Combined cutterbar and knife inter-row cultivator and weeder

Abstract

The utility model relates to a single body of a moving blade and fixed blade combined shearing type inter-row cultivator, which belongs to agricultural machinery, and is characterized in that a single body shaft is fixed on the lower end of a single body frame, a left inner spoke, a left moving blade spoke and a right inner spoke, a right moving blade spoke are rotatably installed on the left and right sides of the single body shaft, a left moving blade annular seat plate and a right moving blade annular seat plate are fixed on the left and right inner spokes respectively, a left moving blade and a right moving blade are supported and installed between the left inner spoke and the left moving blade annular seat plate and between the right inner spoke and the right moving blade annular seat plate respectively, and front and rear left fixed blades and front and rear right fixed blades are fixed on the left and right sides of the single body shaft through a left sleeve, a split pin A, left fixed blade inner and outer seat plates and a right sleeve, a split pin B, right fixed blade inner and outer seat plates respectively. The single body has the advantages of scientific design principle, novel, unique and reasonable structure, good weeding effect, high weed mortality, no grass entanglement and soil compaction, high operation efficiency and low seedling damage rate.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery, and mainly relates to a weeding assembly suitable for mechanical weeding operations between rows in paddy fields. Background Technology

[0002] Currently, most mechanical weeding methods used in paddy fields employ passively rotating weeding wheels. These wheels disturb the soil between rows, picking up weeds and causing them to float on the water surface or be buried and die. However, due to design flaws in these weeding wheels, the simple method of picking out and burying weeds not only creates soil clogging during operation, impacting and damaging the soil structure and the rice root system's growth environment, but also lacks the ability to cut or break up weeds, allowing them to easily regrow and reducing weeding quality and effectiveness. Furthermore, the Π-shaped suspension of these wheels easily scratches rice seedlings at both ends, increasing the rate of seedling damage. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art and, in combination with the actual needs of inter-row operations in paddy fields, to research and design a single unit of a shearing inter-row weeding device that combines moving and fixed blades. This device aims to achieve good weeding effect in paddy fields, high weed mortality rate, no weed entanglement or soil accumulation during operation, no impact or damage to the soil environment of rice roots, and no harm to rice seedlings.

[0004] The objective of this invention is achieved as follows: a single-unit plate frame is circumferentially hinged and mounted on the lower side of the suspension arm plate via a pin assembly; a positioning pin assembly is fixedly mounted on the suspension arm plate at the upper side of the single-unit plate frame, the positioning pin assembly having a contact limiting engagement with the upper side of the single-unit plate frame; the upper and lower ends of a tension spring are respectively connected to the upper side of the suspension arm plate and the upper side of the single-unit plate frame; a single-unit shaft is horizontally fixed at the lower end of the single-unit plate frame; and a left inner spoke plate and a right inner spoke plate are rotatably mounted on the single-unit shaft at the left and right sides of the single-unit plate frame via bearings B and C, respectively. A plate is constructed, with a left moving cutter annular seat plate and a right moving cutter annular seat plate respectively fixed to the outer walls of the left inner spoke plate and the right inner spoke plate by fastening bolts A and B, respectively. The left moving cutter spoke plate and the right moving cutter spoke plate are rotatably mounted on the left and right ends of the single shaft by bearings A and D, respectively. Multiple left moving cutters are evenly distributed and supported along the circumferential direction between the left moving cutter spoke plate and the left moving cutter annular seat plate, and multiple right moving cutters are evenly distributed and supported along the circumferential direction between the right moving cutter spoke plate and the right moving cutter annular seat plate. A section is located on the left side of the single shaft between the left moving cutter spoke plate and the left inner spoke plate. The left sleeve is fixed by cotter pin A. The left fixed blade outer seat plate and the left fixed blade inner seat plate are respectively fitted onto the single shaft. The left fixed blade outer seat plate and the left fixed blade inner seat plate are fixed to the left and right ends of the left sleeve, respectively. The front left fixed blade and the rear left fixed blade are parallel to each other and are respectively supported and fixed on the lower front and lower rear sides between the left fixed blade outer seat plate and the left fixed blade inner seat plate. The height of the rear left fixed blade is below the height of the front left fixed blade. The front left fixed blade and the rear left fixed blade are respectively engaged with the left moving blade in a shearing motion. The part on the right side of the single shaft between the right moving blade spoke and the right inner spoke is... The right sleeve is fixed by cotter pin B. The right fixed blade outer seat plate and the right fixed blade inner seat plate are respectively fitted onto the single unit shaft. The right fixed blade outer seat plate and the right fixed blade inner seat plate are fixed to the right end and the left end of the right sleeve, respectively. The front right fixed blade and the rear right fixed blade are parallel to each other and are respectively supported and fixed on the lower front side and the lower rear side between the right fixed blade outer seat plate and the right fixed blade inner seat plate. The height position of the rear right fixed blade is below the height position of the front right fixed blade. The front right fixed blade and the rear right fixed blade cooperate with the right moving blade in a shearing motion. Thus, a single unit of moving blade and fixed blade combination shearing inter-row tillage and weeding device is formed.

[0005] This invention utilizes a combination of moving and fixed blades to perform weeding operations between rows in paddy fields, eliminating the need for the Π-shaped hanging frame in the original technology. This avoids and eliminates damage to rice seedlings. It features a scientific design principle, novel, unique, and reasonable structure, excellent weeding effect, high weed mortality rate, no weed entanglement or soil accumulation, high operating efficiency, and low seedling damage rate, providing technical support for weeding between rows in paddy fields. Attached Figure Description

[0006] Figure 1This is a three-dimensional schematic diagram of the overall structure of a single shearing-type inter-row tillage and weeding device that combines moving and fixed blades.

[0007] Figure 2 yes Figure 1 A partial two-dimensional view in direction A;

[0008] Figure 3 yes Figure 2 Sectional view along line B-B;

[0009] Figure 4 This is a schematic diagram of the right-hand moving tool assembly structure;

[0010] Figure 5 This is a schematic diagram of the left-hand moving tool assembly structure;

[0011] Figure 6 This is a schematic diagram of the right front and rear fixed tool assembly structure;

[0012] Figure 7 This is a schematic diagram of the left front and rear fixed tool assembly structure.

[0013] Part number description in the image:

[0014] 1. Suspension arm plate; 2. Positioning pin assembly; 3. Pin assembly; 4. Left moving blade annular seat plate; 5. Fastening bolt A; 6. Left moving blade; 7. Cotter pin A; 8. Left moving blade spoke plate; 9. Left fixed blade outer seat plate; 10. Bearing A; 11. Rear left fixed blade; 12. Left sleeve; 13. Single unit shaft; 14. Front left fixed blade; 15. Left fixed blade inner seat plate; 16. Bearing B; 17. Right moving blade annular seat plate; 18. Front right fixed blade; 19. Right moving blade; 20. Right sleeve; 21. Right fixed blade outer seat plate; 22. Right moving blade spoke plate; 23. Bearing D; 24. Cotter pin B; 25. Single unit plate frame; 26. Rear right fixed blade; 27. Right inner spoke plate; 28. Right fixed blade inner seat plate; 29. ​​Bearing C; 30. Fastening bolt B; 31. Tension spring; 32. Left inner spoke plate. Detailed Implementation

[0015] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. A single unit of a combined moving and fixed blade shearing inter-row tillage and weeding device comprises a single unit frame 25 hinged to the lower side of a suspension arm plate 1 via a pin assembly 3, allowing for circumferential swing. A positioning pin assembly 2 is fixedly mounted on the suspension arm plate 1 at the upper side of the single unit frame 25, the positioning pin assembly 2 having a contact limiting engagement with the upper side of the single unit frame 25. The upper and lower ends of a tension spring 31 are respectively connected to the upper side of the suspension arm plate 1 and the upper side of the single unit frame 25. A single unit shaft 13 is horizontally fixedly mounted at the lower end of the single unit frame 25. A left inner spoke is rotatably mounted on the single unit shaft 13 at the left and right sides of the single unit frame 25 via bearings B16 and C29, respectively. Plate 32 and right inner spoke 27, with left moving blade annular seat plate 4 and right moving blade annular seat plate 17 respectively fixed on the outer wall of the left inner spoke plate 32 and right inner spoke plate 27 by fastening bolts A5 and B30 respectively. Left moving blade spoke plate 8 and right moving blade spoke plate 22 are rotatably mounted on the left and right ends of the single shaft 13 by bearings A10 and D23 respectively. Multiple left moving blades 6 are evenly distributed and supported along the circumferential direction between the left moving blade spoke plate 8 and the left moving blade annular seat plate 4, and multiple right moving blades 19 are evenly distributed and supported along the circumferential direction between the right moving blade spoke plate 22 and the right moving blade annular seat plate 17. The left moving blade spoke plate is located on the left side of the single shaft 13. The left sleeve 12 is fixedly mounted on the portion between the left inner spoke 32 and the left sleeve 12 via a cotter pin A7. The left fixed blade outer seat plate 9 and the left fixed blade inner seat plate 15 are respectively mounted on the single shaft 13. The left fixed blade outer seat plate 9 and the left fixed blade inner seat plate 15 are fixedly mounted to the left and right ends of the left sleeve 12, respectively. The front left fixed blade 14 and the rear left fixed blade 11 are parallel to each other and are respectively supported and fixed on the lower front and lower rear sides between the left fixed blade outer seat plate 9 and the left fixed blade inner seat plate 15. The height of the rear left fixed blade 11 is below the height of the front left fixed blade 14. The front left fixed blade 14 and the rear left fixed blade 11 are respectively engaged with the left moving blade 6 in a shearing motion. On the right side of the single shaft 13 A right sleeve 20 is fixedly mounted on the area between the right moving blade spoke 22 and the right inner blade spoke 27 via a cotter pin B24. The right fixed blade outer seat plate 21 and the right fixed blade inner seat plate 28 are respectively mounted on the single shaft 13. The right fixed blade outer seat plate 21 and the right fixed blade inner seat plate 28 are fixedly mounted to the right end and the left end of the right sleeve 20, respectively. The front right fixed blade 18 and the rear right fixed blade 26 are parallel to each other and are respectively supported and fixed on the lower front side and the lower rear side between the right fixed blade outer seat plate 21 and the right fixed blade inner seat plate 28. The height position of the rear right fixed blade 26 is below the height position of the front right fixed blade 18. The front right fixed blade 18 and the rear right fixed blade 26 are respectively engaged with the right moving blade 19 in a shearing motion.

[0016] During operation, the unit is mounted as a whole on the weeding and cultivating implement between the rows of paddy fields via the suspension arm plate 1 and moves forward with it. The unit is positioned between the rows of rice seedlings, and the left moving blade 6 and the right moving blade 19 come into contact with the soil in the paddy field. Under the action of soil resistance, the left moving blade 6 and the right moving blade 19 rotate in a circle relative to the unit's axis 13. At this time, the front left fixed blade 14 and the front right fixed blade 18 are in contact with the soil surface and form a dynamic-fixed cooperation shearing structure with the rotating left and right moving blades 6 and 19, respectively, to perform and complete the shearing, crushing, and burying of weeds. Subsequently, the rear left fixed blade 11 and the rear right fixed blade 26, which are placed under the soil layer, form a new dynamic-fixed cooperation shearing structure with the rotating left and right moving blades 6 and 19, respectively, to perform and complete a second shearing, crushing, and burying of weeds, reducing and avoiding the occurrence of missed removal.

[0017] The shearing structure of the moving and fixed blades created in this invention enables the shredding of weeds in paddy fields, resulting in a high weed mortality rate. It also ensures the self-cleaning of the weeder unit, avoiding and eliminating the entanglement of weeds and soil on the working parts. The single-unit plate frame hanging structure solves the problem of the existing Π-shaped hanging frame scratching rice seedlings, producing good and significant technical effects.

Claims

1. A single unit of a shearing-type inter-row tillage and weeding device combining moving and fixed blades, wherein a unit frame (25) is circumferentially hinged to the lower part of a suspension arm plate (1) via a pin assembly (3), and a positioning pin assembly (2) is fixedly installed on the upper part of the unit frame (25) on the suspension arm plate (1), wherein the positioning pin assembly (2) is in contact with and limited by the upper part of the unit frame (25), and the upper and lower ends of a tension spring (31) are respectively connected to the upper part of the suspension arm plate (1) and the upper part of the unit frame (25), characterized in that: A single-unit shaft (13) is fixedly mounted horizontally on the lower end of the single-unit frame (25). A left inner spoke (32) and a right inner spoke (27) are rotatably mounted on the single-unit shaft (13) at the left and right sides of the single-unit frame (25) via bearings B (16) and C (29), respectively. A left moving blade annular seat plate (4) and a right moving blade annular seat plate (17) are fixedly mounted on the outer wall of the left inner spoke (32) and the right inner spoke (27) via fastening bolts A (5) and B (30), respectively. A left moving blade is rotatably mounted on the left and right ends of the single-unit shaft (13) via bearings A (10) and D (23), respectively. The spokes (8) and the right moving blade spokes (22) are supported by multiple left moving blades (6) evenly distributed along the circumferential direction between the left moving blade spokes (8) and the left moving blade annular seat plate (4), and multiple right moving blades (19) are evenly distributed along the circumferential direction between the right moving blade spokes (22) and the right moving blade annular seat plate (17). A left sleeve (12) is fixed on the left side of the single shaft (13) between the left moving blade spokes (8) and the left inner spokes (32) by a cotter pin A (7). The left fixed blade outer seat plate (9) and the left fixed blade inner seat plate (15) are respectively fitted on the single shaft (13). (15) The left and right ends of the left sleeve (12) are fixedly mounted respectively. The front left fixed blade (14) and the rear left fixed blade (11) are supported and fixedly mounted on the lower front and lower rear sides of the left fixed blade outer seat plate (9) and the left fixed blade inner seat plate (15) respectively. The height position of the rear left fixed blade (11) is below the height position of the front left fixed blade (14). The front left fixed blade (14) and the rear left fixed blade (11) are respectively engaged with the left moving blade (6) in a shearing motion. The right sleeve (20) is fixedly mounted on the right side of the single shaft (13) between the right moving blade spoke (22) and the right inner spoke (27) by a cotter pin B (24). The outer right fixed blade plate (21) and the inner right fixed blade plate (28) are respectively mounted on the single shaft (13). The outer right fixed blade plate (21) and the inner right fixed blade plate (28) are respectively fixed to the right end and the left end of the right sleeve (20). The front right fixed blade (18) and the rear right fixed blade (26) are supported and fixed on the lower front and lower rear sides between the outer right fixed blade plate (21) and the inner right fixed blade plate (28), respectively. The height of the rear right fixed blade (26) is below the height of the front right fixed blade (18). The front right fixed blade (18) and the rear right fixed blade (26) are respectively engaged with the right moving blade (19) in a shearing motion.

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