Steel Dam Gate Driven By a Hydraulic Motor

Abstract

A steel dam gate driven by a hydraulic motor, comprising a bottom transverse axis and gate leaves fixedly arranged along the length direction of the bottom transverse axis, both ends of the bottom transverse axis are provided with operating chambers, and both ends of the bottom transverse axis extend into the corresponding operating chambers, and are fixedly arranged with the output shaft of the hydraulic motor, the bottom transverse axis is rotatably connected to the two operating chambers. When the steel dam gate is in the open state, the gate leaves are in a horizontal state, at this time, the gate slab moves upward and is in an open state, water from upstream passes through the gap between the gate leaves normally, and also passes through the gap between the bottom transverse axis and the sill.

Claims

1. A steel dam gate driven by a hydraulic motor, comprising a bottom transverse axis (1) and gate leaves (2) fixedly arranged along the length direction of the bottom transverse axis (1), characterized in that: both ends of the bottom transverse axis (1) are provided with operating chambers (3), both ends of the bottom transverse axis (1) extend into the corresponding operating chambers (3), and are fixedly arranged with the output shaft of the hydraulic motor (4), and the bottom transverse axis (1) is rotatably connected to the two operating chambers (3), there are several bearing housings (5) rotatably connected to the bottom transverse axis (1) located between the two operating chambers (3), each of which is a bearing housing, the lower end of bearing housing (5) is fixedly connected to the sill (6) located below the bottom transverse axis (1); Each of the bearing housings (5) is equipped with sliding gate slabs (7) on both sides in the up-down direction, the gate slabs (7) between each adjacent bearing housing (5) are tightly attached to the corresponding bearing housing (5), and the gate slabs (7) on both sides are tightly attached to the corresponding bearing housing (5) and the operating chamber (3).

2. The steel dam gate driven by a hydraulic motor according to claim 1, characterized in that a downward inclined drive rod (8) is provided on the bottom transverse axis (1) corresponding to the position of the gate slab (7), and the drive rod (8) is threaded through the corresponding gate slab (7).

3. The steel dam gate driven by a hydraulic motor according to claim 2, characterized in that a through hole (9) adapted to the drive rod (8) is opened at a position corresponding to the drive rod (8) on the gate slab (7), and one end of the through hole (9) opened on the front side of the gate slab (7) is larger than one end of the through hole (9) opened on the rear side of the gate slab (7) along the height direction of the gate slab (7).

4. The steel dam gate driven by a hydraulic motor according to claim 3, characterized in that: an arcuate groove (11) is opened at the position corresponding to the bottom transverse axis (1) and the drive rod (8), the inner bottom wall of the arcuate groove (11) is parallel to the outer surface of the bottom transverse axis (1), the fan angle of the arcuate groove (11) is equal to the residual angle of the angle between the drive rod (8) and the sill (6), and guide rails (12) parallel to the inner bottom wall of the arcuate groove (11) are fixedly provided in the middle sections of the inner walls on both sides of the arcuate groove (11), and the left and right sides of the drive rod (8) are both opened with guide rails (12) that are opposite to the guide rails (12), the drive rod (8) is slidably connected to the bottom transverse axis (1) through a guide rail (12) and a guide groove adapted to it.

5. The steel dam gate driven by a hydraulic motor according to claim 4, characterized in that a groove (13) is fixedly provided at the position corresponding to the gate slab (7) on the upper end surface of the sill (6), and when the gate slab (7) moves downward to contact the sill (6), the lower end surface of the gate slab (7) is located inside the groove (13).

6. The steel dam gate driven by a hydraulic motor according to claim 5, characterized in that a channel (14) with the same length as the left and right direction of the gate slab (7) is opened on the inner bottom wall of the groove (13) at a position corresponding to the gate slab (7), and a guide rod (15) is fixedly provided on the lower end surface of each gate slab (7), and a baffle plate (16) with the same length as the left and right direction of the gate slab (7) is fixedly provided on the bottom end of each guide rod (15).

7. The steel dam gate driven by a hydraulic motor according to claim 6, characterized in that a cavity (17) is fixedly provided at the position corresponding to the baffle plate (16) on the lower end surface of the sill (6), and the interior of the cavity (17) forms a closed chamber with the sill (6), a hole of the same size as the channel (14) is opened on the sill (6).

8. The steel dam gate driven by a hydraulic motor according to claim 7, characterized in that: a silt retention chamber (18) is fixedly provided on the upper end surface of the sill (6) located at the rear side of the groove (13), and the upper end surface of the silt retention chamber (18) is provided with several parallel circular grooves (19) along the left and right directions, each circular groove (19) is provided with a dredging mechanism, which includes a rotating shaft (20) connected to both operating chambers (3) for rotation, several agitatores (21) are uniformly provided on the rotating shaft (20), and the dredging mechanism also includes a drive mechanism (22) located in the operating chamber (3), the driving end of the drive mechanism (22) passes through the operating chamber (3) and is fixedly arranged with the rotating shaft (20).

9. The steel dam gate driven by a hydraulic motor according to claim 8, characterized in that a first contact point (23) is fixedly provided on the outer surface of the bottom transverse axis (1) located inside the operating chamber (3), and a second contact point is fixedly provided on the inner wall of the operating chamber (3).

10. The steel dam gate driven by a hydraulic motor according to claim 3, characterized in that a cover (10) is fixedly provided on the rear side of the gate slab (7), and the drive rod (8) penetrates the through hole (9) of the sill (6) and enters the cover (10), and a indicator light (27) is provided on the upper end face of each operating chamber (3).

Description

DESCRIPTION OF DRAWINGS

[0029] FIG. 1 is a schematic diagram of the overall three-dimensional structure in the embodiment of the present application;

[0030] FIG. 2 is a schematic diagram of the front structure in the embodiment of the present application;

[0031] FIG. 3 is a schematic diagram of the three-dimensional structure of the cover in the embodiment of the present application;

[0032] FIG. 4 is a schematic diagram of the three-dimensional structure of the dredging mechanism in the embodiment of the present application;

[0033] FIG. 5 is a schematic diagram of the three-dimensional structure of the sludge containment body in the embodiment of the present application;

[0034] FIG. 6 is a schematic diagram of the three-dimensional structure of the gate being lifted upwards when the gate is opened in the embodiment of the present application;

[0035] FIG. 7 is a schematic diagram of the three-dimensional structure of the cavity in the embodiment of the present application;

[0036] FIG. 8 is a schematic diagram of the three-dimensional structure of the groove and the operating chamber in the embodiment of the present application;

[0037] FIG. 9 is a schematic diagram of the top view structure of the groove in the embodiment of the present application;

[0038] FIG. 10 is a schematic diagram of the three-dimensional structure of the drive rod in the embodiment of the present application;

[0039] FIG. 11 is a schematic diagram of the three-dimensional structure of the through hole on the front side of the gate slab in the embodiment of the present application;

[0040] FIG. 12 is a schematic diagram of the three-dimensional structure of the through hole on the rear side of the gate slab in the embodiment of the present application;

[0041] FIG. 13 is an enlarged schematic diagram of a partial structure in the embodiment of the present application.

[0042] Appendix: 1. Bottom transverse axis; 2. Gate leaf; 3. Operating chamber; 4. Hydraulic motor; 5. Bearing housing; 6. Sill; 7. Gate slab; 8. Drive rod; 9. Through hole; 10. Cover; 11. Arcuate groove; 12. Guide rail; 13. Groove; 14. Channel; 15. Guide rod; 16. Baffle plate; 17. Cavity; 18. Silt retention chamber; 19. Circular groove; 20. Rotating shaft; 21. Agitator; 22. Drive mechanism; 23. First contact point; 24. Restrictor strip; 25. Sliding rail; 26. Guide slot; 27. Indicator light.

DETAILED DESCRIPTION OF THE INVENTION

[0043] Further detailed explanation of the present application will be provided in conjunction with FIGS. 1-13.

[0044] The present embodiment discloses a steel dam gate driven by a hydraulic motor, comprising a bottom transverse axis 1 and gate leaves 2 fixedly arranged along the length direction of the bottom transverse axis 1. Both ends of the bottom transverse axis 1 are provided with operating chambers 3, and both ends of the bottom transverse axis 1 extend into the corresponding operating chambers 3, and are fixedly arranged with the output shaft of a hydraulic motor 4. The bottom transverse axis 1 is rotatably connected to two operating chambers 3, and there are several bearing housings 5 rotatably connected to the bottom transverse axis 1 located between the two operating chambers 3. The lower end surface of each bearing housing 5 is fixedly connected to a sill 6 arranged below the bottom transverse axis 1;

[0045] When the gate is opened, the hydraulic motor 4 rotates to drive the bottom transverse axis 1 to rotate 90 degrees forward, and the bottom transverse axis 1 drives the gate leaf 2 to flip 90 degrees forward, so that the gate leaf 2 is in a horizontal state, achieving the purpose of opening the gate. The rear side of the gate leaf 2 is upstream, and the front side of the gate leaf 2 is downstream. The upstream water flows through the upper part of the gate leaf 2 in a horizontal state to the downstream; when the gate is closed, the hydraulic motor 4 rotates to drive the bottom transverse axis 1 to rotate 90 degrees to the rear, and the bottom transverse axis 1 drives the gate leaf 2 to flip 90 degrees to the rear, so that the gate leaf 2 is in a vertical state, achieving the purpose of closing the gate and blocking the upstream water.

[0046] Due to the support of multiple bearing housings 5 in the middle of the bottom transverse axis 1 of the steel dam gate, there will be a gap between the bottom transverse axis 1 and the sill 6. The existing technical solution to this problem is to pour concrete into the gap between the bottom transverse axis 1 and the sill 6, so that the concrete solidifies and forms a solid body. The gap between the bottom transverse axis 1 and the sill 6 is closed, which plays a role in intercepting water; However, in use, the bottom of the rear side of gate leaf 2 often accumulates a large amount of sediment due to the concrete pouring seal. Therefore, after the steel dam gate is used for a long time, it is necessary to regularly clean the sediment at the bottom of the rear side of gate leaf 2, which is time-consuming and laborious.

[0047] In order to solve the above problems, in this embodiment, gate slabs 7 are installed on both sides of each bearing housing 5 to slide in the up-down direction. The gate slabs 7 between adjacent bearing housings 5 are tightly attached to the corresponding bearing housing 5, and the gate slabs 7 on both sides are tightly attached to the corresponding bearing housing 5 and the operating chamber 3; when the steel dam gate is in a closed state, the gate leaf 2 is in a vertical state. At this time, the lower end surface of the gate slab 7 contacts the upper end surface of the sill 6, sealing the gap between the bottom transverse axis 1 and the sill 6 to achieve the function of water interception. In this state, while achieving water interception, there will also be silt accumulation at the position where the gate slab 7 contacts the sill 6 on the rear side; when the steel dam gate is in the open state, the gate leaf 2 is in a horizontal state. At this time, the gate slab 7 moves upward and is in an open state. That is, the seal between the gate slab 7 and the sill 6 is released, and the water from upstream passes through the upper part of the gate leaf 2 normally. At the same time, it also passes through the gap between the bottom transverse axis 1 and the sill 6, so that the water flow washes away the sediment accumulated at the contact position between the rear side of the gate slab 7 and the sill 6, achieving the function of dredging when the steel dam gate is in the open state.

[0048] In order to increase the smoothness of the up and down movement of the gate slab 7, in this embodiment, the left and right sides of the bearing housing 5 are fixedly provided with restrictor strips 24, and each restrictor strip 24 is fixedly provided with a sliding rail 25 on one side close to the gate slab 7. The left and right sides of each gate slab 7 correspond to the sliding rail 25 and are provided with guide slots 26 in the up and down directions that are compatible with the sliding rail 25. The gate slab 7 is slidably connected to the corresponding restrictor strip 24 in the up and down directions through the sliding rail 25 and the guide slot 26; when the gate slab 7 moves up and down, it slides up and down in the guide slot 26 through the sliding rail 25, which increases the smoothness of the gate slab 7's up and down sliding.

[0049] In order to achieve the purpose of lifting the gate slab 7 simultaneously when opening the gate, in this embodiment, a downward inclined drive rod 8 is provided on the bottom transverse axis 1 corresponding to the position of the gate slab 7, and the drive rod 8 is threaded through the corresponding gate slab 7; when the gate is opened, the bottom transverse axis 1 rotates 90 degrees forward, which in turn drives the gate leaf 2 to flip 90 degrees forward, so that the gate leaf 2 is in a horizontal state, achieving the purpose of opening the gate. At the same time, the bottom transverse axis 1 drives the drive rod 8 to synchronously rotate 90 degrees, which in turn drives the gate slab 7 to move upward, achieving the purpose of releasing the seal between the bottom transverse axis 1 and the sill 6. In addition, when the drive rod 8 rotates and drives the gate slab 7 to move upward, the drive rod 8 also extends longer relative to the rear side of the gate slab 7, and the drive rod 8 and the gate slab 7 move relative to each other.

[0050] In order to achieve the purpose of non-interference between the rotation of the drive rod 8 and the linear movement of the gate slab 7 when the drive rod 8 rotates and drives the gate slab 7 to move upward or downward, in this embodiment, a through hole 9 adapted to the drive rod 8 is opened at the position corresponding to the drive rod 8 on the gate slab 7. One end of the through hole 9 opened on the front side of the gate slab 7 is larger than one end of the through hole 9 opened on the rear side of the gate slab 7 along the height direction of the gate slab 7; when the bottom transverse axis 1 rotates and drives the drive rod 8 to rotate, the drive rod 8 drives the gate slab 7 to move upward. The angle between the drive rod 8 and the gate slab 7 will change, causing the shaft of the drive rod 8 to move along the height direction of the gate slab 7 at one end of the through hole 9 located on the front side of the gate slab 7. At the same time, when the drive rod 8 rotates and drives the gate slab 7 to move upward, the drive rod 8 will also extend longer relative to the rear side of the gate slab 7.

[0051] Due to the through hole 9 provided on the gate slab 7, when the gate slab 7 moves downward and comes into contact with the sill 6 to achieve sealing between the bottom transverse axis 1 and the sill 6, upstream water may flow from the through hole 9 to the downstream. To solve this problem, in this embodiment, a cover 10 is fixedly provided on the rear side of the gate slab 7, and the drive rod 8 passes through the through hole 9 of the sill 6 and enters the cover 10, achieving sealing at one end of the through hole 9 located on the rear side of the gate slab 7 through the cover 10.

[0052] If the drive rod 8 is set on the bottom transverse axis 1 in a state perpendicular to the sill 6, then when the bottom transverse axis 1 flips 90 degrees forward to open the gate, the drive rod 8 rotates 90 degrees with the bottom transverse axis 1. At this time, the drive rod 8 is in a horizontal state, and the height of the drive rod 8 will not exceed the upper end face of the gate leaf 2 in the horizontal state, which will not affect the normal use of the steel dam gate. However, in the above scheme, the drive rod 8 is set to tilt downward. Therefore, when the bottom transverse axis 1 flips 90 degrees forward to open the gate, the drive rod 8 is in an upward tilted state, which has an adverse effect on the use of the steel dam gate. In order to solve this problem, in this embodiment, the positions corresponding to the bottom transverse axis 1 and the drive rod 8 are provided with arcuate groove 11, the inner bottom wall of arcuate groove 11 is parallel to the outer surface of the bottom transverse axis 1, and the fan angle of arcuate groove 11 is equal to the remaining angle of the angle between the drive rod 8 and the sill 6, The middle sections of the inner walls on both sides of the arcuate groove 11 are fixedly provided with guide rails 12 parallel to the bottom wall of the arcuate groove 11. The left and right sides of the drive rod 8 are provided with guide grooves adapted to the guide rails 12. The drive rod 8 is slidably connected to the bottom transverse axis 1 through the guide rails 12 and the guide grooves; due to the limitation of the guide rail 12, when the drive rod 8 slides inside the arcuate groove 11, it will rotate around the central axis of the bottom transverse axis 1; when in use, when the gate is opened, the bottom transverse axis 1 rotates 90 degrees forward, causing the gate leaf 2 to rotate 90 degrees forward and be in a horizontal state. At the same time, the bottom transverse axis 1 rotates and drives the gate slab 7 to move upward through the drive rod 8. When the bottom transverse axis 1 starts to rotate, due to the weight limitation of the gate slab 7, the drive rod 8 will slide inside the arcuate groove 11 until the top end of the drive rod 8 moves to the bottom end of the arcuate groove 11. At this time, the drive rod 8 is restricted from sliding by the bottom end of the arcuate groove 11. As the bottom transverse axis 1 continues to rotate, the drive rod 8 will drive the gate slab 7 to move upward. When the bottom transverse axis 1 rotates 90 degrees, the drive rod 8 is located exactly in a horizontal position, and the gate slab 7 is also moving upward at this time. By moving the set distance, upstream water flows through the gap between gate leaf 2 and the gap between gate slab 7 and sill 6, make the water flow carry away the silt accumulated at the contact position between the rear side of the gate slab 7 and the sill 6, achieving the goal of simultaneous dredging with each opening of the gate; when the gate is closed, the bottom transverse axis 1 rotates 90 degrees to the rear, causing the gate leaf 2 to rotate 90 degrees to the rear and be in a vertical state. At the same time, the bottom transverse axis 1 rotates and drives the gate slab 7 to move downwards through the drive rod 8. When the bottom transverse axis 1 starts to rotate, due to the weight of the gate slab 7, the gate slab 7 may drive the drive rod 8 to move downwards until the lower end surface of the gate slab 7 contacts the upper end surface of the sill 6. The gate slab 7 no longer moves downwards. At this time, the bottom transverse axis 1 continues to rotate, and the drive rod 8 is blocked by the gate slab 7. The top end of the drive rod 8 will slide in the arcuate groove 11 until the top end of the drive rod 8 moves to the top end of the rear side. At this time, the bottom transverse axis 1 rotates exactly 90 degrees. The second movement mode of drive rod 8, when the bottom transverse axis 1 starts to rotate backwards, the top of the drive rod 8 slides inside the arcuate groove 11, until the top of the drive rod 8 reaches the top of the arcuate groove 11, the bottom transverse axis 1 continues to rotate, and the drive rod 8 will no longer slide, thereby driving the gate slab 7 to move downward until the lower end face of the gate slab 7 contacts the sill 6. At this point, the bottom transverse axis 1 rotates exactly 90 degrees.

[0053] In order to ensure the water tightness of the contact position between the gate slab 7 and the sill 6 when the gate slab 7 is located at the bottom position, in this embodiment, a groove 13 is fixedly set at the position corresponding to the gate slab 7 on the upper end surface of the sill 6. When the gate slab 7 moves downward to contact the sill 6, the lower end surface of the gate slab 7 is located inside the groove 13, achieving better water tightness between the gate slab 7 and the sill 6 and preventing water from flowing through the gap between the gate 7 and the sill 6 when the gate is closed.

[0054] Due to the installation of groove 13, during the use of this device, the position where the rear side of groove 13 contacts sill 6 will accumulate silt. When gate slab 7 moves upward and the upstream water flows through the gap between gate slab 7 and groove 13 to achieve the function of dredging, silt may enter groove 13. When gate slab 7 moves downward next time, it will not be able to fully enter groove 13 due to the presence of silt inside groove 13. To solve this problem, in this embodiment, a channel 14 with the same length in the left and right directions as gate slab 7 is opened on the inner bottom wall of groove 13 corresponding to gate slab 7. Each lower end of gate slab 7 is fixedly provided with a guide rod 15, and each guide rod 15 The bottom of the gate is fixedly equipped with a baffle plate 16 that is the same length as the gate slab 7 in the left and right directions; when the gate slab 7 moves upward, it synchronously drives the baffle plate 16 to move upward through the guide rod 15. When the gate slab 7 moves upward to its position, the upper end surface of the baffle plate 16 is exactly flush with the upper end surface of the groove 13. At this time, when the upstream river water passes between the gate slab 7 and the groove 13, the silt carried will not enter the groove 13, ensuring that the next time the gate slab 7 moves downward, it can completely enter the groove 13.

[0055] Due to the contact between the lower end surface of the sill 6 and the riverbed, the guide rod 15 and the baffle plate 16 will pass through the sill 6 and enter the riverbed when they move downwards. To solve this problem, in this embodiment, a cavity 17 is fixedly set at the position corresponding to the baffle plate 16 on the lower end surface of the sill 6. The interior of the cavity 17 forms a closed chamber with the sill 6. The sill 6 is provided with a hole of the same size as the channel 14. When the gate slab 7 moves downwards, the gate slab 7 drives the baffle plate 16 to move downwards through the guide rod 15. The baffle plate 16 will pass through the channel 14 of the groove 13 and the hole of the sill 6 and enter the closed chamber inside the cavity 17.

[0056] Due to the installation of groove 13, which has a set height, by moving gate slab 7 upwards, the upstream river water flows through the gap between gate slab 7 and groove 13 while dredging. Some of the silt will be blocked by groove 13 and continue to remain at the position where the rear side of groove 13 contacts sill 6. To solve this problem, in this embodiment, a silt retention chamber 18 is fixedly installed on the upper end surface of sill 6 located at the rear side of groove 13. The upper end surface of silt retention chamber 18 is provided with several parallel circular grooves 19 in the left and right directions, and each circular groove 19 is equipped with a dredging mechanism. The dredging mechanism includes a rotating shaft 20 that is rotatably connected to both operating chambers 3. Several agitatores 21 are uniformly arranged on the rotating shaft 20, and the dredging mechanism also includes a drive mechanism 22 located inside the operating chamber 3, the driving end of the drive mechanism 22 passes through the operating chamber 3 and is fixedly arranged with the rotating shaft 20; when the gate is opened, the bottom transverse axis 1 drives the gate leaf 2 to rotate 90 degrees forward, and at the same time, the bottom transverse axis 1 drives the gate slab 7 to move upward through the drive rod 8. While the upstream river water flows through the upper part of the gate leaf 2, a part of the river water flows through the gap between the gate slab 7 and the groove 13, causing the river water flowing through the gap between the gate slab 7 and the groove 13 to carry away the silt located in the silt retention chamber 18 behind the groove 13. At this time, the drive mechanism 22 drives the rotating shaft 20 to rotate, and the rotating shaft 20 drives the agitator 21 to rotate, so that the agitator 21 stirs up the silt trapped in the circular groove 19 of the silt retention chamber 18, making it easier for the river water to carry it away and flow downstream, achieving the better purpose of dredging.

[0057] In order to achieve the purpose of starting the drive mechanism 22 when the gate is opened and stopping the drive mechanism 22 when the gate is closed, in this embodiment, a first contact point 23 is fixedly provided on the outer surface of the bottom transverse axis 1 located inside the operating chamber 3, and a second contact point is fixedly provided on the inner wall of the operating chamber 3. When the bottom transverse axis 1 drives the gate leaf 2 to rotate 90 degrees forward to open the gate, the bottom transverse axis 1 simultaneously drives the first contact point 23 to rotate 90 degrees and make contact with the second contact point. The circuit of the drive mechanism 22 is connected, and the drive mechanism 22 is started to drive the dredging mechanism for dredging. When the bottom transverse axis 1 drives the gate leaf 2 to rotate 90 degrees backward to close the gate, the bottom transverse axis 1 simultaneously drives the first contact point 23 to rotate 90 degrees, which is in conjunction with the second contact point. Contact detachment, drive mechanism 22 stops.

[0058] In order to achieve the function of warning, each operating chamber 3 is equipped with a indicator light 27 on the upper end face. At night, the indicator light 27 lights up to serve as a warning for the waterway.

[0059] The working principle of the present invention is that when the gate is opened, the hydraulic motor 4 rotates to drive the bottom transverse axis 1 to rotate 90 degrees forward, and the bottom transverse axis 1 drives the gate leaf 2 to flip 90 degrees forward, so that the gate leaf 2 is in a horizontal state, achieving the purpose of opening the gate. The rear side of the gate leaf 2 is upstream, the front side of the gate leaf 2 is downstream, and the upstream water flows downstream; when the gate is closed, the hydraulic motor 4 rotates to drive the bottom transverse axis 1 to rotate 90 degrees to the rear, and the bottom transverse axis 1 drives the gate leaf 2 to flip 90 degrees to the rear, so that the gate leaf 2 is in a vertical state, achieving the purpose of closing the gate and blocking the upstream water; when the gate is opened, the bottom transverse axis 1 rotates 90 degrees forward, causing the gate leaf 2 to rotate 90 degrees forward and be in a horizontal state. At the same time, the bottom transverse axis 1 rotates and drives the gate slab 7 to move upward through the drive rod 8. When the bottom transverse axis 1 starts to rotate, due to the weight limitation of the gate slab 7, the drive rod 8 will slide in the arcuate groove 11 until the top end of the drive rod 8 moves to the bottom end of the arcuate groove 11. At this time, the drive rod 8 is restricted by the bottom end of the arcuate groove 11 and no longer moves. As the bottom transverse axis 1 continues to rotate, the drive rod 8 will drive the gate slab 7 to move upward. When the bottom transverse axis 1 rotates 90 degrees, the drive rod 8 is located at the horizontal position, and the gate slab 7 also moves upward according to the set position. The upstream water flows through the gap between the gate slab 7 and the groove 13 while passing above the gate leaf 2, the water flow carries away the silt accumulated at the contact position between the rear side of the gate slab 7 and the sill 6, achieving the purpose of simultaneous dredging every time the gate is opened. When the gate slab 7 moves upward, the guide rod 15 drives the baffle plate 16 to move upward. When the gate slab 7 moves up to its position, the upper end surface of the baffle plate 16 is exactly flush with the upper end surface of the groove 13. At this time, when the upstream river water passes between the gate slab 7 and the groove 13, the silt carried will not enter the groove 13, ensuring that the next time the gate slab 7 moves downward, it can completely enter the groove 13.

[0060] The above are the preferred embodiments of the present application and do not limit the scope of protection of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the scope of protection of the present application.