod. It is connected to the relay through waterproof terminals and then connected to the electromagnetic directional control valve. The electromagnetic directional control valve drives the displacement of the spool by energizing and de-energizing the electromagnet, switching the oil circuit direction to control the telescopic movement of the hydraulic cylinder. One end of the hydraulic cylinder is fixed to the middle bracket of the mother-layer manhole cover by a ball joint, and the other end is connected to the middle of the scissor arm by a ball joint.

[0009] For the above intelligent manhole cover device, it further includes a pressure sensor. A special groove is provided inside the frame of the mother-layer manhole cover. The pressure sensor includes a probe and a wireless controller. The probe is embedded in the special groove and then covered with a high-strength hard sheet material. The wireless controller is installed on the inner wall of the lower part of the mother-layer manhole cover by bolts. The probe is connected to the wireless controller through a wire. The water pressure signal is transmitted to the wireless controller through the probe. The wireless controller is communicatively connected to the control system. Both the wireless controller and the probe are powered by a solar power supply system.

[0010] For the above intelligent manhole cover device, the wireless receiver of the hydraulic drive system is communicatively connected to the control system. The probe continuously monitors the water level in the water storage tank. When the water level reaches the preset height, the control system starts the hydraulic cylinder to lift the sub-layer manhole cover upward, and at the same time opens the fan blades of the louvers, enabling drainage from above and all around, greatly increasing the drainage volume. The control system is communicatively connected to a remote monitoring center or a local drainage management system.

[0011] For the above intelligent manhole cover device, the solar power supply system includes a solar panel, a charge controller, and a solar energy storage battery. The solar panel is connected to the solar energy storage battery through the charge controller. The solar panel is embedded in the lifted end of the fan blade of the sub-layer manhole cover, covering 50% of the upper surface area of the fan blade, and is fixed to the upper surface of the sub-layer manhole cover by a snap-on bracket. The bottom of the bracket is bolted to the manhole cover frame. The wire is arranged along the lower surface of the fan blade and accesses the solar energy storage battery inside the sub-layer manhole cover frame through the internal channel of the fan blade shaft. The charge controller is fixed to the upper surface of the middle bracket of the sub-layer manhole cover, near the solar wire inlet. The lithium battery energy storage battery is laid flat on the upper surface of the middle bracket of the sub-layer manhole cover, avoiding the movement path of the lifting mechanism, and is fixed by nylon straps and shock pads.

[0012] Compared with the prior art, the present invention has the following technical effects: The drainage efficiency is significantly improved: Through multi-channel water inlet and optimization, the drainage efficiency is significantly increased, water accumulation is reduced, and the risk of urban waterlogging is effectively reduced.

[0013] Intelligent regulation is precise and efficient: Through pressure sensors and intelligent control systems, the water level and rainfall are monitored in real time. According to the monitoring data, the drainage strategy is dynamically adjusted, and warning signals are sent in a timely manner to improve the intelligent management level of the drainage system.

[0014] Energy self - sufficiency and environmental protection: Adopting a solar power supply system, which is environmentally friendly and stable, can adapt to different environments, reduce the dependence on external energy, and conform to the concept of energy conservation and environmental protection. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the scissor - type connecting rod mechanism of the present invention; Figure 3 is a schematic structural diagram of the fan blade transmission device of the present invention; Figure 4 is a schematic structural diagram of the hydraulic drive system of the present invention; Figure 5 is a schematic connection diagram of the pressure sensor of the present invention; Figure 6 is a schematic connection diagram of the solar power supply system of the present invention. Detailed Embodiments

[0016] To make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the attached Figures 1-6 drawings in the embodiments of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0018] An intelligent manhole cover device, as Figure 1As shown in the figure, it includes a mother - and - son - layer manhole cover 1. The mother - and - son - layer manhole cover includes a son - layer manhole cover 12 and a mother - layer manhole cover 11. The son - layer manhole cover is nested inside the mother - layer manhole cover. The son - layer manhole cover and the mother - layer manhole cover are connected by a scissor - lift mechanism 2. It also includes a control system 5 and a solar power supply system 4 installed on the son - layer manhole cover. The solar power supply system is electrically connected to the scissor - lift mechanism to provide power for the scissor - lift mechanism. The scissor - lift mechanism is communicatively connected to the control system. The scissor - lift mechanism includes a scissor - type link mechanism 2 connecting the son - layer manhole cover and the mother - layer manhole cover and a hydraulic drive system 22. The hydraulic drive system drives the scissor - type link mechanism to lift and lower. The scissor - type link mechanism 2 includes scissor arms 21. The scissor arms are formed by a first group of metal rods 21a arranged cross -wise and a second group of metal rods 21b arranged cross -wise through a connecting shaft for hinging. The upper and lower ends on the same side of the scissor arm 21 are respectively hinged to the corresponding son - layer manhole cover and mother - layer manhole cover through pin shafts. On the inner side of the mother - layer manhole cover 11, a mother - layer manhole cover guide rail 23b is provided. On the inner side of the son - layer manhole cover 12, a son - layer manhole cover guide rail 23a is provided. The lower end on the other side of the scissor arm is connected to the bottoms of the first group of metal rods 21a and the second group of metal rods 21b on one side through a slide bar 24. The two ends of the slide bar are slidably connected within the mother - layer manhole cover guide rail 23b. The intelligent manhole cover device described in the present invention, as Figure 3 and Figure 4 shown in the figure, a movable louvre - type cross - bar 3 is arranged inside the son - layer manhole cover 11. The movable louvre - type cross - bar includes fan blades 31. The fan blades are linked with the scissor arms 21 through a fan - blade transmission device. The fan - blade transmission device adopts a gear - rack transmission. The two ends of the fan - blade rotating shaft at the top of the fan blade 31 are hinged within the son - layer manhole cover frame. A fan - blade connecting rod 34 is fixedly installed at the lower end of the fan blade. A gear 35 is fixedly installed at the bottom end of the fan - blade connecting rod. The gear 35 meshes with the rack on its lower transmission rod 33. The transmission rod 33 is connected to the guide - rail width of the mother - layer manhole cover guide rail 23b. The upper ends of the corresponding first group of metal rods and the second group of metal rods of the slide bar 24 are respectively hinged to the side surface of the corresponding transmission rod 33.

[0019] As Figure 2 shown in the figure, the hydraulic drive system includes a hydraulic cylinder 22a, an electromagnetic reversing valve 22b, a relay 22c, and a wireless receiver 22d. A middle support 6 is installed inside the mother - layer manhole cover. The wireless receiver 22d is fixed to the side surface of the middle support of the mother - layer manhole cover through screws, avoiding the movement path of the piston rod. It is connected to the relay 22c through a waterproof terminal and then connected to the electromagnetic reversing valve 22b. The electromagnetic reversing valve 22b drives the valve core to displace by electrifying and de - electrifying the electromagnet, switching the oil - circuit direction to control the telescopic movement of the hydraulic cylinder 22a. One end of the hydraulic cylinder 22a is fixed to the middle support of the mother - layer manhole cover 11 through a ball joint, and the other end is connected to the middle of the scissor arm 21 through a ball joint.

[0020] The intelligent manhole cover device described in the present invention, as Figure 5As shown in the figure, it also includes a pressure sensor which is arranged in a dedicated groove within the frame of the mother-layer manhole cover 11. The pressure sensor consists of two parts: a probe and a wireless controller. The probe 51 is embedded in the dedicated groove and then covered with a high-strength hard sheet material. The wireless controller 52 is installed on the inner wall of the lower part of the mother-layer manhole cover through bolts. The probe is connected to the wireless controller 52 through a wire. The water pressure signal is transmitted from the probe to the wireless controller, and the wireless controller is communicatively connected to the control system. Both the wireless controller and the probe are powered by a solar power supply system.

[0021] The intelligent manhole cover device described in the present invention, as Figure 4 shown in the figure, the wireless receiver 22d of the hydraulic drive system is communicatively connected to the control system. The probe continuously monitors the water level in the water storage tank. When the water level reaches the preset height, the control system activates the hydraulic cylinder to lift the sub-layer manhole cover, and at the same time opens the fan blades of the louvers, enabling drainage from above and all around, significantly increasing the drainage volume; the control system is communicatively connected to a remote monitoring center or a local drainage management system.

[0022] The intelligent manhole cover device described in the present invention, as Figure 6 shown in the figure, the solar power supply system includes a solar panel 41, a charge controller, and a solar energy storage battery 43. The solar panel is connected to the solar energy storage battery through the charge controller. The solar panel 41 is embedded in the raised end of the fan blade of the sub-layer manhole cover 12, covering 50% of the upper surface area of the fan blade, and is fixed to the upper surface of the sub-layer manhole cover 12 through a snap-on bracket. The bottom of the bracket is bolted to the manhole cover frame; the wire is arranged along the lower surface of the fan blade and accesses the solar energy storage battery 43 within the frame of the sub-layer manhole cover 12 through the internal channel of the fan blade shaft; the charge controller 42 is fixed on the upper surface of the middle bracket of the sub-layer manhole cover, near the solar wire inlet; the lithium battery energy storage battery 43 is laid flat on the upper surface of the middle bracket of the sub-layer manhole cover, avoiding the movement path of the lifting mechanism, and is fixed through nylon straps and shock pads.

[0023] The mother-layer manhole cover of the present invention is carried on the wellhead and is flush with the road surface. It is made of high-strength cast iron or ductile iron and has anti-slip textures on its surface, capable of bearing vehicle and pedestrian loads. The sub-layer manhole cover is embedded within the mother-layer manhole cover, and a sealing rubber gasket is installed on the contact surface between the two to prevent debris from entering. The material of the sub-layer manhole cover is similar to that of the mother-layer, but it is thinner to facilitate lifting.

[0024] The hydraulic drive system of the present invention mainly includes a hydraulic cylinder, an electromagnetic directional valve, a relay, and a wireless receiver One end of the hydraulic cylinder is installed on the middle bracket of the mother-layer manhole cover and is fixed through a spherical hinge; the other end is connected to the middle part of the scissor arm, enabling the hydraulic cylinder to drive the scissor arm to perform lifting and lowering movements, and the connection between the hydraulic cylinder and the scissor arm should be tight to ensure the stability of power transmission.

[0025] The base of the hydraulic cylinder body is rigidly connected to the middle bracket of the parent layer manhole cover through a high-strength bolt assembly, and the end of the piston rod and the kinematic interface of the midpoint of the scissor arm are connected by a ball joint.

[0026] The wireless receiver installation position of the present invention is: the receiver is fixed to the side of the middle bracket of the parent layer manhole cover with screws to avoid the movement path of the piston rod.

[0027] Preferred choice: The side of the base bracket is fixed with a U-shaped clamp to facilitate maintenance and reduce vibration.

[0028] The power supply and signal connection of the present invention are as follows: Power access: Take power from the hydraulic system control box or solar energy storage battery and connect through waterproof terminals.

[0029] Signal interface: The receiver output is connected to the solenoid valve via a relay.

[0030] Solenoid reversing valve: Direction switching: The valve core is driven to move by energizing / de-energizing the electromagnet, switching the direction of the oil circuit, and controlling the extension or retraction of the hydraulic cylinder.

[0031] Action response: Directly receive the electrical signal from the wireless controller to quickly raise or lower the sub-layer manhole cover in response to water level changes.

[0032] Installation method: The bracket is fixed to the side of the hydraulic cylinder barrel by welding.

[0033] wire: Waterproof connectors are used at interfaces where wires need to be connected to extend their service life.

[0034] guide: Installed around the lifting device, it provides precise guidance for the movement of the scissor arm or work surface, allowing it to rise and fall along a predetermined straight line trajectory, ensuring the accuracy and stability of the movement and reducing deviation and shaking.

[0035] When the actuator is actuated, the scissor-type linkage mechanism produces vertical displacement, driving the blades to complete synchronous lifting and lowering movements. Periodic lubrication maintenance is performed on each moving pair to effectively reduce friction loss and ensure the service life of the equipment.

[0036] The connection between the scissor-type linkage mechanism and the parent-child layer manhole cover is as follows: The parent layer manhole cover is fixed to the device below by anchor bolts to ensure the stability of the equipment; it is connected to the lower end of the scissor arm by a pin shaft so that the scissor arm can rotate around the connection point.

[0037] The sub-layer manhole cover is installed on the top of the scissor arm and fixed to the scissor arm by welding and bolt connection to ensure that it can bear the load and move smoothly with the lifting of the scissor arm.

[0038] Movable louvre-type crossbars Structural design The crossbars of the manhole cover grating adopt a louvre-type design, and each crossbar is composed of multiple blades arranged in parallel. The blades are made of thin and strong metal materials or high-strength engineering plastics, and the surface is treated with anti-slip and anti-corrosion. The initial angle between the blades is between 30° and 60°. The spacing between the crossbars is determined according to the size of common local sundries and drainage requirements to ensure that rainwater can pass smoothly while blocking sundries.

[0039] Automatic adjustment mechanism When the rainwater flow increases and the sub-cover rises under the action of the scissor-link mechanism, the blades of the movable louvre-type crossbars adjust the angle through the blade transmission device and gradually become orthogonal to the sub-layer manhole cover, increasing the water passing area. There are reliable limit and buffer structures during the process of blade angle change to ensure smooth and reliable operation.

[0040] Blade transmission device In this mechanical structure, the principle of gear-rack transmission is used to achieve linkage. The transmission rod of the scissor arm is connected to the transmission rod of the blade and can move synchronously. Among them, the blade transmission rod adopts a rack structure and meshes with the gear installed on the blade. The gear is also connected to the blade rotating rod.

[0041] When the transmission rod of the scissor arm drives the transmission rod of the blade to move, it will cause the meshing gear to rotate, and then drive the rotating rod to rotate, finally realizing the rotation of the blade by a certain angle, completing the opening and closing action of the blade, and achieving the linkage effect between the blade and the scissor arm.

[0042] Solar cell power supply Flexible amorphous silicon solar panels are installed on the upper surface of the sub-layer manhole cover, and its area is determined according to the power consumption requirements of the intelligent control system and local sunshine conditions. A charging controller and a lithium battery energy storage battery are provided inside the sub-layer manhole cover frame, and the charging controller is used to regulate the charging process to ensure the safety of the battery.

[0043] The solar panels are embedded in the lifting ends of each fan blade, covering 50% of the upper surface area of the fan blade, and are firmly fixed using weather-resistant sealant. The wires are arranged along the lower surface of the fan blade and are connected to the energy storage battery inside the sub-layer manhole cover frame through the channels inside the fan blade rotating shaft to achieve efficient energy collection and storage.

[0044] Installation positions of the charging controller and the lithium battery energy storage battery: Charging controller: Fixed on the upper surface of the middle bracket of the sub-layer manhole cover, close to the solar wire inlet (fan blade rotating shaft channel) to shorten the wiring distance.

[0045] Lithium battery pack: Laid flat on the upper surface of the middle bracket of the sub-layer manhole cover, avoiding the movement path of the lifting mechanism, and fixed by nylon straps + shock pads.

[0046] Intelligent control Pressure sensor: Pressure sensor: The pressure sensor is embedded in a special groove on the upper surface of the mother-layer manhole cover, used to detect the water pressure change in real time and indirectly measure the water level. The sensor fits tightly against the inner wall of the groove to ensure the measurement accuracy. The opening of the groove is covered with a high-strength hard sheet material and fixed to the edge of the groove by screws to prevent debris from entering and protect the sensor. The water pressure signal is transmitted to the controller through a wire passing through the mother-layer manhole cover to ensure the reliability of signal transmission.

[0047] Wireless controller: The wireless controller is located at the lower part of the mother-layer manhole cover and fixed to the inner wall of the manhole cover by four screws. The controller is connected to the pressure sensor through a wire and is used to receive and process the water pressure signal. The controller is built-in with a Bluetooth module and can wirelessly transmit the signal to the hydraulic drive system. When the detected water level exceeds the preset threshold, the controller drives the hydraulic rod to extend and lift the sub-layer manhole cover to achieve the automatic drainage function.

[0048] Intelligent drainage control is achieved through the pressure sensor and the wireless controller. The pressure sensor detects and predicts the best start-up time according to the magnitude and rising trend of the incoming water pressure. At the same time, the wireless controller controls the scissor lift to adjust the height of the sub-layer manhole cover according to the water level change. The wireless controller monitors the power generation of the solar battery in real time and stores the excess electric energy, sets multi-level water level thresholds (warning / action / emergency), and dynamically adjusts the opening height of the manhole cover in combination with the rising rate.

[0049] The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the overall concept of the present invention, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent manhole cover device, comprising a mother - and - son - layer manhole cover (1), the mother - and - son - layer manhole cover including a son - layer manhole cover (12) and a mother - layer manhole cover (11), the son - layer manhole cover being nested inside the mother - layer manhole cover, characterized in that: The sub-layer manhole cover is connected to the mother-layer manhole cover through a scissor lift mechanism (2), and further includes a control system (5) and a solar power supply system (4) installed on the sub-layer manhole cover; the solar power supply system is electrically connected to the scissor lift mechanism to provide power for the scissor lift mechanism, and the scissor lift mechanism is communicatively connected to the control system; the scissor lift mechanism includes a scissor-link mechanism (2) connecting the sub-layer manhole cover and the mother-layer manhole cover and a hydraulic drive system (22), and the hydraulic drive system drives the scissor-link mechanism to lift; the scissor-link mechanism (2) includes scissor arms (21), and the scissor arms are composed of a first group of metal rods (21a) arranged in a first group in a crosswise manner and a second group of metal rods (21b) arranged in a second group in a crosswise manner and are hinged through a connecting shaft. The upper and lower ends on the same side of the scissor arm (21) are respectively hinged to the corresponding sub-layer manhole cover and mother-layer manhole cover through pin shafts. A mother-layer manhole cover guide rail (23b) is arranged inside the mother-layer manhole cover (11), and a sub-layer manhole cover guide rail (23a) is arranged inside the sub-layer manhole cover (12). The lower end on the other side of the scissor arm is connected to the bottoms of the first group of metal rods (21a) and the second group of metal rods (21b) on one side through a slide rod (24), and both ends of the slide rod are slidably connected inside the mother-layer manhole cover guide rail (23b).

2. The intelligent manhole cover device according to claim 1, characterized in that: A movable louvre-type cross bar (3) is arranged inside the sub-layer manhole cover (11). The movable louvre-type cross bar includes fan blades (31), and the fan blades are linked with the scissor arm (21) through a fan blade transmission device; the fan blade transmission device adopts a gear-rack transmission; both ends of the fan blade shaft at the top of the fan blade (31) are hinged inside the sub-layer manhole cover frame. A fan blade connecting rod (34) is fixedly installed at the lower end of the fan blade, and a gear (35) is fixedly installed at the bottom end of the fan blade connecting rod. The gear (35) meshes with the rack on its lower transmission rod (33); the transmission rod (33) is connected to the guide rail width of the mother-layer manhole cover guide rail (23b), and the upper ends of the corresponding first group of metal rods and the second group of metal rods of the slide rod (24) are respectively hinged to the side surface of the corresponding transmission rod (33).

3. The intelligent manhole cover device according to claim 1, characterized in that: The hydraulic drive system includes a hydraulic cylinder (22a), an electromagnetic reversing valve (22b), a relay (22c), and a wireless receiver (22d). A middle support (6) is installed inside the mother-layer manhole cover. The wireless receiver (22d) is fixed to the side surface of the middle support in the middle of the mother-layer manhole cover through screws, avoiding the movement path of the piston rod, and is connected to the relay (22c) through waterproof terminals and then connected to the electromagnetic reversing valve (22b). The electromagnetic reversing valve (22b) drives the spool to displace by energizing and de-energizing the electromagnet, switching the oil circuit direction to control the telescopic movement of the hydraulic cylinder (22a); one end of the hydraulic cylinder (22a) is fixed to the middle support of the mother-layer manhole cover (11) through a ball joint, and the other end is connected to the middle of the scissor arm (21) through a ball joint.

4. The intelligent manhole cover device according to claim 3, characterized in that: It further includes a pressure sensor. Inside a dedicated groove provided within the frame of the mother-layer manhole cover (11), the pressure sensor consists of two parts: a probe and a wireless controller. The probe (51) is embedded in this dedicated groove and then covered with a high-strength rigid sheet material. The wireless controller (52) is installed on the inner wall of the lower part of the mother-layer manhole cover by bolts. The probe is connected to the wireless controller (52) through a wire. The water pressure signal is transmitted to the wireless controller through the probe. The wireless controller is communicatively connected to the control system. Both the wireless controller and the probe are powered by a solar power supply system.

5. The intelligent manhole cover device according to claim 3, characterized in that: The wireless receiver (22d) of the hydraulic drive system is communicatively connected to the control system. The probe continuously monitors the water level in the water storage tank. When the water level reaches the preset height, the control system activates the hydraulic cylinder to lift the sub-layer manhole cover upward, and at the same time opens the fan blades of the louvers, enabling drainage from above and all around, significantly increasing the drainage volume. The control system is communicatively connected to a remote monitoring center or a local drainage management system.

6. The intelligent manhole cover device according to claim 1, characterized in that: The solar power supply system includes a solar panel (41), a charge controller, and a solar energy storage battery (43). The solar panel is connected to the solar energy storage battery through the charge controller. The solar panel (41) is embedded in the lifting end of the fan blade of the sub-layer manhole cover (12), covering 50% of the upper surface area of the fan blade, and is fixed to the upper surface of the sub-layer manhole cover (12) through a snap-on bracket. The bottom of the bracket is bolted to the manhole cover frame. The wire is arranged along the lower surface of the fan blade and accesses the solar energy storage battery (43) within the frame of the sub-layer manhole cover (12) through the internal channel of the fan blade shaft. The charge controller (42) is fixed on the upper surface of the middle bracket of the sub-layer manhole cover, near the solar wire inlet. The lithium battery energy storage battery (43) is laid flat on the upper surface of the middle bracket of the sub-layer manhole cover, avoiding the movement path of the lifting mechanism, and is fixed through nylon straps and shock pads.

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