Seed guiding and ditching mechanism

Abstract

The invention relates to agricultural machinery, in particular to a seed guiding and ditching mechanism. A gap exists between the two seed guide plates, the outlet end of the seed guide pipe is located between the two seed guide plates, the inlet end of the seed guide pipe is located in front of the outlet end of the seed guide pipe, the seed guide pipe is in a cycloid shape, the upper end of the seed guide pipe is connected with an air inlet pipe, and flowing gas is filled into the seed guide pipe through the air inlet pipe. The furrowing, seed guiding and soil covering are integrated, a proper seed guiding track and a proper furrow shape are formed, it is guaranteed that seeds fall at zero speed, bounce is prevented, and the uniformity of the seeding grain distance is guaranteed.

Description

Technical Field

[0001] The invention relates to agricultural machinery, in particular to a seed guiding and furrowing mechanism. Background Art

[0002] Sowing is a crucial link in the vegetable production process. It is labor-intensive and accounts for about 30-40% of the entire operation. The quality of sowing directly affects the production cost, yield and quality of vegetables. With the rise and development of agricultural machinery, higher requirements have been placed on the accuracy and uniformity of sowing. The main component that affects the uniformity of sowing is the seed guide and ditching component, which is of great significance to improving the sowing accuracy.

[0003] The existing vegetable sowing technology and equipment usually have problems such as inconsistent seed placement, seeds easily colliding with the pipe wall and seeds easily bouncing, which affects the uniformity of seed spacing and sowing quality, affects the growth environment of seeds, and thus affects the yield of vegetables. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and propose a seed guiding and furrowing mechanism which integrates furrowing, seed guiding and soil covering to form a suitable seed guiding trajectory and furrow shape, ensure zero-speed seed landing and prevent bouncing, and ensure the uniformity of seeding distance.

[0005] The technical solution of the present invention is: a seed guiding and furrowing mechanism, comprising two seed guiding plates, a gap between the two seed guiding plates, an outlet end of a seed guiding pipe located between the two seed guiding plates, wherein an inlet end of the seed guiding pipe is located in front of the outlet end of the seed guiding pipe, and the seed guiding pipe is cycloid-shaped, and its cycloid equation is:

[0006] y=3.643e-8x 4 -3.017e-5x 3 +0.01034x 2 -2.014x+193.1,

[0007] The upper end of the seed guide tube is connected with an air inlet pipe, and flowing gas is filled into the seed guide tube through the air inlet pipe.

[0008] In the present invention, the two seed guide plates are fixedly connected by the top plate above;

[0009] The front end of the seed guide plate is fixedly connected to the shark fin-shaped furrow opener, and the rear end of the top plate is connected to the whale tail-shaped soil coverer.

[0010] The top plate is provided with a long strip groove, which is connected to the gap between the two seed guide plates;

[0011] The top of the seed guide tube is the inlet end, which is connected to the sowing mechanism of the sowing device, and the bottom of the seed guide tube is the outlet end, which is located between the two seed guide plates, and the seed guide tube passes through the long strip groove of the top plate.

[0012] The gas forms turbulence in the seed guide tube. During the movement of seeds in the seed guide tube, the turbulence accelerates the movement of seeds in the seed guide tube.

[0013] When the seeds leave the outlet end of the seed guide tube, the movement direction of the seeds is opposite to the movement direction of the mechanism.

[0014] The cross section of the top plate is rectangular, and connecting plates connected to the sowing device are respectively fixed at the four vertices of the top plate.

[0015] The front end of the shark fin-shaped furrow opener is an arc-shaped furrowing knife, and the rear end of the shark fin-shaped furrow opener is fixedly connected to the seed guide plate;

[0016] The shark fin-shaped furrow opener is provided with two symmetrical concave cutting edges on the arc-shaped side surface facing the moving direction, and the concave cutting edges extend along the arc direction of the furrow opener.

[0017] A soil cover connecting plate is fixed to the bottom surface of the rear end of the top plate, the top end of the whale tail type soil cover is connected to the soil cover connecting plate through a rotating shaft, and a spring is provided on the annular outer side of the rotating shaft;

[0018] Both ends of the bottom surface of the whale tail type soil cover are pointed ends bent toward the moving direction, and the middle part of the bottom surface of the whale tail type soil cover is in an arc-shaped groove shape.

[0019] The beneficial effects of the present invention are:

[0020] (1) The seed guiding and furrowing mechanism described in the present application sequentially realizes the actions of furrowing, seeding, and soil return and covering;

[0021] (2) By reasonably setting the shape of the guide tube, the migration time of the seeds in the guide tube is made the same; at the same time, the airflow in the air inlet pipe can be coordinated to effectively prevent the seeds from bouncing in the guide tube, and the flow rate of the airflow can be controlled to achieve zero-speed seeding when the seeds leave the guide tube. With the cooperation of the above aspects, the uniformity of the seed-dropping distance is guaranteed;

[0022] (3) The shark fin-shaped furrow opener can easily cut soil and grass during the furrowing process. The furrow shape formed during the furrowing process can significantly reduce the bounce and rolling of seeds after they are planted, thus forming a smaller digging resistance;

[0023] (4) The whale tail type soil cover can effectively guide the flow of soil, realize soil reflux, and reduce soil congestion and adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0026] Figure 3 is a schematic diagram of a first three-dimensional mechanism of the present invention;

[0027] Figure 4 yes Figure 3 A local enlarged view of point A in FIG.

[0028] Figure 5 is a second three-dimensional structural schematic diagram of the present invention;

[0029] Figure 6 yes Figure 5 A partial enlarged view of point B in FIG.

[0030] In the figure: 1 seed guide frame; 2 top plate; 201 long strip groove; 202 connecting piece; 203 soil cover connecting plate; 3 shark fin shaped furrow opener; 301 furrow opener; 302 concave cutting blade; 4 seed guide tube; 5 whale tail shaped soil cover; 6 air inlet pipe; 7 rotating shaft; 8 spring. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figures 1 to 3 As shown, the seed guiding and furrowing mechanism of the present invention comprises a seed guiding frame 1, and a top plate 2 is fixed to the top surface of the seed guiding frame 1, and the connection between the entire mechanism and the frame of the sowing device is realized through the top plate 2. The front end of the seed guiding frame 1 is fixedly connected to the shark fin-shaped furrow opener 3. The lower end of the seed guiding tube 4 is located in the seed guiding frame 1. The rear end of the seed guiding plate 2 is connected to the whale tail-shaped soil cover 5.

[0034] In the present application, the seed guide frame 1 includes two parallel seed guide plates 6, there is a certain gap between the two seed guide plates 6, and the lower end of the seed guide tube 4 is located in the gap. The two seed guide plates 6 are connected through the top plate 2 above. The top plate 2 is provided with a long strip groove 201, and the long strip groove 201 is connected to the gap between the two top plates 2. Therefore, the seed guide tube 4 passes through the long strip groove 201 and extends between the two seed guide plates. The top plate 2 is provided with a connecting piece 202 connected to the frame, and the connection between the mechanism and the sowing device is achieved through the connecting piece 202. During the movement of the sowing device, the mechanism is driven to move accordingly, and the mechanism realizes the actions of trenching and dropping seeds during the forward movement. In the present embodiment, the cross-section of the top plate 2 is rectangular, and connecting pieces 202 are respectively fixed at the four vertices of the top plate 2.

[0035] The seed guide tube 4 is inserted into the seed guide plate from the front end of the mechanism. The upper end of the seed guide tube 4 is connected to the seed discharge mechanism in the sowing device, the top end of the seed guide tube 4 is the inlet, and the bottom end of the seed guide tube 4 is the outlet, and the inlet is located in front of the outlet. The upper end of the seed guide tube 4 is connected to the air intake pipe 6, and airflow is blown into the seed guide tube 4 through the air intake pipe 6, and the flow direction of the airflow is opposite to the movement direction of the mechanism.

[0036] The seeds entering the seed guide tube 4 are blown by the airflow and continuously move from the front end to the rear end along the seed guide tube. When the seeds flow out from the rear end of the seed guide tube, that is, leave the seed guide tube, the seeds at this time have a certain movement speed, and their movement direction is opposite to the movement direction of the mechanism. By controlling the size of the airflow in the air inlet pipe 6, the speed value of the seeds when leaving the seed guide tube outlet can be accurately controlled.

[0037] By providing an air inlet pipe and introducing air into the seed guide tube through the air inlet pipe, on the one hand, turbulence can be formed in the seed guide tube, and the turbulence can accelerate the seeds in the seed guide tube to move along the seed guide tube, but will not cause the seeds to bounce disorderly in the seed guide tube. In the absence of airflow assistance, when the seeds fall into the seed guide tube and slide down along the tube wall of the seed guide tube, the seeds are very likely to collide with the tube wall of the seed guide tube and bounce due to the excessive falling speed of the seeds. The seeds will directly affect the time interval between the front and rear seeds during the bouncing process, and then affect the uniformity of the grain spacing. In the present application, the seeds in the seed guide tube can flow out smoothly along the seed guide tube with the assistance of airflow, ensuring the time interval between the front and rear seeds falling.

[0038] On the other hand, by adjusting the velocity of the airflow, the velocity of the seeds when they leave the seed guide tube can be adjusted. Therefore, in actual work, the horizontal velocity of the seeds leaving the seed guide tube outlet can be equal in magnitude and opposite in direction to the velocity of the mechanism in the forward direction according to the actual movement speed of the mechanism. At this time, the velocity of the seeds when they leave the seed guide tube outlet is substantially equal to zero, achieving zero-speed seeding, so that the seeds can fall basically vertically into the soil below the seed guide tube outlet after leaving the seed guide tube, achieving accurate control of the seeding location.

[0039] Based on the above analysis, it can be seen that the setting of the air inlet pipe in the present application can ensure that the seeds falling into the seed guide tube can fall into the soil before and after a certain time interval under the control of the airflow, and the position of the seeds falling into the soil after leaving the seed guide tube is controllable, thereby ensuring the uniformity of the particle distance between the front and rear seeds during the seed dropping process.

[0040] In the present application, the seed guide tube 4 is cycloid-shaped, and its cycloid equation is:

[0041] y=3.643e-8x 4 -3.017e-5x 3 +0.01034x 2 -2.014x+193.1,

[0042] When the seeds enter the seed guide tube 4, no matter what their initial position is, the seed guide tube can ensure that the time required for the seeds to enter the seed guide tube and leave the outlet at the bottom of the seed guide tube is the same, that is, it ensures that all seeds have the same migration time in the seed guide tube. The seed guide tube 4 with the above cycloid equation shape cooperates with the air inlet pipe 6 to further ensure the uniformity of the seed spacing during the sowing process and improve the sowing effect.

[0043] The front end of the shark fin shaped furrow opener 3 is an arc-shaped furrowing knife 301, and the rear end of the shark fin shaped furrow opener 3 is fixedly connected to the seed guide plate 6. The side of the shark fin shaped furrow opener 3 facing the movement direction is provided with two symmetrically arranged concave cutting edges 302, which extend along the arc direction of the furrowing knife and penetrate the front side of the shark fin shaped furrow opener.

[0044] The trenching knife 301 located at the front end of the shark fin-shaped trenching device 3 plays the role of cutting soil and cutting grass. The trenching knife 301 is arc-shaped and its central angle is an obtuse angle. The obtuse-angle trenching ensures the stability of the trenching depth.

[0045] When the shark fin-shaped furrow opener 3 contacts the soil, the furrowing blade 301 first cuts the soil, and then the symmetrically arranged concave cutting edges 302 on both sides squeeze the soil, thereby forming a stable narrow furrow shape in the soil. The formed furrow shape provides a flexible ground contact condition for the seeds to fall, reduces the ground contact bounce and rolling of the seeds after falling, and forms a smaller digging resistance. After the seeds fall from the outlet of the seed guide tube, they directly fall into the narrow furrow formed by the shark fin-shaped furrow opener 3.

[0046] The tail of the mechanism is provided with a whale tail type soil covering device 5, such as Figure 5 and Figure 6 As shown, the shape of the cover is a whale tail. A cover connecting plate 203 is fixed to the bottom surface of the rear end of the top plate 2, and the top end of the whale tail cover 5 is connected to the cover connecting plate 203 through a rotating shaft 7, and a spring 8 is wound around the rotating shaft 7.

[0047] Both ends of the bottom surface of the whale tail type soil cover 5 are pointed ends bent toward the movement direction of the mechanism, and the middle portion of the bottom surface of the whale tail type soil cover 5 is an arc-shaped groove.

[0048] When the whale tail type soil cover 5 contacts the soil, the tips on both sides thereof are inserted into the soil, pushing up the soil on both sides and gathering it toward the middle of the whale tail type soil cover. At the same time, the arc-shaped groove in the middle of the whale tail type soil cover 5 completes the scraping of the soil. Therefore, the whale tail type soil cover can effectively guide the flow of the soil.

[0049] When encountering large rocks or soil congestion, when the whale tail type soil cover 5 contacts with the large rocks or the congested soil, under the resistance of the large rocks or the congested soil, the whale tail type soil cover 5 cannot continue to move forward, and the top of the whale tail type soil cover 5 swings around the rotating shaft 7, and the spring 8 wound around the outer ring of the rotating shaft 7 generates torque. After the whale tail type soil cover 5 swings a certain angle, the bottom of the whale tail type soil cover 5 bypasses the large rocks or the congested soil, ensuring that the entire mechanism can continue to move forward. When the whale tail type soil cover 5 does not contact with the large rocks or the congested soil, under the action of the spring 8, the whale tail type soil cover 5 can be automatically reset, reducing the occurrence of congestion and the adhesion of soil to the entire mechanism.

[0050] The working principle of the mechanism is as follows. As the sowing device moves forward, the shark fin-shaped furrow opener 3 at the front end first contacts the soil, and the furrowing action is achieved through the furrowing knife 301 and the concave cutting edge 302 on the shark fin-shaped furrow opener 3. A seed drop area is formed at the seed guide frame 1. After the seeds fall along the seed guide tube 4 behind the shark fin-shaped furrow opener 3, they directly fall into the seed furrow formed by the shark fin-shaped furrow opener 3 in the seed drop area without being squeezed by the soil on both sides. Subsequently, with the assistance of the whale tail-shaped soil cover 5, soil reflux is achieved, and a certain amount of soil covering is completed for the seeds in the seed furrow. In the actual working process, the multiple seed guide and furrowing mechanisms described in the present invention work in parallel and simultaneously, and simultaneously complete the work of soil division, seed drop, and reflux.

[0051] The above is a detailed introduction to the seed guiding and furrowing mechanism provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seed guiding and furrowing mechanism, comprising two seed guiding plates, a gap between the two seed guiding plates, and an outlet end of a seed guiding pipe located between the two seed guiding plates, characterized in that: The inlet end of the seed guide tube is located in front of the outlet end of the seed guide tube. The seed guide tube is cycloid-shaped, and its cycloid equation is: y=3.643e-8x 4 -3.017e-5x 3 +0.01034x 2 -2.014x+193.1, The upper end of the seed guide tube is connected with an air inlet pipe, and flowing gas is filled into the seed guide tube through the air inlet pipe.

2. The seed guiding and furrowing mechanism according to claim 1, characterized in that: The two seed guide plates are fixedly connected by the top plate above; The front end of the seed guide plate is fixedly connected to the shark fin-shaped furrow opener, and the rear end of the top plate is connected to the whale tail-shaped soil coverer.

3. The seed guiding and furrowing mechanism according to claim 2, characterized in that: The top plate is provided with a long strip groove, which is connected to the gap between the two seed guide plates; The top of the seed guide tube is the inlet end, which is connected to the sowing mechanism of the sowing device, and the bottom of the seed guide tube is the outlet end, which is located between the two seed guide plates, and the seed guide tube passes through the long strip groove of the top plate.

4. The seed guiding and furrowing mechanism according to claim 1, characterized in that: The gas forms turbulence in the seed guide tube. During the movement of seeds in the seed guide tube, the turbulence accelerates the movement of seeds in the seed guide tube. When the seeds leave the outlet end of the seed guide tube, the movement direction of the seeds is opposite to the movement direction of the mechanism.

5. The seed guiding and furrowing mechanism according to claim 2, characterized in that: The cross section of the top plate is rectangular, and connecting plates connected to the sowing device are respectively fixed at the four vertices of the top plate.

6. The seed guiding and furrowing mechanism according to claim 2, characterized in that: The front end of the shark fin-shaped furrow opener is an arc-shaped furrowing knife, and the rear end of the shark fin-shaped furrow opener is fixedly connected to the seed guide plate; The shark fin-shaped furrow opener is provided with two symmetrical concave cutting edges on the arc-shaped side surface facing the moving direction, and the concave cutting edges extend along the arc direction of the furrow opener.

7. The seed guiding and furrowing mechanism according to claim 2, characterized in that: A soil cover connecting plate is fixed to the bottom surface of the rear end of the top plate, the top end of the whale tail type soil cover is connected to the soil cover connecting plate through a rotating shaft, and a spring is provided on the annular outer side of the rotating shaft; Both ends of the bottom surface of the whale tail type soil cover are pointed ends bent toward the moving direction, and the middle part of the bottom surface of the whale tail type soil cover is in an arc-shaped groove shape.

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