Rotary rice pot seedling transplanting mechanism

Abstract

The invention discloses a rotary rice pot seedling transplanting mechanism. Power is transferred to a center shaft; sun gears in two gear cases are hollowly sleeved at two ends of the center shaft and fixed on a transmission case through jaw-and-toothed flanges; the two sun gears at the two sides are respectively engaged with corresponding intermediate gears symmetrically fixed on corresponding intermediate shafts; the two intermediate gears are respectively engaged with corresponding planetary gears symmetrically fixed on corresponding planetary shafts; the end of each planetary shaft extending out from the left gear case is fixedly provided with a transplanting arm; and gears in the gear cases are all Bessel gears with gear pitch curves obtained through fitting value points of a Bessel fitting curve. When the transplanting mechanism works, the transplanting arms form tracks and attitudes meeting demands on transplanting of rice pot seedlings due to variable-speed transmission of a Bessel gear planetary gear train in the gear cases. According to the invention, the Bessel gear planetary gear train is used in designing of the rotary rice pot seedling transplanting mechanism, so the mechanism has the advantages of a compact structure, small vibration, stationary transmission and realization of high speed transplanting of rice pot seedlings.

Description

technical field [0001] The invention relates to agricultural machinery, in particular to a rotary rice pot seedling transplanting mechanism. Background technique [0002] Rice pot seedling transplanting is the process of transplanting the cultivated seedlings with nutrient soil pots into the field. Transplanting rice pot seedlings does not hurt seedlings and tillers early. Transplanting pot seedlings to the surface of the field with higher soil temperature can till tillering 5 to 7 days earlier than ordinary flat plate transplanting. Effective tillering at low nodes increases by 20%, saving 30 plants %, 80% water saving, 40% fertilizer saving, and an average yield increase of more than 5%, which is currently recognized as the best way to increase yield except for variety improvement. [0003] The rice pot seedling transplanting mechanism is the core working part on the rice pot seedling transplanting machine to take out the pot seedlings from the hole of the plastic plate a...

AI Technical Summary

Problems solved by technology

At present, most of the transplanting mechanisms researched by some scientific research institutes and enterprises are planar rod mechanisms. With the increase of transplanting efficiency, the vibration of the transplanting mechanism will intensify, which will affect the transplanting effect, and even cause the phenomenon of missing seedlings and drifting seedlings.

Common non-circular gears are mostly elliptical gears or eccentric gears. The pitch curves of these non-circular gears are limited by the curve equation, which restricts the change of transmission ratio and makes it difficult to meet the requirements of transplanting rice pot seedlings.

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