Roadway water depth warning buoy

Abstract

The utility model relates to a roadway water depth warning buoy, belongs to warning device technical field, including reflector, counterweight seat and float, reflector is nested telescopic structure, including at least three sleeves, in the radial direction of reflector, from the outermost sleeve to the inner sleeve, the diameter of each sleeve decreases gradually, the inner sleeve can be telescopic relative to the outer sleeve along the axial direction, counterweight seat is fixedly arranged at the bottom of the outermost sleeve, and the water inlet hole is formed in the counterweight seat, the water inlet hole is used for connecting the inside of counterweight seat with the outside water environment, so that the water can enter the counterweight seat through the water inlet hole and flow into the containing space of each inner sleeve, the bottom of each inner sleeve in the outermost sleeve is correspondingly provided with the float, the float is used to produce buoyancy when the water level rises, drives the corresponding inner sleeve to be telescopic to the outer sleeve upwards, and the float of different inner sleeves can drive the corresponding sleeve in turn with the increasing water depth, so as to change the exposed mode of reflector and warn the water depth.

Description

Technical Field

[0001] This application belongs to the field of alarm device technology, specifically relating to a buoy for warning the depth of water accumulation in roadways. Background Technology

[0002] In low-lying sections of underground coal mine roadways, water accumulation can easily form due to geological seepage, drainage system malfunctions, or dust suppression spraying, affecting vehicle and personnel safety. Currently, most modern coal mines rely primarily on trackless rubber-tired vehicles for auxiliary transportation. During operation, deep water accumulation in the roadways often impedes vehicle passage. However, underground roadways are dark and visibility is poor, making it difficult for drivers to accurately judge the water depth. While drivers can wade through shallow water, deep water can easily cause the engine to stall, trapping the vehicle and potentially leading to secondary accidents such as collisions and drownings.

[0003] Existing methods for detecting water accumulation are not suitable for underground coal mine roadways and all have certain drawbacks: manual detection relies on the driver getting out of the vehicle to observe or using a probe to measure, which is inefficient and dangerous; electronic sensors are expensive and easily affected by the damp and dusty environment underground, causing them to fail; simple rulers require close-range viewing, are difficult to identify in the dark underground environment, and cannot provide dynamic early warnings. Utility Model Content

[0004] In view of this, this application provides a buoy for warning of water depth in roadways, the main purpose of which is to adjust the height of the light pole.

[0005] To achieve the above objectives, this application mainly provides the following technical solutions: This application provides a buoy for warning of water depth in roadways, comprising: A reflector, wherein the reflector is a nested telescopic structure comprising at least three sleeves, wherein in the radial direction of the reflector, from the outermost sleeve to the innermost sleeve, the diameter of each sleeve decreases sequentially, and there is a nested gap between adjacent sleeves for relative telescopic expansion and contraction, so that the inner sleeve can expand and contract relative to the outer sleeve in the axial direction. A counterweight base is fixedly installed at the bottom of the outermost sleeve. A water inlet hole is provided on the counterweight base. The water inlet hole is used to connect the internal and external water environment of the counterweight base, so that water can enter the counterweight base through the water inlet hole and flow into the accommodating space of each inner sleeve. The bottom of each inner sleeve within the outermost sleeve is provided with a float. The float is used to generate buoyancy as the water level rises, driving the corresponding inner sleeve to extend and retract upward relative to the outer sleeve. The floats of different inner sleeves can sequentially drive the corresponding sleeves to extend as the water depth increases, so as to warn of the water depth through the change in the exposed shape of the reflector.

[0006] Optionally, the outer peripheral surface of each sleeve is coated with a reflective material, and the reflective material on the outer peripheral surface of different sleeves has a different color.

[0007] Optionally, the reflective material on the outer periphery of each sleeve is a microprism-type reflective film, and the surface of the microprism-type reflective film is provided with a wear-resistant and scratch-resistant coating.

[0008] Optionally, the outer diameter of the float at the bottom of each inner sleeve is larger than the inner diameter of the top opening of its corresponding outer sleeve, so as to form a limit when the inner sleeve extends or retracts upward, preventing the float from extending to the top outside of the outer sleeve along with the inner sleeve.

[0009] Optionally, each of the floats is a ring structure, with a channel for water to flow between the inner and outer rings of the float.

[0010] Optionally, each of the floats is provided with a plurality of through water guide holes for the flow of accumulated water.

[0011] Optionally, the counterweight seat is provided with a filter grid at the water inlet, and the filter grid is detachably covered on the outside of the water inlet.

[0012] Optionally, the counterweight seat is disposed at the bottom of the outermost sleeve via a detachable connection structure, wherein the detachable connection structure includes any one of threaded connection, snap-fit ​​connection or bolt connection.

[0013] Optionally, the bottom of the counterweight is provided with an anti-slip and wear-resistant pad, and the lower surface of the anti-slip and wear-resistant pad is provided with anti-slip texture.

[0014] Optionally, a magnet is provided on the top end face of the innermost sleeve, and a reed switch is provided on the top inner wall of the outer sleeve directly adjacent to the innermost sleeve. The reed switch cooperates with the magnet to provide feedback on the corresponding water depth level through the on / off state of the reed switch when the innermost sleeve is extended or retracted to a preset position relative to its adjacent outer sleeve.

[0015] By employing the above technical solution, this application has at least the following beneficial effects: The roadway water depth warning buoy provided in this application, by setting up nested telescopic reflectors, a counterweight base with water inlets, and floats corresponding to each inner sleeve, can adapt to the harsh environment of dark, humid, and dusty underground coal mines. It does not require manual detection or electronic sensors. As water flows into the counterweight base and the inner sleeve's space through the water inlets, the floats drive the corresponding inner sleeves to extend and retract mechanically as the water level rises, making the reflectors appear in different exposed forms. This allows drivers to quickly identify the water depth from a distance, achieving dynamic early warning. It avoids the safety risks and inefficiency of manual detection, the high cost and easy failure of electronic sensors, and solves the shortcomings of simple rulers that require close-range viewing and are difficult to identify. It effectively ensures the safety of trackless rubber-wheeled vehicles and reduces secondary accidents such as vehicle stalling, collisions, and drowning. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a roadway water accumulation depth warning buoy according to an optional embodiment of this application; Figure 2 A cross-sectional view of a roadway water depth warning buoy according to an optional embodiment of this application; Figure 3 This is an application scenario diagram of a lane water depth warning buoy, which is an optional embodiment of this application.

[0017] The reference numerals in the attached figures are as follows: 1. Reflector; 11. Sleeve; 2. Counterweight base; 21. Water inlet; 3. Float. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0022] See also Figures 1 to 3 As shown, according to an embodiment of this application, a buoy for warning of water accumulation depth in a roadway is provided, including a reflector 1, a counterweight 2, and a float 3. The reflector 1 is a nested telescopic structure, including at least three sleeves 11. In the radial direction of the reflector 1, from the outermost sleeve 11 to the innermost sleeve 11, the diameter of each sleeve 11 decreases sequentially, and there is a nesting gap between adjacent sleeves 11 for relative telescopic expansion and contraction, so that the inner sleeve 11 can expand and contract relative to the outer sleeve 11 in the axial direction. The counterweight 2 is fixedly disposed at the bottom of the outermost sleeve 11, and the counterweight 2 is provided with a water inlet hole 2. 1. The water inlet 21 is used to connect the internal and external water environment of the counterweight 2, so that the water can enter the counterweight 2 through the water inlet 21 and flow into the accommodating space of each inner sleeve 11; each inner sleeve 11 in the outermost sleeve 11 is provided with a float 3 at the bottom. The float 3 is used to generate buoyancy when the water level rises, driving the corresponding inner sleeve 11 to extend and retract upward relative to the outer sleeve 11. The float 3 of different inner sleeves 11 can drive the corresponding sleeve 11 to extend in sequence as the water depth increases, so as to warn the water depth through the change of the exposed shape of the reflector 1.

[0023] The tunnel water depth warning buoy provided in the embodiments of this application, by setting up a nested telescopic reflector 1, a counterweight 2 with a water inlet 21, and a float 3 corresponding to each inner sleeve 11, can adapt to the harsh environment of dark, humid, and dusty underground coal mines. It does not require manual detection or electronic sensors. After the water flows into the space of the counterweight 2 and the inner sleeve 11 through the water inlet 21, the float 3 drives the corresponding inner sleeve 11 to extend and retract mechanically as the water level rises, so that the reflector 1 presents different exposed forms. This allows the driver to quickly identify the water depth from a distance and achieve dynamic warning. It avoids the safety risks and low efficiency of manual detection, the high cost and easy failure of electronic sensors, and solves the defects of simple rulers that require close viewing and are difficult to identify. It effectively ensures the safety of trackless rubber-wheeled vehicles and reduces secondary accidents such as vehicle stalling, collisions, and drowning.

[0024] The reflector 1, serving as a warning device, is composed of at least three sleeves 11 whose diameters decrease sequentially. The outer sleeve 11 is the largest, while the inner sleeves 11 decrease in size sequentially. Adjacent sleeves 11 have movable gaps, allowing the inner sleeves 11 to extend and retract relative to the outer sleeves 11, much like a telescope. Simultaneously, the sleeves 11 are reflective, illuminating the area in the dark underground environment for convenient long-distance observation.

[0025] Specifically, a guide bar is provided in the nesting gap between adjacent sleeves 11. The guide bar is fixedly set along the axial direction of the outer sleeve 11, and a guide groove adapted to the guide bar is opened on the outer wall of the inner sleeve 11 to restrict the circumferential rotation of the inner sleeve 11 relative to the outer sleeve 11, so as to ensure precise guidance of the telescopic movement.

[0026] The counterweight seat 2 is installed at the bottom of the outermost sleeve 11 to provide weight to the entire buoy, allowing it to stand stably in the waterlogged tunnel without tipping over. Meanwhile, the counterweight seat 2 has water inlet holes 21 on its side wall, allowing external water to flow into the counterweight seat 2 and then into the hollow spaces of the inner sleeves 11, ensuring that the water level inside the sleeves is consistent with the water level outside, thus providing a basis for the movement of the buoy 3.

[0027] Specifically, each inner sleeve 11 has a corresponding float 3 installed at its bottom. When the water level in the tunnel rises, the water enters the inside of the sleeve 11, and the float 3 is lifted upward by buoyancy, which will bring the corresponding inner sleeve 11 upward with it. The deeper the water, the more obvious the buoyancy effect, and the different inner sleeves 11 will be pulled out by the float 3 in sequence according to the increasing water level.

[0028] In some specific examples, each float 3 is a ring structure in which the inner and outer rings form a channel for water to flow; in other specific examples, each float 3 is cylindrical or spherical, and multiple water guide holes are provided on the float 3 that penetrate the float 3 along the axial direction of the reflector 1, and the water guide holes are used for water to flow.

[0029] Specifically, see Figure 3As shown, at least three sleeves 11 include a first sleeve 11, a second sleeve 11, and a third sleeve 11, with diameters decreasing sequentially in the radial direction of the reflector 1. When the water is clear and shallow, the second and third sleeves 11 extend a small length relative to the first sleeve 11. At this time, only the first sleeve 11 and part of the second sleeve 11 are exposed, resulting in a small number of exposed segments and a short total length. As the water depth increases and the water level rises, the second sleeve 11 extends completely relative to the first sleeve 11, and the third sleeve 11 also extends a small length relative to the second sleeve 11. At this time, the reflector 1 exposes the first sleeve 11, the complete second sleeve 11, and part of the third sleeve 11, increasing the number of exposed segments and the total length. Based on this, drivers can visually judge the water depth by observing the number of exposed sleeve segments or the change in the total length of the reflector 1 through headlight illumination, and thus quickly decide whether to proceed. Understandably, the more exposed sections of reflector 1 and the longer its total length, the deeper the water will be.

[0030] In some possible embodiments disclosed in this application, the outer peripheral surface of each sleeve 11 is coated with reflective material, and the reflective material on the outer peripheral surface of different sleeves 11 has different colors.

[0031] In this embodiment, different colored reflective materials are attached to the outer surface of each sleeve 11. Even if the water in the tunnel is sewage and it is difficult to see the number of exposed sleeve 11 segments and the overall length change, the reflective cylinder 1 can still be clearly illuminated by lights in the dark environment of the coal mine and present differentiated color markings. The driver can quickly judge the water depth by identifying the different exposed colors, avoiding the problem of single-form markings being difficult to identify in sewage environments. This further improves the reliability and convenience of water depth recognition, helps the driver make quick passage decisions, and ensures the safety of trackless rubber-wheeled vehicles in complex water scenarios.

[0032] In some specific examples, see Figure 3As shown, the reflector 1 comprises at least three sleeves 11 whose diameters decrease sequentially along their radial direction, namely the first sleeve 11, the second sleeve 11, and the third sleeve 11. The outer surface of each sleeve 11 is coated with a different colored reflective material. For example, the outer surface of the first sleeve 11 is coated with green reflective material, the second sleeve 11 with yellow reflective material, and the third sleeve 11 with red reflective material. It should be noted that the different reflective materials (green, yellow, and red) on each sleeve 11 not only maintain the long-distance visibility of the reflective function in dark underground environments but also establish a clear correlation between color gradations and water depth. When the water is shallow, only the green reflective first sleeve 11 is exposed; as the water deepens, the yellow reflective second sleeve 11 and the red reflective third sleeve 11 are successively exposed. Even if the water is sewage and the shape recognition fails, drivers can still quickly determine the depth of the water by the reflective color under the lights. Green corresponds to shallow water, yellow to medium water, and red to deep water. This not only avoids blind spots in sewage environments but also strengthens safety reminders through intuitive color warnings, helping drivers make quick passage decisions and further ensuring passage safety in complex waterlogged scenarios.

[0033] Specifically, to ensure that the buoy can always be clearly observed in the water, the total length of the buoy must be greater than the maximum possible water depth. Therefore, different numbers of sleeves 11 can be flexibly assembled to adapt to the water depth requirements in different scenarios.

[0034] In the above embodiments, the reflective material on the outer periphery of each sleeve 11 is a microprism-type reflective film, and the surface of the microprism-type reflective film is provided with a wear-resistant and scratch-resistant coating.

[0035] Here, each sleeve 11 uses a microprism-type reflective film as the reflective material on its outer periphery, and a wear-resistant and scratch-resistant coating is applied to its surface. This not only enhances the long-distance visibility of the buoy in the dark environment of the coal mine by taking advantage of the high reflectivity of the microprism-type reflective film, ensuring that the color markings are clearly distinguishable, but also resists the erosion of the harsh environment such as dust and water erosion in the mine through the wear-resistant and scratch-resistant coating, reducing wear and scratches on the reflective film, extending the service life of the reflective material and the stability of the reflective effect, ensuring that the buoy can accurately play its role in warning of water depth under complex working conditions for a long time, and improving the durability and reliability of the equipment.

[0036] In some possible embodiments disclosed in this application, the outer diameter of the float 3 at the bottom of each inner sleeve 11 is larger than the inner diameter of the top opening of its corresponding outer sleeve 11, so as to form a limit when the inner sleeve 11 extends upward, preventing the float 3 from extending to the top outside of the outer sleeve 11 along with the inner sleeve 11.

[0037] In this embodiment, by setting the outer diameter of the bottom float 3 of the inner sleeve 11 to be larger than the inner diameter of the top opening of the corresponding outer sleeve 11, a mechanical limit can be formed when the float 3 drives the inner sleeve 11 to extend and retract upwards. This effectively prevents the inner sleeve 11 from overextending and detaching from the outer sleeve 11. This ensures the integrity of the nested telescopic structure and the stability of the telescopic action, avoids the failure of the buoy warning function due to the sleeve 11 detaching, and eliminates the need for additional complex limiting components. This simplifies the structural design and reduces manufacturing costs. At the same time, it ensures that each inner sleeve 11 can extend sequentially and orderly according to the water depth, ensuring that the exposed shape or color marking of the reflector 1 can accurately correspond to the water depth and continuously and stably play a warning role. This further improves the durability and warning reliability of the buoy in the harsh environment of underground coal mines.

[0038] In some possible embodiments disclosed in this application, a filter grid is provided at the water inlet 21 of the counterweight 2, and the filter grid is detachably covered on the outside of the water inlet 21.

[0039] In this embodiment, by setting a detachable filter grid at the water inlet 21 of the counterweight 2, gravel, coal, debris, etc. in the roadway water can be effectively intercepted, preventing them from entering the counterweight 2 and the inner sleeve 11 through the water inlet 21. This avoids clogging the water inlet channel or jamming the telescopic structure of the float 3 and the sleeve 11, ensuring smooth water flow and the accuracy of the float 3 driving the sleeve 11 to extend and retract, and ensuring the stability of the buoy warning function. At the same time, the detachable design of the filter grid facilitates regular cleaning or replacement, adapts to the harsh environment of coal mines with many impurities, reduces maintenance difficulty, extends the service life of the equipment, and further improves the reliability and practicality of the buoy under complex working conditions.

[0040] In some specific examples, the filter screen has elastic buckles on its edge, and a corresponding groove is provided on the outer side of the water inlet 21 of the counterweight 2. The screen covers the water inlet 21 through the elastic engagement of the buckles and the groove. During installation, simply press the screen to make the buckles engage with the grooves and fix it in place. To disassemble, simply pinch the sides of the buckles and pry them outwards to remove them. No tools are required, facilitating quick and easy removal of debris from the well. In other specific examples, the filter screen has external threads on its outer ring, and internal threads are provided on the wall of the counterweight 2 on the outer side of the water inlet 21. The screen is fixed to the outer side of the water inlet 21 by threaded engagement. The threaded fit provides both sealing and stability, resisting water erosion. To disassemble, simply use a simple wrench to rotate the screen and remove it.

[0041] In some possible embodiments disclosed in this application, the counterweight 2 is disposed at the bottom of the outermost sleeve 11 by a detachable connection structure, which includes any one of threaded connection, snap-fit ​​connection or bolt connection.

[0042] In this embodiment, the counterweight 2 is set at the bottom of the outermost sleeve 11 through a detachable structure such as threaded connection, snap-fit ​​connection or bolt connection. This not only achieves a stable assembly of the counterweight 2 and the reflector 1, ensuring the stability of the overall buoy structure under conditions such as water erosion and minor collisions in the well, but also has the advantage of convenient disassembly and assembly. It is convenient to disassemble the buoy during transportation to reduce the space occupied. It also allows for the individual disassembly and replacement of the corresponding parts when the counterweight 2, reflector 1 or buoy 3 is damaged, without the need for overall scrapping, reducing maintenance costs and resource waste. At the same time, it adapts to the adjustment needs of counterweight weight under different roadway water accumulation scenarios, further improving the practicality, economy and adaptability of the buoy.

[0043] In some possible embodiments disclosed in this application, the bottom of the counterweight 2 is provided with an anti-slip and wear-resistant pad, and the lower surface of the anti-slip and wear-resistant pad is provided with anti-slip texture.

[0044] In this embodiment, by setting an anti-slip and wear-resistant pad with anti-slip texture at the bottom of the counterweight seat 2, the anti-slip texture can increase the friction between the counterweight seat 2 and the bottom of the tunnel, effectively preventing the buoy from shifting or tipping over under the impact of water flow or vehicle traffic, ensuring that the buoy is always in a stable warning position. At the same time, the anti-slip and wear-resistant pad can resist the wear of gravel and coal slag on the bottom of the tunnel and the erosion of water accumulation, extending the service life of the counterweight seat 2. It also avoids the impact damage caused by hard contact between the counterweight seat 2 and the bottom surface, further improving the stability, durability and warning reliability of the buoy in the complex terrain and harsh environment of the coal mine.

[0045] In some specific examples, the anti-slip and wear-resistant mat is made of rubber with a diamond-shaped anti-slip pattern; in other specific examples, the anti-slip and wear-resistant mat is made of polyurethane with a strip-shaped anti-slip pattern.

[0046] In some possible embodiments disclosed in this application, the top end face of the innermost sleeve 11 is provided with a magnet, and the top inner wall of the outer sleeve 11 directly adjacent to the innermost sleeve 11 is provided with a reed switch. The reed switch cooperates with the magnet to provide feedback on the corresponding water depth level through the on / off state of the reed switch when the innermost sleeve 11 is extended or retracted to a preset position relative to its adjacent outer sleeve 11.

[0047] In this embodiment, a magnet is installed on the top end face of the innermost sleeve 11, and a reed switch is correspondingly installed on the inner wall of the top of the directly adjacent outer sleeve 11. By utilizing the cooperation of the magnet and the reed switch, the water depth level can be fed back through the on / off state of the reed switch when the innermost sleeve 11 is extended or retracted to a preset position. This not only realizes the automated signal feedback of water depth, making up for the shortcomings of purely mechanical warnings that cannot transmit information remotely, but also facilitates the real-time monitoring of water accumulation in the roadway by the backend. Furthermore, the simple structure, moisture resistance, and dust resistance of the reed switch make it suitable for the harsh environment of underground coal mines. It can accurately trigger depth level feedback without complex electronic components. At the same time, it forms a double guarantee with the shape and color warning of the reflector 1, further improving the comprehensiveness and reliability of water depth warning, helping managers to respond quickly and ensuring the safety of underground passage.

[0048] In the case where the reflector 1 is composed of a first sleeve 11, a second sleeve 11 and a third sleeve 11 with successively smaller diameters, the magnet is installed at the top of the third sleeve 11 and extends and retracts with the third sleeve 11. The reed switch is installed on the inner side of the top of the second sleeve 11 and does not extend and retract with the third sleeve 11.

[0049] Specifically, when the water depth is shallow, the third sleeve 11 is not extended or only slightly extended. At this time, the magnet and the reed switch are close together, and the magnetic field generated by the magnet is sufficient to trigger the reed switch to the closed state, corresponding to the shallow water level. As the water depth continues to increase, the third sleeve 11 is driven upward by the float 3 until it rises to a preset position. This preset position is the critical position where the reed switch is completely out of the magnetic field range of the magnet. At this time, the magnet moves away from the reed switch along with the third sleeve 11, the magnetic field disappears, and the reed switch returns to the open state, corresponding to the deep water level. It should be noted that the on / off state of the reed switch can be converted into an electrical signal, which can be transmitted to the downhole control room or remote terminal through a wire.

[0050] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0051] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A buoy for warning of water depth in roadways, characterized in that, include: A reflector, wherein the reflector is a nested telescopic structure comprising at least three sleeves, wherein in the radial direction of the reflector, from the outermost sleeve to the innermost sleeve, the diameter of each sleeve decreases sequentially, and there is a nested gap between adjacent sleeves for relative telescopic expansion and contraction, so that the inner sleeve can expand and contract relative to the outer sleeve in the axial direction. A counterweight base is fixedly installed at the bottom of the outermost sleeve. A water inlet hole is provided on the counterweight base. The water inlet hole is used to connect the internal and external water environment of the counterweight base, so that water can enter the counterweight base through the water inlet hole and flow into the accommodating space of each inner sleeve. The bottom of each inner sleeve within the outermost sleeve is provided with a float. The float is used to generate buoyancy as the water level rises, driving the corresponding inner sleeve to extend and retract upward relative to the outer sleeve. The floats of different inner sleeves can sequentially drive the corresponding sleeves to extend as the water depth increases, so as to warn of the water depth through the change in the exposed shape of the reflector.

2. The tunnel water depth warning buoy according to claim 1, characterized in that, Each of the sleeves has a reflective material attached to its outer peripheral surface, and the reflective material on the outer peripheral surfaces of different sleeves has a different color.

3. The tunnel water depth warning buoy according to claim 2, characterized in that, The reflective material on the outer periphery of each sleeve is a microprism-type reflective film, and the surface of the microprism-type reflective film is provided with a wear-resistant and scratch-resistant coating.

4. The tunnel water depth warning buoy according to claim 1, characterized in that, The outer diameter of the float at the bottom of each inner sleeve is larger than the inner diameter of the top opening of its corresponding outer sleeve, so as to form a limit when the inner sleeve extends or retracts upward, preventing the float from extending out to the top outside of the outer sleeve along with the inner sleeve.

5. The tunnel water depth warning buoy according to claim 4, characterized in that, Each of the aforementioned floats has a ring structure, and a channel for water to flow is formed between the inner and outer rings of the float.

6. The tunnel water depth warning buoy according to claim 4, characterized in that, Each of the aforementioned floats has multiple through-holes for allowing water to flow through.

7. The tunnel water depth warning buoy according to claim 1, characterized in that, The counterweight seat is provided with a filter grid at the water inlet, and the filter grid is detachably covered on the outside of the water inlet.

8. The tunnel water depth warning buoy according to claim 1, characterized in that, The counterweight seat is disposed at the bottom of the outermost sleeve via a detachable connection structure, which includes any one of threaded connection, snap-fit ​​connection or bolt connection.

9. The tunnel water depth warning buoy according to claim 1, characterized in that, The bottom of the counterweight is provided with an anti-slip and wear-resistant pad, and the lower surface of the anti-slip and wear-resistant pad is provided with anti-slip texture.

10. The tunnel water depth warning buoy according to claim 1, characterized in that, The top end face of the innermost sleeve is provided with a magnet, and the top inner wall of the outer sleeve directly adjacent to the innermost sleeve is provided with a reed switch. The reed switch cooperates with the magnet to provide feedback on the corresponding water depth level through the on / off state of the reed switch when the innermost sleeve is extended or retracted to a preset position relative to its adjacent outer sleeve.

Images