A pneumatic seed metering and seeding machine air supply system

Abstract

This utility model relates to the field of agricultural machinery technology, and in particular to an air supply system for a pneumatic seeding and planter. It includes a fan unit, a motor unit, an energy storage unit, a generator unit, and a transmission coupling unit. The generator unit is connected to the tractor's pre-installed power output shaft via the transmission coupling unit. The energy storage unit is connected to the generator unit. The motor unit is electrically connected to the energy storage unit and is also connected to the fan unit. When this pneumatic seeding and planter air supply system is working, it converts the kinetic energy output from the tractor's power output shaft into electrical energy, which drives the fan unit to operate at a preset speed. This ensures the continuous and stable operation of the air supply system, significantly improving the seeding accuracy and quality of the pneumatic seeding and planter. The drive method used in this pneumatic seeding and planter air supply system will not damage the battery or electrical system, has no requirements on the tractor's specifications, is highly applicable, and is easy to implement and promote.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment technology, and in particular to an air source system for a pneumatic seed metering and seeding machine. Background Technology

[0002] A pneumatic seed metering seeder, also known as a pneumatic planter, is a precision seeding machine that uses the pressure difference created by airflow to meter seeds. During operation, the pneumatic seed metering seeder relies on the power of air to complete the seeding process, including seed filling, cleaning, protecting, and placement. Therefore, the air supply system is the core component determining the seeding quality. Currently, there are three main types of air supply system drives: First, directly using the tractor's built-in battery in conjunction with a motor to drive the fan. However, the specifications of the tractor's built-in battery are usually only sufficient for the normal operation of its own electrical system and cannot meet the requirements for long-term continuous operation of the air supply system. Furthermore, this drive method can damage the battery and affect the normal operation of the tractor. Second, using the tractor's hydraulic system in conjunction with a hydraulic motor to drive the fan. This method is usually only suitable for large imported tractors, while most domestic tractors have low hydraulic output power, causing oil overheating even after short-term operation, and also making it impossible to drive the air supply system for extended periods. Thirdly, using the tractor's power take-off shaft to drive the fan results in the shaft's rotation speed varying with the throttle position, causing fluctuations in the air pressure of the air supply system, directly affecting sowing accuracy and quality. These technological limitations hinder the widespread adoption of pneumatic seeders in China, significantly restricting the user experience for domestic users. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides an air source system for a pneumatic seeding and planter. The system is powered by the power output shaft of a tractor, converting kinetic energy into electrical energy to drive the fan, thereby improving the operational stability of the air source system. This air source system is applicable to tractors of various specifications, has strong applicability, and is easy to promote.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A pneumatic seeding system includes a fan unit, a motor unit, an energy storage unit, a generator unit, and a transmission coupling unit. The generator unit is connected to a pre-installed power output shaft of the tractor via the transmission coupling unit, enabling it to convert the kinetic energy output during tractor operation into electrical energy. The energy storage unit is connected to the generator unit and stores the electrical energy output by the generator unit. The motor unit is electrically connected to the energy storage unit and is also connected to the fan unit via a transmission connection. Thus, the motor unit can drive the fan unit to operate stably, outputting a stable airflow that meets the needs of seeding.

[0006] Furthermore, the transmission coupling unit includes a spline coupling capable of being coupled to the power output shaft;

[0007] Furthermore, the transmission coupling unit includes a universal joint assembly connected between the spline coupling and the power generation device.

[0008] Furthermore, the energy storage unit includes a battery and mounting components that provide support and protection for the battery.

[0009] Furthermore, the pneumatic seeding machine's air supply system includes a mounting bracket, on which the fan, motor, energy storage unit, and power generation device are mounted and fixed.

[0010] Furthermore, the motor device is equipped with a frequency converter for adjusting the rotational speed.

[0011] Compared with the prior art, the pneumatic seed metering and seeding machine air source system of this utility model has the following beneficial technical effects:

[0012] When the air supply system of this pneumatic seeding machine is running, the generator is powered by the power take-off shaft pre-installed on the tractor, converting kinetic energy into electrical energy and storing it in the energy storage unit. The motor is powered by the energy storage unit, driving the fan to run at a preset speed, ensuring constant air pressure. This ensures the continuous and stable operation of the air supply system, significantly improving the seeding accuracy and quality of the pneumatic seeding machine. The drive method used in this pneumatic seeding machine's air supply system will not damage the battery or electrical system, has no requirements on the tractor's specifications, is highly applicable, and easy to implement and promote. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0014] Figure 1 This is a schematic diagram of the air source system of the pneumatic seeding and sowing machine of this utility model.

[0015] In the diagram, 1 is the fan unit, 2 is the motor unit, 3 is the energy storage unit, 4 is the power generation unit, 5 is the mounting bracket, 6 is the reduction mechanism, 7 is the universal joint assembly, and 8 is the spline coupling. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] See Figure 1 As shown in the embodiment, the specific structure of the pneumatic seeding system of the pneumatic seeding machine is disclosed, which includes a fan unit 1, a motor unit 2, an energy storage unit 3, a generator unit 4, and a transmission coupling unit. In the existing design of tractors, a power output shaft (PTO shaft) is usually reserved for outputting the engine's power to externally connected agricultural implements or auxiliary equipment; the transmission coupling unit can connect the generator unit 4 to the tractor's PTO shaft, thereby allowing the tractor to drive the generator unit 4 via the PTO shaft, converting kinetic energy into electrical energy; since the end of the PTO shaft usually adopts a spline structure, the transmission coupling unit includes a spline coupling 8 that can be coupled to the PTO shaft. The spline coupling 8 adopts a spline design adapted to the end of the PTO shaft. At the same time, to avoid the assembly accuracy affecting the transmission performance, the transmission coupling unit includes a universal joint assembly 7 connecting the spline coupling 8 and the generator unit 4. In addition, the transmission coupling unit can also be equipped with a reduction mechanism 6 to connect the power output shaft and the generator unit 4. The rotational speed ratio is optimized; the energy storage unit 3 is connected to the power generation device 4 and is used to store the electrical energy output by the power generation device 4. Based on the above-mentioned basic functions of the energy storage unit 3, the energy storage unit 3 includes a battery and a mounting component that provides support and protection for the battery; the battery can be selected from nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, lithium polymer batteries and lead-acid batteries according to actual conditions; the motor device 2 is electrically connected to the energy storage unit 3, and at the same time, the motor device 2 is driven by the fan device 1. Thus, the motor device 2 can drive the fan device 1 to operate stably and output stable air pressure to meet the working requirements of the pneumatic seeding machine; in specific implementation, the motor device 2 can adopt an integrated motor product with integrated deceleration and control functions, or it can adopt a combination design of conventional motor, deceleration device and controller.

[0018] Preferably, the pneumatic seeding machine air supply system includes a mounting bracket 5, and the fan device 1, motor device 2, energy storage unit 3 and power generation device 4 are mounted and fixed on the mounting bracket 5. At the same time, the mounting bracket 5 can be mounted and fixed on the body of the tractor or the pneumatic seeding machine.

[0019] Preferably, the motor device 2 is equipped with a frequency converter for adjusting the rotational speed, thereby regulating the output air pressure of the fan device 1.

[0020] When the air source system of this pneumatic seeding machine is running, the generator 4 is powered by the power output shaft reserved on the tractor, converting kinetic energy into electrical energy and storing it in the electrical energy storage unit 3. The motor 2 is powered by the electrical energy storage unit 3, driving the fan 1 to run at a preset speed, ensuring constant air pressure. This ensures the stable operation of the air source system and significantly improves the seeding accuracy and quality of the pneumatic seeding machine.

[0021] The air supply system of this pneumatic seeding machine does not damage the battery and electrical system, has no requirements on the size of the tractor, is highly applicable, and is easy to implement and promote.

Claims

1. An air supply system for a pneumatic seed metering and seeding machine, comprising a blower device, characterized in that: It also includes a motor unit, an energy storage unit, a power generation unit, and a transmission coupling unit; the power generation unit is connected to the power output shaft reserved on the tractor via the transmission coupling unit; the energy storage unit is connected to the power generation unit; the motor unit is electrically connected to the energy storage unit and is also connected to the fan unit via transmission.

2. The pneumatic seed metering and seeding machine air source system according to claim 1, characterized in that: The transmission coupling unit includes a spline coupling that can be coupled to the power output shaft.

3. The pneumatic seed metering and seeding machine air source system according to claim 2, characterized in that: The transmission coupling unit includes a universal joint assembly connecting the spline coupling and the power generation device.

4. The pneumatic seed metering and seeding machine air source system according to claim 1, characterized in that: The energy storage unit includes a battery and mounting components that provide support and protection for the battery.

5. The pneumatic seed metering and seeding machine air source system according to claim 1, characterized in that: The pneumatic seeding machine's air supply system includes a mounting bracket, on which the fan, motor, energy storage unit, and generator are mounted and fixed.

6. The pneumatic seed metering and seeding machine air source system according to claim 1, characterized in that: The motor device is equipped with a frequency converter for adjusting the rotational speed.

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