A composite soil turning and heavy harrowing and heavy harrowing synchronous lifting control system

Abstract

The invention discloses a composite soil turning heavy harrow and a heavy harrow synchronous lifting control system, belonging to the technical field of agricultural machinery. The composite soil turning heavy harrow comprises a connecting frame, under which a deep rotary tillage assembly, a soil turning screen assembly and a shallow rotary tillage assembly are fixed in sequence; the soil turning screen assembly comprises: the upper end of the plow is fixedly connected to the connecting frame, the front end of the soil screening rod is fixedly connected to the rear side of the plow, the front part of the soil screening rod has an upper convex part, the rear part has a lower convex part, and the rear end of the soil screening rod has a harrowing part extending upward; the soil turning screen assembly is located above the lower convex part, and the soil turning screen assembly and the harrowing part are connected to the connecting frame through a floating assembly. The present invention uses a deep rotary tillage assembly to turn out the soil at a deeper depth, and the soil turning screen assembly effectively guides and preliminarily screens larger soil blocks and debris through the cooperation of the plow and the soil screening rod, and the shallow rotary tillage assembly further crushes larger soil blocks and debris with a small torque and high speed operation, and the harrowing part smoothes the soil, and multiple steps such as deep tillage, crushing and harrowing can be completed in one operation, thereby improving the operation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a composite soil turning heavy harrow and a heavy harrow synchronous lifting control system. Background Art

[0002] In the process of modern agricultural mechanization, soil tillage is a key link to ensure the healthy growth of crops and increase yields. Traditional soil tillage equipment, such as a single rotary tiller or plow, can complete basic soil turning tasks, but has obvious deficiencies in dealing with complex soil structures and improving soil fragmentation. These devices often cannot simultaneously meet the multi-level requirements of deep plowing, soil screening, fine crushing and ground leveling, resulting in low operating efficiency and difficulty in adapting to diverse soil and crop planting conditions. In particular, the crushing effect of crop roots and weeds is not ideal. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the present invention provides a composite soil turning and heavy harrowing and a heavy harrow synchronous lifting and lowering control system, which can complete deep plowing, crushing and raking operations in one operation by sequentially cooperating a deep rotary tillage assembly, a soil turning screen assembly and a shallow rotary tillage assembly, thereby improving work efficiency.

[0004] The present invention adopts the following technical scheme: a composite soil turning heavy harrow, comprising a connecting frame;

[0005] Also includes:

[0006] A deep rotary tillage assembly is fixed to the front end of the connecting frame;

[0007] A soil turning screen assembly is fixed in the middle of the connecting frame;

[0008] A shallow rotary tillage assembly is fixed to the rear end of the connecting frame;

[0009] Wherein, the soil turning screen assembly comprises:

[0010] A plurality of plowshares, wherein the upper ends of the plowshares are fixedly connected to the connecting frame;

[0011] A plurality of soil screening rods, wherein the front end of the soil screening rods is fixedly connected to the rear side of the plow blade, the front part of the soil screening rods has an arc-shaped upper convex part protruding upward, the rear part of the soil screening rods has an arc-shaped lower convex part protruding downward, and the rear end of the soil screening rods has a soil raking part extending upward;

[0012] The shallow rotary tillage component is located above the lower convex part, and the shallow rotary tillage component and the soil harrowing part are connected to the connecting frame through a floating component.

[0013] The further feature is that: a plow bar is fixed to the upper end of the plow blade, and external positioning grooves are respectively provided on the front and rear sides of the upper part of the plow bar;

[0014] A pair of middle longitudinal beams clamped at the front and rear sides of the plow bar are fixed on the connecting frame, and an inner positioning groove matched with the outer positioning groove is provided on one side of the middle longitudinal beam close to the plow bar.

[0015] A triangular soil dividing block is fixed on the rear side of each of the plowshares, and each of the soil dividing blocks is fixedly connected to a plurality of soil screening bars, and the spacing between adjacent soil screening bars is equal.

[0016] A soil plowing strip is fixed on the front side of the lower convex part of the soil screening bar.

[0017] The floating assembly comprises:

[0018] A pair of L-shaped swivel arms, the front ends of the two swivel arms are symmetrically hinged to the two sides of the connecting frame through a rotating shaft;

[0019] A limiting beam is fixedly connected to the rear ends of the two slewing arms; both ends of the limiting beam abut against the upper side of the connecting frame;

[0020] Two spring assemblies are connected between the rear end of the swivel arm and the connecting frame respectively;

[0021] The spring assembly includes:

[0022] A spring seat, fixed on one side of the swivel arm;

[0023] A spring column is fixed on the spring seat; the upper end of the spring column is opposite to the connecting frame and a distance is left between the spring column and the connecting frame;

[0024] The spring is sleeved on the spring column; the lower end of the spring abuts against the spring seat, and the upper end of the spring abuts against the connecting frame.

[0025] The two ends of the shallow rotary tillage assembly are fixed to the middle of the rotary arms on both sides through supports;

[0026] The soil raking part in the soil screening rod is fixedly connected with a longitudinal connecting rod, and connecting rib plates are fixedly connected at both ends of the longitudinal connecting rod, and the connecting rib plates are fixedly connected with the rear end of the rotating arm on the corresponding side.

[0027] The blade diameter of the deep rotary tillage component is larger than the blade diameter of the shallow rotary tillage component, and the rotation speed of the deep rotary tillage component is smaller than the rotation speed of the shallow rotary tillage component.

[0028] A heavy harrow synchronous lifting control system, comprising:

[0029] A lifting frame, wherein the front end of the lifting frame is fixedly connected to a traction frame; the composite soil turning heavy harrow is connected to the lower side of the lifting frame through a connecting frame;

[0030] A plurality of luffing brackets and a running wheel group, wherein the luffing bracket is connected below the lifting frame, and the running wheel group is installed on the luffing bracket.

[0031] Furthermore, the luffing bracket comprises:

[0032] A rotary shaft, both ends of which are rotatably connected to the lifting frame;

[0033] A luffing cylinder is used to drive the rotary shaft to rotate; one end of the luffing cylinder is hinged to the lifting frame, and the other end of the luffing cylinder is hinged to the ear plate on the side wall of the rotary shaft;

[0034] A supporting leg, one end of which is fixed to the rotary shaft, and the other end of which is provided with the walking wheel set.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The deep rotary tillage component operates at high torque and low speed, which can turn over the soil from deeper places, providing a basis for subsequent soil treatment; the soil turning and screening component can effectively guide and initially screen larger soil clods and debris through the cooperation of the coulter and the soil screening bar, thereby improving soil treatment efficiency; the shallow rotary tillage component operates at low torque and high speed, further crushing larger soil clods and debris, and improving soil fineness; the harrowing part smoothes the soil and improves the flatness of the ground, providing good soil conditions for subsequent planting or sowing; the compound soil turning and heavy harrowing can complete multiple steps such as deep tillage, crushing and harrowing in one operation, thereby improving work efficiency;

[0037] The front end of the soil turning screen assembly is connected to the connecting frame through the positioning groove of the plow bar, which simplifies the installation process and improves the stability and accuracy of the connection. The rear end is connected to the connecting frame through a floating assembly, allowing the soil turning screen assembly and the shallow rotary tillage assembly to float within a certain angle, thereby enhancing the adaptability and stability of the soil turning unit.

[0038] Multiple compound tillage harrows are integrated under the lifting frame to form a complete compound tillage plow and harrow system. The swing shaft is driven by the variable-length oil cylinder to adjust the angle of the outriggers, thereby achieving height adjustment of the traction frame and the compound tillage harrow. This enables the system to adapt to operations at different heights and can be precisely adjusted according to different soil conditions and crop requirements, thereby improving operating efficiency and soil treatment quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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 of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 The present invention is a three-dimensional diagram of a composite soil turning and heavy harrow.

[0041] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0042] Figure 3 The present invention is a front view of a composite soil turning and heavy harrow.

[0043] Figure 4 The utility model is a top view of a composite soil turning and heavy harrow of the present invention.

[0044] Figure 5 It is a schematic diagram of the assembly of the soil turning screen assembly in the present invention.

[0045] Figure 6 The present invention is a top view of a heavy harrow synchronous lifting control system.

[0046] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0047] Description of reference numerals:

[0048] 1. Connecting frame; 11. Middle longitudinal beam; 111. Inner positioning groove;

[0049] 2. Deep rotary tillage assembly;

[0050] 3. Soil turning screen assembly; 31. Plow blade; 311. Soil block separation;

[0051] 32, soil screening rod; 321, upper convex part; 322, lower convex part; 323, soil raking part; 324, soil plowing bar;

[0052] 33. Plough bar; 331. External positioning groove;

[0053] 34. Longitudinal connecting rod;

[0054] 35. Connect the ribs;

[0055] 4. Shallow rotary tillage assembly;

[0056] 5. floating assembly; 51. slewing arm; 511. rotating shaft;

[0057] 52. Limit beam;

[0058] 53. Spring assembly; 531. Spring seat; 532. Spring column; 533. Spring;

[0059] 6. Lifting frame; 61. Traction frame;

[0060] 7. luffing bracket; 71. slewing shaft; 72. luffing cylinder; 73. outrigger;

[0061] 8. Traveling wheel set. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] Embodiment 1:

[0064] Combination Figure 1 As shown, the present invention provides a composite soil turning heavy harrow. The connecting frame 1 is a square frame structure, and a pair of middle longitudinal beams 11 are arranged in the middle of the connecting frame 1, and the two ends of the middle longitudinal beams 11 are fixedly connected to the connecting frame 1 by bolts. A deep rotary tillage assembly 2, a soil turning screen assembly 3 and a shallow rotary tillage assembly 4 are arranged in sequence from front to back under the connecting frame 1. Among them, the deep rotary tillage assembly 2 is fixedly connected to the connecting frame 1, and the rear end of the soil turning screen assembly 3 and the shallow rotary tillage assembly 4 are connected to the connecting frame 1 through a floating assembly 5.

[0065] Combination Figure 1 , Figures 3 to 5 As shown, the soil turning screen assembly 3 includes a plurality of longitudinally arranged plow blades 31, which are located at the rear side of the deep rotary tillage assembly 2, and the depth of the plow blades 31 is higher than the lowest position of the blades of the deep rotary tillage assembly 2. A plow bar 33 is welded and fixed to the upper end of the plow blade 31, and outer positioning grooves 331 are respectively provided on the front and rear sides of the upper part of the plow bar 33. An inner positioning groove 111 that fits in with the outer positioning groove 331 is provided on one side of the two middle longitudinal beams 11 close to the plow bar 33. During installation, one of the middle longitudinal beams 11 is first fixed, and then the plow bar 33 is fitted into the inner positioning groove 111 of the middle longitudinal beam 11, and finally the other middle longitudinal beam 11 is installed so that the two middle longitudinal beams 11 clamp and fix the plow bar 33.

[0066] A triangular soil dividing block 311 is fixed to the rear side of each plowshare 31. Three soil screening rods 32 are arranged in coordination with one plowshare 31. That is, the front ends of the three soil screening rods 32 are longitudinally arranged and welded to the soil dividing block 311. The longitudinal spacing between all the soil screening rods 32 is equal.

[0067] The soil screening rod 32 is in an "S" shape, with an upper convex portion 321 protruding upward in the front of the soil screening rod 32, and a lower convex portion 322 protruding downward in the rear of the soil screening rod 32; wherein the upper convex portion 321 has a larger curvature than the lower convex portion 322, that is, the upper convex portion 321 is smoother. A section of plowing strip 324 is welded to the front side of the lower convex portion 322, and the cross-section of the plowing strip 324 is triangular, so that the lower convex portion 322 can plow the soil smoothly. The rear end of the soil screening rod 32 extends upward and rearward along the lower convex portion 322 to form a raking portion 323. The ends of each raking portion 323 are fixed together by a longitudinal connecting rod 34, and connecting ribs 35 are welded to both ends of the longitudinal connecting rod 34.

[0068] Combination Figures 1 to 5 As shown, the floating assembly 5 includes two swivel arms 51 symmetrically arranged on both sides of the connecting frame 1. The front end of the swivel arm 51 is hinged to the connecting frame 1 through a rotating shaft 511, and the rear end of the swivel arm 51 extends downward to form an "L" shape. The limiting beam 52 is fixedly connected to the upper side of the rear end of the two swivel arms 51, and the two ends of the limiting beam 52 are against the upper side of the connecting frame 1, so that the downward rotation angle of the rear end of the swivel arm 51 is limited by the limiting beam 52. The spring assembly 53 is connected between the rear end of the swivel arm 51 and the connecting frame 1, and is used to push the rear end of the swivel arm 51 to rotate downward.

[0069] The spring assembly 53 includes a spring seat 531 fixed on one side of the swivel arm 51. A pair of spring columns 532 are fixed on the spring seat 531. The upper ends of the spring columns 532 are opposite to the connecting frame 1 and there is a gap between the spring columns 532 and the connecting frame 1. The spring columns 532 can limit the upward rotation angle of the rear end of the swivel arm 51. The spring 533 is sleeved on the spring column 532. The lower end of the spring 533 abuts against the spring seat 531, and the upper end of the spring 533 abuts against the connecting frame 1. Under normal conditions, the spring 533 pushes the rear end of the swivel arm 51 to rotate downward to the lowest position, so that the limiting beam 52 on the swivel arm 51 abuts against the upper side of the connecting frame 1, thereby keeping the swivel arm 51 in a stable position; when the rear end of the swivel arm 51 is subjected to an upward thrust, the spring 533 is further compressed, and at this time, the rear end of the swivel arm 51 can rotate upward by a certain angle until the upper end of the spring column 532 abuts against the connecting frame 1, and the rear end of the swivel arm 51 reaches the highest position.

[0070] The two connecting ribs 35 at the rear end of the soil turning screen assembly 3 are fixedly connected to the rear end of the corresponding side rotating arm 51 by bolts, and the two ends of the shallow rotary tillage assembly 4 are fixed to the middle of the rotating arms 51 on both sides by supports. Under the action of the floating assembly 5, the rear end of the soil turning screen assembly 3 and the shallow rotary tillage assembly 4 can float at a certain angle.

[0071] Combination Figure 3As shown, the blade and drive gear diameters of the deep rotary tillage assembly 2 are larger than those of the shallow rotary tillage assembly 4. When working, the deep rotary tillage assembly 2 runs at a high torque and low speed compared to the shallow rotary tillage assembly 4, while the shallow rotary tillage assembly 4 runs at a low torque and high speed.

[0072] Working principle:

[0073] The composite soil turning heavy harrow moves under the driving of the agricultural machinery, and the lower parts of the deep rotary tillage component 2, the soil turning screen component 3 and the shallow rotary tillage component 4 are located in the soil;

[0074] The deep rotary tillage component 2 rotates at a low speed with a large torque to turn over the deeper soil; the plow blade 31 in the soil turning screen component 3 penetrates deep into the soil, and the soil screening rod 32 guides and preliminarily screens the larger soil clods and debris (crop roots and weeds). Finally, the larger soil clods and debris pass over the upper convex part 321 and reach above the lower convex part 322; the shallow rotary tillage component 4 is located above the lower convex part 322, and the shallow rotary tillage component 4 rotates at a high speed with a small torque to further crush the larger soil clods and debris; the rearmost harrowing part 323 smoothes the soil to improve the flatness of the ground.

[0075] Embodiment 2:

[0076] Based on the above embodiment 1, Figure 6 and Figure 7 As shown, the present invention provides a heavy harrow synchronous lifting control system. A traction frame 61 is fixedly connected to the front end of the lifting frame 6, and the traction frame 61 is connected to the agricultural machinery. A plurality of walking wheel groups 8 are installed under the lifting frame 6 through a variable amplitude bracket 7 to realize the walking support of the lifting frame 6. A plurality of compound soil turning heavy harrows are distributed and fixed on the lower side of the lifting frame 6.

[0077] Combination Figure 7 As shown, the luffing bracket 7 includes a rotating shaft 71, and both ends of the rotating shaft 71 are rotatably connected to the lifting frame 6. One end of the luffing cylinder 72 is hinged to the lifting frame 6, and the other end of the luffing cylinder 72 is hinged to the ear plate on the side wall of the rotating shaft 71, and the rotation angle of the rotating shaft 71 can be controlled by the luffing cylinder 72. One end of the leg 73 is fixed to the rotating shaft 71, and the other end of the leg 73 is hinged to the walking wheel group 8.

[0078] During operation, the swing shaft 71 is driven by the variable amplitude oil cylinder 72 to adjust the angle of the support leg 73, thereby achieving height adjustment of the traction frame 61, so as to control the height of the compound soil-turning heavy harrow and the ground.

[0079] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A composite soil turning heavy harrow, comprising a connecting frame (1); It is characterized in that Also includes: A deep rotary tillage assembly (2) fixed to the front end of the connecting frame (1); A soil turning screen assembly (3) fixed to the middle part of the connecting frame (1); A shallow rotary tillage assembly (4) fixed to the rear end of the connecting frame (1); Wherein, the soil turning screen assembly (3) comprises: A plurality of plowshares (31), wherein the upper ends of the plowshares (31) are fixedly connected to the connecting frame (1); A plurality of soil screening rods (32), wherein the front ends of the soil screening rods (32) are fixedly connected to the rear side of the plow blade (31), the front parts of the soil screening rods (32) have an arc-shaped upper convex portion (321) protruding upward, the rear parts of the soil screening rods (32) have an arc-shaped lower convex portion (322) protruding downward, and the rear ends of the soil screening rods (32) have a soil raking portion (323) extending upward; The shallow rotary tillage assembly (4) is located above the lower convex portion (322), and the shallow rotary tillage assembly (4) and the soil harrowing portion (323) are connected to the connecting frame (1) via a floating assembly (5); A triangular soil dividing block (311) is fixed to the rear side of each of the plowshares (31), and each of the soil dividing blocks (311) is fixedly connected to a plurality of soil screening bars (32), with the spacing between adjacent soil screening bars (32) being equal; A ploughing strip (324) is fixed to the front side of the lower convex portion (322) of the soil screening rod (32); the ploughing strip (324) has a triangular cross section, so that the lower convex portion (322) can plough the soil smoothly. The blade diameter of the deep rotary tillage component (2) is greater than the blade diameter of the shallow rotary tillage component (4), and the rotation speed of the deep rotary tillage component (2) is less than the rotation speed of the shallow rotary tillage component (4).

2. A composite soil turning heavy harrow according to claim 1, characterized in that: A plow bar (33) is fixed to the upper end of the plow blade (31), and external positioning grooves (331) are respectively provided on the front and rear sides of the upper part of the plow bar (33); A pair of middle longitudinal beams (11) are fixed to the connecting frame (1) and are clamped on the front and rear sides of the plow bar (33). An inner positioning groove (111) that fits in with the outer positioning groove (331) is formed on one side of the middle longitudinal beam (11) close to the plow bar (33).

3. The composite soil turning heavy harrow according to claim 1, characterized in that: The floating assembly (5) comprises: A pair of L-shaped swivel arms (51), the front ends of the two swivel arms (51) being symmetrically hinged to two sides of the connecting frame (1) via rotating shafts (511); A limiting beam (52) is fixedly connected to the rear ends of the two rotating arms (51); both ends of the limiting beam (52) are against the upper side of the connecting frame (1); Two spring assemblies (53) are correspondingly connected between the rear end of the swivel arm (51) and the connecting frame (1); Wherein, the spring assembly (53) comprises: A spring seat (531) fixed on one side of the swivel arm (51); A spring column (532) is fixed on the spring seat (531); the upper end of the spring column (532) is opposite to the connecting frame (1) and a distance is left between the spring column and the connecting frame (1); The spring (533) is sleeved on the spring column (532); the lower end of the spring (533) abuts against the spring seat (531), and the upper end of the spring (533) abuts against the connecting frame (1).

4. The composite soil turning heavy harrow according to claim 3, characterized in that: The two ends of the shallow rotary tillage assembly (4) are fixed to the middle of the rotary arms (51) on both sides through supports; The soil raking portion (323) in the soil screening rod (32) is fixedly connected to a longitudinal connecting rod (34), and connecting rib plates (35) are fixedly connected to both ends of the longitudinal connecting rod (34), and the connecting rib plates (35) are fixedly connected to the rear end of the swivel arm (51) on the corresponding side.

5. A heavy harrow synchronous lifting control system, comprising a composite soil turning heavy harrow as claimed in any one of claims 1 to 4, characterized in that: Also includes: A lifting frame (6), the front end of the lifting frame (6) being fixedly connected to a traction frame (61); a plurality of the composite soil turning heavy harrows are connected to the lower side of the lifting frame (6) via a connecting frame (1); A plurality of luffing brackets (7) and a running wheel group (8), wherein the luffing bracket (7) is connected below the lifting frame (6), and the running wheel group (8) is mounted on the luffing bracket (7).

6. A heavy harrow synchronous lifting control system according to claim 5, characterized in that: The luffing bracket (7) comprises: A rotating shaft (71), wherein both ends of the rotating shaft (71) are rotatably connected to the lifting frame (6); The luffing oil cylinder (72) is used to drive the rotary shaft (71) to rotate; one end of the luffing oil cylinder (72) is hinged to the lifting frame (6), and the other end of the luffing oil cylinder (72) is hinged to the ear plate on the side wall of the rotary shaft (71); A supporting leg (73), one end of the supporting leg (73) being fixed to the rotary shaft (71), and the other end of the supporting leg (73) being mounted with the walking wheel set (8).

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