A dredge suction pipe lifting device and method for a trailing suction hopper dredger

Abstract

The application discloses a kind of dredger suction dredger suction pipe lifting device and method, belong to dredger technical field.A kind of dredger suction dredger suction pipe lifting device, including being set on the hydraulic winch of ship deck, still include: wire rope, one end of wire rope is wound and is connected on the hydraulic winch, the end of wire rope away from the hydraulic winch is connected with suction pipe;Guide portion, guide portion includes the support seat being fixed on the ship deck and the guide wheel being set on the top end of support seat, wire rope is slidably connected with guide wheel;And anti-corrosion mechanism, anti-corrosion mechanism includes the support being fixed with ship deck, the silt loosening component being set on support and the cleaning component being connected with support by connecting frame;The application is convenient to lift suction pipe at the same time, realizes the automatic maintenance work of wire rope for lifting suction pipe, reduces the maintenance difficulty of staff, guarantees the maintenance effect of wire rope.

Description

Technical Field

[0001] This invention relates to the field of dredging technology, and in particular to a dredging device and method for lifting the suction pipe of a trailing suction dredging vessel. Background Technology

[0002] The suction pipe is a crucial component of a trailing suction hopper dredger. Through the rake head (the front end of the pipe used by the dredger to suck up mud or sediment), the suction pipe loosens the underwater soil layer and mixes it with water to form a mud-water mixture. This mixture is then pumped in and transported to designated locations, such as the dredger's mud bin or directly to a mud barge alongside the hull, achieving the purpose of dredging and reclamation. The suction pipe connects to the rake head, allowing the dredger to collect sediment through the rake head and pump it into the hull or processing equipment via the suction pipe. This connection method enables dredgers to effectively perform dredging and excavation operations, especially when handling sediment or conducting underwater engineering projects, where the combination of the rake head and suction pipe plays a key role.

[0003] In the prior art, patent application number CN202121441660.5 discloses a control device for a trailing suction hopper dredger. This device uses a winch in conjunction with a cable to lift and lower the suction pipe, making the dredging process safer and more reliable. Wire ropes are widely used on ships, and cables are generally made of wire rope. Currently, when lowering the suction pipe, the wire rope is typically extended deep into the seabed. Seawater is highly corrosive to wire ropes, and repeated underwater immersion causes seawater and sediment to adhere to the outside of the rope, leading to rust and a significantly shortened lifespan. The traditional method of rust prevention involves manually rinsing the wire rope with water from the surface during the retrieval process (lifting the suction pipe) and then manually applying rust inhibitor. This method is extremely labor-intensive for operators and has poor maintenance results, representing a major challenge in this field. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art, and to propose a dredging device and method for lifting the suction pipe of a trailing suction dredger.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A suction pipe lifting device for a trailing suction hopper dredger includes a hydraulic winch mounted on the deck of the vessel, and further includes:

[0007] A wire rope, one end of which is wound and connected to a hydraulic winch, and the end of which is away from the hydraulic winch is connected to a suction pipe;

[0008] The guide portion includes a support fixed to the ship's deck and a guide wheel mounted on top of the support, wherein the wire rope is slidably connected to the guide wheel; and

[0009] The anti-corrosion mechanism includes a support fixed to the ship's deck, a mud and sand loosening component installed on the support, and a cleaning component connected to the support via a connecting frame.

[0010] The mud and sand loosening component is connected to the cleaning component, and a transmission component is provided between the mud and sand loosening component and the hydraulic winch.

[0011] Preferably, the silt loosening component includes a first rotating ring rotatably connected to a support, a first support plate fixedly mounted on the first rotating ring, a loosening part provided at the end of the first support plate away from the first rotating ring, a second support plate fixedly mounted on the first rotating ring, a second rotating ring slidably connected at the end of the second support plate away from the first rotating ring, the loosening part rotatably connected to the outside of the second rotating ring, a slider fixedly mounted at the end of the second support plate away from the first rotating ring, and an annular groove that cooperates with the slider on the second rotating ring.

[0012] Preferably, the loosening part includes a sleeve rotatably connected to the outside of the second rotating ring and loosening portions evenly arranged circumferentially on the outside of the sleeve. The inner sidewall of the sleeve is provided with a plurality of guide grooves, and the outer sidewall of the second rotating ring is provided with a guide rod that cooperates with the guide grooves.

[0013] Preferably, a third support plate is fixed on the first rotating ring, a secondary gear is rotatably connected to the third support plate, a main gear that meshes with the secondary gear is rotatably connected inside the first rotating ring, a driven gear that meshes with the secondary gear is provided on the second rotating ring, and a second toothed ring that meshes with the main gear is fixed on the support.

[0014] Preferably, the loosening section includes a U-shaped plate fixed to the outside of the sleeve, a rotating shaft rotatably connected to the U-shaped plate, a connecting roller disposed on the rotating shaft, and a loosening brush disposed on the connecting roller. The loosening section also includes a first toothed ring fixedly connected to the end of the first support plate away from the first rotating ring. The first toothed ring is coaxially disposed with the sleeve. The U-shaped plate is rotatably connected to the first toothed ring. The rotating shaft is provided with a movable gear that meshes with the first toothed ring.

[0015] Preferably, the transmission assembly includes a support plate fixed on a support, a transmission rod rotatably connected to the support plate, a connecting rod parallel to the transmission rod connected to the hydraulic winch, a synchronous pulley provided on both the connecting rod and the transmission rod, a synchronous belt provided between the two synchronous pulleys, a main bevel gear connected to one end of the transmission rod, and a secondary bevel gear meshing with the main bevel gear provided on the first rotating ring.

[0016] Preferably, the cleaning assembly includes a working cylinder fixedly connected to the connecting frame, a piston slidably connected inside the working cylinder, an eccentric rod fixedly mounted on the transmission rod, a collar sleeved on the eccentric rod, a push rod fixedly mounted on the collar, and a sliding rod connected to the piston at the end of the push rod away from the collar, the sliding rod being slidably connected to the working cylinder.

[0017] Preferably, the piston has two parts, dividing the working cylinder into an oil chamber, a gas chamber, and a liquid chamber. The gas chamber is equipped with an inlet valve and an outlet valve, and the gas chamber is connected to an air jet ring sleeved on the outside of the wire rope through the outlet valve. The liquid chamber is equipped with an inlet valve and an outlet valve, and the liquid chamber is connected to an inlet pipe through the inlet valve. The end of the inlet pipe away from the working cylinder is connected to a water tank fixed on the support. The liquid chamber is connected to a spray ring sleeved on the outside of the wire rope through the outlet valve and a connecting pipe. The oil chamber is equipped with an oil inlet valve and an oil outlet valve, and the oil chamber is connected to an oil inlet pipe through the oil inlet valve. The end of the oil inlet pipe away from the working cylinder is connected to an oil storage tank located above the water tank. The oil chamber is connected to an oil spray ring sleeved on the outside of the wire rope through the outlet valve and a connecting pipe. The oil spray ring is connected to the support base.

[0018] Preferably, the hydraulic winch includes a bracket fixed on the ship's deck, a hydraulic motor fixed on the bracket, and a drum connected to the output shaft of the hydraulic motor and rotatably connected to the bracket, with the wire rope wound around the drum.

[0019] This invention also discloses a method for lifting the suction pipe of a trailing suction hopper dredger, which involves using a lifting device for the suction pipe of a trailing suction hopper dredger, and includes the following steps:

[0020] S1: The dredger releases the wire rope through the hydraulic winch, which lowers the suction pipe and rake head. The dredger cuts the bottom mud with the rake head and sucks up the cut bottom mud with the suction pipe.

[0021] S2: After the dredger finishes suctioning the mud, the hydraulic winch winds up the wire rope, which drives the suction pipe to rise. The wire rope passing through the second rotating ring is driven by the hydraulic winch. The transmission component is driven by the hydraulic winch, which in turn drives the mud loosening component. The mud loosening component causes the loosening part to rotate around the wire rope being wound up, so that the second rotating ring, together with the loosening brush, brushes the mud and sand attached to the outside of the wire rope.

[0022] S3: As the wire rope is continuously wound up, it passes through the spray ring, air spray ring, and oil spray ring in sequence. The wire rope is rinsed by the clean water in the spray ring, which washes away the loose mud and sand on the outside of the wire rope. Then the air spray ring blows away the water droplets remaining on the outside of the wire rope and dries it. The oil spray ring sprays anti-rust oil onto the dried wire rope, thus achieving the maintenance work during the winding process of the wire rope.

[0023] Compared with the prior art, the present invention provides a dredging device and method for lifting the suction pipe of a trailing suction hopper dredger, which has the following beneficial effects:

[0024] 1. The suction pipe lifting device and method of the trailing suction dredger, when the hydraulic winch winds up the wire rope, drives the anti-corrosion mechanism through the transmission component, so that the mud loosening component and the cleaning component cooperate. The mud loosening component brushes the mud and sand attached to the outside of the wire rope, which facilitates the subsequent cleaning component to effectively clean the mud and sand that is stubbornly attached to the wire rope. This avoids the mud and sand remaining on the outside of the wire rope when it is wound up, which would cause uneven winding of the wire rope and severe wear during winding, thereby extending the service life of the wire rope and improving the winding effect.

[0025] 2. In this trailing suction dredger suction pipe lifting device and method, when the loosening brush rotates around the sleeve, it can also rotate around the rotating roller, achieving full contact between the wire rope and the loosening brush. This avoids the loosening brush only contacting and rubbing with the wire rope at one position, which would cause the loosening brush to wear out too quickly. This results in a shorter replacement cycle for the loosening brush, effectively reducing the workload of the workers and extending the maintenance and replacement cycle of the mud and sand loosening components.

[0026] 3. The suction pipe lifting device and method of the trailing suction dredger involves the wire rope passing sequentially through a liquid spraying ring, an air spraying ring, and an oil spraying ring. The wire rope is then rinsed by clean water within the liquid spraying ring, which washes away loose mud and sand from the outside of the wire rope. Subsequently, the air spraying ring blows away any remaining water droplets from the rinsing process and dries the wire rope. Finally, the oil spraying ring applies rust-preventive oil to the dried wire rope, thus achieving maintenance during the wire rope winding process. This reduces the difficulty of maintenance work for workers and ensures effective maintenance of the wire rope. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0030] Figure 4 This is a schematic diagram of the structure of the top of the support of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the mud and sand loosening component of the present invention. Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the structure of the mud and sand loosening component of the present invention. Figure 2 ;

[0033] Figure 7 For the present invention Figure 6 A partially enlarged structural diagram of section A in the middle;

[0034] Figure 8 This is a schematic diagram of the external structure of the sleeve of the present invention;

[0035] Figure 9 This is a schematic diagram of the cleaning assembly of the present invention;

[0036] Figure 10 This is a cross-sectional structural diagram of the working cylinder of the present invention;

[0037] Figure 11 This is a schematic diagram of the synchronous pulley connected to the connecting rod according to the present invention.

[0038] In the diagram: 1. Ship deck; 2. Hydraulic winch; 201. Support; 202. Hydraulic motor; 203. Drum; 3. Wire rope; 4. Support seat; 401. Guide wheel; 5. Support; 501. Connecting frame; 6. First rotating ring; 601. First support plate; 602. Second support plate; 6021. Slider; 603. Third support plate; 6031. Secondary gear; 604. Main gear; 605. Secondary bevel gear; 7. Loosening section; 701. Sleeve; 7011. Guide groove; 702. Loosening section; 7021. U-shaped plate; 7022. Rotating shaft; 7023. Connecting roller; 7 024. Loosening brush; 703. First gear ring; 704. Movable gear; 8. Second rotating ring; 801. Annular groove; 802. Guide rod; 803. Driven gear; 9. Support plate; 901. Transmission rod; 902. Main bevel gear; 10. Connecting rod; 11. Synchronous pulley; 12. Second gear ring; 13. Working cylinder; 131. Piston; 132. Air jet ring; 133. Liquid inlet pipe; 134. Water tank; 135. Spray ring; 136. Oil inlet pipe; 137. Oil tank; 138. Oil spray ring; 14. Eccentric rod; 141. Collar; 142. Push rod; 143. Slide rod. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0040] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A suction pipe lifting device for a trailing suction hopper dredger includes a hydraulic winch 2 mounted on the deck 1 of the vessel, and also includes;

[0043] Wire rope 3, one end of which is wound and connected to hydraulic winch 2, and the end of wire rope 3 away from hydraulic winch 2 is connected to suction pipe;

[0044] The guide section includes a support base 4 fixed on the ship's deck 1 and a guide wheel 401 disposed at the top of the support base 4, wherein the wire rope 3 is slidably connected to the guide wheel 401; and

[0045] The anti-corrosion mechanism includes a support 5 fixed to the ship deck 1, a mud and sand loosening component installed on the support 5, and a cleaning component connected to the support 5 via a connecting frame 501.

[0046] The mud and sand loosening component is connected to the cleaning component, and a transmission component is provided between the mud and sand loosening component and the hydraulic winch 2.

[0047] Furthermore, the hydraulic winch 2 includes a bracket 201 fixed on the ship deck 1, a hydraulic motor 202 fixed on the bracket 201, and a drum 203 connected to the output shaft of the hydraulic motor 202 and rotatably connected to the bracket 201, with the wire rope 3 wound and connected to the drum 203.

[0048] Specifically, the dredger releases the wire rope 3 via the hydraulic winch 2, causing the wire rope 3 to lower the suction pipe. The dredger then uses its rake head to cut the bottom mud and, in conjunction with the suction pipe, sucks up the cut bottom mud. After the dredger finishes its suction work, the hydraulic winch 2 winds up the wire rope 3, causing the wire rope 3 to lift the suction pipe. When the hydraulic winch 2 winds up the wire rope 3, it drives the anti-corrosion mechanism through the transmission component, causing the mud loosening component to work in conjunction with the cleaning component. The mud loosening component brushes the mud and sand adhering to the outside of the wire rope 3, making it easier for the subsequent cleaning component to effectively clean the stubborn mud and sand adhering to the wire rope 3. This prevents mud and sand residue from remaining on the outside of the wire rope 3 during winding, which would lead to uneven winding of the wire rope 3, severe wear during winding, and thus extend the service life and winding effect of the wire rope 3.

[0049] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As a preferred embodiment, based on the above method, the silt loosening component further includes a first rotating ring 6 rotatably connected to the support 5, a first support plate 601 fixed on the first rotating ring 6, a loosening part 7 provided at the end of the first support plate 601 away from the first rotating ring 6, a second support plate 602 fixed on the first rotating ring 6, a second rotating ring 8 slidably connected at the end of the second support plate 602 away from the first rotating ring 6, the loosening part 7 rotatably connected to the outside of the second rotating ring 8, a slider 6021 fixed at the end of the second support plate 602 away from the first rotating ring 6, and an annular groove 801 that cooperates with the slider 6021 is provided on the second rotating ring 8.

[0050] Furthermore, the loosening part 7 includes a sleeve 701 rotatably connected to the outside of the second rotating ring 8 and a loosening portion 702 evenly arranged on the outside of the sleeve 701 in a circular pattern. The inner side wall of the sleeve 701 is provided with a plurality of guide grooves 7011, and the outer side wall of the second rotating ring 8 is provided with a guide rod 802 that cooperates with the guide grooves 7011.

[0051] Furthermore, a third support plate 603 is fixedly mounted on the first rotating ring 6, and a secondary gear 6031 is rotatably connected to the third support plate 603. A main gear 604 that meshes with the secondary gear 6031 is rotatably connected inside the first rotating ring 6. A driven gear 803 that meshes with the secondary gear 6031 is provided on the second rotating ring 8, and a second gear ring 12 that meshes with the main gear 604 is fixedly mounted on the support 5.

[0052] Furthermore, the loosening section 702 includes a U-shaped plate 7021 fixed to the outside of the sleeve 701, a rotating shaft 7022 rotatably connected to the U-shaped plate 7021, a connecting roller 7023 disposed on the rotating shaft 7022, and a loosening brush 7024 disposed on the connecting roller 7023. The loosening section 7 also includes a first toothed ring 703 fixedly connected to the end of the first support plate 601 away from the first rotating ring 6. The first toothed ring 703 is coaxially disposed with the sleeve 701. The U-shaped plate 7021 is rotatably connected to the first toothed ring 703. A movable gear 704 that meshes with the first toothed ring 703 is disposed on the rotating shaft 7022.

[0053] Specifically, when the silt loosening assembly is working, the first rotating ring 6 rotates on the support 5. When the first rotating ring 6 rotates, it drives the loosening part 7 to rotate around the wire rope 3 through the first support plate 601, causing the loosening brush 7024 at the loosening part 7 to brush the wire rope 3 radially. When the first rotating ring 6 rotates, the main gear 604 meshes with the second gear ring 12, causing the main gear 604 to rotate and mesh with the auxiliary gear 6031. When the auxiliary gear 6031 rotates, it engages with the driven teeth on the outer side of the second rotating ring 8. The gear 803 meshes with the drive gear 803, causing the second rotating ring 8 to rotate relative to the first rotating ring 6. When the second rotating ring 8 rotates, it drives the guide rod 802 to move. The guide rod 802 engages with the guide groove 7011 on the inner wall of the sleeve 701, causing the sleeve 701 to rotate relative to the second rotating ring 8. The loosening brush 7024 on the outer side of the sleeve 701 brushes the wire rope 3 axially. Furthermore, when the sleeve 701 rotates relative to the second rotating ring 8, the U-shaped plate 7021 on the outer side of the sleeve 701... The movable gear 704 meshes with the first gear ring 703, causing the rotating shaft 7022 to drive the loosening brush 7024 to rotate via the connecting roller 7023. This ensures that each loosening brush 7024 on each connecting roller 7023 can contact the wire rope 3 at every point, achieving full contact between the wire rope 3 and the loosening brush 7024. This avoids the loosening brush 7024 constantly rubbing against the wire rope 3 at only one position, which would cause the loosening brush 7024 to wear out too quickly. This results in a shorter replacement cycle for the loosening brush 7024, effectively reducing the workload of the workers and extending the maintenance and replacement cycle of the mud and sand loosening components. It should be noted that, depending on the actual situation, a protective shell can be set at the first rotating ring 6 or the second rotating ring 8 to shield and protect the transmission structure components, preventing mud and sand from entering the transmission gears and affecting the transmission work between the structures. For example, an inverted conical shell can be set on the upper side of the second rotating ring 8 to guide the mud and sand that falls from the cleaning components.

[0054] Reference Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 10 and Figure 11As a preferred embodiment, based on the above method, the transmission assembly further includes a support plate 9 fixed on the support 5, a transmission rod 901 rotatably connected to the support plate 9, a connecting rod 10 parallel to the transmission rod 901 connected to the hydraulic winch 2, a synchronous pulley 11 provided on both the connecting rod 10 and the transmission rod 901, a synchronous belt provided between the two synchronous pulleys 11, a main bevel gear 902 connected to one end of the transmission rod 901, and a secondary bevel gear 605 meshing with the main bevel gear 902 provided on the first rotating ring 6.

[0055] Specifically, when the hydraulic winch 2 is working, it drives the connecting rod 10 to rotate. The connecting rod 10 drives the transmission rod 901 to rotate via the synchronous pulley 11 and the synchronous belt. When the transmission rod 901 rotates, it drives the main bevel gear 902 to mesh with the secondary bevel gear 605 at the top of the first rotating ring 6, thereby causing the secondary bevel gear 605 to drive the first rotating ring 6 to rotate, thus enabling the mud and sand loosening component to work. It should be noted that the synchronous pulley 11 connected to the connecting rod 10 is set as a unidirectional rotating pulley, including a driving pulley fixedly connected to the hydraulic winch 2 and a driven pulley rotatably connected to the outside of the driving pulley. An elastic snap-fit ​​structure is provided between the driving pulley and the driven pulley, such as... Figure 11 This is existing technology and will not be elaborated on here. When the hydraulic winch 2 releases the wire rope 3, the transmission rod 901 will not rotate. During the lowering of the wire rope 3, the loosening brush 7024 only rotates while in contact with the wire rope 3.

[0056] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 , Figure 10 and Figure 11 As a preferred embodiment, based on the above method, the cleaning assembly further includes a working cylinder 13 fixedly connected to the connecting frame 501, a piston 131 slidably connected inside the working cylinder 13, an eccentric rod 14 fixedly provided on the transmission rod 901, a collar 141 sleeved on the eccentric rod 14, a push rod 142 fixedly provided on the collar 141, and a slide rod 143 connected to the piston 131 at the end of the push rod 142 away from the collar 141. The slide rod 143 is slidably connected to the working cylinder 13.

[0057] Furthermore, there are two pistons 131, which divide the working cylinder 13 into an oil chamber, an air chamber, and a liquid chamber. The air chamber is equipped with an air inlet valve and an air outlet valve. The air chamber is connected to an air jet ring 132 sleeved on the outside of the wire rope 3 through the air outlet valve. The liquid chamber is equipped with an inlet valve and an outlet valve. The liquid chamber is connected to an inlet pipe 133 through the inlet valve. The end of the inlet pipe 133 away from the working cylinder 13 is connected to a water storage tank 134 fixed on the support 5. The liquid chamber is connected to a spray ring 135 sleeved on the outside of the wire rope 3 through the outlet valve and a connecting pipe. The oil chamber is equipped with an oil inlet valve and an oil outlet valve. The oil chamber is connected to an oil inlet pipe 136 through the oil inlet valve. The end of the oil inlet pipe 136 away from the working cylinder 13 is connected to an oil storage tank 137 located on the upper side of the water storage tank 134. The oil chamber is connected to an oil spray ring 138 sleeved on the outside of the wire rope 3 through the oil outlet valve and a connecting pipe. The oil spray ring 138 is connected to the support 4.

[0058] Specifically, when the hydraulic winch 2 winds up the wire rope 3, the transmission rod 901 drives the eccentric rod 14 to rotate. When the eccentric rod 14 rotates, it drives the slide rod 143 to slide up and down at the bottom of the working drum 13 through the collar 141 and the push rod 142. When the slide rod 143 slides, it drives the two pistons 131 to slide inside the working drum 13, causing the oil chamber, air chamber and liquid chamber to be intermittently drawn in. As the wire rope 3 is continuously wound up, the wire rope 3 passes through the spray ring 135, the air jet ring 132 and the oil spray ring 138 in sequence, so that the wound wire rope 3 is sprayed by the spray ring 135. The wire rope 3 is rinsed with clean water, which washes away the loose mud and sand on the outside. Then, the air jet ring 132 blows away the water droplets remaining on the outside of the wire rope 3 during rinsing and dries it. The piston 131 slides back and forth frequently in the working cylinder 13, generating heat through friction. The working cylinder 13 preheats the extracted air to ensure the drying effect of the wire rope 3. An electric heating element can also be installed in the working cylinder 13 to heat the extracted air. The oil spraying ring 138 sprays anti-rust oil onto the dried wire rope 3 to achieve the maintenance work of the wire rope 3 during the winding process.

[0059] This invention also discloses a method for lifting the suction pipe of a trailing suction hopper dredger, which involves using a lifting device for the suction pipe of a trailing suction hopper dredger, and includes the following steps:

[0060] S1: The dredger releases the wire rope 3 through the hydraulic winch 2, which lowers the suction pipe and rake head. The dredger cuts the bottom mud with the rake head and sucks up the cut bottom mud with the suction pipe.

[0061] S2: After the dredger finishes suctioning the mud, the hydraulic winch 2 winds up the wire rope 3, causing the wire rope 3 to lift the suction pipe. The wire rope 3, which is being wound up, passes through the second rotating ring 8. When the hydraulic winch 2 is running, it drives the transmission component to work. The transmission component drives the mud and sand loosening component to move. The mud and sand loosening component drives the loosening part 7 to rotate around the wire rope 3, so that the second rotating ring 8, together with the loosening brush 7024, brushes the mud and sand attached to the outside of the wire rope 3.

[0062] S3: As the wire rope 3 is continuously wound up, it passes through the spray ring 135, the air spray ring 132, and the oil spray ring 138 in sequence. The wire rope 3 is then rinsed by the clean water in the spray ring 135, which washes away the loose mud and sand on the outside of the wire rope 3. Subsequently, the air spray ring 132 blows away the water droplets remaining on the outside of the wire rope 3 during rinsing and dries it. The oil spray ring 138 sprays anti-rust oil onto the dried wire rope 3, thus achieving the maintenance of the wire rope 3 during the winding process.

[0063] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A suction pipe lifting device for a trailing suction hopper dredger, comprising a hydraulic winch (2) mounted on the deck (1) of the vessel, characterized in that, Also includes: A wire rope (3) is provided, one end of which is wound around and connected to a hydraulic winch (2), and the other end of which is away from the hydraulic winch (2) is connected to a suction pipe. The guide section includes a support base (4) fixed on the ship's deck (1) and a guide wheel (401) disposed at the top of the support base (4), wherein the wire rope (3) is slidably connected to the guide wheel (401); and The anti-corrosion mechanism includes a support (5) fixed to the ship deck (1), a mud and sand loosening component set on the support (5), and a cleaning component connected to the support (5) via a connecting frame (501). The mud and sand loosening component is connected to the cleaning component, and a transmission component is provided between the mud and sand loosening component and the hydraulic winch (2). The silt loosening component includes a first rotating ring (6) rotatably connected to a support (5), a first support plate (601) fixedly mounted on the first rotating ring (6), a loosening part (7) provided at the end of the first support plate (601) away from the first rotating ring (6), a second support plate (602) fixedly mounted on the first rotating ring (6), a second rotating ring (8) slidably connected at the end of the second support plate (602) away from the first rotating ring (6), the loosening part (7) rotatably connected to the outside of the second rotating ring (8), a slider (6021) fixedly mounted at the end of the second support plate (602) away from the first rotating ring (6), and an annular groove (801) that cooperates with the slider (6021) on the second rotating ring (8). The loosening part (7) includes a sleeve (701) rotatably connected to the outside of the second rotating ring (8) and a loosening part (702) evenly arranged on the outside of the sleeve (701) in a circular pattern. The inner side wall of the sleeve (701) is provided with a plurality of guide grooves (7011), and the outer side wall of the second rotating ring (8) is provided with a guide rod (802) that cooperates with the guide grooves (7011). A third support plate (603) is fixedly provided on the first rotating ring (6), and a secondary gear (6031) is rotatably connected on the third support plate (603). A main gear (604) meshing with the secondary gear (6031) is rotatably connected inside the first rotating ring (6). A driven gear (803) meshing with the secondary gear (6031) is provided on the second rotating ring (8). A second toothed ring (12) meshing with the main gear (604) is fixedly provided on the support (5).

2. The sludge suction pipe lifting device for a trailing suction dredger according to claim 1, characterized in that, The loosening section (702) includes a U-shaped plate (7021) fixed to the outside of the sleeve (701), a rotating shaft (7022) rotatably connected to the U-shaped plate (7021), a connecting roller (7023) disposed on the rotating shaft (7022), and a loosening brush (7024) disposed on the connecting roller (7023). The loosening section (7) also includes a first toothed ring (703) fixedly connected to the end of the first support plate (601) away from the first rotating ring (6). The first toothed ring (703) is coaxially arranged with the sleeve (701). The U-shaped plate (7021) is rotatably connected to the first toothed ring (703). The rotating shaft (7022) is provided with a movable gear (704) that meshes with the first toothed ring (703).

3. The sludge suction pipe lifting device for a trailing suction dredger according to claim 2, characterized in that, The transmission assembly includes a support plate (9) fixed on a support (5), a transmission rod (901) rotatably connected to the support plate (9), a connecting rod (10) parallel to the transmission rod (901) connected to the hydraulic winch (2), a synchronous pulley (11) provided on both the connecting rod (10) and the transmission rod (901), a synchronous belt provided between the two synchronous pulleys (11), a main bevel gear (902) connected to one end of the transmission rod (901), and a secondary bevel gear (605) meshing with the main bevel gear (902) provided on the first rotating ring (6).

4. The sludge suction pipe lifting device for a trailing suction dredger according to claim 3, characterized in that, The cleaning assembly includes a working cylinder (13) fixedly connected to a connecting frame (501), a piston (131) slidably connected inside the working cylinder (13), an eccentric rod (14) fixedly mounted on the transmission rod (901), a collar (141) sleeved on the eccentric rod (14), a push rod (142) fixedly mounted on the collar (141), and a slide rod (143) connected to the piston (131) at one end of the push rod (142) away from the collar (141). The slide rod (143) is slidably connected to the working cylinder (13).

5. The sludge suction pipe lifting device for a trailing suction hopper dredger according to claim 4, characterized in that, Two pistons (131) are provided, dividing the working cylinder (13) into an oil chamber, an air chamber, and a liquid chamber. An inlet valve and an outlet valve are provided in the air chamber, and an air jet ring (132) sleeved on the outside of the wire rope (3) is connected to the air chamber via the outlet valve. An inlet valve and an outlet valve are provided in the liquid chamber, and an inlet pipe (133) is connected to the liquid chamber via the inlet valve. The end of the inlet pipe (133) away from the working cylinder (13) is connected to a water tank (134) fixed on the support (5). The liquid chamber is connected to the outlet valve... The liquid valve and connecting pipe are connected to a spray ring (135) sleeved on the outside of the wire rope (3). The oil chamber is equipped with an oil inlet valve and an oil outlet valve. The oil chamber is connected to an oil inlet pipe (136) through the oil inlet valve. The end of the oil inlet pipe (136) away from the working cylinder (13) is connected to an oil storage tank (137) set on the upper side of the water storage tank (134). The oil chamber is connected to a spray ring (138) sleeved on the outside of the wire rope (3) through the oil outlet valve and connecting pipe. The spray ring (138) is connected to the support base (4).

6. The sludge suction pipe lifting device for a trailing suction dredger according to claim 1, characterized in that, The hydraulic winch (2) includes a bracket (201) fixed on the ship deck (1), a hydraulic motor (202) fixed on the bracket (201), and a drum (203) connected to the output shaft of the hydraulic motor (202) and rotatably connected to the bracket (201). The wire rope (3) is wound and connected to the drum (203).

7. A method for lifting the suction pipe of a trailing suction hopper dredger, comprising lifting using the suction pipe lifting device of a trailing suction hopper dredger as described in claim 5, characterized in that... Includes the following steps: S1: The dredger releases the wire rope (3) through the hydraulic winch (2), so that the wire rope (3) lowers the suction pipe and the rake head. The dredger cuts the bottom mud through the rake head and sucks the cut bottom mud with the suction pipe. S2: After the dredger finishes suctioning the mud, the hydraulic winch (2) winds up the wire rope (3), causing the wire rope (3) to lift the suction pipe. The wire rope (3) in the winding passes through the second rotating ring (8). When the hydraulic winch (2) is running, it drives the transmission component to work. The transmission component drives the mud loosening component to move. The mud loosening component drives the loosening part (7) to rotate around the wire rope (3) in the winding, so that the second rotating ring (8) cooperates with the loosening brush (7024) to brush the mud attached to the outside of the wire rope (3). S3: As the wire rope (3) is continuously wound up, the wire rope (3) passes through the spray ring (135), the air spray ring (132) and the oil spray ring (138) in sequence, so that the wire rope (3) being wound up is rinsed by the clean water in the spray ring (135). The clean water washes away the loose mud and sand on the outside of the wire rope (3). Then the air spray ring (132) blows away the water droplets remaining on the outside of the wire rope (3) during rinsing and dries it. The oil spray ring (138) sprays anti-rust oil on the dried wire rope (3) to achieve the maintenance work of the wire rope (3) during the winding process.

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