A flood control device and flood control method for water conservancy projects

Abstract

The present invention belongs to the technical field of water conservancy engineering, and in particular relates to a flood control device for water conservancy engineering, comprising a mounting frame, a vertical plate three and a baffle plate, the vertical plate three being rotatably assembled on the mounting frame by a circular shaft one, the baffle plate being sleeved outside the vertical plate three and being slidably assembled on the mounting frame up and down, a driving mechanism two for driving one end of the baffle plate to horizontally enter and exit the mounting frame and drive the circular shaft one to rotate is provided between the baffle plate and the vertical plate three, the driving mechanism two comprising a dial, a gear three, a groove wheel and a rack matched with the gear three, the dial and the gear three are coaxially rotatably assembled on the vertical plate two, the groove wheel is fixedly assembled on the circular shaft one and is coaxial with the circular shaft, the dial is provided with a protrusion, the groove wheel has a notch matched with the protrusion, the rack is fixedly arranged on the baffle plate, the gear three is rotated to drive the baffle plate to move horizontally along the lateral extension direction of the vertical plate three, the dial is rotated to drive the baffle plate and the vertical plate three to rotate a predetermined angle, the present invention can solve the technical problems of inconvenient installation of the baffle plate and inflexible use.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy projects, and in particular relates to a water conservancy project flood prevention device and a flood prevention method. Background Art

[0002] A large amount of land is covered by hardened soil, which reduces the chance of natural infiltration of rainwater and makes most of the precipitation discharged only through surface runoff. In order to make full use of limited land resources, people began to develop underground and build various underground facilities. Since underground facilities are lower than the ground, once a flood occurs, a large amount of water will flow into the underground, causing property losses and casualties.

[0003] The Chinese patent application document with publication number CN113356135A discloses a sliding slot type flood wall, including columns and flood baffles; also including a clamping device for fastening the flood baffles, the clamping device including vertical grooves and sliding support rods; corresponding vertical grooves are arranged on both sides of the assembly groove, the vertical grooves divide the side walls of the assembly groove into an internal clamping part and an external sealing part; and clamping grooves are arranged at vertical intervals on the clamping part, the sliding support rod includes a cross bar and an operating rod, the cross bar is mounted in the vertical groove, and can slide vertically along the vertical groove, and can also be matched and nested in the slot; a sealing groove is arranged on the flood baffle, the sealing part is matched and mounted in the sealing groove, and an expansion sealing pad is arranged on the outside of the sealing part. Since the entrances to underground facilities such as underground garages and underground laboratories are relatively wide, for example, the width of a one-way lane in an underground garage should not be less than 3.0 meters, and the width of a two-way lane should not be less than 5.5 meters, the width of the baffle to achieve flood prevention function also needs to be widened accordingly. It is difficult for one person to operate, and multiple people need to collaborate to place the baffle vertically into the corresponding slot. After the installation is completed, the baffle can only be removed by moving it vertically upward from the slot. It cannot meet the needs of temporary passage before the arrival of a flood and is inflexible to use. Summary of the invention

[0004] The invention provides a flood control device for a water conservancy project and a flood control method thereof, so as to solve the technical problems that a baffle is inconvenient to install and inflexible to use.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A flood control device for a water conservancy project comprises a mounting frame, a vertical plate three and a baffle, the vertical plate three is rotatably assembled on the mounting frame through a circular shaft one, the circular shaft one extends up and down and is fixedly mounted on the vertical plate three, the baffle is sleeved outside the vertical plate three and slidably assembled on the mounting frame up and down, a driving mechanism two is provided between the baffle and the vertical plate three, which drives one end of the baffle to horizontally enter and exit the mounting frame and drives the circular shaft one to rotate, the outer wall of the baffle located in the mounting frame is sealed and fitted with the inner wall of the mounting frame, the driving mechanism two comprises a dial, a gear three, a groove wheel and a rack matched with the gear three, the dial and the gear three are coaxially rotatably assembled on the vertical plate two, the groove wheel is fixedly assembled on the circular shaft one and is coaxial with the circular shaft, the dial is provided with a protrusion, the groove wheel has a notch matched with the protrusion, the rack is fixedly mounted on the baffle, the gear three is rotated to drive the baffle to move horizontally along the lateral extension direction of the vertical plate three, and the rotation of the dial is used to drive the baffle and the vertical plate three to rotate a predetermined angle.

[0007] The beneficial effects are: when it is not the flood season, the baffle is located outside the mounting frame and is perpendicular to the mounting frame. At this time, the baffle is opened and will not affect the passage of vehicles and pedestrians; when flood prevention is needed, the baffle is driven to rotate 90 degrees and enter the mounting frame, and then moves a distance away from the mounting frame so that the two baffle end faces fit together, and finally the baffle moves down and contacts the ground. The baffle has a waterproof effect, and there is no need to lift the baffle vertically. The baffle can be rotated open before the flood arrives to meet temporary passage needs. It is flexible and convenient to use.

[0008] Furthermore, a limiting protrusion 1 is fixedly provided on the outer circumference of the vertical plate 3, and a limiting protrusion 2 is fixedly provided on the inner circumference of the baffle plate, and the limiting protrusion 2 is located between the limiting protrusion 1 and the mounting frame.

[0009] The beneficial effect is that the setting of the limiting protrusion 1 and the limiting protrusion 2 can effectively prevent the baffle from being separated from the vertical plate 3, thereby ensuring the stability of the device.

[0010] Furthermore, the dial and gear three are fixedly assembled on circular shaft four, circular shaft four is connected to the output shaft of motor two, and motor two is slidably assembled on the mounting frame; vertical plate two is threadedly connected to the screw extending up and down, and motor one is fixedly assembled on the mounting frame, and motor one drives the screw to rotate around its own axis.

[0011] Furthermore, there are two baffles, and the end faces of the two baffles are sealed and fitted when in contact.

[0012] The beneficial effect is that the baffle is moved and rotated by the motor 1 and the motor 2, and manual operation is not required, so the use is more convenient.

[0013] Furthermore, the baffle is connected to the vertical plate four through a plurality of folding plates, the vertical plate four is parallel to the baffle, and the plurality of folding plates are symmetrically distributed on both sides of the vertical center line of the baffle, one end of the folding plate is rotatably connected to the vertical plate four, and the other end is fixedly connected to a circular shaft two extending up and down, the circular shaft two is rotatably assembled on the baffle around its own axis, and a driving mechanism four is provided between the baffle and the circular shaft two, the driving mechanism four includes a push rod, one end of the push rod protrudes from the baffle, and the other end is connected to a plurality of circular shafts two located on the same baffle, when the end faces of the two baffles are fitted together, the push rod enters the baffle and respectively drives the circular shafts two located on both sides of the center line of the baffle to rotate synchronously in opposite directions, so that the folding plate is unfolded and the vertical plate four is away from the baffle.

[0014] The beneficial effects are: when the baffle is not in use, the folding plate is folded, and the distance between the vertical plate four and the baffle is shorter, reducing the occupied space; when the baffle is in use, the folding plate is unfolded, and the cavity formed by the folding plate, the vertical plate four and the baffle partially or completely covers the floor drain, preventing leaves and other debris from clogging the floor drain, thereby ensuring smooth drainage.

[0015] Furthermore, the driving mechanism four also includes a gear one, a sliding rod, and a rotating rod. The gear one is fixed on the circular shaft two and is coaxial with the circular shaft two. The sliding rod and the push rod are slidably assembled on the baffle along a direction parallel to the vertical plate four and perpendicular to the circular shaft one. There are two sliding rods, each of which is provided with teeth meshing with the gear one. The rotating rod is assembled on the baffle by rotating on the circular shaft three perpendicular to the vertical plate four. The circular shaft three is fixed with a gear two coaxial with the circular shaft three, and the push rod is provided with teeth meshing with the gear two. A torsion spring is mounted on the circular shaft three, and the two ends of the torsion spring are respectively fixed on the circular shaft three and the baffle. A connecting rod is rotatably assembled between the two ends of the rotating rod and the sliding rod.

[0016] The beneficial effect is that when the two baffle end faces facing away from the mounting frame are fitted together, the push rod protruding from the baffle end face enters the baffle, the teeth on the push rod push the rotating rod to rotate, the rotating rod drives the two circular shafts three to rotate synchronously in opposite directions, the folding plate is unfolded to be perpendicular to the baffle, and provides support for the vertical plate four. The push rod for controlling the folding of the folding plate is hidden in the baffle, the folding plate is not easy to fold after being unfolded, and the vertical plate four and the folding plate have strong stability.

[0017] Furthermore, the folding plate and the vertical plate are both provided with water-permeable holes.

[0018] The beneficial effect is that the setting of the water holes facilitates flood water to enter the cavity formed by the folding plate, the vertical plate and the baffle plate. When the water holes are completely blocked, it proves that there are too many debris in the water. If the folding plate is not provided, the debris in the water will clog the floor drain and be difficult to clean. When the water holes are completely blocked, the water retaining effect of the baffle plate can be further enhanced.

[0019] A flood prevention method comprises the following steps:

[0020] ① Start one of the motors 2 to drive the circular shaft 1 to rotate 90 degrees, driving one of the baffles and the vertical plate 3 to rotate 90 degrees. The motor 2 continues to run, driving one end of one of the baffles to enter the mounting frame;

[0021] ② Start the other motor 2 and drive one end of the other baffle into the mounting frame according to step ①;

[0022] ③ Synchronously start the two motors 2 to drive the two baffles to approach synchronously until the ends of the two baffles facing away from the mounting frame are in contact with each other, the folding plate is unfolded, and part or all of the floor drain is located in the cavity enclosed by the folding plate, the vertical plate 4 and the baffle;

[0023] ④ Synchronously start the two motors 1 to drive the two baffles to move downward synchronously until the bottom surfaces of the baffles, the folding plates, and the bottom surfaces of the vertical plates 4 are in contact with the ground.

[0024] The beneficial effects are: the baffle is unfolded when not in use or when temporary passage is needed, and will not block the basement passage; when flood prevention is needed, the end faces of the two baffles are sealed and fitted, the contact surface of the baffle and the mounting frame is sealed and fitted, and the bottom surface of the baffle fits the ground to achieve a waterproof effect, and the baffle is controlled by two motors one and two motors two, which saves manpower and is easy to use; the folding plate and the vertical plate four partially or completely enclose the floor drain to prevent debris from clogging the floor drain.

[0025] The beneficial effects of the present invention are as follows: during flood prevention, the two baffles are sealed against the end faces of the mounting frame, and the baffle located inside the mounting frame is sealed against the inner wall of the mounting frame to ensure a waterproof effect; when the two baffles are in contact, the push rod moves toward the inside of the baffle, the folding plate opens, the folding plate and the fourth vertical plate and the baffle cover part or all of the floor drain, blocking debris outside the floor drain to prevent blockage of the floor drain, and since the push plate is located inside the baffle, the folding plate supports the fourth vertical plate with strong stability; when not in the flood season or when temporarily passing through, the baffle is rotated open by motor one and motor two, so that the passage can pass normally, and the use is flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure when the baffle is closed;

[0028] Figure 3 It is a schematic diagram of the disassembled structure of the mounting frame;

[0029] Figure 4 It is a schematic diagram of the connection structure between the vertical plate 1 and the vertical plate 2;

[0030] Figure 5 It is a schematic diagram of the split structure of the vertical plate 1;

[0031] Figure 6 This is a schematic diagram of the split structure of the second vertical plate;

[0032] Figure 7 is a schematic diagram of the structure of the baffle;

[0033] Figure 8 It is a schematic diagram of the split structure of the baffle, folding plate and vertical plate;

[0034] Fig. 9 Schematic diagram of the installation structure of the push rod;

[0035] Fig.10 It is a schematic diagram of the projection driving the groove wheel to rotate 90 degrees;

[0036] Fig.11 It is a schematic diagram of the baffle being mounted on the second vertical plate.

[0037] Description of reference numerals:

[0038] 1. Mounting frame; 2. Vertical plate three; 3. Baffle; 4. Vertical plate one; 5. Slide groove; 6. Vertical plate two; 7. Circular shaft one; 8. Vertical plate four; 9. Limiting protrusion one; 10. Limiting protrusion two; 11. Folding plate; 12. Circular shaft two; 13. Fixed seat; 14. Gear one; 15. Sliding rod; 16. Rotating rod; 17. Connecting rod; 18. Gear two; 19. Push rod; 20. Circular shaft three; 21. Torsion spring; 22. Screw; 23. Motor one; 24. Gear three; 25. Dial; 26. Grooved wheel; 27. Rack; 28. Circular shaft four; 29. ​​Motor two; 30. Bump; 31. Notch; 32. Locking arc surface; 33. Water permeable hole. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0040] A flood control device for a hydraulic project, such as Figure 1 and Figure 2 As shown, it includes a mounting frame 1, a vertical plate 3 2, a baffle 3, a driving mechanism 1 for driving the vertical plate 3 2 and the baffle 3 to rise and fall synchronously, and a driving mechanism 2 for driving the baffle 3 to leave the mounting frame 1 and rotate.

[0041] like Figure 3 As shown, the mounting frame 1 is a rectangular shell-like structure with a bottom end extending upward and downward and an open side. There are two of them. Vertical plates 4 are fixed on two opposite inner walls of the mounting frame 1. The vertical plates 4 and the inner wall of the mounting frame 1 are enclosed to form a slide groove 5; refer to Figure 1 and Figure 2 The two mounting frames 1 are symmetrically fixedly assembled on both sides of the entrance of the underground garage, and the side openings of the two mounting frames 1 are opposite to each other.

[0042] like Figure 4 As shown, each mounting frame 1 is equipped with a vertical plate 2 6 which is slidably mounted up and down, and the vertical plate 2 6 is rotatably connected to the vertical plate 3 2 through a circular shaft 1 7, referring to Figure 1 and Figure 2 , one end of the vertical plate 2 6 is located in the mounting frame 1, and the vertical plate 2 6 located in the mounting frame 1 is engaged in the slide groove 5. Under the limit of the slide groove 5, the vertical plate 2 6 can only move up and down; Figure 5 and Figure 6 As shown, the round shaft 7 is vertically fixed on one end of the vertical plate 3 2, and the other end of the vertical plate 2 6 located outside the mounting frame 1 is provided with a through hole for the round shaft 7 to be vertically installed therein, and a limiting protrusion 9 is vertically fixed on the top surface of the vertical plate 3 2.

[0043] There are two baffles 3, both of which are located between the two mounting frames 1. One end of the baffle 3 is sleeved on the vertical plate 2 6 and the vertical plate 3 2, as shown in FIG. Figure 7 As shown, a limiting protrusion 2 10 is fixed on the inner top wall of the baffle 3 mounted on the vertical plate 2 6 and the vertical plate 3 2. The baffle 3 is connected to the vertical plate 4 8 through a folding plate 11, and the vertical plate 1 4 is parallel to the baffle 3 1. Figure 5 As shown, one end of the folding plate 11 is fixedly connected to a circular shaft 2 12 extending up and down, a fixing seat 13 is fixedly mounted on the side of the baffle 3, the circular shaft 2 12 is rotatably mounted in the fixing seat 13, and the other end of the folding plate 11 is rotatably connected to the vertical plate 4 8 through a hinge; the baffle 3 is provided with a driving mechanism 3 for driving the two circular shafts 2 12 to rotate synchronously in opposite directions, as shown in FIG. Figure 8 and Fig. 9 As shown, the driving mechanism three includes a gear one 14, a sliding rod 15, a rotating rod 16, a connecting rod 17, a gear two 18, and a push rod 19. The gear one 14 is fixed on the circular shaft two 12 and is coaxial with the circular shaft two 12. The sliding rod 15 is slidably assembled on the baffle 3 in a direction perpendicular to the circular shaft two 12 and parallel to the vertical plate four 8. The sliding rod 15 is provided with teeth that mesh with the gear one 14. The middle part of the rotating rod 16 is rotatably assembled on the baffle 3 through the circular shaft three 20 perpendicular to the vertical plate four 8. A torsion spring 21 is mounted on shaft three 20, and the two ends of the torsion spring 21 are respectively fixed on the baffle 3 and the circular shaft three 20; the connecting rod 17 is rotatably connected between the end of the rotating rod 16 and the sliding rod 15, the gear two 18 is fixedly assembled on the circular shaft three 20 and is coaxial with the circular shaft three 20, and the push rod 19 is slidably assembled on the baffle 3 in a direction perpendicular to the circular shaft two 12 and parallel to the vertical plate four 8. One end of the push rod 19 is provided with teeth engaging with the gear two 18, and the other end protrudes from the end face of the baffle 3 away from the mounting frame 1.

[0044] like Figure 3As shown, the driving mechanism 1 includes a screw 22 and a motor 23. The screw 22 is threadedly connected to the vertical plate 4, and the motor 23 is fixedly assembled on the mounting frame 1. The screw 22 is connected to the output shaft of the motor 23, and the motor 23 drives the screw 22 to rotate around its own axis.

[0045] like Figure 4 , Figure 5 , Figure 6 As shown, the driving mechanism 2 includes a gear 3 24, a dial 25, a groove wheel 26, and a rack 27. A circular shaft 4 28 extending up and down is rotatably assembled on the vertical plate 1 4, and the circular shaft 4 28 is driven to rotate by a motor 29. The motor 29 is fixedly assembled on the vertical plate 2 6. The gear 3 24 and the dial 25 are fixedly assembled on the circular shaft 4 28 and rotate coaxially with the circular shaft 4 28. The gear 3 24 is close to the vertical plate 1 4, and a protrusion 30 is fixedly connected to the dial 25; the groove wheel 26 is fixedly assembled on the circular shaft 1 7, and a notch 31 and a locking arc surface 32 are provided on the groove wheel 26. The protrusion 30 is matched with the notch 31, and the locking arc surface 32 is fitted with the arc-shaped outer peripheral surface of the dial 25. Every time the dial 25 rotates one circle, the groove wheel 26 is driven to rotate 90 degrees; the rack 27 is fixedly assembled on the baffle 3, and the rack 27 is matched with the gear 3 24.

[0046] The usage of this device is:

[0047] ① Normally open state, such as Figure 1 As shown, at this time, the baffle 3 is in an open state, the limiting protrusion 1 9 is in contact with the limiting protrusion 2 10, the limiting protrusion 1 9 is located between the limiting protrusion 2 10 and the mounting frame 1, the baffle 3 is mounted on the vertical plate 2 6, the protrusion 30 is located in one of the slots 31, the opening of the slot 31 is opposite to the circular axis 4 28, the vertical plate 1 4 and the vertical plate 2 6 are perpendicular, the baffle 3 is in contact with the mounting frame 1, the push rod 19 protrudes from the baffle 3, and there is a gap between the bottom end surface of the baffle 3 and the ground.

[0048] ② When flood prevention is needed, start one of the motors 29, drive the circular shaft 4 28 and the dial 25 to rotate 90 degrees, the convex block 30 drives the groove wheel 26 and the circular shaft 1 7 to rotate 90 degrees, the circular shaft 1 7 drives the vertical plate 2 6 and the baffle 3 to rotate 90 degrees, and the rack 27 rotates to mesh with the gear 3 24, as shown in FIG. Fig.10 As shown;

[0049] ③If Fig.11 As shown, the motor 29 continues to run, driving the circular shaft 4 28, the dial 25 and the gear 3 24 to continue to rotate, and the gear 3 24 drives the rack 27 to move toward the mounting frame 1, so that the baffle 3 is sleeved on the vertical plate 2 6; in step ③, the protrusion 30 does not enter the notch 31;

[0050] ④ Rotate another baffle 3 according to step ② and step ③; after both baffles 3 are rotated, there is a gap between the end surfaces of the two baffles 3 facing away from the mounting frame 1;

[0051] ⑤ Synchronously start the two motors 29 in the opposite direction, and the gear 3 24 drives the rack 27 to move away from the mounting frame 1, thereby making the two baffles 3 approach each other until the opposite end surfaces of the two baffles 3 are in contact with each other. Figure 2 As shown; during the process of the two baffles 3 approaching each other, the push rod 19 is pushed and moves toward the inside of the baffle 3, the teeth on the push rod 19 drive the gear 2 18 and the circular shaft 3 20 to rotate, the circular shaft 3 20 drives the two sliding rods 15 to move synchronously toward the direction of the circular shaft 3 20 through the rotating rod 16 and the connecting rod 17, the teeth on the sliding rod 15 drive the gear 1 14 to rotate, the gear 1 14 drives the folding plate 11 to unfold to be perpendicular to the baffle 3, and the torsion spring 21 generates elastic potential energy to make the circular shaft 3 20 rotate in the opposite direction;

[0052] ⑥ Start the motor 23 and drive the screw 22 to rotate. The screw 22 drives the folding plate 11 and the baffle 3 to move downward synchronously until the bottom surfaces of the baffle 3, the folding plate 11 and the vertical plate 48 are in contact with the ground. At this time, the baffle 3 is in working state, and a part of the floor drain is located in the gap enclosed by the folding plate 11, the vertical plate 4 and the baffle 3. The vertical plate 4 and the folding plate 11 have multiple water-permeable holes 33 to block the debris such as leaves and plastics that are easy to block the floor drain outside the floor drain; when all the water-permeable holes 33 are blocked, the water-blocking effect of the baffle 3 can be further enhanced; in order to prevent water leakage, sealing strips are fixed between the contact surfaces of the two baffles 3 and between the contact surfaces between the baffle 3 and the mounting frame 1.

[0053] After use, start motor 1 23 in reverse to drive the screw 22 to rotate in the opposite direction. The screw 22 drives the folding plate 11 and the baffle 3 to move up synchronously, so that the bottom surface of the folding plate 11, the bottom surface of the vertical plate 48, and the bottom surface of the baffle 3 are separated from the ground; then start one of the motors 29 to drive one of the baffles 3 to contact the vertical plate 1 4. At this time, a gap is generated between the two baffles 3 for the other baffle 3 to rotate. At the same time, under the action of the elastic potential energy of the torsion spring 21, the push rod 19 extends out of the baffle 3, and the folding plate 11 is folded; then start another motor 29 to drive the other baffle 3 to move out of the mounting frame 1 and rotate to the state of step ①; finally, start one of the motors 29 to drive one of the baffles 3 to leave the mounting frame 1 and rotate to the state of step ①.

Claims

1. A flood control device for a hydraulic project, characterized in that: The invention comprises a mounting frame, a vertical plate three and a baffle plate, wherein the vertical plate three is rotatably assembled on the mounting frame through a circular shaft one, the circular shaft one extends up and down and is fixedly mounted on the vertical plate three, the baffle plate is sleeved outside the vertical plate three and is slidably assembled on the mounting frame up and down, a driving mechanism two is arranged between the baffle plate and the vertical plate three for driving one end of the baffle plate to horizontally enter and exit the mounting frame and drive the circular shaft one to rotate, the outer wall of the baffle plate located in the mounting frame is sealed and fitted with the inner wall of the mounting frame, the driving mechanism two comprises a dial, a gear three, a groove wheel and a rack matched with the gear three, the dial and the gear three are coaxially rotatably assembled on the vertical plate two, the groove wheel is fixedly assembled on the circular shaft one and is coaxial with the circular shaft, a protrusion is arranged on the dial, the groove wheel has a notch matched with the protrusion, the rack is fixedly mounted on the baffle plate, the gear three is rotated to drive the baffle plate to move horizontally along the lateral extension direction of the vertical plate three, and the dial is rotated to drive the baffle plate and the vertical plate three to rotate a predetermined angle; A limiting protrusion 1 is fixedly arranged on the outer circumference of the vertical plate 3, and a limiting protrusion 2 is fixedly arranged on the inner circumference of the baffle plate, and the limiting protrusion 2 is located between the limiting protrusion 1 and the mounting frame; The dial and gear three are fixedly assembled on the circular shaft four, the circular shaft four is connected to the output shaft of the motor two, and the motor two is slidably assembled on the mounting frame; the vertical plate two is threadedly connected to the screw extending up and down, and the motor one is fixedly assembled on the mounting frame, and the motor one drives the screw to rotate around its own axis.

2. A flood control device for water conservancy projects according to claim 1, characterized in that: There are two baffles, and the end faces of the two baffles are sealed and fitted when they are in contact.

3. A flood control device for water conservancy projects according to claim 2, characterized in that: The baffle is connected to the vertical plate four through multiple folding plates, the vertical plate four is parallel to the baffle, and the multiple folding plates are symmetrically distributed on both sides of the vertical center line of the baffle. One end of the folding plate is rotatably connected to the vertical plate four, and the other end is fixedly connected to the circular shaft two extending up and down. The circular shaft two is rotated around its own axis and assembled on the baffle. A driving mechanism four is provided between the baffle and the circular shaft two. The driving mechanism four includes a push rod, one end of the push rod protrudes from the baffle, and the other end is connected to multiple circular shafts two located on the same baffle. When the end faces of the two baffles are fitted together, the push rod enters the baffle and drives the circular shafts two located on both sides of the center line of the baffle to rotate synchronously in the opposite direction, so that the folding plate is unfolded and the vertical plate four is away from the baffle.

4. A flood control device for water conservancy projects according to claim 3, characterized in that: The driving mechanism four also includes gear one, a sliding rod, and a rotating rod. The gear one is fixed on the circular shaft two and is coaxial with the circular shaft two. The sliding rod and the push rod are slidably assembled on the baffle along a direction parallel to the vertical plate four and perpendicular to the circular shaft one. There are two sliding rods, each of which is provided with teeth meshing with the gear one. The rotating rod is assembled on the baffle through the circular shaft three that is perpendicular to the vertical plate four. The circular shaft three is fixed with a gear two that is coaxial with the circular shaft three. The push rod is provided with teeth meshing with the gear two. The circular shaft three is provided with a torsion spring. The two ends of the torsion spring are respectively fixed on the circular shaft three and the baffle. A connecting rod is rotatably assembled between the two ends of the rotating rod and the sliding rod.

5. A flood control device for water conservancy projects according to claim 4, characterized in that: The folding plate and the vertical plate are both provided with water-permeable holes.

6. A flood prevention method, using the water conservancy engineering flood prevention device according to any one of claims 2 to 5, characterized in that: The following steps are involved: ① Start one of the motors 2 to drive the circular shaft 1 to rotate 90 degrees, driving one of the baffles and the vertical plate 3 to rotate 90 degrees. The motor 2 continues to run, driving one end of one of the baffles to enter the mounting frame; ② Start the other motor 2 and drive one end of the other baffle into the mounting frame according to step ①; ③ Synchronously start the two motors 2 to drive the two baffles to approach synchronously until the ends of the two baffles facing away from the mounting frame are in contact with each other, the folding plate is unfolded, and part or all of the floor drain is located in the cavity enclosed by the folding plate, the vertical plate 4 and the baffle; ④ Synchronously start the two motors 1 to drive the two baffles to move downward synchronously until the bottom surfaces of the baffles, the folding plates, and the bottom surfaces of the vertical plates 4 are in contact with the ground.

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