A large-scale dredge suction ship high-efficiency dredging overflow device

Abstract

The application discloses a large-scale drag suction ship high-efficiency dredging overflow device and particularly relates to the field of dredging overflow devices, which comprises a cylinder, the outer surface bottom end of the cylinder is provided with a mounting bracket, the mounting bracket is sleeved on the outer surface of the cylinder, the top end of the cylinder is fixedly provided with an input pipe, the bottom end of the cylinder is fixedly provided with an output pipe, the output pipe, the input pipe and the cylinder are all detachable structures, the top of the input pipe is provided with a top bracket, and the top bracket is fixedly installed at the top end of the inner wall of a mud tank. The application sets an inner disc in the baffle mechanism, adjusts the angle of the inner disc, controls the size of the output through hole on the baffle, adjusts the flow rate of the mixture overflow in the mud tank, and at the same time, the baffle mechanism can be opened after the complete deposition of the silt, the overflow of the river water in the mud tank is increased, the overflow efficiency is improved, and the dredging overflow device is adjusted according to the corresponding conditions, so that the practicability of the dredging overflow device is improved.

Description

Technical Field

[0001] This invention relates to the field of dredging overflow devices, and more specifically, to a high-efficiency dredging overflow device for a large trailing suction hopper dredger. Background Technology

[0002] Dredging overflow devices are mainly used on trailing suction hopper dredgers and are installed inside the mud hopper. They increase the concentration inside the hopper by overflowing a low-concentration mixture, thereby adjusting the loading capacity of the mud hopper.

[0003] Existing dredging overflow devices are not easy to regulate the overflow velocity when overflowing low-concentration mixtures. If the silt in the silt tank has not settled well, a large amount of silt may be carried out if the flow velocity is too fast, thereby reducing the silt collection. Some existing trailing suction hopper dredging overflow devices use suction pumps of different power, while others use two filter discs with variable orifice diameters that can be staggered to achieve flow velocity regulation. However, the filter discs of this method are prone to silt leakage and have the drawback of insufficient adjustment gradient when adjusting the orifice diameter. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a high-efficiency dredging overflow device for large trailing suction hopper vessels. By setting an inner plate within the baffle mechanism and adjusting the angle of the inner plate, the size of the output through-hole on the baffle is controlled, thereby regulating the flow rate of the mixture overflowing from the mud tank. Simultaneously, after the silt has completely settled, the baffle mechanism can be opened to increase the overflow of river water from the mud tank, thereby improving the overflow efficiency. Adjustments can be made according to the corresponding conditions, increasing the practicality of the dredging overflow device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency dredging overflow device for a large trailing suction hopper, comprising a cylinder, an installation frame provided at the bottom of the outer surface of the cylinder, the installation frame being sleeved on the outer surface of the cylinder, an input pipe fixedly installed at the top of the cylinder, an output pipe fixedly installed at the bottom of the cylinder, the output pipe, the input pipe and the cylinder being detachable, a top frame provided above the input pipe, the top frame being fixedly installed at the top of the inner wall of the mud hopper, and a baffle mechanism for controlling the overflow flow rate provided at the bottom of the inner side of the output pipe;

[0006] The baffle mechanism includes a baffle, a first motor installed on one side of the output pipe, and a second motor fixedly installed at the bottom center of the baffle. An inner plate is provided inside the baffle. Several through holes are opened on the outer surface of both the inner plate and the baffle. One end of the output shaft of the second motor is fixedly connected to the inner plate. The inner plate is rotatably connected to the baffle through the second motor.

[0007] The inner disc and the baffle are provided with multiple parallel and equally spaced straight baffles in the through holes. The baffle is divided into a first baffle area and a second baffle area. The straight baffles at symmetrical positions in the two baffle areas have different inclination directions and are not complementary angles. The inner disc is made of flexible material and multiple magnetic blocks are embedded in the circumferential edge of the disc. Multiple electromagnet modules are embedded in the bottom edge of the top of the baffle. Coarse adjustment is achieved by adjusting the overlapping diameter of the through holes on the inner disc and the baffle. Fine adjustment is achieved by opening the electromagnet modules and rotating the positions of the two baffle areas.

[0008] Furthermore, the outer surface of the mounting frame is integrally provided with a side frame, the top of the side frame is fixedly installed with a guide post, the inner side of the input pipe is fixedly installed with a sleeve, the top of the guide post passes through the sleeve and is fixedly connected to the outer surface of the top frame, and the top of the guide post is fixedly connected to the top frame with bolts.

[0009] Furthermore, an inner frame is fixedly installed at both the upper and lower ends of the cylinder, and a hydraulic cylinder is installed inside the cylinder. The inner frame is sleeved on the outer surface of the hydraulic cylinder, and the bottom center of the bottom outer surface of the top of the output shaft of the hydraulic cylinder is fixedly connected.

[0010] Furthermore, an installation tube is fixedly installed on the front and rear outer surfaces of the output tube. A limiting mechanism is provided inside the installation tube. The limiting mechanism includes an electromagnet fixedly installed at one end inside the installation tube and a limiting rod provided inside the installation tube. One end of the limiting rod is inserted into a limiting hole opened on the outer surface of the baffle.

[0011] Furthermore, a stop block is fixedly installed at the other end of the limiting rod, and a second reset spring is sleeved on the outer surface of the limiting rod on one side of the stop block.

[0012] Furthermore, rotating shafts are fixedly installed on both outer surfaces of the baffle, and the output shaft of the first motor is fixedly connected to one end of the rotating shaft. The baffle is rotatably connected to the output pipe through the first motor.

[0013] Furthermore, mounting bases are fixedly installed around the outer surfaces of the cylinder and the output pipe, and connecting pipes are fixedly installed at the bottom of both the input pipe and the cylinder. Connecting holes are opened around the outer surfaces of the connecting pipes, and connecting grooves matching the connecting pipes are opened at the top of both the cylinder and the output pipe.

[0014] Furthermore, a fixing bolt is inserted inside the mounting base, with one end of the fixing bolt inserted into the connection hole.

[0015] Furthermore, a cover is provided on the outer side of the mounting base, a conduit is fixedly installed on the inner side of the cover, a guide rod is provided inside the conduit, one end of the guide rod is fixedly connected to the mounting base, and a first return spring is sleeved on the outer surface of the guide rod.

[0016] Furthermore, the cap is rotatably connected to the mounting base via a conduit, and a sealing ring is fixedly installed on the inner side of the cap.

[0017] The technical effects and advantages of this invention are as follows:

[0018] In this invention, based on the existing method of changing the overflow velocity by alternating the overlapping through-hole area through the rotation of two discs, a linear baffle with a differentiated arrangement direction in two zones and a controllable electromagnet are added, making the overflow change gradient more abundant.

[0019] This invention adjusts the flow rate of the mixture overflowing from the mud tank by setting an inner plate inside the baffle mechanism and adjusting the angle of the inner plate to control the size of the output through hole on the baffle. At the same time, the baffle mechanism can be opened after the mud and sand have completely settled to increase the overflow of river water in the mud tank and improve the overflow efficiency. Adjustments can be made according to the corresponding conditions.

[0020] The present invention features a detachable structure for the output pipe, cylinder, and input pipe, which reduces the difficulty of handling during installation. Furthermore, if the output pipe, cylinder, or input pipe is damaged, it can be disassembled and replaced individually, avoiding the need for complete replacement and greatly reducing maintenance costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the cylindrical mechanism of the present invention.

[0023] Figure 3 This is a cross-sectional view of the cylindrical mechanism of the present invention.

[0024] Figure 4 This is a schematic diagram of the output tube of the present invention.

[0025] Figure 5 This is a cross-sectional view of the baffle of the present invention.

[0026] Figure 6 This is a cross-sectional view of the mounting tube of the present invention.

[0027] Figure 7 This is an exploded view of the cylindrical body mechanism of the present invention.

[0028] Figure 8 This is a schematic diagram of the mounting base of the present invention.

[0029] Figure 9 This is an exploded view of the cap installation structure of the present invention.

[0030] Figure 10 This is a cross-sectional view of the cap of the present invention.

[0031] The attached figures are labeled as follows: 1. Base; 11. Fixed gear; 12. Transmission gear; 13. Drive motor; 14. Positioning hole; 15. First electromagnet; 16. Positioning rod; 17. Retaining ring; 18. Stop block; 19. First return spring; 2. Processing table; 21. Fixed seat; 22. Fixed table; 23. Second electromagnet; 24. Positioning block; 3. Frame; 31. Cylinder; 32. First slide; 33. Second slide; 34. First motor; 35. First screw; 36. Second motor; 37. Second screw; 38. Raw material box; 39. Conveying pipe; 391. Glue applicator head; 392. Inner tube; 393. Slider; 394. Second return spring; 395. Collar; 396. Slide groove; 397. Ball bearing; 398. Through hole; 4. Hydraulic cylinder; 41. Camera. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0033] according to Figure 1-6 The large trailing suction hopper vessel's high-efficiency dredging overflow device includes a cylindrical body 1. A mounting frame 2 is provided at the bottom of the outer surface of the cylindrical body 1, and the mounting frame 2 is sleeved on the outer surface of the cylindrical body 1. An input pipe 4 is fixedly installed at the top of the cylindrical body 1, and an output pipe 3 is fixedly installed at the bottom of the cylindrical body 1. The output pipe 3, the input pipe 4, and the cylindrical body 1 are all detachable structures. A top frame 5 is provided above the input pipe 4, and the top frame 5 is fixedly installed at the top of the inner wall of the mud tank. A baffle mechanism for controlling the overflow flow rate is provided at the bottom of the inner side of the output pipe 3.

[0034] The baffle mechanism includes a baffle 33, a first motor 34 installed on one side of the output pipe 3, and a second motor 35 fixedly installed at the bottom center of the baffle 33. An inner plate 36 is provided inside the baffle 33. Both the inner plate 36 and the outer surface of the baffle 33 are provided with several through holes 361. One end of the output shaft of the second motor 35 is fixedly connected to the inner plate 36. The inner plate 36 is rotatably connected to the baffle 33 through the second motor 35. When adjusting the baffle mechanism, the second motor 35 at the bottom of the baffle 33 is started first. The second motor 35 drives the inner plate 36 to rotate. The through holes 361 on the inner plate 36 are offset from the through holes 361 on the baffle 33, thereby adjusting the overflow flow rate of the river water.

[0035] The inner disk 36 and the through holes 361 on the baffle 33 are each provided with multiple parallel and equally spaced straight baffles. The baffle 33 is divided into a first baffle area and a second baffle area. The straight baffles at symmetrical positions in the two baffle areas have different inclination directions and are not complementary angles. The inner disk 36 is made of flexible material and multiple magnetic blocks are embedded in the circumferential edge of the disk. Multiple electromagnet modules are embedded in the bottom edge of the top of the baffle 33. Coarse adjustment is completed by adjusting the overlapping diameter of the through holes 361 on the inner disk 36 and the baffle 33. Fine adjustment is completed by opening the electromagnet modules and rotating the positions of the two baffle areas.

[0036] In this process, for example, by rotating the inner disk 36, the overlapping diameter of the through holes 361 on the inner disk 36 and the baffle 33 is adjusted to complete the coarse adjustment. For example, the coarse adjustment is roughly divided into ten level intervals from 1 to 10. In each interval, the inner disk is deformed in an oblique upward direction by opening the electromagnet module, thus becoming a bowl shape. After the deformation, the diameter of its hole is deformed, so that different degrees of differentiation can be made in each interval. In addition, the rotation stop position of the inner disk 36 in each level interval is symmetrical. Because the inclination direction of the straight baffles at the symmetrical position in the two baffle areas is different and they are not complementary angles, it is possible to achieve different degrees of inclination of the straight baffles in the inner disk 36 and the baffle 33 on the ground projection, thereby achieving further subdivision of the overlapping area of ​​the through holes, so that the overflow velocity can be adjusted with a richer gradient. Therefore, in this invention, based on the existing double disk rotation and alternation to change the overlapping through hole area to change the overflow velocity, the straight baffles with differentiated arrangement directions in the two zones and the controllable electromagnet are added, making the overflow change gradient richer.

[0037] Furthermore, a side frame 21 is integrally provided on the outer surface of the mounting bracket 2, a guide post 22 is fixedly installed on the top of the side frame 21, a sleeve 41 is fixedly installed on the inner side of the input pipe 4, the top of the guide post 22 passes through the sleeve 41 and is fixedly connected to the outer surface of the top frame 5, and the top of the guide post 22 is bolted to the top frame 5.

[0038] Furthermore, an inner frame 12 is fixedly installed at both the upper and lower ends of the cylinder 1. A hydraulic cylinder 11 is installed inside the cylinder 1. The inner frame 12 is sleeved on the outer surface of the hydraulic cylinder 11. The bottom center of the bottom outer surface of the top end of the top frame 5 at the top of the output shaft of the hydraulic cylinder 11 is fixedly connected. When the overflow device is working, the hydraulic cylinder 11 inside the cylinder 1 will be activated, driving the cylinder 1 to move downward, so that the top input pipe 4 is lower than the water surface in the mud chamber, allowing river water to enter from the input pipe and be discharged from the bottom output pipe 3.

[0039] Furthermore, an installation tube 31 is fixedly installed on the front and rear outer surfaces of the output tube 3. A limiting mechanism is provided inside the installation tube 31. The limiting mechanism includes an electromagnet 311 fixedly installed at one end inside the installation tube 31 and a limiting rod 312 provided inside the installation tube 31. One end of the limiting rod 312 is inserted into the limiting hole 38 opened on the outer surface of the baffle 33. A stop block 313 is fixedly installed at the other end of the limiting rod 312. A second reset spring 314 is sleeved on the outer surface of the limiting rod 312 on one side of the stop block 313. After the sediment has settled, the electromagnet 311 inside the installation tube 31 needs to be activated first. The limiting rod 312 is attracted by the magnetic force of the electromagnet 311, causing one end of the limiting rod 312 to disengage from the limiting holes 38 on both sides of the baffle 33.

[0040] Furthermore, a rotating shaft 37 is fixedly installed on both outer surfaces of the baffle 33. The output shaft of the first motor 34 is fixedly connected to one end of the rotating shaft 37. The baffle 33 is rotatably connected to the output pipe 3 through the first motor 34. When the first motor 34 is started, the baffle 33 is rotated along the rotating shaft 37, opening the bottom end of the output pipe 3 to facilitate the discharge of river water.

[0041] The specific implementation method is as follows: By adjusting the angle of the inner plate 36, the size of the output through hole 361 on the baffle 33 is controlled, thereby adjusting the flow rate of the mixture overflowing from the mud tank. At the same time, after the mud and sand have completely settled, the baffle mechanism can be opened to increase the overflow of river water in the mud tank and improve the overflow efficiency. Adjustments can be made according to the corresponding situation, which increases the practicality of the dredging overflow device. When the overflow device is working, the hydraulic cylinder 11 inside the cylinder 1 will be activated, driving the cylinder 1 to move downward, so that the top input pipe 4 is lower than the water surface in the mud tank, allowing river water to enter from the input pipe and exit from the bottom output pipe 3. During the discharge process, when adjusting the baffle mechanism, the second motor 35 at the bottom of the baffle 33 is first activated, which drives the inner plate 36 to rotate. The through hole 361 on the inner plate 36 and the through hole 36 on the baffle 33 are adjusted. 1. By staggering the flow, the overflow rate of the river water is regulated. After the sediment has settled, the electromagnet 311 in the installation pipe 31 needs to be activated first. The limiting rod 312 is attracted by the magnetic force of the electromagnet 311, causing one end of the limiting rod 312 to disengage from the limiting holes 38 on both sides of the baffle 33. As the limiting rod 312 moves into the installation pipe 31, it will stretch the first return spring 17, releasing the limitation on the baffle 33. Then, the first motor 34 is activated, causing the baffle 33 to rotate along the shaft 37, opening the bottom of the output pipe 3 to facilitate the discharge of river water. After the discharge is completed, the first motor 34 resets the baffle 33, and then the electromagnet 311 is turned off. The first return spring 17 will pull the limiting rod 312 outward, causing the limiting rod 312 to be inserted into the limiting hole 38, limiting the baffle 33.

[0042] according to Figure 7-10 The large trailing suction hopper vessel's high-efficiency dredging overflow device shown has mounting bases 13 fixedly installed around the outer surfaces of the cylinder 1 and the output pipe 3. The input pipe 4 and the bottom of the cylinder 1 are both fixedly installed with connecting pipes 42. The outer surfaces of the connecting pipes 42 are provided with connecting holes 43. The tops of the cylinder 1 and the output pipe 3 are provided with connecting grooves 32 that match the connecting pipes 42. During installation, the difficulty of handling can be reduced. At the same time, if the output pipe 3, the cylinder 1, and the input pipe 4 are damaged, they can be disassembled and replaced individually, avoiding the need for overall replacement and greatly reducing maintenance costs.

[0043] Furthermore, a fixing bolt 14 is inserted inside the mounting base 13, with one end of the fixing bolt 14 inserted into the connection hole 43. A cover 15 is provided on the outer side of the mounting base 13, and a conduit 18 is fixedly installed on the inner side of the cover 15. A guide rod 16 is provided inside the conduit 18, with one end of the guide rod 16 fixedly connected to the mounting base 13. A first return spring 17 is sleeved on the outer surface of the guide rod 16. The cover 15 is rotatably connected to the mounting base 13 through the conduit 18. A sealing ring 19 is fixedly installed on the inner side of the cover 15. When the cover 15 is rotated back along the conduit 18 and then released, the first return spring 17 will push the conduit 18 inward, causing the cover 15 to move inward until the inner sealing ring 19 is inserted into the mounting base 13, thus sealing the front end of the mounting base 13 through the cover 15.

[0044] The specific implementation method is as follows: During installation, the difficulty of handling can be reduced. Furthermore, if the output pipe 3, cylinder 1, and input pipe 4 are damaged, they can be disassembled and replaced individually, avoiding the need for complete replacement and significantly reducing maintenance costs. When assembling the device, the connecting pipe 42 at the bottom of the input pipe 4 is inserted into the connecting groove 32 at the top of the cylinder 1. The mounting holes 43 around the connecting pipe 42 correspond to one end of the mounting base 13. Then, a fixing bolt 14 is installed in the mounting base 13, and one end of the fixing bolt 14 is inserted into the limiting hole 38. Inside, the input pipe 4 is fixed, and then the cover 15 is rotated back along the guide tube 18. Then the cover 15 is released, and the first return spring 17 will push the guide tube 18 inward, causing the cover 15 to move inward until the inner sealing ring 19 is inserted into the mounting base 13. The front end of the mounting base 13 is sealed by the cover 15 to prevent the internal fixing bolts 14 from rusting and making disassembly inconvenient. When disassembly is required, the cover 15 is rotated along the guide tube 18 to open, which is more convenient. The installation method between the output pipe 3 and the cylinder 1 is the same.

[0045] Working principle of this invention:

[0046] Refer to the instruction manual appendix Figure 1-6When the overflow device is working, the hydraulic cylinder 11 inside the cylinder 1 will be activated, causing the cylinder 1 to move downwards, so that the top input pipe 4 is lower than the water surface in the mud chamber, allowing river water to enter through the input pipe and exit through the bottom output pipe 3. During the discharge process, when adjusting the baffle mechanism, the second motor 35 at the bottom of the baffle 33 is activated first, which drives the inner plate 36 to rotate. The through hole 361 on the inner plate 36 is misaligned with the through hole 361 on the baffle 33. By rotating the inner plate 36, the overlapping diameter of the through hole 361 on the inner plate 36 and the baffle 33 is adjusted to complete the coarse adjustment. For example, the coarse adjustment is roughly divided into ten level ranges from 1 to 10. In each range, the opening of the electromagnet module causes the inner plate to rotate diagonally upwards. The deformation transforms the plate into a bowl shape, and the diameter of the holes on it changes after the deformation, allowing for different degrees of differentiation within each interval. Furthermore, the rotation and stopping positions of the inner plate 36 correspond to each level interval, and the two stopping positions are symmetrical. Because the inclination directions of the straight baffles at the symmetrical positions in the two baffle areas are different and not complementary angles, it is possible to achieve different degrees of inclination of the straight baffles in the inner plate 36 and the baffle 33 on the ground projection, thereby further subdividing the overlapping area of ​​the through holes. The above process completes the adjustment of the overflow flow rate of the river water. After the sediment has settled, the first motor 34 is started, causing the baffle 33 to rotate along the shaft 37, opening the bottom end of the output pipe 3 to facilitate the discharge of the river water.

[0047] Refer to the instruction manual appendix Figure 7-10 When assembling the device, the connecting pipe 42 at the bottom of the input pipe 4 is inserted into the connecting groove 32 at the top of the cylinder 1. The mounting holes 43 around the connecting pipe 42 correspond to one end of the mounting base 13. Then, the fixing bolt 14 is installed in the mounting base 13, and one end of the fixing bolt 14 is inserted into the limiting hole 38 to fix the input pipe 4. Then, the cover 15 is rotated back along the guide tube 18, and then the cover 15 is released. The first return spring 17 will push the guide tube 18 inward, causing the cover 15 to move inward until the inner sealing ring 19 is inserted into the mounting base 13. The cover 15 seals the front end of the mounting base 13 to prevent the internal fixing bolt 14 from rusting and becoming inconvenient to disassemble.

[0048] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0049] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0050] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency dredging overflow device for a large trailing suction hopper dredger, comprising a cylindrical body (1), characterized in that: The bottom of the outer surface of the cylinder (1) is provided with a mounting bracket (2), which is sleeved on the outer surface of the cylinder (1). An input pipe (4) is fixedly installed at the top of the cylinder (1), and an output pipe (3) is fixedly installed at the bottom of the cylinder (1). The output pipe (3), the input pipe (4), and the cylinder (1) are all detachable structures. A top frame (5) is provided above the input pipe (4), which is fixedly installed at the top of the inner wall of the mud chamber. A baffle mechanism for controlling the overflow flow rate is provided at the bottom of the inner side of the output pipe (3). The baffle mechanism includes a baffle (33), a first motor (34) installed on one side of the output pipe (3), and a second motor (35) fixedly installed at the bottom center of the baffle (33). An inner plate (36) is provided inside the baffle (33). Several through holes (361) are opened on the outer surface of both the inner plate (36) and the baffle (33). One end of the output shaft of the second motor (35) is fixedly connected to the inner plate (36). The inner plate (36) is rotatably connected to the baffle (33) through the second motor (35). The inner disk (36) and the baffle (33) are provided with multiple parallel and equally spaced straight bars in the through holes (361). The baffle (33) is divided into a first baffle area and a second baffle area. The straight bars at the symmetrical positions in the two baffle areas have different inclination directions and are not complementary angles. The inner disk (36) is made of flexible material and multiple magnetic blocks are embedded in the circumferential edge of the disk. Multiple electromagnet modules are embedded in the bottom edge of the top of the baffle (33). Coarse adjustment is completed by adjusting the overlapping diameter of the through holes (361) on the inner disk (36) and the baffle (33). Fine adjustment is completed by opening the electromagnet module and rotating the positions of the two baffle areas.

2. The high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 1, characterized in that: The outer surface of the mounting bracket (2) is integrally provided with a side frame (21). A guide post (22) is fixedly installed at the top of the side frame (21). A sleeve (41) is fixedly installed on the inner side of the input pipe (4). The top of the guide post (22) passes through the sleeve (41) and is fixedly connected to the outer surface of the top frame (5). The top of the guide post (22) is bolted to the top frame (5).

3. The high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 2, characterized in that: The inner frame (12) is fixedly installed at both the upper and lower ends of the cylinder (1). A hydraulic cylinder (11) is installed inside the cylinder (1). The inner frame (12) is sleeved on the outer surface of the hydraulic cylinder (11). The bottom center of the bottom outer surface of the top bracket (5) at the top of the output shaft of the hydraulic cylinder (11) is fixedly connected.

4. The high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 1, characterized in that: The output tube (3) has a mounting tube (31) fixedly installed on its front and rear outer surfaces. The mounting tube (31) has a limiting mechanism inside. The limiting mechanism includes an electromagnet (311) fixedly installed at one end inside the mounting tube (31) and a limiting rod (312) installed inside the mounting tube (31). One end of the limiting rod (312) is inserted into the limiting hole (38) opened on the outer surface of the baffle (33).

5. A high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 4, characterized in that: A stop (313) is fixedly installed at the other end of the limiting rod (312), and a second return spring (314) is sleeved on the outer surface of the limiting rod (312) on one side of the stop (313).

6. The high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 1, characterized in that: The baffle (33) has a rotating shaft (37) fixedly installed on both outer surfaces. The output shaft of the first motor (34) is fixedly connected to one end of the rotating shaft (37). The baffle (33) is rotatably connected to the output pipe (3) through the first motor (34).

7. The high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 1, characterized in that: Mounting bases (13) are fixedly installed around the outer surfaces of the cylinder (1) and the output pipe (3). Connecting pipes (42) are fixedly installed at the bottom of the input pipe (4) and the cylinder (1). Connecting holes (43) are opened around the outer surface of the connecting pipe (42). Connecting grooves (32) matching the connecting pipe (42) are opened at the top of the cylinder (1) and the output pipe (3).

8. A high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 7, characterized in that: A fixing bolt (14) is inserted inside the mounting base (13), and one end of the fixing bolt (14) is inserted inside the connecting hole (43).

9. A high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 8, characterized in that: The mounting base (13) is provided with a cover (15) on the outside. A conduit (18) is fixedly installed on the inside of the cover (15). A guide rod (16) is provided inside the conduit (18). One end of the guide rod (16) is fixedly connected to the mounting base (13). A first reset spring (17) is sleeved on the outer surface of the guide rod (16).

10. A high-efficiency dredging overflow device for a large trailing suction hopper dredger according to claim 9, characterized in that: The cover (15) is rotatably connected to the mounting base (13) via a conduit (18), and a sealing ring (19) is fixedly installed on the inner side of the cover (15).

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