Dock gate lower hinged support maintenance device and construction method thereof

Abstract

The invention belongs to the technical field of underwater operation, and relates to a maintenance device for a lower hinged support of a dock gate and a construction method thereof. The device comprises a waterproof cover box, a diving barge, a hoisting system and a drainage assembly, the waterproof cover box comprises a cover body and a channel well, openings are formed in the bottom and the top of the cover body, the bottom face of the cover body is in sealed compression joint with the surrounding structure of the lower hinged support to be maintained, the channel well is connected to the opening in the top of the cover body in a sealed mode, and the top face of the channel well is higher than the water surface. The diving barge is provided with a plurality of hydraulic supporting legs capable of ascending and descending so that the diving barge can be supported in the horizontal door pit. The hoisting system comprises a tower frame and an arm frame which are arranged on the diving barge, and one end of the arm frame is located above the cover body and connected with the cover body in a pressing mode; the drainage assembly comprises a submersible pump and a drainage pipe, the submersible pump is arranged in the cover body, one end of the drainage pipe is connected with the submersible pump, and the other end is led to the water surface through the channel well. According to the method, a stable dry operation environment can be rapidly constructed at the dock gate lower hinged support to be maintained, rapid maintenance is achieved, pollution to a sea area is avoided, and operation safety is improved.

Description

Technical Field

[0001] This invention belongs to the field of underwater operation technology, specifically relating to a maintenance device for a dock gate lower hinge support and its construction method. Background Technology

[0002] Existing shipyards require dry docks to open and close quickly, and most use pneumatic horizontal dock gates (10). Figures 1-4 As shown, a door recess 13 is recessed on the outside of the dock opening. Multiple support blocks 14 are provided in the door recess 13. After the dock gate 10 is opened, it lies down in the door recess 13 and is supported on the multiple support blocks 14. Dock wall blocks 15 are provided on both sides of the dock opening, and a dock sill 16 is provided at the bottom to form a U-shaped water-stopping surface. The upper part of the dock sill 16 facing the dock gate 10 is usually inlaid with a smooth granite stone 17 to achieve a water-stopping seal with the closed dock gate 10. To accommodate the need for the dock gate 10 to lie flat, the concrete structure between the dock sill 16 and the dock gate pit 13 is designed with a stepped cross-section. The upper plane of the stepped cross-section is lower than the facing stone 17, and this plane is called the base surface 18. There are usually two hinge supports 11 supporting the dock gate 10 above the base surface 18. The upper hinge support of the hinge support 11 is fixed to the bottom of the dock gate 10, and the lower hinge support is fixed to the base surface 18. The pit wall on one side of the dock gate pit 13 extends upward at an angle to connect with the outer side of the stepped cross-section. This pit wall is called the first pit wall 131, and the pit wall opposite to the first pit wall 131 is called the second pit wall 132. Because the lower hinge support of the dock gate 10 is constantly submerged in seawater and subjected to the impact of opening and closing the dock gate 10, as the service life reaches the design life or due to improper operation of opening and closing the dock gate 10, the lower hinge support of the dock gate 10 will experience severe corrosion, loose bolts, sheared anchor bolts, or even local concrete damage, which will affect the normal use of the dock gate 10. It is necessary to repair the lower hinge support of the dock gate 10 in a timely and rapid manner.

[0003] Currently, when repairing the lower hinge support of dock gate 10, divers are usually required to dive underwater. However, the use of electric and pneumatic tools is limited underwater, and the welding strength cannot be guaranteed. Therefore, before repair, a temporary cofferdam is usually built around dock gate 10 or a temporary water-tight cofferdam is partially installed to drain the water from the temporary cofferdam, so as to isolate the part to be repaired from the seawater and expose the entire lower hinge support to be repaired. Then, the repair work can be carried out on the lower hinge support in a waterless state. After the work is completed, the temporary cofferdam is removed.

[0004] However, for larger dry docks (such as 300,000-ton class), the dock gate 10 is typically designed to be nearly 100 meters wide and 13 to 15 meters high. If a temporary cofferdam is built around the dock gate 10, the construction cost is high, the operation period is long, it affects the docking period of ships, and it may also cause pollution to the sea area. In addition, the entire dock entrance will be blocked, which will affect the normal operation and efficiency of the shipyard. If a temporary water-tight cofferdam is installed locally, such as the water-tight cofferdam tooling for the dock gate lower winch seat disclosed in patent CN222728226U, the water-tight cofferdam tooling will be affected by wind, waves and currents in actual use, and its own stability is poor. It is difficult to keep the water-tight cofferdam tooling in a water-free state at all times during operation, which affects the safety of operation. Summary of the Invention

[0005] In view of the shortcomings of the related technologies, the present invention provides a maintenance device for the lower hinge support of the dock gate and its construction method to solve the technical problems mentioned in the background art.

[0006] This invention provides a maintenance device for a dock gate lower hinge support, comprising: The watertight enclosure includes a cover body and a channel well; the bottom and top of the cover body have openings, and the bottom surface of the cover body is sealed and pressed against the sill around the lower hinge support to be repaired, the first pit wall of the horizontal portal pit, and the base surface; the channel well is sealed and connected to the top opening of the cover body so that the channel well is connected to the inner cavity of the cover body; the cover body is located below the water surface, and the top surface of the channel well is above the water surface. The diving barge has multiple liftable hydraulic outriggers that support the diving barge within the portal pit. The hoisting system includes a vertically extending tower and a horizontally extending boom connected to the top of the tower; the bottom of the tower is connected to the submersible barge, and one end of the boom is located above the enclosure and pressed against the enclosure; The drainage assembly includes a submersible pump and a drain pipe. The submersible pump is located inside the cavity of the enclosure. One end of the drain pipe is connected to the submersible pump, and the other end is led to the water surface through a channel well.

[0007] In some embodiments, a limiting block is provided on the side of the lower part of the cover facing the outer wall of the facing stone, and the limiting block is pressed against the facing stone of the dock; multiple hydraulic jacks are installed on the diving barge, and the multiple hydraulic jacks are pressed against the outer wall of the cover near the slumber pit and the second pit wall of the slumber pit respectively.

[0008] In some embodiments, the water-tight cover also includes a lifting frame, the lower part of which is connected to the top surface of the cover, and the upper part of which is provided with multiple lifting lugs; multiple hydraulic lifting points are installed on the bottom surface of the boom, and the multiple hydraulic lifting points and multiple lifting lugs are detachably connected one-to-one.

[0009] In some embodiments, each lifting lug is provided with a hydraulic pin to connect a hydraulic lifting point to the lifting lug.

[0010] In some embodiments, the upper part of the hoisting frame is provided with multiple positioning holes, and the bottom surface of the boom is provided with multiple positioning posts that correspond one-to-one with the multiple positioning holes.

[0011] In some embodiments, the cover is a double-layer shell structure, and the bottom of both the inner shell and the outer shell of the cover are provided with a water-stop structure so that the bottom surface of the cover is sealed and pressed against the structure around the lower hinge support to be repaired.

[0012] In some embodiments, the enclosure includes a first enclosure wall and a second enclosure wall disposed opposite to each other; the bottom ends of both the inner and outer shells of the first enclosure wall are sealed and pressed against the first pit wall of the dock; multiple hydraulic jacks on the submersible barge are respectively pressed against the first enclosure wall and the second pit wall of the dock; the bottom end of the inner shell of the second enclosure wall is sealed and pressed against the base surface, and the bottom end of the outer shell of the second enclosure wall is sealed and pressed against the top surface of the dock sill; a limiting block is provided on the side of the inner shell of the second enclosure wall facing the outer wall of the dock sill.

[0013] In some embodiments, a ballast block is sandwiched between the outer shell and the inner shell of the second cover.

[0014] In some embodiments, the manhole faces the base surface, and the manhole and the enclosure are provided with vertically extending ladders.

[0015] The present invention also provides a construction method for the maintenance device for the lower hinge support of the dock gate as described above, comprising the following steps: S1. Construct the cover, channel well, and hoisting frame separately, and then connect them to form a watertight cover box; install the drainage components into the watertight cover box; construct the tower and boom, and install them onto the submersible barge; install multiple hydraulic jacks on the submersible barge. S2. Use a shore crane to lower the watertight enclosure into the water outside the dock for mooring; the submersible barge enters the water and moves toward the watertight enclosure so that the boom is above the lifting frame; water is pumped into the submersible barge to make it submerge; the position of the submersible barge is adjusted so that the multiple positioning posts on the boom are inserted one by one into the multiple positioning holes on the lifting frame; the multiple hydraulic lifting points on the boom extend to connect one by one with the multiple lifting lugs on the lifting frame. S3. The submersible barge moves the watertight cover box to a preset position above the lower hinge support to be repaired, and fills the submersible barge with water again to make it submerge to a preset elevation. At this time, a preset gap is left between the bottom surface of the cover and the surrounding structure of the lower hinge support to be repaired. Multiple hydraulic outriggers on the submersible barge extend to press against the bottom surface of the door pit to support the submersible barge in the door pit and level it. S4. Multiple hydraulic jacks on the submersible barge extend to press against the outer wall of the cover body near the pier and the second pier wall of the pier, respectively, so that the limiting block presses against the surface stone of the dock; multiple hydraulic lifting points on the boom extend again so that the water-stop structure on the bottom of the waterproof cover box seals against the dock wall, the first pier wall of the pier and the base surface around the lower hinge support to be repaired. S5. Start the submersible pump to drain the water from the watertight box to expose the lower hinge support to be repaired, creating a dry working environment; S6. Workers enter the enclosure through the passageway to carry out maintenance work.

[0016] In some embodiments, the submersible barge is equipped with a GNSS receiver for locating the submersible barge as it moves into the water and submerges.

[0017] Based on the above technical solutions, the dock gate lower hinge support maintenance device and its construction method in this embodiment of the invention, through the combined application of a watertight enclosure, a diving barge, and a hoisting system, can quickly enclose the dock gate lower hinge support to be repaired, reducing construction costs and work cycle, and ensuring that the watertight enclosure has good stability, ensuring that the working environment inside the watertight enclosure is always dry during maintenance operations, thus improving operational safety; it also enables the rapid deployment and retrieval of the dock gate lower hinge support maintenance device, thereby achieving rapid maintenance of the dock gate lower hinge support and greatly reducing the impact of maintenance on dock production. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a plan view of the dock; Figure 2 for Figure 1 Enlarged view of the dock entrance; Figure 3 This is an elevation view of the dock after the dock gates are closed. Figure 4 This is an elevation view of the dock after the dock gate is opened. Figure 5 This is an elevation view of the maintenance device for the lower hinge support of the dock gate according to the present invention; Figure 6 for Figure 5 Enlarged view of the cover in the image; Figure 7 This is a top view of the maintenance device for the dock gate lower hinge support of the present invention; Figure 8 This is a front view of the water-tight cover box and drainage components in the dock gate lower hinge support maintenance device of the present invention. Figure 9This is a top view of the water-tight cover box and drainage components in the dock gate lower hinge support maintenance device of the present invention; Figure 10 This is a front view of the hoisting system and the submersible barge in the dock gate lower hinge support maintenance device of the present invention; Figure 11 This is a schematic diagram showing the completed fabrication of the watertight cover box in the construction method of the dock gate lower hinge support maintenance device of the present invention; Figure 12 This is a schematic diagram of the watertight cover box and the submersible barge entering the water in the construction method of the maintenance device for the dock gate lower hinge support of the present invention; Figure 13 This is a schematic diagram showing the underwater barge and the watertight cover box integrated in the construction method of the dock gate lower hinge support maintenance device of the present invention.

[0019] In the diagram: 10. Dock gate; 11. Hinge support; 12. Lower hinge support; 13. Horizontal door pit; 131. First pit wall; 132. Second pit wall; 14. Support pier; 15. Dock wall pier; 16. Dock sill; 17. Facing stone; 18. Base surface; 20. Waterproof cover box; 21. Cover body; 211. First cover wall; 212. Second cover wall; 22. Channel well; 23. Lifting frame; 231. Lifting lug; 232. Positioning hole; 24. Limiting block; 25. Ballast block; 26. Ladder; 27. Water-stop structure; 28. Support frame; 30. Submersible barge; 31. Hydraulic outrigger; 32. Hydraulic jack; 40. Tower; 50. Boom; 51. Hydraulic lifting point; 52. Positioning column; 60. Submersible pump; 70. Drainage pipe. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "top", "bottom", "inner", "outer", "left", "right", "front", "rear", "vertical", "horizontal", 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.

[0022] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] refer to Figures 5-10 As shown, the present invention provides a maintenance device for a dock gate lower hinge support, including a watertight cover box 20, a submersible barge 30, a hoisting system, and a drainage component.

[0025] The watertight enclosure 20 includes a cover body 21 and a channel well 22. The cover body 21 has openings at both the bottom and top. The bottom surface of the cover body 21 is sealed and pressed against the surrounding sill 16, the first pit wall 131 of the lower hinge support 12 to be repaired, and the base surface 18. That is, the shape of the bottom surface of the cover body 21 is designed according to the shape of the surrounding structure of the lower hinge support 12 to be repaired. The bottom surface of the cover body 21 is provided with a water-stopping structure 27, such as a water-stopping strip, to achieve a seal with the surrounding structure of the lower hinge support 12 to be repaired. The channel well 22 is sealed and connected to the top opening of the cover body 21, so that the channel well 22 communicates with the inner cavity of the cover body 21. The cover body 21 is located below the water surface, and the top surface of the channel well 22 is above the water surface. Specifically, the top opening of the cover 21 is smaller than the bottom opening, and the outer dimensions of the passage well 22 are smaller than those of the cover 21. The inner cavity of the cover 21 must provide the working space required for staff to maintain the lower hinge support 12. The inner cavity of the cover 21 is equipped with lighting and other equipment. The passage well 22 must meet the needs of staff to move up and down and the passage of cables and other equipment.

[0026] The diving barge 30 has multiple retractable hydraulic outriggers 31, which support the barge within the portal pit 13. All outriggers 31 can be remotely extended and retracted, and their extension and retraction can be individually adjusted to adapt to the complex and uneven bottom structure of the portal pit 13, thus leveling the diving barge 30. It is understood that the diving barge 30 typically contains multiple ballast tanks and one air tank. The ballast tanks are equipped with water drainage and compressed air pipelines. All piping from the ballast tanks leads to the air tank. The diving barge 30 can be drained or filled with water via remotely controlled electric valves, allowing it to surface or submerge. The diving barge 30 can be moved by cable towing or by electric drive or other methods.

[0027] The lifting system includes a tower 40 and a boom 50. The tower 40 extends vertically and its bottom is connected to the middle of the deck of the diving barge 30. The boom 50 is connected to the top of the tower 40 and extends horizontally. One end of the boom 50 is located above the enclosure 21, and the boom 50 is pressed against the enclosure 21, that is, the boom 50 applies vertical pressure to the enclosure 21 to reliably seal the bottom surface of the enclosure 21 with the structure around the lower hinge support 12 to be repaired. The other end of the boom 50 has an air compressor station and piping system, a hydraulic pump station and piping system, and power supply devices mounted on its top surface.

[0028] The drainage assembly includes a submersible pump 60 and a drain pipe 70. The submersible pump 60 is located in the inner cavity of the cover 21. The position of the submersible pump 60 is lower than the base surface 18 where the lower hinge support 12 is located and close to the junction of the cover 21 and the first pit wall 131. One end of the drain pipe 70 is connected to the submersible pump 60, and the other end is led to the water surface through the channel well 22. The drain pipe 70 can be laid along the inner wall of the cover 21 and the wall of the channel well 22 to reduce space occupation.

[0029] To further explain, when it is necessary to repair the lower hinge support 12 of the dock gate, the submersible barge 30 and the hoisting system are used to quickly place the watertight cover box 20 at the lower hinge support 12 to be repaired, and press and seal the watertight cover box 20 with the surrounding structure of the lower hinge support 12 to be repaired. The submersible pump 60 is started to pump the water in the watertight cover box 20 out through the drain pipe 70, so that the watertight cover box 20 forms a dry working environment. Then, the workers can enter the watertight cover box 20 through the passage well 22 to carry out the repair work on the lower hinge support 12.

[0030] In the above illustrative embodiment, the watertight enclosure 20 only needs to enclose the lower hinge support 12 to be repaired, instead of enclosing the entire dock opening, which reduces construction costs and work cycle, and minimizes the impact on the shipyard. The lifting system applies vertical pressure to the top of the enclosure 21, improving the stability of the watertight enclosure 20 and ensuring a reliable seal between the watertight enclosure 20 and the surrounding structure of the lower hinge support 12 to be repaired. This ensures a dry working environment inside the watertight enclosure 20 during maintenance, improving operational safety. Therefore, the combined application of the submersible barge 30, the lifting system, and the watertight enclosure 20 can quickly create a stable dry working environment at the lower hinge support 12 to be repaired, enabling rapid maintenance.

[0031] refer to Figure 5 , Figure 6 , Figure 8As shown, in some embodiments, a limiting block 24 is provided on the lower part of the cover 21 facing the outer wall of the facing stone 17, and the limiting block 24 is pressed against the facing stone 17 of the dock sill 16; the end of the limiting block 24 may be provided with a water-stopping structure 27 that is pressed against the facing stone 17 of the dock sill 16. Multiple hydraulic jacks 32 are installed on the deck of the diving barge 30. The multiple hydraulic jacks 32 are respectively arranged on the side of the diving barge 30 near the second pit wall 132 of the dock sill 13 and the side near the cover 21. The fixed end of the hydraulic jack 32 is connected to the deck of the diving barge 30, and the telescopic end of the hydraulic jack 32 faces the second pit wall 132 of the dock sill 13 or the cover 21. The multiple hydraulic jacks 32 are respectively pressed against the outer wall of the cover 21 on the side near the dock sill 13 and the second pit wall 132 of the dock sill 13. Specifically, the deck of the diving barge 30 is equipped with four hydraulic jacks 32. The distance between the two hydraulic jacks 32 on the side of the second pit wall 132 near the door pit 13 can be greater than the distance between the two hydraulic jacks 32 on the side of the cover 21. All hydraulic jacks 32 can be remotely controlled to extend and retract and the extension amount can be adjusted individually.

[0032] In the above illustrative embodiment, based on the vertical pressure applied to the top of the cover 21 by the hoisting system, the horizontal pressure is applied to the lower side wall of the cover 21 by the setting of multiple hydraulic jacks 32 on the submersible barge 30. This allows the limiting block 24 to reliably press against the dock sill 16, thereby achieving the horizontal positioning of the watertight cover 20 and forming a stable support system. This further improves the stability of the watertight cover 20, better ensures the reliability of the seal between the watertight cover 20 and the surrounding structure of the lower hinge support 12 to be repaired, and ensures that the watertight cover 20 always maintains a dry working environment without water during maintenance operations, unaffected by wind, waves, or currents, thus further improving operational safety.

[0033] refer to Figures 5-9 As shown, in some embodiments, the waterproof cover box 20 also includes a lifting frame 23, which is a truss structure, with the passageway 22 passing through it. The lower part of the lifting frame 23 is connected to the top surface of the cover 21, and the upper part of the lifting frame 23 is provided with multiple lifting lugs 231. Multiple hydraulic lifting points 51 are installed on the bottom surface of the boom 50, and the multiple hydraulic lifting points 51 are detachably connected to the multiple lifting lugs 231 in a one-to-one correspondence; the hydraulic lifting points 51 are lifting connectors that integrate hydraulic drive and load-bearing functions. Through the matching arrangement of the hydraulic lifting points 51 and the lifting lugs 231, the boom 50 can lift the waterproof cover box 20 via the lifting frame 23, and can also apply vertical pressure to the top of the cover 21 via the lifting frame 23, ensuring a reliable seal between the bottom surface of the cover 21 and the structure surrounding the lower hinge support 12 to be repaired. Furthermore, each lifting lug 231 on the lifting frame 23 is equipped with a hydraulic pin (not shown) to connect the hydraulic lifting point 51 to the lifting lug 231, thereby connecting the watertight jacket to the submersible barge 30 via the lifting system. Both the hydraulic lifting point 51 and the hydraulic pin can be remotely controlled.

[0034] refer to Figures 8-10 As shown, in some embodiments, the upper part of the lifting frame 23 is also provided with multiple positioning holes 232, the number of positioning holes 232 can be three, and they are arranged non-collinearly; the bottom surface of the boom 50 is provided with multiple positioning posts 52 that correspond one-to-one with the multiple positioning holes 232. When the boom 50 is connected to the lifting frame 23, the boom 50 and the lifting frame 23 are first quickly positioned by inserting the positioning posts 52 into the positioning holes 232, and then the hydraulic lifting point 51 extends to the lifting lug 231, and the hydraulic pin extends to connect the hydraulic lifting point 51 to the lifting lug 231, thereby realizing the quick connection between the waterproof cover box 20 and the boom 50.

[0035] refer to Figure 6 , Figure 8 As shown, in some embodiments, the cover 21 has a double-layer shell structure, with a water-stop structure 27 at the bottom of both the inner and outer shells, so that the bottom surface of the cover 21 is sealed and pressed against the structure surrounding the lower hinge support 12 to be repaired. This illustrative embodiment reduces material usage and cost by using a double-layer shell structure for the cover 21, making the waterproof cover 20 lighter; and further improves the sealing performance of the waterproof cover 20 by providing water-stop structures 27 at the bottom of both shells.

[0036] refer to Figure 6 , Figure 8 As shown, in some embodiments, the cover 21 includes a first cover wall 211 and a second cover wall 212 disposed opposite to each other, two side cover walls connected between the two ends of the first cover wall 211 and the second cover wall 212, and a top cover wall connected to the two side cover walls and the top of the first cover wall 211 and the second cover wall 212. The bottom ends of the inner shell and the outer shell of the two side cover walls are sealed and pressed against the dock sill 16, the base surface 18, and the first pit wall 131 of the pier 13. The bottom ends of the inner shell and the outer shell of the first cover wall 211 are sealed and pressed against the first pit wall 131 of the pier 13; a plurality of hydraulic jacks 32 on the submersible barge 30 are respectively pressed against the first cover wall 211 and the second pit wall 132 of the pier 13. The bottom end of the inner shell of the second cover wall 212 is sealed and pressed against the base surface 18, and the bottom end of the outer shell of the second cover wall 212 is sealed and pressed against the top surface of the dock sill 16; the limiting block 24 is provided on the side of the inner shell of the second cover wall 212 facing the outer wall of the surface stone 17 of the dock sill 16.

[0037] refer to Figure 5 , Figure 6 , Figure 8As shown, in some embodiments, a ballast block 25 is sandwiched between the outer shell and the inner shell of the second cover wall 212. Since the height of the second cover wall 212 located on one side of the dock sill 16 is less than the height of the first cover wall 211 located on one side of the door pit 13, the ballast block 25 acts as a counterweight to keep the waterproof cover box 20 horizontal and prevent the waterproof cover box 20 from tilting to one side.

[0038] refer to Figure 5 , Figure 8 As shown, in some embodiments, the passage well 22 is directly opposite the base surface 18, and the passage well 22 and the cover 21 are provided with a vertically extending ladder 26 so that workers can enter and exit the waterproof cover box 20 via the ladder 26.

[0039] refer to Figures 5-13 As shown, the present invention also provides a construction method for the maintenance device for the lower hinge support of the dock gate as described above, comprising the following steps: S1. Construct the cover 21, the passage well 22, and the hoisting frame 23 separately, and then connect them to form a watertight cover box 20; install the drainage components into the watertight cover box 20; place the constructed watertight cover box 20 stably on the dock wall pier 15 near the dock entrance via a bracket 28; construct the tower 40 and the boom 50, and install them on the submersible barge 30; install multiple hydraulic jacks 32 on the submersible barge 30; place an air compressor station and piping system, a hydraulic pump station and piping system, power supply and other devices on the top surface of one end of the boom 50, and debug them to pass the test.

[0040] S2. Using a shore crane, the watertight enclosure 20 is lowered into the water outside the dock for mooring. The watertight enclosure 20 is leveled using ballast blocks 25. The submersible barge 30 is submerged, and its lifting system moves toward the watertight enclosure 20 until the boom 50 is positioned above the lifting frame 23. Water is pumped into the submersible barge 30 to submerge it. The position of the submersible barge 30 is adjusted so that the multiple positioning pins 52 on the boom 50 are inserted one-to-one into the multiple positioning holes 232 on the lifting frame 23 to achieve rapid positioning. The multiple hydraulic lifting points 51 on the boom 50 extend to the corresponding lifting lugs 231, and the hydraulic pins extend to connect the multiple hydraulic lifting points 51 on the boom 50 with the multiple lifting lugs 231 on the lifting frame 23, thereby connecting the watertight enclosure and the submersible barge 30 into one unit.

[0041] S3. The submersible barge 30 moves the watertight cover box 20 to a preset position above the lower hinge support 12 to be repaired. Water is then poured into the submersible barge 30 again to make it submerge to a preset elevation. At this time, a preset gap is left between the bottom surface of the cover 21 and the surrounding structure of the lower hinge support 12 to be repaired. Multiple hydraulic outriggers 31 on the submersible barge extend to press against the bottom surface of the door pit 13 to support the submersible barge 30 in the door pit 13. The submersible barge 30 is leveled by adjusting the extension length of each hydraulic outrigger 31.

[0042] S4. Multiple hydraulic jacks 32 on the submersible barge 30 extend to press against the outer wall of the cover 21 near the entrance pit 13 and the second pit wall 132 of the entrance pit 13, respectively, applying horizontal pressure to the lower side wall of the cover 21, thereby pressing the limiting block 24 on the cover 21 against the face stone 17 of the dock sill 16; multiple hydraulic lifting points 51 on the boom 50 extend again to apply vertical pressure to the top of the cover 21, so that the water-stop structure 27 on the bottom surface of the water-proof cover box 20 is sealed and pressed against the dock sill 16, the first pit wall 131 of the entrance pit 13 and the base surface 18 around the lower hinge support 12 to be repaired; this step quickly and reliably presses the water-stop structure 27 of the water-proof cover box 20 into place and forms a stable support system to ensure the stability of the water-proof cover box 20.

[0043] Furthermore, step S4 can be further subdivided into the following steps: S41. Multiple hydraulic jacks 32 on the diving barge 30 extend to press against the outer wall of the cover 21 on the side near the entrance pit 13 and the second pit wall 132 of the entrance pit 13, so that the limiting block 24 on the cover 21 is initially pressed against the face stone 17 of the dock sill 16, temporarily locking the horizontal position of the waterproof cover box 20. S42, the multiple hydraulic lifting points 51 on the boom 50 extend again so that the bottom surface of the waterproof cover box 20 contacts the structure around the lower hinge support 12 to be repaired. S43, the multiple hydraulic jacks 32 on the diving barge 30 extend again to make the limiting block 24 on the cover 21 press tightly against the face stone 17 of the dock sill 16, and finally lock the horizontal position of the waterproof cover box 20. S44. Multiple hydraulic lifting points 51 on the boom 50 extend again until the water-stop structure 27 on the bottom surface of the water-stop box 20 is tightly pressed against the sill 16, the first pit wall 131 of the lower hinge support 12 to be repaired, and the base surface 18 around the lower hinge support 12 to be repaired, achieving a completely water-stopped state.

[0044] S5. Start the submersible pump 60 to drain the water in the watertight cover 20 to expose the lower hinge support 12 to be repaired, thus creating a dry working environment. During the drainage process, pay attention to whether there is any leakage. After the drainage is completed, check the leakage. If the leakage is large, release the pressure of the hydraulic jack 32 and / or the hydraulic lifting point 51 to lift the watertight cover 20 and repeat the above steps until a dry working environment that meets the leakage requirements is achieved.

[0045] S6. Workers enter the enclosure 21 via ladder 26 in the passageway 22 to carry out maintenance work. Further, after the maintenance work is completed, workers return to shore via ladder 26 and retrieve the maintenance device for the lower hinge support of the dock gate. During retrieval, the hydraulic jacks 32 on the submersible barge 30 are first retracted to prevent them from contacting the dock gate pit 13 and the watertight enclosure 20. Then, the submersible barge 30 dewaters and rises to the surface, and the boom 50 lifts the watertight enclosure 20, mooring it outside the dock entrance. The connection between the boom 50 and the lifting frame 23 of the watertight enclosure 20 is then released. The submersible barge 30, along with its tower 40 and boom 50, moves away from the dock gate pit 13, and a shore crane lifts the watertight enclosure 20 to a designated location on shore for storage. This allows for the rapid retrieval of the maintenance device, facilitating the quick restoration of normal dock operations.

[0046] The above illustrative embodiments enable rapid partial enclosure of the dock gate lower hinge support 12 to be repaired, reducing construction costs and work cycle. They also ensure good stability of the watertight enclosure 20, guaranteeing a dry working environment inside the watertight enclosure 20 during maintenance, thus improving operational safety. Furthermore, they enable the rapid deployment and retrieval of the dock gate lower hinge support maintenance device, thereby achieving rapid maintenance of the dock gate lower hinge support 12 and greatly reducing the impact of maintenance on dock production.

[0047] In some embodiments, the diving barge 30 is equipped with a GNSS receiver, which can obtain location and other information in real time by receiving signals transmitted by GPS or Beidou navigation systems. This information is used to accurately locate the diving barge 30 when it enters the water and moves and dives. Then, by combining the preset relative positional relationship between the diving barge 30, the hoisting system and the watertight cover box 20, the position information of the watertight cover box 20 can be obtained, which makes it easy to accurately place the watertight cover box 20 at the lower hinge support 12 of the dock gate to be repaired.

[0048] Through the description of several embodiments of the dock gate lower hinge support maintenance device and its construction method of the present invention, it can be seen that the present invention has at least one or more of the following advantages: 1) By combining the watertight enclosure 20, the submersible barge 30 and the hoisting system, it is possible to quickly enclose the 12 lower hinge supports of the dock gate to be repaired, reduce construction costs and work cycle, and achieve rapid repair; and make the watertight enclosure 20 have good stability, ensuring that the watertight enclosure 20 always maintains a dry working environment during maintenance operations, improving work safety, and making the construction window period more flexible. 2) In the complete maintenance equipment, the diving barge 30 and the hoisting system are common equipment in shipyards with a high secondary utilization rate. The watertight box 20 is relatively lightweight and does not require the use of large crane vessels, which greatly saves construction costs. Moreover, the construction method of the complete maintenance equipment is safe, efficient and energy-saving and environmentally friendly, and will not cause pollution to the sea area.

[0049] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A hinged caisson lower hinge support repair device, characterized by, The utility model relates to a water-proof cover box which comprises a cover body and a channel well. The bottom and top of the cover body are provided with openings, the bottom surface of the cover body is sealed and pressed against the cofferdam, the first pit wall of the approach pit and the base surface around the lower hinge support to be maintained, the channel well is sealed and connected to the top opening of the cover body to make the channel well communicate with the inner cavity of the cover body, the cover body is located below the water surface, and the top surface of the channel well is higher than the water surface. The diving barge is provided with a plurality of liftable hydraulic legs, and the plurality of hydraulic legs support the diving barge in the approach pit. The hoisting system comprises a vertically extending tower, and an arm frame connected to the top of the tower and horizontally extending; the bottom of the tower is connected to the diving barge, and one end of the arm frame is located above the cover body and is pressed against the cover body. The drainage assembly comprises a diving pump arranged in the inner cavity of the cover body and a drainage pipe connected to the diving pump at one end and leading to the water surface through the channel well. The lower part of the cover body is provided with a limiting block towards one side of the outer wall of the cofferdam surface stone, and the limiting block is pressed against the cofferdam surface stone; a plurality of hydraulic jacks are installed on the diving barge and are pressed against the outer wall near the one side of the cover body and the second pit wall of the approach pit, respectively.

2. The hinged support repair device of claim 1, wherein, The water-proof cover box further comprises a hoisting frame, the lower part of the hoisting frame is connected to the top surface of the cover body, the upper part of the hoisting frame is provided with a plurality of lifting lugs, a plurality of hydraulic lifting points are installed on the bottom surface of the arm frame, and the plurality of hydraulic lifting points are detachably connected to the plurality of lifting lugs one by one.

3. The hinged support repair device of claim 2, wherein, The upper part of the hoisting frame is further provided with a plurality of positioning holes, and the bottom surface of the arm frame is provided with a plurality of positioning columns matched with the plurality of positioning holes one by one.

4. The hinged support repair device of claim 3, wherein, The cover body is a double-layer shell structure, the bottom end of the inner layer shell and the outer shell of the cover body is provided with a water stop structure to make the bottom surface of the cover body be sealed and pressed against the structure around the lower hinge support to be maintained.

5. The hinged support repair device of claim 4, wherein, The cover body comprises oppositely arranged first and second cover walls; the bottom end of the inner layer shell and the outer shell of the first cover wall is sealed and pressed against the first pit wall of the approach pit; the plurality of hydraulic jacks on the diving barge are pressed against the first cover wall and the second pit wall of the approach pit, respectively; the bottom end of the inner layer shell of the second cover wall is sealed and pressed against the base surface, the bottom end of the outer shell of the second cover wall is sealed and pressed against the top surface of the cofferdam, and the limiting block is arranged on one side of the inner layer shell of the second cover wall towards the outer wall of the cofferdam surface stone.

6. The hinged support repair device of claim 5, wherein, The outer shell and the inner layer shell of the second cover wall are clamped with a ballast block.

7. The hinged support repair device of claim 6, wherein, The channel well is opposite to the base surface, and a vertical extending ladder is arranged in the channel well and the cover body.

8. The hinged support repair device of claim 1, wherein, The utility model relates to a water-proof cover box which comprises a cover body and a channel well.

9. The construction method of a hinged support repair device for a caisson gate according to any one of claims 5 to 7, characterized in that, S1, the cover body, the channel well and the hoisting frame are respectively manufactured to be connected to the water-proof cover box; the drainage assembly is installed into the water-proof cover box; the tower and the arm frame are manufactured and installed on the diving barge, and a plurality of hydraulic jacks are installed on the diving barge. ​ S2, the caisson is hoisted into the water outside the dock by a shore crane, the submersible barge is moved to the caisson, the arm frame is above the hoisting frame, the submersible barge is filled with water to submerge, the position of the submersible barge is adjusted so that the plurality of positioning columns on the arm frame are inserted into the plurality of positioning holes on the hoisting frame one by one, and the plurality of hydraulic lifting points on the arm frame are extended to be connected to the plurality of lifting lugs on the hoisting frame one by one; S3, the submersible barge moves the caisson to a predetermined position above the lower hinge support to be repaired, the submersible barge is filled with water again to submerge to a predetermined elevation, at this time, the bottom surface of the caisson and the structure around the lower hinge support to be repaired leave a predetermined gap; the plurality of hydraulic legs on the submersible barge are extended to be in pressure connection with the bottom surface of the horizontal pit, so as to support the submersible barge in the horizontal pit and level it; S4, the plurality of hydraulic jacks on the submersible barge are extended to be in pressure connection with the outer wall of the caisson close to the side of the horizontal pit and the second pit wall of the horizontal pit, respectively, so that the limiting block is in pressure connection with the dock sill stone; the plurality of hydraulic lifting points on the arm frame are extended again, so that the water stop structure of the bottom surface of the caisson is in sealed pressure connection with the dock sill, the first pit wall of the horizontal pit and the base surface around the lower hinge support to be repaired; S5, start the submersible pump to drain the water in the caisson to expose the lower hinge support to be repaired, forming a dry operation environment; S6, the workers enter the caisson through the access shaft to carry out maintenance work.

10. The construction method of claim 9, wherein the method further comprises: The submersible barge is provided with a GNSS receiver for positioning the submersible barge when it is moving in the water and submerging.

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