A device and method for cleaning aquatic plants in irrigation channels

Abstract

This invention provides a device and method for cleaning aquatic weeds in irrigation channels. The device includes a hull and a propeller. The front of the hull is equipped with a shovel mechanism with lifting and pitching degrees of freedom and a soil-loosening mechanism that cuts weed roots by rotating. The rear of the hull is equipped with a conveying mechanism and a soil storage bin. The soil-loosening mechanism is located behind the shovel mechanism, and a suction mechanism connected to the soil storage bin is located behind the soil-loosening mechanism. A weed-cutting mechanism is located between the conveying mechanism and the soil-loosening mechanism. The weed-cutting mechanism is equipped with at least two blades, which use rotation and linear displacement to break up the aquatic weeds, which are then collected by the conveying mechanism. The hull has support mechanisms on both sides perpendicular to the direction of travel, which can be unfolded or folded to support the inner sides of the channel. This invention can remove aquatic weeds from irrigation channels to the maximum extent and achieve efficient cleaning.

Description

Technical Field

[0001] This invention relates to the field of irrigation canal management technology, and in particular to a device and method for cleaning weeds in irrigation canals. Background Technology

[0002] Irrigation canals are crucial infrastructure for ensuring agricultural production and boosting the rural economy, playing a vital role in guaranteeing stable and high yields despite drought or flooding. Due to long-term erosion from rainwater and natural dust accumulation, thick, lumpy silt builds up at the bottom of irrigation canals, promoting the growth of aquatic plants and hindering water flow. Furthermore, broken or rotting aquatic plants, if not removed promptly, increase humus and nutrients within the canals, leading to unhealthy plant growth. Therefore, timely removal of aquatic plants from irrigation canals is essential.

[0003] Currently, the main methods for clearing aquatic plants are as follows:

[0004] 1. Manual cleaning using tools such as chainsaws and pitchforks is inefficient and incurs high labor costs.

[0005] II. A waterweed cleaning device, as described in existing patent publication CN114885668A, includes an engine, propulsion system, cutting device, conveying device, rolling dewatering device, catalyst adding device, stirring device, compression device, and a storage bin. The cutting device cuts the waterweeds, which are then transformed through rolling and catalyst addition before being transported to the storage bin. However, due to the narrow structure of irrigation channels and the influence of environment and time, the bottom silt is thick and contains hard lumps. The cutting device cannot adequately cut the roots of the waterweeds, resulting in incomplete cleaning. Furthermore, the silt and waterweeds are processed together, preventing separate collection. Summary of the Invention

[0006] The purpose of this invention is to provide a device and method for cleaning aquatic plants in irrigation channels, which can separate the collection of silt and aquatic plants and is suitable for cleaning aquatic plants in irrigation channels.

[0007] The technical solution of the present invention is: an irrigation canal weed clearing device, comprising a hull and a propeller for propelling the hull forward. The front end of the hull is provided with a shovel mechanism having degrees of freedom in lifting and pitching, and a soil loosening mechanism for cutting grass roots by self-rotation. The rear end of the hull is provided with a conveying mechanism and a soil storage bin. The soil loosening mechanism is located behind the shovel mechanism, and a suction mechanism communicating with the soil storage bin is located behind the soil loosening mechanism. A grass cutting mechanism is provided between the conveying mechanism and the soil loosening mechanism. The grass cutting mechanism is provided with at least two blades, which are used to break up the weeds by rotation and linear displacement. The broken weeds are collected by the conveying mechanism. The hull is provided with support mechanisms on both sides perpendicular to the forward direction, which are used to support the inner sides of the canal by unfolding or folding.

[0008] In the above scheme, a soil-loosening mechanism is installed at the front end of the mowing mechanism, which can not only loosen the soil but also cut the roots of aquatic plants. A mud-shoveling mechanism is installed at the front end of the soil-loosening mechanism. The hard blocks in the silt are broken up by first shoveling and then loosening the soil, so that the grass roots can be cut off completely. Then, the aquatic plants are shredded by the cutting process. The two additional mud-shoveling and soil-loosening processes can thoroughly remove aquatic plants in the irrigation canal and improve cleaning efficiency. Furthermore, the added mud-suction mechanism and the conveying mechanism form two systems for silt collection and aquatic plant collection, so as to realize the separate collection of aquatic plants and silt, realize the feasibility of cleaning the irrigation canal and improve the resource reuse.

[0009] Preferably, the shovel mechanism includes a first central shaft, a first connecting rod, a shovel plate, a first drive mechanism capable of outputting lifting and lowering degrees of freedom, and a second drive mechanism capable of outputting rotational degrees of freedom; the first drive mechanism is connected to the hull, and the power output end of the second drive mechanism is connected to the first central shaft; one end of the first connecting rod is connected to the first central shaft, and the other end of the first connecting rod is connected to the shovel plate; the first drive mechanism is used to drive the second drive mechanism and the first central shaft, the first connecting rod, and the shovel plate thereon to lift and lower.

[0010] Preferably, the soil loosening mechanism includes a second central shaft rotatably connected to the hull and a plurality of rotating cutterheads arranged on the second central shaft.

[0011] Preferably, the sludge suction mechanism includes a variable pressure pump with a sludge inlet and a sludge outlet, the variable pressure pump being mounted on the hull; the sludge inlet of the variable pressure pump is connected to a negative pressure suction head via a sludge suction pipe, the negative pressure suction head being provided with a third drive mechanism for driving its rotation; the sludge outlet of the variable pressure pump is connected to a sludge storage bin via a sludge outlet pipe.

[0012] Preferably, the conveying mechanism includes a first conveyor and a second conveyor. The first conveyor outputs upward power in a direction parallel to the ship's forward movement, and the second conveyor outputs outward power in a direction perpendicular to the ship's forward movement. The first conveyor is provided with a plurality of first hook teeth that bend in the direction of its power, and the second conveyor is provided with a plurality of second hook teeth that bend in the direction of its power.

[0013] Preferably, the mowing mechanism includes a second connecting rod, a fourth driving member mounted on the hull through a housing, and a transmission shaft. The power output end of the fourth driving member is connected to a first spur gear, and the transmission shaft is provided with a second spur gear and a first bevel gear, wherein the first spur gear meshes with the second spur gear.

[0014] One end of the second connecting rod is provided with a second bevel gear that meshes with the first bevel gear, and the other end of the second connecting rod is connected to at least two of the cutting tools.

[0015] Preferably, the mowing mechanism further includes a fifth driving member and a first cutter, a second cutter, and a third cutter stacked in sequence. The first cutter is connected to a second connecting rod, the first cutter and the third cutter are fixedly connected, and the second cutter is linearly displaced between the first cutter and the third cutter by the fifth driving member.

[0016] Preferably, the fifth driving component includes a planetary carrier, planetary gears, a sun gear, roller bearings, a connecting shaft, and a turntable; the end of the second connecting rod is provided with an internal gear ring, the planetary carrier, planetary gears, and sun gear constitute a planetary gear set, the planetary gears mesh with the internal gear ring, the lower end of the connecting shaft is connected to the sun gear, the upper end of the connecting shaft is connected to the turntable, the roller bearing is mounted on the connecting shaft, and the middle part of the first cutter is mounted on the roller bearing;

[0017] The first cutting tool is provided with a first boss extending in a first direction, and the second cutting tool is provided with a first slot extending in a second direction and a second slot adapted to the first boss. The first direction and the second direction are perpendicular to each other on the cutting tool plane. The turntable is provided with an eccentric second boss, which is fitted into the first slot.

[0018] Preferably, the support mechanism includes a mounting frame, a support rod, a telescopic cylinder, a first connecting ring, a second connecting ring, a shock-absorbing spring, and a support wheel. The mounting frame is fixed to the hull, and its two ends are respectively provided with hinge points A and C. The mounting frame also has a hinge point B located near hinge point A. One end of the support rod is provided with hinge point D, and the other end of the support rod is connected to the support wheel via a shock-absorbing spring. The support rod also has a hinge point E located near hinge point D, and hinge points A and D are hinged together. One end of the first connecting ring, one end of the second connecting ring, and one end of the telescopic cylinder are hinged to each other. The other end of the first connecting ring is hinged to hinge point B, the other end of the second connecting ring is hinged to hinge point E, and the other end of the telescopic cylinder is hinged to hinge point C. The telescopic cylinder extends and retracts to push or pull the support rod to unfold or fold through the first and second connecting rings.

[0019] This invention also improves a method for clearing weeds from irrigation channels, comprising the following steps:

[0020] Step 1: Place the above-mentioned irrigation canal weed removal device in the irrigation canal and unfold the support mechanism so that the end of the support mechanism rolls into contact with the inner side of the canal.

[0021] Step 2: Adjust the height and pitch angle of the shovel mechanism;

[0022] Step 3: Start the propeller, soil loosening mechanism, conveying mechanism, mud suction mechanism, and grass mowing mechanism;

[0023] Step four: As the boat moves forward, the shovel mechanism loosens the silt and the loosening mechanism breaks up the hard lumps in the loosened silt, while cutting off the roots of aquatic plants.

[0024] Step 5: The sludge suction mechanism sucks in the broken sludge and transfers it to the sludge storage bin for storage.

[0025] Step six: The aquatic plants cut at the roots are shredded by the rotation of the mowing mechanism and the linear motion of the blades, and then thrown into the conveying mechanism by the centrifugal force of the rotation of the mowing mechanism.

[0026] Step 7: The conveying mechanism transports the chopped aquatic plants to the outside of the channel;

[0027] Complete the aquatic plant removal work.

[0028] Compared with related technologies, the beneficial effects of the present invention are as follows:

[0029] First, a soil-loosening mechanism is installed at the front end of the mowing mechanism, which can not only loosen the soil but also cut the roots of aquatic plants. A mud-shoveling mechanism is installed at the front end of the soil-loosening mechanism. The hard blocks in the silt are broken up by first shoveling and then loosening the soil, so as to fully cut the grass roots. Then, the aquatic plants are shredded by the cutting process. The two additional mud-shoveling and soil-loosening processes can remove aquatic plants in the irrigation canal to the greatest extent and achieve efficient cleaning.

[0030] Second, the added sludge suction mechanism and conveying mechanism form two systems for sludge collection and aquatic plant collection, realizing the separate collection of aquatic plants and sludge, realizing the feasibility of cleaning irrigation canals and improving resource reuse.

[0031] Third, support mechanisms are provided on both sides of the hull to support the inner wall of the irrigation canal, providing stability for the cleaning device during operation, making it more suitable for the working environment inside the irrigation canal.

[0032] Fourth, the support mechanism can be unfolded or folded to suit irrigation canals of different widths, making it highly versatile. Attached Figure Description

[0033] Figure 1 A schematic diagram of the irrigation canal weed removal device provided by the present invention from a first perspective;

[0034] Figure 2 A schematic diagram of the irrigation canal weed removal device provided by the present invention from a second perspective;

[0035] Figure 3 for Figure 1 Enlarged diagram of point A in the diagram;

[0036] Figure 4 This is a schematic diagram of the soil loosening mechanism;

[0037] Figure 5 This is a schematic diagram of the lawnmower mechanism;

[0038] Figure 6 This is a schematic diagram showing the installation of the third tool, the second tool, the first tool, and the second connecting rod.

[0039] Figure 7 for Figure 6 A schematic diagram of the decomposition process;

[0040] Figure 8 for Figure 7 Enlarged diagram of point B in the image;

[0041] Figure 9 for Figure 6 Internal connection diagram;

[0042] Figure 10 This is a structural diagram of the supporting mechanism;

[0043] Figure 11 A schematic diagram showing the support mechanism folded to 0°;

[0044] Figure 12 This is a schematic diagram showing the support mechanism unfolded to 180°.

[0045] In the attached diagram: 1. Hull; 11. Main body; 12. Fixing plate; 13. Trapezoidal plate; 14. Square hole; 2. Propeller; 3. Mud-shoveling mechanism; 31. First drive mechanism; 311. First servo motor; 312. Linear guide rail; 32. Second drive mechanism; 321. Second servo motor; 322. Rotary table; 33. First central shaft; 34. First connecting rod; 35. Mud-shoveling plate; 4. Soil loosening mechanism; 41. Second central shaft; 42. 43. Rotary cutter head; 44. Drive motor; 5. Transmission belt; 5. Conveying mechanism; 51. First conveyor; 52. Second conveyor; 53. First hook tooth; 54. Second hook tooth; 55. First baffle; 56. Second baffle; 57. Third baffle; 58. First support frame; 59. Second support frame; 6. Mud storage bin; 70. Mud suction mechanism; 71. Negative pressure suction head; 72. Third drive mechanism; 73. Mud suction pipe; 74. Variable pressure pump; 75. Mud discharge pipe; 80. Grass cutting mechanism; 81. Fourth drive component; 82. First spur gear; 83. Transmission shaft; 84. Second spur gear; 85. First bevel gear; 86. Second bevel gear; 87. Second connecting rod; 871. Internal gear ring; 88. First cutter; 881. First boss; 882. Center hole; 89. Second cutter; 891. First slot; 892. Second slot; 810. Third... Cutting tool; 811, Fifth drive component; 8111, Planetary carrier; 8112, Planetary gear; 8113, Sun gear; 8114, Roller bearing; 8115, Connecting shaft; 8116, Turntable; 8117, Second boss; 812, Housing; 9, Support mechanism; 91, Mounting bracket; 92, Support rod; 93, Telescopic cylinder; 94, First connecting ring; 95, Second connecting ring; 96, Shock-absorbing spring; 97, Support wheel. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" used below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0047] like Figure 1 , Figure 2 As shown, the irrigation canal weed cleaning device provided in this embodiment includes a hull 1, a propeller 2, a shovel mechanism 3, a loosening mechanism 4, a conveying mechanism 5, a mud storage bin 6, a mud suction mechanism 7, a grass cutting mechanism 8, and a support mechanism 9.

[0048] The hull 1 includes a body 11, a fixing plate 12, a trapezoidal plate 13, and a square hole 14. The body 11 has a square hole 14 for the first conveyor 51 to pass through. In addition to a top plate, the body 11 also has side plates extending vertically downwards along the outer edge of the top plate and the sides of the square hole 14. A propeller 2 is mounted on the side plate at the rear end of the body 11. Support mechanisms 9 and mud storage bins 6 are mounted on the side plates on both sides of the body 11. The side plates at the square hole 14 provide support for the first conveyor 51. The trapezoidal plate 13 is connected to the front end of the body 11. The long base of the trapezoidal plate 13 is connected to the body 11, and the short base is located in the forward direction. The trapezoidal plate 13 ensures the buoyancy of the hull 1 while reducing resistance. Fixing plates 12 are provided on both sides of the trapezoidal plate 13. The upper end of the fixing plate 12 is connected close to the body 11, and the lower end extends downwards in a Z-shape. The lower end of the fixed plate 12 is connected to a mud-shoveling mechanism 3 and a soil-loosening mechanism 4, with the soil-loosening mechanism 4 located at the rear end of the mud-shoveling mechanism 3.

[0049] like Figure 1 , Figure 3 As shown, the shovel mechanism 3 includes a first drive mechanism 31, a second drive mechanism 32, a first central shaft 33, a first connecting rod 34, and a shovel plate 35. The first drive mechanism 31 includes a first servo motor 311 and a linear guide rail 312. The second drive mechanism 32 includes a second servo motor 321 and a rotary table 322. The back of the linear guide rail 312 is mounted on the inner side of the fixed plate 12, and the linear guide rails 312 on the two fixed plates 12 are arranged close to each other. The front of the linear guide rail 312 is connected to the rotary table 322. The first servo motor 311 is driven by the linear guide rail 312, enabling the linear guide rail 312 to output lifting and lowering degrees of freedom, thus raising and lowering the rotary table 322. The two ends of the first central shaft 33 are connected to the rotary table 322 at corresponding positions. The second servo motor 321 drives the rotary table 322 to rotate, thereby rotating the first central shaft 33.

[0050] Multiple first connecting rods 34 are arranged axially upwards on the first central shaft 33. Each first connecting rod 34 is an L-shaped rod bent downwards, with its lower end connected to the shovel plate 35. Rotation of the first central shaft 33 adjusts the pitch angle of the shovel plate 35, which, combined with lifting adjustment, allows for adjustment of the shoveling depth. The shovel plate 35 is a triangular plate with its apex facing forward.

[0051] The first drive mechanism 31 on the two end fixing plates 12 can operate synchronously or separately, and the second drive mechanism 32 can also operate synchronously or separately, so as to make appropriate selection according to the actual thickness of the silt.

[0052] like Figure 1 , Figure 4As shown, the soil loosening mechanism 4 includes a second central shaft 41, a rotating cutter head 42, a drive motor 43, and a transmission belt 44. Both ends of the second central shaft 41 are rotatably connected to the fixed plate 12 via roller bearings. One end of the second central shaft 41 extends outward from the fixed plate 12 and is equipped with a pulley. The drive motor 43 is mounted on the upper end of the fixed plate 12, and the transmission belt 44 connects the pulley on the motor shaft of the drive motor 43 and the pulley on the second central shaft 41. Multiple rotating cutter heads 42 are mounted on the second central shaft 41. When the drive motor 43 rotates at high speed, it drives the second central shaft 41 and its rotating cutter heads 42 to rotate at high speed, breaking up the loosened soil clumps on the shovel plate 35 and simultaneously cutting off the roots of aquatic plants.

[0053] The blades on the rotating cutterhead 42 are arc-shaped, with multiple blades arranged on the circumference and also located at both ends of the axial direction. The rotating cutterhead 42 is made of hard rubber to avoid damaging the cement at the bottom of the irrigation canal.

[0054] like Figure 1 As shown, the conveying mechanism 5 includes a first conveyor 51 and a second conveyor 52. The first conveyor 51 outputs upward power in a direction parallel to the forward movement of the hull 1. The second conveyor 52 outputs outward power in a direction perpendicular to the forward movement of the hull 1. The first conveyor 51 is provided with multiple first hooks 53 that bend in the direction of its power, and the second conveyor 52 is provided with multiple second hooks 54 that bend in the direction of its power. The first hooks 53 and the second hooks 54 can hook onto aquatic plants to prevent them from slipping during conveying.

[0055] like Figure 2 As shown, the first conveyor 51 has first baffles 55 on both sides parallel to its power direction. The second conveyor 52 has second baffles 56 on both sides parallel to its power direction. A third baffle 57 is provided at the opposite end of the power direction of the second conveyor 52. Both the first conveyor 51 and the second conveyor 52 use conveyor belts. The first baffles 55, second baffles 56, and third baffles 57 are used to prevent aquatic plants from falling off.

[0056] The bottom of the first conveyor 51 is connected to the body 11 via a first support frame 58. The bottom of the second conveyor 52 is connected to the body 11 via a second support frame 59. Both the first support frame 58 and the second support frame 59 are U-shaped structures, providing stable support.

[0057] The mud storage bin 6 is designed as a box-shaped structure, with a hole at the top for the mud suction pipe 73 to pass through. The mud storage bin 6 can be integrally formed with the main body 11, or it can be a detachable structure. The number of mud storage bins 6 corresponds to the number of mud suction pipes 73.

[0058] like Figure 1As shown, the sludge suction mechanism 7 includes a variable pressure pump 74 with a sludge inlet and a sludge outlet. The variable pressure pump 74 is mounted on the trapezoidal plate 13 of the hull 1. The sludge inlet of the variable pressure pump 74 is connected to the negative pressure suction head 71 through a sludge suction pipe 73. The negative pressure suction head 71 is provided with a third drive mechanism 72 for driving its rotation. The third drive mechanism 72 is a rotary steering motor. The power output end of the third drive mechanism 72 meshes with the internal gear ring of the negative pressure suction head 71 through a gear, driving the negative pressure suction head 71 to rotate and suck in sludge circumferentially. The sludge outlet of the variable pressure pump 74 is connected to the sludge storage bin 6 through a sludge outlet pipe 75. The sludge sucked in by the negative pressure suction head 71 is transported to the sludge storage bin 6 for storage, thereby achieving the separation of aquatic plants and sludge.

[0059] The variable pressure pump 74 can adjust the suction power according to the sludge suction requirements. The front end of the negative pressure suction head 71 is equipped with a filter screen to prevent branches and stones from being sucked in and causing blockage.

[0060] like Figure 1 , Figure 6 As shown, the mowing mechanism 8 includes a second connecting rod 87, a fourth driving component 81 mounted on the trapezoidal plate 13 via a housing 812, and a transmission shaft 83. The fourth driving component 81 is a stepper motor, with a first spur gear 82 connected to its power output end. The transmission shaft 83 is equipped with a second spur gear 84 and a first bevel gear 85, with the first spur gear 82 meshing with the second spur gear 84. One end of the second connecting rod 87 is equipped with a second bevel gear 86 that meshes with the first bevel gear 85, and the other end of the second connecting rod 87 is connected to at least two of the blades. The axes of the first bevel gear 85 and the second bevel gear 86 intersect at a 15° angle.

[0061] like Figure 1 As shown, the lower end of the trapezoidal plate 13 is provided with two second connecting rods 87 and a cutting tool. The second connecting rods 87 are connected to the lower end of the trapezoidal plate 13 via a toothless slewing bearing. The two second connecting rods 87 rotate under the drive of the fourth driving member 81 and the gear set to cut up aquatic plants.

[0062] like Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, the mowing mechanism 8 further includes a fifth driving component 811 and a first blade 88, a second blade 89, and a third blade 810 stacked sequentially. The fifth driving component 811 includes a planetary carrier 8111, planetary gears 8112, a sun gear 8113, a roller bearing 8114, a connecting shaft 8115, and a turntable 8116. An internal gear ring 871 is provided inside the end of the second connecting rod 87. The planetary carrier 8111, planetary gears 8112, and sun gear 8113 constitute a planetary gear set. The planetary gears 8112 mesh with the internal gear ring 871. The lower end of the connecting shaft 8115 is fixedly connected to the sun gear 8113. The upper end of the connecting shaft 8115 is connected to the turntable 8116 by screws. The roller bearing 8114 is fitted onto the connecting shaft 8115. The first blade 88 has a central hole 882 in its middle, and the central hole 882 is a countersunk hole. The roller bearing 8114 is fitted into the lower end of the central hole 882, and the turntable 8116 is fitted into the upper end of the central hole 882 with clearance. The first cutter 88 and the second connecting rod 87 are fixed together by bolts. The first cutter 88 and the third cutter 810 are fixed together by bolts.

[0063] The first cutting tool 88 has a first boss 881 extending in a first direction, and the second cutting tool 89 has a first slot 891 extending in a second direction and a second slot 892 adapted to the first boss 881. The first direction and the second direction are perpendicular to each other on the cutting tool plane. The turntable 8116 has an eccentric second boss 8117, which is fitted into the first slot 891.

[0064] The second tool 89 is driven to linearly displace between the first tool 88 and the third tool 810 by the fourth driving member 81. The second boss 8117 outputs the linear displacement driving force, and the first slot 891 provides the linear displacement path. The first boss 881 and the second slot 892 provide guidance for the linear displacement.

[0065] The fourth driving component 81 drives the first spur gear 82 to rotate, transmitting torque to the second connecting rod 87 via the second spur gear 84, the first bevel gear 85, and the second bevel gear 86, thereby driving the three cutters to rotate at high speed. The two second connecting rods 87 and the cutters on them are symmetrically arranged, giving the machine a 150° fan-shaped clearing area, enabling efficient and large-area chopping of long sections of aquatic plants. The reciprocating linear cutting motion of the second cutter 89 prevents the cutter from becoming entangled in aquatic plants, ensuring operational safety while enhancing the cutting effect.

[0066] like Figure 1 As shown, the support mechanism 9 is arranged in four sets at the front, rear, left and right sides of the hull 1 to ensure the stability of the whole machine during forward movement and cleaning operations.

[0067] like Figure 1 , Figure 10 As shown, the support mechanism 9 includes a mounting frame 91, a support rod 92, a telescopic cylinder 93, a first connecting ring 94, a second connecting ring 95, a shock-absorbing spring 96, and a support wheel 97. The mounting frame 91 is fixed to the side plate of the main body 11. Hinge points A and C are respectively provided at both ends of the mounting frame 91. Hinge point B is also provided on the mounting frame 91 near hinge point A. One end of the support rod 92 is provided with hinge point D, and the other end of the support rod 92 is connected to the support wheel 97 via the shock-absorbing spring 96. Hinge point E is also provided on the support rod 92 near hinge point D, and hinge point A is hinged to hinge point D. One end of the first connecting ring 94, one end of the second connecting ring 95, and one end of the telescopic cylinder 93 are hinged to each other. The other end of the first connecting ring 94 is hinged to hinge point B, the other end of the second connecting ring 95 is hinged to hinge point E, and the other end of the telescopic cylinder 93 is hinged to hinge point C. The telescopic cylinder 93 is a hydraulic cylinder, which extends and retracts to push or pull the support rod 92 to unfold or fold through the first connecting ring 94 and the second connecting ring 95.

[0068] like Figure 11 As shown, when the telescopic cylinder 93 retracts, it pulls the first connecting ring 94 and the second connecting ring 95 together, causing the support rod 92 to move closer to the mounting frame 91, thus achieving folding. The retraction can be adjusted according to the width of the irrigation canal. Figure 12 As shown, when the telescopic cylinder 93 extends, it pushes the first connecting ring 94 and the second connecting ring 95 to open, causing the support rod 92 to swing away from the mounting frame 91, thus achieving deployment. The width can be adjusted according to the irrigation canal width. Regardless of the adjustment, the support wheel 97 must be in contact with the inner wall of the irrigation canal during operation. Under the action of the shock-absorbing spring 96, it provides shock absorption and buffering, adapting to uneven inner wall surfaces.

[0069] This invention also provides a method for clearing weeds from irrigation channels, comprising the following steps:

[0070] Step 1: Place the above-mentioned irrigation canal weed removal device in the irrigation canal and unfold the support mechanism 9 so that the support wheel 97 rolls into contact with the inner side of the canal.

[0071] Step 2: Adjust the height and pitch angle of the shovel mechanism 3 to bring the shovel plate 35 to the appropriate depth and angle position and lock it.

[0072] Step 3: Start propeller 2, soil loosening mechanism 4, conveying mechanism 5, mud suction mechanism 7 and grass cutting mechanism 8;

[0073] Step 4: As the hull 1 moves forward, the shovel 35 loosens the silt and the rotating cutter 42 of the loosening mechanism 4 breaks up the hard lumps in the loosened silt, while cutting off the roots of the aquatic plants.

[0074] Step 5: Start the variable pressure pump 74 and the third drive mechanism 72. The rotating negative pressure suction head 71 sucks in the broken sludge in the circumferential direction and transfers it to the sludge storage bin 6 for storage.

[0075] Step six: The aquatic plants cut at the roots are shredded by the high-speed rotation and linear motion of the mowing mechanism 8, and then thrown into the conveying mechanism 5 by the centrifugal force of the rotation of the mowing mechanism 8.

[0076] Step 7: The conveying mechanism 5 transports the chopped aquatic plants to the outside of the channel for collection;

[0077] Complete the aquatic plant removal work. The collected silt and broken aquatic plants can be used in agricultural production, realizing resource reuse.

[0078] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A device for clearing weeds from irrigation channels, comprising a hull (1) and a propeller (2) for propelling the hull (1) forward, characterized in that, The front end of the hull (1) is provided with a shovel mechanism (3) with lifting and pitching degrees of freedom and a soil loosening mechanism (4) that cuts grass roots by self-rotation. The rear end of the hull (1) is provided with a conveying mechanism (5) and a mud storage bin (6). The soil loosening mechanism (4) is located behind the shovel mechanism (3). The rear side of the soil loosening mechanism (4) is provided with a mud suction mechanism (7) that communicates with the mud storage bin (6). A grass cutting mechanism (8) is provided between the conveying mechanism (5) and the soil loosening mechanism (4). The grass cutting mechanism (8) is provided with at least two blades. The at least two blades are used to break the aquatic plants by rotation and linear displacement. The broken aquatic plants are received by the conveying mechanism (5). The hull (1) is provided with support mechanisms (9) on both sides perpendicular to the forward direction, which are used to support the inner sides of the channel by unfolding or folding. The mowing mechanism (8) includes a second connecting rod (87), a fourth drive member (81) mounted on the hull (1) through a housing (812), a transmission shaft (83), a fifth drive member (811), and a first cutter (88), a second cutter (89), and a third cutter (810) stacked in sequence. The power output end of the fourth drive member (81) is connected to a first spur gear (82). The transmission shaft (83) is provided with a second spur gear (84) and a first bevel gear (85). The first spur gear (82) meshes with the second spur gear (84). One end of the second connecting rod (87) is provided with a second bevel gear (86) that meshes with the first bevel gear (85), and the other end of the second connecting rod (87) is connected to at least two of the cutting tools; The first cutting tool (88) is connected to the second connecting rod (87), the first cutting tool (88) is fixedly connected to the third cutting tool (810), and the second cutting tool (89) moves linearly between the first cutting tool (88) and the third cutting tool (810) through the fifth driving member (811).

2. The irrigation canal weed clearing device according to claim 1, characterized in that, The shovel mechanism (3) includes a first central shaft (33), a first connecting rod (34), a shovel plate (35), a first drive mechanism (31) capable of outputting lifting and lowering degrees of freedom, and a second drive mechanism (32) capable of outputting rotational degrees of freedom. The first drive mechanism (31) is connected to the hull (1), and the first central shaft (33) is connected to the power output end of the second drive mechanism (32). One end of the first connecting rod (34) is connected to the first central shaft (33), and the other end of the first connecting rod (34) is connected to the shovel plate (35). The first drive mechanism (31) is used to drive the second drive mechanism (32) and the first central shaft (33), the first connecting rod (34), and the shovel plate (35) on it to lift and lower.

3. The irrigation canal weed clearing device according to claim 1, characterized in that, The soil loosening mechanism (4) includes a second central shaft (41) rotatably connected to the hull (1) and a plurality of rotating cutterheads (42) arranged on the second central shaft (41).

4. The irrigation canal weed clearing device according to claim 1, characterized in that, The sludge suction mechanism (7) includes a variable pressure pump (74) with a sludge inlet and a sludge outlet, which is installed on the hull (1). The sludge inlet of the variable pressure pump (74) is connected to a negative pressure suction head (71) through a sludge suction pipe (73), and the negative pressure suction head (71) is provided with a third drive mechanism (72) for driving its rotation. The sludge outlet of the variable pressure pump (74) is connected to a sludge storage bin (6) through a sludge outlet pipe (75).

5. The irrigation canal weed clearing device according to claim 1, characterized in that, The conveying mechanism (5) includes a first conveyor (51) and a second conveyor (52). The first conveyor (51) outputs power from bottom to top in a direction parallel to the forward movement of the hull (1), and the second conveyor (52) outputs power from inside to outside in a direction perpendicular to the forward movement of the hull (1). The first conveyor (51) is provided with a plurality of first hook teeth (53) that bend in the direction of its power, and the second conveyor (52) is provided with a plurality of second hook teeth (54) that bend in the direction of its power.

6. The irrigation canal weed clearing device according to claim 1, characterized in that, The fifth driving component (811) includes a planetary carrier (8111), planetary gears (8112), a sun gear (8113), a roller bearing (8114), a connecting shaft (8115), and a turntable (8116); the end of the second connecting rod (87) is provided with an internal gear ring (871), the planetary carrier (8111), planetary gears (8112), and sun gear (8113) constitute a planetary gear set, the planetary gears (8112) mesh with the internal gear ring (871), the lower end of the connecting shaft (8115) is connected to the sun gear (8113), the upper end of the connecting shaft (8115) is connected to the turntable (8116), the roller bearing (8114) is mounted on the connecting shaft (8115), and the middle part of the first cutter (88) is mounted on the roller bearing (8114); The first cutting tool (88) is provided with a first boss (881) extending in a first direction, and the second cutting tool (89) is provided with a first slot (891) extending in a second direction and a second slot (892) adapted to the first boss (881). The first direction and the second direction are perpendicular to each other on the cutting tool plane. The turntable (8116) is provided with an eccentric second boss (8117), and the second boss (8117) is assembled in the first slot (891).

7. The irrigation canal weed clearing device according to claim 1, characterized in that, The support mechanism (9) includes a mounting frame (91), a support rod (92), a telescopic cylinder (93), a first connecting ring (94), a second connecting ring (95), a shock-absorbing spring (96), and a support wheel (97). The mounting frame (91) is fixed to the hull (1). The two ends of the mounting frame (91) are respectively provided with hinge point A and hinge point C. The mounting frame (91) is also provided with hinge point B near hinge point A. One end of the support rod (92) is provided with hinge point D. The other end of the support rod (92) is connected to the support wheel (97) through the shock-absorbing spring (96). The support rod (92) is also provided with a hinge point E near the hinge point D, and the hinge point A is hinged to the hinge point D; one end of the first connecting ring (94), one end of the second connecting ring (95) and one end of the telescopic cylinder (93) are hinged to each other, the other end of the first connecting ring (94) is hinged to the hinge point B, the other end of the second connecting ring (95) is hinged to the hinge point E, and the other end of the telescopic cylinder (93) is hinged to the hinge point C; the telescopic cylinder (93) extends and retracts to push or pull the support rod (92) to unfold or fold through the first connecting ring (94) and the second connecting ring (95).

8. A method for clearing aquatic weeds from irrigation channels, characterized in that, Includes the following steps: Step 1: Place the irrigation channel weed removal device as described in any one of claims 1-7 in the irrigation channel and unfold the support mechanism (9) so that the end of the support mechanism (9) rolls into contact with the inner side of the channel. Step 2: Adjust the height and pitch angle of the shovel mechanism (3); Step 3: Start the propeller (2), soil loosening mechanism (4), conveying mechanism (5), mud suction mechanism (7) and grass cutting mechanism (8); Step 4: As the hull (1) moves forward, the shovel mechanism (3) loosens the silt and the loosening mechanism (4) breaks up the hard lumps in the loosened silt, while cutting off the roots of the aquatic plants. Step 5: The sludge suction mechanism (7) sucks in the crushed sludge and transfers it to the sludge storage bin (6) for storage. Step six: The aquatic plants cut at the roots are shredded by the rotation of the mowing mechanism (8) and the linear motion of the blades, and then thrown into the conveying mechanism (5) by the centrifugal force of the rotation of the mowing mechanism (8). Step 7: The conveying mechanism (5) transports the chopped aquatic plants to the outside of the channel; Complete the aquatic plant removal work.

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