Rotary blade device

Abstract

A rotary blade device is provided with a bent blade and an auxiliary blade, the auxiliary blade comprises an inner side auxiliary blade and a grass winding prevention blade, the installation position of the inner side auxiliary blade is close to a gearbox, the grass winding prevention blade is fixed to the gearbox through an installation base, and the position matching relation of the grass winding prevention blade and the inner side auxiliary blade is staggered shearing matching. The multifunctional grass cutter has the advantages that 1, the multifunctional grass cutter has a conventional grass cutting function and also has a grass mowing function; the additionally arranged grass winding prevention blades are matched with the inner side auxiliary blades, the shearing function can be achieved, and the phenomenon that grass is wound on the rotary blade shaft is thoroughly avoided. And 2, a plurality of inner side auxiliary blades matched with the grass winding prevention blades are arranged in the same circumference, so that the grass cutting efficiency is multiplied, and the operation efficiency is improved. And 3, the straws and the weeds are cut into shorter sizes, so that the straw returning and burying effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the parts of rotary cultivator for farming operation, concretely relates to a rotary cultivator structure. BACKGROUND

[0002] The main working components of the rotary cultivator used in the prior art farming operation are a blade shaft and a blade (rotary cultivator), and the blade shaft is welded with a blade seat. The structure of the rotary cultivator on the rotary cultivator mainly adopts a curved blade, and the curved blade adopts a spatial curve form with a long blade edge. According to the position of the blade edge, the blade edge can be divided into two parts, i.e., a tangent blade and a side cutting blade. The tangent blade surface and the side cutting blade surface are smoothly connected with a maximum included angle of about 120°. When the blade shaft drives the blade to rotate for operation, the side cutting blade first cuts the soil along the direction of the machine tool, and the soil first contacts the blade edge close to the center of the rotary shaft. Under the action of the curved blade, the blade edge part cuts the soil, and the wedge angle of the inner surface of the tangent part and the side surface of the side cutting part in contact with the cut soil realize the functions of breaking the soil and throwing the soil, thereby completing the tasks of cutting the soil, breaking the soil and turning the soil. Since the side cutting blade of the curved rotary cultivator is in an arc shape, a certain amount of sliding cutting is generated in the rotation process, part of the field weeds can be cut, and the problem of weed winding is solved to a certain extent. However, the currently promoted curved rotary cultivator has the following shortcomings: 1. The problem of grass winding around the blade shaft is not completely solved, and manual cleaning is required during operation, which seriously affects the efficiency of farming. 2. The curved rotary cultivator has poor cutting function, resulting in long cut-off straw and weeds, poor soil entry effect, and affecting the overall effect of straw returning to the field.

[0003] Chinese patent CN103250480A discloses a non-winding grass combined rotary cultivator, which reduces the winding of the blade seat by welding a grass cutting blade on the rotary cultivator seat. The grass cutting blade can reduce the winding of the blade seat, but cannot reduce the winding of the blade shaft by weeds and straw.

[0004] Chinese patent CN219938879U applied by the inventor discloses a rotary cultivator structure, which has simple structure, strong grass cutting function and can partially solve the problem of grass winding around the blade shaft. However, the following problems are found in actual application, i.e., during the process of cutting the soil, breaking the soil and turning the soil by the curved blade and the secondary blade, the uncut straw and weeds will still form grass winding around the output shaft outside the secondary blade and the gearbox, which affects the working efficiency. Therefore, a rotary cultivator capable of solving the problem of grass winding around the blade shaft of the matching structure of the curved blade and the secondary blade is needed in production. SUMMARY

[0005] The utility model wants to solve the problem in providing a rotary cultivator device.

[0006] The utility model discloses the following technical scheme: including bending blade and vice blade, the bending blade is installed on the output shaft of gearbox, bending blade is equipped with tangent part and side cutting part, vice blade is fixed in side cutting part in the position close to tangent part, vice blade face is perpendicular to side cutting part face, vice blade is equipped with with vice blade face perpendicular base, and base is equipped with first assembly hole, and side cutting part corresponding position is equipped with second assembly hole, and vice blade is installed in side cutting part through bolt, vice blade includes the inside vice blade of installation position close to gearbox, still include anti -entangling grass blade, the anti -entangling grass blade is fixed on the gearbox through an installation seat, and the position matching relation of anti -entangling grass blade and inside vice blade is staggered shearing matching.

[0007] An improvement is, still including a mounting seat 11, the anti -entangling grass blade 10 is fixed on the gearbox 3 through mounting seat 11.This structure, it is convenient with ordinary gearbox 3 matching.

[0008] Its principle is: bending blade is installed on the output shaft of gearbox.The utility model is based on the structure of bending blade and vice blade, and additionally adds anti -entangling grass blade, and anti -entangling grass blade is fixed on the gearbox, and anti -entangling grass blade and inside vice blade are shearing matching.In the process that bending blade and vice blade normally complete cutting soil, soil, and turning over, due to the shearing action of anti -entangling grass blade and inside vice blade, inside vice blade is rotated one circle and is jointly acted with anti -entangling grass blade, and plays shearing action once, and long grass thrown on the output shaft is sheared into grass clippings in working process, and the phenomenon of grass entanglement of rotary tillage knife shaft is completely avoided.A group of bending blades (the number of each group is generally three) are respectively arranged at both ends of rotary tillage knife roll conventionally, and the bending blades of the same group rotate in the same circumference.The technical scheme is specifically applied to product manufacturing, and inside vice blade is arranged on each bending blade in the bending blade of one group close to gearbox, and each inside vice blade is sheared with anti -entangling grass blade fixed on the gearbox due to rotation in the same circumference in working, and therefore, the shearing efficiency can be doubled.

[0009] An improvement is, still including a mounting seat, the anti -entangling grass blade is fixed on the gearbox through mounting seat.This structure, it is convenient ordinary gearbox matching.

[0010] The utility model has the following advantages: 1, the device has the conventional grass cutting function, and also has the grass shearing function.The matching of the additional anti -entangling grass blade and inside vice blade can play shearing action, and the inside vice blade is rotated one circle and plays shearing action once with the anti -entangling grass blade, and long grass thrown on the output shaft is sheared into grass clippings in working process, and the phenomenon of grass entanglement of rotary tillage knife shaft is completely avoided.2, multiple inside vice blades matched with anti -entangling grass blade are arranged in the same circumference, and the shearing efficiency is doubled, and the working efficiency is improved.3, the straw and weeds are cut into shorter size, and the straw is better in the effect of returning to field. Attached Figure Description

[0011] Fig. 1 This is a schematic diagram of the structural principle of one embodiment of the present invention.

[0012] Fig. 2 This is a schematic diagram of a curved blade mounted on a tool holder.

[0013] Fig. 3 This is a schematic diagram of the secondary blade structure.

[0014] In the figure, there is a curved blade 1, a secondary blade 2, a gearbox 3, an output shaft 4, a tangent section 5, a side tangent section 6, a first mounting hole 7, a second mounting hole 8, an inner secondary blade 9, an anti-tangle blade 10, and a mounting base 11. Detailed Implementation

[0015] like Figs. 1 to 3 As shown, one embodiment of this utility model includes a curved blade 1 and a secondary blade 2. The curved blade 1 is mounted on the output shaft 4 of the gearbox 3. The curved blade 1 has a tangent portion 5 and a side-cutting portion 6. The secondary blade 2 is fixed to the side-cutting portion 6 near the tangent portion 5. The blade surface of the secondary blade 2 is perpendicular to the blade surface of the side-cutting portion 6. The secondary blade 2 has a base perpendicular to the blade surface of the secondary blade 2. The base has a first mounting hole 7. The side-cutting portion 6 has a second mounting hole 8 at a corresponding position. The secondary blade 2 is mounted to the side-cutting portion 6 by bolts. The secondary blade 2 includes an inner secondary blade 9 with an installation position close to the gearbox 3, and also includes an anti-tangle blade 10. The anti-tangle blade 10 is fixed to the gearbox 3. The positional matching relationship between the anti-tangle blade 10 and the inner secondary blade 9 is a staggered shearing matching.

[0016] The principle is that the curved blade 1 is installed on the output shaft 4 of the gearbox 3. The utility model discloses on the basis of the structure that the auxiliary blade 2 is additionally arranged on the curved blade 1, additionally add the grass entangling prevention blade 10, the grass entangling prevention blade 10 is fixed on the gearbox 3, and the grass entangling prevention blade 10 and the inside auxiliary blade 9 are shearing matching. In the process that the curved blade 1 and the auxiliary blade 2 normally complete cutting soil, soil crushing, soil turning, because of the shearing action of the grass entangling prevention blade 10 and the inside auxiliary blade 9, the inside auxiliary blade 9 is rotated one circle and is jointly acted with the grass entangling prevention blade 10, plays once shearing action, and long grass thrown on the output shaft 4 is sheared into grass clippings in working process, and the grass entangling phenomenon of rotary tillage knife shaft is completely avoided. The rotary tillage knife roller both ends are normally respectively arranged with a group of curved blades 1 (the number of each group is generally three), and the curved blades 1 of same group rotate in the same circle and work. The technical scheme is specifically applied to product manufacturing, and in the group of curved blades 1 close to the gearbox 3 side, the inside auxiliary blade 9 is arranged on each curved blade 1, and because of rotating in the same circle during working, each inside auxiliary blade 9 is formed with the grass entangling prevention blade 10 fixed on the gearbox 3 and is sheared, so that the shearing efficiency can be doubled.

[0017] An improvement is that a mounting seat 11 is further included, and the grass entangling prevention blade 10 is fixed on the gearbox 3 through the mounting seat 11. This structure is convenient for matching with the ordinary gearbox 3.

[0018] The utility model is not limited to the specific structure of the above embodiment, and equivalent transformation of other similar structures falls within the protection scope of the utility model.

Claims

1. A rotary tiller device, comprising a curved blade and a secondary blade, wherein the curved blade is mounted on the output shaft of a gearbox, the curved blade having a tangent portion and a side-cutting portion, the secondary blade being fixed to the side-cutting portion near the tangent portion, the blade surface of the secondary blade being perpendicular to the blade surface of the side-cutting portion, the secondary blade having a base perpendicular to the blade surface of the secondary blade, the base having a first mounting hole, the side-cutting portion having a second mounting hole at a corresponding position, the secondary blade being mounted to the side-cutting portion by bolts, the secondary blade including an inner secondary blade with an installation position close to the gearbox, characterized in that: The grass-entangling-preventing blade is fixed on the gearbox, and the position matching relationship between the grass-entangling-preventing blade and the inner side secondary blade is staggered shearing matching.

2. A rotary tillage tool as claimed in claim 1, wherein: The grass-entangling-preventing blade is fixed on the gearbox through the mounting seat.

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