Self-floating gate system and control method

Abstract

This invention relates to the field of water conservancy and hydropower engineering, specifically to a self-floating gate system and control method. The system includes a gate body comprising multiple independent water chambers and counterweights at the bottom of each chamber. Supporting sliders are located at the bottom and sides of the gate body. A pivot trolley device is located at the first end of the gate body and connected to it via a telescopic device. The telescopic device includes a lifting head, a preload spring, and a sleeve base connected in sequence. The lifting head is hinged to the pivot trolley device via a ball joint mechanism, and the sleeve base is fixedly connected to the gate body. A guide device is fixedly located at the second end of the gate body and includes rollers and a push-pull mechanism, which extends or retracts the rollers. An embedded structure includes gate chamber embedded parts, guide channel embedded parts, and gate storage embedded parts. An electrical control system includes an electrical cabinet and a power supply unit, which supplies power to the self-floating gate system and controls the buoyancy of the gate body. The above-mentioned self-floating gate system is suitable for large-span flood discharge gates on large rivers and is safe and reliable.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and hydropower engineering, specifically to a self-floating gate system and control method. Background Technology

[0002] Large river sluice gates, in addition to conventional floodgates, require several large-span floodgates (generally with a single opening width greater than 40 meters) to reduce the obstruction of gate piers and create a wide and continuous water flow channel. This improves navigation capacity and provides suitable conditions for aquatic life such as finless porpoises to pass through. During non-flood seasons, the working gates of both types of floodgates are closed to maintain upstream water levels and improve the urban water landscape. During flood seasons, the gates are fully opened, allowing the upstream and downstream channels to return to a near-natural flow state. At this time, the river water level fluctuates significantly with the upstream flow. Self-floating gates, due to their advantages such as ultra-large span, low operating energy consumption, no need for high-altitude scaffolding, and good landscape effect, can be used in these large-span floodgates.

[0003] Traditional self-floating gates are typically used in environments with relatively stable water flow, generally as maintenance gates for ship locks and flood discharge gates. They are used approximately once every 5-10 years, a relatively infrequent application. They are usually stored in a dedicated gate storage facility at a remote location and then floated to the vicinity of the orifice when needed. Floating maintenance gates employ temporary positioning measures when the orifice is filled with water and sinks, resulting in poor positioning accuracy. They also require a separate temporary power supply, making the entire process time-consuming, complex, and posing certain safety risks. For self-floating gates used in large-span flood discharge gates, the operating conditions are even more complex and variable, including high flow rates, large water level fluctuations, and the effects of wind and waves. They also require at least one opening and closing per year, resulting in a relatively high usage frequency. These new application scenarios and functional requirements present new challenges to self-floating gates. Summary of the Invention

[0004] The technical problem to be solved by this invention is to overcome the shortcomings and defects mentioned in the background art above, and to provide a safe and reliable self-floating gate system suitable for large-span flood discharge gates in large rivers. To solve the above technical problem, the technical solution proposed by this invention is as follows:

[0005] A self-floating gate system includes: a gate body, comprising multiple independent water tanks and counterweights disposed at the bottom of the independent water tanks, wherein support sliders are provided at the bottom and both sides of the downstream face of the gate body;

[0006] A hinge trolley device is located at the first end of the door body and is connected to the door body through a telescopic device. The telescopic device includes a lifting head, a preload spring, and a sleeve base connected in sequence. The lifting head is hinged to the ball joint mechanism of the hinge trolley device, and the sleeve base is fixedly connected to the door body.

[0007] The guide device, fixedly installed at the second end of the door, includes rollers and a push-pull mechanism, through which the rollers are extended or retracted;

[0008] Embedded component structures include gate chamber embedded components, guide channel embedded components, and gate storage embedded components;

[0009] The gate chamber embedded component is installed in the fully closed position of the gate and includes a first bottom sill, a first main rail and a second main rail, a side sill and a first guide rail. The first bottom sill is located at the bottom of the gate body in the fully closed position and cooperates with the bottom of the gate body. The side sill is located downstream of the first bottom sill. The first main rail and the second main rail are located at both ends of the gate body in the fully closed position and are symmetrically arranged. The gate body can move up and down along the first main rail and the second main rail. The rail surface of the first guide rail faces the downstream side and cooperates with the roller of the guide device. The guide groove embedded component cooperates with the rotating trolley device to provide support and guidance for the rotating trolley device. The gate chamber embedded component includes a second bottom sill and a second guide rail. The second bottom sill is located at the bottom of the gate body in the fully open position and cooperates with the gate body. The rail surface of the second guide rail faces away from the flow channel and cooperates with the roller of the guide device.

[0010] The electrical control system, including the electrical cabinet and power supply unit, supplies power to the self-floating gate system and controls the buoyancy of the gate.

[0011] In one embodiment, the preload spring is a bidirectional disc spring preload piston structure, which is placed inside the sleeve base. The lifting head slides axially inside the sleeve base through the preload spring, generating axial displacement to adapt to the width direction deformation caused by the maximum temperature difference, so that the axial load is less than the rated bearing capacity of the hinge trolley device when the door body is deformed to its maximum extent.

[0012] In one embodiment, the hinged trolley device includes a main body, a main travel wheel set and a side travel wheel set disposed on the main body, and the guide groove embedded part includes two pairs of guide groove main rails and guide groove reverse rails that cooperate with each other. The main travel wheel set and the side travel wheel set are located in the guide groove formed by the guide groove main rails and the guide groove reverse rails.

[0013] In one embodiment, there are multiple side sills, discretely distributed on the downstream side of the first bottom sill, with the rail surface of the side sills facing the upstream side.

[0014] In one embodiment, a vibration damping system is also included, installed on the end of the door body near the guide device, comprising an elastic wheel assembly and a limiting slider. The elastic wheel assembly includes a roller seat, a roller, and an elastic buffer disposed between the roller seat and the door body. The door frame also includes a third guide rail for constraining the elastic wheel assembly and the limiting slider.

[0015] In one embodiment, the power supply device includes a cable chain and an underwater-specific anti-torsion cable. The underwater-specific anti-torsion cable is led out from the electrical cabinet and reaches the door body via the cable chain. The underwater-specific anti-torsion cable has a reserved redundant length at the hinge to accommodate 90° rotation.

[0016] In one embodiment, rubber water-stop devices are provided on both sides and the bottom of the gate. When the gate is fully closed and sinks into place, the water-stop devices contact the embedded structure and are pre-pressed to form a seal.

[0017] In one embodiment, the support slider is a plastic alloy composite slider, which includes multiple first side sliders, multiple second side sliders and multiple bottom sliders. When the gate is fully closed and the water is being filled, drained and floated, the first side sliders and the second side sliders cooperate with the first main rail and the second main rail, respectively.

[0018] In one embodiment, the door's filling and draining device includes a filling pipeline, a draining pipeline, a valve connected to the filling pipeline and the draining pipeline, and a water pump.

[0019] Based on the same inventive concept, a control method for the above-mentioned self-floating gate system is also provided, comprising:

[0020] When the self-floating gate is opened, the water pump of the filling and draining device is started to drain the water from each independent water tank of the gate. Under the guidance of the hinge trolley device, the guide device and the support slider, the gate gradually floats up to the no-load draft level.

[0021] Retract all the rollers of the guide device;

[0022] The gate is pushed by a tugboat, causing it to rotate around the hinge trolley and into place inside the gate housing. A pushing force is applied to the river side to compress the elastic wheel assembly. The rollers of the guide device are then fully extended, and the pushing force is removed.

[0023] When closing the self-floating gate, the tugboat applies a pushing force to the gate body, causing the elastic wheel assembly to be compressed to the pre-tightened state again, and then the rollers of the guide device are fully retracted.

[0024] The gate body is rotated in the opposite direction around the hinge trolley by using a tug wheel to pull the gate body into the fully closed position, and the rollers of the guide device are fully extended.

[0025] Water is filled into each independent water tank of the gate, and the gate gradually sinks to the first sill under the combined constraints of the hinge trolley device, the guide device, and the support slider.

[0026] Compared with existing technologies, the beneficial effects of this invention are as follows: For large-span structures, the self-floating gate system of this invention forms a load-bearing interface with the discretely distributed side sills and the first and second main rails on both sides, effectively constraining the deflection deformation of the gate body and efficiently transmitting water pressure; the telescopic device can actively generate displacement when the temperature difference causes overload in the gate width direction, controlling the load within the rated bearing capacity of the hinge trolley device and preventing overload failure of key components. This invention innovatively integrates the multi-degree-of-freedom adaptability of the hinge trolley device, the deformation coordination mechanism of the telescopic device, and the flexible positioning function of the guide device in the fully open / fully closed position of the gate, systematically solving the operational problems of floating gates in large-span flood discharge gates of large rivers under complex working conditions such as large water level fluctuations, large flow rates, wind and waves, and temperature difference deformation. The gate can obtain reliable constraint and self-adaptive capabilities in three core states: planar rotation, fully closed water blocking, and fully open storage, significantly improving positioning accuracy, structural safety, and operational convenience, and expanding the application range of traditional floating gates.

[0027] When the gate is fully closed, the horizontal rotation and tilt of the gate are effectively limited by the cooperation of the rollers extending from the guide device with the first guide rail of the gate chamber, the vertical constraint of the pivot trolley device, and the coordinated action of the supporting sliders on both sides of the gate body with the first and second main rails. Simultaneously, during the sinking and floating process, the filling and draining device dynamically controls the gate's attitude, preventing it from exceeding the tilt angle limit during sinking or floating, thus ensuring operational stability. When the gate is in a planar rotation state, the pivot trolley device grants it a vertical translational degree of freedom and three rotational degrees of freedom in the water, while only constraining the lateral and longitudinal translational degrees of freedom, giving the gate excellent self-adaptive capabilities to adapt to water surface fluctuations and water level changes. When the gate is fully open, the rollers extending from the guide device cooperate with the second guide rail of the gate. Combined with the vertical movement freedom of the pivot trolley device and the synergistic effect of the pre-compressed vibration damping system and the third guide rail, they jointly suppress the lateral drift (i.e., planar rotation) and tilt of the gate. The floating gate itself has strong anti-overturning capability, enabling the constraint system to effectively maintain the stability of the gate under wave action. Even in the event of large waves, the wave load can be borne by the limit sliders of the pivot trolley device and the vibration damping system, preventing the gate from becoming unstable. After the waves recede, the gate automatically resets, demonstrating good dynamic adaptability and self-resetting capability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall layout of a self-floating gate system according to one embodiment;

[0030] Figure 2 yes Figure 1 Downstream view of a self-floating gate;

[0031] Figure 3 yes Figure 1 Upstream view of a self-floating gate;

[0032] Figure 4 yes Figure 1 A: Sectional view of section A;

[0033] Figure 5 yes Figure 1 A partial view of section A;

[0034] Figure 6 yes Figure 1 A partial view of section B;

[0035] Figure 7 yes Figure 1 A partial view of section C;

[0036] Figure 8 yes Figure 4 A partial view of section D in the middle;

[0037] Figure 9 yes Figure 5 B: Sectional view of B;

[0038] Figure 10 yes Figure 1 A schematic diagram of the dynamic connection between the telescopic device 2 and the pivot trolley device 3;

[0039] Figure 11 yes Figure 1 A three-dimensional schematic diagram of the connection structure between the telescopic device 2 and the pivot trolley device 3;

[0040] Figure 12 yes Figure 1 A three-dimensional structural diagram of the transfer hinge trolley device 3;

[0041] Figure 13 yes Figure 1 A three-dimensional structural diagram of the telescopic device 2;

[0042] Figure 14 yes Figure 1 Cross-sectional view of the telescopic device 2;

[0043] Figure 15 yes Figure 2 System schematic diagram of the infill drainage device;

[0044] In the diagram: 1: Gate body; 2: Telescopic device; 3: Hinged trolley device; 4: Guide device; 5: Water-stopping device; 6: Support slider; 7: Inlet and outlet drainage device; 8: Vibration reduction system; 9: Embedded structure; 10: Electrical cabinet; 11: Power supply device; 12: High-precision triaxial inclinometer; 13: Water level gauge; 14: Tugboat; 15: Safety rope; 16: Conventional flood discharge gate working gate;

[0045] 1.1: Central water tank; 1.2: Side water tank; 1.3: Climax water tank; 1.4: Bottom tank; 1.5: Vent pipe; 1.6: Counterweight; 1.7: First mounting base; 1.8: Second mounting base; 1.9: Walkway; 1.10: Mooring bollard; 1.11: First equipment compartment; 1.12: Second equipment compartment; 1.13: Longitudinal bulkhead; 1.14: Ear plate;

[0046] 2.1: Lifting head; 2.2: Preload spring; 2.3: Sleeve base;

[0047] 3.1: Main travel wheel assembly; 3.2: Side travel wheel assembly; 3.3: Ball joint mechanism;

[0048] 4.1: Rollers; 4.2: Push-pull mechanism; 4.3: Hydraulic system;

[0049] 5.1: First side water stop; 5.2: Second side water stop; 5.3: Bottom water stop;

[0050] 6.1: First side slider; 6.2: Second side slider; 6.3: Bottom slider;

[0051] 7.1: Piping; 7.2: Valves; 7.3: Water pumps;

[0052] 8.1: Elastic wheel assembly; 8.2: Limiting slider;

[0053] 9.1: Embedded parts for the gate chamber; 9.2: Embedded parts for the gate vault; 9.3: Embedded parts for the guide groove;

[0054] 9.1.1: First bottom sill; 9.1.2: First main rail; 9.1.3: Second main rail; 9.1.4: Side sill; 9.1.5: First guide rail;

[0055] 9.2.1: Second bottom sill; 9.2.2: Second guide rail; 9.2.3: Third guide rail; 9.2.4: Embedded support;

[0056] 9.3.1: Main guide rail; 9.3.2: Reverse guide rail;

[0057] 11.1: Cable chain; 11.2: Cable. Detailed Implementation

[0058] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0059] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention.

[0060] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0061] See Figures 1-15 The self-floating gate system of one embodiment of the present invention mainly includes a gate body 1, a telescopic device 2, a hinge trolley device 3, a guide device 4, a water-stopping device 5, a support slider 6, a filling and draining device 7, a vibration reduction system 8, a pre-embedded part structure 9, an electrical cabinet 10, a power supply device 11, a high-precision triaxial inclinometer 12, a water level gauge 13, and a safety rope 15.

[0062] Specifically, the self-floating gate orifice width is 75m, which is currently the largest self-floating gate in China, and it is the first time that it has been used as a working gate of a large-span flood discharge gate on a large river. Of course, in other embodiments, the self-floating gate orifice can be adjusted according to actual conditions. The self-floating gate system of the present invention is used when the gate orifice size is large, and it is preferably used in conjunction with the conventional flood discharge gate working gate 16.

[0063] Specifically, the gate 1 includes multiple independently arranged water tanks in layers and counterweights 1.6 at the bottom. In one embodiment, the gate 1 has five independent water tanks, including a central water tank 1.1 in the middle of the first layer, side water tanks 1.2 on both sides of the second layer, and regulating water tanks 1.3 on both sides of the third layer. Each water tank has an independent vent pipe 1.5 extending to the top deck of the gate to ensure pressure balance inside and outside the tank during filling and draining. Counterweights 1.6 are installed on the bottom tanks 1.4 on both sides of the central water tank 1.1 of the first layer. The dimensions of each water tank and the weight of the counterweights 1.6 are determined through stability calculations to meet the requirements of an unloaded draft of 4.0m and a center of gravity height greater than 2m. More specifically, preferably, each side water tank 1.2 has two longitudinal bulkheads 1.13 to reduce the influence of the free liquid surface and improve the stability of the gate 1 during filling and draining. Each independent water tank is connected to a filling and draining device 7. The filling and draining device 7 mainly includes pipelines 7.1 (filling pipelines and draining pipelines), valves 7.2, and water pumps 7.3, responsible for the sinking and floating operation of the gate 1. The filling and draining pipelines of each water tank are arranged independently. Preferably, a high-precision triaxial inclinometer 12 (accuracy ±0.001°) is installed at the center of the top of the gate 1. The electrical cabinet 10 monitors the attitude of the gate 1 and controls each valve 7.2 and water pump 7.3 through the high-precision triaxial inclinometer 12 to help maintain the stability of the gate 1 during the sinking and floating process. A water level gauge 13 is installed at the bottom of each water tank to determine the water level in each tank. The valves 7.2 and water pumps 7.3 are installed in the first equipment compartment 1.11.

[0064] The bottom and sides of the door body 1 are provided with support sliders 6. The support sliders 6 are made of plastic alloy composite sliders. Specifically, the support sliders 6 include a first side slider 6.1, a second side slider 6.2, and a bottom slider 6.3. In this embodiment, there are 16 first side sliders 6.1 and 16 second side sliders 6.2 arranged on the sides of the door body 1, and 12 bottom sliders 6.3. The bottom sliders 6.3 are discretely arranged on the lower downstream side of the door body 1, and the support sliders 6 are fixed to the door body 1 with bolts.

[0065] Specifically, the telescopic device 2 includes a lifting head 2.1, a preload spring 2.2, and a sleeve base 2.3. The pivot trolley device 3 includes a body, a main travel wheel set 3.1, a side travel wheel set 3.2, and a ball joint mechanism 3.3 mounted on the body. The ball joint mechanism 3.3 uses a custom-made self-lubricating spherical joint bearing. The lifting head 2.1 is hinged to the ball joint mechanism 3.3 of the pivot trolley device 3. The preload spring 2.2 adopts a two-way disc spring preload piston structure and is placed inside the sleeve base 2.3. The lifting head 2.1 can slide axially within the sleeve base 2.3 through the preload spring 2.2. The sleeve base 2.3 is fixedly connected to the first mounting seat 1.7 of the door body 1 by bolts. When the axial (gate width direction) load is less than the maximum bearing capacity of the floating gate under non-water-blocking conditions, the expansion joint 2 does not generate axial displacement, maintaining the rigid connection between the gate body 1 and the rotating trolley device 3. When the axial load exceeds the limit, the expansion joint 2 generates axial displacement to adapt to the width direction deformation caused by the maximum temperature difference when the large-span gate blocks water. When the gate is at its maximum deformation, the axial load is less than the rated bearing capacity of the rotating trolley device 3, ensuring that the rotating trolley device 3 works normally and is not overloaded. For example, if the temperature difference is 30 degrees, when the gate body undergoes temperature deformation in the width direction, the internal stress is released by the compression deformation of the disc spring, avoiding damage to the rotating trolley device 3 due to excessive load caused by axial displacement.

[0066] The guiding device 4 includes a roller 4.1 and a push-pull mechanism 4.2. The push-pull mechanism 4.2 is driven by a hydraulic system 4.3, which is installed in the second equipment compartment 1.12. In other embodiments, other driving methods may also be used. The extension or retraction of the roller 4.1 is achieved through the push-pull mechanism 4.2. Specifically, the push-pull mechanism 4.2 is fixed to the second mounting base 1.8 of the door body 1. The central axis of the roller 4.1 is on the same transverse centerline as the center of the ball hinge mechanism 3.3, ensuring that there is no additional bending moment when the door body 1 tilts laterally.

[0067] The water-stopping device 5 includes a first side water-stop 5.1, a second side water-stop 5.2, and a bottom water-stop 5.2. The first side water-stop 5.1 and the second side water-stop 5.2 are arranged on both sides of the gate body 1 using P-type rubber water seals. The bottom water-stop 5.2 is arranged on the bottom edge of the downstream side of the gate using an outer L-type water seal. The water-stopping device 5 is fixed to the gate body 1 with bolts.

[0068] The vibration damping system 8 includes an elastic wheel assembly 8.1 and a limiting slider 8.2. More specifically, the elastic wheel assembly 8.1 includes a roller seat, a non-metallic roller, and an elastic buffer (such as a disc spring or polyurethane spring) disposed between the roller seat and the gate body 1; the limiting slider 8.2 is a plastic alloy composite slider. The vibration damping system 8 is bolted to the gate body 1. When the self-floating gate is stored in the gate magazine, the elastic wheel mechanism of the vibration damping system 8 is in a pre-compressed state, thereby suppressing gate vibration caused by waves.

[0069] The embedded component structure 9 includes the gate chamber embedded component 9.1, the gate storage embedded component 9.2, and the guide groove embedded component 9.3.

[0070] Specifically, the gate chamber embedded part 9.1 is installed in the fully closed position of the gate, including a first bottom sill 9.1.1, a first main rail 9.1.2 (vertical direction), a second main rail 9.1.3 (vertical direction), and multiple side sills 9.1.4. The upstream end of the support where a single side sill 9.1.4 is located has an arc-shaped structure, avoiding the problem of large amounts of siltation and increased operation and maintenance costs on the upstream side that are easily generated by using conventional continuous side sill structures. In one embodiment, the rail surface of the side sill 9.1.4 faces the upstream side, and the rail surface of the side sill 9.1.4 (the working surface used to support the bottom slider) is coplanar with the rail surfaces of the first main rail 9.1.2 and the second main rail 9.1.3. In another embodiment, the center of the rail surface of the side sill 9.1.4 is distributed on a catenary line symmetrical about the center line of the orifice, with the center of the first main rail 9.1.2 and the second main rail 9.1.3 as the endpoints. The first bottom sill 9.1.1 is arranged horizontally, and the first main rail 9.1.2, the second main rail 9.1.3, the side sill 9.1.4, and the first guide rail 9.1.5 are arranged perpendicularly to the first bottom sill 9.1.1. The first main rail 9.1.2 and the second main rail 9.1.3 are located at the two ends of the gate body 1 in the fully closed position and are symmetrically arranged. When the gate body 1 floats up and down, it moves up and down along the first main rail 9.1.2 and the second main rail 9.1.3. The surfaces of the first main rail 9.1.2 and the second main rail 9.1.3 are coplanar and face the upstream side. The first guide rail 9.1.5 is oblique to the second main rail 9.1.3, and the rail surface faces the downstream side. The rail surface of the first guide rail 9.1.5 cooperates with the roller 4.1 of the guide device 4 and maintains a certain gap.

[0071] The gate housing component 9.2 is installed in the fully open position of the gate and includes a second bottom sill 9.2.1, a second guide rail 9.2.2, and a third guide rail 9.2.3 (used to constrain the elastic wheel assembly 8.1). The second guide rail 9.2.2 and the first guide rail 9.1.5 are symmetrical after rotating 90° around the center of the ball hinge mechanism 3.3 and translating towards the flow channel. When the gate body 1 is in the fully open position, the roller 4.1 extending from the guide device 4 cooperates with the second guide rail 9.2.2 located in the gate housing. Combined with the vertical movement freedom of the rotating trolley device 3 and the synergistic effect of the vibration damping system 8 in the pre-compressed state and the third guide rail 9.2.3, the lateral drift (i.e., planar rotation) and tilt of the gate are jointly suppressed. The gate body 1 of the self-floating gate itself has strong anti-overturning ability, so that under the action of waves, the constraint system can effectively maintain the stability of the gate. Even when encountering large waves, the wave load can be borne by the limiting slider of the pivot trolley device 3 and the vibration reduction system 8, preventing the gate from becoming unstable, and automatically resetting the gate after the waves recede, demonstrating good dynamic adaptability and self-resetting capability.

[0072] Preferably, the elevation of the upper surface of the second bottom threshold 9.2.1 should be higher than the elevation of the upper surface of the first bottom threshold 9.1.1 to prevent a large amount of riverbed sediment from entering the gate reservoir.

[0073] The guide groove embedded part 9.3 includes two pairs of cooperating guide groove main rails 9.3.1 and guide groove reverse rails 9.3.2. The main traveling wheel set 3.1 and the side traveling wheel set 3.2 are located in the guide groove formed by the guide groove main rails 9.3.1 and the guide groove reverse rails 9.3.1. The guide groove main rail 9.3.1 is provided with a structure that matches the side traveling wheel set 3.2. The guide groove embedded part 9.3 is vertically arranged in the area between the gate chamber and the gate vault, forming a shared structure for both. It cooperates with the main traveling wheel set 3.1 and the side traveling wheel set 3.2 of the pivot trolley device 3, and provides them with support and guidance functions. The main traveling wheel set 3.1 and the side traveling wheel set 3.2 of the pivot trolley device 3 travel freely vertically within the track formed by the guide groove main rails 9.3.1 and the guide groove reverse rails 9.3.1, and transfer the horizontal load to the guide groove embedded part 9.3.

[0074] The electrical control system includes an electrical cabinet 10 and a power supply unit 11, which supplies power to the self-floating gate system and controls the buoyancy of the gate. Specifically, the electrical cabinet 10 includes a power module and a control module, and is located in the machine room near the pivot trolley device 3. The power supply unit 11 includes a cable chain 11.1 and an underwater-specific anti-twist cable 11.2. The underwater-specific anti-twist cable 11.2 is laid from the electrical cabinet 10 via the cable chain 11.1 to the gate body 1 and then to various power-consuming parts of the gate, including a high-precision triaxial inclinometer 12, a water level gauge 13, a hydraulic system 4.3, valves 7.2, and a water pump 7.3, thereby providing power and transmitting signals to the self-floating gate when the water level changes. The power supply device 11 adopts a drag chain 11.1 structure at the water-land interface. It is installed in the reserved installation space between the back of the rotating trolley device 3 and the hydraulic structure in the guide channel. The fixed end of the drag chain 11.1 is fixed to the top of the gate pier, and the movable end is connected to the rotating trolley device 3. The underwater special anti-torsion cable 11.2 is laid in an orderly manner and constrained in the chain link channel of the drag chain 11.1, and is laid to the gate body 1 of the gate through the rotating trolley device 3. The cable has a reserved redundant length at the hinge to adapt to 90° rotation, so as to adapt to the planar rotation and vertical lifting of the gate, and provide a continuous, reliable and safe power supply and signal transmission for the self-floating gate.

[0075] When the gate is fully open, it is flexibly connected to the hydraulic structure by several safety ropes 15. The safety ropes 15 can be steel wire ropes or anchor chains, and are always in a free and slack catenary state from the lowest to the highest water level, preventing the gate from accidentally detaching or drifting when stored in the gate tank. Preferably, the safety ropes 15 adopt an anchor chain structure, and their length is 1.1 times the water level change range. When the self-floating gate is stored in the gate tank, the two ends of the safety ropes 15 are respectively hinged to the ear plates 1.14 set on the gate body 1 and the pre-embedded supports 9.2.4 fixed in the concrete of the gate tank. The installation elevation of the pre-embedded supports 9.2.4 is the elevation corresponding to the ear plates 1.14 of the self-floating gate when the water level change range is at its midpoint.

[0076] The present invention also provides a control method for the above-mentioned self-floating gate system, specifically including:

[0077] S10. When opening the self-floating gate, start the water pump 7.3 of the filling and draining device 7 to drain the water from each independent water tank of the gate body 1. Under the guidance of the pivot trolley device 3, the guide device 4, and the support slider 6, the gate body 1 gradually floats up to the no-load draft level.

[0078] Specifically, preferably, before opening the gate, the conventional flood discharge gate 16 is first activated to significantly reduce the water level difference between the upstream and downstream of the self-floating gate, until the slope of the water surface in the gate chamber is less than 1‰, tending to the natural water level relationship in the gateless state; once the water level difference meets the requirements, the self-floating gate is ready to float and open. Then, the valve 7.2 of the inlet pipe of the regulating water tank 1.3 is closed, and the water pump 7.3 of the filling and draining device 7 is started to drain water in sequence, discharging the water in the regulating water tank 1.3, the side water tank 1.2 and the central water tank 1.1; as the water level in each tank drops, the self-floating gate gradually floats to the unloaded draft level under the combined guidance and support of the pivot trolley device 3, the guide device 4 and the support slider 6.

[0079] S20. Retract all the rollers of the guide device;

[0080] Specifically, the hydraulic system 4.3 drives the push-pull mechanism 4.2 to fully retract the roller 4.1 (e.g., Figure 6 (as shown by the dashed line), at this time the self-floating gate is ready to be rotated and opened.

[0081] S30. Using the tug 14 to push the gate body 1, the gate body 1 rotates around the hinge trolley device 3 and is positioned inside the gate. Apply the pushing force on the river side to compress the elastic wheel assembly 8.1. Extend all the rollers 4.1 of the guide device 4 and remove the pushing force.

[0082] Specifically, the tugboat 14 is used to push the gate body 1 at an appropriate speed, causing it to rotate 90° around the center of the ball hinge mechanism 3.3 until it is in place inside the gate housing. A pushing force is applied on the river side to compress the elastic wheel assembly 8.1 of the elastic wheel mechanism 8.1; then the rollers 4.1 of the guide device 4 are fully extended (e.g., Figure 7 As shown), the tugboat 14 removes its thrust, and the vibration damping system 8 remains in a pre-compressed state, thereby suppressing the gate vibration caused by waves.

[0083] To further enhance safety, safety rope 15 is connected to the ear plate 1.14 of gate body 1. Safety rope 15 remains a free and slack catenary throughout the water level range, preventing gate body 1 from being swept downstream by the water flow if it accidentally detaches from the gate housing, thus providing safety protection. At this time, the gate is in a fully open storage state, floating on the water surface due to its own buoyancy. Under the combined constraints of the hinge trolley device 3, the guide device 4, and the vibration damping system 8, it automatically rises and falls vertically along the guide groove embedded part 9.3 in the gate housing as the water level changes.

[0084] S40. When closing the self-floating gate, the towing wheel 14 applies a pushing force to the gate body 1, so that the elastic wheel assembly 8.1 is compressed to the pre-tightened state again, and then the roller 4.1 of the guide device 4 is fully retracted.

[0085] Specifically, before applying a pushing force to the door body 1 using the tow wheel 14, the connection between the safety rope 15 and the ear plate 1.14 is first released.

[0086] S50. Using the tow wheel 14 to pull the gate body 1 to rotate in the opposite direction around the hinge trolley device 3, so that the gate body 1 is in place in the gate chamber and the roller 4.1 of the guide device 4 is fully extended; the gate is then ready to sink and close.

[0087] S60. Water is filled into each independent water tank of the gate body 1. Under the joint constraint of the hinge trolley device 3, the guide device 4, and the support slider 6, the gate body 1 gradually sinks to the first bottom threshold 9.1.1.

[0088] Specifically, valve 7.2 is activated sequentially to the central water tank 1.1, side water tank 1.2, and regulating water tank 1.3 of gate body 1. Gate body 1 gradually sinks under the constraints of the hinge trolley device 3, guide device 4, and support slider 6 until the bottom sill is in place. After being in place, regulating water tank 1.3 is connected to the upstream to maintain the water level inside regulating water tank 1.3 at the same level as the upstream water level. The first side water stop 5.1, the second side water stop 5.2, and the bottom water stop 5.3 of the water-stopping device 5 are pressed against the corresponding parts of the gate chamber embedded part 9.1 to achieve sealing. The first side slider 6.1 is precisely matched with the first main rail 9.1.2, the second side slider 6.2 is precisely matched with the second main rail 9.1.3, and the discretely arranged lower slider 6.3 is precisely matched with the side sill 9.1.4.

[0089] When the conventional flood discharge gate 16 is operated to open and close, water begins to be stored upstream. The gate body 1 transmits water pressure to the hydraulic structure through the support slider 6 and the gate chamber embedded part 9.1. The lateral deformation of the self-floating gate caused by temperature changes is compensated by the preload spring mechanism 2.2 of the telescopic device 2 to avoid overloading of the pivot trolley device 3. At this point, the gate is restored to the fully closed water-blocking state.

[0090] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A self-floating gate system, characterized in that, include: The gate body includes multiple independent water tanks and counterweights set at the bottom of the independent water tanks. Support sliders are provided at the bottom and both sides of the downstream surface of the gate body. A hinge trolley device is located at the first end of the door body and is connected to the door body through a telescopic device. The telescopic device includes a lifting head, a preload spring, and a sleeve base connected in sequence. The lifting head is hinged to the ball joint mechanism of the hinge trolley device, and the sleeve base is fixedly connected to the door body. The guide device, fixedly installed at the second end of the door, includes rollers and a push-pull mechanism, through which the rollers are extended or retracted; Embedded component structures include gate chamber embedded components, guide channel embedded components, and gate storage embedded components; The gate chamber embedded component is installed in the fully closed position of the gate and includes a first bottom sill, a first main rail and a second main rail, a side sill and a first guide rail. The first bottom sill is located at the bottom of the gate body in the fully closed position and cooperates with the bottom of the gate body. The side sill is located downstream of the first bottom sill. The first main rail and the second main rail are located at both ends of the gate body in the fully closed position and are symmetrically arranged. The gate body can move up and down along the first main rail and the second main rail. The rail surface of the first guide rail faces the downstream side and cooperates with the roller of the guide device. The guide groove embedded component cooperates with the rotating trolley device to provide support and guidance for the rotating trolley device. The gate chamber embedded component includes a second bottom sill and a second guide rail. The second bottom sill is located at the bottom of the gate body in the fully open position and cooperates with the gate body. The rail surface of the second guide rail faces away from the flow channel and cooperates with the roller of the guide device. The electrical control system includes an electrical cabinet and a power supply unit. The electrical cabinet includes a power module and a control module. The electrical control system supplies power to the self-floating gate system and controls the floating and sinking of the gate.

2. The self-floating gate system according to claim 1, characterized in that, The preload spring is a bidirectional disc spring preload piston structure, which is placed inside the sleeve base. The lifting head slides axially inside the sleeve base through the preload spring, generating axial displacement to adapt to the width direction deformation caused by the maximum temperature difference, so that the axial load is less than the rated bearing capacity of the hinge trolley device when the door body is deformed to its maximum extent.

3. The self-floating gate system according to claim 1, characterized in that, The hinged trolley device includes a main body, a main traveling wheel set and a side traveling wheel set set on the main body, and the guide groove embedded part includes two pairs of guide groove main rails and guide groove reverse rails that work together. The main traveling wheel set and the side traveling wheel set are located in the guide groove formed by the guide groove main rails and the guide groove reverse rails.

4. The self-floating gate system according to claim 1, characterized in that, There are multiple side sills, which are discretely distributed on the downstream side of the first bottom sill, with the rail surface of the side sills facing the upstream side.

5. The self-floating gate system according to claim 1, characterized in that, It also includes a vibration damping system installed on the end of the door near the guide device, including an elastic wheel assembly and a limiting slider. The elastic wheel assembly includes a roller seat, a roller, and an elastic buffer disposed between the roller seat and the door. The door frame also includes a third guide rail for constraining the elastic wheel assembly and the limiting slider.

6. The self-floating gate system according to claim 1, characterized in that, The power supply device includes a cable chain and an underwater-specific anti-torsion cable. The underwater-specific anti-torsion cable is led out from the electrical cabinet and reaches the door body via the cable chain. The underwater-specific anti-torsion cable has a reserved redundant length at the hinge to accommodate 90° rotation.

7. The self-floating gate system according to claim 1, characterized in that, Rubber water-stopping devices are provided on both sides and bottom of the gate. When the gate is fully closed and sinks into place, the water-stopping devices contact the embedded structure and are pre-pressed to form a seal.

8. The self-floating gate system according to claim 1, characterized in that, The supporting slider includes multiple first-side sliders, multiple second-side sliders, and multiple bottom sliders. When the gate is fully closed and the water is being filled, drained, or submerged, the first-side sliders and the second-side sliders cooperate with the first main rail and the second main rail, respectively.

9. The self-floating gate system according to claim 1, characterized in that, The door's filling and draining device includes a filling pipe, a draining pipe, valves connected to the filling pipe and the draining pipe, and a water pump.

10. A control method for a self-floating gate system according to any one of claims 1-9, comprising: When the self-floating gate is opened, the water pump of the filling and draining device is started to drain the water from each independent water tank of the gate. Under the guidance of the hinge trolley device, the guide device and the support slider, the gate gradually floats up to the no-load draft level. Retract all the rollers of the guide device; The gate is pushed by a tugboat, causing it to rotate around the hinge trolley and into place inside the gate housing. A pushing force is applied to the river side to compress the elastic wheel assembly. The rollers of the guide device are then fully extended, and the pushing force is removed. When closing the self-floating gate, the tugboat applies a pushing force to the gate body, causing the elastic wheel assembly to be compressed to the pre-tightened state again, and then the rollers of the guide device are fully retracted. The gate body is rotated in the opposite direction around the hinge trolley by using a tug wheel to pull the gate body into the fully closed position, and the rollers of the guide device are fully extended. Water is filled into each independent water tank of the gate, and the gate gradually sinks to the first sill under the combined constraints of the hinge trolley device, the guide device, and the support slider.

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