CN112544137B - Engagement type paddy field weeding machine - Google Patents
Engagement type paddy field weeding machine Download PDFInfo
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- CN112544137B CN112544137B CN202011369947.1A CN202011369947A CN112544137B CN 112544137 B CN112544137 B CN 112544137B CN 202011369947 A CN202011369947 A CN 202011369947A CN 112544137 B CN112544137 B CN 112544137B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B39/00—Other machines specially adapted for working soil on which crops are growing
- A01B39/12—Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture
- A01B39/18—Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture for weeding
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Abstract
A meshed paddy field weeding machine belongs to the technical field of agricultural machinery. The weeding machine comprises a suspension and a plurality of single-row weeding mechanisms arranged along the suspension according to row spacing, wherein each single-row weeding mechanism comprises a single-row support, a left grass removing component, a right grass removing component and a depth limiting floating plate, the left grass removing component and the right grass removing component are arranged on two sides of the single-row support, the front distance and the rear distance of the left grass removing component and the right grass removing component are equal to one row spacing, and the corresponding arc teeth on a weeding disc of the left grass removing component and the corresponding arc teeth on the weeding disc of the right grass removing component are opposite in rotation direction. When the rice seedling transplanting machine works, the arc-shaped teeth on the left and right grass removing discs rotate to enter the plant space, the disc teeth and rice seedlings are in a meshing type, the rice seedlings are positioned at gaps between the arc-shaped teeth of the left and right grass removing discs, and the arc-shaped teeth avoid the rice seedlings from entering the plant space. The upper end parts of the left and right arc-shaped large-tooth combs push down weeds, and the grid bars at the lower ends press and bury the weeds into the soil, so that inter-plant and inter-row weeding is completed.
Description
Technical Field
The invention belongs to the technical field of agricultural machinery, and particularly relates to a meshed paddy field weeding machine.
Background
The weeding in the paddy field comprises artificial weeding, herbicide application, agricultural mechanical weeding and the like. The mechanical weeding technology and equipment in the rice field effectively weed and improve the soil environment for rice growth, have no problem of environmental pollution caused by chemical herbicides, play an important role in controlling weeds in organic rice production, and are the direction of agricultural development. At present, the inter-row mechanical weeding technology and equipment of rice are mature, the inter-plant weeding machines are few, and the problems of high seedling injury rate and low weed removal rate exist.
Disclosure of Invention
Aiming at the technical problems, the invention provides a meshed paddy field weeding machine. The left and right weed removing assemblies which horizontally rotate are electrically driven, the front and back distances of the left and right weed removing assemblies are one plant spacing, and the left and right weed removing assemblies are meshed with rice seedlings, so that the rice seedlings are prevented from entering the plants to bury weeds in a pressing manner, and the inter-plant and inter-row weeding is achieved.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a meshed paddy field weeding machine which comprises a suspension and a plurality of single-row weeding mechanisms arranged along the suspension according to row spacing, wherein each single-row weeding mechanism comprises a single-row support, a left grass removing assembly, a right grass removing assembly and a depth limiting floating plate, wherein the left grass removing assembly and the right grass removing assembly are arranged on two sides of the single-row support, and the front-back distance of the left grass removing assembly and the rear-back distance of the right grass removing assembly are equal to one plant spacing.
Further, the grass subassembly is all removed including motor, motor support, transmission shaft and weeding dish on a left side, the right side, motor leg joint is on the single file support, and the motor passes through the coupling joint transmission shaft, and the grass dish is removed on a left side, the right side in the installation of transmission shaft earthing terminal, the arc tooth that corresponds on the left and right weeding dish is rotatory to opposite.
Further, weeding dish includes weeding inner disc and a plurality of arc tooth, the arc tooth comprises a plurality of big arc tooth combs and little arc tooth, and big arc tooth comb and the even interval setting of little arc tooth are on weeding inner disc circumference, and the upper end is tangent line with weeding inner disc and is connected, and big arc tooth comb sets up a plurality of arc bars along the even interval in arc one side and constitutes.
Furthermore, the tail end connecting line of the grid bar of the large arc-shaped tooth comb forms a horizontal included angle with the horizontal included angle of the connecting line and the tangential direction of the installing edge of the weeding inner discφThe temperature is 40 to 60 degrees.
Furthermore, the radius R of the arc section of the arc-shaped plate of the large arc-shaped tooth comb and the arc-shaped grid bars 1 70 to 90mm and a height H 1 35 to 60mm and the horizontal projection length X of the arc section 1 45 to 70mm, the tail end of the arc grid is a straight section with the length of L 1 15 to 55mm.
Furthermore, the small arc-shaped tooth connecting end arc section radius R 2 60 to 80mm, height H 2 35 to 60mm and the horizontal projection length X of the arc section 2 35 to 50mm, and the tail end of the small arc-shaped tooth is a straight section and is longDegree L 2 10 to 30mm.
Furthermore, the single-row support is formed by connecting a horizontal rod and an inclined support rod, the two sides of the horizontal rod are connected with a left grass removing assembly and a right grass removing assembly, and one end of the horizontal rod is connected to the suspension through a four-rod profiling mechanism and a row spacing adjusting frame; the diagonal brace is positioned on the grounding side, and the end part of the diagonal brace is connected with the depth-limiting floating plate.
Furthermore, the depth-limiting floating plate comprises a depth-limiting lead screw, a lead screw sleeve and a floating plate, the lead screw sleeve is connected to the end of the inclined support rod, the depth-limiting lead screw sleeve is arranged in the lead screw sleeve, and the grounding end of the depth-limiting floating plate is connected with the floating plate; the working front end of the floating plate is an upward bending plate, the lower end face of the floating plate is provided with a plurality of protruding square strips, the working rear end of the floating plate is provided with a plurality of teeth, and mud gushes out from the teeth to cover weeds; reciprocate along the screw housing through the lead screw, drive kickboard altitude mixture control, and then adjust the weeding degree of depth.
Furthermore, the motor support of the left weeding assembly is connected to the single-row support through the plant spacing adjusting frame, and the right weeding assembly is connected to the single-row support through the fixing frame so as to adjust the spacing between the left weeding assembly and the right weeding assembly.
Further, the plant spacing adjusting frame comprises an installation sleeve I sleeved on the horizontal rod of the single-row support, an insertion rod and an installation sleeve II arranged on the motor support, one end of the insertion rod is connected with the installation sleeve I, the other end of the insertion rod penetrates into the installation sleeve II, a locking bolt is arranged on the side face of the installation sleeve, and after adjustment, the plant spacing adjusting frame is fixed through the locking bolt.
The invention has the beneficial effects that:
1. according to the meshed paddy field weeding machine, the single-row weeding mechanisms are arranged along the suspension according to the row spacing, each single-row weeding mechanism comprises a single-row support, a left grass removing assembly, a right grass removing assembly and a depth limiting floating plate, the left grass removing assembly and the right grass removing assembly are arranged on two sides of the single-row support, and the front-back distance of the left grass removing assembly and the front-back distance of the right grass removing assembly are equal to one plant spacing. The left and right grass removing assemblies which are electrically driven to horizontally rotate are arranged, and the front-back distance of the left and right grass removing assemblies is equal to a plant spacing, so that the effect of burying and weeding is achieved.
2. The corresponding arc-shaped teeth on the weeding disks of the left and right weeding assemblies are opposite in rotation direction. And the large arc-shaped comb and the small arc-shaped comb are alternately arranged at equal intervals, and the large arc-shaped comb is formed by uniformly arranging a plurality of arc-shaped grid bars at intervals along one side of the arc-shaped plate. During work, the upper end parts of the left and right arc-shaped large-tooth combs push down weeds, and the lower grid bars press and bury the weeds into soil. Wherein the arrangement of the small arc-shaped teeth aims to completely remove weeds in the missed area of the large arc-shaped teeth comb.
The depth-limiting floating plate is arranged on the single-row support, and the front end of the floating plate is an upward bent plate to prevent the floating plate from being inserted into soil; the lower end surface of the floating plate is provided with a plurality of protruding square strips which are used for pressing grass into mud on one hand and dividing water on the other hand, so that the floating plate is convenient to cling to the mud, and the floating plate is prevented from drifting; the rear end of the floating plate is provided with a plurality of teeth, each tooth presses grass, and soil gushes out between the teeth to cover weeds; the lead screw reciprocates along the lead screw sleeve, drives the floating plate height adjustment, and then adjusts the weeding depth.
4. The row spacing and the plant spacing of the weeding machine are adjustable, and are respectively adjusted through a row spacing adjusting frame connected to the suspension and a plant spacing adjusting frame arranged on the single-row support, so that the weeding machine is suitable for the row spacing and the plant spacing needing weeding.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic view of the structure of the left weeding disk.
Fig. 5 is a top view of fig. 4.
Fig. 6 is a schematic view of the structure of the left weeding disk.
Fig. 7 is a schematic perspective view of fig. 6.
Fig. 8 is a schematic view of a large arc-shaped comb structure according to the present invention.
FIG. 9 is a schematic view of the structure of the small arc-shaped tooth flank of the present invention.
In the figure: 1. the device comprises a suspension, 2 parts of a row spacing adjusting frame, 21 parts of a fixing sleeve, 22 parts of locking bolts, 3 parts of a four-bar copying mechanism, 4 parts of a single-row support, 41 parts of a horizontal bar, 42 parts of an inclined supporting bar, 5 parts of a row spacing adjusting frame, 51 parts of a mounting sleeve I, 52 parts of an inserting bar, 53 parts of a mounting sleeve II, 6 parts of a left motor support, 7 parts of a right motor support, 8 parts of a motor, 9 parts of a gearbox, 10 parts of a coupler, 11 parts of a depth limiting screw rod, 12 parts of a floating plate, 121 parts of a bending plate and 122 parts of a protruding square bar 123 parts, 13 parts of a bearing, 14 parts of a transmission shaft, 15 parts of a flange plate, 16 parts of a right weeding disk, 17 parts of a left weeding disk, 18 parts of a weeding inner disk, 19 parts of a right disk large arc-shaped tooth comb, 20 parts of a right disk small arc-shaped tooth, 21 parts of a left disk large arc-shaped tooth comb, 22 parts of a left disk small arc-shaped tooth, 23 parts of a screw rod sleeve and 24 parts of a fixing frame.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1: as shown in fig. 1-3, the engagement type paddy field weeding machine comprises a suspension 1 and a plurality of single-row weeding mechanisms arranged along the suspension 1 according to row spacing, each single-row weeding mechanism comprises a single-row bracket 4, a left grass removing assembly, a right grass removing assembly and a depth limiting floating plate, wherein the left grass removing assembly and the right grass removing assembly are arranged on two sides of the single-row bracket 4, and the front-back distance of the left grass removing assembly and the right grass removing assembly is one row spacing.
The left and right weeding assemblies comprise a motor 8, a gearbox 9, a motor support, a transmission shaft 14 and a weeding disc, the motor support is a left motor support 6 and a right motor support 7 which are respectively connected on a single-row support 4, the motor 8 is connected with a bearing 13 on the transmission shaft 14 through the gearbox 9 and a coupler 10, the left and right weeding discs are installed at the grounding ends of the transmission shaft 14, and the corresponding arc-shaped teeth on the left and right weeding discs are opposite in rotating direction.
Referring to fig. 2, in order to simultaneously remove weeds between rows and between plants of rice, a left weeding disk 17 and a right weeding disk 16 are arranged in each row, with a plant spacing between them, and the left and right are symmetrical to the row center line. The motors 8 of the left grass removing component and the right grass removing component are respectively connected with a PLC controller, arc-shaped teeth on the left grass removing disc and the right grass removing disc are controlled to rotate to enter plants according to the plant spacing and the advancing speed of a paddy field tractor through the PLC controller, the disc teeth and rice seedlings are in a meshing type, and during work, the rice seedlings are positioned at gaps between the arc-shaped teeth of the left grass removing disc and the arc-shaped teeth of the right grass removing disc, so that the rice seedlings are avoided from removing weeds among the plants.
As shown in fig. 4-7, the left and right weeding disks have the same structure, taking the left weeding disk as an example, the left weeding disk 17 includes an inner weeding disk 18 and a plurality of arc-shaped teeth, the arc-shaped teeth are composed of a plurality of left-disk large arc-shaped teeth combs 21 and left-disk small arc-shaped teeth 22, the large arc-shaped teeth combs 21 and the small arc-shaped teeth 22 are uniformly arranged on the circumference of the inner weeding disk 18 at intervals, and the large arc-shaped teeth combs 21 are composed of a plurality of arc-shaped grid bars uniformly arranged along one side of the arc-shaped plate at intervals.
Referring to fig. 8-9, the right disc large arc-shaped comb 19 and the left disc large arc-shaped comb 21, the right disc small arc-shaped comb 20 and the left disc small arc-shaped comb 22 have opposite rotation directions and correspondingly the same curvature. The upper end parts of the two ends are connected with the weeding inner disc 18 along the tangential direction of the outer edge of the weeding inner disc 18; the horizontal included angle formed by the connecting line of the tail ends of the grid bars of the right disk large arc-shaped tooth comb 19 and the tangential direction of the installing edge of the weeding inner disk 18 isφThe value is 40-60 degrees. The left and right weeding disks have opposite rotation directions, the same rotating speed and the same weeding action process. During working, the upper end parts of the left and right arc-shaped large-tooth combs 19 and 21 push down weeds, and the grid bars at the lower ends press and bury the weeds into soil. Wherein the operation principle of the small arc-shaped teeth is the same as that of the large arc-shaped teeth comb, and the aim is to completely remove weeds in the missed area of the large arc-shaped teeth comb.
Referring to fig. 8, the radius R of the arc section of the arc plate and the arc grid bar of the large arc comb 1 Is 80mm, height H 1 Is 50mm, and the horizontal length X of the circular arc section 1 Is 50mm, the tail end of the arc-shaped grid is a straight section, and the length is L 1 Is 45mm.
Referring to fig. 9, the radius R of the arc section at the front end of the small arc-shaped tooth 2 Is 70mm, height H 2 Is 45mm, and the horizontal length X of the arc segment 2 40mm, the tail end of the small arc-shaped tooth is a straight section with a length L 2 Is 20mm.
The big arc-shaped comb and the small arc-shaped comb are provided with parameters to facilitate grass pushing and pressing.
The single-row bracket 4 is formed by connecting a horizontal rod 41 and an inclined strut 42, the two sides of the horizontal rod 41 are connected with a left grass removing component and a right grass removing component, and one end of the horizontal rod 41 is connected to the suspension 1 through a four-rod profiling mechanism 3 and a row spacing adjusting frame 2; the inclined supporting rod 42 is positioned on the grounding side, and the end part of the inclined supporting rod is connected with the depth-limiting floating plate.
The depth limiting floating plate comprises a depth limiting lead screw 11, a lead screw sleeve 23 and a floating plate 12, the lead screw sleeve is connected to the end of the inclined support rod, the depth limiting lead screw sleeve is arranged in the lead screw sleeve, the grounding end is connected with the floating plate 12, the front working end of the floating plate is an upward bending plate 121, and the floating plate is prevented from being inserted into soil; the lower end face of the floating plate is provided with a plurality of protruding square strips 122 which are used for pressing grass into mud on one hand and dividing water on the other hand, so that the floating plate is convenient to cling to the mud soil, and the floating plate is prevented from drifting; the working rear end of the floating plate is provided with a plurality of teeth 123, each tooth presses grass, and soil gushes out between the teeth to cover weeds; through lead screw 11 along lead screw cover 23 reciprocating, drive kickboard 12 altitude mixture control, and then adjust the weeding degree of depth.
The left motor support 6 of the left weeding assembly is connected to the single-row support 4 through the plant spacing adjusting frame 5, and the right motor support 7 of the right weeding assembly is connected to the single-row support 4 through the fixing frame 24 to adjust the spacing between the left and right weeding assemblies.
Plant spacing alignment jig 5 is including the installation cover II 53 that sets up on installing cover I51, inserted bar 52 and the left motor support 6 of cover on 4 horizontal poles 41 of single file support, inserted bar 52 one end is connected installation cover I51, and in the other end wears to insert installation cover II 53, all be provided with locking bolt in installation cover I51 and the II 53 side of installation cover, adjust the back, through locking bolt fastening.
The fixing frame 24 is formed by inserting an inserting rod arranged on the horizontal rod 41 into a mounting sleeve arranged on the right motor bracket 7.
The row spacing adjusting frame 2 comprises a fixed sleeve 21 and a locking bolt 22 which are sleeved on the suspension 1, the fixed sleeve 21 is connected with the four-rod profiling mechanism, and the fixed sleeve 21 is fixed through the locking bolt after the row spacing is adjusted through the fixed sleeve 21.
Referring to fig. 1-3, when the invention works, the invention is fixed on the rear suspension of the paddy field tractor through the suspension 1, the row spacing adjusting frames 2 on the suspension 1 are adjusted, so that the row spacing of the two adjacent row spacing adjusting frames is the same as the row spacing of paddy field crops to be weeded, the single-row bracket 4 is connected with the row spacing adjusting frames 2 through the parallel four-rod profiling mechanism 4, the plant spacing adjusting frames 5 can realize the front-back position adjustment on the single-row bracket 4, and the floating plate 12 arranged below the single-row bracket is fixed on the inclined strut of the single-row bracket 4 through the depth-limiting screw rod 11; the left motor bracket 6 arranged on the horizontal rod of the single-row bracket 4 and the right motor bracket 7 arranged on the plant spacing adjusting bracket 5 can realize left-right position adjustment; the left and right motor brackets 6 and 7 are respectively provided with a motor 8, a gearbox 9 and a bearing box 13, and the power of the motor 8 is transmitted to a right weed removing disc 16 and a left weed removing disc 17 through the gearbox 9, a coupling 10, a transmission shaft 14 and a flange plate 15, so that the left and right weed removing discs rotate in the same speed and opposite directions.
Example 2: the difference between this example and example 1 is: the tail end connecting line of the grid bar of the large arc-shaped tooth comb and the horizontal included angle between the tail end connecting line and the tangential direction of the installing edge of the weeding inner discφIs 40 deg.. The arc-shaped plate of the large arc-shaped comb teeth and the arc-shaped section radius R1 of the arc-shaped grid bars are 70mm, the height H1 is 35mm, the horizontal length X1 of the arc-shaped section is 45mm, the tail ends of the arc-shaped grid bars are straight sections, and the length L1 is 15mm. Little arc tooth connection end circular arc section radius R2 is 60mm, and height H2 is 35mm, and circular arc section horizontal length X2 is 35mm, and little arc tooth is terminal for straight section, and length L2 is 10mm.
Example 3: the difference between this example and example 1 is: the horizontal included angle phi between the connecting line of the tail ends of the grid bars of the large arc-shaped tooth comb and the tangential direction of the installing edge of the weeding inner disc is 60 degrees. The arc-shaped plate of the large arc-shaped comb teeth and the arc-shaped section radius R1 of the arc-shaped grid bars are 90mm, the height H1 is 60mm, the horizontal length X1 of the arc-shaped section is 70mm, the tail ends of the arc-shaped grid bars are straight sections, and the length L1 is 55mm. The radius R2 of the arc section at the connecting end of the small arc-shaped tooth is 80mm, the height H2 is 60mm, the horizontal length X2 of the arc section is 50mm, the tail end of the small arc-shaped tooth is a straight section, and the length L of the small arc-shaped tooth is 2 Is 30mm.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (5)
1. A mesh type paddy field weeding machine is characterized in that: the weeding machine comprises a suspension and a plurality of single-row weeding mechanisms arranged along the suspension according to row spacing, wherein each single-row weeding mechanism comprises a single-row bracket, a left weeding assembly, a right weeding assembly and a depth limiting floating plate, wherein the left weeding assembly and the right weeding assembly are arranged on two sides of the single-row bracket; the motors of the left grass removing assembly and the right grass removing assembly are respectively connected with a PLC (programmable logic controller);
the left weeding assembly and the right weeding assembly respectively comprise a motor, a motor support, a transmission shaft and weeding disks, the motor supports are connected to the single-row supports, the motors are connected with the transmission shafts through couplers, the left weeding disk and the right weeding disk are installed at the grounding end of the transmission shafts, and the corresponding arc-shaped teeth on the left weeding disk and the right weeding disk are opposite in rotation direction;
the weeding plate comprises a weeding inner plate and a plurality of arc-shaped teeth, the arc-shaped teeth comprise a plurality of large arc-shaped tooth combs and small arc-shaped teeth, the large arc-shaped tooth combs and the small arc-shaped teeth are uniformly arranged on the circumference of the weeding inner plate at intervals, the upper end parts of the large arc-shaped tooth combs are connected with the weeding inner plate in a tangent line manner, and the large arc-shaped tooth combs are formed by uniformly arranging a plurality of arc-shaped grid bars at intervals along one side of an arc-shaped plate;
the tail end connecting line of the grid bar of the large arc-shaped tooth comb and the horizontal included angle between the tail end connecting line and the tangential direction of the installing edge of the weeding inner discφ40 to 60 degrees;
the arc section radius R of the arc-shaped plate and the arc-shaped grid bars of the large arc-shaped tooth comb 1 70 to 90mm and a height H 1 35 to 60mm, and the horizontal projection length X of the arc segment 1 45 to 70mm, the tail end of the arc grid is a straight section with the length of L 1 15 to 55mm;
radius R of arc section of connecting end of small arc-shaped tooth 2 60 to 80mm, height H 2 35 to 60mm and the horizontal projection length X of the arc section 2 35 to 50mm, the tail end of the small arc-shaped tooth is a straight section with the length L 2 10 to 30mm.
2. The mesh-type paddy field weeding machine according to claim 1, wherein: the single-row support is formed by connecting a horizontal rod and an inclined support rod, the two sides of the horizontal rod are connected with a left grass removing assembly and a right grass removing assembly, and one end of the horizontal rod is connected to the suspension through a four-rod profiling mechanism and a row spacing adjusting frame; the diagonal brace is positioned on the grounding side, and the end part of the diagonal brace is connected with the depth-limiting floating plate.
3. The mesh-type paddy field weeding machine according to claim 2, wherein: the depth-limiting floating plate comprises a depth-limiting lead screw, a lead screw sleeve and a floating plate, the lead screw sleeve is connected to the end of the inclined support rod, the depth-limiting lead screw sleeve is arranged in the lead screw sleeve, and the grounding end of the depth-limiting lead screw sleeve is connected with the floating plate; the working front end of the floating plate is an upward bending plate, the lower end face of the floating plate is provided with a plurality of protruding square strips, the working rear end of the floating plate is provided with a plurality of teeth, and mud gushes out from the teeth to cover weeds; the lead screw reciprocates along the lead screw sleeve, drives the floating plate height adjustment, and then adjusts the weeding depth.
4. The mesh-type paddy field weeding machine according to claim 1, wherein: the motor support of the left weeding assembly is connected to the single-row support through the plant spacing adjusting frame, and the right weeding assembly is connected to the single-row support through the fixing frame so as to adjust the spacing between the left weeding assembly and the right weeding assembly.
5. The mesh-type paddy field weeding machine according to claim 4, wherein: the plant spacing adjusting frame comprises an installation sleeve I sleeved on a horizontal rod of the single-row support, an insertion rod and an installation sleeve II arranged on the motor support, wherein one end of the insertion rod is connected with the installation sleeve I, the other end of the insertion rod penetrates into the installation sleeve II, a locking bolt is arranged on the side face of the installation sleeve, and the installation sleeve is fixed through the locking bolt after adjustment.
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| CN202011369947.1A CN112544137B (en) | 2020-11-30 | 2020-11-30 | Engagement type paddy field weeding machine |
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| CN202011369947.1A CN112544137B (en) | 2020-11-30 | 2020-11-30 | Engagement type paddy field weeding machine |
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| CN113196898B (en) * | 2021-04-12 | 2024-02-02 | 陕西光合源素生态农业科技有限公司 | Weeding system and weeding method with adjustable row-plant spacing |
| CN113692790A (en) * | 2021-08-31 | 2021-11-26 | 农业农村部南京农业机械化研究所 | Paddy field weeder |
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