A water level monitoring device

Abstract

The present application relates to the technical field of hydraulic engineering, and particularly relates to a water level monitoring device, which comprises a vertical pipe, a floating assembly and a monitoring assembly arranged in the vertical pipe, a protection assembly, a drilling and inserting positioning assembly and an expansion assembly sleeved on the outside of the vertical pipe. When in use, the handle rod at the upper part of the vertical pipe is rotated to drive the drilling and inserting positioning assembly to rotate and drill into the ground, thereby realizing four-point synchronous anchoring. Meanwhile, the downward movement of the drilling and inserting positioning assembly pushes the multiple expansion support rods to expand outward through the adjusting mechanism, thereby effectively increasing the bottom support area. When the water level in the tunnel rises, the laser ranging sensor monitors the distance change between the laser ranging sensor and the reference sheet in real time, and the data is processed by the PLC controller to display the real-time water level. The present application effectively avoids impurity interference through the built-in monitoring system and the external filtering structure, thereby ensuring the monitoring accuracy. The four-point rotary drilling anchoring and the expandable support rod design significantly improve the anchoring efficiency and the anti-overturning stability, and are particularly suitable for complex working conditions such as underpass tunnels.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and in particular to a water level monitoring device. Background Technology

[0002] In the construction and operation of water conservancy projects and urban underpasses, real-time and reliable monitoring of water levels is crucial for preventing flooding and ensuring safety. Currently, the water level monitoring devices commonly used in this field typically include support columns, monitoring components, and floating components. They are assembled on-site and kept vertical to solve the problem of temporary water level gauges easily tipping over and affecting monitoring.

[0003] However, these existing water level monitoring devices still have significant shortcomings in practical applications, especially in complex environments such as underpasses with abundant debris. Firstly, most use an externally mounted float to raise a vertical rod, thus obscuring the infrared sensor for water level detection. This exposed structure is easily blocked or compressed by debris in the tunnel construction environment, hindering the float's movement and preventing stable and reliable monitoring and early warning functions. Secondly, the devices are mostly fixed using a single-point insertion method, which is difficult to insert smoothly in areas with high ground hardness, resulting in insecure fixing and easy loosening. This prevents stable and convenient multi-point anchoring, affecting the stability and ease of use. Furthermore, these devices generally have a small bottom support area and lack effective anti-overturning structures, posing a high risk of tilting when exposed to water flow or accidental collisions, severely impacting the accuracy of monitoring data and the long-term stability of the equipment.

[0004] Therefore, there is an urgent need for a new type of water level warning device that can adapt to the complex environment of underpass tunnels, has anti-interference monitoring capabilities, stable anchoring, and active anti-tilting functions, in order to overcome the shortcomings of existing technologies. Summary of the Invention

[0005] This invention provides a water level monitoring device to address the significant shortcomings of existing water level monitoring devices in practical applications, especially in complex environments such as underpasses with abundant debris. It enables safe and stable monitoring and early warning operations within underpasses, improving monitoring stability, ease of installation, and overall operational stability.

[0006] This invention provides a water level monitoring device, comprising a vertical pipe, a floating assembly, a monitoring assembly, a protective assembly, four sets of drilling and positioning assemblies, and multiple expansion assemblies. The vertical pipe has a handle fixed to its top outer periphery, a drainage filter plate installed at its bottom inner side, and a water inlet hole at its bottom outer periphery. The floating assembly includes a T-shaped guide rod, a float plate, and a float. The T-shaped guide rod passes through the top of the vertical pipe, the float is located inside the vertical pipe, and the float plate is connected to the bottom of the T-shaped guide rod and located above the float. The monitoring assembly includes a laser rangefinder sensor, a rangefinder reference plate, a PLC controller, and a display. The laser rangefinder sensor is fixed to the top inner side of the vertical pipe, the rangefinder reference plate is fixed to the float plate, and the PLC controller and display are fixed to the top of the vertical pipe. The PLC controller is connected to the laser rangefinder sensor via... The device is electrically connected to the display. The protective assembly includes a first disc, a second disc, and a protective cover. The first disc is rotatably sleeved on the bottom of the outer periphery of the vertical pipe, and the second disc and the protective cover are rotatably sleeved on the middle of the outer periphery of the vertical pipe. The bottom of the protective cover is connected to the second disc. Four sets of drilling and positioning assemblies are evenly distributed circumferentially on the outer periphery of the vertical pipe. One end of each drilling and positioning assembly is movably disposed on the second disc, and the other end passes through the first disc. The drilling and positioning assembly is engaged with the outer periphery of the vertical pipe and is adapted to move vertically under the rotation of the vertical pipe. The expansion assembly includes an expansion support rod and an adjustment mechanism. The bottom end of the expansion support rod is hinged to the outer edge of the first disc. The adjustment mechanism connects the drilling and positioning assembly and the expansion support rod and is adapted to adjust the expansion support rod to rotate along the hinge axis under the movement of the drilling and positioning assembly.

[0007] According to a water level monitoring device provided by the present invention, the drilling and positioning assembly includes a rotating rod, an anchor rod, a gear, an external gear ring, and a nut. The top end of the rotating rod is rotatably mounted in a circular slot on the lower surface of a second disc via a bearing, and the lower outer periphery of the rotating rod has an edge. The anchor rod has a sliding groove inside that matches the edge of the lower outer periphery of the rotating rod, and the anchor rod is slidably fitted onto the outer periphery of the rotating rod. The lower part of the outer periphery of the anchor rod has an external thread. The gear is fixedly fitted onto the upper part of the outer periphery of the rotating rod. The external gear ring is fixedly fitted onto the outer circumferential surface of the vertical pipe and meshes with the gear. The nut is fixed to the upper surface of the first disc and corresponds to a through hole on the first disc. The nut and the external thread on the outer periphery of the anchor rod form a threaded connection.

[0008] According to a water level monitoring device provided by the present invention, an annular cleaning brush is provided in the through hole opened on the first disc, which is suitable for cleaning the outer peripheral surface of the anchor rod passing through the through hole.

[0009] According to a water level monitoring device provided by the present invention, the adjusting mechanism includes an annular pressure block, an annular plate, a first vertical guide rod, a horizontal guide rod, a second vertical guide rod, and a connecting rod. The annular pressure block is fixedly sleeved on the upper part of the outer circumferential surface of the anchor rod; the annular plate is movably sleeved on the outer circumferential surface of the vertical pipe, and the anchor rod is movably inserted through the annular plate; the first vertical guide rod is movably inserted through the second disc, and the bottom end of the first vertical guide rod is fixedly connected to the annular plate; the first end of the horizontal guide rod is connected to the top end of the first vertical guide rod; the top end of the second vertical guide rod is connected to the second end of the horizontal guide rod; the first end of the connecting rod is hinged to the bottom end of the second vertical guide rod, and the second end of the connecting rod is hinged to the expansion support rod.

[0010] According to a water level monitoring device provided by the present invention, a tension spring is fitted on the first vertical guide rod, the first end of the tension spring abuts against the annular plate, and the second end of the tension spring abuts against the second disc.

[0011] According to a water level monitoring device provided by the present invention, a plurality of grooves are evenly distributed around the outer edge of the first disc, and a support shaft is fixedly connected between the inner walls of the two sides of the groove. A plurality of expansion rods of the plurality of expansion components are respectively rotatably sleeved on the support shaft in the groove. The second end of the connecting rod is hinged to the side of the expansion rod facing the vertical pipe, and a support rubber block is fixedly installed on the top of the side of the expansion rod facing away from the vertical pipe.

[0012] According to a water level monitoring device provided by the present invention, the height of the water inlet is located between the first disk and the second disk, and a filter cylinder is also fitted between the first disk and the second disk, the filter cylinder being located between the expansion support rod and the drilling and positioning assembly.

[0013] According to a water level monitoring device provided by the present invention, a plurality of frustum-shaped anti-slip protrusions are fixedly connected in an annular pattern on the lower surface of the first disk, and the diameter of the end of the frustum-shaped anti-slip protrusion connected to the first disk is greater than the diameter of the end away from the first disk.

[0014] According to a water level monitoring device provided by the present invention, the monitoring component further includes an audible and visual alarm and a broadcaster, the audible and visual alarm and the broadcaster being electrically connected to the PLC controller respectively, a U-shaped transparent protective plate being fixedly installed on the top of the vertical pipe, and the PLC controller, the display, the audible and visual alarm and the broadcaster being fixed inside the U-shaped transparent protective plate.

[0015] A battery box is fixedly installed on the top side of the vertical pipe, and a storage battery is fixedly installed inside the battery box. The PLC controller, the display, the audible and visual alarm and the announcer are all electrically connected to the storage battery.

[0016] According to a water level monitoring device provided by the present invention, the top of the vertical pipe and the U-shaped transparent protective plate are respectively provided with mounting holes, a positioning sleeve is inserted into the mounting hole, and a plurality of anti-wear balls are movably nested on the inner wall of the positioning sleeve, and the T-shaped guide rod is movably inserted between the plurality of anti-wear balls.

[0017] The water level monitoring device provided by this invention includes a vertical pipe as the main support, a floating component and a monitoring component disposed inside the vertical pipe, a protective component fitted outside the vertical pipe, and a drilling and positioning component and an expansion component arranged around the vertical pipe. By rotating the handle at the top of the vertical pipe, the drilling and positioning component is driven to rotate and drill downward into the ground to achieve four-point anchoring. During this process, the downward-moving drilling and positioning component pushes multiple expansion support rods outward through an adjustment mechanism, significantly increasing the bottom support area. When the water level in the tunnel rises, the water flows into the vertical pipe through the inlet after external filtration, pushing the float and float plate to rise, causing the ranging reference plate to rise synchronously. The laser ranging sensor detects the distance change between itself and the ranging reference plate in real time. The data is processed by the PLC controller, converted into a real-time water level, and displayed on the display. An alarm is triggered when the preset warning water level is reached. This invention effectively avoids interference from gravel and impurities in tunnels on the movement of the floating body by incorporating the floating monitoring system with an external protection and filtering structure, thus ensuring the continuity and accuracy of monitoring. The use of four-point synchronous rotary drilling anchoring combined with deployable expansion struts not only greatly improves the convenience and reliability of anchoring under complex ground conditions, but also significantly enhances the device's anti-overturning stability by actively increasing the support surface, making it particularly suitable for harsh working conditions such as underpass tunnels. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is one of the isometric structural schematic diagrams of the water level monitoring device provided by the present invention.

[0020] Figure 2 This is the second isometric structural schematic diagram of the water level monitoring device provided by the present invention.

[0021] Figure 3 This is a cross-sectional structural diagram of the water level monitoring device provided by the present invention.

[0022] Figure 4 yes Figure 3 An enlarged schematic diagram of the structure of part A.

[0023] Figure 5 yes Figure 3 An enlarged schematic diagram of the structure of part B.

[0024] Reference numerals: 1. Vertical pipe; 11. Handle lever; 12. Drainage filter plate; 13. Water inlet; 2. Floating assembly; 21. T-shaped guide rod; 22. Float plate; 23. Float ball; 24. Positioning sleeve; 25. Anti-wear ball; 3. Monitoring assembly; 31. Laser rangefinder sensor; 32. Rangefinder reference plate; 33. PLC controller; 34. Display; 35. Audible and visual alarm; 36. Broadcaster; 4. Protective assembly; 41. First disc; 411. Annular cleaning brush; 4 2. Second disc; 43. Protective cover; 5. Drilling and positioning assembly; 51. Rotating rod; 52. Anchor rod; 53. Gear; 54. External gear ring; 55. Nut; 6. Expansion assembly; 61. Expansion support rod; 62. Adjustment mechanism; 621. Annular pressure block; 622. Annular plate; 623. First vertical guide rod; 624. Horizontal guide rod; 625. Second vertical guide rod; 626. Connecting rod; 627. Tension spring; 7. Filter cylinder; 8. Frustum-shaped anti-slip protrusion; 9. U-shaped transparent protective plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] The following is combined Figures 1 to 5 The specific structure and working principle of the water level monitoring device of the present invention are described.

[0027] One embodiment of the present invention provides a water level monitoring device, combined with Figure 1 , Figure 2 and Figure 3As shown, the system includes a vertical pipe 1, a floating assembly 2, a monitoring assembly 3, a protective assembly 4, four sets of drilling and positioning assemblies 5, and multiple expansion assemblies 6. A handle 11 is fixed to the top of the outer periphery of the vertical pipe 1, a drainage filter plate 12 is installed at the bottom of the inner side of the vertical pipe 1, and a water inlet 13 is opened at the bottom of the outer periphery of the vertical pipe 1. The floating assembly 2 includes a T-shaped guide rod 21, a float plate 22, and a float 23. The T-shaped guide rod 21 passes through the top of the vertical pipe 1, the float 23 is located inside the vertical pipe 1, and the float plate 22 is connected to the bottom of the T-shaped guide rod 21 and located above the float 23. The monitoring assembly 3 includes a laser rangefinder 31, a ranging reference plate 32, a PLC controller 33, and a display 34. The laser rangefinder 31 is fixed to the top of the inner side of the vertical pipe 1, the ranging reference plate 32 is fixed to the float plate 22, and the PLC controller 33 and the display 34 are fixed to the top of the vertical pipe 1. The PLC controller 33 is connected to the laser rangefinder 31. 31 and display 34 are electrically connected; the protective component 4 includes a first disc 41, a second disc 42 and a protective cover 43. The first disc 41 is rotatably sleeved on the bottom of the outer periphery of the vertical pipe 1, and the second disc 42 and the protective cover 43 are rotatably sleeved on the middle of the outer periphery of the vertical pipe 1. The bottom of the protective cover 43 is connected to the second disc 42; four sets of drilling and positioning components 5 are evenly distributed around the outer periphery of the vertical pipe 1. One end of the drilling and positioning component 5 is movably set on the second disc 42, and the other end passes through the first disc 41. The drilling and positioning component 5 is engaged with the outer periphery of the vertical pipe 1 and is suitable for moving vertically under the rotation of the vertical pipe 1; the expansion component 6 includes an expansion support rod 61 and an adjustment mechanism 62. The bottom end of the expansion support rod 61 is hinged to the outer edge of the first disc 41. The adjustment mechanism 62 connects the drilling and positioning component 5 and the expansion support rod 61 and is suitable for adjusting the expansion support rod 61 to rotate along the hinge axis under the movement of the drilling and positioning component 5.

[0028] It is understood that the water level monitoring device of this embodiment mainly includes a vertical pipe 1 as the main support, a floating component 2 and a monitoring component 3 disposed inside the vertical pipe 1, a protective component 4 fitted outside the vertical pipe 1, and a drilling and positioning component 5 and an expansion component 6 disposed around the vertical pipe 1. Specifically, the top of the vertical pipe 1 is equipped with a handle 11, and the bottom has a water inlet hole 13 and a drainage filter plate 12 is installed; the floating component 2 is connected to the float plate 22 through the T-shaped guide rod 21, and the float ball 23 is suspended in the water inside the vertical pipe 1; the monitoring component 3 includes a laser rangefinder 31, a rangefinder reference plate 32 fixed on the float plate 22, and a PLC controller 33 and a display 34 for data processing and display; the protective component 4 consists of a first disc 41, a second disc 42 rotatably mounted on the vertical pipe, and a guard 43 connected to the second disc 42; four sets of drilling and positioning components 5 are evenly arranged in the circumference, and they mesh with the outside of the vertical pipe 1 for transmission; multiple expansion components 6 convert the vertical movement of the drilling and positioning components 5 into the unfolding or retracting movement of the expansion support rod 61 through the adjustment mechanism 62.

[0029] After the device is in place, rotating the handle 11 at the top of the vertical pipe 1 drives the drilling and positioning assembly 5 to rotate and drill downwards into the ground, achieving four-point anchoring. During this process, the downward-moving drilling and positioning assembly 5 pushes multiple expansion support rods 61 outwards through the adjustment mechanism 62, significantly increasing the bottom support area. When the water level in the tunnel rises, the water flows through the inlet hole 13 into the vertical pipe 1 after external filtration, pushing the float 23 and float plate 22 to rise, causing the ranging reference plate 32 to rise synchronously; the laser ranging sensor 31 detects the distance change between itself and the ranging reference plate 32 in real time, and the data is processed by the PLC controller 33, which converts it into a real-time water level and displays it on the display 34, triggering an alarm at the preset warning water level.

[0030] The water level monitoring device in this embodiment effectively avoids the interference of gravel and impurities in the tunnel on the movement of the floating body by incorporating the floating monitoring system and setting external protection and filtration structures, thus ensuring the continuity and accuracy of monitoring. The four-point synchronous rotary drilling anchoring combined with deployable expansion support rods not only greatly improves the convenience and reliability of anchoring under complex ground conditions, but also significantly enhances the device's anti-overturning stability by actively increasing the support surface, making it particularly suitable for harsh working conditions such as underpass tunnels.

[0031] In some embodiments of the water level monitoring device of the present invention, combined with Figure 3 and Figure 4 As shown, the drilling and positioning assembly 5 includes a rotating rod 51, an anchor rod 52, a gear 53, an external gear ring 54, and a nut 55. The top end of the rotating rod 51 is rotatably mounted in a circular slot on the lower surface of the second disc 42 via a bearing, and the lower outer periphery of the rotating rod 51 has an edge. The anchor rod 52 has a sliding groove inside that matches the edge of the lower outer periphery of the rotating rod 51, and the anchor rod 52 is slidably fitted onto the outer periphery of the rotating rod 51. The lower part of the outer periphery of the anchor rod 52 is provided with an external thread. The gear 53 is fixedly fitted onto the upper part of the outer periphery of the rotating rod 51. The external gear ring 54 is fixedly fitted onto the outer periphery of the vertical pipe 1 and meshes with the gear 53. The nut 55 is fixed to the upper surface of the first disc 41 and corresponds to the through hole opened on the first disc 41. The nut 55 and the external thread on the outer periphery of the anchor rod 52 form a threaded connection.

[0032] It is understandable that the drilling and positioning assembly 5 constitutes the core transmission structure for the device to achieve mechanical anchoring. In this embodiment, the drilling and positioning assembly 5 is mainly composed of a rotating rod 51, an anchor rod 52, a gear 53, an external gear ring 54, and a nut 55. The top of the rotating rod 51 is rotatably mounted on the bottom of the second disk 42 via a bearing, and its lower part is machined with a non-circular angular cross-section (for example, forming a square rod). The anchor rod 52 has a precisely fitted angular groove inside, allowing it to slide along the axial direction of the rotating rod 51 but not rotate relative to it. The lower outer surface of the anchor rod 52 is machined with external threads. The gear 53 is fixedly fitted onto the upper part of the rotating rod 51. The external gear ring 54 is fixedly mounted on the outer wall of the vertical tube 1 and meshes with each gear 53. The nut 55 is fixed on the first disk 41 and forms a threaded pair with the external threads of the anchor rod 51. Through the meshing transmission of the vertical tube 1, the external gear ring 54, and the gear 53, the rotational motion of the vertical tube is efficiently transmitted to each anchor rod 51.

[0033] When the operator rotates the vertical pipe 1, the external gear ring 54 fixed on it rotates synchronously, driving the four circumferentially distributed gears 53 and the rotating rod 51 to rotate. Since the anchor rod 52 is linked with the rotating rod 51 through the internal angular groove, the anchor rod 52 rotates accordingly; at the same time, the external thread at the lower part of the anchor rod 52 engages with the nut 55 fixed on the first disc 41, converting the rotational motion into a downward linear feed motion of the anchor rod 52, causing the tip of the anchor rod 52 to screw into the ground, achieving four-point synchronous anchoring. This embodiment transforms a single operation (rotating the vertical pipe 1) into the synchronous and stable drilling of multiple anchor rods 52 into the ground, which not only greatly reduces the anchoring difficulty in hard ground and improves installation efficiency, but also significantly enhances the overall stability of the device through four-point anchoring, effectively resisting the risk of tilting caused by water flow impact or accidental collision.

[0034] To further optimize the maintainability and reusability of anchor bolt 52, see further... Figure 4 As shown, an annular cleaning brush 411 is integrated into the through hole of the first disc 41. Specifically, the annular cleaning brush 411 is fixedly embedded in the through hole of the first disc 41 through which the anchor rod 52 passes. Its inner diameter is adapted to the outer diameter of the anchor rod 52. The bristles or elastic scraper tightly surround the outer circumference of the anchor rod 52, forming a complete annular cleaning interface, so that the anchor rod 52 must pass through the inner ring channel of the annular cleaning brush 411 every time it passes through the through hole.

[0035] As the anchor bolt 52 moves upward and passes through the through hole of the first disc 41 during the retrieval process, the dirt, debris, and other contaminants adhering to its surface come into contact with and rub against the annular cleaning brush 411. Through its physical scraping and sweeping action, the brush effectively peels off and removes most of the soil adhering to the threads and surface of the anchor bolt 52. This automatic cleaning action that accompanies the retrieval process of the anchor bolt 52 ensures that the anchor bolt 52 remains relatively clean after retrieval, avoiding problems such as thread jamming, component corrosion, or affecting the next anchoring depth caused by long-term soil adhesion. This significantly improves the ease of maintenance, operational reliability, and service life of the device.

[0036] In some embodiments of the water level monitoring device of the present invention, combined with Figure 3 and Figure 4 As shown, the adjustment mechanism 62 includes an annular pressure block 621, an annular plate 622, a first vertical guide rod 623, a horizontal guide rod 624, a second vertical guide rod 625, and a connecting rod 626. The annular pressure block 621 is fixedly sleeved on the upper part of the outer circumferential surface of the anchor rod 52; the annular plate 622 is movably sleeved on the outer circumferential surface of the vertical pipe 1, and the anchor rod 52 is movably inserted through the annular plate 622; the first vertical guide rod 623 is movably inserted through the second disc 42, and the bottom end of the first vertical guide rod 623 is fixedly connected to the annular plate 622; the first end of the horizontal guide rod 624 is connected to the top end of the first vertical guide rod 623; the top end of the second vertical guide rod 625 is connected to the second end of the horizontal guide rod 624; the first end of the connecting rod 626 is hinged to the bottom end of the second vertical guide rod 625, and the second end of the connecting rod 626 is hinged to the expansion support rod 61.

[0037] It is understandable that the adjustment mechanism 62 constitutes the core linkage system for realizing the automatic deployment and retraction of the expansion support rod 61. In this embodiment, the adjustment mechanism 62 adopts a precise mechanical transmission architecture: the annular pressure block 621 is fixed to the upper part of the anchor rod 52, and an annular plate 622 that can slide along the vertical tube 1 is provided below it; the lower end of the first vertical guide rod 623 is fixedly connected to the annular plate 622, and the upper end passes through the second disc 42 and is rigidly connected to the second vertical guide rod 625 through the horizontal guide rod 624; finally, the vertical movement is transmitted to the end that is hinged to the expansion support rod 61 through the connecting rod 626 hinged to the bottom end of the second vertical guide rod 625. This multi-rod linkage system makes the expansion support rod 61 rotate under the axial displacement of the anchor rod 52, so as to facilitate deployment or retraction.

[0038] Specifically, when the anchor rod 52 screws into the ground and moves downwards, the annular pressure block 621 fixed on it descends accordingly and presses against the annular plate 622, driving the first vertical guide rod 623 to move downwards synchronously. This downward movement is transmitted to the second vertical guide rod 625 through the horizontal guide rod 624, which in turn pushes the connecting rod 626 to make planar movement, forcing the expansion support rod 61 to extend outwards to a horizontal support state. This process achieves synchronous linkage between anchoring and support expansion, automatically expanding the bottom support area several times without additional operation, greatly enhancing the anti-overturning stability of the device under soft ground or water flow impact conditions, forming a virtuous working mechanism of "the more anchored, the more stable".

[0039] In some examples, the adjustment mechanism 62 further integrates an elastic reset element to optimize its automation performance. Specifically, a tension spring 624 is fitted on the first vertical guide rod 623. The upper end of the tension spring 624 directly abuts against the bottom of the second disc 42, while the lower end firmly abuts against the top of the annular plate 622, which can slide along the vertical tube 1. This ensures that the tension spring 624 is always in a pre-tightened or further stretched state, and its elastic force acts in the opposite direction to the downward direction of the annular plate 622, providing a reliable reset force source for the entire adjustment mechanism.

[0040] When the anchor bolt 52 moves downward and presses against the annular plate 622 via the annular pressure block 621, the tension spring 627 is stretched and stores elastic potential energy. When the anchoring operation is completed and the device needs to be retracted, as the anchor bolt 52 rises and the pressure of the annular pressure block 621 on the annular plate 622 is released, the previously stretched tension spring 627 releases its stored potential energy, pulling the annular plate 622 and the entire connected rod system (first vertical guide rod 623, horizontal guide rod 624, and second vertical guide rod 625) upward to reset. This action pulls the expansion support rod 61 inward through the connecting rod 626, causing it to automatically and reliably retract to its initial position beside the vertical pipe 1. This design achieves automatic reset and folding of the expansion support rod 61, significantly improving the convenience and efficiency of device retrieval, while avoiding the inconvenience of transportation and storage caused by the support rod protruding outward in the non-working state, enhancing the overall integration and practicality of the equipment.

[0041] In some embodiments of the water level monitoring device of the present invention, combined with Figure 2 and Figure 3 As shown, the outer edge of the first disk 41 has a plurality of grooves evenly distributed around it. A support shaft is fixedly connected between the inner walls of the two sides of the groove. The plurality of expansion rods 61 of the plurality of expansion components 6 are respectively rotatably sleeved on the support shaft in the groove. The second end of the connecting rod 626 is hinged to the side of the expansion rod 61 facing the vertical tube 1. A support rubber block is fixedly installed on the top of the side of the expansion rod 61 facing away from the vertical tube 1.

[0042] It is understood that in this embodiment, the mounting structure and end effector of the extended support rod 61 are specially designed to achieve a stable and reliable support function. Specifically, multiple grooves are uniformly machined circumferentially on the outer edge of the first disc 41, and a support shaft is fixedly installed in each groove; the extended support rod 61 is rotatably sleeved on the corresponding support shaft through the shaft hole at its root, thereby achieving a hinge connection with the first disc 41; the end of the connecting rod 626 is hinged to the rod body of the extended support rod 61 on the side near the vertical tube 1. In addition, a support rubber block is fixedly installed on the top of the extended support rod 61 on the side away from the vertical tube, serving as the direct component in contact with the ground.

[0043] When the adjusting mechanism 62 drives the connecting rod 626, the connecting rod 626 pushes or pulls the extended support rod 61 to rotate around its support shaft. During the deployment process, the extended support rod 61 flips outward until the support block at its top is flat against the ground. At this time, the support block provides excellent friction and cushioning by utilizing its material properties, ensuring the stability of the extended support. This embodiment not only transforms the deployment action of the support rod into a large-area reliable support for the ground through the lever principle, greatly enhancing the device's anti-overturning ability; its built-in support shaft structure and external support block are also optimized in terms of mechanical strength and ground adaptability, respectively, jointly ensuring the effectiveness and durability of the support action.

[0044] In some embodiments of the water level monitoring device of the present invention, see again Figure 3 As shown, the height of the water inlet hole 13 is located between the first disk 41 and the second disk 42. A filter cylinder 7 is also installed between the first disk 41 and the second disk 42. The filter cylinder 7 is located between the expansion support rod 61 and the drilling and positioning assembly 5.

[0045] Understandably, in this embodiment, a special filtration and protection structure is set up to address the environmental characteristics of water accumulation and impurities in the underpass tunnel. A cylindrical filter screen (filter cylinder 7) is fitted inside the annular space between the first disc 41 and the second disc 42 on the outside of the vertical pipe 1. The filter cylinder 7 is positioned to surround the water inlet hole 13 at the bottom of the vertical pipe 1, and is located between the inwardly contracting expansion support rod 61 and the downwardly pointing drilling and positioning assembly 5, forming a protected filtration chamber.

[0046] When the water level rises inside the tunnel, the accumulated water must first pass through the mesh of the filter cylinder 7 to reach the inlet 13 of the vertical pipe. During this process, solid impurities such as gravel and silt carried by the water flow are effectively intercepted on the outside of the filter cylinder. First, this fundamentally prevents solid impurities from entering the interior of the vertical pipe, avoiding blockage or damage to the floating components and drainage filter plates, and ensuring the long-term operational reliability of the core monitoring components. Second, integrating the filtration function with the external protective components results in a compact structure, eliminating the need for an additional independent filtration unit. Finally, the intercepted impurities accumulate around the device, facilitating subsequent centralized cleaning, while also preventing impurities from interfering with the movement of the drilling and positioning components, thus improving the overall environmental adaptability of the device.

[0047] In some embodiments of the water level monitoring device of the present invention, a plurality of frustum-shaped anti-slip protrusions 8 are fixedly connected in an annular pattern on the lower surface of the first disk 41 at equal intervals. The diameter of the end of the frustum-shaped anti-slip protrusion 8 connected to the first disk 41 is larger than the diameter of the end away from the first disk 41.

[0048] It is understood that the bottom structure of the first disk 41 in this embodiment has been specially designed to prevent slippage in order to enhance the operational stability of the device. Specifically, on the lower surface of the first disk 41, a plurality of frustum-shaped anti-slip protrusions 8 are uniformly fixedly installed along the circumferential direction. These protrusions have a unique geometric shape, with a larger diameter at the end connected to the disk and a smaller diameter at the free end facing the ground, forming a frustum structure that is wider at the top and narrower at the bottom.

[0049] When the device is placed on the ground and anchoring is performed, the operator rotates the vertical pipe 1 by using the handle 11. At this time, the smaller tip of the frustum-shaped anti-slip protrusion at the bottom of the first disc 41, under its own weight and downward pressure, will embed into the ground surface, while the larger base provides stable support. This unique frustum shape allows it to effectively "pierce" the ground to generate initial anchoring, and its conical structure also provides strong resistance to horizontal displacement. This ensures that the first disc 41 remains stable and does not rotate when the vertical pipe 1 is rotated for drilling and anchoring, thereby completely and effectively transmitting the rotational torque to the drilling and positioning assembly 5, significantly improving the efficiency and success rate of the anchoring operation, and fundamentally preventing anchoring failure caused by bottom slippage.

[0050] In some embodiments of the water level monitoring device of the present invention, combined with Figure 3 and Figure 5As shown, the monitoring component 3 also includes an audible and visual alarm 35 and a broadcaster 36. The audible and visual alarm 35 and the broadcaster 36 are electrically connected to the PLC controller 33. A U-shaped transparent protective plate 9 is fixedly installed on the top of the vertical pipe 1, and the PLC controller 33, display 34, audible and visual alarm 35, and broadcaster 36 are fixed inside the U-shaped transparent protective plate 9. A battery box is fixedly installed on the top side of the vertical pipe 1, and a storage battery is fixedly installed inside the battery box. The PLC controller 33, display 34, audible and visual alarm 35, and broadcaster 36 are all electrically connected to the storage battery.

[0051] It is understood that the monitoring component 3 in this embodiment integrates a multi-functional alarm module and an independent energy supply unit, forming a complete intelligent warning architecture. Specifically, a U-shaped transparent protective plate 9 is installed on the top of the vertical pipe 1, which centrally houses the PLC controller 33, display 34, audible and visual alarm 35, and voice broadcaster 36. These electronic components are all electrically connected to the PLC controller 33, forming a control core that integrates data processing, display, and alarm output. At the same time, a battery box is specially set on the side of the top of the vertical pipe 1, with a built-in battery to provide a continuous and stable power supply for the entire monitoring component, ensuring that it can still work normally in the event of an external power outage.

[0052] When the water level rises and triggers a preset alarm threshold, the PLC controller 33 simultaneously activates the audible and visual alarm 35 and the announcer 36. The audible and visual alarm 35 provides a strong visual and auditory warning through high-frequency flashing and ringing, while the announcer 36 clearly indicates the water level level or risk information via voice, achieving a dual alarm system. The U-shaped transparent protective plate 9 physically protects the internal precision electronic components from impacts and severe weather, while its transparency allows personnel to directly observe the data and alarm status on the display 34. Combined with the built-in battery, this design makes the device a fully self-sufficient monitoring station, eliminating the need for an external power source, greatly improving deployment flexibility, operational reliability, and the effectiveness of early warning in complex environments such as tunnels and underground engineering projects.

[0053] In some embodiments of the water level monitoring device of the present invention, see Figure 5 As shown, the top of the vertical tube 1 and the U-shaped transparent protective plate 9 are respectively provided with mounting holes. A positioning sleeve 24 is inserted into the mounting hole. Multiple anti-wear balls 25 are movably nested on the inner wall of the positioning sleeve 24. The T-shaped guide rod 21 is movably inserted between the multiple anti-wear balls 25.

[0054] It is understood that the guiding structure of the T-shaped guide rod 21 in this embodiment adopts a unique design with high precision and low friction. An insert hole is opened at the top of the vertical tube 1 and at the position corresponding to the U-shaped transparent protective plate 9. A positioning sleeve 24 is precisely inserted into the hole. Several anti-wear balls 25 are evenly nested in the inner wall of the positioning sleeve 24, and these balls together form a smooth annular guide rail. The rod body of the T-shaped guide rod 21 is precisely inserted into this guide rail composed of anti-wear balls 25, forming multi-point rolling contact.

[0055] When changes in water level cause the float 23 and float plate 22 to rise and fall, the T-shaped guide rod 21 moves vertically within the positioning sleeve 24. At this time, the anti-wear ball 25 rolls efficiently between the T-shaped guide rod 21 and the positioning sleeve 24, transforming traditional sliding friction into rolling friction. This significantly reduces frictional resistance and wear during guide rod movement, ensuring the floating component 2's sensitive response to minute changes in water level and improving monitoring accuracy. It also effectively avoids problems such as guide rod jamming or misalignment due to long-term use, greatly enhancing the long-term stability of water level monitoring and the service life of the device.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water level monitoring device, characterized in that, include: A vertical pipe (1) is provided with a handle (11) fixed at the top of its outer periphery, a drainage filter plate (12) is installed at the bottom of the inner side of the vertical pipe (1), and a water inlet hole (13) is provided at the bottom of the outer periphery of the vertical pipe (1). The floating assembly (2) includes a T-shaped guide rod (21), a float plate (22) and a float (23). The T-shaped guide rod (21) is inserted through the top of the vertical tube (1), the float (23) is located inside the vertical tube (1), and the float plate (22) is connected to the bottom of the T-shaped guide rod (21) and located above the float (23). The monitoring component (3) includes a laser rangefinder (31), a rangefinder reference plate (32), a PLC controller (33), and a display (34). The laser rangefinder (31) is fixed to the top of the inner side of the vertical tube (1), the rangefinder reference plate (32) is fixed to the floating plate (22), the PLC controller (33) and the display (34) are fixed to the top of the vertical tube (1), and the PLC controller (33) is electrically connected to the laser rangefinder (31) and the display (34) respectively. The protective component (4) includes a first disc (41), a second disc (42), and a shield (43). The first disc (41) is rotatably sleeved on the bottom of the outer periphery of the vertical pipe (1), and the second disc (42) and the shield (43) are rotatably sleeved on the middle of the outer periphery of the vertical pipe (1). The bottom of the shield (43) is connected to the second disc (42). Four sets of drilling and positioning components (5) are evenly distributed around the outer periphery of the vertical pipe (1). One end of each drilling and positioning component (5) is movably disposed on the second disc (42), and the other end is disposed on the first disc (41). The drilling and positioning component (5) is engaged with the outer periphery of the vertical pipe (1) and is suitable for moving vertically under the rotation of the vertical pipe (1). Multiple expansion components (6) are provided, each including an expansion support rod (61) and an adjustment mechanism (62). The bottom end of the expansion support rod (61) is hinged to the outer edge of the first disk (41). The adjustment mechanism (62) connects the drill positioning component (5) and the expansion support rod (61) and is adapted to adjust the expansion support rod (61) to rotate along the hinge axis when the drill positioning component (5) moves.

2. The water level monitoring device according to claim 1, characterized in that, The drilling and positioning assembly (5) includes: Rotating rod (51), the top end of the rotating rod (51) is rotatably mounted in a circular slot on the lower surface of the second disk (42) via a bearing, and the lower outer periphery of the rotating rod (51) has sharp edges; Anchor rod (52), the inside of the anchor rod (52) is formed with a sliding groove that matches the corner of the lower outer periphery of the rotating rod (51), the anchor rod (52) is slidably fitted on the outer periphery of the rotating rod (51), and the lower part of the outer periphery of the anchor rod (52) is provided with external thread; Gear (53) is fixedly sleeved on the upper part of the outer periphery of the rotating rod (51); The external gear ring (54) is fixedly sleeved on the outer circumferential surface of the vertical tube (1) and meshes with the gear (53); The nut (55) is fixed on the upper surface of the first disc (41) and corresponds to the through hole opened on the first disc (41). The nut (55) and the external thread on the outer periphery of the anchor rod (52) form a threaded connection.

3. The water level monitoring device according to claim 2, characterized in that, An annular cleaning brush (411) is provided in the through hole on the first disc (41) to clean the outer circumferential surface of the anchor rod (52) passing through the through hole.

4. The water level monitoring device according to claim 2, characterized in that, The adjustment mechanism (62) includes: An annular pressure block (621) is fixedly sleeved on the upper part of the outer circumferential surface of the anchor rod (52); The annular plate (622) is movably fitted onto the outer circumference of the vertical pipe (1), and the anchor rod (52) is movably inserted through the annular plate (622). The first vertical guide rod (623) is movably inserted through the second disc (42), and the bottom end of the first vertical guide rod (623) is fixedly connected to the annular plate (622); A horizontal guide rod (624), the first end of which is connected to the top end of the first vertical guide rod (623); The top end of the second vertical guide rod (625) is connected to the second end of the horizontal guide rod (624); The first end of the connecting rod (626) is hinged to the bottom end of the second vertical guide rod (625), and the second end of the connecting rod (626) is hinged to the expansion support rod (61).

5. The water level monitoring device according to claim 4, characterized in that, A tension spring (627) is fitted on the first vertical guide rod (623). The first end of the tension spring (627) abuts against the annular plate (622), and the second end of the tension spring (627) abuts against the second disc (42).

6. The water level monitoring device according to claim 4, characterized in that, The first disc (41) has a plurality of grooves evenly distributed around its outer circumference. A support shaft is fixedly connected between the inner walls of the two sides of the groove. The plurality of expansion rods (61) of the plurality of expansion components (6) are respectively rotatably sleeved on the support shaft in the groove. The second end of the connecting rod (626) is hinged to the side of the expansion rod (61) facing the vertical pipe (1). A support rubber block is fixedly installed on the top of the side of the expansion rod (61) facing away from the vertical pipe (1).

7. The water level monitoring device according to any one of claims 1 to 6, characterized in that, The height of the water inlet (13) is between the first disc (41) and the second disc (42). A filter cylinder (7) is also fitted between the first disc (41) and the second disc (42). The filter cylinder (7) is located between the expansion support rod (61) and the drilling and positioning assembly (5).

8. The water level monitoring device according to any one of claims 1 to 6, characterized in that, The lower surface of the first disk (41) is fixedly connected with a plurality of frustum-shaped anti-slip protrusions (8) at equal intervals in a ring. The diameter of the end of the frustum-shaped anti-slip protrusion (8) connected to the first disk (41) is greater than the diameter of the end away from the first disk (41).

9. The water level monitoring device according to any one of claims 1 to 6, characterized in that, The monitoring component (3) also includes an audible and visual alarm (35) and a broadcaster (36). The audible and visual alarm (35) and the broadcaster (36) are electrically connected to the PLC controller (33). A U-shaped transparent protective plate (9) is fixedly installed on the top of the vertical pipe (1). The PLC controller (33), the display (34), the audible and visual alarm (35) and the broadcaster (36) are fixed inside the U-shaped transparent protective plate (9). A battery box is fixedly installed on the top side of the vertical pipe (1), and a storage battery is fixedly installed inside the battery box. The PLC controller (33), the display (34), the audible and visual alarm (35) and the announcer (36) are all electrically connected to the storage battery.

10. The water level monitoring device according to claim 9, characterized in that, The top of the vertical tube (1) and the U-shaped transparent protective plate (9) are respectively provided with mounting holes. A positioning sleeve (24) is inserted into the mounting hole. Multiple anti-wear balls (25) are movably nested on the inner wall of the positioning sleeve (24). The T-shaped guide rod (21) is movably inserted between the multiple anti-wear balls (25).

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