Dredging apparatus for trailing suction dredger

Abstract

The present invention relates to the technical field of trailing suction dredgers. Disclosed is a dredging apparatus for a trailing suction dredger. The dredging apparatus comprises a drag head suction shell and a top cover, wherein the top cover is fixedly connected to one side of the drag head suction shell, connecting wing plates are integrally provided on two sides of the top of the drag head suction shell, a sealing cover is fixedly connected to the top of the drag head suction shell, a driving mechanism is provided inside the sealing cover, transmission mechanisms are arranged on two sides of the drag head suction shell, and a rolling resisting mechanism is provided between the two transmission mechanisms; an anti-collision mechanism is provided at the bottom of the drag head suction shell; a scraping mechanism is provided inside the drag head suction shell; and a slag discharging mechanism is provided on an upper surface of the drag head suction shell. The dredging apparatus for a trailing suction dredger can clean up rocks intercepted on the surface through the cooperation of the continuous rotation of a blocking roller and a scraping mechanism, thereby avoiding the blockage of a second passage hole serving as a sludge suction inlet, and ensuring smoothness during sludge suction.

Description

Dredging equipment of a trailing suction hopper vessel Technical Field

[0001] The invention relates to the technical field of trailing suction hopper ships, in particular to dredging equipment of a trailing suction hopper ship. Background Art

[0002] The dredger is a type of suction hopper dredger that sucks mud through the rake heads placed on both sides or at the stern of the hull, and works by sucking mud while sailing. It uses mud rakes to loosen the soil, and an open bottom mud tank is set in the ship. The tank volume represents the size of the ship. The dredger is a large self-propelled, bunker-type dredger equipped with a rake head excavator and a hydraulic mud suction device. When dredging, the rake suction pipe is lowered to the river bottom, and the vacuum effect of the mud pump is used to absorb mud from the river bottom into the mud bunker of the dredger through the rake head and the mud suction pipe. When the mud bunker is full, the rake is raised and sailed to the mud dumping area, the mud door is opened to unload the mud, or the excavated mud is directly discharged overboard. Some dredgers can also suck out the mud unloaded in the mud bunker for filling. It has good navigation performance, can be self-propelled, self-loaded, and self-unloaded, and is in a sailing state during work, without the need for a positioning device. It is suitable for the excavation and maintenance of unprotected, narrow coastal access channels, and is most efficient when excavating silt.

[0003] Most of the trailing suction hopper dredging equipment on the market uses a grille inside the drag head to block larger stones from entering the sludge suction pipe. However, after long-term use, the blocked stones are easily adsorbed by the negative pressure of the sludge suction pipe and accumulate on the surface of the grille, causing a certain blockage of the grille and affecting the sludge suction efficiency. Therefore, a trailing suction hopper dredging equipment is needed, which can clean the stones intercepted on the surface by rotation, avoid blockage of the sludge adsorption inlet, and ensure smooth sludge adsorption.

[0004] Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a dredging device for a trailing suction hopper vessel, which solves the problems mentioned in the above background.

[0006] The present invention provides the following technical solution: a dredging equipment of a trailing suction boat, comprising: a drag head suction shell and a top cover shell, the top cover shell being fixedly connected to one side of the drag head suction shell, connecting wing plates being integrally provided on both sides of the top of the drag head suction shell, a sealing cover shell being fixedly connected to the top of the drag head suction shell, a driving mechanism being provided inside the sealing cover shell, a transmission mechanism being provided on both sides of the drag head suction shell, a rolling blocking mechanism being provided between the two transmission mechanisms, an anti-collision mechanism being provided at the bottom of the drag head suction shell, a scraping mechanism being provided inside the drag head suction shell, a slag discharge mechanism being provided on the upper surface of the drag head suction shell, a water pressure impact mechanism being provided at the bottom of one side of the drag head suction shell, and a connecting end being provided on one side of the drag head suction shell.

[0007] Preferably, the driving mechanism includes a motor frame, a driving motor, an output shaft, a transmission shaft, a driven gear and a driving gear, the motor frame is fixedly connected to the upper surface of the mud suction shell of the drag head, the driving motor is fixedly mounted on the inner wall of the motor frame, the output shaft is fixedly connected to the output end of the driving motor through a coupling, the transmission shaft is rotatably connected to the inner wall of the connecting wing plate, and the connecting wing plate is fixedly connected to the sealing cover shell, the driven gear is fixedly mounted on the surface of the transmission shaft, the driving gear is fixedly mounted on the surface of the output shaft, and the driving gear is meshed with the driven gear.

[0008] Preferably, the driving mechanism further includes a counterweight wheel, which is fixedly sleeved on the outer wall of the transmission shaft and has a cylindrical shape.

[0009] Preferably, the transmission mechanism includes a connecting cylinder, a driven transmission wheel, a driving transmission wheel, a belt, a connecting bearing, a rotary seal and a side seal cover, the connecting bearing and the rotary seal are fixedly mounted on the surface of the connecting cylinder, there are two connecting cylinders, and the two connecting cylinders are rotatably connected to the inner walls on both sides of the drag head suction shell through the connecting bearings and the rotary seals, the side seal cover is fixedly connected to both sides of the drag head suction shell, and the connecting cylinder is rotatably connected to the side seal cover through the connecting bearings and the rotary seal, the driven transmission wheel is fixedly mounted on the outer wall of the connecting cylinder, the driving transmission wheel is fixedly mounted on the outer walls of both ends of the transmission shaft, and the belt is mounted between the driven transmission wheel and the driving transmission wheel.

[0010] Preferably, the rolling blocking mechanism includes a blocking roller and a first through hole, the blocking roller is fixedly connected between the two connecting cylinders, and the first through hole is opened through the surface of the blocking roller.

[0011] Preferably, the rolling blocking mechanism also includes a centrifugal cylinder, a reinforcing column, a second through hole and a centrifugal chamber, the centrifugal cylinder is fixedly connected to the inner wall of the barrier roller, the reinforcing column is fixedly inserted into the inner wall of the centrifugal cylinder, and the reinforcing column is fixedly connected to the connecting cylinder, the second through hole is opened through the surface of the centrifugal cylinder, and the second through hole corresponds to the first through hole, the centrifugal chamber is arranged through the interior of the centrifugal cylinder, and the shape of the centrifugal chamber is a double-headed cone.

[0012] Preferably, the anti-collision mechanism includes a connecting block, an axle, a roller and an anti-skid tire, the connecting block is integrally arranged at the bottom of the mud suction shell of the drag head, the axle is rotatably connected to the inner wall of the connecting block, the roller is fixedly mounted on both ends of the axle, and the anti-skid tire is fixedly mounted on the surface of the axle.

[0013] Preferably, the scraping mechanism includes a scraper and an intercepting claw. There are two scrapers, and both scrapers are fixedly connected to the inner wall of the suction shell of the scraper head. The intercepting claw is integrally arranged on one side of the scraper, and the blocking roller is located between the two scrapers.

[0014] Preferably, the slag discharge mechanism includes a slag discharge port, a one-way plate and a reed. The slag discharge port is opened through the upper surface of the drag head mud suction shell, and the slag discharge port is located on one side of the scraper. The one-way plate is rotatably connected to the upper surface of the drag head mud suction shell, and the one-way plate is located on one side of the slag discharge port. The reed is fixedly connected to the surface of the one-way plate, and the reed is slidably connected to the drag head mud suction shell.

[0015] Preferably, the water pressure impact mechanism includes a water tank and a high-pressure water pipe, the water tank is fixedly connected to the bottom of the drag head suction shell, the high-pressure water pipe is fixedly connected to the top of the water tank, and a high-pressure nozzle is provided at the bottom of the water tank, and the water tank is located on the side of the roller away from the connection end.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The dredging equipment of the trailing suction hopper barge is equipped with a drag head suction shell, a top cover shell, a connecting wing plate, a sealing cover shell, a driving mechanism, a transmission mechanism, a rolling blocking mechanism, an anti-collision mechanism, a scraping mechanism, a slag discharge mechanism and a water pressure impact mechanism. It can clean the stones intercepted on the surface through the continuous rotation of the barrier drum and the cooperation of the scraping mechanism, avoid the blockage of the second through hole serving as the silt adsorption entrance, and ensure the smoothness of the silt adsorption.

[0018] 2. The dredging equipment of the trailing suction hopper barge, through the provided centrifugal drum, reinforcing column, second through hole and centrifugal chamber, can generate centrifugal force when the centrifugal drum rotates, so that large-mass stones that are easily blocked on the inner wall of the centrifugal chamber are easily subjected to a large centrifugal force and can be blocked by the second through hole, so that the stones gradually rotate away from the axis until they are discharged from the centrifugal chamber, ensuring that the silt particles with smaller volume and mass are subjected to less centrifugal force and can be directly sucked into the interior of the suction shell of the drag head through the second through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of the present invention;

[0020] FIG2 is a schematic structural diagram of the driving mechanism of the present invention;

[0021] FIG3 is an enlarged view of point A in FIG2 of the present invention;

[0022] FIG4 is a schematic structural diagram of a rolling blocking mechanism according to the present invention;

[0023] FIG5 is a schematic structural diagram of a slag discharge mechanism according to the present invention;

[0024] FIG6 is a side sectional view of a centrifuge cylinder according to the present invention;

[0025] FIG7 is a schematic diagram of the internal explosion structure of the rolling arresting mechanism of the present invention.

[0026] Figure: 1, drag head suction shell; 2, top cover; 3, connecting wing plate; 4, sealing cover; 501, motor frame; 502, drive motor; 503, output shaft; 504, transmission shaft; 505, driven gear; 506, driving gear; 507, counterweight wheel; 601, connecting cylinder; 602, driven transmission wheel; 603, driving transmission wheel; 604, belt; 605, connecting bearing; 606, rotary seal; 607, side seal cover ;701, barrier roller; 702, first through hole; 703, centrifugal cylinder; 704, reinforcing column; 705, second through hole; 706, centrifugal chamber; 801, connecting block; 802, wheel axle; 803, roller; 804, anti-skid tire; 901, scraper; 902, intercepting claw; 1001, slag discharge port; 1002, one-way plate; 1003, reed; 1101, water tank; 1102, high-pressure water pipe; 12, connecting end. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Please refer to Figure 1-7, a dredging equipment of a trailing suction vessel includes: a drag head suction shell 1 and a top cover shell 2, the top cover shell 2 is fixedly connected to one side of the drag head suction shell 1, both sides of the top of the drag head suction shell 1 are integrally provided with connecting wing plates 3, the top of the drag head suction shell 1 is fixedly connected to a sealing cover shell 4, a driving mechanism is provided inside the sealing cover shell 4, a transmission mechanism is provided on both sides of the drag head suction shell 1, a rolling blocking mechanism is provided between the two transmission mechanisms, an anti-collision mechanism is provided at the bottom of the drag head suction shell 1, a scraping mechanism is provided inside the drag head suction shell 1, and the top of the drag head suction shell 1 is fixedly connected to a sealing cover shell 4, a driving mechanism is provided inside the sealing cover shell 4, a transmission mechanism is provided on both sides of the drag head suction shell 1, a rolling blocking mechanism is provided between the two transmission mechanisms, an anti-collision mechanism is provided at the bottom of the drag head suction shell 1, a scraping mechanism is provided inside the drag head suction shell 1, and a A slag discharge mechanism is provided on the surface, a water pressure impact mechanism is provided at the bottom of one side of the rake head mud suction shell 1, and a connecting end 12 is provided on one side of the rake head mud suction shell 1. Through the rake head mud suction shell 1, top cover shell 2, connecting wing plate 3, sealing cover shell 4, driving mechanism, transmission mechanism, rolling blocking mechanism, anti-collision mechanism, scraping mechanism, slag discharge mechanism and water pressure impact mechanism, the stones intercepted on the surface can be cleaned by continuously rotating the blocking roller 701 in cooperation with the scraping mechanism, avoiding blockage of the second through hole 705 serving as the silt adsorption entrance, thereby ensuring smoothness during silt adsorption.

[0029] Wherein; the driving mechanism includes a motor frame 501, a driving motor 502, an output shaft 503, a transmission shaft 504, a driven gear 505 and a driving gear 506, the motor frame 501 is fixedly connected to the upper surface of the drag head suction shell 1, the drive motor 502 is fixedly mounted on the inner wall of the motor frame 501, the output shaft 503 is fixedly connected to the output end of the drive motor 502 through a coupling, the transmission shaft 504 is rotatably connected to the inner wall of the connecting wing plate 3, and the connecting wing plate 3 is fixedly connected to the sealing cover 4, the driven gear 505 is fixedly mounted on the surface of the transmission shaft 504, the driving gear 506 is fixedly mounted on the surface of the output shaft 503, and the driving gear 506 is meshed with the driven gear 505 to provide power for the rotation of the barrier drum 701 and the centrifugal drum 703.

[0030] The driving mechanism further includes a counterweight wheel 507, which is fixedly sleeved on the outer wall of the transmission shaft 504, and the counterweight wheel 507 is cylindrical in shape to improve the rotational inertia and prevent the connecting cylinder 601 from being easily blocked by silt and seawater.

[0031] Wherein; the transmission mechanism includes a connecting cylinder 601, a driven transmission wheel 602, a driving transmission wheel 603, a belt 604, a connecting bearing 605, a rotary seal 606 and a side seal cover 607, the connecting bearing 605 and the rotary seal 606 are fixedly mounted on the surface of the connecting cylinder 601, the number of the connecting cylinder 601 is two, and the two connecting cylinders 601 are rotatably connected to the inner walls on both sides of the drag head suction shell 1 through the connecting bearings 605 and the rotary seal 606, the side seal cover 607 is fixedly connected to both sides of the drag head suction shell 1, and the connecting cylinder 601 is rotatably connected to the side seal cover 607 through the connecting bearings 605 and the rotary seal 606, the driven transmission wheel 602 is fixedly mounted on the outer wall of the connecting cylinder 601, the driving transmission wheel 603 is fixedly mounted on the outer walls of both ends of the transmission shaft 504, and the belt 604 is installed between the driven transmission wheel 602 and the driving transmission wheel 603 to facilitate transmission and sealing.

[0032] Among them, the rolling blocking mechanism includes a blocking roller 701 and a first through hole 702. The blocking roller 701 is fixedly connected between the two connecting cylinders 601. The first through hole 702 is opened through the surface of the blocking roller 701 to facilitate the cleaning of stones blocking its surface by rotating the blocking roller 701.

[0033] Among them, the rolling blocking mechanism also includes a centrifugal cylinder 703, a reinforcing column 704, a second through hole 705 and a centrifugal chamber 706. The centrifugal cylinder 703 is fixedly connected to the inner wall of the barrier roller 701, the reinforcing column 704 is fixedly plugged into the inner wall of the centrifugal cylinder 703, and the reinforcing column 704 is fixedly connected to the connecting cylinder 601. The second through hole 705 is opened on the surface of the centrifugal cylinder 703, and the second through hole 705 corresponds to the first through hole 702. The centrifugal chamber 706 is set inside the centrifugal cylinder 703, and the shape of the centrifugal chamber 706 is as follows: It is a double-ended cone. Through the provided centrifugal cylinder 703, reinforcing column 704, second through hole 705 and centrifugal chamber 706, centrifugal force can be generated when the centrifugal cylinder 703 rotates, so that large-mass stones that are easily blocked on the inner wall of the centrifugal chamber 706 are easily subjected to a large centrifugal force and can be blocked by the second through hole 705, so that the stones gradually rotate away from the axis until they are discharged from the centrifugal chamber 706, ensuring that the silt particles with smaller volume and mass are subjected to less centrifugal force and can be directly sucked into the interior of the drag head suction shell 1 through the second through hole 705.

[0034] Among them, the anti-collision mechanism includes a connecting block 801, an axle 802, a roller 803 and an anti-skid tire 804. The connecting block 801 is integrally arranged at the bottom of the drag head suction shell 1, the axle 802 is rotatably connected to the inner wall of the connecting block 801, the roller 803 is fixedly mounted on both ends of the axle 802, and the anti-skid tire 804 is fixedly mounted on the surface of the axle 802 to convert the impact force into the rolling of the roller 803, thereby realizing force unloading.

[0035] Among them, the scraping mechanism includes a scraper 901 and an intercepting claw 902. There are two scrapers 901, and the two scrapers 901 are fixedly connected to the inner wall of the mud suction shell 1 of the drag head. The intercepting claw 902 is integrally arranged on one side of the scraper 901, and the blocking roller 701 is located between the two scrapers 901 to facilitate blocking stones hanging on the surface of the blocking roller 701.

[0036] Among them, the slag discharge mechanism includes a slag discharge port 1001, a one-way plate 1002 and a reed 1003. The slag discharge port 1001 is opened through the upper surface of the drag head mud suction shell 1, and the slag discharge port 1001 is located on one side of the scraper 901. The one-way plate 1002 is rotatably connected to the upper surface of the drag head mud suction shell 1, and the one-way plate 1002 is located on one side of the slag discharge port 1001. The reed 1003 is fixedly connected to the surface of the one-way plate 1002, and the reed 1003 is slidably connected to the drag head mud suction shell 1 to facilitate the discharge of stones hung by the intercepting claw 902.

[0037] Among them; the water pressure impact mechanism includes a water tank 1101 and a high-pressure water pipe 1102, the water tank 1101 is fixedly connected to the bottom of the drag head suction shell 1, the high-pressure water pipe 1102 is fixedly connected to the top of the water tank 1101, and a high-pressure nozzle is provided at the bottom of the water tank 1101, and the water tank 1101 is located on the side of the roller 803 away from the connecting end 12, so as to achieve anti-collision on one side of the water tank 1101.

[0038] Working principle: when in use, connect the drag head mud suction shell 1 with the mud suction pipe, start the drive motor 502, and the mud pump generates negative pressure through the mud suction pipe to the drag head mud suction shell 1. The drag head mud suction shell 1 continuously sucks the silt from one side through the barrier roller 701 and the centrifugal cylinder 703 and enters the mud suction pipe. When the silt passes through the barrier roller 701, the drive motor 502 drives the driving gear 506 to rotate through the output shaft 503, and the driving gear 506 drives the driven gear 505 to rotate, so that the transmission shaft 504 rotates, and the transmission shaft 504 drives the driving transmission wheel 603 to rotate. The driving transmission wheel 603 drives the driven transmission wheel 602 to rotate through the belt 604, so that the connecting cylinder 601 rotates, the barrier roller 701 and the synchronously rotating centrifugal cylinder 703. At this time, the silt on one side of the drag head mud suction shell 1 passes through the first through hole 702 and the second through hole 705 and enters the drag head mud suction shell 1. 1 and 10. The sludge at both ends of the centrifugal drum 703 is attracted by the negative pressure and enters the interior of the centrifugal chamber 706. As the centrifugal drum 703 rotates continuously to generate centrifugal force, the large-mass and easily blocked stones on the inner wall of the centrifugal chamber 706 are easily subjected to a large centrifugal force and are blocked by the second through hole 705, causing the stones to gradually rotate away from the axis until they are discharged from the centrifugal chamber 706 along the inner wall. The sludge particles with smaller volume and mass are less subjected to the centrifugal force and can be directly sucked into the interior of the drag head suction shell 1 through the second through hole 705, thereby ensuring that the first through hole 702 and the second through hole 705 are always unobstructed.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dredging device for a trailing suction hopper vessel, characterized in that: include: A rake head mud suction shell (1) and a top cover shell (2), wherein the top cover shell (2) is fixedly connected to one side of the rake head mud suction shell (1), both sides of the top of the rake head mud suction shell (1) are integrally provided with connecting wing plates (3), the top of the rake head mud suction shell (1) is fixedly connected to a sealing cover shell (4), a driving mechanism is arranged inside the sealing cover shell (4), both sides of the rake head mud suction shell (1) are provided with transmission mechanisms, a rolling blocking mechanism is arranged between the two transmission mechanisms, an anti-collision mechanism is arranged at the bottom of the rake head mud suction shell (1), a scraping mechanism is arranged inside the rake head mud suction shell (1), a slag discharge mechanism is arranged on the upper surface of the rake head mud suction shell (1), a water pressure impact mechanism is arranged at the bottom of one side of the rake head mud suction shell (1), and a connecting terminal (12) is arranged on one side of the rake head mud suction shell (1).

2. The dredging equipment of a trailing suction hopper vessel according to claim 1, characterized in that: The driving mechanism comprises a motor frame (501), a driving motor (502), an output shaft (503), a transmission shaft (504), a driven gear (505) and a driving gear (506); the motor frame (501) is fixedly connected to the upper surface of the drag head suction shell (1); the driving motor (502) is fixedly mounted on the inner wall of the motor frame (501); the output shaft (503) is fixedly connected to the output end of the driving motor (502) through a coupling; the transmission shaft (504) is rotatably connected to the inner wall of the connecting wing plate (3); the connecting wing plate (3) is fixedly connected to the sealing cover (4); the driven gear (505) is fixedly mounted on the surface of the transmission shaft (504); the driving gear (506) is fixedly mounted on the surface of the output shaft (503); and the driving gear (506) is meshedly connected with the driven gear (505).

3. The dredging equipment of a trailing suction hopper vessel according to claim 2, characterized in that: The driving mechanism further comprises a counterweight wheel (507), wherein the counterweight wheel (507) is fixedly sleeved on the outer wall of the transmission shaft (504), and the counterweight wheel (507) is cylindrical in shape.

4. The dredging equipment of a trailing suction hopper vessel according to claim 2, characterized in that: The transmission mechanism comprises a connecting cylinder (601), a driven transmission wheel (602), a driving transmission wheel (603), a belt (604), a connecting bearing (605), a rotary seal (606) and a side seal cover (607). The connecting bearing (605) and the rotary seal (606) are both fixedly mounted on the surface of the connecting cylinder (601). There are two connecting cylinders (601), and the two connecting cylinders (601) are rotatably connected to the mud suction device of the drag head through the connecting bearing (605) and the rotary seal (606). The side sealing covers (607) are fixedly connected to the inner walls of the shell (1) on both sides, and the connecting cylinder (601) is rotatably connected to the side sealing covers (607) through the connecting bearing (605) and the rotating seal (606). The driven transmission wheel (602) is fixedly installed on the outer wall of the connecting cylinder (601), the active transmission wheel (603) is fixedly installed on the outer walls of both ends of the transmission shaft (504), and the belt (604) is installed between the driven transmission wheel (602) and the active transmission wheel (603).

5. The dredging equipment of a trailing suction hopper vessel according to claim 4, characterized in that: The rolling blocking mechanism comprises a blocking roller (701) and a first through hole (702); the blocking roller (701) is fixedly connected between the two connecting cylinders (601); and the first through hole (702) is penetrated and opened on the surface of the blocking roller (701).

6. The dredging equipment of a trailing suction hopper vessel according to claim 5, characterized in that: The rolling blocking mechanism also includes a centrifugal cylinder (703), a reinforcing column (704), a second through hole (705) and a centrifugal chamber (706); the centrifugal cylinder (703) is fixedly connected to the inner wall of the barrier cylinder (701); the reinforcing column (704) is fixedly inserted into the inner wall of the centrifugal cylinder (703); the reinforcing column (704) is fixedly connected to the connecting cylinder (601); the second through hole (705) is penetrated and opened on the surface of the centrifugal cylinder (703); the second through hole (705) corresponds to the first through hole (702); the centrifugal chamber (706) is penetrated and arranged inside the centrifugal cylinder (703); and the shape of the centrifugal chamber (706) is a double-headed cone.

7. The dredging equipment of a trailing suction hopper vessel according to claim 1, characterized in that: The anti-collision mechanism comprises a connecting block (801), a wheel axle (802), a roller (803) and an anti-skid tire (804); the connecting block (801) is integrally arranged at the bottom of the drag head suction shell (1); the wheel axle (802) is rotatably connected to the inner wall of the connecting block (801); the roller (803) is fixedly mounted on both ends of the wheel axle (802); and the anti-skid tire (804) is fixedly mounted on the surface of the wheel axle (802).

8. The dredging equipment of a trailing suction hopper vessel according to claim 5, characterized in that: The scraping mechanism comprises a scraper frame (901) and an intercepting claw (902), the number of the scraper frames (901) is two, and the two scraper frames (901) are fixedly connected to the inner wall of the suction shell (1) of the drag head, the intercepting claw (902) is integrally arranged on one side of the scraper frame (901), and the blocking roller (701) is located between the two scraper frames (901).

9. The dredging equipment of a trailing suction hopper vessel according to claim 1, characterized in that: The slag discharge mechanism comprises a slag discharge port (1001), a one-way plate (1002) and a reed (1003); the slag discharge port (1001) is opened through the upper surface of the scraper head suction shell (1), and the slag discharge port (1001) is located on one side of the scraper frame (901); the one-way plate (1002) is rotatably connected to the upper surface of the scraper head suction shell (1), and the one-way plate (1002) is located on one side of the slag discharge port (1001); the reed (1003) is fixedly connected to the surface of the one-way plate (1002), and the reed (1003) is slidably connected to the scraper head suction shell (1).

10. The dredging equipment of a trailing suction hopper vessel according to claim 1, characterized in that: The water pressure impact mechanism comprises a water tank (1101) and a high-pressure water pipe (1102); the water tank (1101) is fixedly connected to the bottom of the drag head suction shell (1); the high-pressure water pipe (1102) is fixedly connected to the top of the water tank (1101); a high-pressure nozzle is arranged at the bottom of the water tank (1101); and the water tank (1101) is located on a side of the roller (803) away from the connection end (12).

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