Vertical ultra-deep rotary tillage tool

Abstract

The application discloses a vertical super-deep rotary tillage cutter and belongs to the technical field of agricultural rotary tillage machines. The vertical super-deep rotary tillage cutter comprises a cutter head, a plurality of cutter arms and a plurality of cutter teeth; the cutter head is horizontally arranged; the plurality of cutter arms are vertically arranged and fixedly connected to the cutter head at end portions, and the plurality of cutter arms are uniformly distributed around the rotation center line of the cutter head; each cutter arm is a spiral structure, the rotation radius of each cutter arm around the axis of the cutter head gradually decreases from top to bottom, the plurality of cutter teeth are uniformly and fixedly arranged on the outer side surfaces of the cutter arms, and the plurality of cutter teeth on each cutter arm are arranged at intervals along the spiral track of the outer side surface of the corresponding cutter arm. The vertical rotary tillage cutter has the characteristics of small rotary tillage resistance, small power consumption and high surface soil crushing degree, and the working depth can reach 30-50 cm.

Description

Technical Field

[0001] This invention relates to the field of agricultural rotary tillage machinery technology, specifically to a vertical ultra-deep rotary tillage blade. Background Technology

[0002] Arable land is the foundation of agricultural production, and its operation directly or indirectly affects subsequent agricultural production processes and crop growth and development. Long-term no-tillage and shallow tillage will result in the formation of a hard plow pan between the topsoil and subsoil. An excessively thick plow pan will hinder crop root growth, impede the absorption of water and nutrients, and be detrimental to crop growth. Deep tillage effectively breaks up the plow pan, improves soil structure, and is of great significance for increasing crop yield. In the application of deep tillage, deep tillage can effectively break up the plow pan and improve the properties of deeper soil layers, but its soil-breaking ability is relatively poor, and it easily produces large clods after the operation. Deep tillage improves soil permeability, but it causes significant soil disturbance, leading to soil layer disorder. Furthermore, deep tillage is energy-intensive, costly, and relatively time-consuming and labor-intensive.

[0003] To address this, my country has proposed a new tillage method—the pulverizing tillage technique (also known as "deep rotary tillage"). This technique uses high-speed rotating spiral blades to cut and break up the entire topsoil layer without disturbing the soil layers. It operates at a greater depth, resulting in better soil breaking up. Under natural conditions without additional fertilizer or water, crop yields can increase by 10-50%, and a single operation can generate multiple yield increases. Pulverizing tillage relies on pulverizing machines; however, the pulverizing blades, as a key component of the pulverizing machine, significantly affect the quality and efficiency of the operation. For example, invention patent CN201510935334.2, "A Loosening Tillage Blade," currently uses this as the main pulverizing blade on pulverizing machines. This blade consists of a cutter shaft, spiral blades, and cutting blades, resulting in high resistance and power consumption during field operation, and low surface soil breaking up. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems in the prior art and provide a vertical ultra-deep rotary tillage tool. This vertical ultra-deep rotary tillage tool has a simple structure, low rotary tillage resistance and low power consumption during operation, and high degree of surface soil fragmentation.

[0005] This invention provides a vertical ultra-deep rotary tillage tool, comprising: a cutter head, multiple cutter arms, and multiple cutter teeth. The cutter head is horizontally positioned; the multiple cutter arms are all vertically positioned and their ends are fixedly connected to the cutter head. The multiple cutter arms are evenly distributed around the rotation center line of the cutter head; each cutter arm has a helical structure, and the rotation radius of each cutter arm around the axis of the cutter head gradually decreases from top to bottom. The spatial curve equations of the inner and outer contours of each cutter arm satisfy the following:

[0006] Equation of inner contour space curve:

[0007]

[0008] The outer profile space curve equation is:

[0009]

[0010] Wherein x represents the x-axis direction, wherein y represents the y-axis direction, wherein z represents the z-axis direction, wherein the value range of θ determines the extension direction of the arm profile, and the value range of θ is 0°-85°. The above equation set makes the end of each arm close to the cutter head wider than the end away from the cutter head. A plurality of teeth are uniformly fixed on the outer side surface of each arm, and the plurality of teeth on each arm are arranged at intervals along the spiral track of the corresponding outer side surface of the arm.

[0011] Preferably, the number of arms is three, and one end of each arm is fixedly connected to one end of a beam cutter. The other end of the three beam cutters is fixedly connected to each other.

[0012] Preferably, the end of the arm away from the cutter head is provided with a first cutting edge for cutting soil, and the outer edge of the arm is provided with a second cutting edge for cutting soil.

[0013] Preferably, the number of teeth fixed on each arm is 5-10, and the teeth on adjacent arms are staggered.

[0014] Preferably, the number of cutter heads is two, and a plurality of arms and a plurality of teeth are fixedly provided on each cutter head. One cutter head and the plurality of arms and the plurality of teeth fixedly connected thereto constitute a rotary tillage unit. The two rotary tillage units are arranged side by side, the arms on the two rotary tillage units are installed with a 60° offset, and the rotation directions of the two rotary tillage units are opposite.

[0015] Preferably, the plurality of arms are uniformly distributed around the rotation axis of the cutter head, the plurality of arms are inclined towards the rotation direction of the cutter head corresponding to each arm, and the position where the outer side surface of each arm intersects with the surface of the cutter head constitutes a first line segment. One end of the first line segment close to the edge of the cutter head is marked as point B. A radius of the surface of the cutter head passing through point B is a second line segment. The included angle C formed by the second line segment, point B and the first line segment is 30°-60°.

[0016] Preferably, the beam cutter is horizontally arranged, and the side edge of the beam cutter is provided with a cutting edge.

[0017] Preferably, the cutter head is connected to one side of the flange plate through bolts, and a coupling is fixedly arranged at the center of the other side of the flange plate.

[0018] Preferably, the soil-facing surface of the tooth is a plane, the soil-back surface of the tooth is an inclined surface, and the tooth tip is thinner than the tooth root.

[0019] Compared with the prior art, the vertical ultra-deep rotary tillage tool has the advantages that the cutter head of the vertical ultra-deep rotary tillage tool is fixedly connected to the power output end of the ridge former, the vertical ultra-deep rotary tillage tool enters the soil during the movement of the ridge former, and reaches the soil depth, the cutter head is driven by the ridge former to rotate in the horizontal direction, the cutter head drives the plurality of cutter arms and the plurality of cutter teeth on the cutter arms to rotate, the upper end of the cutter arm has a large rotary radius (the cutter teeth at the position have a large cutting radius) and the lower end of the cutter arm has a small rotary radius (the cutter teeth at the position have a small cutting radius) during the rotation of the cutter arm around the cutter head, and therefore the plurality of cutter teeth on the cutter arm enter the soil and cut the soil in a spiral movement from top to bottom along the movement direction of the ridge former, that is, the cutter teeth at the upper part of the cutter arm with a large rotary radius cut the soil first, and the plurality of cutter teeth cut the soil in the order of "first in first out", so that the force on the cutter teeth for cutting the soil does not reach the maximum value at the same time, and the soil cutting resistance of the vertical ultra-deep rotary tillage tool is effectively reduced.

[0020] Compared with the existing loose tillage tool, the surface soil crushing rate of the loose tillage tool is 69.5%, and the soil cutting resistance is 5383N; the surface soil crushing rate of the vertical ultra-deep rotary tillage tool is 80%, and the soil cutting resistance is 4371.8N. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the present application;

[0022] Figure 2 is a bottom view of Figure 1

[0023] Figure 3 is an angle staggered schematic view of two rotary tillage units;

[0024] Figure 4 is a cooperative rotary tillage schematic view of two rotary tillage units;

[0025] Figure 5 is a schematic view of the present application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1. flange plate, 2. cutter head, 3. cutter arm, 4. cross beam cutter, 5. cutter tooth, 10. first line segment, 11 second line segment, 31. first blade, 32. second blade. DETAILED DESCRIPTION

[0028] ​The specific embodiments of the present application are described in detail below, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments. Based on the examples in the present application, all other examples obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0029] The vertical ultra-deep rotary tiller provided by the present application comprises a cutter head 2, a plurality of cutter arms 3 and a plurality of cutter teeth 5. Figures 1-5 The vertical ultra-deep rotary tiller provided by the present application comprises a cutter head 2, a plurality of cutter arms 3 and a plurality of cutter teeth 5.

[0030] The inner profile space curve equation is:

[0031]

[0032] The outer profile space curve equation is:

[0033]

[0034] In the formula, x represents the x-axis direction, in the formula, y represents the y-axis direction, in the formula, z represents the z-axis direction, the value range of θ determines the extension direction of the cutter arm 3 profile line, the value range of θ is 0°-85°, and the above equation set makes the end of each cutter arm 3 close to the cutter head 2 wider than the end away from the cutter head 2; the plurality of cutter teeth 5 are uniformly and fixedly distributed on the outer side surface of each cutter arm 3, and the plurality of cutter teeth 5 on each cutter arm 3 are arranged at intervals along the spiral track of the corresponding outer side surface of the cutter arm 3.

[0035] The cutter head 2 is fixedly connected with the power output end of the ridge lopper. During the movement of the ridge lopper, the vertical ultra-deep rotary tillage cutter enters the soil and reaches the soil entering depth (the operation depth can reach 30-50 cm). The ridge lopper drives the cutter head 2 to rotate in the horizontal direction, and the cutter head 2 drives the plurality of cutter arms 3 and the plurality of cutter teeth 5 on the cutter arms 3 to rotate. Since the upper end of the cutter arm 3 has a large rotary radius (the cutting radius of the cutter tooth 5 at this position is large) and the lower end of the cutter arm 3 has a small rotary radius (the cutting radius of the cutter tooth 5 at this position is small) during the rotation of the cutter arm 3 around the cutter head 2, the plurality of cutter teeth 5 on the cutter arm 3 enter the soil and cut the soil in a spiral moving manner from top to bottom along the moving direction of the ridge lopper, that is, the cutter tooth 5 with a large rotary radius at the upper part of the cutter arm 3 enters the soil and cuts the soil first. During the soil cutting process, the plurality of cutter teeth 5 cut the soil in accordance with the principle of “first in, first out”, which can ensure that the force on the cutter tooth 5 during the soil cutting process does not reach the maximum value at the same time, thereby effectively reducing the soil cutting resistance of the vertical ultra-deep rotary tillage cutter. The vertical ultra-deep rotary tillage cutter has the characteristics of small rotary tillage resistance, small power consumption and high surface soil crushing degree during operation.

[0036] Preferably, as Figure 1 and Figure 4 The number of the cutter arms 3 is three, and one end of each cutter arm 3 is fixedly connected with one end of one transverse beam cutter 4.

[0037] The transverse beam cutter 4 is used for reducing the deformation amount of the plurality of cutter arms 3 during the rotation, improving the overall operation strength of the cutter, and making the plurality of cutter arms 3 more stable during the rotary cutting.

[0038] Preferably, as Figure 1 The end of the cutter arm 3 away from the cutter head 2 is provided with a first cutting edge 31 for drilling and cutting the soil, and the outer edge of the cutter arm 3 is provided with a second cutting edge 32 for cutting the soil.

[0039] The second cutting edge 32 is used for assisting the secondary cutting of the soil cut by the cutter tooth 5, so that the soil is more fully crushed.

[0040] Preferably, the number of the cutter teeth 5 fixed on each cutter arm 3 is 5-10, and the cutter teeth 5 on adjacent cutter arms 3 are staggered.

[0041] The optimal number of the cutter teeth 5 on each cutter arm 3 is 7, at which the cutting resistance is the smallest. Considering the operation resistance and power consumption of the cutter, the number of the cutter arms 3 and the cutter teeth 5 is also very important. Therefore, a large number of different combination tests of the number of the cutter arms and the cutter teeth are conducted. It is found that the number of the cutter arms and the cutter teeth should not be too much or too little. Too much number of the cutter arms will cause serious soil accumulation between the cutter arms, further increasing the operation resistance and power consumption. Too little number of the cutter arms will cause low soil crushing degree. Too much number of the cutter teeth will increase the operation power consumption, and too little number of the cutter teeth will cause poor soil crushing effect.

[0042] Preferably, as Figures 3-4 The number of the cutter heads 2 is two, and each of the two cutter heads is fixedly provided with a plurality of cutter arms 3 and a plurality of cutter teeth 5; one cutter head 2 and the plurality of cutter arms 3 and the plurality of cutter teeth 5 fixedly connected with the cutter head 2 jointly constitute one rotary tillage unit; the two rotary tillage units are arranged side by side; the cutter arms 3 on the two rotary tillage units are installed in a staggered manner by 60°; and the rotary directions of the two rotary tillage units are opposite.

[0043] The two rotary tillage units are mirror-symmetric to each other; in actual use, the rotary speeds of the two rotary tillage units are equal, and the rotary directions of the two rotary tillage units are opposite, so that the rotary tillage efficiency can be improved; and the cutter arms 3 on the two rotary tillage units are installed in a staggered manner, so that tooth collision can be avoided.

[0044] Preferably, as Figure 2 The plurality of cutter arms 3 are uniformly distributed around the rotary axis of the cutter head 2; the plurality of cutter arms 3 are inclined toward the rotary direction of the cutter head 2 corresponding to each of the plurality of cutter arms 3; and the position, at which the outer side arc surface of each cutter arm 3 intersects with the surface of the cutter head 2, constitutes a first line segment 10; one end of the first line segment 10 close to the edge of the cutter head 2 is marked as a B point; a radius of the surface of the cutter head 2 passing through the B point is a second line segment 11; and the included angle C formed by the second line segment 11, the B point and the first line segment 10 is 30°-60°.

[0045] The optimal angle of the included angle C is 45°, and the purpose is to reduce the cutting resistance in work.

[0046] Preferably, as Figure 1 The cross beam cutter 4 is horizontally arranged, and the side edge of the cross beam cutter 4 is provided with a cutting edge.

[0047] The cross beam cutter 4 is used for assisting secondary cutting of the soil cut by the cutter teeth 5, so that the soil is finely broken and more fully.

[0048] Preferably, as Figure 1 The cutter head 2 is connected to one side of the flange plate 1 through bolts, and a coupling is fixedly arranged at the center of the other side of the flange plate 1.

[0049] The coupling is used for connecting the power output shaft of the ridger.

[0050] Preferably, as Figure 1 The soil-facing surface of the cutter tooth 5 is a plane, the soil-back surface of the cutter tooth 5 is an inclined surface, and the tooth tip of the cutter tooth 5 is thinner than the tooth root.

[0051] The purpose is to reduce the cutting resistance of the cutter tooth 5.

[0052] The use method of the vertical ultra-deep rotary tillage cutter is as follows:

[0053] The cutter head 2 is fixedly connected with the power output end of the ridge lopper, in the process of walking of the ridge lopper, the vertical type super deep rotary tillage cutter enters the soil and reaches the soil entering depth, the ridge lopper drives the cutter head 2 to rotate in the horizontal direction, the cutter head 2 drives the plurality of cutter arms 3 and the plurality of cutter teeth 5 on the cutter arms 3 to rotate, since the upper end rotating radius of the cutter arm 3 is large (the cutting radius of the cutter tooth 5 at the position is large) and the lower end rotating radius is small (the cutting radius of the cutter tooth 5 at the position is small) in the process of rotating around the cutter head 2, the plurality of cutter teeth 5 on the cutter arm 3 enter the soil and cut in the moving direction of the ridge lopper in a spiral moving mode from top to bottom in turn, that is, the cutter tooth 5 with a large rotating radius at the upper part of the cutter arm 3 enters the soil and cuts first, the plurality of cutter teeth 5 cut the soil in the process of cutting the soil, which follows the principle of 'first in first out', so that the force of the cutter tooth 5 cutting the soil does not reach the maximum value at the same time, and the cutting resistance of the vertical type super deep rotary tillage cutter is effectively reduced.

[0054] Meanwhile, the first cutting edge 31 and the second cutting edge 32 on the cutter arm 3 and the side of the cross beam cutter 4 are provided with cutting edges, which assist in secondary cutting of the soil cut by the cutter tooth 5, so that the soil is finely broken.

[0055] The vertical type super deep rotary tillage cutter has the characteristics of small rotary tillage resistance and power consumption during operation, and high surface soil breaking degree. Tests show that the vertical type super deep rotary tillage cutter has the advantages of simple structure, light weight, stable operation, small operation resistance and power consumption, and high surface soil breaking degree. Compared with the existing loose tillage cutter, the surface soil breaking rate of the loose tillage cutter is 69.5%, and the cutting resistance is 5383N; the surface soil breaking rate of the vertical type super deep rotary tillage cutter is 80%, and the cutting resistance is 4371.8N;

[0056] The surface soil breaking rate of the vertical type super deep rotary tillage cutter is increased by 10.5%, the resistance is reduced by 18.6%, the resistance is reduced by 18.6%, the surface soil breaking rate is increased by 10.5%, the surface soil breaking rate reaches 80%, the operation resistance and power consumption are effectively reduced, and the quality and efficiency of the plowing operation are high.

[0057] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vertical ultra-deep rotary tillage blade, characterized in that, include: Cutter head (2), horizontally set; Multiple cutter arms (3) are vertically arranged and their ends are fixedly connected to the cutter disc (2). The multiple cutter arms (3) are evenly distributed around the rotation center line of the cutter disc (2). Each cutter arm (3) is a spiral structure, and the rotation radius of each cutter arm (3) around the axis of the cutter disc (2) gradually decreases from top to bottom. The spatial curve equations of the inner and outer contours of each cutter arm (3) satisfy: Equation of inner contour space curve: Equation of outer contour space curve: In the formula, x represents the x-axis direction, y represents the y-axis direction, z represents the z-axis direction, and the range of θ determines the extension direction of the contour line of the cutter arm (3). The range of θ is 0° to 85°. The above set of equations makes the ends of each cutter arm (3) closer to the cutter head (2) wider than the ends farther from the cutter head (2). Multiple cutting teeth (5) are evenly and fixedly distributed on the outer surface of each cutting arm (3), and the multiple cutting teeth (5) on each cutting arm (3) are spaced apart along the spiral trajectory of the corresponding cutting arm (3) outer surface.

2. The vertical ultra-deep rotary tillage blade as described in claim 1, characterized in that, The number of the blade arms (3) is three. Each blade arm (3) has one end of a crossbeam blade (4) fixedly connected to the inner side of its middle section. The other ends of the three crossbeam blades (4) are fixedly connected to each other.

3. The vertical ultra-deep rotary tillage blade as described in claim 1, characterized in that, The end of the cutter arm (3) away from the cutter disc (2) is provided with a first cutting edge (31) for drilling and cutting, and the outer edge of the cutter arm (3) is provided with a second cutting edge (32) for cutting soil.

4. The vertical ultra-deep rotary tillage blade as described in claim 1, characterized in that, The number of fixed cutting teeth (5) on each cutting arm (3) is 5 to 10, and the cutting teeth (5) on adjacent cutting arms (3) are arranged alternately.

5. The vertical ultra-deep rotary tillage blade as described in claim 1, characterized in that, There are two cutter discs (2). Each cutter disc is fixedly provided with multiple cutter arms (3) and multiple cutter teeth (5). One cutter disc (2) and multiple cutter arms (3) and multiple cutter teeth (5) fixedly connected to this cutter disc (2) together constitute a rotary tillage unit. The two rotary tillage units are arranged side by side. The cutter arms (3) on the two rotary tillage units are installed at a 60° offset from each other. The rotation directions of the two rotary tillage units are opposite.

6. The vertical ultra-deep rotary tillage blade as described in claim 1, characterized in that, The plurality of cutter arms (3) are evenly distributed around the rotation axis of the cutter disc (2). The plurality of cutter arms (3) are inclined in the rotation direction of their respective cutter discs (2), and the position where the outer arc surface of each cutter arm (3) intersects with the surface of the cutter disc (2) forms a first line segment (10). The end of the first line segment (10) near the edge of the cutter disc (2) is marked as point B. A radius of the cutter disc (2) surface passing through point B is a second line segment (11). The included angle C formed by the second line segment (11), point B and the first line segment (10) is 30° to 60°.

7. The vertical ultra-deep rotary tillage blade as described in claim 2, characterized in that, The crossbeam knife (4) is set horizontally, and the side of the crossbeam knife (4) is provided with a cutting edge.

8. The vertical ultra-deep rotary tillage blade as described in claim 1, characterized in that, The cutter head (2) is bolted to one side of the flange (1), and a coupling is fixedly provided at the center of the other side of the flange (1).

9. The vertical ultra-deep rotary tillage blade as described in claim 1, characterized in that, The soil-facing surface of the blade (5) is a plane, the soil-repelling surface of the blade (5) is an inclined plane, and the tip of the blade (5) is thinner than the root.

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