A seeder, strip tillage, fertilization and seeding unit and complete machine

Abstract

The application discloses a seeder, which comprises a rectifying barrel and an overflow pipe, the rectifying barrel comprises a side wall and a top wall, the side wall and the top wall form a closed space, the side wall is provided with an inlet and an outlet, the outlet is opposite to the top wall, and the side wall supports the movement of seeds; the amount and speed of the air flow discharged from the overflow pipe can be controlled, so that the pressure in the rectifying barrel is changed, the amount of the material entering the rectifying barrel is adjusted, and the seeding speed is adjusted. The application further discloses a strip tillage fertilization seeding unit, which comprises the above seeder, the seeder is installed on the seeding unit, and further comprises a stubble removing and straw cleaning device, a frame, a four-link profiling mechanism, a subsoiling device, a soil loosening and ridge forming device and a pressing device, which are sequentially connected; the other end of the supporting arm is changed into being inclined to the end of the frame, so that the machine body is prevented from being subjected to excessive impact force, and the service life of the machine is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a seeder, a strip tillage, fertilization and sowing unit and a complete machine. Background Art

[0002] When sowing, the existing seeder directly discharges materials such as seeds and fertilizers from the outlet of the seeder. Since the discharge speed of the materials cannot be controlled, the materials are easily splashed everywhere during discharge. In addition, the speed of materials such as seeds and fertilizers when they come into contact with the ground is too high, and they are easily ejected from the seedling belt area. During sowing, there is also the problem that the amount of material inside the seeder cannot be adjusted according to sowing needs or is inconvenient to adjust.

[0003] The existing straw cleaning wheel brackets of strip tillers are mostly installed vertically or with the lower end tilted forward. The force applied to the straw cleaning wheel bracket is passive. Under this installation method, the stubble breaking disc installed on the straw cleaning wheel bracket is subjected to the force of the straw cleaning wheel bracket in an oblique downward direction when working. When encountering an emergency, such as encountering a hard object such as a stone, an oblique upward force will be generated on the stubble breaking disc. The two forces lack a sufficient angle to drive the straw cleaning wheel bracket to lift, and the straw cleaning wheel bracket will be subjected to greater pressure. Therefore, this installation method is difficult to cope with the impact caused by emergencies, has high requirements on the strength of the machine, and shortens the service life of the machine. Summary of the Invention

[0004] The object of the present invention is to solve at least one of the technical drawbacks.

[0005] In order to solve the problems mentioned in the background technology and overcome the shortcomings of the existing technology, the present invention provides a seeder, including a rectifying barrel and an overflow pipe, the rectifying barrel including side walls and a top wall, the side walls and the top wall forming a closed space, the side walls are provided with a feed inlet and a discharge outlet, the discharge outlet is opposite to the top wall, and the side walls support the movement of seeds;

[0006] The overflow pipe is opened at both ends to form an overflow channel. One end of the overflow pipe passes through the top wall and is inserted into the interior of the rectifying barrel and can move up and down. The up and down movement of the overflow pipe can adjust the speed at which the airflow in the rectifying barrel is discharged from the overflow channel.

[0007] Preferably, a spiral groove extending toward the discharge port is provided on the inner side of the side wall.

[0008] In any of the above schemes, preferably, a pipe sleeve is provided on the top wall, the overflow pipe cooperates with the pipe sleeve, the up and down movement of the overflow pipe is specifically that the overflow pipe moves along the pipe sleeve, and the overflow pipe is stationary relative to the pipe sleeve during sowing.

[0009] The present invention also discloses a strip tillage and fertilization sowing unit, comprising any of the above-mentioned seeders, which is mounted on the sowing unit and further comprises a stubble-breaking and straw-clearing device, a frame, a four-bar profiling mechanism, a deep loosening device, a moisture-dispersing and ridging device, and a pressing device, wherein the stubble-breaking and straw-clearing device, the frame, the four-bar profiling mechanism, the deep loosening device, the seeder, the moisture-dispersing and ridging device, and the pressing device are connected in sequence;

[0010] The end of the frame connected to the pulling cart is the frame head end, and the end of the frame away from the pulling cart is the frame tail end. The stubble breaking and straw cleaning device includes a stubble breaking wheel, a support arm and a buffer device. The stubble breaking wheel is installed at one end of the support arm, and the other end of the support arm is connected to the buffer device. The buffer device is connected to the frame head end. The buffer device includes:

[0011] A connecting rod, a first connecting shaft, a hinge plate, a spring seat, a first spring and a connecting bolt, wherein the connecting bolt is sequentially connected in series to the spring seat, the first spring and the hinge plate, one end of the connecting rod is hinged to the connecting bolt, the other end of the connecting rod is hinged to the other end of the support arm, and the other end of the support arm is hinged to the hinge plate via the first connecting shaft;

[0012] The rack is arranged horizontally, one end of the support arm is inclined toward the end of the rack, and the angle between the support arm and the rack is less than ninety degrees.

[0013] Preferably, it further includes a straw cleaning wheel assembly, which includes a first straw cleaning wheel group, a second straw cleaning wheel group and a straw cleaning wheel connecting plate; the first straw cleaning wheel group is connected to the second straw cleaning wheel group through the straw cleaning wheel connecting plate, a stubble breaking wheel is arranged between the first straw cleaning wheel group and the second straw cleaning wheel group, the first straw cleaning wheel group and the second straw cleaning wheel group are parallel to the support arm, and the first straw cleaning wheel group includes:

[0014] The first straw cleaning wheel bracket and the first straw cleaning wheel, a straw cleaning wheel is arranged at one end of the first straw cleaning wheel, one end of the first straw cleaning wheel is also fixedly connected to the support arm, and the other end of the first straw cleaning wheel is rotatably connected to the connecting shaft.

[0015] Preferably, in any of the above schemes, the four-bar profiling mechanism includes an upper connecting rod, a lower connecting rod, a guide rod, a second spring and a connecting device, one end of the upper connecting rod and one end of the lower connecting rod are respectively connected to the connecting device, the other end of the upper connecting rod and the other end of the lower connecting rod are respectively connected to the frame, one end of the guide rod is connected to the frame, and the other end of the guide rod is connected to the lower connecting rod through the second spring.

[0016] In any of the above schemes, preferably, the deep loosening device includes a shovel handle, a shovel tip and a fertilizer discharge pipe, one end of the shovel handle is connected to the connecting device, and the other end of the shovel handle is connected to the shovel tip and the fertilizer discharge pipe respectively.

[0017] In any of the above schemes, preferably, the soil distribution and ridge-forming device includes a support frame, a soil gathering disc bracket, a soil gathering disc and a width adjustment bracket, the support frame includes a first support tube, a second support tube and a third support tube connected in sequence, the width adjustment bracket includes a bracket sleeve and an adjustment tube, the bracket sleeve is vertically connected to the adjustment tube, one end of the soil gathering disc bracket is inserted into the bracket sleeve, the other end of the soil gathering disc bracket is connected to the soil gathering disc, the adjustment tube is inserted into the first support tube, a seeder is provided above the second support tube, and a plurality of spiral holes are opened on the bracket sleeve along a spiral trajectory.

[0018] Preferably, in any of the above schemes, the pressing device includes a pressing rod and a pressing wheel, one end of the pressing rod is inserted into the third support tube, and the other end of the pressing rod is connected to the pressing wheel.

[0019] The present invention also discloses a strip tillage, fertilization and sowing machine, which comprises at least two strip tillage, fertilization and sowing units of any one of the above items arranged side by side.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] 1. A seeder of the present invention, in which materials such as seeds and fertilizers can enter from the feed hole of the rectifying barrel under the drive of the airflow, and a part of the airflow driving the materials is discharged from the overflow channel. After losing a part of the driving force of the airflow, the movement speed of the materials will slow down, and the decelerated materials will be discharged from the discharge port along the inner wall of the rectifying barrel, the discharge is stable, and the sowing is more accurate.

[0022] The overflow pipe can move up and down relative to the rectifying barrel. The length of the overflow channel into the rectifying barrel will affect the discharge of the airflow. By changing the position of the overflow channel into the rectifying barrel, the amount and speed of the gas discharged from the overflow channel can be controlled, thereby changing the pressure in the rectifying barrel, adjusting the amount of material entering the rectifying barrel, and adjusting the sowing speed.

[0023] 2. The strip tillage, fertilization, and seeding machine of the present invention has the other end of the support arm tilted toward the end of the frame, so that the stubble wheel is pulled forward instead of pushed forward. The force applied by the support arm to the stubble disc is converted into an upward pulling force, which facilitates the installation of a buffer device on the support arm. When the stubble disc strikes a hard object such as a rock, the support arm and the straw-clearing wheel assembly are lifted upward, and the support arm rotates about the first connecting shaft. Under the pull of the support arm, the connecting rod pulls the first spring to stretch. When the stubble disc clears the obstacle, the first spring retracts and resets the support arm, protecting the machine from excessive impact force and extending the service life of the machine. The stubble disc clearing device is moved to the front end of the frame, so that it is not interfered with by the four-bar profiling mechanism. Regardless of the hardness of the soil, the stubble disc can penetrate deeply into the soil under the pressure of the machine.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0026] Figure 1 Schematic diagram of the structure of a seeder according to an embodiment of the present invention.

[0027] Figure 2 2 is a cross-sectional view of a seeder according to an embodiment of the present invention.

[0028] Figure 3 This is a front view of a strip tillage, fertilization and sowing unit according to an embodiment of the present invention.

[0029] Figure 4 It is a rear view of a strip tillage, fertilization and sowing unit according to an embodiment of the present invention.

[0030] Figure 5 Schematic diagram of the structure of a stubble breaking and straw clearing device according to an embodiment of the present invention.

[0031] Figure 6 Schematic diagram of the matching structure of the buffer device and the hinge plate according to an embodiment of the present invention.

[0032] Figure 7 Schematic diagram of the structure of a buffer device according to an embodiment of the present invention.

[0033] Figure 8 Schematic diagram of the structure of a four-bar profiling mechanism according to an embodiment of the present invention.

[0034] Figure 9 Schematic diagram of the structure of a deep loosening device according to an embodiment of the present invention.

[0035] Figure 10 Schematic diagram of the structure of a soil moisture dispersing and ridging device according to an embodiment of the present invention.

[0036] Figure 11 Schematic diagram of the structure of a pressing device and a moisture distributing and ridging device according to an embodiment of the present invention.

[0037] Among them: 1-rectifier barrel; 2-overflow pipe; 3-side wall; 4-top wall; 5-feed pipe; 51-feed port; 6-discharge port; 61-pipe; 7-spiral groove; 8-pipe sleeve; 9-stubble breaking and straw cleaning device; 10-frame; 11-four-bar profiling mechanism; 12-subsoiling device; 13-soil loosening and ridging device; 14-pressing device; 15-frame head end; 16-frame end end; 17-stubble breaking wheel; 18-support arm; 19-connecting rod; 20-first connecting shaft; 21-hinge plate; 22-spring seat; 23-first spring; 24-connecting bolt; 25-first straw cleaning wheel group; 26-first Second straw cleaning wheel group; 27-straw cleaning wheel connecting plate; 28-first straw cleaning wheel bracket; 29-first straw cleaning wheel; 30-upper connecting rod; 31-lower connecting rod; 32-guide rod; 33-second spring; 34-connecting device; 35-shovel handle; 36-shovel tip; 37-fertilizer discharge pipe; 38-first support pipe; 39-second support pipe; 40-third support pipe; 41-soil gathering plate bracket; 42-soil gathering plate; 43-width adjustment support; 44-suppression rod; 45-suppression wheel; 46-spring fixing block; 47-straw cleaning wheel fixing block; 48-first connecting plate group; 49-second connecting plate group; 50-spiral hole. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0039] like Figure 1 and Figure 2 As shown, a seeder according to an embodiment of the present invention includes a straightening barrel 1 and an overflow pipe 2. The straightening barrel 1 includes a side wall 3 and a top wall 4. The side wall 3 and the top wall form a closed space. The side wall 3 has a feed port 51 and a discharge port 6. The discharge port 6 is opposite to the top wall. The side wall 3 supports the movement of seeds.

[0040] The overflow pipe 2 is opened at both ends to form an overflow channel. One end of the overflow pipe 2 passes through the top wall and is inserted into the interior of the rectifying barrel 1 and can move up and down. The up and down movement of the overflow pipe 2 can adjust the speed at which the airflow in the rectifying barrel 1 is discharged from the overflow channel.

[0041] Optionally, the rectifying barrel 1 includes an upper part of the rectifying barrel 1 and a lower part of the rectifying barrel 1, the upper part of the rectifying barrel 1 is cylindrical, and the lower part of the rectifying barrel 1 is conical, the feed port 51 is arranged on the side wall 3 of the upper part of the rectifying barrel 1, and also includes a feed pipe 5, the feed port 51 is connected to the feed pipe 5, the feed port 51 and the feed pipe 5 are arranged at a position off-center of the rectifying barrel 1, so that the seeds can be close to the inner wall of the rectifying barrel 1 after entering from the feed pipe 5, preferably, the feed pipe 5 is tangent to the cylindrical surface of the upper part of the rectifying barrel 1, the discharge port 6 is arranged at the bottom of the lower part of the rectifying barrel 1, the discharge port 6 is arranged directly below the overflow pipe 2, the center of the overflow pipe 2 is opposite to the center of the discharge port 6, the discharge port 6 is a circular discharge port 6, two circular protrusions are arranged on the outer side wall 3 of the upper part of the rectifying barrel 1, when fixing, it is only necessary to wrap the fixing belt around the two circular protrusions to fix the rectifying barrel 1, which is convenient for fixation.

[0042] Driven by airflow, materials such as seeds and fertilizer enter the feed hole of the flow barrel 1. Part of this airflow propels the material through the overflow channel, while the remaining part exits through the discharge port 6. Once the material enters the flow barrel 1, the airflow within the flow barrel 1 causes the material to adhere to the inner wall of the flow barrel 1, causing it to rotate. Due to the force of gravity, the material then slides down the inner wall of the flow barrel 1 in a spiral trajectory to be discharged through the discharge port 6. A circular pipe 61 is provided at the lower end of the discharge port 6 to prevent material from splashing around at the discharge port 6, ensuring uniform airflow and improving discharge stability. Since part of the airflow exits the overflow channel, the material loses some of the airflow's propulsion and its speed slows. This decelerated material then flows along the inner wall of the flow barrel 1 and exits the discharge port 6. This results in smooth discharge, reduced contact speed with the ground, and less chance of bouncing, allowing for more precise sowing.

[0043] The overflow pipe 2 can move up and down relative to the rectifying barrel 1. The length of the overflow channel extending into the rectifying barrel 1 affects the discharge of airflow. The longer the overflow channel extends into the rectifying barrel 1, the more difficult it is for airflow to be discharged from the overflow channel, which increases the pressure in the seeder and reduces the amount of material entering. The shorter the overflow barrel channel extends into the rectifying barrel 1, the easier it is for airflow to be discharged from the overflow channel, which reduces the pressure in the seeder and increases the amount of material entering. By changing the depth of the overflow channel into the rectifying barrel 1, the amount and speed of air discharged from the overflow channel can be controlled, thereby adjusting the material sowing speed.

[0044] Specifically, the inner side of the side wall 3 is provided with a spiral groove 7 extending toward the discharge port 6. There are multiple spiral grooves 7, and the width of the spiral groove 7 is greater than the maximum diameter of the material, ensuring that the material can fit tightly in the spiral groove 7 and slide down to the discharge port 6 along the trajectory of the spiral groove 7.

[0045] Further, the top wall is provided with a pipe sleeve 8, and the overflow pipe 2 is matched with the pipe sleeve 8, and the up-down movement of the overflow pipe 2 is specifically that the overflow pipe 2 moves along the pipe sleeve 8, and the overflow pipe 2 is static relative to the pipe sleeve 8 during seeding.

[0046] As a preferred embodiment, the outer wall of the overflow pipe 2 is threadedly matched with the sleeve pipe, the overflow pipe 2 moves up and down in the sleeve pipe by rotating, and the length of the overflow pipe 2 inserted into the rectifying barrel 1 is adjusted. The overflow pipe 2 can also be matched with the sleeve pipe by means of a bolt, a plurality of insertion holes are arranged on the overflow pipe 2, a plurality of holes matched with the insertion holes are arranged on the sleeve pipe, and the overflow pipe 2 is matched with the sleeve pipe by means of the bolt. The diameter of the sleeve pipe is greater than the diameter of the overflow pipe 2.

[0047] The working principle of the seeder is as follows: the feeding inlet 51 of the seeder is connected with a seed feeding channel, the seed feeding channel continuously fills the airflow with seeds and fertilizers into the seeder through the feeding inlet 51, part of the airflow flows out of the overflow channel, the falling speed of the material is reduced, part of the airflow with the material seeds spirally slides along the inner wall of the rectifier to the discharge outlet 6 and flows out, the length of the overflow pipe 2 inserted into the rectifying barrel 1 is controlled, the amount and speed of the airflow discharged from the overflow channel are controlled, the pressure in the barrel is controlled, the feeding amount of the material is adjusted, the seeding or fertilizing speed is controlled, the adjustment is more convenient and simple, and the discharge is more uniform.

[0048] As shown in Figures 3 to 7 The strip tillage fertilization and seeding unit also discloses a strip tillage fertilization and seeding unit, which comprises the seeder of any one of the above, the seeder is installed on the seeding unit, and further comprises a stubble breaking and straw cleaning device 9, a frame 10, a four-bar linkage mechanism 11, a subsoiling device 12, a loosening and ridging device 13 and a pressing device 14, and the stubble breaking and straw cleaning device 9, the frame 10, the four-bar linkage mechanism 11, the subsoiling device 12, the seeder, the loosening and ridging device 13 and the pressing device 14 are sequentially connected.

[0049] The frame 10 is connected with a cart at one end, and the end away from the cart is a frame tail end 16, the stubble breaking and straw cleaning device 9 comprises a stubble breaking wheel 17, a supporting arm 18 and a buffer device, the stubble breaking wheel 17 is installed at one end of the supporting arm 18, the other end of the supporting arm 18 is connected with the buffer device, the buffer device is connected with the frame head end 15, and the buffer device comprises:

[0050] a connecting rod 19, a first connecting shaft 20, a hinged plate 21, a spring seat 22, a first spring 23 and a connecting bolt 24, the connecting bolt 24 is sequentially connected with the spring seat 22, the first spring 23 and the hinged plate 21, one end of the connecting rod 19 is hinged with the connecting bolt 24, the other end of the connecting rod 19 is hinged with the other end of the supporting arm 18, and the other end of the supporting arm 18 is hinged with the hinged plate 21 through the first connecting shaft 20.

[0051] The frame 10 is arranged horizontally, and one end of the support arm 18 is inclined toward the end of the frame 16, and the angle between the support arm 18 and the frame is less than ninety degrees.

[0052] The specific articulation method of the connecting rod 19 and the connecting bolt 24 is that a thread is set at one end of the connecting bolt 24, there are two straw cleaning wheel connecting plates 27, and it also includes a spring fixing block 46, and connecting shafts are set at both ends of the spring fixing block 46. The spring fixing block 46 is set between the two straw cleaning wheel connecting plates 27, and the other end of the support arm 18 is set between the two straw cleaning wheel connecting plates 27. The connecting shafts at both ends of the spring fixing block 46 are respectively connected to a straw cleaning wheel connecting plate 27, and the connecting shaft is rotatably connected to the straw cleaning wheel connecting plate 27. The connecting shaft can rotate on the straw cleaning wheel connecting plate 27, one end of the connecting bolt 24 is threadedly connected to the spring fixing block 46, and the other end of the connecting bolt 24 is connected to the spring seat 22. The degree of spring compression is adjusted by adjusting the depth of the connecting bolt 24 screwed into the spring fixing block 46.

[0053] When the stubble disc is moved over the obstacle, the spring seat 22 moves to the side away from the connecting rod under the action of the spring, so that the stubble disc is reset and the operation continues.

[0054] The buffer device avoids excessive force on the support arm 18 and improves the service life of the machine. At the same time, the stubble breaking and straw cleaning device 9 is arranged at the head end of the frame, so that it is not affected by the four-bar profiling mechanism 11. Regardless of the hardness of the soil, the stubble breaking disc can penetrate into the soil under the pressure of the machine.

[0055] Different types of stubble discs can be flexibly replaced according to the soil environment. Generally, a round stubble disc with low production cost can be selected; when the soil is too hard, a toothed stubble disc with sharp-angled bevel teeth can be selected. This tooth shape has low resistance to soil penetration and is easier to cut through hard soil; when there is a large amount of straw on the ground, a notched stubble disc can be selected. This stubble disc has a circle of circular notches on the edge, which can reduce the slippage of straw and thus achieve effective cutting of straw.

[0056] Pulled by a tractor, the tractor moves forward along the seedling strip, where the stubble-breaking disc breaks up the crop residue, facilitating subsequent cleaning by the stubble knife, which sweeps the residue to both sides of the seedling strip. The subsoiling device 12 then penetrates the cleared seedling strip for subsoiling, simultaneously applying fertilizer or seeds to the soil. The four-bar profiling mechanism 11 effectively ensures consistent tillage depth. After subsoiling, the soil-collecting disc gathers the soil, which is then compacted by the compacting device 14, ultimately forming an ideal seedling strip.

[0057] Specifically, it also includes a straw cleaning wheel assembly, which includes a first straw cleaning wheel group 25, a second straw cleaning wheel group 26 and a straw cleaning wheel connecting plate 27; the first straw cleaning wheel group 25 is connected to the second straw cleaning wheel group 26 through the straw cleaning wheel connecting plate 27, and a stubble breaking wheel 17 is arranged between the first straw cleaning wheel group 25 and the second straw cleaning wheel group 26. The first straw cleaning wheel group 25 and the second straw cleaning wheel group 26 are parallel to the support arm 18. The first straw cleaning wheel group 25 includes:

[0058] The first straw cleaning wheel bracket 28 and the first straw cleaning wheel 29, a straw cleaning wheel is set at one end of the first straw cleaning wheel 29, one end of the first straw cleaning wheel 29 is also fixedly connected to the support arm 18, and the other end of the first straw cleaning wheel 29 is rotatably connected to the connecting shaft.

[0059] The second straw cleaning wheel group 26 includes a second straw cleaning wheel and a second straw cleaning wheel bracket. The second straw cleaning wheel is provided at one end of the second straw cleaning wheel bracket, and the other end of the second straw cleaning wheel bracket is fixedly connected to the straw cleaning wheel connecting plate 27.

[0060] Specifically, the present invention further includes a central shaft, one end of which passes through the center of the support arm 18 and the stubble breaking wheel 17, connecting the support arm 18 and the stubble breaking wheel 17 together, the other end of the support shaft is connected to the straw cleaning wheel fixing block 47, the straw cleaning wheel fixing block 47 is connected to the first straw cleaning wheel bracket 28, and the straw cleaning wheel fixing block 47 fixes the first straw cleaning wheel bracket 28 to the support arm 18. The present invention further includes a straw cleaning wheel fixing shaft, one end of which is fixed to the first straw cleaning wheel 29, and the other end of the straw cleaning wheel fixing shaft extends toward the stubble breaking wheel 17 and blocks the upper surface of the support arm 18. Through the above structure, when the support arm 18 is lifted, the first straw cleaning wheel bracket 28 is lifted synchronously, the first straw cleaning wheel bracket 28 is connected to the second straw cleaning wheel bracket via the straw cleaning wheel connecting plate 27, and the first straw cleaning wheel bracket 28 drives the second straw cleaning wheel bracket to rotate synchronously via the straw cleaning wheel connecting plate 27.

[0061] Further, such as Figure 8As shown, the four-bar contouring mechanism 11 includes an upper link 30, a lower link 31, a guide rod 32, a second spring 33 and a connecting device 34. One end of the upper link 30 and one end of the lower link 31 are respectively connected to the connecting device 34, the other end of the upper link 30 and the other end of the lower link 31 are respectively connected to the frame end 16, one end of the guide rod 32 is connected to the frame 10, and the other end of the guide rod 32 is connected to the lower link 31 through the second spring 33.

[0062] The upper connecting rod 30 and the lower connecting rod 31 are hinged to the end of the frame, and the upper connecting rod 30 and the lower connecting rod 31 are hinged to the connecting device 34. The upper connecting rod 30 and the lower connecting rod 31 are arranged in parallel, and there are two upper connecting rods 30 and two lower connecting rods 31. The upper connecting rod 30 and the lower connecting rod 31 also include a guide rod 32 shaft 47. One end of the guide rod 32 is connected to the end of the frame, and one end of the guide rod 32 can move up and down in a vertical direction relative to the frame. The other end of the guide rod 32 is rotatably connected to the guide rod shaft, that is, the guide rod 32 can rotate about the guide rod shaft. One end of the guide rod shaft is perpendicularly connected to one lower connecting rod 31, and the other end of the guide rod shaft is perpendicularly connected to the other lower connecting rod 31. The second spring 33 is a compression spring.

[0063] Through the above-described structural arrangement, the connecting device 34 can move up and down relative to the frame. One end of the four-bar contouring mechanism 11 is fixedly connected to the frame, and the other end is connected to the connecting device 34. Driven by the pressing wheel 45, the connecting device 34 can move up and down with the undulations of the ground surface, thereby ensuring the consistency of the tillage depth. A guide rod 32 is fixed between the lower connecting rod 31 and the end 16 of the frame, and a second spring 33 is installed on the guide rod 32. This replaces the original installation method of the pull plate, tension spring, and compression spring. There is enough space to install a larger spring, thereby reducing the number of springs. At the same time, the second spring 33 is more convenient for disassembly and assembly.

[0064] Specifically, such as Figure 9 As shown, the deep loosening device 12 includes a shovel handle 35, a shovel tip 36 and a fertilizer discharge pipe 37. One end of the shovel handle 35 is connected to the connecting device 34, and the other end of the shovel handle 35 is connected to the shovel tip 36 and the fertilizer discharge pipe 37 respectively.

[0065] The shovel handle 35 is provided with a plurality of shovel handle holes, which are connected to the connecting device 34 via studs. The connecting device 34 includes two parallel first connecting plate groups 48 and two parallel second connecting plate groups 49. The second connecting plate groups 49 are hingedly connected to the four-bar contour mechanism 11 via the first connecting plate groups 48. The second connecting plate groups 49 are hingedly connected to the first connecting plate groups 48. The second connecting plate groups 49 include two parallel second connecting plates, and the first connecting plate groups 48 include two parallel first connecting plates.

[0066] One end of the shovel handle 35 is arranged between the two second connecting plates and connected to the two second connecting plates. The shovel tip 36 is connected to the other end of the shovel handle 35 by bolts. The bolt connection enables flexible replacement of the shovel tip 36 to meet different deep plowing needs. At the same time, a fertilizer pipe 37 is welded at the other end of the deep plowing shovel for fertilizing and sowing.

[0067] Further, such as Figure 10 As shown, the soil moisture dispersing and ridging device 13 includes a support frame, a soil collecting plate support 41, a soil collecting plate 42 and a width adjustment support 43. The support frame includes a first support tube 38, a second support tube 39 and a third support tube 40 connected in sequence. The width adjustment support 43 includes a support sleeve and an adjustment tube. The support sleeve is vertically connected to the adjustment tube. One end of the soil collecting plate support 41 is inserted into the support sleeve, and the other end of the soil collecting plate support 41 is connected to the soil collecting plate 42. The adjustment tube is inserted into the first support tube 38. A seeder is provided above the second support tube 39. A plurality of spiral holes 50 are provided on the support along a spiral trajectory. A plurality of connecting holes in the vertical direction are provided on the soil collecting plate support 41. The connecting holes cooperate with the spiral holes 50. The soil collecting plate support 41 is fixed to the sleeve by bolts or pins.

[0068] A moisture distribution and ridging device 13 is installed on both sides of the second connecting plate group 49. The support sleeve is a circular tube. The first support tube 38, the second support tube 39, the third support tube 40 and the adjustment tube are square tubes.

[0069] In a preferred embodiment, three connection holes are provided, with pins securing the support sleeve and the soil collecting disc support 41. By adjusting the relative position of the support sleeve and the soil collecting disc support 41, the tilt angle of the soil collecting disc 42 can be varied to meet different soil collecting requirements. The adjustment tube is provided with multiple adjustment holes, and the first support tube 38 is provided with a first support tube 38 hole that corresponds to the adjustment tube hole. The adjustment hole and the first support tube 38 hole are connected by a pin. By adjusting the depth of the adjustment tube inserted into the first support tube 38, the position of the soil collecting disc along the first support tube 38 can be adjusted, thereby improving the flexibility of the machine.

[0070] Optional, such as Figure 11 As shown, the pressing device 14 includes a pressing rod 44 and a pressing wheel 45 . One end of the pressing rod 44 is inserted into the third support tube 40 , and the other end of the pressing rod 44 is connected to the pressing wheel 45 .

[0071] In a preferred embodiment, a material rectifier is installed on the second branch pipe, and the seeds or fertilizers can enter the material rectifier from the side hole of the rectifying barrel 1 under the driving of the airflow, and then the materials rotate along the inner wall of the rectifying barrel 1 under the driving of the airflow, the spiral groove 7 with a spiral downward direction on the inner wall of the rectifying barrel 1 can assist the rotation of the seeds or fertilizers to move downward, and the airflow driving the seeds can be discharged through the overflow channel, and the movement speed of the seeds or fertilizers will slow down after the airflow is discharged, and the slowed-down seeds or fertilizers can be transported to the rear side of the deep tillage device 12 through the lower channel of the rectifying barrel 1, and then be applied to the land, so that the seeds or fertilizers are not splashed due to too high speed, and the fertilization or seeding is more stable.

[0072] According to different soil humidity and viscosity, the rubber roller 45, the rib roller 45, and the grid roller 45 can be used respectively to meet different operation requirements. When the soil humidity and viscosity are too large, the rib roller 45 can be selected; when the soil humidity and viscosity are general, the grid roller 45 can be selected; when the soil is dry and lacks viscosity, the rubber roller 45 can be selected; and if the soil is still seriously attached to the rib roller 45, the chain roller 45 can be used, so that a good rolling effect is achieved while avoiding soil attachment to the machine.

[0073] The application further discloses a strip tillage fertilization and seeding machine, which comprises at least two strip tillage fertilization and seeding monomers arranged side by side.

[0074] The strip tillage fertilization and seeding machine changes the other end of the support arm 18 to be inclined to the end 16 of the machine frame, changes the pushing forward of the stubble removing wheel 17 to pulling forward, changes the force applied by the support arm 18 to the stubble removing disc to be an upward oblique pulling force, facilitates the installation of a buffer device for the support arm 18, lifts the support arm 18 and the straw cleaning wheel assembly upward when the stubble removing wheel 17 touches hard objects such as rocks, rotates the support arm 18 around the connecting shaft, pulls the first spring 23 to stretch under the pulling of the support arm 18, resets the support arm 18 under the contraction of the first spring 23 after the stubble removing wheel 17 passes the obstacle, avoids the machine body from being subjected to a too large impact force, and improves the service life of the machine.

[0075] Although the embodiments of the application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and should not be construed as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments without departing from the principles and purposes of the application within the scope of the application. The scope of the application is defined by the appended claims and their equivalents.

Claims

1. A seeder, characterized in that: The device comprises a rectifying barrel and an overflow pipe, wherein the rectifying barrel comprises a side wall and a top wall, wherein the side wall and the top wall form a closed space, wherein the side wall is provided with a feed port and a discharge port, wherein the discharge port is opposite to the top wall, and wherein the side wall supports the movement of the seeds; The overflow pipe is open at both ends to form an overflow channel. One end of the overflow pipe penetrates the top wall and is inserted into the interior of the rectifying barrel and can move up and down to change the position of the overflow channel extending into the rectifying barrel, thereby changing the pressure in the rectifying barrel and adjusting the amount of material entering the rectifying barrel. The up and down movement of the overflow pipe can adjust the speed at which the airflow in the rectifying barrel is discharged from the overflow channel; The inner side of the side wall is provided with a spiral groove extending toward the discharge port; A pipe sleeve is provided on the top wall, and the overflow pipe cooperates with the pipe sleeve. The up and down movement of the overflow pipe is specifically that the overflow pipe moves along the pipe sleeve, and the overflow pipe is stationary relative to the pipe sleeve during sowing; The rectifying barrel includes an upper part and a lower part of the rectifying barrel. The upper part of the rectifying barrel is cylindrical and the lower part of the rectifying barrel is conical. The feed port is arranged on the side wall of the upper part of the rectifying barrel. It also includes a feed pipe. The feed port is connected to the feed pipe. The feed port and the feed pipe are arranged at a position off-center of the rectifying barrel so that the seeds can stick to the inner wall of the rectifying barrel after entering from the feed pipe. The feed pipe is tangent to the cylindrical surface of the upper part of the rectifying barrel. The discharge port is arranged at the bottom of the lower part of the rectifying barrel. The discharge port is arranged directly below the overflow pipe, and the center of the overflow pipe is opposite to the center of the discharge port. The material enters the rectifying barrel from the feed port driven by the airflow.

2. A strip tillage, fertilization and sowing unit, characterized in that: The device comprises the seeder according to claim 1, wherein the seeder is mounted on the sowing unit, and further comprises a stubble-breaking and straw-clearing device, a frame, a four-bar profiling mechanism, a deep loosening device, a moisture-distributing and ridging device, and a pressing device, wherein the stubble-breaking and straw-clearing device, the frame, the four-bar profiling mechanism, the deep loosening device, the seeder, the moisture-distributing and ridging device, and the pressing device are connected in sequence; The end of the frame connected to the pulling cart is the frame head end, and the end of the frame away from the pulling cart is the frame tail end. The stubble breaking and straw clearing device includes a stubble breaking wheel, a support arm and a buffer device. The stubble breaking wheel is installed at one end of the support arm, and the other end of the support arm is connected to the buffer device. The buffer device is connected to the head end of the frame, and the buffer device includes: a connecting rod, a first connecting shaft, a hinge plate, a spring seat, a first spring, and a connecting bolt, wherein the connecting bolt sequentially connects the spring seat, the first spring, and the hinge plate in series, one end of the connecting rod is hinged to the connecting bolt, the other end of the connecting rod is hinged to the other end of the support arm, and the other end of the support arm is hinged to the hinge plate via the first connecting shaft; The frame is arranged horizontally, one end of the support arm is inclined toward the end of the frame, and the angle between the support arm and the frame is less than ninety degrees.

3. The strip tillage, fertilization and sowing unit according to claim 2, characterized in that: It also includes a straw cleaning wheel assembly, the straw cleaning wheel assembly includes a first straw cleaning wheel group, a second straw cleaning wheel group and a straw cleaning wheel connecting plate; the first straw cleaning wheel group is connected to the second straw cleaning wheel group through the straw cleaning wheel connecting plate, the stubble breaking wheel is arranged between the first straw cleaning wheel group and the second straw cleaning wheel group, the first straw cleaning wheel group and the second straw cleaning wheel group are parallel to the support arm, and the first straw cleaning wheel group includes: A first straw cleaning wheel bracket and a first straw cleaning wheel, wherein the straw cleaning wheel is arranged at one end of the first straw cleaning wheel, one end of the first straw cleaning wheel is also fixedly connected to the support arm, and the other end of the first straw cleaning wheel is rotatably connected to the connecting shaft.

4. The strip tillage fertilization and sowing unit according to claim 2, characterized in that: The four-bar profiling mechanism includes an upper connecting rod, a lower connecting rod, a guide rod, a second spring and a connecting device, one end of the upper connecting rod and one end of the lower connecting rod are respectively connected to the connecting device, the other end of the upper connecting rod and the other end of the lower connecting rod are respectively connected to the frame, one end of the guide rod is connected to the frame, and the other end of the guide rod is connected to the lower connecting rod through the second spring.

5. The strip tillage, fertilization and sowing unit according to claim 4, characterized in that: The deep loosening device includes a shovel handle, a shovel tip and a fertilizer discharge pipe. One end of the shovel handle is connected to the connecting device, and the other end of the shovel handle is connected to the shovel tip and the fertilizer discharge pipe respectively.

6. The strip tillage fertilization and sowing unit according to claim 5, characterized in that: The moisture dispersing and ridge-forming device includes a support frame, a soil gathering plate support, a soil gathering plate and a width adjustment support, the support frame includes a first support tube, a second support tube and a third support tube connected in sequence, the width adjustment support includes a support sleeve and an adjustment tube, the support sleeve is vertically connected to the adjustment tube, one end of the soil gathering plate support is inserted into the support sleeve, the other end of the soil gathering plate support is connected to the soil gathering plate, the adjustment tube is inserted into the first support tube, the seeder is provided above the second support tube, and a plurality of spiral holes are opened on the support sleeve along a spiral trajectory.

7. The strip tillage, fertilization and sowing unit according to claim 6, characterized in that: The pressing device includes a pressing rod and a pressing wheel. One end of the pressing rod is inserted into the third support tube, and the other end of the pressing rod is connected to the pressing wheel.

8. A complete strip tillage, fertilization and sowing machine, comprising at least two side-by-side strip tillage, fertilization and sowing units according to any one of claims 2 to 7.

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