Large river channel flap gate with side hydraulic opening and closing

Abstract

The utility model belongs to the field of hydraulic facilities, concretely relates to a large -scale river channel flap lock of side type hydraulic pressure opening and closing. It includes spindle, gate, two crank arms and two groups of opening and closing mechanism. Among them, the spindle is installed on the riverbed base station along the direction perpendicular to the river in the horizontal direction through the first hinge support. The crank arm one section is fixedly connected with the end of spindle and is equipped with the first pivot in the other end. The opening and closing mechanism includes hydraulic telescopic cylinder and cylinder seat. The cylinder seat is fixed on the water inlet side on the riverbed base station, and the cylinder body of hydraulic telescopic cylinder is rotatably connected with the cylinder seat. The front end of hydraulic telescopic cylinder is equipped on the first pivot through a connecting ring. Hydraulic telescopic cylinder exerts force to the crank arm end by telescopic movement to realize the gate turnover. The flap lock still includes a locking mechanism for fixing the position of crank arm when the gate is closed. The utility model solves the problems of low safety and stability, difficult control of existing sectional large -scale flap lock.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy facilities, specifically relating to a large-scale river flap gate with side hydraulic opening and closing. Background Technology

[0002] A river gate is a hydraulic facility installed at the openings of spillways, riverbank spillways, drainage outlets, hydraulic tunnels, and their structures. It is used to regulate flow, control upstream and downstream water levels, discharge floodwaters, and remove silt or floating debris. Based on their structure, river gates can be classified into various types, including flap gates, cover gates, stacked beam gates, floating box gates, cylindrical gates, and roller gates.

[0003] Among the various types of gates mentioned above, flap gates are the most widely used. A flap gate is a valve that uses the lever balance principle to open and close. Specifically, a hydraulically controlled flap gate utilizes the mutual balancing of hydraulic force and gate weight, and achieves water level regulation through the addition of a damping feedback system. When the upstream water level rises, the power mechanism drives the gate to rotate around its shaft to the horizontal open state, thus releasing water. Conversely, when the upstream water level drops, the gate is driven to gradually rotate to the vertical closed state, thus storing water and keeping the upstream water level within the design requirements.

[0004] In some large waterways, segmented flap gates are commonly used to balance the load. In this design, the entire gate is divided into multiple sections, each with at least one hydraulic opening and closing mechanism on the backwater side of the gate plate. The opening and closing of the entire gate can be controlled by synchronously adjusting each hydraulic mechanism. While this design can distribute the load and control a larger gate with smaller opening and closing mechanisms, it also increases the difficulty of construction and system control. Furthermore, the direct connection of the hydraulic opening and closing mechanisms to the gate in this design makes the mechanisms susceptible to damage from lateral loads. This also increases the safety risk of the gate becoming unusable due to the failure of a single opening and closing mechanism. Summary of the Invention

[0005] To address the issues of low safety and stability, and high control difficulty in existing segmented large flap gates, this utility model provides a side-mounted hydraulically operated large river flap gate.

[0006] The technical solution provided by this utility model is as follows: A large-scale river channel flap gate with side-mounted hydraulic opening and closing includes a main shaft, a gate, two crank arms, and two sets of opening and closing mechanisms. The main shaft is horizontally mounted on a riverbed platform perpendicular to the river channel via several first hinge supports. The gate is fixedly connected to the main shaft, and its rotation drives the gate to flip. Each crank arm consists of two identical arm plates and a long strip-shaped side plate. One end of each arm plate has a larger diameter first hole for connecting to the main shaft, and the other end has a smaller diameter second hole. The width of the arm plate gradually decreases from the first hole to the second hole. The two arm plates are arranged parallel and spaced apart. The side plate is perpendicular to the arm plates and is used to fix the two arm plates together from the side along the end closest to the first hole. A first rotating shaft perpendicular to the arm plate is fixed between the two second holes. The two crank arms are respectively sleeved onto both ends of the main shaft through the first holes and fixedly connected to the main shaft.

[0007] Each opening and closing mechanism includes a hydraulic telescopic cylinder and a cylinder base. The cylinder base is fixed to the inflow side of the riverbed platform, and the cylinder body of the hydraulic telescopic cylinder is rotatably connected to the cylinder base. The front end of the hydraulic telescopic cylinder is fitted onto the first rotating shaft at the second hole on the crank arm via a connecting ring. The hydraulic telescopic cylinder applies a force to the end of the crank arm corresponding to the second hole through its telescopic movement, thereby driving the crank arm to rotate around the main shaft, causing the main shaft to rotate relative to the first hinge support to achieve gate overturning.

[0008] In the large-scale river flap gate with side-mounted hydraulic opening and closing provided by this utility model, there is a preset clamp between the crank arm and the gate, and the hydraulic telescopic cylinder has a preset maximum telescopic length, both of which together satisfy: (1) When the hydraulic telescopic cylinder extends to its maximum stroke, the second hole of the crank arm is pushed to the farthest end; at this time, the gate is in a horizontal fully open state.

[0009] (2) When the hydraulic telescopic cylinder is fully retracted, the second hole of the crank arm is pulled to the nearest end; at this time, the gate is in a vertically closed state.

[0010] (3) When the length of the hydraulic telescopic cylinder is adjusted between the maximum stroke and the retracted state, the opening degree of the gate can be flexibly adjusted.

[0011] In a further optimized version of this utility model, each crank arm has an outwardly protruding extension at one end of its arm plate near the second hole, and a third hole is provided in the extension.

[0012] Accordingly, the large-scale river flap gate also includes two sets of locking mechanisms, each consisting of a hydraulic pin-operated device and a locking seat. The locking seat includes a vertical limiting ring. The locking seat is fixedly installed on a base between the cylinder and the crank arm, with the installation position satisfying the following condition: when the opening and closing mechanism drives the gate to the fully closed state, the limiting ring of the locking seat is precisely inserted between the outer extensions of the two arm plates in the crank arm. At this time, the inner hole of the limiting ring coincides with the third hole on the crank arm. The hydraulic pin-operated device is installed on the outer side of the crank arm at the position corresponding to the third hole and is used to fix the crank arm and the locking seat by inserting a locking tongue into the third hole, thereby locking the gate.

[0013] As a further improvement of this utility model, a screw hole is provided on the outer periphery of the arm plate on the outward side of the crank arm corresponding to the third hole, and a flange is provided on the mounting surface of the hydraulic pin-feeding device. The flange is fixed to the arm plate by bolts and screw holes to achieve a fixed connection between the hydraulic pin-feeding device and the crank arm.

[0014] As a further improvement of this utility model, the diameters of the third hole on the crank arm and the limiting hole in the locking seat are matched with the outer diameter of the locking tongue in the hydraulic pin-feeding device.

[0015] As a further improvement of this utility model, each hydraulic telescopic cylinder and hydraulic pin insertion device is driven and controlled by a set of independent hydraulic stations and control cabinets.

[0016] As a further improvement of this utility model, the middle section of the hydraulic telescopic cylinder is provided with two second rotating shafts perpendicular to the cylinder body, and the two second rotating shafts are located on the same axis. The cylinder base includes two second hinge supports located on both sides of the cylinder body; the second rotating shafts on both sides are rotatably connected to the second hinge supports on the corresponding sides.

[0017] As a further improvement of this utility model, the main shaft is a hollow pipe with multiple mounting holes. The gate is assembled and welded from multiple gate plates, and each gate plate has a mounting component at its bottom that inserts into the mounting hole. The main shaft and each gate plate are fixedly connected by fasteners and then welded at the interface to achieve overall sealing and waterproofing.

[0018] The spindle is inserted into the first hole of the crank arm, and the spindle is welded and fixed to the crank arm.

[0019] As a further improvement of this utility model, the water-facing surface of the gate is a smooth plane, while the back surface is provided with grid-like reinforcing ribs perpendicular to the plate surface.

[0020] As a further improvement of this utility model, the first hinge support includes a bearing and a bearing housing. The bearing is sleeved on the main shaft, and the inner ring of the bearing is fixedly connected to the main shaft. The bearing housing includes a base and an annular plate thereon; the base is fixedly connected to the platform, and the annular plate is fixedly connected to the outer ring of the bearing. A sealing mechanism for covering the bearing is also provided on the side of the annular plate.

[0021] The technical solution provided by this utility model has the following beneficial effects: This utility model provides a large-scale river channel flap gate with a crank arm installed at each end of the main shaft connecting the gate. Two sets of side-mounted hydraulic telescopic cylinders apply a tangential force to the crank arms along their ends, thereby pushing the main shaft and gate to flip. This utility model movably connects the hydraulic telescopic cylinders to the base platform and matches their structure and assembly method with the crank arms and the movement trajectory, resulting in a simple and flexibly controllable gate opening and closing mechanism. This utility model uses only two hydraulic opening and closing mechanisms to control the gate's opening and closing, thus providing higher safety and stability.

[0022] This invention also incorporates a special pin-type locking mechanism that locks the crank arm in position when the gate is closed. This allows the opening and closing mechanism to be unloaded during the water storage state of the closed gate, preventing damage to the hydraulic telescopic cylinder due to axial overload. The locking mechanism also serves as a safety redundancy for the entire gate in the closed state, further enhancing the safety of the hydraulic facilities. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the installation of a large river flap gate with side hydraulic opening and closing provided in Embodiment 1 of this utility model.

[0024] Figure 2 This is a schematic diagram of the structure of the first hinge support used in Embodiment 1 of this utility model.

[0025] Figure 3 This is a structural assembly diagram of the main shaft, gate, and crank arm in Embodiment 1 of this utility model.

[0026] Figure 4 This is a schematic diagram of the crank arm used in Embodiment 1 of this utility model.

[0027] Figure 5 This is a schematic diagram of the state of each component when the gate is in the closed state in Embodiment 1 of this utility model.

[0028] Figure 6 This is a schematic diagram of the state of each component when the gate is in the open state in Embodiment 1 of this utility model.

[0029] Figure 7 This is a schematic diagram of the locking seat in Embodiment 1 of this utility model.

[0030] The diagram is marked as follows: 1. Gate; 2. Main shaft; 3. Crank arm; 4. Opening and closing mechanism; 5. Locking mechanism; 6. Hydraulic station; 7. Control cabinet; 11. Reinforcing rib; 12. Mounting component; 21. First hinge support; 31. First hole; 32. Second hole; 33. Third hole; 41. Hydraulic telescopic cylinder; 42. Cylinder seat; 51. Hydraulic pin insertion device; 52. Locking seat; 210. Annular plate; 211. Bearing seat; 212. Bearing; 301. Arm plate; 302. Side plate; 410. Connecting ring; 500. Flange; 520. Limiting ring. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0032] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are only used to distinguish different objects described, and should not be construed as indicating or implying relative importance.

[0033] Example 1 This embodiment provides a large-scale river channel flap gate with side-mounted hydraulic opening and closing. The flap gate is installed on an overflow dam, and the entire gate body includes a main shaft 2, a gate 1, two crank arms 3, and two sets of opening and closing mechanisms 4. For example... Figure 1 As shown, the main shaft 2 and the gate 1 are installed above the dam body, and the crank arm 3 and the opening and closing mechanism 4 are installed in the gate chambers on both sides of the dam body. In this embodiment, the opening and closing mechanism 4 is controlled by hydraulic equipment. The gate chamber is also equipped with a hydraulic station 6 for controlling the hydraulic system, as well as a control cabinet 7 for controlling the operation of the hydraulic equipment.

[0034] Specifically, the main shaft 2 is horizontally mounted on a base on the riverbed along a direction perpendicular to the river channel via several first hinge supports 21. Specifically, as... Figure 2As shown, each first hinge support 21 includes a bearing 212 and a bearing housing 211. The bearing 212 is sleeved on the main shaft 2, and the inner ring of the bearing 212 is fixedly connected to the main shaft 2. The bearing housing 211 includes a base and an annular plate 210 thereon; the base is fixedly connected to the base platform, and the annular plate 210 is fixedly connected to the outer ring of the bearing 212. In addition, since some of the hinge supports and the main shaft 2 in this embodiment are set on the river channel, the side of the annular plate 210 is also provided with a sealing mechanism to cover the bearing 212. In practical applications, considering the large length of the main shaft 2, it can be installed by segmented prefabrication and on-site assembly. The two ends of each segment of the main shaft 2 are connected by flanges, and each first hinge support 21 is evenly distributed on the main shaft 2 to distribute the load of the entire main shaft 2 evenly. The bottom of the bearing housing 211 of the first hinge support 21 is fixed to the bottom of the base platform by embedded parts.

[0035] In this embodiment, gate 1 is assembled and welded from multiple gate plates, such as... Figure 3 As shown, the gate 1 is fixedly connected to the main shaft 2. In practical applications, the main shaft 2 has multiple mounting holes evenly distributed, and each gate plate has a mounting component 12 at its bottom that inserts into the mounting hole. During equipment installation, technicians lift each gate plate and insert the gate plate mounting component 12 into the mounting hole on the main shaft 2 to achieve precise alignment. After the gate plate and main shaft 2 are aligned, they can be fixedly connected using fasteners. After all gate plates are installed, they can be laid down, and then all gate plates and main shaft 2 can be welded together as a whole, ensuring a sealed and waterproof connection between the main shaft 2 and the gate 1.

[0036] Since the width of the flap gate in this embodiment can reach tens or even hundreds of meters, in order to reduce the weight of the equipment and ensure the structural strength, in practical applications, the main shaft 2 is preferably made of a hollow pipe, while the water-facing surface of the gate 1 is a smooth plane, and the back surface is provided with a grid-like reinforcing rib 11 perpendicular to the plate surface.

[0037] like Figure 4As shown, each crank arm 3 in the large-scale river flap gate provided in this embodiment consists of two identical arm plates 301 and a long strip-shaped side plate 302. One end of the arm plate 301 has a first hole 31 with a larger diameter for connecting the main shaft 2, and the other end has a second hole 32 with a smaller diameter. The width of the arm plate 301 gradually decreases from the first hole 31 to the second hole 32. The two arm plates 301 are arranged parallel and spaced apart. The side plate 302 is perpendicular to the arm plates 301 and is used to fix the two arm plates 301 together from the side along the end near the first hole 31. It should be emphasized that the side plate 302 in this embodiment allows a fixed-width gap to be formed between the two arm plates 301, thus sealing the side of the arm plate 301 near the first hole 31. Furthermore, the side plate 302 does not extend to the side of the two parallel arm plates 301 near the second hole 32; therefore, the end of the crank arm 3 corresponding to the second hole 32 remains open. This provides space for other components to "intrude" into the middle of the crank arm 3 along the gap between the two arm plates 301 during movement. For example... Figure 3 As shown, a first rotating shaft perpendicular to the arm plate 301 is fixed between the two second holes 32. The two crank arms 3 are respectively sleeved on both ends of the main shaft 2 through the first holes 31 and are fixedly connected to the main shaft 2.

[0038] In practical applications, the outer diameter of the main shaft 2 matches the diameter of the first hole 31 of the crank arm 3. After the crank arm 3 is fitted onto both ends of the main shaft 2, the two can be fixedly connected by welding. Furthermore, during assembly, the main shaft 2 not only passes through the crank arm 3 but also extends beyond it. Based on this, a first hinge support 21 is provided on each side of the crank arm 3 for support. Since the crank arm 3 is fixedly connected to the end of the main shaft 2 along the end containing the first hole 31, when a tangential force is applied to the end of the crank arm 3 containing the second hole 32, the main shaft 2 can be driven to rotate, thereby causing the gate 1 connected to the main shaft 2 to flip.

[0039] In this embodiment, two opening and closing mechanisms 4 apply a force to the crank arms 3 on both sides of the main shaft 2 to drive the gate 1 to tilt. Specifically, as shown... Figure 5As shown, each opening and closing mechanism 4 includes a hydraulic telescopic cylinder 41 and a cylinder seat 42. The cylinder seat 42 is fixed to the water-facing side of the riverbed platform, and the cylinder body of the hydraulic telescopic cylinder 41 is rotatably connected to the cylinder seat 42. In one typical embodiment, the middle section of the hydraulic telescopic cylinder 41 has two second rotating shafts perpendicular to the cylinder body. The second rotating shafts are horizontally positioned, and their extension directions are on the same axis, which is parallel to the main shaft 2. The cylinder seat 42 includes two second hinge supports located on both sides of the cylinder body; the two second rotating shafts are sleeved on the hinge supports, thereby allowing the hydraulic telescopic cylinder 41 to be tilted relative to the second hinge supports. The front end of the hydraulic telescopic cylinder 41 is sleeved on the first rotating shaft at the second hole 32 on the crank arm 3 via a connecting ring 410. In this state, the connecting ring 410 and the first rotating shaft form a rotating pair, thereby forming a "movable joint" between the hydraulic telescopic cylinder 41 and the crank arm 3. At this time, the included angle between the hydraulic telescopic cylinder 41 and the crank arm 3 is adjustable.

[0040] based on Figure 1 As shown in the diagram of the gate 1 structure, the crank arm 3 constitutes a force-saving lever for driving the main shaft 2 to rotate: when the hydraulic telescopic cylinder 41 extends, it can apply a thrust towards the backwater side of the gate 1 to the end of the crank arm 3; at this time, the gate 1 can rotate as follows: Figure 5 The vertical closed state shown is switched to the state as follows: Figure 6 The gate is in the horizontally open state as shown. Conversely, when the hydraulic telescopic cylinder 41 is shortened, it can apply a pulling force to the end of the crank arm 3, pointing towards the water-facing side of the gate 1; at this time, the gate 1 can open from the horizontal position as shown. Figure 5 The vertical closed state shown is switched to the state as follows: Figure 6 The horizontal state shown is the open state.

[0041] During this process, since the hydraulic telescopic cylinder 41 and cylinder seat 42 are rotatably connected, and the hydraulic telescopic cylinder 41 and crank arm 3 are also rotatably connected, the hydraulic telescopic cylinder 41 can adjust its tilt angle with the horizontal plane in real time while extending; this is to address the mismatch between the straight trajectory of the end of the hydraulic telescopic rod when it extends and the arc trajectory of the end of the crank arm 3 when it rotates. Furthermore, to address the issue that the push rod at the front end of the cylinder body may interfere with the crank arm 3 when the hydraulic telescopic cylinder 41 extends to its limit position, in this embodiment, a gap is provided at the end of the crank arm 3 near the second hole 32 between the two arm plates 301. This gap allows the hydraulic telescopic cylinder 41 to partially intrude into the crank arm 3.

[0042] In the large-scale river flap gate with side-mounted hydraulic opening and closing provided in this embodiment, the maximum stroke of the hydraulic telescopic cylinder 41 is designed based on its movement trajectory with the crank arm 3 during the opening and closing of the gate 1. Furthermore, during the assembly of the crank arm 3 with the main shaft 2, there is a certain angle between the crank arm 3 and the gate 1. In the solution provided in this embodiment, this preset angle and the maximum stroke of the hydraulic telescopic cylinder 41 precisely achieve the following technical effects: (1) When the hydraulic telescopic cylinder 41 extends to its maximum stroke, the second hole 32 of the crank arm 3 is pushed to the farthest end; at this time, the gate 1 is in a horizontal fully open state.

[0043] (2) When the hydraulic telescopic cylinder 41 is fully retracted, the second hole 32 of the crank arm 3 is pulled to the nearest end; at this time, the gate 1 is in a vertically closed state.

[0044] (3) When the length of the hydraulic telescopic cylinder 41 is adjusted between the maximum stroke and the retracted state, the opening degree of the gate 1 can be flexibly adjusted.

[0045] In the further optimized technical solution of this embodiment, such as Figure 4 As shown, each crank arm 3 has an outwardly protruding extension at one end of its arm plate 301 near the second hole 32, and a third hole 33 is provided in the extension. Correspondingly, the large river channel flap gate also includes two sets of locking mechanisms 5, each set of locking mechanisms 5 including a hydraulic pin-feeding device 51 and a locking seat 52. For example... Figure 7 As shown, the locking seat 52 includes a vertical limiting ring 520. (As indicated...) Figure 5 and Figure 6 As shown, the hydraulic pin-feeding device 51 is installed on the outer side of the crank arm 3 at the position corresponding to the third hole 33. In a specific embodiment, the outer periphery of the arm plate 301 on the outward side of the crank arm 3 corresponding to the third hole 33 can be provided with screw holes, and the mounting surface of the hydraulic pin-feeding device 51 can be provided with a flange 500. The flange 500 is fixed to the arm plate 301 by bolts and screw holes to achieve a fixed connection between the hydraulic pin-feeding device 51 and the crank arm 3.

[0046] The locking seat 52 in the locking mechanism 5 is fixedly installed on the base between the cylinder and the crank arm 3. The installation position of the locking seat 52 is exactly at the position near the third hole 33 in the crank arm 3 when the gate 1 is fully closed. Furthermore, the installation position of the locking seat 52 also satisfies: (1) When the opening and closing mechanism 4 drives the gate 1 to stand up to the fully closed state, the limiting ring 520 of the locking seat 52 is just inserted between the outer extension of the two arm plates 301 in the crank arm 3. At this time, the inner hole of the limiting ring 520 coincides with the third hole 33 on the crank arm 3.

[0047] (2) Conversely, when the opening and closing mechanism 4 drives the gate 1 to flip to the horizontal fully open state, the hydraulic pin device 51 follows the crank arm 3 to lift up and separates from the locking seat 52.

[0048] Based on this special structure and assembly relationship between the locking seat 52 and the hydraulic pin-feeding device 51, the hydraulic pin-feeding device 51 in this embodiment can lock the gate 1 by inserting a locking tongue into the third hole 33 to fix the crank arm 3 and the locking seat 52. To achieve a tighter lock, the diameters of the third hole 33 on the crank arm 3 and the limiting hole in the locking seat 52 are matched with the outer diameter of the locking tongue in the hydraulic pin-feeding device 51.

[0049] The locking mechanism 5 provided in this embodiment locks the mechanical state of the combination of crank arm 3, main shaft 2, and gate 1 when gate 1 is closed. When the flap gate needs to be closed for water storage, the locking tongue of the locking mechanism 5 should be extended immediately after the opening and closing mechanism 4 closes gate 1 each time, so as to fix the crank arm 3 to the locking seat 52. The locking tongue bears the load output by gate 1 through crank arm 3, thereby preventing the opening and closing mechanism 4 from being damaged by overload when gate 1 is closed for water storage. Correspondingly, when the flap valve needs to be opened to release water, the locking tongue should be retracted with the locking mechanism 5 first, and then the hydraulic telescopic cylinder 41 should be driven to gradually release the pressure. At this time, under the pressure of the accumulated water, gate 1 is gradually lowered, switching from a vertical state to a horizontal state.

[0050] In summary, the process of opening and closing the large river channel flap gate with side hydraulic opening and closing provided in this embodiment, under the joint control of the opening and closing mechanism 4 and the locking mechanism 5, is as follows: The gate-closing mechanism 4 only closes the gate for water storage at low water levels, and the closure action mainly requires overcoming the gravity of the gate 1. After the gate 1 is closed, the locking mechanism 5 locks the gate, and the locking tongue then bears the load generated by the water. Correspondingly, the gate-closing mechanism 4 usually opens the gate for water release at high water levels. Before opening the gate, the locking tongue in the locking mechanism 5 needs to be retracted, and then the gate-closing mechanism 4 is unloaded, so that the gate 1 automatically flips under the gravity of the water.

[0051] In this embodiment, both the hydraulic pin-threading device 51 in the locking mechanism 5 and the hydraulic telescopic cylinder 41 in the opening and closing mechanism 4 are controlled by hydraulic systems. Therefore, each locking mechanism 5 and opening and closing mechanism 4 requires a corresponding hydraulic station 6 and control cabinet 7. In this embodiment, each hydraulic telescopic cylinder 41 and hydraulic pin-threading device 51 is driven and controlled by a set of independent hydraulic stations 6 and control cabinets 7.

[0052] In addition, to improve safety, the large river flap gate provided in this embodiment should also meet the following requirements regarding the locking and unlocking methods of the main gate 1: 1. When gate 1 is permanently upright and blocks water, locking mechanism 5 is used to lock gate 1, and opening and closing mechanism 4 can be unloaded. When the opening of gate 1 needs to be adjusted frequently, the hydraulic valve of opening and closing mechanism 4 is used to lock the opening state of gate 1.

[0053] 2. When the flood season begins or when an upstream rainfall warning is issued, the hydraulic locking mechanism 5 should be released in advance, and the gate 1 should be locked using the hydraulic valve of the main hoist.

[0054] 3. Before unlocking the locking mechanism 5, the opening and closing mechanism 4 should be started first to unload and then dislock the locking mechanism 5; the opening and closing mechanism 4 can only be operated after the lock tongue has been checked to be fully dislocked.

[0055] 4. Before locking mechanism 5 is engaged, check whether the locking tongue and the limit block are accurately aligned; after locking mechanism 5 is engaged, check whether it is locked in place; only after confirming that there is no error can the opening and closing mechanism 4 be unloaded.

[0056] 5. In the event of power failure, the opening and closing mechanism 4 should be able to automatically unload and allow the gate 1 to lie flat smoothly under water pressure.

[0057] 6. The opening and closing mechanism 4 should be equipped with an emergency manual oil release device so that the gate 1 can be manually lowered when the hydraulic station 6 fails; preferably, the hydraulic stations 6 of the two opening and closing mechanisms 4 are integrated into one device.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A large river flap gate with side-mounted hydraulic opening and closing, characterized in that, It includes: A main shaft, which is horizontally installed on the riverbed base platform in a direction perpendicular to the river through a number of first hinge supports; A gate, which is fixedly connected to the main shaft to drive the gate to flip through the rotation of the main shaft; Two toggle arms, each toggle arm is composed of two identical arm plates and a long side plate; one end of the arm plate is provided with a first hole with a larger diameter for connecting the main shaft, and the other end is provided with a second hole with a smaller diameter. The width of the plate body of the arm plate gradually shrinks from the first hole to the second hole; the two arm plates are arranged in parallel at intervals, and the side plate is perpendicular to the arm plate and is used to fixedly connect the two arm plates from the side near the first hole; a first rotating shaft perpendicular to the arm plate is fixed between the two second holes; the two toggle arms are respectively sleeved on both ends of the main shaft through the first holes and are fixedly connected to the main shaft; Two sets of opening and closing mechanisms, each opening and closing mechanism includes a hydraulic telescopic cylinder and a cylinder seat; the cylinder seat is fixed on the water inlet side of the riverbed base platform, and the cylinder body of the hydraulic telescopic cylinder is rotatably connected to the cylinder seat; the front end of the hydraulic telescopic cylinder is sleeved on the first rotating shaft at the second hole of the toggle arm through a connecting ring; the hydraulic telescopic cylinder applies a force to one end corresponding to the second hole in the toggle arm through telescopic movement, and then drives the toggle arm to rotate with the main shaft as the rotation axis, and drives the main shaft to rotate relative to the first hinge support to realize the flipping of the gate.

2. The large river flap gate with side hydraulic opening and closing as described in claim 1, wherein: There is a preset fixture between the toggle arm and the gate, and the hydraulic telescopic cylinder has a preset maximum telescopic length, and the two jointly satisfy: When the hydraulic telescopic cylinder extends to the maximum stroke, the second hole of the toggle arm is pushed to the farthest end. At this time, the gate is in a horizontal fully open state; When the hydraulic telescopic cylinder is fully retracted, the second hole of the toggle arm is pulled to the nearest end. At this time, the gate is in a vertical fully closed state; When the length of the hydraulic telescopic cylinder is adjusted between the maximum stroke and the retracted state, the opening degree of the gate can be adjusted.

3. The large river flap gate with side hydraulic opening and closing as described in claim 2, characterized in that: One end of the arm plate close to the second hole is also provided with an outward protruding extension part, and a third hole is provided in the extension part; The large river flap gate also includes two sets of locking mechanisms, each set of locking mechanisms includes a hydraulic pin device and a locking seat; the locking seat includes a vertical limiting ring; the locking seat is fixedly installed on the base platform between the cylinder body and the toggle arm, and the installation position satisfies: when the opening and closing mechanism drives the gate to stand up to the fully closed state, the limiting ring of the locking seat just inserts between the extension parts of the two arm plates of the toggle arm. At this time, the inner hole of the limiting ring coincides with the third hole on the toggle arm; the hydraulic pin device is installed at the position corresponding to the third hole on the outer side of the toggle arm and is used to insert a locking tongue into the third hole to fix the toggle arm and the locking seat, and then lock the gate.

4. The large river flap gate with side hydraulic opening and closing as described in claim 3, wherein: A screw hole is provided on the outer circumference of the arm plate on the outer side of the toggle arm corresponding to the third hole, and the installation surface of the hydraulic pin device is provided with a flange plate. The flange plate is fixed on the arm plate through bolts and screw holes to realize the fixed connection between the hydraulic pin device and the toggle arm.

5. The large river flap gate with side hydraulic opening and closing as described in claim 4, wherein: The diameters of the third hole on the toggle arm and the limiting hole in the locking seat match the outer diameter of the locking tongue in the hydraulic pin device.

6. The large river flap gate with side hydraulic opening and closing as described in claim 5, characterized in that: Each hydraulic telescopic cylinder and hydraulic pin device is respectively driven and controlled by a set of independent hydraulic stations and control cabinets.

7. The large river flap gate with side hydraulic opening and closing as described in claim 1, characterized in that: In the middle section of the hydraulic telescopic cylinder, there are two second rotating shafts perpendicular to the cylinder body, and the two second rotating shafts are located on the same axis. The cylinder seat includes two second hinge supports located on both sides of the cylinder body; the second rotating shafts on both sides are respectively rotatably connected to the corresponding second hinge supports.

8. The large river flap gate with side hydraulic opening and closing as described in claim 1, wherein: The main shaft is a hollow pipe, and there are multiple mounting holes on it. The gate is assembled and welded by multiple gate plates, and each gate plate bottom is provided with a mounting part inserted into the mounting hole; the main shaft is hermetically welded to each gate plate. The main shaft is inserted into the first hole of the crank arm and is welded and fixed to the crank arm.

9. The large river flap gate with side hydraulic opening and closing as described in claim 7, characterized in that: The water-facing surface of the gate is a smooth plane, and the back water-facing surface is provided with grid-shaped stiffeners perpendicular to the plate surface.

10. The large river flap gate with side hydraulic opening and closing as described in claim 1, characterized in that: The first hinge support includes a bearing and a bearing seat. The bearing is sleeved on the main shaft, and the inner ring of the bearing is fixedly connected to the main shaft; the bearing seat includes a base and an annular plate thereon; the base is fixedly connected to the base platform, and the annular plate is fixedly connected to the outer ring of the bearing. The side surface of the annular plate is also provided with a sealing mechanism covering the bearing.

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