Seeding device

Abstract

The utility model discloses a seeding device and relates to the technical field of agricultural robots. The device comprises a plurality of seed leakage mechanisms, a plurality of soil breaking and covering mechanisms and a driving mechanism, the seed leaking mechanism comprises a seed box and a seed leaking roller rotationally mounted in the seed box, and seed clamping holes with different hole diameters are formed in the peripheral side of the seed leaking roller; the driving mechanism comprises a seeding rack and a driving shaft rotationally mounted on the seeding rack, and the seed leaking roller is mounted on the driving shaft; walking wheels are rotationally installed at the two ends of the sowing machine frame, and the walking wheels and the driving shaft are in transmission connection through a variable-speed first transmission assembly. The driving mechanism is adopted to drive the seed leaking roller to rotate, the driving mechanism adopts the walking wheel to drive the driving shaft to rotate, so that the seeding rate is matched with the advancing rate of the whole device, the seeding uniformity is ensured, and the walking wheel is in transmission connection with the driving shaft through the variable-speed first transmission assembly, so that the seeding efficiency is improved. The seeding speed is adjusted, and the seeding requirements of various seeds are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural robots, in particular to a sowing device. Background Art

[0002] When the seeder is operating, seeds are discharged from the seed box into the seed delivery tube according to the required sowing amount, and fall into the opened groove through the furrow opener, and then the seeds are covered and compacted by the soil covering mechanism.

[0003] At present, most of the existing seed drills use sliding baffles or valves to adjust the opening size of the seed box, thereby adjusting the rate of seed leakage according to the diameter of the seeds. However, this sowing method has obvious deficiencies in the accuracy of sowing amount, sowing speed, and sowing uniformity, and has poor adjustability. A seed drill can usually only sow one or several seeds of the same type and size, and it is difficult to meet the sowing needs of multiple types of seeds, and its applicability is poor. Utility Model Content

[0004] The utility model aims to provide a sowing device, which drives the seed leakage rollers in various sub-boxes to rotate by adopting a driving mechanism, and the driving mechanism drives the driving shaft to rotate by adopting a walking wheel in contact with the ground, so that the sowing rate matches the travel rate of the entire sowing device, thereby ensuring the uniformity of sowing, and the walking wheel and the driving shaft are connected by a variable-speed first transmission component to achieve the adjustment of the sowing speed, that is, the adjustment of the sowing interval, to meet the sowing needs of various types of seeds, and solve the problems of poor adjustability and poor applicability of the seeder in the prior art.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a sowing device, comprising a plurality of seed leaking mechanisms, a plurality of soil breaking and covering mechanisms corresponding to the seed leaking mechanisms, and a driving mechanism for driving the seed leaking mechanisms and the soil breaking and covering mechanisms to operate;

[0007] The seed leaking mechanism is fixedly mounted on the soil breaking and covering mechanism, and a plurality of the soil breaking and covering mechanisms are fixedly mounted on the driving mechanism;

[0008] The seed leakage mechanism comprises a seed box and a seed leakage roller rotatably installed in the seed box, the seed box has a feed inlet at the upper end and a discharge outlet at the lower end, and the seed leakage roller has seed holes of different diameters on its circumference;

[0009] The soil breaking and covering mechanism comprises a soil breaking frame and a trenching member fixedly mounted on the soil breaking frame, and the discharge port of the seed box extends to the trenching member;

[0010] The driving mechanism comprises a seed drill frame and a driving shaft rotatably mounted on the seed drill frame, and the seed leakage rollers of the plurality of seed leakage mechanisms are all mounted on the driving shaft to rotate under the drive of the driving shaft;

[0011] Travel wheels are rotatably mounted on both ends of the seed drill frame, and the travel wheels are transmission-connected to the drive shaft via a first speed-variable transmission assembly.

[0012] As a preferred technical solution of the present utility model, the first transmission assembly includes a first gear group, a second gear group and a chain for connecting the first gear group and the second gear group, the first gear group is fixedly connected to the rotating shaft of the walking wheel, the second gear group is fixedly installed at one end of the driving shaft, the first gear group and the second gear group both have a number of gears of different diameters, and the transmission ratio of the first gear group and the second gear group can be adjusted by adjusting the chain to mesh with gears of different diameters on the first gear group and the second gear group.

[0013] As a preferred technical solution of the present utility model, the first transmission assembly also includes a tensioner, a rocker arm and a tension spring, one end of the rocker arm is hinged to the seed drill frame, the tensioner is rotatably mounted on the other end of the rocker arm, one end of the tension spring is fixedly connected to the rocker arm, and the other end of the tension spring is fixedly connected to the seed drill frame to drive the tensioner to press against the chain to tighten the chain.

[0014] As a preferred technical solution of the utility model, the first transmission assembly also includes a lever for moving the chain, one end of the lever is hinged to the seed drill frame, and the other end of the lever can move the chain to engage with gears of different diameters.

[0015] As a preferred technical solution of the present utility model, the driving mechanism also includes a stirring drive shaft, which passes through several seed boxes of the seed leakage mechanism and rotates with the seed boxes. Several stirring blades are fixedly mounted on the stirring drive shaft, and the stirring blades are arranged in the seed box. One end of the stirring drive shaft is connected to one end of the drive shaft through a second transmission assembly.

[0016] As a preferred technical solution of the utility model, soil-breaking support wheels are rotatably mounted on the front and rear ends of the soil-breaking frame, and the trenching member is arranged between the two soil-breaking support wheels.

[0017] As a preferred technical solution of the present utility model, the trenching member adopts a "Λ"-shaped structure, and the discharge port of the seed box extends to the bifurcated gap in the trenching member.

[0018] As a preferred technical solution of the utility model, the rear end of the earth-breaking frame is connected with a soil covering member via a pulling member.

[0019] As a preferred technical solution of the utility model, a soil aggregate piece is fixed on the lower surface of the soil covering piece, and the soil aggregate piece adopts an "eight"-shaped structure.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model adopts a driving mechanism to drive the seed leakage rollers in various sub-boxes to rotate. The driving mechanism adopts a walking wheel that rolls in contact with the ground to drive the driving shaft to rotate, so that the sowing rate matches the travel rate of the entire sowing device, thereby ensuring the uniformity of sowing.

[0022] 2. The utility model is connected to the driving shaft by a variable-speed first transmission assembly. The first transmission assembly includes a first gear set with several gears of different diameters, a second gear set, and a chain for connecting the first gear set and the second gear set. By adjusting the meshing of the chain with the gears of different diameters on the first gear set and the second gear set, the transmission ratio of the first gear set and the second gear set can be adjusted, thereby adjusting the sowing speed, that is, adjusting the sowing interval, to meet the sowing needs of various types of seeds.

[0023] 3. The utility model arranges a seed leaking roller in a rotatable manner in the seed box, and seed holes with different apertures are opened on the circumference of the seed leaking roller. During sowing, seeds are inserted into the seed holes one by one, thereby ensuring the continuity of seed supply. The apertures of the seed holes are different, and different seed holes are switched in the seed box. Flexible adjustment can be made according to the sowing requirements of different seed diameters, and the utility model is suitable for sowing various types of seeds, ensuring accurate seed placement and reducing seed waste.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a structural schematic diagram of a seeding device of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the seeding device from another perspective;

[0028] Figure 3 is a schematic diagram of the structure of the driving mechanism;

[0029] Figure 4is a structural schematic diagram of a first transmission assembly;

[0030] Figure 5 It is a structural diagram of the assembly of the seed leaking mechanism and the soil breaking and covering mechanism;

[0031] Figure 6 It is a structural schematic diagram of the seed leakage mechanism;

[0032] Figure 7 It is a schematic diagram of the assembly of parts in the seed box that cooperate with the seed leakage roller;

[0033] Figure 8 It is a schematic diagram of the structure of the seed leakage roller;

[0034] Fig. 9 It is a structural schematic diagram of the soil breaking and covering mechanism;

[0035] Fig.10 It is a side view of the soil breaking and covering mechanism.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 100-seed leakage mechanism, 200-soil breaking and covering mechanism, 300-driving mechanism, 1-traveling wheel, 2-driving shaft, 3-seeder frame, 4-first transmission assembly, 401-first gear set, 402-second gear set, 403-chain, 404-tension wheel, 405-rocker, 406-tension spring, 407-shift lever, 5-stirring drive shaft, 6-second transmission assembly, 7-seed box, 8-seed leakage roller, 801-slot, 802-seed hole, 9-stirring blade, 10-curved guide, 11-soil breaking frame, 12-ditching member, 13-soil breaking support wheel, 14-soil covering member, 15-soil gathering member. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the description of the present invention, it should be understood that terms such as "end", "upper", "lower", "side", "top", "bottom", "length", "inside", and "surface" indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present invention.

[0040] At present, most existing seed drills use sliding baffles or valves to adjust the opening size of the seed box, thereby adjusting the rate of seed leakage according to the diameter of the seed. However, this sowing method has obvious deficiencies in terms of sowing amount accuracy, sowing speed, and sowing uniformity, and has poor adjustability. A seed drill can usually only sow one or several seeds of the same type and size, which is difficult to meet the sowing needs of multiple types of seeds and has poor applicability. Based on this, the present embodiment provides a sowing device, which has multiple advantages such as sowing amount accuracy, good sowing uniformity, and adjustable sowing speed.

[0041] See also Figure 1-Figure 2 As shown, the sowing device includes two seed leaking mechanisms 100, two soil breaking and covering mechanisms 200 corresponding to the seed leaking mechanisms 100, and a driving mechanism 300 for driving the seed leaking mechanisms 100 and the soil breaking and covering mechanisms 200 to operate. The two seed leaking mechanisms 100 and the two soil breaking and covering mechanisms 200 are arranged along the width direction of the driving mechanism 300. The seed leaking mechanism 100 is fixedly mounted on the soil breaking and covering mechanism 200 to form a whole, and the soil breaking and covering mechanism 200 is fixedly mounted on the driving mechanism 300. It is worth noting that the number of seed leaking mechanisms 100 and soil breaking and covering mechanisms 200 can be determined according to the number of plants actually sown.

[0042] See also Figure 3 As shown, the driving mechanism 300 includes a seeding machine frame 3 and a driving shaft 2 rotatably mounted on the seeding machine frame 3 through an axle seat, and the driving shaft 2 is used to drive each seed leakage mechanism 100 to leak seeds. Traveling wheels 1 are rotatably mounted on both ends of the seeding machine frame 3 through the axle seat, and the traveling wheels 1 and the driving shaft 2 are connected by a variable speed first transmission assembly 4, so that the driving shaft 2 is driven to rotate by the rotation of the traveling wheel 1, so that the seed leakage speed matches the travel speed of the seeding device.

[0043] Based on the above design, when the walking wheel 1 moves at the same speed, in order to adjust the speed of the driving shaft 2 and thus adjust the sowing rate, the following design is adopted: Figure 3 and Figure 4 As shown, the first transmission assembly 4 includes a first gear set 401 and a second gear set 402 having multiple gears of different diameters, and a chain 403 for connecting the first gear set 401 and the second gear set 402. The first gear set 401 is fixedly connected to the rotating shaft of the walking wheel 1, and the second gear set 402 is fixedly installed at one end of the driving shaft 2. The transmission ratio of the first gear set 401 and the second gear set 402 can be adjusted by adjusting the meshing of the chain 403 with the gears of different diameters on the first gear set 401 and the second gear set 402.

[0044] In a preferred embodiment, the first transmission assembly 4 further includes a tensioning structure for tightening the chain, the tensioning structure includes a tensioning wheel 404, a swing rod 405 and a tension spring 406, one end of the swing rod 405 is hinged to the seed drill frame 3, the tensioning wheel 404 is rotatably mounted on the other end of the swing rod 405, one end of the tension spring 406 is fixedly connected to the swing rod 405, and the other end of the tension spring 406 is fixedly connected to the seed drill frame 3 to drive the tensioning wheel 404 to press against the chain 403 to tighten the chain 403. With this tensioning design, no matter which gear the chain 403 is adjusted on on the first gear set 401 and the second gear set 402, the operation stability of the first transmission assembly 4 can be guaranteed.

[0045] In another preferred embodiment, the first transmission assembly 4 also includes a lever 407 for moving the chain 403, one end of the lever 407 is hinged to the seed drill frame 3, and the other end of the lever 407 can move the chain 403 to engage with gears of different diameters, thereby facilitating the adjustment of the chain 403.

[0046] In this implementation, see Figure 5 and Figure 6 As shown, the seed leakage mechanism 100 includes a seed box 7 and a seed leakage roller 8 rotatably mounted in the seed box 7, and the seed leakage roller 8 is mounted on the driving shaft 2, so as to rotate under the drive shaft 2. A feed inlet is provided at the upper end of the seed box 7, and a discharge outlet is provided at the lower end. The circumference of the seed leakage roller 8 is in close contact with the inner wall of the seed box 7 to prevent the seeds from falling from the gap between the seed leakage roller 8 and the inner wall of the seed box 7 under the action of gravity.

[0047] See also Figure 7 and Figure 8 As shown, two circles of seed holes 802 are opened on the circumferential side of the seed-leaking roller 8 along the axial direction of the seed-leaking roller 8. The seed holes 802 are opened along the radial direction of the seed-leaking roller 8. The apertures of each circle of seed holes 802 are different. The seed-leaking roller 8 can slide along the axial direction of the drive shaft 2 to switch different circles of seed holes 802 located in the seed box 7. When the seed-leaking roller 8 rotates, due to the effect of gravity, the seeds fall into the seed holes 802 from the top of the seed-leaking roller 8 in sequence, and each seed hole 802 can only fall into one seed. When the seed-leaking roller 8 drives the seeds to rotate to the bottom, the seeds leak out from each seed hole 802 in sequence to achieve uniform and continuous sowing. It is worth noting that more number of seed holes 802 with different apertures can be opened on the seed-leaking roller 8 according to actual sowing needs.

[0048] In this embodiment, the seed-leaking roller 8 can slide along the axial direction of the driving shaft 2. The two ends of the seed-leaking roller 8 are fixedly connected with couplings, which are sleeved on the circumference of the driving shaft 2 and slide with the driving shaft 2. The circumference of the coupling is threadedly connected with bolts. When the bolts are tightened, one end of the bolts abuts against the circumference of the driving shaft 2, and the seed-leaking roller 8 can be fixed at the set position on the driving shaft 2.

[0049] In a preferred implementation of this embodiment, please refer to Figure 7 and Figure 8 As shown, two circular notches 801 are provided on the circumference of the seed-leaking roller 8, and the number of the notches 801 corresponds to the number of circles of the seed-holding holes 802, and each circle of the seed-holding holes 802 is provided on a circle of notches 801 and communicates with the notches 801. A baffle 9 is fixedly installed on the side wall of the seed box 7, and one end of the baffle 9 can extend into the notch 801 and slide with the notch 801. In addition, the baffle 9 is located below the seed-leaking roller 8. During the rotation of the seed-leaking roller 8, the baffle 9 slides along the notch 801 and passes through each seed-holding hole 802 in turn, thereby removing the seeds in the seed-holding hole 802, further ensuring the uniformity of sowing. A curved guide 10 is fixedly installed on the inner wall of the seed box 7, and the lower end of the curved guide 10 abuts against the upper edge of the circumference of the seed-leaking roller 8, and the curved guide 10 can be made of a plastic material with a certain elasticity. The setting of the curved surface guide 10 has the following functions: 1. The curved surface guide 10 can guide the seed flow falling from the seed box 7 so that it can accurately enter the seed hole 802 of the seed leakage roller 8 to avoid seed scattering or clogging. 2. Reduce seed loss: The curved surface guide 10 ensures that the seeds can be effectively captured in the seed hole 802, reducing the loss of seeds due to failure to enter the seed hole 802 during the seed leakage process, thereby improving the sowing efficiency. 3. Stabilize the seed supply: The curved surface guide 10 provides a stable path during the seed flow process, so that the seeds can evenly and continuously enter the seed hole 802 of the seed leakage roller 8, ensuring the smoothness and stability of the sowing process.

[0050] In a preferred implementation of this embodiment, the driving mechanism 300 further includes a stirring driving shaft 5, which passes through the seed box 7 of each seed leakage mechanism 100 and rotates with the seed box 7. Two stirring blades 9 are fixedly mounted on the stirring driving shaft 5. The stirring blades 9 are arranged in the seed box 7 to prevent the seeds from agglomerating or getting stuck in the seed box 7, and to ensure the continuity and uniformity of the seeds falling along the seed box 7. Figure 3 As shown, one end of the stirring drive shaft 5 is connected to one end of the drive shaft 2 through a second transmission assembly 6, and the second transmission assembly 6 adopts a pulley and belt transmission method.

[0051] In this example, see Fig. 9 and Fig.10As shown, the soil breaking and covering mechanism 200 includes a soil breaking frame 11 and a trenching member 12 fixedly mounted on the soil breaking frame 11. The trenching member 12 adopts an "Λ"-shaped structure. The discharge port of the seed box 7 extends to the bifurcated gap in the trenching member 12. When the trenching member 12 opens a planting trench on the ground, the seeds falling from the seed box 7 just fall into the planting trench. The soil breaking support wheels 13 are rotatably mounted at the front and rear ends of the soil breaking frame 11, and the trenching member 12 is arranged between the two soil breaking support wheels 13. In addition, the rear end of the soil breaking frame 11 is connected to a soil covering member 14 through an iron chain, and the soil covering member 14 adopts a metal block. A soil-collecting member 15 is fixed to the lower surface of the soil-collecting member 14. The soil-collecting member 15 is a metal rod and adopts an "eight"-shaped structure. When the seeds fall into the planting trench, the soil gathering member 15 gathers the soil on both sides of the planting trench into the trench, and at the same time the soil covering member 14 can smooth the gathered soil and cover the seeds to ensure the planting environment of the seeds.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sowing device, characterized in that: It comprises a plurality of seed leaking mechanisms (100), a plurality of soil breaking and covering mechanisms (200) corresponding to the seed leaking mechanisms (100), and a driving mechanism (300) for driving the seed leaking mechanisms (100) and the soil breaking and covering mechanisms (200); The seed leaking mechanism (100) is fixedly mounted on the soil breaking and covering mechanism (200), and a plurality of the soil breaking and covering mechanisms (200) are fixedly mounted on the driving mechanism (300); The seed leakage mechanism (100) comprises a seed box (7) and a seed leakage roller (8) rotatably mounted in the seed box (7); the seed box (7) has a feed inlet at the upper end and a discharge outlet at the lower end; and seed holes (802) of different diameters are formed on the circumference of the seed leakage roller (8); The soil breaking and covering mechanism (200) comprises a soil breaking frame (11) and a furrowing member (12) fixedly mounted on the soil breaking frame (11), and the discharge port of the seed box (7) extends to the furrowing member (12); The driving mechanism (300) comprises a seed drill frame (3) and a driving shaft (2) rotatably mounted on the seed drill frame (3); the seed leakage rollers (8) of the plurality of seed leakage mechanisms (100) are all mounted on the driving shaft (2) so as to rotate under the drive of the driving shaft (2); Travel wheels (1) are rotatably mounted on both ends of the seed drill frame (3), and the travel wheels (1) are transmission-connected to the drive shaft (2) via a first variable-speed transmission assembly (4).

2. A sowing device according to claim 1, characterized in that: The first transmission assembly (4) comprises a first gear set (401), a second gear set (402) and a chain (403) for connecting the first gear set (401) and the second gear set (402); the first gear set (401) is fixedly connected to the rotating shaft of the walking wheel (1); the second gear set (402) is fixedly mounted on one end of the driving shaft (2); the first gear set (401) and the second gear set (402) both have a plurality of gears of different diameters; the transmission ratio of the first gear set (401) and the second gear set (402) can be adjusted by adjusting the meshing of the chain (403) with the gears of different diameters on the first gear set (401) and the second gear set (402).

3. A sowing device according to claim 2, characterized in that: The first transmission assembly (4) further comprises a tension wheel (404), a rocker arm (405) and a tension spring (406); one end of the rocker arm (405) is hinged to the seed drill frame (3); the tension wheel (404) is rotatably mounted on the other end of the rocker arm (405); one end of the tension spring (406) is fixedly connected to the rocker arm (405); and the other end of the tension spring (406) is fixedly connected to the seed drill frame (3) to drive the tension wheel (404) to press against the chain (403) to tighten the chain (403).

4. A sowing device according to claim 3, characterized in that: The first transmission assembly (4) further comprises a lever (407) for moving the chain (403), one end of the lever (407) being hinged to the seed drill frame (3), and the other end of the lever (407) being capable of moving the chain (403) to mesh with gears of different diameters.

5. A sowing device according to any one of claims 1 to 4, characterized in that: The driving mechanism (300) further comprises a stirring driving shaft (5), wherein the stirring driving shaft (5) passes through a plurality of seed boxes (7) of the seed leakage mechanism (100) and is rotatably matched with the seed boxes (7), a plurality of stirring blades (9) are fixedly mounted on the stirring driving shaft (5), and the stirring blades (9) are arranged in the seed box (7), and one end of the stirring driving shaft (5) is connected to one end of the driving shaft (2) by a second transmission assembly (6).

6. A sowing device according to claim 1, characterized in that: The front and rear ends of the soil breaking frame (11) are rotatably mounted with soil breaking support wheels (13), and the trenching member (12) is arranged between the two soil breaking support wheels (13).

7. A sowing device according to claim 6, characterized in that: The trenching member (12) adopts an "Λ"-shaped structure, and the discharge port of the seed box (7) extends to the bifurcated gap in the trenching member (12).

8. A sowing device according to claim 7, characterized in that: The rear end of the soil breaking frame (11) is connected to a soil covering member (14) via a pulling member.

9. A sowing device according to claim 8, characterized in that: A soil aggregate piece (15) is fixed to the lower surface of the soil covering piece (14), and the soil aggregate piece (15) adopts an "eight"-shaped structure.

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