Automatic water blocking device for basement entrance

Abstract

The application relates to an automatic water blocking device for a cave entrance, which is suitable for flood prevention operation of a large cave entrance in a deep-sea island reef and comprises a mounting seat provided with a first limiting part and a sliding track, a water blocking plate rotatably installed on the mounting seat through a water blocking rotating shaft, a supporting structure comprising a telescopic rod and a sliding block, the telescopic rod being rotatably connected with the water blocking plate and the sliding block at two ends in the telescopic direction, the sliding block being slidably arranged in the sliding track, an elastic piece arranged in the sliding track, the two ends of the elastic piece in the elastic telescopic direction being respectively abutted against the inner wall of the end of the sliding track and the sliding block, and a first driver suitable for driving the sliding block to slide in the sliding track and driving the telescopic rod to lift or lower the water blocking plate. Compared with the existing water blocking structure, the application reduces the dependence of the cave flood prevention on manual work, the device can not only resist the impact of more turbulent water flow under storms or extreme natural disasters but also reduce the manual investment in the silt cleaning process.

Description

Technical Field

[0001] This application relates to the field of mechanical structure technology, and in particular to an automatic water-blocking device for a basement entrance. Background Technology

[0002] Islands and reefs, as unique geographical units in the ocean, possess extremely important strategic significance. They not only serve as forward observation posts and maritime operational strongholds but also play a role in strategic deterrence and checks and balances. Large underground storage facilities on islands and reefs are often used to store vital strategic materials such as military equipment, ammunition, food, and fresh water, and can also serve as refuge sites for island and reef personnel in emergencies.

[0003] However, due to the complex and harsh geographical environment of the deep sea, islands and reefs often face marine disasters such as typhoons and storm surges. The giant waves and heavy rainfall brought by these disasters can cause a large amount of seawater to surge towards the islands and reefs in a short period of time. When there are no effective water-blocking measures at the entrance of the underground reservoir, seawater can backflow into the reservoir, posing a serious threat to the equipment, materials, and the lives of personnel inside.

[0004] Urban flooding is a frequent occurrence, posing a serious threat to people's lives and property. The same applies to underground flood control structures on islands. Because underground reservoirs are entirely located underground, large influxes of water during floods can severely threaten their safety. However, existing flood-control structures for these reservoirs typically rely on scattered, manually piled sandbags, which are highly dependent on manual labor. Once a disaster risk is detected, personnel must be mobilized to move the sandbags, resulting in low response efficiency during extreme weather. Furthermore, flood control operations are physically demanding and can easily delay effective flood control measures.

[0005] Therefore, how to reduce the heavy reliance on manual labor in the waterproofing structure of basements has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] To reduce the reliance on manual labor in the waterproofing structure of basements, this application provides an automatic water-blocking device for basement entrances. This device can not only withstand the impact of more turbulent water flows under storms or extreme natural disasters, but also reduce the manpower input in the process of clearing silt. It is suitable for basement entrances in areas with high silt content and frequent floods, such as deep islands and reefs, to prevent water from flowing into the basement and threatening the safety of people's lives and property or the deployment and use of strategic equipment on islands and reefs.

[0007] To achieve the objective of this invention, an automatic water-blocking device for a basement entrance is provided, comprising:

[0008] The mounting base is provided with a first limiting part and a sliding rail;

[0009] A water baffle plate, which is rotatably mounted on the mounting base via a water baffle pivot.

[0010] The support structure includes a telescopic rod and a slider. The two ends of the telescopic rod along its telescopic direction are rotatably connected to the baffle plate and the slider, respectively. The slider is slidably disposed in the sliding track, and the sliding direction is perpendicular to the rotation axis of the baffle plate at the baffle pivot.

[0011] An elastic element is disposed within the sliding track. The two ends of the elastic element along its elastic extension direction abut against the inner wall of the end of the sliding track and the slider, respectively, and the elastic element is compressed in the initial state.

[0012] The first actuator is adapted to drive the slider to slide within the sliding track. When the water level at the basement entrance reaches a first predetermined condition, the first actuator drives the slider through the elastic element to raise the water baffle and abut against the first limiting part. When the water level at the basement entrance reaches a second predetermined condition, the first actuator drives the slider to lower the water baffle to be parallel to the basement entrance ground.

[0013] This application applies to water-blocking devices used as entrances to medium to large-sized underground garages, particularly suitable for garage entrances in areas prone to flooding, such as deep-sea islands and reefs. This application utilizes an elastic element and a first actuator to mutually press against each other, jointly controlling the position of a slider in a sliding track, thereby changing the opening and closing state of the water-blocking plate. The first actuator compresses the elastic element, accumulating elastic potential energy in a compressed state, locking the slider and preventing it from sliding further. When there is no flooding in the garage, the water-blocking plate is flush with the ground, ensuring normal passage for pedestrians and vehicles at the garage entrance. The first actuator then releases the locking control of the slider, releasing the elastic potential energy of the compressed elastic element. The elastic reset thrust causes the slider to slide, and the water-blocking plate rotates and stands upright to block water, thus preventing flooding.

[0014] Compared to manually moving and piling sandbags at the reservoir inlet after a flood is detected, and then removing the sandbags after the flood season, this application allows for the automatic opening and closing of the water-blocking device at the reservoir inlet by operating the first drive unit after a flood is detected or after the flood season has ended. This reduces reliance on manual labor, lowers the intensity of manual work, and prevents delays in flood control work due to low efficiency of manual response caused by extreme weather. Attached Figure Description

[0015] Figure 1 This invention provides a schematic diagram of the structure of an automatic water-blocking device for a basement entrance according to an embodiment of this application.

[0016] Figure 2 Show Figure 1 A schematic diagram of the automatic water-blocking device at the basement entrance in the embodiment when the water-blocking plate is erected to block water;

[0017] Figure 3 Show Figure 1Schematic diagram of the automatic water-blocking device at the basement entrance when the water-blocking plate is closed and normal passage is allowed;

[0018] Figure 4 This invention provides a schematic diagram of the structure of an automatic water-blocking device for a basement entrance according to an embodiment of this application.

[0019] Figure 5 Show Figure 4 A partial enlarged view of the automatic water-blocking device at the entrance of the basement;

[0020] Figure 6 This invention provides a schematic diagram of the structure of an automatic water-blocking device for a basement entrance according to an embodiment of this application.

[0021] Figure 7 This invention provides a schematic diagram of the structure of an automatic water-blocking device for a basement entrance according to an embodiment of this application.

[0022] Figure 8 This diagram illustrates the structure of the automatic water-blocking device at the basement entrance when the water-blocking plate is closed and normal passage is allowed, according to an embodiment of this application.

[0023] Figure 9 Show Figure 8 A partial enlarged view of the automatic water-blocking device at the entrance of the basement;

[0024] Figure 10 Show Figure 8 A partial enlarged view of the automatic water-blocking device at the entrance of the basement;

[0025] Figure 11 Show Figure 8 A partial enlarged view of the automatic water-blocking device at the entrance of the basement;

[0026] Figure 12 Show Figure 8 A partial enlarged view of the automatic water-blocking device at the entrance of the basement;

[0027] Figure 13 A schematic diagram of the structure of the automatic water-blocking device at the basement entrance according to an embodiment of this application is shown.

[0028] Marked in the image:

[0029] 100 water baffle, 110 water baffle shaft, 120 trench, 200 mounting base, 210 first limiting part, 220 water storage tank, 222 gate, 223 gate limiting plate, 224 second rope, 225 second drive shaft, 230 drainage pipe, 240 cover plate, 250 filter, 260 sliding rail, 270 slider, 271 first drive shaft, 272 first rope, 273 first spring, 300 first liquid level sensor, 400 telescopic rod, 410 locking ball, 500 side wall of basement entrance. Detailed Implementation

[0030] The various exemplary embodiments, features, and aspects of this application will be described in detail below with reference to the accompanying drawings. Furthermore, numerous specific details are set forth in the following detailed description to better illustrate this application. Those skilled in the art will understand that this application can be practiced without certain specific details. In some instances, methods and means well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0031] This application provides an automatic water-blocking device for a basement entrance, comprising:

[0032] Mounting base 200, the mounting base 200 is provided with a first limiting part 210, a sliding rail 260 and a first connecting part;

[0033] A water baffle 100 has a second connecting part on one plate-shaped side. One end of the water baffle 100 is rotatably connected to the first connecting part, and the second connecting part is close to the opposite end of the water baffle 100.

[0034] The support structure includes a telescopic rod 400 and a slider 270. The two ends of the telescopic rod 400 along its extension direction are rotatably connected to the second connecting part and the slider 270, respectively. The rotational axes of the two ends of the telescopic rod 400 and the rotational axis of the baffle plate 100 at the first connecting part are parallel to the horizontal plane and parallel to the ground at the basement entrance. The slider 270 is slidably connected to a sliding track 260 and slides along a straight line on the sliding track 260. The sliding direction of the slider 270 intersects the rotational axis of the baffle plate 100 at the first connecting part.

[0035] The elastic element is located inside the sliding rail 260, and its two ends along its elastic extension and contraction direction are connected to the side wall of the sliding rail 260 and the slider 270, respectively.

[0036] The first actuator is used to drive the slider 270 to slide within the sliding track 260. The actuator drives the slider 270 to slide so that the baffle 100 rotates to be parallel to the ground at the basement entrance, locking the slider 270 so that it no longer slides. At this time, the elastic element is compressed and contracts. When water needs to be blocked, the first actuator releases the lock on the slider 270. The elastic element is no longer subjected to the compressive force applied to the slider 270 by the first actuator. The elastic element generates an elastic force to restore its natural extension length. Driven by the elastic force of the elastic element resetting, the slider 270 slides within the sliding track 260, and the baffle 100 rotates until it is perpendicular to the ground at the basement entrance. At this time, the baffle 100 abuts against and fits against the first limiting part 210, which is located on the rear side of the rotation direction of the baffle 100.

[0037] This application is applicable to water-blocking devices used as entrances to medium to large-sized underground garages, especially those in areas prone to flooding, such as deep-sea islands and reefs. This application utilizes an elastic element and a first actuator to mutually press against each other, jointly controlling the position of the slider 270 within the sliding track 260, thereby changing the opening and closing state of the water-blocking plate 100. The first actuator compresses the elastic element, accumulating elastic potential energy and locking the slider 270 to prevent further sliding. When there is no flooding in the garage, the water-blocking plate 100 is flush with the ground, ensuring normal passage for pedestrians and vehicles at the garage entrance. The first actuator then releases the locking control of the slider 270, releasing the elastic potential energy of the compressed elastic element. The elastic reset thrust causes the slider 270 to slide, and the water-blocking plate 100 rotates and stands upright to block water, thus preventing flooding.

[0038] Compared to manually moving and piling sandbags at the reservoir inlet after a flood is detected, and then removing the sandbags after the flood season, this application allows for the automatic opening and closing of the water-blocking device 100 at the reservoir inlet by operating the first drive unit after a flood is detected or after the flood season has ended. This reduces reliance on manual labor, lowers the intensity of manual work, and prevents delays in flood control work due to low efficiency of manual response caused by extreme weather.

[0039] Furthermore, this application utilizes the elastic force of an elastic element that accumulates elastic potential energy through compression to drive the slider 270 to slide. This force is transmitted to the baffle 100 via the telescopic rod 400, lifting and erecting the baffle 100. Compared to directly pushing the baffle 100 with a hydraulic rod, the momentary thrust at the point of contact between the baffle 100 and the first limiting part 210 is too large. The impact force can easily damage the baffle 100 and the first limiting part 210, potentially breaking the baffle 100 directly and pushing the first limiting part 210 away from the mounting base 200 and the left / right walls of the basement entrance, causing the first limiting part 210 to fail. Alternatively, the connection between the baffle 100 and the entrance wall may be insufficiently sealed, leading to rainwater leakage and liquid accumulation. Even if a single momentary impact does not directly cause serious consequences, it will shorten the service life of the equipment. This application does not use a direct linear displacement hydraulic rod to push the baffle plate 100. Instead, it slowly releases the elastic potential energy of the elastic element through the first rope 272. Taking the first spring 273 as an example, during the process of the first rope 272 being extended at a constant speed, the change in the elastic force of the first spring follows Hooke's Law. The instantaneous trend of the elastic force is as follows: at the initial unlocking moment, the deformation of the first spring 273 under pressure is the largest, and the elastic force is the largest; when reset or weighed, the deformation decreases linearly with the side length of the unfolded length of the first rope 272, and the elastic force also decreases linearly; after the first spring 273 is reset, the deformation is zero, the first spring 273 returns to its natural length, and the elastic force disappears. Therefore, the deformation of the elastic element under pressure gradually decreases, and the elastic force gradually decreases as well. Thus, during the process of the baffle plate 100 rotating and standing up, the initial tangential force is the largest, and then decreases. Before the baffle plate 100 contacts the first limiting part 210, the impact force toward the first limiting part 210 is infinitesimally small, which can ensure the stability of the first limiting part 210 and reduce the mutual wear caused by the instantaneous impact between the baffle plate 100 and the first limiting part 210. Under the premise of ensuring limiting and preventing leakage, the service life of the equipment can be extended.

[0040] In one possible implementation, the mounting base 200 is further provided with a drainage structure. A water-blocking rotating shaft 110 is provided at the first connecting part of the mounting base 200. The water-blocking rotating shaft 110 rotates around its own axis on the mounting base 200. The water-blocking plate 100 is rotatably connected to the first connecting part through the water-blocking rotating shaft 110. Along the radial direction of the water-blocking rotating shaft 110, the water inlet of the drainage structure and the drainage rotating shaft are arranged adjacent to each other. The water outlet of the drainage structure is connected to the common drainage pipe 230.

[0041] In one possible implementation, the drainage structure includes a water storage tank 220. The mounting base 200 is provided with a first preset cavity as the water storage tank 220. The side wall of the water storage tank 220 is provided with an inlet and an outlet. When the baffle plate 100 is rotated to be parallel to the ground at the entrance of the basement, the baffle plate 100 fits against the side wall of the mounting base 200 and covers the inlet of the water storage tank 220.

[0042] The interior of the water storage tank 220 is prismatic, preferably quadrangular. An inlet for the water storage tank 220 is located on the top surface of the prismatic tank, and the bottom surface of the prismatic tank is inclined. That is, the inner wall of the water storage tank 220 away from its inlet has an inclined surface, which is inclined to the radial plane of the prismatic structure. The outlet of the water storage tank 220 is located near the end of the inclined surface away from the inlet. A gate is provided at the outlet of the water storage tank 220 to prevent backflow of water from the public drainage pipe 230 during extreme weather conditions, which could affect the safety of people and property within the basement and its strategic layout.

[0043] The prism structure should originally have equal areas on its several sides, but due to the inclination of the inclined surface, the areas of the sides are no longer consistent. The water outlet is positioned near the edge between the side with the largest area and the inclined surface, so the water outlet can be located on the side with the largest area. Preferably, the entire water storage tank 220 is located outside the basement, with the side of the inclined surface tilting downwards facing outwards from the basement and the side of the inclined surface tilting upwards facing inwards from the basement.

[0044] The automatic water-blocking device at the basement entrance is pre-embedded underground at the basement entrance. The first connecting part is located at the ground level, while the first liquid level sensor 300 and the first limiting part 210 extend from the ground. As long as it is installed near the opposite ends of the entrance (left and right sides, the entrance and exit directions of the basement entrance are defined as front and back, the direction of gravity is up and down, and the axis perpendicular to front and back and up and down is left and right), it does not obstruct traffic at the entrance. The mounting base 200 is buried underground. When the water-blocking plate 100 rotates to be parallel to the ground at the basement entrance, the water-blocking plate 100 is flush with the ground level. Since the water-blocking plate 100 covers the inlet of the water storage tank 220 at this time, the inlet of the water storage tank 220 is located above the water storage tank 220. The inlet and outlet of the water storage tank 220 are respectively located near the opposite ends of the water storage tank 220 (first preset cavity), so the outlet of the water storage tank 220 is located below the water storage tank 220.

[0045] When pre-installing an automatic water-blocking device at the entrance of the basement, it is important to ensure that the axial direction of the prism structure of the water storage tank 220 is aligned with the direction of gravity. The sediment that settles and accumulates on the bottom surface of the prism will flow under the influence of gravity and water flow to the outlet of the water storage tank 220, which is located further down on the inclined surface of the bottom surface, and will be directly washed away by the water flow. This can reduce the accumulation of sediment in the water storage tank 220, reduce the cost of manually cleaning up the silt, reduce reliance on manual labor, and reduce the intensity of manual labor.

[0046] This application enables automatic sand removal during flood control and after the receding of accumulated water. It can not only withstand the impact of more turbulent water flow under storms or extreme natural disasters, but also reduce the manpower input in the process of silt removal. It is suitable for placement at the entrance of the reservoir in areas such as deep islands and reefs where floods are frequent and the water has a large silt content. It can effectively prevent water from flowing into the reservoir and reduce the threat to the safety of people's lives and property or the deployment and use of strategic equipment on the islands and reefs.

[0047] The reservoir 220 is also equipped with a second actuator for driving the gate switch of the reservoir 220. A second liquid level sensor is installed inside the reservoir 220 to detect the water level information within the reservoir 220. The output terminal of the second liquid level sensor is electrically connected to the second actuator. Preferably, the outlet of the reservoir 220 is provided with a switch rail, and the gate of the reservoir 220 is installed within the switch rail, with the gate slidably connected to the switch rail. The gate controls the opening and closing of the reservoir 220's gate by sliding displacement to cover, partially cover, or completely not cover the outlet of the reservoir 220.

[0048] This application does not specifically limit the shape and structure of the switch track, as long as it can restrict the displacement direction of the gate, ensure the opening and closing of the gate, realize the smooth flow and interception of water, and achieve the functions of drainage and water storage. Preferably, the sliding direction of the gate is perpendicular to the horizontal plane, that is, perpendicular to the ground plane of the basement entrance. A gate limiting plate 223 is set on the outside of the outlet of the water storage tank 220. The gate limiting plate 223 also has a water outlet for drainage of the water storage tank 220 through it. The water outlet and the water outlet of the water storage tank 220 are matched and set opposite to each other. The gate is generally in the shape of a flat plate. A preset sliding gap matching the gate is provided between the gate limiting plate 223 and the outer wall of the water outlet of the water storage tank 220. The side wall of the gate limiting plate 223 and the outer wall of the water outlet of the water storage tank 220 form a switch track. The gate is installed in the preset sliding gap, and the two sides of the plate-shaped gate are respectively attached to the side wall of the gate limiting plate 223 and the outer wall of the water outlet of the water storage tank 220.

[0049] The drive end of the second actuator is connected to the gate and is used to drive the gate to slide within the switching track. The second actuator is equipped with a second transmission component, preferably a second rope 224. The second actuator is a winding machine, suitable for driving its own drive shaft to rotate. One end of the second rope 224 is connected to the drive shaft of the second actuator, and the other end is fixedly connected to the gate. The second actuator winds up and unwinds the second rope 224 by rotating its own drive shaft, thereby changing the unfolded length of the second rope 224 and thus changing the relative distance between the gate and the drive shaft of the second actuator. Since the second actuator is fixedly installed on the mounting base 200 and will not shift, and the gate is slidably connected to the switching track of the mounting base 200, the second actuator can drive the gate to slide, thereby controlling the opening and closing of the gate.

[0050] This application utilizes a 220-cell reservoir for drainage and also allows for the closure of sluice gates to collect and reuse rainwater, such as for greening irrigation, thus avoiding resource waste. The sluice gates limit the drainage flow, and their temporary rainwater storage function smooths out peak flows, converting large flows into smaller, continuous discharges, matching the capacity of the public drainage network and preventing urban flooding caused by excessive instantaneous drainage. In extreme weather conditions, the public drainage network may experience water level fluctuations; the sluice gates act as check valves, preventing backflow into the public drainage network and protecting the reservoir.

[0051] Furthermore, the mounting base 200 is also provided with a drainage channel as a drainage structure. The water storage tank 220 is located between the drainage channel and the first connecting part. The two ends of the drainage channel have an inlet and an outlet, respectively. The inlet of the drainage channel is provided with a cover plate 240, which has two or more through holes. The cover plate 240 is preferably a grating plate. The outlet of the drainage channel is provided with a filter device for filtering sediment. The filter device is detachably connected to the outlet of the drainage channel for easy replacement and to prevent excessive sediment from clogging the filter device and causing poor drainage. The filter device is preferably a filter screen. The outlet of the water storage tank 220 is connected to the end of the drainage channel near the outlet of the drainage channel, and is connected to the public drainage pipe 230 through the drainage channel and its outlet. The water discharged from the water storage tank 220 is filtered for sediment by the filter device at the outlet of the drainage channel before being discharged into the public drainage pipe 230.

[0052] This application employs a tiered flood discharge system, consisting of a reservoir 220 located near the base of the flood barrier 100 and a drainage pipe 230 located relatively far from the base of the flood barrier 100. The reservoir 220, near the flood barrier 100, serves as a primary defense line, with gates directly intercepting the risk of backflow. When the water level in the public drainage network rises, the gates can be quickly closed, preventing external water from flowing back into the basement flood barrier 100 area via the shortest path, thus protecting the safety of core areas (such as equipment rooms and parking areas). The drainage pipe 230, located far from the flood barrier 100, serves as a secondary drainage path. Even if the primary channel gates fail or the municipal pipeline pressure is extremely high, this channel can still discharge water through pump pressurization or gravity flow.

[0053] This application establishes redundant paths for the drainage system. The gateless and valveless drainage pipe 230 can serve as an emergency, forceful flood discharge outlet under extreme conditions, achieving high reliability and efficiency with a simple structure. The drainage pipe 230 has a large discharge capacity and is not equipped with gates or valves, enabling large-volume emergency drainage. When the drainage structure rapidly discharges floodwater, relying solely on the small-capacity, small-outlet reservoir 220 channel may result in negative pressure siphoning or air resistance due to excessively high flow velocity, leading to decreased drainage efficiency. In this situation, the drainage channel without gates or valves can act as a vent, balancing internal and external pressures, ensuring stable water flow, and preventing high pressure from the public drainage network, which would severely impact the gates of the reservoir 220 in the primary drainage path. The diversion effect of the secondary drainage path reduces the water pressure on the gates, extending their service life.

[0054] In one possible implementation, the cover plate 240 is detachably fastened to the inlet of the drainage channel. After the cover plate 240 is closed, it is flush with the ground at the basement entrance, providing normal support for passing vehicles and pedestrians and preventing them from falling into the drainage pipe 230, thus ensuring normal passage at the basement entrance. Simultaneously, water flows through the through-holes in the cover plate 240 into the drainage pipe 230 and into the public drainage system. In deep-sea island reefs, where the water has a high sediment content, the ease and timeliness of filter replacement are crucial. This application allows the cover plate 240 to be lifted, enabling replacement of the filter 250 through a straight, direct drainage channel, facilitating operation and providing ample space.

[0055] In one possible implementation, the baffle 100 is preferably a rectangular plate. The first limiting part 210 is fixedly connected to the left / right side wall of the basement entrance, with a tight fit at the connection point to prevent water leakage. Water flows at high speed over the baffle 100 towards the outside of the basement and flows downward into the water storage tank 220, which can form a negative pressure vortex behind the plate. The low-pressure area at the rear generates suction on the baffle 100, making the fit between the baffle 100 and the first limiting part 210 tighter, the sealing better, and the anti-leakage effect better.

[0056] The side of the first limiting part 210 that abuts against the water-blocking plate 100 is flat, and the side of the water-blocking plate 100 that abuts against the first limiting part 210 is also flat. The opposite side of the water-blocking plate 100 has a serrated cross-section. One of the plate-shaped sides of the water-blocking plate 100 is provided with two or more parallel elongated grooves 120, the length direction of which is perpendicular to the rotation axis of the water-blocking plate 100 at the first connecting part. When the water-blocking plate 100 rotates to abut against the first limiting part 210, one side of the water-blocking plate 100 abuts and fits against the first limiting part 210, preventing liquid from leaking into the basement through the gap between the water-blocking plate 100 and the first limiting part 210. The side of the water-blocking plate 100 with the grooves 120 faces outward from the basement.

[0057] Compared to a plain flat baffle 100, its ability to resist water pressure is limited when facing sudden heavy rainfall or storm surges with rapid water flow. This application has the following advantages:

[0058] Flow diversion and pressure relief. The water flow pattern on the flat plate is a continuous laminar flow, forming a large-area uniform water film. The kinetic energy of the water is concentrated, almost entirely converted into positive pressure on the plate surface, resulting in significant pressure damage. However, when rainwater or floodwater flows down the outer side of the baffle plate 100 of this application, the vertical channels 120 divide the water flow into multiple discrete turbulent streams, and this division continues. After division, the kinetic energy is redistributed among the multiple channels 120. The initial impact is independently borne by each channel 120, but the sustained impact pressure is offset by the disruption of the water flow consistency and mutual interference between the water flows in each channel 120, preventing the pressure from being synchronously superimposed. Part of the kinetic energy is converted into positive pressure, part is splashed laterally at the edge of the channel 120, carrying away energy, and some is dissipated internally due to the collision of the divided water columns. Therefore, this application can divert water flow through the vertical groove 120, and dissipate some of the energy that might otherwise be converted into positive pressure on the plate surface through cost reduction and turbulence, thereby reducing the positive pressure on the baffle plate 100, relieving pressure and extending service life.

[0059] Suppressing lateral deformation. The vertical grooves 120 are equivalent to adding longitudinal reinforcing ribs to the slab surface, significantly improving the bending resistance of the flood barrier 100 against flood impact. A flat slab surface will bulge like a drumhead under normal pressure and eventually crack. The vertical grooves 120 are equivalent to adding longitudinal reinforcing ribs to the slab surface. The grooves 120 disperse concentrated loads, and the pressure is preferentially transmitted to the top of the grooves 120. The serrated tips of the grooves 120 and the multiple micro-arches formed by the grooves decompose large-span bending into small micro-bending segments, which can resist bulging deformation. Moreover, the stress is concentrated at the thickest part of the structure, where the tensile strength is the highest, which can resist deformation. In addition, the grooves 120 can divert and relieve pressure, reduce the frontal impact force on the flood barrier 100, and reduce the risk of lateral deformation or collapse of the flood barrier 100.

[0060] Furthermore, considering the special geographical environment of deep islands and reefs, where there is significant wind and sand and the water flow often contains a large amount of silt, when silt accumulates at the bottom of the baffle 100, it not only interferes with the water-blocking effect but also affects the normal rotation and closure of the baffle 100, requiring considerable manpower for cleaning. This application provides the aforementioned water storage tank 220 in the mounting base 200, with the first connection located at the edge of the water inlet opening of the water storage tank 220. During flood control operations, the vertical groove 120 of the baffle 100 directs the water flow to the base of the baffle 100, allowing it to fall directly into the water storage tank 220 through the water inlet at the base of the baffle 100. Even if the water flow has a high silt content, it will only settle and accumulate near the gate on the inclined surface of the water storage tank 220 or above the filter 250, without accumulating at the bottom of the baffle 100 and affecting its automatic closure, thus eliminating the need for manual silt removal.

[0061] In one possible implementation, the automatic water-blocking device at the basement entrance further includes a first liquid level sensor 300, which is installed on the outer wall of the mounting base 200 and is used to detect the liquid level information of the liquid on the ground at the basement entrance. The output terminal of the first liquid level sensor 300 is electrically connected to the first driver.

[0062] This application uses a first liquid level sensor 300 to detect whether there is liquid accumulation on the ground at the entrance of the basement. If there is liquid accumulation, the liquid level information is uploaded to a first driver, which converts it into a control signal to drive the internal drive baffle 100 to rotate and stand upright. Therefore, the automatic water-blocking device at the basement entrance provided by this application can automatically sense the water accumulation at the entrance and automatically control the baffle 100 to stand upright to block water and prevent flooding. It can realize automatic sensing water blocking at the entrance of large basements in deep islands and reefs under storms or other extreme weather and natural disasters, which can further reduce the dependence of basement flood control work on manual labor and automate and intelligentize the flood control work. The output of the first liquid level sensor 300 can also be electrically connected to the basement integrated management system or alarm device to remind staff of flooding and provide liquid level information at the entrance as a reference, which is more conducive to the implementation of flood control work.

[0063] In one possible implementation, the first driver is provided with a first transmission element, which is a first rope 272. The first driver is a winding machine, and it is adapted to drive its drive shaft to rotate. One end of the first rope 272 is connected to the drive end of the first driver, and the other end is connected to the slider 270. The first driver changes the unfolded length of the first rope 272 by winding and unwinding the first rope 272, driving the slider 270 to slide and thus driving the baffle plate 100 to rotate.

[0064] Preferably, the elastic element is a first spring 273. The end of the first rope 272 away from the drive shaft of the first driver is located at the helical axis of the first spring 273. After passing through the hollow structure of the first spring 273, the first rope 272 is fixedly connected to the slider 270, ensuring uniform force distribution and connection stability. Along the entry and exit direction of the basement entrance, the sliding track 260 and the drainage structure are located on the same side of the first connection. Both the sliding track 260 and the drainage structure are installed on the outward-facing side of the basement entrance, which reduces the size of the mounting base 200 and facilitates installation.

[0065] The sliding track 260 is located inside the water storage tank 220, with its inlet located near the end of the tank. The inner wall of the water storage tank 220 is provided with a long, grooved slide rail 260 into which the slider 270 slides. The slider 270, or the connection point between the slider 270 and one end of the telescopic rod 400, or the telescopic rod 400 extending out of the grooved opening of the long, grooved slide rail, has its opening facing the same direction as the rotation axis of the baffle plate 100 at the first connection point. This design is simple and easy to shape. The grooved opening faces the left / right side of the basement entrance, rather than the upper side in the direction of gravity, which reduces the damage of water flow to the first spring 273 and the first rope 272 inside the sliding track 260, extending the product's service life. The depth of the channel can be appropriately increased depending on the situation. During ordinary rainfall, when the water storage tank 220 is used for drainage and storage, the water flow blocked by the baffle plate 100 flows downwards under gravity along the guide of the vertical channel 120, without contacting or having minimal contact with the first spring 273 and the first rope 272 located deep within the channel and at a certain distance from the channel opening. The first spring 273 can be waterproofed, and a waterproof spring is selected. The first rope 272 and the second rope 224 are preferably cables, which have advantages such as light weight, high strength, good impact resistance and wear resistance, corrosion resistance, mildew resistance, and insect resistance.

[0066] In one possible implementation, the slider 270 is slidably connected to the sliding track 260. The sliding direction of the slider 270 intersects the rotation axis of the baffle 100 at the first connection, meaning the sliding direction of the slider 270 is inclined to the rotation axis of the baffle 100 at the first connection and inclined to the horizontal plane. The sliding trajectory of the slider 270 on the sliding track 260 is an inclined line segment. The preset length of this inclined line segment along the direction of gravity is greater than or equal to the rotation radius of the baffle 100 on the connecting seat, preferably equal to it. The inclination angle depends on the relationship between the pre-embedded depth of the mounting base 200 and the rotation radius of the baffle 100 on the connecting seat. As long as the angle between the baffle 100 and the horizontal plane is within the range of the slider 270's displacement trajectory, it is acceptable. The radius of rotation of the baffle plate 100 on the connecting seat refers to the rotation root at the end of the baffle plate 100 connected to the first connecting part, and the opposite end of the baffle plate 100 as the rotation distal end. The connection point of the telescopic rod 400 on the baffle plate 100 is located in the middle of one side of the plate surface, close to the rotation distal end. Taking the long groove-shaped slide rail as an example, the splashing water enters the long groove-shaped slide rail and will flow downward along the inclined inner wall of the track to the end of the track under the action of gravity and overflow out of the track, reaching the drain outlet of the water storage tank 220 below the water storage tank 220, and diverting the water to the filter 250 for sand removal and drainage.

[0067] In one possible implementation, a spring bead is provided between two adjacent telescopic rod sections 400 for position locking. When the first driver drives the slider 270 to slide, the steel ball of the spring bead retracts to unlock, thus retracting the telescopic rod 400. Specifically, the telescopic rod 400 includes at least two telescopic rod sections 400, each section being hollow and having a telescopic cavity with one open end. All telescopic rod sections 400 are arranged sequentially with their lengths aligned. One end of the length of one telescopic rod section 400 enters the telescopic cavity of an adjacent section 400 through the opening at one end of the cavity, and slides within the cavity along the rod-like length of that section, thereby achieving the sliding connection between adjacent sections and completing the overall extension and retraction of the telescopic rod 400.

[0068] A spring bead is provided at one end of the telescopic rod 400 section that extends into the telescopic cavity. The spring bead includes a second spring and a locking bead 410. The locking bead 410 is connected to the outer wall of the end of the telescopic rod 400 section that extends into the telescopic cavity via the second spring. The two ends of the second spring along its elastic extension direction are respectively connected to the outer wall of the telescopic rod 400 section and the locking bead 410. The elastic extension direction of the second spring is perpendicular to the sliding direction of the telescopic rod 400 section within the telescopic cavity. The inner wall of the telescopic cavity of the telescopic rod 400 section has a groove or through hole that matches the locking bead 410.

[0069] During the relative sliding of the telescopic rod 400 sections, the inner wall of the telescopic cavity restricts the position of the locking bead 410, and the locking bead 410 compresses the second spring, which remains in a compressed state. When two adjacent telescopic rod sections 400 slide relative to each other to a preset position, causing the overall length of the telescopic rod 400 to reach the preset extension length, the baffle plate 100 rotates to abut against the first limiting part 210. At this time, the locking bead 410 is positioned opposite to the groove (or through hole) and extends into the groove (or through hole) under the elastic force of the second spring. The two adjacent telescopic rod sections 400 are engaged by the locking bead 410 and the groove, locking the relative position of the two adjacent telescopic rod sections 400, preventing them from sliding and extending or shortening arbitrarily. This makes the triangular reinforcement support of the telescopic rod 400 more stable, strengthens the connection stability of the baffle plate 100 on the mounting base 200, and prevents the baffle plate 100 from rotating or shaking arbitrarily. This application does not specify the unlocking method of the spring bead locking structure, as long as it can be unlocked when needed, ensuring the free extension and retraction of the telescopic rod 400. In one possible implementation, the end of the groove or through hole along the sliding direction of the telescopic rod 400 is inclined or arc-shaped. When the pulling force is large enough, it can overcome the frictional resistance caused by the spring force of the second spring. The locking bead 410 and the inner wall of the groove are relatively displaced, the locking bead 410 moves out of the groove, the plug-in lock is unlocked, and the telescopic rod 400 is allowed to extend and retract freely. The telescopic rod 400 shortens, and the baffle plate 100 rotates until it is flush with the ground.

[0070] In one possible implementation, the automatic flood-blocking device at the basement entrance includes all the aforementioned components. The first and second actuators are preferably motors. The first liquid level sensor 300 is preferably a photoelectric liquid level sensor, with its sensing end only slightly above ground level, used to detect whether there is already water accumulation on the ground. This application does not specifically limit the installation height of the sensing end of the first liquid level sensor 300 or the height of the sensing liquid level; it can be flexibly set according to the actual flood control capacity of the basement. The second liquid level sensor is preferably a hydrostatic liquid level sensor.

[0071] Before a large influx of water occurs during a disaster, a pre-set linkage program is established. The first liquid level sensor 300 detects the presence of a small amount of accumulated water and outputs a signal to the first actuator. Subsequently, the drive shaft containing the first rope 272 connected to the slider 270 automatically rotates and unwinds, causing the first rope 272 to relax and unfold. The first spring 273 connected to the slider 270 pushes the slider 270 outward. As the slider 270 changes position, the telescopic rod 400 rotates relative to the slider 270, extending and retracting, pushing and causing the water-blocking plate 100 at the other end of the telescopic rod 400 to gradually stand up. When the angle between the water-blocking plate 100 and the ground approaches 90°, although the angle between the telescopic rod 400 and the water-blocking plate 100 decreases and the torque weakens, the water-blocking plate 100 can still rotate to 90° due to the horizontal impact of the water flow outside the reservoir. At this time, the water-blocking plate 100 is in the following state: Figure 1As shown. At this time, the first limiting part 210 fixed to the side wall 500 of the basement entrance will restrict the further rotation of the water barrier 100, ensuring that the angle between the water barrier 100 and the ground does not exceed 90°. At the same time, the locking ball 410 of the spring ball at the connection between the two sections of the telescopic rod 400 pops out of its locking position, preventing the telescopic rod 400 from extending or retracting easily. At this point, the water barrier 100 is fully rotated open, blocking the incoming water flow and preventing a large amount of water from entering the large basement and threatening people's lives and property.

[0072] When the accumulated water flows to the water-blocking plate 100 at the entrance of the basement, a large amount of silt and sand in the water settles into the water storage tank 220 in front of the water-blocking plate 100 due to gravity. As the bottom of the water storage tank 220 is inclined at a certain angle, the silt and sand gradually accumulate on the side closer to the gate baffle of the water storage tank 220.

[0073] As the floodwaters recede, the first liquid level sensor 300, located on the side wall 500 of the basement entrance near the first limiting part 210, detects that the ground water has been drained. Simultaneously, the second liquid level sensor inside the reservoir 220 detects that the liquid level in the reservoir 220 has accumulated to a certain depth. This triggers the second actuator above the gate of the reservoir 220 to drive the second drive shaft 225 to rewind, pulling the second rope 224 upwards and opening the gate of the reservoir 220. The silt accumulated at the gate is flushed out by the water flow in the reservoir 220 and falls onto the filter screen below. This allows the outflowing water to pass through the filter 250 and flow into the underground sewer, while the silt is intercepted by the filter 250. Later, personnel can remove and clean the filtered silt by lifting the cover plate 240 above the filter 250.

[0074] After the water in the reservoir 220 has completely drained, the second liquid level sensor installed at the bottom of the reservoir detects the drop in liquid level and controls the drive shaft of the second actuator above the gate of the reservoir 220 to rotate and unwind. The second rope 224 on it unwinds downward, causing the gate to fall back down, and the drain outlet of the reservoir 220 returns to the closed state.

[0075] Simultaneously, regarding the flood barrier 100, when the first liquid level sensor 300 on the side wall 500 of the underground parking garage entrance detects that the surface water has been drained and the parking garage is no longer threatened by flooding, it immediately controls the first drive shaft of the rear driver to rotate and rewind, tightening the first rope 272 connecting the slider 270, compressing the first spring 273, and causing the slider 270 to slide towards the inside of the parking garage, gradually approaching the flood barrier 100. The locking bead 410 of the telescopic rod 400 is pressed back to unlock, and the telescopic rod 400 shortens, thereby closing the flood barrier 100 and making it level with the horizontal plane. At this point, the flood barrier 100 at the parking garage entrance is completely retracted and hidden underground, and the parking garage can be used normally without affecting the passage of vehicles and pedestrians.

[0076] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An automatic water-blocking device for a basement entrance, characterized in that, include: The mounting base is provided with a first limiting part and a sliding rail; A water baffle plate, which is rotatably mounted on the mounting base via a water baffle pivot. The support structure includes a telescopic rod and a slider. The two ends of the telescopic rod along its telescopic direction are rotatably connected to the baffle plate and the slider, respectively. The slider is slidably disposed in the sliding track, and the sliding direction is perpendicular to the rotation axis of the baffle plate at the baffle pivot. An elastic element is disposed within the sliding track. The two ends of the elastic element along its elastic extension direction abut against the inner wall of the end of the sliding track and the slider, respectively, and the elastic element is compressed in the initial state. A first actuator, adapted to drive the slider to slide within the sliding track, wherein when the water level at the basement entrance reaches a first predetermined condition, the first actuator drives the slider via the elastic element to raise the telescopic rod and abut against the first limiting part, and when the water level at the basement entrance reaches a second predetermined condition, the first actuator drives the slider to lower the telescopic rod to parallel the basement entrance ground level; and... A first liquid level sensor is installed on the outer wall of at least one side of the basement entrance for detecting the liquid level of water accumulated on the ground at the basement entrance. The first liquid level sensor is electrically connected to the first actuator. The first driver is provided with a first drive shaft and a first rope. The first drive shaft is connected to the drive end of the first driver. One end of the first rope is wound around the first drive shaft, and the other end is connected to the slider. The first driver changes the unfolded length of the first rope by winding / unwinding the first rope through the first drive shaft, drives the slider to slide, and thus drives the baffle to rotate. When the water level at the basement entrance reaches a first predetermined condition, the first drive shaft automatically rotates, loosens the first rope, and the elastic element pushes the slider outward. The slider drives the telescopic rod to extend, raising the baffle plate and abutting against the first limiting part. The telescopic rod is locked. When the water level at the basement entrance reaches a second predetermined condition, the first drive unit automatically rotates, rewinds the first rope, and the first rope pulls the slider back. The slider drives the telescopic rod to retract and release the lock, lowering the baffle plate to be parallel to the basement entrance ground. The elastic element is compressed.

2. The automatic water-blocking device for the basement entrance according to claim 1, characterized in that, The mounting base is also equipped with a water storage tank, which is located below the baffle plate along the entrance and exit direction of the basement. The inlet of the water storage tank faces the baffle plate, and the outlet of the water storage tank is connected to the public drainage pipe. When the baffle plate is rotated to be parallel to the ground at the basement entrance, the baffle plate adheres to the side wall of the mounting base and covers the inlet of the water storage tank.

3. The automatic water-blocking device for the basement entrance according to claim 2, characterized in that, The reservoir is rectangular in shape, with its bottom inclined. The side closer to the water-blocking shaft is higher than the side farther from the water-blocking shaft, and the reservoir outlet is equipped with a gate.

4. The automatic water-blocking device for the basement entrance according to claim 3, characterized in that, The reservoir is also equipped with a second actuator for driving the gate switch of the reservoir. The reservoir is equipped with a second liquid level sensor for detecting the water level information in the reservoir. The second liquid level sensor is electrically connected to the second actuator.

5. The automatic water-blocking device for the basement entrance according to claim 4, characterized in that, The second driver is provided with a second drive shaft and a second rope. The second drive shaft is connected to the drive end of the second driver. One end of the second rope is wound around the second drive shaft, and the other end is connected to the gate. The second driver raises and lowers the gate by winding and unwinding the second rope through the second drive shaft.

6. The automatic water-blocking device for the basement entrance according to claim 1, characterized in that, The mounting base is also provided with a drainage channel, the inlet of the drainage channel is provided with a cover plate, the cover plate is provided with a through hole, and the outlet of the drainage channel is provided with a filter device for filtering mud and sand.

7. An automatic water-blocking method for an automatic water-blocking device at the entrance of a basement according to any one of claims 1-6, characterized in that, When a large amount of water flows in during a disaster, the first liquid level sensor detects the presence of water accumulation and outputs a signal to the first driver. The first drive shaft automatically rotates to unwind the first rope, causing the elastic element to push the slider outward, the telescopic rod to extend, and push the baffle plate to gradually stand up until it abuts against the first limit part. At the same time, the telescopic rod locks. When the accumulated water flows to the water-blocking plate at the entrance of the basement, the silt and sand in the water settles into the water storage tank in front of the water-blocking plate. Due to the inclination of the bottom of the water storage tank at a certain angle, the silt and sand gradually accumulate towards the side of the gate baffle of the water storage tank. When the water recedes, the first liquid level sensor detects that the water on the ground has been drained, and at the same time the second liquid level sensor detects that the liquid level in the reservoir has accumulated to a certain depth. The second driver is then controlled to drive the second drive shaft to rotate and wind up the second rope to open the gate. The water in the reservoir flows into the underground sewer, while the silt is filtered and intercepted. After the water in the reservoir has completely drained, the second liquid level sensor detects the drop in liquid level and controls the second actuator to drive the second drive shaft to rotate and unwind the second rope, causing the gate to fall and close. The first liquid level sensor detects that the water on the ground has been drained, and controls the first driver to drive the first shaft to rotate and rewind, tightening the first rope, compressing the first spring, causing the slider to slide to the inside of the basement, and shortening the telescopic rod, thereby closing the water baffle and making it level with the horizontal plane.

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