Minimum-tillage contouring anti-blocking seeding unit

Abstract

The application relates to a few no-tillage profiling anti-blocking seeding unit, belonging to the technical field of agricultural seeding equipment, which comprises a rack, a power shaft horizontally penetrating through the rack and being rotationally connected with the rack, a plurality of transmission housings being equidistantly sleeved on the power shaft along the axial direction of the power shaft, a plurality of rotary tillage blade groups, each rotary tillage blade group comprising a blade shaft and a plurality of rotary tillage blades being equidistantly fixed around both ends of the blade shaft along the circumferential direction of the blade shaft, a plurality of transmission mechanisms being respectively arranged on the transmission housings, and a plurality of springs being respectively connected between each transmission housing and the rack. The rotary tillage blade group can be driven to rotate by the power shaft, so that the straw on the ground surface can be cut and pushed away, the straw is prevented from winding and blocking the furrow opener, and meanwhile, the transmission housing can automatically adjust the inclination angle according to the ups and downs of the ground surface by the spring, so that the soil penetration depth of the rotary tillage blade is kept consistent, the cleaning effect on the straw on the ground surface is ensured, and the uniformity of the protective tillage and seeding is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of agricultural seeding equipment, and particularly relates to a few no-tillage contour anti-blocking seeding unit. BACKGROUND

[0002] The protective tillage is a sustainable agricultural tillage technology of canceling the plow tillage, no-tillage seeding under the premise of retaining the surface cover, retaining the self-protection function and creating function of the soil, thereby reducing the soil erosion of the farmland and protecting the sustainable agricultural environment of the farmland. Due to the fact that the surface is covered with a large amount of straw after the harvest of the previous crop, the flatness of the no-tillage surface is poor, and the straw is easy to be wound on the furrow opener of the no-tillage seeding machine during the protective tillage, especially when the wheat is seeded, since the row spacing of the wheat is reduced, the straw is easy to be blocked between the furrow openers of the adjacent rows, thereby affecting the stability of the furrow opener, causing the inconsistent seeding furrowing depth, and resulting in the poor seeding uniformity.

[0003] At present, in order to improve the uniformity of the protective tillage seeding, the existing technology mostly sets the rotatable cutter on both sides of the furrow opener, and the cutter is used to cut and push away the straw on the surface, which can avoid the straw winding and blocking the furrow opener. However, the multiple cutters of the existing no-tillage seeding machine are sleeved on the same driving shaft, but since the thickness of the straw on different positions of the surface is different, the depth of the cutter of different seeding rows into the soil is inconsistent during the tillage. For example, when the thickness of the straw of one side seeding row is thicker, and the thickness of the straw of the other side seeding row is thinner, the cutter located on the side of the thinner straw cannot be attached to the surface, so that the depth of the cutter into the soil is shallower, the cleaning effect of the cutter on the straw on the surface is poorer, and the improvement of the uniformity of the protective tillage seeding is limited. SUMMARY

[0004] Therefore, the present application provides a few no-tillage contour anti-blocking seeding unit to solve the problems in the prior art, and the present application can cut and push away the straw on the surface, and the depth of the rotary tillage cutter into the soil is consistent, thereby ensuring the cleaning effect of the cutter on the straw on the surface.

[0005] The technical scheme of the present application is: a few no-tillage profiling anti-blocking seeding unit, including rack, power shaft is horizontally arranged on the rack and is rotationally connected with the rack, a plurality of transmission housings are equidistantly sleeved on the power shaft along the axial direction of the power shaft, the transmission housing is rotationally connected with the power shaft, a plurality of rotary blades are arranged on the transmission housing, the rotary blade shaft is arranged on the transmission housing away from the power shaft, the rotary blade shaft is parallel to the power shaft and is rotationally connected with the transmission housing, a plurality of transmission mechanisms are arranged on the transmission housing, the input end of the transmission mechanism is connected with the power shaft, and the output end of the transmission mechanism is connected with the rotary blade shaft to rotate the rotary blade shaft, a plurality of springs are connected between each transmission housing and the rack to rotate the transmission housing towards the ground surface.

[0006] Preferably, the upper chute plate is vertically arranged above the power shaft and is perpendicular to the axis of the power shaft, the lower chute plate is vertically arranged on the end of the upper chute plate away from the rotary blade group, the lower chute plate is fixedly connected with the rack, the two sides of the transmission housing are hingedly connected with two webs, the hinge shafts of the two webs are parallel to the power shaft, the web is crosswise arranged with the transmission housing, the two ends of the web are slidably connected with the upper chute plate and the lower chute plate, the spring is arranged on the upper chute plate and the lower chute plate and is parallel to the upper chute plate and the lower chute plate, one end of the spring is connected with the upper chute plate or the lower chute plate away from the rotary blade group, and the other end of the spring is connected with the end of the web.

[0007] Preferably, the upper chute plate and the lower chute plate are slidably connected with a sliding block, the sliding block is hingedly connected with the end of the web, and one end of the spring close to the rotary blade group is connected with the sliding block.

[0008] Preferably, the sliding block is fixedly provided with an end cover at both ends in the sliding direction of the sliding block, the end cover is fixedly provided with an oil scraping plate on the side away from the sliding block, the oil scraping plate is abutted with the inner wall of the upper chute plate and the lower chute plate, one of the oil scraping plates is fixedly provided with an oil nozzle, the opening of the oil nozzle is respectively directed to the inner wall of the upper chute plate or the lower chute plate, and the oil nozzle is communicated with the lubricating system through a pipeline.

[0009] Preferably, the upper chute plate is vertically fixedly provided with two anti-blocking baffles on the two sides thereof and is parallel to the upper chute plate, the anti-blocking baffles are fixedly connected with the two sides of the lower chute plate, and the power shaft passes through the anti-blocking baffles and is rotationally connected with the anti-blocking baffles.

[0010] Preferably, the three-point suspension component is arranged between the two adjacent upper chute plates, one end of the three-point suspension component is fixedly connected with the rack, and the other two ends are fixedly connected with the upper chute plates.

[0011] Preferably, the transmission mechanism comprises a driving pulley, a driven pulley and a synchronous belt, the driving pulley is sleeved on the power shaft, the driven pulley is sleeved on the knife shaft, the driven pulley and the driving pulley are located in the transmission housing, and the synchronous belt is sleeved on and engaged with the driving pulley and the driven pulley.

[0012] Preferably, the transmission mechanism comprises a driving pulley, a driven pulley and a synchronous belt, the driving pulley is sleeved on the power shaft, the driven pulley is sleeved on the knife shaft, the driven pulley and the driving pulley are located in the transmission housing, and the synchronous belt is sleeved on and engaged with the driving pulley and the driven pulley.

[0013] Preferably, the transmission mechanism comprises a driving pulley, a driven pulley and a synchronous belt, the driving pulley is sleeved on the power shaft, the driven pulley is sleeved on the knife shaft, the driven pulley and the driving pulley are located in the transmission housing, and the synchronous belt is sleeved on and engaged with the driving pulley and the driven pulley.

[0014] Preferably, the transmission mechanism comprises a driving pulley, a driven pulley and a synchronous belt, the driving pulley is sleeved on the power shaft, the driven pulley is sleeved on the knife shaft, the driven pulley and the driving pulley are located in the transmission housing, and the synchronous belt is sleeved on and engaged with the driving pulley and the driven pulley.

[0015] Compared with the prior art, the few no-tillage profiling anti-blocking seeding unit provided by the application can realize the rotation of the rotary tillage knife group driven by the power shaft, so that the straw on the ground is cut and pushed away, the straw is prevented from winding and blocking the furrow opener, the inclination angle of each transmission housing can be automatically adjusted according to the undulation of the ground by the spring, so that the soil penetration depth of the rotary tillage knife remains consistent, the cleaning effect on the straw on the ground is ensured, and the uniformity of the protective tillage and seeding is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the perspective view of the seeding unit of the application;

[0017] Figure 2 is the schematic view of the transmission housing of the application;

[0018] Figure 3 is the schematic view of the spring of the application;

[0019] Figure 4 is the perspective view of the sliding block of the application;

[0020] Figure 5 is the schematic view of the transmission mechanism of the application;

[0021] Figure 6 is the perspective view of the rotary tillage knife group of the application;

[0022] Figure 7 is the front view of the knife shaft of the application;

[0023] Figure 8 is the side view of the knife shaft of the application;

[0024] Figure 9 is the A-A sectional view in the application Figure 7 .

[0025] Marked: 1-Three-point suspension component, 2-Housing, 3-Transmission case, 4-Spring, 5-Universal shaft, 6-Transmission housing, 7- Rotary tiller group, 8-Opener, 9-Pressing roller, 10-Seed box, 401-Upper chute plate, 402-Slider, 403-Web, 404-Slider pin, 406-Tension wheel pin, 407- Lower chute plate, 408-Blocking baffle, 412-Middle pin, 402-1 Oil nozzle, 402-3 Oil scraping plate, 402-4 End cover, 402-5 Slider side plate, 601-Driven pulley, 602-Tension pulley, 603-Synchronous belt, 604-Power shaft, 605-Driven pulley, 701-Rotary tiller, 702-Cutter head, 703-Axis end baffle, 704-Rolling bearing, 705-Key groove sleeve, 706-General sleeve, 707-Knife shaft. DETAILED DESCRIPTION

[0026] The application provides a few no-tillage profiling anti-blocking seeding unit, which will be described below in conjunction with the structural schematic view. Figures 1 to 9

[0027] In the description of the application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the technical solutions of the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0028] For example, the patent document with application number CN201711017897.9 discloses an anti-blocking device for no-tillage seeding machine, which installs disc knives on both sides of the opener to cut and push away the already entangled or about to be entangled straw, so as to prevent the entanglement and blockage of the opener handle by wheat straw and root stubble. However, when the ground surface topography fluctuates, the cutting and pushing depth of the disc knives on both sides of the adjacent row openers is different, which affects the cleaning effect of the straw on the ground surface, thereby reducing the quality of protective tillage seeding.​

[0029] As shown in the figure, Figure 1 As shown in the figure,

[0030] In the embodiment, the power shaft 604 drives the rotation of the knife shaft 707 and the rotary tiller 701, which can effectively clean the surface of the ground, avoid the entanglement of straw, the blockage of the furrow opener or the accumulation of soil clumps during the sowing process, and make the surface more flat. The flat surface condition can ensure the stable furrowing depth of the furrow opener and the uniform sowing of seeds.

[0031] In the embodiment, the change of the inclination angle of the transmission housing 6 changes the position of the cutting point of the rotary tiller group 7 and the ground, ensures the consistent cutting depth of the rotary tiller 701, realizes the profiling effect, effectively solves the problem of poor consistency of sowing depth between rows caused by uneven surface of the existing minimum tillage seeder, and reduces the profiling sensitivity in the profiling process by the deformation force of the spring.

[0032] Figure 6 As shown in the figure, Figure 7 As shown in the figure, Figure 8 As shown in the figure, Figure 9For the A-A cross-sectional view of the knife shaft in this embodiment, the rotary tillage blade group 7 in this embodiment also includes 702- cutter head, 703- shaft end baffle, 704- rolling bearing, 705- keyway sleeve, 706- ordinary sleeve, the keyway sleeve 705 is sleeved on the middle part of the knife shaft 707 (the cross section of the knife 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 fixed in the circumferential direction by means of a flat key, the rolling bearing 704 is sleeved on both ends of the keyway sleeve 705, the ordinary sleeve 704 is respectively sleeved on the knife shaft 707 on both sides of the keyway sleeve 705, the rotary tillage blade disc 702 is respectively installed on the ordinary sleeve 704, the rotary tillage blade 701 is respectively fixed in the circumferential direction on the rotary tillage blade disc 702, the rotary tillage blade 701 is fixed on the rotary tillage blade disc 702 by means of a bolt, the rotary tillage blade 701 on the rotary tillage blade disc 702 is arranged in a spiral shape, the rotary tillage blades 701 on both ends of the knife shaft 707 are arranged in opposite directions, the outer end of the rolling bearing 704 is connected with the inner disc surface of the rotary tillage blade disc 702, the shaft end of the knife shaft 707 is provided with the shaft end baffle 703, the inner side of the shaft end baffle 703 is tightly connected with the outer disc of the rotary tillage blade disc 702, and the shaft end baffle 703 is installed on the knife shaft 707 by means of a screw, so as to axially constrain the shaft part.

[0033] In this embodiment, the rolling bearing 704 can reduce the frictional resistance of the rotary tillage blade disc 702 during rotation, so as to ensure that the rotary tillage blade disc 702 can rotate smoothly, and improve the operation efficiency and service life of the equipment. The outer side of the rolling bearing 704 is fixedly connected with the transmission shell 6 through a stable support structure, so as to ensure that the whole rotary tillage blade group can keep a stable and accurate motion track during the working process. Through this structure, the load can be effectively dispersed, the concentrated stress can be avoided to damage the equipment, and the reliability and durability of the whole device can be improved.

[0034] In this embodiment, the distance between the rotary tillage blades on both sides of the transmission shell 6 is 120 mm, and the center distance between the adjacent two groups of transmission shells 6 is 280 mm, so that the agronomic requirements of wheat wide and narrow row seeding can be met.

[0035] Figure 2 For the transmission shell installation schematic diagram of this embodiment, Figure 3For the spring mounting schematic diagram of the embodiment, preferably, an upper sliding groove plate 401 is horizontally arranged above the power shaft 604 and perpendicular to the axis of the power shaft 604, a lower sliding groove plate 407 is vertically fixed at one end of the upper sliding groove plate 401 away from the rotary tiller group 7, the lower sliding groove plate 407 is fixedly connected with the frame 2, two web plates 403 are hingedly connected at two sides of the transmission housing 6, a middle pin 412 is arranged through the transmission housing 6 and rotationally connected with the transmission housing 6, the middle pin 412 is parallel to the power shaft 604, the web plates 403 are fixedly connected with the end of the middle pin 412, the web plates 403 are crossly arranged with the transmission housing 6, the two ends of the web plates 403 are slidingly connected with the upper sliding groove plate 401 and the lower sliding groove plate 407 respectively, the springs 4 are arranged on the upper sliding groove plate 401 and the lower sliding groove plate 407 one by one and parallel to the upper sliding groove plate 401 and the lower sliding groove plate 407 respectively, one end of the spring 4 away from the rotary tiller group 7 is connected with the upper sliding groove plate 401 or the lower sliding groove plate 407, and the other end is connected with the end of the web plate 403.

[0036] In the embodiment, the upper sliding groove plate 401, the lower sliding groove plate 407, the web plate 403 and the spring 4 cooperate to form a double-spring cross four-bar mechanism, and through up-and-down floating adjustment, it is ensured that the rotary tiller can closely adhere to the ground when the terrain changes, and effective cleaning and soil turning operations can be performed.

[0037] In the embodiment, the double-spring cross four-bar mechanism is positioned by the middle pin 412, the transmission housing 6 has a pin groove (the pin groove is arranged along the length direction of the transmission housing 6, and the upper end of the pin groove is 140 mm away from the center line of the power shaft 604) with a length of 50 mm, the middle pin 412 is arranged through the pin groove, and the pin hole of the web plate is located at the midpoint of the web plate. The middle pin 412 is connected with the pin hole on the web plate in a matched manner. When the terrain changes, the spring 4 is pressed or compressed, the position of the sliding block 402 on the upper sliding groove plate 401 and the lower sliding groove plate 407 changes, the inclination angle of the web plate 403 connected with the sliding block is adjusted, the relative height between the transmission housing 6 and the rotary tiller group 7 and the ground remains unchanged, the goal of profiling is achieved, and the seeding depth is consistent.

[0038] In the embodiment, the double-spring cross four-bar mechanism can timely adjust its height when encountering ground protrusions or depressions, maintain the contact stability of the rotary tiller and the ground, and thus avoid the influence of ground debris on the consistency of subsequent seeding depth.

[0039] In the embodiment, the profiling function of the double-spring cross four-bar mechanism and the stable operation of the rotary tiller jointly act on the ground, and provide a relatively consistent working environment for the furrow opener, so as to ensure the uniform depth of seed planting.

[0040] In this embodiment, one end of the spring on the upper chute plate is fixed at the rear of the upper chute plate, 100 mm away from the front of the rack, and the other end is fixed on the sliding block. The initial position of the sliding block 402 on the upper chute plate is located at the front end of the upper chute plate, 490 mm away from the front of the rack 2.

[0041] In this embodiment, one end of the spring on the lower chute plate is fixed at the upper part of the lower chute plate, and the other end is fixed on the sliding block. The initial position of the sliding block 402 on the upper chute plate is located at the lower part of the lower chute plate, 540 mm away from the bottom surface of the rack 2. At the initial position, the spring on the upper chute plate is in a slightly compressed state due to gravity, and the spring on the lower chute plate is in a slightly stretched state. The sliding block is a I-shaped structure matched with the sliding groove, which is embedded in the sliding groove of the upper and lower chute plates, and can move back and forth in the sliding groove.

[0042] Preferably, the upper chute plate 401 and the lower chute plate 407 are respectively connected with the sliding block 402, the sliding block 402 is hinged with the end of the web plate 403, and the spring 4 is connected with the sliding block 402 near one end of the rotary tiller group 7.

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

[0044] In this embodiment, the sliding block 402 is provided with two sliding block side plates 402-5 on the side away from the upper chute plate 401 or the lower chute plate 407, the sliding directions of the sliding block side plates 402-5 are parallel to each other, the two sliding block side plates 402-5 are provided with a column pin hole with a diameter of 10 mm, a sliding block column pin 404 is arranged in the column pin hole and is rotatably connected with the column pin hole, and the spring 4 is fixedly connected with the sliding block column pin 404.

[0045] Figure 4 The sliding block is a three-dimensional view of this embodiment. Preferably, the sliding block 402 is provided with end covers 402-4 at both ends in the sliding direction, the end covers 402-4 are provided with oil scraping plates 402-3 away from the sliding block 402, the oil scraping plates 402-3 abut against the inner walls of the upper chute plate 401 and the lower chute plate 407, one of the oil scraping plates 402-3 is provided with an oil nozzle 402-1, the mouths of the oil nozzles 402-1 respectively face the inner walls of the upper chute plate 401 or the lower chute plate 407, and the oil nozzles 402-1 are communicated with the lubricating system through pipelines.

[0046] In this embodiment, the lubricating oil sprayed by the oil nozzle 402-1 is mainly used for lubricating the sliding block 402 and its related components to reduce friction and wear. The lubricating oil is directly sprayed on the sliding surface of the upper chute plate 401 and the lower chute plate 407 by the oil nozzle 402-1, so that the sliding surface is always in a lubricated state during operation. The excess lubricating oil will flow back to the oil tank or collector of the system for recycling.

[0047] The end cover 402-4 in this embodiment can close and protect both ends of the sliding block 402, preventing external impurities such as dust and dirt from entering the inside of the sliding block, and keeping the inside clean.

[0048] The oil scraping plate 402-3 in this embodiment can control and manage the distribution of lubricating oil. It is located at the front and rear ends of the sliding block 402, and through scraping on the sliding surfaces of the upper chute plate 401 and the lower chute plate 407, it ensures that the lubricating oil is evenly distributed on the surface of the sliding block, while preventing excessive accumulation of lubricating oil, thereby achieving efficient lubrication effect. This helps to maintain the normal operation of the sliding block and prolong its service life.

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

[0050] Preferably, the three-point suspension component 1 is located between two adjacent upper chute plates 401, one end of the three-point suspension component 1 is fixed to the rack 2, and the other two ends are fixedly connected to the upper chute plate 401.

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

[0052] Figure 5 This is a schematic view of the transmission mechanism of the embodiment, preferably, the transmission mechanism comprises a driving pulley 605, a driven pulley 601 and a synchronous belt 603, the driving pulley 605 is sleeved on the power shaft 604, the driven pulley 601 is sleeved on the cutter 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 is engaged therewith.

[0053] In this embodiment, since the rotary tillage blade set floats up and down during the seeding operation, the transmission distance changes. In this embodiment, the driving pulley 605, the driven pulley 601 and the synchronous belt 603 are used in cooperation to solve the problem of transmission distance change during seeding, and to ensure the stability and precision of transmission.

[0054] Preferably, the tensioner 602 is rotatably connected to the inside of the transmission housing 6 and is parallel to the axis of the driving pulley 605, the tensioner 602 is located between the driving pulley 605 and the driven pulley 601, and the inside of the synchronous belt 603 is engaged with the tensioner 602.

[0055] The tensioning wheel 602 in the embodiment is provided with a tensioning wheel pin 406 and is rotationally connected with the tensioning wheel pin 406, two ends of the tensioning wheel pin 406 are fixedly connected with the inner wall of the transmission shell 6, proper tension is provided by the tensioning wheel 602 to compensate the elongation and wear of the synchronous belt, reduce vibration and noise, prolong the service life of the synchronous belt, improve the transmission efficiency, and adapt to the change of environmental temperature to ensure long-term stable operation of the synchronous belt 603, and ensure the reliability and stability of the transmission mechanism.

[0056] In addition, by reasonably setting the tensioning wheel, the optimal tensioning state of the synchronous belt can be maintained under different working conditions, the relaxation and slipping of the synchronous belt are prevented, and thus the performance and service life of the overall transmission mechanism are improved.

[0057] Preferably, the transmission mechanism further comprises a gearbox 3 and a universal shaft 5, the gearbox 3 is fixed on the frame 2, the power shaft 604 is coaxially and fixedly connected with the output shaft of the gearbox 3, one end of the universal shaft 5 is connected with the input shaft of the gearbox 3, and the other end is connected with the power output part of the towing vehicle.

[0058] In the embodiment, the universal shaft 5 is used to connect the power shaft 604, the problem that the distance and angle between each single transmission and the power output part of the towing vehicle are constantly changing is solved, the stability and precision are enhanced, and the required power is obtained for each rotary tillage blade group through the power shaft.

[0059] In the embodiment, the power is transmitted from the power output part of the towing vehicle to the gearbox through the universal joint, and then is transmitted to the blade shaft 707 and the cutter head 702 through the driven pulley 601, the tensioning wheel 602, the synchronous belt 603 and the driving pulley 605 assembled in the transmission shell 6 in sequence through the power shaft 604, so that the rotary tillage blade 701 rotates.

[0060] Preferably, a plurality of furrowers 8 are fixed on the side of the frame 2 away from the towing vehicle, each furrower 8 is arranged opposite to the transmission shell 6, and a roller 9 is rotationally connected to the side of the frame 2 away from the transmission shell 6.

[0061] In the embodiment, the gearbox 10 is fixed on the upper side of the frame 2, the seed box is connected with the seed metering device, the furrower 8 is fixed on the lower side of the frame 2, and the roller 9 is fixed on the frame 2 after the seed metering device.

[0062] During the seeding operation of the protective tillage, power is transmitted to the driving wheel through the gearbox, and then transmitted to the driven wheel through the synchronous belt, and the knife shaft drives the rotary tiller to rotate. When the ground is raised, the rotary tiller group floats up, the slider on the lower sliding groove plate moves up, and the slider on the upper sliding groove plate moves forward, so that the spring on the lower sliding groove plate provides a downward force, and the spring on the upper sliding groove plate provides a backward force. Similarly, when the ground is depressed, the rotary tiller group floats down, the slider on the lower sliding groove plate moves down, and the slider on the upper sliding groove plate moves backward. Since the position of the web plate and the frame does not change, the position of the cutting point of the rotary tiller group and the ground is changed, thereby ensuring the consistency of the cutting depth.

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

Claims

1. A no-till contour anti-clogging seeding unit characterized by, The utility model relates to a rotary cultivator, including: A frame (2); A power shaft (604) is horizontally arranged on the frame (2) and is rotationally connected with the frame (2); A plurality of transmission housings (6) are equidistantly sleeved on the power shaft (604) along the axial direction of the power shaft (604), and the transmission housings (6) are rotationally connected with the power shaft (604); A plurality of rotary cultivator groups (7) are provided, each of the rotary cultivator groups (7) comprising a plurality of rotary cultivators (701) equidistantly arranged on the periphery of a cutter shaft (707) and fixed on both ends of the cutter shaft (707), the cutter shaft (707) is arranged on one end of the transmission housing (6) away from the power shaft (604), the cutter shaft (707) is parallel to the power shaft (604) and rotationally connected with the transmission housing (6); A plurality of transmission mechanisms are arranged on the transmission housings (6) respectively, the input ends of the transmission mechanisms are connected with the power shaft (604), and the output ends of the transmission mechanisms are connected with the cutter shaft (707) to rotate the cutter shaft (707); A plurality of springs (4) are connected between each transmission housing (6) and the frame (2) respectively to rotate the transmission housing (6) towards the side close to the ground surface; An upper chute plate (401) is horizontally arranged above the power shaft (604) and perpendicular to the axis of the power shaft (604), a lower chute plate (407) is vertically arranged on one end of the upper chute plate (401) away from the rotary cultivator group (7) and fixedly connected with the frame (2), two web plates (403) are hingedly connected on both sides of the transmission housing (6) and parallel to the power shaft (604), the web plates (403) are arranged in a cross shape with the transmission housing (6), the two ends of the web plates (403) are slidingly connected with the upper chute plate (401) and the lower chute plate (407) respectively, and the springs (4) are arranged on the upper chute plate (401) and the lower chute plate (407) respectively and parallel to the upper chute plate (401) and the lower chute plate (407), one end of the spring (4) is connected with the upper chute plate (401) or the lower chute plate (407) and the other end is connected with the end of the web plate (403); Sliding blocks (402) are slidingly connected with the upper chute plate (401) and the lower chute plate (407) respectively, the sliding blocks (402) are hingedly connected with the end of the web plate (403), and one end of the spring (4) close to the rotary cultivator group (7) is connected with the sliding block (402); A plurality of furrowers (8) are fixedly arranged on one side of the frame (2) away from the towing vehicle, each of the furrowers (8) is arranged opposite to the transmission housing (6), and a roller (9) is rotationally connected with the frame (2) on the side of the furrower (8) away from the transmission housing (6), and the roller (9) is parallel to the axial direction of the power shaft (604).

2. The reduced-till contour anti-clogging seeding unit of claim 1, wherein, The slider (402) is provided with an end cover (402-4) at both ends of its sliding direction, the end cover (402-4) is provided with an oil scraping plate (402-3) away from the slider (402), the oil scraping plate (402-3) abuts against the inner wall of the upper slide groove plate (401) and the lower slide groove plate (407), one of the oil scraping plates (402-3) is provided with an oil nozzle (402-1), the nozzle (402-1) is communicated with the lubricating system through a pipeline.

3. The reduced-till contour anti-clogging seeding unit of claim 1, wherein, The upper slide groove plate (401) is vertically provided with two anti-blocking baffles (408) on both sides and parallel to each other, the anti-blocking baffles (408) are fixedly connected with the lower slide groove plate (407), and the power shaft (604) penetrates through the anti-blocking baffles (408) and is rotatably connected with the anti-blocking baffles (408).

4. The reduced tillage contour anti-clogging seeding unit of claim 1, wherein, Further comprising: A 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 fixedly connected with the rack (2), and the other two ends are fixedly connected with the upper slide groove plates (401).

5. The reduced-till contour anti-clogging seeding unit of claim 1, wherein, The transmission mechanism comprises a driving pulley (605), a driven pulley (601) and a synchronous belt (603), the driving pulley (605) is sleeved on the power shaft (604), the driven pulley (601) is sleeved on the cutter shaft (707), the driven pulley (601) and the driving pulley (605) are located in the transmission housing (6), and the synchronous belt (603) is sleeved on the driving pulley (605) and the driven pulley (601) and is engaged with the driving pulley (605) and the driven pulley (601).

6. The reduced-till contour anti-clogging seeding unit of claim 5, wherein, Further comprising: A tension pulley (602) is rotatably connected in the transmission housing (6) and parallel to the axis of the driving pulley (605), the tension pulley (602) is located between the driving pulley (605) and the driven pulley (601), and the inner side of the synchronous belt (603) is engaged with the tension pulley (602).

7. The reduced-tillage contour anti-clogging seeding unit of claim 1, wherein, Further comprising: A gearbox (3) and a universal shaft (5), the gearbox (3) is fixed on the rack (2), the power shaft (604) is coaxially fixedly connected with the output shaft of the gearbox (3), one end of the universal shaft (5) is connected with the input shaft of the gearbox (3), and the other end is connected with the power output part of the traction vehicle.

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