Front-mounted straw stripper wheat seed drill

Abstract

The present invention discloses a front-mounted straw-stripping wheat drill seed drill, comprising a frame, on which are mounted, from front to back, a straw external-rotating stripping mechanism, a horizontal shallow-layer rotary tillage mechanism, a vertical deep-layer stubble breaking mechanism, a furrowing, fertilizing, and sowing mechanism, and a soil covering and pressing mechanism; the straw external-rotating stripping mechanism comprises at least two groups of straw-stripping devices, and the multiple groups of straw-stripping devices are arranged side by side and correspond one to one to each sowing row; the straw-stripping device comprises a stripping mounting frame, on which are mounted two straw external-rotating assemblies arranged side by side on the left and right, the two straw external-rotating assemblies are located on both sides of the corresponding sowing row, and the adjacent sides of the two straw external-rotating assemblies are overlapped, and an external-rotating stripping drive device is further arranged between the stripping mounting frame and the straw external-rotating assemblies; the present invention has the advantages of simplified structure, low cost, and the like. During the straw cleaning process, the fluffiness of the straw is not damaged, the straw coverage rate remains high, and the straw covering effect is guaranteed.

Description

Technical Field

[0001] The invention relates to a wheat seed drill, in particular to a front-mounted straw-stripping wheat seed drill. Background Art

[0002] Compared with uncovered wheat fields, straw-covered wheat fields have obvious effects in retaining moisture and inhibiting soil erosion. Under the same natural precipitation and soil moisture conditions, straw covering inhibits soil moisture evaporation and better maintains soil moisture, thereby increasing soil moisture. On the premise of reducing the number of irrigation times, the soil moisture content is still higher than that of uncovered wheat fields. The composting of straw in the soil is also conducive to the increase of carbon dioxide concentration in the field, which has a very obvious effect on enhancing photosynthesis and promoting the synthesis of carbohydrates.

[0003] Double-cropping of rice and wheat is the main crop rotation method for grain production in Jiangsu Province. When farming in the general way, the rice straw from the previous crop is crushed and returned to the field, often located in the shallow soil layer or floating on the soil surface. When the subsequent crop of wheat is sown, the seeds cannot fully contact the soil, resulting in problems such as late emergence and low germination rate, which affects wheat yield.

[0004] To solve this problem, the prior art discloses an intelligent deep fertilization seeder with rotary tillage in a clean area of ​​a full straw stubble field. This seeder discloses a straw auger assembly, which serves as a straw cleaning mechanism for returning straw to rows. This straw auger assembly includes two augers arranged on the left and right, and the two parallel augers on the left and right correspond to three sowing rows respectively. Before sowing, the straw auger assembly first collects the straw on the surface of the sowing row and transports it to the outside of the side sowing row to achieve the effect of straw cleaning and ensure efficient sowing.

[0005] However, the use of this type of auger to transport and collect straw also has the following disadvantages: 1. The auger is equipped with a straw knife. When the straw knife is used for collection and transportation, the straw is fragile and easily clogged in the auger; 2. After the straw enters the auger, the straw will be compacted during transportation, and the straw discharged from both sides will eventually be arranged in rows. After the straw is compacted, the fluffiness is not enough, and the thickness of the straw stack is also large, which can no longer achieve the purpose and effect of straw covering; 3. When using an auger to transport straw, the length of the auger is generally large, and the augers on both sides correspond to multiple rows of sowing rows. After the straw is collected, the straw is concentrated on both sides of the multiple rows of sowing rows. The straw coverage rate of the multiple rows of sowing rows decreases as a whole, and the purpose and effect of straw covering still cannot be achieved. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a front-mounted straw-removing wheat seed drill with a simplified structure, which does not damage the fluffiness of the straw, has a high straw coverage rate and does not affect the wheat sowing.

[0007] To solve the above technical problems, the technical solution of the present invention is as follows: a front-mounted straw-stripping wheat seed drill comprises a frame, on which are mounted, from front to back, a straw external rotary stripping mechanism, a horizontal shallow rotary tillage mechanism, a vertical deep stubble breaking mechanism, a furrowing and fertilizing sowing mechanism, and a soil covering and pressing mechanism;

[0008] The straw external rotation and separation mechanism comprises at least two groups of straw separation devices, wherein the multiple groups of straw separation devices are arranged side by side and correspond to each sowing row one by one; the straw separation device comprises a separation mounting frame, on which two straw external rotation components are installed, which are arranged side by side on the left and right sides, and the two straw external rotation components are located on both sides of the corresponding sowing row and the adjacent sides of the two straw external rotation components are overlapped. An external rotation and separation drive device is further provided between the separation mounting frame and the straw external rotation component, and the external rotation and separation drive device drives the two straw external rotation components to rotate outward respectively, so as to externally rotate and separate the surface straw of the sowing row to the space between the two sides of the sowing row;

[0009] The horizontal shallow rotary tillage mechanism comprises at least two groups of shallow rotary tillage devices, wherein the multiple groups of shallow rotary tillage devices are arranged side by side and correspond to each sowing row respectively; each shallow rotary tillage device is respectively arranged behind each straw separating device, and the soil entry surface of the shallow rotary tillage device is close to the separating surface of the straw separating device;

[0010] The vertical deep stubble breaking mechanism includes at least two groups of deep stubble breaking devices, which are arranged side by side and correspond to each sowing row respectively; each deep stubble breaking device is respectively arranged behind each shallow rotary tillage device, and the soil entry surface of the deep stubble breaking device is close to the separation surface of the straw separation device;

[0011] The furrowing and fertilizing sowing mechanism includes at least two groups of furrowing and fertilizing sowing devices, wherein the multiple groups of furrowing and fertilizing sowing devices are arranged side by side and correspond one to one with each sowing row; each of the furrowing and fertilizing sowing devices is respectively arranged behind each of the deep stubble breaking devices; the furrowing and fertilizing sowing device includes a furrowing and fertilizing device for furrowing and fertilizing the soil and two furrowing and sowing devices for furrowing and sowing the soil, and the two sowing belts formed by the two furrowing and sowing devices are located directly behind the two straw external rotation components;

[0012] The soil covering and suppressing mechanism includes at least two groups of soil covering and suppressing devices. The multiple groups of soil covering and suppressing devices are arranged side by side and correspond to each sowing row one by one. Each soil covering and suppressing device is respectively arranged behind each furrowing, fertilizing and sowing device.

[0013] As a preferred technical solution, the straw external rotation component includes a straw external rotation wheel, the upper part of the straw external rotation wheel is connected to the external rotation wheel shaft, the top of the external rotation wheel shaft is rotatably mounted on the separation mounting frame, and the bottom outer circle of the straw external rotation wheel is installed with a straw separation brush, and the adjacent sides of the straw separation brushes on the left and right straw external rotation components are staggered and overlapped.

[0014] As a preferred technical solution, the straw-stripping brush is an elastic comb with its bottom end extending obliquely toward the periphery.

[0015] As an optimal technical solution, the straw external rotating wheel is tilted toward the rear of the frame, and the front bottom end of the straw removing brush serves as a sweeping brush action part. The height of the sweeping brush action part is lower than the soil plane and contacts the ground to remove the surface straw.

[0016] As a preferred technical solution, the external rotation peeling drive device includes a peeling drive motor installed on the peeling mounting frame, wherein a driving gear is installed on one of the external rotation wheel shafts, and a driven gear is installed on the other external rotation wheel shaft, the driving gear and the driven gear are engaged with each other, and the corresponding external rotation wheel shaft on which the driving gear is installed is connected to the output end of the peeling drive motor.

[0017] As an optimal technical solution, the outer ends of the two straw external rotating wheels are respectively equipped with external rotating straw blocking devices, which are arranged on the outside of the corresponding straw external rotating wheels, and the length direction is parallel to the sowing belt, forming a straw blocking and removing surface on the outside of the sowing belt.

[0018] As an optimal technical solution, the externally rotating straw blocking device includes a straw blocking mounting frame fixed on the straw separating mounting frame, and externally rotating straw blocking comb teeth are installed on the straw blocking mounting frame. Several externally rotating straw blocking comb teeth are arranged along the length direction of the sowing belt to form the straw blocking and straw removing surface on the outside of the straw separating brush. The outer end of the straw separating brush passes through the straw blocking and straw removing surface of the externally rotating straw blocking comb teeth and extends to the outside of the straw blocking and straw removing surface. The straw blocking and straw removing surface also serves as a sweeping brush cleaning part for cleaning the externally rotating straw blocking comb teeth.

[0019] As a preferred technical solution, the bottom end of the straw-blocking and removing surface of the externally rotating straw-blocking comb teeth is close to the soil surface.

[0020] As an optimal technical solution, the furrowing and fertilizing device includes a furrowing and fertilizing device and a precision fertilizing device connected to the furrowing and fertilizing device for fertilizing, and the furrowing and sowing device includes a furrowing and sowing device and a precision sowing device connected to the furrowing and sowing device for sowing; the furrowing and fertilizing device includes a fertilizer pipe, a furrowing device is fixedly installed on the bottom end of the fertilizer pipe, the top end of the fertilizer pipe is connected to the fertilizer lower port of the precision fertilizing device, and the bottom end of the fertilizer pipe is provided with a fertilizer port located behind the furrow opener; the furrowing and sowing device includes a sowing pipe, a furrowing device is fixedly installed on the bottom end of the sowing pipe, the top end of the sowing pipe is connected to the sowing port of the precision sowing device, and the bottom end of the sowing pipe is provided with a sowing port located behind the furrow opener, and the two sowing ports are symmetrically arranged behind the fertilizing port, and the width between the two sowing ports is smaller than the width between the two side ends of the straw outward rotating components.

[0021] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] 1. The cleaned straw in this machine is partially covered to avoid the position where the seedlings are sown. This does not undermine the purpose of returning the straw to the field and does not cover the seedlings. The surface residue and straw are concentrated in the non-rotary tillage rows through the external rotation, which also has the effect of increasing the ground temperature and keeping warm. As a result, the wheat grains in the rotary tillage sowing strips are in full contact with the soil, thereby improving the wheat emergence rate and solving the problems of winter wheat strip sowing and drying seeds. This technology uses a machine to complete the straw cleaning, rotary tillage, fertilization, sowing and pressing of the seedling strips at one time;

[0023] 2. This machine can remove the straw from the sowing row under the condition of straw mulching and returning it to the field, thus achieving sowing operations without straw and greatly improving the sowing quality. The core of this application technology is to cleverly create a concentrated straw covering area in the wheat field, so that the straw not only does not interfere with wheat sowing, but also provides a better microenvironment for wheat growth. By placing the crushed straw on both sides of the row and deep loosening and shallow tillage of the cleaned sowing belt soil for sowing, the requirements of protective tillage and less tillage land preparation under straw mulching conditions are met, the straw content in the soil of the seedling belt is reduced, and the seeds are sown into the soil. The rear-mounted pressing roller ensures the soil shaping and pressing effect.

[0024] 3. In the present application, a straw external rotating wheel is provided on both sides of a sowing row, that is, the two straw external rotating wheels push the straw covering a sowing row to both sides respectively. Compared with the existing technology, the straw coverage rate is still relatively high, and the purpose and effect of straw covering can be guaranteed; in addition, in the present application, external rotating wheels are used to rotate the side of the straw outward, and the straw has a curved path for throwing backwards. The fluffiness of the straw is better, and the purpose and effect of straw covering can still be achieved; and when the straw is thrown backwards, the length of the straw is not destroyed, the straw covering effect is not affected, and the blockage problem that often exists in the auger in the existing technology will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0026] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0027] Figure 2 is a side view of an embodiment of the present invention;

[0028] Figure 3 is a bottom view of an embodiment of the present invention;

[0029] Figure 4 2. It is a structural diagram of a straw separating device according to an embodiment of the present invention;

[0030] Figure 5 2. It is a front view of a straw separating device according to an embodiment of the present invention;

[0031] Figure 6 2. This is a rear view of the straw separating device according to an embodiment of the present invention;

[0032] Figure 7 2. It is a side view of a straw separating device according to an embodiment of the present invention;

[0033] In the figure: 1-frame; 2-straw external rotation and separation mechanism; 21-separation mounting frame; 22-straw external rotation wheel; 23-external rotation wheel rotating shaft; 24-straw separation brush; 25-separation drive motor; 26-driving gear; 27-driven gear; 28-straw blocking mounting frame; 29-external rotation and separation comb teeth; 3-horizontal shallow rotary tillage mechanism; 31-rotary tillage blade shaft; 32-rotary tillage blade; 4-vertical deep stubble breaking mechanism; 41-stubble breaking blade frame; 42-deep stubble breaking blade; 5-ditching and fertilizing sowing mechanism; 51-ditching and fertilizing device; 52-ditching and sowing device; 6-soil covering and suppression mechanism; 61-soil covering plate; 62-suppression wheel. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. It is understood that those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0035] like Figures 1 to 3 As shown, the front-mounted straw-stripping wheat seed drill comprises a frame 1, on which are mounted, from front to back, a straw external rotary separation mechanism 2, a horizontal shallow rotary tillage mechanism 3, a vertical deep stubble breaking mechanism 4, a furrowing, fertilizing, and sowing mechanism 5, and a soil covering and pressing mechanism 6; the wheat seed drill of the present invention is used to realize a series of operations such as straw clearing, rotary tillage, fertilizing, sowing, and pressing of two sowing rows at one time, so each mechanism is correspondingly equipped with two groups. Of course, if a series of sowing operations of three sowing rows are to be realized at one time, then each mechanism is correspondingly equipped with three groups.

[0036] See also Figures 1 to 3 The straw outward rotating separation mechanism 2 includes at least two groups of straw separation devices. Multiple groups of straw separation devices are arranged side by side and correspond to each sowing row one by one. In this embodiment, two groups of straw separation devices are provided, which are used to clear the straw from the seedling belts of two sowing rows at the same time.

[0037] See also Figures 4 to 7 The straw separating device includes a separating mounting frame 21, which serves as the mounting base of the device. The separating mounting frame 21 in this embodiment is fixedly connected to the soil retaining cover of the horizontal shallow rotary tillage mechanism 3 and is indirectly connected to the frame 1; two straw external rotation components are installed on the separating mounting frame 21, which are arranged side by side on the left and right. The two straw external rotation components are located on both sides of the corresponding sowing row and the adjacent sides of the two straw external rotation components are overlapped. An external rotation separating drive device is also provided between the separating mounting frame 21 and the straw external rotation component, and the external rotation separating drive device drives the two straw external rotation components to rotate outward respectively to rotate the surface straw of the sowing row to the space between the rows on both sides of the sowing row. When removing straw, the outward rotating removal drive device drives the two straw outward rotating components to move simultaneously. The straw outward rotating components rotate outward to remove the surface straw on the sowing row outward and to the space between the rows on both sides of the sowing row. Since the adjacent sides of the two straw outward rotating components overlap, full coverage of the sowing row is achieved, avoiding areas on the surface of the sowing row that are missed.

[0038] The straw extrorotating assembly includes a straw extrorotating wheel 22, the upper portion of which is connected to an extrorotating wheel shaft 23, the top of which is rotatably mounted on the extrorotating wheel shaft 23 on the extrorotating mounting frame 21, and a straw extrorotating brush 24 mounted on the outer circumference of the bottom of the straw extrorotating wheel 22. The extrorotating driving device drives the extrorotating wheel shaft 23 to rotate, thereby driving the straw extrorotating wheel 22 and the straw extrorotating brush 24 to rotate. The adjacent sides of the straw extrorotating brushes 24 on the left and right straw extrorotating assemblies are arranged in an interlaced and overlapping manner to avoid areas in the middle of the sowing row from being missed. The straw extrorotating brushes 24 are elastic comb teeth with the bottom end extending obliquely toward the periphery. The elastic comb teeth are made of rubber with certain flexibility and toughness and good wear resistance. In this embodiment, since the elastic comb teeth of the straw removal have a certain flexibility and good deformability, a profiling effect can be achieved without adding a profiling device. When the soil surface is uneven, the comb teeth can naturally deform and better adapt to the uneven soil, without affecting the straw removal effect, and will not collide with hard soil blocks. Compared with the auger structure of the prior art, it has the advantages of simplified structure and low cost, and has a self-profiling effect, and the removal effect is better. The straw outer rotary wheel 22 is detachably fixedly connected to the outer rotary wheel shaft by bolts, which can facilitate the replacement of worn elastic comb teeth, and when straw cleaning is not needed, the straw outer rotary assembly can also be disassembled without affecting the rotary tillage and sowing operations of the wheat planter.

[0039] The straw epicyclic wheel 22 is tilted toward the rear of the frame 1. The front bottom end of the straw-removing brush 24 serves as a sweeping action portion. The sweeping action portion is lower than the soil level and contacts the ground to remove straw from the surface. In this embodiment, the frontmost sweeping action portion, which can contact the ground, is intended to reduce friction between the spring tines and the ground during the inactive phase, thereby increasing the service life of the spring tines.

[0040] The extrorotating shearing drive device includes a shearing drive motor 25 mounted on the shearing mounting frame 21. One of the extrorotating wheel shafts 23 is mounted with a driving gear 26, and the other extrorotating wheel shaft 23 is mounted with a driven gear 27. The driving gear 26 and the driven gear 27 are meshed with each other, and the corresponding extrorotating wheel shaft 23 mounted with the driving gear 26 is connected to the output end of the shearing drive motor 25. The shearing drive motor 25 can also be a rotary hydraulic cylinder. When the shearing drive motor 25 is in operation, it drives the driving gear 26 to rotate, which in turn drives the driven gear 27 to rotate. The driving gear 26 and the driven gear 27 are respectively fixed to the corresponding extrorotating wheel shafts 23. The two extrorotating wheel shafts 23 are driven to rotate, thereby causing the straw extrorotating wheel 22 and the straw shearing brush 24 mounted thereon to rotate accordingly. The straw shearing brush 24 rotates outward about its axis, shearing the straw off the ground surface.

[0041] In order to prevent the straw that is pushed outward from being brought back into the sowing row by the rotating straw-pushing brush 24, the outer ends of the two straw outer-rotating wheels 22 are respectively equipped with outer-rotating straw-blocking devices. The outer-rotating straw-blocking devices are arranged on the outer sides of the corresponding straw outer-rotating wheels 22, and the length direction is parallel to the sowing belt, forming a straw-blocking and straw-removing surface on the outer side of the sowing belt. During the straw-pushing process, there is a phenomenon that the straw is retained between the spring teeth, and the straw is easily brought back into the sowing row, making it impossible to achieve the best straw cleaning effect. The straw-blocking and straw-removing surface is arranged on the outer side of the straw outer-rotating wheel 22 to prevent the straw that splashes backward from moving toward the sowing row, which is used to reduce the amount of straw that enters the sowing row.

[0042] The externally rotating straw blocking device includes a straw blocking mounting frame 28 fixed to the straw separation mounting frame 21. Externally rotating straw blocking comb teeth 29 are mounted on the straw blocking mounting frame 28. A plurality of externally rotating straw blocking comb teeth 29 are arranged along the length of the sowing belt, forming a straw blocking and removing surface on the outside of the straw separation brush 24. The outer end of the straw separation brush 24 passes through the straw blocking and removing surface of the externally rotating straw blocking comb teeth 29 and extends to the outside of the straw blocking and removing surface. The straw blocking and removing surface also serves as a sweeping brush cleaning member for cleaning the externally rotating straw blocking comb teeth 29. The externally rotating straw blocking comb teeth 29 are made of rubber and have a certain degree of softness. The outer rotating straw-blocking comb teeth 29 are arranged in a row to prevent the backward-splashing straw from entering the sowing row. At the same time, since the outer rotating straw-blocking comb teeth 29 and the elastic stripping comb teeth are both tooth structures, and the outer end of the straw stripping brush 24 passes through the outer side of the straw-blocking and straw-removing surface, a portion of the teeth between the two can cross. At this time, even if there is straw remaining between the straw stripping brushes 24, after passing through the straw-blocking and straw-removing surface, the straw stripping brush 24 crosses and contacts with the plurality of outer rotating straw-blocking comb teeth 29. The gap between the straw stripping brushes 24 will open, and the remaining straw will fall off. The outer rotating straw-blocking comb teeth 29 will also fork into the gap between the straw stripping brushes 24, achieving the effect of clearing the straw. In addition, the straw stripping surface can also block straw splashed from the other side when cleaning straw, preventing straw from running around between adjacent rows when cleaning multiple rows at the same time, affecting the straw cleaning effect.

[0043] In order to ensure the straw blocking effect, the bottom end of the straw blocking and straw removing surface of the externally rotating straw blocking comb teeth 29 is close to the soil surface, so that the straw blocking and straw removing surface is as large as possible to achieve a better blocking effect; in addition, there is a certain inclination angle between the bottom end of the straw blocking and straw removing surface and the soil surface, that is, the straw blocking and straw removing surface gradually tilts upward from front to back, avoiding the ineffective contact of the externally rotating straw blocking comb teeth 29 at the rear with the ground, thereby increasing the service life.

[0044] The horizontal shallow rotary tillage mechanism 3 includes at least two groups of shallow rotary tillage devices, and the multiple groups of shallow rotary tillage devices are arranged side by side and correspond to each sowing row respectively; each shallow rotary tillage device is respectively arranged behind each straw separating device, and the soil entry surface of the shallow rotary tillage device is close to the separating surface of the straw separating device; the shallow rotary tillage device includes a transversely rotating rotary tillage blade shaft 31, and the two ends of the rotary tillage blade shaft 31 are mounted on the rotary tillage bracket through bearings. A rotary tillage seat is fixedly mounted on the rotary tillage blade shaft 31, and a plurality of rotary tillage blades 32 for longitudinal stubble breaking and soil crushing are evenly distributed on the periphery of the rotary tillage seat. The rotary tillage blade shaft 31 is driven by a hydraulic motor, which belongs to the prior art and will not be described here. A soil retaining cover is installed on the top of the rotary tillage bracket, and the soil retaining cover shields the front, top and back of the rotary tillage blade shaft 31, the rotary tillage seat and the rotary tillage blade 32. The width of the two rotary tillage blades 32 is smaller than the width of the two straw separating devices, which reduces the amount of straw in the rotary tillage area and improves the subsequent sowing effect. The shallow rotary tillage device is a prior art and will not be described in detail here.

[0045] The vertical deep stubble breaking mechanism 4 includes at least two groups of deep stubble breaking devices, multiple groups of which are arranged side by side and correspond to each sowing row respectively; each deep stubble breaking device is respectively arranged behind each shallow rotary tillage device, and the soil entry surface of the deep stubble breaking device is close to the separation surface of the straw separation device; the deep stubble breaking device includes a stubble breaking knife frame 41, the bottom end of which is fixedly mounted with a deep stubble breaking knife 42 arranged in the soil cutting direction. The stubble breaking knife frame 41 and the deep stubble breaking knife 42 are driven to rotate by a hydraulic motor and belong to the prior art and will not be described in detail here. The width between the two deep stubble breaking knives 42 is less than the width of the two straw separation devices, reducing the amount of straw in the rotary tillage area. The deep stubble breaking device is a prior art and will not be described in detail here.

[0046] The furrowing fertilizing and sowing mechanism 5 includes at least two groups of furrowing fertilizing and sowing devices, and the multiple groups of the furrowing fertilizing and sowing devices are arranged side by side and correspond to each sowing row one by one; each of the furrowing fertilizing and sowing devices is respectively arranged behind each of the deep stubble breaking devices; the furrowing fertilizing and sowing device includes a furrowing fertilizing device 51 for furrowing and fertilizing the soil and two furrowing sowing devices 52 for furrowing and sowing the soil, and the two sowing belts formed by the two furrowing sowing devices 52 are located directly behind the two straw external rotation components; the furrowing fertilizing device 51 includes a furrowing fertilizer applicator and a precision fertilizing device connected to the furrowing fertilizer applicator for fertilizing, and the furrowing sowing device 52 includes a furrowing sowing device and a furrowing sowing device connected to the furrowing sowing device The precision sowing device is connected for sowing; the furrowing fertilizer includes a fertilizer pipe, a furrow opener is fixedly installed on the bottom end of the fertilizer pipe, the top end of the fertilizer pipe is connected to the fertilizer lower port of the precision sowing device, and the bottom end of the fertilizer pipe is provided with a fertilizer port located behind the furrow opener; the furrowing seeder includes a sowing pipe, a furrow opener is fixedly installed on the bottom end of the sowing pipe, the top end of the sowing pipe is connected to the sowing port of the precision sowing device, and the bottom end of the sowing pipe is provided with a sowing port located behind the furrow opener, and the two sowing ports are symmetrically arranged behind the fertilization port, and the width between the two sowing ports is smaller than the width between the two side ends of the straw external rotation components, so as to ensure that the sowing port is in the area after the straw is cleared.

[0047] The soil-covering and suppressing mechanism 6 includes at least two sets of soil-covering and suppressing devices, arranged side by side and corresponding to each seeding row. Each soil-covering and suppressing device is located behind each of the furrowing, fertilizing, and sowing devices. The soil-covering and suppressing devices include a covering plate 61 and a suppressing wheel 62, both of which are conventional technologies and will not be described in detail here.

[0048] The cleaned straw in this machine is partially covered to avoid the position where seedlings are grown, which does not destroy the purpose of returning straw to the field and does not cover the seedlings. The surface residue and straw are concentrated in the non-rotary tillage rows through the external rotation, which also has the effect of increasing the ground temperature and keeping warm, so that the wheat grains in the rotary tillage sowing strips are in full contact with the soil, thereby increasing the wheat germination rate and solving the problems of winter wheat strip sowing and drying seeds. This technology uses a machine to complete the straw cleaning, rotary tillage, fertilization, sowing and suppression in the seedling strips at one time.

[0049] This machine can remove straw from the sowing rows under the condition of straw mulching, achieving straw-free sowing operations and greatly improving sowing quality. The core of this application technology is to cleverly create a concentrated straw mulching area in the wheat field, so that the straw not only does not interfere with wheat sowing, but also provides a better microenvironment for wheat growth. By placing the crushed straw on both sides of the row and deep loosening and shallow plowing the cleaned sowing belt soil for sowing, the requirements of conservation tillage and reduced tillage under straw mulching are met, the straw content in the seedling belt soil is reduced, and the seeds are sown into the soil. The rear-mounted pressing roller ensures the soil shaping and pressing effect.

[0050] In the present application, a straw external rotating wheel 22 is provided on both sides of a sowing row, that is, the two straw external rotating wheels 22 push the straw covering a sowing row to both sides respectively. Compared with the existing technology, the straw coverage rate is still relatively high, and the purpose and effect of straw covering can also be guaranteed; in addition, in the present application, external rotating wheels are used to rotate the side of the straw outward, and the straw has a curved path for throwing backwards, and the fluffiness of the straw is better, and the purpose and effect of straw covering can still be achieved; and when the straw is thrown backwards, the length of the straw is not destroyed, the covering effect of the straw is not affected, and the blockage problem that often exists in the auger in the existing technology will not occur.

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A front-mounted straw-removing wheat seed drill, comprising a frame, characterized in that: The frame is equipped with a straw external rotary separation mechanism, a horizontal shallow rotary tillage mechanism, a vertical deep stubble breaking mechanism, a furrowing and fertilizing sowing mechanism, and a soil covering and pressing mechanism from front to back. The straw external rotation and separation mechanism comprises at least two groups of straw separating devices, and multiple groups of straw separating devices are arranged side by side and correspond to each sowing row one by one; the straw separating device comprises a separating mounting frame, and two straw external rotation assemblies arranged side by side are installed on the separating mounting frame, and the two straw external rotation assemblies are located on both sides of the corresponding sowing row and the adjacent sides of the two straw external rotation assemblies are overlapped. An external rotation and separation drive device is also provided between the separating mounting frame and the straw external rotation assembly, and the external rotation and separation drive device drives the two straw external rotation assemblies to rotate toward the outside respectively to rotate the surface straw of the sowing row to the space between the rows on both sides of the sowing row; the straw external rotation assembly comprises a straw external rotation wheel, the upper part of the straw external rotation wheel is connected to the external rotation wheel shaft, and the top of the external rotation wheel shaft is rotatably mounted on the separating mounting frame, and the straw external rotation wheel The outer periphery of the bottom is provided with a straw stripping and sweeping brush, and the adjacent sides of the straw stripping and sweeping brushes on the left and right straw external rotating components are staggered and overlapped with each other; the outer ends of the two straw external rotating wheels are respectively provided with an external rotating straw blocking device, and the external rotating straw blocking device is arranged on the outer side of the corresponding straw external rotating wheel, and the length direction is parallel to the sowing belt to form a straw blocking surface on the outer side of the sowing belt; the external rotating straw blocking device includes a straw blocking mounting frame fixed to the said stripping mounting frame, and the said straw blocking comb teeth are installed on the said straw blocking mounting frame, and a plurality of said external rotating straw blocking comb teeth are arranged along the length direction of the sowing belt to form the straw blocking surface on the outer side of the straw stripping and sweeping brush, and the outer end portion of the straw stripping and sweeping brush passes through the straw blocking surface of the external rotating straw blocking comb teeth and extends to the outer side of the said straw blocking surface, and the said straw blocking surface also serves as a sweeping brush cleaning member for cleaning the said external rotating straw blocking comb teeth; The horizontal shallow rotary tillage mechanism comprises at least two groups of shallow rotary tillage devices, wherein the multiple groups of shallow rotary tillage devices are arranged side by side and correspond to each sowing row respectively; each shallow rotary tillage device is respectively arranged behind each straw separating device, and the soil entry surface of the shallow rotary tillage device is close to the separating surface of the straw separating device; The vertical deep stubble breaking mechanism includes at least two groups of deep stubble breaking devices, which are arranged side by side and correspond to each sowing row respectively; each deep stubble breaking device is respectively arranged behind each shallow rotary tillage device, and the soil entry surface of the deep stubble breaking device is close to the separation surface of the straw separation device; The furrowing and fertilizing sowing mechanism includes at least two groups of furrowing and fertilizing sowing devices, wherein the multiple groups of furrowing and fertilizing sowing devices are arranged side by side and correspond one to one with each sowing row; each of the furrowing and fertilizing sowing devices is respectively arranged behind each of the deep stubble breaking devices; the furrowing and fertilizing sowing device includes a furrowing and fertilizing device for furrowing and fertilizing the soil and two furrowing and sowing devices for furrowing and sowing the soil, and the two sowing belts formed by the two furrowing and sowing devices are located directly behind the two straw external rotation components; The soil covering and suppressing mechanism includes at least two groups of soil covering and suppressing devices. The multiple groups of soil covering and suppressing devices are arranged side by side and correspond to each sowing row one by one. Each soil covering and suppressing device is respectively arranged behind each furrowing, fertilizing and sowing device.

2. The front-mounted straw-removing wheat seed drill according to claim 1, characterized in that: The straw-stripping brush is a straw-stripping elastic comb with a bottom end extending obliquely toward the periphery.

3. The front-mounted straw-removing wheat seed drill according to claim 1, characterized in that: The straw outer rotating wheel is tilted toward the rear of the frame, and the front bottom end of the straw removing brush serves as a sweeping brush action part. The height of the sweeping brush action part is lower than the soil plane and contacts the ground to remove the surface straw.

4. The front-mounted straw-removing wheat seed drill according to claim 1, characterized in that: The external rotation tearing drive device includes a tearing drive motor mounted on the tearing mounting frame, wherein a driving gear is mounted on one of the external rotation wheel shafts, and a driven gear is mounted on the other external rotation wheel shaft, the driving gear and the driven gear are engaged with each other, and the corresponding external rotation wheel shaft on which the driving gear is mounted is connected to the output end of the tearing drive motor.

5. The front-mounted straw-removing wheat seed drill according to claim 1, characterized in that: The bottom end of the straw-blocking and removing surface of the externally rotating straw-blocking comb teeth is close to the soil surface.

6. The front-mounted straw-removing wheat seed drill according to claim 1, characterized in that: The furrowing and fertilizing device includes a furrowing and fertilizing device and a precision fertilizing device connected to the furrowing and fertilizing device for fertilizing, and the furrowing and sowing device includes a furrowing and sowing device and a precision sowing device connected to the furrowing and sowing device for sowing; the furrowing and fertilizing device includes a fertilizer pipe, the bottom end of the fertilizer pipe is fixedly installed with a furrow opener 1, the top end of the fertilizer pipe is connected with the fertilizer lowering port of the precision fertilizing device, and the bottom end of the fertilizer pipe is provided with a fertilizer port located behind the furrow opener 1; the furrowing and sowing device includes a sowing pipe, the bottom end of the sowing pipe is fixedly installed with a furrow opener 2, the top end of the sowing pipe is connected with the sowing port of the precision sowing device, and the bottom end of the sowing pipe is provided with a sowing port located behind the furrow opener 2, the two sowing ports are symmetrically arranged behind the fertilizing port, and the width between the two sowing ports is smaller than the width between the two side ends of the two straw external rotation components.

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