Dredging device

Abstract

A pump body is arranged in a shell, the shell is controlled to rise and fall through a suspension mechanism, the shell comprises a bearing body, two hemispherical bodies and two groups of flow guide bodies, the bearing body is of a cylindrical structure, and the pump body is arranged in the bearing body; wherein one hemispherical body is respectively connected with one end of the bearing body and the sling, and the other hemispherical body is connected with the other end of the bearing body and is provided with a suction channel; the two flow guide bodies symmetrically and rotationally sleeve the positions, close to the two ends, of the bearing body, a plurality of flow guide blades are arranged on the flow guide bodies, and the arc-shaped faces of the two flow guide bodies, the extension faces of the arc-shaped faces of the two flow guide bodies and the arc-shaped faces of the two semispherical bodies form an ellipsoid structure, so that underwater resistance can be reduced, and the influence of turbulent flow on the stability of the pump body is reduced; the water flow guiding capability can be enhanced through the flow guiding blades on the flow guiding body, and the impact force of the water flow on the shell is reduced, so that the influence of the water flow impact on the bearing body is reduced, and the large-angle rotation and inclination of the bearing body caused by the water flow impact are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy projects, in particular to a silt clearing device. Background Art

[0002] In the field of water conservancy projects, reservoirs are core facilities for water resource regulation. Their siltation poses a direct threat to the lifespan of these projects and their ecological safety. Reservoir siltation has long hampered the safe and efficient operation of water conservancy projects, leading to a series of risks such as loss of reservoir capacity, reduced safety, and ecological degradation. For example, siltation reduces flood control storage capacity, endangering reservoir flood control safety; silt accumulation in front of dams alters the load and operating conditions of water retaining structures, affecting the safe operation of these structures and ancillary facilities; and siltation also reduces the useful storage capacity, shortening the lifespan of reservoirs and reducing their regulatory performance. Furthermore, silt itself is a non-point source pollutant and a major carrier of organic matter, ammonium ions, phosphates, and heavy metals. Pollutants attached to silt enter reservoirs, exacerbating reservoir water pollution. Furthermore, siltation alters the habitat of aquatic life and can cause eutrophication of water within reservoirs and upstream rivers, jeopardizing the aquatic ecology and environmental balance. Therefore, the problem of reservoir siltation needs to be dealt with urgently in order to achieve the sustainable use of reservoirs, extend their service life, and ensure flood control operations and water supply safety.

[0003] At present, most of the equipment for reservoir dredging uses suspended dredging equipment with a rigid suspension arm structure to complete silt cleaning. Such suspended dredging equipment with a rigid suspension arm structure generally includes a floating platform floating on the water surface, a rigid fixed telescopic arm and a dredging pump structure. The floating platform floats on the water surface of the reservoir, and the dredging pump is suspended by the fixed telescopic arm on the floating platform. The dredging pump is slowly lowered into the water by adjusting the extension and angle of the telescopic arm. After the dredging pump contacts the silt, it sucks and discharges the silt to the surface of the water. However, such dredging equipment with a rigid suspension arm structure has a large mass and volume of its telescopic arm and is limited by The telescopic distance of the telescopic arm results in a shallow depth to which the dredging pump can be lowered, which makes it difficult to apply to dredging work in deep water conditions. Compared with the above-mentioned rigid suspension arm structure, there is currently a suspended dredging equipment that uses a flexible suspension arm to lower the dredging pump. The flexible suspension arm, such as a wire rope, is connected to the winch through one end of the wire rope, and the other end is connected through a hanging point on the dredging pump structure. The coordinated structure of the wire rope and the winch is not only smaller in size and mass, but also more flexible in layout. The lowering length of the wire rope is longer and more flexible, and can be applied to water depths of 0.5m~100m, covering 95% of reservoir working conditions.

[0004] However, at present, the length of the flexible steel wire rope continues to increase when the dredging pump is lowered, and the pump body of the dredging pump is impacted by the water flow, which causes the flexible suspension arm to easily swing in the horizontal direction, affecting the precise positioning of the dredging pump. When the swing amplitude is large, there is even a risk of the dredging pump colliding with the reservoir bottom or the slope. Summary of the Invention

[0005] The object of the present invention is to provide a dredging device which can greatly reduce the impact of water flow on a dredging pump and suppress the horizontal swing of a flexible suspension arm when the dredging pump is lowered.

[0006] The technical solution of the present invention is: A dredging device comprises: a shell, a suspension mechanism and a pump body, wherein the suspension mechanism is arranged above the water surface through a hull, and the pump body is arranged in the shell. The suspension mechanism is connected to the shell through its sling, and is used to control the rise and fall of the pump body. The shell comprises: a carrier body, a cylindrical structure, and the pump body is fixedly arranged inside the carrier body; a first hemispherical body, a circular surface of which is connected to one end of the carrier body, and the curved surface of the first hemispherical body is connected to the sling via a connecting structure; a second hemispherical body, a circular surface of which is connected to the other end of the carrier body. A suction channel is provided along the central axis of the second hemispherical body, and the suction channel is connected to the suction port of the pump body and is directly connected through a sealing cover, thereby reducing energy loss and improving dredging efficiency; a sealing cover is connected between the suction channel and the suction port of the pump body; two groups of guide bodies are both truncated cones with curved sides, and the two groups of guide bodies are symmetrically rotated and sleeved near the two ends of the carrier body, and a plurality of guide vanes are provided on the curved surface of each group of guide bodies, so that the curved surfaces of the two groups of guide bodies, the extended surfaces of the curved surfaces of the two groups of guide bodies, the curved surface of the first hemispherical body, and the curved surface of the second hemispherical body form an ellipsoidal structure. The ellipsoidal structure can reduce underwater resistance, reduce the impact of turbulence on the stability of the pump body, and can enhance the water flow guidance ability through the guide vanes on the guide body, and reduce the impact force of the water flow on the shell, thereby reducing the impact of the water flow impact on the carrier body and avoiding large-angle rotation and tilting of the carrier body due to the water flow impact.

[0007] Furthermore, a spacing space is provided between the two groups of the guide bodies, and the spacing space is located in the middle of the carrier. A guide pipe is provided in the middle of the carrier, and the guide pipe is used to guide the sewage pipe of the pump body to the outside of the carrier. The guide pipe is a curved pipe structure, which guides the sewage pipe to extend toward the water surface. The guide pipe with a curved pipe structure can avoid interference between the sewage pipe and the guide body, and at the same time reduce the vibration of the sewage pipe caused by the impact of the water flow. In addition, a plurality of floating air bags are bundled at intervals on a section of the sewage pipe close to the outlet, and the floating air bags are used to make the section of the sewage pipe close to the outlet float on the water surface, and the outlet is connected to the collection equipment.

[0008] Furthermore, a fin stabilizer assembly is provided in the middle of the carrier, with two symmetrically arranged fins and a teardrop-shaped cross-section. The fin stabilizers can suppress the oscillation caused by underwater lateral currents, keeping the pump body in a vertical operating posture.

[0009] Furthermore, a ball groove is defined in the middle of the curved surface of the first hemispherical body. The connecting structure is a plate structure and includes: a ball head, configured to cooperate with the ball groove to rotatably connect the connecting structure and the first hemispherical body; and a plurality of hydraulic damping rods arranged in a circular array on the connecting structure, with fixed ends connected to the connecting structure and telescopic ends connected to the curved surface of the first hemispherical body via connectors. The mating structure of the ball head and the ball groove allows the housing to undergo slight swings. The hydraulic damping rods absorb the vibration energy of the slight swings, thus preventing the housing from experiencing hard impacts and large swings. Furthermore, the plurality of hydraulic damping rods arranged in a circular array evenly distribute the load to accommodate water impacts from different directions.

[0010] Furthermore, the connecting member includes: a first ring body, which is fixedly mounted on the arc surface of the first hemispherical body through a first connecting arm, and the center of the first ring body coincides with the center of the first hemispherical body; a second ring body, which is concentrically mounted in the first ring body through a second connecting arm, and is spaced apart from the first ring body; a plurality of connecting rods, which are arranged one by one at the end of the telescopic end of each hydraulic damping rod, and each connecting rod is provided with a slot hole, and the second ring body passes through the slot hole on each connecting rod. When the shell rotates, the second ring body and the slot are slidably connected to adapt to the rotation of the shell. If necessary, a buffer spring can be installed on the second ring body on both sides of the connecting rod. One end of the buffer spring is connected to the connecting rod and does not interfere with the movement of the connecting rod. The other end of the buffer spring abuts against the second connecting arm. When the shell rotates, the buffer spring on the connecting rod offsets the rotation of the buffer shell. The first ring body is stably connected to the arc surface of the first hemispherical body through the multiple first connecting arms on the first ring body. The second ring body is stably connected to the first ring body through the multiple second connecting arms. The double ring structure of the first ring body and the second ring body is used to disperse stress and improve the durability and connection stability of the connecting piece structure.

[0011] Furthermore, the diameter of the slot is larger than the cross-sectional diameter of the second ring body. The second ring body can slide in the slot, allowing the hydraulic damping rod to fine-tune its angle during extension and retraction, thereby improving the flexibility of the structure and preventing jamming.

[0012] Furthermore, the suspension mechanism includes: an annular body, mounted diagonally above the hull via a suspension arm; multiple mounting arms, equally spaced apart, mounted on the annular body; each mounting arm equipped with a winch, each equipped with a sling, each equipped with a servo motor, and each sling connected to the connecting structure. The multiple slings are connected to the connecting structure to distribute multiple force control points. When the hull tilts due to water flow, the corresponding winch on each sling is independently driven by a servo motor, enabling differentiated retraction and extension of the slings, thereby rapidly leveling the hull.

[0013] Furthermore, a plurality of fixing arms are provided on the plate surface of the connection structure away from the carrier, and the plurality of fixing arms are perpendicular to the plate surface of the carrier.

[0014] Furthermore, each group of guide bodies is divided into multiple sub-structures along its height. Each sub-structure is slidably connected to the circumference of the carrier body, and each sub-structure rotates independently. The multiple independently sliding sub-structures can locally adapt to changes in water flow, further reducing overall resistance.

[0015] Furthermore, the system also includes a control device comprising: a tilt sensor, mounted on a side surface of the connecting structure near the water surface, for monitoring the tilt angle of the connecting structure; a control center, mounted on the annular body, for receiving monitoring signals from the tilt sensor; the control center communicating with each of the servo motors to adjust the servo motor's speed and torque in real time based on the received tilt data. Feedback from the tilt sensor drives the servo motors to coordinate adjustments, achieving dynamic balance of the connecting structure. This balance is then maintained by multiple evenly spaced hydraulic damping rods at the bottom of the connecting structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 0. The two groups of guide bodies of the present invention are symmetrically rotatably sleeved near the two ends of the carrier, and the structures of the two groups of guide bodies are designed to be frustums with curved side surfaces, so that the curved surfaces of the two groups of guide bodies, the extended surfaces of the curved surfaces of the two groups of guide bodies, and the curved surfaces of the first hemispherical body and the second hemispherical body form an ellipsoidal structure. The fluid characteristics of the ellipsoidal structure are utilized to reduce underwater resistance and the impact of turbulence on the stability of the pump body. The guide blades on the guide body enhance the ability to guide the water flow and reduce the impact force of the water flow on the shell, thereby reducing the impact of the water flow impact on the carrier, avoiding large-angle rotation and tilting of the carrier due to the water flow impact, and ensuring the positioning accuracy of the lowering of the pump body.

[0017] 1. The connecting structure and the first hemispherical body of the present invention are connected through a spherical ball groove structure, and a plurality of hydraulic damping rods are evenly arranged between the connecting structure and the first hemispherical body. The matching structure of the ball head and the ball groove allows the shell to swing slightly. The hydraulic damping rod absorbs the vibration energy of the slight swing, thereby avoiding hard impact and large swing of the shell. In addition, the hydraulic damping rods arranged in a ring array evenly disperse the load to adapt to the impact of water flow in different directions.

[0018] 2. The annular main body of the present invention is evenly provided with multiple winches through multiple mounting arms, and each winch is equipped with a sling and a servo motor, and each sling is connected to the connecting structure. Multiple slings are connected to the connecting structure to distribute multiple force control points on the connecting structure. The inclination sensor monitors the inclination angle of the connecting structure and transmits it to the control center; the control center adjusts the speed and torque of each servo motor in real time based on the received inclination data, thereby achieving dynamic balance of the connecting structure. The multiple evenly arranged hydraulic damping rods at the bottom of the connecting structure 6 ensure that the shell can obtain sufficient support force when water flow impact occurs. The independent servo drive of the corresponding winch on each sling is used to achieve differentiated retraction and extension of the sling, thereby quickly leveling the shell and ensuring that the pump body maintains a vertical operating posture, thereby improving the efficiency of dredging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the connection relationship between the suspension mechanism and the connecting structure and the first hemispherical body of the present invention.

[0021] Figure 3 It is a schematic diagram of the top view of the suspension mechanism of the present invention.

[0022] Figure 4 It is a schematic diagram of the top view of the connection structure of the present invention.

[0023] Figure 5 Schematic diagram of the positional relationship among the first hemispherical body, the first ring body, the second ring body and the connecting rod of the present invention.

[0024] Figure 6 It is a right view of the schematic diagram of the carrier structure of the present invention.

[0025] Figure 7 Schematic diagram of the third body-conducting structure of the present invention.

[0026] Figure 8 Schematic diagram of the internal structure of the carrier of the present invention.

[0027] Figure 9 for Figure 2 An enlarged view of the structural schematic diagram of the middle A area.

[0028] Figure 10 for Figure 8 An enlarged view of the structural schematic diagram of the middle B area.

[0029] Among them, 1. carrier, 11. fin stabilizer assembly, 12. guide tube, 13. annular slide rail, 2. first hemispherical body, 21. ball groove, 22. first ring body, 221. first connecting arm, 23. second ring body, 231. second connecting arm, 3. second hemispherical body, 31. suction channel, 4. guide body, 41. first guide body, 411. first guide blade, 42. second guide body, 421. second guide blade, 43. third guide body, 431. third guide blade, 5. suspension mechanism, 51. annular body, 52. boom, 53. winch, 54. servo motor, 55. sling, 6. connecting structure, 61. sphere, 62. fixed arm, 63. control device, 7. hydraulic rod, 71. connecting rod, 711. slot, 8. sewage pipe, 81. floating airbag, 9. pump body, 10. sealing cover. DETAILED DESCRIPTION

[0030] The following combination Figures 1 to 10 , a detailed description of the specific embodiments of the present invention is provided. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the present invention.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] It should be noted that the circuit connections involved in the present invention all adopt conventional circuit connection methods and do not involve any innovation.

[0033] Example like Figure 1 As shown, a dredging device includes: a shell, a suspension mechanism 5 and a pump body 9. The suspension mechanism 5 is set above the water surface through the hull, and the pump body 9 is set in the shell. The suspension mechanism 5 is connected to the shell through a sling 55 to control the rise and fall of the pump body 9. Figure 1As shown, the shell includes: a carrier 1, a first hemispherical body 2, a second hemispherical body 3 and two groups of guide bodies 4. The carrier 1 is a cylindrical structure. Figure 8 As shown, the pump body 9 is fixedly arranged inside the carrier 1, and the pump body 9 can be fixed inside the carrier 1 through a fixed frame; the circular surface of the first hemispherical body 2 is connected to one end of the carrier 1, and the arc surface of the first hemispherical body 2 is connected to the sling 55 through the connecting structure 6, as shown in FIG. Figure 1 As shown, the circular surface of the first hemispherical body 2 and the second hemispherical body 3 is consistent with the circular surface size of the carrier 1; Figure 8 As shown, the circular surface of the second hemispherical body 3 is connected to the other end of the carrier 1. A suction channel 31 is opened along the central axis of the second hemispherical body 3, and the suction channel 31 is connected to the suction port of the pump body 9. A sealing cover 10 is connected between the suction channel 31 and the suction port of the pump body 9. The direct connection through the sealing cover reduces energy loss and improves dredging efficiency. Figure 1 and Figure 2 As shown, two groups of guide bodies 4 are symmetrically rotated and sleeved on the positions near the two ends of the carrier 1, as shown in FIG. Figure 7 As shown, each group of guide bodies 4 is provided with a plurality of guide blades on the arc surface, such as Figure 1 and Figure 2 As shown, both sets of guide bodies 4 are frustums with curved side surfaces, so that the curved surfaces of the two sets of guide bodies 4, the extensions of the curved surfaces of the two sets of guide bodies 4, the curved surfaces of the first hemispherical body 2, and the curved surfaces of the second hemispherical body 3 form an ellipsoidal structure. This ellipsoidal structure can reduce underwater resistance and the impact of turbulent flow on the stability of the pump body 9. The guide vanes on the guide bodies 4 can also enhance the ability to guide the water flow and reduce the impact of the water flow on the housing, thereby reducing the impact of the water flow on the carrier body 1 and preventing the carrier body 1 from rotating or tilting at large angles due to the water flow.

[0034] In some embodiments, as Figure 1 As shown, a spacing space is provided between the two groups of guide bodies 4. The spacing space is located in the middle of the carrier body 1. A guide pipe 12 is provided in the middle of the carrier body 1. The guide pipe 12 is used to guide the sewage pipe 8 of the pump body 9 to the outside of the carrier body 1. The guide pipe 12 is a curved pipe structure, which guides the sewage pipe 8 to extend toward the water surface. The curved guide pipe 12 can prevent the sewage pipe 8 from interfering with the guide body 4, while reducing the vibration of the sewage pipe 8 caused by the impact of the water flow. In addition, a plurality of floating air bags 81 are bundled at intervals on the section of the sewage pipe 8 near the outlet. The floating air bags 81 make the section of the sewage pipe 8 near the outlet float above the water surface, and the outlet is connected to the collection equipment.

[0035] In some embodiments, as Figure 2 and Figure 6As shown, a fin stabilizer assembly 11 is positioned in the middle of the carrier 1. The two fins of this assembly 11 are symmetrically arranged, and their cross-sections are teardrop-shaped. These stabilizers suppress swaying caused by underwater lateral currents, maintaining the pump body 9 in an upright operating position. The smoothly transitioning geometry of the teardrop-shaped cross-section prevents flow separation, reduces vortex generation, and stabilizes the flow field around the fins. The fin stabilizers in this embodiment are fixed, leveraging their fluid properties to generate reverse lift under the action of lateral currents, thereby suppressing lateral swaying of the pump body.

[0036] In some embodiments, as Figure 2 As shown, a ball groove 21 is provided in the middle of the curved surface of the first hemispherical body 2. The connecting structure 6 is a plate structure and includes: a ball head 6 and multiple hydraulic damping rods 7. The ball head 61 is arranged in conjunction with the ball groove 21 to enable a rotational connection between the connecting structure 6 and the first hemispherical body 2. The multiple hydraulic damping rods 7 are arranged in a circular array on the connecting structure 6, with the fixed ends connected to the connecting structure 6 and the telescopic ends connected to the curved surface of the first hemispherical body 2 via connectors. The matching structure of the ball head 61 and the ball groove 21 allows the housing 1 to oscillate slightly. The hydraulic damping rods 7 absorb the vibration energy of the minor oscillation, thus preventing the housing 1 from experiencing hard impact and large-scale oscillation. The multiple hydraulic damping rods 7 arranged in a circular array evenly distribute the load to accommodate water impact from different directions.

[0037] In some embodiments, as Figure 2 、 Figure 5 and Figure 9As shown, the connecting member includes: a first ring body 22, a second ring body 23 and a plurality of connecting rods 71. The first ring body 22 is fixedly mounted on the arc surface of the first hemispherical body 2 by a first connecting arm 221, and the center of the first ring body 22 coincides with the center of the first hemispherical body 2; the second ring body 23 is concentrically mounted in the first ring body 22 by a second connecting arm 231, and is spaced apart from the first ring body 22; a plurality of connecting rods 71 ​​are arranged one by one at the end of the telescopic end of each hydraulic damping rod 7, and each connecting rod 71 is provided with a slot 711, and the second ring body 23 passes through the slot 711 on each connecting rod 71. When the shell 1 rotates, the second ring body 23 and the slot 711 are slidingly connected to adapt to the rotation of the shell 1. If necessary, a buffer spring can be installed on the second ring body 23 on both sides of the connecting rod 71. One end of the buffer spring is connected to the connecting rod 71 and does not interfere with the movement of the connecting rod 71. The other end of the buffer spring is in contact with the second connecting arm 231. When the shell 1 rotates, the buffer spring on the connecting rod 71 offsets the rotation of the buffer shell 1. The first ring body 22 is stably connected to the arc surface of the first hemispherical body 2 through the multiple first connecting arms 221 on the first ring body 22. The second ring body 23 is stably connected to the first ring body 22 through the multiple second connecting arms 231. The double ring structure of the first ring body 22 and the second ring body 23 is used to disperse stress and improve the durability and connection stability of the connecting piece structure.

[0038] In some embodiments, as Figure 9 As shown, the diameter of the slot 711 is larger than the cross-sectional diameter of the second ring body 23. This allows the second ring body 23 to slide in the slot 711, allowing the hydraulic damping rod 7 to fine-tune its angle during extension and contraction, thereby improving the flexibility of the structure and preventing jamming.

[0039] In some embodiments, as Figure 2 and Figure 5 As shown, the suspension mechanism includes an annular body 51 and multiple mounting arms 52. The annular body 51 is positioned obliquely above the hull via the arms. Multiple mounting arms 52 are equidistantly arranged on the annular body 51. Each mounting arm 52 is equipped with a winch 53, each equipped with a sling 55, and each winch 53 is equipped with a servo motor 54. Each sling 55 is connected to a connecting structure 6. The multiple slings 55 are connected to the connecting structure 6 to distribute multiple force control points on the connecting structure 6. When the hull 1 tilts due to water impact, the corresponding winch 53 on each sling 55 is independently driven by a servo, enabling differentiated retraction and extension of the slings 55, thereby quickly leveling the hull 1.

[0040] In some embodiments, as Figure 1As shown, the connecting structure 6 is provided with a plurality of fixed arms 62 on the surface away from the carrier 1. The plurality of fixed arms 62 are perpendicular to the surface of the carrier 1. The plurality of fixed arms 62 are rigid rods, and reinforcing ribs are provided between adjacent fixed arms 62. The plurality of fixed arms 62 and the plurality of reinforcing ribs form a rigid frame. When the different winches retract and release the slings 55, the change in force can be quickly transmitted to the entire rigid frame, avoiding leveling lag and improving the leveling response speed.

[0041] In some embodiments, as Figure 2 、 Figure 8 and Figure 10 As shown, each group of guide bodies 4 is divided into multiple sub-structures along its height direction, each sub-structure is slidably connected to the circumference of the carrier 1, and each sub-structure maintains independent rotation, as shown in FIG. Figure 8 As shown, each guide body 4 comprises multiple sub-structures, in order: a first guide body 41, a second guide body 42, and a third guide body 43. The first guide body 41, the second guide body 42, and the third guide body 43 are respectively provided with a first guide vane 411, a second guide vane 421, and a third guide vane 431. Annular slide rails 13 are provided on the side of the carrier body 1 at heights corresponding to the first guide bodies 41, the second guide bodies 42, and the third guide bodies 43. The first guide bodies 41, the second guide bodies 42, and the third guide bodies 43 are all slidably mounted on the corresponding annular slide rails 13. The multiple independently sliding sub-structures enable local adaptation to changes in water flow, further reducing overall fluid resistance.

[0042] In some embodiments, as Figure 4 As shown, the system also includes a control device 63, which comprises a tilt sensor and a control center. The tilt sensor, mounted on a side surface of the connecting structure 6 near the water surface, is used to monitor the tilt angle of the connecting structure 6. Such sensors, such as MEMS tilt sensors, are compact, low-power, fast-response, and offer excellent shock and vibration resistance, with an accuracy of ±0.1°. The control center, mounted on the annular body, is an industrial PLC with multi-axis motion control capabilities, such as a Siemens SIMATIC S7-1500 T-CPU series, that receives monitoring signals from the tilt sensor. The control center communicates with each servo motor 54 and adjusts the speed and torque of the servo motor 54 in real time based on the received tilt data. Feedback from the tilt sensors drives the servo motors to coordinate adjustments, achieving dynamic balance of the connecting structure 6. This balance is then maintained by the multiple, evenly spaced hydraulic damping rods 7 at the bottom of the connecting structure 6.

[0043] The above disclosures are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A dredging device, characterized in that: include: A shell, a suspension mechanism, and a pump body. The suspension mechanism is arranged above the water surface through the hull, and the pump body is arranged in the shell. The suspension mechanism is connected to the shell through its sling to control the rise and fall of the pump body. The shell includes: The carrier body is a cylindrical structure, and the pump body is fixedly arranged inside the carrier body; A first hemispherical body, whose circular surface is connected to one end of the carrier, and whose arcuate surface is connected to the sling via a connecting structure; A second hemispherical body, the circular surface of which is connected to the other end of the carrier, and a suction channel is opened along the central axis of the second hemispherical body, the suction channel being connected to the suction port of the pump body; The two groups of guide bodies are both frustums with curved side surfaces. The two groups of guide bodies are symmetrically sleeved on the positions near the two ends of the carrier, and the two groups of guide bodies are rotatably connected to the carrier. A plurality of guide blades are provided on the curved surface of each group of guide bodies, so that the curved surfaces of the two groups of guide bodies, the extended surfaces of the curved surfaces of the two groups of guide bodies, the curved surface of the first hemispherical body and the curved surface of the second hemispherical body form an ellipsoidal structure.

2. A dredging device according to claim 1, characterized in that: A spacing space is provided between the two groups of the guide bodies, and the spacing space is located in the middle position of the carrier. A guide pipe is provided in the middle position of the carrier, and the guide pipe is used to guide the sewage pipe of the pump body to the outside of the carrier. The guide pipe is a curved pipe structure, which guides the sewage pipe to extend toward the water surface.

3. A dredging device according to claim 2, characterized in that: A fin stabilizer assembly is provided in the middle of the carrier, two fin stabilizers of the fin stabilizer assembly are symmetrically arranged, and the cross section of the fin stabilizer is in a teardrop shape.

4. A dredging device according to claim 1, characterized in that: A ball groove is provided in the middle of the arcuate surface of the first hemispherical body, and the connecting structure is a plate structure, comprising: a ball head, matched with the ball groove, so as to rotatably connect the connecting structure and the first hemispherical body; A plurality of hydraulic damping rods are arranged in an annular array on the connection structure, with fixed ends connected to the connection structure and telescopic ends connected to the arc surface of the first hemispherical body through a connecting piece.

5. A dredging device according to claim 4, characterized in that: The connecting piece includes: A first ring body is fixedly mounted on the arcuate surface of the first hemispherical body through a first connecting arm, and the center of the first ring body coincides with the center of the first hemispherical body; a second ring body, concentrically sleeved in the first ring body via a second connecting arm, and spaced apart from the first ring body; A plurality of connecting rods are arranged one by one at the end of the telescopic end of each hydraulic damping rod, each connecting rod is provided with a slot, and the second ring body passes through the slot on each connecting rod.

6. A dredging device according to claim 5, characterized in that: The diameter of the slot is larger than the cross-sectional diameter of the second ring body.

7. A dredging device according to claim 4, characterized in that: The suspension mechanism includes: The annular main body is arranged obliquely above the hull through a crane arm; A plurality of mounting arms are equidistantly arranged on the annular body, each mounting arm is provided with a winch, each winch is provided with a sling, each winch is provided with a servo motor, and each sling is connected to the connecting structure.

8. A dredging device according to claim 7, characterized in that: A plurality of fixing arms are provided on a plate surface of the connection structure away from the carrier, and the plurality of fixing arms are perpendicular to the plate surface of the carrier.

9. A dredging device according to claim 1, characterized in that: Each group of the guide bodies is divided into a plurality of sub-body structures along the height direction thereof, and each of the sub-body structures is slidably connected to the circumference of the carrier.

10. The dredging device according to claim 7, characterized in that: Also included is a control device, the control device comprising: The tilt sensor is installed on the side of the connecting structure close to the water surface and is used to monitor the tilt angle of the connecting structure; The control center is arranged on the annular body and is used to receive the monitoring signal of the inclination sensor; the control center is connected to each of the servo motors for communication, and adjusts the speed and torque of the servo motor in real time according to the received inclination data.

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