A method for distributing knife shafts of rotary tiller

Abstract

The present invention discloses a method for distributing a rotary tiller blade shaft, wherein an A-side curved blade arrangement area, a middle curved blade arrangement area and a B-side curved blade arrangement area are arranged axially along the rotary tiller blade shaft, a first rotary tillage area and a second rotary tillage area are arranged in a staggered manner around the circumference of the rotary tiller blade shaft, curved blades with opposite directions are arranged in the first rotary tillage area relative to the A-side curved blade arrangement area and the B-side curved blade arrangement area, and curved blades are arranged in the second rotary tillage area relative to the middle curved blade arrangement area; and a third rotary tillage area and a transition area are interspersed between the first rotary tillage area and the second rotary tillage area, and curved blades are installed in the third rotary tillage area in sequence relative to the A-side curved blade arrangement area, the middle curved blade arrangement area and the B-side curved blade arrangement area, so that when the rotary tiller blade shaft 100 rotates, the soil can be alternately "alternately tilled the soil on both sides and the middle of the blade shaft" and "tilled one end of the A side, the middle and one end of the B side of the blade shaft in sequence", thereby increasing the tillage efficiency, and the entire tillage process is approximately random, so that the tilled soil is uniform.

Description

Technical Field

[0001] The invention relates to the technical field of rotary tillers, and in particular to a knife shaft distribution method for rotary tillers. Background Art

[0002] A rotary tiller is a tilling machine that is used with a tractor to complete ploughing and harrowing operations. It is divided into three types according to the configuration of its rotary tiller blade: horizontal shaft type, vertical shaft type and inclined shaft type. The blades of the horizontal shaft rotary tillers currently produced in my country are generally arranged in a double helix pattern. Although they can better meet the requirements of rotary tillage, the following problems still occur in actual application:

[0003] 1. Since the blades on the knife shaft are arranged in two spiral lines with an interval of 180° (the left curved blade is arranged in one spiral line, and the right curved blade is arranged in another spiral line), and the rotation direction of the two spiral lines is consistent, the rotating curved blades on the knife shaft will transport the soil along the direction of the spiral line when working, causing the soil or straw to move sideways. Therefore, the surface after plowing is likely to have more soil on one side and less soil on the other side;

[0004] 2. With this blade arrangement method, the number of blades is large and the tillage resistance is large, which makes the manufacturing cost of the rotary tiller high and the working efficiency of the rotary tiller low. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method for distributing the blade shafts of a rotary tiller, and the specific technical solution is as follows:

[0006] A method for distributing a rotary tiller blade shaft, wherein the two ends of the rotary tiller blade shaft form an A end and a B end, and the outer surface of the rotary tiller blade shaft is provided with a plurality of A-direction curved knives and B-direction curved knives, wherein the A-direction curved knives are inclined toward the A end, and the B-direction curved knives are inclined toward the B end;

[0007] The outer side of the rotary tiller blade shaft is arranged along the direction from the A end to the B end with an A-side curved blade arrangement area, a middle curved blade arrangement area and a B-side curved blade arrangement area, and the A-side curved blade arrangement area, the middle curved blade arrangement area and the B-side curved blade arrangement area all include a plurality of circumferential positioning parts connected in series, and the circumferential positioning parts surround the circumference of the rotary tiller blade shaft, and at least one A-direction curved blade or B-direction curved blade is installed on each of the circumferential positioning parts, wherein the number of circumferential positioning parts in the A-side curved blade arrangement area is equal to the number of circumferential positioning parts in the B-side curved blade arrangement area;

[0008] The outer side of the rotary tiller blade shaft is provided with a staggered first rotary tillage area and a second rotary tillage area along its circumference, and a third rotary tillage area and a transition area interlaced between the first rotary tillage area and the second rotary tillage area, the first rotary tillage area and the third rotary tillage area each include a plurality of axial positioning portions arranged side by side, the second rotary tillage area and the transition area each include at least one axial positioning portion, the axial positioning portion extends axially along the rotary tiller blade shaft, and at most one A-direction curved blade or B-direction curved blade is installed on each of the axial positioning portions;

[0009] The distribution method includes:

[0010] At least one A-side mounting point for mounting an A-direction scimitar or a B-direction scimitar is arranged in the first rotary tillage area relative to the A-side scimitar arrangement area, and a B-side mounting point for mounting an A-direction scimitar or a B-direction scimitar is arranged at each A-side mounting point relative to the B-side scimitar arrangement area, wherein the circumferential positioning portion where the A-side mounting point is located and the circumferential positioning portion where the B-side mounting point is located are symmetrical relative to the radial cross-section in the middle of the rotary tiller blade shaft, the axial positioning portion where the B-side mounting point is located is adjacent to the axial positioning portion where the A-side mounting point is located and is located behind the axial positioning portion where the A-side mounting point is located along the rotation direction of the rotary tiller blade shaft, if the A-side mounting point is installed with an A-direction scimitar, the corresponding B-side mounting point is installed with a B-direction scimitar; if the A-side mounting point is installed with a B-direction scimitar, the corresponding B-side mounting point is installed with an A-direction scimitar;

[0011] An A-direction scimitar or a B-direction scimitar is installed in the second rotary tillage area relative to the middle scimitar arrangement area;

[0012] A first B-direction scimitar is installed in the third rotary tillage area relative to the A-side scimitar arrangement area; a first A-direction scimitar is installed in the third rotary tillage area relative to the middle scimitar arrangement area, wherein the axial positioning portion where the first A-direction scimitar is located is adjacent to the axial positioning portion where the first B-direction scimitar is located and is located behind the axial positioning portion where the first B-direction scimitar is located along the rotation direction of the rotary tiller blade shaft; a second A-direction scimitar is installed in the third rotary tillage area relative to the B-side scimitar arrangement area, wherein the axial positioning portion where the second A-direction scimitar is located is adjacent to the axial positioning portion where the first A-direction scimitar is located and is located behind the axial positioning portion where the first A-direction scimitar is located along the rotation direction of the rotary tiller blade shaft, and the circumferential positioning portion where the second A-direction scimitar is located is symmetrical with the circumferential positioning portion where the first B-direction scimitar is located relative to the radial cross-section in the middle of the rotary tiller blade shaft;

[0013] The transition zone is not equipped with the A-direction scimitar or the B-direction scimitar.

[0014] Preferably, the first rotary tillage zone includes:

[0015] An outer rotary tillage partition, wherein the outer rotary tillage partition relative to the A-side curved blade arrangement area is used to install the A-side curved blade;

[0016] The inner rotary tillage partition is used for installing the B-direction curved blade relative to the A-side curved blade arrangement area.

[0017] Preferably, the A-side curved blade arrangement area includes 12 circumferential positioning portions, and the 12 circumferential positioning portions are sequentially the first to the twelfth circumferential positioning portions along the direction from the A end to the B end;

[0018] The external rotary tillage sub-area comprises:

[0019] A first external rotary tillage partition, wherein the first external rotary tillage partition is provided with a third A-direction curved knife relative to the tenth circumferential positioning portion, and the first external rotary tillage partition is provided with a fourth A-direction curved knife relative to the eighth circumferential positioning portion, wherein the axial positioning portion where the fourth A-direction curved knife is located is located behind the axial positioning portion where the third A-direction curved knife is located along the rotation direction of the rotary tiller blade shaft;

[0020] A second outward-dividing rotary tillage partition is located behind the first outward-dividing rotary tillage partition along the rotation direction of the rotary tiller blade shaft, and the second outward-dividing rotary tillage partition is provided with the A-direction curved blade relative to the fifth circumferential positioning portion;

[0021] The third outward rotary tillage partition is located behind the second outward rotary tillage partition along the rotation direction of the rotary tiller blade shaft, the third outward rotary tillage partition is provided with a fifth A-direction curved knife relative to the ninth circumferential positioning portion, and the third outward rotary tillage partition is provided with a sixth A-direction curved knife relative to the fourth circumferential positioning portion, wherein the axial positioning portion where the sixth A-direction curved knife is located is located behind the fifth A-direction curved knife along the rotation direction of the rotary tiller blade shaft;

[0022] The internal rotary tillage partition comprises:

[0023] a first inner rotary tillage partition, wherein the first inner rotary tillage partition is provided with the B-direction curved blade at a position relative to the seventh circumferential positioning portion;

[0024] The second inner-shifted rotary tillage partition is located behind the first inner-shifted rotary tillage partition along the rotation direction of the rotary tiller blade shaft, the second inner-shifted rotary tillage partition is provided with a second B-direction curved knife relative to the tenth circumferential positioning portion, and the second inner-shifted rotary tillage partition is provided with a third B-direction curved knife relative to the fifth circumferential positioning portion, wherein the axial positioning portion where the third B-direction curved knife is located is located behind the axial positioning portion where the second B-direction curved knife is located along the rotation direction of the rotary tiller blade shaft;

[0025] The third inner-shifted rotary tillage partition is located behind the second inner-shifted rotary tillage partition along the rotation direction of the rotary tiller blade shaft, the third inner-shifted rotary tillage partition is provided with a fourth B-direction curved knife relative to the first circumferential positioning portion, the third inner-shifted rotary tillage partition is provided with a fifth B-direction curved knife relative to the eleventh circumferential positioning portion, wherein the axial positioning portion where the fifth B-direction curved knife is located is located behind the axial positioning portion where the fourth B-direction curved knife is located along the rotation direction of the rotary tiller blade shaft, the third inner-shifted rotary tillage partition is provided with a sixth B-direction curved knife relative to the sixth circumferential positioning portion, wherein the axial positioning portion where the sixth B-direction curved knife is located is located behind the axial positioning portion where the fifth B-direction curved knife is located along the rotation direction of the rotary tiller blade shaft;

[0026] The fourth inner rotary tillage partition is located behind the third inner rotary tillage partition along the rotation direction of the rotary tiller blade shaft, and the fourth inner rotary tillage partition is provided with the B-direction curved blade relative to the third circumferential positioning portion;

[0027] The fifth inner-shifted rotary tillage partition is located behind the fourth inner-shifted rotary tillage partition along the rotation direction of the rotary tiller blade shaft, and the fifth inner-shifted rotary tillage partition is provided with the B-direction curved blade relative to the twelfth circumferential positioning portion.

[0028] Preferably, the second rotary tillage partition includes:

[0029] A-direction rotary tillage partition, used for installing the A-direction curved blade;

[0030] The B-direction rotary tillage partition is used for installing the B-direction curved blade.

[0031] Preferably, the middle scimitar arrangement area includes 5 circumferential positioning portions, and the 5 circumferential positioning portions are sequentially the thirteenth to seventeenth circumferential positioning portions along the direction from the A end to the B end;

[0032] The A-direction rotary tillage partition includes:

[0033] A first A-direction rotary tillage partition, wherein the A-direction curved blade is disposed at a position of the first A-direction rotary tillage partition relative to the fifteenth circumferential positioning portion;

[0034] The second A-direction rotary tillage partition is located behind the first A-direction rotary tillage partition along the rotation direction of the rotary tiller blade shaft, and the second A-direction rotary tillage partition is provided with the A-direction curved blade relative to the fourteenth directional positioning portion;

[0035] The B-direction rotary tillage partition includes:

[0036] a first B-direction rotary tillage partition, wherein the first B-direction rotary tillage partition is provided with the B-direction curved blade at a position relative to the fifteenth circumferential positioning portion;

[0037] A second B-direction rotary tillage partition is located behind the first B-direction rotary tillage partition along the rotation direction of the rotary tiller blade shaft, and the second B-direction rotary tillage partition is provided with the B-direction curved blade relative to the seventeenth circumferential positioning portion;

[0038] The third B-direction rotary tillage partition is located behind the second B-direction rotary tillage partition along the rotation direction of the rotary tiller blade shaft, and the third B-direction rotary tillage partition is provided with the B-direction curved blade relative to the sixteenth circumferential positioning portion.

[0039] Preferably,

[0040] The first B-direction curved blade is arranged at a position in the third rotary tillage area relative to the second circumferential positioning portion;

[0041] The first A-direction curved blade is arranged in the third rotary tillage area relative to the thirteenth circumferential positioning portion.

[0042] Preferably, the transition zone comprises:

[0043] A first transition zone is provided between the second inner rotary tillage partition and the second B-direction rotary tillage partition;

[0044] The second transition zone is arranged between the second A-direction rotary tillage partition and the second outward rotary tillage partition.

[0045] Preferably, the first A-direction rotary tillage partition, the second A-direction rotary tillage partition, the first B-direction rotary tillage partition, the second B-direction rotary tillage partition, the third B-direction rotary tillage partition, the first transition zone and the second transition zone all include an axial positioning portion.

[0046] Preferably, along the rotation direction of the rotary tiller blade shaft, the third rotary tillage zone, the first inward rotary tillage partition, the first B-direction rotary tillage partition, the second inward rotary tillage partition, the first transition zone, the second B-direction rotary tillage partition, the third inward rotary tillage partition, the first A-direction rotary tillage partition, the fourth inward rotary tillage partition, the first outward rotary tillage partition, the second A-direction rotary tillage partition, the second transition zone, the second outward rotary tillage partition, the third B-direction rotary tillage partition, the third outward rotary tillage partition and the fifth inward rotary tillage partition are arranged in sequence.

[0047] Preferably,

[0048] The number of the axial positioning parts is 36;

[0049] The axial width of the circumferential positioning portion is (52±2) mm.

[0050] The present invention provides a method for distributing the blade shaft of a rotary tiller. By staggeredly arranging the first rotary tillage zone and the second rotary tillage zone along the circumference of the blade shaft of the rotary tiller, and the third rotary tillage zone and the transition zone interspersed between the first rotary tillage zone and the second rotary tillage zone, the blade shaft of the rotary tiller can alternately "till the soil on both sides and in the middle of the blade shaft alternately" and "till the soil in sequence at one end of the A side, the middle and one end of the B side of the blade shaft" when the blade shaft of the rotary tiller rotates, thereby increasing the tillage efficiency, and the entire tillage process is approximately random, so that the soil is uniform after tillage. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 A schematic diagram of the three-dimensional structure of a rotary tiller blade shaft provided in an embodiment of the present invention;

[0053] Figure 2 A front view of a rotary tiller blade shaft provided in an embodiment of the present invention;

[0054] Figure 3 A side view of a rotary tiller blade shaft provided in an embodiment of the present invention;

[0055] Figure 4 Axial arrangement diagram of the rotary tiller blade shaft provided in the embodiment of the present invention

[0056] Figure 5 A circumferential arrangement diagram of the rotary tiller blade shaft provided in an embodiment of the present invention;

[0057] Figure 6 A schematic diagram of the arrangement of the first rotary tillage zone, the second rotary tillage zone, the third rotary tillage zone and the transition zone provided in an embodiment of the present invention;

[0058] Figure 7 A schematic diagram of the arrangement of the A-direction curved blade and the B-direction curved blade provided in an embodiment of the present invention;

[0059] Figure 8 A schematic diagram of the distribution of the A-direction curved blade and the B-direction curved blade of Example 1 provided in an embodiment of the present invention;

[0060] Fig. 9 The surface development diagram of the rotary tiller blade shaft of Example 1 provided in the embodiment of the present invention.

[0061] Reference numerals

[0062] 100-rotary tiller blade shaft; 110-A end; 120-B end;

[0063] 200-A-direction curved knife; 201-first A-direction curved knife; 202-second A-direction curved knife; 203-third A-direction curved knife; 204-fourth A-direction curved knife; 205-fifth A-direction curved knife;

[0064] 300-B-direction curved knife; 301-first B-direction curved knife; 302-second B-direction curved knife; 303-third B-direction curved knife; 304-fourth B-direction curved knife; 305-fifth B-direction curved knife; 306-sixth B-direction curved knife;

[0065] 1-A side cutlass deployment area;

[0066] 2-Central scimitar deployment area;

[0067] 3-B side scimitar deployment area;

[0068] 4- circumferential positioning portion;

[0069] 5-first rotary tillage zone; 51-external rotary tillage zone; 511-first external rotary tillage zone; 512-second external rotary tillage zone; 513-third external rotary tillage zone; 52-internal rotary tillage zone; 521-first internal rotary tillage zone; 522-second internal rotary tillage zone; 523-third internal rotary tillage zone; 524-fourth internal rotary tillage zone; 525-fifth internal rotary tillage zone;

[0070] 6-second rotary tillage zone; 61-A direction rotary tillage zone; 611-first A direction rotary tillage zone; 612-second A direction rotary tillage zone; 62-B direction rotary tillage zone; 621-first B direction rotary tillage zone; 622-second B direction rotary tillage zone; 623-third B direction rotary tillage zone;

[0071] 7-the third rotary tillage area;

[0072] 8-transition zone; 81-first transition zone; 82-second transition zone;

[0073] 9-Axial positioning portion. DETAILED DESCRIPTION

[0074] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0075] It should be noted that similar reference numerals denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

[0076] See also Figures 1 to 9 The present embodiment provides a method for distributing the blade shaft of a rotary tiller, wherein the two ends of the blade shaft 100 of the rotary tiller form an A end 110 and a B end 120, and the outer surface of the blade shaft 100 of the rotary tiller is provided with a plurality of A-direction curved blades 200 and B-direction curved blades 300, wherein the blade heads of the A-direction curved blades 200 are inclined toward the A end 110, and the blade heads of the B-direction curved blades 300 are inclined toward the B end 120.

[0077] See also Figure 4 The outer side of the rotary tiller blade shaft 100 is arranged along the direction from the A end 110 to the B end 120 with an A-side curved blade layout area 1, a middle curved blade layout area 2 and a B-side curved blade layout area 3. The A-side curved blade layout area 1, the middle curved blade layout area 2 and the B-side curved blade layout area 3 all include a plurality of circumferential positioning portions 4 connected in series. The circumferential positioning portions 4 surround the circumference of the rotary tiller blade shaft 100. At least one A-direction curved blade 200 or B-direction curved blade 300 is installed on each circumferential positioning portion 4, wherein the number of circumferential positioning portions 4 in the A-side curved blade layout area 1 is equal to the number of circumferential positioning portions 4 in the B-side curved blade layout area 3.

[0078] See also Figure 5 The outer side of the rotary tiller shaft 100 is circumferentially surrounded by a first rotary tillage zone 5 and a second rotary tillage zone 6 arranged alternately, and a third rotary tillage zone 7 and a transition zone 8 are interspersed between the first rotary tillage zone 5 and the second rotary tillage zone 6. The first rotary tillage zone 5 and the third rotary tillage zone 7 each include a plurality of axial positioning portions 9 arranged side by side, and the second rotary tillage zone 6 and the transition zone 8 each include at least one axial positioning portion 9. The axial positioning portion 9 extends axially along the rotary tiller shaft 100, and at most one A-direction curved blade 200 or B-direction curved blade 300 is installed on each axial positioning portion 9.

[0079] The distribution methods include:

[0080] At least one A-side mounting point for mounting an A-direction scimitar or a B-direction scimitar is arranged in the first rotary tillage area 5 relative to the A-side scimitar arrangement area 1, and a B-side mounting point for mounting an A-direction scimitar or a B-direction scimitar is arranged at each A-side mounting point relative to the B-side scimitar arrangement area 3, wherein the circumferential positioning portion 4 where the A-side mounting point is located is symmetrical with the circumferential positioning portion 4 where the B-side mounting point is located relative to the radial cross-section in the middle of the rotary tiller blade shaft 100, the axial positioning portion 9 where the B-side mounting point is located is adjacent to the axial positioning portion 9 where the A-side mounting point is located and is located behind the axial positioning portion 9 where the A-side mounting point is located along the rotation direction of the rotary tiller blade shaft 100. If the A-side mounting point is mounted with an A-direction scimitar, the corresponding B-side mounting point is mounted with a B-direction scimitar. If the A-side mounting point is mounted with a B-direction scimitar, the corresponding B-side mounting point is mounted with an A-direction scimitar.

[0081] An A-direction scimitar or a B-direction scimitar is installed in the second rotary tillage area 6 relative to the middle scimitar arrangement area 2.

[0082] A first B-direction scimitar 301 is installed in the third rotary tillage zone 7 relative to the A-side scimitar arrangement zone 1. A first A-direction scimitar 201 is installed in the third rotary tillage zone 7 relative to the middle scimitar arrangement zone 2, wherein the axial positioning portion 9 where the first A-direction scimitar 201 is located is adjacent to the axial positioning portion 9 where the first B-direction scimitar 301 is located and is located behind the axial positioning portion 9 where the first B-direction scimitar 301 is located along the rotation direction of the rotary tiller blade shaft 100. A second A-direction scimitar 202 is installed in the third rotary tillage zone 7 relative to the B-side scimitar arrangement zone 3, wherein the axial positioning portion 9 where the second A-direction scimitar 202 is located is adjacent to the axial positioning portion 9 where the first A-direction scimitar 201 is located and is located behind the axial positioning portion 9 where the first A-direction scimitar 201 is located along the rotation direction of the rotary tiller blade shaft 100, and the circumferential positioning portion 4 where the second A-direction scimitar 202 is located is symmetrical with respect to the radial cross section in the middle of the rotary tiller blade shaft 100.

[0083] The transition zone 8 is not equipped with an A-direction scimitar or a B-direction scimitar.

[0084] Among them, the blade arrangement on the rotary tiller blade shaft must meet the following requirements:

[0085] 1. When two or more blades are configured in the same rotating plane, the amount of soil cut should be equal to achieve good soil crushing quality and a smooth ditch bottom after plowing.

[0086] 2. During one rotation of the knife shaft, each time the knife shaft rotates an equal angle, at the same phase angle, it must be a curved knife, so that the torque is more balanced, the torque fluctuation amplitude is reduced, and the working stability and uniform load of the knife shaft are ensured.

[0087] 3. The axial spacing between adjacent teeth is generally greater than the width of a single blade in order to avoid missed tillage zones.

[0088] 4. The left-curved blade and the right-curved blade should be inserted into the soil alternately to balance the lateral pressure on the bearings at both ends of the blade shaft, so as to reduce the torque of the rotary tiller blade on the center of gravity of the rotary tiller and maintain the linearity of the rotary tiller unit during operation.

[0089] 5. The axial distance between the blades that are successively inserted into the soil on the blade shaft should be as large as possible, and the angle between two adjacent axial curved blades should be increased as much as possible to avoid interference or blockage.

[0090] See also Figure 5In the first rotary tillage area 5, the scimitars arranged in the scimitar arrangement area 1 relative to the A side and the scimitar arrangement area 3 relative to the B side are symmetrical in the vertical direction relative to the middle vertical axis of the rotary tiller blade shaft 100, and the scimitars installed on both sides are in opposite directions, so that the blade shaft load of the rotary tiller blade shaft 100 is uniform when working, and because after the scimitars in the scimitar arrangement area 1 on the A side are buried in the soil, the scimitars in the scimitar arrangement area on the B side are also buried in the soil, thereby ensuring that the lateral pressure on the rotary tiller blade shaft 100 is balanced.

[0091] Please continue to see Figure 5 The curved blades on the first rotary tillage zone 5 can turn over the soil on both sides of the rotary tiller blade shaft 100, and the second rotary tillage zone 6 can turn over the soil in the middle of the rotary tillage zone 100. The first rotary tillage zone 5 and the second rotary tillage zone 6 are staggered so that the soil on both sides and in the middle of the rotary tiller blade shaft 100 can be turned over alternately, which not only increases the turning efficiency but also avoids soil interference and blockage on the curved blades.

[0092] The curved blade installed on the third rotary tillage zone 7 tills the soil in sequence along the direction of one end, the middle and one end of the B side of the rotary tiller blade shaft 100, which is different from the staggered tillage method of the first rotary tillage zone 5 and the second rotary tillage zone 6. Since the rotary tiller blade shaft 100 rotates at a relatively fast speed, usually 200 to 300 rpm, when the rotary tiller blade shaft 100 rotates, the soil can be alternately tilled by "alternately tilling the soil on both sides and the middle of the blade shaft" and "tilling one end, the middle and one end of the B side of the blade shaft in sequence", thereby further increasing the tillage efficiency.

[0093] No curved blade is installed in the transition zone 8, and the transition zone 8 is interspersed between the first rotary tillage zone 5 and the second rotary tillage zone 6, so that when the rotary tiller blade shaft 100 rotates to the side of the transition zone 8 facing the soil, the rotary tiller blade shaft 100 can move slightly downward, thereby increasing the rotary tillage depth.

[0094] The present embodiment provides a method for distributing the blade shaft of a rotary tiller. By staggeredly arranging the first rotary tillage zone 5 and the second rotary tillage zone 6 along the circumference of the blade shaft of the rotary tiller, and the third rotary tillage zone 7 and the transition zone 8 interlaced between the first rotary tillage zone 5 and the second rotary tillage zone 6, the blade shaft 100 of the rotary tiller can alternately "till the soil on both sides and in the middle of the blade shaft" and "till the soil one end of the A side, the middle and one end of the B side of the blade shaft" when rotating, thereby increasing the tillage efficiency and making the entire tillage process approximately random, so that the soil is uniform after tillage.

[0095] For further information, see Figure 6 The first rotary tillage area 5 includes an outer rotary tillage partition 51 and an inner rotary tillage partition 52.

[0096] The outer rotary tillage partition 51 relative to the A-side curved blade arrangement area 1 is used for installing the A-side curved blade.

[0097] The inner rotary tillage partition 52 is used for installing the B-direction curved blade relative to the A-side curved blade arrangement area 1.

[0098] For further information, see Figure 7 The curved blade arrangement area 1 on the A side includes 12 circumferential positioning portions 4, and the 12 circumferential positioning portions 4 are sequentially the first to the twelfth circumferential positioning portions along the direction from the A end to the B end.

[0099] The external rotary tillage partition 51 includes a first external rotary tillage partition 511 , a second external rotary tillage partition 512 and a third external rotary tillage partition 513 .

[0100] The first outward-shifted rotary tillage partition 511 is provided with a third A-direction curved blade 203 relative to the tenth circumferential positioning portion, and the first outward-shifted rotary tillage partition 511 is provided with a fourth A-direction curved blade 204 relative to the eighth circumferential positioning portion, wherein the axial positioning portion 9 where the fourth A-direction curved blade 204 is located is located behind the axial positioning portion 9 where the third A-direction curved blade 203 is located along the rotation direction of the rotary tiller blade shaft 100.

[0101] The second outward-shifted rotary tillage partition 512 is located behind the first outward-shifted rotary tillage partition 511 along the rotation direction of the rotary tiller blade shaft 100, and the second outward-shifted rotary tillage partition 512 is provided with an A-direction curved blade relative to the fifth circumferential positioning portion.

[0102] The third outward-moving rotary tillage partition 513 is located behind the second outward-moving rotary tillage partition 512 along the rotation direction of the rotary tiller blade shaft 100, the third outward-moving rotary tillage partition 513 is provided with a fifth A-direction curved knife 205 relative to the ninth circumferential positioning portion, and the third outward-moving rotary tillage partition 513 is provided with a sixth A-direction curved knife 206 relative to the fourth circumferential positioning portion, wherein the axial positioning portion 9 where the sixth A-direction curved knife 206 is located is located behind the fifth A-direction curved knife 205 along the rotation direction of the rotary tiller blade shaft 100.

[0103] The inner rotary tillage partition 52 includes a first inner rotary tillage partition 521 , a second inner rotary tillage partition 522 , a third inner rotary tillage partition 523 , a fourth inner rotary tillage partition 524 and a fifth inner rotary tillage partition 525 .

[0104] The first inner rotary tillage partition 521 is provided with a B-direction curved knife at a position relative to the seventh circumferential positioning portion.

[0105] The second inner-shift rotary tillage partition 522 is located behind the first inner-shift rotary tillage partition 521 along the rotation direction of the rotary tiller blade shaft 100, the second inner-shift rotary tillage partition 522 is provided with a second B-direction curved blade 302 relative to the tenth circumferential positioning portion, the second inner-shift rotary tillage partition 522 is provided with a third B-direction curved blade 303 relative to the fifth circumferential positioning portion, wherein the axial positioning portion 9 where the third B-direction curved blade 303 is located is located behind the axial positioning portion 9 where the second B-direction curved blade 302 is located along the rotation direction of the rotary tiller blade shaft 100.

[0106] The third inner-shift rotary tillage partition 523 is located behind the second inner-shift rotary tillage partition 522 along the rotation direction of the rotary tiller blade shaft 100, the third inner-shift rotary tillage partition 523 is provided with a fourth B-direction curved blade 304 relative to the first circumferential positioning portion, the third inner-shift rotary tillage partition 523 is provided with a fifth B-direction curved blade 305 relative to the eleventh circumferential positioning portion, wherein the axial positioning portion 9 where the fifth B-direction curved blade 305 is located is located behind the axial positioning portion 9 where the fourth B-direction curved blade 304 is located along the rotation direction of the rotary tiller blade shaft 100, the third inner-shift rotary tillage partition 523 is provided with a sixth B-direction curved blade 306 relative to the sixth circumferential positioning portion, wherein the axial positioning portion 9 where the sixth B-direction curved blade 306 is located is located behind the axial positioning portion 9 where the fifth B-direction curved blade 305 is located along the rotation direction of the rotary tiller blade shaft 100.

[0107] The fourth inner-shifting rotary tillage partition 524 is located behind the third inner-shifting rotary tillage partition 523 along the rotation direction of the rotary tiller blade shaft 100, and the fourth inner-shifting rotary tillage partition 524 is provided with a B-direction curved blade relative to the third circumferential positioning portion.

[0108] The fifth inner-shifting rotary tillage partition 525 is located behind the fourth inner-shifting rotary tillage partition 524 along the rotation direction of the rotary tiller blade shaft 100, and the fifth inner-shifting rotary tillage partition 525 is provided with a B-direction curved blade relative to the twelfth circumferential positioning portion.

[0109] Figure 7 In the figure, the first to twelfth circumferential positioning portions are marked with numbers "1 to 12" on the horizontal axis respectively, and the numerical symbols "(1) to (12)" on the horizontal axis are the symmetrical positions of the circumferential positioning portion 4 in the scimitar layout area 3 on the B side relative to the circumferential positioning area 4 in the scimitar layout area 1 on the A side.

[0110] For further information, see Figure 6 The second rotary tillage partition 6 includes an A-direction rotary tillage partition 61 and a B-direction rotary tillage partition 62.

[0111] The A-direction rotary tillage partition 61 is used for installing the A-direction curved blade.

[0112] The B-direction rotary tillage partition 62 is used for installing the B-direction curved blade.

[0113] For further information, see Figure 7 The middle scimitar arrangement area 2 includes five circumferential positioning portions 4, and the five circumferential positioning portions 4 are the thirteenth to seventeenth circumferential positioning portions in the direction from the A end to the B end.

[0114] The A-direction rotary tillage partition 61 includes a first A-direction rotary tillage partition 611 and a second A-direction rotary tillage partition 612 .

[0115] The first A-direction rotary tillage partition 611 is provided with an A-direction curved knife at a position opposite to the fifteenth circumferential positioning portion.

[0116] The second A-direction rotary tillage partition 612 is located behind the first A-direction rotary tillage partition 611 along the rotation direction of the rotary tiller blade shaft 100, and the second A-direction rotary tillage partition 612 is provided with an A-direction curved blade at a position relative to the fourteenth directional positioning portion.

[0117] The B-direction rotary tillage partition 62 includes a first B-direction rotary tillage partition 621 , a second B-direction rotary tillage partition 622 and a third B-direction rotary tillage partition 623 .

[0118] The first B-direction rotary tillage partition 621 is provided with a B-direction curved knife at a position relative to the fifteenth circumferential positioning portion.

[0119] The second B-direction rotary tillage partition 622 is located behind the first B-direction rotary tillage partition 621 along the rotation direction of the rotary tiller blade shaft 100, and the second B-direction rotary tillage partition 622 is provided with a B-direction curved blade relative to the seventeenth circumferential positioning portion.

[0120] The third B-direction rotary tillage partition 623 is located behind the second B-direction rotary tillage partition 622 along the rotation direction of the rotary tiller blade shaft 100, and the third B-direction rotary tillage partition 623 is provided with a B-direction curved blade relative to the sixteenth circumferential positioning portion.

[0121] Figure 7 In the figure, the thirteenth to seventeenth circumferential positioning parts are marked on the horizontal axis with numbers "13-17" in sequence.

[0122] For further information, please see Figure 7 :

[0123] The first B-direction curved blade 301 is arranged in the third rotary tillage zone 7 relative to the second circumferential positioning portion.

[0124] The first A-direction curved blade 201 is arranged in the third rotary tillage zone 7 relative to the thirteenth circumferential positioning portion.

[0125] Further, the transition zone 8 includes a first transition zone 81 and a second transition zone 82 .

[0126] The first transition zone 81 is arranged between the second inner rotary tillage partition 522 and the second B-direction rotary tillage partition 622 .

[0127] The second transition zone 82 is arranged between the second A-direction rotary tillage partition 612 and the second outward rotary tillage partition 512 .

[0128] For further information, please see Figure 7 The first A-direction rotary tillage partition 611, the second A-direction rotary tillage partition 612, the first B-direction rotary tillage partition 621, the second B-direction rotary tillage partition 622, the third B-direction rotary tillage partition 623, the first transition zone 81 and the second transition zone 82 all include an axial positioning portion.

[0129] For further information, please see Figure 7Along the rotation direction of the rotary tillage machine shaft 100, the third rotary tillage zone 7, the first inward rotary tillage partition 521, the first B-direction rotary tillage partition 621, the second inward rotary tillage partition 522, the first transition zone 81, the second B-direction rotary tillage partition 622, the third inward rotary tillage partition 523, the first A-direction rotary tillage partition 611, the fourth inward rotary tillage partition 524, the first outward rotary tillage partition 511, the second A-direction rotary tillage partition 612, the second transition zone 82, the second outward rotary tillage partition 512, the third B-direction rotary tillage partition 623, the third outward rotary tillage partition 513 and the fifth inward rotary tillage partition 525 are arranged in sequence.

[0130] For further information, please see Figure 7 The number of the axial positioning parts 9 is 36. The phase angle of each axial positioning part 9 relative to the axis of the rotary tiller blade shaft 100 is 10°.

[0131] exist Figure 7 In the figure, the front side of the third rotary tillage zone 7 is set to 0°, and the axial positioning parts 9 on the rotary tiller blade shaft 100 where the phase angles are 0° to 360° are marked on the vertical axis with numbers "1 to 36" in sequence.

[0132] Furthermore, the axial width of the circumferential positioning portion 4 is 52±2 mm to achieve a good tillage effect.

[0133] Specific examples are provided below. The provided examples may enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way.

[0134] Embodiment 1:

[0135] See also Figure 8 , the horizontal axis represents the axial position of the rotary tiller blade shaft 100, the radial section position in the middle of the rotary tiller blade shaft 100 is set to "0", along the A end direction, the coordinates decrease successively, "(-1) ~ (-14)", along the B end direction, the coordinates increase successively, "1 ~ 14"; the vertical axis represents the circumferential position of the rotary tiller blade shaft 100, and each 10° relative to the axis of the rotary tiller blade shaft 100 is a coordinate point, a total of 36 coordinate points, "1 ~ 36"; in the figure, ● is the A-direction curved blade, ○ is the B-direction curved blade, and the distribution positions of the A-direction curved blade and the B-direction curved blade on the rotary tiller blade shaft 100 are as shown in Figure 8 As shown in the figure, the surface of the rotary tiller blade after actual distribution is shown in Fig. 9 shown.

[0136] Working principle:

[0137] See also Figure 5In the first rotary tillage area 5, the scimitars arranged in the scimitar arrangement area 1 relative to the A side and the scimitar arrangement area 3 relative to the B side are symmetrical in the vertical direction relative to the middle vertical axis of the rotary tiller blade shaft 100, and the scimitars installed on both sides are in opposite directions, so that the blade shaft load of the rotary tiller blade shaft 100 is uniform when working, and because after the scimitars in the scimitar arrangement area 1 on the A side are buried in the soil, the scimitars in the scimitar arrangement area on the B side are also buried in the soil, thereby ensuring that the lateral pressure on the rotary tiller blade shaft 100 is balanced.

[0138] Please continue to see Figure 5 The curved blades on the first rotary tillage zone 5 can turn over the soil on both sides of the rotary tiller blade shaft 100, and the second rotary tillage zone 6 can turn over the soil in the middle of the rotary tillage zone 100. The first rotary tillage zone 5 and the second rotary tillage zone 6 are staggered so that the soil on both sides and in the middle of the rotary tiller blade shaft 100 can be turned over alternately, which not only increases the turning efficiency but also avoids soil interference and blockage on the curved blades.

[0139] The curved blade installed on the third rotary tillage zone 7 tills the soil in sequence along the direction of one end, the middle and one end of the B side of the rotary tiller blade shaft 100A, which is different from the staggered tillage method of the first rotary tillage zone 5 and the second rotary tillage zone 6. Since the rotary tiller blade shaft 100 rotates at a relatively fast speed, usually 200 to 300 rpm, when the rotary tiller blade shaft 100 rotates, the soil can be alternately tilled by "alternately tilling the soil on both sides and the middle of the blade shaft" and "tilling one end, the middle and one end of the B side of the blade shaft in sequence", which further increases the tillage efficiency, and the entire tillage process is approximately random, so that the soil is uniform after tillage.

[0140] No curved blade is installed in the transition zone 8, and the transition zone 8 is interspersed between the first rotary tillage zone 5 and the second rotary tillage zone 6, so that when the rotary tiller blade shaft 100 rotates to the side of the transition zone 8 facing the soil, the rotary tiller blade shaft 100 can move slightly downward, thereby increasing the rotary tillage depth.

[0141] The principles and implementation methods of the present invention are described herein using specific examples, and the description of the above embodiments is only used to help understand the method and core ideas of the present invention. The above are only preferred implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention, which should be within the protection scope of the present invention.

Claims

1. A method for distributing blade shafts of a rotary tiller, characterized in that: The two ends of the rotary tiller blade shaft (100) form an A end (110) and a B end (120); a plurality of A-direction curved knives (200) and B-direction curved knives (300) are provided on the outer surface of the rotary tiller blade shaft (100); the blade heads of the A-direction curved knives (200) are inclined toward the A end (110), and the blade heads of the B-direction curved knives (300) are inclined toward the B end (120); The outer side of the rotary tiller blade shaft (100) is arranged along the direction from the A end (110) to the B end (120) with an A-side curved blade arrangement area (1), a middle curved blade arrangement area (2) and a B-side curved blade arrangement area (3); the A-side curved blade arrangement area (1), the middle curved blade arrangement area (2) and the B-side curved blade arrangement area (3) each include a plurality of circumferential positioning portions (4) connected in series; the circumferential positioning portions (4) surround the rotary tiller blade shaft (100) in a circumferential direction; each circumferential positioning portion (4) is mounted with at least one A-direction curved blade (200) or B-direction curved blade (300); the number of the circumferential positioning portions (4) of the A-side curved blade arrangement area (1) is equal to the number of the circumferential positioning portions (4) of the B-side curved blade arrangement area (3); The rotary tiller blade shaft (100) is provided with a staggered first rotary tillage zone (5) and a second rotary tillage zone (6) along its circumference on the outside thereof, and a third rotary tillage zone (7) and a transition zone (8) interlaced between the first rotary tillage zone (5) and the second rotary tillage zone (6); the first rotary tillage zone (5) and the third rotary tillage zone (7) each include a plurality of axial positioning portions (9) arranged side by side; the second rotary tillage zone (6) and the transition zone (8) each include at least one axial positioning portion (9); the axial positioning portion (9) extends axially along the rotary tiller blade shaft (100); and at most one A-direction curved blade (200) or B-direction curved blade (300) is mounted on each of the axial positioning portions (9); The distribution method includes: At least one A-side mounting point for mounting an A-direction scimitar or a B-direction scimitar is arranged in the first rotary tillage area (5) relative to the A-side scimitar arrangement area (1), and a B-side mounting point for mounting an A-direction scimitar or a B-direction scimitar is arranged at each A-side mounting point relative to the B-side scimitar arrangement area (3), wherein the circumferential positioning portion (4) where the A-side mounting point is located and the circumferential positioning portion (4) where the B-side mounting point is located are symmetrical relative to the radial cross section in the middle of the rotary tiller blade shaft (100), the axial positioning portion (9) where the B-side mounting point is located is adjacent to the axial positioning portion (9) where the A-side mounting point is located and is located behind the axial positioning portion (9) where the A-side mounting point is located along the rotation direction of the rotary tiller blade shaft (100), if the A-side mounting point is mounted with an A-direction scimitar, the corresponding B-side mounting point is mounted with a B-direction scimitar; if the A-side mounting point is mounted with a B-direction scimitar, the corresponding B-side mounting point is mounted with an A-direction scimitar; An A-direction curved blade or a B-direction curved blade is installed in the second rotary tillage area (6) relative to the middle curved blade arrangement area (2); A first B-direction curved blade (301) is installed in the third rotary tillage zone (7) relative to the A-side curved blade arrangement zone (1); a first A-direction curved blade (201) is installed in the third rotary tillage zone (7) relative to the middle curved blade arrangement zone (2), wherein the axial positioning portion (9) where the first A-direction curved blade (201) is located is adjacent to the axial positioning portion (9) where the first B-direction curved blade (301) is located and is located behind the axial positioning portion (9) where the first B-direction curved blade (301) is located along the rotation direction of the rotary tiller blade shaft (100); in the third rotary tillage zone (7) relative to the middle curved blade arrangement zone (2), the first A-direction curved blade (201) is located adjacent to the axial positioning portion (9) where the first B-direction curved blade (301) is located. A second A-direction curved blade (202) is installed in the curved blade arrangement area (3) on the B side, wherein the axial positioning portion (9) where the second A-direction curved blade (202) is located is adjacent to the axial positioning portion (9) where the first A-direction curved blade (201) is located and is located behind the axial positioning portion (9) where the first A-direction curved blade (201) is located along the rotation direction of the rotary tiller blade shaft (100), and the circumferential positioning portion (4) where the second A-direction curved blade (202) is located is symmetrical with the circumferential positioning portion (4) where the first B-direction curved blade (301) is located relative to the radial cross section in the middle of the rotary tiller blade shaft (100); The transition zone (8) is not equipped with the A-direction curved blade or the B-direction curved blade; Wherein, the first rotary tillage area (5) comprises: An outer rotary tillage partition (51), the outer rotary tillage partition (51) being used for installing the A-direction curved blade arrangement area (1) relative to the A-direction curved blade arrangement area; An inner rotary tillage partition (52), the inner rotary tillage partition (52) being used for installing the B-direction curved blade relative to the A-side curved blade arrangement area (1); The A-side curved blade arrangement area (1) comprises 12 circumferential positioning portions (4), and the 12 circumferential positioning portions (4) are sequentially the first to the twelfth circumferential positioning portions along the direction from the A end to the B end; The external rotary tillage partition (51) comprises: a first external rotary tillage partition (511), wherein the first external rotary tillage partition (511) is provided with a third A-direction curved blade (203) at a position relative to the tenth circumferential positioning portion, and the first external rotary tillage partition (511) is provided with a fourth A-direction curved blade (204) at a position relative to the eighth circumferential positioning portion, wherein the axial positioning portion (9) where the fourth A-direction curved blade (204) is located is located behind the axial positioning portion (9) where the third A-direction curved blade (203) is located along the rotation direction of the rotary tiller blade shaft (100); A second outward-moving rotary tillage partition (512) is located behind the first outward-moving rotary tillage partition (511) along the rotation direction of the rotary tiller blade shaft (100), and the second outward-moving rotary tillage partition (512) is provided with the A-direction curved blade at a position relative to the fifth circumferential positioning portion; A third external rotary tillage partition (513) is located behind the second external rotary tillage partition (512) along the rotation direction of the rotary tiller blade shaft (100); a fifth A-direction curved blade (205) is provided at the third external rotary tillage partition (513) relative to the ninth circumferential positioning portion; a sixth A-direction curved blade (206) is provided at the third external rotary tillage partition (513) relative to the fourth circumferential positioning portion; wherein the axial positioning portion (9) where the sixth A-direction curved blade (206) is located is located behind the fifth A-direction curved blade (205) along the rotation direction of the rotary tiller blade shaft (100); The inner rotary tillage partition (52) comprises: A first inner rotary tillage partition (521), wherein the first inner rotary tillage partition (521) is provided with the B-direction curved blade at a position relative to the seventh circumferential positioning portion; The second inner-shifting rotary tillage partition (522) is located behind the first inner-shifting rotary tillage partition (521) along the rotation direction of the rotary tiller blade shaft (100), the second inner-shifting rotary tillage partition (522) is provided with a second B-direction curved blade (302) relative to the tenth circumferential positioning portion, and the second inner-shifting rotary tillage partition (522) is provided with a third B-direction curved blade (303) relative to the fifth circumferential positioning portion, wherein the axial positioning portion (9) where the third B-direction curved blade (303) is located is located behind the axial positioning portion (9) where the second B-direction curved blade (302) is located along the rotation direction of the rotary tiller blade shaft (100); a third inner-shifted rotary tillage partition (523) which is located behind the second inner-shifted rotary tillage partition (522) along the rotation direction of the rotary tiller blade shaft (100); a fourth B-direction curved blade (304) is provided at the third inner-shifted rotary tillage partition (523) relative to the first circumferential positioning portion; a fifth B-direction curved blade (305) is provided at the third inner-shifted rotary tillage partition (523) relative to the eleventh circumferential positioning portion, wherein the axial positioning portion (9) where the fifth B-direction curved blade (305) is located is located behind the axial positioning portion (9) where the fourth B-direction curved blade (304) is located along the rotation direction of the rotary tiller blade shaft (100); a sixth B-direction curved blade (306) is provided at the third inner-shifted rotary tillage partition (523) relative to the sixth circumferential positioning portion, wherein the axial positioning portion (9) where the sixth B-direction curved blade (306) is located is located behind the axial positioning portion (9) where the fifth B-direction curved blade (305) is located along the rotation direction of the rotary tiller blade shaft (100); A fourth inner-shifting rotary tillage partition (524) is located behind the third inner-shifting rotary tillage partition (523) along the rotation direction of the rotary tiller blade shaft (100), and the fourth inner-shifting rotary tillage partition (524) is provided with the B-direction curved blade at a position relative to the third circumferential positioning portion; The fifth inner-shifting rotary tillage partition (525) is located behind the fourth inner-shifting rotary tillage partition (524) along the rotation direction of the rotary tiller blade shaft (100), and the fifth inner-shifting rotary tillage partition (525) is provided with the B-direction curved blade at a position relative to the twelfth circumferential positioning portion.

2. The distribution method according to claim 1, characterized in that: The second rotary tillage zone (6) comprises: A-direction rotary tillage partition (61), used for mounting the A-direction curved blade; The B-direction rotary tillage partition (62) is used for installing the B-direction curved blade.

3. The distribution method according to claim 2, characterized in that: The middle scimitar arrangement area (2) comprises five circumferential positioning portions (4), and the five circumferential positioning portions (4) are the thirteenth to seventeenth circumferential positioning portions in the direction from the A end to the B end; The A-direction rotary tillage partition (61) comprises: A first A-direction rotary tillage partition (611), wherein the first A-direction rotary tillage partition (611) is provided with the A-direction curved blade at a position relative to the fifteenth circumferential positioning portion; A second A-direction rotary tillage partition (612) is located behind the first A-direction rotary tillage partition (611) along the rotation direction of the rotary tiller blade shaft (100), and the second A-direction rotary tillage partition (612) is provided with the A-direction curved blade at a position relative to the fourteenth-direction positioning portion; The B-direction rotary tillage partition (62) includes: A first B-direction rotary tillage partition (621), wherein the first B-direction rotary tillage partition (621) is provided with the B-direction curved blade at a position relative to the fifteenth circumferential positioning portion; A second B-direction rotary tillage partition (622) is located behind the first B-direction rotary tillage partition (621) along the rotation direction of the rotary tiller blade shaft (100), and the second B-direction rotary tillage partition (622) is provided with the B-direction curved blade at a position relative to the seventeenth circumferential positioning portion; The third B-direction rotary tillage partition (623) is located behind the second B-direction rotary tillage partition (622) along the rotation direction of the rotary tiller blade shaft (100), and the third B-direction rotary tillage partition (623) is provided with the B-direction curved blade at a position relative to the sixteenth circumferential positioning portion.

4. The distribution method according to claim 3, characterized in that: The first B-direction curved blade (301) is arranged at a position of the third rotary tillage area (7) relative to the second circumferential positioning portion; The first A-direction curved blade (201) is arranged at a position of the third rotary tillage zone (7) relative to the thirteenth circumferential positioning portion.

5. The distribution method according to claim 3, characterized in that: The transition zone (8) comprises: A first transition zone (81) is arranged between the second inner rotary tillage zone (522) and the second B-direction rotary tillage zone (622); The second transition zone (82) is arranged between the second A-direction rotary tillage zone (612) and the second outward rotary tillage zone (512).

6. The distribution method according to claim 5, characterized in that: The first A-direction rotary tillage partition (611), the second A-direction rotary tillage partition (612), the first B-direction rotary tillage partition (621), the second B-direction rotary tillage partition (622), the third B-direction rotary tillage partition (623), the first transition zone (81) and the second transition zone (82) all include an axial positioning portion.

7. The distribution method according to claim 5, characterized in that: Along the rotation direction of the rotary tiller blade shaft (100), the third rotary tillage zone (7), the first inward rotary tillage partition (521), the first B-direction rotary tillage partition (621), the second inward rotary tillage partition (522), the first transition zone (81), the second B-direction rotary tillage partition (622), the third inward rotary tillage partition (523), the first A-direction rotary tillage partition (611), the fourth inward rotary tillage partition (524), the first outward rotary tillage partition (511), the second A-direction rotary tillage partition (612), the second transition zone (82), the second outward rotary tillage partition (512), the third B-direction rotary tillage partition (623), the third outward rotary tillage partition (513) and the fifth inward rotary tillage partition (525) are arranged in a circle in sequence.

8. The distribution method according to any one of claims 1 to 7, characterized in that: The number of the axial positioning portions (9) is 36; The axial width of the circumferential positioning portion (4) is (52±2) mm.

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