Hydraulic control type downward opening weir gate

Abstract

The utility model relates to the technical field of checkgates, and discloses a hydraulic control type downward-opening checkgate which comprises a door frame and a door plate slidably arranged in the door frame, sealing bases are arranged on the portions, corresponding to the upstream face and the downstream face of the door plate, of the door frame, water stop strips are correspondingly laid on the sealing bases, and the sides, facing the door plate, of the water stop strips extend into the door frame. The side wall, facing the door plate, of the water stop strip is arranged in a sawtooth shape, the tooth tip of the water stop strip abuts against the door plate all the time, and the side, away from the sealing base, of the water stop strip is further correspondingly provided with a pressing plate used for making the water stop strip abut against the sealing base. And a plurality of bolts which jointly penetrate through the pressing plate, the water stop strip and the sealing base are distributed on the pressing plate in the length direction. The check gate has the effect of improving the sealing performance of the check gate.

Description

Technical Field

[0001] The present application relates to the technical field of weir gates, and in particular to a hydraulically controlled downward-opening weir gate. Background Art

[0002] Weir gates usually refer to gates or overflow ports on dams used to control water flow in water conservancy projects. In water conservancy systems, weir gates are used to adjust water levels, control water flow speed and direction, and discharge excess water when necessary to prevent floods or regulate water resources. The design and operation of weir gates are essential to ensure the safe operation of water conservancy facilities and the effective management of water resources.

[0003] In the prior art, the weir gate mainly includes a door panel and a door frame. The door panel is vertically slidably arranged in the door frame. A sealing water stop strip is embedded in the door frame. Through the vertical sliding of the door panel, the side wall of the door panel is always in contact with the sealing water stop strip, which can improve the sealing performance between the door frame and the door panel.

[0004] However, due to its elastic material, the sealing water stop strip not only has a good sealing effect, but also increases the friction between the sealing water stop strip and the door panel. When the door panel slides vertically in the door frame, the sealing water stop strip is easily worn due to the large friction between the sealing water stop strip and the door panel, which greatly reduces the service life of the sealing water stop strip; when the damaged sealing water stop strip needs to be replaced, since the sealing water stop strip is embedded in the sealing water stop groove, it is greatly increased. At this time, forcibly replacing the sealing water stop strip will easily damage the sealing water stop groove on the door frame, thereby reducing the sealing performance of the weir door after continuous use. Utility Model Content

[0005] In order to improve the sealing performance of the weir gate, the present application provides a hydraulically controlled downward-opening weir gate.

[0006] The present application provides a hydraulically controlled downward opening weir gate adopting the following technical solution:

[0007] A hydraulically controlled downward-opening weir gate comprises a door frame and a door panel slidably arranged in the door frame, wherein the door frame is provided with sealing bases on the water-facing surface and the water-receiving surface of the door panel, and a waterstop strip is laid on the sealing base, wherein the waterstop strip extends into the door frame on the side facing the door panel, and the waterstop strip is serrated on the side wall facing the door panel, and the tooth tip of the waterstop strip is always pressed against the door panel, and a pressure plate for pressing the waterstop strip against the sealing base is also provided on the side of the waterstop strip away from the sealing base, and a plurality of bolts are arranged on the pressure plate along the length direction, which penetrate the pressure plate, the waterstop strip and the sealing base together.

[0008] By adopting the above technical solution, the water stop strip is made of flexible rubber material. When the door panel slides up and down in the door frame, the serrated water stop strip can always fit tightly on the surface of the door panel to form an effective sealing barrier. Moreover, due to the tightening effect of the pressure plate and the bolts, the stability and durability of this barrier are greatly improved. Among them, since the serration of the water stop strip can reduce the contact area between the water stop strip and the door panel, thereby reducing the friction resistance between the two, the degree of wear of the water stop strip is reduced during the use of the weir gate, which greatly improves the service life of the water stop strip. In addition, the water stop strip is provided with several tooth grooves, and the number of tooth grooves is equivalent to the corresponding level of water stopping effect, thereby improving the sealing performance of the weir gate. In addition, the water stop strip adopts an external setting of the pressure plate mounting structure, which not only improves the convenience of replacing the water stop strip, but also can adjust the gap between the water stop strip and the door panel by adjusting the tightening degree of the bolts, further improving the sealing effect of the weir gate.

[0009] Optionally, a hydraulic cylinder is provided on both sides of the door frame along the length direction of the door panel, a lifting ear is fixedly provided on the side wall of the door panel corresponding to the piston rod end of each hydraulic cylinder, and the piston rod end of each hydraulic cylinder is hinged to the corresponding lifting ear, and a hinge shaft support is provided on the top wall of the door frame corresponding to the top end of the cylinder body of each hydraulic cylinder, the top end of the cylinder body of the hydraulic cylinder is rotatably sleeved on the hinge shaft in the hinge shaft support, and the hinge shaft of the hinge shaft support is arranged parallel to the rotating shaft of the lifting ear.

[0010] By adopting the above technical scheme, both the fixed end and the telescopic end of the hydraulic cylinder are connected in a movable manner, which not only reduces the stress concentration that may be caused by the fixed connection, avoids damage to the hydraulic cylinder due to structural deformation or water pressure changes, and extends the service life of the hydraulic cylinder; it also allows the hydraulic cylinder to move freely within a certain range, which helps to adapt to water level changes or slight structural displacements, ensures that the hydraulic cylinder can still work normally under different working conditions, and improves the adaptability of the weir gate; it also helps the hydraulic cylinder maintain optimal force transmission and displacement control during operation, ensuring that the opening and closing of the weir gate is more precise and smooth, thereby improving the operating efficiency of the water conservancy facilities.

[0011] Optionally, a displacement sensor is installed on the top of the cylinder body of each hydraulic cylinder.

[0012] By adopting the above technical solution and using the real-time monitoring data of the displacement sensor, the operator can accurately know the exact position of the current gate plate, thereby achieving precise control of the gate plate opening. This not only improves the accuracy of the weir gate operation, but also greatly enhances its adaptability in complex water conservancy environments.

[0013] Optionally, a protective cover is provided on the top wall of the cylinder body of each hydraulic cylinder, and the displacement sensor is built into the corresponding protective cover.

[0014] By adopting the above technical solution, the displacement sensor is built into the corresponding protective cover, which can prevent the displacement sensor from being damaged by external environmental factors and ensure its long-term stable operation.

[0015] Optionally, M-shaped guide rails are vertically arranged on opposite sides of the door panel along the length direction inside the door frame, and plug-in sliders are arranged on the door panel corresponding to the M-shaped guide rails. The plug-in sliders are plugged into the corresponding M-shaped guide rails, and the plug-in sliders and the corresponding M-shaped guide rails are vertically slidably matched.

[0016] By adopting the above technical solution, the M-shaped guide rails on both sides provide a limiting effect on the door panel in the horizontal direction. At the same time, the sliding cooperation between the plug-in slider and the M-shaped guide rail realizes stable guidance and support for the vertical sliding of the door panel, thereby enhancing the smoothness of the sliding of the door panel.

[0017] Optionally, a connecting hole is opened on the side wall of the sealing base in the door frame away from the water stop strip, corresponding to each bolt, and a synchronous wheel is coaxially rotatably arranged at each connecting hole on the side wall of the sealing base in the door frame away from the water stop strip, each of the synchronous wheels is correspondingly sleeved on a hexagonal nut that matches the bolt, and several of the synchronous wheels are commonly sleeved with a meshing synchronous belt, and a servo motor that drives one of the synchronous wheels to rotate is also arranged in the door frame, and a guide member for realizing the sliding of the bolt rod is arranged between each bolt and the corresponding connecting hole.

[0018] By adopting the above technical solution, the servo motor is started to drive one of the synchronous wheels to rotate, and driven by the synchronous meshing of the synchronous belt, all the hexagonal nuts are driven to rotate synchronously. At this time, the bolts inserted into the hexagonal nuts are rotated by the thread and translated along their own axis under the limit guide of the guide, thereby realizing the tightening or loosening operation of the pressure plate on the water stop strip. The design of the synchronous wheel and the synchronous belt ensures that the rotation speed and angle of all bolts are consistent, thereby avoiding damage to the water stop strip caused by uneven force. The precise control of the servo motor makes the adjustment of the water stop strip more accurate and efficient.

[0019] Optionally, a guide groove is provided on the rod of the bolt along its length direction, and the guide member is a guide block slidably arranged inside the guide groove, the guide block slidably cooperates with the guide groove, and the guide block is arranged on the inner wall of the connecting hole of the sealing base for the bolt rod to pass through.

[0020] By adopting the above technical solution, when the synchronous wheel drives the hexagonal nut to rotate, the hexagonal nut drives the bolt shaft meshed with it through the thread to rotate synchronously. However, the guide block on the bolt shaft slides with the guide groove on the inner wall of the connection hole, so that the rotation of the hexagonal nut can only drive the bolt shaft to move parallel to its own axis. The cooperation between the guide groove and the guide block provides stable support for the rotation of the bolt, avoiding the water stop adjustment error caused by unstable bolt rotation. This design improves the accuracy and reliability of water stop adjustment.

[0021] Optionally, a plurality of limit rods are distributed on the inner wall of the door frame along the length direction of the synchronous belt, and the limit rods located on both sides of the length direction of the synchronous belt are set to resist the synchronous belt and provide relative tensioning force for the synchronous belt.

[0022] By adopting the above technical solution, since the synchronous belt is arranged in a U shape, if a limit rod is added, the tension of the synchronous belt can be controlled more accurately to avoid the decrease in transmission efficiency or increase in error caused by the relaxation of the synchronous belt. This design helps to improve the stability and reliability of the synchronous belt transmission.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The waterstop strip is made of flexible rubber material. When the door panel slides up and down in the door frame, the serrated waterstop strip can always fit tightly on the surface of the door panel to form an effective sealing barrier. Moreover, due to the tightening effect of the pressure plate and bolts, the stability and durability of this barrier have been greatly improved. The serrated shape of the waterstop strip can reduce the contact area between the waterstop strip and the door panel, thereby reducing the friction resistance between the two, so that the wear of the waterstop strip is reduced during the use of the weir gate, which greatly improves the service life of the waterstop strip. In addition, the waterstop strip is provided with several tooth grooves, and the number of tooth grooves is equivalent to the corresponding level of waterstop effect, thereby improving the sealing performance of the weir gate. In addition, the waterstop strip adopts an external setting of the pressure plate mounting structure, which not only improves the convenience of replacing the waterstop strip, but also can adjust the gap between the waterstop strip and the door panel by adjusting the tightening degree of the bolts, further improving the sealing effect of the weir gate;

[0025] 2. Both the fixed end and the telescopic end of the hydraulic cylinder are connected in a movable manner, which can not only reduce the stress concentration that may be caused by the fixed connection, avoid damage to the hydraulic cylinder caused by structural deformation or water pressure changes, and extend the service life of the hydraulic cylinder; at the same time, it also allows the hydraulic cylinder to move freely within a certain range, which helps to adapt to water level changes or slight structural displacements, ensure that the hydraulic cylinder can still work normally under different working conditions, and improve the adaptability of the weir gate; it also helps the hydraulic cylinder maintain the best force transmission and displacement control during the working process, ensuring that the opening and closing of the weir gate is more precise and smooth, thereby improving the operating efficiency of the water conservancy facilities;

[0026] 3. Using the real-time monitoring data of the displacement sensor, the operator can accurately know the exact position of the current gate plate, thereby achieving precise control of the gate plate opening. This not only improves the accuracy of the weir gate operation, but also greatly enhances its adaptability in complex water conservancy environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0028] Figure 2 It is a schematic diagram showing the connection relationship between the hydraulic cylinder, the door panel and the door frame in Example 1 of the present application.

[0029] Figure 3 It is a top view cross-sectional diagram showing the positional relationship between the water stop strip and the door panel in Example 1 of the present application.

[0030] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0031] Figure 5 It is a schematic diagram showing the connection relationship between the servo motor, synchronous wheel and synchronous belt in Example 2 of the present application.

[0032] Figure 6 It is an exploded diagram showing the connection relationship between the connecting hole and the bolt in Example 2 of the present application.

[0033] Description of reference numerals:

[0034] 1. Door frame; 11. Hinge support; 12. Synchronous wheel; 121. Synchronous belt; 122. Driven wheel; 13. Servo motor; 131. Driving wheel; 14. Limit rod; 2. Door panel; 21. Lifting ear; 3. Electric drive component; 31. Hydraulic cylinder; 311. Protective cover; 4. Water stop strip; 5. Fixing assembly; 51. Sealing base; 511. Connecting hole; 52. Press plate; 53. Bolt; 531. Hexagonal nut; 532. Guide groove; 6. M-type guide rail; 7. Plug-in slider; 8. Displacement sensor; 9. Guide piece; 91. Guide block. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-6 This application is described in further detail.

[0036] The embodiment of the present application discloses a hydraulically controlled downward-opening weir gate.

[0037] Example 1

[0038] Reference Figure 1A hydraulically controlled bottom-opening weir gate comprises a door frame 1 and a door panel 2. The door frame 1 is U-shaped, and the door panel 2 is a double-layer hollow structure. The double-layer door panel 2 can improve the bearing performance of water flow. The door panel 2 is slidably arranged on the door frame 1, and the door frame 1 is provided with an electric driving member 3 for driving the door panel 2 to slide vertically in the door frame 1. The door frame 1 is provided with water stop strips 4 that press against the door panel 2 on the water-facing surface and the water-receiving surface corresponding to the door panel 2, and the door frame 1 is also provided with a fixing component 5 of the water stop strip 4.

[0039] Reference Figure 1 Before the operation starts, check the sealing of the weir gate, especially whether the water stop strip 4 is worn or damaged, and replace the worn or damaged water stop strip 4 through the fixing component 5; when the weir gate needs to be opened or closed, the electric drive component 3 controls the door panel 2 to slide up and down in the door frame 1 to adjust the height of the door panel 2, thereby adjusting the water level.

[0040] Reference Figure 1 and Figure 2 The electric drive member 3 in this embodiment is a hydraulic cylinder 31, and one hydraulic cylinder 31 is provided on both sides of the door frame 1 along the length direction of the door panel 2. A lifting lug 21 is fixedly provided on the side wall of the door panel 2 corresponding to the piston rod end of each hydraulic cylinder 31, and the piston rod end of each hydraulic cylinder 31 is hinged on the corresponding lifting lug 21; a hinge shaft support 11 is installed on the top wall of the door frame 1 corresponding to the top of the cylinder body of each hydraulic cylinder 31 through a bolt 53, and the top of the cylinder body of the hydraulic cylinder 31 is rotatably sleeved on the hinge shaft in the hinge shaft support 11. The hinge shaft of the hinge shaft support 11 is arranged parallel to the rotating shaft of the lifting lug 21. The fixed end and the telescopic end of the hydraulic cylinder 31 are both connected in an active manner, which can avoid damage to the hydraulic cylinder 31 caused by structural deformation or water pressure changes, and extend the service life of the hydraulic cylinder 31.

[0041] Reference Figure 2 In order to ensure the accuracy of the weir gate operation, a displacement sensor 8 is installed on the top of each hydraulic cylinder 31, and a protective cover 311 is fixedly set on the top wall of the cylinder body of each hydraulic cylinder 31. The displacement sensor 8 is built into the corresponding protective cover 311 to ensure its normal operation and extend its service life.

[0042] Reference Figure 3 M-shaped guide rails 6 are vertically fixedly provided on opposite sides of the door panel 2 along the length direction inside the door frame 1, and plug-in sliders 7 are fixedly provided on the side walls of the door panel 2 corresponding to the M-shaped guide rails 6. The plug-in sliders 7 are plugged into the corresponding M-shaped guide rails 6, and the plug-in sliders 7 and the corresponding M-shaped guide rails 6 are matched along the vertical sliding, which can enhance the stability of the door panel 2 sliding up and down.

[0043] Reference Figure 1 and Figure 3The fixing assembly 5 includes a sealing base 51, a pressure plate 52 and bolts 53. The sealing base 51 corresponds to the water-facing surface and the water-receiving surface of the door panel 2 and is attached to the side wall of the door frame 1 and fixedly arranged on the side wall of the door frame 1. The water stop strip 4 is laid on the sealing base 51, and the water stop strip 4 is arranged in a serrated shape on the side wall of the door panel 2. In this embodiment, three tooth grooves are opened on the side of the water stop strip 4 attached to the door panel 2. The tooth tip of the water stop strip 4 is always pressed against the door panel 2, which is equivalent to the water stop strip 4 having a three-level water-stopping effect on the sealing of the door panel 2, and the contact area between the water stop strip 4 and the door panel 2 is relatively small, and the friction resistance between the two is small. The pressure plate 52 is a ductile metal strip, and is located on the side of the water stop strip 4 away from the sealing base 51. A plurality of bolts 53 are arranged along the length direction of the pressure plate 52. The pressure plate 52, the water stop strip 4 and the sealing base 51 are penetrated by the bolts 53, and the pressure plate 52 can press the water stop strip 4 against the sealing base 51.

[0044] Reference Figure 1 Due to the structural design of the pressing plate 52 and the bolt 53, the replacement of the water stop strip 4 becomes very convenient. Just loosen the bolt 53, remove the pressing plate 52 and the damaged water stop strip 4, then lay a new water stop strip 4 and reinstall the pressing plate 52 and the bolt 53.

[0045] The implementation principle of a hydraulically controlled downward-opening weir gate in the embodiment of the present application is as follows: when the weir gate needs to be opened or closed, the hydraulic cylinder 31 is started through the control system. The piston rod of the hydraulic cylinder 31 will push the door panel 2 to slide up and down along the M-shaped guide rail 6. During this process, the displacement sensor 8 will continuously monitor the movement state of the hydraulic cylinder 31 and feed back the data to the control system in real time to ensure that the door panel 2 can accurately reach the predetermined position. During this process, the water stop strip 4 can always be tightly pressed on the door panel 2 to achieve a sealing and water-proofing effect.

[0046] Example 2

[0047] Reference Figure 4 , Figure 5 and Figure 6 The difference between this embodiment and the first embodiment is that, in order to facilitate the adjustment of the tightening degree of the bolt 53, the gap between the water stop strip 4 and the door panel 2 is adjusted, and the adjustment range of each bolt 53 is ensured to be consistent. The door frame 1 is also equipped with a clever synchronous adjustment mechanism.

[0048] Reference Figure 4 , Figure 5 and Figure 6A connecting hole 511 is opened on the side wall of the sealing base 51 in the door frame 1 away from the water stop strip 4, corresponding to each bolt 53. A synchronous wheel 12 is coaxially rotatably arranged at each connecting hole 511 on the side wall of the sealing base 51 in the door frame 1 away from the water stop strip 4. Each synchronous wheel 12 is fixedly sleeved on a hexagonal nut 531 that cooperates with the bolt 53. A meshing synchronous belt 121 is commonly sleeved on several synchronous wheels 12, and a servo motor 13 is also fixedly arranged on the inner side wall of the door frame 1, one of the synchronous wheels 12 is coaxially fixedly arranged with a driven wheel 122 on the side wall away from the sealing base 51, and a driving wheel 131 meshing with the driven wheel 122 is fixedly sleeved on the output shaft of the servo motor 13.

[0049] Reference Figure 5 In order to improve the stability and reliability of the transmission of the synchronous belt 121, a plurality of limit rods 14 are distributed on the inner wall of the door frame 1 along the length direction of the synchronous belt 121. Each limit rod 14 is perpendicular to the inner wall of the door frame 1 and is fixedly arranged on the inner wall of the door frame 1. The limit rods 14 located on both sides of the length direction of the synchronous belt 121 are arranged to resist the synchronous belt 121 and provide relative tensioning force for the synchronous belt 121.

[0050] Reference Figure 6 A guide member 9 for realizing the sliding movement of the bolt 53 rod is provided between each of the bolts 53 and the corresponding connecting hole 511. A guide groove 532 is provided on the rod of the bolt 53 along its own length direction. The guide member 9 in this embodiment is a guide block 91 slidably arranged inside the guide groove 532. The guide block 91 is slidably matched with the guide groove 532, and the guide block 91 is fixedly arranged on the inner wall of the connecting hole 511 of the sealing base 51 for the bolt 53 rod to pass through.

[0051] The implementation principle of Example 2 is that when it is found that the sealing performance between the door panel 2 and the door frame 1 is not good, it can be improved by adjusting the bolts 53. First, the servo motor 13 is started, and the output shaft of the servo motor 13 rotates the synchronous belt 121 to drive the driving wheel 131 to rotate, and the driving wheel 131 rotates to drive the driven wheel 122 meshed therewith to rotate synchronously. At this time, the synchronous wheel 12 fixedly connected to the driven wheel 122 rotates synchronously. Under the connection of the synchronous belt 121, all the synchronous wheels 12 run synchronously, thereby driving all the bolts 53 to adjust synchronously. During the adjustment process, pay close attention to the fit between the water stop strip 4 and the door panel 2, and adjust the position of the bolts 53 to ensure the best sealing effect.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydraulically controlled downward opening weir gate, characterized in that: The invention comprises a door frame (1) and a door panel (2) slidably arranged in the door frame (1), wherein the door frame (1) is provided with a sealing base (51) on the water-facing surface and the water-receiving surface of the door panel (2), and a water stop strip (4) is laid on the sealing base (51), wherein the water stop strip (4) extends into the door frame (1) on the side facing the door panel (2), and the water stop strip (4) is arranged in a serrated shape on the side wall facing the door panel (2), and the tooth tip of the water stop strip (4) is always pressed against the door panel (2), and a pressure plate (52) for pressing the water stop strip (4) against the sealing base (51) is also provided on the side of the water stop strip (4) away from the sealing base (51), and a plurality of bolts (53) are arranged on the pressure plate (52) along the length direction, which are jointly penetrated by the pressure plate (52), the water stop strip (4) and the sealing base (51).

2. A hydraulically controlled downward opening weir gate according to claim 1, characterized in that: A hydraulic cylinder (31) is arranged on both sides of the door panel (2) along the length direction in the door frame (1); a lifting lug (21) is fixedly arranged on the side wall of the door panel (2) corresponding to the piston rod end of each hydraulic cylinder (31); the piston rod end of each hydraulic cylinder (31) is hinged on the corresponding lifting lug (21); a hinge shaft support (11) is arranged on the top wall of the door frame (1) corresponding to the top end of the cylinder body of each hydraulic cylinder (31); the top end of the cylinder body of the hydraulic cylinder (31) is rotatably sleeved on the hinge shaft in the hinge shaft support (11); and the hinge shaft of the hinge shaft support (11) is arranged parallel to the rotating shaft of the lifting lug (21).

3. A hydraulically controlled downward opening weir gate according to claim 2, characterized in that: A displacement sensor (8) is installed on the top of the cylinder body of each hydraulic cylinder (31).

4. A hydraulically controlled downward opening weir gate according to claim 3, characterized in that: A protective cover (311) is provided on the top wall of the cylinder body of each hydraulic cylinder (31), and the displacement sensor (8) is built into the corresponding protective cover (311).

5. The hydraulically controlled downward opening weir gate according to claim 1, characterized in that: The door frame (1) is provided with M-shaped guide rails (6) vertically on opposite sides along the length direction of the door panel (2); a plug-in slider (7) is provided on the door panel (2) corresponding to the M-shaped guide rail (6); the plug-in slider (7) is plugged into the corresponding M-shaped guide rail (6), and the plug-in slider (7) and the corresponding M-shaped guide rail (6) are slidably matched vertically.

6. The hydraulically controlled downward opening weir gate according to claim 1, characterized in that: A connecting hole (511) is opened in the door frame (1) on the side wall of the sealing base (51) away from the water stop strip (4), corresponding to each bolt (53), and a synchronous wheel (12) is coaxially rotatably arranged at each connecting hole (511) on the side wall of the sealing base (51) away from the water stop strip (4), each of the synchronous wheels (12) is correspondingly sleeved on a hexagonal nut (531) matched with the bolt (53), and a meshing synchronous belt (121) is commonly sleeved on several of the synchronous wheels (12). A servo motor (13) for driving one of the synchronous wheels (12) to rotate is also arranged in the door frame (1), and a guide member (9) for realizing the sliding of the bolt (53) rod is arranged between each of the bolts (53) and the corresponding connecting hole (511).

7. A hydraulically controlled downward opening weir gate according to claim 6, characterized in that: A guide groove (532) is provided on the rod of the bolt (53) along its length direction, and the guide member (9) is a guide block (91) slidably arranged inside the guide groove (532). The guide block (91) and the guide groove (532) are slidably matched, and the guide block (91) is arranged on the inner wall of a connecting hole (511) provided on the sealing base (51) for the bolt (53) rod to pass through.

8. The hydraulically controlled downward opening weir gate according to claim 6, characterized in that: A plurality of limit rods (14) are distributed on the inner wall of the door frame (1) along the length direction of the synchronous belt (121), and the limit rods (14) located on both sides of the length direction of the synchronous belt (121) are arranged to abut against the synchronous belt (121) and provide relative tensioning force for the synchronous belt (121).

Images