Composite rotary tillage seeder

Abstract

The invention provides a composite rotary tillage seeder, and relates to the technical field of seeding equipment, the composite rotary tillage seeder comprises a rotary tillage assembly, a ridging assembly and a press wheel which are sequentially mounted on a rack, a walking wheel is rotatably connected to one side of the press wheel on the rack, and a one-way bearing is mounted between the walking wheel and the press wheel; a central shaft of the press wheel is connected with an inner ring of the one-way bearing; a rotating shaft of the walking wheel is connected with an outer ring of the one-way bearing; a mud scraping wheel is rotationally connected to the position, above the press wheel, of the rack and is in transmission connection with the walking wheel, and a plurality of mud scraping plates are arranged in the circumferential direction of the mud scraping wheel at intervals. The mud scraping plate can scrape mud attached to the press wheel, the slipping phenomenon of the press wheel can be reduced, and when the press wheel slips due to the mud and the rotating speed of the press wheel is lower than the speed that the walking wheel drives the outer ring of the one-way bearing to rotate, the walking wheel can drive the press wheel to continue to rotate through the one-way bearing; and the influence of slipping of the press wheel on the pressing effect is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of seeding equipment, and particularly relates to a compound rotary tillage seeder. Background Art

[0002] A seeder is an agricultural mechanical device used to evenly sow seeds into the soil at a certain row spacing, plant spacing, and depth. Before sowing, operations such as rotary tillage and ridging of the soil are required to provide good conditions for sowing, crop growth, and field management. A combined seeder is a combined machine with a seeder as the main body and appropriately configured other working components or implements, which can complete multiple operations simultaneously at one time. It can reduce the number of times the machine set operates in the field, shorten the agronomic operation cycle, and reduce the number of times the machine set compacts the soil.

[0003] A compound rotary tillage seeder is an agricultural machine that combines the functions of rotary tillage and seeding, and can complete multiple operations such as rotary tillage, ridging, seeding, and rolling of the soil at one time. The compound rotary tillage seeder is usually towed by a tractor, and the power output shaft is used to drive the rotary tillage cutter shaft to rotate to complete the tillage and soil fragmentation operations of the soil. At the same time, the seeds are evenly sown into the soil through the seeding device at a preset depth and spacing, and the soil is compacted by the rolling wheel to make the seeds in close contact with the soil, promoting germination.

[0004] For example, the patent document with the publication number CN221829415U discloses a hanging type rotary tillage ridging seeding fertilizing integrated machine. The device includes a frame and a rotary tillage component, a ridging component, a seeding component, and a flattening component arranged on the frame. The frame is hung behind the carrier tool. When the carrier tool moves forward, the rotary tillage component is started at the same time, and the rotary tillage component starts to rotary till the soil. At the same time, the rotary tillage component drives the ridging component to ridge on both sides. The transmission component drives the seeding component to carry out seeding work. The ditching disc ditches the soil into which fertilizer has been swirled. After ditching, the seeds fall into the soil ditch along the ditching disc. Finally, the pressing wheel passes through the soil ditch to compact the seeds in the soil ditch.

[0005] Again, for example, the patent document with the publication number CN117616926B discloses a Pinellia ternata precision seeder. The seeder is connected to the tractor through a suspension rod connection. The output shaft on the tractor is connected to the coupling on the rotary tillage device. The tractor transmits power to the gearbox of the rotary tillage device through the coupling, and the rotary tillage cutter starts to rotate. The ridging plate ridges the rotary tilled soil. The ditching device opens equally spaced seed furrows on the ridged ridges. The seed metering device drops the seeds into the seed furrows. The rolling roller and the seeding soil covering plate carry out soil covering and rolling operations on the seeds to complete the entire rotary tillage ridging, fertilizing, and seeding operation process.

[0006] Both of the above-mentioned sowing equipments are ridged, sown and pressed after rotary tillage. The movement of the frame causes friction between the pressing wheel and the cultivated land, thereby driving the pressing wheel to rotate. The pressing wheel can press the soil and seeds during the rotation process, so that the soil and seeds are in close contact, which is conducive to the seeds absorbing moisture from the soil and increasing the germination rate of the seeds. However, the soil is relatively soft after rotary tillage and ridging, and the texture of the soil becomes relatively sticky after rotary tillage and ridging. If the soil water content is too high and too sticky, the friction between the pressing wheel and the soil will decrease, and slipping is likely to occur. In addition, some soils with fine texture and high viscosity are easy to adhere to the surface of the pressing wheel when being pressed, so that an uneven covering layer is formed between the wheel surface and the soil, causing slipping. Slipping will cause uneven distribution of pressure of the pressing wheel on the soil, some areas may be over-compacted, while some places are under-compacted, affecting the soil moisture retention effect and the growth environment of the crop root system. Summary of the invention

[0007] In view of this, the present invention provides a compound rotary tillage seeder to solve the technical problem in the prior art that after the soil is rotary tilled and ridged, the pressing wheel is prone to slipping, thereby affecting the pressing effect.

[0008] In order to solve the above technical problems, the present invention provides a composite rotary tillage seeder, comprising a rotary tillage assembly, a ridging assembly and a pressing wheel which are sequentially mounted on a frame, a travel wheel is rotatably connected to one side of the pressing wheel on the frame, the outer diameter of the travel wheel is larger than the outer diameter of the pressing wheel, a one-way bearing is mounted between the travel wheel and the pressing wheel, the central axis of the pressing wheel is connected to the inner ring of the one-way bearing, and the rotating shaft of the travel wheel is connected to the outer ring of the one-way bearing; A scraper wheel is rotatably connected to the frame above the pressure wheel. The scraper wheel is transmission-connected to the travel wheel. The axial direction of the scraper wheel is parallel to the axial direction of the pressure wheel. A plurality of scraper plates are arranged at intervals in the circumferential direction of the scraper wheel.

[0009] By adopting the above technical solution, the frame is driven by a tractor to move, thereby driving the rotary tillage component, the ridging component and the pressing wheel to move. The rotary tillage component performs rotary tillage on the cultivated land, and the soil can be chopped and stirred by rotary tillage, so that larger soil blocks are broken into smaller particles, and the soil becomes loose, which can break the soil compaction layer, increase the air permeability and water permeability of the soil, and is conducive to the growth and development of the root system of crops. At the same time, rotary tillage can cut off the roots of weeds, bury the weeds and crop residues in the soil, play the role of weeding and stubble removal, reduce the competition between weeds and crops for nutrients, water and sunlight, and also help reduce the breeding places and infection sources of pests and diseases.

[0010] After rotary tillage, the ridging component ridges the cultivated land. After ridging, ridges and furrows are formed. When there is more rainfall, the furrows can serve as drainage channels, allowing excess water to quickly drain out of the field, avoiding waterlogging damage to crop roots and reducing the impact of waterlogging on crop growth. After ridging, the surface area of the soil increases, and the contact area with air also increases accordingly. This is conducive to the exchange of oxygen and carbon dioxide in the soil. Crop roots require oxygen during respiration, and good air permeability can promote root growth and development, making the roots stronger and enhancing the crop's ability to absorb water and nutrients.

[0011] After ridging, the pressing wheel presses the ridges. After rotary tillage and ridging, there may be some large soil clods or lumps on the soil surface. Pressing can crush these clods, making the soil surface finer and smoother, creating good seedbed conditions for sowing, facilitating close contact between seeds and soil, and improving sowing quality and emergence rate. Pressing can appropriately compact the soil after ridging, reduce large pores in the soil, increase soil bulk density, which helps improve the soil's water and fertilizer retention capacity, making it less likely for water and nutrients in the soil to be lost and facilitating absorption and utilization by crop roots.

[0012] After the soil is rotary tilled and ridged, its texture becomes relatively sticky and soft. During the pressing process, when the pressing wheel contacts the soil, the wet soil easily adheres to the surface of the pressing wheel, making the pressing wheel prone to slipping. Since there is a one-way bearing connecting the pressing wheel and the walking wheel, and the outer diameter of the walking wheel is larger than that of the pressing wheel, when the pressing wheel and the walking wheel move forward the same distance synchronously, the rotational speed of the pressing wheel is greater than that of the walking wheel, causing the pressing wheel to rotate counterclockwise relative to the walking wheel. When the pressing wheel slips due to mud and its rotational speed is lower than the speed at which the outer ring of the one-way bearing is driven by the walking wheel, when the outer ring is subjected to a rotational torque, the rollers start to roll and generate a reaction force, pushing the inner ring to rotate accordingly, and then driving the pressing wheel to continue rotating counterclockwise, which helps reduce the impact of pressing wheel slippage on the pressing effect.

[0013] The walking wheel drives the mud scraping wheel to rotate. The mud scraping plate on the mud scraping wheel can scrape off the mud adhering to the pressing wheel, which helps reduce the instantaneous change in the friction between the pressing wheel and the soil caused by locally adhered mud, and thus helps reduce the phenomenon of pressing wheel slippage.

[0014] Preferably, two wheel spike groups are provided at the circumferential part of the pressing wheel near both ends. The wheel spike group is composed of multiple wheel spikes spaced apart, and the mud scraping wheel is located between the two wheel spike groups.

[0015] By adopting the above technical solution, when the pressing wheel rotates, the spikes on the wheel spikes will penetrate into the soil, increasing the friction between the pressing wheel and the soil, enabling the pressing wheel to more effectively transfer the pressure to the soil during the rolling process, thereby enhancing the pressing effect and facilitating the soil to be compacted more tightly. At the same time, due to the close combination of the spikes and the soil, the wheel spikes can provide additional grip for the pressing wheel, reducing the slippage of the pressing wheel during the rolling process, which is beneficial for the pressing wheel to operate according to the predetermined trajectory and pressure, improving the uniformity and consistency of pressing.

[0016] The mud scraping wheel is located between two wheel spike groups, which can timely remove the soil or debris adhering to the surface of the pressing wheel during the pressing process, facilitating the reduction of the slippage phenomenon of the pressing wheel. The spaced distribution of the wheel spike groups and the coordinated action of the mud scraping wheel enable the pressing wheel to maintain the profiling movement ability in the undulating terrain, which is beneficial for reducing the jumping or slippage phenomenon of the pressing wheel caused by the locally adhered soil, thereby facilitating the maintenance of a stable operation depth and speed.

[0017] Preferably, along the radial direction of the mud scraping wheel, the mud scraping plate is in a herringbone shape.

[0018] By adopting the above technical solution, the herringbone structure divides the mud scraping plate into two symmetrical inclined planes, forming a V-shaped diversion groove. When the pressing wheel rotates, the soil is quickly thrown out along the two inclined planes under the combined action of the centrifugal force and the inclined plane of the mud scraping plate, which is beneficial for reducing the accumulation of soil at the front edge of the mud scraping plate. The special shape of the herringbone mud scraping plate in the radial direction of the mud scraping wheel enables it to contact the soil on the surface of the pressing wheel more deeply during the mud scraping process. Compared with the mud scraping plate of ordinary shape, the herringbone design increases the contact area and angle with the surface of the pressing wheel, and can better remove the soil at different positions and depths on the surface of the pressing wheel, reducing soil residue.

[0019] Preferably, a profiling frame is installed on the frame. The profiling frame is a four-bar linkage mechanism, and the pressing wheel is installed on the profiling frame.

[0020] By adopting the above technical solution, the four-bar linkage structure forms a parallelogram motion trajectory through the hinge points, enabling the pressing wheel to float independently of the frame in the vertical direction. The profiling frame can adjust the height of the pressing wheel according to the undulation of the ground, which is beneficial for the pressing wheel to always maintain an appropriate contact pressure and pressing depth with the ground, reducing the phenomenon that some areas are pressed too deeply or too shallow due to the uneven ground, thereby improving the quality and uniformity of the pressing operation.

[0021] Preferably, a profiling spring is installed on the profiling frame. One end of the profiling frame is connected to one end of the profiling spring, and the other end of the profiling frame is provided with a plurality of connection slots, and the other end of the profiling spring is connected to the connection slots.

[0022] By adopting the above technical solution, the contour spring has a certain elastic coefficient. When the pressure wheel is subjected to ground reaction forces of different magnitudes, the spring will undergo corresponding expansion and contraction deformation. For example, when operating on softer soil, the pressure wheel is subjected to less resistance, and the spring will shrink appropriately, reducing the pressure of the pressure wheel on the soil; while on harder soil, the spring will stretch, increasing the pressure of the pressure wheel on the soil. This pressure regulation function enables the pressure wheel to operate at a suitable pressure under different soil conditions, thereby helping to improve the suppression effect. By selecting contour springs with different elastic coefficients, the range and sensitivity of pressure regulation can be further adjusted.

[0023] Preferably, a mounting frame is provided on one side of the profiling frame, the mounting frame is connected to the frame, and the other side of the profiling frame is connected to the mounting frame, and a furrow opener and a seed bin are provided on the mounting frame.

[0024] By adopting the above technical solution, the seed bin and the furrow opener are set on the profiling frame, so that the sowing equipment can complete the two steps of furrowing and sowing at one time. The furrow opener is responsible for opening suitable grooves in the soil to provide suitable planting space for seeds; the seed bin stores seeds and sows the seeds accurately into the opened grooves at the appropriate time. The profiling frame can automatically adjust the height of the furrow opener and the seed bin according to the ups and downs of the ground, so that the furrow opener opens the grooves at the appropriate depth and sows the seeds in the soil at the same depth, reducing the problem of inconsistent sowing depth due to uneven ground, which is conducive to improving the consistency of seed germination and growth.

[0025] Preferably, a seed meter is installed in the seed bin, and a transmission shaft of the seed meter is transmission-connected to a central shaft of a pressing wheel.

[0026] By adopting the above technical solution, the seeding speed of the seeding device can be matched with the traveling speed of the pressure wheel through the transmission connection. During the rolling process of the pressure wheel, the rotation of the central axis is transmitted to the transmission shaft of the seeding device, so that the seeding device discharges seeds according to a certain proportion, which is conducive to improving the uniformity of sowing and reducing the phenomenon of missed sowing or repeated sowing.

[0027] Preferably, the ridging assembly includes a ridging roller and ridging disks installed at both ends of the ridging roller, and the ridging disks are in the shape of a frustum.

[0028] By adopting the above technical solution, the outer contour of the frustum-shaped ridging disk is gradually contracted. During the operation, its outer edge first contacts the soil and begins to gather the soil. As the seeder moves forward, the soil is guided by the frustum-shaped structure and continuously converges to the middle, and finally forms a ridge under the further action of the ridging roller. During the ridging process, the ridging disk turns and stirs the soil, making the soil loose, which is conducive to the growth and development of the crop root system and improves the air permeability and water permeability of the soil.

[0029] Preferably, two profiling frames are provided on one side of the ridging roller and at a position between two ridging discs, and the walking wheels are located at the connecting part of the ridging disc and the ridging roller.

[0030] By adopting the above technical solution, the walking wheels are located at the connecting part of the ridging disc and the ridging roller, that is, in the furrow. The furrow provides a relatively flat and stable supporting surface for the walking wheels. Compared with walking on the ridge surface, the shape of the furrow is relatively regular, and the rolling resistance of the walking wheels is more uniform, which can reduce the vibration caused by the hard soil layer or crop residues on the ridge, enabling the walking wheels to better contact the ground, helping to improve the stability of the movement of the walking wheels, and further helping the pressing wheel to perform stable pressing.

[0031] Preferably, the rotary tillage assembly includes a rotary tillage roller and rotary tillage blades mounted on the rotary tillage roller.

[0032] By adopting the above technical solution, the rotary tillage roller provides support for the rotary tillage blades. While the rotary tillage blades break the soil, they can also turn over and bury the sundries on the ground surface into the soil. During the rotary tillage process, the rotary tillage blades lift and turn over the soil and sundries together, burying the sundries into the lower layer of the soil. This not only helps to remove the sundries in the field and reduce the breeding of pests and diseases, but also decomposes the organic matter in the sundries into the soil, increasing the soil fertility.

[0033] The beneficial effects of the above technical solutions of the present invention are as follows: 1. In the present invention, a mud scraping wheel is provided above the pressing wheel, and mud scraping plates are provided on the mud scraping wheel. The mud scraping plates can scrape off the mud adhering to the pressing wheel, which is beneficial to reducing the instantaneous change in the friction force between the pressing wheel and the soil caused by the locally adhered mud, and further beneficial to reducing the phenomenon of the pressing wheel slipping; a one-way bearing is connected between the pressing wheel and the walking wheel. When the pressing wheel slips due to mud and its rotation speed is lower than the speed at which the walking wheel drives the outer ring of the one-way bearing to rotate, the walking wheel can drive the pressing wheel to continue rotating counterclockwise through the one-way bearing, which is beneficial to reducing the influence of the pressing wheel slipping on the pressing effect.

[0034] 2. The mud scraping plates of the present invention are designed in a herringbone shape. Compared with the mud scraping plates of ordinary shapes, the herringbone design increases the contact area and angle with the surface of the pressing wheel, and can better remove the mud at different positions and depths on the surface of the pressing wheel, reducing mud residue.

[0035] 3. The roller spikes on the pressing wheel can increase the friction force between the pressing wheel and the soil, which is beneficial to compacting the soil more tightly; at the same time, the spikes can provide additional grip for the pressing wheel, reducing the sliding of the pressing wheel during the rolling process, which is beneficial to improving the uniformity and consistency of the pressing of the pressing wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of the compound rotary tillage seeder of the present invention; Figure 2 Side view of the compound rotary tillage seeder of the present invention; Figure 3 Schematic structural diagram of the profiling frame and mounting frame of the present invention; Figure 4 Cross-sectional view of the pressing wheel and traveling wheel of the present invention; Figure 5 is Figure 4 Enlarged view of part A in Figure 6 Side view of the profiling frame and mounting frame of the present invention; Figure 7 is Figure 6 Enlarged view of part B in

[0037] In the figure: 1, frame; 11, profiling frame; 111, first side link; 112, upper link; 113, second side link; 114, lower link; 115, profiling spring; 116, connection groove; 12, fixed frame; 13, mounting frame; 131, gearbox; 14, pressing wheel; 141, wheel spikes; 142, central shaft; 15, furrow opener; 16, seed bin; 161, seed metering device; 17, traveling wheel; 171, rotating shaft; 18, one-way bearing; 19, mud scraping wheel; 191, mud scraping plate; 2, rotary tillage assembly; 21, rotary tillage roller; 22, rotary tillage blade; 3, ridging assembly; 31, ridging roller; 32, ridging disc; 4, ridge; 41, furrow; 42, ridge crest; 5, gearbox. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the Figures 1-7 of the embodiments of the present invention.

[0039] Embodiment This embodiment provides a compound rotary tillage seeder, as Figure 1 shown, which includes a frame 1, a rotary tillage assembly 2 and a ridging assembly 3.

[0040] As Figure 1 shown, the frame 1 is towed by a tractor and provides support for the rotary tillage assembly 2 and the ridging assembly 3.

[0041] As Figure 2 shown, the rotary tillage assembly 2 includes a rotary tillage roller 21 rotatably mounted on the frame 1 and rotary tillage blades 22 mounted on the rotary tillage roller 21. The axial direction of the rotary tillage roller 21 is perpendicular to the traveling direction of the frame 1.

[0042] As Figure 2As shown, the rotary tillage roller 21 provides support for the rotary tillage blade 22. The rotary tillage blade 22 can not only break the soil, but also bury the debris on the surface into the soil. During the rotary tillage process, the rotary tillage blade 22 lifts and turns the soil and debris together, so that the debris is buried in the lower layer of the soil. This is not only conducive to clearing the debris in the field and reducing the breeding of pests and diseases, but also can decompose the organic matter in the debris into the soil, increasing the fertility of the soil.

[0043] like Figure 1 As shown, the ridging assembly 3 includes a ridging roller 31 rotatably mounted on the frame 1 and ridging discs 32 mounted at both ends of the ridging roller 31, and the ridging discs 32 are frustum-shaped. In this embodiment, two ridging rollers 31 are provided, and four ridging discs 32 are provided, and the axial direction of the ridging roller 31 is parallel to the axial direction of the rotary tillage roller 21.

[0044] like Figure 1 As shown, a gearbox 5 is provided on the frame 1 above the rotary tillage roller 21. The tractor transmits power to the gearbox 5, and the gearbox 5 transmits torque to the rotary tillage roller 21 and the ridging roller 31. The gearbox 5 and the rotary tillage roller 21 are connected via a gear set transmission, and the gearbox 5 and the ridging roller 31 are connected via a chain transmission.

[0045] like Figure 1 As shown, after rotary tillage, the ridging assembly 3 ridges the cultivated land, and after ridging, a ridge 41 and a ridge back 42 are formed. The outer contour of the frustum-shaped ridging disc 32 is in a gradually shrinking shape. During the operation, its outer edge first contacts the soil and begins to gather the soil. As the seeder moves forward, the soil is guided by the frustum-shaped structure and continuously converges to the middle, and finally forms a ridge 4 under the further action of the ridging roller 31.

[0046] like Figure 1 As shown, when there is heavy rainfall, the ridge 41 can be used as a drainage channel to quickly drain excess water from the field, avoid waterlogging from damaging the crop root system, and reduce the impact of waterlogging on crop growth. After ridge formation, the area of ​​the soil surface increases, and the contact area with the air also increases, which is conducive to the exchange of oxygen and carbon dioxide in the soil. The root system of crops needs oxygen during respiration. Good ventilation can promote the growth and development of the root system, make the root system stronger, and enhance the ability of crops to absorb water and nutrients.

[0047] like Figure 2 As shown, a profiling frame 11 is installed on the frame 1, and the profiling frame 11 is a closed four-bar linkage mechanism.

[0048] Specifically, Figure 6 and Figure 7As shown, the profiling frame 11 includes a side link 111, an upper link 112, a side link 113 and a lower link 114 which are hinged in sequence. The side link 111 is opposite to the side link 113, and the upper link 112 is opposite to the lower link 114. The side link 113 is located near the frame 1, and the side link 113 is connected to a fixing frame 12, which is connected to the frame 1 so that the frame 1 drives the profiling frame 11 to move forward.

[0049] like Figure 3 and Figure 7 As shown, a mounting frame 13 is connected to the side link 111, a seed bin 16 is connected to the top of the mounting frame 13, and a pressing wheel 14 and a furrow opener 15 are rotatably connected to the bottom of the mounting frame 13, and the furrow opener 15 is a double-disc furrow opener 15. The four-link structure forms a parallelogram motion track through the hinge point, so that the pressing wheel 14 and the furrow opener 15 float independently of the frame 1 in the vertical direction.

[0050] like Figure 2 and Figure 3 As shown, the seed bin 16 and the furrow opener 15 are arranged on the contour frame 11, so that the seeder can complete the two steps of furrowing and sowing at one time. The furrow opener 15 is responsible for opening a suitable furrow in the soil to provide a suitable planting space for seeds; the seed bin 16 stores seeds and sows the seeds accurately into the opened furrows at the appropriate time.

[0051] like Figure 2 and Figure 3 As shown, the contour frame 11 can automatically adjust the height of the pressing wheel 14, the furrow opener 15 and the seed bin 16 according to the undulations of the ground, so that the furrow opener 15 can open a furrow at a suitable depth and sow the seeds in the soil at the same depth, thereby reducing the problem of inconsistent sowing depths due to uneven ground, which is beneficial to improving the consistency of seed germination and growth; it is also beneficial for the pressing wheel 14 to always maintain a suitable contact pressure and pressing depth with the ground, reducing the phenomenon of excessively deep or shallow pressing in some areas due to uneven ground, thereby improving the quality and uniformity of the pressing operation.

[0052] like Figure 3 and Figure 6 As shown, a seed metering device 161 is installed in the seed bin 16, and a gearbox 131 is provided on the mounting frame 13 above the pressing wheel 14. The central shaft 142 of the pressing wheel 14 is connected to the input shaft of the gearbox 131 through a chain, and the power is introduced into the gearbox 131. The gearbox 131 needs to adjust the output speed and torque according to the working requirements of the pressing wheel 14 and the seed metering device 161. The power output by the gearbox 131 drives the seed metering device 161 through a chain drive.

[0053] like Figure 3 and Figure 6As shown, the pressing wheel 14 transmits power to the seed meter 161 during the rolling process, so that the seed meter 161 discharges seeds according to a certain ratio, which is beneficial to improve the uniformity of sowing and reduce the phenomenon of missed sowing or repeated sowing.

[0054] like Figure 6 and Figure 7 As shown, a profiling spring 115 is installed on the profiling frame 11, the lower connecting rod 114 is connected to one end of the profiling spring 115, and the upper connecting rod 112 is provided with a plurality of connecting grooves 116, and the other end of the profiling spring 115 is connected to the connecting groove 116.

[0055] like Figure 6 and Figure 7 As shown, the contour spring 115 has a certain elastic coefficient. When the pressing wheel 14 is subjected to ground reaction forces of different magnitudes, the spring will be correspondingly stretched and deformed. For example, when operating on softer soil, the pressing wheel 14 is subjected to less resistance, and the spring will appropriately contract, reducing the pressure of the pressing wheel 14 on the soil; while on harder soil, the spring will stretch, increasing the pressure of the pressing wheel 14 on the soil. This pressure adjustment function enables the pressing wheel 14 to operate at a suitable pressure under different soil conditions, thereby helping to improve the suppression effect. By selecting contour springs 115 with different elastic coefficients, the range and sensitivity of pressure adjustment can be further adjusted.

[0056] like Figure 1 and Figure 3 As shown, in this embodiment, four profiling frames 11 are provided, as well as four pressing wheels 14, four furrow openers 15 and four seed bins 16. Two profiling frames 11 are provided on one side of each ridging roller 31 and between two ridging discs 32, that is, two rows of seeds are sown on each ridge back 42.

[0057] like Figure 1 and Figure 3 As shown, a travel wheel 17 is rotatably connected to one side of the pressing wheel 14 on the frame 1, and the outer diameter of the travel wheel 17 is larger than the outer diameter of the pressing wheel 14. The axial direction of the travel wheel 17 and the axial direction of the pressing wheel 14 are both parallel to the axial direction of the ridging roller 31. In this embodiment, four travel wheels 17 are arranged, that is, one pressing wheel 14 corresponds to one travel wheel 17.

[0058] like Figure 4 and Figure 5 As shown, a one-way bearing 18 is installed between the travel wheel 17 and the pressure wheel 14 , the central axis 142 of the pressure wheel 14 is connected to the inner ring of the one-way bearing 18 , and the rotating shaft 171 of the travel wheel 17 is connected to the outer ring of the one-way bearing 18 .

[0059] like Figure 4 and Figure 5As shown, when the tractor towing frame 1 moves forward, the pressing wheel 14 and the traveling wheel 17 both rotate counterclockwise. The rotational speed of the pressing wheel 14 is greater than that of the traveling wheel 17, causing the pressing wheel 14 to rotate counterclockwise relative to the traveling wheel 17. When the pressing wheel 14 slips due to the soil and its rotational speed is lower than the speed at which the outer ring of the one-way bearing 18 is rotated by the traveling wheel 17, when the outer ring is subjected to a rotational torque, the rollers start to roll and generate a reaction force, pushing the inner ring to rotate accordingly, and then driving the pressing wheel 14 to continue rotating counterclockwise, which helps to reduce the influence of the slip of the pressing wheel 14 on the pressing effect.

[0060] As Figure 1 and Figure 3 shown, two pressing wheels 14 and two traveling wheels 17 are provided on each ridge back 42. The two pressing wheels 14 are located between the two traveling wheels 17, and the traveling wheels 17 are located at the connecting part of the ridging disc 32 and the ridging roller 31, that is, the ridge groove 41. The ridge groove 41 provides a relatively flat and stable support surface for the traveling wheels 17. Compared with walking on the ground of the ridge back 42, the shape of the ridge groove 41 is relatively regular, and the traveling wheels 17 can better contact the ground, which helps the stability of the movement of the traveling wheels 17, and thus helps the pressing wheel 14 to perform stable pressing.

[0061] As Figure 1 and Figure 3 shown, a mud scraping wheel 19 is rotatably connected above the pressing wheel 14 on the mounting frame 13. The mud scraping wheel 19 is connected to the traveling wheel 17 by a chain drive. The axial direction of the mud scraping wheel 19 is parallel to the axial direction of the pressing wheel 14. A plurality of mud scraping plates 191 are circumferentially spaced on the mud scraping wheel 19. Along the radial direction of the mud scraping wheel 19, the mud scraping plates 191 are in a herringbone shape.

[0062] As Figure 1 and Figure 3 shown, the traveling wheel 17 drives the mud scraping wheel 19 to rotate. The mud scraping plates 191 on the mud scraping wheel 19 can scrape off the soil adhered to the pressing wheel 14, which helps to reduce the instantaneous change of the friction force between the pressing wheel 14 and the soil caused by the locally adhered soil, and thus helps to reduce the phenomenon of the pressing wheel 14 slipping.

[0063] As Figure 1 and Figure 3 shown, the mud scraping plates 191 are designed in a herringbone structure, dividing the mud scraping plates 191 into two symmetrical inclined planes, forming a V-shaped diversion groove. When the pressing wheel 14 rotates, the soil is under the combined action of the centrifugal force and the inclined planes of the mud scraping plates 191, which helps the soil to be quickly thrown out along both inclined planes, thus reducing the accumulation at the front edge of the mud scraping plates 191. Compared with the mud scraping plates 191 of ordinary shapes, the herringbone mud scraping plates 191 increase the contact area and angle with the surface of the pressing wheel 14, and can better remove the soil at different positions and depths on the surface of the pressing wheel 14, reducing soil residue.

[0064] As shown Figure 3 in FIG. 1, two sets of wheel spikes are provided at the circumferential positions near both ends of the pressing wheel 14. The wheel spike sets are composed of multiple wheel spikes 141 spaced apart, that is, multiple wheel spikes 141 are evenly distributed on the circumferential side of the pressing wheel 14, and the mud scraping wheel 19 is located between the two sets of wheel spikes.

[0065] As shown Figure 3 in FIG. 2, when the pressing wheel 14 rotates, the spikes on the wheel spikes 141 will penetrate into the soil, increasing the friction between the pressing wheel 14 and the soil, enabling the pressing wheel 14 to more effectively transfer the pressure to the soil during the rolling process, thereby enhancing the pressing effect and facilitating the soil to be compacted more tightly. At the same time, due to the close combination of the spikes and the soil, the wheel spikes 141 can provide additional grip for the pressing wheel 14, reducing the slippage of the pressing wheel 14 during the rolling process, which is beneficial for the pressing wheel 14 to operate according to the predetermined trajectory and pressure, improving the uniformity and consistency of pressing.

[0066] The spaced distribution of the wheel spike sets and the synergistic effect of the mud scraping wheel 19 enable the pressing wheel 14 to maintain the contour-following movement ability in undulating terrain, which is beneficial for reducing the jumping or slipping phenomenon of the pressing wheel 14 caused by locally adhered soil.

[0067] The implementation principle of a compound rotary tillage seeder in this embodiment: The tractor pulls the frame 1 forward, the rotary tillage roller 21 drives the rotary tillage knives 22 to rotate, tilling the soil, and the ridging disks 32 and ridging rollers 31 ridge the soil to form furrows 41 and ridge backs 42.

[0068] The frame 1 drives the profiling frame 11 to move synchronously. The furrow opener 15 opens a groove, the seeds in the seed bin 16 fall into the groove, and the pressing wheel 14 performs pressing, completing furrow opening, seeding, and pressing.

[0069] The traveling wheels 17 travel within the ridge backs 42. When the pressing wheel 14 slips due to soil, and its rotational speed is lower than the speed at which the outer ring of the one-way bearing 18 is driven to rotate by the traveling wheels 17, when the outer ring is subjected to a rotational torque, the rollers start to roll and generate a reaction force, pushing the inner ring to rotate accordingly, thereby driving the pressing wheel 14 to continue rotating counterclockwise, which is beneficial for reducing the influence of the slippage of the pressing wheel 14 on the pressing effect.

[0070] The traveling wheels 17 drive the mud scraping wheel 19 to rotate. The mud scraping plates 191 on the mud scraping wheel 19 can scrape off the soil adhered to the pressing wheel 14, which is beneficial for reducing the instantaneous change in the friction between the pressing wheel 14 and the soil caused by locally adhered soil, and further beneficial for reducing the slippage phenomenon of the pressing wheel 14. The wheel spikes 141 can provide additional grip for the pressing wheel 14, which is beneficial for reducing the slippage of the pressing wheel 14 during the rolling process.

[0071] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components.

Claims

1. A compound rotary tillage seeder, comprising a rotary tillage component (2), a ridging component (3) and a press wheel (14) which are sequentially installed on a frame (1), and characterized in that: A traveling wheel (17) is rotatably connected to one side of the pressing wheel (14) on the frame (1). The outer diameter of the traveling wheel (17) is larger than that of the pressing wheel (14). A one-way bearing (18) is installed between the traveling wheel (17) and the pressing wheel (14). The central shaft (142) of the pressing wheel (14) is connected to the inner ring of the one-way bearing (18), and the rotating shaft (171) of the traveling wheel (17) is connected to the outer ring of the one-way bearing (18). A mud scraping wheel (19) is rotatably connected above the pressing wheel (14) on the frame (1). The mud scraping wheel (19) is drivingly connected to the traveling wheel (17). The axial direction of the mud scraping wheel (19) is parallel to the axial direction of the pressing wheel (14). A plurality of mud scraping plates (191) are circumferentially arranged on the mud scraping wheel (19) at intervals.

2. The compound rotary tillage seeder according to claim 1, wherein: Two wheel spike groups are arranged at the circumferential parts of the pressing wheel (14) near both ends. Each wheel spike group is composed of a plurality of wheel spikes (141) arranged at intervals. The mud scraping wheel (19) is located between the two wheel spike groups.

3. The compound rotary tillage seeder according to claim 2, characterized in that: Along the radial direction of the mud scraping wheel (19), the mud scraping plates (191) are in a herringbone shape.

4. The compound rotary tillage seeder according to claim 3, characterized in that: A profiling frame (11) is installed on the frame (1). The profiling frame (11) is a four-bar mechanism, and the pressing wheel (14) is installed on the profiling frame (11).

5. The compound rotary tillage seeder according to claim 4, characterized in that: A profiling spring (115) is installed on the profiling frame (11). One end of the profiling frame (11) is connected to one end of the profiling spring (115). A plurality of connecting grooves (116) are arranged at the other end of the profiling frame (11), and the other end of the profiling spring (115) is connected to the connecting grooves (116).

6. The compound rotary tillage seeder according to claim 5, characterized in that: An installation frame (13) is arranged on one side of the profiling frame (11). The installation frame (13) is connected to the frame (1). The other side of the profiling frame (11) is connected to an installation frame (13). A ridging opener (15) and a seed bin (16) are arranged on the installation frame (13).

7. The compound rotary tillage seeder according to claim 6, wherein: A seed metering device (161) is installed in the seed bin (16). The transmission shaft of the seed metering device (161) is drivingly connected to the central shaft (142) of the pressing wheel (14).

8. The compound rotary tillage seeder according to claim 7, wherein: The ridging assembly (3) includes a ridging roller (31) and ridging discs (32) installed at both ends of the ridging roller (31). The ridging discs (32) are frustum-shaped.

9. The compound rotary tillage seeder according to claim 8, characterized in that: Two profiling frames (11) are arranged at a position on one side of the ridging roller (31) and between the two ridging discs (32). The traveling wheel (17) is located at the part where the ridging disc (32) is connected to the ridging roller (31).

10. The compound rotary tillage seeder according to claim 9, characterized in that: The rotary tillage assembly (2) includes a rotary tillage roller (21) and rotary tillage blades (22) installed on the rotary tillage roller (21).

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