Bucket wheel dredger

Abstract

This utility model relates to the field of dredging technology, specifically to a bucket wheel dredging vessel, comprising a hull, with a bridge rotatably connected to one end of the hull, and a bucket wheel cutter head installed at one end of the bridge. The bucket wheel cutter head includes a mounting base, inside which a rotating bucket wheel is rotatably connected. Several scrapers are fixedly connected inside the rotating bucket wheel. By driving the rotating bucket wheel and scrapers to rotate within the mounting base, the dredging vessel cuts and agitates the silt and sediment at the bottom of the water, generating a powerful cutting action that breaks up the solidified bottom mud into a loose state. The scrapers rotate with the rotating bucket wheel, achieving efficient cutting and agitation of the silt and sediment at the bottom of the water. The scraper design optimizes the soil transport path, reduces the risk of blockage, improves cutting efficiency, and expands the applicability of the dredging vessel.

Description

Technical Field

[0001] This utility model relates to the field of dredging technology, and more specifically, to a bucket wheel dredging vessel. Background Technology

[0002] With the development of the shipping industry, the requirements for the depth and width of waterways are constantly increasing. Traditional dredgers, such as grab bucket dredgers, chain bucket dredgers, and cutter suction dredgers, are gradually revealing their limitations under certain working conditions. For example, cutter suction dredgers experience reduced cutting efficiency when cutting mud in reverse, are prone to clogging the suction inlet grid and impeller channel, and may also cause excessive over-excavation. Bucket wheel dredgers have certain advantages in terms of the dredging process and the shape of the dredged soil. The shape of the bucket wheel prevents the bucket wheel boom from contacting the ground surface and causing a "dragging" phenomenon, thus finding some application in waterway dredging.

[0003] There are many existing technologies for bucket wheel dredgers, such as:

[0004] Chinese Patent (Application No.: CN202010552933.7) discloses a bucket wheel dredger with a positioning pile lifting device, including a hull, a buoyancy chamber, a first positioning pile, and a lifting structure. The lifting structure includes a positioning frame and a lifting frame. Guide rods are fixedly connected to a set of opposite side walls of the positioning frame. The lifting frame includes a lifting plate and a lifting hook. The lifting plate is slidably fitted onto the guide rods. An installation opening is opened at the bottom of the lifting plate. A hook groove is opened on the first positioning pile. The lifting plate has a tightening opening, and a guide hole is opened on one side of the tightening opening. A traction rod slides within the guide hole. One end of the traction rod is fixedly connected to an abutment plate. A push-out compression spring is sandwiched between the abutment plate and the side wall of the lifting plate. A tightening steel rope is connected to the lifting hook and connected to the traction rod. A lifting cylinder is connected to the side wall of the positioning frame, and the telescopic rod of the lifting cylinder is fixedly connected to the lifting plate. This invention uses a mechanical method for pile driving and extraction, which has the advantages of saving manpower and improving pile driving efficiency.

[0005] Considering that traditional cutter suction dredgers have significantly reduced cutter cutting efficiency when cutting mud in the reverse direction, and are prone to clogging of the suction inlet grid and impeller channel, they have limited adaptability to different soil types (such as hard soil and rock). Meanwhile, early bucket wheel dredgers had difficulty completely emptying the mud bucket when excavating cohesive soil, which affected work efficiency. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing a bucket wheel dredger, which solves the problems of significantly reduced cutting efficiency of the cutter head in traditional dredgers, limited adaptability to different soil types, and impact on work efficiency.

[0007] To achieve the above objectives, this utility model provides a bucket wheel dredger, including a hull, a bridge rotatably connected to one end of the hull, and a bucket wheel cutter head provided at one end of the bridge. The bucket wheel cutter head includes a mounting base, a rotating bucket wheel rotatably connected inside the mounting base, and several scrapers fixedly connected inside the rotating bucket wheel. By driving the rotating bucket wheel and scrapers to rotate inside the mounting base, the silt and sand at the bottom of the water are cut and stirred.

[0008] The beneficial effects of this utility model are:

[0009] 1. When cutting and agitating bottom silt and mud, the rotation of the bucket wheel in the bucket wheel cutter head generates a strong cutting action, breaking the solidified bottom mud into a loose state, which facilitates the subsequent transportation of mud.

[0010] 2. For different soil types and operating environments, the scraper follows the rotation of the bucket wheel. The rotating bucket wheel and scraper can cut and agitate the hard mud and clay layers, thereby achieving efficient work and improving the applicability of the dredger. The design of the scraper optimizes the soil transport path, reduces the risk of blockage, improves cutting efficiency, and enhances the applicability of the dredger.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Preferably, one side of the rotating bucket wheel is fixedly connected to the output end of the hydraulic motor.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the rotation speed of the bucket wheel can be adjusted in a timely manner by means of a hydraulic motor, which enables the dredger to adapt to different soil types and improves construction accuracy.

[0014] Preferably, a winch is fixedly connected to one end of the top of the hull.

[0015] The beneficial effect of adopting the above-mentioned further solution is that, in conjunction with the traction of the winch, the digging angle and depth of the bucket wheel cutter head can be flexibly adjusted to adapt to different terrains and construction needs.

[0016] Preferably, a connecting pipe is fixedly connected to one side of the mounting base, a sludge suction pump is fixedly connected to one end of the connecting pipe, and a sludge discharge pipe is fixedly connected to the top of the sludge suction pump.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the cut mud is directly sucked into the mud suction pump through the connecting pipe and transported to the designated area through the mud discharge pipe. The entire transportation process adopts an integrated design, which can realize long-distance continuous operation and improve overall efficiency.

[0018] Preferably, a diesel engine and a generator set are fixedly connected inside the hull, a trolley cylinder and a positioning pile cylinder are respectively installed at the other end of the top of the hull, and a deck crane and a control room are fixedly connected to one end of the top of the hull.

[0019] The beneficial effects of adopting the above-mentioned further solutions are that the trolley cylinder and the positioning pile cylinder effectively ensure that the hull does not shift during the dredging process, improve the construction accuracy, and are especially suitable for areas with rapid water flow or complex seabed topography. The diesel engine and generator set provide independent power supply for the dredger, ensuring that the equipment can continue to operate without external power supply, improving the autonomy of operation. The control room centrally controls all equipment, optimizes the operation process, reduces labor costs and improves safety.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] The dredger uses a bucket wheel-type cutter head mounted at the bow to cut and agitate the silt and sediment on the seabed. The rotating bucket wheel, driven by a hydraulic motor, rotates mechanically, generating a powerful cutting action that breaks up the solidified sediment into a loose state. This loose sediment mixes with water to form a slurry, which is then sucked into a connecting pipe by an onboard slurry pump. The slurry is then transported through a closed pipeline system to a designated discharge area (such as a stockpile, discharge area, or reclamation area). The entire transportation process is integrated, enabling long-distance continuous operation. The rotating bucket wheel is equipped with unique scrapers that cut and agitate hard and sticky mud layers, resulting in highly efficient operation and expanding the dredger's applicability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0023] Figure 2 This is a top view of the structure of this utility model;

[0024] Figure 3 This is an enlarged schematic diagram of the bucket wheel type cutter head structure of this utility model.

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. Hull;

[0027] 2. Bridge; 21. Winch;

[0028] 3. Bucket wheel type cutter head; 31. Mounting base; 32. Rotating bucket wheel; 33. Hydraulic motor; 34. Scraper; 35. Connecting pipe;

[0029] 4. Sludge suction pump; 41. Sludge discharge pipe;

[0030] 5. Diesel engine; 51. Generator set;

[0031] 6. Trolley hydraulic cylinder; 61. Positioning pile hydraulic cylinder;

[0032] 7. Deck crane;

[0033] 8. Control Room. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figures 1-3 As shown, this embodiment provides a bucket wheel dredger, including a hull 1, with a bridge 2 rotatably connected to one end of the hull 1. Considering the significantly reduced cutting efficiency of traditional dredger cutters, limited adaptability to different soil types, and impact on work efficiency, a bucket wheel cutter head 3 is provided at one end of the bridge 2. The bucket wheel cutter head 3 includes a mounting base 31, with a rotating bucket wheel 32 rotatably connected inside the mounting base 31. Several scrapers 34 are fixedly connected inside the rotating bucket wheel 32. By driving the rotating bucket wheel 32 and scrapers 34 to rotate inside the mounting base 31, the silt and sand at the bottom of the water are cut and stirred.

[0036] In summary, the improvement of this embodiment lies in:

[0037] The bucket wheel-type cutter head 3 installed at the front of the hull 1 cuts and agitates the silt and sediment at the bottom of the water. The rotating bucket wheel 32 is driven by a drive mechanism to achieve mechanical rotation, generating a strong cutting action to break the solidified bottom mud into a loose state. At the same time, the scraper 34 rotates with the rotating bucket wheel 32 to achieve efficient cutting and agitation of the silt and sediment at the bottom of the water. The design of the scraper 34 optimizes the soil transport path, reduces the risk of blockage, improves cutting efficiency, and increases the applicability of the dredger.

[0038] Based on the above, other structures also need to be disclosed in detail, such as:

[0039] To ensure the stable rotation of the rotating bucket wheel 32 and to adjust its speed in a timely manner to meet different dredging needs, one side of the rotating bucket wheel 32 is fixedly connected to the output end of the hydraulic motor 33. The hydraulic motor 33 is a variable speed hydraulic motor. By adjusting the speed of the rotating bucket wheel 32, the cutting force can be increased or decreased in a timely manner. Increasing the speed increases the cutting force, which is beneficial for the rotating bucket wheel 32 to agitate the silt. Decreasing the speed reduces disturbance, avoids excessive mud diffusion, improves mud suction efficiency, and enables the dredger to adapt to different soil types and improve construction accuracy.

[0040] To increase the dredger's operating range, a winch 21 is fixedly connected to one end of the top of the hull 1. Through the rotational connection between the hull 1 and the bridge 2, and with the traction of the winch 21, the digging angle and depth of the bucket wheel cutter head 3 can be flexibly adjusted to adapt to different terrains and construction needs. Compared with fixed dredgers, this design can cover a larger operating range and reduce the number of times the vessel moves.

[0041] To achieve integrated excavation and transportation operations, a connecting pipe 35 is fixedly connected to one side of the mounting base 31. A mud suction pump 4 is fixedly connected to one end of the connecting pipe 35, and a mud discharge pipe 41 is fixedly connected to the top of the mud suction pump 4. The cut mud is directly sucked into the mud suction pump 4 through the connecting pipe 35 and transported to the designated area through the mud discharge pipe 41. The entire transportation process adopts an integrated design, which can realize long-distance continuous operation and improve overall efficiency.

[0042] In order to effectively ensure the stability of the vessel 1 during operation, a trolley cylinder 6 and a positioning pile cylinder 61 are respectively installed at the other end of the top of the vessel 1. The trolley cylinder 6 is used to adjust the position of the vessel 1, and the positioning pile cylinder 61 provides stable support, effectively ensuring that the vessel 1 does not shift during the excavation process and improving the construction accuracy.

[0043] To achieve an integrated power and control system for the dredger, a diesel engine 5 and a generator set 51 are fixedly connected inside the hull 1. A deck crane 7 and a control room 8 are fixedly connected to one end of the top of the hull 1. The diesel engine 5 and the generator set 51 provide independent power supply for the dredger, ensuring that the equipment can continue to operate without external power, thereby improving operational autonomy. The control room 8 centrally controls all equipment, optimizes the operation process, reduces labor costs, and improves safety.

[0044] In summary, the working principle of this solution is as follows:

[0045] The bucket wheel cutter head 3, as the core component, is controlled by the control room 8, which controls the hydraulic motor 33 to drive the rotating bucket wheel 32 to rotate. During operation, the speed of the hydraulic motor 33 is increased, driving the rotating bucket wheel 32 to generate a strong cutting force to break up the solidified bottom mud. When encountering soft silt, the speed is reduced to minimize disturbance and optimize the mud concentration. The scraper 34 inside the rotating bucket wheel 32 rotates accordingly, achieving efficient cutting and agitation of bottom silt and sediment. The design of the scraper 34 optimizes the soil transport path, reduces the risk of blockage, improves cutting efficiency, and expands the applicability of the dredger.

[0046] During operation, the rotating connection between the hull 1 and the bridge 2, in conjunction with the winch 21, enables the three-dimensional spatial positioning of the bucket wheel cutter head 3. This allows for flexible adjustment of the digging angle and depth of the bucket wheel cutter head 3, adapting to different terrains and construction needs. Compared to fixed dredgers, this design can cover a larger operating range and reduce the number of times the vessel needs to move. The trolley cylinder 6 adjusts the lateral position of the hull 1, and the positioning pile cylinder 61 inserts the pile legs into the riverbed to form stable support. The diesel engine 5 and generator set 51 constitute an independent energy system.

[0047] The cut mud is sucked into the suction pump 4 through the connecting pipe 35 and transported to the designated area through the discharge pipe 41. The entire transportation process adopts an integrated design, enabling long-distance continuous operation. This bucket wheel dredger effectively solves the problems of cutting efficiency, adaptability, and construction accuracy of traditional dredgers through the innovative design of the bucket wheel cutter head, the flexible bridge structure 2, the stable positioning system, and the efficient mud transportation solution.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bucket wheel dredger, comprising a hull (1), characterized in that: One end of the hull (1) is rotatably connected to a bridge (2), and one end of the bridge (2) is provided with a bucket wheel type cutter head (3). The bucket wheel type cutter head (3) includes a mounting base (31), and a rotating bucket wheel (32) is rotatably connected inside the mounting base (31). Several scrapers (34) are fixedly connected inside the rotating bucket wheel (32). By driving the rotating bucket wheel (32) and scrapers (34) to rotate inside the mounting base (31), the silt and mud at the bottom of the water are cut and stirred.

2. The bucket wheel dredger according to claim 1, characterized in that: The rotating bucket wheel (32) is fixedly connected to the output end of the hydraulic motor (33) on one side.

3. The bucket wheel dredger according to claim 1, characterized in that: A winch (21) is fixedly connected to one end of the top of the hull (1).

4. The bucket wheel dredger according to claim 1, characterized in that: A connecting pipe (35) is fixedly connected to one side of the mounting base (31), a mud suction pump (4) is fixedly connected to one end of the connecting pipe (35), and a mud discharge pipe (41) is fixedly connected to the top of the mud suction pump (4).

5. The bucket wheel dredger according to claim 1, characterized in that: The hull (1) is fixedly connected to a diesel engine (5) and a generator set (51).

6. The bucket wheel dredger according to claim 1, characterized in that: The other end of the top of the hull (1) is respectively equipped with a trolley cylinder (6) and a positioning pile cylinder (61).

7. The bucket wheel dredger according to claim 1, characterized in that: The top of the hull (1) is fixedly connected to a deck crane (7) and a control room (8).

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