Earthquake-resistant gate

Abstract

The application discloses an anti-seismic gate for a hydropower station gate, which comprises a gate plate, a guide rail structure and an adjusting box. A monitoring vibration sensor is arranged on the gate plate, and the guide rail structure is fixed to the upper end of the gate plate. The adjusting box is fixed to the guide rail structure and moves back and forth on the gate plate through the guide rail structure, and the adjusting box is internally provided with a filler. When the vibration frequency of the gate plate reaches a preset value, the adjusting box is moved to reduce the vibration of the gate plate. The gate of the application can monitor the frequency of the gate plate in real time through the vibration sensor, trigger the movement of the adjusting box to dynamically adjust the mass distribution, accurately avoid the resonance frequency band, and significantly improve the anti-seismic efficiency and avoid structural fatigue damage through the replaceable design of the filler in combination with damping energy consumption and frequency self-adaptation.

Description

Technical Field

[0001] This application relates to the field of hydropower station gate technology, and more specifically, to a seismic-resistant gate. Background Technology

[0002] In southern regions, hydropower station gates are frequently affected by typhoons and heavy rainfall during the summer. The impact of water flow and the periodic external loads brought by typhoons can easily trigger resonance in the gate structure. Traditional steel gates suffer from structural fatigue, deformation, and even failure due to the coupling of their natural frequency with the frequencies of water flow pulsations and wind loads, threatening the safe operation of hydropower stations. Existing technologies often adjust the natural frequency by increasing structural stiffness or using mass blocks, but these methods suffer from insufficient adjustment precision, cumbersome structures, and high maintenance costs. Some passive damping devices are susceptible to water corrosion, affecting their stability. Especially under multi-frequency, wide-spectrum loads, traditional vibration damping measures are ineffective in suppressing resonance effects, leading to frequent problems such as decreased gate sealing and jamming of the opening and closing mechanism. Therefore, there is an urgent need to develop a new type of earthquake-resistant gate structure. Utility Model Content

[0003] This application provides a seismic-resistant gate for use in hydropower stations. The gate includes a gate panel, a guide rail structure, and an adjusting box. A vibration sensor is installed on the gate panel for monitoring, and the guide rail structure is fixed to the upper end of the gate panel. The adjusting box is fixed to the guide rail structure and moves back and forth on the gate panel via the guide rail structure. The adjusting box contains filler material. When the vibration frequency of the gate panel reaches a preset value, the adjusting box is moved to reduce the vibration of the gate panel.

[0004] In some embodiments, the guide rail structure includes a guide rail and a slide block, the slide block having a groove, the slide block being fitted onto the outer periphery of the guide rail through the groove, and the adjustment box being mounted on the slide block.

[0005] In some embodiments, the inner side of the slide groove and the outer side of the guide rail are provided with mutually cooperating protrusions and grooves, and the slide block is held on the guide rail by the protrusions and the grooves.

[0006] In some embodiments, a rack is provided on the guide rail, and a gear and a motor for driving the gear to rotate are provided on the slide. The rack and the gear cooperate to enable the slide to move on the guide rail.

[0007] In some embodiments, the slide block has a mounting groove that communicates with the slide groove, the rack is located in the slide groove, two parallel and spaced mounting plates are provided in the mounting groove, the gear is located between the two mounting plates, and the rack and the gear abut against each other in the mounting groove.

[0008] In some embodiments, the adjustment box is fixedly connected to the slide by screws, the upper edge of the slide protrudes to form an extension, the extension has multiple screw holes, and the screws pass through the screw holes to fix it to the bottom of the adjustment box.

[0009] In some embodiments, the regulating box is provided with a horizontal partition that divides the inner cavity of the regulating box into an upper cavity and a lower cavity.

[0010] In some embodiments, both the upper cavity and the lower cavity are provided with an inlet and an outlet, which are located on two opposite sides.

[0011] In some embodiments, the upper opening of the regulating box is provided with a cover plate for the solar cell.

[0012] The gate of this application monitors the frequency of the gate panel in real time through a vibration sensor, triggering the movement of the regulating box to dynamically adjust the mass distribution and accurately avoid the resonance frequency band; the replaceable filling material design, combined with damping energy dissipation and frequency self-adaptation, significantly improves seismic efficiency and avoids structural fatigue damage.

[0013] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0016] Figure 2 This is an exploded structural diagram of the guide rail structure and the adjustment box according to the embodiments of this application;

[0017] Figure 3 This is a cross-sectional structural diagram of the regulating box according to an embodiment of this application.

[0018] Explanation of main component symbols: gate 100, gate plate 10, vibration sensor 11, guide rail structure 20, guide rail 21, rack 211, slide block 22, slide groove 221, gear 222, mounting groove 223, mounting plate 224, extension 225, screw hole 226, motor 227, protrusion 23, groove 24, regulating box 30, partition 31, upper cavity 32, lower cavity 33, water inlet 34, water outlet 35, cover plate 36. Detailed Implementation

[0019] The embodiments of this application will be further described below with reference to the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions throughout.

[0020] Furthermore, the embodiments of this application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting this application.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] Please see Figure 1 and Figure 2 This application discloses a seismic-resistant gate 100 for use in a hydropower station. The gate 100 includes a gate panel 10, a guide rail structure 20, and an adjusting box 30. A vibration sensor 11 is installed on the gate panel 10 for monitoring. The guide rail structure 20 is fixed to the upper end of the gate panel 10. The adjusting box 30 is fixed to the guide rail structure 20 and moves back and forth on the gate panel 10 via the guide rail structure 20. The adjusting box 30 contains filler material. When the vibration frequency of the gate panel 10 reaches a preset value, the adjusting box 30 is moved to reduce the vibration of the gate panel 10.

[0023] The gate 100 of this application monitors the frequency of the gate panel 10 in real time through the vibration sensor 11, triggering the adjustment box 30 to move to dynamically adjust the mass distribution and accurately avoid the resonance frequency band; the replaceable filling material design, combined with damping energy dissipation and frequency self-adaptation, significantly improves seismic efficiency and avoids structural fatigue damage.

[0024] Specifically, please refer to Figure 1 and Figure 2 The door panel 10 is formed by welding a pressure-resistant steel plate with a grid-shaped reinforcing rib on the back to improve bending stiffness. The reinforcing ribs are evenly distributed in a 3×3 grid, and the rib height is 1.5 times the thickness of the door panel 10, effectively suppressing panel buckling deformation. One side of the door panel 10 is hinged to the door pier (not shown), and a self-lubricating copper-based bearing is installed at the hinge to reduce opening and closing friction resistance.

[0025] Vibration sensors 11 are welded or bolted to the four corners of the gate panel 10 to monitor the vibration frequency of the gate panel 10 in real time. The vibration sensors 11 are piezoelectric sensors, laser sensors, or other sensors capable of monitoring vibration. During the daily operation of the gate 100, the sensors continuously record the vibration frequency, amplitude, and time-domain waveform, focusing on low-frequency vibrations in the range of 3-15Hz (commonly caused by water flow excitation). When the detected spectral peak exceeds the threshold, a three-level early warning mechanism is triggered: Level 1 early warning (80% threshold) initiates the pre-displacement of the regulating box 30; Level 2 early warning (100% threshold) initiates emergency braking; and Level 3 early warning (120% threshold) coordinates with the upstream flood discharge gate 100 for coordinated control.

[0026] The guide rail structure 20 is located at the upper end of the door panel 10. The guide rail structure 20 includes a guide rail 21 and a slide block 22. The bottom end of the guide rail 21 is fixed to the upper end of the door panel 10 by welding bolts or other means. The guide rail 21 has an anodized surface treatment, a tensile strength ≥310MPa, and is adaptable to temperature differences from -20℃ to 60℃. A groove 221 is formed in the middle of the lower surface of the slide block 22, extending along the length of the slide block 22 and passing through both sides. The inner wall of the groove 221 is fitted with a wear-resistant ultra-high molecular weight polyethylene (UHMWPE) bushing with a friction coefficient ≤0.15 and a lifespan of up to 100,000 sliding cycles. The slide block 22 is fitted onto the outer periphery of the guide rail 21 via the groove 221, and the adjustment box 30 is mounted on the slide block 22. The separate structure of the guide rail 21 and the slide block 22 ensures smooth movement of the adjustment box 30, while the groove 221 limits lateral offset, improving the positioning accuracy and reliability of the anti-vibration adjustment.

[0027] The inner side of the slide groove 221 and the outer side of the guide rail 21 are provided with mutually cooperating protrusions 23 and grooves 24. The slide block 22 is held onto the guide rail 21 by the protrusions 23 and grooves 24. The protrusions 23 and grooves 24 adopt a dovetail fit design. The mechanical interlocking of the protrusions 23 and grooves 24 strengthens the connection rigidity between the slide block 22 and the guide rail 21, prevents slippage or vibration detachment, and improves structural safety under extreme loads. The concave-convex fit structure can absorb some impact energy, disperse local stress in the guide rail 21, reduce metal fatigue cracks, and extend the service life of the guide rail 21.

[0028] A rack 211 is mounted on the guide rail 21, and a gear 222 and a motor 227 that drives the gear 222 are mounted on the slide 22. The rack 211 and gear 222 cooperate to move the slide 22 on the guide rail 21. Specifically, a mounting groove 223 is formed on the upper surface of the slide 22, which is connected to the slide groove 221. The rack 211 is located in the slide groove 221. Two L-shaped parallel steel plates are fixed in the mounting groove 223 by welding or bolts as mounting plates 224. The two mounting plates 224 are located on both sides of the slide groove 221, and the gear 222 is fixed between the two plates by bearings. The motor is fixed on one of the mounting plates 224, located on the side opposite to the gear 222. The surfaces of the rack 211 and gear 222 are coated to enhance corrosion resistance and adapt to humid environments. The gear 222 and rack 211 transmission combined with the motor 227 drive achieves high-precision displacement control with fast response speed. Closed-loop control can reduce manual intervention, thereby improving seismic resistance efficiency.

[0029] Please combine Figure 2 and Figure 3 The adjusting box 30 is fixedly connected to the slide block 22 by screws. The upper edge of the slide block 22 protrudes to form an extension 225. The extension 225 has multiple screw holes 226, through which screws pass to fix the adjusting box 30 to the bottom. The screw fixing and the design of the extension 225 simplify the disassembly and assembly process of the adjusting box 30. The extension 225 acts as a stress buffer, distributing the load at the screw connection, reducing the risk of thread fatigue fracture, and improving the stability of the connection.

[0030] A horizontal partition 31 is installed inside the regulating box 30, dividing the inner cavity of the regulating box 30 into an upper cavity 32 and a lower cavity 33. Both the upper cavity 32 and the lower cavity 33 are equipped with inlets 34 and outlets 35 for placing or discharging fillers, which can be water, gravel, metal particles, viscous fluids, etc. The inlets 34 and outlets 35 are located on opposite sides. The inlet 34 is located at the upper corner of one side, and the outlet 35 is located at the lower corner of the other side, with the inlets 34 and outlets 35 diagonally arranged. Layered filling can synchronously dissipate energy for broadband vibrations, and combined with mass adjustment and viscous damping, significantly improves seismic resistance under complex loads. The partition 31 separates the upper and lower cavities 33, supporting differentiated filling (such as gravel in the upper cavity 32 and viscous fluid in the lower cavity 33), achieving multimodal vibration suppression.

[0031] The upper opening of the regulating box 30 is equipped with a solar panel cover 36. Solar power eliminates dependence on external power sources, making it suitable for sluice gates in remote areas. The top of the box is equipped with a solar panel 36, and an internal energy storage battery ensures continuous power supply during cloudy and rainy weather.

[0032] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0034] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A seismic-resistant gate, characterized in that, include: A door panel, wherein a vibration sensor for monitoring is installed on the door panel; A guide rail structure, wherein the guide rail structure is fixed to the upper end of the door panel; An adjustment box is fixed on the guide rail structure and moves back and forth on the door panel via the guide rail structure. The adjustment box contains filler material. When the vibration frequency of the door panel is detected to reach a preset value, the adjustment box is moved to reduce the vibration of the door panel.

2. The gate according to claim 1, characterized in that, The guide rail structure includes a guide rail and a slide block. The slide block has a sliding groove and is fitted onto the outer periphery of the guide rail through the sliding groove. The adjustment box is mounted on the slide block.

3. The gate according to claim 2, characterized in that, The inner side of the slide groove and the outer side of the guide rail are provided with mutually cooperating protrusions and grooves, and the slide block is held on the guide rail by the protrusions and grooves.

4. The gate according to claim 2, characterized in that, A rack is provided on the guide rail, and a gear and a motor that drives the gear to rotate are provided on the slide. The rack and the gear cooperate to enable the slide to move on the guide rail.

5. The gate according to claim 4, characterized in that, The slide block has an installation groove, which is connected to the slide groove. The rack is located in the slide groove, and two parallel and spaced installation plates are provided in the installation groove. The gear is located between the two installation plates, and the rack and the gear abut against each other in the installation groove.

6. The gate according to claim 2, characterized in that, The adjustment box is fixedly connected to the slide by screws. The upper edge of the slide protrudes to form an extension. The extension has multiple screw holes, and the screws pass through the screw holes to fix it to the bottom of the adjustment box.

7. The gate according to claim 1, characterized in that, The regulating box is equipped with a horizontal partition, which divides the inner cavity of the regulating box into an upper cavity and a lower cavity.

8. The gate according to claim 7, characterized in that, Both the upper cavity and the lower cavity are provided with water inlets and water outlets, which are located on two opposite sides.

9. The gate according to claim 1, characterized in that, The upper opening of the regulating box is equipped with a cover plate for the solar cells.

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