Antifouling curtain for dredging engineering and construction method thereof

Abstract

The invention discloses an anti-fouling curtain for dredging engineering and a construction method thereof, the anti-fouling curtain for dredging engineering comprises a plurality of anti-fouling curtain bodies connected in sequence, the anti-fouling curtain bodies are connected with rope sleeves, and the same connecting ring is arranged between the rope sleeves on every two adjacent anti-fouling curtain bodies in a sleeving mode; the connecting ring comprises a main ring and an auxiliary rod, the auxiliary rod is hinged to the main ring, the main ring is rotationally connected with a connecting sleeve, and the connecting sleeve is in threaded connection with the auxiliary rod. By the adoption of the technical scheme, the antifouling curtain is composed of the multiple antifouling curtain bodies, the antifouling curtain bodies are convenient to transport, meanwhile, when a single antifouling curtain body is damaged, the single antifouling curtain body can be directly replaced, repairing is not needed, the maintenance efficiency is improved, and the maintenance cost is reduced. In addition, the adjacent antifouling curtain bodies are connected in the mode that the connecting rings are matched with the rope sleeves, assembling and disassembling are convenient, the mode that the main rings and the auxiliary rods are fixed through the connecting sleeves enables the overall strength of the connecting rings to be high, and stability and reliability of connection are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of dredging engineering, and in particular to an anti-fouling curtain for dredging engineering and a construction method thereof. Background Art

[0002] To prevent the spread of turbid silt during underwater dredging by construction vessels, which could harm the ecological environment and aquaculture, anti-fouling measures are required at the construction boundary. These measures typically involve anti-fouling curtains. These curtains float on the water surface along a designed trajectory to block pollutants.

[0003] The existing anti-fouling curtain is made of several units sewn together, but this method is not detachable, which makes transportation more troublesome and maintenance more inconvenient. Summary of the Invention

[0004] The purpose of this application is to provide an anti-fouling curtain for dredging engineering and a construction method thereof, so as to improve the problem that the high-altitude construction of the tie beam is more troublesome and has higher safety hazards.

[0005] In the first aspect, the present application provides an anti-fouling curtain for dredging engineering, which adopts the following technical solution: An anti-pollution curtain for dredging engineering comprises several anti-pollution curtain main bodies connected in sequence, rope loops being connected to the anti-pollution curtain main bodies, and a common connecting ring being provided between the rope loops on two adjacent anti-pollution curtain main bodies; the connecting ring comprises a main ring and a secondary rod, the secondary rod being hinged to the main ring, a connecting sleeve being rotatably connected to the main ring, and the connecting sleeve being threadedly connected to the secondary rod.

[0006] By adopting the above technical solution, the anti-pollution curtain is composed of several anti-pollution curtain bodies, which facilitates the transportation of the anti-pollution curtain bodies. At the same time, when a single anti-pollution curtain body is damaged, the single anti-pollution curtain body can be directly replaced without repair, thereby improving maintenance efficiency. In addition, the connection between adjacent anti-pollution curtain bodies is achieved by combining connecting rings and rope loops, which makes assembly and disassembly more convenient. The way the connecting sleeve fixes the main ring and the auxiliary rod makes the overall strength of the connecting ring higher, thereby ensuring the stability and reliability of the connection.

[0007] Optionally, an extension section is connected to the anti-pollution curtain main body, and the extension section is bent toward the anti-pollution curtain main body at one end away from the anti-pollution curtain main body and connected to the anti-pollution curtain main body to form a accommodating area between the extension section and the anti-pollution curtain main body, and a foam shaft is provided in the accommodating area.

[0008] Through the above technical solution, the extension section is used to wrap the foam shaft to achieve the connection between the foam shaft and the anti-fouling curtain body, thereby making it easier to use the foam shaft to make the top of the anti-fouling curtain body float on the water surface.

[0009] Optionally, a wire-releasing hole is provided on the extension section along the length direction of the anti-fouling curtain main body, a control rope is passed through the wire-releasing hole, and the control rope passes through several extension sections of the anti-fouling curtain main body at the same time.

[0010] Through the above technical solution, the wire-releasing hole is convenient for the control rope to pass through, and the two ends of the control rope are convenient for connection with fixed objects, thereby determining the positions of several anti-fouling curtain bodies on the water surface and arranging the anti-fouling curtains according to the set trajectory.

[0011] Optionally, a group of fixing steel plates are respectively provided on both sides of the anti-fouling curtain body and the extension section along the thickness direction of the anti-fouling curtain body, and fixing bolts are passed through the fixing steel plates. The heads of the fixing bolts pass through the two groups of fixing steel plates and are threadedly connected with the fixing bolts.

[0012] Through the above technical solution, the cooperation of fixing bolts and fixing nuts is utilized to facilitate the reliable connection between the extension section and the anti-pollution curtain main body, and the two sets of fixing steel plates further enhance the reliability of the connection, while avoiding the possibility of damage to the anti-pollution curtain main body or the extension section due to direct contact between the fixing bolts and fixing nuts and the extension section or the anti-pollution curtain main body.

[0013] Optionally, a sinking device is connected to the bottom of the anti-pollution curtain body, and the sinking device has a weight state and a light state. The sinking device realizes the switching between the weight state and the light state through an adjustment component provided on the sinking device; when the sinking device is in the weight state, the sinking device has a gravity that can make the anti-pollution curtain body sink underwater; when the sinking device is in the light state, the sinking device reduces its own gravity so that the anti-pollution curtain body can be taken out of the water.

[0014] Through the above technical solution, the sinking device switches between a heavy state and a lightweight state. When the anti-pollution curtain is lowered underwater, the sinking device switches to a heavy state with a larger weight, which is convenient for driving the bottom of the anti-pollution curtain body to sink, so that the underwater part of the anti-pollution curtain body is in an unfolded state and presents an approximately vertical state, so as to increase the anti-pollution height of the anti-pollution curtain body and reduce the possibility of pollutants passing through. When the anti-pollution curtain needs to be maintained and folded up, the sinking device switches to a lightweight state. At this time, the weight of the sinking device is relatively small, which is convenient for taking out the anti-pollution curtain body. In particular, most existing anti-pollution curtains still rely on manual maintenance and recovery. If stones or the like are used as sinking objects, maintenance and folding are extremely laborious.

[0015] Optionally, the sinking device includes a sinking cylinder, a hook is connected to the sinking cylinder, the hook is connected to the connecting ring, and a accommodating chamber is provided in the sinking cylinder; the adjusting assembly includes a piston, a pull rope, an inlet part and an outlet part, the piston slides in the accommodating chamber along the axial direction of the sinking cylinder, one end of the pull rope is connected to the piston, and the other end passes through the sinking cylinder and is tied to the control rope, the inlet part is provided on the top and side wall of the sinking cylinder, and the outlet part is provided at the top of the sinking cylinder.

[0016] By adopting the above technical solution, when the sinking device needs to be switched from the heavy state to the light state, the pull rope is pulled, and the pull rope drives the piston to move, so that the water in the accommodating chamber is discharged from the outlet piece, thereby switching the sinking device from the heavy state to the light state.

[0017] Optionally, the inlet part includes a sealing cover, and a step groove for accommodating the sealing cover is provided on the sinking cylinder. The sealing cover is hinged to the side wall of the step groove, and the bottom of the step groove abuts against the sealing cover to prevent the sealing cover from flipping in a direction away from the sinking cylinder.

[0018] By adopting the above technical solution, the bottom of the step groove prevents the sealing cover from flipping in the direction away from the sinking cylinder, that is, water can only enter the sinking cylinder from outside the sinking cylinder and cannot be discharged from the sinking cylinder, which facilitates the water purification of the sinking cylinder and facilitates the sinking device to switch to the weight state.

[0019] Optionally, a magnetic element is provided on the bottom of the step groove, and the sealing cover is made of iron. The magnetic attraction force of the magnetic element on the sealing cover is smaller than the water pressure.

[0020] Through the above technical solution, the magnetic suction part can easily absorb the sealing cover, but when the sinking cylinder is placed underwater, the water pressure overcomes the magnetic suction force, and the sealing cover is opened, making it easier for water to enter the sinking cylinder, so that the sinking device can switch to the weight state.

[0021] Optionally, a filter screen is further provided on the sinking cylinder, and the filter screen is provided on a side of the sealing cover away from the accommodating cavity.

[0022] By adopting the above technical solution, the water entering the sinking tube can be filtered through the filter screen, reducing the possibility of pollutants or other impurities entering the sinking tube. After the sinking tube falls into the water, it is first tilted. At this time, the inlet parts on the side of the sinking tube begin to take in water, and the sinking tube gradually sinks. In the process of sinking the sinking tube, more and more inlet parts take in water, increasing the water intake efficiency, thereby accelerating the sinking of the sinking tube. In addition, there are multiple inlet parts, which can also reduce the possibility of a single inlet part being blocked and unable to take in water.

[0023] A construction method comprises the following steps: S1. Assembling the above-mentioned anti-fouling curtain for dredging engineering; S2, transporting the anti-fouling curtain for dredging engineering onto a transport vessel; S3. Delivering the anti-fouling curtain for the dredging project to the designed lower location by a transport vessel; S4, placing the anti-fouling curtains for dredging engineering into the water in sequence along the designed lowering route; S5. Fixing both ends of the anti-fouling curtain for dredging engineering.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The anti-pollution curtain is composed of several anti-pollution curtain bodies, which makes it easy to transport the anti-pollution curtain bodies. At the same time, when a single anti-pollution curtain body is damaged, it can be directly replaced without repair, which improves maintenance efficiency. In addition, the connection between adjacent anti-pollution curtain bodies is achieved by combining connecting rings and rope loops, which is convenient for assembly and disassembly. The way that the connecting loop fixes the main ring and the auxiliary rod makes the overall strength of the connecting ring higher, ensuring the stability and reliability of the connection; 2. Use the extension section to wrap the foam roller to connect the foam roller to the anti-fouling curtain body, so that the top of the anti-fouling curtain body can be floated on the water surface by using the foam roller; 3. The pay-out hole is convenient for the control rope to pass through, and the two ends of the control rope are convenient for connecting to fixed objects, thereby determining the position of several anti-fouling curtain bodies on the water surface and facilitating the arrangement of the anti-fouling curtains according to the set trajectory; 4. The combination of fixing bolts and nuts facilitates a reliable connection between the extension section and the anti-pollution curtain body. The two sets of fixing steel plates further enhance the reliability of the connection while preventing damage to the curtain body or extension section due to direct contact between the fixing bolts and nuts. 5. The sinking device switches between a heavy state and a lightweight state. When the anti-pollution curtain is lowered underwater, the sinking device switches to the heavy state, with a greater weight, which facilitates the sinking of the bottom of the anti-pollution curtain body, so that the underwater part of the anti-pollution curtain body is in an unfolded state and presents a nearly vertical state, thereby increasing the anti-pollution height of the anti-pollution curtain body and reducing the possibility of pollutants passing through. When the anti-pollution curtain needs to be folded up for maintenance, the sinking device switches to the lightweight state. At this time, the sinking device is lighter, making it easier to remove the anti-pollution curtain body. In particular, most existing anti-pollution curtains still rely on manual maintenance and recovery. If stones or other sinking objects are used as sinking objects, maintenance and folding are extremely laborious. 6. When the sinking device needs to be switched from the heavy state to the light state, the pull rope is pulled, and the pull rope drives the piston to move, so that the water in the accommodating chamber is discharged from the outlet, thereby switching the sinking device from the heavy state to the light state; 7. The bottom of the stepped groove prevents the sealing cover from turning away from the sinking tube, that is, water can only enter the sinking tube from outside the sinking tube and cannot be discharged from the sinking tube, which facilitates the water purification of the sinking tube and facilitates the switching of the sinking device to the weight state; 8. The magnetic suction part is convenient for adsorbing the sealing cover, but when the sinking tube is placed underwater, the water pressure overcomes the magnetic attraction, and the sealing cover is opened to facilitate water to enter the sinking tube, so that the sinking device switches to the weight state. The water entering the sinking tube is easily filtered through the filter screen to reduce the possibility of pollutants or other impurities entering the sinking tube. After the sinking tube falls into the water, it is first in a tilted state. At this time, the inlet parts on the side of the sinking tube begin to take in water, and the sinking tube gradually sinks. In the process of the sinking tube sinking, more and more inlet parts take in water, which increases the water intake efficiency and accelerates the sinking of the sinking tube. In addition, there are multiple inlet parts, which can also reduce the possibility of a single inlet part being blocked and unable to take in water. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the entire anti-fouling curtain for dredging engineering in the present invention.

[0026] Figure 2 yes Figure 1 A partial enlarged view of part A in the middle.

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure of the connecting ring in the present invention.

[0028] Figure 4 It is a schematic diagram of the cross-section structure of the sinking tube in the present invention.

[0029] Figure 5 yes Figure 4 A partial enlarged view of part B in the middle.

[0030] In the figure, 1. Anti-fouling curtain main body; 2. Rope loop; 3. Connecting ring; 31. Main ring; 32. Auxiliary rod; 33. Connecting sleeve; 4. Extension section; 41. Foam shaft; 42. Fixed steel plate; 43. Fixed bolt; 44. Fixed nut; 5. Sinking device; 51. Sinking cylinder; 511. Hook; 512. Accommodating chamber; 513. Step groove; 52. Adjusting assembly; 521. Piston; 522. Pull rope; 523. Inlet part; 5231. Sealing cover; 5232. Filter; 524. Outlet part; 525. Reset compression spring; 6. Control rope. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0032] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be broadly understood, for example, to mean fixed, removable, or integral; mechanically or electrically connected; directly or indirectly through an intermediary; or internally connected between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example 1 In a first aspect, the present application discloses an anti-fouling curtain for dredging engineering.

[0034] An anti-fouling curtain for dredging engineering, refer to Figures 1 to 5 , comprising a plurality of anti-pollution curtain bodies 1 connected in sequence, with rope loops 2 connected to the anti-pollution curtain bodies 1, and a common connecting ring 3 being provided between the rope loops 2 on two adjacent anti-pollution curtain bodies 1; the connecting ring 3 comprising a main ring 31 and a secondary rod 32, the secondary rod 32 being hinged to the main ring 31, a connecting sleeve 33 being rotatably connected to the main ring 31, and the connecting sleeve 33 being threadedly connected to the secondary rod 32. The anti-pollution curtain is formed by forming an anti-pollution curtain through a plurality of anti-pollution curtain bodies 1, which is convenient for transporting the anti-pollution curtain bodies 1. At the same time, when a single anti-pollution curtain body 1 is damaged, the single anti-pollution curtain body 1 can be directly replaced without repair, thereby improving maintenance efficiency. In addition, the connection of adjacent anti-pollution curtain bodies 1 is achieved by cooperating with the connecting ring 3 and the rope loop 2, which is convenient for assembly and disassembly, and the way in which the connecting sleeve 33 fixes the main ring 31 and the secondary rod 32 makes the overall strength of the connecting ring 3 higher, thereby ensuring the stability and reliability of the connection.

[0035] Specifically, an extension section 4 is connected to the anti-pollution curtain body 1. The end of the extension section 4, which is away from the anti-pollution curtain body 1, is bent toward the anti-pollution curtain body 1 and connected to the anti-pollution curtain body 1, so that a storage area is formed between the extension section 4 and the anti-pollution curtain body 1. The storage area is provided with a foam shaft 41. The extension section 4 is used to wrap around the foam shaft 41, thereby achieving the connection between the foam shaft 41 and the anti-pollution curtain body 1, thereby facilitating the use of the foam shaft 41 to float the top of the anti-pollution curtain body 1 on the water surface.

[0036] The extension section 4 is provided with a pay-off hole along the length of the anti-fouling curtain body 1. A control rope 6 is passed through the pay-off hole. The control rope 6 passes through the extension sections 4 of several anti-fouling curtain bodies 1 at the same time. The pay-off hole facilitates the passage of the control rope 6, and the ends of the control rope 6 are conveniently connected to fixed objects, thereby determining the position of several anti-fouling curtain bodies 1 on the water surface and facilitating the arrangement of the anti-fouling curtains according to the set trajectory.

[0037] More specifically, a set of fixing steel plates 42 are respectively provided on either side of the anti-pollution curtain body 1 and the extension section 4 along the thickness direction of the anti-pollution curtain body 1. Fixing bolts 43 are threaded through the fixing steel plates 42. The heads of the fixing bolts 43 pass through the two sets of fixing steel plates 42 and are threadedly connected to the fixing bolts 43. The combination of the fixing bolts 43 and the fixing nuts 44 facilitates a reliable connection between the extension section 4 and the anti-pollution curtain body 1. The two sets of fixing steel plates 42 further enhance the reliability of the connection while preventing damage to the anti-pollution curtain body 1 or the extension section 4 due to direct contact between the fixing bolts 43 and the fixing nuts 44 and the extension section 4 or the anti-pollution curtain body 1.

[0038] In addition, a sinking device 5 is connected to the bottom of the anti-pollution curtain main body 1. The sinking device 5 has a weight state and a light state. The sinking device 5 realizes the switching between the weight state and the light state through an adjustment component 52 provided on the sinking device 5; when the sinking device 5 is in the weight state, the sinking device 5 has a gravity that can make the anti-pollution curtain main body 1 sink underwater; when the sinking device 5 is in the light state, the sinking device 5 reduces its own gravity so that the anti-pollution curtain main body 1 can be taken out of the water. The sinking device 5 switches between a heavy state and a lightweight state. When the anti-pollution curtain is lowered underwater, the sinking device 5 switches to the heavy state, possessing a greater weight, which facilitates sinking the bottom of the anti-pollution curtain body 1, causing the underwater portion of the anti-pollution curtain body 1 to be in an unfolded and approximately vertical state, thereby increasing the anti-pollution height of the anti-pollution curtain body 1 and reducing the possibility of pollutants passing through. When the anti-pollution curtain needs to be retracted for maintenance, the sinking device 5 switches to the lightweight state, where the weight of the sinking device 5 is relatively small, making it easier to remove the anti-pollution curtain body 1. This is especially true since most existing anti-pollution curtains still rely on manual maintenance and recovery. If stones or other sinking objects are used as sinking objects, maintenance and retraction are extremely laborious. In this embodiment, the sinking device 5 weighs 10 to 20 kilograms when switched to the heavy state, and 1 to 2 kilograms when switched to the lightweight state.

[0039] Specifically, the sinking device 5 includes a sinking cylinder 51, which is connected to a hook 511 connected to the connecting ring 3. The sinking cylinder 51 is provided with a receiving chamber 512. The adjusting assembly 52 includes a piston 521, a pull rope 522, an inlet 523, and an outlet 524. The piston 521 slides in the receiving chamber 512 along the axial direction of the sinking cylinder 51. One end of the pull rope 522 is connected to the piston 521, and the other end passes through the sinking cylinder 51 and is tied to the control rope 6. The inlet 523 is provided on the top and side wall of the sinking cylinder 51, and the outlet 524 is provided on the top of the sinking cylinder 51. When it is necessary to switch the sinking device 5 from the heavy state to the light state, the pull rope 522 is pulled, and the pull rope 522 drives the piston 521 to move, so that the water in the receiving chamber 512 is discharged from the outlet 524, thereby switching the sinking device 5 from the heavy state to the light state. A return spring 525 is sleeved around the pull cord 522 and positioned within the accommodating chamber 512. One end of the return spring 525 abuts the piston 521, while the other end abuts the end surface of the accommodating chamber 512. The return spring is used to reset the piston 521 after the pull cord 522 is released, and also facilitates the rapid absorption of water into the accommodating chamber 512. Furthermore, the return spring increases the stability of the piston 521's movement, enhancing its sealing effectiveness.

[0040] More specifically, the inlet member 523 includes a sealing cover 5231. The lower cylinder 51 is provided with a stepped groove 513 for accommodating the sealing cover 5231. The sealing cover 5231 is hingedly connected to the sidewall of the stepped groove 513. The bottom of the stepped groove 513 abuts against the sealing cover 5231 to prevent the sealing cover 5231 from turning away from the lower cylinder 51. The bottom of the stepped groove 513 prevents the sealing cover 5231 from turning away from the lower cylinder 51. In other words, water can only enter the lower cylinder 51 from outside and cannot be discharged from the lower cylinder 51, thereby facilitating water purification in the lower cylinder 51 and facilitating the switching of the sinking device 5 to the weight state.

[0041] A magnetic element is mounted on the bottom of the stepped groove 513. The sealing cover 5231 is made of iron. The magnetic attraction of the magnetic element to the sealing cover 5231 is less than the water pressure. The magnetic element easily attracts the sealing cover 5231. However, when the sinking cylinder 51 is lowered into the water, the water pressure overcomes the magnetic attraction, and the sealing cover 5231 is opened, allowing water to enter the sinking cylinder 51, causing the sinking device 5 to switch to the weight state.

[0042] It should be noted that the structure of the outlet 524 is basically the same as that of the inlet 523, and the two are only flipped in opposite directions, so they will not be described here. In addition, the sinking cylinder 51 is further provided with a filter screen 5232, which is arranged on the side of the sealing cover 5231 away from the accommodating chamber 512, and the filter screen 5232 is coaxial with the step groove 513. The filter screen 5232 facilitates filtering of water entering the sinking cylinder 51, reducing the possibility of pollutants or other impurities entering the sinking cylinder 51. After the sinking cylinder 51 falls into the water, it first becomes tilted. At this time, the inlet part 523 on the side of the sinking cylinder 51 begins to take in water, and the sinking cylinder 51 gradually sinks. As the sinking cylinder 51 sinks, more and more inlet parts 523 take in water, increasing the water intake efficiency and thus accelerating the sinking of the sinking cylinder 51. In addition, there are multiple inlet parts 523, which can also reduce the possibility of a single inlet part 523 being blocked and unable to take in water.

[0043] Working principle: The anti-pollution curtain is composed of several anti-pollution curtain main bodies 1, which is convenient for transporting the anti-pollution curtain main bodies 1. At the same time, when a single anti-pollution curtain main body 1 is damaged, the single anti-pollution curtain main body 1 can be directly replaced without repair, thereby improving maintenance efficiency. In addition, the connection between adjacent anti-pollution curtain main bodies 1 is achieved by cooperating with the connecting ring 3 and the rope loop 2, which is convenient for assembly and disassembly. The way in which the connecting sleeve 33 fixes the main ring 31 and the auxiliary rod 32 makes the overall strength of the connecting ring 3 higher, ensuring the stability and reliability of the connection.

[0044] In a second aspect, the present application discloses a construction method.

[0045] A construction method comprises the following steps: S1. Assembling the above-mentioned anti-fouling curtain for dredging engineering; S2. Transport the anti-fouling curtain for dredging project to the transport vessel; S3. Deliver the anti-fouling curtain for dredging engineering to the designed lower location by means of a transport vessel; S4. Place the anti-fouling curtains for dredging projects into the water in sequence along the designed lowering route; S5. Fix both ends of the anti-fouling curtain used for dredging projects.

[0046] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. An anti-fouling curtain for dredging engineering, characterized in that: It comprises a plurality of anti-fouling curtain main bodies (1) connected in sequence, wherein a rope loop (2) is connected to the anti-fouling curtain main body (1), and a common connecting ring (3) is provided between the rope loops (2) on two adjacent anti-fouling curtain main bodies (1); The connecting ring (3) comprises a main ring (31) and a secondary rod (32), wherein the secondary rod (32) is hinged to the main ring (31), a connecting sleeve (33) is rotatably connected to the main ring (31), and the connecting sleeve (33) is threadedly connected to the secondary rod (32).

2. The anti-fouling curtain for dredging engineering according to claim 1, characterized in that: An extension section (4) is connected to the anti-pollution curtain main body (1), and one end of the extension section (4) away from the anti-pollution curtain main body (1) is bent toward the anti-pollution curtain main body (1) and connected to the anti-pollution curtain main body (1), so that a accommodating area is formed between the extension section (4) and the anti-pollution curtain main body (1), and a foam shaft (41) is provided in the accommodating area.

3. The anti-fouling curtain for dredging engineering according to claim 2, characterized in that: The extension section (4) is provided with a wire-releasing hole along the length direction of the anti-fouling curtain main body (1), and a control rope (6) is passed through the wire-releasing hole. The control rope (6) passes through several extension sections (4) of the anti-fouling curtain main body (1) at the same time.

4. The anti-fouling curtain for dredging engineering according to claim 3, characterized in that: The anti-fouling curtain body (1) and the extension section (4) are respectively provided with a group of fixed steel plates (42) on both sides along the thickness direction of the anti-fouling curtain body (1), and the fixed steel plates (42) are penetrated by fixing bolts (43), and the heads of the fixing bolts (43) pass through the two groups of fixing steel plates (42) and are threadedly connected with the fixing bolts (43).

5. The anti-fouling curtain for dredging engineering according to claim 4, characterized in that: The bottom of the anti-fouling curtain body (1) is connected to a sinking device (5), the sinking device (5) has a heavy state and a light state, and the sinking device (5) realizes switching between the heavy state and the light state through an adjustment component (52) provided on the sinking device (5); When the sinking device (5) is in a weight state, the sinking device (5) has a gravity capable of causing the anti-fouling curtain body (1) to sink underwater; When the sinking device (5) is in a lightweight state, the sinking device (5) reduces its own weight so that the anti-fouling curtain main body (1) can be taken out of the water.

6. The anti-fouling curtain for dredging engineering according to claim 5, characterized in that: The sinking device (5) comprises a sinking cylinder (51), a hook (511) is connected to the sinking cylinder (51), the hook (511) is connected to the connecting ring (3), and a receiving chamber (512) is provided in the sinking cylinder (51); The adjustment assembly (52) includes a piston (521), a pull rope (522), an inlet piece (523) and an outlet piece (524). The piston (521) slides in the accommodating chamber (512) along the axial direction of the sinking cylinder (51). One end of the pull rope (522) is connected to the piston (521), and the other end passes through the sinking cylinder (51) and is tied to the control rope (6). The inlet piece (523) is arranged on the top and side wall of the sinking cylinder (51), and the outlet piece (524) is arranged at the top of the sinking cylinder (51).

7. The anti-fouling curtain for dredging engineering according to claim 6, characterized in that: The inlet part (523) includes a sealing cover (5231), and the lower cylinder (51) is provided with a step groove (513) for accommodating the sealing cover (5231). The sealing cover (5231) is hinged to the side wall of the step groove (513), and the bottom of the step groove (513) abuts against the sealing cover (5231) to prevent the sealing cover (5231) from turning over in a direction away from the lower cylinder (51).

8. The anti-fouling curtain for dredging engineering according to claim 7, characterized in that: A magnetic attraction member is provided on the bottom of the step groove (513), and the sealing cover (5231) is made of iron. The magnetic attraction force of the magnetic attraction member on the sealing cover (5231) is smaller than the water pressure.

9. The anti-fouling curtain for dredging engineering according to claim 8, characterized in that: The sinking cylinder (51) is further provided with a filter screen (5232), and the filter screen (5232) is arranged on a side of the sealing cover (5231) away from the accommodating chamber (512).

10. A construction method, characterized in that: The steps include: S1. Assembling the anti-fouling curtain for dredging engineering according to any one of claims 1 to 9; S2, transporting the anti-fouling curtain for dredging engineering onto a transport vessel; S3. Delivering the anti-fouling curtain for the dredging project to the designed lower location by a transport vessel; S4, placing the anti-fouling curtains for dredging engineering into the water in sequence along the designed lowering route; S5. Fixing both ends of the anti-fouling curtain for dredging engineering.

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