Grass winding prevention knife roller assembly for paddy field pulping land leveler

Abstract

The invention discloses a grass winding prevention knife roller assembly for a paddy field pulping land leveler and belongs to agricultural machinery. A cylindrical inner ring sleeve is fixedly arranged on the outer portion of a knife roll shaft, an arc-shaped inner connecting plate with circular through holes B and C is fixedly arranged on the outer surface of the cylindrical inner ring sleeve, a cylindrical guide column is fixedly arranged on the outer surface of the arc-shaped inner connecting plate in a matched mode, a semicircular outer ring piece is slidably arranged on the outer portion of a beating and leveling bent knife in a sleeved mode, and the cylindrical inner ring sleeve is integrally contained by the semicircular outer ring piece. The arc-shaped outer connecting plate and the reinforcing rib are fixedly installed on the inner wall face of the semicircular outer ring piece, the two ends of the tension spring I are hung on the arc-shaped outer connecting plate and the arc-shaped inner connecting plate respectively, the two ends of the flexible blocking plate are fixedly connected with the semicircular outer ring piece, the circular ring is fixedly installed on the flexible blocking plate, and the two ends of the rocker are hinged to the arc-shaped outer connecting plate and the connecting rod respectively. The tension spring II is hung on the connecting rod and the circular ring; the assembly eliminates winding faults of rice straws and weeds on the knife roll shaft, and is novel, unique and reasonable in structure, good in paddy field beating and leveling operation quality, high in efficiency, high in applicability and high in generalization degree.

Description

Technical Field

[0001] The invention belongs to agricultural machinery, and mainly relates to an anti-grass entanglement knife roller assembly which is matched and installed on a paddy field beating and leveling machine. Background Art

[0002] A paddy field beating and leveling machine is a spring land preparation machine that is matched with a tractor and can complete paddy field water plowing and leveling operations in one go. This type of machine is widely used because of its strong soil crushing and slurry-generating ability, and its ability to bury rice stubble, rice straw, and weeds under the mud layer, making the surface flat after plowing and providing good soil conditions for rice transplanting or direct seeding. However, it has been found in many years of production and use that due to the deficiencies and defects in the structural design of the machine, rice stalks and weeds are very likely to become entangled on the rotating ground cutter roller shaft. The entanglement of too many rice stalks and weeds thickens the diameter of the cutter roller shaft, reduces the depth of the pulping and leveling blade into the soil, and the plowing depth does not meet the operation requirements. The entangled rice stalks and weeds drag the surface of the paddy field out of grooves, making the surface uneven, and the quality of leveling operations is greatly reduced. At the same time, the operating load is increased, and the power consumption is increased. In severe cases, the cutter roller shaft will be entangled and stuck, and cannot rotate, affecting the service life and operation efficiency of the machine. Manual removal of entangled rice stalks and weeds is labor-intensive and time-consuming, and the cost of use is greatly increased. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the above-mentioned prior art, combine with the actual needs of the current paddy field pulping and leveling operations, and develop and design a new structure of anti-grass entanglement knife roller assembly for a paddy field pulping and leveling machine, so as to avoid and eliminate the entanglement of rice straw and weeds on the knife roller shaft during pulping and leveling operations, ensure the operation quality, reduce machine failures and power consumption, improve the use efficiency of machine tools, and reduce operating costs.

[0004] The purpose of the invention is achieved in this way: on the outside of the knife roller shaft, a cylindrical inner ring sleeve is fixedly installed at the position between the axially adjacent beating flat curved knives, and on the relative positions of the circumferential outer surface of the cylindrical inner ring sleeve, an arc-shaped inner connecting plate with a circular through hole B and a circular through hole C is fixedly installed, and a cylindrical guide column is fixedly mounted on the arc-shaped outer surface of the arc-shaped inner connecting plate. Two relatively arranged semicircular outer ring pieces can be slidably mounted on the outside of the beating flat curved knife through the notches thereon. The two relatively arranged semicircular outer ring pieces are located on the outside of the cylindrical inner ring sleeve and contain it as a whole. A spacing is left between the semicircular outer ring piece and the cylindrical inner ring sleeve. Arc-shaped outer connecting plates and reinforcing ribs are fixedly installed perpendicular to each other on the inner wall surface of the semicircular outer ring piece, and an arc through hole and a circular through hole A are opened on the arc-shaped outer connecting plate. Linear slots are respectively provided on the inner wall surfaces of the end portions, and the two ends of the tension spring I are respectively hung on 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, and the two ends of the two flexible blocking plates are respectively snap-fitted and fixedly mounted on the linear slots on the inner wall surfaces of the opposite ends of the relatively configured semicircular outer ring plates to be fixedly connected, and the circular rings are fixedly mounted on the flexible blocking plates, and rockers are respectively rotatably hinged on the circular through holes A at both ends of the arc-shaped outer connecting plates, and the other ends of the two rockers are simultaneously hinged and mounted on the same connecting rod, and the two ends of the tension spring II are respectively hung on the connecting rod and the circular ring, and a screw group is fixedly inserted in the circular through hole C of the arc-shaped inner connecting plate, and a limiting rope is inserted into the barrel hole of the barrel guide column, and the inner and outer ends of the limiting rope are respectively fixedly connected to the screw group and the arc-shaped through hole of the arc-shaped outer connecting plate, thereby constituting an anti-grass entanglement knife roller assembly for a paddy field beating grader.

[0005] The invention adopts a radially retractable and movable arc-shaped outer connecting plate and a semicircular outer ring piece structure equipped with a cylindrical inner ring sleeve and an arc-shaped inner connecting plate on the outside of the knife roller shaft, so as to realize the increase and change of the outer diameter size of the knife roller shaft, that is, the circumference size of the circle when the knife roller shaft is rotating for pulping and leveling operation, avoid and eliminate the occurrence of rice straw and weeds overlapping and entangled on the knife roller shaft with their heads and tails. It has the characteristics of novel, unique and reasonable structure, good effect in preventing rice straw and weeds from being entangled on the knife roller shaft, good quality of pulping and leveling operation of the knife roller assembly, few operating failures, high machine safety and operating efficiency, power saving and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of an anti-grass entanglement blade roller assembly for a paddy field beating and leveling machine;

[0007] Figure 2 yes Figure 1 Partial cross-sectional view along AA axis;

[0008] Figure 3 yes Figure 1 Schematic diagram of the operation status structure;

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

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

[0011] Figure 6 It is a schematic diagram of the structure of the semicircular outer ring piece;

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

[0013] Description of part numbers in the figure:

[0014] 1. knife roller shaft, 2. beating flat curved knife, 3. semicircular outer ring piece, 3-1, notch, 3-2, linear slot, 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, 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 group, 14. reinforcing ribs, 15. cylindrical guide column, 15-1, cylinder hole, 16. limit rope. DETAILED DESCRIPTION

[0015] The following is a detailed description of the implementation scheme of the invention in conjunction with the accompanying drawings. A grass-entanglement-proof blade roller assembly for a paddy field beating and leveling machine comprises a blade roller shaft 1, on which a plurality of beating and leveling curved blades 2 are sequentially fixed, and on the outside of the blade roller shaft 1, cylindrical inner ring sleeves 4 are respectively fixed at positions between axially adjacent beating and leveling curved blades 2, and arc-shaped inner connecting plates 12 with circular through holes B12-1 and circular through holes C12-2 are respectively fixed at opposite positions on the outer circumferential surface of the cylindrical inner ring sleeve 4, and a cylindrical guide column 15 is fixedly mounted on the arc-shaped outer surface of the arc-shaped inner connecting plate 12. The two oppositely arranged semicircular outer ring pieces 3 are slidably mounted on the outside of the beating flat curved blade 2 through the notches 3-1 thereon. The two oppositely arranged semicircular outer ring pieces 3 are located outside the cylindrical inner ring sleeve 4 and contain the cylindrical inner ring sleeve 4 as a whole. A spacing is left between the semicircular outer ring piece 3 and the cylindrical inner ring sleeve 4. The arc-shaped outer connecting plate 5 and the reinforcing rib 14 are respectively fixed perpendicularly to each other on the inner wall surface of the semicircular outer ring piece 3. The arc-shaped through hole 5-1 and the circular through hole 14 are provided on the arc-shaped outer connecting plate 5. A5-2, linear grooves 3-2 are respectively provided on the inner wall surfaces of the two ends of the semicircular outer ring piece 3, and the two ends of the tension spring I11 are respectively hung on 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, and the two ends of the two flexible blocking plates 7 are respectively snap-fitted and fixedly mounted on the linear grooves 3-2 on the inner wall surfaces of the opposite ends of the relatively configured semicircular outer ring piece 3, and the circular ring 6 is fixedly mounted on the flexible blocking plate 7, and the two ends of the arc-shaped outer connecting plate 5 are fixedly mounted on the linear grooves 3-2 on the inner wall surfaces of the opposite ends of the relatively configured semicircular outer ring piece 3. The rocking arms 9 are rotatably hinged on the circular through holes A5-2 in the two parts, and the other ends of the two rocking arms 9 are hingedly installed on the same connecting rod 10. The two ends of the tension spring II8 are respectively hung on the connecting rod 10 and the ring 6. The screw group 13 is fixedly inserted in the circular through hole C12-2 of the arc-shaped inner connecting plate 12, and 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 fixedly connected to the screw group 13 and the arc-shaped through hole 5-1 of the arc-shaped outer connecting plate 5.

[0016] During operation, the external input rotational power drives the beating flat ground curved blade 2 and the cylindrical inner ring sleeve 4 to rotate synchronously through the knife roller shaft 1. The beating flat ground curved blade 2 drives the two relatively configured semicircular outer ring pieces 3 to rotate simultaneously through the notch 3-1 on the semicircular outer ring piece 3. Under the action of the rotating centrifugal force, the semicircular outer ring piece 3 with the arc-shaped outer connecting plate 5 and the reinforcing rib 14 overcomes the tension of the tension spring I11 and performs repeated telescopic movement along the radial direction of the knife roller shaft 1 under the control of the beating flat ground curved blade 2, thereby changing the outer diameter size of the two relatively configured semicircular outer ring pieces 3 to avoid the entanglement of rice stalks and weeds on them. At this time, the flexible blocking plate 7 completes the extension and expansion or shortening and folding action under the control of the tension spring II8, the rocker 9 and the connecting rod 10, thereby eliminating the rice stalks and weeds filling in between the semicircular outer ring piece 3 and the cylindrical inner ring sleeve 4 during operation, thereby ensuring the reliability of operation. When the rotation speed of the knife roller shaft 1 is high, the centrifugal force increases, the radial extension size of the two semicircular outer ring pieces 3 is large, and the outer diameter size is large, which can meet and adapt to the use of beating and leveling operations under the conditions of long rice stalks and weeds; when the rotation speed of the knife roller shaft 1 is low, the centrifugal force decreases, the radial extension size of the two semicircular outer ring pieces 3 is small, and the outer diameter size is small, which can meet and adapt to the use of beating and leveling operations under the conditions of short rice stalks and weeds, reducing power consumption and saving energy. The limit rope 16 can limit the maximum extension length of the two semicircular outer ring pieces 3 to ensure the safety of operation and avoid malfunctions.

Claims

1. A grass-entanglement-proof blade roller assembly for a paddy field beating and leveling machine, comprising a blade roller shaft (1), on which a plurality of beating and leveling curved blades (2) are sequentially fixed, characterized in that: A cylindrical inner ring sleeve (4) is fixedly mounted on the outside of the knife roller shaft (1) and between the axially adjacent beating flat curved knives (2). An arc-shaped inner connecting plate (12) with a circular through hole B (12-1) and a circular through hole C (12-2) is fixedly mounted on the opposite parts of the circumferential outer surface of the cylindrical inner ring sleeve (4). A cylindrical guide column (15) is fixedly mounted on the arc-shaped outer surface of the arc-shaped inner connecting plate (12). Two oppositely arranged semicircular outer ring pieces (3) are slidably mounted on the beating flat curved knives through the notches (3-1) thereon. (2) On the outside, the two oppositely arranged semicircular outer ring pieces (3) are located outside the cylindrical inner ring sleeve (4) and contain the cylindrical inner ring sleeve (4) as a whole. A spacing is left between the semicircular outer ring piece (3) and the cylindrical inner ring sleeve (4). On the inner wall surface of the semicircular outer ring piece (3), an arc-shaped outer connecting plate (5) and a reinforcing rib (14) are respectively fixed perpendicularly to each other. An arc-shaped through hole (5-1) and a circular through hole A (5-2) are provided on the arc-shaped outer connecting plate (5). Linear through holes (5-1) and a circular through hole A (5-2) are respectively provided on the inner wall surfaces of the two side ends of the semicircular outer ring piece (3). The two ends of the tension spring I (11) are respectively hooked on the arc through hole (5-1) on the arc outer connecting plate (5) and the circular through hole B (12-1) on the arc inner connecting plate (12); the two ends of the two flexible blocking plates (7) are respectively buckled and fixedly mounted on the linear slots (3-2) on the inner wall surfaces of the opposite ends of the semicircular outer ring pieces (3) arranged oppositely to be fixedly connected; the circular ring (6) is fixedly mounted on the flexible blocking plate (7) and is rotatably hinged on the circular through holes A (5-2) at the two ends of the arc outer connecting plate (5). A rocker (9) is installed, and the other ends of the two rockers (9) are hingedly installed on 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). A screw rod group (13) is fixedly inserted in the circular through hole C (12-2) of the arc-shaped inner connecting plate (12). A limit rope (16) is inserted into the cylindrical hole (15-1) of the cylindrical guide column (15). The inner and outer ends of the limit rope (16) are respectively fixedly connected to the screw rod group (13) and the arc-shaped through hole (5-1) of the arc-shaped outer connecting plate (5).

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