Mixed higher-order deformed elliptical gear planetary pot seedling transplanter seedling separation mechanism

Abstract

Belonging to agricultural machinery, the invention relates to a mixed higher-order deformed elliptical gear planetary pot seedling transplanter seedling separation mechanism, which mixes two pairs of deformed oval gear pairs and two pairs of deformed elliptical gear pairs to serve as a variable speed transmission mechanism. Specifically, a sun gear and two middle gears engaged with it are deformed oval gears, and the rest are all deformed elliptical gears, two parallel middle wheels are respectively positioned on middle wheel shafts, which are parallel with a central driving shaft and planet wheel shafts, but these shafts are not in one plane; planting arms are fixedly installed to the planet wheel shafts perpendicularly; a seedling separation housing is perpendicularly mounted at the outer ends of the planet wheel shafts, and the seedling separation housing is equipped with a seedling fetching rod, a seedling pushing rod, a shifting fork, a pressure spring, a cam and spring steel sheet seedling needles. The mechanism of the invention realizes a seedling fetch curvilinear motion of the needle point in a static track which is seal shaped and has an olecranon-like projection, and has the characteristics of simple and novel structure, small volume, light weight, small vibration, high work efficiency and good operation quality.

Description

technical field [0001] The invention belongs to agricultural machinery, in particular to a hybrid high-order denatured elliptical gear planetary system seedling separating mechanism for pot seedling transplanting machines. Background technique [0002] At present, there are two kinds of seedling separation methods for transplanting machines at home and abroad. One is to feed seedlings manually by semi-automatic transplanting machines. The second is automatic seedling separation. The automatic seedling separation mechanism has a multi-rod mechanism, a crank slide mechanism, and an incomplete gear intermittent mechanism. The above-mentioned mechanisms will increase the vibration of the transplanter frame with the increase in the frequency of the transplanter. , The rate of injured seedlings and the rate of missing seedlings increase, and the damage of the seedling arm is vulnerable, thereby limiting the improvement of work efficiency. The planetary gear system rotary variable...

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Problems solved by technology

[0002] At present, there are two ways of transplanting seedlings at home and abroad. One is to feed seedlings manually by semi-automatic transplanting machines. The work efficiency is not high. When the planting speed is high, the rate of missing seedlings and seedlings will increase greatly.

The second is automatic seedling separation. The automatic seedling separation mechanism has a multi-rod mechanism, a crank slide mechanism, and an incomplete gear intermittent mechanism. The above-mentioned mechanisms will increase the vibration of the transplanter frame with the increase in the frequency of the transplanter. , increased seedling injury rate and missing seedling rate, and the vulnerability of the seedling arm, which limits the improvement of work efficiency

The planetary gear system rotary variable speed transmission mechanism has been applied in the rice transplanter. The rice transplanter is a kind of planting machine for blanket seedlings. The needle does not need to enter the pot. The seedlings are taken out by tearing the soil block. The pot seedling transplanting machine needs the needles to enter the pot seedling tray to hold the seedlings, and can not damage the pot tray and damage the roots, so the trajectory needs a sharp protrusion; from the seedling needles entering the pot body to completely leaving the pot body , the direction of movement of the needles is parallel to the direction of the bowl, that is, the needles need a movement track close to a straight line, and the planetary system non-constant speed transmission mechanisms such as elliptical gears and eccentric non-circular gears used in existing planting machinery None of them can meet the above requirements. The special trajectory required by the pot seedling transplanting machine hinders the application of the rotary planetary gear system mechanism on the transplanting machine, that is, the rotary seedling separation mechanism cannot be used to overcome the shortcomings of the existing seedling separation mechanism

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