Seeder unit

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a seeder unit. The seeder unit comprises a rack, and a seed can, a moving plate, a push rod groove, a push rod mechanism, a cam mechanism, a spring and a motor which are installed on the rack, wherein a seed outlet is formed in the bottom of the seed can; a seed opening is formed in the moving plate; the push rod groove is formed under the moving plate; the push rod mechanism comprises a push rod and a roller wheel; a push rod is installed in the push rod groove in a sliding way, one end of the push rod is connected with the moving plate by a connecting piece, and the other end of the push rod is connected with the cam mechanism by the roller wheel; the cam mechanism is connected with the motor; the two ends of the spring are respectively connected with the push rod groove and the push rod; the push rod is driven to make reciprocating motion in the push rod groove by the spring and the cam mechanism together. The seeder unit is simple and compact in structure, convenient to make and install, stable and uniform in seed arrangement and low in seed damage rate, thus being widely applied to agricultural sowing practice.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of agricultural machinery, in particular to a seed metering device. [0003] 【Background technique】 [0004] At present, there are various types of seed metering devices on the market. The existing seed metering devices include grooved wheel type, nail wheel type, spoon type, impeller type, centrifugal type, air suction type and finger clip type, etc., although the seed metering device There are many types of seed metering devices, but the overall requirements for seed metering devices have one similarity, namely: stable sowing rate, uniform seeding, no damage to seeds, good versatility, large sowing rate adjustment range, convenient and reliable adjustment, etc. However, none of the current seed meters can fully meet the above requirements at the same time. For example, although the outer grooved wheel seed meter has good stability, it has pulsation, which will damage the seeds and reduce the utiliz...

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Problems solved by technology

However, none of the current seed meters can fully meet the above requirements at the same time. For example, although the outer grooved wheel seed meter has good stability, it has pulsation, which will damage the seeds and reduce the utilization rate of seeds; the inner grooved wheel seed meter Although it basically does not damage the seeds, there is no pulsation phenomenon, and the uniformity is good, but the transmission mechanism is complicated and the stability is poor

Another example is the air-suction seed metering device, which has good versatility, does not have strict requirements on the size and shape of the seeds, does not need to strictly classify the seeds, and can increase the seeding speed, but the rotating seed metering disc cooperates with the immobile vacuum chamber. High airtight requirements, complex mechanism, easy to wear, and serious damage, the fan consumes a lot of energy

In addition, the disassembly of the existing seed metering device is cumbersome, and the seed metering device cannot be flexibly changed to suit different occasions

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