An adjustable nozzle device for bow spraying of a trailing suction hopper ship.

Abstract

This invention discloses an adjustable nozzle device for bow spraying on a trailing suction hopper dredger, relating to the field of trailing suction hopper dredger technology. It includes a U-shaped support, an annular seat rotatably connected to the U-shaped support, a nozzle body rotatably connected to the annular seat, a first positioning component connecting the U-shaped support and the annular seat, and a second positioning component connecting the annular seat and the nozzle body. The annular seat is adapted to rotate along a first rotation on the U-shaped support, and the nozzle body is adapted to rotate along a second rotation within the annular seat. This design allows for multi-directional adjustment of the nozzle body, significantly expanding the effective working range of the bow spraying, precisely controlling the impact point distribution, effectively avoiding unevenness on the surface of the reclamation area, and eliminating the need for frequent vessel movement to adjust the bow spray angle. The bidirectional adjustment is easy to operate and has a fast response. The adjusted angle is ensured by the first and second positioning components to maintain the stable position of the annular seat and the mounting ring, providing strong locking stability and ensuring the accuracy and stability of angle adjustment even during long-term operation.

Description

Technical Field

[0001] This invention relates to the field of trailing suction hopper dredger technology, and specifically to an adjustable nozzle device for the bow spray of a trailing suction hopper dredger. Background Technology

[0002] Self-propelled trailing suction hopper dredgers, due to their ability to operate without anchoring and without obstructing navigation, have become the mainstay of the dredging industry, widely used in channel deepening and maintenance as well as large-scale reclamation projects. Among these, bow spraying is a key method for transporting large quantities of silt to shallow waters, shorelines, or open waters. It involves directly spraying slurry onto the target area (such as riverbanks, beaches, or proposed islands) through nozzles on the bow. This technology is particularly suitable for the initial stages of reclamation projects where laying underwater pipelines is not yet feasible, such as beach replenishment or the initial phase of island construction.

[0003] Traditional trailing suction hopper dredgers typically have fixed bow nozzles, meaning they remain stationary during operation. Consequently, the distance and position of the mud spray cannot be adjusted, resulting in mud and sand accumulating at a fixed point during unloading. When land reclamation projects require the trailing suction hopper bow nozzles to evenly spread unloading mud and sand using a fan-shaped spray pattern, this fixed-position spraying method leads to mud and sand accumulating into hills instead of being spread evenly as land. This necessitates bulldozing to level the hills or frequent vessel movement to adjust the bow nozzle angle. Therefore, fixed trailing suction hopper dredger bow nozzles have significant operational limitations. Summary of the Invention

[0004] Therefore, the present invention aims to solve the problem that the fixed trailing suction hopper bow spray has significant limitations in nozzle operation in the prior art, and thus provides an adjustable nozzle device for the trailing suction hopper bow spray.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: An adjustable nozzle device for bow spraying on a trailing suction hopper vessel includes: A U-shaped support is fixed to the bow spray platform of the trailing suction hopper dredger. A pair of first rotating rods are coaxially arranged on both sides of the U-shaped support. A first driving member is connected to one side of the U-shaped support to drive one of the first rotating rods to rotate around its own axis. An annular seat is fixedly connected between a pair of first rotating rods; a pair of second rotating rods are coaxially arranged on the inner side of the annular seat, and the axial direction of the pair of second rotating rods intersects the axial direction of the pair of first rotating rods; a second driving member is connected to the outer side of the annular seat to drive one of the second rotating rods to rotate around its own axis. The nozzle body is fixedly connected between a pair of second rotating rods, and the nozzle body can spray mud.

[0006] Furthermore, a mounting ring is fixedly connected between a pair of second rotating rods, and the outer periphery of the nozzle body is fixedly connected to the inner wall of the mounting ring.

[0007] Furthermore, a first positioning component for locking the positions of the annular seat and the mounting ring is provided between them; a second positioning component for locking the positions of the U-shaped support and the annular seat is provided between them; the first positioning component includes a first positioning rod slidably connected to the annular seat and an electric push rod for driving the first positioning rod to move; the second positioning component includes a second positioning rod slidably connected to the U-shaped support, and a transmission mechanism is connected between the second positioning rod and the first positioning rod. When the electric push rod drives the first positioning rod to slide to the position where the mounting ring is locked to the annular seat, the first positioning rod drives the second positioning rod to move to the position where the annular seat is locked to the U-shaped support through the transmission mechanism.

[0008] Furthermore, the annular seat has an annular cavity inside; the transmission mechanism includes an annular ring that is slidably connected to the annular cavity along the circumference of the annular seat, a first connecting plate with one end hinged to the first positioning rod and the other end hinged to the annular ring, and a second connecting plate with one end hinged to the annular ring and the other end hinged to the second positioning rod.

[0009] Furthermore, the outer periphery of the annular ring is provided with a plurality of first grooves, and the annular seat is provided with a plurality of second grooves that are respectively positioned corresponding to the plurality of first grooves. The first connecting plate passes through one pair of the corresponding first grooves and second grooves, and the second connecting plate passes through another pair of the corresponding first grooves and second grooves.

[0010] Furthermore, the outer peripheral wall of the mounting ring is provided with a plurality of first positioning holes spaced apart along the outer periphery of the second rotating rod. The first positioning rod can extend into the first positioning hole when sliding to lock the mounting ring. The inner side of the U-shaped support is provided with a plurality of second positioning holes spaced evenly along the circumference of the first rotating rod. The second positioning rod can extend into the second positioning hole when sliding to lock the annular seat.

[0011] Furthermore, both the first connecting plate and the second connecting plate are provided with a sliding groove extending along their own length direction, and both the first connecting plate and the second connecting plate are provided with a sealing plate slidably connected to the sliding groove; the sealing plate is slidably connected to the annular seat and is used to cover and close the second groove.

[0012] Furthermore, a support seat is provided on the outer side of the annular seat, the electric push rod is fixedly connected to the support seat, the driving end of the electric push rod passes through the support seat and is positioned towards the annular seat, and one of the first positioning rods is fixedly connected to the driving end of the electric push rod.

[0013] Furthermore, a connecting seat is fixed to the outer periphery of the first rotating rod, the second positioning rod is slidably connected to the connecting seat, and one end of the second connecting plate is hinged to the second positioning rod.

[0014] Furthermore, the feed end of the nozzle body is connected to a flexible hose via a first flange, and the end of the flexible hose away from the nozzle body is connected to the bow spray line on the ship via a second flange; the flexible hose is made of rubber, and the bow spray line is a steel mud pipe.

[0015] The technical solution of this invention has the following advantages: 1. The adjustable nozzle device for bow spraying of a trailing suction hopper dredger provided by the present invention uses a first rotating rod as the rotation center. The first rotating rod is driven to rotate by a first driving component, causing the annular seat to rotate along the first rotating rod and drive the nozzle body to swing up and down. Using a second rotating rod as the rotation center, the nozzle body can be driven to swing left and right by rotating along the second rotating rod by a second driving component. This allows for multi-directional adjustment of the nozzle body, significantly expanding the effective working range of bow spraying, accurately controlling the distribution of the landing point, effectively avoiding unevenness on the surface of the reclamation area, eliminating the need to use bulldozers to level the hill, and eliminating the need to frequently move the vessel to adjust the bow spraying angle. The bidirectional adjustment is easy to operate and has a fast response.

[0016] 2. The adjustable nozzle device for the bow spray of a trailing suction hopper dredger provided by the present invention includes a first positioning component between the annular seat and the mounting ring for locking their positions; and a second positioning component between the U-shaped support and the annular seat for locking their positions. The first positioning component includes a first positioning rod slidably connected to the annular seat and an electric push rod that drives the first positioning rod to move. The second positioning component includes a second positioning rod slidably connected to the U-shaped support. A transmission mechanism is connected between the second positioning rod and the first positioning rod. When the electric push rod drives the first positioning rod to slide to the position where the mounting ring is locked to the annular seat, the first positioning rod drives the second positioning rod to move to the position where the annular seat is locked to the U-shaped support via the transmission mechanism. With this configuration, the angle adjusted by the nozzle body rotating around the first rotating rod is locked by the first positioning rod, and the angle adjusted by the nozzle body rotating around the second rotating rod is locked by the second positioning rod. This ensures the stability of the positions of the annular seat and the nozzle body, providing strong locking stability and preventing angle deviation during prolonged operation. Even during extended operation, the accuracy and stability of angle adjustment are guaranteed. Simultaneously, when the first positioning rod is driven by the electric push rod to slide to the position where the mounting ring is locked in the annular seat, the first positioning rod drives the second positioning rod to move to the position where the annular seat is locked in the U-shaped support through the transmission mechanism. With only the electric push rod as the driving structure, the nozzle body can be synchronously locked in two different directions in the first and second rotating rods. Moreover, this synchronous locking can avoid the interference, jamming, unlocking and locking failures caused by errors, wear and different resistance in traditional dual drives.

[0017] 3. The adjustable nozzle device for the bow spray of a trailing suction hopper vessel provided by the present invention has an annular cavity inside the annular seat; the transmission mechanism includes an annular ring slidably connected to the annular cavity along the circumference of the annular seat, a first connecting plate with one end hinged to a first positioning rod and the other end hinged to the annular ring, and a second connecting plate with one end hinged to the annular ring and the other end hinged to a second positioning rod. With this configuration, when the electric push rod drives the first positioning rod to move, the first positioning rod drives the first connecting plate to move synchronously, the first connecting plate drives the annular ring to rotate synchronously within the annular cavity, the rotation of the annular ring drives the second connecting plate to move synchronously, and the second connecting plate drives the second positioning rod to move synchronously. This achieves simultaneous control of the first and second positioning rods by a single driving component, the electric push rod, to lock the nozzle body at angles in two dimensions.

[0018] 4. The adjustable nozzle device for the bow spray of a trailing suction hopper dredger provided by the present invention has multiple first grooves on the outer periphery of an annular ring, and multiple second grooves corresponding to the positions of the first grooves on the annular seat. A first connecting plate passes through one pair of corresponding first and second grooves, and a second connecting plate passes through another pair of corresponding first and second grooves. This arrangement guides the first and second connecting plates during sliding through the first and second grooves.

[0019] 5. The adjustable nozzle device for the bow spray of a trailing suction hopper vessel provided by the present invention has a plurality of first positioning holes spaced apart along the outer circumference of the mounting ring on its outer peripheral wall. The first positioning rods can extend into the first positioning holes during sliding to lock the mounting ring. The inner side of the U-shaped support has a plurality of second positioning holes spaced evenly along the circumference of the first rotating rod. The second positioning rods can extend into the second positioning holes during sliding to lock the annular seat. With this configuration, after adjusting the rotational position of the mounting ring, the first positioning rods are inserted into the corresponding first positioning holes to fix the relative position between the annular seat and the mounting ring, thereby ensuring the stability of the mounting ring position. After adjusting the rotational position of the annular seat, the second positioning rods are inserted into the corresponding second positioning holes to fix the relative position between the U-shaped support and the annular seat, thereby ensuring the stability of the annular seat position.

[0020] 6. The adjustable nozzle device for the bow spray of a trailing suction hopper vessel provided by the present invention includes a sliding groove extending along its length inside both the first and second connecting plates. A sealing plate slidably connected to the sliding groove is provided on both the first and second connecting plates. The sealing plate is slidably connected to the annular seat and serves to shield and seal the second groove. With this configuration, the sealing plate can slide on the corresponding sliding groove of the first or second connecting plate. Therefore, when the first and second connecting plates slide on the annular ring, they simultaneously slide relative to the corresponding sealing plate. The relatively static sealing plate forms a shielding protection on the second groove, preventing external impurities or mud from entering the annular seat and hindering the movement of the annular ring, effectively ensuring the normal operation of the locking mechanism.

[0021] 7. The adjustable nozzle device for the bow spray of a trailing suction hopper dredger provided by the present invention has a support base on the outer side of the annular seat. An electric push rod is fixedly connected to the support base, and the driving end of the electric push rod passes through the support base and faces the annular seat. One of the first positioning rods is fixedly connected to the driving end of the electric push rod. This configuration, by fixing the electric push rod to the support base, ensures the stability of the electric push rod during driving and guarantees the accuracy of angle adjustment.

[0022] 8. The adjustable nozzle device for the bow spray of a trailing suction hopper vessel provided by the present invention comprises a connecting seat fixed to the outer periphery of a first rotating rod, a second positioning rod slidably connected to the connecting seat, and one end of a second connecting plate hinged to the second positioning rod. With this configuration, when the first rotating rod drives the annular seat to rotate, the connecting seat rotates synchronously with the first rotating rod, and the connecting seat can drive the second positioning rod to rotate synchronously. The slidable connection between the second positioning rod and the connecting seat allows the connecting seat to provide positioning guidance for the second positioning rod. When the annular ring drives one end of the second positioning rod to rotate synchronously, the other end of the second positioning rod will slide within the connecting seat.

[0023] 9. The adjustable nozzle device for the bow spray of a trailing suction hopper dredger provided by the present invention has a flexible hose connected to the feed end of the nozzle body via a first flange, and the end of the flexible hose away from the nozzle body is connected to the bow spray pipeline on the ship via a second flange; the flexible hose is made of rubber, and the bow spray pipeline is a steel mud pipe. This configuration allows the flexible hose to move when the nozzle body rotates, improving the ease of adjusting the bow spray angle. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a front view of the adjustable nozzle device for the bow spray of a trailing suction hopper dredger provided by the present invention. Figure 2 A three-dimensional structural diagram of the adjustable nozzle device for the bow spray of a trailing suction hopper vessel provided by the present invention; Figure 3 This is a schematic diagram showing the connection relationship between the U-shaped support, the annular seat, and the mounting ring in this invention; Figure 4 A schematic diagram of the adjustable nozzle device for the bow spray of a trailing suction hopper dredger provided by the present invention; Figure 5 This is a schematic diagram showing the connection relationship between the first positioning rod and the sealing plate in this invention; Figure 6 This is a schematic diagram of the structure of the annular seat and the annular ring in this invention; Figure 7 This is a cross-sectional view of the adjustable nozzle device for the bow spray of a trailing suction hopper vessel provided by the present invention. Explanation of reference numerals in the attached drawings: 1. U-shaped support; 2. First rotating rod; 31. First driving component; 32. Second driving component; 4. Annular seat; 5. Second rotating rod; 501. Mounting ring; 6. Support seat; 7. Nozzle body; 8. Electric push rod; 801. First positioning rod; 9. First positioning hole; 10. Annular ring; 1001. First connecting plate; 1002. Second connecting plate; 1003. First groove; 11. Connecting seat; 111. Second positioning rod; 12. Second positioning hole; 13. Second groove; 14. Sliding groove; 15. Sealing plate; 151. Sliding block; 16. Flexible hose; 17. Bow spray line. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] like Figures 1-7 An adjustable nozzle device for the bow spray of a trailing suction hopper dredger is shown, comprising a U-shaped support 1, an annular seat 4, and a nozzle body 7. Specifically, the U-shaped support 1 is fixed to the bow spray platform of the trailing suction hopper dredger. A pair of first rotating rods 2 are coaxially arranged on both sides of the U-shaped support 1. A first driving member 31 for driving one of the first rotating rods 2 to rotate around its own axis is connected to one side of the U-shaped support 1. The annular seat 4 is fixedly connected between the pair of first rotating rods 2. A pair of second rotating rods 5 are coaxially arranged on the inner side of the annular seat 4, and the axial direction of the pair of second rotating rods 5 intersects with the axial direction of the pair of first rotating rods 2. A second driving member 32 for driving one of the second rotating rods 5 to rotate around its own axis is connected to the outer side of the annular seat 4. The nozzle body 7 is fixedly connected between the pair of second rotating rods 5 and can spray mud.

[0031] This adjustable nozzle device for the bow spray of a trailing suction hopper vessel uses a first rotating rod 2 as the rotation center. The first driving component 31 drives the first rotating rod 2 to rotate, causing the annular seat to rotate along the first rotating rod 2 and drive the nozzle body 7 to swing up and down. Using a second rotating rod 5 as the rotation center, the second driving component 32 drives the nozzle body 7 to rotate along the second rotating rod 5, which can drive the nozzle body to swing left and right. This allows for multi-directional adjustment of the nozzle body 7, significantly expanding the effective working range of the bow spray, accurately controlling the distribution of the landing point, effectively avoiding unevenness on the surface of the reclamation area, eliminating the need to use bulldozers to level the hill, and eliminating the need to frequently move the vessel to adjust the bow spray angle. The bidirectional adjustment is easy to operate and has a fast response.

[0032] In this embodiment, as Figure 1 As shown, the feed end of the nozzle body 7 is connected to a flexible hose 16 via a first flange, and the end of the flexible hose 16 away from the nozzle body 7 is connected to the bow spray line 17 on the ship via a second flange. The flexible hose 16 is made of rubber, and the bow spray line 17 is a steel mud pipe. This arrangement allows the flexible hose 16 to move when the nozzle body 7 rotates, improving the ease of adjusting the bow spray angle.

[0033] In this embodiment, as Figure 2 , Figure 3 , Figure 4 As shown, a mounting ring 501 is fixedly connected between a pair of second rotating rods 5, and the outer periphery of the nozzle body 7 is fixedly connected to the inner wall of the mounting ring 501. Specifically, first rotating rods 2 are connected between both sides of the U-shaped support 1 and both sides of the annular seat 4. A first driving member 3 is connected to the first side of the U-shaped support 1, and the drive shaft of the first driving member 31 is connected to the first rotating rod 2 on the first side of the U-shaped support 1. Second rotating rods 5 are connected between both ends of the annular seat 4 and the mounting ring 501. A second driving member 32 is connected to the first end of the annular seat 4, and the drive shaft of the second driving member 32 is connected to the second rotating rod 5 at the first end of the annular seat 4. With this configuration, adjusting the rotation of the U-shaped support 1 by the first driving member 31 can drive the annular seat 4, the mounting ring 501, and the nozzle body 7 to rotate synchronously. Adjusting the rotation by the second driving member 32 can drive the mounting ring 501 and the nozzle body 7 to rotate synchronously. Adjusting the rotation by the first driving member 31 and the second driving member 32 can improve the adjustment accuracy.

[0034] Specifically, such as Figures 1-5 As shown, the first driving component 31 and the second driving component 32 are respectively fixed to both ends of the U-shaped support 1, and angle encoders are connected to both the first driving component 31 and the second driving component 32. With this configuration, the rotation angles of the first rotating rod 2 and the second rotating rod 5 can be recorded by the two angle encoders, enabling precise adjustment of the nozzle body 7's spray angle. Specifically, both the first driving component 31 and the second driving component 32 are hydraulic actuators.

[0035] In this embodiment, as Figures 2-5 As shown, a first positioning component for locking the positions of the annular seat 4 and the mounting ring 501 is provided between them; a second positioning component for locking the positions of the U-shaped support 1 and the annular seat 4 is provided between them; the first positioning component includes a first positioning rod 801 slidably connected to the annular seat 4 and an electric push rod 8 that drives the first positioning rod 801 to move; the second positioning component includes a second positioning rod 111 slidably connected to the U-shaped support 1, and a transmission mechanism is connected between the second positioning rod 111 and the first positioning rod 801. When the electric push rod 8 drives the first positioning rod 801 to slide to the position where the mounting ring 501 is locked to the annular seat 4, the first positioning rod 801 drives the second positioning rod 111 to move to the position where the annular seat 4 is locked to the U-shaped support 1 through the transmission mechanism. With this configuration, the angle of the nozzle body 7 after rotation around the first rotating rod 2 is locked by the first positioning rod 801, and the angle of the nozzle body 7 after rotation around the second rotating rod 5 is locked by the second positioning rod 111. This ensures the stable position of the annular seat 4 and the nozzle body 7, with strong locking stability. It prevents angle deviation due to long-term operation and ensures the accuracy and stability of angle adjustment even during long-term operation. At the same time, in conjunction with the first driving component 31 and the second driving component 32, it can achieve rigid locking of the directional angle of the nozzle body 7, resist the lateral impact torque of mud on the nozzle body 7, effectively reduce the load on the output shaft of the driving component, ensure the stable operation of the nozzle spraying, and improve the service life of the device. Simultaneously, when the electric push rod 8 drives the first positioning rod 801 to slide to the position where the mounting ring 501 is locked to the annular seat 4, the first positioning rod 801 drives the second positioning rod 111 to move to the position where the annular seat 4 is locked to the U-shaped support 1 through the transmission mechanism. With only the electric push rod 8 as the driving structure, the synchronous angle locking of the nozzle body 7 in two different directions of the first rotating rod 2 and the second rotating rod 5 is achieved. Moreover, this synchronous locking can avoid the interference, jamming, unlocking and locking failures caused by the error, wear and different resistance of the traditional dual drive.

[0036] In this embodiment, as Figure 5 , Figure 6As shown, the annular seat 4 has an annular cavity inside; the transmission mechanism includes an annular ring 10 that slides circumferentially along the annular seat 4 and is connected to the annular cavity, a first connecting plate 1001 with one end hinged to the first positioning rod 801 and the other end hinged to the annular ring 10, and a second connecting plate 1002 with one end hinged to the annular ring 10 and the other end hinged to the second positioning rod 111. With this configuration, when the electric push rod 8 drives the first positioning rod 801 to move, the first positioning rod 801 drives the first connecting plate 1001 to move synchronously, and the first connecting plate 1001 will bring back the annular ring 10 to rotate synchronously in the annular cavity. The rotation of the annular ring 10 will drive the second connecting plate 1002 to move synchronously, and the second connecting plate 1002 will drive the second positioning rod 111 to move synchronously. In this way, the electric push rod 8, as a single driving component, can simultaneously control the first positioning rod 801 and the second positioning rod 111 to lock the nozzle body 7 at the angle in two dimensions.

[0037] In this embodiment, as Figure 5 , Figure 6 As shown, the outer periphery of the annular ring 10 has four first grooves 1003, and the annular seat 4 has four second grooves 13 corresponding to the four first grooves 1003. The first connecting plate 1001 passes through one pair of corresponding first grooves 1003 and second grooves 13, and the second connecting plate 1002 passes through the other pair of corresponding first grooves 1003 and second grooves 13. This arrangement allows the first and second connecting plates 1001 and 1002 to be guided during sliding by the first grooves 1003 and second grooves 13.

[0038] In this embodiment, as Figure 3 , Figure 5 As shown, the outer peripheral wall of the mounting ring 501 has a plurality of first positioning holes 9 spaced apart along the outer periphery of the second rotating rod 5. The first positioning rod 801 can extend into the first positioning hole 9 during sliding to lock the mounting ring 501. The inner side of the U-shaped support 1 has a plurality of second positioning holes 12 evenly spaced along the circumference of the first rotating rod 2. The second positioning rod 111 can extend into the second positioning hole 12 during sliding to lock the annular seat 4. With this configuration, after adjusting the rotational position of the mounting ring 501, the first positioning rod 801 is inserted into the corresponding first positioning hole 9 to fix the relative position between the annular seat 4 and the mounting ring 501, thus ensuring the stability of the mounting ring 501. After adjusting the rotational position of the annular seat 4, the second positioning rod 111 is inserted into the corresponding second positioning hole 12 to fix the relative position between the U-shaped support 1 and the annular seat 4, thus ensuring the stability of the annular seat 4.

[0039] In this embodiment, as Figure 6As shown, both the first connecting plate 1001 and the second connecting plate 1002 have internal grooves 14 extending along their length. Both the first connecting plate 1001 and the second connecting plate 1002 have sealing plates 15 slidably connected to the grooves 14. The sealing plates 15 are slidably connected to the annular seat 4 and are used to shield and seal the second groove 13. With this configuration, the sealing plates 15 can slide on the corresponding grooves 14 of the first connecting plate 1001 or the second connecting plate 1002. Therefore, when the first connecting plate 1001 and the second connecting plate 1002 slide on the annular ring 10, they also slide relative to the corresponding sealing plates 15. The relatively static sealing plates 15 form a shielding protection on the second groove 13, preventing external impurities or mud from entering the annular seat 4 and hindering the movement of the annular ring 10, effectively ensuring the normal operation of the locking mechanism. Specifically, a slider 151 is fixedly provided at the end of the sealing plate 15, and the slider 151 is slidably installed within the groove 14.

[0040] In this embodiment, as Figures 1-5 As shown, a support base 6 is provided on the outer side of the annular seat 4. The electric push rod 8 is fixedly connected to the support base 6. The driving end of the electric push rod 8 passes through the support base 6 and is positioned towards the annular seat 4. One of the first positioning rods 801 is fixedly connected to the driving end of the electric push rod 8. With this configuration, by fixing the electric push rod 8 to the support base 6, the stability of the electric push rod 8 during driving can be ensured, and the accuracy of angle adjustment can be guaranteed.

[0041] In this embodiment, as Figures 2-5 As shown, a connecting seat 11 is fixed to the outer periphery of the first rotating rod 2, and the second positioning rod 111 is slidably connected to the connecting seat 11. One end of the second connecting plate 1002 is hinged to the second positioning rod 111. With this configuration, when the first rotating rod 2 drives the ring seat 4 to rotate, the connecting seat 11 rotates synchronously with the first rotating rod 2, and the connecting seat 11 can drive the second positioning rod 111 to rotate synchronously. The slidable connection between the second positioning rod 111 and the connecting seat 11 allows the connecting seat 11 to provide positioning guidance for the second positioning rod 111. When the ring 10 drives one end of the second positioning rod 111 to rotate synchronously, the other end of the second positioning rod 111 will slide within the connecting seat 11.

[0042] In summary, this adjustable nozzle device for the bow spray of a trailing suction hopper vessel, with the first rotating rod 2 as the rotation center, is driven to rotate by the first driving component 31, causing the annular seat to rotate along the first rotating rod 2 and drive the nozzle body 7 to swing up and down. With the second rotating rod 5 as the rotation center, the nozzle body 7 can be driven to swing left and right by rotating along the second rotating rod 5 by the second driving component 32, thereby allowing for multi-directional adjustment of the nozzle body 7. This significantly expands the effective working range of the bow spray, precisely controls the distribution of the landing point, effectively avoids unevenness on the surface of the reclamation area, eliminates the need to use bulldozers to level the hill, and eliminates the need to frequently move the vessel to adjust the bow spray angle. The bidirectional adjustment is easy to operate and has a fast response.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An adjustable spud nozzle arrangement for a spud of a trailing suction hopper dredger, characterized in that, include: A U-shaped support (1) is fixed to the bow spray platform of the trailing suction hopper vessel. A pair of first rotating rods (2) are coaxially arranged on both sides of the U-shaped support (1). A first driving member (31) for driving one of the first rotating rods (2) to rotate around its own axis is connected to one side of the U-shaped support (1). A ring seat (4) is fixedly connected between a pair of first rotating rods (2); a pair of second rotating rods (5) are coaxially arranged on the inner side of the ring seat (4), and the axial direction of the pair of second rotating rods (5) intersects the axial direction of the pair of first rotating rods (2); a second driving member (32) is connected to the outer side of the ring seat (4) to drive one of the second rotating rods (5) to rotate around its own axis. The nozzle body (7) is fixedly connected between a pair of second rotating rods (5), and the nozzle body (7) can spray mud.

2. An adjustable spud nozzle arrangement for a spud bow of a trailing suction hopper dredger according to claim 1, characterized in that A mounting ring (501) is fixedly connected between a pair of second rotating rods (5), and the outer periphery of the nozzle body (7) is fixedly connected to the inner wall of the mounting ring (501).

3. An adjustable spud nozzle arrangement for a spud bow of a trailing suction hopper dredger according to claim 2, characterized in that A first positioning component for locking the positions of the two is provided between the annular seat (4) and the mounting ring (501); a second positioning component for locking the positions of the two is provided between the U-shaped support (1) and the annular seat (4); the first positioning component includes a first positioning rod (801) slidably connected to the annular seat (4) and an electric push rod (8) for driving the first positioning rod (801) to move; the second positioning component includes a second positioning rod (111) slidably connected to the U-shaped support (1), and a transmission mechanism is connected between the second positioning rod (111) and the first positioning rod (801). When the electric push rod (8) drives the first positioning rod (801) to slide to the position where the mounting ring (501) is locked to the annular seat (4), the first positioning rod (801) drives the second positioning rod (111) to move to the position where the annular seat (4) is locked to the U-shaped support (1) through the transmission mechanism.

4. The adjustable spud nozzle arrangement of a trailing suction hopper dredger according to claim 3, characterized in that The annular seat (4) has an annular cavity inside; the transmission mechanism includes an annular ring (10) that is slidably connected to the annular cavity along the circumference of the annular seat (4), with one end hinged to the first positioning rod (801) and the other end hinged to the first connecting plate (1001) of the annular ring (10), and a second connecting plate (1002) with one end hinged to the annular ring (10) and the other end hinged to the second positioning rod (111).

5. An adjustable spud nozzle arrangement for a spud bow of a trailing suction hopper dredger according to claim 4, characterized in that The outer periphery of the annular ring (10) is provided with a plurality of first grooves (1003), and the annular seat (4) is provided with a plurality of second grooves (13) that are respectively positioned corresponding to the plurality of first grooves (1003). The first connecting plate (1001) passes through one pair of the corresponding first grooves (1003) and second grooves (13), and the second connecting plate (1002) passes through another pair of the corresponding first grooves (1003) and second grooves (13).

6. An adjustable spud nozzle arrangement for a spud bow of a trailing suction hopper dredger according to claim 4, characterized in that The outer peripheral wall of the mounting ring (501) is provided with a plurality of first positioning holes (9) spaced apart along the outer periphery of the second rotating rod (5). When the first positioning rod (801) slides, it can extend into the first positioning hole (9) to lock the mounting ring (501). The inner side of the U-shaped support (1) is provided with a plurality of second positioning holes (12) spaced evenly along the circumference of the first rotating rod (2). When the second positioning rod (111) slides, it can extend into the second positioning hole (12) to lock the annular seat (4).

7. The adjustable spud nozzle arrangement of claim 5, wherein, The first connecting plate (1001) and the second connecting plate (1002) are both provided with a sliding groove (14) extending along their own length direction. The first connecting plate (1001) and the second connecting plate (1002) are both provided with a sealing plate (15) slidably connected to the sliding groove (14). The sealing plate (15) is slidably connected to the annular seat (4) and is used to cover and close the second groove (13).

8. The adjustable spud nozzle arrangement of claim 3, wherein, A support seat (6) is provided on the outside of the annular seat (4), and the electric push rod (8) is fixedly connected to the support seat (6). The driving end of the electric push rod (8) passes through the support seat (6) and is positioned towards the annular seat (4). One of the first positioning rods (801) is fixedly connected to the driving end of the electric push rod (8).

9. An adjustable spud nozzle arrangement for a spud bow of a trailing suction hopper dredger according to claim 4, characterized in that A connecting seat (11) is fixed to the outer periphery of the first rotating rod (2), the second positioning rod (111) is slidably connected to the connecting seat (11), and one end of the second connecting plate (1002) is hinged to the second positioning rod (111).

10. The adjustable nozzle device for the bow spray of a trailing suction hopper dredger according to claim 1, characterized in that, The feed end of the nozzle body (7) is connected to a flexible hose (16) via a first flange. The end of the flexible hose (16) away from the nozzle body (7) is connected to the bow spray line (17) on the ship via a second flange. The flexible hose (16) is made of rubber, and the bow spray line (17) is a steel mud pipe.

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