Water stop core wall structure of dock plugging cofferdam

By combining the metal folding wall with the driving, water injection and fixing structures, the problems of slow solidification and insufficient impermeability of the core wall of the dock dam were solved, achieving a fast and efficient waterproofing effect.

CN121473370APending Publication Date: 2026-02-06CHINA STATE CONSTR HARBOR CONSTR
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Patent Information

Application Number
CN202511928024.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-19
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

The existing concrete pouring of the cofferdam core wall for dock sealing has a long curing time and is prone to becoming hollow, resulting in insufficient impermeability and strength, which affects the water-stopping effect.

Method used

The system combines a metal folding wall with a drive structure. A servo motor drives the metal folding wall to fold into the bonding groove, and a water injection structure forms a dynamic seal. Water pressure is used to tightly bond the wall, improving its waterproof performance. At the same time, a fixing structure ensures the stability of the wall.

Benefits of technology

It achieves rapid installation and efficient water stopping. The metal folding wall has high waterproof strength, good impermeability, and strong stability, avoiding the defects of traditional concrete pouring.

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Abstract

A dock plugging cofferdam water stop core wall structure belongs to the technical field of dock water stop walls and comprises two wall bases and a metal turnover wall, fitting grooves are formed in the two wall bases, and a driving structure is fixedly mounted on one side of the outer surface of each wall base; through driving of a servo motor, an output shaft of the servo motor drives a connecting rod to rotate, the connecting rod is connected with second hinge rods, the second hinge rods on the two sides are hinged to the ends of first hinge rods, when the connecting rod rotates, the second hinge rods can drive the first hinge rods to change the angle, and therefore the metal folding wall can be folded upwards; due to the fact that the attaching grooves are formed, the metal turnover wall bodies can be turned over to enter the attaching grooves and fixed, at the moment, the dock entrance is blocked, and the structure can be rapidly installed at the dock entrance and exit through the prefabricated metal turnover wall bodies; meanwhile, the metal turnover wall body is made of stainless steel, and the surface is coated with a corrosion-resistant coating and a marine organism adhesion preventing coating, so that the overall strength of the device can be further enhanced.
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Description

Technical Field

[0001] This invention relates to the field of dock stop wall technology, specifically to a dock sealing dam stop core wall structure. Background Technology

[0002] A dock is a dock-like structure used for shipbuilding and repair. When flooded, it allows ships to enter and exit; when dewatered, it allows for shipbuilding and repair on a dry bottom. Docks can be divided into three categories: dry docks, flooded docks, and floating docks. Dry docks are the most commonly used, and the term "dock" generally refers to a dry dock. Docks evolved from the initial "ship pits." On tidal coasts, people used the rise and fall of water levels to raise and lower ships. At high tide, ships were led into a "ship pit" surrounded on three sides by earthen dikes. At low tide, the ships sat on pre-set supports, and the gaps were sealed with embankments for repair work. When the ships were to leave the pit, the embankments were removed, and they were allowed to leave at high tide. Later, the earthen dikes were replaced with dock walls, and the embankments with dock gates. Water pumps were used to control the rise and fall of the water level inside the dock, gradually evolving into dry docks.

[0003] The existing dock sealing cofferdam water-stopping core wall still has certain shortcomings in actual use: most of the existing dock water-stopping core walls are cast in place with concrete. However, the concrete water-stopping wall has a long curing time and is prone to voids (cavities) inside the concrete, which reduces impermeability and strength and affects the water-stopping effect. Based on the shortcomings of the existing technology, this invention designs a dock sealing cofferdam water-stopping core wall structure. Summary of the Invention

[0004] This invention provides a dock sealing cofferdam core wall structure, which has the advantages of high waterproof strength and fast construction speed, and solves the problems of low strength, easy penetration and long construction time of traditional concrete pouring waterstop walls.

[0005] This invention provides the following technical solution: a dock sealing cofferdam water-stopping core wall structure, comprising two wall bases and a metal folded wall. The two wall bases have internal fitting grooves, and a driving structure is fixedly installed on one side of the outer surface of each wall base. The driving structure includes a sector-shaped seat and two connecting blocks. The two connecting blocks are fixedly connected to the metal folded wall. The two sector-shaped seats have internal arc grooves. A first waterproof box is fixedly installed on the outer surface of one sector-shaped seat. A fixing seat is fixedly installed inside the first waterproof box. A servo motor is fixedly installed inside the fixing seat. A connecting rod is fixedly installed at one end of the output shaft of the servo motor. A bracket is fixedly installed on the top of the other sector-shaped seat. The bracket is rotatably connected to the connecting rod. Second hinge rods are fixedly installed on both sides of the outer surface of the connecting rod. First hinge rods are hingedly installed at the ends of the two second hinge rods. The two first hinge rods are hingedly connected to the metal folded wall. A sliding rod is fixedly installed on one side of the outer surface of each connecting block, and the sliding rod is slidably connected to the arc groove.

[0006] As a preferred embodiment of the present invention, the two wall bases are provided with fitting grooves inside, the two fitting grooves are tightly fitted with the metal folding wall, and a first hinge seat is fixedly installed on one side of the outer surface of the two wall bases, and the two first hinge seats are hingedly connected to the metal folding wall.

[0007] As a preferred embodiment of the present invention, a wave-damping frame is fixedly installed on one side of the outer surface of the metal folding wall, and two second hinge seats are fixedly installed on one side of the outer surface of the wave-damping frame. The two second hinge seats are hinged to the ends of the first hinge rod. A cavity is opened inside the metal folding wall, and a water inlet is opened at the top of the outer surface of the metal folding wall.

[0008] As a preferred embodiment of the present invention, a water injection structure is fixedly installed on one side of the outer surface of the metal folding wall. The water injection structure includes a second waterproof box, and a water pump is installed inside the second waterproof box.

[0009] As a preferred embodiment of the present invention, a first water pipe is fixedly installed at one output port of the water pump inside the second waterproof box, and the first water pipe extends into the interior of the metal folding wall.

[0010] As a preferred embodiment of the present invention, a second water pipe is fixedly installed at the other output port of the internal water pump of the second waterproof box, and the second water pipe is located outside the metal folding wall.

[0011] As a preferred embodiment of the present invention, two fixing structures are fixedly installed on one side of the outer surface of the two wall bases, and the four fixing structures include four square groove blocks, four groove rods, and four sets of fixing rings.

[0012] As a preferred embodiment of the present invention, the four square groove blocks are fixed on the inner side of the two wall bases, and the four square groove blocks are located on the right side of the fitting groove.

[0013] As a preferred embodiment of the present invention, the four grooved rods are fixedly connected to the metal folding wall, and the four grooved rods have holes inside.

[0014] As a preferred embodiment of the present invention, the four sets of fixing rings are fixed on one side of the outer surface of the two wall bases, and electric push rods are fixedly installed inside the four sets of fixing rings. Insert rods are fixedly installed at one end of the telescopic rods of the four electric push rods.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This dock dam water-stopping core wall structure, through a metal folding wall and a driving structure, is used in the following way: The metal folding wall is hinged to the first hinge seat. When water-stopping is required, the output shaft of the servo motor drives the connecting rod to rotate. Since the connecting rod is connected to the second hinge rod, and the two second hinge rods are hinged to the ends of the first hinge rod, the rotation of the connecting rod causes the second hinge rod to change the angle of the first hinge rod, thus allowing the metal folding wall to fold upwards. Due to the fitting groove, the metal folding wall can fold into the fitting groove and be fixed, thus blocking the dock opening. This structure, using prefabricated metal folding walls, can be quickly installed at the dock entrance and exit. The metal folding wall is made of stainless steel and coated with a corrosion-resistant coating and a marine organism-resistant coating, further strengthening the overall strength of the device and making it less prone to penetration. Furthermore, the installation efficiency of the metal folding wall is significantly improved compared to traditional concrete pouring, accelerating the efficiency of water-stopping the dam. 2. The dock's cofferdam water-stopping core wall structure, through a water injection mechanism, after the metal folded wall is folded and connected to the wall base, a water pump inside the second waterproof box is activated, filling the inside of the metal folded wall with water through the second and first water pipes. After water injection, the water pressure causes the metal folded wall to fit tightly against the bonding groove, filling tiny gaps and forming a dynamic sealing barrier. This improves the high tensile strength and corrosion resistance of the metal folded wall, further ensuring long-term waterproof performance. It also improves the stability of the water-stopping state of the metal folded wall. When the metal folded wall is folded down and retracted, the water inside the metal folded wall is drained, reducing the weight of the metal folded wall. 3. The dock sealing cofferdam water-stopping core wall structure, through a fixed structure, after the metal folding wall is folded and connected to the wall base, four grooved rods are inserted into the square groove block. At this time, the extension rods of the four electric push rods drive the insertion rods to move forward and insert them into the groove rods. At this time, the metal folding wall can be fixed and limited to avoid the metal folding wall accidentally folding downward and causing the cofferdam to fail if the servo motor suddenly fails due to a short circuit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the bonding groove structure of the present invention; Figure 3 This is a schematic diagram of the water inlet structure of the present invention; Figure 4 This is a schematic diagram of the arc groove structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the driving structure of the present invention; Figure 7 This is a schematic diagram of the servo motor structure of the present invention; Figure 8 This is a schematic diagram of the water injection structure of the present invention.

[0017] In the diagram: 1. Wall base; 2. Metal folding wall; 21. Fitting groove; 22. First hinge seat; 23. Wave damping frame; 24. Second hinge seat; 25. Water inlet; 3. Drive structure; 31. Fan-shaped seat; 32. Arc groove; 33. Connecting block; 34. Slide rod; 35. First hinge rod; 36. Second hinge rod; 37. Bracket; 38. First waterproof box; 39. Fixing seat; 310. Servo motor; 311. Connecting rod; 4. Water injection structure; 41. Second waterproof box; 42. First water pipe; 43. Second water pipe; 5. Fixing structure; 51. Square groove block; 52. Fixing ring; 53. Electric push rod; 54. Groove rod; 55. Insert rod. Detailed Implementation

[0018] The technical solutions of 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-8 The dock sealing cofferdam core wall structure includes two wall bases 1 and a metal folded wall 2. The interior of each wall base 1 has a fitting groove 21. A driving structure 3 is fixedly installed on one side of the outer surface of each wall base 1. The driving structure 3 includes a sector-shaped seat 31 and two connecting blocks 33. The two connecting blocks 33 are fixedly connected to the metal folded wall 2. The interior of each sector-shaped seat 31 has an arc groove 32. A first waterproof box 38 is fixedly installed on the outer surface of one sector-shaped seat 31. A fixing seat 39 is fixedly installed inside the first waterproof box 38. The fixing seat 39 has an inner... A servo motor 310 is fixedly installed on one side of the output shaft of the servo motor 310. A connecting rod 311 is fixedly installed on one end of the output shaft of the servo motor 310. A bracket 37 is fixedly installed on the top of another sector-shaped seat 31. The bracket 37 is rotatably connected to the connecting rod 311. Second hinge rods 36 are fixedly installed on both sides of the outer surface of the connecting rod 311. First hinge rods 35 are hingedly installed at the ends of the two second hinge rods 36. The two first hinge rods 35 are hingedly connected to the metal folding wall 2. A slide rod 34 is fixedly installed on one side of the outer surface of the two connecting blocks 33. The slide rod 34 is slidably connected to the arc groove 32.

[0020] Please see Figures 1-3Two wall bases 1 have fitting grooves 21 inside, which fit tightly against the metal folding wall 2. A first hinge seat 22 is fixedly installed on one side of the outer surface of each wall base 1, and the two first hinge seats 22 are hinged to the metal folding wall 2. A wave-damping frame 23 is fixedly installed on one side of the outer surface of the metal folding wall 2. Two second hinge seats 24 are fixedly installed on one side of the outer surface of the wave-damping frame 23, and the two second hinge seats 24 are hinged to the ends of the first hinge rod 35. A cavity is formed inside the metal folding wall 2, and a water inlet 25 is formed at the top of the outer surface of the metal folding wall 2.

[0021] The wave-damping frame 23 helps to counteract the impact of water flow on the metal folding wall 2, thereby increasing its strength. The hinge between the second hinge seat 24 and the first hinge rod 35 allows the metal folding wall 2 to fold as it moves. The fitting groove 21 provides a sealing function when the metal folding wall 2 is fitted to it.

[0022] Please see Figures 1-4 A water injection structure 4 is fixedly installed on one side of the outer surface of the metal folding wall 2. The water injection structure 4 includes a second waterproof box 41, and a water pump is installed inside the second waterproof box 41. A first water pipe 42 is fixedly installed at one output port of the water pump inside the second waterproof box 41, and the first water pipe 42 extends into the interior of the metal folding wall 2. A second water pipe 43 is fixedly installed at the other output port of the water pump inside the second waterproof box 41, and the second water pipe 43 is located on the outside of the metal folding wall 2.

[0023] The water pump inside the second waterproof box 41 is activated, and water is filled into the metal folding wall 2 through the second water pipe 43 and the first water pipe 42. After water is injected, the water pressure makes the metal folding wall 2 fit tightly with the fitting groove 21, filling the tiny gaps and forming a dynamic sealing barrier. This improves the high tensile strength and corrosion resistance of the metal folding wall 2, further ensuring long-term waterproof performance. At the same time, it can improve the stability of the water-stopping state of the metal folding wall 2. When the metal folding wall 2 is flipped down and retracted, the water inside the metal folding wall 2 is drained to reduce the weight of the metal folding wall 2.

[0024] Please see Figures 1-5Two fixing structures 5 are fixedly installed on one side of the outer surface of the two wall bases 1. The four fixing structures 5 include four square groove blocks 51, four groove rods 54, and four sets of fixing rings 52. The four square groove blocks 51 are fixed to the inner side of the two wall bases 1 and are located on the right side of the fitting groove 21. The four groove rods 54 are fixedly connected to the metal folding wall 2, and holes are opened inside the four groove rods 54. The four sets of fixing rings 52 are fixed to one side of the outer surface of the two wall bases 1. Electric push rods 53 are fixedly installed inside the four sets of fixing rings 52, and insertion rods 55 are fixedly installed at one end of the telescopic rods of the four electric push rods 53.

[0025] After the metal folding wall 2 is folded and connected to the wall base 1, the four grooved rods 54 are inserted into the square groove block 51. At this time, the four electric push rods 53 drive the telescopic rods to move the insertion rod 55 forward, so that it can be inserted into the grooved rod 54. At this time, the metal folding wall 2 can be fixed and limited to avoid the metal folding wall 2 from accidentally folding downward and causing the cofferdam to fail when the servo motor 310 suddenly fails due to a short circuit.

[0026] Working principle: When the dock dam water-stopping core wall structure is used, the servo motor 310 first drives the output shaft to rotate the connecting rod 311. Since the connecting rod 311 is connected to the second hinge rod 36, and the two sides of the second hinge rod 36 are hinged to the ends of the first hinge rod 35, when the connecting rod 311 rotates, the second hinge rod 36 can drive the first hinge rod 35 to change angle, thereby causing the metal folding wall 2 to fold upward. Due to the setting of the fitting groove 21, the metal folding wall 2 can fold into the fitting groove 21 and be fixed. At this time, the dock opening is blocked. Then, after the metal folding wall 2 is folded and connected to the wall base 1, the water pump inside the second waterproof box 41 is started, and water is filled into the metal folding wall 2 through the second water pipe 43 and the first water pipe 42. After water is filled, the water pressure causes the metal folding wall 2 to fold upward. The folding wall 2 fits tightly with the fitting groove 21, filling tiny gaps and forming a dynamic sealing barrier. This improves the high tensile strength and corrosion resistance of the metal folding wall 2, further ensuring long-term waterproof performance. It also improves the stability of the water-stopping state of the metal folding wall 2. When the metal folding wall 2 is folded down and retracted, the water inside the metal folding wall 2 is drained to reduce its weight. Finally, after the metal folding wall 2 is folded down and connected to the wall base 1, four groove rods 54 are inserted into the square groove block 51. At this time, the four electric push rods 53 drive their telescopic rods to move the insertion rods 55 forward, allowing them to be inserted into the groove rods 54. This fixes and limits the metal folding wall 2 to prevent the metal folding wall 2 from accidentally folding down and causing the cofferdam to fail if the servo motor 310 suddenly fails due to a short circuit.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dock sealing cofferdam core wall structure, comprising two wall bases (1) and a metal folded wall (2), characterized in that: The two wall bases (1) have fitting grooves (21) inside, and a driving structure (3) is fixedly installed on one side of the outer surface of the two wall bases (1). The drive structure (3) includes a sector-shaped base (31) and two connecting blocks (33). The two connecting blocks (33) are fixedly connected to the metal folding wall (2). The two sector-shaped bases (31) have arc grooves (32) inside. A first waterproof box (38) is fixedly installed on the outer surface of one sector-shaped base (31). A fixed seat (39) is fixedly installed inside the first waterproof box (38). A servo motor (310) is fixedly installed inside the fixed seat (39). A connecting rod (31) is fixedly installed at one end of the output shaft of the servo motor (310). 1) A bracket (37) is fixedly installed on the top of another sector seat (31). The bracket (37) is rotatably connected to the connecting rod (311). A second hinge rod (36) is fixedly installed on both sides of the outer surface of the connecting rod (311). A first hinge rod (35) is hingedly installed at the ends of the two second hinge rods (36). The two first hinge rods (35) are hingedly connected to the metal folding wall (2). A slide rod (34) is fixedly installed on one side of the outer surface of the two connecting blocks (33). The slide rod (34) is slidably connected to the arc groove (32).

2. The dock sealing cofferdam water-stopping core wall structure according to claim 1, characterized in that: The two wall bases (1) have fitting grooves (21) inside, and the two fitting grooves (21) are tightly fitted with the metal folded wall (2). The two wall bases (1) have a first hinge seat (22) fixedly installed on one side of their outer surface, and the two first hinge seats (22) are hinged to the metal folded wall (2).

3. The dock sealing cofferdam water-stopping core wall structure according to claim 1, characterized in that: A wave-damping frame (23) is fixedly installed on one side of the outer surface of the metal folding wall (2). Two second hinge seats (24) are fixedly installed on one side of the outer surface of the wave-damping frame (23). The two second hinge seats (24) are hinged to the end of the first hinge rod (35). A cavity is opened inside the metal folding wall (2). A water inlet (25) is opened at the top of the outer surface of the metal folding wall (2).

4. The dock sealing cofferdam water-stopping core wall structure according to claim 1, characterized in that: A water injection structure (4) is fixedly installed on one side of the outer surface of the metal folding wall (2). The water injection structure (4) includes a second waterproof box (41), and a water pump is installed inside the second waterproof box (41).

5. The dock sealing cofferdam water-stopping core wall structure according to claim 4, characterized in that: The first water pipe (42) is fixedly installed at one output port of the water pump inside the second waterproof box (41), and the first water pipe (42) extends into the interior of the metal folding wall (2).

6. The dock sealing cofferdam water-stopping core wall structure according to claim 5, characterized in that: The second water pipe (43) is fixedly installed at the other output port of the internal water pump of the second waterproof box (41), and the second water pipe (43) is located outside the metal folding wall (2).

7. The dock sealing cofferdam water-stopping core wall structure according to claim 1, characterized in that: Two fixing structures (5) are fixedly installed on one side of the outer surface of the two wall bases (1). The four fixing structures (5) include four square groove blocks (51), four groove rods (54), and four sets of fixing rings (52).

8. The dock sealing cofferdam water-stopping core wall structure according to claim 7, characterized in that: The four square groove blocks (51) are fixed on the inner side of the two wall bases (1), and the four square groove blocks (51) are located on the right side of the fitting groove (21).

9. The dock sealing cofferdam water-stopping core wall structure according to claim 7, characterized in that: The four groove rods (54) are fixedly connected to the metal folding wall (2), and the four groove rods (54) have holes inside.

10. The dock sealing cofferdam water-stopping core wall structure according to claim 7, characterized in that: The four sets of fixing rings (52) are fixed on one side of the outer surface of the two wall bases (1). Electric push rods (53) are fixedly installed inside the four sets of fixing rings (52). Insert rods (55) are fixedly installed at one end of the telescopic rods of the four electric push rods (53).