Concave-convex conjugated-Fourier planetary gear train seedling fetching mechanism

Abstract

The invention discloses a concave-convex conjugated-Fourier planetary gear train seedling fetching mechanism. An existing seedling fetching mechanism adopts a locking arc, a transmission ratio of a seedling fetching track is changed in a large range and the transmission impact is great. A central shaft is fixed on a planet carrier; an inward concave solar gear is fixed on a rack and hollowly sleeves the central shaft; a first middle outward convex gear sleeves a first middle shaft; a first middle Fourier gear is fixed on the first middle outward convex gear; a second middle outward convex gear sleeves a second middle shaft; a second middle Fourier gear is fixed on the second middle outward convex gear; a first planet gear is connected with a first planet shaft through a spline; a second planet gear is connected with a second planet shaft through a spline; a first gear gap eliminating cam is connected with the first planet shaft through a spline; a second gear gap eliminating cam is connected with the second planet shaft through a spline; and one end of the first planet shaft and one end of the second planet shaft stretch out of the planet carrier to be fixed on a shell body of a transplanting arm respectively. The concave-convex conjugated-Fourier planetary gear train seedling fetching mechanism is simple in structure and stable in transmission.

Description

technical field [0001] The invention belongs to the field of agricultural machinery and relates to a seedling picking mechanism, in particular to a concave-convex conjugate-Fourier gear planetary gear train seedling picking mechanism. Background technique [0002] my country is the world's largest producer and consumer of vegetables. With the acceleration of national agricultural structure adjustment and the improvement of people's living standards, the vegetable industry has developed rapidly, and the production scale has continued to expand, with remarkable results. Vegetable production is a labor-intensive industry. About 60% of the vegetable varieties are planted by seedling transplantation. Manual transplantation of seedlings is labor-intensive, low in production efficiency, and poor in quality. [0003] At present, major universities and units in my country have successively developed semi-automatic vegetable transplanting machines, which have reduced labor intensity t...

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Problems solved by technology

However, the semi-automatic transplanting machine requires the seedlings to be manually fed into the planter, and the operating efficiency is limited by the artificial feeding of seedlings. The work intensity is relatively high, and the phenomenon of seedling leakage occurs from time to time, which still cannot meet people's planting needs.

A small number of units have also developed fully automatic vegetable transplanting machines. As its core component, the seedling picking mechanism needs to complete the actions of picking seedlings, holding seedlings, pushing seedlings and returning. Due to the complex structure and high manufacturing cost of the current seedling picking mechanism, The shortcomings such as large vibration under high-speed operation have not been applied and promoted

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