Hinged type conical mud door of trailing suction dredger and mud door wedge opening device

Abstract

The invention relates to the technical field of ship designing and manufacturing, and discloses a hinged type conical mud door and a mud door wedge opening device of a trailing suction dredger, the hinged type conical mud door comprises a conical mud door, a transmission device and the mud door wedge opening device, the transmission device is arranged on a mud cabin cross beam and is close to a mud cabin inner surrounding wall plate, and the mud door wedge opening device is arranged on a mud cabin ship bottom plate and is close to a mud cabin inner surrounding wall plate. An opening is formed in the hopper door wedge opening device, the conical hopper door is arranged in the opening of the hopper door wedge opening device, the side, away from the inner enclosure bulkhead plate of the hopper, of the conical hopper door is hinged to the hopper door wedge opening device, and the transmission device is connected with the side, close to the inner enclosure bulkhead plate of the hopper, of the conical hopper door. According to the hinged type conical mud door and the mud door wedge opening device, due to the arrangement of the mud door hinges, the main chain can be arranged closer to the root of the mud cabin cross beam, the hydraulic oil cylinder is closer to the broadside of a dredger body, the size of the mud cabin cross beam is optimized, the loading space of a mud cabin is increased, and the loading and unloading efficiency of a dredger is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ship design and manufacturing, and in particular to an articulated conical mud door and a mud door wedge device of a trailing suction dredger. Background Art

[0002] Trailing suction hopper dredger is a high-tech, high-value-added ship type that integrates dredging technology, ship design, mechanical engineering, electrical engineering and other technologies. Modern trailing suction hopper dredgers show a development trend of large-scale and shallow water operations, which promotes trailing suction hopper dredgers to improve the mud tank loading capacity and loading and unloading efficiency as much as possible when designing mud tanks. In the overall design layout of trailing suction hopper dredgers, the mud tank design is the most concerned part. The mud tank design mainly focuses on the design of the mud tank shape, and the design of the mud tank shape is closely related to the selection of mud door form.

[0003] At present, the commonly used mud gates of trailing suction dredgers are mainly divided into two types: conical mud gates and square mud gates. For structural design, when the conical mud gate is used, the bottom plate of the ship is a circular opening, which helps to avoid the stress concentration in the opening corners caused by the square opening of the bottom plate of the square mud gate. The square mud gate has a connection hinge at the bottom of the ship, which provides support and helps to reduce the tensile load of the hydraulic mud gate tie rod on the top of the mud tank coaming. Due to the lack of connection hinges, the conical mud gate is only supported by the hydraulic mud gate tie rod of the mud tank coaming, so the design load of the top structure of the mud tank coaming is larger than that of the square mud gate.

[0004] The published patent "A New Square Mud Door Device" (CN217150428U) proposes a new square mud door device, which uses a hydraulic system consisting of a square mud door, a transmission rod, a pin shaft, a cylinder support seat, and a stop block to realize the opening and closing operation of the mud door in the mud tank. Although the force on the mud tank beam is improved to a certain extent and the mud carrying capacity is increased, the mud door discharge port angle is limited, and it is impossible to avoid the inherent defect of stress concentration in the corners caused by the rectangular mud door bottom plate opening.

[0005] The published patent "A double-cone mud door structure and manufacturing method" (CN111021451A) proposes an inverted cone-shaped mud door, which is closed from top to bottom to close the mud door opening, reducing the stress on the hydraulic mud door pull rod mechanism and avoiding the risk of the mud door falling off and sinking to the bottom when the throttle pull rod breaks. However, the double-cone mud door occupies a certain amount of mud tank space relative to the conventional conical mud door, offsetting the effect of increasing the mud tank capacity brought about by reducing the design load of the mud tank coaming. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the existing mud door design has defects and is difficult to meet the production needs of the mud tank.

[0007] In order to solve the above technical problems, the technical solution of the present invention is to provide an articulated conical mud gate and a mud gate wedge device of a bucket suction dredger, comprising a conical mud gate, a transmission device and a mud gate wedge device, wherein the transmission device is arranged on the mud tank cross beam and close to the inner surrounding wall plate of the mud tank, the mud gate wedge device is arranged on the bottom plate of the mud tank and has an opening inside, the conical mud gate is arranged in the opening of the mud gate wedge device, and the side of the conical mud gate away from the inner surrounding wall plate of the mud tank is hinged to the mud gate wedge device, and the transmission device is connected to the side of the conical mud gate close to the inner surrounding wall plate of the mud tank.

[0008] Optionally, the conical mud door includes a mud door body, which is a cone with a size gradually decreasing from bottom to top, and a mud door hinge is provided on the conical surface of the side away from the inner wall plate of the mud chamber, and the mud door body is hingedly connected to the mud door wedge device through the mud door hinge.

[0009] Optionally, at least two mud door pull ears are symmetrically provided on a conical surface of one side of the mud door body close to the inner wall plate of the mud chamber, the mud door pull ears are connected to auxiliary chains, the auxiliary chains are connected to mud door chain pull ears, the mud door chain pull ears are connected to main chains, and the main chain is connected to the transmission device.

[0010] Optionally, a roller bracket is provided on the inner wall plate of the mud tank, a guide roller is provided on the roller bracket, and the main chain rests on a side of the guide roller close to the inner wall plate of the mud tank.

[0011] Optionally, the mud gate wedge device includes a mud tank wedge casting, a mud gate wedge inner wall plate and a mud gate wedge top plate, the mud tank wedge casting is located at the bottom of the mud gate wedge device and connected to the mud tank bottom plate, the mud gate wedge top plate is located at the top of the mud gate wedge device and connected to the mud tank inner surrounding wall plate, the upper end of the mud gate wedge inner wall plate is connected to an end of the mud gate wedge top plate away from the mud tank inner surrounding wall plate, and the lower end is connected to an end of the mud tank wedge casting away from the mud tank inner surrounding wall plate, the mud gate wedge casting, the mud gate wedge inner wall plate and the mud gate wedge top plate are combined to form an opening, the mud gate body is arranged in the opening, a hinge groove is provided on the side of the mud gate wedge inner wall plate away from the mud tank inner surrounding wall plate, a mud gate hinge groove wall plate is provided in the hinge groove, and the mud gate hinge is arranged in the hinge groove and connected to the mud gate hinge groove wall plate.

[0012] Optionally, a mud door hinge groove sealing strip is provided between the mud door body and the mud door hinge groove wall plate.

[0013] Optionally, the mud gate wedge casting, the mud gate wedge inner wall plate, the mud gate wedge top plate and the mud chamber inner wall plate are combined to form an internal space of the mud gate wedge, and a plurality of mud gate wedge internal components are arranged in the internal space of the mud gate wedge, and the mud gate wedge internal components are provided with mud gate wedge internal component process holes.

[0014] Optionally, the mud door wedge casting is inclined upward, and the inclination angle is the same as the angle of the conical surface of the mud door body, and a mud door wedge sealing ring is provided between the mud door wedge casting and the mud door body.

[0015] Optionally, the transmission device includes a main chain sleeve and a hydraulic cylinder supporting device, the main chain sleeve is arranged at the root of one side of the mud tank beam close to the inner wall plate of the mud tank, and the upper and lower ends extend out of the mud tank beam, a hydraulic cylinder supporting device is provided on the outside of the upper end of the main chain sleeve, the hydraulic cylinder supporting device is fixedly connected to the mud tank beam, a hydraulic cylinder is provided on the upper end of the hydraulic cylinder supporting device, the lower end of the hydraulic cylinder is connected to a support seat pin shaft, and the lower end of the support seat pin shaft is connected to the main chain.

[0016] Optionally, a toggle plate is provided at the connection between the hydraulic cylinder supporting device and the mud tank cross beam, and a brake block is provided on the hydraulic cylinder.

[0017] In summary, the present invention has at least one of the following beneficial effects:

[0018] 1. The arrangement of the hinge of the mud gate of the articulated conical mud gate and the mud gate wedge device of the present invention enables the main chain to be arranged closer to the root of the mud tank beam, and the hydraulic cylinder is closer to the side of the hull, which is beneficial to optimize the size of the mud tank beam, increase the loading space of the mud tank, and improve the loading and unloading efficiency of the dredger.

[0019] 2. The hinge of the mud door of the present invention can prevent the loss of the conical mud door when a main chain or an auxiliary chain breaks suddenly. The provision of several auxiliary chains also reduces the risk that the mud door cannot be closed when a single auxiliary chain breaks. The provision of multiple hinges limits the lateral movement of the conical mud door, which helps to avoid excessive local pressure when the mud door is hinged and increase the service life of the mud door.

[0020] 3. Compared with the conical mud door with vertical up and down movement, the articulated conical mud door of the present invention has fewer dead angles when opened, lower blocking effect when unloading mud in the cabin, faster unloading speed, and at the same time, the cylinder workload required to close the mud door after completing mud unloading is smaller.

[0021] 4. The mud gate wedge device of the present invention cooperates with the mud gate locking system composed of the articulated conical mud gate, which increases the strength and rigidity of the mud gate opening, and is also beneficial to the construction and maintenance of the mud gate wedge structure, reducing the risk of mud leakage and water ingress at the mud gate wedge, and is suitable for promotion and use on suction dredgers.

[0022] 5. The assembly angle of the main chain and the guide roller of the present invention prevents the guide roller from being subjected to excessive lateral pressure of the main chain when the main chain is subjected to tensile load under the mud tank loading, and the end of the roller bracket limits the range of movement of the main chain to prevent the main chain from detaching from the guide roller.

[0023] 6. The wedge casting of the mud gate of the present invention has an angle with the baseline of the mud tank bottom plate, which is beneficial to the closing positioning of the tapered mud gate and the sealing of the mud gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic cross-sectional view of the assembly structure when the mud door of the present invention is in a closed state;

[0025] Figure 2 It is a schematic cross-sectional view of the assembly structure when the mud door of the present invention is in an open state;

[0026] Figure 3 This is a schematic diagram of the assembly of the mud door chain of the present invention;

[0027] Figure 4 Schematic diagram of the top view of the conical mud door in the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the mud door wedge device in the present invention;

[0029] Figure 6 This is a schematic diagram of the mud door wedge device in the present invention from a bottom-up perspective;

[0030] In the figure: 1. conical mud gate; 2. mud gate body; 3. mud gate hinge; 4. mud gate pull ear; 5. auxiliary chain; 6. mud gate chain ear plate; 7. main chain; 8. roller bracket; 9. guide roller; 10. main chain sleeve; 11. mud tank cross beam; 12. support seat pin shaft; 13. brake block; 14. hydraulic cylinder; 15. toggle plate; 16. hydraulic cylinder support device; 17. mud tank inner wall plate; 18. mud tank bottom plate; 19. mud tank wedge casting; 20. mud gate wedge sealing ring; 21. mud gate wedge top plate; 22. mud gate wedge inner wall plate; 23. mud gate wedge internal component; 24. mud gate wedge internal component process hole; 25. mud gate hinge groove wall plate; 26. mud gate hinge groove sealing strip; 27. mud gate wedge device. DETAILED DESCRIPTION

[0031] The following combination Figure 1-6 The present invention is described in further detail.

[0032] The invention discloses an articulated conical mud door and a mud door wedge device of a trailing suction dredger, which avoids the stress concentration problem of the corners of the traditional square mud door opening, reduces the number of mud door hinges, and improves the sealing performance of the mud compartment. Compared with the conical mud door, the articulated mud door design of the invention cooperates with the conical wedge structure, which effectively reduces the design load of the mud door transmission device and the mud compartment crossbeam;

[0033] Reference Figure 1 and Figure 2, including a conical mud door 1, a transmission device and a mud door wedge device 27, the transmission device is arranged on the mud tank cross beam 11 and is close to the mud tank inner wall plate 17, the mud door wedge device 27 is arranged on the mud tank bottom plate 18, and an opening is arranged inside it, the conical mud door 1 is arranged in the opening of the mud door wedge device 27, and the side of the conical mud door 1 away from the mud tank inner wall plate 17 is hinged to the mud door wedge device 27, and the transmission device is connected to the side of the conical mud door 1 close to the mud tank inner wall plate 17.

[0034] In a further embodiment, referring to Figure 3 and Figure 4 The conical mud door 1 comprises a mud door body 2, which is a cone with a size gradually decreasing from bottom to top, and a mud door hinge 3 is provided on the conical surface of the mud door body 2 on the side away from the mud tank inner wall plate 17, and the mud door body 2 is hingedly connected to the mud door wedge device 27 through the mud door hinge 3, and at least two mud door pull ears 4 are symmetrically provided on the conical surface of the mud door body 2 on the side close to the mud tank inner wall plate 17, and the mud door pull ears 4 are connected with auxiliary chains 5, and the auxiliary chains 5 are connected with mud door chain pull ears 6, and the mud door chain pull ears 6 are connected with main chains 7, and the main chains 7 are connected with the transmission device, and the mud tank inner wall plate 17 is provided with a roller bracket 8, and the roller bracket 8 is provided with a guide roller 9, and the main chain 7 is placed on the side of the guide roller 9 close to the mud tank inner wall plate 17;

[0035] In this embodiment, two mud door hinges 3 are provided, which are symmetrically arranged relative to the center line of the mud door, and the distance from the center line of the mud door is between 0.2 times the diameter of the mud door and 0.5 times the diameter of the mud door. They are fixedly connected to the mud door body 2 by welding, which limits the lateral movement of the conical mud door 1 and avoids misalignment when the conical mud door 1 is opened and closed; the height of the roller bracket 8 from the mud tank bottom plate 18 is variable and can be set as needed. Two mud door pull ears 4 are provided, which are symmetrically arranged relative to the center line of the mud door, and the distance from the center line of the mud door is between 0.2 times the diameter of the mud door and 0.4 times the diameter of the mud door. They are fixedly connected to the mud door body 2 by welding, which is beneficial to avoid excessive local pressure when the mud door is hinged and improve the service life of the mud door. The angle between the auxiliary chains 5 thereon is 30°~45°, and the specific value is determined by the wedge size of the mud door enclosure, the size of the mud door diameter and the height of the guide roller 9, which is beneficial to coordinate and share the pressure of mud and sand in the mud tank.

[0036] In a further embodiment, referring to Figure 5 and Figure 6The mud gate wedge device 27 includes a mud tank wedge casting 19, a mud gate wedge inner wall plate 22 and a mud gate wedge top plate 21. The mud tank wedge casting 19 is located at the bottom of the mud gate wedge device 27 and is connected to the mud tank bottom plate 18. The mud gate wedge top plate 21 is located at the top of the mud gate wedge device 27 and is connected to the mud tank inner wall plate 17. The upper end of the mud gate wedge inner wall plate 22 is connected to an end of the mud gate wedge top plate 21 away from the mud tank inner wall plate 17, and the lower end is connected to the mud tank wedge casting 19 away from the mud tank. One end of the inner surrounding wall panel 17 is connected, the height of the mud door wedge inner wall panel 22 is variable, and can be optimized and adjusted according to the size of the conical mud door 1, the mud door wedge casting 19, the mud door wedge inner wall panel 22 and the mud door wedge top panel 21 are combined to form an opening, the mud door body 2 is arranged in the opening, and the mud door wedge inner wall panel 22 is provided with a hinge groove on the side away from the mud tank inner surrounding wall panel 17, and a mud door hinge groove wall panel 25 is provided in the hinge groove, and the mud door hinge 3 is arranged in the hinge groove and connected to the mud door hinge groove wall panel 25.

[0037] In a further embodiment, a mud door hinge groove sealing strip 26 is provided between the mud door body 2 and the mud door hinge groove wall panel 25, and the mud door wedge casting 19, the mud door wedge inner wall panel 22, the mud door wedge top plate 21 and the mud chamber inner wall panel 17 are combined to form the mud door wedge internal space, and a plurality of mud door wedge internal components 23 are provided in the mud door wedge internal space, and the mud door wedge internal component process holes 24 serving as construction and maintenance passages are provided on the mud door wedge internal components 23, the mud door wedge casting 19 is inclined upward, and the inclination angle is the same as the angle of the conical surface of the mud door body 2, and a mud door wedge sealing ring 20 is provided between the mud door wedge casting 19 and the mud door body 2.

[0038] In this embodiment, the angle between the mud gate wedge casting 19 and the mud tank bottom plate 18 is 30°~45°, and the size of the angle is determined by the size of the mud gate well wedge, the size of the mud gate diameter, and the distance between the mud gate wedge inner wall plate 22 and the mud tank inner surrounding wall plate 17. The existence of the angle is beneficial to the closed positioning of the conical mud gate 1 and the sealing of the mud gate door; the upper end surface of the mud gate wedge top plate 21 is arranged at the height of the double bottom of the double-layer side, forming a stable wedge structure, which is beneficial to the transmission of the force of the mud gate wedge device 3; the mud gate hinge groove wall plate 26 includes a plurality of vertical panels and a plurality of horizontal panels, and the vertical panels and the horizontal panels are fixedly connected. The specific interval between the panels is determined according to the size of the mud gate hinge 4 and the rotation stroke of the mud gate.

[0039] In a further embodiment, referring to Figure 1The transmission device includes a main chain sleeve 10 and a hydraulic cylinder supporting device 16. The main chain sleeve 10 is arranged at the root of one side of the mud tank cross beam 11 close to the inner wall plate 17 of the mud tank, and the upper and lower ends extend out of the mud tank cross beam 11. A hydraulic cylinder supporting device 16 is provided on the outer side of the upper end of the main chain sleeve 10. The hydraulic cylinder supporting device 16 is fixedly connected to the mud tank cross beam 11. A hydraulic cylinder 14 is provided on the upper end of the hydraulic cylinder supporting device 16. A support seat pin shaft 12 is connected to the lower end of the hydraulic cylinder 14. The lower end of the support seat pin shaft 12 is connected to the main chain 7. A toggle plate 15 is provided at the connection between the hydraulic cylinder supporting device 16 and the mud tank cross beam 11, and a brake block 13 is provided on the hydraulic cylinder 14.

[0040] The working principle of the present invention is as follows: when the dredger is in a loading condition, the conical mud gate 1 remains in a closed state, the hydraulic cylinder 14 is in a closed state, and the brake block 13 is locked, so that the main chain 7, the auxiliary chain 5 and the conical mud gate 1 are in a tightened and locked state, and the mud gate wedge seal ring connection structure 20 between the conical mud gate 1 and the mud tank wedge casting 19 enables the conical mud gate 1 to be completely closed to achieve the sealing of the mud tank opening. At this time, the main chain 7 is in an up and down stretching state, and is 90 degrees with the baseline of the mud tank bottom plate, so as to avoid the guide roller 9 from being subjected to excessive lateral pressure of the main chain 7 when the main chain 7 is subjected to a tensile load under the mud tank loading. It should be supplemented that the end of the roller bracket 8 limits the range of movement of the main chain 7 to prevent the main chain 7 from being separated from the guide roller 9;

[0041] When the dredger is in the mud unloading condition, the conical mud gate 1 is in the open mode, at this time, the brake block 13 is moved out to enable the main chain 7 to move up and down, and the hydraulic cylinder 14 controls the main chain 7 to move downward through the control system, thereby driving the auxiliary chain 5 and the conical mud gate 1 to rotate through the mud gate chain pull ear 6, and pushing the conical mud gate 1 to open to realize mud unloading in the mud tank; since the conical mud gate 1 is connected to the mud gate hinge groove wall plate 25 through the mud gate hinge 3, the gap between the conical mud gate 1 and the mud tank bottom plate 18 will change during the movement of the conical mud gate 1, so a mud gate hinge groove sealing strip 26 is set in the middle to ensure that mud and water will not leak from the gap;

[0042] When the dredger completes the mud unloading work and closes the mud gate, the control system controls the hydraulic cylinder 14 to pull the support seat pin shaft 12 and the main chain 7 upward to achieve the closing of the conical mud gate.

[0043] The arrangement of the mud door hinge 3 of the present invention allows the main chain 7 to be arranged at the root of the mud compartment cross beam 11, which is beneficial to optimizing the size of the mud compartment cross beam 11 and increasing the loading space of the mud compartment; at the same time, the arrangement of the mud door hinge 3 can prevent the loss of the conical mud door 1 when a sudden break occurs in the main chain 7 or the auxiliary chain 5; the arrangement of several auxiliary chains 5 also reduces the risk that the mud door cannot be closed when a single auxiliary chain breaks; compared with the conical mud door with an up and down vertical movement stroke, the articulated conical mud door of the present invention has fewer dead angles when opened, a lower blocking effect when discharging mud and sand in the compartment, and a faster unloading speed; the cylinder workload required to close the mud door after completing the mud unloading is smaller.

[0044] The above description is only a preferred embodiment of the present invention, and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the present invention's patent description and illustrations should be included in the protection scope of the present invention.

Claims

1. An articulated conical mud gate and mud gate wedge device for a trailing suction dredger, It is characterized in that The invention comprises a conical mud door (1), a transmission device and a mud door wedge device (27), wherein the transmission device is arranged on a mud tank cross beam (11) and is close to an inner wall plate (17) of the mud tank, the mud door wedge device (27) is arranged on a mud tank bottom plate (18) and has an opening therein, the conical mud door (1) is arranged in the opening of the mud door wedge device (27), and a side of the conical mud door (1) away from the inner wall plate (17) of the mud tank is hinged to the mud door wedge device (27), and the transmission device is connected to a side of the conical mud door (1) close to the inner wall plate (17) of the mud tank.

2. The articulated conical mud gate and mud gate wedge device of the trailing suction dredger according to claim 1, It is characterized in that The conical mud door (1) comprises a mud door body (2), the mud door body (2) is a cone whose size gradually decreases from bottom to top, and a mud door hinge (3) is provided on the conical surface of the mud door body away from the inner wall plate (17) of the mud chamber, and the mud door body (2) is hingedly connected to the mud door wedge device (27) through the mud door hinge (3).

3. The articulated conical mud gate and mud gate wedge device of the trailing suction dredger according to claim 2, It is characterized in that At least two mud door pull ears (4) are symmetrically arranged on a conical surface of one side of the mud door body (2) close to the inner wall plate (17) of the mud chamber, the mud door pull ears (4) are connected to auxiliary chains (5), the auxiliary chains (5) are connected to mud door chain pull ears (6), the mud door chain pull ears (6) are connected to main chains (7), and the main chains (7) are connected to the transmission device.

4. The articulated conical mud gate and mud gate wedge device of the trailing suction dredger according to claim 3, It is characterized in that A roller bracket (8) is provided on the mud tank inner wall plate (17), a guide roller (9) is provided on the roller bracket (8), and the main chain (7) rests on a side of the guide roller (9) close to the mud tank inner wall plate (17).

5. The articulated conical mud gate and mud gate wedge device of the trailing suction dredger according to claim 2, It is characterized in that The mud gate wedge device (27) comprises a mud tank wedge casting (19), a mud gate wedge inner wall plate (22) and a mud gate wedge top plate (21); the mud tank wedge casting (19) is located at the bottom of the mud gate wedge device (27) and is connected to the mud tank bottom plate (18); the mud gate wedge top plate (21) is located at the top of the mud gate wedge device (27) and is connected to the mud tank inner wall plate (17); the upper end of the mud gate wedge inner wall plate (22) and the mud gate wedge top plate (21) are away from the mud tank inner wall plate (17). The mud door body (2) is connected to the mud tank wedge casting (19), and the lower end is connected to one end of the mud tank wedge casting (19) away from the mud tank inner surrounding wall plate (17). The mud door wedge casting (19), the mud door wedge inner wall plate (22) and the mud door wedge top plate (21) are combined to form an opening. The mud door body (2) is arranged in the opening. The mud door wedge inner wall plate (22) is provided with a hinge groove on one side away from the mud tank inner surrounding wall plate (17). A mud door hinge groove wall plate (25) is provided in the hinge groove. The mud door hinge (3) is arranged in the hinge groove and connected to the mud door hinge groove wall plate (25).

6. The articulated conical mud gate and mud gate wedge device of the trailing suction hopper dredger according to claim 5, It is characterized in that A mud door hinge groove sealing strip (26) is provided between the mud door body (2) and the mud door hinge groove wall plate (25).

7. The articulated conical mud gate and mud gate wedge device of a trailing suction hopper dredger according to claim 5, It is characterized in that The mud gate wedge casting (19), the mud gate wedge inner wall plate (22), the mud gate wedge top plate (21) and the mud chamber inner wall plate (17) are combined to form an internal space of the mud gate wedge. A plurality of mud gate wedge internal components (23) are arranged in the internal space of the mud gate wedge. The mud gate wedge internal components (23) are provided with mud gate wedge internal component process holes (24).

8. The articulated conical mud gate and mud gate wedge device of a trailing suction hopper dredger according to claim 5, It is characterized in that The mud door wedge casting (19) is inclined upward, and the inclination angle is the same as the angle of the conical surface of the mud door body (2). A mud door wedge sealing ring (20) is provided between the mud door wedge casting (19) and the mud door body (2).

9. The articulated conical mud gate and mud gate wedge device of a trailing suction hopper dredger according to claim 3, It is characterized in that The transmission device comprises a main chain sleeve (10) and a hydraulic cylinder support device (16). The main chain sleeve (10) is arranged at the root of one side of the mud tank cross beam (11) close to the mud tank inner wall plate (17), and the upper and lower ends extend out of the mud tank cross beam (11). The upper end of the main chain sleeve (10) is provided with a hydraulic cylinder support device (16). The hydraulic cylinder support device (16) is fixedly connected to the mud tank cross beam (11). The upper end of the hydraulic cylinder support device (16) is provided with a hydraulic cylinder (14). The lower end of the hydraulic cylinder (14) is connected to a support seat pin shaft (12), and the lower end of the support seat pin shaft (12) is connected to the main chain (7).

10. The articulated conical mud gate and mud gate wedge device of a trailing suction hopper dredger according to claim 9, It is characterized in that A toggle plate (15) is provided at the connection between the hydraulic cylinder support device (16) and the mud tank cross beam (11), and a brake block (13) is provided on the hydraulic cylinder (14).

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