Dredging device below wharf and dredging method thereof

Abstract

The invention discloses a desilting device below a wharf and a desilting method thereof, and relates to the technical field of wharf desilting, the desilting device comprises an electric track, a moving table is mounted on one side of the electric track, connecting rods are fixedly connected to the four corners of the bottom of the moving table, and a sealing box is fixedly connected to the bottom end of each connecting rod; the bottom of the closed box is fixedly connected with a desilting cover, the two sides of the desilting cover are both fixedly connected with crushing assemblies, one side of the top of the moving table is fixedly connected with a silt pumping part, and when silt is pumped, an internal structure of the driving part drives the crushing assemblies through operation of the driving part; according to the dredging device, the crushing assembly is arranged, so that internal components of the crushing assembly operate, sludge around the filtering cover is stirred, mixed and scattered, cakes and impurities in the sludge are crushed, the possibility that the cakes and the impurities in the sludge enter the sludge pumping part is reduced, the possibility that blockage occurs during sludge pumping is reduced, and the dredging efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of dock dredging, and in particular to a dredging device and a dredging method under a dock. Background Art

[0002] A pier, also known as a ferry terminal, is a long embankment extending from the shore into the water, or it may just be a row of stairs extending from the shore into the water. Most of them are man-made civil engineering structures, but they may also be naturally formed. They are generally used at the seaside or riverside for ships or ferries to dock, for passengers to get on and off, and for cargo to be loaded and unloaded. They are usually found in commercial cities with developed water and land transportation. Humans use piers as a place for ferries to dock and pick up passengers and cargo, and secondly, they may be landmarks to attract tourists and gather for appointments.

[0003] After the construction of the wharf, the pile group in the pile foundation weakens the water flow, causing silt accumulation in the pile foundation, which seriously affects the stability of the pile foundation wharf structure. Due to untimely dredging of some wharves, the silt pushes the pile foundation, causing large displacement or even broken piles, which leads to the inability to operate the wharf normally. Therefore, it is necessary to dredge the bottom of the wharf in time, and when dredging the bottom of the wharf, it is often necessary to use dredging equipment to dredge the bottom of the wharf.

[0004] Most of the existing dredging devices first connect a silt extraction pipe and a silt extraction pump, then insert the silt extraction pipe into the silt under the dock, and then use the silt extraction pump to extract the silt and pump it to the stacking place to dredge the silt under the dock. However, there are lumps and debris in the silt under the dock. If they are not processed, when the silt is extracted, it is easy to form a blockage inside the pipe, which will affect the extraction of the silt and is not conducive to the development of dredging work. Summary of the invention

[0005] The purpose of the present application is to solve the problem that there are lumps and debris in the sludge under the dock raised in the above-mentioned background technology. If they are not treated, blockages may easily form inside the pipeline when the sludge is extracted, thereby affecting the extraction of the sludge and hindering the dredging work. The present application provides a dredging device under the dock and a dredging method thereof.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A dredging device under a dock comprises an electric track, a movable platform is installed on one side of the electric track, four corners of the bottom of the movable platform are fixedly connected with connecting rods, the bottom end of the connecting rods is fixedly connected with a closing box, the bottom of the closing box is fixedly connected with a dredging cover, both sides of the dredging cover are fixedly connected with crushing assemblies, a silt extraction member is fixedly connected to one side of the top of the movable platform, a filter cover is fixedly connected to the inside of the dredging cover, the mud extraction end of the silt extraction member is located inside the filter cover, a brush assembly is installed inside the dredging cover, a driving member is installed on the movable platform, the output end of the driving member is transmission-connected with the crushing assembly, the crushing assembly is transmission-connected with the brush assembly, a water injection member is fixedly connected to one side of the top of the movable platform, and the water outlet ends of the water injection member are located on both sides of the dredging cover.

[0007] By adopting the above technical solution, when the sludge is extracted, the internal structure of the driving member drives the crushing assembly through the operation of the driving member, so that the internal components of the crushing assembly operate, thereby mixing and breaking up the sludge around the filter cover, breaking up the lumps and debris in the sludge, and reducing the possibility of lumps and debris in the sludge entering the sludge extraction member, thereby reducing the possibility of blockage during sludge extraction and improving the dredging efficiency.

[0008] Furthermore, the silt extraction component includes a silt extraction pump fixedly connected to one side of the top of the mobile platform, the mud extraction end of the silt extraction pump is fixedly connected to a conveying hose, one end of the conveying hose is fixedly connected to a silt extraction pipe, the mud discharge end of the silt extraction pump is fixedly connected to a silt discharge pipe, and the silt extraction pipe is located inside the filter cover.

[0009] By adopting the above technical solution, the sludge in the filter cover can be extracted through the sludge extraction pipe under the operation of the sludge extraction pump.

[0010] Furthermore, the driving member includes a driving motor fixedly connected to the top of the moving platform, an output end of the driving motor is fixedly connected to a rotating shaft, and one end of the rotating shaft is fixedly connected to a driving disk.

[0011] By adopting the above technical solution, the driving motor drives the driving disc to rotate, thereby driving the crushing assembly.

[0012] Furthermore, the crushing assembly includes a sludge cover fixedly connected to one side of the dredging cover, the interior of the sludge cover is rotatably connected with mutually symmetrical crushing rollers, the top of the crushing roller is fixedly connected with a linkage disk, the two linkage disks are connected through a transmission belt, and the linkage disk on one side is connected to the driving disk through a driving belt.

[0013] By adopting the above technical solution, the two crushing rollers are rotated to stir and break up the sludge.

[0014] Furthermore, the brush cleaning assembly includes a two-way threaded rod rotatably connected to one side of the interior of the dredging cover, the top of the two-way threaded rod is fixedly connected to a connecting plate, the inner side of the dredging cover is fixedly connected to a guide rod, the bottom ends of the two-way threaded rod and the guide rod are fixedly connected to a limiting plate, a brush is threadedly connected to the two-way threaded rod, and the connecting plate is connected to a linkage plate on one side through a transmission belt.

[0015] By adopting the above technical solution, the brush element can be driven by rotating the bidirectional threaded rod, thereby cleaning the filter cover.

[0016] Furthermore, the brush member comprises an annular plate threadedly connected to the bidirectional threaded rod, a brush plate is fixedly connected to the inner side of the annular plate, and one end of the annular plate is connected to the guide rod through.

[0017] By adopting the above technical solution, the filter cover can be cleaned by the brush plate.

[0018] Furthermore, the water injection component includes a water pump fixedly connected to the top of the mobile platform, the water pumping end of the water pump is fixedly connected to a water pumping pipe, the water outlet end of the water pump is connected to a water distribution pipe, both ends of the water distribution pipe are fixedly connected to a corrugated hose, the end of the corrugated hose away from the water distribution pipe is fixedly connected to a diversion pipe, both ends of the diversion pipe are fixedly connected to a connecting pipe, a plurality of nozzles are fixedly connected to the connecting pipe, and the water outlet end of the nozzle is located on the inner side of the dredging hood.

[0019] By adopting the above technical solution, external water can be extracted through the operation of the water pump, and then the water can be pumped into the dredging cover.

[0020] A method for dredging below a dock, the method being as follows: S1: First, the electric track passes through the edge of the fixed dock, and then the mobile platform is installed on the inner side of the electric track. At this time, the dredging cover and crushing assembly are inserted into the bottom silt layer; S2: Turn on the driving part, and drive the crushing assembly through the operation of the driving part, stir the surrounding sludge through the internal components of the crushing assembly, and crush the sludge, break up the lumps and debris in the sludge, and the crushed sludge enters the filter cover; S3: Then, the water injection part is opened, and the external water source is extracted through the water injection part, and water is sprayed around the filter cover through the water spray end of the water injection part to dilute the viscosity of the sludge; S4: While the crushing component is running, the cleaning brush component is driven to run, and the filter cover is cleaned by the cleaning brush component to remove small pieces of debris stuck on the filter cover, so as to ensure the sludge flow of the filter cover; S5: Turn on the silt pumping device, and through the operation of the silt pumping device, the silt is pumped out from the bottom of the water, and the silt is discharged to the silt storage area on the dock, so as to carry out dredging.

[0021] In summary, the present application includes at least one of the following beneficial effects: 1. In the present application, when the sludge is extracted, the internal structure of the driving member drives the crushing assembly through the operation of the driving member, so that the internal components of the crushing assembly operate, thereby mixing and breaking up the sludge around the filter cover, breaking up the lumps and debris in the sludge, and reducing the possibility of lumps and debris in the sludge entering the sludge extraction member, thereby reducing the possibility of blockage during sludge extraction and improving the dredging efficiency.

[0022] 2. In the present application, while the internal components of the crushing assembly are in operation, the cleaning and brushing assembly can be driven to operate the internal components of the cleaning and brushing assembly, thereby cleaning the filter cover, brushing off the debris and small lumps adhering to the surface of the filter cover, thereby improving the smoothness of sludge extraction and thus improving the sludge cleaning efficiency.

[0023] 3. In the present application, when the silt extraction component is extracting silt, the water injection component is operated so that the internal structure of the water injection component extracts external water into the silt removal cover. After the water enters the silt removal cover, it is mixed with the silt by the stirring of the crushing component, and then the silt is diluted, thereby reducing the viscosity of the silt, thereby improving the silt extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present application; Figure 2 It is a schematic diagram of the structure of the dredging cover and the cleaning brush assembly in the present application; Figure 3 It is a schematic diagram of the structure of the silt extraction component in this application; Figure 4 It is a schematic diagram of the structure of the crushing component in this application; Figure 5 It is a structural connection diagram of the crushing assembly and the driving member in this application; Figure 6 It is a schematic diagram of the water injection component structure in this application.

[0025] Description of reference numerals: 1. Electric track; 2. Moving platform; 3. Sludge extraction component; 4. Connecting rod; 5. Closing box; 6. Sludge removal cover; 7. Crushing assembly; 8. Driving component; 9. Water injection component; 10. Brush cleaning assembly; 31. Sludge extraction pump; 32. Delivery hose; 33. Sludge extraction pipe; 34. Sludge removal pipe; 61. Filter cover; 71. Sludge cover; 72. Crushing roller; 73. Linkage disk; 74. Transmission belt 1; 75. Transmission belt 2; 81. Driving motor; 82. Rotating shaft; 83. Driving disk; 84. Driving belt; 91. Water pump; 92. Water distribution pipe; 93. Corrugated hose; 94. Diversion pipe; 95. Connecting pipe; 96. Nozzle; 97. Water extraction pipe; 101. Bidirectional threaded rod; 102. Connecting disk; 103. Guide rod; 104. Ring plate; 105. Brush plate; 106. Limit plate. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 —6 Provide further details of this application.

[0027] The embodiments of the present application disclose a dredging device and a dredging method under a dock.

[0028] Reference Figure 1 and Figure 2 A dredging device under a dock comprises an electric track 1, a moving platform 2 is installed on one side of the electric track 1, four corners of the bottom of the moving platform 2 are fixedly connected with connecting rods 4, the bottom end of the connecting rod 4 is fixedly connected with a closing box 5, the bottom of the closing box 5 is fixedly connected with a dredging cover 6, both sides of the dredging cover 6 are fixedly connected with crushing components 7, a silt extractor 3 is fixedly connected to one side of the top of the moving platform 2, a filter cover 61 is fixedly connected inside the dredging cover 6, the mud extracting end of the silt extractor 3 is located inside the filter cover 61, a brushing component 10 is installed inside the dredging cover 6, a driving component 8 is installed on the moving platform 2, the output end of the driving component 8 is transmission-connected to the crushing component 7, the crushing component 7 is transmission-connected to the brushing component 10, a water injection component 9 is fixedly connected to one side of the top of the moving platform 2, and the water outlet ends of the water injection component 9 are located on both sides of the dredging cover 6.

[0029] When the silt under the dock is to be desilted, the electric track 1 is first fixed to the edge of the dock, and the desilting cover 6 and the crushing assembly 7 are inserted into the underwater silt. Then, under the operation of the driving member 8, the internal structure of the driving member 8 is driven, and then the crushing assembly 7 is driven, so that the internal components of the crushing assembly 7 are operated, so as to stir and break up the silt around the desilting cover 6, and break up the lumps and debris in the silt. After being broken, the silt can naturally enter the desilting cover 6 and enter the filter cover 61, and the filter cover 61 can be used to filter the silt. The sludge is screened for the second time to filter and block the unbroken lumps and debris in the sludge, so as to prevent the lumps and debris from entering the sludge extraction part 3 and causing blockage therein. After that, the sludge extraction part 3 is operated so that the internal components of the sludge extraction part 3 extract the sludge inside the filter cover 61, and then the sludge is extracted to the sludge storage area at the dock, so as to desilt the sludge. When moving, the mobile platform 2 can be driven by the operation of the electric track 1, thereby driving the crushing assembly 7 and the dredging cover 6 to move horizontally, so as to move and clean the sludge under the dock.

[0030] When the crushing component 7 stirs and breaks up the sludge, the cleaning and brushing component 10 can be driven to make the internal components of the cleaning and brushing component 10 operate, and then the filter cover 61 can be cleaned, and the sludge lumps and debris adhering to the filter cover 61 can be cleaned, thereby reducing the possibility of clogging of the filter cover 61, improving the flowability of the sludge, and thus improving the dredging effect.

[0031] When the crushing component 7 stirs and breaks up the silt, at this time, under the operation of the water injection part 9, the external water can be pumped into the dredging cover 6 along the internal structure, and then sprayed into the silt inside the dredging cover 6, and then cooperate with the operation of the crushing component 7 to dilute the silt and reduce the viscosity of the silt, thereby improving the silt extraction efficiency.

[0032] Reference Figure 3 The silt extraction component 3 includes a silt extraction pump 31 fixedly connected to one side of the top of the mobile platform 2, the mud extraction end of the silt extraction pump 31 is fixedly connected to a conveying hose 32, one end of the conveying hose 32 is fixedly connected to a silt extraction pipe 33, the mud discharge end of the silt extraction pump 31 is fixedly connected to a silt discharge pipe 34, and the silt extraction pipe 33 is located inside the filter cover 61.

[0033] When the silt extraction pump 31 is in operation, the silt in the filter cover 61 can be extracted through the silt extraction pipe 33, and then the silt can be pumped into the conveying hose 32, and the silt can be pumped to the silt storage area at the dock through the silt extraction pump 31, so as to desilt the silt.

[0034] Reference Figure 4 and Figure 5The driving member 8 includes a driving motor 81 fixedly connected to the top of the mobile platform 2, the output end of the driving motor 81 is fixedly connected to a rotating shaft 82, one end of the rotating shaft 82 is fixedly connected to a driving disk 83, the crushing assembly 7 includes a sludge cover 71 fixedly connected to one side of the dredging cover 6, the interior of the sludge cover 71 is rotatably connected to mutually symmetrical crushing rollers 72, the top of the crushing roller 72 is fixedly connected to a linkage disk 73, the two linkage disks 73 are connected by a transmission belt 74, and one side of the linkage disk 73 is connected to the driving disk 83 by a driving belt 84.

[0035] When the driving motor 81 is running, the rotating shaft 82 can be driven to rotate, and the rotating rotating shaft 82 can drive the driving disk 83 to rotate. When the driving disk 83 rotates, it can drive the linkage disk 73 on one side through the driving belt 84 to rotate. When the linkage disk 73 on one side rotates, it can drive the other linkage disk 73 to rotate through the transmission belt 74, and then drive the two crushing rollers 72 to rotate, so as to stir and break up the sludge, and then crush the lumps and debris in the sludge.

[0036] Reference Figure 2 The brush cleaning assembly 10 includes a bidirectional threaded rod 101 rotatably connected to one side of the interior of the dredging cover 6, a connecting plate 102 is fixedly connected to the top of the bidirectional threaded rod 101, a guide rod 103 is fixedly connected to one side of the interior of the dredging cover 6, the bottom ends of the bidirectional threaded rod 101 and the guide rod 103 are fixedly connected to a limiting plate 106, a brush is threadedly connected to the bidirectional threaded rod 101, the connecting plate 102 is connected to a linkage plate 73 on one side through a transmission belt 75, the brush includes an annular plate 104 threadedly connected to the bidirectional threaded rod 101, a brush plate 105 is fixedly connected to the inner side of the annular plate 104, and one end of the annular plate 104 is connected through the guide rod 103.

[0037] When the linkage disk 73 rotates, the connecting disk 102 can be driven by the transmission belt 2 75 to make the connecting disk 102 rotate. The rotating connecting disk 102 drives the bidirectional threaded rod 101 to rotate, and then drives the annular plate 104, so that the annular plate 104 reciprocates on the bidirectional threaded rod 101, and then drives the brush plate 105 to move. The filter cover 61 is cleaned by the moving brush plate 105, and the sludge lumps and debris adhered to the filter cover 61 are brushed off. Here, when the annular plate 104 moves, the movement of the annular plate 104 can be limited and guided by the guide rod 103 to prevent the annular plate 104 from offsetting during movement.

[0038] Reference Figure 6The water injection component 9 includes a water pump 91 fixedly connected to the top of the mobile platform 2, the water pumping end of the water pump 91 is fixedly connected to a water pumping pipe 97, the water outlet end of the water pump 91 is connected to a water distribution pipe 92, both ends of the water distribution pipe 92 are fixedly connected to a corrugated hose 93, one end of the corrugated hose 93 away from the water distribution pipe 92 is fixedly connected to a diversion pipe 94, both ends of the diversion pipe 94 are fixedly connected to a connecting pipe 95, and a plurality of nozzles 96 are fixedly connected to the connecting pipe 95, and the water outlet end of the nozzle 96 is located on the inner side of the dredging cover 6.

[0039] The pumping pipe 97 is connected to an external water source. After the connection, the water pump 91 is operated so that the water pump 91 draws water from the water source through the pumping pipe 97, and then transports the water to the water distribution pipe 92, and then transports the water to the corrugated hose 93. The corrugated hose 93 then transports the water to the diversion pipe 94 and the connecting pipe 95, and sprays the water into the dredging hood 6 through multiple nozzles 96, thereby diluting the sludge.

[0040] A method for dredging below a dock, the method being as follows: S1: First, the electric track 1 passes through the edge of the fixed dock, and then the mobile platform 2 is installed inside the electric track 1. At this time, the dredging cover 6 and the crushing assembly 7 are inserted into the bottom silt layer; S2: Turn on the driving member 8, and drive the crushing assembly 7 through the operation of the driving member 8, so that the surrounding sludge is stirred by the internal components of the crushing assembly 7, and the sludge is crushed and dispersed, and the lumps and debris in the sludge are crushed, and the crushed sludge enters the filter cover 61; S3: Then, the water injection part 9 is opened, and the external water source is extracted through the water injection part 9, and water is sprayed around the filter cover 61 through the water spray end of the water injection part 9 to dilute the viscosity of the sludge; S4: while the crushing assembly 7 is running, the cleaning and brushing assembly 10 is driven to run, and the filter cover 61 is cleaned by the cleaning and brushing assembly 10 to remove small pieces of debris stuck on the filter cover 61, thereby ensuring the sludge flow of the filter cover 61; S5: Open the silt pumping device 3, and through the operation of the silt pumping device 3, the silt is pumped out from the bottom of the water, and the silt is discharged to the silt storage area on the dock, so as to perform silt removal.

[0041] Working principle: When the silt under the dock is to be desilted, the electric track 1 is first fixed to the edge of the dock, and the desilting cover 6 and the crushing assembly 7 are inserted into the underwater silt. Then, under the operation of the driving motor 81, the rotating shaft 82 can be driven to rotate, and the rotating shaft 82 can drive the driving disc 83 to rotate. When the driving disc 83 rotates, it can drive the linkage disc 73 on one side through the driving belt 84 to rotate. When the linkage disc 73 on one side rotates, it can drive the other linkage disc 73 to rotate through the transmission belt 1 74, thereby driving the two crushing rollers 72 to rotate, so as to achieve the desired effect. This stirs and breaks up the silt around the dredging hood 6, and breaks up the lumps and debris in the silt. After being broken, the silt can naturally enter the dredging hood 6 and enter the filter hood 61. The silt can be screened for a second time through the filter hood 61, and the unbroken lumps and debris in the silt are filtered and blocked, so as to prevent the lumps and debris from entering the silt extraction part 3 and causing blockage therein. Afterwards, under the operation of the silt extraction pump 31, the silt in the filter hood 61 can be extracted through the silt extraction pipe 33, and then the silt can be pumped into the conveying hose 32, and the silt can be pumped to the silt stacking place at the dock through the silt extraction pump 31, so as to perform dredging on the silt.

[0042] When the crushing component 7 stirs and breaks up the sludge, the connecting plate 102 can be driven by the transmission belt 2 75 to rotate the connecting plate 102, and the rotating connecting plate 102 drives the bidirectional threaded rod 101 to rotate, thereby driving the annular plate 104, so that the annular plate 104 reciprocates on the bidirectional threaded rod 101, thereby driving the brush plate 105 to move, and the filter cover 61 is cleaned by the moving brush plate 105, and the sludge lumps and debris adhered to the filter cover 61 are brushed off, thereby reducing the possibility of blockage of the filter cover 61, improving the flow of sludge, and thus improving the dredging effect.

[0043] When the crushing component 7 stirs and breaks up the sludge, at this time, the operation of the water pump 91 causes the water pump 91 to extract water from the water source through the pumping pipe 97, and then transport the water to the water distribution pipe 92, and then transport it to the corrugated hose 93, and then the corrugated hose 93 transports the water to the diversion pipe 94 and the connecting pipe 95, and the water is sprayed into the dredging hood 6 through multiple nozzles 96, and then cooperates with the operation of the crushing component 7 to dilute the sludge and reduce the viscosity of the sludge, thereby improving the silt extraction efficiency.

Claims

1. A desilting device under a dock, comprising an electric track (1), characterized in that: A moving platform (2) is installed on one side of the electric track (1); four corners of the bottom of the moving platform (2) are fixedly connected to connecting rods (4); the bottom end of the connecting rod (4) is fixedly connected to a closing box (5); the bottom of the closing box (5) is fixedly connected to a dredging cover (6); both sides of the dredging cover (6) are fixedly connected to crushing assemblies (7); a silt extraction member (3) is fixedly connected to one side of the top of the moving platform (2); a filter cover (61) is fixedly connected inside the dredging cover (6); a silt extraction end of the silt extraction member (3) is located inside the filter cover (61); a brush cleaning assembly (10) is installed inside the dredging cover (6); a driving member (8) is installed on the moving platform (2); an output end of the driving member (8) is transmission-connected to the crushing assembly (7); the crushing assembly (7) is transmission-connected to the brush cleaning assembly (10); a water injection member (9) is fixedly connected to one side of the top of the moving platform (2); water outlet ends of the water injection member (9) are located on both sides of the dredging cover (6).

2. The dredging device under the dock according to claim 1, characterized in that: The silt extraction member (3) comprises a silt extraction pump (31) fixedly connected to one side of the top of the mobile platform (2); a mud extraction end of the silt extraction pump (31) is fixedly connected to a conveying hose (32); one end of the conveying hose (32) is fixedly connected to a silt extraction pipe (33); a mud discharge end of the silt extraction pump (31) is fixedly connected to a silt discharge pipe (34); and the silt extraction pipe (33) is located inside the filter cover (61).

3. The desilting device under a dock according to claim 1, characterized in that: The driving member (8) comprises a driving motor (81) fixedly connected to the top of the moving platform (2), the output end of the driving motor (81) being fixedly connected to a rotating shaft (82), and one end of the rotating shaft (82) being fixedly connected to a driving disk (83).

4. The desilting device under the dock according to claim 3, characterized in that: The crushing assembly (7) comprises a sludge cover (71) fixedly connected to one side of the silt cleaning cover (6); the sludge cover (71) is internally rotatably connected to mutually symmetrical crushing rollers (72); the top ends of the crushing rollers (72) are fixedly connected to linkage disks (73); the two linkage disks (73) are transmission-connected via a transmission belt (74); and the linkage disk (73) on one side is transmission-connected to a driving disk (83) via a driving belt (84).

5. The desilting device under the dock according to claim 4, characterized in that: The brush cleaning assembly (10) comprises a bidirectional threaded rod (101) rotatably connected to one side of an interior of a dredging cover (6); a connecting plate (102) is fixedly connected to the top end of the bidirectional threaded rod (101); a guide rod (103) is fixedly connected to one side of the interior of the dredging cover (6); the bottom ends of the bidirectional threaded rod (101) and the guide rod (103) are both fixedly connected to a limiting plate (106); a brush is threadedly connected to the bidirectional threaded rod (101); and the connecting plate (102) is transmission-connected to a linkage plate (73) on one side via a second transmission belt (75).

6. The desilting device under the dock according to claim 5, characterized in that: The brush element comprises an annular plate (104) threadedly connected to a bidirectional threaded rod (101), a brush plate (105) being fixedly connected to the inner side of the annular plate (104), and one end of the annular plate (104) being connected through the guide rod (103).

7. The desilting device under a dock according to claim 1, characterized in that: The water injection member (9) comprises a water pump (91) fixedly connected to the top of the mobile platform (2); a water pumping end of the water pump (91) is fixedly connected to a water pumping pipe (97); a water outlet end of the water pump (91) is connected to a water distribution pipe (92); both ends of the water distribution pipe (92) are fixedly connected to a corrugated hose (93); one end of the corrugated hose (93) away from the water distribution pipe (92) is fixedly connected to a flow distribution pipe (94); both ends of the flow distribution pipe (94) are fixedly connected to a connecting pipe (95); a plurality of nozzles (96) are fixedly connected to the connecting pipe (95); and the water outlet ends of the nozzles (96) are located on the inner side of the dredging cover (6).

8. A method for dredging below a dock, characterized in that: The connection method is applicable to the dredging device under the dock according to any one of claims 1 to 7, and the connection method is as follows: S1: First, the electric track (1) passes through the edge of the fixed dock, and then the mobile platform (2) is installed on the inner side of the electric track (1). At this time, the dredging cover (6) and the crushing assembly (7) are inserted into the bottom mud layer; S2: opening the driving member (8), and driving the crushing assembly (7) through the operation of the driving member (8), stirring the surrounding sludge through the internal components of the crushing assembly (7), and crushing and dispersing the sludge, breaking up lumps and debris in the sludge, and the crushed sludge enters the filter cover (61); S3: then opening the water injection member (9), extracting water from an external source through the water injection member (9), and spraying water around the filter cover (61) through the water spray end of the water injection member (9) to dilute the viscosity of the sludge; S4: while the crushing component (7) is in operation, the cleaning and brushing component (10) is driven to operate, and the cleaning and brushing component (10) is used to clean the filter cover (61), thereby removing small pieces of debris adhering to the filter cover (61), thereby ensuring the flow of sludge in the filter cover (61); S5: Open the silt extraction element (3), and through the operation of the silt extraction element (3), extract the silt from the bottom of the water and discharge the silt to the silt storage area on the dock, thereby performing silt removal.

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