An electronic well lid based on electrically controlled travel switch control and a method thereof

Abstract

The application discloses an electronic well lid based on electric travel switch control and a method thereof, and belongs to the technical field of well lids. In order to solve the problem that it is difficult to control the number of drainage outlets and the opening and closing conditions of the well lid, a plurality of flow control openings are formed in the top surface of the electronic well lid body, and a control assembly is arranged in the middle of the bottom surface of the electronic well lid body. When the drainage demand increases, the adjustment rail assembly and the multi-stage baffle can be adjusted according to the real-time monitoring of the road waterlogging condition, the multi-stage flow control opening can be remotely controlled to be opened or closed, the drainage efficiency is improved, the safety hidden danger caused by waterlogging is effectively reduced, the remote monitoring and operation can be realized by controlling the adjustment rail assembly and the multi-stage baffle through the remote electric control system, the staff can conveniently maintain and manage the drainage outlet, the drainage amount can be accurately controlled, the waste of water resources is avoided, the number of the multi-stage flow control openings can be controlled by the electric control when the drainage amount needs to be increased, the influence on the surrounding environment can be reduced, and the noise and peculiar smell are reduced.

Description

Technical Field

[0001] This invention relates to the field of manhole cover technology, and in particular to an electronic manhole cover and method based on electronically controlled limit switches. Background Technology

[0002] Manhole covers are used to cover deep wells in roads or homes to prevent people or objects from falling in. They can be classified by material, such as metal manhole covers, high-strength fiber cement concrete manhole covers, and resin manhole covers. They are generally round. They can be used in green belts, sidewalks, driveways, docks, alleys, etc. On city streets, drainage manhole covers play a crucial role in facilitating rainwater drainage. Especially in my country's summers, with frequent and heavy rainfall, failure to promptly drain rainwater from streets can negatively impact urban traffic.

[0003] In the field of manhole cover technology, there are already relevant patents. For example, patent CN106320384A discloses an anti-theft electronic manhole cover, including a manhole ring and a large manhole cover body. This anti-theft electronic manhole cover also includes an electronic lock crank-connecting rod mechanism, an electronic lock, and a circular connecting rod groove. The electronic lock is installed on the large manhole cover body, and the manhole ring and the large manhole cover body are movably connected. The circular connecting rod groove is set on the manhole ring, and the large manhole cover body consists of an upper cover and a lower cylinder, with the upper cover being larger than the lower cylinder. This patent can monitor the theft and damage of manhole covers in real time, and its anti-theft performance is excellent.

[0004] However, the aforementioned patents still have the following problems in actual operation:

[0005] Under current technology, manhole covers can only rely on natural gravity to drain water through fixed drainage outlets. This may result in low drainage efficiency and potential safety hazards. Water accumulation on the road can prevent people from noticing whether the manhole cover is open or closed in time, which can easily lead to accidents. At the same time, manhole covers usually need to be opened or closed manually to control the drainage volume, which increases the difficulty and cost of maintenance. Summary of the Invention

[0006] The purpose of this invention is to provide an electronic manhole cover and method based on electronically controlled limit switches to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an electronic manhole cover based on an electronically controlled limit switch, comprising an electronic manhole cover body, a manhole passage, and a manhole seat, characterized in that: the electronic manhole cover body is detachably mounted on the top of the manhole passage, a manhole seat is mounted on the bottom of the manhole passage, a limit switch is mounted at the manhole opening, a fixing buckle is mounted on the inner wall of the manhole passage, a filter screen is mounted inside the manhole passage, and an installation ring is mounted on the top of the filter screen, the installation ring being bolted to the fixing buckle.

[0008] Furthermore, the electronic manhole cover body has drainage holes on both sides of its top surface, a manual component in the center of its top surface, a multi-stage flow control port between the drainage holes and the manual component, reinforcing ribs on its bottom surface, a control component in the center of its bottom surface, a waterproof housing at the bottom of the control component, and adjusting rail components on both sides of the control component on the bottom surface of the electronic manhole cover body. Side grooves are provided on both sides of the control component, and multi-stage baffles are slidably arranged inside the adjusting rail components.

[0009] Furthermore, the multi-level flow control ports are arranged in groups of three, with a group of three multi-level flow control ports respectively provided on both sides of the top surface of the electronic manhole cover body, and the multi-level flow control ports are arranged in an arc shape as a whole.

[0010] Furthermore, the adjusting rail assembly includes a first slide rail, a second slide rail, and a third slide rail. Multi-stage baffles are slidably disposed within the first, second, and third slide rails. The first, second, and third slide rails are all arc-shaped. The first slide rail is disposed on the side away from the control component, the third slide rail is disposed on the side closer to the control component, and the second slide rail is disposed between the first and third slide rails. Each of the first, second, and third slide rails has a drainage hole. The position and size of the three drainage holes are matched with the multi-stage flow control port. The third slide rail has a slide channel inside, which is connected to the drainage hole inside the third slide rail.

[0011] Furthermore, the multi-stage baffle includes a first baffle, a second baffle, and a third baffle. The first baffle is slidably disposed inside the first slide rail, the second baffle is slidably disposed inside the second slide rail, and the third baffle is slidably disposed inside the third slide rail. Sliding arc grooves are provided on the inner sides of the first baffle and the second baffle. Sliding ends are provided on the outer sides of the second baffle and the third baffle. The sliding ends are slidably disposed inside the sliding arc grooves. A connecting end is provided at the bottom of the third baffle. The connecting end passes through the sliding arc grooves and is connected to the control component.

[0012] Furthermore, the manual component includes a turntable, a handle, a first sector, a second sector, a cross knob, and a driven knob. The turntable is rotatably disposed inside the manual component. The central axis of the turntable is connected to the control component. Handles are disposed on both sides of the turntable. The top of the turntable is disposed on the first sector and the second sector. A cross knob is disposed at one end of the first sector, and a driven knob is disposed at one end of the second sector. The bottoms of both the cross knob and the driven knob are rotatably connected to the electronic manhole cover body. Gear teeth are disposed on the central axis of both the cross knob and the driven knob, and the cross knob and the driven knob are driven by gear meshing.

[0013] Furthermore, the control component includes a rotating wheel and connecting rods. The rotating wheel is rotatably disposed inside the control component. Connecting rods are disposed on both sides of the rotating wheel. The connecting rods extend outward from the side grooves and are connected to the bottom of the multi-stage baffles. A motor is disposed inside the waterproof housing. The output shaft of the motor is vertically upward and connected to the bottom end of the rotating wheel's central shaft. The top end of the rotating wheel's central shaft is connected to the central shaft of the turntable.

[0014] Another technical problem to be solved by the present invention is to provide a method for operating an electronic manhole cover based on an electronically controlled limit switch, comprising the following steps:

[0015] Step 1: Place the electronic manhole cover on top of the manhole. When drainage is needed, drain the water through the drain hole. The filter screen will intercept larger foreign objects in the drainage.

[0016] Step 2: When the drainage demand continues to increase, the motor drives the wheel to rotate in the forward direction. The wheel drives the connecting rod to slide in the side groove. The connecting rod pulls the multi-stage baffle to slide in the adjustment rail assembly to open the multi-stage flow control port, thereby increasing the drainage volume through the multi-stage flow control port.

[0017] Step 3: When drainage demand is restored, the motor drives the wheel to rotate in the opposite direction, and the connecting rod pulls the multi-stage baffle to slide and close the multi-stage flow control port in the adjustment rail assembly;

[0018] Step 4: If the multi-stage flow control port cannot be opened electrically, rotate the cross knob to open the first and second sectors, and manually rotate the turntable by holding the handle to drive the wheel to control the opening and closing of the multi-stage flow control port.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. When the drainage demand increases, the present invention controls the number of openings of the multi-stage flow control ports by controlling the sliding of the multi-stage baffles in the adjusting rail assembly through the control component, thereby balancing the drainage demand and ensuring drainage. When there is no need to increase drainage, the multi-stage flow control ports can be closed to prevent foreign objects from entering the well. The opening and closing is more flexible and controllable, preventing excessive water accumulation on the road surface from causing danger and reducing the occurrence of safety hazards.

[0021] 2. The present invention, through the adjustment rail assembly and multi-stage baffles, can remotely control the opening or closing of multi-stage flow control outlets based on real-time monitoring of road water accumulation, thereby improving drainage efficiency and effectively reducing safety hazards caused by water accumulation. Simultaneously, the remote electronic control system enables remote monitoring and operation of the adjustment rail assembly and multi-stage baffles, facilitating maintenance and management of the drainage outlets by staff. It also allows for precise control of drainage volume, avoiding water waste. When increased drainage volume is required, the number of multi-stage flow control outlets opened can be electronically controlled, reducing the impact on the surrounding environment and minimizing noise and odor. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the shaft of the present invention;

[0025] Figure 4 This is a schematic diagram of the top surface of the electronic manhole cover body of the present invention;

[0026] Figure 5 This is a schematic diagram of the bottom surface of the electronic manhole cover body of the present invention;

[0027] Figure 6 This is a schematic diagram of the adjusting rail assembly structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the multi-stage baffle structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the manual component structure of the present invention;

[0030] Figure 9 This is a schematic cross-sectional view of the electronic manhole cover body of the present invention.

[0031] In the diagram: 1. Electronic manhole cover body; 101. Drain hole; 102. Manual assembly; 1021. Turntable; 1022. Pull handle; 1023. First sector; 1024. Second sector; 1025. Cross knob; 1026. Driven knob; 103. Multi-stage flow control port; 104. Reinforcing rib; 105. Adjustment rail assembly; 1051. First slide rail; 1052. Second slide rail; 1053. Third slide rail; 1054. Drain hole; 105 5. Slide rail; 106. Control components; 1061. Rotary wheel; 1062. Connecting rod; 107. Waterproof housing; 1071. Motor; 108. Side groove; 109. Multi-stage baffle; 1091. First baffle; 1092. Second baffle; 1093. Third baffle; 1094. Sliding end; 1095. Sliding arc groove; 1096. Connecting end; 2. Shaft; 3. Shaft base; 4. Filter screen; 5. Mounting ring; 6. Fixing buckle; 7. Limit switch. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To address the technical challenges of existing manhole covers that rely solely on gravity for drainage (leading to low efficiency and potential safety hazards), and the inability of people to promptly detect the open or closed status of manhole covers due to flooding, which increases the risk of accidents, please refer to [link to relevant documentation]. Figure 1-9 The present invention provides the following technical solutions:

[0034] An electronic manhole cover based on an electrically controlled limit switch includes an electronic manhole cover body 1, a manhole passage 2, and a manhole base 3. The electronic manhole cover body 1 is detachably mounted on the top of the manhole passage 2. The manhole base 3 is mounted on the bottom of the manhole passage 2. A limit switch 7 is mounted at the manhole opening of the manhole passage 2. A fixing buckle 6 is mounted on the inner wall of the manhole passage 2. A filter screen 4 is mounted inside the manhole passage 2. An installation ring 5 is mounted on the top of the filter screen 4. The installation ring 5 is bolted to the fixing buckle 6.

[0035] In this embodiment, drainage holes 101 are provided on both sides of the top surface of the electronic manhole cover body 1. A manual component 102 is provided in the middle of the top surface of the electronic manhole cover body 1. A multi-stage flow control port 103 is provided between the drainage holes 101 and the manual component 102. A reinforcing rib 104 is provided on the bottom surface of the electronic manhole cover body 1. A control component 106 is provided in the middle of the bottom surface of the electronic manhole cover body 1. A waterproof housing 107 is provided at the bottom of the control component 106. Adjustment rail components 105 are provided on both sides of the control component 106 on the bottom surface of the electronic manhole cover body 1. Side grooves 108 are provided on both sides of the control component 106. A multi-stage baffle 109 is slidably provided inside the adjustment rail component 105. The multi-stage flow control ports 103 are arranged in groups of three. A group of multi-stage flow control ports 103 is provided on both sides of the top surface of the electronic manhole cover body 1. The multi-stage flow control ports 103 are generally arc-shaped. In daily drainage work, normal drainage is carried out through the drain hole 101. When the drainage demand increases, the multi-stage baffle 109 is driven by the control component 106 to slide in the adjustment rail component 105 to control the number of opening multi-stage flow control ports 103, balance the drainage demand, and ensure drainage. When there is no need to increase drainage, the multi-stage flow control ports 103 can be closed to prevent foreign objects from entering the well.

[0036] In this embodiment, the adjusting rail assembly 105 includes a first slide rail 1051, a second slide rail 1052, and a third slide rail 1053. A multi-stage baffle 109 is slidably disposed within the first slide rail 1051, the second slide rail 1052, and the third slide rail 1053. The first slide rail 1051, the second slide rail 1052, and the third slide rail 1053 are all arc-shaped. The first slide rail 1051 is disposed on the side away from the control component 106, the third slide rail 1053 is disposed on the side closer to the control component 106, and the second slide rail 1052 is disposed between the first slide rail 1051 and the third slide rail 1053. Between the three slide rails 1051, 1052, and 1053, drainage holes 1054 are provided. The positions and sizes of the three drainage holes 1054 are matched with the multi-stage flow control port 103. A slide rail 1055 is provided inside the third slide rail 1053, and the slide rail 1055 is connected to the drainage holes 1054 inside the third slide rail 1053. The multi-stage baffle 109 includes a first baffle 1091, a second baffle 1092, and a third baffle 1093. The first baffle 1091 is slidably disposed inside the first slide rail 1051, and the second baffle 1092 is slidably disposed inside the first slide rail 1051. The third baffle 1093 is slidably disposed inside the second slide rail 1052. Sliding arc grooves 1095 are formed on the inner sides of both the first baffle 1091 and the second baffle 1092. Sliding ends 1094 are formed on the outer sides of both the second baffle 1092 and the third baffle 1093, and are slidably disposed inside the sliding arc grooves 1095. A connecting end 1096 is formed at the bottom of the third baffle 1093, passing through the sliding arc groove 1095 and connecting to the control component 106. This connection is achieved through the adjusting rail assembly 105 and multiple... The multi-stage baffle 109 can be remotely controlled to open or close the multi-stage flow control outlet 103 based on real-time monitoring of road water accumulation, thereby improving drainage efficiency and effectively reducing safety hazards caused by water accumulation. At the same time, remote monitoring and operation can be achieved by controlling the regulating rail assembly 105 and the multi-stage baffle 109 through a remote electronic control system, which facilitates the maintenance and management of the drainage outlet by staff. It can also accurately control the drainage volume to avoid water waste. When it is necessary to increase the drainage volume, the number of multi-stage flow control outlets 103 that are opened can be controlled electronically, which can reduce the impact on the surrounding environment and reduce noise and odor.

[0037] In this embodiment, the manual component 102 includes a turntable 1021, a handle 1022, a first sector 1023, a second sector 1024, a cross knob 1025, and a driven knob 1026. The turntable 1021 is rotatably disposed inside the manual component 102. The central axis of the turntable 1021 is connected to the control component 106. The handles 1022 are disposed on both sides of the turntable 1021. The top of the turntable 1021 is provided with the first sector 1023 and the second sector 1024. A cross knob 1025 is disposed at one end of the first sector 1023, and a driven knob 1026 is disposed at one end of the second sector 1024. The bottoms of the cross knob 1025 and the driven knob 1026 are rotatably connected to the electronic manhole cover body 1. Both the central shaft of knob 1025 and the central shaft of driven knob 1026 are equipped with gear teeth. The cross knob 1025 and driven knob 1026 are driven by gear teeth meshing. When the multi-stage flow control port 103 fails to be opened electrically, the first sector 1023 and the second sector 1024 can be opened by turning the cross knob 1025. Then, by manually rotating the turntable 1021, the rotating wheel 1061 can be driven to control the multi-stage baffle 109 to open the multi-stage flow control port 103. Thus, in the event of a malfunction, the multi-stage flow control port 103 can be opened without removing the electronic manhole cover body 1, making the process more convenient. It can be disassembled and maintained when the drainage demand is restored to normal, without delaying the normal flow control and drainage function in the event of a malfunction, ensuring that the manhole cover is not affected in the drainage work.

[0038] In this embodiment, the control component 106 includes a rotating wheel 1061 and connecting rods 1062. The rotating wheel 1061 is rotatably disposed inside the control component 106. Connecting rods 1062 are disposed on both sides of the rotating wheel 1061. The connecting rods 1062 extend outward from the side groove 108 and are connected to the bottom of the multi-stage baffle 109. A motor 1071 is disposed inside the waterproof housing 107. The output shaft of the motor 1071 is vertically upward and connected to the bottom end of the central rotating shaft of the rotating wheel 1061. The top end of the central rotating shaft of the rotating wheel 1061 is connected to the central rotating shaft of the turntable 1021. When the drainage demand continues to increase, the rotating wheel 1061 can be rotated by the operation of the motor 1071, which can control the multi-stage baffle 109 to open the multi-stage flow control port 103. This allows for effective remote control of the drainage volume, making the opening and closing more flexible and controllable, preventing excessive water accumulation on the road surface from causing danger, and reducing the occurrence of safety hazards.

[0039] To better demonstrate the electronic manhole cover based on electronically controlled limit switch control, this embodiment proposes a method for electronic manhole cover control based on electronically controlled limit switch control, including the following steps:

[0040] The electronic manhole cover body 1 is placed on top of the manhole 2. When drainage is needed, it drains through the drain hole 101, and the filter screen 4 intercepts larger foreign objects in the drainage. When the drainage demand continues to increase, the motor 1071 drives the rotating wheel 1061 to rotate forward. The rotating wheel 1061 drives the connecting rod 1062 to slide in the side groove 108. The connecting rod 1062 pulls the multi-stage baffle 109 to slide in the adjusting rail assembly 105 to open the multi-stage flow control port 103. Increase drainage volume; when drainage demand is restored, the motor 1071 drives the wheel 1061 to rotate in the opposite direction, and the connecting rod 1062 pulls the multi-stage baffle 109 to slide and close the multi-stage flow control port 103 in the adjustment rail assembly 105; when the multi-stage flow control port 103 cannot be opened electrically, rotate the cross knob 1025 to open the first sector 1023 and the second sector 1024, and hold the handle 1022 to manually rotate the turntable 1021, which drives the wheel 1061 to control the opening and closing of the multi-stage flow control port 103.

[0041] Working principle: When drainage demand continues to increase, motor 1071 drives wheel 1061 to rotate forward. Wheel 1061 drives connecting rod 1062 to slide within side groove 108. Connecting rod 1062 pulls third baffle 1093 to slide within third slide rail 1053. When the sliding end 1094 of third baffle 1093 slides to the end of sliding arc groove 1095 on second baffle 1092, it will drive second baffle 1092 to slide inside second slide rail 1052. Similarly, second baffle 1092 can be used to drive first baffle 1091 to move, thereby controlling the opening and closing of multi-stage flow control ports 103 and the number of openings and closings. The system controls the flow rate and adjusts the drainage volume. If the motor 1071 operates in reverse, it will cause the multi-stage flow control port 103 to close. If the multi-stage flow control port 103 cannot be opened electrically, the cross knob 1025 can be rotated with a screwdriver. When the cross knob 1025 rotates, it drives the driven knob 1026 to rotate in the opposite direction through the gear teeth. This drives the opening and closing of the first sector 1023 and the second sector 1024 through the cross knob 1025. After the first sector 1023 and the second sector 1024 are opened, rotating the turntable 1021 can drive the rotating wheel 1061. If the electric control fails, the multi-stage baffle 109 can be manually controlled to open the multi-stage flow control port 103.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An electronic manhole cover based on an electrically controlled limit switch, comprising an electronic manhole cover body (1), a manhole passage (2), and a manhole base (3), characterized in that: The electronic manhole cover body (1) is detachably mounted on the top of the manhole (2). A manhole seat (3) is mounted on the bottom of the manhole (2). A limit switch (7) is mounted at the manhole opening of the manhole (2). A fixing buckle (6) is mounted on the inner wall of the manhole (2). A filter screen (4) is mounted inside the manhole (2). An installation ring (5) is mounted on the top of the filter screen (4). The installation ring (5) is bolted to the fixing buckle (6). A control component (106) is mounted in the middle of the bottom surface of the electronic manhole cover body (1). A waterproof housing (107) is mounted on the bottom of the control component (106). Adjustment rail components (105) are mounted on both sides of the control component (106) on the bottom surface of the electronic manhole cover body (1). Side grooves (108) are provided on both sides of the component (106). The adjustment rail assembly (105) is internally equipped with multi-level baffles (109). The adjustment rail assembly (105) includes a first slide rail (1051), a second slide rail (1052), and a third slide rail (1053). The multi-level baffles (109) are slidably disposed in the first slide rail (1051), the second slide rail (1052), and the third slide rail (1053). The first slide rail (1051), the second slide rail (1052), and the third slide rail (1053) are all arc-shaped. The first slide rail (1051) is disposed on the side away from the control component (106), and the third slide rail (1053) is disposed close to the control component (106). On one side, a second slide rail (1052) is disposed between the first slide rail (1051) and the third slide rail (1053). Drainage holes (1054) are provided on the first slide rail (1051), the second slide rail (1052), and the third slide rail (1053). The positions and sizes of the three drainage holes (1054) are matched with the multi-stage flow control port (103). A slide rail (1055) is provided inside the third slide rail (1053), and the slide rail (1055) is connected to the drainage holes (1054) inside the third slide rail (1053). The multi-stage baffle (109) includes a first baffle (1091), a second baffle (1092), and a third baffle (1093). The first baffle (1091)... 1) The first slide rail (1051) is slidably disposed inside the second slide rail (1052), the second baffle (1092) is slidably disposed inside the second slide rail (1052), the third baffle (1093) is slidably disposed inside the third slide rail (1053), the inner sides of the first baffle (1091) and the second baffle (1092) are provided with sliding arc grooves (1095), the outer sides of the second baffle (1092) and the third baffle (1093) are provided with sliding ends (1094), the sliding ends (1094) are slidably disposed inside the sliding arc grooves (1095), the bottom of the third baffle (1093) is provided with a connecting end (1096), and the connecting end (1096) is connected to the control component (106).

2. The electronic manhole cover based on electronically controlled limit switch as described in claim 1, characterized in that: The electronic manhole cover body (1) has drainage holes (101) on both sides of the top surface, a manual component (102) is provided in the middle of the top surface of the electronic manhole cover body (1), a multi-stage flow control port (103) is provided between the drainage hole (101) and the manual component (102), and a reinforcing rib (104) is provided on the bottom surface of the electronic manhole cover body (1).

3. An electronic manhole cover based on electronically controlled limit switch as described in claim 2, characterized in that: The multi-level flow control ports (103) are arranged in groups of three. A group of multi-level flow control ports (103) is provided on both sides of the top surface of the electronic manhole cover body (1). The multi-level flow control ports (103) are arranged in an arc shape.

4. An electronic manhole cover based on electronically controlled limit switch as described in claim 3, characterized in that: The manual component (102) includes a turntable (1021), a handle (1022), a first fan (1023), a second fan (1024), a cross knob (1025), and a driven knob (1026). The turntable (1021) is rotatably disposed inside the manual component (102). The central axis of the turntable (1021) is connected to the control component (106). Handles (1022) are provided on both sides of the turntable (1021), and the first fan (1023) and the second fan (1024) are provided on the top of the turntable (1021). Two fan-shaped surfaces (1024), one end of the first fan-shaped surface (1023) is provided with a cross knob (1025), and one end of the second fan-shaped surface (1024) is provided with a driven knob (1026). The bottom of both the cross knob (1025) and the driven knob (1026) can be rotatably connected to the electronic manhole cover body (1). The central shaft of the cross knob (1025) and the central shaft of the driven knob (1026) are both provided with gear teeth, and the cross knob (1025) and the driven knob (1026) are driven by gear teeth meshing.

5. An electronic manhole cover based on electronically controlled limit switch as described in claim 4, characterized in that: The control component (106) includes a rotating wheel (1061) and a connecting rod (1062). The rotating wheel (1061) is rotatably disposed inside the control component (106). The connecting rod (1062) is disposed on both sides of the rotating wheel (1061). The connecting rod (1062) extends outward from the side groove (108) and is connected to the bottom of the multi-stage baffle (109). A motor (1071) is disposed inside the waterproof housing (107). The output shaft of the motor (1071) is vertically upward and connected to the bottom end of the central rotating shaft of the rotating wheel (1061). The top end of the central rotating shaft of the rotating wheel (1061) is connected to the central rotating shaft of the turntable (1021).

6. A method for operating an electronic manhole cover based on an electrically controlled limit switch according to claim 5, characterized in that: Includes the following steps: Step 1: Place the electronic manhole cover body (1) on top of the manhole (2). When drainage is required, drain water through the drain hole (101). The filter screen (4) intercepts larger foreign objects in the drainage. Step 2: When the drainage demand continues to increase, the motor (1071) drives the rotating wheel (1061) to rotate in the forward direction. The rotating wheel (1061) drives the connecting rod (1062) to slide in the side groove (108). The connecting rod (1062) pulls the multi-stage baffle (109) to slide in the adjustment rail assembly (105) to open the multi-stage flow control port (103), thereby increasing the drainage volume through the multi-stage flow control port (103). Step 3: When the drainage demand is restored, the motor (1071) drives the wheel (1061) to rotate in the opposite direction, and the connecting rod (1062) pulls the multi-stage baffle (109) to slide and close the multi-stage flow control port (103) in the adjustment rail assembly (105). Step 4: If the multi-stage flow control port (103) cannot be opened electrically, rotate the cross knob (1025) to open the first sector (1023) and the second sector (1024), hold the handle (1022) and manually rotate the turntable (1021) to drive the wheel (1061) to control the opening and closing of the multi-stage flow control port (103).

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