Narrow-gap furrowing seeder and furrow opener for same
By using narrow-slot seeding technology and improving the design of the furrow opener and cover, the problem of uneven seeding in heavy clay soils and fields with multiple straw plots has been solved, achieving efficient and low-cost seeding results and improving seeding quality and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-03-27
AI Technical Summary
Existing seeders struggle to guarantee sowing quality in heavy clay soils, areas with unsuitable moisture levels, or fields with many clods or straw. They are prone to soil adhesion, blockage, and entanglement, leading to uneven sowing and missed sowing, which increases operational difficulty and costs.
By employing narrow-slot sowing technology and through the improved design of the furrow opener and coverer, sowing furrows with a width that can only accommodate a single seed are opened. Combined with the cooperation of the rotary tiller frame and hydraulic cylinder, narrow-slot sowing is achieved. The special structure of the furrow opener ring and coverer ring overcomes soil resistance and ensures uniform seed distribution.
It improves the sowing rate and land utilization rate, reduces row spacing, increases yield per acre, reduces soil covering, promotes early seed emergence, adapts to various soil conditions, and reduces operating costs.
Smart Images
Figure CN224037874U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to agricultural machinery technical field, concretely is a narrow slit furrow opener and be used for the furrow opener of this seeding machine. BACKGROUND
[0002] At present, the seeding machine can realize better seeding quality in the soil condition suitable and the good tillage. However, in the soil heavy, the soil condition is too wet or too bad, the lumpy soil is much, the straw is much, the existing seeding machine often is difficult to guarantee the seeding quality, in the soil of larger viscosity, the furrow opener of existing seeding machine is easy to stick mud, leads to the furrow that does not flow, influences the uniform distribution and depth control of seed, and in the case that the soil moisture is too much or too little, the covering effect of existing seeding machine is poor, and the overwet soil will lead to seed rot, and the over dry soil is not conducive to seed water absorption and germination.Secondly, in the land containing a large amount of soil block (lumpy soil), the furrow opener and the soil cover of existing seeding machine are easy to be blocked, leading to uneven seeding, and even the phenomenon of missing seeding occurs, and in the land of straw returning to field, the furrow opener and the soil cover of existing seeding machine are easy to be wound by straw, affecting the seeding quality and efficiency.
[0003] Agricultural proverb says: "wheat does not fear grass, just fear lumpy soil bites". The lack of seedling and broken ridge phenomenon caused by poor seeding quality is very common in straw returning to field land. After deep ploughing and land preparation, the existing seeding machine can also realize better seeding quality, but the annual deep ploughing increases the planting cost. It is found through research that the problems of existing seeding machine mainly lie in the furrowing way and the soil covering way. The furrow opener of existing seeding machine usually adopts wide furrow furrowing way, which is easy to have problems under the above unfavorable conditions. In addition, the soil cover of existing seeding machine usually adopts full soil covering way, which is unnecessary in some cases, and increases the operation difficulty and cost.
[0004] It is found in production that the crop seeds fall in narrow soil gap, and even without soil covering, it will sprout under suitable soil condition. This discovery breaks the inherent cognition that the crop must be covered after seeding. We call this phenomenon as narrow slit seeding phenomenon. Inspired by the narrow slit seeding phenomenon, we research and propose a new seeding technology-narrow slit seeding technology and improve the furrow opener and the soil cover of existing seeding machine. UTILITY MODEL CONTENT
[0005] The utility model aims at the above problems and provides a narrow slit furrow opener with high applicability and high seeding rate and the furrow opener for the seeding machine.
[0006] The utility model discloses a furrow opener which comprises a furrow cylinder, a plurality of furrow ring cutters arranged on the arc-shaped side wall of the furrow cylinder, and the outer end of the body of the furrow ring cutter is sharp, and the body is narrow at the outer end and wide at the inner end.
[0007] The structure can extrude a V-shaped groove on the soil during operation, and the outer end of the furrow ring cutter is sharp, so that the furrow ring cutter can better overcome the resistance of soil such as clods and straws, and a high-quality seeding groove can be formed to meet the requirements of narrow-row seeding technology, so that the covering work can be completed with little soil.
[0008] Preferably, the furrow cylinder comprises two furrow cutter discs arranged at intervals and a furrow cutter shaft connected to the middle part of the two furrow cutter discs, and a furrow cutter shoulder is connected between the two furrow cutter discs and has a tubular structure with a cross section adapted to the furrow cutter disc. The furrow cutter shoulder and the furrow cutter shaft can be connected as a whole and rotate coaxially through the furrow cutter disc, and the tubular structure of the furrow cutter shoulder can control the furrowing depth.
[0009] Preferably, the furrow ring cutter comprises a furrow cutter seat, a furrow cutter body, and a fixing bolt for fixing the furrow cutter body on the furrow cutter seat, the furrow cutter seat is composed of two blocking rings with a cross section in the shape of a right-angled triangle, the right-angled side walls of the two blocking rings are arranged on the outer wall of the furrow cylinder at intervals, the furrow cutter body is arranged between the two blocking rings, and the fixing bolt passes through the lower part of the two blocking rings and the furrow cutter body. The furrow cutter seat on both sides of the furrow cutter body is designed to have a cross section in the shape of a right-angled triangle, so that a V-shaped groove can be extruded on the soil during operation, and the seeds falling into the groove can be concentrated in the narrow-row seeding groove, and the furrow ring cutter can be fixed on the furrow cutter seat through the fixing bolt, so that the furrow ring cutter can be conveniently disassembled or replaced.
[0010] Preferably, the furrow cutter body is in the shape of a circular ring, a semi-circular ring, or a quarter circular ring, and the height of the cutter body is higher than that of the seat, and the outer end of the furrow cutter body is sharp and has a tapered cross section. The ring cutter with different shapes can be installed according to different working requirements, and the cutter body with a sharp outer end can cut the straws and clods in the soil to form a narrow-seam-shaped seeding groove.
[0011] The utility model provides a narrow slit ditching seeder, which comprises a ditching device and a soil covering device, wherein the soil covering device comprises a soil covering cylinder, a plurality of soil covering knives are arranged on the arc-shaped side wall of the soil covering cylinder, the soil covering knives have a structure with a narrow outer end and a wide inner end, the cross section of the soil covering knives is in the shape of Y, a power output shaft is arranged on a traction swivel support, a rotary tillage frame is hingedly connected to the rear side of the traction swivel support, a hydraulic cylinder is hingedly connected to the rotary tillage frame, a seed box is arranged on the rotary tillage frame, the bottom of the seed box is provided with a plurality of seed tubes, the ditching device is arranged on the front side of the seed tubes, a soil covering mechanism matched with the seed tubes is arranged on the rear side of the seed tubes, and the soil covering device is part of the soil covering mechanism.
[0012] The above structure can be matched with the ditching device to realize narrow slit soil covering, the seeds are pressed to the bottom of the ditch by the soil covering knives, and thus the problem that some seeds may be hindered by straw and clods and cannot fall to the bottom of the ditch and hang in the middle of the seeding ditch, resulting in seed loss and affecting seedling emergence rate, is solved, the rotary tillage frame is hingedly connected to the traction swivel support and matched with the hydraulic cylinder, so that the vehicle can conveniently carry the seeding equipment and move, and the equipment can be conveniently maintained and replaced, and the ditching and soil covering processes are more coordinated and efficient due to the ditching device and the soil covering mechanism arranged on the front and rear sides of the seed tubes.
[0013] Preferably, the height of the soil covering knives of the soil covering device is less than the height of the ditching knives of the ditching device, and the thickness of the outer end of the soil covering knives of the soil covering device is greater than the thickness of the outer end of the ditching knives of the ditching device. The soil covering knives of the soil covering device are thicker than the ditching knives of the ditching device, so that the soil on the two side walls of the seeding ditch can be scraped and covered while the seeds are pressed to the bottom of the ditch.
[0014] Preferably, a mounting rack for mounting the ditching device is arranged on the front side of the seed tubes at the lower part of the rotary tillage frame, the mounting rack comprises two fixed beams arranged at intervals at the lower part of the rotary tillage frame, and the ditching device is rotatably connected between the two fixed beams.
[0015] An articulated knife arm is obliquely arranged at the front end of the rotary tillage frame, one end of the articulated knife arm is hingedly connected to the traction swivel support, and the other end is connected to the lower part of the rotary tillage frame, the articulated knife arm is fixedly connected to the front end of the rotary tillage frame at the middle part, the upper part of the articulated knife arm is obliquely arranged upward, a first hinge joint is arranged on the upper end of the articulated knife arm, the axis of the power output shaft is the same as the first hinge joint, the power output shaft passes through the first hinge joint, and the first hinge joint is hingedly connected to the traction swivel support, the lower part of the articulated knife arm is obliquely arranged downward, and a second hinge joint is arranged on the lower end of the articulated knife arm, the axis of the second hinge joint is the same as the axis of the ditching knife shaft of the ditching device. The articulated knife arm is hingedly connected to the traction swivel support and coaxially rotates with the power output shaft, so that the lifting of the rotary tillage frame can be effectively controlled, and the transmission mechanism between the power output shaft and the plurality of ditching devices can be prevented from being covered by sundries.
[0016] Preferably, a sprocket is arranged on the power output shaft body outside the first hinge interface and on the furrow opener shaft body outside the second hinge interface, respectively, and a chain connecting the two sprockets is arranged on the sprockets, and the arrangement direction of the chain is consistent with the length direction of the articulated cutter arm. The arrangement of the sprocket and the chain can drive multiple furrowers to work simultaneously through the power output shaft.
[0017] Preferably, the covering mechanism comprises two hinge frames hingedly connected to the rear side of the seeding pipe, and the two hinge frames are arranged in a spaced manner along the left-right direction of the rotary tillage frame and swing along the front-rear direction of the rotary tillage frame, and the cover roller is rotatably connected between the two hinge frames, and a reset mechanism hingedly connected to the rear part of the rotary tillage frame is arranged on the cover cutter shaft of the cover roller.
[0018] In summary, the utility model have advantages that: the utility model has strong applicability, through the cooperation of the furrower and the cover roller, a seeding furrow that can only accommodate a single seed is opened, and the seed is sown in the seeding furrow that can only accommodate a single seed to grow, so that the requirements of narrow slit seeding technology are realized, through the hinge connection of the rotary tillage frame to the traction swivel support and the cooperation with the hydraulic cylinder, the vehicle can conveniently carry the seeding equipment to move and the maintenance and replacement of the equipment are facilitated, through the furrower and the covering mechanism arranged on the front and rear sides of the seeding pipe, the furrowing and covering processes are more coordinated and efficient, the cover ring cutter of the cover roller is thicker than the furrowing ring cutter of the furrower, so that the soil on the two side walls of the seeding furrow can be scraped and covered while the seed is pressed to the bottom of the furrow, the row spacing is reduced by using the narrow slit seeding mode, the land utilization rate is greatly improved, and the yield per mu is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a structure schematic view of the utility model as a whole;
[0020] Figure 2 It is a structure schematic view of the rotary tillage frame when the hydraulic cylinder is retracted;
[0021] Figure 3 It is a structure schematic view of the cover roller;
[0022] Figure 4 It is a structure schematic view of the furrower;
[0023] Figure 5 It is a principle structure schematic view of the utility model;
[0024] Figure 6 It is Figure 4 It is a structure schematic view of a part of the cross section of the furrowing ring cutter at B;
[0025] Figure 7 It isFigure 3 Structure diagram of partial section of the cover ring knife at A.
[0026] In the figure: 1, traction rotary support; 2, power output shaft; 3, rotary tillage frame; 4, hydraulic cylinder; 5, seeding box; 6, seeding tube; 8, furrow opener; 9, covering mechanism; 10, covering ring knife; 11, mounting frame; 12, furrow knife shaft; 13, articulated knife arm; 14, first articulation; 16, second articulation; 17, sprocket; 18, chain; 19, furrow barrel; 21, furrow ring knife; 22, articulated frame; 23, covering barrel; 24, reset mechanism; 25, furrow knife disc; 26, furrow knife shoulder; 27, furrow knife seat; 28, furrow knife body; 29, covering knife disc; 30, covering knife shaft; 31, covering knife shoulder; 32, covering knife seat; 33, covering knife body. DETAILED DESCRIPTION
[0027] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.
[0028] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] The following is a description of the preferred embodiments of the present application in conjunction with the accompanying drawings.
[0031] As Figure 4 and Figure 6As shown, a furrower comprises a furrow cylinder 19, a group or a plurality of furrow ring knives 21 are arranged on the arc-shaped side wall of the furrow cylinder 19, the outer end of the body of the furrow ring knife 21 is sharpened and the body is narrow at the outer end and wide at the inner end, wherein the cross section of the body of the furrow ring knife 21 is in the shape of "Y", when designed, the furrow cylinder 19 comprises two spaced furrow cutter heads 25 and a furrow cutter shaft 12 connected in the middle of the two furrow cutter heads 25, a furrow cutter shoulder 26 is connected between the two furrow cutter heads 25 and the furrow cutter shoulder 26 is in the shape of a pipe with a cross section adapted to the furrow cutter head 25, the furrow cutter shoulder 26 and the furrow cutter shaft 12 can be connected as a whole and rotate coaxially through the furrow cutter head 25, and the furrow cutter shoulder 26 in the shape of a pipe can control the furrowing depth.
[0032] The furrow ring knife 21 comprises a furrow knife seat 27, a furrow knife body 28 and a fixing bolt for fixing the furrow knife body 28 on the furrow knife seat 27, the furrow knife seat 27 is composed of two blocking rings with a right-angled triangle cross section, and the right-angled side walls of the two blocking rings are oppositely and spaced arranged on the outer wall of the furrow cylinder 19, wherein the furrow knife body 28 is installed between the two blocking rings, and the fixing bolt passes through the lower part of the two blocking rings and the furrow knife body 28 and fixes and connects them, so that by designing the furrow knife seat 27 on both sides of the furrow knife body 28 in the shape of a right-angled triangle cross section, a "V"-shaped groove can be extruded on the soil during operation, thereby playing the role of a funnel and concentrating the seeds falling into the groove into a narrow gap seeding trench, and the furrow ring knife 21 is fixed on the furrow knife seat 27 through the fixing bolt, which is more convenient for disassembling or replacing the furrow ring knife 21. When manufactured, the furrow knife body 28 is in the shape of a circular ring, a semi-circular ring or a 1 / 4 circular ring and the height of the body is higher than that of the seat, the outer end of the furrow knife body 28 is sharpened and the outer end cross section is in the shape of a cone, so that by using different shapes of ring knives, they can be installed according to different working needs and are more convenient to disassemble and assemble, and the outer end of the furrow knife body 28 is sharpened, so that the straw and clods in the soil can be cut and a narrow gap-shaped seeding trench can be formed.
[0033] The furrow opener in "Y" shape can open a narrow slit-shaped seeding furrow, and the width of the seeding furrow can only accommodate one seed, and the width of the wheat seeding furrow is about 0.3 cm, and the width of the corn seeding furrow is about 0.5 cm, so that the seed can be closely combined with the soil as long as the seed falls into the bottom of the furrow, and the seed can be closely combined with the soil, which is beneficial to the absorption of water and promotes germination. At present, the existing seeding machine furrow opener has a furrow width of 3-5 cm, and a wider one can reach 8-10 cm (such as a wide-width wheat seeding machine), wherein the wider the furrow, the greater the resistance, and the more difficult it is to ensure the quality; and the narrower the furrow, the smaller the resistance, and the easier it is to ensure the quality. Thus, the furrow opener has the smallest furrow width, and the sharp furrow opener 21 can better overcome the soil resistance of clods, straw and the like under the high-speed rotation of the furrow opener under the driving of external force, and a high-quality narrow slit-shaped seeding furrow can be opened. The narrow seeding furrow only needs a small amount of soil to complete the covering, and the subsequent covering quality requirement can be obviously reduced.
[0034] As shown in Figure 3 and Figure 7 , a narrow slit furrow opener includes a furrow opener and a coverer, the coverer includes a cover cylinder 23, and a group or a plurality of cover knives 10 are arranged on the arc-shaped side wall of the cover cylinder 23. The cover knife 10 has a structure that the outer end is narrow and the inner end is wide, and the cross section of the cover knife 10 is in "Y" shape. When designed, the cover cylinder 23 includes two spaced cover knife plates 29 and a cover knife shaft 30 penetrating the middle part of the two cover knife plates 29. The two cover knife plates 29 are connected by a cover knife shoulder 31 which is in a tubular structure matching the cross section of the cover knife plate 29. The cover knife plate 29 can connect the cover knife shoulder 31 and the cover knife shaft 30 as a whole and rotate coaxially. The tubular structure of the cover knife shoulder 31 can control the depth of covering.
[0035] The cover knife 10 includes a cover knife seat 32, a cover knife body 33 and a fixing bolt for fixing the cover knife body 33 on the cover knife seat 32. The cover knife seat 32 is composed of two straight-angled triangular cross-section blocking rings, and the straight-angled side walls of the two blocking rings are oppositely and spaced arranged on the outer wall of the cover cylinder 23. The cover knife body 33 is arranged between the two blocking rings, and the fixing bolt penetrates the lower part of the two blocking rings and the cover knife body 33 and fixes and connects them. By designing the cover knife seat 32 on both sides of the cover knife body 33 as a straight-angled triangular cross-section structure, the cover knife seat 32 can be matched with the narrow slit furrow opener, and the seeds at the middle position of the seeding furrow can be pressed to the bottom of the furrow by the cover knife body 33.
[0036] The soil cover is generally used in cooperation with the furrow opener described above, and has substantially the same structure as the furrow opener described above, with the main difference being the structure of the blade body. Since the soil cover is used in cooperation with the furrow opener described above, the thickness of the soil covering blade body 33 is greater than the thickness of the furrow opening blade body 28, and the height of the soil covering blade body 33 is less than the height of the furrow opening blade body 28. The outer end of the soil covering blade body 33 is not sharpened. The design of the structure of the soil cover is due to the fact that the seeding trench is a narrow gap that can only accommodate a single seed. Some seeds may be hindered by straw and debris and fail to fall to the bottom of the trench, hanging in the middle of the seeding trench. This can cause the seeds to fall dry and affect the emergence rate. The soil cover can press the seeds to the bottom of the trench by using the soil covering ring blade 10, and can also complete the soil covering work. The soil covering blade body 33 of the soil cover is thicker than the furrow opening blade body 28 of the furrow opener, so that the seeds can be pressed to the bottom of the trench while scraping the soil on the two sides of the seeding trench for soil covering.
[0037] By cooperating the soil cover with the furrow opener described above, a seeding trench with a width that can only accommodate a single seed can be opened, and the seeds can be planted in the seeding trench with a width that can only accommodate a single seed to grow, so as to meet the requirements of narrow gap seeding technology, thereby completing the deep seeding and shallow soil covering work. Taking wheat seeding as an example, the suitable seeding depth of wheat is 3-5 cm, and the depth of the trench opened by the conventional seeding method and the thickness of the soil covering are also 3-5 cm. The opening depth of the soil cover and the furrow opener described above is selected to be the maximum value of the suitable seeding depth of wheat, i.e. 5 cm, and the soil covering thickness is generally not more than 1 cm. Therefore, compared with the conventional seeding method, the soil cover and the furrow opener of the present application have a deeper seeding depth and a shallower soil covering thickness. The seeds are planted in a narrow and deep narrow gap, and even if the amount of soil covering is small, the seeds will not fall dry. Shallow soil covering can shorten the emergence time. Previous studies have shown that the shorter the emergence time, the more conducive to the cultivation of strong seedlings. Other seeding methods for crops such as wheat and corn can also be used for other crops such as peanuts and soybeans. Since the narrow seeding trench has less direct sunlight and slow soil moisture evaporation, even if it rains after seeding, the soil covering will not be affected, thereby solving the problem of difficult emergence of legume crops after seeding. The trench that is not filled can be filled after the seeds emerge through irrigation, pressing and other management measures, or can be filled under the influence of natural factors such as precipitation.
[0038] In addition, for wheat, by cooperating multiple groups of furrow openers with multiple groups of landers, narrow row spacing seeding can be realized. Research proves that appropriately reducing row spacing can adjust the contradictory relationship between individual and group, and under the condition of ensuring group, cultivate robust individuals. The minimum row spacing of the present application can reach 5 cm, and the smaller the seeding row spacing that can be realized, the greater the range of the seeding row spacing that can be adjusted, which is more important for late sowing and wheat that needs to increase seeding amount. The specific seeding row spacing can be adjusted by opening and closing the seed discharge port. At present, only imported seeders can achieve a minimum row spacing of 12.5 cm, so the present application can cultivate more concentrated robust individuals under the condition of ensuring group, and further improve yield per mu by cooperating multiple groups of furrow openers with multiple groups of landers.
[0039] As shown in Figures 1-5 A narrow slit furrow opener, further comprising a traction swivel bracket 1 and a power output shaft 2 arranged on the traction swivel bracket 1, the traction swivel bracket 1 is usually installed on the power output end of the rear end of the tractor, and the power output shaft 2 on the traction swivel bracket 1 is driven to rotate through the gearbox. Of course, the above structure is a known structure, which will not be described here; a rotary tiller frame 3 is hingedly connected to the rear side of the traction swivel bracket 1, and a hydraulic cylinder 4 is also arranged on the rotary tiller frame 3 and hingedly connected to the traction swivel bracket 1. Among them, a seeding box 5 is arranged on the rotary tiller frame 3 and the bottom of the seeding box 5 is provided with a plurality of seeding pipes 6, and the above furrow opener 8 is arranged on the front side of the plurality of seeding pipes 6. Among them, the plurality of furrow ring knives 21 of the furrow opener 8 correspond one-to-one to the plurality of seeding pipes 6 and are in the same vertical plane. When designing, the rotary tiller frame 3 is a frame structure composed of multiple structural steel pipes, and the seeding box 5 is arranged on the upper part of the rotary tiller frame 3 and the bottom of the seeding box 5 is provided with a plurality of seeding pipes 6 spaced apart in the left-right direction. The seeding pipes 6 are arranged in the vertical direction. In this way, by adopting the design of multiple seeding pipes 6, multi-row seeding work can be easily realized and the seeding efficiency is improved. When manufacturing, a mounting bracket 11 for mounting the furrow opener 8 is arranged on the front side of the seeding pipes 6 at the lower part of the rotary tiller frame 3. The mounting bracket 11 includes two fixed beams arranged at the lower part of the rotary tiller frame 3, and the furrow knife shaft 12 of the furrow opener is rotatably connected to the two fixed beams at both ends. In this way, by controlling the rotation of the furrow knife shaft 12, multiple groups of furrow ring knives 21 on the furrow cylinder body 19 can be furrowed and can be matched with the seeding pipes 6, thereby realizing multi-row furrowing and seeding work.
[0040] As shown in Figure 1 and Figure 2As shown in the preferred embodiment of the utility model, the front end of the rotary tiller frame 3 is obliquely provided with a hinged blade arm 13, one end of which is hinged to the traction swivel support 1 and the other end is connected to the lower part of the rotary tiller frame 3. In the design, the middle part of the hinged blade arm 13 is fixedly connected to the front end body of the rotary tiller frame 3. The upper part of the hinged blade arm 13 is obliquely arranged upward and is provided with a first hinge joint 14 at the upper end body, which is the same as the axis of the power output shaft 2. The power output shaft 2 passes through the hinge joint and the hinge joint is hinged to the traction swivel support 1. The lower part of the hinged blade arm 13 is obliquely arranged downward and is provided with a second hinge joint 16 at the lower end body, which is the same as the axis of the furrow opener 8. The body of the lower end of the hinged blade arm 13 is usually mounted on the mounting frame 11 for rotatingly connecting the furrow opener 8. The furrow opener shaft 12 extends out of a part of the body of the second hinge joint 16. In the production, the body of the power output shaft 2 outside the first hinge joint 14 and the body of the furrow opener shaft 12 outside the second hinge joint 16 are respectively provided with sprockets 17. The two sprockets 17 are provided with a chain 18 connected to the two sprockets 17. The setting direction of the chain 18 is consistent with the length direction of the hinged blade arm 13. In this way, the hinged blade arm 13 is hinged to the traction swivel support 1 and rotates coaxially with the power output shaft 2, which can effectively control the rotary tiller frame 3 to swing along the hinge joint. At the same time, it can also avoid the chain 18 between the power output shaft 2 and the furrow opener 8 from being covered and wound by sundries, which affects the furrowing work. The setting of the sprocket 17 and the chain 18 can drive the furrow opener 8 to work simultaneously through the power output shaft 2. In the usual production and installation, the hinged blade arm 13 is mounted on the power output shaft 2 through the bearing upper end, and is mounted on the furrow opener shaft 12 of the furrow opener and is welded with the seeder frame, which can float up and down with the frame.
[0041] As Figure 1 and Figure 2 As shown in another preferred embodiment of the utility model, one end of the hydraulic oil cylinder 4 is hinged to the rotary tiller frame 3 and the other end is hinged to the traction swivel support 1. The hinge part on the traction swivel support 1 is located at the rear side of the power output shaft 2 and close to the upper end. By controlling the piston rod extension and retraction of the hydraulic oil cylinder 4, the rotary tiller frame 3 can be controlled to swing up and down along the hinge end of the hinged blade arm 13 hinged to the traction swivel support 1, so as to facilitate the movement of the vehicle carrying the seeding equipment and the maintenance and replacement of each equipment. The included angle between the connecting line between the hinge end of the hinged blade arm 13 hinged to the traction swivel support 1 and the hinge end of the hydraulic oil cylinder 4 hinged to the rotary tiller frame 3 and the central axis of the hydraulic oil cylinder 4 is an acute angle. Of course, the spring pull rod can also replace the hydraulic oil cylinder. In this way, the lower part of the rotary tiller frame 3 is connected to the traction swivel support 1 through the hinged blade arm 13, and the upper part is connected through the hydraulic oil cylinder 4 or the spring pull rod. It can adjust the working intensity through the hydraulic oil cylinder 4 or the spring pull rod, and can also float up and down with the terrain.
[0042] AsFigures 1-5 As shown, in the embodiment of the utility model, the soil covering mechanism 9 matched with the seeding tube 6 is arranged at the rear side of the seeding tube 6, when designing, the soil covering mechanism 9 comprises two hinged frames 22 hinged on the rotary tillage frame 3 at the rear side of the seeding tube 6, the two hinged frames 22 are arranged along the left-right direction of the rotary tillage frame 3 and are swung along the front-rear direction of the rotary tillage frame 3, the soil cover is rotatably connected between the two hinged frames 22, the driving shaft of the soil covering cylinder 23 is arranged with the reset mechanism 24 hinged at the rear part of the rotary tillage frame 3, the reset mechanism 24 is the structure of spring pull rod or shock absorber, and the structure and installation mode of the spring pull rod or shock absorber are the known structure, which will not be repeated here. Among them, the multiple soil covering ring knives 10 arranged on the cylinder wall of the soil covering cylinder 23 correspond to the multiple seeding tubes 6 and the multiple furrowing ring knives 21 one by one, the height of the soil covering ring knife 10 on the soil cover is less than the height of the furrowing ring knife 21 on the furrowing device 8, the body thickness of the outer end part of the soil covering ring knife 10 on the soil cover is greater than the body thickness of the outer end part of the furrowing ring knife 21 on the furrowing device 8, so that the seeds in the seeding trench can be further pressed into the soil, and the seeds can be effectively ensured to be buried in the soil in the trench and to grow in the suitable soil environment. Of course, when manufacturing, usually one furrowing device and one seeding tube 6 and one soil cover form a seeding unit, so that one or more seeding units can be installed on the same frame to form multiple seeding machines according to the flexible combination of production, the lower end part of the furrowing device 8 is adapted to the horizontal height of the lower end part of the seeding tube 6, and the lower end part of the soil covering mechanism 9 is higher than the horizontal height of the lower end part of the furrowing device 8, so that the seeds can be squeezed into the soil at the bottom of the trench.
[0043] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. An opener characterized by: The ditching cylinder (19) comprises one or more groups of ditching ring knives (21) arranged on the arc-shaped side wall of the ditching cylinder (19), the outer end of the body of the ditching ring knife (21) is sharpened, and the body is narrow at the outer end and wide at the inner end, and the cross section of the body is "Y" shaped.
2. The opener of claim 1, wherein: The ditching cylinder (19) comprises two spaced apart ditching cutterheads (25) and a ditching cutter shaft (12) connected to the middle of the two ditching cutterheads (25), and a ditching cutter shoulder (26) is connected between the two ditching cutterheads (25) and has a tubular structure with a cross section adapted to the ditching cutterhead (25).
3. The opener of claim 1 wherein: The ditching ring knife (21) comprises a ditching knife seat (27), a ditching knife body (28), and a fixing bolt for fixing the ditching knife body (28) to the ditching knife seat (27), the ditching knife seat (27) is composed of two cross-sectionally right-angled triangular retaining rings with the right-angled side walls oppositely spaced apart on the outer wall of the ditching cylinder (19), the ditching knife body (28) is arranged between the two retaining rings, and the fixing bolt passes through the two retaining rings and the lower part of the ditching knife body (28).
4. The opener of claim 3 wherein: The ditching knife body (28) is a circular ring, a semi-circular ring, or a 1 / 4 circular ring, and the height of the knife body is higher than that of the seat, the outer end of the ditching knife body (28) is sharpened, and the cross section of the outer end is tapered.
5. A narrow slit furrow opener seeder characterized by: The ditcher comprises the ditcher and a coverter, the coverter comprises a coverter cylinder (23), one or more groups of coverter ring knives (10) are arranged on the arc-shaped side wall of the coverter cylinder (23), the body of the coverter ring knife (10) is narrow at the outer end and wide at the inner end, the cross section of the body is "Y" shaped, a power output shaft (2) is arranged on a traction swivel support (1), a rotary tillage frame (3) is hinged to the rear side of the traction swivel support (1), a hydraulic cylinder (4) is hinged to the rotary tillage frame (3), a seed box (5) is arranged on the rotary tillage frame (3), a plurality of seed tubes (6) are arranged at the bottom of the seed box (5), the ditcher (8) is arranged at the front side of the seed tubes (6), a coverter mechanism (9) is arranged at the rear side of the seed tubes (6) and cooperates with the seed tubes (6), and the coverter is part of the coverter mechanism (9).
6. The narrow slot drill according to claim 5, wherein: The height of the coverter ring knife (10) on the coverter is less than that of the ditching ring knife (21) on the ditcher (8), and the thickness of the body of the outer end of the coverter ring knife (10) on the coverter is greater than that of the outer end of the ditching ring knife (21) on the ditcher (8).
7. The narrow slot drill according to claim 6, wherein: The lower part of the rotary tillage frame (3) is provided with a mounting rack (11) for mounting the ditcher (8) at the front side of the seed tubes (6), the mounting rack (11) comprises two fixed beams spaced apart at the lower part of the rotary tillage frame (3), and the ditcher is rotatably connected between the two fixed beams. The front end of the rotary tillage frame (3) is obliquely provided with a hinged blade arm (13) which is hinged at one end to the traction swivel bracket (1) and connected at the other end to the lower part of the rotary tillage frame (3), the middle part of the hinged blade arm (13) is fixed to the front end body of the rotary tillage frame (3), the upper part of the hinged blade arm (13) is obliquely upwardly arranged and provided at the upper end body with a first hinge joint (14) which is the same as the axis of the power output shaft (2), the power output shaft (2) passes through the hinge joint and the hinge joint is hinged to the traction swivel bracket (1), the lower part of the hinged blade arm (13) is obliquely downwardly arranged and the lower end body is provided with a second hinge joint (16) which is the same as the axis of the furrow opener (8).
8. The narrow slot drill according to claim 7, wherein: The body of the power output shaft (2) outside the first hinge joint (14) and the body of the furrow opener (8) outside the second hinge joint (16) are respectively provided with sprockets (17), the two sprockets (17) are provided with a chain (18) which connects the two sprockets (17), the arrangement direction of the chain (18) is consistent with the length direction of the hinged blade arm (13).
9. The narrow slot drill according to claim 5, wherein: The covering mechanism (9) comprises two hinge frames (22) which are hinged to the rear side of the rotary tillage frame (3), the two hinge frames (22) are arranged in the left-right direction of the rotary tillage frame (3) and swing in the front-rear direction of the rotary tillage frame (3), the cover is rotationally connected between the two hinge frames (22), and the cover is provided with a reset mechanism (24) which is hinged to the rear part of the rotary tillage frame (3).