A seed drill

Abstract

The seed drill of the present invention comprises a frame, a furrow opener, a plowshare, a forward-rotating blade shaft, a reverse-rotating blade shaft, a transmission unit, a seed tube, a seed storage tank, a fertilizer storage tank and a medicine storage tank, wherein the seed storage tank, the fertilizer storage tank and the medicine storage tank are respectively mounted on the frame, and the reverse-rotating blades are arranged on both sides of the forward-rotating blade shaft corresponding to the outer sides of the two tires of the seed drill, and the forward-rotating blades are arranged corresponding to the inner sides of the two tires of the seed drill, and the pitch of the forward-rotating blades increases step by step from the two sides to the corresponding pitch in the middle; the forward-rotating blade shaft and the reverse-rotating blade shaft are rotatably supported on the frame through the transmission unit, and the plowshare and the furrow opener are arranged at the bottom of the frame. Beneficial effect: The combination of multi-pitch left-curved rotary tillage blades is used to quickly distribute the soil opened by the furrow opener while taking into account the combing of tire marks to avoid excessive soil compaction, and then the right-curved rotary tillage blade arranged on the outer side of the tire prevents the multi-pitch left-curved rotary tillage blade from accumulating too much soil on the side plate of the seed drill, resulting in an uneven bed surface.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a seeder. Background Art

[0002] Currently, forward and reverse rotation seeders are used to deal with poor soil moisture conditions, and conventional compound seeders have problems with inconsistent sowing depths.

[0003] On the other hand, there is no soil leveling device between the existing forward and reverse rotary blade shafts. After the forward rotary blade shaft is operated, the surface of the ridge is uneven, and the amount of soil thrown by the reverse rotary blade is uneven, which indirectly affects the soil covering effect. The seeding tube is far away from the reverse rotary blade, and a large amount of soil is easily accumulated between the seeding tubes due to the entangled mesh weeds, thus forming a soil barrier wall, which affects the seed covering effect.

[0004] The existing forward-rotating cutter shaft and reverse-rotating cutter shaft have fixed structures, so the transmission ratio between the forward-rotating cutter shaft and the reverse-rotating cutter shaft cannot be adjusted, and the height of the reverse-rotating cutter shaft from the ground cannot be adjusted. When there is no high requirement for the tillage depth, power waste will be caused. Summary of the invention

[0005] The present invention aims to overcome the above-mentioned deficiencies of the prior art and provides a seed drill, which is specifically implemented by the following technical solutions:

[0006] The seeder includes a frame, a furrow opener, a plowshare, a forward-rotating cutter shaft, a reverse-rotating cutter shaft, a transmission unit, a seed tube, a seed storage tank, a fertilizer storage tank and a medicine storage tank, wherein the seed storage tank, the fertilizer storage tank and the medicine storage tank are respectively installed on the frame, and reverse-rotating cutters are provided on both sides of the forward-rotating cutter shaft corresponding to the outer sides of the two tires of the seeder, and forward-rotating cutters are provided on the inner sides of the two tires of the seeder, and the pitches of the forward-rotating cutters and the reverse-rotating cutters increase step by step from the two sides of the forward-rotating cutter shaft to the corresponding pitches in the middle; the forward-rotating cutter shaft and the reverse-rotating cutter shaft are driven by the transmission unit and rotatably supported on the frame, and the plowshare and the furrow opener are arranged at the bottom of the frame.

[0007] The further design of the seed drill is that the pitch of the positive rotary cutter increases step by step from the two sides to the middle, and the positive rotary cutter shaft is divided into three pitch step distribution intervals, which are:

[0008] In the large pitch area, corresponding to the position from the furrow opener to the inner side of the tire, a left-curved rotary tiller is installed to quickly distribute the soil opened by the furrow opener;

[0009] In the medium pitch range, corresponding to the position from the inner side of the tire to the outer side of the tire, a left-curved rotary tiller is installed to comb the tire marks;

[0010] In the small pitch section, corresponding to the position between the outer side of the tire and the side plate of the seeder, a right-curved rotary tiller is installed to prevent excessive soil pushed in the first two pitch sections from being accumulated on the side plate of the seeder.

[0011] The further design of the seeder is that the pitch setting interval of the left-curved rotary tiller in the large pitch interval is [400mm, 420mm], the pitch setting interval of the left-curved rotary tiller in the medium pitch interval is [345mm, 365mm], and the pitch setting interval of the left-curved rotary tiller in the small pitch interval is [285mm, 305mm].

[0012] A further design of the seeder is that the seeding pipe is a steel pipe, and the end of the seeding pipe on one side of the discharge port is curved.

[0013] A further design of the seeder is that the seed placement tube is arranged closely to the counter-rotating cutter shaft, and the curved portion of the seed placement tube is an arc-shaped tube arranged concentrically with the counter-rotating cutter shaft.

[0014] A further design of the seeder is that the feed port of the seed placement tube is connected to the seed storage tank through a non-bent hose.

[0015] A further design of the seeder is that the transmission unit includes a driving sprocket, a driven sprocket and a gearbox, the driving sprocket and the driven sprocket are connected by a chain transmission, and the driving sprocket and the driven sprocket are respectively connected to the forward rotating cutter shaft and the reverse rotating cutter shaft through a gearbox.

[0016] A further design of the seeder is that the counter-rotating cutter shaft and the driven sprocket form an integrated structure through a suspension bracket, the suspension bracket is detachably mounted on the frame, and the seed tube is fixedly connected to the suspension bracket.

[0017] A further design of the seed drill is that it also includes a reverse-rotating cutter shaft baffle, and the reverse-rotating cutter shaft baffle is fixed on the suspension.

[0018] A further design of the seeder is that it also includes a support that is telescopic in the horizontal direction, and a spray head is provided on the telescopic support, and the spray head is connected to the medicine storage tank.

[0019] The advantages of the present invention are as follows:

[0020] The seeder of the present invention adopts a combination of multi-pitch left-curved rotary tillers to quickly distribute the soil opened by the furrow opener while combing the tire marks to avoid excessive soil compaction. The right-curved rotary tiller arranged on the outer side of the tire prevents the multi-pitch left-curved rotary tiller from pressing too much soil on the side plate of the seeder, resulting in an uneven bed surface.

[0021] On the other hand, the seeder of the present invention discharges seeds in the tangential direction of the counter-rotating blade shaft through the steel seed tube with a bent end face while ensuring that it is not blocked, thereby avoiding as much as possible the interference of the falling soil turned up by the rotary blade on the falling of the seeds, thereby ensuring the consistency of the sowing depth as much as possible.

[0022] Furthermore, the reverse-rotating cutter shaft and its transmission device of the seeder of the present invention are an integrated structure, which facilitates the adjustment of the height and rotation rate of the reverse-rotating cutter shaft, and the seed tube is also arranged in the integrated structure to maximize the consistency of the sowing depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a forward schematic diagram of the seed drill.

[0024] Figure 2 for Figure 1 AA section view of the front schematic view of the seed drill shown.

[0025] Figure 3 Schematic diagram of the three-dimensional structure of the seed drill.

[0026] Figure 4 This is a schematic diagram of the right side of the rotating cutter shaft.

[0027] Figure 5 It is a structural diagram of the transmission unit. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings.

[0029] like Figure 1 , Figure 2 as well as Figure 3 The seed drill of this embodiment mainly consists of: a frame 1, a furrow opener 8, a plowshare, a forward-rotating blade shaft 3, a reverse-rotating blade shaft 9, a transmission unit 10, a seed tube 7, a seed storage tank 4, a fertilizer storage tank 5, a pressure roller 10 and a medicine storage tank 6. The seed storage tank 4, the fertilizer storage tank 5 and the medicine storage tank 6 are respectively installed on the frame 1. The two sides of the forward-rotating blade shaft 3 are provided with reverse-rotating blades (i.e., the right-bending rotary tillage blades described later) corresponding to the outer sides of the two tires of the seed drill; the inner sides of the two tires of the seed drill are provided with forward-rotating blades (i.e., the left-bending rotary tillage blades described later), and the pitches of the forward-rotating blades and the reverse-rotating blades are gradually increased from the two sides of the forward-rotating blade shaft to the corresponding pitches in the middle; the forward-rotating blade shaft and the reverse-rotating blade shaft are driven by the transmission unit and rotatably supported on the frame, and the plowshare 2, the furrow opener 8 and the pressure roller 10 are arranged at the bottom of the frame. The bottom position of the frame 1 where the furrow opener 8 is located corresponds to the middle position of the forward-rotating blade shaft 3.

[0030] The pitch of the positive rotary cutter in this embodiment increases step by step from the two sides to the middle, and the positive rotary cutter axis is divided into three pitch step distribution intervals, which are:

[0031] In the large pitch area, which corresponds to the position from the furrow opener to the inner side of the tire, a left-curved rotary tiller is installed to quickly distribute the soil opened by the furrow opener.

[0032] In the medium pitch range, corresponding to the position from the inside to the outside of the tire, a left-curved rotary tiller is installed to comb the tire marks.

[0033] In the small pitch section, corresponding to the position between the outer side of the tire and the side plate of the seeder, a right-curved rotary tiller is installed to prevent excessive soil pushed in the first two pitch sections from being accumulated on the side plate of the seeder.

[0034] like Figure 4 , the pitch ratio of the large pitch interval a, the medium pitch interval b and the small pitch interval c is controlled at (1.3-1.5): (1.1-1.3): 1. Alternatively, it is set as: the pitch setting interval of the left-curved rotary tiller blade in the large pitch interval is [400mm, 420mm], the pitch setting interval of the left-curved rotary tiller blade in the medium pitch interval is [345mm, 365mm], and the pitch setting interval of the left-curved rotary tiller blade in the small pitch interval is [285mm, 305mm]. In this embodiment, the best implementation method is adopted: the best ratio of the pitches of the large pitch interval a, the medium pitch interval b and the small pitch interval c is controlled at 1.4:1.2:1.

[0035] The seeding tube 7 of this embodiment is made of a steel tube, and the end of the discharge port of the seeding tube 7 is curved. The seeding tube is arranged close to the reverse rotary blade shaft. The curved portion of the seeding tube 7 in this embodiment is an arc tube arranged concentrically with the reverse rotary blade shaft 9, so that the seeding direction of the seeding tube 7 is as consistent as possible with the falling direction of the soil turned up by the reverse rotary blade shaft 9, thereby avoiding the collision of seeds with soil particles in the air to the greatest extent, thereby affecting the consistency of sowing depth. On the other hand, the fertilizer pipe of the seeder in this embodiment is arranged in the same direction as that of the existing seeder, and is arranged vertically on the frame in an alternating manner with the seeding tube.

[0036] Compared with the vertical setting of the existing seed placement tube 7, the seed placement tube of this embodiment is inclined, and the feed port of the seed placement tube is connected to the seed storage tank through a non-bent hose (not shown in the figure). This setting can completely avoid the phenomenon of seeds being stuck by the front hose (bent) of the existing seed placement tube.

[0037] like Figure 5 The transmission unit 10 of this embodiment is mainly composed of a driving sprocket 102, a driven sprocket 101 and a gearbox. The driving sprocket 102 and the driven sprocket 101 are connected by a chain 103. The driving sprocket 102 and the driven sprocket 101 are connected by a gearbox to the positive rotation cutter shaft 3 and the reverse rotation cutter shaft 9 respectively.

[0038] The reverse-rotating blade shaft 9 and the driven sprocket 101 form an integrated structure through a suspension bracket 104. The suspension bracket 104 can be detachably mounted on the frame 1. The seed tube 7 is fixedly connected to the suspension bracket 104, which maximizes the adjustment accuracy during the adjustment operation, avoids the difference in height position caused by adjusting the seed tubes one by one, and ensures the consistency of the sowing depth.

[0039] The seed drill of this embodiment also includes a reverse-rotating cutter shaft baffle, which is also fixed on the suspension, thereby simplifying the operation of adjusting the height and rotation rate of the reverse-rotating cutter shaft.

[0040] The planter of this embodiment further comprises a telescopic support 7 which is telescopic in the horizontal direction, and a nozzle is arranged on the telescopic support 7, and the nozzle is connected to the medicine storage tank 6. Sensors and remote communication equipment can be arranged on the telescopic support 7, and the operator can remotely control or automatically operate the telescopic support 7.

[0041] The seed drill of this embodiment adopts a combination of multi-pitch left-curved rotary tillers to quickly distribute the soil opened by the furrow opener while combing the tire marks to avoid excessive soil compaction. The right-curved rotary tiller arranged on the outside of the tire prevents the multi-pitch left-curved rotary tiller from pressing too much soil on the side plate of the seed drill, resulting in an uneven bed surface.

[0042] On the other hand, the seeder of the present invention discharges seeds in the tangential direction of the counter-rotating blade shaft through the steel seed tube with a bent end face while ensuring that it is not blocked, thereby avoiding as much as possible the interference of the falling soil turned up by the rotary blade on the falling of the seeds, thereby ensuring the consistency of the sowing depth as much as possible.

[0043] Furthermore, the reverse-rotating cutter shaft and its transmission device of the seeder of the present invention are an integrated structure, which facilitates the adjustment of the height and rotation rate of the reverse-rotating cutter shaft, and the seed tube is also arranged in the integrated structure to maximize the consistency of the sowing depth.

[0044] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A seed drill, characterized in that It includes a frame, a furrow opener, a plowshare, a forward-rotating cutter shaft, a reverse-rotating cutter shaft, a transmission unit, a seed tube, a seed storage tank, a fertilizer storage tank and a medicine storage tank, wherein the seed storage tank, the fertilizer storage tank and the medicine storage tank are respectively installed on the frame, and reverse-rotating cutters are provided on both sides of the forward-rotating cutter shaft corresponding to the outer sides of the two tires of the seeder, and forward-rotating cutters are provided on the inner sides of the two tires of the seeder, and the pitches of the forward-rotating cutters and the reverse-rotating cutters increase step by step from the two sides of the forward-rotating cutter shaft to the corresponding pitches in the middle; the forward-rotating cutter shaft and the reverse-rotating cutter shaft are driven by the transmission unit and rotatably supported on the frame, and the plowshare and the furrow opener are arranged at the bottom of the frame.

2. The seed drill according to claim 1, characterized in that The bottom position of the frame where the furrow opener is located corresponds to the middle position of the positive rotary cutter shaft. The pitch of the positive rotary cutter increases step by step from both sides to the middle, dividing the positive rotary cutter shaft into three pitch step distribution intervals, which are: In the large pitch area, corresponding to the position from the furrow opener to the inner side of the tire, a left-curved rotary tiller is installed to quickly distribute the soil opened by the furrow opener; In the medium pitch range, corresponding to the position from the inner side of the tire to the outer side of the tire, a left-curved rotary tiller is installed to comb the tire marks; In the small pitch section, corresponding to the position between the outer side of the tire and the side plate of the seeder, a right-curved rotary tiller is installed to prevent excessive soil pushed in the first two pitch sections from being accumulated on the side plate of the seeder.

3. The seed drill according to claim 1, characterized in that The pitch setting range of the left-curved rotary tiller blade in the large pitch range is [400mm, 420mm], the pitch setting range of the left-curved rotary tiller blade in the medium pitch range is [345mm, 365mm], and the pitch setting range of the left-curved rotary tiller blade in the small pitch range is [285mm, 305mm].

4. The seed drill according to claim 1, characterized in that The seed lowering pipe is a steel pipe, and the end portion of the seed lowering pipe on one side of the material outlet is curved.

5. The seed drill according to claim 4, characterized in that The seed lowering tube is arranged closely to the reverse rotating cutter shaft, and the curved part of the seed lowering tube is an arc-shaped tube arranged concentrically with the reverse rotating cutter shaft.

6. The seed drill according to claim 4, characterized in that The feed port of the seed placement pipe is connected to the seed storage tank through a non-bending hose.

7. The seed drill according to claim 1, characterized in that The transmission unit comprises a driving sprocket, a driven sprocket and a gearbox. The driving sprocket and the driven sprocket are connected through a chain transmission. The driving sprocket and the driven sprocket are respectively connected to the forward rotating cutter shaft and the reverse rotating cutter shaft through a gearbox.

8. The seed drill according to claim 7, characterized in that The counter-rotating cutter shaft and the driven sprocket wheel form an integrated structure through a suspension bracket. The suspension bracket is detachably mounted on the frame, and the seed lowering pipe is fixedly connected to the suspension bracket.

9. The seed drill according to claim 8, characterized in that It also includes a reverse-rotating cutter shaft baffle, which is fixed on the suspension bracket.

10. The seed drill according to claim 9, characterized in that It also includes a bracket that can be extended and retracted in the horizontal direction. The bracket is provided with a spray head, and the spray head is connected to the medicine storage tank.

Images