Middle transverse shaft type flap gate for navigation gate hole

Abstract

The utility model provides a middle transverse shaft type flap gate for a navigation gate hole, which stretches across the navigation gate hole, is used for retaining water, discharging flood and navigating, and comprises a gate bottom plate, two side gate piers, at least one middle gate pier, a shaft driving device, a transverse rotating shaft, a gate plate, middle supporting bearings and two side supporting bearings, and the number of the middle supporting bearings is in one-to-one correspondence with the number of the middle gate piers; equipment mounting cavities are formed in the two side gate piers; the middle gate piers are evenly distributed in gate holes between the two side gate piers and fixedly arranged on the gate bottom plate at intervals, and the middle supporting bearings are installed on the tops of the middle gate piers in a one-to-one correspondence mode. The transverse rotating shaft penetrates through each middle supporting bearing and each side supporting bearing; the transverse rotating shaft is fixedly connected with the vertical middle of the gate plate, and the gate plate comprises a lower plate part located below the transverse rotating shaft and an upper plate part located above the transverse rotating shaft. The gate for the navigation gate hole meets the requirements of safe operation, convenience in overhaul and maintenance and cost reduction at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy engineering equipment, in particular to a central horizontal axis flap gate used for a navigation lock hole. Background Art

[0002] There is a type of sluice in water conservancy projects that needs to be closed when the water level is low. When the water level reaches a certain height, the sluice is opened to flow and navigation is possible. The width of the navigation lock hole must comply with the provisions on waterway dimensions in the "Inland Navigation Standard" (GB50139-2022). For example, the minimum width of a single line of a Class I waterway is 70m. The gate structure of a large-span navigation lock hole is large in size, difficult to manufacture and install, and has a high project cost. Especially when the water retaining height exceeds 8m, the cost of the gate and its opening and closing equipment will increase rapidly.

[0003] At present, a widely used large-span gate is the bottom shaft flap gate. This type of flap gate is a rotating flat gate driven by a bottom shaft, that is, the gate leaf is fixed on the bottom shaft, and the bottom shaft is fixed on the sill of the gate bottom through a bearing device. The two ends of the bottom shaft pass through the gate wall and are connected to the opening and closing equipment arranged in the equipment room. The opening and closing equipment drives the bottom shaft to rotate within the range of 0 to 90 degrees, driving the gate leaf to flip to achieve water blocking (one-way or two-way water blocking). The problems and disadvantages of the existing traditional gates are: the bottom shaft is fixedly installed on the gate bottom sill, the gate top flows, and the height of the gate top is adjusted by rotating the bottom shaft to achieve the function of regulating the water level. With this traditional gate, when it is fully opened, the gate is parked in the gate chamber at the gate bottom plate; its gate chamber is at a lower position underwater, and it is easy for siltation to affect the opening and closing of the gate. At present, special silt flushing equipment is generally set up in projects for regular silt flushing. The disadvantages are that the project investment is increased, the equipment needs to be operated regularly, which increases the workload of operation management and the energy consumption of operation, and the silt flushing effect is not good, especially in projects with large gate chambers. If the silt in the gate chamber is not cleaned up in time, it will affect the opening and closing of the gate, and thus affect the safety of the project. In addition, the bottom-axis flap gate has only one door leaf, which is limited by the size of the door leaf structure and is not suitable for projects with a large water retaining height (greater than 8m). Utility Model Content

[0004] In view of this, it is necessary to propose a central horizontal axis flap gate for the navigation lock hole to address the above-mentioned problems, so as to overcome some shortcomings in the above-mentioned background technology and solve the technical problem of how to use the gate for the navigation lock hole to simultaneously meet the requirements of safe operation, convenient inspection and maintenance, and reduced construction cost.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model proposes a central transverse axis flap gate for a navigation lock hole, which spans the navigation lock hole and is used for water retaining, flood discharge and navigation. The gate comprises a gate bottom plate, two side gate piers, at least one middle gate pier, an axis driving device, a transverse rotating shaft, a gate plate, a number of middle support bearings corresponding to the number of middle gate piers, and two side support bearings; the two side gate piers are each provided with an equipment installation cavity; each middle gate pier is evenly distributed in the gate hole between the two side gate piers and is fixedly arranged on the gate bottom plate at intervals, and the middle support bearings are correspondingly installed on the top of the middle gate pier. ; The transverse rotating shaft passes through each middle support bearing and each side support bearing; the transverse rotating shaft is fixedly connected to the vertical middle part of the gate plate, and the gate plate includes a lower plate portion located below the transverse rotating shaft and an upper plate portion located above the transverse rotating shaft; when the gate plate is in a vertical state, the navigation lock hole is closed to block water and store water, and the water-blocking side of the gate plate is the front plate surface of the gate plate; when the gate plate is flipped to a horizontal state, the upper water flow channel area of ​​the navigation lock hole above the transverse rotating shaft is used as a waterway for ships to navigate, and the lower water flow channel area of ​​the navigation lock hole below the transverse rotating shaft is used to pass water and carry away sediment;

[0007] The building composed of the gate bottom plate, side gate piers and middle gate pier serves as the overall basic structure of the central horizontal axis flap gate; the top of the middle gate pier is not higher than the front plate surface of the gate when the gate is flipped to a horizontal state, so as to meet the requirements of navigation depth; the middle gate pier and the side gate pier jointly bear the horizontal water pressure when the gate blocks water;

[0008] The side support bearings are used to connect the ends of the transverse rotating shafts in a one-to-one correspondence;

[0009] The equipment installation cavity of the side gate pier is used to install the side support bearing, and at least one equipment installation cavity is provided with a shaft driving device; the shaft hole of the side gate pier through which the transverse rotating shaft passes is provided with a waterproof sealing device;

[0010] The shaft driving device is used to drive the transverse shaft to rotate;

[0011] The transverse rotating shaft is used to turn the gate plate around the axis of the transverse rotating shaft;

[0012] The gate plate is used to retain water and store water when closing the navigation lock hole, and is driven by the horizontal rotating shaft to flip.

[0013] Furthermore, the middle horizontal axis flap gate for the navigation lock hole also includes a front guide plate and a rear guide plate;

[0014] The front deflector is transversely fixedly arranged on the top of the middle gate pier and located in front of the transverse rotation axis. The front deflector is arranged between the upper water flow channel area of ​​the navigation gate hole close to the upstream and the lower water flow channel area of ​​the navigation gate hole; when the gate plate is flipped to a state suitable for navigation, the front plate surface of the gate plate is flush with the top surface of the front deflector, and the gate plate and the front deflector are butted with each other in a gap;

[0015] The rear deflector is transversely fixedly arranged on the top of the middle gate pier and located behind the transverse rotation axis. The rear deflector is arranged between the upper water flow channel area of ​​the navigation gate hole close to the downstream and the lower water flow channel area of ​​the navigation gate hole; when the gate plate is flipped to a state suitable for navigation, the front plate surface of the gate plate is flush with the top surface of the rear deflector, and the gate plate and the rear deflector are butted with each other in a gap;

[0016] The front guide plate is used to reduce the impact of the upstream water flow of the navigation lock hole on the turned gate plate, and to prevent foreign objects in the water from directly impacting the gate plate;

[0017] The rear guide plate is used to reduce the impact of water flowing through the navigation lock hole on the flipped gate.

[0018] Furthermore, when the gate plate closes the navigation lock hole, the gate plate is arranged to block water vertically; the initial flipping direction of the lower plate portion is opposite to the water flow direction of the flow channel of the navigation lock hole.

[0019] Furthermore, when the gate plate closes the navigation lock hole, the rotation angle range of the gate plate is 0-90°.

[0020] Furthermore, when the gate is flipped over to a state suitable for navigation, the front plate surface of the gate is arranged horizontally.

[0021] Furthermore, the bottom of the middle gate pier is fixed on the top surface of the gate bottom plate, and the rear plate surface of the upper plate portion of the gate plate after flipping is abutted against the top surface of the rear half of the middle gate pier close to the downstream of the navigation gate hole.

[0022] Furthermore, the lower plate portion includes at least two lower water retaining blades arranged at intervals, and the gap between two adjacent lower water retaining blades is a position-avoiding groove; when the gate plate closes the navigation gate hole, the middle gate pier is embedded in the position-avoiding groove; when the gate plate is turned over to a state suitable for navigation, the main wall of the middle gate pier leaves the position-avoiding groove;

[0023] The avoidance groove is used to facilitate the lower plate to avoid the middle gate pier.

[0024] Furthermore, a plurality of baffles are convexly provided on the inner side surfaces of the side gate piers and the middle gate piers; when the gate plate closes the navigation gate hole, the baffles are used to support and limit the lower plate portion.

[0025] Furthermore, the side gate piers and the middle gate piers are both provided with upstream and downstream inspection gate slots, which are used to improve the inspection conditions of the gates.

[0026] Furthermore, the lower plate portion is provided with a buoyancy box, and the buoyancy box is used to reduce the driving force of the shaft driving device.

[0027] The beneficial effects of the utility model are:

[0028] The utility model enables the gate hole for navigation of water conservancy projects to avoid being affected by silt accumulation when opening and closing, and has the advantages of a firm and economical structure; the utility model reduces the risk of silt accumulation affecting the safe operation of the gate, and has the advantages of a simple structure, simplified engineering layout and convenient operation and management, and can ensure water retaining safety, reduce the power of the driving device, and reduce operating energy consumption, thereby saving project investment, improving the reliability of safe operation of the gate, and improving the gate maintenance conditions. It is particularly suitable for navigation gate holes with a large water retaining height (greater than 8m). BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional structural schematic diagram of a middle horizontal axis flap gate for a navigation lock hole proposed by the utility model;

[0030] Figure 2 This is a front view of a middle horizontal axis flap gate for a navigation lock hole proposed by the utility model after the flip is completed and the observation angle is located upstream of the waterway;

[0031] Figure 3 It is a right view of a middle horizontal axis flap gate for a navigation lock hole proposed by the utility model when the gate plate closes the navigation lock hole;

[0032] Figure 4 It is a right view of a middle horizontal axis flap gate for a navigation lock hole proposed by the utility model when the gate plate is flipped to a state suitable for navigation, that is, after the gate plate is flipped;

[0033] Figure 5 It is a three-dimensional structural schematic diagram of a gate plate, a transverse rotating shaft, a middle supporting bearing and a side supporting shaft of a middle horizontal axis flap gate for a navigation lock hole involved in the utility model;

[0034] Figure 6 It is a force analysis diagram of a gate plate and a baffle part of a middle horizontal axis flap gate for a navigation lock hole involved in the utility model when the gate plate closes the navigation lock hole;

[0035] Description of reference numerals:

[0036] The gate bottom plate 1; the side gate pier 2; the middle gate pier 3; the shaft drive device 4; the horizontal rotating shaft 5; the gate plate 6; the upper plate part 61; the lower plate part 62; the avoidance groove 621; the lower water retaining blade 622; the baffle part 21; the middle support bearing 7; the front guide plate 9; the rear guide plate 8; the side support bearing 10; the water-passing lateral width b1 of the navigation lock hole; the height h of the gate plate 6; the upper water flow channel area 1a of the navigation lock hole; the lower water flow channel area 1b of the navigation lock hole; the width b2 of the gate plate 6. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be further clearly and completely described below in combination with the embodiments of the utility model. It should be noted that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0038] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", and "right" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0039] The terms "first", "second", "third", "fourth", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "second", "third", "fourth" features may explicitly or implicitly include one or more of the features.

[0040] Example 1

[0041] like Figure 1-Figure 6 As shown:

[0042] The present embodiment is a central transverse axis flap gate for a navigation lock hole, which spans the navigation lock hole and is used for water retaining, flood discharge and navigation. The gate includes a gate bottom plate 1, two side gate piers 2 (i.e., side gate piers), at least one middle gate pier 3, an axis driving device 4 (i.e., a starting and closing device), a transverse rotating shaft 5, a gate plate 6, a number of middle support bearings 7 and two side support bearings 10 corresponding to the number of the middle gate piers 3; both side gate piers 2 are provided with equipment installation cavities; each middle gate pier 3 is evenly distributed in the gate hole between the two side gate piers 2 and is fixedly arranged on the gate bottom plate 1 at intervals, and the middle support bearings 7 are installed on the top of the middle gate pier 3 one by one; the transverse rotating shaft 5 passes through each middle support shaft The bearing 7 and the supporting bearings 10 on each side; the transverse rotating shaft 5 is fixedly connected to the vertical middle part of the gate plate 6, and the gate plate 6 includes a lower plate portion 62 located below the transverse rotating shaft 5 (i.e., the lower part of the gate plate 6 when it is vertically arranged) and an upper plate portion 61 located above the transverse rotating shaft 5 (i.e., the upper part of the gate plate 6 when it is vertically arranged); when the gate plate 6 is in a vertical state, the navigation gate hole is closed to block water and store water, and the water-blocking side of the gate plate 6 is the front plate surface of the gate plate 6; when the gate plate 6 is flipped to a horizontal state, the upper water flow channel area 1a of the navigation gate hole above the transverse rotating shaft 5 is used as a waterway for ships to navigate, and the lower water flow channel area 1b of the navigation gate hole below the transverse rotating shaft 5 is used to pass water and carry away sediment;

[0043] The building composed of the gate bottom plate 1, the side gate pier 2 and the middle gate pier 3 serves as the overall basic structure of the central horizontal axis flap gate; the top of the middle gate pier 3 is not higher than the front plate surface of the gate plate 6 when the gate plate 6 is flipped to a horizontal state, so as to meet the requirements of the navigation depth; the middle gate pier 3 and the side gate pier 2 jointly bear the horizontal water pressure when the gate blocks water;

[0044] The side support bearings 10 are used to connect the ends of the transverse rotating shafts 5 in a one-to-one correspondence;

[0045] The equipment installation cavity of the side gate pier 2 is used to install the side support bearing 10, and at least one equipment installation cavity is provided with a shaft driving device 4; the shaft hole of the side gate pier 2 through which the transverse rotating shaft 5 passes is provided with a waterproof sealing device;

[0046] The shaft driving device 4 is used to drive the transverse shaft 5 to rotate;

[0047] The transverse rotating shaft 5 is used to turn the gate plate 6 around the axis of the transverse rotating shaft 5;

[0048] The gate plate 6 is used to block water and store water when closing the navigation lock hole and is driven by the transverse rotating shaft 5 to turn over.

[0049] Optimally, the middle transverse axis flap gate for the navigation lock hole further includes a front guide plate 9 and a rear guide plate 8;

[0050] The front deflector 9 is transversely fixedly arranged on the top of the middle gate pier 3 and located in front of the transverse rotation axis 5. The front deflector 9 is arranged between the upper water flow channel area 1a of the navigation gate hole and the lower water flow channel area 1b of the navigation gate hole close to the upstream. When the gate plate 6 is turned over to a state suitable for navigation, the front plate surface of the gate plate 6 is flush with the top surface of the front deflector 9, and the gate plate 6 and the front deflector 9 are gap-jointed.

[0051] The rear guide plate 8 is transversely fixedly arranged on the top of the middle gate pier 3 and is located behind the transverse rotation axis 5. The rear guide plate 8 is arranged between the upper water flow channel area 1a of the navigation gate hole and the lower water flow channel area 1b of the navigation gate hole close to the downstream. When the gate plate 6 is turned over to a state suitable for navigation, the front plate surface of the gate plate 6 is flush with the top surface of the rear guide plate 8, and the gate plate 6 and the rear guide plate 8 are gap-jointed.

[0052] The front guide plate 9 is used to reduce the impact of the upstream water flow of the navigation lock hole on the turned gate plate 6, and to prevent foreign objects in the water from directly impacting the gate plate 6;

[0053] The rear guide plate 8 is used to reduce the impact of the water flow passing through the navigation lock hole on the overturned gate plate 6.

[0054] Optimally, when the gate plate 6 closes the navigation lock hole, the gate plate 6 is arranged to block water vertically; the initial flipping direction of the lower plate portion 62 is opposite to the water flow direction of the flow channel of the navigation lock hole.

[0055] Optimally, when the gate plate 6 closes the navigation lock hole, the rotation angle range of the gate plate 6 is 0-90°.

[0056] Optimally, when the gate plate 6 is flipped to a state suitable for navigation, the front surface of the gate plate 6 is arranged horizontally.

[0057] Optimally, the bottom of the middle gate pier 3 is fixed on the top surface of the gate bottom plate 1, and the rear plate surface of the upper plate portion 61 of the gate plate 6 after flipping is abutted against the top surface of the rear half of the middle gate pier 3 near the downstream of the navigation gate hole.

[0058] Optimally, the lower plate portion 62 includes at least two lower water retaining blades 622 arranged at intervals, and the gap between two adjacent lower water retaining blades 622 is a position-avoiding groove 621; when the gate plate 6 closes the navigation gate hole, the middle gate pier 3 is embedded in the position-avoiding groove 621; when the gate plate 6 is turned over to a state suitable for navigation, the main wall of the middle gate pier 3 leaves the position-avoiding groove 621;

[0059] The avoidance groove 621 is used to facilitate the lower plate portion 62 to avoid the middle gate pier 3.

[0060] Preferably, the height h of the gate plate 6 is not less than eight meters.

[0061] Optimally, a plurality of baffles 21 are convexly provided on the inner side surfaces of the side piers 2 and the middle piers 3 ; when the gate plate 6 closes the navigation gate hole, the baffles 21 are used to support and limit the lower plate portion 62 .

[0062] Optimally, the side gate pier 2 and the middle gate pier 3 are both provided with an upstream inspection gate slot and a downstream inspection gate slot, which are used to improve the inspection conditions of the gate.

[0063] Optimally, the lower plate portion 62 is provided with a buoyancy box for reducing the driving force of the shaft driving device 4 .

[0064] Specifically, the utility model changes the position of the gate when it is fully opened by raising the position of the transverse rotating shaft 5, thereby preventing silt accumulation from affecting the safe operation of the gate, reducing the structural cross-sectional dimensions of the gate plate 6, simplifying the project layout and operation management, and ensuring water retaining safety, reducing the power of the driving device, and reducing the operating energy consumption by adjusting the position of the transverse rotating shaft 5, setting a buoyancy box, and setting an inspection gate. This saves project investment, improves the reliability of the safe operation of the gate, and improves the conditions for gate maintenance.

[0065] Specifically, when the gate plate 6 is upright, it closes the navigation lock hole to block water; when the water level is high, the gate leaf of the gate plate 6 is flat and is in the middle of the navigation lock hole, and flow can flow both above and below it. There is no building in the middle of the upper opening of the navigation lock hole, which can meet the requirements of navigation; a middle gate pier 3 is provided on the side of the lower opening of the navigation lock hole, and a maintenance door groove can be provided on the side gate pier 2, so that the gate can be inspected and repaired at normal water level; the utility model is particularly suitable for use as a working gate for lock holes with a large water retaining height (greater than 8m) that need to be navigable at high water levels.

[0066] Specifically, the transverse rotating shaft 5 is installed on the middle gate pier 3 through the middle supporting bearing 7, transmits loads such as water pressure and deadweight to the middle gate pier 3, and can rotate around its own axis.

[0067] Specifically, the opening below the transverse rotating shaft 5 is divided into N+1 low holes with smaller widths by N (N≥0) middle gate piers 3 , and each low hole is closed by a lower water retaining blade 622 .

[0068] Specifically, a buoyancy box may be provided at a designated position of the lower plate portion 62 to partially or completely balance the deadweight of the equipment when the gate is in water.

[0069] Specifically, the middle gate pier 3 is used to withstand the water pressure of the lower plate portion 62 , effectively reducing the horizontal load transmitted from the lower plate portion 62 to the transverse rotating shaft 5 .

[0070] Specifically, on the basis of a conventional bottom-axis flap gate, the utility model raises the position of the transverse rotating shaft 5, divides the navigation gate hole into an upper and lower part, and sets a middle gate pier 3 at the lower part of the navigation structure of the water conservancy project for installing a middle support bearing 7, and divides the opening below the transverse rotating shaft 5 into a plurality of low holes with smaller widths, thereby greatly reducing the water retaining height of the upper plate portion 61 and the force-bearing width of the single-leaf structure of the lower plate portion 62, thereby effectively reducing the cross-sectional dimensions of the upper plate portion 61 and the lower plate portion 62 structures, which can reduce the difficulty of manufacturing and installing the gate and save engineering investment.

[0071] Specifically, a buoyancy box may be provided at a specific position of the lower plate portion 62 as needed, which is used to partially or completely balance the deadweight of the equipment when the gate is in water, thereby reducing the load on the transverse rotating shaft 5 and the middle support bearing 7; the buoyancy of the buoyancy box balances the deadweight of the equipment when the gate is in water, which can greatly reduce the torque required for the gate to rotate when opening and closing, thereby effectively reducing the capacity of the gate opening and closing machine.

[0072] Specifically, Figure 6 As shown, the axis of the transverse rotating shaft 5 can be set above the water pressure action line of the gate fully closed and water-blocking condition. At this time, the water pressure forms a ground torque on the axis to ensure that the gate is in the closed position. There is no need to set a locking device for water blocking, which simplifies the equipment configuration and gate operation procedures.

[0073] Specifically, the side gate pier 2 can be provided with an inspection gate slot, and the gate can be inspected when the upstream water level is lower than the normal high water level; because the middle gate pier 3 is provided, the width of the inspection gate can be greatly reduced, thereby improving the inspection conditions of the working gate of the extra-large span orifice.

[0074] Specifically, the upper plate portion 61 and the lower plate portion 62 are fixed on the transverse rotating shaft 5, and the two ends of the transverse rotating shaft 5 pass through the gate wall of the side gate pier 2 and are connected to the opening and closing equipment of the equipment room arranged in the side gate pier 2; when the gate is fully opened, the upper and lower parts of the navigation gate hole can flow through, and there is no building in the middle of the upper waterway, which can meet the requirements of navigation; when the gate of the utility model is in operation: the shaft drive device 4 drives the transverse rotating shaft 5 to rotate within the range of 0 to 90 degrees, driving the upper plate portion 61 and the lower plate portion 62 to stand upright to block water, or lie down in the gate hole to flow through and navigate.

[0075] Specifically, the water retaining height of a conventional bottom-axis flap gate is only equivalent to the gate height of the present embodiment. Six lower water retaining blades 622 are provided at the lower part of the transverse rotating shaft 5 (the transverse span of the lower water retaining blades 622 is designed to be 14m according to specific circumstances). The total water retaining height is three times the height of the upper plate portion 61 (the height of the upper plate portion 61 is designed to be 8m according to specific circumstances) (the height of the lower plate portion 62 is designed to be 16m according to specific circumstances).

[0076] Specifically, Figure 6 As shown, the total water pressure action line P is below the transverse rotating shaft 5, and the torque formed on the axis ensures that the gate is in the closed position. Under normal circumstances, there is no need to set a locking device for water blocking, which simplifies the equipment configuration and gate operation procedures; the water pressure of the lower plate 62 is mainly transmitted to the middle gate pier 3 through the middle support bearing 7, reducing the load on the transverse rotating shaft 5 and the middle support bearing 7; the gate of this embodiment adopts a small span, multi-point support structure, which effectively reduces the cross-sectional size of the gate leaf structure, can reduce the difficulty of manufacturing and installing the gate and save engineering investment.

[0077] Specifically, the side gate pier 2 is arranged in the maintenance gate slot. The gate maintenance process of this embodiment is as follows: when the upstream water level is equal to or lower than the normal high water level, a special buoy device can be used in conjunction with the middle gate pier 3 to extend the maintenance gate slot from the top surface of the middle gate pier 3 to above the normal high water level, and a floating crane can be used to accurately operate the maintenance gate to enter the maintenance gate slot.

[0078] Specifically, the gate of this embodiment can be applied to still water opening and closing.

[0079] Example 2

[0080] Embodiment 2 is a further optimization of one of the technical solutions of Embodiment 1;

[0081] like Figure 1-Figure 6 As shown:

[0082] This embodiment proposes a central transverse axis flap gate for a navigation lock hole according to any one of the technical solutions in Embodiment 1, wherein the bottom of the middle gate pier 3 is fixedly arranged on the bottom surface of the navigation lock hole (i.e., the gate bottom plate 1), and the rear plate surface of the upper plate portion 61 of the gate plate 6 after the flipping is completed abuts against the top surface of the rear half of the middle gate pier 3 close to the downstream of the navigation lock hole.

[0083] Example 3

[0084] Embodiment 3 is an optimized application of one of the technical solutions of Embodiment 1 or 2;

[0085] like Figure 1-Figure 6 As shown:

[0086] This embodiment provides a navigation structure for a water conservancy project, comprising a middle horizontal axis flap gate for a navigation lock hole and a navigation lock hole as described in one of the technical solutions of Embodiment 1 or 2; the water-passing lateral width b1 of the navigation lock hole is more than three times the height of the gate plate 6 when the navigation lock hole is closed; the number of the middle gate piers 3 is at least two;

[0087] Optimally, the water-passing transverse width b1 of the navigation lock hole is not less than 40 meters; and the height h of the gate plate 6 is not less than 8 meters.

[0088] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A central horizontal axis flap gate for a navigation lock hole, spanning the navigation lock hole, used for water retaining, flood discharge and navigation, characterized in that: The gate comprises a gate bottom plate (1), two side gate piers (2), at least one middle gate pier (3), an axis driving device (4), a transverse rotating shaft (5), a gate plate (6), a number of middle support bearings (7) corresponding to the number of the middle gate piers (3), and two side support bearings (10); both side gate piers (2) are provided with equipment installation cavities; each middle gate pier (3) is evenly distributed in the gate hole between the two side gate piers (2) and is fixedly arranged on the gate bottom plate (1) at intervals; the middle support bearings (7) are correspondingly installed on the top of the middle gate pier (3); the transverse rotating shaft (5) passes through each middle support bearing (7) and each side support bearing (10) The transverse rotating shaft (5) is fixedly connected to the vertical middle part of the gate plate (6), and the gate plate (6) comprises a lower plate portion (62) located below the transverse rotating shaft (5) and an upper plate portion (61) located above the transverse rotating shaft (5); when the gate plate (6) is in a vertical state, the navigation gate hole is closed to block water and store water, and the water-blocking side of the gate plate (6) is the front plate surface of the gate plate (6); when the gate plate (6) is turned over to a horizontal state, the upper water flow channel area (1a) of the navigation gate hole above the transverse rotating shaft (5) is used as a waterway for ships to navigate, and the lower water flow channel area (1b) of the navigation gate hole below the transverse rotating shaft (5) is used to pass water and carry away sediment; The building composed of the gate bottom plate (1), the side gate piers (2) and the middle gate pier (3) serves as the overall basic structure of the central horizontal axis flap gate; the top of the middle gate pier (3) is not higher than the front plate surface of the gate plate (6) when the gate plate (6) is flipped to a horizontal state, thereby meeting the requirements of the navigable water depth; the middle gate pier (3) and the side gate pier (2) jointly bear the horizontal water pressure when the gate blocks water; The side support bearings (10) are used to connect the ends of the transverse rotating shafts (5) in a one-to-one correspondence; The equipment installation cavity of the side gate pier (2) is used to install the side support bearing (10), and at least one equipment installation cavity is provided with a shaft driving device (4); the shaft hole of the side gate pier (2) through which the transverse rotating shaft (5) passes is provided with a waterproof sealing device; The shaft driving device (4) is used to drive the transverse rotating shaft (5) to rotate; The transverse rotating shaft (5) is used to turn the gate plate (6) around the axis of the transverse rotating shaft (5); The gate plate (6) is used to block water and store water when closing the navigation lock hole, and is driven by the transverse rotating shaft (5) to turn over.

2. The central horizontal axis flap gate for navigation lock hole according to claim 1, characterized in that: The central transverse axis flap gate for the navigation lock hole also includes a front guide plate (9) and a rear guide plate (8); The front deflector (9) is transversely fixedly arranged on the top of the middle gate pier (3) and located in front of the transverse rotation axis (5), and the front deflector (9) is arranged between the upper water flow channel area (1a) of the navigation gate hole and the lower water flow channel area (1b) of the navigation gate hole close to the upstream; when the gate plate (6) is turned over to a state suitable for navigation, the front plate surface of the gate plate (6) is flush with the top surface of the front deflector (9), and the gate plate (6) and the front deflector (9) are gap-jointed; The rear guide plate (8) is transversely fixedly arranged on the top of the middle gate pier (3) and is located behind the transverse rotation axis (5). The rear guide plate (8) is arranged between the upper water flow channel area (1a) of the navigation gate hole and the lower water flow channel area (1b) of the navigation gate hole close to the downstream. When the gate plate (6) is turned over to a state suitable for navigation, the front plate surface of the gate plate (6) is flush with the top surface of the rear guide plate (8), and the gate plate (6) and the rear guide plate (8) are gap-jointed. The front guide plate (9) is used to reduce the impact of the water flow upstream of the navigation lock hole on the turned gate plate (6) and to prevent foreign matter in the water from directly impacting the gate plate (6); The rear guide plate (8) is used to reduce the impact of the water flow passing through the navigation lock hole on the turned gate plate (6).

3. The central horizontal axis flap gate for navigation lock hole according to claim 2, characterized in that: When the gate plate (6) closes the navigation lock hole, the gate plate (6) is arranged to block water vertically; the initial tilting direction of the lower plate portion (62) is opposite to the water flow direction of the flow channel of the navigation lock hole.

4. The central horizontal axis flap gate for navigation lock hole according to claim 2, characterized in that: When the gate plate (6) closes the navigation lock hole, the rotation angle range of the gate plate (6) is 0-90°.

5. The central horizontal axis flap gate for navigation lock hole according to claim 2, characterized in that: When the gate plate (6) is turned over to a state suitable for navigation, the front plate surface of the gate plate (6) is arranged horizontally.

6. The central horizontal axis flap gate for navigation lock hole according to any one of claims 1 to 5, characterized in that: The bottom of the middle gate pier (3) is fixed on the top surface of the gate bottom plate (1), and the rear plate surface of the upper plate portion (61) of the gate plate (6) after flipping is abutted against the top surface of the rear half of the middle gate pier (3) close to the downstream of the navigation gate hole.

7. The central horizontal axis flap gate for navigation lock hole according to claim 6, characterized in that: The lower plate portion (62) comprises at least two lower water retaining blades (622) arranged at intervals, and the gap between two adjacent lower water retaining blades (622) is a position-avoiding groove (621); when the gate plate (6) closes the navigation gate hole, the middle gate pier (3) is embedded in the position-avoiding groove (621); when the gate plate (6) is turned over to a state suitable for navigation, the main wall of the middle gate pier (3) leaves the position-avoiding groove (621); The avoidance groove (621) is used to facilitate the lower plate portion (62) to avoid the middle gate pier (3).

8. The central horizontal axis flap gate for navigation lock hole according to claim 7, characterized in that: A plurality of baffles (21) are convexly provided on the inner side surfaces of the side gate pier (2) and the middle gate pier (3); when the gate plate (6) closes the navigation gate hole, the baffles (21) are used to support and limit the lower plate portion (62).

9. The central horizontal axis flap gate for navigation lock hole according to claim 1, characterized in that: The side gate pier (2) and the middle gate pier (3) are both provided with an upstream inspection gate slot and a downstream inspection gate slot, and the inspection gate slot is used to improve the inspection conditions of the gate.

10. The central horizontal axis flap gate for navigation lock hole according to claim 1, characterized in that: The lower plate portion (62) is provided with a buoyancy box, which is used to reduce the driving force of the shaft driving device (4).

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