Mowing and pulling device for farmland canal

Abstract

The invention discloses a mowing and pulling device for farmland canals, which comprises a frame, a mowing device and a pulling chain device, the mowing device and the pulling chain device are mounted on the frame, a suspension lug is arranged on the frame, the pulling chain device is arranged behind the mowing device in the advancing direction, and the pulling chain device comprises a conveying chain assembly. A chain of the conveying chain assembly is provided with grass pulling elastic teeth used for conveying weeds cut by the mowing device to the outside of the water channel. The mowing and grass pulling device can be detachably matched with different walking devices through the hanging lugs, and the universality is high; after the weeds are cut by the mowing device, the cut weeds are conveyed out of the canal through the weed stirring elastic teeth on the rear weed stirring chain device, so that the problem that the cut weeds remain on the canal wall of the canal and are difficult to discharge is solved, the integrated operation of cutting and conveying the weeds on the canal wall of the canal is realized, and the efficiency of cleaning the weeds on the canal wall of the farmland canal is improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a weeding device for farmland canals. Background Art

[0002] After the farmland canal has been in operation for a period of time, the canal walls will be covered with weeds. In order to ensure the irrigation function of the canal, weed clearing operations need to be carried out regularly.

[0003] At present, the traditional method is to pull or cut the weeds manually, which has low cleaning efficiency and high work intensity. The more efficient method is to use weeding equipment to weed. However, after weeding with weeding equipment, a large amount of weeds remain on the canal wall and are difficult to remove; further, the weeds after being cut will accumulate at the bottom of the canal wall, further hindering the cleaning of the weeds at the bottom of the canal wall, and it is still necessary to manually enter the canal to clean them out, which is inefficient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a weeding device for farmland canals.

[0005] In order to solve the above technical problems, the present invention discloses a grass cutting and weeding device for farmland canals, comprising a frame, a grass cutting device installed on the frame, and a grass cutting chain device, wherein the frame is provided with hanging ears, the grass cutting chain device is arranged behind the forward direction of the grass cutting device, and the grass cutting chain device comprises a conveying chain assembly, and the chain of the conveying chain assembly is provided with grass cutting spring teeth for conveying the weeds cut by the grass cutting device to the outside of the canal.

[0006] Furthermore, the weed-clearing chain device also includes a sprocket frame and a driving sprocket, a driven sprocket and a tensioning sprocket mounted on the sprocket frame and cooperating with the chain, a spring tooth mounting plate is mounted on the chain, the weed-clearing spring teeth are mounted on the spring tooth mounting plate, and the chain includes a grass-collecting chain segment arranged on both sides of the tensioning sprocket for conveying the cut weeds to the channel wall and a weed-clearing chain segment for conveying the weeds conveyed to the channel wall outward along the channel wall.

[0007] Furthermore, the grass-moving spring tooth comprises a torsion spring portion and a grass-moving rod, one end of the torsion spring portion is fixedly connected to the spring tooth mounting plate, and the other end is fixedly connected to the grass-moving rod, and the grass-moving rod is perpendicular to the conveying surface of the chain.

[0008] Furthermore, the grass-moving spring tooth includes two groups of torsion spring parts and a grass-moving rod that are integrally formed and symmetrically arranged, and an arc-shaped connecting rod is formed between the two groups of torsion spring parts, and the arc-shaped connecting rod is pressed against the spring tooth mounting plate.

[0009] Furthermore, the conveying chain assembly is composed of two groups arranged opposite to each other, the two ends of the spring tooth mounting plate are respectively fixedly connected to a chain of the conveying chain assembly, and the grass-clearing spring teeth are evenly distributed along the forward direction of the mowing device; a contour wheel is arranged under the frame, and when the contour wheel fits the channel wall, the grass-clearing spring teeth on the grass-clearing chain segment are elastically compressed and fit to the bottom of the channel.

[0010] Furthermore, the mowing device includes a cutting blade frame, a moving blade group, a fixed blade group, a hydraulic motor assembly and a crank-connecting rod mechanism. The fixed blade group is installed on the cutting blade frame, the moving blade group cooperates with the fixed blade group and reciprocates with the cutting blade frame. The moving blade group is connected to the connecting rod of the crank-connecting rod mechanism, and the length of the connecting rod is adjustable to control the cutting amplitude of the moving blade group.

[0011] Furthermore, a pointed tip is provided at the front of any fixed knife of the fixed knife group, and a fixed knife groove cooperating with the movable knife of the movable knife group is provided inside; the lower side of the fixed knife groove of the fixed knife is fixedly connected to the cutting knife frame, and the upper side is suspended; grooves are provided on the inclined cutting edges on both sides of the movable knife.

[0012] Furthermore, it also includes a hydraulic motor assembly for driving the active sprocket and the crank, the hydraulic motor assembly including a hydraulic motor, a quick locking bolt and a base installed on the frame, the base is provided with a mounting side plate, the mounting side plate is provided with a side plate connecting hole connected to the motor mounting hole of the hydraulic motor, the center of the mounting side plate is provided with a motor output shaft extension hole, the quick locking bolt includes a handle nut, a locking plate, a locking plate driving rod, and a bolt rod that can be inserted into the motor mounting hole and the side plate connecting hole, the handle nut is threadedly connected to the outer wall of one end of the bolt rod, the locking plate driving rod is slidably connected to the inner hole of the bolt rod, the locking plate is hinged to the side wall hole at the other end of the bolt rod and is driven to rotate in and out of the side wall hole by the locking plate driving rod.

[0013] Furthermore, the quick locking bolt also includes a bolt handle connected to one end of the bolt rod, and the bolt handle includes an index finger hook plate and a middle finger hook plate arranged on both sides to cooperate with the index finger and the middle finger respectively.

[0014] Furthermore, the locking plate includes a locking paddle and a locking wing that are vertically integrated, the locking wing is hinged to the side wall hole, and the other end of the locking plate driving rod is provided with a convex ring that drives the locking paddle to reciprocate, and the quick locking bolt also includes a locking spring arranged in the inner hole of the bolt rod, one end of the locking spring abuts against the bottom of the inner hole, and the other end abuts against the convex ring so that the end of the locking wing keeps the tendency to expose the side wall hole.

[0015] Compared with the prior art, the advantages of the present invention are: The grass cutting and weeding device of the present invention can be detachably adapted to different walking devices through the hanging ears, and has strong versatility. After the grass cutting device cuts the weeds, the cut weeds are transported to the outside of the water channel through the grass-moving spring teeth on the rear grass-moving chain device, thereby avoiding the problem that the cut weeds remain on the water channel wall and are difficult to be discharged, realizing the integrated operation of weed cutting and transporting on the water channel wall, and improving the weed cleaning efficiency of the farmland water channel wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is an axonometric schematic diagram of a grass cutting and weeding device for farmland water channels disclosed in an embodiment of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of point A; Figure 3 It is a front view schematic diagram of a grass cutting and weeding device for farmland water channels disclosed in an embodiment of the present invention; Figure 4 It is an axonometric schematic diagram of a mowing device disclosed in an embodiment of the present invention; Figure 5 It is a front view schematic diagram of a hydraulic motor assembly disclosed in an embodiment of the present invention; Figure 6 It is an axonometric schematic diagram of a hydraulic motor assembly disclosed in an embodiment of the present invention; Figure 7 It is a schematic cross-sectional view of a quick locking bolt disclosed in an embodiment of the present invention.

[0017] Legend: 1. Frame; 2. Contour wheel; 3. Grass-pulling chain device; 31. Conveying chain assembly; 311. Chain; 312. Grass-pulling spring teeth; 3121. Torsion spring; 3122. Grass-pulling rod; 3123. Arc-shaped connecting rod; 313. Spring tooth mounting plate; 314. Grass-collecting chain segment; 315. Grass-pulling chain segment; 32. Sprocket frame; 33. Driving sprocket; 34. Driven sprocket; 35. Tensioner Sprocket; 36, locking bolt; 4, mowing device; 41, cutting knife frame; 42, moving knife group; 421, moving knife; 422, notch; 43, fixed knife group; 431, fixed knife; 432, fixed knife groove; 44, crank connecting rod mechanism; 441, crank; 442, connecting rod; 5, hanging ear; 8, hydraulic motor assembly; 81, hydraulic motor; 811, motor mounting hole; 82, quick locking Bolt; 821, handle nut; 8211, nut body; 8212, rotating rod; 822, locking plate; 8221, locking paddle; 8222, locking wing; 823, locking plate driving rod; 8231, convex ring; 824, bolt rod; 8241, inner hole; 8242, side wall hole; 825, bolt handle; 8251, index finger hook plate; 8252, middle finger hook plate; 826, locking spring; 83, base; 831, side plate installation; 8311, side plate connecting hole; 8312, motor output shaft extension hole; 832, positioning plate; 8321, positioning plate hole; 84, slide rail slider assembly; 85, bottom plate; 851, bottom plate hole; 86, bottom plate positioning assembly; 861, positioning rod; 862, paddle; 863, reset spring; 87, longitudinal fixing block. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the present invention, but the protection scope of the present invention is not limited to the following specific embodiments.

[0019] like Figure 1-7As shown, the present invention discloses a mowing and weeding device for farmland canals, comprising a frame 1, a mowing device 4 mounted on the frame 1, and a weeding chain device 3. The frame 1 is provided with a hanging ear 5, which is a universal structure and is provided with a connecting hole for adapting to a machine running above the farmland canal, so as to facilitate disassembly and replacement. The weeding chain device 3 is arranged behind the mowing device 4 in the forward direction, and the weeding chain device 3 comprises a conveying chain assembly 31, and a weeding spring tooth 312 is provided on the chain 311 of the conveying chain assembly 31 for conveying weeds cut by the mowing device 4 to the outside of the canal. The mowing and weeding device of the present invention can be detachably adapted to different walking devices through the hanging ears 5, and has strong versatility. After the weeds are cut by the mowing device 4, the cut weeds are transported to the outside of the canal through the weeding spring teeth 312 on the rear weeding chain device 3, thereby avoiding the problem that the cut weeds remain on the canal wall and are difficult to be discharged, realizing the integrated operation of weeding and transporting the canal wall weeds, and improving the weed cleaning efficiency of the farmland canal wall.

[0020] In the present embodiment, the weed-pulling chain device 3 further comprises a sprocket frame 32 and a driving sprocket 33, a driven sprocket 34 and a tensioning sprocket 35 mounted on the sprocket frame 32 and cooperating with the chain 311. The tensioning sprocket 35 is mounted on a tensioning frame, and the tensioning frame is retractable (specifically, it can be positioned by sleeved telescopic tubes and bolts, or by connecting the tensioning frame with different connecting holes on the sprocket frame 32). A spring tooth mounting plate 313 is mounted on the chain 311, and the weed-pulling spring teeth 312 are mounted on the spring tooth mounting plate 313. The chain 311 comprises a grass-collecting chain segment 314 arranged on both sides of the tensioning sprocket 35 for conveying the cut weeds to the channel wall and a weed-pulling chain segment 315 for conveying the weeds conveyed to the channel wall outward along the channel wall. That is, the lower chain 311 is divided into two by the tensioning sprocket 35, and the grass collecting chain segment 314 and the grass pulling chain segment 315 form an angle. The size of the angle can be adjusted by adjusting the tensioning sprocket 35 up and down, and the length of the grass collecting chain segment 314 and the grass pulling chain segment 315 can be adjusted by adjusting the tensioning sprocket 35 left and right, so as to adjust the degree of adaptability to the canal wall. When working, the grass pulling chain segment 315 fits the canal wall on one side of the canal, and the grass collecting chain segment 314 is used to continuously transport the cut weeds in the canal to the canal wall on one side. After the weeds reach the canal wall, they are transported upward by the grass pulling chain segment 315 to the bank on one side of the canal.

[0021] In this embodiment, see Figure 1 and 2In order to make the grass-pushing tooth 312 elastic, the grass-pushing tooth 312 includes an integrally formed torsion spring portion 3121 and a grass-pushing rod 3122. The grass-pushing rod 3122 extends tangentially along the outer edge of the torsion spring portion 3121. The torsion spring portion 3121 is a torsion spring structure. One end of the torsion spring portion 3121 is fixedly connected to the spring tooth mounting plate 313, and the other end is fixedly connected to the grass-pushing rod 3122. The grass-pushing rod 3122 is perpendicular to the conveying surface of the chain 311, and the grass-pushing rod 3122 can pick up weeds. By arranging the torsion spring portion 3121 at the end of the grass-pushing rod 3122, the grass-pushing rod 3122 can be prevented from bending and deforming when encountering a large resistance, thereby facilitating the torsion spring portion 3121 to store elastic potential energy, making it convenient for the subsequent grass-pushing rod 3122 to eject the weeds out of the water channel. At the same time, the grass-pushing rod 3122 can also be protected from breaking.

[0022] In the present embodiment, in order to facilitate the installation and fixation of the grass-clearing tooth 312, the grass-clearing tooth 312 includes two sets of torsion spring parts 3121 and a grass-clearing rod 3122 that are integrally formed and symmetrically arranged, and an arc-shaped connecting rod 3123 is formed between the two sets of torsion spring parts 3121. The arc-shaped connecting rod 3123 is pressed against the tooth mounting plate 313. Specifically, the arc-shaped connecting rod 3123 matches the outer edge of fasteners such as locking bolts 36, and is pressed and fixed on the tooth mounting plate 313 by the locking bolts 36.

[0023] In this embodiment, in order to ensure the stable installation of the spring tooth mounting plate 313, the setting length of the spring tooth mounting plate 313 is further extended, and then more grass-pulling spring teeth 312 are set on the spring tooth mounting plate 313, so as to improve the collection and transportation effect of the weeds after cutting. The conveying chain assembly 31 is composed of two groups arranged opposite to each other, and the two ends of the spring tooth mounting plate 313 are respectively fixedly connected to the chain 311 of the conveying chain assembly 31, specifically, fixedly connected to the chain plates on both sides of the chain, and the grass-pulling spring teeth 312 are evenly distributed along the forward direction of the mowing device 4; a profiling wheel 2 is provided below the frame 1, and when the profiling wheel 2 is in contact with the channel wall, the grass-pulling spring teeth 312 on the grass-pulling chain segment 315 are elastically compressed and in contact with the channel bottom. On the one hand, the contoured wheel 2 can play a role of isolation and protection, avoiding large friction and collision between the mowing device 4 and the weed-pulling chain device 3 and the canal wall. On the other hand, it can ensure that the weed-pulling spring teeth 312 are elastically compressed and fit to the bottom of the canal, and the ends of the weed-pulling spring teeth 312 are elastically deformed to accumulate elastic potential energy. When the weed-pulling chain segment 315 is reached, the weed-pulling spring teeth 312 return to their original shape, and the elastic potential energy is released to throw the weeds onto the canal.

[0024] In this embodiment, see Figure 4The mowing device 4 includes a cutting blade frame 41, a moving blade group 42, a fixed blade group 43 and a crank connecting rod mechanism 44. The fixed blade group 43 is installed on the cutting blade frame 41. The moving blade group 42 cooperates with the fixed blade group 43 and reciprocates and slides with the cutting blade frame 41. The output shaft of the hydraulic motor assembly 8 is connected to the crank 441 of the crank connecting rod mechanism 44. The moving blade group 42 is connected to the connecting rod 442 of the crank connecting rod mechanism 44. The length of the connecting rod 442 is adjustable to control the cutting amplitude of the moving blade group 42. Specifically, in the present embodiment, a pointed tip is provided at the front of any fixed knife 431 of the fixed knife group 43, so as to facilitate insertion into the gap between weeds, and a fixed knife groove 432 is provided inside to cooperate with the movable knife 421 of the movable knife group 42. The lower side of the fixed knife groove 432 of the fixed knife 431 is fixedly connected to the cutting knife frame 41, and the upper side is suspended, so as to ensure that the fixed knife 431 maintains a certain elasticity when cooperating with the movable knife 421 for cutting. The movable knife 421 is a triangular structure, and grooves 422 are provided on the cutting edges inclined on both sides, so as to improve the cutting efficiency.

[0025] In this embodiment, see Figure 5-7, and also includes a hydraulic motor assembly 8 that drives the driving sprocket 33 and the crank 441, that is, they share a prime mover, and power distribution is achieved through a reducer and gears in the middle. The hydraulic motor assembly 8 includes a hydraulic motor 81, a quick locking bolt 82 and a base 83 that can be connected to different accessories. The base 83 is a universal base, and the base 83 is an L-shaped structure. A mounting side plate 831 is provided on one side, and a side plate connecting hole 8311 connected to the motor mounting hole 811 of the hydraulic motor 81 is provided on the mounting side plate 831. A motor output shaft extension hole 8312 is provided at the center of the mounting side plate 831, and the output shaft of the hydraulic motor 81 Extending from the motor output shaft extension hole 8312, and cooperating with the gear, coupling, cam and other transmission parts on the attachment, the quick locking bolt 82 includes a handle nut 821, a locking plate 822, a locking plate driving rod 823, and a bolt rod 824 that can be inserted into the motor mounting hole 811 and the side plate connecting hole 8311. The handle nut 821 is threadedly connected to the outer wall of one end of the bolt rod 824, the locking plate driving rod 823 is slidably connected to the inner hole 8241 of the bolt rod 824, and the locking plate 822 is hinged to the side wall hole 8242 at the other end of the bolt rod 824 and is driven to rotate in and out of the side wall hole 8242 by the locking plate driving rod 823. Thus, it plays a limiting role, and then cooperates with the handle nut 821 to lock, and the hydraulic motor 81 is installed and fixed on the mounting side plate 831. When the bolt rod 824 of the present invention is inserted into the motor mounting hole 811 and the side plate connecting hole 8311, the locking plate 822 rotates inward. After being inserted into the motor mounting hole 811 and the side plate connecting hole 8311, the locking plate 822 rotates outward, driving the handle nut 821 to rotate, thereby reducing the distance between the handle nut 821 and the locking plate 822, and then the hydraulic motor 81 is firmly installed on the mounting side plate 831. The entire process only requires manual tightening, which is fast and efficient. At the same time, it also avoids the problem of hydraulic oil leakage caused by disassembling the hydraulic pipeline, avoids the waste of hydraulic oil and pollution of farmland water channels. Further, by disassembling the hydraulic motor 81, the hydraulic motor 81 can be used universally on different accessories.

[0026] In this embodiment, in order to facilitate pressing the locking plate driving rod 823, the quick locking bolt 82 also includes a bolt handle 825 connected to one end of the bolt rod 824, and the bolt handle 825 includes an index finger hook plate 8251 and a middle finger hook plate 8252 arranged on both sides to cooperate with the index finger and the middle finger respectively. The index finger hook plate 8251 and the middle finger hook plate 8252 are C-shaped structures, which are ergonomic and convenient for pressing the locking plate driving rod 823 downward to immerse the locking plate 822 into the side wall hole 8242.

[0027] In this embodiment, the locking plate 822 includes a locking paddle 8221 and a locking wing 8222 which are vertically integrated. The locking paddle 8221 and the locking wing 8222 are L-shaped as a whole. The locking wing 8222 is hinged to the side wall hole 8242. The other end of the locking plate driving rod 823 is provided with a convex ring 8231 for driving the locking paddle 8221 to reciprocate. When the convex ring 8231 moves downward, the locking wing 8222 is driven to swing inward, and then into the side wall hole 8242, so that the bolt rod 824 can be inserted into the motor mounting hole 811 and the side plate connecting hole 8311. When the convex ring 8231 moves upward, the locking wing 8222 is driven to swing outward, and then outside the side wall hole 8242, so that there is space for the locking wing 8222 and the handle nut 821 to limit the travel.

[0028] In this embodiment, see Figure 7 In order to make the locking wing 8222 automatically pop out, the quick locking bolt 82 also includes a locking spring 826 disposed in the inner hole 8241 of the bolt rod 824. One end of the locking spring 826 abuts against the bottom of the inner hole 8241, and the other end abuts against the convex ring 8231 to keep the end of the locking wing 8222 protruding from the side wall hole 8242. The locking wing 8222 can then be clamped against the outer edge of the pressure motor mounting hole 811, playing a role of connection and limiting. During operation, the locking plate driving rod 823 is pressed downward to drive the locking paddle 8221, the locking spring 826 contracts, and the locking wing 8222 rotates counterclockwise to enter the side wall hole 8242, so that the bolt rod 824 can be inserted into the motor mounting hole 811 and the side plate connecting hole 8311. After insertion and positioning, the bolt handle 825 is released, and the convex ring 8231 moves upward under the drive of the locking spring 826, and the locking wing 8222 rotates clockwise to extend out of the side wall hole 8242 to form a limiting step structure. At this time, the handle nut 821 can be rotated to lock.

[0029] In this embodiment, in order to make the handle nut 821 a labor-saving structure and facilitate manual locking of the hydraulic motor 81, the handle nut 821 includes a nut body 8211 and a plurality of rotating rods 8212 arranged axially along the nut body 8211, one end of each rotating rod 8212 is fixedly connected to the nut body 8211, and the other end extends radially outward along the nut body 8211, forming a scattered shape structure, similar to the labor-saving structure of a sailing steering wheel.

[0030] In this embodiment, a slide rail slider assembly 84 and a bottom plate 85 mounted on the slide rail slider assembly 84 are also installed on the base 83. The hydraulic motor 81 is installed on the bottom plate 85. The sliding direction of the bottom plate 85 is parallel to the axis of the motor output shaft extension hole 8312. Therefore, the hydraulic motor 81 can be pre-installed outside the motor output shaft extension hole 8312 to avoid the high difficulty and low efficiency of manual centering. After pre-installation, it can be pushed toward the motor output shaft extension hole 8312 to reach the pre-positioned position. In this embodiment, a positioning plate 832 is provided on one side of the mounting side plate 831. A plurality of bottom plate positioning assemblies 86 are installed on the positioning plate 832. The bottom plate positioning assemblies 86 include a positioning rod 861 that is slidably connected to the positioning plate hole 8321 of the positioning plate 832. The positioning rod 861 matches the bottom plate hole 851 on the bottom plate 85. Therefore, the hydraulic motor 81 is pre-positioned, which is convenient for the subsequent fast locking bolt 82 to be locked.

[0031] In this embodiment, in order to improve the efficiency of pre-positioning, the bottom plate positioning assembly 86 further includes a lever 862 and a return spring 863. The lever 862 is connected to the bottom of the positioning rod 861. One end of the return spring 863 is connected to the positioning plate 832, and the other end is connected to the lever 862. Thus, the positioning rod 861 can realize the function of automatic reset. When working, the lever 862 is pulled downward, and the positioning rod 861 withdraws from the bottom plate hole 851. At this time, the bottom plate 85 can be withdrawn. After the lever 862 is released, the positioning rod 861 is reset upward under the action of the spring.

[0032] In this embodiment, in order to improve the efficiency of pre-installing the hydraulic motor 81 outside the motor output shaft extension hole 8312, a longitudinal fixing block 87 is also included. The longitudinal fixing block 87 is installed on the bottom plate 85. The longitudinal fixing block 87 is provided with a plug-in cavity matching the shape of the hydraulic motor 81. When the hydraulic motor 81 is inserted into the plug-in cavity, the output shaft of the hydraulic motor 81 can be aligned with the motor output shaft extension hole 8312.

[0033] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A weeding device for farmland canals, characterized in that: The invention comprises a frame (1), a mowing device (4) and a weed-pulling chain device (3) mounted on the frame (1); the frame (1) is provided with a hanging ear (5); the weed-pulling chain device (3) is arranged behind the mowing device (4) in the forward direction; the weed-pulling chain device (3) comprises a conveying chain assembly (31); and a chain (311) of the conveying chain assembly (31) is provided with weed-pulling spring teeth (312) for conveying weeds cut by the mowing device (4) to the outside of a water channel.

2. The weed cutting and weeding device for farmland canals according to claim 1, characterized in that: The weed-pulling chain device (3) further comprises a sprocket frame (32) and a driving sprocket (33), a driven sprocket (34) and a tensioning sprocket (35) mounted on the sprocket frame (32) and cooperating with the chain (311); a spring tooth mounting plate (313) is mounted on the chain (311); the weed-pulling spring teeth (312) are mounted on the spring tooth mounting plate (313); the chain (311) comprises a grass-collecting chain segment (314) arranged on both sides of the tensioning sprocket (35) and used for conveying the cut weeds to the canal wall; and a weed-pulling chain segment (315) used for conveying the weeds conveyed to the canal wall outward along the canal wall.

3. The weed cutting and weeding device for farmland canals according to claim 2, characterized in that: The grass-moving spring tooth (312) comprises a torsion spring portion (3121) and a grass-moving rod (3122); one end of the torsion spring portion (3121) is fixedly connected to the spring tooth mounting plate (313), and the other end is fixedly connected to the grass-moving rod (3122); the grass-moving rod (3122) is perpendicular to the conveying surface of the chain (311).

4. The weed cutting and weeding device for farmland canals according to claim 3, characterized in that: The grass-moving spring tooth (312) comprises two groups of torsion spring parts (3121) and a grass-moving rod (3122) that are integrally formed and symmetrically arranged, and an arc-shaped connecting rod (3123) is formed between the two groups of torsion spring parts (3121), and the arc-shaped connecting rod (3123) is pressed against the spring tooth mounting plate (313).

5. The weed cutting and weeding device for farmland canals according to claim 2, characterized in that: The conveyor chain assembly (31) is composed of two groups arranged opposite to each other, the two ends of the spring tooth mounting plate (313) are respectively fixedly connected to a chain (311) of the conveyor chain assembly (31), and the grass-moving spring teeth (312) are evenly distributed along the forward direction of the mowing device (4); a contour wheel (2) is arranged below the frame (1), and when the contour wheel (2) is in contact with the channel wall, the grass-moving spring teeth (312) on the grass-moving chain segment (315) are elastically compressed and in contact with the channel bottom.

6. The weed cutting and weeding device for farmland canals according to any one of claims 2 to 5, characterized in that: The mowing device (4) comprises a cutting blade frame (41), a moving blade group (42), a fixed blade group (43) and a crank connecting rod mechanism (44); the fixed blade group (43) is mounted on the cutting blade frame (41); the moving blade group (42) cooperates with the fixed blade group (43) and is in reciprocating sliding connection with the cutting blade frame (41); the moving blade group (42) is connected to a connecting rod (442) of the crank connecting rod mechanism (44).

7. The weed cutting and weeding device for farmland water channel according to claim 6, characterized in that: A pointed tip is provided at the front of any fixed knife (431) of the fixed knife group (43), and a fixed knife groove (432) is provided inside the fixed knife group (42) for matching with the movable knife (421) of the movable knife group (42); the lower side of the fixed knife groove (432) of the fixed knife (431) is fixedly connected to the cutting knife frame (41), and the upper side is suspended; and grooves (422) are provided on the cutting edges arranged obliquely on both sides of the movable knife (421).

8. The weed cutting and weeding device for farmland water channel according to claim 6, characterized in that: The invention also comprises a hydraulic motor assembly (8) for driving the driving sprocket (33) and the crank (441), wherein the hydraulic motor assembly (8) comprises a hydraulic motor (81), a quick-locking bolt (82) and a base (83) mounted on the frame (1), wherein the base (83) is provided with a mounting side plate (831), wherein the mounting side plate (831) is provided with a side plate connecting hole (8311) connected to a motor mounting hole (811) of the hydraulic motor (81), wherein a motor output shaft extension hole (8312) is provided at the center of the mounting side plate (831), and the quick-locking bolt (82) comprises A handle nut (821), a locking plate (822), a locking plate driving rod (823), and a bolt rod (824) that can be inserted into the motor mounting hole (811) and the side plate connecting hole (8311), wherein the handle nut (821) is threadedly connected to the outer wall of one end of the bolt rod (824), the locking plate driving rod (823) is slidably connected to the inner hole (8241) of the bolt rod (824), and the locking plate (822) is hingedly connected to the side wall hole (8242) at the other end of the bolt rod (824) and is driven by the locking plate driving rod (823) to rotate in and out of the side wall hole (8242).

9. The weed cutting and weeding device for farmland canals according to claim 8, characterized in that: The quick-locking bolt (82) further comprises a bolt handle (825) connected to one end of the bolt rod (824), the bolt handle (825) comprising an index finger hook plate (8251) and a middle finger hook plate (8252) arranged on both sides to respectively cooperate with the index finger and the middle finger.

10. The weed cutting and weeding device for farmland water channel according to claim 8, characterized in that: The locking plate (822) includes a locking paddle (8221) and a locking wing (8222) which are vertically integrated, the locking wing (8222) being hinged to the side wall hole (8242), the other end of the locking plate driving rod (823) being provided with a convex ring (8231) for driving the locking paddle (8221) to reciprocate, the quick locking bolt (82) further including a locking spring (826) arranged in the inner hole (8241) of the bolt rod (824), one end of the locking spring (826) abutting against the bottom of the inner hole (8241), and the other end abutting against the convex ring (8231) so that the end of the locking wing (8222) keeps a tendency to be exposed from the side wall hole (8242).

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