Finger clamping type low-interference precision dibbler with swinging duckbill

Abstract

The invention discloses a finger clamping type low-interference precision dibbler with a swinging duckbill, and belongs to the technical field of dibbling equipment. The dibbler comprises a first rotating shaft, a roller mechanism, a duckbill, a crank rocker mechanism and a linkage mechanism, the duckbill comprises a second rotating shaft, a fixed nozzle and a movable nozzle, the second rotating shaft is used for supporting the fixed nozzle so that the fixed nozzle can rotate, and the crank rocker mechanism comprises a crank fixedly connected with the first rotating shaft and a third rotating shaft. The linkage mechanism links the reciprocating rotation action of the third rotating shaft with the rotation action of the fixed nozzle, so that when the tip of the duckbill is in contact with a mulching film, the crank rocker mechanism pushes the tip of the fixed nozzle to rotate around the center line of the second rotating shaft in the direction opposite to the movement direction of the first rotating shaft. The horizontal speed of the duckbill in soil can be reduced, and the risk of film picking and tearing is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural power machinery, in particular to a hole planting device, and more particularly to a finger clamp type low disturbance precision hole planter with a swing duckbill. BACKGROUND

[0002] The finger clamp type precision planter uses a finger clamp to pick up seeds, which can effectively avoid the falling of seeds caused by the vibration of the machine during transportation, has the advantages of low rate of missing planting and re-planting, and the seeds and seed picking components are arranged in the roller, which has the advantages of high integration and small size, and is very suitable for the planting of corn and other seeds. For the climate environment in the northwest region, double-ridge furrow mulching planting is usually used to maximize the effect of temperature increase and soil conservation. However, the traditional finger clamp type precision planter uses a fixed duckbill, and the tip of the duckbill is inserted into the mulch film at a large inclination angle (the angle between the duckbill and the vertical plane), which will cause a large hole in the mulch film. In addition, the tip part has a relatively large horizontal speed when it contacts the mulch film, which will significantly tear the mulch film, resulting in significant loss of water, and the fixed duckbill has a large disturbance to the soil of the seed hole, which may seriously affect the germination of seeds. SUMMARY

[0003] In order to solve at least one of the above problems, the present application provides a finger clamp type low disturbance precision hole planter with a swing duckbill. The present application can reduce the horizontal speed of the duckbill when it enters the soil by setting a swing duckbill and adding a crank rocker mechanism to drive the duckbill to swing, thereby reducing the risk of film tearing to achieve soil conservation.

[0004] In order to achieve the above purpose, the technical scheme of the present application is as follows: A finger clamp type low disturbance precision hole planter with a swing duckbill, comprising a first rotating shaft and a roller mechanism, the roller mechanism is rotatably connected with the first rotating shaft, and a plurality of seed discharge holes are arranged in an annular array on the annular side wall of the roller mechanism, the hole planter of the present application further comprises: A plurality of swing duckbills are arranged in an annular array on the annular outer side wall of the roller mechanism, the inlet of each duckbill corresponds to a seed discharge hole, and each duckbill comprises: A second rotating shaft is carried on the roller mechanism and located outside the annular side wall of the roller mechanism, and is arranged in parallel with the first rotating shaft; A fixed bill is carried on the second rotating shaft and can rotate along the center line of the second rotating shaft; A movable bill is hingedly connected with the fixed bill and comprises a trigger plate and a sealing plate matched with the opening of the fixed bill, the trigger plate and the sealing plate are fixedly connected to form an L-shaped structure; A spring is used to push the movable bill to rotate, so that the sealing plate fits and closes the opening of the fixed bill, thereby avoiding the falling of seeds from the duckbill; A crank rocker mechanism comprises: a crank, one end of which is fixedly connected with the first rotating shaft, and the other end of which extends radially outward along the roller mechanism, for providing an eccentric load point to bear the connecting rod and the rocker; a connecting rod, one end of which is hingedly connected with the crank away from the first rotating shaft; a third rotating shaft, which is carried on the roller mechanism and located outside the annular side wall of the roller mechanism, and is arranged in parallel with the first rotating shaft; a rocker, one end of which is hingedly connected with the connecting rod away from the crank, and the other end of which is fixedly connected with the third rotating shaft; wherein the length of the crank is less than the length of the rocker; a linkage mechanism, for linking the reciprocating rotating action of the third rotating shaft with the rotating action of the fixed beak, so that when the tip of the beak contacts the mulch film, the crank rocker mechanism pushes the tip of the fixed beak to rotate in the opposite direction along the first rotating shaft centerline around the second rotating shaft centerline.

[0005] As a specific embodiment of the present application, the crank and the first rotating shaft are located at the same horizontal height, and when the second rotating shaft is located in the same vertical plane as the first rotating shaft, the fixed beak is vertically inserted into the ground, and the crank and the rocker are parallel to each other.

[0006] As a specific embodiment of the present application, the linkage mechanism is a connecting portion in which the second rotating shaft and the third rotating shaft are coaxially fixedly connected; the second rotating shaft and the third rotating shaft are both rotationally connected with the roller mechanism, and the second rotating shaft is fixedly connected with the fixed beak.

[0007] As a specific embodiment of the present application, the second rotating shaft is fixedly connected with a first horizontal rod, and a sliding groove is formed in the first horizontal rod along its axial direction; the third rotating shaft is fixedly connected with a second horizontal rod, one end of a sliding block is embedded in the sliding groove and is in sliding connection with the sliding groove, and the other end of the sliding block is hingedly connected with the second horizontal rod, so that when the third rotating shaft rotates, the angle between the first horizontal rod and the second horizontal rod changes accordingly, thereby driving the second rotating shaft to rotate, and the distance between the sliding block and the second rotating shaft is greater than the distance between the sliding block and the third rotating shaft.

[0008] As a specific embodiment of the present application, the edge of the seed release hole is connected with the entrance of the beak by a face-shaped material with elasticity.

[0009] As a specific embodiment of the present application, a beak protection shell is arranged outside the entrance of the beak.

[0010] Compared with the prior art, the present application has the following advantages: The invention sets a swing duckbill and a crank rocker mechanism, the duckbill increases the perpendicularity when near the ground, when the duckbill enters the soil, the duckbill rotates around the hinge point driven by the crank rocker mechanism, so as to generate a horizontal component speed opposite to the moving direction of the first rotating shaft, so as to balance the relatively large horizontal moving speed of the chassis, so as to reduce the horizontal speed of the duckbill, realize low disturbance seeding, which can effectively reduce the risk of film tearing and water loss. BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the finger clamp type low disturbance precision seed drill with a swing duckbill of the invention; Figure 2 It is a schematic diagram of the overall structure of a specific embodiment of the finger clamp type low disturbance precision seed drill with a swing duckbill of the invention; Figure 1 It is a schematic diagram of the structure of the crank rocker mechanism in the seed drill shown in the figure; Figure 3 It is a schematic diagram of the structure of the duckbill in the seed drill shown in the figure; Figure 1 It is a schematic diagram of the structure of the duckbill shown in the figure from another perspective; Figure 4 Figure 3 It is a schematic diagram of the structure of the duckbill shown in the figure from another perspective; Figure 5 It is a schematic diagram of the swing process of the duckbill during the working process of the seed drill shown in the figure; Figure 1 It is a schematic diagram of the structure of the linkage mechanism in another embodiment; Figure 6 It is a schematic diagram of the combination structure of the duckbill and the first horizontal rod in the figure; Figure 7 Figure 6 It is a schematic diagram of the combination structure of the duckbill and the first horizontal rod in the figure; Figure 8 It is a schematic diagram of the structure of the slider in the figure; Figure 6 In the figure, the first rotating shaft 100; the roller mechanism 200; the duckbill 300; the crank rocker mechanism 400; the pull rod 600; the seed blocking plate 700; the duckbill shell 800; The seed discharge hole 210; the second rotating shaft 310; the fixed duckbill 320; the movable duckbill 330; the spring 340; the crank 410; the connecting rod 420; the third rotating shaft 430; the rocker 440; the first horizontal rod 510; the sliding groove 511; the second horizontal rod 520; the slider 530; The trigger plate 331; the sealing plate 332; DETAILED DESCRIPTION The invention will be further described in detail below in conjunction with the embodiments and the drawings, but the embodiments of the invention are not limited thereto.

[0011] Please refer to Figures 1 to 5 ​​​It shows the structure of one specific embodiment of the finger clamp type low disturbance precision hill drop planter with swing duckbill of the present application. The present application is an improvement on the basis of the existing finger clamp type low disturbance precision hill drop planter, and the main improvements are concentrated on the duckbill 300 and the added crank rocker mechanism 400. The roller mechanism 200 and the finger clamp seed taking structure inside the roller mechanism of the finger clamp type low disturbance precision hill drop planter are all prior art. The specific structure can refer to CN119422547B-roller type double-action finger clamp precision hill drop planter, and choose double-finger clamp type hill drop planter, or refer to CN109952836A-rolling type seed sower, and choose single-finger clamp type hill drop planter. In addition, the finger clamp type low disturbance precision hill drop planter includes a first shaft 100 and a roller mechanism 200, the roller mechanism 200 is rotatably connected with the first shaft 100, a plurality of seed discharge holes 210 are arranged in an annular array on the annular side wall of the roller mechanism 200, each seed discharge hole 210 corresponds to a duckbill 300, and the first shaft 100 is fixedly connected with a pull rod 600, so as to limit the rotation of the first shaft 100 by the pull rod. During use, the pull rod 600 drags / pushes the first shaft 100 to move (not rotate) under the action of the power equipment, and the roller mechanism 200 rolls on the ground synchronously. During the rolling process, the finger clamp inside the roller mechanism 200 clamps the seeds and puts them into the seed discharge hole 210, and then into the cavity of the duckbill 300. The duckbill 300 opens and closes when it contacts the ground, so as to release the seeds and realize seeding. This part also belongs to the prior art, and will not be described in detail here. The following will mainly describe the improved part in detail.

[0012] In the finger clamp type low disturbance precision hill drop planter with swing duckbill of the present application, the duckbill adopts a swing type duckbill, and a crank rocker mechanism 400 and a linkage mechanism are also provided.

[0013] The inlet of the duckbill 300 communicates with the seed discharge hole 210 to receive the seeds. Each swing type duckbill 300 includes a second shaft 310, a fixed bill 320, a movable bill 330 and a spring 340. The second shaft 310 is carried on the roller mechanism 200 and located outside the annular side wall of the roller mechanism 200, and is arranged in parallel with the first shaft 100, for providing support for the swing of the fixed bill 320, so that the fixed bill 320 can rotate along the center line of the second shaft 310. The movable bill 330 includes a trigger plate 331 and a sealing plate 332 matched with the opening of the fixed bill 320, and the trigger plate 331 and the sealing plate 332 are fixedly connected to form an L-shaped structure. Meanwhile, the fixed bill 320 and the movable bill 330 are hinged. The spring 340 is used to push the movable bill 330 to rotate forward, so that the sealing plate 332 adheres to and closes the opening of the fixed bill 320, as shown in Figure 3 so as to avoid the seeds from falling out of the cavity of the duckbill 300. When the trigger plate 331 contacts the ground, it will push the movable bill 330 to rotate reversely, so that the sealing plate 332 is separated from the opening of the fixed bill 320, and the duckbill 300 is opened to realize seeding.

[0014] The crank-rocker mechanism 400 includes a crank 410, a connecting rod 420, a third rotating shaft 430, and a rocker arm 440. One end of the crank 410 is fixedly connected to the first rotating shaft 100, and the other end extends radially outward along the roller mechanism 200 to provide an eccentric bearing point for bearing the connecting rod 420. During movement of the device, the crank 410 is constrained by the first rotating shaft 100 and will not rotate. The third rotating shaft 430 is supported on the roller mechanism 200 and located outside the annular sidewall of the roller mechanism 200, and is arranged parallel to the first rotating shaft 100. One end of the connecting rod 420 is hinged to the end of the crank 410 away from the first rotating shaft 100, and one end of the rocker arm 440 is hinged to the end of the connecting rod 420 away from the crank 410, and the other end is... The third shaft 430 is fixedly connected; therefore, when the roller mechanism 200 rotates, the crank 410 in the crank-rocker mechanism 400 will not rotate with it, while other components (connecting rod 420, third shaft 430 and rocker 440) will rotate with it, so that the third shaft 430 reciprocates / oscillates with the rotation of the roller mechanism 200. At the same time, the length of the crank 410 is shorter than the length of the rocker 440, so that the connecting rod 420 and the rocker 440 will not form a straight line during the rotation of the roller mechanism 200, thus driving the third shaft 430 to reciprocate / oscillate instead of rotating continuously in the same direction.

[0015] The linkage mechanism is used to link the reciprocating rotation of the third rotating shaft 430 with the rotation of the fixed nozzle 320, so that when the tip of the duckbill 300 contacts the mulch film, the crank rocker mechanism 400 pushes the tip of the fixed nozzle 320 to rotate around the center line of the second rotating shaft 310 in the opposite direction of the movement of the first rotating shaft 100.

[0016] In some embodiments, such as Figure 5 As shown, the crank 410 and the first rotating shaft 100 are at the same horizontal height. When the second rotating shaft 310 and the first rotating shaft 100 are in the same vertical plane, the fixed nozzle 320 is inserted vertically into the ground. The crank 410 and the rocker arm 440 are parallel to each other. As a result, during the process of the duckbill 300 tip entering the soil, the tip of the duckbill 300 first swings in the opposite direction of the movement of the first rotating shaft 100, reducing the horizontal speed of the duckbill 300 and reducing the tearing effect on the mulch film. Then, after crossing the lowest point, the tip of the duckbill 300 swings in the direction of the movement of the first rotating shaft 100. Compared with the fixed duckbill 300, the swing of the fixed nozzle 320 during the soil entry makes its tilt angle (the angle between the center line of the fixed nozzle 320 and the vertical line) lower when entering and exiting the soil. This can reduce the size of the opening on the mulch film and is beneficial for moisture retention and temperature increase.

[0017] In some embodiments, such as Figure 5As shown, the linkage mechanism is a connection part that is coaxially and fixedly connected to the second rotating shaft 310 and the third rotating shaft 430. Both the second rotating shaft 310 and the third rotating shaft 430 are rotatably connected to the roller mechanism 200. The second rotating shaft 310 is fixedly connected to the fixed beak 320. Thus, the third rotating shaft 430 can directly drive the second rotating shaft 310 and the duckbill 300 to swing together. In this configuration, the rotation of the second rotating shaft 310 requires a relatively large torque. In other embodiments, such as... Figures 6 to 8 As shown, the second rotating shaft 310 is fixedly connected to the fixed nozzle 320, and a first horizontal rod 510 is fixedly connected to the second rotating shaft 310. A sliding groove 511 is formed on the first horizontal rod 510 along its axial direction. A second horizontal rod 520 is fixedly connected to the third rotating shaft 430. One end of the slider 530 is embedded in the sliding groove 511, and the other end is hinged to the second horizontal rod 520. In this way, the first horizontal rod 510 and the second horizontal rod 520 are movablely hinged (the hinge point position can move relative to the first horizontal rod). When the third rotating shaft 430 rotates, the angle between the first horizontal rod 510 and the second horizontal rod 520 changes accordingly, thereby driving the second rotating shaft 310 to rotate. The distance between the slider 530 and the second rotating shaft 310 is greater than the distance between the slider 530 and the third rotating shaft 430. The hinge point of the first horizontal rod 510 and the second horizontal rod 520 is closer to the third rotating shaft 430 than to the second rotating shaft 310. Therefore, the torque required to rotate the third rotating shaft 430 can be reduced, making it easier to drive the duckbill 300 to swing. In addition, during the swinging process, the slider 530 slides along the slide groove 511, thereby adapting to the angle change between the first horizontal rod 510 and the second horizontal rod 520 (the total length of the structure composed of the first horizontal rod 510 and the second horizontal rod 520 will change with the angle between the two).

[0018] In this invention, both the moving nozzle 330 and the fixed nozzle 320 are in motion during use. To prevent seeds from falling out of the inlet of the duckbill 300 when entering through the seed discharge hole 210, in some embodiments, the inlet size of the duckbill 300 is significantly larger than the size of the seed discharge hole 210. This allows seeds to smoothly enter the duckbill 300 during its movement. Furthermore, in some embodiments, a seed baffle 700 is provided to block parts that might cause seeds to spill from the inlet, for example... Figure 3 As shown, one end of the seed baffle 700 is fixedly connected to the annular outer wall of the roller mechanism 200, and the other end abuts against the hinge shaft between the fixed nozzle 320 and the movable nozzle 330. This seals the gap and prevents interference with the rotation of the fixed nozzle 320 and the movable nozzle 330. In other embodiments, the edge of the seed discharge hole 210 can be connected to the inlet of the duckbill 300 using an elastic planar material, such as a highly elastic rubber material. This prevents seeds from spilling from the inlet of the duckbill 300 and ensures the normal rotation of all components of the duckbill 300.

[0019] likeFigure 3 As shown, in some embodiments, a mouth guard shell 800 is also provided on the outer side of the duckbill 300 to protect the movable parts of the duckbill 300.

[0020] The specific implementation process of the present application is as follows: when the device is in use, first connect the pull rod 600 to the external power source, then start the external power source, so that the whole machine starts to roll under the action of the pulling force of the pull rod 600 and the ground friction force. At the same time, the finger clamp is driven by the cam to start clamping the corn seeds. The clamped seeds (such as corn seeds) are transported to the seed dropping area by the rotation of the seed plate and fall into the cavity of the duckbill 300 (this is the conventional setting and operation mode of the existing finger clamp type low disturbance precision drill, which can be referred to the existing technology for details). As the machine advances, the crank rocker mechanism 400 starts to enter the working cycle. Under the drive of the crank 410, the connecting rod 420 pulls the rocker 440 to make reciprocating swing around the fixed hinge point, and then drives the whole duckbill 300 to move with the rocker 440. When the duckbill 300 gradually approaches the ground, the verticality of the duckbill 300 is continuously increased under the drive of the crank rocker mechanism 400, that is, the included angle between the duckbill 300 and the ground gradually tends to 90 degrees from the initial inclined state. This dynamic angle adjustment design has a significant advantage compared with the traditional fixed duckbill 300: the traditional duckbill 300 needs to forcibly cut the soil when entering the soil, which is easy to produce large resistance and compact the surrounding soil; while the dynamically adjusted duckbill 300 forms a more acute stress surface at the soil entering end by increasing the verticality, the soil cutting resistance can be reduced by more than 30%, and the damage to the soil structure of the plowing layer is also reduced, creating a loose soil environment for seed germination.

[0021] After entering the soil phase, the motion characteristics of the crank 410, rocker 440 mechanism are further highlighted. During this process, the duckbill 300 is always rotating around the bottom hinge point under the driving of the mechanism, which not only maintains the vertical downward motion trend required for soil entry, but more importantly generates a horizontal first direction component. Since the seeder chassis will generate a relatively large horizontal second direction (away from the first direction) component when rolling forward, the two form opposite direction velocity components. Through the parameter optimization of the crank rocker mechanism 400, the two horizontal components can be made to be close in size and opposite in direction, so that the horizontal resultant velocity of the duckbill 300 at the moment of soil entry tends to zero, while maintaining a stable soil entry posture close to the vertical direction. This low disturbance seeding state effectively reduces the lateral drag of the duckbill 300 on the soil, controls the displacement of the soil particles within a minimum range, and the mulch film covering the ground surface only bears a slight vertical pressure, avoiding the local stress concentration of the mulch film caused by horizontal pulling in traditional seeding, greatly reducing the probability of mulch film tearing and the risk of water loss. When the duckbill 300 reaches a certain depth, the duckbill 300 opens under the support of the soil and the seed falls into the soil. Subsequently, the duckbill 300 leaves the soil. Before reaching the next seeding cycle, the duckbill 300 returns to the initial state under the action of the crank rocker mechanism 400, and the cycle is repeated.

[0022] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make various changes, modifications, replacements and variations to the technical solutions and inventive concepts of the present application within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A finger-clamp type low-disturbance precision seeder with a swinging duckbill, comprising a roller mechanism and a first rotating shaft rotatably connected, wherein a plurality of seed discharge holes are arranged in a circular array on the annular sidewall of the roller mechanism, characterized in that, Also includes: Multiple oscillating duckbill arrays are arranged in a ring array on the annular outer wall of the roller mechanism, each duckbill comprising: The second rotating shaft is supported on the roller mechanism and located outside the annular sidewall of the roller mechanism, and is parallel to the first rotating shaft; The fixed nozzle is supported on the second rotating shaft and can rotate along its centerline; The moving nozzle is hinged to the fixed nozzle and includes a trigger plate and a sealing plate that matches the opening of the fixed nozzle. The trigger plate and the sealing plate are fixedly connected to form an L-shaped structure. A spring is used to push the moving nozzle to rotate, so that the sealing plate fits against and closes the opening of the fixed nozzle; The crank-rocker mechanism includes: A crank, one end of which is fixedly connected to the first rotating shaft, and the other end of which extends radially outward along the roller mechanism; A connecting rod, one end of which is hinged to the end of the crank that is away from the first shaft; The third rotating shaft is supported on the roller mechanism and located outside the annular sidewall of the roller mechanism, and is parallel to the first rotating shaft; A rocker arm, one end of which is hinged to the end of the connecting rod away from the crank, and the other end is fixedly connected to the third rotating shaft; Wherein, the length of the crank is less than the length of the rocker arm; The linkage mechanism is used to link the reciprocating rotation of the third rotating shaft with the rotation of the fixed beak, so that when the tip of the duckbill comes into contact with the mulch film, the crank-rocker mechanism pushes the tip of the fixed beak to rotate around the center line of the second rotating shaft in the opposite direction of the movement of the first rotating shaft.

2. A finger-clamp type low-disturbance precision seeder with a swinging duckbill according to claim 1, characterized in that the crank and the first rotating shaft are located at the same horizontal height, and when the second rotating shaft and the first rotating shaft are located in the same vertical plane, the fixed nozzle is vertically inserted into the ground, and the crank and the rocker arm are parallel to each other.

3. A finger-clamp type low-disturbance precision seeding device with a swinging duckbill according to claim 1, characterized in that the linkage mechanism is a connecting part that is coaxially and fixedly connected to the second rotating shaft and the third rotating shaft; both the second rotating shaft and the third rotating shaft are rotatably connected to the roller mechanism, and the second rotating shaft is fixedly connected to the fixed nozzle.

4. A finger-clamp type low-disturbance precision seeder with a swinging duckbill as described in claim 1, characterized in that a first horizontal rod is fixedly connected to the second rotating shaft, and a sliding groove is formed on the first horizontal rod along its axial direction; a second horizontal rod is fixedly connected to the third rotating shaft, one end of a slider is embedded in the sliding groove and slidably connected thereto, and the other end is hinged to the second horizontal rod, such that when the third rotating shaft rotates, the angle between the first horizontal rod and the second horizontal rod changes accordingly, thereby driving the second rotating shaft to rotate, and the distance between the slider and the second rotating shaft is greater than the distance between the slider and the third rotating shaft.

5. A finger-clamp type low-disturbance precision seeding device with a swinging duckbill as described in claim 1, characterized in that, The edge of the seed vent and the duckbill inlet are connected by an elastic planar material.

6. A finger-clamp type low-disturbance precision seeding device with a swinging duckbill as described in claim 1, characterized in that, The duckbill has a protective shell on the outside of the entrance.

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