Rainbow blowing adjustable nozzle assembly of trailing suction dredger and bow spraying device and method

Abstract

The invention discloses a drag suction dredger rainbow blowing adjustable nozzle assembly and a bow spraying device and method, and belongs to the technical field of bow spraying. A rainbow blowing adjustable nozzle assembly of a trailing suction dredger comprises a nozzle part and a ball joint part used for connecting the nozzle part and a bow spraying pipeline on the dredger, and the ball joint part comprises a lower supporting frame, a lower supporting frame, a lower supporting frame, an upper supporting frame and a lower supporting frame, and one end of the lower supporting frame is connected with the bow spraying pipeline through a first flange; the upper supporting frame is fixedly connected to one side of the lower supporting frame, and a spherical groove is defined by the upper supporting frame and the lower supporting frame; the movable ball pipe comprises a reducer pipe and a ball body which are fixedly connected, the ball body is movably connected into the spherical groove, and the end, away from the ball body, of the reducer pipe is connected with the nozzle part through a second flange; by dynamically adjusting the spraying range of the nozzles, the slurry drop point can be flexibly changed, the effective operation range is remarkably expanded, drop point distribution is accurately controlled, the unevenness of the surface of a hydraulic reclamation area is effectively avoided, the flatness quality requirement is met, frequent ship displacement needed by drop point adjustment is reduced, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bow spraying, and in particular to a rainbow blowing adjustable nozzle assembly of a trailing suction hopper vessel, a bow spraying device and a method. Background Art

[0002] Self-propelled trailing suction hopper dredgers (TSDs) have become a staple in the dredging industry, operating without anchoring and without obstructing navigation. They are widely used in channel deepening and maintenance, as well as large-scale land reclamation projects. Bow jetting is a key method for these vessels to deliver large quantities of sediment to shallows, shores, or open waters. Using a nozzle mounted on the bow, slurry is sprayed directly onto the target area (such as a riverbank, beach, or proposed island). This technique is particularly suitable for initial land reclamation projects where laying of overwater pipelines is unavailable, such as during beach replenishment or the initial stages of island construction. Rainbow jetting is a highly efficient dredging and land reclamation technique. This involves a high-pressure jet system on a TSD, where a stream of sediment mixed with water is ejected parabolically through a nozzle onto the target area, creating a rainbow-like arc.

[0003] However, the traditional bow jetting process has significant limitations: its fixed nozzle angle results in a fixed spraying point range. This easily leads to uneven fill areas, making it difficult to meet the required flatness. Adjusting the spraying angle and distance to meet quality requirements currently relies primarily on frequent vessel movement. This method is not only complex and significantly increases crew workload, but also reduces construction efficiency due to the frequent relocation of work points, resulting in high overall operational costs. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a rainbow blowing adjustable nozzle assembly and a bow spray device and method for a trailing suction hopper vessel.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A trailing suction hopper ship rainbow blowing adjustable nozzle assembly comprises a nozzle portion and a ball joint portion for connecting the nozzle portion with a bow nozzle pipeline on the ship, the ball joint portion comprising: a lower support frame, one end of which is connected to the bow nozzle pipeline through a first flange; An upper support frame, wherein the upper support frame is fixedly connected to one side of the lower support frame and forms a spherical groove with the lower support frame; A movable ball tube, comprising a fixedly connected reducer and a sphere, the sphere being movably connected in the spherical groove, and an end of the reducer away from the sphere being connected to the nozzle portion via a second flange; and a cross frame, the cross frame being arranged on the outside of the upper support frame and movably connected to the lower support frame; Wherein, a first alignment component and a second alignment component for driving the nozzle part to move are arranged on the cross frame.

[0006] Preferably, the first alignment component includes a first hinge arm fixedly arranged on the cross frame, a first hydraulic cylinder rotatably connected to the first hinge arm through a pin shaft, a first connecting seat fixedly connected to the end of the piston rod of the first hydraulic cylinder, and a first ear plate fixedly arranged on the lower support frame and movably connected to the first connecting seat. First side arms are fixedly arranged on both sides of the lower support frame, and a first rotating shaft is rotatably connected between each first side arm and the cross frame.

[0007] Preferably, the second alignment component includes a second hinge arm fixedly arranged on the cross frame, a second hydraulic cylinder rotatably connected to the second hinge arm through a pin shaft, a second connecting seat fixedly connected to the end of the piston rod of the second hydraulic cylinder, and a second ear plate fixedly arranged on the variable diameter pipe and movably connected to the second connecting seat. Second side arms are fixedly arranged on both sides of the variable diameter pipe, and a second rotating shaft is rotatably connected between each second side arm and the cross frame.

[0008] Preferably, screw holes uniformly distributed in a circumferential manner are formed on the lower support frame and the upper support frame. A fastening bolt is arranged in each screw hole. A spherical sealing ring is arranged between the inner walls of the lower support frame and the upper support frame. A circular water seal pressing plate is fixedly connected to the side of the upper support frame away from the lower support frame through bolts. A water seal rubber ring for sealing the upper support frame and the sphere is arranged on the water seal pressing plate.

[0009] Preferably, the nozzle part includes a rotating joint fixedly connected to the variable diameter pipe through a second flange and a nozzle body rotatably connected to the rotating joint. The nozzle body is arranged in a conical shape, and an arc surface is formed at one end of the nozzle body away from the rotating joint.

[0010] Preferably, a gear transmission box is fixedly arranged on the rotating joint through a bracket. The input shaft and the output shaft of the gear transmission box are respectively connected with a driving motor and a transmission rod. A protective shell rotatably connected to the nozzle body is fixedly arranged on the outer side of the gear transmission box. The transmission rod is rotatably arranged on the protective shell. First connecting plates are arranged at both ends of the transmission rod. A second connecting plate is movably connected to one end of the first connecting plate away from the transmission rod. An arc-shaped baffle for blocking the opening of the nozzle body is movably connected to the end of the second connecting plate. The cross-sectional angle between the inner wall of the nozzle body and the arc-shaped baffle is at least greater than 135°.

[0011] Preferably, a support is fixedly arranged on the outer side of the nozzle body. An arc-shaped guide plate slidably connected to the arc-shaped baffle is fixedly arranged on the support. An arc-shaped guide groove is formed on the arc-shaped guide plate. A slider connected to the arc-shaped baffle is slidably connected in the arc-shaped guide groove.

[0012] Preferably, a worm is fixedly provided on the rod body of the transmission rod placed inside the protective housing, and a worm gear meshing with the worm is provided at the end of the nozzle body.

[0013] A bow spraying device includes a rainbow blowing adjustable nozzle assembly for a trailing suction hopper dredger, and further includes: a bow spraying platform arranged at the bow of the ship, the bow spraying pipeline is arranged on the bow spraying platform, the bow spraying pipeline includes a bow spraying pipeline fixedly arranged on the ship and a bow spraying elbow connected to the bow spraying pipeline, and the bow spraying elbow is connected to the lower support frame through a first flange.

[0014] The present invention also discloses a bow spraying method, which performs bow spraying work by applying a bow spraying device, including the following steps: S1: Installation and positioning: Fix the bow spraying elbow to the bow spraying pipeline on the bow spraying platform at the bow of the ship through a first flange, and the lower support frame is flange-connected to the bow spraying elbow; S2: Rough direction adjustment: Pitch adjustment: Start the first hydraulic cylinder of the first alignment component, the piston rod of the first hydraulic cylinder pushes the first ear plate, drives the cross frame to rotate around the first rotating shaft, and makes the sphere of the movable spherical tube swing in the spherical groove in a pitching manner to adjust the longitudinal angle of the nozzle part; Horizontal adjustment: Start the second hydraulic cylinder of the second alignment component, the piston rod of the second hydraulic cylinder pushes the second ear plate, and drives the reducing pipe to swing horizontally around the second rotating shaft to horizontally adjust the spraying direction of the nozzle body; S3: Jet dynamic adjustment: Start the driving motor, and drive the transmission rod to rotate through the gear transmission box; The first connecting plates at both ends of the transmission rod push the arc-shaped baffle through the second connecting plate, so that it slides along the arc-shaped guide groove of the arc-shaped guide plate, intermittently changes the nozzle opening of the nozzle body, and adjusts the mud flow rate and range; The worm on the transmission rod meshes with the worm gear to drive the nozzle body to rotate relative to the rotary joint, and adjusts the orientation of the arc-shaped nozzle to optimize the mud diffusion angle; S4: Sealing and maintenance: The spherical sealing ring and the water sealing rubber ring ensure the sealing performance when the sphere moves, and regularly check the fastening bolts to prevent leakage.

[0015] Compared with the prior art, the present invention provides a rainbow blowing adjustable nozzle assembly, a bow spraying device and a method for a trailing suction hopper dredger, and has the following beneficial effects: 1. The rainbow blowing adjustable nozzle assembly, bow spraying device and method for a trailing suction hopper dredger, by setting a hydraulic steering system, when the first steering assembly works, the first hydraulic cylinder expands and contracts to pull the lower support frame, making the cross frame rotate around the first rotating shaft, driving the overall pitching and deflection of the movable ball tube; when the second steering assembly works, the second hydraulic cylinder directly pushes the second ear plate on the variable diameter pipe, making the movable ball tube swing horizontally around the second rotating shaft, realizing the omnidirectional adjustment of the nozzle within the spherical hinge range, fundamentally breaking through the rigidity limitation of the traditional bow spraying process. The ship can achieve precise control of the mud landing point without displacement, the coverage area of a single positioning operation is increased by more than 40%, and at the same time, the mud flatness error is controlled within ±5 cm, significantly reducing the rework rate.

[0016] 2. The rainbow blowing adjustable nozzle assembly, bow spraying device and method for a trailing suction hopper dredger, by dynamically controlling the nozzle orifice of the nozzle body, when the transmission rod rotates, it drives the first connecting plate to rotate, and the first connecting plate drives the arc-shaped baffle to slide along the arc surface through the second connecting plate, realizing continuous adjustment of the nozzle orifice opening from 60% to 100% (section angle > 135°), controlling the mud flow rate and spraying distance. During this period, the worm and the worm gear are meshed and driven to drive the nozzle body to rotate, further changing the diffusion direction of the mud at the nozzle orifice, realizing the coordinated control of the mud flow rate, range and diffusion angle, and effectively improving the bow spraying efficiency and bow spraying effect.

[0017] 3. The rainbow blowing adjustable nozzle assembly, bow spraying device and method for a trailing suction hopper dredger, by enclosing and pressing the sphere by the upper / lower support frames, pre-tightening the fastening bolts, compensating for the wear gap with a spherical sealing ring, and squeezing the water sealing rubber ring by the water sealing pressing plate to form an end face seal, adapting to the universal movement of the sphere and ensuring the sealing performance during the bow spraying of the pipeline. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the bow spraying device of the present invention; Figure 2 is a schematic structural diagram of the ball joint part of the present invention; Figure 3 is Figure 2 the right view of; Figure 4 is a schematic sectional structural diagram of the ball joint part of the present invention; Figure 5 is a schematic structural diagram of the cross frame of the present invention; Figure 6 is a schematic structural diagram of the lower support frame of the present invention; Figure 7 is a schematic sectional structural diagram of the lower support frame of the present invention; Figure 8 is a schematic structural diagram of the movable ball tube of the present invention; Figure 9 is a schematic sectional structural diagram of the movable ball tube of the present invention; Figure 10 The structural schematic diagram of the upper support frame of the present invention; Figure 11 The sectional structural schematic diagram of the upper support frame of the present invention; Figure 12 The structural schematic diagram of the nozzle part of the present invention; Figure 13 The partial sectional structural schematic diagram of the nozzle part of the present invention; Figure 14 The sectional structural schematic diagram of the nozzle body of the present invention.

[0019] In the figure: 1. Nozzle part; 101. Rotating joint; 102. Nozzle body; 2. Bow spray pipeline; 201. Bow spray pipeline; 202. Bow spray elbow; 3. Ball joint part; 4. Lower support frame; 401. First side arm; 402. First rotating shaft; 5. First flange; 6. Upper support frame; 7. Fastening bolt; 8. Movable ball tube; 801. Reducing pipe; 8011. Second side arm; 8012. Second rotating shaft; 802. Sphere; 9. Second flange; 10. Cross frame; 11. First hinge arm; 111. First hydraulic cylinder; 112. First connecting seat; 113. First ear plate; 12. Second hinge arm; 121. Second hydraulic cylinder; 122. Second connecting seat; 123. Second ear plate; 13. Spherical sealing ring; 14. Water seal pressing plate; 141. Water seal rubber ring; 15. Gear transmission box; 16. Driving motor; 17. Protective shell; 171. Transmission rod; 172. First connecting plate; 173. Second connecting plate; 174. Arc-shaped baffle; 18. Support; 181. Arc-shaped guide plate; 182. Arc-shaped guide groove; 183. Slide block; 19. Worm; 191. Worm gear; 20. Bow spray platform. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] Such as Figures 1 to 4As shown in the figure, this embodiment proposes a rainbow blowing adjustable nozzle assembly for a trailing suction hopper dredger, belonging to the technical field of bow spraying. It includes a nozzle part 1 and a ball joint part 3 for connecting the nozzle part 1 to the bow spraying pipeline 2 on the ship. The ball joint part 3 includes: a lower support frame 4, an upper support frame 6, a movable ball tube 8, and a cross frame 10. One end of the lower support frame 4 is connected to the bow spraying pipeline 2 through a first flange 5; the upper support frame 6 is fixedly connected to one side of the lower support frame 4 and encloses a spherical groove with the lower support frame 4; the movable ball tube 8 includes a reduced-diameter tube 801 and a sphere 802 that are fixedly connected. The sphere 802 is movably connected in the spherical groove, and the end of the reduced-diameter tube 801 away from the sphere 802 is connected to the nozzle part 1 through a second flange 9; the cross frame 10 is arranged outside the upper support frame 6 and is movably connected to the lower support frame 4; among them, a first orientation adjustment component and a second orientation adjustment component for driving the movement of the nozzle part 1 are arranged on the cross frame 10; The nozzle part 1 is connected to the reduced-diameter tube 801 of the movable ball tube 8 through the second flange 9. The sphere 802 is constrained by the spherical groove enclosed by the upper support frame 6 and the lower support frame 4 to form a universal joint structure. The cross frame 10 serves as a hydraulic drive carrier, controlling the pitch angle through the first orientation adjustment component and the horizontal deflection through the second orientation adjustment component; the two groups of components are interconnected and work together to achieve precise and automatic control of the spraying angle; by adjusting the horizontal and vertical spraying angles, the spraying range is dynamically adjusted, the mud landing point can be flexibly changed, and the effective operation range is significantly expanded; the landing point distribution can be precisely controlled, effectively avoiding unevenness on the surface of the reclamation area and meeting the flatness quality requirements; reducing the frequent displacement of the ship required for adjusting the landing point, greatly improving the construction efficiency, and the automatic angle adjustment significantly reduces the operation burden of the crew.

[0023] As Figure 2 、 Figure 3 、 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10As shown, as a preferred embodiment, on the basis of the above method, further, the first steering component includes a first hinge arm 11 fixedly arranged on the cross frame 10, a first hydraulic cylinder 111 rotatably connected to the first hinge arm 11 through a pin shaft, a first connecting seat 112 fixedly connected to the end of the piston rod of the first hydraulic cylinder 111, and a first ear plate 113 fixedly arranged on the lower support frame 4 and movably connected to the first connecting seat 112. First side arms 401 are fixedly arranged on both sides of the lower support frame 4, and a first rotating shaft 402 is rotatably connected between each first side arm 401 and the cross frame 10; when the first hydraulic cylinder 111 operates to control the telescopic movement of its piston rod, by pushing the first ear plate 113, with the lower support frame 4 fixed, the first hydraulic cylinder 111 reacts on the cross frame 10, and the cross frame 10 rotates with the central axis of the first rotating shaft 402 at the connection with the left and right first side arms 401 as the hinge point center, so that the movable sphere tube 8 drives the nozzle part 1 to achieve a pitching motion.

[0024] As Figure 11 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, as a preferred embodiment, on the basis of the above method, further, the second steering component includes a second hinge arm 12 fixedly arranged on the cross frame 10, a second hydraulic cylinder 121 rotatably connected to the second hinge arm 12 through a pin shaft, a second connecting seat 122 fixedly connected to the end of the piston rod of the second hydraulic cylinder 121, and a second ear plate 123 fixedly arranged on the reducer pipe 801 and movably connected to the second connecting seat 122. Second side arms 8011 are fixedly arranged on both sides of the reducer pipe 801, and a second rotating shaft 8012 is rotatably connected between each second side arm 8011 and the cross frame 10; when the second hydraulic cylinder 121 operates, it controls the telescopic movement of its piston rod, and drives the reducer pipe 801 to swing around the second rotating shaft 8012 by pushing the second ear plate 123. The movable sphere tube 8 rotates in the spherical groove with the second rotating shaft 8012 at the connection of the upper and lower second side arms 8011 and the cross frame 10 as the hinge center, and further enables the movable sphere tube 8 to drive the nozzle part 1 to achieve a horizontal deflection motion.

[0025] As Figure 11As shown, as a preferred embodiment, on the basis of the above method, further, the lower support frame 4 and the upper support frame 6 are provided with screw holes evenly distributed in a circle. A fastening bolt 7 is arranged in each screw hole. A spherical sealing ring 13 is arranged between the inner walls of the lower support frame 4 and the upper support frame 6. One side of the upper support frame 6 away from the lower support frame 4 is fixedly connected with a circular water seal pressing plate 14 through bolts. A water seal rubber ring 141 for sealing the upper support frame 6 and the sphere 802 is arranged on the water seal pressing plate 14; the sphere 802 is surrounded and pressed by the upper support frame 6 and the lower support frame 4, the fastening bolt 7 is pre-tightened, the spherical sealing ring 13 compensates for the wear gap, and the water seal pressing plate 14 presses the water seal rubber ring 141 to form an end face seal, adapting to the universal movement of the sphere 802, ensuring the sealing performance during the bow jet of the pipeline, and further ensuring the bow jet effect.

[0026] As Figure 4 , Figure 12 and Figure 13 As shown, as a preferred embodiment, on the basis of the above method, further, the nozzle part 1 includes a rotary joint 101 fixedly connected to the reduced-diameter pipe 801 through a second flange 9 and a nozzle body 102 rotatably connected to the rotary joint 101. The nozzle body 102 is arranged in a conical shape. An arc surface is provided at one end of the nozzle body 102 away from the rotary joint 101. The conical design cooperates with the arc surface to optimize fluid diffusion.

[0027] Further, a gear transmission box 15 is fixedly arranged on the rotary joint 101 through a bracket. The input shaft and the output shaft of the gear transmission box 15 are respectively connected with a driving motor 16 and a transmission rod 171. A protective shell 17 rotatably connected to the nozzle body 102 is fixedly arranged on the outer side of the gear transmission box 15. The protective shell 17 serves as both the rotary support of the nozzle body 102 and the outer shell of the gear transmission box 15, realizing dust prevention and structural integration. The transmission rod 171 is rotatably arranged on the protective shell 17. First connecting plates 172 are arranged at both ends of the transmission rod 171. One end of the first connecting plate 172 away from the transmission rod 171 is movably connected with a second connecting plate 173. The end of the second connecting plate 173 is movably connected with an arc-shaped baffle 174 for blocking the opening of the nozzle body 102. The driving motor 16 drives the transmission rod 171 to rotate through the gear transmission box 15, and drives the arc-shaped baffle 174 to slide through the hinge structure of the first connecting plate 172 and the second connecting plate 173. The cross-sectional angle between the inner wall of the nozzle body 102 and the arc-shaped baffle 174 is at least greater than 135°. While avoiding the blockage of the flow channel, it can guide the mud flowing in the nozzle body 102 and avoid the arc-shaped baffle 174 from being impacted greatly.

[0028] Specifically, when the drive motor 16 is running, the power is transmitted to the transmission rod 171 through the gear transmission box 15, and the arc baffle 174 is driven to slide along the arc surface of the nozzle opening through the linkage action between the connecting plates, gradually reducing or expanding the nozzle cross-sectional area, realizing flow rate graded control, and then adjusting the injection distance of the mud. It should be noted that when the arc baffle 174 moves back and forth, the nozzle opening range should be between 60% and 100%, so as to avoid the blocking area being too large, resulting in a small nozzle opening, causing the mud to have a large impact on the arc baffle 174, causing damage to the arc baffle 174; Furthermore, a worm 19 is fixed on the rod body of the transmission rod 171 placed in the protective shell 17, and a worm wheel 191 engaged with the worm 19 is provided at the end of the nozzle body 102; when the transmission rod 171 rotates, the worm 19 is engaged with the worm wheel 191 to drive the nozzle body 102 to rotate, covering the fan-shaped area, further changing the diffusion direction of the mud at the nozzle, realizing the coordinated control of the mud flow rate, range, and diffusion angle, and effectively improving the bow spray efficiency and bow spray effect.

[0029] It should be noted that a support 18 is fixedly provided on the outside of the nozzle body 102, and an arc guide plate 181 is fixedly provided on the support 18, which is slidingly connected to the arc baffle 174. An arc guide groove 182 is provided on the arc guide plate 181, and a slider 183 connected to the arc baffle 174 is slidingly connected in the arc guide groove 182; the arc baffle 174 slides back and forth along the arc guide plate 181 under the drive of the connecting plate linkage mechanism. During this period, the slider 183 on the arc baffle 174 slides in the arc guide groove 182, thereby limiting the moving direction of the arc baffle 174 and improving its movement stability.

[0030] like Figure 14 Figure 1 As shown, this embodiment proposes a bow spray device, including a rainbow blowing adjustable nozzle assembly for a trailing suction hopper ship, and further including: a bow spray platform 20 arranged at the bow of the ship, a bow spray pipeline 2 arranged on the bow spray platform 20, the bow spray pipeline 2 including a bow spray line 201 fixed on the ship and a bow spray elbow 202 connected to the bow spray line 201, the bow spray elbow 202 is connected to the lower support frame 4 through a first flange 5; the bow spray platform 20 Fixed on the bow deck, the bow nozzle pipeline 201 is pre-buried along the hull structure and flange-connected to the ball joint 3 of the adjustable nozzle through the bow nozzle elbow 202 to form a closed mud delivery system. The bow nozzle elbow 202 adopts a 30°-45° bend angle design to reduce fluid resistance. The mud pump transports the dredged material through the bow nozzle pipeline 201 to the bow nozzle elbow 202, and distributes it to the nozzle part 1 through the ball joint 3 for bow spraying operation.

[0031] The present invention also discloses a bow spraying method, which is performed by applying a bow spraying device, and includes the following steps: S1: Installation and positioning: Fix the bow spray elbow 202 to the bow spray pipeline 201 of the bow spray platform 20 at the bow of the ship through the first flange 5, and flange-connect the lower support frame 4 to the bow spray elbow 202; S2: Coarse direction adjustment hydraulic control: Pitch adjustment: Start the first hydraulic cylinder 111 of the first steering component. The piston rod of the first hydraulic cylinder 111 pushes the first ear plate 113, driving the cross frame 10 to rotate around the first rotating shaft 402, so that the sphere 802 of the movable ball tube 8 swings in a pitching motion within the spherical groove, adjusting the longitudinal angle of the nozzle part 1; Horizontal adjustment: Start the second hydraulic cylinder 121 of the second steering component. The piston rod of the second hydraulic cylinder 121 pushes the second ear plate 123, driving the reduced-diameter pipe 801 to swing horizontally around the second rotating shaft 8012, transversely adjusting the spraying direction of the nozzle body 102; S3: Injection dynamic adjustment motor drive: Turn on the drive motor 16, which drives the transmission rod 171 to rotate through the gear transmission box 15; The first connecting plates 172 at both ends of the transmission rod 171 push the arc-shaped baffle 174 through the second connecting plate 173, causing it to slide along the arc-shaped guide groove 182 of the arc-shaped guide plate 181, intermittently changing the nozzle opening of the nozzle body 102, and adjusting the mud flow rate and range; The worm 19 on the transmission rod 171 meshes with the worm gear 191 to make the nozzle body 102 rotate relative to the rotary joint 101, adjusting the orientation of the arc-shaped nozzle, and optimizing the mud diffusion angle; S4: Sealing maintenance: The spherical sealing ring 13 and the water sealing rubber ring 141 ensure the sealing performance during the movement of the sphere 802. Regularly check the fastening bolts 7 to prevent leakage.

[0032] The schematic drawings in the specification of this application are only for illustrative purposes. The dimensions and shapes of the components shown are not actually limited, but only for a schematic representation. During the actual implementation process, the components can be reasonably configured and adjusted according to specific requirements and actual situations.

[0033] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A rainbow blowing adjustable nozzle assembly for a trailing suction hopper dredger, comprising a nozzle part (1) and a ball joint part (3) for connecting the nozzle part (1) to the bow spray pipeline (2) on the ship, characterized in that, The ball joint part (3) includes: A lower support frame (4), one end of the lower support frame (4) is connected to the bow spray pipeline (2) through a first flange (5); An upper support frame (6), the upper support frame (6) is fixedly connected to one side of the lower support frame (4) and encloses a spherical groove with the lower support frame (4); A movable ball tube (8), the movable ball tube (8) includes a reducing pipe (801) and a sphere (802) fixedly connected, the sphere (802) is movably connected in the spherical groove, and one end of the reducing pipe (801) away from the sphere (802) is connected to the nozzle part (1) through a second flange (9); And a cross frame (10), the cross frame (10) is arranged outside the upper support frame (6) and is movably connected to the lower support frame (4); Wherein, a first alignment component and a second alignment component for driving the nozzle part (1) to move are arranged on the cross frame (10).

2. The rainbow blowing adjustable nozzle assembly of a trailing suction hopper dredger according to claim 1, characterized in that, The first alignment component includes a first hinge arm (11) fixedly arranged on the cross frame (10), a first hydraulic cylinder (111) rotatably connected to the first hinge arm (11) through a pin shaft, a first connecting seat (112) fixedly connected to the end of the piston rod of the first hydraulic cylinder (111), and a first ear plate (113) fixedly arranged on the lower support frame (4) and movably connected to the first connecting seat (112). First side arms (401) are fixedly arranged on both sides of the lower support frame (4), and a first rotating shaft (402) is rotatably connected between each first side arm (401) and the cross frame (10).

3. The adjustable nozzle assembly of a trailing suction hopper dredger according to claim 2, wherein The second alignment component includes a second hinge arm (12) fixedly arranged on the cross frame (10), a second hydraulic cylinder (121) rotatably connected to the second hinge arm (12) through a pin shaft, a second connecting seat (122) fixedly connected to the end of the piston rod of the second hydraulic cylinder (121), and a second ear plate (123) fixedly arranged on the reducing pipe (801) and movably connected to the second connecting seat (122). Second side arms (8011) are fixedly arranged on both sides of the reducing pipe (801), and a second rotating shaft (8012) is rotatably connected between each second side arm (8011) and the cross frame (10).

4. The adjustable nozzle assembly of a trailing suction hopper dredger according to claim 3, characterized in that, Screw holes are formed in the lower support frame (4) and the upper support frame (6) and are evenly distributed in a circumferential manner. A fastening bolt (7) is arranged in each screw hole. A spherical sealing ring (13) is arranged between the inner walls of the lower support frame (4) and the upper support frame (6). A circular water seal pressing plate (14) is fixedly connected to the side of the upper support frame (6) away from the lower support frame (4) through bolts, and a water seal rubber ring (141) for sealing the upper support frame (6) and the sphere (802) is arranged on the water seal pressing plate (14).

5. The adjustable nozzle assembly of a trailing suction hopper dredger for rainbow blowing according to claim 4, characterized in that, The nozzle part (1) includes a rotating joint (101) fixedly connected to the reducing pipe (801) through a second flange (9) and a nozzle body (102) rotatably connected to the rotating joint (101). The nozzle body (102) is arranged in a conical shape, and an arc surface is formed at one end of the nozzle body (102) away from the rotating joint (101).

6. The adjustable nozzle assembly of a trailing suction hopper dredger according to claim 5, characterized in that, The rotating joint (101) is fixedly provided with a gear transmission box (15) through a bracket. An input shaft and an output shaft of the gear transmission box (15) are respectively connected with a driving motor (16) and a transmission rod (171). A protective shell (17) rotatably connected with the nozzle body (102) is fixedly arranged on the outer side of the gear transmission box (15). The transmission rod (171) is rotatably arranged on the protective shell (17). First connecting plates (172) are arranged at both ends of the transmission rod (171). One end of the first connecting plate (172) far away from the transmission rod (171) is movably connected with a second connecting plate (173). An arc-shaped baffle plate (174) for blocking the opening of the nozzle body (102) is movably connected to the end of the second connecting plate (173). The cross-sectional angle between the inner wall of the nozzle body (102) and the arc-shaped baffle plate (174) is at least greater than 135°.

7. A rainbow blowing adjustable nozzle assembly for a trailing suction hopper dredger according to claim 6, characterized in that, A support (18) is fixedly arranged on the outer side of the nozzle body (102). An arc-shaped guide plate (181) slidably connected with the arc-shaped baffle plate (174) is fixedly arranged on the support (18). An arc-shaped guide groove (182) is formed in the arc-shaped guide plate (181). A slider (183) connected with the arc-shaped baffle plate (174) is slidably connected in the arc-shaped guide groove (182).

8. A rainbow blowing adjustable nozzle assembly for a trailing suction hopper dredger according to claim 7, characterized in that, A worm (19) is fixedly arranged on the rod body of the transmission rod (171) placed inside the protective shell (17). A worm gear (191) meshing with the worm (19) is arranged at the end of the nozzle body (102).

9. A bow jetting device, comprising a rainbow blowing adjustable nozzle assembly of a trailing suction hopper dredger according to claim 8, characterized in that, Further comprising: A bow spray platform (20) arranged at the bow of the ship. The bow spray pipeline (2) is arranged on the bow spray platform (20). The bow spray pipeline (2) includes a bow spray pipeline (201) fixedly arranged on the ship and a bow spray elbow (202) connected with the bow spray pipeline (201). The bow spray elbow (202) is connected with the lower support frame (4) through a first flange (5).

10. A bow spraying method, which performs bow spraying work by applying a bow spraying device described in claim 9, is characterized in that, Including the following steps: S1: Installation and positioning: Fix the bow spray elbow (202) on the bow spray pipeline (201) of the bow spray platform (20) at the bow of the ship through the first flange (5). The lower support frame (4) is flange-connected with the bow spray elbow (202). S2: Rough direction adjustment: Pitch adjustment: Start the first hydraulic cylinder (111) of the first alignment component. The piston rod of the first hydraulic cylinder (111) pushes the first ear plate (113), driving the cross frame (10) to rotate around the first rotating shaft (402), so that the sphere (802) of the movable spherical tube (8) swings in the spherical groove in a pitch manner, adjusting the longitudinal angle of the nozzle part (1). Horizontal adjustment: Start the second hydraulic cylinder (121) of the second alignment component. The piston rod of the second hydraulic cylinder (121) pushes the second ear plate (123), driving the reduced-diameter pipe (801) to swing horizontally around the second rotating shaft (8012), horizontally adjusting the spraying direction of the nozzle body (102). S3: Spraying dynamic adjustment: Start the driving motor (16), and drive the transmission rod (171) to rotate through the gear transmission box (15). The first connecting plates (172) at both ends of the transmission rod (171) push the arc-shaped baffle plate (174) through the second connecting plate (173), so that it slides along the arc-shaped guide groove (182) of the arc-shaped guide plate (181), intermittently changing the nozzle opening of the nozzle body (102) to adjust the mud flow rate and range; The worm (19) on the transmission rod (171) meshes with and drives the worm gear (191), so that the nozzle body (102) rotates relative to the rotary joint (101) to adjust the orientation of the arc-shaped nozzle and optimize the mud diffusion angle; S4: Sealing maintenance: The spherical sealing ring (13) and the water sealing rubber ring (141) ensure the sealing performance when the sphere (802) moves. Regularly check the fastening bolts (7) to prevent leakage.

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