A large-span folding arc-shaped tide-blocking floating gate structure and use method thereof

Abstract

The present invention provides a large-span folding arc-shaped tide-blocking floating gate structure and a method for using the same. The structure is a double-door type and includes: two gate reservoirs, which are respectively arranged on both sides of a river channel; two gate units that are symmetrical on both sides, and the gate units are divided into upper and lower layers and can be folded and folded in the gate reservoir. Each gate unit includes an upper tide-blocking floating gate, a lower tide-blocking floating gate and an arc-shaped foundation. The radius of the upper tide-blocking floating gate is larger than that of the lower tide-blocking floating gate. One end of the upper tide-blocking floating gate and the lower tide-blocking floating gate are both hinged in the force-bearing pier on the bank side, and are arranged in different positions and concentrically. The arc-shaped foundation extends from the gate reservoir to the center of the river channel. The upper tide-blocking floating gate and the lower tide-blocking floating gate rotate and move from the edge of the gate reservoir to the center of the river channel around their hinge points along the arc-shaped foundation to unfold. During the tide-blocking operation, the arc-shaped foundation, the upper tide-blocking floating gate, the lower tide-blocking floating gate and the force-bearing pier on the bank side are combined to realize the function of blocking the tide.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic gates, and in particular relates to a large-span folding arc-shaped tide-blocking floating gate structure and a use method thereof. Background Art

[0002] According to the experience of moisture prevention in important coastal cities at home and abroad, building tide gates at river estuaries is an effective way to enhance the city's moisture prevention capabilities. By building gates at river estuaries to form an urban flood prevention system combining "tide gates + flood control walls", the flood prevention resilience of estuary cities can be enhanced.

[0003] The type of floating tide-blocking gate is an important consideration in the construction of tide-blocking gates. Factors such as the site selection, land occupation, navigation, river flow, maintenance, silt removal, and landscape effect all have a significant impact on the choice of gate type.

[0004] Although the existing arc-shaped tidal floating gates have many advantages such as mature technology, safety and reliability, easy maintenance, easy dredging, and the ability to achieve ultra-large span water retention, they occupy a large area as a whole, and the horizontal width of the land is equal to the horizontal width of the river. They cannot be used in areas that cannot provide a large area. Summary of the invention

[0005] Based on this, the present invention proposes a large-span folding arc-shaped tide-blocking floating gate structure and a method of use, which can block water with an ultra-large span, operate safely and reliably, have a strong and stable structure, can adapt to the existing riverbed layout, is easy to maintain and overhaul, and the entire structure occupies a small area.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A large-span folding arc-shaped tide-blocking floating gate structure, in the form of double doors, comprising:

[0008] Two sluice gates are located on opposite sides of the river;

[0009] Two gate units are symmetrical on both sides. The gate units are divided into two layers, upper and lower, which can be folded and folded in the gate reservoir. The two gate units are unfolded and merged to cut off the river for tide blocking operations. Each gate unit includes an upper tide blocking floating gate, a lower tide blocking floating gate and an arc foundation. The length of the upper tide blocking floating gate is greater than that of the lower tide blocking floating gate. One end of the upper tide blocking floating gate and the lower tide blocking floating gate are both hinged in the force-bearing pier on the shore side and are arranged concentrically in different positions. The shape of the arc foundation is adapted to the shape of the upper tide blocking floating gate and the lower tide blocking floating gate unfolded in the tide blocking state;

[0010] Among them, the upper tide-blocking floating gate and the lower tide-blocking floating gate rotate and move from the edge of the gate reservoir to the center of the river channel around their hinge points and unfold head to tail. By controlling the water injection volume of the upper tide-blocking floating gate and the lower tide-blocking floating gate, the ends of the upper tide-blocking floating gate and the lower tide-blocking floating gate away from the hinge point sink to the arc foundation. The arc foundation is used to provide upward support for the upper tide-blocking floating gate and the lower tide-blocking floating gate in the tide-blocking state.

[0011] Optionally, the upper tide-blocking floating gate comprises a first arc-shaped gate body, a first-grade truss and a first rotating ball hinge or a support hinge, the first arc-shaped gate body is fixed to the front end of the first-grade truss, the rear end of the first-grade truss is hinged to the load-bearing pier through a first rotating ball hinge or a support hinge, and the first arc-shaped gate body and the first-grade truss are both cavity structures;

[0012] The lower-level tide-blocking floating gate includes a second arc-shaped door body, a second truss and a second rotating ball joint or a support hinge. The second arc-shaped door body is arranged at the front end of the second truss. The rear end of the second truss is provided with a second rotating ball joint or a support hinge. The rear end of the second truss is hinged to the load-bearing pier through the second rotating ball joint or the support hinge and the hinge point is located directly below the hinge point of the first rotating ball joint or the support hinge. The second arc-shaped door body and the second truss are both cavity structures.

[0013] Furthermore, the first truss and / or the second truss is provided with a buoyancy box.

[0014] Optionally, it also includes a water injection and discharge system, which is used to control the amount of water injected into the upper tide-blocking floating gate and the lower tide-blocking floating gate. After the upper tide-blocking floating gate and the lower tide-blocking floating gate are respectively deployed to the working positions, the water injection and discharge system injects water into the upper tide-blocking floating gate and the lower tide-blocking floating gate until the bottom of the end of the upper tide-blocking floating gate and the lower tide-blocking floating gate away from the hinge point sinks to the arc foundation to form an overall tide-blocking system.

[0015] Furthermore, the upper tide-blocking floating gate also includes an upper driving system, and the upper driving system is used to drive the upper tide-blocking floating gate to rotate.

[0016] Optionally, the upper driving system is a power gear opening and closing system, which includes a gear unit and a rack arranged on the shore, and the rack is arranged along the curvature direction of the first arc-shaped door body of the upper tide-blocking floating gate, and the rotation of the upper tide-blocking floating gate is controlled by the engagement of the gear unit and the rack.

[0017] Optionally, the lower tide-blocking floating gate is rotated by a hydrodynamic thrust system or by towing by a tugboat.

[0018] Optionally, the upper tide-blocking floating gate is provided with a synchronous fixing device. When the upper tide-blocking floating gate is rotated from the folded and retracted position to the working position, the upper tide-blocking floating gate is connected to the lower tide-blocking floating gate through the synchronous fixing device to drive the lower tide-blocking floating gate to rotate synchronously. When the upper tide-blocking floating gate is in the working position, the synchronous fixing device disconnects the upper tide-blocking floating gate from the lower tide-blocking floating gate, and the lower tide-blocking floating gate is rotated by a hydrodynamic thrust system or towed by a tugboat and driven out from under the upper tide-blocking floating gate to its corresponding working position.

[0019] Optionally, the first rotating ball joint or support joint and the second rotating ball joint or support joint have a free movement within 180° in the horizontal direction and a free movement within 10° in the vertical direction.

[0020] Optionally, the upper tide-blocking floating gate and the lower tide-blocking floating gate are both equipped with a locking system. When the upper tide-blocking floating gate and the lower tide-blocking floating gate are respectively rotated to the working position, the locking system is activated to limit the horizontal displacement of the upper tide-blocking floating gate and the lower tide-blocking floating gate, but does not limit the up and down movement.

[0021] Optionally, the arc-shaped foundation is provided with a first slideway adapted to the bottom shape of the first arc-shaped door body and a second slideway adapted to the bottom shape of the second arc-shaped door body.

[0022] Furthermore, inside the lock chamber, the top elevation of the first slide is higher than the top elevation of the second slide, so that the lower tide-blocking floating gate is located directly below the upper tide-blocking floating gate when folded and retracted; outside the lock chamber, the top elevation of the first slide is lower than the top elevation of the second slide, and the arc foundations in the river channel are not higher than the planned river mud surface.

[0023] The present invention also provides a method for using a large-span folding arc-shaped tide-blocking floating gate structure, comprising:

[0024] Step S1: The upper and lower tide-blocking floating gates move synchronously toward the center of the river channel. When the two tide-blocking floating gates move to the working position of the upper tide-blocking floating gate, the upper tide-blocking floating gate stops moving, and the lower tide-blocking floating gate continues to unfold and move forward, and finally merges with the lower tide-blocking floating gate unfolded on the other side;

[0025] Step S2: Then the upper tide-blocking floating gate begins to sink, and stops when its top elevation is the same as that of the lower tide-blocking floating gate. Finally, the water flows through the gate gap to flush the floating mud on the arc foundation. After the floating mud is flushed into place, the upper and lower gates sink synchronously to the arc foundation, thereby blocking the river for tide-blocking operations. During the tide-blocking operation, the arc foundation, the upper tide-blocking floating gate, the lower tide-blocking floating gate and the load-bearing pier combination on the shore side realize the function of blocking the tide.

[0026] Due to the adoption of the above technical solution, the beneficial effects of the present invention include: the floor space of the land lock chamber of the tide-blocking gate is shortened, but the usable area for blocking the tide in the river channel is not reduced, the daily maintenance workload is small, the impact on shipping is small, and maintenance is convenient; the tide-blocking floating gate is folded and docked in the lock chamber on the shore when not in use, and artificial dry land maintenance can be carried out on the shore, and the daily operation and maintenance conditions are good. The present invention has many advantages such as being able to block water with a super-large span, clear force, safe and reliable operation, adapting to the current riverbed layout, convenient maintenance and repair, clever use of buoyancy, small floor space, no impact on navigation during non-tide-blocking periods, and being able to adapt to a certain amount of siltation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. 4 is a schematic structural diagram of a gate unit according to an embodiment of the present invention.

[0028] Figure 2 The schematic diagram of the structure of the gate in a tide-blocking state according to an embodiment of the present invention is shown in FIG.

[0029] Figure 3 for Figure 2 Schematic diagram of the structure in the other direction.

[0030] Figure 4 It is a schematic structural diagram of a gate unit in a folded and retracted state according to an embodiment of the present invention.

[0031] Figure 5 for Figure 3 A partial enlarged view of point A in the middle.

[0032] Description of Figure Numbers:

[0033] 10-Large span folding arc-shaped tide-blocking floating gate structure; 100-Gate reservoir; 200-Gate unit; 210-Upper tide-blocking floating gate; 211-First rotating ball joint or support hinge; 212-First truss; 213-First arc-shaped gate body; 220-Lower tide-blocking floating gate; 221-Second rotating ball joint or support hinge; 222-Second truss; 223-Second arc-shaped gate body; 230-Arm foundation; 240-Upper drive system; 241-Gear unit; 242-Rack; 300-Load-bearing pier; 400-Locking system. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first" and "second" 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 features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] In view of the problem that the existing arc-shaped tide-blocking gate occupies a large area, the present invention proposes a folding arc-shaped gate that can block water with an ultra-large span, is safe and reliable in operation, has a solid and stable structure, can adapt to the current riverbed layout, is easy to maintain and overhaul, cleverly utilizes buoyancy, and reduces the gate area by half. It is a new type of large-span folding arc-shaped tide-blocking gate structure that does not affect river navigation when not in use and allows a certain amount of siltation in the river.

[0041] See also Figures 1-2 For example, a large-span folding arc-shaped tide-blocking floating gate structure 10 is a double-door type, comprising:

[0042] Two gate reservoirs 100 are respectively arranged on the opposite sides of the river;

[0043] Two gate units 200 are symmetrical on both sides. The gate units 200 are divided into upper and lower layers and can be folded and folded in the gate reservoir 100. Each gate unit 200 includes an upper tide-blocking floating gate 210, a lower tide-blocking floating gate 220 and an arc foundation 230. The radius of the upper tide-blocking floating gate 210 is larger than that of the lower tide-blocking floating gate 220. One end of the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are hinged in the load-bearing pier 300 on the bank side, and are arranged in different positions and concentrically. The arc foundation 230 extends from the gate reservoir 100 to the center of the river channel. The upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 rotate and move from the edge of the gate reservoir 100 to the center of the river channel along the arc foundation 230 around their hinge points and unfold.

[0044] Among them, the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 rotate and move from the edge of the gate reservoir 100 to the center of the river channel around their hinge points and unfold head to tail. By controlling the water injection amount of the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220, the ends of the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 away from the hinge point sink to the arc foundation 230. The arc foundation 230 is used to provide upward support for the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 in the tide-blocking state.

[0045] When in use, the upper and lower layers of tide-blocking floating gates move synchronously toward the center of the river channel. When the two layers of tide-blocking floating gates move to the working position of the upper tide-blocking floating gate 210, the upper tide-blocking floating gate 210 stops moving, and the lower tide-blocking floating gate 220 continues to unfold and move forward, and finally merges with the lower tide-blocking floating gate 220 unfolded on the other side. Then the upper tide-blocking floating gate 210 begins to sink, and stops when its top elevation is the same as the lower tide-blocking floating gate 220. Finally, the water flow through the gate gap flushes the floating mud on the arc foundation 230. After the floating mud is flushed in place, the upper and lower gates sink synchronously to the arc foundation 230, thereby blocking the river for tide-blocking operations. During the tide-blocking operation, the arc foundation 230, the upper tide-blocking floating gate 210, the lower tide-blocking floating gate 220 and the force-bearing pier 300 on the bank side are combined to achieve the function of blocking the tidal current.

[0046] like Figure 3 As shown, in a specific embodiment, the lengths of the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are both smaller than the length of the gate reservoir 100 for accommodation. The gate reservoir 100 is fan-shaped or can be other shapes. One end of the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are respectively hinged to the side wall of a load-bearing pier 300 on the shore. The hinge point of the upper tide-blocking floating gate 210 is located at the lower tide-blocking floating gate 220. Directly above the hinge point, the two hinge points are arranged concentrically in different positions. When it is necessary to block the tide, the upper tide gate and the lower tide-blocking floating gate 220 rotate and move around their hinge points in a circular trajectory to the center of the river channel to merge and close, thereby cutting off the river for tide-blocking operations. After the gate unit 200 is closed (folded state) to the working position (expanded state), the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are connected end to end, and the folded arc gate is in a fully open state.

[0047] The overall structure of the gate unit 200 is divided into two symmetrical parts. Take one part as an example. Figure 4As shown, in one embodiment, each of the gate units 200 includes an upper tide-blocking floating gate 210, a lower tide-blocking floating gate 220 and an arc foundation 230, wherein the upper tide-blocking floating gate 210 includes a first arc-shaped gate body (all arc-shaped gate bodies are hollow structures, the same below), a first-grade truss 212 (the support pipe under the truss also serves as the first steel pipe floating body) and a first rotating ball joint or support joint 211, wherein the first-grade truss 212, the first arc-shaped gate body (its hollow structure) is fixed to the front end of the first-grade truss 212, and the first The rear end of the first truss 212 is hinged to the load-bearing pier 300 through a rotating ball joint or a support hinge; the lower tide-blocking floating gate 220 includes a second arc-shaped door body, a second first truss 222 and a second rotating ball joint or a support hinge. The second first truss 222 (the second steel pipe floating body) can be equipped with an appropriate amount of buoyancy boxes (set in the first truss) as needed. The second arc-shaped door body 223 (whose cavity structure also serves as a floating body) is set at the front end of the second first truss 222, and the rear end of the second second truss 222 is provided with a second rotating ball joint or a support hinge 221. The rotating ball joint or the support hinge is made of metal or high-strength material. The cavity structure of the first arc-shaped door body and the cavity structure of the first first truss 212 and / or the second arc-shaped door body 223 and the second first truss 222 can be connected or not connected to each other, and can be set according to actual needs.

[0048] In one embodiment, the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are provided with a water injection and discharge system, and the water injection and discharge system is used to control the water injection amount of the first-grade truss 212, the second-grade truss 222, the first curved door body 213, and the second curved door body 223. After the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are deployed to the working position, the water injection and discharge system is used to control the water injection amount of the first-grade truss 212 (steel pipe 222). The first arc gate body 213 and the second arc gate body 222 (a floating body, i.e., a cavity structure), the first arc gate body 213 and the second arc gate body 222 (a steel pipe floating body), the second arc gate body 223, the first arc truss 212 and / or the second arc truss 222 are provided with a buoyancy box (set as needed), and water is successively injected into each floating body according to demand, until the first arc gate body 213 (cavity structure) and the second arc gate body 223 (cavity structure) sink to the bottom arc foundation 230, forming an overall tide-proof system. On the contrary, after the tide-proof work is completed, the arc gate needs to return to the bank-side gate warehouse, first empty the first arc truss 212 and the first arc gate floating body, and then empty the second arc truss 222 and the second arc gate body 223 to avoid collision. The water injection and drainage system enables the gate to float in the water and also to sink into the arc-shaped foundation 230. During the opening and closing process of the tide-blocking floating gate, the tide-blocking floating gate discharges water, and the gate's own weight is offset by buoyancy, thereby reducing the power for opening and closing the gate. During the tide-blocking process, water is injected into the gate, and the water serves as part of the arc-shaped tide-blocking floating gate's own weight, thereby increasing the gate's stability.

[0049] In one embodiment, the upper tide-blocking floating gate 210 further includes an upper driving system 240 , and the upper driving system 240 is used to drive the upper tide-blocking floating gate 210 to rotate.

[0050] like Figure 5 As shown, in one embodiment, the upper driving system 240 is a power gear opening and closing system for controlling the rotation of the upper tide-blocking floating gate 210, and the power gear opening and closing system includes a gear unit 241 arranged on the shore and a rack 242 of the upper tide-blocking floating gate, and the rack 242 is arranged along the arc direction of the upper arc-shaped door body, and the rotation of the upper tide-blocking floating gate 210 is controlled by the meshing of the gear unit 241 and the rack 242 of the upper tide-blocking floating gate 210. When the upper tide-blocking floating gate 210 rotates from the folded and stowed position to the working position, the lower tide-blocking floating gate 220 is synchronously driven to rotate.

[0051] In another embodiment, the upper driving system 240 is a winch opening and closing system, and the power winch system includes a winch unit and multiple pulleys arranged on the shore to control the rotation of the upper tide-blocking floating gate 210. When the upper tide-blocking floating gate 210 rotates from the folded and retracted position to the working position, it synchronously drives the lower tide-blocking floating gate 220 to rotate synchronously.

[0052] The lower tide-blocking floating gate 220 is rotated by a hydrodynamic thrust system or a tugboat. The hydrodynamic system is a hydrodynamic thrust system (such as a propeller with an annular ring) or a power gear opening and closing system at both ends of the arc-shaped gate body. The hydrodynamic thrust system includes a spiral with an annular ring arranged in the lower tide-blocking floating gate 220. When the upper tide-blocking floating gate 210 moves into place, the lower tide-blocking floating gate 220 is pushed by the hydrodynamic system to unfold into the river channel; the power gear opening and closing system includes a gear unit arranged on the shore, a belt and a gear in the upper tide-blocking floating gate 210, and a rack of the lower tide-blocking floating gate 220. The belt and the gear are driven to rotate by the gear unit, thereby driving the lower tide-blocking floating gate 220 to rotate.

[0053] In one embodiment, the upper tide-blocking floating gate 210 is provided with a synchronous fixing device. When the upper tide-blocking floating gate 210 rotates from the folded and retracted position to the working position, the upper tide-blocking floating gate 210 is connected to the lower tide-blocking floating gate 220 through the synchronous fixing device to drive the lower tide-blocking floating gate 220 to rotate synchronously. When the upper tide-blocking floating gate 210 is located in the working position, the synchronous fixing device disconnects the upper tide-blocking floating gate 210 from the lower tide-blocking floating gate 220, and the lower tide-blocking floating gate 220 is rotated and driven out from under the upper tide-blocking floating gate 210 to its corresponding working position by a hydrodynamic thrust system or a tugboat. For example, the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are in a folded and retracted state in the gate reservoir 100, and the lower tide-blocking floating gate 220 is located directly below the upper tide-blocking floating gate 210; the upper tide-blocking floating gate 210 rotates from the gate reservoir 100 toward the river channel to a specified position, and the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 rotate synchronously. After the upper tide-blocking floating gate 210 is located in its working position, the lower tide-blocking floating gate 220 is driven out from under the upper tide-blocking floating gate 210 through the water power system or power gear opening and closing system installed at the end of the arc-shaped gate body in the lower layer, and the lower tide-blocking floating gate 220 continues to rotate along the arc-shaped foundation 230 to its corresponding working position.

[0054] In one embodiment, the triangular truss structure behind the gates of the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 is installed on a rotating ball hinge or a support hinge, and the first rotating ball hinge or the support hinge 211 and the second rotating ball hinge or the support hinge 221 have a free range of motion within 180° in the horizontal direction and a free range of motion within 10° in the vertical direction. That is, the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 have a free range of motion of 180° in the horizontal plane and a free range of motion of 10° in the vertical direction, which is convenient for the horizontal expansion of the gate and the up and down movement of the arc-shaped gate body.

[0055] In one embodiment, the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are both installed with a locking system 400. When the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220 are respectively rotated to the working position, the locking system is activated to limit the horizontal displacement of the upper tide-blocking floating gate 210 and the lower tide-blocking floating gate 220, but does not affect the vertical movement.

[0056] In one embodiment, the arc foundation 230 is provided with the first slideway adapted to the rotation trajectory of the first arc door body 213 and the second slideway adapted to the second arc rotation trajectory. The top elevation of the second slideway in the gate house 100 is higher than the top elevation of the first slideway, so that when the gate house is folded and retracted, the lower tide-blocking floating gate 220 is located directly below the upper tide-blocking floating gate 210; the top elevation of the second slideway outside the gate house 100 is lower than the top elevation of the first slideway, and when the river channel is blocked by tide, the top elevations of the lower tide-blocking floating gate 220 and the upper tide-blocking floating gate 210 are consistent, and the tide is blocked synchronously; the arc foundation 230 in the river channel is not higher than the planned river mud surface, and does not affect navigation. The arc foundation 230 can be a concrete structure, and the first slideway and the second slideway can be a slide chute. The arc foundation 230 can also be made of stacked stones.

[0057] The present invention also provides a method for using a large-span folding arc-shaped tide-blocking floating gate structure, comprising:

[0058] Step S1: The upper and lower tide-blocking floating gates move synchronously toward the center of the river channel. When the two tide-blocking floating gates move to the working position of the upper tide-blocking floating gate 210, the upper tide-blocking floating gate 210 stops moving, and the lower tide-blocking floating gate 220 continues to unfold and move forward, and finally merges with the lower tide-blocking floating gate 220 unfolded on the other side;

[0059] Step S2: Then the upper tide-blocking floating gate 210 begins to sink, and stops when its top elevation is the same as that of the lower tide-blocking floating gate 220. Finally, the water flows through the gate gap to flush the floating mud on the arc foundation 230. After the floating mud is flushed into place, the upper and lower gates sink synchronously to the arc foundation 230, thereby blocking the river for tide-blocking operations. During the tide-blocking operation, the arc foundation 230, the upper tide-blocking floating gate 210, the lower tide-blocking floating gate 220 and the force-bearing pier 300 on the shore side are combined to achieve the function of blocking the tide.

[0060] The present invention reduces the footprint of the land gate of the tide-blocking gate, but does not reduce the area used to block the tide in the river. The daily maintenance workload is small, the impact on shipping is small, and maintenance is convenient. The tide-blocking floating gate is folded and docked in the gate on the shore when not in use, and manual maintenance can be carried out on the shore, and the daily operation and maintenance conditions are good. The present invention has many advantages such as being able to block water with a super-large span, clear force, safe and reliable operation, free arrangement according to the current riverbed, convenient maintenance and repair, clever use of buoyancy, small footprint, no impact on navigation during non-tide-blocking periods, and adaptability to a certain amount of siltation.

[0061] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A large-span folding arc-shaped tide-blocking floating gate structure, in the form of a double door, characterized in that: include: Two sluice gates are located on opposite sides of the river; Two gate units are symmetrical on both sides. The gate units are divided into two layers, upper and lower, which can be folded and folded in the gate reservoir. The two gate units are unfolded and merged to cut off the river for tide blocking operations. Each gate unit includes an upper tide blocking floating gate, a lower tide blocking floating gate and an arc foundation. The length of the upper tide blocking floating gate is greater than that of the lower tide blocking floating gate. One end of the upper tide blocking floating gate and the lower tide blocking floating gate are both hinged in the force-bearing pier on the shore side and are arranged concentrically in different positions. The shape of the arc foundation is adapted to the shape of the upper tide blocking floating gate and the lower tide blocking floating gate unfolded in the tide blocking state; A water injection and discharge system, the water injection and discharge system is used to control the amount of water injected into the upper tide-blocking floating gate and the lower tide-blocking floating gate. After the upper tide-blocking floating gate and the lower tide-blocking floating gate are respectively deployed to the working position, the water injection and discharge system injects water into the upper tide-blocking floating gate and the lower tide-blocking floating gate until the bottom of the end of the upper tide-blocking floating gate and the lower tide-blocking floating gate away from the hinge point sinks to the arc foundation to form an overall tide-blocking system; The upper tide-blocking floating gate and the lower tide-blocking floating gate rotate and move from the edge of the gate reservoir to the center of the river channel around their hinge points to spread out end to end, and the water injection volume of the upper tide-blocking floating gate and the lower tide-blocking floating gate is controlled so that the ends of the upper tide-blocking floating gate and the lower tide-blocking floating gate away from the hinge points are sunk to the arc foundation, and the arc foundation is used to provide upward support for the upper tide-blocking floating gate and the lower tide-blocking floating gate in the tide-blocking state; The upper tide-blocking floating gate comprises a first arc-shaped gate body, a first-grade truss and a first rotating ball hinge or a support hinge, wherein the first arc-shaped gate body is fixed to the front end of the first-grade truss, and the rear end of the first-grade truss is hinged to the load-bearing pier through a first rotating ball hinge or a support hinge, and the first arc-shaped gate body and the first-grade truss are both cavity structures; The lower-level tide-blocking floating gate includes a second arc-shaped door body, a second truss and a second rotating ball joint or a support hinge. The second arc-shaped door body is arranged at the front end of the second truss. The rear end of the second truss is provided with a second rotating ball joint or a support hinge. The rear end of the second truss is hinged to the load-bearing pier through the second rotating ball joint or the support hinge and the hinge point is located directly below the hinge point of the first rotating ball joint or the support hinge. The second arc-shaped door body and the second truss are both cavity structures.

2. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 1 is characterized in that: The first truss and / or the second truss is provided with a buoyancy box.

3. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 1 is characterized in that: The upper tide-blocking floating gate also includes an upper driving system, and the upper driving system is used to drive the upper tide-blocking floating gate to rotate.

4. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 3 is characterized in that: The upper driving system is a power gear opening and closing system, which includes a gear unit and a rack arranged on the shore. The rack is arranged along the curvature direction of the first arc-shaped door body of the upper tide-blocking floating gate. The rotation of the upper tide-blocking floating gate is controlled by the engagement of the gear unit and the rack.

5. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 1 is characterized in that: The lower tide-blocking floating gate is rotated by a hydrodynamic thrust system or by towing by a tugboat.

6. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 1 or 5, characterized in that: The upper tide-blocking floating gate is provided with a synchronous fixing device. When the upper tide-blocking floating gate rotates from the folded and retracted position to the working position, the upper tide-blocking floating gate is connected to the lower tide-blocking floating gate through the synchronous fixing device to drive the lower tide-blocking floating gate to rotate synchronously. When the upper tide-blocking floating gate is located in the working position, the synchronous fixing device disconnects the upper tide-blocking floating gate from the lower tide-blocking floating gate, and the lower tide-blocking floating gate is rotated and driven out from under the upper tide-blocking floating gate to its corresponding working position by a hydrodynamic thrust system or a tugboat.

7. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 1 is characterized in that: The first rotating ball joint or support joint and the second rotating ball joint or support joint have a free movement within 180° in the horizontal direction and a free movement within 10° in the vertical direction.

8. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 1 is characterized in that: The upper tide-blocking floating gate and the lower tide-blocking floating gate are both equipped with a locking system. When the upper tide-blocking floating gate and the lower tide-blocking floating gate are respectively rotated to the working position, the locking system is activated to limit the horizontal displacement of the upper tide-blocking floating gate and the lower tide-blocking floating gate, but does not limit the up and down movement.

9. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 1 is characterized in that: The arc-shaped foundation is provided with a first slideway adapted to the bottom shape of the first arc-shaped door body and a second slideway adapted to the bottom shape of the second arc-shaped door body.

10. The large-span folding arc-shaped tide-blocking floating gate structure according to claim 9 is characterized in that: Inside the lock chamber, the top elevation of the first slide is higher than the top elevation of the second slide, so that the lower tide-blocking floating gate is located directly below the upper tide-blocking floating gate when folded and retracted; outside the lock chamber, the top elevation of the first slide is lower than the top elevation of the second slide, and the arc foundations in the river channel are not higher than the planned river mud surface.

11. The method for using the large-span folding arc-shaped tide-blocking floating gate structure according to claim 1, characterized in that: include: Step S1: The upper and lower tide-blocking floating gates move synchronously toward the center of the river channel. When the two tide-blocking floating gates move to the working position of the upper tide-blocking floating gate, the upper tide-blocking floating gate stops moving, and the lower tide-blocking floating gate continues to unfold and move forward, and finally merges with the lower tide-blocking floating gate unfolded on the other side; Step S2: Then the upper tide-blocking floating gate begins to sink, and stops when its top elevation is the same as that of the lower tide-blocking floating gate. Finally, the water flows through the gate gap to flush the floating mud on the arc foundation. After the floating mud is flushed into place, the upper and lower gates sink synchronously to the arc foundation, thereby blocking the river for tide-blocking operations. During the tide-blocking operation, the arc foundation, the upper tide-blocking floating gate, the lower tide-blocking floating gate and the load-bearing pier combination on the shore side realize the function of blocking the tide.

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