Gate device in overhaul state of water lock and opening and closing method thereof

Abstract

The present application belongs to the technical field of gate opening and closing device, and particularly relates to a gate device in the state of water gate maintenance and an opening and closing method thereof, which comprises the following steps: step one: moving a portal crane to a position opposite to the gate on the top of a traffic bridge, and hanging a hook on the portal crane and a boom on the gate together; step two: starting an air pump to inflate an auxiliary lifting device connected with the gate, so as to provide upward buoyancy for the gate; and step three: starting the portal crane to realize the opening and closing operation of the gate in cooperation with the buoyancy of the auxiliary lifting device. The present application adds an air bag on the gate, inflates the air bag with the air pump when opening the gate, and uses the buoyancy generated by the air bag to overcome a part of the gravity of the gate, thereby reducing the load of the portal crane and avoiding the damage of the portal crane to the overall structure of the traffic bridge.

Description

Technical Field

[0001] This invention belongs to the technical field of gate opening and closing devices, and particularly relates to a gate device and its opening and closing method during sluice gate maintenance. Background Technology

[0002] In water conservancy projects, sluice gates are widely used as structures for impounding, releasing, or drawing water. Closing the gates allows for flood control, tide control, and water storage to raise upstream water levels, meeting upstream water intake or navigation needs. Opening the gates allows for flood discharge, drainage, sediment flushing, water intake, or flow regulation according to downstream water demand. Gates need to be opened and closed frequently according to tidal changes and water level fluctuations. Generally, hydraulic hoists are used to operate the gates, which are integrated with traffic bridges, normally serving as passageways for citizens and vehicles. However, with increasing service life, when the sluice gate reaches its operational limit or malfunctions, major repairs or replacements are required. Since these repairs or replacements are lengthy and require gate operation to regulate water levels, additional power is often used to open and close the gates when the hydraulic cylinders are disassembled for repair or replacement, or when the hydraulic electrical system is disassembled and replaced. A truck crane can be used to lift the gate from the traffic bridge, but this obstructs traffic. Therefore, a gantry crane is typically considered if traffic is not impeded. However, when using a gantry crane to open and close the sluice gate, the crane's travel track must utilize the edge of the traffic bridge, and the resulting large compressive stress load can damage the overall structure of the bridge. Therefore, it is necessary to invent a gate device and its opening and closing method for sluice gate maintenance to solve these problems. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a gate device and its opening and closing method for use during sluice gate maintenance, thereby resolving the issues raised in the background section.

[0004] A method for opening and closing a gate device during sluice gate maintenance includes the following steps:

[0005] Step 1: Move the gantry crane to the top of the traffic bridge, opposite the gate, and connect the hook on the gantry crane to the boom on the gate;

[0006] Step 2: Start the air pump to inflate the airbag in the auxiliary lifting device connected to the gate, thereby providing upward buoyancy to the gate;

[0007] Step 3: Start the gantry crane, which, together with the airbag of the auxiliary lifting device, uses the buoyancy of the gate to achieve the opening and closing operation of the gate.

[0008] The primary function of a common type of sluice gate is to regulate water levels. It requires frequent opening and closing of the gates according to tidal fluctuations and water level changes. These gates are driven by hydraulic actuators and are integrated with traffic bridges, serving the purpose of allowing pedestrians and vehicles to pass. When the sluice gate reaches the end of its service life or experiences equipment failure, it requires major repairs or replacement. These repairs or replacements are lengthy processes, and the gates still need to be opened and closed to regulate the water level during these procedures. When the hydraulic cylinders are removed for repair or replacement, or when the hydraulic and electrical systems are dismantled or replaced, additional power is often used to open and close the gates. A truck crane could be used to lift the gate from the traffic bridge, but this would obstruct traffic. Adding a gantry crane would be considered without obstructing traffic. However, since the gantry crane's travel track would rely on the edge of the traffic bridge, it cannot withstand such large compressive stress loads, which would damage the overall structure of the traffic bridge. To reduce the lifting load of the gantry crane, this solution involves adding an airbag below the gate. When the gate is opened, the airbag inflates, using buoyancy to overcome part of the gate's weight, thus reducing the load on the gantry crane and the compressive stress on the edge of the traffic bridge. Simultaneously, the gantry crane partially lifts the gate. This method not only satisfies the maneuverability of opening and closing the gate during maintenance but also avoids traffic restrictions and structural damage to the traffic bridge. The opening and closing method in this invention refers to using a "gantry crane combined with an airbag" to open and close the gate when the hydraulic gate opener is being repaired, such as when the cylinder is removed. The buoyancy of the airbag reduces the load on the gate, allowing for a smaller tonnage and size of the gantry crane, thereby reducing the pressure on the traffic bridge and preventing damage to the bridge deck and structure.

[0009] For example, in one embodiment, the present invention also provides a gate device in the maintenance state of a sluice gate. The gate device includes an arc-shaped gate plate. Connecting frames are symmetrically fixedly connected to the front and rear sides of the gate plate. A fixed shaft is vertically fixedly connected between two connecting frames. A fixed block is rotatably connected to the fixed shaft. The fixed block is fixedly connected to the riverbed. A hydraulic cylinder is inclinedly arranged between the gate plate and the bottom of the traffic bridge. The two ends of the hydraulic cylinder are respectively hinged to the bottom of the gate plate and the bottom of the traffic bridge. Two piers are symmetrically arranged on both sides of the gate plate. The two piers on the side of the gate plate away from the hydraulic cylinder have an arc-shaped design on the side closer to the gate plate, and the arc surfaces of the two piers fit together with the arc surface of the gate plate.

[0010] Furthermore, the auxiliary lifting device includes an L-shaped buckle plate, which is fixedly connected to the side of the gate away from the hydraulic cylinder. The front and rear sides of the buckle plate are close to the corresponding two bridge piers, and the vertically downward part of the buckle plate forms a storage groove with the gate plate. An airbag is provided in the storage groove. A connecting pipe is provided at the top of the airbag. The connecting pipe is vertically inserted into the top of the buckle plate. An air inlet pipe is connected to the top of the connecting pipe. An air pump is connected to the top of the air inlet pipe. The air pump is installed at the bottom of the traffic bridge. A base plate is provided at the bottom of the airbag. The length and width of the base plate match the length and inner width of the buckle plate, respectively. Limiting rods are vertically fixedly connected to the top of the base plate near the four corners. The limiting rods are slidably inserted into the top of the buckle plate.

[0011] Furthermore, the bottom of the base plate is provided with an arc-shaped movable plate that matches the length and width of the base plate. Fixed plates are provided on both the front and rear sides of the arc-shaped movable plate. The fixed plates are vertically fixedly connected to the bottom of the base plate. Positioning rods are vertically fixedly connected to both the front and rear sides of the arc-shaped movable plate. An arc-shaped positioning hole is provided through the fixed plate at the position corresponding to the positioning rod, and the positioning rod is inserted into the positioning hole. A guide groove is provided on the pier corresponding to the positioning rod, and the free end of the positioning rod is inserted into the guide groove. The guide groove includes a vertical section and an inclined end at the top of the vertical section, with the top of the inclined section inclined towards the gate plate. First guide rods are provided at the top and bottom of the arc-shaped movable plate. The two ends of the first guide rods are vertically rotatably connected to the two fixed plates respectively. A groove is provided on the bottom of the gate plate near the buckle plate. The groove is open on the side near the buckle plate. A second guide rod is provided in the groove, and the two ends of the second guide rod are rotatably connected to the inner walls of the front and rear sides of the groove respectively.

[0012] Furthermore, the buckle plate has multiple vertical connecting holes through it on the side away from the gate, and the length of the connecting holes is equal to the maximum expansion and contraction of the airbag. A connecting post is vertically inserted into the connecting hole, and the connecting post is fixedly connected to the base plate. The ends of the multiple connecting posts away from the base plate are fixedly connected to the same connecting plate, and the connecting plate is close to the vertical section of the buckle plate.

[0013] Furthermore, a protective plate is fixedly connected to the buckle plate at the position opposite to the multiple connecting holes. The protective plate is hollow, and a movable groove is opened on the side of the protective plate connected to the buckle plate. The thickness of the protective plate gradually decreases from top to bottom.

[0014] Furthermore, triangular reinforcing plates are provided on both the front and rear sides of the buckle, and the reinforcing plates are fixedly connected at the junction of the horizontal and vertical sections of the buckle.

[0015] Furthermore, the length and curvature of the positioning hole are the same as the width and curvature of the arc-shaped movable plate, and the projection length of the positioning hole along the vertical direction is also equal to the projection length of the inclined section of the guide groove along the vertical direction.

[0016] Furthermore, the top and bottom of the arc-shaped movable plate can always be in close contact with the two first guide rods, and when the base plate moves downward to the maximum distance, the top of the arc-shaped movable plate can be in close contact with the bottom of the second guide rod.

[0017] The technical effects and advantages of this invention are as follows:

[0018] 1. The present invention adds an airbag to the gate plate. When the gate is opened, air is pumped into the airbag by an air pump. The buoyancy generated by the airbag overcomes part of the weight of the gate, thereby reducing the load on the gantry crane and avoiding damage to the overall structure of the traffic bridge by the gantry crane.

[0019] 2. This invention features an arc-shaped movable plate. During the upward movement of the gate, the arc-shaped movable plate gradually extends to the bottom of the base plate with the cooperation of the guide groove and the positioning rod. When the water flow impacts the arc-shaped movable plate, the water flow generates an upward thrust on the arc-shaped movable plate. This, combined with the buoyancy of the airbag and the pulling force of the gantry crane on the gate, allows the gate to move upward more easily. Thus, while realizing the opening and closing of the gate, it reduces the load of the gantry crane on the traffic bridge and protects the traffic bridge structure from damage.

[0020] 3. The present invention incorporates a protective plate. When water flows onto the inclined surface of the protective plate, the water flow generates an upward thrust through the inclined surface of the protective plate. This, combined with the buoyancy of the airbag and the pulling force of the gantry crane on the gate, allows the gate to move upward more easily. Thus, while opening and closing the gate, the load of the gantry crane on the traffic bridge is reduced, protecting the traffic bridge structure from damage. Attached Figure Description

[0021] Figure 1 This is a plan view of an embodiment of the present invention.

[0022] Figure 2 This is a first three-dimensional structural schematic diagram of another embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0024] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0025] Figure 5 In this invention Figure 4 Enlarged view of part A;

[0026] Figure 6 This is a first three-dimensional structural schematic diagram of part of the auxiliary lifting device in this invention;

[0027] Figure 7 This is a second three-dimensional structural schematic diagram of part of the auxiliary lifting device in this invention;

[0028] Figure 8 This is a three-dimensional sectional view of the protective plate in this invention;

[0029] Figure 9 This is a three-dimensional structural diagram of some of the gates in this invention;

[0030] In the diagram: 1. Gantry crane; 2. Traffic bridge; 3. Lifting boom; 4. Auxiliary lifting device; 41. Buckle plate; 42. Airbag; 43. Connecting pipe; 44. Air inlet pipe; 45. Air pump; 46. Base plate; 47. Limiting rod; 5. Gate; 6. Connecting frame; 7. Fixed shaft; 8. Fixed block; 9. Hydraulic cylinder; 10. Pier; 11. Arc-shaped movable plate; 12. Fixed plate; 13. Positioning rod; 14. Positioning hole; 15. Guide groove; 16. First guide rod; 17. Second guide rod; 18. Connecting column; 19. Connecting plate; 20. Protective plate; 21. Reinforcing plate; 30. Opening and closing cylinder; 40. Opening and closing gate; 50. Elliptical airbag; 22. Installation platform; 23. Sliding hook lock; 24. Lifting device. Detailed Implementation

[0031] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0032] In the description of this invention, it should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Please see Figure 1 In one embodiment, a gate device for sluice gate maintenance is provided, including a hydraulic cylinder 30, a gate 40 and an elliptical airbag 50. An installation platform 22 is provided above the gate 40, and a sliding hook lock 23 is installed on the installation platform 22. A hoisting device 24 is installed at the lower end of the sliding hook lock 23. The hoisting device 24 is used to hoist the gate 40.

[0035] Please see Figures 2 to 9 In another embodiment, a method for opening and closing a gate device during sluice gate maintenance includes the following steps:

[0036] Step 1: Move the gantry crane 1 to the top of the traffic bridge 2, opposite the gate, and connect the hook on the gantry crane 1 to the boom 3 on the gate;

[0037] Step 2: Start the air pump 45 to inflate the airbag 42 of the auxiliary lifting device 4 connected to the gate, thereby providing upward buoyancy to the gate;

[0038] Step 3: Start the gantry crane 1, so that the airbag 42 of the auxiliary lifting device 4 can use the buoyancy of the gate to realize the opening and closing operation of the gate.

[0039] like Figures 2 to 4 As shown, the gate device includes an arc-shaped gate plate 5. Connecting frames 6 are symmetrically fixedly connected to the front and rear sides of the gate plate 5. A fixed shaft 7 is vertically fixedly connected between the two connecting frames 6. A fixed block 8 is rotatably connected to the fixed shaft 7. The fixed block 8 is fixedly connected to the riverbed. A hydraulic cylinder 9 is inclinedly arranged between the gate plate 5 and the bottom of the traffic bridge 2. The two ends of the hydraulic cylinder 9 are respectively hinged to the bottom of the gate plate 5 and the bottom of the traffic bridge 2. Two piers 10 are symmetrically arranged on both sides of the gate plate 5. The two piers 10 on the side of the gate plate 5 away from the hydraulic cylinder 9 have an arc-shaped design on the side closer to the gate plate 5, and the arc surfaces of the two piers 10 fit together with the arc surface of the gate plate 5.

[0040] When not under maintenance, the gate 5 can be deflected downward or upward around the fixed shaft 7 by extending or shortening the hydraulic cylinder 9, thereby cooperating with the two arc-shaped piers 10 to open or close the gate and adjust the water level.

[0041] like Figures 4 to 7As shown, the auxiliary lifting device 4 includes an L-shaped buckle plate 41, which is fixedly connected to the side of the gate plate 5 away from the hydraulic cylinder 9. The front and rear sides of the buckle plate 41 are close to the corresponding two piers 10, and the vertically downward part of the buckle plate 41 forms a storage groove with the gate plate 5. An airbag 42 is provided in the storage groove. A connecting pipe 43 is provided at the top of the airbag 42. The connecting pipe 43 is vertically inserted into the top of the buckle plate 41. An air inlet pipe 44 is connected to the top of the connecting pipe 43. An air pump 45 is connected and installed at the bottom of the traffic bridge 2. The bottom of the airbag 42 is provided with a base plate 46. The length and width of the base plate 46 are matched with the length and inner width of the buckle plate 41, respectively. Limiting rods 47 are vertically fixedly connected to the top of the base plate 46 near the four corners. The limiting rods 47 are slidably inserted into the top of the buckle plate 41. Triangular reinforcing plates 21 are provided on the front and rear sides of the buckle plate 41. The reinforcing plates 21 are fixedly connected to the junction of the horizontal and vertical sections of the buckle plate 41.

[0042] With the airbag 42 in place, when major repairs or replacements of the sluice gate equipment are required, the hydraulic cylinder 9 is unusable. At this time, the gantry crane 1 is moved to the top of the traffic bridge 2, opposite the gate 5. Then, the hook on the gantry crane 1 is connected to the boom 3 on the gate 5. After the gantry crane 1 and boom 3 are connected, the air pump 45 is started, injecting air into the airbag 42 through the air inlet pipe 44 and connecting pipe 43. As air is continuously injected, the airbag 42 gradually inflates, and the base plate 46 gradually moves under the action of the airbag 42. During the downward movement, due to the presence of the limiting rod 47, the base plate 46 can move downward along a fixed path under the restriction of the limiting rod 47. The presence of the base plate 46 can ensure that the airbag 42 maintains a uniform expansion effect, thereby ensuring that the airbag 42 can generate a uniform buoyancy on the gate plate 5 through the buckle plate 41, and thus cooperate with the gantry crane 1 to smoothly realize the opening and closing of the gate. At the same time, the buoyancy generated by the airbag 42 can balance part of the weight of the gate plate 5, thereby reducing the load of the gantry crane 1 on the traffic bridge 2 and protecting the overall structure of the traffic bridge 2 from damage.

[0043] Furthermore, due to the presence of the buckle plate 41, when the airbag 42 is in the contracted state, the base plate 46 can cooperate with the buckle plate 41 and the gate 5 to protect the airbag 42 inside the buckle plate 41, thereby preventing the airbag 42 from being punctured by sharp objects in the water.

[0044] like Figures 4 to 7As shown, the bottom of the base plate 46 is provided with an arc-shaped movable plate 11 that matches the length and width of the base plate 46. Fixed plates 12 are provided on both the front and rear sides of the arc-shaped movable plate 11. The fixed plates 12 are vertically fixedly connected to the bottom of the base plate 46. Positioning rods 13 are vertically fixedly connected to both the front and rear sides of the arc-shaped movable plate 11. An arc-shaped positioning hole 14 is provided through the fixed plate 12 at the corresponding position of the positioning rod 13, and the positioning rod 13 is inserted through the positioning hole 14. A guide groove 15 is provided on the pier 10 corresponding to the positioning rod 13, and the free end of the positioning rod 13 is inserted into the guide groove 15. The guide groove 15 includes a vertical section and an inclined end at the top of the vertical section, and the top of the inclined section is inclined towards the gate plate 5. The top and bottom of the arc-shaped movable plate 11 are provided with first... The guide rod 16 has two ends that are rotatably connected to the two fixed plates 12. The bottom of the gate plate 5 is provided with a groove on the side near the buckle plate 41. The side of the groove near the buckle plate 41 is open. The groove is provided with a second guide rod 17. The two ends of the second guide rod 17 are rotatably connected to the front and rear inner walls of the groove. The length and curvature of the positioning hole 14 are the same as the width and curvature of the arc-shaped movable plate 11. The projection length of the positioning hole 14 in the vertical direction is also equal to the projection length of the inclined section of the guide groove 15 in the vertical direction. The top and bottom of the arc-shaped movable plate 11 can always be in close contact with the two first guide rods 16. When the bottom plate 46 moves downward to the maximum distance, the top of the arc-shaped movable plate 11 can be in close contact with the bottom of the second guide rod 17.

[0045] With the arc-shaped movable plate 11, when the airbag 42 is not inflated, the arc-shaped movable plate 11 and the base plate 46 are together stored inside the buckle plate 41. When the airbag 42 is inflated, as the airbag 42 gradually expands, the airbag 42 can push the base plate 46 and the arc-shaped movable plate 11 to move downward together. During this process, the positioning rod 13 on the arc-shaped movable plate 11 can move downward along the vertical section of the guide groove 15, so that the arc-shaped movable plate 11 is still stored inside the buckle plate 41. When the airbag 42 is fully inflated, the airbag 42 can provide upward buoyancy to the gate 5 through the buckle plate 41, and the side of the arc-shaped movable plate 11 near the gate 5 is opposite to the bottom of the second guide rod 17.

[0046] Subsequently, with the start of the gantry crane 1, the gantry crane 1 can cooperate with the airbag 42 to pull the gate plate 5 with the buoyancy of the gate plate 5, causing it to deflect upward with the fixed shaft 7 as the center. As the gate plate 5 moves upward, the gate plate 5 can drive the buckle plate 41, airbag 42, base plate 46 and arc-shaped movable plate 11 to move downward together. During this process, the positioning rod 13 on the arc-shaped movable plate 11 can first move upward along the vertical section of the guide groove 15. When the positioning rod 13 moves to the inclined section of the guide groove 15, as the gate plate 5 continues to move, the positioning rod 13 can continue to move along the inclined section of the guide groove 15. As the positioning rod 13 moves, the limiting groove can push the arc-shaped movable plate 11 to move closer to the gate plate 5 through the positioning rod 13. During this process, due to the limiting effect of the two first guide rods 16 and the positioning hole 14, the arc-shaped movable plate 11 can gradually move downward, while the second guide rod 17 can press on the top of the arc-shaped movable plate 11.

[0047] When the gate 5 is fully opened, the gate 5 stops moving, and the positioning rod 13 moves along the guide groove 15 to the top position. At this time, the arc-shaped movable plate 11 can be tilted and extended at the bottom of the base plate 46. When the water flow impacts the arc-shaped movable plate 11, the arc-shaped movable plate 11 can maintain the current tilt angle under the action of the second guide rod 17. When the water flow impacts the arc-shaped movable plate 11, since the arc-shaped movable plate 11 is in an inclined state, the water flow can generate an upward tilting force on the arc-shaped movable plate 11. This, combined with the buoyancy of the airbag 42 and the pulling force of the gantry crane 1 on the gate 5, allows the gate 5 to move upward more easily. Thus, while realizing the opening and closing of the gate, the load of the gantry crane 1 on the traffic bridge 2 is reduced, and the structure of the traffic bridge 2 is protected from damage.

[0048] like Figure 7 As shown, the buckle plate 41 has multiple vertical connecting holes through the side away from the gate plate 5, and the length of the connecting holes is equal to the maximum extension of the airbag 42. A connecting post 18 is vertically inserted into the connecting hole, and the connecting post 18 is fixedly connected to the base plate 46. The ends of the multiple connecting posts 18 away from the base plate 46 are fixedly connected to the same connecting plate 19, and the connecting plate 19 is close to the vertical section of the buckle plate 41.

[0049] With the connecting column 18, during the downward movement of the base plate 46, when the arc-shaped movable plate 11 extends from the bottom of the base plate 46, the arc-shaped movable plate 11 will be pushed by the water flow, thereby pulling the base plate 46 and the airbag 42 towards the gate 5. At this time, the connecting column 18 can cooperate with the connecting plate 19 to restrict the position of the base plate 46, thereby preventing the base plate 46 and the airbag 42 from shifting and protecting the airbag 42 from being damaged.

[0050] like Figures 6 to 8As shown, a protective plate 20 is fixedly connected to the buckle plate 41 at the position opposite to the multiple connecting holes. The protective plate 20 is hollow, and a movable groove is opened on the side of the protective plate 20 connected to the buckle plate 41. The thickness of the protective plate 20 gradually decreases from top to bottom.

[0051] By providing a protective plate 20, during the daily use of the gate 5, the protective plate 20 can shield and protect the connection hole without affecting the movement of the connecting plate 19, thus preventing debris in the water from clogging the connection hole and ensuring the normal movement of the connecting column 18 along the connection hole.

[0052] Furthermore, since the side of the protective plate 20 away from the gate 5 is designed with an incline, when the gate 5 moves upward under the action of the gantry crane 1, the water flow can smoothly pass through the bottom of the gate 5. During this process, when the water flow impacts the incline of the protective plate 20, the water flow can generate an upward thrust through the incline of the protective plate 20. This, combined with the buoyancy of the airbag 42 and the pulling force of the gantry crane 1 on the gate 5, allows the gate 5 to move upward more easily. Thus, while realizing the opening and closing of the gate, the load of the gantry crane 1 on the traffic bridge 2 is reduced, protecting the structure of the traffic bridge 2 from damage.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A gate device for use during sluice gate maintenance, characterized in that: The system includes a gantry crane (1), a traffic bridge (2), a boom (3), a gate device, and an auxiliary lifting device (4). The gate device includes an arc-shaped gate plate (5). Connecting frames (6) are symmetrically fixedly connected to the front and rear sides of the gate plate (5). A fixed shaft (7) is vertically fixedly connected between the two connecting frames (6). A fixed block (8) is rotatably connected to the fixed shaft (7). The fixed block (8) is fixedly connected to the riverbed. A hydraulic cylinder (9) is inclinedly arranged between the gate plate (5) and the bottom of the traffic bridge (2). The two ends of the hydraulic cylinder (9) are respectively hinged to the bottom of the gate plate (5) and the bottom of the traffic bridge (2). Two piers (10) are symmetrically arranged on both sides of the gate plate (5). The two piers (10) on the side of the gate plate (5) away from the hydraulic cylinder (9) have an arc-shaped design on the side close to the gate plate (5). The arc surfaces of the two piers (10) are in contact with the arc surfaces of the gate plate (5). The auxiliary lifting device (4) includes an L-shaped buckle plate (41), which is fixedly connected to the side of the gate plate (5) away from the hydraulic cylinder (9). The front and rear sides of the buckle plate (41) are close to the corresponding two piers (10), and the vertically downward part of the buckle plate (41) forms a storage groove with the gate plate (5). An airbag (42) is provided in the storage groove. A connecting pipe (43) is provided at the top of the airbag (42). The connecting pipe (43) is vertically inserted into the top of the buckle plate (41). The top of the connector (43) is connected to an air inlet pipe (44), and the top of the air inlet pipe (44) is connected to an air pump (45). The air pump (45) is installed at the bottom of the traffic bridge (2). The bottom of the airbag (42) is provided with a base plate (46). The length and width of the base plate (46) are matched with the length and inner width of the buckle plate (41), respectively. The top of the base plate (46) is vertically fixedly connected to the four corners. The limit rod (47) slides through and is inserted into the top of the buckle plate (41). The bottom of the base plate (46) is provided with an arc-shaped movable plate (11) that matches the length and width of the base plate (46). The front and rear sides of the arc-shaped movable plate (11) are provided with fixed plates (12). The fixed plates (12) are vertically fixed to the bottom of the base plate (46). The front and rear sides of the arc-shaped movable plate (11) are vertically fixed with positioning rods (13). The fixed plates (12) at the corresponding positions of the positioning rods (13) are provided with arc-shaped positioning holes (14), and the positioning rods (13) are inserted into the positioning holes (14). The piers (10) corresponding to the positioning rods (13) are provided with guide grooves (15), and the positioning rods (13) are provided with guide grooves (15). The free end of the gate is inserted into the guide groove (15). The guide groove (15) includes a vertical section and an inclined end at the top of the vertical section. The top of the inclined section is inclined towards the gate (5). The top and bottom of the arc-shaped movable plate (11) are provided with a first guide rod (16). The two ends of the first guide rod (16) are respectively vertically rotatably connected to two fixed plates (12). The bottom of the gate (5) is provided with a groove on the side near the buckle plate (41). The side of the groove near the buckle plate (41) is designed to be open. The groove is provided with a second guide rod (17). The two ends of the second guide rod (17) are respectively rotatably connected to the front and rear inner walls of the groove.

2. The gate device under maintenance conditions of a sluice gate according to claim 1, characterized in that: The buckle plate (41) has multiple vertical connecting holes on the side away from the gate plate (5), and the length of the connecting holes is equal to the maximum extension of the airbag (42). A connecting post (18) is vertically inserted into the connecting hole. The connecting post (18) is fixedly connected to the base plate (46). The ends of the multiple connecting posts (18) away from the base plate (46) are fixedly connected to the same connecting plate (19), and the connecting plate (19) is close to the vertical section of the buckle plate (41).

3. The gate device under maintenance conditions of a sluice gate according to claim 2, characterized in that: The buckle plate (41) is fixedly connected to a protective plate (20) at a position opposite to the multiple connecting holes. The protective plate (20) is hollow, and a movable groove is provided on the side where the protective plate (20) is connected to the buckle plate (41). The thickness of the protective plate (20) gradually decreases from top to bottom.

4. The gate device under maintenance conditions of a sluice gate according to claim 3, characterized in that: The front and rear sides of the buckle plate (41) are provided with triangular reinforcing plates (21), and the reinforcing plates (21) are fixedly connected at the junction of the horizontal and vertical sections of the buckle plate (41).

5. The gate device under maintenance conditions of a sluice gate according to claim 4, characterized in that: The length and curvature of the positioning hole (14) are the same as the width and curvature of the arc-shaped movable plate (11), and the projection length of the positioning hole (14) along the vertical direction is also equal to the projection length of the inclined section of the guide groove (15) along the vertical direction.

6. The gate device under maintenance conditions of a sluice gate according to claim 5, characterized in that: The top and bottom of the arc-shaped movable plate (11) can always be in close contact with the two first guide rods (16), and when the bottom plate (46) moves downward to the maximum distance, the top of the arc-shaped movable plate (11) can be in close contact with the bottom of the second guide rod (17).

7. A method for opening and closing a gate device under maintenance conditions as described in claim 6, characterized in that: The opening and closing method includes the following steps: Step 1: Move the gantry crane (1) to the top of the traffic bridge (2) opposite the gate, and hook the hook on the gantry crane (1) together with the boom (3) on the gate; Step 2: Start the air pump (45) to inflate the air bladder (42) of the auxiliary lifting device (4) connected to the gate, thereby providing upward buoyancy to the gate; Step 3: Start the gantry crane (1), so that the airbag (42) of the auxiliary lifting device (4) can use the buoyancy of the gate to realize the opening and closing operation of the gate.

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