An in-situ ecological restoration system for dredged sediment

Abstract

The present invention discloses an in-situ ecological restoration system for dredged sediment, belonging to the technical field of dredging equipment. It includes a detection unit for detecting the properties of sludge and an execution unit arranged on the hull for sucking sludge. The execution unit includes a connecting pipe installed on the hull, a cutter suction head is installed at the end of the connecting pipe, and a cleaning tooth plate is also rotatably installed on the connecting pipe. The cleaning tooth plate is driven to rotate and intersects with the cutter suction head to clean the winding objects on the cutter suction head; for the restoration system provided by the present invention, by arranging the cleaning tooth plate on the connecting pipe, when the cleaning tooth plate is driven to rotate and intersects with the cutting teeth on the cutter suction head, the cleaning tooth plate can comb off the obstacles such as waterweeds wound on the cutter suction head, so that the mud inlet on the cutter suction head is not blocked, thereby ensuring that the dredging efficiency is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of dredging equipment, and specifically discloses an in-situ ecological restoration system for dredged sediment. Background Art

[0002] Dredging and silt removal of river channels can effectively improve water flow, reduce river channel blockage and siltation, reduce the risk of natural disasters such as floods, landslides and debris flows, and can also improve the flow distribution and hydrodynamic conditions of river channels, and reduce the damage of floods to the shoreline and ecosystem. The existing dredging methods are divided into: dry dredging and underwater dredging. Among them, for river channels with small flow rates without flood control, drainage and shipping functions, dry dredging can be used, while underwater dredging is to use dredging equipment equipped on the ship, and the dredging ship is used as a construction platform to operate the dredging equipment on the water surface to excavate the silt. For underwater dredging, it is further divided into grab dredging, pump suction dredging, cutter suction dredging and bucket wheel dredging. The restoration methods for polluted water body sediments are divided into two methods: in-situ and ex-situ restoration.

[0003] For example, the patent with the publication number CN213114776U, the publication date is May 4, 2021, which discloses an environmental protection dredging cutter for a cutter suction dredger with serrated blades, including a cutter body, serrated blades and bolts. The inner side of the upper part of the cutter body is a hub for connecting with the cutter shaft, and the lower part is a large circle. A plurality of cutter arms are evenly distributed between the large circle and the hub. The shape of the cutter arms is straight. Annular reinforcing ribs are provided between the cutter arms. Each cutter arm is processed with a mounting hole one and a positioning groove for installing the serrated blade. The serrated blade is processed with a mounting hole two and a positioning protrusion matching with the positioning groove. The cutter body and the serrated blade are connected by bolts. This dredging cutter can realize the dredging of sediment containing aquatic plants by the dredging cutter of the environmental protection cutter suction dredger, thereby improving the dredging range and construction efficiency of the environmental protection dredging of small cutter suction dredgers, and solving the problem that ordinary environmental protection dredging cutters cannot effectively excavate aquatic plants in the sediment.

[0004] For the existing cutter suction dredging mechanism including the above patent, in order to facilitate the crushing of harder silt to form slurry pumping, teeth are usually provided on the cutter to improve the crushing effect of the cutter. However, the setting of the teeth makes it easy for various underwater sundries such as waterweeds and dead branches to be wound around the cutter, resulting in the occlusion of the mud inlet on the cutter and affecting the suction of the slurry. Summary of the Invention

[0005] The purpose of the present invention is to provide a restoration system that can effectively avoid the occlusion of the mud inlet on the cutter caused by the winding of waterweeds on the cutter.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A dredged sludge in-situ ecological restoration system comprises a detection unit for detecting sludge properties and an execution unit arranged on a hull for sucking sludge, wherein the execution unit comprises a connecting pipe installed on the hull, a suction head is installed at the end of the connecting pipe, a cleaning tooth plate is rotatably installed on the connecting pipe, and the cleaning tooth plate is driven to rotate and intersect with the suction head to clean the entangled objects on the suction head.

[0008] The above-mentioned repair system, the suction head includes a cylinder with closed two ends, and a plurality of mud guide plates are fixedly connected to the outer wall of the cylinder. The plurality of mud guide plates are arranged in an array along the circumference of the cylinder. Each mud guide plate is fixedly connected to a cutting tooth on the side away from the cylinder, and the cutting teeth are arranged at equal intervals along the length direction of the mud guide plate. The area between the two mud guide plates on the cylinder is provided with a mud inlet.

[0009] In the above-mentioned repair system, a mounting seat is hinged at the end of the connecting pipe, one end of the cylinder is rotatably connected to the mounting seat, the rotation axis of the mounting seat relative to the connecting pipe is perpendicular to the central axis of the cylinder, and a driving member is provided at the end of the connecting pipe to drive the mounting seat to rotate.

[0010] In the above-mentioned repair system, an outer cover is fixedly connected to the mounting seat, and the outer cover is arranged on the outside of the mud guide plate.

[0011] In the above-mentioned repair system, the cleaning tooth plate includes a rotating shaft and a cleaning rod fixed to the outer wall of the rotating shaft. The rotating shaft is rotatably connected to the outer cover. The width of the cleaning rod is smaller than the spacing between two adjacent cutting teeth on the mud guide plate. A clearance groove is provided on the outer cover at the position corresponding to the cleaning rod.

[0012] In the above-mentioned repair system, the cleaning rod includes a first rod and a second rod hinged to each other, one end of the first rod is fixedly connected to the rotating shaft, the other end of the first rod is rotatably connected to the second rod, and a torsion spring is mounted on the connecting shaft between the first rod and the second rod. When the torsion spring is in a natural state, the central axes of the first rod and the second rod coincide.

[0013] In the above repair system, one side of the outer cover corresponding to the rotating shaft is bent inwardly, and the connection between the first rod and the second rod is located in the corresponding yielding groove.

[0014] In the above-mentioned repair system, a hydraulic motor is fixedly connected to the mounting seat, a spur gear is installed on the output shaft of the hydraulic motor, an inner gear ring is fixedly connected to the end of the cylinder connected to the mounting seat, the spur gear and the inner gear ring are meshed with each other, and a transmission assembly is also provided on the mounting seat to connect the rotating shaft with the hydraulic motor.

[0015] The above-mentioned repair system, the transmission assembly includes a transmission shaft rotatably installed in the mounting seat, one end of the transmission shaft is transmission-connected to the output shaft of the hydraulic motor through a bevel gear set, and the other end of the transmission shaft is transmission-connected to the rotating shaft through another bevel gear set.

[0016] In the above-mentioned repair system, a limit assembly is arranged in each first rod, and the cleaning rod has a first stroke and a second stroke as it rotates with the rotating shaft. When in the first stroke, the limit assembly locks the second rod so that it cannot rotate relative to the first rod. When in the second stroke, the limit assembly releases the lock on the second rod.

[0017] In the above technical scheme, the repair system provided by the present invention, by arranging a cleaning tooth plate on the connecting pipe, when the cleaning tooth plate is driven to rotate and intersects with the cutting teeth on the suction head, the cleaning tooth plate can comb out obstacles such as water plants entangled on the suction head, so that the mud inlet on the suction head is not blocked, thereby ensuring that the dredging efficiency is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the front structure provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the transmission relationship between the cylinder and the sleeve provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of the outer cover provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the positional relationship between the cleaning tooth plate and the suction head provided in an embodiment of the present invention;

[0023] Figure 5 A cross-sectional view of the suction head when the cleaning rod provided by the embodiment of the present invention is in the first stroke;

[0024] Figure 6 A cross-sectional view of the suction head when the cleaning rod provided by the embodiment of the present invention is in the second stroke;

[0025] Figure 7 A cross-sectional view of a first rod and a second rod in a connected state provided by an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of the transmission relationship between the hydraulic motor and the casing provided in an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Connecting pipe; 11. Mud suction pipe; 12. Mounting base; 121. Hydraulic motor; 122. Straight gear; 123. Transmission shaft; 124. Bevel gear set; 13. Hydraulic rod; 2. Cutter suction head; 21. Cylinder; 211. Mud inlet; 212. Internal gear ring; 22. Mud guiding plate; 23. Cutting teeth; 3. Cleaning tooth plate; 31. Rotating shaft; 311. Sleeve; 312. Inner shaft; 3121. Arc groove; 32. Cleaning rod; 321. First rod; 322. Second rod; 323. Connecting shaft; 3231. Insertion hole; 4. Outer cover; 41. Relief groove; 5. Adjusting rod; 51. Spring. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, so it cannot be understood as a limitation to the present invention. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] As Figures 1-8 shown, a dredging bottom mud in-situ ecological restoration system provided by an embodiment of the present invention includes a detection unit for detecting the properties of sludge and an execution unit for sucking sludge provided on a hull. The execution unit includes a connecting pipe 1 installed on the hull. A cutter suction head 2 is installed at the end of the connecting pipe 1. A cleaning tooth plate 3 is also rotatably installed on the connecting pipe 1. The cleaning tooth plate 3 is driven to rotate and intersects with the cutter suction head 2 to clean the winding objects on the cutter suction head 2.

[0032] Specifically, before dredging work is carried out, sampling and analysis are required to determine the pollution situation of the river channel and formulate a corresponding dredging plan. The repair system proposed in the present invention includes a detection unit and an execution unit, wherein the detection unit is used for sampling and analysis before dredging, including a sampler (such as a tube sampler), a positioning device (such as a GPS), an analysis device (such as a particle size analyzer, a spectrometer, a gas chromatograph-mass spectrometer, etc.) and a data processing device (such as a computer). When dredging work is carried out, the depth to which the sludge needs to be cleaned is judged according to the sampling results, that is, the sludge with heavier pollution needs to be transferred to the treatment site for ex situ repair, while the sludge with lighter pollution can be repaired in situ (such as chemical repair-oxidation-reduction, physical isolation, etc.) The execution unit is some parts required for dredging, which includes a connecting pipe 1 rotatably installed on the hull. The connecting pipe 1 is retracted or lowered by the cooperation of the hanger and the steel cable set on the hull, so that the end of the connecting pipe 1 away from the hinge point can be extended into the water. For the convenience of description, the end of the connecting pipe 1 extending into the water is its lower end. The lower end of the connecting pipe 1 is rotatably installed with a suction head 2 (that is, the above-mentioned reamer). When the suction head 2 is driven to rotate, it can transport the sludge into its own interior and mix the sludge with water to form mud for easy pumping. In order to facilitate the suction head 2 to crush clay, gravel and even rocks, the suction head 2 is provided with cutting teeth 23, and the suction head 2 is provided with a mud inlet for the mud to enter its interior. The suction head 2 has a plurality of cutting teeth 23 arranged in a circumferential array on the suction head 2. When the suction head 2 is driven to rotate, the sludge in the area thereof is continuously mixed with water to form sludge. The sludge enters the interior of the suction head 2 through the mud inlet 211. In addition, a mud suction pipe 11 is provided in the connecting pipe 1. The mud inlet end of the mud suction pipe 11 extends into the interior of the suction head 2 to facilitate the suction of the sludge in the suction head 2. This is a prior art and can be directly applied without further elaboration. Different from the prior art, a cleaning tooth plate 3 is installed on one side of the suction head 2. Optionally, a fixing seat is installed at the lower end of the connecting pipe 1. The suction head 2 and the cleaning tooth plate 3 are both installed on the fixing seat. Preferably, the cleaning tooth plate 3 is rotatably connected to the fixing seat. , and the rotation axes of the cleaning tooth plate 3 and the screw suction head 2 are parallel. The cleaning tooth plate 3 is a plate with a plurality of long grooves arranged in parallel on the surface. The long grooves correspond to the cutting teeth 23 one by one, and the width of the long grooves is greater than the width of the cutting teeth 23 on the screw suction head 2. Moreover, when the cleaning tooth plate 3 is driven to rotate, it can intersect with the screw suction head 2, and the cutting teeth 23 on the screw suction head 2 can pass through the long grooves. In this process, the cleaning tooth plate 3 is equivalent to a comb, which can transfer obstacles such as water plants on the screw suction head 2 to the cleaning tooth plate 3, and move away from the screw suction head 2 under the movement of the cleaning tooth plate 3. When the cleaning tooth plate 3 rotates to the side away from the screw suction head 2 and the end is tilted upward, the water plants fall off the cleaning tooth plate 3 under the scouring force of water;Obviously, since the cutting teeth 23 are arranged in a circumferential array along the suction head 2, in order to ensure that the waterweeds hanging on each cutting tooth 23 arranged circumferentially on the suction head 2 are all cleaned, it is assumed that there are X groups of cutting teeth 23 arranged in a circumferential array along the suction head 2, and the rotation speed of the cleaning tooth plate 3 is at least X times that of the suction head 2, so as to ensure that the cleaning tooth plate 3 can intersect with each group of cutting teeth 23 when driven to rotate, and the rotation speed of the cleaning tooth plate 3 is greater than that of the suction head 2, so that the cleaning tooth plate 3 can comb out the waterweeds entangled on the suction head 2. ;

[0033] The repair system provided by the embodiment of the present invention, by arranging a cleaning tooth plate 3 on the connecting pipe 1, when the cleaning tooth plate 3 is driven to rotate and intersects with the cutting teeth 23 on the suction head 2, the cleaning tooth plate 3 can comb out obstacles such as water plants entangled on the suction head 2, so that the mud inlet 211 on the suction head 2 is not blocked, thereby ensuring that the dredging efficiency is not affected.

[0034] Furthermore, the suction head 2 includes a cylinder 21 with closed ends, and a plurality of mud guide plates 22 are fixedly connected to the outer wall of the cylinder 21. The plurality of mud guide plates 22 are arranged in a circumferential array along the cylinder 21. A cutting tooth 23 is fixedly connected to the side of each mud guide plate 22 away from the cylinder 21. The cutting teeth 23 are arranged at equal intervals along the length direction of the mud guide plate 22. A mud inlet 211 is provided in the area between the two mud guide plates 22 on the cylinder 21.

[0035] Furthermore, a mounting seat 12 is hingedly connected to the end of the connecting tube 1, and the mounting seat 12 is also the fixed seat in the above embodiment. One end of the cylinder 21 is rotatably connected to the mounting seat 12. The rotation axis of the mounting seat 12 relative to the connecting tube 1 is perpendicular to the central axis of the cylinder 21. A driving member for driving the mounting seat 12 to rotate is provided at the end of the connecting tube 1.

[0036] Specifically, during the dredging of the river channel, affected by factors such as water depth and silt thickness, the rotation angle of the connecting pipe 1 will be different, which will result in different angles of the cutting suction head 2 relative to the horizontal plane. When the angle between the cutting suction head 2 and the horizontal plane is too large, the contact area between the cutting suction head 2 and the silt is smaller, resulting in low dredging efficiency. In addition, since the dredging efficiency is uncertain (the larger the contact area between the cutting suction head 2 and the silt, the higher the dredging efficiency), it is not easy to control the travel speed of the hull. In this embodiment, if Figure 2 , Figure 3 and Figure 4 As shown, the suction head 2 includes a cylinder 21 with both ends closed, the above-mentioned mud suction pipe 11 extends into the inside of the cylinder 21 from one end, and a plurality of mud inlets 211 are provided on the cylinder 21. In order to make it easier for the mud to enter the inside of the cylinder 21 through the mud inlets 211 when the cylinder 21 rotates, mud guide plates 22 are arranged in a circumferential array on the outer wall of the cylinder 21. The mud guide plates 22 are all arranged along the axial direction of the cylinder 21, and the mud guide plates 22 are all inclined toward the rotation direction of the cylinder 21.Figure 5 and Figure 6 In Figure 6 , the cylinder 21 drives the mud guiding plate 22 to rotate counterclockwise. When the mud guiding plate 22 is at the lower part of the cylinder 21 in the gravity direction, it inclines to the right, while when the mud guiding plate 22 is at the upper part of the cylinder 21 in the gravity direction, the mud guiding plate 22 inclines to the left. With such a setting, when the cylinder 21 is driven to rotate self - rotatably, the mud guiding plate 22 can guide the sludge into the cylinder 21; the above - mentioned cutting teeth 23 are fixedly connected to one end of the mud guiding plate 22 away from the cylinder 21, and the cutting teeth 23 are arranged at equal intervals along the length direction of the mud guiding plate 22 where they are located. Preferably, the included angle between the cutting teeth 23 and the mud guiding plate 22 is an acute angle, so that the broken soil can move towards the side where the mud guiding plate 22 is located, and thus be guided into the interior of the cylinder 21 by the mud guiding plate 22; in addition, in this embodiment, the lower end of the connecting pipe 1 is hinged with a mounting seat 12, one end of the cylinder 21 is rotatably connected to the mounting seat 12, the rotation axis of the mounting seat 12 is horizontally arranged, and the rotation axis of the mounting seat 12 is perpendicular to the central axis of the cylinder 21. In this way, the cylinder 21 can not only rotate self - rotatably but also revolve synchronously with the mounting seat 12. A driving member for driving the mounting seat 12 to rotate is also provided on the connecting pipe 1. Optionally, the driving member is a hydraulic rod 13 installed at the lower end of the connecting pipe 1. Both ends of the hydraulic rod 13 are rotatably connected to the connecting pipe 1 and the mounting seat 12 respectively. In addition, a driving mechanism for driving the cylinder 21 to rotate is provided on the mounting seat 12. This is prior art and can be directly applied without further elaboration; obviously, to ensure that the connection between the mud suction pipe 11 and the cylinder 21 is not affected during the revolution of the cylinder 21, the part of the mud suction pipe 11 connected to the cylinder 21 is a flexible pipe, so as to adapt to the angle adjustment of the cylinder 21 relative to the connecting pipe 1.

[0037] Before driving the cylinder 21 to rotate self - rotatably, the lower end of the connecting pipe 1 is placed into the water through a hanging bracket and the angle of the connecting pipe 1 is adjusted. During this process, the mounting seat 12 is driven to rotate by the hydraulic rod 13 to adjust the inclination angle of the cylinder 21 relative to the connecting pipe 1, so as to ensure that the cylinder 21 can always maintain a horizontal state, increase the contact area between the cylinder 21 and the sludge, improve the dredging efficiency, and at the same time ensure that the river channel can be leveled after dredging; as Figure 3 and Figure 4 shown, in the figure, the cleaning tooth plate 3 is installed on the left side of the cutter suction head 2. During dredging, the cutter suction head 2 rotates counterclockwise, while the cleaning tooth plate 3 is driven to rotate clockwise. When the cleaning tooth plate 3 rotates to intersect with the cutting teeth 23 on the cutter suction head 2, it can clean the waterweeds hanging on the cutting teeth 23 of the cutter suction head 2. When the cleaning tooth plate 3 rotates to incline towards the upper left, the waterweeds can float towards the water surface under the action of buoyancy.

[0038] Furthermore, an outer cover 4 is fixedly connected to the mounting seat 12, and the outer cover 4 covers the outside of the mud guiding plate 22.

[0039] Specifically, in order to reduce the diffusion of sludge when the cylinder 21 rotates, an outer cover 4 is fixedly connected to the mounting seat 12, and the outer cover 4 covers the outer side of the upper part of the cylinder 21, such as Figure 3 As shown, the outer cover 4 is an arc-shaped structure. If the cylinder 21 is in a horizontal state, the side outer cover 4 covers its upper part, and the mud formed by the rotation of the cylinder 21 and the mud guide plate 22 can be blocked by the outer cover 4 and extracted by the mud suction pipe 11 to the greatest extent, thereby reducing the outward diffusion of the mud and realizing environmentally friendly dredging. In this embodiment, in order to avoid the setting of the outer cover 4 from obstructing the rotation of the cleaning tooth plate 3, the cleaning tooth plate 3 is arranged on one side of the suction head 2 (on the left or right side of the central axis of the suction head 2).

[0040] In another embodiment of the present invention, the cleaning tooth plate 3 includes a rotating shaft 31 and a cleaning rod 32 fixed to the outer wall of the rotating shaft 31, the rotating shaft 31 is rotatably connected to the outer cover 4, the width of the cleaning rod 32 is smaller than the spacing between two adjacent cutting teeth 23 on the mud guide plate 22, and a clearance groove 41 is opened at the position corresponding to the cleaning rod 32 on the outer cover 4.

[0041] Specifically, in the above-mentioned embodiment, the waterweed transferred to the cleaning tooth plate 3 is completely separated from the cleaning tooth plate 3 by the buoyancy of water. However, due to the weight of the waterweed and the rotation speed of the cleaning tooth plate 3, the waterweed cannot be separated from the cleaning tooth plate 3 in time, causing the waterweed to be entangled with the cutting teeth 23 again as the cleaning tooth plate 3 rotates. In this embodiment, the cleaning tooth plate 3 includes a rotating shaft 31, such as Figure 3 and Figure 4 As shown, the rotating shaft 31 is rotatably mounted on the left inner wall of the outer cover 4, and the rotating shaft 31 is at the opening position of the outer cover 4. A cleaning rod 32 is fixedly connected to the outer wall of the rotating shaft 31. The cleaning rod 32 is arranged perpendicular to the rotating shaft 31, and the cleaning rod 32 is arranged at equal intervals along the length direction of the rotating shaft 31. The cleaning rod 32 is a flat rod body, and its width is smaller than the interval between two adjacent cutting teeth 23 on the mud guide plate 22 to avoid interference between the cleaning rod 32 and the cutting teeth 23. In addition, a clearance groove 41 is opened at the position corresponding to the cleaning rod 32 on the outer cover 4, and the width of the clearance groove 41 is greater than the width of the cleaning rod 32. Figure 3 When the rotating shaft 31 is driven to rotate, the cleaning rod 32 can enter the interior of the outer cover 4 from the outside of the outer cover 4 through its corresponding give way groove 41. During this process, the water plants on the cleaning rod 32 can be blocked by the outer cover 4, thereby preventing the water plants from being entangled on the cutting teeth 23 again as the cleaning rod 32 rotates to the inside of the outer cover 4.

[0042] Furthermore, the cleaning rod 32 includes a first rod 321 and a second rod 322 hinged to each other, one end of the first rod 321 is fixedly connected to the rotating shaft 31, the other end of the first rod 321 is rotatably connected to the second rod 322, and a torsion spring is mounted on the connecting shaft 323 between the first rod 321 and the second rod 322. When the torsion spring is in a natural state, the central axes of the first rod 321 and the second rod 322 coincide.

[0043] Preferably, one side of the outer cover 4 corresponding to the rotating shaft 31 is bent inward, and the connection between the first rod 321 and the second rod 322 is located in the corresponding clearance groove 41 .

[0044] Specifically, in the above embodiment, by allowing the cleaning rod 32 to pass through the clearance groove 41 provided on the outer cover 4, the outer cover 4 can block the water plants on the cleaning rod 32 outside of it. However, during the process of the cleaning rod 32 rotating toward the outer surface of the outer cover 4 driven by the rotating shaft 31, the angle between the cleaning rod 32 and the outer cover 4 will gradually decrease. If the water plants fail to float up in time, they will be easily clamped by the cleaning rod 32 and the outer cover 4, thereby hindering the rotation of the cleaning rod 32 and even causing the cleaning rod 32 or the outer cover 4 to deform, so that the cleaning rod 32 loses its cleaning function for the twisting suction head 2. In this embodiment, the cleaning rod 32 includes a first rod 321 and a second rod 322. One end of the first rod 321 is fixedly connected to the rotating shaft 31, and the second rod 322 is rotatably connected to the other end of the first rod 321 through a connecting shaft 323. A torsion spring is mounted on the connecting shaft 323. When the torsion spring is in a natural state, the first rod 321 and the second rod 322 are in the same straight line. In this way, when the cleaning rod 32 is driven to rotate toward the outer surface of the outer cover 4, when the resistance of the second rod 322 is too large, it will rotate relative to the first rod 321, that is, it is in a Figure 6 In the state shown, at this time, the second rod 322 can push the water plants and the like upward along the outer wall of the outer cover 4 during the process of rotating with the first rod 321, thereby preventing the cleaning rod 32 from being damaged due to the obstruction of rotation; in specific implementation, in order to prevent the water plants from being entangled at the connection between the first rod 321 and the second rod 322, the outer cover 4 is bent inwardly at one side corresponding to the rotating shaft 31 to form an arc, and similarly, the clearance groove 41 on the outer cover 4 extends toward the bending position, as shown in FIG. Figure 3 As shown, the connection position of the first rod 321 and the second rod 322 is in the clearance groove 41, so that when the shaft 31 drives the first rod 321 and the second rod 322 to rotate, the bending part of the outer cover 4 can block the aquatic plants from moving toward the connection between the first rod 321 and the second rod 322. Obviously, in order to avoid that the end of the first rod 321 connected to the second rod 322 is blocked by the aquatic plants and cannot pass through the clearance groove 41 during the rotation of the first rod 321 with the shaft 31, it is necessary to reduce the length of the first rod 321 extending out of the outer cover 4 during the rotation process as much as possible, that is, the hinge position of the first rod 321 and the second rod 322 should be as close to the shaft 31 as possible.

[0045] In yet another embodiment provided by the present invention, a hydraulic motor 121 is fixedly connected to the mounting base 12. A spur gear 122 is mounted on the output shaft of the hydraulic motor 121. An internal gear ring 212 is fixedly connected to one end of the cylinder 21 that is connected to the mounting base 12. The spur gear 122 meshes with the internal gear ring 212. A transmission assembly for drivingly connecting the rotating shaft 31 and the hydraulic motor 121 is further provided on the mounting base 12.

[0046] Optionally, the transmission assembly includes a transmission shaft 123 rotatably mounted in the mounting base 12. One end of the transmission shaft 123 is drivingly connected to the output shaft of the hydraulic motor 121 through a bevel gear set 124, and the other end of the transmission shaft 123 is drivingly connected to the rotating shaft 31 through another bevel gear set 124.

[0047] Specifically, since the hydraulic motor 121 has strong adaptability to environmental conditions, and when a low-speed hydraulic motor 121 is used, the speed is low and the torque is large, and it can be directly connected to the working mechanism without setting a speed reduction device; in this embodiment, a hydraulic motor 121 is fixedly connected to the mounting base 12. A spur gear 122 is sleeved on the output shaft of the hydraulic motor 121. An internal gear ring 212 is fixedly connected to one end of the cylinder 21 that is connected to the mounting base 12. The internal gear ring 212 is coaxially arranged with the cylinder 21. The spur gear 122 meshes with the internal gear ring 212 to drive the cylinder 21. The oil pipe for conveying hydraulic oil can be arranged inside the connecting pipe 1, and the connecting pipe 1 is used to protect it to avoid winding and damage; in addition, a transmission assembly is further provided on the mounting base 12. The transmission assembly includes a transmission shaft 123 rotatably mounted on the mounting base 12. As Figure 2 and Figure 8 shown, one end of the transmission shaft 123 penetrates into the inside of the mounting base 12. Bevel gears are fixedly connected to both ends of the transmission shaft 123. Another bevel gear is also sleeved on the output shaft of the hydraulic motor 121. The hydraulic motor 121 and the transmission shaft 123 are drivingly connected through the bevel gear set 124. Similarly, the other end of the transmission shaft 123 and the rotating shaft 31 are also drivingly connected through the bevel gear set 124. In this way, the power of the hydraulic motor 121 is transmitted to the rotating shaft 31; for the setting of the speed ratio between the cylinder 21 and the rotating shaft 31, it can be achieved by adjusting the transmission ratio of the spur gear 122 and the internal gear ring 212 and the transmission ratio of each bevel gear set 124. This is the prior art and can be directly applied without further elaboration; the rotating shaft 31 and the hydraulic motor 121 are drivingly connected through a mechanical structure, that is, a single driving member is used to drive the cylinder 21 and the rotating shaft 31 to rotate simultaneously, which can ensure that the cylinder 21 and the rotating shaft 31 maintain a stable speed ratio for a long time; obviously, in order to prevent the bevel gear set 124 from being contaminated with mud and affecting the transmission, the thickness of the end of the outer cover 4 connected to the mounting base 12 can be thickened. As Figure 8 shown, the transmission shaft 123 and the bevel gear set 124 connecting it to the rotating shaft 31 are both arranged inside the outer cover 4.

[0048] In another embodiment provided by the present invention, a limiting component is arranged in each first rod 321. The cleaning rod 32 rotates with the rotating shaft 31 and has a first stroke and a second stroke. When in the first stroke, the limiting component locks the second rod 322 so that it cannot rotate relative to the first rod 321. When in the second stroke, the limiting component releases the locking of the second rod 322.

[0049] Specifically, in the above embodiment, the cleaning rod 32 includes a first rod 321 and a second rod 322 that are hinged to each other. The relative angle between the first rod 321 and the second rod 322 is maintained by a torsion spring arranged on their connecting shaft 323, so that the cleaning rod 32 can deform when blocked during rotation to avoid damage to the cleaning rod 32 and the outer cover 4. However, when there is a large amount of aquatic plants or a stuck stone between two adjacent cutting teeth 23 on the mud guiding plate 22, the second rod 322 will also deflect relative to the first rod 321 due to being blocked, resulting in a reduction in the cleaning effect of the cleaning rod 32. In this embodiment, a limiting component is arranged in each first rod 321. The limiting component is used to lock the second rod 322 on the first rod 321 so that it cannot rotate. The rotation process of the cleaning rod 32 with the rotating shaft 31 is divided into a first stroke and a second stroke, and both the first stroke and the second stroke are half a circle.

[0050] Figure 5 and Figure 6 In the first stroke, the cleaning rod 32 is on the right side of the vertical plane where the central axis of the rotating shaft 31 is located, that is, the cleaning rod 32 is above or below the right of the rotating shaft 31.

[0051] In the second stroke, the cleaning rod 32 is on the left side of the vertical plane where the central axis of the rotating shaft 31 is located, that is, the cleaning rod 32 is below or above the left of the rotating shaft 31.

[0052] In the first stroke, the limiting component locks the second rod 322 so that it cannot rotate relative to the first rod 321. In the second stroke, the limiting component is in an unlocked state. When the second rod 322 is subjected to a large resistance, it can rotate relative to the first rod 321 and gradually store energy in the torsion spring.

[0053] Optionally, the limiting assembly includes an adjusting rod 5 arranged in the first rod 321, the adjusting rod 5 can slide along the length direction of the first rod 321, the connecting shaft 323 is fixedly connected to the second rod 322, the first rod 321 is provided with a mounting hole matching the connecting shaft 323, the outer wall of the connecting shaft 323 is provided with a plug hole 3231 matching the adjusting rod 5 along its own radial direction, the first rod 321 is provided with a spring 51 for maintaining the relative position of the adjusting rod 5 and the first rod 321, the first rod 321 is provided with a cylindrical cavity for accommodating the spring 51, the outer wall of the adjusting rod 5 is formed with an annular protrusion along its own circumference, one end of the spring 51 is connected to the annular protrusion on the adjusting rod 5, and the spring 51 The other end is connected to the inner wall of the cylindrical cavity, so that the adjusting rod 5 has a tendency to separate from the connecting shaft 323 under the action of the elastic force of the spring 51; the rotating shaft 31 includes a sleeve 311 and an inner shaft 312, the sleeve 311 is sleeved on the outside of the inner shaft 312, the above-mentioned hydraulic motor 121 is transmission-connected with the sleeve 311, in the bevel gear set 124 driven by both the transmission shaft 123 and the rotating shaft 31, a bevel gear is fixedly connected to one end of the transmission shaft 123 corresponding to the sleeve 311, and the other bevel gear is sleeved on the outside of the sleeve 311, and the two bevel gears are meshed with each other, and the inner shaft 312 is fixedly connected to the outer cover 4, and the inner shaft 312 is provided with an arc groove 3121 in the circumference thereof to match the adjusting rod 5, as shown in FIG. Figure 7 As shown, the arc groove 3121 is a half arc, and the arc groove 3121 corresponds to the above-mentioned second stroke. The end of the adjusting rod 5 away from the connecting shaft 323 extends into the sleeve 311 and contacts the inner shaft 312. Both sides of the arc groove 3121 are beveled, so that the adjusting rod 5 can more easily slide from the arc groove 3121 to the outer wall of the inner shaft 312 during the process of rotating with the sleeve 311 and the process of circumferential sliding of the adjusting rod 5 along the inner shaft 312.

[0054] When the sleeve 311 is driven to drive the first rod 321 and the second rod 322 to rotate, when the first rod 321 is in the above-mentioned first stroke, the adjusting rod 5 is restricted by the inner shaft 312, and its end is inserted into the insertion hole 3231 on the connecting shaft 323, so that the second rod 322 is locked on the first rod 321. At this time, the spring 51 is in a stretched state; and when the first rod 321 rotates to the above-mentioned second stroke, the end of the adjusting rod 5 away from the connecting shaft 323 corresponds to the arc groove 3121, as shown in FIG. Figure 7 As shown, at this time, the spring 51 pulls the adjusting rod 5 away from the connecting shaft 323, releasing the lock on the second rod 322, so that the second rod 322 is blocked and can rotate relative to the first rod 321.

[0055] With such a setting, in the first stroke, the cleaning rod 32 can withstand sufficient resistance without deformation to ensure the cleaning effect on the entanglements on the suction head 2. In the second stroke, when the resistance on the cleaning rod 32 is too large, it can deform and push aquatic plants and the like upward along the outer wall of the outer cover 4, thereby preventing the cleaning rod 32 and the outer cover 4 from being damaged.

[0056] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An in-situ ecological restoration system for dredged sludge, comprising a detection unit for detecting sludge properties and an execution unit arranged on a hull for sucking sludge, the execution unit comprising a connecting pipe installed on the hull, a suction head installed at the end of the connecting pipe, characterized in that: A cleaning tooth plate is also rotatably installed on the connecting pipe, and the cleaning tooth plate is driven to rotate and intersect with the cutting suction head to realize the cleaning of the entangled materials on the cutting suction head. The cutting suction head comprises a cylinder with closed two ends, and a plurality of mud guide plates are fixedly connected to the outer wall of the cylinder, and the plurality of mud guide plates are arranged in an array along the circumference of the cylinder, and a cutting tooth is fixedly connected to the side of each mud guide plate away from the cylinder, and the cutting teeth are arranged at equal intervals along the length direction of the mud guide plate, and a mud inlet is provided in the area between the two mud guide plates on the cylinder, and a mounting seat is hingedly connected to the end of the connecting pipe, and one end of the cylinder is rotatably connected to the mounting seat, and the mounting seat is perpendicular to the central axis of the cylinder relative to the rotation axis of the connecting pipe, and a driving member for driving the mounting seat to rotate is arranged at the end of the connecting pipe, and an outer cover is fixedly connected to the mounting seat, and the outer cover is arranged on the outside of the mud guide plate, and the cleaning tooth plate comprises a rotating shaft And a cleaning rod fixedly connected to the outer wall of the rotating shaft, the rotating shaft is rotatably connected to the outer cover, the width of the cleaning rod is smaller than the spacing between two adjacent cutting teeth on the mud guide plate, and a clearance groove is provided on the outer cover at a position corresponding to the cleaning rod. The cleaning rod includes a first rod and a second rod hinged to each other, one end of the first rod is fixedly connected to the rotating shaft, and the other end of the first rod is rotatably connected to the second rod, and a torsion spring is mounted on the connecting shaft of the first rod and the second rod. When the torsion spring is in a natural state, the central axes of the first rod and the second rod coincide, and one side of the outer cover corresponding to the rotating shaft is bent inwardly, and the connection between the first rod and the second rod is in the corresponding clearance groove, and the clearance groove on the outer cover extends toward the bending position. In the process of the rotating shaft driving the first rod and the second rod to rotate, the bending part of the outer cover can prevent the aquatic plants from moving toward the connection between the first rod and the second rod.

2. The dredged mud in-situ ecological restoration system according to claim 1, characterized in that: A hydraulic motor is fixedly connected to the mounting seat, a spur gear is installed on the output shaft of the hydraulic motor, an inner gear ring is fixedly connected to one end of the cylinder connected to the mounting seat, the spur gear and the inner gear ring are meshed with each other, and a transmission assembly for connecting the rotating shaft with the hydraulic motor is also provided on the mounting seat.

3. The dredged mud in-situ ecological restoration system according to claim 2 is characterized in that: The transmission assembly comprises a transmission shaft rotatably mounted in a mounting seat, one end of the transmission shaft is transmission-connected to an output shaft of a hydraulic motor via a bevel gear set, and the other end of the transmission shaft is transmission-connected to a rotating shaft via another bevel gear set.

4. The dredged mud in-situ ecological restoration system according to claim 1, characterized in that: A limit assembly is arranged in each first rod, and the cleaning rod has a first stroke and a second stroke as the rotating shaft rotates. When in the first stroke, the limit assembly locks the second rod so that it cannot rotate relative to the first rod. When in the second stroke, the limit assembly releases the lock on the second rod.

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