A Seed Meter with Stepless Adjustment of Sowing Volume

Abstract

The invention discloses a seed sowing device with seeding rate steplessly regulated. The seed sowing device comprises a seed sowing device body as well as a seed sowing wheel, a seed cleaning mechanism and a seed protecting mechanism which are arranged in the seed sowing device body. A worker puts seeds into a seed filling room and starts the seed sowing device, a transmission shaft is driven to rotate by virtue of an external motor, and the seed sowing wheel rotates when being driven by the external motor, so that seeds in the seed filling room continuously enter mould holes of the seed sowing device; when the seeds are rotated to the other side of the seed sowing wheel, a seed protecting belt gets involved and blocks off the mould holes, and the seeds are prevented from accidently dropping out under the action of gravity; and when the seeds are rotated to the outlet of the seed sowing device, the seeds in the mould holes drop out due to dead weight, so that quantitative intermittent sowing of the seeds is realized. For achieving the aim of stepless regulation, the seed sowing device disclosed by the invention adopts a way that a stepping motor is used for driving a mould hole inner wheel, and by virtue of nesting and combination of a first containing part and a second containing part, the volume of the mould holes is increased or reduced along with rotation of the stepping motor. The seed sowing device disclosed by the invention also has the advantages of simple and compact structure and high adjustment and driving efficiency.

Description

technical field [0001] The invention relates to the field of agricultural seeding equipment, in particular to a seed meter capable of steplessly adjusting the seeding rate. Background technique [0002] The seed meter is one of the important parts of the planter. Its function is to guide the seeds in the seed box of the planter into a uniform seed flow or a single seed to control the seeding rate and achieve uniform sowing. There are many kinds of seed metering devices. At present, the combined hole type seed metering device is the main seed metering device of existing rice direct seeding equipment. [0003] Since the sowing rate of the rice hole direct seeding machine is fixed by the hole on the seeding wheel during the working process, it cannot be changed. The original combined hole sowing rate is mainly adjusted manually. The operation process is to let the machine stop first. Work, the staff get off and use the adjustment wrench to complete the mutual conversion of the...

AI Technical Summary

Problems solved by technology

Single or multiple groups of hole conversion can not meet the requirements of rice planting, and the hole adjustment of a complete set of seed meters will inevitably bring many problems to agricultural production.

[0005] In the prior art, there is a means of completing the hole conversion of the seed meter through intelligent control, such as two Chinese patent application numbers CN201610027163.8 and CN201610027152.X, which are completed through multiple gear sets and stepping motors type hole conversion, but the structure of the device is complex, the type hole conversion efficiency is low, and it is difficult to achieve accurate control

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