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Pneumatic seed shooting mechanism and automatic control method thereof

A kind of seeding and pneumatic technology, which is applied in the direction of interval-type quantitative seeding machinery, etc., can solve the problems of unstable transmission power, reduce the working efficiency of the seeder, affect the coordination between seeding and air pressure seeding, and achieve the power source of the system. stable effect

Inactive Publication Date: 2011-08-24
NORTHWEST A & F UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in order for the mechanism to complete a whole set of seeding injection process, the requirements for the power source are very critical; and the power transmission of the ground wheel of the seeder will be unstable due to the unevenness of the cultivated land, and the ground wheel will be unstable. The slipping phenomenon will affect the transmission and cooperation between the mechanism's seed discharge and air pressure injection, and reduce the operating efficiency of the seeder; in addition, during the sowing process, the operator needs to continuously monitor the seed volume of the seed box and the remaining air pressure in the air storage tank Whether it meets the pressure value required by pneumatic injection, time-consuming and laborious

Method used

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  • Pneumatic seed shooting mechanism and automatic control method thereof
  • Pneumatic seed shooting mechanism and automatic control method thereof
  • Pneumatic seed shooting mechanism and automatic control method thereof

Examples

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Embodiment 1

[0017] Example 1, such as figure 1 As shown, the pneumatic seed injection mechanism controlled by PLC includes: seed box 1, seed meter 2, stepper motor 3, seed delivery pipe 4, seed meter valve 6, seed chamber 7, PLC controller 8 , 2-position 2-way solenoid valve 9, exhaust pipe 10, gas tank 11, air pressure sensor 12, traction electromagnet 13, cam 14, photoelectric sensor 15, seed valve lever 16, material level sensor 17;

[0018] The control system includes a PLC controller 8, a stepper motor 3 is installed on the seed-discharging shaft, a material level sensor 17 is installed at the bottom of the right side of the seed box 1, and a traction electromagnet 13 is installed at the end of the seed-discharging valve lever 16. A two-position two-way electromagnetic valve 9 is installed on the exhaust pipe 10 at the right end of the injection chamber 7 and an air pressure sensor 12 is installed at the outlet of the gas tank 11, and a photoelectric sensor 15 is installed on the up...

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Abstract

The invention relates to a pneumatic seed shooting mechanism and an automatic control method thereof. The pneumatic seed shooting mechanism comprises a stepping motor (3), a PLC (programmable logic controller) controller (8), a two-station two-way solenoid valve (9), an air storage tank (11), a gas pressure sensor (12), a traction electromagnet (13), a photoelectric sensor (15) and a feeding level sensor; and the PLC controller is started to realize automatic control on the feeding level sensor, the stepping motor, the photoelectric sensor, the traction electromagnet, the gas pressure sensor and the two-station two-way solenoid valve. The PLC controller can cooperatively control the stepping motor, the traction electromagnet and the two-station two-way solenoid valve to operate according to a signal emitted by an infrared sensor, thus pneumatic seed shooting automatic control is realized.

Description

technical field [0001] The invention relates to a pneumatic seed injection mechanism, in particular to a pneumatic seed injection mechanism and an automatic control method thereof. Background technique [0002] With the continuous development of agricultural science and technology, the principle of pneumatic seeding has been applied to various seeding machines, which have the characteristics of fast seeding speed, high efficiency, and no damage to seeds. The structure of the existing pneumatic seeding device is as follows: figure 2 As shown, the camshaft is used to connect the valve cam 19 and the valve lever cam coaxially. In order to ensure the coordination of the injection device, a sprocket is installed on the ground wheel of the planter, and the power is transmitted to the camshaft through the chain and drives the two. The cam turns. In addition, another sprocket is installed on the camshaft to transmit the power to the seed meter to ensure the coordinated work of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C7/18
Inventor 冯永忠戴飞丁瑞霞张锋伟杨世琦杨改河
Owner NORTHWEST A & F UNIV
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