Minimum-tillage and no-tillage profiling anti-blocking seeding unit

Abstract

The utility model relates to a less-tillage and no-tillage profiling anti-blocking seeding unit, which belongs to the technical field of agricultural seeding equipment and comprises a rack, a power main shaft horizontally arranged on the rack in a penetrating manner and rotationally connected with the rack, a plurality of transmission shells arranged on the power main shaft in a sleeving manner at equal intervals along the axial direction of the power main shaft, and a plurality of rotary blade groups, each rotary tillage cutter group comprises a cutter shaft and a plurality of rotary tillage cutters which are fixed at two ends of the cutter shaft at equal intervals in a surrounding manner along the circumferential direction of the cutter shaft, the plurality of transmission mechanisms are respectively arranged on the transmission shells, and the plurality of springs are respectively connected between each transmission shell and the rack. Straw on the earth surface is cut and pushed aside, the situation that the straw winds and blocks the furrow opener is avoided, meanwhile, the inclination angle of each transmission shell can be automatically adjusted through a spring according to the fluctuation condition of the earth surface, the soil penetrating depth of the rotary blade is kept consistent, the cleaning effect on the straw on the earth surface is guaranteed, and the uniformity of protective farming and seeding is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural sowing equipment, and in particular relates to a low-tillage and no-tillage profiling and anti-blocking sowing unit. Background Art

[0002] Conservation tillage is a sustainable agricultural farming technology that eliminates plowing and performs no-till sowing while retaining the surface cover, so as to retain the soil's self-protection function and construction function, thereby reducing soil erosion and protecting the farmland's ecological environment. Since the surface is covered with a large amount of straw after the previous crop is harvested, the flatness of the no-till surface is poor, and the straw is easy to be entangled in the furrow opener of the no-till seeder during conservation tillage. Especially when sowing wheat, due to the reduced row spacing of wheat, the straw is easy to be blocked between the furrow openers of adjacent rows, which in turn affects the stability of the furrow opener, resulting in inconsistent furrowing depths for sowing, resulting in poor uniformity of sowing.

[0003] At present, in order to improve the uniformity of conservation tillage sowing in the prior art, rotatable cutters are mostly set on both sides of the furrow opener, and the straw on the surface is cut and pushed away by the rotation of the cutter, which can prevent the straw from entangled and blocking the furrow opener. However, multiple cutters of the existing no-tillage and minimum-tillage seeders are all mounted on the same drive shaft, but due to the different straw thicknesses at different positions on the surface, the depth of cutters entering the soil in different sowing rows is inconsistent during the tillage process. For example, when the straw thickness of the sowing row on one side is thicker and the straw thickness of the sowing row on the other side is thinner, the cutter on the side with thinner straw thickness cannot fit on the surface, making the cutter's depth of entry into the soil shallower, and the cutter's cleaning effect on the straw on the surface is poor, resulting in limited improvement in the uniformity of conservation tillage sowing. Utility Model Content

[0004] In view of this, the utility model provides a low-tillage and no-till contoured anti-blocking sowing unit to address the deficiencies in the prior art. The utility model can cut and push away the straw on the ground surface, and at the same time, the penetration depth of the rotary tiller is consistent, thereby ensuring the cleaning effect of the straw on the ground surface.

[0005] The technical solution of the utility model is: a low-tillage and no-tillage contour-preventing sowing unit, comprising a frame, a power main shaft horizontally penetrated on the frame and rotatably connected thereto, a plurality of transmission housings are sleeved on the power main shaft at equal intervals along the axial direction of the power main shaft, the transmission housing is rotatably connected to the power main shaft, a plurality of rotary tilling blade groups, each of the rotary tilling blade groups comprises a blade shaft and a plurality of rotary tilling blades circumferentially and equidistantly fixed at both ends thereof, the blade shaft penetrated at one end of the transmission housing away from the power main shaft, the blade shaft and the power main shaft are parallel to each other and rotatably connected to the transmission housing, a plurality of transmission mechanisms are respectively arranged on the transmission housing, an input end of the transmission mechanism is connected to the power main shaft, and an output end thereof is connected to the blade shaft so that the blade shaft rotates, and a plurality of springs are respectively connected between each transmission housing and the frame so that the transmission housing rotates toward a side close to the ground surface.

[0006] Preferably, an upper slide plate is horizontally arranged directly above the power main shaft and is perpendicular to the axis of the power main shaft, a lower slide plate is vertically fixed to the end of the upper slide plate away from the rotary tiller blade group, the lower slide plate is fixedly connected to the frame, two webs are hinged on both sides of the transmission housing, and the hinge shaft and the power main shaft are parallel to each other, the webs and the transmission housing are cross-arranged, the two ends of the webs are respectively slidably connected to the upper slide plate and the lower slide plate, the springs are respectively arranged on the upper slide plate and the lower slide plate and are respectively parallel to each other, one end of the spring away from the rotary tiller blade group is connected to the upper slide plate or the lower slide plate, and the other end is connected to the end of the web.

[0007] Preferably, the upper slide plate and the lower slide plate are slidably connected with sliders respectively, the sliders are hinged to the ends of the webs, and one end of the spring close to the rotary tiller blade group is connected to the slider.

[0008] Preferably, the slider is respectively provided with end covers at both ends of its sliding direction, and an oil scraper is fixedly provided on the side of the end cover away from the slider, and the oil scraper abuts against the inner walls of the upper slide groove plate and the lower slide groove plate, and an oil nozzle is fixedly provided on one of the oil scrapers, and the mouth of the oil nozzle faces the inner wall of the upper slide groove plate or the lower slide groove plate, respectively, and the oil nozzle is connected to the lubrication system through a pipeline.

[0009] Preferably, two anti-blocking baffles are vertically fixed on both sides of the upper slide chute plate and are parallel to each other, the anti-blocking baffles are fixedly connected to both sides of the lower slide chute plate, and the main power shaft passes through the anti-blocking baffles and is rotatably connected thereto.

[0010] Preferably, it also includes a three-point suspension component, which is located between two adjacent upper slide groove plates, one end of the three-point suspension component is fixedly connected to the frame, and the other two ends are fixedly connected to the upper slide groove plates.

[0011] Preferably, the transmission mechanism includes a driving pulley, a driven pulley and a synchronous belt, the driving pulley is sleeved on the power main shaft, the driven pulley is sleeved on the knife shaft, the driven pulley and the driving pulley are located inside the transmission housing, and the synchronous belt is sleeved on the driving pulley and the driven pulley and meshed with them.

[0012] Preferably, it also includes a tensioning wheel, which is rotatably connected to the inside of the transmission housing and is parallel to the axis of the driving pulley. The tensioning wheel is located between the driving pulley and the driven pulley, and the inner side of the synchronous belt is meshed with the tensioning wheel.

[0013] Preferably, it also includes a gearbox and a universal shaft, wherein the gearbox is fixed on the frame, the power main shaft is coaxially fixedly connected to the output shaft of the gearbox, one end of the universal shaft is connected to the input shaft of the gearbox, and the other end is connected to the power output part of the traction vehicle.

[0014] Preferably, a plurality of furrow openers are fixedly provided on the side of the frame away from the traction vehicle, each of the furrow openers is arranged opposite to the transmission housing, and the frame is rotatably connected to a pressure roller on the side of the furrow opener away from the transmission housing, and the pressure roller is parallel to the axial direction of the power main shaft.

[0015] Compared with the prior art, the utility model provides a low-tillage and no-tillage contour-proof sowing unit, which, through the cooperation of the main power shaft on the frame, the rotary tillage blade group on the transmission housing and the transmission mechanism, can realize the rotation of the rotary tillage blade group driven by the main power shaft, thereby cutting and pushing away the straw on the surface to prevent the straw from being entangled and clogging the furrow opener. At the same time, each transmission housing can automatically adjust its inclination angle according to the undulation of the surface by a spring, so that the penetration depth of the rotary tillage blade remains consistent, ensuring the cleaning effect of the straw on the surface and effectively improving the uniformity of protective tillage sowing. The contour-proof sowing unit of the utility model has good effect, is easy to use, has strong practicality, and is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the sowing unit of the utility model;

[0017] Figure 2 It is a schematic diagram of the installation of the transmission housing of the utility model;

[0018] Figure 3 It is a schematic diagram of spring installation of the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the slider of the utility model;

[0020] Figure 5 It is a schematic diagram of the transmission mechanism of the utility model;

[0021] Figure 6It is a three-dimensional diagram of the rotary tillage blade group of the utility model;

[0022] Figure 7 It is a front view of the knife shaft of the utility model;

[0023] Figure 8 It is a side view of the knife shaft of the utility model;

[0024] Fig. 9 This utility model Figure 7 AA section view in.

[0025] Description of the reference numerals: 1-three-point suspension member, 2-frame, 3-gearbox, 4-spring, 5-cardan shaft, 6-transmission housing, 7-rotary tillage blade group, 8-ditch opener, 9-pressing roller, 10-seed box, 401-upper slide plate, 402-slider, 403-web, 404-slider pin, 406-tension wheel pin, 407-lower slide plate, 408-anti-blocking baffle, 412-middle column Pin, 402-1 oil nozzle, 402-3 oil scraper, 402-4 end cover, 402-5 slider side plate, 601-driven pulley, 602-tensioning wheel, 603-synchronous belt, 604-power main shaft, 605-driving pulley, 701-rotary tiller, 702-knife disc, 703-shaft end baffle, 704-rolling bearing, 705-keyway sleeve, 706-ordinary sleeve, 707-knife shaft. DETAILED DESCRIPTION

[0026] The utility model provides a low-tillage and no-tillage profiling and anti-blocking sowing unit, which is combined with Figures 1 to 9 The utility model is described with reference to the structural schematic diagram of FIG.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solution of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] For example, the patent document with application number CN201711017897.9 discloses a no-till seeding machine anti-blocking device, which installs disc knives on both sides of the furrow opener to cut and push away the straw that has been or is about to be entangled, and can prevent wheat straw and stubble from entanglement and blocking the furrow opener shovel handle. However, when the surface terrain is undulating, the disc knives on both sides of the adjacent row furrow openers have different cutting depths, which affects the cleaning effect of the straw on the surface, thereby reducing the quality of conservation tillage sowing.

[0029] As shown in the figure, Figure 1 This is a stereoscopic diagram of the sowing unit of this embodiment, a low-tillage and no-tillage contour-preventing sowing unit, comprising a frame 2, a power main shaft 604 horizontally penetrated on the frame 2 and rotatably connected thereto, a plurality of transmission housings 6 are sleeved on the power main shaft 604 at equal intervals along the axial direction of the power main shaft 604, the transmission housing 6 is rotatably connected to the power main shaft 604, a plurality of rotary tilling knife groups 7 each rotary tilling knife group 7 comprises a knife shaft 707 and a plurality of rotary tilling knives 701 circumferentially and evenly spaced around and fixed at both ends thereof along the knife shaft 707, the knife shaft 707 penetrates at one end of the transmission housing 6 away from the power main shaft 604, the knife shaft 707 and the power main shaft 604 are parallel to each other and are rotatably connected to the transmission housing 6, a plurality of transmission mechanisms are respectively arranged on the transmission housing 6, the input end of the transmission mechanism is connected to the power main shaft 604, and the output end thereof is connected to the knife shaft 707 so that the knife shaft 707 rotates, and a plurality of springs 4 are respectively connected between each transmission housing 6 and the frame 2 so that the transmission housing 6 rotates toward the side close to the ground surface.

[0030] In this embodiment, the power main shaft 604 is used to drive the knife shaft 707 and the rotary tiller 701 to rotate, which can effectively clean up the surface debris and avoid the entanglement of straw, clogging of the furrow opener or accumulation of soil during the sowing process, making the surface smoother. Under flat surface conditions, the furrow opener can also maintain a stable furrowing depth to ensure uniform sowing of seeds.

[0031] In this embodiment, the change in the inclination angle of the transmission housing 6 changes the intersection point of the rotary tillage blade group 7 and the ground, ensuring that the cutting depth of the rotary tillage blade 701 is consistent, achieving a profiling effect, and can effectively solve the problem of poor consistency in sowing depth between rows caused by uneven surface of existing no-tillage or minimum tillage seeders. At the same time, the deformation force of the spring reduces the profiling allergy during the profiling process.

[0032] Figure 6 This is a three-dimensional diagram of the rotary tillage blade assembly of this embodiment. Figure 7 This is a front view of the knife shaft of this embodiment. Figure 8 This is a side view of the knife shaft of this embodiment. Fig. 9AA is a cross-sectional view of the cutter shaft in this embodiment. The rotary tillage cutter group 7 in this embodiment also includes 702-cutter disc, 703-shaft end baffle, 704-rolling bearing, 705-keyway sleeve, 706-ordinary sleeve, 705-keyway sleeve is sleeved on the middle part of the cutter shaft 707 (the cross section of the cutter shaft 707 is a regular hexagon), the driven pulley 601 is installed on the keyway sleeve 705, and the driven pulley 601 and the keyway sleeve 705 are circumferentially fixed by a flat key, the rolling bearing 704 is sleeved on both ends of the keyway sleeve 705, and the ordinary sleeve 704 is respectively sleeved on the cutter shaft 707 on both sides of the keyway sleeve 705. The tilling blade discs 702 are respectively mounted on common sleeves 704, and the rotary tilling blades 701 are respectively fixed on the rotary tilling blade discs 702 along the circumferential direction. The rotary tilling blades 701 are fixed on the rotary tilling blade discs 702 by bolts. The rotary tilling blades 701 on the rotary tilling blade discs 702 are arranged in a spiral shape, and the spiral arrangement directions of the rotary tilling blades 701 at both ends of the blade shaft 707 are opposite. The outer end of the rolling bearing 704 is connected to the inner disk surface of the rotary tilling blade disc 702, and the shaft end of the blade shaft 707 is equipped with a shaft end baffle 703, the inner side of the shaft end baffle 703 is tightly attached to the outer disk of the rotary tilling blade disc 702, and the shaft end baffle 703 is mounted on the blade shaft 707 by screws to axially constrain the parts on the shaft.

[0033] In this embodiment, the rolling bearing 704 can reduce the friction resistance of the rotary tiller blade 702 during rotation, thereby ensuring that the rotary tiller blade 702 can rotate smoothly and improving the operating efficiency and service life of the equipment. The outer side of the rolling bearing 704 is fixedly connected to the transmission housing 6 through a stable support structure to ensure that the entire rotary tiller blade group maintains a stable and precise motion trajectory during operation. This structure can effectively disperse the load, avoid concentrated stress from causing damage to the equipment, and improve the reliability and durability of the overall device.

[0034] In this embodiment, the spacing between the rotary tillers on both sides of the transmission housing 6 is 120 mm, and the center spacing between two adjacent groups of transmission housings 6 is 280 mm, which can meet the agronomic requirements of wide and narrow row sowing of wheat.

[0035] Figure 2 This is a schematic diagram of the installation of the transmission housing of this embodiment. Figure 3This is a schematic diagram of the spring installation of this embodiment. Preferably, an upper slide plate 401 is horizontally arranged just above the power main shaft 604 and is perpendicular to the axis of the power main shaft 604. A lower slide plate 407 is vertically fixed to the end of the upper slide plate 401 away from the rotary tiller blade group 7. The lower slide plate 407 is fixedly connected to the frame 2. Two webs 403 are hinged on both sides of the transmission housing 6. An intermediate column pin 412 is pierced on the transmission housing 6 and is rotatably connected thereto. The intermediate column pin 412 is connected to the power main shaft. 604 are parallel to each other, the web 403 is fixedly connected to the end of the middle column pin 412, the web 403 is cross-arranged with the transmission housing 6, the two ends of the web 403 are respectively slidably connected to the upper slide plate 401 and the lower slide plate 407, the spring 4 is arranged one by one on the upper slide plate 401 and the lower slide plate 407 and is respectively parallel to each other, one end of the spring 4 away from the rotary tiller blade group 7 is connected to the upper slide plate 401 or the lower slide plate 407, and the other end is connected to the end of the web 403.

[0036] In this embodiment, the upper slide plate 401, the lower slide plate 407, the web 403 and the spring 4 cooperate to form a double-spring cross quadrilateral mechanism. Through up and down floating adjustment, it is ensured that the rotary tiller can closely fit the ground when the terrain fluctuates, so as to perform effective cleaning and turning operations.

[0037] In this embodiment, the double spring cross quadrilateral mechanism uses the middle pin 412 for positioning. There is a 50mm pin groove on the transmission housing 6 (the pin groove is arranged along the length direction of the transmission housing 6, and the upper end of the pin groove is 140mm away from the center line of the power main shaft 604). The middle pin 412 is inserted into the pin groove, and the pin hole of the web is located at the midpoint of the web. The middle pin 412 is connected with the pin hole on the web. When the terrain fluctuates, the spring 4 is squeezed or compressed, so that the position of the slider 402 on the upper slide plate 401 and the lower slide plate 407 changes, and then the inclination angle of the web 403 connected to the slider is adjusted, so that the relative height of the transmission housing 6 and the rotary blade group 7 to the ground remains unchanged, thereby achieving the goal of profiling, so as to make the sowing depth consistent.

[0038] In this embodiment, the double-spring cross-quadrilateral mechanism can adjust its own height in time when encountering ground protrusions or depressions, maintain the contact stability between the rotary tiller and the ground, and thus avoid the influence of surface debris on the consistency of subsequent sowing depth.

[0039] The contouring function of the double-spring cross-quadrangular mechanism and the smooth operation of the rotary tiller in this embodiment act together on the ground surface to provide a relatively consistent working environment for the furrow opener, thereby ensuring uniform sowing depth of seeds.

[0040] In this embodiment, one end of the spring on the upper slide plate is fixed to the rear of the upper slide plate, 100 mm from the front of the frame, and the other end is fixed to the slider. The initial position of the slider 402 on the upper slide plate is located at the front end of the upper slide plate, 490 mm from the front of the frame 2.

[0041] In this embodiment, one end of the spring on the lower slide chute plate is fixed to the upper part of the slide chute plate, and the other end is fixed to the slider. The initial position of the slider 402 on the upper slide chute plate is located at the lower part of the slide chute plate, 540 mm away from the bottom surface of the frame 2; at the initial position, affected by gravity, the spring on the upper slide chute plate is in a slightly compressed state, and the spring on the lower slide chute plate is in a slightly stretched state; the slider is an I-shaped structure that cooperates with the slide chute, and is respectively embedded in the slide chute of the upper and lower slide chute plates, and can move back and forth in the slide chute.

[0042] Preferably, a slider 402 is slidably connected to the upper slide plate 401 and the lower slide plate 407 respectively, the slider 402 is hinged to the end of the web 403, and one end of the spring 4 close to the rotary blade group 7 is connected to the slider 402.

[0043] The slider 402 in this embodiment is a T-shaped guide slider, and the sliding friction coefficient between the slider and the guide rail is lower, and the operating noise is also lower.

[0044] In this embodiment, two slider side plates 402-5 are fixedly provided on the side of the slider 402 away from the upper slide groove plate 401 or the lower slide groove plate 407. The slider side plates 402-5 are respectively parallel to the sliding direction of the slider 402. There is a pin hole with a diameter of 10 mm on the two slider side plates 402-5. A slider pin 404 is passed through the pin hole and is rotatably connected to it. The spring 4 is fixedly connected to the slider pin 404.

[0045] Figure 4 This is a three-dimensional diagram of the slider of this embodiment. Preferably, the slider 402 is respectively fixed with end covers 402-4 at both ends of its sliding direction, and an oil scraper 402-3 is fixedly provided on the side of the end cover 402-4 away from the slider 402. The oil scraper 402-3 abuts against the inner walls of the upper slide plate 401 and the lower slide plate 407. An oil nozzle 402-1 is fixedly provided on one of the oil scrapers 402-3, and the mouth of the oil nozzle 402-1 faces the inner wall of the upper slide plate 401 or the lower slide plate 407, and the oil nozzle 402-1 is connected to the lubrication system through a pipeline.

[0046] In this embodiment, the lubricating oil sprayed by the oil nozzle 402-1 is mainly used to lubricate the slider 402 and its related parts to reduce friction and wear. The lubricating oil is directly sprayed on the sliding surfaces of the upper slide plate 401 and the lower slide plate 407 by the oil nozzle 402-1 to ensure that they are always in a lubricated state during the working process. The excess lubricating oil will flow back to the oil tank or collector of the system for recycling.

[0047] In this embodiment, the end cover 402 - 4 can seal and protect both ends of the slider 402 , prevent external impurities such as dust and dirt from entering the interior of the slider, and keep the interior clean.

[0048] In this embodiment, the oil scraper 402-3 can control and manage the distribution of the lubricating oil. It is located at the front and rear ends of the slider 402, and scrapes the sliding surfaces of the upper slide plate 401 and the lower slide plate 407 to ensure that the lubricating oil is evenly distributed on the slider surface, while preventing excessive accumulation of lubricating oil, thereby achieving efficient lubrication. This helps to maintain the normal operation of the slider and extend its service life.

[0049] Preferably, two anti-blocking baffles 408 are vertically fixed on both sides of the upper slide plate 401 and are parallel to each other, the anti-blocking baffles 408 are fixedly connected to both sides of the lower slide plate 407, and the main power shaft 604 passes through the anti-blocking baffles 408 and is rotatably connected thereto.

[0050] Preferably, a three-point suspension component 1 is further included, and the three-point suspension component 1 is located between two adjacent upper slide groove plates 401 , one end of the three-point suspension component 1 is fixed to the frame 2 , and the other two ends are fixedly connected to the upper slide groove plates 401 .

[0051] In this embodiment, the three-point suspension component 1 is fixedly connected to the frame 2 and the upper slide plate 401 by welding, and the three-point suspension component 1 is connected to the traction vehicle by a special connecting piece.

[0052] Figure 5 This is a schematic diagram of the transmission mechanism of this embodiment. Preferably, the transmission mechanism includes a driving pulley 605, a driven pulley 601 and a synchronous belt 603. The driving pulley 605 is sleeved on the main power shaft 604, the driven pulley 601 is sleeved on the knife shaft 707, the driven pulley 601 and the driving pulley 605 are located inside the transmission housing 6, and the synchronous belt 603 is sleeved on the driving pulley 605 and the driven pulley 601 and meshed with them.

[0053] In this embodiment, since the rotary tillage blade group floats up and down during the sowing operation, the transmission spacing changes. In this embodiment, the active pulley 605, the driven pulley 601 and the synchronous belt 603 are used together to solve the problem of transmission spacing changes during the sowing process and ensure the stability and accuracy of the transmission.

[0054] Preferably, it also includes a tensioning wheel 602, which is rotatably connected to the inside of the transmission housing 6 and is parallel to the axis of the driving pulley 605. The tensioning wheel 602 is located between the driving pulley 605 and the driven pulley 601, and the inner side of the synchronous belt 603 is meshed with the tensioning wheel 602.

[0055] The tensioning wheel 602 in this embodiment is provided with a tensioning wheel pin 406 and is rotatably connected to the tensioning wheel. Both ends of the tensioning wheel pin 406 are fixedly connected to the inner wall of the transmission housing 6. The tensioning wheel 602 is used to provide appropriate tension to compensate for the elongation and wear of the synchronous belt, reduce vibration and noise, extend the service life of the synchronous belt, improve the transmission efficiency, and adapt to changes in ambient temperature to ensure the long-term stable operation of the synchronous belt 603, thereby ensuring the reliability and stability of the transmission mechanism.

[0056] In addition, by reasonably setting the tension wheel, the optimal tension state of the synchronous belt can be maintained under different working conditions to prevent the synchronous belt from loosening and slipping, thereby improving the performance and life of the overall transmission mechanism.

[0057] Preferably, it also includes a gearbox 3 and a universal shaft 5. The gearbox 3 is fixed on the frame 2. The power main shaft 604 is coaxially fixedly connected with the output shaft of the gearbox 3. One end of the universal shaft 5 is connected to the input shaft of the gearbox 3, and the other end is connected to the power output part of the traction vehicle.

[0058] In this embodiment, a universal joint 5 is used to connect the power main shaft 604 to solve the problem of constantly changing spacing and angles between the power output parts of each single transmission relative to the traction vehicle, enhance stability and accuracy, and at the same time, through the power main shaft, each rotary tiller group obtains the required power.

[0059] In this embodiment, the power is transmitted from the power output part of the traction vehicle to the gearbox through the universal joint, and the power is transmitted to the knife shaft 707 and the knife disc 702 through the main power shaft 604 through the driving pulley 605, the synchronous belt 603, the tensioning wheel 602 and the driven pulley 601 assembled in the transmission housing 6, so that the rotary tiller 701 rotates.

[0060] Preferably, a plurality of furrow openers 8 are fixedly provided on the side of the frame 2 away from the traction vehicle, and each furrow opener 8 is arranged opposite to the transmission housing 6. The frame 2 is located on the side of the furrow opener 8 away from the transmission housing 6 and is rotatably connected to a pressure roller 9, and the pressure roller 9 is parallel to the axial direction of the main power shaft 604.

[0061] In this embodiment, a seed box 10 is built into the upper rear side of the frame 2, a seed meter is connected to the lower side of the seed box, a furrow opener 8 is fixed to the lower rear side of the frame 2, and a pressure roller 9 is fixed to the frame 2 behind the seed meter.

[0062] During conservation tillage and sowing operations, power is transmitted to the driving wheel through the gearbox, and then to the driven wheel through the synchronous belt. The knife shaft drives the rotary tiller to rotate. When the ground is convex, the rotary tiller knife group floats up, the slider on the lower slide chute plate moves up, and the slider on the upper slide chute plate moves forward, so that the spring on the lower slide chute plate provides a downward force and the spring on the upper slide chute plate provides a backward force; similarly, when the ground is concave, the rotary tiller knife group floats down, the slider on the lower slide chute plate moves down, and the slider on the upper slide chute plate moves backward. Since the position of the belly plate and the frame does not change, the tangent point between the rotary tiller knife group and the ground is changed, thereby ensuring the consistency of the cutting depth.

[0063] The above disclosure is only a preferred specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A low-tillage and no-tillage profiling and anti-blocking sowing unit, characterized in that: include: Rack (2); A power main shaft (604) is horizontally arranged on the frame (2) and is rotatably connected thereto; A plurality of transmission housings (6) are sleeved on the power main shaft (604) at equal intervals along the axial direction of the power main shaft (604), and the transmission housings (6) are rotatably connected to the power main shaft (604); A plurality of rotary tilling blade groups (7), each of the rotary tilling blade groups (7) comprising: a blade shaft (707) and a plurality of rotary tilling blades (701) fixed at both ends of the blade shaft (707) at equal intervals along the circumference of the blade shaft (707); the blade shaft (707) is disposed at one end of the transmission housing (6) away from the main power shaft (604); the blade shaft (707) and the main power shaft (604) are parallel to each other and are rotatably connected to the transmission housing (6); A plurality of transmission mechanisms are respectively arranged on the transmission housing (6), wherein the input end of the transmission mechanism is connected to the power main shaft (604), and the output end thereof is connected to the knife shaft (707) so as to rotate the knife shaft (707); A plurality of springs (4) are respectively connected between each transmission housing (6) and the frame (2) so as to enable the transmission housing (6) to rotate toward a side close to the ground surface.

2. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 1, characterized in that: An upper slide plate (401) is horizontally arranged directly above the main power shaft (604) and is perpendicular to the axis of the main power shaft (604). A lower slide plate (407) is vertically fixedly arranged at one end of the upper slide plate (401) away from the rotary tiller blade group (7). The lower slide plate (407) is fixedly connected to the frame (2). Two webs (403) are hinged on both sides of the transmission housing (6), and the hinge shaft is parallel to the main power shaft (604). The webs (403) are connected to the main power shaft (604). 03) is arranged crosswise with the transmission housing (6), the two ends of the web (403) are respectively slidably connected with the upper slide plate (401) and the lower slide plate (407), the spring (4) is arranged one by one on the upper slide plate (401) and the lower slide plate (407) and is respectively parallel to each other, one end of the spring (4) away from the rotary tiller blade group (7) is connected to the upper slide plate (401) or the lower slide plate (407), and the other end is connected to the end of the web (403).

3. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 2 is characterized in that: The upper slide plate (401) and the lower slide plate (407) are respectively slidably connected with a slider (402), the slider (402) is hinged to the end of the web (403), and one end of the spring (4) close to the rotary tiller blade group (7) is connected to the slider (402).

4. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 3 is characterized in that: The slider (402) is respectively fixed with end covers (402-4) at both ends of the slider (402) in the sliding direction, and an oil scraper (402-3) is fixedly provided on the side of the end cover (402-4) away from the slider (402), and the oil scraper (402-3) is in contact with the inner walls of the upper slide plate (401) and the lower slide plate (407), and an oil nozzle (402-1) is fixedly provided on one of the oil scrapers (402-3), and the mouth of the oil nozzle (402-1) faces the inner wall of the upper slide plate (401) or the lower slide plate (407), and the oil nozzle (402-1) is connected with the lubrication system through a pipeline.

5. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 2, characterized in that: Two anti-blocking baffles (408) are vertically fixed on both sides of the upper slide plate (401) and are parallel to each other. The anti-blocking baffles (408) are fixedly connected to both sides of the lower slide plate (407). The main power shaft (604) passes through the anti-blocking baffles (408) and is rotatably connected thereto.

6. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 2, characterized in that: Also includes: A three-point suspension component (1), wherein the three-point suspension component (1) is located between two adjacent upper slide slot plates (401), one end of the three-point suspension component (1) is fixedly connected to the frame (2), and the other two ends are fixedly connected to the upper slide slot plates (401).

7. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 1, characterized in that: The transmission mechanism comprises: a driving pulley (605), a driven pulley (601) and a synchronous belt (603); the driving pulley (605) is sleeved on a power main shaft (604); the driven pulley (601) is sleeved on a knife shaft (707); the driven pulley (601) and the driving pulley (605) are located inside a transmission housing (6); and the synchronous belt (603) is sleeved on the driving pulley (605) and the driven pulley (601) and meshes with them.

8. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 1, characterized in that: Also includes: The tension wheel (602) is rotatably connected to the inside of the transmission housing (6) and is parallel to the axis of the driving pulley (605). The tension wheel (602) is located between the driving pulley (605) and the driven pulley (601), and the inner side of the synchronous belt (603) is meshed with the tension wheel (602).

9. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 1, characterized in that: Also includes: A gearbox (3) and a universal shaft (5), wherein the gearbox (3) is fixed on a frame (2), a power main shaft (604) is coaxially fixedly connected to an output shaft of the gearbox (3), one end of the universal shaft (5) is connected to an input shaft of the gearbox (3), and the other end is connected to a power output part of a traction vehicle.

10. The minimum tillage and no-tillage profiling and anti-blocking sowing unit according to claim 1, characterized in that: A plurality of furrow openers (8) are fixedly arranged on the side of the frame (2) away from the traction vehicle, and each of the furrow openers (8) is arranged opposite to the transmission housing (6). The frame (2) is rotatably connected to a pressure roller (9) on the side of the furrow opener (8) away from the transmission housing (6), and the pressure roller (9) is parallel to the axial direction of the main power shaft (604).

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