CN113039880A - Weeding mechanism of weeder - Google Patents

Abstract

The invention relates to the technical field of agricultural equipment, in particular to a weeding mechanism of a weeding machine. The weeding machine comprises a grass rolling system, wherein the grass rolling system comprises a main beam, a mounting bracket, a roller assembly and a grass rolling system dismounting device, the main beam is arranged at the front side of a weeding mechanism, the mounting bracket is vertically arranged and fixed on the main beam through the grass rolling system dismounting device, and the roller assembly is fixed at the lower end of the mounting bracket; the grass raking system comprises a connecting support, a mounting beam, a hanging plate, a weeding rake, a hanging beam connecting seat assembly, a pressing plate assembly C and a mounting beam parallel arrangement, wherein the main beam is arranged at the rear side of the main beam, the connecting support passes through the pressing plate assembly C, the hanging beam connecting seat assembly is respectively connected with the main beam and the mounting beam, the hanging plate is fixed on the mounting beam, the hanging plate is vertically arranged, the weeding rake is fixed at the lower part of the hanging plate, and the weeding rake and the roller assemblies are arranged at intervals. The weeding mechanism has high weeding efficiency and good weeding effect, and meets the production requirements of large-area planting farmers.

Description

Weeding mechanism of weeder

Technical Field

The invention relates to the technical field of agricultural equipment, in particular to a weeding mechanism of a weeding machine.

Background

The rice has a cultivation history of 7,000 years in China, and 2 hundred million and more tons of rice are produced in the first year of the world. However, the environment of the rice field is greatly beneficial to the propagation and growth of weeds, and the domestic rice field has various weeds and higher growth density, thereby causing great threat to the safe production of rice and reducing the yield of the rice by 15-30%.

At present, domestic weeding machines mainly comprise small-sized hand-held cultivator, the cultivator can work only by hands of workers, the efficiency is very low, the seedling rolling phenomenon is easy to cause during turning, and the weeding requirements of farmers with large planting areas cannot be met, so most of the farmers select chemical herbicides to weed.

In a new era of advocating green ecology, the use of chemical herbicides is running counter to the environmental protection. In the using process, the soil and water sources can be polluted, and a large number of non-target organisms can be killed, so that natural enemies of pests and other beneficial animals die; moreover, chemical herbicides in plants can be transported through the food chain step by step and accumulate continuously, which poses potential threats to humans and animals. Chemical weeding is driven to move toward mechanical weeding for various reasons, and the weeding has obvious effects on protecting cultivation development, increasing crop yield and improving crop quality.

Disclosure of Invention

In order to solve the problems of environmental pollution and secondary pollution caused by chemical weeding and low weeding efficiency of the conventional weeding machine, the invention aims to provide a weeding mechanism of the weeding machine, which has high weeding efficiency and good weeding effect, can meet the production requirements of large-area planting farmers and has high economical efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

the weeding mechanism of the weeding machine comprises

The grass rolling system comprises a main beam, mounting brackets, roller assemblies and a grass rolling system dismounting device, wherein the main beam is arranged in front of the weeding mechanism, a plurality of groups of the mounting brackets are vertically arranged and fixed on the main beam through the grass rolling system dismounting device, and the roller assemblies are fixed at the lower ends of the mounting brackets;

the grass raking system comprises a connecting support, a mounting beam, a hanging plate, a grass rake, a hanging beam connecting seat assembly and a pressing plate assembly C, wherein the mounting beam is arranged on the rear side of the main beam in parallel, the connecting support passes through the pressing plate assembly C, the hanging beam connecting seat assembly is respectively connected with the main beam and the mounting beam, a plurality of groups of hanging plates are fixed on the mounting beam, the hanging plates are vertically arranged, the grass rake is fixed on the lower portion of the hanging plates, and the grass rake and the rolling wheel assembly are arranged at intervals.

Further, weeding mechanism of weeder uses the tire of walking portion as the gyro wheel, is located and is equipped with vice kickboard subassembly on the tire orbit of marcing, wheel components includes long wheel components, short wheel components and central wheel components, central wheel components fixes girder middle part rear side, the front side of central wheel components is equipped with central kickboard, central kickboard is fixed at mount subassembly downside, on the girder, divide the rank the both sides of central wheel components connect gradually long wheel components, vice kickboard subassembly and short wheel components.

Furthermore, the central roller assembly comprises a plurality of groups of long rollers arranged in the advancing direction, the long roller assembly comprises a plurality of groups of long rollers arranged in the advancing direction, the short roller assembly comprises a plurality of groups of short rollers arranged in the advancing direction, the long rollers and the short rollers are formed by a group of blades annularly arranged around the axes of the long rollers and the short rollers, the front parts of the blades are bent clockwise and provided with tips, the short rollers are uniformly distributed at intervals by single blades and short double blades, and the long rollers are uniformly distributed at intervals by long double blades and three blades.

Furthermore, one or more groups of long roller assemblies are arranged between the auxiliary floating plate assembly and the short roller assemblies.

Further, the installation roof beam is including parallel arrangement's first installation roof beam, second installation roof beam and third installation roof beam in proper order, the weeding harrow is vertically provided with two sets ofly around, two sets of weeding harrows around two lines in the middle are fixed respectively on second installation roof beam and third installation roof beam, and two sets of weeding harrows around all the other multirow are fixed respectively on first installation roof beam and second installation roof beam.

Furthermore, the weeding harrow comprises a positioning frame and harrow teeth, wherein the positioning frame is fixed on the lower portion of the hanging plate, a plurality of arc-shaped harrow teeth are symmetrically arranged on two sides of the positioning frame, one end of each harrow tooth is fixed on the positioning frame, the other end of each harrow tooth is in arc-shaped horn mouth transition, and the harrow teeth on two sides are contacted with the end portions.

Further, the roller grass system dismounting device comprises

The pressing plate component A comprises a pressing plate A;

the pressing plate component B comprises a pressing plate B, a bottom plate and a cover plate, the pressing plate A and the pressing plate B are respectively provided with two sides of a main beam and clamp the main beam, the bottom plate and the cover plate are fixed on the back side of the pressing plate B and are surrounded with the pressing plate B to form a mounting groove matched with the mounting bracket for supplying the mounting bracket to penetrate through.

Furthermore, a group of through holes A are symmetrically formed in the bottom plate and the cover plate, a plurality of through holes B are longitudinally formed in the top of the mounting support, the mounting support is arranged between the bottom plate and the cover plate in a penetrating mode, and the through holes B are aligned with the through holes A and fastened through fasteners.

Further, the connecting plate B is vertically arranged on the mounting beam, the hanging beam connecting seat assembly comprises a connecting seat, a bolt, a nut and a handle bolt assembly, the connecting seat is integrally square, rectangular grooves for the connecting plate B and the connecting support to penetrate are respectively formed in two adjacent side faces of the connecting seat, three pairs of nut bolts are respectively arranged on three adjacent side faces of the connecting seat, and the handle bolt assembly is located on one side face where the rectangular grooves are not formed.

Further, the pressing plate component C comprises a pressing plate C and a connecting plate A, the connecting plate A is fixed on the back side of the pressing plate C, and through holes matched with the through holes in the connecting support are formed in the connecting plate A.

By adopting the technical scheme, the invention has the beneficial effects that: 1) The rolling grass system advances through the roller, presses weeds into sludge, or drives the sludge to cover the weeds when the roller advances, and the grass raking system drags the weeds through rake teeth of the weeding rake to loosen root systems of the weeds, so that the weeds are thoroughly cleared; 2) the weeding mechanism can realize multi-row weeding simultaneously, meets the production requirements of large-area planting farmers, protects the ecological environment and improves the economic benefit; 3) weeding mechanism girder and installing support pass through grass rolling system dismouting device fixed connection, and linking bridge and girder pass through clamp plate subassembly C fixed connection, and linking bridge and installing beam pass through string roof beam connecting seat subassembly fixed connection, grass rolling system dismouting device, clamp plate subassembly C, string roof beam connecting seat subassembly simple structure, the dismouting is convenient.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a 7-row weeding and weeding system according to the invention;

FIG. 3 is a schematic view of a 9-row weeding system according to the present invention;

FIG. 4 is a schematic view of a 7-row weeding and raking system according to the present invention;

FIGS. 5 and 6 are schematic views of a short roller and a long roller according to the present invention;

FIG. 7 is a schematic view of a rake according to the present invention;

FIGS. 8 and 9 are schematic views of the device for assembling and disassembling the roller grass system according to the present invention;

fig. 10, 11 and 12 are schematic views of the grass raking system dismounting device of the invention.

Detailed Description

In order to make the technical solutions of the present invention more clear to those skilled in the art, the present invention will now be described in further detail with reference to the accompanying drawings.

Example 1

In the description of the present invention, it should be noted that the terms "front", "rear", "upper", "lower", "inner", "outer", "lateral", "vertical", "longitudinal", and the like indicate orientations or positional relationships corresponding to the traveling direction of the weeding machine, and are only for convenience of description and simplification of description, and thus, are not to be construed as limiting the present invention.

The weeding mechanism comprises a rolling grass system and a rake system, wherein the rolling grass system performs inter-row weeding, and the rake system performs inter-plant weeding.

As shown in fig. 2, the weeding machine is 7 rows, and the traveling part 1 for 2 nd and 6 th rows uses the tire 12 as a roller, the grass rolling system includes a main beam 61, a connecting frame, a mounting bracket 67, a central roller assembly 63, a long roller assembly 64, an auxiliary floating plate assembly 65, and a short roller assembly 66, the main beam 61 is fixed at the rear side of the fixing bracket assembly 3, the connecting frame is fixed at the back side of the middle part of the main beam 61 and surrounds the main beam 61 into a mouth shape, the mounting bracket 67 is vertically fixed at the side of the connecting frame far away from the main beam 61, the central roller assembly 63 is fixed at the lower end of the mounting bracket 67, a central floating plate 69 is arranged at the front side of the central roller assembly 63, and the central floating plate 69 is fixed at the lower side of the fixing bracket. A plurality of groups of mounting brackets 67 are vertically fixed on the main beam 61, are positioned at the lower ends of the mounting brackets 67, are arranged on two sides of the central floating plate 69, are sequentially fixed with a long roller assembly 64, an auxiliary floating plate assembly 65 and a short roller assembly 66, and the auxiliary floating plate assembly 65 is positioned on the traveling track of the tire 12.

As shown in fig. 5 and 6, the roller assemblies are divided into a long roller assembly 64, a short roller assembly 66 and a central roller assembly 63, the central roller assembly 63 includes multiple groups of long rollers arranged in the advancing direction, the long roller assembly 64 includes multiple groups of long rollers arranged in the advancing direction, the short roller assembly 66 includes multiple groups of short rollers arranged in the advancing direction, the long rollers and the short rollers are formed by a group of blades annularly arranged around the axis of the long rollers and the short rollers, the front portions of the blades are bent in the clockwise direction and provided with tips, the short rollers are uniformly spaced by a single blade 661 and a short double blade 662, and the long rollers are uniformly spaced by a long double blade 641 and a three blade 642.

As shown in fig. 4, the rake system comprises a connecting bracket 71, a mounting beam, a hanging plate 752, a rake 753, the mounting beams are arranged at the rear side of the main beam 61 in parallel, two connecting brackets 71 which are arranged perpendicular to the main beam are connected with the main beam 61 and the mounting beams, the hanging plate 752 is fixed on the mounting beam, the hanging plate 752 is vertically arranged, the weeding harrow 753 is fixed at the lower end of the hanging plate 752, the weeding harrow 753 is longitudinally positioned between the adjacent roller assemblies and is longitudinally provided with two groups, the mounting beams comprise a first mounting beam 731, a second mounting beam 741 and a third mounting beam 751 which are arranged in parallel and connected by the connecting bracket 71, the inter-plant rake rows of the weeding machine are 6 rows, the front and rear groups of rake 753 in the middle two rows are respectively fixed on the second mounting beam 741 and the third mounting beam 751, the other four rows of front and rear groups of weeding harrows 753 are respectively fixed on the first mounting beam 731 and the second mounting beam 741.

As shown in fig. 7, the weeding harrow comprises a positioning frame 7531 and harrow teeth 7532, wherein the positioning frame 7531 is fan-shaped and fixed at the lower part of a hanging plate 752, six harrow teeth 7532 are symmetrically arranged at two sides, the harrow teeth 7532 are arc-shaped, one end of each harrow tooth is connected with the positioning frame 7531, the other end of each harrow tooth adopts arc-shaped bell-mouth arc transition, and the harrow teeth 7532 at two sides touch at the end parts. The six rake teeth 7532 are made of 65Mn materials, and are subjected to heat treatment to achieve certain toughness and rigidity, so that the rake teeth have elastic structures and are not easy to damage, the tail ends of the rake teeth adopt arc transition of arc-shaped bellmouths, the bellmouth arc transition enables the bellmouth arc to contact rice seedlings in a point-to-point mode, and the opening elasticity is small, so that the seedling injury phenomenon is reduced, and the seedling injury rate is smaller than 5%; the arc shape can increase and contact the area of sliding between soil, through the upper and lower position of adjusting the weeding rake teeth to adjust the dynamics of effect between weeding rake teeth and soil, thereby improve weeding operating efficiency.

The intensity of weeding operation can be adjusted by adjusting the up-and-down position of the inner-measuring harrow teeth 7532, the inter-plant weeding parts cross two sides of a seedling row when the machine works, weeds, pulls or buries inter-plant weed as the machine moves forward for 6.7 kilometers per hour, and weeding efficiency is about 75%.

In another embodiment, as shown in fig. 3, a set of long roller assemblies 64 is further arranged between the auxiliary floating plate assembly 65 and the short roller assembly 66, and correspondingly, a set of weeding harrows 753 are added outside the grass raking system, and the weeding machine can be upgraded to a 9-row weeding machine.

In yet another embodiment, two sets of long roller assemblies 64 are further arranged between the auxiliary floating plate assembly 65 and the short roller assembly 66, and correspondingly, two sets of weeding harrows 753 are added outside the grass raking system, and the weeding machine can be upgraded to an 11-row weeding machine.

The weeding mechanism further comprises a roller system dismounting device for fixing a mounting bracket 67 connected with a roller assembly or a floating plate assembly on the main beam 61.

As shown in fig. 8 and 9, the dismounting device of the grass rolling system comprises a pressure plate assembly a621 and a pressure plate assembly B622, wherein the pressure plate assembly a621 comprises a pressure plate a, two sides of the pressure plate a are bent to form a concave part matched with the outer surface of the main beam 61, and two sides of the pressure plate a are welded with threaded sleeves 6212; the clamp plate subassembly B622 includes clamp plate B6225, bottom plate 6221, apron 6222, clamp plate B6225 both sides bending type form with girder 61 surface assorted concave part, the both sides welding of clamp plate B6225 has screw thread cover 6212, the welding of apron 6222 one side is at clamp plate B6225 dorsal part, bottom plate 6221 is the bent plate that the cross-section is the L type, bottom plate 6221 one end with apron 6222 welded fastening, other end welded fastening are at clamp plate B6225's dorsal part, bottom plate 6221, apron 6222, clamp plate B6225 enclose close form with installing support 67 adaptation is used for supplying the rectangle mounting groove that installing support 67 wore to establish. The pressing plate component A621 and the pressing plate component B622 are respectively arranged on two sides of the main beam 61 and tightly hold the main beam 61 and are matched with the threaded sleeve 6212 through fasteners, and the dismounting device is built.

The top of the long roller assembly 64, the top of the short roller assembly 66, the top of the auxiliary floating plate assembly 65 and the top of the central roller assembly 63 are respectively provided with a mounting bracket 67, the mounting bracket 67 is longitudinally provided with 4 through holes B671, one end of the bottom plate 6221 and one end of the cover plate 6222 are symmetrically provided with through holes a6224, the mounting bracket 67 upwardly penetrates into the mounting groove to enable the fourth longitudinal through hole B671 to be aligned with the through hole a6224, and a pin shaft 624 penetrates through the through hole a6224 and the through hole B671 and then is locked by being clamped with an R-shaped split pin 625 at the tail end. The height of each roller assembly and the height of the sub-floating plate assembly 65 can be adjusted by selecting different through holes B671 arranged in the longitudinal direction on the mounting bracket 67. A welding nut 6223 is arranged on one side, away from the through hole A6224, of the bottom plate 6221, and the mounting bracket 67 is fastened through the cooperation of the bolt 623 and the welding nut 6223.

To disassemble the components, the bolts 623 are loosened by a wrench, the R-shaped cotter pin 625 is removed, and the pin 624 is removed, and the components are separated in sequence.

As shown in fig. 10, 11 and 12, the weeding mechanism further comprises a hanging beam connecting seat assembly 721 and a pressure plate assembly C722, wherein the hanging beam connecting seat assembly 721 is used for fixedly connecting the connecting bracket 71 with the mounting beam, and the pressure plate assembly C722 is used for fixedly connecting the main beam 61 with the connecting bracket 71.

The clamp plate subassembly C722 includes clamp plate C7221, the dorsal side welding of clamp plate C7221 has connecting plate A7223, the through-hole has been seted up at connecting plate A7223 both ends, clamp plate subassembly C722 from the below hold tightly girder 61 and through the fastener with thread bush 6212's cooperation is fixed on girder 61, two sets of clamp plate subassembly C722 is fixed on the girder.

Two connecting supports 71 are distributed on the rear side of the main beam 61, the connecting supports 71 are located on the inner side of the pressing plate component C722, a plurality of through holes are formed in the connecting supports 71, the connecting supports 71 are aligned with the holes in the pressing plate component C722 and are fastened through bolts, and connection of the connecting supports 71 and the main beam 61 is achieved.

Hang beam connecting seat subassembly 721 includes connecting seat 7211, three nut 7212 bolts 7213 and handle bolt subassembly 7214 of group, connecting seat 7211 wholly is squarely, seted up respectively on the adjacent both sides face of connecting seat 7211 and run through the rectangular groove of connecting seat 7211, three pairs of nut 7212 bolts 7213 set up respectively in on the adjacent three side of connecting seat 7211, handle bolt subassembly 7214 is located and has not offered the side in rectangular groove.

The inner weeding harrow component comprises a first mounting beam 731, hanging plates 752 and weeding harrow 753, wherein the first mounting beam 731 is positioned at the outer sides of two mounting brackets 67 and is respectively fixedly provided with two hanging plates 752 in a hanging manner, the bottom end of each hanging plate 752 is fixed with the weeding harrow 753 through an easily-disassembled bolt 754, a connecting plate B76 is also vertically arranged on the first mounting beam 731 close to the mounting bracket 67, the lower side of the connecting plate B76 is inserted into one rectangular groove of a hanging beam connecting seat component 721, a handle bolt component 7214 is rotated, an inner bolt 7213 of the hanging beam connecting seat component 721 is screwed to the bottom and is fastened through a corresponding nut 7212, the mounting bracket 67 penetrates through the other rectangular groove of the hanging beam connecting seat component 721, at the moment, the position of the hanging beam connecting seat component on the mounting bracket 67 is adjusted, so that the first mounting beam 731 is parallel to the weeding part 61, and the position of the inner weeding harrow component is suitable, then the bolts 7213 on the remaining two sides of the hanging beam connecting seat assembly 721 are screwed to the bottom and fastened by corresponding nuts 7212, so that the orthogonal fixation of the first mounting beam 731 and the mounting bracket 67 is realized.

The middle weeding harrow component comprises a second mounting beam 741, hanging plates 752 and weeding harrow 753, the middle weeding harrow component and the inner weeding harrow component are arranged in the same way and are fixed in the same way, and only two groups of weeding harrow 753 are additionally arranged between the two mounting brackets 67.

The outer weeding harrow subassembly contains third installation roof beam 751, link plate 752, weeding harrow 753, outer weeding harrow subassembly sets up the same and fixed mode unanimity with interior weeding harrow subassembly, only includes two sets of weeding harrow 753 that set up between two installing support 67.

The rake system is disassembled in the following way: after the handle of the handle bolt assembly 7214 is rotated anticlockwise and the nuts 7212 and bolts 7213 on the inner side of the hanging beam connecting seat assembly 721 are loosened, the inner, middle and outer weeding harrow assemblies can be taken down respectively. After the nuts 7212 and bolts 7213 on the remaining two sides of the hanging beam connecting seat assembly 721 are loosened, the hanging beam connecting seat assembly 721 can be removed. The mounting bracket 67 can be removed by loosening the bolts 7213 that secure the mounting bracket 67.

The weeding principle of the invention is as follows: weeds are pressed into the silt by the advancing of the rollers, or the silt is driven to cover the weeds to weed when the rollers advance, the height of the roller system can be automatically adjusted by the central floating plate according to the silt, the auxiliary floating plate is used for assisting in adjustment, the rollers at the left end and the right end are narrower than the middle of the roller system, and the phenomenon of seedling rolling is reduced when the high-speed rice transplanter turns; the weeding harrow can drag weeds through the harrow teeth of the weeding harrow to loosen the root system of the weeds so as to achieve the purpose of weeding among plants.

The weeding mechanism can weed in fields of 7-11 rows, and the weeding machine can weed in rows and plants. The weeding efficiency is high, the weeding effect is good, and the weeding requirements of large-area planting farmers can be met, so that chemical herbicides are not needed to be used, green rice can be produced, and the local ecological environment can be protected.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims (10)

1. The weeding mechanism of the weeding machine comprises

The grass rolling system comprises a main beam (61), mounting brackets (67), roller assemblies and a grass rolling system dismounting device, wherein the main beam (61) is arranged at the front side of the weeding mechanism, a plurality of groups of the mounting brackets (67) are vertically arranged and fixed on the main beam (61) through the grass rolling system dismounting device, and the roller assemblies are fixed at the lower ends of the mounting brackets (67);

the grass raking system comprises a connecting support (71), an installation beam, a hanging plate (752), a grass rake (753), a hanging beam connecting seat component (721), a pressing plate component C (722), the installation beam is arranged on the rear side of the main beam (61), the connecting support (71) is connected with the main beam (61) and the installation beam respectively through the pressing plate component C (722), the hanging beam connecting seat component (721) is connected with the main beam (61) and the installation beam, a plurality of groups of the hanging plates (752) are fixed on the installation beam, the hanging plates (752) are vertically arranged, the grass rake (753) is fixed on the lower portion of the hanging plates (752), and the grass rake (753) is arranged at intervals with the roller wheel components.

2. A weeding mechanism for a weeding machine according to claim 1, wherein: the weeding mechanism of weeder uses tire (12) of walking portion (1) as the gyro wheel, is located and is equipped with vice kickboard subassembly (65) on tire (12) the orbit of marcing, the roller subassembly includes long roller subassembly (64), short roller subassembly (66) and central roller subassembly (63), central roller subassembly (63) are fixed girder (61) middle part rear side, the front side of central roller subassembly (63) is equipped with central kickboard (69), central kickboard (69) are fixed in fixed frame subassembly (3) downside, on girder (61), the branch is listed as the both sides of central roller subassembly (63) connect gradually long roller subassembly (64), vice kickboard subassembly (65) and short roller subassembly (66).

3. A weeding mechanism for a weeding machine according to claim 2, wherein: central authorities wheel components (63) contain the long gyro wheel of the multiunit that the advancing direction arranged, long wheel components (64) contain the long gyro wheel of the multiunit that the advancing direction arranged, short wheel components (66) contain the short gyro wheel of the multiunit that the advancing direction arranged, long gyro wheel and short gyro wheel constitute by a set of blade that encircles its axle center and establish, the blade is anterior along clockwise bending and be equipped with most advanced, short gyro wheel is by single vane (661) and short biplate (662) interval equipartition, long gyro wheel is by long biplate (641) and triplate (642) interval equipartition.

4. A weeding mechanism for a weeding machine according to claim 2, wherein: one or more groups of long roller assemblies (64) are also arranged between the auxiliary floating plate assembly (65) and the short roller assemblies (66).

5. A weeding mechanism for a weeding machine according to claim 1, wherein: the mounting beams comprise a first mounting beam (731), a second mounting beam (741) and a third mounting beam (751) which are sequentially arranged in parallel, two groups of weeding harrows (753) are longitudinally arranged in front and at back, the front and back groups of weeding harrows (753) of two middle rows are respectively fixed on the second mounting beam (741) and the third mounting beam (751), and the front and back groups of weeding harrows (753) of the rest multiple rows are respectively fixed on the first mounting beam (731) and the second mounting beam (741).

6. A weeding mechanism for a weeding machine according to any one of claims 1 to 5, wherein: the weeding harrow (753) comprises a positioning frame (7531) and harrow teeth (7532), wherein the positioning frame (7531) is fixed to the lower portion of a hanging plate (752), a plurality of arc-shaped harrow teeth (7532) are symmetrically arranged on two sides of the positioning frame, one end of each harrow tooth (7532) is fixed to the positioning frame (7531), the other end of each harrow tooth adopts an arc-shaped horn mouth for transition, and the harrow teeth (7532) are in contact with the end portions.

7. A weeding mechanism for a weeding machine according to claim 1, wherein: the device for disassembling and assembling the roller grass system comprises

A platen assembly A (621), the platen assembly A (621) comprising a platen A;

pressure plate subassembly B (622), pressure plate subassembly B (622) includes pressure plate B (6225), bottom plate (6221) and apron (6222), pressure plate A and pressure plate B (6225) divide and establish girder (61) both sides and press from both sides tightly girder (61), bottom plate (6221) are fixed with apron (6222) the dorsal part of pressure plate B (6225) and with pressure plate B (6225) enclose close form with installing support (67) adaptation is in order to be used for the confession installing support (67) wears the mounting groove of establishing.

8. A weeding mechanism for a weeding machine according to claim 7, wherein: a group of through holes A (6224) are symmetrically formed in the bottom plate (6221) and the cover plate (6222), a plurality of through holes B (671) are formed in the top of the mounting bracket (67) along the longitudinal direction, the mounting bracket (67) penetrates through the space between the bottom plate (6221) and the cover plate (6222), and any through hole B (671) is aligned to the through hole A (6224) and fastened through a fastener.

9. A weeding mechanism for a weeding machine according to claim 1, wherein: the utility model discloses a bridge structure of hanging, including connecting seat (7211), bolt (7213), nut (7212), handle bolt subassembly (7214), connecting seat (7211) are whole square, the confession has been seted up respectively on the adjacent both sides face of connecting seat (7211) connecting seat B (76) and linking bridge (71) wear to establish the rectangular groove, three pairs of nut (7212) bolt (7213) set up respectively in on the adjacent three side of connecting seat (7211), handle bolt subassembly (7214) are located and have not seted up on the side in rectangular groove.

10. A weeding mechanism for a weeding machine according to claim 1, wherein: the clamp plate assembly C (722) comprises a clamp plate C (7221) and a connecting plate A (7223), the connecting plate A (7223) is fixed on the back side of the clamp plate C (7221), and through holes matched with the through holes in the connecting bracket (71) are formed in the connecting plate A (7223).

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