Anti-entangling grass cutter roller assembly for paddy field beating-up land leveler

Abstract

The invention discloses a grass-entangling-preventing knife roller assembly for a paddy field beating and leveling machine, which belongs to agricultural machinery. A cylindrical inner ring sleeve is fixed on the outside of a knife roller shaft. An arc-shaped inner connecting plate with circular through holes B and C is fixed on the outer surface of the cylindrical inner ring sleeve. A cylindrical guide column is fixed on the outer surface of the arc-shaped inner connecting plate. A semicircular outer ring piece is slidably sleeved on the outside of a beating and leveling curved knife. The semicircular outer ring piece contains the cylindrical inner ring sleeve as a whole. An arc-shaped outer connecting plate and a reinforcing rib are fixed on the inner wall of the semicircular outer ring piece. The two ends of a pull spring I are respectively hung on the arc-shaped outer connecting plate and the arc-shaped inner connecting plate. The two end portions of a flexible blocking plate are fixed on the semicircular outer ring piece. A circular ring is fixed on the flexible blocking plate. The two ends of a rocker are respectively hinged to the arc-shaped outer connecting plate and a connecting rod. A pull spring II is hung on the connecting rod and the circular ring. The assembly eliminates the entanglement of rice stalks and weeds on the knife roller shaft, and has novel, unique and reasonable structure. The beating and leveling operation quality of the paddy field is good, the efficiency is high, the applicability is strong, and the generalization degree is high.

Description

Technical Field

[0001] This invention belongs to agricultural machinery and mainly relates to an anti-tangle grass cutter roller assembly that is installed and used in conjunction with a paddy field slurry leveling machine. Background Technology

[0002] The paddy field slurry leveler is a spring land preparation machine that is used with a tractor to complete the plowing, harrowing, and leveling of paddy fields in one go. Due to its technical advantages of strong soil breaking and slurry-making ability, as well as the ability to bury rice stubble, returned rice straw, and weeds under the mud layer, and to make the surface flat after plowing, providing good soil conditions for rice transplanting or direct seeding, this type of machine is widely used. However, years of production and use have revealed that due to deficiencies and defects in the machine's structural design, rice straw and weeds are prone to entanglement on the rotating cutter roller shaft. Excessive entanglement of rice straw and weeds thickens the diameter of the cutter roller shaft, reducing the depth of the slurry leveling cutter into the soil, and failing to meet the required tillage depth. The entangled rice straw and weeds also drag the paddy field surface into ditches, resulting in uneven ground and a significant decrease in the quality of leveling operations. At the same time, it increases the workload and power consumption. In severe cases, the cutter roller shaft may become stuck and unable to rotate, affecting the machine's service life and operational efficiency. Manually removing the entangled rice straw and weeds is labor-intensive, time-consuming, and significantly increases operating costs. 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 current paddy field slurry leveling operations, to develop and design a new structure of anti-tangle blade roller assembly for paddy field slurry leveling machines. This assembly aims to avoid and eliminate the entanglement of rice straw and weeds during slurry leveling operations, ensure work quality, reduce machine malfunctions and power consumption, improve machine efficiency, and reduce operating costs.

[0004] The objective of this invention is achieved as follows: Cylindrical inner ring sleeves are fixedly installed on the outside of the cutter roller shaft, at locations between axially adjacent slurry leveling curved cutters. Arc-shaped inner connecting plates with circular through holes B and C are fixedly installed on opposite parts of the outer circumference of the cylindrical inner ring sleeves. Cylindrical guide posts are fixedly fitted onto the arc-shaped outer surface of the arc-shaped inner connecting plates. Two opposing semi-circular outer ring pieces are slidably fitted onto the outside of the slurry leveling curved cutters through notches. The two opposing semi-circular outer ring pieces are located outside the cylindrical inner ring sleeve and completely enclose it, with a gap between the semi-circular outer ring pieces and the cylindrical inner ring sleeve. Arc-shaped outer connecting plates and reinforcing ribs are fixed perpendicularly to each other on the inner wall of the semi-circular outer ring pieces. Arc-shaped through holes and circular through holes A are formed on the arc-shaped outer connecting plates. Arc-shaped outer connecting plates are located on both sides of the semi-circular outer ring pieces. Linear grooves are respectively opened on the inner wall surface of the end. The two ends of the tension spring I are respectively hooked onto the arc-shaped through hole on the arc-shaped outer connecting plate and the circular through hole B on the arc-shaped inner connecting plate. The two ends of the two flexible blocking plates are respectively snapped and fixedly installed on the linear grooves on the inner wall surface of the opposite ends of the semi-circular outer ring plates for fixed connection. The ring is fixedly installed on the flexible blocking plate. Rockers are rotatably hinged on the circular through holes A at both ends of the arc-shaped outer connecting plate. The other ends of the two rockers are simultaneously hinged and installed on the same connecting rod. The two ends of the tension spring II are respectively hooked onto the connecting rod and the ring. A screw assembly is fixedly inserted into the circular through hole C of the arc-shaped inner connecting plate. The limiting rope is inserted into the cylindrical hole of the cylindrical guide column. The inner and outer ends of the limiting rope are respectively fixed to the screw assembly and the arc-shaped through hole of the arc-shaped outer connecting plate. Thus, the anti-tangling grass cutter roller assembly for the paddy field slurry leveling machine is formed.

[0005] This invention employs a structure consisting of a cylindrical inner ring sleeve, an arc-shaped inner connecting plate, and a radially telescopic arc-shaped outer connecting plate and a semi-circular outer ring plate on the outside of the cutter roller shaft. This structure allows for an increase in the external diameter (circumference) of the cutter roller shaft during slurrying and leveling operations. It avoids and eliminates the problem of rice straw and weeds overlapping and becoming entangled on the cutter roller shaft. The invention features a novel, unique, and reasonable structure, excellent prevention of rice straw and weed entanglement on the cutter roller shaft, high-quality slurrying and leveling operation of the cutter roller assembly, fewer malfunctions, high machine safety and efficiency, energy saving, and strong versatility. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of the anti-tangling grass cutter roller assembly for a paddy field slurry leveling machine;

[0007] Figure 2 yes Figure 1 Partial sectional view along line AA;

[0008] Figure 3 yes Figure 1 A schematic diagram of the operational status structure;

[0009] Figure 4 yes Figure 3 Enlarged view of section B;

[0010] Figure 5 This is a schematic diagram of the connecting rod and rocker assembly structure;

[0011] Figure 6 This is a schematic diagram of a semi-circular outer ring structure;

[0012] Figure 7 This is a schematic diagram of a cylindrical inner ring sleeve structure.

[0013] Part number description in the image:

[0014] 1. Cutter roller shaft; 2. Slurry leveling curved blade; 3. Semi-circular outer ring plate; 3-1. Notch; 3-2. Linear groove; 4. Cylindrical inner ring sleeve; 5. Arc-shaped outer connecting plate; 5-1. Arc-shaped through hole; 5-2. Circular through hole A; 6. Circular ring; 7. Flexible blocking plate; 8. Tension spring II; 9. Rocker arm; 10. Connecting rod; 11. Tension spring I; 12. Arc-shaped inner connecting plate; 12-1. Circular through hole B; 12-2. Circular through hole C; 13. Screw assembly; 14. Reinforcing rib; 15. Cylindrical guide column; 15-1. Cylindrical hole; 16. Limiting rope. Detailed Implementation

[0015] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. An anti-tangle grass-driving cutter roller assembly for a paddy field slurry leveling machine includes a cutter roller shaft 1, on which a plurality of slurry leveling curved blades 2 are sequentially fixed. Cylindrical inner ring sleeves 4 are fixedly installed on the outside of the cutter roller shaft 1 at locations between axially adjacent slurry leveling curved blades 2. Arc-shaped inner connecting plates 12 with circular through holes B12-1 and C12-2 are fixedly installed on opposite portions of the outer circumference of the cylindrical inner ring sleeves 4. Cylindrical guide posts 15 are fixedly fitted onto the arc-shaped outer surface of the arc-shaped inner connecting plates 12. Two opposing semi-circular outer ring pieces 3 are slidably fitted onto the outside of the leveling cutter 2 through notches 3-1. The two opposing semi-circular outer ring pieces 3 are located outside the cylindrical inner ring sleeve 4 and completely enclose it. A gap is left between the semi-circular outer ring pieces 3 and the cylindrical inner ring sleeve 4. An arc-shaped outer connecting plate 5 and a reinforcing rib 14 are respectively fixed perpendicularly to each other on the inner wall surface of the semi-circular outer ring pieces 3. An arc-shaped through hole 5-1 and a circular through hole are opened on the arc-shaped outer connecting plate 5. A5-2, linear slots 3-2 are respectively opened on the inner wall surfaces of both ends of the semi-circular outer ring plate 3. The two ends of the tension spring I11 are respectively hooked onto the arc-shaped through hole 5-1 on the arc-shaped outer connecting plate 5 and the circular through hole B12-1 on the arc-shaped inner connecting plate 12. The two ends of the two flexible blocking plates 7 are respectively snapped and fixedly installed on the linear slots 3-2 on the inner wall surfaces of the opposite ends of the semi-circular outer ring plate 3 for fixed connection. The ring 6 is fixedly installed on the flexible blocking plate 7. Two rocker arms 9 are rotatably hinged to the circular through hole A5-2 of the part. The other ends of the two rocker arms 9 are simultaneously hinged to the same connecting rod 10. The two ends of the tension spring II8 are respectively hooked to the connecting rod 10 and the ring 6. The screw assembly 13 is fixedly inserted into the circular through hole C12-2 of the arc-shaped inner connecting plate 12. The limiting rope 16 is inserted into the cylindrical hole 15-1 of the cylindrical guide post 15. The inner and outer ends of the limiting rope 16 are respectively fixed to the screw assembly 13 and the arc-shaped through hole 5-1 of the arc-shaped outer connecting plate 5.

[0016] During operation, the external rotational power drives the slurry leveling curved blade 2 and the cylindrical inner ring sleeve 4 to rotate synchronously through the cutter roller shaft 1. The slurry leveling curved blade 2, in turn, drives the two relatively arranged semi-circular outer ring plates 3 to rotate simultaneously through the notch 3-1 on the semi-circular outer ring plate 3. Under the action of rotational centrifugal force, the semi-circular outer ring plate 3 with the arc-shaped outer connecting plate 5 and the reinforcing rib 14, overcomes the tension of the tension spring I11 and, under the control of the slurry leveling curved blade 2, performs repeated extension and retraction movements along the radial direction of the cutter roller shaft 1, changing the outer diameter of the two relatively arranged semi-circular outer ring plates 3, and preventing the phenomenon of rice straw and weeds overlapping and entangled on it. At this time, the flexible blocking plate 7 completes the extension and unfolding or shortening and folding action under the control of the tension spring II8, rocker arm 9 and connecting rod 10, eliminating the rice straw and weeds from filling the space between the semi-circular outer ring plate 3 and the cylindrical inner ring sleeve 4 during operation, ensuring the reliability of operation. When the cutter roller shaft 1 rotates at a high speed, the centrifugal force increases, resulting in a larger radial extension and outer diameter of the two semi-circular outer ring plates 3. This allows for threshing and leveling operations with longer rice straw and weeds. Conversely, when the cutter roller shaft 1 rotates at a low speed, the centrifugal force decreases, resulting in a smaller radial extension and outer diameter of the two semi-circular outer ring plates 3. This allows for threshing and leveling operations with shorter rice straw and weeds, reducing power consumption and saving energy. The limiting rope 16 restricts the maximum extension length of the two semi-circular outer ring plates 3, ensuring safe operation and preventing malfunctions.

Claims

1. An anti-tangle grass cutter roller assembly for a paddy field slurry leveling machine, comprising a cutter roller shaft (1), on which a plurality of slurry leveling curved blades (2) are sequentially fixed, characterized in that: Cylindrical inner ring sleeves (4) are fixedly installed on the outside of the cutter roller shaft (1) at the position between the axially adjacent slurry leveling curved cutters (2). Arc-shaped inner connecting plates (12) with circular through holes B (12-1) and C (12-2) are fixedly installed on the opposite parts of the outer circumference of the cylindrical inner ring sleeves (4). Cylindrical guide posts (15) are fixedly fitted on the arc-shaped outer surface of the arc-shaped inner connecting plates (12). Two oppositely arranged semi-circular outer ring pieces (3) are slidably fitted onto the slurry leveling curved cutters through notches (3-1). (2) Externally, the two opposing semi-circular outer ring pieces (3) are located outside the cylindrical inner ring sleeve (4) and completely enclose it. There is a gap between the semi-circular outer ring pieces (3) and the cylindrical inner ring sleeve (4). An arc-shaped outer connecting plate (5) and a reinforcing rib (14) are fixed perpendicularly to each other on the inner wall surface of the semi-circular outer ring pieces (3). An arc-shaped through hole (5-1) and a circular through hole A (5-2) are opened on the arc-shaped outer connecting plate (5). Linear holes are opened on the inner wall surface of the two ends of the semi-circular outer ring pieces (3). The two ends of the slot (3-2) and the tension spring I (11) are respectively hooked onto the arc-shaped through hole (5-1) on the arc-shaped outer connecting plate (5) and the circular through hole B (12-1) on the arc-shaped inner connecting plate (12). The two ends of the two flexible blocking plates (7) are respectively snapped and fixedly installed on the linear slot (3-2) on the inner wall of the opposite ends of the relatively arranged semi-circular outer ring plate (3) for fixed connection. The ring (6) is fixed on the flexible blocking plate (7) and can be rotatably hinged on the circular through hole A (5-2) at both ends of the arc-shaped outer connecting plate (5). Install rocker arms (9), and simultaneously hinge the other ends of the two rocker arms (9) to the same connecting rod (10). The two ends of the tension spring II (8) are respectively hung on the connecting rod (10) and the ring (6). The screw assembly (13) is fixed in the circular through hole C (12-2) of the arc-shaped inner connecting plate (12). The limiting rope (16) is inserted into the cylindrical hole (15-1) of the cylindrical guide column (15). The inner and outer ends of the limiting rope (16) are respectively fixed to the screw assembly (13) and the arc-shaped through hole (5-1) of the arc-shaped outer connecting plate (5).

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