A twin-bow spraying device for a trailing suction hopper dredger

Abstract

This invention discloses a double bow spraying device for a trailing suction hopper dredger, belonging to the field of dredging technology. The double bow spraying device for a trailing suction hopper dredger includes a bow, on which an mounting plate is fixedly installed. The mounting plate is equipped with two sets of angle adjustment mechanisms, each connected to a spraying mechanism. Each angle adjustment mechanism includes a horizontal adjustment component for driving the spraying mechanism to rotate horizontally and a vertical adjustment component for driving the spraying mechanism to rotate vertically. The horizontal and vertical adjustment components are connected. An automatic pressurization component is provided on the spraying mechanism. This invention can automatically adjust the bow spraying range of the dredger, increasing the operational spraying range, reducing the workload of the crew, and greatly improving the quality and efficiency of bow spraying and dumping of dredged material by the trailing suction hopper dredger.

Description

Technical Field

[0001] This invention relates to the field of dredging technology, and more particularly to a double bow spraying device for a trailing suction hopper dredging vessel. Background Technology

[0002] Self-propelled trailing suction hopper dredgers have a wide range of applications in dredging operations and are the mainstay vessel type in the dredging industry. They do not require anchoring during dredging operations, thus avoiding obstruction of navigation. They are used not only for deepening and maintaining waterways but also extensively for large-scale land reclamation projects. Bow spraying is a technique used by trailing suction hopper dredgers to transport large quantities of sand to shallow waters or the shore. It is mainly used to transport large amounts of silt to riverbanks. In the initial stages of rapid land reclamation projects, when the conditions for laying waterborne pipelines are not available, bow spraying is suitable. The dredger directly sprays slurry into the work area through nozzles on its bow. Bow spraying is typically used for beach replenishment near the coast and can also be used to construct islands in open waters.

[0003] The nozzle angle of the bow sprayer is usually fixed, resulting in a fixed spraying range during operation. This is not suitable for certain operations that require specific filling areas, often causing the mud sprayed at the bow to accumulate into mountains. Adjusting the spraying angle and distance by moving the vessel is costly, and frequent changes also place a heavy operational burden on the crew. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a double bow spraying device for a trailing suction hopper dredger.

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

[0006] A double-bow spraying device for a trailing suction hopper dredger includes a bow, on which an mounting plate is fixedly installed. The mounting plate is provided with two sets of angle adjustment mechanisms. Each set of angle adjustment mechanisms is connected to a spraying mechanism. The angle adjustment mechanism includes a horizontal adjustment component for driving the spraying mechanism to rotate horizontally and a vertical adjustment component for driving the spraying mechanism to rotate vertically. The horizontal adjustment component and the vertical adjustment component are connected. An automatic pressurization component is provided on the spraying mechanism.

[0007] Preferably, the leveling assembly includes a first rotating rod and a second rotating rod rotatably mounted on a mounting plate. A drive motor for driving the first rotating rod to rotate is fixedly mounted on the bottom of the mounting plate. A first gear is mounted on the first rotating rod, and a second gear meshing with the first gear is mounted on the second rotating rod. The leveling assembly also includes a support fixed on the mounting plate. A rack plate is slidably connected to the support. A limit frame is provided on the outer side of the rack plate. A movable rod connected to the second gear is movably connected within the limit frame. A driven gear is meshed with the side of the rack plate away from the limit frame. A third rotating rod rotatably connected to the mounting plate is connected to the bottom of the driven gear. The spraying mechanism is mounted on the driven gear.

[0008] Preferably, the spraying mechanism includes a telescopically movable tube, with a connecting tube and a nozzle respectively connected to both ends of the movable tube. The nozzle is connected to the telescopic end of the movable tube. An ear plate is fixed on the driven gear, and a rotating shaft is rotatably connected between the ear plate and the movable tube.

[0009] Preferably, the second gear has a plurality of first screw holes, and a first screw is threaded into the first screw hole, and the first screw is fixedly connected to the movable rod.

[0010] Preferably, the vertical adjustment assembly includes two support plates fixed on the mounting plate, a reciprocating screw rotatably connected between the two support plates, a worm gear on the reciprocating screw, a worm gear meshing with the worm gear on the first rotating rod, a sleeve threaded to the outer side of the reciprocating screw, and a swing rod movably connected to the sleeve via a pin. The vertical adjustment assembly also includes several telescopic rods fixed on the mounting plate, a rotating rod movably connected between the end of the swing rod away from the sleeve and one of the telescopic rods, and the ends of the multiple telescopic rods away from the mounting plate connected to the same arc-shaped plate, which is slidably disposed with the spraying mechanism.

[0011] Preferably, the swing rod consists of two rods, one of which is rotatably provided with a second screw, and the other rod is provided with a second screw hole that cooperates with the second screw.

[0012] Preferably, the arc-shaped plate has a groove, and a slider is slidably connected in the groove, and the slider is fixedly connected to the nozzle.

[0013] Preferably, the automatic pressurization assembly includes a connecting seat connected to the nozzle, a sleeve fixedly mounted on the connecting seat, a piston slidably connected inside the sleeve, a first elastic element disposed between the piston and the inner wall of the sleeve, a connecting rod connected to the side of the piston away from the first elastic element, and a guide plate fixedly mounted on the connecting rod and sliding at the nozzle opening.

[0014] Preferably, an arc-shaped outer shell is fixed on the telescopic rod, an airbag is provided inside the arc-shaped outer shell, a lever is provided on the rotating rod to move against the airbag, and an air guide tube is connected between the airbag and the sleeve.

[0015] Preferably, the bow and mounting plate are provided with matching threaded holes, and bolts are movably connected in the threaded holes.

[0016] Compared with the prior art, the present invention provides a double bow spraying device for a trailing suction hopper dredger, which has the following beneficial effects:

[0017] 1. The dual bow spraying device of the trailing suction hopper dredger automatically changes the spraying angle of the spraying mechanism through the angle adjustment mechanism, which can automatically adjust the bow spraying range of the dredger, increase the operating spraying range, reduce the workload of the crew, and greatly improve the quality and efficiency of bow spraying and dumping of mud by the trailing suction hopper dredger.

[0018] 2. The double bow spraying device of the trailing suction hopper dredger, when adjusting the spraying angle of the spraying mechanism on the vertical plane through the vertical adjustment component, the automatic pressurization component can appropriately seal the nozzle opening, change the nozzle opening size, so that when the nozzle is raised, the nozzle opening can be reduced, thereby increasing the speed of the mud and sand sprayed from the nozzle, avoiding the nozzle opening from being raised and causing the spraying distance of the nozzle to be shortened, thus increasing the spraying distance of the nozzle to mud and sand, and ensuring the normal operation of the bow spraying work. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the angle adjustment mechanism of the present invention;

[0021] Figure 3 This is a cross-sectional structural diagram of the angle adjustment mechanism of the present invention;

[0022] Figure 4 For the present invention Figure 3 A partially enlarged structural diagram of section A in the middle;

[0023] Figure 5 For the present invention Figure 3 A partially enlarged structural diagram of section B in the middle;

[0024] Figure 6 This is a schematic diagram of the external structure of the second gear of the present invention;

[0025] Figure 7 This is a schematic diagram of the swing arm of the present invention;

[0026] Figure 8 This is a schematic cross-sectional view of the nozzle of the present invention;

[0027] Figure 9 This is a schematic diagram of the internal structure of the outer casing of the present invention.

[0028] In the diagram: 1. Bow; 2. Mounting plate; 3. Angle adjustment mechanism; 301. Drive motor; 4. Spraying mechanism; 401. Movable tube; 402. Connecting tube; 403. Nozzle; 5. First rotating rod; 501. First gear; 502. Worm gear; 6. Second rotating rod; 601. Second gear; 6011. First screw hole; 602. Movable rod; 6021. First screw; 7. Support; 701. Rack plate; 702. Limiting frame; 8. Third rotating rod; 801. Driven gear; 8011. Ear plate; 8012. Rotating shaft; 9. Support plate ; 901, reciprocating lead screw; 9011, worm gear; 902, sleeve; 903, swing rod; 9031, rod body; 9032, second screw; 9033, second threaded hole; 10, telescopic rod; 11, arc plate; 111, slide groove; 112, slider; 12, connecting seat; 121, sleeve; 122, piston; 123, first elastic element; 124, connecting rod; 125, guide plate; 13, arc-shaped outer shell; 131, airbag; 132, air guide pipe; 14, rotating rod; 141, lever plate; 15, threaded hole; 151, bolt. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Example:

[0033] Reference Figure 1 , Figure 2 and Figure 3 A double-bow spraying device for a trailing suction hopper dredger includes a bow 1, an mounting plate 2 fixedly installed on the bow 1, two sets of angle adjustment mechanisms 3 provided on the mounting plate 2, each set of angle adjustment mechanisms 3 connected to a spraying mechanism 4, the angle adjustment mechanism 3 including a horizontal adjustment component for driving the spraying mechanism 4 to rotate horizontally and a vertical adjustment component for driving the spraying mechanism 4 to rotate vertically, the horizontal adjustment component and the vertical adjustment component being connected, and an automatic pressurization component provided on the spraying mechanism 4.

[0034] Specifically, the traditional single bow spraying mechanism is designed as a double bow spraying mechanism to improve the bow spraying efficiency of the dredger. The spraying angle of the spraying mechanism 4 is automatically changed by the angle adjustment mechanism 3, which can automatically adjust the bow spraying range of the dredger. The spraying mechanism 4 is raised up and down during the reciprocating swing process, which increases the working spraying range, reduces the workload of the crew, and can greatly improve the quality and efficiency of bow spraying and dumping of mud by the trailing suction hopper dredger.

[0035] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As a preferred technical solution of the present invention, the horizontal adjustment assembly includes a first rotating rod 5 and a second rotating rod 6 rotatably mounted on the mounting plate 2. A drive motor 301 for driving the first rotating rod 5 to rotate is fixedly mounted on the bottom of the mounting plate 2. A first gear 501 is mounted on the first rotating rod 5, and a second gear 601 meshing with the first gear 501 is mounted on the second rotating rod 6. The horizontal adjustment assembly also includes a support 7 fixed on the mounting plate 2. A rack plate 701 is slidably connected to the support 7. A limit frame 702 is provided on the outer side of the rack plate 701. A movable rod 602 connected to the second gear 601 is movably connected inside the limit frame 702. A driven gear 801 is meshed with the side of the rack plate 701 away from the limit frame 702. A third rotating rod 8 rotatably connected to the mounting plate 2 is connected to the bottom of the driven gear 801. The spraying mechanism 4 is mounted on the driven gear 801.

[0036] Specifically, the drive motor 301 is controlled to operate, causing the output end of the drive motor 301 to drive the first rotating rod 5 to rotate. When the first rotating rod 5 rotates, the outer first gear 501 meshes with the second gear 601 on the second rotating rod 6, causing the second rotating rod 6 to drive the movable rod 602 to rotate. During the rotation of the movable rod 602, the limiting frame 702 moves back and forth, causing the limiting frame 702 to drive the rack plate 701 to move and mesh with the driven gear 801. The driven gear 801 drives the third rotating rod 8 to rotate. When the third rotating rod 8 rotates, it drives the spraying mechanism 4 to swing back and forth, increasing the spraying range of the spraying mechanism 4, so that the mud is evenly distributed in the designated area, improving the spraying effect.

[0037] Reference Figure 1 , Figure 2 and Figure 3 As a preferred technical solution of the present invention, the spraying mechanism 4 includes a telescopic movable tube 401, with a connecting tube 402 and a nozzle 403 respectively connected to both ends of the movable tube 401. The nozzle 403 is connected to the telescopic end of the movable tube 401. An ear plate 8011 is fixed on the driven gear 801, and a rotating shaft 8012 is rotatably connected between the ear plate 8011 and the movable tube 401.

[0038] Specifically, the spraying mechanism 4 is connected to the dredging vessel's discharge pipeline via the connecting pipe 402. The slurry in the mud chamber enters the connecting pipe 402 and the movable pipe 401 sequentially through the discharge pipeline and is sprayed out through the nozzle 403. The movable pipe 401 rotates on the driven gear 801 via the rotating shaft 8012.

[0039] Reference Figure 6 As a preferred technical solution of the present invention, the second gear 601 is provided with a plurality of first screw holes 6011, and the first screw 6021 is internally threaded to the first screw hole 6011. The first screw 6021 is fixedly connected to the movable rod 602.

[0040] Specifically, the movable rod 602 can be installed in different first screw holes 6011 on the second gear 601 through the first screw 6021, thereby adjusting the distance between the movable rod 602 and the central axis of the second gear 601, adjusting the movement range of the limit frame 702, and thus adjusting the left and right rotation amplitude of the spray mechanism 4. The operator can adjust the position of the movable rod 602 according to the actual spray range.

[0041] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As a preferred technical solution of the present invention, the vertical adjustment assembly includes two support plates 9 fixed on the mounting plate 2, a reciprocating screw 901 rotatably connected between the two support plates 9, a worm gear 9011 provided on the reciprocating screw 901, a worm 502 meshing with the worm gear 9011 provided on the first rotating rod 5, a sleeve 902 threadedly connected to the outer side of the reciprocating screw 901, and a swing rod 903 movably connected to the sleeve 902 through a pin. The vertical adjustment assembly also includes several telescopic rods 10 fixed on the mounting plate 2, a rotating rod 14 movably connected between the end of the swing rod 903 away from the sleeve 902 and one of the telescopic rods 10, and the ends of the multiple telescopic rods 10 away from the mounting plate 2 are connected to the same arc-shaped plate 11, which is slidably disposed with the spraying mechanism 4.

[0042] Furthermore, a groove 111 is provided on the arc plate 11, and a slider 112 is slidably connected in the groove 111. The slider 112 is fixedly connected to the nozzle 403.

[0043] Specifically, when the drive motor 301 drives the first rotating rod 5 to rotate, the worm gear 502 on the first rotating rod 5 meshes with the worm wheel 9011 on the reciprocating screw 901. The worm wheel 9011 drives the reciprocating screw 901 to rotate between the two support plates 9. When the reciprocating screw 901 rotates, the outer sleeve 902 moves axially back and forth. When the sleeve 902 moves away from the worm wheel 9011, the sleeve 902 pushes the telescopic rod 10 upward through the swing rod 903 to stretch it, causing the telescopic rod 10 to drive the arc plate 11 upward. The arc plate 11 moves upward, driving the nozzle 403 upward via the slider 112. As the nozzle 403 moves upward with the arc plate 11, it drives the movable tube 401 to rotate around the pivot 8012. During this process, the movable tube 401 is stretched, thereby raising the spray angle of the nozzle 403 and increasing the spray range. When the horizontal adjustment component drives the spray mechanism 4 to rotate, the nozzle 403 drives the slider 112 to slide in the groove 111. The slider 112 can be set in a dovetail shape to prevent the slider 112 from sliding out of the groove 111.

[0044] Reference Figure 7 As a preferred technical solution of the present invention, the swing rod 903 is composed of two rods 9031, one of which is rotatably provided with a second screw 9032, and the other rod 9031 is provided with a second screw hole 9033 that cooperates with the second screw 9032.

[0045] Specifically, by rotating the second screw 9032, the distance between the two rods 9031 is adjusted, which in turn changes the length of the swing rod 903, adjusts the lifting angle of the nozzle 403, and thus adjusts the spray distance.

[0046] Reference Figure 1 , Figure 2 , Figure 3, Figure 4 , Figure 5 , Figure 8 and Figure 9 As a preferred technical solution of the present invention, the automatic pressurization component includes a connecting seat 12 connected to the nozzle 403, a sleeve 121 fixedly provided on the connecting seat 12, a piston 122 slidably connected inside the sleeve 121, a first elastic element 123 provided between the piston 122 and the inner wall of the sleeve 121, a connecting rod 124 connected to the side of the piston 122 away from the first elastic element 123, and a guide plate 125 slidably mounted on the connecting rod 124 at the opening of the nozzle 403.

[0047] Furthermore, an arc-shaped outer shell 13 is fixed on the telescopic rod 10, an airbag 131 is provided inside the arc-shaped outer shell 13, a lever 141 is provided on the rotating rod 14 to move against the airbag 131, and an air guide tube 132 is connected between the airbag 131 and the sleeve 121.

[0048] Specifically, when the vertical adjustment component adjusts the spray angle of the spray mechanism 4 on the vertical plane, the swing rod 903 drives the lever 141 to rotate via the rotating rod 14. The lever 141 compresses the airbag 131 inside the arc-shaped outer shell 13. The air inside the airbag 131 is introduced into the sleeve 121 through the air guide pipe 132. The piston 122 moves upward under force and drives the guide plate 125 to slide into the nozzle 403 via the connecting rod 124. This can appropriately block the opening of the nozzle 403, change the size of the nozzle 403 opening, and reduce the opening of the nozzle 403 when the nozzle 403 is raised. This increases the speed of the mud and sand sprayed from the nozzle 403, and avoids the spray distance of the nozzle 403 becoming shorter due to the raising of the nozzle 403 opening. This improves the spray distance of the nozzle 403 on the mud and sand, and ensures the normal operation of the bow spraying work.

[0049] Reference Figure 1 As a preferred technical solution of the present invention, threaded holes 15 are provided on the bow 1 and the mounting plate 2, and bolts 151 are movably connected in the threaded holes 15.

[0050] Specifically, the bow 1 and the mounting plate 2 are connected by bolts 151, which facilitates quick assembly and disassembly of the device and improves work efficiency.

[0051] 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 double bow spraying device for a trailing suction hopper dredger, comprising a bow (1), characterized in that, An installation plate (2) is fixedly installed on the bow (1). Two sets of angle adjustment mechanisms (3) are provided on the installation plate (2). Each set of angle adjustment mechanisms (3) is connected to a jetting mechanism (4). The angle adjustment mechanism (3) includes a horizontal adjustment component for driving the jetting mechanism (4) to rotate horizontally and a vertical adjustment component for driving the jetting mechanism (4) to rotate vertically. The horizontal adjustment component and the vertical adjustment component are connected. An automatic pressurization component is provided on the jetting mechanism (4). The horizontal adjustment assembly includes a first rotating rod (5) and a second rotating rod (6) rotatably mounted on a mounting plate (2). A drive motor (301) for driving the first rotating rod (5) to rotate is fixed to the bottom of the mounting plate (2). A first gear (501) is mounted on the first rotating rod (5), and a second gear (601) meshing with the first gear (501) is mounted on the second rotating rod (6). The horizontal adjustment assembly also includes a support (7) fixed to the mounting plate (2). A rack plate (701) is slidably connected to the rack plate (701). A limit frame (702) is provided on the outside of the rack plate (701). A movable rod (602) connected to the second gear (601) is movably connected inside the limit frame (702). A driven gear (801) is meshed on the side of the rack plate (701) away from the limit frame (702). A third rotating rod (8) connected to the bottom of the driven gear (801) is rotatably connected to the mounting plate (2). The spraying mechanism (4) is set on the driven gear (801). The spraying mechanism (4) includes a telescopic movable tube (401), with a connecting tube (402) and a nozzle (403) connected to both ends of the movable tube (401), the nozzle (403) being connected to the telescopic end of the movable tube (401), and an ear plate (8011) fixed on the driven gear (801), with a rotating shaft (8012) rotatably connected between the ear plate (8011) and the movable tube (401). The vertical adjustment assembly includes two support plates (9) fixed on the mounting plate (2), and a reciprocating screw (901) is rotatably connected between the two support plates (9). A worm gear (9011) is provided on the reciprocating screw (901), and a worm (502) meshing with the worm gear (9011) is provided on the first rotating rod (5). A sleeve (902) is threadedly connected to the outside of the reciprocating screw (901), and a swing rod (903) is movably connected to the sleeve (902) through a pin. The vertical adjustment assembly also includes several telescopic rods (10) fixed on the mounting plate (2). A rotating rod (14) is movably connected between the end of the swing rod (903) away from the sleeve (902) and one of the telescopic rods (10). The ends of the multiple telescopic rods (10) away from the mounting plate (2) are connected to the same arc plate (11), and the arc plate (11) is slidably disposed with the spraying mechanism (4).

2. The double-bow spraying device of a trailing suction hopper dredger according to claim 1, characterized in that, The second gear (601) has a plurality of first screw holes (6011), and a first screw (6021) is internally threaded into the first screw hole (6011). The first screw (6021) is fixedly connected to the movable rod (602).

3. The double-bow spraying device of a trailing suction hopper dredger according to claim 2, characterized in that, The swing rod (903) consists of two rods (9031), one of which is rotatably provided with a second screw (9032), and the other rod (9031) is provided with a second screw hole (9033) that cooperates with the second screw (9032).

4. The double-bow spraying device of a trailing suction hopper dredger according to claim 3, characterized in that, The arc plate (11) is provided with a groove (111), and a slider (112) is slidably connected in the groove (111). The slider (112) is fixedly connected to the nozzle (403).

5. The double-bow spraying device of a trailing suction hopper dredger according to claim 4, characterized in that, The automatic pressurization assembly includes a connecting seat (12) connected to the nozzle (403), a sleeve (121) fixed on the connecting seat (12), a piston (122) slidably connected inside the sleeve (121), a first elastic element (123) provided between the piston (122) and the inner wall of the sleeve (121), a connecting rod (124) connected to the side of the piston (122) away from the first elastic element (123), and a guide plate (125) fixed on the connecting rod (124) and sliding at the opening of the nozzle (403).

6. The double-bow spraying device of a trailing suction hopper dredger according to claim 5, characterized in that, An arc-shaped outer shell (13) is fixed on the telescopic rod (10), and an airbag (131) is provided inside the arc-shaped outer shell (13). A lever (141) is provided on the rotating rod (14) to move against the airbag (131). An air guide tube (132) is connected between the airbag (131) and the sleeve (121).

7. The double-bow spraying device of a trailing suction hopper dredger according to claim 1, characterized in that, The bow (1) and mounting plate (2) are provided with matching threaded holes (15), and bolts (151) are movably connected in the threaded holes (15).

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