An automatic flood prevention system for a subway pavilion and a control method thereof

Abstract

The application relates to the technical field of subway wind pavilion flood prevention, in particular to a subway wind pavilion automatic flood prevention system and a control method. In the first aspect, the subway wind pavilion automatic flood prevention system comprises a mechanical assembly, an intelligent sensing assembly and a remote monitoring assembly; the mechanical assembly is used for executing wind pavilion flood prevention; the intelligent sensing assembly is used for detecting corresponding water levels and flood prevention baffle position information; and the remote monitoring assembly is used for receiving information of the intelligent sensing assembly, monitoring a running state of the mechanical assembly in real time and issuing a control instruction. In the second aspect, the control method of the subway wind pavilion automatic flood prevention system comprises the following steps: S1, on-site induction; S2, execution of rising; and S3, execution of falling. The application has the effects of helping to solve the problem of flood backflow from a wind pavilion opening, improving the reliability of subway safe operation and reducing unnecessary losses.

Description

Technical Field

[0001] This application relates to the technical field of flood prevention for subway ventilation shafts, and in particular to an automatic flood prevention system and control method for subway ventilation shafts. Background Technology

[0002] Subway ventilation shafts are ground-level structures within subway ventilation ducts, primarily used for collecting and exhausting fresh air, and are directly connected to the subway's internal systems. Based on their function, subway ventilation shafts can be categorized into fresh air shafts, exhaust shafts, and piston shafts. Subway stations typically have two groups of eight ventilation shafts: two fresh air shafts, two exhaust shafts, and four piston shafts. Current ventilation shaft layouts generally fall into two categories: centralized and decentralized. Centralized layouts often place ventilation shafts at both ends of the station. Decentralized layouts involve dispersing the ventilation shafts. There are tall and short ventilation shafts; tall ventilation shafts have a similar layout to centralized ventilation shafts and have relatively less impact on the surrounding environment and landscape.

[0003] One of the main reasons for subway flooding is the low height of the ventilation shafts. To address this issue, Guangzhou Metro's new lines are required to raise the elevation of their ground-level ventilation shafts by 0.5 meters from the original design elevation of 1 meter, reaching 1.5 meters. Therefore, the top elevation of these ventilation shafts will be at least 1.5 meters above ground level. However, the height of these ground-level ventilation shafts must meet technical regulations, meaning that if a ventilation shaft exceeds 1 meter in height, it must be set back from the road boundary line. This increases the difficulty of coordinating and obtaining permits for ventilation shaft construction plans at some stations on new subway lines under construction.

[0004] Due to the limitations imposed by road setback regulations, in order to help solve the problem of floodwater backflow from ventilation shafts, improve the reliability of subway safe operation, and reduce unnecessary losses, a mechanical flood control device is needed. This device should have flood control functions to prevent floodwater from entering and damaging related equipment, thus ensuring the safe operation of the subway. Summary of the Invention

[0005] To help solve the problem of floodwater backflow from the ventilation shaft opening, improve the reliability of subway safe operation, and reduce unnecessary losses, this application provides an automatic flood prevention system and control method for subway ventilation shafts.

[0006] The technical solution provided in this application for an automatic flood control system and control method for subway ventilation shafts is as follows:

[0007] In a first aspect, this application provides an automatic flood prevention system for subway ventilation shafts, which includes mechanical components, intelligent sensing components, and remote monitoring components;

[0008] The mechanical component is used to perform flood control of the ventilation tower. The mechanical component includes a shell frame, a flood control baffle and a drive structure. The interior of the shell frame is an installation space with a hollow structure. A cover plate is provided on the top of the shell frame. The flood control baffle passes through the cover plate and is raised and lowered in the installation space by the drive structure.

[0009] A waterproof cover is provided on the top surface of the flood control baffle, which can completely cover the outer edge of the shell frame; a long strip-shaped installation box is provided at the bottom of the perimeter wall of the flood control baffle, and the installation box is located in the installation space; a sealing strip is provided inside the installation box, and a sealing groove is opened on the top surface of the sealing strip; a sealing plate is provided on the bottom surface of the cover plate; the installation box can rise with the flood control baffle until the top surface of the sealing strip abuts against the bottom surface of the waterproof cover, at which time the sealing plate is embedded in the sealing groove.

[0010] The intelligent sensing component includes a water level gauge and a position sensor. The intelligent sensing component is used to detect the corresponding water level and flood control barrier position information.

[0011] The remote monitoring component includes a field control unit, an IBP remote control unit, a station-level monitoring unit, and a central-level monitoring unit. The remote monitoring component is used to receive information from the intelligent sensing components, monitor the operating status of the mechanical components in real time, and issue control commands.

[0012] By adopting the above technical solution, the water level information and the position information of the flood control baffle at the corresponding position of the position sensor are collected in real time on site through the water level gauge and position sensor, and sent to the on-site control unit. The on-site control unit determines whether the water level information at different positions has reached the corresponding safety limit position. The on-site control unit transmits the received signal to the station-level monitoring unit. The central-level monitoring unit communicates with the station-level monitoring unit to monitor the station and on-site conditions. The IBP remote control unit can realize remote control of the subway ventilation shaft automatic flood control system.

[0013] When the water level on all four sides of the subway ventilation shaft reaches the warning level, the remote monitoring component alarms based on the water level information, and the rotating motor starts to prepare for operation. When the water level reaches the safety limit level, the remote monitoring component automatically issues a lifting command, driving the rotating motor of the corresponding subway ventilation shaft to power on, causing the flood control baffle to rise until the top surface of the sealing strip abuts against the bottom surface of the waterproof cover. At this time, the sealing plate is embedded in the sealing groove to seal and waterproof, improving the sealing performance. After the flood control baffle has risen to the correct position, the rotating motor automatically stops moving.

[0014] When the water level drops below the warning level, the remote monitoring component automatically issues a descent command, energizing the rotating motor at the corresponding subway ventilation shaft location. The rotating motor lowers the flood control baffle. Once the baffle has reached its designated position, a stop command is automatically issued, de-energizing the rotating motor. This helps solve the problem of floodwater backflow from the ventilation shaft opening, improving the reliability of subway safety operations, reducing unnecessary losses, and is intelligent, easy to control, and ensures stable operation and good sealing performance of the flood control ventilation shaft.

[0015] Optionally, the mounting box includes a box body and a drive plate. The drive plate is hinged to the top of the box body on the side away from the flood control baffle by a torsion spring. The sealing strip on the side away from the flood control baffle is fixedly connected to the drive plate. When the torsion spring is in its natural state, the top of the drive plate is tilted in the direction away from the flood control baffle, thereby increasing the opening of the sealing groove.

[0016] Multiple abutment rods are slidably arranged within the installation space. The sliding direction of the abutment rods is towards or away from the drive plate. When the abutment rod slides towards the drive plate, it drives the drive plate to slide closer to the flood control baffle, and the torsion spring deforms. At this time, the opening of the sealing groove decreases, and the inner wall of the sealing groove abuts against the outer wall of the sealing plate. When the abutment rod slides away from the drive plate, the torsion spring returns to its natural state.

[0017] By adopting the above technical solution, due to the large size of the subway ventilation shaft, the flood control baffle is also quite long. To improve the accuracy of the sealing plate insertion into the sealing groove, this application includes a drive plate and a torsion spring. When the flood control baffle is in the lowered state, the torsion spring is in its natural state. At this time, the top of the drive plate is tilted away from the flood control baffle, thereby increasing the opening of the sealing groove. This makes it easier for the sealing plate to be inserted into the sealing groove after the flood control baffle is raised. Once the sealing plate is inserted into the sealing groove, the abutment rod slides towards the drive plate. After the abutment rod abuts against the drive plate, it drives the drive plate to slide towards the flood control baffle. The torsion spring deforms, at which point the opening of the sealing groove decreases, and the inner wall of the sealing groove abuts against the outer wall of the sealing plate. The sealing groove and the sealing plate cooperate to achieve a sealing state.

[0018] Optionally, an mounting rod is provided on the bottom surface of the cover plate, the mounting rod is located on both sides of the abutment rod in the width direction, a support plate is provided on the bottom surface of the mounting rod, the abutment rod is located above the support plate, a fixing rod is provided on the top surface of the support plate, the fixing rod is located on both sides of the abutment rod in the width direction, a guide rod is fixedly connected to the mounting rod near the fixing rod, the guide rod passes through the fixing rod, a return spring is sleeved on the guide rod, one end of the return spring abuts against the mounting rod, and the other end of the return spring abuts against the fixing rod;

[0019] A drive rod is connected to the side wall of the box away from the flood control baffle via a connecting rod. The top end of the drive rod and the end of the abutment away from the flood control baffle are provided with mutually cooperating wedge-shaped surfaces. When the drive rod rises with the flood control baffle, the abutment slides towards the drive plate; when the drive rod falls with the flood control baffle, the abutment is reset by the action of the return spring.

[0020] By adopting the above technical solution, when the flood control baffle rises, the drive rod rises synchronously until the sealing plate begins to enter the sealing groove. At this point, the drive rod and the wedge-shaped surface on the abutment rod abut against each other. As the flood control baffle continues to rise, the drive rod continues to rise, thereby driving the abutment rod to push the drive plate towards the flood control baffle. When the flood control baffle descends, the abutment rod and the drive rod disengage. The abutment rod automatically resets under the action of the return spring, and the drive plate automatically resets under the action of the torsion spring.

[0021] Optionally, the cover plate includes an inner plate, an outer plate, and a connecting plate. The top surfaces of the inner plate and the outer plate are provided with connecting grooves. Insert plates are fixedly connected to both sides of the bottom surface of the connecting plate. Sealing gaskets are provided on both sides of the insert plates in the thickness direction. The insert plates are inserted into the connecting grooves. The top surface of the connecting plate is flush with the top surface of the cover plate. The inner plate can be opened until the top surface of the sealing strip is fully exposed.

[0022] By adopting the above technical solution, after long-term use, the inner panel can be opened and removed by pulling out the connecting plate and insert plate from the connecting groove, at which point the sealing strip is fully exposed, facilitating its replacement. Simultaneously, the opening of the connecting groove and the placement of the connecting plate conceal the gap at the connection between the inner and outer panels, while the sealing gasket further waterproofs the surface, thus improving sealing performance while facilitating sealing strip replacement.

[0023] Optionally, multiple mounting grooves are provided on the top surfaces of both the inner and outer panels. The mounting grooves are connected to the connecting grooves. Mounting side ears are fixedly connected to both sides of the connecting plate in the width direction. The mounting side ears are embedded in the mounting grooves and fixed by countersunk screws.

[0024] By adopting the above technical solution, the installation of side lugs and countersunk screws can strengthen the connection between the inner and outer plates, improve the overall stability of the cover plate, and make the cover plate flat and aesthetically pleasing. In addition, when assembling or disassembling the inner and outer plates, the operation can be performed directly from the top of the cover plate, providing a wide field of vision and convenient operation.

[0025] Optionally, the sealing strip is embedded in the mounting box, and multiple dovetail strips are fixedly connected to the side of the sealing strip near the drive plate. A dovetail groove for embedding the dovetail strips is provided on the top surface of the drive plate, and the dovetail groove penetrates the side of the drive plate near the inside of the mounting box.

[0026] By adopting the above technical solution, the dovetail strip and dovetail groove not only realize the fixed connection between the sealing strip and the drive plate, but also facilitate the installation and removal of the sealing strip. When installing or removing the sealing strip, simply press down or pull it out from the top of the mounting box.

[0027] Optionally, the drive structure is disposed within the installation space. The drive structure includes a rotary motor, a bevel gear set, a commutator, a screw jack, and a connecting shaft. The bevel gear set includes a mounting housing and four unit gears disposed within the mounting housing. The connecting shaft includes a first shaft and a second shaft. The bevel gear set is disposed in the middle of the first shaft, and two of the oppositely disposed unit gears are connected to the first shaft. The rotating shaft of the rotary motor is connected to one of the remaining two unit gears.

[0028] The commutator is located at both ends of the first shaft, and the second shaft is located at both ends of the first shaft and is correspondingly connected to the commutator. The screw jack is located on the second shaft and is connected to the bottom of the flood control baffle to control the raising and lowering of the flood control baffle.

[0029] By adopting the above technical solution, the bevel gear set is driven to rotate under the drive of the rotating motor, which in turn drives the first shaft to rotate. The commutators at both ends of the first shaft can change the direction of the rotation center axis by 90°, which in turn drives the second shaft to rotate, which in turn drives the screw jack to move. Through the worm gear mechanism inside the screw jack, the flood control baffle moves up and down.

[0030] Optionally, it also includes a handwheel, which is located outside the housing frame and connected to a unit gear away from the rotating motor. The housing frame is provided with multiple access doors, one of which is located at the handwheel. The rotating shaft of the rotating motor is detachably connected to the unit gear.

[0031] By adopting the above technical solution, when the rotating motor is damaged, the staff can disconnect the connection between the rotating motor shaft and the unit gear by opening the maintenance door at the handwheel. Then, by controlling the rotating handwheel, the raising and lowering of the flood control baffle can be manually controlled. The combination of automatic and manual control provides dual protection and helps to improve the reliability of flood control.

[0032] Optionally, the intelligent sensing components are deployed on all four sides of the subway ventilation shaft.

[0033] By adopting the above technical solution, it is possible to combine the conditions on all four sides of the subway ventilation shaft to determine whether flooding has occurred, thereby reducing the possibility of misjudgment that could trigger the flood control system.

[0034] Secondly, this application provides a control method for an automatic flood control system for subway ventilation shafts, which includes the following steps:

[0035] S1. On-site sensing: The on-site water level information and the position information of the flood control baffle at the corresponding position of the position sensor are collected in real time through the water level gauge and position sensor, and sent to the on-site control unit. The on-site control unit determines whether the water level information at different positions has reached the corresponding safety limit position. The on-site control unit transmits the received signal to the station-level monitoring unit. The central-level monitoring unit communicates with the station-level monitoring unit to monitor the station and on-site conditions. The IBP remote control unit can realize remote control of the subway ventilation shaft automatic flood control system.

[0036] S2, Execution of Ascent: When the water level on all four sides of the subway ventilation shaft reaches the warning position, the remote monitoring component alarms based on the water level information and starts the rotating motor to prepare for work.

[0037] When the water level reaches the safety limit position, the remote monitoring component automatically issues a lifting command, drives the corresponding subway ventilation shaft rotation motor to power on, drives the flood control baffle to rise, and automatically stops moving after the flood control baffle has risen to the correct position.

[0038] In manual control mode, station staff manually input control signals to the electrical control unit through the IBP remote control unit or the on-site control unit, and disconnect the connection between the rotating motor and the bevel gear set by opening the maintenance door. They then manually turn the handwheel to control the raising and lowering of the flood control baffle. At this time, manual control has a higher priority than automatic control.

[0039] S3. Execute descent: When the water level drops below the warning level, the remote monitoring component automatically issues a descent command, which powers on the rotating motor at the corresponding subway ventilation shaft. The rotating motor drives the flood control baffle to descend. Once the flood control baffle has descended to the correct position, a stop command is automatically issued, which de-energizes the rotating motor. In manual control mode, a control command is issued manually to control the flood control baffle to complete the descent.

[0040] In summary, this application includes at least one of the following beneficial technical effects:

[0041] 1. On-site, the water level information and the position information of the flood control baffle corresponding to the position sensor are collected in real time through the water level gauge and position sensor, and sent to the remote monitoring component. The flood control baffle is automatically controlled to rise and fall. The flood control baffle can rise until the top surface of the sealing strip abuts against the bottom surface of the waterproof cover. At this time, the sealing plate is embedded in the sealing groove to seal and waterproof, improve the sealing performance, help solve the problem of flood backflow from the ventilation shaft opening, improve the reliability of subway safe operation, reduce unnecessary losses, and is intelligent, easy to control, and the flood control ventilation shaft operates stably with good sealing performance.

[0042] 2. This application includes a drive plate, torsion spring, drive rod, and stop rod. Due to the large size of the subway ventilation shaft, the flood control baffle is relatively long, which improves the accuracy of the sealing plate being inserted into the sealing groove while effectively ensuring the sealing performance. Furthermore, the movement of the drive rod and the stop rod is driven by the lifting and lowering of the flood control baffle, resulting in an ingenious structure.

[0043] 3. The inner plate, outer plate, connecting plate, mounting lugs, countersunk screws and dovetail strips in this application facilitate the disassembly and replacement of the sealing strip, and the gap at the connection between the inner plate and the outer plate can be covered by the connecting plate. At the same time, the sealing gasket further waterproofs the surface, thus effectively ensuring the sealing performance while facilitating the replacement of the sealing strip. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the relationship structure of an automatic flood control system for subway ventilation shafts according to an embodiment of this application.

[0045] Figure 2 This is a schematic diagram illustrating the overall structure of the mechanical components in the embodiments of this application.

[0046] Figure 3 This is a structural diagram showing the installation space after hiding and removing parts of the structure in the embodiments of this application.

[0047] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0048] Figure 5 This is a schematic diagram illustrating the structure of the drive rod in an embodiment of this application.

[0049] Figure 6 This is a schematic diagram used to illustrate the driving structure in the embodiments of this application.

[0050] Figure 7 This is a schematic diagram illustrating the structure of the unit gear in an embodiment of this application.

[0051] Explanation of reference numerals in the attached drawings: 1. Shell frame; 11. Installation space; 12. Cover plate; 121. Sealing plate; 122. Mounting rod; 123. Support plate; 124. Fixing rod; 125. Guide rod; 126. Return spring; 127. Inner plate; 1271. Connecting groove; 1272. Mounting groove; 128. Outer plate; 129. Connecting plate; 1291. Insert plate; 1293. Mounting side lug; 13. Inspection door; 2. Flood control baffle; 21. Waterproof cover; 22. Mounting box; 221. Box body; 2 22. Drive plate; 223. Hinge; 224. Torsion spring; 225. Connecting rod; 226. Drive rod; 227. Wedge surface; 23. Sealing strip; 231. Sealing groove; 3. Drive structure; 31. Rotating motor; 32. Bevel gear set; 321. Mounting housing; 322. Unit gear; 33. Reversing device; 34. Screw jack; 35. Connecting shaft; 351. First shaft; 352. Second shaft; 4. Handwheel; 5. Connecting rod; 6. Stop rod; 7. Dovetail bar; 71. Dovetail groove. Detailed Implementation

[0052] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0053] Firstly, this application discloses an automatic flood prevention system for subway ventilation shafts. (Refer to...) Figure 1-4 The automatic flood prevention system for subway ventilation shafts includes mechanical components, intelligent sensing components, and remote monitoring components. The mechanical components, used to perform flood prevention, include a housing frame 1, a flood barrier 2, and a drive structure 3. The interior of the housing frame 1 is an installation space 11, which is a hollow structure. A cover plate 12 is fixedly connected to the top of the housing frame 1. The flood barrier 2 passes through the cover plate 12 and is raised and lowered within the installation space 11 via the drive structure 3. A waterproof cover 21 is fixedly connected to the top surface of the flood barrier 2. The waterproof cover 21 completely covers the outer edge of the housing frame 1 to provide waterproofing when the flood barrier 2 is in the lowered state. A long strip-shaped installation box 22 is fixedly connected to the bottom of the two side walls of the flood control baffle. The installation box 22 is located in the installation space 11. A sealing strip 23 is embedded in the installation box 22. A sealing groove 231 is opened on the top surface of the sealing strip 23. A sealing plate 121 is fixedly connected to the bottom surface of the cover plate 12. The installation box 22 can rise with the flood control baffle 2 until the top surface of the sealing strip 23 abuts against the bottom surface of the waterproof cover 21. At this time, the sealing plate 121 is embedded in the sealing groove 231.

[0054] Reference Figure 3 , Figure 6-7The drive structure 3 is located within the installation space 11. The drive structure 3 includes a rotary motor 31, a bevel gear set 32, a commutator 33, a screw jack 34, and a connecting shaft 35. The bevel gear set 32 ​​includes a mounting housing 321 and four unit gears 322 installed within the mounting housing 321. The connecting shaft 35 includes a first shaft 351 and a second shaft 352. The bevel gear set 32 ​​is located in the middle of the first shaft 351, with two opposing unit gears 322 connected to the first shaft 351. The shaft of the rotary motor 31 is connected to one of the remaining two unit gears 322. The commutator 33 is located at both ends of the first shaft 351, and the second shaft 352 is installed at both ends of the first shaft 351 and correspondingly connected to the commutator 33. The screw jack 34 is located on the second shaft 352 and connected to the bottom of the flood control baffle 2 for controlling the raising and lowering of the flood control baffle 2.

[0055] Driven by the rotating motor 31, the bevel gear set 32 ​​rotates, which in turn drives the first shaft 351 to rotate. The commutator 33 at both ends of the first shaft 351 can change the direction of the rotation center axis by 90°, which in turn drives the second shaft 352 to rotate, which in turn drives the screw jack 34 to move. Through the worm gear mechanism inside the screw jack 34, the flood control baffle 2 can move up and down.

[0056] Reference Figure 1 , Figure 6 and Figure 7 A handwheel 4 is connected to the unit gear 322 located away from the rotating motor 31. The handwheel 4 is mounted outside the housing frame 1 and connected to the unit gear 322 located away from the rotating motor 31. The housing frame 1 is provided with multiple maintenance doors 13, one of which is located at the handwheel 4. The rotating shaft of the rotating motor 31 is detachably connected to the unit gear 322 by screws and connecting rods 5. When the rotating motor 31 is damaged, the operator can disconnect the rotating shaft of the rotating motor 31 from the unit gear 322 by opening the maintenance door 13 at the handwheel 4. Then, by controlling the rotation of the handwheel 4, the raising and lowering of the flood control baffle 2 can be manually controlled. The combination of automatic and manual control provides dual protection and helps to improve the reliability of flood control.

[0057] Reference Figure 1 The intelligent sensing components include water level gauges and position sensors. These components detect the corresponding water level and the position of the flood control baffle 2. The intelligent sensing components are deployed on all four sides of the subway ventilation shaft. The remote monitoring components include a field control unit, an IBP remote control unit, a station-level monitoring unit, and a central-level monitoring unit. These components receive information from the intelligent sensing components, monitor the real-time operating status of the mechanical components, and issue control commands. Both the intelligent sensing components and the remote monitoring components can be configured according to actual conditions, but are not shown in the diagram.

[0058] On-site, water level information and the position information of the flood control baffle 2 at the corresponding positions of the position sensors are collected in real time through water level gauges and position sensors, and sent to the on-site control unit. The on-site control unit determines whether the water level information at different positions has reached the corresponding safety limit position. The on-site control unit transmits the received signal to the station-level monitoring unit. The central-level monitoring unit communicates with the station-level monitoring unit to monitor the station and on-site conditions. The IBP remote control unit can realize remote control of the subway ventilation shaft automatic flood control system.

[0059] When the water level on all four sides of the subway ventilation shaft reaches the warning level, the remote monitoring component alarms based on the water level information, and the rotating motor 31 starts working preparation. When the water level reaches the safety limit level, the remote monitoring component automatically issues a lifting command, driving the rotating motor 31 of the subway ventilation shaft at the corresponding position to power on, causing the flood control baffle 2 to rise until the top surface of the sealing strip 23 abuts against the bottom surface of the waterproof cover 21. At this time, the sealing plate 121 is embedded in the sealing groove 231 to seal and waterproof, improving the sealing performance. After the flood control baffle 2 is detected to have risen to the correct position, the rotating motor 31 automatically stops moving.

[0060] When the water level drops below the warning level, the remote monitoring component automatically issues a descent command, energizing the rotating motor 31 at the corresponding subway ventilation shaft location. The rotating motor 31 then lowers the flood control baffle 2. Once the flood control baffle 2 has reached its designated position, a stop command is automatically issued, de-energizing the rotating motor 31. This helps solve the problem of floodwater backflow from the ventilation shaft opening, improving the reliability of subway safety operations, reducing unnecessary losses, and is intelligent, easy to control, and ensures stable operation and good sealing performance of the flood control ventilation shaft.

[0061] Reference Figure 4 and Figure 5 The mounting box 22 includes a box body 221 and a drive plate 222. The drive plate 222 is hinged to the top of the box body 221 on the side away from the flood control baffle 2 via multiple hinges 223 and torsion springs 224. The number of torsion springs 224 depends on the actual situation. The sealing strip 23 is fixedly connected to the drive plate 222 on the side away from the flood control baffle 2. When the torsion springs 224 are in their natural state, the top of the drive plate 222 tilts away from the flood control baffle 2, thereby increasing the opening of the sealing groove 231. Multiple abutment rods 6 are slidably installed within the installation space 11. The sliding direction of the abutment rods 6 is towards or away from the drive plate 222. When the abutment rods 6 slide towards the drive plate 222, the abutment rods 6 drive the drive plate 222 to slide closer to the flood control baffle 2, and the torsion spring 224 deforms. At this time, the opening of the sealing groove 231 decreases, and the inner wall of the sealing groove 231 abuts against the outer wall of the sealing plate 121. When the abutment rods 6 slide away from the drive plate 222, the torsion spring 224 returns to its natural state.

[0062] Because the subway ventilation shaft is relatively large, the flood control baffle 2 is also quite long. To improve the accuracy of the sealing plate 121 inserting into the sealing groove 231, this application includes a drive plate 222 and a torsion spring 224. When the flood control baffle 2 is in the lowered state, the torsion spring 224 is in its natural state. At this time, the top of the drive plate 222 is tilted away from the flood control baffle 2, thereby increasing the opening of the sealing groove 231. This makes it easier for the sealing plate 121 to be inserted into the sealing groove 231 after the flood control baffle 2 rises. Once the sealing plate 121 is inserted into the sealing groove 231, the abutment rod 6 slides towards the drive plate 222. After the abutment rod 6 abuts against the drive plate 222, it drives the drive plate 222 to slide towards the flood control baffle 2. The torsion spring 224 deforms, and the opening of the sealing groove 231 decreases. The inner wall of the sealing groove 231 abuts against the outer wall of the sealing plate 121, and the sealing groove 231 and the sealing plate 121 cooperate to achieve a sealing state.

[0063] Reference Figure 4 and Figure 5 An installation rod 122 is fixedly connected to the bottom surface of the cover plate 12. The installation rod 122 is located on both sides of the abutment rod 6 in the width direction. A support plate 123 is fixedly connected to the bottom surface of the installation rod 122. The abutment rod 6 is located above the support plate 123. A fixing rod 124 is fixedly connected to the top surface of the support plate 123. The fixing rod 124 is located on both sides of the abutment rod 6 in the width direction. A guide rod 125 is fixedly connected to the side of the installation rod 122 near the fixing rod 124. The guide rod 125 passes through the fixing rod 124. A return spring 126 is sleeved on the guide rod 125. One end of the return spring 126 abuts against the installation rod 122, and the other end of the return spring 126 abuts against the fixing rod 124. A drive rod 226 is connected to the side wall of the box 221 away from the flood control baffle 2 via a connecting rod 225. The top end of the drive rod 226 and the end of the abutment 6 away from the flood control baffle 2 are provided with wedge-shaped surfaces 227 that cooperate with each other. When the drive rod 226 rises with the flood control baffle 2, the abutment 6 slides towards the drive plate 222. When the drive rod 226 falls with the flood control baffle 2, the abutment 6 is reset under the action of the return spring 126.

[0064] When the flood control baffle 2 rises, the drive rod 226 rises synchronously until the sealing plate 121 begins to enter the sealing groove 231. At this time, the drive rod 226 abuts against the wedge-shaped surface 227 on the abutment rod 6. As the flood control baffle 2 continues to rise, the drive rod 226 continues to rise, thereby driving the abutment rod 6 to push the drive plate 222 towards the flood control baffle 2. When the flood control baffle 2 descends, the abutment rod 6 and the drive rod 226 disengage. The abutment rod 6 automatically resets under the action of the return spring 126, and the drive plate 222 automatically resets under the action of the torsion spring 224.

[0065] Reference Figure 4The cover plate 12 includes an inner plate 127, an outer plate 128, and a connecting plate 129. Connecting grooves 1271 are formed on the top surfaces of the inner plate 127 and the outer plate 128. Insert plates 1291 are fixedly connected to both sides of the bottom surface of the connecting plate 129. Sealing gaskets are provided on both sides of the insert plates 1291 in the thickness direction. The insert plates 1291 are inserted into the connecting grooves 1271. The top surface of the connecting plate 129 is flush with the top surface of the cover plate 12. The inner plate 127 can be opened until the top surface of the sealing strip 23 is fully exposed. Multiple mounting grooves 1272 are formed on the top surfaces of both the inner plate 127 and the outer plate 128. The mounting grooves 1272 communicate with the connecting grooves 1271. Mounting ears 1293 are fixedly connected to both sides of the connecting plate 129 in the width direction. The mounting ears 1293 are embedded in the mounting grooves 1272 and fixed by countersunk screws.

[0066] After prolonged use, the sealing strip 23 can be removed by pulling out the connecting plate 129 and the insert plate 1291 from the connecting groove 1271, thereby opening and removing the inner plate 127. At this point, the sealing strip 23 is fully exposed, facilitating its replacement. Simultaneously, the opening of the connecting groove 1271 and the placement of the connecting plate 129 conceal the gap at the connection between the inner plate 127 and the outer plate 128, while further waterproofing is achieved through the sealing gasket. This facilitates the replacement of the sealing strip 23 while improving sealing performance. The installation of the side lugs 1293 and countersunk screws reinforces the connection between the inner plate 127 and the outer plate 128, improving the overall stability of the cover plate 12 and resulting in a flat and aesthetically pleasing overall appearance. Furthermore, the disassembly and assembly of the inner plate 127 and the outer plate 128 can be performed directly from the top of the cover plate 12, providing a wide field of vision and convenient operation.

[0067] Reference Figure 4 and Figure 5 The sealing strip 23 is embedded in the mounting box 22. Multiple dovetail strips 7 are fixedly connected to the side of the sealing strip 23 near the drive plate 222. A dovetail groove 71 is provided on the top surface of the drive plate 222 for the dovetail strips 7 to be embedded, and the dovetail groove 71 penetrates the drive plate 222 on the side near the interior of the mounting box 22. The dovetail strips 7 and the dovetail groove 71 not only achieve a fixed connection between the sealing strip 23 and the drive plate 222, but also facilitate the installation and removal of the sealing strip 23. When installing or removing the sealing strip 23, it can be pressed down or pulled out from the top of the mounting box 22.

[0068] Secondly, this application provides a control method for an automatic flood control system for subway ventilation shafts, which includes the following steps:

[0069] S1. On-site sensing: The on-site water level and flood control barrier 2 position information at the corresponding positions of the flood control barrier 2 are collected in real time through water level gauges and position sensors, and sent to the on-site control unit. The on-site control unit determines whether the water level information at different positions has reached the corresponding safety limit position. The on-site control unit transmits the received signal to the station-level monitoring unit. The central-level monitoring unit communicates with the station-level monitoring unit to monitor the station and on-site conditions. The IBP remote control unit can realize remote control of the subway ventilation shaft automatic flood control system.

[0070] S2, Execution of Ascent: When the water level on all four sides of the subway ventilation shaft reaches the warning position, the remote monitoring component alarms according to the water level information, and the rotating motor 31 starts the work preparation.

[0071] When the water level reaches the safety limit position, the remote monitoring component automatically issues a lifting command, drives the corresponding subway ventilation shaft rotation motor 31 to power on, drives the flood control baffle 2 to rise, and automatically stops moving after the flood control baffle 2 has risen to the correct position.

[0072] In manual control, station staff manually input control signals to the electrical control unit through the IBP remote control unit or the on-site control unit, and disconnect the connection between the rotating motor 31 and the bevel gear set 32 ​​by opening the maintenance door 13. They then manually rotate the handwheel 4 to control the raising and lowering of the flood control baffle 2. At this time, manual control has a higher priority than automatic control.

[0073] S3. Execute descent: When the water level drops below the warning level, the remote monitoring component automatically issues a descent command, which drives the rotating motor 31 at the corresponding subway ventilation shaft to power on. The rotating motor 31 drives the flood control baffle 2 to descend. After the flood control baffle 2 has descended to the correct position, it automatically issues a stop command and drives the rotating motor 31 to power off. In manual control, the operator issues a control command to control the flood control baffle 2 to complete the descent action.

[0074] The implementation principle of the automatic flood control system for subway ventilation shafts in this application embodiment is as follows: On-site intelligent sensing components collect real-time water level information and the position information of the flood control baffle 2 at the corresponding position sensor location, and send this information to the remote monitoring component. When the water level reaches the safety limit position, the remote monitoring component automatically issues a lifting command, driving the corresponding subway ventilation shaft rotation motor 31 to power on, causing the flood control baffle 2 to rise until the top surface of the sealing strip 23 abuts against the bottom surface of the waterproof cover 21. At this time, the sealing plate 121 is embedded in the sealing groove 231 to seal and waterproof, improving the sealing performance. After the flood control baffle 2 is detected to have risen to the correct position, the rotation motor 31 automatically stops moving.

[0075] When the water level drops below the warning level, the remote monitoring component automatically issues a descent command, energizing the rotating motor 31 at the corresponding subway ventilation shaft location. The rotating motor 31 then lowers the flood control baffle 2. Once the flood control baffle 2 has reached its designated position, a stop command is automatically issued, de-energizing the rotating motor 31. This helps solve the problem of floodwater backflow from the ventilation shaft opening, improving the reliability of subway safety operations, reducing unnecessary losses, and is intelligent, easy to control, and ensures stable operation and good sealing performance of the flood control ventilation shaft.

[0076] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic flood control system for subway ventilation shafts, characterized in that: Includes mechanical components, intelligent sensing components, and remote monitoring components; The mechanical components are used to perform wind tower flood prevention. The mechanical components include a shell frame (1), a flood baffle (2) and a drive structure (3). The interior of the shell frame (1) is an installation space (11). The installation space (11) has a hollow structure. A cover plate (12) is provided on the top of the shell frame (1). The flood baffle (2) passes through the cover plate (12) and is raised and lowered in the installation space (11) by the drive structure (3). A waterproof cover (21) is provided on the top surface of the flood control baffle (2), and the waterproof cover (21) completely covers the outer edge of the shell frame (1); a long strip-shaped installation box (22) is provided at the bottom of the perimeter wall of the flood control baffle (2), and the installation box (22) is located in the installation space (11); a sealing strip (23) is provided in the installation box (22), and a sealing groove (231) is opened on the top surface of the sealing strip (23); a sealing plate (121) is provided on the bottom surface of the cover plate (12); the installation box (22) rises with the flood control baffle (2) until the top surface of the sealing strip (23) abuts against the bottom surface of the waterproof cover (21), at which time the sealing plate (121) is embedded in the sealing groove (231); The intelligent sensing component includes a water level gauge and a position sensor. The intelligent sensing component is used to detect the corresponding water level and the position information of the flood control baffle (2). The remote monitoring component includes a field control unit, an IBP remote control unit, a station-level monitoring unit, and a central-level monitoring unit. The remote monitoring component is used to receive information from the intelligent sensing component, monitor the operating status of the mechanical component in real time, and issue control commands. The mounting box (22) includes a box body (221) and a drive plate (222). The drive plate (222) is hinged to the top of the box body (221) away from the flood baffle (2) by a torsion spring (224). The sealing strip (23) is fixedly connected to the drive plate (222) on the side away from the flood baffle (2). When the torsion spring (224) is in its natural state, the top of the drive plate (222) is tilted toward the direction away from the flood baffle (2), thereby increasing the opening of the sealing groove (231). Multiple abutment rods (6) are slidably arranged within the installation space (11). The sliding direction of the abutment rods (6) is towards or away from the drive plate (222). When the abutment rods (6) slide towards the drive plate (222), the abutment rods (6) drive the drive plate (222) to slide towards the flood control baffle (2), and the torsion spring (224) deforms. At this time, the opening of the sealing groove (231) decreases, and the inner wall of the sealing groove (231) abuts against the outer wall of the sealing plate (121). When the abutment rods (6) slide away from the drive plate (222), the torsion spring (224) returns to its natural state. An installation rod (122) is provided on the bottom surface of the cover plate (12). The installation rod (122) is located on both sides of the abutment rod (6) in the width direction. A support plate (123) is provided on the bottom surface of the installation rod (122). The abutment rod (6) is located above the support plate (123). A fixing rod (124) is provided on the top surface of the support plate (123). The fixing rod (124) is located on both sides of the abutment rod (6) in the width direction. A guide rod (125) is fixedly connected to the side of the installation rod (122) near the fixing rod (124). The guide rod (125) passes through the fixing rod (124). A return spring (126) is sleeved on the guide rod (125). One end of the return spring (126) abuts against the installation rod (122), and the other end of the return spring (126) abuts against the fixing rod (124). A drive rod (226) is connected to the side wall of the box body (221) away from the flood control baffle (2) by a connecting rod (225). The top end of the drive rod (226) and the end of the abutment (6) away from the flood control baffle (2) are provided with wedge-shaped surfaces (227) that cooperate with each other. When the drive rod (226) rises with the flood control baffle (2), the abutment (6) slides towards the drive plate (222). When the drive rod (226) falls with the flood control baffle (2), the abutment (6) is reset under the action of the return spring (126).

2. The automatic flood control system for subway ventilation shafts according to claim 1, characterized in that: The cover plate (12) includes an inner plate (127), an outer plate (128), and a connecting plate (129). The top surfaces of the inner plate (127) and the outer plate (128) are provided with connecting grooves (1271). The bottom surfaces of the connecting plate (129) are fixedly connected with insert plates (1291). The insert plates (1291) are provided with sealing gaskets on both sides in the thickness direction. The insert plates (1291) are inserted into the connecting grooves (1271). The top surface of the connecting plate (129) is flush with the top surface of the cover plate (12). The inner plate (127) is opened until the top surface of the sealing strip (23) is completely exposed.

3. The automatic flood control system for subway ventilation shafts according to claim 2, characterized in that: The inner plate (127) and the outer plate (128) are provided with multiple mounting grooves (1272) on their top surfaces. The mounting grooves (1272) are connected to the connecting grooves (1271). The connecting plate (129) is fixedly connected to the two sides in the width direction with mounting ears (1293). The mounting ears (1293) are embedded in the mounting grooves (1272) and fixed by countersunk screws.

4. The automatic flood control system for subway ventilation shafts according to claim 2, characterized in that: The sealing strip (23) is embedded in the mounting box (22). Multiple dovetail strips (7) are fixedly connected to the side of the sealing strip (23) near the drive plate (222). A dovetail groove (71) for the dovetail strips (7) to be embedded is provided on the top surface of the drive plate (222). The dovetail groove (71) penetrates the side of the drive plate (222) near the inside of the mounting box (22).

5. The automatic flood control system for subway ventilation shafts according to claim 1, characterized in that: The drive structure (3) is installed in the installation space (11). The drive structure (3) includes a rotating motor (31), a bevel gear set (32), a commutator (33), a screw jack (34), and a connecting shaft (35). The bevel gear set (32) includes a mounting housing (321) and four unit gears (322) installed in the mounting housing (321). The connecting shaft (35) includes a first shaft (351) and a second shaft (352). The bevel gear set (32) is located in the middle of the first shaft (351), and two of the unit gears (322) arranged opposite to each other are connected to the first shaft (351). The rotating shaft of the rotating motor (31) is connected to one of the remaining two unit gears (322). The commutator (33) is located at both ends of the first shaft (351), and the second shaft (352) is located at both ends of the first shaft (351) and is correspondingly connected to the commutator (33). The screw jack (34) is located on the second shaft (352) and is connected to the bottom of the flood control baffle (2) to control the lifting and lowering of the flood control baffle (2).

6. The automatic flood control system for subway ventilation shafts according to claim 5, characterized in that: It also includes a handwheel (4), which is located outside the housing frame (1) and connected to a unit gear (322) away from the rotating motor (31). The housing frame (1) is provided with multiple inspection doors (13), one of which is located at the handwheel (4). The rotating shaft of the rotating motor (31) is detachably connected to the unit gear (322).

7. The automatic flood control system for subway ventilation shafts according to claim 6, characterized in that: The intelligent sensing components are deployed on all four sides of the subway ventilation shaft.

8. The control method for an automatic flood control system for subway ventilation shafts according to claim 7, characterized in that, Includes the following steps: S1. On-site sensing: The water level information and the position information of the flood control baffle (2) at the corresponding position of the position sensor are collected in real time through the water level gauge and position sensor, and sent to the on-site control unit. The on-site control unit determines whether the water level information at different positions has reached the corresponding safety limit position. The on-site control unit transmits the received signal to the station-level monitoring unit. The central-level monitoring unit communicates with the station-level monitoring unit to monitor the station and on-site conditions. The IBP remote control unit realizes remote control of the subway ventilation shaft automatic flood control system. S2, Execution of Ascent: When the water level on all four sides of the subway ventilation shaft reaches the warning position, the remote monitoring component alarms according to the water level information and rotates the motor (31) to start the work preparation. When the water level reaches the safety limit position, the remote monitoring component automatically issues a lifting command, drives the corresponding subway ventilation shaft rotation motor (31) to power on, drives the flood control baffle (2) to rise, and automatically stops moving after the flood control baffle (2) is detected to have risen to the correct position. In manual control, station staff manually input control signals to the electrical control unit through the IBP remote control unit or the field control unit, and disconnect the connection between the rotating motor (31) and the bevel gear set (32) by opening the maintenance door (13), and control the raising and lowering of the flood control baffle (2) by manually turning the handwheel (4). At this time, manual control has a higher priority than automatic control. S3. Execute descent: When the water level drops below the warning level, the remote monitoring component automatically issues a descent command, drives the rotating motor (31) at the corresponding subway ventilation shaft to power on, and the rotating motor (31) drives the flood control baffle (2) to descend. After the flood control baffle (2) is detected to have descended to the correct position, a stop command is automatically issued to drive the rotating motor (31) to power off. In manual control, the operator issues a control command to control the flood control baffle (2) to complete the descent action.

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