A highly efficient dredging device and its usage method for water conservancy project construction

Abstract

The present invention discloses a high-efficiency dredging device for water conservancy project construction, which includes a cleaning boat and two groups of cleaning frames. The cleaning frame is composed of two cleaning frames docked left and right. A collection frame is arranged at the upper end of the cleaning boat. One side of the cleaning boat is provided with an opening in a penetrating manner, and a rotating shaft is horizontally rotatably connected in the opening. A connecting block is fixedly sleeved on the outer side of the rotating shaft. An installation rod is fixedly connected to the outer side of the cleaning frame. The installation rods on the outer sides of the two cleaning frames adjust the distance through an adjusting mechanism, and the adjusting mechanism is movably connected to the connecting block through a connecting mechanism. A driving mechanism for driving the rotating shaft to rotate is fixedly arranged on the outer side of the cleaning boat. By adjusting the width of the cleaning frame to match the existing river width, the present invention can avoid dredging the river back and forth multiple times, and by setting two groups of cleaning frames, one group can continue the cleaning work while the other group is discharging materials, which significantly improves the cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the field of dredging in water conservancy projects, and particularly to a high-efficiency dredging device and a using method for water conservancy project construction. Background Art

[0002] A water conservancy project is a general term for various engineering constructions built to control, utilize, and protect surface and underground water resources and the environment. A dredging device for a water conservancy project usually refers to a mechanical device that stirs the silt deposited at the bottom of a river into a turbid water state and allows it to flow away with the river water, thereby playing a role in dredging. The siltation has increasingly affected the normal functioning of various functions such as flood control, drainage, irrigation, water supply, and navigation, so dredging is very important.

[0003] During the process of dredging the river channel of a water conservancy project, there are the following two technical defects to be optimized: on the one hand, since the widths of different river channels are different and the width of the dredging device is limited, the dredging boat needs to travel back and forth multiple times to achieve comprehensive dredging; on the other hand, during the dredging process, when the silt and debris in the dredging frame reach a certain level, the dredging boat needs to clean the silt and debris in the dredging frame in a timely manner before proceeding with subsequent cleaning. In this way, the overall subsequent dredging time will be increased.

[0004] The above two technical defects will both affect the overall dredging efficiency. Therefore, the present invention provides a high-efficiency dredging device and a using method for water conservancy project construction to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose a high-efficiency dredging device and a using method for water conservancy project construction. By adjusting the width of the dredging frame, the dredging range is improved to meet the dredging of river channels with different widths, and two sets of dredging frames are set to be used alternately. When one set of dredging frames is unloaded and cleaned, the other set of dredging frames is replaced in a timely manner to achieve continuous dredging, thereby being able to solve the problem of low dredging efficiency in the existing background art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A highly efficient dredging device for water conservancy project construction, including a cleaning boat and two groups of cleaning frames. The cleaning frames are composed of two cleaning frames docked left and right. A collection frame is arranged at the upper end of the cleaning boat. One side of the cleaning boat is provided with an opening through which a rotating shaft is horizontally rotatably connected. A connecting block is fixedly sleeved on the outer side of the rotating shaft. Installation rods are fixedly connected to the outer sides of the cleaning frames. The installation rods on the outer sides of the two cleaning frames adjust the distance through an adjusting mechanism, and the adjusting mechanism is movably connected to the connecting block through a connecting mechanism. A driving mechanism for driving the rotating shaft to rotate is fixedly arranged on the outer side of the cleaning boat, and a discharging mechanism for docking with the upper cleaning frame is also installed at the upper end of the collection frame.

[0008] Preferably, filter nets are also arranged on the outer sides of the two cleaning frames. Communication interfaces are arranged on the docking surfaces of the two cleaning frames. One cleaning frame movably penetrates through the communication interface of the other cleaning frame and is slidably connected to the inner wall of the other cleaning frame.

[0009] Preferably, a pressure sensor is arranged between the contact surface of the bottom of one cleaning frame and the inner wall of the other cleaning frame.

[0010] Preferably, the adjusting mechanism includes a fixing plate. Two fixing blocks are fixedly connected to the bottom of the fixing plate. An adjusting shaft is rotatably connected between adjacent fixing blocks. A driving motor for driving the adjusting shaft to rotate is fixedly connected to the outer side of one of the fixing blocks. A slide rail is also horizontally arranged at the bottom of the adjusting mechanism.

[0011] Preferably, the installation rods on the outer sides of the two cleaning frames are symmetrically arranged between the two fixing blocks, and the upper ends of the installation rods are slidably connected to the slide rail. Opposite threads are arranged on the outer side of the adjusting shaft, and the adjusting shaft is threadedly penetrated and connected to the two installation rods respectively through the opposite threads on the outer side.

[0012] Preferably, the connecting mechanism includes a connecting rod fixedly connected to the connecting block. A connecting plate is fixedly connected to the lower end of the connecting rod. A plurality of inserting rods movably penetrating through the fixing plate are fixedly connected to the lower end of the connecting plate. A limiting block is fixedly connected to the bottom of the inserting rod.

[0013] Preferably, the lower end of the connecting plate and the upper end of the fixing plate are connected by a plurality of springs. The plurality of springs are respectively movably sleeved on the outer sides of the plurality of inserting rods, and the springs are in a stretched state by default.

[0014] Preferably, the driving mechanism includes a driving motor fixedly arranged inside the cleaning boat. The power end of the driving motor and one end of the rotating shaft both movably penetrate through the cleaning boat and extend to the outside. A pulley is fixedly connected to the power end of the driving motor and the power end of the rotating shaft. Adjacent pulleys are connected by a belt. The pressure sensor is electrically connected to the driving motor through a PLC controller.

[0015] Preferably, the discharging mechanism includes two sets of mounting rails fixedly arranged at the upper end of the collecting frame and a discharging frame butt-jointed to the bottom of the cleaning frame at the upper end. A sliding block is fixedly connected to the bottom of the discharging frame and is slidably arranged outside the mounting rail. An electric push rod for driving the sliding block to slide along the mounting rail in a limited manner is also fixedly connected to the outside of the mounting rail.

[0016] Preferably, a high-efficiency dredging device and a using method for water conservancy project construction, characterized in that the video analysis module further includes an information extraction module, a vehicle speed analysis module, and a vehicle positioning module.

[0017] A using process of a using method for a high-efficiency dredging device for water conservancy project construction includes:

[0018] S1: According to the widths of different river channels, start the adjusting motor through an external switch, drive the adjusting shaft at the power end to rotate by using the adjusting motor, and drive two sets of symmetric mounting rods outside the adjusting shaft to drive the cleaning frames to move relative to each other, thereby adjusting the width of the cleaning frame formed by the two cleaning frames and making it match the width of the river channel;

[0019] S2: Drive the cleaning boat to move in the river channel. The spring that stretches in the connecting mechanism and the weight of the cleaning frame itself can make the bottom of the cleaning frame contact the bottom of the river channel. Driven by the movement of the cleaning boat, drive the cleaning frame to clean the silt and sundries in the river channel, and filter out water through the filter screen outside the cleaning frame;

[0020] S3: After the sundries cleaned by the cleaning frame reach a certain degree and the pressure sensor between the two cleaning frames reaches the rated value, start the driving motor in the driving mechanism to rotate through the PLC controller. The driving motor drives the rotating shaft to rotate 180°, swap the positions of the upper cleaning frame and the lower cleaning frame full of materials, and use the lower idle cleaning frame to continue dredging the river channel. When the rotating shaft rotates 90°, the electric push rod drives the sliding block and the discharging frame at the power end to slide and butt-joint to the bottom of the upper cleaning frame;

[0021] S4: After the upper cleaning frame is turned over and inverted, the silt and sundries cleaned in the upper cleaning frame are poured into the discharging frame and slide along the inclined discharging frame into the collecting frame for collection, which is convenient for subsequent unified cleaning. After the pouring is completed, the electric push rod drives the discharging frame to move back.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The present invention is designed based on the existing structure of the cleaning boat and carried out on this basis. The two docking cleaning frames are adjusted by the adjusting mechanism, and then the width of the finally formed cleaning frame is adaptively adjusted to meet the use of river dredging with different widths. At the same time, the present invention adopts two cleaning frame structures and cooperates with the driving mechanism to flip and adjust the angles of the two. At the same time, a collection frame for docking the cleaning frame is arranged on the cleaning boat, so that continuous cleaning operations can be realized by exchanging another collection frame during unloading. In summary, the present invention adjusts the width of the cleaning frame to match the existing river width, thereby avoiding dredging the river back and forth multiple times. And setting two cleaning frames allows another group to continue cleaning work while unloading, thereby greatly increasing the overall cleaning effect and worthy of popularization and use in the existing field of river dredging. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present invention;

[0025] Figure 2 For the present invention Figure 1 It is a top view schematic diagram of the collection frame structure in the present invention;

[0026] Figure 3 For the present invention Figure 1 It is a schematic diagram of the cleaning frame structure in the present invention;

[0027] Figure 4 For the present invention Figure 1 It is a top view schematic diagram of the collection frame structure in the present invention;

[0028] Figure 5 For the present invention Figure 1 It is an enlarged schematic diagram of the structure at A in the present invention;

[0029] Figure 6 For the present invention Figure 1 It is a side view schematic diagram of the adjusting mechanism in the present invention.

[0030] In the figure: 1 - cleaning boat, 2 - cleaning frame, 201 - filter screen, 202 - docking port, 203 - pressure sensor, 3 - collection frame, 4 - opening, 5 - rotating shaft, 6 - connecting block, 7 - mounting rod, 8 - adjusting mechanism, 801 - fixing plate, 802 - fixing block, 803 - adjusting shaft, 804 - adjusting motor, 805 - slide rail, 9 - connecting mechanism, 901 - connecting rod, 902 - connecting plate, 903 - inserting rod, 904 - limiting block, 905 - spring, 10 - driving mechanism, 1001 - pulley, 1002 - belt, 11 - unloading mechanism, 1101 - mounting rail, 1102 - unloading frame, 1103 - slider, 1104 - electric push rod. DETAILED DESCRIPTION OF THE INVENTION

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0035] A highly efficient dredging device for water conservancy project construction includes a cleaning boat 1 and two groups of cleaning frames. The cleaning frames are composed of two cleaning frames 2 docked left and right. A collection box 3 is arranged at the upper end of the cleaning boat 1. An opening 4 is penetrated through one side of the cleaning boat 1, and a rotating shaft 5 is horizontally rotatably connected in the opening 4. A connecting block 6 is fixedly sleeved on the outer side of the rotating shaft 5. An installation rod 7 is fixedly connected to the outer side of the cleaning frame 2. The installation rods 7 on the outer sides of the two cleaning frames 2 adjust the distance through an adjusting mechanism 8, and the adjusting mechanism 8 is movably connected to the connecting block 6 through a connecting mechanism 9. A driving mechanism 10 for driving the rotation of the rotating shaft 5 is fixedly arranged on the outer side of the cleaning boat 1. A discharging mechanism 11 for docking with the upper cleaning frame is further installed at the upper end of the collection box 3.

[0036] Among them, filter screens 201 are also arranged on the outer sides of the two groups of cleaning frames 2. The filter screens 201 are used to filter silt and sundries and facilitate the discharge of river water. Connecting ports 202 that communicate with each other are arranged on the docking surfaces of the two groups of cleaning frames 2. One group of cleaning frames 2 movably penetrates through the connecting ports 202 of the other group of cleaning frames 2 and is slidably connected to the inner wall of the other group of cleaning frames 2, and the splicing combination of the two groups of cleaning frames 2 is realized, and a cleaning frame matching the width of the river channel can be formed.

[0037] Among them, the adjusting mechanism 8 includes a fixing plate 801. Two fixing blocks 802 are fixedly connected to the bottom of the fixing plate 801. An adjusting shaft 803 is rotatably connected between adjacent fixing blocks 802. An adjusting motor 804 for driving the rotation of the adjusting shaft 803 is fixedly connected to the outside of one of the fixing blocks 802. A slide rail 805 is also horizontally arranged at the bottom of the adjusting mechanism 8. The mounting rods 7 on the outside of the two groups of cleaning frames 2 are symmetrically arranged between the two groups of fixing blocks 802, and the upper ends of the mounting rods 7 are slidably connected to the slide rail 805. Opposite-threaded portions are arranged on the outside of the adjusting shaft 803, and the adjusting shaft 803 is threadedly penetrated and connected to the two groups of mounting rods 7 respectively through the opposite-threaded portions on the outside. During use, the adjusting motor 804 drives the rotation of the adjusting shaft 803, and the opposite-threaded portions on the outside of the adjusting shaft 803 drive the two groups of mounting rods 7 and the cleaning frames 2 connected to the mounting rods 7 to move relatively, thereby adjusting the width of the cleaning frame composed of the two groups of cleaning frames 2 to meet the use of river channels with different widths. Furthermore, during cleaning, it is not necessary for the cleaning boat to travel back and forth for cleaning, indirectly improving the overall cleaning efficiency.

[0038] Among them, the connecting mechanism 9 includes a connecting rod 901 fixedly connected to the connecting block 6. A connecting plate 902 is fixedly connected to the lower end of the connecting rod 901. A plurality of inserting rods 903 that movably penetrate through the fixing plate 801 are fixedly connected to the lower end of the connecting plate 902. A limiting block 904 is fixedly connected to the bottom of the inserting rod 903. The lower end of the connecting plate 902 and the upper end of the fixing plate 801 are connected by a plurality of springs 905. The plurality of springs 905 are respectively movably sleeved on the outside of the plurality of inserting rods 903, and the springs 905 are in a stretched state by default. During installation and use, the springs 905 pull the adjusting mechanism 8 at the bottom and the cleaning frame connected to the adjusting mechanism 8. Since some river channels are relatively shallow, the bottom of the cleaning frame supports and contacts the bottom of the river channel for cleaning at this time. When the river channel is relatively deep, the bottom of the cleaning frame can still contact the river channel under its own gravity and the stretching of the springs 905, facilitating the dredging operation. Moreover, the arrangement of the plurality of springs 905 and the inserting rods 903 can increase the connection stability, and the limiting block 904 at the bottom of the inserting rod 903 can limit the installation of the adjusting mechanism 8, achieving the effect of preventing detachment and falling.

[0039] Among them, a pressure sensor 203 is arranged between the bottom of a group of cleaning frames 2 and the contact surface of the inner wall of another group of cleaning frames 2. The driving mechanism 10 includes a driving motor fixedly arranged inside the cleaning boat 1. The power end of the driving motor and one end of the rotating shaft 5 both extend to the outside after passing through the cleaning boat 1 movably, and belt pulleys 1001 are fixedly connected to the power end of the driving motor and the power end of the rotating shaft 5. The adjacent belt pulleys 1001 are connected by a belt 1002. The pressure sensor 203 is electrically connected to the driving motor through a PLC controller. Subsequently, during use, when the collected silt and sundries reach a certain level, the driving mechanism 10 can be automatically activated to swap the positions of this group of cleaning frames and the idle cleaning frames for cleaning. Specifically, the driving motor drives the belt pulley 1001 at the power end and drives the belt pulley 1001 at the outer end of the rotating shaft 5 to rotate through the belt 1002, thereby driving the rotating shaft 5 to rotate synchronously. The two groups of cleaning frames connected to the outside of the rotating shaft 5 are driven to adjust the angle to complete the position swapping. It can not only achieve automatic unloading but also replace the original cleaning frames with the idle cleaning frames in time for continuous river dredging, which increases the overall dredging efficiency in disguise.

[0040] Among them, the unloading mechanism 11 includes two groups of mounting rails 1101 fixedly arranged at the upper end of the collection box 3 and a discharge box 1102 connected to the bottom of the upper end of the cleaning frame. A slider 1103 slidably arranged outside the mounting rail 1101 is fixedly connected to the bottom of the discharge box 1102, and an electric push rod 1104 for driving the slider 1103 to slide along the mounting rail 1101 in a limited manner is also fixedly connected to the outside of the mounting rail 1101. During unloading, the electric push rod 1104 drives the slider 1103 to slide along the mounting rail 1101, and then the inclined discharge box 1102 is docked to the bottom of the cleaning frame. The silt and sundries collected inside the cleaning frame will automatically fall into the discharge box 1102 after the cleaning frame is flipped and are automatically collected along the inclined discharge box 1102, which is convenient for subsequent unified cleaning.

[0041] The usage process of a high-efficiency dredging device for water conservancy project construction includes:

[0042] S1: According to the widths of different rivers, start the adjusting motor 804 through an external switch, use the adjusting motor 804 to drive the adjusting shaft 803 at the power end to rotate, and drive the two groups of symmetrically arranged mounting rods 7 outside the adjusting shaft 803 to drive the cleaning frames 2 to move relatively, thereby adjusting the width of the cleaning frame formed by the two groups of cleaning frames 2 to match the width of the river;

[0043] S2: Drive the cleaning boat to move in the river channel. The spring that extends in the connecting mechanism 9 and the weight of the cleaning frame itself can make the bottom of the cleaning frame contact the bottom of the river channel. Driven by the movement of the cleaning boat, the cleaning frame drives the cleaning of silt and sundries in the river channel, and the water is filtered out through the filter screen 201 on the outside of the cleaning frame 2;

[0044] S3: When the sundries cleaned by the cleaning frame reach a certain level and the pressure sensor 203 between the two cleaning frames 2 reaches the rated value, the drive motor in the drive mechanism 10 is started to rotate through the PLC controller. The drive motor drives the rotating shaft 5 to rotate 180°, swapping the positions of the upper cleaning frame and the lower cleaning frame full of debris, and using the idle cleaning frame at the lower end to continue dredging the river channel. When the rotating shaft 5 rotates 90°, the electric push rod 1104 drives the slider 1103 at the power end and the discharge frame 1102 to slide and dock with the bottom of the upper cleaning frame;

[0045] S4: After the upper cleaning frame is turned over and inverted, the silt and sundries cleaned in the upper cleaning frame are poured into the discharge frame 1102 and slide along the inclined discharge frame 1102 into the collection frame 3 for collection, which is convenient for subsequent unified cleaning. After the dumping is completed, the electric push rod 1104 drives the discharge frame 1102 to move back.

[0046] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

[0047] In the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

Claims

1. A highly efficient dredging device for water conservancy project construction, comprising a cleaning boat (1) and two groups of cleaning frames. The cleaning frames are composed of two cleaning frames (2) docked left and right. It is characterized in that, The upper end of the cleaning boat (1) is provided with a collection box (3). One side of the cleaning boat (1) is provided with an opening (4) through which a rotating shaft (5) is horizontally rotatably connected. A connecting block (6) is fixedly sleeved on the outer side of the rotating shaft (5). The outer side of the cleaning frame (2) is fixedly connected with a mounting rod (7). The mounting rods (7) on the outer sides of the two cleaning frames (2) adjust the distance through an adjusting mechanism (8), and the adjusting mechanism (8) is movably connected with the connecting block (6) through a connecting mechanism (9). A driving mechanism (10) for driving the rotating shaft (5) to rotate is fixedly arranged on the outer side of the cleaning boat (1). A discharging mechanism (11) for docking with the upper cleaning frame is further installed at the upper end of the collection box (3). A filter screen (201) is arranged on the outer side surfaces of the two cleaning frames (2). Communication ports (202) are arranged on the docking surfaces of the two cleaning frames (2). One cleaning frame (2) movably penetrates through the communication port (202) of the other cleaning frame (2) and is slidably connected with the inner wall of the other cleaning frame (2). A pressure sensor (203) is arranged between the bottom surface of one cleaning frame (2) and the contact surface of the inner wall of the other cleaning frame (2). The adjusting mechanism (8) includes a fixing plate (801). Two fixing blocks (802) are fixedly connected to the bottom of the fixing plate (801). An adjusting shaft (803) is rotatably connected between adjacent fixing blocks (802). An adjusting motor (804) for driving the adjusting shaft (803) to rotate is fixedly connected to the outer side of one of the fixing blocks (802). A slide rail (805) is further horizontally arranged at the bottom of the adjusting mechanism (8). The mounting rods (7) on the outer sides of the two cleaning frames (2) are symmetrically arranged between the two fixing blocks (802), and the upper ends of the mounting rods (7) are slidably connected with the slide rail (805). Opposite threads are arranged on the outer side of the adjusting shaft (803), and the adjusting shaft (803) is threadedly penetrated and connected with the two mounting rods (7) respectively through the opposite threads on the outer side thereof.

2. The high-efficiency dredging equipment for water conservancy project construction according to claim 1, characterized in that, The connecting mechanism (9) includes a connecting rod (901) fixedly connected to the connecting block (6). A connecting plate (902) is fixedly connected to the lower end of the connecting rod (901). A plurality of inserting rods (903) that movably penetrate through the fixing plate (801) are fixedly connected to the lower end of the connecting plate (902). A limiting block (904) is fixedly connected to the bottom of the inserting rod (903).

3. The high-efficiency dredging equipment for water conservancy project construction according to claim 2, characterized in that, The lower end of the connecting plate (902) is connected with the upper end of the fixing plate (801) through a plurality of springs (905). The plurality of springs (905) are respectively movably sleeved on the outer sides of the plurality of inserting rods (903), and the springs (905) are in an extended state in the default state.

4. An efficient dredging device for water conservancy project construction according to claim 3, characterized in that The driving mechanism (10) includes a driving motor fixedly arranged inside the cleaning boat (1). The power end of the driving motor and one end of the rotating shaft (5) both extend to the outside after passing through the cleaning boat (1) movably, and pulley wheels (1001) are fixedly connected to the power end of the driving motor and the power end of the rotating shaft (5). The adjacent pulley wheels (1001) are connected by a belt (1002). The pressure sensor (203) is electrically connected to the driving motor through a PLC controller.

5. An efficient dredging device for water conservancy project construction according to claim 4, characterized in that, The discharging mechanism (11) includes two sets of mounting rails (1101) fixedly arranged at the upper end of the collection box (3) and a discharging box (1102) butt-jointed to the bottom of the cleaning frame at the upper end. A slider (1103) slidably arranged outside the mounting rail (1101) is fixedly connected to the bottom of the discharging box (1102), and an electric push rod (1104) for driving the slider (1103) to slide along the mounting rail (1101) in a limited manner is also fixedly connected to the outside of the mounting rail (1101).

6. The usage method of a high-efficiency dredging device for water conservancy project construction according to any one of claims 1-5, characterized in that, The usage process includes: S1: According to the widths of different river channels, start the adjusting motor (804) through an external switch. Use the adjusting motor (804) to drive the adjusting shaft (803) at the power end to rotate, and drive the two sets of symmetric mounting rods (7) outside the adjusting shaft (803) to drive the cleaning frame (2) to move relatively, thereby adjusting the width of the cleaning frame formed by the two cleaning frames (2) to match the width of the river channel. S2: Drive the cleaning boat to move in the river channel. The spring that stretches in the connecting mechanism (9) and the weight of the cleaning frame itself can make the bottom of the cleaning frame contact the bottom of the river channel. Driven by the movement of the cleaning boat, the cleaning frame is driven to clean the silt and sundries in the river channel, and the water is filtered out through the filter screen (201) outside the cleaning frame (2). S3: After the sundries cleaned by the cleaning frame reach a certain degree, when the pressure sensor (203) between the two cleaning frames (2) reaches the rated value, the driving motor in the driving mechanism (10) is started to rotate through the PLC controller. The driving motor drives the rotating shaft (5) to rotate 180°, swapping the positions of the upper cleaning frame and the lower cleaning frame full of silt. Then, the lower idle cleaning frame is used to continue the river channel dredging. When the rotating shaft (5) rotates 90°, the electric push rod (1104) drives the slider (1103) and the discharging box (1102) at the power end to slide and butt-joint to the bottom of the upper cleaning frame. S4: After the upper cleaning frame is turned over and inverted, the silt and sundries cleaned in the upper cleaning frame are poured into the discharging box (1102) and slide along the inclined discharging box (1102) into the collection box (3) for collection, which is convenient for subsequent unified cleaning. After the pouring is completed, the electric push rod (1104) drives the discharging box (1102) to move back.

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