A metering mechanism for a planter

Abstract

The utility model discloses a kind of quantitative seeding mechanism of seeding machine, it is related to agricultural planting technical field, including installation ring, the top of installation ring is fixedly installed with support leg in ring-like arrangement equidistantly. The utility model adopts the above structure, during the application of this technical scheme, by setting stirring mechanism, quantitative discharge module, dismounting auxiliary mechanism and stable support structure, first install stirring mechanism and add seed, stir to prevent seed accumulation and send seed, quantitative discharge module controls speed and adjusts volume to keep uniform, dismounting auxiliary mechanism conveniently dismounts stirring mechanism and is fixed with sleeve to keep stable, stable structure supports whole, to achieve the effect that seed is not accumulated, seeding is accurate, maintenance is convenient, operation is stable, solve the problem that seed is easy to accumulate in prior art, manual volume adjustment efficiency is low, stirring component maintenance is difficult, mechanism support is unstable, reduce labor intensity, save maintenance time, adapt to scale production, improve the practicality of device and operation stability.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural planting technology, and specifically relates to a quantitative sowing mechanism for a seeder. Background Technology

[0002] In agricultural sowing operations, quantitative seeders have become one of the important pieces of equipment in modern agricultural production because they can control the amount of seeds sown, improve the standardization of sowing and the efficiency of resource utilization. In order to meet the sowing needs of different crops, the industry is constantly optimizing the structure and function of quantitative seeders to adapt to diverse planting scenarios and operational requirements.

[0003] Chinese utility model patent CN219876823U discloses a quantitative seeding seeder. The device is based on a movable base and is equipped with a quantitative seeding mechanism. The quantitative seeding mechanism includes two movable wheels and a movable roller installed at the bottom of the movable base, as well as an electric push rod, a grooving block and a placement box installed at the top of the movable base. In actual seeding operations, the device can adjust the grooving depth of the grooving block according to the seed sowing depth through the cooperation of the various structures on the movable base. At the same time, it can control the seed output by cooperating with the limiting plate and the actuating plate. After sowing, the movable roller can also cover and flatten the plot with soil, creating suitable conditions for seed growth. This improves the sowing efficiency and the practical performance of the equipment to a certain extent, and provides technical support for agricultural sowing operations.

[0004] However, in practical applications, this quantitative seeder still has obvious technical defects and shortcomings, making it difficult to fully meet the needs of efficient and stable sowing. On the one hand, in the seed output adjustment stage, the equipment relies on manual rotation of the threaded rod to drive the limiting plate to move, thereby adjusting the number of seeds output. This manual operation needs to be performed frequently during sowing operations, which not only increases the labor intensity of operators but also interrupts the sowing process, resulting in a significant reduction in overall sowing efficiency. It cannot adapt to large-scale, high-efficiency agricultural production scenarios. On the other hand, the storage box (i.e., the placement box) of the equipment lacks a dedicated agitation structure. During use, the seeds in the storage box are prone to accumulation due to their own weight, inter-particle friction, and other factors. Once the seeds accumulate, they will block the seed discharge channel, preventing the seeds from being discharged smoothly. This directly affects the continuity of normal sowing operations and may even cause problems such as missed sowing and broken rows, further reducing sowing quality and operational efficiency. It is evident that the existing technology still needs to be improved and designed to address the above problems. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a quantitative seeding mechanism for a seeder to solve the problems raised in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A quantitative seeding mechanism for a seeder includes an installation ring, on the top of which support legs are fixedly installed in a ring at equal intervals. A top ring is fixedly installed on the top of each support leg. A storage tank is fixedly installed on the inner side of the top ring. A quantitative discharge module is fixedly installed on the bottom of the storage tank. A disassembly and assembly auxiliary mechanism is fixedly installed on the rear side of the installation ring. A stirring mechanism is fixedly installed on the moving end of the disassembly and assembly auxiliary mechanism. The stirring mechanism is rotatably connected to the inside of the storage tank.

[0008] The quantitative discharge module includes a discharge hopper, which is fixedly installed at the bottom of the storage tank. A discharge pipe is fixedly installed at the bottom output end of the discharge hopper, and a discharge component is fixedly installed at the bottom of the discharge pipe.

[0009] As a preferred technical solution, the discharge assembly includes a discharge frame, which is fixedly installed at the bottom of the discharge pipe. A rotating shaft is rotatably connected inside the discharge frame. A first motor is fixedly installed on one side of the discharge frame. The output end of the first motor passes through the discharge frame and is connected to the end of the rotating shaft through a coupling. Tilting discharge guide plates are fixedly installed on the outer surface of the rotating shaft in a ring at equal intervals.

[0010] As a preferred technical solution, the top of the mounting ring is provided with mounting holes arranged in a ring at equal intervals, and the mounting holes are countersunk holes.

[0011] As a preferred technical solution, the disassembly and assembly auxiliary mechanism includes a mounting frame, which is fixedly installed on the middle of the back of the top ring. Synchronous pulleys are rotatably connected to both the upper and lower ends of the mounting frame, and a synchronous belt drives between the synchronous pulleys. A side rail is fixedly installed on one side of the mounting frame, and a slider is slidably connected inside the side rail. A connecting frame is fixedly installed on the outside of the slider, and the outer end of the connecting frame is fixedly connected to the outer side of the synchronous belt. A connecting rod is fixedly installed on the top of the connecting frame, and the upper end of the connecting rod is connected to the top side of the stirring mechanism. A second motor is fixedly installed on the upper end of one side of the mounting frame, and the output end of the second motor is fixedly connected to one side of the synchronous pulley located at the upper end.

[0012] As a preferred technical solution, a support sleeve is fixedly installed on the rear side of the mounting ring, and the connecting rod is slidably connected to the inner side of the support sleeve.

[0013] As a preferred technical solution, the stirring mechanism includes a top cover, which is fixedly installed on the outer end of the connecting rod and covers the top of the storage tank. A third motor is located in the middle of the top of the top cover, and a stirring shaft is fixedly installed through the top cover at the output end of the third motor. Stirring frames are fixedly connected to the outer surface of the stirring shaft at equal intervals.

[0014] As a preferred technical solution, a conveying auger is fixedly installed at the bottom of the stirring shaft, and the conveying auger is rotatably connected to the inside of the discharge pipe.

[0015] In summary, the present invention has the following main advantages:

[0016] First, during the application of this technical solution, by setting up a stirring mechanism and a quantitative discharge module, the stirring mechanism can be installed first, and then seeds can be added through the feeding pipe and feeding hopper on the top cover. The stirring mechanism can stir the seeds to prevent accumulation and deliver the seeds with the help of the conveying auger. The quantitative discharge module can adjust the discharge volume by controlling the motor speed and ensure uniform discharge, thereby achieving the effect of no seed accumulation and accurate sowing. This solves the problems of seed accumulation in the storage box causing sowing interruption in the existing technology, and the need for frequent manual adjustment of seed output, which leads to low sowing efficiency. It reduces the labor intensity of operators, ensures continuous sowing, and is suitable for large-scale and efficient agricultural production scenarios.

[0017] Secondly, during the application of this technical solution, by setting up a disassembly and assembly auxiliary mechanism and a stable support structure, the mixing mechanism can be easily installed and disassembled through the disassembly and assembly auxiliary mechanism during use. It can also ensure the stability of the moving installation of the mixing mechanism with the help of the support sleeve. At the same time, the installation ring, support leg and top ring work together to provide stable support for the whole, thereby achieving the effect of convenient maintenance of the mixing mechanism and stable operation of the whole. It solves the problems of difficult maintenance of mixing components due to the lack of convenient disassembly and assembly structure in the existing technology, and the problem that unstable mechanism support may affect the sowing effect. It saves maintenance time, improves maintenance efficiency, ensures the orderly operation of each component, and comprehensively improves the practicality and operational stability of this device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the extended state structure of this utility model;

[0020] Figure 3 This is a bottom view of the structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the quantitative emission module structure of this utility model.

[0022] Reference numerals: 1. Mounting ring; 2. Support leg; 3. Top ring; 4. Storage tank; 5. Quantitative discharge module; 51. Discharge hopper; 52. Discharge pipe; 53. Discharge assembly; 531. Discharge frame; 532. Rotating shaft; 533. First motor; 534. Tilting discharge guide plate; 6. Disassembly and assembly auxiliary mechanism; 61. Mounting frame; 62. Synchronous pulley; 63. Synchronous belt; 64. Side rail; 65. Slider; 66. Connecting frame; 67. Connecting rod; 68. Second motor; 69. Support sleeve; 7. Stirring mechanism; 71. Top cover; 72. Third motor; 73. Stirring shaft; 74. Stirring frame; 75. Conveying auger; 8. Mounting hole. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 4 The quantitative sowing mechanism of a seeder in this embodiment includes a mounting ring 1. Support legs 2 are fixedly mounted on the top of the mounting ring 1 in a ring shape with equal spacing. A top ring 3 is fixedly mounted on the top of the support legs 2. A storage tank 4 is fixedly mounted on the inner side of the top ring 3. A quantitative discharge module 5 is fixedly mounted on the bottom of the storage tank 4. A disassembly and assembly auxiliary mechanism 6 is fixedly mounted on the rear side of the mounting ring 1. A stirring mechanism 7 is fixedly mounted on the moving end of the disassembly and assembly auxiliary mechanism 6. The stirring mechanism 7 is rotatably connected to the inside of the storage tank 4.

[0025] The quantitative discharge module 5 includes a discharge hopper 51, which is fixedly installed at the bottom of the storage tank 4. A discharge pipe 52 is fixedly installed at the bottom output end of the discharge hopper 51, and a discharge component 53 is fixedly installed at the bottom of the discharge pipe 52.

[0026] refer to Figures 1-4 The discharge assembly 53 includes a discharge frame 531, which is fixedly installed at the bottom of the discharge pipe 52. A rotating shaft 532 is rotatably connected inside the discharge frame 531. A first motor 533 is fixedly installed on one side of the discharge frame 531. The output end of the first motor 533 passes through the discharge frame 531 and is connected to the end of the rotating shaft 532 through a coupling. A flipping discharge guide plate 534 is fixedly installed on the outer surface of the rotating shaft 532 in a ring at equal intervals. The top of the mounting ring 1 has mounting holes 8 arranged in a ring at equal intervals. The mounting holes 8 are countersunk holes.

[0027] refer to Figures 1-3The disassembly and assembly auxiliary mechanism 6 includes a mounting frame 61, which is fixedly installed on the middle of the back of the top ring 3. Both the upper and lower ends of the mounting frame 61 are rotatably connected to synchronous pulleys 62, and a synchronous belt 63 is connected between the synchronous pulleys 62. A side rail 64 is fixedly installed on one side of the mounting frame 61, and a slider 65 is slidably connected inside the side rail 64. A connecting frame 66 is fixedly installed on the outside of the slider 65, and the outer end of the connecting frame 66 is fixedly connected to the outer side of the synchronous belt 63. A connecting rod 67 is fixedly installed on the top of the connecting frame 66, and the upper end of the connecting rod 67 is connected to one side of the top of the stirring mechanism 7. A second motor 68 is fixedly installed on the upper end of one side of the mounting frame 61, and the output end of the second motor 68 is fixedly connected to one side of the synchronous pulley 62 located at the upper end. A support sleeve 69 is fixedly installed on the rear side of the mounting ring 1, and the connecting rod 67 is slidably connected to the inner side of the support sleeve 69.

[0028] refer to Figure 2 The stirring mechanism 7 includes a top cover 71, which is fixedly installed on the outer end of the connecting rod 67 and covers the top of the storage tank 4. A third motor 72 is located in the middle of the top of the top cover 71. The output end of the third motor 72 passes through the top cover 71 and is fixedly installed with a stirring shaft 73. Stirring frames 74 are fixedly connected at equal intervals on the outer surface of the stirring shaft 73. A conveying auger 75 is fixedly installed at the bottom of the stirring shaft 73 and is rotatably connected to the inside of the discharge pipe 52.

[0029] Operating principle and advantages: During use, the corresponding feeding pipe and feeding hopper are installed on the top cover 71. During the application and sowing process, the second motor 68 in the disassembly and assembly auxiliary mechanism 6 is started first. The output end of the second motor 68 drives the synchronous wheel 62 at the upper end of the mounting frame 61 to rotate. Since the two synchronous wheels 62 are connected by a synchronous belt 63, the upper synchronous wheel 62 drives the lower synchronous wheel 62 to rotate synchronously through the synchronous belt 63. A slider 65 is slidably connected inside the side rail 64 on one side of the mounting frame 61. The outer end of the connecting frame 66 outside the slider 65 is fixedly connected to the synchronous belt 63. When the synchronous belt 63 rotates, it drives the connecting frame 66 to move up and down along the side rail 64. The connecting rod 67 at the top of the connecting frame 66 moves accordingly, thereby driving the stirring connected to the upper end of the connecting rod 67. The mechanism 7 is moved to the top of the storage tank 4, so that the top cover 71 covers the top of the storage tank 4, completing the installation of the mixing mechanism 7. At this time, the seeds are added into the storage tank 4 through the feeding pipe and feeding hopper on the top cover 71. Then, the third motor 72 in the mixing mechanism 7 is started. The output end of the third motor 72 passes through the top cover 71 and drives the mixing shaft 73 to rotate. The mixing frame 74 on the outer surface of the mixing shaft 73 rotates with the mixing shaft 73 to stir the seeds in the storage tank 4, preventing the seeds from accumulating due to gravity and inter-particle friction. At the same time, the conveying auger 75 at the bottom of the mixing shaft 73 rotates with the mixing shaft 73 to evenly convey the seeds at the bottom of the storage tank 4 into the discharge pipe 52, avoiding the seeds from clogging at the inlet of the discharge pipe 52 and ensuring the continuity of seed conveying.

[0030] Then, the quantitative seeding operation stage begins. The quantitative discharge module 5, fixed at the bottom of the storage tank 4, is used to achieve quantitative seed discharge. The discharge hopper 51, fixed to the bottom of the storage tank 4, guides the seeds smoothly into the discharge pipe 52, preventing seed residue at the bottom of the storage tank 4. The discharge pipe 52 transports the seeds to the discharge assembly 53 at the bottom. The first motor 533 in the discharge assembly 53 is activated. The output end of the first motor 533 passes through the discharge frame 531 and drives the rotating shaft 532 to rotate via a coupling. The tilting guide plate 534, fixed to the outer surface of the rotating shaft 532, rotates with the rotating shaft 532. When the tilting guide plate 534 rotates... When the rotating shaft 532 moves to the bottom of the discharge pipe 52, the seeds in the discharge pipe 52 fall into the gap between two adjacent flipping discharge guide plates 534. As the rotating shaft 532 continues to rotate, when the gap containing the seeds rotates to the bottom outlet of the discharge frame 531, the seeds fall into the planting pit of the plot under the action of gravity. By controlling the rotation speed of the first motor 533, the rotation speed of the rotating shaft 532 can be adjusted, thereby controlling the amount of seeds conveyed by the flipping discharge guide plate 534 per unit time, realizing quantitative seed sowing without the need for manual adjustment of the limit plate. Moreover, the flipping discharge guide plates 534 are set at equal intervals, and the gap volume between adjacent guide plates is fixed to ensure that the amount of seeds discharged each time is uniform.

[0031] Finally, when the sowing operation is completed or maintenance is required, the mixing mechanism 7 is disassembled. When cleaning, maintenance, or replacement of the mixing mechanism 7 is needed, the second motor 68 is restarted and controlled to reverse, driving the synchronous belt 63 to rotate in the opposite direction. This, in turn, drives the mixing mechanism 7 upward through the connecting frame 66 and connecting rod 67, causing the mixing mechanism 7 to detach from the storage tank 4, allowing for disassembly and maintenance. After maintenance, the mixing mechanism 7 can be reinstalled on top of the storage tank 4 by reversing the operation. The installation ring 1, in conjunction with the support leg 2 and top ring 3, provides stable support for the entire mechanism, ensuring the orderly operation of each component. The mixing frame 74 and conveying auger 75 of the mixing mechanism 7 effectively prevent the seeds from entering the storage tank 4. The seed accumulation prevents blockage of the discharge pipe 52, thus ensuring continuous sowing operations. The quantitative discharge module 5, with its first motor 533, rotating shaft 532, and tilting guide plate 534, eliminates the need for manual adjustment of seed output, reducing operator workload, improving sowing accuracy, and adapting to large-scale, high-efficiency agricultural production scenarios. The assembly and disassembly auxiliary mechanism 6 eliminates the need for manual handling of the mixing mechanism 7, reducing maintenance difficulty and labor intensity, saving maintenance time, and improving equipment maintenance efficiency. The guiding effect of the support sleeve 69 on the connecting rod 67 ensures the stability of the mixing mechanism 7's movement and installation, preventing installation deviations from affecting the mixing effect. These structures work together to comprehensively improve the practicality, operational efficiency, and ease of maintenance of this device.

[0032] During the application of this technical solution, the controller uses an STM32F407 series microcontroller, which is installed on the top ring 3 near the disassembly and assembly auxiliary mechanism 6. The controller is equipped with a 5-inch TFT color display screen. The third motor 72 of the stirring mechanism 7, the first motor 533 of the quantitative discharge module 5, and the second motor 68 of the disassembly and assembly auxiliary mechanism 6 are all 60W-120W DC brushless motors, with models ranging from BLDC-60-24V to BLDC-120-24V. Each motor is equipped with a gearbox reducer with a reduction ratio range of 1:8 to 1:20, which is used to improve torque and adjust the speed to 30-100rpm. Each motor is equipped with a 512-line incremental encoder, which can realize flexible adjustment of rotation and stepless speed regulation.

[0033] A capacitive level sensor (model CL-300, measuring range 0-500mm) is installed on the inner wall of storage tank 4 to monitor the remaining seed quantity. A photoelectric counting sensor (model E3Z-LS63, detection distance 5-30mm) is installed at the outlet of discharge pipe 52 to count the number of seeds sown. A linear displacement sensor (model KTC-800, measuring range 0-800mm) is installed at the side rail 64 of the disassembly and assembly auxiliary mechanism 6 to monitor the position of slider 65.

[0034] The power supply system uses 24V / 40Ah to 24V / 80Ah lithium battery packs, installed on one side of the bottom of mounting ring 1. The positive terminals of the lithium battery packs are connected to the power input terminals of the controller, three motor drivers, and each sensor via the main switch, while the negative terminals are grounded together. The controller signal output terminal is connected to the signal input terminal of each motor driver via an RS485 bus, and the motor driver output terminal is connected to the corresponding motor terminal. The encoder signal output terminal of each motor is connected to the controller signal input terminal via an SPI bus. The signal output terminals of the level sensor, photoelectric counting sensor, and linear displacement sensor are all connected to the controller signal input terminal via an I2C bus. After receiving the signals from each sensor, the controller calculates and controls the motor operation through its internal program, while displaying parameters such as seed balance and sowing quantity on the display screen, forming a complete control and monitoring circuit system.

[0035] The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principles of each electronic component are not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art, and the application of the prior art is very mature. Therefore, they will not be elaborated here.

Claims

1. A quantitative seeding mechanism for a seeder, characterized in that: The device includes an installation ring (1), on which support legs (2) are fixedly installed at equal intervals in a ring shape at the top. A top ring (3) is fixedly installed on the top of the support legs (2). A storage tank (4) is fixedly installed on the inner side of the top ring (3). A quantitative discharge module (5) is fixedly installed on the bottom of the storage tank (4). A disassembly and assembly auxiliary mechanism (6) is fixedly installed on the rear side of the installation ring (1). A stirring mechanism (7) is fixedly installed on the moving end of the disassembly and assembly auxiliary mechanism (6). The stirring mechanism (7) is rotatably connected to the inside of the storage tank (4). The quantitative discharge module (5) includes a discharge hopper (51), which is fixedly installed at the bottom of the storage tank (4). A discharge pipe (52) is fixedly installed at the bottom output end of the discharge hopper (51), and a discharge component (53) is fixedly installed at the bottom of the discharge pipe (52).

2. The quantitative seeding mechanism of a seeder according to claim 1, characterized in that: The discharge assembly (53) includes a discharge frame (531), which is fixedly installed at the bottom of the discharge pipe (52). A rotating shaft (532) is rotatably connected inside the discharge frame (531). A first motor (533) is fixedly installed on one side of the discharge frame (531). The output end of the first motor (533) passes through the discharge frame (531) and is connected to the end of the rotating shaft (532) through a coupling. A rotating guide plate (534) is fixedly installed on the outer surface of the rotating shaft (532) in a ring with equal spacing.

3. The quantitative seeding mechanism of a seeder according to claim 1, characterized in that: The top of the mounting ring (1) is provided with mounting holes (8) arranged in a ring at equal intervals, and the mounting holes (8) are countersunk holes.

4. The quantitative seeding mechanism of a seeder according to claim 1, characterized in that: The disassembly and assembly auxiliary mechanism (6) includes a mounting frame (61), which is fixedly installed on the middle of the back of the top ring (3). Both the upper and lower ends of the mounting frame (61) are rotatably connected to synchronous pulleys (62). A synchronous belt (63) is connected between the synchronous pulleys (62). A side rail (64) is fixedly installed on one side of the mounting frame (61). A slider (65) is slidably connected inside the side rail (64). A connecting frame (66) is fixedly installed on the outside of the slider (65). The outer end of the connecting frame (66) is fixedly connected to the outer side of the synchronous belt (63). A connecting rod (67) is fixedly installed on the top of the connecting frame (66). The upper end of the connecting rod (67) is connected to the top side of the stirring mechanism (7). A second motor (68) is fixedly installed on the upper side of one side of the mounting frame (61). The output end of the second motor (68) is fixedly connected to the side of the synchronous pulley (62) located at the upper end.

5. The quantitative seeding mechanism of a seeder according to claim 4, characterized in that: A support sleeve (69) is fixedly installed on the rear side of the mounting ring (1), and the connecting rod (67) is slidably connected to the inner side of the support sleeve (69).

6. The quantitative seeding mechanism of a seeder according to claim 1, characterized in that: The stirring mechanism (7) includes a top cover (71), which is fixedly installed on the outer end of the connecting rod (67). The top cover (71) covers the top of the storage tank (4). A third motor (72) is located in the middle of the top of the top cover (71). The output end of the third motor (72) passes through the top cover (71) and is fixedly installed with a stirring shaft (73). Stirring racks (74) are fixedly connected at equal intervals on the outer surface of the stirring shaft (73).

7. The quantitative seeding mechanism of a seeder according to claim 6, characterized in that: A conveying auger (75) is fixedly installed at the bottom of the stirring shaft (73), and the conveying auger (75) is rotatably connected to the inside of the discharge pipe (52).

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