Early warning device for disaster prevention and reduction monitoring

Abstract

The invention discloses an early warning device for disaster prevention and reduction monitoring, and relates to the technical field of meteorological early warning, and the device comprises a supporting frame which is used for being fixed on a side slope; the displacement sensor is fixedly installed at the bottom of the supporting frame, and the displacement sensor comprises a first detection module and a first communication module; the measuring cup is fixedly mounted on the inner wall of the supporting frame; the water level sensor fixedly penetrates through the inner wall and the outer wall of the measuring cup, and the water level sensor comprises a second detection module and a second communication module; the carrying frame is fixedly mounted in the measuring cup; the lifting plate penetrates through the bottom of the carrying frame in a sliding mode, the water discharge amount is dynamically adjusted through the lifting plate, the water level rising speed is positively correlated with the rainfall intensity, the time for giving an alarm is effectively shortened, and the problem of delayed alarm in tunnel construction caused by fixed drainage holes is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of meteorological early warning, and in particular to an early warning device for disaster prevention and mitigation monitoring. Background Art

[0002] The disaster prevention and mitigation monitoring and early warning device for underground tunnel construction design aims to timely monitor natural disasters that may occur during tunnel construction, such as heavy rainfall, water accumulation or soil landslide, etc., provide real-time early warning, and thus take corresponding emergency measures to ensure construction safety and project progress.

[0003] The patent with the patent publication number CN222088142U relates to an early warning device for disaster prevention and mitigation monitoring. For the problems of the existing early warning device being relatively complex and having great restrictions on the terrain, the early warning device includes a mounting column, a bearing part, a water cup and a rain sensor. The mounting column is partially buried in a preset area; the bearing part is arranged on the non-buried part of the mounting column, and the bearing part has a bearing cavity; the water cup is arranged in the bearing cavity, and the water cup is provided with a water inlet, a water leakage port and a water containing cavity; the rain sensor is arranged on the bearing part, and the rain sensor includes a sensor body, a probe and a first communication module; the probe is connected to the sensor body, and the probe penetrates through the side wall of the water cup and extends into the water containing cavity. This patent detects the real-time rainfall in a predetermined area through the water cup and the rain sensor to determine the degree of natural disaster and give an early warning. This solution has a simple structure, is easy to install and has a low cost, has no restrictions on the terrain, and is suitable for areas with heavy rainfall and frequent natural disasters.

[0004] In the above patent, it has the characteristics of simple structure, easy installation and low cost. By detecting the real-time rainfall in a predetermined area through the water cup and the rain sensor to determine the degree of natural disaster and give an early warning, it helps to reduce the losses caused by natural disasters. However, during the construction process of the underground tunnel, the tunnel entrance needs to be monitored and alarmed in a timely manner. Since the size of the water leakage port of the water cup is fixed, the drainage rate cannot be dynamically adjusted according to the rainfall intensity. The fixed drainage rate makes the sensor unable to timely reflect the actual rainfall, which in turn leads to the lag of the early warning information. This delay will miss the best emergency response time, and then affect the timely adoption of preventive measures, increasing the safety risks and economic losses caused by rainfall during the tunnel construction process. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an early warning device for disaster prevention and mitigation monitoring, which solves the problems put forward in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An early warning device for disaster prevention and mitigation monitoring, comprising: a support frame for fixing on a slope; a displacement sensor fixedly installed at the bottom of the support frame, the displacement sensor including a first detection module and a first communication module; a measuring cup fixedly installed on the inner wall of the support frame; a water level sensor fixedly penetrating through the inner and outer walls of the measuring cup, the water level sensor including a second detection module and a second communication module; a carrier frame fixedly installed inside the measuring cup; a lifting plate slidably penetrating through the bottom of the carrier frame, with a number of through holes formed in the lifting plate for rainwater to pass through; a first spring disposed between the lifting plate and the carrier frame; a circular plate fixedly installed on the inner wall of the measuring cup, with a circular hole formed in the circular plate for rainwater to pass through. By dynamically adjusting the drainage volume of the lifting plate, the rising speed of the water level is positively correlated with the rainfall intensity, effectively shortening the time for issuing an alarm.

[0007] According to the above technical solution, a filter plate is provided at the top of the carrier frame, and two clamping plates are fixedly installed on the surface of the filter plate. The filter plate is in contact with the top of the measuring cup, and a conical surface is formed at the bottom of the filter plate. By providing the filter plate, foreign matters in the rainwater can be effectively blocked, preventing impurities from entering the inside of the measuring cup and affecting the measurement accuracy.

[0008] According to the above technical solution, a rectangular groove is formed on one side of the carrier frame close to the clamping plate, and the two clamping plates are in contact with the inner wall of the rectangular groove. By applying effective limitation to the filter plate, the impact caused by slope rockfalls and strong winds can be effectively resisted.

[0009] According to the above technical solution, a pushing device for quickly disassembling the filter plate and an auxiliary device for controlling the pushing speed are provided inside the carrier frame; the pushing device includes a fixed tube, a telescopic frame, a second spring, and a contact tube. The fixed tube is fixedly installed inside the carrier frame, the telescopic frame slidably penetrates through the top of the fixed tube, the second spring is disposed between the telescopic frame and the fixed tube, the contact tube is fixedly installed on the top of the telescopic frame, and the telescopic frame is in contact with the bottom of the filter plate. By providing the second spring, the operator needs to apply a certain downward pressure when installing the filter plate, preventing the problem of improper installation caused by random operation.

[0010] A rubber plate slidably penetrates through the inner and outer walls of the contact tube. A reset spring piece is disposed between the rubber plate and the contact tube. The side of the rubber plate away from the reset spring piece is in contact with the circumferential surface of the filter plate. A C-shaped buckle is fixedly installed at the bottom of the telescopic frame. By applying a stable clamping force to the filter plate through the rubber plate, it not only ensures the smooth rising of the filter plate but also prevents the filter plate from falling out of control at the end point of ejection.

[0011] According to the above technical solution, the auxiliary device includes a hollow tube, a sliding rod, a linkage plate and a T-shaped rod. The hollow tube is fixedly mounted on the inner wall of the mounting frame, the sliding rod slides through the inner and outer walls of the hollow tube, the linkage plate is fixedly mounted on the surface of the sliding rod, and the T-shaped rod is fixedly mounted on the top of the linkage plate. The T-shaped rod contacts the inner walls of two C-shaped buckles, which helps to improve the smoothness of the overall movement by evenly transmitting the supporting force to the bottom of the telescopic frame, thereby improving the efficiency of maintenance.

[0012] According to the above technical solution, a fixed plate is fixedly installed on the surface of the linkage plate, a rectangular plate is rotatably installed on the inner wall of the fixed plate, and a plurality of V-shaped plates are fixedly installed on the inner wall of the hollow tube. The rectangular plate itself is elastic. By providing an elastic rectangular plate, it helps to extend the service life of the rectangular plate itself, thereby ensuring long-term use.

[0013] According to the above technical solution, the side of the rectangular sheet away from the T-shaped rod is in contact with the inner wall of the fixed plate, and the side of the V-shaped sheet close to the rectangular sheet is provided with an arc surface. By applying the continuous vibration generated by the collision to the telescopic frame, the telescopic frame is prevented from being exposed to rain for a long time, and the rust on the surface will not have an adverse effect on the movement.

[0014] The present invention provides an early warning device for disaster prevention and mitigation monitoring. It has the following beneficial effects: (1) In the early warning device for disaster prevention and mitigation monitoring, the card plate is disengaged from the rectangular groove to release the limiting effect. By applying effective limiting to the filter plate, it can effectively resist the impact caused by falling rocks and strong winds on the tunnel entrance slope, and prevent the filter plate from accidentally falling off, which will cause the disaster prevention and mitigation monitoring operation to fail. At the same time, the circular plate blocks part of the through holes on the lifting plate, accelerating the rise of the water level in the measuring cup. The drainage volume is dynamically adjusted through the lifting plate. The water level rise speed is positively correlated with the rainfall intensity, effectively shortening the time to issue an alarm and preventing the delayed alarm problem caused by fixed drainage holes.

[0015] (2) In the early warning device for disaster prevention and mitigation monitoring, the rubber plate is tightly attached to the circumferential surface of the filter plate, and a flexible clamp is applied to the filter plate. The rubber plate applies a stable clamping force to the filter plate, which not only ensures that the filter plate rises steadily, but also prevents the filter plate from falling out of control at the end of the ejection. At the same time, the operator rotates the filter plate clockwise to complete the installation of the filter plate. By setting a No. 2 spring, the operator needs to apply a certain amount of downward pressure when installing the filter plate, so as to prevent the problem of improper installation due to arbitrary operation.

[0016] (3)The early warning device for disaster prevention and mitigation monitoring. The T-shaped rod evenly transmits the supporting force to the bottom of the telescopic frame. By evenly transmitting the supporting force to the bottom of the telescopic frame, it helps to improve the smoothness of the overall movement, thereby increasing the maintenance efficiency. At the same time, the rectangular piece acts on the telescopic frame through the T-shaped rod. By acting on the telescopic frame the continuous vibration generated by the collision, it prevents the telescopic frame from being exposed to rainwater for a long time and the surface rust from having an adverse effect on the movement. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the working scenario of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the measuring cup of the present invention; Figure 4 It is a schematic diagram of the structure of the mounting rack and the clamping plate of the present invention; Figure 5 It is a schematic diagram of the half-sectional structure of the mounting rack of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in; Figure 7 It is a schematic diagram of the internal structure of the fixed pipe and the hollow pipe of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in.

[0018] In the figure: 1, support frame; 2, displacement sensor; 3, measuring cup; 4, water level sensor; 5, mounting rack; 6, lifting plate; 7, first spring; 8, circular plate; 9, filter plate; 10, clamping plate; 111, fixed pipe; 112, telescopic frame; 113, second spring; 114, contact pipe; 115, rubber plate; 116, reset elastic piece; 117, C-shaped buckle; 121, hollow pipe; 122, sliding rod; 123, linkage plate; 124, T-shaped rod; 125, fixing plate; 126, rectangular piece; 127, V-shaped piece. Detailed Embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 - Figure 8, an embodiment of the present invention is: an early warning device for disaster prevention and mitigation monitoring, including: a support frame 1, the support frame 1 is used to be fixed on the slope of the tunnel entrance; a displacement sensor 2, the displacement sensor 2 is fixedly installed at the bottom of the support frame 1, the displacement sensor 2 includes a first detection module and a first communication module, after the first detection module of the displacement sensor 2 detects information, it sends an alarm to the monitoring platform through the first communication module; a measuring cup 3, the measuring cup 3 is fixedly installed on the inner wall of the support frame 1; a water level sensor 4, the water level sensor 4 is fixedly penetrated through the inner and outer walls of the measuring cup 3, the water level sensor 4 includes a second detection module and a second communication module; a mounting frame 5, the mounting frame 5 is fixedly installed inside the measuring cup 3; a lifting plate 6, the lifting plate 6 slidably penetrates through the bottom of the mounting frame 5, a plurality of through holes are formed in the lifting plate 6, and the through holes are used for rainwater to pass through; a first spring 7, the first spring 7 is arranged between the lifting plate 6 and the mounting frame 5; a circular plate 8, the circular plate 8 is fixedly installed on the inner wall of the measuring cup 3, a circular hole is formed in the circular plate 8, and the circular hole is used for rainwater to pass through, and the rainwater is discharged through the through holes on the lifting plate 6 and the circular hole on the circular plate 8.

[0021] A filter plate 9 is arranged at the top of the mounting frame 5, rainwater enters the measuring cup 3 through the filter plate 9, the filter plate 9 blocks foreign matters in the rainwater, two clamping plates 10 are fixedly installed on the surface of the filter plate 9, the filter plate 9 contacts the top of the measuring cup 3, and a conical surface is formed at the bottom of the filter plate 9.

[0022] A rectangular groove is formed on one side of the mounting frame 5 close to the clamping plate 10, the two clamping plates 10 contact the inner wall of the rectangular groove, and the clamping plates 10 are separated from the rectangular groove, so that the limiting effect exerted by the mounting frame 5 on the filter plate 9 in the vertical direction is released.

[0023] During the operation of this embodiment, rainwater enters the measuring cup 3 through the filter plate 9. The filter plate 9 blocks foreign matters in the rainwater to prevent impurities from entering the inside of the measuring cup 3 and affecting the measurement accuracy. When the rainfall is small, the amount of rainwater entering the measuring cup 3 is small, and most of the rainwater quickly drains out through the through holes on the lifting plate 6 and the round holes on the round plate 8. At this time, the drainage rate is greater than the water inlet rate, there is no accumulated water in the measuring cup 3, and the water level sensor 4 does not trigger an alarm. When the rainfall intensity gradually increases, the rainwater entering the measuring cup 3 exceeds the drainage capacity of the through holes, and the rainwater in the measuring cup 3 begins to accumulate. The pressure exerted by the rainwater on the lifting plate 6 increases accordingly, causing the lifting plate 6 to move downward under the action of the pressure. The lifting plate 6 moves to squeeze the first spring 7. At the same time, the lifting plate 6 moves downward until it contacts the round plate 8. At this time, the round plate 8 blocks some of the through holes on the lifting plate 6, resulting in a decrease in the drainage rate, thereby accelerating the rise of the water level in the measuring cup 3. When the water level rises to the preset threshold, the second detection module of the water level sensor 4 detects a signal and sends an alarm to the monitoring platform through the second communication module. By dynamically adjusting the drainage volume through the lifting plate 6, the rising speed of the water level is positively correlated with the rainfall intensity, effectively shortening the time to issue an alarm and preventing the problem of delayed alarm caused by fixed drainage holes. When the operator performs maintenance, the operator manually rotates the filter plate 9 counterclockwise. The rotation of the filter plate 9 drives the clamping plate 10 to move away from the rectangular groove. The clamping plate 10 disengages from the contact with the rectangular groove during the movement, so that the limiting effect exerted by the carrier frame 5 on the filter plate 9 in the vertical direction is released. The operator lifts the filter plate 9 upward to completely separate the filter plate 9 from the carrier frame 5. At this time, the operator can perform maintenance or replacement on the filter plate 9. After the maintenance is completed, the filter plate 9 is reinserted into the carrier frame 5 and rotated clockwise to make the clamping plate 10 snap into the rectangular groove again to restore the limiting state. By applying effective limitation to the filter plate 9, it can effectively resist the impact caused by the falling rocks on the tunnel entrance slope and strong winds, and prevent the filter plate 9 from accidentally falling off and causing the failure of the disaster prevention and mitigation monitoring operation.

[0024] Please refer to Figure 1 - Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, a pushing device for quickly disassembling the filter plate 9 and an auxiliary device for controlling the pushing speed are provided inside the carrier frame 5; the pushing device includes a fixed tube 111, a telescopic frame 112, a second spring 113 and a contact tube 114. The restored second spring 113 that has been compressed pushes the telescopic frame 112 to move upward. The fixed tube 111 is fixedly installed inside the carrier frame 5. The telescopic frame 112 slides through the top of the fixed tube 111. The second spring 113 is arranged between the telescopic frame 112 and the fixed tube 111. The contact tube 114 is fixedly installed on the top of the telescopic frame 112. The telescopic frame 112 contacts the bottom of the filter plate 9. The movement of the telescopic frame 112 exerts a thrust on the bottom of the filter plate 9, causing the movement of the telescopic frame 112 to drive the filter plate 9 to move upward.

[0025] A rubber plate 115 slides through the inner and outer walls of the contact pipe 114. A reset elastic piece 116 is arranged between the rubber plate 115 and the contact pipe 114. The restoration of the deformed reset elastic piece 116 drives the rubber plate 115 to move away from the contact pipe 114. The surface of the rubber plate 115 away from the reset elastic piece 116 contacts the circumferential surface of the filter plate 9. A C-shaped buckle 117 is fixedly installed at the bottom of the telescopic frame 112.

[0026] The auxiliary device includes a hollow pipe 121, a sliding rod 122, a linkage plate 123 and a T-shaped rod 124. When the sliding rod 122 moves, the hollow pipe 121 provides a supporting force for the sliding rod 122. The hollow pipe 121 is fixedly installed on the inner wall of the carrier 5. The sliding rod 122 slides through the inner and outer walls of the hollow pipe 121. The linkage plate 123 is fixedly installed on the surface of the sliding rod 122. The T-shaped rod 124 is fixedly installed on the top of the linkage plate 123. The T-shaped rod 124 contacts the inner walls of the two C-shaped buckles 117. The movement of the C-shaped buckle 117 drives the movement of the T-shaped rod 124, and the movement of the T-shaped rod 124 drives the movement of the linkage plate 123.

[0027] A fixing plate 125 is fixedly installed on the surface of the linkage plate 123. A rectangular piece 126 is rotatably installed on the inner wall of the fixing plate 125. When the linkage plate 123 moves, it also drives the fixing plate 125 to move upward. The movement of the fixing plate 125 drives the rectangular piece 126 to move upward. A number of V-shaped pieces 127 are fixedly installed on the inner wall of the hollow pipe 121. The rectangular piece 126 itself has elasticity.

[0028] The surface of the rectangular piece 126 away from the T-shaped rod 124 contacts the inner wall of the fixing plate 125. An arc surface is formed on the surface of the V-shaped piece 127 close to the rectangular piece 126. The arc surface of the V-shaped piece 127 exerts a resistance on the rectangular piece 126, and the rectangular piece 126 bends downward under the influence of the resistance.

[0029] When this embodiment is working, when the clamping plate 10 disengages from the rectangular groove, the compressed second spring 113 quickly returns to its original state. The restoration of the second spring 113 pushes the telescopic frame 112 to move upward. The movement of the telescopic frame 112 exerts a thrust on the bottom of the filter plate 9, causing the telescopic frame 112 to drive the filter plate 9 to move upward, reducing the manual lifting intensity. At the same time, the movement of the telescopic frame 112 drives the contact pipe 114 and the C-shaped buckle 117 to move upward together. The movement of the contact pipe 114 drives the rubber plate 115 to move upward. During the movement, the rubber plate 115 closely adheres to the circumferential surface of the filter plate 9, exerting a flexible clamping force on the filter plate 9 to ensure that the filter plate 9 remains stable during the rising process. When the second spring 113 is fully restored, the telescopic frame 112 stops moving, but the clamping force of the rubber plate 115 still remains to prevent the filter plate 9 from accidentally falling off due to inertia. At this time, the operator can take out the filter plate 9. The filter plate 9 separates from the rubber plate 115 during the movement, causing the deformed reset spring piece 116 to return to its original state and drive the rubber plate 115 to move away from the contact pipe 114. By applying a stable clamping force to the filter plate 9 through the rubber plate 115, it not only ensures the smooth rising of the filter plate 9 but also prevents the filter plate 9 from falling out of control at the end point of ejection. When installing the filter plate 9, the operator aligns the conical surface of the filter plate 9 downward with the mounting frame 5 and slowly controls the filter plate 9 to move downward. The conical surface of the filter plate 9 first contacts the rubber plate 115 and gradually squeezes the rubber plate 115, causing the rubber plate 115 to move toward the reset spring piece 116. The movement of the rubber plate 115 squeezes the reset spring piece 116, and the deformed reset spring piece 116 generates a reverse elastic force, causing the rubber plate 115 to closely adhere to the circumferential surface of the filter plate 9 to form a flexible clamping. The filter plate 9 continues to move downward until it contacts the top of the telescopic frame 112, causing the filter plate 9 to drive the telescopic frame 112 to move downward. The movement of the telescopic frame 112 squeezes the second spring 113. After the filter plate 9 contacts the mounting frame 5, the operator rotates the filter plate 9 clockwise so that the clamping plate 10 contacts the rectangular groove to complete the installation of the filter plate 9. By setting the second spring 113, a certain downward pressure needs to be applied by the operator when installing the filter plate 9 to prevent the problem of incomplete installation caused by random operation; When the C-shaped buckle 117 moves upward, the movement of the C-shaped buckle 117 drives the T-shaped rod 124 to move upward. The movement of the T-shaped rod 124 drives the linkage plate 123 to move upward. The movement of the linkage plate 123 drives the sliding rod 122 to move upward. When the sliding rod 122 moves, the hollow tube 121 provides a supporting force for the sliding rod 122. Under the supporting action, the sliding rod 122 improves the stability of the T-shaped rod 124. The T-shaped rod 124 evenly transmits the supporting force to the bottom of the telescopic frame 112, thereby improving the stability of the telescopic frame 112 during movement. By evenly transmitting the supporting force to the bottom of the telescopic frame 112, it helps to improve the stability of the overall movement, thereby increasing the maintenance efficiency. When the linkage plate 123 moves, it also drives the fixing plate 125 to move upward. The movement of the fixing plate 125 drives the rectangular piece 126 to move upward. During the movement of the rectangular piece 126, it contacts a number of V-shaped pieces 127. Each time they contact, the arc surface of the V-shaped piece 127 exerts a resistance on the rectangular piece 126. Affected by the resistance, the rectangular piece 126 bends downward. The bent rectangular piece 126 stores energy under the elastic action. When the rectangular piece 126 separates from the V-shaped piece 127, the deformed rectangular piece 126 quickly returns to its original shape and collides with the newly contacted V-shaped piece 127 to generate vibration, causing the rectangular piece 126 to collide with multiple V-shaped pieces 127 to generate continuous vibration. The rectangular piece 126 acts on the telescopic frame 112 through the T-shaped rod 124. Under the action of the vibration, the telescopic frame 112 moves smoothly. By applying the continuous vibration generated by the collision to the telescopic frame 112, it prevents the situation that the telescopic frame 112 is exposed to rainwater for a long time and rusts on the surface, which has an adverse effect on the movement.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An early warning device for disaster prevention and mitigation monitoring, characterized in that, For rainstorm early warning, including: A support frame (1), which is used to be fixed on the slope; A displacement sensor (2), which is fixedly installed at the bottom of the support frame (1). The displacement sensor (2) includes a first detection module and a first communication module; A measuring cup (3), which is fixedly installed on the inner wall of the support frame (1); A water level sensor (4), which is fixedly penetrated through the inner and outer walls of the measuring cup (3). The water level sensor (4) includes a second detection module and a second communication module; A mounting frame (5), which is fixedly installed inside the measuring cup (3); A lifting plate (6), which slidably penetrates through the bottom of the mounting frame (5). A plurality of through holes are formed in the lifting plate (6) for rainwater to pass through; A first spring (7), which is arranged between the lifting plate (6) and the mounting frame (5); A circular plate (8), which is fixedly installed on the inner wall of the measuring cup (3). A circular hole is formed in the circular plate (8) for rainwater to pass through.

2. The early warning device for disaster prevention and mitigation monitoring according to claim 1, characterized in that: A filter plate (9) is arranged at the top of the mounting frame (5). Two clamping plates (10) are fixedly installed on the surface of the filter plate (9). The filter plate (9) contacts with the top of the measuring cup (3). A conical surface is formed at the bottom of the filter plate (9); Wherein, a pushing device for quickly disassembling the filter plate (9) and an auxiliary device for controlling the pushing speed are arranged inside the mounting frame (5).

3. The early warning device for disaster prevention and mitigation monitoring according to claim 2, wherein: A rectangular groove is formed on one side of the mounting frame (5) close to the clamping plate (10). The two clamping plates (10) contact with the inner wall of the rectangular groove.

4. The early warning device for disaster prevention and mitigation monitoring according to claim 3, characterized in that: The pushing device includes a fixed pipe (111), a telescopic frame (112), a second spring (113) and a contact pipe (114). The fixed pipe (111) is fixedly installed inside the mounting frame (5). The telescopic frame (112) slidably penetrates through the top of the fixed pipe (111). The second spring (113) is arranged between the telescopic frame (112) and the fixed pipe (111). The contact pipe (114) is fixedly installed at the top of the telescopic frame (112). The telescopic frame (112) contacts with the bottom of the filter plate (9).

5. The warning device for disaster prevention and mitigation monitoring according to claim 4, characterized in that: A rubber plate (115) slidably penetrates through the inner and outer walls of the contact pipe (114). A reset spring piece (116) is arranged between the rubber plate (115) and the contact pipe (114). One side of the rubber plate (115) away from the reset spring piece (116) contacts with the circumferential surface of the filter plate (9). A C-shaped buckle (117) is fixedly installed at the bottom of the telescopic frame (112).

6. The warning device for disaster prevention and mitigation monitoring according to claim 5, characterized in that: The auxiliary device includes a hollow tube (121), a sliding rod (122), a linkage plate (123) and a T-shaped rod (124). The hollow tube (121) is fixedly installed on the inner wall of the carrying frame (5). The sliding rod (122) slidably penetrates the inner and outer walls of the hollow tube (121). The linkage plate (123) is fixedly installed on the surface of the sliding rod (122). The T-shaped rod (124) is fixedly installed on the top of the linkage plate (123). The T-shaped rod (124) contacts the inner walls of the two C-shaped fasteners (117).

7. The early warning device for disaster prevention and mitigation monitoring according to claim 6, wherein: A fixing plate (125) is fixedly installed on the surface of the linkage plate (123). A rectangular piece (126) is rotatably installed on the inner wall of the fixing plate (125). A plurality of V-shaped pieces (127) are fixedly installed on the inner wall of the hollow tube (121). The rectangular piece (126) itself has elasticity.

8. The early warning device for disaster prevention and mitigation monitoring according to claim 7, characterized in that: One side of the rectangular piece (126) away from the T-shaped rod (124) contacts the inner wall of the fixing plate (125). An arc surface is formed on one side of the V-shaped piece (127) close to the rectangular piece (126).

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