A hand-held precision seeder

Abstract

The utility model relates to the technical field of agricultural seeding, disclose a kind of hand-held precision seeder, including machine body, gyro wheel shell, duck bill, soil covering and compacting wheel, cleaning mechanism and quick-release mechanism.Gyro wheel shell is installed in machine body front end, duck bill is arranged around gyro wheel shell, soil covering and compacting wheel is located in the rear of gyro wheel shell, and machine body is equipped with cleaning mechanism, and quick-release mechanism is arranged around gyro wheel shell.Cleaning mechanism includes motor, carousel, slot plate, swing assembly, sliding block and scraper, motor drives carousel rotation, column moves in slot plate and drives slot plate swing, and sliding block is reciprocating displacement by swing assembly drive, so that scraper is tightly attached to the surface of soil covering and compacting wheel and scrape off soil.The utility model realizes the automatic mud scraping of the surface of soil covering and compacting wheel by the swing cooperation of carousel and slot plate in cleaning mechanism, converts rotary power into reciprocating linear displacement of scraper, prevents uneven compaction caused by soil adhesion, and improves the soil quality after seeding.

Description

Technical Field

[0001] This utility model relates to the technical field of handheld seeding devices, and in particular to a handheld precision seeder. Background Technology

[0002] A handheld precision seeder is widely used in farmland sowing operations. During the device's forward movement, a soil-covering and compacting wheel rolls in the field to cover and compact the seed holes. When the soil moisture is high, soil easily adheres to the outer surface of the compacting wheel, causing the wheel diameter to increase. This not only increases the operating resistance but also causes uneven soil coverage depth, affecting sowing accuracy. Existing technologies usually rely on operators to manually remove the soil after stopping the machine. This method is inefficient and makes it difficult to maintain consistent soil coverage depth.

[0003] In addition, the duckbill installed at the front end of the seeder needs to be replaced after it is damaged or worn during operation. Existing replacement methods mostly use bolts for fixing, and the disassembly and assembly operations require special tools, which is cumbersome and time-consuming, making it difficult to meet the needs of rapid replacement in farmland operations. Therefore, a handheld precision seeder is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a handheld precision seeder, which aims to improve the problems in the prior art, such as uneven soil covering depth caused by soil adhesion on the outer surface of the soil covering and pressing wheel, and the complicated and time-consuming process of disassembling and assembling the seeding duckbill.

[0005] This utility model provides a handheld precision seeder, including a body, a roller shell mounted at the front end of the body, a duckbill mounted around the roller shell, a soil-covering and pressing wheel mounted on the body, a cleaning mechanism mounted on the body, and a quick-release mechanism disposed around the roller shell. The cleaning mechanism includes a support plate, a motor mounted on the support plate, a turntable fixedly connected to the motor, a grooved plate slidably connected to the turntable, a swing assembly rotatably connected to the grooved plate, a slider rotatably connected to the swing assembly, and a scraper fixed to the side of the slider. A column on the turntable slidably connects to a groove inside the grooved plate, and the top of the grooved plate is rotatably connected to the support plate. The slider slidably connects to the groove at the bottom of the support plate along the length of the groove, and the scraper is in close contact with the outer surface of the soil-covering and pressing wheel. Both ends of the support plate are fixedly connected to the body, the motor passes through the support plate, and the top of the grooved plate is rotatably connected to the support plate. The quick-release mechanism includes a housing, a movable plate slidably connected to the housing, and an insert plate fixed to the bottom of the movable plate. The insert plate passes through the housing and slidably connects to the housing, and is slidably inserted into the duckbill.

[0006] The swing assembly includes a connecting plate, with the bottom end of the groove plate rotatably connected to the connecting plate, and the connecting plate rotatably connected to the slider. This structure converts the swinging power generated by the groove plate into the linear displacement of the slider, and the power is transmitted through the connecting plate. The soil-covering and pressing wheel is made of high-strength engineering plastic with good wear resistance. The quick-release mechanism also includes a slide rod and a spring; the movable plate is passed through and slidably connected to the slide rod, the spring is sleeved on the outside of the slide rod, and both ends of the spring are fixedly connected to the movable plate. Both ends of the slide rod are fixedly connected to the outer shell. The motor shell of the cleaning mechanism is made of aluminum alloy, which has good heat dissipation performance. The connection between the scraper and the soil-covering and pressing wheel is a direct contact friction fit. The scraper is made of polyurethane, which has a harder hardness than the surface soil of the soil-covering and pressing wheel, ensuring scraping efficiency. The connection between the insert plate of the quick-release mechanism and the duckbill insertion point is a slidable insertion connection for easy disassembly.

[0007] This utility model has the following beneficial effects: 1. This utility model utilizes the swinging cooperation between the turntable and the trough plate in the cleaning mechanism to convert the rotational power into the reciprocating linear displacement of the scraper, thereby realizing automatic scraping of mud from the surface of the soil covering and pressing wheel, preventing uneven pressing caused by mud adhesion, and improving the quality of soil covering after sowing.

[0008] 2. This utility model simplifies the duckbill replacement process by setting a quick-release mechanism around the roller housing, utilizing the insertion and engagement of the insert plate and the duckbill, and the spring's reset constraint, and completes the disassembly and fixing of the duckbill without the aid of external tools.

[0009] 3. This utility model restricts the running trajectory of the scraper by sliding the slider in the groove at the bottom of the bearing plate, and uses the spring to provide axial preload for the quick release mechanism, thereby improving the running stability of key moving parts and ensuring the reliability of the sowing device in continuous operation in the field. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of a handheld precision seeder proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the soil compaction wheel of a handheld precision seeder proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0011] Legend: 1. Body; 2. Roller housing; 3. Duckbill; 4. Soil-covering and compacting wheel; 5. Quick-release mechanism; 51. Movable plate; 52. Insert plate; 53. Slide rod; 54. Spring; 55. Housing; 6. Cleaning mechanism; 61. Motor; 62. Turntable; 63. Swing assembly; 631. Slot plate; 632. Connecting plate; 64. Slider; 65. Bearing plate; 66. Scraper. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Reference Figures 1-4 This utility model provides an embodiment comprising: a machine body 1, a roller shell 2 installed at the front end of the machine body 1, a duckbill 3 installed around the roller shell 2, and a soil-covering and compacting wheel 4 installed on the machine body 1; the machine body 1 is made of aluminum alloy and serves as the mounting carrier and core support frame for the entire device; the roller shell 2 carries the seeding mechanism and rolls forward along the ground; the duckbill 3 is used to periodically enter and break the soil to complete seed sowing; the soil-covering and compacting wheel 4 is located behind the roller shell 2 and covers and compacts the seed hole after sowing; a cleaning mechanism 6 is provided on the machine body 1 to scrape off the soil adhering to the outer surface of the soil-covering and compacting wheel 4; a quick-release mechanism 5 is provided around the roller shell 2 for quick disassembly, assembly, and locking of the duckbill 3.

[0014] The cleaning mechanism 6 includes a support plate 65, a motor 61 mounted on the support plate 65, a turntable 62 fixedly connected to the output shaft of the motor 61, a groove plate 631 slidably connected to the turntable 62, a swing assembly 63 rotatably connected to the groove plate 631, a slider 64 rotatably connected to the swing assembly 63, and a scraper 66 fixed to the side of the slider 64. The two ends of the support plate 65 are fixedly connected to the body 1 by M6 bolts. The motor 61 is mounted through a flange and passes through the support plate 65. A column with a diameter of 8 mm is fixed on the turntable 62, which slidably connects to the groove inside the groove plate 631. The top of the groove plate 631 is rotatably connected to the support plate 65 by a pin. The slider 64 is slidably connected to the groove at the bottom of the support plate 65 by a guide rail, and the movement trajectory of the slider 64 is along the length of the groove. The scraper 66 is detachably fixed to the side of the slider 64 by screws. The end of the scraper 66 is in close contact with the outer cylindrical surface of the soil compaction wheel 4 to ensure continuous soil scraping.

[0015] The swing assembly 63 includes a connecting plate 632. The bottom end of the groove plate 631 is rotatably connected to the connecting plate 632, and the other end of the connecting plate 632 is rotatably connected to the slider 64. This structure converts the reciprocating swinging power generated by the groove plate 631 into the linear displacement of the slider 64. The power transmission of the crank rocker mechanism is realized through the connecting plate 632, ensuring that the swinging motion is accurately converted into the reciprocating linear motion of the slider 64, thus ensuring the continuity of the cleaning action.

[0016] The slider 64 and the bearing plate 65 form a linear guide fit, and the fit clearance is controlled within 0.05 mm to ensure the stability of the trajectory of the scraper 66 running on the surface of the soil compaction wheel 4. The bottom edge of the scraper 66 fits against the arc surface of the soil compaction wheel 4. The scraper 66 is made of polyurethane material, which has a hardness greater than that of soil, to ensure the efficiency and wear resistance of scraping for a long time, while avoiding scratching the surface of the compaction wheel.

[0017] The quick-release mechanism 5 is installed on the outer edge of the roller housing 2 and includes a housing 55, a movable plate 51 slidably connected to the housing 55, and an insert plate 52 fixed to the bottom of the movable plate 51. The insert plate 52 passes through the guide groove on the side of the housing 55 and slidably connects with the housing 55. The end of the insert plate 52 is slidably inserted into the insertion hole of the duckbill 3. The quick-release mechanism 5 realizes the quick fixation and disassembly of the duckbill 3 through the insertion and removal action of the insert plate 52.

[0018] The quick-release mechanism 5 is equipped with a slide rod 53. The movable plate 51 has a sliding hole in the center. The movable plate 51 is slidably connected to the slide rod 53 through which the slide rod 53 passes. The two ends of the slide rod 53 are fixed to the outer shell 55 by riveting. The spring 54 is sleeved on the outside of the slide rod 53. The two ends of the spring 54 abut against the inner side of the movable plate 51 and the inner wall of the outer shell 55, respectively. The spring 54 provides the movable plate 51 with a reset preload along the axis of the slide rod 53, ensuring that the insert plate 52 always maintains the locked state of the duckbill 3 without the action of external force.

[0019] The working principle is as follows: When the motor 61 of the cleaning mechanism 6 is started, the turntable 62 rotates with the output shaft of the motor 61. The column on the turntable 62 moves back and forth in the channel inside the trough plate 631, causing the trough plate 631 to swing back and forth with the pin connecting its top end to the bearing plate 65 as the axis.

[0020] The swinging power at the bottom of the groove plate 631 of the swing assembly 63 is transmitted through the connecting plate 632, which drives the slider 64 to slide linearly back and forth in the groove at the bottom of the bearing plate 65. The scraper 66 moves synchronously with the slider 64 and keeps in close contact with the outer surface of the soil compaction wheel 4, scraping off the soil attached to the surface of the soil compaction wheel 4, preventing the outer diameter of the compaction wheel and the error of the soil covering depth caused by soil accumulation.

[0021] During the sowing operation, the quick-release mechanism 5 locks and fixes the insert plate 52 with the insertion hole of the duckbill 3. When replacing the duckbill 3, manually press the movable plate 51, the movable plate 51 slides along the slide rod 53, the spring 54 is compressed, and the insert plate 52 retracts into the outer shell 55 synchronously with the movable plate 51. The duckbill 3 is released from the constraint and can be directly removed. When the movable plate 51 is released, under the rebound action of the spring 54, the movable plate 51 and the insert plate 52 are reset, and the insert plate 52 is inserted into the insertion hole of the duckbill 3 to be replaced again, realizing the quick reset and installation of the roller shell 2 of the machine body 1 and the duckbill 3.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handheld precision seeder, comprising a body (1), a roller housing (2) mounted on the front end of the body (1), a duckbill (3) mounted around the roller housing (2), and a soil-covering and pressing wheel (4) mounted on the body (1). Its features are, The body (1) has a cleaning mechanism (6), which includes a support plate (65), a motor (61) mounted on the support plate (65), a turntable (62) fixedly connected to the motor (61), a groove plate (631) slidably connected to the turntable (62), a swing assembly (63) rotatably connected to the groove plate (631), a slider (64) rotatably connected to the swing assembly (63), and a scraper (66) fixed to the side of the slider (64). The two ends of the bearing plate (65) are fixedly connected to the machine body (1). The motor (61) passes through the bearing plate (65). The column on the turntable (62) slides in the channel inside the groove plate (631). The top of the groove plate (631) is rotatably connected to the bearing plate (65). The slider (64) slides in the channel at the bottom of the bearing plate (65) along the direction of the channel. The scraper (66) is in close contact with the outer surface of the soil compaction wheel (4).

2. A handheld precision seeder according to claim 1, characterized in that, The swing assembly (63) includes a connecting plate (632), the bottom end of the groove plate (631) is rotatably connected to the connecting plate (632), and the connecting plate (632) is rotatably connected to the slider (64).

3. A handheld precision seeder according to claim 1, characterized in that, The roller housing (2) is surrounded by a quick-release mechanism (5); the quick-release mechanism (5) includes a housing (55), a movable plate (51) slidably connected to the housing (55), and an insert plate (52) fixed at the bottom of the movable plate (51). The insert plate (52) passes through the housing (55) and slidably connects with the housing (55), and the insert plate (52) slidably connects with the duckbill (3).

4. A handheld precision seeder according to claim 3, characterized in that, The quick-release mechanism (5) also includes a slide rod (53) and a spring (54); the movable plate (51) is passed through the slide rod (53) and slidably connected to the slide rod (53); the spring (54) is sleeved on the outside of the slide rod (53); the two ends of the spring (54) are fixedly connected to the movable plate (51); and the two ends of the slide rod (53) are fixedly connected to the outer shell (55).

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