Urban flood disaster monitoring and early warning device

Abstract

This invention relates to the field of flood disaster monitoring and early warning technology, and provides an urban flood disaster monitoring and early warning device, including a detection box. A water wading sensor is installed at the bottom of the detection box, and a water inlet is provided on the side wall of the detection box. The device also includes an annular shielding plate, a battery, and a baffle. A drain outlet is located near the lower end of the side wall of the detection box, and a filter screen is installed on the drain outlet. A guide groove is provided on the side wall of the detection box at the drain outlet. When the water level rises, the opening and closing assembly drives the baffle to block the drain outlet by ensuring the water depth is above the bottom of the detection box, until the water depth is higher than the upper end of the annular water inlet shell. Rainwater enters the annular water inlet shell and then enters the detection box through the water inlet. After the water wading sensor detects the rainwater, the signal transmission module receives the signal from the water wading sensor and sends it to the mobile phone of the early warning personnel, thus achieving the function of detection and early warning.

Description

Technical Field

[0001] This invention belongs to the field of flood disaster monitoring and early warning technology, and in particular relates to an urban flood disaster monitoring and early warning device. Background Technology

[0002] Flooding is one of the most serious natural disasters in Chinese cities. A flood is a natural phenomenon characterized by high peak flow, large volume, and a rapid rise in water level, while waterlogging is a natural phenomenon caused by prolonged rainfall or torrential rain that cannot be drained into rivers and ditches in time, resulting in surface water accumulation. When floods and waterlogging cause losses to human beings, they become disasters, making flood and waterlogging detection and early warning systems particularly important.

[0003] A device for monitoring and warning water levels during rainstorms and floods, disclosed in CN 217930465 U, describes a water level monitoring and alarm device. When the water level exceeds the connecting ring, water flows through the water pipe into the installation cylinder. The water level monitoring and alarm device feeds back the abnormal water level to the remote monitoring and control terminal and issues an alarm. Simultaneously, as water continues to flow in, a float plate floats upward, driving an electric push rod and a hollow sphere to move upward, opening two movable sealing plates and extending them upward. This causes the hollow sphere to appear red under sunlight. As the float plate floats upward until the squeezing hammer contacts the push-type control switch, the float plate stops moving due to the squeezing hammer. The push-type control switch is then squeezed by the squeezing hammer, driving the electric push rod to continue moving the hollow sphere upward, making it easier for staff or monitoring equipment to observe, thus enhancing the warning effect and achieving alarm from both auditory and visual perspectives.

[0004] While the above methods can serve as detection and early warning systems, they still have the following drawbacks: the monitoring and early warning height cannot be adjusted, making it inconvenient for detection and early warning in various terrains; after the water level drops, the water in the installation cylinder cannot be discharged, thus preventing continued monitoring and early warning; when impurities accumulate on the filter screen and clog it, rainwater cannot enter the connecting ring, thereby causing the detection and early warning function to be lost, posing a safety hazard. Summary of the Invention

[0005] The purpose of this invention is to provide an urban flood disaster monitoring and early warning device, which aims to solve the following problems: the monitoring and early warning height cannot be adjusted, making it inconvenient to detect and warn in various terrains; after the water level drops, the water in the installation cylinder cannot be discharged, thus preventing the continuation of monitoring and early warning; when impurities accumulate on the filter screen and clog the filter screen, rainwater cannot enter the connecting ring, thus causing the detection and early warning function to be lost, posing a safety hazard.

[0006] This invention is implemented as follows: an urban flood disaster monitoring and early warning device includes a detection box, a water immersion sensor is installed at the bottom of the detection box, and a water inlet is provided on the side wall of the detection box; it also includes:

[0007] Circular shielding plate, battery, and baffle;

[0008] A drain outlet is provided on the side wall of the detection box near the lower end. A filter screen is installed on the drain outlet. A guide groove is provided on the side wall of the detection box at the drain outlet. The baffle is slidably connected to the guide groove.

[0009] An annular water inlet shell is installed on the side wall of the testing box. The annular water inlet shell coincides with the water inlet hole. An annular opening is provided at the upper end of the annular water inlet shell. An annular filter screen is installed on the annular water inlet shell at the annular opening.

[0010] The annular baffle is rotatably connected to the side wall of the annular water inlet shell. The lower end of the annular baffle is provided with a protrusion that covers the annular filter screen. Multiple brush heads are installed at the lower end of the annular baffle, and the brush heads are in contact with the annular filter screen.

[0011] It also includes a signal transmission module, which is installed inside the detection box. The signal transmission module is used to receive the water wading sensor signal and send it to the mobile phone of the early warning personnel.

[0012] It also includes a support assembly, which is disposed on the testing box. The support assembly is used to adjust the height of the testing box and to support the testing box.

[0013] It also includes an opening and closing component, which is located at the bottom of the detection box. The opening and closing component drives the baffle to block the drain outlet by submerging the bottom of the detection box in water.

[0014] A buzzer is installed on the top of the testing box, and the battery is placed inside the testing box;

[0015] It also includes a transmission mechanism and a triggering component, which are installed inside the detection box. The transmission mechanism drives the annular shielding disc to rotate through the opening and closing component, and the triggering component controls the connection between the buzzer and the battery by allowing water to enter the detection box.

[0016] In a further technical solution, the support assembly includes a fixing frame, a fixing sleeve, and a fixing shaft;

[0017] The fixing frame is installed on the side wall of the testing box, the fixing sleeve is installed at the bottom of the fixing frame, the fixing shaft is slidably connected to the fixing sleeve, and a stop bolt is threaded onto the fixing sleeve, with the end of the stop bolt abutting against the fixing shaft.

[0018] In a further technical solution, the signal transmission module includes a microcontroller, a communication module, and a support board;

[0019] The support plate is installed inside the detection box near the top. The microcontroller, communication module, and battery are all mounted on the support plate. The microcontroller is electrically connected to the wading sensor, communication module, and battery via circuits.

[0020] In a further technical solution, the opening and closing assembly includes a fixed sleeve, a float plate, a first spring, and a connecting block;

[0021] The fixing sleeve is installed at the bottom of the detection box, the float plate is slidably connected to the inner wall of the fixing sleeve, and the two ends of the first spring are respectively connected to the float plate and the detection box;

[0022] The two ends of the connecting block are respectively connected to the baffle and the floating plate. The fixed sleeve is provided with a clearance groove for avoiding the connecting block. The baffle is slidably connected to the side wall of the fixed sleeve and covers the clearance groove.

[0023] In a further technical solution, the transmission mechanism includes a rack, a rotating shaft, a first gear, and a partition plate;

[0024] The rack is mounted on the upper end of the float plate and extends into the detection box. An annular groove is provided on the inner wall of the annular shielding plate, and an inner toothed ring is installed in the annular groove.

[0025] The rotating shaft is rotatably connected inside the testing box. The first gear is mounted on the rotating shaft and passes through the side wall of the testing box and meshes with the internal gear ring. The partition is installed inside the testing box, and the partition isolates the rack, rotating shaft and first gear from the inner wall of the testing box.

[0026] It also includes a transmission assembly, which is installed inside the testing box. The transmission assembly drives the rotating shaft to rotate by moving the rack up and down.

[0027] In a further technical solution, the transmission assembly includes a first bevel gear, a mounting block, a transmission shaft, a second bevel gear, and a second gear;

[0028] The mounting block is installed at the bottom of the testing box. The drive shaft is rotatably connected to the mounting block. A second bevel gear and a second gear are mounted on the drive shaft. A first bevel gear that meshes with the second bevel gear is mounted on the rotating shaft. The second gear meshes with a rack.

[0029] In a further technical solution, the triggering component includes a guide sleeve, a guide shaft, a first contact piece, a second contact piece, and a floating block;

[0030] The floating block is slidably connected to the inner wall of the detection box, the guide sleeve is fixed on the floating block, the guide sleeve is provided with a guide groove, the guide groove is slidably connected with a guide shaft, and a second spring is provided in the guide groove;

[0031] A first contact is installed at the upper end of the guide shaft, and a second contact is installed at the top inner part of the detection box. The first contact is connected to the anode of the battery through a circuit, and the second contact is connected to the live wire of the buzzer through a circuit. The neutral wire of the buzzer is connected to the cathode of the battery.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] This invention provides an urban flood disaster monitoring and early warning device. A support component adjusts the height of the detection box and supports it, allowing for the pre-setting of the monitoring and early warning water level. A ring-shaped shield blocks rainwater, preventing it from directly entering the ring-shaped inlet shell during rainfall. When the water level rises, an opening and closing component, by submerging the bottom of the detection box, drives a baffle to block the drain outlet until the water depth is higher than the top of the ring-shaped inlet shell. Rainwater then enters the ring-shaped inlet shell and then flows into the detection box through the inlet hole. After the wading sensor detects the rainwater, a signal transmission module receives the wading sensor signal and sends it to... The mobile phone of the personnel in charge of early warning plays a role in detection and early warning. The triggering component controls the buzzer and battery circuit by detecting water entering the detection box, which causes the buzzer to light up and sound, further serving as a detection and early warning function. The transmission mechanism drives the ring shield to rotate through the opening and closing component. The ring shield drives the brush head to move, and the brush head cleans the ring filter screen, thereby preventing the ring filter screen from clogging and improving the efficiency of monitoring and early warning. When the water level drops, the opening and closing component drives the baffle to open the drain port, and the rainwater in the detection box flows out, so that the water sensor can no longer detect the rainwater, and the buzzer stops flashing and sounding. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of an urban flood disaster monitoring and early warning device provided in an embodiment of the present invention;

[0035] Figure 2 Provided for embodiments of the present invention Figure 1 A structural diagram without supporting components;

[0036] Figure 3 Provided for embodiments of the present invention Figure 2 Internal structure diagram;

[0037] Figure 4 Provided for embodiments of the present invention Figure 3 A schematic diagram of the structure with the right-side tilt angle;

[0038] Figure 5 Provided for embodiments of the present invention Figure 3 A magnified structural diagram of A in the middle;

[0039] Figure 6 Provided for embodiments of the present invention Figure 4 A magnified structural diagram of B in the diagram.

[0040] In the attached diagram: Detection box 101, drain port 102, filter screen 103, water inlet 104, annular water inlet shell 105, annular filter screen 106, annular baffle plate 107, brush head 108, wading sensor 109, buzzer 110, guide slide 111, microcontroller 112, communication module 113, support plate 114, battery 115, baffle 116, support assembly 2, fixing frame 201, fixing sleeve 202, fixing shaft 203, stop bolt 204, opening and closing assembly 3, fixing sleeve 301, float Plate 302, first spring 303, connecting block 304, clearance groove 305, transmission mechanism 4, rack 401, rotating shaft 402, annular groove 403, internal gear ring 404, first gear 405, partition plate 406, first bevel gear 501, mounting block 502, transmission shaft 503, second bevel gear 504, second gear 505, trigger assembly 6, guide sleeve 601, guide groove 602, guide shaft 603, second spring 604, first contact piece 605, second contact piece 606, floating block 607. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, an urban flood disaster monitoring and early warning device according to an embodiment of the present invention includes a detection box 101, a water wading sensor 109 is provided at the bottom of the inner side of the detection box 101, and a water inlet 104 is provided on the side wall of the detection box 101. It also includes:

[0044] 107 ring-shaped shield, 115 battery and 116 baffle;

[0045] A drain port 102 is provided on the side wall of the detection box 101 near the lower end. A filter screen 103 is installed on the drain port 102. A guide groove 111 is provided on the side wall of the detection box 101 at the drain port 102. The baffle 116 is slidably connected to the guide groove 111.

[0046] An annular water inlet shell 105 is installed on the side wall of the detection box 101. The annular water inlet shell 105 coincides with the water inlet hole 104. An annular opening is provided at the upper end of the annular water inlet shell 105. An annular filter screen 106 is installed on the annular water inlet shell 105 at the annular opening.

[0047] The annular shielding disc 107 is rotatably connected to the side wall of the annular water inlet shell 105. The lower end of the annular shielding disc 107 is provided with a protrusion that shields the annular filter screen 106. Multiple brush heads 108 are installed at the lower end of the annular shielding disc 107, and the brush heads 108 are in contact with the annular filter screen 106.

[0048] It also includes a signal transmission module, which is installed inside the detection box 101. The signal transmission module is used to receive the signal from the water wading sensor 109 and send it to the mobile phone of the early warning personnel.

[0049] It also includes a support component 2, which is disposed on the detection box 101. The support component 2 is used to adjust the height of the detection box 101 and to support the detection box 101.

[0050] It also includes an opening and closing component 3, which is located at the bottom of the detection box 101. The opening and closing component 3 drives the baffle 116 to block the drain port 102 by the water depth submerging the bottom of the detection box 101.

[0051] A buzzer 110 is installed on the top of the test box 101, and the storage battery 115 is installed inside the test box 101;

[0052] It also includes a transmission mechanism 4 and a triggering component 6, which are installed inside the detection box 101. The transmission mechanism 4 drives the annular shielding plate 107 to rotate through the opening and closing component 3. The triggering component 6 controls the communication between the buzzer 110 and the battery 115 by allowing water to enter the detection box 101.

[0053] In this embodiment of the invention, during use, the support component 2 adjusts the height of the detection box 101 and supports it, thereby enabling the water level for monitoring and early warning to be set in advance. The annular shielding plate 107 blocks rainwater, preventing rainwater from directly entering the annular water inlet shell 105 during rain. When the water level rises, the opening and closing component 3 drives the baffle 116 to block the drain port 102 by submerging the bottom of the detection box 101, until the water depth is higher than the upper end of the annular water inlet shell 105. Rainwater then enters the annular water inlet shell 105 and then enters the detection box 101 through the water inlet hole 104. After the wading sensor 109 detects the rainwater, the signal transmission module receives the signal from the wading sensor 109 and sends it to the mobile phone of the early warning personnel. The triggering component 6 controls the communication between the buzzer 110 and the battery 115 by allowing water to enter the detection box 101, thereby causing the buzzer 110 to light up and sound, further serving as a detection and early warning function. The transmission mechanism 4 drives the annular shielding plate 107 to rotate through the opening and closing component 3. The annular shielding plate 107 drives the brush head 108 to move, and the brush head 108 cleans the annular filter screen 106, thereby preventing the annular filter screen 106 from clogging and improving the efficiency of monitoring and early warning. When the water level drops, the opening and closing component 3 drives the baffle 116 to open the drain port 102, and the rainwater in the detection box 101 flows out, so that the water wading sensor 109 can no longer detect the rainwater, and the buzzer 110 also stops flashing and sounding.

[0054] like Figure 1 As shown, in a preferred embodiment of the present invention, the support assembly 2 includes a fixing frame 201, a fixing sleeve 202, and a fixing shaft 203;

[0055] The fixing frame 201 is installed on the side wall of the testing box 101, the fixing sleeve 202 is installed at the bottom of the fixing frame 201, the fixing shaft 203 is slidably connected to the fixing sleeve 202, and the fixing sleeve 202 is threaded with a stop bolt 204, the end of the stop bolt 204 abutting against the fixing shaft 203.

[0056] In this embodiment of the invention, loosen the stop bolt 204, at which point the lengths of the fixing sleeve 202 and the fixing shaft 203 can be adjusted, then tighten the stop bolt 204, and insert the fixing shaft 203 into the ground.

[0057] like Figure 4 As shown, in a preferred embodiment of the present invention, the signal transmission module includes a microcontroller 112, a communication module 113, and a support plate 114;

[0058] The support plate 114 is installed inside the detection box 101 near the top. The microcontroller 112, the communication module 113 and the battery 115 are all installed on the support plate 114. The microcontroller 112 is electrically connected to the water wading sensor 109, the communication module 113 and the battery 115 through circuits.

[0059] In this embodiment of the invention, the storage battery 115 is used for power supply, and the microcontroller 112 acquires the signal from the wading sensor 109 and sends the signal through the communication module 113.

[0060] like Figures 1-6 As shown, in a preferred embodiment of the present invention, the opening and closing component 3 includes a fixing sleeve 301, a float plate 302, a first spring 303, and a connecting block 304;

[0061] The fixing sleeve 301 is installed at the bottom of the detection box 101, the float plate 302 is slidably connected to the inner wall of the fixing sleeve 301, and the two ends of the first spring 303 are respectively connected to the float plate 302 and the detection box 101.

[0062] The two ends of the connecting block 304 are connected to the baffle 116 and the floating plate 302 respectively. The fixed sleeve 301 is provided with a clearance groove 305 for avoiding the connecting block 304. The baffle 116 is slidably connected to the side wall of the fixed sleeve 301 and covers the clearance groove 305.

[0063] In this embodiment of the invention, when the rainwater submerges the float 302, the float 302 overcomes the elastic force of the first spring 303 through buoyancy and moves upward. The float 302 drives the baffle 116 to move upward through the connecting block 304, and the baffle 116 blocks the drain outlet 102. When the rainwater is below the float 302, the first spring 303 pushes the float 302 downward. The float 302 drives the baffle 116 to move downward through the connecting block 304, and the baffle 116 opens the drain outlet 102.

[0064] like Figure 3 , Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, the transmission mechanism 4 includes a rack 401, a rotating shaft 402, a first gear 405, and a partition 406;

[0065] The rack 401 is installed on the upper end of the float 302 and extends into the detection box 101. The inner wall of the annular shielding plate 107 is provided with an annular groove 403, and an inner toothed ring 404 is installed in the annular groove 403.

[0066] The rotating shaft 402 is rotatably connected inside the detection box 101. The first gear 405 is mounted on the rotating shaft 402 and passes through the side wall of the detection box 101 and meshes with the internal gear ring 404. The partition 406 is installed inside the detection box 101 and isolates the rack 401, the rotating shaft 402 and the first gear 405 from the inner wall of the detection box 101.

[0067] It also includes a transmission assembly, which is installed inside the detection box 101. The transmission assembly drives the rotating shaft 402 to rotate by moving the rack 401 up and down.

[0068] The transmission assembly includes a first bevel gear 501, a mounting block 502, a transmission shaft 503, a second bevel gear 504, and a second gear 505.

[0069] The mounting block 502 is installed at the bottom of the detection box 101. The transmission shaft 503 is rotatably connected to the mounting block 502. A second bevel gear 504 and a second gear 505 are mounted on the transmission shaft 503. A first bevel gear 501 that meshes with the second bevel gear 504 is mounted on the rotating shaft 402. The second gear 505 meshes with the rack 401.

[0070] In this embodiment of the invention, when the float 302 drives the rack 401 to move upward, the rack 401 drives the second gear 505 to rotate, the second gear 505 drives the transmission shaft 503 to rotate, the transmission shaft 503 drives the second bevel gear 504 to rotate, the second bevel gear 504 drives the first bevel gear 501 to rotate, the first bevel gear 501 drives the rotating shaft 402 to rotate, the rotating shaft 402 drives the first gear 405 to rotate, the first gear 405 drives the inner gear ring 404 to rotate, and the inner gear ring 404 drives the annular shielding disk 107 to rotate.

[0071] like Figure 3 and Figure 4 As shown, in a preferred embodiment of the present invention, the triggering component 6 includes a guide sleeve 601, a guide shaft 603, a first contact piece 605, a second contact piece 606, and a floating block 607.

[0072] The floating block 607 is slidably connected to the inner wall of the detection box 101, the guide sleeve 601 is fixed on the floating block 607, the guide sleeve 601 is provided with a guide groove 602, the guide groove 602 is slidably connected with a guide shaft 603, and a second spring 604 is provided in the guide groove 602.

[0073] A first contact 605 is installed at the upper end of the guide shaft 603, and a second contact 606 is installed at the inner top of the detection box 101. The first contact 605 is connected to the anode of the storage battery 115 through a circuit, and the second contact 606 is connected to the live wire of the buzzer 110 through a circuit. The neutral wire of the buzzer 110 is connected to the cathode of the storage battery 115.

[0074] In this embodiment of the invention, after rainwater enters the detection box 101, the floating block 607 moves upward by buoyancy. The floating block 607 drives the guide sleeve 601 to move upward. The guide sleeve 601 drives the guide shaft 603 to move upward by the elastic force of the second spring 604. The guide shaft 603 drives the first contact piece 605 to move upward. The first contact piece 605 and the second contact piece 606 are in contact. At this time, the buzzer 110 and the battery 115 form a passage, and the buzzer 110 starts to flash and buzz.

[0075] The above embodiments of the present invention provide an urban flood disaster monitoring and early warning device. In use, loosening the stop bolt 204 allows adjustment of the lengths of the fixing sleeve 202 and the fixing shaft 203. Then, tightening the stop bolt 204 and inserting the fixing shaft 203 into the ground allows for advance setting of the monitoring and early warning water level. The annular shielding plate 107 blocks rainwater, preventing it from directly entering the annular water inlet shell 105 during rainfall. When the water level rises and the rainwater submerges the float plate 302, the float plate 302 overcomes the elastic force of the first spring 303 through buoyancy and moves upwards. The float plate 302 is driven by the connecting block 304. Baffle 116 moves upward, blocking drain outlet 102 until the water depth is higher than the upper end of annular inlet shell 105. Rainwater enters annular inlet shell 105 and then enters detection box 101 through inlet hole 104. After wading sensor 109 detects rainwater, microcontroller 112 acquires the signal from wading sensor 109 and sends it through communication module 113 to the mobile phone of the warning personnel, thus playing a detection and warning role. After rainwater enters detection box 101, floating block 607 moves upward by buoyancy. Floating block 607 drives guide sleeve 601 to move upward. Guide sleeve 601 passes through the second spring... The spring force of spring 604 drives guide shaft 603 to move upward, guide shaft 603 drives first contact piece 605 to move upward, first contact piece 605 and second contact piece 606 are in contact, at this time the buzzer 110 and battery 115 form a circuit, the buzzer 110 starts to flash and buzz, further playing the role of detection and warning, and when float plate 302 drives rack 401 to move upward, rack 401 drives second gear 505 to rotate, second gear 505 drives transmission shaft 503 to rotate, transmission shaft 503 drives second bevel gear 504 to rotate, second bevel gear 504 drives first bevel gear 501 to rotate, first bevel gear Wheel 501 drives rotating shaft 402 to rotate, rotating shaft 402 drives first gear 405 to rotate, first gear 405 drives internal gear ring 404 to rotate, internal gear ring 404 drives annular shielding disc 107 to rotate, annular shielding disc 107 drives brush head 108 to move, brush head 108 cleans annular filter screen 106, thereby preventing annular filter screen 106 from clogging and improving monitoring and early warning efficiency. When the water level drops, opening and closing component 3 drives baffle 116 to open drain port 102, rainwater flows out of detection box 101, thus making water wading sensor 109 unable to detect rainwater, and buzzer 110 also stops flashing and beeping.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A monitoring and early warning device for urban flooding disasters, comprising a detection box (101), wherein a water wading sensor (109) is provided at the bottom of the inner side of the detection box (101), and a water inlet (104) is provided on the side wall of the detection box (101), characterized in that... It also includes: Annular shielding plate (107), battery (115), and baffle (116); A drain port (102) is provided on the side wall of the detection box (101) near the lower end. A filter screen (103) is installed on the drain port (102). A guide groove (111) is provided on the side wall of the detection box (101) at the drain port (102). The baffle (116) is slidably connected to the guide groove (111). An annular water inlet shell (105) is installed on the side wall of the testing box (101). The annular water inlet shell (105) coincides with the water inlet hole (104). An annular opening is provided at the upper end of the annular water inlet shell (105). An annular filter screen (106) is installed on the annular water inlet shell (105) at the annular opening. The annular baffle plate (107) is rotatably connected to the side wall of the annular water inlet shell (105). The lower end of the annular baffle plate (107) is provided with a protrusion to block the annular filter screen (106). Multiple brush heads (108) are installed at the lower end of the annular baffle plate (107), and the brush heads (108) are in contact with the annular filter screen (106). It also includes a signal transmission module, which is installed inside the detection box (101). The signal transmission module is used to receive the signal from the wading sensor (109) and send it to the mobile phone of the early warning personnel. It also includes a support assembly (2) disposed on the detection box (101), the support assembly (2) being used to adjust the height of the detection box (101) and to support the detection box (101); It also includes an opening and closing component (3), which is located at the bottom of the detection box (101). The opening and closing component (3) drives the baffle (116) to block the drain port (102) by the water depth submerging the bottom of the detection box (101). A buzzer (110) is installed on the top of the test box (101), and the battery (115) is installed inside the test box (101); It also includes a transmission mechanism (4) and a trigger assembly (6), which are installed inside the detection box (101). The transmission mechanism (4) drives the annular shielding plate (107) to rotate through the opening and closing assembly (3). The trigger assembly (6) controls the communication between the buzzer (110) and the battery (115) by allowing water to enter the detection box (101). The opening and closing assembly (3) includes a fixed sleeve (301), a float plate (302), a first spring (303), and a connecting block (304). The fixed sleeve (301) is installed at the bottom of the detection box (101), the float plate (302) is slidably connected to the inner wall of the fixed sleeve (301), and the two ends of the first spring (303) are respectively connected to the float plate (302) and the detection box (101). The two ends of the connecting block (304) are respectively connected to the baffle (116) and the float plate (302). The fixed sleeve (301) is provided with a clearance groove (305) for avoiding the connecting block (304), and the baffle (116) is slidably connected to the side wall of the fixed sleeve (301) and covers the clearance groove (305). The transmission mechanism (4) includes a rack (401), a rotating shaft (402), a first gear (405), and a partition (406); the rack (401) is installed on the upper end of the float (302) and extends into the detection box (101); an annular groove (403) is provided on the inner wall of the annular shield (107), and an internal gear ring (404) is installed in the annular groove (403); the rotating shaft (402) is rotatably connected to the detection box (101); the first gear (405) is installed on the rotating shaft (402), and the first gear (405) passes through the side wall of the detection box (101) and meshes with the internal gear ring (404); the partition (406) is installed in the detection box (101), and the partition (406) and the inner wall of the detection box (101) isolate the rack (401), the rotating shaft (402), and the first gear (405); It also includes a transmission assembly, which is installed inside the detection box (101). The transmission assembly drives the rotating shaft (402) to rotate by moving the rack (401) up and down. The transmission assembly includes a first bevel gear (501), a mounting block (502), a transmission shaft (503), a second bevel gear (504), and a second gear (505). The mounting block (502) is installed at the bottom of the detection box (101). The transmission shaft (503) is rotatably connected to the mounting block (502). The second bevel gear (504) and the second gear (505) are mounted on the transmission shaft (503). The first bevel gear (501) meshes with the second bevel gear (504) on the rotating shaft (402). The second gear (505) meshes with the rack (401).

2. The urban flood disaster monitoring and early warning device according to claim 1, characterized in that... The support assembly (2) includes a fixing frame (201), a fixing sleeve (202), and a fixing shaft (203); The fixing frame (201) is installed on the side wall of the testing box (101), the fixing sleeve (202) is installed on the bottom of the fixing frame (201), the fixing shaft (203) is slidably connected to the fixing sleeve (202), and a stop bolt (204) is threaded on the fixing sleeve (202), with the end of the stop bolt (204) abutting against the fixing shaft (203).

3. The urban flood disaster monitoring and early warning device according to claim 1, characterized in that... The signal transmission module includes a microcontroller (112), a communication module (113), and a support plate (114); The support plate (114) is installed inside the detection box (101) near the top. The microcontroller (112), communication module (113) and battery (115) are all installed on the support plate (114). The microcontroller (112) is electrically connected to the water wading sensor (109), communication module (113) and battery (115) respectively through lines.

4. The urban flood disaster monitoring and early warning device according to claim 1, characterized in that... The triggering component (6) includes a guide sleeve (601), a guide shaft (603), a first contact piece (605), a second contact piece (606), and a floating block (607); The floating block (607) is slidably connected to the inner wall of the detection box (101), the guide sleeve (601) is fixed on the floating block (607), the guide sleeve (601) is provided with a guide groove (602), a guide shaft (603) is slidably connected to the guide groove (602), and a second spring (604) is provided in the guide groove (602). The upper end of the guide shaft (603) is equipped with a first contact piece (605), and the inner top of the detection box (101) is equipped with a second contact piece (606). The first contact piece (605) is connected to the anode of the storage battery (115) through a line, and the second contact piece (606) is connected to the live wire of the buzzer (110) through a line. The neutral wire of the buzzer (110) is connected to the cathode of the storage battery (115).

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