Environment-friendly reamer antifouling cover device of cutter suction dredger

Abstract

The utility model discloses an environment-friendly anti-fouling cover device for a reamer of a cutter suction dredger. The environment-friendly anti-fouling cover device comprises an anti-fouling diffusion cover body, a hydraulic system A and a hydraulic system B, the antifouling diffusion cover is of a hollow structure, the radius of an inner cavity is larger than that of the dredging reamer, a reamer hole is formed in the top of the antifouling diffusion cover, and the bridging steel wire, the cutter suction dredger bridge and the dredging reamer can penetrate through the reamer hole at the same time. The hydraulic system A comprises a hydraulic rod A, one end of the hydraulic rod A is hinged to the center line of the top of the cutter suction dredger bridge, and the other end is hinged to the center line of the front top of the antifouling diffusion cover; the hydraulic system B comprises a hydraulic rod B. One end of the hydraulic rod B is hinged to the center line of the bottom of the cutter suction dredger bridge, and the other end is hinged to the center line of the top of the rear side of the antifouling diffusion cover. The relative positions and angles of the anti-fouling diffusion cover body, a cutter suction dredger bridge and a dredging reamer can be adjusted, the bottom opening of the anti-fouling diffusion cover body is kept parallel to the underwater sludge surface, and the anti-fouling diffusion effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dredging equipment, and in particular relates to an environmentally friendly cutter anti-fouling cover device for a cutter suction dredger. Background Art

[0002] In ecological dredging projects for rivers, lakes, and reservoirs, environmentally friendly cutter suction dredgers are often used to dredge contaminated sediment from the bottom of the water body. These dredgers are typically equipped with a cutter at the front or bottom of the hull. During dredging operations, the cutter rotates, and the teeth mounted on the outside of the cutter cut the mud, breaking it down into smaller particles. The resulting mixture of mud and crushed soil is then pumped into the dredger's slurry pump, where it is then hydraulically conveyed to a slurry storage tank.

[0003] When a cutter suction vessel arrives at the desilting area and begins construction, the cutter blade begins to rotate. During this process, the cutter blade breaks up and stirs the polluted sediment on the bottom of the water, causing the mud generated during construction to spread into the surrounding water, causing secondary pollution to the surrounding aquatic ecosystem. To address this problem, existing technology uses a fixed metal cover welded to the outside of the cutter blade. The cover is sealed externally, leaving only the bottom opening, and the mud is only sucked in from the bottom opening. This can, to a certain extent, prevent the mud generated by the cutter blade from spreading upward into the water.

[0004] However, the above-mentioned prior art has at least the following technical problems:

[0005] 1. During the dredging process at different water depths, the angle at which the auger is lowered from the bridge is different, and the angle between the auger and the bottom mud surface in the dredging area will be different. The opening of the existing anti-fouling cover is difficult to adjust in real time to keep it parallel to the bottom mud surface in the dredging area under different water depths. The angle between the opening of the anti-fouling cover and the bottom mud surface at the location of the auger will affect the anti-fouling diffusion effect and increase the risk of damage to the bottom of the anti-fouling cover.

[0006] 2. The existing anti-pollution cover has a certain impact on the immersion depth of the auger and cannot adapt to different immersion depths of the auger, which will reduce the auger's earth-breaking efficiency and reduce construction capacity.

[0007] 3. When the existing anti-fouling cover encounters raised rocks on the bottom of the water during the horizontal movement of the underwater auger, it is easy to deform and damage. The anti-fouling cover with a damaged surface not only fails to play an anti-fouling role, but may also collide with the rotating auger, affecting its service life and creating safety risks.

[0008] 4. The existing anti-pollution cover only takes in water from the opening at the bottom of the cover. When the dredged soil changes suddenly, the concentration of the instantaneously sucked mud will increase or decrease, affecting the transportation efficiency.

[0009] Therefore, based on these problems, it is of great practical value to provide an environmentally friendly cutter anti-pollution cover device for a cutter suction dredger that can adjust the opening angle, adapt to different dredging water depths and different cutter penetration depths, and has an anti-collision function. Content of the Utility Model

[0010] Aiming at the problems existing in the prior art, the utility model provides an environmentally friendly cutter anti-pollution cover device for a cutter suction dredger. By arranging two groups of hydraulic rods respectively connected to the cutter suction dredger bridge and the anti-pollution diffusion cover body on the cutter suction dredger, the relative positions and angles of the anti-pollution diffusion cover body with the cutter suction dredger bridge and the dredging cutter can be adjusted, so as to keep the bottom opening of the anti-pollution diffusion cover body parallel to the bottom silt surface, improve the anti-pollution diffusion effect, and at the same time reduce the local stress condition of the anti-pollution diffusion cover body and avoid the risk of damage.

[0011] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0012] An environmentally friendly cutter anti-pollution cover device for a cutter suction dredger includes an anti-pollution diffusion cover body, a hydraulic system A and a hydraulic system B; the anti-pollution diffusion cover body is a hollow structure, and the radius of the internal cavity is larger than the radius of the dredging cutter. A cutter hole is arranged at the top of the anti-pollution diffusion cover body, and the lifting wire, the cutter suction dredger bridge and the dredging cutter can pass through the cutter hole at the same time;

[0013] The hydraulic system A includes a hydraulic rod A. One end of the hydraulic rod A is hinged to the middle line position at the top of the cutter suction dredger bridge, and the other end is hinged to the middle line position at the front top of the anti-pollution diffusion cover body; the hydraulic system B includes a hydraulic rod B. One end of the hydraulic rod B is hinged to the middle line position at the bottom of the cutter suction dredger bridge, and the other end is hinged to the middle line position at the rear top of the anti-pollution diffusion cover body. By adjusting the hydraulic rod A and the hydraulic rod B, the opening angle of the bottom of the anti-pollution diffusion cover body, the relative positions of the anti-pollution diffusion cover body with the cutter suction dredger bridge and the dredging cutter, and the angle of the anti-pollution diffusion cover body can be adjusted.

[0014] Furthermore, 2 anti-collision plates are symmetrically arranged on the left and right sides of the anti-pollution diffusion cover body by welding respectively. The anti-collision plates are made of metal and are arranged obliquely upward from the bottom of the anti-pollution diffusion cover body.

[0015] Furthermore, the anti-pollution diffusion cover body is welded by two metal cover bodies in the front and rear, and the shape is a semi-circular cover body. The front and rear of the anti-pollution diffusion cover body are respectively connected with a front cover and a rear cover by welding, so that the internal space of the anti-pollution diffusion cover body is enclosed front and back.

[0016] Furthermore, the cutter hole is an oval through hole.

[0017] Furthermore, a connecting block A is provided at the center line position of the top front side of the anti-fouling diffusion cover, and a lifting lug 1A is installed on the connecting block A. The lifting lug 1A is connected to the piston rod end of the hydraulic rod A through a bearing, so that the piston rod end of the hydraulic rod A can rotate freely around the lifting lug 1A; a hydraulic pipe A connected to the hydraulic control system of the cutter suction ship is provided on the cylinder barrel of the hydraulic rod A.

[0018] Furthermore, a lifting lug 2A is provided at the center line position of the top of the bridge of the dredger suction dredge by welding, and the lifting lug 2A is connected to the cylinder end of the hydraulic rod A through a bearing, so that the cylinder end of the hydraulic rod A can rotate freely around the lifting lug 2A.

[0019] Furthermore, a lifting lug 1B is provided at the center line position of the top rear side of the anti-fouling diffusion cover, and the lifting lug 1B is connected to the piston rod end of the hydraulic rod B through a bearing, so that the piston rod end of the hydraulic rod B can rotate freely around the lifting lug 1B; a hydraulic pipe B connected to the hydraulic control system of the cutter suction ship is provided on the cylinder barrel of the hydraulic rod B.

[0020] Furthermore, a lifting lug 2B is provided at the center line of the bottom of the bridge of the cutter suction vessel by welding, and the lifting lug 2B is connected to the cylinder end of the hydraulic rod B through a bearing, so that the cylinder end of the hydraulic rod B can rotate freely around the lifting lug 2B.

[0021] The beneficial effects of the present invention are:

[0022] 1. In the process of applying the utility model, during the dredging process of the dredging cutter at different water depths, the two sets of hydraulic rods can be controlled by the hydraulic control system of the cutter suction vessel to adjust the angle of the anti-fouling diffusion cover so that the bottom opening of the anti-fouling diffusion cover is parallel to the dredged bottom mud surface, thereby improving the anti-fouling diffusion effect; at the same time, the local stress of the anti-fouling diffusion cover is reduced to avoid the risk of damage.

[0023] 2. The utility model can control two sets of hydraulic rods through the hydraulic control system of the cutter suction vessel to adjust the relative position of the anti-fouling diffusion cover and the dredging cutter, adapt to the different dredging cutter's immersion depth and the ground-breaking efficiency.

[0024] 3. An anti-collision plate is provided on the outside of the anti-fouling diffusion cover. During the application of the utility model, when the lateral movement and swing encounter underwater protruding rocks, the anti-fouling diffusion cover can be protected to a certain extent, thereby extending the service life of the anti-fouling diffusion cover and reducing safety risks.

[0025] 4. The application of the utility model can avoid sudden changes in the concentration of instantaneously sucked mud when the dredged soil undergoes a sudden change, stabilize the mud conveying flow rate, and improve the conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The technical solutions of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. However, it should be understood that these drawings are only designed for explanatory purposes and thus do not limit the scope of the present application. In addition, unless otherwise specified, these drawings are only intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0027] Figure 1 It is a three-dimensional schematic diagram of the present utility model;

[0028] Figure 2 It is a three-dimensional bottom view after the installation of the present utility model;

[0029] Figure 3 It is a three-dimensional top view after the installation of the present utility model;

[0030] Figure 4 It is a three-dimensional rear view after the installation of the present utility model;

[0031] Figure 5 It is a three-dimensional schematic diagram after the installation of the present utility model;

[0032] Figure 6 It is a schematic diagram of the application of the present utility model in the case of relatively shallow water depth;

[0033] Figure 7 It is a schematic diagram of the application of the present utility model in the case of relatively deep water depth.

[0034] In the figure: 10, connecting block A; 11, hydraulic rod A; 12, lifting lug 1A; 13, lifting lug 2A; 14, hydraulic pipe A; 21, hydraulic rod B; 22, lifting lug 1B; 23, lifting lug 2B; 24, hydraulic pipe B; 30, anti-pollution diffusion cover body; 31, front cover; 32, rear cover; 33, cutter hole; 34, anti-collision plate; 41, bridge of the cutter suction dredger; 42, bridge lifting wire. Specific embodiments

[0035] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" 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; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] Embodiment

[0039] Please refer to Figures 1 to 7 , this embodiment provides an environment-friendly cutter anti-pollution cover device for a cutter suction dredger, which includes an anti-pollution diffusion cover body 30, a hydraulic system A, and a hydraulic system B.

[0040] The anti-pollution diffusion cover body 30 is a hollow structure, and the radius of the internal cavity is larger than the radius of the dredging cutter. Such a setting enables the dredging cutter to be placed inside the anti-pollution diffusion cover body 30 for rotation. When the dredging cutter performs dredging operations, the anti-pollution diffusion cover body 30 outside the dredging cutter can prevent the generated mud from spreading outwards.

[0041] A cutter hole 33 is provided at the top of the anti-pollution diffusion cover body 30. The purpose of such a setting is that when the dredging cutter performs dredging operations, the mud agitated by the dredging cutter will be sucked into the mud suction port at the rear of the dredging cutter under the action of negative pressure, causing negative pressure inside the anti-pollution diffusion cover body 30. At this time, the clear water in the water body can enter the inside of the anti-pollution diffusion cover body 30 from top to bottom through the cutter hole 33, mix with the broken soil blocks and mud generated by the rotation and cutting of the dredging cutter, and be sucked into the mud suction port at the rear of the dredging cutter under the action of pump pressure, ensuring that the water inflow of the mud suction port at the rear of the dredging cutter remains unchanged. When the dredging soil suddenly changes, the change in mud concentration is weakened, and the stability of the mud conveying flow rate is improved. The lifting wire 42, the dredger bridge 41, and the dredging cutter can pass through the cutter hole 33 at the same time. The purpose of such a setting is that when the dredger bridge 41 is lifted and lowered, it will not cause collision and influence on the anti-pollution diffusion cover body 30.

[0042] The hydraulic system A includes a hydraulic rod A11. One end of the hydraulic rod A11 is hinged to the midline position at the top of the dredger bridge 41, and the other end is hinged to the midline position at the front top of the anti-pollution diffusion cover body 30; the hydraulic system B includes a hydraulic rod B21. One end of the hydraulic rod B21 is hinged to the midline position at the bottom of the dredger bridge 41, and the other end is hinged to the midline position at the rear top of the anti-pollution diffusion cover body 30; by adjusting the hydraulic rod A11 and the hydraulic rod B21, the opening angle at the bottom of the anti-pollution diffusion cover body 30, the relative positions of the anti-pollution diffusion cover body 30, the dredger bridge 41, and the dredging cutter, and the angle of the anti-pollution diffusion cover body 30 can be adjusted.

[0043] As a preferred embodiment, two anti-collision plates 34 are symmetrically arranged on the left and right sides of the anti-pollution diffusion cover 30 by welding. The anti-collision plates 34 are made of metal and are arranged obliquely upward from the bottom of the anti-pollution diffusion cover 30. The purpose of this setting is that when the dredging cutterhead traverses and swings and encounters underwater protruding boulders, it can protect the anti-pollution diffusion cover 30 from being impacted and damaged, play a certain protective role, extend the service life of the anti-pollution diffusion cover 30, and reduce safety risks.

[0044] As a preferred embodiment, the anti-pollution diffusion cover 30 is composed of two metal covers welded together at the front and back, and is in the shape of a semi-circular cover. The front and back of the anti-pollution diffusion cover 30 are respectively connected with a front cover 31 and a rear cover 32 by welding, so that the internal space of the anti-pollution diffusion cover 30 is closed at the front and back. This setting can improve the anti-pollution diffusion effect when the dredging cutterhead performs dredging operations, prevent the generated mud from spreading laterally, and weaken the effect of the soil fragments and mud generated by the rotation and cutting of the dredging cutterhead from spreading outward.

[0045] As a preferred embodiment, the cutterhead hole 33 is an oval through-hole, which is convenient for the bridge wire 42, the bridge 41 of the cutter suction dredger and the dredging cutterhead to pass through the cutterhead hole 33 and adjust the angle of the anti-pollution diffusion cover 30.

[0046] As a preferred embodiment, a connecting block A10 is arranged at the midline position of the top of the front side of the anti-pollution diffusion cover 30. The purpose of this setting is to install a lifting lug 1A. A lifting lug 1A12 is installed on the connecting block A10. The lifting lug 1A12 is connected to the piston rod end of the hydraulic rod A11 through a bearing, so that the piston rod end of the hydraulic rod A11 can rotate freely around the lifting lug 1A12; a hydraulic pipe A14 connecting the hydraulic control system of the cutter suction dredger is arranged on the cylinder barrel of the hydraulic rod A11. The purpose of this setting is that the telescopic movement of the hydraulic rod A11 can be controlled through the hydraulic control system of the cutter suction dredger to adjust the azimuth angle of the bottom opening of the anti-pollution diffusion cover 30.

[0047] As a preferred embodiment, a lifting lug 2A13 is arranged at the midline position of the top of the bridge 41 of the cutter suction dredger by welding. The lifting lug 2A13 is connected to the cylinder barrel end of the hydraulic rod A11 through a bearing, so that the cylinder barrel end of the hydraulic rod A11 can rotate freely around the lifting lug 2A13.

[0048] As a preferred embodiment, a lifting lug 1B22 is provided at the midline position of the top of the rear side of the anti-pollution diffusion cover body 30. The lifting lug 1B22 is connected to the piston rod end of the hydraulic rod B21 through a bearing, so that the piston rod end of the hydraulic rod B21 can rotate freely around the lifting lug 1B22. A hydraulic pipe B24 connecting to the hydraulic control system of the cutter suction dredger is provided on the cylinder barrel of the hydraulic rod B21. The purpose of such a setting is to control the telescopic movement of the hydraulic rod B21 through the hydraulic control system of the cutter suction dredger, so as to adjust the azimuth angle of the bottom opening of the anti-pollution diffusion cover body 30.

[0049] As a preferred embodiment, a lifting lug 2B23 is provided at the midline position of the bottom of the bridge 41 of the cutter suction dredger by welding. The lifting lug 2B23 is connected to the cylinder barrel end of the hydraulic rod B21 through a bearing, so that the cylinder barrel end of the hydraulic rod B21 can rotate freely around the lifting lug 2B23.

[0050] The two sets of hydraulic rods can jointly control the azimuth and pitch angles of the anti-pollution diffusion cover body 30, that is, the relative positions and angles with the dredging cutter and the bridge 41 of the cutter suction dredger, and keep the plane of the bottom opening of the anti-pollution diffusion cover body 30 parallel to the bottom silt surface of the dredging area, so as to improve the anti-pollution diffusion effect. Specifically, the bottom opening angle of the anti-pollution diffusion cover body 30 can be adjusted by the two sets of hydraulic rods to keep it parallel to the bottom silt surface at the position of the dredging cutter under different water depths, so as to improve the anti-pollution effect. The relative position between the anti-pollution diffusion cover body 30 and the dredging cutter can be adjusted by the two sets of hydraulic rods to adapt to the penetration depth of the dredging cutter under different construction conditions. The angle of the anti-pollution diffusion cover body 30 can be adjusted by the two sets of hydraulic rods to be parallel to the bottom slope during underwater slope dredging.

[0051] The specific working process of the present utility model is as follows:

[0052] Dredging deep water trenches:

[0053] When the dredging water depth becomes deeper and the dredging cutter needs to carry out deeper foundation trench excavation, the dredging cutter needs to be lowered to a deeper position in the water body, so that the dredging cutter is at a lower underwater elevation position for dredging operations.

[0054] In the above steps, the bridge support is used to lower the bridge 41 of the cutter suction dredger, and the bridge lifting wire 42 is released. The bridge 41 of the cutter suction dredger descends under the action of gravity. At this time, the angle formed by the midline of the bridge 41 of the cutter suction dredger and the bottom silt surface gradually becomes larger.

[0055] The hydraulic control system of the cutter suction dredger is used to control the hydraulic rod A11 to appropriately shorten the piston rod of the hydraulic rod A11; the hydraulic control system of the cutter suction dredger is used to control the hydraulic rod B21 to appropriately extend the piston rod of the hydraulic rod B21. Make the plane where the bottom edges of the anti-pollution diffusion cover body 30, the front cover 31, the rear cover 32, and the anti-collision plate 34 are located parallel to the bottom silt surface at the position of the dredging cutter, and the bottom edge of the anti-collision plate 34 is also parallel to the bottom silt surface of the dredging area (asFigure 7 as shown

[0056] For areas that have not been dredged by yawing, in the case where the dredging cutter head traverses and swings and encounters underwater protruding boulders, the anti-collision plate 34 will weaken the collision effect of the underwater protruding boulders on the anti-pollution diffusion cover 30, play an anti-collision function, play a certain protective role for the anti-pollution diffusion cover 30, extend the service life of the anti-pollution diffusion cover 30, and reduce safety risks.

[0057] Dredging underwater slopes:

[0058] When dredging underwater slopes, use the hydraulic control system of the cutter suction dredger to adjust the appropriate telescoping of the hydraulic rod A11 and the hydraulic rod B21, so that the bottom opening angle of the anti-pollution diffusion cover 30 is the same as the underwater dredging slope angle, and the bottom opening of the anti-pollution diffusion cover 30, the front cover 31, the rear cover 32, and the plane where the bottom edges of the anti-collision plate 34 are located are parallel to the underwater silt surface where the dredging cutter head is located, which can reduce the collision risk of the anti-pollution diffusion cover 30 while improving the anti-pollution diffusion effect.

[0059] Adapting to the penetration depth of the dredging cutter head:

[0060] During the dredging operation at different dredging depths, the penetration depth of the cutter head varies according to the soil conditions. To adapt to the different penetration depths of the dredging cutter head, use the hydraulic control system of the cutter suction dredger, and at the same time adjust and control the telescoping of the hydraulic rod A11 and the hydraulic rod B21. On the premise of keeping the bottom opening of the anti-pollution diffusion cover 30, the front cover 31, the rear cover 32, and the plane where the bottom edges of the anti-collision plate 34 are located parallel to the underwater silt surface where the dredging cutter head is located, adjust the relative position between the dredging cutter head and the anti-pollution diffusion cover 30, that is, the volume of the part of the bottom of the dredging cutter head exposed outside the bottom of the anti-pollution diffusion cover 30. The purpose of this setting is to adapt to the penetration depth of the dredging cutter head under different construction conditions and improve the anti-pollution diffusion effect.

[0061] In summary, the environmentally friendly cutter anti-pollution cover device of the cutter suction dredger provided by the present utility model can adjust the opening angle of the anti-pollution diffusion cover 30 to adapt to different dredging water depths and different penetration depths of the dredging cutter head.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An environmentally friendly cutter anti-pollution cover device for a cutter suction dredger, characterized in that, It includes an anti-pollution diffusion cover body, a hydraulic system A, and a hydraulic system B; the anti-pollution diffusion cover body is a hollow structure, and the radius of the internal cavity is greater than the radius of the dredging cutter. A cutter hole is provided at the top of the anti-pollution diffusion cover body, and the hoisting wire, the bridge of the cutter suction dredger, and the dredging cutter can pass through the cutter hole simultaneously. The hydraulic system A includes a hydraulic rod A. One end of the hydraulic rod A is hinged to the midline position at the top of the bridge of the cutter suction dredger, and the other end is hinged to the midline position at the top of the front side of the anti-pollution diffusion cover body; the hydraulic system B includes a hydraulic rod B. One end of the hydraulic rod B is hinged to the midline position at the bottom of the bridge of the cutter suction dredger, and the other end is hinged to the midline position at the top of the rear side of the anti-pollution diffusion cover body. By adjusting the hydraulic rod A and the hydraulic rod B, the opening angle at the bottom of the anti-pollution diffusion cover body, the relative positions of the anti-pollution diffusion cover body, the bridge of the cutter suction dredger, and the dredging cutter, and the angle of the anti-pollution diffusion cover body can be adjusted.

2. The environmental protection cutter anti-fouling cover device of the trailing suction hopper dredger according to claim 1, characterized in that, Two anti-collision plates are symmetrically arranged on the left and right sides of the anti-pollution diffusion cover body by welding. The anti-collision plates are made of metal and are arranged obliquely upward from the bottom of the anti-pollution diffusion cover body.

3. The environmental protection cutter anti-fouling cover device of the trailing suction hopper dredger according to claim 1, characterized in that, The anti-pollution diffusion cover body is composed of two metal cover bodies welded together at the front and rear, and its shape is a semi-circular cover body. A front cover and a rear cover are respectively connected to the front and rear of the anti-pollution diffusion cover body by welding, so that the internal space of the anti-pollution diffusion cover body is enclosed at the front and rear.

4. The environmentally friendly cutter anti-fouling cover device for a cutter suction dredger according to claim 1, characterized in that, The cutter hole is an oval through-hole.

5. The environmental protection cutter anti-pollution cover device of the trailing suction hopper dredger according to claim 1, characterized in that, A connecting block A is arranged at the midline position at the top of the front side of the anti-pollution diffusion cover body. A lifting ear 1A is installed on the connecting block A, and the piston rod end of the hydraulic rod A is connected to the lifting ear 1A through a bearing, so that the piston rod end of the hydraulic rod A can rotate freely around the lifting ear 1A; a hydraulic pipe A connecting the hydraulic control system of the cutter suction dredger is arranged on the cylinder barrel of the hydraulic rod A.

6. The environmentally friendly cutter anti-pollution cover device for a trailing suction hopper dredger according to claim 1, characterized in that, A lifting ear 2A is arranged at the midline position at the top of the bridge of the cutter suction dredger by welding. The cylinder barrel end of the hydraulic rod A is connected to the lifting ear 2A through a bearing, so that the cylinder barrel end of the hydraulic rod A can rotate freely around the lifting ear 2A.

7. The environmentally friendly cutter anti-pollution cover device of the trailing suction hopper dredger according to claim 1, characterized in that, A lifting ear 1B is arranged at the midline position at the top of the rear side of the anti-pollution diffusion cover body. The piston rod end of the hydraulic rod B is connected to the lifting ear 1B through a bearing, so that the piston rod end of the hydraulic rod B can rotate freely around the lifting ear 1B; a hydraulic pipe B connecting the hydraulic control system of the cutter suction dredger is arranged on the cylinder barrel of the hydraulic rod B.

8. The anti-pollution cover device for the environmentally friendly cutter of the trailing suction hopper dredger according to claim 1, characterized in that, A lifting ear 2B is arranged at the midline position at the bottom of the bridge of the cutter suction dredger by welding. The cylinder barrel end of the hydraulic rod B is connected to the lifting ear 2B through a bearing, so that the cylinder barrel end of the hydraulic rod B can rotate freely around the lifting ear 2B.

Images