A pedestrian safety warning device for urban waterlogging roads

Abstract

The present invention relates to the technical field of warning devices, and discloses a pedestrian safety warning device for urban waterlogging roads, which includes a base and a housing fixed on the base. An installation plate is provided above the housing. One end of the installation plate is provided with a loading plate. The installation plate is provided with a positioning component for fixing the position of the loading plate. Connecting plates hinged to the outside of the installation plate are fixed on both sides of the end of the loading plate close to the installation plate. A display screen is fixed to the bottom of the loading plate. One end of the display screen is provided with a buzzer fixed to the bottom of the loading plate. A laser rangefinder is fixed to the inner wall of the top of the housing. The present invention can measure the water depth on urban roads, and can reduce the interference of external factors on the measurement results. When the water depth exceeds the warning line, it can give warnings to passing pedestrians, and can display the data of the water depth circumferentially, so as to facilitate pedestrians to observe, and has high working performance.

Description

Technical Field

[0001] The present invention relates to the technical field of warning devices, and in particular to a pedestrian safety warning device for urban waterlogging on roads. Background Art

[0002] Urban waterlogging refers to the phenomenon that heavy precipitation or continuous precipitation exceeds the urban drainage capacity, resulting in waterlogging disasters in the city. When urban waterlogging occurs, the water accumulation is particularly serious in the areas with lower levels inside the city. Therefore, corresponding warning devices need to be set up to warn passing pedestrians to avoid pedestrians losing their balance and falling in areas with severe water accumulation, resulting in pedestrian injuries.

[0003] In the prior art, a patent document with the application number CN201720232109.7 and the authorization announcement date of October 3, 2017 discloses a pedestrian safety warning device for urban waterlogging on roads, which includes a support. A support rod is provided on the support. The support rod includes a vertical rod and a horizontal rod. One end of the vertical rod is connected to the support, and the other end is connected to the horizontal rod. A Doppler flow velocity meter and a laser rangefinder are connected to the horizontal rod. The Doppler flow velocity meter and the laser rangefinder are connected to a single-chip microcomputer. The output end of the single-chip microcomputer is connected to a display device. The display device is installed on the horizontal rod. The single-chip microcomputer and the wireless transmission device are installed in an assembly box, and the single-chip microcomputer transmits signals to the control center through the wireless transmission device. The assembly box is installed on the vertical rod.

[0004] Although this warning device can measure the depth of water accumulation on the road surface through the laser rangefinder to achieve warning of passing pedestrians, during the use process, since the laser rangefinder directly measures the water surface, there will be a large error during the ranging process. During this process, the wrong data will bring great misleading to passing pedestrians, resulting in pedestrians blindly passing through sections with deeper water accumulation, posing a great safety hazard. For this reason, we propose a pedestrian safety warning device for urban waterlogging on roads. Summary of the Invention

[0005] To solve the technical problem of poor measurement accuracy of existing warning devices, the present invention provides a pedestrian safety warning device for urban waterlogging on roads.

[0006] The present invention is implemented by the following technical solutions: A pedestrian safety warning device for urban waterlogging roads, including a base and a housing fixed on the base. Above the housing, there is a mounting plate. One end of the mounting plate is provided with a loading plate. The mounting plate is provided with a positioning component for fixing the position of the loading plate. On both sides of the end of the loading plate close to the mounting plate, there are connecting plates hinged outside the mounting plate. The bottom of the loading plate is fixed with a display screen. One end of the display screen is provided with a buzzer fixed to the bottom of the loading plate. The inner wall of the top of the housing is fixed with a laser rangefinder. Inside the housing, there is a floating block slidably connected to the output end of the laser rangefinder. On one side of the bottom of the housing, there is a water inlet. When urban waterlogging occurs, the accumulated water on the urban road will enter the inside of the housing through the water inlet. As the accumulated water enters, the floating block will float on the water surface of the accumulated water. At this time, through the operation of the laser rangefinder, the corresponding height of the floating block can be detected. When the floating block floats to a relatively high height, the laser rangefinder will transmit a signal to the display screen, and the depth of the accumulated water at this location will be displayed through the display screen. When the depth exceeds the warning line, the buzzer will sound an alarm to warn the passing pedestrians. And by measuring the floating block, the error can be reduced, thus avoiding the measurement error caused by the laser rangefinder directly measuring the water surface. And through the protection of the housing, the interference from the outside to the floating block can be reduced, thereby effectively improving the measurement accuracy.

[0007] As a further improvement of the above solution, inside the housing, there are a plurality of support blocks fixed on the base. The bottom of the floating block abuts against the support blocks, and the floating block can be supported by the support blocks.

[0008] As a further improvement of the above solution, a connecting column fixed to the mounting plate is rotatably connected to the top of the housing. A connecting gear is fixedly sleeved on the outer wall of the connecting column. A support plate fixed to the base is provided on one side of the housing. An installation shell is fixed to the top of the support plate. A first motor is fixed inside the installation shell. The output end of the first motor is drivingly connected to a drive shaft whose other end is rotatably connected to the base. A drive gear meshing with the connecting gear is fixedly sleeved on the outer wall of the drive shaft. A filter screen is slidably connected inside the water inlet. Slide holes are opened at both ends of the filter screen. A lead screw is slidably inserted through the slide holes. The end of the lead screw inside the housing is fixed to the adjacent support block. A pushing spring is sleeved outside the lead screw inside the housing. A limiting sleeve with a diameter larger than the aperture of the slide hole is threadedly sleeved on the end of the lead screw outside the housing. A plurality of cams in contact with the filter screen are fixedly sleeved on the outer wall of the drive shaft. Through the cooperative work of the above components, the data of the accumulated water depth can be displayed circumferentially, facilitating pedestrians to observe. Moreover, the sundries in the accumulated water can be blocked, preventing the sundries mixed in the accumulated water from entering the device and causing blockage. Additionally, the sundries blocking component can be dredged to make the height of the accumulated water inside the device flush with the height of the external accumulated water, thereby improving the measurement progress of the device. And the blocking component can be adaptively adjusted according to the usage requirements of the staff.

[0009] As a further improvement of the above solution, the positioning component includes a loading box fixed to the top side of the mounting plate. A second motor is fixed to the inner wall of one end of the loading box. The output end of the second motor is drivingly connected to a winding shaft whose other end is rotatably connected to the inner wall of the other end of the loading box. Ropes are fixedly wound around both ends of the winding shaft. The tail ends of the ropes extend outside the loading box and are fixed to the movable end of the mounting plate. A storage opening slidably matched with the display screen is opened at the top of the housing near the display screen. A closing plate for closing the storage opening is slidably connected inside the housing. A push plate in contact with the closing plate is hinged to the inner wall of the housing. The push plate is arranged in a staggered manner with the laser rangefinder. A plurality of return springs fixed to the inner wall of the housing are fixed to the push plate. A sliding groove is opened on one side of the loading plate close to the display screen. A sliding block is slidably connected inside the sliding groove. A connecting rope is fixed to the sliding block. The tail end of the connecting rope extends into the housing and is fixed to a pressing block arranged in a staggered manner with the laser rangefinder. Through the operation of the positioning component, the idle device can be stored and protected, preventing the device from being exposed to the outside for a long time during idleness and causing aging, thereby effectively improving the service life of the device. Moreover, the used measuring component can be pressed, prompting the measuring component to reset and preventing the measuring component from getting stuck inside the device, resulting in a reduction in the measurement progress when the next heavy rainfall or continuous rainfall occurs.

[0010] As a further improvement of the above solution, the sliding block is a rectangular block, and the width of the sliding block is greater than the width of the notch of the sliding groove. By using a sliding block with a width greater than the width of the notch of the sliding groove, the sliding block can be prevented from falling off the sliding groove.

[0011] As a further improvement of the above solution, a plurality of sliding grooves are formed in the inner wall of the housing, and sliding blocks fixed on the closing plate are slidably connected inside the sliding grooves. By the cooperation of the sliding grooves and the sliding blocks, the stability performance of the closing plate can be improved.

[0012] As a further improvement of the above solution, an annular groove is formed on the side of the mounting plate close to the housing, and a connecting ring is slidably connected inside the annular groove. A first connecting column fixed on the housing is fixed to the bottom of one end of the connecting ring, and a second connecting column fixed on the mounting housing is fixed to the bottom of the other end of the connecting ring. Both the first connecting column and the second connecting column slide inside the notch of the annular groove. By the sliding cooperation of the annular groove and the connecting ring, and by the cooperation of the first connecting column, the second connecting column and the connecting ring, the stability performance of the mounting plate can be improved.

[0013] As a further improvement of the above solution, a movable door is hinged to the outside of the housing, a sealing ring is provided on the movable door, and a handle is fixed to the outside of the movable door. By opening the movable door, it is convenient for the user to repair the components inside the housing.

[0014] As a further improvement of the above solution, a guide rod is provided above the movable end of the loading plate, a plurality of fixing blocks fixed on the loading plate are fixed on the guide rod, limiting grooves are formed at both ends of the guide rod, and the rope slides inside the adjacent limiting grooves. By the cooperation of the guide rod and the limiting grooves, the rope can be guided to prevent the rope from deviating during the traction process.

[0015] As a further improvement of the above solution, a plurality of fans are fixed on the inner wall of the housing, the fans are arranged in a staggered manner with the laser rangefinder, and a plurality of ventilation holes are formed on the housing. By the operation of the fans, the equipment stored inside the housing can be ventilated to prevent the equipment inside the housing from rusting due to being in a humid air environment for a long time, and the service life of the equipment can be improved.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The present invention can measure the depth of accumulated water on urban roads, reduce the interference of external factors on the measurement results, thereby effectively improving the measurement accuracy, and can give warnings to passing pedestrians when the depth of accumulated water exceeds the warning line, avoiding pedestrians blindly passing through sections with deep accumulated water, and can circularly display the data of the depth of accumulated water, thus facilitating pedestrians to observe, and has high working performance.

[0018] 2. The present invention can store and protect idle devices, thereby preventing the devices from being exposed to the outside for a long time during idleness, which may cause device aging. Subsequently, the service life of the devices can be effectively extended. Moreover, it can compress the measuring components after use, thus prompting the measuring components to reset and avoiding the measuring components from getting stuck inside the devices, which may lead to a reduction in the measuring progress when the next heavy rainfall or continuous rainfall occurs. Consequently, the measuring accuracy and battery life of the devices can be effectively improved.

[0019] 3. The present invention can block the debris in the accumulated water, thereby preventing the debris mixed in the accumulated water from entering the inside of the device and causing the device to be blocked. Additionally, it can dredge the debris blocking components, enabling the height of the accumulated water inside the device to be flush with the height of the accumulated water outside, thereby improving the measuring progress of the device. Moreover, it can adaptively adjust the blocking components according to the usage requirements of the staff, making it convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of an urban waterlogging road pedestrian safety warning device;

[0021] Figure 2 is a schematic structural diagram of the display screen storage state in an urban waterlogging road pedestrian safety warning device;

[0022] Figure 3 is a schematic structural diagram of the mounting plate in an urban waterlogging road pedestrian safety warning device;

[0023] Figure 4 is a schematic structural diagram of the water inlet in an urban waterlogging road pedestrian safety warning device;

[0024] Figure 5 is Figure 2 the enlarged schematic structural diagram at position A in

[0025] Figure 6 is Figure 4 the enlarged schematic structural diagram at position B in

[0026] Figure 7 is a schematic diagram of the loading plate in an urban waterlogging road pedestrian safety warning device;

[0027] Figure 8 is a schematic diagram of an urban waterlogging road pedestrian safety warning device.

[0028] MAIN SYMBOL DESCRIPTION:

[0029] 1. Base; 2. Housing; 3. Mounting plate; 4. Loading plate; 5. Connecting plate; 6. Display screen; 7. Buzzer; 8. Laser rangefinder; 9. Floating block; 10. Water inlet; 11. Loading box; 12. Rope; 13. Storage opening; 14. Sealing plate; 15. Chute; 16. Pushing plate; 17. Fan; 18. Sliding groove; 19. Connecting rope; 20. Pressing block; 21. Ventilation hole; 22. Support plate; 23. Mounting shell; 24. Driving shaft; 25. Driving gear; 26. Connecting gear; 27. Connecting column; 28. Filter screen; 29. Lead screw; 30. Support block; 31. Pushing spring; 32. Limiting sleeve; 33. Cam. Detailed implementation manners

[0030] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0031] Embodiment 1:

[0032] Combined with Figure 1 , a pedestrian safety warning device for urban waterlogged roads in this embodiment includes a base 1 and a housing 2 fixed on the base 1. Above the housing 2, there is a mounting plate 3. At one end of the mounting plate 3, there is a loading plate 4. On the mounting plate 3, there is a positioning component for fixing the position of the loading plate 4. On both sides of the end of the loading plate 4 close to the mounting plate 3, there are connecting plates 5 hinged to the outside of the mounting plate 3. At the bottom of the loading plate 4, there is a display screen 6. At one end of the display screen 6, there is a buzzer 7 fixed to the bottom of the loading plate 4. On the inner wall of the top of the housing 2, there is a laser rangefinder 8. Inside the housing 2, there is a floating block 9 slidably connected to the output end of the laser rangefinder 8. The floating block 9 is made of rubber or wood. On one side of the bottom of the housing 2, there is a water inlet 10.

[0033] The implementation principle of a pedestrian safety warning device for urban waterlogged roads in this application embodiment is as follows: When urban waterlogging occurs, the accumulated water on the urban road will enter the inside of the housing 2 through the water inlet 10. As the accumulated water enters, the floating block 9 will float on the water surface of the accumulated water. At this time, through the operation of the laser rangefinder 8, the corresponding height of the floating block 9 can be detected. When the floating block 9 floats to a relatively high height, the laser rangefinder 8 will transmit a signal to the display screen 6, and the accumulated water depth at this location will be displayed through the display screen 6. When the depth exceeds the warning line, the buzzer 7 will sound an alarm to warn the passing pedestrians, avoiding pedestrians blindly passing through sections with deep accumulated water. And by measuring the floating block 9, the error can be reduced, thereby avoiding the laser rangefinder 8 directly measuring the water surface, resulting in measurement errors. And through the protection of the housing 2, the interference from the outside to the floating block 9 can be reduced, thereby effectively improving the measurement accuracy.

[0034] Inside the housing 2, there are multiple support blocks 30 fixed on the base 1. The bottom of the floating block 9 abuts against the support blocks 30, and the floating block 9 can be supported by the support blocks 30.

[0035] Embodiment 2:

[0036] Combined with Figures 4 - 6 On the basis of Embodiment 1, the further improvement of this embodiment lies in that: a connecting column 27 fixed on the mounting plate 3 is rotatably connected to the top of the housing 2. An outer wall of the connecting column 27 is fixedly sleeved with a connecting gear 26. A support plate 22 fixed on the base 1 is arranged on one side of the housing 2. A mounting shell 23 is fixed on the top of the support plate 22. A first motor is fixed inside the mounting shell 23. The first motor is a stepper motor. An output end of the first motor is drivingly connected to a driving shaft 24 whose other end is rotatably connected to the base 1. An outer wall of the driving shaft 24 is fixedly sleeved with a driving gear 25 meshing with the connecting gear 26. A filter screen 28 is slidably connected inside the water inlet 10. Both ends of the filter screen 28 are provided with sliding holes. A lead screw 29 is slidably inserted through the sliding holes. An end of the lead screw 29 inside the housing 2 is fixed on an adjacent support block 30. A pushing spring 31 is sleeved outside the lead screw 29 inside the housing 2. An end of the lead screw 29 outside the housing 2 is threadedly sleeved with a limiting sleeve 32 whose diameter is larger than the aperture of the sliding hole. An outer wall of the driving shaft 24 is fixedly sleeved with a plurality of cams 33 contacting the filter screen 28. When the display screen 6 shows the water accumulation depth, the first motor can be operated to drive the driving shaft 24 to rotate. At this time, through the cooperation of the connecting gear 26 and the driving gear 25, the connecting column 27 can be driven to rotate, the mounting plate 3 can be driven to rotate, the connecting plate 5 and the loading plate 4 can be driven to rotate, and the display screen 6 can be driven to rotate. At this time, the rotating display screen 6 can circumferentially display the water accumulation depth, thus facilitating pedestrians to observe. And through the filter screen 28, the water liquid entering from the water inlet 10 can be filtered to prevent sundries mixed in the accumulated water from entering the inside of the housing 2 through the water inlet 10, resulting in the blockage of the water inlet 10. And when the driving shaft 24 rotates, the cam 33 will be driven to rotate. At this time, the rotating cam 33 will intermittently press the filter screen 28. At this time, with the pushing elasticity of the pushing spring 31, the filter screen 28 will be driven to oscillate reciprocally to dredge the filter holes of the filter screen 28 to prevent the filter screen 28 from being blocked by sundries in the accumulated water. And by rotating the limiting sleeve 32 to detach the limiting sleeve 32 from the lead screw 29, it is convenient for the user to disassemble the filter screen 28, which is convenient to use.

[0037] Embodiment 3:

[0038] Combined with Figure 2 、 3, 7 and 8, this embodiment is further improved on the basis of embodiment 1 in that: the positioning assembly includes a loading box 11 fixed on the top side of the mounting plate 3, a motor 2 is fixed to the inner wall of one end of the loading box 11, the motor 2 is a forward and reverse stepping motor, the output end of the motor 2 is transmission-connected to a winding shaft whose other end is rotationally connected to the inner wall of the other end of the loading box 11, a rope 12 is fixedly wound around both ends of the winding shaft, the tail end of the rope 12 extends out of the loading box 11 and is fixed to the movable end of the mounting plate 3, a receiving opening 13 that slidably cooperates with the display screen 6 is opened on the top of the shell 2 near the display screen 6, and the inner sliding of the shell 2 A closing plate 14 for closing the receiving opening 13 is connected, a push plate 16 in contact with the closing plate 14 is hingedly connected to the inner wall of the shell 2, the push plate 16 is staggered with the laser rangefinder 8, a plurality of return springs fixed to the inner wall of the shell 2 are fixed on the push plate 16, a sliding groove 18 is provided on the side of the loading plate 4 close to the display screen 6, a sliding block is slidably connected inside the sliding groove 18, a connecting rope 19 is fixed on the sliding block, the tail end of the connecting rope 19 extends to the inside of the shell 2, and a pressure block 20 staggered with the laser rangefinder 8 is fixed, when the heavy rain or continuous rain ends, the winding shaft can be driven to rotate by the operation of the motor 2 The rotating reel 12 will release the rope 12 wound around the outside of the reel. With the released rope 12, the loading plate 4 will deflect. The deflected loading plate 4 will drive the display screen 6 and the buzzer 7 to deflect. The deflected display screen 6 and the buzzer 7 will enter the interior of the storage opening 13 and contact the closing plate 14. The deflected display screen 6 will press the closing plate 14 to move. When the display screen 6 enters the interior of the housing 2 through the storage opening 13, the display screen 6 and the buzzer 7 will be stored and protected inside the housing 2, thereby preventing the display screen 6 and the buzzer 7 from being moved. When idle, it is exposed to the outside world for a long time, causing the equipment to age, thereby effectively improving the service life of the equipment, and when the loading plate 4 is deflected, the sliding block located inside the loading plate 4 will be displaced as the loading plate 4 is deflected. At this time, the displaced sliding block will release the connecting rope 19, and the pressure block 20 limited by the connecting rope 19 on the inner wall of the shell 2 will be vertically displaced accordingly. At this time, the vertically displaced pressure block 20 will press the floating block 9, thereby prompting the floating block 9 to reset, avoiding the floating block 9 from being stuck inside the shell 2, resulting in the next time heavy rain or continuous rain occurs, the measurement progress is reduced, and the endurance is high.

[0039] The sliding block is a rectangular block, and the width of the sliding block is greater than the width of the notch of the sliding groove 18. By using a sliding block with a width greater than the width of the notch of the sliding groove 18, the sliding block can be prevented from falling off from the sliding groove 18.

[0040] A plurality of sliding grooves 15 are formed in the inner wall of the housing 2, and a slider fixed on the closing plate 14 is slidably connected inside the sliding groove 15. Through the cooperation of the sliding groove 15 and the slider, the stability of the closing plate 14 can be improved.

[0041] An annular groove is formed on one side of the mounting plate 3 close to the housing 2. A connecting ring is slidably connected inside the annular groove. A first connecting column fixed on the housing 2 is fixed to the bottom of one end of the connecting ring, and a second connecting column fixed on the mounting housing 23 is fixed to the bottom of the other end of the connecting ring. Both the first connecting column and the second connecting column slide inside the notch of the annular groove. Through the sliding cooperation of the annular groove and the connecting ring, and through the cooperation of the first connecting column, the second connecting column and the connecting ring, the stability of the mounting plate 3 can be improved.

[0042] A movable door is hinged to the outside of the housing 2. A sealing ring is provided on the movable door, and a handle is fixed to the outside of the movable door. By opening the movable door, it is convenient for the user to repair the components inside the housing 2.

[0043] A guide rod is provided above the movable end of the loading plate 4. A plurality of fixing blocks fixed on the loading plate 4 are fixed on the guide rod. Limiting grooves are formed at both ends of the guide rod. The rope 12 slides inside the adjacent limiting grooves. Through the cooperation of the guide rod and the limiting grooves, the rope 12 can be guided to prevent the rope 12 from shifting during the traction process.

[0044] A plurality of fans 17 are fixed to the inner wall of the housing 2. The fans 17 are arranged in a staggered manner with the laser rangefinder 8. A plurality of ventilation holes 21 are formed in the housing 2. Through the operation of the fans 17, the equipment stored inside the housing 2 can be ventilated to prevent the equipment inside the housing 2 from rusting due to being in a humid air environment for a long time, and the service life of the equipment can be extended.

[0045] Working principle: When urban flooding occurs, the accumulated water on the urban roads will enter the interior of the housing 2 through the water inlet 10. As the accumulated water enters, the floating block 9 will float on the surface of the accumulated water. At this time, the corresponding height of the floating block 9 can be detected by the operation of the laser rangefinder 8. When the floating block 9 floats to a higher height, the laser rangefinder 8 will transmit a signal to the display screen 6, and the depth of the accumulated water in this area will be displayed on the display screen 6. When the depth exceeds the warning line, the buzzer 7 will sound an alarm to warn pedestrians to avoid pedestrians blindly passing through the road section with deeper water. By measuring the floating block 9, the error can be reduced, thereby avoiding the laser rangefinder 8 from directly measuring the water surface, resulting in measurement errors. And through the protection of the shell 2, the interference of the outside world on the floating block 9 can be reduced, thereby effectively improving the accuracy of the measurement, and the water entering the water inlet 10 can be filtered through the filter 28 to prevent the debris mixed in the accumulated water from entering the interior of the shell 2 through the water inlet 10, causing the water inlet 10 to be blocked. When the display screen 6 shows the depth of accumulated water, the drive shaft 24 can be driven to rotate through the operation of the motor 1. At this time, the connecting gear 26 and the driving gear 25 can be used to drive the connecting column 27 to rotate, drive the mounting plate 3 to rotate, drive the connecting plate 5 and the loading plate 4 to rotate, and drive the display screen 6 to rotate. At this time, the rotating display screen 6 can display the data of the depth of accumulated water in a circumferential direction, so as to facilitate pedestrians to Observation, and when the drive shaft 24 rotates, it will drive the cam 33 to rotate. At this time, the rotating cam 33 will intermittently press the filter screen 28. At this time, with the pushing elasticity of the push spring 31, the filter screen 28 will be driven to oscillate back and forth, and the filter holes of the filter screen 28 will be dredged to prevent the filter screen 28 from being blocked by debris in the accumulated water. By rotating the limiting sleeve 32, the limiting sleeve 32 is removed from the screw rod 29, so that the user can disassemble the filter screen 28 conveniently. When heavy rain or continuous rain ends, the winding shaft can be driven to rotate by the operation of the motor 2. At this time, the rotating winding shaft will release the rope 12 wrapped around the outside of the winding shaft. At this time, with the released rope 12, the loading plate 4 will deflect. The deflected loading plate 4 will drive the display screen 6 and the buzzer 7 to deflect, and the deflected display screen 6 and the buzzer 7 will enter the interior of the storage opening 13 and contact the closing plate 14. The deflected display screen 6 will press the closing plate 14 to move. When the display screen 6 enters the interior of the shell 2 through the storage opening 13, the display screen 6 and the buzzer 7 will be stored and protected inside the shell 2, thereby preventing the display screen 6 and the buzzer 7 from being exposed to the outside for a long time when idle, causing equipment aging, thereby effectively improving the service life of the equipment, and when the loading plate 4 is deflected, the sliding block located inside the loading plate 4 will move along with the deflected loading plate 4, and the displaced sliding block will release the connecting rope 19,At this time, the pressing block 20 restricted on the inner wall of the housing 2 by the connecting rope 19 will undergo a vertical displacement accordingly. At this time, the pressing block 20 undergoing a vertical displacement will press the floating block 9, thereby prompting the floating block 9 to reset, avoiding the floating block 9 being stuck inside the housing 2, resulting in a reduced measurement progress and high battery life when the next heavy rainfall or continuous rainfall occurs.

[0046] The above embodiments are only the preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An early warning device for pedestrian safety on urban waterlogged roads, comprising a base and a housing fixed on the base, characterized in that, Above the said housing, there is a mounting plate. One end of the mounting plate is provided with a loading plate. On the mounting plate, there is a positioning component for fixing the position of the loading plate. On both sides of the end of the loading plate close to the mounting plate, there are connecting plates hinged to the outside of the mounting plate. At the bottom of the loading plate, there is a display screen. One end of the display screen is provided with a buzzer fixed to the bottom of the loading plate. Inside the top wall of the housing, there is a laser rangefinder. Inside the housing, there is a floating block slidably connected corresponding to the output end of the laser rangefinder. On one side of the bottom of the housing, there is a water inlet. At the top of the housing, there is a connecting column rotatably connected and fixed to the mounting plate. On the outer wall of the connecting column, there is a connecting gear fixedly sleeved. On one side of the housing, there is a support plate fixed to the base. On the top of the support plate, there is an installation shell. Inside the installation shell, there is a motor one. The output end of the motor one is drivingly connected to a drive shaft whose other end is rotatably connected to the base. On the outer wall of the drive shaft, there is a drive gear meshing with the connecting gear. Inside the water inlet, there is a filter screen slidably connected. At both ends of the filter screen, there are sliding holes. Inside the sliding holes, there is a lead screw slidably penetrating. The end of the lead screw inside the housing is fixed to the adjacent support block. Outside the lead screw inside the housing, there is a pushing spring sleeved. The end of the lead screw outside the housing is threadedly sleeved with a limiting sleeve whose diameter is larger than the aperture of the sliding hole. On the outer wall of the drive shaft, there are a plurality of cams in contact with the filter screen. When the display screen shows the water accumulation depth, through the operation of the motor one, the drive shaft rotates. At this time, through the cooperation of the connecting gear and the drive gear, the connecting column is driven to rotate, thereby driving the mounting plate to rotate, and driving the connecting plate and the loading plate to rotate, and finally driving the display screen to rotate. When the drive shaft rotates, it will drive the cams to rotate. At this time, the rotating cams will intermittently press the filter screen. With the elastic pushing of the pushing spring, the filter screen will be driven to oscillate reciprocally to dredge the filter holes of the filter screen.

2. The pedestrian safety warning device for urban waterlogging roads according to claim 1, characterized in that Inside the housing, there are a plurality of support blocks fixed to the base. The bottom of the floating block abuts against the support blocks.

3. The pedestrian safety warning device for urban waterlogging roads according to claim 1, characterized in that The positioning component includes a loading box fixed to the top side of the mounting plate. Inside one end wall of the loading box, there is a motor two. The output end of the motor two is drivingly connected to a winding shaft whose other end is rotatably connected to the other end wall inside the loading box. At both ends of the winding shaft, there are ropes fixedly wound. The tail ends of the ropes extend out of the loading box and are fixed to the movable end of the mounting plate. On the top of the housing close to the display screen side, there is a storage opening slidably matched with the display screen. Inside the housing, there is a closing plate slidably connected for closing the storage opening. Inside the housing wall, there is a push plate hinged to the closing plate. The push plate is arranged in a dislocation manner with the laser rangefinder. On the push plate, there are a plurality of return springs fixed to the housing wall. On the side of the loading plate close to the display screen, there is a sliding groove. Inside the sliding groove, there is a sliding block slidably connected. On the sliding block, there is a connecting rope. The tail end of the connecting rope extends into the housing and is fixed with a pressing block arranged in a dislocation manner with the laser rangefinder.

4. The pedestrian safety warning device for urban waterlogged roads according to claim 3, characterized in that, The sliding block is a rectangular block, and the width of the sliding block is greater than the width of the notch of the sliding groove.

5. The pedestrian safety warning device for urban waterlogging roads according to claim 3, characterized in that, A plurality of sliding grooves are formed in the inner wall of the housing, and sliders fixed on the closing plate are slidably connected inside the sliding grooves.

6. The pedestrian safety warning device for urban waterlogging roads according to claim 1, characterized in that, An annular groove is formed on one side of the mounting plate close to the housing, and a connecting ring is slidably connected inside the annular groove. A first connecting column fixed on the housing is fixed to the bottom of one end of the connecting ring, and a second connecting column fixed on the mounting shell is fixed to the bottom of the other end of the connecting ring. Both the first connecting column and the second connecting column slide inside the notch of the annular groove.

7. The pedestrian safety warning device for urban waterlogging roads according to claim 1, characterized in that, A movable door is hinged to the outside of the housing, a sealing ring is provided on the movable door, and a handle is fixed to the outside of the movable door.

8. The pedestrian safety warning device for urban waterlogging roads according to claim 3, characterized in that, A guide rod is provided above the movable end of the loading plate. A plurality of fixing blocks fixed on the loading plate are fixed on the guide rod. Limiting grooves are formed at both ends of the guide rod, and the rope slides inside adjacent limiting grooves.

9. The pedestrian safety warning device for urban waterlogging roads according to claim 1, characterized in that, A plurality of fans are fixed to the inner wall of the housing. The fans are arranged in a staggered manner with the laser rangefinder, and a plurality of ventilation holes are formed in the housing.

Images