River channel cleaning and dredging ship

By designing a river cleaning and dredging ship with a mud-shoveling structure, a lifting structure and sensors, the problem of incomplete riverbed cleaning was solved, the riverbed was made smooth and unobstructed, the water flow was accelerated, and the cleaning efficiency was improved.

CN120649523AInactive Publication Date: 2025-09-16WENZHOU LONGHAI WATER CONSERVANCY CONSTR GRP CO LTD
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Patent Information

Application Number
CN202510953669.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-11
Publication Date
2025-09-16
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing dredging methods are difficult to maintain the thoroughness and flatness of the riverbed cleaning, resulting in poor water flow acceleration effect and difficult operation.

Method used

A river channel clearing and dredging vessel has been designed, which adopts a combination of shoveling structure, lifting structure, removal structure and downward pressure structure. Through specific angle design and angle sensor, it can achieve precise cutting and lateral separation of silt, avoiding restricted field of view and silt accumulation.

Benefits of technology

It achieves a smooth and unobstructed riverbed, increases water flow rate, operates accurately and efficiently, avoids silt blockage, and improves the cleaning effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The river channel cleaning and dredging ship comprises a ship body, a lifting structure is arranged on one side of the ship body, a mud shoveling structure is rotationally connected to the bottom end of the lifting structure, the mud shoveling structure rotates along the bottom end of the lifting structure and forms an included angle with the advancing direction of the ship body, the mud shoveling structure extends backwards, and a removing structure is connected to the upper portion of the extending end in a lifting mode. The removing structure is hollow and hoisted on the ship body, an opening capable of sliding backwards to be opened is formed in the bottom surface, and an opening is formed in the top end of the removing structure; a downward pressing structure which sleeves the mud shoveling structure and is connected to the mud shoveling structure in a lifting mode is fixed to the removing structure, the top end of the downward pressing structure is rotationally connected with a butt joint structure in the rotating direction of the mud shoveling structure, the butt joint structure extends upwards and is connected to the top end of the lifting structure in an elastic lifting mode, and the top end of the butt joint structure is gradually thinned upwards; and the pressing structure is sleeved by the top end of the butt joint structure and slides. The device has the effects that linear dredging is kept, the bottom of a cleaned riverbed is smooth, the water flow speed is increased, and sludge accumulation is effectively improved.
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Description

Technical Field

[0001] The present application relates to the field of river dredging technology, and in particular to a river cleaning and dredging vessel. Background Art

[0002] With the construction of various water conservancy projects, the flow rate of the downstream river has slowed down, resulting in a large amount of silt deposition, causing the riverbed to rise continuously year by year. During the flood season, residents on both sides of the river are faced with the threat of floods. Therefore, it is necessary to clear the silt at the bottom of the river to ensure the smooth flow of the river.

[0003] The existing dredging method usually uses a ship-mounted excavator to excavate the bottom of the river channel. However, since most of the river water is extremely turbid, it is difficult for the operator to find the right position next to the previous position after digging a bucket. This will result in incomplete and uneven riverbed cleaning, and poor water flow acceleration effect. Regarding the above-mentioned related technologies, the applicant believes that if the dredging can be maintained in a straight line, the bottom of the riverbed after cleaning can be made smooth and unobstructed, the water flow rate can be increased, and the problem of silt accumulation can be effectively improved. Summary of the Invention

[0004] In order to maintain straight-line dredging, make the bottom of the riverbed smooth and unobstructed after cleaning, increase the water flow rate, and effectively improve silt accumulation, the present application provides a river cleaning and dredging boat.

[0005] The river cleaning and dredging boat provided in this application adopts the following technical solution: A river channel clearing and dredging boat includes a hull, a lifting structure is provided on one side of the hull, the bottom end of the lifting structure is rotatably connected to a horizontally extending mud shoveling structure, the mud shoveling structure rotates along the bottom end of the lifting structure to form an angle with the forward direction of the hull, the mud shoveling structure extends backward, and the upper part of the extended end is lifted and connected to a corresponding removal structure, the removal structure is hollow and vertically hoisted to the hull, and the bottom surface is provided with an opening that can be slid backward to open, and the top of the removal structure is provided with a backward opening for water to flow through; a downward pressure structure is fixed on the removal structure and is sleeved and lifted and connected to the mud shoveling structure, the top of the downward pressure structure is rotatably connected to a docking structure along the rotation direction of the mud shoveling structure, the docking structure extends upward and is elastically lifted and connected to the top of the lifting structure, and the top of the docking structure gradually becomes thinner upward, and the downward pressure structure is sleeved and slides by the top of the docking structure.

[0006] By adopting the above technical solution, the shoveling structure is designed with a specific angle set along the forward direction of the hull, which can more effectively cut and insert riverbed sediments during movement. The lifting structure not only enables the shoveling structure to adjust the operating depth according to the actual situation of the river channel, but also enables the entire system to have good terrain adaptability. The hollow structure is removed and a sliding opening is provided to separate the silt separated from the bottom laterally, so that the incision is smooth and continuous. The combination of the downward pressure structure and the docking structure makes the lifting and installation of the separation structure simple, avoiding the problem of limited vision.

[0007] Preferably, the lifting structure includes a lifting bracket and an elevator, the lifting bracket is connected to the side wall of the hull in a lifting manner, and the lifting bracket extends vertically; the elevator is fixed to the hull and engaged with the lifting bracket.

[0008] Preferably, the mud shoveling structure includes an extension column, a flat shovel plate and a rotating support rod. The extension column is rotatably connected to the bottom end of the lifting bracket and extends downward, and the narrow surface of the extension column is forward and smoothly arranged; the flat shovel plate extends horizontally and is fixed to the bottom end of the extension column, the front end of the flat shovel plate is smoothly arranged, and the flat shovel plate extends backward and is staggered with the extension column; one end of the rotating support rod is rotatably connected to the lifting bracket, and the other end is rotatably connected to the extension rod, and the two ends are hydraulically connected.

[0009] Preferably, the rotating end sleeve of the extension column is provided with an upwardly extending mud shield.

[0010] Preferably, the removal structure includes a collection box, a switch cover and a driving cylinder. The top of the collection box is hoisted and connected to the side wall of the hull, and is arranged above the rearward extension end of the flat shovel plate, and the bottom of the collection box is open; the switch cover is slidably connected to the end face of the open end of the collection box, and the switch cover slides toward the side away from the extension column, and the side of the switch cover close to the extension column can be inserted into the side wall of the collection box; the driving cylinders are respectively fixed to the collection boxes, and the movable ends of the driving cylinders are fixed to the switch cover, and extend and retract along the sliding direction of the switch cover.

[0011] By adopting the above technical solution, the switch cover is designed to be slidable and slides open on the side away from the extension column. This design helps to form a smooth channel when discharging sludge, avoiding blockage problems caused by sludge accumulation.

[0012] Preferably, angle sensors rotating along the front and rear ends of the flat shovel plate are provided at intervals on the upper surface of the flat shovel plate along the extension direction of the flat shovel plate. The side wall of the switch cover plate can abut against the angle sensor, and the switch cover plate is located at a position corresponding to the angle sensor with a gap between the flat shovel plates.

[0013] By adopting the above technical solution, the feedback information of the angle sensor can be used to know the silt coverage position in the turbid river water, thereby controlling the release of the collection box, making the operation more precise and efficient. The reserved gap ensures that even if there is a small amount of silt accumulation around the sensor, it will not affect the normal operation of the sensor.

[0014] Preferably, the downward pressure structure includes a downward pressure guide rail, a positioning guide wheel group and a driving guide wheel group, and the downward pressure guide rails are respectively vertically fixed to the side of the extension column close to the collection box; the positioning guide wheel groups are respectively rotatably connected to the collection box, and the positioning guide wheel groups are respectively elastically clamped on both sides of the corresponding downward pressure guide rails, and the guide wheels on the positioning guide wheel group are respectively rotatably connected to the side walls of the downward pressure guide rails; the driving guide wheel group is rotatably connected to the collection box, the driving guide wheel group abuts against the side walls of the downward pressure guide rail and is staggered with the positioning guide wheel group, and the driving guide wheel group drives the collection box to descend.

[0015] Preferably, the docking structure includes a bending guide rail, an extension guide rail and a docking joint, the bending guide rails are arranged vertically and are rotatably connected to the downward pressure guide rail along the direction of rotation of the extension column; the extension guide rail is rotatably connected to the topmost bending guide rail and extends to the side wall of the hull; the docking joint is fixed to the top of the extension guide rail and gradually becomes thinner.

[0016] Preferably, a telescopic matching structure is provided at the top of the extension guide rail, and the telescopic matching structure includes a telescopic sleeve, a telescopic piston and a support spring. The telescopic sleeve is fixed on both sides of the lifting bracket and is respectively arranged corresponding to the extension guide rails; the telescopic pistons are respectively fixed to the extension guide rails, passed through and accommodated in the telescopic sleeves; the support springs are respectively accommodated in the telescopic sleeves and are located on the upper and lower sides of the telescopic piston.

[0017] Preferably, a plurality of water spray ports are provided at the front end of the bottom of the flat shovel plate.

[0018] In summary, this application includes at least one of the following beneficial technical effects: 1. The shoveling structure is designed with a specific angle along the ship's forward direction, enabling it to more effectively cut and insert riverbed sediments during travel. The lifting structure not only allows the shoveling structure to adjust its operating depth according to the actual conditions of the river channel, but also makes the entire system well adaptable to terrain. The hollow structure is removed and a sliding opening is provided to separate the silt separated from the bottom laterally, making the incision smooth and coherent. The combination of the downward pressure structure and the docking structure simplifies the lifting and installation of the separation structure, avoiding the problem of restricted vision. 2. The switch cover is designed to slide and opens on the side away from the extension column. This design helps to create a smooth channel when discharging silt, avoiding blockage caused by silt accumulation; 3. Through the feedback information of the angle sensor, the coverage position of the silt in the turbid river water can be determined, thereby controlling the release of the collection box, making the operation more precise and efficient. The reserved gap ensures that even if there is a small amount of silt accumulation around the sensor, it will not affect the normal operation of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of an embodiment of the present application; Figure 2It is a structural diagram of an embodiment of the present application; Figure 3 is a cross-sectional view showing an angle sensor according to an embodiment of the present application; Figure 4 This is a partial view of the positioning guide wheel assembly shown in an embodiment of the present application.

[0020] Explanation of the accompanying drawings: 1. Hull; 2. Lifting structure; 21. Lifting bracket; 22. Elevator; 3. Mud shoveling structure; 31. Extension column; 32. Flat shovel plate; 33. Rotating support rod; 4. Removal structure; 41. Collection box; 42. Switch cover; 43. Driving cylinder; 5. Pressing structure; 51. Pressing guide rail; 52. Positioning guide wheel group; 53. Driving guide wheel group; 6. Docking structure; 61. Bending guide rail; 62. Extension guide rail; 63. Docking joint; 7. Mud cover; 8. Angle sensor; 9. Water nozzle; 10. Telescopic matching structure; 101. Telescopic sleeve; 102. Telescopic piston; 103. Support spring. DETAILED DESCRIPTION

[0021] The present application is further described in detail below with reference to the accompanying drawings.

[0022] The present application discloses a river channel cleaning and dredging boat, referring to Figure 1 、 2 It includes a hull 1, and a lifting structure 2 is provided on one side to adapt to the height between the hull 1 and the water bottom. The lifting structure 2 includes a lifting bracket 21 and an elevator 22. The lifting bracket 21 is connected to the side wall of the hull 1 for lifting, and the lifting bracket 21 extends vertically; the elevator 22 is fixed to the hull 1 and meshed with the lifting bracket 21, thereby driving the lifting bracket 21 to rise or fall, and the lifting bracket 21 separates silt through the mud shoveling structure 3 at the bottom.

[0023] Reference Figure 1 、 2 The mud shoveling structure 3 includes an extension column 31, a flat shovel plate 32 and a rotating support rod 33. The extension column 31 is rotatably connected to the bottom end of the lifting bracket 21 and extends downward, and the narrow surface of the extension column 31 is smoothly set forward, and the rotating end of the extension column 31 is sleeved with an upward extending mud cover 7. After the extension rod contacts the mud, it will accumulate upward. The mud cover 7 prevents the mud from continuing to accumulate upward and distribute it to both sides. The mud cover 7 can prevent the mud from accumulating and covering the rotating end of the extension column 31, thereby preventing the rotating end from getting stuck.

[0024] Reference Figure 1 、 2The flat shovel plate 32 extends horizontally and is fixed to the bottom end of the extension column 31. The front end of the flat shovel plate 32 is smoothly set, and the flat shovel plate 32 extends backward and is staggered with the extension column 31. The extension column 31 is short relative to the lifting bracket 21, and the resulting angle will not affect the height of the lifting bracket 21, which is convenient for control; one end of the rotating strut 33 is rotatably connected to the lifting bracket 21, and the other end is rotatably connected to the extension rod, and the two ends are hydraulically connected; the flat shovel plate 32 is tilted by the hydraulic telescopic control of the rotating strut 33, and the depth of the flat shovel plate 32 inserted into the silt can be controlled as the hull 1 moves.

[0025] Reference Figure 2 、 3 A plurality of water spray ports 9 are provided at the front end of the bottom of the flat shovel plate 32. When the flat shovel plate 32 penetrates into the silt, the friction between the silt and the bottom of the flat shovel plate 32 is large. By spraying water between the two, lubrication can be achieved, thereby reducing the friction on the flat shovel plate 32.

[0026] Reference Figure 2 、 3 When the flat shovel board 32 is inserted into the silt and moves forward, the silt covers the rear end of the flat shovel board 32. A removal structure 4 for removing the silt on the flat shovel board 32 is hoisted on the hull 1. The removal structure 4 includes a collecting box 41, a switch cover 42 and a driving cylinder 43. The top of the collecting box 41 is hoisted and connected to the side wall of the hull 1 and is arranged above the rearward extending end of the flat shovel board 32. The bottom of the collecting box 41 is open, and the top is provided with a backward opening for water flow; the upper surface of the flat shovel board 32 is provided with angle sensors 8 that rotate along the front and rear ends of the flat shovel board 32 at intervals along the extension direction of the flat shovel board 32. The angle sensors 8 at different positions are rotated backward by the contact of the silt to know the covering position of the flat shovel board 32 by the silt. When the silt corresponds to the bottom of the collecting box 41, the collecting box 41 separates the silt side wall through the downward pressing structure 5, so that the silt enters the collecting box 41.

[0027] Reference Figure 1 、 4 The downward pressing structure 5 includes a downward pressing guide rail 51, a positioning guide wheel group 52 and a driving guide wheel group 53. The downward pressing guide rails 51 are respectively vertically fixed to the side of the extension column 31 close to the collection box 41; the positioning guide wheel groups 52 are respectively rotatably connected to the collection box 41, and the positioning guide wheel groups 52 are respectively elastically clamped on both sides of the corresponding downward pressing guide rails 51 and adaptively clamped, and the guide wheels on the positioning guide wheel groups 52 are respectively rotatably connected to the side walls of the downward pressing guide rails 51; the driving guide wheel group 53 is rotatably connected to the collection box 41, and the driving guide wheel group 53 abuts against the side walls of the downward pressing guide rail 51 and is staggered with the positioning guide wheel group 52, and the driving guide wheel group 53 drives the collection box 41 to descend.

[0028] Reference Figure 1 、 4In order to facilitate the separation and docking of the positioning guide wheel group 52 and the downward pressure guide rail 51, a docking structure 6 is provided at the top of the downward pressure guide rail 51. The docking structure 6 includes a bending guide rail 61, an extension guide rail 62 and a docking joint 63. The bending guide rails 61 are arranged vertically and are rotatably connected to the downward pressure guide rail 51 along the direction of rotation of the extension column 31; the extension guide rail 62 is rotatably connected to the topmost bending guide rail 61 and extends to the side wall of the hull 1, thereby cooperating with the rotation of the extension column 31; the extension guide rail 62 is connected to the lifting bracket 21 by a telescopic matching structure 10 to adjust the length change between the extension guide rail 62 and the lifting bracket 21 when bending.

[0029] Reference Figure 2 、 4 The telescopic matching structure 10 includes a telescopic sleeve 101, a telescopic piston 102 and a support spring 103. The telescopic sleeve 101 is fixed on both sides of the lifting bracket 21 and is respectively arranged corresponding to the extension guide rails 62; the telescopic pistons 102 are respectively fixed to the extension guide rails 62, penetrated and accommodated in the telescopic sleeve 101; the support springs 103 are respectively accommodated in the telescopic sleeve 101 and are located on the upper and lower sides of the telescopic piston 102, so as to maintain stability while allowing the extension guide rails 62 to move up and down to match, thereby compensating for the change in the distance between the extension track and the two ends of the extension column 31 when the angle of the flat shovel plate 32 changes; when the flat shovel plate 32 tilts downward and inserts into the mud, the downward pressure guide rail 51 rises, and the extension guide rail 62 slides upward to match and extend.

[0030] Reference Figure 2 、 4 The docking joint 63 is fixed to the top of the extension guide rail 62 and gradually becomes thinner. At the same time, it is close to the hull 1 for easy observation, so that the collection box 41 can be easily hoisted, and the positioning guide wheel group 52 is sleeved on the extension guide rail 62 and slides along the extension guide rail 62 to the downward pressure guide rail 51.

[0031] Reference Figure 1 、 3 The switch cover 42 is slidably connected to the end face of the open end of the collection box 41, and the switch cover 42 slides toward the side away from the extension column 31. The side of the switch cover 42 close to the extension column 31 can be inserted into the side wall of the collection box 41, thereby maintaining stability after the cover is closed; the driving cylinders 43 are respectively fixed to the collection box 41, and the movable ends of the driving cylinders 43 are fixed to the switch cover 42, and extend and retract along the sliding direction of the switch cover 42; the side wall of the switch cover 42 can abut against the angle sensor 8 to reset the angle sensor 8, and the switch cover 42 is located at a position corresponding to the angle sensor 8, leaving a gap between the flat shovel plate 32 to prevent excessive extrusion.

[0032] The working process of the present application is as follows: the hull 1 is moved to a predetermined position, the lifting bracket 21 is lowered, the rotating strut 33 is extended to control the flat shovel board 32 to tilt previously, the hull 1 moves forward and controls the lifting bracket 21 to continue to descend so that the flat shovel board 32 is inserted into the silt, and the bottom of the silt is separated by the flat shovel board 32. The inclined insertion into the silt will not hinder the descent of the collection box 41 and the switch cover 42. The angle sensor 8 is abutted by the silt and tilted backward, so that it can be known that the silt is in the area of ​​the flat shovel board 32 without visual observation. When the silt covers the flat shovel board 32, the hull 1 stops moving forward and the silt is collected. The collecting box 41 is mounted on the extension guide rail 62 by hoisting, and is moved downward along the extension guide rail 62, the bending guide rail 61, and the downward pressure guide rail 51 by the driving guide wheel group 53 and buckled on the flat shovel plate 32, so that the silt is placed in the collecting box 41. At the same time, the opening above the collecting box 41 is drained to make it easier for the silt to enter. Then the switch cover 42 slides to close the collecting box 41. When the switch cover 42 is closed, the angle sensor 8 is reset by the abutment. Then the collecting box 41 is driven up by the crane, moved to the hull 1 and released, and then the hull 1 moves forward again to clean the silt.

[0033] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A river channel cleaning and dredging vessel, comprising a hull (1), characterized in that: The hull (1) is provided with a lifting structure (2) on one side. The bottom end of the lifting structure (2) is rotatably connected to a horizontally extending shoveling structure (3). The shoveling structure (3) rotates along the bottom end of the lifting structure (2) to form an angle with the forward direction of the hull (1). The shoveling structure (3) extends backward, and a corresponding removal structure (4) is lifted and connected above the extension end. The removal structure (4) is hollow and vertically hoisted on the hull (1), and the bottom surface is provided with an opening that can be slid backward and opened. The top end of the removal structure (4) is provided with a rearward opening for water flow to pass through. A downward pressure structure (5) is fixed on the removal structure (4) and is sleeved and lifted and connected to the shoveling structure (3). The top end of the downward pressure structure (5) is rotatably connected to a docking structure (6) along the rotation direction of the shoveling structure (3). The docking structure (6) extends upward and is elastically lifted and connected to the top end of the lifting structure (2). The top end of the docking structure (6) gradually becomes thinner upward. The downward pressure structure (5) is sleeved and slides on the top end of the docking structure (6).

2. A river channel clearing and dredging vessel according to claim 1, characterized in that: The lifting structure (2) comprises a lifting bracket (21) and an elevator (22); the lifting bracket (21) is connected to the side wall of the hull (1) in a lifting manner, and the lifting bracket (21) extends vertically; the elevator (22) is fixed to the hull (1) and is engaged with the lifting bracket (21).

3. A river channel clearing and dredging vessel according to claim 2, characterized in that: The mud shoveling structure (3) comprises an extension column (31), a flat shovel plate (32) and a rotating support rod (33). The extension column (31) is rotatably connected to the bottom end of the lifting bracket (21) and extends downward, and the narrow surface of the extension column (31) is forward and smoothly arranged; the flat shovel plate (32) extends horizontally and is fixed to the bottom end of the extension column (31), the front end of the flat shovel plate (32) is smoothly arranged, and the flat shovel plate (32) extends backward and is staggered with the extension column (31); one end of the rotating support rod (33) is rotatably connected to the lifting bracket (21), and the other end is rotatably connected to the extension rod, and the two ends are hydraulically connected.

4. A river channel clearing and dredging vessel according to claim 3, characterized in that: The rotating end of the extension column (31) is sleeved with an upwardly extending mud-proof cover (7).

5. The river channel clearing and dredging vessel according to claim 3, characterized in that: The removal structure (4) comprises a collection box (41), a switch cover plate (42) and a driving cylinder (43); the top end of the collection box (41) is hoisted and connected to the side wall of the hull (1) and is arranged above the rearward extension end of the flat shovel plate (32); the bottom of the collection box (41) is open; the switch cover plate (42) is slidably connected to the end surface of the open end of the collection box (41), and the switch cover plate (42) slides toward the side away from the extension column (31), and the side of the switch cover plate (42) close to the extension column (31) can be plugged into the side wall of the collection box (41); the driving cylinders (43) are respectively fixed to the collection box (41), and the movable ends of the driving cylinders (43) are fixed to the switch cover plate (42) and extend and retract along the sliding direction of the switch cover plate (42).

6. A river channel clearing and dredging vessel according to claim 5, characterized in that: Angle sensors (8) rotating along the front and rear ends of the flat shovel plate (32) are provided on the upper surface of the flat shovel plate (32) at intervals along the extension direction of the flat shovel plate (32); the side wall of the switch cover plate (42) can abut against the angle sensor (8); and the switch cover plate (42) is located at a position corresponding to the angle sensor (8) with a gap between the flat shovel plates (32).

7. The river channel clearing and dredging vessel according to claim 5, characterized in that: The downward pressing structure (5) comprises a downward pressing guide rail (51), a positioning guide wheel group (52) and a driving guide wheel group (53). The downward pressing guide rail (51) is respectively fixed vertically to the side of the extension column (31) close to the collection box (41); the positioning guide wheel group (52) is respectively rotatably connected to the collection box (41), and the positioning guide wheel group (52) is respectively elastically clamped on both sides of the corresponding downward pressing guide rail (51), and the guide wheels on the positioning guide wheel group (52) are respectively rotatably connected to the side wall of the downward pressing guide rail (51); the driving guide wheel group (53) is rotatably connected to the collection box (41), the driving guide wheel group (53) abuts against the side wall of the downward pressing guide rail (51) and is staggered with the positioning guide wheel group (52), and the driving guide wheel group (53) drives the collection box (41) to descend.

8. The river channel clearing and dredging vessel according to claim 1, characterized in that: The docking structure (6) comprises a bending guide rail (61), an extension guide rail (62) and a docking joint (63); the bending guide rails (61) are arranged vertically and are rotatably connected to the downward pressure guide rail (51) along the direction of rotation of the extension column (31); the extension guide rail (62) is rotatably connected to the topmost bending guide rail (61) and extends to the side wall of the hull (1); and the docking joint (63) is fixed to the top of the extension guide rail (62) and gradually becomes thinner.

9. A river channel clearing and dredging vessel according to claim 8, characterized in that: The top end of the extension guide rail (62) is provided with a telescopic matching structure (10), which includes a telescopic sleeve (101), a telescopic piston (102) and a support spring (103). The telescopic sleeve (101) is fixed to both sides of the lifting bracket (21) and is respectively arranged corresponding to the extension guide rail (62); the telescopic piston (102) is respectively fixed to the extension guide rail (62), penetrates and is accommodated in the telescopic sleeve (101); and the support spring (103) is respectively accommodated in the telescopic sleeve (101) and is located on the upper and lower sides of the telescopic piston (102).

10. The river channel clearing and dredging vessel according to claim 3, characterized in that: The front end of the bottom of the flat shovel plate (32) is provided with a plurality of water spraying ports (9).