CN215926119U - Dredging ship equipment for environmental protection engineering - Google Patents

Abstract

The utility model relates to a dredging ship device for environmental protection engineering. Comprises a ship body with a ship engine control room; a window arranged along the length direction is arranged in the middle of the ship body, and a dredging device is arranged at the position of the window; the dredging device comprises a front support and a rear support which are arranged on a ship body, a connecting beam is arranged between the tops of the front support and the rear support, a translation track is arranged between the bottoms of the front support and the rear support, and a bottom plate which moves in a translation manner is arranged on the translation track; a water pump and a mud pump are arranged on the bottom plate, a delivery pipeline is arranged at the outlet of the mud pump, a mud suction pipeline is arranged at the inlet of the mud pump, and a suction nozzle is arranged at the lower end of the mud suction pipeline; the dredging device also comprises a lifting pipe, a lifting driving component for driving the lifting pipe to move up and down is arranged on the bottom plate, a jet dredging component is arranged at the lower end of the lifting pipe, and an outlet of the water pump is connected with the upper end of the lifting pipe through a hose. The utility model has reasonable structural design and multiple operation modes, ensures the dredging effect and improves the operation efficiency.

Description

Dredging ship equipment for environmental protection engineering

Technical Field

The utility model belongs to the technical field of environment-friendly construction facilities, and particularly relates to dredging ship equipment for environment-friendly engineering.

Background

In environment-friendly construction projects of lakes, rivers, fish ponds, reservoirs and the like, environment-friendly dredging construction projects are usually involved. The dredging construction refers to the cleaning of silt deposited at the water bottom, belongs to the environmental protection water conservancy project, and is one of the important work of maintaining lakes, rivers, fish ponds, reservoirs and the like. In the dredging engineering, by combining the manual cleaning mode with the mechanical equipment cleaning mode, sludge under the sediment water can be blown and stirred into a turbid water shape and flows away along with water flow, so that the dredging function is achieved, and the sludge at the river bottom can be absorbed and conveyed to the land for treatment such as sludge drying.

With the advancement of technology, a variety of facilities for underwater dredging have been developed. Through introducing auxiliary assembly in the construction of environmental protection desilting, can greatly promote the efficiency of desilting to reduce intensity of labour.

Existing dredging apparatus typically comprises a floating platform on which a dredging device is mounted. When the underwater dredging device works, the floating platform carries the dredging device to carry out underwater dredging operation in a dredging water area. However, the existing dredging equipment has a single dredging mode, and usually only can carry out excavation dredging or suction dredging of underwater silt. As mentioned above, typical modes of environmental dredging projects include a mode of blowing and stirring sludge to flow away with water flow and a mode of absorbing and transferring sludge to land for treatment, and the existing dredging equipment does not have these two working modes at the same time, and certainly cannot be switched between the two working modes according to the requirements of specific construction operations, which results in limited equipment use. Furthermore, in general, a good dredging effect is achieved by the common action of multiple modes, and the prior single dredging mode is difficult to ensure the good dredging effect and the efficiency of dredging operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides dredging ship equipment for environmental protection engineering, which is reasonable in structural design, has multiple operation modes, ensures the dredging effect and improves the operation efficiency, and aims to solve the technical problems in the prior art.

The technical scheme adopted by the utility model for solving the technical problems in the prior art is as follows: a dredging boat equipment for environmental engineering comprises a boat body with a boat engine control room; a window arranged along the length direction is arranged in the middle of the ship body, and a dredging device is arranged at the position of the window; the dredging device comprises a front support and a rear support which are arranged on a ship body, a connecting beam is arranged between the tops of the front support and the rear support, a translation track is arranged between the bottoms of the front support and the rear support, and a bottom plate which moves in a translation manner is arranged on the translation track; a water pump and a mud pump are arranged on the bottom plate, a delivery pipeline is arranged at the outlet of the mud pump, a mud suction pipeline is arranged at the inlet of the mud pump, and a suction nozzle is arranged at the lower end of the mud suction pipeline; the dredging device further comprises a lifting pipe, a lifting driving component for driving the lifting pipe to move up and down is installed on the bottom plate, a jet dredging component is installed at the lower end of the lifting pipe, an outlet of the water pump is connected with the upper end of the lifting pipe through a hose, and the suction nozzle is installed and fixed at the lower portion of the lifting pipe through a support and is located above the jet dredging component.

The utility model has the advantages and positive effects that:

compared with the existing dredging facility, the ship-borne dredging equipment can stably stop and move in a dredging water area. Through installing braced frame on the hull and making the main part of desilting device make the back-and-forth movement, make this desilting ship equipment when carrying out the desilting operation, the desilting device can shift from beginning to end, has realized the change of desilting position under the parking state, has guaranteed all to have the ability of desilting operation in the certain area, avoids frequently moving the ship.

Through the elevator pipe that is provided with lift drive assembly drive lift and at the lower extreme installation efflux desilting subassembly of elevator pipe, realized through the water pump through the elevator pipe to efflux desilting subassembly carry high pressure water source in order to stir the technological effect of diffusion to submarine silt, under the state that the dredge pump is not opened, this desilting ship is in to blow to silt and stirs under the operational mode that makes it flow away along with the rivers, under the state that the dredge pump was opened, this desilting ship is in and absorbs and shifts the operational mode under silt, consequently, this desilting ship equipment possesses multiple operation mode, be convenient for select the application according to the operating condition, the commonality of equipment has been guaranteed, multiple operation mode has guaranteed this desilting ship equipment and can carry out efficient desilting operation. Because the lift pipe and efflux desilting subassembly can go up and down to remove, consequently be convenient for adjust the height of efflux desilting subassembly according to the mud face position of submarine silt, make efflux desilting subassembly be in better operation position, guarantee the desilting effect to submarine silt.

Preferably: the dredge pump is provided with two, including first dredge pump and second dredge pump, installs first pipeline, the entry in the export of first dredge pump and installs first mud pipe of inhaling, installs second pipeline, the entry in the export of second dredge pump and installs the second and inhale mud pipe, installs first suction nozzle at the lower extreme of first mud pipe of inhaling, inhales mud pipe's lower extreme at the second and installs the second suction nozzle.

Preferably: the two lifting pipes comprise a first lifting pipe and a second lifting pipe, and the lower ends of the first lifting pipe and the second lifting pipe are provided with jet dredging components; the first suction nozzle is fixedly connected with the first lifting pipe, and the second suction nozzle is fixedly connected with the second lifting pipe.

Preferably: the lifting driving assembly of the first lifting pipe comprises a first lifting motor arranged on the bottom plate and a first lifter driven by the first lifting motor, and the first lifting pipe is arranged in the first lifter; the lifting driving assembly of the second lifting pipe comprises a second lifting motor arranged on the bottom plate and a second lifter driven by the second lifting motor, and the second lifting pipe is arranged in the second lifter.

Preferably: the first lifter and the second lifter have the same structure, and both comprise a shell and a worm and gear structure positioned in the shell, a threaded hole is formed in the center of a worm gear, the outer wall of the lifting pipe is provided with threads, the lifting pipe is positioned in the threaded hole of the worm gear, and a motor shaft of the lifting motor is in butt joint with the outer end of the worm of the corresponding lifter.

Preferably: the jet dredging component comprises a cylindrical water tank with a conical bottom, a drill bit with a spiral impeller is installed at the bottom of the water tank, the middle of the top wall of the water tank is connected with a lifting pipe through a bearing, the lower end of the lifting pipe is located in the inner cavity of the water tank, and a plurality of jet bent pipes are further installed on the side wall of the water tank.

Preferably: the translation rail is provided with a rail groove, the edge of the bottom plate is provided with a rail wheel falling into the rail groove, and the translation rail further comprises a translation motor driving the rail wheel to rotate.

Preferably: the lateral side of the front part of the translation track is provided with a front limiting plate, the lateral side of the rear part of the translation track is provided with a rear limiting plate, the front limiting plate and the rear limiting plate are both provided with contact switches, and the lateral part of the bottom plate is provided with a limiting rod for triggering the contact switches.

Preferably: the first conveying pipeline, the second conveying pipeline, the first mud suction pipeline and the second mud suction pipeline are all metal corrugated pipelines.

Preferably: and a collecting tank with a sludge discharge pipe is also arranged at the stern of the ship body, and the first conveying pipeline and the second conveying pipeline are both connected with the collecting tank.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a front view of the dredging device in FIG. 1;

FIG. 3 is a schematic perspective view of the main body of the dredging apparatus in FIG. 1;

fig. 4 is a schematic structural view of the jet dredging assembly in fig. 3.

In the figure:

1. a ship control room; 2. a hull; 3. a window; 4. a dredging device; 4-1, a front bracket; 4-2, front limiting plates; 4-3, a translation track; 4-4, connecting the cross beam; 4-5, a first lifter; 4-6, a water pump; 4-7, a first elevator tube; 4-8, a first sludge suction pipeline; 4-9, a first suction nozzle; 4-10, jet dredging components; 4-10-1, a water tank; 4-10-2, bearing; 4-10-3, jet flow bent pipe; 4-10-4, a drill bit; 4-11, a first mud pump; 4-12, a first delivery conduit; 4-13, a second lifting motor; 4-14, rail wheels; 4-15, a second elevator tube; 4-16, a second sludge suction pipeline; 4-17, a second suction nozzle; 4-18, rear limiting plate; 4-19, a rear bracket; 4-20, a bottom plate; 4-21, a second delivery conduit; 4-22, a second mud pump; 4-23, a first lifting motor; 4-24, a second lifter; 4-25, a translation motor; 5. a collection tank; 6. a sludge discharge pipe.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail.

Referring to fig. 1, the dredging ship apparatus for environmental protection engineering of the present invention includes a hull 2 with a ship engine control room 1; a window 3 arranged along the length direction is arranged in the middle of the ship body 2, and a dredging device 4 is arranged in the window 3. The hull 2 is controlled to move through the ship engine control room 1, the window 3 enables the middle part of the hull 2 to be communicated up and down, an installation and operation area is provided for the dredging device 4, and the operation of the dredging device 4 is also carried out in the ship engine control room 1.

Referring to fig. 2 and 3, it can be seen that:

the dredging device 4 comprises a front bracket 4-1 and a rear bracket 4-19 which are arranged on the ship body 2, a connecting beam 4-4 is arranged between the tops of the front bracket and the rear bracket, and a translation track 4-3 is arranged between the bottoms of the front bracket and the rear bracket. The front bracket 4-1, the rear bracket 4-19, the connecting beam 4-4 and the translation rail 4-3 constitute a supporting frame structure, which is located above the window 3.

A base plate 4-20 which moves in translation is arranged on the translation track 4-3. In this embodiment, a track groove is formed on the translation track 4-3, a track wheel 4-14 falling into the track groove is installed on the edge of the bottom plate 4-20, and the translation device further comprises a translation motor 4-25 for driving the track wheel 4-14 to rotate. As shown in the figure, two track wheels 4-14 are respectively arranged at the left side edge and the right side edge of the bottom plate 4-20, the translation motors 4-25 are arranged in a left-right two manner, the translation motor 4-25 at the left side drives one track wheel 4-14 at the left side to rotate, the translation motor 4-25 at the right side drives one track wheel 4-14 at the right side to rotate, and the two translation motors 4-25 act synchronously.

The bottom plate 4-20 is provided with a water pump 4-6 and a mud pump, the outlet of the mud pump is provided with a conveying pipeline, the inlet of the mud pump is provided with a mud sucking pipeline, and the lower end of the mud sucking pipeline is provided with a suction nozzle. Under the pumping action of the dredge pump, mud at the bottom of the water enters the suction nozzle, rises along the dredge pipeline, and is conveyed through the conveying pipeline after passing through the dredge pump.

The dredging device 4 further comprises a lifting pipe, a lifting driving component for driving the lifting pipe to move up and down is arranged on the bottom plate 4-20, a jet dredging component 4-10 is arranged at the lower end of the lifting pipe, an outlet of a water pump 4-6 is connected with the upper end of the lifting pipe through a hose, a suction nozzle is fixedly arranged at the lower part of the lifting pipe through a support, and the suction nozzle is positioned above the jet dredging component 4-10.

The lifting driving component is used for adjusting the height of the lifting pipe and the jet flow dredging component 4-10 at the bottom of the lifting pipe, the adjusted jet flow dredging component 4-10 is positioned on the surface of an underwater sludge layer, which is the best position for dredging operation, and the jet flow dredging component 4-10 can not be pricked into sludge and can not be far away from the surface of the sludge. The jet dredging component 4-10 is used for providing a jet dredging effect, and particularly, the jet dredging component 4-10 sprays water sources to surrounding sludge in a jet manner, so that the sludge surface is loosened, and the sludge is blown and stirred.

In the embodiment, two dredge pumps are arranged, including a first dredge pump 4-11 and a second dredge pump 4-22. A first conveying pipeline 4-12 is arranged at the outlet of the first dredge pump 4-11, a first dredge pipeline 4-8 is arranged at the inlet, a second conveying pipeline 4-21 is arranged at the outlet of the second dredge pump 4-22, a second dredge pipeline 4-16 is arranged at the inlet, a first suction nozzle 4-9 is arranged at the lower end of the first dredge pipeline 4-8, and a second suction nozzle 4-17 is arranged at the lower end of the second dredge pipeline 4-16.

In this embodiment, the number of the lifting pipes is two, and the lifting pipes include a first lifting pipe 4-7 and a second lifting pipe 4-15, and the lower ends of the first lifting pipe and the second lifting pipe are respectively provided with a jet dredging component 4-10. The first suction nozzle 4-9 is fixedly connected with the first lifting pipe 4-7 through a support, and the second suction nozzle 4-17 is fixedly connected with the second lifting pipe 4-15 through a support. Thus, when the first dredge pump 4-11 and the second dredge pump 4-22 are operated, the mud blown and stirred at the bottom of the water flows through the first channel formed by the first suction nozzle 4-9, the first dredge pipe 4-8, the first dredge pump 4-11 and the first delivery pipe 4-12 and the second channel formed by the second suction nozzle 4-17, the second dredge pipe 4-16, the second dredge pump 4-22 and the second delivery pipe 4-21, respectively.

In this embodiment, the first conveying pipeline 4-12, the second conveying pipeline 4-21, the first sludge suction pipeline 4-8 and the second sludge suction pipeline 4-16 are all metal corrugated pipelines, and the metal corrugated pipelines are existing components and are obtained by market purchase. The metal corrugated pipeline is selected as a conveying pipeline and a mud sucking pipeline, and has the following functions: the metal corrugated pipeline has certain telescopic deformation capacity, when the lifting pipe and the jet flow dredging component 4-10 are driven to do lifting action through the lifting driving device, the first sludge suction pipeline 4-8, the second sludge suction pipeline 4-16, the first conveying pipeline 4-12 and the second conveying pipeline 4-21 do corresponding telescopic action on the basis of keeping the pipeline function, and when the bottom plate 4-20 and the accessory components of the bottom plate 4-20 do transverse reciprocating movement along the translation track 4-3, the first conveying pipeline 4-12 and the second conveying pipeline 4-21 do corresponding telescopic action on the basis of keeping the pipeline function.

The elevation driving assembly of the first elevation pipe 4-7 includes a first elevation motor 4-23 installed on the base plate 4-20 and a first elevator 4-5 driven by the first elevation motor 4-23, the first elevation pipe 4-7 is installed in the first elevator 4-23; the elevation driving assembly of the second elevation tube 4-15 includes a second elevation motor 4-13 installed on the base plate 4-20 and a second elevation 4-24 driven by the second elevation motor 4-13, and the second elevation tube 4-15 is installed in the second elevation 4-24.

In this embodiment, the first lifter 4-5 and the second lifter 4-24 have the same structure, and each of them includes a housing and a worm gear structure located in the housing, and when the driving worm rotates, the worm gear rotates. The center of the worm wheel is provided with a threaded hole, the outer wall of the lifting pipe is provided with threads, the lifting pipe is positioned in the threaded hole of the worm wheel, and a motor shaft of the lifting motor is in butt joint connection with the outer end of the worm of the corresponding lifter. Thus, the first lifting motor 4-23 drives the worm of the first lifter 4-5 to rotate so as to make the worm wheel rotate, the first lifting pipe 4-7 moves up and down, the second lifting motor 4-13 drives the worm of the second lifter 4-24 to rotate so as to make the worm wheel rotate, and the second lifting pipe 4-15 moves up and down. Due to the installation relationship between the first sludge suction pipe 4-8 and the first lifting pipe 4-7 and the installation relationship between the second sludge suction pipe 4-16 and the second lifting pipe 4-15, the first lifting pipe 4-7 and the second lifting pipe 4-15 only move up and down and cannot rotate.

Referring to fig. 4, it can be seen that:

the jet flow dredging component 4-10 comprises a cylindrical water tank 4-10-1 with a conical bottom, a drill bit 4-10-4 with a spiral impeller is installed at the bottom of the water tank 4-10-1, the middle of the top wall of the water tank 4-10-1 is connected with a lifting pipe through a bearing 4-10-2, the lower end of the lifting pipe is located in an inner cavity of the water tank 4-10-1, and a plurality of jet flow bent pipes 4-10-3 are further installed on the side wall of the water tank 4-10-1. The action principle is as follows: high-pressure water is injected into the water tank 4-10-1 through the lifting pipe and then is sprayed out from each jet flow bent pipe 4-10-3, because the spraying direction is approximately tangential, the water tank 4-10-1 and the drill bit 4-10-4 at the bottom rotate under the action of reaction force, the water tank 4-10-1 is required to be positioned at the junction position of the water body and the mud surface, the drill bit 4-10-4 is pricked into the mud, the mud is stirred by the spiral impeller to be dispersed in the process of rotating the drill bit 4-10-4, and the mud is further loosened by matching with the impact action of water flow above and is mixed with the surrounding water body to form mud.

In order to limit the range of movement of the main body portion of the dredging device 4, avoiding over-range movement, in the present embodiment: a front limiting plate 4-2 is arranged on the side of the front part of the translation track 4-3, a rear limiting plate 4-18 is arranged on the side of the rear part, contact switches are arranged on the front limiting plate 4-2 and the rear limiting plate 4-18, and a limiting rod for triggering the contact switches is arranged on the side part of the bottom plate 4-20. When the main body part of the dredging device 4 moves to the front part, the limiting rod is contacted with a contact switch on the front limiting plate 4-2; when the main body part of the dredging device 4 is moved to the rear, the stopper rod comes into contact with the contact switch on the rear stopper plate 4-18.

In this embodiment, as shown in fig. 1, a collecting tank 5 having a sludge discharge pipe 6 is further installed at the stern position of the hull 2, and both the first conveying piping 4-12 and the second conveying piping 4-21 are connected to the collecting tank 5. The mud is drawn up from the bottom and then into a collection tank 5. The collecting tank 5 is used as a transfer mud tank, a mud pump can be arranged in the collecting tank 5, and the mud pump transfers and conveys mud in the tank to a mud barge stopped at the side position of the dredging ship equipment through a mud discharge pipe 6.

The operation process comprises the following steps:

the dredging ship equipment runs and stops in a dredging water area; preliminarily guiding the lowering depth of the jet dredging components 4-10 by adopting data surveyed in advance, operating in a control room 1 of a ship machine, and lowering the two jet dredging components 4-10 to the depth;

starting a water pump 4-6, pumping a water source from a water body on the ship side by the water pump 4-6, supplying the water source to a first lifting pipe 4-7 and a second lifting pipe 4-15 through a hose after pressurization, enabling a high-pressure water source to enter a water tank 4-10-1 of two jet dredging components 4-10 and then be ejected out by each jet elbow 4-10-3, and enabling the water tank 4-10-1 and a drill bit 4-10-4 at the bottom of the water tank 4-10-1 to rotate to stir and blow and stir sludge to form slurry; starting the two mud pumps, pumping the mud at the bottom upwards and finally conveying the mud into a collecting tank 5;

whether the degree of depth that efflux desilting subassembly 4-10 was transferred is reasonable is judged according to two pipeline exhaust mud consistency to on-the-spot operating personnel, and when the consistency was low excessively, the constant height of efflux desilting subassembly 4-10 continued to be transferred, and when the consistency was too high, promoted the constant height with efflux desilting subassembly 4-10, avoided appearing mud consistency and crossed pipeline and the pump body jam problem that the desilting efficiency that leads to reduces the problem and mud consistency is too high and lead to excessively.

Claims (10)

1. A dredging boat device for environmental engineering comprises a boat body (2) with a boat engine control room (1); the method is characterized in that: a window (3) arranged along the length direction is arranged in the middle of the ship body (2), and a dredging device (4) is arranged at the position of the window (3); the dredging device (4) comprises a front support (4-1) and a rear support (4-19) which are arranged on the ship body (2), a connecting beam (4-4) is arranged between the tops of the front support and the rear support, a translation track (4-3) is arranged between the bottoms of the front support and the rear support, and a bottom plate (4-20) which moves in a translation manner is arranged on the translation track (4-3); a water pump (4-6) and a mud pump are arranged on the bottom plate (4-20), a delivery pipeline is arranged at the outlet of the mud pump, a mud suction pipeline is arranged at the inlet of the mud pump, and a suction nozzle is arranged at the lower end of the mud suction pipeline; the dredging device (4) further comprises a lifting pipe, a lifting driving component for driving the lifting pipe to move up and down is installed on the bottom plate (4-20), a jet dredging component (4-10) is installed at the lower end of the lifting pipe, an outlet of a water pump (4-6) is connected with the upper end of the lifting pipe through a hose, a suction nozzle is installed and fixed at the lower portion of the lifting pipe through a support, and the suction nozzle is located above the jet dredging component (4-10).

2. The dredging ship apparatus for environmental protection engineering as set forth in claim 1, wherein: the mud pumps are provided with two mud pumps, and comprise a first mud pump (4-11) and a second mud pump (4-22), wherein a first conveying pipeline (4-12) is installed at an outlet of the first mud pump (4-11), a first mud suction pipeline (4-8) is installed at an inlet, a second conveying pipeline (4-21) is installed at an outlet of the second mud pump (4-22), a second mud suction pipeline (4-16) is installed at an inlet, a first suction nozzle (4-9) is installed at the lower end of the first mud suction pipeline (4-8), and a second suction nozzle (4-17) is installed at the lower end of the second mud suction pipeline (4-16).

3. The dredger equipment for environmental protection engineering according to claim 2, characterized in that: the two lifting pipes are arranged and comprise a first lifting pipe (4-7) and a second lifting pipe (4-15), and the lower ends of the first lifting pipe and the second lifting pipe are respectively provided with a jet dredging component (4-10); the first suction nozzle (4-9) is fixedly connected with the first lifting pipe (4-7), and the second suction nozzle (4-17) is fixedly connected with the second lifting pipe (4-15).

4. The dredger equipment for environmental protection engineering according to claim 3, characterized in that: the lifting driving component of the first lifting pipe (4-7) comprises a first lifting motor (4-23) arranged on the bottom plate (4-20) and a first lifter (4-5) driven by the first lifting motor (4-23), and the first lifting pipe (4-7) is arranged in the first lifter (4-5); the lifting driving component of the second lifting pipe (4-15) comprises a second lifting motor (4-13) arranged on the bottom plate (4-20) and a second lifter (4-24) driven by the second lifting motor (4-13), and the second lifting pipe (4-15) is arranged in the second lifter (4-24).

5. The dredger equipment for environmental protection engineering according to claim 4, characterized in that: the first lifter (4-5) and the second lifter (4-24) are identical in structure and respectively comprise a shell and a worm gear structure positioned in the shell, a threaded hole is formed in the center of a worm gear, threads are arranged on the outer wall of the lifting pipe, the lifting pipe is positioned in the threaded hole of the worm gear, and a motor shaft of the lifting motor is in butt joint with the outer end of the worm of the corresponding lifter.

6. The dredger equipment for environmental protection engineering according to claim 5, characterized in that: the jet flow dredging component (4-10) comprises a cylindrical water tank (4-10-1) with a conical bottom, a drill bit (4-10-4) with a spiral impeller is installed at the bottom of the water tank (4-10-1), the middle of the top wall of the water tank (4-10-1) is connected with a lifting pipe through a bearing (4-10-2), the lower end of the lifting pipe is located in the inner cavity of the water tank (4-10-1), and a plurality of jet flow bent pipes (4-10-3) are further installed on the side wall of the water tank (4-10-1).

7. The dredger equipment for environmental protection engineering according to claim 6, characterized in that: the translation track (4-3) is provided with a track groove, the edge of the bottom plate (4-20) is provided with a track wheel (4-14) falling into the track groove, and the translation track also comprises a translation motor (4-25) driving the track wheel (4-14) to rotate.

8. The dredger equipment for environmental protection engineering according to claim 7, characterized in that: a front limiting plate (4-2) is arranged on the side of the front part of the translation track (4-3), a rear limiting plate (4-18) is arranged on the side of the rear part of the translation track, contact switches are arranged on the front limiting plate (4-2) and the rear limiting plate (4-18), and limiting rods for triggering the contact switches are arranged on the side parts of the bottom plates (4-20).

9. The dredger equipment for environmental protection engineering according to claim 8, characterized in that: the first conveying pipeline (4-12), the second conveying pipeline (4-21), the first sludge suction pipeline (4-8) and the second sludge suction pipeline (4-16) are all metal corrugated pipelines.

10. The dredger equipment for environmental protection engineering according to claim 9, characterized in that: a collecting tank (5) with a mud pipe (6) is also arranged at the stern position of the ship body (2), and the first conveying pipeline (4-12) and the second conveying pipeline (4-21) are both connected with the collecting tank (5).

Images