CN118547738B

CN118547738B - Low-power-consumption efficient dredging dredger drag head and dredging dredger

Info

Publication number: CN118547738B
Application number: CN202411018660.2A
Authority: CN
Inventors: 黄双飞; 莫志芳; 毛晓翀; 石磊; 于亚南; 邹靖; 王松; 陈昱文; 贺选冰; 邹智军
Original assignee: Cccc Guanghang Dredging Co ltd; CCCC Guangzhou Dredging Co Ltd.
Current assignee: Cccc Guanghang Dredging Co ltd; CCCC Guangzhou Dredging Co Ltd.
Priority date: 2024-07-29
Filing date: 2024-07-29
Publication date: 2024-10-18
Anticipated expiration: 2044-07-29
Also published as: CN118547738A

Abstract

The invention discloses a drag head of a silt-reducing ship for low-power-consumption efficient dredging and the silt-reducing ship, and belongs to the technical field of channel dredging. The utility model provides a high-efficient desilting of low-power consumption is with reducing silt ship drag head, includes the harrow suction head that links to each other with the hull through the harrow arm, still includes: the pump mud conveying pipe is arranged on the rake suction head and is distributed along the rake arm and used for pumping and conveying sludge excavated by the rake suction head; the rake teeth are provided with a plurality of rake teeth and are equidistantly arranged in the rake suction head; the cutting mechanism is arranged at the front side of the harrow suction head and is used for cutting a silt layer in the channel; wherein, the harrow suction head is internally provided with a stone breaking mechanism for breaking the stone blocks intercepted at the harrow teeth, and the stone breaking mechanism is connected with the cutting mechanism; the invention cuts the mud layer adhered to the bottom of the channel to damage the integrity of the mud layer, reduces the digging resistance when the rake teeth move along with the ship body, further improves the digging efficiency, reduces the dredging energy consumption, and finally achieves the purpose of optimizing the drag head of the drag suction dredger.

Description

Low-power-consumption efficient dredging dredger drag head and dredging dredger

Technical Field

The invention relates to the technical field of channel dredging, in particular to a drag head of a silt-reducing ship for low-power-consumption and high-efficiency silt-reducing ship.

Background

In the construction of port channel projects, different types of dredger vessels are needed to be put into order to meet construction requirements, and the trailing suction hopper vessel is widely used due to strong adaptability. Due to the construction characteristics of the drag suction ship, the drag suction ship excavates along a channel, and drag trace lines are uniformly distributed, but due to the fact that the topography of the water bottom is complicated, uncertainty factors of drag heads are more in the excavating process, and problems of the drag heads can occur.

When the existing drag head dredges a silt layer at the bottom of a channel, some silt layers are bonded, so that when the drag head moves along with a ship, the digging resistance of the drag teeth is correspondingly reduced, the ship is required to be driven to move with larger energy consumption, and impurities such as stones are intercepted at the drag head along with the continuous use of the drag head, so that the drag teeth form an integral plate, the drag teeth cannot effectively scratch the water bottom, the application range of the drag suction dredger is limited, and the port channel construction cost is increased.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a drag head of a low-power-consumption and high-efficiency dredging dredger and the dredging dredger comprising the drag head.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a high-efficient desilting of low-power consumption is with reducing silt ship drag head, includes the harrow suction head that links to each other with the hull through the harrow arm, still includes:

the pump mud conveying pipe is arranged on the rake suction head and is distributed along the rake arm and used for pumping and conveying sludge excavated by the rake suction head;

the rake teeth are provided with a plurality of rake teeth and are equidistantly arranged in the rake suction head; and

The cutting mechanism is arranged at the front side of the harrow suction head and is used for cutting a silt layer in the channel;

the rake head is characterized in that a stone breaking mechanism is further arranged in the rake head and used for breaking stone blocks intercepted at the rake teeth, and the stone breaking mechanism is connected with the cutting mechanism.

Preferably, the slitting mechanism comprises a working shell fixedly arranged on the outer side of the rake suction head, a driving motor is fixedly arranged in the working shell, an output shaft of the driving motor is connected with a driving shaft, a U-shaped rod is fixedly arranged on the driving shaft, a sleeve ring is sleeved on the U-shaped rod, a connecting rod is fixedly arranged on the sleeve ring, one end, far away from the sleeve ring, of the connecting rod is connected with a sliding plate which is connected with the rake suction head in a sliding manner, and a cutter is fixedly arranged at the bottom of the sliding plate.

Preferably, the sliding plate and the cutter are positioned on the same plane and are obliquely arranged with the harrow suction head.

Preferably, the stone breaking mechanism comprises a plurality of arc plates which are connected to the drag suction head in a sliding manner, a connecting plate is fixedly arranged at the top of each arc plate, a movable rod is movably arranged between the connecting plate and the sliding plate, one end, far away from the connecting plate, of each arc plate is connected with a knocking hammer, each knocking hammer is arranged between two adjacent rake teeth, and a puncture rod is arranged on each knocking hammer.

Preferably, the rake teeth, the knocking hammer and the puncture rod are all made of high-strength steel.

Preferably, the rake teeth comprise a plurality of upper tooth bodies connected with the rake suction head, a rotating rod rotatably connected in the upper tooth bodies and lower tooth bodies which are arranged on the rotating rod and correspond to the upper tooth bodies one by one.

Preferably, the rotating rod and the driving shaft are provided with synchronous wheels, a synchronous belt is arranged between the two synchronous wheels, and the synchronous wheels and the synchronous belt are arranged in the working shell.

Preferably, the rotating rod is provided with a first groove for sliding the lower tooth body, a fixed rod is fixedly arranged in the first groove, the lower tooth body is provided with a second groove, an elastic telescopic rod is arranged between the second groove and the first groove, each lower tooth body is connected with a driving shaft, and a guide rod in sliding connection with the driving rope is fixedly arranged in the harrow suction head.

Preferably, the fixed block is fixedly arranged in the working shell, the inclined surface is arranged on the fixed block, the ejector rods which are movably propped against the inclined surface are fixedly arranged on the rotating rod, the tops of the plurality of upper tooth bodies are connected with the same sliding plate, the top of the sliding plate is fixedly provided with the sliding block, the inner wall of the rake suction head is provided with a sliding groove for sliding the sliding block, and an elastic element is arranged between the inner wall of the sliding groove and the sliding block.

Preferably, the inner wall of the harrow suction head is fixedly provided with a gas jet pipe, a plurality of gas jet holes facing the harrow teeth are formed in the gas jet pipe, the gas jet pipe is connected with a gas guide pipe paved along the harrow arm, and one end, far away from the harrow suction head, of the gas guide pipe is connected with an air compressor arranged on a ship body.

The silt-reducing ship comprises the silt-reducing ship drag head for low-power consumption and high-efficiency dredging.

Compared with the prior art, the invention provides the drag head of the silt-reducing ship for low-power consumption and high-efficiency silt-reducing ship, which has the following beneficial effects:

1. According to the drag head of the silt-reducing ship for low-power-consumption efficient dredging and the silt-reducing ship, the silt layers on the lower side of the channel are longitudinally and alternately cut through the cutting mechanism, so that the silt layers are not bonded, the integrity of the silt layers is damaged, the digging resistance of the rake teeth when moving along with the ship body is reduced, the digging efficiency is further improved, the dredging energy consumption is reduced, and finally the purpose of optimizing the drag head of the drag suction dredger is achieved.

2. The drag head of the low-power-consumption high-efficiency dredging dredger and the dredging dredger can drive the stone breaking mechanism to act through the working of the slitting mechanism, so that the stone breaking mechanism breaks the blocked stones at the drag teeth, the drag head device does not need to be lifted to above the water surface and cleaned by adopting manpower and machines like the existing drag head device when the blocking problem occurs, and therefore the drag head device can be enabled to operate in an effective working state for a long time, the dredging project construction period is shortened, and the construction cost of the dredging project is reduced.

3. The drag head of the low-power-consumption high-efficiency dredging dredger and the dredging dredger drive the lower tooth bodies of the drag teeth to swing back and forth through the working of the slitting mechanism, and further the silt layer slit by the slitting mechanism is started to be upwards dialed, so that the silt layer is loose and is not adhered with the bottom silt any more, the digging resistance of the drag teeth when moving along with the ship body is reduced, the digging efficiency is further improved, the dredging energy consumption is reduced, and finally the aim of optimizing the drag head of the drag suction dredger is achieved.

4. According to the drag head of the silt-reducing ship for low-power-consumption high-efficiency dredging and the silt-reducing ship, when the lower tooth body swings downwards along with the rotating rod to reset, the driving shaft winds the pull rope, so that the pull rope pulls the lower tooth body, the lower tooth body moves towards the other side of the rotating rod, the resistance of the lower tooth body when the lower tooth body rotates downwards along with the rotating rod is further reduced, and the dredging energy consumption is reduced.

5. According to the drag head of the low-power-consumption high-efficiency dredging dredger and the dredging dredger, when the drag teeth are used for starting up and pulling up a silt layer in a reciprocating manner, the ejector rod at the end part of the rotating rod is movably propped against the inclined surface of the fixed block, and the sliding block which is elastically arranged on the sliding plate is matched, so that the drag teeth move in a left-right reciprocating manner, the dredging area of the drag teeth along with the dredging area of the dredger body in a single navigation process is further improved, the pull rope swings left and right along with the drag teeth, the silt raked by the drag teeth is further crushed, the blocking of the drag head and the pump silt delivery pipe by the caked silt is avoided, and the continuous operation of channel dredging is ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of a rake head according to the present invention;

FIG. 3 is a schematic diagram of a rake tip according to the second embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a rake tip of the present invention;

FIG. 5 is a partially enlarged schematic illustration of the structure of portion A of FIG. 4 in accordance with the present invention;

FIG. 6 is a partially enlarged schematic illustration of the structure of portion B of FIG. 4 in accordance with the present invention;

FIG. 7 is a schematic view of the external structure of the drive shaft of the present invention;

FIG. 8 is a schematic cross-sectional view of a working housing of the present invention;

FIG. 9 is a schematic view of the structure of the tine of the present invention;

FIG. 10 is a schematic cross-sectional view of a rotary lever according to the present invention;

FIG. 11 is a schematic structural view of a gas lance of the present invention.

In the figure: 1. a hull; 2. a rake arm; 3. raking the suction head; 4. a pump mud pipe; 5. rake teeth; 501. an upper tooth body; 502. a rotating lever; 5021. a push rod; 503. a lower tooth body; 6. a working shell; 601. a driving motor; 602. a drive shaft; 603. a U-shaped rod; 604. a collar; 605. a connecting rod; 606. a slide plate; 607. a cutter; 7. an arc-shaped plate; 701. a connecting plate; 702. a movable rod; 703. knocking a hammer; 7031. a puncture rod; 8. a synchronizing wheel; 9. a first groove; 901. a fixed rod; 10. a second groove; 1001. an elastic telescopic rod; 11. a pull rope; 12. a guide rod; 13. a fixed block; 14. a sliding plate; 141. a slide block; 15. a chute; 151. an elastic element; 16. a gas lance; 161. a gas injection hole; 162. and an air duct.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1: referring to fig. 1 to 4, a drag head of a low-power-consumption high-efficiency dredging ship comprises a drag head 3 connected with a ship body 1 through a drag arm 2, and further comprises:

The pump mud conveying pipe 4 is arranged on the rake suction head 3 and is distributed along the rake arm 2, and is used for pumping and conveying the sludge excavated by the rake suction head 3;

the rake teeth 5 are provided with a plurality of rake teeth 5 and are equidistantly arranged in the rake suction head 3; and

The slitting mechanism is arranged at the front side of the harrow suction head 3 and is used for slitting a silt layer in a channel;

wherein, still be provided with rubble mechanism in the harrow suction head 3 for broken harrow tooth 5 department interception's lump stone, rubble mechanism links to each other with cutting the mechanism.

Specifically, the staff makes the harrow arm 2 drive the harrow suction head 3 to be attached to the silt layer at the bottom of the channel through lowering the harrow arm 2, then controls the ship body 1 to navigate along the channel, the harrow suction head 3 cuts the silt layer through the harrow teeth 5, and pumps the cut silt layer into the silt cabin of the ship body 1 through the silt conveying pipe 4, during the period, the slit mechanism longitudinally cuts the silt layer at the lower side of the channel at intervals, so that the silt layers are not adhered any more, the integrity of the silt layer is damaged, the excavation resistance of the harrow teeth 5 when moving along with the ship body 1 is reduced, the excavation efficiency is further improved, the dredging energy consumption is reduced, finally, the aim of optimizing the harrow head of the harrow suction dredge is achieved, and the slitting mechanism drives the stone breaking mechanism to act, so that the stone breaking mechanism breaks up the blocked stones at the harrow teeth 5 is not required to be lifted above the water surface when the blocking problem occurs like the conventional harrow head device, and the artificial and the harrow head device is adopted to clean, therefore the harrow head device can be operated in an effective working state for a long time, the dredging project is facilitated, the dredging project is shortened, and the dredging project is facilitated to reduce the construction cost.

Example 2: referring to fig. 1-7, a low-power consumption efficient dredging dredger drag head, on the basis of embodiment 1, further, the slitting mechanism includes a working shell 6 fixedly arranged on the outer side of a drag head 3, a driving motor 601 is fixedly arranged in the working shell 6, an output shaft of the driving motor 601 is connected with a driving shaft 602, a U-shaped rod 603 is fixedly arranged on the driving shaft 602, a lantern ring 604 is sleeved on the U-shaped rod 603, a connecting rod 605 is fixedly arranged on the lantern ring 604, one end, far away from the lantern ring 604, of the connecting rod 605 is connected with a sliding plate 606 which is slidably connected with the drag head 3, and a cutter 607 is fixedly arranged at the bottom of the sliding plate 606.

Further, the slide plate 606 and the cutter 607 are in the same plane and are inclined to the rake head 3.

Specifically, when the slitting mechanism works, the driving motor 601 is controlled to operate, the output shaft of the driving motor 601 drives the driving shaft 602 to rotate positively and negatively, the driving shaft 602 drives the lantern ring 604 to move through the U-shaped rod 603, the lantern ring 604 drives the sliding plate 606 to slide up and down at the position of the harrowing suction head 3 through the connecting rod 605, the sliding plate 606 drives the cutter 607 to move up and down when moving, the cutter 607 longitudinally cuts the silt layer at intervals at the lower side of the channel, the silt layers are not adhered, the integrity of the silt layers is damaged, the excavation resistance of the harrow teeth 5 when moving along with the ship body 1 is reduced, the excavation efficiency is further improved, the dredging energy consumption is reduced, the purpose of optimizing the harrow head of the harrowing suction dredge is finally achieved, meanwhile, the cutter 607 can press down the blockstones in the silt layer to a certain extent, the blockstones are prevented from being harrowed into the silt layer at the lower side by the harrowing suction head 3, the blocking of the harrowing head 3 or the pumping mud pipe 4 is caused, and the cutter 607 is obliquely arranged, the cutter is enabled to adapt to the sailing direction of the ship body 1, and the resistance of the cutter 607 when moving along with the harrowing head 3 is reduced.

Example 3: referring to fig. 1-7, a low-power-consumption efficient dredging dredger drag head is provided, on the basis of embodiment 2, further, stone breaking mechanism includes a plurality of arc plates 7 that sliding connection is on harrow suction head 3, the connecting plate 701 has been set firmly at the top of a plurality of arc plates 7, the activity is provided with movable rod 702 between connecting plate 701 and the slide 606, the one end that every arc plate 7 kept away from connecting plate 701 all is connected with and beats hammer 703, every beat hammer 703 is arranged between two adjacent harrow teeth 5, beat and be provided with puncture pole 7031 on the hammer 703.

Further, the rake teeth 5, the striking hammer 703 and the puncture rod 7031 are all made of high-strength steel materials.

Specifically, when the cutting mechanism works, the stone breaking mechanism is driven to act, when the sliding plate 606 moves up and down, the movable rod 702 drives the connecting plate 701 to reciprocate, the connecting plate 701 drives the arc plate 7 to reciprocate on the harrow suction head 3, the arc plate 7 breaks stones intercepted between the two harrow teeth 5 through the knocking hammer 703, the breaking effect on the stones can be improved by knocking the piercing rod 7031 on the hammer 703, the stone breaking mechanism breaks the stones blocked at the harrow teeth 5, the harrow head device does not need to be lifted to be above the water surface and cleaned by adopting manpower and tools when the blocking problem occurs like the existing harrow head device, so that the harrow head device can be operated in an effective working state for a long time, the construction period of dredging projects can be shortened, and the construction cost of the dredging projects can be reduced; the rake teeth 5, the knocking hammer 703 and the puncture rod 7031 are all made of high-strength steel materials, so that the service life of the crushing mechanism can be ensured.

Example 4: referring to fig. 7-9, a drag head of a dredging ship for low power consumption and high efficiency dredging is provided, and further, based on embodiment 3, the rake teeth 5 comprise a plurality of upper tooth bodies 501 connected with the rake head 3, a rotating rod 502 rotatably connected in the upper tooth bodies 501, and lower tooth bodies 503 arranged on the rotating rod 502 and in one-to-one correspondence with the upper tooth bodies 501.

Further, the rotating rod 502 and the driving shaft 602 are both provided with synchronous wheels 8, a synchronous belt is arranged between the two synchronous wheels 8, and the synchronous wheels 8 and the synchronous belt are arranged in the working shell 6.

Specifically, when the slitting mechanism works, the driving shaft 602 drives the rotating rod 502 to rotate in a positive and negative rotation manner through the synchronizing wheel 8 and the synchronous belt, and the rotating rod 502 drives the lower tooth body 503 to swing up and down in a reciprocating manner when rotating, so that the slit by the slitting mechanism is started to be pulled up, the slit is loose and is not adhered to the bottom slit, the excavating resistance of the rake teeth 5 when moving along with the ship body 1 is reduced, the excavating efficiency is further improved, the dredging energy consumption is reduced, and finally the aim of optimizing the drag head of the drag suction dredger is achieved.

Example 5: referring to fig. 1-10, on the basis of embodiment 4, further, a first groove 9 for sliding a lower tooth body 503 is formed on a rotating rod 502, a fixing rod 901 is fixedly arranged in the first groove 9, a second groove 10 is formed on the lower tooth body 503, an elastic telescopic rod 1001 is arranged between the second groove 10 and the first groove 9, a pull rope 11 is connected between each lower tooth body 503 and a driving shaft 602, and a guide rod 12 in sliding connection with the pull rope 11 is fixedly arranged in the rake suction head 3.

Specifically, when the lower tooth 503 swings downward along with the rotating rod 502 to reset, the driving shaft 602 winds the pull rope 11, so that the pull rope 11 pulls the lower tooth 503, the lower tooth 503 moves to the other side of the rotating rod 502, and then the resistance of the lower tooth 503 when rotating downward along with the rotating rod 502 is reduced, and the dredging energy consumption is reduced; it should be noted that, the bottom of the lower tooth 503 may be configured as an inclined plane, so as to further reduce the resistance of the lower tooth 503 moving down into the silt layer.

Example 6: referring to fig. 4 and 9, on the basis of embodiment 5, further, a fixed block 13 is fixed in the working shell 6, an inclined surface is provided on the fixed block 13, a ram 5021 which is movably abutted against the inclined surface is fixed on the rotating rod 502, the tops of the plurality of upper tooth bodies 501 are connected with the same sliding plate 14, a sliding block 141 is fixed on the top of the sliding plate 14, a sliding groove 15 for sliding the sliding block 141 is provided on the inner wall of the rake suction head 3, and an elastic element 151 is provided between the inner wall of the sliding groove 15 and the sliding block 141.

Specifically, when the rake teeth 5 start up and pull up the silt layer in a reciprocating manner, the ejector rod 5021 at the end part of the rotating rod 502 is movably propped against the inclined surface of the fixed block 13, and the slide block 141 which is elastically arranged on the slide plate 14 is matched, so that the rake teeth 5 reciprocate left and right, further the silt-reducing dredging area of the rake teeth 5 along with the hull 1 in single navigation is improved, the stay ropes 11 swing left and right along with the rake teeth 5, further the silt raked by the rake teeth 5 is crushed, the blocking of the rake suction head 3 and the pump mud conveying pipe 4 by the caked silt is avoided, and the continuous operation of channel dredging is ensured.

Example 7: referring to fig. 4 and 11, on the basis of embodiment 6, further, the inner wall of the rake head 3 is fixedly provided with an air ejector tube 16, a plurality of air ejector holes 161 facing to the rake teeth 5 are formed in the air ejector tube 16, an air duct 162 laid along the rake arm 2 is connected to the air ejector tube 16, and an air compressor arranged on the ship body 1 is connected to one end of the air duct 162 away from the rake head 3.

Specifically, the air compressor on the ship body 1 extracts air and converts the air into high-pressure air, the air duct 162 is used for guiding the air duct 16, so that the air duct 16 generates micro-bubbles through the air duct 161, the capability of pushing the sludge by the bubbles is fully utilized, the harrow suction head 3 is effectively started to suck the sludge in a harrowing manner, the harrow suction effect of the harrow suction head 3 is improved, the channel dredging effect is further improved, and the injected high-speed air flow impacts the sludge possibly silted in the second groove 10, so that the normal back movement of the lower tooth body 503 is avoided.

Example 8: referring to fig. 1, the invention further provides a silt reducing ship, which comprises the silt reducing ship drag head for low-power consumption and high-efficiency dredging, when the silt reducing ship is used, a cutting structure in the drag head is used for longitudinally cutting silt layers on the lower side of a channel, so that the silt layers are not adhered, the integrity of the silt layers is damaged, the dredging resistance of the drag teeth when moving along with the silt reducing ship is reduced, the dredging efficiency is further improved, and the dredging energy consumption is reduced.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The utility model provides a high-efficient desilting of low-power consumption is with reducing silt ship drag head, includes harrow suction head (3) that link to each other with hull (1) through harrow arm (2), its characterized in that still includes:

The pump mud conveying pipe (4) is arranged on the rake suction head (3) and is distributed along the rake arm (2) and used for pumping and conveying sludge excavated by the rake suction head (3);

the rake teeth (5) are arranged in the rake suction head (3) in a plurality of equal intervals; and

The cutting mechanism is arranged at the front side of the harrow suction head (3) and is used for cutting a silt layer in a channel;

wherein, the harrow suction head (3) is internally provided with a stone breaking mechanism for breaking the stone blocks intercepted at the harrow teeth (5), and the stone breaking mechanism is connected with a cutting mechanism;

The cutting mechanism comprises a working shell (6) fixedly arranged on the outer side of the rake suction head (3), a driving motor (601) is fixedly arranged in the working shell (6), an output shaft of the driving motor (601) is connected with a driving shaft (602), a U-shaped rod (603) is fixedly arranged on the driving shaft (602), a sleeve ring (604) is sleeved on the U-shaped rod (603), a connecting rod (605) is fixedly arranged on the sleeve ring (604), one end, far away from the sleeve ring (604), of the connecting rod (605) is connected with a sliding plate (606) which is connected with the rake suction head (3) in a sliding manner, and a cutter (607) is fixedly arranged at the bottom of the sliding plate (606);

The stone crushing mechanism comprises a plurality of arc plates (7) which are connected onto the rake suction head (3) in a sliding manner, a connecting plate (701) is fixedly arranged at the tops of the arc plates (7), a movable rod (702) is movably arranged between the connecting plate (701) and the sliding plate (606), one end, far away from the connecting plate (701), of each arc plate (7) is connected with a knocking hammer (703), each knocking hammer (703) is arranged between two adjacent rake teeth (5), and a piercing rod (7031) is arranged on each knocking hammer (703); the rake teeth (5), the knocking hammer (703) and the puncture rod (7031) are all made of high-strength steel.

2. The sludge reduction ship drag head for low-power consumption and high-efficiency dredging according to claim 1, wherein the sliding plate (606) and the cutter (607) are positioned on the same plane and are obliquely arranged with the drag head (3).

3. The dredging vessel drag head for low-power consumption and high-efficiency dredging according to claim 2, wherein the drag teeth (5) comprise a plurality of upper tooth bodies (501) connected with the drag head (3), rotating rods (502) rotatably connected in the upper tooth bodies (501), and lower tooth bodies (503) arranged on the rotating rods (502) and in one-to-one correspondence with the upper tooth bodies (501).

4. The sludge reduction ship drag head for low-power consumption and high-efficiency dredging according to claim 3, wherein the rotating rod (502) and the driving shaft (602) are both provided with synchronous wheels (8), a synchronous belt is arranged between the two synchronous wheels (8), and the synchronous wheels (8) and the synchronous belt are arranged in the working shell (6).

5. The sludge reduction ship drag head for low-power consumption and high-efficiency dredging according to claim 4, wherein a first groove (9) for sliding a lower tooth body (503) is formed in the rotating rod (502), a fixing rod (901) is fixedly arranged in the first groove (9), a second groove (10) is formed in the lower tooth body (503), an elastic telescopic rod (1001) is arranged between the second groove (10) and the first groove (9), a pull rope (11) is connected between each lower tooth body (503) and the driving shaft (602), and a guide rod (12) in sliding connection with the pull rope (11) is fixedly arranged in the drag head (3).

6. The sludge reduction ship drag head for low-power consumption and high-efficiency dredging according to claim 5, characterized in that a fixed block (13) is fixedly arranged in the working shell (6), an inclined surface is arranged on the fixed block (13), a push rod (5021) which is movably propped against the inclined surface is fixedly arranged on the rotating rod (502), the tops of the upper tooth bodies (501) are connected with the same sliding plate (14), the tops of the sliding plate (14) are fixedly provided with sliding blocks (141), sliding grooves (15) for the sliding of the sliding blocks (141) are formed in the inner wall of the drag head (3), and elastic elements (151) are arranged between the inner wall of each sliding groove (15) and the sliding blocks (141).

7. The sludge reduction ship drag head for low-power consumption and high-efficiency dredging according to claim 1, wherein an air jet pipe (16) is fixedly arranged on the inner wall of the drag suction head (3), a plurality of air jet holes (161) facing to the drag teeth (5) are formed in the air jet pipe (16), an air duct (162) paved along the drag arm (2) is connected to the air jet pipe (16), and one end, far away from the drag suction head (3), of the air duct (162) is connected with an air compressor arranged on the ship body (1).

8. A silt reducing ship, characterized by comprising the silt reducing ship drag head for low-power consumption and high-efficiency dredging according to any one of claims 1-7.