CN210134470U - Dredging operation system under the wharf - Google Patents

Abstract

The utility model belongs to the technical field of the engineering of dredging or ocean engineering technique field provide a pier below dredging operation system, including hull body, tail-end connection box, driving platform system, winch jack-up system, cross-over system, dredging equipment system, hull balanced system and hull positioning system. The infinitely expandable platform architecture design mode enables the dredging operation platform to be widely suitable for the construction of various types of wharfs; the integrated dredging equipment system meets the dredging requirements of large excavation depth of a small platform and various types of soil; the swinging mechanical arm structure is used for safely positioning the dredging operation platform; the travelling platform system and the transverse sweeping system are matched with each other to realize all-direction dredging operation below the wharf; the ship body balance system can be used for balancing the change of the gravity center of the platform in the construction process, so that the construction safety is ensured; the problem of difficult operation and construction in a limited space below a wharf is solved through a modularized, integrated and full-automatic design method, and the safety and the economical efficiency of dredging operation are improved.

Description

Dredging operation system under the wharf

technical field

The utility model belongs to the technical field of dredging engineering or the technical field of marine engineering, in particular to a dredging operation system under a wharf.

Background technique

With the rapid development of international trade, the construction and application of wharfs have received unprecedented attention. Among them, high-piled wharf, as a relatively important structural form in modern wharf forms, has a very wide range of applications in the lower reaches of rivers, estuaries and coasts.

The high-piled wharf is a transparent structure, which is mainly composed of the upper structure and the pile foundation. The pile foundation of a high-piled wharf is a water-blocking structure. During the construction of the pile foundation and after the completion of the wharf, due to the impact of the pile foundation on the dynamic conditions of the near-shore area, the seabed within a certain range of the project area will be scoured and deposited. The monitoring results of a large number of high-piled wharfs show that due to the damping effect of the pile foundation group of the high-piled wharf, the local flow velocity in the pile foundation under the wharf is reduced, which greatly reduces the sand-carrying capacity of the water flow. Serious sedimentation has occurred in all of them, which has caused great harm to the high pile foundation, which may cause pile fractures, weakened wharf bearing capacity, bank slopes, landslides or landslides. Especially in the past 20 years, the sediment below the wharf The siltation problem is quite serious, and the amount of siltation and sediment to be cleaned is very large. In order to avoid the influence of sediment pressure on the wharf pile foundation after siltation, it is very important and urgent to implement the cleaning and maintenance of the silt and sediment under the wharf.

Although for the sediment deposited at the front of the wharf, using traditional dredging platforms and equipment for dredging can produce good results. However, due to the complex structure of the pile foundation under the high-pile type wharf, the protection requirements for the pile foundation group are relatively high, which makes the dredging work environment under the wharf relatively harsh, and it is very difficult to use traditional dredging platforms and equipment for construction. , and the related dredging and dredging equipment generally has defects such as backward technology, high energy consumption, low work efficiency, low mud concentration, single function, poor adaptability to water depth and soil quality. At the same time, the traditional dredging equipment requires relevant personnel to carry out on-site operation and construction under the wharf, which has a great potential safety hazard. Therefore, it is of great economic value and practical significance to research and develop a new set of high-efficiency, energy-saving and safe dredging platforms and equipment suitable for dredging under the wharf to cope with the huge dredging market under the wharf.

Although domestic and foreign research institutions have researched related dredging platforms and equipment, the research products are nothing more than small cutter suction vessels or pump suction dredging vessels with high pressure flushing. For small cutter suction ships or pump suction dredging ships with high pressure flushing, the hull is pulled and positioned by positioning piles or manually pulled wire ropes wound to the high pile foundation. The forward movement needs to be repositioned, resulting in low dredging construction efficiency, and due to the limited construction space under the wharf (usually the effective space height from the water surface to the wharf is about 2m), the frequency of ship travel and water level changes is high. The operation of positioning and dredging construction is relatively difficult, and the personal safety of operators is low. At the same time, the technology of these dredging equipment is relatively backward, with low work efficiency, high energy consumption, low mud concentration, shallow excavation depth, poor adaptability to soil quality, and low degree of automation, requiring relevant operators to operate in a narrow space under the wharf Real-time operation is very likely to cause great personal safety hazards for operators who carry out construction under the wharf with limited space and harsh environment.

SUMMARY OF THE INVENTION

The purpose of the present utility model is to provide a dredging operation system under the wharf, starting from the special environment under the wharf, and adopting the construction method of the combination of the driving platform system and the sweeping system to ensure that the entire dredging system can be efficiently completed in the limited space under the wharf. The dredging task of the azimuth, and the design of each module of the platform is carried out based on this construction method. The modularized and integrated design mode can meet the environmental requirements of different wharf dredging operations. At the same time, the infinitely scalable platform architecture design can minimize ineffective operation time, improve dredging efficiency, and reduce construction safety hazards. The dredging operation system under the wharf is suitable for clearing the sediment deposited under the wharf, which can solve the technical problems existing in the process of dredging the small space under the wharf, and ensure the safety of personnel and equipment through the fully automated design mode. Efficiently complete the clean-up of sediment deposited under the wharf.

In order to achieve the above goals, the utility model provides the following technical solutions:

A dredging operation system under a wharf includes a hull body, a stern box, a traveling platform system, a winch hoisting system, a sweeping system, a dredging equipment system, a hull balance system and a hull positioning system.

The hull body adopts a simplified open square hull structure design, which not only meets the requirements of narrow space operation under the wharf and dredging requirements of large excavation depth, but also meets the design requirements of carrying the weight of the entire dredging system and equipment. The upper and lower parts of the hull are designed with The first driving track and the second driving track are used to carry the motion of the driving platform system and the hull balance system respectively, and a ballast water tank is arranged at the bow position, and the ballast water in the ballast water tank is pumped by the ballast water pump;

The stern box adopts a floating box structure design, and any number of stern boxes can be installed at the stern of the hull to meet the size requirements of dredging of different terminals. Above and below the stern box are respectively installed the first running track and the second one. The running track can be connected with the first running track and the second running track of the hull body. The design size of the tail box meets the transportation requirements on land and sea. The installation and disassembly are convenient and time-saving, which helps to reduce the ineffective operation time. ;

The traveling platform system is installed on the first traveling track through the trolley pulley system; the winch hoisting system and the sweeping system are installed on the traveling platform system. The required front and rear position change requirements;

The dredging equipment system adopts an integrated structural design, which integrates the mud pump and the reamer system, and adopts a close connection arrangement before and after, which reduces the overall size of the dredging equipment and improves the dredging efficiency without affecting each other. , reducing the energy consumption of dredging. The dredging equipment system adopts cantilever dredging construction or cantilever dredging construction.

The winch hoisting system includes a hoisting motor, a wire rope and a winch; for the cantilever dredging equipment system, the flange is directly connected to the mud pipeline, and the mud pipeline is provided with a fixed collar, and the winch is connected to the mud pipeline through the wire rope. The fixed collar is connected, and the hoisting motor is connected with the winch by the cassette, which controls the lowering and recovery of the cantilever dredging equipment system during the dredging process; for the cantilever dredging equipment system, its end is directly connected with the winch through the wire rope, and the lifting is carried out. The motor is connected with the winch by the cassette, and controls the lowering and recovery of the suspended dredging equipment system.

For the cantilever dredging equipment system, the sweeping system is a rotating system, which includes a rotating gear train and a gear train driving motor; the cantilever dredging equipment system is directly connected to the mud conveying pipe by flange, and the mud conveying pipe is provided with circular Cylinder bracket, the rotating gear train is connected with the mud conveying pipeline through the cylindrical support, the gear train driving motor is connected with the rotating gear train, and the cantilever dredging equipment system and its mud conveying pipeline are controlled to perform left and right sweeping construction during the dredging process, so as to increase the dredging performance. The dredging range of the working platform can solve the problem of difficult dredging near the pile foundation under the wharf.

For the suspended dredging equipment system, the sweeping system can include a pulley system, a beam and a steel bracket; the beam is connected with the traveling platform system through the steel bracket; the pulley system is embedded in the beam and connected with the end of the suspended dredging equipment system, Control the dredging equipment system to carry out left and right sweep dredging construction.

The hull balance system consists of a counterweight block, a counterweight pulley system and a counterweight drive motor. The counterweight block is suspended on the second rail through the counterweight pulley system. Drive the movement of the hull balance system, so as to adjust the balance of the hull during the dredging process and ensure the safety of the dredging operation platform;

The hull positioning system uses a fully automated robotic arm and a mechanical gripper structure to position the hull on the high pile below the dock. The hull positioning system can realize the safe dredging construction of the dredging operation platform when the ship travels and the water level changes, and at the same time meets the protective requirements for the high pile foundation of the wharf.

Compared with the prior art, the innovation and advantages of the present utility model are:

(1) The construction method that combines the driving platform system and the sweeping system is adopted, which reduces the ineffective operation time that the platform needs to be positioned frequently during the construction process, and greatly improves the construction efficiency of the dredging operation platform.

(2) The automatic traction and positioning of the dredging operation platform is realized by the structural form of a fully automatic mechanical arm and a mechanical gripper, so as to ensure the construction safety under the conditions of ship travel and water level changes under the wharf.

(3) The infinitely expandable platform frame and design mode can arbitrarily change the size of the platform in the length direction to meet the construction requirements of different dock dredging.

(4) The integrated excavation and conveying system reduces the overall size of the dredging system, improves the dredging efficiency, and reduces the energy consumption of dredging, and the two methods of cantilever and cantilever construction are used, which can meet the needs of different dock areas. , The dredging operation requirements of different mud and different excavation depths, and the applicability is wide.

(5) The entire platform adopts fully automatic control of dredging construction, and there is no personnel under the wharf during the construction operation, which improves the safety and operability of the dredging construction operation.

Description of drawings

FIG. 1 is an overall schematic diagram of a dredging operation platform and a system under a wharf provided by an embodiment of the present invention.

FIG. 2 is a schematic diagram of the hoisting system and the rotating system of the traveling platform winch provided by the embodiment of the present invention.

FIG. 3 is a schematic diagram of a hull balance system provided by an embodiment of the present invention.

FIG. 4 is a schematic diagram of a hull positioning system provided by an embodiment of the present invention.

Description of reference numerals

Hull body 1, stern box 2, driving platform system 3, dredging equipment system 4, winch lifting system 5, rotating system 6, hull balance system 7, hull positioning system 8, first driving track 9, second driving track 10 , ballast water tank 11, ballast water pump 12, trolley pulley system 13, mud pipeline 14, mud pump system 15, reamer system 16, beam 17, fixed collar 18, pulley system 19, steel bracket 20, cylinder Bracket 21, hoisting motor 22, wire rope 23, winch 24, rotating gear train 25, gear train drive motor 26, counterweight pulley system 27, counterweight drive motor 28, counterweight block 29, mechanical arm 30, mechanical gripper Hand 31 , drive motor 32 .

Detailed ways

In order to further understand the utility model content, features and effects of the present utility model, the following examples are listed herewith, and the present utility model is described in detail as follows in conjunction with the accompanying drawings:

Please refer to Figure 1 to Figure 4, a dredging operation system under the wharf, including the hull body 1, the tail box 2, the driving platform system 3, the dredging equipment system 4, the winch lifting system 5, the sweeping system, the hull balance system 7, Hull Positioning System 8.

in:

The hull body 1 adopts a simplified open-type square hull structure design, which not only meets the requirements of narrow space operation under the wharf and large excavation and deep dredging, but also meets the design requirements of carrying the weight of the entire dredging equipment. The driving track 9 is used to carry the forward and backward movement of the driving platform system 3 during the dredging process. A second driving track 10 is installed below the hull body 1 to support the forward and backward movement of the hull balance system 7. The position of the bow of the hull body 1 is set A ballast water tank 11 and a ballast water pump 12 are provided. The ballast water tank 11 is connected to the ballast water pump 12 , and the ballast water in the ballast water tank 11 is pumped by the ballast water pump 12 .

The stern box 2 is designed with a floating box structure and can be extended infinitely on the dredging operation platform below the wharf. Any number of stern boxes 2 can be installed at the rear of the hull body 1 to meet the size requirements of different wharf dredging. A first running track 9 is installed above the tail box 2, and a second running track 10 is installed below. The design size of the box 2 meets the requirements of land and water transportation, and the installation and disassembly are convenient and time-saving, which helps to reduce the ineffective operation time.

At present, the dredging ships of the existing wharf usually adopt a small open-type ship-type design, but the present utility model adopts an epitaxial structure design idea, that is, an open-type hull body is adopted, and any number of floating box structures are rigidly connected at the tail of the hull body 1 Tail box 2 to meet the dredging size requirements of the wharf.

The traveling platform system 3 is installed on the first traveling track 9 through the trolley pulley system 13, and moves on the first traveling track 9 through the trolley pulley system 13; the traveling platform system 3 is equipped with a winch hoisting system 5 and a sweeping system , the driving platform system 3 carries the entire dredging system and equipment, and meets the front and rear position change requirements required in the dredging process through its own movement on the first driving track 9 .

The dredging equipment system 4 adopts an integrated structure design, which integrates the mud pump system 15 and the reamer system 16, and adopts the arrangement of the reamer system 16 and the mud pump system 15 in close connection before and after, under the premise of not affecting each other. The overall size of the dredging equipment is reduced, the dredging efficiency is improved, and the dredging energy consumption is reduced. The dredging equipment system 4 can adopt cantilever dredging construction and cantilever dredging construction.

In the present utility model, the dredging equipment system 4 can use Damen DOP series products, and the Damen DOP dredging equipment adopts an integrated design idea, integrating the mud pump system and the reamer system into one, so that the dredging equipment system can be reduced. the overall size, while improving the dredging efficiency.

The winch hoisting system 5 includes a hoisting motor 22, a steel wire rope 23 and a winch 24; for the cantilever dredging equipment system 4, it is directly connected to the mud conveying pipeline 14 by a flange plate, and the mud conveying pipeline 14 is provided with a fixed sleeve The ring 18, the winch 24 is connected with the fixed collar 18 through the wire rope 23, the hoisting motor 22 is connected with the winch 24 by the cassette, and controls the lowering and recovery of the cantilever dredging equipment system 4 during the dredging process; The end of the system 4 is directly connected with the winch 24 through the wire rope 23, and the hoisting motor 22 is connected with the winch 24 by a cassette, and controls the lowering and recovery of the suspended dredging equipment system 4.

For the cantilever dredging equipment system 4, the sweeping system is a rotating system 6, including a rotating gear train 25 and a gear train driving motor 26; the cantilever dredging equipment system 4 is directly connected to the mud conveying pipeline 14 by a flange plate, and the mud conveying The pipeline 14 is provided with a cylindrical support 21, the rotating gear train 25 is connected with the mud conveying pipeline 14 through the cylindrical support 21, the gear train driving motor 26 is connected with the rotating gear train 25, and controls the cantilever dredging equipment system 4 and its mud conveying The pipeline 14 is swept left and right during the dredging process.

For the suspended dredging equipment system 4, the sweeping system includes a pulley system 19, a beam 17 and a steel bracket 20; the beam 17 is connected to the traveling platform system 3 through the steel bracket 20; the pulley system 19 is embedded in the beam 17, and is connected with the suspension type The end of the dredging equipment system 4 is connected to control the dredging equipment system 4 to carry out left and right sweeping dredging construction.

The hull balance system 7 includes a counterweight pulley system 27 , a counterweight drive motor 28 and a counterweight block 29 . The counterweight block 29 is suspended on the second rail 10 through the counterweight pulley system 27 and controlled by the counterweight drive motor 28 . The counterweight pulley system 27 drives the movement of the hull balance system 7, so as to adjust the balance of the hull during the dredging process.

The hull positioning system 8 adopts the structural form of a fully automated mechanical arm 30 and a mechanical gripper 31. The drive motor 32 provides power for the robotic arm 30 and the mechanical gripper 31. The hull positioning system 8 can realize dredging operations under the conditions of ship travel and water level changes. The safe dredging construction of the platform also meets the protective requirements for the high-pile pile foundation of the wharf.

At present, the positioning of the dredging ships under the existing wharf is usually by positioning piles or manually winding steel wire ropes to the pile foundation, and the positioning piles are usually used on the cutter suction ship. After the task, the cutter suction ship is towed forward by the positioning pile, and the positioning of the hull is completed to realize the excavation task of the next cycle. The work of the positioning pile requires a relatively large space. However, the space under the high-piled wharf is limited, and it is difficult to use positioning piles to position the dredging ship. The manual winding of the wire rope to the pile foundation requires personnel to operate between the pile foundations under the wharf, and the operator's personal Security performance is low. Therefore, the utility model independently designs the structure form of the multi-stage mechanical arm and the mechanical gripper. The mechanical arm has a built-in complex buffer system, and the mechanical arm and the mechanical gripper are automatically controlled by the driving motor. Safe and stable construction of dredging operation platform under changing water surface conditions.

To sum up, the utility model has the following characteristics:

(1) Platform modular design, manufacture, assembly, transportation and assembly;

(2) Equipped with dual functions of cantilever dredging construction and cantilever dredging construction;

(3) The hull is equipped with dynamic balance compensation function;

(4) Fully automated unmanned dredging operations under the high-piled wharf can be realized (operators perform remote operation);

(5) Realize the continuous operation of the excavation and cutting system.

Further, the construction method of the dredging operation system under the wharf provided by the present invention comprises the following steps:

Step 1, the dredging operation platform under the wharf and the hull body 1 of the system are stationed in the construction area, the hull positioning system 8 starts to operate, and the rigid mechanical arm 30 and the mechanical gripper 31 are extended and grasped on the high pile of the wharf at a suitable position;

Step 2, install a sufficient number of stern boxes 2 at the rear of the hull body 1 according to the width of the wharf, and debug the system equipment;

Step 3: Select the dredging construction method according to the structural characteristics of the wharf, the dredging soil quality and the dredging depth requirements. When the dredging soil quality is relatively hard soil or the dredging depth is less than 12m, the cantilever dredging construction method is used for operation. The winch on the driving platform system 3 The lifting system 5 lowers the dredging equipment system 4 and adjusts the initial position of the dredging equipment system 4. During the dredging construction operation, the sweeping system controls the dredging equipment system to carry out the left and right sweeping construction operations, and the rotation angle of the sweeping system is 10° on the left and right , In order to ensure the safety of the piles, a safety distance of 0.5m is reserved on each side of the pile foundation during operation; when the dredging soil is relatively loose or the dredging depth is greater than 12m, the suspension type dredging construction method is used for operation, and the driving platform system The winch lifting system 5 on the 3 lowers the dredging equipment system 4 to adjust the initial position of the dredging equipment system 4. During the dredging construction operation, the pulley system 19 moves left and right on the beam 17, and controls the dredging equipment system 4 to sweep left and right dredging construction;

Step 4. After the dredging equipment system 4 completes a cycle of sweeping construction, the driving platform system 3 moves forward by 0.1 m, and at the same time, the hull balance system 7 moves 0.1 m in the opposite direction of the moving direction of the driving platform system 3, and then the dredging equipment system 4 moves forward. Continue the dredging work, and repeat the construction work in this way.

At present, the dredging vessels constructed under the wharf usually use positioning piles or wire rope winding pile foundations for positioning. During the construction process, the hull is swept left and right with the positioning pile or the wire rope winding point as the origin, which is inefficient. Personal safety under the wharf and the protection requirements for the pile foundation cannot be guaranteed.

On the other hand, the utility model designs a sweeping system, which adopts a rotating gear train to connect a cylindrical support, and is rigidly connected with the mud conveying pipeline, so as to control the left and right sweeping and dredging construction of the mud conveying pipeline and the dredging equipment system. At the same time, the hull positioning system is designed, and the dredging operation platform is positioned by the fully automated mechanical arm and mechanical gripper structure. The hull positioning system has relatively complex structural characteristics and can be applied to the construction environment with ship traveling waves and water level changes. Moreover, the entire dredging operation system of the present invention adopts the construction method of the combination of the driving platform system and the sweeping system, the hull body and the connected stern box remain stationary during the construction process, and the driving platform system and the sweeping system move, and in order to match the hull The center of gravity changes to maintain the stability of the hull, and the hull balance system is also designed.

It should be noted that the above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. The technical features or combinations of technical features described in the embodiments of the present utility model should not be considered as are isolated, they can be combined with each other to achieve better technical effects, and the technologies, methods and devices known to those of ordinary skill in the relevant fields will not be discussed in detail, but under appropriate circumstances, the technologies, methods and devices should be considered as part of the authorization statement. In all examples shown and discussed herein, any specific value should be construed as illustrative only and not as limiting. Accordingly, other examples of exemplary embodiments may have different values. Any simple modifications made to the above embodiments according to the technical essence of the present invention, equivalent changes and modifications, all belong to the scope of the technical solutions of the present invention.

Claims (9)

1. The utility model provides a pier below dredging operation system which characterized in that: the device comprises a hull body (1), a tail connection box (2), a travelling platform system (3), a dredging equipment system (4), a winch hoisting system (5), a cross sweeping system, a hull balancing system (7) and a hull positioning system (8);

the ship body (1) adopts a simplified open type square ship structure design, a ship body positioning system (8) is arranged on the ship body and used for positioning the ship body on a high pile below a wharf, a plurality of sequentially parallel tail connecting boxes (2) are arranged at the stern position of the ship body and used for meeting the size requirements of different wharf dredging, a first travelling crane track (9) is arranged above the ship body, and a second travelling crane track (10) is arranged below the ship body; the tail connecting box (2) is designed by adopting a floating box type structure, a first travelling crane track (9) is arranged above the tail connecting box, a second travelling crane track (10) is arranged below the tail connecting box, and the two travelling crane tracks are respectively and directly connected with the first travelling crane track (9) and the second travelling crane track (10) on the ship body (1); the ship body balance system (7) is movably arranged on the second travelling crane track (10) and is used for adjusting the balance of the ship body in the dredging process; the travelling platform system (3) is movably arranged on the first travelling track (9) through a trolley pulley system (13);

the winch hoisting system (5) and the sweeping system are both arranged on the travelling platform system (3); the dredging equipment system (4) is respectively connected with the winch hoisting system (5) and the transverse sweeping system, the lower part and the recovery of the dredging equipment system (4) are controlled by the winch hoisting system (5), and the left and right transverse sweeping of the dredging equipment system (4) in the dredging process is controlled by the transverse sweeping system.

2. The undersubrf dredging operation system according to claim 1, wherein: the ship body (1) is further provided with a ballast water tank (11) and a ballast water pump (12), the ballast water tank (11) is connected with the ballast water pump (12), and ballast water in the ballast water tank (11) is pumped through the ballast water pump (12).

3. The wharf below dredging operation system according to any one of claims 1 or 2, wherein: the dredging equipment system (4) adopts an integrated structural design, integrates the dredge pump system (15) and the reamer system (16) into a whole, and adopts an arrangement mode that the reamer system (16) and the dredge pump system (15) are closely connected in the front and back.

4. The undersubrf dredging operation system according to claim 3, wherein: the dredging apparatus system (4) comprises a cantilevered and a suspended type.

5. The undersubrf dredging operation system according to claim 4, wherein: the winch hoisting system (5) comprises a hoisting motor (22), a steel wire rope (23) and a winch (24);

for the cantilever type dredging equipment system (4), a flange plate is directly adopted to be connected with a mud conveying pipeline (14), a fixed lantern ring (18) is arranged on the mud conveying pipeline (14), the winch (24) is connected with the fixed lantern ring (18) through a steel wire rope (23), the hoisting motor (22) is connected with the winch (24) through a clamping belt, and the lowering and the recovery of the cantilever type dredging equipment system (4) in the dredging process are controlled;

for the suspended dredging equipment system (4), the tail end of the suspended dredging equipment system is directly connected with a winch (24) through a steel wire rope (23), and the hoisting motor (22) is connected with the winch (24) by a clamping belt to control the descending and the recovering of the suspended dredging equipment system (4).

6. The undersubrf dredging operation system according to claim 4, wherein: the sweeping system is a rotating system (6) comprising a rotating gear train (25) and a gear train drive motor (26);

the cantilever type dredging equipment system (4) is directly connected with the mud conveying pipeline (14) through a flange plate, a cylindrical support (21) is arranged on the mud conveying pipeline (14), the rotating gear train (25) is connected with the mud conveying pipeline (14) through the cylindrical support (21), the gear train driving motor (26) is connected with the rotating gear train (25), and the cantilever type dredging equipment system (4) and the mud conveying pipeline (14) thereof are controlled to carry out left-right transverse sweeping construction in the dredging process.

7. The undersubrf dredging operation system according to claim 4, wherein: the transverse sweeping system comprises a pulley system (19), a cross beam (17) and a steel bracket (20);

the cross beam (17) is connected with the travelling crane platform system (3) through a steel bracket (20); the pulley system (19) is embedded in the cross beam (17) and connected with the tail end of the suspended dredging equipment system (4), and the dredging equipment system (4) is controlled to carry out left-right transverse-sweeping dredging construction.

8. The wharf below dredging operation system according to any one of claims 1 or 2, wherein: the hull balance system (7) comprises a counterweight pulley system (27), a counterweight driving motor (28) and a counterweight block body (29);

the counterweight block (29) is suspended on the second running rail (10) through a counterweight pulley system (27); the counterweight pulley system (27) is connected with a counterweight driving motor (28), and the counterweight pulley system (27) is controlled by the counterweight driving motor (28) to drive the movement of the ship body balancing system (7), so that the counterweight pulley system is used for adjusting the balance of the ship body in the dredging process.

9. The wharf below dredging operation system according to any one of claims 1 or 2, wherein: the ship body positioning system (8) comprises a mechanical arm (30), a mechanical gripper (31) and a driving motor (32);

the mechanical gripper (31) is arranged at the front end of the mechanical arm (30); and the driving motor (32) is respectively connected with the mechanical arm (30) and the mechanical gripper (31) and drives the mechanical arm (30) and the mechanical gripper (31) to position the ship body on the high pile below the wharf.

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