Rotary cultivator

Abstract

The utility model relates to a rotary cultivator, and belongs to the field of farming, a deep rotary tillage part is combined with a shallow rotary tillage part, the rotation direction of a deep ploughing blade of the deep rotary tillage part is perpendicular to the ground, the rotation direction of a shallow ploughing blade of the shallow rotary tillage part is parallel to the ground, the effective working depth of the deep ploughing blade is more than 20cm, and the effective working depth of the shallow ploughing blade is more than 13cm. Different rotating directions are matched with different working depths, more detailed treatment for a complex soil environment is achieved, rotary tillage is combined with sowing and double pressing is integrated, the problem that multiple processes of rotary tillage, sowing and pressing are needed in the traditional tillage process is solved, soil moisture loss after rotary tillage is reduced, efficiency is improved, and soil moisture conservation is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of farming, and more specifically to a rotary tiller that integrates tilling, harrowing, sowing and pressing. Background Art

[0002] In the prior art, rotary tillers are mainly used to turn the soil up and down, break up soil compaction, and increase soil permeability and air permeability to facilitate later planting.

[0003] Traditional rotary tillers are used for soils with hard geology or many weed roots. After tilling, a large number of hard lumps of soil remain on the surface. In addition, the soil surface is not flat after tilling, which is not conducive to moisture conservation and does not meet the conditions for planting. Power harrows have high requirements for the soil layer and are difficult to be effective in such a complex environment. Under this terrain, neither rotary tillers nor power harrows can meet the requirements of turning the land over in a single time to make the land meet the conditions for planting.

[0004] Therefore, how to provide a new rotary tiller that can be widely used in a variety of soil environments and can also complete the technical effect of arable land sowing in one go is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a rotary tiller, aiming to solve the above technical problems.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: A rotary tiller, characterized in that it includes a power head, a frame, a deep rotary tillage part, a shallow rotary tillage part, a first pressing wheel and a precision drill sowing part;

[0007] A frame, the frame being liftably connected to the rear end of the power head;

[0008] A deep rotary tillage unit, the deep rotary tillage unit comprising a deep tillage shaft and deep tillage blades, the deep tillage shaft being rotatably connected to the frame, being perpendicular to the traveling direction of the frame and being arranged horizontally, the deep tillage blades being spirally distributed on the outer surface of the deep tillage shaft, and the effective working depth of the deep tillage blades being more than 20 cm;

[0009] A shallow rotary tillage part, wherein the shallow rotary tillage parts are multiple and equidistantly arranged behind the deep rotary tillage part, and the arrangement direction thereof is perpendicular to the traveling direction of the frame, and each of the shallow rotary tillage parts comprises a shallow tillage shaft, a shallow tillage disc and a shallow tillage blade, wherein the shallow tillage shaft is rotatably connected to the frame in a vertical horizontal plane; the shallow tillage disc is coaxially fixed to the bottom end of the shallow tillage shaft, and the shallow tillage blade is multiple and circumferentially spaced and arranged along the lower end surface of the circular disc of the shallow tillage disc, and the effective working depth thereof is less than 15 cm;

[0010] A first pressing wheel, the first pressing wheel is located behind the shallow rotary tillage part and is rotatably connected to the frame, and the wheel axis direction is parallel to the deep tillage shaft;

[0011] The precision drill seeding unit includes a seed box and a slotted wheel, a covering wheel and a second pressing wheel which are arranged in sequence behind the first pressing wheel. The seed box is mounted on a vehicle frame and a seed delivery tube is connected to the lower end. There are multiple slotted wheels and covering wheels which are arranged equidistantly and rotatably connected to the vehicle frame, and their arrangement direction is perpendicular to the moving direction of the vehicle frame. The second pressing wheel is rotatably connected to the vehicle frame, and its wheel axis direction is parallel to the deep tillage shaft. A seeding cavity is provided in the slotted wheel, and the other end of the seed delivery tube is connected to the seeding cavity.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows:

[0013] Furthermore, the rotary tiller also includes a rotary tillage power unit, which is located above the frame and is tightly connected to the frame, and the power output end is transmission-connected to the deep tillage shaft and the shallow tillage shaft.

[0014] Furthermore, the rotary tillage power unit includes an engine, a first transmission unit and a second transmission unit, the power output end of the engine is transmission-connected to one end of the first transmission unit and the second transmission unit, the other end of the first transmission unit is connected to the deep tillage shaft, and the other end of the second transmission unit is connected to the shallow tillage shaft.

[0015] Furthermore, the rotary tiller also includes auxiliary support wheels, which are located on both sides of the frame in the direction of travel and are connected to the frame in a liftable manner.

[0016] Furthermore, the auxiliary support wheel is located between the shallow rotary tillage part and the first pressing wheel.

[0017] Furthermore, the slotted wheel and the covering wheel each include two symmetrically distributed conical disks, the conical bottom surfaces of the two conical disks are opposite and form a predetermined angle, the gap between the angles is the sowing cavity, and the gap increases from the direction of travel of the frame to the rear to form a trumpet shape.

[0018] Furthermore, the slotting wheel and the soil covering wheel are arranged in a staggered manner.

[0019] The beneficial effects of adopting the above further scheme are:

[0020] 1. The utility model integrates deep tillage, shallow tillage and sowing, is suitable for a variety of soil environments, has a compact structure, high efficiency, completes tillage and sowing at one time, reduces soil moisture loss, and improves soil moisture utilization efficiency;

[0021] 2. It comes with a rotary tillage power unit, which can be adapted to a variety of power heads, reducing the power requirements of the power head;

[0022] 3. The multi-level pressing method: the first pressing wheel can initially flatten the soil after two rotary tillages to make the soil surface smoother, which is conducive to subsequent sowing. The second pressing wheel compacts the soil after sowing, maintains the moisture content in the tillage layer, and makes the seeds in close contact with the soil. At the same time, it can also slightly adjust the soil depth difference to make the seed depth tend to be consistent, which better ensures the sowing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a rotary tiller of the present invention;

[0024] Figure 2 for Figure 1 A local enlarged view of point A;

[0025] Figure 3 for Figure 1 A top view of point B;

[0026] Figure 4 for Figure 1 A local enlarged view of point B;

[0027] Figure 5 for Figure 3 A three-dimensional schematic diagram of the C position;

[0028] Figure 6 for Figure 5 Left view of

[0029] Figure 7 for Figure 6 DD cross-sectional view;

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Power head, 2. Frame, 3. Deep rotary tillage unit, 4. Shallow rotary tillage unit, 5. First pressing wheel, 6. Precision row sowing unit, 7. Rotary tillage power unit, 8. Auxiliary support wheel, 9. Seed box, 31. Deep tillage shaft, 32. Deep tillage blade, 41. Shallow tillage shaft, 42. Shallow tillage disc, 43. Shallow tillage blade, 61. Slotting wheel, 62. Covering wheel, 62. Second pressing wheel, 71. Engine, 72. First transmission unit, 73. Second transmission unit, 91. Seed transport tube, 610. Conical disc. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] Embodiment 1;

[0034] like Figure 1-7As shown, a rotary tiller according to an embodiment of the present invention comprises: a power head 1, a frame 2, a deep rotary tillage part 3, a shallow rotary tillage part 4, a first pressing wheel 5, and a precision drilling part 6;

[0035] The frame 2 can be raised and lowered and connected to the rear end of the power head 1;

[0036] The deep rotary tillage part 3 includes a deep tillage shaft 31 and a deep tillage blade 32. The deep tillage shaft 31 is rotatably connected to the frame 2, perpendicular to the traveling direction of the frame 2 and arranged horizontally. The deep tillage blade 32 is spirally distributed on the outer surface of the deep tillage shaft 31. The effective working depth of the deep tillage blade 32 is more than 20 cm.

[0037] The shallow rotary tillage parts 4 are multiple and equidistantly arranged behind the deep rotary tillage parts 3, and the arrangement direction is perpendicular to the travel direction of the frame 2, and each of them includes a shallow tillage shaft 41, a shallow tillage disc 42 and a shallow tillage blade 43. The shallow tillage shaft 41 is connected to the frame 2 in a vertical and horizontal plane rotation; the shallow tillage disc 42 is coaxially fixed to the bottom end of the shallow tillage shaft 41, and the shallow tillage blade 43 is multiple and arranged at intervals along the circumferential direction of the lower end surface of the disc surface of the shallow tillage disc 42, and its effective working depth is less than 15 cm;

[0038] Specifically, the deep tillage shaft 31 and the shallow tillage shaft 41 are liftably connected to the frame 2, thereby, the working depths of the deep rotary tillage part 3 and the shallow rotary tillage part 4 can be controlled individually. More specifically, the deep tillage shaft 31 and the shallow tillage shaft 41 are liftably connected to the frame 2 via hydraulic cylinders.

[0039] The first pressing wheel 5 is located behind the shallow rotary tillage part 4 and is rotatably connected to the frame 2, and the wheel axis direction is parallel to the deep tillage shaft 31;

[0040] The precision drill seeding unit 6 includes a seed box 9 and a slotted wheel 61, a covering wheel 62, and a second pressing wheel 63 arranged in sequence behind the first pressing wheel 5. The seed box 9 is mounted on the frame 2 and is connected to a seed delivery tube 91 at the lower end. The slotted wheels 61 and the covering wheels 62 are both multiple and equidistantly arranged and rotatably connected to the frame 2, and their arrangement direction is perpendicular to the travel direction of the frame 2. The second pressing wheel 63 is rotatably connected to the frame 2, and its wheel axis direction is arranged parallel to the deep tillage shaft 31. A seeding cavity is provided in the slotted wheel 61, and the other end of the seed delivery tube 91 is connected to the seeding cavity.

[0041] Specifically, it also includes a control unit, which is located inside the power head and connected to the hydraulic cylinder, the rotary tillage power unit and the seed box.

[0042] More specifically, a plurality of seed delivery tubes 91 are arranged at the bottom of the seed box 9 and connected to the seeding wheel 61. A seed speed regulating unit is provided inside the seed box 9 and connected to the controller, thereby adjusting the corresponding seed falling speed according to different vehicle speeds.

[0043] Therefore, the deep rotary tillage part is combined with the shallow rotary tillage part, which can cope with complex soil environment while ensuring that the land surface is relatively flat after soil tillage, and a good seed bed can be formed. Combined with the multi-level suppression method, the first suppression wheel can initially flatten the soil after two rotary tillages, making the soil surface smoother, which is conducive to subsequent sowing. The second suppression wheel compacts the soil after sowing, maintains the moisture content in the tillage layer of soil, and makes the seeds in close contact with the soil. At the same time, it can also make fine adjustments to the soil depth differences, so that the seed depth tends to be consistent, which better guarantees the sowing quality. The integrated structure of rotary tillage, sowing and suppression has a compact structure and high efficiency. It can complete tillage and sowing at one time, reduce soil moisture loss, and improve soil moisture utilization efficiency.

[0044] In some embodiments, a rotary tillage power unit 7 is also included. The rotary tillage power unit 7 is located above the frame 2 and is firmly connected to the frame 2, and the power output end is transmission-connected to the deep tillage shaft 31 and the shallow tillage shaft 41, thereby being adaptable to a variety of power heads and reducing the power requirements of the power heads.

[0045] Specifically, the rotary tillage power unit 7 includes an engine 71, a first transmission unit 72 and a second transmission unit 73. The power output end of the engine 71 is connected to the first transmission unit and one end of the second transmission unit, the other end of the first transmission unit 72 is connected to the deep tillage shaft 31, and the other end of the second transmission unit 73 is connected to the shallow tillage shaft 41. Specifically, the first transmission unit is a chain or belt drive, and the second transmission unit is a shaft drive, with a commutator arranged in the middle. More specifically, the engine is a diesel or gasoline engine.

[0046] In another specific example, auxiliary support wheels 8 are also included, and the auxiliary support wheels 8 are located on both sides of the frame 2 in the traveling direction and are connected to the frame 2 in a liftable manner. Specifically, the auxiliary support wheels 8 are located between the shallow rotary tillage part 4 and the first pressing wheel 5. More specifically, multiple groups of auxiliary support wheels 8 are located on both sides of the frame 2 along the length direction and are connected to the frame 2 through hydraulic cylinders.

[0047] In some embodiments, the slotted wheel 61 and the covering wheel 62 each include two symmetrically distributed conical disks 610, the conical bottom surfaces of the two conical disks 610 are opposite and form a predetermined angle, the gap between the angles is a sowing cavity, and the gap increases from the direction of travel of the frame 2 to the rear to form a trumpet shape. Specifically, the slotted wheel 61 and the covering wheel 62 are staggered.

[0048] The method of use and working principle of the present invention are:

[0049] The rotary tillage power unit 7 drives the deep rotary tillage unit 3 and the shallow rotary tillage unit 4 to rotate, the frame 2 descends to the specified working depth, and the power head 1 drives the frame 2 forward and the rotary tiller starts working;

[0050] The deep rotary tillage unit 3 is responsible for breaking the soil, breaking up the hard soil on the surface, and destroying the root structure of weeds or straw;

[0051] The shallow rotary tillage part 4 further breaks up the large pieces of soil processed by the deep rotary tillage part 3, making the soil more compact and the surface smoother;

[0052] The first pressing wheel 5 further compacts the soil broken up by the shallow rotary tillage part 4 to prepare for sowing;

[0053] The precision row seeding unit 6 carries out sowing, and the slotting wheel 61 makes grooves on the ground during the forward process. At the same time, the seeds pass from the seed box 9 through the seeding tube 91 and fall into the groove through the sowing cavity of the slotting wheel 61. The two covering wheels 62 located behind the trumpet shape of the slotting wheel 61 fill the soil on both sides of the groove back into the groove. After sowing, the second pressing wheel 63 compacts the soil after sowing to maintain the moisture content in the tillage layer of soil, so that the seeds are in close contact with the soil, thereby ensuring the sowing quality.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary tiller, characterized in that: It comprises a power head (1); A vehicle frame (2), the vehicle frame (2) being liftably connected to the rear end of the power head (1); A deep tillage unit (3), the deep tillage unit (3) comprising a deep tillage shaft (31) and a deep tillage blade (32), the deep tillage shaft (31) being rotatably connected to the frame (2), being perpendicular to the travel direction of the frame (2) and being arranged horizontally, the deep tillage blade (32) being spirally distributed on the outer surface of the deep tillage shaft (31), and the effective working depth of the deep tillage blade (32) being more than 20 centimeters; A shallow rotary tillage unit (4), wherein the shallow rotary tillage units (4) are multiple and equidistantly arranged behind the deep rotary tillage unit (3), and the arrangement direction thereof is perpendicular to the travel direction of the vehicle frame (2), and each of the shallow rotary tillage units (4) comprises a shallow tillage shaft (41), a shallow tillage disc (42) and a shallow tillage blade (43), wherein the shallow tillage shaft (41) is rotatably connected to the vehicle frame (2) in a vertical horizontal plane; the shallow tillage disc (42) is coaxially fixed to the bottom end of the shallow tillage shaft (41), and the shallow tillage blade (43) is multiple and spaced apart along the circumferential direction of the lower end surface of the circular disc surface of the shallow tillage disc (42), and the effective working depth thereof is less than 15 cm; a first pressing wheel (5), the first pressing wheel (5) being located behind the shallow rotary tillage part (4) and rotatably connected to the vehicle frame (2), and the wheel axis direction of the first pressing wheel (5) being arranged parallel to the deep tillage shaft (31); A precision drill seeding unit (6), the precision drill seeding unit (6) comprising a seed box (9) and a slotted wheel (61), a covering wheel (62) and a second suppressing wheel (63) arranged in sequence behind a first suppressing wheel (5); the seed box (9) is mounted on a vehicle frame (2) and is connected to a seed delivery tube (91) at its lower end; the slotted wheels (61) and the covering wheels (62) are both multiple and equidistantly arranged and rotatably connected to the vehicle frame (2), and their arrangement direction is perpendicular to the travel direction of the vehicle frame (2); the second suppressing wheel (63) is rotatably connected to the vehicle frame (2), and its wheel axis direction is arranged parallel to the deep tillage shaft (31); a seeding cavity is provided in the slotted wheel (61), and the other end of the seed delivery tube (91) is connected to the seeding cavity.

2. A rotary tiller according to claim 1, characterized in that: It also comprises a rotary tillage power unit (7), which is located above the vehicle frame (2) and is tightly connected to the vehicle frame (2), and has a power output end which is drivingly connected to the deep tillage shaft (31) and the shallow tillage shaft (41).

3. A rotary tiller according to claim 2, characterized in that: The rotary tillage power unit (7) comprises an engine (71), a first transmission unit (72) and a second transmission unit (73); the power output end of the engine (71) is in transmission connection with one end of the first transmission unit and the second transmission unit; the other end of the first transmission unit (72) is connected to the deep tillage shaft (31); and the other end of the second transmission unit (73) is connected to the shallow tillage shaft (41).

4. A rotary tiller according to claim 1, characterized in that: It also comprises auxiliary support wheels (8), which are located on both sides of the vehicle frame (2) in the direction of travel and are connected to the vehicle frame (2) in a liftable manner.

5. A rotary tiller according to claim 4, characterized in that: The auxiliary support wheel (8) is located between the shallow rotary tillage part (4) and the first pressing wheel (5).

6. A rotary tiller according to claim 1, characterized in that: The slotted wheel (61) and the soil covering wheel (62) both include two symmetrically distributed conical disks (610), the conical bottom surfaces of the two conical disks (610) are opposite to each other and form a predetermined angle, the gap between the angles is the sowing cavity, and the gap increases from the direction of travel of the frame (2) to the rear to form a trumpet shape.

7. A rotary tiller according to claim 6, characterized in that: The slotting wheel (61) and the soil covering wheel (62) are arranged in a staggered manner.

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