Arc-shaped brake

Abstract

The arc-shaped gate comprises a plurality of lifting type gate bodies, a gate containing groove is formed in the middle of the top of the arc-shaped weir in the length direction of the arc-shaped weir, the lifting type gate bodies are arranged in the gate containing groove, and the lifting type gate bodies comprise the arc-shaped gate bodies and the linear gate bodies. The arrangement form of the two gates in the gate containing groove is matched with the radian of the arc weir, the lifting type gate comprises a first state of being stored in the gate containing groove through lifting and a second state of being lifted to the top higher than the top of the gate containing groove, and first elastic water stop belts are arranged at the two ends of the lifting type gate correspondingly. The adjacent first elastic water-stop belts abut against each other and are used for stopping water, and a second elastic water-stop belt is fixed to the top of the arc-shaped weir in the length direction of the arc-shaped weir and used for sealing a gap between the upstream face of the lifting type gate and the arc-shaped weir. The water retaining height of the arc-shaped weir is increased through ascending of the arc-shaped gate, and the water storage capacity of the arc-shaped weir is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy engineering equipment technical field, more specifically, the utility model relates to an arc gate. BACKGROUND

[0002] The existing gate is a linear type, and is not suitable for the working condition of the arc shape, such as the arc weir. Therefore, the existing arc weir is not provided with a gate. The water retaining height of the arc weir cannot meet the actual demand in some cases, and does not have sufficient water storage capacity.

[0003] Therefore, how to improve the water retaining height of the arc weir to meet the water storage requirement is a problem to be solved in the field. SUMMARY

[0004] In view of the defects of the prior art, the utility model innovatively provides an arc gate, which comprises a plurality of lifting gates matched with the curvature of the arc weir, and is used for water retaining and water releasing. The arc gate improves the water retaining height of the arc weir by rising to the top higher than the top of the gate containing groove, thereby enhancing the water storage capacity of the arc weir.

[0005] To achieve the above technical purpose, the utility model discloses an arc gate for an arc weir, wherein the arc gate comprises a plurality of lifting gates,

[0006] The top of the arc weir is provided with a gate containing groove along the length direction of the arc weir, the plurality of lifting gates are arranged in the gate containing groove along the length direction of the arc weir, the plurality of lifting gates comprise arc gates and linear gates, the arrangement form of the arc gates and the linear gates in the gate containing groove is matched with the curvature of the arc weir, the lifting gate comprises a first state of being contained in the gate containing groove and a second state of rising to the top higher than the top of the gate containing groove,

[0007] The two ends of the lifting gate are provided with the first elastic water stop belt, and the first elastic water stop belts on the adjacent lifting gates abut each other for water stopping.

[0008] The top of the arc weir is fixed with a second elastic water stop belt along the length direction of the arc weir, the second elastic water stop belt is arranged on the water receiving surface of the gate containing groove and extends towards the gate containing groove, and is used for closing the gap between the water receiving surface of the lifting gate and the arc weir.

[0009] Further, the water receiving surface of the lifting gate is provided with a platform protruding towards the water receiving direction, and when the lifting gate rises to the highest position, the second elastic water stop belt abuts against the platform for water stopping.

[0010] Further, the second elastic waterstop is in P shape, and a straight part of the second elastic waterstop is partially or wholly fixedly connected with the arc weir, and a ring-shaped part of the second elastic waterstop extends above the gate accommodating groove.

[0011] Further, the second elastic waterstop is a rubber waterstop.

[0012] Further, the second elastic waterstop is fixed on the arc weir through a waterstop mounting plate and a first pressing plate, the waterstop mounting plate is fixed on the top of the arc weir, the second elastic waterstop is pressed on the waterstop mounting plate through the first pressing plate, and the end of the second elastic waterstop close to the lifting gate extends out of the waterstop mounting plate and the first pressing plate.

[0013] Further, the first elastic waterstop is in U shape, and the end of the lifting gate is fixed in the inside of the opening of the first elastic waterstop or is fixedly connected with the opening end of the first elastic waterstop, and the closed ends adjacent to each other abut against each other.

[0014] Further, the first elastic waterstop is a rubber waterstop.

[0015] Further, the lifting gate is driven to lift through a hydraulic cylinder, an installation groove is arranged in the inside of the arc weir, the installation groove is arranged below the gate accommodating groove and communicates with the gate accommodating groove, the hydraulic cylinder is fixed in the installation groove, and a piston of the hydraulic cylinder is fixedly connected with the lifting gate.

[0016] Further, a fixed plate is arranged in the installation groove, and a cylinder body of the hydraulic cylinder is fixedly connected with the fixed plate.

[0017] Further, a guide groove is arranged in the inside of the arc weir, the guide groove is arranged below the gate accommodating groove and communicates with the gate accommodating groove, a guide rail is fixed to the bottom of the lifting gate, the guide rail extends into the guide groove and can slide up and down relative to the guide groove.

[0018] The arc gate of the utility model has the advantages of:

[0019] The arc gate comprises a plurality of lifting gates matched with the arc of the arc weir, and is used for water retaining and releasing, the arc gate is lifted to the top higher than the top of the gate accommodating groove to increase the water retaining height of the arc weir, and thus the water storage capacity of the arc weir is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the axial view structural schematic diagram of the arc gate of the utility model embodiment.

[0021] Figure 2 isFigure 1 Enlarged diagram of point A in the middle.

[0022] Figure 3 This is a top view of the arc-shaped gate according to an embodiment of the present utility model.

[0023] Figure 4 yes Figure 3 Enlarged diagram of point B in the middle.

[0024] Figure 5 This is a longitudinal sectional view of the arc-shaped gate according to an embodiment of the present utility model.

[0025] Figure 6 yes Figure 5 Enlarged diagram of point C in the middle.

[0026] In the picture,

[0027] 1. Arc-shaped weir; 11. Gate receiving slot; 12. Mounting slot; 13. Water-retaining column; 2. Lifting gate; 21. Arc-shaped gate; 22. Straight gate; 23. Platform; 3. First elastic waterstop; 31. Fixing block; 32. Second pressure plate; 4. Second elastic waterstop; 5. Waterstop mounting plate; 6. First pressure plate; 7. Hydraulic cylinder; 8. Fixing plate; 9. Guide mechanism; 91. Guide channel; 92. Guide rail; 10. Water-retaining plate. Detailed Implementation

[0028] The arc gate provided by this utility model will be explained and described in detail below with reference to the accompanying drawings.

[0029] This embodiment specifically discloses an arc-shaped gate for use with an arc-shaped weir 1, such as... Figures 1-6 As shown, the arc-shaped gate includes multiple lifting gates 2. A gate receiving slot 11 is provided at the top center of the arc-shaped weir 1 along its length. The arc-shaped weir 1 can be constructed of reinforced concrete. Figure 1 and 3 As shown, the arc of the gate receiving groove 11 is the same as that of the arc-shaped weir 1, and the length of the gate receiving groove 11 is less than the length of the arc-shaped weir 1. The two ends of the gate receiving groove 11 are closed, that is, the gate receiving groove 11 does not penetrate through the two ends of the arc-shaped weir 1, thus preventing leakage. In the direction of water flow, the gate receiving groove 11 is located in the middle of the arc-shaped weir 1.

[0030] like Figures 1-3As shown, the plurality of lifting gates 2 are arranged along the length direction of the arc weir 1 in the gate accommodating groove 11, and the plurality of lifting gates 2 include arc-shaped gates 21 and linear gates 22, that is, the lifting gates 2 include two types of arc-shaped gates 21 and linear gates 22, the arrangement form of the arc-shaped gates 21 and the linear gates 22 in the gate accommodating groove 11 matches the arc of the arc weir 1, the number of the arc-shaped gates 21 and the linear gates 22 in the gate accommodating groove 11 is set according to the length and the arc of the gate accommodating groove 11, all the lifting gates 2 need to cover the gate accommodating groove 11, and the arc formed by all the arc-shaped gates 21 and the linear gates 22 matches the arc of the arc weir 1. In this embodiment, as shown in Figure 1 and 3 As shown, the two ends of the lifting gates 2 are linear gates 22, and the middle part of the lifting gates 2 are arc-shaped gates 21, which completely match the arc of the arc weir 1. The lifting gates 2 include a first state of being accommodated in the gate accommodating groove 11 and a second state of being raised to a top higher than the top of the gate accommodating groove 11 by lifting. The lifting gates 2 can be in the first state at the same time or in the second state at the same time, or part of them are in the first state and part of them are in the second state. In order to meet the synchronous requirement of the water retaining height, all the lifting gates 2 are in the same state at the same time. The lifting gates 2 can be raised at the same time or lowered at the same time, or can be raised or lowered individually, as long as they can finally reach the same state. When all the lifting gates 2 are in the first state, the water retaining height of the arc weir is the lowest, which is the height of the arc weir 1 itself; when all the lifting gates 2 are in the second state at the same height, the water retaining height of the arc weir is the height of the top of the lifting gate 2, and the water retaining height is increased, which improves the water storage capacity of the arc weir. The greater the lifting height of the lifting gate 2, the greater the water retaining height of the arc weir, and the stronger the water storage capacity of the arc weir.

[0031] As shown in Figure 1 The first and second lifting gates 2 on the left side of the figure are in the second state of being raised, and the first lifting gate 2 on the left side is raised to the highest position, and the remaining lifting gates 2 are in the first state of being accommodated in the gate accommodating groove 11. At this time, the water retaining height of the arc weir is the height of the arc weir 1 itself.

[0032] Taking the river water storage as an example, the arc weir 1 is arranged along the width direction of the river, the arc convex direction of the arc weir 1 is the water-facing surface, and the two ends of the top gate accommodating groove 11 of the arc weir 1 are provided with water retaining columns 13, the top height of the water retaining column 13 is not lower than the top height of the lifting gate 2 when it is raised to the highest position, so as to avoid the water flow passing between the river bank and the lifting gate 2.

[0033] As shown in Figure 4As shown, the first elastic water stop belt 3 is arranged at both ends of the lifting gate 2, and the first elastic water stop belts 3 on adjacent lifting gates 2 abut against each other to stop water, preventing water from flowing between the gates and having good water blocking capacity. Figure 3 As shown, the two first elastic water stop belts 3 at the most edge part abut against the water blocking column 13 respectively to achieve water blocking at both ends.

[0034] Preferably, the height of the first elastic water stop belt 3 is the same as the height of the lifting gate 2, that is, the first elastic water stop belt 3 is distributed at the end of the lifting gate 2 in the height direction, and no matter whether the two adjacent lifting gates 2 are lifted simultaneously or step by step, the two first elastic water stop belts 3 can abut against each other to achieve water stopping.

[0035] As shown, Figure 6 As shown, the top of the arc-shaped weir 1 is fixed with a second elastic water stop belt 4 along the length direction of the arc-shaped weir 1, the second elastic water stop belt 4 is arranged on the water-approaching surface of the gate accommodating groove 11 and extends towards the gate accommodating groove 11, used to close the gap between the water-approaching surface of the lifting gate 2 and the arc-shaped weir 1, preventing water from entering the gate accommodating groove 11.

[0036] The second elastic water stop belt 4 can be an integral structure along the length direction of the arc-shaped weir 1, and the length is not shorter than the length of the gate accommodating groove 11; the second elastic water stop belt 4 can also be a multi-segment structure along the length direction of the arc-shaped weir 1, and the second elastic water stop belts 4 are arranged closely, and the total length is not shorter than the length of the gate accommodating groove 11; the specific form of the second elastic water stop belt 4 is not specially limited in the present application, as long as it can achieve the water stopping effect.

[0037] In an alternative embodiment, as shown, Figure 4 The first elastic water stop belt 3 is U-shaped, the end of the lifting gate 2 is fixed inside the opening of the first elastic water stop belt 3 or fixedly connected with the opening end of the first elastic water stop belt 3, and the closed ends of the adjacent first elastic water stop belts 3 abut against each other. The closed end of the first elastic water stop belt 3 is arc-shaped. In the present embodiment, as shown, Figure 4 The end of the lifting gate 2 is provided with a fixed block 31, the opening end of the first elastic water stop belt 3 is sleeved outside the fixed block 31, the two sides of the first elastic water stop belt 3 are provided with second pressing plates 32, the first elastic water stop belt 3 is pressed on the fixed block 31 by the second pressing plates 32, the second pressing plates 32 and the fixed block 31 are connected by bolts to press the first elastic water stop belt 3 tightly on the fixed block 31. The fixed block 31 is provided with a threaded hole matched with the bolt, the second pressing plate 32 and the first elastic water stop belt 3 are provided with screw rod through holes, the screw rod of the bolt passes through the screw rod through holes of the second pressing plate 32 and the first elastic water stop belt 3 in turn and is screwed into the threaded hole of the fixed block 31, the second pressing plate 32 and the first elastic water stop belt 3 are clamped between the nut of the bolt and the fixed block 31, and then the first elastic water stop belt 3 is fixed.

[0038] In an alternative embodiment, the first elastic waterstop 3 is a rubber waterstop. On the one hand, the rubber waterstop has high structural strength and can intercept water flow. On the other hand, the rubber waterstop has large elastic deformation and good sealing effect.

[0039] In an alternative embodiment, as shown in Figure 6 , the bottom end of the water-facing surface of the lifting gate 2 is provided with a platform 23 protruding towards the water-facing direction. When the lifting gate 2 is raised to the highest position, the second elastic waterstop 4 abuts against the platform 23 for water stopping. When the lifting gate 2 is raised to the highest position, the backwater end of the second elastic waterstop 4 abuts against the water-facing surface of the lifting gate 2, and the bottom of the second elastic waterstop 4 abuts against the top surface of the platform 23 of the lifting gate 2, achieving good water stopping effect.

[0040] Optionally, as shown in Figure 6 , the second elastic waterstop 4 is in P shape. The straight part of the second elastic waterstop 4 is partially or entirely fixedly connected with the arc weir 1, and the annular part of the second elastic waterstop 4 extends above the gate accommodating groove 11. The annular part of the second elastic waterstop 4 abuts against the water-facing surface of the lifting gate 2, has large contact area, and has high structural strength and good water stopping effect relative to the straight part.

[0041] Optionally, the second elastic waterstop 4 is a rubber waterstop. The rubber waterstop has high structural strength and good sealing effect after abutting against the lifting gate 2.

[0042] Optionally, as shown in Figure 6 , the second elastic waterstop 4 is fixed on the arc weir 1 through a water stopping mounting plate 5 and a first pressing plate 6. The water stopping mounting plate 5 is fixed on the top of the arc weir 1, the second elastic waterstop 4 is pressed on the water stopping mounting plate 5 through the first pressing plate 6, and the end of the second elastic waterstop 4 close to the lifting gate 2 extends outside the water stopping mounting plate 5 and the first pressing plate 6. The first pressing plate 6 is pressed on the straight part of the second elastic waterstop 4 or the straight part and part of the annular part, and the end of the annular part away from the straight part is outside the first pressing plate 6, so as to ensure abutting against the lifting gate 2. The first pressing plate 6, the second elastic waterstop 4 and the water stopping mounting plate 5 can be fixed on the arc weir by bolts. The shanks of the bolts pass through the first pressing plate 6, the second elastic waterstop 4 and the water stopping mounting plate 5 in sequence and are screwed with the threaded holes on the arc weir 1. The nuts of the bolts are pressed on the first pressing plate 6, so that the first pressing plate 6, the second elastic waterstop 4 and the water stopping mounting plate 5 are fixed firmly and can be disassembled conveniently.

[0043] In an alternative embodiment, as shown in Figure 1 and 2As shown, the lifting gate 2 is driven to lift by the hydraulic cylinder 7, and each lifting gate 2 can be driven to lift by one or more parallel hydraulic cylinders 7; the inside of the arc-shaped weir 1 is provided with a mounting groove 12, the mounting groove 12 is arranged below the gate containing groove 11 and communicates with the gate containing groove 11, the hydraulic cylinder 7 is fixed in the mounting groove 12, one hydraulic cylinder 7 is installed in each mounting groove 12, and the piston of the hydraulic cylinder 7 is fixedly connected with the lifting gate 2. The hydraulic cylinder 7 is connected with the external hydraulic control system through a hydraulic pipe, and the extension and retraction work of the hydraulic cylinder 7 is realized by the control of the external hydraulic control system, so as to provide power for the vertical lifting of the lifting gate 2; all the lifting gates 2 can be lifted simultaneously, or each lifting gate 2 can be controlled individually, and the specific control form is not specially limited in the application. The height of the lifting gate 2 can be adjusted by controlling the length of the piston of the hydraulic cylinder 7 extending out of the cylinder body, when the piston extends to the maximum stroke, the lifting gate 2 is lifted to the highest position, and when the piston of all the hydraulic cylinders 7 extends to the maximum stroke, the water retaining height of the arc-shaped gate is the largest, and the water storage capacity is the largest.

[0044] Further, the mounting groove 12 is provided with a fixed plate 8, the fixed plate 8 can be arranged at the middle part in the vertical direction of the mounting groove 12, the fixed plate 8 can be pre-buried in the arc-shaped weir 1 during pouring of the arc-shaped weir 1, the cylinder body of the hydraulic cylinder 7 is fixedly connected with the fixed plate 8, and the fixing strength is enhanced.

[0045] In some embodiments, as shown in Figure 2 As shown, the inside of the arc-shaped weir 1 is provided with a guide groove 91, the guide groove 91 is arranged below the gate containing groove 11 and communicates with the gate containing groove 11, the bottom of the lifting gate 2 is fixed with a guide rail 92, the guide rail 92 extends into the guide groove 91 and can slide up and down relative to the guide groove 91, the fixed plate 8 can extend to the guide groove 91, the fixed plate 8 is provided with a hole through which the guide rail 92 passes, and the fixed plate 8 can play a limiting role. The guide rail 92 and the guide groove 91 cooperate to form a guide mechanism 9, and the guide mechanism 9 further ensures the stability of the lifting of the lifting gate 2.

[0046] In an alternative embodiment, as shown in Figure 6 As shown, the top of the lifting gate 2 is provided with a water retaining plate 10, the width of the water retaining plate 10 along the water flow direction is greater than the width of the top of the lifting gate 2 and extends to both sides of the lifting gate 2, the water retaining plate 10 is in an inverted U shape, when the lifting gate 2 is lowered to be accommodated in the gate containing groove 11, the water retaining plate 10 is inverted above the gate containing groove 11, the lower edge of the water retaining plate 10 is attached to the top surface of the arc-shaped weir 1, the top opening of the gate containing groove 11 is sealed, and the water flow is prevented from entering the gate containing groove 11.

[0047] The application can control the water retaining height of the arc weir by the design of the lifting arc gate matched with the arc of the arc weir, and further adjust the water storage capacity of the arc weir, and the water retaining height and the water storage capacity of the arc weir are improved compared with the design that the water retaining height is only the height of the arc weir 1. The height of the arc weir 1 can be set according to actual needs, and the arc weir 1 can retain and store water when the lifting gate 2 is lifted, and the arc weir 1 can release water when the lifting gate 2 is stored in the gate accommodating groove 11.

[0048] The arc gate of the application can be applied in a river channel or a landscape lake, and the lifting gate 2 is controlled to be lifted when water needs to be retained or stored, and the lifting gate 2 is controlled to be lowered and stored in the gate accommodating groove 11 of the arc weir 1 when water needs to be released.

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0050] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In the description of the present application, the description of the terms "the embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in at least one embodiment or example. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0052] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated. Thus, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0053] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and simple improvement made on the essential content of the present application shall be included in the protection scope of the present application.

Claims

1. An arc-shaped gate for use with an arc-shaped weir (1), characterized in that, The arc-shaped gate includes multiple lifting gates (2). A gate receiving groove (11) is provided at the top center of the arc-shaped weir (1) along the length direction of the arc-shaped weir (1). A plurality of lifting gates (2) are arranged in the gate receiving groove (11) along the length direction of the arc-shaped weir (1). The plurality of lifting gates (2) include arc-shaped gates (21) and straight gates (22). The arrangement of the arc-shaped gates (21) and the straight gates (22) in the gate receiving groove (11) matches the curvature of the arc-shaped weir (1). The lifting gates (2) are raised and lowered, including a first state of being housed in the gate receiving groove (11) and a second state of rising to a position higher than the top of the gate receiving groove (11). Both ends of the lifting gate (2) are provided with a first elastic waterstop (3), and the first elastic waterstops (3) on adjacent lifting gates (2) abut against each other to stop water. The top of the arc-shaped weir (1) is fixed with a second elastic waterstop (4) along the length direction of the arc-shaped weir (1). The second elastic waterstop (4) is set on the water-facing surface of the gate receiving groove (11) and extends towards the gate receiving groove (11) to seal the gap between the water-facing surface of the lifting gate (2) and the arc-shaped weir (1).

2. The arc-shaped gate according to claim 1, characterized in that, The bottom of the water-facing side of the lifting gate (2) is provided with a platform (23) protruding in the water-facing direction. When the lifting gate (2) rises to the highest point, the second elastic waterstop (4) abuts against the platform (23) to stop the water.

3. The arc-shaped gate according to claim 1, characterized in that, The second elastic waterstop (4) is P-shaped. The straight part of the second elastic waterstop (4) is partially or completely fixedly connected to the arc-shaped weir (1). The annular part of the second elastic waterstop (4) extends above the gate receiving groove (11).

4. The arc-shaped gate according to claim 1, characterized in that, The second elastic waterstop (4) is a rubber waterstop.

5. The arc-shaped gate according to any one of claims 1-4, characterized in that, The second elastic waterstop (4) is fixed on the arc-shaped weir (1) by the waterstop mounting plate (5) and the first pressure plate (6). The waterstop mounting plate (5) is fixed on the top of the arc-shaped weir (1). The second elastic waterstop (4) is pressed on the waterstop mounting plate (5) by the first pressure plate (6). The end of the second elastic waterstop (4) near the lifting gate (2) extends to the outside of the waterstop mounting plate (5) and the first pressure plate (6).

6. The arc-shaped gate according to claim 1, characterized in that, The first elastic waterstop (3) is U-shaped. The end of the lifting gate (2) is fixed inside the opening of the first elastic waterstop (3) or fixedly connected to the opening end of the first elastic waterstop (3). The closed ends of adjacent first elastic waterstops (3) abut against each other.

7. The arc-shaped gate according to claim 1 or 6, characterized in that, The first elastic waterstop (3) is a rubber waterstop.

8. The arc-shaped gate according to claim 1, characterized in that, The lifting gate (2) is driven to lift by a hydraulic cylinder (7). The arc-shaped weir (1) has an installation groove (12) inside. The installation groove (12) is located below the gate receiving groove (11) and communicates with the gate receiving groove (11). The hydraulic cylinder (7) is fixed in the installation groove (12), and the piston of the hydraulic cylinder (7) is fixedly connected to the lifting gate (2).

9. The arc-shaped gate according to claim 8, characterized in that, The mounting groove (12) is provided with a fixing plate (8), and the cylinder body of the hydraulic cylinder (7) is fixedly connected to the fixing plate (8).

10. The arc-shaped gate according to claim 1, 8, or 9, characterized in that, The arc-shaped weir (1) is provided with a guide groove (91) inside. The guide groove (91) is located below the gate receiving groove (11) and communicates with the gate receiving groove (11). The bottom of the lifting gate (2) is fixed with a guide rail (92). The guide rail (92) extends into the guide groove (91) and can slide up and down relative to the guide groove (91).

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