Pusher-type seed-metering device

Abstract

The invention provides a pusher-type seed-metering device, and belongs to the technical field of agricultural machinery. The seed-metering device comprises a rack, a seed case, a driving mechanism and a seed-metering mechanism, wherein the driving mechanism and the seed-metering mechanism are arranged on the rack; the seed case is fixed above the rack, and seed-metering holes are formed in the bottom of the seed case; the driving mechanism comprises a motor, a driving gear and a driven gear which are meshed with each other, a cam, a cam shaft, a bearing and a bearing block; and the seed-metering mechanism comprises a seed guiding pipe, a seed metering tank, a seed metering pipe and a push rod. An agricultural seeding machine comprises the push type seed-metering device, a traveling wheel, a connecting rod, a handle, a support, an opener and a press wheel. The seed-metering device is simple and compact in structure, convenient to manufacture and assemble and stable and uniform in seed metering, has the advantages of controllable seeding quantity and relatively low seed damage rate, and can be widely applied to agricultural production.

Description

【Technical field】 [0001] The invention relates to the technical field of agricultural machinery, in particular to a push rod type seed metering device. 【Background technique】 [0002] There are many kinds of seed metering devices. The existing seed metering devices include groove wheel type, nail wheel type, spoon type, impeller type, centrifugal type, air suction type, finger clip type, etc. Although there are various types, the general requirements for seed metering devices are the same, namely: stable sowing rate, uniform seeding, no damage to seeds, good versatility, wide range of sowing rate adjustment, convenient and reliable adjustment, etc. However, the current seed metering devices cannot fully meet these requirements. For example, although the outer grooved wheel type seed metering device has good stability, it has pulsation phenomenon, which will damage the seeds and reduce the utilization rate of seeds, while the inner grooved wheel type basically does not damage...

AI Technical Summary

Problems solved by technology

However, the current seed metering devices cannot fully meet these requirements. For example, although the outer grooved wheel type seed metering device has good stability, it has pulsation phenomenon, which will damage the seeds and reduce the utilization rate of seeds, while the inner grooved wheel type basically does not damage the seeds. 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

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

Therefore, the above-mentioned seed meter is difficult to be widely used

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