Lifting water gate structure
By introducing a double-layer telescopic interception mechanism and a bottom interception mechanism into the lifting gate, the problem of gates being unable to block impurities in small and medium-sized water conservancy projects is solved, achieving efficient water flow filtration and silt removal, and ensuring the normal operation of the gate and the regulation of water flow parameters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- RAILWAY NO 5 BUREAU GRP FIRST ENG CO LTD
- Filing Date
- 2026-01-22
- Publication Date
- 2026-04-28
AI Technical Summary
In small and medium-sized water conservancy projects, lifting gates cannot effectively block impurities carried in the water flow and are easily affected by silt at the bottom of the river, leading to obstruction of closure or damage to the control system.
It adopts a double-layer telescopic interception mechanism, a translation mechanism and a bottom interception mechanism. The gate is driven to move by a screw lifting mechanism. Combined with the sealing mud-collecting assembly and the filter assembly, it realizes the tilting and lifting of silt and the filtration of impurities, adjusts water flow parameters, and seals the gap through the bottom interception mechanism to prevent impurities from being lost.
It effectively filters impurities in the water flow, prevents silt from affecting gate operation, improves flow rate and accurately adjusts water flow parameters, ensures normal gate operation and prevents impurity loss.
Smart Images

Figure CN121575715B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of water conservancy equipment technology, and more specifically, to a lifting water conservancy gate structure. Background Technology
[0002] Gates are an important component of hydraulic structures. As control facilities, they are used to close and open water discharge channels. They have the functions of intercepting water flow, regulating water level, controlling flow rate, and discharging sediment and floating objects. They are usually composed of three parts: the gate leaf body, the embedded components, and the opening and closing equipment.
[0003] Currently, most water gates in small and medium-sized water conservancy projects adopt lifting gate mechanisms. This type of gate structure is simple and easy to control, but it cannot block impurities carried in the water flow, and it is easily affected by silt at the bottom of the river when closing, which may lead to obstruction of gate closure, damage to the control system, or failure to cut off the river flow. Summary of the Invention
[0004] The purpose of this invention is to provide a lifting hydraulic gate structure in order to solve the above-mentioned problems.
[0005] This invention provides a lifting hydraulic gate structure, comprising:
[0006] An embedded frame, comprising a vertical frame and a horizontal frame vertically connected to the bottom of the vertical frame, wherein a gate is slidably installed on the vertical frame;
[0007] A screw lifting mechanism is fixedly installed on a vertical frame, and the screw lifting mechanism is used to drive the gate to move along the vertical frame;
[0008] A double-layer telescopic interception mechanism includes a sealing mud-bearing component and a filter component slidably connected to the sealing mud-bearing component. One end of the sealing mud-bearing component is movably connected to one side of the gate near the bottom. When the bottom of the gate contacts the bottom of the vertical frame, both the sealing mud-bearing component and the filter component are in a horizontal state and the sealing mud-bearing component covers the filter component.
[0009] A translation mechanism is installed on a horizontal frame, and one end of the filter assembly is movably connected to the translation mechanism. The translation mechanism is used to drive one end of the filter assembly to move toward or away from the vertical frame.
[0010] A power mechanism is mounted on a vertical frame, and the output end of the power mechanism is connected to the input end of the translation mechanism.
[0011] As a further optimization of the present invention, the screw lifting mechanism includes a drive assembly fixedly installed on a vertical frame and a screw lifting assembly connected between the drive assembly and the gate. The drive assembly is used to drive the gate to move up or down along the vertical frame through the screw lifting assembly.
[0012] As a further optimization of the present invention, the drive assembly includes several mounting housings fixedly connected to a vertical frame, a worm gear and a worm wheel movably connected inside the mounting housings, a motor fixedly connected to one of the mounting housings, and a linkage shaft movably connected between two adjacent mounting housings. The two ends of the linkage shaft are respectively fixedly connected to the corresponding worm gears. The worm wheel, located inside the same mounting housing, is configured to cooperate with the worm gear, and the axial direction of the worm wheel is perpendicular to the gate. The output shaft end of the motor is fixedly connected to the corresponding worm gear.
[0013] As a further optimization of the present invention, the screw lifting assembly includes a plurality of drive nuts, a screw threadedly connected to the drive nuts, and a fixed connecting seat fixedly connected to one end of the screw thread. The plurality of fixed connecting seats are all fixedly connected to the gate, and the plurality of drive nuts are respectively fixedly connected to the corresponding worm gears.
[0014] As a further optimization of the present invention, the sealing mud-bearing assembly includes a sealing mud-bearing plate, a hinge member connected to one end of the sealing mud-bearing plate, a vertical pocket plate fixedly connected to the upper surface of the sealing mud-bearing plate near the other end, and a plurality of T-shaped sliding grooves provided on the lower surface of the sealing mud-bearing plate. The other end of the hinge member is connected to a side of the gate near the bottom.
[0015] As a further optimization of the present invention, the filter assembly includes a filter plate, a second hinge connected to one end of the filter plate, and a plurality of T-shaped slide rails connected to the upper surface of the filter plate. The other end of the second hinge is connected to a translation mechanism, and the T-shaped slide rails are configured to cooperate with T-shaped slide grooves.
[0016] As a further optimization of the present invention, the translation mechanism includes a sliding plate, two C-shaped sliders symmetrically connected to both ends of the sliding plate, a lead screw 2 movably connected inside the horizontal frame, and a bevel gear 1 fixedly connected to one end of the lead screw 2. The lead screw 2 is threadedly connected to the C-shaped sliders, and the C-shaped sliders are slidably connected to the horizontal frame.
[0017] As a further optimization of the present invention, the power mechanism includes a second motor fixedly connected to the vertical frame, a transmission shaft movably connected inside the vertical frame, and a second bevel gear fixedly connected to one end of the transmission shaft. The second bevel gear meshes with the first bevel gear, and the output shaft end of the second motor is fixedly connected to the transmission shaft.
[0018] As a further optimization of the present invention, a bottom interception mechanism is also included. The bottom interception mechanism includes a torsion spring rotating shaft movably connected inside the horizontal frame, a sealing thin plate connected to the torsion spring rotating shaft, and two limiting pressure plates symmetrically connected to the inner wall of the horizontal frame. The gap between the limiting pressure plate and the upper inner wall of the horizontal frame is the same as the thickness of the sealing thin plate. The limiting pressure plate is configured to cooperate with a C-shaped slider.
[0019] As a further optimization of the present invention, the horizontal frame is provided with an inclined groove, which is located at the position where the horizontal frame contacts the sealing plate.
[0020] The beneficial effects of this invention are as follows: By setting up a double-layer telescopic interception mechanism, a translation mechanism, and a bottom interception mechanism, this invention can tilt and lift the silt deposited in a set area on the side of the gate during the gate opening process, making it convenient to directly remove the silt from the river channel. At the same time, the translation mechanism can adjust the cleaning angle and flow area of the filter component in the double-layer telescopic interception mechanism to precisely adjust the water flow parameters and filter impurities in the water flow. In addition, it can cooperate with the gate to lower and drive the sealing mud-bearing component in the double-layer telescopic interception mechanism to clean and cut the debris on the filter component to ensure the water flow rate. The bottom interception mechanism seals the gap between the translation mechanism and the pre-embedded frame, which can effectively prevent the filtered impurities or silt from flowing away from the gap. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0022] Figure 2 This is a view showing the gate and the double-layer telescopic interception mechanism of the present invention in combination;
[0023] Figure 3 This is a view showing the interaction between the power mechanism and the translation mechanism of the present invention;
[0024] Figure 4 This is a view showing the cooperation between the double-layer telescopic interception mechanism and the pre-embedded frame of the present invention;
[0025] Figure 5 This is the invention Figure 4 A partial sectional view in the document;
[0026] Figure 6 This is a view showing the interaction of the filter plate, translation mechanism, and bottom interception mechanism of the present invention.
[0027] Figure 7 This is the invention Figure 5 An enlarged view of point A in the image;
[0028] Figure 8 This is the invention Figure 5An enlarged view of point B in the image;
[0029] Figure 9 This is the invention Figure 6 A magnified view of point C in the image.
[0030] In the diagram: 1. Embedded frame; 101. Vertical frame; 102. Horizontal frame; 103. Inclined groove; 2. Gate; 3. Screw lifting mechanism; 301. Mounting housing; 302. Linkage shaft; 303. Motor 1; 304. Screw 1; 305. Fixed connecting seat; 4. Double-layer telescopic interception mechanism; 401. Sealing mud-bearing plate; 402. Vertical pocket plate; 403. Hinge 1; 404. Filter plate; 405. T-shaped slide rail; 406. Hinge 2; 5. Translation mechanism; 501. Slide plate; 502. C-shaped slider; 503. Screw 2; 504. Bevel gear 1; 6. Power mechanism; 601. Motor 2; 602. Transmission shaft; 603. Bevel gear 2; 7. Bottom interception mechanism; 701. Torsion spring rotating shaft; 702. Sealing thin plate; 703. Limiting pressure plate. Detailed Implementation
[0031] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed merely to enable those skilled in the art to better understand and implement the subject matter described herein. Furthermore, features described in some examples may be combined in other examples.
[0032] like Figures 1 to 9 As shown, a lifting hydraulic gate structure includes:
[0033] The pre-embedded frame 1 includes a vertical frame 101 and a horizontal frame 102 vertically connected to the bottom of the vertical frame 101. A gate 2 is slidably installed on the vertical frame 101.
[0034] A screw lifting mechanism 3 is fixedly installed on the vertical frame 101, and the screw lifting mechanism 3 is used to drive the gate 2 to move along the vertical frame 101;
[0035] The double-layer telescopic interception mechanism 4 includes a sealing mud-bearing component and a filter component slidably connected to the sealing mud-bearing component. One end of the sealing mud-bearing component is movably connected to one side of the gate 2 near the bottom. When the bottom of the gate 2 contacts the bottom of the vertical frame 101, both the sealing mud-bearing component and the filter component are in a horizontal state and the sealing mud-bearing component covers the filter component.
[0036] The translation mechanism 5 is installed on the horizontal frame 102. One end of the filter assembly is movably connected to the translation mechanism 5. The translation mechanism 5 is used to drive one end of the filter assembly to move toward or away from the vertical frame 101.
[0037] The power mechanism 6 is mounted on the vertical frame 101, and the output end of the power mechanism 6 is connected to the input end of the translation mechanism 5.
[0038] It should be noted that the vertical frame 101 and the horizontal frame 102 are pre-embedded at the gate of the water conservancy channel. When the gate 2 is opened, the screw lifting mechanism 3 drives the gate 2 to move upward along the vertical frame 101 to a set height. During this process, one end of the sealing mud-collecting component moves upward synchronously with the gate 2. At this time, the sealing mud-collecting component and the filter component begin to tilt synchronously. As the height of the gate 2 gradually increases, the sealing mud-collecting component no longer completely covers the filter component. At this time, water can flow through the tilted filter component. In order to adjust the water flow and adapt to the moving height of the gate 2, the power mechanism 6 drives the translation mechanism 5 to move one end of the filter component toward the vertical frame 101, thereby adjusting the tilt angle of the filter component and the area covered by the sealing mud-collecting component. This allows for fine-tuning of the filter component. The water flow rate and volume can be adjusted with higher precision, and the water flow is filtered at the same time, which can effectively filter out some debris in the water flow that exceeds the preset diameter. When the filter component is covered by a lot of debris, the filter component can be moved by the translation mechanism 5 and / or the gate 2 can be moved down, so that the sealing mud-collecting component can push away or cut the debris on the filter component, thus effectively ensuring the flow at the filter component. The silt initially attached to the sealing mud-collecting component can move with the sealing mud-collecting component. After it is removed from the water body as the sealing mud-collecting component moves upward, it can be easily cleaned by the staff. Moreover, the sealing mud-collecting component has a structure to prevent sludge from slipping. At the same time, in the subsequent cleaning process of the filter component, the anti-slip structure on the sealing mud-collecting component can also play the role of retrieval of debris.
[0039] In an optional embodiment of the invention, such as Figure 1 and Figure 2 As shown, the screw lifting mechanism 3 includes a drive assembly fixedly installed on the vertical frame 101 and a screw lifting assembly connected between the drive assembly and the gate 2. The drive assembly is used to drive the gate 2 to move up or down along the vertical frame 101 through the screw lifting assembly.
[0040] The drive assembly includes several mounting housings 301 fixedly connected to the vertical frame 101, a worm gear and a worm wheel movably connected inside the mounting housing 301, a motor 303 fixedly connected to one of the mounting housings 301, and a linkage shaft 302 movably connected between two adjacent mounting housings 301. The two ends of the linkage shaft 302 are fixedly connected to the corresponding worm gears. The worm wheel, located inside the same mounting housing 301, is configured to cooperate with the worm gear, and the axial direction of the worm wheel is perpendicular to the gate 2. The output shaft end of the motor 303 is fixedly connected to the corresponding worm gear.
[0041] The screw lifting assembly includes several drive nuts, a screw 304 threadedly connected to the drive nuts, and a fixed connecting seat 305 fixedly connected to one end of the screw 304. Several fixed connecting seats 305 are fixedly connected to the gate 2, and several drive nuts are fixedly connected to the corresponding worm gears.
[0042] It should be noted that, as mentioned above, when the gate 2 is driven to move up or down along the vertical frame 101 by the screw lifting mechanism 3, one of the worm gears is driven to rotate by the motor 303. Since the multiple worm gears are interconnected by the linkage shaft 302, when one worm gear rotates, all the worm gears can be driven to rotate synchronously. When the worm gear rotates, it can drive the worm wheel meshing with it to rotate. The drive nut fixedly connected to the worm wheel can rotate synchronously with the worm wheel. After the drive nut rotates, it can drive the screw 304 threadedly connected to it to move up or down, thereby driving the fixed connecting seat 305 and the gate 2 fixedly connected to the fixed connecting seat 305 to move up or down synchronously. This process is programmed and controlled by an external control system.
[0043] In an optional embodiment of the invention, such as Figures 3 to 9 As shown, the sealing mud-bearing assembly includes a sealing mud-bearing plate 401, a hinge 403 connected to one end of the sealing mud-bearing plate 401, a vertical pocket plate 402 fixedly connected to the upper end of the sealing mud-bearing plate 401 near the other end, and a plurality of T-shaped sliding grooves provided on the lower end of the sealing mud-bearing plate 401. The other end of the hinge 403 is connected to a side of the gate 2 near the bottom.
[0044] The filter assembly includes a filter plate 404, a second hinge 406 connected to one end of the filter plate 404, and several T-shaped slide rails 405 connected to the upper surface of the filter plate 404. The other end of the second hinge 406 is connected to the translation mechanism 5. The T-shaped slide rails 405 are configured to cooperate with the T-shaped slide grooves.
[0045] It should be noted that, as mentioned above, when the gate 2 moves upward, one end of the sealing mud-bearing plate 401 moves upward synchronously with the gate 2 through the hinge 403 that is hinged to it, thereby causing one end of the sealing mud-bearing plate 401 to begin to rise. This process can drive the filter plate 404 that is slidably connected to it to tilt synchronously. As the gate 2 continues to move upward, the coverage area of the sealing mud-bearing plate 401 on the filter plate 404 gradually decreases as the tilt angle changes. Water can begin to flow through the filter plate 404 and filter the impurities in the water. Since the filter plate 404 and the sealing mud-bearing plate 401 are connected by a T-shaped slide rail 405, their impact resistance can be effectively guaranteed. The vertical baffle 402 can effectively block the silt in the area between the vertical baffle 402 and the sealing mud-bearing plate 401. At the same time, during the subsequent cleaning of the filter plate 404, impurities in the water can be retrieved, making it convenient for staff to clean.
[0046] In an optional embodiment of the invention, such as Figures 3 to 9 As shown, the translation mechanism 5 includes a slide plate 501, two C-shaped sliders 502 symmetrically connected to both ends of the slide plate 501, a lead screw 503 movably connected inside the horizontal frame 102, and a bevel gear 504 fixedly connected to one end of the lead screw 503. The lead screw 503 is threadedly connected to the C-shaped sliders 502, and the C-shaped sliders 502 are slidably connected to the horizontal frame 102.
[0047] The power mechanism 6 includes a second motor 601 fixedly connected to the vertical frame 101, a transmission shaft 602 movably connected inside the vertical frame 101, and a second bevel gear 603 fixedly connected to one end of the transmission shaft 602. The second bevel gear 603 meshes with a first bevel gear 504, and the output shaft end of the second motor 601 is fixedly connected to the transmission shaft 602.
[0048] It should be noted that, as mentioned above, in order to adjust the tilt angle of the filter plate 404, the area covered by the sealing mud-collecting plate 401, and the cleaning of debris on the filter plate 404 by the sealing mud-collecting plate 401, the adjustment is made by the translation mechanism 5. When the translation mechanism 5 is working, it is driven by the power mechanism 6 of the external control system. Specifically, the motor 601 drives the transmission shaft 602 to drive the bevel gear 603 to rotate. When the bevel gear 603 rotates, it drives the bevel gear 504 meshing with it to rotate synchronously. When the bevel gear 504 rotates, it can drive the C-shaped slider 502 threadedly connected to it to move along the horizontal frame 102 toward or away from the vertical frame 101.
[0049] In an optional embodiment of the invention, such as Figures 5 to 9As shown, it also includes a bottom interception mechanism 7, which includes a torsion spring type rotating shaft 701 movably connected inside the horizontal frame 102, a sealing thin plate 702 connected to the torsion spring type rotating shaft 701, and two limiting pressure plates 703 symmetrically connected to the inner wall of the horizontal frame 102. The gap between the limiting pressure plate 703 and the upper inner wall of the horizontal frame 102 is the same as the thickness of the sealing thin plate 702. The limiting pressure plate 703 is configured to cooperate with the C-shaped slider 502.
[0050] It should be noted that, as mentioned above, although the slide plate 501 contacts the bottom of the riverbed, a certain gap still exists to reduce wear and friction. To prevent silt and impurities from entering the horizontal frame 102 and / or flowing away or clogging through the gap at the bottom of the slide plate 501, the sealing plate 702, which is fixedly connected to the slide plate 501, can extend along with the movement of the slide plate 501 during its movement. As the sealing plate 702 detaches from the torsion spring rotating shaft 701, the torsion spring rotating shaft 701 will rotate and store energy. When the slide plate 501 moves back, the sealing plate 702 can be rewound synchronously. Winded around the torsion spring rotating shaft 701, the sealing plate 702 extends as it moves with the slide plate 501 and the C-shaped slider 502, and enters the gap between the limiting pressure plate 703 and the top inner wall of the horizontal frame 102. This effectively limits and compresses both sides of the sealing plate 702, allowing it to seal the gap between the slide plate 501, the C-shaped slider 502, and the horizontal frame 102. This effectively blocks silt and impurities from entering the horizontal frame 102 and affecting structural components such as the lead screw 503 and the torsion spring rotating shaft 701.
[0051] In an optional embodiment of the invention, such as Figure 9 As shown, the horizontal frame 102 is provided with a sloping groove 103, which is located at the position where the horizontal frame 102 contacts the sealing plate 702.
[0052] It should be noted that, as mentioned above, when the sealing plate 702 is reset, its surface will be in close contact with the horizontal frame 102. The horizontal frame 102 can scrape off the silt and impurities attached to the surface of the sealing plate 702. The scraped-off silt and impurities will be removed from the sealing plate 702 along the inclined surface of the inclined groove 103 to prevent accumulation. This can effectively ensure the reset stability of the sealing plate 702 and the sliding plate 501.
[0053] The above description of this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.
Claims
1. A lifting hydraulic gate structure, characterized in that, include: The pre-embedded frame (1) includes a vertical frame (101) and a horizontal frame (102) vertically connected to the bottom of the vertical frame (101). A gate (2) is slidably installed on the vertical frame (101). A screw lifting mechanism (3) is fixedly installed on the vertical frame (101), and the screw lifting mechanism (3) is used to drive the gate (2) to move along the vertical frame (101); The double-layer telescopic interception mechanism (4) includes a sealing mud-bearing component and a filter component slidably connected to the sealing mud-bearing component. One end of the sealing mud-bearing component is movably connected to one side of the gate (2) near the bottom. When the bottom of the gate (2) contacts the bottom of the vertical frame (101), both the sealing mud-bearing component and the filter component are in a horizontal state and the sealing mud-bearing component covers the filter component. The translation mechanism (5) is mounted on the horizontal frame (102), and one end of the filter assembly is movably connected to the translation mechanism (5). The translation mechanism (5) is used to drive one end of the filter assembly to move toward or away from the vertical frame (101). The power mechanism (6) is mounted on the vertical frame (101), and the output end of the power mechanism (6) is connected to the input end of the translation mechanism (5); The sealing mud-bearing assembly includes a sealing mud-bearing plate (401), a hinge member (403) connected to one end of the sealing mud-bearing plate (401), a vertical pocket plate (402) fixedly connected to the upper end face of the sealing mud-bearing plate (401) near the other end, and a plurality of T-shaped grooves provided on the lower end face of the sealing mud-bearing plate (401). The other end of the hinge member (403) is connected to a side of the gate (2) near the bottom. The filter assembly includes a filter plate (404), a second hinge (406) connected to one end of the filter plate (404), and a plurality of T-shaped slide rails (405) connected to the upper surface of the filter plate (404). The other end of the second hinge (406) is connected to the translation mechanism (5). The T-shaped slide rails (405) are configured to cooperate with the T-shaped slide grooves. The translation mechanism (5) includes a slide plate (501), two C-shaped sliders (502) symmetrically connected to both ends of the slide plate (501), a lead screw (503) movably connected inside the horizontal frame (102), and a bevel gear (504) fixedly connected to one end of the lead screw (503). The lead screw (503) is threadedly connected to the C-shaped sliders (502), and the C-shaped sliders (502) are slidably connected to the horizontal frame (102).
2. The lifting hydraulic gate structure according to claim 1, characterized in that, The screw lifting mechanism (3) includes a drive assembly fixedly installed on the vertical frame (101) and a screw lifting assembly connected between the drive assembly and the gate (2). The drive assembly is used to drive the gate (2) to move up or down along the vertical frame (101) through the screw lifting assembly.
3. The lifting hydraulic gate structure according to claim 2, characterized in that, The drive assembly includes several mounting housings (301) fixedly connected to the vertical frame (101), a worm gear and a worm wheel movably connected inside the mounting housing (301), a motor (303) fixedly connected to one of the mounting housings (301), and a linkage shaft (302) movably connected between two adjacent mounting housings (301). The two ends of the linkage shaft (302) are fixedly connected to the corresponding worm gears, and the worm wheel located inside the same mounting housing (301) is configured to cooperate with the worm gear, with the axial direction of the worm wheel perpendicular to the gate (2). The output shaft end of the motor (303) is fixedly connected to the corresponding worm gear.
4. The lifting hydraulic gate structure according to claim 3, characterized in that, The screw lifting assembly includes several drive nuts, a screw rod (304) threadedly connected to the drive nuts, and a fixed connecting seat (305) fixedly connected to one end of the screw rod (304). Several fixed connecting seats (305) are fixedly connected to the gate (2), and several drive nuts are fixedly connected to the corresponding worm gears.
5. A lifting hydraulic gate structure according to claim 4, characterized in that, The power mechanism (6) includes a second motor (601) fixedly connected to the vertical frame (101), a transmission shaft (602) movably connected inside the vertical frame (101), and a second bevel gear (603) fixedly connected to one end of the transmission shaft (602). The second bevel gear (603) meshes with the first bevel gear (504), and the output shaft end of the second motor (601) is fixedly connected to the transmission shaft (602).
6. The lifting hydraulic gate structure according to claim 5, characterized in that, It also includes a bottom interception mechanism (7), which includes a torsion spring rotating shaft (701) movably connected inside the horizontal frame (102), a sealing thin plate (702) connected to the torsion spring rotating shaft (701), and two limiting pressure plates (703) symmetrically connected to the inner wall of the horizontal frame (102). The gap between the limiting pressure plate (703) and the upper inner wall of the horizontal frame (102) is the same as the thickness of the sealing thin plate (702). The limiting pressure plate (703) is configured to cooperate with a C-shaped slider (502).
7. A lifting hydraulic gate structure according to claim 6, characterized in that, The horizontal frame (102) is provided with a sloping groove (103), which is located at the position where the horizontal frame (102) contacts the sealing plate (702).
Citation Information
Patent Citations
Floodgate having foreign body screening function
KR101019659B1
Safety device that can prevent damage to screen and water gate using fixing pin and water gates including the same
KR102198358B1